CN202772062U - Miniature circuit breaker with high breaking capacity - Google Patents
Miniature circuit breaker with high breaking capacity Download PDFInfo
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- CN202772062U CN202772062U CN 201220506794 CN201220506794U CN202772062U CN 202772062 U CN202772062 U CN 202772062U CN 201220506794 CN201220506794 CN 201220506794 CN 201220506794 U CN201220506794 U CN 201220506794U CN 202772062 U CN202772062 U CN 202772062U
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Abstract
The utility model relates to a miniature circuit breaker with the high breaking capacity. The miniature circuit breaker is composed of an insulated housing, an operating mechanism, a thermal tripping mechanism, a magnetic tripping mechanism, a shunt tripping mechanism, an arc extinguishing mechanism and a contact terminal apparatus. The shunt tripping mechanism comprises a shunt tripping coil, an electronic circuit board and a control line; and the circuit on the electronic circuit board includes a logic identification circuit, a protection circuit and a switching circuit. According to the miniature circuit breaker with the high breaking capacity, problems that the circuit breaker has the low breaking capacity and remote control of a paying energy meter can not be realized in the prior art can be effectively solved. Designs of a dual-breaker structure, dual-circular runway arc striking and a double arc extinguishing chamber are employed by the miniature circuit breaker; and the breaking capacity is improved and the short-circuit breaking capacity can reach a level of over 10KA. And the logic identification circuit and the switching circuit are utilized to realize remote control on the paying energy meter; and with utilization of the protection circuit, the damages o the electronic circuit board due to the switching overvoltage and lightning overvoltage can be avoided.
Description
Technical field
The utility model relates to a kind of circuit breaker, and specifically a kind of high-breaking miniature breaker belongs to the power control technology field.
Background technology
Circuit breaker refers to close and closes, carries and cut-off electric current under the normal loop condition, and can close close, in the in setting time carrying with cut-off the switching device of the electric current under the unusual loop condition.Circuit breaker can be used to distribute electric energy; do not start continually asynchronous motor; power circuit and motor etc. are carried out protection; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for their; its function is equivalent to the combination of Fuse switch and mistake underheat relay etc., and does not generally need to change parts behind the disjunction fault current.
Prepayment meter is called again quantitative electric energy meter, IC-card electric energy meter, and except the function of measuring with common electric energy meter, specifically the user buys first electricity, and buying behind the electricity could electricity consumption, if the user does not continue to sell electricity after being finished electricity, then automatic cut-off power is stopped power supply.
Unit, student dormitory, high residential building and more liquid user in the face of the charge of electricity using difficulty, pre-paying kilowatt-hour meter has preferably to be used, but, existing power consumption equipment often can be because electrical network or circuit question and overvoltage operation, finally cause power consumption equipment to damage, or because line insulation is damaged to be caused leaking electricity, cause safety problem; And; earth leakage protective device does not on the market have remote control function; in the time need to overhauling certain regional electrical network; the administrative department of network system can't realize the Long-distance Control of prepayment meter; can not concentrate and cut off the electricity supply; must notify one by one user oneself to cut off the electricity supply, this greatly reduces the operating efficiency of the administrative department of network system.
The utility model content
Technical problem to be solved in the utility model is the technical problem of the Long-distance Control of low, the electric energy meter of can't realizing paying of the breaking capacity of circuit breaker in the prior art, thereby the high-breaking miniature breaker that a kind of breaking capacity is high, can realize Long-distance Control is provided.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of high-breaking miniature breaker, described miniature circuit breaker is double-breakpoint structure, comprises insulation crust, operating mechanism, thermal tripping mechanism, magnetic tripping mechanism, shunted exciter tripping mechanism, arc quenching system and contact apparatus; Described shunted exciter tripping mechanism comprises shunt opening trip coil, electronic circuit board and control line, and the circuit on the described electronic circuit board comprises:
The logic identification circuit, input links to each other with Signal-controlled switch in the ammeter, is used for the logical signal of identification circuit;
Protective circuit is used for the electronic devices and components protection of described electronic circuit board, avoids switching overvoltage and Lightning Over-voltage to the damage of described electronic circuit board, comprises an input and two outputs, the input of the described protective circuit line of starting to exchange fire;
Switching circuit, the break-make for control signal comprises the first switching circuit, second switch circuit, described the first switching circuit and described second switch circuit respectively have an input, a control end and an output; The control end of described the first switching circuit is connected with the output of described logic identification circuit, the first output of the described protective circuit of input termination of described the first switching circuit, the output termination tripping mechanism of described the first switching circuit; The second output of the described protective circuit of input termination of described second switch circuit, the first output of the described protective circuit of control termination of described second switch circuit, the output termination tripping mechanism of described second switch circuit;
Tripping mechanism is used for promoting circuit breaker trip.
Described high-breaking miniature breaker, described logic identification circuit comprises resistance R 1 and diode D1, one end of described resistance R 1 links to each other with the Signal-controlled switch of ammeter, the other end of described resistance R 1 is connected with the positive pole of described diode D1, and the negative pole of described diode D1 is as the control end of described first switching circuit of output termination of described logic identification circuit.
Described high-breaking miniature breaker, described protective circuit comprises piezo-resistance VR1, resistance R 2, diode D2, the described tripping mechanism of a termination of described piezo-resistance VR1, the positive pole of the described diode D2 of another termination, the link of described piezo-resistance VR1 and the described diode D2 line of starting to exchange fire, the negative pole of described diode D2 connects an end of described resistance R 2; The negative pole of described diode D2 is as the input of the described second switch circuit of the second output termination of described protective circuit; The other end of described resistance R 2 is as the input of described first switching circuit of the first output termination of described protective circuit, the control end of described second switch circuit.
Described high-breaking miniature breaker, described the first switching circuit comprises triode Q1, electrochemical capacitor C1 and voltage stabilizing didoe V4, the collector electrode of described triode Q1 connects described resistance R 2, after the base stage of the negative pole of the positive pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects, jointly connect the negative pole of described diode D1, the emitter of the positive pole of the negative pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects described tripping mechanism after connecting jointly; The base stage of described triode Q1 is as the control end of described the first switching circuit, and the collector electrode of described triode Q1 is as the input of described the first switching circuit, and the emitter of described triode Q1 is as the output of described the first switching circuit.
Described high-breaking miniature breaker, described second switch circuit comprises controllable silicon TR1, resistance R 3, R4, voltage stabilizing didoe V1, V2, TVS diode V3, electrochemical capacitor C2, capacitor C 3; The positive pole of described voltage stabilizing didoe V1 is connected with the negative pole of described voltage stabilizing didoe V2, and the positive pole of described voltage stabilizing didoe V2 connects described tripping mechanism, and an end of the negative pole of described voltage stabilizing didoe V1, described resistance R 3 is connected with described resistance R 2 after connecting jointly; The positive pole of the described electrochemical capacitor C2 of another termination of described resistance R 3, the negative pole of described electrochemical capacitor C2 connects described tripping mechanism, the end of the described TVS diode of the public termination V3 of described resistance R 3 and described electrochemical capacitor C2, the end of the other end connecting resistance R4 of described TVS diode V3, one end of the described capacitor C 3 of another termination of described resistance R 4, the described tripping mechanism of another termination of described capacitor C 3, the common port of described resistance R 4 and described capacitor C 3, connect the control utmost point of described controllable silicon TR1, the positive pole of described controllable silicon TR1 connects the negative pole of described diode D2, and the negative pole of described controllable silicon TR1 connects described tripping mechanism; The common port of described voltage stabilizing didoe V1, resistance R 3 is as the control end of described second switch circuit, and the positive pole of described controllable silicon TR1 is as the input of described second switch circuit, and the negative pole of described controllable silicon TR1 is as the output of described second switch circuit.
Described high-breaking miniature breaker, described operating mechanism comprise handle, U-shaped bar, snap close, tripping and back-moving spring thereof.
Described high-breaking miniature breaker, described thermal tripping mechanism makes mechanical unlocking by Bimetal Elements temperature distortion bending.
Described high-breaking miniature breaker, described contact apparatus comprise two moving contacts and two fixed contacts.
Described high-breaking miniature breaker, described arc quenching system is by two arc control device and the upper and lower arc striking piece corresponding with described dynamic and static contact form up and down.
Technique scheme of the present utility model has the following advantages compared to existing technology:
High-breaking miniature breaker described in the utility model comprises insulation crust, operating mechanism, thermal tripping mechanism, magnetic tripping mechanism, shunted exciter tripping mechanism, arc quenching system and contact apparatus; Described shunted exciter tripping mechanism comprises shunt opening trip coil, electronic circuit board and control line, and the circuit on the described electronic circuit board comprises logic identification circuit, protective circuit and switching circuit.Above-mentioned high-breaking miniature breaker has avoided effectively that the breaking capacity of circuit breaker in the prior art is low, the problem of the Long-distance Control of the electric energy meter of can't realizing paying; high-breaking miniature breaker is by adopting double-breakpoint structure, the striking of two circular arc runway and double arc extinguishing chambers design; improve breaking capacity; short circuit breaking capacity reaches more than the 10KA; can realize Long-distance Control to the paying electric energy meter by logic identification circuit and switching circuit, avoid switching overvoltage and Lightning Over-voltage to the damage of electronic circuit board by protective circuit.。
Description of drawings
For content of the present utility model is more likely to be clearly understood, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein,
Fig. 1 is the structural representation of high-breaking miniature breaker described in the utility model;
Fig. 2 is the circuit theory diagrams on the electronic circuit board of the described high-breaking miniature breaker of the utility model Fig. 1;
Fig. 3 is the circuit breaker schematic diagram of the described high-breaking miniature breaker of the utility model Fig. 1;
Fig. 4 is another schematic diagram of circuit breaker shown in Figure 3.
Reference numeral is expressed as among the figure: 1-logic identification circuit, 2-protective circuit, 3-switching circuit, 31-the first switching circuit, 32-second switch circuit, 4-tripping mechanism.
Embodiment
The structure of high-breaking miniature breaker described in the utility model as shown in Figure 3, it comprises insulation crust, operating mechanism, thermal tripping mechanism, magnetic tripping mechanism, shunted exciter tripping mechanism, arc quenching system and contact apparatus; Described shunted exciter tripping mechanism comprises shunt opening trip coil, electronic circuit board and control line, and referring to shown in Figure 1, the circuit on the described electronic circuit board comprises logic identification circuit 1, protective circuit 2, switching circuit 3 and tripping mechanism 4, and physical circuit is referring to shown in Figure 2.
Logic identification circuit 1, input links to each other with Signal-controlled switch in the ammeter, is used for the logical signal of identification circuit; In the present embodiment, described logic identification circuit 1 comprises resistance R 1 and diode D1, one end of described resistance R 1 links to each other with the Signal-controlled switch of ammeter, the other end of described resistance R 1 is connected with the positive pole of described diode D1, and the negative pole of described diode D1 is as the control end of described first switching circuit 31 of output termination of described logic identification circuit 1.
Protective circuit 2 is used for the electronic devices and components protection of described electronic circuit board, avoids switching overvoltage and Lightning Over-voltage to the damage of described electronic circuit board, comprises an input and two outputs, the input of the described protective circuit line of starting to exchange fire; In the present embodiment, described tripping mechanism 4 is tripping coil, described protective circuit 2 comprises piezo-resistance VR1, resistance R 2, diode D2, the described tripping coil QA of the termination of described piezo-resistance VR1, the positive pole of the described diode D2 of another termination, the link of described piezo-resistance VR1 and the described diode D2 line of starting to exchange fire, the negative pole of described diode D2 connects an end of described resistance R 2; The negative pole of described diode D2 is as the input of the described second switch circuit 32 of the second output termination of described protective circuit 2; The other end of described resistance R 2 is as the input of described first switching circuit 31 of the first output termination of described protective circuit 2, the control end of described second switch circuit.
Switching circuit 3, the break-make for control signal comprises the first switching circuit 31, second switch circuit 32, described the first switching circuit 31 and described second switch circuit 32 respectively have an input, a control end and an output; The control end of described the first switching circuit 31 is connected with the output of described logic identification circuit 1, the first output of the described protective circuit 2 of input termination of described the first switching circuit 31, the output termination tripping mechanism 4 of described the first switching circuit 31; The second output of the described protective circuit 2 of input termination of described second switch circuit 32, the 3rd output of the described protective circuit 2 of control termination of described second switch circuit 32, the output termination tripping mechanism 4 of described second switch circuit 32.In the present embodiment, described the first switching circuit 31 comprises triode Q1, electrochemical capacitor C1 and voltage stabilizing didoe V4; The collector electrode of described triode Q1 connects described resistance R 2, after the base stage of the negative pole of the positive pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects, jointly connect the negative pole of described diode D1, the emitter of the positive pole of the negative pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects described tripping coil after connecting jointly; The base stage of described triode Q1 is as the control end of described the first switching circuit 31, and the collector electrode of described triode Q1 is as the input of described the first switching circuit 31, and the emitter of described triode Q1 is as the output of described the first switching circuit 31.
Described second switch circuit 32 comprises controllable silicon TR1, resistance R 3, R4, voltage stabilizing didoe V1, V2, TVS diode V3, electrochemical capacitor C2, capacitor C 3; The positive pole of described voltage stabilizing didoe V1 is connected with the negative pole of described voltage stabilizing didoe V2, and the positive pole of described voltage stabilizing didoe V2 connects described tripping coil, and an end of the negative pole of described voltage stabilizing didoe V1, described resistance R 3 is connected with described resistance R 2 after connecting jointly; The positive pole of the described electrochemical capacitor C2 of another termination of described resistance R 3, the negative pole of described electrochemical capacitor C2 connects described tripping coil, the end of the described TVS diode of the public termination V3 of described resistance R 3 and described electrochemical capacitor C2, the end of the other end connecting resistance R4 of described TVS diode V3, one end of the described capacitor C 3 of another termination of described resistance R 4, the described tripping coil of another termination of described capacitor C 3, the common port of described resistance R 4 and described capacitor C 3, connect the control utmost point of described controllable silicon TR1, the positive pole of described controllable silicon TR1 connects the negative pole of described diode D2, and the negative pole of described controllable silicon TR1 connects described tripping coil; The common port of described voltage stabilizing didoe V1, resistance R 3 is as the control end of described second switch circuit 32, the positive pole of described controllable silicon TR1 is as the input of described second switch circuit, and the negative pole of described controllable silicon TR1 is as the output of described second switch circuit.
When the Signal-controlled switch in the ammeter disconnects, described triode Q1 cut-off, the common port voltage of described resistance R 3 and described voltage stabilizing didoe V1 is high, is high level, described controllable silicon TR1 conducting, described tripping coil QA adhesive, described circuit breaker tripping; When the Signal-controlled switch in the ammeter is closed, described triode Q1 conducting, the voltage of the common port of described resistance R 3 and described voltage stabilizing didoe V1 is low, be low level, described controllable silicon TR1 cut-off, not adhesive of described tripping coil QA, described circuit breaker does not trip, the product normal operation.
Referring to Fig. 3, shown in Figure 4, high-breaking miniature breaker in the present embodiment, described insulation crust is made by glass strengthening polyamide high-strength nylon, described operating mechanism comprises handle, U-shaped bar, snap close, tripping and back-moving spring thereof, described thermal tripping mechanism makes mechanical unlocking by Bimetal Elements temperature distortion bending, described magnetic tripping mechanism is formed by the coiling of polyester enameled sheet wire, described contact apparatus comprises two moving contacts and two fixed contacts, and described arc quenching system is by two arc control device and the upper and lower arc striking piece corresponding with described dynamic and static contact form up and down.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.
Claims (9)
1. high-breaking miniature breaker, described miniature circuit breaker is double-breakpoint structure, comprises insulation crust, operating mechanism, thermal tripping mechanism, magnetic tripping mechanism, shunted exciter tripping mechanism, arc quenching system and contact apparatus; Described shunted exciter tripping mechanism comprises shunt opening trip coil, electronic circuit board and control line, it is characterized in that, the circuit on the described electronic circuit board comprises:
The logic identification circuit, input links to each other with Signal-controlled switch in the ammeter, is used for the logical signal of identification circuit;
Protective circuit is used for the electronic devices and components protection of described electronic circuit board, avoids switching overvoltage and Lightning Over-voltage to the damage of described electronic circuit board, comprises an input and two outputs, the input of the described protective circuit line of starting to exchange fire;
Switching circuit, the break-make for control signal comprises the first switching circuit, second switch circuit, described the first switching circuit and described second switch circuit respectively have an input, a control end and an output; The control end of described the first switching circuit is connected with the output of described logic identification circuit, the first output of the described protective circuit of input termination of described the first switching circuit, the output termination tripping mechanism of described the first switching circuit; The second output of the described protective circuit of input termination of described second switch circuit, the first output of the described protective circuit of control termination of described second switch circuit, the output termination tripping mechanism of described second switch circuit;
Tripping mechanism is used for promoting circuit breaker trip.
2. high-breaking miniature breaker according to claim 1, it is characterized in that, described logic identification circuit comprises resistance R 1 and diode D1, one end of described resistance R 1 links to each other with the Signal-controlled switch of ammeter, the other end of described resistance R 1 is connected with the positive pole of described diode D1, and the negative pole of described diode D1 is as the control end of described first switching circuit of output termination of described logic identification circuit.
3. high-breaking miniature breaker according to claim 1 and 2, it is characterized in that, described protective circuit comprises piezo-resistance VR1, resistance R 2, diode D2, the described tripping mechanism of a termination of described piezo-resistance VR1, the positive pole of the described diode D2 of another termination, the link of described piezo-resistance VR1 and the described diode D2 line of starting to exchange fire, the negative pole of described diode D2 connects an end of described resistance R 2; The negative pole of described diode D2 is as the input of the described second switch circuit of the second output termination of described protective circuit; The other end of described resistance R 2 is as the input of described first switching circuit of the first output termination of described protective circuit, the control end of described second switch circuit.
