Inspection well liquid level monitoring equipment

Abstract

The utility model discloses inspection well liquid level monitoring equipment which comprises a stainless steel box, RUT equipment and a lithium battery are arranged in the stainless steel box, the RUT equipment is connected with the lithium battery through a detachable electric wire so that the lithium battery can supply power to the RUT equipment, the RUT equipment is located on the side face of the lithium battery, the stainless steel box is connected into a well chamber through a fixing piece screw, and the fixing piece improves stability of a triangular frame. A detachable door is arranged at the opening end of the upper portion of the stainless steel box, replacement is facilitated when the lithium battery is damaged, a charging port is formed in the detachable door and used for charging the lithium battery, and the charging port is provided with a silica gel plug to prevent rainwater from entering when the lithium battery is not charged; the PVC pipe is connected in the well chamber through a supporting piece screw, the supporting piece is a supporting rod, a throw-in type pressure transmitter penetrates through the PVC pipe, and the RUT equipment is in signal connection with the throw-in type pressure transmitter. The device is high in precision, cost-saving, good in waterproofness, simple and convenient to maintain, large in signal coverage area, and convenient to replace the lithium battery and charge.

Description

Technical Field

[0001] This utility model relates to the field of manhole liquid level detection, specifically to a manhole liquid level monitoring device. Background Technology

[0002] It can monitor the dynamic changes of liquid level in manholes in real time and accurately. On the one hand, it can issue early warnings of overflowing manholes in the pipeline network, providing a basis for the timely and reasonable scheduling of urban drainage systems. On the other hand, it helps to maintain municipal facilities and prevent sewage or rainwater from overflowing and damaging surrounding roads, buildings, green spaces, etc. It also assists in the formulation of manhole cleaning and maintenance plans.

[0003] Existing technologies suffer from limited signal coverage. Some manhole level monitoring devices using NB-IoT wireless communication have limited signal coverage. In areas where manholes are scattered or obstructed, such as in urban areas with tall buildings, signals may not effectively reach the receiving end. This necessitates adding repeater equipment to extend signal coverage, but this increases cost and system complexity. Battery charging is inconvenient. For some rechargeable battery-powered devices, charging in manholes is a challenge. Due to limited space and safety hazards within manholes, convenient charging interfaces are difficult to install. Devices typically need to be removed for charging, which is not only cumbersome but can also damage the device or affect installation accuracy during removal and reinstallation. Installation is complex, typically involving multiple steps such as electrical connections and sensor mounting, and is difficult to perform in a manhole environment. For example, connecting signal and power lines requires ensuring a secure and airtight connection within the limited space to prevent water ingress or leakage. Problems in any step can lead to device malfunction, and the installation process requires professional personnel, increasing costs. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a manhole liquid level monitoring device.

[0005] According to the technical solution provided in the embodiments of this application, a manhole liquid level monitoring device includes:

[0006] A stainless steel enclosure houses a RUT device and a lithium battery. The RUT device is connected to the lithium battery via a detachable wire, allowing the lithium battery to power the RUT device. The RUT device is located to the side of the lithium battery. The stainless steel enclosure is connected to the well chamber by fastener screws.

[0007] A PVC pipe, which is connected to the well chamber by support screws, has a submersible pressure transmitter passing through it, and the RUT equipment is signal-connected to the submersible pressure transmitter.

[0008] Furthermore, in this invention, the stainless steel box has two spaced-apart connecting holes on its side, and the opening end of the stainless steel box has a retaining ring, which is connected to a detachable door by screws.

[0009] Furthermore, in this invention, both the fixing ring and the detachable door are provided with a plurality of through holes stacked together at equal intervals, so that the stacked through holes are fixed by screws.

[0010] Furthermore, in this utility model, a protruding plate is provided below the detachable door to fit the inner side of the stainless steel box, and a silicone ring is provided on the side of the protruding plate. A charging port is provided above the detachable door, and a silicone plug is provided for the charging port.

[0011] In this utility model, the fixing component is a tripod, and the stainless steel box is connected to the tripod by screws.

[0012] Furthermore, in this invention, the PVC pipe is provided with several spaced water inlet holes.

[0013] In this invention, the support member is further defined as a support rod, used to fix the PVC pipe in the well chamber.

[0014] In this invention, furthermore, the two connecting holes pass through an immersion pressure transmitter and a signal enhancement antenna, respectively. A rubber tube is fitted into each connecting hole, and the immersion pressure transmitter and the signal enhancement antenna are respectively fitted into the rubber tube.

[0015] In summary, the beneficial effects of this application are as follows: During use, the stainless steel enclosure has a hollow chamber housing the RTU device and lithium battery. The stainless steel enclosure is connected to the chamber via tripod screws. The RTU device and lithium battery are connected via a detachable wire, facilitating lithium battery replacement. A removable door is located at the top opening of the stainless steel enclosure. When the lithium battery is damaged, the door can be opened for replacement, and it can also be charged directly through a charging port on the door. The RTU device is equipped with a signal enhancement antenna to expand signal coverage. One end of the submersible pressure transmitter is connected to the RTU device, and the other end passes through a PVC pipe. This device offers high accuracy, cost savings, good waterproofing, easy maintenance, a large signal coverage area, and convenient lithium battery replacement and charging. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of a manhole.

[0018] Figure 2 This is a schematic diagram of the connection structure between the RTU device and the lithium battery.

[0019] Figure 3 This is a three-dimensional structural diagram of a stainless steel box and a removable door.

[0020] Figure 4 This is a front structural diagram of the stainless steel box and the removable door.

[0021] Figure 5 This is a schematic diagram of the structure of the silicone sealing part of the detachable door and the charging port.

[0022] Numbering on the map:

[0023] 1-Stainless steel box; 10-Connection hole; 11-Fixing ring; 2-Removable door; 20-Protruding plate; 21-Charging port; 3-Tripod; 4-PVC pipe; 40-Water inlet; 5-Support rod; 6-RTU equipment; 7-Lithium battery; 8-Submersible pressure transmitter; 9-Signal enhancement antenna; 10-Connection hole; 11-Fixing ring; 12-Silicone sealant; 13-Water baffle; 121-Pull ring; 211-Power socket; 212-Water inlet; 213-Angled ring. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, the manhole liquid level monitoring device of this application consists of a stainless steel box 1, a connecting hole 10, a fixing ring 11, a detachable door 2, a protruding plate 20, a charging port 21, a tripod 3, a PVC pipe 4, a water inlet 40, a support rod 5, an RTU device 6, a lithium battery 7, an immersion pressure transmitter 8, and a signal enhancement antenna 9. Example 1

[0027] like Figures 1-4As shown, the stainless steel box 1 is a hollow chamber with an open end at the top, allowing the RTU device 6 and lithium battery 7 to be placed inside. The side of the stainless steel box 1 has two spaced connection holes 10, with rubber tubes fitted into each hole. A fixing ring 11 is provided at the open end of the stainless steel box 1. Both the fixing ring 11 and the removable door 2 have several equally spaced, stacked through holes, through which screws pass and secure the connection. A protruding plate 20 is located below the removable door 2, fitting snugly against the inner side of the stainless steel box 1. A silicone ring is fixed to the side of the protruding plate 20 to prevent rainwater from entering. A rectangular charging port 21 is located above the removable door 2, fitted with a silicone plug to prevent rainwater from entering and causing leakage.

[0028] like Figures 1-4 As shown, the stainless steel box 1 is connected to the well chamber by screws via a tripod 3 to increase stability. The side of the tripod 3 is triangular, which can hold the stainless steel box in place. The tripod 3 is fixed with screws. A PVC pipe 4 is located on one side of the stainless steel box 1 and is connected to the well chamber by screws via a support rod 5. The PVC pipe 4 is vertically fixed in the well chamber and has several spaced water inlet holes 40. The water inlet holes are small and numerous, allowing water to enter while isolating large particles. The water inlet holes 40 allow rainwater to quickly enter the PVC pipe 4, preventing blockage at one end and inaccurate water level measurement. One end of the submersible pressure transmitter 8 passes through the PVC pipe 4, and the other end passes through one of the connection holes 10 and is fitted into a rubber tube to prevent water from entering. The signal enhancement antenna 9 passes through another connection hole 10 and is fitted into a rubber tube. To improve sealing performance, the rubber tube is also replaced with an explosion-proof gland for fixing the wires and preventing water ingress. The RTU device 6 and lithium battery 7 are waterproofed, and the stainless steel case 1 is further waterproofed, providing double-layer waterproof protection for the RTU device 6 and lithium battery 7 to prevent equipment malfunction.

[0029] In summary, the RTU device 6 and the lithium battery 7 are connected by a detachable cable, facilitating replacement when the lithium battery 7 malfunctions. The detachable door 2 allows for easy removal and replacement of the lithium battery 7 from the stainless steel case 1. The charging port 21 on the detachable door 2 allows for direct insertion of power supply equipment to charge the lithium battery.

[0030] The working principle of this manhole liquid level monitoring device is based on measuring the liquid level height using a submersible pressure transmitter. When the submersible pressure transmitter is placed in the manhole, it monitors liquid level changes in real time and converts the pressure signal into an electrical signal. These electrical signals are then received and processed by the RTU device, which wirelessly transmits the data to the monitoring center via a signal enhancement antenna. A lithium battery pack provides a stable power supply for the entire system, ensuring stable operation for extended periods without an external power source. With the aid of a stainless steel wall-mounted bracket and perforated PVC pipe, the device can be safely installed inside the manhole, ensuring stable signal transmission and waterproofing. The structural design of this manhole liquid level monitoring device fully considers various needs and challenges in practical applications. The RTU device, as the core processing unit, is responsible for receiving and processing signals from the pressure transmitter and has data storage and preliminary analysis functions. The lithium battery pack, as the power source, is designed to provide long-term stable power while also featuring fast charging and overcharge / over-discharge protection functions, ensuring the reliability and safety of the device. Submersible pressure transmitters are components that come into direct contact with the liquid level. Their design must ensure high accuracy and excellent corrosion resistance to withstand the harsh environment inside manholes. The signal-enhancing antenna design ensures stable data transmission to the monitoring center even in areas with limited signal coverage. The stainless steel wall-mounted bracket and perforated PVC pipe design not only guarantee stable installation but also facilitate maintenance and replacement. The rational design of the overall structure allows this equipment to effectively address the shortcomings of existing technologies in practical applications, improving the operational efficiency and safety of urban drainage systems.

[0031] Practical Application: The signals received by this device are displayed on an IoT sensing system platform. This manhole level monitoring device has been installed in several key manholes in Keqiao District, Shaoxing. Through real-time monitoring, the device successfully issued early warnings for several pipeline overflow events, providing data support for timely scheduling of the drainage system. At the same time, the stable operation of the device reduces the number of inspections required by maintenance personnel, improving work efficiency. Example 2

[0032] Because the actual operating environment is relatively humid, it is easy to generate a lot of condensation. During the insertion and removal of the silicone plug 12 on the removable door 2, water may enter the electrical socket, posing a safety hazard. To solve this problem, the following structure was used based on Embodiment 1.

[0033] See Figure 5The detachable door 2 has a charging port 21 on its upper part, and the charging port 21 has a silicone plug 12. The charging port 21 includes a power insertion hole 211 and a water receiving groove 212 disposed around the power insertion hole 211; a slanted ring 213 is disposed above the power insertion hole 211. A pull ring 121 is disposed above the silicone plug 12, and water-blocking blocks 13 are disposed on both sides above the silicone plug 12.

[0034] Specifically, the charging port 21 corresponds to the charging point of the lithium battery, and the power plug is inserted into the lithium battery through the charging port for charging. Alternatively, the charging point of the lithium battery is protruding and directly snaps into the power socket 211 for easy charging. The water collection tank 212 is convenient for storing dew. Since there is moisture in the removable door 2 or water may accidentally overflow if the silicone plug 12 is removed, and the power socket 211 is higher than the water collection tank 212, the water will enter the water collection tank 212 instead of entering the power socket 211 and causing leakage. Similarly, the inclined ring 213 can promptly guide water to the surrounding water collection tanks 212.

[0035] Furthermore, the silicone plug 12 is for sealing performance and is generally designed to fit tightly with the removable door 2. However, inserting or removing the silicone plug 12 may cause water to splash onto its surface, potentially entering the electrical socket 211. The water-blocking block 13 prevents water from splashing out. The pull ring 121 reduces the force required to remove the silicone plug 12, minimizing shaking and preventing water from splashing out.

[0036] The above structure is generally used for applications with relatively little dew. If a large amount of water has accumulated or the area has been submerged, it is necessary to absorb water before charging.

[0037] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A manhole liquid level monitoring device, characterized in that it comprises: A stainless steel box (1) is provided inside which a RUT device (6) and a lithium battery (7) are installed. The RUT device (6) is connected to the lithium battery (7) by a detachable wire so that the lithium battery (7) supplies power to the RUT device (6). The RUT device (6) is located on the side of the lithium battery (7). The stainless steel box (1) is connected to the well chamber by fastener screws. A PVC pipe (4) is connected to the well chamber by a support screw, and an immersion pressure transmitter (8) passes through the PVC pipe (4). The RUT device (6) is signal-connected to the immersion pressure transmitter (8).

2. The manhole liquid level monitoring device according to claim 1, characterized in that: The stainless steel box (1) has two spaced connection holes (10) on its side, and the opening end of the stainless steel box (1) is provided with a fixing ring (11), which is connected to the detachable door (2) by screws.

3. The manhole liquid level monitoring device according to claim 2, characterized in that: Both the fixing ring (11) and the detachable door (2) are provided with several through holes stacked together at equal intervals, so that the stacked through holes can be fixed by screws.

4. A device according to claim 1 or 3, characterised in that: The detachable door (2) has a protruding plate (20) that fits against the inside of the stainless steel box (1) at the bottom. The side of the protruding plate (20) is provided with a silicone ring. The detachable door (2) has a charging port (21) at the top, and the charging port (21) is provided with a silicone plug (12).

5. The device of claim 1, wherein: The fixing component is a tripod (3), and the stainless steel box (1) is connected to the tripod (3) by screws.

6. The manhole liquid level monitoring device according to claim 1, characterized in that: The PVC pipe (4) is provided with several spaced water inlet holes (40).

7. A manhole liquid level monitoring device according to claim 1 or 6, characterized in that: The support is a support rod (5), which is used to fix the PVC pipe (4) in the well chamber.

8. A manhole liquid level monitoring device according to claim 1 or 2, characterized in that: The two connection holes (10) pass through the submersible pressure transmitter (8) and the signal enhancement antenna (9) respectively. A rubber tube is sleeved in each of the connection holes (10), and the submersible pressure transmitter (8) and the signal enhancement antenna (9) are respectively sleeved in the rubber tube.

9. A manhole liquid level monitoring device according to claim 4, characterized in that: The charging port (21) includes a plug hole (211) and a water receiving groove (212) disposed around the plug hole (211); an inclined ring (213) is disposed above the plug hole (211).

10. A manhole liquid level monitoring device according to claim 9, characterized in that: A pull ring (121) is provided above the silicone plug (12), and water-blocking blocks (13) are provided on both sides above the silicone plug (12).

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