Gas pipeline leaking stoppage device and using method thereof

Abstract

The invention discloses a gas pipeline leaking stoppage device and a using method thereof, and relates to the technical field of gas pipelines, and the gas pipeline leaking stoppage device comprises a fixing screw 1, an upper telescopic rod 2, a lower telescopic rod 3, a movable sliding ring 4, a hexagonal fixing piece 5, a fixing nail 6 and a pressing plate 7. The device is simple in design and easy to understand and operate, quick mounting and dismounting are allowed due to the component design of the device, leakage can be effectively handled, gas leakage can be quickly controlled in an emergency, it is ensured that accidents are not expanded, the gas pipeline leakage stopping efficiency is improved, and the device plays an important role in reducing personal injury and production loss to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the field of gas pipelines, and specifically to a gas pipeline leak plugging device and its usage method. Background Art

[0002] In the process of industrial production, gas pipelines, as key infrastructure for transporting gas, are widely used in various fields. However, gas pipelines are in a complex working environment for a long time and are often faced with the serious problem of gas leakage under the combined influence of various adverse factors. Among them, the corrosion and erosion of the medium continuously erode the inner wall of the pipeline, the stress generated during the welding process and the defects existing in the welds, as well as the damage of the connection seals for various reasons, all become important inducements for gas leakage.

[0003] Once gas leaks, the consequences are unimaginable, posing a serious threat to personal safety and production safety. If not handled properly or in a timely manner, it is very likely to trigger malignant accidents such as fires, explosions, and poisoning, bringing huge casualties and property losses to the enterprise. At the same time, whether it is the main pipeline or the branch pipeline of the gas pipeline, the unplanned shutdown for maintenance will interfere with the normal production order of the company, resulting in production stagnation and damaged benefits.

[0004] In this context, plugging the leak under pressure has become the main means to deal with gas leakage and carry out emergency rescue work. The plugging operation under pressure can timely handle the leakage point without stopping the gas transmission, minimizing the impact on production to the greatest extent. However, this is a special operation with strong technicality, high danger, and extremely great operation difficulty, which is of crucial significance for the company to effectively control gas leakage, prevent various serious accidents caused by leakage, and minimize personal injuries and production losses to the greatest extent.

[0005] After a long period of a large number of operation practices, we found that there are many drawbacks in the existing conventional plugging methods. These methods often have difficulty in effectively dealing with gas leakage, the plugging effect is not good, and the retention time is not ideal, often requiring repeated plugging operations. Even more, some conventional methods need to be supplemented with measures such as welding repair, and this way not only damages the anti-corrosion layer inside the pipeline, but also easily generates new stress damage in the pipeline, laying a hidden danger for the subsequent safe operation of the pipeline.

[0006] Therefore, the applicant, based on years of rich design and development and actual production experience in this related industry, studied and improved the existing structure and deficiencies, and provided a gas pipeline leak plugging device and its usage method, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0007] (I) Technical Problems to be Solved

[0008] In view of the deficiencies of the prior art, the present invention provides a gas pipeline leak plugging device and its usage method, which solve the problem that when there is a leak point in the gas pipeline, it can work stably and reliably under the high-pressure environment of the gas pipeline, effectively achieve leak plugging for pipeline leak points of different shapes and sizes, prevent the leak plugging from loosening, ensure the leak plugging effect, and prevent gas leakage.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention is realized through the following technical solutions: A gas pipeline leak plugging device includes seven parts: a fixed screw, an upper telescopic rod, a lower telescopic rod, a moving sliding ring, a hexagonal fixing part, a fixing nail, and a pressing plate. Four grooves are evenly distributed on the nut of the fixed screw, and these grooves are used to connect with the upper telescopic rod; four grooves are also evenly distributed on the outer part of the moving sliding ring, and these grooves are used to connect with the lower telescopic rod; one end of the lower telescopic rod is provided with a nail hole, and this nail hole is assembled with one end of the upper telescopic rod. The upper and lower telescopic rods are tightly connected by passing a fixing nail through the nail hole; the moving sliding ring is sleeved on the fixed screw and can slide freely; a through hole is opened on the pressing plate, and the fixed screw passes through the through hole of the pressing plate so that the pressing plate is sleeved on the fixed screw; the middle part of the hexagonal fixing part is provided with a thread matching the fixed screw, and threaded holes are provided at the six feet of the hexagonal fixing part. This threaded hole cooperates with the fixing nail. When the hexagonal fixing part is tightened, the bolts at its six feet can press the pressing plate, thereby preventing the leak plugging from loosening under the high-pressure environment of the gas pipeline and ensuring the leak plugging effect.

