A connection structure and construction method for a water supply pipeline

Abstract

This application discloses a connection structure for a water supply pipeline, relating to the field of municipal water supply technology. It includes a water supply pipe 1 and a water supply pipe 2, and a connecting pipe. The inner diameter of the connecting pipe is the same as the outer diameter of the water supply pipe 1, and the inner diameter of the connecting pipe is the same as the outer diameter of the water supply pipe 2. The connecting pipe is provided with a mounting hole 1, a mounting hole 2, and a fixing component. By embedding the water supply pipe 1 and the water supply pipe 2 into the connecting pipe and fixing them with the fixing component, this method makes the connection operation of the water supply pipe 1 and the water supply pipe 2 more convenient. Compared with welding, it reduces damage to the water supply pipe 1 and the water supply pipe 2. Furthermore, the connection point of the water supply pipe 1 and the water supply pipe 2 is located on the inner wall of the connecting pipe, and the contact between the inner walls of the connecting pipe reduces the leakage of liquid from the connection point of the water supply pipe 1 and the water supply pipe 2.

Description

Technical Field

[0001] This application relates to the field of municipal water supply technology, and more specifically, to a connection structure and construction method for a water supply pipeline. Background Technology

[0002] Municipal water supply is the most basic guarantee for human survival in cities, and water resources need to be transported through municipal water supply pipelines to maintain the normal operation of cities. Therefore, the construction of municipal pipelines is an essential part of urban infrastructure, and water supply pipelines include drinking water, tap water, and miscellaneous water.

[0003] As cities expand, the coverage area of ​​municipal water supply pipelines also increases, necessitating the continuous addition of new municipal water supply pipelines. However, existing water supply pipelines made of thin-walled stainless steel are often connected by welding. Welding connections are prone to weld cracks, incomplete penetration, slag inclusions, porosity, and defects in the weld appearance, which can easily damage the water supply pipelines and require improvement. Summary of the Invention

[0004] To address the problem that welding connections in water supply pipelines can easily damage them, this application provides a connection structure and construction method for water supply pipelines.

[0005] This application provides a connection structure and construction method for a water supply pipeline, which adopts the following technical solution: A connection structure for a water supply pipe includes a first water supply pipe and a second water supply pipe, and a connecting pipe. The inner diameter of the connecting pipe is the same as the outer diameter of the first water supply pipe, and the inner diameter of the connecting pipe is the same as the outer diameter of the second water supply pipe. The connecting pipe is embedded at one end of the first water supply pipe near the second water supply pipe, and the connecting pipe is embedded at one end of the second water supply pipe near the first water supply pipe. The ends of the first water supply pipe and the second water supply pipe that are embedded in the connecting pipe abut against each other. The connecting pipe has a first mounting hole, a second mounting hole, and a fixing member. The first mounting hole is located on the side of the connecting pipe near the first water supply pipe, and the second mounting hole is located on the side of the connecting pipe near the second water supply pipe. The first water supply pipe has a first mounting groove corresponding to the first mounting hole. The second water supply pipe has a second mounting groove corresponding to the second water supply pipe. Two fixing members are provided: one fixing member passes through the first mounting hole and is embedded in the first mounting groove, and the other fixing member passes through the second mounting hole and is embedded in the second mounting groove.

[0006] The above technical solution involves setting up a connecting pipe. When it is necessary to connect water supply pipe 1 and water supply pipe 2, water supply pipe 1 and water supply pipe 2 are embedded in the connecting pipe and fixed with fasteners. This method makes the connection operation of water supply pipe 1 and water supply pipe 2 more convenient. Compared with welding, it reduces damage to water supply pipe 1 and water supply pipe 2. Furthermore, the connection point of water supply pipe 1 and water supply pipe 2 is located on the inner wall of the connecting pipe. Through the contact of the inner wall of the connecting pipe, the leakage of liquid from the connection point of water supply pipe 1 and water supply pipe 2 is reduced.

[0007] Furthermore, a limiting groove is provided on one side wall of the mounting hole. The limiting groove is located on the side of the mounting hole away from the water supply pipe. An elastic element is provided at the bottom of the limiting groove. The elastic force of the elastic element causes the fixing element to press against the side wall of the mounting hole near the water supply pipe.

[0008] Through the above technical solution, an elastic element is set up to restrict the fixing element from disengaging from the mounting hole 1 and the mounting hole 2. Since the limiting groove is located on the side of the mounting hole 1 away from the water supply pipe 2, the elastic force of the elastic element causes the fixing element to press against the side wall of the mounting hole 1 near the water supply pipe 2, while also pressing against the side of the mounting groove 1 near the water supply pipe 2. This further makes the water supply pipe 1 and the water supply pipe 2 press against each other, reducing the possibility of the water supply pipe 1 and the water supply pipe 2 separating from each other, and also reducing the possibility of liquid leakage.

[0009] Furthermore, the side wall of the fixing member is provided with a fixing groove, and the fixing groove corresponds to the position of the limiting groove; the end of the elastic member one near the water supply pipe two is provided with a limiting block, and the limiting block is embedded in the fixing groove.

[0010] By using the above technical solution, a limiting block is set. After the limiting block is embedded in the fixing groove, it restricts the fixing part from coming out of the mounting hole one and the mounting groove one. Furthermore, through the clamping action of the limiting block, the water inlet pipe one is further pushed, so that the water supply pipe one and the water supply pipe two are pressed together, which reduces the possibility of accidental separation of the water supply pipe one and the water supply pipe two, and also reduces the possibility of liquid leakage.

[0011] Furthermore, the limiting block is provided with a guide portion, which is located at one end of the limiting block near the bottom of the fixing groove and at the other end of the limiting block away from the mounting groove. The cross-sectional area of ​​the guide portion gradually increases along the direction away from the bottom of the fixing groove.

[0012] The above technical solution includes a guide section, which facilitates the insertion of the limiting block into the fixing groove during installation. In the actual process of connecting water supply pipe 1 and water supply pipe 2, some soil falls into the installation groove 1 because the water supply pipe 1 and water supply pipe 2 are placed in the trench dug in the ground. At this time, the position of the fixing block will be offset to a certain extent, so that the fixing groove and the limiting groove do not correspond exactly. The guide section reduces the situation where the limiting block cannot be inserted into the fixing groove when the position of the fixing block is offset, making the connection between water supply pipe 1 and water supply pipe 2 more convenient.

[0013] Furthermore, the fixing member is provided with an elastic element two, which is located on the side wall of the fixing member and abuts against the wall of the mounting groove.

[0014] By using the above technical solution, an elastic element two is provided. The clamping action of the elastic element two further reduces the possibility of the fixing element two disengaging from the mounting groove one and the mounting hole one. In addition, it is convenient to perform maintenance by pushing the fixing element to compress the elastic element two, so that a gap is left between the fixing element and the wall of the mounting hole one. The tool can then pass through the gap and pull the limiting block out of the fixing groove to remove the fixing element and perform subsequent operations.

[0015] Furthermore, the fixing component is equipped with a magnet located at one end of the fixing component near the bottom of the mounting groove. The water supply pipe includes two square tubes, each with a closing plate hinged to the inner wall of the water supply pipe. The closing plate is equipped with a magnetic component one, and the square tube is equipped with a magnetic component two and a magnetic component three. The magnetic component two is located on the side of the square tube closer to the fixing component, and the magnetic component three is located on the side of the square tube away from the fixing component. When the magnetic component one and magnetic component two are attracted to each other, and the magnetic component one attracts the magnet, the closing plate abuts against the side of the square tube closer to the fixing component. When the magnetic component one and magnetic component two are attracted to each other, and the magnetic component one has no interaction with the magnet, the closing plate rotates towards the side of the square tube away from the fixing component. When the magnetic component one and magnetic component three are attracted to each other, the closing plate restricts the liquid flow out of the square tube.

