Multistage Stirling refrigerating machine

A refrigerator, a technology of all levels, applied in the direction of refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problem of not reaching deep refrigeration temperature, etc., achieve the effect of increased refrigeration depth, wide application range, and simple refrigeration process

Active Publication Date: 2015-03-18
山西三晋之窗商务服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Stirling reversible heat engine cannot reach the deep cooling temperature (below -100°C) when used as a refrigerator.

Method used

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  • Multistage Stirling refrigerating machine
  • Multistage Stirling refrigerating machine

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 figure 2 The two-stage Stirling refrigerator shown is a double-loop connected Stirling refrigerator with 6 working chambers in each stage, and there are 12 working chambers in total in the two stages. For the production of liquefied natural gas. The electric motor 13 is placed in the center of the heat outflow end 2, and the rotating shaft of the electric motor is coaxial with the rotor shaft of the heat engine of the two-stage refrigerating machine and is connected as a whole. The piston sets of the two-stage Stirling refrigerator are stuck on the rotors of their respective heat engines, and the pistons at both ends are respectively inserted into the heat inflow end cylinder and the heat outflow end cylinder. The coupling channel 17 between the two-stage refrigerators communicates with the secondary sealed chambers of the two-stage refrigerators. A cooling water inlet 1 is provided at the lower part of the side of the heat outflow end 2, and a cooling wate...

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PUM

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Abstract

The invention provides a multistage Stirling refrigerating machine. A Stirling reversible heat engine is utilized to serve as a refrigerating machine, and multiple stages of refrigerating machines are connected in series coaxially. Two working cavities, the phase difference of which is pi, of two adjacent stages are communicated with two heat exchange passages of the same interstage heat exchanger, so that reliable transmission of heat of two stages is realized. Two working cavities, the phase difference of which is pi, of the same stage are communicated with two heat exchange passages of the same regenerator, so that rational use of heat is achieved. The enclosed space of an operating condition controller is communicated with a two-stage seal cavity, and all the working cavities have the same lowest working pressure, so that well-balanced running of the whole machine is ensured. The number of stages of the refrigerating machine and refrigerating power can be determined according to requirements, so that the refrigerating machine can satisfy various requirements of refrigerating depth and refrigerating capacity. The refrigerating machine has the advantages that the refrigerating process is simple; less equipment is required; the cost is lower; the refrigerating machine can be used in a large air or natural gas liquefaction plant, and is suitable in a mobile vehicle-mounted refrigerating station, so that marsh gas and coal mine methane gas are subjected to liquefaction treatment.

Description

Technical field [0001] The invention relates to a Stirling refrigerator, in particular to a multistage Stirling refrigerator. Background technique [0002] With the advancement of science and technology, deep refrigeration technology is playing an increasingly important role in some industries. Industries such as aerospace, food processing, medical and health care, fertilizer production, natural gas storage and transportation, and petroleum refining are all inseparable from deep refrigeration technology. The current deep refrigeration technology scheme mainly uses the Linde cycle to realize deep refrigeration through multi-stage compression and throttling expansion. [0003] Natural gas storage and transportation is a representative industry applying deep refrigeration technology. The vast majority of LNG products come from large-scale natural gas liquefaction plants, which are used for natural gas peak shaving and natural gas shipping trade. The micro-LNG liquefaction de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14
Inventor 孔令斌
Owner 山西三晋之窗商务服务有限公司
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