CN109773402B - Annular gasket device for welding small-caliber pipeline - Google Patents
Annular gasket device for welding small-caliber pipeline Download PDFInfo
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- CN109773402B CN109773402B CN201910236451.8A CN201910236451A CN109773402B CN 109773402 B CN109773402 B CN 109773402B CN 201910236451 A CN201910236451 A CN 201910236451A CN 109773402 B CN109773402 B CN 109773402B
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Abstract
An annular gasket device for welding small-caliber pipes. The annular gasket device is mainly used for improving the welding quality when a small-diameter pipeline is welded. The method is characterized in that: the device also comprises a sealing plug, a liner pressure ring, an annular liner, a liner support cylinder, a pry bar bracket, a pry bar wrench, a support push ring, a long connecting cylinder, a push-pull handle and an air compressor; the sealing plug is used for plugging the front end of the long connecting cylinder; the gasket compression ring is used for compressing the annular gasket; the annular gasket is used for plugging the welding groove part; the outer wall of the liner support cylinder is used for mounting an annular liner and a liner pressure ring, and the inner wall of the liner support cylinder is used for mounting the long connecting cylinder; the prying bar wrench is used for pushing the supporting push ring after welding is finished; the supporting push ring is fixed on the long connecting cylinder through a jackscrew standard part; the long connecting cylinder is used for installing a sealing plug, spraying cooling air, installing a push-pull handle and connecting a rubber tube of an air compressor; the push-pull handle is used for blocking the tail passage of the long connecting cylinder.
Description
Technical Field
The invention relates to a device used in welding operation, in particular to a liner device used in the welding of small-diameter pipelines.
Background
The use of a weld pad can greatly improve the quality of the weld. At present, pipeline welding mouth-aligning devices with gasket parts are developed at home and abroad, and the gasket technology is applied to the welding process of large-diameter pipelines. However, the pipe welding aligner with the gasket part is not suitable for welding small-diameter pipes. This is because the small-bore pipeline welding has a narrow radial space, and therefore, a pipeline welding butt joint device with a complicated structure cannot be installed. At present, no mature gasket device is developed in the welding process of the small-diameter pipeline.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a liner device used in the welding construction of a small-caliber pipeline, which has a simpler structure, can improve the welding quality and is convenient to disassemble and assemble in the pipeline welding process.
The technical scheme of the invention is as follows: the annular gasket device for welding the small-caliber pipeline comprises conventional parts such as a pin shaft and a plurality of jackscrews, and is characterized in that: the device also comprises a sealing plug, a liner pressing ring, an annular liner, a liner support cylinder, a pry bar support, a pry bar wrench, a support push ring, a long connecting cylinder, a push-pull handle and an air compressor.
The shape of the sealing plug is a cylinder with external threads, and a small section of quadrangular prism is arranged at the end part of one side of the sealing plug so as to facilitate the disassembly of a wrench; the sealing plug is used for plugging the front end of the long connecting cylinder.
The gasket compression ring is in the shape of a short cylinder with an inner thread on the inner wall and a conical chamfer on the outer wall, is arranged at the front end of the gasket support cylinder and is used for compressing the annular gasket fixed on the gasket support cylinder; the outer diameter of the gasket pressing ring is smaller than that of the steel pipe to be welded.
The annular gasket is in a short cylindrical shape and is sleeved on the gasket support cylinder, and the outer diameter of the annular gasket is in small clearance fit with the inner diameter of the steel pipe to be welded and is used for plugging the welding groove part of the inner wall of the steel pipe to be welded.
The outer diameter of the liner support cylinder is also smaller than that of a steel pipe to be welded, the liner support cylinder is in a longer cylindrical shape, the front end of the outer wall of the liner support cylinder is provided with threads for mounting an annular liner and a liner pressing ring, the rear end of the inner wall of the liner support cylinder is provided with internal threads for mounting the liner support cylinder on the long connecting cylinder, the front end of the inner wall of the liner support cylinder is reamed, and an annular cavity is formed with the front end of the long connecting cylinder and used as a flow channel of cooling gas.
The pry bar support is annular and is sleeved at the tail end of the steel pipe to be welded, a threaded hole is formed in the side face of the pry bar support, and the pry bar support is fixed on the steel pipe through a jackscrew standard component; a pair of support lugs is welded on the upper portion of the pry bar support, and the pry bar wrench is installed on the pry bar support through a pin shaft.
The prying bar wrench is in a longer rod shape, a pin hole is formed near the front end of the prying bar wrench, and the prying bar wrench is installed on the prying bar support through a pin shaft; after welding, a pry bar wrench is pulled to push the support push ring, and the annular gasket is pushed away from the welding seam part through a long connecting cylinder and other parts.
