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Large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve

A rack-driven, large-diameter technology, applied in valve details, valve devices, engine components, etc., can solve the problem of difficult to meet the needs of large flow, rapid discharge and high-reliability action, and achieve stable and reliable transmission mechanism, high power, Make sure to turn off the reset effect

Inactive Publication Date: 2021-02-02
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the existing electromagnetic control valve is difficult to meet the requirements of large flow, fast discharge and high reliability action, the present invention provides a large diameter electromagnetic pilot air control piston rack drive ball valve

Method used

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  • Large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve
  • Large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve

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Embodiment Construction

[0024] Such as figure 1 As shown, the large-diameter electromagnetic pilot air-operated piston rack drive ball valve provided by the present invention includes a small-sized electromagnetic auxiliary valve, a pneumatic piston rack-and-pinion transmission mechanism and a large-diameter main valve; the electromagnetic auxiliary valve is a control valve, which is controlled by pneumatic The piston rack and pinion transmission mechanism drives the large-diameter main valve.

[0025] The electromagnetic auxiliary valve includes an auxiliary valve body 13, an auxiliary valve core 12, an intake valve seat 17, an exhaust valve seat 18, an electromagnetic coil 10, and an auxiliary spring 11; the auxiliary valve body 13 is integrated with the valve body 1 and communicated; The valve seat 18, the auxiliary valve core 12 and the intake valve seat 17 are sequentially arranged in the auxiliary valve body 13 from top to bottom. 17 is provided with an air inlet that runs through the lower pa...

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Abstract

In order to solve the technical problem that the existing electromagnetic control valve can hardly meet the requirements of high-flow quick discharge and high-reliability action, the invention provides a large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve which comprises a pneumatic piston rack and gear shaft transmission mechanism, an electromagnetic auxiliary valve and a main valve. The electromagnetic auxiliary valve is of a two-position three-way valve structure and used for achieving inflation pressure building and exhaust pressure relief in a pistonair cavity of the pneumatic piston rack and gear shaft transmission mechanism, and therefore the on-off control over the large-diameter main valve by the small-size electromagnetic auxiliary valve isachieved through the pneumatic piston rack and gear shaft transmission mechanism, and the purpose of electromagnetic pilot control is achieved.

Description

technical field [0001] The invention relates to a large-diameter electromagnetic pilot air-controlled piston rack drive ball valve, which can be used as a high-pressure and large-flow medium on-off control valve for liquid rocket engines, aircraft propulsion power systems, and ground test systems to control the on-off discharge of liquid media. and engine start and shutdown. Background technique [0002] In the development of a certain type of propulsion system engine, the system proposes the development requirements of a large-diameter electric propellant discharge control valve, which requires the valve to be kept closed and sealed when it is not working, and the discharge outlet can be quickly opened through electric control when it is working, so that the storage The remaining propellant in the tank is quickly discharged to the outside of the engine system to ensure the safety of the power system when the aircraft returns. However, the existing electromagnetic control v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K5/20F16K31/122F16K31/54F16K31/06
CPCF16K5/06F16K5/08F16K5/201F16K31/122F16K31/54F16K31/0603
Inventor 罗大亮王可立张思坤徐登伟祁增强刘永安
Owner XIAN AEROSPACE PROPULSION INST
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