Low temperature test device for sealing cover nut
A low-temperature test and cover screw technology, which is applied in the field of mechanical parts testing, can solve the problems that the testing equipment for the tightness of nut connections has not yet appeared on the market, and achieve the effect of unlimited installation position, simple principle, and good sealing performance of the device
Active Publication Date: 2015-12-23
AEROSPACE PRECISION PROD INC LTD
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Problems solved by technology
However, the detection equipment for the tightness of the nut connection has not yet appeared on the market.
Method used
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[0019] like figure 1 , figure 2 As shown, the present invention provides a low-temperature test device for sealing cover nuts, including an argon gas bottle 1, an oil cylinder 2, a low-temperature box 6, a test tooling 11, a pressure gauge 8 and an air release valve 9, an argon gas bottle 1, an oil cylinder 2, Both the pressure gauge 8 and the air release valve 9 are placed outside the low temperature box 6, and the test tooling 11 is placed inside the low temperature box 6.
[0020] The test tooling includes a cover plate 10 and a box body with a cavity 12. The side of the box body has an oil inlet 13 and an air outlet 14 communicating with the cavity 12. The cover plate 10 has several holes for fixing the sealed cover to be tested. The through hole of the nut 5, the cover plate 10 and the cavity 12 are hermetically connected.
[0021] The argon cylinder 1 is connected with the oil cylinder 2, and the argon gas is transported into the oil cylinder 2. The oil cylinder 2 is ...
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The invention provides a low temperature test device of seal cover nuts, comprising a pressurization unit, a low temperature box, a test tool, a pressure gage and a deflation valve, wherein the test tool comprises a plurality of through holes and a cavity; the through holes are used for fixing the seal cover nuts to be tested and are matched with the seal cover nuts to be tested; the cavity is communicated with the through holes; the test tool is arranged in the low temperature box; the pressurization unit is arranged outside the low temperature box and is connected with the cavity on the test tool through a pipeline to pressurize the cavity; the pressure gage and the deflation valve are arranged outside the low temperature box; the pressure gage is communicated with the cavity through the pipeline to detect the pressure values at the connecting parts of the cavity and the through holes; the deflation valve is communicated with the cavity through a deflation pipe; and the position of the deflation valve is higher than that of the cavity. The low temperature test device has the beneficial effect that the device capable of detecting the tightness of the seal cover nuts under low temperature is provided, and the device has the advantages that the theory is simple, the device tightness is good, the mounting position is not limited and the like.
Description
technical field [0001] The invention belongs to the field of detection of mechanical parts, and in particular relates to a low-temperature test device for sealing cover nuts. Background technique [0002] Nuts are common mechanical connections, and the nuts used in the aerospace field have high requirements on the sealing performance after connecting workpieces. And for the detection equipment of nut connection tightness not yet available on the market. Contents of the invention [0003] The problem to be solved by the invention is to provide a low temperature test device for the sealing cover nut. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a low-temperature test device for sealing cover nuts, characterized in that it includes a pressurization unit, a low-temperature box, a test tool, a pressure gauge and an air release valve, and the test tool It includes several through holes for fixing...
Claims
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IPC IPC(8): G01M3/20
Inventor 江康殷小健郑晓冬
Owner AEROSPACE PRECISION PROD INC LTD