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Device and method for detecting whole satellite leak rate of satellite

A detection device, detection method technology, applied in the direction of detecting the presence of fluid at the leak point, using liquid/vacuum for liquid tightness measurement, etc., can solve engine diffuser cooling pipe leakage, launch failure, political influence and economic Loss and other problems, to achieve the effect of shortening data processing time, shortening leak detection cycle, and simple method

Active Publication Date: 2012-10-10
SHANGHAI YUDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The US Challenger space shuttle exploded in 1986 due to the failure of the seal ring, causing great political impact and economic losses
In December 2002, ESA's launch failed due to a leak in the diffuser cooling tube of the Vulcan 2 engine.

Method used

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  • Device and method for detecting whole satellite leak rate of satellite
  • Device and method for detecting whole satellite leak rate of satellite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 and figure 2 As shown, the present embodiment includes a leak detection gas collection box 23, a calibration device 21, an inflation and deflation device 24, a circulation fan 25 and a helium mass spectrometer leak detector 26, and the satellite 22 is installed inside the leak detection gas collection box 23, wherein the detection The leakage gas collection box 23 is respectively connected with the calibration device 21 and the inflation and deflation device 24 through the manual fine-tuning vacuum valve 13, the helium mass spectrometer leak detector 26 is connected to the leak detection gas collection box 23, and the circulation fan 25 is installed on the leak detection gas collection box 23. Inside box 23.

[0044] In this embodiment, the calibration device 21 includes a helium cylinder 14, a standard container 12 and a pressure vacuum gauge 16. The helium cylinder 14 is connected to the standard container 12 through a manual fine-tuning vacuum valv...

Embodiment 2

[0047] Embodiment 2 is a detection method utilizing the satellite whole-satellite leakage rate detection device provided in Embodiment 1.

[0048] This embodiment includes the following steps:

[0049] Step 1, calibration: use the calibration device to obtain the calibration curve in the leak detection gas collection box;

[0050] The first step is to check the pressure in the satellite and whether it is filled with helium. If there is pressure, the pressure should be restored to an atmospheric pressure. If there is helium, replace it with 0.3MPa high-purity nitrogen for no less than three times.

[0051] The second step is to check the leak detection gas collection box and purge the satellite with high-purity nitrogen, and use the sniffing gun method to detect that the background concentration of helium in the box is not higher than the surrounding environment;

[0052] The third step is to put the satellite into the leak detection gas collection box and seal the leak detect...

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Abstract

The invention discloses a device and a method for detecting a whole satellite leak rate of a satellite. The device comprises a leak-detecting gas collection tank, a calibration device, a gas charging and discharging device, a circulating fan and a helium mass spectrometer leak detector, wherein the satellite is arranged inside the leak-detecting gas collection tank; the leak-detecting gas collection tank is respectively connected with the calibration device and the gas charging and discharging device through manual fine-tuning vacuum valves; the helium mass spectrometer leak detector is connected to the leak-detecting gas collection tank; and the circulating fan is arranged in the leak-detecting gas collection tank. The whole satellite leak rate of the satellite can be acquired through calibration, residual helium clearing, accumulating data acquisition and data processing. By the device and the method, the whole satellite leak rate of the satellite can be obtained, the requirement of satellite in-orbit operation reliability on the whole satellite leak rate is met, and the advantages of improving the reliability of detecting data, shortening the time for detecting the satellite leak rate, reducing test cost and the like are acquired.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of satellite whole star and its large components, in particular to a satellite whole star leakage rate detection device and detection method Background technique [0002] The sealing detection technology of spacecraft is related to the success of the spacecraft. Leakage is the enemy of spaceflight, and tiny leaks may also cause huge losses. According to incomplete statistics from 1957 to 2005, the number of launch failures of foreign spacecraft due to leakage accounted for more than 10% of the total number of failures. The US Challenger space shuttle exploded in 1986 due to the failure of the sealing ring, causing great political impact and economic losses. In December 2002, ESA failed to launch due to a leak in the diffuser cooling tube of the Vulcan 2 engine. Just because spacecraft leakage is a life-and-death issue related to the success or failure of spacecraft, all aerospace...

Claims

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Application Information

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IPC IPC(8): G01M3/20
Inventor 彭光东姜健景加荣谢勇军
Owner SHANGHAI YUDA IND
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