EP2644843A1 - Schraubenkühlung für eine Strömungsmaschine - Google Patents

Schraubenkühlung für eine Strömungsmaschine Download PDF

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Publication number
EP2644843A1
EP2644843A1 EP12161469.7A EP12161469A EP2644843A1 EP 2644843 A1 EP2644843 A1 EP 2644843A1 EP 12161469 A EP12161469 A EP 12161469A EP 2644843 A1 EP2644843 A1 EP 2644843A1
Authority
EP
European Patent Office
Prior art keywords
cooling
flow channel
cooling channel
channel
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12161469.7A
Other languages
German (de)
English (en)
French (fr)
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 EP12161469.7A priority Critical patent/EP2644843A1/de
Priority to IN7089DEN2014 priority patent/IN2014DN07089A/en
Priority to PCT/EP2013/055506 priority patent/WO2013143894A1/de
Priority to EP13713767.5A priority patent/EP2802748B1/de
Priority to CN201380017521.1A priority patent/CN104395562B/zh
Priority to US14/386,795 priority patent/US20150050132A1/en
Priority to JP2015502200A priority patent/JP5883986B2/ja
Publication of EP2644843A1 publication Critical patent/EP2644843A1/de
Withdrawn legal-status Critical Current

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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
    • F01D25/08—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 flow channel has a Strömungskanalabdampfraum, wherein the housing part via screws to the lower housing part is connectable, wherein the screw is formed as a stud and one along the
  • the cooling channel has a cooling channel inlet and a cooling channel outlet.
  • steam turbines In steam power plants steam turbines are used, which can apply an electrical output of up to 1600 megawatts. For thermodynamic reasons, a steam turbine is divided into so-called sub-turbines, which have a common shaft.
  • the high-pressure turbine part comprises an inner 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 arise time and temperature-dependent relaxations. As a result, it may be that the tension of the housing and thus the tightness during operation decreases, which can lead to leakage and is associated with a loss of efficiency.
  • a turbomachine comprising a housing comprising an upper housing part, a lower housing part and a flow channel arranged in the housing, wherein the flow channel has a Strömungskanalabdampfraum, wherein the upper housing part via screws to the lower housing part is connectable, wherein the screw is designed as a stud and a wherein the cooling channel has a cooling channel inlet and a cooling channel outlet, wherein the cooling channel inlet is fluidically connected to the flow channel, wherein the cooling channel outlet is fluidly connected to the Strömungskanalabdampfraum.
  • 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 Strömungskanalabdampfraum.
  • the vapor from the flow channel has a higher pressure than the vapor in the Strömungskanalabdampfraum, so that a forced flow through the cooling channel in the stud has resulted, resulting in a cooling 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 passage steam space.
  • the housing lower part has a bore which connects the cooling channel inlet to the flow channel.
  • This hole can be made in an axial direction of the housing top and bottom. It is important that at a suitable location, the bore has a fluidic connection that provides the appropriate vapor for the cooling steam.
  • FIG. 1 shows a schematic view of a partial view of a housing upper part 1 and a lower housing part 2.
  • the upper housing part 1 and the lower housing part 2 together a housing which is used in a turbomachine, not shown.
  • a flow channel is arranged (not shown in detail).
  • runners and vanes are arranged, which convert the thermal energy of a steam 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, that is, that the screw 3 has no screw head, but at both ends a thread.
  • a cooling channel 4 is formed, which is connected to a cooling duct inlet 5 and adekanalauslass 6 on the one hand.
  • a slot 8 is arranged in the nut 7 through which the steam can flow into the cooling channel outlet 6.
  • the cooling channel outlet 6 is fluidically connected via a first fluidic connection 9 with the flow channel steam chamber (not shown in more detail).
  • the channel inlet connected via a second fluidic connection 10 with the flow channel, wherein expediently a fluidic connection is realized according to a blade stage, in which the steam parameters are ideal for a cooling channel circulation.
  • FIG. 2 shows the upper housing part 1 with theborokanalauslass 6 and the first fluidic connection. 9
  • FIG. 3 shows the lower housing part 2 with the second fluidic connection 10 and the cooling channel inlet. 5
  • the FIG. 4 shows the nut 7 of the screw 3.
  • the nut 7 has in the region of the thread 11 at least one slot 8, 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 and the cooling channel inlet 5 and the cooling channel outlet 6 and the first fluidic connection 9 and the second fluidic connection 10 are in the FIG. 5 to recognize.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP12161469.7A 2012-03-27 2012-03-27 Schraubenkühlung für eine Strömungsmaschine Withdrawn EP2644843A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP12161469.7A EP2644843A1 (de) 2012-03-27 2012-03-27 Schraubenkühlung für eine Strömungsmaschine
IN7089DEN2014 IN2014DN07089A (ja) 2012-03-27 2013-03-18
PCT/EP2013/055506 WO2013143894A1 (de) 2012-03-27 2013-03-18 Schraubenkühlung für eine strömungsmaschine
EP13713767.5A EP2802748B1 (de) 2012-03-27 2013-03-18 Strömungsmaschine mit schraubenkühlung
CN201380017521.1A CN104395562B (zh) 2012-03-27 2013-03-18 用于流体机械的螺丝冷却装置
US14/386,795 US20150050132A1 (en) 2012-03-27 2013-03-18 Screw cooling for a fluid flow machine
JP2015502200A JP5883986B2 (ja) 2012-03-27 2013-03-18 流体機械のためのスクリュー冷却

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12161469.7A EP2644843A1 (de) 2012-03-27 2012-03-27 Schraubenkühlung für eine Strömungsmaschine

Publications (1)

Publication Number Publication Date
EP2644843A1 true EP2644843A1 (de) 2013-10-02

Family

ID=48045422

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12161469.7A Withdrawn EP2644843A1 (de) 2012-03-27 2012-03-27 Schraubenkühlung für eine Strömungsmaschine
EP13713767.5A Not-in-force EP2802748B1 (de) 2012-03-27 2013-03-18 Strömungsmaschine mit schraubenkühlung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13713767.5A Not-in-force EP2802748B1 (de) 2012-03-27 2013-03-18 Strömungsmaschine mit schraubenkühlung

Country Status (6)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507963A (zh) * 2015-12-23 2016-04-20 上海电气电站设备有限公司 用于冷却在高温下工作的螺栓的冷却系统
EP3591176A1 (de) * 2018-07-05 2020-01-08 Siemens Aktiengesellschaft Gekühlte flanschverbindung für eine strömungsmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2641782C2 (ru) * 2016-05-30 2018-01-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" Способ охлаждения высокотемпературных шпилек паровых турбин и устройство для его осуществления
RU2641787C2 (ru) * 2016-05-30 2018-01-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" Способ охлаждения высокотемпературных шпилек газовых турбин и устройство для его осуществления
RU173973U1 (ru) * 2016-05-30 2017-09-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" Устройство охлаждения высокотемпературных шпилек паровых и газовых турбин

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH306453A (de) * 1952-12-12 1955-04-15 Bbc Brown Boveri & Cie Flanschverbindungsschraube für Gehäuse von Dampfturbinen, Gasturbinen und dergleichen.
DE19850470A1 (de) * 1998-11-02 2000-02-03 Siemens Ag Turbinengehäuse einer Dampfturbine
WO2003078799A1 (de) * 2002-03-20 2003-09-25 Alstom (Switzerland) Ltd Flanschverbindungsschraube für turbinen
US20100003071A1 (en) * 2008-03-26 2010-01-07 Siemens Power Generation, Inc. Fastener Assembly with Cyclone Cooling

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142704U (ja) * 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 (ja) * 1983-02-25 1984-09-04 株式会社東芝 タ−ビン車室締付ボルト冷却装置
US4820097A (en) * 1988-03-18 1989-04-11 United Technologies Corporation Fastener with airflow opening
JP4015284B2 (ja) * 1998-06-09 2007-11-28 三菱重工業株式会社 蒸気タービンケーシングのフランジ冷却構造
JP2006037855A (ja) * 2004-07-28 2006-02-09 Mitsubishi Heavy Ind Ltd 車室ケーシング及びガスタービン
EP2187004A1 (de) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Innengehäuse für eine Strömungsmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH306453A (de) * 1952-12-12 1955-04-15 Bbc Brown Boveri & Cie Flanschverbindungsschraube für Gehäuse von Dampfturbinen, Gasturbinen und dergleichen.
DE19850470A1 (de) * 1998-11-02 2000-02-03 Siemens Ag Turbinengehäuse einer Dampfturbine
WO2003078799A1 (de) * 2002-03-20 2003-09-25 Alstom (Switzerland) Ltd Flanschverbindungsschraube für turbinen
US20100003071A1 (en) * 2008-03-26 2010-01-07 Siemens Power Generation, Inc. Fastener Assembly with Cyclone Cooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507963A (zh) * 2015-12-23 2016-04-20 上海电气电站设备有限公司 用于冷却在高温下工作的螺栓的冷却系统
EP3591176A1 (de) * 2018-07-05 2020-01-08 Siemens Aktiengesellschaft Gekühlte flanschverbindung für eine strömungsmaschine

Also Published As

Publication number Publication date
CN104395562B (zh) 2016-05-25
JP5883986B2 (ja) 2016-03-15
EP2802748A1 (de) 2014-11-19
JP2015511683A (ja) 2015-04-20
IN2014DN07089A (ja) 2015-04-24
WO2013143894A1 (de) 2013-10-03
EP2802748B1 (de) 2016-02-17
US20150050132A1 (en) 2015-02-19
CN104395562A (zh) 2015-03-04

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