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A combined cooling and power supply system

A technology of combined cooling and power supply, linear motor, applied in refrigerators, refrigeration and liquefaction, gas cycle refrigerators, etc., can solve the difficulty of matching between free piston Stirling engine and pulse tube refrigerator, and the ability of resonance tube to transmit sound function. It can improve the sound power transmission capacity, improve the efficiency, and reduce the loss of the resonance tube.

Active Publication Date: 2019-01-08
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) The standing wave component of the acoustic resonant tube is relatively large. On the one hand, it makes it difficult to match the free-piston Stirling engine with the pulse tube refrigerator;
[0010] (2) The vibration inertia of the system is large, and the linear motor placed on the room temperature side of the pulse tube refrigerator has a poor effect on auxiliary vibration

Method used

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  • A combined cooling and power supply system
  • A combined cooling and power supply system
  • A combined cooling and power supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 It is a schematic structural diagram of the cogeneration system provided by Embodiment 1 of the present invention. The combined cooling and power system includes a free-piston Stirling engine 1, a linear motor 2, an acoustic resonance tube 3 and a pulse tube refrigerator 4; the linear motor 2 is connected to the compression chamber 16 of the free-piston Stirling engine 1; One end of the acoustic resonance tube 3 communicates with the compression chamber 16 , and the other end communicates with the pulse tube refrigerator 4 .

[0043] In this embodiment, the free-piston Stirling engine 1 and the linear motor 2 are in a coupled connection structure.

[0044] For the convenience of description, the free-piston Stirling engine is referred to as the engine for short, and the pulse tube refrigerator is referred to as the refrigerator for short.

[0045] The free-piston Stirling engine 1 comprises:

[0046] The pressure-resistant casing 11 of the engine connected t...

Embodiment 2

[0074] figure 2 Schematic diagram of the structure of the cogeneration system provided by Example 2 of the present invention. In this embodiment, the free-piston Stirling engine 1 and the linear motor 2 are arranged separately. Such as image 3 As shown, the combined cooling and power system is composed of a free-piston Stirling engine 1 , two opposed linear motors 2 , an acoustic resonance tube 3 and a pulse tube refrigerator 4 .

[0075] The free-piston Stirling engine 1 comprises:

[0076] engine pressure housing 11;

[0077] An annular room temperature heat exchanger 12 and an annular heat regenerator 13 sequentially installed on the inner wall of the engine pressure casing 11;

[0078]The high-temperature heat exchanger 14 installed above the regenerator 13, the high-temperature heat exchanger is a tube bundle structure with external heat exchange fins, one end is connected to the regenerator 13, and the other end is connected to the expansion chamber 15;

[0079] T...

Embodiment 3

[0092] image 3 Schematic diagram of the structure of the cogeneration system provided by Example 3 of the present invention. In this embodiment, the free-piston Stirling engine 1 and the linear motor 2 are arranged separately. Such as Figure 4 As shown, the combined cooling and power system is composed of a free-piston Stirling engine 1 , two opposed linear motors 2 , an acoustic resonance tube 3 and a pulse tube refrigerator 4 .

[0093] The free-piston Stirling engine 1 comprises:

[0094] The pressure-resistant casing 11 of the engine connected to one side of the acoustic resonance tube;

[0095] An annular room temperature heat exchanger 12 and an annular heat regenerator 13 sequentially installed on the inner wall of the engine pressure casing 11;

[0096] The high-temperature heat exchanger 14 installed above the regenerator 13, the high-temperature heat exchanger 14 is a tube bundle structure with external heat exchange fins, one end is connected to the regenerato...

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Abstract

The invention discloses a combined cooling and power system comprising a free piston Stirling engine (1), a linear motor (2), an acoustic resonant tube (3) and a pulse tube refrigerator (4). The linear motor (2) is connected to a compression cavity (16) of the free piston Stirling engine (1), one end of the acoustic resonant tube (3) communicates with the compression cavity (16), and the other end of the acoustic resonant tube (3) communicates with the pulse tube refrigerator (4). The refrigeration amount needed for gas liquefaction can be provided, electric power needed for engine heat dissipation and operation of other external equipment can be provided, and the function of combined cooling and power is achieved. Meanwhile, by means of the arrangement structure of the system, the oscillation starting temperature of the engine can be significantly reduced, loss of the resonant tube is reduced, power density is improved, and the stability and reliability of the system are improved.

Description

technical field [0001] The invention relates to the field of energy utilization, in particular to a combined cooling and power supply system. Background technique [0002] The combined cooling and power plant burns a lower proportion (generally 15% to 30%) of combustible gas (such as natural gas, coal bed methane and shale gas, etc.) to liquefy the remaining large proportion of the gas, and provides auxiliary equipment (such as The electricity required for the operation of pumps, fans, valves and control systems, etc.) has important application prospects in small gas liquefaction fields such as scattered gas fields and ocean-going LNG (liquefied natural gas) carriers. [0003] Compared with the conventional internal combustion engine power generation-compression-expansion phase change liquefaction process, the regenerative combined cooling and power system does not need an additional generator, and the working medium is environmentally friendly, the system is simple, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02G1/043F02G1/057F25B9/14
CPCF02G1/0435F02G1/057F25B9/145F25B2309/1402
Inventor 余国瑶戴巍李小伟吴张华罗二仓
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI