CN217559251U - Neck bush tubular undercoating pipe end anticreep grafting connecting device - Google Patents
Neck bush tubular undercoating pipe end anticreep grafting connecting device Download PDFInfo
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- CN217559251U CN217559251U CN202220740079.1U CN202220740079U CN217559251U CN 217559251 U CN217559251 U CN 217559251U CN 202220740079 U CN202220740079 U CN 202220740079U CN 217559251 U CN217559251 U CN 217559251U
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Abstract
The invention relates to an anti-drop splicing connecting device for a pipe end of an inner bushing type inner coating, which comprises a first expanding pipe, an inner bushing, a heat insulating sleeve and a second expanding pipe, wherein an installation groove is annularly arranged in the middle of the outer side wall of the heat insulating sleeve, one end of the inner bushing is inserted into an expanding end of the first expanding pipe, the other end of the inner bushing is inserted into an expanding end of the second expanding pipe, the expanding end of the first expanding pipe is welded with the expanding end of the second expanding pipe, the installation groove, the inner side wall of the first expanding pipe and the inner side wall of the second expanding pipe form a heat insulating cavity, and the heat insulating sleeve is positioned in the heat insulating cavity and between a welding seam between the inner side wall of the first expanding pipe and the inner side wall of the second expanding pipe and the inner side wall of the inner bushing. Compared with the prior art, the invention has the advantages of high reliability, high construction speed and good corrosion resistance, and ensures the integrity of the internal coating.
Description
Technical Field
The invention relates to a pipeline connecting structure, in particular to an anti-drop splicing connecting device for a pipe end of an inner bushing type inner coating.
Background
In recent years, the application of inner coating anti-corrosion pipelines is more and more, in the construction process of the inner coating anti-corrosion pipelines, the traditional steel pipeline construction generally adopts a welding connection mode, and the problem that the welding high temperature damages the material of the inner coating anti-corrosion coating of the pipe end when the pipe ends are connected exists in the welding connection mode. In addition, even if a special welding process is adopted for butt joint of the pipe ends of the bimetal composite pipe, the problem of accelerated corrosion caused by reduction of metal performance due to melting of welding metal is difficult to avoid.
In order to avoid damage to an inner coating caused by welding construction of a common inner coating pipeline, the pipeline is directly plugged together by adopting a quick plugging connection method, but the plugging mode has strict requirements on the diameter and the state of an interface of the pipeline, so that the connection is easy to fail, and the problem of poor pipeline connection exists.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the anti-falling plug-in connecting device for the pipe end of the inner bushing type inner coating, which has the advantages of high reliability, high construction speed and good corrosion resistance, and ensures the integrity of the inner coating.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an interior bushing type inner coating pipe end anticreep grafting connecting device, includes first hole enlargement pipe, interior bushing pipe, radiation shield casing and second hole enlargement pipe, radiation shield casing lateral wall middle part ring direction be equipped with the mounting groove, interior bushing pipe one end insert the hole enlargement end of first hole enlargement pipe, the other end inserts the hole enlargement end of second hole enlargement pipe, the hole enlargement end of first hole enlargement pipe and the hole enlargement end welding of second hole enlargement pipe, mounting groove, first hole enlargement pipe inside wall and second hole enlargement pipe inside wall constitute a thermal-insulated cavity, the radiation shield casing be located thermal-insulated cavity, and be located between the welding seam and the interior lateral wall of lining casing between first hole enlargement pipe inside wall and the second hole enlargement pipe.
Furthermore, a first adhesive is arranged at the joint of the end part of the inner bushing and the inner side wall of the first expanding pipe.
Furthermore, a second adhesive is arranged at the joint of the end part of the inner bushing and the inner side wall of the second expanding pipe.
Furthermore, the inner side wall of the diameter expanding end of the first diameter expanding pipe is tightly attached to the outer side wall of the inner bushing pipe.
Furthermore, the inner side wall of the diameter expanding end of the second diameter expanding pipe is tightly attached to the outer side wall of the inner bushing pipe.
