Liquid level monitoring device for urban sewer network
By designing an auxiliary monitoring cylinder and a stabilizing mechanism on the radar level gauge, the problem of inaccurate level monitoring in complex aquatic environments was solved, achieving accuracy and stability in level monitoring and ensuring the normal operation of the radar level gauge in the presence of pollutants and solids.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU PUBLIC UTILITIES DEVELOPMENT GROUP LONGGANG WATER CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-05
AI Technical Summary
Existing radar level gauges are inaccurate in complex aquatic environments with a lot of pollutants or sediment, especially when the liquid in the manhole contains foam or solids, making it difficult to accurately monitor the liquid level.
A liquid level monitoring device was designed, comprising a mounting platform, a radar level gauge, a wireless transmission control system, and an auxiliary monitoring cylinder. The auxiliary monitoring cylinder consists of a fixed straight cylinder and a movable telescopic straight cylinder, equipped with a filter screen and a balancing vent. The auxiliary monitoring cylinder blocks contaminants and solids, ensuring the accuracy of radar level gauge monitoring. It is also reinforced by a stabilizing mechanism and an expansion cylinder structure to prevent tilting.
It effectively prevents pollutants and solids from interfering with the radar level gauge, ensuring the accuracy and stability of level monitoring, reducing the possibility of foreign object blockage, and guaranteeing the reliability of monitoring information.
Smart Images
Figure CN224326969U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of liquid level monitoring equipment for drainage pipe networks, and in particular to a liquid level monitoring device for urban drainage pipe networks. Background Technology
[0002] Monitoring the drainage status of municipal stormwater and sewage manholes is a crucial daily task in urban underground drainage networks and a vital source of basic data for urban flood control and construction planning. Due to the vastness and complexity of drainage networks, and the difficulty in direct observation, automated sensing methods are needed for real-time, non-manual monitoring of manhole drainage status. Among the most important data is the monitoring of liquid levels within the manholes. Radar level gauges or pressure level gauges are typically used for real-time monitoring. While radar level gauges are effective in areas with relatively good water conditions, they often become inaccurate in complex aquatic environments with significant amounts of pollutants or sediment, especially when the liquid in the manhole contains foam or solids. Therefore, improvements are urgently needed. Utility Model Content
[0003] To address the shortcomings of the aforementioned technologies, this utility model provides a liquid level monitoring device for urban drainage pipe networks, comprising an installation platform, an installation rod for connection to the manhole wall, a radar level gauge, and a wireless transmission control system. Both the radar level gauge and the wireless transmission control system are mounted on the installation platform, with the radar level gauge connected to the wireless transmission control system. The installation rod is connected to the installation platform. The installation platform has an installation slot matching the radar level gauge, which is detachably mounted within the installation slot. An auxiliary monitoring cylinder for preventing interference from pollutants and solid objects is located at the lower opening of the installation slot on the installation platform. The auxiliary monitoring cylinder includes a fixed straight cylinder of matching size and several movable telescopic straight cylinders. The fixed straight cylinder is fixedly connected to the installation slot, and the several movable telescopic straight cylinders are sequentially sleeved and slidably fitted to the fixed straight cylinder. A filter screen for preventing blockage by foreign objects is provided at the end of each movable straight cylinder. A pair of balancing air holes are provided on the fixed straight cylinder, and a stabilizing mechanism is also provided on each of the movable straight cylinders.
[0004] Using the above technical solution, an installation channel is set on the mounting platform, and the radar level gauge is placed in the installation channel. A retractable auxiliary monitoring cylinder is set on the installation channel and submerged below the water level in the manhole. The radar level gauge monitors the water level in the manhole by monitoring the water level in the auxiliary monitoring cylinder. In this way, the auxiliary monitoring cylinder can block pollutants, foam, solids, etc. that may float on the water surface in the manhole, so that the water level detected by the radar level gauge remains accurate. A balancing vent is set on the fixed value, so that the water level in the auxiliary monitoring cylinder can rise and fall freely, further ensuring the accuracy of the monitored water level information.
[0005] A further feature of this invention is that the stabilizing mechanism includes mutually matched L-shaped connecting sleeves, fixed sleeves, and several movable sleeves. The fixed sleeves are fixedly connected to the bottom of the mounting platform. One end of the L-shaped connecting sleeve is fixedly connected to a movable telescopic cylinder. The several movable sleeves are sequentially movably connected to each other, and both ends are movably connected to the L-shaped connecting sleeve and the fixed sleeve, respectively.
[0006] By adopting the above technical solution, the stabilizing mechanism includes mutually matching L-shaped connecting sleeves, fixed sleeves, and several movable sleeves. The fixed sleeves are fixedly connected to the bottom of the mounting platform, one end of the L-shaped connecting sleeve is fixedly connected to the movable telescopic straight cylinder, and the several movable sleeves are sequentially movably connected to each other, with both ends respectively movably connected to the L-shaped connecting sleeve and the fixed sleeve. The connection of the L-shaped connecting sleeve, the fixed sleeve, and the several movable sleeves strengthens the auxiliary monitoring cylinder, preventing it from tilting due to the flow of water in the manhole, which would prevent the radar level gauge from vertically illuminating the water surface.
[0007] A further feature of this invention is that an expansion cylinder is fixedly provided at the end of the movable straight cylinder, and the filter screen is disposed at the bottom of the expansion cylinder.
[0008] By adopting the above technical solution, since an expansion cylinder is fixedly provided at the end of the movable straight cylinder and the filter screen is set at the bottom of the expansion cylinder, the contact area between the bottom of the auxiliary monitoring cylinder and the water surface is further expanded, effectively reducing the possibility of foreign objects clogging the opening.
[0009] A further feature of this invention is that an adjusting connecting stake is fixedly provided on the mounting platform, and the mounting rod is connected to the adjusting connecting stake and movably engages with it.
[0010] By adopting the above technical solution, since an adjusting connecting pile is fixedly provided on the mounting platform, the mounting rod is connected to the adjusting connecting pile and can be movably coordinated to adjust the mounting platform according to the position of the water in the manhole, so as to ensure that the auxiliary monitoring cylinder can be extended into the water and that the radar level gauge can monitor normally. Attached Figure Description
[0011] Appendix Figure 1 This is a schematic diagram of the structure of a liquid level monitoring device for urban drainage pipe networks, which is a specific embodiment of this utility model.
[0012] Appendix Figure 2 This is a partial exploded structural diagram of a liquid level monitoring device for urban drainage pipe networks, which is a specific embodiment of this utility model.
[0013] Appendix Figure 3 This is a schematic diagram of the structure of a liquid level monitoring device for urban drainage pipe networks, which is a specific embodiment of this utility model.
[0014] 1- Mounting platform, 2- Mounting rod, 3- Radar level gauge, 4- Wireless transmission control system, 5- Mounting channel, 6- Auxiliary monitoring cylinder, 7- Fixed straight cylinder, 8- Movable telescopic straight cylinder, 9- Filter screen, 10- Balancing air hole, 11- Stabilizing mechanism, 12- L-shaped connecting sleeve rod, 13- Fixed sleeve rod, 14- Movable sleeve rod, 15- Expansion cylinder, 16- Adjusting connecting pile. Detailed Implementation
[0015] like Figure 1-3 The illustrated liquid level monitoring device for urban drainage pipe networks includes a mounting platform 1, a mounting rod 2 for connection to the manhole wall, a radar level gauge 3, and a wireless transmission control system 4. Both the radar level gauge and the wireless transmission control system are mounted on the mounting platform. The radar level gauge is connected to the wireless transmission control system. The mounting rod is connected to the mounting platform. A mounting groove 5 matching the radar level gauge is provided on the mounting platform. The radar level gauge is detachably mounted within the mounting groove. An auxiliary monitoring cylinder 6 for preventing interference from pollutants and solid objects is provided at the lower opening of the mounting groove on the mounting platform. The auxiliary monitoring cylinder includes a fixed straight cylinder 7 of matching size and several movable telescopic straight cylinders 8. The fixed straight cylinder is fixedly connected to the mounting groove. The several movable telescopic straight cylinders are sequentially sleeved and slidably fitted with the fixed straight cylinder. A filter screen 9 for preventing blockage by foreign objects is provided at the end of each movable straight cylinder. A pair of balancing air holes 10 are provided on the fixed straight cylinder. A stabilizing mechanism 11 is also provided on each of the movable straight cylinders.
[0016] An installation channel is set on the mounting platform, and the radar level gauge is placed inside the installation channel. A retractable auxiliary monitoring cylinder is installed on the installation channel and submerged below the water level in the manhole. The radar level gauge monitors the water level in the manhole by monitoring the water level inside the auxiliary monitoring cylinder. In this way, the auxiliary monitoring cylinder can block pollutants, foam, solids, etc. that may float on the water surface in the manhole, so that the water level detected by the radar level gauge remains accurate. A balancing vent is set on the fixed value, so that the water level inside the auxiliary monitoring cylinder can rise and fall freely, further ensuring the accuracy of the monitored water level information.
[0017] The stabilizing mechanism includes mutually matched L-shaped connecting sleeves 12, fixed sleeves 13, and several movable sleeves 14. The fixed sleeves are fixedly connected to the bottom of the mounting platform. One end of the L-shaped connecting sleeve is fixedly connected to the movable telescopic straight cylinder. The several movable sleeves are sequentially movably connected to each other, and their two ends are respectively movably connected to the L-shaped connecting sleeve and the fixed sleeve.
[0018] The stabilizing mechanism includes mutually matching L-shaped connecting rods, fixed rods, and several movable rods. The fixed rods are fixedly connected to the bottom of the mounting platform. One end of the L-shaped connecting rod is fixedly connected to the movable telescopic straight cylinder. The several movable rods are sequentially movably connected to each other, and their two ends are respectively movably connected to the L-shaped connecting rod and the fixed rod. The connection of the L-shaped connecting rod, the fixed rod, and the several movable rods strengthens the auxiliary monitoring cylinder, preventing it from tilting due to the flow of water in the manhole, which would prevent the radar level gauge from vertically illuminating the water surface.
[0019] An expansion cylinder 15 is fixedly provided at the end of the movable straight cylinder, and the filter screen is provided at the bottom of the expansion cylinder.
[0020] Since an expansion cylinder is fixedly provided at the end of the movable straight cylinder, and the filter screen is set at the bottom of the expansion cylinder, the contact area between the bottom of the auxiliary monitoring cylinder and the water surface is further expanded, effectively reducing the possibility of foreign objects clogging the opening.
[0021] An adjusting connecting stake 16 is fixedly provided on the mounting platform, and the mounting rod is connected to the adjusting connecting stake and makes movable cooperation.
[0022] Since an adjusting connecting pile is fixedly installed on the mounting platform, the mounting rod is connected to the adjusting connecting pile and can be moved to adjust the mounting platform according to the position of the water in the manhole, so as to ensure that the auxiliary monitoring cylinder can be inserted into the water and that the radar level gauge can monitor normally.
Claims
1. A liquid level monitoring device for urban drainage pipe networks, comprising an installation platform, an installation rod for connection to a manhole wall, a radar level gauge, and a wireless transmission control system, wherein the radar level gauge and the wireless transmission control system are both mounted on the installation platform, the radar level gauge is connected to the wireless transmission control system, and the installation rod is connected to the installation platform, characterized in that: The mounting platform has a mounting slot that matches the radar level gauge. The radar level gauge is detachably installed in the mounting slot. An auxiliary monitoring cylinder for preventing interference from pollutants and solids is provided at the lower opening of the mounting slot on the mounting platform. The auxiliary monitoring cylinder includes a fixed straight cylinder of matching size and several movable telescopic straight cylinders. The fixed straight cylinder is fixedly connected to the mounting slot. The several movable telescopic straight cylinders are sequentially sleeved and slidably fitted with the fixed straight cylinder. The end of the movable telescopic straight cylinder is provided with a filter screen for preventing foreign objects from clogging it. The fixed straight cylinder has a pair of balancing air holes. The several movable telescopic straight cylinders are also provided with a stabilizing mechanism.
2. The liquid level monitoring device for urban drainage pipe networks according to claim 1, characterized in that: The stabilizing mechanism includes mutually matching L-shaped connecting sleeves, fixed sleeves, and several movable sleeves. The fixed sleeves are fixedly connected to the bottom of the mounting platform. One end of the L-shaped connecting sleeve is fixedly connected to the movable telescopic straight cylinder. The several movable sleeves are sequentially movably connected to each other, and their two ends are respectively movably connected to the L-shaped connecting sleeve and the fixed sleeve.
3. The liquid level monitoring device for urban drainage pipe networks according to claim 1, characterized in that: An expansion cylinder is fixedly provided at the end of the movable telescopic cylinder, and the filter screen is located at the bottom of the expansion cylinder.
4. The liquid level monitoring device for urban drainage pipe networks according to claim 1, characterized in that: An adjusting connecting stake is fixedly installed on the mounting platform, and the mounting rod is connected to the adjusting connecting stake and movably engages with it.