Rapidly-cleaned rotary blowout preventer clamp

Abstract

The utility model provides a quick-cleaning rotary blowout preventer hoop, and belongs to the technical field of petroleum and natural gas collection. Comprising a blowout preventer shell and a hydraulic hoop, the hydraulic hoop comprises a pair of hoop petals which are symmetrically arranged and a hydraulic cylinder used for driving the two hoop petals to move, and a plurality of first spray heads facing the inner sides of the hoop petals are fixedly arranged above the hoop petals; a plurality of second spray heads used for cleaning the inner side walls of the hoop petals are movably arranged below the hoop petals, every time when the two hoop petals are relatively opened to be away from each other, the first spray heads and the second spray heads can wash the inner walls of the hoop petals and the outer wall of the joint of the blowout preventer shell and the rotating assembly, and when the two hoop petals are relatively combined to be close to each other, the first spray heads and the second spray heads can wash the inner walls of the hoop petals. The hydraulic clamp cleaning device has the advantages that the working face of the hydraulic clamp is automatically cleaned, and the inner side of the hydraulic clamp is kept clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to the petroleum and natural gas collection technical field especially relates to a quick clean rotary blowout preventer clamp. BACKGROUND

[0002] The rotary blowout preventer is a dynamic sealing device used for controlling blowout in the petroleum and natural gas drilling operation, and is installed above or inside the wellhead blowout preventer group (BOP Stack). When the drill string (drill pipe) rotates or moves up and down, the rotary blowout preventer can continuously seal the annular space between the drill pipe and the wellhead, preventing high-pressure fluid (such as natural gas, crude oil, and drilling fluid) from accidentally spewing out, and ensuring the safety of drilling.

[0003] REFERENCE Figure 1 The rotary blowout preventer is composed of a blowout preventer housing 11 and a hydraulic clamp 2. The rotary assembly 12 is connected inside the blowout preventer housing 11. The hydraulic clamp 2 clamps the flange at the connection between the blowout preventer housing 11 and the rotary assembly 12, fixing the two. During long-term use of the rotary blowout preventer, mud can easily enter the hydraulic clamp 2 that connects the rotary assembly 12, the overflow pipe, and the pressure test plug. After a period of sedimentation, stubborn dirt can form on the working surface of the hydraulic clamp 2, causing the hydraulic clamp 2 to not close tightly or even not to open. At this time, the hydraulic cylinder pin and the positioning pin need to be removed, and the hydraulic clamp 2 needs to be opened to clean the stubborn dirt inside. After cleaning, it can be used again.

[0004] However, the hydraulic cylinder pin and the positioning pin are very difficult to remove after a long time, and it is very difficult to open them. It may even be necessary to cut the pin to remove it. It is very dangerous to use fire during oil and gas layer drilling, so a clamp that can be easily cleaned, shortening the drilling cycle and saving costs is needed. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a quick clean rotary blowout preventer clamp.

[0006] In order to achieve the above invention purpose, the utility model adopts the following technical scheme:

[0007] A quick clean rotary blowout preventer clamp is provided, which includes a blowout preventer housing and a hydraulic clamp arranged at one end of the blowout preventer housing for connecting with a rotary assembly. The hydraulic clamp includes a pair of clamp petals arranged symmetrically. A connecting shaft is fixedly arranged outside one end of the blowout preventer housing. One end of each of the two clamp petals is rotationally connected to the connecting shaft. A hydraulic cylinder is connected to the end of each of the two clamp petals away from the connecting shaft. The cylinder body of the hydraulic cylinder is hinged to one of the clamp petals, and the piston rod is hinged to the other clamp petal.

[0008] The cleaning assembly comprises a cleaning pipe fixedly arranged on the clamp petal, a first spray head arranged above the clamp petal, a water inlet end of the first spray head connected with the cleaning pipe through a first pipeline, and a water outlet end of the first spray head directed to the inner side of the clamp petal.

[0009] Further, the second pipeline is a hose, and a limiting seat is fixedly arranged below the clamp petal, and the second spray head is arranged on the limiting seat in a circumferential direction of the connecting shaft as the center.

[0010] The elastic member is a spring, the spring is sleeved on the outer wall of the second spray head away from the blowout preventer shell on the limiting seat, one end of the spring is connected with the second spray head, and the other end of the spring is connected with the limiting seat.

[0011] Further, the end of the second spray head close to the blowout preventer shell is ball-hinged and arranged with a ball for rolling contact with the outer wall of the blowout preventer shell.

[0012] Further, the first spray head and the second spray head are both fan-shaped nozzles.

[0013] Further, the third pipeline is a hose, and the two ends of the two third pipelines away from the clamp petal are connected with one end of a fourth pipeline, and the fourth pipeline is connected with the cleaning medium source.

[0014] Further, the fourth pipeline is connected with a water pipe and an air pipe, the water pipe is connected with a high-pressure water source, the air pipe is connected with a high-pressure gas source, and the fourth pipeline is provided with an electromagnetic valve for limiting the fourth pipeline to be connected with the water pipe, connected with the air pipe or closed.

[0015] The beneficial effects of the utility model are as follows: when the two clamp petals are opened by being driven to rotate oppositely by the hydraulic cylinder each time, the second spray head is pushed to the inner side of the clamp petal under the action force of the elastic member, the cleaning medium source is started, the joint between the blowout preventer shell and the rotating assembly on the inner side of the clamp petal is flushed through the first spray head, and the inner wall of the clamp petal is flushed through the second spray head, so that the stubborn dirt formed by the accumulated impurities on the inner wall of the clamp petal and the joint between the blowout preventer shell and the rotating assembly can be effectively avoided, the inner side of the hydraulic clamp is kept clean, and the drilling period is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the existing clamp installation state of the rotary blowout preventer.

[0017] Figure 2 It is a whole structural schematic view of the rotary blowout preventer clamp of the embodiment of the application.

[0018] Figure 3 Another perspective view of the structure of the rotating blowout preventer clamp of the embodiment of the present application.

[0019] Wherein, 11, blowout preventer shell; 12, rotating assembly; 2, hydraulic clamp; 21, clamp lobe; 22, connecting shaft; 23, hydraulic cylinder; 3, cleaning pipe; 31, third pipeline; 4, first nozzle; 41, first pipeline; 5, second nozzle; 51, second pipeline; 52, spring; 53, ball; 6, limit seat; 7, fourth pipeline; 71, water pipe; 72, gas pipe; 73, electromagnetic valve. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0021] The embodiment of the present application discloses a kind of quick cleaning rotating blowout preventer clamp, referring to Figure 2 And Figure 3 Including blowout preventer shell 11 and hydraulic clamp 2, hydraulic clamp 2 is arranged at one end of blowout preventer shell 11 for being fixed with blowout preventer shell 11 and rotating assembly 12 tightly. Hydraulic clamp 2 includes a pair of symmetrically arranged clamp lobes 21, connecting shaft 22 is fixed outside one end of blowout preventer shell 11, connecting shaft 22 is parallel to the axis of rotating assembly 12, the connecting arm is integrally connected at one end of two clamp lobes 21, connecting arm is rotatably connected on connecting shaft 22, the end of two clamp lobes 21 away from connecting shaft 22 is connected with hydraulic cylinder 23, the cylinder body of hydraulic cylinder 23 is hinged with one clamp lobe 21, and the piston rod is hinged with another clamp lobe 21. By the piston rod of hydraulic cylinder 23 telescoping, the movable end of two clamp lobes 21 can be pushed to relatively away or close, so that hydraulic clamp 2 is relaxed or tightly connected with blowout preventer shell 11 and rotating assembly 12.

[0022] The hydraulic clamp 2 is also provided with a cleaning assembly. Specifically, the cleaning assembly comprises a cleaning pipe 3, the two clamp petals 21 are each fixedly provided with the cleaning pipe 3, a first spray head 4 is arranged above the clamp petal 21, the water inlet end of the first spray head 4 is connected with the cleaning pipe 3 through a first pipeline 41, the water outlet end of the first spray head 4 extends towards the inner side of the clamp petal 21, and the first spray head 4 is arranged in the circumferential direction of the clamp petal 21 in which the first spray head 4 is located, with the inner side wall axis of the clamp petal 21 as the center. A second spray head 5 is arranged below the clamp petal 21, the water inlet end of the second spray head 5 is connected with the cleaning pipe 3 through a second pipeline 51, and the water outlet end extends towards the inner side of the clamp petal 21, the second spray head 5 is movably arranged below the clamp petal 21, and an elastic member is arranged on the clamp petal 21, which is used to drive the second spray head 5 to move and extend to the inner side of the clamp petal 21, so that the second spray head 5 faces the inner side wall of the clamp petal 21. The cleaning pipe 3 is connected with a cleaning medium source through a third pipeline 31, and the cleaning medium source can be a high-pressure water source or a high-pressure air source. When the two clamp petals 21 are opened by being oppositely rotated, the high-pressure cleaning water or high-pressure air is introduced into the cleaning pipe 3, so that the inner wall of the clamp petal 21 and the outer wall of the joint between the blowout preventer housing 11 and the rotating assembly 12 are washed or blown, the dirt on the surfaces is removed, and the mud is prevented from being deposited in the hydraulic clamp 2 to form stubborn dirt after long-term use.

[0023] Specifically, the second pipeline 51 is a flexible pipe, such as a metal flange flexible pipe, which can withstand the pressure of the high-pressure medium inside and provide a movement allowance for the movement of the second spray head 5. The second spray head 5 corresponds to the first spray head 4 one by one, so as to ensure that the surfaces of the clamp petal 21, the blowout preventer housing 11 and the rotating assembly 12 can be covered and cleaned. A limiting seat 6 is fixedly arranged below the clamp petal 21, the limiting seat 6 is provided with a movable hole, the second spray head 5 comprises a pipeline segment and a spray head segment, the pipeline segment is slidably arranged in the movable hole in the circumferential direction of the connecting shaft 22, and in other embodiments, the pipeline segment can also be slidably arranged in the movable hole in the radial direction of the inner wall of the clamp petal 21 in which the pipeline segment is arranged. One end of the pipeline segment is connected with the second pipeline 51 after penetrating through the movable hole, and the other end is connected with the spray head segment, and the spray head segment is inclined towards the inner side wall of the clamp petal 21. The elastic member can be a spring 52, the spring 52 is sleeved on the pipeline segment of the second spray head 5 away from the blowout preventer housing 11 on the limiting seat 6, one end of the spring 52 is fixedly connected with the second spray head 5, and the other end is fixedly connected with the limiting seat 6. When the spring 52 is completely relaxed, the spray head segment of the second spray head 5 extends into the inner side of the clamp petal 21 from below the clamp petal 21 and faces the inner side wall of the clamp petal 21. When the two clamp petals 21 are relatively close to each other and rotate to tightly hold the blowout preventer housing 11 and the rotating assembly 12, the second spray head 5 contacts the outer wall of the blowout preventer housing 11 and is pushed below the clamp petal 21, so that the second spray head 5 does not affect the normal movement of the clamp petal 21.

[0024] In order to avoid the second nozzle 5 and the blowout preventer shell 11 rigid friction caused by the two wear or jam the impact of the hydraulic clamp 2 normal work, in the embodiment of the application, the second nozzle 5 is close to the end of the blowout preventer shell 11 ball hinge is provided with the ball 53, when the clamp 21 is combined, the ball 53 and the outer wall of the blowout preventer shell 11 rolling contact, the second nozzle 5 can smoothly on the outer wall of the blowout preventer shell 11 slip, the second nozzle 5 can be successfully incorporated into the below of the clamp 21.

[0025] Further, the first nozzle 4 and the second nozzle 5 can be used fan-shaped nozzle. Fan-shaped nozzle can make the cleaning medium is fan-shaped, can make each nozzle cover more extensive range, improve the cleaning effect of the clamp 21 inner wall and the blowout preventer shell 11 and the connecting wall of the rotating assembly 12.

[0026] In the embodiment of the application, the third pipeline 31 also adopts the hose, the two ends of the third pipeline 31 away from the clamp 21 are combined and connected to one end of the fourth pipeline 7, and the fourth pipeline 7 is connected with the cleaning medium source. Because the two clamps 21 are relatively movable, the third pipeline 31 adopts the hose, so that the third pipeline 31 can adapt to the movement of the clamp 21. The two third pipelines 31 are connected with the cleaning medium source through the same fourth pipeline 7, and when the cleaning medium source is started, the cleaning medium can be simultaneously introduced into the two cleaning pipes 3, so that the two clamps 21 can be cleaned at the same time, and the structure can be compactly installed.

[0027] Further, the water pipe 71 and the gas pipe 72 are also connected to the fourth pipeline 7, the water pipe 71 is connected with the high-pressure water source, the gas pipe 72 is connected with the high-pressure gas source, and the electromagnetic valve 73 is arranged on the fourth pipeline 7. The fourth pipeline 7 can be connected with the water pipe 71 or the gas pipe 72 or be cut off by the electromagnetic valve 73. Through the above arrangement, the worker can selectively introduce the high-pressure clean water or the high-pressure air into the cleaning pipe 3 to clean the inner wall of the clamp 21 and the connecting wall of the blowout preventer shell 11 and the rotating assembly 12. The worker can also choose to clean the above-mentioned parts by the high-pressure clean water first, and then clean the residual water stains and dirt by the high-pressure air, so as to improve the cleaning effect.

[0028] Those skilled in the art will appreciate that although the preferred embodiments of the present application have been described, once the basic creative concept is known, those skilled in the art can make other changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and changes.

Claims

1. A quick cleaning swivel preventer clamp comprising a preventer housing (11) and a hydraulic clamp (2) disposed at one end of the preventer housing (11) for connection with a swivel assembly (12), characterized in that: The hydraulic clamp (2) comprises a pair of clamp petals (21) arranged symmetrically, one end of the blowout preventer shell (11) is fixedly provided with a connecting shaft (22), one end of the two clamp petals (21) is rotatably connected to the connecting shaft (22), and the other end of the two clamp petals (21) is connected with a hydraulic cylinder (23), the cylinder body of the hydraulic cylinder (23) is hinged to one clamp petal (21), and the piston rod is hinged to the other clamp petal (21); It also comprises a cleaning assembly, the cleaning assembly comprises a cleaning pipe (3), the cleaning pipe (3) is fixedly arranged on the clamp petal (21), a first nozzle (4) is arranged above the clamp petal (21), the water inlet end of the first nozzle (4) is connected with the cleaning pipe (3) through a first pipeline (41), the water outlet end of the first nozzle (4) faces the inner side of the clamp petal (21), a second nozzle (5) is movably arranged below the clamp petal (21), the water inlet end of the second nozzle (5) is connected with the cleaning pipe (3) through a second pipeline (51), and the water outlet end extends to the inner side of the clamp petal (21); an elastic member is arranged on the clamp petal (21) and used for driving the second nozzle (5) to move to the inner side of the clamp petal (21) so that the water outlet end of the second nozzle (5) faces the inner wall of the clamp petal (21); and the cleaning pipe (3) is externally connected with a cleaning medium source through a third pipeline (31).

2. A quick cleaning rotating blowout preventer collar according to claim 1, wherein, The second pipeline (51) is a hose, a limiting seat (6) is fixedly arranged below the clamp petal (21), and the second nozzle (5) is slidably arranged on the limiting seat (6) along the circumferential direction of the connecting shaft (22); The elastic member is a spring (52), the spring (52) is sleeved on the outer wall of the second nozzle (5) on the side, away from the blowout preventer shell (11), of the limiting seat (6), one end of the spring (52) is connected with the second nozzle (5), and the other end is connected with the limiting seat (6).

3. A quick cleaning rotating blowout preventer collar according to claim 1, wherein, The end of the second nozzle (5) close to the blowout preventer shell (11) is ball-hingedly provided with a ball (53) used for rolling contact with the outer wall of the blowout preventer shell (11).

4. A quick cleaning rotating blowout preventer collar according to claim 1, wherein, The first nozzle (4) and the second nozzle (5) are both fan-shaped nozzles.

5. A swivel clamp according to any one of claims 1 to 4, wherein, The third pipeline (31) is a hose, and the ends, away from the clamp petal (21), of the two third pipelines (31) are combinedly connected to one end of a fourth pipeline (7), and the fourth pipeline (7) is externally connected with a cleaning medium source.

6. A quick cleaning rotating blowout preventer collar according to claim 5, wherein, The fourth pipeline (7) is connected with a water pipe (71) and an air pipe (72), the water pipe (71) is externally connected with a high-pressure water source, the air pipe (72) is externally connected with a high-pressure air source, and the fourth pipeline (7) is provided with an electromagnetic valve (73) used for limiting the communication of the fourth pipeline (7) with the water pipe (71) / the air pipe (72) / closing.

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