A pipeline leak plugging device

Abstract

The present application provides a pipeline leak plugging device, including a leak plugging main body, which successively includes: a drill head disposed at one end thereof for processing holes in the pipeline wall, a mating part closely arranged with the drill head, and a propulsion part closely arranged with the mating part. A propulsion ring is fitted on the propulsion part; an expansion ring, which is sleeved outside the mating part; pushing the propulsion ring along the axial direction of the leak plugging main body towards the direction close to the drill head, so that the mating part applies an axial reverse extrusion force to the expansion ring to cause it to deform. During operation, the expansion ring will expand, so that the expansion ring will wedge-fit the broken hole at the inner wall of the pipeline, and the sealing performance is better; in addition, the method of drilling first and then plugging the leak is adopted to plug irregular pipeline holes, and drilling and plugging are completed at one time, improving the leak plugging efficiency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of oil pipe leak prevention, and specifically discloses a pipeline leak plugging device. Background Art

[0002] Pipeline perforations may occur in oil pipelines for various reasons. The traditional leak plugging method is to carry a hardwood plug into the hole for leak plugging. This method is effective in dealing with relatively regular pipeline holes, but it is more difficult to deal with irregular cracks and holes. Another leak plugging method is called the capping method, which is effective in dealing with irregular holes. However, when dealing with the pipeline anti-corrosion layer at the site, the leak plugging effect is not good. Summary of the Invention

[0003] In view of the above defects or deficiencies in the prior art, the present application aims to provide a pipeline leak plugging device, including a leak plugging main body, which successively includes: a drill head portion provided at one end thereof for processing a hole in the pipeline wall, a mating portion adjacent to the drill head portion, and a propulsion portion adjacent to the mating portion. A propulsion ring is fitted on the propulsion portion;

[0004] An expansion ring, the expansion ring is sleeved outside the mating portion;

[0005] Push the propulsion ring along the axis direction of the leak plugging main body towards the drill head portion, so that the mating portion applies an axial reverse extrusion force to the expansion ring to cause it to deform.

[0006] According to the technical solution provided by the embodiment of the present application, the mating portion includes: a columnar portion adjacent to the propulsion portion and a frustum portion integrally connected to the columnar portion;

[0007] The inner wall of the expansion ring on the side close to the drill head portion has the same taper as the frustum portion.

[0008] According to the technical solution provided by the embodiment of the present application, a groove is provided on the inner wall of the expansion ring. When the propulsion ring moves, it squeezes the expansion ring so that the radial dimension of the expansion ring increases at the groove.

[0009] According to the technical solution provided by the embodiment of the present application, the cross-section of the groove is triangular.

[0010] According to the technical solution provided by the embodiment of the present application, the material of the expansion ring is copper.

[0011] According to the technical solution provided by the embodiment of the present application, the taper of the frustum portion is 14 degrees.

[0012] According to the technical solution provided by the embodiment of the present application, the propulsion portion is threadedly connected to the propulsion ring, and a spacer sleeve is provided between the propulsion ring and the mating portion and is placed outside the hole.

[0013] According to the technical solution provided by the embodiment of the present application, a clamping portion for installing a drilling tool is connected to the side of the propulsion portion away from the mating portion.

[0014] In summary, the present application discloses a pipeline leak plugging device, which is sequentially provided with a drilling head portion, a mating portion, and a propulsion portion on the leak plugging main body, and a propulsion ring is externally mated to the propulsion portion. During operation, the drilling head portion is used to process regular holes at the pipeline leak point, and this pipeline leak plugging device is pushed into the hole. The mating portion, the expansion ring sleeved outside it, and the drilling head portion are inside the hole. By the action of the propulsion ring, the leak plugging main body moves in the direction towards the outside of the hole, so that the mating portion squeezes the expansion ring in the direction towards the outside of the hole to cause it to deform and expand outwards. When the expansion ring is wedge-shaped and fits against the broken hole on the inner wall of the pipeline, the expansion ring is wedge-shaped and fits against the inner wall of the pipeline. In the way of wedge-shaped fitting, the fitting property is stronger and the sealing property is better. In addition, by using the method of drilling first and then plugging the leak, irregular pipeline holes can be plugged. The drilling and plugging are completed at one time, which is more convenient and fast, and improves the leak plugging efficiency. Description of the Drawings

[0015] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes, and advantages of the present application will become more obvious:

[0016] Figure 1 is a schematic diagram of an embodiment of a pipeline leak plugging device of the present application (without sleeving the expansion ring);

[0017] Figure 2 is a schematic diagram of an embodiment of a pipeline leak plugging device of the present application (sleeving the expansion ring);

[0018] Figure 3 is a schematic diagram of an embodiment of a pipeline leak plugging device of the present application;

[0019] Figure 4 is Figure 3 a sectional view of a schematic diagram of an embodiment A-A;

[0020] Figure 5 is a schematic diagram of an embodiment of a pipeline leak plugging device of the present application.

[0021] 1. Leak plugging main body; 2. Mating portion; 21. Columnar portion; 22. Frustum portion; 3. Drilling head portion; 4. Propulsion portion; 5. Expansion ring; 51. First expansion point; 52. Second expansion point; 6. Propulsion ring; 7. Spacer sleeve; 8. Clamping portion; 9. Stopping portion. Detailed Embodiments

[0022] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than limiting the invention. Additionally, it should be noted that for ease of description, only the parts related to the invention are shown in the drawings.

[0023] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0024] As mentioned in the background art, in view of the problem that it is difficult to plug irregular cracks and holes in the prior art, the present disclosure proposes a pipeline plugging device, such as Figure 1 , Figure 2 shown, which includes a plugging main body 1. The plugging main body 1 successively includes: a drill head portion 3 provided at one end thereof for processing holes in the pipeline wall, a mating portion 2 adjacent to the drill head portion 3, and a propulsion portion 4 adjacent to the mating portion 2. A propulsion ring 6 is fitted on the propulsion portion 4; an expansion ring 5, and the expansion ring 5 is sleeved outside the mating portion 2.

[0025] Specifically, the outer diameter of the mating portion 2 is not greater than that of the drill head portion 3, the outer diameter of the propulsion portion 4 is much smaller than that of the mating portion 2, and the outer diameter of the propulsion ring 6 is greater than that of the drill head portion 3. The outer diameter of the expansion ring 5 is the same as that of the drill head portion 3. Therefore, when the plugging device is pushed into the hole, the drill head portion 3, the mating portion 2, and the expansion ring 5 mated with it are inside the hole, while the propulsion ring 6 and the propulsion portion 4 mated with it are outside the hole. Optionally, the drill head portion 3 is a U-shaped chip removal groove drill bit, and the U-shaped chip removal groove is beneficial for rapid chip removal and improves the drilling performance.

[0026] Push the propulsion ring 6 along the axial direction of the plugging main body 1 towards the drill head portion 3, so that the mating portion 2 applies an axial reverse extrusion force to the expansion ring 5 to cause it to deform. By the action of the propulsion ring 6, the plugging main body 1 moves towards the outside of the hole, so that the mating portion 2 squeezes the expansion ring 5 towards the outside of the hole to cause it to deform and expand outwards. When the expansion ring 5 is wedge-shaped and fitted to the broken hole at the inner wall of the pipeline, the expansion ring 5 is wedge-shaped and fitted to the inner wall of the pipeline. The wedge-shaped fitting method has stronger fitting property and better sealing property; in addition, by using the method of drilling first and then plugging, irregular pipeline holes can be plugged. The drilling and plugging are completed at one time, which is more convenient and fast, and improves the plugging efficiency.

[0027] Such as Figure 2 and Figure 4As shown, the mating part 2 includes a columnar part 21 adjacent to the propulsion part 4 and a frustum part 22 integrally connected to the columnar part 21; the inner wall of the expansion ring 5 close to the drill bit part 3 has the same taper as the frustum part 22. Preferably, the length of the expansion ring 5 is less than that of the mating part 2. During operation, the expansion ring 5 will expand on the side close to the drill bit part 3, and a gap will be formed between the expanded expansion ring 5 and the plugging main body 1. Therefore, a frustum part 22 with a taper is provided on the side of the mating part 2 close to the drill bit part 3, and the corresponding part of the inner wall of the expansion ring 5 and the frustum part 22 has the same taper, and its inner wall gradually decreases from the drill bit part 3 to the propulsion part 4 direction. Therefore, when the propulsion ring 6 acts, the plugging main body 1 moves towards the outside of the hole, so that the mating part 2 forms a squeezing force on the expansion ring 5. When the expansion ring 5 expands at the inner wall with a taper, a first expansion point 51 of the expansion ring 5 is formed. On the one hand, it fits with the hole breakage at the inner wall of the pipeline to form a seal. On the other hand, the expansion ring 5 can also fit tightly with the mating part 2 to form a seal to prevent the liquid in the pipeline from flowing out between the expansion ring 5 and the plugging main body 1.

[0028] As Figure 4 shown, a groove is provided on the inner wall of the expansion ring 5. When the propulsion ring 6 acts, it squeezes the expansion ring 5 so that the radial dimension of the expansion ring 5 increases at the groove. When the propulsion ring 6 acts, the expansion ring 5 is squeezed, and the side close to the drill bit part 3 is expanded. When the first seal is formed between the expansion ring 5 and the pipeline, the propulsion ring 6 continues to act, and the mating part 2 continues to move towards the orifice direction, while the propulsion ring 6 is outside the hole. Therefore, the expansion ring 5 is continuously squeezed under the action of the propulsion ring 6 and the mating part 2. Since the space of the expansion ring 5 is getting smaller and smaller, the radial dimension of the expansion ring 5 increases at the groove, so that an interference fit is formed between the expansion ring 5 and the pipeline hole, and a frictional force is formed on the inner wall of the pipeline hole, achieving the seal between the expansion ring 5 and the inner wall of the pipeline hole. This groove is the second expansion point 52 of the expansion ring 5. This design can not only enhance the sealing performance of the pipeline plugging device for the broken pipeline, but also enhance the compressive resistance of the pipeline plugging device on the inner wall of the pipeline.

[0029] As Figure 4 shown, the cross-section of the groove is triangular. Since the triangular groove is more easily squeezed when the two side walls are stressed, it makes it easier for the radial dimension of the expansion ring 5 at the groove to increase, improving the expansion efficiency.

[0030] Preferably, the material of the expansion ring 5 is copper. Since copper has good ductility, it can form a good seal, and has good mechanical strength and strong compressive capacity, so the copper expansion ring 5 is selected.

[0031] Preferably, the taper of the frustum portion 22 is 14 degrees. If the taper is too large, the structural strength of the mating portion 2 will decrease, reducing the compressive capacity of the pipeline leak plugging device; if the taper is too small, when operating, the expansion ring 5 will expand too little to achieve the sealing effect. Preferably, the taper of the mating portion 2 is set to 14 degrees.

[0032] Preferably, as Figure 1 and Figure 5 shown, the pushing portion 4 is threadedly connected to the pushing ring 6, and a spacer sleeve 7 placed outside the hole is provided between the pushing ring 6 and the mating portion 2. The pushing portion 4 is provided with threads and has a pushing ring 6 threadedly connected to its outer ring. During operation, the outer diameter of the pushing portion 4 is smaller than that of the mating portion 2, the outer diameter of the pushing ring 6 is larger than that of the drill head portion 3, and the outer diameter of the expansion ring 5 is the same as that of the drill head portion 3. Therefore, during operation, the pushing ring 6 abuts against the hole wall, and the pushing ring 6 is rotated axially towards the drill head portion 3. However, due to the obstruction of the hole, it cannot move axially. Therefore, the pushing portion 4 threadedly engaged with it undergoes an axial reverse movement, so the leak plugging main body 1 moves reversely towards the outside of the hole, thus forming an extrusion of the expansion ring 5 by the pushing ring 6 and the mating portion 2. In order to prevent damage to the hole wall caused by rotating the pushing ring 6, a spacer sleeve 7 is provided between the pushing ring 6 and the mating portion 2, and the outer diameter of the spacer sleeve 7 is also larger than the outer diameter of the hole.

[0033] As Figure 1 、 Figure 2 , a clamping portion 8 for installing a drilling tool is connected to the side of the pushing portion 4 away from the mating portion 2. The present disclosure adopts the method of drilling first and then plugging, so preferably the clamping portion 8 is provided to facilitate the installation of the drilling tool and improve the leak plugging efficiency. Optionally, a stopping portion 9 is provided between the pushing portion 4 and the clamping portion 8. The stopping portion 9 has a clamping surface for facilitating the installation of the clamping tool. Preferably, the stopping portion 9 is hexagonal prism-shaped, and a wrench can be used to act on the leak plugging main body 1 through the stopping portion 9 to prevent the leak plugging main body 1 and the pushing ring 6 from operating simultaneously, so that the movement of the leak plugging main body 1 cannot be formed and thus the extrusion of the expansion ring 5 cannot be formed.

