Large-flow three-stage pilot type electromagnetic valve

A pilot-operated solenoid valve and large flow technology, applied in the direction of valve lift, valve details, valve device, etc., can solve problems such as failure to meet system index requirements, excessive pressure load, slow response speed, etc., and achieve the miniaturization of the overall structure And lightweight design, control structure size, increase the effect of inflation speed and exhaust speed

Active Publication Date: 2019-11-22
XIAN AEROSPACE PROPULSION INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of the existing valves in the case of large flow and small flow resistance that the pressure load is too large, the response speed is slow, and the system index requirements cannot be met, and a large flow three-s

Method used

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  • Large-flow three-stage pilot type electromagnetic valve

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing and specific embodiment content of the present invention is described in further detail:

[0047] Such as figure 1 As shown, a large-flow three-stage pilot solenoid valve includes a first-stage solenoid pilot valve 3 , a second-stage air control pilot valve 2 and a three-stage control main valve 1 .

[0048] Wherein, the first-stage solenoid pilot valve 3 is a two-position three-way solenoid valve, including a solenoid pilot valve body 31 , a solenoid pilot valve core 32 , a solenoid pilot valve spring 34 and a coil 33 . The solenoid pilot valve body 31 is provided with a control gas inlet, a control gas outlet and a control gas exhaust port, wherein the solenoid pilot valve core 32 is located in the solenoid pilot valve body 31 and is compatible with the solenoid pilot valve body 31 The solenoid pilot valve spool 32 is provided with an air flow channel for connecting the control air outlet and the control air exhaust port...

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Abstract

The invention provides a large-flow three-stage pilot type electromagnetic valve which solves the problems that the pressure load is too large, the response speed is slow and the system index requirement cannot be met under the conditions of large flow and small flow resistance of an existing valve. The high-flow three-stage pilot type electromagnetic valve comprises a first-stage electromagneticpilot valve, a second-stage pneumatic control pilot valve and a third-stage control main valve; the third-stage control main valve comprises a main valve body, a main valve core and a main valve spring; the main valve core is hermetically arranged in the main valve body, and two independent air cavities, namely an air opening cavity and a main valve spring mounting cavity are formed between in main valve body; the main valve body is provided with a medium inlet and a medium outlet; the main valve spring is arranged in the spring mounting cavity and provides closing force for the main valve core, so that the medium inlet and the medium outlet are blocked; the first-stage electromagnetic pilot valve controls the on-off of a gas path of the second-stage pneumatic control pilot valve through on-off of power, and the second-stage pneumatic control pilot valve is used for controlling inflation and exhaust of the air opening cavity and providing opening force for the main valve core.

Description

technical field [0001] The invention belongs to the electromagnetic control valve technology, and specifically relates to a three-stage pilot solenoid valve with large flow rate, which can be used as a large-flow fast-response control valve for high-pressure medium in liquid rocket engines, satellite in-orbit execution power systems, and ground test systems, to realize the control valve. On-off and sealing control of medium passage. Background technique [0002] With the transformation and upgrading of aerospace equipment, the tactical and technical indicators of the power system continue to improve, and the requirements for the response performance of the engine are increasing. The large flow and fast response control valve technology has become a key technology that restricts the performance of equipment. In a liquid injection system, the requirements for the development of a large-diameter fast-response control valve with a flow rate of 5kg / s (flow resistance required to ...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/32F16K1/46F16K27/02F16K31/06
CPCF16K1/00F16K1/32F16K1/465F16K27/02F16K31/0655
Inventor 罗大亮张思坤曾维亮朱建国张萍刘永安
Owner XIAN AEROSPACE PROPULSION INST
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