US858800A

US858800A - Gate-moving mechanism for a series of turbines.

Info

Publication number: US858800A
Application number: US21437104A
Authority: US
Inventors: Francis Ellicott
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-06-27
Filing date: 1904-06-27
Publication date: 1907-07-02
Anticipated expiration: 1924-07-02

Description

GATE MOVING MEGHANISM POR A SERIES 0F TURBINES. APPLwA'rIoI FILED .man a1. 1904.

PATENTED JULY 2, 1907.

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APPLIOATION FILBDJUN-E 21, 1904.

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F. BLLIGDTT.

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' P. `BLLIcoTT. GATE MOVING MEGHANISM POR A SERIES 0F TURBINBS.

APPLICATION FILED JUNE 27, 1904.

6 SHEETS-SHEET 3 10.858.800 PATENTED JULY 2, 1907.

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, APPLIOATION FILED JUNE 27, 1904.

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' of Fig. 7 from one side; 4 is an auxiliary casing, cylindrical in form, and mounted axially of the first cy- UNITED STATES PATENT OFFICE.

GATE-MOVING MECHANISM FOR A SERIES OF TURBINES.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed June 27, 1904. Serial No. 214,371.

To all, whom it may concern:

Be it known that I, FRAN cis ELLICOTT, a citizen of the United States of America, and a resident of Baltimore county and State of Maryland, have invented, certain new and useful Improvements in Gate-Moving Mechanism for a Series of Turbines, of which the following is a specification.

My invention relates to the mounting of pairs of turbine water Wheels upon a common shaft within a casing in such a manner as to economize space and to concentrate the application and discharge of the water from the wheels.

My invention further relates to the mechanism for operating the gates of a pair of wheels simultaneously under the control of a speed governor.

Referring to the drawings: Figure 1 is a plan partially broken away and partially in section of my wheel case and the mounting of the two wheels. lFig. 2 is a front elevation of the end of the casing in which the wheels are mounted and on the head of which the governor mechanism is mounted showing the mounting of the governor. Fig. 3 is a vertical elevation ,of the opposite end of the casing. Fig. 4 is a horizontal section of the casing of the rear wheel showing the mode of connect ing and moving the gate. Fig. 5 is a rear elevation of the yoke of the gate moving mechanism of the rear wheel. Fig. 6 is a side elevation of the bracket carrying the guide for the gate moving mechanism of the rear wheel. Fig. 7 is a plan view partially in section, showing a series of turbine wheels controlled by a gate of a single wheel. Fig. 8 is a plan view of a series of turbine Wheels and their cross heads inclosed in a casing and the end of the casing connected directly to the intake.

Referring to Fig. 1, 1 is the main casing or penstock cylindrical in form and having domed ends which are connected together and held in place by tie-bolts 2-2;

3 is an intake which in the structure shown in Fig. 1

enters the casing 1 from one end, and in they structure lindrical casing, and having secured in each end of it the discharge end of the wheel casing of turbine water wheels 5-5 this cylinder constitutes the draft chest and discharges into the draft tube. The domes of the wheels are secured to the heads of external casing l. 6 is a draft tube,l connected to the draft-chest 4 and discharging the water which has passed through the wheels; 7 is the runner shaft journaled in bearings 15- 8-8a, the right hand bearing is outside of the casing 1 bearing 8 is inside the draft chest and bearing 8 inside of the penstock. The Wheels are mounted on the runner shaft with their discharge ends towards each other so that water entering the penstock 1 from the intake 3 will pass through the wheels into the draft chest 4 and thence be discharged through the draft tube 6. This` producesa compact, concentrated structure which is strong and economical. One of the wheels, that on the right hand end of the casing l, as viewed in Fig. 1, is connected to an automatic speed governor, so that the gate of the right hand wheel is caused to move under the influence of the governor to correspond with the changes of load. The gate of the left hand wheel is connected to the gate of the right hand wheel and is caused to move correspondingly with it under the inluen ce of the same governor. 9-9 are cylinders, one constructed upon the chute frame of each wheel case, within one of these cylinders there is a ring piston 10, connected to the gate 1l. in the construction of wheels using cylinder gates, it is customary to place on top of the chute ring a cylindrical dome 9 into which the cylindrical gate enters as it opens. In my construction of these wheels I use these domes to form a double-walled cylinder by placing another cylinder 9b concentric with the dome within it. This cylinder is provided with a flange projecting at right angles from its lower end which forms one of the heads of the cylinder. ln this cylinder I place a ring piston which is connected to the gate and by which it is moved, the cylinder gate passing up and down on the outside of the lower head of the cylinder. Connected to the piston 10 are a pair of rods 12-12, which pass through the cylinder head, which at that point is a part of the casing head, and on their external ends they are provided with racks 13-13, the teeth of which are oppositely disposed in the same horizontal plane. The water pressure is admitted to the opposite sides of the piston and its pressure controlled in any suitable or desired way, such for instance, as is shown in my Patent No.

