CN215488144U - Butt joint connecting structure for coating pipelines - Google Patents
Butt joint connecting structure for coating pipelines Download PDFInfo
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- CN215488144U CN215488144U CN202121847923.2U CN202121847923U CN215488144U CN 215488144 U CN215488144 U CN 215488144U CN 202121847923 U CN202121847923 U CN 202121847923U CN 215488144 U CN215488144 U CN 215488144U
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Abstract
The utility model provides a butt joint structure of a coated pipeline, which comprises: the first end of the first coupling is connected with the outer wall surface of the first pipeline body, the first end of the second coupling is connected with the outer wall surface of the second pipeline body, and the second end of the first coupling and the second end of the second coupling are coaxially connected outside the first pipeline body and the second pipeline body; the first end of holding ring is connected in the outer wall of second pipeline body, and the tip of second pipeline body is stretched out to the second end of holding ring, and the tip of first pipeline body is planted the second end of holding ring and is docked with the second pipeline body is coaxial, and the sealing member is located first pipeline body with between the second pipeline body. This structure is through setting up the sealing member between first pipeline body and second pipeline body, can prevent that inside oil, the gas of pipeline from outwards oozing, strengthens sealed effect.
Description
Technical Field
The utility model relates to the technical field of oil and gas transmission pipelines, in particular to a butt joint connecting structure of a coating pipeline.
Background
In the field of petrochemical industry, pipelines are often required to convey various media, and in order to prevent and delay corrosion of the pipelines by the conveyed media, prolong the service life of the pipelines and reduce transmission wear and resistance, the inner walls of the pipelines are generally provided with anticorrosive coatings.
To long pipeline, need many pipeline end to end welding, the pipeline can destroy anticorrosive coating in the pipeline when the welding, for the emergence of avoiding this condition, sets up the coupling in the pipeline outside usually among the prior art, docks adjacent pipeline end to end in the inside of coupling, but when welding adjacent coupling, easily influences the inside coating of pipeline, and has inside oil of pipeline, gas to ooze through the butt joint department between pipeline and the pipeline, the problem of leaking appears.
SUMMERY OF THE UTILITY MODEL
The utility model provides a butt joint structure of coated pipelines, which is used for solving the problems that in the prior art, the end to end butt joint of adjacent pipelines is carried out in a coupling, when the adjacent coupling is welded, the coating in the pipeline is easily influenced, and oil and gas in the pipeline seep out through the butt joint between the pipeline and the pipeline to cause leakage.
The utility model provides a butt joint structure of a coated pipeline, which comprises: the pipe joint comprises a first pipe body, a second pipe body, a first coupling, a second coupling, a positioning ring and a sealing element, wherein the first end of the first coupling is connected with the outer wall surface of the first pipe body, the first end of the second coupling is connected with the outer wall surface of the second pipe body, and the second end of the first coupling and the second end of the second coupling are coaxially connected outside the first pipe body and the second pipe body; the first end of the positioning ring is connected to the outer wall surface of the second pipeline body, the second end of the positioning ring extends out of the end of the second pipeline body, the end of the first pipeline body is inserted into the second end of the positioning ring and is in coaxial butt joint with the second pipeline body, and the sealing element is arranged between the first pipeline body and the second pipeline body.
According to the butt joint structure of the coated pipes provided by the utility model, the second end of the first coupling and the first pipe body form a first annular space, and the second end of the second coupling and the second pipe body form a second annular space.
According to the butt joint structure of the coated pipeline, the thickness of the first end and the second end of the first coupling is uniform, and the first end and the second end of the first coupling are in smooth transition connection; the first end to the second end thickness of second coupling is even, just the first end and the smooth transition of second end of second coupling are connected.
According to the butt joint structure of the coated pipes provided by the utility model, when the end part of the first pipe body is inserted into the second end of the positioning ring to be coaxially butted with the second pipe body, a gap exists between the second end of the first coupling and the second end of the second coupling, and a welding seam is constructed at the gap.
According to the butt joint structure of the coated pipes provided by the utility model, the end part of the first pipe body extends out of the second end of the first coupling, and the end part of the second pipe body is flush with the second end of the second coupling.
According to the butt joint structure of the coated pipes provided by the utility model, the length of the extending part of the second end of the positioning ring extending out of the end part of the second pipe body is smaller than the length of the connecting part of the positioning ring and the outer wall surface of the second pipe body.
According to the butt joint structure of the coated pipes provided by the utility model, the second end of the first coupling is provided with the first chamfer, the second end of the second coupling is provided with the second chamfer, and the first chamfer and the second chamfer are oppositely arranged.
According to the butt joint structure of the coated pipeline, the sealing element is arranged between the first pipeline body and the second pipeline body in an extruding mode; the sealing element is connected to the end face of the first pipeline body, the end face of the second pipeline body or the corresponding position of the inner wall of the positioning ring and the end part of the second pipeline body.
According to the butt joint structure of the coated pipes provided by the utility model, the end face of the second pipe body is provided with a third chamfer, and the sealing element is arranged at the third chamfer.
According to the butt joint structure of the coated pipes provided by the utility model, a sealing element is also arranged between the outer wall surface of the first pipe body and/or the outer wall surface of the second pipe body and the positioning ring.
According to the butt joint connection structure for the coated pipelines, the first coupling and the second coupling are correspondingly sleeved on the outer wall surface of the first pipeline body and the outer wall surface of the second pipeline body, the first end of the positioning ring is connected to the outer wall surface of the second pipeline body, and the second end of the positioning ring extends out of the end part of the second pipeline body, so that the second end of the positioning ring inserted into the end part of the first pipeline body is coaxially butted with the end part of the first pipeline body; the sealing element is arranged between the first pipeline body and the second pipeline body, so that oil and gas in the pipeline can be prevented from seeping outwards through the joint of the first pipeline body and the second pipeline body; and the butt joint department of first pipeline body and second pipeline body arranges the inside in the holding ring, and the inside in the butt joint department of first coupling and second coupling is arranged in to the holding ring, is favorable to further improving sealed effect, avoids oil, gas leakage.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a butt joint structure of coated pipes provided by the present invention;
FIG. 2 is a schematic structural view of a first pipe body and a first collar provided in the present invention;
FIG. 3 is a schematic structural view of a second pipe body and a second collar provided in the present invention;
reference numerals:
1: a first pipe body; 2: a first collar; 3: a second pipe body;
4: a second coupling; 5: a seal member; 6: a first annular space;
7: a second annular space; 8: a first chamfer; 9: a second chamfer;
10: a third chamfer; 11: a retaining ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a butt joint structure of coated pipes according to the present invention with reference to fig. 1 to 3.
Referring to fig. 1, the present embodiment provides a coated pipe butt connection structure, including: the pipe joint comprises a first pipe body 1, a second pipe body 3, a first coupling 2, a second coupling 4, a positioning ring 11 and a sealing element 5, wherein the first end of the first coupling 2 is connected with the outer wall surface of the first pipe body 1, the first end of the second coupling 4 is connected with the outer wall surface of the second pipe body 3, and the second end of the first coupling 2 and the second end of the second coupling 4 are coaxially connected outside the first pipe body 1 and the second pipe body 3; the first end of holding ring 11 is connected in the outer wall of second pipeline body 3, and the tip of second pipeline body 3 is stretched out to the second end of holding ring 11, and the coaxial butt joint of second end and second pipeline body 3 of holding ring 11 is inserted to the tip of first pipeline body 1, and sealing member 5 locates between first pipeline body 1 and second pipeline body 3.
The butt joint structure of the coated pipeline provided by the embodiment comprises a first pipeline body 1, a second pipeline body 3, a first coupling 2, a second coupling 4, a positioning ring 11 and a sealing element 5, wherein a long conveying pipeline is formed by connecting the first pipeline body 1 and the second pipeline body 3; wherein, the outer wall cover of first pipeline body 1 is equipped with first coupling 2, the outer wall cover of second pipeline body 3 is equipped with second coupling 4, it is concrete, the first end of first coupling 2 welds in the outer wall of first pipeline body 1, the first end of second coupling 4 welds in the outer wall of second pipeline body 3, the second end of first coupling 2 and the second end of second coupling 4 hold at the outside coaxial coupling of first pipeline body 1 and second pipeline body 3, make the butt joint department of first pipeline body 1 and second pipeline body 3 place the inside of first coupling 2 and the junction of second coupling 4 in, strengthen sealedly.
Referring to fig. 3, the positioning ring 11 is sleeved on the outer wall surface of the second pipe body 3, specifically, a first end of the positioning ring 11 is welded to the second pipe body 3, a second end of the positioning ring 11 extends out of an end of the second pipe body 3, that is, there is a distance between the second end of the positioning ring 11 and the end of the second pipe body 3, and a distance from the end of the second pipe to the first end of the second collar 4 is greater than a distance from the end of the second pipe to the first end of the positioning ring 11; when the end of the first pipeline body 1 is inserted into the second end of the positioning ring 11 and the end of the second pipeline body 3 for butt joint, the second end of the first coupling 2 and the second end of the second coupling 4 are connected at the outer part of the joint of the first pipeline body 1 and the second pipeline body 3, so that the joint of the first pipeline body 1 and the second pipeline body 3 is attached to the inner wall surface of the positioning ring 11, the positioning ring 11 is arranged inside the first coupling 2 and the second coupling 4, a sealing element 5 is arranged between the first pipeline body 1 and the second pipeline body 3, sealing is further enhanced, oil and gas inside the coated pipeline are prevented from seeping out between the coated pipeline body and the positioning ring 11 through the butt joint of the first pipeline body 1 and the second pipeline body 3, and leakage is avoided.
In the embodiment, the first coupling and the second coupling are correspondingly sleeved on the outer wall surface of the first pipeline body and the outer wall surface of the second pipeline body, the first end of the positioning ring is connected to the outer wall surface of the second pipeline body, and the second end of the positioning ring extends out of the end part of the second pipeline body, so that the second end of the positioning ring inserted into the end part of the first pipeline body is coaxially butted with the end part of the first pipeline body; the sealing element is arranged between the first pipeline body and the second pipeline body, so that oil and gas in the pipeline can be prevented from seeping outwards through the joint of the first pipeline body and the second pipeline body; and the butt joint department of first pipeline body and second pipeline body arranges the inside in the holding ring, and the inside in the butt joint department of first coupling and second coupling is arranged in to the holding ring, is favorable to further improving sealed effect, avoids oil, gas leakage.
On the basis of the above embodiments, in this embodiment, the second end of the first collar 2 forms a first annular space 6 with the first pipe body 1, and the second end of the second collar 4 forms a second annular space 7 with the second pipe body 3.
Referring to fig. 2, a first coupling 2 is sleeved on an outer wall surface of a first pipeline body 1, wherein a first end of the first coupling 2 is welded to the first pipeline body 1, and a second end of the first coupling 2 is bent outward relative to the first end of the first coupling 2, so that a first annular space 6 is formed between the second end of the first coupling 2 and the first pipeline body 1; referring to fig. 3, the second coupling 4 is sleeved on the outer wall surface of the second pipe body 3, a first end of the second coupling 4 is welded to the second pipe body 3, and a second end of the second coupling 4 is bent outward relative to the first end of the first coupling 2, so that a second annular space 7 is formed between the second end of the second coupling 4 and the second pipe body 3.
Further, when the second end of the end portion inserting positioning ring 11 of the first pipeline body 1 is in butt joint with the end portion of the second pipeline body 3, the second end of the first coupling 2 and the second end of the second coupling 4 are in external coaxial connection at the butt joint of the first pipeline body 1 and the second pipeline body 3, so that an annular space is formed between the first pipeline body, the second pipeline body and the first coupling and the second coupling, when the first coupling 2 and the second coupling 4 are welded, welding influence on coatings inside the first pipeline body 1 and the second pipeline body 3 can be avoided, cracking caused by the fact that the butt joint of the first pipeline body 1 and the second pipeline body 3 is influenced during welding can also be avoided, the sealing effect is further enhanced, oil and gas inside the pipeline are prevented from seeping outwards through the butt joint, and oil and gas leakage is avoided.
On the basis of the above embodiment, referring to fig. 2 and 3, the thickness of the first end to the second end of the first coupling 2 in the embodiment is uniform, and the first end and the second end of the first coupling 2 are in smooth transition connection; the thickness of the first end of the second coupling 4 is uniform from the second end, and the first end and the second end of the second coupling 4 are in smooth transition connection. The first coupling 2 and the second coupling 4 provided by the embodiment have uniform thickness, and the coupling forming process with the structure is simple and low in cost.
Further, when the second end of the end-inserted positioning ring 11 of the first pipe body 1 is coaxially butted with the second pipe body 3, a gap exists between the second end of the first coupling 2 and the second end of the second coupling 4, and a welding seam is constructed at the gap.
