Self-anchored ductile cast iron pipe fast repair connecting pipe fitting

Abstract

The utility model provides a kind of self-anchored ductile iron pipe quick repair connecting pipe fittings, belong to pipeline maintenance technical field, including pipe body, it is the cylindrical structure of circular annular section, its inner diameter is greater than the diameter of pipe to be repaired;Two annular rubber rings, the opposite sides of pipe body are equipped with socket, and the end of socket section larger is located at the end away from pipe body, two annular rubber rings can be placed into corresponding socket respectively;Two compression rings, each compression ring can be fixed in socket part for extruding rubber ring to the inside of pipe body;Two groups of self-anchored parts, each group of self-anchored parts is set on corresponding rubber ring, each group of self-anchored parts includes several self-anchored steel teeth set on rubber ring;The utility model can be convenient for repairing pipe fitting, and self-anchored can be carried out to repaired pipeline, and then the strength of pipeline is guaranteed not to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance equipment technology, specifically to a self-anchoring ductile iron pipe quick repair connection fitting. Background Technology

[0002] With the continuous advancement of urban infrastructure construction, ductile iron pipes are increasingly widely used in water supply networks due to their excellent mechanical properties and corrosion resistance. In particular, the emergence of self-anchored ductile iron pipes, through their unique design, enables the installation of pipeline systems without supports, simplifies the construction process, and reduces project costs. Therefore, they have been widely used in long-distance water transmission, urban water supply, and drainage systems.

[0003] However, in the actual operation of the pipeline network, ductile iron pipes occasionally leak due to factors such as geological changes, external forces, or material aging, affecting water supply safety and normal social order. For leaks in ductile iron pipes with ordinary joints, the traditional repair method is usually to cut off the leaking section and connect it with two sockets and a section of intact double-inserted ductile iron pipe for repair. Although this method is mature and reliable, it faces a significant problem when applied to self-anchoring joint ductile iron pipes: conventional repair methods cannot restore or maintain the original self-anchoring function of that section of pipeline.

[0004] Self-anchoring is a key characteristic of self-anchored ductile iron pipes. Through a special interface design, it automatically locks itself when the pipe is subjected to axial tensile force, preventing pipe disconnection and ensuring the overall stability and safety of the pipeline system. Damaging this characteristic during maintenance may lead to safety hazards in the subsequent operation of the repaired pipeline, especially in areas with complex geological conditions or those subjected to large dynamic loads, where the risks are more pronounced. Utility Model Content

[0005] In view of this, the present invention provides a self-anchoring ductile iron pipe quick repair connection fitting. The present invention can facilitate the repair of the fitting and can self-anchor the repaired pipe, thereby ensuring that the strength of the pipe is not damaged.

[0006] To solve the above-mentioned technical problems, this utility model provides a self-anchoring ductile iron pipe quick repair connection fitting, including a pipe body, which is a cylindrical structure with a circular cross-section. Its inner diameter is larger than the diameter of the pipe to be repaired, and it can slide outside the pipe to be repaired. The pipe body can be placed between the end of the steel pipe to be repaired and the end of the supplementary pipe to provide support, thereby preventing the supplementary pipe from falling downward or tilting.

[0007] Two annular rubber rings are provided with sockets on opposite sides of the pipe body. The sockets are circular funnel-shaped structures on the pipe body, with the larger end of the socket located away from the pipe body. The two annular rubber rings can be placed into their respective sockets, which provide space and support for the rubber rings.

[0008] Two pressure rings, each of which can be fixed at the socket to squeeze the rubber ring into the pipe body, thereby maintaining a seal between the pipe body and the external repair fitting and preventing the rubber ring from falling out of the socket.

[0009] Two sets of self-anchoring components are provided, each set of which is installed on a corresponding rubber ring. Each set of self-anchoring components includes several self-anchoring steel teeth installed on the rubber ring. The end of the self-anchoring steel teeth near the outer wall of the pipe to be repaired has a tapered fitting section. This fitting section is arranged at an angle, with the angle deflecting from the end of the pipe towards the middle of the pipe. After the pressure ring fixes the position of the rubber ring, the self-anchoring component can complete the anchoring of the pipe.

[0010] Each set of self-anchoring components consists of multiple self-anchoring steel teeth set on a rubber ring. These multiple self-anchoring steel teeth are arranged in a ring, resulting in a better and more stable anchoring effect.

[0011] Each rubber ring has a beveled outer wall that fits snugly against the inner wall of the socket, resulting in a better seal and preventing the rubber ring from becoming misaligned.

[0012] The pressure ring and the socket are connected by multiple bolts.

[0013] The pipe body is also equipped with guide components, which facilitate the support of the pipe body. Concrete can be poured into the pipe body to provide support.

[0014] The guide component includes a guide ring disposed on the outer wall of the tube body.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Restore self-anchoring function to ensure pipeline safety: Self-anchoring components consist of several self-anchoring teeth with tapered interlocking sections. These teeth make tight contact with and embed into the outer wall of the pipe to be repaired when the pressure ring compresses the rubber ring. When the pipeline is subjected to axial tensile force, the interlocking sections of the self-anchoring teeth effectively prevent the pipeline from disengaging, thereby restoring and maintaining the self-anchoring function of the repaired pipe section. This significantly improves the overall stability and safety of the pipeline after repair, especially in areas with complex geological conditions or subjected to large dynamic loads, where its advantages are even more pronounced.

[0016] 2. Excellent sealing performance, preventing secondary leakage: The annular rubber ring is designed with a beveled structure, fitting tightly against the inner wall of the socket. Under the compression of the pressure ring, the rubber ring deforms, filling the tiny gaps between the pipe body and the fitting to be repaired, forming an effective sealing barrier. This sealing method can adapt to the maintenance needs of pipe fittings of different diameters, effectively preventing secondary leakage after maintenance and ensuring the continuity and stability of the water supply system.

[0017] 3. Easy installation, improving construction efficiency: The pipe body is designed as a cylindrical structure with a circular cross-section, and its inner diameter is slightly larger than the diameter of the pipe fitting to be repaired. This allows the pipe body to slide freely outside the fitting, facilitating quick positioning and installation. Simultaneously, the pressure ring and socket are connected by bolts, making the installation process simple and quick, requiring no complex construction equipment or processes, significantly shortening the maintenance cycle and reducing construction costs.

[0018] 4. Stable structure and strong adaptability: This invention incorporates guide components, such as guide rings, into the pipe body. These guide components not only provide additional support points for the pipe body, enhancing its overall rigidity, but also facilitate the pouring of concrete and other fixing materials onto the pipe body, further improving its stability. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a self-anchoring ductile iron pipe quick repair connection fitting according to the present invention; Figure 2 This is a schematic diagram of the structure of the rubber ring of this utility model; Figure 3 This is a schematic diagram of the structure of the pipeline before repair according to this utility model; Figure 4 This is a schematic diagram of the structure after pipeline repair according to this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Socket; 2. Pipe body; 3. Guide ring; 4. Pressure ring; 5. Rubber ring; 6. Bolt; 7. Self-anchoring component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] This embodiment provides a self-anchoring ductile iron pipe quick repair connection fitting, such as... Figure 1-2As shown: The tube body 2 includes a cylindrical structure with two through-holes. The inner diameter of the tube body 2 is slightly larger than the outer diameter of the fitting to be repaired, allowing the tube body 2 to slide on the outside of the fitting. Both ends of the tube body have funnel-shaped sockets 1, with one end having a larger cross-section and the other a smaller cross-section. The smaller cross-section end is fixedly connected to the end of the tube body 2. Each socket 1 contains a circular rubber ring 5, and a pressure ring 4 is provided corresponding to the rubber ring 5. The pressure ring 4 can be fixed... At the end of the socket 1, the pressure ring 4 can push the rubber ring 5 towards the pipe body 2 when it is fixed, until the rubber ring 5 is gradually squeezed towards the outer wall of the pipe to be repaired along the inclined surface of the inner wall of the socket 1 until the inner diameter of the rubber ring 5 touches the outer wall of the pipe to be repaired. Then the position of the pressure ring 4 is fixed to prevent the rubber ring 5 from resetting. In this way, the rubber ring 5 can keep the pipe body 2 and the pipe to be repaired sealed, thereby ensuring that water and debris from the outside will not enter the pipeline system after repair, and the materials in the pipeline system will not leak out.

[0023] It is worth mentioning that, corresponding to the rubber ring 5, there are also two sets of self-anchoring parts 7, such as... Figure 2 As shown: Each set of self-anchoring parts 7 is set on the corresponding rubber ring 5. The self-anchoring part 7 is a self-anchoring steel tooth set in the inner ring of the rubber ring 5. The end of the self-anchoring steel tooth near the outer wall of the pipe to be repaired has a tapered fitting section. The fitting section is arranged at an angle, with the angle deviating from the end of the pipe body 2 towards the middle of the pipe body 2. The fitting sections of the two sets of self-anchoring steel teeth are arranged symmetrically along the middle of the pipe body 2. That is, when the pressure ring 4 gradually squeezes the rubber ring 5 into the socket 1, it can not only squeeze the rubber ring 5 onto the outer wall of the pipe to be repaired, but also insert the fitting section of the self-anchoring steel tooth into the outer wall of the pipe to be repaired or the supplementary pipe. In this way, when the pipe is stretched to one side after repair, the self-anchoring part 7 on the other side can anchor the pipe, thereby preventing the pipe to be repaired from falling off from the supplementary pipe.

[0024] Preferably, the outer surface of each rubber ring 5 is a beveled structure, which can fit against the inner wall of the socket 1. This makes the rubber ring 5 more stable during the compression and movement process, thus preventing the rubber ring 5 from becoming skewed after compression, thereby ensuring the sealing effect between the socket and the pipe to be repaired.

[0025] Specifically, each set of self-anchoring components 7 includes multiple self-anchoring steel teeth, which are arranged in a ring array on the rubber ring 5. This allows the anchoring points to be more uniform after the interlocking section on the self-anchoring steel teeth is inserted into the pipe to be repaired, thus making the anchoring effect more stable.

[0026] Furthermore, both the socket 1 and the pressure ring 4 are provided with multiple perforations, which are arranged in a ring array along the axis of the pipe body 2. Bolts 6 are inserted between each group of perforations. The bolts 6 can be used to fix the position of the pressure ring 4 through the socket 1, thereby ensuring that the rubber ring 5 will not fall out of the socket 1.

[0027] Furthermore, the pressure ring 4 and the socket 1 can be connected by threads, which means that the pressure ring 4 can be in a vertical position to squeeze the rubber ring 5.

[0028] Furthermore, the pipe body 2 is also equipped with a guide component, which facilitates the support of the pipe body 2. Specifically, during implementation, the guide component can be a guide ring 3 set on the outer wall of the pipe body 2. The guide ring 3 and the pipe body 2 are located on the same axis. After the repair of the pipe body 2 is completed, concrete material is poured towards the guide ring 3. The concrete can then be bonded to the guide ring 3, thereby providing support for the pipe body 2 through the concrete, and further preventing the pipe repair area from falling downwards.

[0029] Working principle: When repairing the pipeline, first clean out the pipeline at the designated location, then vertically cut out the damaged section of the pipeline. Next, place the tooling of this application on both sections of the pipe to be repaired. Finally, place a supplementary pipe fitting between the two sections of the pipe to be repaired. Then slide the two toolings so that each tooling is positioned between the supplementary pipe fitting and the supplementary pipe fitting. Then, place a rubber ring 5 in each socket 1, and make the inclined structure on the outer wall of the rubber ring 5 fit against the inner wall of the socket 1. Then, squeeze the rubber ring 5 into the socket 1 through the pressure ring 4. At the same time, the self-anchoring part 7 can anchor the pipe to be repaired and the supplementary pipe fitting. Then, fix the pressure ring 4 with bolts 6 to prevent the rubber ring 5 from resetting. Finally, pour concrete into the guide part. After the concrete solidifies, the pipeline repair is completed, and the pipeline can be reburied.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A self-anchoring ductile iron pipe quick-repair connection fitting, characterized in that, include: The pipe body (2) is a cylindrical structure with a circular cross-section. Its inner diameter is larger than the diameter of the pipe to be repaired. It can slide outside the pipe to be repaired. The pipe body (2) can be placed between the end of the steel pipe to be repaired and the end of the supplementary pipe to provide support for it. Two annular rubber rings (5) are provided with sockets (1) on opposite sides of the pipe body (2). The sockets (1) are circular funnel-shaped structures on the pipe body (2), and the end with the larger cross section of the socket (1) is located away from the pipe body (2). The two annular rubber rings (5) can be placed into the corresponding sockets (1) respectively. Two pressure rings (4), each of which can be fixed at the socket (1) to squeeze the rubber ring (5) into the pipe body (2) so as to keep the pipe body (2) sealed with the outer repair fitting; Two sets of self-anchoring parts (7), each set of self-anchoring parts (7) is set on the corresponding rubber ring (5), each set of self-anchoring parts (7) includes several self-anchoring steel teeth set on the rubber ring (5), the end of the self-anchoring steel teeth near the outer wall of the pipe to be repaired has a tapered fitting section, the fitting section is arranged at an angle, the angle is biased from the end of the pipe body (2) toward the middle of the pipe body (2).

2. The self-anchoring ductile iron pipe quick repair connection fitting as described in claim 1, characterized in that, Each set of self-anchoring components (7) consists of multiple self-anchoring steel teeth set on the rubber ring (5), and the multiple self-anchoring steel teeth are arranged in a ring.

3. The self-anchoring ductile iron pipe quick repair connection fitting as described in claim 2, characterized in that, The outer wall of each rubber ring (5) is a sloping structure, which can fit against the inner wall of the socket (1).

4. A self-anchoring ductile iron pipe quick repair connection fitting as described in any one of claims 1-3, characterized in that, The pressure ring (4) is connected to the socket (1) by a plurality of bolts (6).

5. A self-anchoring ductile iron pipe quick repair connection fitting as described in any one of claims 1-3, characterized in that, The tube body (2) is also provided with a guide, which facilitates the support of the tube body (2).

6. The self-anchoring ductile iron pipe quick repair connection fitting as described in claim 5, characterized in that, The guide includes a guide ring (3) disposed on the outer wall of the tube body (2).

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