Flow resistance and temperature distribution testing device for low-temperature fluid inside heat insulating corrugated pipes

Abstract

The invention relates to a flow resistance and temperature distribution testing device for low-temperature fluid inside heat insulating corrugated pipes. The low resistance and temperature distribution testing device for the low-temperature fluid inside the heat insulating corrugated pipes comprises a low-temperature self-pressurization storage tank, a two-stage supercooler, a corrugated pipe testing section, a vaporizer and a gas flowmeter which are connected through metal hoses. The corrugate pipe testing section is communicated with an inflating and exhaust pipe, which adjusts the internal vacuum degree of the corrugated pipe testing section; the inside of the corrugated pipe testing section is provided with a temperature and pressure measuring unit and a vacuum degree measuring unit, and the flow resistance and the temperature distribution of the low-temperature fluid inside the heat insulating corrugated pipe can be obtained according to the temperature, pressure and vacuum degree data inside the heat insulating corrugated pipes. Compared with the prior art, the flow resistance and temperature distribution testing device for the low-temperature fluid inside the heat insulating corrugated pipes is simple in structure, convenient to operate, safe, reliable and applicable to experiment measurement of the flowing and heat transfer characteristics of the low-temperature fluid inside the heat insulating corrugated pipes at different inclinations.

Description

Technical field [0001] The invention relates to a low-temperature fluid flow and heat transfer characteristic test device, in particular to a low-temperature fluid flow resistance and temperature distribution test device in an insulating corrugated pipe, belonging to the field of low-temperature engineering and low-temperature technology. Background technique [0002] The flow and heat transfer characteristics of cryogenic fluids are the basic properties that are widely concerned in the fields of energy development, chemical metallurgy, environmental protection, medical and health, transportation, and space technology. Newly developed products usually require relevant actual measurements. Especially in the process of superconducting cable power transmission, liquefied natural gas and liquid hydrogen fuel production, storage and transportation, it is widely involved in the measurement of flow characteristics of various fluid devices such as pipelines, valves, and reducing diameters...

AI Technical Summary

Problems solved by technology

However, this device is inconvenient to replace the tested samples of bellows with different specifications, the inclination angle cannot be changed, the temperature distribution along the bellows is not measured, and the performance measurement under the condition of changing and detecting heat leakage of different vacuum degrees is not available, etc.

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