A start-stop reactor system for a pebble bed modular high temperature gas-cooled reactor

Abstract

The invention discloses a reactor start-stop system of a pebble-bed modular high-temperature gas-cooled reactor, and belongs to the field of nuclear reactors. The system comprises a steam-water separator, an inlet pipeline, a steam outlet pipeline, a drainage pipeline, a first bypass steam pipeline, and a second bypass steam pipeline. The inlet pipeline is equipped with a first regulation valve and a first isolation valve in sequence. The steam outlet pipeline is equipped with a second isolation valve, a third isolation valve and a fourth isolation valve in sequence. The drainage pipeline is equipped with a fifth isolation valve, a second regulation valve and a vacuum isolation valve in sequence. The first bypass steam pipeline is equipped with a sixth isolation valve. The second bypass steam pipeline is equipped with a steam turbine generator bypass valve. All or part of superheated steam is discharged into a steam turbine generator to make the flow of a steam generator match that of the steam turbine generator. The first regulation valve and the steam turbine generator bypass valve are regulated to make the steam pressure and temperature of the steam generator match those of the steam turbine generator. Therefore, the operation safety of NSSS (Nuclear Steam Supply System) and the steam turbine generator is ensured.

Description

technical field [0001] The invention relates to the field of nuclear reactors, in particular to a start-stop reactor system of a pebble bed modular high-temperature gas-cooled reactor. Background technique [0002] At present, the pebble bed modular high-temperature gas-cooled reactor power plant adopts a configuration mode in which multiple Nuclear Steam Supply System (NSSS) modules correspond to one turbo-generator, and each NSSS module includes a connected A pebble bed modular high temperature gas-cooled reactor and a steam generator. The high temperature gas-cooled reactor nuclear power plant has a primary loop system and a secondary loop system. For the secondary circuit system, the state of the working medium at the outlet of the steam generator includes subcooled water, saturated steam and superheated steam in sequence, but what the turbogenerator needs is only qualified superheated steam. Specifically, the superheated steam generated in the steam generator is trans...

AI Technical Summary

Problems solved by technology

[0005] Due to the different starting and stopping methods of NSSS and turbogenerator, NSSS and turbogenerator are not synchronized when starting and stopping, which will cause mismatch of steam pressure, temperature and flow between NSSS and turbogenerator, thus affecting NSSS Safe operation with turbogenerators

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