Патент USA US2090676код для вставки
Aug. 24, 1937. H. M. HALLGARTH 2,090,676 MOTOR FOR DEEP WELL PUMPS Filed Sept. 3, 1935 2 Sheets-Sheet l \ — Q: I 29 ___"_'( /—__-__________ Fig. 2. INVENTOR. HORACE M. HALLGARTH 6 Aug- 24, 1937. H. M. HALLGARTH 2,090,676 MOTOR FOR DEEP WELL PUMPS Filed Sept. 5, 1955 2 Sheéts-Sheet 2 \ Fig.4. 4? - M f\ _INVENTOR. 24 HORACE M. HALLQARTH BY ATTORNEY. Patented Aug. 24, 1.937 2,090,676 UNETED STATES PATENT OFFIQE 2,090,676 MOTOR FOR DEEP WELL PUMPS Horace M. Hallgarth, Galva, Kans. Application September 3, 1935, Serial No. 38,865 1 Claim. (Cl. 121-159) My invention relates to improvements in pump jacks. hydraulically operated for each well substantial The object of my invention is to provide a pump jack having a long stroke, hydraulically oper ated with automatic control for continuous pump 5 ing and adaptable to oil well service. A further object of my invention is to pro vide a simple and e?‘lcient means to disengage any one or more of a group of pumps along the power line in an oil ?eld without interruption 10 of pumps chosen to continue their function. A still further object of my invention is to provide means to return the ?uid such as oil or gas to storage after being used to operate the pumps, by which means excess waste of ?uid is 15 avoided. These and other objects will hereinafter be more fully explained reference being had to the accompanying drawings forming a party of this speci?cation and in which like characters will 20 apply to like parts in the different views. Referring to the drawings:Fig. 1 is a front view of the pump jack mech anism. Fig. 2 is a plan View with counter balance re 25 moved. capacity I have arranged a long stroke motor - Fig. 3 is a view of the yoke carrying element for the polish rod as modi?ed. Fig. 4 is an enlarged view *of the pump jack, parts removed for convenience of illustration. Fig. 5 is a fragmentary plan view of the trip valve lever. Fig. 6 is a fragmentary plan view of one end of the lower valve link coupling. Fig. '7 is an enlarged sectional View of the valve 35 at the base of the two cylinders, the ports in feed position. Fig. 8 is an enlarged sectional view of the valve controlling the trip of the valve shown in Fig. 7, the port in feed position. My invention herein disclosed consists of a pair of cylinders l--l spaced apart and seated on a suitable foundation 2, centrally bored in axial alignment to receive a casing 3 of an oil well extending upward through the bore and having 45 on the upper end thereof a conventional type of stu?ing box 4, through which the polish rod 5 will work reciprocatingly with a smooth running ?t as actuated by the said cylinders. Extending through the oil ?eld is a high pres sure pipe line from which laterals may extend to the various oil wells in the ?eld, at which points are positioned pump jacks to force the oil into the pipe lines, conveying the same to 55 market or storage and to increase the pumping 1y as shown in Figs. 1 and 2. Extending from the laterals or main pipe line as the case may require, is a pipe 6 extending upward and toward the cylinders, connecting to the base of each by pipes l and 8 as conductors for compressed ?uid into said cylinders. Positioned in each cylinder is a piston 9 hav ing a rod 10 centrally connected and extending upward and outward through the upper head of 10 the cylinder; theupper ends of the rods are con nected by a yoke H and to which the said polish rod is attach-ed and subject to being raised when the pistons are exercised by forcing ?uid in at the base of each cylinder simultaneously through the action of valves later described, the said valves also control the exhaust of the ?uid for the return stroke of the polish rod that is grav ity actuated and each stroke automatically con trolled as follows: 20 In Fig. ’7 is shown the valve control for cylin ders l—l, the port position is for the exhaust of said cylinders and by turning the port core 90 degrees ‘in the direction of the arrow, the ex haust ‘will close, turning in the supply for said cylinders to raise the polish rod. In Fig. 8 is shown the trip valve control, the port position as shown is to energize the trip mechanism which in turn will actuate the said cylinder valve as above described. When the core as shown in Fig. 8 is turned 90 degrees in the direction of the arrow the supply will cut off to 30 allow exhaust of the trip compression tube. Positioned in working relation to- the valves and cylinders is a valve trip consisting of a tubu 35 lar element l2 having a head to close each end thereof, the upper head has a pipe l3 connected thereto and a valve M positioned therein, the lower head is bored axially with the tube so that rod [4’ will‘slidably engage therein, the said 40 rod has secured to its upper end a piston I5 adapted to engage in the said tube with a smooth, running ?t reciprocatingly. The lower end of the said rod is connected to a valve lever l6 through the medium of a link 45 ll, each end of which is hingedly joined as at A and B to their respective lever and rod, by which means the core of valve I8 is turned to and fro for reciprocating movement of the pis tons of cylinders l-l. The injecting position of the valve core as shown by dotted line C in valve I 8 is accom plished by ?uid compression in tube l2 for down ward stroke of piston 15, the action of which is 55 2 2,090,676 controlled by valve l4, having a lever I9 as turn cured to the other end of the said beam is a ing means therefor and being actuated by rod 20 pendently carried by an arm 2| secured to the yoke and carried reciprocatingly therewith, and is adapted to slidably engage in slot 22 of lever l9, moving the latter downward as stop 23 con tacts therewith opening the said valve simul cable 34 as pendant carrying means for weights 35 to partially balance the weight of the said taneously with the maximum downward stroke 10 of pistons 9. The opening of said valve is means to in?ate tubular element l2 as opening means for valve “5 to inject ?uid into each of the cylinders l-—| through their respective pipe connections previ ously described, and the piston in each cylinder is caused to make its upward stroke and during such stroke the said valve trip is retained to engage ment by the flow or pressure through pipe 24, all of which is accomplished by the valve port’s position as shown by dotted lines in Fig. 4. As the pistons carrying the polish rod there with approach their maximum upward stroke, stop 25 on rod 20 will raise valve lever l9 turning its core port to an exhaust position and closing feed pipe 24, simultaneously connecting exhaust pipes 25 l3 and 26, at which instant piston I5 is released and raised by a coil spring 21 discharging the contents of the said tube through pipes 26 and 28 as the main drain. The upward movement of the said piston l5 will turn the ports in valve [8 to exhaust through pipe 6' into pipe 28, this exhaust being the drain for cylinders l-| that is gravity actuated by the polish rod, should the latter described ex haust force be too great, tending to back up in '- pipe 26, the result of which would be to prema turely actuate the said valve trip, and to over come such action I have placed a check valve 29 in pipe 26 as an emergency for such condition, which at all times will resist excess pressure 40 from cylinders l-—I in their tendency to create pressure in pipe 26 or as above stated. A counter balance is provided for the polish rod through the medium of a beam 30 pivotally mounted on a Sampson post 3|. The said beam is 45 equipped with an arcuated mule head 32 with cable 33 attached and connected to the yoke; se polish rod. In Fig. 3 is shown a modified form for the yoke, transmitting the load of the polish rod to each end thereof, by which means an unequal lift ing power of the cylinders will be partially coun ter balanced, as the load center will move from the weaker cylinder by the rocking movement 10 of the downward extension D, and such other modi?cations may be employed as lie within the scope of the appended claim. Having fully described my invention, what I claim as new and desire to secure by Letters Pa tent is: In a motor‘ of the class described, a pair of cylinders vertically positioned in close prox imity to each other, each of said cylinders hav ing a piston and a rod, the rods having means to connect the outer ends thereof and the said means to carry an oil well polish rod recipro catingly with the pistons as an oil well pump, an oil supply pipe connected to the lower end of each cylinder, a supply and exhaust valve in the [0 01 said pipe, said Valve having an exhaust pipe con nected thereto and the valve core having a lever to turn the same, a tubular oil container as a valve trip and a pipe as supply and ex haust therefor, another similar valve in the last 30 said pipe and a slotted lever to turn the core of the valve, a rod carried by the said piston rods of the cylinders, the said rod to slidably engage in the slot of last said lever as means to alternately turn the core of last said valve oppo 35 sitely to by-pass ?uid alternately to the said trip element, and an exhaust pipe therefor by which means, the lever of the ?rst said valve is ac tuated downward to exhaust ?uid contained in said cylinders, and the said trip element having 40 a spring to oppositely turn the core of the valve to by-pass ?uid under pressure into said cyl inders, all substantially as shown and for the purpose speci?ed. HORACE M. HAILGARTH.