A method for replacing a water pipe without stopping water supply

Abstract

The application provides a method for replacing water pipes without stopping water supply, and belongs to the technical field of urban construction. The method comprises the following steps: site investigation and positioning; determining the construction range; measuring and laying out the line in the area to be constructed; excavating and constructing the area to be constructed according to the laid-out line; reducing the water pressure of the water pipes; respectively opening branch outflow holes on the water pipes at both ends of the water pipes to be replaced; connecting the branch outflow holes of the water pipes by using a water supply connecting device, so that the two branch outflow holes are connected together; cutting off the water supply pipeline to be replaced in the construction area; installing a replacement water pipe to the cut-off position; removing the water supply connecting device from the water pipes at both ends of the water pipes to be replaced, and plugging the branch outflow holes; restoring the water pressure of the water pipes in the construction area; detecting the leakage of the pipeline in the construction area; backfilling and repairing the road surface. The application can replace the water pipes to be replaced without stopping water supply, and avoids affecting the life of residents.

Description

Technical Field

[0001] This invention belongs to the field of urban construction technology, and specifically relates to a method for replacing water pipes without interrupting water supply. Background Technology

[0002] As water pipes are constantly eroded by water, they may age, crack, or leak after prolonged use. They may also become clogged with mud, humus, or other substances, forming scale. This blockage affects water quality and pressure, and cannot be solved by cleaning. In such cases, the only solution is to cut and replace the affected section of the water pipe. However, the existing construction method for cutting and replacing water pipes requires shutting off the water supply valve before cutting. Improper operation during the water outage construction process can prolong the water outage time, inevitably affecting residents' water use and causing economic losses to water-using businesses.

[0003] As residents and production enterprises continue to raise their demands for water supply, minimizing the scope and duration of water outages, optimizing water outage plans, and minimizing or even eliminating water outages will greatly improve the quality of social services provided during construction operations. Summary of the Invention

[0004] In view of this, the present invention provides a method for replacing water pipes without interrupting the water supply, which enables the replacement of water pipes without interrupting the water supply and avoids affecting residents' lives.

[0005] This invention is implemented as follows:

[0006] This invention provides a method for replacing water pipes without interrupting water supply, comprising the following steps:

[0007] S01: Conduct on-site inspection and location of the water pipe to be replaced;

[0008] S02: Based on the results of the on-site investigation and analysis, determine the scope of construction, repair materials, and construction plan;

[0009] S03: Measure and set out the lines in the area to be constructed;

[0010] S04: Excavate the construction area according to the layout line to expose the water supply pipes that need to be replaced;

[0011] S05: Reduce water pressure in water pipes in the construction area;

[0012] S06: Branch outlet holes shall be made on the water pipes at both ends of the water pipe to be replaced;

[0013] S07: Use a water supply connection device to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch;

[0014] S08: Cut off the water supply pipes that need to be replaced in the construction area;

[0015] S09: Install the replacement water pipe at the cut-off position;

[0016] S10: Remove the water supply connection device from the water pipes at both ends of the water pipe to be replaced, and seal the branch outlet hole mentioned above;

[0017] S11: Restore water pressure in the construction area's water pipes;

[0018] S12: Conduct leak detection on pipelines in the construction area;

[0019] S13: Ensure the replacement water pipe is sealed to both ends before backfilling and repairing the road surface.

[0020] Based on the above technical solution, the method for replacing water pipes without interrupting water supply according to the present invention can be further improved as follows:

[0021] The water supply connection device includes an inlet pipe, a water storage vehicle, and an outlet pipe. The water storage vehicle is a motor vehicle carrying a water tank. One end of the water tank on the water storage vehicle is connected to the inlet pipe, and the other end is connected to the outlet pipe. Fixed flanges are provided at the connection points of the inlet pipe and the outlet pipe with the water pipe for sealing. The ends of the inlet pipe and the outlet pipe have openable and closable water-blocking plates. The water-blocking plate includes a water-blocking membrane, a water-blocking skeleton, and a water-blocking skirt. The water-blocking membrane is a circular, foldable membrane made of flexible waterproof material. The water-blocking membrane has an opening slit that points from the circumference of the water-blocking membrane to its center. The outer diameter of the water-blocking membrane matches the inner diameter of the water pipe. The water-blocking skeleton is fixed to the water-blocking membrane along the radial direction. One end of the water-blocking skeleton near the center of the water-blocking membrane is fixedly connected to an opening and closing mechanism for unfolding and closing the water-blocking membrane.

