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

Special internal clamp for thick-wall pipeline and manufacturing method thereof

A production method and technology of counterparts, applied in the direction of manufacturing tools, auxiliary devices, auxiliary welding equipment, etc., can solve the problems of reducing welding efficiency and re-heat treatment, so as to improve the preheating effect, save construction costs, and improve welding quality. Effect

Pending Publication Date: 2017-12-22
POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies of the existing technology, the first aspect of the embodiment of the present invention provides a special counterpart for thick-walled pipes, which effectively ensures the welding quality of the welding joint, so that the preheating temperature before welding can quickly reach the process temperature, avoiding It avoids the reduction of welding efficiency due to insufficient preheating temperature, and at the same time, it can ensure that the post-weld heat treatment of the weld joint is excellent at one time, avoiding the phenomenon of re-heat treatment

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
  • Special internal clamp for thick-wall pipeline and manufacturing method thereof
  • Special internal clamp for thick-wall pipeline and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0029] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0030] Terminology Explanation Section:

[0031] Large-diameter thick-walled pipes refer to pipes with a wall d...

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 discloses a special internal clamp for a thick-wall pipeline and a manufacturing method thereof. The internal clamp comprises a first semicircle part and a second semicircle part, wherein the first semicircle part and the second semicircle part forms a complete circle; the first semicircle part and the second semicircle part have the same structure and length and are formed by at least two layers of the pipelines; the first semicircle part and the second semicircle part are connected through a bolt fastening device; and the bolt fastening device is used for adjusting a tightness degree of the internal clamp. The welding quality of a welded junction is effectively ensured, and the preweld preheating temperature can quickly meet the process temperature.

Description

technical field [0001] The invention belongs to the field of pipeline heat treatment, and in particular relates to a special counterpart for thick-walled pipelines and a manufacturing method thereof. Background technique [0002] During the construction of large-diameter and thick-walled pipelines in power stations, due to the high content of alloy elements, electric heating must be preheated before welding. At present, according to technical regulations and construction experience, the site generally adopts medium and low-pressure pipelines according to the diameter of the construction pipeline. However, the on-site counterparts can be used for general pipelines, but are not suitable for pipelines that require electric heating and preheating. Due to the wide edge of the counterpart, it affects the electric heating preheating width of the welding joint and reduces the heating efficiency. and warm-up effect. [0003] In the welding technical regulations of thermal power plan...

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 Applications(China)
IPC IPC(8): B23K37/00
CPCB23K37/00
Inventor 王林张君发李汉华苗慧霞
Owner POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD