US1107426A - Valve for deep-well pumps. - Google Patents

Description

R. E. L. HOLMES.

VALVE FOR DEEP WELL PUMPS.

APPLICATION FILED JUNE-19, 1913. 1 1 07,426 Patented Aug. 1-8, 914.

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WITNESSES v ATTORN EY THE AORRIS FEllzR (.11., PHOTO LITHO.. WASHINGIUN, D. c

R. E. L. HOLMES.

VALVE FOR DEEP WELL PUMPS.

APPLIOATIOII FILED mm: 19, 1913.

1, 1 @1426, Patented Aug". 18, 1914.

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WITNESSES THE NORRIS PETERS 60.. PH010-LITHa, WASHINGIUN. n. C.

UNITED STATES PATENT OFFICE.

ROBERT E. L. HOLMES, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR 'IO KEYSTONE DRILLER COMPANY, OF BEAVER FALLS, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Application filed June 19, 1913.

To all whom it may concern:

Be it known that 1, ROBERT E. L. I-IoLMns, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented a new and useful Valve for Deep-VVell Pumps, of which the following is a specification.

This invention has reference to improve ments in valves for deep well pumps, and its object is to provide a valve wherein a relatively small lift thereof will provide a very large passageway for the liquid,thus permitting the pump piston to be run at a high speed without choking.

lVhile in the following description the structure will be considered as used for deep well pumping, it will be understood that it is adapted to any ordinary pump wherein a check valve is used.

In accordance with. the present invention the pump piston is provided with a conical valve seat, and to this seat there is adapted a conical valve, both seat and valve being ported, and the valve and seat may be of a type wherein two valves are employed in a single cylinder, and while a single valve structure embodying the same principles may be used, a double valve structure is to be preferred.

The invention also contemplates a structure whereby sand or other substance is caught and afterward discharged thereby preventing such material from working down to or in behind the lower packing rings, it being customary to provide the piston with several superposed packing rings.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this'specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no materlal departure from the salient features of the invention.

In the drawings: Figure 1 is a longitudinal diametric cross section of a portion of a pump cylinder with a double ported piston and valve therefor, the piston being shown half in elevation and half in radial section. Fig. 2 is a view similar to Fig. l but showing Specification of Letters Patent.

Patented Aug. 18, 1914.

Serial No. 774,676.

the valve open. Fig. 3 is a plan view of the piston and valve. Fig. 4: is a view similar to Fig. l but illustrating the single port type of the invention. Fig. 5 is a view similar to Fig. 2 but showing the single port type. Fig. 6 is a view similar to Fig. 8 and also illustrating the single port type.

Referring to the drawings, and more particularly to Figs. 1, 2 and 3, there is shown a portion of a deep well cylinder 1 which is assumed to be suspended from a well tubing slightly larger than the cylinder, so that parts within the cylinder may be withdrawn for repairs without disturbing the tube.

Within the cylinder 1 is a pump piston 2 having a body portion of general cylindrical shape, which body portion is exteriorly screw threaded at 3, this being the lower end of the body portion of the ordinary installed position of the piston. Near the upper end of the cylindrical portion there is an outstanding radial flange 3 on the under face of which there is formed ashoulder 4 against which is abutted a cup packing ring 5 held to the shoulder by a ring-shaped follower 6. Other cup packings 5 and followers 6 are lodged in order one against the other along the piston 2 to the threaded end 3 where locking rings 7 are applied to hold the series of packing rings and followers in place. The flange 3 is located a short distance below the upper end of the cylindrical portion of the pump piston and the upper edge or lip of the uppermost packing ring 5 rises above the upper face of the flange 3, thereby forming a pocket 8 at the upper end of the series of packing rings and a short distance below the upper edge of the cylindrical portion of the piston.

Rising from the upper portion of the body of the piston 2 is a circular series of converging ribs 9 ultimately merging at their upper ends in a nipple 10 interiorly threaded for the reception of a pump rod, which latter, however, is not shown. Joining the 'ribs about midway between the lower end of the nipple and the body portion of the pump piston is an annular band 11 integral with the ribs. This band is in the main cylindrical, while at the lower end it is outturned so as to be there substantially radial to the longitudinal axis of the pump piston. The band is therefore in effect convex on the inner face, while the two edges of the band conform to the convergence of the ribs 9. The upper edge 12 of the cylindrical portion of the pump piston is beveled in conformity with the general conical contour of the outer edges of the ribs 9 and the parts carried thereby, all of these parts constituting a conical body portion of a valve structure. Where the ribs9merge into the nipple 10 the same conical conformation is maintained, so that the outer margins of the upper'edge 12 of the body portion of the piston, the outer edges of the band 11 and the lower edge of the nipple 10 all form a conical valve seat 13 having spaced ports 1 1- above and below the band 11. The nipple 10 is cylindrical on its exterior for a portion of its length above the unction therewith of the ribs 9 and adapted to this cylindrical portion of the nipple is a similarly shaped {collar 15 from which radiate ribs 16 having elongated outer edges 17 substantially parallel with the longitudinal axis of the collar and pump piston and snugly, yet freely fitting the interior of the pump cylinder 1.

The inner edges of the ribs 16 carry spaced annular bands 18 and 19, respectively, having substantially concave faces presented toward the ribs 9 and the spacing of'these ribs 18 and 19 conforms with the spacing of the ports 1%. Moreover, the inner edges of the ribs are conical, so as to match the conical corresponding edges of the rib 11, the lower end of the nipple 10 and the upper edge 12 of the body of the piston 2. The bands 18 and 19 have their lower portions substantially cylindrical and their upper portions substantially radial and inturned. The bands 18 and 19 define between them an annular port 20, and there ,is also defined another annular port 20 between the upper band 18 and the lower edge of the collar 15, all the parts of the valve structure made up of the collar 15, ribs 16 and bands 18 and 19 facing the ribs 9 being conicalto form a conical engaging surface 21 for the valveseats on the lower edge of the nipple 10, band 11 and upper end 12 of the body of the pump piston. The arrange ment is such that the lower edge .23 of the valve engages when in a state of rest the upper edge 12 of the body of the pump piston, the upper edge of the band 19 engages the lower edge of the band 11, the lower edge of the, band 18 engages the up- .per edge of the band 11, and the upper edge of the band 18 engages the lower edge of the nipple 10. The lower edge 23 of the valve is so related to the upper edge 12 of the body of the pump piston as to be immediately above and nearer the center of the pump piston than the pocket 8, so that any sand or other material carried by the fluid being pumped through the ports tends to drop down into the pocket to there find lodgment instead of possibly reaching the lower packing rings. When the piston is moved downwardly with the valve open fluid flows through the ports in a swirl which will tend to clean out the pocket 8, so that there can be no excessive accumulation of sand or the like therein. This cleaning action is due to the close approach of the lower edge 28 of the valve to said pocket. While the ports through the valve seat and through the valve have been described as annular, their continuity is in fact broken by the ribs, but this does not interfere with the description of the ports as annular, since they are effectively annular.

The outer face of the band 11 is concave, as indicated at 2 1 and the outer face of the lower end of the nipple 10 is also concave as indicated at 25, and these two concavities coact with the concavities f the bands 18 and 19 to provide much larger and freer passage for fluid when the valve is in the open position than would be the case were t e parts all truly conical. The actual points of contact between the valve and its seat are truly conical, though quite narrow,

and the intermediate parts of the valve and between the ports are not only solid but more or less curvilinear, thereby providing a greatly enlarged free passage for the fluid when the valve is open, which is peculiar to the structure of the present invention.

The structure of Figs. 4, and 6 is similar in substantially all respects to that of Figs. 1, 2 and 8, except that the valve is of less linear extent and the valve seat is alsoof correspondingly contracted extent. The result is that there is but a single annular port 14. defined between the main portion 3 of the pump cylinder and the nipple 10, the two parts being joined by ribs 9. Moreover, there is but a single band 18 on the valve and but a single concave portion. Otherwise the structure is substantially that of Figs. 1, 2 and 3 and the same reference numerals are employed through out F igs. 4;, 5 and 6 as are used in Figs. 1, 2 and 3 for like parts, even though they may in some respects differ slightly in configuration. The packing rings 5 and 5' applied to the trunk of the piston may be made of leather or fiber or other suitable material and may be all alike, although the top portion or lip of the uppermost packingring 5 defines a sand pocket between it and the upper end 12 of the body of the pump pis.

tion. The grooves 22 between the nipple and collar allow a wash of water orother liquid to pass upwardly to clean out any sand which might otherwise find lodgment between the collar and nipple. By placing the upper packing ring close to the lip of the valve permits the use of four packing rings in the same. length of trunk which has heretofore accommodated but three packing rings, while the oppositely curved bands of the valve and valve seat defining the ports port above the integral portion in operative relation to the exterior concavity above the ribs, the integral portion of the valve being interiorly concave.

5. A pump piston comprising a body portion with a conical valve seat, a structure rising therefrom and terminating at the upper end in a nipple for the reception of a pump rod, the valve seat structure being provided midway of its height with an integral outwardly concave annular band defining ports both above and below it, and the nipple above the upper port being formed with an exterior annular concavity, and a conical valve adapted to the conical valve seat, said valve having spaced annular interiorly concave bands defining an annular port between them and provided with an annular port above the upper band matching the annular concavity on the exterior portion of the nipple.

