Plugging tool for pipeline leakage

Abstract

The utility model relates to the technical field of pipeline leakage maintenance auxiliary equipment, in particular to a pipeline leakage plugging tool which comprises a shell assembly used for being arranged on the outer wall of a pipeline in a sleeving mode, the shell assembly comprises a first shell and a second shell which are connected with each other, and the end of the first shell and the end of the second shell are connecting ends. The middle of the first shell and the middle of the second shell are plugging sections, the plugging sections are L-shaped or T-shaped, gaps are reserved between the inner walls of the plugging sections and the outer wall of the pipeline, injection molding holes are formed in the first shell or the second shell, a first sealing piece is connected to the inner wall of the connecting end, and the connecting end is connected with the outer side wall of the pipeline through the first sealing piece. The L-shaped plugging section and the T-shaped plugging section are respectively used for plugging and repairing leakage at a bent section and a tee joint of a pipeline, fitting the shape of the pipeline and solving leakage plugging at a special-shaped position, and a gap is reserved between the plugging section and the pipeline, so that micro-expansive cement or plugging glue can be injected into a cavity, and long-time plugging is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for pipeline leakage repair, and specifically to a plugging tool for pipeline leakage. Background Technique

[0002] At present, pipeline operations in the petrochemical industry often experience leakage due to corrosion perforation. This often causes huge losses in production stoppage and maintenance costs. For main pipelines with regular shapes, leakage repair is relatively easy. However, elbows and tees in pipelines are subject to greater impact from internal fluid media, and leakage often occurs at irregular-shaped positions such as elbows and tees. Due to the irregular shapes of tees and elbows, effective plugging is difficult, and there is currently no effective and low-cost repair method. Therefore, when there is a slight leakage at the tee or elbow position, a steel sheet and rubber sheet are often fixed at the leakage point with a clamp for plugging, and then repaired during a specific maintenance time. However, such a plugging method has poor sealing effect, and it is difficult to achieve long-term plugging with the vibration and pressure changes of the pipeline, easily resulting in plugging failure and subsequent leakage. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a plugging tool for pipeline leakage to solve the problem that it is difficult to achieve long-term plugging when there is leakage at irregular-shaped positions such as elbows and tees in pipelines due to the lack of effective plugging measures.

[0004] The technical solution adopted by the utility model is: a plugging tool for pipeline leakage, including a housing assembly for sleeving on the outer wall of the pipeline. The housing assembly includes a first housing and a second housing connected to each other. The ends of the first housing and the second housing are connection ends, and the middle parts of the first housing and the second housing are plugging sections. The plugging sections are in an "L" shape or a "T" shape. There is a gap between the inner wall of the plugging section and the outer wall of the pipeline. An injection hole is provided on the first housing or the second housing. A first seal is connected to the inner wall of the connection end, and the connection end is connected to the outer side wall of the pipeline through the first seal.

[0005] After adopting the above structure, the following beneficial effects are achieved:

[0006] 1. By installing and fixing the first housing and the second housing on the outer side of the leaking pipeline, and at the same time filling the gap between the first housing, the second housing and the pipeline through the first seal, it is possible to plug the leakage point of the pipeline, avoid continuous leakage, reduce the waste of materials inside the pipeline, and also prevent the leakage point from being damaged more and more under long-term pressure, ultimately leading to pipeline scrapping.

[0007] 2. The "L"-shaped plugging section can be used to plug and repair the pipe elbow, while the "T"-shaped plugging section is used to plug and repair the leakage at the pipe tee. Selecting different-shaped plugging sections according to the position of the pipe leakage can make it more conform to the pipe shape, improve the plugging effect, and effectively solve the leakage plugging at the special-shaped position.

[0008] 3. A gap is left between the plugging section and the pipe to form a cavity. Micro-expansion cement or plugging glue can be injected into the cavity through the injection hole for internal filling, further plugging the leakage point, improving the plugging effect, and being more stable, and long-term plugging can be achieved.

[0009] Preferably, one side of the first housing is provided with a first boss, the second housing is provided with a first groove matching the first boss, the other side of the first housing is provided with a second groove, and the second housing is provided with a second boss matching the second groove.

[0010] When assembling the first housing and the second housing, by inserting the first boss into the inner side of the first groove and the second boss into the inner side of the second groove, on the one hand, it can facilitate guiding and fixing the relative positions of the first housing and the second housing, ensuring that the first housing and the second housing can be accurately matched. On the other hand, it can increase the sealing effect at the joint of the first housing and the second housing, reduce the liquid leakage situation, and at the same time, it can also facilitate injecting the plugging glue into the plugging section, avoid the glue leakage situation, and improve the glue injection effect.

[0011] Preferably, a second seal is further provided on the first housing, and the end of the second seal abuts against the inner side wall of the second housing. A third seal is further provided on the side of the second housing away from the second seal, and the end of the third seal abuts against the inner side wall of the first housing.

[0012] The setting of the second seal and the third seal can block the joint of the first housing and the second housing, and when injecting glue, they can be further pressed tightly at the joint by being extruded by the plugging glue, thereby further improving the sealing effect between the first housing and the second housing.

[0013] Preferably, a sealing assembly is further provided between the connection ends of the first housing and the second housing. The sealing assembly includes two connected sealing heads. The inner side wall of the sealing head is provided with a fourth seal, and the sealing head abuts against the pipe through the fourth seal. The first housing and the second housing abut against the outer side wall of the sealing head through the first seal.

[0014] The sealing assembly can be installed between the connection ends of the first housing, the second housing and the pipeline. The sealing assembly is connected to the pipeline through a fourth seal, and the sealing assembly is connected to the connection end through a first seal, so that the plugging tool can ensure a stable and effective sealing effect even when the diameter of the pipeline is smaller than the diameters of the connection ends of the first housing and the second housing. With such a setting, when dealing with pipelines of different diameters, only the sealing assembly with different inner diameters needs to be replaced to achieve sealing, without customizing the entire plugging tool, which reduces the cost. Moreover, when dealing with a tee pipeline with different diameters at three ends, it can also be adapted through the sealing assembly.

[0015] Preferably, a third boss is provided on one side of the head, and a third groove matching the third boss is formed on the other side of the head.

[0016] When assembling the two-piece heads, the relative position of the two-piece heads can be guided and fixed through the cooperation of the third boss and the third groove, ensuring that the relative position of the two-piece heads will not change after installation, and at the same time improving the sealing effect between the heads.

[0017] Preferably, a fifth seal is further connected to one end of the head facing the plugging section of the first housing, and the end of the fifth seal abuts against the inner side walls of the first housing and the second housing.

[0018] The setting of the fifth seal can seal the end of the head, preventing the leaked liquid or the injected plugging glue from flowing out through the gap between the head and the first housing and the second housing, and further improving the sealing effect.

[0019] Preferably, the seams where the two-piece heads are connected are arranged staggered with the seams where the two-piece heads are connected to the first housing and the second housing.

[0020] The staggered arrangement of the seams of the head and the seams of the first housing and the second housing further improves the sealing effect of the plugging tool, and can effectively reduce the probability of the leaked liquid or the injected plugging glue flowing out through the seams of the head and the seams of the first housing and the second housing.

[0021] Preferably, the first housing and the second housing are locked by a bolt assembly.

[0022] Locking the first housing and the second housing by bolts can improve the stability of the connection between the first housing and the second housing, improve its sealing effect, and at the same time avoid the connection failure during the long-term plugging process.

[0023] Preferably, an exhaust hole is provided at the end of the plugging section of the first housing or the second housing close to the connection end.

[0024] The setting of the exhaust holes can enable the plugging glue or slightly expanding cement to flow more smoothly to various positions of the plugging section during the glue injection process, thereby achieving a comprehensive and stable plugging effect. Description of the Drawings

[0025] Figure 1 is a schematic perspective structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 1.

[0026] Figure 2 is a schematic front view structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 1

[0027] Figure 3 is a schematic left view structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 1.

[0028] Figure 4 is Figure 2 a schematic cross-sectional structure diagram of the "A - A" area in

[0029] Figure 5 is Figure 3 a schematic cross-sectional structure diagram of the "B - B" area in

[0030] Figure 6 is a schematic installation structure diagram of the first housing and the first seal of a pipeline leakage plugging tool of the present utility model in Embodiment 2.

[0031] Figure 7 is a schematic installation structure diagram of the second housing and the first seal of a pipeline leakage plugging tool of the present utility model in Embodiment 2.

[0032] Figure 8 is a schematic perspective structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 3.

[0033] Figure 9 is a schematic perspective structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 4.

[0034] Figure 10 is a schematic left view cross-sectional structure diagram of a pipeline leakage plugging tool of the present utility model in Embodiment 4.

[0035] Figure 11 is a schematic perspective structure diagram of the seal assembly of a pipeline leakage plugging tool of the present utility model in Embodiment 4.

[0036] Among them, the first housing 10, the first boss 11, the second groove 12, the second seal 13, the second housing 20, the first groove 21, the second boss 22, the third seal 23, the sealing assembly 30, the head 31, the third boss 311, the third groove 312, the fourth seal 32, the fifth seal 33, the bolt assembly 40, the injection hole 51, the exhaust hole 52, the pipe 60, and the first seal 70. Detailed implementation mode

[0037] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0038] Embodiment 1

[0039] According to the attached drawings of the specification Figures 1-5 As shown, the present utility model provides a plugging tool for pipeline 60 leakage, including a housing assembly for sleeving on the outer wall of the pipeline 60, wherein the housing assembly includes a first housing 10 and a second housing 20 which are connected to each other. The middle part of the first housing 10 and the second housing 20 is a plugging section. There is a gap between the plugging section and the outer side wall of the pipeline 60 to form a filling cavity. The ends of the first housing 10 and the second housing 20 are connection ends for connecting with the pipeline 60. A first sealing groove is provided at the connection ends, and a first seal is installed in the first sealing groove. The connection ends of the first housing 10 and the second housing 20 are both abutted against the outer side wall of the pipeline 60 through the first seal. In this embodiment, the first seal is a rubber sealing strip.

[0040] In this embodiment, the plugging section of the first housing 10 and the second housing 20 is in a "T" shape, which can be used to plug a tee pipe 60. A first groove 21 is formed on the upper side of the plugging section of the second housing 20, and a first boss 11 having the same shape and size as the first groove 21 is provided on the upper side of the plugging section of the first housing 10. A second boss 22 is provided on the lower side of the plugging section of the second housing 20, and a second groove 12 having the same size and shape as the second boss 22 is formed on the lower side of the plugging section of the first housing 10. When the first housing 10 and the second housing 20 are connected, the first boss 11 is inserted into the first groove 21, and the second boss 22 is inserted into the second groove 12 to fix the relative positions of the first housing 10 and the second housing 20, and at the same time improve the sealing effect between the first housing 10 and the second housing 20. At the same time, a second seal 13 is provided on one side of the first groove 21 facing the pipe 60. The second seal 13 extends to one side of the second housing 20 and abuts against the inner wall of the second housing 20. A third seal 23 is provided on one side of the second groove 12 facing the pipe 60. The third seal 23 extends to one side of the first housing 10 and abuts against the inner wall of the first housing 10. The second seal 13 and the third seal 23 can cover the joint between the first housing 10 and the second housing 20, further improving the sealing effect.

[0041] In this embodiment, sealing strips are also filled between the first boss 11 and the first groove 21, and between the second boss 22 and the second groove 12, which can further improve the sealing performance after the first housing 10 and the second housing 20 are connected.

[0042] In this embodiment, an injection hole 51 for injecting plugging glue or micro-expansion cement into the filling cavity is provided in the middle of the plugging section of the second housing 20. At the same time, three exhaust holes 52 are formed in the first housing 10. The exhaust holes 52 are respectively located at the ends of the plugging section of the first housing 10 close to the connection end. Threads are also provided on the outside of the exhaust holes 52, and end caps can be connected through the threads. Through the exhaust holes 52, the injected plugging glue or micro-expansion cement can flow more smoothly to various parts of the plugging section. At the same time, the end caps can close the exhaust holes 52. When the plugging glue or micro-expansion cement has flowed to a certain exhaust hole 52, the exhaust hole 52 is closed by the end cap, so that the subsequent filled plugging glue or micro-expansion cement flows in the direction of other unclosed exhaust holes 52, thereby controlling the flow direction of the plugging glue in the filling cavity and enabling the plugging glue or micro-expansion cement to be filled more evenly in the plugging section.

[0043] A number of connecting blocks are also welded on the first housing 10 and the second housing 20, and connection holes are formed in the connecting blocks. After the first housing 10 and the second housing 20 are connected, they are connected in the connection holes through the bolt assembly 40, and the first housing 10 and the second housing 20 are locked through the bolt assembly 40. If long-term plugging is required, the first housing 10 and the second housing 20 can also be welded by electric welding to achieve a more stable connection.

[0044] Its working principle is that the first housing 10 and the second housing 20 are buckled on the pipeline 60 to be plugged, and the first housing 10 and the second housing 20 are guided and limited through the cooperation of the first boss 11 and the first groove 21 and the cooperation of the second boss 22 and the second groove 12. Then, the first housing 10 and the second housing 20 are connected and locked by bolts. During the locking process, the first seal is extruded and deformed, and the first seal fills the gap between the first housing 10, the second housing 20 and the pipeline 60 to seal the filling cavity. Then, the plugging glue is injected into the filling cavity through the injection hole 51 to complete the plugging of the leaking pipeline 60.

[0045] Embodiment 2

[0046] According to the attached drawings of the specification Figures 6-7 As shown, the difference between this embodiment and Embodiment 1 is that the first seal is a semi-circular sealing strip. When the first sealing strip is connected to the first housing 10, one end of the first sealing strip extends out of the first housing 10, and there is a distance between the other end of the first sealing strip and the end of the first sealing groove. And the extending ends of adjacent first seals are opposite, that is, the upper end of the sealing strip near the outside at the left end of the first housing 10 extends out, while the lower end of the sealing strip near the inside extends out. The installation state between the first sealing strip and the second housing 20 is opposite to the installation state between the first sealing strip and the first housing 10, so that the first sealing strips in the first housing 10 and the second housing 20 will not interfere during installation, and the joint of the two first sealing strips and the joint where the first housing 10 and the second housing 20 are connected are not in the same plane, further improving its sealing performance.

[0047] Embodiment 3

[0048] According to the attached drawings of the specification Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the plugging section of the first housing 10 and the second housing 20 is "L"-shaped and can be used to plug the bent section of the pipeline 60.

[0049] Embodiment 4

[0050] According to the attached drawings of the specification Figures 9-11As shown, the difference between this embodiment and embodiment 1 is that a sealing assembly 30 is further provided between the connecting ends of the first shell 10 and the second shell 20, wherein the sealing assembly 30 includes two halves of a head 31 connected to each other, and the head 31 is wrapped around the outside of the pipe 60 after being connected, and a second sealing groove is further provided on the inner side of the head 31, and a fourth sealing member 32 is installed in the second sealing groove, the head 31 is abutted against the outer side wall of the pipe 60 through the fourth sealing member 32, and the first shell 10 and the second shell 20 are abutted against the outer side wall of the head 31 through the first sealing member.

[0051] In this embodiment, a third boss 311 is provided on one side of the head 31, and a third groove 312 with the same shape and size as the third boss 311 is provided on the other side of the head 31. When the two-lobed head 31 are merged, the third boss 311 is inserted into the third groove 312 to guide and limit the two-lobed head 31, thereby ensuring that the relative position of the two-lobed head 31 is stable and accurate. At the same time, in this embodiment, the seams connecting the two-lobed head 31 and the seams connecting the first shell 10 and the second shell 20 are staggered with each other, further improving the sealing effect and preventing the sealing glue from flowing out when the sealing glue is injected.

[0052] In this embodiment, a fifth seal 33 is further provided at one end of the head 31 facing the sealing section. The fifth seal 33 is semi-annular, and the outer end of the fifth seal 33 is bent and abuts against the inner wall of the first shell 10 and the second shell 20. The gap between the head 31 and the first shell 10 and the second shell 20 is further filled by the fifth seal 33 to improve the sealing effect. At the same time, the fifth seal 33 with a bent end abuts against the inner wall of the first shell 10 and the second shell 20. When the sealing glue is filled, it can be pressed against the side wall of the first shell 10 and the second shell 20 under the action of the sealing glue to prevent the sealing glue from flowing out, thereby improving the sealing effect. At the same time, an extension section is also provided at one end of the fifth seal 33, which can be overlapped on top of another fifth seal 33 to make the sealing effect of the fifth seal 33 more stable.

[0053] Its working principle is that when dealing with the tee positions of some pipes with different diameters, the sealing component 30 is first connected to the small diameter of the pipe 60, and then the first shell 10 and the second shell 20 are connected to the sealing component 30 and the outside of the pipe 60 to seal the leaking pipe 60. In this way, there is no need to customize different sealing tools for each different pipe 60. Only different sealing components 30 need to be selected, which reduces the sealing cost.

[0054] The directional terms mentioned in the present utility model, such as "up", "down", "left", "right", etc., are only for better and clearer illustration and understanding of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0055] The above has described the preferred embodiments of the present utility model, but it should not be construed as a limitation to the claims. The present utility model is not limited to the above embodiments, and its specific structure is allowed to vary. All changes made within the scope of protection of the independent claims of the present utility model are within the scope of protection of the present utility model.

Claims

1. A plugging tool for pipeline leakage, including a housing assembly for sleeving on the outer wall of the pipeline, characterized in that, The shell assembly includes a first shell and a second shell connected to each other, the ends of the first shell and the second shell are connecting ends, the middle parts of the first shell and the second shell are sealing sections, the sealing sections are "L"-shaped or "T"-shaped, and a gap is left between the inner wall of the sealing section and the outer wall of the pipe. An injection hole is opened on the first shell or the second shell, and a first sealing member is connected to the inner wall of the connecting end, and the connecting end is connected to the outer wall of the pipe through the first sealing member.

2. The plugging tool for pipeline leakage according to claim 1, characterized in that, A first boss is provided on one side of the first shell, a first groove matching the first boss is provided on the second shell, a second groove is provided on the other side of the first shell, and a second boss matching the second groove is provided on the second shell.

3. The plugging tool for pipeline leakage according to claim 2, characterized in that, A second seal is also provided on the first shell, and the end of the second seal abuts against the inner wall of the second shell. A third seal is also provided on the side of the second shell away from the second seal, and the end of the third seal abuts against the inner wall of the first shell.

4. The plugging tool for pipeline leakage according to claim 1, characterized in that, A sealing assembly is also provided between the connecting ends of the first shell and the second shell. The sealing assembly includes two mutually connected heads. A fourth sealing member is provided on the inner side wall of the head, and the head is abutted against the pipeline through the fourth sealing member. The first shell and the second shell are abutted against the outer side wall of the head through the first sealing member.

5. A plugging tool for pipeline leakage according to claim 4, characterized in that, A third boss is provided on one side of the sealing head, and a third groove matching the third boss is provided on the other side of the sealing head.

6. The plugging tool for pipeline leakage according to claim 4, characterized in that, One end of the sealing head facing the sealing section of the first shell is further connected to a fifth sealing member, and the end of the fifth sealing member abuts against the inner side walls of the first shell and the second shell.

7. A plugging tool for pipeline leakage according to claim 4, characterized in that, The seams connecting the two halves of the head and the seams connecting the first shell and the second shell are arranged alternately.

8. A plugging tool for pipeline leakage according to claim 2, characterized in that, The first shell and the second shell are locked by a bolt assembly.

9. The plugging tool for pipeline leakage according to claim 1, characterized in that An exhaust hole is formed at the end of the sealing section of the first shell or the second shell close to the connecting end.

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