Large hydraulic damper for supporting nuclear power station main device

Abstract

The invention provides a large hydraulic damper for supporting a nuclear power station main device. The large hydraulic damper for supporting the nuclear power station main device comprises a shell assembly, an oil cylinder, a piston or a piston rod, auxiliary oil cylinders, a fork-shaped pin head and a rear cylinder cover, wherein the shell assembly is provided with a containing cavity; the oil cylinder is contained in the containing cavity; the oil cylinder comprises a front cover plate and a rear cover plate which are connected through screws or bolts, and a gap is reserved between the front cover plate and the rear cover plate. The piston or the piston rod penetrates through the front cover plate, one end of the piston or the piston rod is contained in the gap, and the other end of the piston or the piston rod penetrates through the front cover plate and is located outside the gap. The auxiliary oil cylinders are symmetrically distributed on the periphery of the oil cylinder. The rear cylinder cover is installed on the shell assembly and provided with a joint bearing which is installed on the rear cylinder cover through a bearing pressing plate. The large hydraulic damper for supporting the nuclear power station main device can effectively prevent damage, caused by collision of external foreign matter, to main parts of the damper.

Description

technical field [0001] The invention relates to a large hydraulic damper for supporting main equipment of a nuclear power plant. Background technique [0002] The nuclear-grade large-scale hydraulic damper adopts the hydraulic principle, with the help of the mechanical structure and the specially designed hydraulic valve group, so that the hydraulic medium in the working chamber exhibits damping characteristics to the outside when it is subjected to external loads; when the supported equipment is under vibration (disturbance), earthquake or In accident conditions, the damping support with sufficient stiffness cannot be presented, so that the safe operation of the main nuclear power equipment cannot be guaranteed. [0003] Therefore, how to improve the stiffness of the damper has become an urgent problem to be solved. Contents of the invention [0004] Aiming at the deficiencies of the prior art, the invention proposes a large hydraulic damper for supporting main equipment...

AI Technical Summary

Problems solved by technology

[0002] The nuclear-grade large-scale hydraulic damper adopts the hydraulic principle, with the help of the mechanical structure and the specially designed hydraulic valve group, so that the hydraulic medium in the working chamber exhibits damping characteristics to the outside when it is subjected to external loads; when the supported equipment is under vibration (disturbance), earthquake or In accident conditions, the damping support with sufficient rigidity cannot be presented, so that the safe operation of nuclear power main equipment cannot be guaranteed

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