Large-diameter direct-acting type high-pressure solenoid valve

Abstract

The invention relates to a large-diameter direct-acting type high-pressure solenoid valve. The large-diameter direct-acting type high-pressure solenoid valve which is of a coaxial integral structure comprises a valve body, a coil housing, a coil, a spring, a valve core, a valve seat and an O ring, wherein the valve body is arranged on the upper part of the solenoid valve, medium inlet connecting threads are formed on the upper end of the valve body, a solenoid coil is wound on the circumference of the middle part of the valve body, and the coil housing is arranged on the outer side of the solenoid coil. According to a control method, a two-position two-way direct-acting type structure is adopted, the solenoid valve is opened after energization and is closed after deenergization, and a fluid medium flows into from the upper part of the valve body and flows out from the lower part of the valve seat. Compared with the prior art, the large-diameter direct-acting type high-pressure solenoid valve has the obvious advantages that (1) the diameter is large, the working pressure is high, the sustainable conduction time is long, and therefore, large-flow media can be continuously and stably supplied; (2) the action response speed is high (less than or equal to 10 ms), the solenoid coil of the solenoid valve is large, the sectional area of the valve core is large, so that large electromagnetic force can be generated, and therefore, the response speed is high.

Description

technical field [0001] The invention relates to the field of solenoid valves, in particular to a large-diameter direct-acting high-pressure solenoid valve. Background technique [0002] At present, domestic high-pressure solenoid valves with large diameters generally adopt a pilot-operated (unloading) structure, that is, when the power is turned on, the electromagnetic force opens the pilot valve core, and the pressure in the upper chamber drops rapidly, forming an up-down and down-high structure around the valve core. Pressure difference, the fluid pressure pushes the valve core to move upward, and the valve opens; when the power is off, the spring force closes the pilot hole, and the inlet pressure quickly passes through the bypass hole. On a high pressure differential, fluid pressure pushes the closure member down, closing the valve. The pilot solenoid valve has the characteristics of large diameter and high operating pressure, but the response speed of the solenoid valv...

AI Technical Summary

Problems solved by technology

Therefore, the traditional direct-acting or pilot-operated solenoid valves cannot meet the above requirements, and a new type of solenoid valve is needed to meet the requirements of a satellite attitude and orbit engine.

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