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Hammer

A hammer and sleeve technology, which is applied in the fields of nuclear reactor monitoring, reactors, nuclear power generation, etc., can solve the problems of unusable detection, and achieve the effects of avoiding resonance, tightening buffers, and easy and convenient detection work.

Active Publication Date: 2017-10-24
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hammer applied to solve the problem that the current signal of loose parts is generated by manual knocking, and this method cannot be used for detection during full power operation

Method used

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Embodiment

[0020] Such as Figures 1 to 2 As shown in the schematic diagram, the hammer device of the present invention includes a cylindrical base 1, and an arc-shaped seat plate 19 that matches the pipeline to be tested is arranged at the bottom of the base 1, and the two sides of the arc-shaped seat plate 19 are respectively Steel strips 20 are provided, and the fixing buckles 21 at the ends of the two steel strips are provided with matching bolts and nuts, and the steel strips are fixed on the pipe under test after the bolts and nuts cooperate; The performance of the welding material is no worse than ER316L. The steel strip 20 and the arc-shaped seat plate 19 are connected by 4 rivets and then welded. The steel strip 20 and the buckle are connected by 4 rivets and then welded. The 80mm steel belt 20 is bound on the main pipeline, the axis of the hammer mounting seat is perpendicular to the horizontal plane of the main pipeline, and a square hole is made in the insulation layer of the...

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PUM

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Abstract

The invention discloses a force hammer, comprising a base, a sleeve, a box body, and a lance. A hammer head is installed at the end of the lance in the base, and a lance shaft is arranged on the lance in the box. A lance bearing is installed on the rod shaft, and a stepping motor is arranged in the box, and the output end of the stepping motor drives a cam, and the cam and the lance bearing cooperate to drive the lance to move on its axis, and the lance in the sleeve There is a fixed spring seat on the top, a fixed boss is arranged in the sleeve, and a spring located between the spring seat and the boss is set on the lance, and the lance moves on its axis under the cooperation of the spring and the cam. Do back and forth motion. The invention can realize remote operation and control, does not need manual beating to generate impact signals, realizes the acquisition of analog signals of loose parts under full-load carrying conditions, does not affect normal production, and solves the problem of inability to detect during full-power operation.

Description

technical field [0001] The invention relates to an on-line detection tool for debugging and service life of a monitoring system for loose parts of a nuclear power plant, in particular to a force hammer. Background technique [0002] During the installation, commissioning or overhaul of nuclear power plant reactors, foreign parts may be brought into the reactor. On the other hand, in the long-term continuous operation of the reactor, some parts may become loose due to vibration or equipment aging. When the main circuit of the reactor moves with the flow channel, it will collide with the reactor vessel wall, pipe wall or internal components, seriously endangering the structural integrity of the internal structure of the reactor and the pressure boundary. Therefore, the second-generation or second-generation nuclear power plants currently in service and under construction in China have installed loose parts monitoring systems (LPMS for short), and the third-generation AP1000 nu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/017G21C17/00
CPCG21C17/001Y02E30/30
Inventor 杨泰波刘才学胡建荣李翔罗婷
Owner NUCLEAR POWER INSTITUTE OF CHINA
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