CN111983396A - Electric high-voltage test area safety protection system - Google Patents

Abstract

The invention relates to a safety protection system for an electrical high-voltage test area. A first detection device for the lock signal of the test area, arranged at the entrance of the second test area, communicated with the control device and connected to the second detection device for performing the instructed work according to the instruction signal and sending the lock signal of the second test area, and a third detection device which is arranged outside the first test area, detects the grounding state of the high-voltage electric wire in the first test area, and sends a grounding signal to the control device. The invention can ensure the safety of the first test area and the second test area before the test personnel can enter the test area to avoid electric shock; when there is a problem with the ground wire state, the door lock of the test area cannot be unlocked to protect personal safety; ,save time. With remote area protection, for large-scale equipment to be tested, it can effectively protect the safety of test personnel.

Description

A safety protection system for electrical high voltage test area

technical field

The invention relates to the field of electrical technology, and more particularly, to an electrical high-voltage test area safety protection system.

Background technique

In the field of power systems, power plants and other power fields, high-voltage electrical tests (1KV and above) of equipment are widely carried out. Once the staff accidentally contacts the high-voltage electricity, it is easy to cause casualties. Therefore, before working, the test area must be set up with red and white warning tapes, and irrelevant personnel are prohibited from entering. After completing the test wiring, confirm that the test area is complete and there is no one in the equipment, and then power on the high-voltage test generator. The test area consisting of the existing red and white warning tape has the following danger points in the following steps:

1. It is easy for the person in charge of the test to forget the discharge or grounding operation to cause electric shock: during the test, when the person in charge of the test needs to enter the test area to change wires, disconnect wires, etc. The high-voltage test equipment is discharged to 0V and then connected to the ground wire before entering the operation. If one of these steps is forgotten, it is easy to cause electric shock.

2. If the ground wire is not firmly grounded or in poor contact, it is easy to cause electric shock to personnel: the ground wire is clamped in the high-voltage circuit to protect personal safety, but if the ground wire is disconnected, the ground is not firmly grounded or the contact is poor, it is easy to cause electric shock to personnel.

3. Start the test again after changing the line, and it is easy to forget to remove the ground wire. At this time, the power-on test of the high-voltage test generator will easily cause short circuit and overcurrent burnout.

4. Sometimes the location of the line change is located on another floor or a distant location. When the tester goes to work far away, other people energize the test instrument, which may easily cause the tester to get an electric shock.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an electrical high-voltage test area safety protection system aiming at the above-mentioned defects of the prior art.

The technical scheme adopted by the present invention to solve the technical problem is: constructing an electrical high-voltage test area safety protection system, including: a control device, a first detection device, a second detection device, and a third detection device;

The control device is arranged between the tester and the power supply, the first detection device is arranged at the entrance of the first test area, the second detection device is arranged at the entrance of the second test area, and the third detection device is arranged at the entrance of the second test area. The device is arranged outside the first test area;

The first detection device is connected in communication with the control device, and is configured to perform an instruction operation according to an instruction signal sent by the control device and send a lock signal of the first test area to the control device;

The second detection device is connected in communication with the control device, and is configured to perform an instruction operation according to an instruction signal sent by the control device and send a lock signal of the second test area to the control device;

The third detection device is connected in communication with the control device, and is used for detecting the grounding state of the high-voltage electric wire in the first test area and sending a grounding signal to the control device;

The control device is configured to detect the grounding state of the grounding wire according to the grounding signal, and send an instruction signal to the first detection device and the second detection device according to the grounding state and the on-off state of the power supply.

Preferably, the first detection device includes: a first electromagnetic lock; the first test area includes: a first retractable door;

the first electromagnetic lock is arranged at the entrance of the first test area and is connected with the first telescopic door;

The first electromagnetic lock is used to detect the open/closed state of the first retractable door, and send a locking signal of the first retractable door to the control device when the first retractable door is closed; and,

It is used to perform the ground wire connection instruction work according to the instruction signal sent by the control device; and/or, perform the power connection instruction work according to the instruction signal sent by the control device; and/or according to the instruction sent by the control device. The signal performs an indication that the first test area is operational.

Preferably, the first detection device further comprises: a first wireless communication module;

The first wireless communication module is communicatively connected to the control device for the first detection device to communicate with the control device.

Preferably, the second detection device includes: a second electromagnetic lock; the second test area includes: a second retractable door;

the second electromagnetic lock is arranged at the entrance of the second test area and is connected with the second telescopic door;

The second electromagnetic lock is used to detect the open/closed state of the second retractable door, and send a locking signal of the second retractable door to the control device when the second retractable door is closed; and,

It is used to perform the ground wire connection instruction work according to the instruction signal sent by the control device; and/or, perform the power connection instruction work according to the instruction signal sent by the control device; and/or according to the instruction sent by the control device. The signal performs an indication that the second test area is operational.

Preferably, the second detection device further comprises: a second wireless communication module;

The second wireless communication module is communicatively connected to the control device for the second detection device to communicate with the control device.

Preferably, the third detection device comprises: a monitoring device connected in communication with the control device;

The monitoring device is used for detecting the grounding state of the high-voltage electric wire in the first test area and sending the grounding signal to the control device.

Preferably, the third detection device further comprises: a first clamping device, a second clamping device rotatably connected to the first clamping device and insulated, and a second clamping device disposed on the second clamping device switchgear;

The first end of the monitoring device is connected to the first clamping device, the second end of the monitoring device is connected to the switching device, and the third end of the monitoring device is grounded and the second clamping device ground;

When the first clamping device and the second clamping device are clamped on the high-voltage electric wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage electric wire and grounded If the wire is connected, the monitoring device outputs a first indication signal; if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the ground wire is in poor contact, the monitoring device The device outputs a second indication signal.

Preferably, the third detection device further comprises: respectively connected with the first clamping device and the second clamping device, so that the first clamping device and the second clamping device can be rotated Connected and insulated insulated shafts.

Preferably, the first clamping device includes: a ground clamp; the second clamping device includes: a test clamp;

The grounding clip includes: a first clamping part and a first connecting part;

The test clip includes: a second clamping part and a second connecting part;

The first connection part is connected to the first end of the monitoring device, the second connection part is grounded, and the switch device is arranged on the second clamping part; the first clamping part of the grounding clip When the second clamping part of the test clip is clamped to the high-voltage electric wire, the switching device is closed, and the monitoring device is activated.

Preferably, the monitoring device comprises: a monitoring device body, a power supply device, a current detection circuit, a first indication circuit, and a second indication circuit provided on the monitoring body;

The first end of the power supply device is connected to the first end of the switching device, the second end of the switching device is connected to the first end of the current detection circuit, and the second end of the current detection circuit is connected to the the second end of the power supply device;

The first end of the first indication circuit is connected to the first end of the current detection circuit, and the second end of the first indication circuit is connected to the second end of the current detection circuit;

The first end of the second indication circuit is connected to the first end of the current detection circuit, and the second end of the second indication circuit is connected to the second end of the current detection circuit;

When the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the ground wire is connected, the switch device is closed, the current detection circuit works, and the first indication circuit turn on and output the first indication signal;

The first clamping device and the second clamping device have poor contact with the high-voltage wire and/or the ground wire, the current detection circuit does not work, and the second indicating circuit is turned on and outputs the the second indication signal.

Preferably, the current detection circuit includes: a current limiting circuit and a current detection relay;

The current detection relay includes: a current detection part;

The first end of the current limiting circuit is connected to the second end of the switching device as the first end of the current detection circuit, the second end of the current limiting circuit is connected to the second clamping device, and the current The first end of the detection part is connected to the first clamping device, and the second end of the current detection part is connected to the second end of the power supply device as the second end of the current detection circuit.

Preferably, the current detection relay includes: a first switch; the first indication circuit includes: a first indicator light;

The first end of the first switch is connected to the first end of the current limiting current, the second end of the first switch is connected to the first end of the first indicator light, and the first end of the first indicator light is connected. the second end is connected to the second end of the current detection part;

When the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the ground wire is connected, the switch device is closed, and the current detection unit controls the first switch to be closed, The first indicator light generates the first indication signal.

Preferably, the current detection relay includes: a second switch; the second indication circuit includes: a second indicator light;

The first end of the second switch is connected to the first end of the current limiting current, the second end of the second switch is connected to the first end of the second indicator light, and the second indicator light is the second end is connected to the second end of the current detection part;

When the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire is in poor contact, the switch device is closed, and the current detection unit controls the second switch to be closed, The second indicator light generates the second indication signal.

Preferably, the second indication circuit further comprises: an alarm;

the alarm is connected in parallel with the second indicator light;

When the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire is in poor contact, the switch device is closed, and the current detection unit controls the second switch to be closed, The alarm works and outputs an alarm signal.

Preferably, the third detection device further comprises: a third wireless communication module;

The third wireless communication module is communicatively connected to the control device for the third detection device to communicate with the control device.

Preferably, the control device includes: a power supply module, an interface module connected to the power supply, and a controller;

the power module is connected to the interface module and the controller, and is used for supplying power to the interface module and the controller;

The interface module is respectively connected to the controller and the power supply, and is used to perform power on and off work according to the control of the controller;

The controller is configured to detect the grounding state of the grounding wire according to the grounding signal sent by the third detection device, and control the power on and off according to the grounding state; and sending an indication signal to the second detection device.

Preferably, the control device further comprises: a fourth wireless communication module connected to the controller;

The fourth wireless communication module is connected in communication with the first detection device, the second detection device and the third detection device, so that the control device can communicate with the first detection device and the second detection device. The device communicates with the third detection device.

Preferably, the control device further comprises: a display module connected to the controller;

The display module is used to display the grounding state of the ground wire, the working state of the first test area, the working state of the second test area, and the on-off state of the power supply.

