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Nondestructive testing device for reactor control rod guide cylinder and guide card

A non-destructive testing and control rod technology, which is used in reactors, nuclear reactor monitoring, nuclear power generation, etc. to avoid the risk of jamming, reduce size, and improve safety.

Active Publication Date: 2019-01-04
CGNPC INSPECTION TECH +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing detection method is contact type, and the risk of jamming that may occur between the detection equipment and the guide card of the control rod guide cylinder

Method used

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  • Nondestructive testing device for reactor control rod guide cylinder and guide card
  • Nondestructive testing device for reactor control rod guide cylinder and guide card

Examples

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Embodiment Construction

[0014] Below in conjunction with the embodiment shown in the accompanying drawings, the present invention is described in detail as follows:

[0015] Such as figure 1 , 2 As shown, the reactor control rod guide cylinder guide card non-destructive testing device includes a video system 19, an axial movement mechanism and a circumferential movement mechanism for driving the video system 19 to move axially and circumferentially.

[0016] The axial movement mechanism includes a mountain fixing seat 1, a profile 7 whose upper end is fixedly connected with the mountain fixing seat 1 and extends parallel to the axial direction, and a lower fixing seat 9 that is fixedly connected with the lower end of the profile 7 , the rack tube 6 slidably connected to the lower fixing seat 9, the axial gear assembly mounted on the profile 7 and meshed with the rack tube 6, used to drive the axial gear assembly to rotate The axial motor 8 and the axial limit assembly. The axial limit assembly inc...

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Abstract

The invention discloses a reactor control rod guide cylinder guide card nondestructive testing device which comprises a video system, an axial movement mechanism and a circumferential movement mechanism, wherein the axial movement mechanism is used for driving the video system to axially motion, and the circumferential movement mechanism is used for driving the video system to circumferentially motion. The axial movement mechanism comprises an upper fixed seat, a lower fixed seat, a rack pipe, an axial gear component and an axial motor, the upper end of the lower fixed seat is fixedly connected with the upper fixed seat, the lower fixed seat is parallel to an axial extending profile and fixedly connected with the lower end of the profile, the rack pipe is slidably connected on the lower fixed seat, the axial gear component is mounted on the profile and engaged with the rack pipe, the axial motor is used for driving the axial gear component to rotate, and the video system is fixedly connected at the lower end of the rack pipe and arranged in the circumferential movement mechanism in a penetrating manner. According to the device, automatic nondestructive testing of a reactor controlrod guide cylinder guide card is achieved, and possible jamming risks between a testing device and the control rod guide cylinder guide card are avoided.

Description

technical field [0001] The invention relates to the field of nuclear power detection equipment, in particular to a non-destructive detection device for a reactor control rod guide cylinder guide card. Background technique [0002] The main function of the nuclear power plant reactor control rod guide tube guide card (CRGT) is to guide the stepping motion of the control rod cluster (RCCA) to ensure that the rod drop time meets the nuclear safety requirements. Feedback from French EDF’s nuclear power plant operation experience shows that in recent years, some RCCA components of its 900MW unit have experienced increased rod drop time, which is believed to be caused by CRGT wear. After that, EDF replaced three sets of components and Destruction tests, metal analysis were performed, and wear was found on both the guide plate and the continuous section. Operating experience shows that the wear of CRGT mainly occurs in the hole, ligament area, and opening position of the internal ...

Claims

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Application Information

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IPC IPC(8): G21C17/10
CPCG21C17/10Y02E30/30
Inventor 吴健荣张鹏飞马超费瑞银程伟曾晨明牟浩汪双印束家龙杨乾飞洪茂成
Owner CGNPC INSPECTION TECH
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