Single-compressor three-cooling-head pulse tube refrigerating machine achieving free adjustment of input work and refrigerating capacity

Abstract

The invention discloses a single-compressor three-cooling-head pulse tube refrigerating machine achieving free adjustment of the input work and the refrigerating capacity. The machine comprises a numerical control alternating current power source, a linear compressor, a pressure wave transmission pipeline set, an electric control valve set, a pulse tube refrigerating machine cooling head set, a cooling water system, a user side low-temperature circulating system and a data acquisition and control system. According to the single-compressor three-cooling-head pulse tube refrigerating machine achieving free adjustment of the input work and the refrigerating capacity, the purpose that the design and application scheme of variable-power operation and refrigerating capacity adjustment is provided for a large-refrigerating-capacity low-temperature system with the feature that the single compressor drives three pulse tube cooling heads is achieved, the problem that the refrigerating capacity of a conventional low-temperature system cannot be easily and correspondingly adjusted according to the requirements of user side equipment is effectively solved, the same system can meet the requirements of users for different refrigerating capacities, the large-refrigerating-capacity low-temperature system can have the more convenient and faster control, the higher application scene adaptabilityand the higher energy efficiency ratio, and can have the very positive significance in the application of the low-temperature refrigerating machine in the fields of intelligent power grids, advanced electric power, rail transit, efficient energy storage, high-end communication and the like.

Description

technical field [0001] The invention relates to the field of refrigeration and low temperature engineering, relates to a pulse tube refrigerator, in particular to a pulse tube refrigerator with a single compressor and three cold heads that can freely adjust input work and refrigeration capacity. Background technique [0002] In recent years, high-temperature superconducting technology working at 77K has played an increasingly important role in smart grids, advanced power, rail transit, high-efficiency energy storage, and high-end communications. The refrigeration system also puts forward an urgent demand. The pulse tube refrigerator has become an ideal choice in this field due to its no moving parts at the cold end, low vibration, low wear, low electromagnetic interference, simple structure and long working life. [0003] The application in the field of high-temperature superconducting power needs to continuously provide a large cooling capacity of hundreds of watts, thousan...

AI Technical Summary

Problems solved by technology

However, at present, conventional refrigeration technologies at home and abroad can only provide refrigerators with fixed cooling capacity. In practical applications, a set of high-efficiency and large-capacity low-temperature systems that can be applied to various occasions is often required. The research and application of ultra-large cooling capacity pulse tube refrigerators with freely adjustable input work and cooling capacity have put forward an urgent demand, but related technologies have just started at home and abroad

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