CN210376575U - Withstand voltage insulation test control circuit and withstand voltage insulation test equipment - Google Patents
Withstand voltage insulation test control circuit and withstand voltage insulation test equipment Download PDFInfo
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- CN210376575U CN210376575U CN201921115152.0U CN201921115152U CN210376575U CN 210376575 U CN210376575 U CN 210376575U CN 201921115152 U CN201921115152 U CN 201921115152U CN 210376575 U CN210376575 U CN 210376575U
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Abstract
The utility model provides a withstand voltage insulation test control circuit and withstand voltage insulation test equipment, this circuit includes power input circuit, the voltage regulator, boost circuit, voltage output end, output voltage detection circuitry and insulation measurement circuit, power input circuit is connected with the input electricity of voltage regulator, the output of voltage regulator is connected with boost circuit's input electricity, boost circuit's output is connected with voltage output end electricity, output voltage detection circuitry is connected with boost circuit's output electricity, insulation measurement circuit is connected with voltage output end electricity. The device applies the circuit. Use the utility model discloses a withstand voltage insulation test control circuit simple structure, the security is high, job stabilization and maintenance convenience.
Description
Technical Field
The utility model relates to a high voltage withstand voltage test equipment technical field especially relates to a withstand voltage insulation test control circuit, still relates to the withstand voltage insulation test equipment who uses this withstand voltage insulation test control circuit.
Background
At present, high-voltage withstand voltage test equipment for carrying out high-voltage withstand voltage test on a low-voltage distribution panel of a ship has more product types and generally comprises an instrument desk controller and a step-up transformer. The boosting transformer generally uses an integrated oil immersed transformer as a main part. Because the requirements of the manufacturing process and the insulation grade of the transformer are high, the produced product is expensive, and the maintenance and inspection are inconvenient.
Disclosure of Invention
The utility model aims at providing a simple structure, the security is high, job stabilization and overhaul convenient withstand voltage insulation test control circuit.
The second purpose of the utility model is to provide a simple structure, the security is high, job stabilization and overhaul convenient withstand voltage insulation test equipment.
In order to realize above-mentioned first purpose, the utility model provides a withstand voltage insulation test control circuit includes power input circuit, the voltage regulator, boost circuit, voltage output end, output voltage detection circuitry and insulation measurement circuit, and the input and the power input circuit electricity of voltage regulator are connected, and the output of voltage regulator is connected with boost circuit's input electricity, and boost circuit's output is connected with voltage output end electricity, and output voltage detection circuitry is connected with boost circuit's output electricity, and insulation measurement circuit is connected with voltage output end electricity.
Therefore, the utility model discloses a withstand voltage insulation test control circuit utilizes the principle that transformer output series connection steps up to convert the low-tension electricity to high-tension electricity through using boost circuit. The high voltage is evenly distributed by a plurality of step-up transformers, and the highest output voltage of each step-up transformer is relatively low, so that the safety and the working stability of the transformer device are improved. And, because the utility model discloses step up transformer and electrical accessories that use are comparatively general, and it is very convenient to overhaul, simple structure, and the preparation is simple and easy to manufacturing cost has been reduced.
In a further scheme, the boosting circuit comprises a first preset number of boosting transformers, primary sides of all the boosting transformers are electrically connected with output ends of the voltage regulators, and secondary sides of all the boosting transformers are electrically connected in series.
Therefore, the primary sides of all the boosting transformers are electrically connected with the output end of the voltage regulator in the boosting circuit, the secondary sides of all the boosting transformers are connected in series, low-voltage electricity can be converted into high-voltage electricity, and then the secondary output voltages of all the boosting transformers are superposed to obtain higher high-voltage electricity, so that the usable step-down transformer can be a boosting transformer with lower secondary output voltage, the safety is improved, and the cost is reduced.
In a further scheme, the output voltage detection circuit comprises a step-down transformer bank and a voltmeter, the input end of the step-down transformer bank is electrically connected with the output end of the boosting circuit, and the output end of the step-down transformer bank is electrically connected with the voltmeter.
Therefore, the safety problem of monitoring the output voltage is considered, the step-down transformer group is installed by utilizing the step-down principle of the transformer to step down the output high-voltage electricity and then convey the reduced voltage electricity to the voltmeter, and therefore the voltmeter with a lower range can be used for measuring the high-voltage output, and the operation is safer.
In a further aspect, the set of step-down transformers includes a second predetermined number of step-down transformers, the primary windings of all step-down transformers are electrically connected in series, and the secondary windings of all step-down transformers are electrically connected in series.
Therefore, the step-down transformers in the step-down transformer bank are all connected in series, high voltage can be distributed by a plurality of step-down transformers, and therefore the used step-down transformers can be step-down transformers with lower primary input voltage, and therefore the cost of the step-down transformer bank is reduced.
In a further scheme, the withstand voltage insulation test control circuit further comprises a boost switch group, the number of the boost switches in the boost switch group is the same as that of the boost transformers, and the primary side of each boost transformer is electrically connected with the output end of the voltage regulator through one boost switch.
Therefore, by arranging a separate boosting switch for each boosting transformer, the number of the boosting transformers is conducted through the boosting switch group, the voltage output grade is selected, and the adjustable voltage range is widened. And moreover, when a certain step-up transformer fails or is damaged, the step-up transformer can be simply powered off and output in a short circuit mode, so that the normal use of other step-up transformers is guaranteed, and the normal work of equipment is not influenced.
In a further scheme, the insulation measuring circuit comprises an insulation detection switch and an insulation detection meter, the detection switch is electrically connected with the voltage output end, and the insulation detection switch is electrically connected with the insulation detection meter.
Therefore, the insulation detection switch and the insulation detection meter are arranged, equipment needing voltage resistance and insulation detection can be detected, meanwhile, the insulation detection switch is arranged, the conduction of the insulation detection meter is controlled, and the working safety of the insulation detection meter can be further guaranteed.
In a further scheme, the voltage withstand test control circuit further comprises a pressurization test switch circuit, and the output end of the booster circuit is electrically connected with the voltage output end through the pressurization test switch circuit.
Therefore, the output end of the booster circuit can ensure the safety of equipment needing voltage resistance and insulation detection through the pressurization test switch and the voltage output end.
In a further scheme, the voltage withstand insulation test control circuit further comprises a discharge circuit, and the discharge circuit is electrically connected with the voltage output end.
Therefore, by arranging the discharge circuit, the discharge operation can be carried out on equipment needing withstand voltage and insulation detection by using the discharge circuit during detection, and the detection efficiency is improved.
In a further scheme, the voltage-withstand insulation test control circuit further comprises a power input terminal and a protection switch group, and the input end of the voltage regulator is electrically connected with the power input terminal through the protection switch group.
Therefore, the protection switch group is arranged between the input end of the voltage regulator and the power input circuit, the voltage-withstand insulation test control circuit can be better protected, and the working stability of the circuit is improved.
In order to achieve the second objective, the utility model provides a voltage insulation test device, which comprises a casing and a voltage insulation test control circuit, wherein the voltage insulation test control circuit is arranged on the casing; the voltage-resistant insulation test control circuit is applied to the voltage-resistant insulation test control circuit.
It is thus clear that by the above scheme, the utility model discloses a withstand voltage insulation test control circuit converts the low-voltage electricity to high-voltage electricity through using boost circuit. The high voltage is evenly distributed by a plurality of step-up transformers, and the highest output voltage of each step-up transformer is relatively low, so that the safety and the working stability of the transformer device are improved. And, because the utility model discloses step up transformer and electrical accessories that use are comparatively general, and it is very convenient to overhaul, simple structure, and the preparation is simple and easy to manufacturing cost has been reduced.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the voltage withstand test control circuit of the present invention.
Fig. 2 is a view angle structure diagram of the voltage withstand test equipment of the present invention.
Fig. 3 is a structural diagram of another view angle of the embodiment of the voltage withstand test equipment of the present invention.
Fig. 4 is a structural diagram of a control panel in an embodiment of the voltage withstand test device of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Withstand voltage insulation test control circuit embodiment:
as shown in fig. 1, the utility model discloses a withstand voltage insulation test control circuit includes power input circuit 1, the voltage regulator 2, boost circuit 3, voltage output end 4, output voltage detection circuitry 5, insulation measurement circuit 6, pressurization test switch circuit 7 and discharge circuit 8, power input circuit 1 is connected with voltage regulator 2's input electricity, voltage regulator 2's output is connected with boost circuit 3's input electricity, boost circuit 3's output is connected with voltage output end 4 electricity through pressurization test switch circuit 7, output voltage detection circuitry 5 is connected with boost circuit 3's output electricity, insulation measurement circuit 6 is connected with voltage output end 4 electricity, discharge circuit 8 is connected with voltage output end 4 electricity.
In this embodiment, the power input circuit 1 is used for accessing an external power source, and the preferred external power source is a 220V ac power source. The voltage regulator 2 adopts a dry self-cooling voltage regulator to regulate the voltage input by the power input circuit 1 so as to achieve stepless voltage regulation output. The booster circuit 3 is used for boosting the voltage supplied by the regulator 2 so as to supply power to the device to be tested through the voltage output terminal 4. The output voltage detection circuit 5 is used for performing voltage amplitude measurement on the voltage at the voltage output end 4 so as to check the current output voltage amplitude of the voltage output end 4. The insulation measuring circuit 6 is used for performing insulation detection on the equipment to be detected.
The power input circuit 1 comprises a power input terminal 11 and a power protection switch group 12, and the input end of the voltage regulator 2 is electrically connected with the power input terminal 11 through the power protection switch group 12. The power protection switch group 12 includes a power protection switch 121, a key switch 122 and an emergency stop button switch 123, an input end of the power protection switch 121 is electrically connected with the power input circuit 1, an output end of the power protection switch 121 is electrically connected with an input end of the key switch 122, an output end of the key switch 122 is electrically connected with an input end of the emergency stop button switch 123, and an output end of the emergency stop button switch 123 is electrically connected with an input end of the voltage regulator 2. The power protection switch 121 is a well-known miniature air type power protection switch for automatically cutting off a path when a current exceeds a threshold value. The key switch 122 adopts a known key switch, and power can be supplied to a subsequent circuit when the key switch 122 is switched on, so that the power utilization safety is guaranteed. The emergency stop button switch 123 is a well-known button switch for manually cutting off the path between the power input circuit 1 and the subsequent circuit in case of emergency.
The booster circuit 3 includes a booster switch group 31 and a booster transformer group 32. The boost switch group 31 is provided with a first preset number of boost switches, the boost transformer group 32 is provided with a first preset number of boost transformers, the number of the boost switches is the same as that of the boost transformers, and the primary of each boost transformer is electrically connected with the output end of the voltage regulator 2 through one boost switch. The primary sides of all the boosting transformers are electrically connected with the output end of the voltage regulator, and the secondary sides of all the boosting transformers are connected in series. The first preset number can be set as required, in this embodiment, the step-up transformer set 32 includes six step-up transformers, all the step-up transformers have the same model, and each step-up transformer is a step-up transformer from 220V to 500V. Six step-up transformers of 220V to 500V are used in series to boost the voltage up to a high voltage of up to 3 KV. Each step-up transformer has a step-up switch for switching control, and the step-up switches conduct the corresponding step-up transformers, so as to control the conducting quantity of the step-up transformers, and enable the step-up transformer bank 32 to select and widen the adjustable voltage range by taking 500V as a grade.
The output voltage detection circuit 5 includes a step-down transformer bank 51 and a voltmeter 52, an input end of the step-down transformer bank 51 is electrically connected with an output end of the step-up circuit 3, and an output end of the step-down transformer bank 51 is electrically connected with the voltmeter 52. The step-down transformer set 51 includes a second predetermined number of step-down transformers, all the step-down transformers are connected in series at their primary sides, and all the step-down transformers are connected in series at their secondary sides. The second preset number can be set as required, in this embodiment, the step-down transformer set 51 includes six step-down transformers, all the step-down transformers have the same model, and each step-down transformer is a step-down transformer that changes from 500V to 50V. The six step-down transformers, the primary of which is connected in series and the secondary of which is connected in series, can convert the high voltage output by the step-up circuit 3 into a low voltage for the detection of the voltmeter 52.
The insulation measuring circuit 6 includes an insulation detecting switch 61 and an insulation detecting meter 62, the detecting switch 61 is electrically connected to the voltage output terminal 4, and the insulation detecting switch 61 is electrically connected to the insulation detecting meter 62. In this embodiment, a known insulation detection table is used as the insulation detection table 62.
The voltage-withstand insulation test control circuit further comprises a pressurization test switch circuit 7, and the pressurization test switch circuit 7 is electrically connected with the voltage output end 4. The pressurization test switch circuit 7 is used for switching on or off a path between the booster circuit 3 and the voltage output end 4, so as to perform pressurization test on the device to be tested. In this embodiment, the voltage test switch circuit 7 includes a double-pole single-gate switch K1, and the output terminal of the voltage boost circuit 32 is electrically connected to the voltage output terminal 4 through the double-pole single-gate switch K1. The double-pole single-gate switch K1 is used to control the on/off of the path of the voltage output from the voltage boosting circuit 3 to the voltage output terminal 4.
The voltage-withstand insulation test control circuit further comprises a discharge circuit 8, and the discharge circuit 8 is electrically connected with the voltage output end 4. The discharge circuit 8 is used for discharging when the device to be detected is detected. In this embodiment, the discharge circuit 8 includes a double-pole single-gate switch K2, two input terminals of the double-pole single-gate switch K2 are electrically connected to two electrodes of the voltage output terminal 4, respectively, and two output terminals of the double-pole single-gate switch K2 are shorted.
When the voltage-withstand insulation test control circuit works, the power input circuit 1 needs to be electrically connected with an external single-phase alternating-current power supply, and the voltage output end 4 is connected to the equipment to be detected. And (3) turning on the key switch 122, turning on the boost switch group 31, adjusting the voltage regulator 2 to adjust the voltage to 2.5KV, turning on the insulation detection meter 62, and entering a detection mode of the equipment to be detected. When the equipment to be detected is detected, firstly, the insulation resistance of the equipment to be detected is measured for 10 seconds, and the measurement is stopped for 2 seconds after the insulation value is obtained. And then, entering a pressurization process, conveying 2.5KV high voltage to equipment to be detected for voltage withstand test, inputting high voltage into the equipment to be detected for 1 minute, then performing discharge operation on the equipment to be detected, performing insulation detection for 10 seconds again after 5 seconds of discharge to obtain an insulation value after detection, and finally discharging for 5 seconds to complete the whole detection program. If special conditions are met, the emergency stop button switch 123 can be pressed to cut off the path between the power input circuit 1 and subsequent circuits, and the detection safety is ensured.
Withstand voltage insulation test equipment embodiment:
referring to fig. 2, fig. 3 and fig. 4, the utility model discloses a withstand voltage insulation test equipment includes casing 10 and withstand voltage insulation test control circuit, and withstand voltage insulation test control circuit sets up on casing 10, and withstand voltage insulation test control circuit uses the withstand voltage insulation test control circuit in the experimental control circuit embodiment of above-mentioned withstand voltage insulation.
The inner cavity of the housing 10 is provided with a circuit board 101, and the step-up transformer set 32 and the step-down transformer set 51 are arranged on the same side wall of the circuit board 101. The top of the housing 10 is also provided with a control panel 102, and the voltage regulator 2, the boost switch group 31, the voltmeter 52, the insulation detection meter 62, the key switch 122 and the emergency stop button switch 123 are arranged on the control panel 102.
Therefore, the utility model discloses a withstand voltage insulation test control circuit converts the low-voltage electricity to high-voltage electricity through using boost circuit. The high voltage is evenly distributed by a plurality of step-up transformers, and the highest output voltage of each step-up transformer is relatively low, so that the safety and the working stability of the transformer device are improved. And, because the utility model discloses step up transformer and electrical accessories that use are comparatively general, and it is very convenient to overhaul, simple structure, and the preparation is simple and easy to manufacturing cost has been reduced.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a withstand voltage insulation test control circuit which characterized in that: comprises that
Power input circuit, voltage regulator, boost circuit, voltage output end, output voltage detection circuitry and insulation measurement circuit, power input circuit with the input electricity of voltage regulator is connected, the output of voltage regulator with boost circuit's input electricity is connected, boost circuit's output with voltage output end electricity is connected, output voltage detection circuitry with boost circuit's output electricity is connected, insulation measurement circuit with voltage output end electricity is connected.
2. A withstand voltage insulation test control circuit according to claim 1, characterized in that:
the booster circuit comprises a first preset number of booster transformers, all the primary sides of the booster transformers are electrically connected with the output end of the voltage regulator, and all the secondary sides of the booster transformers are electrically connected in series.
3. A withstand voltage insulation test control circuit according to claim 2, characterized in that:
the booster circuit further comprises a booster switch group, the number of booster switches in the booster switch group is the same as that of the booster transformers, and each primary stage of the booster transformers is electrically connected with the output end of the voltage regulator through one booster switch.
4. A withstand voltage insulation test control circuit according to any one of claims 1 to 3, characterized in that:
the output voltage detection circuit comprises a step-down transformer bank and a voltmeter, the input end of the step-down transformer bank is electrically connected with the output end of the boost circuit, and the output end of the step-down transformer bank is electrically connected with the voltmeter.
5. A withstand voltage insulation test control circuit according to claim 4, characterized in that:
the step-down transformer set comprises a second preset number of step-down transformers, the primary sides of all the step-down transformers are electrically connected in series, and the secondary sides of all the step-down transformers are electrically connected in series.
6. A withstand voltage insulation test control circuit according to any one of claims 1 to 3, characterized in that:
the insulation measuring circuit comprises an insulation detection switch and an insulation detection meter, the detection switch is electrically connected with the voltage output end, and the insulation detection switch is electrically connected with the insulation detection meter.
7. A withstand voltage insulation test control circuit according to any one of claims 1 to 3, characterized in that:
the voltage-withstand insulation test control circuit further comprises a pressurization test switch circuit, and the output end of the booster circuit is electrically connected with the voltage output end through the pressurization test switch circuit.
8. A withstand voltage insulation test control circuit according to any one of claims 1 to 3, characterized in that:
the voltage-withstand insulation test control circuit further comprises a discharge circuit, and the discharge circuit is electrically connected with the voltage output end.
9. A withstand voltage insulation test control circuit according to any one of claims 1 to 3, characterized in that:
the power input circuit further comprises a power input terminal and a protection switch group, and the input end of the voltage regulator is electrically connected with the power input terminal through the protection switch group.
10. The voltage-resistant insulation test equipment is characterized by comprising a shell and a voltage-resistant insulation test control circuit, wherein the voltage-resistant insulation test control circuit is arranged on the shell;
the voltage resistance insulation test control circuit according to any one of claims 1 to 9 is applied to the voltage resistance insulation test control circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921115152.0U CN210376575U (en) | 2019-07-16 | 2019-07-16 | Withstand voltage insulation test control circuit and withstand voltage insulation test equipment |
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| CN201921115152.0U CN210376575U (en) | 2019-07-16 | 2019-07-16 | Withstand voltage insulation test control circuit and withstand voltage insulation test equipment |
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| CN210376575U true CN210376575U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231555A (en) * | 2019-07-16 | 2019-09-13 | 显利(珠海)造船有限公司 | Pressure-resistant Insulation Test control circuit and pressure-resistant Insulation Test equipment |
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2019
- 2019-07-16 CN CN201921115152.0U patent/CN210376575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231555A (en) * | 2019-07-16 | 2019-09-13 | 显利(珠海)造船有限公司 | Pressure-resistant Insulation Test control circuit and pressure-resistant Insulation Test equipment |
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