CN204064494U - A kind of power generator rotor magnetic pole temp measuring system - Google Patents
A kind of power generator rotor magnetic pole temp measuring system Download PDFInfo
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- CN204064494U CN204064494U CN201420389409.2U CN201420389409U CN204064494U CN 204064494 U CN204064494 U CN 204064494U CN 201420389409 U CN201420389409 U CN 201420389409U CN 204064494 U CN204064494 U CN 204064494U
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- magnetic pole
- power generator
- measuring system
- rotor magnetic
- generator rotor
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Abstract
The utility model relates to a kind of power generator rotor magnetic pole temp measuring system, solve and adopt classic method or infrared thermometry method to carry out real time temperature monitoring to magnet pole of rotor of hydraulic generator, can not conscientiously, intuitively, express the problem of magnetic pole temperature exactly, it is characterized in that comprising measurement mechanism, transfer device, pen recorder, reading device, measurement mechanism comprises several Pt100 thermal resistances, and this resistance is installed on magnetic pole winding copper bar inside by burying method underground; Transmission system comprises configuration to the temperature measuring wire of each Pt100 thermal resistance, and temperature measuring wire is laid along magnetic pole surfaces, and enters register system along wheel arm; Pen recorder comprises thermometric registering instrument, battery, and thermometric registering instrument, battery are arranged on turbine-generator units inside by vasculum, random groups rotate, and when unit operation real time record rotor magnetic pole temperature.
Description
Technical field
The utility model relates to hydrogenerator equipment technical field, particularly relates to a kind of power generator rotor magnetic pole temp measuring system.
Background technology
Rotor magnetic pole is as the core component of generator, and its running temperature problem is the emphasis monitoring target in power-plant operation always, and rotor magnetic pole is as rotatable parts, generally directly cannot carry out thermometric.
Current this area, to the measurement of magnetic pole temperature, generally uses conventional methods, and namely adopts electric current and voltage method, by monitoring the resistance variations of magnetic pole, calculates the temperature of rotor magnetic pole.What this method was measured is rotor magnetic pole overall electrical resistance, reflection be medial temperature, magnetic pole temperature conditions can not be expressed conscientiously, intuitively, there is very large limitation.And conventional voltage current method 15 minutes one group of data, data volume is little, does not possess analysis and guidance meaning, gradually can not meet need of production.Also have the infrared thermometry mode of adopting in prior art, as patent publication No. CN101750148A, a kind of on-line monitoring and positioning method for temperature of junction plates of pole coil of rotor of electric generator of proposition, comprises data acquisition, Logic judgment and data and exports; It is characterized in that the web joint serial number of whole for generator amature pole coil, in the position aiming at web joint, an infrared temperature probe is set, the position that rotor macro-axis corresponds to certain web joint arranges a phase demodulation sensor, the position signalling of each web joint is gathered successively by phase demodulation sensor, and successively this position signalling is sent to monitoring device, then gathered the web joint temperature of reference numeral by infrared temperature probe successively, this temperature signal is sent to monitoring device.And for example patent announcement number is a kind of magnet pole of rotor of hydraulic generator temperature on-line monitoring device of CN202403802U, and its control circuit comprises infrared measurement of temperature instrument circuit and the magnetic pole locating device circuit of the swing be connected with Programmable Logic Controller respectively; And as patent announcement number be CN202057420U, a kind of generating plant non-contact temperature measuring device for rotor of hydraulic generator of design, its control circuit comprises infrared ray photoelectric acquisition sensor that multiple location arranges, signal input and modulate circuit, signal transacting and computing circuit, now to show and alarm output circuit and host computer system.These infrared thermometers have irremediable shortcoming: as being subject to such environmental effects (environment temperature, dust etc. in air), for light or polishing metal surface thermometry readings impact larger, be only limited to and measure object external temperature, be inconvenient to temperature when measuring interior of articles and there is barrier.In addition, infrared thermometer also accurately must determine the emissivity of testee, and environment temperature should lower than testee temperature, and perpendicular alignmnet testee surface wanted by temperature measurer, and under any circumstance, angle all can not more than 30 DEG C etc.
