CN104395562B - For the screw cooling device of fluid machinery - Google Patents

For the screw cooling device of fluid machinery Download PDF

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Publication number
CN104395562B
CN104395562B CN201380017521.1A CN201380017521A CN104395562B CN 104395562 B CN104395562 B CN 104395562B CN 201380017521 A CN201380017521 A CN 201380017521A CN 104395562 B CN104395562 B CN 104395562B
Authority
CN
China
Prior art keywords
cooling duct
flow channel
screw
fluid machinery
double
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.)
Expired - Fee Related
Application number
CN201380017521.1A
Other languages
Chinese (zh)
Other versions
CN104395562A (en
Inventor
爱德华德·叶尼克耶夫
叶夫根·科斯坚科
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
Publication of CN104395562A publication Critical patent/CN104395562A/en
Application granted granted Critical
Publication of CN104395562B publication Critical patent/CN104395562B/en
Expired - Fee Related 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

Landscapes

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

Abstract

The present invention relates to a kind of fluid machinery, it comprises the housing being made up of housing upper-part (1) and lower housing portion part (2), its middle shell upper-part (1) is connected with lower housing portion part (2) via double-screw bolt (3) and has a cooling duct (4), described cooling duct is connected with the flow channel (13) of steam with higher pressure on the one hand and forms on the other hand to be had cooling duct outlet (6), described cooling duct to export to be connected with waste vapour chamber.

Description

For the screw cooling device of fluid machinery
Technical field
The present invention relates to a kind of fluid machinery, it comprises housing, described housing by housing upper-part,Lower housing portion part and the flow channel being arranged in housing form, and wherein flow channel has mobile logicalWaste vapour chamber, road, its middle shell upper-part can be connected with lower housing portion part via screw, wherein screwBe configured to double-screw bolt and there is the cooling duct forming along the axial direction of double-screw bolt, wherein cooling logicalRoad has cooling duct entrance and cooling duct outlet.
Background technology
In steam power plant, use steam turbine, described steam turbine can apply until 1600The electrical power of megawatt. In thermodynamic reason, steam turbine is divided into so-called sub-turbine,Described sub-turbine has common axle.
Conventionally, higher pressure subsidiary turbine comprises inner housing, and described inner housing is by upper-part and lower component groupBecome and tighten up by means of screw connector. Due to the time response of high temperature and variations in temperatureRelaxing of formation and time and temperature correlation. Thus, run duration weaken housing tension and thenWeaken sealing, this can cause leakage and follow loss in efficiency.
Therefore expect: realize as far as possible for the stable tension of whole steam parameters. This canRealize by improved design or by better, certain more expensive screw material.
Summary of the invention
Therefore, the object of the invention is: provide a kind of improved screw to connect, described screw connectsUnder different steam parameters, realize good tension.
Described object realizes by a kind of fluid machinery, and it comprises housing, and described housing is by housingUpper-part, lower housing portion part and the flow channel being arranged in housing form, wherein flow channel toolHave flow channel waste vapour chamber, its middle shell upper-part can be connected with lower housing portion part via screw,Wherein screw is configured to double-screw bolt and has the cooling duct forming along the axial direction of double-screw bolt, itsMiddle cooling duct has cooling duct entrance and cooling duct outlet, wherein cooling duct inlet fluidGround be connected with flow channel, wherein cooling duct export fluidly via be arranged on double-screw bolt and housing itBetween screw cooling duct be connected with flow channel waste vapour chamber, wherein said double-screw bolt comprises nut, itsDescribed in nut comprise cooling duct groove, described cooling duct groove is by described cooling duct and described streamMoving passage waste vapour chamber fluidly connects, and wherein said nut has screw thread and described cooling duct grooveBe arranged in the region of described screw thread.
Therefore, propose according to the present invention: apply known cooling at the double-screw bolt connecting for screwHole, described Cooling Holes be supplied be on the one hand arranged in the steam of flow channel and on the other hand viaCooling duct outlet is connected with flow channel waste vapour chamber. The steam that comes from flow channel has than flowingThe higher pressure of steam in passage waste vapour chamber, makes to produce strong through the cooling duct in double-screw boltSystem flows, and this causes the cooling of screw on the whole.
Favourable improved form is described hereinafter.
Therefore, in the first favourable improved form, double-screw bolt comprises nut, and wherein nut comprises coldBut channel slot, Cao Jiang cooling duct, described cooling duct is fluidly connected with flow channel waste vapour chamber.
Therefore propose: groove is worked in nut, and described groove will enter into screw through cooling ductIn cooling steam deflection and be connected to flow channel outlet, described flow channel outlet with flowPassage waste vapour chamber connects. Thus, cooling steam is not overflowed, and this causes the improvement of sealing.
In a favourable improved form, lower housing portion part has hole, and described hole is by cooling ductEntrance is connected with flow channel.
Described hole can form along the axial direction of housing upper-part and lower housing portion part. Important at this: hole has fluid connecting portion at suitable position, and described fluid connecting portion is provided for coldBut the suitable steam of steam.
Brief description of the drawings
Now, elaborate the present invention according to embodiment.
It illustrates
Fig. 1 illustrates the part sectional drawing connecting according to screw of the present invention,
Fig. 2 illustrates housing upper-part
Fig. 3 illustrates lower housing portion part,
Fig. 4 illustrates the top view according to nut of the present invention,
Fig. 5 illustrates the diagrammatic side view of housing upper-part and lower housing portion part.
Detailed description of the invention
Fig. 1 schematically illustrates the Local map of housing upper-part 1 and lower housing portion part 2. Housing topThe common housing that forms of part 1 and lower housing portion part 2, described housing uses the stream not being shown specificallyIn body machinery. Between housing upper-part 1 and lower housing portion part 2, be provided with flow channel (not detailedCarefully illustrate). In described flow channel, be provided with guide vane and rotor blade, described directing vaneSheet and rotor blade convert steam thermal energy to the rotation energy of rotor. Under housing upper-part 1 and housingParts 2 are connected to each other via screw 3. For this reason, screw 3 is configured to double-screw bolt, that is to say screw3 do not have bolt head but have screw thread at two ends. Form cooling logical along the axial direction of double-screw boltRoad 4, described cooling duct is connected with cooling duct entrance 5 and cooling duct outlet 6 on the one hand.
Therefore the steam, flowing in cooling duct entrance 5 through cooling duct 4 in axial directionFlow through double-screw bolt and at this cooling double-screw bolt. Finally, cooling steam arrives cooling duct outlet 6.
For cooling steam can flow to cooling duct outlet 6, at nut from cooling duct 4In 7, be provided with groove 8, steam can flow in cooling duct outlet 6 through described groove. CoolingChannel outlet 6 is via first fluid connecting portion 9 and circulation passage waste vapour chamber (not shown in detail) streamBody ground connects.
Cooling duct outlet 6 is via being arranged on the especially spiral shell between housing upper-part 1 of double-screw bolt and housingSilk cooling duct 14 is fluidly connected with flow channel waste vapour chamber.
In similar mode shown in Fig. 3, feeder connection via second fluid connecting portion 10 withFlow channel connects, and wherein realizes the fluid connection in leaf-level downstream in effective mode, Qi ZhongzhengVapour parameter is desirable for the circulation of cooling duct.
Fig. 2 illustrates the housing upper-part 1 with cooling duct outlet 6 and first fluid connecting portion 9.
Fig. 3 illustrates the lower housing portion part 2 with second fluid connecting portion 10 and cooling duct entrance 5.
Fig. 4 illustrates the nut 7 of screw 3. Nut 7 has at least one in the region of screw thread 11Groove 8, cooling steam can flow through described groove.
Fig. 5 illustrates the side view on the axial direction 12 of fluid machinery. In Fig. 5, can identifyThe setting of flow channel 13 and cooling duct entrance 5 and cooling duct outlet 6 and first-classBody connecting portion 9 and second fluid connecting portion 10.

Claims (5)

1. a fluid machinery, it comprises housing, described housing by
Housing upper-part (1),
Lower housing portion part (2) and the flow channel (13) being arranged in described housing form,
Wherein said flow channel (13) has flow channel waste vapour chamber,
Wherein said housing upper-part (1) can be via screw (3) and described lower housing portion part (2)Connect,
Wherein said screw (3) is configured to double-screw bolt and has the axial direction along described double-screw boltThe cooling duct (4) forming,
Wherein said cooling duct (4) has cooling duct entrance (5) and cooling duct outlet (6),
Wherein said cooling duct entrance (5) is fluidly connected with described flow channel (13),
Wherein said cooling duct outlet (6) is via being arranged between described double-screw bolt and described housingScrew cooling duct (14) be fluidly connected with described flow channel waste vapour chamber,
Wherein said double-screw bolt comprises nut (7),
Wherein said nut (7) comprises cooling duct groove (8), described in described cooling duct groove is incited somebody to actionCooling duct (4) is fluidly connected with described flow channel waste vapour chamber,
Wherein said nut (7) has screw thread (11) and described cooling duct groove (8) arrangesIn the region of described screw thread (11).
2. fluid machinery according to claim 1, wherein said lower housing portion part (2) toolPorose, described hole is connected described cooling duct entrance (5) with described flow channel (13).
3. fluid machinery according to claim 1 and 2, wherein said cooling duct entrance (5)Be arranged in described lower housing portion part (2).
4. fluid machinery according to claim 1, wherein said cooling duct outlet (6)Be arranged in described housing upper-part (1).
5. fluid machinery according to claim 1, wherein said fluid machinery is configured to steamingSteam turbine.
CN201380017521.1A 2012-03-27 2013-03-18 For the screw cooling device of fluid machinery Expired - Fee Related CN104395562B (en)

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
EP12161469.7 2012-03-27
PCT/EP2013/055506 WO2013143894A1 (en) 2012-03-27 2013-03-18 Screw cooling for a fluid flow machine

Publications (2)

Publication Number Publication Date
CN104395562A CN104395562A (en) 2015-03-04
CN104395562B true CN104395562B (en) 2016-05-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380017521.1A Expired - Fee Related CN104395562B (en) 2012-03-27 2013-03-18 For the screw cooling device of fluid machinery

Country Status (6)

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

Families Citing this family (5)

* 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

Citations (4)

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Publication number Priority date Publication date Assignee Title
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
CN1294252A (en) * 1998-06-09 2001-05-09 三菱重工业株式会社 Cooling structure of outer shell flanch of steam turbine
CN1993535A (en) * 2004-07-28 2007-07-04 三菱重工业株式会社 Wheel chamber casing and gas turbine
CN102216569A (en) * 2008-11-13 2011-10-12 西门子公司 Inner housing for a turbomachine

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Publication number Priority date Publication date Assignee Title
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
US7037065B2 (en) * 2002-03-20 2006-05-02 Alstom Technology Ltd Flange bolt for turbines
US8240988B2 (en) * 2008-03-26 2012-08-14 Siemens Energy, Inc. Fastener assembly with cyclone cooling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1294252A (en) * 1998-06-09 2001-05-09 三菱重工业株式会社 Cooling structure of outer shell flanch of steam turbine
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
CN1993535A (en) * 2004-07-28 2007-07-04 三菱重工业株式会社 Wheel chamber casing and gas turbine
CN102216569A (en) * 2008-11-13 2011-10-12 西门子公司 Inner housing for a turbomachine

Also Published As

Publication number Publication date
IN2014DN07089A (en) 2015-04-24
JP2015511683A (en) 2015-04-20
EP2802748B1 (en) 2016-02-17
CN104395562A (en) 2015-03-04
JP5883986B2 (en) 2016-03-15
EP2644843A1 (en) 2013-10-02
EP2802748A1 (en) 2014-11-19
US20150050132A1 (en) 2015-02-19
WO2013143894A1 (en) 2013-10-03

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Granted publication date: 20160525

Termination date: 20170318

CF01 Termination of patent right due to non-payment of annual fee