Referring to fig. 1, the end of the first pipeline body 1 is inserted into the second end of the positioning ring 11 and is coaxially connected with the end of the second pipeline body 3 in a butt joint manner, so that the joint of the first pipeline body 1 and the second pipeline body 3 is attached to the inner wall surface of the positioning ring 11; further, there is a gap between the second end of the first collar 2 and the second end of the second collar 4, and a welding seam is formed at the gap, that is, the second end of the first collar 2 and the second end of the second collar 4 are connected together by welding, so that the positioning ring 11 is placed inside the joint of the first collar 2 and the second collar 4. In this embodiment, a gap exists between the second end of the first coupling 2 and the second end of the second coupling 4, so as to facilitate welding, and also avoid welding from affecting the performance of the first coupling 2 and the second coupling 4, thereby enhancing sealing.
Further, the end of the first pipe body 1 in this embodiment protrudes beyond the second end of the first collar 2, and the end of the second pipe body 3 is flush with the second end of the second collar 4.
Referring to fig. 2, a first coupling 2 is sleeved on an outer wall surface of a first pipeline body 1, a first end of the first coupling 2 is welded to the first pipeline body 1, a second end of the first coupling 2 is bent outward to form a first annular space 6 with the first pipeline body 1, and an end of the first pipeline body 1 extends out of the second end of the first coupling 2, that is, a space exists between the end of the first pipeline body 1 and the second end of the first coupling 2; referring to fig. 3, the second coupling 4 is sleeved on the outer wall surface of the second pipe body 3, a first end of the second coupling 4 is welded to the second pipe body 3, a second end of the second coupling 4 is bent outward to form a second annular space 7 with the second pipe body 3, and the second end of the second coupling 4 is flush with the end of the second pipe body 3.
Further, when the second end of the end portion inserting positioning ring 11 of the first pipeline body 1 is in butt joint with the end portion of the second pipeline body 3, the first coupling 2 and the second coupling 4 are in external coaxial butt joint at the butt joint of the first pipeline body 1 and the second pipeline body 3, the second end of the first coupling 2 is not in contact with the second end of the second coupling 4, a gap is formed between the second end of the first coupling 2 and the second coupling 4, a welding seam is conveniently constructed at the gap, the first coupling 2 and the second coupling 4 can be connected, meanwhile, the performance that the first coupling 2 and the second coupling 4 are damaged by welding can be avoided, and sealing is further enhanced.
This embodiment is through unanimous with the whole thickness of first coupling 2, and the whole thickness of second coupling 4 is unanimous, and has the clearance between the second end of first coupling 2 and the second of second coupling 4, and first coupling 2 and/or second coupling 4 ftractures because of intensity is not enough when avoiding welding, helps realizing the connection of first coupling 2 and second coupling 4 through the welding.
On the basis of the above embodiment, the length of the protruding portion of the second end of the positioning ring 11 protruding from the end of the second pipe body 3 is smaller than the length of the connecting portion of the positioning ring 11 and the outer wall surface of the second pipe body 3.
Referring to fig. 1, a first end of the positioning ring 11 is connected to an outer wall surface of the second pipeline body 3, a second end of the positioning ring 11 extends out of an end portion of the second pipeline body 3, that is, there is a gap between the second end of the positioning ring 11 and the end portion of the second pipeline body 3, the end portion of the first pipeline body 1 is inserted into the second end of the positioning ring 11 and is in butt joint with the end portion of the second pipeline body 3, because the coated pipeline has a certain rigidity, the length of the extending portion of the second end of the positioning ring 11 extending out of the end portion of the second pipeline body 3 is smaller than the length of the connecting portion of the positioning ring 11 and the outer wall surface of the second pipeline body 3, which is beneficial to inserting the end portion of the first pipeline body 1 into the second end of the positioning ring 11, and can ensure the stability of the connecting position of the first end of the positioning ring 11 and the second pipeline body 3 in the inserting process, thereby enhancing the sealing.
In a preferred embodiment, the extension of the retaining ring 11 is in the range of 5-10mm in length. Specifically, referring to fig. 1 and 3, a first end of the positioning ring 11 is connected to the outer wall surface of the second pipe body 3, and a second end of the positioning ring 11 extends 5-10mm beyond the end of the second pipe body 3, that is, the distance from the second end of the positioning ring 11 to the end of the second pipe body 3 ranges from 5-10mm, and may be 5mm, 7mm, 8mm, 10mm, and the like.
The length of the protruding portion of the positioning ring 11 in this embodiment may affect the end of the first pipe body 1 inserted into the second end of the positioning ring 11, and may also affect the sealing performance of the joint between the first pipe body 1 and the second pipe body 3; specifically, when the length of the extended portion of the positioning ring 11 is short, the end of the first pipeline body 1 is inserted into the second end of the positioning ring 11, but when the extended portion is short, the distance from the butt joint of the first pipeline body 1 and the second pipeline body 3 to the second end of the positioning ring 11 is short, and the sealing effect is poor; when the length of the extending part of the positioning ring 11 is long, the sealing performance of the butt joint of the first pipeline body 1 and the second pipeline body 3 is good, but the distance of inserting the second end of the positioning ring 11 into the end part of the first pipeline body 1 is long, and the insertion is inconvenient.
In the embodiment, when considering environmental factors in the field construction process and inconvenient large adjustment of the pipelines at two sides, the length range of the extension part of the positioning ring 11 is set to be 5-10mm, so that the butt joint connection between the adjacent pipelines is conveniently realized, and the sealing effect of the butt joint of the adjacent pipelines can also be ensured.
On the basis of the above embodiment, the second end of the first coupling 2 in this embodiment is provided with a first chamfer 8, the second end of the second coupling 4 is provided with a second chamfer 9, and the first chamfer 8 and the second chamfer 9 are oppositely arranged.
Referring to fig. 2, a second end of the first coupling 2 is provided with a first chamfer 8; referring to fig. 3, the second end of the second collar 4 is provided with a second chamfer 9; further, the first chamfer 8 and the second chamfer 9 are oppositely arranged, when the second end of the positioning ring 11 inserted into the first pipe body 1 is in butt joint with the end of the second pipe body 3, a gap exists between the first coupling 2 and the second coupling 4, further, the first chamfer 8 of the first coupling 2 and the second chamfer 9 of the second coupling 4 form a funnel-shaped spatial cross section, and the first coupling 2 and the second coupling 4 are connected by welding.
On the basis of the above embodiment, the seal member 5 is pressed between the first pipe body 1 and the second pipe body 3; the sealing element 5 is connected to the end face of the first pipe body 1, the end face of the second pipe body 3 or the inner wall of the positioning ring 11 corresponding to the end of the second pipe body 3.
The present embodiment provides the sealing member 5 between the first pipe body 1 and the second pipe body 3, and when the second end of the positioning ring 11 inserted into the end of the first pipe body 1 is in butt joint with the end of the second pipe body 3, the sealing member 5 can be squeezed between the end of the first pipe body 1 and the end of the second pipe body 3. Specifically, the sealing element 5 may be connected to an end surface of the first pipe body 1, or may be connected to an end surface of the second pipe body 3, or connected to a corresponding position between an inner wall of the positioning ring 11 and an end of the second pipe body 3, and when the end of the first pipe body 1 is inserted into the second end of the positioning ring 11, the sealing element 5 is pressed between the end of the first pipe body 1 and the end of the second pipe body 3, so as to increase the sealing effect.
In a preferred embodiment, the end face of the second pipe body 3 is provided with a third chamfer 10, and the seal 5 is provided at the third chamfer 10. Specifically, referring to fig. 3, the third chamfer 10 is inclined outward from the end of the second pipe body 3 to the first end of the second coupling 4, so that a groove-shaped gap is formed between the second pipe body 3 and the positioning ring 11, and the sealing element 5 is conveniently connected and disposed in the gap, thereby enhancing the sealing effect at the butt joint of the first pipe body 1 and the second pipe body 3.
In this embodiment, the sealing member 5 comprises a sealing ring or a sealant or a sealing material. The present embodiment does not specifically limit the sealing member 5, and sealing between the first pipe body 1 and the second pipe body 3 may be achieved.
On the basis of the above embodiments, the sealing member 5 is also disposed between the outer wall surface of the first pipe body 1 and/or the outer wall surface of the second pipe body 3 and the positioning ring 11 in this embodiment.
In one embodiment, a sealing element is arranged between the first pipeline body 1 and the second pipeline body 3, and a sealing element 5 is also arranged between the outer wall surface of the first pipeline body 1 and the positioning ring 11, so that oil and gas in the pipeline are prevented from seeping out and flowing into the first annular space 6 through the joint of the first pipeline body 1 and the positioning ring 11, and sealing is enhanced.
In another embodiment, a sealing element is arranged between the first pipeline body 1 and the second pipeline body 3, and a sealing element 5 is also arranged between the outer wall surface of the second pipeline body 3 and the positioning ring 11, so that oil and gas in the pipeline are prevented from seeping out from the joint of the first pipeline body 1 and the second pipeline body 3 and flowing into the second annular space 7 through the joint between the second pipeline body 3 and the positioning ring 11, and sealing is enhanced.
In still another embodiment, a sealing element is disposed between the first pipeline body 1 and the second pipeline body 3, and a sealing element 5 is disposed between the outer wall surface of the second pipeline body 3 and the positioning ring 11 and between the first pipeline body 1 and the positioning ring 11, so as to prevent oil and gas in the pipeline from seeping out from the joint of the first pipeline body 1 and the second pipeline body 3 to the first annular space 6 and the second annular space 7 through the joint of the first pipeline body 1 and the positioning ring 11 and the joint of the second pipeline body 3 and the positioning ring 11, thereby achieving enhanced sealing.
In this embodiment, a sealing member 5 is disposed between the first pipeline body 1 and the second pipeline body 3, and the sealing member 5 is disposed between the outer wall surface of the first pipeline body 1 and/or the outer wall surface of the second pipeline body 3 and the positioning ring 11, wherein the two sealing members may be the same or different and may be disposed according to actual requirements.
In this embodiment, the setting position of the sealing member 5 and the selection of the sealing member 5 at each setting position are not particularly limited, so that the oil and gas in the pipe can be prevented from seeping outwards through the joint of the first pipe and the second pipe and flowing into the first annular space 6 or the second annular space 7, and the sealing effect can be enhanced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A coated pipe butt joint structure, comprising: the pipe joint comprises a first pipe body, a second pipe body, a first coupling, a second coupling, a positioning ring and a sealing element, wherein the first end of the first coupling is connected with the outer wall surface of the first pipe body, the first end of the second coupling is connected with the outer wall surface of the second pipe body, and the second end of the first coupling and the second end of the second coupling are coaxially connected outside the first pipe body and the second pipe body;
the first end of the positioning ring is connected to the outer wall surface of the second pipeline body, the second end of the positioning ring extends out of the end of the second pipeline body, the end of the first pipeline body is inserted into the second end of the positioning ring and is in coaxial butt joint with the second pipeline body, and the sealing element is arranged between the first pipeline body and the second pipeline body.
2. The coated pipe butt connection of claim 1, wherein the second end of the first collar forms a first annular space with the first pipe body and the second end of the second collar forms a second annular space with the second pipe body.
3. The coated pipe butt joint structure of claim 2, wherein the first collar has a uniform thickness from the first end to the second end, and the first end and the second end of the first collar are joined in a smooth transition; the first end to the second end thickness of second coupling is even, just the first end and the smooth transition of second end of second coupling are connected.
4. The coated pipe butt joint structure as recited in claim 1, wherein when the end of the first pipe body is inserted into the second end of the positioning ring to coaxially abut the second pipe body, a gap exists between the second end of the first coupling and the second end of the second coupling, and a weld is configured at the gap.
5. The coated pipe butt connection structure of claim 1, wherein an end of the first pipe body protrudes out of the second end of the first collar, and an end of the second pipe body is flush with the second end of the second collar.
6. The coated pipe butt joint structure according to claim 1, wherein a length of a portion of the second end of the positioning ring protruding beyond the end of the second pipe body is smaller than a length of a portion of the positioning ring connecting with the outer wall surface of the second pipe body.
7. The butt joint structure of coated pipes according to any one of claims 1 to 6, wherein the second end of the first collar is provided with a first chamfer, the second end of the second collar is provided with a second chamfer, and the first chamfer and the second chamfer are oppositely arranged.
8. The coated pipe butt joint structure according to any one of claims 1 to 6, wherein the sealing member is interposed between the first pipe body and the second pipe body; the sealing element is connected to the end face of the first pipeline body, the end face of the second pipeline body or the corresponding position of the inner wall of the positioning ring and the end part of the second pipeline body.
9. The coated pipe butt joint structure according to claim 8, wherein the end face of the second pipe body is provided with a third chamfer, and the sealing member is provided at the third chamfer.
10. The coated pipe butt joint structure according to claim 8, wherein a sealing member is also provided between the outer wall surface of the first pipe body and/or the outer wall surface of the second pipe body and the positioning ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121847923.2U CN215488144U (en) | 2021-08-09 | 2021-08-09 | Butt joint connecting structure for coating pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121847923.2U CN215488144U (en) | 2021-08-09 | 2021-08-09 | Butt joint connecting structure for coating pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215488144U true CN215488144U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121847923.2U Active CN215488144U (en) | 2021-08-09 | 2021-08-09 | Butt joint connecting structure for coating pipelines |
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| Country | Link |
|---|---|
| CN (1) | CN215488144U (en) |
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2021
- 2021-08-09 CN CN202121847923.2U patent/CN215488144U/en active Active
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