US1641362A

US1641362A - Wearing plate for hydraulic machines

Info

Publication number: US1641362A
Application number: US113908A
Authority: US
Inventors: William M White
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-06-05
Filing date: 1926-06-05
Publication date: 1927-09-06
Anticipated expiration: 1944-09-06

Description

Sept. 6 1927.

' W. M. WHITE WEARING PLATE FOR HYDRAULIC MACHINES Filed Ju ne 5, 1926 I Patented Sept 6, 1927.

' UNITED STATES PATENT OFFICE.

WILLIAM M. WHITE, OF MILWAUKEE, WISCONSIN.

WEARING PLATE FOR HYDRAULIC MACHINES.

Application filed June 5,

proved method of securely fastening liner plates in place, and for effecting convenient removal thereof when replacement becomes desirable. A'further object of the invention is to provide improved wear plates for the inlet casings of hydraulic turbines of the type wherein the water is delivered toward the rotor past an annular series of adjustable guidevanes. These and other objects and advantages of the invention will be apparent from the following description.

A clear conception of an embodiment of the invention and of the mode of applying and removing wear plates constructed in accordance therewith, may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar parts in the several views.

Fig. 1 is a fragmentary central verticalsection through a hydraulic turbine having the improved lining plates applied therein.

Fig. 2 is a horizontal section through the casing of 'the turbine disclosed in Fig. 1, the section being taken along the line II-II of Fig. 1 looking downwardly.

Fig. 3 is a fragmentary sectional View showing details of the improved lining ring fastening.

' The hydraulic turbine to which the invention has been applied by way of illustration, comprises in general a rotor 2 consisting of an annular series of vanes secured to a central hub and surrounded by a shroud ring 4; a casing comprising an upper element 11,a lower element 12 and a speed ring 7 enclosing the turbine rotor 2; an annular series of adjustable inlet guide vanes 8 having pivots 9, 10 journalled in the casing elements 11, 12 respectively; and a main shaft 5 secured to the rotor 2 and coacting with a guide bearing 6 associated with the turbine'oasing. The adjustable inlet guide vanes "8 are simultaneously movable. by.

the rotor 2, to

1926. Serial No. 113,908.

means of mechanism associated with actuating arms 17 secured to the upper pivots 9, and the vanes 8 are 'swingable about the pivots 9, 10 to control the flow of fluid from the speed ring 7 to the rotor 2.

The hub ofthe rotor 2 has an annular flange 3 extending away from the rotor axis and 1n close proximity to the upper casing element 11. The 'casing'element 11 is provided with an annular recess 20 which coacts with an annular series of segmental plane wearing plates 13, these wearing plates be ing penetrated by the upper vane pivots 9.

An annular series of segmental curved retainer plates 15 coact with the inner edges of the wear plates 13 and extend in close proximity to the periphery of the flange 3' thereby providing a runnlng joint.

The rotor shroud ring 4 is provided with a peripheral Wearing ring 22 extending "in 7 close proximity to the lower casing element 12. The casing element 12 is provided'with an annular recess 21 which coacts with an annular series of segmental plane wearing plates 14 through which the lower vane pivots 10 extend. An annular series of segmental curved retainer plates 16 coact with the inner edges of the wear plates 14 and co operate with the rotor wearing ring 22 to provide a running joint.

The segment shaped

plane wear plates

13, 14 are forced into the

recesses

20, 21 respec-' tively, by means of a radial wedge 19 as shown in Fig. 2, the wedge 19 being held in place by the overlapping edges of the adj

acent wear plates

13, 14 as indicated by the dotted lines. The wedge 19. is driven'outwardly between the ends of adjacent seg- 11161113 thereby urgingthe wear plates into the annular recess of the adjacent'casingelement.1 The segmental

curved retainer plates

15, 16 are formed with wedge surfaces en 7 gageable with similar surfaces formed upon the inner edges of the

wear plates

13, 14, and the

retainer plates

15, 16 are rigidly attached to the adjacent casing elements 11, 12'by means of screws 18 as shown in Fig. 3. I The

liner plates

13, 14 are held'in place solely by the overlapping portions of the casing elementsll, 12 and of the retainer plates 15, 16', and obviously cooperate with the end surfaces of the movable guide vanesS, while the

liner plates

15, 16 cooperate with the movable fla'nge 3 and wearing ring. 22 of surfaces.

protect all of the wearable guide vanes 8.

wear takes place between the ends of the vanes 8 and the adjacent casing elements, and this wear is taken up by the

removable lining plates

13, 14. Due to rotation of the rotor 2, considerable wear also takes place betweenthe rotor flange 8 and wearing ring 22 and. the adjacent caslng elements. This wear is taken up by the

removable lining plates

15, 16 cooperatingwith the flange 3 and with the ring 22 respectively.

As the

lining plates

13, 14,, 15, 16 may eventually wear to, such an extent that re placement thereof becomes desirable, these plates may readilybe removed by separating the casing elements 11, 12 and removing the After the guide vanes 8 have been removed, the

segmental plates

15, 16 may be removed by releasing the screws 18. When the

plates

15, 16 have been withdrawn the wedge 19 may be withdrawn, whereupon the plates 13,1 are freely removable from Within the retaining;

recesses

20, 21. The mode of assembling the struc ture may be effected by reversing thesteps of removal, and both removal and assemblage may obviously be quickly effected with minimum delay in operation of the turbine unit. 7

It should be understood that it is not de sired to limit the invention to the exact details of construction and to the precise mode of applying and of removing the improved liner plates, for various modifications within the scope of the claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a rotor, a casing form ing a fluid conducting conduit communicating with said rotor, an annular series of segment shaped plates providing a lining for said casing adjacent to said conduit, and means cooperable with the adjacent ends of two of said plates for forcing adjoining ends of other ofrsaid plates into intimate contact with each other.

catin'g with said rotor, an annular series of segment shaped plane plates providing a lining for said casing extending parallelto said conduit, and an annular series of segment shaped curved plates coacting with the edges of said plane plates and extending laterally away from said conduit.

5. In combination, a rotor, a'casing forming a fluid conducting conduit extending transversely of the axis of and'communicating with said rotor, an anriularseriesof segment shaped plane plates having outer edgesdisposed within a recess of said casing and providing a lining therefor adjacent to said'conduit, means for forcing-the adjoining ends, of said segments into intimate contact with each other, and an annular series of segment shapedcurved plates coacting with the inner edges of said plane plates and extending laterally, away from said conduit. j I

6. In combination, a roto'r,'a casing forming a fluid conducting conduit communicating with said rotor, an annular series of guide vanes spanning said conduit,.'an annular series of segment shaped plates providing'a lining for said casing'adjacentto the corresponding ends of said vanes, and means cooperable with the adjacent ends of two of said plates for forcing the adjoining ends of other of said plates into intimate contact with each other.

7. In combination, arotor, a casing forming a fluid conducting conduit communicating with said rotor, an annular series of guide vanes spanning said conduit,annular series of'segmental shaped plates providing linings for saidcasing adjacent to the opposite ends of said vanes, and a' wedge for forcing the adjoining ends of said-plates into intimate contact with each other;

8. In combination, a rotor, a'casing forming a fluid conducting conduit communicating with said rotor, said casing having an annular recess therein, a series offsegment shaped plates coacting with said recess and providing a lining for said casing, I and means cooperable with the adjacent ends of two of said plates for forcing theradjoining ends of other ofsaid platesinto intimate contact witheach other and with said casing recess.

9. In combination, a ,rotor, a casingrforming a fluid conducting conduit communicatmg wlth said rotor, sald casmg having an annular recess therein, an annular series of segment shaped wearlng plates extending into sald .recess and provldlng a lining for said casing, means for forcing the adjoiningends of said plates into intimate contact with each other, an annular series of segment shaped curved plates formed to retain said wearing plates in coaction with said recess, and means for attaching said curved plates to said casing.

10. In combination, a casing having an annular recess therein, a series of wear plates coacting with said casing recess, and means for applying endwise pressure to some of said plates to force said series into intimate contact with said recess.

11. In combination, a rotor, a casing forming a fluid conducting conduit communicating with said rotor and having an annular undercut recess therein, an annular series of wearing plates providing a lining for said casing and having outer edge portions extending into said recess, and an annular series of retaining plates having wedge surfaces cooperable with the inner edge portions of said wearing plates to retain said wearing plates in position.

12. In combination, a casing having an annular undercut surface forming a recess therein, a series of wearing plates having outer surfaces coacting with the undercut surfaces of said casing recess, and means for forcing some of said plates apart to retain said plate and casing surfaces in engagement with each other.

In testimony whereof, the signature of the inventor is affixed hereto.

WILLIAM M. WHITE.