Pipe end seal method

A pipe end and sealing technology, which is applied in the field of sealing and welding after bending the pipe end inward

Inactive Publication Date: 2006-07-19
ZEHNDER CHINA INDOOR CLIMATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a pipe end sealing method for existing pipe end sealing methods and pipe defects, which can save time cost and economic cost

Method used

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Experimental program
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Embodiment Construction

[0025] The present invention bends the pipe end inward before sealing the pipe end, and then seals the pipe without grinding. The pipe produced in this way saves cost.

[0026] Such as image 3 Shown, be the flow chart of pipe end sealing method of the present invention, comprise the steps:

[0027] Step 101, bending the circumference of the pipe wall of the pipe port to the direction of the pipe axis to form a smooth curved surface on the outside of the pipe, and the section of the pipe end and the axis form an included angle θ;

[0028] join Figure 4 As shown, it is a structural schematic diagram of the present invention, the angle θ between the section 11 of the pipe end 10 of the pipe 1 and the axis can be between 15 degrees and 80 degrees, depending on the needs of manufacturing; the pipe 1 can be a round pipe Or an elliptical tube, there may be a threaded connection hole 20 on the cover 2, and the tube 1 and the cover 2 are steel or stainless steel or brass or aluminu...

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Abstract

The invention discloses a closing method of pipe end, which comprises the following steps: stamping the closing lid to deform with the closing lid edge inwards; forming smooth curve plane on the periphery of closing lid; displaying separation angle of cross section of closing lid and pipe axle ranged from 15 to 80 deg; welding the closing lid and stepped cut cross section together. The pipe and welding touch of closing lid is linear touch or plane touch. The pipe is round pipe, elliptic pipe or other shapes. The closing lid contains screw connection hole. The pipe and lid is steel or stainless steel or brass or aluminum alloy. The welding is argon arc spot welding or resistance welding or brazing welding. The invention bends the pipe end inwards to close without polishing the welding part and pien, which reduces the time and cost.

Description

technical field [0001] The invention relates to a pipe end sealing method, in particular to a method of sealing and welding the pipe end after inward bending. Background technique [0002] With the development of the times, pipes are used in more and more fields in life and work, and the amount of use is increasing. Therefore, how to manufacture pipes quickly and efficiently has become an important issue before people. [0003] In the manufacture of pipe fittings, all pipes are used, and the pipes are usually not sealed, so it is often necessary to seal the end of the pipe, especially the pipe with a relatively large diameter, because the sealing of the pipe with a small diameter is more convenient and fast, but for relatively small diameter pipes Larger tubes require more complex sealing operations, such as figure 1 and figure 2 Shown is the structural diagram of the existing pipe end sealing method, the existing pipe sealing method is to directly weld or braze a flat pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B23K9/028B23K11/093B23K1/18
Inventor 郭占庚
Owner ZEHNDER CHINA INDOOR CLIMATE
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