A splicable pipe repair device and method of use thereof

Abstract

This invention discloses a splicable pipe repair device, comprising several saddle plates. Each saddle plate has an inner wall surface for contacting the outer wall of the pipe. Two protective sleeves are provided on each saddle plate, penetrating the saddle plate. Each protective sleeve contains a copper pillar. A labyrinthine filament groove is formed on the inner wall surface of the saddle plate, and a resistance wire is placed within the groove. One end of the resistance wire is connected to one copper pillar, and the other end is connected to another copper pillar. This invention allows for the repair of small scratches, cracks, or breaks using only a single saddle plate. For repairing large, long scratches, cracks, or breaks, multiple saddle plates can be spliced ​​together. Due to the arrangement of the resistance wires, the resistance wires can be distributed across the inner wall surface of the saddle plate to a large extent, increasing the melting area of ​​the saddle plate and thus the repair area of ​​the pipe.

Description

Technical Field

[0001] This invention relates to the field of pipe repair technology, and in particular to a splicable pipe repair device and its usage method. Background Technology

[0002] PE pipes come in many varieties and have different functions. One mainstream industrial application is as a gas and oil pipeline, such as the common use of PE pipes for transporting natural gas. During use, PE pipes can develop deep scratches, cracks, or damage due to impacts, vibrations, and aging, requiring replacement. However, replacement necessitates a partial shutdown of the gas pipeline, and the process is time-consuming and labor-intensive, ultimately impacting gas transmission operations.

[0003] Chinese utility model patent CN207514484U discloses a sealing saddle. When repairing PE pipes, a pre-sealing screw can be removed first. The tip of the pre-sealing screw is then aligned with the damaged area of ​​the PE pipe, and a screwdriver is used to screw the pre-sealing screw into the damaged area, thus achieving pre-sealing… This achieves two repair processes: pre-sealing and sealing welding, ensuring that the damaged area of ​​the PE pipe will no longer leak to the outside after repair. While it solves the problem of PE pipe repair, it still has some drawbacks in its implementation:

[0004] 1. Its repair scope is limited. When the scratches, cracks or damage on the pipe are long, multiple sealing saddles are needed for repair. The repair process is complicated, and each sealing saddle needs to be connected to an electrofusion welding machine, which consumes a lot of electricity.

[0005] 2. Since the sealing saddle is fixed to the pipe after use, its effective repair range is within the space enclosed by the resistance wire. Therefore, when repairing a pipe using multiple sealing saddles, the distance between adjacent pipes should be limited. Figure 1 The repair effect in area A was too poor. Summary of the Invention

[0006] The purpose of this invention is to solve at least one problem existing in the prior art, and to propose a splicable pipe repair device and its usage method. By using the splicable repair device to repair pipes, the repair range is expanded while ensuring the sealing of the pipes. It also has the advantages of simple structure and convenient use.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A splicable pipe repair device includes several saddle plates, each saddle plate having an inner wall surface for contacting the outer wall of the pipe. Two protective sleeves are provided on each saddle plate, penetrating the saddle plate. Each protective sleeve contains a copper pillar. A labyrinthine filament groove is formed on the inner wall surface of the saddle plate, and a resistance wire is placed within the filament groove. One end of the resistance wire is connected to one copper pillar, and the other end of the resistance wire is connected to another copper pillar.

[0009] As an improvement of the present invention, the shape of the resistance wire and the shape of the wire groove are both maze-shaped. In other words, the overall shape of the resistance wire and the wire groove is rectangular. The wire groove and the resistance wire are bent at least eight times, and the two ends of the wire groove and the bent resistance wire are close to the two ends of the saddle plate. Specifically, the two ends of the wire groove and the bent resistance wire are 0.3-1cm away from the outer edge of the saddle plate.

[0010] According to some embodiments of the present invention, the two protective sleeves are respectively located at both ends of the saddle plate, and correspondingly, the two copper pillars are also respectively located at both ends of the saddle plate. Thus, it can be seen that the two ends of the resistance wire are also respectively located at both ends of the saddle plate.

[0011] According to other embodiments of the present invention, the two protective sleeves are respectively located at the same end of the saddle plate, and correspondingly, the two copper pillars are also respectively located at the same end of the saddle plate. Thus, it can be known that the two ends of the resistance wire are also respectively located at the same end of the saddle plate.

[0012] Furthermore, based on the above scheme, the end of the resistance wire extends outward by 1-10cm.

[0013] Furthermore, based on the above scheme, a column head is provided on the outer wall of the saddle plate. The column head and the saddle plate are an integral structure, and the column head is solid.

[0014] According to some embodiments of the present invention, the wire grooves are evenly distributed on the inner wall surface of the saddle plate, and correspondingly, the resistance wires are also evenly distributed in the wire grooves, that is, the intervals between adjacent rows of resistance wires are equal.

[0015] According to other embodiments of the present invention, the fabric grooves are evenly distributed on both sides of the inner wall surface of the saddle plate, and correspondingly, the resistance wires are also distributed in the same way, that is, the middle part of the inner wall surface of the saddle plate is not provided with fabric grooves.

[0016] Building upon the above scheme, a further step is taken to provide pressure-boosting strips in the shape of square columns on both sides of the saddle plate, with the two pressure-boosting strips arranged in parallel.

[0017] Furthermore, based on the above solution, the pressure-boosting strip is provided with several connecting through holes.

[0018] Furthermore, based on the above scheme, one end of the saddle plate is provided with several positioning blocks, and the other end of the saddle plate is provided with several positioning grooves that cooperate with the positioning blocks.

[0019] Furthermore, the protective cover is equipped with a cap.

[0020] A method for using a splicable pipe repair device, wherein the specific steps for using the repair device alone are as follows:

[0021] S1. Positioning the saddle plate: Take out the saddle plate and cover the damaged area of ​​the pipe with it, making sure that the center of the inner wall of the saddle plate covers the damaged area of ​​the pipe as much as possible.

[0022] S2. Assembly of the fixing device: Take out the climbing strap and two U-bolts, and attach both ends of the climbing strap to the U-bolts respectively.

[0023] S3. Fixing the saddle plate: Pass the assembled gripping strap and U-bolts through the bottom of the pipe. Then, pass the two U-bolts through the connecting holes on both sides of the saddle plate. Then, use nuts to press and fix the U-bolts and the saddle plate so that the inner wall of the saddle plate is tightly attached to the pipe.

[0024] S4. For pipe repair, remove the cap and connect the two copper pillars to the electrofusion welding machine. When the electrofusion welding machine is working, the resistance wire is heated, causing part of the saddle plate to melt and part of the pipe near the saddle plate to melt. At the same time, pressure can be applied to the saddle plate to make it tightly adhere to the pipe, so that the pipe can be fused with the saddle plate.

[0025] A method for using a splicable pipe repair device, and a method for assembling multiple repair devices, are described below:

[0026] S1. Connecting the saddle plates: Take out several saddle plates and expose the resistance wires. Then connect one resistance wire end of one saddle plate to one resistance wire end of another saddle plate. Then insert the positioning block of one saddle plate into the positioning groove of another saddle plate. Connect the remaining saddle plates in sequence as required.

[0027] S2. Positioning of the saddle plate: Take out the connected saddle plate and cover the damaged part of the pipe with the saddle plate, trying to cover the damaged part of the pipe with the center of the inner wall of the saddle plate as much as possible.

[0028] S3. Assembly of the fixing device: Take out the climbing strap and two U-bolts, and attach the two ends of the climbing strap to the U-bolts respectively;

[0029] S4. Fixing the saddle plate: Pass the assembled gripping strap and U-bolts through the bottom of the pipe. Then, pass the two U-bolts through the connecting holes on both sides of the saddle plate. Then, use nuts to press and fix the U-bolts and the saddle plate so that the inner wall of the saddle plate is tightly attached to the pipe.

