DE102019103979A1 - Hydroelectric machine with a shaft standstill seal and method for leak testing - Google Patents
Hydroelectric machine with a shaft standstill seal and method for leak testing Download PDFInfo
- Publication number
- DE102019103979A1 DE102019103979A1 DE102019103979.7A DE102019103979A DE102019103979A1 DE 102019103979 A1 DE102019103979 A1 DE 102019103979A1 DE 102019103979 A DE102019103979 A DE 102019103979A DE 102019103979 A1 DE102019103979 A1 DE 102019103979A1
- Authority
- DE
- Germany
- Prior art keywords
- standstill seal
- seal
- valve
- source
- shaft
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000012360 testing method Methods 0.000 title claims description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
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- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/006—Sealing arrangements
-
- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/06—Bearing arrangements
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- 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
- F05B2240/00—Components
- F05B2240/57—Seals
-
- 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
- F05B2260/00—Function
- F05B2260/83—Testing, e.g. methods, components or tools therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Wasserkraftmaschine umfassend ein Laufrad (1), eine Welle (2), eine Wellendichtung (3) und eine Stillstands-Dichtung (4), wobei die Stillstands-Dichtung (4) als radial wirkende elastische Manschette ausgeführt, wobei die Wasserkraftmaschine ferner ein Manometer (5) zur Überwachung des Druckes in der Stillstands-Dichtung (4), eine Quelle (6) für ein Druckmedium und eine Ventilanordnung (7) umfasst, wobei die Ventilanordnung (7) wenigstens zwei Schaltzustände einnehmen kann, wobei im ersten Schaltzustand die Quelle (6) verschlossen und die Stillstands-Dichtung (4) mit der Atmosphäre verbunden ist, und im zweiten Schaltzustand die Quelle (6) mit der Stillstands-Dichtung (4) verbunden ist, wobei die Ventilanordnung (7) einen dritten Schaltzustand einnehmen kann, wobei die Quelle (6) verschlossen und die Stillstands-Dichtung (4) von der Atmosphäre abgetrennt ist.Hydropower machine comprising an impeller (1), a shaft (2), a shaft seal (3) and a standstill seal (4), the standstill seal (4) being designed as a radially acting elastic sleeve, the hydropower machine further comprising a manometer ( 5) for monitoring the pressure in the standstill seal (4), a source (6) for a pressure medium and a valve arrangement (7), wherein the valve arrangement (7) can assume at least two switching states, the source (6) 6) is closed and the standstill seal (4) is connected to the atmosphere, and in the second switching state the source (6) is connected to the standstill seal (4), the valve arrangement (7) being able to assume a third switching state, whereby the source (6) is closed and the standstill seal (4) is separated from the atmosphere.
Description
Die vorliegende Erfindung betrifft eine Wasserkraftmaschine mit einer Wellen-Stillstands-Dichtung und ein Verfahren zur Prüfung der Dichtigkeit dieser Stillstands-Dichtung.The present invention relates to a hydropower machine with a shaft standstill seal and a method for testing the tightness of this standstill seal.
Aus dem Stand der Technik sind gattungsgemäße Wasserkraftmaschinen bekannt. Die
Da die Wellendichtung von Wasserkraftmaschinen nur selten gewartet werden muss, kann es vorkommen, dass sich bei der Wartung herausstellt, dass die Stillstands-Dichtung versagt, weil die Dichtmanschette das Druckmedium nicht hält und dadurch die benötigte Dichtwirkung nicht mehr erzielt werden kann. Das kann zu einer gefährlichen Situation führen, bei der das gesamte Kraftwerk geflutet werden kann. Daher wäre es äußerst wünschenswert, wenn die Dichtigkeit einer solchen Stillstands-Dichtung vor einer Wartung der Wellendichtung geprüft werden könnte. Bei den bekannten Wasserkraftmaschinen mit Dichtmanschette ist dies jedoch praktisch nicht möglich, da dies nur nach dem Ausbau der Wellendichtung möglich wäre - nur so ist die Stillstands-Dichtung zugänglich.Since the shaft seal of hydropower machines rarely needs to be serviced, it may happen that the standstill seal fails during maintenance because the sealing sleeve does not hold the pressure medium and the required sealing effect can no longer be achieved. This can lead to a dangerous situation in which the entire power plant can be flooded. It would therefore be extremely desirable if the tightness of such a standstill seal could be checked before maintenance of the shaft seal. In the known hydropower machines with a sealing sleeve, however, this is practically not possible, since this would only be possible after the shaft seal had been removed - this is the only way to access the standstill seal.
Der Erfinder hat sich die Aufgabe gestellt, eine Wasserkraftmaschine mit einer solchen Stillstands-Dichtung anzugeben, bei der eine Dichtigkeitsprüfung der Dichtmanschette ohne Ausbau der Wellendichtung möglich ist.The inventor has set himself the task of specifying a hydropower machine with such a standstill seal, in which a leak test of the sealing sleeve is possible without removing the shaft seal.
Die gestellte Aufgabe wird durch eine Wasserkraftmaschine mit den Merkmalen des unabhängigen Vorrichtungsanspruchs gelöst. Vorteilhafte Ausführungsformen ergeben sich aus den davon abhängigen Unteransprüchen. Die Dichtigkeitsprüfung erfolgt gemäß dem unabhängigen Verfahrensanspruches.The task is solved by a hydropower machine with the features of the independent device claim. Advantageous embodiments result from the dependent claims dependent thereon. The leak test is carried out according to the independent process claim.
Die erfindungsgemäße Lösung wird nachfolgend anhand von Figuren erläutert. Darin ist im Einzelnen folgendes dargestellt:
-
1 Gattungsgemäße Wasserkraftmaschine; -
2 Erfindungsgemäße Wasserkraftmaschine; -
3 Ablaufdiagramm des Verfahrens zur Dichtigkeitsprüfung.
-
1 Generic hydroelectric machine; -
2nd Hydroelectric machine according to the invention; -
3rd Flow chart of the leak test procedure.
Im ersten Schaltzustand ist die Stillstands-Dichtung
Wenn die so bestimmte Leckage-Rate einen vordefinierten Wert nicht überschreitet, dann besitzt die Stillstands-Dichtung
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 3440635 A1 [0002]DE 3440635 A1 [0002]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019103979.7A DE102019103979A1 (en) | 2019-02-18 | 2019-02-18 | Hydroelectric machine with a shaft standstill seal and method for leak testing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019103979.7A DE102019103979A1 (en) | 2019-02-18 | 2019-02-18 | Hydroelectric machine with a shaft standstill seal and method for leak testing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102019103979A1 true DE102019103979A1 (en) | 2020-07-09 |
Family
ID=71104440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102019103979.7A Withdrawn DE102019103979A1 (en) | 2019-02-18 | 2019-02-18 | Hydroelectric machine with a shaft standstill seal and method for leak testing |
Country Status (1)
Country | Link |
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DE (1) | DE102019103979A1 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1035992B (en) * | 1954-07-30 | 1958-08-07 | Licentia Gmbh | Device for pressing a sealing ring onto a shaft collar or the like. |
US4109922A (en) * | 1976-04-28 | 1978-08-29 | Soudure Autogene Francaise | Sealing device for a vacuum enclosure |
DE3410742A1 (en) * | 1983-03-25 | 1984-09-27 | Peter Zürich Müller | METHOD AND DEVICE FOR SEALING TWO PARTS OF A MOVING BODY |
DE3440635A1 (en) | 1984-11-07 | 1986-05-22 | J.M. Voith Gmbh, 7920 Heidenheim | Method for sealing off the cover-side housing of hydraulic machines and machine for implementing the method |
US4799692A (en) * | 1986-08-12 | 1989-01-24 | The Regents Of The University Of California | Radial pressure flange seal |
DE102004037116A1 (en) * | 2004-07-30 | 2006-03-23 | Dr.Ing.H.C. F. Porsche Ag | Hydraulic linear drive, in particular hydraulic transmission actuator |
DE10065587B4 (en) * | 2000-12-28 | 2007-01-18 | B&V Industrietechnik Gmbh | Sealing device for rotating shafts, in particular stern tube seal for ships |
WO2013174716A1 (en) * | 2012-05-24 | 2013-11-28 | Norgren Gmbh | Fluid control system for an inflatable seal |
US9587500B2 (en) * | 2010-07-08 | 2017-03-07 | Turboden S.R.L. | Fluid sealing device for rotating machines |
US20180156208A1 (en) * | 2016-12-05 | 2018-06-07 | Compressor Products International, Llc | Inflatable static seal for a reciprocating rods |
-
2019
- 2019-02-18 DE DE102019103979.7A patent/DE102019103979A1/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1035992B (en) * | 1954-07-30 | 1958-08-07 | Licentia Gmbh | Device for pressing a sealing ring onto a shaft collar or the like. |
US4109922A (en) * | 1976-04-28 | 1978-08-29 | Soudure Autogene Francaise | Sealing device for a vacuum enclosure |
DE3410742A1 (en) * | 1983-03-25 | 1984-09-27 | Peter Zürich Müller | METHOD AND DEVICE FOR SEALING TWO PARTS OF A MOVING BODY |
DE3440635A1 (en) | 1984-11-07 | 1986-05-22 | J.M. Voith Gmbh, 7920 Heidenheim | Method for sealing off the cover-side housing of hydraulic machines and machine for implementing the method |
US4799692A (en) * | 1986-08-12 | 1989-01-24 | The Regents Of The University Of California | Radial pressure flange seal |
DE10065587B4 (en) * | 2000-12-28 | 2007-01-18 | B&V Industrietechnik Gmbh | Sealing device for rotating shafts, in particular stern tube seal for ships |
DE102004037116A1 (en) * | 2004-07-30 | 2006-03-23 | Dr.Ing.H.C. F. Porsche Ag | Hydraulic linear drive, in particular hydraulic transmission actuator |
US9587500B2 (en) * | 2010-07-08 | 2017-03-07 | Turboden S.R.L. | Fluid sealing device for rotating machines |
WO2013174716A1 (en) * | 2012-05-24 | 2013-11-28 | Norgren Gmbh | Fluid control system for an inflatable seal |
US20180156208A1 (en) * | 2016-12-05 | 2018-06-07 | Compressor Products International, Llc | Inflatable static seal for a reciprocating rods |
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Legal Events
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---|---|---|---|
R012 | Request for examination validly filed | ||
R230 | Request for early publication | ||
R120 | Application withdrawn or ip right abandoned |