CN210779941U - MPP pipe connection structure - Google Patents
MPP pipe connection structure Download PDFInfo
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- CN210779941U CN210779941U CN201922002326.9U CN201922002326U CN210779941U CN 210779941 U CN210779941 U CN 210779941U CN 201922002326 U CN201922002326 U CN 201922002326U CN 210779941 U CN210779941 U CN 210779941U
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Abstract
An MPP pipe connection structure belongs to the technical field of pipelines. The first MPP pipe and the second MPP pipe are connected through a flange piece, and the flange piece comprises a first flange piece and a second flange piece which are fixedly connected through bolts; when the first MPP pipe and the first flange part are in threaded connection, the first MPP pipe and the first flange part are in radial interference seal fit through a sealing conical surface and are in axial interference seal fit through a concave-convex conical surface; when the second MPP pipe and the second flange part are in threaded connection, the sealing conical surfaces are in radial interference sealing fit, and the concave-convex conical surfaces are in axial interference sealing fit. Above-mentioned MPP pipe connection structure, when connecting, sealed conical surface and sealed conical surface radial interference seal, unsmooth conical surface axial interference seal, its waterproof sealing effect is good, and can undertake bigger axial tension and compressive load, has strengthened the resistance of pipeline to soil load, has prolonged its life. And the connection is simple and convenient, the rapid connection of the MPP pipe can be realized, and the construction efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the pipeline, specifically be a MPP union coupling structure.
Background
The MPP pipe is also called as an MPP power cable protection pipe, has excellent electrical insulation, higher thermal deformation temperature and low-temperature impact performance and higher tensile and compressive performance than HDPE, and is suitable for high-voltage transmission line cable calandria pipes below 10 KV. The existing MPP pipe has many connection modes, and some connection modes have good strength but complex process; some connecting processes are simple, but the connecting and sealing effects are poor.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model aims to design provides a MPP union coupling structure's technical scheme, and its waterproof sealing effect is good, and can undertake bigger axial tension and compressive load, has strengthened the resistance of pipeline to soil load, has prolonged its life. And the connection is simple and convenient, and the construction efficiency is high.
The MPP pipe connecting structure comprises a first MPP pipe and a second MPP pipe, and is characterized in that the first MPP pipe and the second MPP pipe are connected through flange parts, and the flange parts comprise a first flange part and a second flange part which are fixedly connected through bolts; the inner wall of the end part of the first MPP pipe is provided with a first MPP sealing conical surface, the inner end of the first MPP sealing conical surface is provided with a first MPP positioning groove, and a first MPP internal thread is arranged on the first MPP sealing conical surface; a first flange sealing conical surface is correspondingly arranged on the left side of the first flange part, a left end positioning bulge is arranged at the outermost end of the first flange sealing conical surface, and left end external threads are arranged on the first flange sealing conical surface; when the first MPP pipe and the first flange piece are in threaded connection, the first MPP sealing conical surface and the first flange sealing conical surface are in radial interference sealing fit, and the first MPP positioning groove and the left end positioning bulge are in axial interference sealing fit through concave-convex conical surfaces; a second MPP sealing conical surface is arranged on the inner wall of the end part of the second MPP pipe, a second MPP positioning groove is arranged at the inner end of the second MPP sealing conical surface, and a second MPP internal thread is arranged on the second MPP sealing conical surface; a second flange sealing conical surface is correspondingly arranged on the right side of the second flange part, a right end positioning bulge is arranged at the outermost end of the second flange sealing conical surface, and a right end external thread is arranged on the second flange sealing conical surface; when the second MPP pipe and the second flange part are in threaded connection, the second MPP sealing conical surface and the second flange sealing conical surface are in radial interference sealing fit, and the second MPP positioning groove and the right end positioning bulge are in axial interference sealing fit through the concave-convex conical surface.
The MPP pipe connecting structure is characterized in that a first flange plate and a first bolt mounting hole are arranged at the right end of a first flange part, a first flange plate sealing inner conical surface is arranged on the inner wall of the right end part, and a first flange plate positioning groove and a first flange plate sealing ring clamping groove are formed in the inner end of the first flange plate sealing inner conical surface; the left end of the second flange part is provided with a second flange and a second bolt mounting hole, the inner wall of the left end part is provided with a second flange sealing inner conical surface, and the inner end of the second flange sealing inner conical surface is provided with a second flange positioning bulge and a second flange sealing ring clamping groove; when the flange plates are locked and connected, the inner sealing conical surface of the first flange plate and the inner sealing conical surface of the second flange plate are in radial interference sealing fit through conical surfaces, the positioning protrusions of the first flange plate and the positioning protrusions of the second flange plate are in axial interference sealing through concave-convex conical surfaces, the sealing rings are installed in clamping grooves formed by the clamping grooves of the sealing rings of the first flange plate and the clamping grooves of the sealing rings of the second flange plate, and the first bolt mounting hole and the second bolt mounting hole are in locking connection through bolts.
Above-mentioned MPP pipe connection structure, when connecting, sealed conical surface and sealed conical surface radial interference seal, unsmooth conical surface axial interference seal, its waterproof sealing effect is good, and can undertake bigger axial tension and compressive load, has strengthened the resistance of pipeline to soil load, has prolonged its life. And the connection is simple and convenient, the rapid connection of the MPP pipe can be realized, and the construction efficiency is high.
Drawings
Fig. 1 is a schematic view of the split structure of the present invention;
fig. 2 is a schematic structural view of a first MPP pipe according to the present invention;
fig. 3 is a schematic structural view of a first flange member of the present invention;
fig. 4 is a schematic structural view of a second flange member of the present invention;
fig. 5 is a schematic structural view of a second MPP pipe according to the present invention;
FIG. 6 is a schematic view of the overall structure of the present invention;
in the figure: 1-a first MPP pipe, 101-a first MPP positioning groove, 102-a first MPP internal thread and 103-a first MPP sealing conical surface; 2-a first flange part, 201-a left end positioning bulge, 202-a left end external thread, 203-a first flange sealing conical surface, 204-a first flange plate, 205-a first bolt mounting hole, 206-a first flange plate positioning groove, 207-a first flange plate sealing ring clamping groove and 208-a first flange plate sealing inner conical surface; 3-a second flange part, 301-a right end positioning bulge, 302-a right end external thread, 303-a second flange sealing conical surface, 304-a second flange plate, 305-a second bolt mounting hole, 306-a second flange plate positioning bulge, 307-a second flange plate sealing ring clamping groove and 308-a second flange plate sealing inner conical surface; 4-a second MPP pipe, 401-a second MPP positioning groove, 402-a second MPP internal thread and 403-a second MPP sealing conical surface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the figure, the MPP pipe connecting structure comprises a first MPP pipe 1 and a second MPP pipe 4, wherein the first MPP pipe 1 and the second MPP pipe 4 are connected through flange pieces, and the flange pieces comprise a first flange piece 2 and a second flange piece 3 which are fixedly connected through bolts; a first MPP sealing conical surface 103 is arranged on the inner wall of the end part of the first MPP pipe 1, a first MPP positioning groove 101 is arranged at the inner end of the first MPP sealing conical surface 103, and a first MPP internal thread 102 is arranged on the first MPP sealing conical surface 103; a first flange sealing conical surface 203 is correspondingly arranged on the left side of the first flange part 2, a left end positioning bulge 201 is arranged at the outermost end of the first flange sealing conical surface 203, and a left end external thread 202 is arranged on the first flange sealing conical surface 203; when the first MPP pipe 1 and the first flange part 2 are in threaded connection, the first MPP sealing conical surface 103 and the first flange sealing conical surface 203 are in radial interference sealing fit, and the first MPP positioning groove 101 and the left end positioning bulge 201 are in axial interference sealing fit through concave-convex conical surfaces; a second MPP sealing conical surface 403 is arranged on the inner wall of the end part of the second MPP pipe 4, a second MPP positioning groove 401 is arranged at the inner end of the second MPP sealing conical surface 403, and a second MPP internal thread 402 is arranged on the second MPP sealing conical surface 403; a second flange sealing conical surface 303 is correspondingly arranged on the right side of the second flange piece 3, a right end positioning bulge 301 is arranged at the outermost end of the second flange sealing conical surface 303, and a right end external thread 302 is arranged on the second flange sealing conical surface 303; when the second MPP pipe 4 and the second flange 3 are in threaded connection, the second MPP sealing conical surface 403 and the second flange sealing conical surface 303 are in radial interference sealing fit, and the second MPP positioning groove 401 and the right end positioning protrusion 301 are in axial interference sealing fit through concave-convex conical surfaces. First MPP pipe 1, the spiro union cooperation of first flange spare 2 spiro union, second MPP pipe 4, the 3 spiro union cooperations of second flange spare, during threaded connection, sealed conical surface and the radial interference seal of sealed conical surface, unsmooth conical surface axial interference seal, its sealed water-proof effects is good, and can undertake bigger axial tension and compressive load, has strengthened the resistance of pipeline to soil load, has prolonged its life.
Further, a first flange 204 and a first bolt mounting hole 205 are arranged at the right end of the first flange part 2, a first flange sealing inner conical surface 208 is arranged on the inner wall of the right end, and a first flange positioning groove 206 and a first flange sealing ring clamping groove 207 are arranged at the inner end of the first flange sealing inner conical surface 208; a second flange plate 304 and a second bolt mounting hole 305 are arranged at the left end of the second flange part 3, a second flange plate sealing inner conical surface 308 is arranged on the inner wall of the left end part, and a second flange plate positioning bulge 306 and a second flange plate sealing ring clamping groove 307 are arranged at the inner end of the second flange plate sealing inner conical surface 308; when the flange plates are locked and connected, the first flange plate sealing inner conical surface 208 and the second flange plate sealing inner conical surface 308 are in radial interference sealing fit through conical surfaces, the first flange plate positioning groove 206 and the second flange plate positioning protrusion 306 are in axial interference sealing through concave-convex conical surfaces, the sealing ring 6 is installed in a clamping groove formed by the first flange plate sealing ring clamping groove 207 and the second flange plate sealing ring clamping groove 307, and the first bolt installation hole 205 and the second bolt installation hole 305 are locked and connected through the bolt 5. The sealing ring 6 serves for further sealing. The end parts of the first flange part 2 and the second flange part 3 are in plug-in fit, the sealing conical surface and the sealing conical surface are in radial interference sealing, the concave-convex conical surface is in axial interference sealing, the sealing waterproof effect is good, larger axial tension and compression load can be borne, the resistance of the pipeline to soil load is enhanced, and the service life of the pipeline is prolonged.
The utility model discloses the assembly method is as follows: respectively with first MPP pipe 1, the spiro union cooperation of first flange spare 2 spiro union, second MPP pipe 4, the spiro union cooperation of second flange spare 3, then put into sealing washer 6 in first ring flange sealing washer draw-in groove 207, again with the cooperation of pegging graft first flange spare 2, the 3 tip of second flange spare, finally through bolt 5 with first bolt mounting hole 205, second bolt mounting hole 305 locking connection, the assembly is accomplished.
The above technical solutions describe the present invention in detail, but do not limit the scope of the present invention. It should be understood that any obvious alterations or substitutions to the present invention by those skilled in the art based on the teachings of the present invention should also be considered as the scope of the present invention.
Claims (2)
1. An MPP pipe connecting structure comprises a first MPP pipe (1) and a second MPP pipe (4), and is characterized in that the first MPP pipe (1) and the second MPP pipe (4) are connected through flange pieces, and each flange piece comprises a first flange piece (2) and a second flange piece (3) which are fixedly connected through bolts; a first MPP sealing conical surface (103) is arranged on the inner wall of the end part of the first MPP pipe (1), a first MPP positioning groove (101) is arranged at the inner end of the first MPP sealing conical surface (103), and a first MPP internal thread (102) is arranged on the first MPP sealing conical surface (103); a first flange sealing conical surface (203) is correspondingly arranged on the left side of the first flange part (2), a left end positioning bulge (201) is arranged at the outermost end of the first flange sealing conical surface (203), and a left end external thread (202) is arranged on the first flange sealing conical surface (203); when the first MPP pipe (1) and the first flange piece (2) are in threaded connection, the first MPP sealing conical surface (103) and the first flange sealing conical surface (203) are in radial interference sealing fit, and the first MPP positioning groove (101) and the left end positioning bulge (201) are in axial interference sealing fit through concave-convex conical surfaces; a second MPP sealing conical surface (403) is arranged on the inner wall of the end part of the second MPP pipe (4), a second MPP positioning groove (401) is arranged at the inner end of the second MPP sealing conical surface (403), and a second MPP internal thread (402) is arranged on the second MPP sealing conical surface (403); a second flange sealing conical surface (303) is correspondingly arranged on the right side of the second flange piece (3), a right end positioning bulge (301) is arranged at the outermost end of the second flange sealing conical surface (303), and a right end external thread (302) is arranged on the second flange sealing conical surface (303); when the second MPP pipe (4) and the second flange piece (3) are in threaded connection, the second MPP sealing conical surface (403) and the second flange sealing conical surface (303) are in radial interference sealing fit, and the second MPP positioning groove (401) and the right end positioning bulge (301) are in axial interference sealing fit through concave-convex conical surfaces.
2. The MPP pipe connecting structure as set forth in claim 1, wherein the first flange (204) and the first bolt mounting hole (205) are disposed at the right end of the first flange member (2), the inner wall of the right end is provided with a first flange sealing inner conical surface (208), the inner end of the first flange sealing inner conical surface (208) is provided with a first flange positioning groove (206) and a first flange sealing ring clamping groove (207); a second flange (304) and a second bolt mounting hole (305) are arranged at the left end of the second flange part (3), a second flange sealing inner conical surface (308) is arranged on the inner wall of the left end part, and a second flange positioning bulge (306) and a second flange sealing ring clamping groove (307) are arranged at the inner end of the second flange sealing inner conical surface (308); when the flange plates are locked and connected, the inner conical surface (208) of the first flange plate seal and the inner conical surface (308) of the second flange plate seal are in radial interference seal fit through conical surfaces, the first flange plate positioning groove (206) and the second flange plate positioning protrusion (306) are in axial interference seal through concave-convex conical surfaces, the sealing ring (6) is installed in the clamping groove formed by the first flange plate sealing ring clamping groove (207) and the second flange plate sealing ring clamping groove (307), and the first bolt mounting hole (205) and the second bolt mounting hole (305) are in locking connection through the bolt (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922002326.9U CN210779941U (en) | 2019-11-19 | 2019-11-19 | MPP pipe connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922002326.9U CN210779941U (en) | 2019-11-19 | 2019-11-19 | MPP pipe connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210779941U true CN210779941U (en) | 2020-06-16 |
Family
ID=71040206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922002326.9U Active CN210779941U (en) | 2019-11-19 | 2019-11-19 | MPP pipe connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210779941U (en) |
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2019
- 2019-11-19 CN CN201922002326.9U patent/CN210779941U/en active Active
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