[0030] S5. For pipe repair, remove the cap and connect the two copper pillars to the electrofusion welding machine (note that the two copper pillars at the two ends should be connected at this time). When the electrofusion welding machine is working, the resistance wire is heated, causing part of the saddle plate to melt and part of the pipe near the saddle plate to melt. At the same time, pressure can be applied to the saddle plate to make it tightly adhere to the pipe, so that the pipe can be fused with the saddle plate.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. When repairing small scratches, cracks, or damage, this invention only requires a single saddle plate to complete the repair of the pipe; when repairing long scratches, cracks, or damage, multiple saddle plates can be connected together by splicing to expand the repair length and area, while also enhancing the sealing at the edges of multiple saddle plates; due to the arrangement of the resistance wires, the resistance wires can be distributed on the inner wall surface of the saddle plate to a large extent, increasing the melting area of ​​the saddle plate and increasing the repair area of ​​the pipe.

[0033] 2. The present invention has a reasonable structure and can quickly seal and repair damaged pipes. The pipes do not need to be shut off during the repair process. The repair operation is relatively simple and the repair effect is good. Attached Figure Description

[0034] Figure 1 It is a pipe repair device in the existing technology;

[0035] Figure 2 This is a perspective view of Embodiment 1 of the present invention;

[0036] Figure 3 This is a cross-sectional view of Embodiment 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the bottom structure of Embodiment 1 of the present invention;

[0038] Figure 5 This is a three-dimensional view of the spliced ​​state of Embodiment 1 of the present invention;

[0039] Figure 6 This is a schematic diagram of the bottom structure in the spliced ​​state of Embodiment 1 of the present invention;

[0040] Figure 7 This is a schematic diagram of the bottom structure of Embodiment 2 of the present invention;

[0041] Figure 8 This is a schematic diagram of the bottom structure in the spliced ​​state of Embodiment 2 of the present invention;

[0042] Figure 9 This is a perspective view of Embodiment 3 of the present invention;

[0043] Figure 10This is a schematic diagram of the bottom structure of Embodiment 3 of the present invention;

[0044] Figure 11 This is a three-dimensional view of the spliced ​​state of Embodiment 3 of the present invention;

[0045] Figure 12 This is a schematic diagram of the bottom structure in the spliced ​​state of Embodiment 3 of the present invention;

[0046] Figure 13 This is a schematic diagram of the bottom structure of Embodiment 4 of the present invention;

[0047] Figure 14 This is a schematic diagram of the bottom structure in the spliced ​​state of Embodiment 4 of the present invention;

[0048] Figure 15 This is a schematic diagram illustrating the working principle of the present invention.

[0049] In the diagram: 1—Saddle plate, 2—Protective sleeve, 3—Copper column, 4—Resistance wire, 5—Column head, 6—Pressure-boosting strip, 7—Connecting through hole, 8—Positioning block, 9—Positioning groove, 10—Cap, 11—Climbing strap, 12—U-bolt. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0051] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The words “a” or “one” and similar terms used in this specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0052] Example 1:

[0053] like Figure 1-6 As shown, a splicable pipe repair device includes several saddle plates 1, each made of PE material. Each saddle plate 1 has an inner wall surface for contacting the outer wall of the pipe. Two protective sleeves 2 are provided on each saddle plate 1, penetrating the saddle plate 1. Each protective sleeve 2 contains a copper pillar 3. A labyrinthine cloth groove is formed on the inner wall surface of the saddle plate 1, and a resistance wire 4 is placed within the cloth groove. One end of the resistance wire 4 is connected to one copper pillar 3, and the other end of the resistance wire 4 is connected to another copper pillar 3.

