Two-way anti-pull-off pipeline first-aid repair leak stopper

Abstract

The utility model discloses a bidirectional anti-pull-off pipeline first-aid repair leak stopper, and relates to the field of pipeline first-aid repair. A traditional leaking stoppage device is used as a base body, and anti-pulling-off assemblies are additionally arranged at the front end and the rear end of an overall shell of the leaking stoppage device in an up-down-left-right symmetrical two-way feeding mode, so that the position near a PE pipeline crack and the leaking stoppage device are connected in a reinforced mode. After the device is additionally arranged on the broken part of the PE pipeline, the broken part of the repaired PE pipeline has a pull-off prevention function, so that the repair quality is greatly improved, the probability that the pipeline is pulled off again and leaks is reduced, the water cut-off frequency is reduced, the influence on domestic water of residents is reduced, long-term stable effective leaking stoppage is realized, and the device becomes an ideal choice of pipeline repair supplies. In a similar way, the connecting device is pre-installed at the butt joint position of a newly connected PE pipeline in advance, the pipeline can be effectively prevented from being pulled off, fractured and leaked, smooth conveying of liquid in the pipeline is guaranteed, the repair probability and repair cost of the pipeline are reduced, and the connecting device has wide applicability and good industry prospects.

Description

A two-way anti-pull-out pipe repair and leak sealing device Technical Field

[0001] This utility model relates to the technical field of pipeline emergency repair, specifically a bidirectional anti-pull-out pipeline emergency repair and leak sealing device, which is especially suitable for emergency repair of PE pipelines transporting liquids or dust. Background Technology

[0002] With the expansion of urban areas and the rapid development of industrial production, the use of pipelines to transport liquids or dust is becoming increasingly common—such as urban water supply, crude oil transportation in oil refineries, chemical liquid transportation in chemical plants, coal powder transportation in coking plants, and coal ash transportation in power plants. Moreover, in order not to affect the smooth flow of road traffic, most cities have chosen to lay underground pipelines for infrastructure construction.

[0003] Take water supply, which is essential to everyone's life, as an example. Initially, cast iron or ductile iron pipes were mostly chosen for water supply. However, with the passage of time, rust inevitably appeared on the pipe walls or at the welds. Once rusting began, it became increasingly severe, leading to leaks and, in severe cases, pipe cracking and water leakage. Subsequently, it was discovered that PE pipes could replace cast iron or ductile iron pipes for water supply. This not only prevented rust from forming inside the pipes or at the welds, but PE pipes were also significantly cheaper than cast iron or ductile iron pipes, resulting in a gradual increase in their use in water supply systems. However, PE pipes also gradually revealed their shortcomings during use. When two PE pipes were joined, they needed to be butt-welded. Due to the limited strength of the butt-welded joint, the long-term scouring action of the liquid transported within the pipe could easily cause cracks to appear at the butt-welded joint, leading to leaks. Once a pipe leak occurs, the valves on the affected section must be immediately shut off, and significant manpower, resources, and funds must be invested in emergency repairs. Because water supply must be shut off during repairs, residents are unable to access normal drinking water, causing considerable inconvenience. For example, they cannot cook meals, wash clothes, or flush toilets. Therefore, residents in the affected areas urgently hope that the pipe repairs can be completed efficiently and effectively so that normal water supply can be restored as soon as possible. Pipeline repair typically requires the use of leak-sealing devices. While these devices can enable rapid repairs, they have a significant drawback that urgently needs improvement: after a period of use, the commonly used leak-sealing devices installed at cracks in PE pipes often re-open near the original cracks due to the lack of a reinforced connection between the pipe and the device, coupled with unstable water pressure within the PE pipe. This causes considerable inconvenience to people's lives and travel—for example, in northern winters, leaks can cause icy ground, leading to pedestrians slipping and getting injured, or causing traffic jams. Furthermore, repeated pipeline repairs and water outages are necessary, wasting manpower, resources, and money, and disrupting people's normal lives. Therefore, there is an urgent need to improve and perfect the current leak-sealing devices, and to design a pipeline repair leak-sealing device with anti-pull-out function. It should not only be able to effectively seal leaks and install quickly and safely, but also be able to reinforce the connection with the cracked part of the PE pipe to achieve the anti-pull-out function. In this way, when the PE pipe breaks, leaks and pulls out, this repair device can be safely and quickly installed to achieve long-term, efficient and stable leak sealing, improve the quality and efficiency of repair, greatly reduce the probability of pipeline pull-out and leakage again, shorten the pipeline water supply interruption time, and reduce the impact on residential water use, making it an ideal choice for pipeline repair products.In addition to being suitable for situations where PE pipes break, leak, or pull out, the improved repair device is also suitable for installation at the joints of newly connected PE pipes that have not yet been put into use in fields such as metallurgy and food processing. By installing this repair device in advance, it can effectively prevent pipe pull-out, breakage, and leakage, ensuring the smooth and safe transportation of the liquid being transported, and greatly reducing the probability and cost of pipe repair. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a bidirectional anti-pull-out pipe repair and leak sealing device. When installed on the broken section of a PE pipe, this device provides anti-pull-out protection, significantly improving repair quality, reducing the likelihood of re-extraction and leakage, minimizing water outages, reducing disruption to residential water supply, and achieving long-term, stable, and effective leak sealing. It is an ideal choice for pipe repair equipment. Similarly, pre-installing this device at the joint of newly connected PE pipes effectively prevents pull-out breakage and leakage, ensuring smooth liquid transport within the pipe, reducing the likelihood and cost of pipe repairs, and demonstrating wide applicability and promising industry prospects.

