CN203607815U - Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device - Google Patents
Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device Download PDFInfo
- Publication number
- CN203607815U CN203607815U CN201320618055.XU CN201320618055U CN203607815U CN 203607815 U CN203607815 U CN 203607815U CN 201320618055 U CN201320618055 U CN 201320618055U CN 203607815 U CN203607815 U CN 203607815U
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- circuit
- power supply
- relay
- energy storage
- storage capacitor
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Abstract
The utility model discloses a safety protection circuit of an energy storage circuit of an explosive discharge type large-current rapid on-off device. The safety protection circuit comprises a working power supply and a charging power supply of a charging circuit, the working power supply employs a switch power supply, the charging power supply comprises an insulation transformer, a voltage output end of the insulation transformer is connected with an AC input end of an AC/DC converter, a DC output end of the AC/DC converter is connected with an energy storage capacitor in parallel, two ends of the energy storage capacitor are connected with an automatic discharging circuit in parallel, the automatic discharging circuit comprises a relay and a large-power resistor, a normally closed contact of the relay spans two ends of the energy storage capacitor through a large-power resistor, a voltage output end of the switch power supply is connected with the relay of the automatic discharging circuit, two output ends of the automatic discharging circuit are connected with a silicon controlled rectifier drive circuit in parallel, the silicon controlled rectifier drive circuit is connected with a first anode and a control electrode of a silicon controlled rectifier, and a second anode of the silicon controlled rectifier is connected with a pulse transformer. According to the safety protection circuit, the charging circuit can perform charging rapidly and normally, and energy can also be completely released rapidly and safely after a system is in a shutdown state.
Description
Technical field
The utility model relates generally to electronic circuit field, relates in particular to a kind of quick-fried safety protective circuit that unloads formula heavy current rapid on-off apparatus accumulator.
Background technology
In electric power system, the quick-fried formula heavy current rapid on-off apparatus that unloads can limit the large electric current of the high harm of short circuit effectively as the power supply unit that cut-offs load current and short circuit current, safe operating life that can extension device, improve the reliability of system power supply and extend time between overhauls(TBO) etc. of switch, have that simple and ingenious structure, volume are little, high reliability.
Its control mode is exactly the variation of measurement and control unit real time monitoring load current, and in the time being short-circuited fault, measurement and control unit control energy-storage travelling wave tube is to pulsation transformation repid discharge, thereby ignites fast pontic disjunction.
In traditional design, the energy voltage of energy storage section is up to more than 300V, and after system is stopped transport, due to the disconnection of control loop, this energy cannot discharge.If now maintainer overhauls with regard to likely touching this high-tension line and causes the danger of getting an electric shock or touch and cause subelement impact failure because of other system.
Utility model content
In order to guarantee have enough energy storage effects to drive ignition pontic after system puts into operation; system safety after guaranteeing again to stop transport; the utility model provides a kind of quick-fried safety protective circuit that unloads formula heavy current rapid on-off apparatus accumulator; after system puts into operation; automatic discharge circuit and system disconnect; charging circuit can be charged normal fast, and can quickly and safely energy be discharged completely after system is stopped transport.
The utility model is achieved through the following technical solutions:
The quick-fried safety protective circuit that unloads formula heavy current rapid on-off apparatus accumulator, it is characterized in that: include working power, the charge power supply of charge circuit, working power adopts Switching Power Supply, charge power supply includes isolating transformer, the voltage output end of isolating transformer connects the ac input end of AC/DC converter, a DC output end storage capacitor C1 in parallel of AC/DC converter, the two ends automatic discharge circuit in parallel of storage capacitor C1, automatic discharge circuit includes relay and high-power resistance R1, the normally-closed contact of relay is connected across storage capacitor C1 two ends by high-power resistance R1, the voltage output end of Switching Power Supply connects the relay of automatic discharge circuit, the two outputs controllable silicon drive circuit in parallel of automatic discharge circuit, controllable silicon drive circuit connects the silicon controlled first anode, control the utmost point, silicon controlled second plate connects pulse transformer.
The utility model has the advantages that:
The utility model can charge normal charging circuit fast, and can quickly and safely energy be discharged completely after system is stopped transport.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of automatic discharge circuit.
Embodiment
As Fig. 1, 2, the quick-fried safety protective circuit that unloads formula heavy current rapid on-off apparatus accumulator, include working power, the charge power supply of charge circuit, working power adopts Switching Power Supply 1, charge power supply includes isolating transformer 2, the voltage output end of isolating transformer 2 connects the ac input end of AC/DC converter 3, a DC output end storage capacitor C1 in parallel of AC/DC converter 3, the two ends automatic discharge circuit 4 in parallel of storage capacitor C1, automatic discharge circuit 4 includes relay 8 and high-power resistance R1, the normally-closed contact of relay 8 is connected across storage capacitor C1 two ends by high-power resistance R1, the voltage output end of Switching Power Supply 1 connects the relay 8 of automatic discharge circuit 4, the two outputs controllable silicon drive circuit 5 in parallel of automatic discharge circuit 4, controllable silicon drive circuit 5 connects the first anode of controllable silicon 6, control the utmost point, the second plate of controllable silicon 6 connects pulse transformer 7.
In the utility model, the working power of system and the charge power supply of charge circuit are two respectively independent loops, and by two independently sky open control; Automatic discharge circuit is made up of with high-power resistance R1 relay 8; The normally-closed contact of relay 8 is connected across storage capacitor C1 two ends by high-power resistance R1, utilizes working power control relay; The power supply of first devoting oneself to work while putting into operation, now relay 8 electric, normally-closed contact disconnects, discharge loop departs from from system, then drops into charge power supply, can be full of energy to electric capacity rapidly; When stoppage in transit, first cut off charge power supply, and then disconnect working power, now working power disappears, relay 8 normally-closed contacts are connected, be discharge loop connecting system, according to prior design, the energy on electric capacity can be within the several seconds discharge off, as shown in Figure 2: formed discharge loop by capacitor C1 and resistance R 1, according to T=R*C formula, because the requirement that capacitance has become according to pulse is selected, so electric capacity both end voltage discharges Bi Suoxu whenabouts after just can determining power-off by change resistance.
Claims (1)
1. the quick-fried safety protective circuit that unloads formula heavy current rapid on-off apparatus accumulator, it is characterized in that: include working power, the charge power supply of charge circuit, working power adopts Switching Power Supply, charge power supply includes isolating transformer, the voltage output end of isolating transformer connects the ac input end of AC/DC converter, a DC output end storage capacitor C1 in parallel of AC/DC converter, the two ends automatic discharge circuit in parallel of storage capacitor C1, automatic discharge circuit includes relay and high-power resistance R1, the normally-closed contact of relay is connected across storage capacitor C1 two ends by high-power resistance R1, the voltage output end of Switching Power Supply connects the relay of automatic discharge circuit, the two outputs controllable silicon drive circuit in parallel of automatic discharge circuit, controllable silicon drive circuit connects the silicon controlled first anode, control the utmost point, silicon controlled second plate connects pulse transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320618055.XU CN203607815U (en) | 2013-09-30 | 2013-09-30 | Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320618055.XU CN203607815U (en) | 2013-09-30 | 2013-09-30 | Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607815U true CN203607815U (en) | 2014-05-21 |
Family
ID=50720477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320618055.XU Expired - Fee Related CN203607815U (en) | 2013-09-30 | 2013-09-30 | Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178654A (en) * | 2021-12-23 | 2022-03-15 | 中国核动力研究设计院 | Welding circuit and portable adjustable impulse welding machine |
-
2013
- 2013-09-30 CN CN201320618055.XU patent/CN203607815U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178654A (en) * | 2021-12-23 | 2022-03-15 | 中国核动力研究设计院 | Welding circuit and portable adjustable impulse welding machine |
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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 |
Granted publication date: 20140521 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |