CN201256127Y - High price/performance ratio DC contactor - Google Patents
High price/performance ratio DC contactor Download PDFInfo
- Publication number
- CN201256127Y CN201256127Y CNU2008201456488U CN200820145648U CN201256127Y CN 201256127 Y CN201256127 Y CN 201256127Y CN U2008201456488 U CNU2008201456488 U CN U2008201456488U CN 200820145648 U CN200820145648 U CN 200820145648U CN 201256127 Y CN201256127 Y CN 201256127Y
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- contactor
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- single phase
- small
- phase alternating
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Abstract
The utility model relates to a DC contactor with high cost-performance ratio, which comprises a voltage dependent resistor, a single-phase AC contactor coil, a single-phase AC contactor main contact, a small scale DC relay coil, a small scale DC relay normally opened contact, a small scale DC relay normally closed contact, a single-phase AC contactor coil current limiting resistor, a delay motion capacitance and a capacitor current limiting resistor. By utilizing the single-phase AC contactor to replace a DC contactor with the same capacity, using the voltage dependent resistor to limit electric arc voltage when two ends of the contact are broken, electric arc power is reduced when the contactor is broken, thereby arc-less breaking is realized, further, by utilizing the scheme of connecting the coil with the resistors in series to reduce current in holding state, energy can be greatly saved, thereby having the advantages of low cost, long service life, saving energy and the like.
Description
Affiliated technical field
The utility model relates to a kind of D.C. contactor of high performance-price ratio.
Background technology
The patent No. is that 01272976.0 Chinese utility model patent " intelligent hybrid D.C. contactor " is the monolithic processor controlled intelligent DC contactor of a kind of employings by people such as the Zhang Peiming invention of University of Fuzhou, and this D.C. contactor has no arc connection/disjunction, moves higher performance index such as pressure drop is little, functional reliability height.In addition; it by the patent No. of applications such as Zhang Yueren 200420003021.0 Chinese patent " DC electronic extinguisher "; its principle also is to adopt the IGBT purpose that reaches extinguishing arc in parallel with main contact, and its piezo-resistance in parallel has been the effect of protection IGBT, is not to be directly used in the main contact extinguishing arc.But problems such as said apparatus all exists, and cost is higher, structure is complicated, operation energy consumption is bigger, can not be applicable to and require the general application scenario that cost is very low, performance index are higher, the cost of particularly considering A.C. contactor and D.C. contactor differs greatly, and when cut-offfing DC circuit, D.C. contactor produces strong electric arc, therefore energy consumption in service is very big, technical scheme is not arranged preferably at present as yet to solve above-mentioned variety of issue.
The utility model content
The purpose of this utility model is to provide a kind of D.C. contactor of high performance-price ratio, and it helps significantly reducing cost, life-saving, energy efficient.
To achieve these goals, technical solutions of the utility model are to constitute like this: it comprises piezo-resistance, single phase alternating current (A.C.) contactor coil, single phase alternating current (A.C.) main noddle on contactor, small-sized DC relay coil, small-sized DC relay normally open contact, small-sized DC relay normally closed interlock, single phase alternating current (A.C.) contactor coil current-limiting resistance, deferred action electric capacity and capacitor current-limiting resistance; Above-mentioned each parts and power supply, the circuit connecting relation of control switch and load is as follows: power positive end respectively with an end of small-sized DC relay normally open contact, one end of single phase alternating current (A.C.) main noddle on contactor and an end of control switch join, the other end of control switch respectively with an end of capacitor current-limiting resistance, one end of small-sized DC relay coil, one end of one end of single phase alternating current (A.C.) contactor coil current-limiting resistance and small-sized DC relay normally closed interlock joins, one end of the other end of small-sized DC relay normally open contact and piezo-resistance joins, after joining, receives the other end of the other end of piezo-resistance and single phase alternating current (A.C.) main noddle on contactor an end of load again, after the other end of the other end of single phase alternating current (A.C.) contactor coil current-limiting resistance and small-sized DC relay normally closed interlock joins, receive an end of single phase alternating current (A.C.) contactor coil again, the other end of capacitor current-limiting resistance is received an end of deferred action electric capacity, after the other end of the other end of deferred action electric capacity and small-sized DC relay coil joins, receive the other end of single phase alternating current (A.C.) contactor coil and the other end of load again, receive power supply negative terminal at last again.
Because alternating current zero passage, and because inductive load will produce very high overvoltage when cut-offfing DC circuit, it is easy with its drop-out current arc extinguishing of capacity DC circuit to cut-off alternating current circuit, so the single phase alternating current (A.C.) contactor is much lower with capacity D.C. contactor cost.If but replace to solve the arc extinguishing problem with the capacity D.C. contactor with the single phase alternating current (A.C.) contactor, arc voltage when the utility model adopts piezo-resistance restriction contact two ends to cut-off, the arc energy when thereby the minimizing contactor cut-offs, under the situation that adopts A.C. contactor, still realize that few arc cut-offs, the pressure sensitive voltage of piezo-resistance can also can be lower than supply voltage a little more than supply voltage.D.C. contactor is identical at the energy of connection process and the consumption of sticking state, and in order to reduce the energy loss of sticking state, the utility model adopts the scheme that reduces electric current in sticking state coil series resistance, realizes energy-conservation significantly.
Therefore, than prior art, the utlity model has low cost, long-life, remarkable advantage such as energy-conservation, simple in structure, the application scenario very low applicable to the various requirement cost, that performance index are higher.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model.
The number in the figure explanation: Y is a piezo-resistance, K is the single phase alternating current (A.C.) contactor coil, and K1 is the single phase alternating current (A.C.) main noddle on contactor, and J is the small-sized DC relay coil, J1 is the small-sized DC relay normally open contact, J2 is a small-sized DC relay normally closed interlock, and R is a single phase alternating current (A.C.) contactor coil current-limiting resistance, and C is a deferred action electric capacity, R1 is the capacitor current-limiting resistance, A is a control switch, and D1 is a power positive end, and D2 is a power supply negative terminal.
Embodiment
Below in conjunction with specification drawings and specific embodiments the utility model content is elaborated:
As shown in Figure 1, the D.C. contactor of the utility model high performance-price ratio comprises piezo-resistance Y, single phase alternating current (A.C.) contactor coil K, single phase alternating current (A.C.) main noddle on contactor K1, small-sized DC relay coil J, small-sized DC relay normally open contact J1, small-sized DC relay normally closed interlock J2, single phase alternating current (A.C.) contactor coil current-limiting resistance R, deferred action capacitor C and capacitor current-limiting resistance R1;
Above-mentioned each parts and power supply, the circuit connecting relation of control switch A and load L is as follows: power positive end D1 respectively with the end of small-sized DC relay normally open contact J1, the end of single phase alternating current (A.C.) main noddle on contactor K1 and the end of control switch A join, the other end of control switch A respectively with the end of capacitor current-limiting resistance R1, the end of small-sized DC relay coil J, the end of the end of single phase alternating current (A.C.) contactor coil current-limiting resistance R and small-sized DC relay normally closed interlock J2 joins, the other end of small-sized DC relay normally open contact J1 and the end of piezo-resistance Y join, after joining, receives the other end of the other end of piezo-resistance Y and single phase alternating current (A.C.) main noddle on contactor K1 the end of load L again, after the other end of the other end of single phase alternating current (A.C.) contactor coil current-limiting resistance R and small-sized DC relay normally closed interlock J2 joins, receive the end of single phase alternating current (A.C.) contactor coil K again, the other end of capacitor current-limiting resistance R1 is received an end of deferred action capacitor C, after the other end of the other end of deferred action capacitor C and small-sized DC relay coil J joins, receive the other end of single phase alternating current (A.C.) contactor coil K and the other end of load L again, receive power supply negative terminal D2 at last again.
The course of work of the D.C. contactor of the above-mentioned high performance-price ratio of the utility model is as described below:
Control switch A closes a floodgate, when contactor is connected, single phase alternating current (A.C.) contactor coil K energising, contactor is in strong excitatory state, because the deferred action capacitor C has charging process, small-sized DC relay coil J time-delay is excitatory, small-sized DC relay time-delay adhesive, after single phase alternating current (A.C.) main noddle on contactor K1 closure, small-sized DC relay normally closed interlock J2 opens, and single phase alternating current (A.C.) contactor coil current-limiting resistance R seals in single phase alternating current (A.C.) contactor coil K loop, guarantee to move at contactor sticking state contactor energy-saving, follow small-sized DC relay normally open contact J1 closure, piezo-resistance Y place in circuit is finished the connection process;
When needs cut-off circuit, control switch A opens, single phase alternating current (A.C.) contactor coil K outage, because the electric charge on the deferred action capacitor C discharges to small-sized DC relay coil J, small-sized DC relay coil J delays outage, the time-delay of small-sized DC relay discharges, after single phase alternating current (A.C.) main noddle on contactor K1 opens, when single phase alternating current (A.C.) main noddle on contactor K1 two terminal voltages surpass the pressure sensitive voltage of piezo-resistance Y, the piezo-resistance Y operation, in certain voltage value, arc energy is very little with single phase alternating current (A.C.) main noddle on contactor K1 voltage limit, after single phase alternating current (A.C.) main noddle on contactor K1 and small-sized DC relay normally open contact J1 open, main circuit is cut-off fully, bonding cross streams main noddle on contactor K1 weares and teares seldom, and small-sized DC relay normally closed interlock J2 is closed during the course, and contactor returns to the state before connecting.
Claims (1)
1. the D.C. contactor of a high performance-price ratio, it is characterized in that: it comprises piezo-resistance (Y), single phase alternating current (A.C.) contactor coil (K), single phase alternating current (A.C.) main noddle on contactor (K1), small-sized DC relay coil (J), small-sized DC relay normally open contact (J1), small-sized DC relay normally closed interlock (J2), single phase alternating current (A.C.) contactor coil current-limiting resistance (R), deferred action electric capacity (C) and capacitor current-limiting resistance (R1);
Above-mentioned each parts and power supply, the circuit connecting relation of control switch (A) and load (L) is as follows: power positive end (D1) respectively with an end of small-sized DC relay normally open contact (J1), one end of one end of single phase alternating current (A.C.) main noddle on contactor (K1) and control switch (A) joins, the other end of control switch (A) respectively with an end of capacitor current-limiting resistance (R1), one end of small-sized DC relay coil (J), one end of one end of single phase alternating current (A.C.) contactor coil current-limiting resistance (R) and small-sized DC relay normally closed interlock (J2) joins, one end of the other end of small-sized DC relay normally open contact (J1) and piezo-resistance (Y) joins, after joining, receives the other end of the other end of piezo-resistance (Y) and single phase alternating current (A.C.) main noddle on contactor (K1) end of load (L) again, after the other end of the other end of single phase alternating current (A.C.) contactor coil current-limiting resistance (R) and small-sized DC relay normally closed interlock (J2) joins, receive an end of single phase alternating current (A.C.) contactor coil (K) again, the other end of capacitor current-limiting resistance (R1) is received an end of deferred action electric capacity (C), after the other end of the other end of deferred action electric capacity (C) and small-sized DC relay coil (J) joins, receive the other end of single phase alternating current (A.C.) contactor coil (K) and the other end of load (L) again, receive power supply negative terminal (D2) at last again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201456488U CN201256127Y (en) | 2008-09-22 | 2008-09-22 | High price/performance ratio DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201456488U CN201256127Y (en) | 2008-09-22 | 2008-09-22 | High price/performance ratio DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201256127Y true CN201256127Y (en) | 2009-06-10 |
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ID=40739455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201456488U Expired - Fee Related CN201256127Y (en) | 2008-09-22 | 2008-09-22 | High price/performance ratio DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201256127Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107507A (en) * | 2013-02-16 | 2013-05-15 | 福州大学 | Contactor integrating function and structure of electronic type protector |
| EP3190602A4 (en) * | 2014-09-03 | 2018-04-18 | Hitachi Industrial Equipment Systems Co., Ltd. | Electromagnetic contactor and power conditioner |
| CN111009875A (en) * | 2019-12-21 | 2020-04-14 | 文红军 | Safe power control system |
-
2008
- 2008-09-22 CN CNU2008201456488U patent/CN201256127Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107507A (en) * | 2013-02-16 | 2013-05-15 | 福州大学 | Contactor integrating function and structure of electronic type protector |
| CN103107507B (en) * | 2013-02-16 | 2016-03-30 | 福州大学 | The contactor of integrated electronic type protector function and structure |
| EP3190602A4 (en) * | 2014-09-03 | 2018-04-18 | Hitachi Industrial Equipment Systems Co., Ltd. | Electromagnetic contactor and power conditioner |
| CN111009875A (en) * | 2019-12-21 | 2020-04-14 | 文红军 | Safe power control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20130922 |