Pipe structure and method for repairing a concrete water supply line

Abstract

The application provides a pipeline structure and a method for repairing a concrete water supply pipeline. The pipeline structure is used for replacing a damaged concrete water supply pipeline. The damaged concrete water supply pipeline comprises a main body and a first socket arranged at a first end of the main body. The first socket is connected with a spigot of a first water supply pipeline. A second end of the main body is connected with a second socket of a second water supply pipeline. The pipeline structure comprises a pipeline main body, a first joint arranged at a first end of the pipeline main body and connected with the spigot of the first water supply pipeline, and a second joint arranged at a second end of the pipeline main body and connected with the second socket. The technical scheme of the application can effectively solve the problem that it is difficult to replace a whole reinforced concrete pipeline in the related art.

Description

Technical Field

[0001] This invention relates to the field of water supply pipeline repair, and more specifically, to a pipeline structure and a method for repairing concrete water supply pipelines. Background Technology

[0002] Urban municipal water supply networks are pressure pipelines, with water supply pressure generally ranging from 0.24 to 0.4 MPa. In the early days, water supply network pipes were generally made of reinforced concrete pipes, gray iron pipes, carbon steel pipes, etc. As the urban area continues to expand and residents have higher and higher requirements for water supply safety, reinforced concrete pipes, gray iron pipes, etc. have been gradually phased out and replaced by new water supply pipelines such as ductile iron pipes, composite steel pipes, and PE pipes.

[0003] Currently, municipal pipelines in most old urban areas across the country still primarily consist of reinforced concrete pipes, gray iron pipes, and carbon steel pipes. Reinforced concrete pipes, in particular, have undergone severe aging due to their long service life (approximately 30 years), resulting in significantly reduced pressure resistance. They are prone to bursting after large fluctuations in water supply network pressure, and frequent bursts greatly reduce water supply reliability and disrupt normal water supply. If a large area of ​​an aging reinforced concrete water supply pipe is damaged, the entire pipe must be replaced. Furthermore, with continuous urban development, construction work on municipal roads, underground passages, and other municipal facilities often intersects with reinforced concrete pipelines. When relocation or rerouting of reinforced concrete pipelines is necessary, the entire reinforced concrete pipe must also be removed.

[0004] Because reinforced concrete pipes are formed by interlocking individual reinforced concrete pipes, and reinforced concrete pipes lack flexibility, it is impossible to replace an entire pipe using a single reinforced concrete pipe of the same specification. Currently, there are no ready-made pipe fittings on the market that allow for the rapid replacement of entire reinforced concrete pipes. Summary of the Invention

[0005] The main objective of this invention is to provide a method for repairing pipe structures and concrete water supply pipelines, in order to solve the problem in related technologies where it is difficult to replace an entire reinforced concrete pipe.

[0006] To achieve the above objectives, according to one aspect of the present invention, a pipe structure is provided for replacing a damaged concrete water supply pipe. The damaged concrete water supply pipe includes a main body and a first socket disposed at a first end of the main body, the first socket being connected to the spigot of a first water supply pipe, and a second end of the main body being connected to a second socket of a second water supply pipe. The pipe structure includes: a pipe body; a first connector disposed at the first end of the pipe body and inserted into the spigot of the first water supply pipe; and a second connector disposed at the second end of the pipe body and inserted into the second socket.

[0007] Furthermore, the main body of the pipeline is welded to the first joint and the second joint respectively.

[0008] Furthermore, a first annular conical surface is provided on the end face of the first end of the pipe body, and the radial dimension of the first annular conical surface gradually decreases in the direction near the first joint. A second annular conical surface is provided on the end face of the first joint facing the pipe body, and the radial dimension of the second annular conical surface gradually decreases in the direction near the pipe body. The solder used for welding the pipe body and the first joint is disposed between the first annular conical surface and the second annular conical surface; and / or, a third annular conical surface is provided on the end face of the second end of the pipe body, and the radial dimension of the third annular conical surface gradually decreases in the direction near the second joint. A fourth annular conical surface is provided on the end face of the second joint facing the pipe body, and the radial dimension of the fourth annular conical surface gradually decreases in the direction near the pipe body. The solder used for welding the pipe body and the second joint is disposed between the third annular conical surface and the fourth annular conical surface.

[0009] Furthermore, the first connector includes a first small-diameter section that connects to the main body of the pipe and a first large-diameter section that connects to the first water supply pipe, with the spigot of the first water supply pipe inserted into the first large-diameter section.

[0010] Furthermore, the first connector also includes a first ring plate connected between the first small diameter section and the first large diameter section, and a first retaining ring disposed on the inner wall of the first large diameter section. The first retaining ring is disposed at the end of the first large diameter section away from the first small diameter section. A first hemp ring is disposed between the first ring plate and the first retaining ring, and the first hemp ring is wrapped around the outer periphery of the inlet of the first water supply pipe.

[0011] Furthermore, the pipeline structure also includes a first asbestos cement layer disposed between the inlet of the first water supply pipe and the first large-diameter section, the first asbestos cement layer being located outside the first hemp ring.

[0012] Furthermore, the length of the first large-diameter section is between 100mm and 200mm, the length of the first small-diameter section is between 450mm and 550mm, the inner diameter of the first small-diameter section is equal to the inner diameter of the main body, and the inner diameter of the first large-diameter section is 100mm to 200mm larger than the outer diameter of the spigot of the first water supply pipe.

[0013] Furthermore, the second connector includes a second small-diameter section that connects to the main body of the pipe and a second large-diameter section that connects to the second water supply pipe, with the second socket inserted into the second large-diameter section.

[0014] Furthermore, the outer diameter of the second socket gradually increases in the direction close to the second joint. The second joint also includes a second ring plate connected between the second small diameter section and the second large diameter section, and a second retaining ring disposed on the inner wall of the second large diameter section. The second retaining ring is disposed in the middle of the second large diameter section. A second hemp ring is disposed between the second ring plate and the second retaining ring, and the second hemp ring is wrapped around the outer periphery of the second socket. The pipe structure also includes a second asbestos cement layer disposed between the second socket and the second large diameter section, and the second asbestos cement layer is located outside the second hemp ring.

[0015] Furthermore, the length of the second large diameter section is between 200mm and 300mm, the length of the second small diameter section is between 450mm and 550mm, the inner diameter of the second small diameter section is equal to the inner diameter of the main body, and the inner diameter of the second large diameter section is 100mm to 200mm larger than the maximum outer diameter of the second socket.

[0016] According to another aspect of the present invention, a method for repairing a concrete water supply pipeline is provided, comprising: identifying a damaged concrete water supply pipeline; removing the damaged concrete water supply pipeline from between a first water supply pipeline and a second water supply pipeline adjacent to the damaged concrete water supply pipeline; fabricating a pipeline body, a first connector, and a second connector; inserting the first connector into the socket of the first water supply pipeline, inserting the second connector into the second socket of the second water supply pipeline; and connecting the pipeline body between the first connector and the second connector.

[0017] Further, the steps for fabricating the main body of the pipe include: rolling and welding a first steel plate to form the main body of the pipe; the steps for fabricating the first joint include: rolling and welding a second steel plate to form a first small-diameter section, rolling and welding a third steel plate to form a first large-diameter section, cutting an annular structure on a fourth steel plate to form a first ring plate, welding the first small-diameter section to the inner ring position of the first ring plate, welding the first large-diameter section to the outer ring position of the first ring plate, and welding a first steel ring on the inner surface of the first large-diameter section to form a first retaining ring, wherein the first small-diameter section and the first large-diameter section are respectively located on both sides of the first ring plate; the steps for fabricating the second joint include: rolling and welding a fifth steel plate to form a second small-diameter section, rolling and welding a sixth steel plate to form a second large-diameter section, cutting an annular structure on a seventh steel plate to form a second ring plate, welding the second small-diameter section to the inner ring position of the second ring plate, welding the second large-diameter section to the outer ring position of the second ring plate, and welding a second steel ring on the inner surface of the second large-diameter section to form a second retaining ring, wherein the second small-diameter section and the second large-diameter section are respectively located on both sides of the second ring plate.

[0018] Furthermore, the step of connecting the first connector to the socket of the first water supply pipe includes: inserting the socket of the first water supply pipe into the first large-diameter section; filling the gap between the socket of the first water supply pipe and the first large-diameter section with first hemp to form a first hemp ring, wherein the first hemp ring is located between the first retaining ring and the first ring plate; and filling the outside of the first hemp ring with first asbestos cement to form a first asbestos cement layer.

[0019] Further, the step of connecting the second connector to the second socket of the second water supply pipe includes: inserting the second socket of the second water supply pipe into the second large-diameter section; filling the gap between the second socket and the second large-diameter section of the second water supply pipe with second hemp to form a second hemp ring, wherein the second hemp ring is located between the second retaining ring and the second ring plate; and filling the outside of the second hemp ring with second asbestos cement to form a second asbestos cement layer.

[0020] The technical solution of this invention includes a pipe body and a first connector and a second connector respectively disposed at both ends of the pipe body. When replacing a damaged concrete water supply pipe, the first connector is first connected to the socket of the first water supply pipe, the second connector is connected to the second socket, and then the pipe body is connected between the first connector and the second connector. This allows for the replacement of the damaged concrete water supply pipe and has the advantage of simple operation. Therefore, the technical solution of this application can effectively solve the problem of difficulty in replacing an entire reinforced concrete pipe in related technologies. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 A cross-sectional schematic diagram of the pipe body and the first joint according to an embodiment of the pipe structure of the present invention is shown;

[0023] Figure 2 It shows Figure 1 Enlarged view of the main body of the pipe and point A of the first joint;

[0024] Figure 3 A cross-sectional schematic diagram of the pipe body and the second joint according to an embodiment of the pipe structure of the present invention is shown;

[0025] Figure 4 It shows Figure 3 An enlarged view of the main body of the pipe and point B of the second joint; and

[0026] Figure 5 A schematic flowchart of an embodiment of a method for repairing concrete water supply pipelines according to the present invention is shown.

[0027] The above figures include the following reference numerals:

[0028] 10. Pipe body; 11. First annular conical surface; 12. Third annular conical surface; 20. First connector; 21. Second annular conical surface; 22. First small diameter section; 23. First large diameter section; 24. First ring plate; 25. First retaining ring; 30. Second connector; 31. Fourth annular conical surface; 32. Second small diameter section; 33. Second large diameter section; 34. Second ring plate; 35. Second retaining ring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] like Figures 1 to 4As shown, the pipe structure of this embodiment is used to replace a damaged concrete water supply pipe. The damaged concrete water supply pipe includes a main body and a first socket located at a first end of the main body. The first socket is connected to the inlet of a first water supply pipe, and the second end of the main body is connected to the second socket of a second water supply pipe. The pipe structure includes: a pipe body 10, a first connector 20, and a second connector 30. Specifically, the first connector 20 is located at the first end of the pipe body 10 and is inserted into the inlet of the first water supply pipe; the second connector 30 is located at the second end of the pipe body 10 and is inserted into the second socket.

[0033] Applying the technical solution of this embodiment, the pipeline structure includes a pipeline body 10 and a first connector 20 and a second connector 30 respectively disposed at both ends of the pipeline body 10. When replacing a damaged concrete water supply pipeline, first connect the first connector 20 to the socket of the first water supply pipeline, connect the second connector 30 to the second socket, and then connect the pipeline body 10 between the first connector 20 and the second connector 30. This allows for the replacement of the damaged concrete water supply pipeline and has the advantage of simple operation. Therefore, the technical solution of this embodiment can effectively solve the problem of difficulty in replacing an entire reinforced concrete pipe in related technologies.

[0034] It should be noted that, due to the different structures at both ends of the concrete water supply pipe (one end is a socket and the other end is a spigot), in this embodiment, the first connector 20 and the second connector 30 respectively wrap around the spigot and the second socket of the damaged concrete water supply pipe (i.e., the first water supply pipe and the second water supply pipe) to achieve the connection between the pipe structure and the first and second water supply pipes. Specifically, the pipe body 10, the first connector 20, and the second connector 30 can all be directly made of steel through operations such as plate rolling.

[0035] The pipe body 10 is welded to the first joint 20 and the second joint 30. Connecting the pipe body 10 and the first joint 20, as well as the pipe body 10 and the second joint 30, by welding offers advantages such as simple operation and reliable connection.

[0036] like Figure 1 and Figure 2As shown, in this embodiment, a first annular conical surface 11 is provided on the end face of the first end of the pipe body 10. The radial dimension of the first annular conical surface 11 gradually decreases in the direction near the first connector 20. A second annular conical surface 21 is provided on the end face of the first connector 20 facing the pipe body 10. The radial dimension of the second annular conical surface 21 gradually decreases in the direction near the pipe body 10. The solder used for welding the pipe body 10 and the first connector 20 is disposed between the first annular conical surface 11 and the second annular conical surface 21. After the pipe body 10 and the first connector 20 are joined together, the tips of the first annular conical surface 11 and the second annular conical surface 21 are positioned opposite each other to form a groove structure with a triangular cross-section. When welding the pipe body 10 and the first connector 20, the solder accumulates within this groove structure, ensuring the connection effect between the pipe body 10 and the first connector 20 and preventing water leakage. Preferably, the angle between the first annular conical surface 11 and the axis of the pipe structure is between 30° and 60°, and the angle between the second annular conical surface 21 and the axis of the pipe structure is between 45° and 60°.

[0037] like Figure 3 and Figure 4 As shown, in this embodiment, a third annular conical surface 12 is provided on the end face of the second end of the pipe body 10. The radial dimension of the third annular conical surface 12 gradually decreases in the direction near the second connector 30. A fourth annular conical surface 31 is provided on the end face of the second connector 30 facing the pipe body 10. The radial dimension of the fourth annular conical surface 31 gradually decreases in the direction near the pipe body 10. The solder used for welding the pipe body 10 and the second connector 30 is disposed between the third annular conical surface 12 and the fourth annular conical surface 31. After the pipe body 10 and the second connector 30 are joined together, the tips of the third annular conical surface 12 and the tips of the fourth annular conical surface 31 are arranged opposite each other to form a groove structure with a triangular cross-section. When welding the pipe body 10 and the second connector 30, the solder accumulates in this groove structure, ensuring the connection effect between the pipe body 10 and the second connector 30 and preventing water leakage. Preferably, the angle between the third annular conical surface 12 and the axis of the pipe structure is between 30° and 60°, and the angle between the fourth annular conical surface 31 and the axis of the pipe structure is between 45° and 60°.

[0038] like Figure 1As shown, the first connector 20 includes a first small-diameter section 22 that connects to the main pipe body 10 and a first large-diameter section 23 that connects to the first water supply pipe. The spigot of the first water supply pipe is inserted into the first large-diameter section 23. When connecting the pipe structure to the first water supply pipe, the spigot of the first water supply pipe is first inserted into the first large-diameter section 23, and then the connection between the first connector 20 and the first water supply pipe is made. This method has the advantages of simple operation and reliable connection. Specifically, both the first small-diameter section 22 and the first large-diameter section 23 are formed of steel coils with a thickness of 6mm to 10mm. During construction, the thickness of the steel can be selected according to the diameter of the main body of the concrete water supply pipe.

[0039] like Figure 1 As shown, the first connector 20 also includes a first annular plate 24 connecting the first small-diameter section 22 and the first large-diameter section 23, and a first retaining ring 25 disposed on the inner wall of the first large-diameter section 23. The first retaining ring 25 is disposed at the end of the first large-diameter section 23 away from the first small-diameter section 22. A first hemp ring is disposed between the first annular plate 24 and the first retaining ring 25, and the first hemp ring is wrapped around the outer circumference of the inlet of the first water supply pipe. Specifically, the first annular plate 24 is an annular steel plate structure, and the first retaining ring 25 is formed by wrapping a steel ring with a diameter of 10 mm. The first hemp ring disposed between the outer surface of the inlet of the first water supply pipe and the inner surface of the first large-diameter section 23 can play a role in preventing water leakage and preventing water from leaking out from the gap between the first water supply pipe and the first connector 20. The first hemp ring is placed between the first retaining ring 25 and the first ring plate 24. The first retaining ring 25 can block the first hemp ring, which can effectively prevent the first hemp ring from being washed out by the water flow from between the first water supply pipe and the first joint 20, thus affecting the anti-leakage effect.

[0040] Specifically, in this embodiment, the pipeline structure further includes a first asbestos cement layer disposed between the inlet of the first water supply pipe and the first large-diameter section 23, the first asbestos cement layer being located outside the first hemp ring. After connecting the first connector 20 and the first water supply pipe, the placement of the first asbestos cement layer between them further ensures the waterproofing effect, preventing the first hemp layer from being washed out of the gap between the inlet of the first water supply pipe and the first large-diameter section 23 under water pressure, while also ensuring the stability of the connection between the first water supply pipe and the first connector 20.

[0041] Specifically, when connecting the first connector 20 and the first water supply pipe, first insert the spigot of the first water supply pipe into the first large-diameter section 23, then fill the gap between them with first hemp fiber to form a first hemp fiber ring, and then set a first asbestos cement layer on the outside of the first hemp fiber ring. After curing for 4 hours, water supply can be restored. It should be noted that the above-mentioned "setting a first asbestos cement layer on the outside of the first hemp fiber ring" refers to setting the first asbestos cement layer on the side of the first hemp fiber ring away from the first ring plate 24.

[0042] In this embodiment, the length of the first large-diameter section 23 is between 100mm and 200mm, ensuring that the first connector 20 and the first water supply pipe have a sufficiently long docking length; the length of the first small-diameter section 22 is between 450mm and 550mm; the inner diameter of the first small-diameter section 22 is equal to the inner diameter of the main body, and correspondingly, the inner diameter of the pipe body 10 is also equal to the inner diameter of the main body, ensuring that the pipe diameter of the pipe structure is consistent with the original concrete water supply pipe; the inner diameter of the first large-diameter section 23 is 100mm to 200mm larger than the outer diameter of the spigot of the first water supply pipe, reserving space for the first hemp ring.

[0043] like Figure 3 As shown, the second connector 30 includes a second small-diameter section 32 that connects to the main pipe body 10 and a second large-diameter section 33 that connects to the second water supply pipe. The second socket is inserted into the second large-diameter section 33. When connecting the pipe structure to the second water supply pipe, the second socket of the second water supply pipe is first inserted into the second large-diameter section 33, and then the connection between the second connector 30 and the first water supply pipe is made. This method has the advantages of simple operation and reliable connection. Specifically, both the second small-diameter section 32 and the second large-diameter section 33 are formed from steel coils with a thickness of 6mm to 10mm. During construction, the thickness of the steel can be selected according to the diameter of the main body of the concrete water supply pipe.

[0044] like Figure 3 As shown, the outer diameter of the second socket gradually increases towards the second connector 30. The second connector 30 also includes a second annular plate 34 connecting the second small-diameter section 32 and the second large-diameter section 33, and a second retaining ring 35 disposed on the inner wall of the second large-diameter section 33. The second retaining ring 35 is located in the middle of the second large-diameter section 33. A second hemp ring is disposed between the second annular plate 34 and the second retaining ring 35, and the second hemp ring is wrapped around the outer circumference of the second socket. Specifically, the second annular plate 34 is an annular steel plate structure, and the second retaining ring 35 is formed by wrapping a steel ring with a diameter of 10mm. The second hemp ring disposed between the outer surface of the second socket of the second water supply pipe and the inner surface of the second large-diameter section 33 can play a role in preventing water leakage and preventing water from leaking out from the gap between the second water supply pipe and the second connector 30. The second hemp ring is placed between the second retaining ring 35 and the second ring plate 34. The second retaining ring 35 can block the second hemp ring, which can effectively prevent the second hemp ring from being washed out by the water flow from between the second water supply pipe and the second joint 30, thus affecting the anti-leakage effect.

[0045] It should be noted that the "middle part of the second large diameter section 33" mentioned above does not refer to the middle position of the second large diameter section 33. The middle 1 / 3 of the length of the second large diameter section 33 can be understood as the "middle part of the second large diameter section 33". Since the second socket has a structure in which the outer diameter gradually increases in the direction close to the second connector 30, if the second retaining ring 35 is set at the free end of the second large diameter section 33 (i.e., Figure 3 If the second ring is positioned at the far left of the second socket, the radial gap between the second retaining ring 35 and the second socket will be too large, making it easy for the second hemp ring to be washed out by the water flow. In this embodiment, placing the second retaining ring 35 in the middle of the second large diameter section 33 can effectively block the second hemp ring.

[0046] Specifically, the pipeline structure also includes a second asbestos cement layer disposed between the second socket and the second large-diameter section 33, the second asbestos cement layer being located outside the second hemp ring. After the second connector 30 and the second water supply pipeline are connected, the placement of the second asbestos cement layer between them further ensures the waterproofing effect, preventing the second hemp layer from being washed out of the gap between the second socket and the second large-diameter section 33 of the second water supply pipeline under water pressure, while also ensuring the stability of the connection between the two.

[0047] Specifically, when connecting the second connector 30 and the second water supply pipe, first insert the second socket of the second water supply pipe into the second large diameter section 33, then fill the gap between the two with second hemp to form a second hemp ring, and then set a second asbestos cement layer on the outside of the second hemp ring. After curing for 4 hours, water supply can be restored.

[0048] It should be noted that the above-mentioned "setting a second asbestos cement layer on the outside of the second hemp ring" refers to setting a second asbestos cement layer on the side of the second hemp ring away from the second ring plate 34.

[0049] In this embodiment, the length of the second large-diameter section 33 is between 200mm and 300mm, ensuring that the second connector 30 and the second water supply pipe have a sufficiently long docking length; the length of the second small-diameter section 32 is between 450mm and 550mm; the inner diameter of the second small-diameter section 32 is equal to the inner diameter of the main body, and correspondingly, the inner diameter of the pipe body 10 is also equal to the inner diameter of the main body, ensuring that the pipe diameter of the pipe structure is consistent with the original concrete water supply pipe; the inner diameter of the second large-diameter section 33 is 100mm to 200mm larger than the maximum outer diameter of the second socket, reserving space for the second hemp ring.

[0050] Using the technical solution of this embodiment, the raw material of the pipeline structure is steel plate, which is processed on-site according to the size of the damaged concrete water supply pipeline through plate rolling, butt welding and splicing welding. Oil hemp, asbestos cement and steel plate are all readily available materials. The pipeline structure of this embodiment has the characteristics of adapting to various pipe diameters, fast processing speed, low cost and simple installation. It can quickly repair water supply pipelines and restore water supply in a short time.

[0051] like Figure 5 As shown, this application also provides a method for repairing concrete water supply pipelines. The method for repairing concrete water supply pipelines in this embodiment includes:

[0052] Step S10: Identify the damaged concrete water supply pipe;

[0053] Step S20: Remove the damaged concrete water supply pipe from between the first and second water supply pipes adjacent to the damaged concrete water supply pipe.

[0054] Step S30: Fabricate the pipe body 10, the first connector 20, and the second connector 30;

[0055] Step S40: Connect the first connector 20 to the socket of the first water supply pipe, and connect the second connector 30 to the second socket of the second water supply pipe.

[0056] Step S50: Connect the pipe body 10 between the first connector 20 and the second connector 30.

[0057] By applying the technical solution of this embodiment, the pipe structure for replacing damaged concrete water supply pipes is configured as a segmented structure. When replacing the concrete water supply pipe, the various parts constituting the pipe structure (i.e., the pipe body 10, the first connector 20, and the second connector 30) are fabricated on-site. First, the first connector 20 is connected to the socket of the first water supply pipe, and the second connector 30 is connected to the second socket. Then, the pipe body 10 is connected between the first connector 20 and the second connector 30. This allows for the replacement of the damaged concrete water supply pipe, offering the advantage of simple operation. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where it is difficult to replace an entire reinforced concrete pipe.

[0058] It should be noted that the above-mentioned concrete water supply pipeline includes multiple concrete water supply pipes connected in sequence. This method is mainly used to replace the damaged concrete water supply pipes in multiple concrete water supply pipelines (such as in the event of a sudden pipe burst), especially for scenarios that require emergency repairs, to ensure that the concrete water supply pipeline can supply water normally.

[0059] Specifically, when performing step S20, the damaged concrete water supply pipe is first broken up using a hydraulic breaker, then the pipe fragments are cleared and a certain distance is dug down to provide sufficient operating space for the subsequent step S50. In step S50, the connection between the three components is achieved by welding the two ends of the pipe body 10 to the first connector 20 and the second connector 30, which has the advantage of simple operation.

[0060] The steps for manufacturing the pipe body 10 include step S31: curling and welding the first steel plate to form the pipe body 10;

[0061] The steps for manufacturing the first joint 20 include step S32: curling and welding a second steel plate to form a first small diameter segment 22, curling and welding a third steel plate to form a first large diameter segment 23, cutting an annular structure on a fourth steel plate to form a first ring plate 24, welding the first small diameter segment 22 to the inner ring position of the first ring plate 24, welding the first large diameter segment 23 to the outer ring position of the first ring plate 24, and welding a first steel ring to the inner surface of the first large diameter segment 23 to form a first retaining ring 25, wherein the first small diameter segment 22 and the first large diameter segment 23 are respectively located on both sides of the first ring plate 24;

[0062] The steps for fabricating the second connector 30 include step S33: curling and welding the fifth steel plate to form the second small diameter segment 32, curling and welding the sixth steel plate to form the second large diameter segment 33, cutting an annular structure on the seventh steel plate to form the second ring plate 34, welding the second small diameter segment 32 to the inner ring position of the second ring plate 34, welding the second large diameter segment 33 to the outer ring position of the second ring plate 34, and welding the second steel ring on the inner surface of the second large diameter segment 33 to form the second retaining ring 35, wherein the second small diameter segment 32 and the second large diameter segment 33 are located on both sides of the second ring plate 34 respectively.

[0063] On-site, steel plates and steel rings are used as raw materials, and the pipe body 10, first small diameter section 22, first large diameter section 23, first ring plate 24, first retaining ring 25, second small diameter section 32, second large diameter section 33, second ring plate 34, and second retaining ring 35 are formed through welding. This method has the advantages of simple operation and easy transportation of raw materials. Furthermore, the specific dimensions of each pipe section and ring plate can be determined according to the specific dimensions of the concrete water supply pipe to be replaced, making it adaptable to concrete water supply pipes of various sizes.

[0064] In this embodiment, the step of connecting the first connector 20 to the socket of the first water supply pipe includes:

[0065] Step S41: Insert the spigot of the first water supply pipe into the first large-diameter section 23;

[0066] Step S42: Fill the gap between the inlet of the first water supply pipe and the first large-diameter section 23 with first oiled hemp to form a first oiled hemp ring, wherein the first oiled hemp ring is located between the first retaining ring 25 and the first ring plate 24;

[0067] Step S43: Fill the outside of the first hemp ring with the first asbestos cement to form the first asbestos cement layer.

[0068] In this embodiment, the step of connecting the second connector 30 to the second socket of the second water supply pipe includes:

[0069] Step S44: Insert the second socket of the second water supply pipe into the second large diameter section 33;

[0070] Step S45: Fill the gap between the second socket and the second large diameter section 33 of the second water supply pipe with second hemp to form a second hemp ring, wherein the second hemp ring is located between the second retaining ring 35 and the second ring plate 34.

[0071] Step S46: Fill the outside of the second hemp ring with a second asbestos cement to form a second asbestos cement layer.

[0072] Specifically, steps S42 and S43 are mainly for achieving a waterproof connection between the first water supply pipe and the first connector 20, while steps S45 and S46 are mainly for achieving a waterproof connection between the second water supply pipe and the second connector 30. In practice, steps S41 to S43 can be executed first, followed by steps S44 to S46; or steps S44 to S46 can be executed first, followed by steps S41 to S43; or steps S41 to S43 and S44 to S46 can be executed simultaneously.

[0073] Specifically, in step S42 above, wooden wedges or wedges formed by stacking multiple steel sheets can be used to support the outer wall of the inlet of the first water supply pipe and the inner wall of the first large-diameter section 23 to ensure a uniform circumferential gap between them. Then, the gap between the inlet of the first water supply pipe and the first large-diameter section 23 is filled with first hemp to form a first hemp ring. It should be noted that the above-mentioned "filling the outside of the first hemp ring with first asbestos cement" refers to filling the first hemp ring with first asbestos cement on the side away from the first ring plate 24. After setting the first hemp ring, the first asbestos cement layer is then set in the gap between the inlet of the first water supply pipe and the first large-diameter section 23. This can prevent the first hemp layer from being washed out of the gap between the inlet of the first water supply pipe and the first large-diameter section 23 under water pressure, ensuring a waterproof effect.

[0074] Specifically, in step S45 above, wooden wedges or wedges formed by stacking multiple steel sheets can be used to support the gap between the outer wall of the second socket and the inner wall of the second large-diameter section 33 of the second water supply pipe, ensuring a uniform circumferential gap. Then, a second layer of hemp is filled into the gap between the second socket and the second large-diameter section 33 of the second water supply pipe to form a second hemp ring. It should be noted that "filling the outside of the second hemp ring with second asbestos cement" refers to filling the second hemp ring on the side away from the second ring plate 34. After setting the second hemp ring, a second layer of asbestos cement is then placed in the gap between the second socket and the second large-diameter section 33 of the second water supply pipe. This prevents the second hemp layer from being washed out of the gap between the second socket and the second large-diameter section 33 of the second water supply pipe under water pressure, ensuring a leak-proof effect.

[0075] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipe structure, characterized in that, The pipeline structure is used to replace a damaged concrete water supply pipe. The damaged concrete water supply pipe includes a main body and a first socket disposed at a first end of the main body. The first socket is connected to the spigot of a first water supply pipe, and the second end of the main body is connected to a second socket of a second water supply pipe. The pipeline structure includes: Pipe body (10); The first connector (20) is disposed at the first end of the pipe body (10) and is plugged into the socket of the first water supply pipe. The first connector (20) covers the socket of the first water supply pipe. The second connector (30) is located at the second end of the pipe body (10) and is inserted into the second socket. The second connector (30) covers the second socket of the second water supply pipe. The main body of the pipe (10) is welded to the first joint (20) and the second joint (30) respectively; A first annular conical surface (11) is provided on the end face of the first end of the pipe body (10). The radial dimension of the first annular conical surface (11) gradually decreases in the direction close to the first joint (20). A second annular conical surface (21) is provided on the end face of the first joint (20) facing the pipe body (10). The radial dimension of the second annular conical surface (21) gradually decreases in the direction close to the pipe body (10). The solder for welding the pipe body (10) and the first joint (20) is provided between the first annular conical surface (11) and the second annular conical surface (21). The angle between the first annular conical surface (11) and the axis of the pipe structure is between 30° and 60°. The angle between the second annular conical surface (21) and the axis of the pipe structure is between 45° and 60°. A third annular conical surface (12) is provided on the end face of the second end of the pipe body (10). The radial dimension of the third annular conical surface (12) gradually decreases in the direction close to the second joint (30). A fourth annular conical surface (31) is provided on the end face of the second joint (30) facing the pipe body (10). The radial dimension of the fourth annular conical surface (31) gradually decreases in the direction close to the pipe body (10). The solder used for welding the pipe body (10) and the second joint (30) is provided between the third annular conical surface (12) and the fourth annular conical surface (31). The angle between the third annular conical surface (12) and the axis of the pipe structure is between 30° and 60°. The angle between the fourth annular conical surface (31) and the axis of the pipe structure is between 45° and 60°. The first connector (20) includes a first small-diameter section (22) that connects to the main body of the pipe (10) and a first large-diameter section (23) that connects to the first water supply pipe, wherein the socket of the first water supply pipe is inserted into the first large-diameter section (23); The first connector (20) further includes a first ring plate (24) connected between the first small diameter section (22) and the first large diameter section (23) and a first retaining ring (25) disposed on the inner wall of the first large diameter section (23). The first retaining ring (25) is disposed at one end of the first large diameter section (23) away from the first small diameter section (22). A first hemp ring is disposed between the first ring plate (24) and the first retaining ring (25). The first hemp ring is wrapped around the outer periphery of the inlet of the first water supply pipe. The second connector (30) includes a second small-diameter section (32) that connects to the main body of the pipe (10) and a second large-diameter section (33) that connects to the second water supply pipe, and the second socket is inserted into the second large-diameter section (33); The outer diameter of the second socket gradually increases in the direction close to the second connector (30). The second connector (30) also includes a second ring plate (34) connected between the second small diameter section (32) and the second large diameter section (33) and a second retaining ring (35) disposed on the inner wall of the second large diameter section (33). The second retaining ring (35) is disposed in the middle of the second large diameter section (33). A second hemp ring is disposed between the second ring plate (34) and the second retaining ring (35). The second hemp ring is wrapped around the outer periphery of the second socket.

2. The pipe structure according to claim 1, characterized in that, The pipeline structure also includes a first asbestos cement layer disposed between the inlet of the first water supply pipeline and the first large-diameter section (23), the first asbestos cement layer being located outside the first hemp ring.

3. The pipe structure according to claim 1, characterized in that, The length of the first large diameter section (23) is between 100mm and 200mm, the length of the first small diameter section (22) is between 450mm and 550mm, the inner diameter of the first small diameter section (22) is equal to the inner diameter of the main body, and the inner diameter of the first large diameter section (23) is 100mm to 200mm larger than the outer diameter of the inlet of the first water supply pipe.

4. The pipe structure according to claim 3, characterized in that, The pipe structure also includes a second asbestos cement layer disposed between the second socket and the second large diameter section (33), the second asbestos cement layer being located outside the second hemp ring.

5. The pipe structure according to claim 3, characterized in that, The length of the second large diameter section (33) is between 200mm and 300mm, the length of the second small diameter section (32) is between 450mm and 550mm, the inner diameter of the second small diameter section (32) is equal to the inner diameter of the main body, and the inner diameter of the second large diameter section (33) is 100mm to 200mm larger than the maximum outer diameter of the second socket.

6. A method for repairing concrete water supply pipelines, characterized in that, Identify the damaged concrete water supply pipe; Remove the damaged concrete water supply pipe from between the first and second water supply pipes adjacent to the damaged concrete water supply pipe. Fabricate the main body of the pipe (10), the first joint (20), and the second joint (30); The first connector (20) is inserted into the socket of the first water supply pipe, and the second connector (30) is inserted into the second socket of the second water supply pipe. The first connector (20) and the second connector (30) respectively cover the socket of the first water supply pipe and the second socket of the second water supply pipe. Connect the pipe body (10) between the first connector (20) and the second connector (30); The connection between the three components is achieved by welding the two ends of the pipe body (10) to the first connector (20) and the second connector (30) respectively. A first annular conical surface (11) is provided on the end face of the pipe body (10) that is inserted into the first connector (20). The radial dimension of the first annular conical surface (11) gradually decreases in the direction close to the first connector (20). A second annular conical surface (21) is provided on the end face of the first connector (20) facing the pipe body (10). The radial dimension of the second annular conical surface (21) gradually decreases in the direction close to the pipe body (10). The solder used for welding the pipe body (10) and the first connector (20) is provided between the first annular conical surface (11) and the second annular conical surface (21). The angle between the first annular conical surface (11) and the axis of the pipe structure is between 30° and 60°. The angle between the second annular conical surface (21) and the axis of the pipe structure is between 45° and 60°. A third annular conical surface (12) is provided on the end face of the pipe body (10) where it is inserted into the second connector (30). The radial dimension of the third annular conical surface (12) gradually decreases in the direction close to the second connector (30). A fourth annular conical surface (31) is provided on the end face of the second connector (30) facing the pipe body (10). The radial dimension of the fourth annular conical surface (31) gradually decreases in the direction close to the pipe body (10). The solder used for welding the pipe body (10) and the second connector (30) is provided between the third annular conical surface (12) and the fourth annular conical surface (31). The angle between the third annular conical surface (12) and the axis of the pipe structure is between 30° and 60°. The angle between the fourth annular conical surface (31) and the axis of the pipe structure is between 45° and 60°. The steps of making the pipe body (10) include: curling and welding a first steel plate to form the pipe body (10); The steps for making the first joint (20) include: rolling and welding a second steel plate to form a first small diameter segment (22), rolling and welding a third steel plate to form a first large diameter segment (23), cutting an annular structure on a fourth steel plate to form a first ring plate (24), welding the first small diameter segment (22) to the inner ring position of the first ring plate (24), welding the first large diameter segment (23) to the outer ring position of the first ring plate (24), and welding a first steel ring on the inner surface of the first large diameter segment (23) to form a first retaining ring (25), wherein the first small diameter segment (22) and the first large diameter segment (23) are located on both sides of the first ring plate (24); The steps for making the second joint (30) include: rolling and welding the fifth steel plate to form the second small diameter segment (32), rolling and welding the sixth steel plate to form the second large diameter segment (33), cutting an annular structure on the seventh steel plate to form the second ring plate (34), welding the second small diameter segment (32) to the inner ring position of the second ring plate (34), welding the second large diameter segment (33) to the outer ring position of the second ring plate (34), and welding the second steel ring on the inner surface of the second large diameter segment (33) to form the second retaining ring (35), wherein the second small diameter segment (32) and the second large diameter segment (33) are respectively located on both sides of the second ring plate (34); The steps of connecting the first connector (20) to the socket of the first water supply pipe include: Insert the inlet of the first water supply pipe into the first large-diameter section (23); The first oiled hemp is filled in the gap between the inlet of the first water supply pipe and the first large diameter section (23) to form a first oiled hemp ring, wherein the first oiled hemp ring is located between the first retaining ring (25) and the first ring plate (24); The steps of connecting the second connector (30) to the second socket of the second water supply pipe include: Insert the second socket of the second water supply pipe into the second large diameter section (33); A second hemp ring is formed by filling the gap between the second socket and the second large diameter section (33) of the second water supply pipe with a second hemp ring, wherein the second hemp ring is located between the second retaining ring (35) and the second ring plate (34).

7. The maintenance method according to claim 6, characterized in that, The steps of connecting the first connector (20) to the socket of the first water supply pipe include: The outer side of the first hemp rope is filled with the first asbestos cement to form the first asbestos cement layer.

8. The maintenance method according to claim 6, characterized in that, The steps of connecting the second connector (30) to the second socket of the second water supply pipe include: A second asbestos cement layer is formed by filling the outside of the second hemp ring.

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