[0005] The objective of this utility model can be achieved through the following measures:

[0006] This utility model discloses a bidirectional anti-pull-out pipe repair and leak-sealing device, which consists of two interlocking semi-circular shells with an axial sealing gasket at the connection point, connected by a flange and fixing bolts to form a cylindrical body as a whole. (This utility model is designed as a flange-connected split structure, which facilitates quick and safe installation at the broken part of the PE pipe, improving repair efficiency, shortening water outage time, and reducing the impact on residential water supply; the axial sealing gasket at the flange connection can seal the flange connection, effectively preventing leakage.) Aging-resistant and corrosion-resistant semi-ring rubber sealing rings are embedded in the mounting grooves at both ends of the inner surface of the cylindrical body. (To ensure smooth installation of the utility model at the broken part of the PE pipe, the assembly relationship between the utility model and the PE pipe is definitely a clearance fit; the semi-ring rubber sealing rings between the inner surfaces of both ends of the utility model and the outer surface of the PE pipe can effectively seal the joints at both ends.) The sealing of the joint surface effectively plugs leaks, enabling rapid repairs, improving repair efficiency, shortening pipeline water outage time, and reducing the impact on residential water use. Four anti-pull-out components are symmetrically arranged on the outer surfaces of the two semi-circular shells, with the radius of the semi-circular shell as the central axis. (This invention adds eight anti-pull-out components to the front and rear ends of the cylindrical shell in a bidirectional, symmetrical, and balanced manner, creating a strong connection between the PE pipe crack and the plug, making the PE pipe less prone to pull-out and leakage. Furthermore, the bidirectional compression prevents axial tension, displacement, and deformation, effectively solving the technical problem of cracks in PE pipes causing re-pulling and leakage due to unstable water pressure. This provides the repaired PE pipe fracture with anti-pull-out functionality, greatly improving repair quality, reducing the probability of re-pulling and leakage, and achieving long-term stable leak plugging, reducing the number of pipeline water outages. It is an ideal choice for pipeline repair equipment.)Similarly, this utility model is also suitable for pre-installation at the joint of newly connected PE pipes, which can effectively prevent pipe pull-out breakage and leakage, ensure smooth and safe transport of liquid in the pipe, greatly reduce the probability and cost of pipe repair, and has wide applicability and good industry prospects. The anti-pull-out component includes an anti-pull-out base with a truncated cone shape and a countersunk threaded hole (providing an installation base for anti-pull-out screws and sealing bolts), which is embedded in the lower end of the countersunk threaded hole and extends downward through the semi-circular shell before being rolled into the PE pipe by a self-tapping screw. The anti-pull-out screws on the pipe wall (ensure a reinforced connection between the area near the crack in the PE pipe and the casing of the plug, giving the broken part of the PE pipe after emergency repair an anti-pull-out function, thereby effectively solving the technical problem of cracks being pulled out and leaking again due to unstable water pressure inside the PE pipe, greatly improving the quality of emergency repair and reducing the probability of pipes being pulled out and leaking again), the sealing bolt installed at the upper end of the countersunk threaded hole, and the sealing ring gasket sandwiched between the nut end of the sealing bolt and the small end face of the anti-pull-out base (the sealing bolt and the sealing ring gasket work together to seal the anti-pull-out screws, which can effectively prevent leakage or leakage around the anti-pull-out screws).

