CN211830213U - Over-temperature automatic power-saving power supply equipment - Google Patents
Over-temperature automatic power-saving power supply equipment Download PDFInfo
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- CN211830213U CN211830213U CN202020849412.3U CN202020849412U CN211830213U CN 211830213 U CN211830213 U CN 211830213U CN 202020849412 U CN202020849412 U CN 202020849412U CN 211830213 U CN211830213 U CN 211830213U
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Abstract
The utility model discloses an automatic economize on electricity power supply unit of excess temperature, including first transformer, second transformer, rectifier filter circuit, voltage stabilizing unit, thermal element, amplifier circuit, relay and load output unit. The utility model discloses can break off transformer load power supply loop fast under the unusual condition of power supply unit temperature, avoid overflowing or the circuit harm and the equipment damage that the excess temperature caused, have the advantage of practicing thrift the energy consumption.
Description
Technical Field
The utility model relates to a power supply technical field especially relates to automatic power-saving power supply unit of excess temperature.
Background
The transformer is one of main electrical equipment in the power system, a power grid supplies power to a load through the transformer, the running state of the transformer directly determines the running safety and stability of the power system and the power supply stability, and the transformer generates copper loss and iron loss in the running process and converts the copper loss and the iron loss into heat energy to increase the temperature of the transformer. The current power supply equipment realizes overcurrent and overtemperature protection through the fuse, cannot realize accurate protection, and is very inconvenient because the equipment also needs to be disassembled when the fuse is replaced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide an over-temperature automatic power-saving power supply device, which comprises a first transformer, a second transformer, a rectifier filter circuit, a voltage stabilizing unit, a thermosensitive element, an amplifying circuit, a relay and a load output unit; the output end of the first transformer is connected with the input end of the second transformer and the load output unit; the first transformer is used for supplying power to a load; the output end of the second transformer, the rectifying filter circuit and the input end of the voltage stabilizing circuit are sequentially connected; the output end of the voltage stabilizing circuit is connected with the first end of the thermosensitive element and the first end of the relay; the second end of the thermosensitive element is connected with the input end of the amplifying circuit; the output end of the amplifying circuit is connected with the second end of the relay; the output end of the first transformer is connected with the relay contact and the load output unit; the first transformer is used for load power supply.
The beneficial effects of the utility model reside in that: the utility model discloses can break off transformer load power supply loop fast under the unusual condition of power supply unit temperature, avoid overflowing or the circuit harm and the equipment damage that the excess temperature caused, have the advantage of practicing thrift the energy consumption.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a circuit diagram of the present invention.
In the figure: t1 — first transformer; t2 — second transformer; d1 — first diode; d2 — second diode; d3 — third diode; d4 — fourth diode; d5-fifth diode; u1-zener diode; u2-switching tube; r-resistance; rt-thermistor; RP-adjustable resistance; rz-load; a J-relay; c-polarity capacitance.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the attached figure 1, the over-temperature automatic power-saving power supply device of the present invention comprises a first transformer, a second transformer, a rectifying and filtering circuit, a voltage stabilizing unit, a thermal sensitive element, an amplifying circuit, a relay and a load output unit; the output end of the first transformer is connected with the input end of the second transformer and the load output unit; the first transformer is used for supplying power to a load; the output end of the second transformer, the rectifying filter circuit and the input end of the voltage stabilizing circuit are sequentially connected; the output end of the voltage stabilizing circuit is connected with the first end of the thermosensitive element and the first end of the relay; the second end of the thermosensitive element is connected with the input end of the amplifying circuit; the output end of the amplifying circuit is connected with the second end of the relay; the output end of the first transformer is connected with the relay contact and the load output unit; the first transformer is used for load power supply.
Specifically, the power supply device further comprises a variable resistor; the first end of the variable resistor is connected with the second end of the thermosensitive element and the input end of the amplifying circuit; and the second end of the variable resistor is grounded with the adjustable input end.
Specifically, the rectifying and filtering circuit comprises a first diode, a second diode, a third diode, a fourth diode, a first resistor and a capacitor; the first output end of the first transformer is connected with the anode of the first diode and the cathode of the third diode; the cathode of the first diode is connected with the cathode of the second diode, the first end of the first resistor and the first end of the capacitor; the second end of the first resistor is connected with the first output end of the rectifying and filtering circuit; the second output end of the first transformer is connected with the anode of a second diode and the cathode of a fourth diode; and the anode of the third diode, the anode of the fourth diode and the second end of the capacitor are connected with the second output end of the rectifying and filtering circuit.
Specifically, a fifth diode is connected in parallel at two ends of the relay in a reverse direction.
Specifically, the voltage stabilizing unit comprises a three-terminal voltage stabilizer; the input end of the three-terminal voltage stabilizer is connected with the output end of the rectification filter circuit; and the output end of the three-terminal voltage stabilizer is connected with the first end of the thermosensitive element and the first end of the relay.
The thermistor is adopted as the thermosensitive element, the switching tube is 8752, the three-terminal regulator is LM7806, and the four rectifying diodes are IN 4001. When the temperature of the power supply equipment rises, the resistance value of the thermistor is reduced, the voltage of the input end of the switch tube rises to be more than 1.5V, the driving tube in the switch tube is conducted, the relay is excited and closed, the relay acts, and the first transformer is stopped to supply power for the load. In addition, a cooling unit is also arranged, the cooling unit adopts a motor fan, and a relay contact is connected with the input end of the motor; when the relay is excited and closed, the relay acts, the fan power supply is switched on, the motor fan starts to operate, once the temperature is reduced, the resistance value of the thermistor is gradually increased, the voltage of the input end of the switch tube is reduced to 1.5V, the driving tube in the switch tube is cut off at the moment, the motor fan stops operating, and when the power supply equipment is cooled, the motor fan realizes automatic intelligent operation control and saves energy consumption.
The utility model discloses can break off transformer load power supply loop fast under the unusual condition of power supply unit temperature, avoid overflowing or the circuit harm and the equipment damage that the excess temperature caused, have the advantage of practicing thrift the energy consumption.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (6)
1. The over-temperature automatic power-saving power supply equipment is characterized by comprising a first transformer, a second transformer, a rectifying and filtering circuit, a voltage stabilizing unit, a thermosensitive element, an amplifying circuit, a relay and a load output unit; the output end of the first transformer is connected with the input end of the second transformer and the load output unit; the first transformer is used for supplying power to a load; the output end of the second transformer, the rectifying filter circuit and the input end of the voltage stabilizing circuit are sequentially connected; the output end of the voltage stabilizing circuit is connected with the first end of the thermosensitive element and the first end of the relay; the second end of the thermosensitive element is connected with the input end of the amplifying circuit; the output end of the amplifying circuit is connected with the second end of the relay; the output end of the first transformer is connected with the relay contact and the load output unit; the first transformer is used for load power supply.
2. The over-temperature automatic power-saving power supply device according to claim 1, further comprising a variable resistor; the first end of the variable resistor is connected with the second end of the thermosensitive element and the input end of the amplifying circuit; and the second end of the variable resistor is grounded with the adjustable input end.
3. The over-temperature automatic power-saving power supply equipment according to claim 1, wherein the rectifying and filtering circuit comprises a first diode, a second diode, a third diode, a fourth diode, a first resistor and a capacitor; the first output end of the first transformer is connected with the anode of the first diode and the cathode of the third diode; the cathode of the first diode is connected with the cathode of the second diode, the first end of the first resistor and the first end of the capacitor; the second end of the first resistor is connected with the first output end of the rectifying and filtering circuit; the second output end of the first transformer is connected with the anode of a second diode and the cathode of a fourth diode; and the anode of the third diode, the anode of the fourth diode and the second end of the capacitor are connected with the second output end of the rectifying and filtering circuit.
4. The over-temperature automatic power-saving power supply equipment according to claim 1, wherein a fifth diode is reversely connected in parallel at two ends of the relay.
5. The over-temperature automatic power-saving power supply device according to claim 1, wherein the voltage stabilization unit includes a three-terminal regulator; the input end of the three-terminal voltage stabilizer is connected with the output end of the rectification filter circuit; and the output end of the three-terminal voltage stabilizer is connected with the first end of the thermosensitive element and the first end of the relay.
6. The over-temperature automatic power-saving power supply equipment according to claim 1, wherein the load output unit is further connected with a cooling device; and the output end of the relay is connected with the cooling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020849412.3U CN211830213U (en) | 2020-05-20 | 2020-05-20 | Over-temperature automatic power-saving power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020849412.3U CN211830213U (en) | 2020-05-20 | 2020-05-20 | Over-temperature automatic power-saving power supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211830213U true CN211830213U (en) | 2020-10-30 |
Family
ID=73020462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020849412.3U Active CN211830213U (en) | 2020-05-20 | 2020-05-20 | Over-temperature automatic power-saving power supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211830213U (en) |
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2020
- 2020-05-20 CN CN202020849412.3U patent/CN211830213U/en active Active
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