CN205246223U - Based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system - Google Patents
Based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system Download PDFInfo
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- CN205246223U CN205246223U CN201521009412.8U CN201521009412U CN205246223U CN 205246223 U CN205246223 U CN 205246223U CN 201521009412 U CN201521009412 U CN 201521009412U CN 205246223 U CN205246223 U CN 205246223U
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- contact temperature
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- camera lens
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Abstract
The utility model provides a based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system, the radiation infrared region intra -area of isolating switch contact one side of this non -contact temperature measurement system is equipped with camera lens, light filter, thermoelectric battery sensor in proper order, and processing unit is connected in compensating through the cold junction all the way of thermoelectric battery sensor, and another way loops through amplification and filtering circuit, analog to digital conversion circuit connects among the processing unit, pass through the light filter with camera lens received infrared light and get into the thermoelectric battery sensor, through showing in the mechanism shows the processing data after, pass to on or the terminal store in the printing save. The beneficial effects are that this system has increased non -contacting pickup, the real -time supervision of contact temperature, can just can know in 1-2 second whether normal the contact temperature is, can in time make and judging and the maintenance, adopts the isolator life -span of real time monitoring contact temperature to increase by 1.3-1.5 times.
Description
Technical field
The utility model is realized the temperature inspection monitoring to high voltage isolation switch contact, by adoptingMeasure the temperature difference with contactless thermoelectric pile, by design compensation circuit, amplifying circuit etc. willTemperature value is converted to magnitude of voltage, facilitates measurement and the monitoring of temperature signal, ensures isolating switchContact is worked under normal circumstances.
Background technology
High voltage isolator is as the high-voltage electrical equipment of use amount maximum in high-voltage contact net,Main function is buffer action, and in high voltage isolator use procedure, isolating switchContact can because divide-shut brake not in place or itself mechanical wear produce variations in temperature.
At present isolating switch does not directly carry out temperature detection, unique making to its contact mostlyWith method may be irregular selective examination, manual detection. For switch touching in serviceBecause a variety of causes causes, contact temperature is overheated does not have device and a system that can detect in time to head,After long-play, can seriously cause the variable color of contact, softening, also can cause the inclined to one side of displacementFrom, this is just unfavorable for handling safety and the plant maintenance of isolating switch. Adopt this thermoelectric pileNon-contact temperature sensor, monitor isolation switch contact temperature, can constantly readTo the temperature when front contact, for there is contact, overheated phenomenon is processed in time, avoidsContact temperature is too high and affect switching manipulation safety, has also saved and has irregularly gone selective examination to keep apartClose contact temperature.
Summary of the invention
For structural deficiency in prior art, the purpose of this utility model is to provide a kind of based on heatPile principle is to high voltage isolator non-contact temperature measuring system, be beneficial to solve isolating switch because ofFor deciliter not in place or mechanical wear cause the overheated problem of contact, can monitor contactTemperature value, deciliter safety of guarantee isolating switch, facilitates the maintenance of equipment.
For achieving the above object, the technical solution adopted in the utility model is to provide a kind of based on thermoelectric pilePrinciple is to high voltage isolator non-contact temperature measuring system, wherein: this non-contact temperature measuring system bagDraw together isolating switch, camera lens, optical filter, thermopile sensor, cold junction compensation, amplification filteringCircuit, analog to digital conversion circuit, processing unit, mechanism show, terminal stores, described everyIn the radiated infrared region of switch contact one side, be provided with successively camera lens, optical filter, thermoelectric pileSensor, the cold junction compensation of leading up to of described thermopile sensor connects processing unit, anotherOne tunnel connects in processing unit by filtering and amplifying circuit, analog to digital conversion circuit successively, and locatesReason unit is connected to mechanism simultaneously and shows and terminal stores; The infrared light that camera lens is received is logicalFilter after mating plate filters the infrared ray that does not belong to contact and give off and enter thermopile sensor,Import signal into processing unit by cold junction compensation, amplification filtering, analog to digital conversion circuit again,After data are processed, in mechanism shows, show, or upload in terminal storesPrint storage.
Effect of the present utility model is the non-contact detection that has increased contact temperature, will be original regularly artificialThe mode of detection contact temperature has changed on-line real time monitoring into. Original mechanism does not have online contact temperature to surveyAmount, when excess Temperature situation appears in contact, can not feed back in time, constantly divides having under problem prerequisiteClose, sometimes may several weeks even within 1 month, all can't find problem, its life-span is shortened. And adopt non-Contact thermoelectric pile monitoring contact temperature, can real-time monitor the variation of contact temperature, once haveProblem can just can know that in 1～2 second whether contact temperature is normal, so just can make and sentencing in timeBreak and maintenance, adopt like this isolating switch ratio of monitoring contact temperature in real time originally not adhere to contact temperature1.3～1.5 times of isolating switch ILSs.
Brief description of the drawings
Fig. 1 is general principle block diagram of the present utility model;
Fig. 2 is thermoelectric pile temperature-measurement principle figure of the present utility model;
Fig. 3 is voltage signal processing circuit of the present utility model.
In figure:
1, isolating switch 2, camera lens 3, optical filter 4, thermopile sensor
5, cold junction compensation 6, filtering and amplifying circuit 7, analog to digital conversion circuit 8, processing unit
9, mechanism's demonstration 10, terminal stores 11, thermocouple 12, T1 measuring junction
13, T2 reference-junction 14, reference-junction compensating circuit 15, burn testing circuit
16, low-pass filter circuit 17, non-counter-rotative type amplifying circuit
Detailed description of the invention
Connect high voltage isolator is non-based on thermoelectric pile principle of the present utility model by reference to the accompanying drawingsTouching temp measuring system structure is illustrated.
Of the present utility model based on thermoelectric pile principle to high voltage isolator non-contact temperature measuring systemDesign philosophy be based on: when isolation switch contact because the not in place or mechanical wear of divide-shut brakeAnd temperature changes, gather infrared ray and realize the measurement of contact by thermoelectric pile.
Of the present invention based on thermoelectric pile principle to high voltage isolator non-contact temperature measuring system, shouldNon-contact temperature measuring system comprises isolating switch 1, camera lens 2, optical filter 3, thermoelectric pile sensingDevice 4, cold junction compensation 5, filtering and amplifying circuit 6, analog to digital conversion circuit 7, processing unit 8,Mechanism's demonstration 9, terminal stores 10, in the radiated infrared of described isolation switch contact 1 one sidesIn region, be provided with successively camera lens 2, optical filter 3, thermopile sensor 4, described thermoelectric pileThe cold junction compensation 5 of leading up to of sensor 4 connects processing unit 8, and another road is passed through successivelyFiltering and amplifying circuit 6, analog to digital conversion circuit 7 connect in processing unit 8, and processing unit8 are connected to mechanism's demonstration 9 and terminal stores 10 simultaneously; The infrared light that camera lens 2 is receivedAfter the infrared ray that does not belong to contact and give off being filtered by optical filter 3, entering thermoelectric pile passesSensor 4, then pass through cold junction compensation 5, amplification filtering 6, analog to digital conversion circuit 7 by signalImport processing unit 8 into, after data are processed, in mechanism shows 9, show,Or upload in terminal stores 10 and to print storage.
Described thermopile sensor 4 comprises multiple thermocouples 11, and by being connected in series.Materials A by first thermocouple 11 one end is as measuring junction 12 and last heatGalvanic couple 11 other end material B produce thermo-electromotive force E as reference-junction 13, will gatherThe voltage signal returning does a series of processing, finally reads into temperature. Thermopile sensor 4First signal by reference-junction compensating circuit 14, makes its reference-junction temperature stabilization at 0 DEG C,Make measuring junction 12 identical with the temperature difference. Then will handle signal by LPF electricityFiltering is carried out on road 16, has designed and has burnt testing circuit 15 in circuit upper end simultaneously. After filteringSignal enters non-counter-rotative type amplifying circuit 17, after signal is amplified, imports into modulus and turnsIn the STC single-chip microcomputer changing, carry out Treatment Analysis.
In Fig. 1, isolating switch 1 contact temperature difference gives off different infrared rays, infraredLight is by camera lens 2, utilizes optical filter 3 to filter the infrared ray that does not belong to contact and give off,And the infrared optical filter 3 that passes through that contact gives off enters thermopile sensor 4, due to productThe raw temperature difference and export proportional thermo-electromotive force, then by cold junction compensation circuit 5, will gatherThe faint infrared signal of returning adopts filtering and amplifying circuit 6, analog to digital conversion circuit 7 to believeNumber do to amplify and process, can be at mechanism's digital display meter after processing unit 8 is processed by dataIn 9, show, also can upload to terminal device 10, intuitively observe thermometricAbnormity point, abnormity point temperature under surveying record.
Fig. 2 is combined into thermopile sensor 4 by thermocouple 11 by the mode of series connection,A in thermocouple, B is two kinds of different materials, in first thermocouple 11 by materialA holds as measuring junction 12, is connected in series together by multiple thermocouples 11, then will be lastIn a thermocouple 11, material B end is made reference-junction 13, has so different temperature value T1And T2, will form like this thermopile sensor 4, produce voltage E (thermo-electromotive force),When isolating switch self temperature changes, the infrared energy of its radiation size with self4 powers of absolute temperature are directly proportional, and proportionally go out with the formal output of thermo-electromotive force.
Fig. 3 is for the circuit of whole invention design, forms thermopile sensor 4 by multiple thermocouples 11,The thermo-electromotive force signal that thermopile sensor 4 produces due to the temperature difference is by reference-junction compensating circuit 14,Carry out cold junction compensation, reference-junction is arranged from thermoelectric pile more close to, its compensation circuit is moreStablize, carry out the cold junction compensation of reference-junction by chip LM35, make temperature and voltageValue is directly proportional; Compensation circuit 14 signal after treatment is by burning testing circuit 15, thisWhether the design of circuit can detecting sensor burn, if thermoelectric pile burns broken string, amplifiesDevice output will exceed the scope of measurement, and the size of the resistance of R6 depends on thermoelectric pileThe resistance value of series connection. After compensating circuit 14 output signals, pass through low-pass filter circuit 16 simultaneously,By the combination of R3 and C1, filter out not belonging to our noise signal of detection. By filterThe rear signal of wave circuit 16 is very faint, accesses non-transoid amplifying circuit 17, so just canBe not subject to the resistance impact of thermoelectric pile, wherein VR2 is applicable to carry out adjustment at zero point, VR3Be applicable to full scale adjustment. Table 1 provides the value of one group of resistance capacitance below, can be by0-300 DEG C of temperature inversion is the circuit of 0-7.5V voltage.
Table 1
| Resistance value | Variable resistance | Electric capacity | |
| R1 | 1.5KΩ | ||
| R2 | 348KΩ | ||
| R3 | 15KΩ | ||
| R4 | 36.5KΩ | ||
| R5 | 136.5Ω | ||
| R6 | 150MΩ | ||
| VR1 | 30Ω | ||
| VR2 | 15KΩ | ||
| VR3 | 30KΩ | ||
| C1 | 10uF |
Claims (2)
- One kind based on thermoelectric pile principle to high voltage isolator non-contact temperature measuring system, it is characterized in that: this non-contact temperature measuring system comprises isolating switch (1), camera lens (2), optical filter (3), thermopile sensor (4), cold junction compensation (5), filtering and amplifying circuit (6), analog to digital conversion circuit (7), processing unit (8), mechanism shows (9), terminal stores (10), in the radiated infrared region of described isolating switch (1) contact one side, be provided with successively camera lens (2), optical filter (3), thermopile sensor (4), the cold junction compensation (5) of leading up to of described thermopile sensor (4) connects processing unit (8), another road is successively by filtering and amplifying circuit (6), analog to digital conversion circuit (7) connects in processing unit (8), and processing unit (8) is connected to mechanism demonstration (9) and terminal stores (10) simultaneously, the infrared light that camera lens (2) is received enters thermopile sensor (4) after the infrared ray that does not belong to contact and give off being filtered by optical filter (3), import signal into processing unit (8) by cold junction compensation (5), filtering and amplifying circuit (6), analog to digital conversion circuit (7) again, after data are processed, show in (9) and show in mechanism, or upload to printing storage in terminal stores (10).
- According to claim 1 based on thermoelectric pile principle to high voltage isolator non-contact temperature measuring system, it is characterized in that: described thermopile sensor (4) comprises multiple thermocouples (11), and by being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009412.8U CN205246223U (en) | 2015-12-07 | 2015-12-07 | Based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009412.8U CN205246223U (en) | 2015-12-07 | 2015-12-07 | Based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system |
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| Publication Number | Publication Date |
|---|---|
| CN205246223U true CN205246223U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009412.8U Expired - Fee Related CN205246223U (en) | 2015-12-07 | 2015-12-07 | Based on thermoelectric battery principle to high voltage isolator non -contact temperature measurement system |
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| CN (1) | CN205246223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333961A (en) * | 2015-12-07 | 2016-02-17 | 川铁电气（天津）股份有限公司 | System achieving non-contact temperature measurement of high-voltage isolating switch on basis of thermo-electric pile principle |
-
2015
- 2015-12-07 CN CN201521009412.8U patent/CN205246223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333961A (en) * | 2015-12-07 | 2016-02-17 | 川铁电气（天津）股份有限公司 | System achieving non-contact temperature measurement of high-voltage isolating switch on basis of thermo-electric pile principle |
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| 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: 20160518 Termination date: 20201207 |