US987976A - Turbine-pump. - Google Patents

Description

. W. L. FORWARD..

TURBINE PUMP.

atented- Mar. 28, 1911.

WALTER L. FORWABD, OF WEST BERKELEY, CALIFOBNIA, ASSIGNOR TO BYRON JACK- SON IRON WORKS, OF BERKELEY, CALIFOBNIA, A OORPORATION OF CALIFORNIA.

. 'ruume-ma To all whom it may conccm: i

Be it known that I, WALTER L. FORWABD, citizen of the United States, residing at West Berkeley, in the county of Alameda and State of California, have invented new and useful Improvements. in Turbine- Pumps, of which the following is a specifieation.

My invention relates to improvements in that class of apparatus known as high pressure turbine pumps.

efi'ect of the suction at the inner end and the' pressure at the dicharge end of the apparatus produces a thrusting action upon the runners or impellers which are revolved I easing adapted to contain .a runner or impeller 2 which is mounted upon a shaft 3, one journal box of which is shown at 4. At

one end of the easing, as at 5, connection is' made with the source from which liquidis to be drawn.

3' is the suction inlet. The rapid revolution 'of the impellerwithin thecasing efects a suotion to draw the Specification of letters Patent. Application filed August 8, 1910. Serial No. 575,328.

' ratented Mar. 28, 1911.

`liquid into the apparatus and by Centrifugal force to throw it outward into theannular and discharge portion 6 of the easing. The vanes of the impeller revolve in a cham-. bered head, from which head a sleeve 8 extends coneentric with the shaft 3. Within this sleeveis fitted a tubular plug 9' which is secured and adjusted by studs and set nuts 10. Within this plug suitable packing 11 is interposed between the plug and the shaft to form a tight joint, and 12 is the gland which abuts and retainsthe packing 'in place.

sis

7 is a chamber integral with the back of n the runner and having'pumping vanes 7 l3 are ports formed in the rirn of the chamber 7 and Opening into the 'discharge portion 14 of the easing; and 13 are ports communicating with the chamber 15. The ohambers 14 and 15 are formed respectively between' the runner or impeller and the interior' of the easing, and between' the impeller and the cover 16; and the ports are'so located with relation to these chaInbers. that end movement of the impeller opens and closes these ports to a greater -or less degree.

The operation of the apparatus would then be as follows: Should the impeller 2 move toward 'the suction inlet .3' of the' pump, due to an accumulation of pressure in the chambers 14 and 15 which connectwith the discharge portion of the apparatus, the vanes in the chamber 7 would aot as a pump as soon as the ports 13 were opened by the movement of the impeller away from the cover 16 and plug 9. The vanes in the chamber 7 would then draw' a supply of liquid from the chamber 15 and would force the same into the ohamber 14: which communicates with the dischar'ge, thus relieving parts by means of the studs or set screws and nuts 10, as previously stated. WVater gets into chamber 15 by the back pressure of the head pumped against; this head pres- 5 sure from the involute 6 and chamber 1 1 seeking admission to the chamber 15 through the running joint provided by the rim 17 of the back side of the runner and the annular fiange 18 of the easing. This back pressure through the running joint will accumulate in chamber until the thrust' from that end moves the impelier suflicientiy to open communication between the pressure' chamber 15 and the vacuum chamber 7 15 through the space 13 around the end of the female plug 9. This reief pressure is then discharged from chamber '7 through the ports 13 into the pump discharge and outside the impeller. This is tobe distin- 20 guished from deliyering the excess leakage water :from the pressure chamber 15 into-the suction side or center of the runner. The runner may be shifted iengthwise of shaft 3, so as to Vary the point of equilibrium of the runner by moving the plug 9 in-or out.

Having thus described my invention, what I claim and desire to Secure by LettersPatent is- 1. An automatic balancing means for a turbine pump, such means comprising a casing having inlet and discharge passages, a runner or impeller mounted upon a sh aft and revoiuble within the easing, said impeller and easing forming chambers within Which liquid pressure may accumulate, and

said impeller having ports near its circumference and axis forming communication between said chambers and means y whereby the ports are automatically con- 40 trolled by the endwise movement of the runner. v V 2. In a turbine pump, a easing with a centrally disposed inlet, an annular peripheml dischargeand a chambered head opposed Pto the in let, a runner or impellerrevolubie within the easing, having a rim extension and Vanes fitting the head chamber, said rimextension 'and the axial portion of the run'- 'ner having ports communicating respectively with the head chamber 'and with the discharge, and means controlling said ports by the endwisemovement of the runnen- 3. In a turbine pump, a easing with a centrally disposed inlet, an annular'peripheral discharge, and a chambered 'head opposed to the iniet, 'a runner or impeller revoluble within the easing, with a rim-eXten-, sion and Vanes fitting the head chamber, saidrim-extension having ports communi- 6 cating respectively with -the head chamber and with the discharge and adapted to control the discharge ther'ethrough by the end movement of the'runner, a sleeve, 'andan sleeve, said runner having a portin line with and Controlled by the plug, and through whichsleeve the impeller shaft extends and is revoluble.

'4. In a turbine'pump, a 'easing with a 4 centrally disposed inlet, an annular peripheral discharge and a chambered head opposed to the inlet, a runner or impeller revoluble within' the easing, .having a rim-extension :and Vanes fitting the head chamber, said eX- tension having ports communicating respectively with the head chamber and, with' the i discharge and adapted to control the disi charge therethrough by the endmovement of the runner, a tubular plug within which the impeller shaft is revoluble, said runner havinga port in line with the plug and controlled thereby, and means; to adjust the' plug in the direction of its length.

" 5. In a entrifugal pump, the combinai with the discharge of the pump outside of the impeller and inside-the easing.,

6. Thecombination in\a Centrifugal pump,- of a casing, an' impellertherein having an inlet and a dischar e, said impeller having an' annular vacuu chamber on one side, said vacuum. chamber having a running joint with a flange of the pump case, the impellerand pump case inclosing a pressurechamber which is in communication with' thepump discharge through the running joint, said pressure chamber and Vacuum, chambei' having communication approximate tothe axis of the runner, and said vacuum chamben having ports Controlled by said running joint, and whichports when uncovered by the running joint open directly into the disc'harge;

` 7. In a centrifu'gal pump, the combination i of a case having a central inlet-and peripherai discharge, a shaft, an impeller in the case on the shaft and having a' running joint.

with the case, means on' the case and on the side of the impeller opposite the suction' inIet to inclose a pressure chamber receiving leakage water from the discharge through the running joint between the impeller and case, a Vacuum chamber in the impeller between the suction inlet and the -pressure` chamber, means whereby on the accumulation of an excess pressure 1n the pressure chamber the excess of water therem may .be

axiallyadjustable tubular plug within the discharged through the vacuum chamber nto the pump decharge' and-extero'r te the In testimony whereof I ha e hereunfo set suction passages 111 the mpeller, and means my hand in the presence of two subscribing including an-adjustable plug fixedinline with Witnesses.

one of the dischal ges and va rying said dis- WALTER L. FORWARD. charge automatcally in response to the de- Wtnesses: V gree of end movement of the 'unner for regu V Gr. A. DUBOIs,

lating said excess' pressure. W. D. WA'L'SON.

flopies of this patent may be obtained for five cents each, by 'addressing the Commissioner of Patents,

Washington, D. C. 4

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