US1568447A - Deep-well pump - Google Patents

Description

V. L. FORSYTH DEEP WELL PUMP Jan. 5 1926.

1924 2 Sheef..S -Sheet` 1 Filed Dec. 10l

Jan. 5 1926.

V. L. FORSYTH DEEP WELL PUMP 1924 2 Sheets-Sheet 2 Filed Deo. 10

Siti.

Patented Jan. 5, 1926.

UNITED STATES VALOBIS L. FOBSYTH, 0F FOB'I' WORTH, TEXAS.

DEEP-WELL PUMP.

Appunti mea member 1o, 1924. semi 110.755,061.

T o all whom it may concern:

Be it known that l, VALoius L. FoRsY'rH, citizen of the United States of America, residing at Fort Worth, in the county of Tarrant and State of Texas, have invented certain new and useful improvements in Deep-Well Pumps, of which the following is a specification.

This invention ilates to new and useful improvements in deep well pumps.

One of the objects of the invention is the provision of a pump which will deliver a full capacity discharge of liquid from the well upon each upward stroke.

Another object is to provide a liquid operated piston balanced between bodies of liquid and acquiring its upward stroke by hydraulic pressure; while its down stroke is eiected through a by-pass carrying the head pressure of the elevated and stored liquid as well as by the release of the hydraulic pressure.

Advantages of the invention reside in the elimination of sucker rods and rod troubles; also the attainment of the full power applied and the requirement of less power; and the ability to use a very long stroke pump.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following speciication and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Fig. 1 is a longitudinal vertical sectional view of a pump built in accordance with my invention.

Fig. 2 is an enlarged cross-sectional view taken on the line 2,-2 of Fig. 1,

Fig. 3 is an enlarged cross-sectional view taken on the line 3--3 of Fig. 1,

Fig. 4 is an enlarged cross-sectional view on the line 4 of Fig. 1,

Fig. 5 is a fragmentary vertical sectional view of a modified form, and

Fig. 6 is an enlarged cross-sectional view on the line 6-6 of Fig. 5.

In the drawings the numeral 1 designates the enlarged intermediate section or cylinder of a pump casing or barrel. A cap 13 screwed onto the cylinder is reduced to reoeive the reduced casing section 2. A cap 8 is screwed on the upper end of the cylinder and receivesI the reduced upper pump section 3.

The section 2 is screwed into a foot valve casing 12 having a foot valve 10 therein. A piston 4 reciprocates in the cylinder 1 and has a reduced extension 6 projecting into the section 2 and an extension 5 projecting into the section 3. The piston and extensions have a continuous axial bore a. A standing valve 11 is attached to the lower end of the extension 6 at the bore.

A stand pipe 7 has its lower end screwed into the cap 13, while its upper end is screwed into a reducing elbow 21. The pipe 7 is substantially parallel to the pump barrel. A horizontal pressure pump cylinder 23 is screwed into the elbow. This cylinder may have any practical length. A solid piston 22 o crates in the cylinder by a link 25 operate by a crank arm 24 from a suitable power.

A check valve case 17 is screwed on the upper end of the casing 3, and includes a check valve 15 preventing a downward flow of liquid. The valve 17 is fitted in a head 16 which has an elbow 16 at one side. A nipple 18 is screwed into the top of the head. A by-pass pipe 9 extends from the elbow 16 down to the elbow 8 of the cap 8. The nipple 18 is connected with a horizontal discharge pipe 2O by an elbow 19. The pipe 20 is connected with a tank (not shown) which is arranged to maintain a head pressure on the liquid above the valve 15 and in the bypass pipe 9.

To make the pump readyfor operation the parts 23, 7, 1, 9, 18 and 2() must be filled with oil or liquid and this may be done in any suitable manner.

In operation the forward stroke of the piston 22 forces the stand of oil in pipe T into the space in the casing 1 below the piston 4. This hydraulicI pressure forces the piston 4 upwardly or imparts its upward stroke. The valve 10 is opened by the suction so that the space c is filled with oil; while the valve 11 is closed, thus elevating the oil in the bore of the piston and displacing it into the space b and past the valve 15 into the pipe 20. Also as the piston moves upward the oil in the space immediately above the piston 4 in the casing 1, is displaced into the by-pass pipe 9 from which the oil is displaced into the column above the valve 15. The pipe 20 being conn a pressure exerted through the stand of :nested with e tanlr (not shown) so constant head pressure is maintained in the pipe 20 and nipple 318, .the oil from the byl ses is discharged against this head pressure.

The pistonis thus balanced except for the head pressure exerted through the b pass pipe 9. lhus upon the reverse st roe the piston 22, the pressure ofthe oil m the pipe 9 and in the cylinder is suiicient :torce the piston 4 downwardly thus imparting its down stroke. lhe oil below the piston i being displaced into the pipe 7 releases the piston for its downward stroke. Upon the down stroke the valve ll is unseated and the oil or liquid collected in the space c is received into the bore a oiE the piston and overflows into the space The piston l is elevated by the hydraulic liquid in the pipe 7 which acts as a ram. This pressure is oi' course relieved when the piston 22 is withdrawn so that the liquid may back up in the pipe 7 and the head pressure on the liquid in the by-pass pipe 9 will immediately act to Jforce the piston 4 downward. The cylinder 23 may be long enough to allow of the piston 22 a stroke or" several feet, the cylinder l being made in proportion, thus giving a copious discharge of liquid at each upward stroke ln Figs. 5 and 6 I have shown a modiication in which a hook-wall or any type of packer 33 is mounted on the casing section 2 above the foot valve l2. At the upper end of the casing 26 is a cap 27 from which the pipe 2O leads. A tubular casting 28 is fastened on the top of the head 16 instead of the nipple 18. This casting has a transverse web 29 which divides the casting, and a port 30 provides a discharge below web. An elbow 3l at the top of the casting connects with the cylinder 23. An offset 32 above l the web connects with the upper end of the stand pipe 7. The casing above the packer 33 is filled with liquid which flows back from the pipe 20. This liquid is under the head pressure from the pipe 20 and the head pressure is exerted back through the port 30. through the offset wise the operation Various changes in the size and shape of the different parts, as well as modification and alterations may be made within the scope of the appended claims What I claim, is:

l. A deep well pump comprising a casing having a plurality of members, unions joining said members together, a foot valve in the lower end of the. bottom casing member, a piston adapted to operate in the central 32 to the pipe 7, otheris the same.

member and extending therefrom into the l other two members, a bore in said piston, a checa valve 1n the lower portion of the pis- The piston 22 displaces the liquid ton bore, a check valve et upper member, a pulsator, a pipe from the said pump to the bottom of the central member, an outlet above the upper member and a by-pass pipe from the top of the lower members to the point of juncture of the upper member and the outlet pipe.

2. ln a deep well pump equipment, a cylinder having three members, uni-ons adapted to join said members together, a bored piston adapted to move in the central member, and having extensions into the other two members. a check valve in the bottom of the bored piston, a foot valve below the piston in the lower end of the bottom cylinder member, a pipe extending into the bottom of the middle cylinder member from a single cylinder force pulsator, a by-pass pipe extending from the juncture of the upper and middle cylinder members to the top or" the upper member, an outlet from the upper member, and a check valve in the top of the upper member.

3. ln a deep well pump assemblage, a cylinder comprised of three members suitably joined together in alignment, a piston having a central longitudinal bore and adapted to be movably mounted in the cylinder, a liquid inlet below the piston, means for cennecting said inlet to a single cylinder pulsator, a by-pass between the top of the cellter member of the cylinder and the outlet of the top of the cylinder, a check valve'in the cylinder below the outlet, a check valve in the bottom of the piston bore, and a foot valve below the cylinder.

4. In a deep well pump, an intermediate casing, reduced upper and lower casings connected with thefintermediate casing, a piston working in the intermediate casing and having extensions having a working tit in the reduced casings, said piston and extensions raving a continuous axial bore, a foot valve at the bottom of the lower casing, a valve in the lower end of the bore of the piston, a. valve at the top of the upper casing, a liquid discharge pipe leading from the upper casing, a fiuid pressure p1pe connected with the lower end of the intermediate casing, means for displacing the fluid from said pipe into the intermediate casing and conducting means extending from the liquid dischar e pipe to the upper portion of the interme i- Vate casmg.

5. In a deep well pump, an intermediate casing, reduced upper and lower casings connected with the lntermediate casing, a piston working in the intermediate casing and having extensions working in the reduced casings, said piston and extensions having a continuous axial bore, a foot valve at the bottom of the lower casing, a valve in the ower end of the bore of the piston, a valve at the top of the upper casing, a liquid discharge pipe leading from the upper casing,

the top of the a iuid pressure pipe connected with the lower end of the intermediate casing, means for displacing the fluid from said pipe into the intermediate casing, and a by-pass pipe lea/ding from the upper end of the intermediate Y casing to the upper casing at a point above the valve thereof.

6. Means for deep well umping comprisin an intermediate c liner and connected re uced casings, a ba anced tubular piston in said cylinder extended to communicate with said casings, a fluid ressure conductor connected with the cylin er to actuate said piston, and a byass extended from the cilinder to a oint yond the delivery from t e piston, w ereby the iiuid above and below the piston may move therewith to balance the same.

7. In a balanced pump, a vertical container, a balanced p1ston therein having a iluid conducting bore extending therethrough and a valve at the lower end of the bore, whereby the fluid below the piston is elevated therethrough, means for varying the pressure upon a body7 of fluid for actuating the piston in one direction, and a bypass pipe from a point beyond the delivery from said piston extending to said container t0 actuate. the piston in an op osite direction.

In testimony whereof I a X my signature.

vALoRIs L. FORSYTH.

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