Primary loop heating and humidifying system and method for high-temperature gas cooled reactor nuclear power station

Abstract

The invention provides a primary loop heating and humidifying system and a primary loop heating and humidifying method for a high-temperature gas cooled reactor nuclear power station. The system comprises an evaporator inlet isolating valve, an evaporator, a main steam valve, a drain valve, a pressure vessel and an external steam charging valve unit, wherein the evaporator inlet isolating valve, the evaporator and the main steam valve are connected in sequence; the drain valve is arranged between the evaporator inlet isolating valve and the evaporator; and a pipeline between the evaporator andthe main steam is connected with the external steam charging valve unit. According to the method provided by the invention, external steam is charged to a secondary side of the evaporator via the external steam charging valve unit, and a working medium in a primary loop is heated inside the evaporator, so the temperature of the primary loop is increased, and the requirements of heating and dehumidification of the primary loop are met.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and in particular relates to a system and method for heating and dehumidifying a primary circuit of a high-temperature gas-cooled reactor nuclear power plant. Background technique [0002] There are still a large amount of carbon materials in the primary circuit reactor components of high-temperature gas-cooled reactor nuclear power plants. These carbon materials contain a large number of tiny pores. At room temperature, the pores absorb moisture and other impurities from the surrounding environment. , Moisture and other impurities will chemically corrode the carbon material under the high temperature condition of the reactor operation, thereby affecting the strength of the carbon material in the reactor and the safety of the reactor. Condensation at the cold end such as the motor cavity will cause problems such as insulation deterioration and lubricant coating corrosion, endangering equipm...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a system and method for heating and dehumidifying the primary loop of a high temperature gas-cooled reactor nuclear power plant in view of the limitations of the current heating and dehumidification system and method of the high temperature gas-cooled reactor nuclear power plant

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