Anti-electric shock alarm grounding device used in distribution network operation and robbery

Abstract

The invention provides an anti-electric shock alarm grounding device for a distribution network operation gun. The anti-electric shock alarm grounding device comprises a closed shell, an insulating joint, a knob switch and an alarm are arranged outside the shell; an electromagnetic inductor and a controller are arranged in the shell; the insulating joint is connected with the insulating rod and is driven by the insulating rod to drive the shell to move; when the knob switch is rotated to a corresponding position corresponding to a certain voltage level, an electric signal with a corresponding level value is generated and sent to the controller; the electromagnetic inductor generates induced electromotive force and sends the induced electromotive force to the controller The controller determines a to-be-compared current voltage threshold value based on a level value of an electric signal generated by the knob switch, and generates a first alarm signal when the induced electromotive force is greater than or equal to the current voltage threshold value through comparison; the alarm gives an alarm when receiving the first alarm signal. By implementing the anti-electric-shock alarm grounding device, the problems that an existing anti-electric-shock alarm grounding device is single in applicable voltage grade and detection requirement specification and too large in size and weight can be solved, and the anti-electric-shock alarm grounding device has certain portability.

Description

Technical Field

[0001] The invention relates to the technical field of power systems, and in particular to an anti-electric shock alarm grounding device used in distribution network operation. Background Art

[0002] In the distribution network operation and rescue work, operators usually rely on visual inspection to determine the safe distance. However, the distribution network operation environment is relatively complex, and operators may cause electric shock casualties due to subjective and objective factors such as carelessness, bad weather and equipment leakage. In addition, when the tower collapses or there is a heavy rain, once a single-phase fault grounding occurs in the distribution line, it is also easy to cause electric shock to people. Therefore, timely detection of line and equipment leakage defects so as to take preventive measures can greatly improve work safety and reduce the risk of electric shock.

[0003] In order to effectively avoid or reduce the occurrence of electric shock accidents, the use of anti-electric shock alarm grounding devices has become an important technical means. At present, the existing anti-electric shock alarm grounding devices can monitor the current changes of the distribution network in real time. Once an abnormal current is detected, the alarm is immediately activated and the power supply is cut off, thereby effectively preventing the occurrence of electric shock accidents. However, the applicable voltage level specifications and detection requirements of the anti-electric shock alarm grounding device are relatively simple. In addition, the size and weight of the anti-electric shock alarm grounding device are too large, so it cannot meet the convenience of daily work. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide an anti-electric shock alarm grounding device for use in distribution network operation, which can solve the problems of the existing anti-electric shock alarm grounding devices having a single applicable voltage level and detection requirement specifications and being too large in size and weight, and has a certain degree of portability.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an anti-electric shock alarm grounding device for distribution network operation, comprising a closed shell; an insulating joint for connecting an insulating rod, a knob switch for matching multiple voltage levels and an alarm are arranged outside the shell; an electromagnetic inductor and a controller are installed inside the shell; wherein,

[0006] The insulating joint is connected to the insulating rod and driven by the insulating rod to drive the housing to move toward or away from the device to be tested;

[0007] The knob switch is connected to the controller, and when it is rotated to a corresponding position corresponding to a certain voltage level, it generates an electrical signal of a corresponding level value and sends it to the controller; wherein the level values ​​of the electrical signal generated by the knob switch when it is rotated are all different;

[0008] The electromagnetic inductor is connected to the controller and is used to sense the change of magnetic flux in real time to generate an induced electromotive force when the shell is driven to move, and send the induced electromotive force to the controller;

[0009] The controller is connected to the alarm device, and is used to determine the current voltage threshold to be compared based on the level value of the electric signal generated by the position of the knob switch after being rotated, and compare the received induced electromotive force with the current voltage threshold, and generate a first alarm signal when the induced electromotive force is greater than or equal to the current voltage threshold.

[0010] The alarm is used to sound an alarm when receiving the first alarm signal generated by the controller.

[0011] Wherein, the alarm includes a buzzer and two LED indicator lights.

[0012] Wherein, the insulating joint, the knob switch and the alarm are all arranged on the back side of the shell; wherein, the back side of the shell is the side thereof facing the ground.

[0013] A battery compartment and a battery compartment cover for installing a power supply battery are also provided outside the shell; wherein the battery compartment is a groove arranged on the back side of the shell; and the battery compartment cover is arranged on the battery compartment.

[0014] A low-battery indicator light for displaying a low-battery alarm is also provided outside the shell; the low-battery indicator light is arranged on the back of the shell and is connected to the controller, and is used to light up and flash when receiving a second alarm signal generated by the controller detecting that the internal voltage value of the power supply battery is less than a predetermined lower limit value.

[0015] Wherein, a lighting switch and a lighting LED lamp are also provided outside the housing; Wherein,

[0016] The lighting LED lamp is arranged on the front side of the shell and connected to the power supply battery; wherein the front side of the shell is the side facing the sky;

[0017] The lighting switch is arranged on the back side of the housing and is located on the wire connected between the power supply battery and the lighting LED lamp to control the conduction or disconnection between the lighting LED lamp and the power supply battery.

[0018] Among them, the knob switch can rotate to eight voltage levels, including 10kV, 20kV, 35kV, 110kV, 220kV, 330kV, 550kV, 750kV and 1000kV.

[0019] Wherein, the insulating joint is made of a material with high insulation performance, which includes epoxy resin and polyethylene.

[0020] Wherein, the device to be tested is a high voltage cable.

[0021] Implementing the embodiments of the present invention has the following beneficial effects:

[0022] 1. The present invention is based on the induced electromotive force obtained by the electromagnetic inductor when the knob switch is rotated to a position of a certain voltage level and the insulating rod drives the shell to move. The controller selects a voltage threshold to compare with the induced electromotive force, and when the induced electromotive force is greater than or equal to the selected voltage threshold, the alarm is made to alarm, so that the device can be applicable to the detection requirements of equipment of different voltage levels, thereby solving the problem that the existing anti-electric shock alarm grounding device has a single applicable voltage level and detection requirement specification;

[0023] 2. The present invention is based on a simple structure in which an insulating joint, a knob switch, an alarm, an electromagnetic sensor and a controller are arranged inside and outside the shell, so that the device has a certain degree of portability, thereby solving the problem of excessive size and weight of the existing anti-electric shock alarm grounding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0025] Figure 1 A schematic diagram of the internal circuit connection structure of a housing of an anti-electric shock alarm grounding device for distribution network operation provided in an embodiment of the present invention;

[0026] Figure 2 A back structural diagram of the exterior of a housing of an anti-electric shock alarm grounding device for distribution network operation provided in an embodiment of the present invention;

[0027] Figure 3 A front structural diagram of the exterior of a housing of an anti-electric shock alarm grounding device for distribution network operation provided in an embodiment of the present invention;

[0028] Figure 4 This is a diagram of an application scenario of an anti-electric shock alarm grounding device used in distribution network operation provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 3 As shown in the figure, an anti-electric shock alarm grounding device for distribution network operation is proposed in an embodiment of the present invention, including a closed shell; the shell is made of a material with high insulation performance (such as epoxy resin and polyethylene) in different portable shapes (such as watches), and is provided with an insulating joint 1 for connecting an insulating rod, a knob switch 2 for matching multiple voltage levels and an alarm 3, and an electromagnetic inductor 4 and a controller 5 are installed inside; wherein,

[0031] The insulating joint 1 is made of a material with high insulation performance, which is arranged on the back side L1 of the shell, and is connected to an insulating rod (not shown) made of a material with high insulation performance and driven by the insulating rod (for example, a machine or a worker lifts the rod) to drive the shell to move toward or away from the device to be tested (such as a high-voltage cable or a high-voltage electrical device); it should be noted that the front side of the shell is based on the earth as a reference object, the back side L1 of the shell is the side facing the ground, and the front side L2 of the shell is the side facing the sky (i.e., away from the ground);

[0032] The knob switch 2 is arranged on the back side L1 of the housing and is connected to the controller 5 through an electric wire or other conductive metal, and when it is rotated to a corresponding position corresponding to a certain voltage level, an electric signal of a corresponding level value is generated and sent to the controller 5; wherein, the level values ​​of the electric signals generated by the knob switch 2 when being rotated are all different; it should be noted that the voltage levels to which the knob switch 2 can be rotated include but are not limited to eight, such as 10kV, 20kV, 35kV, 110kV, 220kV, 330kV, 550kV, 750kV and 1000kV, etc.; at this time, the level values ​​corresponding to the electric signals increase in sequence, such as 1.1V, 1.3V, 1.5V, 1.7V, 1.9V, 2.1V, 2.3V and 2.5V, etc.;

[0033] The electromagnetic inductor 4 is connected to the controller 5 through an electrical conductor, and is used to sense the change of magnetic flux in real time to generate an induced electromotive force when the shell is driven to move, and send it to the controller 5; it should be noted that the electromagnetic inductor 4 generates the induced electromotive force based on the change of induced magnetic flux, which is a common technical means in the field and will not be described in detail here;

[0034] The controller 5 is connected to the alarm 3 through an electrical conductor, and is used to determine the current voltage threshold to be compared based on the level value of the electrical signal generated by the position of the knob switch 2 after it is rotated, and compare the received induced electromotive force with the current voltage threshold, and generate a first alarm signal when the induced electromotive force is greater than or equal to the current voltage threshold. It should be noted that there are multiple voltage thresholds to be compared and they are pre-defined in the controller 5, and they are set differently according to different voltage levels to meet the safety distance requirements of each voltage level, which will not be repeated here;

[0035] The alarm 3 is arranged on the back side L1 of the housing, and is used to give an alarm when receiving the first alarm signal generated by the controller 5. The alarm 3 includes a buzzer 31 and two LED indicator lights 32 to realize sound and light alarm.

[0036] It should be noted that the knob switch 2 also has TEST and OFF positions, which are used for the device to perform self-test and shut down respectively.

[0037] In the embodiment of the present invention, a battery compartment 6 and a battery compartment cover 7 for installing a power supply battery (not shown) are further provided outside the shell; wherein the battery compartment 6 is a groove arranged on the back side L1 of the shell; the battery compartment cover 7 is made of plastic and is covered on the battery compartment 6.

[0038] In an embodiment of the present invention, a low-battery indicator light 8 for displaying a low-battery alarm is further provided outside the shell; wherein the low-battery indicator light 8 is arranged on the back side L1 of the shell and is connected to the controller 5 through an electrical conductor, and is used to light up and flash when receiving a second alarm signal generated by the controller 5 detecting that the internal voltage value of the power supply battery is less than a predetermined lower limit value, so as to promptly remind the staff to charge or replace the battery to ensure that the device can be used normally.

[0039] In the embodiment of the present invention, a lighting switch 9 and a lighting LED lamp 10 are further provided outside the shell; wherein, the lighting LED lamps 10 (such as two) are arranged on the front side L2 of the shell and connected to the power supply battery; the lighting switch 9 is arranged on the back side L1 of the shell and is located on the wire connecting the power supply battery and the lighting LED lamp to control the conduction or disconnection between the lighting LED lamp 10 and the power supply battery, so as to ensure use in an environment with poor lighting intensity.

[0040] like Figure 4 As shown, an application scenario of an anti-electric shock alarm grounding device used in distribution network operation and rescue in an embodiment of the present invention is further described as follows:

[0041] First, turn the knob switch 2 to the TEST position to perform a self-test on the device L. If the alarm 3 does not sound, it means that the device L is working properly. Turn the knob switch 2 to the OFF position to shut down the device L. If the low-power indicator light 8 of the device L gives a light prompt, please replace the battery or charge it in time.

[0042] Secondly, according to the voltage level of the 110V-1000kV voltage section, rotate the knob switch 2 to the corresponding voltage gear position so that the device L can select the corresponding voltage threshold through the controller 2 to meet the safety distance requirements;

[0043] Next, in an environment with poor lighting conditions, the LED lamp 10 may be turned on by the lighting switch 9 for lighting, and the insulating rod may be connected to the insulating joint 1;

[0044] Finally, the staff lifts the device L through the insulating rod for inspection. According to the power safety work regulations such as GB26859-2011 and GB26860-2011, the inspection work is carried out. If the alarm 3 emits an audible and visual prompt, the equipment under test has a corresponding or higher voltage, and preventive measures should be taken in time.

[0045] Implementing the embodiments of the present invention has the following beneficial effects:

[0046] 1. The present invention is based on the induced electromotive force obtained by the electromagnetic inductor when the knob switch is rotated to a position of a certain voltage level and the insulating rod drives the shell to move. The controller selects a voltage threshold to compare with the induced electromotive force, and when the induced electromotive force is greater than or equal to the selected voltage threshold, the alarm is made to alarm, so that the device can be applicable to the detection requirements of equipment of different voltage levels, thereby solving the problem that the existing anti-electric shock alarm grounding device has a single applicable voltage level and detection requirement specification;

[0047] 2. The present invention is based on a simple structure in which an insulating joint, a knob switch, an alarm, an electromagnetic sensor and a controller are arranged inside and outside the shell, so that the device has a certain degree of portability, thereby solving the problem of excessive size and weight of the existing anti-electric shock alarm grounding device.

[0048] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An anti-electric shock alarm grounding device used in distribution network operation, characterized in that: It comprises a closed shell; the shell is provided with an insulating joint for connecting an insulating rod, a knob switch for matching multiple voltage levels and an alarm; the shell is provided with an electromagnetic inductor and a controller; wherein, The insulating joint is connected to the insulating rod and driven by the insulating rod to drive the housing to move toward or away from the device to be tested; The knob switch is connected to the controller, and when it is rotated to a corresponding position corresponding to a certain voltage level, it generates an electrical signal of a corresponding level value and sends it to the controller; wherein the level values ​​of the electrical signal generated by the knob switch when it is rotated are all different; The electromagnetic inductor is connected to the controller and is used to sense the change of magnetic flux in real time to generate an induced electromotive force when the shell is driven to move, and send the induced electromotive force to the controller; The controller is connected to the alarm device, and is used to determine the current voltage threshold to be compared based on the level value of the electric signal generated at the position of the knob switch after being rotated, and compare the received induced electromotive force with the current voltage threshold, and generate a first alarm signal when the induced electromotive force is greater than or equal to the current voltage threshold. The alarm is used to sound an alarm when receiving the first alarm signal generated by the controller.

2. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 1 is characterized in that: The alarm includes a buzzer and two LED indicator lights.

3. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 2 is characterized in that: The insulating joint, the knob switch and the alarm are all arranged on the back side of the shell; wherein the back side of the shell is the side facing the ground.

4. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 3 is characterized in that: A battery compartment and a battery compartment cover for installing a power supply battery are also provided outside the shell; wherein the battery compartment is a groove arranged on the back side of the shell; and the battery compartment cover is arranged on the battery compartment.

5. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 4 is characterized in that: A low-battery indicator light for displaying a low-battery alarm is also provided outside the shell; wherein the low-battery indicator light is arranged on the back of the shell and is connected to the controller, and is used to light up and flash when receiving a second alarm signal generated by the controller detecting that the internal voltage value of the power supply battery is less than a predetermined lower limit value.

6. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 5 is characterized in that: The housing is also provided with a lighting switch and a lighting LED lamp; wherein, The lighting LED lamp is arranged on the front side of the shell and connected to the power supply battery; wherein the front side of the shell is the side facing the sky; The lighting switch is arranged on the back side of the housing and is located on the wire connected between the power supply battery and the lighting LED lamp to control the conduction or disconnection between the lighting LED lamp and the power supply battery.

7. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 6 is characterized in that: The knob switch can rotate to eight voltage levels, including 10kV, 20kV, 35kV, 110kV, 220kV, 330kV, 550kV, 750kV and 1000kV.

8. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 7 is characterized in that: The insulating joint is made of a material with high insulation performance, which includes epoxy resin and polyethylene.

9. The anti-electric shock alarm grounding device used in distribution network operation as claimed in claim 8, characterized in that: The device to be tested is a high voltage cable.

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