Problem with draining the control valve
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The fluid inside the control valve is at a pressure of 20 kilograms, and it needs to be transferred to a tank with a pressure of 10 kilograms. Can the fluid inside the valve be completely drained in this way? There is a saying that goes like this: It can’t be completely drained, because the pressure is very low at the end! I believe that when a small amount of fluid remains in the pipe, the fluid pressure at that point can be equal to the pressure in the tank; therefore, it is also possible to drain the fluid by utilizing the pressure difference! Please give me some advice! ! !
I believe it is not possible to drain completely for the following reason: at first, the pressure inside the valve is higher than that inside the tank, so some fluid can be drained. As the pressure of the fluid inside the valve decreases and the pressure inside the tank increases, no more fluid can enter the tank. If further drainage is needed, the pressure of the fluid inside the valve must be increased.
Reply to 3# yunzhongzi112: The pressure inside the tank is stable, and the discharge of liquid has little effect on this pressure. When there is little fluid left in the discharge pipe, it can be assumed that the discharge pipe and the container are at the same pressure. By taking advantage of the inclination angle of the discharge pipe, the fluid should be able to be discharged smoothly. Please give your advice! ! !
This is a meaningless topic; the conditions provided are insufficient, and it’s not even known how much fluid there is
It should be impossible to drain completely, as the diameter of the drainage pipes is generally small; when there is pressure inside the tank, it’s difficult to remove the remaining liquid from the pipes relying solely on the difference in pressure.
Reply to 6# fd0253: I still think it’s possible to drain it completely. Since the pressure inside becomes equal to that in the tank after connection, what’s the reason why it can’t be drained completely given the difference in pressure as well? ? ?
Reply to 1# jinjinaaaaaaaa: My opinion is the same as the original poster’s; I believe that the potential difference can be used to drain everything completely
Reply to 7# Wu Hen1982: Is there any more experienced expert who can give an opinion?
Reply to 8# jinjinaaaaaaaa: In fact, those with more practical experience have more convincing answers to these questions! Generally, the piping of drain pipes should have a certain slope, and there should be no pouches or dead corners; unless there is a problem with the piping, the flow should be able to clear completely.