Air tightness inspection method and device

Abstract

The invention discloses an air tightness inspection method and device, and belongs to the technical field of aviation, the device comprises a power supply, a vacuum pressure gauge, a vacuum pump, a one-way valve, a pressure regulating valve, vacuum cloth, an ultrasonic leak detector, a connecting hose, an operation table and a processor, one end of the vacuum pump is electrically connected with the power supply, and the other end of the vacuum pump is mechanically connected with one end of the one-way valve; one end of the pressure regulating valve is mechanically connected with the other end of the one-way valve, the pressure regulating valve is connected with the vacuum pressure gauge in parallel, the other end of the pressure regulating valve is mechanically connected with the vacuum cloth through the connecting hose, the vacuum cloth is arranged on the upper surface of a detected object, and the ultrasonic leak detector moves on the upper surface of the detected object to detect a gas leakage point; the operation table is electrically connected with the processor which is electrically connected with the vacuum pump, the vacuum pressure gauge and the pressure regulating valve. The device is convenient to use and is not limited by the size and the shape of a measured object; the equipment is provided with trundles, can be freely moved and used, and is not influenced by sites.

Description

technical field [0001] The application belongs to the field of aviation technology, and in particular relates to an airtightness inspection method and device. Background technique [0002] The riveting quality of the aircraft panel has an important influence on the safety performance of the aircraft, and the sealing quality of the panel is an important inspection factor of the riveting quality. [0003] At present, the existing wall panel seal detection is mainly detected by watertight test, specifically, the surface of the wall panel is intruded into water, the penetration pressure of water penetrates the riveting area, and the sealing quality is detected by visually observing the water seepage or testing the riveting area with a dry cloth. [0004] However, the detection method of the above-mentioned watertight test cannot be detected in the case of large wall panels, the edges of the wall panels, or many holes on the wall panels; question. Contents of the invention ...

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Problems solved by technology

[0005] In order to solve the problem that the detection method of watertight test in the prior art cannot be detected in the case of large-scale wallboards, wallboard edges or many holes in the wallboards; other wallboards that can be detected also have long detection time and cannot accurately identify air leakage For the problem of riveting area, this application provides an air tightness inspection method and device

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