Ultra-static vacuum testing device and method

A testing device and vacuum technology, which is applied in the testing of measuring devices, pump devices, machines/structural components, etc., can solve problems such as inability to test, inaccurate test results of spacecraft ground vacuum, etc., to isolate vibration effects and ensure accuracy Effect

Pending Publication Date: 2020-07-31
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the technical problem that the vibration and jitter of the vacuum test device lead to inaccurate or even impossible test results of the spacecraft ground vacuum test, the present invention provides an ultra-quiet vacuum test device and method

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with accompanying drawing.

[0042] Such as figure 1 , 2 As shown, the ultra-quiet vacuum testing device provided in this embodiment includes a first air bearing platform, a second air bearing platform, a vacuum testing unit, an object loading platform unit and a vacuum pumping unit.

[0043] The first air bearing platform comprises the first supporting plate 13 of annular structure and the first air cylinder 1-12 that is arranged on the lower end of the first supporting plate 13; 1-12 are divided into four groups, which are evenly distributed on the lower end of the first support plate 13; the three first cylinders of each group are evenly arranged along the edge of the first support plate 13 toward the middle; cylinders 1-12 and cylinders 14- 17 Driven by compressed air, its pressure is not less than 0.5MPa.

[0044] The second air bearing platform comprises a second support plate 18 and the secon...

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Abstract

The invention provides an ultra-static vacuum testing device and method in order to solve the technical problems that the spacecraft ground vacuum test result is inaccurate and even test cannot be performed due to vibration and jitter of a vacuum test device. According to the invention, a vacuum tank and a test vacuum tank are separated and are connected through a corrugated pipe, so that a dry pump, a molecular pump and a cryogenic pump are prevented from being directly connected to the test vacuum tank, and the vibration influence on the test vacuum tank in the operation process is avoided;through the support of an air cylinder of a first air floating platform, the test vacuum tank is enabled to be in an air floating state, and the vibration influence of the outside on the test vacuum tank is isolated; through the support of an air cylinder of a second air floating platform, an object carrying platform is enabled to be in an air floating state, so that a test product placed on the object carrying platform is in an air floating state, and the vibration influence of the outside on the test product is isolated.

Description

technical field [0001] The invention belongs to the technical field of spacecraft testing, and in particular relates to an ultra-static vacuum testing device and method. Background technique [0002] The vacuum thermal test is mainly used to simulate the environment in space on the ground before space launch, and to assess the ability of the spacecraft to work normally in the cold and dark space background and high and low temperature environment. There are certain limitations in simulating the space environment on the ground, mainly reflected in the fact that the spacecraft test under vacuum will be affected by the vibration and jitter of the artificial vacuum environment, and the aerospace imaging camera in the vacuum environment cannot detect the transmission due to the vibration and jitter of the vacuum equipment ( MTF), the aerospace exploration camera cannot measure the energy concentration due to the vibration and jitter of the vacuum equipment, and the aerospace fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G7/00F04B41/02F04B41/06F04B37/14G01M99/00
CPCB64G7/00B64G2007/005F04B37/14F04B41/02F04B41/06G01M99/00G01M99/002
Inventor 王亚军赛建刚高斌赵燕高博韩磊孟宁飞于攀龙贾琦张海民
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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