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Pilot-operated type electromagnetic pneumatic valves and combined control valve

An electromagnetic pneumatic valve, pilot-operated technology, applied in the field of control valves, can solve the problems of not meeting the system design requirements, low working pressure, small flow capacity, etc., and achieve the effect of overcoming adverse effects, reducing driving load, and reducing friction

Active Publication Date: 2017-07-28
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing two-component, fast-response control valve does not meet the system design requirements due to its large size and structure, low working pressure, and small flow capacity

Method used

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  • Pilot-operated type electromagnetic pneumatic valves and combined control valve
  • Pilot-operated type electromagnetic pneumatic valves and combined control valve
  • Pilot-operated type electromagnetic pneumatic valves and combined control valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0045] The present invention is described in detail below in conjunction with the embodiment that accompanying drawing provides:

[0046] see figure 1 , a pilot-operated electromagnetic pneumatic valve, including a valve body 1, a pilot valve spool assembly, a main valve spool assembly and an electromagnetic coil drive device 2, the valve body 1 is provided with a pilot valve core installation cavity 9, a main valve core installation cavity 10. Air inlet 12, exhaust port 13, medium inlet 14 and medium outlet 15.

[0047] The pilot valve spool assembly is arranged in the pilot valve spool installation chamber 9 , the pilot valve spool assembly includes the pilot spool 3 , the first return spring 4 and the sealing element A5 ; the main valve spool assembly includes the main spool 6 .

[0048] The guide valve core installation cavity 9 is divided into the upper part 91 of the cavity, the upper part 92 of the cavity, the lower part 93 of the cavity and the lower part 94 of the ca...

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Abstract

The invention belongs to the field of control valves and particularly relates to pilot-operated type electromagnetic pneumatic valves and a combined control valve. Each pilot-operated type electromagnetic pneumatic valve mainly comprises a valve body, a pilot-valve valve core component, a main-valve valve core assembly and an electromagnetic coil drive device. Each electromagnetic coil drive device is powered on to drive a pilot valve to be switched on and controls air to enter a pilot-valve core installation cavity, an exhaust opening is sealed, the air is controlled to establish pressure, then a main valve is driven to be switched on, and a medium flows out of a medium outlet from a medium inlet; and after each electromagnetic coil drive device is powered off, the pilot valve is switched off, the air is controlled to be exhausted out of the exhaust opening, the main valve is switched off, and the medium is prevented from flowing out of the medium outlet. The combined control valve is a combination of the multiple pilot-operated type electromagnetic pneumatic valves, the structure is optimized, and the combined control valve is suitable for occasions, such as a rocket with a high requirement for the radial size. The pilot-operated type electromagnetic pneumatic valves and the combined control valve are mainly used for occasions with a large flow and high pressure, such as, liquid rocket engines, satellite in-orbit execution systems, ground test systems and automated fluid pipe systems and have the advantages of being high in integrated degree and high in response speed.

Description

technical field [0001] The invention belongs to the field of control valves, in particular to a pilot-operated electromagnetic pneumatic valve and a combined control valve. Background technique [0002] Electromagnetic pneumatic valves are often used in aerospace, mainly used to control the startup and shutdown of orbital control engines. With the continuous development of space propulsion technology, the system has continuously improved the requirements for the development of electromagnetic pneumatic valve products, which are mainly reflected in the following aspects: 1) The working medium of the product is flammable, explosive and corrosive, so it has great impact on reliability and safety. High requirements; 2) Small size and light weight; 3) Fast response is required under large flow conditions. Due to the special requirements of the product, the traditional solenoid valve cannot meet the requirements of small size and fast response. Therefore, it is necessary to deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K31/12F16K1/36F16K1/32F16K27/02
CPCF16K1/32F16K1/36F16K27/0263F16K31/0675F16K31/12
Inventor 魏学峰罗大亮孙亮宋会玲曾维亮王可立刘莎莎
Owner XIAN AEROSPACE PROPULSION INST
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