US2028067A - Vertical double action pump - Google Patents

Description

Jan. 14, 1936; B. HEFTYE I VERTICAL DOUBLE ACTION PUMP I Filed M arch 20, 1935 5 SI'IeetS-Sheet. 1

Jan. 14, 1936. HEFTYE VERTICAL DOUBLE ACTION PUMP 5 Sheets-Sheet 3 Filed March 20, 1935 w v v w, 4 e 7 r/ a ,Z i I w y v a 7 w z 4E .W/ k y. Q2 2/; 2/ v Attomey Jan. 14, 1936. HEFTYE v 2,028,067 CAL DOUBLE A0 I Filed March 29,1935 5 sheets-sheep 4 Jan. 14, 1936.

B. HEFTYE VERTICAL DOUBLE ACTION PUMP Filed March 20, 1955 5 Sheets-Sheet 5 I nvento'r Attorney Patented i... 14, 1936 PATENT OFFICE VERTICAL DOUBLE ACTION Birger Heitye, Tampico, Mexico Application March 20, .1935, Serial No. In Mexico April 21. 1934 '3 Claims. (01.103-193) This invention relates to improvements in vertical double action pumps and more particularly to a hydraulic pump of an improved and simplified type which is entirely practical and efllcient when used-for wells of any depth and which is adapted for pumping liquids of any density such as water, and diflerent grades of crude oils, etc., which do not naturally flow to the surface owing to lack of pressure, or it may be even used for pumping with gas as motive power or compressed air as motive power, though the pump will-give better results if hydraulic pressure is used, and preferably using a liquid similar to the liquid to p be obtained from the well.

The present application involves the subject matter of a Mexican Patent No.- 35,134, granted to me and hearing date of July 9, 1934.

There is also granted to me a Mexican Patent No. 34,943 bearing effective or legal date of April 21, 1934 in which'is described a similar pump intended for the same purposes, though the pump of the present application is a modification thereof, involving certain advantageous improvements as certain operating parts of the device shown in the Mexican patent were subject to deterioration, and such parts are now. eliminated and replaced or augmented by others which operate automati-' cally, thusrendering the operation and maintenance simpler and more efiective, the positioning and arrangement of other parts having been arranged"so as to produce greater efllciency and output. As in the case of the pump covered by my Mexican Patent 34,943 referred to above, the present pump has operating characteristics distinct from all similar pumps heretofore used and known and involves for its operation a pump or a compressor exteriorly located which will force water, petroleum or gas as the case may be, de-

pending on the nature or the, liquid it is intended Fig. 1 is a vertical sectional view through the entire device.

Fig. 2 is a fragmentary vertical sectional view through that part of the casing containing the operating piston and the two plugs forming the chamber for said piston, the parts being in a position with the piston-movingupwardly.v

' Fig. 3 is .a view similar to Fig. 2 but showing the piston in its upper position and with'the valve members moved to a position to cause the piston to move downwardly.

Fig. 4 is a view similar to Fig. 3 but the section being taken at right angles to that of Fig. 3. 5

Fig. 5 is a fragmentary longitudinal sectional view of that part of the casing containing the pumping piston, the lower .plug and the plug which separates the pumping chamber fromthe chamber containing the working or operating piston, this view also showing the pumping piston as moving upwardly.

Fig. 6 is a view similar to Fig. 5 with the section being taken at right angles to that of Fig. 5.

Fig. 7 is a fragmentary vertical sectional view showing the pumping piston with the parts in position they occupy when the piston is moved downwardly. I

Fig. 8 is a fragmentary vertical sectional view through that part of the casing containing the top plug.

Fig. 9 is a section on line 99 of Fig. 8. Fig. 10 is a section on line lfl-lfl oi- Fig. 6. Fig. 11 is a section on line ll-ll of Fig. 6. Fig. 1.2 is a section on line l2-l2 of Fig. 6. Fig. 13 is a section on line I3-l3 of Fig.2. Fig. 14 is a section on line 14- of Fig.4. Fig. 15 is a section on line lS-IS of Fig. 3. Fig. 16 is a vertical sectional view through the upper end of the main discharge pipe through which the liquid flows from the pumpingchamher containing the pumping Piston.

Fig. 17 is a view of the two elongated tubular valve members which are connected together.

Fig. 18 is a perspec ive view of one of the triggers.

Fig. 19 is a view of oneot the tubular valve members of the pumping piston.

Fig. 20 is a view of the other valve member of said piston.

Fig. 21 is a fragmentary longitudinal sectional view through one of said valve members.

Fig. '22 is a view of one of the spring compres-' sion rods.

In these drawings, the letter A indicates the 46 pump casing which is formed oi a plurality of sections threadedly connected together, the lower end of the casing being reduced and the lower part of the casing extending into the fluid to be pumped. The upper end of the casing is also reduced and a discharge pipe I is connected'to the upper part of this reduced portion for leading the fluid to a tank or the like. 'A pipe line. a part of which is shown at 2, leads from a pump, compressor or other source of fluid underpresstationary plug 4 which is supported irithe casing in any suitable manner such as having arrannular part clamped between two sections of the. casing as shown in Fig. 8. The upper end of the plug is formed with a conical recess 5 terminating in a tapered threaded lower end for receiving the threaded tapered end of the part 2 of the pipe line, the conical part 5 acting as guiding means for the lower end of the part 2 to facilitate the threading of the lower end of the part 2 in the threaded part of the plug so that the bore of the pipe part 2 will register with the bore 6 of .the plug, the lower end of the bore 6 havin a threaded enlargement for receiving the upper threaded end of the part .2' of the pipe part. The plug is also provided with the vertically arranged holes I for the passage of fluid upwardly through the plug. The upper portion of the part 2 of the pipe line is offset as shown in Fig. 8 so that the lower portion of the part 2' will be located close to a portion of the internal wall of the casing and the lower end of this part 2' is threaded in a vertical passage 8 passing entirely through a plug 9.held stationary in the casing between two of the sections thereof, as shown more particularly in Fig. 2. Thus plug 9 forms a receiving chamber l8 between itself and the plug 4. A third plug H is held in a stationary manner between two of the sections of the casing and this plug with the plug 9 forms a chamber I2 for the working or dperating piston l3. Another plug I4 is stationarily held in the casing between two of the lower sections thereof and this plug forms with the plug II a chamber I5 I I9, the valve being arranged to permit fluid to discharge from the pipe. I! irito the chamber l8 but prevents fluid from passing from the chamber l8 back into the pipe. This pipe II has a close sliding fit in a vertical hole in the plug 9 and also a sliding close fit in a hole or bore passing through the plug II, the lower end of said pipe. l'l being threaded in. the upper end of the pumping piston l6 as shown in Fig. 6, a passage 28 connecting 'said lower end of the pipe-l1 with a chamber2| in the piston IS. A passage 22 in the piston l6 leads from the chamber 2| through the lower end of the piston where it is in communication with a pipe 23 connected with the lower end of the piston and having a sliding close fit in a bore in the plug l4, said pipe extending into the reduced lower end of the casing and into the liquid in thewell as shown in Fig. 1. A downwardly closing check valve 24 controls the passage 22.

' A. chamber 25 intersects the passage 22 below ders.

the valve 24 and the piston l3 has a pair of vertically arranged bores 26 passing therethrough, each end of each of which has a sleeve 21'therein, the inner ends of the sleeves :forming' shoul- V A tubular valve closed at its lower end is located in one of the bores 26, this valve being shown at 28 and a tubular valve 29 is'located in the other bore 26 and has its upper end closed, the valves being limited in their vertical movement by the sleeves 21. These valves are held against rotary movement by the screws 38 threaded in holes in the piston l6 and entering grooves 38' in the valves as shown in Fig. 10, and the upper end of the chamber 2| is closed by a. (plug 3| as shown in Figs. 5 and 10. Each of the valves 28 and 29 has upper and lower ports 32 therein one of which will communicate with the chambr2| when the valve is in one position and the other one of which will communicate with the chamber 25 when the valve is in its other position, and as will be seen from Figs. 5 and '7, when a port of one valve is in communication with a chamber, the corresponding port of the other valve will be out of communication wit said chamber but will have its other port in communication with the opposite chamber.

A pair of elongated tubular valve members 33 and 34 are connected together adjacent their ends by the cross bars 35 shown more particularly in Fig. 17 and these tubular valve members 33 and 34 pass slidingly into close fit through vertical bores in the piston l3 and the upper end of the tubular valve 33 has a sliding close fit in the bore 3 of the plug 9 and the upper end of the valve 34 has a sliding close fit in the vertical bore 36 in the plug 9 and located opposite the bore 8. The upper end of the bore 36 discharges into the chamber ID. A vertical chamber 31 is formed in the lower part of the plug 9 and opens out through the bottom of the plug into thl' chamber l2 and vertically offset ports 38 connect the chamber 31 with intermediate parts of the bores 8 and 36. Ports 39 in the upper ends of the valves 33 and 34 are adapted to register with these ports 38 when said valves 33 and 34 are in difierent positions. For instance, the port 39 of the valve 33 will register with the upper port 38 when the valves 33 and 34 are in their raised positions but the port 39 of the valve 34 will be out of register with the lower port 38 as shown in Fig. 3. Then when the valves 33 and-34 are in lowered position, theport 39 of valve 33 will be out of register with its port 38 while the port 39 of the valve 34 will be in register with its port 38 as shown in Fig. 2 and as the ports 38 are in communication with the chamber 31 which in turn is in communication with the upper end of the chamber |2 of piston 3, these valves 33 and 34 will control the flow of fluid into andfrom the upper end of the chamber 2.

The lower ends of the valves 33 and 34 extend into vertical bores in the plug I, the lower ends of these bores being closed and a chamber 49 is formed in the plug II and opens out throughlthe upper end of the plug into the chamber l2 and this chamber 48 is provided with the vertically ofiset ports 4| controlled by the ports 42 in the lower ends of the valves 33 and 34, the ports just described being so arranged that when an upper port of one of the valves 33 and 34 is in communication with a port 38, the port 42 of said valve is out of communication with the port 4| and when a port 42 is in communication with the port 4|, a port 39 is out of communication with a port 38 as shown in Figs. 2 and 3.

The piston I3 is formed with a centrally arranged vertical bore 43 in which is located a.

spring 44 and plugs 45 close the ends of the bore 43 and have rounded heads projecting from the ends of the piston l3 A rod 46 passes slidingly through each plug 45 and has a head 41 at its inner end contacting an end of the spring and bar 35 for holding the cross bar and'therefore '3 into the chamber III. will be compressed as the piston I3 nears the lower end of its: stroke, after whichthe lower.

is reciprocated by the fluid flowing each rod is so located that it will engage the cross bars 33, as the piston I3 nears the ends of its strokes. A spring-actuated latch 43 is piv oted to each of the plugs 3 and II, a latch being shown in detail in Fig. 18 and each latch is provided with a shoulder H for engaging a cross the valves 33 and 34 against movement towards that plug which carries the latch. .Thus, as the piston I3 approaches an end of its stroke, a rod '46 will strike a cross .bar and as the bar 35 is held against movement by the rod 43 by the latch 43, the rod 46 is pushed inwardly so that itshead will compress the spring and this action will continue until the piston reaches a position where ahead of the plug 45 will engage the latch 43 and thus move it to releasing position-and then the energy stored in the contracted spring 44 willcause the rod 46 to press the crossbar 35' and the valve members 33 and 34 towards the plug, towards which the piston I3 is moving, and thus the valves 33 an will be shifted to another position.

