Hydraulic air pressure test device

Abstract

The invention provides a hydraulic air pressure test device comprising a hydraulic device, a rubber air bag, a hydraulic test container, a high pressure helium tank, and a helium detection device; structural components to be tested, the rubber air bag, and the hydraulic test container are all sealed containers; the head end and the tail end of the rubber air bag are provided with two openings respectively and the two openings are provided with one-way check valves respectively; the hydraulic test container is filled with water solution; the structural components to be tested are located inside the rubber air bag; the high pressure helium tank is communicated with one one-way check valve of the rubber air bag through a pipeline; a pipeline of the helium detection device passes through the other one-way check valve of the rubber air bag and is communicated with the inner of the structural components to be tested; the rubber air bag is located in the water solution in the hydraulic test container; a pipeline of the hydraulic device is located in the water solution of in the hydraulic test container. According to the invention, test pressure is transferred by the rubber air bag and a pneumatic test is converted to a hydraulic test; by use of a helium mass spectrum detection system, leak rate detection of gas micro-molecule under high pressure is realized.

Description

technical field [0001] The invention belongs to the technical field of airtightness inspection, and in particular relates to a water pressure air pressure test device. Background technique [0002] Domestic related communication equipment companies have developed a new type of communication product that works in the deep sea environment. After completing the external pressure bearing test, it is necessary to verify its ability to seal small gas molecules in seawater in the deep sea environment. The customer put forward a clear test requirement: the diameter of the inspected part is about Φ100mm, and the length is about 200mm. It is necessary to pass the air pressure test to verify the ability of the product to seal small gas molecules under high pressure. The air pressure test pressure is above 50MPa. Each test needs to be stable. Pressure for more than 12 hours, the specific test plan is: put the inspected part in high-pressure helium, vacuumize its interior, and keep it fo...

AI Technical Summary

Problems solved by technology

Adopting this method first needs to choose a specific place to excavate the underground cave, and purchase the corresponding air compressor, which will consume a lot of manpower and material costs, and will also take a long time, and the cost of a single test will decrease. obviously increase

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