US2530246A - Sleeve type slush pump liner - Google Patents

Description

1950 R. KIRKPATRICK EIAL 2,530,246

SLEEVE TYPE SLUSH PUMP LINER Filed June 2, 1947 a ///////////A' A RUEL L. KIRKPATRKK HENRY B. Youua IN VEN TOR.

ATTORNEYS Patented Nov. 14, 1950 UNITED STATES PATENT OFFICE SLEEVE TYPE SLUSHPUMP LINER Ruel Kirkpatrick and Henry B. Young, Houston,

Tex, assignors to. Mission Manufacturing Company, Houston,"'1ex.

Application June 2, 1947, Serial No. 751,924

:for a pump.

-An object of the invention isto providea pump .l-inerassembly of simple construction which. is :of. such formation thatit. is adapted to be firmly positioned in'a cylinder of a pump while in use.

Another object of the invention is toprovide a sleeve type pump liner assembly of a simple iconstruction which-is of-such formation that it is (adapted to be firmly positioned in a cylinderoi-a pump while in use, and which assembly includes aliner therein which may .be easily. and quickly removed and replaced.

@Anotherobiectof the invention is toprovide a pump .li-ner assembly comprising a tubular sleeve and replaceable liner removablysecured togetheig which maybe firmly positioned inplace in acylinder.

Still another object oftheinvention-is to, provide. a pump liner. assembly. .adaptabletc .operate with pistons of varioussize horse which assembly includes a removable liner firmly secured to a sleeve, :which has. seal meansbetween. the. liner andsleeve toprevent leakageofpumpedfluid therebetween.

A further object of the invention isto provide a. sleeve .typelinerassembly. comprising. a tubular sleeve to be positioned in a. cylinder and areplaceable liner fitting inithegsleeve,v the linerbeing connected to the sleeve at. onlypne endso'that longitudinal displacement of the liner lduringpperation will not betrarismitted to thesleeve.

Inthedrilling of wells'bythe rotarymethod, it is customary topump a fluid down. a string of pipe and into the well bore. 1T0.thisend,..a,pump commonly called a mud pump is-used. on theilocation tocirculate the gritty fluid. "Theseffluids are. usually highly abrasive and tend. to wear various parts of the pump rapidly. Forthis reason it is necessaryto provide removable liners for the pumpswhich-can be removed and replaced as desired, thereby obviating the necessity of replacing each pump as'it becomes worn out. Of course, time is lost, when the pump is broken down, in removing and replacing the linertherein. This invention is directed primarily to a liner adapted to be secured firmly in position during the operation of the pump, but which may be removed without difficulty upon occasion.

Other and further objects and advantages of the invention will become more readilyrapparent from a consideration of the accompanying drawings in connection with the following description, wherein-- zFig. 1 isa vertical sectional view of aiform of the invention;

2 Fig. 2 is a vertical sectional view showing a structural modification thereof; and

'Figs.--3-and 4 are modifications of the invention having liners thereinwhich are adapted for use with pistons of various size bores.

Theliner assembly is shown generallyat 2 in Fig. 1. The assembly comprises an elongated tubular. sleeve :3 arrangedto pass through and fit snugly in apump' cylinder. vThe forward or head 'end of the sleeves is connected by suitable means such as welds at A, or sweat joints, to an upstanding or outwardly extending shoulder or flange 5. This flange has therein the counterbore B, so that the base or bottom thereof constitutes a seating surface! for the liner 9 1.

An annular notch or groove 8 is'provided in the counterbore =4 to receive a seal ring .9. At the opposite end of the tubular sleeve 3, an annular inwardly extending flange H) is provided thereon to abut the liner H and position such liner with respect to the tubular sleeve. The liner H is connected at l2 to an outwardly extending shoulder or flange H which is arranged to seat in the counterbore't on-the seating face 1 provided therefor. The surface it of the flange 5 is arranged so as to be in sliding engagement with the surface E5 of the flangelS. The sealing means?) prevents the entry of fluid between the sleeve 3 and the liner l I.

Suitable means are provided. such as the allen screws 56, which pass through the holes ll in the flange l3 and, thence into the flange 5 at [8, to releasably secure the liner and sleeve together. It isto be noted that the depth of the counter- --bore 5 is such that thelength of the end face 52 of the flange l3, when seated on the seating face 1, will form a flush joint with the flange 5 as shown at 23.

'Adiacentthe inward flange it on the sleeve 3, the liner H is providedawith annulargrooves 2| and 22 on the periphery thereof, arranged to receive sealing means 23 and 24 which further serveto inhibit the entry of fluid between the sleeve and the liner.

:In 'Fig. 2, the flange lt'is formed integrally with the liner l l, and the flange Elie formed integrally with sleeve 3. This construction obviates the necessity ofconnecting the'flange 5- to the sleeve 3, and the flange ls-to the linerH, as by the welds or sweat joints. The liner H is shown as being tapered at 24.

1 Figs. 3 and, l .-show a liner assembly construction'yvhere-in the liner is of various sizes arranged torcfit 'llfillOllSylJlStOl'l sizes. To this endtthere ,is provided adjacent the flange Hl-on the end ofthe sleeve, a packing assembly 26 comprising an annular ring 2'! which is provided with notches thereon to receive the seal'rings 28 and 29.

The width 33 of this seal ring 21 will be such so as to fill the gap between the flange ID and the liner I I. In order to position the liner I I at the head end of the sleeve, an adapter ring 32 is provided in the form of a flange 33 arranged to seat in the counterbore 6 and on the face 1 thereof. The thickness of this adapter ring 32 is adapted to be in sliding engagement with the inner periphery of the flange at 35 thereby firmly positioning the liner in the sleeve.

Allen screws 3! are provided to pass through the conforming passage 38 in the flange 33 and into the flange 5 at 39, thereby securing the liner II to the sleeve 3. A notch or groove 40 in the flange '5 adjacent the outer periphery of the flange 33 is provided with seal means 4! to prevent fluid leakage between the flanges 5 and 33 and into the space' lz between the sleeve 3 and liner I I. The adapter ring 32 may be secured by any suitable means such as a weld or a sweat joint as at 35 to secure the ring to the liner II A taper .5 is provided which extends downwardly and outwardly on the end of the liner II. This taper is similar to the taper 24' shown in Fig, 1.

Attention is directed to the construction as shown whereby the depth of the counterbore 6 is equal to the depth of the shoulder 50 on the flange 33 so that when the liner II and sleeve 3 are secured together by means of the allen screws, the whole presents a flush surface as shown at 5|.

In Fig. 4, the flange 5 and the flange 33 are shown as being formed as a part of the sleeve 3 and liner II respectively. This obviates the necessity of securing such flanges in position on the sleeve and liner. Various sizes of adapter rings 32, in the form of the flanges 33, may be provided so that any size piston bore may be accommodated by the construction.

It is to be noted that the sleeve 3 and liner H are secured together at only one end 60 of the assembly. Thus as the piston moves back and forth in the liner during operation of the pump, there is a tendency to longitudinally displace the liner relative to the sleeve. The constant back and forth movement has heretofore been transmitted from the liner directly to the surrounding cylinder which tends to increase wear on the pump parts. The seal means on the opposite end of the liner assembly is so arranged that it can move on the annular inwardly extending flange so that a seal is maintained between the liner and sleeve at all times even though the two are capable of being displaced relatively longitudinally. The space 42 between the sleeve 3 and liner I I takes up any radial displacement in the liner that might occur.

In customary pump construction a header plate, not shown, is usually bolted in position over the cylinder during operation. This plate is provided with bolts extending therethrough and arranged to abut against the liner assembly to retain it in position.

To position the present construction of sleeve type liner assembly in the cylinder, it is only necessary that the header plate be removed and the assembly 2 positioned in the cylinder bore. The header plate is then replaced and bolted in position. The bolts extending through the header plate are then adjusted to contact the flush surface 20 around the liner assembly whereby the whole is firmly secured in place.

The invention claimed is:

1. A compound pump cylinder liner comprising, a tubular sleeve adapted to fit in the cylinder, an outwardly extending counterbored flange on one end thereof, a piston-receiving tubular liner adapted to pass through said sleeve, an outwardly extending flange on an end of said liner adapted to fit within the counterbore of said sleeve flange to position said liner therein, seal means disposed between said flanges, means extending through said liner flange and into said sleeve flange for securing the two together and seal means disposed between said sleeve and said liner adjacent the other end thereof to maintain a seal between said sleeve and said liner while permitting relative axial motion therebetween.

2. A pump cylinder liner assembly comprising, a tubular sleeve adapted to fit in the cylinder, an outwardly extending counterbored flange on one end thereof to seat the sleeve in the cylinder, a tubular piston receiving liner adapted to pass through said sleeve, means on an end of said liner arranged to engage and seat within the counterbore of said flange, seal means disposed between said engaging means and said flange, and seal means disposed between said sleeve and said liner adjacent the other end thereof to maintain a seal between said sleeve and said liner while permitting relative axial motion therebetween.

3. A pump cylinder liner assembly comprising, a tubular sleeve adapted to fit in the cylinder, an outwardly extending flange on one end thereof to seat the sleeve in the cylinder, there being a counterbore in said flange, a tubular piston receiving liner adapted to pass through said sleeve, means on an end of said liner arranged to seat within the counterbore of said flange to position said liner in said sleeve, means for securing said engaging means in the counterbore of said flange, and seal means disposed between said sleeve and said liner adjacent the other end thereof to maintain a seal between said sleeve and said liner while permitting relative axial motion therebetween.

4. A pump liner assembly comprising, a tubular sleeve having a counterbore in an end thereof, a tubular liner having a flange on an end thereof of a width to fit snugly within said counterbore so that the end surfaces of said liner and sleeve are in alignment, a seal between said flange and said counterbore, means in said liner and passing into said sleeve to lock said sleeve and liner together, and seal means disposed between said sleeve and said liner adjacent the other ends thereof to maintain a seal between said sleeve and said liner while permitting relative axial movement therebetween,

RUEL KIRKPATRICK. HENRY B. YOUNG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,133,270 Dale Mar. 30, 1915 1,730,905 Thomas Oct. 8, 1929 2,395,766 Schreck Feb. 26, 1946 FOREIGN PATENTS Number Country Date 440,521 England Jan. 1, 1936

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