Structure of coaxial pulse tube refrigerator for cooling high-temperature superconductivity filter and manufacturing method thereof

Abstract

The invention discloses a structure of a coaxial pulse tube refrigerator for cooling a high-temperature superconductivity filter and the manufacturing method thereof. The structure is composed of a hot end heat exchanger, a cold head, a heat conducting belt, a cold plate, a high-reflection cold shield, an anti-radiation screen, an H-shaped Dewar flask, a Dewar cover, a thin framework structure and an equipment box. The pulse tube refrigerator is high in reliability and long in service life, the cold end is free of moving parts, and the influence of moving vibration of the cold end on signal transmission of the high-temperature superconductivity filter is eliminated. According to the structure of the coaxial pulse tube refrigerator for cooling the high-temperature superconductivity filter and the manufacturing method thereof, the advantages of the coaxial pulse tube refrigerator of being easy to couple and compact in overall structure are fully utilized, and a stable, reliable, low-noise and low-vibration low-temperature cold source can be provided for the high-temperature superconductivity filter. The structure of the coaxial pulse tube refrigerator for cooling the high-temperature superconductivity filter and the manufacturing method thereof have positive significance for further application and promotion of the high-temperature superconductivity filter and practicability of the coaxial pulse tube refrigerator in fields such as mobile communication.

Description

technical field [0001] The technical field of the present invention relates to the fields of refrigeration and cryogenic engineering, superconducting engineering and communication engineering, and relates to a pulse tube refrigerator and a high temperature superconducting filter, in particular to a coaxial pulse tube refrigerator cooling a high temperature superconducting filter structure and manufacturing method. Background technique [0002] As one of the cutting-edge technologies that have developed rapidly in recent years, high-temperature superconducting technology has many advantages in the field of mobile communications, especially the high-temperature superconducting filter made of high-temperature superconducting materials. Compared with conventional filters, its pass The band loss is small, the stop band suppression is large, the side band is steep, and it can be made into a very narrow band filter, small in size and light in weight. Applied in the field of civil ...

AI Technical Summary

Problems solved by technology

At present, most domestic and foreign high-temperature superconducting filter products for mobile base stations use Stirling refrigerators as low-temperature cold sources, but because moving parts such as the cold head ejector of Stirling refrigerators will bring mechanical vibration and electromagnetic interference signals, It has a great influence on the working output signal of the high temperature superconducting filter

Moreover, the reliability and working life of the Stirling refrigerator are also a major bottleneck affecting its performance.

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