Low-temperature internal pressure test assessment method for low-temperature storage tanks in the state of non-insulated structure

A low-temperature storage tank and internal pressure test technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of long storage tank repair welding and repair period, storage tank thermal insulation structure damage, and difficult state inspection. Achieve the effect of optimizing design and optimization, increasing environmental coverage, improving operability and standardization

Active Publication Date: 2016-08-24
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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Problems solved by technology

However, in general, in order to suppress the evaporation of the propellant, the outer surface of the low-temperature storage tank is designed with a thermal insulation structure, and the existence of the thermal insulation structure makes it difficult to check the condition of the low-temperature storage tank when carrying out low-temperature hydraulic tests, and the repair period of the storage tank is long. The operation is complicated, and the test causes damage to the insulation structure of the tank, etc.

Method used

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  • Low-temperature internal pressure test assessment method for low-temperature storage tanks in the state of non-insulated structure

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0034] The low-temperature internal pressure test assessment of the low-temperature storage tank without the insulation structure means that after the production of the metal box of the low-temperature storage tank is completed, the low-temperature internal pressure test is directly carried out without the construction of the thermal insulation structure. The low-temperature storage tank refers to the loading liquid For oxygen or liquid hydrogen propellant tanks, the test implementation method is as follows:

[0035] Step (1), build the test system, the specific method is as follows:

[0036] (1), such as figure 1 Shown is a schematic structural diagram of the test system built in the low-temperature internal pressure test of the present invention. The low-temperature storage tank 1 to be assessed is placed upright, the lower end surface of the...

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Abstract

The invention relates to a low-temperature internal pressure test assessment method of a low-temperature storage tank without an adiabatic structure. First, a test system is built to conduct a low-temperature internal pressure test of a low-temperature storage tank, and then the test results are quantitatively judged. The assessment method overcomes the conventional The limitations of the method for the test and assessment of the low-temperature storage tank can cover the actual working conditions of the storage tank in terms of internal pressure load and ambient temperature. Compared with the normal temperature hydraulic test, the environmental coverage is effectively increased, and the test process can be avoided. For the damage of thermal insulation structure, the problem of quantitative evaluation of test results is solved.

Description

technical field [0001] The invention relates to a storage tank for a low-temperature liquid propellant carrier rocket, in particular to a low-temperature internal pressure test assessment method for a low-temperature storage tank in a state of no heat-insulating structure. Background technique [0002] The storage tank of a liquid launch vehicle is a large aluminum alloy structure that stores and transports propellant for the rocket power system. It must be verified by hydraulic tests before leaving the factory that its internal pressure can meet the needs of rocket flight. For rockets using normal temperature liquid propellants, the normal temperature internal pressure test with water or other normal temperature liquids as the medium is generally carried out before the storage tank leaves the factory. With the advancement of rocket development technology and the need for environmental protection, clean and efficient low-temperature liquid hydrogen and liquid oxygen propella...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
Inventor 鄢东洋马云龙潘桢朱文俐吴会强郑卫东刘希敏
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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