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Pilot-operated type electromagnetic valve

A pilot-operated solenoid valve and electromagnet technology, applied in jet propulsion devices, rocket engine devices, machines/engines, etc., can solve problems such as inability to adjust on-site, achieve environmental friendliness, simplify engine systems, and reduce weight.

Pending Publication Date: 2021-09-24
北京星河动力航天科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this solution is that the opening pressure of the one-way valve is a fixed value. If the parameters do not match during the system debugging stage, it cannot be adjusted on site.

Method used

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  • Pilot-operated type electromagnetic valve
  • Pilot-operated type electromagnetic valve
  • Pilot-operated type electromagnetic valve

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Experimental program
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Effect test

Embodiment Construction

[0018] A pilot solenoid valve according to the present invention consists of an electromagnet assembly 1, an armature 2, a main valve body 3, an end cover 4, a main valve core 5, a pilot valve core 6, a pilot valve body 7, a top Rod 8, nozzle 9, upper sealing seat 10, lower sealing seat 11, valve inlet 12, valve outlet 13, springs 15, 18, O-rings 14, 17, 19, screws 16, 20, ejector rod 8 and armature 2 Through screw connection, the armature 2 is installed in the electromagnet assembly 1, the pilot valve core 6 is installed in the pilot valve body 7, the pilot valve body 7 is connected with the electromagnet assembly 1 and the main valve body 3 by screws, the main The valve core 5 is installed in the main valve body 3, the end cover 4 is connected with the main valve body 3 through screws, and a nozzle 9 is provided at the discharge port of the pilot valve body 7, the pilot valve body 7 and the ejector rod 8 and the main valve body 3 are sealed with O-rings 14 and 19;

[0019] ...

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Abstract

The invention discloses a pilot-operated type electromagnetic valve. The pilot-operated type electromagnetic valve comprises an electromagnet assembly, an armature, a main valve body, an end cover, a main valve element, a pilot valve element, a pilot valve body, an ejector rod, a filler neck, an inlet, an outlet, a spring, an O-shaped ring and a screw; the O-shaped ring is arranged between the pilot valve body and the ejector rod for sealing; the filler neck is arranged on the pilot valve body; a backpressure cavity of the main valve element can communicate with the external environment through the filler neck in the valve opening state; and the pilot valve body and the main valve body are sealed through the O-shaped ring. According to the technical scheme, the pilot-operated type electromagnetic valve has the beneficial effects of being large in drift diameter, high in work pressure, environment-friendly and convenient to install.

Description

technical field [0001] The invention relates to a pilot solenoid valve, in particular to a pilot solenoid valve for fuel supply during the starting process of a liquid oxygen kerosene rocket engine. Background technique [0002] Fuel enters the thrust chamber during the start-up process of the existing rocket engine. As described in the book "High Pressure Supplementary Combustion Liquid Oxygen Kerosene Engine" published by National Defense Industry Press in 2005, the author is Academician Zhang Guitian, and there are generally two options: [0003] Two-position three-way solenoid valve + pneumatic control valve scheme, such as figure 1 , mainly composed of pneumatic control valve 1, cylinder 2, two-position three-way solenoid valve 3, gas pipeline 4, fuel inlet 5, fuel outlet 6, gas inlet 7, and gas discharge port 8: this scheme needs to set up one way to control gas, At the same time, a two-position three-way solenoid valve is also set to control the gas switch. When the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/58F02K9/60
CPCF02K9/58F02K9/60
Inventor 不公告发明人
Owner 北京星河动力航天科技股份有限公司
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