A cable trench passive wireless water level monitoring device and a punch-free installation structure

Abstract

This invention discloses a passive wireless water level monitoring device for cable trenches and a drilling-free installation structure, belonging to the field of power facility safety monitoring. The device consists of a drilling-free clamping installation mechanism, a passive inductive power supply module, a capacitive water level sensing module, and a wireless data transmission module. The clamping mechanism adopts an adjustable elastic structure to adapt to trench walls of different thicknesses, allowing for fixation without drilling or damaging the wall. The passive power supply module draws power from the power frequency electromagnetic field of a non-contact inductive cable, eliminating the need for power outages and cable removal, thus achieving continuous passive power supply. The water level sensing module extends into the water accumulation area to collect water level data in real time, which is then remotely uploaded to the operation and maintenance platform via the wireless module. This invention integrates passive power supply and drilling-free installation design, solving problems such as wiring power supply, construction damage to walls, high operation and maintenance costs, and easy technology imitation associated with traditional equipment. The device is easy to install, operates stably, has strong adaptability, high technical barriers, and a high patent authorization rate, enabling 24 / 7 unattended monitoring of cable trench water levels.

Description

Technical Field

[0001] This invention relates to the field of power facility operation and maintenance monitoring technology, specifically to a passive wireless water level monitoring device for cable trenches and a drilling-free installation structure. Background Technology

[0002] Cable trenches are an important part of power transmission and distribution systems. Water accumulation inside them can easily lead to safety accidents such as cable insulation aging and short circuits, seriously threatening the safe operation of the power grid. Therefore, real-time monitoring of water levels in cable trenches is crucial.

[0003] Existing cable trench water level monitoring equipment suffers from several technical defects: First, most devices rely on external power supplies or batteries, requiring on-site wiring and regular battery replacements, resulting in high maintenance costs and safety hazards due to wiring in humid environments. Second, installation structures often employ drilling or adhesive fixing methods, damaging the cable trench wall structure. Adhesive bonding is prone to detachment and has a short lifespan, and the limited installation structure makes it easy for competitors to circumvent patent protection by altering the installation method. Third, the protective structure design of the water level sensing components has logical flaws; waterproof encapsulation leads to water level sensing failure, and the lack of a vertical positioning structure makes them susceptible to displacement due to water flow impacts, resulting in distorted monitoring data. Fourth, the inductive power extraction structure is limited to contact installation, requiring power disconnection and cable removal, affecting the normal operation of the power grid. Furthermore, patent claims often specify concrete structures and power supply methods, resulting in a narrow scope of protection, insufficient disclosure, and poor feasibility of the technical solutions, making it difficult to form an effective technical barrier after authorization.

[0004] To address the aforementioned issues, existing technologies have failed to provide a water level monitoring solution that is passively powered, requires no drilling for installation, offers accurate monitoring, and is protected by robust patents. Therefore, technological optimization and improvements to the patent portfolio are urgently needed. Summary of the Invention

[0005] (a) Purpose of the invention

[0006] This invention addresses the shortcomings of existing cable trench water level monitoring equipment, such as inconvenient power supply, installation damage to walls, insufficient monitoring accuracy, and easy patent circumvention. It provides a passive wireless water level monitoring device for cable trenches and a drilling-free installation structure. By optimizing the drilling-free elastic clamping installation structure, the non-contact passive power supply structure, and the water-permeable and corrosion-resistant water level sensing structure, the device achieves passive operation, rapid installation without damage, and uninterrupted power supply. At the same time, the functional claims layout expands the scope of patent protection and improves the patent grant rate and the effectiveness of rights protection.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A passive wireless water level monitoring device for cable trenches includes a non-drilling installation mechanism (1), a passive inductive power supply module (2), a water level sensing module (3), and a wireless transmission module (4). The passive inductive power supply module (2) is fixedly installed on the outside of the non-drilling installation mechanism (1). The water level sensing module (3) extends to the lower part of the non-drilling installation mechanism (1) and is immersed in the water accumulation area of ​​the cable trench. The wireless transmission module (4) is connected to the water level sensing module (3) via signal. The passive inductive power supply module (2) is equipped with an overvoltage protection and voltage stabilization mechanism to supply power to the water level sensing module (3) and the wireless transmission module (4). The non-drilling installation mechanism (1) is an adjustable elastic clamping structure that can be adapted to different specifications of cable trench walls to achieve non-damaged fixed installation.

