GB1160201A - Turbine-Driven Character With Variable Area Diffuser - Google Patents

Turbine-Driven Character With Variable Area Diffuser

Info

Publication number
GB1160201A
GB1160201A GB5144/68A GB514468A GB1160201A GB 1160201 A GB1160201 A GB 1160201A GB 5144/68 A GB5144/68 A GB 5144/68A GB 514468 A GB514468 A GB 514468A GB 1160201 A GB1160201 A GB 1160201A
Authority
GB
United Kingdom
Prior art keywords
diffuser
wall
bellows
velocity
width
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
GB5144/68A
Inventor
Donald John Waldman
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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
Priority to US529477A priority Critical patent/US3391859A/en
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to GB5144/68A priority patent/GB1160201A/en
Priority to FR139130A priority patent/FR1554254A/fr
Priority to BE710539A priority patent/BE710539A/xx
Priority to DE1968C0044675 priority patent/DE1601348A1/en
Publication of GB1160201A publication Critical patent/GB1160201A/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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/143—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path the shiftable member being a wall, or part thereof of a radial diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Supercharger (AREA)

Abstract

1,160,201. Centrifugal compressors. CATERPILLAR TRACTOR CO. Feb. 1, 1968, No. 5144/68. Heading F1C. In a turbine-driven charger comprising spaced annular substantially parallel walls defining a diffuser area surrounding the rotor, at least one of the walls is supported for movement towards and away from the other, means mounted in the diffuser area and responsive to velocity of air passing through the diffuser being provided to adjust the position of the movable wall and thereby vary the cross-sectional area of the diffuser. Fig. 1 shows a charger for an I. C. engine, comprising an exhaust-gas turbine 11 driving a centrifugal compressor 12. An annular wall 24 is supported by an annular bellows 28 so as to be movable axially relative to a fixed annular wall 23 to vary the width of the diffuser passage 22. When the speed of the I. C. engine is low and the velocity of air passing through the diffuser passage 22 is consequently low, the resiliency of the bellows 28 tends to hold the wall 24 in a position in which the width of the diffuser passage 22 is a minimum. This prevents compressor surge at low engine speeds. At higher engine speeds the velocity of the air passing around aerofoils 30, Figs. 1, 2 and 3, is high enough to produce a sufficiently low pressure area downstream of each aerofoil to cause withdrawal of air from the interior of the bellows 28 via passages 29. The resultant partial collapse of the bellows 28 causes the wall 24 to recede from the wall 23 to increase the width of the diffuser passage 22.
GB5144/68A 1966-02-23 1968-02-01 Turbine-Driven Character With Variable Area Diffuser Expired GB1160201A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US529477A US3391859A (en) 1966-02-23 1966-02-23 Turbocharger compressor with variable area diffuser
GB5144/68A GB1160201A (en) 1968-02-01 1968-02-01 Turbine-Driven Character With Variable Area Diffuser
FR139130A FR1554254A (en) 1968-02-01 1968-02-08
BE710539A BE710539A (en) 1968-02-01 1968-02-08
DE1968C0044675 DE1601348A1 (en) 1968-02-01 1968-02-20 Turbocharger compressor with a diffuser with a variable cross-sectional area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5144/68A GB1160201A (en) 1968-02-01 1968-02-01 Turbine-Driven Character With Variable Area Diffuser

Publications (1)

Publication Number Publication Date
GB1160201A true GB1160201A (en) 1969-08-06

Family

ID=9790538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5144/68A Expired GB1160201A (en) 1966-02-23 1968-02-01 Turbine-Driven Character With Variable Area Diffuser

Country Status (4)

Country Link
BE (1) BE710539A (en)
DE (1) DE1601348A1 (en)
FR (1) FR1554254A (en)
GB (1) GB1160201A (en)

Also Published As

Publication number Publication date
BE710539A (en) 1968-06-17
DE1601348A1 (en) 1970-11-19
FR1554254A (en) 1969-01-17

Similar Documents

Publication Publication Date Title
GB1534000A (en) Turbine vane cooling
GB1135129A (en) Gas turbine engine
GB1324790A (en) Gas turbine engine compressors
GB1006147A (en) Centrifugal gas compressors
GB1217807A (en) Gas turbine engine
GB1251312A (en)
GB1319348A (en) Dump bleed system in the compressor of a gas turbine engine
GB1479149A (en) Variable pitch ducted fan gas turbine power plant
GB1321657A (en) Ducted fan gas turbine jet propulsion engine
GB695519A (en) Wind turbines
GB1256486A (en)
GB1252193A (en)
GB1156093A (en) Improvements in Fans for Moving Working Fluid Through a Duct.
FR1554254A (en)
US2974857A (en) Air compressor with axial and radialflow stages
GB1117266A (en) Supersonic intake for a jet propulsion engine
GB1067129A (en) Improvements relating to the silencing of gas turbine engines
GB947690A (en) Turbine control
GB1424552A (en) Inlet structure for turbine
GB1242534A (en) Bladed fluid flow machine
GB586573A (en) Improvements in or relating to internal combustion turbine plant
GB1055380A (en) Gas turbine engine
GB1028444A (en) Compressor for a gas turbine engine
GB1111616A (en) Improvements in or relating to centrifugal compressors
GB704936A (en) Improvements in or relating to multi-stage axial-flow compressors

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees