A single-compressor three-cold-head pulse tube refrigerator with freely adjustable input work and cooling capacity

Abstract

The invention discloses a single-compressor three-cold-head pulse tube refrigerator with free adjustment of input work and refrigeration capacity, including a numerically controlled AC power supply, a linear compressor, a pressure wave transmission pipeline group, an electronically controlled valve group, and a pulse tube refrigerator Cold head group, cooling water system, user-side low temperature circulation system and data acquisition and control system. The realization of the present invention provides a design and application scheme for variable power operation and adjustment of cooling capacity for a large cooling capacity low temperature system driven by a single compressor with three pulse tube cold heads, effectively solving the problem that the cooling capacity of conventional low temperature systems is difficult to follow the needs of user end equipment The problem of corresponding adjustment enables the same system to meet the needs of users with different cooling capacities, making the low-temperature system with large cooling capacity more convenient to control, stronger application scenario adaptability and higher energy efficiency ratio. For low-temperature refrigerators in smart grids, Applications in fields such as advanced electric power, rail transit, high-efficiency energy storage, and high-end communications are of very positive significance.

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 cooling 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, thousands of ...

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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