A liquid rocket engine test pipeline cleaning device
A technology for testing pipelines and liquid rockets, which can be used in cleaning hollow objects, cleaning methods and utensils, chemical instruments and methods, etc.
Active Publication Date: 2016-06-22
BEIJING INST OF AEROSPACE TESTING TECH
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Problems solved by technology
The common alcohol cleaning method is to add 90% alcohol into the pressure vessel to repeatedly rinse the pipeline, microscopically check, rinse, and re-check until it is qualified. It takes 20 to 30 days, which is time-consuming and labor-intensive, and wastes alcohol.
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0021] The system composition of the present invention is as figure 1 As shown, it includes inlet pressure gauge at A-end (1), squeeze valve at A-end (2), release valve at A-end (3), tank pressure gauge at A-side (4), tank at A-side (5), A-side End filter (6), A-end liquid valve (7), A-end return valve (8), A-end return filter (9), A-end injection valve (10), A-end injection mixer ( 11), pipeline to be washed (12), liquid return valve at end B (13), 14. liquid return filter at end B (14), 15. vent valve at end B (15), tank pressure gauge at end B (16 ), B-end filter (17), B-end liquid valve (18), B-end storage tank (19), B-end extrusion valve (20), B-end injection mixer (21), B-end injection valve (22), B-end inlet pressure gauge (23), mixer housing (111), air guide pipe (112), Laval nozzle (113). Among them, the A-end pipeline system and the B-end pipelin...
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The invention discloses a liquid rocket engine testing pipeline cleaning device. The liquid rocket engine testing pipeline cleaning device is composed of an A end pipeline system and a B end pipeline system and comprises an inlet pressure gauge, a squeezing valve, an air bleed valve, a box storage pressure gauge, a filter, a liquid valve, a liquid return valve, an injecting valve, an injecting mixer and the like, wherein the injecting mixer is composed of a mixer shell, an air guide pipe and a Laval nozzle. Both the A end pipeline system and the B end pipeline system have the functions of alcohol squeezing, liquid outlet, air-liquid mixing injection, liquid returning and air bleeding. Alcohol is injected through compressed air, a high-speed air-liquid mixture can vibrate in a pipeline, and cleaning a welded pipeline is achieved. The A end pipeline system and the B end pipeline system are symmetrically designed, and therefore the alcohol can be conveniently recovered. The liquid rocket engine testing pipeline cleaning device conducts rapid cleaning on a liquid rocket engine testing pipeline through the compressed air and the alcohol, and recovers the alcohol.
Description
technical field [0001] The invention relates to a pipeline cleaning system for a rocket engine test, in particular to a pipeline cleaning system for a spacecraft attitude and orbit control engine test, and belongs to the technical field of pipeline cleaning systems. Background technique [0002] The spacecraft attitude and orbit control engine is a small-thrust liquid rocket engine. The flow diameter of the injection unit is usually small. The cleanliness of the test pipeline is very high during the test, and it is usually stipulated that no particles larger than 10 μm (0.01mm) should be contained. After the test pipeline is welded, if there is welding slag in the pipeline, it needs to be pickled, passivate the pipeline through pickling, and at the same time make the welding slag on the weld seam fall off, then wash off the acid in the pipeline with water, and then pass it through alcohol Wash away the remaining welding slag. The common alcohol cleaning method is to add 90%...
Claims
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IPC IPC(8): B08B9/032
Inventor 张平温志华高东卫徐鑫孙树江刘万龙刘奎芹刘建昌蒋辉刘宝成王晓雨王杰李洋尚飞邵帅徐勇陈炽聪
Owner BEIJING INST OF AEROSPACE TESTING TECH