US1929077A - Deep-well turbine pump - Google Patents

Description

Oct. 3, 1933. 1 w. E. ROSE 1,929,077

DEEP WELL TURBINE PUMP Filed April 25, 1930 2 Sheets-Sheet l Z" INVENTOR. MAL/4M5 665 BY @mwww A TTORNE Y Oct. 3, 1933. w. E. ROSE DEEP WELL TURBINE PUMP Filed April 25, 1930 2 Sheets-Sheet 2 m: Wm

N5 WN w? mm MA MAL/14M f" Patented Oct. 3, 1933 DEEP-WELL TURBINE PUMP William E. Rose, San Diego, Calif.

Application April 23, 1930. Serial No. 446,550

7 Claims.

My invention relates to deep-well turbine pumps, and the objects of my invention are:

First, to provide a pump of this class in which the impellers may have a maximum diameter for the well casing in which the pump fits, thereby increasing the amount of pressure which may be produced by each stage of said pump;

Second, to provide a pump of this class in which the impellers may be mounted with plenty of 10 clearance so as to permit sand or the like to pass without wearing or cutting the impellers or the parts adjacent thereto, and yet operate effectively;

Third, to provide a pump of this class in which back pressure upon the impellers is reduced to a minimum, as bafile means prevent the weight of the water above said impellers from being imposed directly thereupon;

Fourth, to provide a pump of this class in which the impeller blades are arranged not only to throw water radially, but also to direct the water upwardly, that is, the impellers propel, as well as impel, the water;

Fifth, to provide a pump of this class having an outer wall which is of constant diameter and free from all projections or indentations so that it may be readily inserted within a well casing;

Sixth, to provide a pump of this class in which the various parts are particularly simple and economical of manufacture;

Seventh, to provide a novel water-lubricated bearing which is particularly adapted for a well pump of this class;

Eighth, to provide a water-lubricated bearing which does not become dry or tend to lock or freeze when the pump is idle and the water has drained from the pump, but which retains sufiicient moisture so that when the pump again begins operation, said bearing remains in a lubricated condition until the pump has raised the water enough to submerge said bearing; and

Ninth, to provide as a whole a novelly constructed deep-well turbine pump which is durable of construction, efficient in its action, and which 46 will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be 50 hereinafter described in detail and particularly setforth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this application, in which: 7

Figure 1 is a fragmentary longitudinal sectional view of my turbine pump; Fig. 2 is a fragmentary sectional view of one of the shaft bearings, showing adjacent portions of the discharge column; Fig. 3 is a bottom view of one of the impellers; Fig. 4 is a top view of the bearing used above the top stage of the pump and its supporting ring; Fig. 5 is a sectional view through 55 of Fig. 1, with the coupling shell omitted; and Fig. 6 is a bottom view of one of the shaft bearings with the expanding plug removed.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings.

Coupling shells 1, intake ring 2, intake webs 3, end bearing 4, drive shaft 5, packing 6, packing (0 nuts '7, impellers 8, inter-stage ring 9, inter-stage guide vanes 10, inter-stage bearing 11, discharge ring 12, discharge webs 13, upper pump bearing 14, reducer 15, discharge column sections 16, couplings 17, shaft bearings 18, webs 19, locking 78 shoes 20, and expanding plug 21 constitute the principal parts and portions of my deep well turbine pump.

The pump is contained within a plurality of coupling shells 1. Each coupling shell is cylin- 80 drical, relatively short, and is provided with internally threaded portions 'la adjacent its end. The lower shell, which is shown fragmentarily in Fig. 1, is connected at its lower end to a suitable strainer, not shown. Its upper portion is 86 connected to an externally threaded lower end 2a of an intake ring 2. The outer periphery of the ring 2 is externally threaded except for an annular ridge 2b which fits over the upper end of the shell 1 and extends flush with the outer periphery thereof. The threaded portion 20 of the collar above the ridge 2b, is screw-threaded into the lower end of a second coupling shell.

The inner periphery 2d of the intake ring 2 forms a substantially conical face, having its largest diameter at the lower end of the intake ring, and its smallest diameter near the upper end of said ring, as shown best in Fig. 1.

Supported concentrically within the ring 2, by means of radiating webs 3, is an end bearing 4, in which is journalled the lower end of a drive shaft 5. The major portion of the bearing 4 is spaced apart from the shaft 5, and is filled with a packing 6, which is capable of absorbing water. The one end of the bearing, preferably the lower end, is internally threaded so as to receive a packing nut 7.

