Solenoid valve D-32545 is a high-reliability electromagnetic drive device designed for complex working conditions in power plants. Its core function is to accurately control the on/off, flow direction and pressure parameters of fluid media through electromagnetic force. As a key control element in power plants, this valve is widely used in boiler systems, steam turbine EH oil circuits, hydrogen-cooled unit sealing oil circuits and other scenarios to ensure stable operation of equipment under high temperature and high pressure environments.

Technical parameters

1. Electrical characteristics: 24V DC power supply, 8W power, suitable for low-energy consumption control systems, and meets the safety requirements of explosion-proof areas.

2. Mechanical structure: The valve body is made of stainless steel precision casting, with a high-hardness valve core and polytetrafluoroethylene composite sealing components integrated inside, with a pressure rating of 35MPa and a leakage rate of less than 0.01mL/min.

3. Environmental adaptability: Protection grade IP67, can work stably in a wide temperature range of -40℃ to +180℃, and anti-vibration performance meets IEC 60068-2-6 standards.

4. Response characteristics: action time ≤15ms, repeated positioning accuracy ±0.5%, support high-frequency opening and closing operations (≥100,000 times/year).

The solenoid valve D-32545 adopts a pilot drive structure, and its work flow is divided into two stages:

1. Electromagnetic excitation stage: After power is turned on, the coil generates an axial magnetic field, drives the pilot valve core to move, and releases the main valve cavity pressure.

2. Main valve action stage: The main valve core responds quickly under the action of pressure difference, and the flow channel switching is achieved through the precise matching of the conical sealing structure.

Compared with the direct-acting structure, this design reduces power consumption by 75%, and at the same time ensures that the valve position quickly returns to zero when power is off through a dual redundant spring reset mechanism to avoid the risk of medium retention.

Typical application scenarios of power plants

1. Boiler feed water system: As a safety interlock valve, it cuts off the water supply pipeline within 0.5 seconds when the pump group is detected to be abnormal, preventing the drum from drying out.

2. Steam turbine EH oil circuit: integrated in the AST (automatic shutdown protection) system, the oil pressure gradient control is realized through multi-valve parallel connection, with an accuracy of ±0.2bar.

3. Generator sealing oil system: cooperate with the HSND series main sealing oil pump to realize the dynamic balance control of hydrogen oil pressure difference, with a fluctuation range of ≤50Pa.

4. Desulfurization and denitrification system: control the injection flow of lime slurry, with an adjustment accuracy of 2%-100%, and adapt to corrosive media with a pH value of 2-12.

The solenoid valve D-32545 can be quickly replaced through modular design, significantly reducing the maintenance cost of the power plant. As a key component of the intelligent power plant transformation, the D-32545 series has gradually integrated edge computing functions, supports deep collaboration with the DCS system, and promotes the control accuracy of traditional power plants to 0.1%FS level.

By the way, we have been supplying spare parts for power plants around the world for 20 years, and we have rich experience and hope to be of service to you. Looking forward to hearing from you. My contact information is as follows:

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