Center-outboard wing fuel delivery system pipeline airtight test device and method

A technology of airtight test and oil system, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, which can solve the problems of limited operating space and inconvenient operation of the system

Inactive Publication Date: 2019-08-20
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operating space of the system is limited and inconvenient to operate

Method used

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  • Center-outboard wing fuel delivery system pipeline airtight test device and method
  • Center-outboard wing fuel delivery system pipeline airtight test device and method
  • Center-outboard wing fuel delivery system pipeline airtight test device and method

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Embodiment

[0035] The invention discloses a method and a device for the airtightness test of the pipeline of the oil supply system of the middle and outer wings. Taking a certain type of transport plane as the platform, it consists of six parts: threaded cap 01, sealing rubber gasket 02, separate screw sleeve 03, threaded plug 04, sealing rubber pad 05 and separate screw sleeve 06.

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Abstract

The invention belongs to the technical field of aviation manufacturing, and provides a center-outboard wing fuel delivery system pipeline airtight test device and method. The method comprises steps: two half pipe threads of a first split screw sleeve (03) and a second split screw sleeve (06) surround a flared tube of a tested product, close to a small boss, a thread plug cap (01) is connected withthe first split screw sleeve (03) and a thread plug (04) is connected with the second split screw sleeve (06); when an air source enters the input end thread plug (04) from a test bench, airtight test on the system pipeline can be carried out; and when not working, the threaded plug cap (01) and the first split screw sleeve (03) are separated and the thread plug (04) and the second split screw sleeve (06) are separated.

Description

technical field [0001] The invention belongs to the technical field of aviation manufacturing, and relates to an airtight test method and device for fuel system pipelines. Background technique [0002] The oil supply system for the middle and outer wings belongs to the aircraft fuel system, and the tightness of the connection between the pipeline parts is very important. For pipelines designed with threaded or flanged connections, it is better to implement the airtight test of the pipelines by installing gaskets and blocking plates and connecting them with flanges or using threaded plugs. But for the flaring pipe, because the wall thickness of the pipe is thin and the flaring boss is small, it is difficult to locate, so the airtight test is relatively difficult to achieve. For flared pipes, in the past, rubber hoses were mostly used on the outer casing of the pipes, and the outer surface was fixed with clamps. The degree of bonding between the rubber hose and the pipes is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 陈卫红韩金辰李峰苏智韩波王波胡朝阳陈权仁李亚兰王大群
Owner SHAANXI AIRCRAFT CORPORATION
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