GB1138607A - Shroud seal for hydraulic turbines, pumps and like machines - Google Patents

Shroud seal for hydraulic turbines, pumps and like machines

Info

Publication number
GB1138607A
GB1138607A GB8170/65A GB817065A GB1138607A GB 1138607 A GB1138607 A GB 1138607A GB 8170/65 A GB8170/65 A GB 8170/65A GB 817065 A GB817065 A GB 817065A GB 1138607 A GB1138607 A GB 1138607A
Authority
GB
United Kingdom
Prior art keywords
seal
space
annular
shroud
liquid
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
Application number
GB8170/65A
Inventor
Paul Koeller
Johann Hans Lang
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.)
Dominion Engineering Works Ltd
Original Assignee
Dominion Engineering Works 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 Dominion Engineering Works Ltd filed Critical Dominion Engineering Works Ltd
Priority to GB8170/65A priority Critical patent/GB1138607A/en
Priority to CH267766A priority patent/CH451046A/en
Priority to SE2510/66A priority patent/SE319136B/xx
Publication of GB1138607A publication Critical patent/GB1138607A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/006—Sealing arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

1,138,607. Centrifugal pumps; hydraulic turbines. DOMINION ENG., WORKS Ltd. Feb. 23, 1966 [Feb. 25, 1965], No. 8170/65. Headings F1C and F1T In a hydraulic turbine, pump or pump-turbine in which fluid friction on the runner 14 is reduced by introducing a gas, such as air, through pipe 24 into an annular space 20 adjacent a shroud 17, a seal comprising an annular axial lip 37 extending from the shroud is provided at the radially outer portion of the space 20, the radially inner surface of the lip being formed so as to extend from the surface of the shroud and serving as a liquid-energizing surface within the space 20 for promoting toroidal circulation of sealing liquid and producing centrifugal separation between the liquid and gas adjacent the lip whereby a stable liquid-gas sealing interface is maintained in sealing relation with the space, and a portion 56 of the housing is provided adjacent the energizing surface with an annular surface which has radially within and axially overlaps the energizing surface so as to obstruct the flow of sealing liquid radially inwards from the seal. Similarly, an annular axial lip 38 is provided to form a seal for a aeration space 22 adjacent shroud 18, but a co-operating housing portion corresponding to the portion 56 is not provided since any water from the seal zone tends to drip off the housing and back into circulation with the sealing liquid. Leakage of air from the spaces 20, 22 towards the draft tube 15 is prevented by supplying water under pressure through pipes 33, 34 to annular seal spaces 26, 30 and to centrifugal separator flanges 29, 32. Further annular seal spaces 28, 31 are provided between the separator flanges 29, 32 and the spaces 20, 22.
GB8170/65A 1965-02-25 1965-02-25 Shroud seal for hydraulic turbines, pumps and like machines Expired GB1138607A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8170/65A GB1138607A (en) 1965-02-25 1965-02-25 Shroud seal for hydraulic turbines, pumps and like machines
CH267766A CH451046A (en) 1965-02-25 1966-02-24 Hydraulic rotary machine
SE2510/66A SE319136B (en) 1965-02-25 1966-02-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8170/65A GB1138607A (en) 1965-02-25 1965-02-25 Shroud seal for hydraulic turbines, pumps and like machines

Publications (1)

Publication Number Publication Date
GB1138607A true GB1138607A (en) 1969-01-01

Family

ID=9847152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8170/65A Expired GB1138607A (en) 1965-02-25 1965-02-25 Shroud seal for hydraulic turbines, pumps and like machines

Country Status (3)

Country Link
CH (1) CH451046A (en)
GB (1) GB1138607A (en)
SE (1) SE319136B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113719467A (en) * 2021-07-26 2021-11-30 江苏大学镇江流体工程装备技术研究院 Centrifugal pump combined seal with guard ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113719467A (en) * 2021-07-26 2021-11-30 江苏大学镇江流体工程装备技术研究院 Centrifugal pump combined seal with guard ring

Also Published As

Publication number Publication date
CH451046A (en) 1968-05-15
SE319136B (en) 1969-12-22

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