CN214535034U - Loop flange lining elbow for oilfield pipeline - Google Patents
Loop flange lining elbow for oilfield pipeline Download PDFInfo
- Publication number
- CN214535034U CN214535034U CN202120641649.7U CN202120641649U CN214535034U CN 214535034 U CN214535034 U CN 214535034U CN 202120641649 U CN202120641649 U CN 202120641649U CN 214535034 U CN214535034 U CN 214535034U
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- lining
- elbow
- flange
- loop
- elbow body
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Abstract
The utility model relates to the field of pipeline connecting pieces, and discloses a loop flange lining elbow for an oil field pipeline, which comprises an elbow body, a lining layer and a loop flange plate; the central hole of the loop flange plate is sleeved on the periphery of the elbow body and a mounting gap is reserved; the two ends of the elbow body are provided with annular flanges; the inner liner comprises a ring surface liner and an end surface liner, the ring surface liner is uniformly distributed on the inner surface of the wall of the elbow body, and the end surface liner is uniformly distributed on the outer end surface of the wall of the elbow body and the outer side surface of the annular flange. The utility model adopts the loop type flange, which does not need welding, has simple installation and low manufacturing cost; the elbow is provided with the lining layer, and the lining layer of the inner ring surface is combined with the lining layer of the outer end surface, so that the omnibearing corrosion prevention is realized without dead angles, and the potential safety hazard is fundamentally eliminated; the materials are selected accurately, rust prevention is in place, and the service performance and the service life are ensured.
Description
Technical Field
The utility model relates to a pipe connection spare field, concretely relates to loop flange inside lining elbow for oil field pipeline.
Background
Elbows play a very important and irreplaceable role in the connection of oilfield pipelines. However, some problems of the common elbow are found in the oil field production practice, for example, the flange on the elbow is usually in a fixed welding type, when the elbow is connected and installed with a pipeline, the requirement on installation precision is high, the bolt holes of the flange are dislocated due to slight deviation in manufacturing, the installation cannot be performed, the welding workload is large, and the manufacturing cost is high; for another example, when corrosion prevention is performed, the lining is added on the main pipeline, and the corrosion prevention of the elbow is often neglected, so that potential safety hazards are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a loop flange inside lining elbow for oil field pipeline.
The technical scheme is as follows: comprises an elbow body, an inner lining layer and a loop flange plate; the central hole of the loop flange plate is sleeved on the periphery of the elbow body and is provided with an installation gap, the installation gap enables the loop flange plate to move back and forth and rotate circumferentially along the elbow body, and flange bolt holes are uniformly distributed on the surface of the loop flange plate in the circumferential direction; the two ends of the elbow body are provided with annular flanges, the annular flanges are perpendicular to the axial surface of the end part of the wall of the elbow body, and the peripheral height of the annular flanges is positioned above the installation gap of the loop flange plate and below the flange bolt hole; the lining layer comprises a ring surface lining layer and an end surface lining layer, the ring surface lining layer is uniformly distributed on the inner surface of the wall of the elbow body, and the end surface lining layer is uniformly distributed on the outer end surface of the wall of the elbow body and the outer side surface of the annular flange; the specification of the loop flange plate is matched with that of the pipeline flange plate at the end part of the connected pipeline.
The above technical solution can be further optimized as follows:
the lining pipe is adopted as the lining layer of the ring surface.
The lining is arranged on the end face lining in a mode of flanging the end part of the lining pipe.
The lining pipe is made of ultra-high molecular weight polyethylene.
The inner liner layer adopts an ultrahigh molecular weight polyethylene thermoplastic coating.
The material of the loop flange plate is stainless steel.
And the outer surface of the wall of the elbow body, the surface of the loop flange plate and the inner side surface of the annular flange are coated with antirust paint.
Compared with the prior art, the utility model discloses mainly have following beneficial technological effect:
1. the loop type flange is adopted, welding is not needed, the installation is simple and convenient, and the manufacturing cost is low.
2. The elbow is provided with the lining layer, and the inner ring surface lining layer is combined with the outer end surface lining layer, so that the all-round corrosion prevention is realized, no dead angle is formed, and the potential safety hazard is fundamentally eliminated.
3. The materials are selected accurately, rust prevention is in place, and the service performance and the service life are ensured.
Drawings
FIG. 1 is a schematic view of the structure layout of the present invention;
in the figure: 1-pipeline flange plate, 2-pipeline flange bolt hole, 3-flange bolt hole, 4-loop flange plate, 5-elbow body, 6-elbow body wall, 7-annular lining layer, 8-installation gap, 9-central line, 10-annular flange, 11-end surface lining layer, 12-pipeline annular surface lining layer, 13-pipeline end surface lining layer and 14-connected pipeline.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings.
Example 1
See fig. 1. A loop flange inside lining elbow for oil field pipeline, includes elbow body 5, inside lining layer and loop ring flange 4. The central hole of the loop flange plate 4 is sleeved on the periphery of the elbow body 5, and a mounting gap 8 is reserved, the mounting gap 8 enables the loop flange plate 4 to move back and forth and rotate circumferentially along the elbow body 5, and the flange bolt holes 3 are uniformly distributed on the disc surface of the loop flange plate 4 in the circumferential direction. The two ends of the elbow body 5 are provided with annular flanges 10, the annular flanges 10 are vertical to the axial surface of the end part of the elbow body wall 6, and the peripheral height of the annular flanges 10 is positioned above the mounting gap 8 of the loop flange plate 4 and below the flange bolt holes 3. The inner liner comprises a ring surface liner 7 and an end surface liner 11, the ring surface liner 7 is uniformly distributed on the inner surface of the elbow body wall 6, and the end surface liner 11 is uniformly distributed on the outer end surface of the elbow body wall 6 and the outer side surface of the annular flange 10. The specification of the loop flange 4 is matched with the specification of the pipeline flange 1 at the end part of the connected pipeline 14.
Example 2
See fig. 1. A loop flange inner lining elbow for an oil field pipeline, on the basis of the technical scheme recorded in the embodiment 1, when the inner diameter of an elbow body 5 is larger, an inner lining pipe is adopted as an annular lining layer 7; the end surface lining 11 adopts a lining layer arranged in a flanging mode at the end part of the lining pipe; the lining pipe is made of ultra-high molecular weight polyethylene with excellent comprehensive performance. The ultra-high molecular weight polyethylene (UHMWPE for short) is unbranched linear polyethylene with the molecular weight of more than 150 ten thousand, and has super corrosion resistance, wear resistance, low temperature resistance and aging resistance.
Example 3
See fig. 1. A loop flange inner lining elbow for an oil field pipeline is characterized in that on the basis of the technical scheme recorded in embodiment 1, when the inner diameter of an elbow body 5 is small, an ultra-high molecular weight polyethylene thermoplastic coating is adopted as an inner lining layer; the thermoplastic property of the ultra-high molecular weight polyethylene is utilized, and the ultra-high molecular weight polyethylene is heated to a molten state and then deposited on the surface of the elbow to form a coating.
Example 4
See fig. 1. A loop flange inner lining elbow for an oil field pipeline is characterized in that on the basis of the technical scheme recorded in embodiment 1, a loop flange plate 4 is made of stainless steel; the outer surface of the elbow body wall 6, the surface of the loop flange 4 and the inner side surface of the annular flange 10 are coated with antirust paint, so that the good service performance of the elbow body wall is ensured, and the service life of the elbow body wall is prolonged.
The basic working principle of the utility model is as follows:
the loop flange lining elbow is manufactured according to the technical scheme, the loop flange plate 4 is sleeved on the periphery of the elbow body 5, and then the annular flanges 10 are welded at the two ends of the elbow body 5. When the elbow is in butt joint with the connected pipeline 14, the axial center lines of the end part of the elbow body 5 and the end part of the connected pipeline 14 are aligned, and the end surface lining layer 11 of the elbow body 5 is aligned and attached to the pipeline end surface lining layer 13; and rotating the loop flange plate 4 to align the flange bolt holes 3 on the loop flange plate 4 with the pipeline flange bolt holes 2, and finally, penetrating the flange bolt holes 3 and the pipeline flange bolt holes 2 by bolts and fastening by nuts.
Claims (7)
1. The utility model provides a lap joint flange inside lining elbow for oil field pipeline which characterized in that: comprises an elbow body, an inner lining layer and a loop flange plate; the central hole of the loop flange plate is sleeved on the periphery of the elbow body and is provided with an installation gap, the installation gap enables the loop flange plate to move back and forth and rotate circumferentially along the elbow body, and flange bolt holes are uniformly distributed on the surface of the loop flange plate in the circumferential direction; the two ends of the elbow body are provided with annular flanges, the annular flanges are perpendicular to the axial surface of the end part of the wall of the elbow body, and the peripheral height of the annular flanges is positioned above the installation gap of the loop flange plate and below the flange bolt hole; the lining layer comprises a ring surface lining layer and an end surface lining layer, the ring surface lining layer is uniformly distributed on the inner surface of the wall of the elbow body, and the end surface lining layer is uniformly distributed on the outer end surface of the wall of the elbow body and the outer side surface of the annular flange; the specification of the loop flange plate is matched with that of the pipeline flange plate at the end part of the connected pipeline.
2. The lap joint flange lining elbow for oilfield piping according to claim 1, wherein: the lining pipe is adopted as the lining layer of the ring surface.
3. The lap joint flange lining elbow for oilfield piping according to claim 2, wherein: the lining is arranged on the end face lining in a mode of flanging the end part of the lining pipe.
4. A lap joint flange lining elbow for oilfield piping according to claim 2 or 3, wherein: the lining pipe is made of ultra-high molecular weight polyethylene.
5. The lap joint flange lining elbow for oilfield piping according to claim 1, wherein: the inner liner layer adopts an ultrahigh molecular weight polyethylene thermoplastic coating.
6. The lap joint flange lining elbow for oilfield piping according to claim 1, wherein: the material of the loop flange plate is stainless steel.
7. The lap joint flange lining elbow for oilfield piping according to claim 1, wherein: and the outer surface of the wall of the elbow body, the surface of the loop flange plate and the inner side surface of the annular flange are coated with antirust paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120641649.7U CN214535034U (en) | 2021-03-30 | 2021-03-30 | Loop flange lining elbow for oilfield pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120641649.7U CN214535034U (en) | 2021-03-30 | 2021-03-30 | Loop flange lining elbow for oilfield pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214535034U true CN214535034U (en) | 2021-10-29 |
Family
ID=78266643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120641649.7U Active CN214535034U (en) | 2021-03-30 | 2021-03-30 | Loop flange lining elbow for oilfield pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214535034U (en) |
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2021
- 2021-03-30 CN CN202120641649.7U patent/CN214535034U/en active Active
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