System and method for verifying functions of starting and stopping reactor of high-temperature gas cooled reactor

Abstract

The invention discloses a system and a method for verifying functions of a starting and stopping reactor of a high-temperature gas cooled reactor. A secondary side inlet of a steam generator is communicated with an outlet of a secondary circuit main water supply system; an outlet of an auxiliary boiler is divided into two paths, wherein one path is communicated with an inlet of a steam superheater; the other path, an outlet of the steam superheater and an outlet of the steam generator are subjected to pipe combining through a pipeline and then divided into two paths, wherein one path is communicated with an inlet of a steam separator; the other path is communicated with an inlet of a main steam by-pass; a steam side outlet of the steam separator is communicated with an inlet of the main steam by-pass; a water draining side outlet of the steam separator is communicated with an inlet of a condenser; and an outlet of the main steam by-pass is communicated with the condenser. The system and the method can be used for verifying the functions of the starting and stopping reactor before a unit is started and operated, thereby guaranteeing the reliability and the safety in the process of starting and stopping a high-temperature gas cooled reactor unit.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and relates to a system and a method for verifying the function of high-temperature gas-cooled reactor startup and shutdown equipment. Background technique [0002] As the fourth-generation nuclear power technology, the pebble bed modular high-temperature gas-cooled reactor is recognized by the international nuclear energy community as a reactor type with good safety characteristics. The high-temperature gas-cooled reactor nuclear power plant is equipped with start-stop reactor equipment. During the start-up and shutdown process of the unit, the start-stop reactor equipment is used to adjust the steam parameters of the secondary circuit outlet of the nuclear island steam generator to meet the start-up requirements of the conventional island steam turbine. It is an important part of the high-temperature gas-cooled reactor. component. In the prior art, the functional verification of the star...

AI Technical Summary

Problems solved by technology

First of all, although some functions of the start-stop reactor equipment can be verified in advance during the unit simulation test stage, in the actual operation process, with the change of steam parameters at the outlet of the secondary side of the steam generator, the start-stop reactor equipment will involve various changes in working conditions , there is often a certain difference between the conclusions obtained through the unit simulation test and the actual operation results, and its actual function cannot be accurately verified; Once the actual function is different from the expected function, it will cause a series of accidents such as emergency shutdown of the reactor

In view of the above situation, how to ensure the function of the equipment to meet the requirements of the unit before the unit starts operation is crucial to the safe and stable operation of the high-temperature gas-cooled reactor. The current design ideas of the high-temperature gas-cooled reactor cannot solve this problem

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