664,394, dated Dec. 25, 1900.

Referring t0 Fig. 2: 14 is a pedestal mounted upon the support of the casing on which is located the bearing 15 of the runner shaft; on each side ofthe bracket 14 are mounted two brackets 16-16 through which pass the rods 13-13, and two other rods 17-17, and in each of which is journaled a vertical shaft carryingpinions 18-18, upon the upper end of each of the vertical shafts is a beveled gear 19 which meshes with a beveled gear 20 on a counter 0r cross shaft 21, which is journaled in bearings upon the upper ends of the bracket 16-16 the rods 17-17 are provided upon their forward ends, opposite the pinions 18, with racks 22-22, oppositely disposed; the brackets 16-16 are provided with adjustable blocks 13a-15"l and 22a-22L by means of which the racks 1313 and 22-22 are guided and held in` Referring to Fig. 4, which shows the rear gate in section; this gate has no piston because tht? gate is driven directly from the piston ot the first wheel; 24 is the gate of the rear Wheel and it is .connected by means of rods 25-25 to the yoke 23; 26w26 are brackets secured to the rear heads of the second Wheel and carry guides 27-27 upon them; 28-.28 are slides connected to the yoke 23 on the underside and engage the guides 27-27 so as to support and guide the yoke 23 as it reciprocates; the guides 27-27 are provided with bearing blocks and set screws so that the level of the yoke 23 may be accurately adjusted. Similar guides numbered 80, 8l, 82 and 83 are shown in Fig. 7 for guiding each of the cross heads, respectively. 29 Fig. 2 is the governor by means of which the speed of the Wheels is regulated. It is provided with centrifugal balls 29X, which control the position of a slide valve Within the chamber 29"` which according to its position opens the pipes 29c and 29(I leading'respectively from the opposite sides of the controller piston, either to pressure through the pipe 29 or to exhaust through the pipe 29f, so that the position -of the piston, and therefore the gate to which it is attached, is positively controlled by the governor.

In Fi 7, I have illustrated a series of turbine wheels operating in sets, and having their runners mounted on a common shalt and Vinclosed in a suitable casing, the gate of one ol the wheels being directly connected to an automatic governor7 the movement of this gate being transmitted to the gates of the other wheels in the series. 35, 3G, 37, and 38 indicate a series of water Wheels mounted on a common shaft 39, the gates of the

pair

35, 36, Working in opposite directions and discharging into a draft chest 40, while pair 37, 38, operate in opposite directions and discharge into a draft chest 4lA Each pair of Wheels are mounted to cooperate with the inner casings 42, inclosed in a casing 43. From the gate of; the Wheel 35 projects a pair of rods 44, which are fastened to a cross-head 45 provided With extensions 4G. A pair of like rods 47., also project from the gate ot the wheel 37, and they are likewise connected to a crosshead 48 provided With extensions 49. Rods 50 project from the gate of the Wheel 36 and they in turn are connected to a cross-head 5l having extensions 52, and similar rods 53 project from the gate of wheel 38 and are connected to a cross-head 54 having extensions 55. The cross-head 45 is connected to the cross-head 48 by parallel rods 56 which extend through the guides of the extension 52 and at their outer ends, these rods have teeth 57. Any motion given either of these crossheads, it Will be noted, Will be reflected to the other, making the movement of the gate of Wheel 35 exactly the same as thatof the gate of the corresponding Wheel 37 in the opposite set. The cross-head 5l is connected to the cross-head 54, by parallel rods 55/, the latter extending through the guides of the extensions 49 and 4G and one of the casings 42, and 43, and are provided at their outer ends With teeth 58. The teeth ot these rods are in alinement with the teeth 57, and mesh With pinions 18, Fig. 2, the operation and connections of which have hereinb efore been referred to. it possible to mount any number of Wheels in pairs upon a common shaft and govern all Wheels uniformly and synchronously With a single automatic governor.

By the construction disclosed in Fig. 8, the Whole mechanism is inclosed Within a casing l, except the l connected to the intake.

This construction makes automatic governor, andtheendol' the casingisdirectly at 70. Such a. structure does away with a number ol stullng boxes, through which the various rods pass, as in Fig. 7, as it. is only necessary to provide stulling boxes for the rods counected directly with the governor, which reduces the liability of leakage to a minimum.

Having thus described my invention, what l claim and desire to secure by Letters Patent is:

1. The combination of two turbine water wheels having,r their runners mounted on a connnon shat't with discharge ends towards cach other, a cylinder constructed in the dome ot' one of the wheels 1nd provided with a piston which is connected to the gate of that wheel. and by which the gate is operated and mechanism connectingr the gate of the tirst wheel with the gate ot' the second wheel So as to move it simultaneously but in an opposite direc tion to the motion ot' the gate ot' the lirst. wheel.

2. 'lhe combination ot' two turbine water wheels havingr their runners mounted on a common shat't with discharge ends towards each other. a cylinder constructed in the dome ot one of thc wheels and provided with a piston which is connected to the gate ot' that wheel, and by which the gate is operated, a pair of parallel rods connected to the gate ot? the first wheel and extending through the casing. a second pair ot' parallel rods connected to the gate ot the second wheel and extending to the tront. oi' the casingof the Iirst wheel` these two pairs of rods being connected together so as to move in opposite directions an equal distance.

3. The combination of two turbine water wheels having their runners mounted on a common shaft. with discharge ends towards each other. a cylinder constructed in the dome of one ot" the wheels and provided with a piston which is connected to the gate ot` that wheel. and by which the gate is operated, a pair of parallel rods connected to the gate of the iirst wheel and extendingr through the c ng, cach ot said rods havingl on its end u rack. a second pair ot' parallel rods connected to the gate of the second wheel, each of said rods havingon its end a rack, and a pair of pinions suitably mounted to en;r the racks ofi the two pairs of rods and cause them to move in opposite directions equal distances.

4, The combination ot two turbine water wheels havin.;r their runners mounted on a common shat't with discharge ends towards each other, a cylinder constructed in the dome of one ot the wheels and provided with a pistou which is connected to the gate ot. that; wheel. and by which the gate is operateda pair ot' parallel rods con nected to the gate ot' the tirst wheel and extending through the casing. a second pair of parallel rods connected to a crosshcad, and a third pair of rods which latter are connected to the crosshead at one end and to the gate of the second wheel at the other end. the second pair of rods extendingforward through the casing, the rods of the two wheels beine' connected together so as to move in opposite directions an equal distance.

5. The colnbination ot' two turbine water wheels having their runners mounted on a common shaft with their dis charge ends owards cach other, means for movin,"r the gate of: the first wheel, a pair of parallel rods connected to the gate of the tirstA wheel and extendingthrough the casing, a second pair ot" parallel rods connected to the gate of the second wheel by means ot' a yoke, and a thir'l pair of rods which latter are connected to the volle :1t one end and to the gate ot the second wheel at the other end, means t'or supporting the yoke. and adjusting: its alinement, the rods of the second wheel extending to the front of the casingo1' the front wheel and bein."r there connected to the rods of the iirst wheel so as to move in an opposite direction thereto an equal distance.

G. The combination of two turbine water wheels havine: their runners mounted on a common shaft: with their dis charge ends towards each other, means for movingl the gate of the tirst wheel, a pair of parallel rods connected to the gate of the tirst wheel and located in the axial plane of the runner shat't, with a second pair et parallel rods connected at their rear ends to the gate of the secltlO ond Wheel-and extending forward through the casing, the second pair of rods being located in the same axial plane as the first pair, a pedestal located in front of the casing and carrying the forward journal of' the runner shaft and on either side of the journal auxiliary brackets in each of which is mounted a vertical shaft carrying a pinion which is engaged by racks upon the forward ends of the gate rods, substantially as described.

'.7. The combination of two turbine water wheels having their runners mounted on a common shaft with their discharge ends Atowards each other, means for directly and independently moving the gate of the first wheel, in addition to said means a rod connected to the gate of the first wheel and'extending through the casing, a rod connected to the gate of the second wheel and extending forward parallel to the rod of the first wheel, each of the rods being provided with a rack, the rack of the rod of the first wheel standing opposite the rack of the rod of the second wheel, a pinion mounted on a vertical shaft between the racks of the rods of the two wheels.

8. The combination of two turbine water wheels having their runners mounted on a common shaft with their discharge ends towards each other, means for directly and independently moving the gate of the rst wheel. in addition to said means a pair of parallel rods connected to the gate of the first wheel and extending through the casing, a pair of parallel rods connected to the gate of the second wheel and extending forward parallel to the rods of the first wheel, all of the rods being provided with racks, the racks of the rods of the first wheel standing opposite the racks of the rods of the second wheel, a pair of pinions mounted on vertical shafts between the racks of the rods of the two wheels.

9. The combination of two turbine water wheels having their runners mounted on a common shaft with their discharge ends towards each other, means for directly and independently moving the gate of the rst wheel, in addition to said means a pair of parallel rods connected to the gate of the first wheel and extending through the casing, a pair of parallel rods connected to the gate of the second wheel and extending forward parallel to the rods of the first wheel, all of the rods being provided with racks, the racks of the rods of the first wheel standing opposite the racks of the rods of the second wheel, a pair of pinions mounted on vertical shafts between the racks of `the rods of the two wheels, a pair of beveled gears mounted upon the same shafts as the pinions, a counter shaft suitably journaled carrying beveled gears to mesh with the first beveled gears.

lO. The combination of' a casing containing two turbine water wheels, rods connected to the gates of the two wheels and extending through the head of the casing and provided on their outer ends with racks, the teeth of which are opposite to each other, a pedestal located in the front of the casing and carrying the forward journal of the runner shaft, an auxiliary bracket on the pedestal in W'hich is journaled a vertical shaft carrying a pinion, the bracket being provided on each side of the pinion with a rack guide to guide the racks of the gate rods which mesh with the pinion. l

1]. The combination of a casing containing two turbine water wheels, two sets of rods connected to the gates of' the two wheels and extending through the head of the casing and provided on their outer ends with racks the teeth of which are opposite to each other, a pedestal located in the front of the casing and carrying the forward journal of the runner shaft, two auxiliary brackets on the pedestal, one on each side of the pedestal, in each of which is journaled a vertical shaft carrying a pinion, each bracket being provided on each side of the pinion with rack guides to guide the racks meshing with the pinions.

12. The combination of a casing containing two turbine water wheels, two sets of' rods connected to the gates of the two wheels and extending through the head of' the casing and providedon their outer ends with racks the teeth of which are opposite to each other, a pedestal located in the front of the casing and carrying the forward journal of the runner shaft, two auxiliary brackets on the pedestal, one on each side of the pedestal, in each of which is journaled a vertical shaft carrying a pinion, the pedestal, brackets and journals being located in the same vertical plane, each bracket being provided on each side of the pinion with rack guides to guide the racks meshing with the pinions.

13. The combination of a series of turbine water wheels, the runners all being mounted on a common shaft, a gate for each runner, the gates being connected to move simultaneously, a cross head for each gate, and a bearing for each cross head comprising a shoe on the cross head and a slotted casing mounted on the frame, the casing having a transversely adjustable wear plate.

14. The combination of a series of turbine water wheels, the runners al1 being mounted on a common shaft, a gate for each runner, gate rods, and a cross head connected thereby to each gate, a plurality of said gates being connected to move simultaneously in the same direction, another gate, and means directly connected to it by which it may be independently moved, and additional means whereby the latter gate may move the aforementioned gates simultaneously and in a direction opposite to its own motion.

15. The combination ofa series of turbine water wheels, all runners being mounted on a common runner shaft, means for directly and independently moving the gate of one of the wheels, in addition to said means gate rods connected to each gate, a cross-head connected to each pair of rods, the gates lnoving in the same direction, being connected together, the rods of the governed gate being connected to and moving the rods of the gates which move in the opposite direction.

1G. The combination of a series of' turbine water wheels, all the runners being mounted on a common runner shaft, means for directly and independently moving the gate of one of the wheels, in addition to said means a crosshead connected to each gate, a pair of gate rods connected to each crosshead, the crossheads of the first and third wheels guiding the gate rods of the second and fourth wheels and the crosshead of the second Wheel guiding the gate rods of the third wheel, the gates moving in the same direction being connected together, the rods of the gov erned gate being connected to and moving the rods of the gates which move in the opposite direction.

17. rlhe combination of a series of turbine water wheels, all runners being mounted on a common runner shaft,

means for directly and independently moving the gate of' one of the wheels, in addition to said means a pair of gate rods connected to each gate, a cross-head connected to each pair of rods, and adjustable guides mounted on the casing, to guide the cross-heads, the gates moving in the same direction, being connected together, the rods of the governed gate being connected to and moving the rods of the gates which move in the opposite direction.

1S,` The combination of' two turbine water wheels, a primary gate moving mechanism connected to and operating the gate of one of the wheels, and additional mech-- anism connecting the gate of the first wheel with the gate of the second wheel so as to move the second gate by the motion of the first gate simultaneously but in an opposite direction to the motion of the gate of the first wheel.

19. The combination of two turbine water wheels, a primary gate moving mechanism connected to and operating the gate of one of the wheels, additional mechanism comprising rods connected tothe gate of the first Wheel, rods connected to the gate of the other wheel, the gate rods of the first wheel being connected to the gate rods of the second wheel, and imparting a reverse motion to the rods to cause the gates of the two wheels to be moved simultaneously in opposite directions.

20. The combination of a series of turbine Water Wheels, means for directly and independently moving the gate of one of the wheels, additional mechanism comprising gate rods connected to each gate, a cross-head connected to the rods of respective gates, the gates moving in the same direction being connected together, the rods of the governed gate being connected to and moving the rods of the gates which move in the opposite direction.

21. The combination of a casing, a series of turbine water wheels arranged in sets, the discharge ends of the wheels of each set being towards each other, rods connected to the gate of each wheel, the gates to be moved in one direction being secured to selected rods, and the gates to be moved in the opposite direction being secured to other rods, so as to move the gates of each set of wheels in Opposite directions, means for directly und independently moving,r one of the gates and additional mechanism connectinl` the driven gate to all of the other` gates so as to move them.

22. The combination of two turbine water wheels, a ;jate-movine mechanism integral with the gate of one of the water wheels and a positive connection between the gates of the two wheels, whereby the two gates are operated simultaneously without lost motion.

23. 'lhe'combination of two turbine water wheels, a gate for one of the water wheels, a governor, gate-actuating mechanism positively controlled by the `:governor and directly attached to the lgrate of one of the water wheels,

whereby lost; motion between the governor and said l:rate is obviated. and a gate for the other water wheel eenw nected to the lrst mentioned ;ate to be actuated thereby. 24. the colnlnnatien of two turbine water wheels. a l t'or one ot the water wheels. a l:revel-ner. gateatetn ating: mechanism positively controlled by the governor and rigidly attached to said gate. whereby lost motion bet.\\'een the governor and the gate is ehviated` and :1. gate for the other water wheel connected to the trst mentioned ;'ate to be actuated thereby,

Signed by me at Baltimore city and State et' Maryland this lTth day et' May, 1907.

FRANCIS lll.llltt)'l"l'.

Witnesses t linsl'nn Il. LA'riIAM, T. A. Lnn.