4. high-breaking miniature breaker according to claim 3, it is characterized in that, described the first switching circuit comprises triode Q1, electrochemical capacitor C1 and voltage stabilizing didoe V4, the collector electrode of described triode Q1 connects described resistance R 2, after the base stage of the negative pole of the positive pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects, jointly connect the negative pole of described diode D1, the emitter of the positive pole of the negative pole of described electrochemical capacitor C1, described voltage stabilizing didoe V4, described triode Q1 connects described tripping mechanism after connecting jointly; The base stage of described triode Q1 is as the control end of described the first switching circuit, and the collector electrode of described triode Q1 is as the input of described the first switching circuit, and the emitter of described triode Q1 is as the output of described the first switching circuit.
5. high-breaking miniature breaker according to claim 4 is characterized in that, described second switch circuit comprises controllable silicon TR1, resistance R 3, R4, voltage stabilizing didoe V1, V2, TVS diode V3, electrochemical capacitor C2, capacitor C 3; The positive pole of described voltage stabilizing didoe V1 is connected with the negative pole of described voltage stabilizing didoe V2, and the positive pole of described voltage stabilizing didoe V2 connects described tripping mechanism, and an end of the negative pole of described voltage stabilizing didoe V1, described resistance R 3 is connected with described resistance R 2 after connecting jointly; The positive pole of the described electrochemical capacitor C2 of another termination of described resistance R 3, the negative pole of described electrochemical capacitor C2 connects described tripping mechanism, the end of the described TVS diode of the public termination V3 of described resistance R 3 and described electrochemical capacitor C2, the end of the other end connecting resistance R4 of described TVS diode V3, one end of the described capacitor C 3 of another termination of described resistance R 4, the described tripping mechanism of another termination of described capacitor C 3, the common port of described resistance R 4 and described capacitor C 3, connect the control utmost point of described controllable silicon TR1, the positive pole of described controllable silicon TR1 connects the negative pole of described diode D2, and the negative pole of described controllable silicon TR1 connects described tripping mechanism; The common port of described voltage stabilizing didoe V1, resistance R 3 is as the control end of described second switch circuit, and the positive pole of described controllable silicon TR1 is as the input of described second switch circuit, and the negative pole of described controllable silicon TR1 is as the output of described second switch circuit.
6. high-breaking miniature breaker according to claim 1 is characterized in that, described operating mechanism comprises handle, U-shaped bar, snap close, tripping and back-moving spring thereof.
7. described high-breaking miniature breaker according to claim 1 is characterized in that, described thermal tripping mechanism makes mechanical unlocking by Bimetal Elements temperature distortion bending.
8. high-breaking miniature breaker according to claim 1 is characterized in that, described contact apparatus comprises two moving contacts and two fixed contacts.
9. high-breaking miniature breaker according to claim 8 is characterized in that, described arc quenching system is by two arc control device and the upper and lower arc striking piece corresponding with described dynamic and static contact form up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506794 CN202772062U (en) | 2012-09-29 | 2012-09-29 | Miniature circuit breaker with high breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506794 CN202772062U (en) | 2012-09-29 | 2012-09-29 | Miniature circuit breaker with high breaking capacity |
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| Publication Number | Publication Date |
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| CN202772062U true CN202772062U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220506794 Expired - Lifetime CN202772062U (en) | 2012-09-29 | 2012-09-29 | Miniature circuit breaker with high breaking capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652947A (en) * | 2016-03-30 | 2016-06-08 | 无锡智卓电气有限公司 | Energy-saving control circuit of electric operating mechanism of circuit breaker |
-
2012
- 2012-09-29 CN CN 201220506794 patent/CN202772062U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652947A (en) * | 2016-03-30 | 2016-06-08 | 无锡智卓电气有限公司 | Energy-saving control circuit of electric operating mechanism of circuit breaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG PEOPLE ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: PEOPLE ELECTRICAL APPLIANCES GROUP CO., LTD. Effective date: 20140528 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140528 Address after: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee after: ZHEJIANG PEOPLE ELE. APPLIANCE Co.,Ltd. Address before: 325604 Zhejiang City, Wenzhou province Yueqing Town Station Road, No. 555 people's Industrial Park, No. Patentee before: People Electric Appliance Group Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |