GB697285A - Improvements in or relating to centrifugal compressors - Google Patents

Improvements in or relating to centrifugal compressors

Info

Publication number
GB697285A
GB697285A GB682750A GB682750A GB697285A GB 697285 A GB697285 A GB 697285A GB 682750 A GB682750 A GB 682750A GB 682750 A GB682750 A GB 682750A GB 697285 A GB697285 A GB 697285A
Authority
GB
United Kingdom
Prior art keywords
impeller
rotor
eye
driven
centrifugal
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
GB682750A
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.)
Bristol Siddeley Engines Ltd
Original Assignee
De Havilland Engine Co 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 De Havilland Engine Co Ltd filed Critical De Havilland Engine Co Ltd
Priority to GB682750A priority Critical patent/GB697285A/en
Publication of GB697285A publication Critical patent/GB697285A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/025—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal comprising axial flow and radial flow stages

Abstract

697,285. Centrifugal compressors; gas turbine plant DE HAVILLAND ENGINE CO., Ltd., HALFORD, F. B., and COCKBURN, D. M., June 18, 1951 [March 20, 1950], No. 6827/50. Classes 110(i) and 110(iii). In a centrifugal compressor, pre-whirl ahead of the centrifugal impeller is imparted by an axialflow rotor arranged coaxially with and appreciably displaced from the impeller eye and driven in the same direction as but at a lower speed than the impeller, the ring of rotor blades having a mean diameter appreciably greater than that of the eye and extending across an annular entry passage of which the diameter progressively diminishes towards the eye. In the compressor shown in Fig. 1, forming part of a gas turbine plant, the pre-whirl rotor F is carried by a shaft K which is driven through epicyclic gearing L by shaft J connected to the centrifugal impeller C, so as to rotate at about half the speed of the impeller. A part G<SP>4</SP> of the inner wall of the annular entry passage is attached to the rotor F so as to rotate therewith, but may instead be free to rotate under the rotational drag of the air, which preferably flows in a substantially free vortex in this region. The distance between the point D<SP>1</SP> and the entry to the eye of the impeller may be equal to ¢ to ¥ of the diameter of the eye. The entry edges C<SP>5</SP> of the impeller blades may be rearwardly inclined as shown and/or curved forwardly in the direction of rotation. In an alternative construction, the impeller C is driven by the first stage rotor of the gas turbine, while the rotor F is driven by the second stage rotor. The driving shaft of the rotor F passes through the hollow driving shaft of the impeller C. Specification 628,052 is referred to.
GB682750A 1950-03-20 1950-03-20 Improvements in or relating to centrifugal compressors Expired GB697285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB682750A GB697285A (en) 1950-03-20 1950-03-20 Improvements in or relating to centrifugal compressors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB682750A GB697285A (en) 1950-03-20 1950-03-20 Improvements in or relating to centrifugal compressors

Publications (1)

Publication Number Publication Date
GB697285A true GB697285A (en) 1953-09-16

Family

ID=9821478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB682750A Expired GB697285A (en) 1950-03-20 1950-03-20 Improvements in or relating to centrifugal compressors

Country Status (1)

Country Link
GB (1) GB697285A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127865A (en) * 1960-12-23 1964-04-07 Pleuger Friedrich Wilhelm Propulsion units for watercraft
US3155044A (en) * 1960-04-12 1964-11-03 United Aircraft Corp Pump inducers
US3357176A (en) * 1965-09-22 1967-12-12 Williams Res Corp Twin spool gas turbine engine with axial and centrifugal compressors
US4155684A (en) * 1975-10-17 1979-05-22 Bbc Brown Boveri & Company Limited Two-stage exhaust-gas turbocharger
GB2169355A (en) * 1984-11-29 1986-07-09 Volvo Penta Ab Rotor system, particularly for propelling a boat
CN114207286A (en) * 2019-08-07 2022-03-18 开利公司 Axial and downstream compressor assembly
CN114370433A (en) * 2021-12-20 2022-04-19 中国北方发动机研究所(天津) Compressor with variable air inlet prerotation generator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155044A (en) * 1960-04-12 1964-11-03 United Aircraft Corp Pump inducers
US3127865A (en) * 1960-12-23 1964-04-07 Pleuger Friedrich Wilhelm Propulsion units for watercraft
US3357176A (en) * 1965-09-22 1967-12-12 Williams Res Corp Twin spool gas turbine engine with axial and centrifugal compressors
US4155684A (en) * 1975-10-17 1979-05-22 Bbc Brown Boveri & Company Limited Two-stage exhaust-gas turbocharger
GB2169355A (en) * 1984-11-29 1986-07-09 Volvo Penta Ab Rotor system, particularly for propelling a boat
AU581703B2 (en) * 1984-11-29 1989-03-02 Ab Volvo Penta Rotor system, particularly a boat propeller system
CN114207286A (en) * 2019-08-07 2022-03-18 开利公司 Axial and downstream compressor assembly
CN114370433A (en) * 2021-12-20 2022-04-19 中国北方发动机研究所(天津) Compressor with variable air inlet prerotation generator

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