Novel wellhead blowout preventer

Abstract

The utility model discloses a novel wellhead blowout preventer, which belongs to the field of blowout preventers and comprises a blowout preventer body, two first flanges are symmetrically and fixedly mounted on the blowout preventer body, connecting pipelines are mounted on the first flanges, and the first flanges and the connecting pipelines are composed of first fixing parts and second fixing parts. The first fixing part is composed of two semi-ring threaded plates, two semi-ring baffles and a plurality of connecting columns, the semi-ring baffles are fixedly installed on the inner walls of the semi-ring threaded plates, the connecting columns are fixedly installed at one ends of the two semi-ring baffles respectively, the second fixing part is composed of an inner threaded ring and an annular baffle, and the annular baffle is fixedly installed at one end of the inner threaded ring. The first fixing piece and the second fixing piece are arranged on the blowout preventer main body and the connecting pipeline and matched with each other, so that the connecting and fixing steps of the blowout preventer main body and the connecting pipeline are simpler, and the connecting and fixing efficiency of the blowout preventer main body and the connecting pipeline can be improved.

Description

Technical Field

[0001] The utility model relates to the field of blowout preventers, and particularly to a novel wellhead blowout prevention device. Background Technique

[0002] The wellhead blowout preventer is an important safety device for controlling wellhead blowout and leakage accidents. It plays a key protective role in oil drilling, well testing, workover, well completion and other operation processes. It can prevent the occurrence of blowout accidents, ensure the safety of workers' lives. At the same time, it reduces the risk of well leakage and improves the safety and efficiency of operations. The main types of blowout preventers are ram blowout preventers and annular blowout preventers. The ram blowout preventer drives the ram to close or open through hydraulic pressure, thereby closing or opening the wellhead. The annular blowout preventer uses the deformation of the rubber core to achieve the sealing of the drill pipe or the wellhead.

[0003] When the two ends of the blowout preventer are externally connected to pipelines, several bolts are usually used for connection and fixation. However, in the case of external shaking such as pipelines, the bolts are likely to become loose. In the existing patent application with the application number CN202323049458.X, a wellhead blowout preventer with good sealing performance is proposed. Although the limiting arc plate abuts against the annular groove of the threaded bolt, the threaded bolt can firmly fix the flange of the externally connected pipeline and will not become loose under external shaking and other conditions, but the steps of connection and fixation through multiple bolts are relatively cumbersome. During installation, multiple bolts need to be installed one by one, which will reduce the connection efficiency between the blowout preventer and the externally connected pipeline. Therefore, it needs to be improved. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a novel wellhead blowout prevention device, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A novel wellhead blowout prevention device includes a blowout preventer main body. Two first flanges are symmetrically and fixedly installed on the blowout preventer main body. A connecting pipeline is installed on the first flanges. The first flanges and the connecting pipeline are composed of a first fixing member and a second fixing member. The first fixing member consists of a semi-circular threaded plate, a semi-circular baffle plate and connecting columns. There are two semi-circular threaded plates and two semi-circular baffle plates. The semi-circular baffle plates are fixedly installed on the inner walls of the semi-circular threaded plates. There are several connecting columns, which are respectively fixedly installed at one ends of the two semi-circular baffle plates. The second fixing member consists of an internal threaded ring and an annular baffle plate. The annular baffle plate is fixedly installed on the inner wall of the internal threaded ring.

[0007] Preferably, several first installation holes are opened on the first flanges on the blowout preventer main body.

[0008] Preferably, the connecting pipe is composed of a pipe body and a second flange, and the second flange is fixedly installed at one end of the pipe body.

[0009] Preferably, a plurality of second mounting holes are formed in the second flange, and the diameters of the second mounting holes are the same as those of the first mounting holes.

[0010] Preferably, the half-ring baffle on the first fixing member can be sleeved on the pipe body, the half-ring threaded plate can be sleeved on the first flange and the second flange, and the connecting column can pass through the first mounting hole and the second mounting hole formed in the first flange and the second flange.

[0011] Preferably, the annular baffle on the second fixing member is movably sleeved on the blowout preventer body, the internal threaded ring can be installed on the two half-ring threaded plates on the first fixing member, and at the same time, the annular baffle can be sleeved on the outside of a plurality of connecting columns.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By arranging the first fixing member and the second fixing member on the blowout preventer body and the connecting pipe and making them cooperate with each other, the connection and fixing steps of the blowout preventer body and the connecting pipe can be made relatively simple, thereby improving the connection and fixing efficiency of the blowout preventer body and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is an exploded view of the blowout preventer body and the connecting pipe of the utility model;

[0016] Figure 3 is a schematic diagram of the structure of the first fixing member of the utility model;

[0017] Figure 4 is a schematic diagram of the structure of the second fixing member of the utility model.

[0018] In the figure: 1, blowout preventer body; 2, connecting pipe; 3, first fixing member; 4, second fixing member; 5, first flange; 6, first mounting hole; 7, pipe body; 8, second flange; 9, second mounting hole; 10, half-ring baffle; 11, connecting column; 12, half-ring threaded plate; 13, internal threaded ring; 14, annular baffle. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a new type of wellhead blowout preventer device includes a blowout preventer body 1. Two first flanges 5 are symmetrically and fixedly installed on the blowout preventer body 1. A connecting pipe 2 is installed on the first flange 5. The first flange 5 and the connecting pipe 2 are composed of a first fixing member 3 and a second fixing member 4. The first fixing member 3 is composed of a semi-circular threaded plate 10, a semi-circular baffle 11, and connecting columns 12. There are two semi-circular threaded plates 10 and two semi-circular baffles 11. The semi-circular baffle 11 is fixedly installed on the inner wall of the semi-circular threaded plate 10. A number of connecting columns 12 are provided and are respectively fixedly installed at one end of the two semi-circular baffles 11. The second fixing member 4 is composed of an internal threaded ring 13 and an annular baffle 14. The annular baffle 14 is fixedly installed on the inner wall of the internal threaded ring 13. When connecting and fixing the blowout preventer body 1 and the connecting pipe 2, the first flange 5 on the blowout preventer body 1 can be first contacted with the connecting pipe 2. Then, the first fixing member 3 can be installed on the blowout preventer body 1 and the connecting pipe 2. Finally, the second fixing member 4 can be installed and fixed to the first fixing member 3. At this time, the connection and fixing of the blowout preventer body 1 and the connecting pipe 2 are completed. By providing the first fixing member 3 and the second fixing member 4 on the blowout preventer body 1 and the connecting pipe 2 and making them cooperate with each other, the connection and fixing steps of the blowout preventer body 1 and the connecting pipe 2 can be made relatively simple, thereby improving the connection and fixing efficiency of the blowout preventer body 1 and the connecting pipe 2.

[0021] Furthermore, a number of first mounting holes 6 are provided on the first flange 5 of the blowout preventer body 1. The connecting pipe 2 is composed of a pipe body 7 and a second flange 8. The second flange 8 is fixedly installed at one end of the pipe body 7. A number of second mounting holes 9 are provided on the second flange 8. The diameters of the second mounting holes 9 and the first mounting holes 6 are the same. When connecting and fixing the blowout preventer body 1 and the connecting pipe 2, the first flange 5 on the blowout preventer body 1 can be made to contact the second flange 8 on the connecting pipe 2, and at the same time, the first mounting holes 6 and the second mounting holes 9 can be made coaxial.

[0022] Furthermore, the semi-circular baffle 11 on the first fixing member 3 can be sleeved on the pipe body 7, the semi-circular threaded plate 10 can be sleeved on the first flange 5 and the second flange 8, and the connecting columns 12 can pass through the first mounting holes 6 and the second mounting holes 9 provided on the first flange 5 and the second flange 8. When installing the first fixing member 3 on the blowout preventer body 1 and the connecting pipe 2, it is necessary to make the semi-circular baffle 11 sleeved on the pipe body 7, make the semi-circular threaded plate 10 sleeved on the first flange 5 and the second flange 8, and make the connecting columns 12 pass through the first mounting holes 6 and the second mounting holes 9.

[0023] Further, the annular baffle 14 on the second fixing member 4 is movably sleeved on the blowout preventer body 1. The internal thread ring 13 can be installed on the two semi-ring threaded plates 10 on the first fixing member 3. At the same time, the annular baffle 14 can be sleeved on the outside of a plurality of connecting columns 12. When installing and fixing the second fixing member 4 to the first fixing member 3, the internal thread ring 13 can be screwed onto the two semi-ring threaded plates 10, and finally the annular baffle 14 is made to contact the first flange 5.

[0024] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. The protection scope claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel wellhead blowout preventer, comprising a blowout preventer body (1), on which two first flanges (5) are symmetrically fixedly mounted, and on which a connecting pipe (2) is mounted, characterized in that: The first flange (5) and the connecting pipe (2) are formed by a first fixing member (3) and a second fixing member (4); the first fixing member (3) is composed of a semi-ring threaded plate (10), a semi-ring baffle (11) and a connecting column (12); two of the semi-ring threaded plate (10) and two of the semi-ring baffle (11) are provided; the semi-ring baffle (11) is fixedly mounted on the inner wall of the semi-ring threaded plate (10); a plurality of connecting columns (12) are provided and are respectively fixedly mounted on one end of the two semi-ring baffles (11); the second fixing member (4) is composed of an internal threaded ring (13) and an annular baffle (14); the annular baffle (14) is fixedly mounted on the inner wall of the internal threaded ring (13).

2. A novel wellhead blowout prevention device according to claim 1, characterized in that: A plurality of first mounting holes (6) are provided on the first flange (5) on the blowout preventer body (1).

3. A novel wellhead blowout prevention device according to claim 2, characterized in that: The connecting pipe (2) is composed of a pipe body (7) and a second flange (8), wherein the second flange (8) is fixedly mounted on one end of the pipe body (7).

4. A novel wellhead blowout prevention device according to claim 3, characterized in that: The second flange (8) is provided with a plurality of second mounting holes (9), and the diameter of the second mounting holes (9) is the same as that of the first mounting holes (6).

5. A novel wellhead blowout prevention device according to claim 4, characterized in that: The semi-annular baffle (11) on the first fixing member (3) can be sleeved on the pipeline body (7), the semi-annular threaded plate (10) can be sleeved on the first flange (5) and the second flange (8), and the connecting column (12) can pass through the first mounting hole (6) and the second mounting hole (9) opened on the first flange (5) and the second flange (8).

6. A novel wellhead blowout prevention device according to claim 5, characterized in that: The annular baffle (14) on the second fixing member (4) is movably mounted on the blowout preventer body (1), the internal threaded ring (13) can be mounted on the two half-ring threaded plates (10) on the first fixing member (3), and the annular baffle (14) can be mounted on the outside of a plurality of connecting columns (12).

Images