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Recompression circulation compact type supercritical carbon dioxide cycle energy supply system for small sodium reactor

A carbon dioxide and recompression technology, which is applied in steam engine installations, steam applications, machines/engines, etc., can solve the problems of energy island volume, heavy auxiliary equipment, and unsuitable miniaturization scenarios, etc., to achieve strong heat carrying capacity and volume zoom out effect

Pending Publication Date: 2019-03-08
HARBIN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing energy island has a large volume, weight, and auxiliary equipment, and is not suitable for miniaturization scenarios, and then provide a compact supercritical carbon dioxide cycle energy supply system for a small sodium stack recompression cycle

Method used

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  • Recompression circulation compact type supercritical carbon dioxide cycle energy supply system for small sodium reactor

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine figure 1 Illustrate this embodiment, the recompression cycle compact supercritical carbon dioxide cycle energy supply system of the small sodium stack of this embodiment includes a first loop 1 for providing a heat source, a second loop 2 for transferring heat, and a second loop 2 for transferring heat. The third loop 3 for converting thermal energy into electrical energy and the fourth loop 4 for heating pipe network, the circulating fluid of the first loop 1 and the second loop 2 is sodium, the circulating fluid of the third loop 3 and the fourth loop For carbon dioxide, the heat exchange between the first circuit 1 and the second circuit 2 is carried out through the sodium-sodium heat exchanger 11, and the heat exchange between the second circuit 2 and the third circuit 3 is carried out through the sodium-carbon dioxide heat exchanger 12 and realized Power supply, the third circuit 3 is connected with a low-temperature regene...

specific Embodiment approach 2

[0021] Specific implementation mode two: combination figure 1 Describe this embodiment, the recompression cycle compact supercritical carbon dioxide cycle energy supply system of the small-scale sodium stack of this embodiment, the third circuit 3 is also provided with a high-temperature regenerator 14, the outlet of the turbine 21 and the high-temperature regenerator The hot end inlet of 14 is connected, the hot end outlet of the high temperature regenerator 14 is connected with the hot end inlet of the low temperature regenerator 13, the hot end outlet of the low temperature regenerator 13 is connected with the inlet end of the fourth circuit 4, and the fourth circuit The outlet end of 4 is connected with the cold end inlet of the low temperature regenerator 13, the cold end outlet of the low temperature regenerator 13 is connected with the cold end inlet of the high temperature regenerator 14, and the cold end outlet of the high temperature regenerator 14 is connected with t...

specific Embodiment approach 3

[0023] Specific implementation mode three: combination figure 1 Describe this embodiment, the recompression circulation compact type supercritical carbon dioxide circulation energy supply system of the small-sized sodium stack of this embodiment, described fourth circuit 4 is provided with recompressor 23 in parallel, recompressor 23 and turbine 21 , the generator 31 and the main compressor 22 are coaxially arranged, and the fourth circuit 4 is also provided with a flow divider 41 and a flow confluence 42. The outlet of the hot end of the low-temperature regenerator 13 is connected to the inlet of the flow divider 41, and through the flow divider 41 One end of the two streams is connected to the cooler 15, the outlet of the cooler 15 is connected to the inlet of the main compressor 22, the outlet of the main compressor 22 is connected to the inlet of the cold end of the low-temperature regenerator 13, and the outlet of the two streams through the splitter 41 The other end is c...

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Abstract

The invention provides a recompression circulation compact type supercritical carbon dioxide cycle energy supply system for a small sodium reactor, and belongs to the technical field of distributed energy. The problems that the volume, weight, auxiliary machine number of existing energy islands are large, and are not suitable for miniaturization scenes are solved. A first circuit for providing a heat source, a second circuit for transferring heat, a third circuit for converting heat energy into electrical energy and a fourth circuit for heating a pipe network are included, heat exchange is conducted between the first circuit and the second circuit through a sodium-sodium heat exchanger, heat exchange is conducted between the second circuit and the third circuit through a sodium-carbon dioxide heat exchanger and power supply is realized, the third circuit is connected with a low-temperature regenerator, heat exchange is conducted between the third circuit and the fourth circuit throughthe low-temperature regenerator and heat supply is realized, and an arranged turbine generator of the third circuit and a main compressor in the fourth circuit are coaxially arranged. According to therecompression circulation compact type supercritical carbon dioxide cycle energy supply system for the small sodium reactor, the structure is compact, application in a narrow space is more facilitated, and integration is more facilitated.

Description

technical field [0001] The invention relates to a cycle energy supply system utilizing supercritical carbon dioxide cycle, which belongs to the technical field of distributed energy. Background technique [0002] The sodium-cooled fast reactor in the new generation of nuclear power is currently a relatively comprehensive development and a key development reactor type that has been verified to be reliable through experiments. At present, the conventional island of sodium-cooled fast reactor mainly adopts steam-water working medium, but the thermal cycle efficiency is low due to the low steam temperature (about 480°C). In addition, the sodium-water reaction will produce sodium hydroxide, a highly corrosive substance, and hydrogen, an explosive gas, which will affect the safety of nuclear reactors. Conventional island steam turbines using steam-water working medium have a large volume, weight, and auxiliary equipment, which is not conducive to the miniaturization and weight re...

Claims

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Application Information

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IPC IPC(8): F01K27/00F01K25/10F01K7/32F01K17/02F01D15/10F01D15/08
CPCF01D15/08F01D15/10F01K7/32F01K17/025F01K25/103F01K27/00
Inventor 谢敏张春伟何一川杨其国戴博林由岫
Owner HARBIN ELECTRIC CO LTD
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