Implementing the safety protection system for the electrical high-voltage test area of the present invention has the following beneficial effects: including a control device arranged between the tester and the power supply, arranged at the entrance of the first test area, and communicated with the control device to execute instructions according to the instruction signal. The first detection device that works and sends the lock signal of the first test area is arranged at the entrance of the second test area, and is connected to the control device in communication with the control device to perform the indicated work according to the instruction signal and send the lock signal of the second test area. Two detection devices, and a third detection device disposed outside the first test area, detecting the grounding state of the high-voltage wires in the first test area, and sending a grounding signal to the control device. The invention can ensure the safety of the first test area and the second test area before the test personnel can enter the test area to avoid electric shock; when there is a problem with the ground wire state, the door lock of the test area cannot be unlocked to protect personal safety; ,save time. With remote area protection, for large-scale equipment to be tested, it can effectively protect the safety of test personnel.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural diagram of an electrical high-voltage test area safety protection system provided by an embodiment of the present invention;

2 is a schematic diagram of communication of a first detection device, a second detection device, a third detection device, and a control device provided by an embodiment of the present invention;

3 is a schematic structural diagram of a third detection device provided by an embodiment of the present invention;

4 is a schematic front view of the structure of the connection between the first clamping device and the second clamping device provided by an embodiment of the present invention;

5 is a schematic side view of the structure of the connection between the first clamping device and the second clamping device provided by an embodiment of the present invention;

FIG. 6 is a schematic circuit diagram of a third detection device provided by an embodiment of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In order to solve the problems existing in the current test area that are easy to cause electric shock to the test personnel, that the power-on test of the high-voltage test generator is easy to cause short circuit, overcurrent burning insurance, and the operator is not clear about the remote operating environment and misoperation leads to electric shock to the remote operation test personnel. To solve the problem, the present invention provides an electrical high-voltage test area safety protection system. This can ensure that the door of the test area will be unlocked after the tester must complete the power-off, discharge and grounding during the test process, and the tester can enter the test area, which can effectively prevent the tester from being electrocuted. Moreover, when the grounding wire monitoring loop detects that the grounding wire is disconnected, the grounding is not firm, or the contact is poor, the door of the test area cannot be unlocked, so that the test personnel cannot enter the test area under these conditions, so as to protect personal safety. In addition, if you forget to remove the ground wire after changing the wire, the power supply will not be energized, which can protect the test instrument and save time. It also has remote area protection, which can effectively protect the safety of test personnel for large-scale equipment to be tested.

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of an optional embodiment of each embodiment provided by the present invention.

Specifically, as shown in FIG. 1 , the electrical high-voltage test area safety protection system includes: a control device 40 , a first detection device 10 , a second detection device 20 , and a third detection device 30 .

The control device 40 is arranged between the tester and the power source 70 , the first detection device 10 is arranged at the entrance of the first test area 100 , and the second detection device 20 is arranged at the entrance of the second test area 200 , the third detection device 30 is arranged outside the first test area 100 . In some embodiments, the second test area 200 may be at the same location as the first test area 100 and spaced apart, or the second test area 200 may be not the same as the first test area 100 The location and the invisible area, such as the second test area 200 and the first test area 100 are not on the same floor or in a far away location.

In some embodiments, the first detection device 10 is connected in communication with the control device 40 , and is configured to perform an instruction work according to an instruction signal sent by the control device 40 and send the first test area to the control device 40 100 lock signal.

Further, in some embodiments, the first detection device 10 includes: a first electromagnetic lock; the first test area 100 includes: a first retractable door 50 . The first electromagnetic lock is disposed at the entrance of the first test area 100 and is connected to the first telescopic door 50 .

The first electromagnetic lock is used to detect the open/closed state of the first telescopic door 50, and send a locking signal of the first telescopic door 50 to the control device 40 when the first telescopic door 50 is closed; And, according to the instruction signal sent by the control device 40 to perform the ground wire connection instruction work; and/or, according to the instruction signal sent by the control device 40 to perform the power supply 70 connection instruction work; and/or according to the The instruction signal sent by the control device 40 executes the instruction work that the first test area 100 is operable.

In some embodiments, the first electromagnetic lock may include at least one LED light and a sound prompt module. The at least one LED light and the sound prompt module can be used to perform corresponding indication work. For example, in some embodiments, the first electromagnetic lock may include a green LED light, a red LED light, and a yellow LED light. Wherein, when the first electromagnetic lock receives the ground signal that the ground wire is connected, the green LED light is on; when the first electromagnetic lock receives the power-on signal that the power supply 70 is connected, the red LED light is on, and the sound prompt module can Beep sound (the sound prompt module can be used as a supplementary prompt when the red LED light is broken); when the first electromagnetic lock receives that the first test area 100 is in working state, the yellow LED light is on to indicate the first test area 100 The equipment inside is in working state; when the first electromagnetic lock receives the grounding signal that the grounding wire is not firm, the contact is poor or the grounding wire is disconnected, the first electromagnetic lock is locked, so that the first retractable door 50 cannot be opened , the test personnel cannot enter the first test area 100 .

