GB528468A - Labyrinth packing for the shafts of steam turbines, compressors and the like - Google Patents

Labyrinth packing for the shafts of steam turbines, compressors and the like

Info

Publication number
GB528468A
GB528468A GB13689/39A GB1368939A GB528468A GB 528468 A GB528468 A GB 528468A GB 13689/39 A GB13689/39 A GB 13689/39A GB 1368939 A GB1368939 A GB 1368939A GB 528468 A GB528468 A GB 528468A
Authority
GB
United Kingdom
Prior art keywords
shaft
leakage
disc
discs
projecting
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
GB13689/39A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB528468A publication Critical patent/GB528468A/en
Expired 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
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type

Landscapes

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

Abstract

528,468. Stuffing-box substitutes. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. May 8, 1939, No. 13689. Convention date, June 1, 1938. [Class 122 (v)] In labyrinth packing for the shafts of steam turbines, compressors, &c, of the kind comprising annular discs 3, 4, 5 projecting from the shaft 1 and alternating with discs 6, 7, 8 projecting from a surrounding stationary wall 2, the discs being provided with axially extending sleeveshaped projections 9, which enter between each other, the leaking medium passing along the shaft is prevented from escaping into the atmosphere, and is united with the leakage escaping through the labyrinth, which is normally passed to a leakage condenser. The disc 5, which is the last reckoned in the direction of flow, is provided with a peripheral edge 10 projecting towards the hub of the disc 8, so as to form a throttling-point, and has radial channels 11,12 opening on either side thereof. The leakage along the shaft enters a space 14 between the shaft and the disc 5, and is mainly discharged through the channels 11, so as to mix with the leakage past the projections 9. The remainder, which leaks out at a radial packing-surface 15, is drawn out through the channel 12 by ejector-effect at the point 10.
GB13689/39A 1938-06-01 1939-05-08 Labyrinth packing for the shafts of steam turbines, compressors and the like Expired GB528468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE528468X 1938-06-01

Publications (1)

Publication Number Publication Date
GB528468A true GB528468A (en) 1940-10-30

Family

ID=20311322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13689/39A Expired GB528468A (en) 1938-06-01 1939-05-08 Labyrinth packing for the shafts of steam turbines, compressors and the like

Country Status (1)

Country Link
GB (1) GB528468A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043521A1 (en) * 1996-05-15 1997-11-20 Siemens Aktiengesellschaft Seal arrangement and steam turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043521A1 (en) * 1996-05-15 1997-11-20 Siemens Aktiengesellschaft Seal arrangement and steam turbine

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