CN110346062A - A kind of unit rotor magnetic-pole connection wire temperature measuring equipment - Google Patents
A kind of unit rotor magnetic-pole connection wire temperature measuring equipment Download PDFInfo
- Publication number
- CN110346062A CN110346062A CN201910655399.XA CN201910655399A CN110346062A CN 110346062 A CN110346062 A CN 110346062A CN 201910655399 A CN201910655399 A CN 201910655399A CN 110346062 A CN110346062 A CN 110346062A
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- Prior art keywords
- rotor magnetic
- magnetic pole
- temperature
- antenna
- temperature measuring
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/26—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies
- G01K11/265—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies using surface acoustic wave [SAW]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
- G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention is suitable for generating set technical field, provide a kind of unit rotor magnetic-pole connection wire temperature measuring equipment, including generating set, the generating set includes rotor magnetic pole, the rotor magnetic pole is rotationally connected with support frame by shaft, further includes the equipment bolt SAW sensor being internally embedded at the rotor magnetic pole connecting line and the temperature reader being fixedly connected on support frame as described above；SAW sensor is internally embedded by the equipment bolt at rotor magnetic pole connecting line, cooperate the temperature reader of radar transmissions, wireless transmission setting eliminates long cable transmission bring noise jamming, temperature signal in outside is propagated with electromagnetic wave, temperature signal is to be propagated inside SAW sensor in the form of surface acoustic wave, it returned from temperature reader transmitting scanning signal to temperature signal, be parsed the time that a wheel thermometric process only needs Millisecond, make entire measuring system that there is high measurement accuracy.
Description
Technical field
The invention belongs to generating set technical field more particularly to a kind of unit rotor magnetic-pole connection wire temperature measuring equipments.
Background technique
The generator motor rotor magnetic pole tie point of hydroenergy storage station can cause in power generation and pump process because of vibration
Contact loosen or contact surface smaller strip carry out fever phenomenon, because in production process be in closed environment and the time between overhauls(TBO) it is longer, in this way
Hidden danger is brought to safety in production, cannot be found in time if there is similar situation, be easy to cause short circuit, fire, equipment to stop transport,
The even safety accidents such as casualties, cause huge direct or indirect economic loss.
But the space relative closure as locating for pumped storage generator motor inner rotator magnetic pole, and generator motor is run
When magnetic pole be in high speed rotation state, some domestic and international mechanisms are researched and developed, and technology path substantially includes following several
Kind: the indirect method of measurement, wired thermometric, IR thermometry；The indirect method of measurement utilizes relationship, the resistance of resistance and temperature
With voltage, current relationship, connecting line temperature is calculated by Formula Series by measuring other parameters, such mode can only be counted
The temperature under equipment normal condition is calculated, and manufacturing process is complicated, due to the presence of contact resistance, keeps its precision not high；Active nothing
Line thermometry installs active wireless temperature-measuring sensor additional at rotor magnetic pole connecting line position, since the sensor battery service life limits,
Later period bring maintenance work is fairly cumbersome, and infrared temperature-test technology is to install infrared probe additional at stator position, due to rotor
Rotation probe is difficult effectively to capture abnormal heating point, can not be accurately positioned capturing, therefore applicability is not strong.
Summary of the invention
The present invention provides a kind of unit rotor magnetic-pole connection wire temperature measuring equipment, it is intended to solve to be directed to electricity generation and electromotion unit rotor
Magnetic pole thermometric has the technology of realization claimed below: first is that since rotor rotation limitation causes to have to be wirelessly transferred；Second is that by
In guarantee temperature measurement accuracy and best contact type measurement is accurately positioned；Third is that non-maintaining problem.
The invention is realized in this way a kind of unit rotor magnetic-pole connection wire temperature measuring equipment, including generating set, the hair
Motor group includes rotor magnetic pole, and the rotor magnetic pole is rotationally connected with support frame by shaft, further includes being located at the rotor magnetic
The SAW sensor and the temperature reading being fixedly connected on support frame as described above that equipment bolt at the connecting line of pole is internally embedded
Device, the SAW sensor include sensor antenna and interdigital transducer, and the sensor antenna is installed on the interdigital transducer
On, the interdigital transducer is made of IDT, reflecting grating and piezoelectric substrate, and the IDT and the interdigital transducer are mounted on
On the piezoelectric substrate, and the both ends of the IDT are equipped with sensor antenna, and the temperature reader includes reading antenna and institute
Collector is stated, the reading antenna is electrically connected at the collector, and between the reading antenna and the sensor antenna
Connected by wireless signal, further include signal concentrator and controlling terminal, the temperature reader by the RS8 communications cable or
It is connect using Zigbee wireless networking with the signal concentrator and controlling terminal.
Preferably, there are two types of models, respectively delay line type and mode of resonance for the SAW sensor setting.
Preferably, there are two types of models, respectively stepping frequency modulated(FM) radar mode and pulse radar for the temperature reader setting
Mode.
Preferably, the reading antenna is provided with eight, is located on the support frame as described above of eight angles.
Preferably, the rotor magnetic pole is provided with six pairs, and has two temperature measuring points at each pair of rotor magnetic pole connecting line.
Compared with prior art, the beneficial effects of the present invention are: a kind of unit rotor magnetic-pole connection wire thermometric of the invention
Device is internally embedded SAW sensor by the equipment bolt at rotor magnetic pole connecting line, and SAW sensor is by sensor antenna
A plastics are encapsulated in interdigital transducer composition or metal shell inner volume is small and exquisite, and lighter in weight cooperates the temperature of radar transmissions
Reader is spent, wireless transmission setting eliminates long cable transmission bring noise jamming, and SAW sensor is based on surface acoustic wave techniques
Thermometric mode, temperature signal in outside is propagated with electromagnetic wave, and temperature signal is with sound surface inside SAW sensor
Waveshape is propagated, and is emitted scanning signal from temperature reader and is returned to temperature signal, is parsed a wheel thermometric process and only needs
The time of Millisecond can guarantee to grab signal in real time during electric generating set rotor magnetic pole rotates, make entirely to measure
System has high measurement accuracy and anti-interference ability.
Detailed description of the invention
Fig. 1 is schematic view of the mounting position of the invention；
Fig. 2 is that signal of the invention transmits schematic diagram；
Fig. 3 is SAW sensor schematic diagram in the present invention；
Fig. 4 is temperature reader schematic diagram in the present invention；
Fig. 5 is delay line type SAW sensor graphic structure schematic diagram of the present invention；
Fig. 6 is mode of resonance SAW sensor graphic structure schematic diagram of the present invention；
In figure: 1, generating set；11, rotor magnetic pole；12, support frame；2, SAW sensor；21, sensor antenna；22, it pitches
Finger transducer；221,IDT；222, reflecting grating；223, piezoelectric substrate；3, temperature reader；31, reading antenna；32, collector；
4, signal concentrator；5, controlling terminal.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of unit rotor magnetic-pole connection wire temperature measuring equipment, packet
Generating set 1 is included, generating set 1 includes rotor magnetic pole 11, and rotor magnetic pole 11 is rotationally connected with support frame 12 by shaft, also wraps
Include the SAW sensor 2 and be fixedly connected on support frame 12 that the equipment bolt being located at 11 connecting line of rotor magnetic pole is internally embedded
On temperature reader 3, SAW sensor 2 includes sensor antenna 21 and interdigital transducer 22, and sensor antenna 21 is installed on fork
On finger transducer 22, interdigital transducer 22 is made of IDT221, reflecting grating 222 and piezoelectric substrate 223, and IDT221 and interdigital is changed
Energy device 22 is mounted on piezoelectric substrate 223, and the both ends of IDT221 are equipped with sensor antenna 21, and temperature reader 3 includes
Reading antenna 31 and collector 32, reading antenna 31 are electrically connected at collector 32, and reading antenna 31 and sensor antenna 21
Between connected by wireless signal, further include signal concentrator 4 and controlling terminal 5, temperature reader 3 passes through RS485 communication line
Cable is connect using Zigbee wireless networking with signal concentrator 4 and controlling terminal 5.
In the present embodiment, controlling terminal 5 sends instructions to temperature reader 3 first, and temperature reader 3 is allowed to pass through reading
Antenna 31 is taken to issue electromagnetic signal to SAW sensor 2, SAW sensor 2 receives electromagnetic signal and converted by interdigital transducer 22
At the surface acoustic wave of internal work；Surface acoustic wave is converted into electromagnetic wave signal via sensor antenna 21 through interdigital transducer 22 again
Launch；The reading antenna 31 of temperature reader 3 receives the electromagnetic wave of return and extracts signal characteristic, to be tested
The temperature data of amount, reading antenna 31 summarize temperature data to collector 3, and collector 3 is by the RS485 communications cable or adopts
Signal concentrator 4 and controlling terminal 5 are sent to the mode of Zigbee wireless networking.
In the present embodiment, it includes useful signal that temperature reader 3, which receives signal to be, also includes noise jamming, avoids
The influence to testing result is interfered, in the inside of controlling terminal 5 equipped with the dress extracted to the reception signal of temperature reader 3
It sets, device does analysis processing for unlike signal, it is determined whether is useful signal, and is weighted processing to signal, guarantees
To correct temperature.
Interdigital transducer 22 is made of IDT221, reflecting grating 222 and piezoelectric substrate 223, and IDT221 and interdigital transducer
22 are mounted on piezoelectric substrate 223, and the both ends of IDT221 are equipped with sensor antenna 21.
In the present embodiment, sensor antenna 21 is connected at the both ends IDT221 of SAW sensor 2, so that it may composition sound
Surface wave wireless sensor, can receive and reflection electromagnetic wave, the course of work are: the electric signal that sensor antenna 21 receives
Inverse piezoelectric effect through IDT221 is converted into surface acoustic wave, and surface acoustic wave is propagated along piezoelectric substrate 223 and reflected by reflecting grating 222
IDT221 is returned, then the piezoelectric effect through IDT221 is converted into electric signal, is launched by sensor antenna 21, whole work process
It is entirely passively, energy to be provided without power supply, so surface acoustic wave wireless sensor is also referred to as passive wireless sensor.
It further include signal concentrator 4 and controlling terminal 5, temperature reader 3 passes through the RS485 communications cable or use
Zigbee wireless networking is connect with signal concentrator 4 and controlling terminal 5.
In the present embodiment, temperature reader 3, signal concentrator 4 and 5 communication mode of controlling terminal may be selected to lay
The RS485 communications cable or by the way of Zigbee wireless networking can be carried according to field condition by generating set 1
Communications cable channel is laid with communication line, and communication line is concentrated by hub form in monitor terminal, to realize networking
Monitoring.
Further, SAW sensor 2 is respectively delay line type and mode of resonance, and corresponding temperature reader 3 is adopted respectively
With stepping frequency modulated(FM) radar mode and pulse radar mode.
In the present embodiment, as shown in Figure 5 and Figure 6, according to the difference of device graphic structure and signal characteristic, SAW sensing
Device 2 can be divided into delay line type and two kinds of mode of resonance, and it is different that the reflecting grating 222 of delay line type SAW device is distributed in distance IDT221
On the position of distance, different reflecting gratings 222 due to position difference, it is different to the reflection delay time of acoustic signals, instead
Penetrating delay time will receive the influence of environmental factor, and the variation of environment parameter, realization can be obtained by the variation of detection time delay
The position of sensing function, reflecting grating 222 also has identity code function, this namely acoustic surface wave radio frequency identification principle, resonance
The reflecting grating 222 of type SAW device gathers in the two sides IDT221, constitutes a resonant cavity to surface acoustic wave signal, therefore it returns to letter
It number is a resonance signal, and resonance frequency is also effected by environmental factors in addition to having outside the Pass with design size, by detection
The variation of resonance frequency can obtain the variation of environment parameter, realize sensing function；Temperature reader 3 works using radar
Principle, and be delay line type or mode of resonance according to SAW sensor 2, stepping is usually respectively adopted in corresponding temperature reader 3
Frequency modulation (FMCW) radar mode and pulse radar mode, the difference of the two are that stepping frequency modulation reader issued is frequency sweep saw
Tooth wave signal, and the signal that pulse reader issues is the pulse of different frequency.
Further, reading antenna 31 is provided with eight, is located on the support frame 12 of eight angles.
Rotor was rotated in the period when in the present embodiment, due to the operation of generating set 1, in order to guarantee the good of signal
Covering needs to consider the layout designs of reading antenna 31, is considered antenna being fixed on generating set 1 according to 1 structure of generating set
On support frame 12, in order to guarantee the signal covering in each orientation, all put on the support frame 12 of 8 angles of electricity generation and electromotion unit
Reading antenna 31 is set, for reading antenna 31 by concentrating port to be introduced into the antenna input port of collector 3, reading antenna 31 is received
Signal collected in the antenna input port of collector 3, to guarantee no matter SAW sensor 2 which position gone to can be accurate
Receive temperature signal.
Further, rotor magnetic pole 11 is provided with six pairs, and has two temperature measuring points at 11 connecting line of each pair of rotor magnetic pole.
In the present embodiment, there are 6 pairs of rotor magnetic poles 11 inside a dynamotor group, each pair of magnetic pole junction there are 2
Node needs thermometric, therefore a unit has 24 temperature measuring points；24 SAW sensors 2 are needed to carry out thermometric, by SAW sensor 2
It is mounted at 11 connecting line of rotor magnetic pole, is connected by screw bolts at connecting line, due to 2 structure of tuning-fork type SAW sensor, by SAW
Sensor 2 is embedded on equipment bolt and fixes, and guarantees that SAW sensor 2 is reliably fixed, and guarantees that SAW is passed equipment when rotating at high speed
Sensor 2 can be good at it is fixed without departing from.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of unit rotor magnetic-pole connection wire temperature measuring equipment, including generating set (1), the generating set (1) includes rotor
Magnetic pole (11), the rotor magnetic pole (11) are rotationally connected with support frame (12) by shaft, it is characterised in that: further include being located at institute
State the SAW sensor (2) and be fixedly connected on the support that the equipment bolt at rotor magnetic pole (11) connecting line is internally embedded
Temperature reader (3) on frame (12), the SAW sensor (2) include sensor antenna (21) and interdigital transducer (22), institute
It states sensor antenna (21) to be installed on the interdigital transducer (22), the interdigital transducer (22) is by IDT (221), reflection
Grid (222) and piezoelectric substrate (223) composition, and the IDT (221) and the interdigital transducer (22) are mounted on the piezoelectricity
On substrate (223), and the both ends of the IDT (221) are equipped with sensor antenna (21), and the temperature reader (3) includes reading
Antenna (31) and the collector (32) are taken, the reading antenna (31) is electrically connected at the collector (32), and the reading
It takes and is connect between antenna (31) and the sensor antenna (21) by wireless signal, further include signal concentrator (4) and control
Terminal (5), the temperature reader (3) is by the RS485 communications cable or using Zigbee wireless networking and the signal collection
Middle device (4) and controlling terminal (5) connection.
2. a kind of unit rotor magnetic-pole connection wire temperature measuring equipment as described in claim 1, it is characterised in that: the SAW sensing
There are two types of models, respectively delay line type and mode of resonance for device (2) setting.
3. a kind of unit rotor magnetic-pole connection wire temperature measuring equipment as claimed in claim 2, it is characterised in that: the temperature is read
There are two types of models, respectively stepping frequency modulated(FM) radar mode and pulse radar mode for device (3) setting.
4. a kind of unit rotor magnetic-pole connection wire temperature measuring equipment as described in claim 1, it is characterised in that: the reading antenna
(31) eight are provided with, is located on the support frame as described above (12) of eight angles.
5. a kind of unit rotor magnetic-pole connection wire temperature measuring equipment as described in claim 1, it is characterised in that: the rotor magnetic pole
(11) six pairs are provided with, and there are two temperature measuring points at each pair of rotor magnetic pole (11) connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655399.XA CN110346062A (en) | 2019-07-19 | 2019-07-19 | A kind of unit rotor magnetic-pole connection wire temperature measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655399.XA CN110346062A (en) | 2019-07-19 | 2019-07-19 | A kind of unit rotor magnetic-pole connection wire temperature measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110346062A true CN110346062A (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910655399.XA Pending CN110346062A (en) | 2019-07-19 | 2019-07-19 | A kind of unit rotor magnetic-pole connection wire temperature measuring equipment |
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| CN (1) | CN110346062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394920A (en) * | 2021-06-24 | 2021-09-14 | 上海卓荃电子科技有限公司 | Motor rotor temperature measurement system and intelligent temperature control type motor |
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| CN103557958A (en) * | 2013-10-19 | 2014-02-05 | 国家电网公司 | Passive wireless temperature measuring antenna device |
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| CN104897294A (en) * | 2015-06-03 | 2015-09-09 | 安徽马尼特合开电器有限公司 | Rotary wireless passive temperature sensing system |
| CN204831596U (en) * | 2015-08-19 | 2015-12-02 | 吉林市吉隆科技开发有限责任公司 | Hydro -generator rotor field coil temperature dispersion formula automatic measuring device |
| CN207528368U (en) * | 2017-10-17 | 2018-06-22 | 杭州杭发发电设备有限公司 | Hydraulic generator rotor wireless temperature measurement system |
-
2019
- 2019-07-19 CN CN201910655399.XA patent/CN110346062A/en active Pending
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|---|---|---|---|---|
| JPS61105306A (en) * | 1984-10-30 | 1986-05-23 | Ishikawajima Harima Heavy Ind Co Ltd | Bearing temperature monitoring device |
| CN103557958A (en) * | 2013-10-19 | 2014-02-05 | 国家电网公司 | Passive wireless temperature measuring antenna device |
| CN104458053A (en) * | 2014-12-10 | 2015-03-25 | 广东电网有限责任公司电力科学研究院 | GIS internal bus operating temperature online monitoring system and method based on acoustic surface wave technology |
| CN104897294A (en) * | 2015-06-03 | 2015-09-09 | 安徽马尼特合开电器有限公司 | Rotary wireless passive temperature sensing system |
| CN204831596U (en) * | 2015-08-19 | 2015-12-02 | 吉林市吉隆科技开发有限责任公司 | Hydro -generator rotor field coil temperature dispersion formula automatic measuring device |
| CN207528368U (en) * | 2017-10-17 | 2018-06-22 | 杭州杭发发电设备有限公司 | Hydraulic generator rotor wireless temperature measurement system |
Non-Patent Citations (1)
| Title |
|---|
| 彭军: "SAW传感器的基本知识", 《传感器与检测技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394920A (en) * | 2021-06-24 | 2021-09-14 | 上海卓荃电子科技有限公司 | Motor rotor temperature measurement system and intelligent temperature control type motor |
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Application publication date: 20191018 |
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