US867407A

US867407A - Turbine-wheel.

Info

Publication number: US867407A
Application number: US2?173605A
Authority: US
Inventors: Johann Friedrich Max Patitz
Original assignee: Allis Chalmers Corp
Current assignee: Allis Chalmers Corp
Publication date: 1907-10-01
Anticipated expiration: 1924-10-01

Description

Nofsemov. V PATENTVBJD OCT. 1, 1907.

Y J. P. M. PATITZ.

TURBINE WHEEL. APPLICATION FILED 001 .10, 1003. RENEWED MAR. 24, 1005.

UNITED STATES PATENT OFFICE.

JOHANN FRIEDRlCH MAX PATITZ, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS GHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

' TURBINE-WHEEL.

' Patented. Oct'.1,1907.

Application filed October 19,1903,$eria1 No. 177,668. Renewed arch 24, 1905. Serial No. 251,736.

To all whom itmay concern:

Be it known that I, J OHANN FRIEDRICH Max Pnrrrz, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, 5 have invented a new and useful Turbine-Wheel, of

which the following is a specification.

Myinvention relates to steam turbine wheels. The object of the invention is to produce a wheel which shall possess great strength combined with minimum weight, which is easilyassembled, whose vanes are so arranged that they can be readily inserted and rigidly attached, and whose steam passages are of the proper shape to give the best efficiency. Other; objects of the invention will appear from the following description taken in connection with the; accompanying drawing, formingpart of the specification, in which:' i

' Figure l'is a face view of the wheel, part of the rim being broken away to show the vanes. Fig. 2 is a crosssection on the line :i: a: of Fig. I. Fig. 3 is aperspective view of one of the vanes. Fig. 4 is an enlarged crosssection on the line 3 y of'Fig. '3. i i i Referring to the drawing, the wheel proper consists .of the cast hub land the steel side'plates 2 and 3, which 7.5 are united to tilde hubby rivets. These side plates are let into the projecting flange of the hub so that they are flush with its outer surface, thuspres'enting a smooth unbroken suriac'e for both faces of thewheel. The

vanes 4 are held between the two side plates. flhe plate 3 has large openings 5, which permit the steam,

after having passed radillly wards the center through the va'nes, to freely pass to the next wheel chamber on the left, of Fig. 2. Smaller'openings 6, ate provided in the plate 2, in order to allow steam to to the right hand side of the wheel also, so as to.insure balance of pressure on both sides of the wheel. The vane 4 is formed in one piece with. itsiastening rivets Q4, and

- be either drop-forged or cast. The front and rear laces of the vanes4", 4, are given the proper outline 40v for the passage of the-steam.

Endflanges 4 4 are provided carrying the integral rivets 4 4. These flanges are beveled outwardly as to steam flow inorder to provide a passagelforthe steam which is flaring or gradually increasing in cross-section towards the 'centerof the wheel. The purpose-of this construction is to provide a free passage'for the steam. The cross-section in anaxial direction of theenterip jet is determined by the space between the thicker" portions of the flanges 4. the steam-flows the circumference towards the center of thet'ihfi, the

transverse distance across the passage graduailyj diininislies because of the diminishing. radius. fIn'order,

, therefore, to permit the jet to pass out between this vanes freely and without interference with the next following jet, or the formation of whirls, the passage is increased axial and made flaring, as shown, thus allowing the'jet toexpand axially.

Having thus described my invention, what I claim s 1. A turbine-vane provided with flanges at the vane ends extending .beyond the concave side of the vane, said flanges being beveled outwardly as to steam flow, and being provided with fastening means for the vanes, substantially as described. I

2. A turbine vanepflanges at the vane ends extending beyond the concave side of the vane, and pins on the flanges for fastening the'vane.

3. A turbine vane provided with flanges at the vane ends extending beyond the concave side of the.vane, said flanges being beveled outwardly as to steam flow and fastening means on the flanges for holding the vane.

4. A turbine wheel. consisting of a hub and two side plates and vanes inserted between the plates and fastened thereto,- said vanes consisting of a central curved part,-.end flanges extending to the outer lines of the curved part, beveled portions'on the flanges affording increasing cross section of steam passage, and fastening means on the flanges and co-actIngwith the side plates of the wheel.

5. t turbine wheel comprising a hub, side .plates attached to said hub, and flanged vanes rigidly held between the side plates the flanges being formed to provide nozzle passages between the vanesr 6. A wheel including annular'sidc plates, a hub upon which the plates are mounted, and vanes peripherally mounted between the side plates, the plates being ported -for exhaust and for balancing.

7. The combination with a turbine shaft, of a turbine running wheel having an interior cavity and apertures in both side walls communicating with the exterior at the sides of said wheel. and between thev shaft and the periphery ofthe wheel siid wheel being provided with peripheral vanes arranged-for the inward delivery of motive fluid to said cavity, and the interior wall-faces' ofsaidcavity being substantially parallel.

8. The combination with a turbine shaft. of a-turbine running wheel having an interior cavity and apertures in both side walls communicating with'tl e. exterior at the sides ofsaid wheel and between the shaft and the periphery of the wheel; said'wheei being provided with periph eral vanes arranged for the inward delivery -of motive fluid to said cavitm and the lnterior'wull faces of said cavity being substantially parallel adjacent to the vanes.

' 9. The combination with a turbine shaft. of a turbine running wheel comprising parallel side disks: vanes interposed between the peripheral portions of said disks; and nozzles arranged for the inward delivery of motive fluid to the-vanes and .theinterlor'sp'ace between said disks; said disks" heingboth provided with apertures, of greater capacity than the capacity of the nozzles.

' In testimony whereot'I have signed mynmne to this specification in the presence of two subscribing witnesses.

JOHANN-FRIEDRICH MAX PATITZ.