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Gas-liquid separation device and gas-liquid separation control method

A gas-liquid separation device and gas-liquid separation technology, which is applied in the field of gas-liquid separation device and gas-liquid separation control, can solve the problems of slow oil return efficiency and slow oil return method, so as to improve the effect and ensure the oil return efficiency Effect

Pending Publication Date: 2022-04-08
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of oil return is relatively slow. Generally, the gas-liquid separator is required to completely evaporate the refrigerant liquid, and then return the remaining lubricating oil at the bottom to the refrigeration compressor.
[0004] Invention patent 201810148655.1 (published on June 15, 2018) discloses a gas-liquid oil separator for fluorine refrigeration system, which has the functions of gas-liquid separation and oil return. The suction of the machine is provided with an oil suction hose to suck the lubricating oil, but when the liquid level cannot reach the position where the lubricating oil is sucked, it is still necessary to wait until the gas-liquid separator completely evaporates the refrigerant liquid, and then the remaining The lubricating oil is returned to the refrigeration compressor, and the oil return efficiency is relatively slow

Method used

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  • Gas-liquid separation device and gas-liquid separation control method
  • Gas-liquid separation device and gas-liquid separation control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Such as figure 2 As shown, the gas-liquid separation device in this embodiment only includes one adsorber, that is, the first adsorber 21, the first adsorption inlet pipe 23 of the first adsorber 21 communicates with the gas outlet of the evaporator, and the first adsorption outlet pipe 35 communicates with the separation inlet pipe 4 of the gas-liquid separator, the first adsorption liquid outlet pipe 29 is connected to the suction port of the refrigeration compressor through the first injection device 16, and the gas supply source comes from the high-temperature and high-pressure refrigerant from the outlet pipe of the oil separator gas.

[0075] A first saturation sensor 33 is arranged on the first adsorber 21, and a first blowback control valve 41 is arranged between the gas supply source and the inlet port of the first adsorption gas control valve 37, between the gas supply source and the first injection A first injection control valve 18 is provided between the ...

Embodiment 2

[0084] continue to refer figure 1 As shown, the gas-liquid separation device in this embodiment only includes two adsorbers, i.e. the first adsorber 21 and the second adsorber 22, the structure and connection relationship of the first adsorber 21 are the same as in embodiment 1, and the second adsorber 21 The structure and connection relationship of the adsorber 22 is basically the same as that of the first adsorber 21, specifically: the second adsorption inlet pipe 24 of the second adsorber 22 is connected to the gas outlet of the evaporator, and the second adsorption outlet pipe 36 is connected to the gas-liquid separator The separated inlet pipe 4, the second adsorption liquid outlet pipe 30 is also connected to the suction port of the refrigeration compressor through the first injection device 16, and the gas supply source is also the high temperature and high pressure refrigerant gas from the outlet pipe of the oil separator.

[0085] A second saturation sensor 34 is arra...

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Abstract

The invention discloses a gas-liquid separation device with an oil return function and a gas-liquid separation control method. The gas-liquid separation device comprises a plurality of adsorbers, and each adsorber is provided with an adsorption gas inlet pipe, an adsorption gas outlet pipe, an adsorption liquid outlet pipe and a saturation sensor; an adsorption air inlet control valve and an adsorption air inlet check valve are arranged on the adsorption air inlet pipe, an adsorption air outlet control valve and an adsorption air outlet check valve are arranged on the adsorption air outlet pipe, and an adsorption liquid outlet control valve is arranged on the adsorption liquid outlet pipe; the back flushing device is communicated to the inlet end of the air outlet control valve; and the processor is in communication connection with the adsorption air inlet control valve, the adsorption air outlet control valve, the adsorption liquid outlet control valve, the saturation degree sensor and the back flushing device on each adsorber. The adsorber is arranged between the separation air inlet pipe and the air outlet of the evaporator for alternate adsorption separation and alternate regeneration in advance, then lubricating oil is sent back to the refrigerant compressor, and the oil return effect is improved while continuous operation of the system is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a gas-liquid separation device with an independent oil return function and a gas-liquid separation control method. Background technique [0002] Existing refrigeration systems, especially large-scale direct expansion refrigeration systems, in order to prevent the evaporator from carrying liquid and liquid refrigerant directly into the refrigeration compressor, usually between the suction port of the refrigeration compressor and the gas outlet of the evaporator A gas-liquid separator is installed between them. However, while the refrigerant gas at the outlet of the evaporator entrains the refrigerant liquid, it also entrains the refrigerated lubricating oil, so the refrigerant gas at the evaporator outlet (also containing the refrigerated lubricating oil and the refrigerant liquid) needs to be separated into gas and liquid, except In addition to the gas-liquid s...

Claims

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Application Information

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IPC IPC(8): F25B43/02F25B31/00
Inventor 田春雨朱凤朝刘宇
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS