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A kind of fixing device and its application

A technology for fixing devices and components, applied in furnaces, heat treatment equipment, heat treatment furnaces, etc., can solve problems such as the gap between the electric heating plate and the shell, the inability to heat the shell, and the loss of control of the heating temperature, so as to ensure effectiveness and simple structure , The effect of easy disassembly

Active Publication Date: 2017-03-01
SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fixing device in the prior art is supported and fixed by a plate or a rod connected to the component. When the diameter of the annular gap is large, the expansion of the shell is more obvious when heated, and it is easy to cause the electric heating plate and the shell to swell during the heat treatment process. gap, so that the shell cannot be heated effectively, resulting in loss of control of the heating temperature

Method used

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  • A kind of fixing device and its application
  • A kind of fixing device and its application
  • A kind of fixing device and its application

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Embodiment Construction

[0030] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0031] Such as figure 1 , figure 2 and combine Figure 6 , Figure 7 As shown, a fixing device 100 is used to fix the electric heating plate 200 during the heat treatment of the annular seam of the nuclear power steam generator. The inner sleeve 400 is connected; several pushing components 102, the pushing components 102 pass through the support plate component 101, and press the electric heating plate 200, so as to reduce the gap between the electric heating plate 200 and the position to be heat treated .

[0032] Such as image 3 As shown, the pushing assembly 102 includes: a sleeve 1021, one end of which is connected to the support plate assembly 101; an adjusting cover 1022, arranged on the other end of the sleeve 1021; a pushing shaft 1023, the pushing shaft 1023 comprising The first part, the second ...

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Abstract

The invention discloses a fixing device used for fixing an electric heating plate during circumferential weld heat treatment of an electric steam generator. The fixing device comprises a support plate component and a plurality of pushing components; the pushing components penetrate the support plate component and has the electric heating plate pressed tightly; each pushing component comprises a sleeve with one end connected with the support plate component, an adjusting cover plate arranged at the other end of the sleeve, a pushing shaft including a first part, a second part, a third part and a fourth part which are connected in sequence, a retaining plate located in the sleeve and arranged at the joint of the first part and the second part of the pushing shaft, a spring arranged in the sleeve, sleeving the pushing shaft and located between the retaining plate and the adjusting cover plate and a hand drawing plate connected with the fourth part of the pushing shaft. By the arrangement that the electric heating plate is in tight contact with the inner wall of a shell, effectiveness in heating is guaranteed, and the fixing device is simple in structure, safe and reliable in fixing mode, and convenient and rapid to disassemble.

Description

technical field [0001] The invention relates to manufacturing equipment for nuclear power steam generators, in particular to a fixing device and its application. Background technique [0002] The partial heat treatment method is adopted for the heat treatment of the upper circular seam of the steam generator of the nuclear equipment vessel. During the partial heat treatment, an electric heating plate is installed on the inner wall of the circular seam, and the outer side of the electric heating plate is wrapped with thermal insulation cotton. In order to prevent the electric heating plate and the insulation cotton from falling off, a fixing device is installed outside the insulation cotton. The fixing device in the prior art is supported and fixed by a plate or a rod connected to the component. When the diameter of the annular gap is large, the expansion of the shell is more obvious when heated, and it is easy to cause the electric heating plate and the shell to swell during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/50
Inventor 李双燕徐超张茂龙
Owner SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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