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Refrigerating compressor test bench system for transcritical or supercritical system

A technology for refrigeration compressors and test benches, used in refrigerators, compressors, gas cycle refrigerators, etc., can solve the problems of control pressure, can not be used in transcritical cycle or supercritical cycle process, etc., to reduce gas pressure fluctuations , the effect of extending the scope of application

Active Publication Date: 2014-08-06
SHANGHAI KAISHAN FROZEN SYST TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this control method is that when the refrigeration system is in a subcritical cycle, since the fluid is in a subcritical state, the condensing pressure is related to the condensing temperature, and the condensing pressure can be controlled by controlling the condensing temperature, that is, the compressor exhaust pressure.
When the refrigeration system is in a transcritical cycle or a supercritical cycle, the pressure and temperature of the fluid in the supercritical state are independent of each other, and its pressure cannot be controlled by controlling its temperature.
Therefore, the existing refrigeration compressor test bench system can only be used for subcritical cycle process and cannot be used for transcritical cycle or supercritical cycle process

Method used

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  • Refrigerating compressor test bench system for transcritical or supercritical system
  • Refrigerating compressor test bench system for transcritical or supercritical system
  • Refrigerating compressor test bench system for transcritical or supercritical system

Examples

Experimental program
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Embodiment 1

[0023] see figure 1 , the present invention discloses a refrigeration compressor test bench system for transcritical or supercritical systems, said system comprising: a first pressure measuring device 2, a first temperature measuring device 3, a second pressure measuring device 4, a second temperature measuring device Measuring device 5, first gas throttling device 6, steady flow device 7, second gas throttling device 8, gas cooler 11, liquid storage tank 12, liquid throttling device 13, mixing tank 9, flow meter 10, cooling device 14. The flow stabilizing device 7 is a device or a pipeline having a fluid stabilizing effect, of course, the stabilizing device 7 may not be provided; in addition, the pipeline between the first gas throttling device 6 and the second gas throttling device 8 It also plays a part of the steady flow effect.

[0024] The inlet pipeline of the compressor 1 under test is provided with the first pressure measuring device 2 and the first temperature meas...

Embodiment 2

[0030] see figure 2 The difference between this embodiment and Embodiment 1 is that in this embodiment, the liquid throttling device 13 is connected to the first temperature measuring device 3, and is adjusted according to the incoming signal related to the inlet temperature of the compressor under test. Refrigerant flow rate of gas cooler 11.

Embodiment 3

[0032] see image 3 The difference between this embodiment and Embodiment 1 is that in this embodiment, the gas cooler 11 is an air-cooled gas cooler; the cooling device 14 is an air-cooling system 143 for receiving the first temperature measuring device 3 transmits the temperature-related signal of the inlet of the compressor 1 under test, and adjusts the air volume and speed of the air-cooled gas cooler 11 accordingly.

[0033] In summary, the refrigeration compressor test bench system proposed by the present invention can be applied to the refrigeration compressor test bench system for transcritical or supercritical systems, and can also be applied to the refrigeration compressor test bench system for subcritical systems; effective expansion The scope of application of the refrigeration compressor test bench is clarified. The gas throttling device part of the system of the present invention is composed of two throttling devices and a flow stabilizing device between them, t...

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Abstract

The invention discloses a refrigerating compressor test bench system for a transcritical or supercritical system, which comprises a first pressure measurement device, a first temperature measurement device, a second pressure measurement device, a first gas throttling device, a second gas throttling device, a gas cooler, a liquid storage tank, a liquid throttling device, a mixing tank, a flowmeter and a cooling device. An inlet pipeline of a tested compressor is provided with the first pressure measurement device and the first temperature measurement device, an outlet pipeline of the tested compressor is provided with the second pressure measurement device, the first gas throttling device is connected with the second pressure measurement device, and the second gas throttling device is connected with the first pressure measurement device. The refrigerating compressor test bench system can be applied to the transcritical or supercritical system and can also be applied to a subcritical system, and accordingly application range of the refrigerating compressor test bench is expanded effectively.

Description

technical field [0001] The invention belongs to the technical field of refrigeration compressors, and relates to a refrigeration compressor test bench, in particular to a refrigeration compressor test bench system that can be used in transcritical or supercritical systems. Background technique [0002] The existing refrigeration compressor test bench system mainly includes: pressure and temperature sensors at the inlet and outlet of the compressor under test, oil-gas separator, oil return valve, condenser, liquid storage tank, filter, high-pressure gas throttling device, high-pressure liquid throttling device device, mixing tank, flow meter, cooling water circulation system, etc. The test bench system controls the condensation temperature by the cooling water circulation system, the suction pressure is controlled by the high-pressure gas throttling device, the suction temperature is controlled by the high-pressure liquid throttling device, and the exhaust pressure is control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00
CPCF25B9/008F25B2309/061
Inventor 王国梁
Owner SHANGHAI KAISHAN FROZEN SYST TECH CO LTD