Unlock instant, AI-driven research and patent intelligence for your innovation.

Pipe diameter expansion device and expansion cone used therefor

A technology of expansion cone and expansion block, applied in the field of expansion cone and expansion device, can solve problems such as pipe damage, size reduction, resistance, etc., and achieve the effect of improving expansion quality

Active Publication Date: 2018-01-23
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that after the pipe is expanded, the size of the nozzle will shrink under the action of stress, which makes the tapered expansion cone move halfway in the pipe and return to the original path. destroy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pipe diameter expansion device and expansion cone used therefor
  • Pipe diameter expansion device and expansion cone used therefor
  • Pipe diameter expansion device and expansion cone used therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] figure 1 The structure of a diameter expansion device 100 according to the present invention is shown. Such as figure 1As shown, the pipe diameter expansion device 100 includes a cylindrical seat 2, an elastic member 4 for bearing the driving force and an expansion cone 7 for implementing expansion. Wherein, a stress groove 101 is provided at the first end of the cylindrical seat 2 , and a bearing portion 102 is arranged at the second end; the elastic member 4 is installed in the stress groove 101 ; the expansion cone 7 is installed in the bearing portion 102 . In one embodiment, the elastic member 4 is a coil spring or a leaf spring. It should be understood that the diameter of the expansion cone 7 is larger than the inner diameter of the pipe material 9 to be expanded. Such as figure 1 As shown, the bearing part 102 can be implemented or configured as a right-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pipe diameter expansion device and an expansion cone used therefor. This expansion cone includes a front guide slope and a rear guide slope whose outer diameter gradually decreases toward the corresponding end, and a straight portion with a certain width between the front guide slope and the rear guide slope, the straight portion is the The area where the diameter of the expanding cone is the largest. The retracted nozzle section can be expanded again by using such an expansion cone.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an expansion device for expanding the inner diameter of a pipe. The invention also relates to an expansion cone for such an expansion device. Background technique [0002] In mechanical manufacturing, it is often necessary to expand parts of existing pipes to make them suitable for different purposes. [0003] The existing pipe expansion device includes: an expansion cone with an outer diameter larger than the inner diameter of the pipe, a force applying component is installed at the rear of the expansion cone, and an expansion cone limiting component is installed at the front. The expansion of the inner diameter of the pipe can be realized by applying a thrust on the force applying part to push the expansion cone to move forward into the pipe. [0004] The expansion cone in the prior art has a large end and a small end, and is generally tapered. It is only suitable for ent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21D39/08
Inventor 刘明谷磊郭朝辉邵志香李夯赵聪陈浩
Owner CHINA PETROLEUM & CHEM CORP