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Apparatus and method for chemical dosing and rehydration for nuclear power plant containment filter discharge system

A technology of a liquid replenishing device and a discharge system, which is applied in the field of nuclear safety, can solve the problems of inflexible liquid dispensing and replenishing, inconvenient use, poor anti-seismic effect, etc., and achieves the effect of flexible and reliable replenishing method, solving the problem of replenishing, and achieving remarkable effects.

Active Publication Date: 2021-01-19
中广核工程有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the current design scheme is inconvenient to use, and the anti-seismic effect is poor, and the liquid preparation and replenishment are not flexible

Method used

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  • Apparatus and method for chemical dosing and rehydration for nuclear power plant containment filter discharge system
  • Apparatus and method for chemical dosing and rehydration for nuclear power plant containment filter discharge system
  • Apparatus and method for chemical dosing and rehydration for nuclear power plant containment filter discharge system

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Effect test

Embodiment 1

[0026] An embodiment of the present invention provides a chemical dosing and liquid replenishment device for the containment filtration and discharge system of a nuclear power plant, see figure 1 , figure 1 It is a schematic diagram of the device according to Embodiment 1 of the present invention, and the device includes: a rehydration tank 100 for storing the mixed chemical solution and / or returning and storing the qualified medical solution from the washing unit; a pipeline assembly 200, one end of which is connected to The liquid replenishment tank 100, the other end of the pipeline assembly 200 is detachably connected to the containment filter and discharge system, and is used to control The water washing unit 300 performs mobile rehydration. The chemical dosing and rehydration device of the present invention is removably connected to the water washing unit 300 of the containment filtration and discharge system. The mobile chemical dosing and rehydration device is economica...

Embodiment 2

[0038] The implementation of the present invention provides a chemical dosing and liquid replenishment method for the containment filtration and discharge system of a nuclear power plant, which is applicable to the chemical dosing and liquid replenishment device shown in Embodiment 1, see Figure 6 , the method includes: setting the chemical dosing and rehydration device on the truck, and movably connecting with the water washing unit; detecting the water level signal or the drug concentration signal in the water washing unit in real time, and wirelessly transmitting the detection signal to the background control system ; The background control system judges that the water level or concentration value of the washing unit is lower than the preset threshold, performs real-time monitoring and sends out an alarm prompt, activates the valves of the active rehydration channel and conducts the rehydration channel to realize mobile rehydration. When the water washing unit needs to be o...

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Abstract

The invention provides a chemical dosing and liquid replenishment device and method for a nuclear power plant containment filtration and discharge system. The chemical dosing and liquid replenishmentdevice can be movably connected with the containment filtration and discharge system, and includes a liquid replenishment tank for storing a mixed chemical solution and a stored qualified medicine solution returned from a washing unit and a pipeline assembly for mobile liquid replenishment for the washing unit when a liquid level or chemical concentration signal received in the washing unit in thecontainment filtration and discharge system is lower than a preset threshold value. According to the chemical dosing and liquid replenishment device and method for the nuclear power plant containmentfiltration and discharge system, the problems that in the prior art, the anti-seismic effect is poor due to the integrated arrangement of the chemical dosing and liquid replenishment device and the nuclear power plant containment filtration and discharge system, and the process of liquid distribution and liquid replenishment is complex are solved; and by adopting the chemical dosing and liquid replenishment device, the site accessibility is good, the optimal and most convenient liquid replenishment location can be selected in a plant space, the long-term liquid replenishment operation of thecontainment filtration and discharge system after a serious accident is facilitated, and the long-term cooperation with emergency measures inside and outside the plant and water replenishment water sources is facilitated.

Description

technical field [0001] The invention relates to the technical field of nuclear safety, in particular to a chemical dosing and fluid replenishment device and method for a nuclear power plant containment filter discharge system provided for nuclear power plants. Background technique [0002] During the safety design of nuclear power plants, the possibility of occurrence of nuclear power plant conditions that may cause early radioactive releases or large radioactive releases must be practically eliminated. After a severe accident in a nuclear power plant reactor, the melting of the core will lead to the continuous accumulation of a large amount of steam and non-condensable gas in the containment, which seriously threatens the integrity of the containment. Therefore, it is necessary to discharge these gases out of the shell through active pressure relief, so that the pressure inside the containment does not exceed its bearing limit, so as to ensure the integrity of the containme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F9/06F17D1/14F17D3/01F17D3/18
CPCF17D1/14F17D3/01F17D3/18G21F9/06
Inventor 鲍青波周绍飞戚华峰胡剑彭跃
Owner 中广核工程有限公司