Tube sheet annular heating correction method
A tube sheet and annular technology, which is applied in the field of tube sheet annular heating and correction, can solve the problems of complicated process, high production cost, change of tube sheet, etc., and achieve the effect of simple operation process and low production cost.
Active Publication Date: 2016-08-24
廊坊广厦新源石化设备制造有限公司
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- Application Information
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Problems solved by technology
However, the inside of the tube sheet pressed by this processing method will change, and there will be uneven internal stress. In order to eliminate internal stress and uniform structure, heat treatment is required
Moreover, the tube sheet leveling method in the prior art has a relatively complicated process, and the required production cost is relatively high
Method used
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Embodiment Construction
[0019] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0020] The application provides a method for rectifying tube sheet annular heating, which includes the following steps:
[0021] Step A: Dividing the raised side of the tube sheet into several uniform annular areas by a plurality of concentric annular lines;
[0022] Step B: Heat the tube sheet successively along multiple annular lines from the radially outer side of the tube sheet to its center position, and perform cooling treatment after heating along each ring line, and then proceed to the next round of heating .
[0023] In step A, several uniform annular regions mean that the widths between the annular regions are the same. Preferably, the raised side of the tube sheet is divided into four annular regions with the same width.
[0024] In step B, the tube sheet is heated circle by circle alo...
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Abstract
The invention relates to the technical field of metal material processing, in particular to a tube plate annular heating correction method. The tube sheet annular heating correction method includes the following steps: Step A: Divide the raised side of the tube sheet into several uniform annular areas through a plurality of concentric annular lines; The tube sheet is heated successively along a plurality of circular lines, and cooling treatment is performed after heating along each circular line, and then the heating of the next circle is performed. In this application, by using the principle of thermal expansion and contraction to heat and cool the tube sheet turn by turn, the internal stress of the tube sheet can be released, and the stresses on both sides of the tube sheet can be equalized, thereby achieving the purpose of leveling the tube sheet. Moreover, the tube sheet leveling method has simple operation process and low production cost.
Description
technical field [0001] The invention relates to the technical field of metal material processing, in particular to a tube plate annular heating correction method. Background technique [0002] At present, our country is in the period of national economic development, and there is a great demand for chemical products, such as polyethylene, polypropylene, etc. These products require a large number of chemical pressure vessels (such as towers, reactors, storage tanks, heat exchangers, condensers, cooling devices, etc.) are refined. Among them, the heat exchanger, condenser, and cooler are made of shell, tube sheet, and heat exchange tube through welding, expansion joint, pressure test and other processes. At present, the surfacing deformation of the tube sheet has become an important problem to be solved. Due to the uneven heating and cooling temperature during the surfacing and compounding process, the tube sheet will produce a large amount of deformation, which will lead to ...
Claims
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IPC IPC(8): B21D3/00
Inventor 韩军叶文宝刘彦青
Owner 廊坊广厦新源石化设备制造有限公司