CN216848022U - Thyristor trigger test device and system - Google Patents
Thyristor trigger test device and system Download PDFInfo
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- CN216848022U CN216848022U CN202220080460.XU CN202220080460U CN216848022U CN 216848022 U CN216848022 U CN 216848022U CN 202220080460 U CN202220080460 U CN 202220080460U CN 216848022 U CN216848022 U CN 216848022U
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Abstract
The utility model discloses a thyristor triggers testing arrangement and system. The thyristor trigger test device comprises a switch and an oscilloscope; the switch is used for controlling whether the first power supply end is conducted with the first output end and/or controlling whether the second power supply end is conducted with the second output end; the first channel of the oscilloscope is electrically connected with the switch, the first end of the second channel of the oscilloscope is electrically connected with the anode of the thyristor to be tested, the second end of the second channel is electrically connected with the cathode of the thyristor to be tested, the first end of the third channel of the oscilloscope is electrically connected with the control electrode of the thyristor to be tested, the second end of the third channel is electrically connected with the cathode of the thyristor to be tested, and the oscilloscope is used for detecting the voltage of the switch, the voltage between the anode and the cathode of the thyristor to be tested and the voltage between the control electrode and the cathode of the thyristor to be tested. The utility model discloses reached and detected single thyristor, can confirm the position of rectifier cabinet trouble, triggered the test to single thyristor, improved the test security.
Description
Technical Field
The embodiment of the utility model provides a relate to and detect technical field, especially relate to a thyristor triggers testing arrangement and system.
Background
When the excitation system rectifier cabinet needs to carry out a low-current test, if the main loop of the rectifier cabinet cannot be disconnected with an external circuit, the low-current test has risks, and a thyristor trigger test needs to be used for replacing the low-current test.
The existing thyristor triggering test is to detect the whole thyristor group, when the triggering abnormality is detected, the specific position of the fault is difficult to determine, and whether a single thyristor has a defect or not cannot be judged.
SUMMERY OF THE UTILITY MODEL
The utility model provides a thyristor triggers testing arrangement and system to the realization detects single thyristor, with the concrete position of confirming the rectifier cabinet trouble.
In a first aspect, an embodiment of the present invention provides a thyristor trigger test device, the thyristor trigger test device includes: a switch and an oscilloscope;
the first power supply end of the thyristor trigger test device is connected with a live wire, the second power supply end of the thyristor trigger test device is connected with a zero line, the first output end of the thyristor trigger test device is electrically connected with the anode of the tested thyristor, and the second output end of the thyristor trigger test device is electrically connected with the cathode of the tested thyristor; the switch is used for controlling whether the first power supply end is conducted with the first output end and/or controlling whether the second power supply end is conducted with the second output end;
the first channel of the oscilloscope is electrically connected with the switch, the first end of the second channel of the oscilloscope is electrically connected with the anode of the thyristor to be tested, the second end of the second channel is electrically connected with the cathode of the thyristor to be tested, the first end of the third channel of the oscilloscope is electrically connected with the control electrode of the thyristor to be tested, the second end of the third channel is electrically connected with the cathode of the thyristor to be tested, and the oscilloscope is used for detecting the voltage of the switch, the voltage between the anode and the cathode of the thyristor to be tested and the voltage between the control electrode and the cathode of the thyristor to be tested.
Optionally, the thyristor triggered test device further comprises an insulating housing;
the switch and the oscilloscope are positioned in the insulating shell.
Optionally, the insulating housing comprises a ground terminal;
the oscilloscope is connected with a grounding wire through the grounding terminal.
Optionally, the thyristor triggering test device further comprises a resistor; the resistor is positioned in the insulating shell;
the first end of the switch is electrically connected with a first power supply end of the thyristor trigger testing device, and the second end of the switch is electrically connected with a first output end of the thyristor trigger testing device through the resistor.
Optionally, the resistor comprises a thermistor.
Optionally, the thyristor triggering test device further comprises a display module; the display module is positioned in the insulating shell;
the display module is connected between the first power supply end and the second power supply end, and the display module is used for displaying the input voltage of the thyristor trigger testing device.
Optionally, the display module comprises an indicator light.
Optionally, the insulating housing comprises at least one heat dissipation vent.
Optionally, the switch comprises an over-current protection switch.
In a second aspect, the embodiment of the present invention further provides a thyristor trigger test system, where the thyristor trigger test system includes: the thyristor triggering test device of any of the first aspects, further comprising a trigger board;
the trigger plate is electrically connected with the control electrode of the tested thyristor, and the trigger plate is used for sending a trigger signal to the tested thyristor.
The utility model discloses a closed switch, switch on between the first power end of thyristor trigger testing arrangement and the first output, switch on between second power end and the second output for thyristor trigger testing arrangement supplies power for the thyristor under test, and the first passageway of oscilloscope detects the voltage of switch and is mains voltage, when the third passageway of oscilloscope detects trigger voltage, if the voltage that the second passageway of oscilloscope detected is close to 0, then show that the thyristor under test switches on, namely the thyristor under test switches on under trigger voltage, the thyristor under test normally works; if the voltage detected by the second channel of the oscilloscope is close to the power supply voltage, the tested thyristor is not conducted, and the tested thyristor is triggered abnormally, so that the test of a single tested thyristor is realized, and when the abnormal tested thyristor exists, accurate positioning can be carried out, so that the specific position of the fault of the rectifier cabinet can be determined, and the thyristor triggering test device has a simple structure, reduces circuits and improves the working efficiency. The utility model provides a detect whole thyristor group, when detecting to trigger when unusual, be difficult to confirm the concrete position of trouble, can't judge whether single thyristor has the problem of defect, reached and carried out the effect that detects to single thyristor to can confirm the concrete position of rectifier cabinet trouble, and trigger the test to single thyristor, even the rectifier cabinet major loop can not break off with external circuit, can not have the risk yet, improved the security of test.
Drawings
Fig. 1 is a schematic structural diagram of a thyristor trigger test device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another thyristor trigger testing apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another thyristor trigger testing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a thyristor trigger test system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a thyristor trigger test device provided by an embodiment of the present invention, referring to fig. 1, the thyristor trigger test device includes: a switch 101 and an oscilloscope 102; the first power supply end B1 of the thyristor trigger testing device is connected with a live wire, the second power supply end B2 of the thyristor trigger testing device is connected with a zero line, the first output end B3 of the thyristor trigger testing device is electrically connected with the anode A of the tested thyristor Q1, and the second output end B4 of the thyristor trigger testing device is electrically connected with the cathode K of the tested thyristor Q1; the switch 101 is used for controlling whether the first power supply terminal B1 is conducted with the first output terminal B3, and/or controlling whether the second power supply terminal B2 is conducted with the second output terminal B4; the first channel of the oscilloscope 102 is electrically connected with the switch 101, the first end of the second channel of the oscilloscope 102 is electrically connected with the anode a of the thyristor Q1 to be tested, the second end of the second channel is electrically connected with the cathode K of the thyristor Q1 to be tested, the first end of the third channel of the oscilloscope 102 is electrically connected with the control electrode G of the thyristor Q1 to be tested, the second end of the third channel is electrically connected with the cathode K of the thyristor Q1 to be tested, and the oscilloscope 102 is used for detecting the voltage of the switch 101, the voltage between the anode a and the cathode K of the thyristor Q1 to be tested, and the voltage between the control electrode G and the cathode K of the thyristor Q1 to be tested.
Specifically, when the rectifier cabinet needs to be detected, a thyristor trigger test device may be used to detect the approach of each thyristor in the rectifier cabinet, the thyristor trigger test device may obtain a power supply signal through a live line and a zero line, the power supply signal is derived from a mains supply, the power supply voltage may be 220V or 380V, and the first output end B3 and the second output end B4 of the thyristor trigger test device may supply power to the thyristor Q1 to be detected. The first channel of the oscilloscope 102 can detect the voltage of the switch 101, and when the switch 101 is closed, the first channel of the oscilloscope 102 can detect the power supply voltage; the third channel of the oscilloscope 102 can detect the voltage between the control electrode G and the cathode K of the thyristor Q1 to be tested, and when the thyristor Q1 to be tested receives the trigger signal, the third channel of the oscilloscope 102 can detect the trigger voltage of the thyristor Q1 to be tested; the second channel of the oscilloscope 102 can detect the voltage between the anode a and the cathode K of the thyristor Q1 to be tested, and can judge whether the thyristor Q1 to be tested is conducted or not according to the voltage between the anode a and the cathode K of the thyristor Q1 to be tested.
For example, when the test is performed, the switch 101 is closed, the first power supply end B1 of the thyristor trigger test device is connected to the first output end B3, and the second power supply end B2 is connected to the second output end B4, so that the thyristor trigger test device supplies power to the tested thyristor Q1, the first channel of the oscilloscope 102 detects that the voltage of the switch 101 is the power supply voltage, when the third channel of the oscilloscope 102 detects the trigger voltage, if the voltage detected by the second channel of the oscilloscope 102 is close to 0, it indicates that the tested thyristor Q1 is connected, that is, the tested thyristor Q1 is connected under the trigger voltage, and the tested thyristor Q1 works normally; if the voltage detected by the second channel of the oscilloscope 102 is close to the power supply voltage, the thyristor Q1 to be tested is not conducted, and the thyristor Q1 to be tested is triggered to be abnormal, so that the test of the single thyristor Q1 to be tested is realized, and when the abnormal thyristor Q1 to be tested exists, accurate positioning can be carried out, and the specific position of the fault of the rectifier cabinet can be determined. By using the thyristor trigger test device, the risk of a low-current test when the main loop of the rectifier cabinet cannot be disconnected with an external circuit is avoided, and the thyristor trigger test device has a simple structure, reduces circuits and improves the working efficiency; the test power supply is adopted for supplying power, so that the risk of using a fan power supply inside the rectifier cabinet for testing is reduced; the oscilloscope 102 can visually display the test voltage, can timely judge the conduction condition of the tested thyristor Q1, and improves the test convenience.
Optionally, the switch 101 may be, for example, a double-pole double-throw switch, a first terminal of the switch 101 is connected to the first power supply terminal B1 of the thyristor trigger test device, a second terminal of the switch 101 is connected to the first output terminal B3 of the thyristor trigger test device, a third terminal of the switch 101 is connected to the second power supply terminal B2 of the thyristor trigger test device, a fourth terminal of the switch 101 is connected to the second output terminal B4 of the thyristor trigger test device, and the switch 101 may control whether the first power supply terminal B1 is conducted with the first output terminal B3, and control whether the second power supply terminal B2 is conducted with the second output terminal B4; the switch 101 may also be a single-pole single-throw switch, a first end of the switch 101 is connected to the first power supply end B1 of the thyristor trigger test device, a second end of the switch 101 is connected to the first output end B3 of the thyristor trigger test device, and the switch 101 may control whether the first power supply end B1 is conducted with the first output end B3; alternatively, the switch 101 may be a single-pole single-throw switch, the first terminal of the switch 101 is connected to the second power source terminal B2 of the thyristor trigger test device, the second terminal of the switch 101 is connected to the second output terminal B4 of the thyristor trigger test device, and the switch 101 may control whether the second power source terminal B2 and the second output terminal B4 are conducted.
According to the technical scheme of the embodiment, by closing the switch, the first power supply end and the first output end of the thyristor trigger testing device are conducted, and the second power supply end and the second output end are conducted, so that the thyristor trigger testing device supplies power to the thyristor to be tested, the voltage detected by the first channel of the oscilloscope is the power supply voltage, when the third channel of the oscilloscope detects the trigger voltage, if the voltage detected by the second channel of the oscilloscope is close to 0, the thyristor to be tested is indicated to be conducted, namely the thyristor to be tested is conducted under the trigger voltage, and the thyristor to be tested normally works; if the voltage detected by the second channel of the oscilloscope is close to the power supply voltage, the tested thyristor is not conducted, and the tested thyristor is triggered abnormally, so that the test of a single tested thyristor is realized, and when the abnormal tested thyristor exists, accurate positioning can be carried out, so that the specific position of the fault of the rectifier cabinet can be determined, and the thyristor triggering test device has a simple structure, reduces circuits and improves the working efficiency. The technical scheme of this embodiment has solved and has detected whole thyristor group, when detecting to trigger when unusual, is difficult to confirm the concrete position of trouble, can't judge whether single thyristor has the problem of defect, has reached the effect of detecting single thyristor to can confirm the concrete position of rectifier cabinet trouble, and trigger the test to single thyristor, even the rectifier cabinet major loop can not break off with external circuit, also can not have the risk, has improved the security of test.
On the basis of the above technical solution, optionally, the switch 101 includes an overcurrent protection switch.
Specifically, the switch 101 includes an overcurrent protection switch, that is, the switch 101 has an overcurrent protection function, and when the current passing through the switch 101 is greater than a preset current, the switch 101 can be automatically turned off, so that the effect of protecting the thyristor trigger test device and the tested thyristor Q1 is achieved, and the test safety is further improved. In addition, the switch 101 may also have an overheat protection function, and when the temperature in the thyristor trigger test device is higher than a preset temperature, the switch 101 may be automatically turned off, so as to achieve the effect of protecting the thyristor trigger test device and the tested thyristor Q1.
