Damping opposite-thrust type gas wave refrigerating machine

Abstract

The invention provides a hedge damping gas wave refrigerator which belongs to the compressed air expansion refrigeration technical field. The device can realize refrigeration through the moving shock wave and the expansion wave produced in the oscillation tube by the air pressure. The hedge damping gas wave refrigerator is characterized in that the radiation tubes or the oscillation tubes arranged in a circular shape are arrayed in pairs with the same degree of angle between each other, and a damping dissipative structure is connected with the ends of each pair to put through the flow of the two pipes, thus reducing the rigidity of the air compression of the oscillation tubes; thereby the device can constantly run with high speed in working conditions that the short pipe is too long and the rotation rate is low. The device of the invention has the advantages that the structure is simple, the assembly and disassembly are convenient, the condensation and stagnancy of the liquid is avoided, the adaptability to variable working conditions is high, the isentropic efficiency of refrigeration is high, etc. The device of the invention can produce low temperature and can be widely used in the technical fields such as the liquefied separation of mixed gases, the recovery of light hydrocarbon in petroleum gases, the liquefaction of natural gas, and the supply of low-temperature air-conditioning source, etc.

Description

technical field [0001] The invention relates to a damping and opposing gas wave refrigerator, which belongs to the technical field of expansion and refrigeration of pressurized gas. Background technique [0002] Existing heat separators and gas wave refrigerators rely on pressure gas to perform unsteady expansion work on the retained gas in the oscillating tubes with closed ends in sequence, generating compression waves and expansion waves in the retained gas, and converting the pressure energy into heat energy Then it is emitted through the tube wall, and the incident pressure gas consumes its own energy due to expansion and work, and the temperature decreases to realize refrigeration. These refrigerators can work efficiently at lower speeds, avoiding the inconvenience of having to run at high speeds like cryogenic turboexpanders. [0003] However, in the practical application of current thermal separators and gas wave refrigerators, in order to meet the needs of obtaining...

AI Technical Summary

Problems solved by technology

[0003] However, in the practical application of current thermal separators and gas wave refrigerators, in order to meet the needs of obtaining high efficiency at low speeds, the length of the oscillating tube is relatively long, which is easy to vibrate and often causes tube breakage accidents.

And because the temperature of the wall at the end of the longer oscillating tube is lower, energy cannot be dissipated strongly, and the functional rate of the tube is lower

In addition, the pressure wave will be reflected from the closed terminal back to the inlet port, heating the fresh or refrigerated gas, and reducing the cooling efficiency. When the jet frequency is inconsistent with the gas oscillation frequency in the tube, the efficiency will fluctuate with the speed change. Range up to 10% or more

Images