Simple-partial cooling cycle compact type supercritical carbon dioxide cycle energy supply system for small sodium reactors

Abstract

The invention discloses a simple-partial cooling cycle compact type supercritical carbon dioxide cycle energy supply system for small sodium reactors, and belongs to the technical filed of distributedenergy. The system aims at solving the problems of low thermal cycle efficiency and large equipment occupying space of a conventional cogeneration system and potential safety hazard in sodium-water working medium heat transfer. A second circuit realizes switching between a simple cycle form and a partial cooling cycle form through an equipment bypass, thereby generating electricity by using heator supplying heat while generating electricity. The simple-partial cooling cycle compact type supercritical carbon dioxide cycle energy supply system for small sodium reactors of the invention uses anovel circulating working medium to replace a water-steam working medium currently used in a test reactor to achieve or exceed original system efficiency and realize a switchable nuclear pile reactorcogeneration system, and rationally utilizes the characteristics of a sodium reactor and working medium operation parameters to significantly improve the safety of a nuclear pile system, realize compact arrangement of the equipment and realize lightweight equipment.

Description

technical field [0001] The invention relates to a cogeneration system of heat and power, in particular to a simple-partial cooling cycle compact supercritical carbon dioxide cycle energy supply system of a small sodium pile, belonging 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 vo...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a simple-partial cooling cycle compact supercritical carbon dioxide cycle energy supply system for small-scale sodium piles, to solve the problem of low thermal cycle efficiency, large equipment footprint and sodium-hydraulic mass transfer in traditional combined heat and power systems. Heat poses a safety hazard

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