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Steam generator design abundance calculating method

A technology of steam generator and calculation method, which is applied in the direction of calculation, instrument, special data processing application, etc., to achieve the effect of increasing accuracy and reducing risk

Active Publication Date: 2016-10-19
CNNC FUJIAN FUQING NUCLEAR POWER
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Problems solved by technology

However, this method is mainly aimed at the adaptability test of the secondary circuit steam turbine rather than the steam generator margin test

Method used

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  • Steam generator design abundance calculating method
  • Steam generator design abundance calculating method
  • Steam generator design abundance calculating method

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with specific embodiments.

[0018] After the reactor reaches full-power steady-state operation, confirm the actual operating conditions and thermal power of the steam generator, confirm the heat transfer capacity of the steam generator, and compare it with the design value to confirm the margin of the evaporator. In the present invention, hA in the heat transfer calculation formula W=hAΔT is regarded as a unified expression form of heat transfer capacity, and the heat transfer coefficient and heat transfer area are not calculated separately.

[0019] The main steps of the steam generator design margin calculation method of the present invention include: after the first and second loops of the nuclear power plant are in full power and stable operation, shut down the steam generator for blowdown; conduct heat balance measurement of the first and second loops to obtain test data and results; according t...

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Abstract

The invention relates to the technical field of evaluating the heat transfer capability of a steam generator in a nuclear power plant, in particular to a method for calculating a design margin of a steam generator, which provides a reference for subsequent pipe plugging of a steam generator. The main steps of the method include: after the first and second loops of the nuclear power plant run stably at full power, shut down the steam generator blowdown; measure the heat balance of the first and second loops to obtain test data and results; perform data processing according to the test data and results, and confirm that the steam generator heat transfer capacity. The invention does not need to change the working condition of the primary circuit of the reactor, reduces the risk of the test process, and increases the accuracy of the margin of the steam generator.

Description

technical field [0001] The invention relates to the technical field of evaluating the heat transfer capability of a steam generator in a nuclear power plant, in particular to a method for calculating a design margin of a steam generator, which provides a reference for subsequent pipe plugging of a steam generator. Background technique [0002] In the design process of steam generators in nuclear power plants, a margin of 10% is usually considered to deal with the reduction of heat transfer area caused by blockage of heat transfer tubes during the subsequent operation of the power plant, and the heat transfer caused by fouling of heat transfer tubes. The reduction in heat transfer of steam generators caused by the reduction in thermal performance allows the nuclear power plant to operate under design conditions. During the manufacturing process of the actual steam generator, due to the fact that the actual performance of the material is not completely consistent with the desi...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李振振蔡光明鲁忆迅冯杰程宏亚郑东佳孟凡锋兰蛟龙张鹏
Owner CNNC FUJIAN FUQING NUCLEAR POWER
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