Fig. 2 is a schematic structural diagram of another thyristor trigger testing apparatus provided in the embodiment of the present invention, and optionally, referring to fig. 2, the thyristor trigger testing apparatus further includes an insulating housing 103; the switch 101 and the oscilloscope 102 are located within an insulated housing 103.
Specifically, the thyristor triggering test device further comprises an insulating housing 103, and the insulating housing 103 can shield large current, so that the safety during testing is improved. The insulating housing 103 is, for example, transparent or partially transparent so that a tester can view the display screen of the oscilloscope 102 to facilitate viewing of the test voltage.
Alternatively, referring to fig. 2, the insulating housing 103 includes a ground terminal 1031; the oscilloscope 102 is connected to the ground line via the ground terminal 1031.
Specifically, one end of the ground terminal 1031 is connected to the ground of the oscilloscope 102, the other end of the ground terminal 1031 may be connected to a wire clamp, and may be connected to a ground wire through the wire clamp, and the ground wire may be, for example, a ground wire of a power supply, so that the oscilloscope 102 is connected to the ground wire through the ground terminal, and the waveform shown by the oscilloscope 102 may be more stable.
Optionally, referring to fig. 2, the thyristor triggered test device further comprises a resistor R1; the resistor R1 is positioned in the insulating shell 103; a first terminal of the switch 101 is electrically connected to the first power supply terminal B1 of the thyristor-triggered testing device, and a second terminal of the switch 101 is electrically connected to the first output terminal B3 of the thyristor-triggered testing device through a resistor R1.
Specifically, the resistor R1 has a voltage dividing effect, and when the thyristor Q1 is turned on, the voltage of the thyristor Q1 is small and close to 0, so that the resistor R1 can bear the applied power supply voltage, the effect of protecting the thyristor Q1 is achieved, and the safety of the test is further improved.
Alternatively, referring to fig. 2, the resistor R1 comprises a thermistor.
Specifically, the resistor R1 may include, for example, a thermistor, which is a positive temperature coefficient thermistor, and when the internal temperature of the thyristor triggering test device is higher than a preset temperature, the resistance value of the thermistor is larger, so that the connection between the first power supply terminal B1 and the first output terminal B3 is disconnected, and the effect of protecting the test device and the thyristor Q1 is achieved.
Optionally, referring to fig. 2, the thyristor triggered test device further comprises a display module 104; the display module 104 is located within the insulating housing 103; the display module 104 is connected between the first power source terminal B1 and the second power source terminal B2, and the display module 104 is used for displaying the input voltage of the thyristor triggering test device.
Specifically, the display module 104 is connected between the first power end B1 and the second power end B2, the display module 104 can indicate whether the first power end B1 and the second power end B2 are connected to the test power, when the first power end B1 is connected to the live wire and the second power end B2 is connected to the zero wire, the display module 104 is powered on, the indicator light of the display module 104 emits light, and the input voltage of the thyristor triggering test device can be displayed.
Optionally, referring to fig. 2, the display module 104 includes an indicator light.
Specifically, the display module 104 includes, for example, an indicator light, and when the first power terminal B1 is connected to the live wire and the second power terminal B2 is connected to the neutral wire, the indicator light is powered on to emit light, so as to indicate whether the first power terminal B1 and the second power terminal B2 are connected to the testing power, i.e., whether the thyristor triggering test device is connected to the testing power.
Fig. 3 is a schematic structural diagram of another thyristor trigger test apparatus provided in the embodiment of the present invention, optionally, referring to fig. 3, the insulating housing 103 includes at least one heat dissipation hole 1032.
Specifically, the insulating housing 103 may include at least one heat dissipation hole 1032, the heat dissipation hole 1032 may be located on a side surface of the insulating housing 103, or may be located on a top surface or a bottom surface of the insulating housing 103, which is not limited herein, and the shape of the heat dissipation hole 1032 may be circular, or may be other shapes, which is not limited herein. The heat dissipation hole 1032 can dissipate heat in the thyristor trigger test device, so that damage to the oscilloscope 102 or other devices caused by overhigh temperature in the thyristor trigger test device is avoided, and the effect of protecting the thyristor trigger test device is achieved. Fig. 3 shows a case including three heat dissipation holes 1031, but the present invention is not limited thereto.
Fig. 4 is a schematic structural diagram of a thyristor trigger test system according to an embodiment of the present invention, and referring to fig. 4, the thyristor trigger test system includes the thyristor trigger test apparatus 10 according to any of the above embodiments, and further includes a trigger board 20; the trigger board 20 is electrically connected with the control electrode G of the thyristor Q1 to be tested, and the trigger board 20 is used for sending a trigger signal to the thyristor Q1 to be tested.
Specifically, the trigger board 20 may send a trigger signal to the control electrode G of the thyristor Q1 to be tested, the oscilloscope 102 in the thyristor trigger testing apparatus 10 may detect a trigger voltage, and when the first channel of the oscilloscope 102 detects that the voltage of the switch 101 is the power supply voltage and the third channel of the oscilloscope 102 detects the trigger voltage, if the voltage detected by the second channel of the oscilloscope 102 is close to 0, it indicates that the thyristor Q1 to be tested is turned on, that is, the thyristor Q1 to be tested is turned on under the trigger voltage, and the thyristor Q1 to be tested normally operates; if the voltage detected by the second channel of the oscilloscope 102 is close to the power supply voltage, the thyristor Q1 to be tested is not conducted, and the thyristor Q1 to be tested is triggered to be abnormal, so that the test of the single thyristor Q1 to be tested is realized, and when the abnormal thyristor Q1 to be tested exists, accurate positioning can be carried out, and the specific position of the fault of the rectifier cabinet can be determined. By using the thyristor trigger test device, the risk of a low-current test when the main loop of the rectifier cabinet cannot be disconnected with an external circuit is avoided, and the thyristor trigger test device has a simple structure, reduces circuits and improves the working efficiency; the test power supply is adopted for supplying power, so that the risk of using a fan power supply inside the rectifier cabinet for testing is reduced; the oscilloscope 102 can visually display the test voltage, can timely judge the conduction condition of the tested thyristor Q1, and improves the test convenience.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A thyristor trigger test apparatus, comprising: a switch and an oscilloscope;
the first power supply end of the thyristor trigger test device is connected with a live wire, the second power supply end of the thyristor trigger test device is connected with a zero line, the first output end of the thyristor trigger test device is electrically connected with the anode of the tested thyristor, and the second output end of the thyristor trigger test device is electrically connected with the cathode of the tested thyristor; the switch is used for controlling whether the first power supply end is conducted with the first output end and/or controlling whether the second power supply end is conducted with the second output end;
the first channel of the oscilloscope is electrically connected with the switch, the first end of the second channel of the oscilloscope is electrically connected with the anode of the thyristor to be tested, the second end of the second channel is electrically connected with the cathode of the thyristor to be tested, the first end of the third channel of the oscilloscope is electrically connected with the control electrode of the thyristor to be tested, the second end of the third channel is electrically connected with the cathode of the thyristor to be tested, and the oscilloscope is used for detecting the voltage of the switch, the voltage between the anode and the cathode of the thyristor to be tested and the voltage between the control electrode and the cathode of the thyristor to be tested.
2. The thyristor triggered test device of claim 1, further comprising an insulating housing;
the switch and the oscilloscope are positioned in the insulating shell.
3. The thyristor triggered test device of claim 2, wherein the insulative housing comprises a ground terminal;
the oscilloscope is connected with a grounding wire through the grounding terminal.
4. The thyristor triggered test device of claim 2, further comprising a resistor; the resistor is positioned in the insulating shell;
the first end of the switch is electrically connected with a first power supply end of the thyristor trigger testing device, and the second end of the switch is electrically connected with a first output end of the thyristor trigger testing device through the resistor.
5. The thyristor triggered test device of claim 4, wherein the resistor comprises a thermistor.
6. The thyristor-triggered test device of claim 2, further comprising a display module; the display module is positioned in the insulating shell;
the display module is connected between the first power supply end and the second power supply end, and the display module is used for displaying the input voltage of the thyristor trigger testing device.
7. The thyristor-triggered test device of claim 6, wherein the display module comprises an indicator light.
8. The thyristor-triggered testing device of claim 2, wherein the insulating housing comprises at least one heat sink.
9. The thyristor triggered test device of claim 1, wherein the switch comprises an overcurrent protection switch.
10. A thyristor trigger test system comprising the thyristor trigger test apparatus of any one of claims 1 to 9, and further comprising a trigger board;
the trigger board is electrically connected with the control electrode of the tested thyristor, and the trigger board is used for sending a trigger signal to the tested thyristor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220080460.XU CN216848022U (en) | 2022-01-13 | 2022-01-13 | Thyristor trigger test device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220080460.XU CN216848022U (en) | 2022-01-13 | 2022-01-13 | Thyristor trigger test device and system |
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| CN216848022U true CN216848022U (en) | 2022-06-28 |
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| CN202220080460.XU Active CN216848022U (en) | 2022-01-13 | 2022-01-13 | Thyristor trigger test device and system |
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