CN105069990A - Automatic heating and moisture expelling alarming device for substation terminal box and mechanism box - Google Patents
Automatic heating and moisture expelling alarming device for substation terminal box and mechanism box Download PDFInfo
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- CN105069990A CN105069990A CN201510427275.8A CN201510427275A CN105069990A CN 105069990 A CN105069990 A CN 105069990A CN 201510427275 A CN201510427275 A CN 201510427275A CN 105069990 A CN105069990 A CN 105069990A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Abstract
The invention discloses an automatic heating and moisture expelling alarming device for a substation terminal box and a mechanism box, which comprises an AC incoming wire power supply, a heater and a control circuit, wherein the AC incoming wire power supply is connected with the heater via the control circuit. The automatic heating and moisture expelling alarming device for a substation terminal box and a mechanism box is characterized in that the control circuit comprises an indication lamp, an alarming horn, a resistor, a humidity sensor, an adjustable resistor, a triode, a diode, a zener diode, a thyristor, a time relay, an optocoupler and a current transformer. According to the automatic heating and moisture expelling alarming device for a substation terminal box and a mechanism box, the design is reasonable, the structure is simple, and manufacturing is easy; the heating and moisture expelling device inside the box can be automatically opened when certain humidity exists in the box and automatically closed when the box is dry, whether the heater works or not can be automatically checked, and when the heater fails or is damaged, the indication lamp and the alarming horn give a sound-light alarm; and thus the working efficiency of an operation and maintenance person is improved, and dangers such as scald and electric shock caused by traditional checking methods such as hand feeling and measurement by a multi-meter can be avoided.
Description
Technical field
The present invention relates to a kind of warning device, be specifically related to a kind of terminal box of transformer substation and mechanism case Automatic-heating drives damp warning device.
Background technology
The transformer station of electric system 220V and above generally all adopts outdoor open type to arrange, especially northern area cold wet in winter, solidifying frost, icing phenomenon is easily produced in terminal box, mechanism case, malfunction or the tripping of power equipment can be caused time serious, hidden trouble is caused to safe operation of power system.Therefore in terminal box, mechanism case, whether heating moisture separating device normally can run whether play safely very important effect to equipment, but traditional inspection method needs opener case, terminal chamber door one by one, and workload is huge, the at substantial time.To electric system variation, operations staff brings inconvenience.
Current transformer station checks that in terminal box, mechanism case, heating moisture separating device is always in running order, not only wastes electric energy and has a strong impact on life-span of well heater.Check that well heater means whether working properly are in addition and open that chamber door uses soon, hand is touched, the method for multimeter amount is carried out one by one, not only workload is large, and easily causes the danger of scalding or getting an electric shock.
Summary of the invention
Object of the present invention is exactly the defect existed for prior art, provides a kind of terminal box of transformer substation and mechanism case Automatic-heating to drive damp warning device.
Its technical scheme is: terminal box of transformer substation and mechanism case Automatic-heating drive damp warning device, comprise interchange incoming power, well heater and control circuit, exchange incoming power and connect well heater by control circuit, described control circuit comprises pilot lamp, alarming horn, resistance, humidity sensor, adjustable resistance, triode, diode, voltage stabilizing diode, controllable silicon, the time relay, optocoupler summation current transformer, one end of described interchange incoming power and one end of the time relay first contact, one end of the time relay second contact, second silicon controlled negative electrode, the negative output terminal of optocoupler and the elementary one end of current transformer are connected, the one end of the other end connection well heater that current transformer is elementary, the other end of the time relay first contact connects one end of pilot lamp, the other end of the time relay second contact connects one end of alarming horn, the described other end of interchange incoming power and the other end of pilot lamp, the other end of alarming horn, the positive pole of the second diode and the negative pole of the 4th diode are connected, the negative pole of the second diode and the negative pole of the first diode, one end of first silicon controlled anode and the first resistance is connected, the other end of the first resistance and the emitter of triode, one end of first adjustable resistance and the negative pole of voltage stabilizing diode are connected, the other end of the first adjustable resistance is connected with one end of the base stage of triode and humidity sensor, one end that collector and first silicon controlled of triode control pole and the second resistance is connected, the other end of humidity sensor and the positive pole of voltage stabilizing diode, the other end of the second resistance, first silicon controlled negative electrode, the positive pole of the 3rd diode and the positive pole of the 4th diode are connected, the positive pole of the first diode and the negative pole of the 3rd diode, one end of the time relay, one end of 3rd resistance and the other end of well heater are connected, the other end of the time relay connects the second silicon controlled anode, the cathode output end that the other end and second silicon controlled of the 3rd resistance control pole and optocoupler is connected, the electrode input end of optocoupler is connected with the negative pole of the 5th diode and one end of the second adjustable resistance, the other end of the second adjustable resistance connects one end of secondary transformer, and the other end of secondary transformer is connected with the positive pole of the 5th diode and the negative input of optocoupler.
Wherein, described humidity sensor is electric resistance moisture sensor.Described first controllable silicon is one-way SCR, and its rated current is 5A, withstand voltage 600V, and described second controllable silicon is bidirectional triode thyristor, and its rated current is 1A, withstand voltage 600V; Described current transformer is coiling on the magnet ring of an internal diameter 10mm, and the enameled wire of elementary diameter 1mm is worn around 10 circles, and the enameled wire of secondary diameter 0.08mm is worn around 1000 circles.The described time relay be establish beginning timing by cable, timing time arrives the closed time relay of back contact.The voltage stabilizing value of described voltage stabilizing diode is 10V; The resistance of described first resistance is 68K Ω, and the resistance of the second resistance and the 3rd resistance is 1K Ω; The model of the described first to the 5th diode is 1N4007; The model of described optocoupler is 4N25; The model of described triode is 8550; Described pilot lamp is the flashing trafficator of Alternating Current Power Supply; Described alarming horn is the high sound alarm loudspeaker of Alternating Current Power Supply.
The present invention compared with prior art, have the following advantages: reasonable in design, structure simply, easily makes, case interior heating moisture separating device can have during certain humidity in case to be opened automatically, can automatically close during case inner drying, and can self-verifying well heater work whether, when heater failure damages, pilot lamp and alarming horn send sound and light alarm.Not only improve operation maintenance personnel work efficiency, more can avoid the danger such as scald, electric shock because hand is touched, the conventional inspecting method of multimeter amount causes.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of an embodiment of the present invention.
Embodiment
With reference to Fig. 1, a kind of terminal box of transformer substation and mechanism case Automatic-heating drive damp warning device, comprise and exchange incoming power 1, well heater 2 and control circuit 3, exchange incoming power 1 and connect well heater 2 by control circuit 3, described control circuit 3 comprises pilot lamp L, alarming horn B, resistance R1-R3, humidity sensor RT, adjustable resistance W1W2, triode T, diode D1-D5, voltage stabilizing diode DW, controllable silicon KG1-KG2, time relay J, optocoupler GO summation current transformer HL, one end of described interchange incoming power 1 and one end of the time relay first contact J1, one end of the time relay second contact J2, the negative electrode of the second controllable silicon KG2, the negative output terminal of optocoupler GO and the elementary one end of current transformer HL are connected, the one end of the other end connection well heater 2 that current transformer HL is elementary, the other end of the time relay first contact J1 connects one end of pilot lamp L, the other end of the time relay second contact J2 connects one end of alarming horn B, the other end of described interchange incoming power 1 and the other end of pilot lamp L, the other end of alarming horn B, the positive pole of the second diode D2 and the negative pole of the 4th diode D4 are connected, the negative pole of the second diode D2 and the negative pole of the first diode D1, the anode of the first controllable silicon KG1 and one end of the first resistance R1 are connected, the other end of the first resistance R1 and the emitter of triode T, one end of first adjustable resistance W1 and the negative pole of voltage stabilizing diode DW are connected, the other end of the first adjustable resistance 1 is connected with one end of the base stage of triode T and humidity sensor RT, the collector of triode T is connected with one end of the control pole of the first controllable silicon KG1 and the second resistance R2, the other end of humidity sensor RT and the positive pole of voltage stabilizing diode DW, the other end of the second resistance R2, the negative electrode of the first controllable silicon KG1, the positive pole of the 3rd diode D3 and the positive pole of the 4th diode D4 are connected, the positive pole of the first diode D1 and the negative pole of the 3rd diode D3, one end of time relay J, one end of 3rd resistance R3 and the other end of well heater 2 are connected, the other end of time relay J connects the anode of the second controllable silicon KG2, the other end of the 3rd resistance R3 is connected with the control pole of the second controllable silicon KG2 and the cathode output end of optocoupler GO, the electrode input end of optocoupler GO is connected with one end of the negative pole of the 5th diode D5 and the second adjustable resistance W2, the other end of the second adjustable resistance W2 connects one end of current transformer HL level, the other end of current transformer HL level is connected with the positive pole of the 5th diode D5 and the negative input of optocoupler GO.Described humidity sensor RT is electric resistance moisture sensor.Described first controllable silicon KG1 is one-way SCR, and its rated current is 5A, withstand voltage 600V, and described second controllable silicon KG2 is bidirectional triode thyristor, and its rated current is 1A, withstand voltage 600V; Described current transformer HL is coiling on the magnet ring of an internal diameter 10mm, and the enameled wire of elementary diameter 1mm is worn around 10 circles, and the enameled wire of secondary diameter 0.08mm is worn around 1000 circles.Described time relay J be establish beginning timing by cable, timing time arrives the closed time relay of back contact.The voltage stabilizing value of described voltage stabilizing diode DW is 10V; The resistance of described first resistance R1 is 68K Ω, and the resistance of the second resistance R2 and the 3rd resistance R3 is 1K Ω; The model of described first to the 5th diode D1-D5 is 1N4007; The model of described optocoupler GO is 4N25; The model of described triode T is 8550; Described pilot lamp L is the flashing trafficator of Alternating Current Power Supply; Described alarming horn B is the high sound alarm loudspeaker of Alternating Current Power Supply.
Principle of work: elementary and well heater 2 enters the bridge rectifier that first to fourth diode D1-D4 forms by current transformer HL to exchange the two ends of incoming power 1, working current is passed through to triode again through the first resistance step-down, voltage stabilizing diode voltage stabilizing, when terminal box or mechanism case humidity little time, the resistance of humidity sensor RT is very large, triode T can not get biased and ends, first controllable silicon KG1 can not get triggering and also ends, and well heater 2 does not work without electricity.When terminal box or mechanism case humidity become large, the resistance of humidity sensor RT reduces, triode T obtains being biased and conducting, first controllable silicon KG1 also conducting, well heater 2 obtains electric work by current transformer HL elementary first to fourth diode D1-D4 and the first controllable silicon KG1, carries out heating and dehumidification in terminal box or mechanism case.At this moment, the current transformer HL that connected in electric power loop due to well heater 2 is elementary, the secondary of current transformer HL will have induced voltage to produce, this voltage driven optocoupler GO, makes its output terminal conducting, the control pole of short circuit second controllable silicon KG2 and negative electrode, second controllable silicon KG2 ends, time relay J does not work, and its contact is all in off-state, and pilot lamp L and alarming horn B does not all report to the police.When well heater 2 fault is damaged, the secondary non-inductive voltage of current transformer HL produces, optocoupler GO output terminal ends, the control pole of the second controllable silicon KG2 is triggered by the 3rd resistance R3, second controllable silicon KG2 conducting, time relay J works, and its contact is all closed, and pilot lamp L and alarming horn B sends sound and light alarm.Time relay J is set to time delay 3-10 seconds, for preventing wrong report.
The present invention is reasonable in design, structure simply, easily makes, case interior heating moisture separating device can have during certain humidity in case to be opened automatically, can automatically close during case inner drying, and can self-verifying well heater work whether, when heater failure damages, pilot lamp and alarming horn send sound and light alarm.Not only improve operation maintenance personnel work efficiency, more can avoid the danger such as scald, electric shock because hand is touched, the conventional inspecting method of multimeter amount causes.
Claims (5)
1. terminal box of transformer substation and mechanism case Automatic-heating drive damp warning device, comprise interchange incoming power, well heater and control circuit, exchange incoming power and connect well heater by control circuit, it is characterized in that: described control circuit comprises pilot lamp, alarming horn, resistance, humidity sensor, adjustable resistance, triode, diode, voltage stabilizing diode, controllable silicon, the time relay, optocoupler summation current transformer, one end of described interchange incoming power and one end of the time relay first contact, one end of the time relay second contact, second silicon controlled negative electrode, the negative output terminal of optocoupler and the elementary one end of current transformer are connected, the one end of the other end connection well heater that current transformer is elementary, the other end of the time relay first contact connects one end of pilot lamp, the other end of the time relay second contact connects one end of alarming horn, the described other end of interchange incoming power and the other end of pilot lamp, the other end of alarming horn, the positive pole of the second diode and the negative pole of the 4th diode are connected, the negative pole of the second diode and the negative pole of the first diode, one end of first silicon controlled anode and the first resistance is connected, the other end of the first resistance and the emitter of triode, one end of first adjustable resistance and the negative pole of voltage stabilizing diode are connected, the other end of the first adjustable resistance is connected with one end of the base stage of triode and humidity sensor, one end that collector and first silicon controlled of triode control pole and the second resistance is connected, the other end of humidity sensor and the positive pole of voltage stabilizing diode, the other end of the second resistance, first silicon controlled negative electrode, the positive pole of the 3rd diode and the positive pole of the 4th diode are connected, the positive pole of the first diode and the negative pole of the 3rd diode, one end of the time relay, one end of 3rd resistance and the other end of well heater are connected, the other end of the time relay connects the second silicon controlled anode, the cathode output end that the other end and second silicon controlled of the 3rd resistance control pole and optocoupler is connected, the electrode input end of optocoupler is connected with the negative pole of the 5th diode and one end of the second adjustable resistance, the other end of the second adjustable resistance connects one end of secondary transformer, and the other end of secondary transformer is connected with the positive pole of the 5th diode and the negative input of optocoupler.
