US1772778A - Deep-well turbine-pump drive - Google Patents

Description

R. M MAGNUSON 1,772,778

DEEP WELL TURBINE PUMP DRIVE Filed March 25, 1929 10 j j z \F V L R.MMgnLLs/n Q $2.3m

ATTORNEY Patented Aug. 12, 1930 I '7 UNITED STATES PATENT OFFICE BOY M. MAGNUSON, 0F STOCKTON, CALIFORNIA, ASSIGNOR TO STERLING PUMP WORKS, OI STOCKTON, CALIFORNIA DEEP-WELL TURBINE-PUMP DR VE ferent sizes, and consequently having differeut shaft lengths, can be mounted on one pump head without having to remove or alter the length of the pum shaft; which will maintain a close couple connection .between the shafts so that the height of the head as a whole is kept as small as possible; one in which the torque or driving load on the pump shaft is taken by the lower motor bearing, while the weight ofthe load is supported by the upper motor bearing, thus avol ing placing all the strains and loads on one bearing; and one which while using a hollow-bore motor sh aft is so arranged that the finished bore in the motor shaft 1s only at the lower end thereof, thus reducing the cost of making this shaft over what is necessary when the bore must be finished throughout and the pump shaft projects entirely throu h such bore, as is now usually the case with hollow motor shaft drives. i

A further object of the invention is to pro duce a simple andinexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed.

These objects I- accomplish by means of such structure and relative arrangement of parts-fies will fully appear by a perusal OI the following specificatlon and claims.

The figure on the drawing is a sectional ele vation of a pump head showing my improved shaft driving arrangement.

Referring I now more particularly to the characters of reference on the drawings, the pump head" comprises an upper casing portion 1 in which the motor is mounted, and a lower casing portion 2 forming the discharge head and in which the laterally extending discharge passage 3 from the well casing [is formed. The pump shaft 4 as usual projects upwardly through a bearing and stuffing gland 5 in the outlet 3 to a termination a short distance above the bottom of the electric driving motor 6 which is mounted in the upper casing l.

The shaft 7 of the motor to which the rotor R is fixed is supported at its upper end above the motor by a ball-bearing 8 and at its lower end by a similar bearing 9, both bearings being mounted in and supported by the head.

The shaft 7 is hollow from top to bottom and at its lower end is bored as at 10 for only sufiicient length and of such size asto slidably receive the adjacent end of the pump shaft thereinfor a short distance. The pum shaft and bore are key-slotted to receive the riving key 11.

The bore 12 of the motor shaft above the bore 10 is relatively small, being, only of sufficient diameter to freely receive a tension rod r It will also be seen that the weight of the pump shaft is carried by the up er bearing 8 through the tension rod 13 Wl'llCYl is supp0rted by the upper end of the motor shaft'and from which the The rod being ad uStable enables the ump shaft to be raised or lowered a certainlimited distance, as may be necessary to properly adjust the same relative to the motor Without disengaging the shafts from each other.

It will be seen further that if it is desired to mount a different sized motor in conriection with the same pum shaft the only part to be changed, if at a l, is the tension rod 13. This rod is obviously of a relatively inexpensive nature and even such change would not be necessary .if the difference amp shaft is} suspended.

in the length of'the motor shaft is small, since such difference can be taken up by adjustment of the nuts 14: or by altering the extent to which the-rod engagesthe pump shaft.

With any such change of motor the pump shaft engages the motor shaft to the same longitudinal extent at all times, since the lower end of the motor shaft has a fixed relation to the bottom of the-casing 1 at all times.

The form of drive connection between the shafts permits the space between the gland 5 and the lower end of the motor shaft to be reduced to a minimum so that the structure may be kept very compact as to height, as is desirable, without interfering with the adjustment of the gland cap when necessary.

' Since the relatively large hole in the motor shaft is only at its lower end, and since only this portion need be accurately reamed, it will be seen that the cost of borin or drillring the hollow shaft is much less than when the large and finished bore must be extended throughout the length of the shaft.

From the foregoing description it will be I readily seen that l have'produced such a device as substantially fulfills the objects of the invention as set forth herein.

,While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may-be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

I claim 1. In a deep well turbine pump drive, a

pump shaft, a drive shaft vertically alined with the pump shaft and being bored out at its lower end to slidably receive the upper end of the shaft therein in driving relation therewith, and a tension rod projecting upwardly through the drive shaft from and connected to the pump shaft, and means supporting said rod from the upper end of the drive shaft.

2. In a deep well turbine pump drive, a pump shaft, a tension rod secured to and extending upwardly from the same, a hollow drive shaft into the lower end of which the pump shaft extends in driving engagement, the rod projecting to the top of the drive shaft, and means on the upper end of the rod for supporting the same from the top of the drive shaft; said rod being removable from the pump shaft whereby a drivev shaft and a rod of difierent lengths may be used in connection with the same pump shaft without altering the extent to which the pump shaft projects into the drive shaft.

3. ln a deep well turbine pump drive. a pump shaft, a tension rod secured to and extending upwardly from the same, a hollow drive shaft into'the lower end of which the pump shaft extends in driving engagement. the rod projecting to the top of the drive drive shaft;,said rod being relatively small compared with the pump shaft whereby the bore of the drive shaft through which said rod projects may be correspondingly small.

4. In a deep well turbine pump drive, a pump shaft, a hollow drive shaft above and alined with-the pump shaft, means connecting the adjacent ends of the shafts in driving but longitudinally adjustable relation. and means connected to the pump shaft and projectin upwardly throu' h the hollow drive shaft to a point above't 1e same for enabling the pump shaft to be adjusted relative to the drive shaft from a point above the latter.

In testimony whereof I afilx my signature.

ROY M. MAGNUSON.

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