Low-temperature injection pump platform

Abstract

The invention provides a low-temperature injection pump platform which comprises an air reservoir, an inlet flow meter, a heat-exchange coil, a liquid nitrogen groove, a cold box, an injection pump, aliquid nitrogen liquid bag, a vaporizer and an outlet flow meter; the air reservoir is connected with one end of the inlet flow meter through a pipeline; the other end of the inlet flow meter is connected with one end of the heat-exchange coil through a pipeline; the heat-exchange coil is soaked in the liquid nitrogen groove; the other end of the heat-exchange coil is connected with the working flow inlet end of the injection pump through a pipeline; the motive flow inlet end of the injection pump is connected with the lower end of the liquid nitrogen liquid bag through a pipeline; the mixedflow outlet end of the injection pump is connected with one end of the vaporizer through a pipeline; and the other end of the vaporizer is connected with the outlet flow meter through a pipeline. Withthe adoption of the low-temperature injection pump platform, performance tests and experiments on the low-temperature injection pump at different temperatures and pressure can be carried out, the low-temperature injection pumps of different models and sizes are tested conveniently, the test preparation cycle is short, the cost is low, and a long and stable test is realized.

Description

technical field [0001] The invention relates to cryogenic refrigeration, in particular to a cryogenic jet pump platform. Background technique [0002] With the continuous development of technology in the field of cryogenics, the demand for cryogenic equipment continues to increase in many fields including aerospace, nuclear energy research, medical equipment, and scientific engineering. In the process of creating a low-temperature environment, users' requirements for cooling capacity are also continuously increasing. In terms of existing fixed-type refrigerators, especially large-scale low-temperature refrigerators and liquefiers, the power provided by the cooling capacity is relatively fixed, and the adjustment range is relatively small, so there will be loss of cooling capacity when the cooling capacity is redundant during actual use. The situation and the situation that the cooling requirement cannot be achieved when the cooling capacity is insufficient, this situation g...

AI Technical Summary

Problems solved by technology

The design method of the phase-changing jet pump at room temperature and high temperature is not suitable for low temperature design. The main problems are: 1. The physical properties at low temperature and high temperature at room temperature are quite different. .The formation of shock wave after the nozzle at low temperature, etc.

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