Distortion correction method for heat transfer panel, distortion correction support system, and correction program
A support system and panel technology, applied in the field of strain correction of heat transfer panels, strain correction support system and correction program, which can solve the problems of complex equipment, large size, and time required for correction
Active Publication Date: 2019-07-23
MITSUBISHI POWER LTD
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Problems solved by technology
[0011] However, in the conventional method, the mastery and correction of the strain are carried out based on the feeling and experience of skilled workers, and the number of operators who can carry out the strain correction work is limited.
In addition, correction takes time, and strain measurement and correction may be repeated
[0012] In addition, in the invention disclosed in the above-mentioned Patent Document 1, it is necessary to move the gas burner in conjunction with the movement of the welding burner, and there is a problem that the apparatus is complicated and enlarged.
[0013] In addition, in the invention disclosed in the above-mentioned Patent Document 2, it is necessary to perform fillet welding in anticipation of the strain due to build-up welding and the bending due to fillet welding, and there is a problem that the skill of the operator greatly affects the accuracy.
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[0064] Hereinafter, embodiments of a strain correction method for a heat transfer panel, a strain correction support system for a heat transfer panel, and a strain correction program for a heat transfer panel according to several embodiments of the present invention will be described with reference to the drawings. In addition, in each embodiment, an upper surface means the surface which faces the upper side in a vertical direction, and a lower surface means a surface which faces the lower side in the vertical direction.
[0065] figure 1 A schematic diagram of a fillet weld of a heat transfer panel is shown in .
[0066] like figure 1 As shown, a heat transfer panel 10 used, for example, on a wall of a boiler or the like is composed of heat transfer tubes called tubes 11 and fins 12 . The tube 11 is a hollow columnar tube through which fluid such as water or steam flows. In addition, the fin 12 is a flat metal, and its thickness is, for example, about 3 to 8 mm. The tube ...
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Abstract
The invention aims to provide a distortion correction method for a heat transfer panel which accurately corrects distortion of a heat transfer panel. A method for correcting the distortion of a heat transfer panel (10) which is formed into a panel shape by a fin (12) which is arranged side by side in the width direction of a plurality of tubes (11) extending in the longitudinal direction and is connected by welding between each tube (11), and which measures the shape of a heat transfer panel (10) using a 3-dimensional measuring instrument (40). A distortion shape specifying step of specifyinga shape of the strain from the measured shape of the heat transfer panel (10); a correction point determination step for determining a correction point for performing a distortion correction operationfrom the shape of a specified distortion and a heating step for heating the determined correction point to correct the distortion are provided, and a correction point determination step determines acorrection point in the width direction and the longitudinal direction of the heat transfer panel (10), respectively.
Description
technical field [0001] The invention relates to a strain correction method for a heat transfer panel, a strain correction support system for a heat transfer panel, and a strain correction program for a heat transfer panel. Background technique [0002] Panels called heat transfer panels are used in boiler furnace walls and the like. The heat transfer panel in its manufacturing process such as figure 1 In this way, long tubes (heat transfer tubes) and fins are joined by fillet welding. Also, if figure 2 In that way, wear-resistant materials and corrosion-resistant materials are used for overlay welding in a part of the area. Deformation (strain) occurs in the heat transfer panel due to heat input due to welding based on these assembling. In order to correct this strain, various methods have been studied. [0003] Conventionally, the panel is installed on a horizontal platform, and the strain in the width and length directions is measured and grasped visually or by using...
Claims
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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 佃浩平
Owner MITSUBISHI POWER LTD