CN219061544U - Expansion joint for large-diameter connection - Google Patents
Expansion joint for large-diameter connection Download PDFInfo
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- CN219061544U CN219061544U CN202223028901.0U CN202223028901U CN219061544U CN 219061544 U CN219061544 U CN 219061544U CN 202223028901 U CN202223028901 U CN 202223028901U CN 219061544 U CN219061544 U CN 219061544U
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Abstract
The utility model relates to the technical field of high-pressure manifolds, in particular to an expansion joint for large-drift-diameter connection, which comprises an expansion straight pipe, an expansion stud, a nut, a butt flange, a clamp spring, a four-way joint and a flange stud, wherein the expansion joint is arranged on the expansion straight pipe; one end of the telescopic straight pipe is provided with a sealing backing ring, and the side wall of the other end of the telescopic straight pipe is provided with a seal and is arranged in the four-way joint; the butt flange penetrates through the telescopic straight pipe and is buckled on a baffle ring arranged on the telescopic straight pipe; the four-way joint is connected with the butt flange through the telescopic studs, nuts are arranged on two sides of the butt flange, the left nuts bear the stress between the telescopic straight pipe and the four-way joint, the right nuts adjust the telescopic distance between the telescopic straight pipe and the four-way joint, and the telescopic straight pipe has two degrees of freedom of 360-degree rotation and axial movement relative to the four-way joint through tight fit of the butt flange, the baffle ring, the telescopic studs and the nuts, so that the problems that an existing telescopic joint is inconvenient to connect at a wellhead position and a pipeline is not easy to level when connected at a long distance are solved.
Description
Technical Field
The utility model relates to the technical field of high-pressure manifolds, in particular to an expansion joint for large-diameter connection.
Background
At present, three connection forms are mainly available for a high-pressure manifold between a fracturing pump and a wellhead in domestic fracturing operation: the first is that all the two parts are connected through a 3 inch high-pressure pipeline, and the two parts are composed of a high-pressure movable elbow, a union type connecting structure and a high-pressure straight pipe, so that the two parts have the advantages of quick connection, technical bearing and skilled worker operation, but have the defects of large workload, multiple connecting points and disordered field arrangement; the second is that the high-pressure manifold sled is connected with the shunt sled through a large-diameter pipeline, the fracturing pump is connected with the high-pressure manifold sled and the shunt sled is connected with the wellhead through a 3-inch high-pressure pipeline, the advantages of the large-diameter pipeline and the conventional 3-inch high-pressure pipeline are combined, and the hydraulic fracturing pump has the advantages of neat field pipeline arrangement, rapid connection, large friction resistance of pipeline flow, safety and reliability, but the workload is still larger; the third is that only the fracturing pump is connected with the high-pressure manifold sled by a 3 inch high-pressure pipeline, the rest is connected by a large drift diameter, the pipeline arrangement is tidier, the leakage point is smaller, the pipeline friction resistance is smaller, but the large drift diameter is connected by a rigid connection, so that the connection at the wellhead position is inconvenient, and the pipeline is not easy to level when the long-distance connection is performed.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides an expansion joint for large-diameter connection, so as to solve the problems that the existing expansion joint is inconvenient to connect at a wellhead position and a pipeline is difficult to level when the existing expansion joint is connected for a long distance.
The technical scheme of the utility model is as follows:
an expansion joint for large-diameter connection comprises an expansion straight pipe, an expansion stud, a nut, a butt flange, a clamp spring, a four-way joint and a flange stud; one end of the telescopic straight pipe is provided with a sealing backing ring, and the side wall of the other end of the telescopic straight pipe is provided with a seal and is arranged in the four-way joint; the butt flange penetrates through the telescopic straight pipe and is buckled on a baffle ring arranged on the telescopic straight pipe; the four-way joint is connected with the butt flange through the telescopic studs, nuts are arranged on two sides of the butt flange, the left nuts bear stress between the telescopic straight pipes and the four-way joint, the right nuts adjust telescopic distances between the telescopic straight pipes and the four-way joint, and the telescopic straight pipes have two degrees of freedom of 360-degree rotation and axial movement relative to the four-way joint through tight fit of the butt flange, the baffle ring, the telescopic studs and the nuts.
Further, a clamping groove for installing the baffle ring, a ring groove for installing the seal and a gasket ring groove for installing the gasket ring are formed in the telescopic straight pipe.
Further, a sealing hole is formed in one end of the four-way valve, a backing ring groove for installing a sealing backing ring is formed in the other end of the four-way valve, the sealing end of the telescopic straight pipe is arranged in the sealing hole of the four-way valve, and the other end of the four-way valve is connected with other pipelines.
Further, an inner hole step surface and a clamp spring groove are formed in the inner side of the butt flange, the inner hole step surface is attached to the left end face of the baffle ring, and a clamp spring is arranged in the clamp spring groove so as to baffle the right side of the baffle ring.
Furthermore, the baffle ring is of a split structure.
The beneficial effects of the utility model are as follows: the telescopic joint for large-diameter connection can enable the telescopic straight pipe to have two degrees of freedom of 360-degree rotation and axial movement relative to the four-way joint, so that the telescopic joint is convenient to connect at a wellhead position, and when the telescopic joint is connected for a long distance, a pipeline is easy to level. The expansion joints for large-diameter connection can be connected together and are tightly assembled through the flange studs and nuts, so that the adjustment with more degrees of freedom is realized.
Drawings
FIG. 1 is a schematic diagram of the structure of an expansion joint for large-diameter connection according to the present utility model;
FIG. 2 is a perspective view of the telescopic joint for large-diameter connection according to the present utility model;
FIG. 3 is a schematic view of a plurality of large-diameter expansion joint connection structures according to the present utility model.
In the figure, 1, a telescopic straight tube; 2. a telescopic stud; 3. a nut; 4. a butt flange; 5. a baffle ring; 6. clamping springs; 7. sealing; 8. a four-way joint; 9. a seal grommet; 10. and (5) a flange stud.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings of the specification.
Examples
As shown in fig. 1 and 2, the present embodiment relates to an expansion joint for large-diameter connection, which includes an expansion straight pipe 1, an expansion stud 2, a nut 3, a butt flange 4, a baffle ring 5, a clamp spring 6, a seal 7, a four-way joint 8, a seal backing ring 9 and a flange stud 10.
The telescopic straight pipe 1 is provided with a baffle ring 5, a seal 7 and a seal backing ring 9, the four-way joint 8 is arranged on one side of the telescopic straight pipe 1 through a seal hole, the seal backing ring 9 is fixed on the other side of the telescopic straight pipe 1 through a backing ring groove, the butt flange 4 penetrates through the seal end of the telescopic straight pipe 1, the baffle ring 5 is arranged on the telescopic straight pipe 1 through a clamping groove, the butt flange 4 passes through the right side of the telescopic straight pipe 1 to the left side of the baffle ring 5, the step surface of the inner hole of the butt flange 4 is arranged on the left end surface of the baffle ring 5, the clamping spring 6 of the butt flange is clamped in the clamping groove of the butt flange 4 and can block the right side of the baffle ring 5, the telescopic straight pipe 1 is provided with the seal 7, the seal 7 is arranged in the seal ring groove, the seal end of the telescopic straight pipe 1 provided with the seal 7 is arranged in the seal hole of the four-way joint 8 and is connected with the four-way joint 8 through a telescopic stud 2, two ends of the butt flange 4 are respectively provided with nuts 3, the nuts 3 on the left side bear the stress between the telescopic straight pipe 1 and the four-way joint 8, and the right nuts 3 adjust the telescopic distance between the telescopic straight pipe 1 and the four-way joint 8; the sealing gasket 9 is arranged on the telescopic straight pipe 1 through a gasket groove, the telescopic straight pipe 1 is connected with other equipment (such as another telescopic joint for connecting large-diameter in the same type) through the flange stud 10, the nut 3 is arranged on the flange stud 10, and the telescopic straight pipe 1 is connected with the nut 3 through the flange stud 10.
The baffle ring 5 is of a split structure, and the baffle ring 5 is arranged in a baffle ring clamping groove of the telescopic straight pipe 1.
The clamp spring 6 limits the butt flange 4 to shake relative to the telescopic straight pipe 1, and the butt flange 4 completes 360-degree rotation relative to the telescopic straight pipe 1, so that a bolt mounting hole between the four-way joint 8 and the telescopic straight pipe 1 has no phase requirement.
During assembly, the maximum distance between the telescopic straight pipe 1 and the four-way joint 8 is ensured, then the telescopic straight pipe 1 and the four-way joint 8 are connected with other parts, then the left nut 3 is adjusted to enable the planes of the rest butt flanges 4 to be attached, and then the left nut 3 is screwed. The butt flange 4 can rotate for 360 degrees relative to the telescopic straight pipe 1 and can axially move along the telescopic straight pipe 1, so that the telescopic joint is conveniently connected at a wellhead position, and a pipeline is easy to level when the telescopic joint is connected for a long distance. As shown in FIG. 3, the expansion joint combination for large-diameter connection with the same structure and model can form a structure with multiple degrees of freedom, and can finish fine adjustment of angle and distance when the wellhead is connected, thereby solving the problems of long-distance pipeline leveling and difficult connection between large-diameter and the wellhead.
Claims (5)
1. The utility model provides a big latus rectum is connected and is used telescopic joint which characterized in that: comprises a telescopic straight pipe (1), a telescopic stud (2), a nut (3), a butt flange (4) and a four-way joint (8); one end of the telescopic straight pipe (1) is provided with a sealing gasket ring (9), and the side wall of the other end is provided with a seal (7) and is arranged in the four-way joint (8); the butt flange (4) penetrates through the telescopic straight pipe (1) and is buckled on a baffle ring (5) arranged on the telescopic straight pipe (1); the four-way joint (8) is connected with the butt joint flange (4) through the telescopic studs (2), and nuts (3) are arranged on two sides of the butt joint flange (4).
2. The telescopic joint for large-diameter connection according to claim 1, wherein: the telescopic straight tube (1) is provided with a clamping groove for installing the baffle ring (5), a ring groove for installing the seal (7) and a gasket ring groove for installing the seal gasket ring (9).
3. The telescopic joint for large-diameter connection according to claim 1, wherein: the sealing device is characterized in that one end of the four-way valve (8) is provided with a sealing hole, the other end of the four-way valve is provided with a backing ring groove for installing a sealing backing ring (9), and the sealing end of the sealing (7) is installed in the sealing hole of the four-way valve (8) on the telescopic straight pipe (1).
4. A large-diameter expansion joint according to any one of claims 1 to 3, wherein: the inner side of the butt flange (4) is provided with an inner hole step surface and a clamp spring groove, the inner hole step surface is attached to the left end face of the baffle ring (5), and a clamp spring (6) is arranged in the clamp spring groove so as to block the right side of the baffle ring (5).
5. The telescopic joint for large-diameter connection according to claim 4, wherein: the baffle ring (5) is of a split structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223028901.0U CN219061544U (en) | 2022-11-14 | 2022-11-14 | Expansion joint for large-diameter connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223028901.0U CN219061544U (en) | 2022-11-14 | 2022-11-14 | Expansion joint for large-diameter connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219061544U true CN219061544U (en) | 2023-05-23 |
Family
ID=86368724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223028901.0U Active CN219061544U (en) | 2022-11-14 | 2022-11-14 | Expansion joint for large-diameter connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219061544U (en) |
-
2022
- 2022-11-14 CN CN202223028901.0U patent/CN219061544U/en active Active
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