Low-temperature refrigerating system for oil gas liquefaction

By designing a low-temperature refrigeration system for oil and gas liquefaction, using a low-power compression and expansion mechanism to separate the incomplete liquefaction refrigerant from incomplete liquefaction of refrigerant in the prior art, the problem of poor refrigeration effect caused by incomplete liquefaction of refrigerant in the prior art is solved, and energy saving and lower refrigeration temperature are achieved.

CN119687648AActive Publication Date: 2025-03-25SHANGHAI YIKEMEI ENERGY SAVING TECH CO LTD
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Patent Information

Application Number
CN202510209809.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2025-03-25
Estimated Expiration
2045-02-25

AI Technical Summary

Technical Problem

Existing refrigerant refrigeration equipment relies on high-power compressors, which consumes a lot of power, and when the refrigerant compression pressure is insufficient, it is easy to cause incomplete liquefaction, resulting in poor refrigeration effect.

Method used

A low-power energy-saving refrigerant refrigeration device is designed. By separating incompletely liquefied refrigerant gas and liquid, using liquid refrigerant for oil and gas refrigerant, and using gaseous refrigerant for oil and gas pre-cooling, thereby achieving energy saving and improving refrigeration effect.

Benefits of technology

Energy saving is achieved while avoiding the impact of incomplete liquefaction of refrigerant. Refrigerants with lower boiling points can be used to obtain lower refrigeration temperatures and flexibly adjust the pressure of the compression and expansion mechanisms to be compatible with refrigerants of different characteristics.

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Abstract

The invention relates to the field of refrigeration devices, in particular to a low-temperature refrigeration system for oil gas liquefaction, which comprises an air cooling mechanism, the air cooling mechanism comprises an inverted isosceles trapezoid heat dissipation box, and a compression mechanism and an expansion mechanism are respectively arranged in parallel on waist lines of two sides of the heat dissipation box; an exhaust one-way valve is assembled at the end of the compression cylinder and connected with the air inlet end of the heat dissipation box. According to the refrigerating device, the liquid refrigerant can be used for oil gas refrigeration and the gaseous low-temperature refrigerant can be used for oil gas pre-cooling through gas-liquid separation of the refrigerant which is not completely liquefied, so that the purpose of saving energy is achieved, and the influence caused by incomplete liquefaction of the refrigerant is avoided; the refrigerant is allowed to be incompletely liquefied, so that the refrigerant with the lower boiling point can be used, the lower refrigeration temperature can be obtained, the compression mechanism and the expansion mechanism are controlled by the independent servo electric push rods, and the compression pressure of the compression mechanism and the negative pressure of the expansion mechanism can be flexibly adjusted according to different boiling points of the refrigerant.
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