Compared with the prior art, the invention has the following beneficial effects:
(1) The pipe end anti-falling plug-in connecting device of the inner bushing type inner coating adopts two expanding pipes with pipe end expanding and inner coatings, a heat insulating sleeve and an inner bushing, wherein the inner bushing is provided with an installation groove in the circumferential direction, the heat insulating sleeve is embedded in the installation groove, two ends of the inner bushing are respectively inserted into the two expanding pipes, the installation groove and the two expanding pipes form a heat insulating cavity, the heat insulating sleeve is accommodated in the heat insulating cavity and positioned between a butt joint between the inner side wall of the first expanding pipe and the second expanding pipe and the inner side wall of the inner bushing, the butt joint of the two expanding pipes is welded, and the heat insulating sleeve plays a role in isolating a welding heat source from the inner coating of the expanding pipes in the welding process, so that the reliability of the anti-falling plug-in connecting device and the integrity of the inner coating are ensured, and the requirements of corrosion resistance are met;
(2) The pipe end of the expanding pipe is expanded to ensure that the drift diameter of the pipeline is not influenced after the lining sleeve is installed, and the application and construction requirements of pipelines with different pressures and corrosion resistance requirements can be met;
(3) The pipe end anti-drop inserting connection device of the inner bushing type inner coating adopts two inner coating pipes with pipe end expanding diameters to be connected with one inner bushing in an interference inserting manner, the installation process is simple and convenient, and the construction speed is high;
(4) According to the invention, the first adhesive is arranged at the joint between the end part of the inner bushing pipe and the inner side wall of the first expanding pipe, the second adhesive is arranged at the joint between the end part of the inner bushing pipe and the inner side wall of the second expanding pipe, and the first adhesive and the second adhesive are far away from the welding position, so that the adhesives are not influenced by high temperature during welding, and the corrosion resistance is improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an assembled cross-sectional view of the liner sleeve and the insulating sleeve;
FIG. 3 is a cross-sectional view of a first expanded diameter tube;
FIG. 4 is an assembled sectional view of a first expanding tube and an inner liner tube;
the numbering in the figures illustrates:
1. the heat insulation pipe comprises a first expanding pipe, 2 parts of a lining sleeve, 3 parts of a heat insulation sleeve, 4 parts of a second expanding pipe, 1-1 parts of a welding line, 2-1 parts of a first adhesive and 2-2 parts of a second adhesive.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
An anti-drop splicing connection device for a pipe end of an inner bushing type inner coating comprises a first expanding pipe 1, an inner bushing pipe 2, an annular heat insulation sleeve 3 and a second expanding pipe 4, as shown in figures 1 and 3, wherein an installation groove matched with the heat insulation sleeve 3 is annularly arranged in the middle of the outer side wall of the heat insulation sleeve 3, one end of the inner bushing pipe 2 is inserted into a diameter expansion end of the first expanding pipe 1, the other end of the inner bushing pipe is inserted into a diameter expansion end of the second expanding pipe 4, the diameter expansion end of the first expanding pipe 1 is welded with the diameter expansion end of the second expanding pipe 4, the installation groove, the inner side wall of the first expanding pipe 1 and the inner side wall of the second expanding pipe 4 form a heat insulation cavity, the heat insulation sleeve 3 is positioned in the heat insulation cavity, a first adhesive 2-1 is arranged between a welding seam 1-1 between the inner side wall of the first expanding pipe 1 and the inner side wall of the second expanding pipe 4, a first adhesive 2-1 is arranged at a seam between the end of the inner bushing pipe 2 and the inner side wall of the first expanding pipe 1, and a second adhesive 2-2 is arranged at a seam between the end of the inner side wall of the inner bushing pipe 4.
The outer side wall of the lining sleeve 2 is tightly attached to the inner side wall of the first expanding pipe 1 and the inner side wall of the second expanding pipe 4, interference insertion connection is achieved, and sealing performance is good.
The installation process of the pipe end anti-drop splicing connecting device of the inner lining sleeve type inner coating is as follows:
as shown in fig. 4, a first adhesive 2-1 is applied to one end of the inner sleeve 2, and the end is inserted into the diameter-expanding end of the first expanding pipe 1;
and the other end of the lining sleeve 2 is coated with a second adhesive 2-2 and inserted into the expanding end of the second expanding pipe 4, the first expanding pipe 1 and the second expanding pipe 4 are butted, and a middle butt end face welding seam 1-1 is welded.
After pipe end expanding is carried out on the first expanding pipe 1 and the second expanding pipe 4, an inner coating is processed, the positions of smearing the first adhesive 2-1 and the second adhesive 2-2 are far away from the middle welding position during field splicing, the heat insulation sleeve 3 has a heat insulation protection effect on the coating on the inner side wall of the lining sleeve 2, the inner coating and the adhesives are not influenced by high temperature during welding, the reliability of the anti-falling splicing connecting device and the integrity of the inner coating are guaranteed, the pipeline diameter after the lining sleeve is installed is not influenced by the pipe end expanding, and the pipeline application construction requirements of different pressures and corrosion prevention requirements can be met.
The embodiment provides an inner bushing type inner coating pipe end anti-falling plug-in connection device, which is suitable for pipe end plug-in connection construction of a protective pipeline with an inner coating, two inner coating pipes with pipe end expanding are adopted to be connected with an inner bushing 2 in an interference plug-in mode, a heat insulation sleeve 3 is embedded in the middle of the inner bushing 2, two expanding pipe ends are connected with the inner bushing 2 in a welded mode after being connected in a plug-in mode, an adhesive is coated on the inner portion of each expanding pipe end and the pipe end of the inner bushing 2 to seal a gap, the plug-in connection is high in construction speed, and the reliability of plug-in connection is improved through a welding method.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.
Claims (5)
1. The utility model provides an interior bushing type undercoating pipe end anticreep grafting connecting device, its characterized in that includes first expanding tube (1), interior bushing pipe (2), radiation shield (3) and second expanding tube (4), radiation shield (3) lateral wall middle part hoop be equipped with the mounting groove, interior bushing pipe (2) one end insert the expanding end of first expanding tube (1), the other end inserts the expanding end of second expanding tube (4), the expanding end of first expanding tube (1) and the expanding end welding of second expanding tube (4), mounting groove, first expanding tube (1) inside wall and second expanding tube (4) inside wall constitute a thermal-insulated cavity, radiation shield (3) be located the thermal-insulated cavity, and be located between welding seam (1-1) and interior bushing pipe (2) inside wall between first expanding tube (1) inside wall and second expanding tube (4).
2. The anti-drop plug-in connection device for the pipe end with the inner bushing type inner coating according to claim 1, characterized in that a first adhesive (2-1) is arranged at a joint between the end of the inner bushing (2) and the inner side wall of the first expanded diameter pipe (1).
3. The anti-drop plug-in connection device for the pipe end of the inner bushing type inner coating according to claim 1, characterized in that a second adhesive (2-2) is arranged at a joint of the end of the inner bushing (2) and the inner side wall of the second expanding pipe (4).
4. The anti-drop plug-in connection device for the pipe end of the inner bushing type inner coating according to claim 1, characterized in that the inner side wall of the expanding end of the first expanding pipe (1) is closely attached to the outer side wall of the inner bushing (2).
5. The anti-drop plug-in connection device for the pipe end of the inner bushing type inner coating according to claim 1, characterized in that the inner side wall of the expanding end of the second expanding pipe (4) is tightly attached to the outer side wall of the inner bushing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220740079.1U CN217559251U (en) | 2022-03-31 | 2022-03-31 | Neck bush tubular undercoating pipe end anticreep grafting connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220740079.1U CN217559251U (en) | 2022-03-31 | 2022-03-31 | Neck bush tubular undercoating pipe end anticreep grafting connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217559251U true CN217559251U (en) | 2022-10-11 |
Family
ID=83469819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220740079.1U Active CN217559251U (en) | 2022-03-31 | 2022-03-31 | Neck bush tubular undercoating pipe end anticreep grafting connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217559251U (en) |
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2022
- 2022-03-31 CN CN202220740079.1U patent/CN217559251U/en active Active
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