CN202906441U - Reclosing device with temperature detection function - Google Patents
Reclosing device with temperature detection function Download PDFInfo
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- CN202906441U CN202906441U CN 201220604393 CN201220604393U CN202906441U CN 202906441 U CN202906441 U CN 202906441U CN 201220604393 CN201220604393 CN 201220604393 CN 201220604393 U CN201220604393 U CN 201220604393U CN 202906441 U CN202906441 U CN 202906441U
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Abstract
The utility model discloses a reclosing device with a temperature detection function, which comprises a temperature detection circuit, a voltage sampling circuit, a current sampling circuit, a power supply circuit, a controller, a liquid crystal display and a protection actuator, wherein the temperature detection circuit is connected with the controller; the controller is connected with the voltage sampling circuit and the current sampling circuit; the power supply circuit is connected with the controller; and the protection actuator is connected with the controller. The temperature detection circuit carries out real-time detection on the temperature of electric equipment, and when the temperature exceeds the warning value set by the reclosing device, the actuator cuts off the circuit or gives an alarm, thereby preventing electric fire from happening.
Description
Technical field
The utility model relates to a kind of Protector for electric appliances, relates in particular to a kind of reclosing device with temperature detecting function.
Background technology
For adapting to the development of electric power enterprise, relaying protection and automatic safety device are necessary stable, operation is reliable.In route protection, the introducing of reclosing function and realization can in time be closed a floodgate the switch secondary behind circuit generation transient fault, strengthen the ability of transmission line fast recovery of power supply.But; traditional reclosing device only has the overload long delay; short circuit short time-delay; short circuit is instantaneous, undercurrent, three-phase imbalance; the basic control functions such as overvoltage/undervoltage protection; can't the real time temperature of main line and power consumption equipment be detected, cause power consumption equipment to cause fire because of excess Temperature, can not comprehensively bring protection to electric fault.
The utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of reclosing device with temperature detecting function, and it can detect in real time to the temperature of power consumption equipment, prevents the generation of electrical fire.
For reaching this purpose, the utility model by the following technical solutions:
A kind of reclosing device with temperature detecting function comprises: temperature sensing circuit, voltage sampling circuit, current sampling circuit, power circuit, controller, LCDs and protection actuator;
Described temperature sensing circuit is connected with controller, for detection of the real time temperature of power consumption equipment, exports to controller; Described controller is connected with voltage sampling circuit, current sampling circuit, for the treatment of the voltage signal of voltage sampling circuit collection and the current signal of current sampling circuit collection, result is exported to LCDs show; Described power circuit is connected with controller, is used to this reclosing device power supply; Described protection actuator is connected with controller, is used for carrying out corresponding operation according to the divide-shut brake control signal of controller output.
Especially, described temperature sensing circuit comprises that test section and signal amplifying part divide; Described test section comprises temperature sensor, the first resistance, the second resistance and the first electric capacity, and described signal amplifying part is divided and comprised operational amplifier, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the second electric capacity;
Wherein, one end ground connection of described temperature sensor, the other end and the node after an end of the first resistance is connected connect an end of the second resistance, the other end of described the first resistance connects power circuit, the in the same way input of another termination operational amplifier of described the second resistance, the reverse input end of described operational amplifier and the node after an end of the 3rd resistance is connected connect an end of the 4th resistance, the other end of described the 4th resistance and the node after the output of operational amplifier is connected connect the input of single-chip microcomputer, the other end of described the 3rd resistance connects an end of the 5th resistance, one end of the 6th resistance, the other end ground connection of described the 5th resistance, the other end of described the 6th resistance is connected with power supply.One end ground connection of described the first electric capacity, the other end is connected with the in the same way input of operational amplifier.One end of described the second electric capacity and node concatenation operation amplifier after described power circuit is connected, other end ground connection, an end of described the 7th resistance is connected with described power circuit, the output of other end concatenation operation amplifier.
Especially, described reclosing device with temperature detecting function also comprises signal receiving device, is connected with controller, is used for receiving by the control parameter of button to the controller input.
Especially, described controller is selected micro-control unit (Micro Control Unit, MCU).
The utility model detects in real time by the temperature of temperature sensing circuit to power consumption equipment, and when temperature was higher than the alarming value that reclosing sets, actuator prevented the generation of electrical fire with open circuit or warning from the source.
Description of drawings
The reclosing device structure chart with temperature detecting function that Fig. 1 provides for the utility model embodiment;
The temperature sensing circuit structure chart that Fig. 2 provides for the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with drawings and Examples.
Please refer to shown in Figure 1, the reclosing device structure chart with temperature detecting function that Fig. 1 provides for the utility model embodiment.
The reclosing device that has temperature detecting function in the present embodiment comprises temperature sensing circuit 1, voltage sampling circuit 2, current sampling circuit 3, power circuit 4, controller 5, LCDs 6, signal receiving device 7 and protection actuator 8.
Described temperature sensing circuit 1 is connected with controller 5, for detection of the real time temperature of power consumption equipment, exports to controller 5.As shown in Figure 2, described temperature sensing circuit 1 comprises that test section and signal amplifying part divide; Described test section comprises temperature sensor PT, the first resistance R 1, the second resistance R 2 and the first capacitor C 1, and described signal amplifying part is divided and comprised operational amplifier UA, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7 and the second capacitor C 2.Wherein, the end ground connection GND of described temperature sensor PT, the other end and the node after an end of the first resistance R 1 is connected connect an end of the second resistance R 2, the other end of described the first resistance R 1 connects power supply VCC, the in the same way input of another termination operational amplifier UA of described the second resistance R 2, the reverse input end of described operational amplifier UA and the node after an end of the 3rd resistance R 3 is connected connect an end of the 4th resistance R 4, the other end of described the 4th resistance R 4 and the node after the output of operational amplifier UA is connected connect the input of single-chip microcomputer, the other end of described the 3rd resistance R 3 connects an end of the 5th resistance R 5, one end of the 6th resistance R 6, the other end ground connection GND of described the 5th resistance R 5, the other end of described the 6th resistance R 6 is connected with described power supply VCC.One end ground connection GND of described the first capacitor C 1, the other end is connected with the in the same way input of operational amplifier UA.One end of described the second capacitor C 2 and node concatenation operation amplifier UA after described power supply VCC is connected, other end ground connection GND, an end of described the 7th resistance R 7 is connected with described power supply VCC, the output of other end concatenation operation amplifier UA.
Described controller 5 is connected with voltage sampling circuit 2, current sampling circuit 3, for the treatment of the voltage signal of voltage sampling circuit 2 collections and the current signal of current sampling circuit 3 collections, result is exported to LCDs 6 show.Controller described in the present embodiment 5 is selected micro-control unit (Micro ControlUnit, MCU).Voltage sampling circuit 21 is commonly used the three-phase voltage signal of power supply by the voltage transformer collection, and exports to controller 5 and process.5 pairs of described three-phase voltage signals of controller are processed, and obtain circuit three-phase voltage value Ua, Ub, Uc, and export to LCDs 6 demonstrations.Current sampling circuit 32 gathers the three-phase current signal of main circuit by current transformer, and exports to controller 5 and process.5 pairs of described three-phase current signals of controller are processed, and obtain circuit three-phase electricity flow valuve Ia, Ib, Ic, and export to LCDs 6 demonstrations.
Described power circuit 4 is connected with controller 5, is used to this reclosing device power supply.Described protection actuator 8 is connected with controller 5, is used for carrying out corresponding operation according to the divide-shut brake control signal of controller 5 outputs.The temperature value of 5 pairs of described three-phase voltage values of controller, three-phase electricity flow valuve and temperature sensing circuit 1 input is analyzed, according to the divide-shut brake control signal of analysis result to 8 outputs of protection actuator, the safety of protection power consumption equipment.Described signal receiving device 7 is connected with controller 5, is used for receiving by the control parameter of button to controller 5 inputs.Come page turning to inquire about every state parameter by button, can also carry out by button setting and the modification of customization parameter, simple and quick.
The technical solution of the utility model detects in real time by the temperature of temperature sensing circuit to power consumption equipment, and when temperature was higher than the alarming value that reclosing sets, actuator prevented the generation of electrical fire with open circuit or warning from the source.
Above-mentioned only is preferred embodiment of the present utility model and institute's application technology principle; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed in the protection range of the present utility model.
Claims (4)
1. the reclosing device with temperature detecting function is characterized in that, comprising: temperature sensing circuit, voltage sampling circuit, current sampling circuit, power circuit, controller, LCDs and protection actuator;
Described temperature sensing circuit is connected with controller, for detection of the real time temperature of power consumption equipment, exports to controller; Described controller is connected with voltage sampling circuit, current sampling circuit, for the treatment of the voltage signal of voltage sampling circuit collection and the current signal of current sampling circuit collection, result is exported to LCDs show; Described power circuit is connected with controller, is used to this reclosing device power supply; Described protection actuator is connected with controller, is used for carrying out corresponding operation according to the divide-shut brake control signal of controller output.
2. the reclosing device with temperature detecting function according to claim 1 is characterized in that, described temperature sensing circuit comprises that test section and signal amplifying part divide; Described test section comprises temperature sensor, the first resistance, the second resistance and the first electric capacity, and described signal amplifying part is divided and comprised operational amplifier, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the second electric capacity;
Wherein, one end ground connection of described temperature sensor, the other end and the node after an end of the first resistance is connected connect an end of the second resistance, the other end of described the first resistance connects power circuit, the in the same way input of another termination operational amplifier of described the second resistance, the reverse input end of described operational amplifier and the node after an end of the 3rd resistance is connected connect an end of the 4th resistance, the other end of described the 4th resistance and the node after the output of operational amplifier is connected connect the input of single-chip microcomputer, the other end of described the 3rd resistance connects an end of the 5th resistance, one end of the 6th resistance, the other end ground connection of described the 5th resistance, the other end of described the 6th resistance is connected with power supply, one end ground connection of described the first electric capacity, the other end is connected with the in the same way input of operational amplifier, one end of described the second electric capacity and node concatenation operation amplifier after described power circuit is connected, other end ground connection, one end of described the 7th resistance is connected with described power circuit, the output of other end concatenation operation amplifier.
3. the reclosing device with temperature detecting function according to claim 2 is characterized in that, also comprises signal receiving device, is connected with controller, is used for receiving by the control parameter of button to the controller input.
4. the reclosing device with temperature detecting function according to claim 3 is characterized in that, described controller is selected micro-control unit (Micro Control Unit, MCU).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604393 CN202906441U (en) | 2012-11-15 | 2012-11-15 | Reclosing device with temperature detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604393 CN202906441U (en) | 2012-11-15 | 2012-11-15 | Reclosing device with temperature detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202906441U true CN202906441U (en) | 2013-04-24 |
Family
ID=48127066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604393 Expired - Fee Related CN202906441U (en) | 2012-11-15 | 2012-11-15 | Reclosing device with temperature detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202906441U (en) |
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2012
- 2012-11-15 CN CN 201220604393 patent/CN202906441U/en not_active Expired - Fee Related
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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: 20130424 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |