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Shielding structure and shielding system for dismounting reactor detector assembly and using method

A detector assembly and shielding structure technology, which is applied in the direction of reactor fuel elements, reactors, and greenhouse gas reduction, can solve the problem of no patent application for detector assembly shielding structure, and achieve the effect of small weight, high work efficiency, and exquisite structure

Active Publication Date: 2021-01-22
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, there is no patent application for the shielding structure during the dismantling of the detector assembly at home and abroad

Method used

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  • Shielding structure and shielding system for dismounting reactor detector assembly and using method
  • Shielding structure and shielding system for dismounting reactor detector assembly and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as figure 1 , figure 2 as shown,

[0053] The direction on which the present invention is based is described as follows:

[0054] Take looking down on a flat paper as an example,

[0055] Left, left, and left ends are located on the left of a sheet of paper; right, right, and right ends are located on the right of a sheet of paper; upper, upper, and upper ends are located above a sheet of paper; Located on the left side of a piece of paper, the front, front side, and front end are located in front of a piece of paper (facing the direction of the paper), and the back, rear side, and rear end are located behind a piece of paper (facing away from the paper) direction).

[0056] Such as figure 1 , figure 2 Schematic side view of the shielding structure for removal of the reactor detector assembly.

[0057] The subsequent front and back refer to the direction facing the legend paper and the direction facing away from the paper as shown in the figure.

[0058] ...

Embodiment 2

[0082] Such as figure 1 , figure 2 Shown:

[0083] Shielding system, including:

[0084] Based on the shielding structure for removal of the reactor detector assembly;

[0085] The shearing cutter 308 located under the left shield 3048A and the right shield 3048B;

[0086] a winding shaft 311 located below the shearing knife 308;

[0087] The detector assembly gripper that pulls the detector assembly from bottom to top;

[0088] From bottom to top, the detector assembly passes through the winding shaft 311 , the shearing tool 308 , the left shield 3048A, and the right shield 3048B.

Embodiment 3

[0090] Such as figure 1 , figure 2 Shown:

[0091] The method of use includes the following steps:

[0092]S2. Drive the driving body A or / and driving body B through the actuator, drive the left shielding body 3048A to rotate leftward around the left shielding shaft 3049A, and the right shielding body 3048B to rotate rightward around the right shielding shaft 3049B, and the left shielding body 3048A 1. The gap between the shielding body 3048B on the right side is opened;

[0093] S2. Hoist the detector assembly upwards by the detector assembly gripper, and turn to S3 after the detector assembly passes between the left shield body 3048A and the right shield body 3048B and reaches a certain height;

[0094] S3, start the shearing tool 308 to cut off the detector assembly;

[0095] S4. Lift out the detector assembly placed between the left shield body 3048A and the right shield body 3048B by the detector assembly gripper;

[0096] S5. Drive the driving body A or / and driving...

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Abstract

The invention discloses a shielding structure and a shielding system for dismounting a reactor detector assembly and a using method, a left shielding body and a right shielding body are arranged in aleft-right layout form, when an actuator is in driving connection with a driving body A or / and a driving body B, the left shielding body and the right shielding body are driven to rotate around a leftshielding shaft and a right shielding shaft respectively; when the detector assembly is grabbed, the left side shielding body and the right side shielding body are driven to rotate reversely, so thata gap capable of passing through the detector assembly gripper and the detector assembly is formed between the left side shielding body and the right side shielding body;after the detector assembly is lifted to a certain height by the detector assembly gripping apparatus; the detector assembly is sheared off by using a shearing tool; and at the moment, the left side shielding body and the right side shielding body are driven to rotate oppositely, and the gap between the left side shielding body and the right side shielding body is closed to form an integral shielding structure.

Description

technical field [0001] The invention relates to the technical field of dismantling of reactor equipment, in particular to a shielding structure for dismantling a reactor detector assembly, a shielding system and a use method. Background technique [0002] The Hualong No. 1 nuclear reactor adopts an advanced core measurement system. Compared with the M310 type power station, the opening of the bottom head of the pressure vessel is cancelled, which improves safety. The neutron-temperature detector assembly introduced from the top cover of the reactor pressure vessel in the advanced core measurement system is affected by the burnup, and the overall replacement of the detector assembly needs to be considered after 2 to 3 refueling cycles. Although the AP1000 power station uses similar detector components and needs to be replaced regularly, no relevant replacement equipment has been found. Before the present invention, the Russian VVER-1000 stack type (the stack type used by Tia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/02G21C19/105G21C19/20
CPCG21C19/02G21C19/105G21C19/207Y02E30/30
Inventor 湛卉杨其辉安彦波唐松乾肖锋李兰余志伟李娜熊思勇黄宗仁穆伟董岱林王尚武李燕王炳炎
Owner NUCLEAR POWER INSTITUTE OF CHINA
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