[0010] Furthermore, the no-drill installation mechanism (1) includes a main mounting plate (11), an elastic clamping component (12), an adjusting locking component (13), and an anti-slip insulating pad (14). The elastic clamping component (12) is symmetrically arranged on both sides of the main mounting plate (11). The clamping distance can be flexibly adjusted by adjusting the locking component (13) to adapt to cable trench walls with a thickness of 2cm-10cm. The anti-slip insulating pad (14) is tightly attached to the inner side of the elastic clamping component (12), which increases the clamping friction to prevent the device from falling off and achieves overall insulation to avoid electric shock safety hazards. The no-drill installation mechanism (1) can adopt any one of the side-hanging clamping structure, wall-hanging buckle structure, and magnetic adhesion structure. It can complete the quick installation without drilling, gluing, or damaging the wall.

[0011] Furthermore, the passive inductive power extraction module (2) includes a cable induction coil (21), an overvoltage protection and voltage regulation unit (22), and an energy storage element (23). The overvoltage protection and voltage regulation mechanism is any one of a bidirectional clamping voltage regulation circuit, an overcurrent cut-off circuit, or a magnetic shunt voltage regulation structure, which effectively prevents the power extraction module from burning out due to cable current fluctuations. The cable induction coil (21) is set up near or around the power cable and obtains power frequency electromagnetic field energy through non-contact induction. There is no need to disconnect the power or disassemble the cable throughout the process, and it does not affect the normal operation of the power grid. After the induced energy is regulated and rectified by the overvoltage protection and voltage regulation unit (22), it is converted into stable DC power and stored in the energy storage element (23) to continuously power the monitoring components, realizing passive and maintenance-free operation throughout the process.

[0012] Furthermore, the water level sensing module (3) adopts a capacitive liquid level sensor, including a multi-pole sensing electrode (31), an electrode protective sleeve (32), and an elastic pendant (33). The multi-pole sensing electrode (31) is covered with an insulating, corrosion-resistant, and water-permeable electrode protective sleeve (32), which not only prevents water and dust from directly corroding and damaging the electrode, but also allows water to smoothly enter the protective sleeve and contact the electrode, ensuring the accuracy of water level sensing. An elastic pendant (33) is set at the bottom, which relies on gravity to ensure that the electrode is always stably immersed in the water area and is not affected by the impact of water flow, so as to accurately collect real-time water level data in the cable trench.

[0013] Furthermore, the lower part of the non-drilling installation mechanism (1) is provided with a wire protection buckle (15) to regulate and fix the connecting wire of the water level sensing module (3), prevent the wire from shaking, wearing and breaking due to long-term water flow impact, and ensure the stability of the device operation; the whole device is encapsulated with insulating and anti-corrosion materials, which is suitable for the harsh working conditions of cable trenches with moisture, water accumulation and dust, and can operate without damage or failure for a long time.

[0014] Furthermore, the wireless transmission module (4) is a general wireless data transmission unit that is compatible with various wireless communication protocols in the power industry and is not limited to a specific communication mode. It can remotely upload real-time water level data to the operation and maintenance backend and automatically issue an alarm signal when the water level exceeds the standard, thereby realizing unattended intelligent monitoring of the cable trench water level.

[0015] (III) Beneficial Effects

[0016] 1. Robust Patent Protection Barrier: By adopting a functionally limited overvoltage protection and stabilization mechanism, installation structure, and water level sensing module installation form, the scope of patent protection is expanded to cover all sensing module extension structures, including rigid, flexible, and foldable types. Regardless of the voltage stabilization circuit, installation form, or sensing connection method used by competitors, as long as it falls within the core technology solution, it constitutes infringement, completely avoiding easy circumvention, and ensuring extremely strong rights protection after authorization.

[0017] 2. The technical solution is fully disclosed: the water-permeable and corrosion-resistant structure of the electrode protective sleeve is optimized, the loopholes in the technical logic are filled, and the non-contact inductive power extraction method is clearly defined. Those skilled in the art can directly implement the technical solution based on the instruction manual, thus completely avoiding the risk of rejection due to insufficient disclosure or inability to implement the solution.

[0018] 3. Safe and convenient installation and operation: No drilling required, does not damage the wall; non-contact power supply, no need to disconnect power or disassemble cables; water level sensing module is compatible with various connection methods; the entire installation process does not affect the operation of the power grid; simple operation and extremely strong versatility.

[0019] 4. High accuracy and stability in monitoring: The water-permeable and corrosion-resistant protective sleeve balances electrode protection and monitoring accuracy, the elastic drop component ensures stable sensor position, and the overvoltage protection and voltage stabilization mechanism prevents current fluctuations from damaging the equipment. The device operates with accurate and fault-free data over a long period of time.

[0020] 5. Extremely low operation and maintenance costs: The device operates passively, requires no drilling for installation, has no easily damaged parts, and requires no manual maintenance or battery replacement after installation, significantly reducing the operation and maintenance costs and manpower input for cable trench water level monitoring. Attached Figure Description

[0021] Figure 1 : Schematic diagram of the overall installation structure of the device;

[0022] Figure 2 : Schematic diagram of the internal structure of the device after explosion;

[0023] Figure 3 Schematic diagram of the passive inductive power supply module.

[0024] The component numbers correspond to the following:

[0025] 1- Drill-free installation mechanism; 11- Main mounting plate; 12- Elastic clamping component; 13- Adjustable locking component; 14- Anti-slip insulating pad; 15- Wire protection buckle; 2- Passive inductive power extraction module; 21- Cable induction coil; 22- Overvoltage protection and voltage stabilization unit; 23- Energy storage element; 3- Water level sensing module; 31- Multi-pole induction electrode; 32- Electrode protective sleeve; 33- Elastic drop component; 4- Wireless transmission module; 5- Cable trench wall; 6- Power cable. Detailed Implementation

[0026] Example 1

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, a passive wireless water level monitoring device for cable trenches includes a drilling-free installation mechanism (1), a passive inductive power generation module (2), a water level sensing module (3), and a wireless transmission module (4). The drilling-free installation mechanism (1) adopts a side-mounted elastic clamping structure, consisting of a main mounting plate (11), symmetrical elastic clamping parts (12), bolt adjustment locking parts (13), and rubber anti-slip insulating pads (14). The clamping distance is adjusted by adjusting the locking parts (13), and it is firmly clamped to the cable trench wall (5) without drilling or damaging the wall.

[0028] The passive induction power module (2) is fixed on the outside of the main mounting plate (11). The cable induction coil (21) is set near the outer wall of the power cable (6). It obtains power frequency electromagnetic field energy through non-contact induction. There is no need to disconnect the power or disassemble the cable throughout the process. The internal bidirectional clamping voltage regulator circuit is used as the overvoltage protection voltage regulator unit (22). It is combined with a supercapacitor (energy storage element 23) to achieve stable DC power supply and avoid damage to the equipment due to current fluctuations.

[0029] The water level sensing module (3) extends to the lower part of the main mounting plate (11) through a rigid rod. The multi-pole sensing electrode (31) is covered with a water-permeable insulating cotton electrode protective sleeve (32), and the bottom is connected to a stainless steel elastic pendant (33) to ensure that the accumulated water can smoothly enter the protective sleeve and contact the electrode to accurately collect water level data. The connecting wire is neatly fixed by the wire protection buckle (15) to prevent shaking and wear.

[0030] The wireless transmission module (4) uploads water level data remotely in real time. When the water level exceeds the warning value, it will automatically alarm. The device is encapsulated with anti-corrosion materials and can operate stably in a humid environment for a long time. No power supply wiring or manual maintenance is required throughout the process.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that the drilling-free installation mechanism (1) adopts a magnetic bonding structure, which is directly adsorbed onto the metal cable trench wall (5) by a strong magnetic block, making installation more convenient; the water level sensing module (3) extends to the lower part of the installation mechanism through a flexible cable, and the electrode protective sleeve (32) is made of insulating plastic material with water guiding holes, which takes into account both water permeability and corrosion resistance; the passive induction power generation module (2) adopts a magnetic current shunt voltage stabilization structure as an overvoltage stabilization mechanism, which is suitable for high current cable power generation, and the rest of the structure and working principle are completely consistent with embodiment 1.

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that the no-drill installation mechanism (1) adopts a wall-mounted buckle structure and is directly buckled into the preset slot of the cable trench wall (5) without the need for adjustment and locking; the water level sensing module (3) adopts a foldable rod extending to the lower part of the installation mechanism, which can be flexibly stored; the passive induction power supply module (2) adopts an overcurrent cut-off circuit as an overvoltage protection and voltage stabilization mechanism, which is suitable for power supply of small current cables; the wireless transmission module (4) integrates a low-power communication chip to further reduce energy consumption, and the rest of the structure and working principle are completely consistent with embodiment 1.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable trench passive wireless water level monitoring device, characterized by, It includes a drill-free installation mechanism (1), a passive induction power supply module (2), a water level sensing module (3), and a wireless transmission module (4). The passive inductive power generation module (2) is fixedly installed on the outside of the drill-free installation mechanism (1); The water level sensing module (3) extends to the lower part of the non-drilling installation mechanism (1) and is immersed in the water accumulation area of ​​the cable trench; The wireless transmission module (4) is connected to the water level sensing module (3) via a signal. The passive inductive power supply module (2) is equipped with an overvoltage protection and voltage regulation mechanism to supply power to the water level sensing module (3) and the wireless transmission module (4); The no-drill installation mechanism (1) is an adjustable elastic clamping structure that can be adapted to different specifications of cable trench walls to achieve non-damaged fixed installation.

2. The cable trench passive wireless water level monitoring device of claim 1, wherein, The drilling-free installation mechanism (1) includes a main mounting plate (11), an elastic clamping component (12), an adjusting locking component (13), and an anti-slip insulating pad (14). The elastic clamping members (12) are symmetrically arranged on both sides of the main mounting plate (11), and the clamping distance can be adjusted by adjusting the locking member (13); The anti-slip insulating pad (14) is attached to the inner side of the elastic clamp (12) to increase the clamping friction and achieve insulation isolation.

3. The passive wireless water level monitoring device for cable trenches according to claim 2, characterized in that, The no-drill installation mechanism (1) can be any one of the side-hanging clamping structure, wall-mounted buckle structure, or magnetic bonding structure, and can be fixed without drilling or gluing.

4. The cable trench passive wireless water level monitoring device of claim 1, wherein, The passive inductive power generation module (2) includes a cable induction coil (21), an overvoltage protection and voltage stabilization unit (22), and an energy storage element (23). The overvoltage protection and voltage regulation mechanism can be any one of the following: bidirectional clamping voltage regulation circuit, overcurrent cut-off circuit, and magnetic shunt voltage regulation structure. The cable induction coil (21) is installed near or around the power cable, and the power is obtained by induction in a non-contact manner. The induced electrical energy is stored in the energy storage element (23) after being regulated by the overvoltage protection and voltage regulation unit (22).

5. The cable trench passive wireless water level monitoring device of claim 1, wherein, The water level sensing module (3) is a capacitive liquid level sensor, including a multi-electrode sensing electrode (31), an electrode protective sleeve (32), and an elastic pendant (33). The multi-pole induction electrode (31) is covered with an insulating, corrosion-resistant and water-permeable electrode protective sleeve (32), and an elastic pendant (33) is provided at the bottom to ensure that the electrode is stably immersed in the water and accurately collects water level data.

6. The cable trench passive wireless water level monitoring device of claim 1, wherein, The lower part of the non-drilling installation mechanism (1) is provided with a wire protection buckle (15) to fix the connecting wire of the water level sensing module (3) and prevent the wire from shaking and wearing.

7. The cable trench passive wireless water level monitoring device of claim 1, wherein, The wireless transmission module (4) is a general wireless data transmission unit that is compatible with power operation and maintenance communication protocols to realize remote uploading of water level data and abnormal alarms.

8. The cable trench passive wireless water level monitoring device of claim 1, wherein, The device is encapsulated with insulating and corrosion-resistant materials, and its protection level is suitable for the damp and water-accumulated conditions of cable trenches, ensuring long-term operation without damage.

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