進(jìn)口帶指揮器調(diào)節(jié)閥
進(jìn)口自力式壓力調(diào)節(jié)閥|進(jìn)口單層百葉風(fēng)口帶調(diào)節(jié)閥|進(jìn)口風(fēng)口帶調(diào)節(jié)閥|進(jìn)口雙層百葉風(fēng)口帶調(diào)節(jié)閥|進(jìn)口散流器帶調(diào)節(jié)閥|進(jìn)口帶反饋器調(diào)節(jié)閥
無需外加能源，利用被控介質(zhì)自身能量作為動力源，引入調(diào)壓閥的指揮器以控制閥芯位置來改變截流面積，從而達(dá)到改變調(diào)壓閥介質(zhì)流量，使閥后壓力穩(wěn)定。
產(chǎn)品公稱壓力等級有PN1.6、4.0（MPa）；口徑范圍DN20～100；流量特性為快開。
壓力設(shè)定在指揮器上通過調(diào)節(jié)彈簧實現(xiàn)，因而方便、快捷、省力省時，可運(yùn)行狀態(tài)下連續(xù)設(shè)定，且結(jié)構(gòu)簡單，維護(hù)工作量小。
No additional energy is needed, the energy of the coolled medium is used as the power source, and the regulator of the pressure regulating valve is to the spool position to change the interception area, so as to change the flow rate of the pressure regulating valve and make the pressure behind the valve stable.
The nominal pressure level of the product is PN1.6, 4 (MPa), the caliber range is DN20 to 100, and the flow characteristic is fast.
The pressure setting is realized on the command by adjusting springs, so it is convenient, fast, labor-saving and time saving, and can be continuously set in running state, with simple structure and small maintenance
減壓比≤4000：1，控制精度高；
動作靈敏，密封性好；
廣泛應(yīng)用各種工業(yè)設(shè)備中用于氣體減壓穩(wěn)壓的自動控制，特別適用于儲罐的氮封系統(tǒng)。
截止閥作為附件，閥門在工作前關(guān)閉此截止閥，以防止超設(shè)定壓力和雜質(zhì)進(jìn)入執(zhí)行機(jī)構(gòu)，以保護(hù)執(zhí)行機(jī)構(gòu)內(nèi)的膜片和密封件，及超設(shè)定壓力而產(chǎn)生閥門整體打壞現(xiàn)象。
Decompression ratio less than 4000:1, high precision
Quick action, good sealing performance;
The automatic of gas pressure reducing pressure is widely used in various industrial equipment, and it is especially suitable for the nitrogen seal system of storage tank.
As the attachment, the valve closes the cut-off valve before so as to prevent the over setting pressure and impurities from entering the actuator, so as to protect the diaphragm and seal in the actuator and the over setting pressure, resulting in the overall failure of the valve.
閥體：ZG230-450、ZG1Cr18Ni9、ZG0Cr18Ni12Mo2Ti
閥芯、閥座：0Cr18Ni9、0Cr18Ni12Mo2Ti、0Cr18Ni9+堆焊司鈦萊合金、0Cr18Ni12Mo2Ti+堆焊司鈦萊合金、0Cr18Ni9+增強(qiáng)聚四氟乙烯
閥桿：0Cr18Ni9、0Cr18Ni12Mo2Ti
膜蓋：Q235A、1Cr18Ni9Ti
膜片：ding腈橡膠夾增強(qiáng)滌綸織物、氟橡膠
Valve body: ZG230-450, ZG1Cr18Ni9, ZG0Cr18Ni12Mo2Ti
Valve core and seat: 0Cr18Ni9, 0Cr18Ni12Mo2Ti, 0Cr18Ni9+ surfacing titanium alloy, 0Cr18Ni12Mo2Ti+ surfacing titanium alloy, 0Cr18Ni9+ reinforced polytetrafluoroethylene
Stem: 0Cr18Ni9, 0Cr18Ni12Mo2Ti
Membrane cover: Q235A, 1Cr18Ni9Ti
Diaphragm: acrylonitrile rubber clamp reinforced polyester fabric, fluorine rubber
根據(jù)工藝要求提前給閥門設(shè)定壓力（就是擰螺絲調(diào)閥內(nèi)部彈簧壓縮程度），閥內(nèi)部彈簧和閥出口測壓管線通過力學(xué)平衡元件（氣缸內(nèi)有像活塞的可移動膜片）連接。流體壓力大時，閥出口測的壓力大于設(shè)定壓力，壓差推動膜片，帶動彈簧被壓縮，彈簧帶動閥芯關(guān)小，出口壓力就變小，直到出口壓力等于設(shè)定壓力；壓力小時，閥就開大些；閥門開關(guān)和調(diào)節(jié)閥相似，只是自力式閥的開閥動力源于流體自身的能量通過轉(zhuǎn)化變成動力。
自力式調(diào)節(jié)閥都利用閥輸出端的反饋信號（壓力、壓差、溫度）通過信號管傳遞到執(zhí)行機(jī)構(gòu)驅(qū)動閥瓣改變閥 門的開度，達(dá)到調(diào)節(jié)壓力、流量、溫度的目的。
直接作用 直接作用式調(diào)節(jié)閥又稱為彈簧負(fù)載式調(diào)節(jié)閥，其結(jié)構(gòu)內(nèi)有彈性元件：如彈簧、波紋管、波紋管式的溫包等，利用彈性力與反饋信號平衡的原理。
間接作用 間接作用式調(diào)節(jié)閥，增加了一個指揮器（先導(dǎo)閥）它起到對反饋信號的放大作用然后通過執(zhí)行機(jī)構(gòu)，驅(qū)動主閥閥瓣運(yùn)動達(dá)到改變閥開度的目的。
如果是壓力調(diào)節(jié)閥，反饋信號就是閥的出口壓力，通過信號管引入執(zhí)行機(jī)構(gòu)。
如果是流量調(diào)節(jié)閥，閥的出口處就有一個孔板（或者是其他阻力裝置）由孔板兩端取出壓差信號引入執(zhí)行機(jī)構(gòu)。
如果是溫度調(diào)節(jié)閥，閥的出口就有溫度傳感器（或者溫包）通過溫度傳感器內(nèi)介質(zhì)的熱脹冷縮驅(qū)動執(zhí)行機(jī)構(gòu)。
According to the requirements of the process, the pressure is set in advance for the valve, that is, the compression degree of the internal spring of the screw adjusting valve. The valve internal spring and the valve outlet pressure measuring pipeline are connected through the mechanical balance element (a movable diaphragm in the cylinder). The fluid pressure, the valve outlet measuring pressure is greater than the set pressure, differential pressure to push the diaphragm, driven by the spring is compressed, the spring drives the valve core to close small, outlet pressure becomes small, until the outlet pressure is equal to the set pressure; pressure valve opening hours; valve switch and valve similar, just self operated valve open the valve in the fluid of its energy by converting into power.
Self regulating valve are using the output feedback signal valve (pressure, pressure, temperature) through the signal tube opening is transferred to the actuator valve to change the valve, to adjust the pressure, flow rate, temperature of the.
Directly direct acting valve is also called the spring loaded valve, its structure and elastic components, such as springs, bellows, bellows type bulb, using elastic force and the principle of balance between the feedback signal.
Indirect effect indirect acting valve, added a pilot (pilot valve) which plays a role in the amplification of feedback signal and then through the implementing agencies, driving the main valve valve valve movement to achieve the purpose of changing the valve opening.
If the pressure regulating valve is the valve, the feedback signal is the outlet pressure of the valve, and the actuator is through the signal tube.
In the case of a flow regulating valve, a hole board (or other resistance device) at the outlet of the valve is to the actuator by removing differential pressure signals at both ends of the plate.
If it is a temperature regulating valve, the outlet of the valve has a temperature sensor (or Wen Bao) to drive the actuator through the thermal expansion and of the medium in the temperature sensor.
