Dynamic limiting device for multi-point excitation seismic test of reactor control rod drive line

Abstract

The invention discloses a dynamic limiting device for multi-point excitation seismic test of a reactor control rod drive line. The dynamic limiting device comprises a sliding component, wherein the sliding component comprises an upper sliding supporting and connecting plate and a lower sliding supporting and connecting plate; the upper sliding supporting and connecting plate is connected with the lower sliding supporting and connecting plate via a sliding mechanism; a limiting body is mounted on the upper top surface of the upper sliding supporting and connecting plate and provided with a limiting hole allowing the end part of a driving mechanism to be inserted therein; one side surface of the upper sliding supporting and connecting plate is further connected with an actuator; the upper sliding supporting and connecting plate is located above the lower sliding supporting and connecting plate; the upper sliding supporting and connecting plate and the lower sliding supporting and connecting plate are connected in a Y-axis direction; the actuator is located at one side of the upper sliding supporting and connecting plate; the actuator and the upper sliding supporting and connecting plate are connected in an X-axis direction; the driving direction of the actuator is an X-axis direction; the inserting direction of the end part of the driving mechanism is perpendicular to the X-axis direction.

Description

technical field [0001] The invention relates to a limiting device for an anti-seismic test of a reactor control rod driving line, in particular to a dynamic limiting device for a multi-point excitation anti-seismic test of a reactor control rod driving line. Background technique [0002] Nuclear power plant reactor control rod drive line includes drive mechanism, upper guide cylinder, lower guide cylinder, fuel assembly, control rod assembly, etc. In nuclear power design, the key components contained in the control rod drive line are all anti-seismic Class I equipment, which need to operate normally during the base operation earthquake and be able to shut down the reactor during the safety shutdown earthquake, so the seismic performance of the control rod drive line is extremely important . [0003] Since the control rod driving line is associated with the reactor pressure vessel at multiple points, when an earthquake strikes, the driving line has seismic input at each asso...

AI Technical Summary

Problems solved by technology

[0004] At present, in the seismic test, the end limit of the driving mechanism generally adopts a fixed limit system. The fixed limit system is generally equipped with a fixed limit device, which maintains a fixed gap with the end of the drive mechanism. When the displacement of the end of the drive mechanism exceeds the fixed The fixed limit only limits the peak displacement of the end of the driving mechanism, which cannot meet the requirements of limiting the excessive displacement of the end of the driving mechanism in the seismic test of the reactor control rod drive line

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