Nuclear-grade large equipment damper

Abstract

The invention belongs to the technical field of hydraulic shock-resistant supporting devices, and relates to a nuclear-grade large equipment damper. The damper solves the technical problems that the prior art is unreasonable in design and the like. A piston rod passes through a damping cylinder; a piston positioned in the damping cylinder is arranged on the piston rod; valve seats are respectively arranged at two ends of the damping cylinder; the two valve seats are respectively communicated with oil through holes at two ends of the damping cylinder; the two oil through holes are respectively communicated with a left chamber and a right chamber of the damping cylinder; valve cores, the outer ends of which are conical, are respectively arranged in the valve seats; throttling structures distributed symmetrically are arranged on the valve cores; springs for pressing the valve cores in the oil through holes are arranged between the valve cores and the valve seats; a connecting pipe is arranged between the two valve seats; an auxiliary cylinder is arranged at the outer side of the damping cylinder; and the auxiliary cylinder is connected with one of the valve seats. The damper has the advantages of reasonability in design, simple structure, high mechanical strength, stable working performance and capability of working normally for a long term even if the working environment is severe. The damper has good radiation resistance, and is easy in maintenance and convenient for changing a hydraulic medium.

Description

Technical field [0001] The invention belongs to the technical field of hydraulic anti-seismic support devices, and relates to a damper, in particular to a nuclear-level large-scale equipment damper. Background technique [0002] Large nuclear equipment dampers (nominal load> 500KN) are mainly used for anti-vibration support for nuclear safety first-class main equipment such as steam generators, main pumps, and main pipelines in nuclear power plants. The connection between these equipment and the fixed structure is to ensure the safety and stability of the main equipment when sudden loads such as earthquakes or pipeline ruptures are applied, and to protect nuclear power plant equipment from accidental load damage. The slow displacement caused by the expansion or contraction caused by the change does not produce obvious restraint effect. In order to improve the performance of nuclear-level large-scale equipment dampers, people have carried out long-term exploration and proposed...

AI Technical Summary

Problems solved by technology

[0004] Although the above scheme has improved the performance to a certain extent, there are still technical problems such as unstable working performance, low radiation resistance, and difficulty in adapting to harsh working environments.

Images