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Low-temperature wind tunnel nitrogen recovery device, and recovery method

A nitrogen recovery and low temperature technology, applied in chemical instruments and methods, nitrogen compounds, nitrogen purification/separation, etc., can solve the problem of inability to realize low temperature nitrogen recovery and utilization, and achieve the effects of simple structure, convenient installation and use, and low manufacturing cost.

Active Publication Date: 2015-10-07
李远明 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of the new model provides a nitrogen recovery device, its function is only a device for recycling 2.5MPa released nitrogen to the 1.0MPa pipe network, and it cannot realize the recovery and utilization of low-temperature nitrogen discharged after the wind tunnel test

Method used

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  • Low-temperature wind tunnel nitrogen recovery device, and recovery method
  • Low-temperature wind tunnel nitrogen recovery device, and recovery method

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Depend on figure 1 and figure 2 A structural schematic diagram of a low-temperature wind tunnel nitrogen recovery device and a schematic diagram of connection relationship according to an embodiment of the present invention. It can be seen that the present invention includes a low-temperature wind tunnel loop 1 and a nitrogen compression expansion system 3; A nitrogen recovery system 2 is provided, and the three are connected in sequence; the nitrogen recovery system 2 includes a vacuum cryogenic tank 2a and a cryogenic vacuum pump 2b; one end of the vacuum cryogenic tank 2a is connected t...

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Abstract

The invention discloses a low-temperature wind tunnel nitrogen recovery device and a recovery method, and belongs to the field of low temperature wind tunnel technology. According to the low-temperature wind tunnel nitrogen recovery device, the low-temperature wind tunnel nitrogen recovery device is provided with a nitrogen recovery system and nitrogen compression-expansion system after a low-temperature wind tunnel circuit, liquidation recycling of low temperature nitrogen after wind tunnel tests is realized with high efficiency based on that boiling point of liquid under low pressure is reduced. The low-temperature wind tunnel nitrogen recovery device is simple in structure, and low in manufacturing cost, is convenient to use, is capable of realizing recycling of low temperature nitrogen after wind tunnel tests effectively, and reducing energy consumption and cost of low temperature nitrogen treatment after wind tunnel tests.

Description

technical field [0001] The invention relates to a nitrogen recovery device and a recovery method, belonging to the technical field of low-temperature wind tunnels, in particular to a nitrogen recovery device and a recovery method in a low-temperature wind tunnel. Background technique [0002] In low temperature wind tunnel tests, low temperature technology is usually used to obtain a large test Reynolds number, and low temperature is obtained by spraying liquid nitrogen into the wind tunnel circuit, and the liquid nitrogen vaporizes to absorb a large amount of heat to reduce the temperature of the test environment. Because the pressure, temperature, and flow range of the nitrogen gas discharged from the cryogenic wind tunnel are very large. For example, the European large-scale cryogenic transonic wind tunnel (ETW), the flow range is: 50kg / s-250kg / s, the pressure range is: 1.15ba-4.5ba, and the temperature range is: 110k-332k. The usual process cannot recycle it and can onl...

Claims

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Application Information

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IPC IPC(8): C01B21/04
CPCC01B21/0477Y02P20/129
Inventor 陈振华王海廖达雄王凡李远明陈万华黄知龙高荣祝长江刘隆强
Owner 李远明
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