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Novel thermal hydraulic coupling calculating method for spent fuel pool and storage grid

A technology of spent fuel pool and storage grid, which is applied in the field of spent fuel storage design of nuclear power plants, can solve problems such as lack of direct coupling, and achieve the effects of ensuring safety, improving economy, and safety and accuracy.

Active Publication Date: 2015-04-29
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology

[0004] In the current thermal analysis and calculation, the analysis and calculation of the spent fuel pool adopts the CFD method, and the analysis and calculation of the spent fuel storage grid adopts the single-channel model method. Although these two methods are applied in the thermal analysis and calculation, but are performed separately, and there is no direct coupling between the two

Method used

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  • Novel thermal hydraulic coupling calculating method for spent fuel pool and storage grid
  • Novel thermal hydraulic coupling calculating method for spent fuel pool and storage grid
  • Novel thermal hydraulic coupling calculating method for spent fuel pool and storage grid

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Embodiment

[0035] This embodiment takes the spent fuel storage of the M310 nuclear power plant as the description object, and introduces the specific content of the thermal-hydraulic coupling calculation method of the spent fuel pool of the M310 nuclear power plant under normal cooling operation conditions.

[0036] (a) CFD method modeling and analysis calculation of spent fuel pool.

[0037] In the spent fuel pool, 22 large storage grids are placed (each grid is composed of several storage units, and a fuel assembly is placed in each storage unit), figure 2 The simulated schematic diagram of spent fuel pool and storage grid is given, figure 2 Among them, 12 is the spent fuel pool, and 13 is the storage grid. image 3 A schematic diagram of the storage rack structure is given, image 3 Among them, 14 is a storage unit, 15 is a grid panel, 16 is a supporting plate, 17 is an auxiliary water inlet hole, and 18 is a supporting leg. According to the spent fuel pool and storage grid struc...

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Abstract

The invention relates to the technology of spent fuel storage design of a nuclear power plant, and specifically relates to a novel thermal hydraulic coupling calculating method for a spent fuel pool and a storage grid. The method is able to perform actual simulation and coupling calculation for a flowing field and a temperature field of the whole spent fuel pool and the storage grid, so as to obtain the distribution of cooing agent temperature fields of the whole spent fuel pool and the storage grid as well as the distribution of temperature of a spent fuel assembly. With the adoption of the calculation method, the safety of the spent fuel storage can be accurately evaluated, so that the economy of the spent fuel storage of the nuclear power plant can be increased, and the safety of the spent fuel storage in the operation period of the nuclear power plant can be ensured.

Description

technical field [0001] The present invention relates to nuclear power plant spent fuel storage design technology, in particular to a calculation method based on a new CFD (computational fluid dynamics) method coupled with a traditional thermal analysis method (single-channel model) to calculate the entire spent fuel pool The flow field, temperature field and storage grid are simulated more realistically. Background technique [0002] At present, the PWR power plants built in China are all equipped with spent fuel storage pools. During the refueling overhaul, the core components are unloaded into the storage grids in the spent fuel storage pools. After the primary circuit is overhauled, some of them are unloaded. Components and new components are reloaded into the core, and another part of the spent fuel components with high burnup will be placed in the storage grid in the spent fuel pool for long-term storage. [0003] Cooling of spent fuel assemblies in spent fuel storage ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 刘建平张慧敏石雪垚陈巧艳郭强王辉韩晓峰
Owner CHINA NUCLEAR POWER ENG CO LTD
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