The servo valve PSSV-890-DF0056 is a key component in the wet cooling high and medium pressure combined cylinder unit of condensers in power plants in China, mainly used to control the high and medium pressure main and speed regulating valves. As an electromechanical converter, servo valve PSSV-890-DF0056 can conduct forward and reverse currents to the pilot section, achieving pressure control of the power valve.

The pilot part of servo valve PSSV-890-DF0056 can use various types such as nozzle baffle valve, nozzle valve, deflecting injection element valve, and slide valve. This enables the servo valve to adapt to different working conditions and maintain stable output pressure. At both ends of the power valve, the pressure is always maintained at a constant level to ensure the normal operation of the valve.

The output end of the servo valve includes four ports: P, A, B, and T, which transmit control signals to the servo cylinder to achieve precise control of valve opening. To ensure the normal operation of the servo valve, it is necessary to install a precision oil filter at the oil inlet to prevent impurities in the oil from damaging the servo valve.

Servo valves are usually installed near or above the servo cylinder to facilitate maintenance and repair. Due to the high working frequency, sensitivity, and control accuracy of servo valves, they can quickly receive output instructions from servo amplifiers, control the movement of internal slide valves, change the size of oil ports, and achieve precise control of valve opening adjustment for the unit. This helps to quickly adjust the unit load in a timely manner and meet the needs of external users with changes in electricity load.

Under normal working conditions, the action frequency of the servo valve is higher, so it is even more necessary to do a good job in daily protection. This includes regular cleaning, inspection, and maintenance of the servo valve to ensure the cleanliness of its working environment and prevent impurities in the oil from causing damage to the servo valve. At the same time, it is necessary to regularly replace the oil filter to ensure the cleanliness of the oil.

In summary, the servo valve PSSV-890-DF0056 plays a crucial role in the wet cooling, high and medium pressure combined cylinder units of power plant condensers. By precisely controlling the valve opening, rapid adjustment of the unit load can be achieved to meet the changes in external user electricity load. To ensure the normal operation of the servo valve, it is necessary to take regular protective measures, including regular cleaning, inspection, and maintenance, as well as regular replacement of the oil filter. Only in this way can the safe and stable operation of the wet cooling high and medium pressure combined cylinder unit of the power plant condenser be guaranteed.