CN203881460U - Over-temperature detection device of lead joint - Google Patents
Over-temperature detection device of lead joint Download PDFInfo
- Publication number
- CN203881460U CN203881460U CN201420311770.3U CN201420311770U CN203881460U CN 203881460 U CN203881460 U CN 203881460U CN 201420311770 U CN201420311770 U CN 201420311770U CN 203881460 U CN203881460 U CN 203881460U
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- Prior art keywords
- electromagnetic relay
- over
- detection device
- armature
- temperature detection
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Abstract
The utility model discloses an over-temperature detection device of a lead joint. The over-temperature detection device comprises an electromagnetic relay and a metal substance which is pasted to a joint and melted at a temperature. Two ends of the metal substance are connected to two ends of a control circuit of the electromagnetic relay, a first power supply and a resistor R1 are connected in series on the control circuit, an upper end of an armature of the electromagnetic relay is provided with a contact, the armature is connected to one end of a second power supply, the other end of the second power supply is connected with one end of a buzzer through a resistor R2, and the other end of the buzzer is connected to the contact. The over-temperature detection device is advantageous in that price is low, and detection precision is high.
Description
Technical field
The utility model relates to excess temperature pick-up unit, particularly, relates to a kind of terminal excess temperature pick-up unit.
Background technology
in high pressure transmission line, the connection at terminal place is all generally adopt aluminium hydraulic pressed connecting pipe and hook the modes such as wire clamp.Terminal is in operational process, the phenomenon that its frequent occurrence temperature is too high.Excess Temperature, very easily causes the oxidation of joint, so that the increase of the quantity of heat production of joint, thereby blow joint, affect the operation of whole circuit.Because high-tension line is all generally to use tower erection wire, liftoff higher, and personnel can not be close, therefore, makes the temperature detection of people's butt junction just become a difficult problem.The temperature detection of existing butt junction has a lot of modes, for example, utilizes infrared radiation butt junction temperature to detect, and it does not directly contact with joint, but due to distance, its accuracy of detection is low, and price is high.
Utility model content
Technical problem to be solved in the utility model is to provide the terminal excess temperature pick-up unit that a kind of price is low and accuracy of detection is high.
The technical scheme in the invention for solving the above technical problem is:
A kind of terminal excess temperature pick-up unit, comprise electromagnetic relay and stick in joint and can molten metal when a kind of temperature material, the two ends of described metallics are connected to the two ends of the control circuit of electromagnetic relay, on described control circuit, be serially connected with the first power supply and resistance R 1, the upper end of the armature of described electromagnetic relay is provided with contact, described armature is connected on second source, the other end of second source is connected with hummer by resistance R 2, and the other end of described hummer is connected on contact.
As preferably, described second source is battery.
Further, described metallics is tin.
To sum up, the beneficial effects of the utility model are:
1, the utility model utilizes electromagnetic relay to reach the control to hummer to the control of armature, and it is simple in structure, and cost of manufacture is low.
2, the utility model utilizes the thawing of metallics to reach hummer is controlled, and its control accuracy is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark and corresponding parts title in accompanying drawing: 1, metallics; 2, electromagnetic relay; 3, contact; 4, hummer; 5, second source; 6, the first power supply.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done to detailed description further, but embodiment of the present utility model is not limited to this.
Embodiment 1:
A kind of terminal excess temperature pick-up unit as shown in Figure 1, comprise electromagnetic relay 2 and stick in joint and can molten metal material 1 when a kind of temperature, the two ends of described metallics 1 are connected to the two ends of the control circuit of electromagnetic relay 2, on described control circuit, be serially connected with the first power supply 6 and resistance R 1, the upper end of the armature of described electromagnetic relay 2 is provided with contact 3, described armature is connected on second source 5, the other end of second source 5 is connected with hummer 4 by resistance R 2, and the other end of described hummer 4 is connected on contact 3.
The course of work of the present embodiment is as follows:
When connector temperature does not reach alarm temperature, while not reaching the fusing point of metallics 1, the control circuit of electromagnetic relay 2 is closed-loop path, the magnet of electromagnetic relay 2 plays adhesive effect to armature, now, hummer, resistance R 2, loop, second source place are for disconnecting, and hummer is not worked.When connector temperature reaches alarm temperature, while reaching the fusing point of metallics 1, metallics fusing, comes off from joint, now, the control circuit of electromagnetic relay 2 disconnects, the magnet of electromagnetic relay 2 does not play sucking action to armature, and armature contacts with contact under the effect of spring, and now hummer, resistance R 2, loop, second source place are closed, hummer is started working, i.e. alarm.The precision of whole device is high, and simple in structure, and cost of manufacture is low, is easy to realize.
Embodiment 2:
A kind of terminal excess temperature pick-up unit as shown in Figure 1, the present embodiment has been done following refinement on the basis of embodiment, and described second source 5 is battery.
Described metallics 1 is tin.The fusing point of tin is 232 degrees Celsius, the temperature requirement of satisfied temperature alarm.
In specific embodiment, adopting tin is that metallics 1, the first power supply 6, second source adopt respectively 3.6V and 3.0V, and resistance R 1, resistance R 2 select respectively 10 ohm, 5 ohm can realize.
As mentioned above, can realize preferably the utility model.
Claims (3)
1. a terminal excess temperature pick-up unit, it is characterized in that: comprise electromagnetic relay (2) and stick in joint and can molten metal material (1) when a kind of temperature, the two ends of described metallics (1) are connected to the two ends of the control circuit of electromagnetic relay (2), on described control circuit, be serially connected with the first power supply (6) and resistance R 1, the upper end of the armature of described electromagnetic relay (2) is provided with contact (3), described armature is connected on second source (5), the other end of second source (5) is connected with hummer (4) by resistance R 2, the other end of described hummer (4) is connected on contact (3).
2. a kind of terminal excess temperature pick-up unit according to claim 1, is characterized in that: described second source (5) is battery.
3. a kind of terminal excess temperature pick-up unit according to claim 1 and 2, is characterized in that: described metallics (1) is tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311770.3U CN203881460U (en) | 2014-06-12 | 2014-06-12 | Over-temperature detection device of lead joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311770.3U CN203881460U (en) | 2014-06-12 | 2014-06-12 | Over-temperature detection device of lead joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881460U true CN203881460U (en) | 2014-10-15 |
Family
ID=51681947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311770.3U Expired - Fee Related CN203881460U (en) | 2014-06-12 | 2014-06-12 | Over-temperature detection device of lead joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034440A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司成都市新都供电分公司 | Over-temperature detection device for conductive wire joint |
-
2014
- 2014-06-12 CN CN201420311770.3U patent/CN203881460U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034440A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司成都市新都供电分公司 | Over-temperature detection device for conductive wire joint |
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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: 20141015 Termination date: 20200612 |