CN219101295U

CN219101295U - Rotary blowout preventer packing assembly

Info

Publication number: CN219101295U
Application number: CN202320270286.XU
Authority: CN
Inventors: 刘勇; 李森才; 陈帅
Original assignee: Chengdu Tiansheng Drilling And Production Equipment Co ltd
Current assignee: Chengdu Tiansheng Drilling And Production Equipment Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-05-30
Anticipated expiration: 2033-02-21

Abstract

The utility model belongs to the technical field of blowout preventers and discloses a rotary blowout preventer packing assembly, which comprises a protection outer cylinder, wherein an upper sealing cover is arranged at the upper end of the protection outer cylinder, an upper rubber core is arranged in the protection outer cylinder, the upper rubber core is connected with the upper sealing cover through a wire planting bolt, and the wire planting bolt penetrates through the upper end of the upper sealing cover and is connected with a nut; the protection urceolus is inside protruding to be equipped with round collar, and the collar is located upper portion rubber core below, and the upper end of crossover sub is located the protection urceolus, and the outer wall of crossover sub and the laminating of the inner wall of protection urceolus, and the collar links to each other with the crossover sub. The packing assembly is convenient for rapidly disassembling and replacing the upper rubber core on site, and meanwhile, the upper sealing cover joint formed by the upper sealing cover and the clamping block has the functions of driving, hanging and sealing the rubber core, so that the whole height can be reduced without influencing the use strength, the disassembling and replacing difficulty is reduced, the efficiency is improved, and the processing is simpler compared with the upper rubber core assembly in the prior art.

Description

Rotary blowout preventer packing assembly

Technical Field

The utility model belongs to the technical field of blowout preventers, and particularly relates to a rotary blowout preventer packing assembly.

Background

After the rotary blowout preventer is matched with the hydraulic blowout preventer, the drilling tool check valve and the snubbing pressurizing device or the downhole casing valve, the pressurized drilling and snubbing operation can be safely performed, and the rotary blowout preventer has an important effect on finding and protecting a low-pressure oil-gas layer.

The upper rubber core assembly is used as an important component of the bearing assembly of the rotary blowout preventer and generally consists of an upper sealing cover joint, a driving core supplementing assembly, an upper rubber core suspension, an upper rubber core outer cylinder and the like. The lower clamping groove of the driving core supplementing assembly is matched with the corresponding clamping groove of the upper sealing cover connector, the drill rod penetrates through the rubber core, the rubber core seals the drill rod, and when the square drill rod drives the driving core supplementing assembly and the upper sealing cover connector to rotate, the upper sealing cover connector drives the upper rubber core to rotate together, so that the whole rotating assembly bearing is driven to rotate together.

The upper rubber core assembly adopted at present, such as chinese patent with publication number CN206448792U, adopts a screw-thread fit mode to connect the upper rubber core gland and the upper rubber core outer cylinder, and makes upper sealing cover and upper outer cylinder tightly connected through big screw thread to rely on upper sealing cover lateral wall O-ring to realize cavity seal, but this published patent compacts the drive hanger in upper outer cylinder through upper sealing cover, and this kind of structural style has some problems: the integral driving sleeve has a heavy structure and a large size, is inconvenient to disassemble when emergency maintenance is required on site, and consumes labor and time for site operation.

For another example, in chinese patent with publication number CN212177102U, the upper cover and the upper outer cylinder are connected by bolts and sealed by O-rings, but the upper cover of the publication has no top thread hole reserved for disassembly, which is time-consuming and labor-consuming, and the whole structure of the upper rubber core assembly is still heavy.

And chinese patent with publication number CN212105821U, the upper rubber core driving hanger is fastened by means of the embedded groove and the limit pin, but the connection in this way is easy to deform at the limit position due to extrusion deformation caused by high pressure of the cavity, so as to affect the sealing effect and fastening effect, and the whole is heavy.

Disclosure of Invention

The present utility model aims to solve the above technical problems at least to some extent. To this end, the present utility model is directed to a rotary blowout preventer packing assembly.

The technical scheme adopted by the utility model is as follows:

the rotary blowout preventer packing assembly comprises a protection outer barrel, wherein an upper sealing cover is arranged at the upper end of the protection outer barrel, an upper rubber core is arranged in the protection outer barrel, the upper rubber core is connected with the upper sealing cover through a wire planting bolt, and the wire planting bolt penetrates through the upper end of the upper sealing cover to be connected with a nut; the protection urceolus is inside protruding to be equipped with round collar, and the collar is located upper portion rubber core below, and the upper end of crossover sub is located the protection urceolus, and the outer wall of crossover sub and the laminating of the inner wall of protection urceolus, and the collar links to each other with the crossover sub.

Preferably, the upper sealing cover and the mounting ring are provided with top thread holes. A lifting ring mounting hole is formed in the upper sealing cover, and a lifting ring screw is arranged in the lifting ring mounting hole.

Preferably, an upper sealing cover is arranged at the upper end of the protective outer cylinder through a hexagonal bolt, and the mounting ring is connected with the adapter through the hexagonal bolt.

Preferably, a circle of mounting groove is arranged on the outer wall of the adapter, and a sealing ring is arranged in the mounting groove.

Preferably, a plurality of clamping blocks are convexly arranged on the upper sealing cover, the clamping blocks are circumferentially arranged, and the driving assembly is mounted on the clamping blocks in a matched mode.

Preferably, the adapter is provided with a connecting through hole, and the hexagon bolt is arranged in the connecting through hole to connect the adapter with the central tube.

The beneficial effects of the utility model are as follows:

the rotary blowout preventer packing assembly provided by the utility model is convenient for rapidly disassembling and replacing the upper rubber core on site, and meanwhile, the upper sealing cover joint formed by the upper sealing cover and the clamping block has the functions of driving, hanging and sealing the rubber core, so that the whole height can be reduced without influencing the use strength, the disassembling and replacing difficulty is reduced, the efficiency is improved, and the processing is simpler compared with the upper rubber core assembly in the prior art.

Drawings

FIG. 1 is a schematic view of a rotary blowout preventer of the present utility model.

FIG. 2 is a schematic view of a rotary blowout preventer packing assembly of the present utility model.

Fig. 3 is a semi-sectional view of the protective outer tub of the present utility model.

Fig. 4 is a schematic view of the upper closure of the present utility model.

Fig. 5 is a semi-sectional view of the adapter of the present utility model.

In the figure: 1-a protective outer cylinder; 2-an upper cover; 3-upper rubber core; 4-wire planting bolts; 5-nuts; 6-mounting ring; 7-converting joint; 8-clamping blocks; 9-a drive assembly; 10-top thread hole; 11-eye screws; 12-sealing rings; 13-connecting through holes; 14-a first hexagonal bolt; 15-a second hexagon bolt.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present utility model, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the product of the present utility model is used, or the orientation or positional relationship conventionally understood by those skilled in the art is merely for convenience of describing the present utility model and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for understanding as indicating or implying a relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The utility model will be further described with reference to the drawings and specific examples.

A schematic of the structure of a rotary blowout preventer is shown in fig. 1, and the packing assembly is located at the upper part of the rotary blowout preventer.

As shown in fig. 2 to 5, the rotary blowout preventer packing assembly of the present embodiment includes a protection outer cylinder 1, an upper sealing cover 2 is mounted at the upper end of the protection outer cylinder 1 in a sealing manner through a first hexagonal bolt 14, an upper rubber core 3 is disposed in the protection outer cylinder 1, the upper rubber core 3 is connected with the upper sealing cover 2 through a wire planting bolt 4, the wire planting bolt 4 penetrates out of the upper end of the upper sealing cover 2 to be connected with a nut 5, the nut 5 is screwed down to fix the upper sealing cover 2 and the upper rubber core 3, and the upper sealing cover 2 has the functions of sealing and rubber core hanging.

The inside protruding round collar 6 that is equipped with of protection urceolus 1, collar 6 are located upper portion rubber core 3 below, and the upper end of crossover sub 7 is located protection urceolus 1, and the outer wall of crossover sub 7 is laminated with the inner wall of protection urceolus 1, is equipped with round mounting groove on the outer wall of crossover sub 7, installs sealing washer 12 in the mounting groove, and collar 6 links to each other with crossover sub 7 through second hexagon bolt 15. The adapter 7 is provided with a connecting through hole 13, and a third hexagon bolt is arranged in the connecting through hole 13 to connect the adapter 7 with a central pipe of the rotary blowout preventer.

The upper part of the upper sealing cover 2 is convexly provided with a plurality of clamping blocks 8, the clamping blocks 8 are circumferentially arranged, a driving clamping groove is formed between every two clamping blocks 8, and a driving assembly 9 is mounted on the clamping blocks 8 in a matched mode. The upper sealing cover 2 and the clamping block 8 are integrally formed to form an upper sealing cover joint, so that the processing difficulty is reduced, the disassembly is more convenient, the overall height is reduced, the overall weight is reduced, and more environments can be adapted.

In this embodiment, the top wire holes 10 are formed on the upper cover 2 and the mounting ring 6, which is convenient for disassembly. The upper sealing cover 2 is provided with a lifting ring mounting hole, and a lifting ring screw 11 is arranged in the lifting ring mounting hole.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims

1. A rotary blowout preventer packing assembly, characterized in that: the protective outer cylinder (1) is included, an upper sealing cover (2) is arranged at the upper end of the protective outer cylinder (1), an upper rubber core (3) is arranged in the protective outer cylinder (1), the upper rubber core (3) is connected with the upper sealing cover (2) through a wire planting bolt (4), and the wire planting bolt (4) penetrates out of the upper end of the upper sealing cover (2) to be connected with a nut (5); the protection urceolus (1) is inside protruding to be equipped with round collar (6), and collar (6) are located upper portion rubber core (3) below, and the upper end of crossover sub (7) is located protection urceolus (1), and the outer wall of crossover sub (7) is laminated with the inner wall of protection urceolus (1), and collar (6) link to each other with crossover sub (7).

2. The rotary blowout preventer package assembly according to claim 1, wherein: the upper part closing cap (2) epirelief is equipped with a plurality of fixture blocks (8), and fixture block (8) are circumference and arrange, and drive assembly (9) cooperation is installed on fixture block (8).

3. The rotary blowout preventer package assembly according to claim 2, wherein: the upper sealing cover (2) and the clamping block (8) are integrally formed.

4. The rotary blowout preventer package assembly according to claim 1, wherein: the upper sealing cover (2) and the mounting ring (6) are respectively provided with a top thread hole (10).

5. The rotary blowout preventer package assembly according to claim 1, wherein: a lifting ring mounting hole is formed in the upper sealing cover (2), and a lifting ring screw (11) is arranged in the lifting ring mounting hole.

6. The rotary blowout preventer package assembly according to claim 1, wherein: the upper end of the protective outer cylinder (1) is provided with an upper sealing cover (2) through a hexagonal bolt, and the mounting ring (6) is connected with the adapter (7) through the hexagonal bolt.

7. The rotary blowout preventer package assembly according to claim 1, wherein: a circle of mounting groove is formed in the outer wall of the adapter (7), and a sealing ring (12) is arranged in the mounting groove.

8. The rotary blowout preventer package assembly according to claim 1, wherein: the adapter (7) is provided with a connecting through hole (13), and the hexagon bolt is arranged in the connecting through hole (13) to connect the adapter (7) with the central tube.