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A fulcrum press for fuel rod cladding tubes

A technology of pressing machine and cladding tube is applied in the field of reactor engineering to achieve the effects of simple operation, high quality of fulcrum pressing and simple structure

Active Publication Date: 2017-05-03
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, no relevant reports have been found in the public literature

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  • A fulcrum press for fuel rod cladding tubes
  • A fulcrum press for fuel rod cladding tubes
  • A fulcrum press for fuel rod cladding tubes

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Embodiment Construction

[0024] The present invention will be further elaborated below in combination with the accompanying drawings and specific embodiments.

[0025] A fulcrum press for fuel rod cladding tubes, such as figure 2 and image 3 shown. The pressing machine mainly includes a bracket 7 and a self-centering three-jaw chuck 2 located on the bracket 7, a chuck core 4, an indenter fixing device, a conical indenter 3, a limit plate 1 and a support for cladding. The support plate 5 of the tube, the number of support plates 5 is 3; the three-jaw chuck 2 is fixedly connected with the chuck core 4, and the indenter 3 is fixed on the claw of the self-centering three-jaw chuck 2 through the indenter fixing device Above, the number of the indenter 3 and the indenter fixing device are three; the limit plate 1 is provided with an oblong hole, and the distance between the indenter and the lower end plug of the cladding tube can be adjusted according to the fulcrum pressing requirements.

[0026] The ...

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Abstract

The invention belongs to the technical field of reactor engineering and discloses a fulcrum pressing machine for a fuel rod cladding tube. The pressing machine mainly comprises a support, a three-jaw chuck, a chuck core, pressure head fixing devices, pressure heads, a limiting plate and a support plate, wherein the three-jaw chuck, the chuck core, the pressure head fixing devices, the pressure heads, the limiting plate and the support plate are positioned on the support; the three-jaw chuck is fixedly connected with the chuck core, and the pressure heads are fixed on the jaws of the three-jaw chuck through the pressure head fixing devices; both the number of the pressure heads and the number of the pressure head fixing devices are three, the pressure head fixing devices are connected with the three jaw parts of the three-jaw chuck through screw threads, and the chuck core is consistent with the center of the three-jaw chuck; the chuck core takes the shape of a hollow cylinder, and a contact plane used for limiting the pressing depth of the pressure heads is axially arranged on the outer wall of the cylinder in a cutting manner; a through hole convenient for the pressure heads to pass through is formed in the contact plane of the chuck core. The fulcrum pressing machine has the advantages of being high in fulcrum pressing quality, low in cost, simple in structure and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of reactor engineering, and in particular relates to a fulcrum pressing machine for cladding tubes of fuel rods. Background technique [0002] Nuclear fuel rod cladding tube fulcrum pressing is an important process in the fuel rod production process, and the position, size and depth of the fulcrum have its strict requirements. Each cladding tube needs to be pressed with 3 fulcrums, and the 3 fulcrums are evenly distributed along the radial direction of the cladding tube, and the shape of each fulcrum has strict requirements for diameter, depth, and distance from the lower end plug of the cladding tube. After pressing the fulcrum, the requirements There is no crack on the surface of the fulcrum, the strength of the cladding tube is not significantly reduced and the straightness of the cladding tube is not less than 1mm / m. At present, no relevant reports have been found in the open literature. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B3/04
CPCB30B3/045
Inventor 于团结王渊渊朱清陈辉张志鹏
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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