US2396159A - Elastic fluid turbine - Google Patents

Elastic fluid turbine Download PDF

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Publication number
US2396159A
US2396159A US494638A US49463843A US2396159A US 2396159 A US2396159 A US 2396159A US 494638 A US494638 A US 494638A US 49463843 A US49463843 A US 49463843A US 2396159 A US2396159 A US 2396159A
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US
United States
Prior art keywords
blades
turbine
steam
astern
elastic fluid
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 - Lifetime
Application number
US494638A
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English (en)
Inventor
Cook Stanley Smith
Douglas Louis Mortimer
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.)
PARSONS MARINE STEAM TURBINE
PARSONS MARINE STEAM TURBINE COMPANY Ltd
Original Assignee
PARSONS MARINE STEAM TURBINE
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Publication of US2396159A publication Critical patent/US2396159A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • F01D13/00—Combinations of two or more machines or engines
    • F01D13/006—Combinations of two or more machines or engines one being a reverse turbine

Definitions

  • This invention relates to elastic fluid turbines of the kind comprising parallel-flow co-axial a1-' ternatively oppositely rotatingturbines, the flow of elastic fluid taking place axially through each turbine toward the other turbine to enter a common exhaust chamber disposed between the turbines.
  • Figure l is a longitudinal sectional view of part of a steam turbine embodying the present invention in one form, and V Figure 2 is a developed plan thereof.
  • the steam leaving blades K is, in t the tangential plane, turned in the direction h with'a substantial component in the direction of astern rotation so that the portion represented by x which impingesupon the ahead rotor blades D will have a turning effect and actually increase the astern power over that developed in the normal astern blades.
  • the area through the final moving row of blades of the astern turbine is insuflicient to accommodate expansion down to the pressure in the exhaust chamber, and the steam consequently leaves these blades at a higher pressure, the further expansion to the exhaust pressure taking place in the exhaust chamber itself, after leaving the blades.
  • the blades K are so designed that the areas for steam flow through the blade passages are such that the passage of the steam through them does not cause any, or any substantial, increase in the pressure of the steam leaving blades C.
  • the object of the ducts P is to ventilate this space between the blades C and K when running ahead, the blades C acting as a centrifugal pump to draw a cooling stream of steam over the blades, which steam can escape into the exhaust belt through the ducts P.
  • An elastic fluid turbine of the kind comprising paralle1-flow co-axial alternatively oppositely rotating turbines, the fiow of elastic fluid taking place axially through each turbine towards the other turbine to enter a common exhaust chamber disposed between th turbines, said turbine having exhaust guiding blades between the common exhaust chamber and the last row of astern moving blades and including deflecting devices thereon having exhaust guiding surfaces to direct the astern exhaust steam with axial, radial and circumferential components against at least a portion of the last row of forward moving blades in a direction to give an additional turning efiect to the rotor in the astern direction.
  • An elastic fluid turbine of the kind comprising parallel-flow co-axial alternately oppositely rotating turbines, the flow of elastic fluid taking place axially through each turbine towards the other turbine to enter a common exhaust chamber disposed between the turbines, having a row of fixed blades immediately succeeding in the direction of flow the last row of astern moving blades and wherein the space separating the said row of fixed blades from the last row of moving blades on the astern turbine is furnished with ducts serving to ventilate the space when the ahead turbine is in operative rotation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
US494638A 1942-07-30 1943-07-14 Elastic fluid turbine Expired - Lifetime US2396159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2396159X 1942-07-30

Publications (1)

Publication Number Publication Date
US2396159A true US2396159A (en) 1946-03-05

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ID=10905704

Family Applications (1)

Application Number Title Priority Date Filing Date
US494638A Expired - Lifetime US2396159A (en) 1942-07-30 1943-07-14 Elastic fluid turbine

Country Status (3)

Country Link
US (1) US2396159A (ru)
FR (1) FR924454A (ru)
NL (1) NL69939C (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881872A (en) * 1987-06-26 1989-11-21 Bbc Brown Boveri Ag Steam turbine for part load operation
US11603794B2 (en) * 2015-12-30 2023-03-14 Leonard Morgensen Andersen Method and apparatus for increasing useful energy/thrust of a gas turbine engine by one or more rotating fluid moving (agitator) pieces due to formation of a defined steam region

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881872A (en) * 1987-06-26 1989-11-21 Bbc Brown Boveri Ag Steam turbine for part load operation
US11603794B2 (en) * 2015-12-30 2023-03-14 Leonard Morgensen Andersen Method and apparatus for increasing useful energy/thrust of a gas turbine engine by one or more rotating fluid moving (agitator) pieces due to formation of a defined steam region

Also Published As

Publication number Publication date
NL69939C (ru)
FR924454A (fr) 1947-08-06

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