EP0097605A2 - Turbine à impulsion pour un fluide supersonique - Google Patents

Turbine à impulsion pour un fluide supersonique Download PDF

Info

Publication number
EP0097605A2
EP0097605A2 EP83630094A EP83630094A EP0097605A2 EP 0097605 A2 EP0097605 A2 EP 0097605A2 EP 83630094 A EP83630094 A EP 83630094A EP 83630094 A EP83630094 A EP 83630094A EP 0097605 A2 EP0097605 A2 EP 0097605A2
Authority
EP
European Patent Office
Prior art keywords
buckets
wheel
rim
blank
side portion
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
EP83630094A
Other languages
German (de)
English (en)
Other versions
EP0097605B1 (fr
EP0097605A3 (en
Inventor
Arthur James Miller
Thomas J. Elliott
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.)
Elliott Turbomachinery Ltd
Elliott Turbomachinery Co Inc
Original Assignee
Elliott Turbomachinery Ltd
Elliott Turbomachinery Co Inc
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 Elliott Turbomachinery Ltd, Elliott Turbomachinery Co Inc filed Critical Elliott Turbomachinery Ltd
Publication of EP0097605A2 publication Critical patent/EP0097605A2/fr
Publication of EP0097605A3 publication Critical patent/EP0097605A3/en
Application granted granted Critical
Publication of EP0097605B1 publication Critical patent/EP0097605B1/fr
Expired legal-status Critical Current

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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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/34—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
    • 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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines

Definitions

  • the buckets or blades of turbines are subject to wear or erosion due to a number of factors.
  • a steam turbine prime mover for example, the kinetic energy that is absorbed from the steam by the moving blades or buckets and delivered as shaft work to the device being driven results from the expansion of the steam into the heat of vaporization region resulting in a lowering in the quality of the steam.
  • the buckets or blades become more susceptible to erosion.
  • wet steam is generally associated with the last stages of a condensing steam turbine, the advent of developing geothermal power, and the use of saturated steam boilers for plant heating, for example, have resulted in the supplying of low quality saturated steam at the turbine inlet. Steam qualities ranging from 20% all the way to 100% are typical.
  • the blade erosion is also a function of the velocity and impingement angle of the moisture particles.
  • the numeral 10 generally designates the solid wheel of a turbine 100.
  • Wheel 10 is initially formed as a blank such as a forging.
  • the rim of the wheel 10 is preferably profiled by machining an arcuate groove 14 therein,. as is best seen in Figure 4.
  • the groove 14 forms a segment of an ellipse, since the buckets are wider than they are deep, so as to reduce the amount of material to be removed in a milling operation.
  • Labyrinth seal lands 12 are machined on the downstream face 11 of wheel 10.
  • the buckets 20 are then individually machined into the profiled groove 14 as by an end mill, by transverse milling or cutting.
  • the vertical extent of wall 24 increases from point A to points B which represent the greatest vertical extent and are the locations where the bight of wall 24 meets the outer rim diameter.
  • the arc BAB forms a portion of an ellipse since it is not parallel to bottom 22.
  • the vertical, extent of wall 24 reduces to zero at the ends of the crescent or points C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP19830630094 1982-06-21 1983-06-02 Turbine à impulsion pour un fluide supersonique Expired EP0097605B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39001482A 1982-06-21 1982-06-21
US390014 1995-02-17

Publications (3)

Publication Number Publication Date
EP0097605A2 true EP0097605A2 (fr) 1984-01-04
EP0097605A3 EP0097605A3 (en) 1984-10-10
EP0097605B1 EP0097605B1 (fr) 1987-08-19

Family

ID=23540689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830630094 Expired EP0097605B1 (fr) 1982-06-21 1983-06-02 Turbine à impulsion pour un fluide supersonique

Country Status (3)

Country Link
EP (1) EP0097605B1 (fr)
JP (1) JPS597701A (fr)
DE (1) DE3373119D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362836A1 (fr) * 1988-10-06 1990-04-11 B a r m a g AG Bobinoir
GB2270543A (en) * 1992-09-02 1994-03-16 John Kirby Turbines.
US5427499A (en) * 1992-09-02 1995-06-27 Kirby; John Turbines having depressions in the working members thereof
CN106368753A (zh) * 2016-11-18 2017-02-01 蔡述强 叶轮加压装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2581199Y2 (ja) * 1990-04-24 1998-09-21 村角工業 株式会社 医療検査用カセット

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE164340C (fr) *
FR349490A (fr) * 1904-12-23 1905-05-30 Maschb Actien Ges Union Procédé pour fraiser des poches en forme d'u dans les roues de turbines
US1965817A (en) * 1932-10-24 1934-07-10 Wessel Walter Turbine
GB1416442A (en) * 1972-03-15 1975-12-03 Secr Defence Turbomachinery
JPS4933022A (fr) * 1972-08-03 1974-03-26
US4295788A (en) * 1980-03-10 1981-10-20 Terry Corporation Turbine wheel and nozzle arrangement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362836A1 (fr) * 1988-10-06 1990-04-11 B a r m a g AG Bobinoir
US4932598A (en) * 1988-10-06 1990-06-12 Barmag Ag Yarn winding machine
GB2270543A (en) * 1992-09-02 1994-03-16 John Kirby Turbines.
US5427499A (en) * 1992-09-02 1995-06-27 Kirby; John Turbines having depressions in the working members thereof
CN106368753A (zh) * 2016-11-18 2017-02-01 蔡述强 叶轮加压装置

Also Published As

Publication number Publication date
JPS597701A (ja) 1984-01-14
EP0097605B1 (fr) 1987-08-19
EP0097605A3 (en) 1984-10-10
DE3373119D1 (en) 1987-09-24

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