CN2321036Y - Distribution bus overtemperature warning device - Google Patents
Distribution bus overtemperature warning device Download PDFInfo
- Publication number
- CN2321036Y CN2321036Y CN 97232241 CN97232241U CN2321036Y CN 2321036 Y CN2321036 Y CN 2321036Y CN 97232241 CN97232241 CN 97232241 CN 97232241 U CN97232241 U CN 97232241U CN 2321036 Y CN2321036 Y CN 2321036Y
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- CN
- China
- Prior art keywords
- circuit
- adopts
- overtemperature
- distribution bus
- series
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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 an alarm device of the temperature measurement and the temperature alarm for a distribution bus in the electric field. The control circuit of the utility model comprises a power circuit, a temperature detection circuit connected in series with the power circuit, a switch circuit and an alarm circuit which is connected with the output terminal of th switch circuit. The power circuit is connected with the input terminal of the switch circuit after connected with the temperature detection circuit; light alarm can also be added in the alarm circuit. The alarm device of the utility model can automatically alarm when the temperature of the connection position of the bus surpasses a limit value, which is safe, practical and timely.
Description
The utility model relates to a kind of power domain distribution bus temperature detection, overtemperature alarm device, belongs to the electric power pick-up unit.
In the power domain, the distribution bus connection, owing to connecting improper or reasons such as corrosion, weathering often cause loose contact, local temperature is too high and burn circuit, in order to find that in time this phenomenon takes place, generally be to be fixed with the warm wax disk(-sc) of examination in the bus junction,, just can make the wax disk(-sc) fusing when this junction temperature raises, make when the people makes an inspection tour this place and can find when detecting, and adopt remedial measures, kind of the artificial observation mode of executing has manyly not to be made, and tends to that untimely safety in production brings hidden danger to distribution because of detecting.
It is a kind of safe and practical in time and when surpassing the distribution bus overtemperature attention device that the temperature limit definite value just can be reported to the police automatically that the purpose of this utility model is to provide.
The purpose of this utility model is achieved through the following technical solutions: a kind of distribution bus overtemperature attention device, include housing, operation circuit, its special character is that described operation circuit includes power circuit, with the temperature sensing circuit of power circuit serial connection, on-off circuit, the warning circuit that links to each other with the on-off circuit output terminal, power circuit then links to each other with the on-off circuit input end with the temperature sensing circuit serial connection.
Mechanism is: attention device is placed on the distribution bus junction.When temperature surpassed setting value, the temperature sensing circuit action that is connected in series with power circuit added on-off circuit with power supply, the on-off circuit conducting, and on-off circuit output control signal makes warning circuit work, sends alerting signal.
Described power circuit adopts battery or inductive coil and commutator tube to provide galvanic current to press; Described temperature sensing circuit adopts bimetallic strip sensor or thermistor; Described on-off circuit adopts speech IC, and described warning circuit adopts the triode of collector series connection loudspeaker to constitute, and transistor base is connected in series to the on-off circuit output terminal by current-limiting resistance.
Also can be provided with optical alarm circuit in the described warning circuit, be connected in series the back with resistance and, send the constant ruddiness of reporting to the police during overtemperature to the input end of on-off circuit by light emitting diode.
Above-mentioned optical alarm circuit also can adopt the integrated oscillator of output terminal band luminotron to constitute, and the power end of integrated oscillator is connected to the input end of on-off circuit, and integrated oscillator also can be made of discrete component, sends the warning ruddiness of interruption during overtemperature.
Distribution bus overtemperature attention device of the present utility model can be reported to the police when bus junction temperature surpasses limit value automatically, safe and practical in time, and can realize that acousto-optic reports to the police simultaneously.
Description of drawings is as follows:
Fig. 1-the utility model frame principle figure;
Fig. 2-embodiment 1 electrical schematic diagram;
Fig. 3-embodiment 2 electrical schematic diagrams;
Fig. 4-embodiment 3 electrical schematic diagrams.
Provide embodiment of the present utility model below in conjunction with accompanying drawing, be used for that the utility model will be further described.
The overtemperature attention device of present embodiment can carry out audible alarm automatically when bus junction temperature surpasses limit value.
Claims (5)
1, a kind of distribution bus overtemperature attention device, include housing, operation circuit, it is characterized in that the warning circuit (4) that described operation circuit includes power circuit (1), the temperature sensing circuit (2) with power circuit serial connection, on-off circuit (3), links to each other with the on-off circuit output terminal, power circuit (1) is connected in series with temperature sensing circuit (2) and then links to each other with on-off circuit (3) input end.
2, according to the described a kind of distribution bus overtemperature attention device of claim 1, it is characterized in that described power circuit (1) adopts battery (E), described temperature sensing circuit adopts bimetallic strip sensor (K), described on-off circuit (3) adopts speech IC (IC1), described warning circuit (4) adopts the triode (VT1) of collector series connection loudspeaker to constitute, and transistor base is connected in series to the on-off circuit output terminal by current-limiting resistance (R1).
3, according to the described a kind of distribution bus overtemperature attention device of claim 1, it is characterized in that described power circuit (1) adopts inductive coil and commutator tube to get direct supply, temperature sensing circuit (2) adopts thermistor (R2), on-off circuit (3) adopts speech IC (IC1), warning circuit (4) adopts the triode (VT1) of collector series connection loudspeaker (Y) to constitute, and (VT1) base stage is connected in series to on-off circuit (3) output terminal through current-limiting resistance (R1).
4, according to claim 1 or 2 or 3 described a kind of distribution bus overtemperature attention devices, it is characterized in that also being provided with in the described warning circuit (4) optical alarm circuit (5), be connected in series the back with resistance (R3) and constitute to the input end of on-off circuit (3) by light emitting diode (LED1).
5, according to claim 1 or 2 or 3 described a kind of distribution bus overtemperature attention devices, it is characterized in that also being provided with in the described warning circuit (4) optical alarm circuit (5), integrated oscillator (IC2) by output terminal band luminotron (LED1) constitutes, and power end (IC2) is connected to the input end of on-off circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232241 CN2321036Y (en) | 1997-12-08 | 1997-12-08 | Distribution bus overtemperature warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232241 CN2321036Y (en) | 1997-12-08 | 1997-12-08 | Distribution bus overtemperature warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321036Y true CN2321036Y (en) | 1999-05-26 |
Family
ID=33944083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97232241 Expired - Fee Related CN2321036Y (en) | 1997-12-08 | 1997-12-08 | Distribution bus overtemperature warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321036Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022488B (en) * | 2014-05-20 | 2017-10-17 | 江苏大学 | The on-line monitoring and automatic safety device of high-power electric system busbar overheat |
-
1997
- 1997-12-08 CN CN 97232241 patent/CN2321036Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022488B (en) * | 2014-05-20 | 2017-10-17 | 江苏大学 | The on-line monitoring and automatic safety device of high-power electric system busbar overheat |
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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 |