CN2171920Y - High-speed safety auto-multipling device of secondary fuse - Google Patents
High-speed safety auto-multipling device of secondary fuse Download PDFInfo
- Publication number
- CN2171920Y CN2171920Y CN 93219308 CN93219308U CN2171920Y CN 2171920 Y CN2171920 Y CN 2171920Y CN 93219308 CN93219308 CN 93219308 CN 93219308 U CN93219308 U CN 93219308U CN 2171920 Y CN2171920 Y CN 2171920Y
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- CN
- China
- Prior art keywords
- control circuit
- electronic switch
- fuse
- secondary fuse
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a high-speed safety device with automatic multiple connection for a secondary fuse. The utility model is composed of a secondary fuse, an electronic on-off control circuit, an electronic switch and a photocoupler. In the utility model, the photocoupler picks up the fusing signals of a main fuse and is led to a rear pole control circuit; the rear pole control circuit sends out alarm signals and leads the alarm signals to the electronic on-off control circuit, and then the secondary fuse is switched on at a high speed. When the obstacles of the circuits are not eliminated yet, efforts are made repeatedly to try switching on the electronic switch according to specified intervals through current limitation and sampling until the obstacles of the circuits are eliminated, and thus the secondary fuse is switched on quickly. After the main fuse is replaced, the electronic switch is switched off in an artificial manner, and the alarm signals are stopped.
Description
The utility model relates to a kind of automatic multiple devices of high-speed secure of secondary fuse, is used for various important control circuits.
Fuse is used for various device in the protective circuit, is a kind of indispensable electric component, after it is because of line fault fusing, needs often indulge in the interval from new replacing, mistakes and causes delay, so the following way of the employing that has.
The one, fuse itself adopts the PCT semi-conducting material, behind electric current overrate in the circuit, and the equipment heating, resistance increases, when generating heat to certain certain value, blocking circuit, when fault in the circuit was got rid of, temperature reduced, so energising as usual again.
To current blocking, required time is long from the electric current overrate for this device, is unfavorable for protecting power consumption equipment, simultaneously just can make the circuit multiple connection because of after waiting to lower the temperature, and also needs the long period, influences operating efficiency.
Another kind is to adopt the fuse mariages to change warning device automatically, and the principle of this device is that its terminal voltage makes appended relay adhesive after main fuse fusing, and automatic switching circuit is connected secondary fuse.
This device, equally also need through certain hour, secondary fuse is connected, in the important control circuit, if the circuit transient fault can not be recovered immediately, in this power-off time, tend to cause more serious loss, as the railway signal control circuit, power-off time was above 0.05 second, can make runaway electric circuit, signal can not open, and often causes the serious accident of general driving accident and locomotive overrun a signal easily, and is longer as the fault time in addition, after spare fuse is changed automatically, fusing once more, after fault is got rid of, row connection more fast, so this class fuse is also not ideal enough.
The purpose of this utility model is the automatic multiple devices of high-speed secure that a kind of secondary fuse will be provided, this device not only can be after main fuse fusing, circuit and secondary fuse are connected rapidly sent alarm signal, before fault is not got rid of, prevent that secondary fuse from burning, till connecting.
The purpose of this utility model is achieved in that the automatic multiple devices of the high-speed secure of this pair fuse, by secondary fuse, electronic switch control circuit, electronic switch, and photoelectrical coupler constitutes, pick up main fuse fusing signal with photoelectrical coupler, lead to back utmost point control circuit, this circuit is sent alarm signal and signal is led to electronic switch control circuit, connect secondary fuse at a high speed, if the circuit obstacle is not got rid of as yet, then through the current limliting sampling, attempt to open electronic switch repeatedly at interval in accordance with regulations, fault is got rid of in circuit, just rapidly secondary fuse is connected, after treating that main fuse is changed, artificially turn-off electronic switch again, stop alarm signal.
The utility model has following advantage:
1. after fault is got rid of, can make the multiple connection of circuit high speed, power consumption equipment is normally moved, the loss that minimizing causes because of power failure: because of adopting electronic control circuit, only need tens of microseconds, circuit can be connected by secondary fuse, and send alarm signal, so that in time change main fuse.
2. protect secondary fuse safe handling, do not fused, and make multiple connection timely: because of the current limliting sampler is housed in electronic circuit; and electronic switch control circuit; after secondary fuse uses, if electric current overrate still, can blocking-up automatically in the number microseconds; this device is promptly pressed predetermined interval then; constantly attempt by the electronic switch multiplex circuit, get rid of up to fault, electric current is in rated range; till the circuit connection, thereby protected secondary fuse.
3. alleviate maintenance circuit work, be convenient to search the position of fault: after this main fuse fusing, in this control circuit, continue to send alarm signal, be convenient in time change main fuse.
4. applied widely, implement easily: because of fuse is a requisite element in the current circuit, and this device is to adopt existing electric component, constitutes through being electrically connected.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:
Fig. 1 is the utility model circuit block diagram.
Below in conjunction with accompanying drawing, describe in detail:
The automatic multiple devices of the high-speed secure of this pair fuse is made of secondary fuse, electronic switch control circuit, electronic switch and photoelectrical coupler, and photoelectrical coupler makes both isolated between device power supply (DPS) and control power supply; Electronic switch control circuit by the electronic switch of photoelectrical coupler and auxiliary connection fuse, is connected with back level control circuit with the current-limiting protection device of connection device power supply by photoelectrical coupler respectively.
The utility model is the terminal voltage when picking up main fuse fusing, as the fusing signal, through photoelectric coupler isolation, the multiple devices action is reported to the police, and be retained to manual reset always, and its operation principle is as follows:
After main fuse 1 is because of fault fusing, equipment electricity primary voltage makes photoelectrical coupler 2 actions, coupler 2 makes back level control circuit 3 actions, back level control circuit 3 one sides continue to send the connection electronic switch signal to electronic switch control circuit 4, one side continues to send alarm signal to warning device 5, after electronic switch control circuit 4 is received the connection electronic switch signal, drive photoelectrical coupler 6 immediately, then coupler 6 is connected electronic switch 7, make device current through power consumption equipment 11, secondary fuse 8, electronic switch 7, current limliting sample resistance 9, form the loop, equipment normally moves.
After equipment fault is got rid of, need the artificial main fuse 1 of changing earlier, press reset switch K again, electronic switch 7 turn-offs immediately, and back level control circuit 3 stops to send signal to warning device 5, and warning stops, circuit reset.
If equipment fault is not got rid of, promptly flow through the electric current overrate of current limliting sample resistance 9, when then the terminal voltage of resistance 9 reaches the rated value of setting, drive photoelectrical coupler 10, the signal of coupler 10 makes electronic control circuit 4 actions, through photoelectrical coupler 6, electronic switch 7 is turn-offed.Setting-up time is pressed after the time-delay several seconds in electronic switch control circuit road 4, send the signal of opening electronic switch 7 through photoelectrical coupler 6 once more, if the circuitry fault does not disappear yet, sample resistance voltage must still be higher than rated value, photoelectrical coupler moves once more, electronic switch control circuit 4 turn-offs the signal of opening electronic switch 7 once more, and electronic switch is turn-offed.Because opening to current-limiting protection action from electronic switch, to make the electronic switch turn-off time be to finish in 1 microsecond; so secondary fuse can not fuse; have only when the disappearance of equipment road fault; current limliting sample resistance terminal voltage is less than rated value; photoelectrical coupler 10 is failure to actuate; electronic switch just can be opened, circuit clear, and 12 is control power supply among the figure.
Back level control circuit 3 adopts the TWH8778 element in the present embodiment, in order to realize self-closing and to confess rated current 1A alarm signal; Electronic switch control circuit 4 adopts CD4066 and TWH8778 element, in order to realize electronic switch control, current-limiting protection time-delay, multiple connection repeatedly automatically; Electronic switch 7 once-through types adopt BTS series Intelligent Power Module, and AC type adopts the light-operated bidirectional triode thyristor element that turn-offs.Owing to adopt photoelectric coupler isolation between control power supply and device power supply (DPS), so control circuit is protected the interface problem of no element.
Claims (1)
1, the automatic multiple devices of a kind of high-speed secure of secondary fuse, constituted by electronic switch control circuit (4), back level control circuit (3), warning device (5), electronic switch (7), secondary fuse (8), photoelectrical coupler and current limliting sample resistance (9), be it is characterized in that:
1) photoelectrical coupler (2) picks up main fuse (1) fusing signal, lead to back level control circuit (3), by the back level control circuit (3) of hand switch K control and connection control power supply (12), one side is connected with warning device (5), and one side is led to electronic switch control circuit (4);
2) electronic switch control circuit (4) one side is connected with electronic switch (7) by photoelectrical coupler (6), and one side is connected with current limliting sample resistance (9) by photoelectrical coupler (10) again;
3) secondary fuse (8), electronic switch (7) and current limliting sample resistance (9) are connected with power consumption equipment (11), form the loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219308 CN2171920Y (en) | 1993-07-22 | 1993-07-22 | High-speed safety auto-multipling device of secondary fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219308 CN2171920Y (en) | 1993-07-22 | 1993-07-22 | High-speed safety auto-multipling device of secondary fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2171920Y true CN2171920Y (en) | 1994-07-13 |
Family
ID=33798724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219308 Expired - Fee Related CN2171920Y (en) | 1993-07-22 | 1993-07-22 | High-speed safety auto-multipling device of secondary fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2171920Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507757C (en) * | 2004-06-03 | 2009-07-01 | 三星电子株式会社 | Fuser-controlling apparatus for generating a power synchronization signal and detecting power voltage |
-
1993
- 1993-07-22 CN CN 93219308 patent/CN2171920Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507757C (en) * | 2004-06-03 | 2009-07-01 | 三星电子株式会社 | Fuser-controlling apparatus for generating a power synchronization signal and detecting power voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |