CN101221675B - Control device cooperated with plug-in type watt-hour meter - Google Patents
Control device cooperated with plug-in type watt-hour meter Download PDFInfo
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- CN101221675B CN101221675B CN2007103075847A CN200710307584A CN101221675B CN 101221675 B CN101221675 B CN 101221675B CN 2007103075847 A CN2007103075847 A CN 2007103075847A CN 200710307584 A CN200710307584 A CN 200710307584A CN 101221675 B CN101221675 B CN 101221675B
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Abstract
The invention relates to a control device working together with a card plug-in type kilowatt hour meter, which comprises a circuit breaker for controlling the on-off of the output power supply of the card plug-in type kilowatt hour meter. A first normal open contact switch and a second normal open contact switch of the circuit breaker are respectively connected with the fire line output circuit and the zero line output circuit of the card plug-in type kilowatt hour meter. The electrification signal output end of the card plug-in type kilowatt hour meter is connected with the close control voltage signal input end of the circuit breaker. When electric cost is used up, the IN end of the circuit breaker has no voltage signal and the circuit breaker cuts off after a time delay of 0.2-2s. After a user has purchased electricity and inserted an IC card into the card plug-in type kilowatt hour meter, the card plug-in type kilowatt hour meter outputs a close control voltage signal, the IN end of the circuit breaker gets the voltage signal and the circuit breaker can be switched on, and the user gets electricity. The circuit breaker provided by the invention has overloading and short circuit protection characteristics, thereby bringing about low failure rate and good power supply reliability during use.
Description
Technical field
The present invention relates to a kind of control device that is used with card-type kilowatt-hour meter.
Background technology
At present, card-type kilowatt-hour meter has begun to promote the use of, and makes things convenient for power supply department that the user power utilization amount is controlled in real time greatly.Yet but there are a series of problems in the reliability of the control device that is used with card-type kilowatt-hour meter, is unfavorable for popularizing in an all-round way using card-type kilowatt-hour meter.
All a kind of isolating switch that is used for the card-type kilowatt-hour meter system of Chinese patent literature CN 2393218 and CN1139817, except that comprising: go up lower connecting terminal, contact apparatus, arc-control device, tripper, bimetallic element and the magnetic trip gear, also comprise a control circuit and a thermal sensitive ceramics element; Control circuit connects the thermal sensitive ceramics element; Be provided with an isolating switch in the control circuit; The thermal sensitive ceramics element is fixed on the bimetallic strip, and the thermal sensitive ceramics element is connected in series with a normally closed interlock of isolating switch, and is connected across on the neutral line and phase line of user side.This breaker structure complexity, bimetallic element job insecurity, failure rate height.
In addition; user's transmission line of electricity often is provided with a plurality of isolating switchs; and be provided with multistage open circuit protection; higher level's isolating switch is disconnected; cause multiple power supplies to interrupt forming overstep tripping; other electrical equipment can't be used, had a strong impact on the reliability and the security of power supply.
Summary of the invention
The control device that technical matters to be solved by this invention provides that a kind of failure rate is lower, power supply reliability is used with card-type kilowatt-hour meter preferably.
For solving the problems of the technologies described above, the invention provides a kind of control device that is used with card-type kilowatt-hour meter, comprise the isolating switch that is used to control card-type kilowatt-hour meter out-put supply break-make; First of isolating switch is often driven contact-making switch and second and is often opened in the live wire outlet line and zero line outlet line that contact-making switch is serially connected in card-type kilowatt-hour meter respectively; Isolating switch has closed control voltage signal input end; The closure control voltage signal input end of the power on signal output termination isolating switch of card-type kilowatt-hour meter.
In the technique scheme, in the live wire outlet line of card-type kilowatt-hour meter, first of isolating switch is often opened contact-making switch series connection first overload and the short-circuit release; In the zero line outlet line of card-type kilowatt-hour meter, second of isolating switch is often opened contact-making switch series connection second overload and the short-circuit release.
In the technique scheme, first of isolating switch is often driven the contact-making switch and first overload and short-circuit release and is located in the first module box; Second often drives the contact-making switch and second overload and short-circuit release is located in second unit box; Isolating switch also comprises control circuit; The tripping coil of isolating switch and control circuit are located in the 3rd unit box; The closure control voltage signal input end of isolating switch is the closure control voltage signal input end of control circuit, and the control signal output ends of control circuit connects the control input end of the tripping coil of isolating switch.
In the technique scheme, described control circuit comprises: first diode, second diode, the 3rd diode, the 4th diode, first electrochemical capacitor, second electrochemical capacitor, time-delay electrochemical capacitor, first electric capacity, second electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, triode, stabilivolt and one-way SCR; The anode of first diode is the closure control voltage signal input end of described control circuit, and the negative electrode of first diode is connected in series the base stage that connects triode behind first resistance, second resistance; The collector of triode connects the positive pole of second electrochemical capacitor, the minus earth of second electrochemical capacitor; The emitter of triode connects the anode of second diode, the negative electrode connecting to neutral line of second diode; The negative electrode of stabilivolt connects the collector of triode, and the anode of stabilivolt connects the emitter of triode; The positive pole of first electrochemical capacitor meets the contact place of first resistance and second resistance, and the negative pole of first electrochemical capacitor connects the anode of second diode; The collector of triode connects the anode of the 4th diode, and the negative electrode of the 4th diode is connected in series the positive pole that connects the time-delay electrochemical capacitor behind the 4th resistance; The negative pole order of time-delay electrochemical capacitor is to the silicon controlled negative electrode; The negative electrode order that connects the 3rd diode is to controlled anode, the anode of the 3rd diode line of starting to exchange fire; The 3rd resistance is located between the anode of the anode of one-way SCR and the 4th diode, and the negative electrode of one-way SCR connects an end of the tripping coil of isolating switch, is the control input end of the tripping coil of described isolating switch; The other end connecting to neutral line of tripping coil; The 5th resistance is in parallel with the time-delay electrochemical capacitor; Be located at after first electric capacity and second capacitances in series between the negative electrode of the negative electrode of the 3rd diode and one-way SCR.
The present invention has positive effect: among (1) the present invention, the closure control voltage signal of the power on signal output terminal of card-type kilowatt-hour meter output is used to control isolating switch; After electric weight that the user buys used up, card-type kilowatt-hour meter did not have the output of closed control voltage signal, often drove contact-making switch and all disconnected user's outage thereby make first of isolating switch often drive contact-making switch and second.After the user buys electric weight, IC-card is inserted card-type kilowatt-hour meter, the closed control of card-type kilowatt-hour meter output voltage signal is often opened all closures of contact-making switch thereby make first of isolating switch often drive contact-making switch and second, and the user gets.Failure rate of the present invention is low, has guaranteed the reliability of power supply.Even if the user wants to get rid of the ammeter electricity consumption, because the output of closed control voltage signal line no-voltage signal is cut off closed control voltage signal line and still can not be powered.Control device of the present invention is simple in structure, and failure rate is lower, and power supply reliability is good.
Description of drawings
Fig. 1 is an electric the theory diagram of the present invention and control device that card-type kilowatt-hour meter is used.
Fig. 2 is a shape assumption diagram of the present invention and control device that card-type kilowatt-hour meter is used.
Fig. 3 is the inner structure synoptic diagram of the 3rd unit box among Fig. 2.
Fig. 4 is the circuit theory diagrams of the control circuit among Fig. 3.
Mark in the accompanying drawing: isolating switch--KM, first often drives contact-making switch--K1, second often drives contact-making switch--K2, overload protective device--F1, short-circuit protector-F2, first module box--A, second unit box--B, the 3rd unit box--C, pedestal--1, handle--2, spring--3, the U-shaped bar--4, thread off--5, contact--6, contact--7, control circuit--8, the tripping coil of isolating switch--9, control signal wire--10, lead--11, electrical apparatus release-12, snap close--13.
Embodiment
(embodiment 1)
See Fig. 1, the control device that is used with card-type kilowatt-hour meter of the present invention comprises the isolating switch KM that is used to control card-type kilowatt-hour meter out-put supply break-make; First of isolating switch KM often opens contact-making switch K1 and second and often opens in the live wire outlet line and zero line outlet line that contact-making switch K2 is serially connected in card-type kilowatt-hour meter respectively; Isolating switch KM has closed control voltage signal input end IN; The closure control voltage signal input end IN of the power on signal output termination isolating switch KM of card-type kilowatt-hour meter.
See Fig. 1, in the live wire outlet line of card-type kilowatt-hour meter, first of isolating switch KM often opens contact-making switch K1 series connection first overload and the short-circuit release F1; In the zero line outlet line of card-type kilowatt-hour meter, second of isolating switch KM often opens contact-making switch K1 series connection second overload and the short-circuit release F2.
See Fig. 2, first of described isolating switch KM often opens the contact-making switch K1 and first overload and short-circuit release F1 and is located in the first module box A; Second often opens the contact-making switch K2 and second overload and short-circuit release F2 is located in the second unit box B.
Isolating switch KM also comprises control circuit 8; The tripping coil 9 of isolating switch KM, control circuit 8 are located in the 3rd unit box C; The closure control voltage signal input end IN of isolating switch KM is the closure control voltage signal input end of control circuit 8, and the control signal output ends of control circuit 8 connects the control input end of the tripping coil 9 of isolating switch KM.
See Fig. 3, described the 3rd unit box C comprises pedestal 1, handle 2, spring 3, U-shaped bar 4, dropout 5, contact 6, contact 7, control circuit 8, isolating switch KM, control signal wire 10, lead 11, electrical apparatus release 12 and snap close 13.
See Fig. 4, described control circuit 8 comprises: the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first electrochemical capacitor C1, the second electrochemical capacitor C4, time-delay electrochemical capacitor C5, first capacitor C 2, second capacitor C 3, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, triode V1, stabilivolt V2, voltage dependent resistor (VDR) Rv and unidirectional controllable silicon S CR.
The anode of the first diode D1 is the closure control voltage signal input end of described control circuit 8, and the negative electrode of the first diode D1 is connected in series the base stage that meets triode V1 after first resistance R 1, second resistance R 2; The collector of triode V1 connects the positive pole of the second electrochemical capacitor C4, the minus earth of the second electrochemical capacitor C4; The emitter of triode V1 connects the anode of the second diode D2, the negative electrode connecting to neutral line N of the second diode D2; The negative electrode of stabilivolt V2 connects the collector of triode V1, and the anode of stabilivolt V2 connects the emitter of triode V1; The positive pole of the first electrochemical capacitor C1 meets the contact place of first resistance R 1 and second resistance R 2, and the negative pole of the first electrochemical capacitor C1 connects the anode of the second diode D2; The collector of triode V1 connects the anode of the 4th diode D4, and the negative electrode of the 4th diode D4 is connected in series the positive pole that meets time-delay electrochemical capacitor C5 after the 4th resistance R 4; The negative pole order of time-delay electrochemical capacitor C5 is to the negative electrode of controllable silicon SCR; Connect the anode of the negative electrode order of the 3rd diode D3, the anode of the 3rd diode D3 line L that starts to exchange fire to controlled SCR; The 3rd resistance R 3 is located between the anode of the anode of unidirectional controllable silicon S CR and the 4th diode D4, and the negative electrode of unidirectional controllable silicon S CR connects an end of the tripping coil 9 of isolating switch KM, is the control input end of the tripping coil 9 of described isolating switch KM; The other end connecting to neutral line N of tripping coil 9; The 5th resistance R 5 is in parallel with time-delay electrochemical capacitor C5; Between the negative electrode of first capacitor C 2 and the negative electrode of being located at the 3rd diode D3 after second capacitor C 3 is connected and unidirectional controllable silicon S CR, to play filter action, the fluctuation of control abnormity of power supply is to the interference of control circuit 8.
Voltage dependent resistor (VDR) Rv be located between zero line N and the live wire L after tripping coil 9 is connected, control circuit 8 is shielded.The model of voltage dependent resistor (VDR) Rv is 7K360.
The course of work of control circuit 8 is: when the closure control voltage signal input end IN of isolating switch KM is noble potential, triode V1 saturation conduction, Q point among Fig. 4 is an electronegative potential, unidirectional controllable silicon S CR ends, the tripping coil 9 of isolating switch KM is in off state, and isolating switch KM does not carry out the action of threading off; When described closed control voltage signal input end IN is electronegative potential, triode V1 ends, the sine voltage of live wire L end is by the 3rd diode D3, the 3rd resistance R 3, the 4th diode D4 and 4 pairs of time-delays of the 4th resistance R electrochemical capacitor C5 time-delay charging, after described Q point current potential rises to the trigger voltage of unidirectional controllable silicon S CR, unidirectional controllable silicon S CR conducting, described tripping coil 9 must conduct, and isolating switch KM starts the action of threading off.
As shown in the above: the size of time-delay electrochemical capacitor C5 has determined the length of isolating switch KM delay time, and the general selectable scope of delay time is 0.2-2 second, produces misoperation to avoid electric system to have a power failure, and further guarantees the reliability of power supply.
After the user buys electric weight, IC-card is inserted card-type kilowatt-hour meter, the closure control voltage signal of card-type kilowatt-hour meter output 220V is to the closure control voltage signal input end IN of isolating switch KM then, isolating switch KM does not carry out the action of threading off, promptly first often open contact-making switch K1 and second often to open contact-making switch K2 all closed, the user gets.
After card-type kilowatt-hour meter has adopted control device of the present invention, after the electric weight of user's purchase uses up, the auxiliary contact of watt-hour meter disconnects, cause described closed control voltage signal input end IN not have closed control voltage signal and promptly be in electronegative potential, the sine voltage of live wire L end is by the 3rd diode D3 time-delay charge (for example delaying time 0.5 second) to time-delay electrochemical capacitor C5, make described Q point current potential rise to the trigger voltage of unidirectional controllable silicon S CR, unidirectional controllable silicon S CR conducting, the tripping coil 9 of isolating switch KM must conduct, isolating switch KM starts the action of threading off, promptly first often open contact-making switch K1 and second and often open contact-making switch K2 and all disconnect, user's outage.
If the user wants to get rid of the ammeter electricity consumption, cut off closed control voltage signal line, because the output of the control signal output ends no-voltage signal of control circuit 8, electrical apparatus release still sends trip signal, isolating switch KM disconnects.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.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 exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (2)
1. a control device that is used with card-type kilowatt-hour meter is characterized in that: comprise the isolating switch (KM) that is used to control card-type kilowatt-hour meter out-put supply break-make; First of isolating switch (KM) is often driven contact-making switch (K1) and second and is often opened in the live wire outlet line and zero line outlet line that contact-making switch (K2) is serially connected in card-type kilowatt-hour meter respectively; Isolating switch (KM) has closed control voltage signal input end (IN); The closure control voltage signal input end (IN) of the power on signal output termination isolating switch (KM) of card-type kilowatt-hour meter; In the live wire outlet line of card-type kilowatt-hour meter, first of isolating switch (KM) is often opened contact-making switch (K1) series connection first overload and the short-circuit release (F1); In the zero line outlet line of card-type kilowatt-hour meter, second of isolating switch (KM) is often opened contact-making switch (K2) series connection second overload and the short-circuit release (F2); First of isolating switch (KM) is often driven the contact-making switch (K1) and first overload and short-circuit release (F1) and is located in the first module box (A); Second often drives the contact-making switch (K2) and second overload and short-circuit release (F2) is located in second unit box (B); Isolating switch (KM) also comprises control circuit (8); The tripping coil of isolating switch (KM) and control circuit (8) are located in the 3rd unit box (C); The closure control voltage signal input end (IN) of isolating switch (KM) is the closure control voltage signal input end of control circuit (8), and the control signal output ends of control circuit (8) connects the control input end of the tripping coil (9) of isolating switch (KM).
2. the control device that is used with card-type kilowatt-hour meter according to claim 1, it is characterized in that: described control circuit (8) comprising: first diode (D1), second diode (D2), the 3rd diode (D3), the 4th diode (D4), first electrochemical capacitor (C1), second electrochemical capacitor (C4), time-delay electrochemical capacitor (C5), first electric capacity (C2), second electric capacity (C3), first resistance (R1), second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), triode (V1), stabilivolt (V2) and one-way SCR (SCR);
The anode of first diode (D1) is the closure control voltage signal input end of described control circuit (8), and the negative electrode of first diode (D1) is connected in series the base stage that meets triode (V1) behind first resistance (R1), second resistance (R2); The collector of triode (V1) connects the positive pole of second electrochemical capacitor (C4), the minus earth of second electrochemical capacitor (C4); The emitter of triode (V1) connects the anode of second diode (D2), the negative electrode connecting to neutral line (N) of second diode (D2); The negative electrode of stabilivolt (V2) connects the collector of triode (V1), and the anode of stabilivolt (V2) connects the emitter of triode (V1); The positive pole of first electrochemical capacitor (C1) meets the contact place of first resistance (R1) and second resistance (R2), and the negative pole of first electrochemical capacitor (C1) connects the anode of second diode (D2); The collector of triode (V1) connects the anode of the 4th diode (D4), and the negative electrode of the 4th diode (D4) is connected in series the positive pole that connects time-delay electrochemical capacitor (C5) behind the 4th resistance (R4); The negative pole order of time-delay electrochemical capacitor (C5) is to the negative electrode of controllable silicon (SCR); The negative electrode order of the 3rd diode (D3) is to the anode of controllable silicon (SCR), the anode of the 3rd diode (D3) line (L) of starting to exchange fire; The 3rd resistance (R3) is located between the anode of the anode of one-way SCR (SCR) and the 4th diode (D4), the negative electrode of one-way SCR (SCR) connects an end of the tripping coil (9) of isolating switch (KM), is the control input end of the tripping coil (9) of described isolating switch (KM); The other end connecting to neutral line (N) of tripping coil (9); The 5th resistance (R5) is in parallel with time-delay electrochemical capacitor (C5); Between the negative electrode of first electric capacity (C2) and the negative electrode of being located at the 3rd diode (D3) after second electric capacity (C3) is connected and one-way SCR (SCR).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103075847A CN101221675B (en) | 2007-12-30 | 2007-12-30 | Control device cooperated with plug-in type watt-hour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103075847A CN101221675B (en) | 2007-12-30 | 2007-12-30 | Control device cooperated with plug-in type watt-hour meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101221675A CN101221675A (en) | 2008-07-16 |
| CN101221675B true CN101221675B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103075847A Active CN101221675B (en) | 2007-12-30 | 2007-12-30 | Control device cooperated with plug-in type watt-hour meter |
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| Country | Link |
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| CN (1) | CN101221675B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058303A (en) * | 1991-08-29 | 1992-01-29 | 殷顺民 | Special protctive circuit for leakage of electric appliance casing |
| CN1329326A (en) * | 2000-06-15 | 2002-01-02 | 上海英孚特电子技术有限公司 | Multi-user power-driven terminal |
| CN2482256Y (en) * | 2001-06-20 | 2002-03-13 | 章柏良 | Phase-interruption leakage circuit breaker |
| CN1139817C (en) * | 1999-04-23 | 2004-02-25 | 北京Abb低压电器有限公司 | Control circuit system of card-type kilowatt-hour meter |
-
2007
- 2007-12-30 CN CN2007103075847A patent/CN101221675B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058303A (en) * | 1991-08-29 | 1992-01-29 | 殷顺民 | Special protctive circuit for leakage of electric appliance casing |
| CN1139817C (en) * | 1999-04-23 | 2004-02-25 | 北京Abb低压电器有限公司 | Control circuit system of card-type kilowatt-hour meter |
| CN1329326A (en) * | 2000-06-15 | 2002-01-02 | 上海英孚特电子技术有限公司 | Multi-user power-driven terminal |
| CN2482256Y (en) * | 2001-06-20 | 2002-03-13 | 章柏良 | Phase-interruption leakage circuit breaker |
Non-Patent Citations (2)
| Title |
|---|
| JP平2-16460A 1990.01.19 |
| JP特开2004-103542A 2004.04.02 |
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| CN101221675A (en) | 2008-07-16 |
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Owner name: PEOPLE APPLICANCE GROUP INSTRUMENT AND METER CO., Free format text: FORMER OWNER: PEOPLE ELECTRICAL APPLIANCES GROUP CO., LTD. Effective date: 20150616 |
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Effective date of registration: 20150616 Address after: 325604 people's Industrial Park, Liushi Town, Yueqing, Zhejiang (Yueqing Economic Development Zone) Patentee after: PEOPLE ELECTRIC APPLIANCE GROUP INSTRUMENT CO., LTD. Address before: 325604 Liushi people's Industrial Park, Zhejiang, Yueqing Patentee before: People Electrical Appliances Group Co., Ltd. |