CN219162280U - Quick direct current withstand voltage discharging device - Google Patents
Quick direct current withstand voltage discharging device Download PDFInfo
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- CN219162280U CN219162280U CN202221926342.2U CN202221926342U CN219162280U CN 219162280 U CN219162280 U CN 219162280U CN 202221926342 U CN202221926342 U CN 202221926342U CN 219162280 U CN219162280 U CN 219162280U
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Abstract
The utility model discloses a rapid direct-current withstand voltage discharging device which comprises a shell, a voltage and current monitoring device, an alternating-current motor, a speed reducer, a gear transmission unit, an insulating arc extinguishing protective cover, a current limiting resistor, a bottom grounding disc, an insulating connecting wire and a grounding wire clamp, wherein the shell is arranged on the shell; the voltage and current monitoring device is fixed in the shell, the alternating current motor is fixed at the bottom of the shell, the current limiting resistor is driven by the speed reducer and the gear transmission unit to move up and down in an inner chute of the insulating arc extinguishing protective cover, and the bottom end of the current limiting resistor is connected with the grounding wire clamp when moving to the bottom grounding disk; the top end of the current limiting resistor and the voltage and current monitoring device are respectively connected with the tested object through insulated connecting wires. The device replaces the manual discharging process by using machinery, and the quick discharging to the ground is realized by moving the resistor with the metal contact up and down in the device by the motor. The risk of manual discharge is reduced, and quick and efficient discharge is realized. The safe use of test equipment is ensured.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a rapid direct-current voltage-withstanding discharging device.
Background
The telescopic high-voltage discharging rod discharges the charges accumulated on the sample to the ground, and has the advantages of convenient carrying, convenience, flexibility, small volume and light weight. The defect is that when the direct current voltage-resistant equipment is used for carrying out voltage resistance on a test product with higher voltage-resistant grade in electrical engineering, the required test voltage is too high, so that a certain amount of charge stored in the cable can be stored for a longer time when the voltage resistance is longer, and the working efficiency is greatly reduced.
Disclosure of Invention
Because the prior art has the defects, the utility model provides a rapid direct current voltage-withstanding discharging device, so as to solve the problem that the prior manual discharging of a test product has potential safety hazard.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a rapid direct-current withstand voltage discharging device comprises a shell, a voltage and current monitoring device, an alternating-current motor, a speed reducer, a gear transmission unit, an insulating arc extinguishing protective cover, a current limiting resistor, a bottom grounding disc, an insulating connecting wire and a grounding wire clamp; the voltage and current monitoring device is fixed in the shell, the alternating current motor is fixed at the bottom of the shell, the current limiting resistor is driven by the speed reducer and the gear transmission unit to move up and down in an inner chute of the insulating arc extinguishing protective cover, and the bottom end of the current limiting resistor is connected with the grounding wire clamp when moving to the bottom grounding disk; the top end of the current limiting resistor and the voltage and current monitoring device are respectively connected with the tested object through insulated connecting wires.
A starting button, a resetting button and a stopping button are arranged on the shell, and the starting button controls the alternating current motor to rotate forward to drive the current limiting resistor to move downwards; the reset button controls the alternating current motor to reverse to drive the current limiting resistor to move upwards; the stop button is used for controlling the alternating current motor to stop in emergency.
The upper end and the lower end of the side wall of the insulating arc extinguishing protective cover are respectively provided with a top proximity limit switch and a bottom proximity limit switch; when the current limiting resistor reaches any one of the proximity limit switches, the alternating current motor stops running.
When the value of the voltage and current monitoring device is displayed as 0, a reset button is operated.
The buttons are connected with contacts of the contactor, and coils of the contactor are connected with the control end of the alternating current motor.
The coil of the contactor is correspondingly connected with a status indicator lamp of an alternating current motor control button.
The status indicator lamp is arranged on the shell.
The bottom of the current-limiting resistor is provided with a metal contact.
The top end of the current limiting resistor and the voltage and current monitoring device are connected with the measured object through an insulated wire with an alligator clip.
Compared with the prior art, the utility model has the following advantages or beneficial effects:
1. the device replaces the manual discharging process by using machinery, and the quick discharging to the ground is realized by moving the resistor with the metal contact up and down in the device by the motor.
2. When the high-voltage equipment is voltage-resistant, the risk of manual discharge is reduced, and quick and efficient discharge is realized.
3. The manpower and material resources are saved, and the rapid discharge to the ground is realized under the condition of protecting equipment and personnel safety. The safe use of test equipment is ensured.
Drawings
The utility model and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like numbers refer to like parts throughout. The drawings may not be to scale, emphasis instead being placed upon illustrating the principles of the utility model.
Fig. 1 is an electrical connection diagram of a discharge device according to the present utility model.
Fig. 2 is a schematic structural diagram of a discharge device according to the present utility model.
Fig. 3 is an equivalent circuit diagram of the discharge device of the present utility model.
Wherein, 1-a current limiting resistor; 2-metal contacts; 3-lifting the sliding resistance track; 4-an insulating arc extinguishing protective cover; 5-a gear drive shaft; 6-speed reducer.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
In the debugging work of general equipment, we can carry out direct current withstand voltage experiment to the cable between the both ends equipment in order to verify cable insulation withstand voltage intensity, usually can store electric charge in the cable after this process ends, this just needs to release remaining electric charge to ground in order to guarantee staff's safety, generally we use traditional discharging rod to discharge it, this kind of mode can appear waiting time long, the shortcoming of easy apparent improper damage instrument of operation appears, for this reason, the device of this scheme has been designed, when carrying out direct current withstand voltage experiment, we adopt a set of automatic discharging's device to carry out the operation of discharging, specifically as follows:
a rapid direct-current withstand voltage discharging device comprises a shell, a voltage and current monitoring device, an alternating-current motor, a speed reducer, a gear transmission unit, an insulating arc extinguishing protective cover, a current limiting resistor, a bottom grounding disc, an insulating connecting wire and a grounding wire clamp; the voltage and current monitoring device is fixed in the shell, the alternating current motor is fixed at the bottom of the shell, the current limiting resistor is driven by the speed reducer and the gear transmission unit to move up and down in an inner chute of the insulating arc extinguishing protective cover, and the bottom end of the current limiting resistor is connected with the grounding wire clamp when moving to the bottom grounding disk; the top end of the current limiting resistor and the voltage and current monitoring device are respectively connected with the tested object through insulated connecting wires.
1-3, a rapid direct current withstand voltage discharging device comprises a shell, a voltage and current monitoring device, an AC220v alternating current motor, a speed reducer, a gear transmission unit, an insulating arc extinguishing protective cover, a current limiting resistor 1, a bottom grounding disc, an insulating connecting wire and a grounding wire clamp; the voltage and current monitoring device is fixed inside the shell and is connected to the object to be measured through an insulated wire; the alternating current motor is fixed at the bottom of the shell, the insulated wire is connected with a motor power supply and a control loop, the current-limiting resistor is driven to move up and down in an internal chute (namely a lifting sliding resistor track 3) of the insulating arc-extinguishing protective cover 4 through a speed reducer 6 and a gear transmission shaft 5 of the gear transmission unit, and when the bottom end of the current-limiting resistor moves to a bottom grounding disc, the current-limiting resistor is connected with a grounding wire clamp to a grounding row to realize rapid grounding discharge; the top end of the current limiting resistor and the voltage and current monitoring device are respectively connected with the tested object through insulated connecting wires.
A starting button, a resetting button and a stopping button are arranged on the shell, and the starting button controls the alternating current motor to rotate forward to drive the current limiting resistor to move downwards; the reset button controls the alternating current motor to reverse to drive the current limiting resistor to move upwards; the stop button is used for controlling the alternating current motor to stop in emergency.
The upper end and the lower end of the side wall of the insulating arc extinguishing protective cover are respectively provided with a top proximity limit switch and a bottom proximity limit switch; when the current limiting resistor reaches any one of the proximity limit switches, the alternating current motor stops running.
After the start button is operated, the current limiting resistor moves to the bottom proximity switch motor to stop running, and when the value of the voltage and current monitoring device is observed to be 0, the current limiting resistor moves upwards to the top proximity switch through the reset button to stop running.
The buttons are connected with contacts of the contactor, and coils of the contactor are connected with the control end of the alternating current motor.
The coil of the contactor is correspondingly connected with a status indicator lamp of an alternating current motor control button.
The status indicator lamp is arranged on the shell.
The bottom end of the current limiting resistor is provided with a metal contact 2.
The top end of the current limiting resistor and the voltage and current monitoring device are connected with the measured object through an insulated wire with an alligator clip.
The working process of the alternating current motor in the device is as follows:
when the forward rotation button SB1 is pressed, the contactor KM1 starts the button coil to obtain electricity, the alternating current motor starts forward rotation, and the resistor is dragged to move downwards through the mechanical transmission device; when the metal contact collides with a travel switch SQ1 (namely a bottom proximity switch) fixed at the bottom position, the normally closed contact is disconnected, the coil of the contactor KM1 is released after power failure, and the motor stops rotating after power failure;
when the reset button SB2 is pressed, the coil of the contactor KM2 is electrified and self-locked, the motor is reversed, and the dragging resistor moves upwards; when the metal contact collides with the travel switch SQ2 (namely the top proximity switch) fixed at the top position, the normally closed contact is disconnected, the coil of the contactor KM2 is released after power failure, and the AC motor stops running after power failure.
The stop button may be operated when an emergency situation occurs.
The using method of the device is as follows:
and step 1, placing the pressure-resistant equipment according to requirements.
And 2, stably placing the quick direct-current voltage-resistant discharging device with a grounding end and connecting the quick direct-current voltage-resistant discharging device with a grounding wire, connecting the high-voltage input side to a tested article by using an insulated wire with a crocodile clip, and accessing an AC220v power supply.
And 3, after the direct-current voltage-withstanding equipment is started, the discharging device is positioned at a disconnection and isolation position.
And step 4, after the start button is pressed after the voltage-withstanding equipment stops working, the green indicator lamp of the grounding discharge device is turned on, and the grounding device works at the moment.
And 5, slowly moving the resistor downwards along a chute designed in the insulating arc extinguishing protective cover, and reducing the resistor from large to small until the resistor is grounded.
And 6, when the value of the monitoring instrument of the voltage and the current is displayed as 0, operating a reset button.
And 7, operating the reset button resistor to move upwards along the designed track, and automatically stopping operation after reaching the top limiting device.
By adopting the design, the device can realize quick release of residual charges on a test sample by moving the current-limiting resistor with the metal contact up and down on the chute track inside the insulating arc-extinguishing protective cover through the transmission unit of the motor, and is favorable for improving the working efficiency and ensuring the safety of staff under the condition of larger workload.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present application and in the foregoing figures, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The related circuits, electronic components and modules are all in the prior art, and can be completely implemented by those skilled in the art, and needless to say, the protection of the present application does not relate to improvements of software and methods.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
It is to be understood that the utility model is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or modifications to equivalent embodiments without departing from the scope of the technical solution of the present utility model, using the methods and technical contents disclosed above, without affecting the essential content of the present utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (9)
1. A fast direct current withstand voltage discharging device is characterized in that: the device comprises a shell, a voltage and current monitoring device, an alternating current motor, a speed reducer, a gear transmission unit, an insulating arc extinguishing protective cover, a current limiting resistor, a bottom grounding disc, an insulating connecting wire and a grounding wire clamp; the voltage and current monitoring device is fixed in the shell, the alternating current motor is fixed at the bottom of the shell, the current limiting resistor is driven by the speed reducer and the gear transmission unit to move up and down in an inner chute of the insulating arc extinguishing protective cover, and the bottom end of the current limiting resistor is connected with the grounding wire clamp when moving to the bottom grounding disk; the top end of the current limiting resistor and the voltage and current monitoring device are respectively connected with the tested object through insulated connecting wires.
2. The rapid direct current withstand voltage discharging device according to claim 1, wherein: a starting button, a resetting button and a stopping button are arranged on the shell, and the starting button controls the alternating current motor to rotate forward to drive the current limiting resistor to move downwards; the reset button controls the alternating current motor to reverse to drive the current limiting resistor to move upwards; the stop button is used for controlling the alternating current motor to stop in emergency.
3. The rapid direct current withstand voltage discharging device according to claim 2, wherein: the upper end and the lower end of the side wall of the insulating arc extinguishing protective cover are respectively provided with a top proximity limit switch and a bottom proximity limit switch; when the current limiting resistor reaches any one of the proximity limit switches, the alternating current motor stops running.
4. The rapid direct current withstand voltage discharging device according to claim 2, wherein: when the value of the voltage and current monitoring device is displayed as 0, a reset button is operated.
5. The rapid direct current withstand voltage discharging device according to any one of claims 2 to 4, wherein: the buttons are connected with contacts of the contactor, and coils of the contactor are connected with the control end of the alternating current motor.
6. The rapid dc withstand voltage discharging apparatus according to claim 5, wherein: the coil of the contactor is correspondingly connected with a status indicator lamp of an alternating current motor control button.
7. The rapid direct current withstand voltage discharging device according to claim 6, wherein: the status indicator lamp is arranged on the shell.
8. The rapid direct current withstand voltage discharging device according to claim 1, wherein: the bottom of the current-limiting resistor is provided with a metal contact.
9. The rapid direct current withstand voltage discharging device according to claim 1, wherein: the top end of the current limiting resistor and the voltage and current monitoring device are connected with the measured object through an insulated wire with an alligator clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221926342.2U CN219162280U (en) | 2022-07-25 | 2022-07-25 | Quick direct current withstand voltage discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221926342.2U CN219162280U (en) | 2022-07-25 | 2022-07-25 | Quick direct current withstand voltage discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219162280U true CN219162280U (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221926342.2U Active CN219162280U (en) | 2022-07-25 | 2022-07-25 | Quick direct current withstand voltage discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219162280U (en) |
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2022
- 2022-07-25 CN CN202221926342.2U patent/CN219162280U/en active Active
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