Non-active double-layer containment with water storage steel pipe column

Abstract

The invention belongs to the technical field of security structure design of a nuclear power station, and particularly relates to a non-active double-layer containment with a water storage steel pipe column. A base plate is located on a foundation; a steel containment is located on the base plate; an outer side plate is arranged on the outer side of the steel containment and is located on the base plate; a top plate is arranged on the outer side plate, an upper cooling water tank is located on the top plate and is situated right above the steel containment; upper cooling water is stored in the upper cooling water tank; a lower air intake hole and an upper vent hole are located on the outer side plate; a flow distribution disk is hung and welded on the top plate and is located between the upper cooling water tank and the steel containment; an air flow guide plate is welded on the inner side of the outer side plate. The cooling performance of the containment and the viability of the nuclear power station under an accident working condition are improved; and the structural property of the containment can be also greatly improved, so that a structural style of the steel containment is more reasonable, the rigidity of the steel containment is relatively greatly improved, and vibration resistance of the steel containment is improved.

Description

technical field [0001] The invention belongs to the technical field of nuclear power safety structure design, and in particular relates to a passive double-layer containment shell with a water storage steel pipe column. Background technique [0002] The containment / shielding building is the most important structure of a nuclear power plant. Its main function is to withstand internal pressure after a hypothetical design basis accident, contain airborne radioactive releases, and provide protection for the reactor core and coolant system during normal operation. barrier. At the same time, the containment / shielding plant is also the thermal boundary of the reactor, which has the function of discharging the heat generated after the design basis accident into the atmosphere and preventing overpressure. [0003] The currently popular types of containment / shielding plant mainly include prestressed concrete containment with steel lining, double-layer containment composed of prestres...

AI Technical Summary

Problems solved by technology

But the AP1000 nuclear power plant also has certain problems: placing such a huge water tank on the top of the shielded building is obviously detrimental to the earthquake resistance of the structure

However, no major improvements have been made to the containment itself, and no significant progress has been made in the aspects of waste heat removal and overpressure prevention

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