EP2910741A1 - Heatable push rod for a steam turbine - Google Patents
Heatable push rod for a steam turbine Download PDFInfo
- Publication number
- EP2910741A1 EP2910741A1 EP14156366.8A EP14156366A EP2910741A1 EP 2910741 A1 EP2910741 A1 EP 2910741A1 EP 14156366 A EP14156366 A EP 14156366A EP 2910741 A1 EP2910741 A1 EP 2910741A1
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- EP
- European Patent Office
- Prior art keywords
- housing
- rotor
- steam
- turbine
- push rod
- 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.)
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Classifications
-
- 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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
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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
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/502—Thermal properties
- F05D2300/5021—Expansivity
Definitions
- the invention relates to an arrangement comprising a first sub-turbine having a first rotor and a first housing, a second sub-turbine having a second rotor and a second housing, and a push rod connecting the first housing to the second housing.
- the invention relates to a method for operating a steam turbine, wherein the steam turbine comprises at least two sub-turbines, wherein in each case a sub-turbine has a housing and a rotor and the housing are coupled to each other via push rods.
- Steam turbines usually have several sub-turbines and are designed for steam parameters that have up to 630 ° C at a pressure of 350 bar. Such high steam parameters pose a challenge to the entire steam turbine. Thermal expansion effects cause games to be scaled up or down between the housing and the rotor.
- the shaft train of a steam turbine can thermally expand more during operation than the housing. Due to the need to allow such an axial offset and the partial conical shape of the housing results in higher gap losses. Therefore, the housing parts are coupled together by means of push rods. This means that the rigid coupling with the push rods, a movement of a housing leads to a movement of the adjacent housing, which are interconnected via the push rod. According to the prior art, the push rods maintain their length, so that the rotor continues to experience an axial offset relative to the housing due to its higher temperature.
- Hydraulic systems could adapt the axial offset of the housings to the position of the shafts.
- an actively controlled system has the disadvantage that damage to the steam turbine would be expected in the event of a failure of the system, since the game reserve is reduced to reduce the gap.
- the object of the invention is therefore to increase the steam turbine efficiency.
- This object is achieved by an arrangement comprising a first turbine part with a first rotor and a first housing, a second turbine part with a second rotor and a second housing and a push rod, which connects the first housing with the second housing with each other, wherein the push rod hollow is executed.
- the object is achieved by a method for operating a steam turbine, wherein the steam turbine comprises at least two sub-turbines, wherein each sub-turbine each having a housing and a rotor, wherein the housing via push rods are coupled together and the push rods are made hollow, wherein the cavity heating steam for thermal expansion of the push rod flows.
- the invention pursues the way to heat the push rod, thereby allowing thermal expansion of the push rod. With the linear expansion of the push rod you gain another parameter to position the housing and rotor parts optimally to each other.
- An essential idea of the invention is to use the hollow push rod with to apply a heating steam. This heating steam could be taken from the steam turbine at a suitable location.
- the heating of the push rod according to the invention is not unregulated, but depending on the position of the rotor.
- the Schudampfzu- or outflow should be positioned so that it is obstructed by the rotor, when the housing displacement corresponds approximately to the rotor displacement.
- the arrangement is formed with a supply steam channel and a supply source, which is designed to supply heating steam in the supply steam channel, wherein the cavity of the push rod is fluidically connected via the supply steam channel with the supply steam source.
- the supply steam source could, for example, be a steam from the process, such as the exhaust steam of a partial turbine. This steam is conducted via a supply steam channel into the cavity of the push rod and thus leads to a thermal expansion.
- the supply steam duct is arranged in the first and / or in the second housing.
- the supply steam channel has a heating steam outlet, wherein the heating steam outlet can be closed and opened with the first or second rotor.
- the supply steam channel may be considered in a first approximation as a bore with a heating steam outlet.
- this Schudampfauslass is covered by the rotor.
- the rotor may expand and thereby expose the bore, resulting in that the heating steam outlet is opened and thus a supply of the cavity of the push rod can be done with heating steam from the supply steam channel.
- the expansion of the push rod inevitably causes movement of the housing, which can be exploited to close the bore or the heating steam outlet again by means of a cover with the rotor.
