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Controllable temperature deep cooling processing system based on self supercharging cryogenic fluids conveying technology

A technology of cryogenic treatment and low-temperature fluid, which is applied in household refrigeration equipment, lighting and heating equipment, household appliances, etc., and can solve problems such as slow cooling rate, fast cooling rate, and large thermal shock of liquid method

Inactive Publication Date: 2008-07-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The liquid method has a large thermal shock and a fast cooling rate, which is easy to cause some brittle parts to break, while the gas method has a small thermal shock and a relatively slow cooling rate

Method used

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  • Controllable temperature deep cooling processing system based on self supercharging cryogenic fluids conveying technology

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Embodiment Construction

[0011] As shown in Figure 1, the temperature-controllable cryogenic treatment system of the self-pressurized low-temperature fluid delivery technology includes a liquid nitrogen storage tank 1, an infusion pipe 2, a liquid injection pipe 3, a vaporizer 4, a self-pressurization circuit 5, a gas delivery pipe 6, an automatic Boost regulating valve 7, liquid injection valve 8, safety valve 9, manual pressure relief valve 10, infusion valve 11, gas delivery valve 12, pressure sensor P113, tee pipe 14, pressure sensor P2 15, data acquisition instrument 16, computer 17. Cryogenic treatment chamber top cover 18, liquid level gauge 19, exhaust pipe 20, thermometer 21, cryogenic treatment chamber box 22, workpiece to be processed 23, shelf 24, support structure 25, moving wheel 26, porous baffle 27. Cooling medium delivery pipe 28, cryogenic treatment chamber 29; the box body 22 of the cryogenic treatment room has a double-layer structure of inner and outer walls, the inner and outer wa...

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Abstract

The invention discloses a temperature controllable subzero cooling system based on self-pressure cryogenic fluid delivery technique. The system comprises a liquid nitrogen storage tank, a liquid delivery pipe, a liquid injection pipe, a vaporizer, a self-pressure loop, an air delivery pipe, a self-pressure adjusting valve, a liquid injection valve, a safety valve, a manual pressure relief valve, a liquid delivery valve, an air delivery valve, a pressure sensor P1, a three-way pipe, a pressure sensor P2, a data collector, a computer, a subzero cooling treatment chamber top cover, a liquid level meter, an exhaust pipe, a thermometer, a subzero cooling treatment chamber cabinet, a workpiece to be treated, a rack, a supporting structure, a travelling wheel, a perforated baffle, a cooling medium delivery pipe and a subzero cooling treatment chamber. The invention has the advantages of self-pressure cryogenic cooling medium delivery, no need of extra driving source, liquid and air two subzero cooling processes, convenient temperature dropping rate and treatment temperature adjustment and uniform temperature field in the subzero cooling treatment chamber.

Description

technical field [0001] The invention relates to a temperature-controllable cryogenic treatment system based on self-pressurized low-temperature fluid delivery technology. Background technique [0002] Cryogenic treatment, also known as ultra-low temperature treatment, usually refers to a method of treating materials below -130°C, which is an extension of conventional heat treatment. Cryogenic treatment can improve the mechanical properties of some ferrous metals, non-ferrous metals, metal alloys, carbides, plastics (including nylon, Teflon), silicates and other materials (increase strength and wear resistance, etc.), prolong service life, Stable size, etc., and has the advantages of easy operation, not easy to damage the workpiece, no pollution and low cost, and has considerable economic benefits and market prospects. At present, cryogenic treatment is widely used in industrial production, aerospace industry, military engineering and other fields, mainly for processing tool...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D3/10
Inventor 汤珂洪剑平金滔许斌郑浩
Owner ZHEJIANG UNIV
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