Wellhead sealing device with deformable sealing assembly

Abstract

The utility model relates to the technical field of well mouth sealing, in particular to a well mouth sealing device with a deformable sealing component, which comprises a support, a sealing component, a sealing component and a sealing component, and is characterized in that a screw is arranged on the surface of the support, and a well mouth is arranged at the bottom of the support; a sealing gasket is arranged on the surface of the sealing block, a first annular groove is formed in the top of the sealing block, a lower pressing plate is arranged on the top of the first annular groove, and a vertical rod is arranged on the surface of the lower pressing plate; the screwing disc is arranged on the surface of the screw rod; the device has the beneficial effects that the support is placed at the top of a well mouth, the jacking plates abut against the surface of the well mouth under pulling of the springs, the jacking plates are clamped on the surface of the well mouth, the threaded rod is screwed, the threaded rod drives the sealing block to descend, the sealing block is inserted into the well mouth, a sealing gasket is arranged on the surface of the sealing block, and the sealing gasket is located between the sealing block and the well mouth; and after the sealing gasket is abraded, the screwing disc is screwed, the rotating ring rotates on the surface of the screwing disc, and the rotating ring descends along with the screwing disc.

Description

Technical Field

[0001] The utility model relates to the field of wellhead sealing, in particular to a wellhead sealing device with a deformable sealing component. Background Art

[0002] The wellhead is located at the top of the well. When not in use, the wellhead is sealed by a sealing device, and the sealing device is opened when in use;

[0003] However, a sealing gasket is provided on the surface of the sealing device, and the sealing gasket is located between the sealing device and the wellhead to play a sealing role. When the sealing gasket is worn after a long time, causing the sealing device to be held against the inner wall of the wellhead, the sealing gasket surface cannot play a good sealing role. Utility Model Content

[0004] The purpose of the utility model is to provide a wellhead sealing device with a deformable sealing component to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a wellhead sealing device with a deformable sealing component, the wellhead sealing device with a deformable sealing component comprising:

[0006] A support, wherein a screw is arranged on the surface of the support and a wellhead is arranged at the bottom of the support;

[0007] A sealing block, a sealing gasket is arranged on the surface of the sealing block, a first annular groove is opened on the top of the sealing block, a lower pressing plate is arranged on the top of the first annular groove, and a vertical rod is arranged on the surface of the lower pressing plate; and

[0008] The screw disk is arranged on the surface of the screw.

[0009] Preferably, the screw is threadedly connected to the inside of the bracket, the screw disk is threadedly connected to the surface of the screw, a sealing block is provided at the end of the screw, the end section of the screw is T-shaped, the end of the screw is located inside the sealing block, the end of the screw can rotate inside the sealing block, a top holding plate is inserted into the surface of the bracket, a spring is provided on the surface of the top holding plate, and the other end of the spring is connected to the surface of the bracket.

[0010] Preferably, a second annular groove is formed on the surface of the sealing block, the sealing gasket is located in the second annular groove, and a force-bearing block is connected to the surface of the sealing gasket, and the force-bearing block is inserted into the interior of the sealing block.

[0011] Preferably, a rotating ring is provided at the bottom of the rotating disk, and the rotating ring can rotate on the surface of the rotating disk. A vertical rod is fixed at the bottom of the rotating ring, and the end of the vertical rod is fixed to the surface of the lower pressure plate.

[0012] Preferably, the lower pressure plate is raised and lowered along with the screwing disk, and after the lower pressure plate is lowered, it is inserted into the first annular groove at the top of the sealing block.

[0013] Preferably, after the lower pressure plate is lowered, it is supported on the end of the force-bearing block, so that the force-bearing block moves.

[0014] The movement of the force bearing block causes the sealing gasket to deform.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model proposes that the bracket is placed on the top of the wellhead, the top holding plate is held on the surface of the wellhead under the pull of the spring, and is clamped on the surface of the wellhead by multiple groups of top holding plates, and the screw is screwed to drive the sealing block to descend, and the sealing block is inserted into the inside of the wellhead, and a sealing gasket is provided on the surface of the sealing block, and the sealing gasket is located between the sealing block and the wellhead to play a sealing role. When the sealing gasket is worn, the screwing disk is screwed, and the rotating ring rotates on the surface of the screwing disk. The rotating ring descends with the screwing disk, and the rotating ring drives the lower pressure plate to descend through the vertical rod. After the lower pressure plate is descended, it is held on the end of the force-bearing block, so that the force-bearing block moves. After the force-bearing block moves, it drives the sealing gasket to move, so that the sealing gasket moves in the second ring groove. When the sealing block descends, the sealing gasket can be more tightly held on the inner wall of the wellhead, thereby enhancing the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the support structure of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the bracket of the utility model from another perspective;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure in the middle.

[0021] In the figure: bracket 1, screw 2, screw plate 3, wellhead 4, spring 5, vertical rod 6, rotating ring 7, top holding plate 8, sealing block 9, sealing gasket 10, lower pressure plate 11, first annular groove 12, second annular groove 13, force block 14. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a wellhead sealing device with a deformable sealing component, the wellhead sealing device with a deformable sealing component comprising: a bracket 1, a screw rod 2 is arranged on the surface of the bracket 1, and a wellhead 4 is arranged at the bottom of the bracket 1; a sealing block 9, a sealing gasket 10 is arranged on the surface of the sealing block 9, a first annular groove 12 is opened on the top of the sealing block 9, a lower pressure plate 11 is arranged on the top of the first annular groove 12, and a vertical rod 6 is arranged on the surface of the lower pressure plate 11; and a screwing disk 3, which is arranged on the surface of the screw rod 2. When the sealing gasket 10 is worn, the screwing disk 3 is screwed, and the rotating ring 7 rotates on the surface of the screwing disk 3. The rotating ring 7 descends with the screwing disk 3, and the rotating ring 7 drives the lower pressure plate 11 to descend through the vertical rod 6.

[0025] Embodiment 2

[0026] On the basis of embodiment 1, the screw 2 is screwed into the inside of the bracket 1, the screw disk 3 is screwed into the surface of the screw 2, a sealing block 9 is provided at the end of the screw 2, the end section of the screw 2 is T-shaped, the end of the screw 2 is located inside the sealing block 9, the end of the screw 2 can rotate inside the sealing block 9, a top holding plate 8 is inserted into the surface of the bracket 1, a spring 5 is provided on the surface of the top holding plate 8, the other end of the spring 5 is connected to the surface of the bracket 1, the top holding plate 8 is pulled by the spring 5 and is held on the surface of the wellhead 4, and is clamped on the surface of the wellhead 4 by multiple groups of top holding plates 8.

[0027] A second annular groove 13 is provided on the surface of the sealing block 9, and the sealing gasket 10 is located in the second annular groove 13. A force block 14 is connected to the surface of the sealing gasket 10, and the force block 14 is inserted into the interior of the sealing block 9. After the lower pressure plate 11 is lowered, it is supported on the end of the force block 14, so that the force block 14 moves, and the movement of the force block 14 drives the sealing gasket 10 to move.

[0028] A rotating ring 7 is provided at the bottom of the screwing disk 3, and the rotating ring 7 can rotate on the surface of the screwing disk 3. A vertical rod 6 is fixed at the bottom of the rotating ring 7, and the end of the vertical rod 6 is fixed to the surface of the lower pressure plate 11. As the screwing disk 3 descends, the rotating ring 7 drives the lower pressure plate 11 to descend through the vertical rod 6. After the lower pressure plate 11 descends, it is supported on the end of the force-bearing block 14.

[0029] Embodiment 3

[0030] On the basis of the second embodiment, the lower pressing plate 11 is raised and lowered along with the screwing disk 3 , and the lower pressing plate 11 is inserted into the first annular groove 12 at the top of the sealing block 9 after it is lowered.

[0031] After the lower pressure plate 11 descends, it is supported on the end of the force-bearing block 14, so that the force-bearing block 14 moves. After the force-bearing block 14 moves, the sealing gasket 10 is deformed. After the force-bearing block 14 moves, it drives the sealing gasket 10 to move, so that the sealing gasket 10 moves in the second annular groove 13. When the sealing block 9 descends, the sealing gasket 10 can be more tightly supported on the inner wall of the wellhead 4.

[0032] When in actual use, the bracket 1 is placed on the top of the wellhead 4, and the supporting plate 8 is supported on the surface of the wellhead 4 under the pull of the spring 5, and is clamped on the surface of the wellhead 4 by multiple groups of supporting plates 8. The screw 2 is screwed, and the screw 2 drives the sealing block 9 to descend, and the sealing block 9 is inserted into the inside of the wellhead 4. A sealing gasket 10 is provided on the surface of the sealing block 9, and the sealing gasket 10 is located between the sealing block 9 and the wellhead 4 to play a sealing role. When the sealing gasket 10 is worn, the screwing disk 3 is screwed, and the rotating ring 7 rotates on the surface of the screwing disk 3. The rotating ring 7 descends with the screwing disk 3. The rotating ring 7 drives the lower pressure plate 11 to descend through the vertical rod 6. After the lower pressure plate 11 descends, it is supported on the end of the force-bearing block 14, so that the force-bearing block 14 moves. After the force-bearing block 14 moves, it drives the sealing gasket 10 to move, so that the sealing gasket 10 moves in the second annular groove 13. When the sealing block 9 descends, the sealing gasket 10 can be more tightly held on the inner wall of the wellhead 4 to enhance the sealing performance.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wellhead sealing device with a deformable sealing component, characterized in that: The wellhead sealing device with a deformable sealing component comprises: A support (1), a screw (2) is arranged on the surface of the support (1), and a wellhead (4) is arranged at the bottom of the support (1); A sealing block (9), a sealing gasket (10) is arranged on the surface of the sealing block (9), a first annular groove (12) is opened on the top of the sealing block (9), a lower pressing plate (11) is arranged on the top of the first annular groove (12), and a vertical rod (6) is arranged on the surface of the lower pressing plate (11); and The screwing disc (3) is arranged on the surface of the screw rod (2).

2. A wellhead sealing device with a deformable sealing component according to claim 1, characterized in that: The screw rod (2) is screwed into the interior of the bracket (1), the screw disk (3) is screwed into the surface of the screw rod (2), a sealing block (9) is arranged at the end of the screw rod (2), the end section of the screw rod (2) is T-shaped, the end of the screw rod (2) is located inside the sealing block (9), and the end of the screw rod (2) can rotate inside the sealing block (9), the surface of the bracket (1) is plugged with a top holding plate (8), the surface of the top holding plate (8) is provided with a spring (5), and the other end of the spring (5) is connected to the surface of the bracket (1).

3. A wellhead sealing device with a deformable sealing component according to claim 2, characterized in that: The surface of the sealing block (9) is provided with a second annular groove (13), the sealing gasket (10) is located in the second annular groove (13), the surface of the sealing gasket (10) is connected with a force-bearing block (14), and the force-bearing block (14) is inserted into the interior of the sealing block (9).

4. A wellhead sealing device with a deformable sealing component according to claim 3, characterized in that: The bottom of the screwing disk (3) is provided with a rotating ring (7), which can rotate on the surface of the screwing disk (3), and the bottom of the rotating ring (7) is fixed with a vertical rod (6), and the end of the vertical rod (6) is fixed to the surface of the lower pressure plate (11).

5. A wellhead sealing device with a deformable sealing component according to claim 4, characterized in that: The lower pressing plate (11) is raised and lowered along with the screwing disk (3), and after the lower pressing plate (11) is lowered, it is inserted into the first annular groove (12) at the top of the sealing block (9).

6. A wellhead sealing device with a deformable sealing component according to claim 5, characterized in that: After the lower pressure plate (11) is lowered, it is supported on the end of the force-bearing block (14), so that the force-bearing block (14) moves. After the force-bearing block (14) moves, the sealing gasket (10) is deformed.

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