New core make-up tank to mitigate sloshing effects

Abstract

The invention discloses a novel core makeup tank capable of reducing the influence of sloshing. The core makeup tank comprises a box provided with a cavity and partition members arranged in the box. The partition members divide the middle section of the cavity into a plurality of parts that extend along the height direction of the box. Compared with undivided cavity, each part formed by the partition members is an elongated space with a less diameter-length ratio, and in such space, the sloshing phenomenon is more difficult to happen. By setting partition members, the sloshing phenomenon in the core makeup tank is effectively inhibited; the safety hazards caused by sloshing phenomenon such as inaccurate measurement of liquid level, damaged structure of core makeup tank, and the like, are avoided; and thus the safety and reliability of nuclear power plants are both improved. At the same time, the structure of the core makeup tank is simple, the core makeup tank is easy to process, and thus the core makeup tank is easy to realize and popularize. The partition members barely influence the volume of the core makeup tank and do not influence the water supplying function of the core makeup tank.

Description

technical field [0001] The invention relates to the technical field of safety injection systems of nuclear power plants, in particular to a novel reactor core water supply tank. Background technique [0002] The core make-up tank (CMT for short) is the core equipment of the safety injection system of the passive core cooling system of the third generation nuclear reactor, which stores a large volume of safety injection fluid for the safety injection system. After an accident occurs in the reactor, the core make-up water tank relies on gravity to passively inject low-temperature boron-containing water into the core, and at the same time condenses the saturated steam-water mixture that enters the core make-up water tank through the pressure balance pipe in a natural circulation manner . The core make-up water tank can provide relatively high flow safety injection to the core for a long time to prevent the accident from developing in a worse direction. Therefore, the structura...

AI Technical Summary

Problems solved by technology

When sloshing occurs in the core make-up water tank, the inner wall of the container will be subjected to varying degrees of continuous impact pressure, which may endanger the structural integrity of the core make-up water tank

At the same time, the water level measurement signal in the core make-up water tank will also be affected, causing the water level signal to not accurately reflect the actual situation in the core make-up water tank, and may even cause false triggering of safety signals, reducing the reliability of the nuclear power plant

When the nuclear power plant is installed on land, if an earthquake occurs and an accident occurs in the nuclear power plant, the core make-up water tank may also have the above-mentioned safety problems under vibration

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