The supporting push ring is annular and is sleeved at the rear part of the long connecting cylinder, and a threaded hole is formed in the side surface of the prying rod push ring and is fixed on the long connecting cylinder through a jackscrew standard component; a narrow-strip boss extends from the lower part of the pry rod push ring and is used for supporting and positioning the axial position of the gasket device in the steel pipe.
The long connecting cylinder is in a long and thin tubular shape, and the length of the long connecting cylinder is slightly longer than that of the steel pipe to be welded; a threaded hole is formed in the front end of the long connecting cylinder and used for installing a sealing plug, and a plurality of small holes are formed in the side face of the part, away from the threaded hole, of the front end of the long connecting cylinder and used for spraying cooling air; the tail end of the long connecting cylinder is provided with a threaded hole for installing a push-pull handle, and a small steel pipe is welded on the side surface of the tail end away from the threaded part and is used for connecting a rubber pipe of an air compressor.
The push-pull handle is T-shaped, external threads are processed at the head of the push-pull handle, the push-pull handle is installed at the tail end of the long connecting cylinder to block a tail passage of the long connecting cylinder, and the push-pull handle pushes the liner device to move in and out of the steel pipe.
The air compressor is communicated with the long connecting cylinder through a rubber pipe and is used for blowing compressed air after welding is completed and cooling the annular gasket part.
The invention has the following beneficial effects: firstly, the annular gasket device has small radial size, can be suitable for welding small-caliber pipelines and can improve the welding quality of the small-caliber pipelines; secondly, the liner device has simple structure, few parts and low production cost; in addition, the gasket device is simple and convenient to use and operate, and is convenient to disassemble and assemble in the pipeline welding process.
Description of the drawings:
FIG. 1 is a cross-sectional view of a gasket device according to the present invention;
FIG. 2 is a cross-sectional view of the gasket assembly of the present invention installed in a conduit;
FIG. 3 is a cross-sectional view of the liner assembly of the present invention shown withdrawn after welding;
FIG. 4 is a cross-sectional view of the elongated connector of the present invention;
FIG. 5 is a front view in section of the support collar of the present invention;
FIG. 6 is a left side view of the support collar of the present invention;
FIG. 7 is a cross-sectional view of a cushion cartridge according to the present invention;
FIG. 8 is a cross-sectional view of the gasket compression ring of the present invention;
FIG. 9 is a cross-sectional view of the annular gasket of the present invention;
FIG. 10 is a front view of the push-pull handle of the present invention;
FIG. 11 is a front view of a closure plug according to the present invention;
FIG. 12 is a front view in cross-section of the pry bar bracket of the present invention;
FIG. 13 is a left side view of the pry bracket of the present invention;
FIG. 14 is a front view of the crowbar wrench of the present invention;
fig. 15 is a top view of the pry wrench of the present invention.
In the figure: 1-sealing plug; 2-lining a pressure ring; 3-an annular gasket; 4-a liner support; 5-a crowbar support; 6-crowbar wrench; 7-supporting the push ring; 8-long connecting cylinder; 9-push-pull handle; 10-air compressor rubber tube; 11-a steel tube to be welded; 12-weld seam.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 15, the invention provides a gasket device used in the welding construction of a small-bore pipeline, which has a simple structure and is convenient to assemble and disassemble in the welding process of the pipeline.
The technical scheme adopted by the invention for solving the technical problems is as follows: the device comprises a sealing plug, a liner pressing ring, an annular liner, a liner support cylinder, a pry bar support, a pry bar wrench, a support push ring, a long connecting cylinder, a push-pull handle, ten main parts of an air compressor, a pin shaft, a jackscrew and other common parts and standard parts.
The sealing plug is used for sealing the front end of the long connecting cylinder and is in the shape of an external thread cylinder, and a small quadrangular section is arranged at the end part of one side of the sealing plug so as to facilitate the screwing off of a wrench.
The outer diameter of the liner compression ring is smaller than that of a steel pipe to be welded, the liner compression ring is in the shape of a short cylinder with an inner thread on the inner wall and a conical chamfer on the outer wall, and the short cylinder is mounted at the front end of the liner support cylinder and used for compressing and fixing the inner annular liner.
The annular liner is made of copper alloy or ceramic materials, is in a short cylindrical shape, is sleeved on the liner support cylinder, and is in small clearance fit with the inner diameter of the steel pipe in the outer diameter for plugging the welding groove part of the inner wall of the steel pipe.
The outer diameter of the gasket support cylinder is smaller than that of the steel pipe to be welded, the gasket support cylinder is in a longer cylindrical shape, and the front end of the outer wall of the gasket support cylinder is provided with threads for mounting an annular gasket and a gasket pressing ring; the rear end of the inner wall is provided with internal threads for mounting on the long connecting cylinder, and the front end of the inner wall is reamed to form an annular cavity with the front end of the long connecting cylinder for a flow passage of cooling gas.
The pry bar support is annular and is sleeved at the tail end of the steel pipe to be welded, a threaded hole is formed in the side face of the pry bar support, and the pry bar support is fixed on the steel pipe through a jackscrew standard component; a pair of support lugs is welded on the upper portion of the pry bar support, and the pry bar wrench is installed on the pry bar support through a common pin shaft piece.
The prying bar wrench is in a longer rod shape, a pin hole is formed near the front end of the prying bar wrench, and the prying bar wrench is installed on the prying bar support through a pin shaft; after welding, a pry bar wrench is pulled to push the support push ring, and the annular gasket is pushed away from the welding seam part through a long connecting cylinder and other parts.
The supporting push ring is annular and is sleeved at the rear part of the long connecting cylinder, and a threaded hole is formed in the side surface of the prying rod push ring and is fixed on the long connecting cylinder through a jackscrew; a narrow-strip boss extends from the lower part of the pry rod push ring and is used for supporting and positioning the axial position of the gasket device in the steel pipe.
The long connecting cylinder is in a long and thin tubular shape, and the length of the long connecting cylinder is slightly longer than that of the steel pipe to be welded; a threaded hole is formed in the front end of the long connecting cylinder and used for installing a sealing plug, and a plurality of small holes are formed in the side face of the part, away from the threaded hole, of the front end of the long connecting cylinder and used for spraying cooling air; the tail end of the long connecting cylinder is provided with a threaded hole for installing a push-pull handle, and a small steel pipe is welded on the side surface of the tail end away from the threaded part and is used for connecting a rubber pipe of an air compressor.
The push-pull handle is T-shaped, external threads are processed at the head of the push-pull handle, the push-pull handle is installed at the tail end of the long connecting cylinder to block a tail passage of the long connecting cylinder, and the push-pull handle pushes the liner device to move in and out of the steel pipe.
The air compressor is communicated with the long connecting cylinder through a rubber pipe and is used for blowing compressed air after welding is completed and cooling the annular gasket part.
The use method of the annular gasket device comprises the following steps:
firstly, after two pre-welded steel pipes are butted and fixed, a liner device is inserted into the steel pipes from the tail ends of the steel pipes, annular liners are positioned at the butted notches of the two steel pipes, and a pry bar support is fixed at the tail ends of the steel pipes through jackscrews.
And secondly, performing external welding operation on the groove part blocked on the inner wall of the steel pipe.
And thirdly, after welding is finished, starting an air compressor, and cooling the annular gasket by using compressed air to ensure that the annular gasket is contracted and is easy to separate from a welding line.
And fourthly, pulling the prying bar wrench forwards to push the support push ring and drive the long connecting cylinder and other components to push the annular gasket away from the welding seam.
And fifthly, loosening the jackscrew on the prying bar support, pulling the push-pull handle and drawing the liner device out of the tail end of the steel pipe.
Claims (1)
1. The utility model provides an annular liner device of small-bore pipeline welding usefulness, includes round pin axle and a plurality of jackscrews, its characterized in that: the device also comprises a sealing plug, a liner pressure ring, an annular liner, a liner support cylinder, a pry bar bracket, a pry bar wrench, a support push ring, a long connecting cylinder, a push-pull handle and an air compressor;
the shape of the sealing plug is a cylinder with external threads, and a small section of quadrangular prism is arranged at the end part of one side of the sealing plug so as to facilitate the disassembly of a wrench; the sealing plug is used for plugging the front end of the long connecting cylinder;
the gasket compression ring is in the shape of a short cylinder with an inner thread on the inner wall and a conical chamfer on the outer wall, is arranged at the front end of the gasket support cylinder and is used for compressing the annular gasket fixed on the gasket support cylinder; the outer diameter of the gasket compression ring is smaller than the inner diameter of the steel pipe to be welded;
the annular gasket is in a short cylindrical shape and is sleeved on the gasket support cylinder, the outer diameter of the annular gasket is in small clearance fit with the inner diameter of the steel pipe to be welded, and the annular gasket is used for plugging the welding groove part of the inner wall of the steel pipe to be welded;