[0011] Preferably, the fixed screw is made of high-strength material to ensure stability and durability under high-pressure environment.

[0012] Preferably, the upper telescopic rod and the lower telescopic rod serve as fixed supports inside the pipeline leak point and can be adjusted according to the actual situation of the through hole of the gas pipeline leak point to adapt to pipeline leak points of different shapes and sizes.

[0013] Preferably, the pressing plate is a steel plate that covers the leak plugging material, and its thickness and size can be adjusted according to the pipeline diameter and the leak point situation.

[0014] Preferably, the surface of the nut of the fixed screw is provided with anti-slip lines, which is convenient for the operator to apply force better when tightening or loosening, and improves the operation convenience.

[0015] Preferably, the surface of the movable slip ring is treated with a thermally sprayed ceramic coating. This ceramic coating has characteristics such as high hardness, low friction coefficient, and good chemical stability. Through the thermal spraying process, the ceramic material is evenly and firmly attached to the surface of the movable slip ring, enabling the movable slip ring to effectively resist wear during frequent sliding, greatly reducing surface loss, and thus ensuring long-term stable operation.

[0016] Preferably, the fixing nails are made of 316L stainless steel material. 316L stainless steel contains molybdenum element and has more excellent corrosion resistance compared to ordinary stainless steel. In a humid gas pipeline environment, it can effectively resist the erosion of moisture, acidic substances, and other corrosive media that may be contained in the gas, prevent rusting, and thus ensure the durability of its fastening performance, always maintaining reliable fastening of the connection part between the upper telescopic rod and the lower telescopic rod.

[0017] A method for using a gas pipeline leak plugging device, using the described gas pipeline leak plugging device, includes the following steps.

[0018] S1: After discovering a leak point in the gas pipeline, first move the movable slip ring to the bottommost position and straighten the upper telescopic rod and the lower telescopic rod so that the nut of the fixing screw can extend into the pipeline leak point.

[0019] S2: After the nut of the fixing screw completely enters the gas pipeline, push the movable slip ring upward to expand the upper telescopic rod and the lower telescopic rod, and the upper and lower telescopic rods closely adhere to the inside of the pipeline leak point.

[0020] S3: Then lay items such as cotton and rags at the pipeline leak point for plugging; after the plugging is completed, press the pressing plate onto the plugged leak point; S4: Finally, respectively adjust the hexagonal fixing member and the fixing nails at the six feet to press the pressing plate tightly and firmly fix the pressing plate against the outer wall of the pipeline.

[0021] (III) Beneficial effects

[0022] The present invention provides a gas pipeline leak plugging device and its using method. Compared with the prior art, it has the following beneficial effects:

[0023] The design is simple, easy to understand and operate. The component design of the device allows for quick installation and disassembly. It can not only effectively deal with leaks but also quickly control gas leakage in case of an emergency, ensure that the accident does not expand, improve the efficiency of gas pipeline leak plugging, and play an important role in minimizing personal injuries and production losses.

[0024] 1. The connection of the present invention is stable. By using the fixing screw nuts and the uniformly distributed grooves on the moving sliding ring, they are respectively used to connect with the upper telescopic rod and the lower telescopic rod, and the upper and lower telescopic rods are tightly connected through the fixing nails passing through the nail holes. This connection method makes the connection between the components of the device more stable and can withstand the high pressure in the gas pipeline.

[0025] 2. The present invention is flexible and adjustable. The upper telescopic rod and the lower telescopic rod can be adjusted according to the actual situation of the leak hole in the gas pipeline, and can adapt to the leak points of pipelines with different shapes and sizes, improving the versatility and applicability of the leak plugging device.

[0026] 3. The present invention has a good leak prevention effect: The pressing plate is used to cover the leak plugging material, and its thickness and size can be adjusted according to the pipeline diameter and the leak point situation, and can better adapt to different leak plugging scenarios; when the hexagonal fixing part is tightened, the bolts at its six feet can press the pressing plate, preventing the leak plugging from loosening under the high-pressure environment of the gas pipeline, effectively ensuring the leak prevention effect.

[0027] The materials of the present invention are durable. The fixing screw is made of high-strength materials, ensuring the stability and durability of the device under high-pressure environment; the surface of the moving sliding ring is specially treated with good wear resistance, and the fixing nails are made of rust-proof materials to prevent rusting in humid environments. These all help to extend the service life of the device, reduce the maintenance cost and replacement frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the device of the present invention;

[0029] Figure 2 is a schematic diagram of the upper fixing screw of the present invention;

[0030] Figure 3 is a schematic diagram of the upper telescopic rod of the present invention;

[0031] Figure 4 is a schematic diagram of the lower telescopic rod of the present invention;

[0032] Figure 5 is a schematic diagram of the moving sliding ring of the present invention;

[0033] Figure 6 is a schematic diagram of the hexagonal fixing part of the present invention;

[0034] Figure 7 is a schematic diagram of the fixing nail of the present invention;

[0035] Figure 8 is a schematic diagram of the pressing plate of the present invention;

[0036] In the figure: 1. Fixing screw; 2. Upper telescopic rod; 3. Lower telescopic rod; 4. Moving sliding ring; 5. Hexagonal fixing part; 6. Fixing nail; 7. Pressing plate. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] As Figures 1 - 8 shown, the present invention provides a technical solution: a gas pipeline leak plugging device, which includes seven parts: a fixed screw 1, an upper telescopic rod 2, a lower telescopic rod 3, a moving sliding ring 4, a hexagonal fixing member 5, a fixing nail 6, and a pressing plate 7. Four grooves are evenly distributed on the nut of the fixed screw 1, and these grooves are used to connect with the upper telescopic rod 2; four grooves are also evenly distributed on the outer side of the moving sliding ring 4, and these grooves are used to connect with the lower telescopic rod 3; one end of the lower telescopic rod 3 is provided with a nail hole, and this nail hole is assembled with one end of the upper telescopic rod 2. The upper and lower telescopic rods are tightly connected by passing the fixing nail 6 through the nail hole; the moving sliding ring 4 is sleeved on the fixed screw 1 and can slide freely; a through hole is opened on the pressing plate 7, and the fixed screw 1 passes through the through hole of the pressing plate 7, so that the pressing plate 7 is sleeved on the fixed screw 1; the middle part of the hexagonal fixing member 5 is provided with a thread matching the fixed screw 1, and threaded holes are provided at the six feet of the hexagonal fixing member 5. This threaded hole cooperates with the fixing nail 6. When the hexagonal fixing member 5 is tightened, the bolts at its six feet can press the pressing plate 7, so as to prevent loosening of the leak plugging under the high-pressure environment of the gas pipeline and ensure the leak plugging effect.

[0039] As Figure 2 shown, the fixed screw 1 is made of high-strength material to ensure stability and durability under high-pressure environment.

[0040] As Figure 3 、 Figure 4 shown, the upper telescopic rod 2 and the lower telescopic rod 3 act as fixed supports inside the pipeline leak point and can be adjusted according to the actual situation of the through hole of the gas pipeline leak point to adapt to pipeline leak points of different shapes and sizes.

[0041] As Figure 8 shown, the pressing plate 7 is a steel plate for covering the leak plugging material, and its thickness and size can be adjusted according to the pipeline diameter and the leak point situation.

[0042] The surface of the nut of the fixed screw 1 is provided with anti-slip lines, which is convenient for the operator to apply force better when tightening or loosening, and improves the operation convenience.

[0043] As Figure 5As shown, the surface of the movable slip ring 4 is treated with a thermally sprayed ceramic coating. This ceramic coating has characteristics such as high hardness, low friction coefficient, and good chemical stability. Through the thermal spraying process, the ceramic material is evenly and firmly attached to the surface of the movable slip ring, enabling the movable slip ring to effectively resist wear during frequent sliding, greatly reducing surface loss, and thus ensuring long-term stable operation.

[0044] As Figure 7 shown, the fixing nail 6 is made of 316L stainless steel material. 316L stainless steel contains molybdenum element and has more excellent corrosion resistance compared to ordinary stainless steel. In the humid gas pipeline environment, it can effectively resist the erosion of moisture, acidic substances, and other corrosive media that may be contained in the gas, prevent rusting, and thus ensure the durability of its fastening performance, always maintaining a reliable fastening of the connection part between the upper telescopic rod 2 and the lower telescopic rod 3.

[0045] A method of using a gas pipeline leak plugging device, which adopts a gas pipeline leak plugging device, includes the following steps.

[0046] S1: After discovering a leak point in the gas pipeline, first move the movable slip ring 4 to the bottommost position, and straighten the upper telescopic rod 2 and the lower telescopic rod 3 so that the nut of the fixing screw 1 can extend into the pipeline leak point.

[0047] S2: After the nut of the fixing screw 1 completely enters the gas pipeline, push the movable slip ring 4 upward to expand the upper telescopic rod 2 and the lower telescopic rod 3, and the upper and lower telescopic rods are closely attached to the inside of the pipeline leak point.

[0048] S3: Then lay items such as cotton and rags on the pipeline leak point for plugging; after the plugging is completed, press the pressing plate 7 onto the plugged leak point; S4: Finally, respectively adjust the hexagonal fixing member 5 and the fixing nails 6 at the six feet to press the pressing plate 7 tightly and firmly fix the pressing plate 7 against the outer wall of the pipeline.

[0049] In the first embodiment, during operation, in the gas pipeline detection, when a leak point is found,

[0050] First, move the movable slip ring 4 to the bottommost position of the fixing screw 1, straighten the upper telescopic rod 2 and the lower telescopic rod 3, and extend the nut of the fixing screw 1 into the pipeline through the leak point.

[0051] Next, push the movable slip ring 4 upward, and the upper telescopic rod 2 and the lower telescopic rod 3 expand inside the pipeline. Use the fixing nail 6 to pass through the nail hole for fastening connection, so that the upper and lower telescopic rods are closely attached to the inside of the pipeline leak point.

[0052] Subsequently, lay an appropriate amount of cotton at the leak point for plugging. The size of the pressing plate 7 can completely cover the leak point and provide sufficient pressing area.

[0053] Finally, rotate the hexagonal fixing member 5 and tighten the fixing nails 6 at its six feet simultaneously, so that the pressing plate 7 is firmly fixed and tightly attached to the outer wall of the pipeline. The fixing screw 1 is made of high-strength material. During the operation, the anti-slip lines on its surface enable the operator to easily apply force to tighten. The ceramic coating on the surface of the moving sliding ring 4 shows no obvious wear during the sliding process.

[0054] Embodiment 2: On the basis of Embodiment 1, an annular sealing rubber ring is added to the head of the fixing nail 6. The sealing rubber ring is made of silicone rubber with high temperature resistance and resistance to gas corrosion. When the fixing nail 6 is tightened, the sealing rubber ring is extruded and deformed, filling the gap between the nail hole and the fixing nail 6 to prevent gas from leaking from the nail hole, further improving the sealing performance of the leak stoppage.

[0055] The edge of the pressing plate 7 can be provided with a bent portion. When pressing the leak stoppage material, this bent portion can wrap the leak stoppage material, effectively preventing the leak stoppage material from overflowing, and at the same time enhancing the extrusion effect on the cotton. In addition, a number of reinforcing ribs can be evenly distributed on the upper surface of the pressing plate 7. The reinforcing ribs are in a cross shape. The setting of the reinforcing ribs increases the structural strength of the pressing plate 7, making it not easily deformed under high pressure and ensuring the stable pressing of the leak stoppage material.

[0056] During operation, in the gas pipeline detection, when a leak point is found.

[0057] First, move the moving sliding ring 4 to the bottom of the fixing screw 1, straighten the upper telescopic rod 2 and the lower telescopic rod 3, and insert the nut of the fixing screw 1 into the pipeline through the leak point.

[0058] Next, push the moving sliding ring 4 upward. The upper telescopic rod 2 and the lower telescopic rod 3 expand inside the pipeline, and use the fixing nails 6 to pass through the nail holes for fastening connection, so that the upper and lower telescopic rods are closely attached to the inside of the pipeline leak point. An annular sealing rubber ring is added to the head of the fixing nail 6. The sealing rubber ring is made of silicone rubber with high temperature resistance and resistance to gas corrosion. When the fixing nail 6 is tightened, the sealing rubber ring is extruded and deformed, filling the gap between the nail hole and the fixing nail 6 to prevent gas from leaking from the nail hole, further improving the sealing performance of the leak stoppage.

[0059] Subsequently, lay an appropriate amount of cotton at the leak point for plugging. The edge of the pressing plate 7 is provided with an inwardly bent portion. When pressing the leak stoppage material, it can wrap the cotton, effectively preventing the leak stoppage material from overflowing, and at the same time enhancing the extrusion effect on the cotton, improving the leak stoppage effect. In addition, a number of reinforcing ribs are evenly distributed on the upper surface of the pressing plate 7. The reinforcing ribs are in a cross shape. The setting of the reinforcing ribs increases the structural strength of the pressing plate 7, making it not easily deformed under high pressure and ensuring the stable pressing of the leak stoppage material.

[0060] Finally, rotate the hexagonal fixing part 5 and tighten the fixing nails 6 at its six feet simultaneously, so that the pressing plate 7 is firmly fixed and tightly attached to the outer wall of the pipeline. The fixing screw 1 is made of high-strength material. During the operation, the anti-slip patterns on its surface enable the operator to apply force easily to tighten it. The ceramic coating on the surface of the moving sliding ring 4 shows no obvious wear during the sliding process.

[0061] In summary, the design is simple, easy to understand and operate. The component design of the device allows for quick installation and disassembly. It can not only effectively deal with leaks, but also quickly control gas leaks in case of emergencies, ensuring that accidents do not expand. It also improves the efficiency of plugging gas pipeline leaks and plays an important role in minimizing personal injuries and production losses.

[0062] The present invention has a firm connection. By using the uniformly distributed grooves on the fixing screw nut and the moving sliding ring, they are respectively used to connect with the upper telescopic rod and the lower telescopic rod, and the upper and lower telescopic rods are tightly connected through the fixing nails passing through the nail holes. This connection method makes the connection between the components of the device more stable and can withstand the high pressure inside the gas pipeline.

[0063] The present invention is flexibly adjustable. The upper telescopic rod and the lower telescopic rod can be adjusted according to the actual situation of the through hole at the leakage point of the gas pipeline, and can adapt to leakage points of pipelines with different shapes and sizes, improving the versatility and applicability of the plugging device.

[0064] The present invention has a good anti-leakage effect: The pressing plate is used to cover the plugging material, and its thickness and size can be adjusted according to the pipeline diameter and the leakage point situation, which can better adapt to different plugging scenarios; when the hexagonal fixing part is tightened, the bolts at its six feet can press the pressing plate, preventing loosening of the plugging under the high-pressure environment of the gas pipeline and effectively ensuring the plugging effect.

[0065] The present invention has durable materials. The fixing screw is made of high-strength material, ensuring the stability and durability of the device under high-pressure environment; the surface of the moving sliding ring is specially treated with good wear resistance, and the fixing nails are made of anti-corrosion materials to prevent rusting in humid environments. These all contribute to extending the service life of the device, reducing maintenance costs and replacement frequencies.

[0066] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0067] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipeline leak plugging device, comprising seven parts: a fixed screw (1), an upper telescopic rod (2), a lower telescopic rod (3), a moving sliding ring (4), a hexagonal fixing member (5), a fixing nail (6) and a pressing plate (7), characterized in that: The fixed screw rod (1) has four grooves evenly distributed on its nut, and these grooves are used for connecting with the upper telescopic rod (2); the outer part of the movable sliding ring (4) also has four grooves evenly distributed, and these grooves are used for connecting with the lower telescopic rod (3); one end of the lower telescopic rod (3) is provided with a nail hole, and this nail hole is assembled with one end of the upper telescopic rod (2), and the upper and lower telescopic rods are tightly connected by passing a fixing nail (6) through the nail hole; the movable sliding ring (4) is sleeved on the fixed screw rod (1) and can slide freely; a through hole is opened on the pressing plate (7), and the fixed screw rod (1) passes through the through hole of the pressing plate (7) so that the pressing plate (7) is sleeved on the fixed screw rod (1); the middle part of the hexagonal fixing piece (5) is provided with a thread matching the fixed screw rod (1), and threaded holes are arranged at the six feet of the hexagonal fixing piece (5), and this threaded hole cooperates with the fixing nail (6). When the hexagonal fixing piece (5) is tightened, the bolts at its six feet can press the pressing plate (7), so as to prevent loosening of the leak plugging under the high-pressure environment of the gas pipeline and ensure the leak plugging effect.

2. The gas pipeline leakage plugging device according to claim 1, characterized in that: The fixed screw rod (1) is made of high-strength material to ensure stability and durability under high-pressure environment.

3. The gas pipeline leakage plugging device according to claim 2, characterized in that: The upper telescopic rod (2) and the lower telescopic rod (3) are used as fixed supports inside the pipeline leak point and can be adjusted according to the actual situation of the through hole of the gas pipeline leak point to adapt to pipeline leak points of different shapes and sizes.

4. A gas pipeline leakage plugging device according to claim 3, characterized in that: The pressing plate (7) is a steel plate for covering the leak plugging material, and its thickness and size can be adjusted according to the pipeline diameter and the leak point situation.

5. The gas pipeline leakage plugging device according to claim 4, characterized in that: The surface of the nut of the fixed screw rod (1) is provided with anti-slip lines, which is convenient for the operator to apply force better when tightening or loosening, and improves the operation convenience.

6. The gas pipeline leak plugging device according to claim 5, characterized in that: The surface of the movable sliding ring (4) is treated by thermal spraying ceramic coating. This ceramic coating has characteristics such as high hardness, low friction coefficient and good chemical stability. Through the thermal spraying process, the ceramic material is evenly and firmly attached to the surface of the movable sliding ring, so that the movable sliding ring can effectively resist wear during frequent sliding, greatly reduce the surface loss, and thus ensure long-term stable operation.

7. The gas pipeline leakage plugging device according to claim 6, characterized in that: The fixing nail (6) is made of 316L stainless steel material. 316L stainless steel contains molybdenum element and has more excellent corrosion resistance compared with ordinary stainless steel. In the humid gas pipeline environment, it can effectively resist the erosion of moisture, acidic substances and other corrosive media that may be contained in the gas, prevent the occurrence of rust, and then ensure the durability of its fastening performance, and always maintain the reliable fastening of the connection part of the upper telescopic rod (2) and the lower telescopic rod (3).

8. A method for using a gas pipeline leak plugging device, characterized in that: Adopting a gas pipeline leak plugging device according to any one of 1-7, including the following steps S1: After finding the gas pipeline leak point, first move the movable sliding ring (4) to the bottommost part and straighten the upper telescopic rod (2) and the lower telescopic rod (3) so that the nut of the fixed screw rod (1) can extend into the pipeline leak point. S2: After the nut of the fixed screw (1) completely enters the gas pipeline, push the movable slip ring (4) upward so that the upper telescopic rod (2) and the lower telescopic rod (3) expand, and the upper and lower telescopic rods are closely attached to the inside of the pipeline leak point; S3: Then, lay items such as cotton and rags on the pipeline leak point for plugging; after the plugging is completed, press the pressing plate (7) onto the plugged leak point; S4: Finally, respectively adjust the hexagonal fixing part (5) and the fixing nails (6) at the six feet to press the pressing plate (7) tightly, and firmly fix the pressing plate (7) against the outer wall of the pipeline.

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