6. The combination with a pump cylinder, of a pump piston therein provided. at the upper end with an annular series of converging ribs, and a nipple into which the upper ends of he ribs merge, said nipple being formed with an annular concavity above the ribs and also adapted to receive a pump rod, and the upper end of the body of thepump piston, together with the lower end of the nipple defining a conical valve seat with an annularly ported portion between them, and a conical valve having an annular inte ral port-closing portion adapted to the annular ported portion of the valve seat with said integral portion interiorly concave and provided with an annular port thereabove matching the annular concavity of the nipple, and a series of ribs carrying the integral port closing portion of the valve, said ribs being axially extended and snugly, yet freely, fitting the interior of the pump casing.

4. T he combination with a pump cylinder, of a pump piston therein provided at the upper end with an annular series of converging ribs and a nipple into which the upper ends of the ribs merge, said nipple being formed with an annular concavity above the ribs and also adapted to receive a pump rod, and the upper end of the body of the pump piston, together with the lower end of the nipple, defining a conical valve seat with an annularly ported portion between them, and a conical valve having an annular integral port-closing portion adapted to the annular ported portion of the valve seat with said integral portion interiorly concave and provided with an annular port thereabove matching the annular concavity of the nipple, and a series of ribs carrying the integral port-closing portion of the valve,said ribs being axially extended and snugly, yet freely, fitting the interior of the pump cylinder, and said ribs permit the use of a true conical valve and valve seat and at the same time greatly increases the available area of the ports for the passage of water or other liquid. When the valve is opened, water or other liquid will find its way through the ports 1 or port 14 as the case may be, about the lower edge of the band or web 18 or 19 in the form shown in Figs. 1, 2 and 3 or 18 in the form shown in Figs. 4:, 5 and 6, and also between the band or hands carried by the valve and the concave portions of the piston interior to the valve, so that a large opening for the passage of fluid is provided with a minimum movement of the valve, and consequently the piston may be reciprocated at much higher speed than has heretofore been possible.

hat is claimed is 1. A pump piston provided with a conical valve seat having spaced annular ports separated by an annular band concave on the outer face, said seat having the outer face conzave above the uppermost port, and a conical valve provided with spaced annular bands corresponding to and adapted to close the annular ports of the valve seat, said valve being provided with an annular port between the bands and another annular portabove the upper band.

2. A pump piston provided with a nipple for the reception of a pump rod, and an annular port between the nipple and the body of the piston with the portion of the nipple adjacent to the port exteriorly concaved, and a conical valve having an interiorly concave band adapted to close the port through the valve seat and provided with a port above the band.

3. A pump piston having a substantially cylindrical body portion, converging ribs rising therefrom and merging at the upper end into a nipple for the reception of the pump rod, the nipple and the other end of the pump piston, together with the ribs, constituting a conical annularly ported valve seat and having an annular concavity above and adjacent to the upper ends of the ribs, and a conical valve having an integral portion for closing the ported part of the valve seat and in turn provided with an annular port above the integral portion in operative relation. to the exterior concavity above the ribs.

4:. A pump piston having a substantially cylindrical body portion, converging ribs rising therefrom and merging at the upper end into a nipple for the reception of the pump rod, the nipple and the other end of the pump piston, together with the ribs, constituting a conical annularly ported valve seat and having an annular concavity above and adjacent to the upper ends of the ribs, and a conical valve having an integral portion for closing the ported part of the valve seat and in turn provided with an annular being connected at their apart lengthwise of upper ends by a collar adapted to the nipple to move therealong and having the inner wall provided with a circular series of longitudinal channels.

8. A pump piston provided with a conical valve seat having an intermediate integral band defining annular ports spaced the valve seat, said band having one portion cylindrical and another portion extending radially outward and thereby forming an exterior concavity about the band, the valve seat also being provided with an exterior annular concavity abovelthe upper port, and a conical valve adapted to the conical valve seat. and provided with spaced annular bands adapted to cover the ports of the valve seat, each band having a. portion cylindrical and another portion extendingradially inward to thereby form the inner walls of the band annularly concave, the valve having an annular port between and spacing the bands and also provided with another annular port above the upper one,v of the bands. I

9. A puinp piston provided with a conical valve seat and conical valve adapted thereto and also provided with packing rings with the uppermost packing ring having an n standing lip in spaced relation to a corresponding portion of the pump plunger inv Copies of this patent may be obtained for five cents each, by addressing the i Washington, D. G.

solid portion adjacent to its lower edge concaved toward the interlor ot the piston to direct fluid toward the pocket when the valve is opened.

11. A pump piston provided with a conical valve seat and an exterior conical valve adapted thereto, the piston having an ex terior flange adj ac-ent to and below the lower edge of the valve seat, and a series of packing rings with the uppermost packing ring provided with a free upstanding lip closely adjacent to and exteriorly spaced from the lower edge of the valve seat and rising above the upper face of the exterior flange.

In testimony, that I claim the foregoing as my own, I have hereto aifixed my signature in the presence of two witnesses.

. ROBERT E. L. HOLMES.

\Vitnesses F. W. Ransom, A. R. lllrronnnn.

Commissioner of Patents,

spaced therefrom to define an annu-

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