Forming and assembling method for arranging spiral heat tracing pipe on outer surface of thick-wall container barrel

The technology of the outer surface of the cylinder and the thick-walled container is applied in the field of manufacturing the preheating and thermal insulation structure of the shell of the pressure vessel, which can solve the problems of difficulty in fitting, difficult to guarantee the forming size, complicated forming of the bent pipe, etc., so as to achieve a simple forming process and reduce the difficulty of manufacturing. , to ensure the effect of preheating insulation effect

Active Publication Date: 2020-09-18
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve many problems in the manufacturing process of the spiral heat tracing pipe arranged on the outer surface of the existing thick-walled container cylinder, such as complicated elbow forming, difficulty in ensuring the forming size, and difficulty in fitting, and further provide a thick-walled container Forming and assembly method of spiral heat tracing pipe arranged on the outer surface of cylinder

Method used

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  • Forming and assembling method for arranging spiral heat tracing pipe on outer surface of thick-wall container barrel
  • Forming and assembling method for arranging spiral heat tracing pipe on outer surface of thick-wall container barrel
  • Forming and assembling method for arranging spiral heat tracing pipe on outer surface of thick-wall container barrel

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specific Embodiment approach 1

[0039] Specific implementation mode one: combine Figure 2 to Figure 7 To illustrate this embodiment, the method for forming and assembling a spiral heating pipe arranged on the outer surface of a thick-walled container cylinder in this embodiment includes the following steps:

[0040] Step 1: First draw four centerlines, the position line of the inlet and outlet of the heating pipe and the spiral line on the outer surface of the cylinder body 1;

[0041] Step 2: Turn the roller frame 4 so that the bending position is at the lowest point, leave enough margin for one end of the pipe used to bend into the heat tracing pipe 2 according to the extension direction of the marked helix and weld it firmly with the cylinder body 1, And move the backing device 3 to the side below the cylinder body 1;

[0042] Step 3: Rotate the roller frame 4, and at the same time, the operator holds one end of the pipe, moves the pipe and the backing device, so that the pipe is wound on the cylinder b...

specific Embodiment approach 2

[0049] Specific implementation mode two: combination Figure 7 This embodiment will be described. In this embodiment, before step 1 is performed, the cylinder body 1 is hoisted and placed on two roller frames 4 with proper spacing. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0050] Specific implementation mode three: combination Figure 7 To illustrate this embodiment, the steps of drawing the helical line of the heat tracing pipe 2 on the outer surface of the cylinder 1 in step 1 of this embodiment are as follows:

[0051] Step 11: Draw four centerlines on the outer surface of the cylinder body 1;

[0052] Step 1 and 2: According to the design drawings, draw the inlet and outlet position lines of the heat tracing pipe 2 on the outer surface of the cylinder body 1;

[0053] Step 1 and 3: According to the design drawing, draw the position line of the heat tracing pipe 2 on the outer surface of the cylinder body 1 using a double helix line.

[0054]Such setting ensures that the winding position of the heat tracing pipe 2 can meet the design requirements when winding. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a forming and assembling method for arranging a spiral heat tracing pipe on the outer surface of a thick-wall container barrel, and relates to a forming and assembling method for the heat tracing pipe. The problems that in a manufacturing process of an existing spiral heat tracing pipe, bent pipe forming is complex, the forming size is difficult to guarantee, and sleeving is difficult are solved by the forming and assembling method. The method comprises the following steps that 1, the outer surface of a cylinder is scribed; 2, a roller carrier rotates and enables the bending position to be at the lowest point, and a supporting cushion device is moved to the side lower part of the barrel; 3, before the heat tracing pipe is wound, enough allowance is reserved at the inlet end, and the heat tracing pipe is firmly welded to the barrel, the roller carrier is started, one end of the pipe is held simultaneously by an operator to move the pipe and the supporting cushiondevice, so that the pipe is spirally wound around a cylinder body; 4, the pipe is continuously wound, the tail end of the pipe is lengthened when the tail end of the pipe is not long enough, and thesteps 3 and 4 are repeated; 5, gas cutting is performed on the allowance and a groove of the inlet and outlet end of the tracing pipe; and 6, the inlet and outlet end of the tracing pipe is bent and formed. The forming and assembling method is used for forming and assembling the heat tracing pipe.

Description

technical field [0001] The invention relates to a forming and assembly method. Specifically relates to a forming and assembling method for arranging spiral heat tracing pipes on the outer surface of a thick-walled container cylinder, and belongs to the manufacturing field of preheating and heat preservation structures for pressure vessel shells. Background technique [0002] This structure is relatively rare for the spiral heat tracing tube arranged on the outer surface of the thick-walled container. For design drawings, see figure 1 , on the outer surface of the nearly 20-meter-long cylinder (specification Di2800, δ68, material Q345R), dense spiral heat tracing pipes (specification φ27×4, material 20) are evenly distributed at a certain interval. In addition, there are connecting pipes, lifting lugs and other accessories on the outer surface of the cylinder. If the spiral heating pipe adopts the conventional method of bending first and then fitting, not only the forming ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 张印江王新红李文静
Owner HARBIN BOILER
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