CN219085123U - Urban rail transit high-voltage AC/DC combined electroscope rechecking device - Google Patents
Urban rail transit high-voltage AC/DC combined electroscope rechecking device Download PDFInfo
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- CN219085123U CN219085123U CN202223506798.6U CN202223506798U CN219085123U CN 219085123 U CN219085123 U CN 219085123U CN 202223506798 U CN202223506798 U CN 202223506798U CN 219085123 U CN219085123 U CN 219085123U
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- alternating current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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Abstract
The utility model relates to a high-voltage alternating-current and direct-current combined electricity testing and rechecking device for urban rail transit, which comprises a control circuit and an electricity testing circuit, wherein the control circuit adopts a low-voltage control circuit to control working voltage output, and the electricity testing circuit converts the working voltage into high-voltage alternating-current and direct-current output. Through the high-voltage alternating-current and direct-current combined electroscope device for urban rail transit, provided by the utility model, operators can directly perform electroscope re-inspection through the electroscope circuit, and through the control circuit, the electroscope re-inspection process of the electroscope is controlled, the operators do not need to open a high-voltage equipment cabinet door to perform electroscope re-inspection, the safety risk that interphase short circuit or electroscope drops due to insufficient electroscope space and conductor intervention at an interphase distance in the electroscope process faced by the traditional electroscope re-inspection method can be avoided, the operation efficiency is improved, the states and performances of all equipment are guaranteed to be good, the electric shock risk in the electroscope re-inspection process is eliminated, and the safety of the operators and the equipment is guaranteed.
Description
Technical Field
The utility model relates to the field of electric power, in particular to a high-voltage alternating-current and direct-current combined electricity testing and rechecking device for urban rail transit.
Background
The urban rail transit power supply system adopts a centralized power supply mode, namely at least 2 110/33kV main substations are built on each subway line, each main substation reduces 110kV power to 33kV through 2 110/33kV main transformers, and the power is distributed to traction substations and voltage reduction substations of subway stations (vehicle sections and control centers) through a 33kV medium-voltage ring network power supply network. And then the traction substation along the ring network is subjected to voltage reduction and rectification to obtain 1500V direct current for supplying power to the train.
Each voltage class related device needs to be subjected to regular overhaul test and maintenance, and normal operation of the device is ensured. Technical measures for ensuring safety before the operation of overhauling test and maintenance equipment are power failure, electricity inspection, grounding wire, hanging nameplate and installing protective grating.
At present, the method for testing electricity during maintenance is generally that an operator vertically and slowly approaches a metal contact electrode of an electroscope to a tested place, and once the electroscope emits sound and light signals, the electroscope indicates that the equipment is electrified. The mode of using electroscope contact requires that operating personnel are close to one side of high voltage for rechecking, namely after the electroscope is tested in an electroless area, rechecking is required to be performed on equipment with electricity, the electroscope is ensured to be tested in the electroless area after the electroscope is in good state before and after the electroscope is tested, the operating personnel are required to test the electroscope on the equipment with electricity in the electroless area, personal safety hazards exist in the rechecking of the electroscope on the equipment with electricity in the electrified area, and if misoperation occurs to the operating personnel, conductors are intervened at intervals to cause alternate short circuit due to easy discharging, and meanwhile, the falling risk of a detection part of the electroscope is likely to occur when the electroscope is tested at a transformer.
Disclosure of Invention
In order to overcome the technical defects, the utility model provides the high-voltage alternating-current and direct-current combined electricity testing and rechecking device for the urban rail transit, which can improve the safety of operators in electricity testing and rechecking on power supply equipment in urban rail transit overhauling or maintenance operation.
In order to solve the problems, the utility model is realized according to the following technical scheme:
an urban rail transit high-voltage alternating current-direct current combined electroscope device comprises:
the control circuit is used for outputting working voltage;
and the electricity checking circuit is connected with the control circuit and used for converting the working voltage into high-voltage alternating current or high-voltage direct current.
As an improvement of the scheme, the control circuit comprises a power supply module and a delay circuit module, wherein the delay circuit module is connected with the power supply module and the electroscope circuit and is used for controlling the output time of the working voltage.
As an improvement of the scheme, the electroscope circuit comprises a direct current driving module, an alternating current driving module, a first transformer and a second transformer, wherein the direct current driving module is connected with the delay circuit module and the first transformer and is used for converting working voltage into direct current to the first transformer, and the alternating current driving module is connected with the delay circuit module and the second transformer and is used for converting working voltage into alternating current to the second transformer.
As an improvement of the scheme, the control circuit further comprises an air switch, and the air switch is connected with the power supply module and the delay circuit module.
As an improvement of the scheme, the electroscope circuit further comprises a change-over switch, and the change-over switch is connected with the delay circuit module, the direct current driving module and the alternating current driving module.
As an improvement of the above scheme, the electroscope circuit further comprises a direct current binding post and an alternating current binding post, wherein the direct current binding post is connected with the first transformer, and the alternating current binding post is connected with the second transformer.
As an improvement of the above scheme, the control circuit further comprises a power output indicator lamp, and the power output indicator lamp is connected with the power module.
As an improvement of the scheme, the electroscope circuit further comprises a first high-voltage output indicator lamp and a second high-voltage output indicator lamp, wherein the first high-voltage output indicator lamp is connected with the direct-current driving module, and the second high-voltage output indicator lamp is connected with the alternating-current driving module.
As an improvement of the scheme, the power supply module is a constant voltage power supply.
As the improvement of above-mentioned scheme, urban rail transit high pressure alternating current-direct current combination tests electric retest device still includes control box and test box, control circuit locates in the control box, test electric circuit locates in the test box.
Compared with the prior art, the utility model has the following beneficial effects:
through the high-voltage alternating-current and direct-current combined electroscope device for urban rail transit, provided by the utility model, operators can directly perform electroscope reinspection through the electroscope circuit, and control the electroscope reinspection process through the control circuit, the operators do not need to open a high-voltage equipment cabinet door to perform electroscope reinspection, the safety risk that inter-phase short circuit or electroscope drops due to the fact that conductors are easy to discharge at inter-phase distances in the electroscope process in the traditional electroscope reinspection method can be avoided, the failure rate is reduced, the states and performances of all equipment are guaranteed to be good, the risk in the electroscope reinspection process is eliminated, and the safety of the operators is guaranteed.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a block diagram of an embodiment of a combined AC/DC electroscope for urban rail transit;
FIG. 2 is a block diagram of an AC/DC combined electroscope for urban rail transit according to another embodiment;
FIG. 3 is a schematic circuit diagram of an embodiment of a combined AC/DC electroscope for urban rail transit;
FIG. 4 is a block diagram of a control box according to an embodiment;
fig. 5 is a block diagram of a test box according to an embodiment.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first comparator may be referred to as a second comparator, and similarly, a second comparator may be referred to as a first comparator, without departing from the scope of the present application. Both the first comparator and the second comparator are comparators, but they are not the same comparator.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
In order to solve the potential safety hazard existing in the current power supply operation electricity test and recheck, the application discloses an urban rail transit high-voltage alternating current and direct current combined electricity test and recheck device which is used for eliminating the risk in the electricity test and recheck process and guaranteeing personnel safety.
In one embodiment, as shown in fig. 1, a high-voltage ac/dc combined electroscope rechecking device for urban rail transit comprises a control circuit 1, wherein the control circuit 1 is used for providing working voltage and controlling the test process of electroscope rechecking; and the electricity testing circuit 2 is connected with the control circuit 1, and is used for converting the working voltage provided by the control circuit 1 into high-voltage alternating current or high-voltage direct current, and completing electricity testing and rechecking test of the electroscope under the control of the electricity testing circuit 2.
In one embodiment, as shown in fig. 2, the control circuit 1 includes a power module 11 and a delay circuit module, where the power module 11 is configured to provide the working voltage, the power module 11 is a 9V power source and can output the working voltage of 9V, and the delay circuit module is connected with the power module 11 and the electroscope circuit 2, and the delay circuit module may be an RC delay control circuit 1, a 555 delay circuit, a digital delay circuit, or the like, and is configured to control output time of the working voltage.
Specifically, as shown in fig. 3, the delay circuit includes a delay relay KT, a switch-off button SB1 and a switch-on button SB2, wherein an input end of the switch-off button SB1 is connected with an anode of the power module 11, an output end of the switch-off button SB1 is connected with an input end of the switch-on button SB2, an output end of the switch-on button SB2 is connected with an input end of the electroscope circuit 2, and the delay relay KT is connected with the switch-on button SB1 and the switch-off button SB2, and is used for controlling the switch-on or switch-off of the switch-on button SB1 and the switch-off button SB2 after a set time interval, so as to control the output time of the working voltage.
In one embodiment, please continue to refer to fig. 3, the electroscope circuit 2 includes a dc driving module 21, an ac driving module 22, a first transformer T1 and a second transformer T2. A first input end of the dc driving module 21 is connected to an output end of the control circuit 1, a first output end and a second input end of the dc driving module 21 are connected to the first transformer T1, a second output end of the dc driving module 21 is connected to an input end of the control circuit 1, a control voltage output by the control circuit 1 converts the working voltage into a dc power through the dc driving module 21 and provides the dc power to the first transformer T1, and the first transformer T1 boosts the low-voltage dc power output by the dc driving module 21 into a high-voltage dc power and outputs the high-voltage dc power; the first input end of the ac driving module 22 is connected to the output end of the control circuit 1, the first output end and the second input end of the ac driving module 22 are connected to the second transformer T2, the second output end of the ac driving module 22 is connected to the input end of the control circuit 1, the control voltage output by the control circuit 1 converts the working voltage into ac power through the ac driving module 22 and provides the ac power to the second transformer T2, and the second transformer T2 boosts the low-voltage ac power output by the ac driving module 22 into high-voltage ac power and outputs the high-voltage ac power. The first transformer T1 and the second transformer T2 may be set correspondingly according to a voltage of a power supply device, for example, according to a device voltage of rail transit, the first transformer T1 may be set to output DC1500V correspondingly, and the second transformer T2 may be set to output AC110kV and AC33kV correspondingly to perform electroscope rechecking.
In one embodiment, referring to fig. 3, the control circuit 1 further includes an air switch QF, which is connected to the power module 11 and the delay circuit module, and is used for controlling the output of the power module 11.
In one embodiment, please continue to refer to fig. 3, the electroscope circuit 2 further includes a switch QS, one end of the switch QS is connected to the output end of the control circuit 1, the first input end of the dc driving module 21 and the first input end of the ac driving module 22, the other end of the switch QS is connected to the input end of the control circuit 1, the second output end of the dc driving module 21 and the second output end of the ac driving module 22, and the switch QS is used to selectively input the working voltage to the dc driving module 21 for dc driving output, or selectively input the working voltage to the ac driving module 22 for ac driving output.
In one embodiment, please continue to refer to fig. 3, the electroscope circuit 2 further includes a dc terminal and an ac terminal, where the dc terminal is connected to the first transformer T1, and is used for performing a high voltage dc electroscope test; the alternating current binding post is connected with the second transformer T2 and used for carrying out high-voltage alternating current electroscope retest.
In one embodiment, please continue to refer to fig. 3, the control circuit 1 further includes a power output indicator, and the power output indicator L1 is connected in parallel with the power module 11 and is used for displaying a power output state of the power module 11.
In one embodiment, please continue to refer to fig. 3, the electroscope circuit 2 further includes a first high-voltage output indicator lamp L2 and a second high-voltage output indicator lamp L3, wherein two ends of the first high-voltage output indicator lamp L2 are connected to a first input end and a second output end of the dc driving module 21, so as to display the working state of the dc driving module 21 when the working voltage is input to the dc driving module 21; the second high-voltage output indicator lamp L3 is connected to the first input end and the second output end of the ac driving module 22, and is configured to display the working state of the ac driving module 22 when the working voltage is input to the ac driving module 22.
In one embodiment, the power module 11 is a constant voltage power supply, and the constant voltage power supply can provide a stable output working voltage to provide an accurate working voltage for the first transformer T1 and the second transformer T2 to perform standard boost output.
In one embodiment, the urban rail transit high-voltage alternating current-direct current combined electricity test device further comprises a control box and an electricity test box. As shown in fig. 4 and 5, the operation panel of the test box and the operation panel of the control box are respectively shown, wherein the test box is connected with the control box, the control circuit 1 is arranged in the control box, and the test circuit 2 is arranged in the test box. The control box is provided with a power output indicator lamp L1, an air switch QF, a closing button SB1, an opening button SB2 and a delay relay KT which correspond to the control circuit 1; the test box is provided with a first high-voltage output indicator lamp L2, a second high-voltage output indicator lamp L3, a change-over switch QS, a direct-current binding post and an alternating-current binding post which correspond to the test circuit 2.
When the high-voltage alternating-current and direct-current combined electricity test and rechecking device for urban rail transit provided by the utility model is used, after the high-voltage alternating-current and direct-current combined electricity test and rechecking device is powered on, the power supply output indicator lamp L1 is turned on. At this time, the closing button SB1 is pressed, and the delay timer KT starts counting. An alternating current or direct current mode can be selected at the position of the change-over switch QS, the selected current flows through the corresponding driving plate to reach the step-up transformer, the step-up transformer raises the low voltage to a corresponding high voltage, and then a proper electroscope is selected for electroscope at the position of the alternating current or direct current electroscope column. The electroscope normally sends out sound and light signals, so that the electroscope can be used normally. After the timer passes the set time, the timer KT is switched on, and the high-voltage AC/DC combined electricity testing and rechecking device is automatically switched off. After the power is tested in the no-power area, an operator turns on the power supply of the high-voltage AC/DC combined power testing and rechecking device, and the device is in a charged state. The electroscope is close to the AC or DC electroscope column, and the electroscope normally sends out sound and light signals, so that the electroscope can be normally used. And finally, carrying out electricity inspection in the non-electricity area to finish the whole electricity inspection step.
The utility model provides a high-voltage alternating-current and direct-current combined electricity test and recheck device for urban rail transit, which takes a DC9V battery as a power supply, adopts a low-voltage control circuit and is locked by a time relay. The high voltage and direct current output by the device can meet the working voltage required by the electroscope, and operators can freely switch the high voltage alternating current or the high voltage direct current according to the electroscope requirement. The operation personnel can directly pass through the electricity checking circuit 2 tests the electricity of electroscope and tests the process to the electricity checking of electroscope through the control circuit 1, and the operation personnel need not to open the high voltage equipment cabinet door and tests the electricity of electroscope and tests the process, can avoid the safety risk that the traditional electricity checking method faces to test that the electricity checking space is insufficient and the inter-phase distance has the conductor to intervene and easily discharge to cause inter-phase short circuit or the electroscope drops, promotes the operating efficiency, ensures that each equipment state and performance are good, eliminates the electric shock risk of testing the electricity testing process, and ensures personnel and equipment safety.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but rather is intended to cover any and all modifications, equivalents, alternatives, and improvements within the spirit and principles of the present application.
Claims (10)
1. The utility model provides an urban rail transit high voltage alternating current-direct current combination electroscope device which characterized in that includes:
the control circuit is used for outputting working voltage;
and the electricity checking circuit is connected with the control circuit and used for converting the working voltage into high-voltage alternating current or high-voltage direct current.
2. The urban rail transit high-voltage alternating current-direct current combined electricity test device according to claim 1, wherein the control circuit comprises a power supply module and a delay circuit module, and the delay circuit module is connected with the power supply module and the electricity test circuit and used for controlling the output time of the working voltage.
3. The urban rail transit high-voltage alternating current-direct current combined electricity testing and rechecking device according to claim 2, wherein the electricity testing circuit comprises a direct current driving module, an alternating current driving module, a first transformer and a second transformer, wherein the direct current driving module is connected with the delay circuit module and the first transformer and is used for converting the working voltage into direct current to the first transformer, and the alternating current driving module is connected with the delay circuit module and the second transformer and is used for converting the working voltage into alternating current to the second transformer.
4. The urban rail transit high-voltage alternating current-direct current combined electricity test device according to claim 2, wherein the control circuit further comprises an air switch, and the air switch is connected with the power supply module and the delay circuit module.
5. The urban rail transit high-voltage alternating current-direct current combined electricity testing and rechecking device according to claim 3, wherein the electricity testing circuit further comprises a change-over switch, and the change-over switch is connected with the delay circuit module, the direct current driving module and the alternating current driving module.
6. The urban rail transit high-voltage alternating current-direct current combined electroscope device according to claim 3, wherein the electroscope circuit further comprises a direct current binding post and an alternating current binding post, the direct current binding post is connected with the first transformer, and the alternating current binding post is connected with the second transformer.
7. The urban rail transit high-voltage alternating current-direct current combined electricity test device according to claim 2, wherein the control circuit further comprises a power output indicator lamp, and the power output indicator lamp is connected with the power module.
8. The urban rail transit high-voltage alternating current-direct current combined electricity testing and rechecking device according to claim 3, wherein the electricity testing circuit further comprises a first high-voltage output indicating lamp and a second high-voltage output indicating lamp, the first high-voltage output indicating lamp is connected with the direct current driving module, and the second high-voltage output indicating lamp is connected with the alternating current driving module.
9. The urban rail transit high-voltage alternating current-direct current combined electricity test device according to claim 2, wherein the power supply module is a constant-voltage power supply.
10. The urban rail transit high-voltage ac/dc combined electricity test and recheck device according to any one of claims 1 to 9, further comprising a control box and an electricity test box, wherein the control circuit is arranged in the control box, and the electricity test circuit is arranged in the electricity test box.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211299815.5A CN115469258A (en) | 2022-10-24 | 2022-10-24 | Urban rail transit high pressure alternating current-direct current combination electroscopy device |
| CN2022112998155 | 2022-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219085123U true CN219085123U (en) | 2023-05-26 |
Family
ID=84337718
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211299815.5A Withdrawn CN115469258A (en) | 2022-10-24 | 2022-10-24 | Urban rail transit high pressure alternating current-direct current combination electroscopy device |
| CN202223506798.6U Active CN219085123U (en) | 2022-10-24 | 2022-12-26 | Urban rail transit high-voltage AC/DC combined electroscope rechecking device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211299815.5A Withdrawn CN115469258A (en) | 2022-10-24 | 2022-10-24 | Urban rail transit high pressure alternating current-direct current combination electroscopy device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115469258A (en) |
-
2022
- 2022-10-24 CN CN202211299815.5A patent/CN115469258A/en not_active Withdrawn
- 2022-12-26 CN CN202223506798.6U patent/CN219085123U/en active Active
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| Publication number | Publication date |
|---|---|
| CN115469258A (en) | 2022-12-13 |
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