Hydraulic air pressure test device

A technology of air pressure test and water pressure test, applied in the field of tightness inspection, can solve the problems of increased test cost, long time, large manpower and material cost, etc.

Active Publication Date: 2016-06-15
XIAN AEROSPACE PROPULSION TECH INST
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  • Claims
  • Application Information

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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

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] The core of the present invention is to convert the air pressure test into a water pressure test through the rubber air bag. Since the rubber airbag can deform freely after being pressurized, the pressure inside and outside the airbag is always the same. By measuring the air pressure in the airbag in real time, it can ensure that the test achieves the same effect as the conventional air pressure test.

[0021] Such as figure 1 As shown, the hydraulic pressure test device of the present invention includes: a structural member to be inspected 1, a hydraulic device 2, a rubber air bag 3, a hydraulic test container 4, a high-pressure helium cylinder 5, and a helium detection device 6.

[0022] The structure to be inspected 1, the rubber airbag 3, and the water pressure test container 4 are all airtight containers; the rubber airbag 3 has two openings a...

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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...

Claims

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Application Information

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IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 杨乐朱涛张明涂四华
Owner XIAN AEROSPACE PROPULSION TECH INST
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