I. Working principle
1. High temperature and high pressure power station gate valve
The high temperature and high pressure power station gate valve changes the flow rate and kinetic energy of the fluid in the pipeline system by changing the throttling area, and after producing different degrees of pressure loss, the purpose of reducing the pressure inside the pipeline is achieved. Through careful control and adjustment, the fluctuation of the internal pressure of the power station valve and the spring force are balanced, and finally the pressure behind the valve in the pipeline is kept constant within a certain error range.
The high temperature and high pressure power station gate valve uses the hydraulic working principle to achieve control. As a component for adjusting and throttling local pressure changes, the high temperature and high pressure power station gate valve adjusts the inlet pressure to reduce it to a certain set outlet pressure range, and then relies on the energy of the medium itself to keep the outlet pressure automatically stable.
2. High temperature and high pressure power station stop valve
The high temperature and high pressure power station stop valve is a power station stop valve that controls the pressure behind the valve according to the numerical ratio. The ratio of the pressure before the valve to the pressure after the valve is 2:1, 3:1, etc. The pressure behind the valve changes with the change of the pressure before the valve. The pressure behind the valve is not kept constant, but it is kept at a certain ratio with the pressure before the valve. When the pressure before the valve increases, the pressure after the valve increases proportionally. When the pressure before the valve decreases, the pressure after the valve decreases proportionally, keeping the inlet and outlet pressure ratio of the power station stop valve unchanged.