Passive pressurized water reactor nuclear power plant reactor coolant loop layout

Abstract

The invention provides a passive pressurized water reactor nuclear power plant reactor coolant loop layout. The passive pressurized water reactor nuclear power plant reactor coolant loop layout comprises a reactor pressure vessel and a vapor generator; the reactor pressure vessel is provided with a connecting pipe section barrel; the connecting pipe section barrel is provided with a reactor coolant outlet filler neck and a reactor coolant inlet filler neck; the vapor generator is connected with the reactor pressure vessel through a main pipeline. According to the passive pressurized water reactor nuclear power plant reactor coolant loop layout, the manufacturing difficulty and cost of a large CAP series nuclear power plant reactor main pipeline heat section are reduced, and the manufacturing quality of the CAP series nuclear power plant reactor main pipeline heat section is improved; the reactor main pipeline heat section is designed and improved, the arrangement distance between the reactor pressure vessel and the vapor generator is reduced, and the aims of reducing the radial dimension of a reactor safety shell, facilitating the arrangement of the vapor generator and the main system pipeline and reducing the construction cost of a whole nuclear power plant are achieved.

Description

technical field [0001] The invention relates to the field of pressurized water reactor nuclear power plants, in particular to an arrangement of reactor coolant loops in passive nuclear power plants. Background technique [0002] The CAP series of third-generation passive nuclear power plants represented by CAP1000 nuclear power plants have become the main direction of nuclear power development in my country. The main coolant system of the reactor of the CAP1000 nuclear power plant adopts two loops, and each loop is composed of a tube that transfers the reactor refrigerant from the reactor pressure vessel. It consists of the hot section of the main pipeline to the steam generator and two cold sections of the main pipeline that transport the reactor coolant from the reactor main coolant pump (referred to as the main pump) back to the reactor pressure vessel. The inlet nozzle of each main pump is directly connected with the outlet nozzle of the steam generator, and the main pump...

AI Technical Summary

Problems solved by technology

As a result, the manufacturing process, equipment and technical difficulty of the hot and cold sections of the main pipeline are very different, which greatly increases the difficulty and cost of the main pipeline manufacturing

[0003] Due to the large diameter and wall thickness of the hot section of the main pipeline, and the hot section of the main pipeline has two nozzles integrally forged with it, the forging and bending of the main pipeline is particularly difficult, and the manufacturing success rate and qualification rate of the hot section of the main pipeline Low

Images