A contact sealed inverted gas wave refrigerator

Abstract

The invention relates to a contact-seal inverted type gas wave refrigerating machine, and belongs to the technical field of pressure gas expansion refrigeration. According to the gas wave refrigerating machine, mechanical seals with good sealing performance are applied to a refrigerating machine, the inner-flow balanced-type double-end-face mechanical seal is located between an intake pipe of an upper machine body and an exhaust pipe of a main machine body, the long-narrow-type single-end-face mechanical seal is arranged at the position, underneath an upper embedded bearing box, in an upper transition box base, and the thin-ladder-type single-end-face mechanical seal is arranged at the position, above a lower embedded bearing box, in the middle of the main machine body. Cooling and lubricating systems are all of a combined structure, so that the complexity, trouble and waste caused by repeated arrangements are reduced, and the reliable work of bearings and the sealing devices is guaranteed. The mechanical seals have the advantages of being good in sealing performance, small in leakage amount, high in vibration resistance, long in service life and the like, so that the defect that the adiabatic efficiency of the refrigerating machine is affected seriously due to the internal leakage of the pressure gas is effectively overcome, and the refrigerating efficiency can be enhanced by more than 10 percent. The inverted type structure is simple, the gas wave refrigerating machine is convenient to disassemble and assemble, labor intensity is relieved, and meanwhile crucial hidden hazards can be reduced.

Description

technical field [0001] The invention relates to a contact type sealed inverted gas wave refrigerator, which belongs to the technical field of pressure gas expansion refrigeration. Background technique [0002] Gas wave refrigerator (89213744.4), multi-stage gas wave refrigerator (96115022.X), damped hedging gas wave refrigerator (ZL200810011255.2), external circulation dissipation gas wave refrigerator (ZL200810011257.1), single-tube gas Chinese patents such as the wave refrigerator (ZL200620089437.8), the common-cavity heat dissipation air wave refrigerator (201010107516.8) and the axial flow self-pressurized air wave refrigerator (ZL2013201009090.9), the refrigeration process belongs to one or more times. Constant expansion refrigeration, and what they have in common is that they all rely on the motor to drive or use the pressure difference of the gas to drive the gas distributor to spin, and at a certain rotation speed, the pressure gas is sequentially sent to the oscilla...

AI Technical Summary

Problems solved by technology

[0005] At present, although the gas wave refrigerator has the characteristics of high efficiency at low speed in practical application, there are common problems in the actual operation and use process: (1 ) Although the rotating speed is low, the machine efficiency is greatly affected by the rotating speed and sealing performance, and its fluctuation range is about 10%~30%; (2) Vibration phenomenon often occurs under high pressure working conditions, and the noise is relatively high Severe, in severe cases, the vibration receiving tube will be broken; (3) Because there are many rotating parts and seals inside the machine, the structure is generally more complicated and disassembly is not convenient

The reason why mechanical seals have never been used is because there are many applicable conditions and restrictions required for the use of mechanical seals, which will result in a more complicated structure and is not easy to realize.

[0009]In order to prevent gas mixing and leakage before and after refrigeration, various forms of dynamic seals and outer seals are generally installed in many places in the refrigerator, which also makes this The load-bearing and compressive capacity of similar machines is reduced to varying degrees

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