Mass method liquid hydrogen flow standard device driven by liquid hydrogen pump
A flow standard device, mass method technology, applied in the direction of testing/calibrating volume flow, etc., can solve the problem of lack of hydrogen energy equipment performance testing and testing methods, standards and infrastructure, etc., to improve safety and compatibility, improve measurement The effect of high accuracy and overall safety
Active Publication Date: 2022-02-25
浙江浙能富兴燃料有限公司 +2
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Problems solved by technology
However, less attention has been paid to the performance testing and flow measurement of hydrogen products at present, and there is a lack of mature hydrogen energy equipment performance testing and testing methods, standards and infrastructure
Method used
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[0055] Press the following parts to figure 1 Connected in the manner shown, the professional and technical personnel can successfully complete the implementation of the device of the present invention. The device of the present invention comprises a first low-temperature high-pressure helium gas source 1, a second low-temperature high-pressure helium gas source 2, a first precision decompression valve 3, a second precision decompression valve 4, a first adiabatic pre-cooling tank 5, a second adiabatic pre-cooling tank Cold tank 6, standard liquid hydrogen storage tank A 7, standard liquid hydrogen storage tank B 8, supply hydrogen storage tank 9, first thermometer 10-1, first pressure gauge 11-1, first liquid level gauge 701, first Helium diffuser 702, first liquid hydrogen diffuser 703, first vacuum jacket 704, first safety valve 12-1, proportional regulating valve 13, first stop valve 14-1, cryogenic liquid hydrogen pump 15, subcooling box 16. Vacuum cold box 17, tested flo...
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The invention discloses a mass method liquid hydrogen flow standard device driven by a liquid hydrogen pump. Outlets of the two sets of high-pressure driving gas sources are respectively connected with a heat insulation precooling tank; and outlets of the heat insulation precooling tanks are respectively connected with the standard liquid hydrogen storage tank A and the standard liquid hydrogen storage tank B. A liquid outlet of the standard liquid hydrogen storage tank A is connected with an inlet of the low-temperature liquid hydrogen pump set, an outlet of the low-temperature liquid hydrogen pump set is connected with an air pipe inlet of the supercooling box, an air pipe outlet of the supercooling box is connected with an inlet of the detected flowmeter, an outlet of the detected flowmeter is connected with a liquid inlet of the standard liquid hydrogen storage tank B, and the standard liquid hydrogen storage tank B is arranged on the high-precision weighing unit. And a liquid outlet of the supply hydrogen storage tank is respectively connected with liquid adding ports of the standard liquid hydrogen storage tank A and the standard liquid hydrogen storage tank B through a manifold. According to the invention, the generated standard flow is subjected to stepless regulation by matching the low-temperature liquid hydrogen pump group with the proportioning valve, the standard weight of the corresponding metering grade can be directly traced, the liquid hydrogen loss is very small, the liquid hydrogen stored in the hydrogen storage tank can be repeatedly used, and the safety is high.
Description
technical field [0001] The invention belongs to the technical field of hydrogen energy measurement, and relates to a mass-method liquid hydrogen flow standard device driven by a liquid hydrogen pump for real flow verification or calibration of a liquid hydrogen flow meter. Background technique [0002] Hydrogen energy is one of the cleanest energy sources. It has the advantages of diverse sources, zero terminal emissions, and wide range of uses. It plays a major role in ensuring national energy security and promoting the upgrading of the energy industry. In the process of achieving the goal of carbon peaking and carbon neutrality, hydrogen energy is expected to be high. At the same time, hydrogen energy can also be used as a bridge to carry renewable and unstable wind energy and solar energy, and contribute to the energy saving and efficiency enhancement of the whole society. Hydrogen energy can bring us a cleaner and better living environment. [0003] High-pressure gas hy...
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IPC IPC(8): G01F25/10
CPCY02E60/32
Inventor 汤敏华孙士恩宋玉彩许好好徐爱民李想吴舒琴李军海包福兵凃程旭王佳香
Owner 浙江浙能富兴燃料有限公司