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Visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquid

A cryogenic liquid, dissolution and separation technology, applied in the direction of measuring devices, analytical materials, thermal analysis of materials, etc., can solve the problems of visual observation of impurity crystal grain precipitation and accumulation growth characteristics, etc., to achieve convenient and reliable piping system design, Easy to test and reliable results

Active Publication Date: 2017-02-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned experimental device can only realize the measurement of the solubility of soluble impurities in low-temperature liquids, and cannot perform visual observation of the precipitation and accumulation growth characteristics of impurity grains.

Method used

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  • Visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquid
  • Visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquid
  • Visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The observation system includes an integrated glass test unit 1, a high-speed microscopic camera unit 2, a cryogenic solvent filling unit 3, a soluble impurity filling unit 4, a cooling medium temperature measurement and control unit 5, a vacuum unit 6, and a gasification discharge pipe Road unit 7 is used to study the characteristics of the dissolution of soluble impurities in various low-temperature liquids, the supercooled precipitation of impurity grains, and the accumulation and growth of impurity grains.

[0035] Such as figure 1 As shown, the integrated glass test unit 1 is installed on the aluminum profile plate 92 through two hoops 91 in the horizontal and vertical directions, and the high-speed camera 21 equipped with the microscope lens 22 is also installed on the aluminum profile plate 92 through the three-dimensional direction adjustable support. profile plate.

[0036] Such as figure 1 with figure 2 As shown, the outermost layer of the integrated glass...

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PUM

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Abstract

The invention discloses a visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquid. The device comprises an integral glass test unit, a high-speed microscope camera unit, a cryogenic solvent filling unit, a soluble impurity charging unit, a cooling medium temperature measurement and control unit, a vacummizing unit and a gasification and discharge pipeline unit. The integral glass test unit is almost completely covered with a vacuum insulation protection jacket, and the vacuum insulation protection jacket is communicated with the vacuumizing unit to be vacuumized to high vacuum and used for achieving good cryogenic insulation of the internal cryogenic liquid and achieving the purposes of not frosting, non condensing and not influencing visual observation. The gasification and discharge pipeline unit is located at the down stream of the integral glass test unit and used for achieving controlled flowing, gasification and temperature measurement of the cryogenic liquid. The device can be effectively used for studying the characteristics of the growth process of dissolution, impurity grain supercooling separation and impurity grain accumulation of the soluble impurities in various cryogenic liquid.

Description

technical field [0001] The invention relates to the field of cryogenic fluid engineering, in particular to a visual observation device for dissolution and separation of trace soluble impurities in cryogenic liquids. Background technique [0002] The solubility data and mechanism of soluble impurities in low-temperature solvents (liquid oxygen, liquid nitrogen) have great practical value in the implementation of low-temperature engineering, such as preventing the precipitation and accumulation of impurities in low-temperature pipelines in the supercooling process, thereby avoiding Pollution and blockage of heat exchangers and pipelines and possible explosion accidents. [0003] Cryogenic propellants composed of liquid hydrogen / liquid oxygen, liquid oxygen / kerosene or liquid oxygen / liquid methane are gradually replacing traditional propellants such as dinitrogen tetroxide / unsymmetrical dimethylhydrazine as the fuel for a new generation of large-load environmentally friendly ro...

Claims

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Application Information

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IPC IPC(8): G01N25/14
CPCG01N25/147
Inventor 黄永华周绍华陈忠灿
Owner SHANGHAI JIAO TONG UNIV
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