Further, the first detection device 10 further includes: a first wireless communication module. The first wireless communication module is communicatively connected to the control device 40 for the first detection device 10 to communicate with the control device 40 . Optionally, the first wireless communication module includes but is not limited to any one or more of a 2G module, a 3G module, a 4G module, a 5G module, a WIFI module, and a Bluetooth module.

In some embodiments, the second detection device 20 is connected in communication with the control device 40 , and is configured to perform an instruction operation according to an instruction signal sent by the control device 40 and send the second detection device 40 to the control device 40 . Lock signal for test area 200 .

Further, in some embodiments, the second detection device 20 includes: a second electromagnetic lock; the second test area 200 includes: a second retractable door 60 . The second electromagnetic lock is disposed at the entrance of the second test area 200 and is connected to the second telescopic door 60 .

The second electromagnetic lock is used to detect the open/closed state of the second telescopic door 60, and send a locking signal of the second telescopic door 60 to the control device 40 when the second telescopic door 60 is closed; And, according to the instruction signal sent by the control device 40 to perform the ground wire connection instruction work; and/or, according to the instruction signal sent by the control device 40 to perform the power supply 70 connection instruction work; and/or according to the The instruction signal sent by the control device 40 executes the instruction work that the second test area 200 is operable.

In some embodiments, the second electromagnetic lock may include at least one LED light and a sound prompt module. The at least one LED light and the sound prompt module can be used to perform corresponding indication work. For example, in some embodiments, the second electromagnetic lock may include a green LED light, a red LED light, and a yellow LED light. Wherein, when the second electromagnetic lock receives the grounding signal that the grounding wire is connected, the green LED light is on; when the second electromagnetic lock receives the power-on signal that the power supply 70 is connected, the red LED light is on, and the sound prompt module can A beep sound (the sound prompt module can be used as a supplementary prompt when the red LED light is broken); when the second electromagnetic lock receives that the second test area 200 is in working state, the yellow LED light is on to indicate the second test area 200 The equipment inside is in working state; when the second electromagnetic lock receives the grounding signal that the grounding wire is not firm, the contact is poor or the grounding wire is disconnected, the second electromagnetic lock is locked, so that the second retractable door 60 cannot be opened , the test personnel cannot enter the second test area 200 .

Further, the second detection device 20 further includes: a second wireless communication module. Wherein, the second wireless communication module is communicatively connected to the control device 40 for the second detection device 20 to communicate with the control device 40 . Optionally, the second wireless communication module includes but is not limited to any one or more of a 2G module, a 3G module, a 4G module, a 5G module, a WIFI module, and a Bluetooth module.

In some embodiments, the third detection device 30 is connected in communication with the control device 40 for detecting the grounding state of the high-voltage wires in the first test area 100 and sending a grounding signal to the control device 40 .

In some embodiments, the control device 40 is configured to detect the grounding state of the grounding wire according to the grounding signal, and report to the first detection device 10 and the first detection device 10 and the all The second detection device 20 sends an indication signal.

Further, in some embodiments, the control device 40 includes: a power supply module, an interface module connected to the power supply, and a controller.

Wherein, the power module is connected with the interface module and the controller, and is used for supplying power to the interface module and the controller. The interface modules are respectively connected with the controller and the power supply 70, and are used for turning on and off the power supply 70 according to the control of the controller. The controller is configured to detect the grounding state of the ground wire according to the grounding signal sent by the third detection device 30, and control the power supply 70 to be on and off according to the grounding state; The first detection device 10 and the second detection device 20 send an indication signal.

Specifically, when the controller receives the grounding signal sent by the third detection device 30 that the grounding wire is connected, it sends an unlocking instruction signal to the first electromagnetic lock and the second electromagnetic lock according to the connected grounding signal, and simultaneously controls the The device control interface module is disconnected from the power supply 70; after receiving the unlocking instruction signal, the first electromagnetic lock and the second electromagnetic lock execute the unlocking action respectively, and at the same time their respective green LED lights are constantly on, and the test personnel see the green LED lights at this time. When the light is always on, the first test area 100 and the second test area 200 can be confirmed to be safe, and the first telescopic door 50 and/or the second telescopic door 60 can be directly opened to enter the first test area 100 and/or the second test area 200 Work. When the controller receives the grounding signal sent by the third detection device 30 with problems such as poor grounding, loose grounding, disconnected grounding, etc., the controller sends a locking indication signal to the first detection device according to the faulty grounding signal. The electromagnetic lock and the second electromagnetic lock, at the same time, the controller controls the interface module to disconnect from the power supply 70; the first electromagnetic lock and the second electromagnetic lock lock the first telescopic door 50 and the second after receiving the locking indication signal, respectively. The telescopic door 60 prevents the test personnel from opening the first telescopic door 50 and the second telescopic door 60, and further informs the test personnel that the first test area 100 and the second test area 200 are not safe, so that the test personnel cannot enter the first test area 100 and the second test area 200. The second test area 200 ensures the personal safety of the test personnel.

In addition, when the tester completes the work and removes the ground wire, lock the first telescopic door 50 and the second telescopic door 60, and the first electromagnetic lock and the second electromagnetic lock detect the first telescopic door 50 and the second telescopic door 50 and the second telescopic door respectively. After the door 60 is closed, the first electromagnetic lock and the second electromagnetic lock are locked respectively, and at the same time, the locking signal of the first retractable door 50 and the locking signal of the second retractable door 60 are sent to the controller. At this time, The controller controls the interface module to be connected to the power supply 70; when the power supply 70 starts to send electricity, the controller sends a power-on signal to the first electromagnetic lock and the second electromagnetic lock, and the respective red LED lights of the first electromagnetic lock and the second electromagnetic lock start. Flashing to remind the test personnel not to enter the first test area 100 and the second test area 200 .

Further, the control device 40 further includes: a fourth wireless communication module connected with the controller;

The fourth wireless communication module is connected in communication with the first detection device 10, the second detection device 20 and the third detection device 30, so that the control device 40 can communicate with the first detection device 10, The second detection device 20 communicates with the third detection device 30 .

Further, the control device 40 further includes: a display module connected to the controller. The display module is used to display the grounding state of the ground wire, the working state of the first test area 100 , the working state of the second test area 200 , and the on-off state of the power supply 70 .

2 shows the communication between the first detection device 10 , the second detection device 20 , the third detection device 30 and the control device 40 .

Further, in some embodiments, as shown in FIG. 3 , the third detection device 30 includes: a monitoring device 35 connected in communication with the control device 40 . The monitoring device 35 is used to detect the grounding state of the high-voltage electric wire in the first test area 100 and send the grounding signal to the control device 40 .

Further, in some embodiments, the third detection device 30 further includes: a first clamping device 31 , a second clamping device 32 rotatably connected to and insulated from the first clamping device 31 , and a second clamping device 32 disposed on the The switch device 34 on the second clamping device 32 .

The first end of the monitoring device 35 is connected to the first clamping device 31, the second end of the monitoring device 35 is connected to the switch device 34, and the third end of the monitoring device 35 is grounded and the The second clamping device 32 is grounded; when the first clamping device 31 and the second clamping device 32 are clamped on the high-voltage wire, if the first clamping device 31 and the second clamping device 32 is stably clamped on the high-voltage wire and the ground wire is connected, the monitoring device 35 outputs a first indication signal; if the first clamping device 31 and the second clamping device 32 and the high-voltage If the wire is in poor contact and/or the ground wire is in poor contact, the monitoring device 35 outputs a second indication signal. Further, when the first clamping device 31 and the second clamping device 32 are clamped on the high-voltage electric wire, if the first clamping device 31 and the second clamping device 32 are stably clamped on the high-voltage electric wire and the ground wire is conductive , the monitoring device 35 outputs the first indication signal; if the first clamping device 31 and the second clamping device 32 are in poor contact with the high-voltage wire and/or the ground wire is in poor contact, the monitoring device 35 outputs the second indication signal. The first indication signal is an indication signal when the first clamping device 31 and the second clamping device 32 are stably clamped on the high-voltage wire, the contact point is good, and the ground wire is reliably grounded (ie, the ground wire is connected). The second indication signal is that the ground wire is not firmly grounded, the contact is poor, the grounding point itself has problems, the first clamping device 31 and the second clamping device 32 are in poor contact with the high-voltage wire, and the ground wire is in poor contact. indicator signal. When the monitoring device 35 outputs the first indication signal, it means that the grounding is good and the working environment is safe; when the monitoring device 35 outputs the second indication signal, it means that the working environment is unsafe and the operation cannot be performed.

Further, as shown in FIG. 4 and FIG. 5 , in some embodiments, the third detection device 30 further includes: connected with the first clamping device 31 and the second clamping device 32 respectively, so that the The first clamping device 31 and the second clamping device 32 are rotatably connected to an insulated rotating shaft 33 that is insulated. Specifically, the first clamping device 31 and the second clamping device 32 can work movably at the same time, for example, they can be clamped at the same time. In addition, through this design, the detection device can accurately detect whether the ground wire is good.

In some embodiments, the first clamping device 31 includes: a ground clamp; the second clamping device 32 includes: a test clamp.

Specifically, the grounding clip includes: a first clamping part and a first connecting part. The test clip includes: a second clamping part and a second connecting part.

The first connection part is connected to the first end of the monitoring device 35, the second connection part is grounded, and the switch device 34 is arranged on the second clamping part; the first clamping part of the grounding clip and the second clamping part of the test clamp When the upper part is clamped to the high-voltage wire, the switch device 34 is closed, and the monitoring device 35 is activated. Specifically, by arranging the switch device 34 on the second clamping part of the test clip, when the test clip does not work, there is nothing in the middle of it, which has no effect on the switch device 34. At this time, the switch device 34 is in an open state. Therefore, The circuit within the monitoring device 35 is inoperative. When the test clip is clamped on the high voltage wire, the high voltage wire presses the switch device 34, the resulting force closes the switch device 34, and the circuit in the monitoring device 35 starts to work.

In some embodiments, optionally, the switch device 34 includes: a micro switch. By arranging the micro switch in the holding part of the second holding device 32, as long as the holding part of the second holding device 32 holds something, a force can be generated on the micro switch, and the force can make the The microswitch closes quickly, thereby triggering the circuit to work.

In some embodiments, the monitoring device 35 may include: a monitoring device body, a power supply device 351 , a current detection circuit 352 , a first indication circuit 354 , and a second indication circuit 355 provided on the monitoring body.

The first end of the power supply device 351 is connected to the first end of the switch device 34 , the second end of the switch device 34 is connected to the first end of the current detection circuit 352 , and the second end of the current detection circuit 352 is connected to the second end of the power supply device 351 The first end of the first indication circuit 354 is connected to the first end of the current detection circuit 352, the second end of the first indication circuit 354 is connected to the second end of the current detection circuit 352; the first end of the second indication circuit 355 It is connected to the first end of the current detection circuit 352 , and the second end of the second indication circuit 355 is connected to the second end of the current detection circuit 352 .

Among them, when the first clamping device 31 and the second clamping device 32 are stably clamped on the high-voltage wire and the grounding wire is connected, the switch device 34 is closed, the current detection circuit 352 works, the first indication circuit 354 is turned on and outputs the first indication circuit 354. an indicator signal. If the first clamping device 31 and the second clamping device 32 have poor contact with the high-voltage wire and/or the ground wire, the current detection circuit 352 does not work, and the second indication circuit 355 is turned on and outputs a second indication signal.

In some embodiments, the current detection circuit 352 includes: a current limiting circuit 353 and a current detection relay.

Wherein, the current detection relay includes: a current detection part.

Specifically, the first end of the current limiting circuit 353 is connected to the second end of the switching device 34 as the first end of the current detection circuit 352, the second end of the current limiting circuit 353 is connected to the second clamping device 32, and the The first end is connected to the first clamping device 31 , and the second end of the current detection part is connected to the second end of the power supply device 351 as the second end of the current detection circuit 352 .

Further, the current detection relay further includes: a first switch; and the first indication circuit 354 includes: a first indicator light.

Specifically, the first end of the first switch is connected to the first end of the current limiting current, the second end of the first switch is connected to the first end of the first indicator light, and the second end of the first indicator light is connected to the current detection connected to the second end of the part.

Among them, when the first clamping device 31 and the second clamping device 32 are stably clamped on the high-voltage wire and the ground wire is connected, the switch device 34 is closed, the current detection unit controls the first switch to close, and the first indicator light generates the first indication signal. In some embodiments, the first indicator light may be an LED light, wherein the first indicator light may be a green light.

Further, in some embodiments, the current detection relay includes: a second switch; and the second indication circuit 355 includes: a second indicator light.

Specifically, the first end of the second switch is connected to the first end of the current limiting current, the second end of the second switch is connected to the first end of the second indicator light, and the second end of the second indicator light is connected to the current detection part the second end of the connection.

Wherein, when the first clamping device 31 and the second clamping device 32 are in poor contact with the high-voltage wire and/or the grounding wire is in poor contact, the switch device 34 is closed, the current detection unit controls the second switch to close, and the second indicator light generates a second indication signal. In some embodiments, the second indicator light may be an LED light, wherein the second indicator light may be a red light.

Further, in some embodiments, the second indication circuit 355 further includes: an alarm. The alarm is connected in parallel with the second indicator light. Optionally, the alarm includes but is not limited to sound alarms such as a buzzer or a horn.

Wherein, when the first clamping device 31 and the second clamping device 32 are in poor contact with the high-voltage wire and/or the grounding wire is in poor contact, the switch device 34 is closed, the current detection unit controls the second switch to close, the alarm works and outputs an alarm signal .

Further, in some embodiments, the current limiting circuit 353 may include: a current limiting resistor. The first end of the current limiting resistor is the first end of the current limiting circuit 353 , and the second end of the current limiting resistor is the second end of the current limiting circuit 353 . Optionally, in some embodiments, the current limiting circuit 353 may be implemented by using a single resistor or multiple resistors in series and parallel, which is not specifically required or limited in the present invention.

In some embodiments, the power supply device 351 may be a battery, wherein the battery may be a rechargeable battery or a non-rechargeable battery, wherein the battery capacity is determined by specific requirements, which is not limited in the present invention.

Further, as shown in FIG. 6 , it is a schematic diagram of an equivalent circuit of an embodiment of the present invention.

Specifically, as shown in FIG. 6 , in the present invention, the two clips can be rotated at the same time by connecting the two clips through the insulating rotating shaft 33 . In FIG. 6 , the two clips (the ground clip and the test clip) are equivalent to S0 in 6. Due to the characteristics of the current detection relay itself, when the current flowing through the current detection relay is less than 0.1A, the current detection relay does not operate. At this time, the first switch is normally open and the second switch is normally closed; When the current of the relay is greater than 0.1A, the current detection relay acts to control the first switch to close and the second switch to open. Therefore, based on this principle, when the ground clip and the test clip do not work (nothing is clamped), there is nothing in the middle of the test clip, and the micro switch is not stressed. Therefore, the micro switch is in an open state, the monitoring circuit does not work, and the current There is no current on the detection relay and the current detection relay does not work. When the grounding clip and the test clip are clamped to the high-voltage wire, the grounding clip and the test clip are connected (that is, S0 is closed). start working. Taking the battery voltage of 1.5V and the current limiting resistance of 7 ohms as an example, the detection device and the monitoring device 35 form a loop through a high-voltage wire, and the current detection relay monitors the loop current. If the grounding clip and the test clip are well clamped on the high-voltage wire, and the grounding wire is also well connected, its resistance can be ignored, and a current of 0.25A will be generated. At this time, the current detection relay operates and the first switch is closed. The second switch is disconnected, and the first indicator light (green light) is on. If the ground clip and the test clip are not properly clamped on the high-voltage wire, or the ground wire is disconnected, the current is basically equal to 0, the current detection relay does not operate, the second switch is in the open state, and the first switch remains in the closed state. The second indicator light (red light) is on, and the buzzer/horn alarms at the same time, reminding the staff that it is dangerous and not allowed to work.

Further, in some embodiments, the third detection apparatus 30 further includes: a third wireless communication module. The third wireless communication module is communicatively connected to the control device 40 for the third detection device 30 to communicate with the control device 40 . Optionally, the second wireless communication module includes but is not limited to any one or more of a 2G module, a 3G module, a 4G module, a 5G module, a WIFI module, and a Bluetooth module.

The above embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention. All equivalent changes and modifications made with the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (18)

1. An electrical high-voltage test area safety protection system, comprising: a control device, a first detection device, a second detection device, and a third detection device;

the control device is arranged between the tester and the power supply, the first detection device is arranged at the inlet of the first test area, the second detection device is arranged at the inlet of the second test area, and the third detection device is arranged outside the first test area;

the first detection device is in communication connection with the control device and is used for executing instruction work according to the instruction signal sent by the control device and sending a locking signal of the first test area to the control device;

the second detection device is in communication connection with the control device and is used for executing instruction work according to the instruction signal sent by the control device and sending a locking signal of the second test area to the control device;

the third detection device is in communication connection with the control device and is used for detecting the state of a grounding wire of the high-voltage wire in the first test area and sending a grounding signal to the control device;

the control device is used for detecting the grounding state of the grounding wire according to the grounding signal and sending an indication signal to the first detection device and the second detection device according to the grounding state and the on-off state of the power supply.

2. An electrical high voltage test area safety protection system according to claim 1, wherein the first detection means comprises: a first electromagnetic lock; the first test zone comprises: a first retractable door;

the first electromagnetic lock is arranged at an inlet of the first test area and is connected with the first telescopic door;

the first electromagnetic lock is used for detecting the opening/closing state of the first retractable door and sending a locking signal of the first retractable door to the control device when the first retractable door is closed; and the number of the first and second groups,

the ground wire switch-on indicating device is used for executing ground wire switch-on indicating work according to an indicating signal sent by the control device; and/or, the power supply connection indicating work is executed according to the indicating signal sent by the control device; and/or performing an indicating operation that the first test area is operable according to an indicating signal sent by the control device.

3. An electrical high voltage test area safety protection system according to claim 1, wherein the first detection device further comprises: a first wireless communication module;

the first wireless communication module is in communication connection with the control device, so that the first detection device can communicate with the control device.

4. An electrical high voltage test area safety protection system according to claim 1, wherein the second detection means comprises: a second electromagnetic lock; the second test zone comprises: a second retractable door;

the second electromagnetic lock is arranged at an inlet of the second test area and is connected with the second telescopic door;

the second electromagnetic lock is used for detecting the opening/closing state of the second retractable door and sending a locking signal of the second retractable door to the control device when the second retractable door is closed; and the number of the first and second groups,

the ground wire switch-on indicating device is used for executing ground wire switch-on indicating work according to an indicating signal sent by the control device; and/or, the power supply connection indicating work is executed according to the indicating signal sent by the control device; and/or performing an indicating operation that the second test area is operable according to an indicating signal transmitted by the control device.

5. An electrical high voltage test area safety protection system according to claim 1, wherein the second detection means further comprises: a second wireless communication module;

the second wireless communication module is in communication connection with the control device, so that the second detection device can communicate with the control device.

6. An electrical high voltage test area safety protection system according to claim 1, wherein the third detection means comprises: the monitoring device is in communication connection with the control device;

the monitoring device is used for detecting the state of a grounding wire of the high-voltage wire in the first test area and sending the grounding signal to the control device.

7. An electrical high voltage test area safety protection system according to claim 6, wherein the third detection means further comprises: the device comprises a first clamping device, a second clamping device which is rotatably connected with the first clamping device and is insulated, and a switch device arranged on the second clamping device;

the first end of the monitoring device is connected with the first clamping device, the second end of the monitoring device is connected with the switching device, and the third end of the monitoring device is grounded and the second clamping device is grounded;

when the first clamping device and the second clamping device are clamped on a high-voltage wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage wire and a grounding wire is conducted, the monitoring device outputs a first indicating signal; and if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the monitoring device outputs a second indicating signal.

8. An electrical high voltage test area safety protection system according to claim 7, wherein the third detection means further comprises: and the insulating rotating shaft is respectively connected with the first clamping device and the second clamping device so that the first clamping device and the second clamping device can be rotatably connected and insulated.

9. An electrical high voltage test area safety protection system according to claim 7, wherein the first clamping device comprises: a grounding clip; the second clamping device includes: a test clip;

the ground clip includes: a first clamping part and a first connecting part;

the test clip includes: a second clamping portion and a second connecting portion;

the first connecting part is connected with a first end of the monitoring device, the second connecting part is grounded, and the switching device is arranged on the second clamping part; when the first clamping part of the grounding clamp and the second clamping part of the testing clamp the high-voltage wire, the switch device is closed, and the monitoring device is started.

10. An electrical high voltage test area safety protection system according to claim 7, wherein the monitoring device comprises: the monitoring device comprises a monitoring device body, a power supply device, a current detection circuit, a first indicating circuit and a second indicating circuit, wherein the power supply device, the current detection circuit, the first indicating circuit and the second indicating circuit are arranged on the monitoring device body;

the first end of the power supply device is connected with the first end of the switch device, the second end of the switch device is connected with the first end of the current detection circuit, and the second end of the current detection circuit is connected with the second end of the power supply device;

the first end of the first indicating circuit is connected with the first end of the current detecting circuit, and the second end of the first indicating circuit is connected with the second end of the current detecting circuit;

the first end of the second indicating circuit is connected with the first end of the current detecting circuit, and the second end of the second indicating circuit is connected with the second end of the current detecting circuit;

when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection circuit works, and the first indicating circuit is conducted and outputs the first indicating signal;

the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the current detection circuit does not work, and the second indicating circuit is conducted and outputs the second indicating signal.

11. An electrical high voltage test area safety protection system according to claim 10, wherein the current detection circuit comprises: a current limiting circuit and a current detection relay;

the current detection relay includes: a current detection unit;

the first end of the current limiting circuit is used as the first end of the current detection circuit to be connected with the second end of the switch device, the second end of the current limiting circuit is connected with the second clamping device, the first end of the current detection part is connected with the first clamping device, and the second end of the current detection part is used as the second end of the current detection circuit to be connected with the second end of the power supply device.

12. The electrical high voltage test area safety protection system of claim 11, wherein the current sensing relay comprises: a first switch; the first indication circuit includes: a first indicator light;

a first end of the first switch is connected with a first end of the current-limiting current, a second end of the first switch is connected with a first end of the first indicator light, and a second end of the first indicator light is connected with a second end of the current detection part;

when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection portion controls the first switch to be closed, and the first indicator lamp generates the first indicator signal.

13. The electrical high voltage test area safety protection system of claim 11, wherein the current sensing relay comprises: a second switch; the second indicating circuit includes: a second indicator light;

a first end of the second switch is connected with a first end of the current-limiting current, a second end of the second switch is connected with a first end of the second indicator light, and a second end of the second indicator light is connected with a second end of the current detection part;

when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the second indicator lamp generates the second indicator signal.

14. An electrical high voltage test area safety protection system according to claim 13, wherein the second indicator circuit further comprises: an alarm;

the alarm is connected with the second indicator light in parallel;

when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the alarm works and outputs an alarm signal.

15. An electrical high voltage test area safety protection system according to claim 6, wherein the third detection means further comprises: a third wireless communication module;

the third wireless communication module is in communication connection with the control device, so that the third detection device can communicate with the control device.

16. An electrical high voltage test area safety protection system according to claim 1, wherein the control device comprises: the power supply module, the interface module connected with the power supply and the controller;

the power supply module is connected with the interface module and the controller and used for supplying power to the interface module and the controller;

the interface module is respectively connected with the controller and the power supply and is used for switching on and switching off the power supply according to the control of the controller;

the controller is used for detecting the grounding state of the grounding wire according to the grounding signal sent by the third detection device and controlling the power supply to be switched on or off according to the grounding state; and sending an indication signal to the first detection device and the second detection device according to the on-off state of the power supply.

17. An electrical high voltage test area safety protection system according to claim 16, wherein the control device further comprises: a fourth wireless communication module connected with the controller;

the fourth wireless communication module is in communication connection with the first detection device, the second detection device and the third detection device, so that the control device can communicate with the first detection device, the second detection device and the third detection device.

18. An electrical high voltage test area safety protection system according to claim 16, wherein the control device further comprises: a display module connected with the controller;

the display module is used for displaying the grounding state of the grounding wire, the working state of the first test area, the working state of the second test area and the on-off state of the power supply.

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