[0034] As Figure 5 shown, a method of using a pipeline leak plugging device according to an embodiment is as follows:

[0035] Install a cutter head on the drill head portion 3;

[0036] Put the expansion ring 5 on the mating portion 2 of the leak plugging main body 1, put the spacer sleeve 7 outside the pushing portion 4, and threadedly connect the pushing ring 6 to the pushing portion 4;

[0037] Install a drilling tool on the clamping part 8 and drill a hole at the leakage point of the pipeline. After drilling, the drill head 3, the mating part 2 and the expansion ring 5 arranged outside are in the hole;

[0038] Clamp the stop part 9 with a wrench and rotate the propulsion ring 6 so that the propulsion ring 6 approaches the drill head 3 side;

[0039] When the spacer sleeve 7 abuts against the pipeline wall, continue to rotate the propulsion ring 6. The propulsion part 4 drives the leakage plugging body 1 to move out of the hole, and continuously rotate the propulsion ring 6 so that the pipeline leakage plugging device is firmly in contact with the pipeline, achieving a sealing effect.

[0040] The above description is only the preferred embodiment of the present application and the description of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A pipeline leak plugging device, characterized in that, Comprising: A leak plugging main body (1), the leak plugging main body (1) sequentially includes: a drill head portion (3) provided at one end thereof for processing a hole in the pipe wall, a mating portion (2) disposed adjacent to the drill head portion (3), and a pushing portion (4) disposed adjacent to the mating portion (2), and a pushing ring (6) is fitted on the pushing portion (4); An expansion ring (5), the expansion ring (5) is sleeved outside the mating portion (2); Push the pushing ring (6) along the axial direction of the leak plugging main body (1) towards the drill head portion (3), so that the mating portion (2) applies an axial reverse extrusion force to the expansion ring (5) to cause it to deform; The mating portion (2) includes: a columnar portion (21) adjacent to the pushing portion (4) and a frustum portion (22) integrally connected to the columnar portion (21); The inner wall of the expansion ring (5) on the side close to the drill head portion (3) has the same taper as the frustum portion (22); A groove is provided in the inner wall of the expansion ring (5). When the pushing ring (6) acts, it squeezes the expansion ring (5) so that the radial dimension of the expansion ring (5) increases at the groove; when the pushing ring (6) acts, the leak plugging main body (1) moves towards the outside of the hole, so that the mating portion (2) forms an extrusion force on the expansion ring (5). When the expansion ring (5) expands at the inner wall with a taper, a first expansion point (51) of the expansion ring (5) is formed; after the expansion ring (5) forms a first seal with the pipe, the pushing ring (6) continues to act, and the mating portion (2) continues to move towards the orifice direction, while the pushing ring (6) is outside the hole. Therefore, the expansion ring (5) continues to be squeezed under the action of the pushing ring (6) and the mating portion (2). Since the space of the expansion ring (5) is getting smaller and smaller, the radial dimension of the expansion ring (5) increases at the groove, so that an interference fit is formed between the expansion ring (5) and the pipe hole, and a frictional force is formed on the inner wall of the pipe hole to achieve the seal between the expansion ring (5) and the pipe hole wall. This groove is the second expansion point (52) of the expansion ring (5).

2. The pipeline leakage plugging device according to claim 1, wherein: The cross-section of the groove is triangular.

3. The pipeline leak plugging device according to claim 1, characterized in that: The material of the expansion ring (5) is copper.

4. The pipeline leakage plugging device according to claim 1, characterized in that: The taper of the frustum portion (22) is 14 degrees.

5. The pipeline leakage plugging device according to claim 1, wherein: The pushing portion (4) is threadedly connected to the pushing ring (6), and a spacer sleeve (7) is provided outside the hole between the pushing ring (6) and the mating portion (2).

6. The pipeline leak plugging device according to claim 1, wherein: A clamping portion (8) for installing a drilling tool is connected to the side of the pushing portion (4) away from the mating portion (2).

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