A pulse tube refrigerator equipped with an adjustable bellows type inertial tube

Abstract

The invention discloses a pulse tube refrigerator with an adjustable corrugated tube type inertia tube. The pulse tube refrigerator comprises a compressor, a post-stage cooler, a heat regenerator, a pulse tube cold-end heat exchanger, a pulse tube, a pulse tube hot-end heat exchanger and a phase modulating mechanism which communicate with one another in sequence; and the phase modulating mechanismcomprises the corrugated tube type inertia tube communicating with the pulse tube hot-end heat exchanger and an air reservoir communicating with the other end of the corrugated tube type inertia tube, a corrugated tube with an adjusting device is taken as the corrugated tube type inertia tube, and the length and the inner diameter of the corrugated tube type inertia tube are adjusted through theadjusting device. The adjustable corrugated tube type inertia tube can be flexibly matched with the pulse tube refrigerator under different working conditions and has the phase modulating adaptabilitythat a traditional inertia tube does not have, and the corrugated tube has the excellent telescoping potential, so that the phase modulating application range is very wide.

Description

technical field [0001] The invention belongs to the field of cryogenic refrigerators, in particular to a pulse tube refrigerator equipped with an adjustable bellows type inertia tube. Background technique [0002] In modern science and technology, the operation of many instruments and equipment such as superconducting transformers, superconducting generators, superconducting motors, superconducting cables, and cryogenic condensing vacuum pumps requires cryogenic refrigerators to provide cooling conditions. The pulse tube refrigerator does not have any moving parts at low temperatures, and has a simple structure and reliable operation. It is a commonly used low-temperature refrigerator. [0003] The basic pulse tube refrigerator was invented by Gifford and Longsworth in the 1960s. The phase modulation forms include small hole gas storage type, two-way air intake type, inertial tube type, active gas storage type, etc. Among them, the inertia tube can adjust the phase in a wi...

AI Technical Summary

Problems solved by technology

[0014] The traditional inertial tube is a tube structure with fixed length and inner diameter, which cannot change the length and inner diameter according to the phase angle requirements of the system, let alone adjust the phase modulation angle when the operating parameters such as input work, pressure amplitude, and frequency change

In addition, conventional inertial tubes have been manufactured with their bend angles fixed, making it difficult to fit well with the location of the hot end of the pulse tube refrigerator and the location of the gas bank

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