Built-in vacuum repressure diffuser
A technology of diffusers and vacuum chambers, applied in instruments, measuring devices, aerodynamic tests, etc., can solve the problems of increased cost, difficult control, and occupation of the inner space of vacuum chambers, and achieve the effect of improving reliability
Inactive Publication Date: 2017-06-09
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology
Among them, the first type is difficult to control, and the influence of operation errors cannot be avoided; the second type needs to occupy the inner space of the vacuum chamber, resulting in an increase in the size of the vacuum chamber, an increase in cost, and a certain amount of turbulent flow
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[0023] The following introduces the specific implementation mode as the content of the present invention, and the content of the present invention will be further clarified through the specific implementation mode below. Of course, the following specific embodiments are described only to illustrate different aspects of the present invention, and should not be construed as limiting the scope of the present invention.
[0024] Fig. 1 is a schematic structural view of a built-in vacuum re-pressure diffuser of the present invention, which includes: a plurality of truncated cones (cone truncated) guide rings (guidance cylinders) 1, guide Flow pipe 2, mounting flange 3, re-pressure inlet pipe 4, re-pressure valve interface flange 5, guide ring fixing rib 6, multiple guide rings 1 are arranged concentrically side by side and have a common front face and rear end face and mutual Parallel conical side walls, the conical diameter gradually decreases from the front end to the rear end fa...
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The invention discloses a built-in vacuum re-pressing air diffuser. The built-in vacuum re-pressing air diffuser comprises a plurality of chamfered cone flow guide rings, a flow guide pipe, a mounting flange, a re-pressing air inlet pipe, a re-pressing valve port flange and a flow guide ring fixing ribs. The flow guide rings are arranged side by side concentrically and are provided with a common front end face and rear end face and parallel conical side walls. The diameter of each cone becomes smaller and smaller from the front end face to the rear end face, and concentric circle projections are formed on the front end face. The flow guide rings are welded and positioned together through the flow guide ring fixing ribs arranged on the circumferences of the concentric circles in the radial direction. The outermost flow guide ring is continuously welded and fixed to one end of the flow guide pipe on the rear end face, the other end of the flow guide pipe is continuously welded and fixed to one end of the mounting flange, the other end of the mounting flange and the re-pressing air inlet pipe are continuously welded, the re-pressing air inlet pipe and the re-pressing valve port flange are continuously welded, and the vacuum sealing performance of weld joints is guaranteed.
Description
technical field [0001] The invention belongs to the field of vacuum, and in particular relates to a test piece and tank internal structure that eliminates the impact of high-speed direct airflow on the inside of a vacuum chamber, while not affecting the repressurization rate and occupying the inner space of the vacuum chamber. It is suitable for space environment simulation equipment and other various The key device of similar vacuum equipment. Background technique [0002] At present, after the test of vacuum equipment is completed, it is generally necessary to restore the interior of the vacuum chamber to atmospheric pressure, and open the door to take out the test piece after the pressure is balanced. Through the observation of the repressurization process of a large number of equipment, it is found that after the repressurization valve is opened, the airflow directly enters the vacuum chamber at high speed, which will produce a strong impact on the test piece and the equ...
Claims
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IPC IPC(8): G01M9/06
Inventor 李强王军伟龚洁杨瑞洪董雷谷成方嬿
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG