CN219119179U

CN219119179U - Fastening device for oil well casing

Info

Publication number: CN219119179U
Application number: CN202320021752.0U
Authority: CN
Inventors: 张昌全; 杨建业
Original assignee: Chengdu Linengda Fastener Manufacturing Co ltd
Current assignee: Chengdu Linengda Fastener Manufacturing Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-06-02
Anticipated expiration: 2033-01-05

Abstract

The utility model belongs to the technical field of oil well casing fastening, and discloses a fastening device of an oil well casing, which comprises a fixed connection main body, wherein two ends of the fixed connection main body are connected with conveying pipelines, the conveying pipelines are embedded into the fixed connection main body, two ends of the fixed connection main body are symmetrically provided with connecting plates, and the connecting plates are symmetrically provided with mounting holes at equal intervals.

Description

Fastening device for oil well casing

Technical Field

The utility model belongs to the technical field of fastening of oil well casing pipes, and particularly relates to a fastening device of an oil well casing pipe.

Background

The oil well casing is a steel pipe for supporting oil and gas pipelines, and the main purpose of the oil well casing is to protect the internal pipelines from being influenced by external pressure, reduce the deformation of the oil and gas pipelines, ensure the normal operation of an oil well, and fixedly connect the oil well casings by adopting screws, so that the length of the oil well casing is prolonged, and the protection range is enlarged.

When the length of the oil well casing is lengthened, screw fixation is generally adopted, the screw is rotated to penetrate through the inside of the mounting holes outside the two oil well pipelines to be fixed, but in the actual use process, along with continuous exploitation, the ground can sink, the screw is very easy to fall off, the oil well casing is broken, loss is caused, and the fastening device of the oil well casing is designed for reinforcing the connection between the oil well casings.

Disclosure of Invention

The utility model aims to provide a fastening device for an oil well casing, which solves the problem that in the practical use, the screw for fixing the long oil well casing connection along with the ground sinking is easy to fall off to cause the oil well casing to break.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the fastening device of the oil well casing comprises a fixed connection main body, wherein two ends of the fixed connection main body are connected with conveying pipelines, the conveying pipelines are embedded into the fixed connection main body, connecting plates are symmetrically arranged at two ends of the fixed connection main body, mounting holes are symmetrically formed in the connecting plates at equal intervals, first screws are arranged in the mounting holes, and penetrate through the mounting holes and are embedded into the conveying pipelines;

the utility model discloses a conveyer pipe, including fixed connection main part, limiting ring, fixed connection main part, limiting bolt, limiting ring, fixed connection main part and limiting ring, the fixed plate is all installed for both ends symmetry about one end of fixed connection main part, the fixed plate has all been seted up fixed slot for the position of fixed plate, the fixed plate is all embedded to the inside of fixed slot, limiting slot has all been seted up to the preceding terminal surface of fixed plate, limiting bolt is all installed to the inside of limiting slot, limiting bolt all runs through conveyer pipe and imbeds to the inside of limiting slot, limiting ring is installed to limiting ring in the outside of limiting slot inside, the constant head tank has all been seted up for limiting ring's position, limiting ring all imbeds to the inside of constant head tank.

Preferably, the inside of fixed connection main part, and the position that is located pipeline output has seted up first recess, the inside slip of first recess has the closing plate, the second screw is installed to the one end that pipeline was kept away from to the closing plate, the second screw all extends to the outside of fixed connection main part, the sealing groove has been seted up for pipeline's one end to the closing plate, the inside arc that is of sealing groove.

Preferably, the conveying pipeline extends to the internal one end of fixed connection main part and is provided with the screw thread, the fixed connection main part is provided with the internal screw thread for the position of conveying pipeline output all symmetry, the internal screw thread is connected with the screw thread mutual gomphosis that the conveying pipeline extends to the inside one end of fixed connection main part.

Preferably, the outer side of the fixed connection main body and the parts corresponding to the second screws are symmetrically provided with rotating blocks, the inner walls of the rotating blocks are provided with threads, and the second screws are rotated in the rotating blocks.

Preferably, the second sealing rings are symmetrically arranged at the two ends of the fixed connection main body, the first sealing rings are arranged on the second screw below the threads on the second screw, and the sealing layers are arranged on the inner walls of the sealing grooves.

Preferably, the diameter of the rotary hole of the rotary block is smaller than the diameter of the first sealing ring.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model is provided with the fixing plate, the fixing groove, the limiting bolt and the like, when the oil well casing is connected, the conveying pipeline is embedded into the fixing groove, the fixing plate on the conveying pipeline is embedded into the fixing groove, after the fixing of the first screw is finished, the limiting bolt penetrates through the fixing connecting main body to be embedded into the limiting groove on the fixing plate to complete the secondary fixing, and the problem that the oil well casing is broken due to the fact that the screw connected with the long oil well casing is very easy to fall off along with the sinking of the ground in actual use is solved.

(2) The utility model is provided with the second screw, the sealing plate, the sealing groove and the like, and after the installation is completed, the second screw is rotated to gradually move towards the direction of the conveying pipelines, so that the sealing groove on the sealing plate is contacted with the output ends of the two conveying pipelines, the output ends of the two conveying pipelines are sealed through the sealing groove, and the loss of petroleum in the conveying process is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

fig. 3 is an enlarged view at a in fig. 1;

in the figure: 1. a delivery conduit; 2. a first screw; 3. a connecting plate; 4. a fixing plate; 5. a fixed connection main body; 6. a second screw; 7. a rotating block; 8. a fixing groove; 9. an internal thread; 10. a first groove; 11. a sealing plate; 12. a first seal ring; 13. sealing grooves; 14. a second seal ring; 15. a sealing layer; 16. a restriction ring; 17. limiting the bolt; 18. a limiting groove; 19. and a positioning groove.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides the following technical solutions: the fastening device of the oil well casing comprises a fixed connection main body 5, wherein two ends of the fixed connection main body 5 are connected with a conveying pipeline 1, the conveying pipeline 1 is embedded into the fixed connection main body 5, two ends of the fixed connection main body 5 are symmetrically provided with connecting plates 3, the connecting plates 3 are symmetrically provided with mounting holes at equal intervals, the inside of each mounting hole is provided with a first screw 2, and the first screw 2 penetrates through the mounting hole and is embedded into the conveying pipeline 1;

the fixed plate 4 is installed to both ends about the one end of pipeline 1 for fixed connection main part 5, fixed slot 8 has all been seted up for the position of fixed connection main part 5 for fixed plate 4, fixed plate 4 all imbeds the inside of fixed slot 8, limiting groove 18 has all been seted up to the preceding terminal surface of fixed plate 4, limiting bolt 17 is all installed to limiting groove 18's inside, limiting bolt 17 all runs through pipeline 1 and imbeds the inside of limiting groove 18, limiting bolt 17 imbeds the outside of limiting groove 18 inside and installs limit circle 16, limiting groove 18 all sets up constant head tank 19 for the inside of limit circle 16, limit circle 16 all imbeds the inside of constant head tank 19, be provided with the screw thread on the one end that pipeline 1 extends to the inside of fixed connection main part 5, fixed connection main part 5 all symmetrically is provided with internal screw thread 9 for the position of pipeline 1 output, internal screw thread 9 and pipeline 1 extend to the screw thread mutual gomphosis connection on the inside one end of fixed connection main part 5.

Through the technical scheme: when connecting the oil well casing, because the inside screw thread 9 of fixed connection main part 5 is inside and the screw thread mutual gomphosis connection on the delivery pipe 1 output, with delivery pipe 1 through the inside of internal screw thread 9 rotatory embedding to fixed connection main part 5, carry out preliminary fixed through the screw thread on internal screw thread 9 and the output, and make fixed plate 4 on the delivery pipe 1 embed to inside fixed slot 8, after the rotatory mounting hole that runs through on connecting plate 3 of first screw 2 and run through delivery pipe 1 inside accomplish conventional fixed, through run through fixed connection main part 5 and embed to the inside completion secondary fixation of limit slot 18 on fixed plate 4 with limit bolt 17, through limit circle 16 of setting, limit circle 16 also imbeds to inside the constant head tank 19 when limit bolt 17 imbeds to limit slot 18 inside, make limit bolt 17 and fixed connection main part 5 mutual fixed connection, and make fixed plate 4 and fixed connection main part 5 mutual fixed connection, and then the connection stability of two delivery pipes 1 is strengthened, the problem that the screw that the extremely easily drops down and fix long oil well casing and cause the oil well casing to sink fracture along with ground in the in actual use has been solved.

Referring to fig. 1-2, a first groove 10 is formed in the inner portion of the fixed connection main body 5 and located at the output end of the conveying pipe 1, a sealing plate 11 slides in the first groove 10, a second screw 6 is mounted at one end of the sealing plate 11 away from the conveying pipe 1, the second screw 6 extends to the outer side of the fixed connection main body 5, a sealing groove 13 is formed in the sealing plate 11 opposite to one end of the conveying pipe 1, a rotating block 7 is symmetrically mounted at the outer side of the fixed connection main body 5 and opposite to the position of the second screw 6, threads are arranged on the inner wall of the rotating block 7, the second screw 6 rotates in the rotating block 7, a second sealing ring 14 is symmetrically mounted at two ends of the fixed connection main body 5, a sealing layer 15 is mounted on the second screw 6 and located below the threads on the second screw 6, and a sealing layer 15 is mounted on the inner wall of the sealing groove 13.

Through the technical scheme: after the installation is completed, the second screw 6 is rotated, the second screw 6 rotates on the rotating block 7 to drive the sealing plate 11 to move in the first groove 10, so that the sealing plate 11 gradually moves towards the conveying pipelines 1, the sealing grooves 13 on the sealing plate 11 are in contact with the output ends of the two conveying pipelines 1, the second screw 6 is continuously rotated, the sealing plate 11 continuously applies pressure to the conveying pipelines 1, the fixing of the two conveying pipelines 1 is further completed, the output ends of the two conveying pipelines 1 are sealed through the sealing layers 15 on the inner walls of the sealing grooves 13, the loss of petroleum in the conveying process is reduced, in addition, the second sealing is performed through the first sealing ring 12 and the second sealing ring 14, the petroleum is further prevented from penetrating to the outside of the fixed connection main body 5 through gaps, and the conveying loss is reduced.

Further, the diameter of the rotation hole of the rotation block 7 is smaller than the diameter of the first seal ring 12.

Specifically, since the diameter of the rotation hole of the rotation block 7 is smaller than the diameter of the first sealing ring 12, the first sealing ring 12 cannot move to the outside of the fixed connection body 5, and thus the tightness of the fixed connection body 5 is ensured.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fastening device for an oil well casing, characterized in that: the novel pipeline connecting device comprises a fixed connecting main body (5), wherein two ends of the fixed connecting main body (5) are connected with conveying pipelines (1), the conveying pipelines (1) are embedded into the fixed connecting main body (5), connecting plates (3) are symmetrically arranged at two ends of the fixed connecting main body (5), mounting holes are symmetrically formed in the connecting plates (3) at equal intervals, first screws (2) are arranged in the mounting holes, and the first screws (2) penetrate through the mounting holes and are embedded into the conveying pipelines (1);

the utility model discloses a pipeline, including fixed connection main part (5), delivery pipeline (1) are all installed fixed plate (4) for both ends about the one end of fixed connection main part (5), fixed slot (8) have all been seted up for the position of fixed plate (4), fixed plate (4) all imbeds the inside of fixed slot (8), limit groove (18) have all been seted up to the preceding terminal surface of fixed plate (4), limit bolt (17) are all installed to the inside of limit groove (18), limit bolt (17) all run through delivery pipeline (1) and imbed the inside of limit groove (18), limit circle (16) are installed in the outside of limit bolt (17) embedding to limit groove (18) inside, limit groove (18) all have seted up constant head tank (19) for the position of limit circle (16), limit circle (16) all imbeds the inside of constant head tank (19).

2. A fastening device for an oil well casing according to claim 1, wherein: the inside of fixed connection main part (5), and be located the position of pipeline (1) output and seted up first recess (10), the inside slip of first recess (10) has closing plate (11), second screw (6) are installed to the one end that pipeline (1) was kept away from to closing plate (11), second screw (6) all extend to the outside of fixed connection main part (5), seal groove (13) have been seted up for the one end of pipeline (1) to closing plate (11), the inside arc that is of seal groove (13).

3. A fastening device for an oil well casing according to claim 2, wherein: the conveying pipeline (1) is provided with threads on one end extending to the inside of the fixed connection main body (5), the fixed connection main body (5) is symmetrically provided with internal threads (9) relative to the output end of the conveying pipeline (1), and the internal threads (9) are mutually embedded and connected with the threads on one end extending to the inside of the fixed connection main body (5) of the conveying pipeline (1).

4. A fastening device for an oil well casing according to claim 3, wherein: the outer side of the fixed connection main body (5) and the parts corresponding to the second screws (6) are symmetrically provided with rotating blocks (7), threads are arranged on the inner walls of the rotating blocks (7), and the second screws (6) rotate in the rotating blocks (7).

5. A fastening device for an oil well casing according to claim 4, wherein: the two ends of the fixed connection main body (5) are symmetrically provided with second sealing rings (14), the second screw (6) is provided with first sealing rings (12) below the threads on the second screw (6), and the inner wall of the sealing groove (13) is provided with sealing layers (15).

6. A fastening device for an oil well casing according to claim 5, wherein: the diameter of the rotating hole of the rotating block (7) is smaller than that of the first sealing ring (12).