Aeroplane oil box leakage source checking device

Abstract

The invention belongs to leak detection equipment of airplane tank. The main characteristics of technique are that: the oil pipe passes through the negative pressure cover and the edges of oil pipe are mounted on the sealed cover, the sealed cover seals the leak detection box along the axial direction, the outer edges of the sealed cover fix the pressure regulation annular plate in the negative pressure cover along the supporting pole direction, the oil pipe connects with the oil cylinder. The invention can detect the inner missing dots according to the outer missing dots quickly and efficiently (the reverse is true), it has advantages of simplicity, intuitionistic, high efficiency and nicety, and the liquid pressure can be adjusted according to the requirement.

Description

technical field [0001] The invention belongs to a leakage detection device, in particular to a leakage point detection device for aircraft oil tank leakage. Background technique [0002] Due to the complex structure of aircraft fuel tanks, different leak detection methods are applied depending on the area where the leakage occurs, the environment and the working conditions of the site. At present, there are many kinds of leak detection methods at home and abroad, and the commonly used methods are generally as follows: visual method, talcum powder method, backflush method, pressurization method, vacuum method, hollow rivet method, leakage path closure method, helium Various methods, such as gas method, have their own defects—either the effect is not obvious, or the leak detection equipment is too expensive, inconvenient to use and adjust, or it may damage the structure of the fuel tank itself. For example: the blowback method requires good cooperation and patience from the b...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of leak detection methods at home and abroad, and the commonly used methods are generally as follows: visual method, talcum powder method, backflush method, pressurization method, vacuum method, hollow rivet method, leakage path closure method, helium Gas method, etc., each method has its own defects-either the effect is not obvious, or the leak detection equipment is too expensive, inconvenient to use and adjust, or it is harmful to the structure of the fuel tank itself

For example: the blowback method requires good cooperation and patience from the blower and the searcher, but the influence of human factors is relatively large, and if the leakage path is too long, it is not easy to blow soap bubbles or the blown bubbles are not obvious, easy Causes missed detection; the vacuum method requires expensive equipment support, and the high negative pressure will damage the structural seal of the fuel tank, and the phenomenon of more and more pumping and leakage may occur, which will affect the repair efficiency; the application of the leakage path throttling method The scope is only limited to the leakage fault inspection at the skin seam; the helium detection method is difficult to detect the exact position of the internal leakage point due to the high sensitivity of helium leak detection and the rapid diffusion of helium gas into the fuel tank

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