CN201629265U - Arc-less device - Google Patents
Arc-less device Download PDFInfo
- Publication number
- CN201629265U CN201629265U CN2010201308498U CN201020130849U CN201629265U CN 201629265 U CN201629265 U CN 201629265U CN 2010201308498 U CN2010201308498 U CN 2010201308498U CN 201020130849 U CN201020130849 U CN 201020130849U CN 201629265 U CN201629265 U CN 201629265U
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- relay
- resistance
- oxide
- semiconductor
- metal
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Abstract
The utility model relates to an arc-less device which comprises a capacitor C3, a control system, a relay J1, a contact switch in a normally open state or a normally closed state, a resistor R7 and a follow current device, wherein the cathode of the capacitor C3 is connected with the contact switch, and the anode of the capacitor C3 is connected with the normally closed contact switch through the resistor R7; the control system is connected with the relay J1 and used for controlling the on/off status of the relay J1; and the follow current device is connected with a normally open contact of the relay. The arc-less device invented by the utility model can effectively absorb arc spark generated during the contact breakage of a contactor, and effectively absorb and release the counter potential of overvoltage generated by capacitive load in a contact breaking circuit. The device is completely independent in structure, can be mounted in any position, and is convenient and practical.
Description
Technical field
The utility model relates to a kind of direct current contact does not have the arc device, especially a kind of railway locomotive, vehicle, track traffic, electric motor car group, no arc device on the D.C. contactors such as harbour, oil field, mine of being used in.
Background technology
The electromagnetic contactor of using in the special equipment of occasions such as present railway and oil field, mine, if by electric current very big (more than the 600A), the general mode that increases arc-extinguish chamber that adopts is eliminated the effect of arc that contact produces, and for the contactor below the 600A, generally do not take the extinguishing arc measure, so the contactor failure rate is high, the contact life-span is very short.In addition, often electric pressure is very high for the motor of the contactor segmentation back-emf that inductive load produces when disconnecting, and can produce overvoltage to other electrical equipment in the same power circuit and impact.
Summary of the invention
The purpose of this utility model is to provide a kind of no arc device that can effectively absorb the electric arc of contact disjunction generation.
For achieving the above object, the utility model adopts a kind of no arc device, comprise a capacitor C3, control system 002, relay J 1, switch contacts that comprises Chang Kai and normally closed two states, resistance R 7, a current following device 003, wherein the negative pole of capacitor C3 connects switch contacts, the positive pole of capacitor C3 connects the normally closed interlock switch through resistance R 7, control system is connected the also keying of control relay J1 with relay J 1, current following device 003 is connected with relay normally open contact.When main noddle on contactor disconnected, control system received feedback signal, and to the relay coil charging, the normally open contact closure on the relay is with the current following device conducting of being made up of load motor winding and diode D6; In addition, when disconnecting owing to main noddle on contactor, capacitor C3 absorbs electric weight rapidly, and electric arc is caused no arc device.
The current following device 003 that further is set to of the present utility model, comprise a load motor winding and the circuit system that diode D6 constitutes, the effective electric weight that absorbs of releasing capacitor C3, guarantee that voltage can not suddenly change, therefore reach the purpose that effective absorption discharges the back-emf that inductive load produces in the same circuit.
The control system 002 that further is set to of the present utility model comprises an input, is connected to the positive pole of capacitor C 1, the positive pole and the relay J 1 of capacitor C 2 via rectifier diode D1 and rectifier diode D2, resistance R 1; The minus earth of capacitor C 1 and C2; A resistance R 2 in parallel on the resistance R 1; Comprise that also the rectifier diode D3 that is connected on the node 001 is connected via the base stage of resistance R 3 with triode T1; The base stage of triode T1 also is connected to the source electrode of metal-oxide-semiconductor via a resistance R 4, wherein the emitter of triode T1 is connected to the source electrode of metal-oxide-semiconductor, also comprises between the base stage of triode T1 and the source electrode of metal-oxide-semiconductor being connected with a voltage stabilizing didoe WD1; The drain electrode of metal-oxide-semiconductor is connected with the base electrode of resistance R 5 with triode T1 through the coil of relay J 1; The base electrode of triode T1 also links to each other with the grid of metal-oxide-semiconductor; Be connected with a resistance R 6 and a voltage stabilizing didoe WD2 between the grid of metal-oxide-semiconductor and the source electrode respectively; Comprise that also a diode D5 is connected in parallel in the drain electrode and source electrode of metal-oxide-semiconductor; Diode D4 of relay J 1 reversal connection plays the afterflow effect.
The utility model compared with prior art, main effect is embodied in:
1, the arc spark that effectively produces during the disjunction of absorbing contact device contact has increased useful life of contact;
2, the overvoltage back-emf that divides the capacitive load in the deenergizing to produce for contact can effectively absorb release, has reduced anti-
Gesture has reduced failure rate to the impact of other electrical equipment;
3, fully independent on this nothing arc apparatus structure, but the optional position independently install, practical and convenient.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model embodiment.
Embodiment
No arc device as shown in Figure 1, wherein the negative pole of capacitor C3 connects switch contacts, the positive pole of capacitor C3 connects the normally closed interlock switch through resistance R 7, and control system 002 is connected the also keying of control relay J1 with relay J 1, and current following device 003 is connected with relay normally open contact.When main noddle on contactor disconnected, control system 002 received feedback signal, and to the relay coil charging, the normally open contact closure on the relay is with current following device 003 conducting; Meanwhile, because the moment that main noddle on contactor disconnects, voltage can not suddenly change, and capacitor C3 absorbs electric weight rapidly, and electric arc is caused no arc device, has avoided the burn equivalent damage of electric arc to contact.
The current following device 003 that does not have the arc device as shown in Figure 1, by a load motor winding and the circuit system that diode D6 forms, can effectively discharge electric weight, guarantee that voltage can not suddenly change, the back-emf that the moment of having avoided main noddle on contactor to disconnect produces is to the impact of other electric component.
The control system 001 of no arc device comprises an input, is connected to the positive pole of capacitor C 1, the positive pole and the relay J 1 of capacitor C 2 via rectifier diode D1 and rectifier diode D2, resistance R 1; The minus earth of capacitor C 1 and C2; A resistance R 2 in parallel on the resistance R 1; Comprise that also the rectifier diode D3 that is connected on the node 001 is connected via the base stage of resistance R 3 with triode T1; The base stage of triode T1 also is connected to the source electrode of metal-oxide-semiconductor via a resistance R 4, wherein the emitter of triode T1 is connected to the source electrode of metal-oxide-semiconductor, also comprises between the base stage of triode T1 and the source electrode of metal-oxide-semiconductor being connected with a voltage stabilizing didoe WD1; The drain electrode of metal-oxide-semiconductor is connected with the base electrode of resistance R 5 with triode T1 through the coil of relay J 1; The base electrode of triode T1 also links to each other with the grid of metal-oxide-semiconductor; Be connected with a resistance R 6 and a voltage stabilizing didoe WD2 between the grid of metal-oxide-semiconductor and the source electrode respectively; Comprise that also a diode D5 is connected in parallel in the drain electrode and source electrode of metal-oxide-semiconductor; Diode D4 of relay J 1 reversal connection plays the afterflow effect.The operation principle process of this control system is as follows: when probe of contactor disconnects, the input output signal of controller, after diode D1, D2, D3 rectification, again through zener diode WD1 voltage stabilizing, the current potential of exporting after the voltage stabilizing touches triode T1, make its closed conducting, current potential after the conducting is again through the voltage stabilizing of voltage stabilizing didoe WD2, voltage after the voltage stabilizing is more than or equal to the voltage of predefined metal-oxide-semiconductor, touch the metal-oxide-semiconductor conducting, the coil of relay J 1 begins to absorb electric weight, adhesive normally open contact switch.
Claims (3)
1. no arc device, it is characterized in that: comprise a capacitor (C3), control system, a relay (J1), switch contacts, a resistance (R7), a current following device that comprises Chang Kai and normally closed two states, wherein the negative pole of capacitor (C3) connects switch contacts, the positive pole of capacitor (C3) connects the normally closed interlock switch through resistance (R7), control system is connected the also keying of control relay (J1) with relay (J1), current following device is connected with relay normally open contact.
2. no arc device according to claim 1 is characterized in that: described current following device is the circuit system that is made of a load motor winding and a diode (D6).
3. no arc device according to claim 1 and 2, it is characterized in that: described control system comprises an input, is connected to the positive pole of electric capacity (C1), the positive pole and the relay (J1) of electric capacity (C2) via rectifier diode (D1) and rectifier diode (D2), resistance (R1); Electric capacity (C1) and minus earth (C2); Resistance (R1) is gone up a resistance in parallel (R2); Comprise that also the rectifier diode (D3) that is connected on the node (001) is connected via the base stage of resistance (R3) with triode (T1); The base stage of triode (T1) also is connected to the source electrode of metal-oxide-semiconductor via a resistance (R4), wherein the emitter of triode (T1) is connected to the source electrode of metal-oxide-semiconductor, also comprises between the base stage of triode (T1) and the source electrode of metal-oxide-semiconductor being connected with a voltage stabilizing didoe (WD1); The drain electrode of metal-oxide-semiconductor is connected with the base electrode of resistance (R5) with triode (T1) through the coil of relay (J1); The base electrode of triode (T1) also links to each other with the grid of metal-oxide-semiconductor; Be connected with a resistance (R6) and a voltage stabilizing didoe (WD2) between the grid of metal-oxide-semiconductor and the source electrode respectively; Comprise that also a diode (D5) is connected in parallel in the drain electrode and source electrode of metal-oxide-semiconductor; Relay (J1) diode of reversal connection (D4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201308498U CN201629265U (en) | 2010-03-12 | 2010-03-12 | Arc-less device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201308498U CN201629265U (en) | 2010-03-12 | 2010-03-12 | Arc-less device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629265U true CN201629265U (en) | 2010-11-10 |
Family
ID=43060663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201308498U Expired - Fee Related CN201629265U (en) | 2010-03-12 | 2010-03-12 | Arc-less device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154616A (en) * | 2017-07-01 | 2017-09-12 | 合肥东玖电气有限公司 | A kind of arc-extinguishing harmonic-eliminating and overvoltage protection system |
-
2010
- 2010-03-12 CN CN2010201308498U patent/CN201629265U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154616A (en) * | 2017-07-01 | 2017-09-12 | 合肥东玖电气有限公司 | A kind of arc-extinguishing harmonic-eliminating and overvoltage protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20180312 |