A multi-pressure stage air-supplementing high-temperature heat pump steam system

Abstract

The invention relates to a multi-pressure level air-supplementing high-temperature heat pump steam system, which belongs to the field of application expansion of high-temperature heat pump systems. The heat pump steam system includes a heat source inlet, a heat source throttle valve, an evaporator, a heat source outlet, an air supply compressor, and a main body Compressor, condenser, recuperation control valve group, first regenerator, subcooler, first-stage expansion valve, first flash evaporator and second-stage expansion valve, etc., through multi-stage pressure regulation in the system, effectively improve The heating effect of the system and the efficiency of steam production. The high-temperature heat pump circulation module adopts four pressure levels of low pressure, medium pressure, high pressure and supplementary air pressure to effectively control the working state of the circulating refrigerant, reduce the power consumption of the compressor in the system, and improve the heating effect of the system. The efficiency of steam production is improved, which is conducive to the optimization of the structure of the high-temperature heat pump system and the further development of the field of heat pump steam production.

Description

technical field [0001] The invention relates to a high-temperature heat pump steam system, in particular to a multi-pressure stage air-supplementing high-temperature heat pump steam system. Background technique [0002] With the application of heat pump technology more and more widely, people hope to use it in the field of steam production. Therefore, the heating temperature requirements of the heat pump system are gradually increased, resulting in an increase in the pressure ratio of the system compressor under this working condition. However, at this stage The research on high-temperature heat pump systems is relatively immature, especially the traditional heat pump system is still used in the research of large pressure ratio conditions, so that the performance parameters such as isentropic efficiency and volumetric efficiency of the compressor in the heat pump system under high pressure ratio conditions are relatively immature. Low, the heating performance of the system i...

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Problems solved by technology

[0002] With the application of heat pump technology more and more widely, people hope to use it in the field of steam production. Therefore, the heating temperature requirements of the heat pump system are gradually increased, resulting in an increase in the pressure ratio of the system compressor under this working condition. However, at this stage The research on high-temperature heat pump systems is relatively immature, especially the traditional heat pump system is still used in the research of large pressure ratio conditions, so that the performance parameters such as isentropic efficiency and volumetric efficiency of the compressor in the heat pump system under high pressure ratio conditions are relatively immature. Low, the heating performance of the system is not ideal. In addition, when the condensing temperature is too high, the refrigerant used in the working process is prone to liquid shock to the compressor, which greatly reduces the service life of the compressor.

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