CN202522921U - On-line monitor of moisture-removing heater apparatus - Google Patents
On-line monitor of moisture-removing heater apparatus Download PDFInfo
- Publication number
- CN202522921U CN202522921U CN2012201397715U CN201220139771U CN202522921U CN 202522921 U CN202522921 U CN 202522921U CN 2012201397715 U CN2012201397715 U CN 2012201397715U CN 201220139771 U CN201220139771 U CN 201220139771U CN 202522921 U CN202522921 U CN 202522921U
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- monitoring device
- current transformer
- firing equipment
- line monitoring
- magnet ring
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- Expired - Fee Related
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Abstract
The utility model discloses an on-line monitor of a moisture-removing heater apparatus. The moisture-removing heater apparatus comprises a temperature-humidity controller, and a temperature sensor and a humidity sensor connected to the temperature-humidity controller respectively, wherein a heater is connected with an output terminal of the temperature-humidity controller. The on-line monitor comprises a current transformer for collecting the current of the heater, and an alarm circuit connected with an output terminal of the current transformer. The on-line monitor of the moisture-removing heater apparatus has the advantages of simple circuit, low electricity consumption, convenience in maintenance and good alarm effect.
Description
Technical field
The utility model relates to a kind of monitoring device of electronic equipment, especially relates to a kind of monitor that drives damp firing equipment.
Background technology
For preventing that transformer station's outdoor " five little casees " is because of the harm of making moist or low temperature brings to equipment operation; All be equipped with at these device interiors and drive damp firing equipment; The damp firing equipment that drives commonly used is made up of temperature sensor, humidity sensor, temperature and humidity controller, heating element, is applied in the power equipment of transformer station widely.
Drive damp firing equipment normally whether, need the operator on duty to make regular check on.For a long time; Not only there is certain potential safety hazard in inspection to these equipment; Simultaneously also have the extremely low problem of the time-consuming labor productivity that brings, in the operator on duty general repercussion strong, especially in the transformer station of few people on duty; Want reliable and high-level efficiency completion inspection work, this is the realistic problem that must solve.Have now and drive damp firing equipment, can cause following problem owing to there is not suitable monitoring instrument:
(1) can't check the fault of controller own, like problems such as internal relay contact adhesions;
(2) long-term heating causes the heating board lead-in wire to burn, and can cause security incident;
(3) long-term heating causes the insulation of box equipment to descend serviceable life;
(4) it is dangerous to carry out heat detection with hand.
The utility model content
The utility model provides a kind of on-line monitoring instrument that drives damp well heater, can be widely used in the monitoring of driving damp well heater in the power equipment, and have warning function.
The technical scheme of the utility model is:
A kind of on-line monitoring device that drives damp firing equipment; Saidly drive temperature sensor and the humidity sensor that damp firing equipment comprises temperature and humidity controller and inserts this temperature and humidity controller respectively; The output terminal of said temperature and humidity controller is connected to heating element; Said on-line monitoring device comprises the current transformer that is used to gather said heating element electric current, and the warning circuit that is connected with said current transformer output terminal.
Drive damp firing equipment and can adopt prior art itself with regard to said, the utility model emphasis carries out the monitoring of duty to heating element wherein.
Said current transformer is made up of magnet ring and the coil that is wound on the magnet ring, and the input electric wire of said heating element or output electric wire are through the center of said magnet ring.
As preferably, said magnet ring is of a size of 160mm * 100mm * 5mm (external diameter * internal diameter * thickness).Magnet ring generally can adopt general Ferrite Material.
As preferably, said coil is the 250 circle enameled wires of the diameter 0.2mm on magnet ring around the home.
The output terminal of said current transformer is connected and is connected with the input end of warning circuit behind the electric capacity.
As preferably, said warning circuit comprises:
Control module is gathered the current signal of said current transformer output;
Pilot lamp is used to show the output signal of said control module;
Power-switching circuit, its output terminal is supplied power to said control module.
Control module is gathered the current signal of said current transformer output in the warning circuit, and compares with setting value, when the electric current of current transformer output exceeds setting value,
Said control module can adopt low power consumption integrated circuit CL4145.Said pilot lamp is a light emitting diode.
For can guarantee instrument and maintainer safety; The outside of said current transformer and warning circuit is covered with mounting box; Said mounting box is provided with the corresponding through hole in magnet ring center with said current transformer; Said pilot lamp is inlaid in the surface of mounting box, and the input end of said power-switching circuit is provided with the power lead that passes said mounting box.
The on-line monitoring utensil that the utility model drives damp firing equipment has that circuit is simple, power consumptive province, easy to maintenance, the effective beneficial effect of reporting to the police.
Description of drawings
Fig. 1 is the utility model on-line monitoring device and the circuit diagram that drives damp firing equipment monitored.
Embodiment
Combine accompanying drawing that the utility model is further described at present:
As shown in Figure 1; Existing drive damp firing equipment and comprise temperature sensor RT, humidity sensor RH, temperature and humidity controller K; The output terminal of temperature and humidity controller K meets heating element R3; The on-line monitoring device that the utility model drives damp firing equipment comprises the current transformer IOUT that is used to gather heating element R3 electric current, the warning circuit that is connected with current transformer IOUT output terminal.
Current transformer IOUT is made up of magnet ring and the coil that is wound on the magnet ring, and magnet ring adopts the ferrite of 160mm * 100mm * 5mm size, on the magnet ring with the enameled wire of diameter 0.2mm around 250 circles, the input electric wire of heating element R3 or output electric wire pass through the magnet ring center.A current transformer IOUT output terminal capacitor C 1 back of connecting is connected with the input end of warning circuit.
Warning circuit comprises:
Control module is gathered the current signal of said current transformer output;
Pilot lamp is used to show the output signal of said control module;
Power-switching circuit, its output terminal is supplied power to said control module.
Control module adopts low power consumption integrated circuit IC, and model is CL4145, through this IC the current signal of current transformer IOUT output is monitored.CL4145 is a kind of low power consumption control IC that is used to exchange the ground fault interruption device.This chip can detect earth fault danger, can protect in advance when leakage current or open circuit power lead appear in the equipment that this chip is connected to ac line in wet environment.
The pin 6 of this IC comprises the Zener benchmark of a 26V for its inside of power input, and the pin 7 of IC is the output terminal of operational amplifier, and this output terminal connects the pin 1 of IC through feedback resistance R1, and the pin 1 of IC also is the input termination capacitor C 1 of this warning circuit.The pin 5 of IC is the output terminal of this integrated circuit, and this output terminal arrives the ground output alarm signal through resistance R 4, pilot lamp LED.The diode clear in order to show, that present embodiment selects for use transparent base to glow.The pin 3 of IC, its inside is the reference voltage output end of 13V, its outside connects another output terminal of current transformer IOUT.The 4 pin ground connection of IC.
The pin 6 of IC is as the WV input end of this integrated circuit; Its working power is from power-switching circuit, and 220 volts of alternating currents of voltage that the input end of power-switching circuit connects heating element R3 two ends export control module to after bridge rectifier D 1, capacitor C 3 filtering, resistance R 2 step-downs.
The static normal power consumption of this integrated circuit is the 450uA quiescent current, also can be used for the 120V electric power system.
Because this integrated circuit directly obtains WV with 220 volts of step-downs; Be necessary for circuit board mounting box is set; With current transformer IOUT with comprise that the warning circuit of integrated circuit CL4145 and peripheral component is arranged in the mounting box, mounting box is provided with through hole, this through hole passes the magnet ring center of current transformer IOUT; Also just pass this magnet ring center in the time of the input electric wire of heating element R3 or this through hole of output electric wire process; Do not influence current transformer IOUT and gather current signal, LED is inlaid on the mounting box so that alarm indication, and the power lead that connects 220 volts of voltages passes mounting box.
The two ends of during use 220 volts of power leads being received heating element R3, the input electric wire of heating element R3 or output electric wire get final product through the through hole of mounting box, under the normal condition; When heating element R3 is in proper working order; LED is bright, if fault is arranged, like heating element R3 short circuit or open circuit; Then LED does not work, and the sensitivity of this integrated circuit CL4145 can realize through the resistance of feedback resistance R1.The utility model not only can be applied to power equipment and drive damp well heater, and can also be applied to other need be with on the equipment that drives damp well heater.
Claims (8)
1. on-line monitoring device that drives damp firing equipment; Saidly drive temperature sensor and the humidity sensor that damp firing equipment comprises temperature and humidity controller and inserts this temperature and humidity controller respectively; The output terminal of said temperature and humidity controller is connected to heating element; It is characterized in that said on-line monitoring device comprises the current transformer that is used to gather said heating element electric current, and the warning circuit that is connected with said current transformer output terminal.
2. the on-line monitoring device that drives damp firing equipment as claimed in claim 1 is characterized in that: said current transformer is made up of magnet ring and the coil that is wound on the magnet ring, and the input electric wire of said heating element or output electric wire are through the center of said magnet ring.
3. the on-line monitoring device that drives damp firing equipment as claimed in claim 2, it is characterized in that: said magnet ring is of a size of 160mm * 100mm * 5mm.
4. the on-line monitoring device that drives damp firing equipment as claimed in claim 3 is characterized in that: said coil is the 250 circle enameled wires of the diameter 0.2mm on magnet ring around the home.
5. the on-line monitoring device that drives damp firing equipment as claimed in claim 4 is characterized in that: the output terminal of said current transformer is connected and is connected with the input end of warning circuit behind the electric capacity.
6. like each described on-line monitoring device that drives damp firing equipment of claim 1～5, it is characterized in that: said warning circuit comprises:
Control module is gathered the current signal of said current transformer output;
Pilot lamp is used to show the output signal of said control module;
Power-switching circuit, its output terminal is supplied power to said control module.
7. the on-line monitoring device that drives damp firing equipment as claimed in claim 6 is characterized in that described pilot lamp is a light emitting diode.
8. the on-line monitoring device that drives damp firing equipment as claimed in claim 6; It is characterized in that; The outside of said current transformer and warning circuit is covered with mounting box; Said mounting box is provided with the corresponding through hole in magnet ring center with said current transformer, and said pilot lamp is inlaid in the surface of mounting box, and the input end of said power-switching circuit is provided with the power lead that passes said mounting box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201397715U CN202522921U (en) | 2012-04-01 | 2012-04-01 | On-line monitor of moisture-removing heater apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201397715U CN202522921U (en) | 2012-04-01 | 2012-04-01 | On-line monitor of moisture-removing heater apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522921U true CN202522921U (en) | 2012-11-07 |
Family
ID=47105863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201397715U Expired - Fee Related CN202522921U (en) | 2012-04-01 | 2012-04-01 | On-line monitor of moisture-removing heater apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202522921U (en) |
-
2012
- 2012-04-01 CN CN2012201397715U patent/CN202522921U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180401 |