An improved structure of the simulation body of the core replenishment tank

Abstract

The invention discloses an improved structure of a simulation body of a core water supply tank, which comprises a cylinder body of the simulation body of the core water supply tank, a magnetic flap liquid level gauge is arranged on the side of the cylinder body of the simulation body of the core water supply tank, and There are also four layers of pressure measuring components on the side of the box simulation body. The pressure measuring components are connected through pulse pipelines, and differential pressure liquid level gauges are installed on the pulse pipelines between adjacent two layers of pressure measuring components. There are also 9 sets of temperature measuring components installed on the side of the cylinder of the box simulation body. The invention solves the problem that the steam condensation behavior in the core water supply tank will cause a false liquid level during the liquid level measurement, greatly improves the accuracy of the liquid level measurement, and measures the temperature through 9 sets of temperature measurement components, which overcomes the fluid temperature The layered measurement problem reduces the research difficulty of the energy dissipation problem of the core make-up water tank.

Description

technical field [0001] The invention relates to a high-pressure safety injection system in a passive core cooling system of a nuclear reactor, in particular to an improved structure of a simulation body of a core water supply tank. Background technique [0002] Core Make-up Tank (CMT for short) is the core equipment of the high-pressure safety injection system in the passive core cooling system of the third-generation nuclear reactor, which stores a large volume of high-pressure safety injection fluid for the high-pressure safety injection system. After non-LOCA accidents and LOCA accidents in the reactor, the core make-up water tank relies on gravity to passively inject low-temperature water into the core, and at the same time condenses the saturated steam water that enters the core make-up water tank through the pressure balance pipe in a natural circulation manner mixture. The core make-up water tank can provide relatively high flow safety injection to the core for a lon...

AI Technical Summary

Problems solved by technology

However, the steam condensation behavior in the core make-up water tank will cause false liquid level problems during liquid level measurement, which will affect the accuracy of liquid level measurement

In addition, there is a temperature difference between the fluid entering the core make-up water tank through the pressure balance pipe and the original fluid inside it, resulting in temperature stratification of the fluid, which increases the difficulty of research on the energy dissipation of the core make-up water tank

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