CN206850621U - A kind of temperature of rotor measurement apparatus for generating set - Google Patents
A kind of temperature of rotor measurement apparatus for generating set Download PDFInfo
- Publication number
- CN206850621U CN206850621U CN201720764158.5U CN201720764158U CN206850621U CN 206850621 U CN206850621 U CN 206850621U CN 201720764158 U CN201720764158 U CN 201720764158U CN 206850621 U CN206850621 U CN 206850621U
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- China
- Prior art keywords
- slip ring
- temperature
- rotor
- carbon brush
- temperature detecting
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Links
- 238000005259 measurement Methods 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000012806 monitoring device Methods 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 20
- 238000009413 insulation Methods 0.000 description 5
- 238000004861 thermometry Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The utility model discloses a kind of temperature of rotor measurement apparatus for generating set, including temperature detecting resistance, carbon brush, temperature detection monitoring device and the first slip ring and the second slip ring being fixed on rotor shaft, temperature detecting resistance is three-wire system PT100 temperature detecting resistances, first slip ring and the second slip ring are vertically separated into multiple sliding valves respectively, and insulating trip is provided between each sliding valve；A piece lead of temperature detecting resistance is connected with one of the first slip ring sliding valve, and other two leads of temperature detecting resistance are connected with two sliding valves of the second slip ring respectively；Carbon brush is connected with temperature detection monitoring device, and the utility model can measure the direct temperature of rotor windings in real time, realizes and whole rotor magnetic poles are monitored.
Description
Technical field
A kind of temperature measuring equipment is the utility model is related to, more particularly to a kind of hydro-generating Unit rotor windings temperature is surveyed
Amount, specially it is a kind of can direct measurement rotor windings internal temperature temperature measuring equipment.
Background technology
Hydroelectric generating set rotor is one important component of generator, and the maximum temperature value that its work allows is that have one
Fixed limitation（It it is 130 degree degrees Celsius such as B-class insulation）.If temperature exceedes setting, the performance of insulating materials will degenerate,
Accelerate the aging of insulation, finally can also make insulation breakdown and burn.In summary, due to various loss meetings during generator operation
Internal temperature is raised, especially the most typical with the temperature of rotor, this will influence the insulating properties of generator insulating material, in order to
Ensure the normal reliable work of generator, the temperature of generator amature must just be measured.If measure the temperature of gained
Value exceedes normal value, and monitoring device will send alarm, remind administrative staff to pay attention to being checked, the failure for excluding to be likely to occur is hidden
Suffer from, or reduce the output of generator, or increase the cooling to generator.Finally the temperature of generator amature is set to return to normal number
Value, to ensure engine health reliability service.But rotor is more difficult as a rotary part, measurement temperature.It is now big-and-middle
The conventional thermometric mode of type turbine-generator units is indirect thermometry, IR thermometry or non-contact transmission mode thermometric.
Existing hydraulic generator rotor winding temperature measurement main method is indirect thermometry, that is, utilizes temperature of rotor liter
Height, the principle of rotor copper circle resistance increase, by measuring rotor current voltage, calculates rotor windings resistance, passes through formula
Calculate rotor windings temperature.This mensuration is disadvantageous in that the winding temperature that can not actually reflect each magnetic pole of rotor, together
When have larger calculation error.IR thermometry is to carry out temperature survey using infrared thermometer, but can only be in generator outage
Shi Jinhang, can not detect in real time and and alarm, and because infrared rays survey by reflection obtain signal, precision is relatively low,
Generator operating mode can not be accurately reflected, data and the obstruction in detection and serious are brought to generator operation, detection, maintenance
The technical problem of potential safety hazard etc..Contactless temperature-measuring is by after temperature sensitive original paper thermometric, using wireless transmission method（It is such as infrared
Line, bluetooth or optical signal）Temperature is passed into outside and receives processor, but by rotary magnetic inside large and medium hydro-generator group
Influence and other strong electromagnetics, can not accurate measurement working rotor when temperature rise.