summary of the invention
The purpose of this utility model is to solve above-mentioned employing classic method or infrared thermometry method carries out real time temperature monitoring to magnet pole of rotor of hydraulic generator, can not conscientiously, intuitively, express the problem of magnetic pole temperature exactly, there is provided a kind of structure, technological design reasonable, by thermal resistance direct contact measurement rotor magnetic pole winding temperature, the power generator rotor magnetic pole temp measuring system that data volume is enriched in time.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of power generator rotor magnetic pole temp measuring system, it is characterized in that comprising measurement mechanism, transfer device, pen recorder, reading device, described measurement mechanism comprises several Pt100 thermal resistances, and it is inner that this resistance is embedded in magnetic pole winding copper bar; Transfer device comprises the temperature measuring wire be connected with each Pt100 thermal resistance, and temperature measuring wire is laid along magnetic pole surfaces, and enters pen recorder along wheel arm; Pen recorder comprises thermometric registering instrument, battery, and thermometric registering instrument, battery are arranged on turbine-generator units inside by vasculum.Temperature detecting resistance adopts Pt100 thermal resistance, and according to the feature of magnet pole of rotor of hydraulic generator, imbed in copper bar, thermal resistance is fully contacted with copper bar whole for temperature detecting resistance, what reflect completely is copper bar real time temperature.Pt100 thermal resistance is the resistance that a kind of resistance changes along with temperature variation, when PT100 is at 0 degree Celsius, its resistance is 100 ohm, and resistance at the uniform velocity can increase along with temperature rises to form, during this programme application, because the reading sampling period is adjustable, select short period counting, data volume significantly increases, and result more has directive significance.This programme pen recorder is by after all data acquisitions, and unit stops, and takes off pen recorder thermometric registering instrument, reads data in registering instrument, and import computer by mobile USB flash disk, display rotor magnetic pole temperature directly perceived, and can generate chart analysis.
As preferably, several described Pt100 thermal resistances at least will be arranged at poletip middle, magnetic pole afterbody middle, middle, magnetic pole side, upper place, magnetic pole side, Xia Zhongchu position, magnetic pole side respectively.Magnetic pole is selected best thermometric position, to obtain the temperature data at each position of whole magnetic pole.
As preferably, described Pt100 thermal resistance is embedded in the deep trouth that magnetic pole winding copper bar is provided with, and Pt100 thermal resistance is lower than copper bar surface.Copper bar thermal conductivity is good, and whole Pt100 thermal resistance is embedded among copper bar, the running temperature of what its reading fully demonstrated is whole magnetic pole winding.
As preferably, described temperature measuring wire is laid along magnetic pole backboard, and adopts single shroud ring to locate.Single shroud ring and magnetic pole backboard adopt spot welding mode to fix, and set single shroud ring quantity according to conductor length, and during installation, temperature measuring wire must be bound by coverlet shroud ring securely, and when avoiding rotor to rotate, temperature measuring wire produces radial vibration.
As preferably, described vasculum is pressed close to generator shaft and is installed, and is provided with rest pad, and is provided with removable side cover plate and upper cover plate between the base plate of vasculum and turbine-generator units internals.Press close to generator shaft and large shaft position installation vasculum, stability is strong, easily fixes, and puts empty van body by rest pad, casing is ventilated.
As preferably, described upper cover plate is provided with louvre; Upper cover plate and the limit that generator shaft coordinates have the cover plate arc limit equal with generator shaft respective diameters place.During work, ensure that vasculum is in a kind of good ventilation state, make each temperature-measuring part stable.
As preferably, described reading device comprises mobile memory, computer.By the record data such as USB flash disk and with utilize computer analysis.
As preferably, described thermometric registering instrument is recording instrument without paper, sampling period≤5 minutes.This programme can select the sampling period according to the model of hydrogenerator, power, flexibly and easily.
As preferably, described Pt100 thermal resistance measuring tempeature scope is 0 ~ 155 DEG C, measuring accuracy ± 1 DEG C.Namely conventional technical requirement can obtain sampled data the most accurately, and cost is low.
As preferably, described Pt100 thermal resistance is embedded in winding copper bar, and namely offer deep trouth at magnetic pole winding copper bar place, Pt100 thermal resistance buries gap-fill underground room temperature setting adhesives.Room temperature setting adhesives is also known as cold setting adhesive, namely curable without the need to heating under room temperature (20 ~ 30 DEG C), need not warming-up device specially when glueing joint construction, easy to use, save energy consumption and cost of equipment, is especially applicable to outfield and glueds joint and repair use.
The beneficial effects of the utility model are: by directly measuring rotor magnetic pole winding temperature, reflect generator amature running temperature situation objective reality, for unit operation provides scientific basis, and provide data supporting for rotor retrofit; Survey frequency can reach every 30 seconds once, and data volume is enriched, and has larger analysis and guidance meaning; Ensure that unit safety stable operation.
Accompanying drawing explanation
Fig. 1 is a kind of using state structural representation of the present utility model.
Fig. 2 is the plan structure schematic diagram of the utility model Fig. 1.
Fig. 3 is a kind of vasculum position of the present utility model partial enlargement structural representation.
Fig. 4 is the plan structure schematic diagram of the utility model Fig. 3.
Fig. 5 is a kind of vasculum upper cover plate schematic diagram of the present utility model.
Fig. 6 is a kind of temperature detecting resistance arrangement schematic diagram of the present utility model.
Fig. 7 is the plan structure schematic diagram of the utility model Fig. 6.
Fig. 8 is the M place partial enlargement structural representation of the utility model Fig. 6.
Fig. 9 is that the C-C of Fig. 8 is to sectional structure schematic diagram.
Figure 10 is a kind of temperature measuring wire arrangement schematic diagram of the present utility model.
Figure 11 is a kind of temperature measuring wire fixed form structural representation of the present utility model.
In figure: 1. pen recorder, 101. rest pads, 102. batteries, 103. thermometric registering instruments, 104. vasculums, 105. side cover plates, 106. upper cover plates, 106a. louvre, 106b. cover plate arc limit, 2. magnetic pole, 3. deep trouth, 4. temperature measuring wire, 5. single shroud ring, 6. copper bar.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
As shown in Figure 1 and Figure 2, a kind of power generator rotor magnetic pole temp measuring system of the present embodiment, realizes by measuring, transmitting, record, read four devices.
Wherein, measurement mechanism 1 comprises 6 Pt100 thermal resistances, and resistance standard presses IEC751B level, resistance measurement temperature range 0 ~ 155 DEG C, measuring accuracy ± 1 DEG C, and resistance value requires: when 0 DEG C, resistance is 100 ± 1 Ω.
Thermal resistance mounting arrangement is as follows: by burying method underground, Pt100 thermal resistance is arranged on magnetic pole winding copper bar inside, 6 Pt100 thermal resistances divide six places to lay, be arranged in 1 piece, place under 1 piece, magnetic pole 2 head middle, 1 piece, magnetic pole 2 afterbody middle, 2 pieces, middle, magnetic pole 2 side, 1 piece, upper place, magnetic pole 2 side, magnetic pole 2 side respectively, as shown in Figure 6, Figure 7.When burying underground, at magnetic pole winding copper bar place, offer deep trouth 3, see Fig. 8, Fig. 9, length and width and Pt100 thermal resistance clearance fit, after PT100 thermal resistance is buried underground, gap portion adopts room temperature setting adhesives to fill, and requirement is that Pt100 thermal resistance and room temperature setting adhesives must not higher than copper bar surfaces.
Transfer device comprises configuration to the temperature measuring wire 4 of each Pt100 thermal resistance, for ensureing the accuracy of measurement data, temperature measuring wire 4 technical requirement will meet or exceed following index: heart yearn quantity 3 copper stranded conductors, insulating sheath material adopts FEP(perfluoroethylene-propylene), working temperature-100 DEG C ~+180 DEG C, heart yearn material is tinned wird, core structure n*0.2mm, and core section amasss>=0.25mm
2, diameter of wire 0.20mm, core insulation FEP.
Temperature measuring wire 4 performance requirement: (1) 60HZ, 1Kv, 1 minute, thermal resistance stands intact; (2) wire is connected tensile test with resistance, 160N, 15s, without distortion.
Temperature measuring wire is laid along magnetic pole 2 surface, and fix every the single shroud ring 5 of the long employing of 150mm, single shroud ring and magnetic pole backplane place's electric welding mode are fixed, and prevent from coming off, as shown in Figure 10, Figure 11; Merge leading-out wire and enter pen recorder along wheel arm.
Pen recorder is made up of thermometric registering instrument 103, vasculum 104, battery 102, cover plate etc.The vasculum 104 that thermometric registering instrument 103, battery 102 are made by stainless steel material is arranged on turbine-generator units inside, is welded in rotor wheel arm aperture, and presses close to generator shaft installation.Pad between the base plate of vasculum and turbine-generator units internals and establish rest pad 101, and removable side cover plate 105 and upper cover plate 106 are housed, see Fig. 3, Fig. 4.Upper cover plate 106 is provided with louvre 106a, and the limit that upper cover plate coordinates with generator shaft is cover plate arc limit 106b, and as shown in Figure 5, the radian of cover plate arc limit 106b is equal with generator shaft respective diameters place radian.
Thermometric registering instrument 103 establishes 2 altogether, and every part connects three temperature survey wires 4.Yellow screen recording instrument without paper selected by thermometric registering instrument, and the sampling period is selected 30 seconds (adjustable), and compared with traditional electric current and voltage method every 15 minutes points, data volume significantly increases.
Thermometric registering instrument possesses following performance:
1., truly under High Rotation Speed state, strong magnetic field circumstance, hot environment, data can be recorded;
2.PT100 measurement range-200 DEG C ~ 650 DEG C;
3. sample frequency: can select at 1 second, 2 seconds, 5 seconds, 10 seconds, 15 seconds, 30 seconds, 1 point, 2 points, 4 minutes, higher sample frequency can be obtained;
4. the sampling time is long, by every 30 seconds one group of data, and can continuous sampling 120 days;
5. possess statistical conversion function, support USB2.0 agreement, support USB flash disk capacity 2G.
In addition, Selection of Battery 24V direct supply, is composed in parallel by dry cell.
Vasculum random groups rotate, and when unit operation real time record rotor magnetic pole temperature.
Reading device is made up of mobile USB flash disk, notebook computer etc.After all data acquisitions, unit operation stops, and takes off thermometric registering instrument, reads data in registering instrument, and import notebook computer by USB flash disk, can execute-in-place, by computer, and display rotor magnetic pole temperature directly perceived, and can chart analysis be generated.
Each device that this method adopts can use for a long time, and image data is accurate, and integrated cost is low.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the structure after simple transformation of the present utility model.
Claims (10)
1. a power generator rotor magnetic pole temp measuring system, it is characterized in that comprising measurement mechanism, transfer device, pen recorder (1), reading device, described measurement mechanism comprises several Pt100 thermal resistances, and it is inner that this resistance is embedded in magnetic pole winding copper bar; Transfer device comprises the temperature measuring wire (4) be connected with each Pt100 thermal resistance, and temperature measuring wire is laid along magnetic pole (2) surface, and enters pen recorder along wheel arm; Pen recorder comprises thermometric registering instrument (103), battery (102), and thermometric registering instrument, battery are arranged on turbine-generator units inside by vasculum (104).
2. a kind of power generator rotor magnetic pole temp measuring system according to claim 1, is characterized in that several described Pt100 thermal resistances at least will be arranged at poletip middle, magnetic pole afterbody middle, middle, magnetic pole side, upper place, magnetic pole side, Xia Zhongchu position, magnetic pole side respectively.
3. a kind of power generator rotor magnetic pole temp measuring system according to claim 1, it is characterized in that described Pt100 thermal resistance is embedded in the deep trouth (3) that magnetic pole winding copper bar is provided with, Pt100 thermal resistance is lower than copper bar surface.
4. a kind of power generator rotor magnetic pole temp measuring system according to claim 1 or 2 or 3, is characterized in that described temperature measuring wire (4) is laid along magnetic pole (2) backboard, and adopts single shroud ring (5) to locate.
5. a kind of power generator rotor magnetic pole temp measuring system according to claim 1 or 2 or 3, it is characterized in that described vasculum (104) is pressed close to generator shaft and installed, be provided with rest pad (101) between the base plate of vasculum and turbine-generator units internals, and be provided with removable side cover plate (105) and upper cover plate (106).
6. a kind of power generator rotor magnetic pole temp measuring system according to claim 5, is characterized in that described upper cover plate (106) is provided with louvre (106a); Upper cover plate and the limit that generator shaft coordinates have the cover plate arc limit (106b) equal with generator shaft respective diameters place.
7. a kind of power generator rotor magnetic pole temp measuring system according to claim 1 or 2 or 3, is characterized in that described reading device comprises mobile memory, computer.
8. a kind of power generator rotor magnetic pole temp measuring system according to claim 1 or 2 or 3, is characterized in that described thermometric registering instrument (103) is recording instrument without paper, sampling period≤5 minutes.
9. a kind of power generator rotor magnetic pole temp measuring system according to claim 1 or 2 or 3, is characterized in that, described Pt100 thermal resistance measuring tempeature scope is 0 ~ 155 DEG C, measuring accuracy ± 1 DEG C.
10. a kind of power generator rotor magnetic pole temp measuring system according to claim 3, it is characterized in that described Pt100 thermal resistance is embedded in winding copper bar, namely offer deep trouth (3) at magnetic pole winding copper bar place, Pt100 thermal resistance buries gap-fill underground room temperature setting adhesives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389409.2U CN204064494U (en) | 2014-07-15 | 2014-07-15 | A kind of power generator rotor magnetic pole temp measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389409.2U CN204064494U (en) | 2014-07-15 | 2014-07-15 | A kind of power generator rotor magnetic pole temp measuring system |
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| CN204064494U true CN204064494U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420389409.2U Expired - Fee Related CN204064494U (en) | 2014-07-15 | 2014-07-15 | A kind of power generator rotor magnetic pole temp measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132442A (en) * | 2019-05-31 | 2019-08-16 | 哈动国家水力发电设备工程技术研究中心有限公司 | The magnetic pole surfaces loss measurement device of variable-ratio generator motor |
-
2014
- 2014-07-15 CN CN201420389409.2U patent/CN204064494U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132442A (en) * | 2019-05-31 | 2019-08-16 | 哈动国家水力发电设备工程技术研究中心有限公司 | The magnetic pole surfaces loss measurement device of variable-ratio generator motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20190715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |