US1816731A - Oil well pump - Google Patents

Description

2 Sheeis-Shegt 1 y 1931- J. B. HAWLEY, JR

I 0 11, WELL PUMP Filed Feb. 10, 1930 v a g n 5 m 1| II w 2 Sheets-Sheet 2 J. B. HAWLEY, JR

01L wnm. rump I Filed Feb/10, 19:50

July 28, 1931.

- Patented July 28, 1931 JOHIV B. HAWLEY, JR., MINNEAPOLIS, MINNESOTA OIL WELL PUMP Application-fil ed February 10, 1930. Serial No. 427,864.

This invention relates to improvements in well pumping -,units, and particularly with deep-well pumping units wherein the unit.

motive power is derived from an electric motor in direct connection with the pumping element, as disclosed in my prior Patent No. 1,641,329, issued Sept. 6, 1927.

In oil well pumping units, the use of a centrifugal pump involves the utilization of the entire relatively restricted space enclosed within the casing walls, and such structure does not permit of the passage of the current wires through the pump body, as shown in my patent above referred to. It is therefore the primary object of this invention to provide means for simply and effectively bringing the wires from the electric motor to the top of the pump.

Other objects of the invention will be made apparent in the following specification, when read in connection with the accompanying drawings forming a part thereof.

In said drawings Fig. 1 is a longitudinal section taken through the upper portion of the pumping Fig. 2 is a similar section taken through the lower portion of the unit.

Fig. 3 is an enlarged sectional detail taken through the top portion of the casingr adjacent the exit end thereof.

ig. 4 is a section on the line 44, Fig. 1, and,

Fig. 5 is a section on the line 5-5, Fig. 1..

Now referring specifically to the drawings, in which like reference numerals indicate like parts throughout theseveral views, 1 indicates the pump casing provided with an electric motor 2 at the bottom, as best illustrated, somewhat conventionally in Fig. 2. The motor 2 is operatively mounted on of the shaft 3 being 'hel a hollow, rotatable shaft '3 extending centrally therethrough, and positioned in the axial center of the casin the lower end in anti-friction bearings 4, supported by .the head 5, suitably connected to the casing 1.

The shaft 3 extends upwardly above the motor 2 and is operatively connected,-

through a coupling member 6, to a pump 7,

provided with impellers or vanes 8 so posed as to draw liquid into the pump through a screened inlet 9, and to force it through an outlet 10 into a conduit. 11, leading to the top of the well.

Located within the shaft 3 is a tube 12 spaced from and fixed against rotation with said shaft. The lower end of the. tube 12 rests on a plate 13, and in one side of the lower periphery of the tube is provided a suitably packed aperture permitting the entrance of the current wires 14 thereinto. The wires 14 are of course operatively connected to the motor and are first extended downwardly therefrom, through the nonrotatable section 5 of the bearing member, and into the tube 12 and up to the top thereof.

Near the top of the casing 1, as here shown, is provided a suitably mounted spider plate 16, having a conduit 17 extended through oneof its branches 18, and the upper end of the tube 12 is apertured in registration with said conduit, so that it may pass throu h a side wall of the tube 12, and throng the conduit 17 for connection to a source of ower.

The top'of tlie tube 12 is provided with suitable packing material 19 here illustrated as a plurality of packing washers 20,.such packing preventing the emission, through the port in the side wall of thetube 12, of

any lnsulating or lubricating oil, and a plug or cap 21 is screwed into the top of the tube. From the foregoing it will be manifest that when the motor 2 is energized, the

shaft 3 is rotated to draw liquid through the port 9 and through the outlet 10, but that the tube 12 always remains stationary, the assembly providing a safe and effective .shield for the wires, with no sacrifice of appended claims.

I claim 1. A cylindrical casing having a pump therein, an electric motor in-said casing below the pump and adapted to actuate the latter, a non-rotative tube concentrically mounted within the casing and extending through the motor and pump, and electric wires operatively connected to said motor and extended upwardly through said tube.

2. A cylindrical casing having an electric motor mounted therein, a pump above said motor, a rotating shaft for said motor disposed axially within the casing and adapted to actuate said pump, a tube fixed against rotation and disposed axially within said shaft, and electric wires connected to said motor, extending into and through said tube and projecting through lateral openings provided in each end of the tube.

3. A cylindrical casing having an electric motor mounted therein, a rotatable shaft carried by the motor and extending axially of the casing, a pump mounted above the motor and operatively connected to the shaft, a fixed tube extending longitudinally through the shaft, and electric wires connected. to the motor, extending longitudinally through the tube and laterally projecting through anopening provided at each end of the latter. 7

4. A casing having an electric motor mounted in the lower portion thereof; a hollow shaft secured to and rotated by the motor, a pump positioned above the motor and operatively connected to said shaft, a fixed tube located concentrically within said shaft, and electric wires operativelyconnected to the motor and extendinglongitudinally through said tube and out of the upper end of the casing.

In testimony whereof I hereunto afiix my signature.

- JOHN BfHAWLEY, JR.-

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