[0054] In this embodiment, the shape of the resistance wire 4 is the same as that of the wire groove, both being labyrinthine. The overall shape of the resistance wire 4 and the wire groove is rectangular. The wire groove and the resistance wire 4 are bent at least eight times, and the ends of the wire groove and the bent resistance wire 4 are close to the ends of the saddle plate 1. Specifically, the ends of the wire groove and the bent resistance wire 4 are 0.3-1cm from the outer edge of the saddle plate 1, with an optimal value of 0.5cm. The labyrinthine, repeatedly coiled and bent resistance wire is designed to maximize the area covered by the resistance wire 4, i.e., to increase the area for pipe repair. To ensure the repair effect at the connection between saddle plates 1 during splicing and use, the resistance wire 4 is positioned as close as possible to both ends of the saddle plate 1. Since the distance from the resistance wire 4 to the ends of the saddle plate 1 is 0.5cm, when repairing the pipe, even areas between the two saddle plates 1 where there is no resistance wire 4 will be melted by the resistance wire 4, ensuring the sealing of the repaired area.

[0055] In this embodiment, the two protective sleeves 2 are located at both ends of the saddle plate 1, and correspondingly, the two copper pillars 3 are also located at both ends of the saddle plate 1. Thus, the two ends of the resistance wire 4 are also located at both ends of the saddle plate 1.

[0056] In this embodiment, the end of the resistance wire 4 extends outward by 1-10cm. When connecting the resistance wires 4 of different saddle plates 1, the two resistance wires can be directly wound together or a buckle can be set at one end of the resistance wire 4 and a slot can be set at the other end of the resistance wire 4. The resistance wires 4 can be connected by plugging them in.

[0057] In this embodiment, a column head 5 is provided on the outer wall surface of the saddle plate 1. The column head 5 and the saddle plate 1 are an integral structure, and the column head 5 is solid. The design of the column head 5 makes it convenient to remove the saddle plate 1.

[0058] In this embodiment, the wire grooves are evenly distributed on the inner wall surface of the saddle plate 1, and correspondingly, the resistance wires 4 are also evenly distributed in the wire grooves, that is, the adjacent rows of resistance wires 4 are spaced equally.

[0059] To ensure a tight fit between the saddle plate 1 and the pipe, square column-shaped pressure-supporting strips 6 are provided on both sides of the saddle plate 1. The two pressure-supporting strips 6 are arranged in parallel, and several connecting through holes 7 are provided on the pressure-supporting strips 6. When the saddle plate 1 is fused with the pipe, it is necessary to press the saddle plate 1 tightly onto the pipe. The saddle plate 1 itself has an irregular shape, which is not conducive to the external mechanism to apply stable pressure to it (the saddle plate 1 has many curved surfaces, which is not conducive to applying force), while the pressure-supporting strips 6 are a good pressure-bearing position.

[0060] In this embodiment, one end of the saddle plate 1 is provided with a plurality of positioning blocks 8, and the other end of the saddle plate 1 is provided with a plurality of positioning grooves 9 that cooperate with the positioning blocks 8. The positioning blocks 8 and the positioning grooves 9 cooperate with each other to limit the position, which is beneficial for splicing multiple saddle plates 1.

[0061] In this embodiment, the protective sleeve 2 is provided with a cap 10, which can protect the copper pillar 3 inside the protective sleeve 2, prevent dust and moisture from entering the protective sleeve 2, and avoid the copper pillar 3 from rusting.

[0062] Example 2:

[0063] like Figure 7-8 As shown, the difference between this embodiment and embodiment 1 is that the middle part of the inner wall of the saddle plate 1 is not provided with a wire groove, that is, the resistance wire 4 is not provided in the middle position of the saddle plate 1. The rest is the same as that in embodiment 1.

[0064] Since the resistance wire 4 can melt a portion of the saddle plate 1 and the pipe that are close to it, the saddle plate 1 and the pipe can be bonded together after melting. Therefore, it is only necessary to align the middle position of the saddle plate 1 without the resistance wire 4 with the scratches, cracks or damage of the pipe. This layout reduces the amount of resistance wire 4 without affecting the quality of pipe repair.

[0065] Example 3:

[0066] like Figure 9-12 As shown, the difference between this embodiment and embodiment 1 is that the two protective sleeves 2 are located at the same end of the saddle plate 1, and correspondingly, the two copper pillars 3 are also located at the same end of the saddle plate 1. Thus, the two ends of the resistance wire 4 are also located at the same end of the saddle plate 1. The rest is the same as in embodiment 1.

[0067] In this embodiment, after splicing, the resistance wires 4 on multiple saddle plates 1 can form a complete rectangle, that is, the scratches, cracks or damages of the pipe are completely surrounded by the resistance wires 4. This layout increases the quality of pipe repair.

[0068] Example 4:

[0069] like Figure 13-14 As shown, the middle part of the inner wall of the saddle plate 1 does not have a wire groove, that is, the resistance wire 4 is not set in the middle position of the saddle plate 1. The rest is the same as in embodiment 3.

[0070] Since the resistance wire 4 can melt a portion of the saddle plate 1 and the pipe that are close to it, the saddle plate 1 and the pipe can be bonded together after melting. Therefore, it is only necessary to align the middle position of the saddle plate 1 without the resistance wire 4 with the scratches, cracks or damage of the pipe. This layout reduces the amount of resistance wire 4 without affecting the quality of pipe repair.

[0071] Example 5:

[0072] like Figure 15 As shown, the individual uses of Examples 1, 2, 3, and 4 are illustrated with the following specific steps:

[0073] S1. Positioning of saddle plate 1: Take out saddle plate 1 and cover the damaged part of the pipe with saddle plate 1, trying to cover the damaged part of the pipe with the center of the inner wall of saddle plate 1 as much as possible.

[0074] S2. Assembly of the fixing device: Take out the climbing strap 11 and two U-bolts 12, and attach both ends of the climbing strap 11 to the U-bolts 12 respectively.

[0075] S3. Fixing the saddle plate 1: Pass the assembled gripping strap 11 and U-bolts 12 through the bottom of the pipe. Then, pass the two U-bolts 12 through the connecting through holes 7 on both sides of the saddle plate 1. Then, use nuts to press and fix the U-bolts 12 and the saddle plate 1 so that the inner wall of the saddle plate 1 is in close contact with the pipe.

[0076] S4. Repairing the pipe: Remove the cap 10, connect the two copper pillars 3 to the electrofusion welding machine, and the electrofusion welding machine will work. The resistance wire 4 will be heated, causing part of the saddle plate 1 to melt and part of the pipe near the saddle plate 1 to melt. At the same time, pressure can be applied to the saddle plate 1 to make the saddle plate 1 tightly adhere to the pipe, so that the pipe can be fused with the saddle plate 1.

[0077] Example 6:

[0078] like Figure 15 As shown, the splicing and application of Examples 1, 2, 3, and 4 follow the specific steps as follows:

[0079] S1. Connection of saddle plate 1: Take out several saddle plates 1, expose the resistance wire 4, then connect one end of the resistance wire 4 of one saddle plate 1 to one end of the resistance wire 4 of another saddle plate 1, then insert the positioning block 8 of one saddle plate 1 into the positioning groove 9 of another saddle plate 1, and connect the remaining saddle plates 1 in sequence as required.

[0080] S2. Positioning of saddle plate 1: Take out the connected saddle plate 1 and cover the damaged part of the pipe with saddle plate 1, trying to cover the damaged part of the pipe with the center of the inner wall of saddle plate 1 as much as possible.

[0081] S3. Assembly of the fixing device: Take out the climbing strap 11 and two U-bolts 12, and attach the two ends of the climbing strap 11 to the U-bolts 12 respectively;

[0082] S4. Fixing the saddle plate 1: Pass the assembled gripping strap 11 and U-bolts 12 through the bottom of the pipe. Then, pass the two U-bolts 12 through the connecting through holes 7 on both sides of the saddle plate 1. Then, use nuts to press and fix the U-bolts 12 and the saddle plate 1 so that the inner wall of the saddle plate 1 is in close contact with the pipe.

[0083] S5. Repairing the pipe: Remove the cap 10 and connect the two copper pillars 3 to the electrofusion welding machine (note that the two copper pillars 3 at the two ends should be connected at this time). When the electrofusion welding machine is working, the resistance wire 4 is heated, causing part of the saddle plate 1 to melt and part of the pipe near the saddle plate 1 to melt. At the same time, pressure can be applied to the saddle plate 1 to make the saddle plate 1 tightly adhere to the pipe, so that the pipe can be fused with the saddle plate 1.

[0084] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A splicable pipe repair device, comprising a plurality of saddle plates, characterized in that, Two protective sleeves are provided on the saddle plate, and the protective sleeves penetrate the saddle plate. Each protective sleeve is provided with a copper pillar. A labyrinth-shaped cloth groove is opened on the inner wall of the saddle plate. A resistance wire is provided in the cloth groove. One end of the resistance wire is connected to a copper pillar, and the other end of the resistance wire is connected to another copper pillar. The shape of the resistance wire is the same as that of the wire groove, both being labyrinthine. The wire groove and the resistance wire are bent at least eight times, and the two ends of the wire groove and the bent resistance wire are close to the two ends of the saddle plate. The two ends of the wire groove and the bent resistance wire are 0.3-1cm away from the outer edge of the saddle plate. The resistance wire extends outward by 1-10cm. When connecting resistance wires of different saddle plates, the two resistance wires can be directly wound together or a buckle can be set at one end of the resistance wire and a slot can be set at the other end of the resistance wire to connect the resistance wires by plugging them in. The two protective sleeves are located at the same end of the saddle plate, the two copper pillars are also located at the same end of the saddle plate, and the two ends of the resistance wire are also located at the same end of the saddle plate. The resistance wires on multiple saddle plates can form a complete rectangle, and the scratches, cracks or damages of the pipe are completely surrounded by the resistance wires. This layout increases the quality of pipe repair. A column head is provided on the outer wall of the saddle plate. The column head and the saddle plate are an integral structure, and the column head is solid. The saddle plate is provided with square column-shaped pressure strips on both sides, and the two pressure strips are arranged in parallel. The pressure strips are provided with several connecting through holes. The saddle plate has several positioning blocks at one end and several positioning grooves at the other end that cooperate with the positioning blocks.

2. The splicable pipe repair device according to claim 1, characterized in that, The protective cover is equipped with a cap.

3. A method for using a splicable pipe repair device, characterized in that, The method for assembling multiple repair devices using the splicable pipe repair device as described in claim 2 includes the following specific steps: S1. Connecting the saddle plates: Take out several saddle plates and expose the resistance wires. Then connect one resistance wire end of one saddle plate to one resistance wire end of another saddle plate. Then insert the positioning block of one saddle plate into the positioning groove of another saddle plate. Connect the remaining saddle plates in sequence as required. S2. Positioning of the saddle plate: Take out the connected saddle plate and cover the damaged part of the pipe with the saddle plate, trying to cover the damaged part of the pipe with the center of the inner wall of the saddle plate as much as possible. S3. Assembly of the fixing device: Take out the climbing strap and two U-bolts, and attach the two ends of the climbing strap to the U-bolts respectively; S4. Fixing the saddle plate: Pass the assembled gripping strap and U-bolts through the bottom of the pipe. Then, pass the two U-bolts through the connecting holes on both sides of the saddle plate. Then, use nuts to press and fix the U-bolts and the saddle plate so that the inner wall of the saddle plate is tightly attached to the pipe. S5. For pipe repair, remove the cap and connect the two copper pillars to the electrofusion welding machine. When the electrofusion welding machine is working, the resistance wire is heated, causing part of the saddle plate to melt and part of the pipe near the saddle plate to melt. At the same time, pressure can be applied to the saddle plate to make it tightly adhere to the pipe, so that the pipe can be fused with the saddle plate.

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