JPS57153904A - Device for sealing up clearance of gas turbine - Google Patents

Device for sealing up clearance of gas turbine

Info

Publication number
JPS57153904A
JPS57153904A JP3937281A JP3937281A JPS57153904A JP S57153904 A JPS57153904 A JP S57153904A JP 3937281 A JP3937281 A JP 3937281A JP 3937281 A JP3937281 A JP 3937281A JP S57153904 A JPS57153904 A JP S57153904A
Authority
JP
Japan
Prior art keywords
seal ring
turbine
clearance
moving vane
gas 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.)
Pending
Application number
JP3937281A
Other languages
Japanese (ja)
Inventor
Sadao Umezawa
Kensho Matsuda
Fukuju Terunuma
Masayuki Nakamura
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3937281A priority Critical patent/JPS57153904A/en
Publication of JPS57153904A publication Critical patent/JPS57153904A/en
Pending legal-status Critical Current

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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/20—Actively adjusting tip-clearance
    • F01D11/22—Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor

Abstract

PURPOSE:To improve the effeciency of a gas turbine, by providing a seal ring between the casing and moving vane of the turbine so that the seal ring can be moved in the axial direction of the rotor of the turbine to optionally adjust the clearance between the tip of the moving vane and a static member. CONSTITUTION:A protrustion 6, which extends outward in the radial direction of a turbine, is provided on the upstream end of a shroud 5 provided on the tip of the moving vane 4 inserted in the wheel. A seal ring 7, which has a labyrinth 8 and consists of several segments juxtaposed in the circumferential direction, is provided upstream to the protrusion 6. Guide bars 9 are attached to the segments of the seal ring 7 and slidably inserted in the guide grooves 11 of a vane ring 2. Racks 10 are provided on the guide bars 9 opposite the guide grooves 11 and engaged with pinions 13 mounted on the lower ends of drive rods 12. Drive racks 17 engaged with other pinions 13 on the upper ends of the drive rods 12 can be operated to rotate the driven rods to adjust the clearance between the seal ring 7 and the protrusion 6.
JP3937281A 1981-03-20 1981-03-20 Device for sealing up clearance of gas turbine Pending JPS57153904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3937281A JPS57153904A (en) 1981-03-20 1981-03-20 Device for sealing up clearance of gas turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3937281A JPS57153904A (en) 1981-03-20 1981-03-20 Device for sealing up clearance of gas turbine

Publications (1)

Publication Number Publication Date
JPS57153904A true JPS57153904A (en) 1982-09-22

Family

ID=12551213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3937281A Pending JPS57153904A (en) 1981-03-20 1981-03-20 Device for sealing up clearance of gas turbine

Country Status (1)

Country Link
JP (1) JPS57153904A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123804A (en) * 1984-07-10 1986-02-01 Hitachi Ltd Turbine stage structure
DE4028330A1 (en) * 1989-09-08 1991-03-21 Gen Electric Mechanical blade tip clearance control - has shroud hanger disposed between casing and opening in casing
US5049033A (en) * 1990-02-20 1991-09-17 General Electric Company Blade tip clearance control apparatus using cam-actuated shroud segment positioning mechanism
CN112082455A (en) * 2020-08-11 2020-12-15 中广核核电运营有限公司 Auxiliary adjusting device for thickness of boss of steam seal block and method for adjusting thickness of boss of steam seal block

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123804A (en) * 1984-07-10 1986-02-01 Hitachi Ltd Turbine stage structure
US4662820A (en) * 1984-07-10 1987-05-05 Hitachi, Ltd. Turbine stage structure
JPH0435601B2 (en) * 1984-07-10 1992-06-11 Hitachi Ltd
DE4028330A1 (en) * 1989-09-08 1991-03-21 Gen Electric Mechanical blade tip clearance control - has shroud hanger disposed between casing and opening in casing
US5018942A (en) * 1989-09-08 1991-05-28 General Electric Company Mechanical blade tip clearance control apparatus for a gas turbine engine
US5049033A (en) * 1990-02-20 1991-09-17 General Electric Company Blade tip clearance control apparatus using cam-actuated shroud segment positioning mechanism
CN112082455A (en) * 2020-08-11 2020-12-15 中广核核电运营有限公司 Auxiliary adjusting device for thickness of boss of steam seal block and method for adjusting thickness of boss of steam seal block

Similar Documents

Publication Publication Date Title
GB1306575A (en) Segmented seal assembly for axial flow turbines
SE8008936L (en) TURBIN LEAD COVER SUSPENSION FOR GAS TURBINE ENGINES
EP0226444A3 (en) Variable nozzle turbocharger
CA1015665A (en) Axial flow turbine stationary blade and blade ring locking arrangement
GB731822A (en) Improvements relating to turbines or compressors for operation with gaseous fluids
HK1107587A1 (en) Improved brush-seal designs for turbines and similar rotary apparatus
GB1506360A (en) Ceramic turbine structures
GB1241358A (en) Static seal structure
GB1491556A (en) Rotor blades for turbomachines
GB1504463A (en) Adjustable vane assembly for a gas turbine engine
ES441793A1 (en) Outer cylinder for a low pressure turbine apparatus
FR2324873A1 (en) Axial flow turbomachinery rotor - has turbine blade fixing ring which also acts as stage seal
FR2323007A1 (en) Turbine blade cooling by fluid leakage through void by blade root - has void wall, with inclined coutlet bore, radial to blade platform
NL7708556A (en) Turbine for compressible fluids - has two flow-paths after last stage but two created by circumferential baffles (NL 15.2.78)
JPS57153904A (en) Device for sealing up clearance of gas turbine
GB1335145A (en) Turbine casing for a gas turbine engine
FR2342440A1 (en) Face seal for rotating shaft - has collar with chain of blind holes connected by grooves to increase resistance to flow
GB1318167A (en) Inlet structure for turbo machine
GB1391166A (en) Axial flow turbine
GB1454861A (en) Reversible turbine assemblies
JPS5741407A (en) Sealing mechanism on top of turbine rotor blade
GB649792A (en) Improvements in or relating to seals for rotors of turbines and like fluid flow machines
GB897907A (en) Hydraulic machines for hydraulic storage power stations
GB844020A (en) Stator vane assemblies for axial-flow compressors and turbines
GB1508364A (en) Axial-flow turbines