Base-isolation and three-dimensional shock-absorbing structure of double-containment nuclear power station

Abstract

The invention discloses a base-isolation and three-dimensional shock-absorbing structure of a double-containment nuclear power station. The structure comprises an inner containment, an outer containment, a reactor core supporting structure, a reactor core structure, a horizontal shock-isolation supporting seat, a vertical shock-isolation supporting seat, a vertical damping device, a first hydraulic cylinder, a second hydraulic cylinder and a sliding block, the sliding block is installed on the outer wall of the outer containment, the second hydraulic cylinder is installed in the outer containment, the first hydraulic cylinder is connected with the second hydraulic cylinder, and the sliding block is driven to slide relative to the outer containment in the vertical direction by a second piston rod when a first piston rod is horizontally moved. According to the structure, a three-dimensional shock-absorbing effect is generated by the comprehensive effect of the horizontal shock-isolationsupporting seat, the first hydraulic cylinder, the second hydraulic cylinder, the sliding block, the vertical shock-isolation supporting seat and the vertical damping device, the special shock resisting safety demands of the nuclear power station can be achieved, and the shock-absorbing safety performance of the nuclear power station structure is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of shock absorption for double-layer containment nuclear power plants, and in particular relates to a basic shock-isolation and three-dimensional shock-absorbing structure for double-layer containment nuclear power plants. The invention belongs to a passive control damping system, conforms to dynamic and mechanical principles, and improves the anti-seismic safety of related structures and equipment. Background technique [0002] In recent years, my country's nuclear power plant construction level has been continuously improved, and has gradually developed to the forefront of the world. Due to the importance of nuclear power plant safety and the high cost of accidents, we are required to comprehensively improve the safety of nuclear power plant infrastructure, and each factor is crucial, especially the seismic safety. [0003] At present, a number of advanced nuclear power plant projects in my country have a...

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Problems solved by technology

[0003] At present, a number of advanced nuclear power plant projects in my country have adopted the design concept of double-layer containment. The double-layer containment is adopted. The inner layer ensures that radioactive materials cannot leak out in the event of a reactor accident, and the outer layer resists damage from external impacts. Resist impacts similar to commercial large aircraft, but due to the randomness of earthquakes, advanced technology is still required to reduce the seismic response of nuclear power plants

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