- the FIG. 1 shows in a cross-sectional view of a steam turbine 1.
- the steam turbine includes a first turbine part 2a, a second turbine part 2b, a third turbine part 2c and a fourth turbine part 2d.
- the first sub-turbine 2 a is designed as a high-pressure turbine part and has a high-pressure steam inlet 3 and a high-pressure steam outlet 4.
- a live steam flows from the high pressure steam inlet 3 through a blading 5 to the high pressure steam outlet 4 the steam has flowed through the high-pressure turbine section, it is heated in a reheater (not shown) and fed to a medium-pressure steam inlet 6 of the second turbine section 2b, which is designed as a medium-pressure turbine section.
- the medium-pressure turbine section is double-flow.
- the steam flows via the medium-pressure steam inlet 6 through a medium-pressure blading 7 to a medium-pressure steam outlet 8. From there, the steam flows via an overflow line, not shown, to a low-pressure steam inlet 9 of the part turbines 2c and 2d designed as low-pressure turbine part. From there, the steam flows via respective low-pressure blading 10 to a low-pressure steam outlet 11 and from there to a capacitor, not shown.
- the second sub-turbine 2b comprises a rotor 12.
- Both the sub-turbine 2a and the sub-turbines 2c and 2d each include a rotor 13, wherein the rotors 12, 13 are coupled together by means of rigid couplings 14.
- a housing 15 is arranged to the rotor 12.
- the housing 15 is a first housing 15, the rotor 12 is a first rotor 12.
- the low-pressure part turbine 2 c comprises the rotor 13 (second rotor 13) and a second housing 16.
- the rotor 12, 13 expands, which can lead to an enlarged gap between the rotor 12, 13 and the housing 15.
- a push rod 17 is arranged between the first housing 15 and the second housing 16.
- the rotor 12, 13 In operation, the rotor 12, 13 usually rotates at 50 and 60 Hz and drives an electric generator 18, which in the FIG. 1 is shown only symbolically.
- the push rod 17 is hollow and thereby has a cavity in the FIG. 1 is not shown in detail.
- the FIG. 2 shows a side view of a part of the steam turbine 1 from FIG. 1 ,
- the first rotor 13 rotates about a rotation axis 19 and is arranged opposite to the first housing 15.
- the rotor 13 has a first radius R1 and a second radius R2, where R1> R2.
- the transition from the Radius R1 to radius R2 is essentially discontinuous and shows an edge 20 in the region of the transition.
- the first housing 15 has a supply steam channel 21, which in the in FIG. 2 shown operating state of the first rotor 13 is initially obscured.
- the supply steam channel 21 has a heating steam outlet 22, which is completely covered by the edge 20, so that no heating steam can flow.
- the heating steam can be removed, for example, from the process and could for example be the exhaust steam of the turbine part 2b.
- the rotor 13 has an annular end face 27.
- FIG. 3 shows one compared to FIG. 2 shown state a state during operation in a transient state.
- the difference to FIG. 2 lies in the fact that the rotor 13 thermally expands by applying process steam and indeed by the amount .DELTA.X shaft 23.
- the extent is such that the edge 20 now releases the Schudampfauslass 22 so that a heating steam from the supply steam channel 21 can flow out ,
- the state is off FIG. 2 shown by a dashed line 24.
- the heating steam flowing out of the supply steam duct 21 is fed to the push rod 17 and can be guided there into the cavity. As a result, the push rod 17 expands, with the result that the housing 15, 16 can be moved.
- FIG. 4 is exemplified how the movement of the housing 15 is carried out.
- the housing 15 is followed by the amount .DELTA.X housing 25 of the movement of the shaft.
- the condition of the housing is off FIG. 3 represented as a second dashed line 26 symbolically.
- the movement of the housing 15 over the thermally extended push rod 17 is in the in FIG. 4 shown state such that substantially the amount 23 is equal to the amount 25.
- .DELTA.X housing is approximately equal to .DELTA.X shaft .
- FIG. 4 can be seen, thereby the Schudampfauslass 22 closed again by the rotor 13 and the housing 15.
- no heating steam flows to the push rod 17 and the movement of the housing 15 is again avoided.
- FIG. 5 shows a further embodiment of the in the FIGS. 2, 3 and 4 shown section of the steam turbine 1.
- the difference of in FIG. 5 shown arrangement to the FIGS. 2, 3 and 4 is that the housing 15 is conical in the region of the edge 20 of the rotor 13, so that the rotor must also be made conical at the edge, so that a rubbing of the rotor 13 is avoided on the housing 15.
- the FIG. 5 merely shows an operating state in which the Schudampfauslass 22 is completely covered with the rotor 13, so that no heating steam can flow out of the supply steam passage 21.
- the supply steam channel 21 is connected to a supply steam source.
- the supply steam source is not shown in detail.
- the supply steam source can be, for example, an available process steam or, for example, an exhaust steam of a partial turbine.
- the transition at the edge 20 of the rotor 13 from the radius R1 to the radius R2 is discontinuous, so that an end face 27 is formed, which is substantially parallel to the radius R1 or R2.
- This end face 27 does not necessarily have to be parallel to the radius R1 or R2, but may be inclined at an angle, not shown, to the radius R1 or R2. It is important that the edge 20 can completely close the heating steam outlet 22.
Abstract
Die Erfindung betrifft eine Anordnung umfassend eine aus verschiedenen Teilturbinen (2a, 2b, 2c, 2d) bestehende Dampfturbine (1), wobei jede Teilturbine (2a, 2b, 2c, 2d) einen Rotor und ein Gehäuse (15, 16) aufweist, wobei im Betrieb durch thermische Ausdehnung des Rotors (12, 13) eine Bewegung des Gehäuses (15, 16) durch eine starre Kopplung der Gehäuse mittels einer Schubstange (17) gefolgt wird, wobei die Schubstange (17) hohl ausgeführt wird und durch eine Versorgung des Hohlraums mit einem Heizdampf eine thermische Ausdehnung möglich ist, wobei die Regelung des Zu- und Abflusses des Heizdampfes über die thermische Ausdehnung des Rotors (12, 13) erfolgt.The invention relates to an arrangement comprising a steam turbine (1) consisting of different sub-turbines (2a, 2b, 2c, 2d), each sub-turbine (2a, 2b, 2c, 2d) having a rotor and a housing (15, 16) in operation by thermal expansion of the rotor (12, 13), a movement of the housing (15, 16) is followed by a rigid coupling of the housing by means of a push rod (17), wherein the push rod (17) is hollow and by supplying the Cavity with a heating steam thermal expansion is possible, the control of the inflow and outflow of the heating steam on the thermal expansion of the rotor (12, 13) takes place.
Description
Die Erfindung betrifft eine Anordnung umfassend eine erste Teilturbine mit einem ersten Rotor und einem ersten Gehäuse, eine zweite Teilturbine mit einem zweiten Rotor und einem zweiten Gehäuse und eine Schubstange, die das erste Gehäuse mit dem zweiten Gehäuse miteinander verbindet.The invention relates to an arrangement comprising a first sub-turbine having a first rotor and a first housing, a second sub-turbine having a second rotor and a second housing, and a push rod connecting the first housing to the second housing.
Des Weiteren betrifft die Erfindung ein Verfahren zum Betreiben einer Dampfturbine, wobei die Dampfturbine mindestens zwei Teilturbinen umfasst, wobei jeweils eine Teilturbine ein Gehäuse und einen Rotor aufweist und die Gehäuse über Schubstangen miteinander gekoppelt sind.Furthermore, the invention relates to a method for operating a steam turbine, wherein the steam turbine comprises at least two sub-turbines, wherein in each case a sub-turbine has a housing and a rotor and the housing are coupled to each other via push rods.
Dampfturbinen weisen in der Regel mehrere Teilturbinen auf und sind für Dampfparameter ausgelegt, die bis zu 630°C bei einem Druck von 350 bar aufweisen. Solch hohe Dampfparameter stellen eine Herausforderung für die gesamte Dampfturbine dar. Thermische Ausdehnungseffekte führen dazu, dass Spiele vergrößert oder verkleinert werden zwischen dem Gehäuse und dem Rotor. Der Wellenstrang einer Dampfturbine kann sich im Betrieb thermisch stärker ausdehnen als die Gehäuse. Durch die Notwendigkeit solch einen axialen Versatz zuzulassen und durch die teilweise konische Form der Gehäuse ergeben sich höhere Spaltverluste. Daher werden die Gehäuseteile mittels Schubstangen miteinander gekoppelt. Das bedeutet, dass durch die starre Kopplung mit den Schubstangen eine Bewegung eines Gehäuses zu einer Bewegung des benachbarten Gehäuses führt, die über die Schubstange miteinander verbunden sind. Gemäß dem Stand der Technik behalten die Schubstangen ihre Länge bei, so dass der Rotor aufgrund seiner höheren Temperatur weiterhin einen axialen Versatz gegenüber dem Gehäuse erfährt.Steam turbines usually have several sub-turbines and are designed for steam parameters that have up to 630 ° C at a pressure of 350 bar. Such high steam parameters pose a challenge to the entire steam turbine. Thermal expansion effects cause games to be scaled up or down between the housing and the rotor. The shaft train of a steam turbine can thermally expand more during operation than the housing. Due to the need to allow such an axial offset and the partial conical shape of the housing results in higher gap losses. Therefore, the housing parts are coupled together by means of push rods. This means that the rigid coupling with the push rods, a movement of a housing leads to a movement of the adjacent housing, which are interconnected via the push rod. According to the prior art, the push rods maintain their length, so that the rotor continues to experience an axial offset relative to the housing due to its higher temperature.
Durch hydraulische Systeme könnte der axiale Versatz der Gehäuse an die Position der Wellen angepasst werden. Allerdings trägt solch ein aktiv gesteuertes System den Nachteil, dass im Falle eines Ausfalls des Systems ein Schaden an der Dampfturbine zu erwarten wäre, da die Spielreserve verringert wird, um die Spalte zu verkleinern.Hydraulic systems could adapt the axial offset of the housings to the position of the shafts. However, such an actively controlled system has the disadvantage that damage to the steam turbine would be expected in the event of a failure of the system, since the game reserve is reduced to reduce the gap.
Aus der
Durch eine Reduktion des axialen Versatzes könnte eine Zunahme des inneren Turbinenwirkungsgrades erreicht werden.By reducing the axial offset, an increase in internal turbine efficiency could be achieved.
Aufgabe der Erfindung ist es daher, den Dampfturbinenwirkungsgrad zu erhöhen.The object of the invention is therefore to increase the steam turbine efficiency.
Gelöst wird diese Aufgabe durch eine Anordnung umfassend eine erste Teilturbine mit einem ersten Rotor und einem ersten Gehäuse, eine zweite Teilturbine mit einem zweiten Rotor und einem zweiten Gehäuse und eine Schubstange, die das erste Gehäuse mit dem zweiten Gehäuse miteinander verbindet, wobei die Schubstange hohl ausgeführt ist.This object is achieved by an arrangement comprising a first turbine part with a first rotor and a first housing, a second turbine part with a second rotor and a second housing and a push rod, which connects the first housing with the second housing with each other, wherein the push rod hollow is executed.
Des Weiteren wird die Aufgabe gelöst durch ein Verfahren zum Betreiben einer Dampfturbine, wobei die Dampfturbine mindestens zwei Teilturbinen umfasst, wobei jede Teilturbine jeweils ein Gehäuse und einen Rotor aufweist, wobei die Gehäuse über Schubstangen miteinander gekoppelt werden und die Schubstangen hohl ausgeführt werden, wobei in den Hohlraum Heizdampf zum thermischen Ausdehnen der Schubstange einströmt.Furthermore, the object is achieved by a method for operating a steam turbine, wherein the steam turbine comprises at least two sub-turbines, wherein each sub-turbine each having a housing and a rotor, wherein the housing via push rods are coupled together and the push rods are made hollow, wherein the cavity heating steam for thermal expansion of the push rod flows.
Die Erfindung verfolgt den Weg, die Schubstange zu beheizen, um dadurch eine thermische Ausdehnung der Schubstange zu ermöglichen. Mit der Längenausdehnung der Schubstange gewinnt man einen weiteren Parameter, um die Gehäuse- und Rotorteile optimal zueinander zu positionieren. Ein wesentlicher Gedanke der Erfindung ist es, die hohl ausgeführte Schubstange mit einem Heizdampf zu beaufschlagen. Dieser Heizdampf könnte an einer geeigneten Stelle aus der Dampfturbine entnommen werden.The invention pursues the way to heat the push rod, thereby allowing thermal expansion of the push rod. With the linear expansion of the push rod you gain another parameter to position the housing and rotor parts optimally to each other. An essential idea of the invention is to use the hollow push rod with to apply a heating steam. This heating steam could be taken from the steam turbine at a suitable location.
Die Erwärmung der Schubstange erfolgt erfindungsgemäß nicht ungeregelt, sondern abhängig von der Position des Läufers. Der Heizdampfzu- oder -abfluss sollte so positioniert sein, dass dieser durch den Rotor behindert wird, wenn die Gehäuseverschiebung in etwa der Rotorverschiebung entspricht.The heating of the push rod according to the invention is not unregulated, but depending on the position of the rotor. The Heizdampfzu- or outflow should be positioned so that it is obstructed by the rotor, when the housing displacement corresponds approximately to the rotor displacement.
Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.Advantageous developments are specified in the subclaims.
In einer ersten vorteilhaften Weiterbildung ist die Anordnung mit einem Versorgungsdampfkanal und einer Versorgungsquelle, die zum Versorgen von Heizdampf im Versorgungsdampfkanal ausgebildet ist, ausgebildet, wobei der Hohlraum der Schubstange strömungstechnisch über den Versorgungsdampfkanal mit der Versorgungsdampfquelle verbunden ist.In a first advantageous embodiment, the arrangement is formed with a supply steam channel and a supply source, which is designed to supply heating steam in the supply steam channel, wherein the cavity of the push rod is fluidically connected via the supply steam channel with the supply steam source.
Die Versorgungsdampfquelle könnte beispielsweise ein Dampf aus dem Prozess sein, wie zum Beispiel der Abdampf einer Teilturbine. Dieser Dampf wird über einen Versorgungsdampfkanal in den Hohlraum der Schubstange geführt und führt somit zu einer thermischen Ausdehnung.The supply steam source could, for example, be a steam from the process, such as the exhaust steam of a partial turbine. This steam is conducted via a supply steam channel into the cavity of the push rod and thus leads to a thermal expansion.
Vorteilhafterweise ist der Versorgungsdampfkanal im ersten und/oder im zweiten Gehäuse angeordnet.Advantageously, the supply steam duct is arranged in the first and / or in the second housing.
In einer besonders vorteilhaften Weiterbildung weist der Versorgungsdampfkanal einen Heizdampfauslass auf, wobei der Heizdampfauslass mit dem ersten oder zweiten Rotor geschlossen und geöffnet werden kann. Der Versorgungsdampfkanal kann in einer ersten Näherung als eine Bohrung mit einem Heizdampfauslass betrachtet werden. Erfindungsgemäß wird dieser Heizdampfauslass durch den Rotor verdeckt. Bei einer Inbetriebnahme der Dampfturbine kann der Rotor sich ausdehnen und dadurch die Bohrung freilegen, was dazu führt, dass der Heizdampfauslass geöffnet wird und somit eine Versorgung des Hohlraums der Schubstange mit Heizdampf aus dem Versorgungsdampfkanal erfolgen kann. Durch das Ausdehnen der Schubstange erfolgt zwangsläufig eine Bewegung des Gehäuses, was dazu ausgenutzt werden kann, die Bohrung bzw. den Heizdampfauslass durch eine Abdeckung mit dem Rotor wieder zu schließen.In a particularly advantageous development, the supply steam channel has a heating steam outlet, wherein the heating steam outlet can be closed and opened with the first or second rotor. The supply steam channel may be considered in a first approximation as a bore with a heating steam outlet. According to the invention this Heizdampfauslass is covered by the rotor. Upon start-up of the steam turbine, the rotor may expand and thereby expose the bore, resulting in that the heating steam outlet is opened and thus a supply of the cavity of the push rod can be done with heating steam from the supply steam channel. The expansion of the push rod inevitably causes movement of the housing, which can be exploited to close the bore or the heating steam outlet again by means of a cover with the rotor.
Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung der Ausführungsbeispiele, die im Zusammenhang mit den Zeichnungen näher erläutert werden.The above-described characteristics, features, and advantages of this invention, as well as the manner in which they will be achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in detail in conjunction with the drawings.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen beschrieben. Diese soll die Ausführungsbeispiele nicht maßgeblich darstellen, vielmehr ist die Zeichnung, wo zur Erläuterung dienlich, in schematisierter und/oder leicht verzerrter Form ausgeführt. Im Hinblick auf Ergänzungen der in der Zeichnung unmittelbar erkennbaren Lehren wird auf den einschlägigen Stand der Technik verwiesen.Embodiments of the invention will be described below with reference to the drawings. This is not intended to represent the embodiments significantly, but the drawing, where appropriate for explanation, executed in a schematized and / or slightly distorted form. With regard to additions to the teachings directly recognizable in the drawing reference is made to the relevant prior art.
Es zeigen:
- Figur 1
- eine Querschnittansicht einer Dampfturbine,
- Figur 2
- eine Seitenansicht der erfindungsgemäßen Anordnung,
- Figur 3
- eine Seitenansicht der erfindungsgemäßen Anordnung,
Figur 4- eine Seitenansicht der erfindungsgemäßen Anordnung,
Figur 5- eine Seitenansicht der erfindungsgemäßen Anordnung.
- FIG. 1
- a cross-sectional view of a steam turbine,
- FIG. 2
- a side view of the arrangement according to the invention,
- FIG. 3
- a side view of the arrangement according to the invention,
- FIG. 4
- a side view of the arrangement according to the invention,
- FIG. 5
- a side view of the arrangement according to the invention.
Die
Die zweite Teilturbine 2b umfasst einen Rotor 12. Sowohl die Teilturbine 2a als auch die Teilturbinen 2c und 2d umfassen jeweils einen Rotor 13, wobei die Rotoren 12, 13 mittels starrer Kupplungen 14 miteinander gekoppelt sind. Um den Rotor 12 ist ein Gehäuse 15 angeordnet. Das Gehäuse 15 ist ein erstes Gehäuse 15, der Rotor 12 ist ein erster Rotor 12. Die Niederdruck-Teilturbine 2c umfasst den Rotor 13 (zweiter Rotor 13) und ein zweites Gehäuse 16 auf. Im Betrieb dehnt sich der Rotor 12, 13 aus, was zu einem vergrößerten Spalt zwischen dem Rotor 12, 13 und dem Gehäuse 15 führen kann. Um den Spalt zu verringern, ist zwischen dem ersten Gehäuse 15 und dem zweiten Gehäuse 16 eine Schubstange 17 angeordnet.The
Im Betrieb dreht sich der Rotor 12, 13 in der Regel mit 50 bzw. 60 Hz und treibt einen elektrischen Generator 18 an, der in der
Die
Die
Der aus dem Versorgungsdampfkanal 21 ausströmende Heizdampf wird der Schubstange 17 zugeführt und kann dort in den Hohlraum geführt werden. Dadurch dehnt sich die Schubstange 17 aus mit der Folge, dass das Gehäuse 15, 16 bewegt werden kann.The heating steam flowing out of the
In der
Die
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschreiben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.Although the invention has been illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
Claims (14)
eine erste Teilturbine (2a) mit einem ersten Rotor (13) und einem ersten Gehäuse (15),
eine zweite Teilturbine (2b) mit einem zweiten Rotor (12) und einem zweiten Gehäuse (16) und
eine Schubstange (17), die das erste Gehäuse (15) mit dem zweiten Gehäuse (16) miteinander verbindet,
dadurch gekennzeichnet, dass
die Schubstange (17) hohl ausgeführt ist.Arrangement comprising
a first sub-turbine (2a) having a first rotor (13) and a first housing (15),
a second turbine part (2b) with a second rotor (12) and a second housing (16) and
a push rod (17) interconnecting the first housing (15) with the second housing (16),
characterized in that
the push rod (17) is hollow.
mit einem Versorgungsdampfkanal (21) und einer Versorgungsdampfquelle,
die zum Versorgen von Heizdampf im Versorgungsdampfkanal (21) ausgebildet ist,
wobei der Hohlraum der Schubstangen (17) strömungstechnisch über den Versorgungsdampfkanal (21) mit der Versorgungsdampfquelle verbunden ist.Arrangement according to claim 1,
with a supply steam channel (21) and a supply steam source,
which is designed to supply heating steam in the supply steam channel (21),
wherein the cavity of the push rods (17) is fluidically connected via the supply steam channel (21) with the supply steam source.
wobei der Versorgungsdampfkanal (21) im ersten (15) und/oder im zweiten Gehäuse (16) angeordnet ist.Arrangement according to claim 2,
wherein the supply steam channel (21) in the first (15) and / or in the second housing (16) is arranged.
wobei der Versorgungsdampfkanal (21) einen Heizdampfauslass (22) aufweist,
wobei der Heizdampfauslass (22) mit dem ersten (12) oder zweiten Rotor (13) geschlossen und geöffnet werden kann.Arrangement according to claim 2 or 3,
wherein the supply steam channel (21) has a heating steam outlet (22),
wherein the heating steam outlet (22) can be closed and opened with the first (12) or second rotor (13).
wobei das Schließen und Öffnen des Heizdampfauslasses (22) über eine thermische Ausdehnung des ersten (12) oder zweiten (13) Rotors erfolgt.Arrangement according to claim 4,
wherein the closing and opening of the Heizdampfauslasses (22) via a thermal expansion of the first (12) or second (13) rotor takes place.
wobei der Heizdampfauslass (22) mit dem ersten (15) oder zweiten Gehäuse (16) geschlossen und geöffnet werden kann.Arrangement according to claim 4 or 5,
wherein the heating steam outlet (22) can be closed and opened with the first (15) or second housing (16).
wobei das Schließen und Öffnen des Heizdampfauslasses (22) über eine thermische Ausdehnung des ersten (15) oder zweiten Gehäuses (16) und/oder einer thermischen Ausdehnung der Schubstange (17) erfolgt.Arrangement according to claim 6,
wherein the closing and opening of the Heizdampfauslasses (22) via a thermal expansion of the first (15) or second housing (16) and / or a thermal expansion of the push rod (17).
wobei der erste (12) und/oder zweite Rotor (13) einen ersten Bereich mit einem ersten Radius (R1) und einen zweiten Bereich mit einem Radius (R2) aufweist und der erste Bereich den Heizdampfauslass (22) verschließt und der zweite Bereich den Heizdampfauslass (22) öffnet, wobei gilt R1 > R2.Arrangement according to one of claims 4 to 7,
wherein the first (12) and / or second rotor (13) has a first region with a first radius (R 1 ) and a second region with a radius (R 2 ) and the first region closes the heating steam outlet (22) and the second region Area the Heizdampfauslass (22) opens, where R1> R 2 applies.
wobei das erste (15) und/oder zweite Gehäuse (16) im Bereich des Heizdampfauslasses (22) konusförmig ausgebildet ist.Arrangement according to one of claims 4 to 8,
wherein the first (15) and / or second housing (16) in the region of the Heizdampfauslasses (22) is cone-shaped.
wobei der erste (12) und/oder zweite Rotor (13) im Bereich des Heizdampfauslasses (22) konusförmig ausgebildet ist.Arrangement according to claim 9;
wherein the first (12) and / or second rotor (13) in the region of the Heizdampfauslasses (22) is conical.
wobei die Dampfturbine (1) mindestens zwei Teilturbinen (2a, 2b, 2c, 2d) umfasst,
wobei jeweils eine Teilturbine (2a, 2b, 2c, 2d) ein Gehäuse (15, 16) und einen Rotor (12, 13) aufweist wobei die Gehäuse (15, 16) über Schubstangen (17) miteinander gekoppelt werden und die Schubstangen (17) hohl ausgeführt werden,
wobei in den Hohlraum Heizdampf zum thermischen Ausdehnen der Schubstangen (17) einströmt.Method for operating a steam turbine (1),
the steam turbine (1) comprising at least two sub-turbines (2a, 2b, 2c, 2d),
wherein a respective sub-turbine (2a, 2b, 2c, 2d) has a housing (15, 16) and a rotor (12, 13), wherein the housings (15, 16) are coupled to one another via push rods (17) and the push rods (17 ) are hollow,
wherein heating steam for thermal expansion of the push rods (17) flows into the cavity.
wobei Heizdampf aus einem Versorgungsdampfkanal (21) im Gehäuse (15, 16) strömt,
wobei der Rotor (12, 13) die Strömung des Heizdampfes schließen und öffnen kann.Method according to claim 11,
wherein heating steam flows from a supply steam duct (21) in the housing (15, 16),
wherein the rotor (12, 13) can close and open the flow of heating steam.
wobei das Schließen und Öffnen über eine thermische Ausdehnung erfolgt.Method according to claim 12,
wherein the closing and opening takes place via a thermal expansion.
wobei der Versorgungsdampfkanal (21) über eine Bewegung des Gehäuses (15, 16) geschlossen werden kann.Method according to one of claims 11 to 13,
wherein the supply steam channel (21) via a movement of the housing (15, 16) can be closed.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14156366.8A EP2910741A1 (en) | 2014-02-24 | 2014-02-24 | Heatable push rod for a steam turbine |
PCT/EP2015/050630 WO2015124333A1 (en) | 2014-02-24 | 2015-01-15 | Heatable push rod for a steam turbine |
CN201580010261.4A CN106030048B (en) | 2014-02-24 | 2015-01-15 | Heatable push rod for steam turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14156366.8A EP2910741A1 (en) | 2014-02-24 | 2014-02-24 | Heatable push rod for a steam turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2910741A1 true EP2910741A1 (en) | 2015-08-26 |
Family
ID=50190213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14156366.8A Withdrawn EP2910741A1 (en) | 2014-02-24 | 2014-02-24 | Heatable push rod for a steam turbine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2910741A1 (en) |
CN (1) | CN106030048B (en) |
WO (1) | WO2015124333A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1216322B (en) * | 1962-05-30 | 1966-05-12 | Creusot Forges Ateliers | Steam or gas turbine with several turbine sections arranged coaxially one behind the other |
GB1145612A (en) * | 1966-04-12 | 1969-03-19 | Licentia Gmbh | Improvements relating to steam turbines |
US6092986A (en) * | 1996-07-24 | 2000-07-25 | Siemens Aktiengesellschaft | Turbine plant having a thrust element, and thrust element |
EP2554801A1 (en) | 2011-08-02 | 2013-02-06 | Siemens Aktiengesellschaft | A turbine system comprising a push rod arrangement between two housings |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB995473A (en) * | 1962-05-30 | 1965-06-16 | Rateau Soc | Turbine with double-casing low-pressure cylinder |
DE19629933C1 (en) * | 1996-07-24 | 1997-09-04 | Siemens Ag | Steam-turbine plant e.g. with two inner low-pressure (ND) housings |
US20100054911A1 (en) * | 2008-08-29 | 2010-03-04 | General Electric Company | System and method for adjusting clearance in a gas turbine |
-
2014
- 2014-02-24 EP EP14156366.8A patent/EP2910741A1/en not_active Withdrawn
-
2015
- 2015-01-15 WO PCT/EP2015/050630 patent/WO2015124333A1/en active Application Filing
- 2015-01-15 CN CN201580010261.4A patent/CN106030048B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1216322B (en) * | 1962-05-30 | 1966-05-12 | Creusot Forges Ateliers | Steam or gas turbine with several turbine sections arranged coaxially one behind the other |
GB1145612A (en) * | 1966-04-12 | 1969-03-19 | Licentia Gmbh | Improvements relating to steam turbines |
US6092986A (en) * | 1996-07-24 | 2000-07-25 | Siemens Aktiengesellschaft | Turbine plant having a thrust element, and thrust element |
EP2554801A1 (en) | 2011-08-02 | 2013-02-06 | Siemens Aktiengesellschaft | A turbine system comprising a push rod arrangement between two housings |
Also Published As
Publication number | Publication date |
---|---|
CN106030048B (en) | 2018-09-07 |
CN106030048A (en) | 2016-10-12 |
WO2015124333A1 (en) | 2015-08-27 |
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