High-pressure air flow control valve

Abstract

The invention discloses a high-pressure air flow control valve. The high-pressure air flow control valve comprises an air conveying pipe and a butterfly valve installed on the air conveying pipe and further comprises a pneumatic actuator and a pressure adjusting device, wherein the pneumatic actuator is connected with a pressure control pipe and capable of driving the butterfly valve to rotate between a full-open position and a full-close position through a connection rod; and the pressure adjusting device can adjust the size of air pressure entering the pneumatic actuator through the pressurecontrol pipe. According to the high-pressure air flow control valve, flow adjustment of the air conveying pipe can be realized through simple structures, meanwhile, multiple pressure adjusting protection is realized through the adjusting device, the high-pressure air flow control valve is made to have a wide pressure use range, and the high-pressure air flow control valve has less components andparts integrally and higher reliability and accuracy and is convenient to maintain and repair in later period and relatively low in cost.

Description

technical field [0001] The invention relates to the technical field of flow regulation of an aircraft bleed air system, in particular to a high-pressure air flow control valve. Background technique [0002] The bleed air system plays a vital role in the adjustment of cabin pressure, temperature, anti-icing, engine thrust, etc. inside the aircraft. The flow control valve is an important part of the bleed air system. The air flow is adjusted through the flow control valve to achieve pressure and temperature In the prior art, most of the flow control valves adopt the full gas control mode or the pure mechanical control mode, the control structure is complex, the reliability is not high, non-command shutdown faults are prone to occur, and the product range is narrow , the maintenance cost is relatively high. Contents of the invention [0003] In order to solve the above problems, the present invention provides a high-pressure air flow control valve, which simplifies the overa...

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Problems solved by technology

[0002] The bleed air system plays a vital role in the adjustment of cabin pressure, temperature, anti-icing, engine thrust, etc. inside the aircraft. The flow control valve is an important part of the bleed air system. The air flow is adjusted through the flow control valve to achieve pressure and temperature In the prior art, most of the flow control valves adopt the full gas control mode or the pure mechanical control mode, the control structure is complex, the reliability is not high, non-command shutdown faults are prone to occur, and the product range is narrow , the maintenance cost is relatively high

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