Three-dimensional vibration isolation structure for small nuclear reactor

Abstract

The invention relates to a three-dimensional vibration isolation structure for a small nuclear reactor. A horizontal vibration isolation support is arranged between a foundation base and a base vibration isolation bottom plate; a tuned mass damper support is arranged between the base vibration isolation bottom plate and a tuned mass damper substructure-inner containment; a nuclear reactor supporting structure is arranged in the tuned mass damper substructure-inner containment; the nuclear reactor supporting structure is arranged on the base vibration isolation bottom plate through a vertical vibration isolation support; vertical overturning prevention members are annularly arranged on the periphery of the nuclear reactor supporting structure and fixedly connected with the base vibration isolation bottom plate; horizontal same-position members are arranged between the vertical overturning prevention members and the nuclear reactor supporting structure; and structure vertical damping members are annularly arranged between the vertical overturning prevention members and the nuclear reactor supporting structure. According to the three-dimensional vibration isolation structure, the structure vertical and horizontal vibration isolation effect is remarkable, anti-seismic robustness is good, the vibration reduction effect is stable, and the anti-seismic safety of the nuclear power plant structure of the small nuclear reactor can be improved significantly.

Description

technical field [0001] The invention relates to a shock-isolation structure, in particular to a three-dimensional shock-isolation structure of a small nuclear reactor. Background technique [0002] With the advancement of science and technology, the increase of energy demand and the increasing emphasis on environmental protection, clean and efficient nuclear power generation has become the focus of the development of countries all over the world. As we all know, nuclear power plant accidents will cause serious environmental pollution, heavy economic losses and severe social problems. In a sense, earthquake accidents in nuclear power plants are not allowed. Due to the randomness of earthquakes and the complexity of nuclear power plant systems, the seismic safety of nuclear power plants still faces great challenges. [0003] Different from conventional thermal power generation, under the action of an earthquake, a nuclear power plant must meet three basic safety functions, n...

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Problems solved by technology

However, no TMD technology has been applied to nuclear power plants alone or in combination

However, the research on the seismic isolation system of nuclear power plants is mainly based on horizontal isolation systems, and there is no systematic research, solution measures, and corresponding optimized structures for vertical isolation systems.

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