Liquid nitrogen cooling cryogenic device and implementation method for same

A low-temperature device and liquid nitrogen technology, which is applied in household refrigeration devices, cooling fluid circulation devices, applications, etc., can solve the problems of difficult constant temperature control and high cost of ordinary liquid nitrogen refrigeration equipment, achieve low operating costs, good effects, and avoid frostbite The effect of the accident

Active Publication Date: 2015-06-03
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0005] The purpose of the present invention is to provide a cryogenic device using liquid nitrogen refrigeration and its implementation method, which mainly solves the

Method used

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  • Liquid nitrogen cooling cryogenic device and implementation method for same
  • Liquid nitrogen cooling cryogenic device and implementation method for same

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[0035] Example

[0036] like figure 1 As shown, the present invention is mainly applied in low-temperature refrigeration, which includes a self-pressurized liquid nitrogen tank 1, a special low-temperature solenoid valve 2 for liquid nitrogen, a cryogenic container, a sample container 8, and a first temperature measuring probe 6 and a second temperature measuring probe. 7 temperature control alarm 5. The self-pressurized liquid nitrogen tank 1 is connected to the low-temperature container through a liquid nitrogen pipeline, and is used to output liquid nitrogen to the low-temperature container. The liquid nitrogen pipeline in this embodiment is a stainless steel bellows, and the outer wall is wrapped with an insulating layer (this embodiment Aluminum silicate fiberboard is preferably used as the insulation layer). The low-temperature electromagnetic valve 2 dedicated for liquid nitrogen is arranged in the liquid nitrogen pipeline, and the low-temperature electromagnetic valv...

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Abstract

The invention discloses a liquid nitrogen cooling cryogenic device and an implementation method for the same. The cryogenic device comprises a self-pressurization liquid nitrogen tank, a cryogenic container, a liquid nitrogen dedicated cryogenic electromagnetic valve, a temperature control alarm and a sample container, wherein the cryogenic container is connected with a liquid outlet of the self-pressurization liquid nitrogen tank through a liquid nitrogen pipeline; the liquid nitrogen dedicated cryogenic electromagnetic valve is arranged in the liquid nitrogen pipeline; the temperature control alarm is connected with the liquid nitrogen dedicated cryogenic electromagnetic valve, and is provided with a first temperature measurement probe and a second temperature measurement probe; the sample container is arranged in the cryogenic container; both the first and second temperature measurement probes are positioned in the cryogenic container; the second temperature measurement probe is lower than the first temperature measurement probe; an organic matter medium filling pipe and an organic matter medium discharging pipe are further arranged on the cryogenic container respectively. The cryogenic device is simple in structure, low in cost and convenient to control, and has good cryogenic cooling and cryogenic constant temperature control effects, so that the requirements of a miniature cryogenic device in a laboratory can be met, and the requirements of larger-sized engineering operation can further be met.

Description

technical field [0001] The invention relates to a low-temperature device, which belongs to the technical field of low-temperature refrigeration, and in particular relates to a low-temperature device using liquid nitrogen for refrigeration and a realization method thereof. Background technique [0002] Low temperature is widely used in the research of petrochemical industry, electronic instrumentation, bioengineering, medicine and health, life science, light industry food, physical property test and chemical analysis, such as: ① Petroleum, material, biology, medicine, food industry application to provide constant temperature Experiment field source; ②Cryogenic cooling and temperature control of the heating part of industrial mechanical devices; ③Constant temperature and low temperature stirring reaction bath experiment in glass reactor; ④Cryogenic cooling of electron microscope, molecular pump, ion pump, diffusion pump, microwave treatment machine and temperature control;...

Claims

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Application Information

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IPC IPC(8): F25D3/10
CPCF25D3/10F25D29/005F25D2700/00
Inventor 姚勇杨勇彬邓良才罗德礼宋江锋张志熊仁金蒙大桥高博
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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