CN210071971U - Portable brake unit rapid detection circuit and device using same - Google Patents
Portable brake unit rapid detection circuit and device using same Download PDFInfo
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- CN210071971U CN210071971U CN201920672644.3U CN201920672644U CN210071971U CN 210071971 U CN210071971 U CN 210071971U CN 201920672644 U CN201920672644 U CN 201920672644U CN 210071971 U CN210071971 U CN 210071971U
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- 238000001514 detection method Methods 0.000 title claims description 31
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012031 short term test Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a portable braking unit short-term test circuit and use its device relates to the converter field, and wherein, a portable braking unit short-term test circuit, include: a boost circuit; the output end of the booster circuit is connected with the input end of the rectifying circuit, the output end of the rectifying circuit is respectively connected with the voltage input negative end and the voltage input positive end of the brake unit in the variable-frequency speed regulation device, and the voltage input negative end and the voltage input positive end are also connected with the first voltmeter; and the voltage output negative end and the voltage output positive end of the brake unit are connected with a second voltmeter. The problems that the real working environment of the brake unit cannot be simulated in a working site and whether the brake unit fails or not can not be accurately detected are solved.
Description
Technical Field
The utility model relates to a frequency conversion field, a portable brake unit short-term test circuit and use its device specifically says so.
Background
The brake unit is an important part of the variable-frequency speed regulation device, and is used for absorbing the regenerative energy of the motor, converting the electric energy into heat energy by utilizing the heating characteristic of the brake resistor and consuming the heat energy, thereby effectively ensuring the normal operation of the variable-frequency speed regulation device. The brake unit mainly comprises a control circuit and a silicon controlled rectifier, and whether the silicon controlled rectifier fails or not can only be tested by applying a diode gear of a universal meter, but also the brake unit cannot be tested. Only when the voltage of a direct current bus (namely the voltage input negative electrode end N-and the voltage input positive electrode end P +) of the braking unit reaches over 680V direct current power supply, the direct current voltage gear of the universal meter can accurately detect whether the direct current power supply is in fault or not. At present, a maintenance site and a maintenance studio have no power supply above 680V.
Disclosure of Invention
In view of this, the utility model provides a portable brake unit short-term test circuit and use its device to solve can not simulate out the real operational environment of brake unit at the job site, and the problem whether the detection brake unit that can not be accurate is trouble.
In a first aspect, the utility model provides a portable brake unit short-term test circuit, include:
a boost circuit;
the output end of the booster circuit is connected with the input end of the rectifying circuit, the output end of the rectifying circuit is respectively connected with the voltage input negative end and the voltage input positive end of the brake unit in the variable-frequency speed regulation device, and the voltage input negative end and the voltage input positive end are also connected with the first voltmeter;
the voltage output negative end and the voltage output positive end of the brake unit are connected with a second voltmeter;
the boosting circuit is used for outputting alternating current voltage preset by the braking unit;
the rectifying circuit is used for rectifying the alternating-current voltage into direct-current voltage;
the first voltmeter is used for measuring the alternating voltage;
and the second voltmeter is used for measuring the output voltage of the brake unit.
Preferably, a switch is provided between the booster circuit and the power supply;
and the switch is used for controlling the on-off of the booster circuit and the power supply.
Preferably, an indication circuit is connected in parallel with a connection line of the booster circuit and the power supply;
the indicating circuit is used for indicating the on-off of the booster circuit and the power supply.
Preferably, the indication circuit includes: an indicator light and a current limiting resistor;
one end of the indicator light is connected with one end of the current-limiting resistor, and the other end of the indicator light and the other end of the current-limiting resistor are respectively connected in parallel with a connecting line of the booster circuit and the power supply.
Preferably, the booster circuit includes: a transformer;
the primary coil of the transformer is connected with a power supply, and the secondary coil of the transformer is connected with the input end of the rectifying circuit;
the transformer is used for boosting the voltage of the power supply to the alternating-current voltage preset by the braking unit.
Preferably, an adjustable transformer is arranged between the power supply and the transformer;
the adjustable transformer comprises: the adjustable transformer comprises an adjustable transformer primary coil, an adjustable transformer secondary coil and an adjusting end;
the primary coil of the adjustable transformer is connected with the power supply, and the secondary coil of the adjustable transformer is connected with the primary coil of the transformer;
and the adjusting end is used for changing the voltage output by the secondary coil of the adjustable transformer.
Preferably, the output end of the rectifying circuit is provided with a filter circuit and/or a discharge circuit;
the filter circuit is used for filtering the direct-current voltage;
the discharge circuit is used for eliminating the direct-current voltage.
Preferably, the filter circuit includes: a capacitor; two ends of the capacitor are respectively connected in parallel with the voltage input negative end and the voltage input positive end; and/or
The discharge circuit includes: a resistance; and two ends of the resistor are respectively connected in parallel with the voltage input negative end and the voltage input positive end.
Preferably, the preset alternating voltage of the brake unit is an alternating voltage of 680V or more.
In a second aspect, the present invention provides a portable brake unit rapid detection device, including:
a portable brake unit fast detection circuit as described above; and a housing;
the portable brake unit quick detect circuit is within the housing.
The utility model discloses following beneficial effect has at least:
the utility model provides a portable braking unit short-term test circuit and use its device to solve and can not simulate out the real operational environment of braking unit at the job site, and the problem of whether the detection braking unit that can not be accurate breaks down.
The utility model provides high maintenance efficiency and rate of accuracy, the improvement of the detection accuracy of brake unit, the normal operating of variable frequency speed device has effectively been guaranteed in the emergence of the fault phenomenon of other parts that can effectual reduction variable frequency speed device, has reduced cost of maintenance.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic circuit diagram of a portable brake unit fast detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a portable rapid detection device for a brake unit according to an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Fig. 1 is a schematic circuit diagram of a portable brake unit rapid detection circuit according to an embodiment of the present invention. As shown in fig. 1, a portable brake unit fast detection circuit includes: a booster circuit 1; the output end of the booster circuit 1 is connected with the input end of the rectifying circuit 5, the output end of the rectifying circuit 5 is respectively connected with a voltage input negative end N-and a voltage input positive end P + of a brake unit in the variable-frequency speed regulation device, and the voltage input negative end N-and the voltage input positive end P + are also connected with a first voltmeter 6; the voltage output negative terminal DB and the voltage output positive terminal P1+ of the brake unit are connected with a second voltmeter 7; the booster circuit 1 is used for outputting alternating current voltage preset by the brake unit; a rectifying circuit 5 for rectifying an alternating-current voltage into a direct-current voltage; a first voltmeter 6 for measuring an alternating voltage; and a second voltmeter 7 for measuring the output voltage of the brake unit. The problems that the real working environment of the brake unit cannot be simulated in a working site and whether the brake unit fails or not can not be accurately detected are solved.
The utility model discloses have the function that steps up (promptly, boost circuit 1) and detect voltage (promptly, first voltmeter 6 and second voltmeter 7), can simulate out the true operational environment of braking unit, whether detection braking unit that can be accurate is broken down. The utility model discloses the aspect of brake unit is good for old and field maintenance has played important effect.
The utility model discloses a theory of operation does: the brake unit is provided with a voltage input negative terminal N-and a voltage input positive terminal P +, the brake unit is provided with a voltage output negative terminal DB and a voltage output positive terminal P1+, when the voltages of the voltage input negative terminal N-and the voltage input positive terminal P + reach above the preset alternating voltage, the voltages of the voltage output negative terminal DB and the voltage output positive terminal P1+ gradually rise from 0V, and the brake unit is proved to be intact when the input voltage is equal to the output voltage; the voltage of the output end gradually rises along with the voltage of the input end, so that the damage of the brake unit is proved; when the voltage of the input end reaches above the preset alternating voltage and the voltage of the output end is still 0V, the brake unit is proved to be damaged.
Specifically, in fig. 1, a voltage input negative terminal N-and a voltage input positive terminal P + are connected to a first voltmeter 6 through voltage clamps; the voltage output negative terminal DB and the voltage output positive terminal P1+ of the brake unit are connected to the second voltmeter 7 through voltage clamps. The first voltmeter 6 and the second voltmeter 7 can select a direct current voltmeter with the range of 0-1000V.
In fig. 1, a switch 3 is provided between a booster circuit 1 and a power supply 2; and the switch 3 is used for controlling the on-off of the booster circuit 1 and the power supply 2. Specifically, when the switch 3 is closed, the booster circuit 1 and the power supply 2 are turned on; when the switch 3 is turned off, the booster circuit 1 and the power supply 2 are turned off.
In fig. 1, an indication circuit 4 is connected in parallel to a connection line between a booster circuit 1 and a power supply 2; and an indication circuit 4 for indicating the on/off of the booster circuit 1 and the power supply 2. Specifically, the indication circuit 4 includes: an indicator light and a current limiting resistor; one end of the indicator light is connected with one end of the current-limiting resistor, and the other end of the indicator light and the other end of the current-limiting resistor are respectively connected in parallel with a connecting line of the booster circuit 1 and the power supply 2. Specifically, the power supply 2 is 220V alternating current, and when the switch 3 is closed, the booster circuit 1 and the power supply 2 are switched on, and the indicator lamp of the indicator circuit 4 is electrically turned on; when the switch 3 is turned off, the booster circuit 1 and the power supply 2 are turned off, and the indicator lamp of the indicator circuit 4 is electrically turned off.
In fig. 1, a booster circuit 1 includes: a transformer 12; the primary coil of the transformer 12 is connected with the power supply 2, and the secondary coil of the transformer 12 is connected with the input end of the rectifying circuit 5; and a transformer 12 for boosting the voltage of the power supply 2 to an alternating current voltage preset by the brake unit. Specifically, the transformer 12 is a 220-660V transformer.
In fig. 1, there is also a variable transformer 11 between the power supply 2 and the transformer 12; a variable transformer 11, comprising: the adjustable transformer comprises an adjustable transformer primary coil, an adjustable transformer secondary coil and an adjusting end; the primary coil of the adjustable transformer is connected with the power supply 2, and the secondary coil of the adjustable transformer is connected with the primary coil of the transformer 12; and the adjusting end is used for changing the voltage output by the secondary coil of the adjustable transformer. Specifically, the adjustable transformer 11 is a 0-250V adjustable transformer. Further, if the ac voltage output from the secondary winding of the transformer 12 is lower than the predetermined ac voltage, the adjusting terminal of the transformer 12 is adjusted to increase the voltage output from the secondary winding of the adjustable transformer until the ac voltage output from the secondary winding of the transformer 12 reaches the predetermined ac voltage.
In fig. 1, the output of the rectifying circuit 5 has a filter circuit and/or a discharge circuit; the filter circuit is used for filtering the direct-current voltage; and the discharge circuit is used for eliminating the direct-current voltage. Specifically, the rectifier circuit 5 is a bridge rectifier circuit in 1.
In fig. 1, a filter circuit includes: a capacitor C; two ends of the capacitor C are respectively connected in parallel with a voltage input negative electrode end N-and a voltage input positive electrode end P +; and/or a discharge circuit comprising: a resistance R; two ends of the resistor R are respectively connected in parallel with a voltage input negative electrode end N-and a voltage input positive electrode end P +.
In fig. 1, the predetermined ac voltage of the brake unit is an ac voltage of 680V or more. Specifically, when the voltage of the voltage input negative terminal N-and the voltage input positive terminal P + reaches over 680V, the voltage of the voltage output negative terminal DB and the voltage output positive terminal P1+ gradually rises from 0V, and the input voltage and the output voltage are equal, the brake unit is proved to be intact; the voltage of the output end gradually rises along with the voltage of the input end, so that the damage of the brake unit is proved; when the voltage of the input end reaches more than 680V and the voltage of the output end is still 0V, the brake unit is proved to be damaged.
Fig. 2 is a schematic diagram of a portable rapid detection device for a brake unit according to an embodiment of the present invention. As shown in fig. 2, a portable brake unit rapid detection apparatus includes: the portable brake unit rapid detection circuit is provided; and a housing 8; the portable brake unit quick detect circuit is within the housing 8. In particular, the housing 8 may be an insulating box.
In fig. 2, the switch 3, the indicating circuit 4, the first voltmeter display 61 of the first voltmeter 6, the second voltmeter display 71 of the second voltmeter 7, the brake unit connection terminal 9, and the adjusting end hand wheel 111 of the adjustable transformer 11 are embedded on the outer side of the housing 8; the brake unit wiring terminals 9 are respectively a voltage input negative terminal N-, a voltage input positive terminal P +, a voltage output negative terminal DB and a voltage output positive terminal P1 +; the adjusting end hand wheel 111 is used for changing the voltage output by the adjustable transformer 11.
The utility model discloses use in the scene, whether detection brake unit that can be accurate breaks down, the rate of accuracy reaches 100%. The utility model discloses can accurate detection go out the brake unit whether trouble, improve maintenance efficiency and rate of accuracy, the improvement of the detection accuracy of brake unit, the emergence of the fault phenomenon of other parts that can effectual reduction variable frequency speed device effectively guarantees variable frequency speed device's normal operating, has reduced cost of maintenance. 2018 use the utility model discloses detect brake unit 91, the rate of accuracy reaches 100%. 40 old braking units in the same year are used, a portable braking unit rapid detection device is used for detection, all the old braking units are completely usable, the unit price of each braking unit is calculated according to 0.35 ten thousand yuan, and the purchase cost is saved by 14 ten thousand yuan.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A portable brake unit rapid detection circuit, comprising:
a booster circuit (1);
the output end of the booster circuit (1) is connected with the input end of a rectifying circuit (5), the output end of the rectifying circuit (5) is respectively connected with a voltage input negative electrode end N-and a voltage input positive electrode end P + of a brake unit in the variable-frequency speed regulation device, and the voltage input negative electrode end N-and the voltage input positive electrode end P + are also connected with a first voltmeter (6);
the voltage output negative terminal DB and the voltage output positive terminal P1+ of the brake unit are connected with a second voltmeter (7);
the booster circuit (1) is used for outputting an alternating current voltage preset by the brake unit;
the rectifying circuit (5) is used for rectifying the alternating voltage into direct voltage;
-said first voltmeter (6) for measuring said alternating voltage;
the second voltmeter (7) is used for measuring the output voltage of the brake unit.
2. The portable brake unit fast detection circuit according to claim 1, wherein:
a switch (3) is arranged between the booster circuit (1) and the power supply (2);
and the switch (3) is used for controlling the on-off of the booster circuit (1) and the power supply (2).
3. The portable brake unit fast detection circuit according to claim 2, wherein:
an indication circuit (4) is connected in parallel with a connecting line of the booster circuit (1) and the power supply (2);
the indication circuit (4) is used for indicating the on-off of the booster circuit (1) and the power supply (2).
4. A portable brake unit fast detection circuit according to claim 3, characterized in that:
the indication circuit (4) comprises: an indicator light and a current limiting resistor;
one end of the indicator light is connected with one end of the current-limiting resistor, and the other end of the indicator light and the other end of the current-limiting resistor are respectively connected in parallel with a connecting line of the booster circuit (1) and the power supply (2).
5. The portable brake unit fast detection circuit according to any one of claims 1-4, wherein:
the booster circuit (1) comprises: a transformer (12);
the primary coil of the transformer (12) is connected with the power supply (2), and the secondary coil of the transformer (12) is connected with the input end of the rectifying circuit (5);
the transformer (12) is used for boosting the voltage of the power supply (2) to an alternating current voltage preset by the brake unit.
6. The portable brake unit fast detection circuit according to claim 5, wherein:
an adjustable transformer (11) is arranged between the power supply (2) and the transformer (12);
the adjustable transformer (11) comprising: the adjustable transformer comprises an adjustable transformer primary coil, an adjustable transformer secondary coil and an adjusting end;
the primary coil of the adjustable transformer is connected with the power supply (2), and the secondary coil of the adjustable transformer is connected with the primary coil of the transformer (12);
and the adjusting end is used for changing the voltage output by the secondary coil of the adjustable transformer.
7. The portable brake unit fast detection circuit according to any one of claims 1-4, wherein:
the output end of the rectifying circuit (5) is provided with a filter circuit and/or a discharge circuit;
the filter circuit is used for filtering the direct-current voltage;
the discharge circuit is used for eliminating the direct-current voltage.
8. The portable brake unit fast detection circuit according to claim 7, wherein:
the filter circuit includes: a capacitor C; the two ends of the capacitor C are respectively connected in parallel with the voltage input negative electrode end N-and the voltage input positive electrode end P +; and/or
The discharge circuit includes: a resistance R; and two ends of the resistor R are respectively connected in parallel with the voltage input negative electrode end N-and the voltage input positive electrode end P +.
9. The portable brake unit fast detection circuit according to any one of claims 1-4, wherein:
the preset alternating voltage of the brake unit is over 680V.
10. An apparatus for applying a portable brake unit quick detect circuit, comprising:
a portable brake unit fast detection circuit according to any one of claims 1-9; and a housing (8);
the portable brake unit rapid detection circuit is within the housing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920672644.3U CN210071971U (en) | 2019-05-13 | 2019-05-13 | Portable brake unit rapid detection circuit and device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920672644.3U CN210071971U (en) | 2019-05-13 | 2019-05-13 | Portable brake unit rapid detection circuit and device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210071971U true CN210071971U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920672644.3U Active CN210071971U (en) | 2019-05-13 | 2019-05-13 | Portable brake unit rapid detection circuit and device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210071971U (en) |
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2019
- 2019-05-13 CN CN201920672644.3U patent/CN210071971U/en active Active
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