US837934A

US837934A - Nozzle for steam-turbines.

Info

Publication number: US837934A
Application number: US26642305A
Authority: US
Inventors: Charles V Kerr
Original assignee: KERR TURBINE Co
Current assignee: KERR TURBINE Co
Priority date: 1905-06-22
Filing date: 1905-06-22
Publication date: 1906-12-11
Anticipated expiration: 1923-12-11

Description

',PATENTED DBG. 11, 190e.

` '0. V. KEER'. NOZZLE EORSTEAM TURBNES. L Y P vLED J f showing a modiiied 'enable one to obtain a i UNTTED STATES CHARLES V. KERR, OE

TURBXNE COMEANY, OF OE NEW YORK.

WELLSVILLE,

W ELLSVILLE,

PATENT- oEEroE.

NozzLE Foe STEAM-romeinse.

Application filed June 22,

To cLZZ'wi/om it may concern:

Be it known that l', CHARLES V. KEER, a citizen of the United States, residing at Wellsville, in the county of Allegany and lState of New York, have invented certain new and useful Improvements in Nozzles for Steam-Turbines or the Like, of which the iollowing is a specifi ation. I My invention relates to nozzles, and more especially to those used in' connection with steam tprbines of the impact type, as shown, for example, in my former patent, No 756,241, dated April 5, 1904, or my allowed application, Serial No. 231,490, filed March 5, Teta.

The objects oi my invention are, first, to rovide a construction of nozzle which makes 1t possible to employ a larger orifice and at the same time as eilicient nozzle as heretofore used with turbines; second, to provide a no'zzle which wil enable one to better direct the jet against the buckets oi the turbine and at the same time prevent more or less the cross-currents which tend to forni within the nozzle and destroy the velocity of the motive fluid or its eiiiciency ot' operation, third, to` provide a needle within the nozzle-tip and means of adjustment of the same which will greater control or reinement of pressures and velocities of the motive iiuid in passing through the nozzle, fourth, to provide a construction of'the nozzle which may be quickly adjusted m all ositions with respect to the buckets and a so easily attached or detached from the turbine for repairs and inspection; fifth, other evident advantages oi construction Aand mode of operation which will be fully understood from the following detailed description of the invention. I

My invention consists of features of construction and relation of parts which will be hereinafter more i'ully described, and particularly pointed out in the appended claims. In the accompanying sheet of. drawings, in which similar reference characters indicate the same parts iii both the iigures, Figure 1 is a sectional view/.through iny improved nozzle, showing a portion oi" the wal separating one stage oi' ex )ansion or section ironi another and a bue ret with fragment of impact- Wheel. Eig. Z is a similar view as Fig. l,

forinot the 'invention Specification of Letters Patent'.

Patented Dee. 11, 1906.

1906. ser-:ai no. 266,423.

Referring to the drawings, 1 is a section oi the casing or wall which divides one stage of expansion of the niotive i'luid from another in passing through the dil'lerent sections oi 1 the turbine. 2 indicates a circular groove which receives a corresponding tongue in the wall oi the adjacent section in forming the complete casing of the turbine.

3 is an opening in the wall 1, forming a socket thrpugh which is passed the open and l threaded end 4 of the hollow nozzle-body 5,

6 is a shoulder on the body 5 lfor engaging l the wall l, wherebyV the nozzle is firmly secured thereto by a lock-nut 7, which engages the threaded end 4. l

8 represents notches in the lock-nut, by which the saine may be quickly and securely tightened up.

9 is the nozzle-tip, `which is preferably, as shown in the drawings, detachably secured to the hollow nozzle-body 5, but may, il so desired, be made integral therewith. lt is also to be understood that, it desired, the body 5 of the nozzle may be extended and a plurality of tips 9 be used, as shown in mv allowed application heretofore referred to. v

10 represents a section of the disk of' an impact-wheel in a turbine, and. 11 is one oi the buckets against which impinges the jet `oi the motive iiuid passing out oi' nozzle-tip 9. 1t will be readily seen i'roin the construction shown that the angular relation of the axis of the jet of motive fluid with respect to the path described by the buckets can be readily changed by unlocking the nozzlebody 5 and adjusting the same in thepening or socket 3 and afterward locking by tightening up nut 7.

The constructions and relations of the parts sofar described are common to both forms of my invention, as illustrated in Figs. 1 and 2. lteferrinT nowespecially teilig. 1, 12 represents an a instable and solid needle having one of its ends conical in shape, which end is inserted within the iiaring interior of the nozzle-tip 9. `The middlesection 13 of the needle is cut awayso as to increase, or rather not unnecessarily restrict, the size of the passage-way ior tie motive iluid and permit the saine to easily and uniformly surround the needle in passing through the ti s of the nozzle. 14 represents threads at t ie i upper and outer end of the needle which enserene gage corresponding threads in the nozzlel5 is a notch in the upper side o'l" the needle which is adapted to e engaged by a screwdriver or other tool used for adjusting the needle-point with respect to the openingl in the nozzle-tip.

16 is alock-nut for securing the needle in adjusted position. In F ig. 2 I have shown a modi'lied lorrn of needle which .is especially woll adapted for 'unusually largentmzles, so as to have the jetas it passes out the end ol the nozzle-tip uniform and of' the same veloci 'y throughout its entire section. ln this form the needle 12 consists oi" a hollow cylinder havin; ;l thin walls and whose end terminates near the opening of the nozzle-tip l). 'The section of the hollow needle corres'pomling to the passage within the body 5 of the nozzle is provided 'with a series ol openings 13', which connect the interior ol the hollow needle l2 with the passage-in the body 5. 'lhe other end of the needle 12 is closed and provided 'with screwthreads ll, which engage correspondingjr threads in an opening in body 5 and, as heretolme described with reference to Fig. 1, is provided at'its upper side with a similar slot 15 'lor ad the hollow needle and a locking-nut 16.

f at any time the removable tip 9 should be lound to be worn or inellieient, it can be easily unserewed and replaced by another without havingr to replace an entire new body section or nozzle.

The operation ol" the invention is iollows: The motive fluid 'llows into the interior passage ol the nozzle-bmiy 5 in passing' trom one stage ol expansion to another. ln the form-shown in Fig. 1 the motive lluid passes out of the nozzle-tip 9 on all sides and uni` forinly about the needle 12,' 'the conical section of the needle taking' up what usually is filled with dead and whirling fluid. ln the 'lorin shown in lligr. 2 the motive lluid not only passes around the needle 12, but by means ol the opening-s 13 passes into the interior thereof and unites at its ends with' the exterior motive lluid, forming' one Continuous and unbroken jet which is especially applicable to nozzles having large tips. The regulation of the [low and correction ot the imperfections in the jet are ellertod by adjusting the needle end to or `trom the end ol" the nozzle-tip in order to properly and elli-A its ciently impinge against the rotary brarliets. 'Vhilc l have herein shown and sjnoilu'ally described two means ol' vention, l'wish it, to be distinetty understood that l do not rare to limit myselli to these particular forms7 as it will be seen that other and similar l'orms ol' construction would readily suggest themselves to those skilled in the art without departingr from the spirit' ol' this inventioin accomplishing the inl l l l l l justing the position ol' portions of the l l l l l .able needle and means Having now hilly described my invention, what lf claim as new, and desire to secure by Letters Patent, is`

l.. A nozzle .lior'steani-turbines or the like comprising' a hollow body open at one end and having a hollow o )en tip and attached to the hollow body at the other end, a needle within the tip and means separate and independent oli the tip and nozzle for securing the hollow body of the nozzle to the turbinecasing.

2. A nozzle for steam-turbines or the like comprising a hollow body and having a hollow open tip at the other endJ an adjustable needle within the tip and means for angularly adjusting and securing the nozzle to the turbine4casing.

3. A nozzle for Stea1n-turbines or the like wmprisingr a. hollow body open at one end and having a removable hollow open tip at the other end, an adjustable needle within the tip, means for locking the adjustable needle, and means for angularly adjusting and securing` the nozzle to the turbine-easing.

i. A. nozzle lor steam-turbines or the like comprising a. hollow body open at one end and having' a hollow open tip at the other end, a hollow needle open at one end and closed at the other end and within the tip and attached to the hollow body, means for permitting the motive lluid to pass from the interior ol the hollow body to the interior of the needle and means separate and independ-v ent ol" the ti p and nozzle tor scouringl the hole low body' ol: the nozzle to the turbine-easing. 5. A nozzle 'for steam-tnrbines or the like comprising a hollow body open at one end and having, a hollow end, an adjustable hollow needle open at one end and closed at the other and within the tip and attached tothe hollow body, means lor permitting' the motive i'luid to 'pass from the interior of the hollow body to the interior ol the needle, means .tor loekinjbr the adjustseparate and indetip and nozzle tor securing the pendent ott the e to the turbinehollow body ol" the nozzl casing. i i

(l. A nozzle For steam-turbines or the like comprisingr a hollow body open at one end and having' a hollow removable tip at the other end, an adjustable hollow needle' open at one end and closed at the other and within the tip, means 'for permittingP the motive fluid to pass from the interior ol.` the hollow body to the interior of the needle, means for locking the adjustable needle and means lor adjustably supporting and securing' the nozzle to the turbino-easing.

ln testimony whereolE fl allix in presence ol two witnesses.

my signature Witnessem l). W, llA'runoNn, lAiruno l). MCCLURE.

open at one end