CN211715071U - Hydraulic universal joint - Google Patents
Hydraulic universal joint Download PDFInfo
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- CN211715071U CN211715071U CN202020131090.9U CN202020131090U CN211715071U CN 211715071 U CN211715071 U CN 211715071U CN 202020131090 U CN202020131090 U CN 202020131090U CN 211715071 U CN211715071 U CN 211715071U
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- joint
- piston
- connecting sleeve
- hydraulic
- lower connecting
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Abstract
A hydraulic universal joint comprises an upper connecting sleeve, a piston, a limiting joint and a lower connecting sleeve; the upper connecting sleeve and the piston are fixedly connected with the outside, and the piston is in sliding contact with the upper connecting sleeve; the limit joint and the lower connecting sleeve are connected through threads to form a hydraulic control cavity, and the limit joint and the lower connecting sleeve are sleeved on the piston together; the piston is connected to the outside. The utility model discloses well spacing joint constitutes the hydraulic control chamber with lower adapter sleeve threaded connection, through leading to liquid in to the hydraulic control chamber to through control hydraulic pressure, realize the switching-over, solved because the problem of the inflexibility of complicated mechanical structure when carrying out the rigidity adjustment and can't turn to. In addition, by arranging the piston to be in sliding contact with the connecting sleeve, the relative position conversion between the limiting joint and the lower connecting sleeve can be assisted, the universal joint can be flexibly and quickly reversed in the reversing process, and the underground descending progress of the oil pipe tool is improved.
Description
Technical Field
The utility model relates to an oil and gas exploitation and equip technical field, concretely relates to hydraulic formula universal joint.
Background
When the oil and gas exploitation is carried out, the underground work needs to be carried out through an oil pipe tool, the pipe string in the coiled tubing tool well is difficult to run in the running-in process, and particularly the problems that the pipe string is difficult to run in a highly-deviated well and the like exist. In some cases, the coiled tubing string may become locked in place with a jam, making it difficult to advance the string further.
At present, various technologies are adopted to relieve the problems in coiled tubing operation, a mechanical universal joint is a common technical machine to solve coiled tubing operation, but the mechanical universal joint is complex in structure, and in the actual exploration process, due to the structural limitation of the mechanical universal joint, the mechanical universal joint is long in operation time, low in descending progress efficiency, and often occurs to the problem that the mechanical universal joint is blocked when steering is performed, so that the mechanical universal joint does not have excellent economic benefit and social benefit.
SUMMERY OF THE UTILITY MODEL
In order to solve the existing mechanical type universal joint among the prior art when turning to, meet easily and hinder and lead to mechanical mechanism can't turn to, the problem of progress is gone into under the influence, the utility model provides a hydraulic type universal joint.
The utility model provides a technical scheme is:
a hydraulic universal joint is connected in series between a first well inner pipe and a second well inner pipe which are adjacent to the outside; the universal joint includes: the piston type piston pump comprises an upper connecting sleeve (2), a piston (3), a limiting joint (4) and a lower connecting sleeve (5);
the upper connecting sleeve (2) and the piston (3) are fixedly connected with the first inner well pipe, and the piston (3) is in sliding contact with the upper connecting sleeve (2);
the limiting joint (4) is in threaded connection with the lower connecting sleeve (5) to form a hydraulic control cavity, and the limiting joint (4) and the lower connecting sleeve (5) are sleeved on the piston (3) together;
the piston (3) is connected with the second well inner pipe.
Preferably, the hydraulic control chamber is a closed annular space;
the piston (3) is provided with a one-way hole and communicated with the hydraulic control cavity for liquid flowing.
Preferably, the limiting joint (4) and the lower connecting sleeve (5) are made of rigid materials.
Preferably, the upper connecting sleeve (2) is provided with a protruding mechanism.
Preferably, the limiting joint (4) is provided with a groove matched with the protruding mechanism, and the groove is used for limiting the axial movement of the protruding mechanism.
Preferably, the piston (3) is a cylindrical sleeve, and one end of the cylindrical sleeve is provided with a spherical sliding circular surface;
the sliding round surface is in sliding contact with the upper connecting sleeve (2).
Preferably, the universal joint further includes:
the device comprises an upper joint (1), a shell (6) and a lower joint (7);
the inner wall of the upper joint (1) is fixedly connected with the inner pipe of the first well in a threaded manner, and the outer wall of the upper joint is connected with the upper connecting sleeve (2) in a threaded manner;
the lower joint (7) is sleeved at the joint of the piston (3) and the second well inner pipe;
the shell (6) is sleeved at the butt joint of the lower joint (7) and the lower connecting sleeve (5).
Preferably, a first sealing hole is formed between the limit joint (4) and the piston (3);
a second sealing hole is formed between the lower connecting sleeve (5) and the piston (3);
the hydraulic universal joint further comprises: a first seal assembly (8) and a second seal assembly (9);
the first seal assembly (8) is disposed within the first seal bore;
the second seal assembly (9) is disposed within the second seal bore.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an among the technical scheme: the upper connecting sleeve, the piston, the limiting joint and the lower connecting sleeve; the upper connecting sleeve and the piston are fixedly connected with the first inner well pipe, and the piston is in sliding contact with the upper connecting sleeve; the limit joint and the lower connecting sleeve are connected through threads to form a hydraulic control cavity, and the limit joint and the lower connecting sleeve are sleeved on the piston together; the piston is connected with the second borehole tube. The utility model discloses in spacing joint with lower adapter sleeve threaded connection constitutes the hydraulic control chamber, through to lead to liquid in the hydraulic control chamber to through control hydraulic pressure, realize the switching-over, solved because the mechanical structure of complicacy is in the problem of the inflexibility when carrying out rigidity adjustment and can't turn to. In addition, by arranging the piston to be in sliding contact with the connecting sleeve, the relative position conversion between the limiting joint and the lower connecting sleeve can be assisted, the universal joint can be flexibly and quickly reversed in the reversing process, and the underground descending progress of the oil pipe tool is improved.
Drawings
Fig. 1 is a schematic diagram of a transverse cross-sectional structure of a hydraulic universal joint of the present invention;
fig. 2 is a schematic structural view of an upper connecting sleeve of the present invention;
fig. 3 is a schematic view of a spacing joint structure of the present invention;
wherein, 1-upper joint; 2-connecting the sleeves; 3-a piston; 4-a limit joint; 5-lower connecting sleeve; 6-a housing; 7-lower joint; 8-a first seal assembly; 9-second seal assembly.
Detailed Description
For a better understanding of the present invention, reference is made to the accompanying drawings and examples, which are set forth in the following description and are incorporated in the following description.
This embodiment provides a hydraulic type universal joint, a schematic diagram of a transverse cross-sectional structure of the hydraulic type universal joint is shown in fig. 1,
the utility model provides a hydraulic formula universal joint comprises top connection 1, upper connection cover 2, piston 3, spacing joint 4, lower adapter sleeve 5, shell 6, lower clutch 7, first seal assembly 8 and second seal assembly 9.
The upper joint 1 is connected with the upper connecting sleeve 2 through threads, the piston 3 is positioned in the upper connecting sleeve 2, and the spherical excircle at the front end of the piston 3 is just positioned in a spherical space formed by the upper joint 1 and the upper connecting sleeve 2. The limiting joint 4 is located outside the piston 3 and sealed through the sealing assembly 8, and the protruding mechanism of the upper connecting sleeve 2 is located in a left end groove of the limiting joint 4.
In this embodiment, the protruding mechanism on the connecting sleeve 2 and the groove on the limiting joint 4 are both one, so that the hydraulic universal joint in this embodiment can realize directional steering bending.
The lower connecting sleeve 5 is connected with the limiting joint 4 through threads, and the lower connecting sleeve 5 is sealed with the piston 3 through a sealing component 9. At this time, the annular space formed between the limit connector 4 and the lower connecting sleeve 5 just corresponds to the hole on the piston 3. The shell 6 is connected with the lower connecting sleeve 5 through threads, and the lower connector 7 is positioned outside the piston 3 and is connected with the shell 6 through threads.
In particular, the limit connector 4 and the lower connecting sleeve 5 are both rigid structures, relative conveying does not occur between the limit connector and the lower connecting sleeve, and only an annular hydraulic control cavity is formed. The hydraulic control cavity is a closed annular cavity.
The piston 3 is a cylindrical sleeve, and one end of the piston is provided with a spherical sliding circular surface; the sliding circular surface is in sliding contact with the upper connecting sleeve 2, and in actual engineering, the sliding circular surface can slide relative to the connecting sleeve 2.
When the device is put into use, a hydraulic controller is connected to the outside of the device, hydraulic pressure can be applied to hydraulic control volume through the small holes in the piston 3, and the limiting joint 4 and the lower connecting sleeve 5 are opposite to each other and are oriented and bent relative to the upper connecting sleeve 2 due to the fact that the inside of the hydraulic control cavity is subjected to water pressure. Meanwhile, the circular surface at one end of the piston 3 and the upper connecting sleeve 2 slide relatively.
When the limit connector 4 and the lower connecting sleeve 5 are oppositely bent in a directional manner relative to the upper connecting sleeve 2, the bending angle is determined by the length of the protruding mechanism of the upper connecting sleeve 2, when the universal joint in the embodiment is in a straight state, a space exists between the protruding mechanism and the piston 3, and when the relative angle between the limit connector 4 and the upper connecting sleeve 2 is changed, the protruding mechanism can be pressed against the surface of the piston 3 to limit the angle change of the limit connector 4 and the upper connecting sleeve 2.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (8)
1. The hydraulic universal joint is characterized in that the universal joint is connected in series between a first well inner pipe and a second well inner pipe which are adjacent to the outside; the universal joint includes: the piston type piston pump comprises an upper connecting sleeve (2), a piston (3), a limiting joint (4) and a lower connecting sleeve (5);
the upper connecting sleeve (2) and the piston (3) are fixedly connected with the first inner well pipe, and the piston (3) is in sliding contact with the upper connecting sleeve (2);
the limiting joint (4) is in threaded connection with the lower connecting sleeve (5) to form a hydraulic control cavity, and the limiting joint (4) and the lower connecting sleeve (5) are sleeved on the piston (3) together;
the piston (3) is connected with the second well inner pipe.
2. A hydraulic gimbal according to claim 1,
the hydraulic control cavity is a closed annular space;
the piston (3) is provided with a one-way hole and communicated with the hydraulic control cavity for liquid flowing.
3. A hydraulic gimbal according to claim 2, in which the spacing joint (4) and the lower connection sleeve (5) are of rigid material.
4. A hydraulic joint according to claim 1, wherein the upper connection sleeve (2) is provided with protruding means.
5. A hydraulic gimbal according to claim 4, wherein said spacing joint (4) is provided with a groove cooperating with said protrusion means for limiting the axial movement of said protrusion means.
6. A hydraulic joint according to claim 5, wherein the piston (3) is a cylindrical sleeve provided with a spherical sliding surface at one end;
the sliding round surface is in sliding contact with the upper connecting sleeve (2).
7. A hydraulic gimbal according to claim 1, wherein said gimbal further comprises:
the device comprises an upper joint (1), a shell (6) and a lower joint (7);
the inner wall of the upper joint (1) is fixedly connected with the inner pipe of the first well in a threaded manner, and the outer wall of the upper joint is connected with the upper connecting sleeve (2) in a threaded manner;
the lower joint (7) is sleeved at the joint of the piston (3) and the second well inner pipe;
the shell (6) is sleeved at the butt joint of the lower joint (7) and the lower connecting sleeve (5).
8. A hydraulic gimbal according to claim 5,
a first sealing hole is formed between the limiting joint (4) and the piston (3);
a second sealing hole is formed between the lower connecting sleeve (5) and the piston (3);
the hydraulic universal joint further comprises: a first seal assembly (8) and a second seal assembly (9);
the first seal assembly (8) is disposed within the first seal bore;
the second seal assembly (9) is disposed within the second seal bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131090.9U CN211715071U (en) | 2020-01-20 | 2020-01-20 | Hydraulic universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131090.9U CN211715071U (en) | 2020-01-20 | 2020-01-20 | Hydraulic universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715071U true CN211715071U (en) | 2020-10-20 |
Family
ID=72824517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020131090.9U Active CN211715071U (en) | 2020-01-20 | 2020-01-20 | Hydraulic universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211715071U (en) |
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2020
- 2020-01-20 CN CN202020131090.9U patent/CN211715071U/en active Active
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