[0016] Through the above technical solution, a closing plate is set up. When water supply pipe one is connected to water supply pipe two, as liquid moves from water supply pipe one towards water supply pipe two, the liquid pushes the closing plate towards magnetic component two. When magnetic component two and magnetic component one approach each other, due to the attraction of the magnet in installation groove one to magnetic component one, and the mutual attraction between magnetic component one and magnetic component two, the closing plate adheres to the inner wall of the square tube. When it is necessary to separate water supply pipe one and water supply pipe two, due to the removal of the fixing component, the attraction force between magnetic component one and magnetic component two is insufficient to support the closing plate against the side of the square tube close to the fixing component, causing the closing plate to rotate until magnetic component one and magnetic component three are attracted together. At this time, the closing plate closes one end of water supply pipe one. In this way, during the maintenance of water supply pipes, the need to drain the liquid inside the water supply pipes is reduced, thus reducing the waste of water resources.

[0017] Furthermore, the end of the first water supply pipe near the second water supply pipe is provided with a connecting ring groove, and the end of the second water supply pipe near the first water supply pipe is provided with an elastic element three. The size of the elastic element three is larger than the size of the connecting ring groove, and the end of the elastic element three near the bottom of the connecting ring groove is provided with a gradually expanding surface. The cross-sectional area of ​​the gradually expanding surface gradually increases along the end away from the bottom of the connecting ring groove.

[0018] The above technical solution involves setting up a connecting ring groove and an elastic element three. By embedding the elastic element three into the connecting ring groove, a sealing effect is achieved, reducing liquid leakage. Furthermore, since the size of the elastic element three is larger than the size of the connecting ring groove, when the elastic element three is embedded in the connecting ring groove, the elastic element presses against the inner wall of the connecting ring groove, increasing the force required for the water supply pipe one and water supply pipe two to separate from each other, thus reducing the likelihood of them separating.

[0019] Furthermore, the water supply pipe is provided with a sealing ring groove, which is located at the bottom of the connecting ring groove, and the opening of the sealing ring groove faces the elastic element three; when the elastic element three is embedded in the connecting ring groove, the end of the elastic element three near the bottom of the connecting ring groove undergoes elastic deformation and is embedded in the sealing ring groove.

[0020] By using the above technical solution, a sealing ring groove is set up, and the elastic element is embedded in the sealing ring groove by three deformations. The sealing ring groove and the connecting ring groove cooperate with each other to achieve a double-layer sealing effect and reduce liquid leakage.

[0021] A construction method for a water supply pipeline includes any of the above-mentioned connection structures for water supply pipelines, and further includes the following construction steps: excavating a trench at the location where the water supply pipeline needs to be laid, placing water supply pipe one and water supply pipe two into the trench, and connecting water supply pipe one and water supply pipe two through a connecting pipe; after completing the connection between water supply pipe one and water supply pipe two, backfilling is carried out, leaving the connecting pipe portion exposed during backfilling, and backfilling is carried out after pressure testing; pressure testing is carried out when the water supply pipeline is laid for about one kilometer, and the condition of the bends in the water supply pipeline is checked before pressure testing, and pressure testing can only be carried out after the condition is qualified.

[0022] The above technical solution, by adopting a connection structure for water supply pipes, makes the connection of water supply pipes more convenient. When connecting water supply pipe one and water supply pipe two, it is only necessary to connect the two through a connecting pipe and a fixing component. The connecting pipe also protects the connection point between water supply pipe one and water supply pipe two, making the connection more stable and reducing liquid leakage.

[0023] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting up a connecting pipe, the connection operation between water supply pipe 1 and water supply pipe 2 is more convenient. Compared with the connection by welding, it reduces the damage to water supply pipe 1 and water supply pipe 2. Moreover, the connection between water supply pipe 1 and water supply pipe 2 is located on the inner wall of the connecting pipe. Through the contact of the inner wall of the connecting pipe, the leakage of liquid from the connection between water supply pipe 1 and water supply pipe 2 is reduced. (2) By setting a limit block, the water supply pipe 1 and the water supply pipe 2 are pressed together, which reduces the possibility of accidental separation of the water supply pipe 1 and the possibility of liquid leakage. (3) By setting the connecting ring groove and the elastic element three, the leakage of liquid is reduced; and since the size of the elastic element three is larger than the size of the connecting ring groove, when the elastic element three is embedded in the connecting ring groove, the elastic element presses against the inner wall of the connecting ring groove, which increases the force required for the water supply pipe one and the water supply pipe two to separate from each other, and reduces the separation of the two. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall implementation of Example 1.

[0025] Figure 2 This is a partial cross-sectional schematic diagram of Embodiment 1.

[0026] Figure 3 for Figure 2 An enlarged diagram of A in the diagram.

[0027] Figure 4 This is a schematic diagram of the overall implementation of Example 2.

[0028] Figure 5 This is a partial cross-sectional view of Example 2.

[0029] Reference numerals in the attached drawings: 1. Water supply pipe one; 2. Water supply pipe two; 3. Connecting pipe; 4. Installation channel; 5. Installation groove one; 6. Installation groove two; 7. Installation hole one; 8. Installation hole two; 9. Fixing component; 10. Elastic component one; 11. Elastic component two; 12. Elastic component three; 13. Limiting groove; 14. Limiting block; 15. Guide part; 16. Connecting ring groove; 17. Sealing ring groove; 18. Gradually expanding surface; 19. Square tube; 20. Closing plate; 21. Magnetic component one; 22. Magnetic component two; 23. Magnetic component three; 24. Magnet; 25. Fixing groove. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a connection structure and construction method for a water supply pipeline.

[0032] Example 1: See Figure 1 A connection structure for a water supply pipeline includes a water supply pipe 1, a water supply pipe 2, and a connecting pipe 3.

[0033] See Figure 2 and Figure 3 The connecting pipe 3 is provided with an installation channel 4, which runs through the connecting pipe 3. The inner diameter of the installation channel 4 is the same as the outer diameter of the water supply pipe 1 and the outer diameter of the water supply pipe 2. The end of the water supply pipe 1 near the water supply pipe 2 is embedded in the installation channel 4 and pressed against the inner wall of the installation channel 4. The end of the water supply pipe 2 near the water supply pipe 1 is embedded in the installation channel 4 and pressed against the inner wall of the installation channel 4. The ends of the water supply pipe 1 and the water supply pipe 2 embedded in the installation channel 4 are in contact with each other.

[0034] Water supply pipe 1 has an installation groove 5, and water supply pipe 2 has an installation groove 6. Connecting pipe 3 has an installation hole 7, an installation hole 8, and a fastener 9. Installation hole 7 is located on the side of connecting pipe 3 near water supply pipe 1, and extends through connecting pipe 3 to installation channel 4. Installation hole 7 corresponds to installation groove 5. Installation hole 8 is located on the side of connecting pipe 3 near water supply pipe 2, and extends through connecting pipe 3 to installation channel 4. Installation hole 8 corresponds to installation groove 6. Two fasteners 9 are provided: one fastener 9 passes through installation hole 7 and is embedded in installation groove 5, and the other fastener 9 passes through installation hole 8 and is embedded in installation groove 6. Fastener 9 has a fixing groove 25 located on its side wall. Fastener 9 also has an elastic element 11 located on the side wall of fastener 9 away from fixing groove 25, and the elastic element 11 abuts against the wall of the mounting groove. In practical use, the elastic element 21 is made of rubber; alternatively, the elastic element can also be made of silicone.

[0035] See Figure 2and Figure 3 Taking mounting hole 7 as an example, the inner wall of mounting hole 7 is provided with a limiting groove 13. The limiting groove 13 is located on the side of mounting hole 7 away from water supply pipe 2. The bottom of the limiting groove 13 is provided with an elastic element 10, which is connected to a limiting block 14. The limiting block 14 is located at the end of the elastic element 10 away from the bottom of the limiting groove 13. When the elastic element 10 is not compressed, the limiting block 14 protrudes from the surface of the side wall of mounting hole 7. The limiting block 14 corresponds to the fixing groove 25. The limiting block 14 is provided with a guide part 15, which is located at the end of the limiting block 14 near the bottom of the fixing groove 25 and at the end of the limiting block 14 away from the mounting groove 5. The cross-sectional area of ​​the guide part 15 gradually increases along the direction away from the bottom of the fixing groove 25. In actual use, the elastic element 10 is a spring, but it can also be rubber.

[0036] The guide part 15 facilitates the downward movement of the fixing member 9, pushing the limiting block 14 towards the bottom of the limiting groove 13 until the fixing groove 25 of the fixing member 9 corresponds to the limiting block 14. At this time, the elastic element 10 pushes the limiting block 14 into the fixing groove 25. When it is necessary to remove the fixing member 9, by moving the fixing member 9 towards the water supply pipe 2, the elastic element 2 11 is compressed. At this time, a gap appears between the fixing member 9 and the side of the mounting hole 7 away from the water supply pipe 2. At this time, the limiting block 14 can be pushed towards the bottom of the limiting groove 13 using the guide part 15 with a tool, and then the fixing member 9 can be removed. In actual use, the fixing member 9 is a fixing block. When the fixing block passes through the mounting hole 7 and is embedded into the mounting groove 5, the end of the fixing block away from the bottom of the mounting groove 5 is flush with or slightly protrudes from the side wall surface of the connecting pipe 3.

[0037] Water supply pipe 1 is provided with a connecting ring groove 16, located at the end of water supply pipe 1 near water supply pipe 2. A sealing ring groove 17 is provided at the bottom of the connecting ring groove 16. Water supply pipe 2 is provided with an elastic element 3 12, located at the end of water supply pipe 2 near water supply pipe 1. The elastic element 3 12 is annular and corresponds to the connecting ring groove 16. The size of the elastic element 3 12 is larger than the size of the connecting ring groove 16. A gradually expanding surface 18 is provided at the end of the elastic element 3 12 near the bottom of the connecting ring groove 16. The cross-sectional area of ​​the gradually expanding surface 18 gradually increases along the end away from the bottom of the connecting ring groove 16, making it easier for the elastic element 3 12 to be embedded into the connecting ring groove 16. In actual use, water supply pipe 1 and water supply pipe 2 have the same structure.

[0038] When the elastic element 12 is embedded in the connecting ring groove 16, since the size of the elastic element 12 is larger than the size of the connecting ring groove 16, when the water supply pipe 1 and the water supply pipe 2 are pressed together, the elastic element 12 is embedded in the connecting ring groove 16 and presses against the inner wall of the connecting ring groove 16. Meanwhile, the end of the elastic element 12 near the bottom of the connecting ring groove 16 undergoes elastic deformation due to compression and embeds into the sealing ring groove 17. The gradually expanding surface 18 not only makes it easier for the elastic element 12 to embed into the connecting ring groove 16, but also makes it easier for the elastic element 12 to embed into the sealing ring groove 17 when it deforms. In practical use, the elastic element 12 can be made of rubber, or alternatively, silicone.

[0039] Example 2: A connection structure for a water supply pipeline differs from Embodiment 1 in that: See Figure 4 and Figure 5 Water supply pipe 1 includes two square tubes 19, each corresponding to one side of the other. Each square tube 19 has a closing plate 20, hinged to the inner wall of the square tube 19. The closing plate 20 has a magnetic component 21, and the square tube 19 has a magnetic component 22 and a magnetic component 23. Magnetic component 22 is located on the side of the square tube 19 closest to the fixing component 9, and magnetic component 23 is located on the side of the square tube 19 furthest from the fixing component 9. The magnetic force of magnetic component 21 and magnetic component 22 is less than the force required for the closing plate 20 to abut against the side of the square tube 19 closest to the fixing component 9. In actual use, water supply pipe 2 is constructed identically to water supply pipe 1. When connecting pipe 3 connects water supply pipe 1 and water supply pipe 2, connecting pipe 3 is sleeved on the square tube 19 of water supply pipe 1 near the end of water supply pipe 2 and the square tube 19 of water supply pipe 2 near the end of water supply pipe 1.

[0040] The fixing component 9 is equipped with a magnet 24, which is located at one end of the axis of the square tube 19 of the fixing component 9. When the fixing component 9 is fixed and liquid flows, as the liquid moves from the first water supply pipe 1 towards the second water supply pipe 2, the liquid causes the closing plate 20 to rotate until the first magnetic component 21 and the second magnetic component 22 are attracted to each other, and the first magnetic component 21 and the magnet 24 attract each other. At this time, the closing plate 20 abuts against the side of the square tube 19 closest to the fixing component 9. In actual use, the first magnetic component 21 can be a magnetic block, and the second magnetic component 22 and the third magnetic component 23 can be made of iron; alternatively, the first magnetic component 21 can also be made of iron, and the second magnetic component 22 and the third magnetic component 23 can be magnetic blocks.

[0041] When water supply pipe maintenance is required, the fixing part 9 needs to be removed. At this time, magnetic part 1 21 and magnetic part 2 22 are attracted together, and there is no force between magnetic part 1 21 and magnet 24. Since the attraction force between magnetic part 1 21 and magnetic part 2 22 is insufficient to keep the closing plate 20 attached to the inner wall of the square tube 19, the closing plate 20 rotates towards the side closer to the axis of the square tube 19 and away from the fixing part 9. When the closing plate 20 rotates to the inner wall of the square tube 19 that is perpendicular to the end of the square tube 19 that is close to the fixing part 9, and magnetic part 1 21 and magnetic part 3 23 are attracted together, the closing plate 20 closes the square tube 19. This reduces the need to drain the liquid inside the water supply pipe during water supply pipe maintenance and reduces the waste of water resources.

[0042] A construction method for a water supply pipeline includes the aforementioned connection structure and the following construction steps: A trench is excavated at the location where the water supply pipeline needs to be installed. Water supply pipe 1 and water supply pipe 2 are placed inside. The end of water supply pipe 1 closest to water supply pipe 2 is embedded in the installation channel 4, and the end of water supply pipe 2 closest to water supply pipe 1 is embedded in the installation channel 4, with the ends of water supply pipe 1 and 2 in contact. At this time, elastic element 3 12 is embedded in the connecting ring groove 16 and deforms to press against the connecting ring groove 16 and is embedded in the sealing ring groove 17. Then, fixing element 9 is used to secure the connecting pipe 3. After connecting water supply pipe 1 and water supply pipe 2, backfilling is performed, leaving part of the connecting pipe 3 exposed. Backfilling is done after a pressure test. A pressure test is performed when the water supply pipeline is laid for approximately one kilometer. Before the pressure test, the bends in the water supply pipeline are checked and must pass inspection before the pressure test can proceed. The above process is repeated until the final backfilling is completed.

[0043] The working principle of this embodiment is as follows: When connecting water supply pipe 1 and water supply pipe 2, water supply pipe 1 and water supply pipe 2 are inserted into the connecting channel, ensuring they are pressed against each other. At this time, elastic element 3 12 is inserted into the connecting ring groove 16. Since the size of elastic element 3 12 is larger than the size of the connecting ring groove 16, the elastic element is inserted into the sealing ring groove 17 while pressing against the connecting ring groove 16, achieving a double-layer seal and reducing the possibility of water supply pipe 1 and water supply pipe 2 separating. Subsequently, the connecting pipe 3 and water supply pipe 1 are fixed by the fixing element 9, reducing the possibility of water supply pipe 1 moving away from water supply pipe 2.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure for a water supply pipe, comprising a first water supply pipe (1) and a second water supply pipe (2), characterized in that: It also includes a connecting pipe (3), the inner diameter of which is the same as the outer diameter of the first water supply pipe (1), the inner diameter of which is the same as the outer diameter of the second water supply pipe (2), the end of the first water supply pipe (1) near the second water supply pipe (2) is embedded in the connecting pipe (3), the end of the second water supply pipe (2) near the first water supply pipe (1) is embedded in the connecting pipe (3), and the end of the first water supply pipe (1) embedded in the connecting pipe (3) abuts against the end of the second water supply pipe (2) embedded in the connecting pipe (3); The connecting pipe (3) is provided with mounting hole 1 (7), mounting hole 2 (8) and fixing member (9). Mounting hole 1 (7) is located on the side of the connecting pipe (3) close to water supply pipe 1 (1). Mounting hole 2 (8) is located on the side of the connecting pipe (3) close to water supply pipe 2 (2). Water supply pipe 1 (1) is provided with mounting groove 1 (5), which corresponds to mounting hole 1 (7). Water supply pipe 2 (2) is provided with mounting groove 2 (6), which corresponds to mounting hole 2 (8). There are two fixing members (9). One fixing member (9) passes through mounting hole 1 (7) and is embedded in mounting groove 1 (5). The other fixing member (9) passes through mounting hole 2 (8) and is embedded in mounting groove 2 (6). The mounting hole 1 (7) has a limiting groove (13) on its side wall. The limiting groove (13) is located on the side of the mounting hole 1 (7) away from the water supply pipe 2 (2). The bottom of the limiting groove (13) has an elastic element 1 (10). The elastic force of the elastic element 1 (10) causes the fixing element (9) to press against the side wall of the mounting hole 1 (7) near the water supply pipe 2 (2). The fixing member (9) has a fixing groove (25) on its side wall, and the fixing groove (25) corresponds to the position of the limiting groove (13); the elastic member one (10) has a limiting block (14) at one end near the water supply pipe two (2), and the limiting block (14) is embedded in the fixing groove (25). The limiting block (14) is provided with a guide part (15). The guide part (15) is located at one end of the limiting block (14) near the bottom of the fixing groove (25) and at one end of the limiting block (14) away from the mounting groove (5). The cross-sectional area of ​​the guide part (15) gradually increases along the direction away from the bottom of the fixing groove (25). The fixing member (9) is provided with an elastic element two (11), the elastic element two (11) is located on the side wall of the fixing member (9), and the elastic element two (11) abuts against the groove wall of the mounting groove one (5); The fixing member (9) is provided with a magnet (24). The magnet (24) is located at one end of the fixing member (9) near the bottom of the mounting groove (5). The water supply pipe (1) includes a square tube (19). There are two square tubes (19). Each square tube (19) is provided with a closing plate (20). The closing plate (20) is hinged to the inner wall of the square tube (19). The closing plate (20) is provided with a magnetic component (21). The square tube (19) is provided with a magnetic component (22) and a magnetic component (23). The magnetic component (22) is located on the side of the square tube (19) near the fixing member (9). The magnetic component (23) is located on the side of the square tube (19) away from the fixing member (9). When the magnetic component one (21) and the magnetic component two (22) are attracted to each other, and the magnetic component one (21) and the magnet (24) attract each other, the closing plate (20) abuts against the side of the square tube (19) close to the fixing component (9); when the magnetic component one (21) and the magnetic component two (22) are attracted to each other, and the magnetic component one (21) and the magnet (24) have no force, the closing plate (20) rotates toward the side of the square tube (19) away from the fixing component (9); when the magnetic component one (21) and the magnetic component three (23) are attracted to each other, the closing plate (20) restricts the liquid from flowing out of the square tube (19).

2. The connection structure of a water supply pipeline according to claim 1, characterized in that: The first water supply pipe (1) is provided with a connecting ring groove (16) at one end near the second water supply pipe (2), and the second water supply pipe (2) is provided with an elastic element (12) at one end near the first water supply pipe (1). The size of the elastic element (12) is larger than the size of the connecting ring groove (16). The third elastic element (12) is provided with a gradually expanding surface (18) at one end near the bottom of the connecting ring groove (16). The cross-sectional area of ​​the gradually expanding surface (18) gradually increases along the end away from the bottom of the connecting ring groove (16).

3. The connection structure of a water supply pipeline according to claim 2, characterized in that: The water supply pipe (1) is provided with a sealing ring groove (17), the sealing ring groove (17) is located at the bottom of the connecting ring groove (16), and the opening of the sealing ring groove (17) faces the elastic element (12); When the elastic element three (12) is embedded in the connecting ring groove (16), the end of the elastic element three (12) near the bottom of the connecting ring groove (16) undergoes elastic deformation and is embedded in the sealing ring groove (17).

4. A method for constructing a water supply pipeline, characterized in that: The connection structure of the water supply pipeline according to any one of claims 1-3 further includes the following construction steps: In the place where water supply pipes need to be installed, dig a trench, put water supply pipe one (1) and water supply pipe two (2) in, and connect water supply pipe one (1) and water supply pipe two (2) through connecting pipe (3); After completing the connection between water supply pipe 1 (1) and water supply pipe 2 (2), the soil covering operation is carried out. When covering the soil, leave the connecting pipe (3) part. After the pressure test, the soil is filled. When the water supply pipeline is laid for about one kilometer, the pressure test is carried out. Before the pressure test, check the bends in the water supply pipeline. The pressure test can only be carried out after the bends are qualified.

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