US993064A - Automatic control for hydraulic nozzles. - Google Patents

Description

` G. J. HENRY, J1y i AUTOMATIC GONTEQL POR HYDRAULIC NOZZLBS.

' APPLICATION FILED MAB. 22, 1909. 993,064. Patented May 23, 1911.

2 SHEETS-SHEET 2.

,16. mi 1. If

, icmfff UNITED srA'rns PArEN'r orrrcnf grenen JfHENnY, Jn., or sAN FRANCISCO, cALIroRNIA, AssIGNoR, oIoNE-IIALF To 'mn PELToN WATER WHEEL COMPANY, A ConPonA'rmNoI CALIFORNIA.

To all whom 'it may concerm I Be'it known that I, GEORGE J. HENRY, Jr., a citizen of theUnited States, residing in the city and county of San Francisco Vand Statevof California, have invented certain 'new 4and useful Improvements in Automatic Control lfor Hydraulic Nozzles, of which the following is a specification.

f The present invention relates to governor actuated means for automatically controlling thewat'er quantity of an impact stream .issuing from a fixed or stationary hydraulic -nozzle of the needle valve type onto the vbuckets of 'a tangential water wheel, and varying the direction of the issuing jet art relative to the buckets' of said Wheel 1n accordance with variations in the working load placed onto the said wheel; the object of the invention beingto simplify the construction of the means thrown into action by the changing speedfof the governing mechanism, due to load variations, for varying the directiorof the issuing jet stream relative to the buckets of the water wheel, and controlling the water quantity of the impact stream to conform to changes in the direction of the said.

, stream, the'construction of the associated working parts of the actuated controlling means being such that the stream deflectors movement'out of. the impact stream will be proportionately to and in synchronism with the closing movement of the needle valve within the nozzle, so that the position of the defiector when out of the stream will be such as to just. clear ythe-edge of 'the' issuing stream.' I

To `comprehend the invention, reference lshould be hadto the accompanying sheets `of drawings, wherein- Figure Y1 is a side view of the apparatus with the deflecting means positioned` for 4deflecting a portionof the stream issuing from the fixed nozzle off of the buckets of the water wheel. Fig. 2 is anend elevation illustrati/ng the governing means and the connection thereof with the stem ofthe pilot 'valve working `within the valve-controlled cylinder.4 Fig. 3 is an end elevation taken on line w--QI of Fig. 1 of the drawings. Fig.

AU'roMA'rIC CoN'rnoL ron.l HYDRAULIC NozzLns.

vSpecification of Letters Patent. Patented May 23,l 1911,

Application led March 22, 1909. Serial No. 484,993. r

4 is a vertical sectional view of one-of the pilot valved lcylinders for admitting fluid under pressure to one of the controlling cylinders. Fig. 5 is a detail view of a section of the ap aratus broken away. Fig. 6 is Ia horizonta section of a portion of the apparatus in the plane of the pins 21s of Fig. 5.

In the drawings, the numeral 1 is used to designate a water wheel mounted on the drive shaft 2, the said wheel being driven by an impact .stream 3 issuing from the nozzle 4, which nozzle is rigidly secured to a vpipe line for supplying water thereto. lVithin the said nozzle 4 is located a-longitudinally movable needle' valve 5, for regulating the outlet orifice of the said nozzle to proportion the stream issuing therefrom in accordance with the working requirements of the water wheel.

`The direction of the impact stream 3 issu? ing from the fixed nozzle 4: is controlled by the deflecting hood 6,.whic his arranged to swing into and out of the, said stream in advance of the outlet orifice of the nozzle.

Vportion of the fixed nozzle, which rock-shaft is operated by the connecting rod 8, united at its forward end to the crank arm 9, secured to and projecting from the 'said rockshaft 7. At its inner end, the connecting rod S is united t0 a crank-arm 10, upwardly projecting 'from the rock-shaft 11, which rock-shaft is actuated by the fluid controlled piston 12, working within the cylinder-13,. the stem 111 of which piston 12 is connected by a link 14' to a crank arm 15, secured to and projecting shaft 11.

The movement. of the piston 12 is controlled by fluid `under pressure admitted into the cylinder 13, byithe connections 17-17, which cuunoctionslead respectively from the outlet ports 18- -18, of the'valved cylinder 1'6.y The said outlet orts 18..-18 are controlled by the pilot va ve 19, workingwithin the `cylinder 16. Into the -said A.cylinder 16, fluid under pressure is admitted through the feed pipe 19', which pipe leads from any .suitable source .of fluid supply.`

from Vone end of the rock- T-hestem 2O of the pilot valve 19Vextends a in turn connected to the lower ,arms of the.

fly balls 23 situated withinnthe casing 23', the upper arms of the said ly balls 23 being secured to the drive rod 22.

To the lower end of the drive rod 22 is carried a pinion 24, which 4meshes with a gear 24' on the shaft 25, driven from the drive shaft 2 of thewater'wheel 1, by means of the drive belt 25', which works over the I belt wheels 26-26', secured respectively to .the drive shaft 2, and the operating shaft for the governing mechanism.

YO n lthe end of the rock-st iaft 11, opposite to' that carrying the upwardly projecting crank' 15, is a slotted disk 27, within which is adjustably mounted the block 27', carrying the roll 28. rllhis roll Works within the slotted ortion 28' of a lever arm 29, pivoted at its youter end to a collar 29' secured to and carried by the stem 30 of the needle valve 5 working within the nozzle 1. The said lever arm 29 is also provided with a cam .slot 30', within which works a roll 31, carried by the lverticallymovable rod 32, the said rod moving Withinthe guide frame 32', and having its upper end .portion connected by the plate 33 to the stem of the pilot valve 34, located and working within the valve cylinder 34' for controlling the outlet ports 35-35' of the said cylinder 34', which ports are connected Arespectively by the pipes 36-36 to the inlet ports of the cylinder 37, for admitt'ing iuid under pressure thereto to actuate the piston 37', working therein. This piston 37', is carried by the valve stem 30, extended. into the said cylinder, and the movement of said piston actuates the valve stem 30 to` operate 'the' needle valve 5. Fluid under pressure is sup plied to the valve cylinder 34', through the feed pipe 38, which leads from any suitable sourceof'supply.

Incase the load onv the waterl wheel be reduced, the following operation of the working parts is occasioned to actuate the dcfieetor hood to divert a portion of the issuing impact stream from off the buckets of the water Wheel, and to actuate the needle valve in order toproportion the water quantity of the impact stream relative to `such change in the working load. As the work' ing load reduces, the wheel is driven at a higher speed by the impact stream bearing onto the buckets thereof, which speed being transmitted to the shaft 25, through the deeeaoca v scribed connection, imparts greater rotation Vto the drive rod 22', causingthefly-balls 232 pipe connection 17 into thecy'linder 13 in,

advance ofthe piston 12, the pressure of the admitted fluid lforcing the said pistonout'-l wardly relative to the .water wheel and, through its'connection with the rock-shaft 11 operating ythe same to throw the crankarm 10 outwardly Arelatively to the water wheel. This movement ofthe rock-shaft 11 exerts a pulling strain onto the connecting rod 8, which'turnsthe rock-shaft 7, to.

quickly place the deiecting hood into the Y impact streamv 3, to divert a portion thereof from oli' the buckets of the water wheel, the

rnward or upward movement of the deflectv ing hood continuing until the stream iin act' ing onto the' buckets of the Water whee hasbeen regulated to the changed load placed onto the .water wheel. At the Vsame time,

the part rotation given to the rock-shaft 11,

turns the slotted disk 27 carrying the slide block'27 and the roll 28, turning the same to swing the lever arm 29 upwardly on its pivoted oint, the movement of which arm acts agalnst the roll 31 working inthe cam'v slot 30 to lift the same. As the said roll 31 is moved u wardly it carries'therewith the rod 32, which, through its connection,.lifts the valve stem 33 of theY pilot valve 34, and

raises the said valve within the cylinder 34- l to uncover the port 35, and allow of fluidv.under pressure passing from saidvcylinder vthrough the connection 36 into thecylinder 37, back of the piston 37. The pressure thus admitted into the said Vcylinder 37, forces inwardly lrelative to the water wheel the piston 37' and the valve stem 30 to Which it-is connected, causing the valve 5 to slowly advance or gradually move into and reduce the outlet orifice of the lixed nozzle'. 4, until the stream issuing therefrom is proportioned to the working requirements of the water wheel under the change in the load placed thereon. During the outward movement of the valve stem 30, the leverl arm 29 travels therewith through vits pivoted connection with the collar 29' on said stem, thesaid lever arm being temporarily held duringI such longitudinal movement in lits adjusted position by means of governor controlled roll 28 located wit-hin the extended slottedl portion of such lever arm. As the lever arm 29 is moved outwardly, the roll 31 carried by the vertically movable rod 32' will ride on the downwardly inclined portion of the cam slot 30' of the lever arm 29, and drawing downward `the vertically movable rod 32, will, through its connection, lower the valve stem 33 and the ilot valve 34 carried thereby, causing the sald valve to gradually close the port 35 of the cylinder 34 and cut 0E the supply ofy fluid under pressure into the cylinder B7 back of the piston 37', thereby bringing the needle valve 5 to a state oi' rest the moment-'the outlet orifice of the nozzle 4 is controlled to proportion the impact stream to the changed working load on the water wheel. The moment the supply of fluid under pressure to the cylinder 37 has been cut-off, the vertically movable rod 32 will have been restored to its neutral or zero osition. As the needle valve 5 is moved into the outlet orifice of the nozzle 4, the water quantity of the issuing stream is gradually reduced and consequent-ly less power is placed onto the buckets of the water wheel, resulting in a gradual reduction or lowering as to the speed of the fiy balls 23 to restore the governing means to normal speed. the said fly balls lower, the valve stem 20, through the described connection with the vertically movable sleeve 21, will be gradu- .ally raised, carrying therewith the pilot I valve 19 to close the port 18 ofthe cylinder 16 and gradually open the port 18; to admit fluid under pressure through the pipe connections 17 into the `cylinder 13 in back of the piston 12,'forcing the same inward relative to the water Wheel and through its connection with the rock-shaft 11 turning the said shaft to actuato the crank arm l0 for shifting outwardly the connecting rod 8 to move the deHectiug hoodG out of the impact stream proportionately to the closing movementof the needle valve 5, so that when the said valve is brought to a state of rest, the upper edge of the deflecting hood'will 'just clear the surface of the issuing jet.

lUnder this arrangement the slightest variation in the speed of the fly balls of the' governingmeans will act to'shift the position of the deflecting hood relatively to the issuing impact stream.

It will be noted that the governing mechanism when placed into action moves the rock-shaft l1 to throw the connecting means for actuating the deflecting hood, and shift the position of the .lever 11 in order to swing the 'lever arm 29 on its pivoted point, which movement of the said'lcver varmv o'perates the vertical rod 32 to move the pilot valve 34, to 4admit fluid under pressure into the cylinder 37., say back of the piston 37` I. the pilot valve 34 is moved within its cylinder to gradually cut ofl" the fluid pressure l'o the cylind'er 37, during the longitudinal At the same time, as the speed ofV movement ofthe lever arm 29, the movement of which is transmitted by means of the roll 31, working in the cam slot 30 of the Ilever arm 29, to impart vertical motion to the rod 32 which is connected to the stem 33 of the pilot valve 34. The pivoted lever arm 29 thus performs two functions, the first being through its described connections to actuate.

the pilot valve 34 to admit fluid under pressure into t-he cylinder 37 on a shifting in ythe governing means, and secondly to gradually restore the pilot valve 34 audits connections to a neutral or zero position, simultaneously with the movement of the valve 5 withinthe nozzle 4, in order to cut oi the supply of fluid under pressure into the cylinder 37. The said lever arm 29 thus imparts a primary andsecondary adjustment to the pilot valve 34, the first being in response to the action of the governing means, and the second in response to the movement of the needle valve 5 within the-nozzle 4. The secondary adjustment impartedto the pilot valve 34 is accomplished without disturbing the adjusted positionrof the governing mechanism, which remains statlonary until a change therein is called for in response to a variation of the load placed onto the water wheel. Should a greater working load be placed onto the water wheel calling for an increase as to the 4water of the impact stream to be placed onto the buckets of the' water wheel, the operation of the working parts will be the reverse of that just described.

IIa-ving thus described the invention, what is claimed as new and desired to be protected by Letters Patent is':-

1. ln combination with a. water wheel, a v

rigid nozzle, a needle valve therein for controlling the outlet orifice thereof, and 'a deflecting hood arranged to swmg in advance of the nozzle for the purposeset lforth, of a motor for the hood, a` governor actuated valve for controlling the motor, connections between the motor and hood, a motor for, the needle valve, a valve for the motor, means actuated b the aforesaid connections for shifting said motor valve, said means being connected to thefneedle valve and comprising provision for restoring said valve to normal position and bringing the needle valve to rest, as set forth.A

` 2. In an apparatus of the described char-I acter, the comblnation with a fixcdnozzle, a needle valve longitudinallymovable therein, a fluid receiving cylinder, a pis on therein connected with the needle val e, means 'lio for mlmitting fluid under pressur into said cylinder, an operatinglever, con ection between said lever andthe means for admitting fluid under pressure to the cylinder, a dellecting hood Afor con rolling the direction ot' the jet issuing from the nozzle, goverm'ng means, and conneetionsbetween said name to this specification in the' presence of f means and the dlefleictfilng hoog, said mlllectwo subscribing witnesses. tionsactuatin vi: e e ectin 0o an acing into operaion the Huid gontrolled 'mleans y GEORGE HENRY-JR' 5 for shifting the needle valve in accordance Witnesses: I

with the movement of the deecting hood.- N A. ACKER,

In testimony whereof I have signed my D. B. RICHARDS.

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