Intelligent insulating cover for 10 kV line connection point

Abstract

The invention belongs to the technical field of high-voltage line connection, and particularly relates to an intelligent insulating cover for a 10kV line connection point. The device comprises a shell, the shell comprises a first shell body and a second shell body which are connected in a hinged mode, a first supporting plate and a second supporting plate are rotationally arranged at the bottom of the first shell body and the bottom of the second shell body respectively, and a bolt penetrates through the first supporting plate and the second supporting plate to connect the first shell body and the second shell body; a plurality of puncture blades are further installed in the shell, and temperature monitoring modules and pressure measuring modules are arranged in the first shell and the second shell. Through three innovations of a hinged structure, multi-sensor fusion and liquid metal sealing, the pain points of blind use, blind repair and blind replacement of a traditional product are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage line connection, and in particular relates to an intelligent insulating cover for a 10kV line connection point. Background Art

[0002] Currently, the operating status of distribution network lines lacks effective foresight and oversight. On-site inspections are often conducted only in the event of an abnormal outage. This lack of foresight leads to frequent, unpreventable burnouts of line equipment, resulting in unnecessary losses, power outages, and increased complaints. Furthermore, inspections are burdensome, wasting both manpower and material resources, and often leading to missed inspections and missed inspections. To ensure intelligent, safe, and reliable continuous operation of distribution network equipment, reduce the burden of inspections, and prevent abnormal outages, on-site investigations have revealed that most equipment failures are caused by aging terminal wires and contact points, leading to poor contact. This causes frequent sparking at the equipment contacts, resulting in a rapid increase in temperature and consequently, line burns. Temperature rise is a long process, and if not accurately identified and detected early on, degradation can rapidly accelerate, leading to line failures.

[0003] Therefore, the contact point is a crucial node in a 10kV line, requiring it to be sturdy, reliable, and have good contact. The stability of the contact point plays a crucial role in the safe operation of the line. During operation, the contact point is affected by temperature, causing thermal expansion and contraction. Rain and snow can accelerate oxidation. Strong winds can loosen the contact, and unpredictable external forces can cause deformation. These factors can make the contact point unreliable, increase its resistance, and generate heat during operation, significantly increasing potential operational risks.

[0004] Measuring and collecting various physical parameters at each connection point, such as temperature and contact pressure, is crucial. Various factors contributing to natural aging will ultimately manifest themselves in temperature changes at the connection clamp, which is a comprehensive reflection of these parameters. Therefore, temperature testing of the connection clamp is the most direct way to determine if a connection point is functioning properly.

[0005] Currently, high-voltage conductor insulation covers are used to prevent exposed conductors from contacting external poles, trees, animals, and other sources, potentially causing short circuits or discharges. They also provide contact isolation for maintenance personnel, ensuring safe distances. However, traditional insulation covers only provide physical isolation and are unable to monitor the status of connection points in real time. Fault detection relies on manual inspections or post-fault tripping, resulting in a delayed response. Therefore, the present invention aims to provide an intelligent insulation cover capable of real-time monitoring of conductor pressure and temperature. Summary of the Invention

[0006] In view of this, the present invention proposes an intelligent insulation cover for a 10kV line connection point.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: An intelligent insulating cover for a 10kV line connection point includes a housing comprising a first shell and a second shell that are hingedly connected. A first support plate and a second support plate are rotatably mounted on the bottoms of the first shell and the second shell, respectively. Bolts penetrate the first and second support plates to connect the first and second shells. A plurality of puncture blades are also mounted within the housing. A temperature monitoring module and a pressure measurement module are both mounted within the first and second shells. The pressure measurement module includes a groove opened at the root of the puncture blade, and a piezoelectric ceramic piece is bonded and fixed in the groove; a first channel is opened on the puncture blade above the groove, and a tungsten alloy cone block is added in the first channel, and the top and bottom ends of the tungsten alloy cone block are respectively in contact with the wire and the piezoelectric ceramic piece.

[0008] Furthermore, the first shell includes two longitudinally fixed semi-arc plates, the second shell has the same structure as the first shell, and the puncture blades are installed on the semi-arc plates; the top end of the second shell is rotatably connected to the first shell through a rotating shaft.

[0009] Furthermore, the first support plate and the second support plate are respectively provided with a plurality of first screw holes and second screw holes; the bolts are sequentially passed through the first screw holes and the second screw holes to connect the first support plate and the second support plate; a limiting block is fixed at the end of the bolt, and a nut is also installed on the side of the bolt close to the limiting block.

[0010] Furthermore, a conductive core rod is provided on the first shell at a middle position between the two semi-arc plates, and the conductive core rod is connected to the plurality of puncture blades on the first shell.

[0011] Furthermore, the groove and the first channel are filled with liquid metal to ensure both electrical conductivity and pressure transmission.

[0012] Furthermore, the temperature monitoring module includes a copper alloy base and a temperature sensor, the copper alloy base is arranged between the puncture blade and the shell, a second channel is opened on the copper alloy base, the temperature sensor is embedded in the second channel, and the second channel is filled with thermal grease.

[0013] Furthermore, a control cavity is provided on the outside of the shell, and the temperature sensor and the piezoelectric ceramic piece are both connected to the controller in the control cavity; a buzzer and a display light are respectively provided on the outside of the first shell and the outside of the second shell, and the display light and the buzzer are also connected to the controller.

[0014] Furthermore, the inner surfaces of the first shell and the second shell are both provided with oblique anti-slip teeth.

[0015] Compared with the prior art, the present invention has the following beneficial effects: It can be quickly installed and maintained. The first and second shells are hinged by a rotating shaft and fixed with bolts on the bottom support plate to achieve "open-close" installation. Maintenance can be completed without removing the wires, while traditional insulation covers need to be completely disassembled. This application adopts a sheathed split structure, dividing the insulation cover into left and right halves, fully covering the conductors 360°, increasing the rotation resistance by more than 3 times, and can be quickly opened and closed during maintenance without disassembly; and the symmetrical design of the double shell evenly distributes mechanical stress to avoid deformation under pressure on one side; It can monitor multiple parameters in real time. A piezoelectric ceramic piece is embedded in the groove at the root of the puncture blade, and the pressure of the wire is transmitted through the tungsten alloy cone to accurately identify the risk of loosening. The copper alloy base is embedded with a temperature sensor and filled with thermal grease to ensure a thermal response time of less than 15 seconds. In addition, the groove and the first channel are filled with liquid metal alloy, which has both electrical conductivity and pressure transmission efficiency, and the contact resistance is less than 5μΩ, solving the signal attenuation problem caused by traditional rubber seals. The control chamber integrates a controller, which realizes sound and light alarm through display lights and buzzers. For example, a red light + buzzer prompts when the temperature is greater than 85℃ or the pressure is less than 300N. It supports LoRa wireless transmission to the operation and maintenance platform.

[0016] The intelligent insulation cover described in this invention addresses the pain points of traditional products, including blind use, blind repair, and blind replacement, through its innovative articulated structure, multi-sensor fusion, and liquid metal sealing. Its technological value lies not only in its functional upgrades but also in promoting the transformation of distribution network operation and maintenance from passive repair to proactive prevention and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of the present invention Figure 1 (Closed state).

[0018] Figure 2 This is an overall schematic diagram of the present invention Figure 2 (Open state).

[0019] Figure 3 It is a left side schematic diagram of the present invention.

[0020] Figure 4 It is an enlarged schematic diagram of the temperature monitoring module A of the present invention.

[0021] Figure 5 It is an enlarged schematic diagram of the pressure measurement module B of the present invention.

[0022] Figure 6 It is an overall schematic diagram of the present invention (after connecting the wires).

[0023] The attached figures indicate: 1: first shell, 2: second shell, 3: semi-arc plate, 4: puncture blade, 5: rotating shaft, 6: first support plate, 7: second support plate, 8: first screw hole, 9: second screw hole, 10: conductive core rod, 11: piezoelectric ceramic sheet, 12: groove, 13: tungsten alloy cone block, 14: liquid metal, 15: copper alloy base, 16: temperature sensor, 17: first channel, 18: second channel, 19: thermal grease, 20: control chamber, 21: display light, 22: buzzer, 23: oblique anti-slip tooth pattern, 24: limit block, 25: nut, 26: wire. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0026] It should be noted that in this application, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0027] Example like Figure 1-6 As shown, this embodiment discloses an intelligent insulation cover for a 10kV line connection point. It integrates temperature and conductor pressure detection, monitors the connection point's operating status in real time, and issues an alarm via wireless transmission for abnormal heating or loosening. The cover comprises a housing comprising a first shell 1 and a second shell 2, which are hingedly connected. The first shell 1 comprises two longitudinally fixed semi-arc plates 3; each of the semi-arc plates 3 is mounted with a puncture blade 4. The second shell 2 has the same structure as the first shell 1 and is also equipped with a puncture blade 4. The top end of the second shell 2 is rotatably connected to the first shell 1 via a rotating shaft 5.

[0028] The bottom of the first shell 1 and the second shell 2 are rotatably provided with a first support plate 6 and a second support plate 7, respectively. The first support plate 6 and the second support plate 7 are respectively provided with a plurality of first screw holes 8 and a second screw hole 9. Bolts are passed through the first support plate 6 and the second support plate 7 to connect the first shell 1 and the second shell 2. Specifically, bolts are passed through the first screw hole 8 and the second screw hole 9 in sequence to connect the first support plate 6 and the second support plate 7. In addition, in order to enhance the stability of the bolt connection and ensure that the insulating cover is close to the wire or equipment to prevent it from falling off, a limit block 24 is fixed at the end of the bolt, and a nut 25 is also installed on the side of the bolt close to the limit block.

[0029] A conductive core rod 10 is provided on the first shell 1 at the middle position of the two semi-arc plates 3. The conductive core rod 10 is connected to the multiple puncture blades 4 on the first shell 1, so that the wires located in the upper semi-arc plate 3 can be connected to the wires located in the lower semi-arc plate 3 through the puncture blades 4 and the conductive core rod 10 in sequence.

[0030] A temperature monitoring module and a pressure measuring module are provided in both the first shell 1 and the second shell 2 .

[0031] The pressure measurement module includes a groove 12 at the base of the puncture blade 4, into which a piezoelectric ceramic disc 11 is bonded. A first channel 17 is defined above the groove 12 on the puncture blade 4. A tungsten alloy cone 13 is positioned within this channel, with the top and bottom ends of the cone 13 contacting the wire and the piezoelectric ceramic disc 11, respectively. Both the groove 12 and the first channel 17 are filled with liquid metal 14 to ensure both electrical conductivity and pressure transmission.

[0032] The temperature monitoring module includes a copper alloy base 15 and a temperature sensor 16. The copper alloy base 15 is arranged between the puncture blade 4 and the shell. A second channel 18 is opened on the copper alloy base 15. The temperature sensor 16 is embedded in the second channel 18, and the second channel 18 is filled with thermal grease 19.

[0033] A sealed control chamber 20 is provided on the outside of the housing. The temperature sensor 16 and the piezoelectric ceramic disc 11 are both connected to a controller within the control chamber 20. For ease of maintenance, an inspection cover can be provided on the outside of the control chamber 20, secured to the outside of the control chamber 20 by bolts. A buzzer 22 and a display light 21 are provided on the outside of the first housing 1 and the outside of the second housing 2, respectively. The display light 21 and buzzer 22 are also connected to the controller.

[0034] The inner surfaces of the first shell 1 and the second shell 2 are both provided with oblique anti-slip teeth 23 for increasing the contact friction between the wires and the inner side surfaces of the shells to prevent the wires from being displaced or falling off.

[0035] The "wire installation" steps of the intelligent insulation cover for a 10kV line connection point of the present invention include: Step 1: Place two wires 26 in the cavity formed by the upper semi-arc plate 3 of the first shell 1 and the upper semi-arc plate 3 of the second shell 2, and in the cavity formed by the lower semi-arc plate 3 of the first shell 1 and the lower semi-arc plate 3 of the second shell 2, respectively. Step 2: Hold the support plate with your hand wearing an insulating glove and use an electric wrench to rotate the bolts, so that the first support plate 6 and the second support plate 7 are close to each other, thereby driving the first shell 1 and the second shell 2 to move closer. The semi-arc plates 3 on both sides of the two wires can clamp the corresponding wires, and the puncture blades 4 located in the upper semi-arc plate 3 and the lower semi-arc plate 3 puncture the upper and lower wires. At this time, the upper and lower wires are connected through the puncture blades 4 and the conductive core rod 10; Step 3: Tighten the nut on the side of the limit block on the bolt so that the first support plate 6 and the second support plate 7 are in close contact and not prone to loosening.

[0036] The temperature monitoring and pressure measurement steps of the intelligent insulation cover for a 10kV line connection point of the present invention include: Step 1: After the wire is installed and starts working, the wire temperature is transmitted to the temperature sensor 16 in sequence through the puncture blade 4, the copper alloy base 15, and the conductive silicone grease. In this embodiment, the temperature sensor 16 can be a PT1000 temperature sensor 16; the temperature sensor 16 transmits the temperature data to the controller in the control chamber 20 via the I2C bus at a frequency of 10 Hz, wherein the controller can be an STM32H743; Step 2: The wire pressure is transmitted to the piezoelectric ceramic piece 11 through the tungsten alloy cone 13 set on the puncture blade 4, where the liquid metal 14Ga-In-Sn alloy fills the groove 12, ensuring a pressure transmission efficiency greater than 90%; the piezoelectric ceramic output charge signal is collected by the controller; Step 3: The controller performs temperature-pressure correlation analysis. When the temperature is greater than 85°C or the pressure is less than 300N, the display light 21 and the buzzer 22 are triggered. At this time, the display light 21 turns red and the buzzer 22 emits an alarm signal. Step 4: The controller packages the temperature, pressure values, and device ID into JSON format and transmits the values ​​to the data access layer of the power distribution IoT platform through LoRa technology and the MQTT protocol. At the application layer of the power distribution IoT platform, the Baidu Map API marks the location of the abnormal insulation cover, and the IoT platform automatically generates a maintenance work order and pushes it to the operation and maintenance app.

[0037] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An intelligent insulation cover for a 10kV line connection point, characterized in that: The device comprises a housing, the housing comprising a first shell and a second shell that are hingedly connected, a first support plate and a second support plate being rotatably provided at the bottom of the first shell and the second shell, respectively, and a bolt passing through the first support plate and the second support plate to connect the first shell and the second shell; a plurality of puncture blades are further installed in the housing, and a temperature monitoring module and a pressure measurement module are both provided in the first shell and the second shell; Among them, the pressure measurement module includes a groove opened at the root of the puncture blade, and a piezoelectric ceramic piece is bonded and fixed in the groove; a first channel is opened on the puncture blade above the groove, and a tungsten alloy cone block is added in the first channel, and the top and bottom ends of the tungsten alloy cone block are respectively in contact with the wire and the piezoelectric ceramic piece.

2. The intelligent insulating cover for a 10kV line connection point according to claim 1, characterized in that: The first shell includes two longitudinally fixed semi-arc plates. The second shell has the same structure as the first shell. The puncture blades are installed on the semi-arc plates. The top end of the second shell is rotatably connected to the first shell via a rotating shaft.

3. The intelligent insulation cover for a 10kV line connection point according to claim 2, characterized in that: The first support plate and the second support plate are respectively provided with a plurality of first screw holes and a second screw hole; bolts are sequentially passed through the first screw holes and the second screw holes to connect the first support plate and the second support plate; a limiting block is fixed at the end of the bolt, and a nut is also installed on the side of the bolt close to the limiting block.

4. The intelligent insulation cover for a 10kV line connection point according to claim 3, characterized in that: A conductive core rod is provided on the first shell at a middle position between the two semi-arc plates, and the conductive core rod is connected to the plurality of puncture blades on the first shell.

5. The intelligent insulating cover for a 10kV line connection point according to claim 4, characterized in that: The groove and the first channel are both filled with liquid metal to ensure both electrical conductivity and pressure transmission.

6. The intelligent insulation cover for a 10kV line connection point according to claim 5, characterized in that: The temperature monitoring module includes a copper alloy base and a temperature sensor. The copper alloy base is arranged between the puncture blade and the shell. A second channel is opened on the copper alloy base. The temperature sensor is embedded in the second channel, and the second channel is filled with thermal grease.

7. The intelligent insulating cover for a 10kV line connection point according to claim 6, characterized in that: A control cavity is provided on the outside of the shell, and the temperature sensor and the piezoelectric ceramic piece are both connected to the controller in the control cavity; a buzzer and a display light are respectively provided on the outside of the first shell and the outside of the second shell, and the display light and the buzzer are also connected to the controller.

8. The intelligent insulation cover for a 10kV line connection point according to claim 7, characterized in that: The inner surfaces of the first shell and the second shell are both provided with oblique anti-slip teeth.

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