CN214305686U - Pipeline welding structure with lining containing liquid anticorrosive paint - Google Patents
Pipeline welding structure with lining containing liquid anticorrosive paint Download PDFInfo
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- CN214305686U CN214305686U CN202023043200.5U CN202023043200U CN214305686U CN 214305686 U CN214305686 U CN 214305686U CN 202023043200 U CN202023043200 U CN 202023043200U CN 214305686 U CN214305686 U CN 214305686U
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- anticorrosive
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Abstract
The utility model discloses a liquid anticorrosive paint's pipeline welded structure is placed to inside lining, welded structure include that anticorrosive pipeline, liquid anticorrosive paint and inside lining connect, welded connection and formation welding seam between the adjacent anticorrosive pipeline, inside lining connects and establishes in anticorrosive pipeline, is located the inboard of the welding seam between the adjacent anticorrosive pipeline, inside lining connects and is equipped with the annular between the anticorrosive pipeline and annotates the material clearance, liquid anticorrosive paint establishes in the annular is annotated the material clearance. The utility model discloses set up inside lining joint and form annular notes material clearance, carry out the welding of pipeline earlier, pour into liquid anticorrosive coating after the welding is accomplished and form anticorrosive coating, avoided the influence destruction of high fever to anticorrosive coating in the welding process, both guaranteed the corrosion resisting property on the inner wall, avoided the interior defect of mending mouthful operation construction difficulty again; the lining joint forms a finished anticorrosive coating after being corroded in a short time, the circulation of media in the pipeline is not influenced, and the reduction of the anticorrosive performance is avoided.
Description
Technical Field
The utility model relates to a pipeline corrosion prevention technical field, concretely relates to liquid anticorrosive paint's pipeline welded structure is placed to inside lining.
Background
When the pipeline is applied to the fields of drainage, oil transportation, water injection, sea underwater and the like, anticorrosive treatment is generally needed, but the pipeline which has been subjected to anticorrosive treatment is welded and connected, the welding high temperature can influence the anticorrosive layer on the inner wall and the outer wall of the pipeline, so that the anticorrosive layer is seriously damaged, and an anticorrosive fault is formed inside and outside the pipeline, therefore, a weld joint needs to be repaired after welding, when the weld joint outside the pipeline is repaired, the operation is simple, but the operation is difficult when the inner patch is repaired, for a small-diameter pipeline, when personnel cannot enter, equipment is needed to be repaired, but the repairing effect of the equipment cannot be effectively guaranteed, and further the anticorrosive performance of the inner patch cannot be up to standard, therefore, when the anticorrosive pipeline which needs to be welded is treated, if the anticorrosive problem at the inner patch is solved, the anticorrosive treatment is difficult. The utility model provides a liquid anticorrosive paint's pipeline welded structure is placed to inside lining solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a liquid anticorrosive paint's pipeline welded structure is placed to inside lining sets up inside lining joint preparation clearance for place liquid anticorrosive paint and play the interior repaired mouth of exempting from and realize anticorrosive effect.
The utility model provides a technical scheme that above-mentioned technical problem adopted is:
a pipeline welding structure with a lining containing liquid anticorrosive paint comprises anticorrosive pipelines, liquid anticorrosive paint and a lining joint, wherein adjacent anticorrosive pipelines are connected in a welding mode to form a welding line;
the both ends of inside lining joint are fixed connection respectively at two adjacent anticorrosive pipeline tip, annular notes material clearance is located inside lining joint outer wall middle part and anticorrosive pipeline inner wall tip between.
Furthermore, the end part of the anti-corrosion pipeline is provided with a material injection hole and an exhaust hole, and the inner end of the material injection hole and the inner end of the exhaust hole are both positioned in the annular material injection gap.
Further, the inside lining connects and is connected with anticorrosive pipeline through anticorrosive paint, anticorrosive paint establishes on the outer wall of inside lining joint tip.
Furthermore, the inner wall and the outer wall of the anti-corrosion pipeline are both provided with anti-corrosion coatings, and the outer side of the welding line is provided with the anti-corrosion coatings.
Furthermore, an annular groove is formed in the middle of the outer wall of the lining joint.
Furthermore, the material injection holes and the exhaust holes are respectively formed in two adjacent anti-corrosion pipelines, the material injection holes are formed in the lower portions of the anti-corrosion pipelines, and the exhaust holes are formed in the upper portions of the anti-corrosion pipelines.
Furthermore, a plug is arranged on the exhaust hole.
Preferably, the anti-corrosion pipeline is a carbon steel pipe, the lining joint is an aluminum pipe, and an oxide layer on the surface of the aluminum pipe is removed.
The utility model discloses beneficial effect as follows:
the inner lining joint is arranged to form an annular material injection gap, the pipeline is welded firstly, liquid anticorrosive paint is injected to form an anticorrosive coating after the welding is finished, and the anticorrosive coating damaged by high heat in the welding process is coated again, so that the anticorrosive performance on the inner wall is ensured, and the defect of difficult operation and construction of an inner repaired mouth is avoided; the lining joint forms a finished anticorrosive coating after being corroded in a short time, the circulation of media in the pipeline is not influenced, and the reduction of the anticorrosive performance is avoided.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic diagram of the plugging state of the lining joint of the present invention.
Reference numerals: 1-anticorrosive pipeline, 11-material injection hole, 12-exhaust hole, 2-liquid anticorrosive coating, 3-lining joint, 4-welding line and 5-annular material injection gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
As shown in fig. 1, 2, a pipeline welded structure of liquid anticorrosive coating is placed to inside lining, including anticorrosive pipeline 1, liquid anticorrosive coating 2 and inside lining joint 3, welded connection forms welding seam 4 between the adjacent anticorrosive pipeline 1, inside lining joint 3 is established in anticorrosive pipeline 1, is located the inboard of welding seam 4 between the adjacent anticorrosive pipeline 1, inside lining joint 3 and anticorrosive pipeline 1 between be equipped with the annular and annotate material clearance 5, liquid anticorrosive coating 2 is established in annular notes material clearance 5.
The principle of the utility model is as follows: anticorrosive pipeline 1 is when welding, high temperature can influence anticorrosive coating on the inner wall, make it lose anticorrosive effect, establish inside lining joint 3 on anticorrosive pipeline 1's inner wall, and reserve annular notes material clearance 5 between inside lining joint 3 and anticorrosive pipeline 1, after the welding finishes, anticorrosive coating on anticorrosive pipeline 1 inner wall is destroyed, pour into liquid anticorrosive coating 2 into in material clearance 5 toward the annular through the notes material hole 11 of reserving on anticorrosive pipeline 1 this moment, make liquid anticorrosive coating 2 form anticorrosive coating once more at anticorrosive pipeline 1's inner wall, play the anticorrosive action, and inside lining joint 3 is in the use, corrode in the short time by the medium in the pipeline and expose the anticorrosive coating that liquid anticorrosive coating 2 formed, do not influence the normal use of pipeline.
As shown in fig. 1 and 2, two ends of the lining joint 3 are respectively and fixedly connected to the end portions of two adjacent corrosion-resistant pipelines 1, and the annular injection gap 5 is located between the middle portion of the outer wall of the lining joint 3 and the end portion of the inner wall of the corrosion-resistant pipeline 1.
Further, an annular groove is formed in the middle of the outer wall of the lining joint 3. In the actual use process, the depth of the annular groove can be adjusted according to the specific thickness of the anti-corrosion coating, so that the thickness of the coating can be adjusted.
As shown in fig. 1, a material injection hole 11 and an exhaust hole 12 are further formed in the end portion of the corrosion-resistant pipeline 1, and the inner end of the material injection hole 11 and the inner end of the exhaust hole 12 are both located in the annular material injection gap 5.
Furthermore, the material injection hole 11 and the exhaust hole 12 are respectively arranged at two ends of the anti-corrosion pipeline 1, namely, on the end part of the anti-corrosion pipeline 1, one end of the material injection hole 11 is arranged, the other end of the material injection hole is provided with the exhaust hole 12, when the end part of the anti-corrosion pipeline 1 provided with different hole positions is butted, the material injection hole 11 is arranged at the lower part of the anti-corrosion pipeline 1, and the exhaust hole 12 is arranged at the upper part of the anti-corrosion pipeline 1. When the material is injected, the liquid anticorrosive paint 2 is injected from the material injection hole 11 at the bottom until the liquid anticorrosive paint 2 overflows from the exhaust hole 12, namely the liquid anticorrosive paint is fully injected.
As shown in fig. 2, further, the lining joint 3 is connected with the corrosion-resistant pipeline 1 through a corrosion-resistant coating, and the corrosion-resistant coating is arranged on the outer wall of the end portion of the lining joint 3.
Preferably, the coating method of the anticorrosive coating on the anticorrosive pipeline 1 comprises the following steps: the high-performance epoxy powder coating is formed by spraying powder and curing after being heated to 230 ℃, and then the liquid anticorrosive coating 2 is additionally coated on the outer side after the anticorrosive pipeline 1 is welded.
Furthermore, the inner wall and the outer wall of the anti-corrosion pipeline 1 are both provided with anti-corrosion coatings, and the outer side of the welding line 4 is provided with the anti-corrosion coatings. The coating method of the anticorrosive coating on the wall of the anticorrosive pipeline 1 comprises the following steps: the high-performance epoxy powder coating is formed by spraying powder and solidifying the powder after being heated to 230 ℃, and then the liquid anticorrosive coating 2 is adopted to carry out supplementary coating on the welding seams between the anticorrosive pipelines 1.
Further, a plug is arranged on the exhaust hole 12. Preferably, the plug and the vent 12 are welded or sealed by paint.
Preferably, the anti-corrosion pipeline 1 is a carbon steel pipe, the lining joint 3 is an aluminum pipe, and an oxide layer on the surface of the aluminum pipe is removed. The aluminum pipe with the surface oxide layer removed can be corroded in a short time, and medium circulation inside the pipeline is not affected.
Preferably, the liquid anticorrosive paint 3 is a liquid high-performance solvent-free epoxy anticorrosive paint.
A construction method of a pipeline welding structure with a lining provided with liquid anticorrosive paint comprises the following steps:
s1, prefabricating a pipeline: prefabricating the anti-corrosion pipeline 1 into a required shape and specification, then coating an anti-corrosion coating, and removing an oxide layer on the surface of the lining joint 3 to finish prefabrication of a component;
s2, pipeline assembly: coating liquid anticorrosive paint at the outer end of the lining joint 3, then inserting the lining joint 3 into one section of anticorrosive pipeline 1, after the lining joint 3 is stabilized, sleeving the other section of anticorrosive pipeline 1 on the lining joint 3, and butting the two sections of anticorrosive pipelines 1;
s3, welding the pipeline: welding two adjacent sections of the anti-corrosion pipelines 1;
s4, paint injection: after welding, injecting the liquid anticorrosive paint 2 into the material injection hole 11 until the liquid anticorrosive paint 2 overflows from the exhaust hole 12, and plugging the exhaust hole 12 by using a plug;
s5, shape repairing: trimming the welding seams 4 between the anti-corrosion pipelines 1, and then coating the anti-corrosion coating again at the trimmed positions;
s6, continuous construction: sequentially welding and repairing the components according to S2-S5 until the whole anti-corrosion pipeline is welded;
s7, joint ablation: after the liquid anticorrosive coating 2 is put into use, the lining joint 3 is ablated under the corrosion of the outside, and the anticorrosive coating after the liquid anticorrosive coating 2 is condensed is exposed.
Preferably, in step S3, the duct is cooled using a wet tissue when the member is welded.
Preferably, in step S2, when the anti-corrosion pipeline 1 is butted, it is ensured that the material injection hole 11 is located at the lower side and the exhaust hole 12 is located at the upper side.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (6)
1. A pipeline welding structure with a lining containing liquid anticorrosive paint is characterized by comprising anticorrosive pipelines (1), liquid anticorrosive paint (2) and lining joints (3), wherein adjacent anticorrosive pipelines (1) are connected in a welding mode to form welding seams (4), the lining joints (3) are arranged in the anticorrosive pipelines (1) and located on the inner sides of the welding seams (4) between the adjacent anticorrosive pipelines (1), annular material injection gaps (5) are formed between the lining joints (3) and the anticorrosive pipelines (1), and the liquid anticorrosive paint (2) is arranged in the annular material injection gaps (5);
two ends of the lining joint (3) are respectively and fixedly connected with the end parts of two adjacent anticorrosive pipelines (1), and the annular injection gap (5) is positioned between the middle part of the outer wall of the lining joint (3) and the end part of the inner wall of the anticorrosive pipeline (1);
the end part of the anti-corrosion pipeline (1) is provided with a material injection hole (11) and an exhaust hole (12), and the inner end of the material injection hole (11) and the inner end of the exhaust hole (12) are both positioned in the annular material injection gap (5);
and the inner wall and the outer wall of the anti-corrosion pipeline (1) are both provided with anti-corrosion coatings, and the outer side of the welding line (4) is provided with the anti-corrosion coatings.
2. The pipe welding structure internally lined with the liquid anticorrosive paint according to claim 1, characterized in that: the lining joint (3) is connected with the anti-corrosion pipeline (1) through anti-corrosion paint, and the anti-corrosion paint is arranged on the outer wall of the end part of the lining joint (3).
3. The pipe welding structure internally lined with the liquid anticorrosive paint according to claim 1, characterized in that: and an annular groove is formed in the middle of the outer wall of the lining joint (3).
4. The pipe welding structure internally lined with the liquid anticorrosive paint according to claim 1, characterized in that: the material injection hole (11) and the exhaust hole (12) are respectively arranged at two ends of the anti-corrosion pipeline (1), the material injection hole (11) is positioned at the lower part of the anti-corrosion pipeline (1), and the exhaust hole (12) is positioned at the upper part of the anti-corrosion pipeline (1).
5. The pipe welding structure internally lined with the liquid anticorrosive paint according to claim 1, characterized in that: and a plug is arranged in the exhaust hole (12).
6. The pipe welding structure internally lined with the liquid anticorrosive paint according to claim 1, characterized in that: the anti-corrosion pipeline (1) is a carbon steel pipe, the lining joint (3) is an aluminum pipe, and an oxide layer on the surface of the aluminum pipe is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023043200.5U CN214305686U (en) | 2020-12-17 | 2020-12-17 | Pipeline welding structure with lining containing liquid anticorrosive paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023043200.5U CN214305686U (en) | 2020-12-17 | 2020-12-17 | Pipeline welding structure with lining containing liquid anticorrosive paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214305686U true CN214305686U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023043200.5U Active CN214305686U (en) | 2020-12-17 | 2020-12-17 | Pipeline welding structure with lining containing liquid anticorrosive paint |
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| Country | Link |
|---|---|
| CN (1) | CN214305686U (en) |
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- 2020-12-17 CN CN202023043200.5U patent/CN214305686U/en active Active
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