The side walls of the bearing 4 are provided with a plurality of narrow axially extending slits, or other suitable apertures, 4a, which 9.1-

low water to come into contact with the packing 6 and be absorbed thereby and act as a lubricant. At the same time, the packing prevents sand or dirt contained in the water from coming in contact with the shaft.

Mounted upon the shaft above the bearing 4, is an impeller 8, which comprises a hub portion 8a, joined to a flange portion 8b at its up er end, as shown best in Figs. 1 and 3. Extending out from the hub 8a, along the under side of the flange 8b, are a plurality of impeller blades 80. The impeller blades are integral with the hub 8a and the'flange 8b. The impeller blades extend spirally from the hub to the margins of the flange 8b. The transverse axis of each impeller 8c is disposed relative to the axis of the shaft 5 so that the upper portions of the impeller blades adjacent the flange 8b, lag behind the lower or extended margins of said impellers, whereby water discharged therefrom not only tends to pass radially, but also to pass axially and upwardly.

The upper face 20 of the collar 2 extends into contiguous relation with the lower margins of the impeller blades so as to form with the flange 8b a passage through which the water must travel. The periphery of the impeller 8 is spaced apart from the inner walls of the corresponding coupling shell 1, and is opposite the portion of the coupling shell between the threaded portions 1a thereof.

Above the lower impeller 8 is an inter-stage ring 9, similar in construction to the intake ring 2, having externally threaded portions 9a and 9c, separated by a ridge 9b, thus forming a connecting link between adjacent coupling shells 1. The inner periphery 9d of the inter-stage ring 9 is substantially conical having its lesser diameter at the upper portion of the ring.

Supported in concentric relation with the inter-stage ring 9, by means of inter-stage guide webs 10, is an inter-stage bearing 11. The inner periphery of the bearing 11 is similar to the bearing 4, being spaced apart for its major portion from the shaft 5, and the space thus formed filled with packing 6. The bearing 11 is provided with slits 11b therein, which allow water to come in contact with the packing.

The upper end of the bearing 11 is internally threaded and receives a packing nut 7. The upper end of the bearing 11 is below the upper face of the inter-stage ring 9. The outer periphery of the bearing 11 increases in diameter towards its lower end, at which end it flares outwardly, forming a skirt 11a of a diameter approximately equal to the flange 8b, of the impeller. The upper face of the flange 11a slopes upwardly at a considerable angle, and gradually merges into the normal outer surface of the bearing 11, thus forming a smooth inner wall for the passage leading from the lower impeller 8.

Mounted in contiguous relation to the upper face of the inter-stage ring, is a second impeller 8, identical in construction to the lower impeller.

Above the second impeller 8 additional interstage collars 9, and other impellers may be added, the number of stages depending upon the height which the water is to be lifted. In the structure shown, only two stages are illustrated as any additional stages are merely duplication of the parts already described.

Above the collar 1 surrounding the upper impeller 8 is a discharge ring 12, having externally threaded upper and lower portions and 12a separated by a ridge 12b. The lower, externally threaded portion 12a is screw-threaded into the upper end of the upper coupling shell 1.

The inner periphery 12d of the discharge ring 12 is as large as possible, and of a constant diameter. Supported in concentric relation to the ring 12, by means of radiating discharge webs 13, is an upper pump bearing 14, identical in construction with the bearing 11, having a flared lower skirt portion 14a, which fits over the impeller 8, and which is provided with slits 142) which allow water to penetrate through the packing 6.

The inter-stage vanes 10 and the discharge vanes 13 are curved substantially helically at their lower portions 10a and 13a, respectively, so as to guide the helically moving water from the impellers into the axially extending upper portions 10b and 13b of the vanes, so that axial flow of the water is facilitated.

Secured to the upper portion 120 of the discharge ring 12, is a reducer 15, the upper end of which is secured to the lower discharge column section 16. The discharge column sections extend to the top of the well, and are joined together by internally threaded coupling members 17, as shown in Fig. 2.

At the joint between each pair of discharge column sections 16, a shaft bearing 18 is provided, having a greater inner diameter than the shaft 15, and separated therefrom by packing 6.

Similar to the other shaft bearing, the bearing 18 is provided intermediate its ends with a plurality of slits 18a, which allow water to come in contact with the packing 6. The upper end of each shaft bearing 18 is provided with a packing nut '7.

