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A gripper and a gripping method for replacing detector components

A detector assembly and gripper technology, which is applied to reactor fuel elements, greenhouse gas reduction, reactors, etc., can solve problems such as increased environmental dose occupational exposure, low detector assembly efficiency, etc., to reduce the number of operators and reliability. High and efficient work effect

Active Publication Date: 2019-05-21
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the efficiency of replacing the existing detector components is low, and its close operation may easily cause the highly radioactive detector components to increase the environmental dose during the operation process and the occupational exposure of the operator. The purpose is to provide a A gripper and a gripping method for replacing a detector component, the gripper and the gripping method carry out gripping, lifting and transshipment of the detector component in a highly radioactive water environment through remote operations, reducing the number of operators, Reduces radiation dose to operators while improving detector assembly replacement efficiency

Method used

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  • A gripper and a gripping method for replacing detector components
  • A gripper and a gripping method for replacing detector components
  • A gripper and a gripping method for replacing detector components

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Embodiment 1

[0025] Such as Figure 4 As shown, a gripper for replacement of a detector assembly includes a gripper body 4, which is mainly composed of a sleeve 19, a support tube 20, a power mechanism 16 and a locking mechanism 22, wherein the power mechanism 16 is arranged above the sleeve 19 and connected with the sleeve 19. The sleeve 19 is sleeved outside the support cylinder 20 and can move along the outer wall of the support cylinder 20 under the action of the power mechanism 16, and the locking mechanism 22 follows the movement of the sleeve 19 It can be switched between the sleeve 19 and the support cylinder 20. The detector assembly can be grasped, lifted and transported in a high-radioactive water environment through remote operation. The grasping head of the multi-layer sleeve combined with the ball locking mechanism is used to grasp the detector assembly. The structure is simple and compact, which is suitable for the detector in a small space. Component to operate.

Embodiment 2

[0027] Such as Figure 1 to Figure 4 On the basis of embodiment 1, the hardware structure is: the power mechanism 16 is preferably a cylinder, the locking mechanism 22 is three steel balls, and the adjacent steel balls are arranged at 120°, and the piston rod of the cylinder is connected to the lower cylinder 18 Connected, the top of the support cylinder 20 passes through the lower cylinder 18 and is arranged in the lower cylinder 18, and the lower cylinder 18 and the sleeve 19 can move along the outer wall of the support cylinder 20 under the action of a cylinder. An upper cylinder 15 is provided above the lower cylinder 18. A number of guide rods are provided in the upper cylinder 15. The guide rods pass through the lower cylinder 18 and are connected to the top of the support cylinder 20. The top of the support cylinder 20 is equipped with a pneumatic indicator. For valve 17, the inner wall of the sleeve 19 is recessed to form three installation grooves one, the wall surface...

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Abstract

The invention discloses a gripper and a gripping method for replacing detector components. The gripper body is mainly composed of a sleeve, a support cylinder, a power mechanism and a locking mechanism. Under the action, it can move along the outer wall of the support cylinder, and the locking mechanism can switch between the sleeve and the support cylinder along with the movement of the sleeve. The design of the gripper of the detector component has been verified by three dimensions, and after the debugging and testing of the whole machine, various functions and performances meet the design requirements. The equipment has simple structure, high reliability, convenient operation and high work efficiency; Grab, lift and transfer the detector components in the high radioactive water environment, which reduces the number of operators and reduces the radiation dose received by the operators; it can be widely used in reactors where the neutron-temperature detector components are drawn from the top cover of the pressure vessel, It can be directly applied to the top of Hualong No. 1 series piles, and can also be used in Tianwan VVER type power station after partial improvement.

Description

Technical field [0001] The invention relates to a technology for refueling and overhauling a pressurized water reactor nuclear power plant, in particular to a gripper and a gripping method for replacing detector components. Background technique [0002] Compared with the M310 type power station, Fuqing Unit 5&6 is designed for the third generation nuclear power plant of Hualong No. 1 nuclear power plant. Compared with the M310 type power station, it adopts an advanced core measurement system, eliminates the opening of the pressure vessel bottom head, and improves safety. The neutron-temperature detector assembly introduced by the advanced core measurement system from the top cover of the reactor pressure vessel is affected by burnup. The replacement of the detector assembly needs to be considered after 2-3 refueling cycles. Although the Westinghouse AP1000 power station also uses similar detector components and needs to be replaced regularly, it does not use this type of replacem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/105G21C17/003
CPCG21C17/003G21C19/105Y02E30/30
Inventor 湛卉安彦波杨其辉李娜黄辉张翼蒋兴钧林振东任荷何鹏李燕余志伟王尚武
Owner NUCLEAR POWER INSTITUTE OF CHINA
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