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Pipe expanding device and pipe expanding method thereof

A pipe string and pipe end technology, applied in the field of casing manufacturing system, can solve the problems of poor efficiency, low cost and high cost, and achieve the effects of improving quality and efficiency, convenient operation and simple structure

Inactive Publication Date: 2015-12-09
TIANJIN 20 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One is to use a lathe for processing, but the cost is higher; the other is to make it on site, the existing production method is low in cost but poor in efficiency

Method used

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  • Pipe expanding device and pipe expanding method thereof

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] as attached figure 1 As shown, a device for pipe expansion is composed of a device body, the device body includes an oil storage cylinder 1, the upper end of one side of the oil storage cylinder 1 is connected with a manual hydraulic pipe 2, and the lower end of one side of the oil storage cylinder 1 is connected to There is a high-pressure oil pipe 3, and the lower end of the high-pressure oil pipe 3 is connected with a hole expander 4, and the hole expander 4 is made of a tubular structure, and at least four uniformly distributed pipe expansion columns 5 are arranged on the outer wall of the hole expander 4.

[0018] The method for expanding the casing by using the above-mentioned device for expanding the tube includes the following steps: first. Prepare the above-mentioned device for pipe expansion; secondly, cut the steel pipe into a pipe end whose length i...

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Abstract

The invention discloses a pipe expanding device. The device is composed of a device body. The device body comprises an oil storage cylinder, wherein a manual hydraulic pipe is connected to the upper end of one side of the oil storage cylinder, a high-pressure oil pipe is connected to the lower end of the one side of the oil storage cylinder, a tapper is connected to the lower end of the high-pressure oil pipe, and at least four pipe expanding pillars are evenly distributed on the outer wall of the tapper. The invention further discloses a pipe expanding method. According to the method, the tapper of the pipe expanding device is sleeved with a pipe end in a certain length with a straight line cut on one side, the manual hydraulic pipe is pressed to pressurize the oil storage cylinder to enable oil in the oil storage cylinder to flow to the taper through the high-pressure oil pipe, the pipe expanding pillars evenly distributed on the outer wall of the taper are ejected out of the outer wall of the taper, and then the pipe end is expanded to be in a required size. The device is simple in structure, sleeve manufacturing quality is high, and the problem that a method for manufacturing a sleeve is poor in efficiency is solved.

Description

technical field [0001] The invention relates to a casing manufacturing system, in particular to a casing expansion device and a method for expanding the casing. Background technique [0002] The casing used for pipe-to-pipe connection is often used in actual field work. There are currently two methods of making the casing. One is to use a lathe for processing, but the cost is higher; the other is to make it on site, and the existing manufacturing method is low in cost but poor in efficiency. The specific production method is as follows: 1) Cut the steel pipe into a pipe section whose length is twice the diameter 2) Cut one side of the pipe section into a straight line with a grinder 3) Forcibly put the cut pipe section back on the steel pipe, which is the cutting mouth Expanded enough that it can easily move on the steel pipe. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a device an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D41/02B21D39/08
Inventor 李振欣管宇李刚马超
Owner TIANJIN 20 CONSTR