Plugging device for oil and gas storage and transportation pipeline

Abstract

The utility model provides an oil gas storage and transportation pipeline plugging device, and relates to the technical field of oil gas storage and transportation pipeline plugging, the oil gas storage and transportation pipeline plugging device comprises a cover plate used for being installed at an end opening of a storage and transportation pipe and a sealing ring used for being installed inside the storage and transportation pipe, and one side, away from the cover plate, of the sealing ring is provided with an inner threaded pipe which is coaxially arranged with the storage and transportation pipe. A sealing ring is arranged at the closed end of the inner threaded pipe, a deformable plugging plate is arranged at the closed end of the inner threaded pipe, the deformed plugging plate can smoothly pass through the sealing ring and enter the side, away from the cover plate, of the sealing ring, then the folded plugging plate is unfolded and flattened and is attached to the end face of the sealing ring along with reverse movement of the inner threaded pipe, and plugging of the storage and transportation pipe can be achieved. The unfolded and flattened plugging plate does not make contact with the inner wall of the storage and transportation pipe when moving towards the sealing ring, movement of the plugging plate is not affected, crude oil in the storage and transportation pipe presses the plugging plate, the edge of the plugging plate is tightly attached to the end face of the sealing ring by generating pressure on one side of the plugging plate, the sealing ring is used for reversely supporting the plugging plate, and the sealing effect is conveniently guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas storage and transportation pipeline plugging technology, and in particular to an oil and gas storage and transportation pipeline plugging device. Background Technology

[0002] Oil and gas pipelines may leak during long-term operation due to corrosion, aging, or external damage. Sealing technology can quickly repair leaks without interrupting pipeline flow, preventing oil and gas leaks and avoiding environmental pollution and resource waste.

[0003] Therefore, in the existing technology of an oil and gas storage and transportation pipeline plug, with publication number CN220286787U, when the pipeline plug needs to work, the rotating rod and the bidirectional threaded rod are fixed, and then the cover plate is fixed on the pipeline body. By rotating the handle, the bidirectional threaded rod is driven to rotate, thereby driving the two connecting plates to move left and right in a linear motion, causing the two connecting plates to move in adjacent directions, thereby squeezing the rubber ring. The diameter of the rubber ring increases due to the squeezing. When the handle is released, under the elastic action of the first spring, the connecting plate moves to the left, causing the rubber ring to move to the left as well. At the same time, the rubber ring is tightly fitted with the limiting groove, thereby achieving a sealing operation inside the pipeline body.

[0004] However, when the rubber ring increases in diameter through compression, it comes into contact with and is squeezed against the inner wall of the pipe, which increases the friction between the rubber ring and the inner wall of the pipe. Therefore, when the rubber ring is pushed to the left by the elastic force of the first spring, it is easily unable to move under the pushing force of the first spring due to the resistance of the friction between the rubber ring and the pipe, thus affecting the sealing effect. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing an oil and gas storage and transportation pipeline plug.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an oil and gas storage and transportation pipeline plug, comprising a cover plate for installation at the port of the storage and transportation pipeline and a sealing ring for installation inside the storage and transportation pipeline. An internally threaded tube, coaxially arranged with the storage and transportation pipeline, is provided on the side of the sealing ring away from the cover plate. A plugging plate for fitting the end face of the sealing ring is fixedly installed on the end of the internally threaded tube away from the cover plate. The plugging plate includes a movable plate fixed to one end of the internally threaded tube, two first sealing plates respectively hinged to the left and right sides of the movable plate, and second sealing plates respectively hinged to the upper and lower sides of the movable plate. The two first sealing plates and the two second sealing plates are symmetrically distributed, and the side of the first and second sealing plates away from the movable plate is an arc edge concentric with the sealing ring. A first ring for driving the two first sealing plates to swing and a second ring for driving the two second sealing plates to swing are respectively sleeved at both ends of the surface of the internally threaded tube.

[0007] Preferably, the first sealing plate and the second sealing plate swing toward the sides of the moving plate, respectively.

[0008] Preferably, a first connecting arm is fixed on both the left and right sides of the outer side of the first ring, and the endpoints of the two first connecting arms are respectively inserted into the back of the two first sealing plates. A second connecting arm is fixed on both the upper and lower sides of the outer side of the second ring, and the endpoints of the two second connecting arms are respectively inserted into the front of the two second sealing plates.

[0009] Preferably, slide rails are fixedly installed on the back of the first sealing plate and the front of the second sealing plate, and a plurality of slide rails are located on the same side of the sealing ring, and the endpoints of the first connecting arm and the second connecting arm are slidably inserted into the slide rails at the corresponding positions.

[0010] Preferably, the end face of the cover plate is rotatably connected to three rotating handles. Of the three rotating handles, one rotating handle is located at the center of the cover plate and is coaxially arranged with the storage and transportation pipe, while the other two rotating handles are arranged close to the central axis of the cover plate.

[0011] Preferably, one end of the rotating handle located at the center of the cover plate is fixedly installed with a movable screw that is threaded to an internally threaded pipe.

[0012] Preferably, a rectangular rod is fixedly installed at one end of each of the two rotating handles near the center of the cover plate, and a push screw that is rotatably connected to the moving plate is sleeved on the surface of each of the two rectangular rods. The two push screws are arranged in parallel and are threaded through the end faces of the first ring and the second ring, respectively.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting an internally threaded pipe and a deformable sealing plate at the closed end of the internally threaded pipe, the deformed sealing plate can smoothly pass through the sealing ring and enter the side of the sealing ring away from the cover plate. Then, the folded sealing plate is unfolded and flattened, and it fits against the end face of the sealing ring as the internally threaded pipe moves in the opposite direction, thus achieving the sealing of the storage and transportation pipe. When the unfolded and flattened sealing plate moves towards the sealing ring, it does not contact the inner wall of the storage and transportation pipe and will not affect the movement of the sealing plate. The crude oil in the storage and transportation pipe presses the sealing plate, and by generating pressure on one side of the sealing plate, the edge of the sealing plate is tightly attached to the end face of the sealing ring. That is, the sealing ring provides reverse support for the sealing plate, which helps to ensure the sealing effect.

[0015] 2. In this utility model, the first sealing plate and the second sealing plate swing toward the two sides of the moving plate respectively. The opposite hinge can ensure that the first sealing plate and the second sealing plate can rotate and swing smoothly. By rotating and swinging the first sealing plate and the second sealing plate, the plane range occupied by the sealing plate can be reduced, thereby ensuring that the sealing plate can pass smoothly through the sealing ring. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an oil and gas storage and transportation pipeline plugging device;

[0017] Figure 2 This utility model proposes a plugging device for oil and gas storage and transportation pipelines. Figure 1 A schematic diagram of the cross-sectional structure;

[0018] Figure 3 This utility model proposes a plugging device for oil and gas storage and transportation pipelines. Figure 2 A schematic diagram of the side view structure;

[0019] Figure 4 This utility model proposes a plugging device for oil and gas storage and transportation pipelines. Figure 3 A schematic diagram of the rear section structure.

[0020] Legend: 1. Rectangular rod; 2. Cover plate; 3. Sealing ring; 4. Moving plate; 5. First sealing plate; 6. Second sealing plate; 7. Moving screw; 8. Second ring; 9. Second connecting arm; 10. Slide rail; 11. First connecting arm; 12. Internally threaded pipe; 13. Push screw; 14. First ring; 15. Rotating handle. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1-4As shown, an oil and gas storage and transportation pipeline plugging device includes a cover plate 2 for installation at the port of the storage and transportation pipeline and a sealing ring 3 for installation inside the storage and transportation pipeline. An internally threaded pipe 12, coaxially arranged with the storage and transportation pipeline, is provided on the side of the sealing ring 3 away from the cover plate 2. A plugging plate for fitting against the end face of the sealing ring 3 is fixedly installed on the end of the internally threaded pipe 12 away from the cover plate 2. The plugging plate is positioned on the side of the sealing ring 3 away from the cover plate 2 to ensure that the crude oil inside the storage and transportation pipeline compresses the plugging plate. By generating pressure on one side of the plugging plate, the edge of the plugging plate is tightly fitted against the end face of the sealing ring 3, i.e., the sealing ring 3 provides reverse support for the plugging plate. The plugging plate includes a movable plate 4 fixed to one end of the internally threaded pipe 12 and two first... The sealing plate 5 and the second sealing plate 6 are respectively hinged to the upper and lower sides of the moving plate 4. The two first sealing plates 5 and the two second sealing plates 6 are symmetrically distributed, and the side of the first sealing plate 5 and the second sealing plate 6 away from the moving plate 4 is set as an arc edge with the same center as the sealing ring 3. The first sealing plate 5 and the second sealing plate 6 swing towards the two sides of the moving plate 4 respectively. The opposite hinge can ensure that the first sealing plate 5 and the second sealing plate 6 can rotate and swing smoothly. By rotating and swinging the first sealing plate 5 and the second sealing plate 6, the plane range occupied by the sealing plate can be reduced, thereby ensuring that the sealing plate can pass smoothly through the sealing ring 3. In addition, in this solution, the contact edge between the first sealing plate 5 and the second sealing plate 6 and the moving plate 4 is sealed by setting a sealing strip.

[0024] The two ends of the internally threaded tube 12 are respectively fitted with a first ring 14 for driving the two first sealing plates 5 to swing and a second ring 8 for driving the two second sealing plates 6 to swing.

[0025] To ensure the smooth swinging of the first sealing plate 5 and the second sealing plate 6 and the smooth passage of the moving plate 4 through the sealing ring 3: First connecting arms 11 are fixed to both the left and right sides of the outer edge of the first ring 14. The endpoints of the two first connecting arms 11 are respectively inserted into the back of the two first sealing plates 5, combined with... Figure 4 When the first ring 14 slides towards the sealing ring 3, the first connecting arm 11 pushes the first sealing plate 5 to rotate backward and open. The second ring 8 has a second connecting arm 9 fixed on both the upper and lower sides of its outer side. The ends of the two second connecting arms 9 are respectively inserted into the front of the two second sealing plates 6. When the second ring 8 moves away from the sealing ring 3, the second connecting arms 9 pull the second sealing plates 6 to rotate forward and open. The back of the first sealing plate 5 and the front of the second sealing plate 6 are both fixedly installed with slide rails 10. Several slide rails 10 are located on the same side of the sealing ring 3. The ends of the first connecting arm 11 and the second connecting arm 9 are slidably inserted into the corresponding slide rails 10. The slide rails 10 are used to connect one end of the first connecting arm 11 or the second connecting arm 9, and the ends of the first connecting arm 11 or the second connecting arm 9 slide in the corresponding slide rails 10, so as to ensure that the first connecting arm 11 and the second connecting arm 9 can smoothly achieve their corresponding functions and roles.

[0026] To ensure the smooth movement of the internally threaded tube 12, the first ring 14, and the second ring 8, three rotating handles 15 are rotatably connected through the end face of the cover plate 2. One of the three rotating handles 15 is located at the center of the cover plate 2 and is coaxially arranged with the storage and transportation tube. The other two rotating handles 15 are located close to the central axis of the cover plate 2. One end of the rotating handle 15 located at the center of the cover plate 2 is fixedly installed with a moving screw 7 that is threadedly connected to the internally threaded tube 12. In use, the moving screw 7 is rotated by rotating the central position of the rotating handle 15. Utilizing the threaded connection between the moving screw 7 and the internally threaded tube 12 and the characteristic that the internally threaded tube 12 cannot rotate, the internally threaded tube 12 can move relative to the sealing ring 3 as the moving screw 7 rotates. This facilitates ensuring that the flattened and unfolded sealing plate fits against the end face of the sealing ring 3; or the flattened and unfolded sealing plate moves away from the end face of the sealing ring 3, ensuring that the second sealing plate 6 rotates forward smoothly. Two rectangular rods 1 are fixedly installed at one end of the two rotating handles 15 near the center of the cover plate 2. The surfaces of the two rectangular rods 1 are fitted with push screws 13 that are rotatably connected to the moving plate 4. The two push screws 13 are arranged in parallel and threaded through the end faces of the first ring 14 and the second ring 8, respectively. The internal threaded tube 12 ensures that the first ring 14 and the second ring 8 will not rotate with the rotation of the push screws 13. Therefore, the first ring 14 and the second ring 8 can slide smoothly on the surface of the internal threaded tube 12 as the corresponding push screws 13 rotate. The internal threaded tube 12 cannot rotate because it is connected to the rectangular rods 1 and the push screws 13. Specifically, the push screws 13 are rotatably connected to the surface of the moving plate 4, while the rectangular rods 1 are connected to the cover plate 2 through the corresponding rotating handles 15. Therefore, the two push screws 13 can ensure that the moving plate 4 will not rotate, that is, the internal threaded tube 12 fixedly connected to the moving plate 4 will not rotate. Conversely, the insertion of the rectangular rod 1 and the push screw 13 can also ensure that when the moving plate 4 moves with the internal threaded tube 12, it drives the push screw 13 to slide relative to the rectangular rod 1. The inserted rectangular rod 1 and the push screw 13 will not affect the rotation of the corresponding connected rectangular rod 1 by rotating the rotating handle 15, thereby realizing the rotation of the push screw 13.

[0027] Working principle: During use, the cover plate 2 is installed at the end of the storage and transportation pipe. At this time, the sealing plate is in a folded state and enters the storage and transportation pipe as the cover plate 2 is installed. The rotating handle 15 at the center of rotation causes the moving screw 7 to rotate. The threaded connection between the moving screw 7 and the internal threaded pipe 12 causes the internal threaded pipe 12 to drive the sealing plate to the side of the sealing ring 3 away from the cover plate 2. Then, the two rotating handles 15 near the center position are rotated in sequence to make the rectangular rod 1 drive the pushing screw 13 to rotate. The rotation of the two pushing screws 13 causes the first ring 14 and the second ring 8 to move in sequence. The first ring 14 and the second ring 8 move away from each other, so that the first sealing plate 5 and the second sealing plate 6 can rotate, unfold and flatten. Then, the moving screw 7 is rotated in the opposite direction to make the moving plate 4 drive the flattened sealing plate to move to the end of the sealing ring 3 facing away from the cover plate 2.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A shutoff device for oil and gas storage and transportation pipes, comprising a cover plate (2) for mounting on the port of the storage and transportation pipe and a sealing ring (3) for mounting inside the storage and transportation pipe, characterized in that: The sealing ring (3) is provided with an inner threaded pipe (12) coaxially arranged with the storage pipe on the side away from the cover plate (2), and a blocking plate for abutting the end face of the sealing ring (3) is fixedly installed at the end of the inner threaded pipe (12) away from the cover plate (2). The blocking plate comprises a moving plate (4) fixed at one end of the inner threaded pipe (12), two first sealing plates (5) hingedly connected on the left and right sides of the moving plate (4), and two second sealing plates (6) hingedly connected on the upper and lower sides of the moving plate (4). The two first sealing plates (5) and the two second sealing plates (6) are symmetrically distributed, and the side away from the moving plate (4) of the first sealing plate (5) and the second sealing plate (6) is provided with an arc edge with the same center as the sealing ring (3). First circular rings (14) for driving the two first sealing plates (5) to swing and second circular rings (8) for driving the two second sealing plates (6) to swing are respectively sleeved on the surfaces of the two ends of the inner threaded pipe (12).

2. The hydrocarbon pipeline occluder of claim 1, wherein: The first sealing plate (5) and the second sealing plate (6) swing towards the two sides of the moving plate (4) respectively.

3. The hydrocarbon pipeline occluder of claim 1, wherein: First connecting arms (11) are fixed on the left and right sides of the outer side of the first circular ring (14), and the end points of the two first connecting arms (11) are respectively inserted into the back surface of the two first sealing plates (5). Second connecting arms (9) are fixed on the upper and lower sides of the outer side of the second circular ring (8), and the end points of the two second connecting arms (9) are respectively inserted into the front surface of the two second sealing plates (6).

4. The hydrocarbon pipeline occluder of claim 3, wherein: The back surface of the first sealing plate (5) and the front surface of the second sealing plate (6) are fixedly installed with slide rails (10), and a plurality of slide rails (10) are located on the same side of the sealing ring (3). The end points of the first connecting arms (11) and the second connecting arms (9) are slidably inserted into the corresponding slide rails (10).

5. The hydrocarbon pipeline occluder of claim 1, wherein: Three rotating handles (15) are rotatably connected to the end face of the cover plate (2), one of the three rotating handles (15) is located at the center of the cover plate (2) and coaxially arranged with the storage pipe, and the other two rotating handles (15) are arranged close to the central axis of the cover plate (2).

6. The tubular occluder of claim 5, wherein: The rotating handle (15) located at the center of the cover plate (2) is fixedly installed with a moving screw (7) threadedly connected with the inner threaded pipe (12) at one end.

7. The tubular occluder of claim 5, wherein: The two rotating handles (15) close to the center of the cover plate (2) are each fixedly installed with a rectangular rod (1), and the surfaces of the two rectangular rods (1) are each sleeved with a pushing screw (13) rotatably connected with the moving plate (4). The two pushing screws (13) are arranged in parallel and threadedly penetrate the end faces of the first circular ring (14) and the second circular ring (8) respectively.

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