A cable well safety early warning interface device

Abstract

This utility model belongs to the field of electrical safety monitoring technology, specifically relating to a cable well safety early warning interface device, including a housing, a puncture power extraction module, a temperature sensor, a current transformer, a signal processing circuit board, a network cable interface, and an early warning device. An insulating block is connected to the bottom of the housing, and the insulating block is detachably connected to the cable via a connector. The puncture power extraction module, temperature sensor, and current transformer are all electrically connected to the signal processing circuit board. The puncture power extraction module is used to detect the voltage of the cable. The detection end of the temperature sensor penetrates the housing and the insulating block and abuts against the surface of the cable; the temperature sensor is used to detect the temperature of the cable. The current transformer is used to detect the current signal of the cable. The signal processing circuit board is used to transmit the processed voltage signal, temperature signal, and current signal to the early warning device through the network cable interface. This solution simplifies the complex wiring of traditional monitoring systems and improves installation efficiency and safety.

Description

Technical Field

[0001] This utility model belongs to the field of electrical safety monitoring technology, specifically relating to a cable well safety early warning interface device. Background Technology

[0002] With the acceleration of urbanization, high-rise buildings are constantly emerging. In these buildings, cable shafts serve as critical channels for power transmission, making their safety paramount. Abnormal voltage, current overload, or excessively high temperature within cable shafts can potentially trigger serious accidents such as fires, threatening people's lives and property. Therefore, real-time and effective safety monitoring and early warning systems for cable shafts are essential. In the current field of electrical safety monitoring technology, there are many problems with monitoring devices for cable wells in high-rise buildings. On the one hand, the wiring is extremely complex. Traditional cable well monitoring devices require separate installation of voltage, current, and temperature sensors, with each sensor individually wired to the main control equipment. This wiring method is not only cumbersome but also prone to errors during actual operation, greatly increasing the difficulty of installation and debugging. On the other hand, installation is inefficient. Installing these sensors often requires stripping or disconnecting cables, which undoubtedly increases the difficulty of construction and also poses significant safety hazards. Improper operation could lead to electrical accidents. Furthermore, the difficulty of subsequent maintenance is a major pain point of existing technologies. Due to the dispersed placement of various sensors and the numerous interconnected cables, these sensors and cables are prone to aging over time. When a fault occurs, troubleshooting requires significant time and manpower, resulting in high costs. Taking voltage acquisition as an example, current technologies require contact with exposed conductors, constantly exposing operators to the risk of electric shock. In the application of current transformers and temperature sensors, each requires independent power supply and signal transmission lines, leading to extensive redundancy in field cabling. This not only affects the aesthetics of the wiring but also further increases the probability of faults and the difficulty of troubleshooting. In summary, existing monitoring technologies for cable wells in high-rise buildings have many problems and shortcomings in terms of wiring, installation, and maintenance, making it difficult to meet the growing safety management needs of cable wells in high-rise buildings. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a cable well safety early warning interface device, which solves the numerous problems and defects in the existing high-rise building cable well monitoring technology in terms of wiring, installation, and maintenance, making it difficult to meet the growing safety management needs of high-rise building cable wells.

[0004] The technical solution adopted by this utility model is as follows: a cable well safety early warning interface device, including a box, a puncture power extraction module, a temperature sensor, a current transformer, a signal processing circuit board, a network cable interface, and an early warning device; An insulating block is connected to the bottom of the box, and a connector is provided on the insulating block. The insulating block is detachably connected to the cable through the connector. The puncture power extraction module, temperature sensor, signal processing circuit board, and network port are all housed inside the box. The current transformer is detachably connected to the insulating block. The puncture power extraction module, temperature sensor, and current transformer are all electrically connected to the signal processing circuit board. The puncture power extraction module has a puncture power extraction end that penetrates the housing, the insulating block, and the insulation layer of the cable and pierces into the cable. The puncture power extraction module is used to detect the voltage of the cable and feed back the voltage signal to the signal processing circuit board. The detection end of the temperature sensor passes through the housing and the insulating block and abuts against the surface of the cable. The temperature sensor is used to detect the temperature of the cable and feed back the temperature signal to the signal processing circuit board. The current transformer is used to detect the current signal of the cable and feed the current signal back to the signal processing circuit board. The signal processing circuit board is used to transmit the processed voltage signal, temperature signal and current signal to the early warning device through the network cable interface.

[0005] Furthermore, the puncture-based power extraction module includes a nut, a screw, and a power extraction steel needle; The bottom of the box has a clearance hole, and the insulating block has a mounting hole at the position corresponding to the clearance hole. The diameter of the clearance hole is larger than the diameter of the mounting hole. The nut is fixedly installed in the mounting hole. The power-taking steel needle is fixedly inserted into the screw. The lower end of the power-taking steel needle passes through the screw and can penetrate into the cable. The screw is threaded into the nut. The upper end of the power-taking steel needle is electrically connected to the signal processing circuit board.

[0006] Furthermore, the temperature sensor is a surface-mount temperature sensor, which includes a surface-mount detection end and a temperature signal output end. The surface-mount detection end passes through the housing and the insulating block in sequence and is fixedly connected to the bottom of the insulating block. The surface-mount detection end can abut against the surface of the cable. The temperature signal output end is electrically connected to the signal processing circuit board.

[0007] Furthermore, the current transformer is an open-type current transformer, including a current detection center hole, which is wrapped around the cable.

[0008] Furthermore, a connecting strip is fixedly provided on the front side wall of the current transformer, and a buckle is provided on the rear side wall of the connecting strip. A limiting seat is provided on the front side wall of the insulating block. The limiting seat has a cavity structure and an opening at the upper end. A locking block is fixedly provided inside the limiting seat corresponding to the buckle, and the buckle engages with the locking block.

[0009] Furthermore, the connector is a strip, and the insulating block has two through holes, with a strip inserted into each of the two through holes. The strip is used to bind the insulating block and the cable.

[0010] The beneficial effects of this utility model are: 1. Simplified wiring: By integrating the puncture power extraction module, temperature sensor and current transformer into a single box and processing the signal uniformly through the signal processing circuit board, the workload of on-site wiring is greatly reduced; the voltage signal is obtained by puncture power extraction, avoiding the need to strip or disconnect the cable in the traditional method, reducing wiring nodes and lowering the risk of wiring errors.

[0011] 2. Improved installation efficiency: The use of open-type current transformers and detachable connector strip structure allows for quick installation and disassembly of equipment without cutting the cable, improving work efficiency; the design of the piercing power extraction module allows for voltage acquisition without damaging the cable insulation layer, and a single piercing completes power extraction and sensor deployment, greatly simplifying the installation process and reducing construction difficulty and safety hazards.

[0012] 3. Convenient Maintenance: All sensors and related components are integrated into a single enclosure, facilitating management and maintenance. In case of problems, the fault location can be quickly identified and repaired. The reduced exposed wiring slows down aging caused by environmental factors, thus extending the overall system's lifespan.

[0013] 4. Enhanced safety: The piercing power extraction module directly penetrates the cable insulation layer to contact the conductor, avoiding direct contact with exposed conductors and effectively reducing the risk of electric shock to operators; by monitoring parameters such as voltage, current and temperature in real time, potential safety hazards can be detected in a timely manner, preventing accidents such as fires. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention (first perspective). Figure 3 This is a partial structural schematic diagram of the present invention (second perspective). Figure 4 This is a schematic diagram showing the disassembly of the insulating block and the current transformer in this utility model; Figure 5 This is a partial cross-sectional view of the present invention; The attached diagram is labeled as follows: Box 1, Insulating block 11, Through hole 12, Limiting seat 13, Locking block 14, Clearing hole 15, Mounting hole 16, Piercing power extraction module 2, Nut 21, Screw 22, Power extraction steel needle 23, Temperature sensor 3, Patch detection end 31, Temperature signal output end 32, Current transformer 4, Current detection center hole 41, Connecting strip 42, Buckle 43, Signal processing circuit board 5, Network cable interface 6, Strip 7, Cable 8. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figures 1-5 As shown, a cable well safety early warning interface device includes a housing 1, a puncture power extraction module 2, a temperature sensor 3, a current transformer 4, a signal processing circuit board 5, a network cable interface 6, and an early warning device. An insulating block 11 is connected to the bottom of the box body 1. A connector is provided on the insulating block 11. The insulating block 11 is detachably connected to the cable 8 through the connector. In this embodiment, the insulating block is made of bakelite or fire-retardant plastic. The box body 1 is hollow and a cover is snapped onto the upper end.

[0019] The puncture power extraction module 2, temperature sensor 3, signal processing circuit board 5 and network port are all housed inside the box 1. The current transformer 4 is detachably connected to the insulating block 11. The puncture power extraction module 2, temperature sensor 3 and current transformer 4 are all electrically connected to the signal processing circuit board 5. The puncture power extraction module 2 has its puncture power extraction end penetrating the housing 1, the insulating block 11 and the insulation layer of the cable 8 and piercing into the cable 8. The puncture power extraction module 2 is used to detect the voltage of the cable 8 and feed back the voltage signal to the signal processing circuit board 5. The detection end of the temperature sensor 3 passes through the housing 1 and the insulating block 11 and abuts against the surface of the cable 8. The temperature sensor 3 is used to detect the temperature of the cable 8 and feed back the temperature signal to the signal processing circuit board 5. The current transformer 4 is used to detect the current signal of the cable 8 and feed the current signal back to the signal processing circuit board 5. The signal processing circuit board 5 is used to transmit the processed voltage signal, temperature signal and current signal to the early warning device through the network cable interface 6.

[0020] In this embodiment, the signal processing circuit board 5 is used to process the voltage, current, and temperature signals collected by the puncture power extraction module 3, the current transformer 4, and the patch temperature sensor 2 into digital signals. The network cable interface 6 is an RJ45 network cable interface 6, which is electrically connected to the early warning device via a network cable. The RJ45 network cable interface 6 is located inside the housing 1 and is electrically connected to the signal processing circuit board 5. In this solution, the RJ45 network cable interface 6 and the network cable are used to transmit the signal processed by the signal processing circuit board 5 to the early warning device. Specifically, the RJ45 network cable interface 6 supports PoE power supply, providing power to the interface device while transmitting the signal, eliminating the need for an additional power cable and reducing the complexity of the cabling within the cable well 8.

[0021] The early warning device is a cable well early warning device, model SLK-DLJ301, which is installed on the wall or bracket of the cable well and receives data transmitted by the interface device nearby.

[0022] The interface device collects analog (such as voltage, current, and temperature) and digital (such as switch status) signals from the cable and transmits them to the early warning device in the cable well of the high-rise building. The early warning device, after processing by a microprocessor, converts the collected analog and digital signals into RS-485 signals and outputs them to the edge computing smart gateway, or directly transmits the analog and digital signals collected by the interface device to the monitoring platform via a 5G communication module. Specifically, the microprocessor of the cable well early warning device performs the following signal processing: analog signals are converted to digital signals via ADC (Analog-to-Digital Converter); digital signals are encapsulated through protocols or processed by logic.

[0023] Specifically, the processed signal integrated in the signal processing circuit board 5 is transmitted to the early warning device. The early warning device can choose different communication protocols and technologies to forward data based on the needs of the actual application scenario. For example, for short-distance applications requiring high reliability, RS485 or CAN bus can be selected; while for applications requiring wider coverage, wireless technologies such as Wi-Fi or LoRa can be chosen. To achieve long-distance data transmission, especially in cross-regional or real-time monitoring scenarios, the early warning device uses the high-speed, low-latency network service provided by the 5G communication module for remote wireless transmission, ensuring that data can quickly and accurately reach the remote monitoring center or cloud platform. It also transmits data to the edge computing terminal, and then uniformly transmits the data to the remote monitoring center or cloud platform.

[0024] As a preferred option, such as Figure 2 , 3 As shown in Figure 5, the piercing power extraction module 2 includes a nut 21, a screw 22, and a power extraction needle 23; a clearance hole 15 is provided at the bottom of the housing 1, and a mounting hole 16 is provided on the insulating block 11 at the position corresponding to the clearance hole 15. The diameter of the clearance hole 15 is larger than the diameter of the mounting hole 16. The nut 21 is fixedly installed in the mounting hole 16, and the power extraction needle 23 is fixedly inserted into the screw 22. The lower end of the power extraction needle 23 penetrates the screw 22 and can pierce into the cable 8. The screw 22 is threadedly connected to the nut 21, and the upper end of the power extraction needle 23 is electrically connected to the signal processing circuit board 5.

[0025] In this embodiment, both the nut 21 and the screw 22 are made of plastic. The diameter of the clearance hole 15 is larger than the diameter of the mounting hole 16, allowing the head of the screw 22 to be inserted into the clearance hole 15 and abut against the top of the insulating block 11. By fixing the power-collecting needle 23 inside the screw 22, rotating the screw 22 inside the nut 21 can adjust the vertical position of the power-collecting needle 23, thereby adjusting the position of the power-collecting needle 23 according to the insulation layer thickness of the cable 8. Figure 3 As shown, the upper end of the power-taking steel needle 23 is connected to the signal processing circuit board 5 via a wire and is electrically connected to the signal processing circuit board 5, thereby transmitting the detected voltage signal to the signal processing circuit board 5. The power-taking steel needle 23 is made of copper stainless steel piercing nail, and the piercing power-taking module 2 adopts an insulated piercing structure (IDC technology) to directly pierce the insulation layer of the cable 8 to obtain the voltage signal without stripping the wire, ensuring the safety and convenience of operation.

[0026] In other embodiments, the upper part of the mounting hole 16 can be tapped into a nut, thereby reducing the need for nut installation.

[0027] Furthermore, a rubber ring washer is fixedly fitted inside the clearance hole 15. The bottom of the rubber ring washer is fixedly connected to the top of the insulating block 11. The lower end of the screw passes through the rubber ring washer and is threadedly connected to the nut 21 in the mounting hole 16. By setting the rubber ring washer, the screw 22 is made more stable.

[0028] As a preferred option, such as Figures 2 to 3 As shown, the temperature sensor 3 is a surface-mount temperature sensor 3. The surface-mount temperature sensor 3 includes a surface-mount detection end 31 and a temperature signal output end 32. The surface-mount detection end 31 passes through the housing 1 and the insulating block 11 in sequence and is fixedly connected to the bottom of the insulating block 11. The surface-mount detection end 31 can abut against the surface of the cable 8. The temperature signal output end 32 is electrically connected to the signal processing circuit board 5.

[0029] In this embodiment, the surface-mount temperature sensor 3 is model TT-K-30. The surface-mount temperature sensor 3 monitors the temperature of the cable 8 in real time through thermoelectric conversion. Its surface-mount detection end 31 is in direct contact with the surface of the cable 8. Figure 3 As shown, the temperature signal output terminal 32 is connected to the processing circuit through a wire to achieve efficient and accurate temperature acquisition.

[0030] As a preferred embodiment, the current transformer 4 is an open-type current transformer 4, including a current detection center hole 41, which is wrapped around the cable 8.

[0031] In this embodiment, the open-type current transformer 4 is model GL-KH24AL. The open-type current transformer 4 includes an upper housing and a lower housing hinged at the front end. A current detection center hole 41 is formed between the upper and lower housings. The rear ends of the upper and lower housings are engaged by plastic clips 43 and plastic blocks 14, thereby allowing the center hole of the open-type current transformer 4 to wrap around the cable 8. Figure 3 As shown, the signal output terminal of the open-type current transformer 4 is electrically connected to the signal processing circuit board 5 via a signal line. The signal line passes through the housing 1 and extends into the housing 1 to be electrically connected to the signal processing circuit board 5.

[0032] As a preferred option, such as Figures 1 to 4 As shown, a connecting strip 42 is fixedly provided on the front side wall of the current transformer 4, and a buckle 43 is provided on the rear side wall of the connecting strip 42. A limiting seat 13 is provided on the front side wall of the insulating block 11. The limiting seat 13 has a hollow structure and an open upper end. A locking block 14 is fixedly provided inside the limiting seat 13 corresponding to the buckle 43. The buckle 43 and the locking block 14 are engaged.

[0033] In this embodiment, by using the connecting strip 42, buckle 43, limit seat 13 and locking block 14 together, buckle 43 is locked onto locking block 14 of limit seat 13, so that current transformer 4 can be locked onto insulating block 11, thus realizing the integration of current transformer 4 and insulating block 11.

[0034] As a preferred option, such as Figures 1 to 2 As shown, the connector is a strip 7. Two through holes 12 are formed on the insulating block 11, and the strip 7 is inserted into each of the two through holes 12. The strip 7 is used to bind the insulating block 11 and the cable 8 together. By binding the insulating block 11 and the cable 8 together with the strip 7, the cable 8 is fixed and limited at the bottom of the insulating block 11, facilitating the piercing of the power extraction module 2, temperature sensor 3, and current transformer 4 to detect the corresponding signals.

[0035] The working principle of this utility model is as follows: In use, open the open-type current transformer 4 so that the cable 8 is inserted into the current detection center hole 41 of the open-type current transformer 4. Close the open-type current transformer 4, ensuring that it is securely wrapped around the cable 8. Place the bottom of the insulating block 11 against the cable 8 and adjust its position so that the patch detection end 31 of the patch temperature sensor 3 can be tightly attached to the upper surface of the cable 8 to ensure accurate detection of temperature changes in the cable 8. Use the strip 7 to pass through the through hole 12 on the insulating block 11 to firmly bind the insulating block 11 to the cable 8, ensuring that the entire device will not loosen or shift during use. Then, turn the screw 22 inside the nut 21, which will cause the lower end of the power-taking steel needle 23 to gradually move downward until it penetrates the insulation layer of the cable 8. The needle 23 pierces into the inside of cable 8, directly contacting the conductor. Once the needle successfully pierces into cable 8, voltage signal acquisition can begin. After installation, the piercing power extraction module 2, temperature sensor 3, and current transformer 4 monitor the voltage, temperature, and current of cable 8 in real time and feed back the voltage, temperature, and current signals to the signal processing circuit board 5. The processed signals are transmitted to the early warning device through the RJ45 network cable interface 6 and the network cable, and an alarm is issued when necessary to remind relevant personnel to take measures. This solution provides an interface device that integrates piercing power extraction, multi-sensor signal acquisition, and network cable transmission, solving the problems of complex wiring and low installation efficiency in traditional solutions, and realizing efficient deployment and reliable monitoring of cable 8 well safety early warning.

[0036] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A safety early warning interface device for cable wells, characterized in that: It includes a housing (1), a puncture power extraction module (2), a temperature sensor (3), a current transformer (4), a signal processing circuit board (5), a network cable interface (6), and an early warning device; An insulating block (11) is connected to the bottom of the box (1), and a connector is provided on the insulating block (11). The insulating block (11) is detachably connected to the cable (8) through the connector. The puncture power extraction module (2), temperature sensor (3), signal processing circuit board (5) and network port are all located inside the box (1). The current transformer (4) is detachably connected to the insulating block (11). The puncture power extraction module (2), temperature sensor (3) and current transformer (4) are all electrically connected to the signal processing circuit board (5). The puncture power extraction module (2) penetrates the insulation layer of the box (1), the insulating block (11) and the cable (8) and pierces into the cable (8). The puncture power extraction module (2) is used to detect the voltage of the cable (8) and feed back the voltage signal to the signal processing circuit board (5). The detection end of the temperature sensor (3) passes through the housing (1) and the insulating block (11) and abuts against the surface of the cable (8). The temperature sensor (3) is used to detect the temperature of the cable (8) and feed back the temperature signal to the signal processing circuit board (5). The current transformer (4) is used to detect the current signal of the cable (8) and feed the current signal back to the signal processing circuit board (5); The signal processing circuit board (5) is used to transmit the processed voltage signal, temperature signal and current signal to the early warning device through the network cable interface (6).

2. The cable well safety early warning interface device according to claim 1, characterized in that: The puncture-power-harvesting module (2) includes a nut (21), a screw (22), and a power-harvesting steel needle (23); The bottom of the box (1) is provided with a clearance hole (15), and the insulating block (11) is provided with a mounting hole (16) corresponding to the clearance hole (15). The diameter of the clearance hole (15) is larger than the diameter of the mounting hole (16). The nut (21) is fixedly installed in the mounting hole (16). The power-taking steel needle (23) is fixedly inserted into the screw (22). The lower end of the power-taking steel needle (23) passes through the screw (22) and can be inserted into the cable (8). The screw (22) is threadedly connected to the nut (21). The upper end of the power-taking steel needle (23) is electrically connected to the signal processing circuit board (5).

3. The cable well safety early warning interface device according to claim 1, characterized in that: The temperature sensor (3) is a surface mount temperature sensor (3). The surface mount temperature sensor (3) includes a surface mount detection end (31) and a temperature signal output end (32). The surface mount detection end (31) passes through the housing (1) and the insulating block (11) in sequence and is fixedly connected to the bottom of the insulating block (11). The surface mount detection end (31) can abut against the surface of the cable (8). The temperature signal output end (32) is electrically connected to the signal processing circuit board (5).

4. The cable well safety early warning interface device according to claim 1, characterized in that: The current transformer (4) is an open-type current transformer (4) including a current detection center hole (41), and the current detection center hole (41) of the open-type current transformer (4) is wrapped around the cable (8).

5. The cable well safety early warning interface device according to claim 1, characterized in that: A connecting strip (42) is fixedly provided on the front side wall of the current transformer (4), and a buckle (43) is provided on the rear side wall of the connecting strip (42). A limiting seat (13) is provided on the front side wall of the insulating block (11). The limiting seat (13) has a hollow structure and an open upper end. A locking block (14) is fixedly provided in the limiting seat (13) corresponding to the buckle (43). The buckle (43) and the locking block (14) are engaged.

6. The cable well safety early warning interface device according to claim 1, characterized in that: The connector is a strip (7), and the insulating block (11) has two through holes (12), and the strip (7) is inserted into both through holes (12). The strip (7) is used to bind the insulating block (11) and the cable (8).

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