Novel voltage stabilizer for suppressing sloshing

Abstract

The invention discloses a novel voltage stabilizer for suppressing sloshing. The novel voltage stabilizer comprises a cylinder, an upper head fixed to the upper end of the cylinder, a lower head fixed to the lower end of the cylinder, and an upper spacer and a lower spacer in the cylinder. The upper spacer and the lower spacer have cylindrical structures extending along the height direction of the cylinder. The lower end of the lower spacer is fixed to the lower head. The upper spacer is fixed above the lower spacer and is communicated with the lower spacer. The radial size of the upper spacer is larger than that of the lower spacer. The upper end of the upper spacer is open. The upper and lower spacers divide the internal space of the voltage stabilizer into an inner part and an outer part so that the space diameter-length ratio is reduced and sloshing phenomenon is reduced. The fluid flow rate is limited in the radial direction so that the container wall is protected. The accuracy of the water level measurement in the voltage stabilizer is guaranteed. The novel voltage stabilizer is conducive to improvement of the safety, reliability and economy of nuclear power plants.

Description

technical field [0001] The invention relates to the technical field of the main cooling system of a nuclear power plant, in particular to a voltage stabilizer. Background technique [0002] The voltage stabilizer is used in the primary circuit of the nuclear reactor and is an important component of the main cooling system of the nuclear power plant. When an accident occurs in the primary circuit and the pressure increases or decreases, the pressure of the primary circuit is automatically adjusted to ensure the normal operation of the primary circuit. [0003] The environment of sea-based nuclear power plants is harsher than that of land-based nuclear power plants. Under the influence of external conditions such as wind, waves, and ocean currents, the offshore floating platforms or ships carrying nuclear power plants will tilt, heave, and sway. At this time, the water surface in the pressurizer of the nuclear power plant will slosh non-linearly. In this case, the water in the...

AI Technical Summary

Problems solved by technology

At this time, the water surface in the pressurizer of the nuclear power plant will slosh non-linearly. In this case, the water in the pressurizer impacts the vessel wall of the pressurizer, causing different degrees of impact pressure on the inner wall of the pressurizer.

When the impact pressure is relatively large, the sloshing phenomenon may directly endanger the structural integrity of the voltage stabilizer

At the same time, the impact pressure caused by sloshing will have a more obvious impact on the water level measurement in the voltage stabilizer. When the sloshing phenomenon occurs in the voltage stabilizer, the measured water level is higher or lower than the actual water level. In this case, causing Frequent actions of the water level control system may even lead to false triggering of safety signals

In addition, when the sloshing phenomenon is severe, the top of the heating rod in the regulator may be exposed, causing the heating rod to fail to cool down in time and burn out

If the sloshing phenomenon in the voltage stabilizer cannot be effectively suppressed, the safety, reliability and economy of the nuclear power plant will be greatly reduced

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