Pressure air supply system

Abstract

The invention discloses a pressure air supply system. The pressure air supply system comprises a remote monitoring module, two air compressors, three air storage tanks, three air aftertreatment modules, a compressed air oil content detector, a nitrogen making machine, an oxygen concentration detector, an air pressurizing module, an nitrogen pressurizing module, a nitrogen storage tank group and an environment oxygen concentration monitor, wherein the environment air is compressed so as to be taken as an compressed air supply, the nitrogen in the environment air is separated by virtue of the nitrogen making machine so as to be taken as a nitrogen source, and the nitrogen source is pressurized to 30 MPa by use of the nitrogen pressurizing module and stored in the nitrogen storage tank group so as to be taken as a high-pressure nitrogen source for inflation, the high-flow continuous compressed air and the high-capacity high-pressure nitrogen for inflation can be simultaneously provided, and a first air compressor and a second air compressor which are used for providing basal pressure air sources in the system are backup for each other, so that the robustness of the system is improved; the system can chronically and steadily operate and meet the demand of continuous test, the redundancy safe design is adopted, the dangerous factors in the system are eliminated to the greatest extent, and the safety of the staff and equipment is ensured.

Description

technical field [0001] The invention relates to a pressure air source system, in particular to a pressure air source system capable of simultaneously providing large-flow continuous compressed air and large-capacity high-pressure nitrogen for inflation, and belongs to the field of air flotation gravity unloading simulation tests. Background technique [0002] In order to simulate the weightlessness and frictionless state of the spacecraft in space on the ground, air flotation equipment is used to simulate the dynamics of the spacecraft in the ground simulation test. The full physical simulation of track close-range rendezvous and docking uses two six-degree-of-freedom air bearing platforms to simulate the relative motion dynamics of ultra-close rendezvous and docking with 6 degrees of freedom; The secondary platform provides it with a horizontal motion plane with an inclination of less than 2 arc seconds. The secondary platform is air-floated on the large granite platform an...

AI Technical Summary

Problems solved by technology

[0003] The existing air source system used for spacecraft air flotation test, the 1-2MPa continuous compressed air source is obtained by compressing the ambient air with an air compressor; the high-pressure inflation air source uses a 14MPa general nitrogen cylinder (volume 40 liters) through a booster device Pressurize it to 30MPa and store it in the gas storage cylinder group. For the rendezvous and docking test, do an air flotation test in the morning and afternoon, each test takes 30 minutes, and you need to use 100 bottles of nitrogen a day. The workload of replacing the gas cylinder is very large, and the gas cylinder occupies the storage space. The space is large, and because a large amount of common nitrogen gas must be purchased continuously, it is difficult to ensure a stable supply of nitrogen source, which affects the long-term stable operation of the system

In petrochemical and other industries, there are examples of multi-stage pressurization of ambient air to 30MPa and higher pressure as a high-pressure gas source, but oil, water, and oxygen under high pressure will react with the carbon steel of the high-pressure gas storage cylinder (tank) to produce Stress chemical corrosion, there is a risk of the gas storage tank bursting under pressure and a very serious safety accident

The existing gas source system requires operators to operate and inspect the gas source room. There are high-pressure gas storage cylinders (tanks) groups, pressure vessels, pressure pipelines, air compressors and other dangerous sources in the gas source room. cause serious casualties

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