Anti-clogging rainwater conveying pipeline

Abstract

The invention provides an anti-clogging rainwater conveying pipeline and belongs to the technical field of municipal engineering. Comprising a rainwater pipe joint and a reducing pressure regulating joint, the two ends of the variable-diameter pressure adjusting joint are connected to the rainwater pipe joint through flanges, and the inner diameter of the variable-diameter pressure adjusting joint is adjustable. The reducing pressure regulating joint is arranged and connected with the rainwater pipe joint to form a pipeline structure, the inner diameter size of the reducing pressure regulating joint can be automatically regulated according to the water flow, so that the water flow speed or the pipeline flow is increased, and the rainwater conveying pipeline is effectively prevented from being blocked; by arranging the desilting device, sediments in the pipeline can be effectively cleaned in time, and the drainage performance of the pipeline is ensured; the whole structure is stable in connection and reliable in operation, and a good anti-clogging effect is achieved.

Description

Technical Field

[0001] This invention belongs to the field of municipal engineering technology, and in particular relates to a rainwater conveying pipe that prevents siltation. Background Technology

[0002] In municipal drainage systems, clogging of stormwater conveyance pipes has always been a key factor affecting drainage efficiency. Long-distance stormwater conveyance pipes, in particular, are highly susceptible to clogging due to variations in water flow velocity and sediment deposition, especially at bends and changes in slope. This not only reduces the pipes' drainage capacity but also increases maintenance costs. During heavy rainfall, clogged pipes can lead to urban flooding, severely impacting residents' lives and traffic safety. Current technologies typically employ manual periodic dredging or the establishment of fixed slopes to reduce clogging, but these methods suffer from high dredging costs and lack of flexibility, making them unsuitable for adapting to varying flow conditions and clogging prevention needs. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an anti-clogging rainwater conveying pipe that can effectively prevent clogging of the rainwater conveying pipe; at the same time, it can promptly and effectively clean up the silt inside the pipe, ensuring the drainage performance of the pipe.

[0004] The technical solution adopted in this invention is: a rainwater conveying pipe for preventing clogging, comprising a rainwater pipe section and a variable diameter pressure regulating section; the two ends of the variable diameter pressure regulating section are connected to the rainwater pipe section through flanges, and its inner diameter is adjustable.

[0005] Furthermore, the variable diameter pressure regulating joint includes an annular fixed seat and an inner variable diameter ring; the inner ring side of the annular fixed seat is provided with a limiting groove; at least a portion of the inner variable diameter ring is embedded in the limiting groove and is capable of radial deformation.

[0006] Furthermore, both the annular fixing seat and the inner diameter changing ring are made of rubber.

[0007] Furthermore, the variable diameter pressure regulating joint also includes an elastic element, the two ends of which are respectively connected to the limiting groove and the inner variable diameter ring.

[0008] Furthermore, the limiting groove includes a positioning ring and a guide wall. The guide wall is disposed at both ends of the positioning ring in the axial direction and extends radially along the variable diameter pressure regulating joint. The two ends of the inner variable diameter ring slide against the guide wall.

[0009] Furthermore, one end of the elastic element is connected to the positioning ring, and the other end is connected to the outer ring wall of the inner diameter variable ring, and they are evenly arranged along the circumference of the inner diameter variable ring.

[0010] Furthermore, the variable diameter pressure regulating joint also includes a frame, with flanges provided on the outer sides of both ends of the frame; the annular fixing seat is disposed on the inner side of the frame and is interference-fitted with the frame.

[0011] Furthermore, it also includes a dredging device, which includes a water storage ring surrounding the outside of the rainwater pipe section. The water storage ring has a water storage cavity, which is connected to the rainwater pipe section through an inlet and an outlet located on the rainwater pipe section. The inlet is equipped with a one-way valve, and the outlet is equipped with a micro pump, a rotary nozzle, and a solenoid valve.

[0012] Furthermore, the inlet is located at the bottom end of the rainwater pipe section, and the outlet is located at the top end of the rainwater pipe section.

[0013] Furthermore, it also includes distributed optical fiber sensors, which are dispersed on the outside of the rainwater pipe section to monitor the vibration status of the rainwater pipe section.

[0014] The advantages and positive effects of this invention are:

[0015] (1) The present invention sets up a variable diameter pressure regulating joint, which is connected to the rainwater pipe section to form a pipeline structure. The inner diameter of the variable diameter pressure regulating joint can be automatically adjusted according to the water flow rate to increase the water flow velocity or increase the pipeline flow rate, thereby effectively preventing the rainwater conveying pipeline from becoming blocked.

[0016] (2) By setting up a variable diameter pressure regulating joint including a skeleton, annular fixed seat, elastic element and inner variable diameter ring, the radial deformation of the inner variable diameter ring and the effective control of the limit range of radial deformation are realized. The inner variable diameter ring slides against the annular fixed seat, achieving a good sealing effect, ensuring the overall structure connection is stable and the operation is reliable, and improving its applicability and service life in rainwater flow environment.

[0017] (3) By setting up a dredging device, the water in the pipeline is fully utilized as a water source. The high-pressure water flow impact effectively cleans up the silt in the pipeline, reducing the need for manual dredging and significantly reducing the maintenance cost of the pipeline. By setting up distributed fiber optic sensors, the vibration state of the pipeline can be monitored in a timely manner, thereby accurately identifying the location and thickness of the siltation. This enables the dredging device to work together to achieve automated operation, improving the timeliness, accuracy and effectiveness of dredging. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a variable diameter pressure regulating section according to a specific embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram showing the connection between the annular fixed base and the inner variable diameter ring according to a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection between a rainwater pipe section and a dredging device according to a specific embodiment of the present invention.

[0022] In the picture:

[0023] 1. Rainwater pipe section; 2. Variable diameter pressure regulating joint; 21. Skeleton; 22. Annular fixing seat; 221. Positioning ring; 222. Guide wall; 23. Inner variable diameter ring; 24. Elastic element; 3. Dredging device; 31. Water storage ring; 32. Inlet; 33. Outlet; 34. One-way valve; 35. Nozzle; 36. Micro pump; 37. Solenoid valve; 4. Distributed fiber optic sensor. Detailed Implementation

[0024] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] This invention proposes an anti-clogging rainwater conveying pipe for use in municipal engineering rainwater conveying pipes. By setting up a variable diameter pressure regulating joint, the inner diameter can be automatically adjusted based on the water flow rate in the rainwater pipe, thereby increasing or decreasing the water flow velocity. This allows the water flow to impact the pipe wall to prevent siltation or to facilitate rapid water flow dispersion, solving the problem of clogging that easily occurs in existing rainwater conveying pipes due to changes in water flow velocity and silt deposition. At the same time, by setting up a sludge removal device, silt deposits accumulated at pipe bends and slope changes can be dispersed, thereby removing silt from the pipe and ensuring the drainage effect of the rainwater pipe.

[0026] like Figure 1 As shown in the figure, this embodiment of the invention proposes an anti-clogging rainwater conveying pipeline, including a rainwater pipe section 1 and a variable diameter pressure regulating section 2. Both ends of the variable diameter pressure regulating section 2 are connected to the rainwater pipe section 1 via flanges, and it is used to install at locations where the water flow velocity changes. The inner diameter of the variable diameter pressure regulating section 2 is adjustable. Both the rainwater pipe section 1 and the variable diameter pressure regulating section 2 are tubular structures with open ends, and both are equipped with flanges at their connecting ends, forming a connected and sealed conveying pipeline structure for rainwater flow within the pipeline. The variable diameter pressure regulating section 2 can automatically adjust its inner diameter according to the water flow rate. When the water flow rate is low, the inner diameter is adjusted to be smaller, thereby increasing the water flow velocity and creating a greater impact force on the pipe wall to prevent siltation. When the water flow rate is high, the inner diameter of the variable diameter pressure regulating section 2 is adjusted to be larger, increasing the flow area of ​​the pipeline and allowing more water to pass through, thus enabling rapid water flow through the pipeline for dispersion. Therefore, by setting up a variable diameter pressure regulating joint 2 and automatically adjusting the inner diameter according to the water flow rate, the water flow velocity or the pipeline flow rate can be increased, thereby effectively preventing the rainwater conveying pipeline from becoming blocked.

[0027] In the above embodiments, the number of variable diameter pressure regulating joints 2 can be selectively set according to the length requirements of the rainwater conveying pipeline. For example, when the rainwater conveying pipeline is short, one variable diameter pressure regulating joint 2 can be set; when the rainwater conveying pipeline is long, multiple variable diameter pressure regulating joints 2 can be set. In this case, the variable diameter pressure regulating joints 2 can be evenly set between the rainwater pipe sections 1 along the length direction of the pipeline, or more variable diameter pressure regulating joints 2 can be set in the parts that are prone to clogging. There is no limitation here.

[0028] Furthermore, in the embodiments of this application, such as Figure 2 , Figure 3 As shown, the variable diameter pressure regulating joint 2 includes an annular fixed seat 22 and an inner variable diameter ring 23. The inner ring of the annular fixed seat 22 is provided with a limiting groove. At least a portion of the inner variable diameter ring 23 is embedded in the limiting groove and is capable of radial deformation. Both the annular fixed seat 22 and the variable diameter pressure regulating joint 2 have an outer ring and an inner ring, wherein the outer ring is closer to the outer side of the pipe and the inner ring is closer to the inner side of the pipe. The limiting groove is set on the inner ring of the annular fixed seat 22 that is closer to the pipe, so that the inner ring wall of the inner variable diameter ring 23 in the limiting groove becomes the inner pipe wall of the variable diameter pressure regulating joint 2, which can directly contact the water flow and undergo radial deformation by the squeezing of the water flow, thereby adjusting the inner diameter of the variable diameter pressure regulating joint 2. By setting the limiting groove, the inner variable diameter ring 23 is allowed to undergo radial deformation, the direction of deformation is limited, and at the same time, the inner variable diameter ring 23 is still at least partially fixed in the limiting groove after deformation, preventing the inner variable diameter ring 23 from falling off, making the connection more reliable.

[0029] In one specific embodiment, when the water flow rate in the pipe is moderate, the inner ring wall of the inner diameter reducing ring 23 is flush with the inner wall of the rainwater pipe section 1; when the water flow rate in the pipe is small, the inner ring wall of the inner diameter reducing ring 23 experiences less compressive force, thus allowing it to deform radially inward, resulting in a smaller inner diameter; when the water flow rate in the pipe is large, the inner ring wall of the inner diameter reducing ring 23 experiences greater compressive force, allowing it to deform radially outward, resulting in a larger inner diameter. By reasonably setting the distance between the inner and outer ring walls of the inner diameter reducing ring 23, that is, the thickness of the inner diameter reducing ring 23, it is possible to ensure that regardless of how the inner diameter reducing ring 23 undergoes radial deformation, a portion of it remains within the limiting groove.

[0030] In one specific embodiment, both the annular fixing seat 22 and the inner reducing ring 23 are made of rubber. This gives the inner reducing ring 23 high elasticity and flexibility, allowing it to deform significantly under stress and respond quickly after the external force is removed or changed, ensuring the continuous effectiveness of the radial deformation of the inner reducing ring 23. Simultaneously, the use of rubber also provides both with good corrosion resistance, good temperature adaptability, wear resistance, tear resistance, as well as good mechanical strength and aging resistance, ensuring the applicability of the reducing pressure regulating joint 2 in rainwater flow environments.

[0031] Furthermore, the variable diameter pressure regulating joint 2 also includes an elastic element 24, with its two ends connected to the limiting groove and the inner variable diameter ring 23, respectively. The elastic element 24 is used to control the limit range of radial deformation of the inner variable diameter ring 23, ensuring that the inner variable diameter ring 23 will not be difficult to recover due to excessive outward deformation, and also preventing it from dislodging from the limiting groove due to excessive inward deformation. This ensures that the inner variable diameter ring 23 is always partially located within the limiting groove, allowing it to adjust the inner diameter of the variable diameter pressure regulating joint 2 more consistently and stably.

[0032] Furthermore, the limiting groove includes a positioning ring 221 and a guide wall 222. The guide wall 222 is disposed at both ends of the positioning ring 221 in the axial direction and extends radially along the variable diameter pressure regulating joint 2. The two ends of the inner variable diameter ring 23 slide against the guide wall 222. The positioning ring 221 and the guide wall 222 are connected to form a U-shaped limiting groove, and the opening of the U-shaped limiting groove faces the inner side of the variable diameter pressure regulating joint 2. The two ends of the inner variable diameter ring 23 in the axial direction slide against the inner wall of the guide wall 222, forming a sealing effect between them. This can prevent water from flowing into the space between the inner variable diameter ring 23 and the positioning ring 221 from the gap between the inner variable diameter ring 23 and the guide wall 222, thus avoiding affecting the radial deformation of the inner variable diameter ring 23.

[0033] In the above embodiments, by reasonably setting the axial width of the inner variable diameter ring 23 and the distance between the guide wall 222, the inner variable diameter ring 23 can be squeezed by the guide wall 222 to form a sealed connection; at the same time, by controlling the magnitude of the squeezing force and the smoothness between the contact surfaces, the two can slide relative to each other.

[0034] Furthermore, one end of the elastic element 24 is connected to the positioning ring 221, and the other end is connected to the outer ring wall of the inner diameter ring 23, and is evenly arranged along the circumference of the inner diameter ring 23. Through this arrangement, the direction of deformation and displacement of the inner diameter ring 23 can be effectively controlled, so that the inner diameter ring 23 is subjected to more balanced force.

[0035] Furthermore, in this embodiment, as Figure 2As shown, the variable diameter pressure regulating joint 2 also includes a frame 21, with flanges on both outer ends of the frame 21; an annular fixing seat 22 is disposed inside the frame 21 and is interference-fitted with the frame 21. The frame 21 is a tubular structure with open ends, and flanges are provided at both ends of its outer wall for alignment and connection with the flanges of the rainwater pipe section 1; the annular fixing seat 22 is disposed inside the frame 21, and the friction generated by the interference fit can limit the relative axial movement of the annular fixing seat 22 and the frame 21, thereby achieving a positioning function; the outer diameter of the annular fixing seat 22 is slightly larger than the inner diameter of the frame 21. During installation, the annular fixing seat 22 is deformed by external force and embedded into the frame 21, relying on the elastic restoring force to form a tight contact between the two, making installation convenient and connection reliable; preferably, the frame 21 is made of a material with high rigidity, which can provide sufficient support for the annular fixing seat 22 and achieve the positioning function of the annular fixing seat 22; exemplary, the frame 21 is made of steel pipe.

[0036] Furthermore, the anti-clogging rainwater conveying pipe proposed in this application embodiment also includes a sludge removal device 3, used to remove silt deposits inside the rainwater conveying pipe and prevent pipe blockage; such as Figure 1 , Figure 4 As shown, the dredging device 3 includes a water storage ring 31 surrounding the outside of the rainwater pipe section 1. The water storage ring 31 has a water storage chamber, which is connected to the rainwater pipe section 1 through an inlet 32 ​​and an outlet 33. The inlet 32 ​​is equipped with a one-way valve 34, and the outlet 33 is equipped with a micro pump 36, a rotary nozzle 35, and a solenoid valve 37. By setting the one-way valve 34, the water in the pipe can enter the water storage chamber in one direction. By setting the micro pump, the rotary nozzle 35, and the solenoid valve 37, the outlet 33 can be opened when needed, so that the water in the water storage chamber is sprayed out from the rotary nozzle 35 under the action of the micro pump, continuously impacting the inside of the pipe with high pressure, thereby breaking up the silt and discharging it with the water in the pipe, thus achieving active cleaning of the inner wall of the pipe. This setup eliminates the need for an additional water supply system, fully utilizing the water within the pipes as a source. High-pressure water jets effectively clean the silt deposits within the pipes, reducing the need for manual dredging and significantly lowering pipe maintenance costs.

[0037] Preferably, the dredging device 3 is installed at locations where rainwater pipes are prone to clogging, such as bends or changes in slope.

[0038] In one specific embodiment, the rainwater pipe section 1 is made of galvanized steel pipe, and the water storage ring 31 is also made of steel and has a water storage cavity with the opening facing inward. The inner diameter of the water storage ring 31 is adapted to the outer diameter of the rainwater pipe section 1 and is welded to the outside of the inlet 32 ​​and outlet 33 of the rainwater pipe section 1, so that the inlet 32 ​​and outlet 33 are connected to the water storage cavity. The one-way valve 34 is embedded in the inlet 32, and the micro water pump, solenoid valve 37 and rotary nozzle 35 are arranged in sequence at the outlet 33. By setting the rotary nozzle 35, water can be sprayed from different directions to the inner wall of the pipe to achieve a good cleaning effect.

[0039] Furthermore, in this embodiment, the inlet 32 ​​is located at the bottom of the rainwater pipe section 1, and the outlet 33 is located at the top of the rainwater pipe section 1. This arrangement ensures that even when the flow rate is low, the water can still flow into the water storage chamber from the inlet 32, which can meet the requirements of water circulation and spraying.

[0040] Furthermore, such as Figure 1 As shown in the figure, the anti-clogging rainwater conveying pipeline proposed in this application embodiment also includes distributed optical fiber sensors 4. The distributed optical fiber sensors 4 are dispersedly arranged on the outside of the rainwater pipe section 1 to monitor the vibration state of the rainwater pipe section 1. It can be understood that when water flows through the pipeline, it will cause the pipeline to vibrate, forming the inherent vibration characteristics of the pipeline; when there is silt in the pipeline, this inherent vibration characteristic will change accordingly. By setting up the distributed optical fiber sensors 4, the changes in the vibration state of the pipeline can be sensed in real time, thereby accurately identifying the location and thickness of the siltation.

[0041] Preferably, in the above embodiments, the rainwater conveying pipeline for preventing siltation proposed in this application also includes a controller. The controller is connected to the distributed fiber optic sensor 4, the one-way valve 34, the micro pump 36, the rotary nozzle 35, and the solenoid valve 37. It can receive real-time monitoring data transmitted by the distributed fiber optic sensor 4 and compare and analyze it with the pipeline vibration state-siltation thickness parameter preset in the controller. Based on this, it can determine the location of the siltation and the thickness of the siltation. It controls the one-way valve 34 at the inlet 32 ​​at the corresponding location to open, allowing water to flow into the water storage chamber. At the same time, it controls the micro pump 36, the rotary nozzle 35, and the solenoid valve 37 at the outlet 33 to open, spraying high-pressure water from different directions onto the inner wall of the pipeline to promptly disperse the silt and clean the inner wall of the pipeline at that location. Through this setting, the silt removal device 3 can operate automatically according to the siltation situation, improving the timeliness, accuracy, and effectiveness of silt removal.

[0042] The advantages and positive effects of this invention are:

[0043] (1) The present invention sets up a variable diameter pressure regulating joint, which is connected to the rainwater pipe section to form a pipeline structure. The inner diameter of the variable diameter pressure regulating joint can be automatically adjusted according to the water flow rate to increase the water flow velocity or increase the pipeline flow rate, thereby effectively preventing the rainwater conveying pipeline from becoming blocked.

[0044] (2) By setting up a variable diameter pressure regulating joint including a skeleton, annular fixed seat, elastic element and inner variable diameter ring, the radial deformation of the inner variable diameter ring and the effective control of the limit range of radial deformation are realized. The inner variable diameter ring slides against the annular fixed seat, achieving a good sealing effect, ensuring the overall structure connection is stable and the operation is reliable, and improving its applicability and service life in rainwater flow environment.

[0045] (3) By setting up a dredging device, the water in the pipeline is fully utilized as a water source. The high-pressure water flow impact effectively cleans up the silt in the pipeline, reducing the need for manual dredging and significantly reducing the maintenance cost of the pipeline. By setting up distributed fiber optic sensors, the vibration state of the pipeline can be monitored in a timely manner, thereby accurately identifying the location and thickness of the siltation. This enables the dredging device to work together to achieve automated operation, improving the timeliness, accuracy and effectiveness of dredging.

[0046] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A rainwater conveying pipe designed to prevent clogging, characterized in that: It includes a rainwater pipe section and a variable diameter pressure regulating joint; the two ends of the variable diameter pressure regulating joint are connected to the rainwater pipe section through flanges, and its inner diameter is adjustable.

2. The anti-clogging rainwater conveying pipe according to claim 1, characterized in that: The variable diameter pressure regulating joint includes an annular fixed seat and an inner variable diameter ring; the inner ring side of the annular fixed seat is provided with a limiting groove; at least a portion of the inner variable diameter ring is embedded in the limiting groove and is capable of radial deformation.

3. The anti-clogging rainwater conveying pipe according to claim 2, characterized in that: Both the annular fixing seat and the inner diameter changing ring are made of rubber.

4. The anti-clogging rainwater conveying pipe according to claim 3, characterized in that: The variable diameter pressure regulating joint also includes an elastic element, the two ends of which are respectively connected to the limiting groove and the inner variable diameter ring.

5. The anti-clogging rainwater conveying pipe according to claim 4, characterized in that: The limiting groove includes a positioning ring and a guide wall. The guide wall is disposed at both ends of the positioning ring along the axial direction and extends radially along the variable diameter pressure regulating joint. The two ends of the inner variable diameter ring slide against the guide wall.

6. The anti-clogging rainwater conveying pipe according to claim 5, characterized in that: One end of the elastic element is connected to the positioning ring, and the other end is connected to the outer ring wall of the inner diameter variable ring, and they are evenly arranged along the circumference of the inner diameter variable ring.

7. The anti-clogging rainwater conveying pipe according to any one of claims 2-6, characterized in that: The variable diameter pressure regulating joint also includes a frame, with flanges provided on the outer sides of both ends of the frame; the annular fixing seat is disposed on the inner side of the frame and is interference-fitted with the frame.

8. The anti-clogging rainwater conveying pipe according to claim 7, characterized in that: It also includes a dredging device, which includes a water storage ring surrounding the outside of the rainwater pipe section. The water storage ring has a water storage cavity, which is connected to the rainwater pipe section through an inlet and an outlet. The inlet is equipped with a one-way valve, and the outlet is equipped with a micro pump, a rotary nozzle, and a solenoid valve.

9. The anti-clogging rainwater conveying pipe according to claim 8, characterized in that: The inlet is located at the bottom of the rainwater pipe section, and the outlet is located at the top of the rainwater pipe section.

10. The anti-clogging rainwater conveying pipe according to claim 9, characterized in that: It also includes distributed optical fiber sensors, which are dispersed on the outside of the rainwater pipe section to monitor the vibration status of the rainwater pipe section.

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