Live display grounding device

Abstract

The invention relates to a live display grounding device which comprises an induction type grounding ring, an induction type electroscope and a handheld terminal, the induction type grounding ring comprises a wire clamp, a wiring ring body and a wiring sensor, the wire clamp is fixed on one side of the wiring ring body, and the wire clamp is used for clamping a high-voltage cable; the induction type electroscope is fixedly arranged on the wiring ring body and induces and detects electrical parameters of a high-voltage cable, the wiring sensor is used for inducting whether a grounding wire is hung in the wiring ring body or not, and the handheld terminal is in wireless signal connection with the induction type electroscope and the wiring sensor. According to the invention, voltage and frequency measurement can be carried out on a high-voltage cable in a live-line state, whether a grounding wire on a grounding ring of the high-voltage cable needing power-off maintenance is hooked or not can be detected and confirmed, measured data can be remotely sent to the handheld terminal, and a worker can check the measured data through the handheld terminal in a safe area; the induction type grounding ring and the induction type electroscope cooperate with each other, so that the safety of related operation can be remarkably improved.

Description

Technical Field

[0001] The invention belongs to the field of intelligent contactless detection of high-voltage electric power equipment, and in particular relates to a live display grounding device. Background Art

[0002] With the rapid development of the power industry, the use of high-voltage power equipment is becoming more and more widespread. Special maintenance tools are required for the daily operation and inspection and maintenance of high-voltage cables. During the live operation of high-voltage cables, it is very necessary to understand whether important electrical parameters such as voltage and frequency are within the normal range. This is related to whether the high-voltage cables can operate stably and for a long time. In addition, in order to ensure the normal operation of high-voltage cables, regular power-off inspection and maintenance are also necessary. During power-off inspection and maintenance, in order to ensure safety, the high-voltage cable must be connected to the ground using a grounding ring and a grounding wire. After the inspection is completed, the grounding wire must be removed before power is supplied, otherwise safety accidents are prone to occur.

[0003] Since the voltage of high-voltage cables is extremely high, it is very dangerous to detect their electrical parameters such as voltage and frequency when they are energized. In addition, during power-off inspection and maintenance, although the operating procedures clearly require that the power should be turned off when the grounding wire is hung, and the grounding wire should be removed before power is turned on after inspection and maintenance, in actual operation, it is often difficult for on-site staff to timely understand the energized state of the high-voltage cable and whether the grounding wire is effectively hung or completely removed. Problems such as mistakenly hanging the grounding wire when it is energized and mistakenly sending power when the grounding wire is not removed still exist, that is, there are still great safety risks in the electrical parameter measurement and inspection and maintenance operations of high-voltage cables. Summary of the invention

[0004] The present invention provides a live display grounding device, aiming to solve the technical problem in the prior art that there are still great safety risks in the electrical parameter measurement and inspection and maintenance operations of high-voltage cables.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a live display grounding device, which includes an inductive grounding ring, an inductive tester and a handheld terminal, the inductive grounding ring includes a wire clamp, a wiring ring body and a wiring sensor, the wire clamp is fixed to one side of the wiring ring body, the wire clamp is used to clamp the high-voltage cable and make the wiring ring body and the high-voltage cable conductive, the inductive tester is also fixed on the wiring ring body and is used to sense and detect the electrical parameters of the high-voltage cable, the wiring sensor is connected to the wire clamp and is used to sense whether a grounding wire is hung in the wiring ring body, and the handheld terminal is connected to the inductive tester and the wiring sensor by wireless signals respectively.

[0006] On the basis of the above technical solution, the present invention can also make the following further technical improvements.

[0007] Furthermore, the wiring sensor is fixed on the wire clamp and is close to a side of the wiring ring body for hanging the ground wire.

[0008] Furthermore, the inductive electroscope and the wire clamp are arranged at a distance.

[0009] Furthermore, the inductive electroscope includes an electric field sensing module, a signal conditioning module, an analog-to-digital converter, a wireless communication module 1 and an electroscope main controller.

[0010] Furthermore, the handheld terminal includes a display module, a data storage module, a second wireless communication module, an Internet of Things module, a terminal main controller, a power module and an interactive button.

[0011] Furthermore, the data storage module uses an SD card to save data.

[0012] Furthermore, the wiring sensor includes an induction switch module, a wireless communication module 2 and a sensor main controller.

[0013] Furthermore, the inductive switch module includes a metal proximity switch or a mechanical pressure switch.

[0014] Furthermore, the induction switch includes a mechanical pressure switch, and the mechanical pressure switch is arranged on the metal exposed part of the wiring ring body for hanging the grounding wire.

[0015] Furthermore, the mechanical pressure switch includes a static contact, a moving contact, a pressure block and a reset spring. A mounting groove is provided at the exposed metal part, an insulating isolation plate is fixed on the groove wall of the mounting groove, the static contact is located at the bottom of the groove in the mounting groove, the moving contact is fixed to the bottom of the pressure block, the upper end of the pressure block extends out of the mounting groove, and the reset spring is arranged in the mounting groove. When the grounding wire is hung on the exposed metal part, the pressure block is pressurized to make the moving contact contact with the static contact. After the grounding wire is removed from the exposed metal part, the reset spring resets the pressure block.

[0016] Furthermore, the wiring sensor and the inductive electroscope are respectively provided with a wiring status indicator light and a power-on status indicator light.

[0017] Furthermore, it also includes a solar power supply module for supplying power to the wiring sensor and / or the inductive electroscope, and the solar power supply module includes a solar panel arranged on the housing of the inductive electroscope or the wiring sensor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The live display grounding device provided by the present invention includes an inductive grounding ring and an inductive tester, which can not only measure the voltage and frequency of a high-voltage cable in a live state, but also detect and confirm whether the grounding wire on the grounding ring of a high-voltage cable that needs to be powered off for maintenance is connected. The data obtained from the above measurements can be remotely sent to a handheld terminal, and the staff can view the corresponding data through the handheld terminal at a position relatively far away from the high-voltage cable. The inductive grounding ring and the inductive tester work together to significantly improve the safety of daily inspection and maintenance operations of the high-voltage cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An axonometric diagram of the live display grounding device provided by the present invention;

[0021] Figure 2 for Figure 1 The front view of the live display grounding device shown;

[0022] Figure 3 A schematic diagram of a live display grounding device provided by the present invention when a solar power supply module is provided (wiring sensor is not shown);

[0023] Figure 4 A schematic diagram of a handheld terminal of a live display grounding device provided by the present invention;

[0024] Figure 5 A schematic diagram of various modules included in the inductive electroscope of the live display grounding device provided by the present invention;

[0025] Figure 6 A schematic diagram of various modules included in a handheld terminal of a powered display grounding device provided by the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Inductive electrometer; 2. Handheld terminal; 3. Wire clamp; 4. Wiring ring body; 5. Wiring sensor; 6. High-voltage cable; 7. Electric field sensor module; 8. Signal conditioning module; 9. Analog-to-digital converter; 10. Wireless communication module 1; 11. Electrometer main controller; 12. Display module; 13. Data storage module; 14. Wireless communication module 2; 15. Internet of Things module; 16. Terminal main controller; 17. Power module; 18. Interactive button; 19. Solar panel. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] In the description of the present invention, if terms indicating orientation such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] like Figures 1 to 6 As shown, the present invention provides a live display grounding device, which includes an inductive grounding ring, an inductive electrometer 1 and a handheld terminal 2. The inductive grounding ring includes a wire clamp 3, a wiring ring body 4 and a wiring sensor 5. The wire clamp 3 is fixed to one side of the wiring ring body 4. The wire clamp 3 is used to clamp the high-voltage cable 6 and make the wiring ring body 4 conductive with the high-voltage cable 6. The inductive electrometer 1 is also fixed on the wiring ring body 4 and is used to sense and detect the electrical parameters of the high-voltage cable 6. The wiring sensor 5 is connected to the wire clamp 3 and is used to sense whether a grounding wire is hung in the wiring ring body 4. The handheld terminal 2 is connected to the inductive electrometer 1 and the wiring sensor 5 by wireless signals.

[0031] It should be noted that the live display grounding device provided by the present invention has at least the following two functions. One is to measure the electrical parameters such as voltage and frequency of the high-voltage cable in the live running state. At this time, the grounding ring body is not connected to the grounding wire. The voltage, frequency and other electrical parameters measured by the induction tester are remotely and wirelessly transmitted to a handheld terminal in a safe area far away from the high-voltage cable. The staff can complete the measurement of its voltage and frequency through the handheld terminal without touching or approaching the high-voltage cable, which has good safety.

[0032] When it is necessary to power off the high-voltage cable for inspection and maintenance, according to the safety operating procedures, after the power is off, the grounding wire must be hung on the grounding ring body first, and then the inspection is carried out. The power off is usually achieved by a switch in a remote control room. After the staff responsible for specific maintenance arrives at the site, they cannot know whether the high-voltage cable has been powered off by observing the high-voltage cable line. Even when the switch is turned off, the high-voltage cable is still energized due to some special reasons. At this time, if the staff directly hangs the grounding wire on the grounding ring body, it is very dangerous. At this time, the live display grounding device provided by the present invention does not have the above problem. The inductive grounding ring provided by the present invention can first be powered on by an inductive The tester measures the voltage of the high-voltage cable. Only when the measured voltage is zero or within the safe range can the grounding wire be connected, which effectively avoids the safety risk of live grounding wire connection. In addition, when the grounding wire is connected to the grounding ring body on the high-voltage cable, the grounding sensor will be triggered due to the metal proximity or mechanical pressing effect. The grounding sensor sends a signal to the handheld terminal that the grounding sensor has been triggered and maintained, indicating that the grounding wire has been effectively connected to the grounding ring body. The staff will only approach the high-voltage cable for detection after checking and confirming through the handheld terminal that the grounding ring has been effectively connected and the inductive tester has fed back that the high-voltage cable has been powered off. After the inspection is completed, the hanging wire should be removed from the grounding ring body before power is supplied. Before power is supplied, the staff can check and confirm whether there is any grounding wire that has not been removed through the handheld terminal. After confirming that all of them have been removed, the switch can be closed to supply power. It can be seen that the inductive tester provided by the present invention can effectively improve the safety of high-voltage cable inspection and maintenance.

[0033] In addition, the live display grounding device provided by the present invention can ensure that a data signal is given to the background (handheld terminal or a cloud platform connected to the handheld terminal signal, etc.) when the grounding wire is hung up and removed. The staff can know that the grounding ring in this area is working and capture the utilization rate of the grounding ring. The data accumulated over the years can then be used by the staff to analyze which areas are frequently inspected or prone to failures, which is convenient for assisting decision-making or proposing targeted solutions when establishing a project.

[0034] In one embodiment of the present invention, the wiring sensor 5 is fixed on the wire clamp 3 and is close to a side of the wiring ring body 4 for hanging the ground wire.

[0035] In one embodiment of the present invention, the inductive electroscope 1 and the wire clamp 3 are spaced apart.

[0036] In one embodiment of the present invention, the inductive electroscope 1 includes an electric field sensing module 7, a signal conditioning module 8, an analog-to-digital converter 9, a wireless communication module 10 and an electroscope main controller 11.

[0037] It should be noted that the electric field sensing module is used to sense the electric field signal in the surrounding environment, especially the high-voltage electric field. The electric field sensing module can accurately detect the change of the electric field and convert it into an electric signal. When the electric field sensing module is deployed near the high-voltage transmission line, it can sense the corresponding high-voltage electric signal of the same frequency and transmit it to the signal conditioning module. The signal conditioning module amplifies, filters and conditions the original electric signal from the electric field sensing module so that it can be subsequently processed and analyzed by the analog-to-digital conversion module. The analog-to-digital conversion module can perform digital-to-analog conversion on the electric signal processed by the signal conditioning module, and convert the analog electric signal into a digital electric signal that can be recognized and processed by the main controller of the electroscope. The wireless communication module 1 transmits the data such as the voltage and frequency of the high-voltage transmission line obtained after the analysis of the main controller of the electroscope to the handheld terminal by wireless means. The handheld terminal can also synchronously transmit the received data to the cloud platform for backup. As the core control unit of the inductive electroscope, the main controller of the electroscope is responsible for managing and coordinating the work of each module, processing the sensing signal, and sending the analyzed data to the handheld terminal through the wireless communication module 1.

[0038] In one embodiment of the present invention, the handheld terminal 2 includes a display module 12, a data storage module 13, a wireless communication module 2 14, an Internet of Things module 15, a terminal main controller 16, a power module 17 and an interactive button 18.

[0039] It should be noted that the display module is used as a human-machine interaction interface of the handheld terminal, and is used to display the detection data transmitted from the induction electroscope in real time. In addition, other functional interfaces can also be displayed: (1) data upload interface; (2) historical data interface; (3) personalized settings interface. The data storage module uses a storage medium (SD card) to save data, supports data reading and writing and long-term storage, and can store the detection data received from the induction electroscope, which is convenient for later data analysis and recording. The wireless communication module deployed on the handheld terminal realizes two-way data transmission through wireless communication technology (433MHz), can receive detection data from the induction electroscope, and send the processed data to the Internet of Things platform. The Internet of Things module uploads data to the cloud platform through the Internet of Things protocol (such as MQTT or HTTP), and supports remote access and control. The Internet of Things module connects the handheld terminal with the Internet of Things platform to realize remote monitoring, analysis and management of data. The handheld terminal main controller is the core control unit of the handheld terminal, which is responsible for data processing, display control and communication management. The power module is powered by a rechargeable battery, which supports long-term operation and multiple charging cycles. The power module provides the necessary power for each module of the handheld terminal to ensure its normal operation. The interactive button is used for the user to interact with the device.

[0040] In one embodiment of the present invention, the data storage module 13 uses an SD card to store data.

[0041] In one embodiment of the present invention, the wiring sensor 5 includes an inductive switch module, a wireless communication module 2 14 and a sensor main controller.

[0042] In one embodiment of the present invention, the induction switch module includes a metal proximity switch or a mechanical pressure switch.

[0043] In one embodiment of the present invention, the induction switch comprises a mechanical pressure switch, and the mechanical pressure switch is arranged on the metal exposed part of the wiring ring body 4 for hanging the ground wire.

[0044] In one embodiment of the present invention, the mechanical pressure switch includes a static contact, a moving contact, a pressure block and a reset spring. A mounting groove is provided at the exposed metal portion, an insulating isolation plate is fixed on the groove wall of the mounting groove, the static contact is located at the bottom of the groove in the mounting groove, the moving contact is fixed to the bottom of the pressure block, the upper end of the pressure block extends out of the mounting groove, the reset spring is arranged in the mounting groove, and when the grounding wire is hung on the exposed metal portion, the pressure block is pressurized to make the moving contact contact with the static contact. After the grounding wire is removed from the exposed metal portion, the reset spring resets the pressure block.

[0045] It should be noted that the mechanical pressure switch of the above structure is similar to the common automatic reset switch of those skilled in the art. When the hook of the grounding wire is hooked on the exposed metal part of the grounding ring body, the hook can press the switch to close it, so that the wiring sensor can obtain the corresponding electrical signal and the wiring sensor transmits the signal to the handheld terminal, so that the handheld terminal accurately knows the hooking status of the grounding wire on the grounding ring body. When the grounding wire hook on the grounding ring body is removed, the corresponding switch automatically resets and disconnects, and then the wiring sensor obtains another electrical signal and sends it to the handheld terminal.

[0046] In one embodiment of the present invention, the wiring sensor 5 and the inductive electroscope 1 are respectively provided with a wiring status indicator light and a power-on status indicator light.

[0047] It should be noted that after setting the wiring status indicator light and the power-on status indicator light, on-site staff can intuitively know whether the high-voltage cable is energized and whether the grounding wire is effectively connected, which is more direct and safer.

[0048] In one embodiment of the present invention, Figure 3As shown, it also includes a solar power supply module for supplying power to the wiring sensor 5 and / or the inductive electroscope 1 , and the solar power supply module includes a solar panel 19 arranged on the housing of the inductive electroscope 1 or the wiring sensor 5 .

[0049] It should be noted that the solar panel can convert solar energy into electrical energy and store it, thereby reducing the use of the power supply provided by the live display grounding device or extending its effective use time.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A live display grounding device, characterized in that: The invention comprises an inductive grounding ring, an inductive electrometer (1) and a handheld terminal (2). The inductive grounding ring comprises a wire clamp (3), a wiring ring body (4) and a wiring sensor (5). The wire clamp (3) is fixed to one side of the wiring ring body (4). The wire clamp (3) is used to clamp a high-voltage cable (6) and make the wiring ring body (4) and the high-voltage cable (6) conductive. The inductive electrometer (1) is also fixed to the wiring ring body (4) and is used to sense and detect the electrical parameters of the high-voltage cable (6). The wiring sensor (5) is connected to the wire clamp (3) and is used to sense whether a grounding wire is connected to the wiring ring body (4). The handheld terminal (2) is connected to the inductive electrometer (1) and the wiring sensor (5) respectively by wireless signals.

2. The live display grounding device according to claim 1, characterized in that: The wiring sensor (5) is fixed on the wire clamp (3) and is close to a side of the wiring ring body (4) for hanging a grounding wire.

3. The live display grounding device according to claim 1, characterized in that: The inductive electroscope (1) and the wire clamp (3) are arranged at a distance.

4. The live display grounding device according to claim 1, characterized in that: The inductive electroscope (1) comprises an electric field sensing module (7), a signal conditioning module (8), an analog-to-digital converter (9), a wireless communication module 1 (10) and an electroscope main controller (11).

5. The live display grounding device according to claim 1, characterized in that: The handheld terminal (2) comprises a display module (12), a data storage module (13), a wireless communication module 2 (14), an Internet of Things module (15), a terminal main controller (16), a power module (17) and an interactive button (18).

6. The live display grounding device according to claim 1, characterized in that: The wiring sensor (5) comprises an inductive switch module, a wireless communication module 2 (14) and a sensor main controller.

7. The live display grounding device according to claim 6, characterized in that: The induction switch module comprises a metal proximity switch or a mechanical pressure switch, and the mechanical pressure switch is arranged on the metal exposed part of the wiring ring body (4) for hanging the grounding wire.

8. The live display grounding device according to claim 7, characterized in that: The mechanical pressure switch includes a static contact, a moving contact, a pressure block and a reset spring. A mounting groove is provided at the exposed metal portion, an insulating isolation plate is fixed on the groove wall of the mounting groove, the static contact is located at the groove bottom in the mounting groove, the moving contact is fixed to the bottom of the pressure block, the upper end of the pressure block extends out of the mounting groove, the reset spring is arranged in the mounting groove, when the grounding wire is hung on the exposed metal portion, the pressure block is pressurized to make the moving contact contact with the static contact, and after the grounding wire is removed from the exposed metal portion, the reset spring resets the pressure block.

9. The live display grounding device according to claim 1, characterized in that: The wiring sensor (5) and the inductive tester (1) are respectively provided with a wiring status indication light and a power-on status indication light.

10. The live display grounding device according to any one of claims 1 to 9, characterized in that: It also comprises a solar power supply module for supplying power to the wiring sensor (5) and / or the inductive electroscope (1), wherein the solar power supply module comprises a solar panel (19) arranged on the housing of the inductive electroscope (1) or the wiring sensor (5).

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