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A fetching tool of slant conveyor sleeve for spent fuel assembly

A technology for transporting aircraft and spent fuel, applied in the field of reactor engineering, to achieve the effect of convenient operation and simple structure

Active Publication Date: 2011-03-09
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the external gripping method, there needs to be enough space above and around the sleeve to accommodate the gripper

Method used

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  • A fetching tool of slant conveyor sleeve for spent fuel assembly
  • A fetching tool of slant conveyor sleeve for spent fuel assembly
  • A fetching tool of slant conveyor sleeve for spent fuel assembly

Examples

Experimental program
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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0022] The device mainly includes a lifting ring 7, a lifting lug 11, a nut 8, a core rod 1, a pipe 2, a pull rod 4, a steel ball 5, and a casing 6. Such as figure 1 In the shown structure, the lifting ring 7 is fixed on the lifting lug 11 through the pin shaft 10, the cylinder body 14 and the flange 12 are fixed on the lifting lug 11 by the screw 9, and the screw rod 13 is connected with the cylinder body 14 in a threaded manner. The nut 8 is connected to the core rod 1 in a threaded manner. The upper part of the core rod 1 is engraved with a scale for accurately indicating the position of the tie rod 4. The flange 12 presses the nut 8 to limit the upward displacement of the nut 8, and the nut 8 moves downward. The displacement is limited by the screw rod 13. The lifting lug 11 and the pipe 2 are integrally connected by welding. The casing 6...

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PUM

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Abstract

The invention discloses a fetching tool for slant conveyor sleeve for spent fuel assembly. The device comprises a hanger connecting with a lug through a hinge pin; a barrel and flange is fixed on the lug; one end of pipe is fixedly connected with the lug, another end is connected with a sleeve; core rod is positioned in the pipe; upper end of the core rod is threadingly connected with a screw nut, lower end is connected with a pull rod positioned in sleeve; the sleeve is provided with a groove hole for accommodating a steel ball; the groove hole is conical or spherical surface near the outer surface. The device has merits of simple structure, convenient operation and safety and reliability.

Description

technical field [0001] The invention relates to the technical field of reactor engineering, in particular to a dismounting tool used for tilting a conveyor sleeve of a spent fuel assembly. Background technique [0002] In the reactor, there are many operations on spent fuel assemblies. Most of the operating environments are radioactive. When replacing them, operators are not allowed to approach them. This must be done with special grippers. At present, it is understood that people cannot reach them. In the environment or location, placing or taking out cylindrical parts requires special tools, and the design of such tools is divided into the following two types: [0003] (1) Internal expansion structure [0004] In this structure, the elastic body is squeezed by the moving pull rod, and the elastic body deforms and expands tightly with the sleeve, and the sleeve is taken out by frictional force, otherwise it is placed. The device of this structure works by the frictional f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/06G21C19/32
CPCY02E30/30
Inventor 谷继品王长玲王明政吕云彪孙林志吴方杨孔雳孙刚靳峰雷李海于团结
Owner CHINA INSTITUTE OF ATOMIC ENERGY