Hydraulic clamp type quick connecting device

Abstract

The utility model discloses a hydraulic clamp type quick connecting device, relates to the technical field of blowout preventer connection, and aims to solve the problem of long installation time of the existing blowout preventer, the hydraulic clamp type quick connecting device comprises a special casing head and a special drilling cross, the special casing head is provided with an upper flange plate, and the special drilling cross is provided with a lower flange plate; the special well drilling four-way joint is provided with a lower flange plate and an extending part arranged at the bottom of the lower flange plate, the extending part is arranged in the special well drilling four-way joint in a pluggable mode, and a hydraulic clamping device is arranged on the lower flange plate, moves in the radial direction of the lower flange plate and is used for clamping the lower flange plate and the upper flange plate.

Description

Technical Field

[0001] The utility model relates to the technical field of blowout preventer connection, and more specifically, to a hydraulic clamp type quick connection device. Background Art

[0002] At present, with the development of shale oil in the eastern part of China and the development of new blocks in the western market, the amount of oil drilling work has increased significantly compared with previous years, and the relocation and installation work of the drilling rig team has also increased accordingly.

[0003] During the relocation and installation process of the drilling rig team, the disassembly and assembly of the blowout preventer group is a relatively cumbersome step. Most of the current installation steps of the blowout preventer are that after the blowout preventer arrives at the well site, it is installed level by level by on-site workers. The workers must work near the wellhead for a long time, with a large amount of labor, which affects the operation efficiency and also has certain safety risks. Currently, in on-site work, it takes 4 to 8 hours to assemble and install the blowout preventer group once. If the installation is blocked or not smooth, the installation time will be even longer. Therefore, a faster connection method is now needed to replace the existing installation method to reduce the time for installing the blowout preventer group.

[0004] The existing connection method of the blowout preventer is flange connection, which uses a steel ring for sealing. During installation, on-site workers need to use a hydraulic wrench to tighten one by one, and use a sledgehammer to cooperate with a knocking wrench to tighten in a specified order, which is time-consuming and laborious and not easy to install.

[0005] Therefore, how to solve the problem of the long installation time of the existing blowout preventer is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0006] In view of this, the purpose of the utility model is to provide a hydraulic clamp type quick connection device, which can shorten the installation time of the blowout preventer and improve the installation efficiency of the blowout preventer.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A hydraulic clamp type quick connection device includes: a special casing head and a special drilling four-way. The special casing head has an upper flange plate. The special drilling four-way has a lower flange plate and an extension part arranged at the bottom of the lower flange plate. The extension part is arranged in the special drilling four-way in a pluggable manner. A hydraulic clamp device is arranged on the lower flange plate. The hydraulic clamp device is arranged to move radially along the lower flange plate, and the hydraulic clamp device is used for clamping the lower flange plate and the upper flange plate.

[0009] Preferably, the hydraulic clamp device includes two hydraulic devices and two semi-circular clamps. The clamps are provided with hinge blocks for hinging the hydraulic devices, and the hydraulic devices are used for driving the clamps to move radially along the lower flange plate.

[0010] Preferably, two hydraulic devices are arranged at the same end of the two clamps and are arranged vertically, and the output ends of the two hydraulic devices are connected to the same clamp.

[0011] Preferably, guiding structures are provided at the other ends of the two clamps. The guiding structures include slide rails and sliders movably arranged along the slide rails. There are two sliders, and the two sliders are connected to the corresponding clamps. Limit structures are provided at both ends of the slide rails to limit the sliders within the slide rails.

[0012] Preferably, two hydraulic devices are symmetrically arranged at both ends of the clamp, and the output ends of the two hydraulic devices are connected to the same clamp. A guiding column connected to the lower flange is provided on the clamp. The guiding column extends along the radial direction of the lower flange, and the clamp is movably arranged along the guiding column. A limit stop is provided at the end of the guiding column.

[0013] Preferably, a safety bolt is provided on the upper end surface of one clamp, and a corresponding safety nut is provided on the upper end surface of the other clamp. The safety bolt is movably arranged in the safety nut, and the safety bolt is locked with the safety nut through a locking nut to fix the positions of the two clamps.

[0014] Preferably, the longitudinal cross-sectional shape of the clamp is C-shaped, and a step portion for limiting the lower flange and the upper flange is provided on the inner wall of the clamp.

[0015] Preferably, the hydraulic devices are all connected to the power source through an oil circuit. A hydraulic distributor is provided on the oil circuit, and a reversing valve is provided on the power source.

[0016] Preferably, the hydraulic device includes a hydraulic cylinder and a hydraulic rod movably arranged in the hydraulic cylinder. The hydraulic cylinder is connected to the power source through an oil circuit.

[0017] Preferably, an annular groove is provided on the outer wall of the extension portion, and a seal is provided in the annular groove.

[0018] The hydraulic clamp type quick connection device provided by the utility model comprises a special casing head and a special drilling four-way. Specifically, the special casing head has an upper flange, and the special drilling four-way has a lower flange and an extension part arranged at the bottom of the lower flange. The extension part is inserted into the special drilling four-way in a pluggable manner. When it is necessary to install the special drilling four-way on the special casing head, the extension part of the special drilling four-way is inserted into the special casing head to achieve the preliminary connection between the special drilling four-way and the special casing head. A hydraulic clamp device is arranged on the lower flange. The hydraulic clamp device is arranged to move radially along the lower flange. The hydraulic clamp device is used for clamping the lower flange and the upper flange. After the extension part is inserted in place, the hydraulic clamp device is started, so that the hydraulic clamp device moves radially inward along the lower flange until the hydraulic clamp device clamps the upper flange and the lower flange and then stops running, so as to realize the quick installation of the special drilling four-way, thereby realizing the quick installation of the blowout preventer already installed on the special drilling four-way, further saving the installation time of the blowout preventer at the construction site, and indirectly improving the installation efficiency of the blowout preventer. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0020] Figure 1 Structural schematic diagram of the hydraulic clamp type quick connection device provided by the present utility model;

[0021] Figure 2 Cross-sectional view of the hydraulic clamp type quick connection device provided by the present utility model;

[0022] Figure 3 Installation schematic diagram of the hydraulic clamp type quick connection device provided by the present utility model;

[0023] Figure 4 For Figure 1 Structural schematic diagram of another embodiment of

[0024] Figure 5 For Figure 4 Cross-sectional view of

[0025] Figure 6 Partial enlarged view of the hydraulic clamp type quick connection device provided by the present utility model.

[0026] Reference Signs:

[0027] 1 - Special casing head, 11 - Upper flange;

[0028] 2 - Special drilling four - way, 21 - Lower flange, 22 - Extension part, 221 - Annular groove;

[0029] 3 - Hydraulic clamp device, 31 - Hydraulic device, 32 - Clamp, 321 - Step part, 33 - Hinge block;

[0030] 4 - Guide structure;

[0031] 5 - Guide post;

[0032] 6 - Limit stop block;

[0033] 7 - Seal;

[0034] 8 - Reducing flange. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] It should be noted that the orientation terms such as "upper, lower, inner, outer" below are defined based on the accompanying drawings of the specification.

[0038] The core of the present invention is to provide a hydraulic clamp - type quick - connection device, which can shorten the installation time of the blowout preventer and improve the installation efficiency of the blowout preventer.

[0039] Please refer to Figure 1 and Figure 2 A hydraulic clamp - type quick - connection device includes a special casing head 1 and a special drilling four - way 2.

[0040] Specifically, the special casing head 1 has an upper flange 11, the special drilling spool 2 has a lower flange 21 and an extension 22 provided at the bottom of the lower flange 21. The extension 22 is detachably provided inside the special drilling spool 2. When it is necessary to install the special drilling spool 2 on the special casing head 1, the extension 22 of the special drilling spool 2 is inserted into the special casing head 1 to achieve the preliminary connection between the special drilling spool 2 and the special casing head 1. A hydraulic clamp device 3 is provided on the lower flange 21. The hydraulic clamp device 3 is arranged to move radially along the lower flange 21. The hydraulic clamp device 3 is used to clamp the lower flange 21 and the upper flange 11. After the extension 22 is inserted in place, the hydraulic clamp device 3 is started, so that the hydraulic clamp device 3 moves radially inward along the lower flange 21 until the hydraulic clamp device 3 clamps the upper flange 11 and the lower flange 21 and then stops running, so as to realize the rapid installation of the special drilling spool 2, thereby realizing the rapid installation of the blowout preventer already installed on the special drilling spool 2, further saving the installation time of the blowout preventer at the construction site, and indirectly improving the installation efficiency of the blowout preventer.

[0041] For the hydraulic clamp type quick connection device arranged in the above manner, the special drilling spool 2 and the blowout preventer above it are connected by bolts and sealed with steel rings. When installing the blowout preventer, the hydraulic clamp device 3 is opened, so that the extension 22 at the lower part of the special drilling spool 2 is placed inside the special casing head 1. After it is placed in place, the hydraulic clamp device 3 is closed to realize the rapid installation of the blowout preventer, so as to shorten the time for installing the blowout preventer at the construction site, thereby improving the installation efficiency of the blowout preventer.

[0042] In the above embodiment, the hydraulic clamp device 3 includes two hydraulic devices 31 and two semi-circular clamps 32. The clamp 32 is provided with a hinge block 33 for hinging the hydraulic device 31. The hydraulic device 31 is used to drive the clamp 32 to move radially along the lower flange 21.

[0043] It should be noted that the hydraulic device 31 is installed on the clamp 32 through the hinge block 33. The two semi-circular clamps 32 are arranged around the lower flange 21 of the special drilling spool 2. The clamp 32 moves radially along the lower flange 21 under the drive of the hydraulic device 31. When it is necessary to install the special drilling spool 2, the hydraulic device 31 is started to drive the clamp 32 to move radially outward along the lower flange 21, so that the two clamps 32 move in opposite directions. After the clamp 32 is opened in place, the hydraulic device 31 is stopped. The extension 22 at the bottom of the lower flange 21 is inserted into the special casing head 1. After the extension 22 is inserted in place, the hydraulic device 31 is started to drive the clamp 32 to move radially inward along the lower flange 21, so that the two clamps 32 move in opposite directions until the clamp 32 clamps the lower flange 21 and the upper flange 11 in place and then the hydraulic device 31 is stopped.

[0044] In the above situation, two hydraulic devices 31 are provided at the same end of two clamps 32 and are arranged vertically, and the output ends of the two hydraulic devices 31 are connected to the same clamp 32. With such an arrangement, the clamp 32 can be moved as a whole.

[0045] Furthermore, a guiding structure 4 is provided at the other end of the two clamps 32. The guiding structure 4 includes a slide rail and a slider movably arranged along the slide rail. There are two sliders, and the two sliders are connected to the corresponding clamps 32. Limit structures are provided at both ends of the slide rail to limit the sliders within the slide rail.

[0046] It should be noted that the hydraulic device 31 is started to move the first clamp 32 connected to the output end of the hydraulic device 31, driving the other end of the first clamp 32 to move synchronously along the slide rail. When the first clamp 32 moves to the limit structure at the end of the slide rail, it stops moving. At this time, the hydraulic device 31 drives the second clamp 32 to move along the slide rail. The moving direction of the second clamp 32 is opposite to that of the first clamp 32. When the second clamp 32 moves to the other limit structure, it stops, completing the opening of the clamp 32 and preparing for the next step of installing or removing the special drilling spool 2.

[0047] Please refer to Figure 4 and Figure 5 As shown in, the two hydraulic devices 31 are symmetrically arranged at both ends of the clamp 32, and the output ends of the two hydraulic devices 31 are connected to the same clamp 32. A guiding column 5 connected to the lower flange 21 is provided on the clamp 32. The guiding column 5 extends radially along the lower flange 21. The clamp 32 is movably arranged along the guiding column 5, and a limit stop 6 is provided at the end of the guiding column 5.

[0048] It can be understood that the hydraulic device 31 is started to move the first clamp 32 connected to the output end of the hydraulic device 31 along the first guiding column 5. When the first clamp 32 moves to the position of the limit stop 6, it stops moving. At this time, the hydraulic device 31 drives the second clamp 32 to move along the second guiding column 5. The moving direction of the second clamp 32 is opposite to that of the first clamp 32. When the second clamp 32 moves to the position of the other limit stop 6, it stops moving, completing the opening of the clamp 32 and preparing for the next step of installing or removing the special drilling spool 2.

[0049] Based on the above embodiments, a safety bolt is provided on the upper end surface of one of the clamps 32, and a corresponding safety nut is provided on the upper end surface of the other clamp 32. The safety bolt is movably arranged in the safety nut, and the safety bolt is locked with the safety nut through a locking nut to fix the positions of the two clamps 32.

[0050] It should be noted that after the extension part 22 of the special drilling four-way 2 is inserted into the special casing head 1 in place, the hydraulic device 31 is started to drive the clamp 32 to move in the direction close to the special casing head 1. At the same time, the safety bolt moves along the safety nut until the clamp 32 is completely clamped on the flange 11 and the lower flange 21. At this time, it is locked through the lock nut to fix the positions of the two clamps 32 to prevent the clamp 32 from shifting during use.

[0051] The special drilling four-way 2 is bolted to the blowout preventer above it and sealed with a steel ring. When installing the blowout preventer, the hydraulic clamp device 3 is opened, and the extension part 22 at the lower part of the special drilling four-way 2 is placed inside the special casing head 1. After it is placed in place, the hydraulic clamp device 3 is closed, and the safety bolt on the clamp 32 is tightened to complete the installation. Then normal drilling work can be carried out.

[0052] In the above embodiment, the longitudinal cross-sectional shape of the clamp 32 is C-shaped, and the inner wall of the clamp 32 is provided with a stepped portion 321 for limiting the lower flange 21 and the upper flange 11.

[0053] It can be understood that in order to enable the clamp 32 to accurately clamp and limit the upper flange 11 and the lower flange 21, a stepped portion 321 is provided on the inner ring surface of the clamp 32 to limit the installation and positioning of the upper flange 11 and the lower flange 21.

[0054] As a preferred implementation manner, the hydraulic devices 31 are all connected to the power source through oil circuits. A hydraulic distributor is provided on the oil circuit, and a reversing valve is provided on the power source.

[0055] It should be noted that the power source provides power for the hydraulic device 31, the hydraulic distributor is used to control the consistent oil supply to multiple hydraulic devices 31 so that the multiple hydraulic devices 31 can operate synchronously, and the reversing valve is used to control the flow direction of the oil in the oil circuit to realize the telescopic switching of the hydraulic device 31.

[0056] In the above situation, the hydraulic device 31 includes a hydraulic cylinder and a hydraulic rod movably arranged in the hydraulic cylinder. The hydraulic cylinder is connected to the power source through an oil circuit.

[0057] It can be understood that the power source provides power for the hydraulic cylinder to drive the hydraulic rod to telescopically move along the hydraulic cylinder, so as to drive the clamp 32 to reciprocally move in the radial direction of the special drilling four-way 2 to realize the clamping and loosening of the clamp 32 on the upper flange 11 and the lower flange 21.

[0058] Please refer to Figure 2 、 Figure 3 and Figure 6 , an annular groove 221 is provided on the outer wall of the extension part 22, and a seal 7 is provided in the annular groove 221.

[0059] It should be noted that a seal 7 is provided on the outer wall of the extension part 22 to achieve the seal between the special drilling spool 2 and the special casing head 1. The special casing head 1 can provide a fastening connection and sealing function for the special drilling spool 2, and all the functions of the ordinary casing head are still retained in the special casing head 1 of this device.

[0060] In summary, for the hydraulic clamp type quick connection device provided by the present utility model, the blowout preventer is pre-installed on the special drilling spool 2 through the reducing flange 8. The special drilling spool 2 and the reducing flange 8, and the reducing flange 8 and the blowout preventer above it are all connected by bolts and sealed with steel rings. Then, the special drilling spool 2 with the installed blowout preventer is transported to the construction site. When installing the special drilling spool 2 and the blowout preventer thereon, first start the hydraulic device 31 to extend the hydraulic rod to drive the clamp 32 to open. Place the extension part 22 of the special drilling spool 2 with the installed blowout preventer into the special casing head 1. After placing it in place, start the hydraulic device 31 to contract the hydraulic rod to drive the clamp 32 to close. When the step part 321 of the clamp 32 is completely clamped with the upper flange 11 and the lower flange 21, the special drilling spool 2 with the installed blowout preventer is tightly combined with the special casing head 1 to form a seal. Tighten the safety bolt and locking nut on the clamp 32 to complete the installation of the special drilling spool 2 with the installed blowout preventer. The entire installation process is simple, fast, easy to install and disassemble, has high connection strength, good sealing performance, simple operation, and saves time and effort.

[0061] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0062] The above has introduced in detail a hydraulic clamp type quick connection device provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A hydraulic clamp type quick connection device, characterized in that: include: A special casing head (1) and a special drilling spool (2), wherein the special casing head (1) has an upper flange (11), and the special drilling spool (2) has a lower flange (21) and an extension portion (22) arranged at the bottom of the lower flange (21), wherein the extension portion (22) is arranged in the special drilling spool (2) in a pluggable manner, and a hydraulic clamp device (3) is provided on the lower flange (21), wherein the hydraulic clamp device (3) is arranged to move radially along the lower flange (21), and the hydraulic clamp device (3) is used to clamp the lower flange (21) and the upper flange (11).

2. The hydraulic clamp type quick connection device according to claim 1, characterized in that: The hydraulic clamp device (3) comprises two hydraulic devices (31) and two semicircular clamps (32), the clamps (32) being provided with hinge blocks (33) for hingedly connecting the hydraulic devices (31), and the hydraulic devices (31) being used to drive the clamps (32) to move radially along the lower flange (21).

3. The hydraulic clamp type quick connection device according to claim 2, characterized in that: The two hydraulic devices (31) are arranged at the same end of the two clamps (32) and are arranged up and down, and the output ends of the two hydraulic devices (31) are connected to the same clamp (32).

4. The hydraulic clamp type quick connection device according to claim 3, characterized in that: A guide structure (4) is provided at the other end of the two clamps (32), the guide structure (4) comprising a slide rail and a slider movably arranged along the slide rail, two sliders are provided, the two sliders are connected to the corresponding clamps (32), and limiting structures are provided at both ends of the slide rail to limit the slider within the slide rail.

5. The hydraulic clamp type quick connection device according to claim 2, characterized in that: The two hydraulic devices (31) are symmetrically arranged at both ends of the clamp (32), and the output ends of the two hydraulic devices (31) are connected to the same clamp (32). The clamp (32) is provided with a guide column (5) connected to the lower flange (21), and the guide column (5) extends radially along the lower flange (21). The clamp (32) is movably arranged along the guide column (5), and a limit stopper (6) is provided at the end of the guide column (5).

6. The hydraulic clamp type quick connection device according to any one of claims 2 to 5, characterized in that: A safety bolt is provided on the upper end surface of one of the clamps (32), and a corresponding safety nut is provided on the upper end surface of the other clamp (32). The safety bolt is movably arranged on the safety nut, and the safety bolt is locked with the safety nut via a locking nut to fix the positions of the two clamps (32).

7. The hydraulic clamp type quick connection device according to claim 6, characterized in that: The longitudinal cross-section of the clamp (32) is C-shaped, and the inner wall of the clamp (32) is provided with a step portion (321) for limiting the position of the lower flange (21) and the upper flange (11).

8. The hydraulic clamp type quick connection device according to any one of claims 2 to 5, characterized in that: The hydraulic devices (31) are connected to a power source via an oil circuit, a hydraulic distributor is provided on the oil circuit, and a reversing valve is provided on the power source.

9. The hydraulic clamp type quick connection device according to claim 8, characterized in that: The hydraulic device (31) comprises a hydraulic cylinder and a hydraulic rod movably arranged on the hydraulic cylinder, and the hydraulic cylinder is connected to the power source through the oil circuit.

10. The hydraulic clamp type quick connection device according to claim 1, characterized in that: An annular groove (221) is provided on the outer wall of the extension portion (22), and a sealing member (7) is provided in the annular groove (221).

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