Surge wave pipe structure of nuclear power station voltage stabilizer

A voltage stabilizer and wave tube technology, applied in the field of the voltage stabilizer wave tube structure, can solve the problems of instability, difficulty in reactor plant layout, increased equipment complexity, installation difficulty and maintenance workload, etc., to improve safety, The effect of facilitating the promotion of the application

Inactive Publication Date: 2012-10-31
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

A lot of research is to change the arrangement of the wave tube, such as changing the angle between the wave nozzle on the main pipeline and the horizontal plane from 17' to 38 degrees or vertical direction, but this solution increases the height of the pressurizer, which will cause the reactor building Difficulties in internal arrangement
Patent 200920135851.1 provides a method, which arranges a heating device between the wave tube and the insulation layer, and eliminates thermal stratification by heating the low-temperature part of the wave tube. This solution requires the installa

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  • Surge wave pipe structure of nuclear power station voltage stabilizer
  • Surge wave pipe structure of nuclear power station voltage stabilizer
  • Surge wave pipe structure of nuclear power station voltage stabilizer

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings.

[0020] In a pressurized water reactor nuclear power plant, nuclear fuel is fissioned in the reactor to convert nuclear energy into thermal energy. The heat generated during normal operation of the reactor core is transferred through the coolant system to the steam generator, which produces the saturated steam required to propel the turbo-generator set. The coolant cooled by the working fluid of the steam turbine is pumped back to the reactor by the main pump to absorb heat again, and so on.

[0021] like figure 1 As shown, the coolant system of the current commercial pressurized water reactor nuclear power plant is generally connected with the reactor pressure vessel 4 by two to four loops, each loop has a main coolant pump 6, a steam generator 5 . The entire system shares a single voltage regulator 1. The reactor coolant system relies on the pressure regulator 1 f...

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Abstract

The invention discloses a surge wave pipe structure of a nuclear power station voltage stabilizer. The surge wave pipe structure is used for releasing and eliminating thermal stratification. The urge wave pipe structure comprises a surge wave pipe for connecting a voltage stabilizer and a main pipeline and is characterized in that a rotational flow mixing groove is adopted at the connection section of the surge wave pipe and the main pipeline; and the rotational flow mixing groove is connected with a light tube section in mode of welding. With the adoption of the surge wave pipe structure, the damage caused by the thermal stratification phenomenon due to the reactor coolant inside the surge wave pipe structure of the nuclear power station voltage stabilizer is reduced, so that the security of a nuclear power station is improved; and the surge wave pipe structure is applicable to the transformation of a surge wave pipe of a voltage stabilizer in the existing arrangement mode, or used in voltage stabilizer surge wave pipe in new arrangement mode.

Description

Technical field: [0001] The invention relates to a pressure stabilizer wave tube structure for thermal stratification of nuclear power plants, in particular to a pressure stabilizer wave pipe structure for alleviating and eliminating thermal stratification of nuclear power plants. Background technique: [0002] In a pressurized water reactor nuclear power plant, the surge tube connects the main circuit of the reactor and the voltage stabilizer, and is the main transmission channel for the voltage stabilizer to control the pressure of the main system. During operation, the fluid from the main circuit has a low temperature and a high density, occupying the lower part of the section of the wave tube; the fluid from the voltage stabilizer has high temperature and low density, and occupies the upper part of the section of the wave tube. This phenomenon is the fluctuation of the voltage stabilizer. Tube thermal stratification. The thermal stratification of the fluid will cause th...

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Application Information

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IPC IPC(8): G21C15/14
CPCY02E30/40Y02E30/30
Inventor 乔守旭王海军顾红芳张磊罗毓珊
Owner XI AN JIAOTONG UNIV
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