US1573823A

US1573823A - Pump

Info

Publication number: US1573823A
Application number: US59068A
Authority: US
Inventors: Gray Ellsworth
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-09-28
Filing date: 1925-09-28
Publication date: 1926-02-23
Anticipated expiration: 1943-02-23

Description

Feb; 23 1926.

E. GRAY PUMP Filed Sept. 28, 1925 i z gvajgnue'nl'oc Patented Feb. 23, 1926.

UNITED STATES 1,573,823 PATENT ()FFICE.

ELLSWORTH GRAY, F HOUSTON, TEXAS.

PUMP.

Application filed September 28, 1925. Serial No. 59,068.

To all whom it may concern:

Be it known that I, ELLSWORTH GRAY, a citize of the, United States, residing at Houst 11, Harris County, Texas, have invented a certain new and useful Improve-- ment in Pumps, of which/the following is a a pump in which no standing valve at the in a pump barrel adapted to opera lower end of thevpump barrel is necessary. It is also desired to provide a pump which, when either the plunger or the tubing is withdrawn from the hole, will allow the fluid to drain away from the tubing as it is raised.

It is also an object to so arrange the construction of the pump plunger and the pump barrel that no provision for avoiding accumulation of gas in the pump barrel need be made. Other objects lie in the simplicity of the construction whereby it is made economical to manufacture and operate.

Referring to the drawing herewith, Figs. 1 and 2 show the upper and lower ends respectively of a pump plunger embodying my invention.- Said plunger bein shown therewith, 'part of the plunger being shown in elevation. Y Figs. 3 and 4 are'similar upper and'lower sectional views of a pump barrel showing the plunger therein, the parts being shown in aiposition difierent from that shown in Figs. 1 and 2'. Like numerals of reference are employed to designate like parts in all the view A .pump barrel 1 is shown nected within a pump tubing 2 at its upper end and extending downwardly a suitable 1 distance therefrom-and having its lower end closed, as shown at 3. The pump barrel 1 is madein two sections, the lower section 4 being connected with the upper section by .means of a special coupling 5. This coupling-engages with the two sections of the piimp barrelat its upper and lower ends and has between these two connecting points an opening or series of openings (1 to allow the entrance of liquid to the barrel The pump plunger is. provided at'its upper end with a valve cage 7, the upper end of which is'threadedat -8 for engagement with the sucker rod 9.. The valve cage is of ordinary construction, having a valve seat as being conr 10 therein in which is placed a ball valve 11. i

The valve cage is connected to a short nipple 12 which is threaded at its lower end for connection with the upper head 13 of the body of the plunger. Upon the nipple 12 are spaced a series of cups l4 spaced apart by spacing sleeves 15. This construction is the ordinary type of packing cup arrangement ordinarily used in pump plungers and need not be further described. The body 16 of the pump plunger is elongated so as to space the lower end 17 a predetermined distance from the cups at the upper end thereof. The said lower head 17 is enlarged as shown in Figs. 2 and 4 and the lower end is again reduced in diameter, thus leaving a downwardly tapered shoulder 18 thereon. Below the shoulder the reduced portion 20 is provided with longitudinal slots 21 therein adjacent the shoulder to allow the inlet of fluid to the central passage 22 through the slots. The lower end of the reduced portion 20 [is threaded for engagement with a nut 23, the upper end of WlllCh provides a shoulder 24 to limit the downward movement of the slidable valve 25.

The valve 25 is slidable on the reduced portion 20 between the two shoulders 18 and 24. It comprises a sleeve of metal having a fiarmg recess 26 in the upper end to fit against the tapered shoulder 18. It has a close sliding fit over the piston barrel 20 and has on its outer face a series of packing cups 27. These cups are of leather or other composition held in place on the outer face of the valve by being clamped between a nut 28 and the spacing sleeve 29 and the body of the valve.

The operation of the valve is exceedingly simple. The openings 6 in the pump barrel which allow the inlet for the liquid is arranged to lie between the upper and lower ends of the piston .during the operation thereof, and on the downward stroke the upper packing means 14 will not pass this opening and on an upward stroke the lower valvf member 25 will also not pass the opening. Figs. 1 and 2 show the position of the parts on the upward stroke of the plunger. The valve 11 will be seated on this stroke and the packing 'means 14 and 27 will exert a suction effective upon the space below the plunger. The valve will dro and be seated upon a shoulder 24 leaving tie openlngs 21. free. The suction will therefore .draw the oil in through the opening 6 in, the barrel and through the openings 21 in the plunger to the space below the plunger. On the downward stroke the oil in the space below the plunger will be prevented from passing out through the openings 21 by the valve which will be thrown'into position shown in Fig. 4, closing the openings 21, and the oil will thereby be forced upwardly through the passage 22 in the plunger raising the Valve 11 and passing on upwardly into the pump barrel. The friction of the valve 25 with the pump barrelwill cause it 'to stay in any one position therein except when forced fromthat position by contact with the shoulders 18 0e24,. It will be] noted that this pumping action is exceedingly simple. No standingvalvc is required and the working parts may all be withdrawn from the pump barrel when the sucker rod and plunger are removed. It will be seen on reference to Fig. 1 that the tubing 2 is I of slightly larger diameter than the pump barrel. Therefore, when the plunger is withdrawn the fluid above the plunger will find a passage downwardly past the plunger as soon as it enters the tubing. Also when the tubing is then to be withdrawn the opening 6 will allow the liquid in the barrel to flow out as the tubiiig is raised, thus d ver coming the usual difficulty bf handling'the tubing while it is full of oil. Another advantage in this type of plunger lies in the manner in which gas is prevented from interfering with the operation of the pump. No gas anchor or other similar device'is necessary. If any gas from-the well passes through the openiigg 6, it will'tend torise upwardly in the pump barrel to fill the. space below the packing 14:. On the downward stroke of the plunger this'gas will again be forced downwardly to the opening and there escape. The'further ad,- antages in the simplicity of construction and ease of operation will be apparent to those skilled in the art. I

WVhat I claim as new and desire to .pro-

" tect by Letters Patent is:

W 1. In a pump a pump barrel closed at its lower end and having a laterah opening thereto'between its ends, a pump plunger adapted to reciprocate in said pump barrel, packing means on said plunger above said opening, said plunger having openings therein adjacent tlTe lower'end, valve sleeve slidable on said plunger, means to limit the sliding of said valve and a valve Zit'the upper "end of said plunger.

2. In apump a pump barrel closed at its 'lower endand having a laterals-opening between itsends, a pump plunger adapted to reciprocate in said pumpbarrel, packing means at theiipper end of said plunger,- an

. upwardly closing valve'above said'packing means, said plunger havlng a ccntral'passv said {passage adjacent the lower end thereof, a valve sleeve slidable on said plunger and adapted to close said openings and means to limit the movement of said valve sleeve on said plunger.

3. In a pump a pump barrel closed at its lower end, an elongated tubular plunger slidv able in said pump barrel and adapted to reciprocate therein, packing means adjacent the upper end of said plunger, a valve above said packing adapted to close the passage thereto, said plunger having a series of openings adjacent the lower end, means to close said openings on the downward stroke of said plunger, said pump barrel having anopeiring intermediate its ,ends for the purpose described.

at. In a pump, a pump barrel in two sections, the lower sectionbeng closed at its lower end, a couplinghaving a lateral openwing therein joining saidsections, an elongated tubular pump plunger in said barrel, packing thereon above said coupling, a valve at the upper end thereof, said plunger being slotted adjacent the lower end, a valve slidable on said plunger to close said slots on. the downward stroke thereof, and packing means on said valve.

5. In a pump, a pump barrel closed at its lower end and having an opening therein between its ends, a tubular plunger in said barrel, packing at the upper end of said plunger, an-upwardly opening valve above said packing, a slidgng sleeve "valve on said plunger spaced below said packing, there being openings in said plunger adapted to be a closed by said sleeve valve, and means on said sleeve valve making a close contact with said pump barreh I 6. In a pump, a pump barrel having a lateral opening therein between its ends, means to prevent the entrance of liquid at the lower end of said barrel, a plunger in said barrel having a central channel therethrbugh' and lateral openings into said channel adjacent the lower end, a sliding valve on said plunger adapted to close said openings pm the downward strokeof said p lunger,"and"suction meanson said plunger above the lower end thereof.

7. In apump, a* pump barrel having lateral openings therein between its ends, an elongated tubular-plunger lateral openings adjacent its lower end, means slidable on said plunger and adapted'to fit against 120' said pump barrel to close the said openings in said plunger on the downward stroke thereof, and suction means on said plunger ELLSWORTH GRAY.