CN104395562A - Screw cooling for fluid flow machine - Google Patents

Screw cooling for fluid flow machine Download PDF

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Publication number
CN104395562A
CN104395562A CN201380017521.1A CN201380017521A CN104395562A CN 104395562 A CN104395562 A CN 104395562A CN 201380017521 A CN201380017521 A CN 201380017521A CN 104395562 A CN104395562 A CN 104395562A
Authority
CN
China
Prior art keywords
cooling channel
case part
cooling
flow channel
screw
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
CN201380017521.1A
Other languages
Chinese (zh)
Other versions
CN104395562B (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

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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

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); the cooling duct, on the one hand, is connected to the flow duct (13) with a vapour at a relative high pressure and, on the other hand, comprises a cooling duct outlet (6) connected to the exhaust steam space.

Description

For the screw cooling unit of fluid machinery
Technical field
The present invention relates to a kind of fluid machinery, it comprises housing, described housing is made up of upper case part, lower case part and setting flow channel in the housing, wherein flow channel has flow channel waste vapour chamber, wherein upper case part can be connected with lower case part via screw, wherein screw is configured to stud and has the cooling channel that the axial direction along stud forms, and wherein cooling channel has cooling channel entrance and cooling channel outlet.
Background technique
In steam power station, use steam turbine, described steam turbine can apply until the electric power of 1600 megawatts.Be in thermodynamic reason, steam turbine be divided into so-called sub-turbo machine, described sub-turbo machine has common axle.
Usually, higher pressure subsidiary turbo machine comprises inner housing, and described inner housing is made up of upper-part and lower component and tightens up by means of screw connector.What formed with time and temperature correlation due to the time response of high temperature and temperature variation is lax.Thus, weaken the tension of housing and then weaken sealing at run duration, this can cause leakage and adjoint loss in efficiency.
Therefore tension stable for whole steam parameter as far as possible is it is intended that realized.This can realize by the design of improvement or by better, certain more expensive screw material.
Summary of the invention
Therefore, the object of the invention is: provide a kind of screw of improvement to connect, described screw realizes good tension under being connected to different steam parameters.
Described object is realized by a kind of fluid machinery, it comprises housing, described housing is by upper case part, lower case part and the flow channel composition arranged in the housing, wherein flow channel has flow channel waste vapour chamber, wherein upper case part can be connected with lower case part via screw, wherein screw is configured to stud and has the cooling channel that the axial direction along stud forms, wherein cooling channel has cooling channel entrance and cooling channel outlet, wherein be connected with flow channel cooling channel inlet fluid, wherein be connected with flow channel waste vapour chamber via the screw cooling channel be arranged between stud and housing cooling channel outlet fluid.
Therefore, propose according to the present invention: in the stud connected for screw, apply known Cooling Holes, described Cooling Holes is supplied the steam that is arranged in flow channel on the one hand and is connected with flow channel waste vapour chamber via cooling channel outlet on the other hand.The steam coming from flow channel has the pressure higher than the steam in flow channel waste vapour chamber, and make the forced flow of the cooling channel produced in stud, this causes the cooling of screw on the whole.
Favourable improved form is described in the dependent claims.
Therefore, in the first favourable improved form, stud comprises nut, and wherein nut comprises cooling channel groove, and cooling channel is fluidly connected with flow channel waste vapour chamber by described cooling channel groove.
Therefore propose: by slot machining in nut, described groove will enter into the cooling steam deflection of screw and be connected to flow channel outlet through cooling channel, described flow channel outlet is connected with flow channel waste vapour chamber.Thus, cooling steam is not overflowed, and this causes the improvement of sealing.
In a favourable improved form, lower case part has hole, and cooling channel entrance is connected with flow channel by described hole.
Described hole can be formed along the axial direction of upper case part and lower case part.It is important in this that: hole has fluid joint at suitable position, described fluid joint is provided for the suitable steam of cooling steam.
Accompanying drawing explanation
Now, the present invention is elaborated according to embodiment.
It illustrates
Fig. 1 illustrates the partial cut-away figure that screw according to the present invention connects,
Fig. 2 illustrates upper case part
Fig. 3 illustrates lower case part,
Fig. 4 illustrates the plan view according to nut of the present invention,
Fig. 5 illustrates the diagrammatic side view of upper case part and lower case part.
Embodiment
Fig. 1 schematically illustrates the Local map of upper case part 1 and lower case part 2.Upper case part 1 and lower case part 2 form housing jointly, and described housing is used in the fluid machinery be not shown specifically.Flow channel (not shown in detail) is provided with between upper case part 1 and lower case part 2.Be provided with guide vane and rotor blade in the flow channel, steam thermal energy is converted to the rotation energy of rotor by described guide vane and rotor blade.Upper case part 1 and lower case part 2 are connected to each other via screw 3.For this reason, screw 3 is configured to stud, and that is screw 3 does not have bolt head but has screw thread at two ends.Axial direction along stud forms cooling channel 4, and described cooling channel exports 6 with cooling channel entrance 5 and cooling channel on the one hand and is connected.
Therefore, the steam flowed in cooling channel entrance 5 in axial direction flows through stud through cooling channel 4 and cools stud at this.Finally, cooling steam arrives cooling channel outlet 6.
In order to cooling steam can flow to cooling channel outlet 6 from cooling channel 4, be provided with groove 8 in nut 7, steam can flow in cooling channel outlet 6 through described groove.Cooling channel outlet 6 is fluidly connected with circulation passage waste vapour chamber (not shown in detail) via first fluid joint 9.
Cooling channel outlet 6 is via being arranged on stud and the screw cooling channel 14 of housing especially between upper case part 1 is fluidly connected with flow channel waste vapour chamber.
In such as similar shown in Fig. 3 mode, feeder connection is connected with flow channel via second fluid joint 10, and the fluid wherein realizing leaf-level downstream in an efficient way connects, and wherein steam parameter is desirable for the circulation of cooling channel.
Fig. 2 illustrates the upper case part 1 with cooling channel outlet 6 and first fluid joint 9.
Fig. 3 illustrates the lower case part 2 with second fluid joint 10 and cooling channel entrance 5.
Fig. 4 illustrates the nut 7 of screw 3.Nut 7 has at least one groove 8 in the region of screw thread 11, and cooling steam can flow through described groove.
Fig. 5 illustrates the side view on the axial direction 12 of fluid machinery.The setting of flow channel 13 and cooling channel entrance 5 and cooling channel outlet 6 and first fluid joint 9 and second fluid joint 10 can be identified in Figure 5.

Claims (6)

1. a fluid machinery, it comprises housing, described housing by
Upper case part (1),
Lower case part (2) and flow channel (13) composition be arranged in described housing,
Wherein said flow channel (13) has flow channel waste vapour chamber,
Wherein said upper case part (1) can be connected with described lower case part (2) via screw (3),
Wherein said screw (3) is configured to stud and has the cooling channel (4) that the axial direction along described stud forms,
Wherein said cooling channel (4) has cooling channel entrance (5) and cooling channel outlet (6),
Wherein said cooling channel entrance (5) is fluidly connected with described flow channel (13),
Wherein said cooling channel outlet (6) is fluidly connected with described flow channel waste vapour chamber via the screw cooling channel (14) be arranged between described stud and described housing.
2. fluid machinery according to claim 1, wherein said stud comprises nut (7), wherein said nut (7) comprises cooling channel groove (8), and described cooling channel (4) are fluidly connected with described flow channel waste vapour chamber by described cooling channel groove.
3. fluid machinery according to claim 1 and 2, wherein said lower case part (2) has hole, and described cooling channel entrance (5) is connected with described flow channel (13) by described hole.
4. the fluid machinery according to any one in the claims, wherein said cooling channel entrance (5) is arranged in described lower case part (2).
5. the fluid machinery according to any one in the claims, wherein said cooling channel outlet (6) is arranged in described upper case part (1).
6. the fluid machinery according to any one in the claims, wherein said fluid machinery is configured to steam 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 true CN104395562A (en) 2015-03-04
CN104395562B CN104395562B (en) 2016-05-25

Family

ID=48045422

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 (6)

* Cited by examiner, † Cited by third party
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
US20030180140A1 (en) * 2002-03-20 2003-09-25 Martin Reigl Flange bolt for turbines
CN1993535A (en) * 2004-07-28 2007-07-04 三菱重工业株式会社 Wheel chamber casing and gas turbine
US20100003071A1 (en) * 2008-03-26 2010-01-07 Siemens Power Generation, Inc. Fastener Assembly with Cyclone Cooling
CN102216569A (en) * 2008-11-13 2011-10-12 西门子公司 Inner housing for a turbomachine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* 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
US20030180140A1 (en) * 2002-03-20 2003-09-25 Martin Reigl Flange bolt for turbines
CN1993535A (en) * 2004-07-28 2007-07-04 三菱重工业株式会社 Wheel chamber casing and gas turbine
US20100003071A1 (en) * 2008-03-26 2010-01-07 Siemens Power Generation, Inc. Fastener Assembly with Cyclone Cooling
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
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
CN104395562B (en) 2016-05-25

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

Granted publication date: 20160525

Termination date: 20170318

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