US764450A - Turbine-bucket cover. - Google Patents

Turbine-bucket cover. Download PDF

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Publication number
US764450A
US764450A US18578303A US1903185783A US764450A US 764450 A US764450 A US 764450A US 18578303 A US18578303 A US 18578303A US 1903185783 A US1903185783 A US 1903185783A US 764450 A US764450 A US 764450A
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United States
Prior art keywords
band
buckets
turbine
cover
bucket
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Expired - Lifetime
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US18578303A
Inventor
Henry Geisenhoener
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General Electric Co
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General Electric Co
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Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US18578303A priority Critical patent/US764450A/en
Application granted granted Critical
Publication of US764450A publication Critical patent/US764450A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/22Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/24Blade-to-blade connections, e.g. for damping vibrations using wire or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/22Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225Blade-to-blade connections, e.g. for damping vibrations by shrouding

Description

else l y M PATENTED JULY 5, 1904,

H GBISENHONER TURBINE BUCKET COVER.

APPLIOATIOH FILED 11150.19, 1903.

UNITED STATES Patented July 5, 1904.

PATENT OFFICE.

HENRY GEISENHONER, OF SCHENECTADY, NEVI YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEIV YORK.

TURBINE-BUCKET COVER.

SPECIFICATION forming part of Letters Patent No. 764,450, dated J uly 5, 1904.

Application filed December 19, 1903. $erlal No. 185,783. (No model.)

10 all whom it may concern:

Be it known that I, HENRY GEIsENHoNER, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Binding-Bands for Securing Turbine-Bucket Covers, of which the following is a specification.

The present invention relates to the means employed to secure bucket-covers in place, and has for its object to provide a simple and reliable means whereby the sections of the cover may be securely held in place.

In the accompanying drawings, which illustrate one embodiment of my invention, Figure 1 is a partial section of a bucket-wheel. Fig. 2 is a partial plan thereof. Fig. 3 is a detail view in cross-section, showing the relation of the tenons and the binding-band. Fig. 4 is a slight modification wherein two binding-bands are employed where special strength is required. Fig. 5 is a further modification Wherein the cross-section of the binding-band is circular instead of rectangular; and Fig. 6 is a further modification wherein a binding-band of circular cross-section is employed, which is wrapped around the wheel a number of times.

1 represents a support for the buckets and may be stationary or rotary, as desired. In the present instance the buckets 2 are formed integrally therewith and extend radially; but they may be made detachable and extending in any desired direction. The buckets are given any suitable form-such, for example, as that shown in Fig. 2 one face of the bucket being concave and the other convex. Formed integrally with the buckets is a tenon 3. In the present instance each of the buckets is shown as being provided with a tenon; but the tenons may be omitted from certain of the buckets, if desired.

4: represents a bucket-cover, which is preferably slightly wider than the buckets, so as to protect the sharpened edges. It is preferably made up in sections, and the line of division between the sections may coincide with a tenon, as indicated at 5, or it may pass between the tenons, as indicated at 6. In order to secure the cover-sections in place, a binding-band 7 is provided, which is rectangular in cross-section. The band may be made up in sections or it may be made, in a single piece. It will be found to be advantageous to make the joint between the bandseotions register with a tenon, as is indicated at 8, since such an arrangement serves to hold the adjacent ends of the band and prevent them from flying outward under centrifugal force. It is preferable to form the tenons with two projecting lugs or cars 9 and 10, which are afterward riveted over by suitable means to grip the band.

Referring to Fig. 3, the cover is shown as i being inclined slightly from left to right, so as to increase the cross-sectional area of the working passage between the buckets toward the exhaust. The binding-band 7 is shown in its normal position and held in place by the projecting lugsor ears 9 and 10.

Referring to Fig. 4, a slight modification of the invention is shown where two bindingbands 7 are employed, each of which is retained in place by lugs 9 and 10. In other respects the construction may be the same as that previously described.

In Fig. 5 is shown a slight modification wherein the section of the binding-band 7 is made circular instead of rectangular. In this case the lugs?) and 10 serve to hold the band in place, as before.

Referring to Fig. 6, a further modification is shown wherein the binding-band 7 is composed of wire of circular cross-section which is wrapped around the periphery of the wheel a number of times. In the present instance it is wrapped around four times. The tenon 3 on the bucket is made considerably longer (measured axially) than in the previous illustrations and is provided with as many grooves as there are turns of wire. After the wire is mounted in place under the proper tension the small projections 11 are riveted over. In this case, as well as those previously described, the bucket-cover should be made in sections, and the line of division between the sections may correspond to those described in connection with Fig. 2.

In accordance with the provisions of the patent statutes I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood thatthe apparatus shown is only illustrative and that the invention can be carried out by other means.

What I claim as new, and desire to secure I by Letters Patent of the United States, is-

1. In a turbine, the combination of buckets,

a cover for the buckets, and a binding-band ing-band which is held in place by riveting over the ends of the tenons.

5. In an elastic-fluid turbine,.the combination of a bucket wheel or support, a cover for the buckets, and a binding-band which holds the cover in place and encircles the wheel more than once.

6. In an elastic-fluid turbine, the combination of a wheel or support having a plurality of buckets, a tenon on each bucket, and a binding-band which is wrapped around the wheel more than once and is held in place by the tenons.

7 In an elastic-fluid turbine, comprising buckets having tenons, a cover for the buckets having openings which register with the tenons, in combination with a retaining device for the cover which is held in place by the tenons.

In witness whereof I have hereunto set my hand this 17th day of December, 1903.

HENRY GEISENHONER. Witnesses:

BENJAMIN B. HULL, HELEN ORFORD.

US18578303A 1903-12-19 1903-12-19 Turbine-bucket cover. Expired - Lifetime US764450A (en)

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US18578303A US764450A (en) 1903-12-19 1903-12-19 Turbine-bucket cover.

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658719A (en) * 1949-10-26 1953-11-10 So Called Cie Electro Mecaniqu Mounting and fixing of turbomachine fixed blades
US2952442A (en) * 1957-05-28 1960-09-13 Studebaker Packard Corp Rotating shroud
US3338508A (en) * 1965-08-23 1967-08-29 Gen Motors Corp Axial-flow compressor
US4699569A (en) * 1985-07-05 1987-10-13 Bbc Brown, Boveri & Company, Limited Rotor blade ring of an axial flow turbomachine
FR2964427A1 (en) * 2010-09-06 2012-03-09 Messier Dowty Sa Cartridge of turbojet and turbojet receiving such carters
US20140205463A1 (en) * 2011-05-13 2014-07-24 Snecma Turbine Engine Rotor Including Blade Made of Composite Material and Having an Added Root
EP3112615A1 (en) * 2015-06-29 2017-01-04 United Technologies Corporation Cantilevered stator vane and stator assembly for a rotary machine
US10364703B2 (en) * 2013-11-14 2019-07-30 Safran Aircraft Engines Annular element of a turbomachine casing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658719A (en) * 1949-10-26 1953-11-10 So Called Cie Electro Mecaniqu Mounting and fixing of turbomachine fixed blades
US2952442A (en) * 1957-05-28 1960-09-13 Studebaker Packard Corp Rotating shroud
US3338508A (en) * 1965-08-23 1967-08-29 Gen Motors Corp Axial-flow compressor
US4699569A (en) * 1985-07-05 1987-10-13 Bbc Brown, Boveri & Company, Limited Rotor blade ring of an axial flow turbomachine
FR2964427A1 (en) * 2010-09-06 2012-03-09 Messier Dowty Sa Cartridge of turbojet and turbojet receiving such carters
WO2012032017A1 (en) * 2010-09-06 2012-03-15 Messier-Bugatti-Dowty Turbojet casing and turbojet receiving such casings
US20140205463A1 (en) * 2011-05-13 2014-07-24 Snecma Turbine Engine Rotor Including Blade Made of Composite Material and Having an Added Root
US9790802B2 (en) * 2011-05-13 2017-10-17 Snecma Turbine engine rotor including blade made of composite material and having an added root
US10364703B2 (en) * 2013-11-14 2019-07-30 Safran Aircraft Engines Annular element of a turbomachine casing
EP3112615A1 (en) * 2015-06-29 2017-01-04 United Technologies Corporation Cantilevered stator vane and stator assembly for a rotary machine
US9869328B2 (en) 2015-06-29 2018-01-16 United Technologies Corporation Cantilevered stator vane and stator assembly for a rotary machine

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