EP4634511A1 - Wasserkraftmaschine mit einem laufrad mit verstellbaren schaufeln - Google Patents
Wasserkraftmaschine mit einem laufrad mit verstellbaren schaufelnInfo
- Publication number
- EP4634511A1 EP4634511A1 EP23828364.2A EP23828364A EP4634511A1 EP 4634511 A1 EP4634511 A1 EP 4634511A1 EP 23828364 A EP23828364 A EP 23828364A EP 4634511 A1 EP4634511 A1 EP 4634511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- radar system
- rod
- blades
- machine according
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines
- F03B3/06—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines with adjustable blades, e.g. Kaplan turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/14—Rotors having adjustable blades
- F03B3/145—Mechanisms for adjusting the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/80—Diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/80—Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
- F05B2270/805—Radars
Definitions
- the invention relates to a hydroelectric machine with an impeller with adjustable blades. Such impellers are also referred to as Kaplan impellers.
- the invention relates in particular to the control and vibration monitoring of such a hydroelectric machine.
- Such hydroelectric machines are known from the prior art.
- DE 329 528 B discloses such a hydroelectric machine.
- a gear arranged in the hub of the impeller is used to adjust the blade inclination.
- the gear is operated via a push rod, which is driven by a power piston arranged above the electric machine.
- a push rod is extended to form a feedback rod.
- the feedback movement is diverted to the control parts of the controller.
- the power piston is also arranged in the hub of the impeller and the control is carried out via a control device, which is usually referred to as a digital controller.
- a control device which is usually referred to as a digital controller.
- feedback of the blade position is still required to control the blade inclination.
- Complicated mechanical structures are usually required to transmit this information to the control device.
- the object of the invention is to provide a hydroelectric machine which is designed in such a way that the feedback information about the blade position can be transmitted to the control device with less mechanical effort.
- the solution according to the invention also enables vibration monitoring of the shaft of the hydroelectric machine.
- FIG.2 Detail of a hydroelectric machine according to the invention in a first embodiment
- FIG.4 Section perpendicular to the axis of rotation of another embodiment
- Fig.5 Section perpendicular to the axis of rotation of another embodiment
- Fig.6 Embodiment according to Fig. 2 with rotating radar system
- Fig.7 Embodiment according to Fig. 2 with stationary radar system
- FIG 1 shows a generic hydroelectric machine in a schematic representation.
- the hydroelectric machine comprises an impeller with a large number of adjustable blades, of which only one is shown and designated 1.
- the blades 1 are arranged on a hub, which is designated 2.
- the mechanism for adjusting the blades is arranged within the hub 2, which is only indicated in Figure 2.
- the impeller is connected to the hub 2 with a shaft, which in turn is connected to the rotor of an electrical machine.
- the shaft is designated 4 and the rotor 5.
- the shaft 4 can be made of one piece. Usually, however, it consists of two partial shafts, which are designated 4.1 and 4.2 in Figure 1.
- the partial shaft 4.1 is usually referred to as the turbine shaft or impeller shaft, and the partial shaft 4.2 is referred to as the generator shaft.
- the impeller rotates in a piece of pipe, which is usually referred to as the impeller ring.
- the impeller ring is designated 3.
- the rotor 5 rotates in a stator, which is designated with 6.
- the axis of rotation is indicated in the figure by the dashed line.
- the hydroelectric machine comprises a control device, which is designated with 12.
- the control device serves to regulate the blade inclination and can also be used to monitor the hydroelectric machine. These two functions can also be performed in separate units.
- the control device 12 is considered as a superior unit, which may comprise two or more separate or interconnected sub-units.
- the impeller ring 3, the stator 6 and the control device 12 belong to the stationary system of the hydroelectric machine, while all other components shown belong to the rotating system.
- FIG. 2 shows a detail of a hydroelectric power plant according to the invention. This is the area where the two partial shafts 4.1 and 4.2 are connected to one another. At this point, the two partial shafts form a flange.
- a rod that can be moved in the axial direction is arranged, which is designated with 7.
- the rod 7 is connected to the mechanism for adjusting the blades (not shown in Figure 2) in such a way that adjusting the blades 1 leads to an axial movement of the rod 7. In the embodiment shown, this connection is realized by the thinner rod leading downwards into the hub.
- the rod 7 moves up or down, depending on the direction in which the blades are adjusted. This is indicated in Figure 2 by the double arrow.
- An extension arm is attached to the rod 7.
- the extension arm 8 projects out from the interior of the impeller shaft 4.1 through a gap in the impeller shaft 4.1 to such an extent that it projects beyond the flange in a direction perpendicular to the axis of rotation.
- the gap is designated 9.
- the gap 9 is designed in such a way that the extension arm 8 can follow the movement of the rod 7.
- the rod 7 and the gap 9 could also be arranged in the generator shaft 4.2.
- a hydroelectric power plant according to the invention comprises at least one radar system, which is indicated in Figure 2 by the rectangle designated 10.
- the radar system 10 is arranged in such a way that it can detect a part of the shaft 4 and the extension arm 8, ie that it can detect a distance to a part of the shaft 4 and a distance to the extension arm 8.
- the dashed lines indicate the field of view of the radar system.
- the part of the shaft 4 which is detected by the radar system is, in the embodiment shown, the top of the flange between the two partial shafts 4.1 and 4.2.
- the Radar system 10 is connected to control device 12.
- the radar system is designed so that it can transmit the detected distances to the control device. The difference between the distances represents the feedback information transmitted to control device 12.
- the radar system 10 can be designed, for example, as a CW or as an FMCW radar system.
- a CW or FMCW radar system usually comprises a transceiver with a transmitting and a receiving antenna and a control device.
- the transmitting and receiving antennas can be designed separately as two individual antennas or integrally as one antenna that can perform both the transmitting and receiving functions.
- the control device usually comprises a microprocessor that controls the transceiver, processes the received signal and ensures the connection to a computer that is also part of the radar system.
- the arrangement of rod 7, extension arm 8, gap 9 and radar system 10 shown in Figure 2 does not have to be arranged on the flange between the partial shafts 4.1 and 4.2.
- the elements mentioned could also be arranged on another part of the shaft 4. It is only important that the shaft 4 is designed at the relevant point in such a way that there is a defined distance between the part of the shaft 4 detected by the radar system 10 and the extension arm 8.
- the shaft can have a shoulder or a projection. It could also be a recess in the shaft 4.
- the arrangement according to the invention can thus also be implemented with a one-part shaft.
- Figure 3 shows a section perpendicular to the axis of rotation through the embodiment shown in Figure 2 in the area of the extension arm 8.
- the extension arm 8 optionally forms a platform at the outer end, which improves the detection of the extension arm 8 by the radar system 10.
- Figure 4 shows the same view as Figure 3 of a further embodiment of the present invention. The embodiment shown differs from the embodiment shown in Figure 3 in that it comprises two extension arms 8. For this purpose, the shaft 4 must have a further gap 9.
- Figure 5 shows the same view as Figure 3 of a further embodiment of the present invention.
- the embodiment shown differs from the embodiments shown in Figures 3 and 4 in that it comprises three extension arms 8 and three slots 9, and that a ring, designated 11, is attached to the outer end of the extension arms 8.
- the ring 11 is considered to be part of the extension arms 8 in the context of this document.
- Figure 6 shows the embodiment according to Figure 2.
- the difference to Figure 2 is that Figure 6 shows that the radar system 10 is attached to the shaft 4. This means that in the embodiment shown in Figure 6, the radar system 10 is part of the rotating system and rotates with the shaft 4. This allows the radar system 10 to continuously detect the distances.
- Figure 7 shows an embodiment in which the radar system 10 is part of the stationary system.
- the extension arm 8 or the extension arms 8 move periodically through the field of view of the radar system 10 during operation of the hydroelectric machine. As a result, the distances are periodically recorded by the radar system.
- the embodiment according to Figure 5 enables a continuous distance signal.
- This combination is shown in Figure 8.
- the embodiment shown comprises two radar systems 10 so that the distance is detected redundantly. The redundancy is to be considered optional.
- Two radar systems 10 as shown in Figure 5 also enable the calculation of any wobbling movement of the ring 11.
- the radar system or systems can be designed as a CW or as an FMCW radar system.
- CW radar systems and FMCW radar systems enable the implementation of the methods according to the invention, which are described below.
- the method according to the invention for controlling a hydroelectric machine comprises the following steps:
- the method according to the invention for monitoring the vibration of a hydroelectric machine comprises the following steps:
- the described arrangement according to the invention detects a vibration behavior of the shaft that exceeds a predefined level, it can generate a warning message and/or cause the hydroelectric machine to be shut down.
- the predefined limit values can be, for example, vibration amplitude values in certain frequency ranges. It is clear that the predefined limit values for the shaft 4 and a cantilever arm 8 can be different.
- the signal transmission between a rotating radar system can be wireless.
- the radar system can be powered by slip rings or a battery. It is also conceivable to generate the required energy through induction processes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022133500.3A DE102022133500B3 (de) | 2022-12-15 | 2022-12-15 | Wasserkraftmaschine mit einem Laufrad mit verstellbaren Schaufeln sowie Verfahren zu deren Regelung und Schwingungsüberwachung |
| PCT/EP2023/085032 WO2024126328A1 (de) | 2022-12-15 | 2023-12-11 | Wasserkraftmaschine mit einem laufrad mit verstellbaren schaufeln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4634511A1 true EP4634511A1 (de) | 2025-10-22 |
| EP4634511B1 EP4634511B1 (de) | 2026-02-11 |
Family
ID=89321474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23828364.2A Active EP4634511B1 (de) | 2022-12-15 | 2023-12-11 | Wasserkraftmaschine mit einem laufrad mit verstellbaren schaufeln |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4634511B1 (de) |
| DE (1) | DE102022133500B3 (de) |
| WO (1) | WO2024126328A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE329528C (de) | 1920-05-13 | 1920-11-22 | Dieter Thoma Dr Ing | Selbsttaetiger Regler fuer Wasserturbinen, deren Laufraeder verstellbar sind |
| DE1102060B (de) * | 1958-11-17 | 1961-03-09 | Maier Kg Maschf B | Rueckfuehreinrichtung an Fluessigkeits-Stellmotoren zum Verstellen der Laufradschaufeln von Wasserturbinen od. dgl. |
| SE220082C1 (de) * | 1963-04-29 | 1968-04-09 | ||
| JPS6090987A (ja) * | 1983-10-25 | 1985-05-22 | Ebara Corp | 可動翼を備えた流体機械の翼角制御装置 |
| JPS60142062A (ja) * | 1983-12-28 | 1985-07-27 | Hitachi Ltd | 可動翼水力機械のランナベ−ン操作装置 |
| JP2703427B2 (ja) * | 1991-08-27 | 1998-01-26 | 株式会社東芝 | 可変翼水力機械のランナ羽根角度検出装置 |
| DE4229430C2 (de) * | 1992-08-18 | 1994-06-16 | Herbert Riedmayer | Regelung einer Kaplan-Wasserturbine |
| JPH07270148A (ja) * | 1994-02-10 | 1995-10-20 | Toshiba Eng Co Ltd | 可動翼流体機械のランナ羽根開度検出装置 |
| DE19608342A1 (de) * | 1996-03-05 | 1997-09-11 | Voith Ag J M | Vorrichtung zur Ölversorgung der Laufradnabe einer Strömungsmaschine |
| DE102014215008A1 (de) * | 2014-07-30 | 2016-02-04 | Siemens Aktiengesellschaft | Verfahren zur Bestimmung eines Anstellwinkels von Rotorblättern einer Turbine und Turbinenaggregat |
| DE102020104347A1 (de) * | 2020-02-19 | 2020-12-31 | Voith Patent Gmbh | Strömungsmaschine mit verstellbaren Schaufelblättern und Betriebsverfahren |
-
2022
- 2022-12-15 DE DE102022133500.3A patent/DE102022133500B3/de active Active
-
2023
- 2023-12-11 WO PCT/EP2023/085032 patent/WO2024126328A1/de not_active Ceased
- 2023-12-11 EP EP23828364.2A patent/EP4634511B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024126328A1 (de) | 2024-06-20 |
| DE102022133500B3 (de) | 2024-03-14 |
| EP4634511B1 (de) | 2026-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2258944B1 (de) | Windturbinen-Steuerungsvorrichtung einer Vertikalachsen-Windturbine | |
| EP3175952B1 (de) | Vorrichtung und verfahren zum schleifen von rotationsmessern | |
| DE102007048061A1 (de) | Lenkaktuator für ein Steer-by-wire Schiffsteuersystem und Verfahren zum Betreiben des Lenkaktuators | |
| DE102009001393B4 (de) | Steuerstangenanordnung zum Verstellen von Rotorblättern eines Hubschraubers | |
| DE2852554A1 (de) | Rotor zum einsatz in einem stroemungsmedium | |
| WO2002064973A1 (de) | Azimuthsnachführung einer windkraftanlage | |
| WO2012140267A1 (de) | Vorrichtung und verfahren zum bestimmen einer blattposition und zum beenden einer sicherheitsfahrt | |
| EP2825451B1 (de) | Rotorblattsteuereinrichtung | |
| EP2796710B1 (de) | Verfahren und Steuerungsvorrichtung zum Verspannen einer Windnachführungsanordnung einer Windenergieanlage | |
| EP3237136B1 (de) | Vorrichtung und verfahren zur verstellung des messerspaltes bei trommelscheren zum querteilen von metallband | |
| EP3305657B1 (de) | Elektrische verstellpropeller-anordnung | |
| DE102022133500B3 (de) | Wasserkraftmaschine mit einem Laufrad mit verstellbaren Schaufeln sowie Verfahren zu deren Regelung und Schwingungsüberwachung | |
| EP4230565B1 (de) | Auslösevorrichtung für eine hebekippvorrichtung zum lösen der hebekippvorrichtung von einem generatorsegment, hebekippvorrichtung zum heben und kippen eines generatorsegments, verfahren zum heben und kippen eines generatorsegments, und verfahren zur montage einer hebekippvorrichtung an einem demontierten generatorsegment | |
| DE102013201162A1 (de) | Verfahren zur Azimutverstellung einer Windenergieanlage, Azimutverstellsystem und Windenergieanlage | |
| DE102023102887B3 (de) | Verfahren zur Messung der Drehzahl einer elektrischen Maschine | |
| DE202012100057U1 (de) | Orbitalschneider | |
| EP3865704A1 (de) | Rotorblatt, rotor und system mit rotor und rotorblatt | |
| EP4183924B1 (de) | Bodenbearbeitungswalze und verfahren zum betreiben einer bodenbearbeitungswalze | |
| DE3314601C2 (de) | ||
| EP3101179B1 (de) | Arbeitsgerät, insbesondere für eine baumaschine | |
| EP2981716B1 (de) | Verfahren und einrichtung zum ein- und/oder auskoppeln eines getriebe-hilfsantriebs, windenergieanlage | |
| DE102017111076B4 (de) | Verfahren und Vorrichtung zum Betreiben einer Zerkleinerungsvorrichtung mit einem ein großes Trägheitsmoment aufweisenden Rotor, insbesondere eines Hackers, Shredders, Refiners, Brechers oder einer Mühle | |
| WO2014095260A1 (de) | Schneidkopf für eine ultraschneidvorrichtung | |
| EP3078850A1 (de) | Rotor und verfahren zum einstellen eines blattstellwinkels eines rotorblatts am rotor | |
| EP3273054A1 (de) | Verfahren zur bestimmung einer einbauposition für einen drehantrieb in einer windenergieanlage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250715 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| INTG | Intention to grant announced |
Effective date: 20251208 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: F10 Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE) Effective date: 20260211 Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502023003030 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |