Cable traveling wave reflection type fault location and temperature rise early warning device

Abstract

The utility model relates to cable wave reflection type fault location and temperature rise early warning device, including upper arc plate, lower arc plate, the monitor that sets up in the upper arc plate outside, the buzzer that sets up on the monitor, warning light and charging port, upper arc plate and lower arc plate are opposite setting, the lower end of monitor is evenly provided with several groups of sharp conductive body, sharp conductive body passes through the outside of upper arc plate and extends to its inside, the inside integrated sensor for gathering wave signal and temperature signal of monitor, the processor for handling signal and executing fault location and temperature rise early warning algorithm, and wireless communication module for communicating with remote monitoring center, through the integrated structure design, successfully with signal extraction, condition monitoring, intelligent analysis and on -the -spot alarm function integration in a compact unit, its innovative " puncture formula " electric connection and multiple protection design, while ensuring high -quality extraction of high frequency signal, realizes convenient installation and high reliability under the harsh environment.

Description

Technical Field

[0001] This utility model relates to the field of early warning device technology, and in particular to a cable traveling wave reflection type fault location and temperature rise early warning device. Background Technology

[0002] Currently, cable lines widely used in industries such as coal mining and power often face problems such as difficulty in fault location, insulation aging, and local overheating due to factors such as long distances, complex environments, and large load variations. Existing online monitoring technologies mostly focus on monitoring single parameters (such as current, voltage, and partial discharge), and fault location often relies on impedance methods or traveling wave methods. However, the location accuracy is easily affected by factors such as the difficulty in waveform recognition and the uncertainty of wave velocity. At the same time, abnormal temperature rise caused by long-term overload or poor contact of the cable often fails to be effectively linked with fault location, making it impossible to achieve early warning.

[0003] In existing technologies, although traveling wave reflection can be used for fault location, it usually needs to be triggered after the fault occurs, and it has high requirements for signal acquisition and processing equipment, which is expensive. While distributed fiber optic temperature measurement and other technologies can monitor temperature, it is difficult to directly correlate them with the precise location of the fault point.

[0004] Therefore, there is an urgent need for an integrated device that can combine pre-fault temperature rise early warning with accurate post-fault location to achieve full-process monitoring of cable status. Utility Model Content

[0005] The technical problem to be solved by this utility model is that existing cable traveling wave reflection fault location and temperature rise early warning devices are usually complicated to install, susceptible to interference, and have insufficient early warning capabilities.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cable traveling wave reflection type fault location and temperature rise early warning device includes an upper arc plate, a lower arc plate, a monitor located on the outside of the upper arc plate, a buzzer, a warning light, and a charging port on the monitor. The upper and lower arc plates are arranged opposite to each other. Several sets of sharp conductors are evenly distributed at the lower end of the monitor. The sharp conductors extend through the outside of the upper arc plate to its inside. The sharp conductors are used to pierce the cable outer sheath and electrically connect with the cable shielding layer. The sharp conductors are electrically connected to the monitor. The upper and lower arc plates... The inner sides are all fitted with protective layers. On the inner side of the upper arc plate, a sealing gasket is fitted on the protective layer at the position corresponding to the sharp conductor. The sharp conductor passes through the protective layer and the sealing gasket. The buzzer and warning light are fixedly installed on the upper end of the monitor. Four sets of warning lights are evenly distributed around the buzzer. The buzzer and warning light are used to provide audible and visual alarms in conjunction when the cable is abnormal. The monitor integrates sensors for collecting traveling wave signals and temperature signals, a processor for processing signals and executing fault location and temperature rise early warning algorithms, and a wireless communication module for communicating with a remote monitoring center.

[0007] The beneficial effects of this utility model are as follows: Through integrated structural design, signal extraction, status monitoring, intelligent analysis, and on-site alarm functions are successfully integrated into a compact unit. Its innovative "piercing" electrical connection and multiple protection design ensure high-quality extraction of high-frequency signals while achieving convenient installation and high reliability in harsh environments. It effectively solves the problems of complex installation, susceptibility to interference, and insufficient early warning in traditional solutions. Through the clamping structure of the upper and lower arc plates, the device can be quickly installed and firmly fixed, effectively resisting downhole vibration. The use of a sharp conductor to directly pierce the cable outer sheath and shielding layer eliminates the complicated wire stripping steps, avoids cable damage caused by improper operation, and establishes a low-impedance, high-bandwidth signal channel, laying a physical foundation for accurate traveling wave fault location.

[0008] Furthermore, two sets of first mounting holes are symmetrically provided on the ear plates of both the upper and lower arc plates. The upper and lower arc plates are detachably connected by bolts and nuts that fit into the first mounting holes on their ear plates.

[0009] Furthermore, the top of the monitor is equipped with a transparent protective cover, which is used to cover the buzzer, warning light and charging mask.

[0010] Furthermore, a mounting frame is fixedly connected to the lower end of the transparent protective cover, and second mounting holes are provided at the four corners of the mounting frame. A third mounting hole matching the second mounting hole is provided on the monitor.

[0011] Furthermore, the mounting frame is fixed by bolts passing through the second and third mounting holes. The surface of the transparent protective cover is evenly distributed with inclined micro-holes, the openings of which are inclined downwards.

[0012] Furthermore, the micropores on the transparent protective cover allow sound to pass through, and the transparent protective cover is a high-transmittance polycarbonate cover.

[0013] Furthermore, the protective layer is made of elastic rubber, and the sealing gasket is made of flexible sealing material.

[0014] Furthermore, the sharp conductor is made of beryllium copper alloy.

[0015] The beneficial effects of adopting the above-mentioned further solutions are as follows: the protective layer set on the inner side of the upper and lower arc plates effectively prevents hard scratches or pressure damage to the cable body during clamping; the sealing gasket forms the first seal around the piercing point of the sharp conductor, preventing moisture from entering the cable interior and connection points; the transparent protective cover is fixed to the monitor through the mounting frame, the second mounting hole and the third mounting hole, providing comprehensive protection for the buzzer, warning light and charging port, and the inclined micro-holes on its surface ensure sound transmission while also providing water resistance; the buzzer and the four sets of warning lights evenly distributed around it work together to produce a strong audible and visual alarm effect, making it easy for on-site personnel to quickly detect and locate abnormal cables in complex environments; the sensors, processor and wireless communication module integrated inside the monitor enable the device to have independent signal acquisition, intelligent analysis (fault location and temperature rise early warning) and data remote transmission capabilities, forming a complete edge computing node. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the upper arc-shaped plate structure of this utility model; Figure 4 This is a schematic diagram of the monitor structure of this utility model; Figure 5 This is a schematic diagram of the transparent protective cover structure of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Upper arc plate; 2. Lower arc plate; 3. Monitor; 4. Protective layer; 5. Sharp conductor; 6. Sealing gasket; 7. Buzzer; 8. Warning light; 9. Transparent protective cover; 10. Mounting frame; 11. Charging port; 12. First mounting hole; 13. Second mounting hole; 14. Third mounting hole. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 application 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 on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0020] like Figures 1-5 As shown, the cable traveling wave reflection type fault location and temperature rise early warning device includes an upper arc plate 1, a lower arc plate 2, a monitor 3 located on the outside of the upper arc plate 1, a buzzer 7, a warning light 8, and a charging port 11 located on the monitor 3. The upper arc plate 1 and the lower arc plate 2 are arranged opposite each other. Several sets of sharp conductors 5 are evenly distributed at the lower end of the monitor 3. The sharp conductors 5 extend through the outside of the upper arc plate 1 to its inside. The sharp conductors 5 are used to pierce the cable outer sheath and electrically connect with the cable shielding layer. The sharp conductors 5 are electrically connected to the monitor 3. The inner sides of both the upper arc plate 1 and the lower arc plate 2 are fitted with... The protective layer 4, on the inner side of the upper arc plate 1, has a sealing gasket 6 attached to the position corresponding to the sharp conductor 5. The sharp conductor 5 passes through the protective layer 4 and the sealing gasket 6. The buzzer 7 and the warning light 8 are both fixedly installed on the upper end of the monitor 3. Four sets of warning lights 8 are evenly distributed around the buzzer 7. The buzzer 7 and the warning light 8 are used to coordinate the sound and light alarm when the cable is abnormal. The monitor 3 integrates a sensor for collecting traveling wave signals and temperature signals, a processor for processing signals and executing fault location and temperature rise early warning algorithms, and a wireless communication module for communicating with a remote monitoring center.

[0021] like Figures 2-4 As shown, the upper end of the monitor 3 is provided with a transparent protective cover 9, which is used to cover the buzzer 7, the warning light 8 and the charging port 11. The lower end of the transparent protective cover 9 is fixedly connected to the mounting frame 10. The four corners of the mounting frame 10 are provided with second mounting holes 13. The monitor 3 is provided with a third mounting hole 14 that matches the second mounting hole 13. The mounting frame 10 is fixed by bolts passing through the second mounting hole 13 and the third mounting hole 14. The surface of the transparent protective cover 9 is evenly distributed with inclined micro-holes. The micro-hole openings are inclined downwards. The micro-holes on the transparent protective cover 9 are used for sound transmission. The transparent protective cover 9 is a high light transmittance polycarbonate cover.

[0022] like Figures 1-2 As shown, the protective layer 4 is made of elastic rubber, the sealing gasket 6 is made of flexible sealing material, and the sharp conductor 5 is made of beryllium copper alloy.

[0023] Working principle: First, the upper arc plate 1 and the lower arc plate 2 are fastened onto the cable to be monitored, and the lugs at both ends of the upper arc plate 1 and the lower arc plate 2 are fixed with bolts and nuts. The bolts are passed through the first mounting hole 12 and fixed with nuts to apply a tightening force. During this process, the sharp conductive body 5 on the inner side of the upper arc plate 1 pierces the outer sheath of the cable under pressure and establishes a reliable electrical connection with the metal shielding layer of the cable. At the same time, the sealing gasket 6 is tightly compressed on the surface of the cable to form a waterproof seal. Then, the device is connected to the power supply through the charging port 11 and starts to work. The sharp conductor 5 captures the high-frequency current traveling wave signal of the cable in real time and transmits it to the monitor 3. At the same time, the temperature sensor integrated inside the monitor 3 monitors the surface temperature of the cable indirectly. Next, the processor inside monitor 3 performs high-speed analysis on the acquired traveling wave signal, accurately calculates the distance to the fault point using the traveling wave reflection principle, and performs real-time tracking and trend analysis on the temperature data, and executes the temperature rise early warning algorithm. Finally, when the processor determines that a cable fault has occurred or detects an abnormal temperature rise, it will immediately trigger an alarm. On the one hand, it drives the buzzer 7 to emit an alarm sound and illuminates four sets of warning lights 8. The sound and light propagate outward through the transparent protective cover 9 with micro-perforations, realizing local sound and light alarm. On the other hand, it uploads detailed information such as fault type, location, and temperature to the remote monitoring center through the internal wireless communication module to complete remote early warning.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cable traveling wave reflection type fault location and temperature rise early warning device, characterized in that, Includes an upper arc plate (1), a lower arc plate (2), a monitor (3) located on the outside of the upper arc plate (1), a buzzer (7), a warning light (8), and a charging port (11) located on the monitor (3). The upper arc plate (1) and the lower arc plate (2) are arranged opposite to each other. Several sets of sharp conductors (5) are evenly distributed at the lower end of the monitor (3). The sharp conductors (5) extend through the outside of the upper arc plate (1) to its inside. The sharp conductors (5) are used to pierce the outer sheath of the cable and are electrically connected to the cable shielding layer. The sharp conductors (5) are electrically connected to the monitor (3). The inner sides of both the upper arc plate (1) and the lower arc plate (2) are fitted with a protective layer (4). A sealing gasket (6) is attached to the protective layer (4) on the inner side of the arc plate (1) at the position corresponding to the sharp conductor (5). The sharp conductor (5) passes through the protective layer (4) and the sealing gasket (6). The buzzer (7) and the warning light (8) are both fixedly installed on the upper end of the monitor (3). Four sets of warning lights (8) are evenly distributed around the buzzer (7). The buzzer (7) and the warning light (8) are used to coordinate sound and light alarm when the cable is abnormal. The monitor (3) integrates a sensor for collecting traveling wave signals and temperature signals, a processor for processing signals and executing fault location and temperature rise early warning algorithms, and a wireless communication module for communicating with the remote monitoring center.

2. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 1, characterized in that, The upper arc plate (1) and the lower arc plate (2) are symmetrically provided with two sets of first mounting holes (12). The upper arc plate (1) and the lower arc plate (2) are detachably connected by bolts and nuts in conjunction with the first mounting holes (12) on their ear plates.

3. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 1, characterized in that, The monitor (3) has a transparent protective cover (9) at the top, which is used to cover the buzzer (7), warning light (8) and charging port (11).

4. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 3, characterized in that, The lower end of the transparent protective cover (9) is fixedly connected to the mounting frame (10), and the four corners of the mounting frame (10) are provided with second mounting holes (13). The monitor (3) is provided with a third mounting hole (14) that matches the second mounting hole (13).

5. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 4, characterized in that, The mounting frame (10) is fixed by bolts passing through the second mounting hole (13) and the third mounting hole (14). The surface of the transparent protective cover (9) is evenly distributed with inclined micro-holes, and the micro-hole openings are inclined downwards.

6. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 5, characterized in that, The micropores on the transparent protective cover (9) are used for sound transmission. The transparent protective cover (9) is a high-transmittance polycarbonate cover.

7. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 1, characterized in that, The protective layer (4) is made of elastic rubber, and the sealing gasket (6) is made of flexible sealing material.

8. The cable traveling wave reflection type fault location and temperature rise early warning device according to claim 1, characterized in that, The sharp conductor (5) is made of beryllium copper alloy.

Images