EP2802748A1 - Screw cooling for a fluid flow machine - Google Patents

Screw cooling for a fluid flow machine

Info

Publication number
EP2802748A1
EP2802748A1 EP13713767.5A EP13713767A EP2802748A1 EP 2802748 A1 EP2802748 A1 EP 2802748A1 EP 13713767 A EP13713767 A EP 13713767A EP 2802748 A1 EP2802748 A1 EP 2802748A1
Authority
EP
European Patent Office
Prior art keywords
housing
cooling channel
cooling
screw
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13713767.5A
Other languages
German (de)
French (fr)
Other versions
EP2802748B1 (en
Inventor
Eduard Jenikejew
Yevgen Kostenko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP13713767.5A priority Critical patent/EP2802748B1/en
Publication of EP2802748A1 publication Critical patent/EP2802748A1/en
Application granted granted Critical
Publication of EP2802748B1 publication Critical patent/EP2802748B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/14—Casings modified therefor
    • F01D25/145—Thermally insulated casings
    • 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
    • F01D25/243—Flange connections; Bolting arrangements
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2260/20—Heat transfer, e.g. cooling
    • 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
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Definitions

  • the invention relates to a turbomachine comprising a housing comprising an upper housing part, a lower housing part and a flow channel arranged in the housing, wherein the Strö ⁇ flow channel has a Strömungskanalabdampf syndromem, wherein the housing part via screws ver ⁇ bindable to the lower housing part, wherein the screw is designed as a stud and a cooling channel formed along the axial direction of the stud, the cooling passage having a cooling passage inlet and a cooling passage outlet.
  • steam turbines In steam power plants, steam turbines are used, which apply an electrical output of up to 1,600 megawatts Kings ⁇ nen. For thermodynamic reasons, a steam turbine is divided into so-called sub-turbines, which have a common shaft.
  • the high-pressure turbine part comprises a réellege ⁇ housing, which consists of an upper part and a lower part and is held together by means of screw connections. Due to the high temperatures and the temporal behavior of the temperature change, time- and temperature-dependent relaxations occur. As a result, it is possible that the tension of the housing and thus the tightness during operation diminishes, which can lead to leakage and is accompanied by a loss of efficiency.
  • a turbomachine umfas ⁇ send a housing of an upper housing part, a housing ⁇ lower part and, disposed in the housing flow channel, said flow channel having a Strömungskanalabdampf syndromem, wherein the upper housing part by means of screws with the Ge ⁇ koruseunterteil is connectable, said screw is designed as a pin ⁇ screw and has a trained along the axial direction of the stud screw cooling channel where ⁇ at the cooling channel has a cooling duct inlet and adekanal- outlet, wherein the cooling duct inlet is Strömungstech ⁇ nisch connected to the flow channel, thedekanalauslass aerodynamically is connected to the Strömungskanalab ⁇ steam room.
  • the invention proposes to use a known cooling hole in the stud bolts used for the screw, which is supplied on the one hand with a vapor located in the flow channel and on the other hand ⁇ connected via adekanalauslass with the Strömungskanalab ⁇ steam room.
  • the steam from the flow channel has a higher pressure than the steam in Strömungskanalabdampfhoffm so that a forced flow through the cooling channel in the stud has resulted, resulting in a kuh ⁇ ment of the screw as a whole.
  • the stud bolt comprises a nut, wherein the nut comprises cooling channel slots, which fluidly connects the cooling passage with the flow channel evaporation chamber.
  • the lower housing part has a bore which connects the cooling channel inlet with the Strö mungskanal.
  • This bore can be performed in an axial direction of the upper and lower housing upper part. It is important that at a suitable location, the bore has a flow ⁇ technical connection that provides the appropriate steam for the cooling steam.
  • FIG. 2 upper housing part FIG. 3 lower housing part
  • FIG. 4 shows a plan view of a nut according to the invention
  • Figure 5 is a schematic side view of the housing upper ⁇ part and the lower housing part.
  • FIG. 1 shows a schematic view of a partial view ei Nes housing upper part 1 and a lower housing part 2.
  • the Ge housing upper part 1 and the lower housing part 2 together a housing which is used in a turbomachine, not shown.
  • a flow channel is angeord ⁇ net (not shown).
  • blades and vanes are arranged, which convert the thermal energy Ener ⁇ a vapor into rotational energy of a rotor.
  • the upper housing part 1 and the lower housing part 2 are connected to one another via screws 3.
  • the screw 3 is designed as a stud, which means that the screw has by no 3 nen screw head, but a Ge ⁇ threaded at both ends.
  • a cooling channel 4 is formed, which is connected to a cooling channel inlet 5 and a cooling channel outlet 6 on the one hand.
  • a steam flowing in the cooling channel inlet 5 will flow through the cooling channel 4 in the axial direction through the stud bolt and thereby cool the stud.
  • the cooling steam enters the cooling channel outlet 6.
  • a slot 8 is arranged in the nut 7, through which the steam can flow into the cooling channel outlet 6.
  • Thedekanalauslass 6 is fluidly connected via a first fluid ⁇ technical connection 9 with the Strömungskanalabdampf syndromem (not shown in detail).
  • Thedekanalauslass 6 is fluidically connected via a between the stud and the housing, in particular hous ⁇ seoberteil 1 arranged screw cooling channel 14 with the flow channel evacuation chamber.
  • the channel inlet is connected to the flow channel via a second fluidic connection 10, expediently a fluidic connection after a blade stage is realized, in which the steam parameters are ideal for adeka ⁇ nalnikank.
  • FIG. 3 shows the housing lower part 2 with the second fluidic connection 10 and the cooling channel inlet 5.
  • FIG. 4 shows the nut 7 of the screw 3.
  • the nut 7 has at least one slot 8 in the region of the thread 11, through which the cooling steam can flow.
  • FIG. 5 shows a side view in the axial direction 12 of the turbomachine. The arrangement of the flow channel 13 as well as the cooling channel inlet 5 and the cooling channel outlet 6 and the first fluidic connection 9 and the second fluidic connection 10 can be seen in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The invention relates to a fluid flow machine comprising a housing composed of a housing upper part (1) and a housing lower part (2), wherein the housing upper part (1) is connected to the housing lower part (2) via a pin screw (3) and has a cooling duct (4) which is connected, on the one hand, to the flow duct (13) with a vapour at a relative high pressure and, on the other hand, to a cooling duct outlet (6) which is connected to the exhaust steam space.

Description

Beschreibung description
Schraubenkühlung für eine Strömungsmaschine Screw cooling for a turbomachine
Die Erfindung betrifft eine Strömungsmaschine umfassend ein Gehäuse aus einem Gehäuseoberteil, einem Gehäuseunterteil und einem im Gehäuse angeordneten Strömungskanal, wobei der Strö¬ mungskanal einen Strömungskanalabdampfräum aufweist, wobei das Gehäuseteil über Schrauben mit dem Gehäuseunterteil ver¬ bindbar ist, wobei die Schraube als Stiftschraube ausgebildet ist und einen entlang der axialen Richtung der Stiftschraube ausgebildeten Kühlkanal aufweist, wobei der Kühlkanal einen Kühlkanaleinlass und einen Kühlkanalauslass aufweist. The invention relates to a turbomachine comprising a housing comprising an upper housing part, a lower housing part and a flow channel arranged in the housing, wherein the Strö ¬ flow channel has a Strömungskanalabdampfräum, wherein the housing part via screws ver ¬ bindable to the lower housing part, wherein the screw is designed as a stud and a cooling channel formed along the axial direction of the stud, the cooling passage having a cooling passage inlet and a cooling passage outlet.
In Dampfkraftwerken werden Dampfturbinen eingesetzt, die eine elektrische Leistung von bis zu 1600 Megawatt aufbringen kön¬ nen. Aus thermodynamischen Gründen wird eine Dampfturbine in sogenannte Teilturbinen aufgeteilt, die eine gemeinsame Welle aufweisen. In steam power plants, steam turbines are used, which apply an electrical output of up to 1,600 megawatts Kings ¬ nen. For thermodynamic reasons, a steam turbine is divided into so-called sub-turbines, which have a common shaft.
In der Regel umfasst die Hochdruck-Teilturbine ein Innenge¬ häuse, das aus einem Oberteil und aus einem Unterteil besteht und mittels Schraubenverbindungen zusammengehalten ist. In- folge der hohen Temperaturen und des zeitlichen Verhalten der Temperaturänderung entstehen zeit- und temperaturabhängige Relaxationen. Dadurch kann es sein, dass die Verspannung des Gehäuses und somit die Dichtheit während des Betriebs nach- lässt, was zu einer Leckage führen kann und mit einem Wir- kungsgradverlust einhergeht. In general, the high-pressure turbine part comprises a Innenge ¬ housing, which consists of an upper part and a lower part and is held together by means of screw connections. Due to the high temperatures and the temporal behavior of the temperature change, time- and temperature-dependent relaxations occur. As a result, it is possible that the tension of the housing and thus the tightness during operation diminishes, which can lead to leakage and is accompanied by a loss of efficiency.
Wünschenswert wäre es daher, eine möglichst für alle Dampf¬ parameter stabile Verspannung zu haben. Dies kann durch ein verbessertes Design oder durch bessere, allerdings teurere Schraubenwerkstoffe ermöglicht werden. Es ist daher Aufgabe der Erfindung, eine verbesserte Ver- schraubung anzugeben, die bei verschiedenen Dampfparametern eine gute Verspannung aufweist. Desirable it would be to have as stable as possible for all steam parameters ¬ tension. This can be made possible by an improved design or better, but more expensive screw materials. It is therefore an object of the invention to provide an improved screw connection, which has good tension at different steam parameters.
Gelöst wird diese Aufgabe durch eine Strömungsmaschine umfas¬ send ein Gehäuse aus einem Gehäuseoberteil, einem Gehäuse¬ unterteil und einem im Gehäuse angeordneten Strömungskanal, wobei der Strömungskanal einen Strömungskanalabdampfräum aufweist, wobei das Gehäuseoberteil über Schrauben mit dem Ge¬ häuseunterteil verbindbar ist, wobei die Schraube als Stift¬ schraube ausgebildet ist und einen entlang der axialen Richtung der Stiftschraube ausgebildeten Kühlkanal aufweist, wo¬ bei der Kühlkanal einen Kühlkanaleinlass und einen Kühlkanal- auslass aufweist, wobei der Kühlkanaleinlass strömungstech¬ nisch mit dem Strömungskanal verbunden ist, wobei der Kühl- kanalauslass strömungstechnisch mit dem Strömungskanalab¬ dampfräum verbunden ist. This object is achieved by a turbomachine umfas ¬ send a housing of an upper housing part, a housing ¬ lower part and, disposed in the housing flow channel, said flow channel having a Strömungskanalabdampfräum, wherein the upper housing part by means of screws with the Ge ¬ häuseunterteil is connectable, said screw is designed as a pin ¬ screw and has a trained along the axial direction of the stud screw cooling channel where ¬ at the cooling channel has a cooling duct inlet and a Kühlkanal- outlet, wherein the cooling duct inlet is Strömungstech ¬ nisch connected to the flow channel, the Kühlkanalauslass aerodynamically is connected to the Strömungskanalab ¬ steam room.
Somit wird erfindungsgemäß vorgeschlagen, bei den für die Verschraubung verwendeten Stiftschrauben eine an sich bekannte Kühlbohrung zu verwenden, die einerseits mit einem im Strömungskanal befindlichen Dampf versorgt wird und anderer¬ seits über einen Kühlkanalauslass mit dem Strömungskanalab¬ dampfräum verbunden ist. Der Dampf aus dem Strömungskanal weist einen höheren Druck auf als der Dampf im Strömungskanalabdampfräum, so dass eine Zwangsströmung durch den Kühlkanal in der Stiftschraube zur Folge hat, was zu einer Küh¬ lung der Schraube insgesamt führt. Thus, the invention proposes to use a known cooling hole in the stud bolts used for the screw, which is supplied on the one hand with a vapor located in the flow channel and on the other hand ¬ connected via a Kühlkanalauslass with the Strömungskanalab ¬ steam room. The steam from the flow channel has a higher pressure than the steam in Strömungskanalabdampfräum so that a forced flow through the cooling channel in the stud has resulted, resulting in a Küh ¬ ment of the screw as a whole.
Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben . Advantageous developments are specified in the subclaims.
So umfasst in einer ersten vorteilhaften Weiterbildung die Stiftschraube eine Mutter, wobei die Mutter Kühlkanalschlitze umfasst, die den Kühlkanal mit dem Strömungskanalabdampfräum strömungstechnisch verbindet. Somit wird also vorgeschlagen, in die Mutter Schlitze einzu¬ arbeiten, die den durch den Kühlkanal in die Schraube strö¬ menden Kühldampf umlenkt und zu dem Strömungskanalauslass , der mit dem Strömungskanalabdampfräum verbunden ist, verbindet. Dadurch kann an sich kein Kühldampf austreten, was zu einer Verbesserung der Dichtheit führt. Thus, in a first advantageous development, the stud bolt comprises a nut, wherein the nut comprises cooling channel slots, which fluidly connects the cooling passage with the flow channel evaporation chamber. Thus, it is therefore proposed to work in the nut slots ¬ , which deflects the flowing through the cooling passage in the screw ¬ ing cooling steam and to the flow channel outlet, which is connected to the Strömungskanalabdampfräum connects. As a result, no cooling steam can escape, which leads to an improvement in the tightness.
In einer vorteilhaften Weiterbildung weist das Gehäuseunterteil eine Bohrung auf, die den Kühlkanaleinlass mit dem Strö mungskanal verbindet. In an advantageous embodiment, the lower housing part has a bore which connects the cooling channel inlet with the Strö mungskanal.
Diese Bohrung kann in einer axialen Richtung des Gehäuseober teils und -Unterteils ausgeführt werden. Wichtig ist dabei, dass an einer geeigneten Stelle die Bohrung eine strömungs¬ technische Verbindung aufweist, die den geeigneten Dampf für den Kühldampf liefert. This bore can be performed in an axial direction of the upper and lower housing upper part. It is important that at a suitable location, the bore has a flow ¬ technical connection that provides the appropriate steam for the cooling steam.
Die Erfindung wird anhand eines Ausführungsbeispiels nun nä¬ her erläutert. The invention will now be explained nä ¬ forth using an exemplary embodiment.
Es zeigen Show it
Figur 1 einen Teilausschnitt einer erfindungsgemäßen Ver- schraubung, 1 shows a partial section of a screw connection according to the invention,
Figur 2 Gehäuseoberteil, Figur 3 Gehäuseunterteil, FIG. 2 upper housing part, FIG. 3 lower housing part,
Figur 4 eine Aufsicht auf eine erfindungsgemäße Mutter, FIG. 4 shows a plan view of a nut according to the invention,
Figur 5 eine schematische Seitenansicht des Gehäuseober¬ teils und des Gehäuseunterteils. Figure 5 is a schematic side view of the housing upper ¬ part and the lower housing part.
Die Figur 1 zeigt in schematischer Weise eine Teilansicht ei nes Gehäuseoberteils 1 und eines Gehäuseunterteils 2. Das Ge häuseoberteil 1 und das Gehäuseunterteil 2 bilden gemeinsam ein Gehäuse, das in einer nicht näher dargestellten Strömungsmaschine zum Einsatz kommt. Zwischen dem Gehäuseoberteil 1 und dem Gehäuseunterteil 2 ist ein Strömungskanal angeord¬ net (nicht näher dargestellt) . In diesem Strömungskanal sind Lauf- und Leitschaufeln angeordnet, die die thermische Ener¬ gie eines Dampfes in Rotationsenergie eines Rotors umwandeln. Das Gehäuseoberteil 1 und das Gehäuseunterteil 2 werden über Schrauben 3 miteinander verbunden. Dazu ist die Schraube 3 als Stiftschraube ausgebildet, d. h. dass die Schraube 3 kei- nen Schraubenkopf aufweist, sondern an beiden Enden ein Ge¬ winde. Entlang der axialen Richtung der Stiftschraube ist ein Kühlkanal 4 ausgebildet, der zum einen mit einem Kühl- kanaleinlass 5 und einem Kühlkanalauslass 6 verbunden ist. Somit wird ein im Kühlkanaleinlass 5 einströmender Dampf durch den Kühlkanal 4 in axialer Richtung durch die Stiftschraube strömen und dabei die Stiftschraube abkühlen. 1 shows a schematic view of a partial view ei Nes housing upper part 1 and a lower housing part 2. The Ge housing upper part 1 and the lower housing part 2 together a housing which is used in a turbomachine, not shown. Between the upper housing part 1 and the lower housing part 2, a flow channel is angeord ¬ net (not shown). In this flow channel blades and vanes are arranged, which convert the thermal energy Ener ¬ a vapor into rotational energy of a rotor. The upper housing part 1 and the lower housing part 2 are connected to one another via screws 3. For this purpose, the screw 3 is designed as a stud, which means that the screw has by no 3 nen screw head, but a Ge ¬ threaded at both ends. Along the axial direction of the stud, a cooling channel 4 is formed, which is connected to a cooling channel inlet 5 and a cooling channel outlet 6 on the one hand. Thus, a steam flowing in the cooling channel inlet 5 will flow through the cooling channel 4 in the axial direction through the stud bolt and thereby cool the stud.
Schließlich gelangt der Kühldampf in den Kühlkanalauslass 6. Damit der Kühldampf aus dem Kühlkanal 4 in den Kühlkanalaus¬ lass 6 strömen kann, ist in der Mutter 7 ein Schlitz 8 angeordnet, durch den der Dampf in den Kühlkanalauslass 6 strömen kann. Der Kühlkanalauslass 6 ist über eine erste strömungs¬ technische Verbindung 9 mit dem Strömungskanalabdampfräum (nicht näher dargestellt) strömungstechnisch verbunden. Finally, the cooling steam enters the cooling channel outlet 6. In order for the cooling steam to flow from the cooling channel 4 into the cooling channel outlet 6, a slot 8 is arranged in the nut 7, through which the steam can flow into the cooling channel outlet 6. The Kühlkanalauslass 6 is fluidly connected via a first fluid ¬ technical connection 9 with the Strömungskanalabdampfräum (not shown in detail).
Der Kühlkanalauslass 6 ist strömungstechnisch über einen zwischen der Stiftschraube und dem Gehäuse, insbesondere Gehäu¬ seoberteil 1 angeordneten Schraubenkühlkanal 14 mit dem Strö- mungskanalabdampfräum verbunden. The Kühlkanalauslass 6 is fluidically connected via a between the stud and the housing, in particular hous ¬ seoberteil 1 arranged screw cooling channel 14 with the flow channel evacuation chamber.
In ähnlicher Weise ist, wie in Figur 3 dargestellt, der Ka- naleinlass über eine zweite strömungstechnische Verbindung 10 mit dem Strömungskanal verbunden, wobei zweckdienlicherweise eine strömungstechnische Verbindung nach einer Schaufelstufe realisiert wird, bei der die Dampfparameter für einen Kühlka¬ nalkreislauf ideal sind. In a similar manner, as shown in FIG. 3, the channel inlet is connected to the flow channel via a second fluidic connection 10, expediently a fluidic connection after a blade stage is realized, in which the steam parameters are ideal for a Kühlka ¬ nalkreislauf.
Die Figur 2 zeigt das Gehäuseoberteil 1 mit dem Kühlkanalaus- lass 6 und der ersten strömungstechnischen Verbindung 9. 2 shows the upper housing part 1 with the Kühlkanalaus- outlet 6 and the first fluidic connection. 9
Die Figur 3 zeigt das Gehäuseunterteil 2 mit der zweiten strömungstechnischen Verbindung 10 und dem Kühlkanaleinlass 5. FIG. 3 shows the housing lower part 2 with the second fluidic connection 10 and the cooling channel inlet 5.
Die Figur 4 zeigt die Mutter 7 der Schraube 3. Die Mutter 7 weist im Bereich des Gewindes 11 zumindest einen Schlitz 8 auf, durch den der Kühldampf strömen kann. Die Figur 5 zeigt eine Seitenansicht in axialer Richtung 12 der Strömungsmaschine. Die Anordnung des Strömungskanals 13 sowie der Kühlkanaleinlass 5 sowie der Kühlkanalauslass 6 und die erste strömungstechnische Verbindung 9 und die zweite strömungstechnische Verbindung 10 sind in der Figur 5 zu er- kennen. 4 shows the nut 7 of the screw 3. The nut 7 has at least one slot 8 in the region of the thread 11, through which the cooling steam can flow. FIG. 5 shows a side view in the axial direction 12 of the turbomachine. The arrangement of the flow channel 13 as well as the cooling channel inlet 5 and the cooling channel outlet 6 and the first fluidic connection 9 and the second fluidic connection 10 can be seen in FIG.

Claims

Patentansprüche claims
1. Strömungsmaschine umfassend ein Gehäuse aus 1. Turbomachine comprising a housing
einem Gehäuseoberteil (1),  an upper housing part (1),
einem Gehäuseunterteil (2) und einem im Gehäuse angeordne¬ ten Strömungskanal (13), a lower housing part (2) and a flow channel (13) arranged in the housing,
wobei der Strömungskanal (13) einen Strömungskanalabdampf- räum aufweist,  wherein the flow channel (13) has a flow channel evaporation space,
wobei das Gehäuseoberteil (1) über Schrauben (3) mit dem Gehäuseunterteil (2) verbindbar ist,  wherein the housing upper part (1) via screws (3) with the housing lower part (2) is connectable,
wobei die Schraube (3) als Stiftschraube ausgebildet ist und einen entlang der axialen Richtung der Stiftschraube ausgebildeten Kühlkanal (4) aufweist,  wherein the screw (3) is designed as a stud and has a cooling channel (4) formed along the axial direction of the stud,
wobei der Kühlkanal (4) einen Kühlkanaleinlass (5) und ei¬ nen Kühlkanalauslass (6) aufweist, wherein the cooling channel (4) comprises a cooling channel inlet (5) and ei ¬ NEN Kühlkanalauslass (6),
wobei der Kühlkanaleinlass (5) strömungstechnisch mit dem Strömungskanal (13) verbunden ist,  wherein the cooling channel inlet (5) is fluidically connected to the flow channel (13),
wobei der Kühlkanalauslass (6) strömungstechnisch über ei- nen zwischen der Stiftschraube und dem Gehäuse angeordneten wherein the cooling channel outlet (6) fluidly arranged via a NEN between the stud and the housing
Schraubenkühlkanal (14) mit dem Strömungskanalabdampfräum verbunden ist. Screw cooling channel (14) is connected to the Strömungskanalabdampfräum.
2. Strömungsmaschine nach Anspruch 1, 2. Turbomachine according to claim 1,
wobei die Stiftschraube eine Mutter (7) umfasst,  wherein the stud screw comprises a nut (7),
wobei die Mutter (7) Kühlkanalschlitze (8) umfasst, die den Kühlkanal (4) mit dem Strömungskanalabdampfräum strömungstechnisch verbindet.  wherein the nut (7) comprises cooling channel slots (8) which fluidly connects the cooling channel (4) with the flow channel evacuation chamber.
3. Strömungsmaschine nach Anspruch 1 oder 2, 3. Turbomachine according to claim 1 or 2,
wobei das Gehäuseunterteil (2) eine Bohrung aufweist, die den Kühlkanaleinlass (5) mit dem Strömungskanal (13) ver- bindet. wherein the housing lower part (2) has a bore which connects the cooling channel inlet (5) with the flow channel (13).
4. Strömungsmaschine nach einem der vorhergehenden Ansprüche, 4. Turbomachine according to one of the preceding claims,
wobei der Kühlkanaleinlass (5) im Gehäuseunterteil (2) an¬ geordnet ist. wherein the cooling channel inlet (5) in the housing lower part (2) is arranged on ¬ .
5. Strömungsmaschine nach einem der vorhergehenden Ansprü¬ che, 5. flow machine according to Ansprü ¬ che,
wobei der Kühlkanalauslass (6) im Gehäuseoberteil (1) ange¬ ordnet ist. wherein the cooling channel outlet (6) in the upper housing part (1) is arranged ¬ .
6. Strömungsmaschine nach einem der vorhergehenden Ansprü¬ che, 6. turbomachine according to one of the preceding Ansprü ¬ che,
wobei die Strömungsmaschine als Dampfturbine ausgebildet ist .  wherein the turbomachine is designed as a steam turbine.
EP13713767.5A 2012-03-27 2013-03-18 Turbomachine with bolt cooling Not-in-force EP2802748B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13713767.5A EP2802748B1 (en) 2012-03-27 2013-03-18 Turbomachine with bolt cooling

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12161469.7A EP2644843A1 (en) 2012-03-27 2012-03-27 Screw cooling for a flow machine
EP13713767.5A EP2802748B1 (en) 2012-03-27 2013-03-18 Turbomachine with bolt cooling
PCT/EP2013/055506 WO2013143894A1 (en) 2012-03-27 2013-03-18 Screw cooling for a fluid flow machine

Publications (2)

Publication Number Publication Date
EP2802748A1 true EP2802748A1 (en) 2014-11-19
EP2802748B1 EP2802748B1 (en) 2016-02-17

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EP12161469.7A Withdrawn EP2644843A1 (en) 2012-03-27 2012-03-27 Screw cooling for a flow machine
EP13713767.5A Not-in-force EP2802748B1 (en) 2012-03-27 2013-03-18 Turbomachine with bolt cooling

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12161469.7A Withdrawn EP2644843A1 (en) 2012-03-27 2012-03-27 Screw cooling for a flow machine

Country Status (6)

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US (1) US20150050132A1 (en)
EP (2) EP2644843A1 (en)
JP (1) JP5883986B2 (en)
CN (1) CN104395562B (en)
IN (1) IN2014DN07089A (en)
WO (1) WO2013143894A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507963A (en) * 2015-12-23 2016-04-20 上海电气电站设备有限公司 Cooling system for cooling bolt working at high temperature
RU2641782C2 (en) * 2016-05-30 2018-01-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" Steam turbines high-temperature stud pins refrigeration method and device for its actualization
RU2641787C2 (en) * 2016-05-30 2018-01-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" Gas-driven turbines high-temperature stud pins refrigeration method and device for its actualization
RU173973U1 (en) * 2016-05-30 2017-09-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" COOLING DEVICE FOR HIGH-TEMPERATURE STEPS OF STEAM AND GAS TURBINES
EP3591176A1 (en) * 2018-07-05 2020-01-08 Siemens Aktiengesellschaft Cooled flange connection for a turbomachine

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CH306453A (en) * 1952-12-12 1955-04-15 Bbc Brown Boveri & Cie Flange connection screw for housings of steam turbines, gas turbines and the like.
JPS54142704U (en) * 1978-03-29 1979-10-03
JPS54132008A (en) * 1978-04-05 1979-10-13 Hitachi Ltd Turbine casing
JPS57119109A (en) * 1981-01-14 1982-07-24 Hitachi Ltd Cleaning device for steam turbine wheel chamber horizontal flange clamping bolt
JPS59131906U (en) * 1983-02-25 1984-09-04 株式会社東芝 Turbine compartment tightening bolt cooling system
US4820097A (en) * 1988-03-18 1989-04-11 United Technologies Corporation Fastener with airflow opening
JP4015284B2 (en) * 1998-06-09 2007-11-28 三菱重工業株式会社 Flange cooling structure of steam turbine casing
DE19850470A1 (en) * 1998-11-02 2000-02-03 Siemens Ag Turbine housing e.g. with internal cooling of part-joined zone sealing bolts of steam turbine
US7037065B2 (en) * 2002-03-20 2006-05-02 Alstom Technology Ltd Flange bolt for turbines
JP2006037855A (en) * 2004-07-28 2006-02-09 Mitsubishi Heavy Ind Ltd Cylinder casing and gas turbine
US8240988B2 (en) * 2008-03-26 2012-08-14 Siemens Energy, Inc. Fastener assembly with cyclone cooling
EP2187004A1 (en) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Internal casing for a current machine

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Also Published As

Publication number Publication date
CN104395562A (en) 2015-03-04
JP2015511683A (en) 2015-04-20
EP2802748B1 (en) 2016-02-17
IN2014DN07089A (en) 2015-04-24
US20150050132A1 (en) 2015-02-19
CN104395562B (en) 2016-05-25
EP2644843A1 (en) 2013-10-02
WO2013143894A1 (en) 2013-10-03
JP5883986B2 (en) 2016-03-15

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