2. terminal box of transformer substation according to claim 1 and mechanism case Automatic-heating drive damp warning device, it is characterized in that: described humidity sensor is electric resistance moisture sensor.
3. terminal box of transformer substation according to claim 1 and mechanism case Automatic-heating drive damp warning device, it is characterized in that: described first controllable silicon is one-way SCR, and its rated current is 5A, withstand voltage 600V, described second controllable silicon is bidirectional triode thyristor, and its rated current is 1A, withstand voltage 600V; Described current transformer is coiling on the magnet ring of an internal diameter 10mm, and the enameled wire of elementary diameter 1mm is worn around 10 circles, and the enameled wire of secondary diameter 0.08mm is worn around 1000 circles.
4. terminal box of transformer substation according to claim 1 and mechanism case Automatic-heating drive damp warning device, it is characterized in that: the described time relay be establish beginning timing by cable, timing time arrives the closed time relay of back contact.
5. terminal box of transformer substation according to claim 1 and mechanism case Automatic-heating drive damp warning device, it is characterized in that: the voltage stabilizing value of described voltage stabilizing diode is 10V; The resistance of described first resistance is 68K Ω, and the resistance of the second resistance and the 3rd resistance is 1K Ω; The model of the described first to the 5th diode is 1N4007; The model of described optocoupler is 4N25; The model of described triode is 8550; Described pilot lamp is the flashing trafficator of Alternating Current Power Supply; Described alarming horn is the high sound alarm loudspeaker of Alternating Current Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427275.8A CN105069990A (en) | 2015-07-21 | 2015-07-21 | Automatic heating and moisture expelling alarming device for substation terminal box and mechanism box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427275.8A CN105069990A (en) | 2015-07-21 | 2015-07-21 | Automatic heating and moisture expelling alarming device for substation terminal box and mechanism box |
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| CN105069990A true CN105069990A (en) | 2015-11-18 |
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Citations (6)
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| JP5095526B2 (en) * | 2008-06-27 | 2012-12-12 | 株式会社リコー | System abnormality confirmation method for state determination system, state determination system, and image forming apparatus |
| CN103390861A (en) * | 2013-08-06 | 2013-11-13 | 华北电力大学（保定） | Dehumidifying device of power grid terminal box |
| CN203455301U (en) * | 2013-09-10 | 2014-02-26 | 南通华铮隆钢业制造有限公司 | Dehumidifying device for production workshop |
| CN104181428A (en) * | 2014-08-29 | 2014-12-03 | 国网安徽省电力公司淮南供电公司 | Insulation online state monitoring device of zinc oxide arrester |
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2015
- 2015-07-21 CN CN201510427275.8A patent/CN105069990A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5095526B2 (en) * | 2008-06-27 | 2012-12-12 | 株式会社リコー | System abnormality confirmation method for state determination system, state determination system, and image forming apparatus |
| CN201402417Y (en) * | 2008-12-25 | 2010-02-10 | 上海柯耐弗电气有限公司 | Temperature controller with grounding malfunction leakage protection function |
| CN202103409U (en) * | 2011-07-07 | 2012-01-04 | 航亚电器（上海）有限公司 | Over-current protector for three-phase electronic motor |
| CN103390861A (en) * | 2013-08-06 | 2013-11-13 | 华北电力大学（保定） | Dehumidifying device of power grid terminal box |
| CN203455301U (en) * | 2013-09-10 | 2014-02-26 | 南通华铮隆钢业制造有限公司 | Dehumidifying device for production workshop |
| CN104181428A (en) * | 2014-08-29 | 2014-12-03 | 国网安徽省电力公司淮南供电公司 | Insulation online state monitoring device of zinc oxide arrester |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |