The shut-off valve HGPCV-02-B30 is a pressure control valve used in the EH oil system of power plants, with automatic control function. It can control the oil on/off according to the set action pressure value, prevent oil from emptying, and ensure stable oil pressure on the main pipe. This product has the following characteristics and working principle of regulating pressure.

Firstly, the shut-off valve HGPCV-02-B30 adopts the automatic control principle to control the oil on and off based on the set operating pressure value. When leaving the factory, the valve will undergo pressure calibration to ensure the accuracy of the operating pressure value. This self-control principle enables the valve to effectively control the flow of oil according to demand.

Secondly, the operating pressure value of the valve can be adjusted to meet the needs of different units. Generally speaking, for 300MW units, the operating value at the factory is set to 4.5 MPa. When the oil pressure reaches the set action pressure value, the valve will automatically block the flow of oil to the servo valve, achieving oil control.

The shut-off valve HGPCV-02-B30 also has the function of preventing oil from emptying. When the turbine is tripped, if the command given by the servo card to the servo valve is not reset, the oil will continue to be discharged through the servo valve, causing a decrease in oil pressure on the main pipe. However, the design of the shut-off valve HGPCV-02-B30 can effectively prevent the occurrence of the above situation. It can automatically block the oil passage, maintain stable oil pressure on the main pipe, and ensure the normal operation of the system.

In short, the shut-off valve HGPCV-02-B30 adjusts the pressure by setting the operating pressure value. Perform pressure calibration on the valve body at the factory to ensure the accuracy of the action pressure value. By adjusting the action pressure value, the opening or closing timing of the valve can be changed, thereby controlling the on-off of the oil. When the oil pressure reaches the set action pressure value, the valve will automatically close, blocking the flow of oil to the servo valve, achieving precise pressure regulation. The shut-off valve HGPCV-02-B30 plays an important role in the EH oil system of power plants, ensuring the safe and stable operation of the system.

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