Four-stage cascade refrigerating device with multi-stage water cooler

A water cooler and cascade refrigeration technology, which is applied in the direction of compressors, subcoolers, and refrigerators with cascade operation, which can solve the problems of low refrigeration efficiency, fluctuation and deviation of working conditions, and overheating of compressor suction. and other problems, to achieve the effect of improving cooling capacity and cooling efficiency, ensuring safe operation and improving cooling efficiency

Pending Publication Date: 2020-04-03
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cascade refrigeration devices currently used in the industry still have some areas to be improved: first, the cooling efficiency is low, and a large amount of electric energy can only be used to obtain a very limite...

Method used

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  • Four-stage cascade refrigerating device with multi-stage water cooler
  • Four-stage cascade refrigerating device with multi-stage water cooler

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Embodiment Construction

[0024] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, this embodiment provides a four-stage cascade refrigeration device with a multi-stage water cooler, which is formed by cascading four relatively independent refrigeration cycles. The first-stage refrigeration cycle includes a first-stage compressor 1, a first-stage Oil separator 2, primary condenser 3, primary expansion valve 4, secondary condensing evaporator 5; the secondary refrigeration cycle includes secondary compressor 6, secondary oil separator 7, secondary water cooler 8, The secondary precooling regenerator 9, the secondary condensing evaporator 5, the secondary subcooling regenerator 10, the secondary expansion valve 11, the tertiary condensing evaporator 12, and the secondary expansion vessel 13; the tertiary refrigeration cycle includes Three-stage compressor 14, t...

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Abstract

The invention relates to the field of cascade refrigeration, and provides a four-stage cascade refrigerating device with a multi-stage water cooler. The four-stage cascade refrigerating device cascades by four pieces of relatively independent refrigerating circulation. A water cooler is independently arranged on a second-stage compressor high-temperature gas exhaust pipeline, a third-stage compressor high-temperature gas exhaust pipeline and a fourth-level compressor high-temperature gas exhaust pipeline of the cascade refrigerating circulation, cheap cooling water which can be easily obtainedand is out of a system is introduced, and therefore, a refrigeration quantity and refrigeration efficiency can be effectively improved. Meanwhile, a precooling heat regenerator and an undercooling heat regenerator are configured in a second-stage high-temperature pipeline, a third-stage high-temperature pipeline and a fourth-stage high-temperature pipeline of the cascade refrigerating circulation, so that refrigeration efficiency can be improved, and the safe operation of a compressor can be guaranteed.

Description

technical field [0001] The invention relates to the field of cascade refrigeration, in particular to a four-stage cascade refrigeration device with multi-stage water coolers. Background technique [0002] At present, the cascade refrigeration system (including classic cascade and self-cascade refrigeration systems, etc.) is an important way to obtain low temperatures from -100°C to -150°C. and other fields have a wide range of applications. However, the cascade refrigeration devices currently used in the industry still have some areas to be improved: first, the cooling efficiency is low, and a large amount of electric energy can only be used to obtain a very limited low-temperature cooling capacity; second, the complexity of the cascade refrigeration system leads to easy working conditions. Fluctuations and offsets cause compressor suction overheating, lubrication deterioration and even burnout. Contents of the invention [0003] The purpose of the present invention is t...

Claims

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Application Information

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IPC IPC(8): F25B7/00F25B40/02F25B40/06
CPCF25B7/00F25B40/02F25B40/06F25B2400/07
Inventor 田奇琦汪琦沈旭东周爱民李佳陈亮周家勇徐飞方芳李毅舟
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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