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Multi-machine two-stage compression cryogenic unit

A two-stage compression and compressor technology, applied to compressors, irreversible cycle compressors, refrigerators, etc., can solve the problems of short compressor life and high maintenance rate, save groundwater, improve operating conditions, and reduce water consumption cost effect

Active Publication Date: 2016-03-23
河南中瑞制冷科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The invention proposes a multi-machine two-stage compression low-temperature unit, which solves the problems of short compressor life and high maintenance rate of the prior art single-stage compression low-temperature unit

Method used

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  • Multi-machine two-stage compression cryogenic unit
  • Multi-machine two-stage compression cryogenic unit

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Embodiment

[0024] Such as figure 1 and figure 2 Commonly shown, it is an embodiment of the multi-machine two-stage compression cryogenic unit of the present invention. The two-stage referred to here includes a one-stage low-pressure compression device 1 and a two-stage high-pressure compression device 2, that is, the compression process is carried out in two stages . Its basic principle and advantages are: the temperature of the refrigerant discharged from the first-stage low-pressure compression is reduced to the saturation temperature under the pressure after being cooled by the mixing barrel, and then enters the second-stage compressor of the second-stage high-pressure compression part, thereby reducing the temperature of the second-stage compressor. The suction temperature of the compressor in the high-pressure compression part greatly improves the operating conditions of the second-stage compressor, avoiding various problems that are easy to occur in the single-stage refrigeration...

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Abstract

The invention provides a multi-compressor dual-grade compression low-temperature machine unit. The problems that a single-grade compression low-temperature machine unit in the prior art is short in service life and high in maintenance rate are solved. The multi-compressor dual-grade compression low-temperature machine unit comprises a first-grade low-pressure compression device and a second-grade high-pressure compression device. The compression process is divided into a first-grade low-pressure compression part and a second-grade high-pressure compression part, wherein after a refrigerant discharged by the first-grade low-pressure compression part is cooled by a mixing barrel, the temperature of the refrigerant is reduced to saturation temperature under the pressure, and the refrigerant enters a second-grade compressor of the second-grade high-pressure compression part, so that the air-absorbing temperature of a compressor of the second-grade high-pressure compression part is reduced, the running working condition of the second-grade compressor is greatly improved, the compression ratio is reduced, and the service life of the compressors is prolonged.

Description

technical field [0001] The invention relates to the technical field of compression cryogenic units, in particular to a multi-machine two-stage compression cryogenic unit. Background technique [0002] In the prior art, compression cryogenic units mainly include two forms of fluorine system and ammonia system, and most of them are single-stage refrigeration cycles, that is, the refrigerant undergoes four processes of compression, condensation, throttling, and evaporation in the refrigeration system to complete a single cycle. stage refrigeration cycle to achieve the purpose of refrigeration. [0003] For a single-stage refrigeration cycle, the lower the evaporation temperature, the higher the compression ratio. The operation of the compressor under extreme conditions (extremely high exhaust temperature and pressure) will cause carbonization of lubricating oil, changes in the physical properties of lubricating oil, and compression ratio. Increase and other problems, resulting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10
Inventor 李书明
Owner 河南中瑞制冷科技有限公司
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