Water injection replacement and pressure maintenance test method for hydrogen storage tank of nuclear power station

A test method, the technology of nuclear power plants, is applied in the direction of measuring the rate of increase and deceleration of the fluid, and using the liquid/vacuum degree to measure the liquid tightness, etc. It can solve the problems of a large amount of nitrogen, long debugging time, and inaccurate oxygen content analysis and testing. Achieve the effects of reducing safety risks, saving commissioning costs, and shortening the commissioning period

Inactive Publication Date: 2015-12-30
中广核工程有限公司 +1
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Problems solved by technology

[0004] It can be seen that the replacement of hydrogen storage tanks with nitrogen has at least the following problems: 1) During the test, the analysis and testing of the oxygen content in nitrogen is inaccurate, making it difficult to judge whether the replacement is complete; One-time pressurization is qualified, so on the one hand, a large amount of nitrogen is required, and on the other hand, the debugging time is very long; 3) There is a risk of suffocation if a large amount of nitrogen is used
The above problems have seriously affected the commissioning process of the hydrogen production and distribution system

Method used

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  • Water injection replacement and pressure maintenance test method for hydrogen storage tank of nuclear power station

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[0023] In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0024] see figure 1 , the nuclear power plant hydrogen storage tank water injection replacement and pressure maintaining test method of the present invention have the following steps:

[0025] 1) Fill the hydrogen storage tank 10 with SED water (that is, the desalted water used in the desalinated water distribution system of the nuclear island), and replace the air in it. The specific operations are: a, close the valves 674VY, 611VY, and 672VY; b, open the valves 605VK, 606VK, 671VY, 676VY, 677VY, 673VY; c, connect a temporary hose to the valve 60...

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Abstract

The invention provides a water injection replacement and pressure maintenance test method for a hydrogen storage tank of nuclear power station. The method comprises the following steps that 1) SED water is filled into the hydrogen storage tank to replace air in the tank; 2) nitrogen is used to carry out pressure maintenance test on the hydrogen storage tank; 3) hydrogen is used to replace in the SED water in the hydrogen storage tank, and blows to discharge pollution till the hydrogen is qualified; and 4) the pressure of hydrogen storage tank is increased for standby. Compared with the prior art, the method in the invention reduces the safety risk and the debugging cost, shortens the debugging period, and is highly safe, economical and practical.

Description

technical field [0001] The invention belongs to the field of debugging of hydrogen production and distribution systems in nuclear power plants. More specifically, the invention relates to a water injection replacement and pressure maintaining test method for hydrogen storage tanks in nuclear power plants. Background technique [0002] The hydrogen production and distribution system in a nuclear power plant needs to replace the hydrogen storage tank before hydrogen production to ensure that the oxygen content in the storage tank is lower than 5PPM, thereby ensuring the safety of hydrogen storage. [0003] The nuclear power projects that have been announced so far all use the nitrogen replacement method. However, since the molecular mass of nitrogen is 28, which is equivalent to the relative molecular mass of air, which is 29, it takes a lot of nitrogen and takes a long time to replace the storage tank to the required oxygen content; in addition, the system is not designed to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
Inventor 邵玉林文功谦涂晶丁成管增福韩巍戴希璋
Owner 中广核工程有限公司
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