US2003004A - Hydraulic pumping unit - Google Patents

Description

May 28, 1935. J, WMC UAID 2,003,004

HYDRAULI PUMPING UNIT Filed Nov. 22, 1933 5 Sheets-Sheet 1 Maylz8rl935- u. w; MQQUAID 0 2,003,004 v Y HYDRAULIC PUMPING UNIT Filed Nov. 22, 1955 S'Sheets-Sheet 5 my I A rnmmfv y 3 J. w. M QUAID 2,003,004

HYDRAULIC PUMPING UNIT Filed Nov. 22, 1953 5 Sheets-Sheet 4 wn'usss: yg. A'r- ronutv y 8, 3 1 J. w. MCQUAID 2,003,004

' 'HYDRAULIC' PUMPINGQUNIVT 1 Filed Ndv. '22, 1933 Ballasts-sh et 5 j Patented May 2 8.1935 7 i r I I I I 2,003,004 in .mzpaimuc PUMPING UNIT flames W. hfcquaidgoverton, Tex.

. AppiicflionNovember zz, 1933. ,Serial n taazrs I I "'j'icmimx wiso -sas l a 'Ihis invention relates-to a hydraulic pumping which are in connected to the hydraulic unit and has for the primary object theprovision Jacks 2. 'l'hestems of the pistons have heads ll of a device of the above stated character whereby to which are journaled the'zouter'ends of connect a seriesio'f well pumps may be successfully and ing rods I The connecting rods extend through economically operated through hydraulic .pump slotsii into the crank case and are pivotally-con- 5 Jacks operated from a singlehydraulicvunit or nected to an anti-friction medium IS'formingi-Ta pump driven by -.a power source. 1' 1; part of an eccentric IS. The eccentric is secured Withthese'and otherobjects in view this in to the power shaftl. The anti-friction vention consists in certain novel-features of'conkis-in the formof inner andouter races l0 struction, combination and arrangementof parts balls interposed between said races and the inner l0 to be hereinafter more fully described and claimed. race is suitably connected tothe periphery of the For a complete understandingof my invention, eccentric and'the outer race has pivoted thereto referenceis totbe had to'the following description vthe inner ends ofthe connecting rods. 'I'hero- 'andaccompanying-drawings; in which, i tation of, the power shaft 8 will impart recipro- ,15 Figure l is a topplan view illustrating ahycation toithe pistons through the eccentric i0 and draulic pumping unit constructed in accordance "the connecting rods: The cylinders and pipes are with my invention. filled. with a fluid and this iluid is caused by the Figure 2 is a vertical sectional view illustrating reciprocation of the pistons to move back and the hydraulic unit or pump. forth through the pipes i2 for the purpose of op- Figure3 isaside elevation illustrating the same. crating the hydraulic jacks which will hereo Figure 4 is a sectional-view taken on the line inafter more fully described. 4-4 of Figure 2. ;-5.Each hydraulic jack consists of a cylinder 20 Figure 5 is a fragmentary side elevation partly removably secured to the top plate 2| of a supin section illustrating a iluid recharging pump. port 1,! and the latter besidesconsisting 'of the as Figure 6 is a front elevation partly in section plate 2| also includes legs bolted or otherwise 2 illustrating the same. secured to a base plate 23 mounted upon a foun- Figure 7 is a horizontal sectional view showing dation 24 located at the mouth of the well and the manifold connection between the cylinders of through which the ordinary pump rigging 2! opthe recharging pump and its connection with the crates." A piston, 20 is reciprocally mounted in fluid pipesof the hydraulic unit. the cylinder 20' and the stem thereof extends a Figure 8 is a front elevation illustrating one of through the upperend of-said cylinder by way the hydraulic jacks. of a packing gland I1 and carries a head 28. to

Figure 9 is a side elevation illustrating the same. which are iournaled connecting rods 20, the lower Figure 10 is-a sectional view taken on the line ends of which are secured to a beam 30 suitably l0-l0 of Figure 9. J secured to the pump rigging 25 so that upon re- 35 Figure 11 is a fragmentary sectional view musciprocation of the piston 20, a corresponding trating a cylinder and piston of the hydraulic jack movement will be imparted to the pump rigging. and a safety device applied to the cylinder. The cylinderfll has a part II to which one of Referring in detail to the drawings, the numeral the pipes liiflconnected. When the fluid in one 40 l indicates a hydraulic unit or device for actuatof the cylinders of the unit I is displaced thereing a series or plurality of hydraulic pump jacks from, said fluid will be forced into the cylinder 2 and the hydraulic unit -i consists of a base 3 20 of the pump-jack connected to the respective suitably mounted on a foundation 4 and formed cylinder of said'unit which will cause a movement integrally with a crank case 5 ot'cylindricalforof. the piston of the pump jack in an upwardmation having removable end plates which rotatdirection which carries therewith the pump riga ably support a power shaft 6 carrying at one end ging in an upward direction. Upon the movea pulley 'I or any other suitable medium for con ment of the piston 01 the unit I outwardly of its necting the power shaft to a powersource (not respective cylinder the piston of the pump jack shown). Extending radially from the crank case is lpiermitted to move downwardly in its respective 5 are cylinders 8 which are bolted or otherwise cy nder under the weight'of the well rigging 50 secured to the crank case and each is equipped connected thereto.

with a piston 9 and the stem of the latter extends A reservoir 02 is. mountedpn the crank case.

outwardly through the outer end of the cylinder 5 of unit I- and has a. feed pipe ll connected by way of a packing gland ii. The inner ends of thereto which is in turn connectedto a distribut as a the cylinc i ers have ports ll connected to pipes l2 ing head 34 and the latter is carried uponand u" g connected to a manifold 35, and the latter connects pump cylinders 35. The pump cylinders are located at opposite sides of one of the cylinders 8 of the unit I and have reciprocally mounted therein pistons 31, the stems of which are con-' nected to the head |.3.,of the piston of the respective cylinder 8 of the unit l. The distributing head 34 has a pipe 38 connected thereto which is in turn connected to a manifold 39 provided with branches 40, which are connected to. the pipes i2 and said branches have "cut-off valves 4i therein. A check valve 40 is located in the pipe 38 to prevent back pressure in the manifold 39 from entering the distributing head-34. The head 34 is equipped with check valves 42 and 43.

The check valve 42 permits'fluid from the res-i ervoir 32 to be drawn into the manifold 35by the pump while the check valve 43 permits said fluid to be exhausted from the manifold'35 to the manifold 39 by way of the pipe 38 and into the pipes I! when the valves 4| are opened. With this arrangement the hydraulic system can be at any time replenished with fluid.

' A suitable bypass means 46 maybe provided between the reservoir 32 and the manifold 35 whereby the; fluid may be bypassed back to the reservoir when the system or the pipes I 2 thereof are properly filled with fluid and the valves closed.

Each hydraulic jack or thecylinder thereof is provided with a port 44 to which a check valve 45 is connected. and the latter is connected to a pipe 46 providing a retumto the reservoir 32.

The port 44 and the check valve 45 provide the hydraulic jack with a. safety device, that. is, should an excessive amount offluid be placed in the system and there would be danger of forcing the piston of the hydraulic jack too far up in its respective cylinder, the piston will uncover the port 44 before reaching a point in the cylinder that would endanger-the construction of the head of'the cylinder by the'piston so that the excessive amount of fluid may pass to the pipe and return to the reservoir.

' Having described the invention, I claim:

- X hydraulic transmission system comprising a series of hydraulically driven elements, pipes connected to said elements, hydraulic cylinders grouped radially with respect to one another and each connected with one of said pipes, pistons operating in said cylinders, a common'crank case supporting said cylinders, a power shaft jour naled in'said crank case, means between the pistons and the power shaft to reciprocate said pistons, a supply reservoir mounted on the crank case, fluid release'means for said driven elements and connected to said reservoir, pumps mounted on one of said flrst named cylinders and actuated by the, piston of the latter, a manifold, means connecting said pumps'to the reservoir and to the pipes, check valves for said manifold means, and a manually controlled bypass means connected to the manifold means and to the fluid release means adjacent thelatters connection to the 'reservoir.

JAMES W.- MCQUAID.

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