Base isolation and three-dimensional damping structure for double-layer safety shell nuclear power plant

Abstract

The invention discloses a base isolation and three-dimensional damping structure for a double-layer safety shell nuclear power plant. The base isolation and three-dimensional damping structure comprises an inner safety shell, an outer safety shell, a reactor core supporting structure, a reactor core structure, a horizontal isolation supporting seat, a vertical isolation supporting seat, and a vertical damper, the outer safety shell is fixedly connected with the ground, the inner safety shell is connected with the horizontal isolation supporting seat through a foundation, the inner safety shellis connected with the outer safety shell through a linkage sliding block mechanism, the linkage sliding block mechanism comprises a damping sliding block, the damping sliding block and the outer safety shell are in sliding and clamping combination in the vertical direction, and the sliding block is driven to slide in the vertical direction relative to the outer safety shell when the inner safetyshell moves in the horizontal direction. According to the base isolation and three-dimensional damping structure for the double-layer safety shell nuclear power plant, through the comprehensive actionof the horizontal isolation supporting seat, the linkage sliding block mechanism, the vertical isolation supporting seat, and the vertical damper, the three-dimensional damping effect is produced, the fact that the special anti-seismic safety requirements of the nuclear power plant are met is achieved, and the anti-seismic safety of the nuclear power plant structure is significantly improved.

Description

Technical field [0001] The present invention belongs to the technical field of shock absorption for a double-layer containment nuclear power plant, and specifically relates to a base isolation and three-dimensional shock-absorbing structure for a double-layer containment nuclear power plant. The invention belongs to a passive control damping system, conforms to dynamics and mechanical principles, and improves the seismic safety of related structures and equipment. Background technique [0002] In recent years, the construction level of nuclear power plants in my country 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 integrate all aspects of technology to improve the safety of nuclear power plant infrastructure. Each factor is essential and indispensable, especially seismic safety. [0003] At present, a number of more advanced nuclear po...

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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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