CN215340206U - Switch testing device - Google Patents
Switch testing device Download PDFInfo
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- CN215340206U CN215340206U CN202121013031.2U CN202121013031U CN215340206U CN 215340206 U CN215340206 U CN 215340206U CN 202121013031 U CN202121013031 U CN 202121013031U CN 215340206 U CN215340206 U CN 215340206U
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Abstract
The utility model provides a switch testing device, which comprises a controller, a first testing box body and a second testing box body, wherein a transformer, a current collector and a voltage collector are arranged in the first testing box body, a reactor electrically connected with the output end of a switch to be tested is arranged in the second testing box body, the reactor is connected with the controller, the transformer comprises a primary side electrically connected with an external power supply and a secondary side electrically connected with the input end of the switch to be tested, one end of the current collector is electrically connected with the secondary side, and the other end of the current collector is connected with the controller; one end of the voltage collector is electrically connected with the secondary side, and the other end of the voltage collector is connected with the controller. The utility model provides different analog voltages and analog currents for the switch to be tested, thereby realizing the analog impact loading test of the switch to be tested, improving the detection predictability and accuracy, and reducing the maintenance cost and the maintenance time.
Description
Technical Field
The utility model relates to the technical field of electricity, in particular to a switch testing device.
Background
The existing underground coal mine power supply system adopts a movable transformer and a combined switch to supply power for various underground equipment, along with the development of an automatic coal mining technology, higher requirements are put forward on the continuity, reliability and safety of mine power supply, the existing underground coal mine combined switch still frequently breaks down when entering a well after no-load detection is qualified, some control modules can be replaced in a short time, but the replacement of all electrical elements in a switch main control loop is time-consuming and labor-consuming underground, and certain potential safety hazards also exist.
At present, a three-phase large current generator is generally adopted to provide a simulation test power supply for a switch, the generator is firstly connected to the input side of the switch, then the current is gradually adjusted to a rated current to carry out a simulation loading test on the switch, if short circuit or electric leakage occurs, the three-phase large current generator trips, and the test is finished.
However, the existing three-phase large current generator can only provide a test power supply, tests the switch by adopting a test mode of gradually increasing to rated current, can detect the electric element or the connection part with a fault in the main circuit of the switch only when the switch discharges to generate short circuit or electric leakage, has a control mode which is the most basic electric control mode and is not intelligent control, cannot completely simulate the real state of the switch in operation, cannot monitor the real-time state of each element in the main circuit, cannot test the weak link in the main circuit of the switch, and can greatly improve the maintenance cost and the maintenance time by replacing the elements in the main circuit of the switch after the elements are damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a switch testing device, which realizes the simulation impact loading test of a switch to be tested, improves the detection predictability and accuracy, and reduces the maintenance cost and the maintenance time.
The technical scheme of the utility model provides a switch testing device, which comprises a controller, a first testing box body and a second testing box body, wherein a transformer, a current collector and a voltage collector are arranged in the first testing box body, a reactor electrically connected with the output end of a switch to be tested is arranged in the second testing box body, the reactor is connected with the controller, the transformer comprises a primary side electrically connected with an external power supply and a secondary side electrically connected with the input end of the switch to be tested,
one end of the current collector is electrically connected with the secondary side, and the other end of the current collector is connected with the controller;
one end of the voltage collector is electrically connected with the secondary side, and the other end of the voltage collector is connected with the controller.
Further, still include a plurality of settings at the temperature sensor of the monitoring point that awaits measuring of the switch that awaits measuring, temperature sensor with the controller is connected.
Furthermore, the monitoring point to be tested comprises an input socket wiring terminal, two sides of a main isolation wiring terminal, two sides of a vacuum contactor wiring terminal and an output socket wiring terminal.
Furthermore, a fault prompting lamp connected with the controller is arranged on the first test box body.
Further, the reactor is a three-phase reactor and further comprises a three-phase contactor, one end of the three-phase contactor is electrically connected with the reactor, and the other end of the three-phase contactor is connected with the controller.
Furthermore, the quantity of three-phase contactor is three, be equipped with on the first test box with the corresponding current gear test control of three-phase contactor, the one end of current gear test control with the controller is connected, the other end of current gear test control with the three-phase contactor electricity is connected.
Furthermore, a three-phase current display screen corresponding to the three-phase contactor is arranged on the second test box body, and the three-phase current display screen is electrically connected with the current collector.
Furthermore, a touch screen connected with the controller is further arranged on the first test box body, and the fault prompting lamp and the current gear test control are arranged on the touch screen.
Furthermore, a power supply starting button and an emergency stop button are further arranged on the first testing box body.
Furthermore, an operation indicator lamp is further arranged on the first test box body.
After adopting above-mentioned technical scheme, have following beneficial effect: the secondary side of the transformer is electrically connected with the input end of the switch to be tested, the reactor is electrically connected with the output end of the switch to be tested, the switch to be tested forms a closed loop, a voltage collector and a current collector are arranged on the secondary side of the transformer, during testing, the controller regulates the output voltage and the current of the transformer according to the voltage and the current respectively collected by the voltage collector and the current collector, different analog voltages and analog currents are provided for the switch to be tested, thereby realizing the simulation impact loading test on the switch to be tested, the recessive fault point of the switch to be tested can be quickly detected through the temperature sensor, the damage of the switch to be tested to each component in the testing process is avoided, the detection predictability and the accuracy are improved, and the maintenance cost and the maintenance time are reduced.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a schematic structural diagram of a switch testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the first test box shown in FIG. 1;
FIG. 3 is a schematic structural view of a second test chamber shown in FIG. 1;
fig. 4 is a schematic structural diagram of the touch screen shown in fig. 2.
Reference numerals:
11-a controller; 12-a first test chamber; 121-a transformer; 122-a current collector; 123-voltage collector; 124-fault warning light; 125-current gear test control; 126-touch screen; 1261-primary current display unit; 1262-secondary current display unit; 1263-primary voltage display unit; 127-power on button; 128-scram button; 129-running indicator light; 13-a second test box; 131-a reactor; 132-a three-phase contactor; 133-three-phase current display screen; 14-a temperature sensor; 20-switch to be tested.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as being all of the present invention or as defining or limiting the technical solutions of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1-3, the switch testing device provided by the present invention includes a controller 11, a first testing box 12 and a second testing box 13, wherein a transformer 121, a current collector 122 and a voltage collector 123 are disposed in the first testing box 12, a reactor 131 electrically connected to an output terminal of a switch 20 to be tested is disposed in the second testing box 13, the reactor 131 is connected to the controller 11, the transformer 131 includes a primary side electrically connected to an external power source and a secondary side electrically connected to an input terminal of the switch 20 to be tested,
one end of the current collector 122 is electrically connected with the secondary side, and the other end of the current collector 122 is connected with the controller 11;
one end of the voltage collector 123 is electrically connected to the secondary side, and the other end of the voltage collector 123 is connected to the controller 11.
The switch 20 to be tested in this embodiment is mainly a combination switch.
The switch testing device provided by the utility model mainly comprises a controller 11, a transformer 121, a current collector 122, a voltage collector 123 and a reactor 131.
The transformer 121 is configured to provide a voltage to the switch 20 to be tested, and the transformer 121 includes a primary side and a secondary side, where the primary side is electrically connected to the external power supply and the secondary side is electrically connected to the input terminal of the switch 20 to be tested.
The reactor 131 is used for limiting the short-circuit current for the switch 20 to be tested, the reactor 131 is electrically connected with the output end of the switch 20 to be tested, and the transformer 121 and the reactor 131 enable the switch 20 to be tested to form a closed loop.
The current collector 122 is configured to collect a current on the secondary side of the transformer 121 and transmit the current to the controller 11. The voltage collector 123 is configured to collect a voltage on the secondary side of the transformer 121 and transmit the voltage to the controller 11.
Preferably, the current collector 122 is a current transformer, and the voltage collector 123 is a voltage transformer.
The controller 11 is configured to adjust the output voltage of the transformer 121 and the test gear output current of the reactor 131 according to the current and voltage respectively collected by the current collector 122 and the voltage collector 123, for example, change the short-circuit current on the secondary side of the transformer 121 by changing the number of turns of the reactor 131, and provide different analog voltages and analog currents for the switch 20 to be tested, so as to implement an analog impact loading test on the switch to be tested, improve the detection predictability and accuracy, and reduce the maintenance cost and the maintenance time.
Preferably, the device further comprises an alarm prompting unit, the alarm prompting unit is connected with the controller 11, and when the controller 11 judges that the current of the current collector 122 exceeds a preset current threshold, the controller 11 controls the alarm prompting unit to perform alarm prompting, so as to prompt a user.
The controller 11 may be a Programmable Logic Controller (PLC) or other independent electronic chip with processing capability.
The reference of the switch 20 to be tested is only for convenience of description, and the switch 20 to be tested is not a structure to be protected by the present invention.
According to the switch testing device provided by the utility model, the secondary side of the transformer is electrically connected with the input end of the switch to be tested, the reactor is electrically connected with the output end of the switch to be tested, so that the switch to be tested forms a closed loop, and the secondary side of the transformer is provided with the voltage collector and the current collector.
In one embodiment, the system further comprises a plurality of temperature sensors 14 arranged at monitoring points to be tested of the switch 20 to be tested, and the temperature sensors 14 are connected with the controller 11.
The number of the temperature sensors 14 is related to the number of the monitoring points to be tested of the switch 20 to be tested, and the number of the temperature sensors 14 can be set according to the requirement of a user.
Preferably, the number of temperature sensors 14 is four.
In one embodiment, in order to further improve the detection accuracy and the test efficiency, the monitoring point to be tested comprises an input socket connecting terminal, two sides of a main isolation connecting terminal, two sides of a vacuum contactor connecting terminal and an output socket connecting terminal.
In one embodiment, as shown in FIG. 4, the first testing chamber 12 is provided with a fault indicator 124 connected to the controller 11.
The fault indicator light 124 corresponds to the temperature sensor 14, when the controller 11 determines that the temperature of the monitoring point to be detected exceeds the preset temperature threshold, the controller 11 controls the fault indicator light 124 corresponding to the monitoring point to be detected to be turned on, otherwise, the fault indicator light is not turned on, so that the user can be reminded in time.
In one embodiment, the reactor 131 is a three-phase reactor, and further includes a three-phase contactor 132, one end of the three-phase contactor 132 is electrically connected to the reactor 131, and the other end of the three-phase contactor 132 is connected to the controller 11.
The three-phase contactor 132 is electrically connected to a main contact connection line of the reactor 131, and the three-phase contactor 132 is used for changing the number of turns of the reactor 131 and adjusting the number of turns of the secondary side of the reactor 131, thereby facilitating the change of the current magnitude at the output end of the switch 20 to be tested.
In one embodiment, as shown in fig. 4, the number of the three-phase contactors 132 is three, the first testing box 12 is provided with a current gear position testing control 125 corresponding to the three-phase contactors 132, one end of the current gear position testing control 125 is connected to the controller 11, and the other end of the current gear position testing control 125 is electrically connected to the three-phase contactors 132.
The number of current notch test controls 125 is also three, corresponding to the number of three-phase contactors 132. The current gear test control 125 is used for adjusting the number of turns of the reactor 131, so that the current of the reactor 131 can be switched at different test gears, and the test efficiency is further improved.
In one embodiment, as shown in fig. 3, the second testing box 13 is provided with a three-phase current display screen 133 corresponding to the three-phase contactor 132, and the three-phase current display screen 133 is electrically connected to the current collector 122.
The number of the three-phase current display screens 133 is also three, and the three-phase current display screens 133 are used for displaying the size of the three-phase current at the output end of the switch 20 to be tested, so that the observation and the test are convenient.
In one embodiment, as shown in fig. 4, for convenience of operation and observation, the first testing box 12 is further provided with a touch screen 126 connected with the controller 11, and the fault indicator light 124 and the current step position testing control 125 are arranged on the touch screen 126.
Preferably, the touch screen 126 is further provided with a primary current display unit 1261, a secondary current display unit 1262 and a primary voltage display unit 1263, the number of the secondary current display units 1262 is three, and the three secondary current display units 1262 are respectively used for displaying three current magnitudes of the output end of the switch 20 to be tested.
In one embodiment, as shown in FIG. 4, the first test housing 12 is further provided with a power start button 127 and an emergency stop button 128.
The power start button 127 is used for starting the power supply, connecting the external power supply and the transformer 121, and providing power for the switch test device.
The scram button 128 is used for controlling the switch testing device to stop running tests when the switch 20 to be tested is abnormal.
Among these, the power start button 127 and the scram button 128 are mechanical keys.
In one embodiment, as shown in FIG. 2, the first test chamber 12 is further provided with an operation indicator lamp 129.
The operation indicator lamp 129 is used for prompting the operation state of the switch testing device, so that the observation and the test are convenient.
Preferably, the operation indicator lamp 129 includes an operation indicator lamp and a stop indicator lamp.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the utility model. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (10)
1. A switch testing device is characterized by comprising a controller, a first testing box body and a second testing box body, wherein a transformer, a current collector and a voltage collector are arranged in the first testing box body, an electric reactor electrically connected with an output end of a switch to be tested is arranged in the second testing box body, the electric reactor is connected with the controller, the transformer comprises a primary side electrically connected with an external power supply and a secondary side electrically connected with an input end of the switch to be tested,
one end of the current collector is electrically connected with the secondary side, and the other end of the current collector is connected with the controller;
one end of the voltage collector is electrically connected with the secondary side, and the other end of the voltage collector is connected with the controller.
2. The switch test apparatus of claim 1, further comprising a plurality of temperature sensors disposed at points of monitoring of the switch under test, the temperature sensors being connected to the controller.
3. The switching test device of claim 2, wherein the monitoring points to be tested include input socket terminals, both sides of main isolation terminals, both sides of vacuum contactor terminals, output socket terminals.
4. The switch testing device according to claim 3, wherein a fault indicator light connected to the controller is provided on the first testing box.
5. The switching test device according to claim 4, wherein the reactor is a three-phase reactor, and further comprising a three-phase contactor, one end of the three-phase contactor being electrically connected to the reactor, and the other end of the three-phase contactor being connected to the controller.
6. The switch testing device according to claim 5, wherein the number of the three-phase contactors is three, a current gear testing control corresponding to the three-phase contactors is provided on the first testing box, one end of the current gear testing control is connected to the controller, and the other end of the current gear testing control is electrically connected to the three-phase contactors.
7. The switch testing device according to claim 6, wherein a three-phase current display screen corresponding to the three-phase contactor is arranged on the second testing box body, and the three-phase current display screen is electrically connected with the current collector.
8. The switch testing device according to claim 7, wherein a touch screen connected to the controller is further disposed on the first testing box, and the fault indicator light and the current step testing control are disposed on the touch screen.
9. The switch test apparatus of claim 8, wherein the first test housing further comprises a power start button and an emergency stop button.
10. The switch testing device of claim 9, wherein the first testing box is further provided with an operation indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013031.2U CN215340206U (en) | 2021-05-12 | 2021-05-12 | Switch testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013031.2U CN215340206U (en) | 2021-05-12 | 2021-05-12 | Switch testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215340206U true CN215340206U (en) | 2021-12-28 |
Family
ID=79598628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121013031.2U Active CN215340206U (en) | 2021-05-12 | 2021-05-12 | Switch testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215340206U (en) |
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2021
- 2021-05-12 CN CN202121013031.2U patent/CN215340206U/en active Active
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