the outer diameter of the liner support cylinder is also smaller than the inner diameter of the steel pipe to be welded, the liner support cylinder is in a longer cylindrical shape, the front end of the outer wall of the liner support cylinder is provided with threads for mounting an annular liner and a liner pressing ring, the rear end of the inner wall of the liner support cylinder is provided with internal threads for mounting the liner support cylinder on the long connecting cylinder, the front end of the inner wall of the liner support cylinder is expanded, and an annular cavity is formed with the front end of the long connecting cylinder and is used as a flow channel of cooling gas;
the pry bar support is in a ring shape and is sleeved at the tail end of the steel pipe to be welded, a threaded hole is formed in the side face of the pry bar support, and the pry bar support is fixed on the steel pipe to be welded through a jackscrew standard component; a pair of support lugs is welded on the upper part of the pry bar bracket, and a pry bar wrench is installed on the pry bar bracket through a pin shaft;
the prying bar wrench is in a longer rod shape, a pin hole is formed near the front end of the prying bar wrench, and the prying bar wrench is installed on the prying bar support through a pin shaft; after welding is finished, a prying bar wrench is wrenched to push the support push ring, and the annular gasket is pushed away from the welding seam part through the long connecting cylinder;
the supporting push ring is annular and is sleeved at the rear part of the long connecting cylinder, a threaded hole is formed in the side surface of the supporting push ring, and the supporting push ring is fixed on the long connecting cylinder through a jackscrew standard part; a narrow-strip boss extends from the lower part of the supporting push ring and is used for supporting and positioning the axial position of the gasket device in the steel pipe to be welded;
the long connecting cylinder is in a long and thin tubular shape, and the length of the long connecting cylinder is slightly longer than that of the steel pipe to be welded; a threaded hole is formed in the front end of the long connecting cylinder and used for installing a sealing plug, and a plurality of small holes are formed in the side face of the part, away from the threaded hole, of the front end of the long connecting cylinder and used for spraying cooling air; a threaded hole is processed at the tail end of the long connecting cylinder and used for installing a push-pull handle, and a small steel pipe is welded on the side surface of the tail end, away from the threaded part, and used for connecting a rubber pipe of an air compressor;
the push-pull handle is T-shaped, external threads are processed at the head of the push-pull handle, the push-pull handle is installed at the tail end of the long connecting cylinder to block a tail passage of the long connecting cylinder, and the push-pull handle pushes the gasket device to move in and out of the steel pipe to be welded;
the air compressor is communicated with the long connecting cylinder through a rubber pipe and is used for blowing compressed air after welding is completed and cooling the annular gasket part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236451.8A CN109773402B (en) | 2019-03-27 | 2019-03-27 | Annular gasket device for welding small-caliber pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236451.8A CN109773402B (en) | 2019-03-27 | 2019-03-27 | Annular gasket device for welding small-caliber pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109773402A CN109773402A (en) | 2019-05-21 |
| CN109773402B true CN109773402B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910236451.8A Active CN109773402B (en) | 2019-03-27 | 2019-03-27 | Annular gasket device for welding small-caliber pipeline |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3663902D1 (en) * | 1985-03-14 | 1989-07-20 | Klaus Tesch | Device for the reciprocal centering and gripping of two pieces of pipe for welding together |
| CA1244527A (en) * | 1986-03-12 | 1988-11-08 | Helmut K. Hahn | Pipe welding backup apparatus |
| CN201089075Y (en) * | 2007-07-25 | 2008-07-23 | 中国石油天然气股份有限公司 | Pipe line butting aligning tool |
| CN103170768B (en) * | 2011-12-21 | 2015-12-02 | 哈电集团（秦皇岛）重型装备有限公司 | Straight pipe with small diameter Butt welding device |
| CN103586622B (en) * | 2013-10-29 | 2016-02-24 | 中外合资沃得重工（中国）有限公司 | Welding recirculated water cooling cushion device and using method |
| CN106392391A (en) * | 2016-11-09 | 2017-02-15 | 江苏金鑫电器有限公司 | Automatic welding device of aluminum alloy circular seam |
| CN206732401U (en) * | 2017-03-09 | 2017-12-12 | 金川集团股份有限公司 | A kind of tubing welding protection device |
| CN109434370A (en) * | 2019-01-20 | 2019-03-08 | 北京工业大学 | A kind of centralising device for magnetic field impulse Guan Yuguan welding |
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Effective date of registration: 20211231 Address after: 163000 gate 1, floor 3, commercial service, No. a6-60, Lenovo wisdom Park, boxue street, high tech Zone, Daqing City, Heilongjiang Province Patentee after: Daqing Qingdong Hongyun Technology Co.,Ltd. Address before: No. 199, development road, high tech Zone, Daqing City, Heilongjiang Province, 163318 Patentee before: NORTHEAST PETROLEUM University |