Urban waterlogging monitoring and early warning device

Abstract

The application relates to the field of urban waterlogging monitoring, in particular to a city waterlogging monitoring and early warning device, which comprises a ring body and a column body; a cavity is arranged in the column body; the ring body is fixedly connected to one side of the column body; a water inlet is arranged at the position where the column body is fixedly connected with the ring body; the water inlet penetrates into the cavity; a capacitive electronic water gauge is arranged in the cavity; annular clamping grooves are arranged at the two end faces of the ring body; the clamping grooves are used for connecting rainwater pipes; compared with the water level monitoring through an ultrasonic wave generating device, the city waterlogging monitoring and early warning device can directly avoid the influence of impurities in rainwater on the capacitive electronic water gauge; meanwhile, the capacitive electronic water gauge is installed on one side of the rainwater pipe, so that the impact and damage of solid matters in rainwater on the capacitive electronic water gauge are avoided, and the stable operation of the city waterlogging monitoring and early warning device in a harsh environment is ensured.

Description

Technical Field

[0001] This invention relates to the field of urban flooding monitoring, specifically an urban flooding monitoring and early warning device. Background Technology

[0002] In response to urban flooding, it is necessary to gradually optimize the drainage system and improve the urban flooding monitoring and early warning system. This includes providing multiple ways to monitor flooding, such as meteorological monitoring, river monitoring, water accumulation monitoring, video monitoring, pipeline monitoring, emergency personnel (vehicles), drones, and public feedback.

[0003] Pipeline monitoring involves installing monitoring devices on rainwater pipes to monitor water levels and provide early warnings. For example, a published patent, CN107003175B, provides a device and method for monitoring water levels in pipes. This method involves installing multiple ultrasonic generating units on the pipe and checking for the presence of reflected ultrasonic waves. The water level is determined based on the presence of these reflected waves, enabling easy and simple long-term monitoring of water levels in the pipes using a non-destructive method. However, when rainwater fills the entire pipe, it can submerge the transmitting end of the ultrasonic generating unit. After the rainwater recedes, contaminants in the rainwater adhere to the transmitting end, obscuring it. Consequently, the ultrasonic generating unit cannot properly detect the water level in the pipe the next time it is used.

[0004] Therefore, an urban flooding monitoring and early warning device is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The urban flooding monitoring and early warning device of the present invention includes a ring and a column; a cavity is opened inside the column, the ring is fixedly connected to one side of the column, and a water inlet is opened at the position where the column is fixed to the ring, the water inlet penetrating into the cavity; a capacitive electronic water level gauge is provided in the cavity; ring-shaped slots are opened on both ends of the ring for connecting rainwater pipes;

[0007] Compared to monitoring water levels using ultrasonic generators, this urban flooding monitoring and early warning device directly avoids the impact of rainwater debris on the capacitive electronic water level gauge. Furthermore, the capacitive electronic water level gauge is installed on the side of the rainwater pipe, preventing impact damage from solid objects in the rainwater, thus ensuring stable operation of the device in harsh environments.

[0008] Preferably, a first filter plate is provided at the water inlet, and a second filter plate is provided on the outer side of the first filter plate. The second filter plate has protrusions at its upper and lower corners. Guide grooves are symmetrically formed on the upper and lower sides of the water inlet, and the protrusions are slidably connected within the guide grooves. A rotating ring is rotatably connected within the ring body, and multiple blades are provided on the inner surface of the rotating ring. Rainwater washes the blades, causing the rotating ring to rotate. Multiple notches are formed on the rotating ring, and a wedge-shaped elastic block is provided at the middle of the upper outer surface of the second filter plate. The elastic block intermittently contacts the notches. The rotating ring rotates continuously, causing the second filter plate to move upwards. The movement of the second filter plate pushes away foreign objects near the water inlet, allowing them to flow away with the rainwater. Simultaneously, the alternating up and down movement of the second filter plate scrapes out residual foreign objects in the guide grooves, ensuring cleanliness and facilitating smooth movement of the protrusions within the guide grooves.

[0009] Preferably, the lower end of the second filter plate is provided with a reset spring, the end of which is fixed to the bottom surface of the inlet. With the reset spring on the second filter plate, after the second filter plate is pushed upwards by the rotating ring, the notch disengages from the elastic block, and the reset spring promptly pulls the second filter plate downwards, accelerating its downward movement and generating a greater vibration amplitude. This helps to remove foreign objects near the inlet. Simultaneously, when the reset spring pulls the second filter plate back, the protrusion on the second filter plate impacts the bottom of the guide groove, vibrating the foreign objects within the guide groove and aiding in their removal.

[0010] Preferably, a groove is formed at the top of the inner ring of the ring, and a rod is rotatably connected within the groove. Multiple paddles are evenly distributed on the surface of the rod, with the ends of the paddles protruding from the inner ring surface and intermittently touching the notch. A generator motor is also provided within the groove, with its output end fixed to the end of the rod. The generator motor is electrically connected to a capacitive electronic water level gauge. As the ring rotates, the notch intermittently contacts the paddles on the rod, causing the rod to rotate. The rod drives the generator motor to rotate, generating electricity. A wireless transmission module, such as a Bluetooth transmission module, is also provided within the cylinder. The device is electrically connected to a capacitive electronic water level gauge. The generator produces electricity that connects the Bluetooth transmitter module to the capacitive electronic water level gauge. When staff are near the urban flood monitoring and early warning device, they can use a mobile terminal, such as a mobile phone or laptop, to connect via Bluetooth and transmit the data measured by the capacitive electronic water level gauge to the mobile terminal. At this time, staff do not need to go to the back-end location to check the water level data. Furthermore, during rainy weather, in order to reduce the risk of electric shock, the power system is usually disconnected, and there is no power supply to the back-end. At this time, the generator can temporarily supply power to ensure timely receipt of water level data.

[0011] Preferably, the capacitive electronic water level gauge includes a rectangular outer shell, inside which is a columnar float. An electrical contact plate is located at the upper end of the float, and a conductor is located at the upper end of the outer shell. The electrical contact plate and conductor are electrically connected to an external alarm device. When the electrical contact plate contacts the conductor, the alarm device is triggered, alerting personnel. Rainwater flows into the cavity through the inlet, rises, and pushes the float upwards. The float gradually rises, and if the water level exceeds the warning threshold, the electrical contact plate contacts the conductor, triggering the alarm device to alert personnel and allow for timely response to impending flooding.

[0012] Preferably, the housing contains multiple guide units arranged vertically, each guide unit including a wheel and a fixed shaft. The end of the fixed shaft is fixed to the inner wall of the housing, and the wheel is rotatably connected to the fixed shaft. The outer ring of the wheel is attached to the surface of the float. The surface of the float is fitted with the interior of the housing to ensure that the float can move up and down under the buoyancy of the water. However, due to the gap fit between the float and the interior of the housing, the float may move up and down in an inclined state. In this case, the effective height of the float is less than the actual height of the float. As a result, when the rainwater level reaches the warning threshold, the electrical contact plate has not yet made contact with the conductor, causing the staff to fail to receive the alarm information issued by the alarm device in time. Therefore, the guide unit is set up to constrain the state of the float. The surface of the float is attached to the surface of the wheel and moves. The wheel and the surface of the float are in point contact, which reduces the relative movement resistance between the float and the wheel and ensures the smooth movement of the float. At the same time, the float moves up and down in a vertical state to ensure that the water level rises, which is the float rises, accurately triggering the alarm device.

[0013] Preferably, each wheel body has multiple fan blades uniformly fixed to its end face; the outer side wall of the outer shell has multiple trays on its upper and lower sides, the trays are fixed above each guide unit, and drainage holes are opened on the outer shell at positions opposite to the trays. The drainage holes are used to guide rainwater to wash onto the fan blades. If small foreign objects in the rainwater flow into the space between the wheel body and the fixed shaft, after the foreign objects dry, they will hinder the relative rotation between the wheel body and the fixed shaft. At the same time, the resistance of the float moving the wheel body will also increase, and the float body will not be able to move upward smoothly. Therefore, fan blades are provided on the wheel body. Rainwater flows into the trays along the inlet, and then flows into the outer shell through the drainage holes. The rainwater falls onto the fan blades in a parabolic manner, driving the fan blades to rotate. The fan blades provide driving force for the rotation of the wheel body, so as to prevent foreign objects from accumulating in the gap between the wheel body and the fixed shaft, which would hinder the relative rotation between the wheel body and the fixed shaft, thereby ensuring the smooth upward movement of the float body.

[0014] Preferably, each of the protrusions has a rotating groove, and a guide wheel is rotatably connected inside the rotating groove. The guide wheel is rotatably connected inside the guide groove. The guide wheel rotates against the inner surface of the guide groove, converting the relative sliding between the protrusion and the guide groove into rolling between the guide wheel and the guide groove, reducing resistance and facilitating the up-and-down movement of the second filter plate.

[0015] Preferably, the surface of the electrical contact plate is provided with multiple conical pins, each pin being electrically fixed to the electrical contact plate; the lower end of the conductor has a notch, and multiple springs are provided in the notch, the springs being electrically fixed to the conductor; the float moves upward and pushes the pins toward the springs, at which point the pins are inserted into the gaps between the springs, and the surface of the pins scrapes against the surface of the springs, scraping off foreign objects attached to the surface of the pins, which helps to make electrical connections between the electrical contact plate and the conductor; the pins are inserted between the springs, and the pins electrically connect the springs, at which point the water level is the warning threshold, and the alarm device is triggered to start.

[0016] Preferably, each of the pins has multiple protrusions on its surface; the protrusions on the surface of the pins scrape against the surface of the spring, and when the protrusions detach from the spring, the spring vibrates, which shakes off the dirt attached to the surface of the spring, thus facilitating electrical contact between the pins and the spring.

[0017] The advantages of this invention are:

[0018] 1. Compared with monitoring water levels using an ultrasonic generator, the urban flooding monitoring and early warning device of the present invention can directly avoid the influence of rainwater debris on the capacitive electronic water level gauge. At the same time, the capacitive electronic water level gauge is installed on one side of the rainwater pipe to avoid impact damage to the capacitive electronic water level gauge by solid objects in the rainwater, ensuring the stable operation of the urban flooding monitoring and early warning device in harsh environments.

[0019] 2. This invention connects to an external alarm device via an electrical contact plate and a conductor. When the electrical contact plate contacts the conductor, the alarm device is triggered and activated, alerting staff and providing multiple warning methods to help staff promptly detect impending flooding problems.

[0020] 3. The present invention uses a rotating ring to continuously rotate and drive the second filter plate to move upward. The movement of the second filter plate allows foreign objects near the water inlet to be pushed away and flow away with the rainwater. At the same time, the alternating up and down movement of the second filter plate can also scrape out the foreign objects remaining in the guide groove, ensuring the cleanliness of the guide groove and helping the protrusion to move smoothly in the guide groove. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the urban flooding monitoring and early warning device in Example 1;

[0022] Figure 2 This is a three-dimensional view of the fit between the ring and the cylinder in Example 1;

[0023] Figure 3 This is a three-dimensional view of the connection between the ring body and the rainwater pipe in Example 1;

[0024] Figure 4 This is a three-dimensional view of the ring in Example 1;

[0025] Figure 5 This is a perspective view of filter plate number one and filter plate number two in Example 1;

[0026] Figure 6 This is a three-dimensional view of the interaction between the column and the capacitive electronic water gauge in Example 1;

[0027] Figure 7 This is a perspective view of the fit between the guide groove and the water inlet in Embodiment 1;

[0028] Figure 8 This is a perspective view of the rotating ring in Example 1;

[0029] Figure 9 This is a three-dimensional view of the capacitive electronic water level gauge in Example 1;

[0030] Figure 10 This is a cross-sectional view of the capacitive electronic water gauge in Embodiment 1;

[0031] Figure 11 This is a perspective view of the assembly of the wheel and the float in Example 1;

[0032] Figure 12 This is a perspective view of the interaction between the tray and the float in Embodiment 1;

[0033] Figure 13 This is a perspective view of the interaction between the spring and the conductor in Example 2;

[0034] Figure 14 This is a perspective view of the interaction between the pin and the electrical contact plate in Embodiment 2.

[0035] In the diagram: 1. Ring; 2. Column; 3. Cavity; 4. Inlet; 5. Capacitive electronic water level gauge; 6. Slot; 7. Rainwater pipe; 8. Filter plate No. 1; 9. Filter plate No. 2; 10. Protrusion; 11. Guide groove; 12. Rotating ring; 13. Blade; 14. Notch; 15. Elastic block; 16. Reset spring; 17. Rod; 18. Paddle; 19. Outer shell; 20. Float; 21. Electrical contact plate; 22. Conductor; 23. Wheel; 24. Fixed shaft; 25. Fan blade; 26. Tray; 27. Drain hole; 28. Guide wheel; 29. ​​Pin; 30. Spring. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example 1:

[0038] Reference Figure 1 , Figure 3 , Figure 4 , 6 and Figure 9 An urban flooding monitoring and early warning device includes a ring body 1 and a column body 2; a cavity 3 is opened inside the column body 2, the ring body 1 is fixed to one side of the column body 2, and a water inlet 4 is opened at the position where the column body 2 is fixed to the ring body 1, the water inlet 4 extends into the cavity 3; a capacitive electronic water level gauge 5 is provided in the cavity 3; ring-shaped grooves 6 are opened on both ends of the ring body 1, the grooves 6 are used to connect rainwater pipes 7.

[0039] When laying urban drainage pipes, the urban flooding monitoring and early warning device is installed between two adjacent rainwater pipes 7. In specific operation, when excavating the foundation pit of the rainwater pipe 7, a pit is dug at the location where the urban flooding monitoring and early warning device is to be buried. The urban flooding monitoring and early warning device is placed in the pit. Then, the ends of the rainwater pipes 7 are respectively inserted into the slots 6 on the ring body 1. After that, the wires connecting the capacitive electronic water gauge 5 are led out of the foundation pit, and then backfilled and compacted. When rainwater flows through the rainwater pipe 7, it flows into the cavity 3 along the inlet 4. The water level in the cavity 3 is level with the water level in the rainwater pipe 7. At this time, the water level measured by the capacitive water gauge is the rainwater flow level in the pipe. If the water level in the rainwater pipe 7 rises, and the measured water level is higher than the warning threshold, the wire connected to the capacitive water gauge transmits the data to the background monitoring platform. When the staff learns that the water level in the rainwater pipe 7 is higher than the warning threshold, they activate the warning alarm device, thus promptly detecting urban flooding problems. Compared with monitoring water levels through ultrasonic generators, this urban flooding monitoring and early warning device can directly avoid the influence of dirt in the rainwater on the capacitive electronic water gauge 5. At the same time, the capacitive electronic water gauge 5 is installed on one side of the rainwater pipe 7 to avoid impact damage from solid objects in the rainwater, ensuring the stable operation of the urban flooding monitoring and early warning device in harsh environments.

[0040] Reference Figure 2 , Figure 5 , Figure 7 and Figure 8A first filter plate 8 is provided at the water inlet 4, and a second filter plate 9 is provided on the outer side of the first filter plate 8. The second filter plate 9 has protrusions 10 at its upper and lower corners. Guide grooves 11 are symmetrically formed on the upper and lower sides of the water inlet 4, and the protrusions 10 are slidably connected within the guide grooves 11. A rotating ring 12 is rotatably connected inside the ring body 1. Multiple blades 13 are provided on the inner surface of the rotating ring 12. Rainwater washes the blades 13, causing the rotating ring 12 to rotate. Multiple notches 14 are formed on the rotating ring 12. The second filter plate 9... A wedge-shaped elastic block 15 is provided in the middle of the upper outer surface. The elastic block 15 intermittently touches the notch 14. Rainwater flows from the road surface into the rainwater pipe 7. If there are many floating foreign objects in the rainwater, some of the foreign objects may flow into the cavity 3 along the water inlet when passing through the urban flood monitoring and early warning device. The foreign objects adhere to the surface of the capacitive electronic water level gauge 5, which may cause inaccurate data when detecting water level. For this reason, a filter plate 8 is set to block foreign objects outside the cavity 3. However, some foreign objects are flocculent. Foreign objects can easily get caught in the mesh of the first filter plate 8, or some sheet-like objects may directly cover the first filter plate 8, affecting the flow rate of rainwater into the cavity 3. This causes the capacitive electronic water level gauge 5 to fail to detect the water level in time. Therefore, a second filter plate 9 is installed. When rainwater flows through, it washes the blades 13 on the rotating ring 12. The blades 13 drive the rotating ring 12 to rotate. When the rotating ring 12 rotates, the notch 14 intermittently contacts the elastic locking block 15, causing the second filter plate 9 to move upward. The notch 14 then disengages from the elastic locking block 15. At 5 o'clock, the second filter plate 9 moves to its initial position under its own weight and waits for the next notch 14 to touch the elastic block 15 and push it upward; the rotating ring 12 rotates continuously and drives the second filter plate 9 to move upward. The movement of the second filter plate 9 allows foreign objects close to the water inlet 4 to be pushed away and moved away with the rainwater flow. At the same time, the alternating up and down movement of the second filter plate 9 can also scrape out the foreign objects remaining in the guide groove 11, ensuring the cleanliness of the guide groove 11 and helping the protrusion 10 to move smoothly in the guide groove 11.

[0041] Reference Figure 5 The lower end of the second filter plate 9 is provided with a reset spring 16, and the end of the reset spring 16 is fixed to the bottom surface of the inlet 4. When the second filter plate 9 is pushed up by the rotating ring 12, the notch 14 disengages from the elastic block 15, and the reset spring 16 pulls the second filter plate 9 down in time, accelerating the downward movement speed of the second filter plate 9 and generating a larger vibration amplitude, which helps to remove foreign objects near the inlet 4. At the same time, when the reset spring 16 pulls the second filter plate 9 back, the protrusion 10 on the second filter plate 9 hits the bottom of the guide groove 11, which vibrates the foreign objects in the guide groove 11 and helps to remove the foreign objects.

[0042] Reference Figure 2 and Figure 4The inner top of the ring 1 has a groove, and a rod 17 is rotatably connected within the groove. Multiple paddles 18 are evenly distributed on the surface of the rod 17, with the ends of the paddles 18 protruding from the inner surface of the ring 1. The paddles 18 intermittently touch the notch 14. A generator motor is also located within the groove, with its output fixed to the end of the rod 17. The generator motor is electrically connected to a capacitive electronic water level gauge 5. As the ring 12 rotates, the notch 14 intermittently touches the paddles 18 on the rod 17, causing the rod 17 to rotate. The rod 17 drives the generator motor to rotate, generating electricity. A wireless transmission module is also installed inside the column 2, for example... The Bluetooth transmitter module is electrically connected to the capacitive electronic water level gauge 5. The generator produces electricity and electrically connects the Bluetooth transmitter module and the capacitive electronic water level gauge 5. When staff approach the urban flood monitoring and early warning device, they can use a mobile terminal, such as a mobile phone or laptop, to connect via Bluetooth and transmit the data measured by the capacitive electronic water level gauge 5 to the mobile terminal. At this time, staff do not need to go to the back-end location to check the water level data. Furthermore, in rainy weather, in order to reduce the risk of electric shock, the power system is usually disconnected, and there is no power supply to the back-end. At this time, the generator can temporarily supply power to ensure timely receipt of water level data.

[0043] Reference Figure 9 , Figure 10 , Figure 11 and Figure 12 The capacitive electronic water level gauge 5 includes a rectangular outer shell 19, inside which is a columnar float 20. An electrical contact plate 21 is provided at the upper end of the float 20, and a conductor 22 is provided at the upper end of the outer shell 19. The electrical contact plate 21 and the conductor 22 are electrically connected to an external alarm device. When the electrical contact plate 21 contacts the conductor 22, the alarm device is triggered and activated to warn the staff. Rainwater flows into the cavity 3 through the inlet 4. The rainwater rises and pushes the float 20 upward. The float 20 gradually rises. If the water level is higher than the warning threshold, the electrical contact plate 21 contacts the conductor 22. At this time, the alarm device is triggered and activated to warn the staff and respond to the impending flood disaster in a timely manner.

[0044] Reference Figure 11 and Figure 12The outer casing 19 has multiple guide units arranged vertically, each guide unit including a wheel 23 and a fixed shaft 24. The end of the fixed shaft 24 is fixed to the inner wall of the outer casing 19, and the wheel 23 is rotatably connected to the fixed shaft 24. The outer ring of the wheel 23 is attached to the surface of the float 20. The surface of the float 20 is clearance-fitted to the inside of the outer casing 19 to ensure that the float 20 can move up and down under the buoyancy of water. However, due to the clearance fit between the float 20 and the inside of the outer casing 19, the float 20 may move up and down in an inclined state. In this case, the height to which the inclined float 20 rises and the electrical contact plate 21 makes electrical contact with the conductor 22 is greater than the height to which the float 20 rises in the vertical state. The height at which the contact plate 21 rises when it makes electrical contact with the conductor 22 means that when the rainwater level reaches the actual warning threshold, the contact plate 21 has not yet made contact with the conductor 22, causing the staff to fail to receive the alarm information issued by the alarm device in time. To address this, a guide unit is set up to constrain the state of the float 20. The surface of the float 20 is attached to the surface of the wheel 23 and moves. The wheel 23 and the surface of the float 20 are in point contact, which reduces the relative movement resistance between the float 20 and the wheel 23 and ensures the smooth movement of the float 20. At the same time, the float 20 moves up and down in a vertical position to ensure that the water level rises by the specified height, which is the rise height of the float 20, accurately triggering the alarm device.

[0045] Reference Figure 11 and Figure 12 Each wheel body 23 has multiple fan blades 25 evenly fixed to its end face; the outer side wall of the outer shell 19 is provided with multiple trays 26, which are fixed above each guide unit. Drainage holes 27 are opened on the outer shell 19 at positions opposite to the trays 26, and the drainage holes 27 are used to guide rainwater to wash on the fan blades 25. If small foreign objects from rainwater enter between the wheel body 23 and the fixed shaft 24, after the foreign objects dry, they will hinder the relative rotation between the wheel body 23 and the fixed shaft 24. At the same time, the resistance of the float 20 rubbing against the wheel body 23 will also increase, and the float 20 will not be able to move upward smoothly. Therefore, a fan blade 25 is installed on the wheel body 23. Rainwater flows into the tray 26 through the inlet 4, and then flows into the outer casing 19 through the drain hole 27. The rainwater falls on the fan blade 25 in a parabolic manner, driving the fan blade 25 to rotate. The fan blade 25 provides the driving force for the rotation of the wheel body 23, so as to prevent foreign objects from accumulating between the wheel body 23 and the fixed shaft 24 and hindering the relative rotation between the wheel body 23 and the fixed shaft 24, thereby ensuring the smooth upward movement of the float 20.

[0046] Reference Figure 5 and Figure 7Each of the protrusions 10 has a rotating groove, and a guide wheel 28 is rotatably connected in the rotating groove. The guide wheel 28 is rotatably connected in the guide groove 11. The guide wheel 28 rotates against the inner surface of the guide groove 11, converting the relative sliding between the protrusion 10 and the guide groove 11 into rolling between the guide wheel 28 and the guide groove 11, reducing resistance and facilitating the up-and-down movement of the second filter plate 9.

[0047] Example 2:

[0048] Reference Figure 13 and Figure 14 Compared to Embodiment 1, as another embodiment of the present invention, the surface of the electrical contact plate 21 is provided with a plurality of conical pins 29, each pin 29 being electrically fixed to the electrical contact plate 21; the lower end of the conductor 22 has a notch, and a plurality of springs 30 are provided in the notch, the springs 30 being electrically fixed to the conductor 22; the float 20 moves upward and pushes the pins 29 toward the springs 30, at which time the pins 29 are inserted into the gaps between the springs, and the surface of the pins 29 scrapes against the surface of the springs 30, removing the foreign matter attached to the surface of the pins 29. Scratching off the dirt helps to make electrical contact between the electrical contact plate 21 and the conductor 22; the pin 29 is inserted between the springs 30, and the pin 29 electrically connects the spring 30. At this time, the water level is the warning threshold, and the alarm device is triggered to start; each of the pins 29 has multiple protrusions on its surface; the protrusions on the surface of the pin 29 scrape against the surface of the spring 30. When the protrusions are separated from the spring 30, the spring 30 vibrates, which shakes off the dirt attached to the surface of the spring 30, which helps to make electrical contact between the pin 29 and the spring 30.

[0049] The working principle of this invention is as follows: When laying urban drainage pipes, the urban flooding monitoring and early warning device is installed between two adjacent rainwater pipes 7. In specific operation, when excavating the foundation pit of the rainwater pipe 7, a pit is dug at the location where the urban flooding monitoring and early warning device is to be buried. The urban flooding monitoring and early warning device is placed in the pit. Then, the ends of the rainwater pipes 7 are respectively inserted into the slots 6 on the ring body 1. After that, the wires connecting the capacitive electronic water gauge 5 are led out of the foundation pit, and then backfilled and compacted. As rainwater flows through the rainwater pipe 7, it enters the cavity 3 through the inlet 4. The water level in the cavity 3 is level with the water level in the rainwater pipe 7. At this point, the capacitive water gauge measures the water level, which is the flowing water level in the pipe. If the water level in the rainwater pipe 7 rises, and the capacitive water gauge measures a water level higher than the warning threshold, the wire connecting the capacitive water gauge transmits the data to the back-end monitoring platform. When staff learn that the water level in the rainwater pipe 7 is higher than the warning threshold, they activate the warning alarm device, thus promptly detecting urban flooding problems. Compared to monitoring water levels using ultrasonic generators, this urban flooding monitoring and early warning device directly avoids the impact of rainwater debris on the capacitive electronic water gauge 5. Furthermore, the capacitive electronic water gauge 5 is installed on one side of the rainwater pipe 7, preventing impact damage from solid objects in the rainwater, ensuring stable operation of the urban flooding monitoring and early warning device in harsh environments.

[0050] Rainwater flows from the road surface into the storm drain 7. If there are many floating foreign objects in the rainwater, some of these objects may flow into the cavity 3 through the inlet hole when passing through the urban flood monitoring and early warning device. These foreign objects may adhere to the surface of the capacitive electronic water level gauge 5, potentially causing inaccurate data when detecting water levels. To address this, a first filter plate 8 is installed to block foreign objects from entering the cavity 3. However, some foreign objects are flocculent and easily get caught in the mesh of the first filter plate 8, or some are sheet-like and may directly cover the first filter plate 8, affecting the flow rate of rainwater into the cavity 3. This can prevent the capacitive electronic water level gauge 5 from detecting water levels in a timely manner. Therefore, a second filter plate 9 is installed. As rainwater flows through, it washes over the blades 13 on the rotating ring 12. The blades 13 drive the rotating ring 12 to rotate. As the rotating ring 12 rotates, the notch 14 intermittently contacts the elastic locking block 15, causing the second filter plate 9 to move upward. When the notch 14 disengages from the elastic locking block 15, the second filter plate 9 moves to its initial position under its own weight and waits for the next notch 14 to contact the elastic locking block 15 and push it upward. The rotating ring 12 rotates continuously and drives the second filter plate 9 to move upward. The movement of the second filter plate 9 allows foreign objects near the inlet 4 to be pushed away and flow away with the rainwater. At the same time, the alternating up and down movement of the second filter plate 9 can also scrape out the foreign objects remaining in the guide groove 11, ensuring the cleanliness of the guide groove 11 and helping the protrusion 10 to move smoothly in the guide groove 11.

[0051] A reset spring 16 is installed on the second filter plate 9. After the second filter plate 9 is pushed up by the rotating ring 12, the notch 14 disengages from the elastic block 15, and the reset spring 16 pulls the second filter plate 9 down in time, accelerating the downward movement speed of the second filter plate 9 and generating a larger vibration amplitude, which helps to remove foreign objects near the water inlet 4. At the same time, when the reset spring 16 pulls the second filter plate 9 back, the protrusion 10 on the second filter plate 9 hits the bottom of the guide groove 11, which vibrates the foreign objects in the guide groove 11 and helps to remove the foreign objects.

[0052] While the rotating ring 12 is rotating, the notch 14 intermittently contacts the lever 18 on the rod 17, causing the rod 17 to rotate. The rod 17 drives the generator to rotate, and the generator produces electricity. The column 2 is also equipped with a wireless transmission module, such as a Bluetooth transmission module. The Bluetooth transmission module is electrically connected to the capacitive electronic water level gauge 5. The generator produces electricity and is electrically connected to the Bluetooth transmission module and the capacitive electronic water level gauge 5. When staff approach the urban flood monitoring and early warning device, they can connect via Bluetooth using a mobile terminal, such as a mobile phone or laptop, to transmit the data measured by the capacitive electronic water level gauge 5 to the mobile terminal. At this time, staff do not need to go to the back-end location to check the water level data. Furthermore, in rainy weather, in order to reduce the risk of electric shock, the power system is usually disconnected, and there is no power supply to the back-end. At this time, the generator can temporarily supply power to ensure the timely receipt of water level data.

[0053] The electrical contact plate 21 and the conductor 22 are electrically connected to an external alarm device. When the electrical contact plate 21 contacts the conductor 22, the alarm device is triggered and activated to alert the staff. Rainwater flows into the cavity 3 along the inlet 4. The rainwater rises and pushes the float 20 upward. The float 20 gradually rises. If the water level is higher than the warning threshold, the electrical contact plate 21 and the conductor 22 make electrical contact. At this time, the alarm device is triggered and activated to alert the staff and respond to the impending flood disaster in a timely manner.

[0054] The surface clearance of the float 20 fits the interior of the outer shell 19, ensuring that the float 20 can move up and down under buoyancy. However, due to the clearance between the float 20 and the interior of the outer shell 19, the float 20 may move up and down in a tilted state. In this case, the height to which the electric contact plate 21 rises when it makes electrical contact with the conductor 22 is greater than the height to which the electric contact plate 21 rises when the float 20 rises in a vertical state. This results in the electric contact plate 21 not yet being activated when the rainwater level reaches the actual warning threshold. Furthermore, since it had not yet come into contact with the conductor 22, the staff could not receive the alarm information issued by the alarm device in a timely manner. To address this, a guiding unit was set up to constrain the state of the float 20. The surface of the float 20 was attached to the surface of the wheel 23 and moved. The surface of the wheel 23 and the surface of the float 20 were in point contact, which reduced the relative movement resistance between the float 20 and the wheel 23 and ensured the smooth movement of the float 20. At the same time, the float 20 was placed in a vertical position and moved up and down to ensure that the water level rose by a certain height, which was the rise height of the float 20, and accurately triggered the alarm device.

[0055] If small foreign objects from rainwater flow into the space between the wheel body 23 and the fixed shaft 24, after they dry, they will obstruct the relative rotation between the wheel body 23 and the fixed shaft 24. Simultaneously, the resistance of the float 20 rubbing against the wheel body 23 will increase, preventing the float 20 from moving upwards smoothly. Therefore, fan blades 25 are installed on the wheel body 23. Rainwater flows into the tray 26 through the inlet 4, and then flows into the outer casing 19 through the drain hole 27. The rainwater falls parabolically onto the fan blades 25. The fan blades 25 rotate, providing the driving force for the rotation of the wheel body 23. This prevents foreign objects from accumulating between the wheel body 23 and the fixed shaft 24, thus hindering the relative rotation between the wheel body 23 and the fixed shaft 24 and ensuring the smooth upward movement of the float 20. The guide wheel 28 rotates against the inner surface of the guide groove 11, converting the relative sliding between the protrusion 10 and the guide groove 11 into rolling between the guide wheel 28 and the guide groove 11, reducing resistance and facilitating the up-and-down movement of the second filter plate 9.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An urban flooding monitoring and early warning device, characterized in that: It includes a ring (1) and a column (2); a cavity (3) is opened inside the column (2), the ring (1) is fixed to one side of the column (2), and a water inlet (4) is opened at the position where the column (2) is fixed to the ring (1), the water inlet (4) extends into the cavity (3); a capacitive electronic water gauge (5) is provided in the cavity (3); ring-shaped slots (6) are opened on both ends of the ring (1), and the slots (6) are used to connect rainwater pipes (7); A first filter plate (8) is provided at the water inlet (4), and a second filter plate (9) is provided on the outside of the first filter plate (8). The upper and lower corners of the second filter plate (9) are provided with protrusions (10). Guide grooves (11) are symmetrically opened on the upper and lower sides of the water inlet (4), and the protrusions (10) are slidably connected in the guide grooves (11). A rotating ring (12) is rotatably connected inside the ring body (1). Multiple blades (13) are provided on the inner surface of the rotating ring (12). Rainwater washes the blades (13) and drives the rotating ring (12) to rotate. Multiple notches (14) are opened on the rotating ring (12). A wedge-shaped elastic block (15) is provided in the middle of the upper outer surface of the second filter plate (9). The elastic block (15) intermittently touches the notches (14). The capacitive electronic water gauge (5) includes a rectangular shell (19), a columnar float (20) inside the shell (19), an electrical contact plate (21) at the upper end of the float (20), and a conductor (22) at the upper end of the shell (19). Multiple guide units are provided inside the outer shell (19), each guide unit including a wheel (23) and a fixed shaft (24); the end of the fixed shaft (24) is fixed to the inner wall of the outer shell (19), the wheel (23) is rotatably connected to the fixed shaft (24), and the outer ring of the wheel (23) is attached to the surface of the float (20); Each wheel body (23) has multiple fan blades (25) evenly fixed to its end face; the outer side wall of the outer shell (19) is provided with multiple trays (26) on the upper and lower sides, the trays (26) are fixed above each guide unit, and drainage holes (27) are opened on the outer shell (19) at the position opposite to the trays (26), the drainage holes (27) are used to guide rainwater to wash on the fan blades (25); The lower end of the second filter plate (9) is provided with a reset spring (16), and the end of the reset spring (16) is fixed to the bottom surface of the inlet (4).

2. The urban flooding monitoring and early warning device according to claim 1, characterized in that: The inner top of the ring (1) has a groove, and a rod (17) is rotatably connected in the groove. Multiple paddles (18) are evenly provided on the surface of the rod (17). The ends of the paddles (18) protrude from the inner surface of the ring (1), and the paddles (18) intermittently touch the notch (14). A generator motor is also provided in the groove. The output end of the generator motor is fixed to the end of the rod (17), and the generator motor is electrically connected to the capacitor-type electronic water gauge (5).

3. The urban flooding monitoring and early warning device according to claim 1, characterized in that: Each of the protrusions (10) has a rotating groove, and a guide wheel (28) is rotatably connected in the rotating groove. The guide wheel (28) is rotatably connected in the guide groove (11).

4. The urban flooding monitoring and early warning device according to claim 1, characterized in that: The surface of the electrical contact plate (21) is provided with a plurality of conical pins (29), each pin (29) being electrically fixed to the electrical contact plate (21); the lower end of the conductor (22) is provided with a notch, and a plurality of springs (30) are provided in the notch, the springs (30) being electrically fixed to the conductor (22).

5. The urban flooding monitoring and early warning device according to claim 4, characterized in that: Each of the pins (29) has a plurality of protrusions on its surface.

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