CN202057420U - Non-contact temperature measuring device for rotor of hydraulic generator - Google Patents
Non-contact temperature measuring device for rotor of hydraulic generator Download PDFInfo
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- CN202057420U CN202057420U CN2011201019558U CN201120101955U CN202057420U CN 202057420 U CN202057420 U CN 202057420U CN 2011201019558 U CN2011201019558 U CN 2011201019558U CN 201120101955 U CN201120101955 U CN 201120101955U CN 202057420 U CN202057420 U CN 202057420U
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- rotor
- temperature
- infrared sensor
- magnetic pole
- measuring
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Abstract
The utility model relates to a detection device for a hydraulic generator in a power plant, namely a non-contact temperature measuring device for a rotor of a hydraulic generator. The control circuit comprises infrared photoelectric detection sensors arranged at multiple parts, a signal input and conditioning circuit, a signal processing and operation circuit, an in-situ display and alarm output circuit and a host computer system. The signal processing and operation circuit is an AT89C51 embedded single chip microcomputer. The infrared photoelectric detection sensors include one photoelectric sensor and six infrared sensors. The six infrared sensors are respectively arranged at parts of the rotor, and used for measuring the temperatures of parts of a pole winding. By utilizing the non-contact infrared temperature measurement technology, the measurement of temperatures of parts of a rotor winding and an iron core is completed during the rotation process of the rotor, thus well solving the temperature measurement problem. The non-contact temperature measuring device may detect thermally induced faults of an electric device and local hot spots of an electric device within a wide range of between -20 DEG C and 2000 DEG C, with a high resolution of 0.05 DEG C.
Description
Technical field
The utility model relates to a kind of generating plant hydrogenerator pick-up unit, i.e. hydraulic generator rotor contactless temperature-measuring device.
Background technology
In the prior art, therefore the rotor of hydrogenerator has just become a big heater owing to apply bigger exciting power, and the rising of its temperature directly influences the safe operation of generator, must monitor in real time its variation of temperature.For many years Generator Rotor Temperature measurement be puzzlement hydroelectric power system professional and technical personnel's a great problem, traditional temp measuring method (voltammetry) can only be measured the medial temperature of rotor winding, each temperature of each magnetic pole of energy measurement not, temperature with traditional method detection rotor wastes time and energy, and, this temperature value is the medial temperature of whole winding, can't know the temperature of each magnetic pole winding, the temperature of each each one of winding, temperature of pole core or the like.In fact the temperature of each winding and each one of winding is not exclusively the same, and the temperature of the temperature of each pole core and each one of iron core also is different.Want more properly to understand the detailed temperature value of each of rotor, traditional detection method can not be satisfied the demand.Also have a kind of method that temperature measuring equipment is installed on rotor body exactly, the method with photoelectricity passes to fixed part in the process of rotor rotation then, and this method exerts an influence to the transient equilibrium meeting of rotor, rotor is in operation vibrations occur.
The utility model content
The purpose of this utility model is to provide a kind of comprehensive to rotor at above-mentioned deficiency, measures the hydraulic generator rotor contactless temperature-measuring device of each temperature.
Technical solution of the present utility model is: its control circuit of hydraulic generator rotor contactless temperature-measuring device comprises the infrared ray photodetection sensor that the multi-section position is provided with, and signal input and modulate circuit, signal Processing and computing circuit are connected successively with the host computer system; Terrain shows and the warning output circuit is connected with signal Processing and computing circuit.Signal Processing and computing circuit are the AT89C51 embedded scm.Infrared ray photodetection sensor is a photoelectric sensor and six infrared sensors.Six infrared sensors place the upper end of rotor respectively, aim at the limit, upper end of magnetic pole winding, are used for measuring the temperature of magnetic pole winding upper end, apart from measured body 20cm; Place the lower end of rotor, aim at the limit, lower end of magnetic pole winding, be used for measuring the temperature of magnetic pole winding lower end, apart from measured body 20cm; Place the lower end of rotor, tiltedly aim at a side of magnetic pole winding, be used for measuring the temperature of magnetic pole winding side, apart from measured body 1200cm; Place the lower end of rotor, tiltedly aim at another side of magnetic pole winding, be used for measuring the temperature of magnetic pole winding side, apart from measured body 1200cm; Place the upper end of rotor, aim at the front of pole core, be used for measuring the temperature of pole core, apart from measured body 40cm; Place the upper end of rotor, aim at plane on the yoke, be used for measuring the temperature of magnetic pole yoke, apart from measured body 20cm.At occurring in nature, the object that all temperature are higher than absolute zero all ceaselessly towards periphery the space send infrared energy.The size of the infrared energy of object and the distribution of wavelength and its surface temperature have very confidential relation.Therefore, by the measurement to the infrared energy of object self radiation, just can measure its surface temperature exactly, infrared temperature measurement system is to measure its surface temperature by the energy of the emission of receiving target object, reflection and conduction.The detecting element of temperature measuring equipment is transported to the energy information of gathering in the microprocessor and handles, and converts temperature reading then to and shows.Optical system converges the target infrared energy in its visual field, and the size of visual field is determined by the optical element and the position thereof of temp measuring system.Infrared energy focuses on the photodetector and changes corresponding electric signal into.This signal is through amplifier and signal processing circuit, and changes the temperature value of measured target after proofreading and correct according to the algorithm of instrument internal and target emissivity into.
The utility model has the advantages that: the present invention adopts the noncontact infrared temperature, has finished the measurement of rotor winding and each temperature of iron core in the process of rotor rotation, has solved the thermometric problem well.The temperature of the online detection heat generating spot of temp measuring system by scanning, can also be drawn each magnetic pole temperature profile, and highly sensitive, is not subjected to the interference of electromagnetic field, is convenient to on-the-spot the use.It can be in-20 ℃～2000 ℃ wide-range with the thermic fault of 0.05 ℃ high resolution detection electrical equipment and the local hot spot in the electrical equipment or the like.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Description of drawings
Fig. 1 is that sensor is provided with structure diagram around generator amature.
Fig. 2 is the utility model schematic block circuit diagram.
Fig. 3 is signal input and modulate circuit schematic diagram.
Embodiment
Referring to Fig. 1, hydraulic generator rotor contactless temperature-measuring device comprises a photoelectric sensor 7, refractive body 8 and infrared sensor 1, infrared sensor 22, infrared sensor 33, infrared sensor 44, infrared sensor 55, infrared sensor 66, infrared sensor 1 places the upper end of rotor 7, aim at the limit, upper end of magnetic pole winding 10, be used for measuring the temperature of magnetic pole winding 10 upper ends, apart from measured body 20cm;
Infrared sensor 22 places the lower end of rotor 9, aims at the limit, lower end of magnetic pole winding 10, is used for measuring the temperature of magnetic pole winding 10 lower ends, apart from measured body 20cm;
Infrared sensor 33 places the lower end of rotor 9, tiltedly aims at a side of magnetic pole winding 10, is used for measuring the temperature of magnetic pole winding 10 sides, apart from measured body 1200cm;
Infrared sensor 44 places the lower end of rotor 9, tiltedly aims at another side of magnetic pole winding 10, is used for measuring the temperature of magnetic pole winding 10 sides, apart from measured body 1200cm;
Infrared sensor 55 places the upper end of rotor 9, aims at the front of pole core 11, is used for measuring the temperature of pole core 11, apart from measured body 40cm;
Infrared sensor 66 places the upper end of rotor 9, aims at plane on the yoke 12, is used for measuring the temperature of yoke 12, apart from measured body 20cm.
Photoelectric sensor 7 places on the stator, and refractive body places on the magnetic pole winding 10 positive, and integral body is used for the rotor magnetic pole location.
Referring to Fig. 2, its control circuit of hydraulic generator rotor contactless temperature-measuring device comprises that infrared ray photodetection sensor, signal conditioning circuit (signal amplification and conversion, digital filtering and anti-interference), signal Processing and computing circuit, terrain show and warning output circuit and host computer system.
Referring to Fig. 3, the simulating signal of six infrared ray sensor outputs of signal input and modulate circuit is input to this circuit by CZ2 and CZ3 respectively.Signal after treatment is input to the A/D converting unit of Single Chip Microcomputer (SCM) system, is digital signal with analog signal conversion, handles and computing for single-chip microcomputer.
Signal Processing and computing circuit are the AT89C51 embedded scm, and speed is fast, and be powerful.Temperature signal after conditioning, have ADC0809 ripe/after the mould conversion chip is changed, carry out digital filtering, scale transformation, computing, compensation and processing etc. by CPU, last signal is shown by display and reports to the police, also can be transferred to host computer by serial communication port.
Also have conventional keyboard and display circuit.Can be provided with and adjust so that carry out the measurement of temperature of rotor easily device by keyboard and display, also can communicate the setting of mode, can carry out the switching of display parameter etc. simultaneously.Display is six eight sections red LED nixie displaies.Powersupply system provides the working power of temp measuring system, partly is made up of rectification, filtering and voltage stabilizing, is respectively 3 groups of DC5V power supplys, supplies with different unit.Capacity is the configuration of two groups of 2A and one group of 2A.
The index that system reaches:
Fibre-optical probe can be 160 ℃ environment long-term work;
Temperature-measuring range :-32 ℃--400 ℃;
Fundamental error: 0.5 (± 0.5%);
Gauge head size: φ 14 * 80mm;
Distance coefficient: 50: 1;
Measuring distance: 0.2m-3m;
Can survey minimum target: φ 6;
Response time: less than 10ms;
Temperature resolution: 0.5 ℃;
Measuring accuracy: full scale ± 0.5%;
Repeatable accuracy: ± 0.2;
Fiber lengths: the longest 10m;
Simulation output: 0-5VDC, 4-20mA;
Working power: ± 12VDC;
Working environment: probe is less than 160 ℃; Signal processing unit is less than 60 ℃;
Weight: 0.7kg;
Relative humidity: 10-95% in the time of 30 ℃;
Response spectrum: 7-18micron;
Emissivity: 0.95Preset.
Claims (3)
1. a hydraulic generator rotor contactless temperature-measuring device is characterized in that its control circuit comprises the infrared ray photodetection sensor that the multi-section position is provided with, and signal input and modulate circuit, signal Processing and computing circuit are connected successively with the host computer system; Terrain shows and the warning output circuit is connected with signal Processing and computing circuit.
2. according to the described hydraulic generator rotor contactless temperature-measuring of claim 1 device, it is characterized in that signal Processing and computing circuit are the AT89C51 embedded scm.
3. according to claim 1 or 2 described hydraulic generator rotor contactless temperature-measuring devices, it is characterized in that infrared ray photodetection sensor is a photoelectric sensor (7) and infrared sensor one (1), infrared sensor two (2), infrared sensor three (3), infrared sensor four (4), infrared sensor five (5), infrared sensor six (6), infrared sensor is arranged as follows:
Infrared sensor one (1) places the upper end of rotor (9), aims at the limit, upper end of magnetic pole winding (10), is used for measuring the temperature of magnetic pole winding (10) upper end, apart from measured body 20cm;
Infrared sensor two (2) places the lower end of rotor (9), aims at the limit, lower end of magnetic pole winding (10), is used for measuring the temperature of magnetic pole winding (10) lower end, apart from measured body 20cm;
Infrared sensor three (3) places the lower end of rotor (9), tiltedly aims at a side of magnetic pole winding (10), is used for measuring the temperature of magnetic pole winding (10) side, apart from measured body 1200cm;
Infrared sensor four (4) places the lower end of rotor (9), tiltedly aims at another side of magnetic pole winding (10), is used for measuring the temperature of magnetic pole winding (10) side, apart from measured body 1200cm;
Infrared sensor five (5) places the upper end of rotor (9), aims at the front of pole core (11), is used for measuring the temperature of pole core (11), apart from measured body 40cm;
Infrared sensor six (6) places the upper end of rotor (9), aims at yoke (12) and goes up the plane, is used for measuring the temperature of yoke (12), apart from measured body 20cm;
Photoelectric sensor (7) places on the stator, and it is positive that refractive body places magnetic pole winding (10) to go up, and integral body is used for rotor (9) magnetic pole location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201019558U CN202057420U (en) | 2011-04-08 | 2011-04-08 | Non-contact temperature measuring device for rotor of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201019558U CN202057420U (en) | 2011-04-08 | 2011-04-08 | Non-contact temperature measuring device for rotor of hydraulic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057420U true CN202057420U (en) | 2011-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201019558U Expired - Fee Related CN202057420U (en) | 2011-04-08 | 2011-04-08 | Non-contact temperature measuring device for rotor of hydraulic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202057420U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557962A (en) * | 2013-11-14 | 2014-02-05 | 哈尔滨电机厂有限责任公司 | Hydro-generator confluence copper ring temperature rise distribution on-line monitoring system |
| CN104374491A (en) * | 2014-11-28 | 2015-02-25 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN104390727A (en) * | 2014-11-25 | 2015-03-04 | 南车株洲电机有限公司 | Online motor rotor temperature measuring probe |
| CN107764403A (en) * | 2017-10-09 | 2018-03-06 | 成都市格林菲勒科技有限公司 | A kind of Generator Rotor Temperature monitoring method |
| CN107764404A (en) * | 2017-10-09 | 2018-03-06 | 西华大学 | A kind of scaled bulb tubular hydraulic generator Damper Winding broken bar fault on-line monitoring method |
| CN109115346A (en) * | 2018-06-20 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of rotatable parts temperature monitoring system |
| CN113340434A (en) * | 2021-07-19 | 2021-09-03 | 哈尔滨电机厂有限责任公司 | Infrared temperature measurement system for end part of generator motor rotor |
-
2011
- 2011-04-08 CN CN2011201019558U patent/CN202057420U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557962A (en) * | 2013-11-14 | 2014-02-05 | 哈尔滨电机厂有限责任公司 | Hydro-generator confluence copper ring temperature rise distribution on-line monitoring system |
| CN104390727A (en) * | 2014-11-25 | 2015-03-04 | 南车株洲电机有限公司 | Online motor rotor temperature measuring probe |
| CN104390727B (en) * | 2014-11-25 | 2017-07-04 | 南车株洲电机有限公司 | A kind of rotor temperature measurement on-line probe |
| CN104374491A (en) * | 2014-11-28 | 2015-02-25 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN104374491B (en) * | 2014-11-28 | 2017-05-24 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN107764403A (en) * | 2017-10-09 | 2018-03-06 | 成都市格林菲勒科技有限公司 | A kind of Generator Rotor Temperature monitoring method |
| CN107764404A (en) * | 2017-10-09 | 2018-03-06 | 西华大学 | A kind of scaled bulb tubular hydraulic generator Damper Winding broken bar fault on-line monitoring method |
| CN109115346A (en) * | 2018-06-20 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of rotatable parts temperature monitoring system |
| WO2019241977A1 (en) * | 2018-06-20 | 2019-12-26 | 中国科学院深圳先进技术研究院 | Rotating component temperature monitoring system |
| CN113340434A (en) * | 2021-07-19 | 2021-09-03 | 哈尔滨电机厂有限责任公司 | Infrared temperature measurement system for end part of generator motor rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20140408 |