CN219692542U - Butt joint sealing structure of natural gas transmission pipeline - Google Patents
Butt joint sealing structure of natural gas transmission pipeline Download PDFInfo
- Publication number
- CN219692542U CN219692542U CN202320633487.1U CN202320633487U CN219692542U CN 219692542 U CN219692542 U CN 219692542U CN 202320633487 U CN202320633487 U CN 202320633487U CN 219692542 U CN219692542 U CN 219692542U
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- ring
- flange
- fixedly connected
- connecting pipe
- sleeve
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000003345 natural gas Substances 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 210000001503 joint Anatomy 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a butt joint sealing structure of a natural gas transmission pipeline, which comprises a first connecting pipe, a second connecting pipe and a rubber pad, wherein one end of the first connecting pipe is fixedly connected with a first flange, the inner wall of the circumference of the first connecting pipe is fixedly connected with a first fixing ring, a plurality of round holes are formed in the first fixing ring in an equidistant manner, and limiting rods are sleeved in the round holes in a sliding manner. According to the utility model, through the arrangement of the first sleeve, the first rubber ring, the limiting rod, the spring and the metal sheet, the first sleeve is inserted into the first connection 1 and is in contact with the first rubber ring, the first rubber ring is extruded, the first rubber ring is retracted, the spring is compressed, the limiting rod pushes the baffle ring to retract, and due to the arrangement of the circumferential inclined plane of the first sleeve and the inclined groove of the first rubber ring, the first rubber ring 11 is deformed and changed to be extruded by the circumferential inner wall of the first connection pipe and the circumferential outer wall of the first sleeve, so that the first rubber ring, the second rubber ring and the metal sheet are tightly attached, and the primary sealing effect is achieved.
Description
Technical Field
The utility model relates to the technical field of natural gas pipelines, in particular to a butt joint sealing structure of a natural gas transmission pipeline.
Background
Natural gas is stored in underground porous rock stratum, including oil field gas, gas field gas, coal bed gas, mud pit gas, biological produced gas, etc. and is also used as high quality fuel and chemical material.
In the transportation process of natural gas, pipeline transportation is commonly used, pipelines are commonly used for welding connection or flange bolt connection in the laying and connecting process, when only flange bolt connection is used, the pipelines are easy to loosen after long-time use, so that the tightness is poor, the risk of natural gas leakage occurs, and therefore the butt joint sealing structure of the natural gas transmission pipeline is designed to improve the tightness of the natural gas pipeline.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a butt joint sealing structure of a natural gas transmission pipeline.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a natural gas transmission pipeline butt joint seal structure, includes first connecting pipe, second connecting pipe and rubber pad, first flange of first connecting pipe one end fixedly connected with, first fixed ring of first connecting pipe circumference inner wall fixedly connected with, the equidistance leaves on the first fixed ring and is equipped with a plurality of round holes, and is a plurality of all the slip cap is equipped with the gag lever post in the round hole, a plurality of the one end fixedly connected with same sheetmetal that the gag lever post is close to first flange, the sheetmetal is close to one side fixedly connected with first rubber circle of first flange, and the circumference internal surface size of first rubber circle, sheetmetal and first fixed ring equals.
Preferably, a plurality of stop bars are positioned on the circumferential surface between the first fixed ring and the metal sheet, and are sleeved with springs, and the other ends of the stop bars are fixedly connected with the same baffle ring.
Preferably, the first connecting pipe is characterized in that a second fixing ring is fixedly connected to the circumferential inner wall of the first connecting pipe close to the baffle ring, a second rubber ring is fixedly arranged on one side of the second fixing ring close to the baffle ring, and the sizes of the circumferential inner surfaces of the second rubber ring, the baffle ring and the second fixing ring are equal.
Preferably, a second flange is fixedly connected to one side of the second connecting pipe, a first sleeve is fixedly connected to one side, close to the second flange, of the circumferential inner wall of the second connecting pipe, two annular grooves are formed in the circumferential outer wall of the first sleeve in an equidistant manner, and rubber rings are arranged in the two annular grooves.
Preferably, a circumferential inclined plane is formed on one side, far away from the second flange, of the first sleeve, and a second sleeve is fixedly connected to the inner circumferential wall of one side, far away from the second flange, of the first sleeve.
Preferably, a chute matched with the circumferential inclined plane is formed on one side, close to the first flange, of the first rubber ring, and the circumferential outer surface of the second sleeve is matched with the circumferential inner surface of the second fixing ring.
Preferably, the first flange, the rubber pad and the second flange are fixedly connected through bolts.
The beneficial effects of the utility model are as follows:
1. this kind of natural gas transmission pipeline butt joint seal structure, through the setting of first sleeve, first rubber circle, gag lever post, spring and sheetmetal, first sleeve inserts the inside of first connection 1, will contact with first rubber circle, and extrude first rubber circle, make first rubber circle retreat, compress spring, and make the gag lever post promote the backing ring, because the setting of first telescopic circumference inclined plane and first rubber circle chute, make first rubber circle 11 take place the circumference inner wall of shape diversion first connecting tube and the extrusion of first telescopic circumference outer wall, make closely laminating between the three, reach primary sealed effect.
2. This kind of natural gas transmission pipeline butt joint seal structure through backing ring, second rubber circle, the telescopic setting of second, when first rubber circle 11 promotes the backing ring through the gag lever post, the backing ring will retreat and compress the second rubber circle for the second rubber circle takes place deformation, thereby extrudees the second sleeve, realizes the secondary seal effect.
Drawings
FIG. 1 is a schematic structural diagram of a butt-joint sealing structure for a natural gas transmission pipeline;
fig. 2 is a schematic structural diagram of an inner wall of a first connecting pipe of a butt-joint sealing structure of a natural gas transmission pipeline according to the present utility model;
fig. 3 is a schematic structural diagram of a cross section of a second connecting pipe of a butt-joint sealing structure of a natural gas transmission pipeline according to the present utility model.
In the figure: 1. a first connection pipe; 2. a second connection pipe; 3. a first flange; 4. a second flange; 5. a bolt; 6. a rubber pad; 7. a first fixing ring; 8. a limit rod; 9. a metal sheet; 10. a spring; 11. a first rubber ring; 12. a baffle ring; 13. a second fixing ring; 14. a second rubber ring; 15. a first sleeve; 16. an annular groove; 17. a rubber ring; 18. a circumferential bevel; 19. and a second sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, a natural gas transmission pipeline butt joint seal structure, including first connecting pipe 1, second connecting pipe 2 and rubber pad 6, first flange 3 of 1 one end fixedly connected with of first connecting pipe 1 circumference inner wall fixedly connected with first solid fixed ring 7, the equidistance leaves on the first solid fixed ring 7 and is equipped with a plurality of round holes, all slip cap is equipped with gag lever post 8 in a plurality of round holes, the one end fixedly connected with same sheetmetal 9 that a plurality of gag lever posts 8 are close to first flange 3, one side fixedly connected with first rubber circle 11 that sheetmetal 9 is close to first flange 3, and the circumference internal surface size of first rubber circle 11, sheetmetal 9 and first solid fixed ring 7 equals.
In the utility model, springs 10 are sleeved on the circumferential surfaces of the plurality of limit rods 8 between the first fixed ring 7 and the metal sheet 9, and the other ends of the plurality of limit rods 8 are fixedly connected with the same baffle ring 12.
In the utility model, the circumferential inner wall of the first connecting pipe 1 is fixedly connected with the second fixing ring 13 near the baffle ring 12, one side of the second fixing ring 13 near the baffle ring 12 is fixedly provided with the second rubber ring 14, and the circumferential inner surfaces of the second rubber ring 14, the baffle ring 12 and the second fixing ring 13 are equal in size, so that the first sleeve 15 can be smoothly and tightly inserted.
According to the utility model, one side of the second connecting pipe 2 is fixedly connected with the second flange 4, one side, close to the second flange 4, of the circumferential inner wall of the second connecting pipe 2 is fixedly connected with the first sleeve 15, the circumferential outer wall of the first sleeve 15 is equidistantly separated from the two annular grooves 16, rubber rings 17 are arranged in the two annular grooves 16, and the two rubber rings 17 are arranged, so that the circumferential outer wall of the first sleeve 15 can be more tightly attached to the circumferential inner wall of the first connecting pipe 1, and the tightness between the first connecting pipe 1 and the second connecting pipe 2 is improved.
In the utility model, a circumferential inclined plane 18 is arranged on one side of the first sleeve 15 far away from the second flange 4, and a second sleeve 19 is fixedly connected to the circumferential inner wall of one side of the first sleeve 15 far away from the second flange 4.
In the utility model, the inclined groove matched with the circumferential inclined plane 18 is formed on one side of the first rubber ring 11 close to the first flange 3, so that when the first sleeve 15 pushes the first rubber ring 11, the first rubber ring 11 is extruded, the first rubber ring 11 is tightly deformed and attached to the inner wall of the first connecting pipe 1 and the first sleeve 15, the sealing performance is improved, the circumferential outer surface of the second sleeve 19 is matched with the circumferential inner surface of the second fixed ring 13, and the second sleeve 19 can be conveniently inserted into the second fixed ring 13 smoothly, and the first flange 3, the rubber pad 6 and the second flange 4 are fixedly connected through the bolts 5.
Working principle: when the butt-joint sealing structure of the natural gas transmission pipeline is used, the first flange 3 of the first connecting pipe 1 and the second flange 4 of the second connecting pipe 2 are firstly close to each other, the rubber gasket 6 is placed between the two flanges, the first connecting pipe 1 and the second connecting pipe 2 are connected through the bolt 5 and the nut, under the action of the bolt 5, the first flange 3 and the second flange 4 are closer to each other, the first sleeve 15 is inserted into the first connecting pipe 1, is contacted with the first rubber ring 11, and presses the first rubber ring 11, so that the first rubber ring 11 is retracted, the spring 10 is compressed, the stop rod 8 pushes the stop ring 12 to retract, and due to the arrangement of the circumferential inclined plane 18 of the first sleeve 15 and the inclined groove of the first rubber ring 11, when the first rubber ring 11 is pressed, the first rubber ring 11 is extruded to form the circumference inner wall of the first connecting pipe 1 and the circumference outer wall of the first sleeve 15, so that the first rubber ring 11 is tightly attached to the circumference inner wall of the first connecting pipe 1 and the circumference outer wall of the first sleeve 15, the primary sealing effect is achieved, when the first rubber ring 11 pushes the baffle ring 12 through the limit rod 8, the baffle ring 12 retreats and compresses the second rubber ring 14, the second rubber ring 14 deforms, the second rubber ring 14 is extruded to the second sleeve 19, the secondary sealing effect is achieved, and as the two rubber rings 17 are further arranged on the circumference outer side of the first sleeve 15, the two rubber rings 17 are tightly attached to the circumference inner wall of the first connecting pipe 1 and the circumference outer wall of the first sleeve 15 when the first sleeve 15 is inserted, the tertiary sealing effect is achieved, and finally, the fourth sealing effect is achieved when the first flange 3 and the second flange 4 are tightly attached to the rubber pad 6 under the action of the bolts 5.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. The utility model provides a natural gas transmission pipeline butt joint seal structure, includes first connecting pipe (1), second connecting pipe (2) and rubber pad (6), its characterized in that, first flange (3) of first connecting pipe (1) one end fixedly connected with, first solid fixed ring (7) of first connecting pipe (1) circumference inner wall fixedly connected with, the equidistance leaves on first solid fixed ring (7) and is equipped with a plurality of round holes, and is a plurality of equal slip cap is equipped with gag lever post (8) in the round hole, a plurality of one end fixedly connected with same sheetmetal (9) that gag lever post (8) are close to first flange (3), one side fixedly connected with first rubber circle (11) that sheetmetal (9) are close to first flange (3), and the circumference internal surface size of first rubber circle (11), sheetmetal (9) and first solid fixed ring (7) equals.
2. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 1, wherein springs (10) are sleeved on the circumferential surfaces of the limiting rods (8) between the first fixing rings (7) and the metal sheets (9), and the other ends of the limiting rods (8) are fixedly connected with the same baffle ring (12).
3. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 2, wherein a second fixing ring (13) is fixedly connected to the circumferential inner wall of the first connecting pipe (1) close to the baffle ring (12), a second rubber ring (14) is fixedly installed on one side, close to the baffle ring (12), of the second fixing ring (13), and the circumferential inner surfaces of the second rubber ring (14), the baffle ring (12) and the second fixing ring (13) are equal in size.
4. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 1, wherein a second flange (4) is fixedly connected to one side of the second connecting pipe (2), a first sleeve (15) is fixedly connected to one side, close to the second flange (4), of the circumferential inner wall of the second connecting pipe (2), two annular grooves (16) are formed in the circumferential outer wall of the first sleeve (15) in an equidistant manner, and rubber rings (17) are arranged in the two annular grooves (16).
5. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 4, wherein a circumferential inclined surface (18) is formed on one side, far away from the second flange (4), of the first sleeve (15), and a second sleeve (19) is fixedly connected to the circumferential inner wall of one side, far away from the second flange (4), of the first sleeve (15).
6. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 1, wherein a chute matched with the circumferential inclined plane (18) is formed on one side, close to the first flange (3), of the first rubber ring (11).
7. A natural gas transmission pipeline butt-joint sealing structure according to claim 5, characterized in that the circumferential outer surface of the second sleeve (19) is adapted to the circumferential inner surface of the second fixing ring (13).
8. The butt-joint sealing structure of the natural gas transmission pipeline according to claim 2, wherein the first flange (3), the rubber pad (6) and the second flange (4) are fixedly connected through bolts (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320633487.1U CN219692542U (en) | 2023-03-28 | 2023-03-28 | Butt joint sealing structure of natural gas transmission pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320633487.1U CN219692542U (en) | 2023-03-28 | 2023-03-28 | Butt joint sealing structure of natural gas transmission pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219692542U true CN219692542U (en) | 2023-09-15 |
Family
ID=87969826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320633487.1U Active CN219692542U (en) | 2023-03-28 | 2023-03-28 | Butt joint sealing structure of natural gas transmission pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219692542U (en) |
-
2023
- 2023-03-28 CN CN202320633487.1U patent/CN219692542U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |