US20150050132A1 - Screw cooling for a fluid flow machine - Google Patents

Screw cooling for a fluid flow machine Download PDF

Info

Publication number
US20150050132A1
US20150050132A1 US14/386,795 US201314386795A US2015050132A1 US 20150050132 A1 US20150050132 A1 US 20150050132A1 US 201314386795 A US201314386795 A US 201314386795A US 2015050132 A1 US2015050132 A1 US 2015050132A1
Authority
US
United States
Prior art keywords
cooling duct
housing part
duct
cooling
flow
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.)
Abandoned
Application number
US14/386,795
Other languages
English (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
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JENIKEJEW, EDUARD, KOSTENKO, YEVGEN
Publication of US20150050132A1 publication Critical patent/US20150050132A1/en
Abandoned legal-status Critical Current

Links

Images

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 having an upper housing part, a lower housing part and a flow duct arranged in the housing, wherein the flow duct has a flow duct exhaust steam space, wherein the housing part can be connected to the lower housing part by means of bolts, wherein the bolt is configured as a stud bolt and has a cooling duct along the axial direction of the stud bolt, wherein the cooling duct has a cooling duct inlet and a cooling duct outlet.
  • Steam power stations use steam turbines which are capable of delivering up to 1600 megawatts of electrical power. For thermodynamic reasons, a steam turbine is divided up into what are termed turbine sections having a common shaft.
  • the high-pressure turbine section generally comprises an inner housing which has an upper part and a lower part and which is held together by means of bolted connections.
  • Time- and temperature-dependent relaxations arise as a consequence of the high temperatures and of the temporal behavior of the temperature change. This can result in the clamping of the housing, and thus the seal, deteriorating during operation, which can lead to leakage and is accompanied by a loss of efficiency.
  • a turbomachine comprising a housing having an upper housing part, a lower housing part and a flow duct arranged in the housing, wherein the flow duct has a flow duct exhaust steam space, wherein the upper housing part can be connected to the lower housing part by means of bolts, wherein the bolt is configured as a stud bolt and has a cooling duct along the axial direction of the stud bolt, wherein the cooling duct has a cooling duct inlet and a cooling duct outlet, wherein the cooling duct inlet is fluidically connected to the flow duct, wherein the cooling duct outlet is fluidically connected to the flow duct exhaust steam space.
  • An aspect of the invention thus proposes employing, in the stud bolts used for the bolted connection, a cooling bore which is known per se and which is supplied on one side with steam present in the flow duct, and which is connected on the other side to the flow duct exhaust steam space via a cooling duct outlet.
  • the steam from the flow duct is at a higher pressure than the steam in the flow duct exhaust steam space, so producing a forced flow through the cooling duct of the stud bolt, leading to a cooling of the bolt overall.
  • the stud bolt comprises a nut, wherein the nut comprises cooling duct slots which fluidically connect the cooling duct to the flow duct exhaust steam space.
  • the lower housing part has a bore which connects the cooling duct inlet to the flow duct.
  • This bore may be executed in an axial direction of the upper housing part and lower housing part. It is important in this context that, at a suitable position, the bore has a fluidic connection which delivers the steam intended for the cooling steam.
  • FIG. 1 shows a partial detail of a bolted connection according to aspects of the invention
  • FIG. 2 shows the upper housing part
  • FIG. 3 shows the lower housing part
  • FIG. 4 shows a plan view of a nut according to aspects of the invention
  • FIG. 5 shows a schematic side view of the upper housing part and of the lower housing part.
  • FIG. 1 shows, schematically, a partial view of an upper housing part 1 and of a lower housing part 2 .
  • the upper housing part 1 and the lower housing part 2 together form a housing which is used in a turbomachine (not shown in more detail).
  • a flow duct (not shown in more detail) is arranged between the upper housing part 1 and the lower housing part 2 .
  • Rotor blades and guide vanes which convert the thermal energy of steam into rotational energy of a rotor, are arranged in this flow duct.
  • the upper housing part 1 and the lower housing part 2 are connected to one another by means of bolts 3 .
  • the bolt 3 takes the form of a stud bolt, that is to say that the bolt 3 has no bolt head but a thread at both ends.
  • a cooling duct 4 which is connected on one side to a cooling duct inlet 5 and on the other side to a cooling duct outlet 6 , is formed along the axial direction of the stud bolt.
  • a slot 8 through which the steam can flow into the cooling duct outlet 6 , is arranged in the nut 7 .
  • the cooling duct outlet 6 is fluidically connected to the flow duct exhaust steam space (not shown in more detail) via a first fluidic connection 9 .
  • the cooling duct outlet 6 is fluidically connected to the flow duct exhaust steam space via a bolt cooling duct 14 arranged between the stud bolt and the housing, in particular the upper housing part 1 .
  • the duct inlet is connected to the flow duct via a second fluidic connection 10 , wherein a fluidic connection is expediently created after a blade or vane stage in which the steam parameters are ideal for a cooling duct circuit.
  • FIG. 2 shows the upper housing part 1 with the cooling duct outlet 6 and the first fluidic connection 9 .
  • FIG. 3 shows the lower housing part 2 with the second fluidic connection 10 and the cooling duct inlet 5 .
  • FIG. 4 shows the nut 7 for the bolt 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 duct 13 , the cooling duct inlet 5 and the cooling duct outlet 6 , and the first fluidic connection 9 and the second fluidic connection 10 are shown in FIG. 5 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
US14/386,795 2012-03-27 2013-03-18 Screw cooling for a fluid flow machine Abandoned US20150050132A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12161469.7 2012-03-27
EP12161469.7A EP2644843A1 (de) 2012-03-27 2012-03-27 Schraubenkühlung für eine Strömungsmaschine
PCT/EP2013/055506 WO2013143894A1 (de) 2012-03-27 2013-03-18 Schraubenkühlung für eine strömungsmaschine

Publications (1)

Publication Number Publication Date
US20150050132A1 true US20150050132A1 (en) 2015-02-19

Family

ID=48045422

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/386,795 Abandoned US20150050132A1 (en) 2012-03-27 2013-03-18 Screw cooling for a fluid flow machine

Country Status (6)

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

Cited By (3)

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

Families Citing this family (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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820097A (en) * 1988-03-18 1989-04-11 United Technologies Corporation Fastener with airflow opening

Family Cites Families (11)

* 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.
JPS54142704U (enrdf_load_stackoverflow) * 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
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
DE19850470A1 (de) * 1998-11-02 2000-02-03 Siemens Ag Turbinengehäuse einer Dampfturbine
US7037065B2 (en) * 2002-03-20 2006-05-02 Alstom Technology Ltd Flange bolt for turbines
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
US8240988B2 (en) * 2008-03-26 2012-08-14 Siemens Energy, Inc. Fastener assembly with cyclone cooling
EP2187004A1 (de) * 2008-11-13 2010-05-19 Siemens Aktiengesellschaft Innengehäuse für eine Strömungsmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820097A (en) * 1988-03-18 1989-04-11 United Technologies Corporation Fastener with airflow opening

Cited By (3)

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

Also Published As

Publication number Publication date
JP2015511683A (ja) 2015-04-20
JP5883986B2 (ja) 2016-03-15
EP2802748A1 (de) 2014-11-19
EP2644843A1 (de) 2013-10-02
CN104395562A (zh) 2015-03-04
EP2802748B1 (de) 2016-02-17
WO2013143894A1 (de) 2013-10-03
CN104395562B (zh) 2016-05-25
IN2014DN07089A (enrdf_load_stackoverflow) 2015-04-24

Similar Documents

Publication Publication Date Title
US8726672B2 (en) Cooling system for a gas turbine and corresponding operation method
US8454303B2 (en) Turbine nozzle assembly
US20150050132A1 (en) Screw cooling for a fluid flow machine
US20110091327A1 (en) Turbines And Turbine Blade Winglets
JP7175599B2 (ja) 後縁冷却回路を備えたターボ機械ブレード
US20150176424A1 (en) Seal system for a gas turbine
US20130170983A1 (en) Turbine assembly and method for reducing fluid flow between turbine components
US20130170994A1 (en) Device and method for aligning tip shrouds
EP2666971A1 (en) Turbomachine having clearance control capability
US9127558B2 (en) Turbomachine including horizontal joint heating and method of controlling tip clearance in a gas turbomachine
EP2948634A1 (en) Gas turbine engine component with angled aperture impingement
KR102323262B1 (ko) 증기 터빈 및 증기 터빈 조립 방법
US10107107B2 (en) Gas turbine engine component with discharge slot having oval geometry
US20160298545A1 (en) Turbine airfoil
EP2672122B1 (en) Method for controlling temperature of a turbine engine compressor and compressor of a turbine engine
JP5551268B2 (ja) 三重構造を有している蒸気タービン
EP2339122A1 (en) Turbine with adjustable volume inlet chamber

Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JENIKEJEW, EDUARD;KOSTENKO, YEVGEN;REEL/FRAME:033782/0959

Effective date: 20140821

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION