US1057007A - Automatic end-thrust counterbalance. - Google Patents

Description

A. C. PAULSMEIER. AUTOMATIG BND THRUST GOUNTBRBALANGB.

APPLICATION FILED APRS, 1912. @u SQ Patente. Man, 1913.

. 4 f/n l` .A A 4 u UNITED s'rATEs 'ALBERT c. PAULSMEIER, or ALAMEDA,

AUTOMATIC ENDfTHRUST COUNTERBALANGE.

Specification of Application filed April 8,

To alli/whom, t concern Be it known that I, ALBERT' C. PAULs'- MELER," citizen "of the United States, residing -cominggthe end thrust. on the shafts of centrifuga'ljpumps, water turbines, or other apparatus needing a thrust'bearing. 4. Thel invention consists `of the parts and the `combination andV construction of parts 'as hereinafter tmore fully described and r claimed, having reference to theaccompany-` tail in section illustrating the invention.

ing drawing, in which the drawing is a devv A represents ashaft which for the purpose of illustration, is shown-as the shaftof a centrifugal pump, in' whichQ is the impeller ;v 3 .theiimpeller case and 4 the discharge column. kHeretofore it has been proposed to effect an automatic hydraulic counter-balance of limpeller. shafts by a specially de- A -signed' form of` impeller land-case. .In the vpresent invention lan .automatic counterbalance is effected entirelyfoutside the pump case and is-apv licable tothe shafting at any desired point in' its length. 1 c v *The invention comprises .a ring plate 5 keyed, or otherwisesuitably secured to the ring plate 5 into two chambers, one a presshaft A, and revolving in a stationary housing or case 6, which latter is divided by the sure chamber 7 -subject to the uncontrolled pressure ofthe pump discharge, or other i source of supply through asuitable inlet 8;

the other chamber being a variable pressure chamber 9 receiving leakage water from the chamber 7 and discharging it under predetermined conditions controlled by the endwise shifting of the shaft A.

The ring plate 5 has a running joint 10 formed by the annularrim portion 1l of-v plate 5 with anopposite annular ledge or shoulder on the fixed housing 6; this running joint .10 being normal to the axis of shaft The hub 12 of the ring plate 5 on that slde opposite from thechaniber 7 is also `constructed and arranged to provide a part 1 3 having a surface normal to shaft A, adapted PATENT onirica.

CALIFORNIA, ASSIGNOE TO BYRON JACKSON IRON WORKS, OF WEST BERKELEY, CALIFORNIA,

A CORPORATON GF CALIFORNIA.

Letters Patent. Patented Mar.,

25, 11913. 1912. serial No. 689,117.

to co-act with amovable annular plug 14 to form a running joint 15. The leakage Water escaping from the running joint l5 is released at 16 as wastewater. It is by means of these two running joints 10-15 normal the shaft A to carrythe parts ll-l'tcivard and from their respective opposedsurfaces that the desired counterbalance or counterthrust is brought about.

Inoperation the water under full discharge head, or any other head ofrdesired pressure is admitted freely to chamber '4' on the under-side of plate 5. This water in chamber 7creates' an up-thrust; it being understood that the diameter of the plate `5 and the area exposed to this high pressure in chamber 7 is such as would result in the thrust movement described. Under'normal working conditions however, of the invention a certain amount of water leaks through the running joint 10 into the variable pres- `sure chamber 9. In this chamber pressure accumulates yuntil it creates a counter-pres sure suiiicient to bring the parts into equilibrium and the annulus 1 4 can then be adjusted so as to regulate the size' of the running joint 15 with respect to the running rium under workin g conditions of maximum 'eiiiciency Y Under practical Working conditions there is a lilm of'water between the two surfaces constituting each joint; these iilms separat ing the metal suiiiciently so as to carry a load with a mirimum amount of friction. The ring plug 14 is 'made adjustable so as to regulate the amount of endwise shift of the plate 5 and shafting, and also regulating the amount ofwater used for balancing tol most economical advantage..

' Practice shows 'that there is only a very slight Waste cf water, and the revolving disk 5 is held between the two'surfaces in absolute equilibrium.

Wvhile l have shown this form of balance applied to centrifugal pumps, itis manifest that it can be used for .balancing any' apparatus where there is an end thrust in ene di v--rection, or the other, either vertical or hori- Zontal. It is also manifest that the details of construction may be varied without departing in any way from the principle of the invention.

-to the shaft and the lengthwise shiftingof joint 10, and thereby maintain the equilib- Having thus described my invention what I claim and desire to secure by Letters Pat- 'ent is- 1. In an automatic hydraulic counterbalance, the combination of a sha-ft, a source of-water pressure, a differential piston on said shaft, a casing in which said piston operates, said piston partitioning the casing into two chambers, one chamber of uncont-rolled pressure and the other a variable pressure chamber, the first of said charnlbers being in communication with saidy source .of water pressure, the variable pres* sure chamber having communication with the first chamber by means of a running joint formed between the piston and casing, and said variable pressure chamber having a relief 'to an area of lower pressure through a second running joint vformed between said piston and casing, said second running joint including a movable plug forvarying the range of lengthwise movement of the shaft.

2. A counterfbalance for shafting consiste. ing in the combination with a shaft of a disk secured thereon, and a housing for the disk, said disk partitioning the interior of the4 housing into 4two chambers, one a chamy ber of high pressure and the other a variable pressure chamber, the disk` having means cooperating with the housing to form two running joints, both of which are normal to the shaft, one of said running joints being between the chamber of high pressure and the var1able pressure chamber, and `tbe other of said runnin j oints forming the out- :3;: -let for the variable pressure chamber, and

means for varying the distance between said running joints and the amount et leaks@ water therethrough.

3. A. counter-baiance for shafting consisting in the combination with a shaft of a disk secured thereon, and a housing for the disk, said disk partitioning the Ainterior of the Yhousing into two chambers, one a chamber of high pressure and the other a variable v1 pressure chamber, the disk having means cooperating with the housing to form two running joints, both of which are normal to the shaft, one of said running joints being between the chamber of high pressure. and

witnesses.-

ALBERT C. PAULSMEER.. Witnesses:

F. S. HOFFMANN, Gr. H. PowEL.

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