It is 200810136986.X separately to have China Patent No., and 2009.1.14 discloses one kind and carries temperature of rotor measurement end
The motor and its temperature of rotor on-line measurement device of son, it belongs to machine field and its detection field.It solves existing medium and small
The deficiency of the rotor thermometry of type induction machine, and contactless temperature-measuring element are vulnerable to motor rotary magnetic in motor internal
Influence and the problem of temperature rise when being unable to Accurate Determining working rotor.The resistance of motor with temperature of rotor measurement terminal
Formula temperature sensor is mounted in the lateral wall of rotor, is drawn and is connected respectively with two slip rings, described two by two p-wires
Individual slip ring is solidly set on the output shaft of motor and mutually insulated, and two slip rings are slidably connected with two brushes respectively.Foregoing invention
Suitable for middle-size and small-size induction machine, it is impossible to each rotor magnetic pole is measured, and can not be realized to whole rotor magnetic poles
Monitoring.
Utility model content
The defects of in order to overcome above-mentioned prior art, it is real that the utility model provides a kind of direct temperature to rotor windings
When measure, realize to whole rotor magnetic poles monitoring temperature of rotor measurement apparatus.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of temperature of rotor measurement apparatus for generating set, including be arranged on generator amature temperature detecting resistance,
Carbon brush, temperature detection monitoring device and the first slip ring and the second slip ring being fixed on rotor shaft, it is characterised in that：The thermometric electricity
It is three to hinder for three-wire system PT100 temperature detecting resistances, the carbon brush；First slip ring and the second slip ring are vertically separated into multiple cunnings respectively
Valve, insulating trip is provided between each sliding valve；A piece lead of the temperature detecting resistance is connected with one of the first slip ring sliding valve, thermometric
Other two leads of resistance are connected with two sliding valves of the second slip ring respectively；One of carbon brush and the first slip ring, which slide, to be connected
Connect；Two other carbon brush is slidably connected with the second slip ring；Carbon brush described in three is connected with temperature detection monitoring device.Generator operation
When, temperature detecting resistance and outside line rotate with rotor and slip ring, after slip ring goes to certain angle, first temperature detecting resistance
Three lines are connected by carbon brush, can now measure the resistance of temperature detecting resistance, and then are converted into changing the temperature of winding；When slip ring turns again
After certain angle, three lines of second temperature detecting resistance are connected by carbon brush, now measure the temperature of second winding.With such
Push away, upper and lower slip ring rotates a circle, you can measures the temperature of multiple temperature detecting resistances.
The number for the cunning valve that the second described slip ring separates is two times of the cunning valve number that the first slip ring separates.
The compensating end of temperature detection monitoring device and the first slip ring carbon brush that is slidably connected are connected；The voltage end of temperature detection monitoring device,
Two carbon brush that current terminal is slidably connected with the second slip ring respectively are connected.
Other two leads of described temperature detecting resistance are connected with two sliding valves of the second slip ring respectively；This two sliding valve phases
It is adjacent.
The utility model has advantages below：
The utility model temperature detecting resistance is three-wire system PT100 temperature detecting resistances, and carbon brush is three；First slip ring and the second slip ring
Multiple sliding valves are vertically separated into respectively, and a lead of temperature detecting resistance is connected with one of the first slip ring sliding valve, temperature detecting resistance
Other two leads are connected with two sliding valves of the second slip ring respectively；One of carbon brush is slidably connected with the first slip ring；In addition
Two carbon brush are slidably connected with the second slip ring；Carbon brush described in three is connected with temperature detection monitoring device.Using PT100 temperature detecting resistances
It is directly installed on rotor windings, by the cunning valve of upper and lower two split-types and three carbon brush of fixed angle, by voltage, electric current
And compensating line access temperature detecting resistance, complete to measure the direct temperature of rotor windings in real time；It can not be carried out for high-speed rotating component
The difficulty of direct temperature measurement, and contactless temperature-measuring element be vulnerable to the influence of rotating excitation field in generator and can not be accurate
The problem of measuring rotor temperature rise, loop contact resistance compensation can be carried out using the measurement of three-wire system temperature detecting resistance, numerical value is more accurate.
Meanwhile by dividing valve insulation sliding valve, a point valve is carried out by different angle to the rotor of different magnetic poles number, it is ensured that to each rotor
Magnetic pole measures, and realizes the monitoring to whole rotor magnetic poles.
Brief description of the drawings
Fig. 1 is structure principle chart of the present utility model；
Fig. 2 is slip ring longitudinal direction of the present utility model perspective view.
Marked in figure：1st, generator amature, 2, rotor shaft, 3, rotor magnetic pole, 4, temperature detecting resistance, the 5, first slip ring, 6,
Second slip ring, 7, sliding valve, 8, temperature detection monitoring device, 9, cable for measuring temperature fixed seat, 10, carbon brush, 11, cable for measuring temperature.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
The utility model can be monitored to the internal temperature of multiple windings of the rotor of group of motors, and the present embodiment is with four
Exemplified by individual winding.
As shown in Figure 1 and Figure 2, a kind of temperature of rotor measurement apparatus for generating set, generating set turn including generator
Son 1, rotor 1 is provided with rotor magnetic pole 3（That is winding）, rotor shaft 2, the center of rotor 1 is provided with rotor shaft 2.Rotor
Temperature measuring equipment includes the temperature detecting resistance 4 in embedment rotor magnetic pole 3, and insulated from each other two are fixed with rotor shaft 2
Slip ring, i.e. the first slip ring 5 and second do not have slip ring 6, and two slip rings are also insulated with rotor shaft 2 and temperature detection monitoring device 8, thermometric
The lead of resistance 4 is connected by cable for measuring temperature 9 with two slip rings, and cable for measuring temperature 11 passes through the survey that is arranged on generator amature 1
Warm cable anchor block 9 is fixed, and cable for measuring temperature 11 is connected through the hollow of rotor shaft 2 with two slip rings.
In the utility model, temperature detecting resistance 4 is three-wire system PT100 temperature detecting resistances, is four（Four windings）, four thermometrics
Resistance 4 divides in separately four rotor magnetic poles of embedment, and one end of PT100 temperature detecting resistances root connects a lead, other end connection two
Root lead；Carbon brush 10 is three；First slip ring 5 is vertically separated into multiple sliding valves 7（Four）, insulation is provided between each sliding valve 7
Piece；Second slip ring 6 is vertically also separated into multiple sliding valves 7（Eight）, insulating trip is provided between each sliding valve 7, i.e., on the second slip ring 6
The cunning valve 7 of separation is two times on the first slip ring 5；Insulated between each sliding valve 7.A lead and the first slip ring 5 for temperature detecting resistance 4
A sliding valve 7 connect；Other two leads of temperature detecting resistance 4 are connected with two sliding valves 7 of the second slip ring 6 respectively, i.e., every
Lead connects a sliding valve 7, and this two sliding valves 7 are adjacent；In three carbon brush 10, one of carbon brush and the first slip ring 5 are slided and connected
Connect；Two other carbon brush and the second slip ring slide 6 dynamic connections；Carbon brush described in three is connected with temperature detection monitoring device（Such as Fig. 2 institutes
Show）.
Further, temperature detection monitoring device 8 is connected as with the specific of carbon brush 10：The compensating end of temperature detection monitoring device 8 and first
The carbon brush 10 that is slidably connected of slip ring 5 connects；Voltage end, the current terminal of temperature detection monitoring device 8 are slidably connected with the second slip ring 6 respectively
Two carbon brush connections.
To ensure that fixed carbon brush contacts same temperature detecting resistance, the first slip ring and the cunning valve 7 on the second slip ring are symmetrical.
The segregation method of sliding valve 7：It is assumed that magnetic pole is 4, it is necessary to measure the temperature of 4 magnetic poles, the first slip ring is with regard to uniform
It is divided into 4 valves of 4 mutually insulateds, the second slip ring is that two lines are drawn, and to be divided into 8 valves of 8 mutually insulated（As shown in Figure 2）,
Like this, when slip ring rotates with rotor, the data of fixed carbon brush collection are exactly first group of resistance, second group of resistance, with
This analogizes.
During generator operation, temperature detecting resistance and outside line rotate with rotor and slip ring, after slip ring goes to 0-80 °, the
Three lines of one temperature detecting resistance are connected by carbon brush, can now measure the resistance of temperature detecting resistance, and then are converted into changing winding
Temperature；After slip ring turns 80 ° again, three lines of second temperature detecting resistance are connected by carbon brush, now measure second winding
Temperature.By that analogy, upper and lower slip ring rotates a circle, you can measures the temperature of multiple temperature detecting resistances.
It is directly installed on using PT100 temperature detecting resistances on rotor windings, cunning valve and fixation by upper and lower two split-types
Three carbon brush of angle, voltage, electric current and compensating line are accessed into temperature detecting resistance, complete to survey the direct temperature of rotor windings in real time
Amount；Can not carry out the difficulty of direct temperature measurement for high-speed rotating component, and contactless temperature-measuring element generator easily by
To the influence of rotating excitation field the problem of be unable to accurate measurement rotor temperature rise, it can be returned using the measurement of three-wire system temperature detecting resistance
Road contact resistance compensation, numerical value are more accurate.
