各種閥門[VALVE]的基本介紹 

閥[VALVE]
閥門是國(guó)民經(jīng)濟(jì)建設(shè)中使用極為廣泛的一種機(jī)械產(chǎn)品。閥門在石油、天然氣、煤炭、冶金、和礦石的開采、提煉加工和管道輸送系統(tǒng)中；閥門在石油化工、化工產(chǎn)品，醫(yī)藥，和食品生產(chǎn)系統(tǒng)中；閥門在水電 、火電和核電的電力生產(chǎn)系統(tǒng)中；閥門在城建的給排水、供熱和供氣系統(tǒng)中；閥門在冶金生產(chǎn)系統(tǒng)中；閥門在船舶、車輛、飛機(jī)、航天以及各種運(yùn)動(dòng)機(jī)械的使用流體系統(tǒng)中；閥門在國(guó)防生產(chǎn)以及新技術(shù)領(lǐng)域里；閥門在農(nóng)業(yè)排灌系統(tǒng)中都有大量的需求。

Valve is a widely used mechanical product in each country'seconomy. You can find valves commonly used in the following fieldslike oil, nature gas, coal, metallurgy, mining, refinery, pipetransportation, petrochemical, chemical, pharmacy, food production,power plant, water supply / drainage, heat supply, air supply,marine, vehicle, airplane, spacecraft, military, new tech,irrigation and many other flowing systems.

閥門分自動(dòng)閥門與驅(qū)動(dòng)閥門。自動(dòng)閥門（如**閥、減壓閥、蒸汽疏水閥、止回閥）是靠裝置或管道本身的介質(zhì)壓力的變化達(dá)到啟閉目的的。驅(qū)動(dòng)閥門（閘閥、截止閥、球閥、蝶閥等）是靠驅(qū)動(dòng)裝置（手動(dòng)、電動(dòng)、液動(dòng)、氣動(dòng)等）驅(qū)動(dòng)控制裝置或管道中介質(zhì)的壓力、流量和方向。由于介質(zhì)的壓力、溫度、流量和物理化學(xué)性質(zhì)的不同，對(duì)裝置和管道系統(tǒng)的控制要求和使用要求也不同，所以閥門的種類規(guī)格非常多。劇不完全統(tǒng)計(jì)，我國(guó)的閥門產(chǎn)品品種已達(dá)四千多個(gè)型號(hào)，近四萬(wàn)個(gè)規(guī)格，閥門在經(jīng)濟(jì)生活中起著非常大的作用。

There are self-driven valves and operated valves. self-drivenvalves( like safety valve, relief valve, steam trap, check valve )are functioning by utilizing its mechanical design or the pressure,direction of its flow medium.operated valve( like gate valve, globevalve, ball valve, butterfly valve ) is fuctioning by actuator(manual, electric, hydraulic, pneumatic etc. ) or the pressure ,flow direction of its medium. due to the differences of pressure,temperature, flow, and physical-chemical character of its medium ,there are different requirements in designing and applying thepipeline system.therefore there are numerous types ofvalve.according to an unofficial statistics, there are more thanfour thousand types of valve with approximately forty thousandspecifications in China. Obviously, valve is an important elementin the social economy.

電磁閥[SOLENOID VALVE]
電磁閥是用來(lái)控制流體的自動(dòng)化基礎(chǔ)元件，屬于執(zhí)行器；并不限于液壓，氣動(dòng)。電磁閥用于控制液壓流動(dòng)方向，工廠的機(jī)械裝置一般都由液壓鋼控制，所以就會(huì)用到電磁閥。而通常意義上，國(guó)內(nèi)電磁閥廠家也并不以液壓電磁閥為主打，一般多生產(chǎn)二位二通氣液用電磁閥。

Solenoid valve is a basic component in automatic flow control,it is actuator but not limited to hydraulic, pneumatic. solenoidvalve is mainly used to control the direction of hydraulic flow,machines in plant are usually controled by hydraulic cylinder andthus the solenoid valve is applyed. generally , solenoid valvemanufacturers in China not only produce hydraulic solenoid valve,they mainly manufacturer hydraulic-pneumatic combined two waysolenoid valve.

電磁閥的工作原理，電磁閥里有密閉的腔，在的不同位置開有通孔，每個(gè)孔都通向不同的油管，腔中間是閥，兩面是兩塊電磁鐵，哪面的磁鐵線圈通電閥體就會(huì)被吸引到哪邊，通過(guò)控制閥體的移動(dòng)來(lái)檔住或漏出不同的排油的孔，而進(jìn)油孔是常開的，液壓油就會(huì)進(jìn)入不同的排油管，然后通過(guò)油的壓力來(lái)推動(dòng)油剛的活塞，活塞又帶動(dòng)活塞桿，活塞竿帶動(dòng)機(jī)械裝置動(dòng)。這樣通過(guò)控制電磁鐵的電流就控制了機(jī)械運(yùn)動(dòng)。

The main working theory of solenoid valve is that there is afully closed cabinet inside the solenoid valve,with holes indifferent position. each hole is connected with different hose.thevalve is centered with two electric magnets aside, when the poweris on, the valve will be pulled to that side.though the movement ofthe valve, the hole which is connected to the hose will be closed /open, the oil inlet is always open, the hydraulic oil flows todifferent hoses and push the cylinder piston by its pressure.thepiston drives the piston stem and then the equipment into movement.by this means, the mechanical movement can be controled bycontroling the electricity of solenoid valve.

球閥[BALL VALVE]
球閥和旋塞閥是同屬一個(gè)類型的閥門，只有它的關(guān)閉件是個(gè)球體，球體繞閥體中心線作旋轉(zhuǎn)來(lái)達(dá)到開啟、關(guān)閉的一種閥門。

Ball valve and plug valve is the same type of valves only itsclosure of a spheroid, spheroid around a rotary axis lines toachieve valve body opened and closed a valve

球閥在管路中主要用來(lái)做切斷、分配和改變介質(zhì)的流動(dòng)方向。球閥是近年來(lái)被廣泛采用的一種新型閥門，它具有以下優(yōu)點(diǎn)：1．球閥流體阻力小，其阻力系數(shù)與同長(zhǎng)度的管段相等。2． 球閥結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕。3．球閥緊密可靠，目前球閥的密封面材料廣泛使用塑料、密封性好，在真空系統(tǒng)中也已廣泛使用。4．球閥操作方便，開閉迅速，從全開到全關(guān)只要旋轉(zhuǎn)90°，便于遠(yuǎn)距離的控制。5．球閥維修方便，球閥結(jié)構(gòu)簡(jiǎn)單，密封圈一般都是活動(dòng)的，拆卸更換都比較方便。6．球閥在全開或全閉時(shí)，球體和閥座的密封面與介質(zhì)隔離，介質(zhì)通過(guò)時(shí)，不會(huì)引起閥門密封面的侵蝕。7．球閥適用范圍廣，通徑從小到幾毫米，大到幾米，從高真空至高壓力都可應(yīng)用。

Ball valve used to be cut off in the main line, distribution andchange the direction of the flow medium. Ball valve is widely usedin recent years a new type of valves, it has the followingadvantages : 1. Ball valve fluid resistance small, and itsresistance coefficient with the length of the barrel of equivalent.2. Ball valve structure simple, small size, light weight. 3. Ballvalve closely reliable, current Ball valve sealed surface materialwidely used plastic, undergo good in a vacuum system also has beenwidely used. 4. Ball valve easy to operate, the closing rapidly,from open all around, as long as there 90E, facilitate remotecontrol. 5. Ball valve maintenance convenience Ball valve structuresimple. seal ring generally activities, the removal of thereplacement is more convenient. 6. Ball valve whole or in the openall closed, spheroid and the sealed surface with medium valve seatseparation medium through, will not cause the valves sealed surfaceerosion. 7. Ball valve application scope Link Drive from small toseveral millimetres, a few meters in from the high pressure can behigh vacuum applications.

蝶閥[BUTTERFLY VALVE]
蝶閥是用隨閥桿轉(zhuǎn)動(dòng)的圓形蝶板作啟閉件,以實(shí)現(xiàn)啟閉動(dòng)作的閥門.蝶閥主要用截?cái)嚅y使用,亦可設(shè)計(jì)成具有調(diào)節(jié)或截?cái)嗉嬲{(diào)節(jié)的功能.目前蝶閥在低壓大中口徑管道上的使用越來(lái)越多

Butterfly valve is on/off by the turning of the stem whichoperate the round butterfly disc. It is mainly used as cut-offvalve and also can be designed as regulating or cut-off /regulating combined valve. currently , butterfly is mainly used inthe low pressure large size pipelines.

蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內(nèi)，圓盤形蝶板繞著軸線旋轉(zhuǎn)，旋轉(zhuǎn)角度為0°~90°之間，旋轉(zhuǎn)到90°時(shí)，閥門則牌全開狀態(tài)。

butterfly valve panels installed at the Tip of the diameterpipeline direction. In butterfly valve body flight corridors, thedisc-shaped Tip boards around rotary axis, rotation angle for 0°-90 meridian east between rotary to +90, the valves are open alllicence conditions.

蝶閥結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕，只由少數(shù)幾個(gè)零件組成。而且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡(jiǎn)單，同時(shí)該閥門具有良好的流體控制特性。蝶閥處于完全開啟位置時(shí)，蝶板厚度是介質(zhì)流經(jīng)閥體時(shí)*的阻力，因此通過(guò)該閥門所產(chǎn)生的壓力降很小，故具有較好的流量控制特性。蝶閥有彈密封和金屬的密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。

butterfly valve structure simple, small size, light weight, onlyby a few parts. But it can be rapidly open and close-90E, simple tooperate, while the fluid control valves have good character.butterfly valve a fully open position, Tip board thickness is onlywhen the medium flows through body resistance, the pressuregenerated by the air valves small, it has a better flow controlcharacteristics. butterfly valve a metal shells sealed and the twosealed sealed patterns. Flexible sealed valves, seal ring can embedin body or peripheral boards to Tip.

截止閥[GLOBE VALVE]
截止閥是一種常用的截?cái)嚅y,主要用來(lái)接通或截?cái)喙苈分械慕橘|(zhì),一般不用于調(diào)節(jié)流量．截止閥適用壓力、溫度范圍很大,但一般用于中、小口徑的管道．

globe valve as one of the cut-off valve is a common valvesmainly used to connect or disconnect the line of medium, generallynot for regulating flows. globe valves apply pressure, hightemperature range, but are generally used for medium andsmall-calibre pipeline

截止閥的主要標(biāo)準(zhǔn) GB12233-89《通用閥門 鐵制截止閥與升降式止回閥》 GB12235-89《通用閥門法蘭連接鋼制截止閥與升降式止回閥》 JB/T53174-94《截止閥 產(chǎn)品質(zhì)量分等》 JB/T53165-92《高壓平衡截止閥產(chǎn)品質(zhì)量分等》 GB/T587-93《船用法蘭青銅截止閥》 GB/T590-93《船用法蘭鑄鐵截止閥》GB8464-87《內(nèi)螺紋連接閘閥、截止閥、球閥、止回閥 通用技術(shù)條件》 GB8465.2-87《內(nèi)螺紋連接閘閥、截止閥、球閥、止回閥基本尺寸 鐵制截止閥》

The valves of the main criteria GB12233-89< a valve closingvalves with metal-style check valve "GB12235-89< a valve flangesteel closing valves connected with the elevation of check valve "JB/T53174-94< closing valves product quality grading"JB/T53165-92< closing valves - balanced product qualitygrading" GB/T587-93< bunker flange closing valves bronze "castiron flange GB/T590-93< bunker closing valves" GB8464-87< ofthread connecting valve, The valves, ball valve, chekc valveoverall technical conditions "GB8465.2-87< of thread connectingvalve, closing valves, ball valve, check valve basic size metalclosing valves"

控制閥[CONTROL VALVE]
控制閥又稱調(diào)節(jié)閥，是執(zhí)行器的主要類型，通過(guò)接受調(diào)節(jié)控制單元輸出的控制信號(hào)，借助動(dòng)力操作去改變流體流量?？刂崎y一般由執(zhí)行機(jī)構(gòu)和閥門組成。如果按其所配執(zhí)行機(jī)構(gòu)使用的動(dòng)力，控制閥可以分為氣動(dòng)、電動(dòng)、液動(dòng)三種，即以壓縮空氣為動(dòng)力源的氣動(dòng)調(diào)節(jié)閥，以電為動(dòng)力源的電動(dòng)控制閥，以液體介質(zhì)(如油等)壓力為動(dòng)力的電液動(dòng)控制閥，另外，按其功能和特性分，還有電磁閥、電子式、智能式、現(xiàn)場(chǎng)總線型控制閥等。

Control valves regulating valves as is the implementation of themain types of vehicles, by accepting conditioning control moduleexport control signals from engine operation to change fluid flow.Control valves and valve general, the executing agency. If by theirticket enforcement agencies use the power, control valves can bedivided into pneumatic, electrical, fluid movement three, namely tocompressed air to power sources pneumatic - valve to call for theengine electric control valves for the liquid medium (such as oil)pressure-driven electricity fluid moving control valves, and theirfunctions and characteristics hours are electromagnetic valves,electronic style, smart, Floor bus-control valves.

控制閥的閥體類型選擇
控制閥的閥體種類很多，常用的有直通單座、直通雙座、角形、隔膜、小流量、三通、偏心旋轉(zhuǎn)、蝶形、套筒式、球形等。在具體選擇時(shí)，可做如下考慮：(1)閥芯形狀結(jié)構(gòu)，主要根據(jù)所選擇的流量特性和不平衡力等因素考慮。(2)耐磨損性，當(dāng)流體介質(zhì)是含有高濃度磨損性顆粒的懸浮液時(shí)，閥的內(nèi)部材料要堅(jiān)硬。(3)耐腐蝕，由于介質(zhì)具有腐蝕性，盡量選擇結(jié)構(gòu)簡(jiǎn)單閥門。(4)介質(zhì)的溫度、壓力，當(dāng)介質(zhì)的溫度、壓力高且變化大時(shí)，應(yīng)選用閥芯和閥座的材料受溫度、壓力變化小的閥門。(5)防止閃蒸和空化，閃蒸和空化只產(chǎn)生在液體介質(zhì)。在實(shí)際生產(chǎn)過(guò)程中，閃蒸和空化會(huì)形成振動(dòng)和噪聲，縮短閥門的使用壽命，因此在選擇控制閥時(shí)應(yīng)防止閥門產(chǎn)生閃蒸和空化。

valve body types of control valves choice valve body many typesof control devices, commonly used by direct-Block, through engine,angle type, divide, and small flows, the three links, eccentricityrotary, butterfly type, sleeve style, spherical. In specificchoices, do the following considerations : (1) disc shape of thestructure, mainly based on the choice of flow characteristics andconsider factors such as power imbalances. (2) The presence of wornwhen fluid medium is the wear and tear of high concentrations ofsuspended particulate fluids, valves materials to the internalhard. (3) corrosion resistance, as a corrosive medium, to choosestructure simple valves. (4) medium temperature, pressure, when themedium temperature, high pressure and great change, and should bechosen disc valve seat materials by temperature, pressure changessmall valves. (5) prevent instant steam and air-based, space-basedinstant steam and only in a liquid medium. In the actual productionprocess, Shanzheng and will form a vibration of air and noise,shorten the useful life of valves, control valves in the choiceshould have instant steam and air-based prevention valves.

換向閥[CHANGE VALVE]
換向閥主要包括電磁換向閥，手動(dòng)換向閥，電液換向閥，四通換向閥，多路換向閥，氣控?fù)Q向閥，五聯(lián)多路換向閥，二位二通換向閥等。

direction change valve include electromagnetic direction changevalve, manual direction change valve, call liquid direction changevalve, four way direction change valve, multiplexed directionchange valve, gas control direction change valve, five ofmultiplexed direction change valve, two spaces, such astwo-direction change valve

手動(dòng)換向閥是用手動(dòng)杠桿操縱閥芯移位的方向控制閥。在液壓系統(tǒng)中，它可控制油流方向，以改變執(zhí)行元件的運(yùn)動(dòng)方向。手動(dòng)換向閥的滑閥換向定位方式有鋼球定位式和彈簧復(fù)位式二種結(jié)構(gòu)。鋼球定位式是當(dāng)操縱手柄外力取消后，閥芯依靠鋼球定位保持在換向位置。彈簧復(fù)位式是當(dāng)操縱手柄外力取消后，彈簧使閥芯自動(dòng)回復(fù)到初始位置。電磁換向閥是通過(guò)電氣信號(hào)來(lái)改變液流方向的控制閥門，它可用來(lái)實(shí)現(xiàn)液壓系統(tǒng)的卸載，順序動(dòng)作及油路換向。電磁換向閥主要用于工程機(jī)械、礦山機(jī)械、起重運(yùn)輸機(jī)械以及其它機(jī)械的液壓系統(tǒng)中。

Manual is a manual lever manipulation direction change valvedisc killer direction control valves. In the hydraulic system, itcan control the oil flow direction, the implementation ofcomponents of the Movement to change direction. Manual directionchange valve the slide-valve for a way to the positioning of spacessteel ball positioning-and-two types of spring-loaded structure.steel ball positioning of manipulation handle external forces whenlifting, positioning steel ball disc rely on to maintain in-place.When the manipulation of spaces is a spring-loaded handle externalforces cancellation, disc spring-loaded to automatically revert tothe initial position. direction change valve electromagneticsignals through electrical control valves to change the directionof liquid flow, it can be used to achieve hydraulic unloadingsystem, the order to move and change oil flow. Electromagneticdirection change valve mainly for engineering machinery, miningmachinery, transport machinery and other mechanical liftinghydraulic system

單向閥[SINGLE CHECK VALVE]
單向閥又稱止回閥或逆止閥。用于液壓系統(tǒng)中防止油流反向流動(dòng)。

Check valves or as a one-way valve. For the hydraulic system toprevent reverse flow of oil flow.

單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥，它與單向閥相同，用以防止油液反向流動(dòng)。但在液壓回路中需要油流反向流動(dòng)時(shí)又可利用控制油壓，打開單向閥，使油流在兩個(gè)方向都可流動(dòng)。液控單向閥采用錐形閥芯，因此密封性能好。在要求封閉油路時(shí)，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種。在油流反向出口無(wú)背壓的油路中可用內(nèi)泄式；否則需用外泄式，以降低控制油壓力。

A straight-through one-way valves and rectangular Type two.Straight-through one-way valves installed in a connecting thread ofthe pipeline. Rectangular style is a one-way valve connectingthread, flange type connectivity and connecting three forms. Fluidcontrol valves also known as one-way pressure valve closed valvesor insurance, with the same one-way valves to prevent reverse flowof oil. However, the need for oil flow in hydraulic circuit reverseflows can use hydraulic control, opening a one-way valve, so thatthe flow of oil can flow in both directions. Fluid control one-wayvalve used cone disc, sealed a good performance. oil flow closed indemand, the availability of one-way valves as oil flow park skyPaul pressure. Fluid leakage control one-way valves control themanner of oil and oil-leaking Type II species. No reverse flow ofoil exports in the oil flow available within inflow Type; Otherwiserequired outflow type, the control of oil in order to reducepressure.

電動(dòng)閥[ELECTRIC MOTOR CONTROL VALVE]
電動(dòng)閥是以電動(dòng)機(jī)作為啟閉閥門的動(dòng)力，用于比較大型的閥門，**的電動(dòng)閥，可以用于工藝上的流量控制。

Electric valves open and close valves on the electric motors asa driving force for the larger valves, electric valves, theprocesses can be used to control the flow.

電動(dòng)閥具備裝配容易、故障率低以及符合業(yè)界自動(dòng)化需求的優(yōu)點(diǎn)，是業(yè)者較劃算的選擇。因?yàn)槭褂靡话銈鹘y(tǒng)氣動(dòng)閥，免不了要有配管、電磁閥及壓縮機(jī)等才能匹配，而電動(dòng)閥是以馬達(dá)驅(qū)動(dòng)，安裝簡(jiǎn)易省事，且電動(dòng)閥安裝配合工廠原有的自控線路即可，可節(jié)省其他成本支出。此外，以馬達(dá)驅(qū)動(dòng)方式開閉較平順，無(wú)瞬間沖力過(guò)大的缺點(diǎn)，故障率可大幅降低,不少人都認(rèn)為電動(dòng)閥貴，使用成本高，其實(shí)不然，如果以整體計(jì)算，傳統(tǒng)閥要加上許多配件及管路安裝，價(jià)格并未占優(yōu)勢(shì)，反而要承擔(dān)較多的保養(yǎng)費(fèi).所以電動(dòng)閥的前景是比較廣闊的。

Electric valves fitted with easy, low failure rate in theindustry and the advantages of automation needs is more economicalchoice operators. Because of the use of general traditionalpneumatic valves, inevitably a ticket pipes, and electromagneticvalves, compressors can match, and electrical devices aremotor-driven, easy to install, and the installation of electricaldevices with the original robotic factory line will be able toreduce other costs. In addition to motor-driven approach to turnmore smoothly, without an excessive momentum shortcomings, failurescan be substantially reduced rate, many people believe that yourelectric valves, the use of high cost, but in fact it is not, if aholistic basis, and many accessories to traditional valves and theinstallation of pipelines, the price is not dominant, Instead, theywill assume more maintenance. Therefore, the prospects forelectrical devices are relatively broad.

疏水閥[STEAM TRAP VALVE]
疏水閥在蒸汽加熱系統(tǒng)中起到阻汽排水作用，選擇合適的疏水閥，可使蒸汽加熱設(shè)備達(dá)到高工作效率。要想達(dá)到理想的效果，就要對(duì)各種類型疏水閥的工作性能、特點(diǎn)進(jìn)行**的了解。疏水閥的品種很多，各有不同的性能。選用疏水閥時(shí)，首先應(yīng)選其特性能滿足蒸汽加熱設(shè)備的佳運(yùn)行，然后才考慮其他客觀條件，這樣選擇你所需要的疏水閥才是正確和有效的。

steam traps steam heating system in a waste gas drainage role inthe selection of suitable steam traps allow steam heating equipmentfor the highest efficiency. To achieve optimal results, it isnecessary for all types steam traps work performance andcharacteristics of a comprehensive understanding. steam traps manyvarieties, each with different performance. steam traps choice,should first elect their identity can best meet the steam heatingequipment operation before considering other objective conditions,such choices you need steam traps is correct and effective.

疏水閥要能“識(shí)別”蒸汽和凝結(jié)水，才能起到阻汽排水作用?！白R(shí)別”蒸汽和凝結(jié)水基于三個(gè)原理：密度差、溫度差和相變。于是就根據(jù)三個(gè)原理制造出三種類型的疏水閥：分類為機(jī)械型、熱靜力型、熱動(dòng)力型。1.在生產(chǎn)工藝的換熱設(shè)備，烘干室，快速熱交換器，蒸餾設(shè)備等需要快速升溫，不允許存有凝結(jié)水的生產(chǎn)加熱設(shè)備，應(yīng)該選用機(jī)械型疏水閥。2.在蒸汽管道，伴熱管線、小型加熱設(shè)備，采暖設(shè)備，溫度要求不高的用汽設(shè)備，應(yīng)該選用熱靜力型疏水閥。3.在高溫高壓過(guò)熱蒸汽管線和設(shè)備上，應(yīng)該選用過(guò)熱蒸汽專用疏水閥。

steam traps to be "identified" steam and condensed water canplay a role in blocking air drainage. "identification" and thecondensed steam water based on three principles : the poor density,and temperature difference of change. So on the basis of threeprinciples of creating three types of steam traps : classified asmechanical type, thermal static type, thermal power-based. 1. Inthe heat production equipment, drying room, rapid heat exchangers,distillation equipment needs rapid warming, not a condensed waterheating equipment production should be chosen mechanical type steamtraps. 2. In steam pipes, coupled heat pipelines, small heatingequipment, heating equipment, air temperatures do not ask for theuse of equipment, it should be the choice of hot static type steamtraps. 3. Overheating in high-temperature high-pressure steampipelines and equipment, should choose an exclusive steam trapssteam.

比例閥[PROPORTIONAL VALVE]
比例閥是一種輸出量與輸入信號(hào)成比例的液壓閥。它可以按給定的輸入電信號(hào)連續(xù)地按比例地控制液流的壓力、流量和方向。比例閥可以按設(shè)定的比例同時(shí)抽取幾種溶液進(jìn)行混合的閥門。液相色譜中的低壓梯度洗脫裝置就是在高壓泵之前加上一個(gè)比例閥，在常壓下將幾種溶劑按設(shè)定的比例在線混合之后，再泵入色譜體系。

Proportional valves is a signal proportional to import andexport volume of the hydraulic valves. It can be given for theimportation of electrical signal proportional to the control Yeliupressure, flow and direction. Proportional valve can be set at thesame time the proportion of the valves from several solution mixed.The liquid phase is coupled device is the low voltage gradientitself in a high-pressure pumps add ratio valves in the atmospherewill be set according to the proportion of online several solventsmixed, then pump into the gas system.

比例閥能實(shí)現(xiàn)自動(dòng)控制、遠(yuǎn)程控制和程序控制。比例閥能把電的快速靈活等優(yōu)點(diǎn)與液壓傳動(dòng)功率大等特點(diǎn)結(jié)合起來(lái)。比例閥能連續(xù)地、按比例地控制執(zhí)行元件的力、速度和方向，并能防止壓力或速度變化及換向時(shí)的沖擊現(xiàn)象簡(jiǎn)化了系統(tǒng)，減少了元件的使用量。比例閥制造簡(jiǎn)便，價(jià)格比伺服閥低廉，但比普通液壓閥高。由于在輸入信號(hào)與比例閥之間需設(shè)置直流比例放大器，相應(yīng)增加了投資費(fèi)用。比例閥使用條件、保養(yǎng)和維護(hù)與普通液壓閥相同，抗污染性能好。比例閥具有優(yōu)良的靜態(tài)性能和適當(dāng)?shù)膭?dòng)態(tài)性能，動(dòng)態(tài)性能雖比伺服閥低，但已經(jīng)可以滿足一般工業(yè)控制的要求。比例閥效率比伺服閥高。主要用于開環(huán)系統(tǒng)，也可組成閉環(huán)系統(tǒng).

Proportional valves to achieve automatic control, remote controland programmed control. Proportional valves can call the rapid andflexible, and other advantages such as large hydraulic powertransmission characteristics together. Proportional valves tocontinuous, proportional to the implementation of components of thecontrol, speed and direction, pressure and can prevent or to theexchange rate changes and the impact of the phenomenon ofsimplified systems to reduce the usage of components. Proportionalvalves manufacture simple, low prices than servo valves, hydraulicvalves than ordinary high. Because of signal proportional valveswith the ratio between the need to install DC amplifier, acorresponding increase in investment costs. Proportional valvesconditions of use, maintenance and preservation of hydraulic valveswith the same ordinary, extraordinary good performance.Proportional valves excellent static performance and appropriatedynamic performance, dynamic performance is low compared with servovalves, but had to meet general industrial control requirements.Proportional valves than servo valves high efficiency. For the mainpart of the system can be integral loop system.

隔膜閥[DIAPHRAGM VALVE]
隔膜閥是一種特殊形式的截?cái)嚅y，其啟閉件是一塊用軟質(zhì)材料制成的隔膜，它將閥體內(nèi)腔與閥蓋內(nèi)腔隔開。隔膜閥實(shí)際上不過(guò)是“鉗夾”的閥，一個(gè)彈性的，可擾的膜片，用螺椿連接在壓縮件上，壓縮件是由閥桿所操作而上下移動(dòng)，當(dāng)壓縮件上升，膜片就高舉，而造成通路，當(dāng)壓縮件下降，膜片就壓在閥體堰上（假使為堰式閥）或壓在輪廓的底部（假使為直通式），隔膜閥適用于開關(guān)及節(jié)流之用。

diaphragm valve is a special form of cut-off valves, which openand close this is a piece of soft quality materials produced by thedivide, it separate the inside body and inlet inside the cover.diaphragm valve is really only "jaw" valves, a flexible, three ofdiaphragm by Lo underground link in compressed pieces, thecompression of which is operated by stem next movement whencompressed pieces rise diaphragm on hold, resulting in access, whencompressed pieces falling, diaphragm pressure on the weir in valvebody (even for the weir-type valves) or pressure at the bottomcontours (even for straight-through processing), diaphragm valveapplicable to switches and reducing use.

隔膜閥本身結(jié)構(gòu)設(shè)計(jì)的原因特適合于超純介質(zhì)或污染嚴(yán)重，十分粘稠的液體、氣體、腐蝕性或惰性介質(zhì)。與控制設(shè)備相結(jié)合時(shí)，隔膜閥更能取代其它傳統(tǒng)控制系統(tǒng)，尤其是適用于固體和易污染的惰性介質(zhì)。產(chǎn)品主要應(yīng)用于生物制藥、食品、行業(yè);以及電力、化工、電鍍、等行業(yè)的工業(yè)水處理中,還被應(yīng)用于半導(dǎo)體晶圓的生產(chǎn)中,隔膜閥是特別適用于運(yùn)送有腐蝕性，有粘性的流體，例如泥漿、食品、藥品、織維性粘合液等，因管線中，隔膜閥的操作機(jī)構(gòu)，是不暴露在運(yùn)送流體中，故不具污染性，也不需要填料，閥桿填料部也不可能會(huì)泄漏。

diaphragm valve own special reasons for the structural designsuitable for super pure medium or severe pollution very ropyliquids, gases, corrosive or inert medium. Combined with controlequipment, diaphragm valve replace other more traditional controlsystems, especially vulnerable pollution applicable to solid inertmedium. Biological products are mainly used in the pharmaceutical,food, industry; And the power, chemical, electroplating, andindustrial water treatment industries, was also applied to thesemiconductor wafer production, diaphragm valve particularlyapplicable to the delivery of a corrosive, became the fluid, suchas mud, food, medicines, woven together liquid-dimensional, becausepipelines, diaphragm valve operating agencies, it is not exposed tothe delivery of fluid, So no polluting, and do not need to fill,the Department can not fill stem will leak.

氣閥[GAS VALVE]
從氣閥工作原理來(lái)看，氣閥工作性能將直接影響壓縮機(jī)氣缸的工作，因此，對(duì)氣閥有如下要求：阻力損失小。氣閥阻力損失大小與氣流的閥隙速度及彈簧力大小有關(guān)。氣速越高，能量損失越大；彈簧力過(guò)大，阻力損失也大，其大小按氣閥運(yùn)動(dòng)規(guī)律的合理性準(zhǔn)則設(shè)計(jì)確定。氣閥關(guān)閉及時(shí)、迅速，關(guān)閉時(shí)不漏氣，以提高機(jī)器的效率，延長(zhǎng)使用期。壽命長(zhǎng)、工作可靠。限制氣閥壽命的主要因素是閥片及彈簧質(zhì)量，一般對(duì)長(zhǎng)期連續(xù)運(yùn)轉(zhuǎn)的壓縮機(jī)，希望壽命達(dá)8000小時(shí)以上；對(duì)移動(dòng)式、短期或間歇運(yùn)轉(zhuǎn)的壓縮機(jī)，要求可稍低些。

From the air valve operating principles of view, air valveperformance will directly affect the work of compressor tanks, airvalve for the following requirements : resistance losses small. Airvalve size and airflow resistance losses of valves always speed andthe size of the spring-loaded edge. Gas higher speed, the greaterthe energy losses; Spring-loaded edge too large, the loss is greatresistance, the size of the air valve movement design guidelines todetermine the reasonableness of the law. Air valve closed timely,rapid, not leak closed to improve the efficiency of machines andextended use period. Long life, work reliable. Life is the mainfactor restricting air valve and spring-loaded valves quality, thegeneral long-term continuous operation of the compressors to life80 hours; For mobile, short-term or intermittent operation ofcompressors, may require slightly more.

氣閥是往復(fù)活塞式壓縮機(jī)中的重要部件，也是易損壞的部件之一。它的好壞直接影響壓縮機(jī)的排氣量、功率消耗及運(yùn)轉(zhuǎn)的可靠性，目前壓縮機(jī)正向高速方向發(fā)展，而限制轉(zhuǎn)速提高的關(guān)鍵問題之一就是氣閥?；钊綁嚎s機(jī)一般都采用“自動(dòng)閥”，就是氣閥的開啟與關(guān)閉是依靠閥片兩邊的壓力差實(shí)現(xiàn)的，沒有其它的驅(qū)動(dòng)機(jī)構(gòu)。

Air valve and piston-type compressors are to the importantcomponents is one of the components easily damaged. It will have adirect impact on the displacement compressors, power consumptionand reliability of operation, the current compressor is fastdirection, and rotational speed limit is one of the key issues inimproving air valve. Piston-type compressors typically use the"automatic valve" that the air valve is opened and closed valves onthe pressure on both sides to achieve poor, and there is no otherdrive.

膨脹閥[EXPANSION VALVE]
膨脹閥在系統(tǒng)中所起的作用是１：節(jié)流霧化液態(tài)制冷劑２：根據(jù)原設(shè)計(jì)系統(tǒng)過(guò)冷度和制冷工況控制流入蒸發(fā)器的制冷劑的流量．３：停機(jī)時(shí)快速平衡系統(tǒng)高低壓力．所有的膨脹閥在設(shè)計(jì)與某車相配套時(shí)基本都要考慮到在膨脹閥失控條件下對(duì)壓縮機(jī)的傷害程度評(píng)價(jià)

The role of expansion valves in the system is 1: cut usuallyliquid coolant 2 : Under the original design extremely cold andrefrigeration systems for the situation accurately control the flowevaporator Coolant flow. 3 : parking, rapid balance system orpressure. All valves in the design and expansion of facilities, amachine must take into account the expansion of the basicconditions for the compressor valves control the degree of injuryassessment

因?yàn)榕蛎涢y是屬于超高精密加工的零件，在工廠對(duì)其內(nèi)部調(diào)整機(jī)構(gòu)零件的加工都在恒溫狀態(tài)下完成，其中的感溫包的氣體充填更是要求嚴(yán)格一致不允許一絲泄漏，在完成裝配的膨脹閥還要經(jīng)過(guò)嚴(yán)格的測(cè)試和耐疲勞老化抽檢，膨脹閥的構(gòu)造：1：感知溫度的感溫包；2：感溫氣體或者液體充填膨脹波紋腔；3：球型閥座；4球型閥；5：彈簧；6：過(guò)熱度調(diào)整螺絲墊片和螺絲；7：內(nèi)部和外部（H型）密封件；8：推力桿和波紋腔墊片；9：閥體；10：毛細(xì)管等等。感溫包：是必須妥善接觸固定在蒸發(fā)器的出口管道上，感知蒸發(fā)器實(shí)時(shí)回氣溫度的部件，它將充填物質(zhì)的熱脹冷縮壓力通過(guò)相通的毛細(xì)管提供給膨脹波紋箱；膨脹波紋箱依據(jù)壓力的變化推動(dòng)推力桿結(jié)合過(guò)熱度調(diào)整螺絲和彈簧的阻力來(lái)調(diào)整球型閥的開度，實(shí)現(xiàn)制冷量的調(diào)整。當(dāng)回氣管道溫度升高，感溫包內(nèi)的物質(zhì)膨脹，壓力升高，膨脹波紋箱內(nèi)壓力也升高，波紋腔膨脹推動(dòng)推力桿克服彈簧阻力，球型閥開度變大；當(dāng)回氣管道溫度減低，感溫包內(nèi)的物質(zhì)膨脹，壓力降低，膨脹波紋箱內(nèi)壓力也降低，彈簧阻力推動(dòng)推力桿壓縮波紋腔，球型閥開度變??；如此不斷的進(jìn)行推拉調(diào)整平衡，只要制冷循環(huán)繼續(xù)下去。

Because expansion valves are high precision processingcomponents,factory in its internal adjustment of the body parts areprocessed in a state of complete thermostatic, the temperature ofthe gas filling kits are demanding more consistent not detectleaks, in the completion of the expansion valve assembly alsoundergo strict testing and fatigue resistance aging sampling, theconstruction expansion valves : 1 : Indeed temperature temperaturekits ;2 : temperature gas or liquid filled with the expansioncorrugated ;3 : spherical valve seat ;4 spherical valves ;5 :spring ;6 : overheating degrees adjustment screw spacer and screw;7 : internal and external (H-type) sealed pieces ;8 : thrust polesand corrugated of spacer ;9 : Fati ;10 : capillary, and so on.Temperature kits : contact must be properly fixed in the evaporatorexport pipelines, real-time communication evaporator components totemperature degrees, the material will be filled throughinterlinked capillary pressure due to the expansion of corrugatedboxes; swelling corrugated boxes on the pressure for change in thethrust pole with an adjustment screw and spring-loaded ball-typevalves to adjust the resistance of the degrees of refrigerationvolume precision adjustments. When the temperature to gaspipelines, temperature packets of material expansion, the pressurerise, inflation pressures are rising corrugated box, corrugatedpromote the expansion thrust to overcome the spring-loaded poleresistance, the ball-type valve opened for big change; When the gaspipeline to reduce the temperature, temperature of the materialswelling up, the pressure lowered inflation corrugated box pressurealso reduced, spring-loaded pole compressed corrugated ofresistance to thrust, spherical valves open for smaller; Thisconstant push and pull adjustment for the balance, as long asrefrigeration cycle continue.

平衡閥[BALANCE VALVE]
從調(diào)節(jié)基本原理上看，平衡閥實(shí)際上就是一種有開度指示的手動(dòng)調(diào)節(jié)閥。在平衡閥的上游、下游端各裝一個(gè)測(cè)壓孔，用來(lái)測(cè)量流體通過(guò)閥門的壓降。使用時(shí)，測(cè)得閥門壓降和讀出開度，即可算得通過(guò)閥門的流量。其作用相當(dāng)于調(diào)節(jié)閥和等效孔板流量?jī)x的組合，使各個(gè)支路的流量分配達(dá)到要求。當(dāng)總循環(huán)泵變速運(yùn)行時(shí)，各個(gè)支路的流量分配比例保持不變。

From the basic principles of regulation viewpoint balancingvalve is actually an instruction manual for the regulation valves.In balancing valve upstream and downstream ends of the tube with ahole, used to measure the fluid through valves pressure reduction.Use, detected valves pressure reduction and read out the degrees,can be considered by the flow valves. Its role to regulating valvesand flow-combination hole equivalent to the slip road to the flowdistribution requirements. When the total cycle pump gear shiftoperation, the flow of the slip road ratio unchanged.

動(dòng)態(tài)平衡閥的工作原理：通過(guò)改變平衡閥的閥芯的過(guò)流面積來(lái)適應(yīng)閥門前后的變化，從而達(dá)到控制流量的目的。動(dòng)態(tài)平衡閥是一個(gè)局部阻力可以變化的節(jié)流元件.當(dāng)平衡閥前后壓差小于小啟動(dòng)壓差是彈簧未被壓縮，流通面積大。當(dāng)平衡閥前后壓差超越工作范圍是，閥膽完全壓縮彈簧，水流只從閥膽兩邊的圓孔流過(guò)，此時(shí)閥膽變成了固定的調(diào)節(jié)器，流量與壓差成正比，隨壓差的增大而增大.平衡閥具有在一定的壓力范圍內(nèi)限制空調(diào)末端設(shè)備的大流量、自動(dòng)恒定流量的特點(diǎn)，在大工型、復(fù)雜、空調(diào)采暖負(fù)荷不恒定的工程中，簡(jiǎn)化了系統(tǒng)調(diào)試過(guò)成，并縮短了調(diào)試時(shí)間。

balancing valve dynamics operating principles : through changesin the flow Disc balancing valve the area around the valves toadjust to the change, thus achieving the purpose of flow control.Is a dynamic balancing valve local resistance to change spendingcomponents. When balancing valve and differential pressures aresmaller than the smallest start differential pressures were notcompressed spring-loaded, the largest circulation area. Whenbalancing valve and differential pressures beyond the scope of workis completely compressed spring-loaded valves guts, guts flow onlyfrom valves on both sides of the square shed, when valves guts intoa fixed regulator, the flow and differential pressures inproportion with the increase and differential pressures increase.balancing valve have some great pressure within theair-conditioning equipment to limit the maximum flow, automaticconstant flow characteristics, in the large-type, complex, airconditioning load is not constant heating works, a simplificationof the system into debugging, and shorten the debugging time.

溢流閥[OVERFLOW VALVE]
溢流閥按結(jié)構(gòu)形式分為直動(dòng)型和先導(dǎo)型，它旁接在液壓泵的出口保證系統(tǒng)壓力恒定或限制其高壓力，有時(shí)也旁接在執(zhí)行元件的進(jìn)口，對(duì)執(zhí)行元件其**保護(hù)作用。直動(dòng)型溢流閥，主要有閥芯、閥體、彈簧、上蓋、調(diào)節(jié)桿、調(diào)節(jié)螺母等零件組成。

Relief valves in the form of the structure and type of movinginto straight-pilot, and it's up in Hydraulic Pump export guaranteesystem, or limitation of the maximum pressure constant pressure,sometimes adjacent to import components in the implementation ofthe components of its security role. Straight moving type reliefvalves, mainly valve disc, valve body,, spring-loaded, roof,regulation pole, conditioning nut, and other integral parts.

先導(dǎo)型溢流閥有先導(dǎo)閥和主閥兩部分組成,先導(dǎo)閥為一錐閥，實(shí)際上是一個(gè)小流量的直動(dòng)型溢流閥.隨著溢流閥的進(jìn)口壓力增大，作用在先導(dǎo)閥芯上的液壓力Fx隨之增大，當(dāng)Fx大于等于Pt2時(shí)，先導(dǎo)閥閥口開啟，溢流閥的進(jìn)口壓力油經(jīng)阻尼孔、先導(dǎo)閥閥口溢流到溢流閥的出口，然后回油箱。溢流閥進(jìn)口壓力油經(jīng)主閥閥口溢流回油箱。主閥閥口開度一定時(shí)，先導(dǎo)閥閥芯和主閥閥芯分別處于受力平衡，閥口滿足壓力流量方程，主閥進(jìn)口壓力為一確定值。

Pilot valves and pilot-type relief valves are the main valves oftwo parts, pilot valves for cone valve, the flow is a small directaction type relief valves. With import pressure relief valves,pilot vavel disc role in the fluid pressure Fx attendant increase,when more than equal to Fx Pt2, pilot valves valves mouth opened,the pressure relief valves to import oil by damping hole, Pilotvalves valves mouth overflow relief valves to export, and then backto the fuel tank. Imported oil pressure relief valves to the mainvalve valves mouth overflow back containers. Main valves valvesmouth open for some time, pilot valves and the valve Faxin Faxinrespectively in the balance of power, pressure flow valves meet theequation mouth, and the main valve to the pressure of a determinedvalue of imports.

調(diào)壓閥[PRESSURE GOVERNOR VALVE]
調(diào)壓閥是由調(diào)壓閥、油水分離器及單向閥等構(gòu)成的一個(gè)組合閥總成。

Pressure governor valve is composed by governing valve, oil,water separation devices and a combination of one-way valves, etc.

調(diào)壓閥的原理是利用了彈簧力與壓力相平衡的原理，當(dāng)彈簧的壓力小于氣壓的時(shí)候閥關(guān)閉，當(dāng)壓力大于彈簧的彈力時(shí)候橡膠調(diào)壓膜片下方的壓縮空氣對(duì)膜片的作用力，推動(dòng)膜片向上拱曲離開閥座而使空氣流入氣腔，此時(shí)卸荷活塞在氣壓作用下移動(dòng)，將排放閥門推離閥座，于是由空氣壓縮機(jī)充入氣腔的空氣便通過(guò)排放閥和排氣口排入大氣空氣壓縮機(jī)空轉(zhuǎn)。調(diào)壓閥的作用是限定系統(tǒng)的高壓力0.75-0.80兆帕(7.5-8.0巴)。在可靠工作的前提下確保系統(tǒng)**。調(diào)壓閥種類眾多用途廣泛,主要用于交通,及工業(yè)民用領(lǐng)域.

Pressure governor valve is the use of a spring-loaded power andpressure balance theory, when the spring-loaded pressure less thanatmospheric pressure and the valves closed when the pressure isgreater than the spring-loaded rubber tubing stretch when thebottom of compressed air diaphragm, diaphragm the effort to promotediaphragm upward and left vavle seat blow the air flow of gas, thiswould piston shirking role in the pressure mobile, Selection willbe emissions from valve seat, air compressors made by the then airinto the gas valves and exhaust emissions is through the mouth intoatmospheric air compressors idling. pressure governor valve's roleis limited to the maximum system pressure 0.75-0.80 trillion Pago(7.5-8.0 bar). In the context of ensuring reliable security

伺服閥[SERVO VALVE]
伺服閥主要分為力反饋式電液伺服閥和位置反饋式伺服閥.

Servo valves consists of feedback - electric-hydraulic servovalve and position feedback servo valves.

電液伺服閥的任務(wù),是把電氣轉(zhuǎn)換為液壓量去控制油動(dòng)機(jī).伺服閥是由一個(gè)力矩馬達(dá),兩級(jí)液壓放大和機(jī)械反饋系統(tǒng).力矩馬達(dá)是由一個(gè)兩側(cè)繞有線圈的*磁鐵組成,當(dāng)伺服閥兩側(cè)的線圈產(chǎn)生不平衡電流時(shí),由于電磁力的作用,使銜鐵及擋板發(fā)生偏轉(zhuǎn),伺服閥把電量轉(zhuǎn)成換成位移量,放大是由不1個(gè)雙噴嘴和平共1個(gè)擋板組成,此擋板固定在銜鐵的中點(diǎn),并在2個(gè)噴嘴之間穿過(guò),使伺服閥在噴嘴的端部與擋板之間形成2個(gè)可變的節(jié)流孔,由擋板和噴嘴控制的油壓通往*二級(jí)滑閥兩兩端面上.伺服閥*二級(jí)滑閥是四通滑閥結(jié)構(gòu)上,并嵌入滑閥中心的1個(gè)槽內(nèi),當(dāng)銜鐵處于中間位置時(shí),擋板對(duì)流過(guò)兩個(gè)噴嘴的油流的節(jié)作用相同,滑閥的兩端無(wú)差壓

electric-hydraulic servo valve's task is to the volume ofelectrical switch to control oil for hydraulic motivated. Servovalves is a torque motor, both hydraulic and mechanical enlargedfeedback system. torque motors on both sides by a permanent magnetaround a coil formed when servo valves on both sides of the coilproduce an electric currency, as a result of electromagnetic power,and the back plate of the armature deflection, servo valves to beconverted into electricity displacement volume, the first enlargedby one double nozzles peace were one back plate composition of theback plate is fixed at the mid-point of armature, and in betweenthe two nozzles through to servo valves at the end of nozzles and aback plate between two variable costs Kong. by the back plate andnozzles controlled hydraulic slide-valve leading to the secondlevel at two levels. servo valve secondary slide-valve is spunslide-valve structure, and embedded slide-valve inside the centerone, when armature in the middle position, the back plateconvection flow of

節(jié)流閥[THROTTLE VALVE]
節(jié)流閥又稱膨脹閥、調(diào)節(jié)閥，他是制冷系統(tǒng)不可缺少的四大重要設(shè)備之一。節(jié)流閥的作用是對(duì)冷凝器輸出的高壓液態(tài)制冷劑進(jìn)行節(jié)流降壓和調(diào)節(jié)流量。制冷劑液體經(jīng)過(guò)節(jié)流閥節(jié)流降壓后成為低溫低壓的汽液混合流體，經(jīng)過(guò)氨液分離器分離掉無(wú)效的蒸汽后供往蒸發(fā)器中蒸發(fā)吸熱。節(jié)流閥的型式很多，結(jié)構(gòu)也各異，但是他們的基本原理均是使高壓的液態(tài)制冷劑被迫通過(guò)一個(gè)適應(yīng)系統(tǒng)流量的“小孔”，使其通過(guò)小孔時(shí)需要克服很大的流動(dòng)阻力，因而使壓力發(fā)生聚變，與此同時(shí)，一部分液體化為蒸汽，并從其本身吸取汽化潛熱，因而使膨脹后的汽液混合流體變成低溫低壓狀態(tài)。節(jié)流閥的閥芯為針形錐體或帶缺口的錐體，閥桿的螺紋為細(xì)牙，當(dāng)旋轉(zhuǎn)手輪時(shí)，閥芯移動(dòng)的距離不大，液體通過(guò)的面積也就很小，此時(shí)可以造成很大的局部阻力，高壓液體通過(guò)小孔時(shí)消耗能量而降壓。節(jié)流閥開啟度的大小是根據(jù)蒸發(fā)器熱負(fù)荷的變化而調(diào)定通常其開啟度為手輪的八分之一至四分之一周，不能超過(guò)一周，否則開啟度過(guò)大，即失去節(jié)流作用。

throttle valve as expansion valves, regulating valves, it isrefrigeration system indispensable four one important equipment.throttle valve role is the export of high-pressure liquid coolantcondensers to reduce and regulate the flow of relief. Coolantliquid after throttle valve expenditure of relief after alow-temperature low-voltage gas liquid mixed fluid, afterseparation into ammonia liquid separation devices for invalid aftersteam vaporizer, to evaporation endotherm. throttle valve manypatterns, structures also vary, but their basic principles are thatthe high-pressure liquid coolant forced to adapt to the systemthrough a flow "puncture wounds on the" make it through thepuncture wounds on the need to overcome the considerable resistancemovement, resulting in fusion pressure, and at the same time, someliquid into steam, and from its own lessons vaporization latentheat, thereby expanding the gas into liquid cryogenic fluid mixedlow voltage state. throttle valve the Faxin for needle-shaped coneor belt gaps Cone, the thread for Fagan small teeth, whenround-hand, the distance is Faxin mobile, liquid through the areais small, this can cause considerable local resistance, highpressure liquid through the puncture wounds on the consumption ofenergy and relief. throttle valve opened degrees is based on thesize of the evaporator heat load changes that will be open for itsusual hand for the eighth round to fourth week and not more thanone week, otherwise spend big opening, lost spending.

液壓閥[HYDRAULIC VALVE]
液壓閥的品種繁多，除了不同品種、規(guī)格的通用閥外，還有許多專用閥和復(fù)合閥。就液壓閥的基本類型來(lái)說(shuō)，可按以下幾種方式進(jìn)行分類：按功能分類,1．壓力控制閥用來(lái)控制液壓系統(tǒng)中液流壓力的液壓閥。2．流量控制閥用來(lái)控制液壓系統(tǒng)中液流流量的液壓閥。3．方向控制閥用來(lái)控制液壓系統(tǒng)中液流的流動(dòng)方向的液壓閥。除了上述具有單一功能的通用液壓閥以外，還有一些專用液壓閥和復(fù)合液壓閥具有兩種以上的功能，例如既能控制方向又能控制壓力，或既能控制方向又能控制流量，等等。

Hydraulic valves of a wide variety, in addition to differentvarieties, specifications generic valves, there are manyspecialized valves and complex devices. Hydraulic valves on thebasic types, classified according to the following manner : byfunctional classification 1. Hydraulic pressure control valves usedto control the hydraulic pressure system flow valves. 2. Flowcontrol valve hydraulic system used to control the flow ofhydraulic valves Ye Liu. 3. Hydraulic control valves used tocontrol the direction of the system flow mobile hydraulic valvesdirection. In addition to the overall function of a singlehydraulic valves, hydraulic valves and a number of specializedhydraulic valves with more complex functions, such as pressurecontrol can only control the direction or control which can controlthe direction of flow, and so on.

按控制方式分類1．定值或開關(guān)控制閥這類液壓閥借助于通斷型電磁鐵或手調(diào)機(jī)構(gòu)等方式，將閥芯位置或閥芯上的彈簧設(shè)定在某一工作狀態(tài)，從而使液流的壓力、流量或流向保持某一定值。這種液壓閥屬于常見的普通液壓閥。2．比例控制閥這類閥的輸出量（流量、壓力）可以按照輸入信號(hào)的變化規(guī)律連續(xù)成比例地進(jìn)行調(diào)節(jié)。它們常采用比例電磁鐵將輸入的電信號(hào)轉(zhuǎn)換成力或閥的機(jī)械位移量，進(jìn)行控制。也可以采用其它形式的電氣輸入控制器件。由于比例閥結(jié)構(gòu)簡(jiǎn)單、工作可靠、價(jià)格較低，性能較普通的定值控制閥有明顯提高，并且可以通過(guò)電信號(hào)進(jìn)行連續(xù)控制，因此在許多場(chǎng)合獲得了廣泛應(yīng)用。

Controlled manner by classification 1. Constant control valvesor switches such hydraulic valves through hands-off type ofelectro-magnet or transfer institutions, will valve disc locationof the spring-loaded or valve disc set in a working condition sothat flow pressure, or flow to maintain a certain flow value. Thishydraulic valves are the most common ordinary hydraulic valves. 2.Proportional control valves such devices export volume (flow,pressure) can be imported in accordance with the law of change inthe continuous signal proportional to regulate. They often useimported electrical signal proportional electro-magnet will beconverted into mechanical power or valves displacement volumecontrol. Can also use other forms of electrical control devices.Because of valves structure simple, reliable work, the lower theprice, performance than ordinary constant control valves havemarkedly improved, and through continuous electrical signalcontrol, and therefore, on many occasions, gained widespreadapplication.

防火閥[FIRE SAFE VALVE]
防火閥是指安裝在通風(fēng)、空調(diào)系統(tǒng)的送、回風(fēng)管路上，平時(shí)呈開啟狀態(tài)，火災(zāi)時(shí)當(dāng)管道內(nèi)氣體溫度達(dá)到70℃時(shí)自動(dòng)關(guān)閉，在一定時(shí)間內(nèi)能滿足耐火穩(wěn)定性和耐火完整性要求，起隔煙阻火作用的閥門。排煙防火閥是指安裝在排煙系統(tǒng)管道上，平時(shí)呈開啟狀態(tài)，火災(zāi)時(shí)當(dāng)管道內(nèi)氣體溫度達(dá)到280℃時(shí)自動(dòng)關(guān)閉，在一定時(shí)間內(nèi)能滿足耐火穩(wěn)定性和耐火完整性要求。起隔煙阻火作用的閥門。

Fire proof valve refers installed in the ventilation,air-conditioning systems to send, and the road back to the wind,opened in a state of fire when the temperature reached 70 degrees,the gas automatically closed in a certain period of time to meetthe fire resistance requirements of the stability and integrity offire resistance, a possible role of the fire fight valves. Smokeextraction fire fight valve refers smoke extraction systeminstalled in the pipeline, in an open state of the gas pipelinefires when the temperature reached 280 degrees automatically closedin a certain period of time to meet the fire resistance stabilityand fire resistance integrity. A possible role valves smoke proof.

防火閥有兩種，70度和280度，70度用于新風(fēng)機(jī)，當(dāng)溫度到達(dá)70度時(shí)關(guān)閉新風(fēng)機(jī)，證明已經(jīng)著火了，再別進(jìn)風(fēng)了。當(dāng)溫度達(dá)到280度時(shí)，關(guān)閉排煙風(fēng)機(jī)，要不然火會(huì)順著風(fēng)道燒到別的地方。一、防火閥從溫度劃分：有70攝氏度和280攝氏度的。 二、防火閥從控制劃分有手動(dòng)的和DC24V電磁鐵控制，即電動(dòng)的；三、防火閥從遠(yuǎn)近控制的有遠(yuǎn)程控制和本體控制的。

There are two kinds of fire proof valves , 70 degrees and 280degrees, 70 degrees for the new air-compressors, when thetemperature reached 70 degrees, the closure of the newair-compressors, has proven fire, another into the wind again. Whenthe temperature reached 280 degrees, the closure of smokeextraction air-compressors, or else the fire will run wind Roadreached elsewhere. 1, fire safe vavle from temperature divided : 70degrees Celsius and 280 degrees Celsius. Second, from control byfire safe valve DC24V electro-magnet and a manual control,electric; 3, fire safe valve far from the control of the remotecontrol and identity control.

三通閥[THREEWAY VALVE]
三通閥：誕生于50年代。三通閥有3個(gè)出入口與管道相連，相當(dāng)于兩臺(tái)單座閥合成一體。三通閥早是用于代替兩臺(tái)單座閥投入系統(tǒng)使用。三通閥分為合流和分流兩種。三通閥有3個(gè)出入口與管道相連，相當(dāng)于兩臺(tái)單座閥合成一體；使用三通閥時(shí)，可省掉一個(gè)兩通閥和一個(gè)三通接管。三通合流閥有兩個(gè)入口，一個(gè)出口，將兩種介質(zhì)混合成*三種介質(zhì)。三通分流閥有一個(gè)入口，兩個(gè)出口，將一種介質(zhì)經(jīng)過(guò)閥后分成兩路。

Three-way valve : born in the 1950s. Three-way valve has threeentrances and pipes, equivalent to two single-Block valvessynthetic one. Three-way valve is used to replace two single-Block,the first valve input system. Three-way valve into two hands andstreaming. Three-way valve has three entrances and pipes,equivalent to two single integrated Block valves; Use three-wayvalve, a two-valve and can be saved over a three links. Convergencedevices have two three links entrance, a export, two medium mixedinto the third medium. Three links a triage valves entrance, thetwo exports, a medium through valves will be divided into two afterthe road.

（1）三通閥可代替兩臺(tái)互為開關(guān)的兩個(gè)兩通閥使用，可省掉一個(gè)兩通閥和一個(gè)三通接管。（2）三通閥常用于熱交換系統(tǒng)旁路調(diào)節(jié)，也可以做簡(jiǎn)單配比調(diào)節(jié)。（3）三通閥使用介質(zhì)溫度應(yīng)小于300℃，兩種介質(zhì)溫度差應(yīng)小于150℃。（4）三通閥更換氣開氣閉時(shí)，必須更換執(zhí)行機(jī)構(gòu)。（5）DN＜80時(shí)，合流閥也可做分流閥用。

(1) The three-way valve to replace two mutually switches twotwo-valves used to save a two-valve and a three links takeover. (2)The three-way valve used to regulate heat exchange system exists,can do simple limited regulation. (3) three-way valve used to beless than 300 degrees medium temperature, two medium temperatureless than 150 degrees should be poor. (4) The three-way valvereplacement gas to gas shut, the executing agency must be replaced.(5) DN <80, Convergence valves also do triage valves.

氣動(dòng)調(diào)節(jié)閥[PNEUMATIC VALVE]
氣動(dòng)調(diào)節(jié)閥由氣動(dòng)執(zhí)行機(jī)構(gòu)和調(diào)節(jié)閥兩部組成。執(zhí)行機(jī)構(gòu)是執(zhí)行器的推動(dòng)裝置，它以壓縮空氣為動(dòng)力，輸出推力；調(diào)節(jié)閥是執(zhí)行器的調(diào)節(jié)部分，直接與介質(zhì)接觸，調(diào)節(jié)介質(zhì)的流量。由于氣動(dòng)調(diào)節(jié)閥具有結(jié)構(gòu)簡(jiǎn)單，動(dòng)作可靠，輸出推力大，維修方便，防火防爆和價(jià)廉等優(yōu)點(diǎn)，氣動(dòng)調(diào)節(jié)閥廣泛應(yīng)用于化工、石油、冶金、電力、輕紡等工業(yè)生產(chǎn)過(guò)程的自動(dòng)調(diào)節(jié)和遠(yuǎn)程控制中。

Pneumatic valves regulate the pneumatic enforcement agencies andregulatory valves two. Enforcement agencies to promote theimplementation of devices installed, it compressed air-driven,export thrust; Regulation valves are part of the implementation ofdevices to regulate direct contact with the media, regulatorymedium flow. The pneumatic - valve structure with simple, reliableoperation, export thrust large maintenance convenient andinexpensive, such as fire blast merits pneumatic - valve widelyused for chemical, oil, metallurgical, electrical, textile andother industrial production processes autopilot and remote control.

氣動(dòng)調(diào)節(jié)閥在公稱壓力和溫度范圍內(nèi)可調(diào)節(jié)各種液體、氣體和蒸氣，氣動(dòng)調(diào)節(jié)閥關(guān)閉時(shí)泄漏量小。氣動(dòng)調(diào)節(jié)閥按執(zhí)行機(jī)構(gòu)的作用方式可達(dá)到氣開或氣閉之目的。

Pneumatic valves regulate the temperature in the context nominalpressure and may adjust various fluids, gases and steam, pneumatic- valve closed, leakage small. Pneumatic-valve at the role of theimplementing agencies could reach a gas open or gas shut purposes

壓力調(diào)節(jié)閥[PRESSURE REGULATING VALVE]
壓力調(diào)節(jié)閥是一種無(wú)需外來(lái)能源而只依靠被調(diào)介質(zhì)本身的壓力變化進(jìn)行壓力自動(dòng)調(diào)節(jié)的節(jié)能型產(chǎn)品，您只需在壓力調(diào)節(jié)閥設(shè)備調(diào)試過(guò)程中根據(jù)自身工藝要求在壓力調(diào)節(jié)閥的引導(dǎo)指揮系統(tǒng)上設(shè)定壓力調(diào)節(jié)閥后壓力值，壓力調(diào)節(jié)閥就會(huì)將氣源壓力調(diào)節(jié)為您設(shè)定的閥后壓力并自動(dòng)維持其恒定

pressure regulating valve is a reliance on external energytransfer medium itself was pressure changes pressure-type automaticadjustment of product, you can adjust the valve in the pressureequipment debugging process in accordance with their own processespressure regulating valves for the guide command system setpressure after pressure regulating valves value, pressureregulating valves will be natural gas pressure regulating valves,the pressure for you to set and automatically maintain itsconstant;

壓力調(diào)節(jié)閥用于您在主控室內(nèi)遠(yuǎn)程控制下游氧氣流量；流量孔板用于將現(xiàn)場(chǎng)氧氣壓力調(diào)節(jié)閥組實(shí)際工藝參數(shù)反饋到主控室，使您可以方便地遠(yuǎn)程調(diào)控現(xiàn)場(chǎng)氧氣壓力調(diào)節(jié)閥組

Pressure regulating valves in the control room for your remotecontrol oxygen flow downstream; Flow will be used for on-siteoxygen pressure regulation and feedback to control the actualprocess parameters to control the distance. you can easily adjustthe oxygen pressure

溫控閥[TEMPERATURE CONTROL VALVE]
溫控閥主要起溫度控制作用.溫控閥的傳感器具有提供比例調(diào)節(jié)的充氣波紋管。溫控閥傳感器是由四周室溫控制,波紋管內(nèi)的效準(zhǔn)壓力與室溫負(fù)荷相對(duì)應(yīng)，該壓力由一個(gè)調(diào)整彈簧的張力來(lái)均衡。當(dāng)室溫上升時(shí)，溫控閥波紋管內(nèi)的液體壓力隨之上升，驅(qū)使溫控閥錐趨向關(guān)閉位置直至波紋管與彈簧之間得到平衡。

temperature control valve a major role in temperature control.temperature control valve sensors provide a ratio adjustment chargecorrugated pipes. temperature control valve from around the roomtemperature control sensors, corrugated effect of the load relativeto the prospective pressure and room temperature, the pressure froma spring tension adjustment to balance. When the room temperatureincreases, the liquid pressure temperature control valve corrugatedpipes have increased and driven temperature control valve cone isclosed position until corrugated balance between control andspring-loaded.

溫控閥可以根據(jù)用戶的不同要求設(shè)定室溫，它的感溫部分不斷地感受室溫并按照當(dāng)前熱需求隨時(shí)自動(dòng)調(diào)節(jié)熱量的供給，以防止室溫過(guò)熱，達(dá)到用戶高的舒適度。溫控閥可以自動(dòng)地按預(yù)定的要求保持的室溫，而不受氣候條件的影響。在每個(gè)房間內(nèi)安裝一個(gè)溫控閥，保障能夠充分利用陽(yáng)光、照明設(shè)施、機(jī)械和人體所散發(fā)的“免費(fèi)”熱能，以打到節(jié)省能源的效果。

temperature control valve according to the differentrequirements of users set room temperature, its temperatureconstant feeling of the current hot demand at room temperature andin accordance with the automatic adjustment of heat supply in orderto prevent overheating room temperature, users achieve the highestcomfort. temperature control valve can automatically according tothe requirements of maintaining accurate room temperature, withoutthe impact of climatic conditions. Installed in each room of atemperature control valve guarantee to make full use of sunlight,lighting, mechanical and human circulated by the "free" heat to hitthe effect of saving energy.

蝶閥[BUTTERFLY VALVE]
蝶閥是用隨閥桿轉(zhuǎn)動(dòng)的圓形蝶板作啟閉件,以實(shí)現(xiàn)啟閉動(dòng)作的閥門.蝶閥主要用截?cái)嚅y使用,亦可設(shè)計(jì)成具有調(diào)節(jié)或截?cái)嗉嬲{(diào)節(jié)的功能.目前蝶閥在低壓大中口徑管道上的使用越來(lái)越多

Butterfly valve is on/off by the turning of the stem whichoperate the round butterfly disc. It is mainly used as cut-offvalve and also can be designed as regulating or cut-off /regulating combined valve. currently , butterfly is mainly used inthe low pressure large size pipelines.

蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內(nèi)，圓盤形蝶板繞著軸線旋轉(zhuǎn)，旋轉(zhuǎn)角度為0°~90°之間，旋轉(zhuǎn)到90°時(shí)，閥門則牌全開狀態(tài)。

butterfly valve panels installed at the Tip of the diameterpipeline direction. In butterfly valve body flight corridors, thedisc-shaped Tip boards around rotary axis, rotation angle for 0°-90 meridian east between rotary to +90, the valves are open alllicence conditions.

蝶閥結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕，只由少數(shù)幾個(gè)零件組成。而且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡(jiǎn)單，同時(shí)該閥門具有良好的流體控制特性。蝶閥處于完全開啟位置時(shí)，蝶板厚度是介質(zhì)流經(jīng)閥體時(shí)*的阻力，因此通過(guò)該閥門所產(chǎn)生的壓力降很小，故具有較好的流量控制特性。蝶閥有彈密封和金屬的密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。

butterfly valve structure simple, small size, light weight, onlyby a few parts. But it can be rapidly open and close-90E, simple tooperate, while the fluid control valves have good character.butterfly valve a fully open position, Tip board thickness is onlywhen the medium flows through body resistance, the pressuregenerated by the air valves small, it has a better flow controlcharacteristics. butterfly valve a metal shells sealed and the twosealed sealed patterns. Flexible sealed valves, seal ring can embedin body or peripheral boards to Tip.