[0022] Furthermore, the opening and closing mechanism includes a ring rail and an electric slider. The ring rail is a circular track with the same center as the water-blocking membrane. One end of each water-blocking frame near the center of the water-blocking membrane is fixedly connected to the electric slider. The electric slider is slidably connected to the ring rail. The ring rail is electrically connected to and powered by the control chip, the battery is electrically connected to the water-blocking plate and the control chip, and is capable of sealing the central hole of the water-blocking membrane.

[0023] Furthermore, the outer diameter edge of the water-blocking membrane is connected to a water-blocking skirt, the water-blocking skirt being made of the same material as the water-blocking membrane, and the thickness of the water-blocking skirt being less than that of the water-blocking membrane.

[0024] Furthermore, the fixed flange includes a connecting flange and a positioning flange. The connecting flange is connected to a pipe fixing cylinder. The inner diameter of the pipe fixing cylinder matches the outer diameter of the inlet pipe and the outlet pipe. A gasket is affixed at the connection between the pipe fixing cylinder and the connecting flange. The connecting flange and the positioning flange are fixedly connected by bolts.

[0025] Furthermore, the gasket is made of rubber.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are: by using a gasket, the gap between the water-blocking membrane and the inner diameter of the water pipe can be sealed, preventing water leakage and affecting the water pipe replacement construction.

[0027] Furthermore, in step S07, the process of using a water supply connection device to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch, specifically includes the following steps:

[0028] Step 1: Drive the water storage truck to the construction area;

[0029] Step 2: Align the pipe fixing sleeve of the connecting flange with the branch outlet hole, and align the positioning flange with the corresponding position of the connecting flange;

[0030] Step 3: Insert the unexpanded water-blocking plate from the pipe fixing cylinder into the branch outlet holes opened on both ends of the water pipe to be replaced. Align the inlet pipe and the outlet pipe with the branch outlet holes, unfold the water-blocking plate, and block the inside of the water pipe so that water no longer passes through the water pipe to be replaced.

[0031] Step 4: Use bolts to fix the connecting flange and the positioning flange on both ends of the water pipe to be replaced, so that the inlet pipe, the outlet pipe and the branch outlet are tightly connected. The water in the water pipe flows from one end of the water pipe into the water tank of the water storage vehicle through the inlet pipe, then flows from the water tank into the outlet pipe, and finally flows into the other end of the water pipe.

[0032] Furthermore, the connection between the water outlet pipe and the water tank of the water storage vehicle is equipped with a pressure pump.

[0033] The beneficial effects of adopting the above-mentioned improvement scheme are: by using a booster pump, the water supply pressure of the water flowing out of the tributary outlet is guaranteed, thus avoiding the impact of unstable water pressure on residents' water use.

[0034] The specific method for installing the replacement water pipe to the cut-off position in step S09 includes the following steps:

[0035] Step 1: Measure the length of the section of water pipe to be replaced;

[0036] Step 2: Roughly process the water pipe of the corresponding length measured in Step 1 so that it can be embedded in the water pipes at both ends;

[0037] Step 3: Secure the connection between the replacement water pipe and the two ends of the water pipe using a fixing device, which can be one of the following: threaded connection, snap ring connection, or rubber flexible connection.

[0038] Step 4: Weld the replacement water pipe to both ends of the water pipe together, ensuring the weld joint is flat.

[0039] The specific steps in S13, which involve ensuring the replacement water pipe is sealed to both ends before backfilling and repairing the road surface, are as follows:

[0040] Step 1: Backfill the trenches in the construction area with good-quality original soil;

[0041] The second step is to spread, compact, and tamp the soil in layers to ensure that the compaction degree of the backfill soil is greater than 90%.

[0042] The third step is to repair the damage to the ground and roads caused by the project by laying bricks or asphalt to create a protective layer.

[0043] Compared with the existing technology, the beneficial effects of the method for replacing water pipes without interrupting water supply provided by the present invention are as follows: Water pipe repair during water outages requires cutting the water supply pipes, followed by inspection, repair and replacement, which takes time. Especially when the pipeline system is more complex, the repair is more difficult, and the parts are not complete, the water outage time will be longer. By using a water supply connection device to connect the two ends of the water pipes that do not need to be replaced, the water supply can still be guaranteed during construction, avoiding water outages, avoiding the inconvenience of water shortage for residents, and avoiding economic losses to water-using businesses.

[0044] By adding a water storage vehicle between the inlet and outlet pipes, the water transfer process can be moved to avoid affecting traffic. At the same time, the water tank on the water storage vehicle can alleviate pressure fluctuations in the water pipe system, ensuring stable water pressure. The water tank can also reduce the impact of water flow in the water pipe system, thereby reducing wear and tear on pipes, valves, and equipment. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This invention provides a flowchart of a method for replacing water pipes without interrupting water supply;

[0047] Figure 2 This invention provides a schematic diagram of a water supply connection device for a method of replacing water pipes without interrupting water supply.

[0048] Figure 3 This is a schematic diagram of the fixed flange in a method for replacing water pipes without interrupting water supply, as provided by the present invention.

[0049] Figure 4 This is a schematic diagram illustrating the opening of the water-blocking plate in a method for replacing water pipes without interrupting water supply, as provided by the present invention.

[0050] Figure 5 This is a schematic diagram of the water-blocking plate being closed in a method for replacing water pipes without interrupting water supply, provided by the present invention.

[0051] Figure 6 The present invention provides an electrical connection diagram of a water supply connection device for a method of replacing water pipes without interrupting water supply.

[0052] The attached diagram lists the components represented by each number as follows:

[0053] 11. Inlet pipe; 12. Water storage vehicle; 13. Outlet pipe; 14. Water blocking plate; 141. Water blocking membrane; 142. Water blocking frame; 143. Water blocking skirt; 144. Ring rail; 145. Electric slider; 15. Control chip; 16. Battery; 20. Fixed flange; 21. Connecting flange; 211. Pipe fixing cylinder; 212. Gasket; 22. Positioning flange. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all embodiments. 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.

[0055] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] like Figure 1 The diagram shows a method for replacing water pipes without interrupting water supply, provided by the present invention, comprising the following steps:

[0060] S01: Conduct on-site inspection and location of the water pipe to be replaced;

[0061] S02: Based on the results of the on-site investigation and analysis, determine the scope of construction, repair materials, and construction plan;

[0062] S03: Measure and set out the lines in the area to be constructed;

[0063] S04: Excavate the construction area according to the layout line to expose the water supply pipes that need to be replaced;

[0064] S05: Reduce water pressure in water pipes in the construction area;

[0065] S06: Branch outlet holes shall be made on the water pipes at both ends of the water pipe to be replaced;

[0066] S07: Use a water supply connection device to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch.

[0067] S08: Cut off the water supply pipes that need to be replaced in the construction area;

[0068] S09: Install the replacement water pipe at the cut-off position;

[0069] S10: Remove the water supply connection device from both ends of the water pipe that needs to be replaced and block the outlet hole of the upper branch.

[0070] S11: Restore water pressure in the construction area's water pipes;

[0071] S12: Conduct leak detection on pipelines in the construction area;

[0072] S13: Ensure the replacement water pipe is sealed to both ends before backfilling and repairing the road surface.

[0073] The specific steps for opening branch outlet holes on the water pipes at both ends of the water pipe to be replaced in S06 are as follows:

[0074] After determining the location of the tributary outlet, use an electric drill to gradually increase the diameter of the hole.

[0075] In S04, the construction area is excavated according to the layout. After the water supply pipes that need to be replaced are exposed, the construction site needs to be cleaned. The exposed water pipe surfaces need to be cleaned, stones, gravel and rust are removed.

[0076] like Figure 2-6 As shown, in the above technical solution, the water supply connection device includes an inlet pipe 11, a water storage vehicle 12, and an outlet pipe 13. The water storage vehicle 12 is a motor vehicle carrying a water tank. One end of the water tank on the water storage vehicle 12 is connected to the inlet pipe 11, and the other end is connected to the outlet pipe 13. A fixed flange 20 is provided at the connection between the inlet pipe 11 and the outlet pipe 13 and the water pipe. The fixed flange 20 is used for sealing. The ends of the inlet pipe 11 and the outlet pipe 13 have an openable and closable water-blocking plate 14. The water-blocking plate 14 includes a water-blocking membrane 141. The water-blocking frame 142 and the water-blocking skirt 143 are included. The water-blocking membrane 141 is a circular foldable membrane made of flexible waterproof material. The water-blocking membrane 141 has an opening slit that points from the circumference of the water-blocking membrane 141 to the center of the water-blocking membrane 141. The outer diameter of the water-blocking membrane 141 matches the inner diameter of the water pipe. The water-blocking frame 142 is fixed to the water-blocking membrane 141 along the radial direction. One end of the water-blocking frame 142 near the center of the water-blocking membrane 141 is fixedly connected to the opening and closing mechanism, which is used to unfold and close the water-blocking membrane 141.

[0077] Furthermore, in the above technical solution, the opening and closing mechanism includes a ring rail 144 and an electric slider 145. The ring rail 144 is a circular track with the same center as the water-blocking membrane 141. One end of each water-blocking frame 142 near the center of the water-blocking membrane 141 is fixedly connected to the electric slider 145. The electric slider 145 is slidably connected to the ring rail 144. The ring rail 144 is electrically connected to the control chip 15, and the battery 16 is electrically connected to and powered by the water-blocking plate 14 and the control chip 15, and can block the central hole of the water-blocking membrane 141.

[0078] The control chip 15 is equipped with a Bluetooth module, which can be remotely controlled by a switch outside the water supply connection mechanism.

[0079] Furthermore, in the above technical solution, the outer diameter edge of the water-blocking membrane 141 is connected to a water-blocking skirt 143, the water-blocking skirt 143 is made of the same material as the water-blocking membrane 141, and the thickness of the water-blocking skirt 143 is less than that of the water-blocking membrane 141.

[0080] Furthermore, in the above technical solution, the fixed flange 20 includes a connecting flange 21 and a positioning flange 22. The connecting flange 21 is connected to a pipe fixing cylinder 211. The inner diameter of the pipe fixing cylinder 211 matches the outer diameter of the inlet pipe 11 and the outlet pipe 13. A gasket 212 is affixed at the connection between the pipe fixing cylinder 211 and the connecting flange 21. The connecting flange 21 and the positioning flange 22 are fixedly connected by bolts.

[0081] Furthermore, in the above technical solution, the gasket 212 is made of rubber.

[0082] Furthermore, in the above technical solution, S07 uses a water supply connection device to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch. The specific steps include:

[0083] Step 1: Drive the water storage truck 12 to the construction area;

[0084] Step 2: Align the pipe fixing sleeve 211 of the connecting flange 21 with the branch outlet hole, and align the positioning flange 22 with the corresponding position of the connecting flange 21.

[0085] Step 3: Insert the unexpanded water-blocking plate 14 from the pipe fixing cylinder 211 into the branch water outlet holes opened on both ends of the water pipe to be replaced. Align the inlet pipe 11 and outlet pipe 13 with the branch water outlet holes, unfold the water-blocking plate 14 so that the water-blocking plate 14 blocks the inside of the water pipe and the water no longer passes through the water pipe to be replaced.

[0086] Step 4: Use bolts to fix the connecting flange 21 and positioning flange 22 on both ends of the water pipe to be replaced, so that the inlet pipe 11 and outlet pipe 13 are tightly connected to the branch outlet hole. The water in the water pipe flows from one end of the water pipe through the inlet pipe 11 into the water tank of the water storage vehicle 12, then flows from the water tank into the outlet pipe 13, and finally flows into the other end of the water pipe.

[0087] Furthermore, in the above technical solution, a pressure pump is provided at the connection between the water outlet pipe 13 and the water tank of the water storage vehicle 12.

[0088] In use, the water-blocking plate 14 is inserted from the pipe fixing cylinder 211 on one end of the water pipe into the branch outlet. The water-blocking plate 14 drives the water inlet of the inlet pipe 11 to align with the branch outlet, sending an unfolding command to the control chip 15. The control chip 15 then sends a movement command to the electric sliders 145. Each electric slider 145 begins to move on the ring track 144 until the electric sliders 145 are evenly distributed on the ring track 144. At this point, the water-blocking skeleton 142 on the electric sliders 145 is evenly distributed along the radial direction of the center of the ring track 144, causing the water-blocking film 141 to unfold into a circle that matches the cross-section of the water pipe, thereby sealing the water pipe. The water flows forward, and the water-blocking skirt 143 completely fills the gap between the water-blocking membrane 141 and the inner diameter of the water pipe. The connecting flange 21 and the positioning flange 22 are connected together with screws, and the gasket 212 seals the gap between the branch outlet and the pipe fixing cylinder 211. The other end of the water pipe is fixed to the outlet pipe 13 as above. At this time, the water in the water pipe can only flow into the water tank of the water storage truck 12 from the branch outlet at the inlet pipe 11. The water is pressurized by the booster pump on the water storage truck 12 and pumped to the water pipe after the branch outlet at the outlet pipe 13. At this time, although the water pressure of the urban water supply is reduced, the flow continues, ensuring the use of residents.

[0089] After the replacement water pipe is connected, a closing command is sent to the control chip 15. The control chip 15 sends a reverse movement command to the electric slider 145. Each electric slider 145 starts to move in the opposite direction on the ring rail 144 until the electric sliders 145 are concentrated together on the ring rail 144. At this time, the water blocking skeletons 142 on the electric sliders 145 are concentrated, so that the water blocking membrane 141 closes and no longer blocks the inside of the water pipe. The water flows from one end of the water pipe into the replacement water pipe and then into the other end of the water pipe. Remove the screws on the connecting flange 21 and the positioning flange 22, loosen the connecting flange 21 and the positioning flange 22 from the water pipe, pull out the water blocking plate 14 in the water pipe, remove the fixing flange 20 on the water pipe, and seal the branch connection hole to ensure the use of the water pipe after it is connected.

[0090] In the above technical solution, the specific method for installing the replacement water pipe to the cut-off position in S09 includes the following steps:

[0091] Step 1: Measure the length of the section of water pipe to be replaced;

[0092] Step 2: Roughly process the water pipe of the corresponding length measured in Step 1 so that it can be embedded into the water pipes at both ends;

[0093] Step 3: Secure the connection between the replacement water pipe and the two ends of the water pipe using a fixing device. The fixing device can be one of the following: threaded connection, snap ring connection, or rubber flexible connection.

[0094] Step 4: Weld the replacement water pipe to both ends of the water pipe together, ensuring the weld joint is flat.

[0095] Typically, the embedded length is longer than the actual length of the replaced part.

[0096] The specific steps for welding the replacement water pipe to both ends in step four are as follows:

[0097] Choose the appropriate welding method. Commonly used methods include electric arc welding, gas welding, and TIG welding.

[0098] The ends of the pipe are ground smooth to remove oxides and grease.

[0099] Before welding, determine the current and power of the welding equipment according to the diameter of the water pipe, and prepare the corresponding welding equipment, such as electrodes, gas welding guns, tungsten wires, etc.

[0100] After ensuring a tight seal at both ends of the pipe, bring the welding torch close to both ends of the pipe and touch them to melt them. Apply pressure outwards into the pipe with the melted material at the suction port to melt it further and achieve a tight seal.

[0101] After welding is completed, check the quality of the welded joint to ensure that there is no water leakage and no residual oxides in the pipe. If the welded joint is found to be substandard, it should be cut off and re-welded.

[0102] In the aforementioned technical solution, the specific steps in S13 to ensure the road surface is backfilled and repaired after the replacement water pipe is sealed to both ends are as follows:

[0103] Step 1: Backfill the trenches in the construction area with good-quality original soil;

[0104] The second step is to spread, compact, and tamp the soil in layers to ensure that the compaction degree of the backfill soil is greater than 90%.

[0105] The third step is to repair the damage to the ground and roads caused by the project by laying bricks or asphalt to create a protective layer.

[0106] The area above 0.7m from the top of the water pipe foundation shall be backfilled manually; the area above 0.4m from the bottom of the water pipe to the top of the water pipe shall be backfilled with gravel with a particle size of less than 40mm or good quality original soil.

[0107] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for replacing water pipes without interrupting water supply, characterized in that, Includes the following steps: S01: Conduct on-site inspection and location of the water pipe to be replaced; S02: Based on the results of the on-site investigation and analysis, determine the scope of construction, repair materials, and construction plan; S03: Measure and set out the lines in the area to be constructed; S04: Excavate the construction area according to the layout line to expose the water supply pipes that need to be replaced; S05: Reduce water pressure in water pipes in the construction area; S06: Branch outlet holes shall be made on the water pipes at both ends of the water pipe to be replaced; S07: Use a water supply connection device to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch; S08: Cut off the water supply pipes that need to be replaced in the construction area; S09: Install the replacement water pipe at the cut-off position; S10: Remove the water supply connection device from the water pipes at both ends of the water pipe to be replaced, and seal the branch outlet hole mentioned above; S11: Restore water pressure in the construction area's water pipes; S12: Conduct leak detection on pipelines in the construction area; S13: Ensure the replacement water pipe is sealed to both ends before backfilling and repairing the road surface; The water supply connection device includes an inlet pipe (11), a water storage vehicle (12), and an outlet pipe (13). The water storage vehicle (12) is a motor vehicle carrying a water tank. One end of the water tank on the water storage vehicle (12) is connected to the inlet pipe (11), and the other end is connected to the outlet pipe (13). A fixed flange (20) is provided at the connection between the inlet pipe (11) and the outlet pipe (13) and the water pipe. The fixed flange (20) is used for sealing. The ends of the inlet pipe (11) and the outlet pipe (13) have an openable and closable water-blocking plate (14). The water-blocking plate (14) includes a water-blocking membrane (141) and a water-blocking skeleton. (142) and water-blocking skirt (143), the water-blocking membrane (141) is a circular foldable membrane made of flexible waterproof material, the water-blocking membrane (141) has an opening slit, the opening slit points along the circumference of the water-blocking membrane (141) to the center of the water-blocking membrane (141), the outer diameter of the water-blocking membrane (141) matches the inner diameter of the water pipe, the water-blocking membrane (141) is fixed with the water-blocking skeleton (142) along the radial direction, the end of the water-blocking skeleton (142) near the center of the water-blocking membrane (141) is fixedly connected to the opening and closing mechanism, the opening and closing mechanism is used to unfold and close the water-blocking membrane (141); The opening and closing mechanism includes a ring rail (144) and an electric slider (145). The ring rail (144) is a circular track with the same center as the water-blocking membrane (141). One end of each water-blocking frame (142) near the center of the water-blocking membrane (141) is fixedly connected to the electric slider (145). The electric slider (145) is slidably connected to the ring rail (144). The ring rail (144) is electrically connected to the control chip (15), and the battery (16) is electrically connected to and powered by the water-blocking plate (14) and the control chip (15), and can block the central hole of the water-blocking membrane (141).

2. The method for replacing water pipes without interrupting water supply according to claim 1, characterized in that, The outer diameter edge of the water-blocking membrane (141) is connected to a water-blocking skirt (143), the water-blocking skirt (143) is made of the same material as the water-blocking membrane (141), and the thickness of the water-blocking skirt (143) is less than that of the water-blocking membrane (141).

3. The method for replacing water pipes without interrupting water supply according to claim 1, characterized in that, The fixed flange (20) includes a connecting flange (21) and a positioning flange (22). The connecting flange (21) is connected to a pipe fixing cylinder (211). The inner diameter of the pipe fixing cylinder (211) matches the outer diameter of the water inlet pipe (11) and the water outlet pipe (13). A gasket (212) is affixed at the connection between the pipe fixing cylinder (211) and the connecting flange (21). The connecting flange (21) and the positioning flange (22) are fixedly connected by bolts.

4. The method for replacing water pipes without interrupting water supply according to claim 3, characterized in that, The gasket (212) is made of rubber.

5. The method for replacing water pipes without interrupting water supply according to claim 3, characterized in that, In step S07, the water supply connection device is used to connect the branch outlet holes of the water pipes at both ends of the water pipe to be replaced, so that the two branch outlet holes are connected together to form a new branch. The specific steps include: Step 1: Drive the water storage vehicle (12) to the construction area; Step 2: Align the pipe fixing cylinder (211) of the connecting flange (21) with the branch outlet hole, and align the positioning flange (22) with the corresponding position of the connecting flange (21); Step 3: Insert the unexpanded water-blocking plate (14) from the pipe fixing cylinder (211) into the branch outlet holes opened on the water pipes at both ends of the water pipe to be replaced. Align the inlet pipe (11) and the outlet pipe (13) with the branch outlet holes, and unfold the water-blocking plate (14) so ​​that the water-blocking plate (14) blocks the inside of the water pipe, and water no longer passes through the water pipe to be replaced. Step 4: Use bolts to fix the connecting flange (21) and the positioning flange (22) on both ends of the water pipe to be replaced, so that the inlet pipe (11) and the outlet pipe (13) are tightly connected to the branch outlet hole. The water in the water pipe flows from one end of the water pipe through the inlet pipe (11) into the water tank of the water storage vehicle (12), then flows from the water tank into the outlet pipe (13), and finally flows into the other end of the water pipe.

6. The method for replacing water pipes without interrupting water supply according to claim 5, characterized in that, The outlet pipe (13) is connected to the water tank of the water storage vehicle (12) by a pressure pump.

7. The method for replacing water pipes without interrupting water supply according to claim 1, characterized in that, The specific method for installing the replacement water pipe to the cut-off position in S09 includes the following steps: Step 1: Measure the length of the section of water pipe to be replaced; Step 2: Roughly process the water pipe of the corresponding length measured in Step 1 so that it can be embedded in the water pipes at both ends; Step 3: Secure the connection between the replacement water pipe and the two ends of the water pipe using a fixing device, which can be one of the following: threaded connection, snap ring connection, or rubber flexible connection. Step 4: Weld the replacement water pipe to both ends of the water pipe together, ensuring the weld joint is flat.

8. The method for replacing water pipes without interrupting water supply according to claim 1, characterized in that, The specific steps in S13 to ensure the replacement water pipe is sealed to both ends before backfilling and repairing the road surface are as follows: Step 1: Backfill the trenches in the construction area with high-quality original soil; The second step involves spreading, tamping, and compacting the soil in layers to achieve a compaction degree greater than 90%. The third step is to repair the damage to the ground and roads caused by the project by laying bricks or asphalt to create a protective layer.

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