Claims (4)
1. a kind of temperature of rotor measurement apparatus for generating set, including the temperature detecting resistance being arranged on generator amature (1)
(4), carbon brush (10), temperature detection monitoring device (8) and the first slip ring (5) and the second slip ring (6) being fixed on rotor shaft (2),
It is characterized in that：The temperature detecting resistance (4) is three-wire system PT100 temperature detecting resistances, and the carbon brush (10) is three；First slip ring
(5) multiple sliding valves (7) are vertically separated into respectively with the second slip ring (6), insulating trip is provided between each sliding valve (7)；The thermometric
A piece lead of resistance (4) is connected with one of the first slip ring (5) sliding valve (7), other two leads difference of temperature detecting resistance (4)
It is connected with two sliding valves (7) of the second slip ring (6)；One of carbon brush (10) is slidably connected with the first slip ring (5)；Two other
Carbon brush (10) is slidably connected with the second slip ring (6)；Carbon brush (10) described in three is connected with temperature detection monitoring device (8).
2. the temperature of rotor measurement apparatus according to claim 1 for generating set, it is characterised in that：Described second
The number for the cunning valve (7) that slip ring (6) separates is two times of cunning valve (7) number that the first slip ring (5) separates.
3. the temperature of rotor measurement apparatus according to claim 1 for generating set, it is characterised in that：Temperature detection monitoring fills
Put the compensating end of (8) and the first slip ring (5) carbon brush (10) that is slidably connected is connected；Voltage end, the current terminal of temperature detection monitoring device (8)
Two carbon brush (10) being slidably connected respectively with the second slip ring (6) are connected.
4. the temperature of rotor measurement apparatus according to claim 1 for generating set, it is characterised in that：Described thermometric
Other two leads of resistance (4) are connected with two sliding valves (7) of the second slip ring (6) respectively；Two sliding valves (7) are adjacent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720764158.5U CN206850621U (en) | 2017-06-28 | 2017-06-28 | A kind of temperature of rotor measurement apparatus for generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720764158.5U CN206850621U (en) | 2017-06-28 | 2017-06-28 | A kind of temperature of rotor measurement apparatus for generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850621U true CN206850621U (en) | 2018-01-05 |
Family
ID=60802910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720764158.5U Withdrawn - After Issue CN206850621U (en) | 2017-06-28 | 2017-06-28 | A kind of temperature of rotor measurement apparatus for generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850621U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307202A (en) * | 2019-11-19 | 2020-06-19 | 辽宁红德电碳制品有限公司 | Brush material performance detection device |
| CN113432463A (en) * | 2021-06-25 | 2021-09-24 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Electric brush temperature measuring system for heat storage element of rotary air preheater |
| WO2022082867A1 (en) * | 2020-10-21 | 2022-04-28 | 中车株洲电机有限公司 | On-line temperature measurement system for wound-type motor rotor winding |
| CN116256084A (en) * | 2023-03-28 | 2023-06-13 | 湖北清江水电开发有限责任公司 | Rotor temperature measuring device and method of horizontal hydroelectric generating set |
| CN116448275A (en) * | 2023-03-28 | 2023-07-18 | 湖北清江水电开发有限责任公司 | Rotor contact type temperature measuring device and method for horizontal hydroelectric generating set |
-
2017
- 2017-06-28 CN CN201720764158.5U patent/CN206850621U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307202A (en) * | 2019-11-19 | 2020-06-19 | 辽宁红德电碳制品有限公司 | Brush material performance detection device |
| WO2022082867A1 (en) * | 2020-10-21 | 2022-04-28 | 中车株洲电机有限公司 | On-line temperature measurement system for wound-type motor rotor winding |
| CN113432463A (en) * | 2021-06-25 | 2021-09-24 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Electric brush temperature measuring system for heat storage element of rotary air preheater |
| CN116256084A (en) * | 2023-03-28 | 2023-06-13 | 湖北清江水电开发有限责任公司 | Rotor temperature measuring device and method of horizontal hydroelectric generating set |
| CN116448275A (en) * | 2023-03-28 | 2023-07-18 | 湖北清江水电开发有限责任公司 | Rotor contact type temperature measuring device and method for horizontal hydroelectric generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20231129 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20231129 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |