Visual experimental system for liquid phase pipeline of low-temperature container differential pressure type liquid level meter

Abstract

The invention discloses a visual experiment system for a liquid phase pipeline of a low-temperature container differential pressure type liquid level meter. The system comprises a transparent outer cover, an inner tank, a bottom plate, an overpressure discharge pipeline, a pressure pipeline, a full-measuring pipeline, a filling pipeline and more than one liquid phase pipeline of the liquid level meter, a liquid phase heating device used for heating the liquid phase pipeline of the liquid level meter and a vacuum unit; the inner tank is arranged above the bottom plate at intervals; the transparent outer cover covers the outer side of the inner tank 2, and a vacuum chamber is formed in the space between the transparent outer cover and the bottom plate; the vacuum chamber is communicated withthe vacuum unit; the overpressure discharge pipeline, the pressure pipeline, the full-measuring pipeline, the filling pipeline and the liquid phase pipeline of the liquid level meter are sequentiallycommunicated from top to bottom and are arranged in the inner tank; and a transparent pipeline section is arranged on one side, close to the inner tank, of the liquid phase pipeline of the liquid level meter. According to the visual experiment system, the gas-liquid interface of the transparent pipe section arranged close to the inner tank is checked through the transparent outer cover, so that the design and optimization of the liquid-phase pipeline of the liquid level meter are realized.

Description

technical field [0001] The invention relates to the technical field of low-temperature liquid level measurement, in particular to a liquid phase pipeline visualization experiment system of a differential pressure liquid level gauge for a low-temperature container. Background technique [0002] Because of the heat insulation design and sealing requirements of cryogenic storage devices, the liquid level measurement of cryogenic liquids has its own special difficulties compared with the liquid level measurement of normal temperature liquids. For example, the traditional float type and glass plate level gauges have problems such as large heat transfer, difficult assembly and disassembly, frosting, low temperature embrittlement, and static electricity accumulation. At present, all kinds of new liquid level measuring instruments, such as capacitive, optical fiber, radiation and thermal liquid level measuring instruments, are mostly still in the laboratory stage. Therefore, most o...

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Problems solved by technology

Due to the particularity of the cryogenic liquid storage device, the liquid phase tube of the liquid level gauge located in the vacuum interlayer cannot be directly observed and modified after manufacture, and it is often unknown whether the piping design results can meet the design requirements

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