CN212659960U - Circuit breaker with current detection function - Google Patents
Circuit breaker with current detection function Download PDFInfo
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- CN212659960U CN212659960U CN202021066960.5U CN202021066960U CN212659960U CN 212659960 U CN212659960 U CN 212659960U CN 202021066960 U CN202021066960 U CN 202021066960U CN 212659960 U CN212659960 U CN 212659960U
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Abstract
The utility model discloses a circuit breaker with current detection function, which comprises an electronic reclosing unit, a temperature detection acquisition unit, a tripping temperature threshold value and a warning temperature threshold value smaller than the tripping temperature threshold value are arranged in the temperature detection acquisition unit, a current detection acquisition unit is arranged in the current detection acquisition unit, a rated current threshold value and a first current threshold value smaller than the rated current threshold value are arranged in the current detection acquisition unit, a fault storage unit is used for carrying out first fault recording when the current reaches the first current threshold value and the temperature reaches the warning temperature threshold value, a second fault recording is carried out when the current does not reach the first current threshold value and the temperature reaches the warning temperature threshold value, the circuit breaker monitors and detects the current, the heating condition of the circuit breaker is also detected, the circuit breaker is protected to damage iron sheets and reduce the performance due to overhigh temperature, the troubleshooting is convenient.
Description
Technical Field
The utility model relates to an electronic circuit technical field, more specifically say, it relates to a circuit breaker with current detection function.
Background
Along with the development of economy and science and technology people are higher and higher to the safe demand of power consumption, the circuit breaker is as the important components and parts in the power consumption safety, and it can be when the electric current surpass the trip and set for the back automatic cutout electric current. The circuit breaker on the current market all is the separating brake that comes control circuit breaker through voltage or electric current in the detection circuitry, nevertheless the electric current of circuit breaker does not exceed the trip settlement all the time sometimes, be in the rated current within range, nevertheless because be in great operating current state all the time, thereby the iron sheet that leads to the circuit breaker can be in the state of generating heat for a long time, long-time generating heat can lead to the iron sheet to damage and the performance reduction, finally cause the tripping operation condition because the high temperature, later stage restoration workman is in the detection problem in-process because the electric current is in the rated current range all the time, it is troublesome to cause the troubleshooting trouble, can not fast the efficiency that the problem greatly influenced power station work easily of accurately troubleshooting.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a circuit breaker with current detection function, this circuit breaker is to monitoring the detection by the electric current size, also detects the condition of generating heat of circuit breaker, and protection circuit breaker leads to iron sheet to damage and the performance reduction because of the high temperature, makes things convenient for troubleshooting.
In order to achieve the above purpose, the utility model provides a following technical scheme: a circuit breaker with current detection function is characterized by comprising:
the electronic reclosing unit is used for detecting and controlling various functional parameters of the circuit breaker;
the temperature detection and acquisition unit is used for acquiring and detecting a temperature value in the circuit breaker and transmitting the acquired temperature value to the electronic reclosing unit, and a tripping temperature threshold value and a warning temperature threshold value smaller than the tripping temperature threshold value are arranged in the temperature detection and acquisition unit;
the current detection and acquisition unit is used for acquiring and detecting the magnitude of current and transmitting the detected magnitude of current to the electronic reclosing unit, and a rated current threshold and a first current threshold smaller than the rated current threshold are arranged in the current detection and acquisition unit;
and a fault storage unit for performing a first fault record when the current reaches a first current threshold and the temperature reaches a warning temperature threshold, and performing a second fault record when the current does not reach the first current threshold and the temperature reaches the warning temperature threshold.
The utility model discloses further set up to: the circuit breaker further comprises a communication unit connected with the electronic reclosing unit, and the communication unit is used for feeding back the first fault record and the second fault record stored in the fault storage unit to the remote platform.
The utility model discloses further set up to: and the communication unit performs alarm feedback according to the first fault record and performs warning feedback according to the second fault record.
The utility model discloses further set up to: the temperature detection and acquisition unit is connected with a signal processing circuit, the signal processing circuit is connected with the fault storage unit, and the signal processing circuit is used for filtering the temperature value detected by the temperature detection and acquisition unit and conveying the temperature value to the fault storage unit.
The utility model discloses further set up to: the signal processing circuit comprises a stabilizing circuit coupled with the fault storage unit and a filter circuit coupled with the temperature detection acquisition unit, and the stabilizing circuit is coupled with the filter circuit.
The utility model discloses further set up to: the filter circuit comprises a charging capacitor, the charging capacitor is connected with the temperature detection and acquisition unit in parallel, the positive terminal of the charging capacitor is coupled with the stabilizing circuit, and the negative terminal of the charging capacitor is coupled with the fault storage unit.
The utility model discloses further set up to: the stabilizing circuit comprises a first Schmitt trigger and a second Schmitt trigger, wherein the positive terminal of the charging capacitor is coupled with the input terminal of the first Schmitt trigger to perform preliminary signal conversion, the output terminal of the first Schmitt trigger is coupled with the input terminal of the second Schmitt trigger to perform further signal conversion, and the output terminal of the second Schmitt trigger is coupled with the fault storage unit.
To sum up, the utility model discloses following beneficial effect has: when the temperature value reaches the tripping temperature threshold value, the electronic reclosing unit carries out switching-off operation, the circuit is disconnected, not only the circuit is protected, but also the circuit breaker is protected, so that the situation that elements are damaged due to overhigh temperature of the circuit breaker is avoided, in addition, a warning temperature threshold value is further arranged, the warning temperature threshold value is lower than the tripping temperature threshold value, switching-off operation cannot be carried out when the warning temperature threshold value is reached, but data recording can be carried out according to different current conditions, the fault reason can be conveniently and quickly checked by follow-up maintenance personnel, and the maintenance progress is accelerated.
When the electric current that flows through current detection acquisition unit reaches first current threshold value, at this moment the heat dissipation and the heat production of circuit breaker are in balanced state, but because the heat production rises the state easily and the decline state appears in the heat dissipation easily, if under the first current threshold value condition for a long time, the unbalance's condition appears easily in heat dissipation and heat production, thereby lead to the inside temperature rise of circuit breaker, cause the condition of component damage, often this kind of condition is difficult to be investigated out in current circuit breaker, through the design of current detection acquisition unit, the electric current that will not exceed rated current monitors, conveniently get rid of the fault factor, accelerate the repair work of circuit breaker, thereby avoid because the economic loss that the long-time outage caused.
The fault storage unit stores a first fault record and a second fault record, fault factors can be quickly screened out by means of the first fault record or the second fault record during repair, fault elimination is quickly carried out, and the first fault record is tripping caused by heat generation and heat dissipation imbalance caused by the fact that current reaches a first current threshold value for a long time; and recording the second fault as tripping caused by reduction of heat dissipation capacity due to faults at other parts of the circuit breaker.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker;
fig. 2 is a circuit diagram of the signal processing circuit.
Reference numerals: 1. an electronic reclosing unit; 2. a temperature detection and acquisition unit; 3. a current detection and acquisition unit; 4. a failure storage unit; 5. a communication unit; 6. a signal processing circuit; 61. a stabilization circuit; 611. a first Schmitt trigger; 612. a second Schmitt trigger; 62. a filter circuit; 621. and charging the capacitor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 2, in order to achieve the above object, the present invention provides the following technical solutions: a circuit breaker with current detection function is characterized by comprising:
the electronic reclosing device comprises an electronic reclosing unit 1, a control unit and a control unit, wherein the electronic reclosing unit 1 is used for detecting and controlling various functional parameters of the circuit breaker; this electron reclosing unit 1 can be automatic reclosing with the circuit breaker after the circuit breaker tripping operation including reclosing actuating unit, still including circuit breaker divide-shut brake unit, when the circuit breaker abnormal data appears to and when the fault conditions, carry out the separating brake operation, thereby open circuit protection circuit safety.
The temperature detection and acquisition unit 2 is used for acquiring and detecting a temperature value in the circuit breaker and transmitting the acquired temperature value to the electronic reclosing unit 1, and a tripping temperature threshold value and a warning temperature threshold value smaller than the tripping temperature threshold value are arranged in the temperature detection and acquisition unit 2; this temperature detects the collection unit 2 can gather and detect the inside heat because the electric current produces of circuit breaker, and the heat that will gather feeds back to electron reclosing unit 1, and carry out different operations according to gathering different temperature values, electron reclosing unit 1 carries out the separating brake operation when the temperature value reaches dropout temperature threshold, the open circuit, not only the protection circuit also protects the circuit breaker, so that the circuit breaker is because the temperature is too high, cause the condition of component damage, in addition still be provided with warning temperature threshold, this warning temperature threshold is less than dropout temperature threshold, can not carry out the separating brake operation when arriving warning temperature threshold, but can carry out data record according to the electric current condition of difference, thereby make the convenient quick inspection out the fault cause of follow-up maintenance personnel, accelerate the maintenance progress.
The current detection and acquisition unit 3 is used for acquiring and detecting the current and transmitting the detected current to the electronic reclosing unit 1, and a rated current threshold and a first current threshold smaller than the rated current threshold are arranged in the current detection and acquisition unit 3; the current detection and acquisition unit 3 can continuously acquire the current passing through the current detection and acquisition unit 3 and feed the current back to the electronic reclosing unit 1, when the current detected by the current detection and acquisition unit 3 exceeds a rated current threshold, a current overload phenomenon occurs, an overload time is set, when the current exceeds the set overload time, the electronic reclosing unit 1 carries out switching-off operation and protects a circuit, in addition, the current detection and acquisition unit 3 is also provided with a first current threshold which is smaller than the set value of the rated current threshold but close to the set value of the rated current threshold, when the current passing through the current detection and acquisition unit 3 reaches the first current threshold, the heat dissipation and the heat generation of the circuit breaker are in a balanced state, but the heat dissipation is easy to generate a descending state due to easy occurrence of an ascending state, if the current is in the first current threshold for a long time, the heat dissipation and the heat production condition of unbalance easily appear to lead to the inside temperature rise of circuit breaker, cause the condition of component damage, often this kind of condition is very difficult to be investigated out in current circuit breaker, through current detection acquisition unit 3's design, will not exceed rated current's electric current and monitor, convenient troubleshooting factor for the repair work of circuit breaker, thereby avoid because the economic loss that long-time outage caused.
And the fault storage unit 4 is used for recording a first fault when the current reaches a first current threshold value and the temperature reaches a warning temperature threshold value, and recording a second fault when the current does not reach the first current threshold value and the temperature reaches the warning temperature threshold value. The fault storage unit 4 stores the first fault record and the second fault record by the fault storage unit 4, fault factors can be quickly screened out by means of the first fault record or the second fault record during repair, fault elimination can be quickly carried out, and the first fault record is tripping caused by heat generation and heat dissipation unbalance caused by the fact that current reaches a first current threshold value for a long time; the second fault is recorded as a trip caused by a reduction in heat dissipation capacity (rise in outside temperature, aging of components, etc.) due to a fault occurring at other parts of the circuit breaker.
The circuit breaker further comprises a communication unit 5 connected with the electronic reclosing unit 1, and the communication unit 5 is used for feeding back the first fault record and the second fault record stored in the fault storage unit 4 to a remote platform. The circuit breaker is characterized in that a fault record and a second fault record are fed back to the remote platform, the circuit breaker is monitored in real time through the remote platform, accordingly, remedial operation can be conducted before automatic tripping is conducted, power-off time is controlled artificially, loss is reduced, and data leakage is avoided.
The communication unit 5 carries out alarm feedback according to the first fault record, the communication unit 5 carries out alarm feedback according to the second fault record, the safety degree of the alarm feedback is higher than that of the alarm feedback, the alarm feedback is formed by adding a sound control alarm and a display alarm, the alarm feedback is only a display alarm, monitoring personnel can distinguish the condition of failure of the circuit breaker through alarms with different degrees, and the condition that the failure is not noticed can be avoided.
The temperature detection and acquisition unit 2 is connected with a signal processing circuit 6, the signal processing circuit 6 is connected with the fault storage unit 4, and the signal processing circuit 6 is used for filtering the temperature value detected by the temperature detection and acquisition unit 2 and conveying the temperature value to the fault storage unit 4. The signal processing circuit 6 can filter out clutter such as redundant waves in the temperature value signal transmitted by the temperature detection acquisition unit 2, so that the information transmitted to the fault storage unit 4 is clearer and more accurate.
The signal processing circuit 6 comprises a stabilizing circuit 61 coupled with the fault storage unit 4 and a filtering circuit 62 coupled with the temperature detection acquisition unit 2, wherein the stabilizing circuit 61 is coupled with the filtering circuit 62. The filter circuit 62 can filter out clutter such as redundant waves in the temperature value signal transmitted by the temperature detection and acquisition unit 2, and the stabilizing circuit 61 can convert the filtered signal to realize more stable signal transmission.
The filter circuit 62 includes a charging capacitor 621, the charging capacitor 621 is connected in parallel with the temperature detection and acquisition unit 2, a positive terminal of the charging capacitor 621 is coupled to the stabilizing circuit 61, and a negative terminal of the charging capacitor 621 is coupled to the fault storage unit 4. When temperature detects collection element 2 and carries out signal transmission, charging capacitor 621 removes the shake operation to the signal of telecommunication, when the inboard power was electrified, at first the inboard power can charge charging capacitor 621, shake when the inboard power just electrified can be absorbed by charging capacitor 621 with the form of charging, the time of absorbing the shake can be adjusted in the capacity size of adjustment charging capacitor 621, can specifically adjust charging capacitor 621's capacity according to actual demand, when the tripping operation condition appears in the circuit, charging capacitor 621 can also carry out the power supply operation to trouble memory cell 4, thereby satisfy trouble memory cell 4 and can also carry out the record operation of short time after the outage, it is complete errorless to ensure trouble memory cell 4 memory signal.
The stabilizing circuit 61 comprises a first schmitt trigger 611 and a second schmitt trigger 612, wherein the positive terminal of the charging capacitor 621 is coupled to the input terminal of the first schmitt trigger 611 for preliminary signal conversion, the output terminal of the first schmitt trigger 611 is coupled to the input terminal of the second schmitt trigger 612 for further signal conversion, and the output terminal of the second schmitt trigger 612 is coupled to the fault storage unit 4.
As shown in U19 in the figure, the self-adaptive self.
The signals transmitted by the first schmitt trigger 611 and the second schmitt trigger 612 are converted stably, so that the anti-interference capability is stronger, the driving capability can be improved, the signals are more stable, and the signals received by the fault storage unit 4 are more accurate.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A circuit breaker with current detection function is characterized by comprising:
the electronic reclosing device comprises an electronic reclosing unit (1), a control unit and a control unit, wherein the electronic reclosing unit (1) is used for detecting and controlling functional parameters of the circuit breaker;
the temperature detection and acquisition unit (2), the temperature detection and acquisition unit (2) is used for acquiring and detecting the temperature value in the circuit breaker and transmitting the acquired temperature value to the electronic reclosing unit (1), and a tripping temperature threshold value and a warning temperature threshold value smaller than the tripping temperature threshold value are arranged in the temperature detection and acquisition unit (2);
the current detection and collection unit (3) is used for collecting and detecting the current and transmitting the detected current to the electronic reclosing unit (1), and a rated current threshold and a first current threshold smaller than the rated current threshold are arranged in the current detection and collection unit (3);
a fault storage unit (4), the fault storage unit (4) is used for recording a first fault when the current reaches a first current threshold value and the temperature reaches a warning temperature threshold value, and recording a second fault when the current does not reach the first current threshold value and the temperature reaches the warning temperature threshold value.
2. The circuit breaker with current detection function according to claim 1, wherein: the circuit breaker further comprises a communication unit (5) connected with the fault storage unit (4), and the communication unit (5) is used for feeding back the first fault record and the second fault record stored in the fault storage unit (4) to a remote platform.
3. The circuit breaker with current detection function according to claim 2, wherein: the communication unit (5) performs alarm feedback according to the first fault record, and the communication unit (5) performs warning feedback according to the second fault record.
4. The circuit breaker with current detection function according to claim 1, wherein: temperature detects acquisition unit (2) and is connected with signal processing circuit (6), signal processing circuit (6) are connected with trouble memory cell (4), signal processing circuit (6) are used for carrying out filtering process to the temperature value that temperature detects acquisition unit (2) and carry to on trouble memory cell (4).
5. The circuit breaker with current detection function according to claim 4, wherein: the signal processing circuit (6) comprises a stabilizing circuit (61) coupled with the fault storage unit (4) and a filtering circuit (62) coupled with the temperature detection acquisition unit (2), wherein the stabilizing circuit (61) is coupled with the filtering circuit (62).
6. The circuit breaker with current detection function according to claim 5, wherein: the filter circuit (62) comprises a charging capacitor (621), the charging capacitor (621) is connected with the temperature detection and acquisition unit (2) in parallel, the positive end of the charging capacitor (621) is coupled with the stabilizing circuit (61), and the negative end of the charging capacitor (621) is coupled with the fault storage unit (4).
7. The circuit breaker with current detection function according to claim 6, wherein: the stabilizing circuit (61) comprises a first Schmitt trigger (611) and a second Schmitt trigger (612), the positive terminal of the charging capacitor (621) is coupled to the input terminal of the first Schmitt trigger (611) for preliminary signal conversion, the output terminal of the first Schmitt trigger (611) is coupled to the input terminal of the second Schmitt trigger (612) for further signal conversion, and the output terminal of the second Schmitt trigger (612) is coupled to the fault storage unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021066960.5U CN212659960U (en) | 2020-06-11 | 2020-06-11 | Circuit breaker with current detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021066960.5U CN212659960U (en) | 2020-06-11 | 2020-06-11 | Circuit breaker with current detection function |
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| Publication Number | Publication Date |
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| CN212659960U true CN212659960U (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021066960.5U Expired - Fee Related CN212659960U (en) | 2020-06-11 | 2020-06-11 | Circuit breaker with current detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203402A (en) * | 2023-05-05 | 2023-06-02 | 北京国科环宇科技股份有限公司 | Circuit fault monitoring method and fault detection chip |
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2020
- 2020-06-11 CN CN202021066960.5U patent/CN212659960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203402A (en) * | 2023-05-05 | 2023-06-02 | 北京国科环宇科技股份有限公司 | Circuit fault monitoring method and fault detection chip |
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Granted publication date: 20210305 |
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