For instance, with theparts'sho'wn in Fig. 2, the propulsion fluid from the pipe line 2 will flow through the section 2f into the bore 3 through the valve 33 and pass from the valve through the port 42 at its lower end into the port M and throughfthe chamber 43 into the lower part of the chamber I2 so that the piston I3 is forced upwardly and the-fluid or liquid in the chamber l2 above the piston I3 will pass therefrom through the chamber 31, right hand port 33 into the upper port 33 of valve 34 and through the bore 38 of plug linto the chamber I3. Of course, the fluid entering the bore 3 cannot enter the upper chamber 31 as the left hand port 38 is closed as will be seen in Fig. 2. As the piston I3 nears the upper end of its stroke, the upper rod 44 will strike the upper cross piece 35 which is held against upward movement by the upper latch 43. Thus, the rod 46 will compressthe spring 44 as the piston continues its upward movement and then when the head of the upper plug 45 strikes the upper latch 43, the latch will be released from the upper cross bar 35 and; the energy stored in the spring will force the upper cross bar 35 and the valves 33 and 34 with the lower cross bar "upwardly and thus change the positions of the valves 33 and 34 from that shown in Fig. 2 to that shown in Fig. 3. Then the fluid in section 2' of the pipe line will enter the bore 3 and the upper part of valve 33 and as it cannot escape from the lower end of valve 33, the fluid will pass through the port 33 of valve 33, the upper port-33 in the chamber 31 and then flow from chamber 31 into the upper end of the chamber I2 so thatv the .piston I3 will bemoved downwardly. The fluid in the lowerpart of the chamber l2 will be forcedby the downwardly moving piston I3 into the chamber of plug II and through the right hand port 4| into the port 42 at the lower end of the valve 34 andthen flows upwardly through the valve 34 and escapes from the bore 33 of plug of course, the spring latch 43 will ber'el'eased by the lower plug and then the valves 33 and 34 will be shifted to the position shown in Fig. 2. Thus, the piston I3 through the pipe line 2 and its section 2'.

As the piston I3 is reciprocated, it will impart a reciprocatorymovement to the discharge pipe nected with the pumping piston I4, then piston It will be reciprocated as wellas the pipe 23.

As the piston II moves upwardly it will compress the fluid above it in chamber I5 and this will move both of-the valves 23 and 23 downwardly to the position they occupy in Fig. 5 so that the fluid above the piston I3 will enter the bore 26 and the valve 28 andpass through the upper port 32 of this valve "into the chamber 2I from which it will flow through the passage 20 intothe 'pipe I! and through this pipe I1, past the valve I9 into the chamber I0. Of course, this fluid will mix with the fluid passing from the bore 36 andjplug 9 and which was used for reciprocating, the piston I3 and this combined fluid will pass from the chamber III through the passages I in the plug 4 and up through the upper end of the casing A into the discharge pipe I. Thus, it is preferable to use the same fluid for operating the piston I3 as that being pumped from the well.

As the piston I6 is moving upwardly, the lower port 32 of the valve 29 is in communication with the chamber 25 and the upwardly moving piston I6 causes a suction in that part of the-chamber I 5 below it so that a vacuum is created in the chamber 25 which produces a suction in the lower part of the passage 22 and in the pipe 23 so that liquid is drawn from the bottom of the well through the pipe 23 and passage 22 into the chamber 25 from which it flows into the valve. 29 and from this valve it passes into the lower part of the chamber I5. Of course; when the 7 piston I6 is moved downwardly, a suction iscreated in the upper part of the chamber I5 and a pressure in the lower part I5 and this downward movement reverses the positions of the valves 28-and23, as shown in Fig. 7 so that the liquid or fluid in the lower part of the chamber I5 is forced through the valve 29, the upper port 32 thereof into the chamber: 2| from which it flows into pipe I! as before described, and the suction created in the upper part of the chamber I5 by the downward movement of piston IE will be communicated to the chamber 25s through the lower port 32 of the piston. 28 so that liquid from the well will be drawn into the upper portion ofthe chamber I5.

If gas or the like should occur in the well to a create a pressure in the pipe 23. this pressure would force the valve 24 oil its seat and thus the fluid under pressure would pass directly from the pipe 23 into the chamber 2| and from said chamberinto the pipe II.

Thus, it will be seen that the piston I3 is operated by the fluidintroduced' into the chamber I2 from the pipe line 2 and the reciprocation of this piston I3 is communicated to the pumping piston I6 so that the liquid or fluid is drawn from the well and discharged into the chamber I0 from which it flows through the upper part of the casing to the discharge pipe I which may lead to a tank or the like, the propulsion fluid for the piston I3 also discharging into the chamber III and flowing with the liquid from the well into the pipe I. The main discharge pipe II acts as connecting means between the two pistons and the valve 24 permits discharge of fluid under pressure of the well directly into the discharge pipe without interfering with the pumping action of the piston I3 or with said piston interfering with the discharge of the fluid under pressure. However, when this occurs, the pump can be shut down and the well allowed to fiow freely without necessitating any change or withdrawal of the parts of the invention, thus saving time and expense. This arrangement which includes the valve 24 will also prevent damage to the parts by a sudden rush of oil and gas as any pressure compensating the weight of the exhaust, will lift the valve 24. As soon as the flow of liquid or fluid under pressure ceases, then the pump can be started up without any delay or changing any parts. v

The specific means of holding the various plugs in place by the threaded ends of the casing sections will provide a smooth exterior for the casing which will permit greater internal diameter and avoid any shoulder trouble when inserting the easing into a well or drawing the casing from the well.

Attention is called to the fact that the valves of the pumping piston 16 are operated wholly by the pressure of fluid in the chamber i5 so that the operation of the valves is entirely automatic.

The device will provide a constant circulation or discharge of the fluid from the well so that any foreign matter such as sand in the fluid pumped from the well will readily pass with the fluid to the discharge and thus not collect in any of the parts to cause trouble. The elongated tubular valves not'only act as valves but they also serve as conduits for the fluid and the valves 33 and .34 also act in conjunction with the pipe I! as guides for'thepiston l3.

This invention also completely eliminates the pumping rod, .walking beams and pull rods and the like and the means for operating the same and the invention can be used in crooked holes as well as straight holes. The invention can also be used in wells containing paraffin but in this case, the fluid used for operating the piston l3 should be hot, such as hot oil, so the paraffln will be meltedand pass with the oil to the tanks. This invention can also be used on wells deeper than wells where the rod pumping systemcan be used as the column of fluid used for operating the piston l3 will weigh the same as r the exhaust column, so that there is no back pressure to overcome and no dead weight to deal with as in the case of the rod system which can only stand a certain amount of weight on the rod string.- Another advantage of the invention is that no matter how slow it operates,

it will never stop at dead center because the tubular distribution valves operate simultaneously and change positions in a snap fashion by means of the triggers and the spring means. Also by using the proper sizes of headed plugs 45, the parts can be adjusted to operate with absolute precision.

It is thought from the foregoing description that the advantages and novel features of the inventionwillbe readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appendedclaims.

1. In a; pumping apparatus of the class described, a pump chamber, a discharge pipe extending into the chamber, a piston in the cham-.

v chamber and with the discharge pipe and said piston having a pair of vertically arranged bores therein, a sliding elongated tubular valve in each bore, one having its lower end closed and the other having its upper end closed, a conduit connecting the lower chamber with the fluid to be pumped, each of the upper and lower chambers being in communication with the bores and each valve having upper and lower ports therein, the upper one of which communicates with the upper chamber while the lower one is out of communication with the lower chamber and the upper port of the other valve being out of communication with the upper chamber when the upper port of the other valve is incommunication with the chamber and vice versa, said valves being moved by the fluid being pumped.

2. In a pumping apparatus of the class described, a pump chamber, a discharge pipe extending into the chamber, a piston in the chamber, means for reciprocating the piston, said piston having upper and lower chambers'therein, a discharge conduit connected with the upper chamber and with the discharge pipe and said piston having a pair of vertically arranged bores therein, a sliding elongated tubular valve in each bore, one having its lower end closed and the other having its upper end closed, a conduit connecting the lower chamber with the fluid to be pumped, each of the upper and lower chambers being in communication with the bores and each valve having upper and lower ports therein, the upper'one of which communicates with the upper chamber while the lower one is out of communication with the lower chamber and the upper port of, the other valve being out of communication with the upper chamber when the upper port of the other valve is in communication with thechamber and vice versa, said valves being moved by the fluid being pumped, a passage connecting the upper and lower chambers together and a downwardly closing check valve in said passage.

3. A pumping apparatus of the class described, a pump chamber,a piston therein, means for reciprocating the piston, a discharge pipe connected with the piston, a suction pipe connected with the piston and depending therefrom into the fluid to be pumped, said piston having upper and lower chambers therein, the upper chamber being in communication with the discharge pipe and the lower chamber being in communication with the suction pipe, said piston having vertically arranged bores therein in communication with the chambers of the piston, an elongated tubular valve in each bore, one valve having its lower end closed and its upper end open and the other valve having its upper end closed and its lower end open, each valve having a pair of ports therein, one for communicating with the upper chamber when the other is out of communication with the lower chamber and vice versa, said valves being operated by the fluid being pumped.

BIRGER HEFIYE.

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