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增壓泵自控閥由哪些部分組成?

發布時間:2021-12-02 20:19:40   發布人:http://www.vitagia.com
增壓泵自控閥分為三個部分:主閥體、膜片控制室及旁通管,以膜片為界,膜片以上為上腔,與排水管道相連通,膜片以下為下腔,與閥門進水口管道相連接,小閥板固定在閥桿上,大閥板在閥桿上上下滑動。當電機啟動后,閥門進口處壓力逐漸增加,壓力水:
The automatic control valve of booster pump is divided into three parts: main valve body, diaphragm control room and bypass pipe. With the diaphragm as the boundary, the upper cavity above the diaphragm is connected with the drainage pipe, and the lower cavity below the diaphragm is connected with the valve inlet pipe. The small valve plate is fixed on the valve rod, and the large valve plate slides up and down on the valve rod. When the motor is started, the pressure at the valve inlet increases gradually, and the pressure water:
1)產生推動大閥板向上的力,此時閥門不能立即打開(因為膜片控制上腔有背壓)。
1) When the force pushing the large valve plate upward is generated, the valve cannot be opened immediately (because there is back pressure in the upper chamber of diaphragm control).
2)壓力通過旁通管進入膜片控制腔下腔。隨著下腔進水量增加,當下腔的壓力大于上腔的壓力時,下腔壓力水推動膜片往上移動,這時小閥板沒有對大閥板施加壓力。
2) The pressure enters the lower chamber of the diaphragm control chamber through the bypass pipe. With the increase of water inflow into the lower chamber, when the pressure in the lower chamber is greater than that in the upper chamber, the pressure water in the lower chamber pushes the diaphragm upward. At this time, the small valve plate does not exert pressure on the large valve plate.
氣液增壓泵
3)大閥板有一種力推動其往上移動,在這兩個力的作用下,閥門逐漸打開,從而達到啟泵時輕載、閉閘、緩開的目的。當突然停電或事故停泵或正常停泵時,閥門進水口處壓力水流速降低,大閥板也隨之下降,當其流速為零時(即進水口處流速為零時),大閥板由于自身重力而迅速關閉(時間3s~5s),可防止大部分水倒流,此時閥門前后形成一種水壓差,壓力水一方面通過小閥板底部的三條泄壓槽進行泄壓。
3) The large valve plate has a force to push it upward. Under the action of these two forces, the valve will gradually open, so as to achieve the purpose of light load, closing and slow opening when starting the pump. In case of sudden power failure, accidental pump shutdown or normal pump shutdown, the pressure water flow velocity at the valve inlet decreases, and the large valve plate also decreases. When the flow velocity is zero (i.e. when the flow velocity at the water inlet is zero), the large valve plate closes rapidly due to its own gravity (for 3S ~ 5S), which can prevent most of the water from flowing back. At this time, a water pressure difference is formed in front of and behind the valve, On the one hand, the pressure water is relieved through three pressure relief grooves at the bottom of the small valve plate.
4)壓力水從旁通管進入膜片控制室上腔(此過程為吸壓腔,能有效吸收一部分水能量),當上腔壓力水大于下腔時,壓力水推動膜片往下移動,當下腔壓力水全部被擠出來時,小閥板緩緩下降,恢復到待機狀態,此過程中緩閉時間可調節(3s~150s),屆時閥板已全部關閉,滴水不漏。正因為其停機時具有速閉、線性泄壓、吸壓腔及緩閉等四種水錘消除功能,故停機時無一點響聲產生,效果很好。
4) The pressure water enters the upper chamber of the diaphragm control room from the bypass pipe (this process is a pressure absorption chamber, which can effectively absorb part of the water energy). When the pressure water in the upper chamber is greater than that in the lower chamber, the pressure water pushes the diaphragm down. When all the pressure water in the lower chamber is squeezed out, the small valve plate slowly drops and returns to the standby state. The slow closing time in this process can be adjusted (3S ~ 150s), At that time, all valve plates have been closed without leakage. Because it has four water hammer elimination functions such as quick closing, linear pressure relief, pressure suction chamber and slow closing, there is no sound during shutdown, and the effect is very good.
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