Foundation vibration isolation and three-dimensional damping structure for double-layer containment nuclear power station

Abstract

The invention discloses a foundation vibration isolation and three-dimensional damping structure for a double-layer containment nuclear power station. The foundation vibration isolation and three-dimensional damping structure comprises an inner containment, an outer containment, a reactor core supporting structure, a reactor core structure, a horizontal vibration isolation supporting seat, a vertical vibration isolation supporting seat, a vertical damper, a bidirectional hydraulic cylinder and a damping sliding block, the damping sliding block and the outer containment are in vertical slidingdamping fit, the end of a first piston rod of the bidirectional hydraulic cylinder is connected with the inner containment, a second piston rod of the bidirectional hydraulic cylinder is connected with the damping sliding block, when the first piston rod moves horizontally, the second piston rod drives the damping sliding block to slide in the vertical direction relative to the outer containment.According to the foundation vibration isolation and three-dimensional damping structure for the double-layer containment nuclear power station, through the combined action of the horizontal vibrationisolation supporting seat, the bidirectional hydraulic cylinder, the damping sliding block, the vertical vibration isolation supporting seat and the vertical damper which are arranged, the three-dimensional damping effect is achieved, the special anti-seismic safety requirement of the nuclear power station can be met, and the anti-seismic safety of the nuclear power station structure is remarkablyimproved.

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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