WO2005078403A2 - Dispositif pour determiner la puissance de moyens de production - Google Patents

Dispositif pour determiner la puissance de moyens de production Download PDF

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Publication number
WO2005078403A2
WO2005078403A2 PCT/EP2005/050313 EP2005050313W WO2005078403A2 WO 2005078403 A2 WO2005078403 A2 WO 2005078403A2 EP 2005050313 W EP2005050313 W EP 2005050313W WO 2005078403 A2 WO2005078403 A2 WO 2005078403A2
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
torque
generator
gas turbine
steam turbine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/050313
Other languages
German (de)
English (en)
Other versions
WO2005078403A3 (fr
Inventor
Hans-Gerd Brummel
Hans-Peter Heindel
Peter KRÄMMER
Uwe Linnert
Michael Willsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2005078403A2 publication Critical patent/WO2005078403A2/fr
Publication of WO2005078403A3 publication Critical patent/WO2005078403A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F01D17/04—Arrangement of sensing elements responsive to load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/12—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving photoelectric means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity

Definitions

  • the invention relates to a device for Bestim ⁇ mung of benefits at least two operating means transmit the rotational power by means of a common shaft with the axis thereof directed to a machine, wherein one each resource assigned to and facing towards the machine shaft part assigned by his Equipment experiences a torque that is a measure of the power output by the respective equipment.
  • the performance is one of the most important operating parameters in turbomachines, in particular gas turbines, which have a high specific fuel consumption for technical reasons. It is composed of two components: the actual performance of the turbine and the efficiency or heat consumption.
  • the efficiency or heat consumption is a measure of how much fuel per unit of time the gas turbine needs to generate a certain output. For reasons of comparability, this parameter is set to a certain constellation of the other ⁇ mental conditions according to ISO standard based, since the performance of gas turbines greatly on environmental conditions such as temperature, pressure and humidity dependent.
  • This method is common practice, especially for online efficiency determinations in the continuous operation of power plants.
  • This procedure is particularly difficult in the context of gas and steam technology, since it is a so-called single-shaft configuration in which both the gas and the steam turbine transfer their mechanical power to a common generator.
  • EP 0 800 645 B1 discloses a device with which the performance of gas and steam turbines in single-shaft systems can be determined.
  • the gas and steam turbines each transmit torque to the common shaft.
  • the torsion of the shaft due to the torques are determined according to the document by a shift of marks previously attached to the shaft.
  • the size of the displacement indicates how strongly the shaft is twisted so that conclusions can be drawn about the individual performance of the turbines.
  • a magnetoelastic sensor is able, among other things, to The difference in the mechanical tensile and compressive stress when a torque is applied to a shaft in the shaft surface is used. The change in the magnetic permeability due to the tensile and compressive stress is used.
  • a corresponding, non-contact sensor is in the data sheet: "Torque sensor 2000 , dat_20000404 "from the company” ProTurbo Surveillance Systems GmbH, 40883 Ratingen (DE) ".
  • the object of the present invention is to provide a device of the type mentioned at the outset which, compared to the prior art, offers a less sensitive and yet more precise measuring device with regard to the influences mentioned, which is also more flexible to handle and less expensive to install.
  • the invention is characterized by the features mentioned at the outset in that a torsion of the corresponding shaft part which is proportional to the respective torque is to be determined with the aid of at least one optical sensor.
  • Performance of the equipment with operational measurement technology It has almost the same precision on systems that are driven by only one piece of equipment via a shaft.
  • the high accuracy of the torsion measurements and the power measurements derived therefrom is ensured by a simple, insensitive optical sensor system.
  • the optical sensor can be a Moire interference sensor.
  • a Moire interference sensor With a Moire interference sensor, the smallest displacements can be visualized in the simplest way.
  • the moiré interference sensor consists of two disks that are spaced apart from one another and have radially configured line scales with different line periods, so that a moiré pattern can be generated, which are arranged in this way on the respective shaft section that there is a distance between their two fixings, so that the torsion of the shaft section within the distance rotates the two disks relative to one another and the moire pattern can thereby change, which can be detected by means of a detector device.
  • the sensitivity of the measurement can be set as easily as possible over a wide range by selecting the different line periods. The device is therefore conceivable both for applications with a relatively large torsional amplitude and for applications with a very small torsional amplitude.
  • N x is the number of lines on one of the two disks
  • N 2 is the number of lines on the other disk.
  • Another possibility of adjusting the sensitivity results in the present invention by the choice of the distance the fixation of the two discs on the shaft.
  • Another advantage of this configuration is that the moire pattern changes as it were a multiple gain represents the torsion ⁇ amplitude. This device is therefore insensitive to vibrations or the play of the shaft, which can be of the order of magnitude of the torsional amplitude or larger.
  • both plates are transparent to light and the detector of an optical transmitting unit and a receiving unit exists, arranged in such a way be ⁇ that the change in the moire pattern by Trans ⁇ mission is to detect light through the two discs ,
  • This configuration allows the measuring device to be installed as simply as possible.
  • one pane is transparent to light, while the other pane is reflective to light and the detector consists of a combined transmitter and receiver unit, arranged in such a way that light, emitted by the transmitter and receiver unit through the transparent Disc meets the second disc, where it is reflected to the transmitter and receiver unit and thus the change in the moire pattern can be detected.
  • This space-saving design is particularly advantageous for turbine systems with relatively short shaft parts.
  • the invention is characterized by the features mentioned at the outset in that a mechanical tension of the corresponding shaft part which is proportional to the respective torque is to be determined with the aid of at least one magnetic sensor.
  • the advantage of this device is the possibility for online evaluation of the performance of the equipment with operational measurement for systems in a single-shaft configuration, on which several equipment is arranged on a shaft. perform technology. It has almost the same accuracy as in systems that are driven by only one piece of equipment via a shaft. The high accuracy of the mechanical voltage measurements and the power measurements derived from them is guaranteed by a simple, insensitive magnetic sensor system.
  • the at least one magnetic sensor may be a magneto-elastic sensor ⁇ . Since the magnetoelastic sensor is sensitive to the mechanical tensile and compressive stresses in the corresponding shaft part, a torque can be determined in spite of very small torsions of large power plant shafts. Since the torque measurement is also contactless, no mechanical changes need to be made to the corresponding shaft part, and no additional components for measurement have to be attached to the corresponding shaft part. In addition, only one free shaft section of approximately 10 cm in the longitudinal direction of the shaft part is required for installation of the magnetoelastic sensor.
  • a signal processing device for processing measured signals perform a magnetoelastic sensor of the least.
  • the measurement signals supplied directly by the at least one magnetoelastic sensor are not suitable for direct transmission to process control systems with which, for example, gas and steam turbine systems are monitored and controlled.
  • the signal processing device With the signal processing device, the measurement signals can be processed into signals suitable for the process control systems.
  • the device according to the invention should be designed with at least one temperature measuring device for determining the temperature of the corresponding shaft part and the magnetoelastic sensor.
  • infrared thermometers can be used, for example, which receive and evaluate the radiated heat radiation for non-contact temperature measurement.
  • the prevailing temperatures must be observed in order to be able to correctly interpret the measurement results.
  • measures such as cooling of corresponding components can be initiated in order, for example, to keep the at least one magnetic, in particular magneto-elastic sensor at a constant temperature.
  • the signal processing device has means for compensating for measurement signal changes attributable to temperature changes in the corresponding shaft part.
  • measurement signal deviations which are due to a temperature drift of the at least one magnetoelastic sensor and the corresponding shaft part, can be corrected in a particularly simple manner during the preparation of the measurement signal. Since the correction takes place during signal processing of the measurement signal, it is possible to react immediately to temperature fluctuations.
  • the device according to the invention with at least one distance measuring device for of destination of the distance of the at least a magnetic, in particular magneto-elastic sensor for respective shafts ⁇ part.
  • the distance between the at least one magnetic, in particular magneto-elastic, sensor and the corresponding shaft surface also has a sensitive influence on the measurement result, so that changes in distance, for example caused by vibrations or the play of the shaft, significantly affect that of the at least one magnetic sensor. see, in particular magnetoelastic sensor delivered measurement signal affect. Knowledge of the current distance can be included in the evaluation of the measurement results in order to avoid misinterpretations.
  • the signal processing device has means for compensating measurement signal changes that can be traced back to changes in the distance of the at least one magnetoelastic sensor from the corresponding shaft part. Since the compensation is done in the signal processing of the Messsig ⁇ Nals, the recyclable to the changes in distance measurement signal changes may be corrected directly in the measurement signal processing. This is particularly suitable for rapid changes in distance, such as those caused by wave vibrations.
  • the device according to the invention with at least one servomotor acting on the at least one magnetic, in particular magneto-elastic sensor for changing the distance of the at least one magnetic, in particular magneto-elastic sensor from the corresponding shaft part.
  • the at least one servomotor acting on the at least one magnetic, in particular magneto-elastic sensor for changing the distance of the at least one magnetic, in particular magneto-elastic sensor from the corresponding shaft part.
  • the at least two flow machines can advantageously be a gas and a steam turbine, while the machine is a generator. This is a frequently ⁇ striking design, as found in gas and steam turbine power plants.
  • the generator is advantageous for the generator to be arranged between the two turbomachines, at least one optical sensor being arranged between the turbomachines and the generator.
  • This arrangement ensures that the forces acting on the shaft are distributed more evenly over the entire shaft, since each shaft part is only driven by one turbine. This means a lower load for the shaft, so that it can be designed with a lower weight overall.
  • the steam turbine can also advantageously be arranged between the gas turbine and the generator, with at least one optical sensor being arranged between the gas turbine, the steam turbine and the generator.
  • at least one optical sensor being arranged between the gas turbine, the steam turbine and the generator.
  • less complex generators can be used, the construction of which does not require a continuous shaft.
  • the power P DT of the steam turbine and the power P GT of the gas turbine from a torque M GT of the gas turbine to be recorded, a torque M DG to be recorded at the shaft part between the steam turbine and generator and a total terminal power to be recorded.
  • device P gene of the generator according to the equations
  • the gas turbine between the steam turbines can be arranged ⁇ the generator ne and wherein each Any artwork least an optical sensor between the steam turbine, gas turbine and generator is arranged. Even with this configuration of the device, less expensive generators can be used, the construction of which does not require a continuous shaft.
  • both an optical and a magnetic sensor for torque measurement.
  • both sensors can redundantly measure the torque present on a shaft part.
  • FIG. 1 shows a single-shaft system in which a generator is arranged between a gas turbine and a steam turbine
  • FIG. 2 shows a single-shaft system in which a steam turbine is arranged between a generator and a gas turbine
  • FIG. 3 shows a single-shaft system in which a gas turbine is between a generator and a Steam turbine is arranged
  • FIG. 4 shows a moire interference sensor in a transmission configuration
  • FIG. 5 shows a moire interference sensor in a reflection configuration
  • FIG. 6 shows a moire interference sensor which is designed as an intermediate piece of a shaft of a single-shaft system
  • FIG. 7 shows a moire interference sensor, which is designed as a push-on part for a shaft of a single-shaft system, in a side view
  • 8 shows a Moire interference sensor, which is designed as a plug-on part for a shaft of a single-shaft system, in cross section
  • Figure 9 shows a torque measuring device with a magnetoelastic sensor, electronic temperature drift compensation and electronic distance correction and
  • Figure 10 shows a torque measuring device with a magnetoelastic sensor, electronic temperature drift compensation and mechanical distance correction.
  • FIG. 1 shows a single-shaft system in which a generator 4 is arranged between a gas turbine 1 and a steam turbine 8.
  • Figure 2 shows a single shaft, in a steam turbine 8 between a generator 4, and a gas turbine 1 placed currency ⁇ rend
  • Figure 3 is a single-shaft, is disposed in a gas turbine 1 between a generator 4, and a steam turbine.
  • 1 denotes a gas turbine, 2 and 11 shaft parts between the gas turbine and generator, 3 a torque measuring device for the power component of the gas turbine in the form of an optical sensor, 4 a generator, 5 and 9 shaft parts between the steam turbine and generator, 6 a torque measuring device for the power share of the steam turbine in the form of an optical sensor, 7 an optional coupling, 8 a steam turbine and 10 a torque measuring device for the total power on the generator.
  • measuring devices in the form of optical and / or magnetic sensors 3, 6 and 10 are provided on the corresponding shaft parts 2, 5, 9 and 11 between the components gas turbine 1, steam turbine 8 and generator 4 the respective determination of the torsion and / or of mechanical stresses and thus of torques.
  • the mechanical stresses in the shaft parts 2, 5, 9 and 11, the torsion and the forces acting on the shaft members 2, 5, 9 and 11 are torques to one another directly proporti ⁇ onal.
  • the ratio of the torques which the shaft parts 2, 5, 9 and 11 experience from the gas turbine 1 and the steam turbine 8 is a direct measure of the distribution of the power shares of the gas turbine 1 and the steam turbine 8.
  • the gas turbine 1 and the steam turbine 8 can be directly assigned to the two shaft parts 2 and 5 to the left and right of the generator.
  • the following calculation process applies:
  • the corresponding fuel mass flow for the gas turbine 1 is indirectly by using a gas turbine thermo- dynamic simulation model determined.
  • the calculation includes parameters that reflect the environmental conditions. These are, for example, the ambient temperature, the ambient air pressure, the relative humidity and losses, such as pressure losses in the intake and exhaust section of the turbine.
  • M DT the measured torque on the shaft part 5 between the steam turbine 8 and the generator 4
  • M DG the measured total torque on the shaft part 9 between the steam turbine 8 and the generator 4
  • P Gen understood the measured generator terminal power.
  • the steam turbine 8 can be disengaged with an optionally arranged coupling 7, which is shown in FIG.
  • the gas turbine 1 in which the generator terminal power displayed exclusively reflects the power portion of the gas turbine 1, a characteristic curve is taken of the Drehmo ⁇ mentes depending on the generator terminal performance.
  • the torque is then measured on the gas turbine shaft 2 and a further characteristic curve is recorded. By comparing the two characteristic curves, the associated generator terminal power component of the gas turbine 1 can be determined immediately.
  • FIGS. 4 to 8 show embodiments of a Moire interference sensor.
  • the figures in the figures denote
  • a torsion path 17 on the shaft part 16, on which the sensor is arranged is initially required.
  • radially configured line scales 20 are positioned on disks 12, 11 and 24, respectively, via corresponding auxiliary structures.
  • the disks 12, 11 and 24 are provided on the same length with line scales 20 slightly different number of lines Ni and N 2 .
  • the two disks 12, 11 and 24 are placed close together. Is from the outside a light ⁇ directed to the arrangement of beam 21, it passes through both disks 12, 11 and 24 and is depending on the position of the bars on the scales 20 let through, slightly weakened or completely hidden.
  • the patterns resulting from the superimposition of the two scales 20 are characterized by light-dark areas. Due to the different periods of the two scales 20, the following property results for the position of the light-dark areas. If the two scales 20 are displaced by a line against each other due to torsion, the dark area makes one revolution along the scale 20 on the disk 12. The dark area now serves as a scale, so that the individual lines do not have to be detected individually. This effect allows the torsion angle to be increased almost as desired and the torsion to be read more easily. The reading from the outside can be done by measuring the light 22 coming back from the scale 20. The number of light-dark maxima is given by the difference in the number of lines of the two overlapping scales 20. Thus, depending on the number of measurement points required over a full range, which are given by the maxima, the number of lines on the scales 20 must be varied absolutely and relative to one another.
  • the maxima may also have a second double scale with exchanged periods be ⁇ be used. On this second double scale, the maxima move in torsion opposite to the other scale 20. If the angle of rotation is not known, the relative position of the maxima of both double scales is a measure of the torsion.
  • scales 20 for the present principle which are not based optically but on electrical principles, on mechanical principles or on ultrasound. Capacitive measurement methods are conceivable for electrical principles and acoustic measurement methods for mechanical principles. In principle, scales 20 with a changed period are also conceivable.
  • the receiver unit 15 or 19 With the receiver unit 15 or 19, the very small, generally “quickly” passing individual lines before being detected, but only the spatially extended light-dark maxima. For this, the receiver signals with a significantly lower cutoff frequency must be evaluated.
  • the absolute position of the light-dark pattern relative to the angular position of the shaft part 16 or the relative phase between the patterns of two scales 20 is a measure of the torsion and thus the torque. This information is already generated on the shaft part 16. It can be captured from the outside with optical or image technology methods during the rotary movement or even while standing.
  • a light beam 21 is directed by a fixed transmitter 14 and receiver unit 15 or 19 onto the moiré scale and the light modulated there is detected by means of one or more photodetectors.
  • measurements can be made once in transmission with separate transmitter unit 14 and receiver unit 15, as shown in Figure 4, or in reflection with a combined transmitter and receiver unit 19, as shown in Figure 5.
  • Todetektorsignalen from the Pho ⁇ and the rotational speed can electronically shifting the cut-off zones to be determined. Since the signals virtually continuously vorlie ⁇ gen, this can be done according continuously.
  • the absolute angle of rotation must also be recorded. If you work with two counter-rotating double scales, the relative distance can be used as a measure of the torque, only the speed of rotation is then involved.
  • FIGS . 6 to 8 show two embodiments for attaching the measuring device 3, 6 and 10 to shaft parts 16.
  • Figure 6 shows a torque sensor 3, 6 and 10, which is designed as an intermediate piece between two shaft parts 16. The connections to the respective shaft parts 16 are made via two flanges 23 with which the measuring device can be screwed to the shaft parts 16, for example.
  • the embodiment of the torque sensor 3, 6 and 10 shown in FIGS. 7 and 8 is designed as a plug-on part.
  • FIG. 7 shows the side view
  • FIG. 8 shows the cross section of part of the measuring device 3, 6 and 10.
  • the torsion path 17 can be freely adjusted.
  • the measuring device 3, 6 and 10 as shown in Figure 8 illustrates ones shown, carried out in two corresponding parts that can be attached after the attachment of the shaft member 16 with corresponding ⁇ the means for fixing 25 together.
  • screws or clamps can be used as a means of fastening.
  • a torque measuring device with a magnetoelastic sensor 30 is shown schematically in FIG.
  • the sensor used is, for example, an embodiment as described in the aforementioned data sheet: “Torque sensor 2000, dat_20000404” from the company “ProTurbo Monitoring Systems GmbH, 40883 Ratingen (DE)”.
  • the magnetoelastic sensor 30 works without contact and is arranged at a distance d of approximately 0.75 mm from the shaft part surface 016.
  • a temperature measuring device 50 is arranged in the magnetoelastic sensor 30 such that the temperature of the shaft part 16, in particular the shaft part surface 016, and the sensor 30 can be determined during the measurement.
  • Infrared thermometers with an infrared radiation receiver can be used as temperature measuring device 50, for example.
  • magneto-elastic sensor 30 In magneto-elastic sensor 30.
  • a distance measuring device 40 is arranged such that the distance d between magnetoelastic sensor 30 and shaft part surface can be found in solution during the Mes ⁇ sixteenth
  • a capacitive distance measuring device can be used as the distance measuring device 40, for example.
  • Magnetoelastic sensor 30, temperature and distance measuring device 50 and 40 are arranged in a stationary manner. net. It is particularly advantageous, for example, that the magnetoelastic sensor 30 and the distance measuring device 40 have a common housing.
  • a measurement signal S30 from the magnetoelastic sensor 30 is transmitted to a signal processing device 60, in which it is processed for evaluation in a process control system 70.
  • the measurement signal S30 of the magnetoelastic sensor 30 and a measurement signal S50 of the temperature measurement device 50 are transmitted to a means 61 for compensating measurement signal changes attributable to temperature changes.
  • this compensation means 61 corrects the measurement signal S30 with respect to a temperature change electronically.
  • This corrected measurement signal S61 is further transmitted to a means 62 for compensating measurement signal changes that can be attributed to changes in the distance of the magnetoelastic sensor 30 from the shaft part 16.
  • a distance correction characteristic curve can be determined by means of a distance dependency of the magnetoelastic sensor 30 to the shaft partial surface 016 previously determined at constant temperature, with the aid of which the compensation means 62 also corrects the measurement signal S61 electronically with respect to a change in distance.
  • the measurement signal S62 which is now corrected for a change in temperature and distance, is further transmitted to a signal processing unit 63, with which it is sent to a processor for processing in Process control system 70 suitable signal S63 is processed.
  • FIG. 10 schematically shows a torque measuring device with a magnetoelastic sensor 30.
  • the essential difference from the illustration in FIG. 9 is that with this exemplary embodiment, possible changes in the distance of the magnetoelastic sensor 30 from the shaft part surface 016 are not compensated for electronically, but rather mechanically by means of a servomotor 90.
  • the measurement signal S40 is measured with the Information about the distance d from the distance measuring device 40 is transmitted to a control unit 80.
  • the control unit 80 of the instantaneous value of the distance d mm compared, 0.75 and driven in case of deviation, the servomotor 90 for restoring the setpoint distance by means of a corresponding control signal S80 with the previously determined reference value of ⁇ example.
  • the distance measuring device 40 can be arranged separately and independently of the magnetoelastic sensor 30 and servomotor 90, or, as indicated in the exemplary embodiment in FIG. 10, can also be formed in a common housing with the magnetoelastic sensor 30.
  • the servomotor 90 thus tracks the magnetoelastic sensor 30 together with the distance measuring device 40 in accordance with the change in distance.
  • the Messsig ⁇ nal S30 of the magnetoelastic sensor 30 and the measurement signal of the temperature measuring device transmits S50 50 to the means 61 for compensation of recyclable to changes in temperature measurement signal changes.
  • the measurement signal S61 which is electronically corrected there with respect to a temperature change, is then fed to the signal processing unit 63 for signal processing, from where the processed signal S63 is sent to the process control system 70.
  • the compensation means 62 for the electronic correction of a change in distance can be connected. This is particularly useful and advantageous if there are changes in distance with a high frequency.
  • the mechanical correction method has an advantage over the electronic compensation unit 62, because in the event that the distance d between the magnetic sensor 30 and the shaft part surface 016 becomes greater than the measuring range in which a measurement is made after the magnetoelastic effect is still possible, the sensor 30 can be adjusted with the servomotor 90 until the required measuring range is reached. In this case, however, the electronic correction unit 62 receives no or no usable measurement signal from the magnetoelastic sensor 30 and is therefore ineffective.
  • Electrical conductors are preferably provided for the transmission of the measurement signals S30, S40, S50, S61, S62, S63 and S80.
  • the distance and temperature measuring devices 40 and 50, on the one hand, and the signal processing device 60, on the other hand, or between the signal processing device 60 and the process control system 70, radio and / or light transmission devices are also conceivable for signal transmission.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un dispositif pour déterminer la puissance d'au moins deux moyens de production (1, 8) qui transmettent une énergie de rotation à une machine (4) au moyen d'un arbre commun à axe orienté. Une partie d'arbre (2, 5) associée à chacun des moyens de production (1, 8) et orientée vers la machine (4) est soumise à un couple par le moyen de production (1, 8) qui lui est associé. Ce couple est une grandeur de la puissance développée par le moyen de production (1, 8). En outre, ledit couple provoque une torsion ou une tension mécanique proportionnelle de la partie d'arbre (2, 5), cette torsion ou cette tension étant à déterminer à l'aide d'au moins un capteur (3, 6) optique ou magnétique.
PCT/EP2005/050313 2004-02-11 2005-01-25 Dispositif pour determiner la puissance de moyens de production Ceased WO2005078403A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004006754 2004-02-11
DE102004006754.6 2004-02-11
DE102004041899 2004-08-30
DE102004041899.3 2004-08-30

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Publication Number Publication Date
WO2005078403A2 true WO2005078403A2 (fr) 2005-08-25
WO2005078403A3 WO2005078403A3 (fr) 2006-01-12

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PCT/EP2005/050313 Ceased WO2005078403A2 (fr) 2004-02-11 2005-01-25 Dispositif pour determiner la puissance de moyens de production

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DE (1) DE102005002966A1 (fr)
WO (1) WO2005078403A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2022945A1 (fr) * 2007-08-10 2009-02-11 Siemens Aktiengesellschaft Procédé destiné au fonctionnement d'une installation de turbine de centrale et dispositif de réglage pour une installation de turbine de centrale
EP2113742A1 (fr) * 2008-04-30 2009-11-04 Baumer Electric AG Dispositif de mesure doté d'un balayage à deux canaux
CN110849518A (zh) * 2019-10-14 2020-02-28 中国北方发动机研究所(天津) 一种轴向力电磁平衡装置及测功机装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2022945A1 (fr) * 2007-08-10 2009-02-11 Siemens Aktiengesellschaft Procédé destiné au fonctionnement d'une installation de turbine de centrale et dispositif de réglage pour une installation de turbine de centrale
EP2113742A1 (fr) * 2008-04-30 2009-11-04 Baumer Electric AG Dispositif de mesure doté d'un balayage à deux canaux
US8239161B2 (en) 2008-04-30 2012-08-07 Baumer Electric Ag Measuring device with two-channel sampling
EP2113742B1 (fr) 2008-04-30 2015-11-18 Baumer Electric AG Dispositif de mesure doté d'un balayage à deux canaux
CN110849518A (zh) * 2019-10-14 2020-02-28 中国北方发动机研究所(天津) 一种轴向力电磁平衡装置及测功机装置
CN114718667A (zh) * 2022-03-02 2022-07-08 北京迪比爱新能源科技有限公司 一种6mw抽凝式汽轮机快速启动控制方法
CN114718667B (zh) * 2022-03-02 2023-11-17 北京迪比爱新能源科技有限公司 一种6mw抽凝式汽轮机快速启动控制方法

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