Device for supplementing refrigerant to refrigerating system without pressurizing equipment in winter and method thereof

Abstract

The invention relates to the field of compressor refrigeration, in particular to a device for supplementing a refrigerant to a refrigeration system without pressurization equipment in winter. The device comprises a centrifugal compressor, wherein a propylene condenser is fixedly mounted at the side end of the centrifugal compressor, a propylene storage tank is fixedly mounted at one end of the propylene condenser, one end of the propylene storage tank is fixedly connected with a propylene evaporator, the end, away from the propylene storage tank, of the propylene evaporator is connected to a separator, one end of the separator is fixedly connected to a centrifugal compressor, the other end of the separator is connected with a tube bundle device, a propylene storage tank is fixedly connected to the side end of the tube bundle device, and the propylene conveying pump is fixedly mounted at the side end of the propylene storage tank. In addition, the invention also relates to a method for supplementing the refrigerant to the refrigeration system without pressurizing equipment in winter. The centrifugal compressor, the separator, the propylene condenser, the propylene storage tank and the propylene evaporator are communicated for use, so that work of supplementing the refrigerant into the system can be stably completed, and the system can be conveniently used in a low-temperature environment.

Description

technical field [0001] The invention relates to the field of compressor refrigeration, in particular to a device and method for replenishing refrigerant to a refrigeration system in winter without pressurized equipment. Background technique [0002] The centrifugal compressor refrigeration system has the advantages of large cooling capacity, low energy consumption, and recyclable refrigerants, and has been widely recognized in industrial production. At the same time, most refrigerants are flammable, explosive or toxic and harmful media with active chemical properties When stored or used in large quantities, it is a major hazard. During the daily operation of the compressor, there will inevitably be a certain amount of refrigerant consumption. Nitrogen leads the refrigerant into the storage tank, or replaces the refrigeration system partially or as a whole during inspection and maintenance. When the unit is started up again, a large amount of nitrogen is filled in the device....

AI Technical Summary

Problems solved by technology

If in the north with higher latitude in my country, the cold weather in winter often reaches -30°C or even lower. At this time, the saturated vapor pressure of the refrigerant is only 119.5Kpa for ammonia and 211.4Kpa for propylene; The outlet pressure of the compressor of the unit cannot replenish the refrigerant into the system, which brings risks and hidden dangers to the stable operation of the production device. In serious cases, it will cause a production accident in which the device is forced to stop due to the lack of refrigerant.

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