CA2264996A1 - Sealing device for axial flow turbine - Google Patents

Sealing device for axial flow turbine Download PDF

Info

Publication number
CA2264996A1
CA2264996A1 CA002264996A CA2264996A CA2264996A1 CA 2264996 A1 CA2264996 A1 CA 2264996A1 CA 002264996 A CA002264996 A CA 002264996A CA 2264996 A CA2264996 A CA 2264996A CA 2264996 A1 CA2264996 A1 CA 2264996A1
Authority
CA
Canada
Prior art keywords
segments
sealing ring
plate springs
axial flow
flow turbine
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
CA002264996A
Other languages
French (fr)
Other versions
CA2264996C (en
Inventor
Minoru Matsuda
Toshio Suzuki
Manabu Komiyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of CA2264996A1 publication Critical patent/CA2264996A1/en
Application granted granted Critical
Publication of CA2264996C publication Critical patent/CA2264996C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/08—Shape memory

Landscapes

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

Abstract

A sealing ring is formed by arranging a plurality of segments around the shaft of a rotor of an axial flow turbine with their outer parts received in a holding groove formed in an inner ring included in a nozzle diaphragm. Flat plate springs press the segments of the sealing ring radially inward, and curved plate springs press the segments of the sealing ring radially outward.
The pressing forces of the flat plate springs and the curved plate springs are determined so as to compensate the differences in pressing forces acting on the segments of the sealing ring attributable to the respective own weights of the segments of the sealing ring. The flat plate springs and the curved plate springs prevent the irregular movement of the segments of the sealing ring, ensure the smooth radial movement of the segments of the sealing ring, and prevent contact between sealing fins attached to the segments of the sealing ring and the shaft of the rotor of the axial flow turbine.
CA002264996A 1998-03-06 1999-03-05 Sealing device for axial flow turbine Expired - Fee Related CA2264996C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10071195A JPH11257014A (en) 1998-03-06 1998-03-06 Working fluid leakage prevention apparatus for axial-flow turbine
JP71195/1998 1998-03-06

Publications (2)

Publication Number Publication Date
CA2264996A1 true CA2264996A1 (en) 1999-09-06
CA2264996C CA2264996C (en) 2003-08-19

Family

ID=13453657

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002264996A Expired - Fee Related CA2264996C (en) 1998-03-06 1999-03-05 Sealing device for axial flow turbine

Country Status (5)

Country Link
JP (1) JPH11257014A (en)
KR (1) KR100309970B1 (en)
CN (1) CN1160509C (en)
AU (1) AU720250B2 (en)
CA (1) CA2264996C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107355540A (en) * 2017-08-18 2017-11-17 国网湖南省电力公司 Gap adaptively adjusts sealing structure
CN109611374A (en) * 2019-01-14 2019-04-12 北京星际荣耀空间科技有限公司 A kind of cryogenic liquid rocket engine turbopump sandwich type labyrinth seal structure
US10954808B2 (en) 2015-06-03 2021-03-23 Mitsubishi Power, Ltd. Sealing device and rotary machine
CN114483209A (en) * 2021-12-27 2022-05-13 东方电气集团东方汽轮机有限公司 Shaft end gland sealing structure of steam turbine

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4719334B2 (en) * 2000-04-10 2011-07-06 イーグル工業株式会社 Sealing device
US20040017050A1 (en) * 2002-07-29 2004-01-29 Burdgick Steven Sebastian Endface gap sealing for steam turbine diaphragm interstage packing seals and methods of retrofitting
US6971844B2 (en) * 2003-05-29 2005-12-06 General Electric Company Horizontal joint sealing system for steam turbine diaphragm assemblies
GB2413602B (en) * 2004-04-26 2008-02-13 Alstom Technology Ltd Process for producing leaves for a leaf seal
CA2520792C (en) * 2004-09-30 2014-01-28 General Electric Company Compliant seal and system and method thereof
US7731478B2 (en) * 2006-05-25 2010-06-08 General Electric Company Method and apparatus for variable clearance packing
US7540708B2 (en) * 2006-06-30 2009-06-02 General Electric Company Methods and apparatus to facilitate sealing in a turbine
KR100833165B1 (en) * 2007-01-18 2008-05-28 두성티에스 주식회사 Rotary valve unit
JP4822072B2 (en) * 2007-08-08 2011-11-24 横河電機株式会社 Ventilation device
KR100875638B1 (en) 2008-09-10 2008-12-26 배정식 Seal assembly for feed water pump
KR101007119B1 (en) * 2010-10-04 2011-01-10 홍선영 A seal for diaphragm of generator turbine
CH704995A1 (en) 2011-05-24 2012-11-30 Alstom Technology Ltd Turbomachinery.
US8939709B2 (en) * 2011-07-18 2015-01-27 General Electric Company Clearance control for a turbine
US8789833B2 (en) * 2012-03-28 2014-07-29 General Electric Company Turbine assembly and method for assembling a turbine
KR101316774B1 (en) * 2013-02-22 2013-10-22 조정봉 Erosion preventive structure of gland casing for low pressure turbine
EP2971692B1 (en) * 2013-03-15 2020-02-12 United Technologies Corporation Vibration damping apparatus for hydrostatic seal of gas turbine engine
CN103195929B (en) * 2013-04-27 2016-03-30 四川东能节能技术有限公司 Be applied to the automatic expansion compensation diaphragm seal in rotary regenerative air preheater hot junction
WO2015147967A1 (en) * 2014-03-27 2015-10-01 United Technologies Corporation Gas turbine engine and seal assembly therefore
CN104454033B (en) * 2014-11-03 2017-02-15 中国南方航空工业(集团)有限公司 Sealing ring and gas turbine with same
CN104632413B (en) * 2015-01-30 2018-05-01 北京华清燃气轮机与煤气化联合循环工程技术有限公司 A kind of gas turbine combustion cylinder pressure turns static seal structure
US10502322B2 (en) 2015-03-09 2019-12-10 Eagle Industry Co., Ltd. Split type brush seal device, brush seal pieces, and method of assembling split type brush seal device
JP6842963B2 (en) * 2017-03-23 2021-03-17 三菱パワー株式会社 Shaft sealing device, rotating machine
JP7052263B2 (en) * 2017-09-11 2022-04-12 いすゞ自動車株式会社 Variable nozzle turbocharger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603510A (en) * 1991-06-13 1997-02-18 Sanders; William P. Variable clearance seal assembly
US5395124A (en) * 1993-01-04 1995-03-07 Imo Industries, Inc. Retractible segmented packing ring for fluid turbines having gravity springs to neutralize packing segment weight forces
JP2790063B2 (en) * 1994-11-29 1998-08-27 日本ジョン・クレーン株式会社 mechanical seal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10954808B2 (en) 2015-06-03 2021-03-23 Mitsubishi Power, Ltd. Sealing device and rotary machine
CN107355540A (en) * 2017-08-18 2017-11-17 国网湖南省电力公司 Gap adaptively adjusts sealing structure
CN107355540B (en) * 2017-08-18 2023-07-14 国网湖南省电力公司 Gap self-adaptive adjusting sealing structure
CN109611374A (en) * 2019-01-14 2019-04-12 北京星际荣耀空间科技有限公司 A kind of cryogenic liquid rocket engine turbopump sandwich type labyrinth seal structure
CN114483209A (en) * 2021-12-27 2022-05-13 东方电气集团东方汽轮机有限公司 Shaft end gland sealing structure of steam turbine
CN114483209B (en) * 2021-12-27 2023-07-14 东方电气集团东方汽轮机有限公司 Sealing structure of steam seal body at shaft end of steam turbine

Also Published As

Publication number Publication date
CN1160509C (en) 2004-08-04
CN1228505A (en) 1999-09-15
JPH11257014A (en) 1999-09-21
KR100309970B1 (en) 2001-10-29
CA2264996C (en) 2003-08-19
AU1863399A (en) 1999-09-16
AU720250B2 (en) 2000-05-25
KR19990077657A (en) 1999-10-25

Similar Documents

Publication Publication Date Title
CA2264996A1 (en) Sealing device for axial flow turbine
CA2035013A1 (en) Static and dynamic shaft seal assembly
EP1018613A3 (en) A seal
CA2238985A1 (en) Tapered bearing housing
ATE265326T1 (en) TIRE PRESSURE CONTROL SYSTEM
EP1116893A3 (en) Multi-plate dry clutch having hub movement limiting means
CA2315180A1 (en) Nozzle adjusting mechanism
ES8207296A1 (en) Spring engaged fluid released fan clutch for a live shaft
RU2002119201A (en) GAS TURBINE ENGINE AND SIDE GAP ADJUSTMENT FOR GAS TURBINE ENGINE (OPTIONS)
CA2193053A1 (en) Stuffing box with improved packing rings and method
CA2437855A1 (en) Brush seal support
WO1996031716A3 (en) Improved mechanical seal with flexible metal diaphragm
CA2301772A1 (en) Sealing ring
CA2029202A1 (en) Rotary vibration damper
CA2152991A1 (en) Seal for rolling bearings
CA2375360A1 (en) Swivel apparatus
CA2312949A1 (en) Support for a turbine stator assembly
WO2004079235A3 (en) Balanced mechanical seal assembly
CA2181290A1 (en) Rotational control apparatus
CA2404187A1 (en) Improved flange for connection between an axial compressor and high-pressure rotor disc unit in a gas turbine
CA2032643A1 (en) Quenching mechanism of shaft seal for slurry pumps
CN210034403U (en) Cylindrical seal for gas turbine and turbocharger
CA2302163A1 (en) Seal device
CA2216361A1 (en) Transfer ring for continuously variable transmission
CN217576963U (en) Quick installation device of intelligence bearing roller magnetic shoe

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed