Fuel-tank inert gas control device

A technology of a control device and a fuel tank, which is applied in the aviation field, can solve the problems of high requirements and low reliability of the flow regulating valve, and achieve the effects of high safety and reliability, simple structure and weight reduction.

CN101891017AActive Publication Date: 2010-11-24XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Publication Date: 2010-11-24

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Abstract

The invention relates to a fuel-tank inert gas control device, which belongs to the field of aero-technology. The fuel-tank inert gas control device comprises a small flow limit hole, a small flow pipeline, a small check valve, a safety valve, a large check valve, a pressure reducer, a large flow limit hole, a large flow pipeline, and a block valve and the like, wherein in the two inert gas pipelines, one is used for controlling the normally-open feeding of the inert gas with low oxygen content and low flow under the action of the flow limit holes, and the other one is used for controlling the discontinuous feeding of the inert gas with high oxygen content and large flow according to the pressure demands of the fuel tank through the cooperation of the flow limit holes, the pressure reducer and the block valve. Through the cooperation among the flow limit holes and the pressure reducer and the like, the fuel-tank inert gas control device has the advantages of realizing the oxygen content and pressure controls of the inert gas in the fuel tank, and improving the working reliability. Meanwhile, the oxygen content control of the inert gas in the fuel tank has a larger margin and can reduce the requirements for oxygen content of the feed gas when the plane drops, so the fuel-tank inert gas control device can reduce the scale of the air separator, and reduce the cost and weight thereof.

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Description

technical field

[0001] The invention belongs to the technical field of aviation and relates to a fuel tank inerting control device. Background technique

[0002] Fuel tank inerting is an important technical measure to improve aircraft safety, and fuel tank inerting control is a key technology to ensure that the fuel tank inerting performance meets safety requirements. Flow regulating valves are used abroad to control the oxygen concentration and intake air volume of the fuel tank inerting gas. Due to the complicated changes in the flight state, the flow regulating valve is in the regulating working state for a long time, which requires high reliability of the flow regulating valve, especially the reliability of domestic products is low, and it is difficult to meet the actual requirements. Contents of the invention

[0003] The object of the present invention is: in order to solve the problem of high requirements on the flow regulating valve and low reliability of the fuel...

Claims

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