EP2623732A1 - Assembly and method for dampening acoustic vibrations in such an assembly - Google Patents
Assembly and method for dampening acoustic vibrations in such an assembly Download PDFInfo
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- EP2623732A1 EP2623732A1 EP12153621.3A EP12153621A EP2623732A1 EP 2623732 A1 EP2623732 A1 EP 2623732A1 EP 12153621 A EP12153621 A EP 12153621A EP 2623732 A1 EP2623732 A1 EP 2623732A1
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- Prior art keywords
- plant
- resonance
- steam turbine
- pipeline
- resonance absorber
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/04—Antivibration arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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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
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
- F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators
Definitions
- the invention relates to a system, in particular a power plant, comprising a steam turbine and a diverter for bypassing a working medium for the steam turbine around the steam turbine as needed.
- the invention further relates to a method for damping acoustic vibrations in a corresponding system.
- a bypass station is also typically provided for the diversion of a working medium for the steam turbine around the steam turbine as required.
- a bypass station comprises a pipeline, with the aid of which the working medium is passed directly into a condenser instead of through the steam turbine.
- the pressurized working fluid in the pipeline often generates low-frequency sound with a frequency between 125 Hz and 8 kHz, which is transmitted via the pipeline into the condenser.
- the condenser acts like a loudspeaker, which emits the sound to the environment. This can not only lead to the annoyance of adjacent residential areas, but in the worst case to exceeding the permissible limits, which precludes issuing the operating permit of the power plant.
- the present invention seeks to provide a simpler solution for reducing the noise emission of power plants.
- the plant is in particular a power plant for the generation of electrical energy or an assembly of a corresponding power plant.
- the plant comprises a steam turbine and a bypass station for the diversion of a working medium for the steam turbine around the steam turbine as required, at least one resonance absorber being provided for the bypass station.
- Resonance absorbers as they are known in principle to those skilled in the art, are used primarily when it is expected that a sound emission with individual discrete frequencies or a few narrow frequency bands.
- resonance absorbers are suitable for use in such installations with relative simple technical means to attenuate the noise emission frequency selective, so that the characteristic of the sound absorber modified by the modified sound emission is changed so far that on the one hand, the prescribed limits are exceeded and on the other hand noise pollution adjacent residential areas is avoided.
- the resonance absorber is designed as a Helmholtz resonator.
- Corresponding Helmholtz resonators are well known to those skilled in the art and are used in various technical fields for manipulating the sound emission of devices or the acoustics in rooms. Accordingly, extensive data and empirical values are available, based on which an adaptation of such a Helmholtz resonator to the conditions of the system can be realized with reduced technical effort.
- the structure of the assembly of pipe and resonance absorber is thus substantially cylindrically symmetrical, the manufacturing cost of a corresponding assembly is kept low.
- bypass station comprises a pipeline and in which the resonance absorber is essentially formed by a chamber positioned next to the pipeline, which is conductively connected to the pipeline via a resonator neck.
- This variant can be realized with a relatively low technical effort.
- an embodiment of the system is advantageous in which the Helmholtz resonator is designed as a controllable Helmholtz resonator, wherein the resonance frequency of the Helmholtz resonator is adjustable.
- the adjustment of the resonant frequency is preferably carried out by varying the volume of a resonator of the Helmholtz resonator, for example, by a piston is displaced in a cylinder.
- the resonance absorber in the installed state on the system in which it is installed vote, so that according to the common parts principle for different systems, a single resonance absorber type can be used.
- an embodiment of the system is expedient in which a plurality of resonance absorbers are provided for damping one frequency or one narrow frequency band.
- the resonance absorbers are additionally coupled with absorption silencers, so that a specific damping behavior which is particularly well tuned to the respective installation is provided.
- the absorption silencers are typically formed by an absorption material such as mineral wool or stainless steel wool, which is introduced into at least one resonance body of at least one resonance absorber.
- the resonance absorber is positioned between a coolant injection and a condenser, since experience has shown that sound generation takes place in this region.
- the resonance absorber is preferably arranged at the location of the highest sound pressure.
- Another advantage is a variant of the system in which the resonance absorber has a resonator and wherein a tempering system is provided for the resonant body, with a substantially uniform temperature for the entire resonator is specified. Due to the temperature of the resonator body given for this uniform boundary conditions and consequently also given by the geometry of the resonator body natural frequency spectrum. In exactly this frequency spectrum then takes place the attenuation of the sound emission by the resonance absorber.
- the resonance body to specify the uniform temperature is flowed through an additional supply line from the working fluid.
- the working medium used to specify the uniform temperature for the resonant body is preferably taken from a position in the piping system for the working medium before the cooling medium injection. The removal takes place here in particular with the help of a simple spur line, so that the effort to realize the tempering system is at a very low level.
- the resonance body for draining condensate has drainage openings.
- This variant is particularly advantageous if water vapor is used as the working medium, since in this case it can be assumed that otherwise condensate would accumulate in the resonance bodies, whereby the damping characteristic of the resonance absorber would gradually deteriorate.
- the plant 2 is part of a power plant for generating electrical energy and includes for this purpose a steam generator 4, a condenser 6, a steam turbine 8, a bypass station 10 and a substantially constructed of piping line system 12, which the individual aforementioned assemblies connects and which is used for the management of a working medium, here water and water vapor.
- a working medium here water and water vapor.
- conduit system 12 for the water or water vapor, wherein in a load operation, the steam is passed through the steam turbine 8 and wherein in a no-load operation, the steam is passed through the bypass station 10.
- FIG. 2 A very expedient design variant of the diverter station 10 is in FIG. 2 shown in the manner of a block diagram.
- the diversion station 10 is constructed from a conduit 14, which is connected to the conduit system 12 via a controllable diverter valve 16.
- Downstream of the diverter valve 16 is a water injection 18, which is used if necessary for cooling the water vapor flowing through the conduit 14.
- the steam is introduced into the condenser 6 and brought there for condensation. Finally, the water thus returned to the condenser 6 is subsequently returned to the steam generator 4 by means of a water pump.
- a resonance absorber 20 is integrated into the bypass station 10, which, as in FIG. 3 indicated by way of example of three along the conduit 14 juxtaposed Helmholtz resonators 22 is constructed.
- Each Helmholtz resonator 22 is formed by a hollow cylindrical resonance body or an at least partially circumferential resonant chamber, which is conductively connected to the conduit 14 via a plurality of elongated holes 24 distributed over the circumference of the conduit 14.
- at least one drainage opening 26 is provided, via which a condensate accumulating in the resonance chamber can flow with gravity support.
- FIG. 4 An alternative embodiment of the resonance absorber 20 is shown in FIG. 4 shown.
- a single Helmholtz resonator 22 is provided with a single cylindrical resonance chamber, which is positioned between the water injection 18 and the condenser 6, as viewed in the flow direction of the steam, and is arranged next to the conduit 14.
- the Helmholtz resonator 22 is in this embodiment via a single acting as a resonator neck 28 opening conductively connected to the conduit 14 sound conducting.
- the Helmholtz resonator 22, as in FIG. 4 indicated designed as a controllable Helmholtz resonator 22, in which the resonant frequency or rather the resonant frequency spectrum is adjustable.
- the volume of the resonance chamber is varied by a change in position of a punch 30 with the aid of a controlled electric motor 32.
- the resonance absorber 20 can on the other hand fine tune the structural conditions of Appendix 2 on the one hand and the current operating conditions.
- water vapor if necessary with the aid of a controllable pump 34, is introduced into the resonance chamber of the Helmholtz resonator 22, wherein the corresponding water vapor is taken from the conduit 14 via a branch line 36 at a position in front of the water injection 18.
- the walls of the Helmholtz resonator 22 are tempered with relatively little technical effort such that a uniform temperature for the entire Helmholtz resonator 22 is given and the penetration of steam / water mixture or steam with possibly changing temperature is prevented in the resonator.
Abstract
Description
Die Erfindung betrifft eine Anlage, insbesondere ein Kraftwerk, umfassend eine Dampfturbine und eine Umleitstation zur bedarfsweisen Umleitung eines Arbeitsmediums für die Dampfturbine um die Dampfturbine herum. Die Erfindung betrifft weiter ein Verfahren zur Dämpfung akustischer Schwingungen bei einer entsprechenden Anlage.The invention relates to a system, in particular a power plant, comprising a steam turbine and a diverter for bypassing a working medium for the steam turbine around the steam turbine as needed. The invention further relates to a method for damping acoustic vibrations in a corresponding system.
Bei Kraftwerken besteht häufig die Notwendigkeit, Maßnahmen zur Reduzierung der Schallemission des Kraftwerks zu ergreifen, um die zulässigen Grenzwerte für die Schallemission nicht zu überschreiten.In power stations, there is often a need to take measures to reduce the noise emission of the power plant, so as not to exceed the permitted limits for the noise emission.
Werden in einem entsprechenden Kraftwerk beispielsweise Dampfturbinen eingesetzt, so ist typischerweise auch eine Umleitstation zur bedarfsweisen Umleitung eines Arbeitsmediums für die Dampfturbine um die Dampfturbine herum vorgesehen. Eine derartige Umleitstation umfasst dabei in der Regel eine Rohrleitung, mit deren Hilfe das Arbeitsmedium statt durch die Dampfturbine direkt in einen Kondensator geleitet wird. Dabei erzeugt das unter Druck stehende Arbeitsmedium in der Rohrleitung häufig niederfrequenten Schall mit einer Frequenz zwischen 125 Hz und 8 kHz, der über die Rohrleitung in den Kondensator übertragen wird. Der Kondensator wirkt hierbei wie ein Lautsprecher, der den Schall an die Umgebung abgibt. Dadurch kann es nicht nur zu einer Belästigung angrenzender Wohngebiete kommen, sondern im schlimmsten Fall zu einer Überschreitung der zulässigen Grenzwerte, was einer Erteilung der Betriebserlaubnis des Kraftwerkes entgegensteht.If, for example, steam turbines are used in a corresponding power plant, a bypass station is also typically provided for the diversion of a working medium for the steam turbine around the steam turbine as required. As a rule, such a bypass station comprises a pipeline, with the aid of which the working medium is passed directly into a condenser instead of through the steam turbine. In this case, the pressurized working fluid in the pipeline often generates low-frequency sound with a frequency between 125 Hz and 8 kHz, which is transmitted via the pipeline into the condenser. The condenser acts like a loudspeaker, which emits the sound to the environment. This can not only lead to the annoyance of adjacent residential areas, but in the worst case to exceeding the permissible limits, which precludes issuing the operating permit of the power plant.
Zur Reduzierung der Schallemission ist es derzeit üblich, aufwändig konstruierte Drossel-Systeme, beispielsweise aufgebaut aus verschiedenen Lochblechen, innerhalb der Rohrleitung zu platzieren.To reduce the noise emission, it is currently common, elaborately constructed throttle systems, for example, built from different perforated plates to place within the pipeline.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine einfachere Lösung zur Reduzierung der Schallemission von Kraftwerken anzugeben.Based on this, the present invention seeks to provide a simpler solution for reducing the noise emission of power plants.
Diese Aufgabe wird erfindungsgemäß durch eine Anlage mit den Merkmalen des Anspruchs 1 gelöst. Die rückbezogenen Ansprüche beinhalten teilweise vorteilhafte und teilweise für sich selbst erfinderische Weiterbildungen dieser Erfindung. Außerdem wird die Aufgabe erfindungsgemäß durch ein Verfahren mit den Merkmalen des Anspruchs 12 gelöst.This object is achieved by a system with the features of
Bei der Anlage handelt es sich insbesondere um ein Kraftwerk zur Generierung von elektrischer Energie oder um eine Baugruppe eines entsprechenden Kraftwerks. Die Anlage umfasst dabei eine Dampfturbine und eine Umleitstation zur bedarfsweisen Umleitung eines Arbeitsmediums für die Dampfturbine um die Dampfturbine herum, wobei für die Umleitstation zumindest ein Resonanzabsorber vorgesehen ist. Resonanzabsorber, wie sie dem Fachmann prinzipiell bekannt sind, werden vor allem dann eingesetzt, wenn eine Schallemission mit einzelnen diskreten Frequenzen oder wenigen schmalen Frequenzbändern zu erwarten ist. Da bei einer Anlage mit einer Umleitstation der eingangs genannten Art typischerweise ein Frequenzspektrum der Schallemission gegeben ist, welches von einzelnen Frequenzen oder wenigen schmalen Frequenzbändern im Bereich kleiner 500 Hz, teilweise auch höher, dominiert wird, eignen sich Resonanzabsorber, um bei derartigen Anlagen mit relativ einfachen technischen Mitteln die Schallemission frequenzselektiv zu dämpfen, so dass die Charakteristik der mittels der Resonanzabsorber modifizierten Schallemission soweit verändert wird, dass einerseits die vorgeschriebenen Grenzwerte unterschritten werden und andererseits eine Lärmbelästigung angrenzender Wohngebiete vermieden wird.The plant is in particular a power plant for the generation of electrical energy or an assembly of a corresponding power plant. The plant comprises a steam turbine and a bypass station for the diversion of a working medium for the steam turbine around the steam turbine as required, at least one resonance absorber being provided for the bypass station. Resonance absorbers, as they are known in principle to those skilled in the art, are used primarily when it is expected that a sound emission with individual discrete frequencies or a few narrow frequency bands. Since in a system with a diverter station of the type initially mentioned a frequency spectrum of the sound emission is given, which is dominated by individual frequencies or a few narrow frequency bands in the range of less than 500 Hz, sometimes even higher, resonance absorbers are suitable for use in such installations with relative simple technical means to attenuate the noise emission frequency selective, so that the characteristic of the sound absorber modified by the modified sound emission is changed so far that on the one hand, the prescribed limits are exceeded and on the other hand noise pollution adjacent residential areas is avoided.
In vorteilhafter Weiterbildung ist der Resonanzabsorber als Helmholtzresonator ausgeführt. Entsprechende Helmholtzresonatoren sind dem Fachmann wohl bekannt und werden in den verschiedensten technischen Gebieten zur Manipulation der Schallemission von Vorrichtungen oder der Akustik in Räumen eingesetzt. Dementsprechend sind umfangreiche Daten und Erfahrungswerte verfügbar, auf deren Basis eine Anpassung eines derartigen Helmholtzresonators an die Gegebenheiten der Anlage mit verringertem technischem Aufwand realisierbar ist.In an advantageous embodiment of the resonance absorber is designed as a Helmholtz resonator. Corresponding Helmholtz resonators are well known to those skilled in the art and are used in various technical fields for manipulating the sound emission of devices or the acoustics in rooms. Accordingly, extensive data and empirical values are available, based on which an adaptation of such a Helmholtz resonator to the conditions of the system can be realized with reduced technical effort.
Zweckmäßig ist weiter eine Ausführung der Anlage, bei der die Umleitstation eine Rohrleitung umfasst und bei der der Resonanzabsorber im Wesentlichen durch eine zumindest teilweise um die Rohrleitung umlaufende Kammer gebildet wird, die vorzugsweise über mehrere vorzugsweise gleichmäßig auf den Umfang der Rohrleitung verteilte Durchbruchs-Öffnungen mit der Rohrleitung schallleitend verbunden ist. Der Aufbau der Baugruppe aus Rohrleitung und Resonanzabsorber ist somit im Wesentlichen zylindersymmetrisch, wobei der Fertigungsaufwand für eine entsprechende Baugruppe gering gehalten wird.Expediently, an embodiment of the system in which the bypass station comprises a pipeline and in which the resonance absorber is essentially formed by an at least partially circulating around the pipe chamber, preferably with a plurality of preferably uniformly distributed on the circumference of the pipe opening openings the pipe is connected sound conductively. The structure of the assembly of pipe and resonance absorber is thus substantially cylindrically symmetrical, the manufacturing cost of a corresponding assembly is kept low.
Alternativ hierzu ist eine Variante der Anlage vorgesehen, bei der die Umleitstation eine Rohrleitung umfasst und bei der der Resonanzabsorber im Wesentlichen durch eine neben der Rohrleitung positionierte Kammer gebildet wird, die über einen Resonatorhals mit der Rohrleitung schallleitend verbunden ist. Auch diese Variante lässt sich mit einem verhältnismäßig geringen technischen Aufwand realisieren.Alternatively, a variant of the system is provided in which the bypass station comprises a pipeline and in which the resonance absorber is essentially formed by a chamber positioned next to the pipeline, which is conductively connected to the pipeline via a resonator neck. This variant can be realized with a relatively low technical effort.
Zudem ist eine Ausführung der Anlage von Vorteil, bei der der Helmholtzresonator als steuerbarer Helmholtzresonator ausgeführt ist, wobei die Resonanzfrequenz des Helmholtzresonators einstellbar ist. Die Einstellung der Resonanzfrequenz erfolgt dabei vorzugsweise durch Variation des Volumens eines Resonanzkörpers des Helmholtzresonators, indem beispielsweise ein Kolben in einem Zylinder verschoben wird. Auf diese Weise lässt sich der Resonanzabsorber im eingebauten Zustand auf die Anlage, in der dieser verbaut ist, abstimmen, so dass nach dem Gleichteile-Prinzip für verschiedene Anlagen ein einziger Resonanzabsorber-Typ eingesetzt werden kann.In addition, an embodiment of the system is advantageous in which the Helmholtz resonator is designed as a controllable Helmholtz resonator, wherein the resonance frequency of the Helmholtz resonator is adjustable. The adjustment of the resonant frequency is preferably carried out by varying the volume of a resonator of the Helmholtz resonator, for example, by a piston is displaced in a cylinder. In this way, the resonance absorber in the installed state on the system in which it is installed, vote, so that according to the common parts principle for different systems, a single resonance absorber type can be used.
Zweckmäßig ist darüber hinaus eine Ausführung der Anlage, bei der mehrere Resonanzabsorber zur Dämpfung jeweils einer Frequenz oder eines schmalen Frequenzbandes vorgesehen sind. Außerdem werden die Resonanzabsorber je nach Ausführungsvariante zusätzlich mit Absorptionsschalldämpfern gekoppelt, so dass ein spezifisches und auf die jeweilige Anlage besonders gut abgestimmtes Dämpfungsverhalten gegeben ist. Gebildet werden die Absorptionsschalldämpfer dabei typischerweise durch ein Absorptionsmaterial wie Mineralwolle oder Edelstahlwolle, welches in zumindest einen Resonanzkörper zumindest eines Resonanzabsorbers eingebracht ist.In addition, an embodiment of the system is expedient in which a plurality of resonance absorbers are provided for damping one frequency or one narrow frequency band. In addition, depending on the design variant, the resonance absorbers are additionally coupled with absorption silencers, so that a specific damping behavior which is particularly well tuned to the respective installation is provided. The absorption silencers are typically formed by an absorption material such as mineral wool or stainless steel wool, which is introduced into at least one resonance body of at least one resonance absorber.
Zweckmäßig ist weiter eine Variante der Anlage, bei der der Resonanzabsorber zwischen einer Kühlmediums-Einspritzung und einem Kondensator positioniert ist, da gerade in diesem Bereich erfahrungsgemäß die Schallerzeugung erfolgt. Allgemein wird der Resonanzabsorber bevorzugt am Ort des höchsten Schalldrucks angeordnet.It is also expedient to use a variant of the system in which the resonance absorber is positioned between a coolant injection and a condenser, since experience has shown that sound generation takes place in this region. In general, the resonance absorber is preferably arranged at the location of the highest sound pressure.
Von Vorteil ist außerdem eine Variante der Anlage, bei der der Resonanzabsorber einen Resonanzkörper aufweist und wobei für den Resonanzkörper eine Temperier-Anlage vorgesehen ist, mit der eine im Wesentlichen einheitliche Temperatur für den gesamten Resonanzkörper vorgegeben wird. Durch die Temperierung des Resonanzkörpers werden für diesen einheitliche Randbedingungen und infolgedessen auch ein durch die Geometrie des Resonanzkörpers gegebenes Eigenfrequenzspektrum vorgegeben. In genau diesem Frequenzspektrum erfolgt dann die Dämpfung der Schallemission durch den Resonanzabsorber.Another advantage is a variant of the system in which the resonance absorber has a resonator and wherein a tempering system is provided for the resonant body, with a substantially uniform temperature for the entire resonator is specified. Due to the temperature of the resonator body given for this uniform boundary conditions and consequently also given by the geometry of the resonator body natural frequency spectrum. In exactly this frequency spectrum then takes place the attenuation of the sound emission by the resonance absorber.
In vorteilhafter Weiterbildung wird der Resonanzkörper zur Vorgabe der einheitlichen Temperatur über eine zusätzliche Zuleitung vom Arbeitsmedium durchströmt. Dabei wird das zur Vorgabe der einheitlichen Temperatur für den Resonanzkörper genutzte Arbeitsmedium bevorzugt an einer Position im Leitungssystem für das Arbeitsmedium vor der Kühlmediums-Einspritzung entnommen. Die Entnahme erfolgt hierbei insbesondere mit Hilfe einer einfachen Stichleitung, so dass der Aufwand zur Realisierung der Temperier-Anlage auf einem sehr niedrigen Niveau liegt.In an advantageous embodiment of the resonance body to specify the uniform temperature is flowed through an additional supply line from the working fluid. In this case, the working medium used to specify the uniform temperature for the resonant body is preferably taken from a position in the piping system for the working medium before the cooling medium injection. The removal takes place here in particular with the help of a simple spur line, so that the effort to realize the tempering system is at a very low level.
Darüber hinaus ist es von Vorteil, wenn der Resonanzkörper zur Abführung von Kondensat Entwässerungs-Öffnungen aufweist. Diese Variante ist vor allem dann von Vorteil, wenn als Arbeitsmedium Wasserdampf zum Einsatz kommt, da in diesem Fall davon auszugehen ist, dass sich ansonsten Kondensat in den Resonanzkörpern sammeln würde, wodurch sich die Dämpfungscharakteristik des Resonanzabsorbers allmählich verschlechtern würde.Moreover, it is advantageous if the resonance body for draining condensate has drainage openings. This variant is particularly advantageous if water vapor is used as the working medium, since in this case it can be assumed that otherwise condensate would accumulate in the resonance bodies, whereby the damping characteristic of the resonance absorber would gradually deteriorate.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand einer schematischen Zeichnung näher erläutert. Darin zeigen:
- FIG 1
- in einer Blockschaltbilddarstellung eine Umleitstation mit einem Resonanzabsorber,
- FIG 2
- in einer Schnittdarstellung der Aufbau des Resonanzabsorbers und
- FIG 3
- in einer Schnittdarstellung eine alternative Umleitstation mit einem alternativen Resonanzabsorber.
- FIG. 1
- in a block diagram representation of a diverter with a resonance absorber,
- FIG. 2
- in a sectional view of the structure of the resonance absorber and
- FIG. 3
- in a sectional view of an alternative diversion station with an alternative resonance absorber.
Einander entsprechende Teile sind in allen Figuren jeweils mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.
Im nachfolgend beschriebenen Ausführungsbeispiel ist die Anlage 2 Teil eines Kraftwerks zur Erzeugung von elektrischer Energie und umfasst hierzu einen Dampferzeuger 4, einen Kondensator 6, eine Dampfturbine 8, eine Umleitstation 10 sowie ein im Wesentlichen aus Rohrleitungen aufgebautes Leitungssystem 12, welches die einzelnen zuvor genannten Baugruppen miteinander verbindet und welches zur Leitung eines Arbeitsmediums, hier Wasser und Wasserdampf, genutzt wird.In the embodiment described below, the
Wie in
Eine sehr zweckmäßige Ausgestaltungsvariante der Umleitstation 10 ist in
Zur Reduzierung der Schallemission der Anlage 2 ist in die Umleitstation 10 ein Resonanzabsorber 20 integriert, der wie in
Eine alternative Ausgestaltung des Resonanzabsorbers 20 ist in
Zudem wird bei Bedarf Wasserdampf, ggf. unter Zuhilfenahme einer ansteuerbaren Pumpe 34, in die Resonanzkammer des Helmholtzresonators 22 eingeleitet, wobei der entsprechende Wasserdampf über eine Stichleitung 36 an einer Position vor der Wassereinspritzung 18 aus dem Leitungsrohr 14 entnommen wird. Hierdurch werden die Wandungen des Helmholtzresonators 22 mit verhältnismäßig geringem technischen Aufwand derart temperiert, dass eine einheitliche Temperatur für den gesamten Helmholtzresonator 22 gegeben ist und das Eindringen von Dampf-/Wassergemisch bzw. Dampf mit evtl. wechselnder Temperatur in den Resonator verhindert wird.In addition, water vapor, if necessary with the aid of a
Die Erfindung ist nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. Vielmehr können auch andere Varianten der Erfindung von dem Fachmann hieraus abgeleitet werden, ohne den Gegenstand der Erfindung zu verlassen. Insbesondere sind ferner alle im Zusammenhang mit dem Ausführungsbeispiel beschriebenen Einzelmerkmale auch auf andere Weise miteinander kombinierbar, ohne den Gegenstand der Erfindung zu verlassen.The invention is not limited to the embodiment described above. Rather, other variants of the invention can be derived therefrom by the person skilled in the art without departing from the scope of the invention. In particular, all the individual features described in connection with the exemplary embodiment can also be combined with each other in other ways, without departing from the subject matter of the invention.
Claims (12)
insbesondere Kraftwerk (2),
umfassend eine Dampfturbine (8) und eine Umleitstation (10) zur bedarfsweisen Umleitung eines Arbeitsmediums für die Dampfturbine (8) um die Dampfturbine (8) herum,
dadurch gekennzeichnet, dass
für die Umleitstation (10) zumindest ein Resonanzabsorber (20) vorgesehen ist.Annex (2),
in particular power plant (2),
comprising a steam turbine (8) and a bypass station (10) for bypassing, as required, a working medium for the steam turbine (8) around the steam turbine (8),
characterized in that
at least one resonance absorber (20) is provided for the bypass station (10).
dadurch gekennzeichnet, dass
der Resonanzabsorber (20) als Helmholtzresonator (22) ausgeführt ist.Plant (2) according to claim 1,
characterized in that
the resonance absorber (20) is designed as a Helmholtz resonator (22).
dadurch gekennzeichnet, dass
die Umleitstation (10) eine Rohrleitung (14) umfasst und dass der Resonanzabsorber (20) im Wesentlichen durch eine zumindest teilweise um die Rohrleitung (14) umlaufende Kammer (22) gebildet wird, die über mehrere auf den Umfang der Rohrleitung (14) verteilte Durchbruchs-Öffnungen (24) mit der Rohrleitung (14) schallleitend verbunden ist.Plant (2) according to claim 2,
characterized in that
the bypass station (10) comprises a pipeline (14) and in that the resonance absorber (20) is essentially formed by a chamber (22) at least partially surrounding the pipeline (14) and distributed over a plurality of circumferences of the pipeline (14) Breakthrough openings (24) to the pipe (14) is conductively connected.
dadurch gekennzeichnet, dass
die Umleitstation (10) eine Rohrleitung (14) umfasst und dass der Resonanzabsorber (20) im Wesentlichen durch eine neben der Rohrleitung (14) positionierte Kammer (22) gebildet wird, die über einen Resonatorhals (28) mit der Rohrleitung (14) schallleitend verbunden ist.Plant (2) according to claim 2,
characterized in that
the bypass station (10) comprises a pipeline (14) and in that the resonance absorber (20) is essentially formed by a chamber (22) positioned next to the pipeline (14), which conducts sound via a resonator neck (28) to the pipeline (14) connected is.
dadurch gekennzeichnet, dass
der Helmholtzresonator (22) als steuerbarer Helmholtzresonator (22,30,32) aufgeführt ist, bei dem die Resonanzfrequenz einstellbar ist.Plant (2) according to one of claims 1 to 4,
characterized in that
Helmholtz resonator (22) is listed as a controllable Helmholtz resonator (22,30,32), in which the resonant frequency is adjustable.
dadurch gekennzeichnet, dass
mehrere Resonanzabsorber (20) zur Dämpfung jeweils eines schmalen Frequenzbandes vorgesehen sind.Plant (2) according to one of claims 1 to 5,
characterized in that
a plurality of resonance absorbers (20) are provided for damping each of a narrow frequency band.
dadurch gekennzeichnet, dass
der Resonanzabsorber (20) zwischen einer Kühlmediums-Einspritzung (18) und einem Kondensator (6) positioniert ist.Plant (2) according to one of claims 1 to 6,
characterized in that
the resonance absorber (20) is positioned between a cooling medium injection (18) and a condenser (6).
dadurch gekennzeichnet, dass
der Resonanzabsorber (20) einen Resonanzkörper (22) aufweist,
wobei für den Resonanzkörper (22) eine Temperier-Anlage (34,36) vorgesehen ist, mit der eine im Wesentlichen einheitliche Temperatur für den gesamten Resonanzkörper (22) vorgegeben wird.Plant (2) according to one of claims 1 to 7,
characterized in that
the resonance absorber (20) has a resonance body (22),
wherein a tempering system (34,36) is provided for the resonator (22), with a substantially uniform temperature for the entire resonator (22) is specified.
dadurch gekennzeichnet, dass
der Resonanzkörper (22) zur Vorgabe einer einheitlichen Temperatur über eine zusätzliche Zuleitung (36) vom Arbeitsmedium durchströmt wird.Plant (2) according to claim 8,
characterized in that
the resonant body (22) for setting a uniform temperature through an additional supply line (36) is flowed through by the working medium.
dadurch gekennzeichnet, dass
das zur Vorgabe der einheitlichen Temperatur für den Resonanzkörper (22) genutzte Arbeitsmedium an einer Position im Leitungssystem (12) für das Arbeitsmedium vor der Kühlmediums-Einspritzung (18) entnommen wird.Plant (2) according to claims 8 and 9,
characterized in that
the working medium used to specify the uniform temperature for the sound box (22) is taken at a position in the piping system (12) for the working fluid before the cooling medium injection (18).
dadurch gekennzeichnet, dass
der Resonanzkörper (22) zur Abführung von Kondensat Entwässerungs-Öffnungen (26) aufweist.Plant (2) according to claim 8,
characterized in that
the resonance body (22) for draining condensate drainage openings (26).
zur Dämpfung zumindest ein in die Umleitstation (10) integrierter Resonanzabsorber (20) genutzt wird.Method for damping acoustic vibrations in installations (2) with a steam turbine (8) and with a bypass station (10) for diversion of a working medium for the steam turbine (8) around the steam turbine (8) on demand, characterized in that
at least one resonance absorber (20) integrated in the diverting station (10) is used for damping.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12153621.3A EP2623732A1 (en) | 2012-02-02 | 2012-02-02 | Assembly and method for dampening acoustic vibrations in such an assembly |
EP12786933.7A EP2795074A2 (en) | 2012-02-02 | 2012-11-07 | Facility and method for damping acoustic vibrations in a corresponding facility |
US14/373,663 US20150016951A1 (en) | 2012-02-02 | 2012-11-07 | Plant and method for damping acoustic vibrations in a corresponding plant |
CN201280069012.9A CN104093943B (en) | 2012-02-02 | 2012-11-07 | The method of facility and the sonic vibration for decaying in corresponding facility |
JP2014555099A JP5911975B2 (en) | 2012-02-02 | 2012-11-07 | Plant and method for damping acoustic vibrations in a corresponding plant |
PCT/EP2012/071999 WO2013113417A2 (en) | 2012-02-02 | 2012-11-07 | Facility and method for damping acoustic vibrations in a corresponding facility |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12153621.3A EP2623732A1 (en) | 2012-02-02 | 2012-02-02 | Assembly and method for dampening acoustic vibrations in such an assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2623732A1 true EP2623732A1 (en) | 2013-08-07 |
Family
ID=47178657
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12153621.3A Withdrawn EP2623732A1 (en) | 2012-02-02 | 2012-02-02 | Assembly and method for dampening acoustic vibrations in such an assembly |
EP12786933.7A Withdrawn EP2795074A2 (en) | 2012-02-02 | 2012-11-07 | Facility and method for damping acoustic vibrations in a corresponding facility |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12786933.7A Withdrawn EP2795074A2 (en) | 2012-02-02 | 2012-11-07 | Facility and method for damping acoustic vibrations in a corresponding facility |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150016951A1 (en) |
EP (2) | EP2623732A1 (en) |
JP (1) | JP5911975B2 (en) |
CN (1) | CN104093943B (en) |
WO (1) | WO2013113417A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2924245A1 (en) * | 2014-03-24 | 2015-09-30 | Alstom Technology Ltd | Steam turbine with resonance chamber |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7429488B2 (en) | 2020-05-19 | 2024-02-08 | ダイハツ工業株式会社 | vehicle roof structure |
CN113776724A (en) * | 2021-08-12 | 2021-12-10 | 中国船舶重工集团公司第七一九研究所 | Pressure measuring device |
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CN101713387A (en) * | 2008-10-07 | 2010-05-26 | 赵玉天 | Maxwell demon heat resource and new refrigerating and air-conditioning concepts |
US20110005237A1 (en) * | 2007-07-27 | 2011-01-13 | Utc Power Corporation | Oil removal from a turbine of an organic rankine cycle (orc) system |
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US4979587A (en) * | 1989-08-01 | 1990-12-25 | The Boeing Company | Jet engine noise suppressor |
JPH0724595Y2 (en) * | 1990-04-25 | 1995-06-05 | 三菱重工業株式会社 | Bypass chimney of complex plant |
JPH0710460U (en) * | 1993-07-22 | 1995-02-14 | 愛知機械工業株式会社 | Resonator structure |
DE4414232A1 (en) * | 1994-04-23 | 1995-10-26 | Abb Management Ag | Device for damping thermoacoustic vibrations in a combustion chamber |
JPH0861605A (en) * | 1994-08-26 | 1996-03-08 | Mitsubishi Heavy Ind Ltd | Turbine bypass steam temperature controller |
JP3209889B2 (en) * | 1995-07-04 | 2001-09-17 | 川崎重工業株式会社 | Apparatus and method for preventing backflow of exhaust gas in gas turbine system |
JP4115021B2 (en) * | 1999-01-13 | 2008-07-09 | 株式会社大気社 | Silencer |
DE10026121A1 (en) * | 2000-05-26 | 2001-11-29 | Alstom Power Nv | Device for damping acoustic vibrations in a combustion chamber |
DE50110932D1 (en) * | 2000-12-08 | 2006-10-19 | Alstom Technology Ltd | Exhaust system with Helmholtz resonator |
US7055324B2 (en) * | 2003-03-12 | 2006-06-06 | Fisher Controls International Llc | Noise abatement device and method for air-cooled condensing systems |
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JP2006188996A (en) * | 2005-01-06 | 2006-07-20 | Mitsubishi Heavy Ind Ltd | Noise reducer of steam turbine facility |
JP4469346B2 (en) * | 2006-02-28 | 2010-05-26 | 日立Geニュークリア・エナジー株式会社 | Boiling water reactor |
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-
2012
- 2012-02-02 EP EP12153621.3A patent/EP2623732A1/en not_active Withdrawn
- 2012-11-07 JP JP2014555099A patent/JP5911975B2/en not_active Expired - Fee Related
- 2012-11-07 US US14/373,663 patent/US20150016951A1/en not_active Abandoned
- 2012-11-07 CN CN201280069012.9A patent/CN104093943B/en not_active Expired - Fee Related
- 2012-11-07 EP EP12786933.7A patent/EP2795074A2/en not_active Withdrawn
- 2012-11-07 WO PCT/EP2012/071999 patent/WO2013113417A2/en active Application Filing
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US20110005237A1 (en) * | 2007-07-27 | 2011-01-13 | Utc Power Corporation | Oil removal from a turbine of an organic rankine cycle (orc) system |
CN101713387A (en) * | 2008-10-07 | 2010-05-26 | 赵玉天 | Maxwell demon heat resource and new refrigerating and air-conditioning concepts |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2924245A1 (en) * | 2014-03-24 | 2015-09-30 | Alstom Technology Ltd | Steam turbine with resonance chamber |
US9920628B2 (en) | 2014-03-24 | 2018-03-20 | General Electric Technology Gmbh | Steam turbine with resonance chamber |
Also Published As
Publication number | Publication date |
---|---|
JP5911975B2 (en) | 2016-04-27 |
CN104093943B (en) | 2016-06-15 |
WO2013113417A3 (en) | 2014-03-20 |
US20150016951A1 (en) | 2015-01-15 |
WO2013113417A2 (en) | 2013-08-08 |
JP2015505589A (en) | 2015-02-23 |
CN104093943A (en) | 2014-10-08 |
EP2795074A2 (en) | 2014-10-29 |
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