Ultrahigh pressure pipeline connecting device for well drilling and logging

Abstract

The utility model relates to the technical field of pipeline connecting devices, in particular to an ultrahigh pressure pipeline connecting device for well drilling and logging, which comprises a female joint mechanism, the female joint mechanism comprises a female joint pipeline, the female joint pipeline is mounted on an equipment shell in a communicated manner, a first annular plate is fixedly connected to the outer wall of the female joint pipeline, and a second annular plate is fixedly connected to the outer wall of the female joint pipeline. At least one annular groove is formed in the side face of the first annular plate, an elastic cushion is arranged on the inner wall of the annular groove, and a pressing and fixing mechanism is arranged on the female connection pipeline. And the male connector mechanism comprises a mounting seat, one side of the mounting seat is provided with an ultrahigh pressure pipeline in a communicating mode, and the other side of the mounting seat is provided with a male connection pipeline in a communicating mode. The device can still keep stable sealing in a high-pressure state, and is convenient to disassemble and assemble and good in sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection device technology, and in particular to an ultra-high pressure pipeline connection device for drilling and logging. Background Technology

[0002] In oil drilling and logging operations, high-pressure fluid operations are frequent, which places extremely high demands on the performance of pipeline connection devices. Traditional connection devices, such as the common unibody joint, have many drawbacks. During disassembly and installation, because the female joint and the wing nut are connected by threads, a large number of rotations are required, making quick disassembly and assembly difficult and greatly reducing operational efficiency. Moreover, threaded connections can sometimes break, affecting the service life of the device, and sometimes loose threads can also cause a reduction in sealing performance.

[0003] Furthermore, some connection devices have poor sealing and anti-loosening performance, making them prone to leakage and loosening under high-pressure environments. This not only affects the smooth progress of operations but may also lead to safety accidents. At the same time, existing connection devices lack versatility when facing complex operating environments and pipelines of different specifications, failing to flexibly adapt to various working conditions. Therefore, the development of a rapid-assembly, high-sealing, and anti-loosening ultra-high-pressure pipeline connection device for drilling and logging is urgently needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes an ultra-high pressure pipeline connection device for drilling and logging, which can maintain a stable seal under high pressure, and is easy to disassemble and assemble, with excellent sealing performance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an ultra-high pressure pipeline connection device for drilling and logging, comprising:

[0006] A female connector mechanism includes a female connector pipe, which is connected to the equipment housing. A first annular plate is fixedly connected to the outer wall of the female connector pipe. At least one annular groove is opened on the side of the first annular plate. An elastic pad is provided on the inner wall of the annular groove. A pressure fixing mechanism is provided on the female connector pipe.

[0007] A male connector mechanism includes a mounting base. One side of the mounting base is connected to an ultra-high pressure pipeline, and the other side of the mounting base is connected to a male pipe. A third annular plate is installed on the side of the male pipe away from the male pipe. The diameter of the third annular plate is larger than the diameter of the male pipe. One side of the third annular plate is provided with an annular protrusion that mates with an annular groove. The annular protrusion compresses an elastic pad. The clamping mechanism makes the first annular plate and the third annular plate seal together.

[0008] Furthermore, a third annular plate is fixedly connected to the side of the male pipe away from the mounting base. A second circular groove is formed in the middle of the third annular plate, and the second circular groove communicates with the male pipe. Annular protrusions are fixedly installed on the side of the third annular plate away from the male pipe, and the number of annular protrusions is the same as the number of annular grooves.

[0009] Furthermore, there are two annular protrusions and annular grooves, and the two annular grooves have the same axis and the same axis as the female connector pipe.

[0010] Furthermore, the elastic pad is made of rubber.

[0011] Furthermore, the clamping mechanism includes a second mounting plate, an annular protrusion, a pressure plate, a second annular plate, and a circular rotating plate. The outer wall of the female connector is fixedly connected to the second mounting plate and the second annular plate. The second annular plate, the second mounting plate, and the first annular plate are arranged sequentially from left to right. A circular groove is opened in the second mounting plate. The rotating column passes through the rotating column. A pressure plate is fixedly connected to the side of the rotating column near the first annular plate. A circular rotating plate is fixedly connected to the side of the rotating column away from the pressure plate. When clamping, the circular rotating plate presses on the left side of the second annular plate, and the pressure plate presses on the right side of the third annular plate, so that the third annular plate and the first annular plate are sealed together.

[0012] Furthermore, a conical groove is provided on the inner side of the annular groove, and a conical plate that matches the conical groove is provided on the outer wall of the annular protrusion for guiding the mechanism, so that the first annular plate and the third annular plate are sealed together at a preset angle.

[0013] Furthermore, a bearing is installed inside the circular groove, and the circular groove is rotatably connected to the rotating column through the bearing.

[0014] Furthermore, an O-ring is fixedly installed on the right side of the third annular plate, and the pressure plate presses the right side of the O-ring.

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

[0016] The connection mechanism can only be removed when rotating, and the female pipe and the ultra-high pressure pipeline can only be separated when the device moves left and right. This prevents the pressure plate from rotating due to the force generated under high pressure, thus ensuring that the connection mechanism can still maintain a good seal under high pressure.

[0017] Furthermore, the device does not require multiple turns of screws or other operations to achieve connection and installation. It only needs to be rotated 180 degrees to complete the installation of the female connection pipe and the ultra-high pressure pipeline, which saves time.

[0018] The device is equipped with multiple seals, resulting in excellent sealing performance. Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0021] Figure 2 This is a schematic diagram of the female connector mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the male connector mechanism of this utility model;

[0023] Figure 4 For the present utility model Figure 2 A magnified structural diagram at point A;

[0024] Figure 5 For the present utility model Figure 3 A magnified structural diagram at point B.

[0025] The following are the labels in the diagram: 1. Equipment housing; 2. Female connector pipe; 3. Ultra-high pressure pipeline; 4. Mounting base; 5. Male connector pipe; 6. First annular plate; 7. Annular groove; 8. Pressure plate; 9. Second mounting plate; 10. Second annular plate; 11. Circular rotating plate; 12. Rotating column; 13. Circular groove; 14. Third annular plate; 15. Circular protrusion; 16. Second circular groove strip. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] Example 1:

[0028] Key reference Figure 1-5 The device mainly includes a female connector 2, an ultra-high pressure pipeline 3, a mounting base 4, a male connector 5, a rotating column 12, a second annular plate 10, a circular rotating plate 11, a pressure plate 8, and a second mounting plate 9.

[0029] A female connector pipe 2 is fixedly installed on the equipment housing 1, that is, the female connector pipe 2 is connected to the inner cavity of the equipment housing 1.

[0030] The outer wall of the female connector pipe 2 is fixedly connected with a second annular plate 10, two second mounting plates 9, a first annular plate 6, and an annular groove 7 opened thereon. The second annular plate 10, the second mounting plate 9, and the first annular plate 6 are arranged sequentially from left to right.

[0031] The outer walls of the second annular plate 10 and the annular groove 7 are both equipped with elastic pads to better compress or seal the device.

[0032] Both second mounting plates 9 have circular grooves 13. The rotating column 12 passes through the second mounting plate 9, and a pressure plate 8 is fixedly connected to the right side of the rotating column 12. The pressure plate 8 is placed on one side of the rotating column 12 and is perpendicular to the rotating column 12. A circular annular rotating plate 11 is fixedly installed on the left side of the rotating column 12. The axis of the annular rotating plate 11 is the same as the axis of the rotating column 12.

[0033] The circular rotating plate 11 can be pressed against the left outer wall of the second annular plate 10.

[0034] There are two methods for connecting the second annular plate 10 and the circular groove 13, and either one can be chosen.

[0035] The first type is: the circular groove 13 is just a circular groove, and the diameter of the rotating column 12 is the same as that of the circular groove 13, so that the rotating column 12 can rotate within the circular groove 13.

[0036] The second type is: a bearing is fixedly installed in the circular groove 13, and the rotating column 12 is installed in the bearing, that is, the rotating column 12 is limited to the rotational connection in the circular groove 13.

[0037] The mounting base 4 has a connecting hole, and an ultra-high pressure pipeline 3 is fixedly installed on the right side of the mounting base 4. The ultra-high pressure pipeline 3 is connected to the mounting base 4.

[0038] A male pipe 5 is fixedly installed on the left side of the mounting base 4, and the male pipe 5 is connected to the mounting base 4.

[0039] A third annular plate 14 is fixedly connected to the left side of the male connector 5. A second circular groove 16 is formed in the middle of the third annular plate 14, and the second circular groove 16 communicates with the male connector 5. The diameter of the third annular plate 14 is larger than the diameter of the male connector 5, which facilitates subsequent compression. An O-ring is installed on the outer right side of the third annular plate 14. The O-ring has a certain thickness, and when the pressure plate 8 is pressed on it, the O-ring deforms to a certain extent.

[0040] The male connector 5 and the third annular plate 14 are fitted onto the outer wall of the female connector 2, and then the third annular plate 14 is pressed against the first annular plate 6. At this time, the cooperation between the first annular plate 6 and the third annular plate 14 creates a sealed environment. Then, the circular rotating plate 11 is rotated so that the pressure plate 8 presses against the right side of the third annular plate 14, completing the fixed installation of the third annular plate 14. At this time, the circular rotating plate 11 presses against the left side of the second annular plate 10, and the pressure plate 8 presses against the right side of the third annular plate 14, so that the device is self-locking. The O-rings provided have a rightward driving force, so that the device will not move easily after being pressed. The elastic pads on the outer wall of the first annular plate 6 and the elastic pads on the outer wall of the third annular plate 14 are tightly fitted to form a sealed environment.

[0041] Example 2: Based on Example 1, a technical means was added to make the first annular plate 6 and the third annular plate 14 sealed together.

[0042] Key reference Figure 3 Two annular protrusions 15 are fixedly installed on the left side of the third annular plate 14. The two annular protrusions 15 have the same axis and different diameters.

[0043] Two annular grooves 7 are opened on the right side of the first annular plate 6. The inner wall of the annular groove 7 is fixedly installed with an elastic pad made of rubber, and the two annular protrusions 15 are tightly fitted with the annular groove 7.

[0044] Furthermore, a tapered plate can be fixedly installed on the outer wall of the annular protrusion 15, and a tapered groove is provided in the annular groove 7 to guide the third annular plate 14, so that the third annular plate 14 is sealed and fitted with the first annular plate 6 at a preset position.

[0045] The other features of Example 2 are the same as those of Example 1.

[0046] In practice, the ultra-high pressure pipeline 3 is first welded to the right side of the mounting base 4, and then the male connector 5 is welded to the left side of the mounting base 4. The male connector 5, the mounting base 4, and the ultra-high pressure pipeline 3 are connected. The third annular plate 14 is fixedly welded to the right side of the male connector 5.

[0047] The female connector pipe 2 is welded to the left side of the equipment housing 1. The second annular plate 10, two second mounting plates 9, and the first annular plate 6 are fixedly welded to the outer wall of the female connector pipe 2 from left to right.

[0048] First, rotate the circular plate 11 so that the two pressure plates 8 unfold outward. At this time, the pressure plates 8 will not obstruct the movement of the third annular plate 14.

[0049] It is determined that the inner diameter of the third annular plate 14 is larger than the outer diameter of the female connector pipe 2, thus facilitating the fitting of the third annular plate 14 onto the outer wall of the female connector pipe 2. Then, the annular protrusion 15 is secured to the inner wall of the annular groove 7, pressing against the elastic pad on the inner wall of the annular groove 7. At this point, the two annular protrusions 15 and the annular groove 7 form two sets of seals. Then, the third annular plate 14 and the first annular plate 6 form another set of seals. This ensures good sealing performance of the device.

[0050] At this time, rotating the circular plate 11 causes the pressure plate 8 to press on the third annular plate 14. The elastic pad in the annular groove 7 and the O-ring pad on the third annular plate 14 make the pressure plate 8 relatively securely seal the female connector pipe 2 and the ultra-high pressure pipeline 3 together, and the operation is simple.

[0051] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high-pressure pipeline connection device for drilling and logging, characterized in that, include: The female connector mechanism includes a female pipe (2), which is installed in communication on the equipment housing (1). A first annular plate (6) is fixedly connected to the outer wall of the female pipe (2). At least one annular groove (7) is opened on the side of the first annular plate (6). An elastic pad is provided on the inner wall of the annular groove (7). A pressure fixing mechanism is provided on the female pipe (2). The male connector mechanism includes a mounting base (4), one side of which is connected to an ultra-high pressure pipeline (3), and the other side of which is connected to a male pipe (5). A third annular plate (14) is installed on the side of the male pipe (5) away from the male pipe (5). The diameter of the third annular plate (14) is larger than the diameter of the male pipe (5). One side of the third annular plate (14) is provided with an annular protrusion (15) that cooperates with the annular groove (7). The annular protrusion (15) squeezes the elastic pad. The pressing mechanism makes the first annular plate (6) and the third annular plate (14) sealed together.

2. The ultra-high pressure pipeline connection device for drilling and logging according to claim 1, characterized in that, A third annular plate (14) is fixedly connected to the side of the male pipe (5) away from the mounting base (4). A second circular groove (16) is opened in the middle of the third annular plate (14). The second circular groove (16) is connected to the male pipe (5). A ring-shaped protrusion (15) is fixedly installed on the side of the third annular plate (14) away from the male pipe (5). The number of ring-shaped protrusions (15) is the same as the number of annular grooves (7).

3. The ultra-high pressure pipeline connection device for drilling and logging according to claim 2, characterized in that, The number of the annular protrusion (15) and the annular groove (7) is two, and the two annular grooves (7) have the same axis and the same axis as the female connector (2).

4. The ultra-high pressure pipeline connection device for drilling and logging according to claim 3, characterized in that, The elastic pad is made of rubber.

5. The ultra-high pressure pipeline connection device for drilling and logging according to claim 4, characterized in that, The clamping mechanism includes a second mounting plate (9), an annular protrusion (15), a pressure plate (8), a second annular plate (10), and a circular rotating plate (11). The outer wall of the female connector pipe (2) is fixedly connected to the second mounting plate (9) and the second annular plate (10). The second annular plate (10), the second mounting plate (9), and the first annular plate (6) are arranged from left to right. A circular groove (13) is opened in the second mounting plate (9). The rotating column (12) passes through the rotating column (12). The side of the rotating column (12) close to the first annular plate (6) is fixedly connected to the pressure plate (8). The side of the rotating column (12) away from the pressure plate (8) is fixedly connected to the circular rotating plate (11). When clamping, the circular rotating plate (11) presses on the left side of the second annular plate (10), and the pressure plate (8) presses on the right side of the third annular plate (14), so that the third annular plate (14) and the first annular plate (6) are sealed together.

6. The ultra-high pressure pipeline connection device for drilling and logging according to claim 5, characterized in that, The inner side of the annular groove (7) is provided with a conical groove, and the outer wall of the annular protrusion (15) has a conical plate that matches the conical groove, which is used for the guiding mechanism so that the first annular plate (6) and the third annular plate (14) are sealed together at a preset angle.

7. The ultra-high pressure pipeline connection device for drilling and logging according to claim 6, characterized in that, A bearing is installed in the circular groove (13), and the circular groove (13) is connected to the rotating column (12) through the bearing for limiting rotation.

8. The ultra-high pressure pipeline connection device for drilling and logging according to claim 7, characterized in that, An O-ring is fixedly installed on the right side of the third annular plate (14), and the pressure plate (8) presses the right side of the O-ring.

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