The bearing 18 is provided with other slits 18b arranged between certain of the slits 1801., the slits 18b intersecting the lower end of the bearing, dividing the lower portion of said bearing into a plurality of arcuate segments 18c, as shown best in Fig. 6- Each segment 180 is provided with a radially extending web 19, which is secured intermediate the ends of a segmental locking screw 20. 0 The several locking screws 20, together, form a ring concentric with the axis of the shaft 5. The locking screws are provided with external threads 20a, which are adapted to coact with the internally threaded portion of the collar 17, between the adjacent ends of the discharge column sections 16, as shown in Fig. 2.

The lower end of the shaft bearing 18 is provided with an internally threaded tapered portion 1811, in which is adapted to fit a tapered clamping plug 21. When said plug is screwed into the bearing 18, the several locking screws are forced flrmly against the periphery of the coupling 1'7, and securely hold the bearing in place.

Though I have shown and described a particular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invention the-construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters 145 Patent is:

1. In a well pump, a plurality of threaded coupling shells, a plurality of threaded ring means joining said coupling shells, a drive shaft, a plurality of bearings for said shaft supported from 150 said ring means, impellers within certain of said coupling shells and between certain of said ring means, and packing means within said bearing and surrounding said shaft, the walls of said bearings provided with apertures therein, whereby water passing through said pump comes in contact with said packing, and is absorbed thereby so as to lubricate said bearing.

2. In a well pump, a train of spaced threaded cylindrical coupling shells, a plurality of threaded ring means linking said shells, a drive shaft, a plurality of bearings therefor, web means supported by said bearings within said ring means, impellers mounted upon said shaft within certain of said coupling shells and between certain of said ring means, the adjacent walls of said ring means and said bearings forming the boundaries of water-conducting passages leading to, extending between, and issuing from said impellers, and packing means within said bearing and surrounding said shaft, the walls of said bearings provided with apertures therein, whereby water passing through said pump comes in contact with said packing, and is absorbed thereby so as to lubricate said bearing.

3. In a pump of the class described, a train of spaced threaded cylindrical coupling shells, a plurality of threaded ring means linking said shells, a drive shaft, a plurality of bearings therefor, web means supporting said bearings within said ring means, impellers mounted within certain of said coupling shells andbetween said bearings, certain portions extending from corresponding ends of certain of said bearings to the outer margins of said impellers, the outer peripheries of said certain portions and the bearings provided therewith forming the inner walls of passages communicating between said impellers, said ring and said coupling shells forming the outer walls of said passages, and packing means within said bearing and surrounding said shaft, the walls of said bearings provided with apertures therein, whereby water passing through said pump comes in contact with said packing, and is absorbed thereby so as to lubricate said bearing.

4. In a pump of the class described, a plurality of spaced apart threaded ring members, threaded coupling shells joining said ring members, a driving shaft extending through said ring members and said coupling shells, a plurality of bearings therefor, integral webs supporting said beai ings from said ring members, each of said bear ings extending below the corresponding ring members and flared at its extreme lower portion forming an annular fin, said ring members constricted at their extreme upper portions, forming with the lower faces of said flared portions impeller-receiving chambers, and impellers mounted in said chambers and secured to said shaft.

5. In a pump of the class described, a plurality -of spaced apart threaded ring members, threaded coupling shells joining said ring members, a driving shaft extending through said ring members and said coupling shells, a plurality of bearings therefor, webs supporting said bearings from said ring members, said bearings extending below the corresponding ring members and flared at their lower portions, said ring members constricted at their upper portion, forming with the lower faces ofsaid flared portions impeller-receiving chambers, and impellers mounted in said chambers and secured to said shaft, and packing means within said bearing and surrounding said shaft, the walls of said bearings provided with apertures therein, whereby water passing through said pump comes in contact with said packing, and is absorbed thereby so as to lubricate said bearing.

6. In a well pump, a plurality of coupling shells, a plurality of ring meansjoining said coupling shells with their inner walls converging upwardly to their extreme upper ends and provided with extended web portions integral therewith, and bearings positioned centrally in said web portions and integral therewith, a drive shaft mounted in said bearings and impellers within certain of said coupling shells and between certain of said ring members.

7. In a well pump, a plurality of coupling shells, a plurality of ring means joining said coupling shells, each ring means provided with inner walls converging upwardly to their extreme upper ends and with webs extending inwardly therefrom and bearings integral with said webs, sai'd bearings provided with flanges on their extreme lower ends extending outwardly near the inner surfaces of said coupling shells.

WILLIAM E. ROSE.

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