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Dual vacuuming device and method for civil aircraft composite repair

A vacuum device and composite material technology, which is applied in the field of double vacuum devices, can solve the problems of inconvenient maintenance, easy air leakage, and long time consumption, and achieve the effects of uniform heating, improved reliability, and improved vacuum effect

Active Publication Date: 2017-05-03
GUANGZHOU AIRCRAFT MAINTENANCE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of DVD device takes a long time to use, is easily damaged, and is prone to air leakage, which is extremely inconvenient for maintenance

Method used

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  • Dual vacuuming device and method for civil aircraft composite repair
  • Dual vacuuming device and method for civil aircraft composite repair
  • Dual vacuuming device and method for civil aircraft composite repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 and figure 2 As shown, the double vacuuming device of Embodiment 1 of the present invention can implement a double vacuuming process to the repair patch 8 used for repairing aircraft composite materials, which includes a working platform 1, three layers of air-permeable yarn, an electric blanket 3, and a metal pressing plate 4 , non-porous separation membrane 5, two layers of porous separation membrane, vacuum sealing membrane 11, decompression cover 12, heating control equipment 14 and two vacuum pumps.

[0039] The first air-permeable yarn 2, the electric blanket 3, the metal pressure plate 4, the non-porous separation membrane 5, the second air-permeable yarn 6, the first porous separation membrane 7, the repair patch 8, the second porous separation membrane 9 and the third The air-permeable yarn 10 is laid on the working platform 1 sequentially from bottom to top and forms a raised stack on the working platform 1, wherein the edge of the first air...

Embodiment 2

[0054] Such as image 3 and Figure 4 As shown, the double vacuuming device of the second embodiment of the present invention is basically the same as the first embodiment, and their difference is that in the second embodiment, the decompression cover 12 adopts the following preferred structure: the cover body 121 is made of aluminum alloy material, It includes front wall 1211, rear wall 1212, left wall 1213, right wall 1214 and upper wall 1215; front wall 1211, rear wall 1212, left wall 1213, right wall 1214 and upper wall 1215 is connected to form a box with an open bottom, and the inner cavity of the box is the bottom cavity 121 a of the cover body 121 . Among them, L-shaped angle aluminum 1216 is connected to the inner surface of any two connected parts of the front wall plate 1211, rear wall plate 1212, left wall plate 1213, right wall plate 1214 and upper wall plate 1215, and the outer surface of the upper wall plate 1215 is Two or more T-shaped aluminum strips 1217 ar...

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Abstract

The invention discloses a double-vacuumizing device and method for repairing civil aircraft composite materials. The device comprises first breathable gauze, an electric blanket, a metal pressing plate, a non-hole separation film, second breathable gauze, a first porous separation film, a repairing patch, a second porous separation film and third breathable gauze, wherein all the components are flatly laid on a working platform in sequence from bottom to top so as to form a stacked pile protruding from the working platform. The heating control output end of heating control equipment is electrically connected with the electric blanket. A film body of a vacuum sealing film completely covers the stacked pile and is connected with the working platform in a sealed mode, so that the vacuum sealing film and the working platform define a first sealed cavity. The bottom of a pressure reducing hood is located on the film body of the vacuum sealing film and accommodates the stacked pile in a bottom cavity, and the bottom of the pressure reducing hood is connected with the film body of the vacuum sealing film in a sealed mode, so that the pressure reducing hood and the vacuum sealing film define a second sealed cavity. The double-vacuumizing device and method have the advantages of being simple in structure, high in reliability, not prone to air leakage and capable of simply and conveniently repairing the civil aircraft composite materials.

Description

technical field [0001] The invention relates to a double vacuuming device and method for civil aircraft composite material repair. Background technique [0002] With the development of science and technology, the application technology of composite materials has been continuously improved, and more and more advanced composite materials have been applied to aircraft. B787 is currently the world's most advanced civil airliner manufactured by Boeing. In order to reduce weight, save maintenance costs and prolong service life, it subverts the traditional concept in design, such as fuselage skin, aircraft wing, stabilizer, etc. A large number of composite materials are used in aircraft structural parts. Composite materials account for 60% of the total aircraft, and the volume ratio even exceeds 80%. [0003] Due to the application of advanced composite materials, the maintenance and repair of aircraft will also bring about major changes. The aircraft structural parts made of adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/10B29C73/12
Inventor 马金戈冯光明刘爱平邝卓军吴任俊柯志满龙敏豪林仁伟林永飞赖勇
Owner GUANGZHOU AIRCRAFT MAINTENANCE ENG
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