[0007] The semi-circular shell described in this utility model is an overall semi-cylindrical cylinder. Its outer surface is semi-cylindrical, and its inner cavity surface is a stepped surface composed of two thick-walled sections at the ends and a thin-walled section in the middle. Two insert grooves are formed on the thick-walled sections at the ends of the inner cavity surface (for easy insertion). The cross-section of the insert groove is semi-circular, and its radius matches the radius of the semi-ring rubber seal (for easy insertion of the semi-ring rubber seal). Furthermore, the distance from the bottom of the insert groove to the outer surface of the PE pipe is less than the diameter of the semi-ring rubber seal (ensuring the semi-ring rubber seal can operate normally). It can maintain a certain elastic deformation to form a tight seal, ensuring that the installation of this utility model can effectively plug the broken parts of the PE pipe; the bottom of the anti-pull-out base is fixed to the outer surface of the middle thin-walled section of the semi-circular shell, and the angle between the central axis of the left and right anti-pull-out bases and the axis of symmetry is 45 degrees (in this way, the four anti-pull-out bases at the front and rear ends form a bidirectional compensating arrangement that is symmetrical in the circumferential direction, so that the force is balanced, and the bidirectional compensating will not produce axial tension, displacement, deformation and other phenomena).

[0008] The flange described in this utility model is a rectangular strip plate, which is vertically fixed to the outer surface of the opening end of the semi-circular shell, and the inner surface of the flange is flush with the opening end face of the semi-circular shell (for easy positioning and to facilitate the balanced compression of the axial sealing gasket). The length of the flange is equal to the length of the semi-circular shell.

[0009] The length of the axial sealing gasket in this invention is equal to the length of the semi-circular shell, and the width of the axial sealing gasket is equal to the difference between the outer diameter of the semi-circular shell and the outer diameter of the PE pipe, plus the width of the flange (in this way, the axial sealing gasket not only seals the flange connection, but also seals the cavity between the semi-circular shell and the PE pipe).

[0010] The design principle of this utility model is as follows:

[0011] This utility model is an improvement and upgrade of the currently used traditional leak-sealing device. It primarily addresses the problem that traditional leak-sealing devices, after installation, do not form a reinforced connection with the cracked area of ​​the PE pipe. Furthermore, the unstable water pressure within the PE pipe can lead to the crack being pulled out again and causing leakage. The new invention uses the traditional leak-sealing device as a base and adds eight anti-pull-out components in a symmetrical bidirectional feeding method at the front and rear ends of the overall shell. This creates a firm connection between the leak-sealing device and the area near the crack in the PE pipe, making it less prone to pull-out and leakage. The bidirectional feeding method also prevents axial tension, displacement, and deformation, effectively solving the technical problem of cracks being pulled out and causing leakage due to unstable water pressure within the PE pipe. This provides the repaired PE pipe fracture with anti-pull-out functionality, greatly improving repair quality, reducing the probability of re-pulling out and leakage, and achieving long-term stable leak sealing. It also reduces the number of water outages, making it an ideal choice for pipeline repair. Meanwhile, this invention effectively seals all gaps between the PE pipe and the invention itself through the cooperation of a semi-ring rubber sealing ring, axial sealing gasket, sealing ring gasket, and sealing bolts, achieving effective leak sealing. Furthermore, this invention adopts the flange-split connection structure of traditional leak sealers, making it easy and quick to install. Thus, simply by quickly and safely installing this invention at the broken part of the PE pipe, effective and long-term stable leak sealing can be achieved, improving the quality and efficiency of emergency repairs, reducing the number of water outages, shortening the duration of pipe outages, and minimizing the impact on residential water use. Similarly, this invention is also suitable for pre-installation at the joints of newly connected PE pipes, effectively preventing pipe pull-out breakage and leakage, ensuring smooth and safe transport of liquids within the pipe, greatly reducing the probability and cost of emergency repairs, and demonstrating wide applicability and promising industry prospects.

[0012] The beneficial technical effects of this utility model are as follows:

[0013] This invention, when quickly and safely installed at the fracture site of a PE pipe, effectively seals leaks, shortens water outage time, and reduces the impact on residential water supply. It also reinforces the connection between the leak-sealing device and the area near the PE pipe crack, effectively solving the technical problem of renewed leakage due to unstable water pressure within the PE pipe. This gives the repaired PE pipe fracture site an anti-pull-out function, greatly improving repair quality, reducing the probability of re-pulling outages, and achieving long-term stable leak sealing, thus reducing the frequency of water outages. It is an ideal choice for pipeline repair. Similarly, this invention is also suitable for pre-installation at the joints of newly connected PE pipes, effectively preventing pipe pull-out fractures and leaks, ensuring smooth and safe liquid transport within the pipe, greatly reducing the probability and cost of pipeline repairs, and demonstrating wide applicability and promising industry prospects. Attached Figure Description

[0014] Figure 1 is a structural schematic diagram and an installation and usage schematic diagram of this utility model.

[0015] Figure 2 is a partial sectional view and left view of AA in Figure 1.

[0016] Part number descriptions in the diagram: 1. Cylindrical cylinder, 1-1. Insert groove; 2. Semi-circular shell; 3. Flange; 4. Axial sealing gasket; 5. Fixing bolt; 6. Semi-ring rubber sealing ring; 7. Anti-pull-out assembly, 7-1. Anti-pull-out base, 7-1-1. Countersunk threaded hole; 7-2. Anti-pull-out screw; 7-3. Sealing bolt; 7-4. Sealing ring gasket; 8. PE pipe. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] As shown in Figures 1 and 2, this utility model of a bidirectional anti-pull-out pipe repair and leak-sealing device consists of two semi-circular shells 2 interlocked together, with an axial sealing gasket 4 sandwiched at the connection point, and connected by a flange 3 and fixing bolts 5 to form an integral cylindrical body 1 (this utility model is designed as a flange-connected split structure, which facilitates the quick and safe installation of this utility model on the broken part of the PE pipe 8, improving repair efficiency, shortening the pipe water outage time, and reducing the impact on residential water use; the axial sealing gasket 4 sandwiched at the flange connection point can seal the flange 3 connection point, effectively preventing leakage or leakage at the flange 3 connection point). Aging-resistant and corrosion-resistant semi-ring rubber sealing rings 6 are embedded in the mounting grooves 1-1 opened at both ends of the inner surface of the cylindrical body 1 (in order for this utility model to smoothly fit around the broken part of the PE pipe 8, the assembly relationship between this utility model and the PE pipe 8 is definitely a clearance fit, and a semi-ring rubber sealing ring is set between the inner surface of both ends of this utility model and the outer surface of the PE pipe). The sealing ring 6 can seal the joint surfaces at both ends, effectively plugging leaks, enabling rapid repairs, improving repair efficiency, shortening pipeline water outage time, and reducing the impact on residential water use. Four anti-pull-out components 7 are symmetrically arranged on the outer surfaces of the two semi-circular shells 2, with the radius of the semi-circular shell as the central axis. (This invention adds eight anti-pull-out components to the front and rear ends of the cylindrical shell 1 using a bidirectional feeding method that is symmetrical in all directions, ensuring a firm connection between the PE pipe crack area and the leak plug, making the PE pipe less prone to pull-out and leakage. Furthermore, the bidirectional feeding method does not generate axial tension, displacement, or deformation, effectively solving the technical problem of cracks causing further pull-out and leakage due to unstable water pressure within the PE pipe. This gives the repaired PE pipe 8 fractured area an anti-pull-out function, greatly improving repair quality, reducing the probability of further pipe pull-out and leakage, and achieving long-term stable leak plugging, reducing the number of pipeline water outages, making it an ideal choice for pipeline repair equipment.)Similarly, this utility model is also suitable for pre-installation at the joint of newly connected PE pipes, which can effectively prevent pipe pull-out breakage and leakage, ensure smooth and safe transportation of liquid in the pipe, greatly reduce the probability and cost of pipe repair, and has wide applicability and good industry prospects. The anti-pull-out component 7 includes an anti-pull-out base 7-1 with a truncated cone shape and a countersunk threaded hole 7-1-1 inside (providing an installation base for the anti-pull-out screw 7-2 and sealing bolt 7-3), which is embedded in the lower end of the countersunk threaded hole 7-1-1 and extends downward through the semi-circular shell and is then rolled into the PE pipe wall by a self-tapping screw. Screw 7-2 (to reinforce the connection between the cracked part of PE pipe 8 and the plugging device housing, so that the broken part of PE pipe 8 after emergency repair has the function of preventing pull-out, thereby effectively solving the technical problem of cracks being pulled out and leaking again due to unstable water pressure in PE pipe, greatly improving the quality of emergency repair and reducing the probability of pipe being pulled out and leaking again), sealing bolt 7-3 installed at the upper end of countersunk threaded hole 7-1-1, and sealing ring washer 7-4 sandwiched between the nut end of sealing bolt 7-3 and the small end face of anti-pull-out base 7-1 (the sealing bolt 7-3 and sealing ring washer 7-4 cooperate to seal the anti-pull-out screw 7-2, which can effectively prevent leakage or leakage around the anti-pull-out screw 7-2).

[0019] The semi-circular shell 2 described in this utility model is an overall semi-cylindrical cylinder. Its outer surface is semi-cylindrical, and its inner cavity surface is a stepped surface composed of two thick-walled sections at the ends and a thin-walled section in the middle. Two insert grooves 1-1 are both formed on the thick-walled sections at the ends of the inner cavity surface (to facilitate the insertion of the insert grooves 1-1). The cross-section of the insert groove 1-1 is semi-circular, and its radius matches the radius of the semi-annular rubber sealing ring 6 (to facilitate the insertion of the semi-annular rubber sealing ring 6). Furthermore, the distance from the bottom of the insert groove 1-1 to the outer surface of the PE pipe is less than the diameter of the semi-annular rubber sealing ring 6 (to ensure that the semi-annular rubber sealing ring 6 is in operation). The working state can maintain a certain elastic deformation to form a tight seal, ensuring that the installation of this utility model can effectively plug the broken parts of the PE pipe; the bottom of the anti-pull-out base 7-1 is fixed to the outer surface of the middle thin-walled section of the semi-circular shell 2, and the angle between the central axis of the left and right anti-pull-out bases 7-1 and the axis of symmetry is 45 degrees (in this way, the four anti-pull-out bases 7-1 at the front end and the rear end form a bidirectional compensating arrangement that is symmetrical in the circumferential direction, so that the force is balanced, and the bidirectional compensating will not produce axial tension, displacement, deformation and other phenomena).

[0020] In this utility model, the flange 3 is a rectangular strip plate, which is vertically fixed to the outer surface of the opening end of the semi-circular shell 2, and the inner surface of the flange 3 is flush with the opening end face of the semi-circular shell 2 (for easy positioning and to facilitate the balanced compression of the axial sealing gasket 4). The length of the flange 3 is equal to the length of the semi-circular shell 2.

[0021] In this invention, the length of the axial sealing gasket 4 is equal to the length of the semi-circular shell 2, and the width of the axial sealing gasket 4 is equal to the difference between the outer diameters of the semi-circular shell 2 and the PE pipe 8, plus the width of the flange 3 (in this way, the axial sealing gasket 4 not only seals the flange connection, but also seals the cavity between the semi-circular shell 2 and the PE pipe 8).

[0022] The specific usage of this utility model is as follows:

[0023] (I) Using this utility model to quickly repair PE pipes: First, four semi-circular rubber sealing rings 6 are respectively embedded into the embedding grooves 1-1 at the front and rear ends of the two semi-circular shells 2; then, the two semi-circular shells 2 of this utility model are fastened together at the broken or leaking parts of the PE pipe 8, and after the axial sealing gasket 4 is sandwiched at the fastening connection, the flange 3 and the fixing bolt 5 are used to connect and form an integral cylindrical body 1; then, anti-pull-out screws 7-2 are respectively embedded into the countersunk threaded holes 7-1-1 of the eight anti-pull-out bases 7-1, and the anti-pull-out screws 7-2 are rotated continuously so that the anti-pull-out screws 7-2 are embedded in the lower end of the countersunk threaded holes 7-1-1 and extend downward through the semi-circular shell and are rolled into the PE pipe wall by self-tapping screws; then, the sealing bolts 7-3 are respectively installed at the upper end of the countersunk threaded holes 7-1-1, and at the same time, a sealing ring gasket 7-4 is sandwiched between the nut end of the sealing bolt 7-3 and the small end face of the anti-pull-out base 7-1. This allows the invention to be quickly and safely installed on the broken part of the PE pipe 8. The semi-circular rubber sealing ring 6, axial sealing gasket 4, sealing ring gasket 7-4, and sealing bolt 7-3 work together to effectively seal all gaps between the PE pipe 8 and the invention, achieving effective leak sealing, shortening water outage time, and reducing the impact on residential water use. Simultaneously, the anti-pull-out screw 7-2 and anti-pull-out base 7-1 reinforce the connection between the area near the crack in the PE pipe and the leak-stopping device, effectively solving the technical problem of cracks causing re-pulling and leakage due to unstable water pressure within the PE pipe. This gives the repaired broken part of the PE pipe an anti-pull-out function, greatly improving repair quality, reducing the probability of re-pulling and leakage, and thus achieving long-term stable leak sealing, reducing the number of water outages. It is an ideal choice for pipeline repair equipment.

[0024] (ii) Pre-installation of this utility model at the joint of a newly connected PE pipe: Similarly, as with the above-mentioned operation of quickly repairing PE pipes, this utility model can also be pre-installed at the joint of a newly connected PE pipe 8. This can effectively prevent the pipe from being pulled apart, broken, or leaking, ensure the smooth and safe transport of liquid in the pipe, greatly reduce the probability and cost of pipe repair, and has wide applicability and good industry prospects.

Claims

1. A bidirectional anti-pull-out pipe repair and leak-sealing device, characterized in that: The emergency repair and sealing device consists of two semi-circular shells (2) interlocked and fitted with an axial sealing gasket (4) at the connection point, which are then connected by a flange (3) and fixing bolts (5) to form an integral cylindrical body (1). Aging-resistant and corrosion-resistant semi-ring rubber sealing rings (6) are embedded in the mounting grooves (1-1) opened at both ends of the inner surface of the cylindrical body (1). Four anti-pull-out components (7) are symmetrically arranged on the outer surfaces of the two semi-circular shells (2) in all directions, with the radius of the semi-circular shell as the central axis. The anti-pull-out assembly (7) includes an anti-pull-out base (7-1) with a truncated cone shape and a countersunk threaded hole (7-1-1) inside, an anti-pull-out screw (7-2) that is embedded in the lower end of the countersunk threaded hole (7-1-1) and extends downward through the semi-circular shell and is rolled into the PE pipe wall by a self-tapping screw, a sealing bolt (7-3) installed at the upper end of the countersunk threaded hole (7-1-1), and a sealing ring gasket (7-4) sandwiched between the nut end of the sealing bolt (7-3) and the small end face of the anti-pull-out base (7-1).

2. A bidirectional anti-pull-out pipe repair plug according to claim 1, characterized in that: The semi-circular shell (2) is a semi-cylindrical cylinder as a whole. The outer surface is semi-cylindrical, and the inner cavity surface is a stepped surface composed of two thick-walled sections at the ends and a thin-walled section in the middle. The two insert grooves (1-1) are opened at the thick-walled sections at the ends of the inner cavity surface. The cross-section of the insert groove (1-1) is semi-circular, and the radius matches the radius of the semi-ring rubber sealing ring (6). The distance from the bottom of the insert groove (1-1) to the outer surface of the PE pipe is less than the diameter of the semi-ring rubber sealing ring (6). The bottom of the anti-pull-out base (7-1) is fixed on the outer surface of the thin-walled section in the middle of the semi-circular shell (2). The angle between the central axis of the left and right anti-pull-out bases (7-1) and the axis of symmetry is 45 degrees.

3. A bidirectional anti-pull-out pipe repair plug according to claim 1, characterized in that: The flange (3) is a rectangular strip plate, which is vertically fixed to the outer surface of the opening end of the semi-circular shell (2), and the inner surface of the flange (3) is flush with the opening end face of the semi-circular shell (2). The length of the flange (3) is equal to the length of the semi-circular shell (2).

4. The bidirectional anti-pull-out pipe repair and sealing device according to claim 1, characterized in that: The length of the axial sealing gasket (4) is equal to the length of the semi-circular shell (2), and the width of the axial sealing gasket (4) is equal to the sum of the difference between the outer diameter of the semi-circular shell (2) and the outer diameter of the PE pipe (8) and the width of the flange (3).

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