US1633058A

US1633058A - Pump plunger

Info

Publication number: US1633058A
Application number: US749132A
Authority: US
Inventors: John A Zublin
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-11-11
Filing date: 1924-11-11
Publication date: 1927-06-21
Anticipated expiration: 1944-06-21

Description

J. A. ZUBLlN PUMP PLUNGER June 21 ,v 1927.

Filed Nov. l1. 1924 F Z wff/ /z /6/ l 3 .N l L3 H3 5 5` Z0 32234 Z 2%.255 H@ 75 Z /ww l pump.

Patented June 2l, 1927.

'UNIT-ED JOHN n. ZUBLIN, oFjLos ANGELES, CALIFORNIA.

PUMP -rLUNente Application ilcd November 11, 1924. Serial No. 749,132.

This invention 4relates to reciprocating pumps, and it f relates particularly Y jto Y those types of pumps employingcup attachments l comprises a barrel carried on lthe tubing and '-f situated at the bottom of the well in which 'barrel a plunger is Y reciprocated. The plunger may comprise` a body lnember to which cups` are secured, these cups being secured either 'at the `'top or the bottom of the plunger or at both ends, the purpose of these vcups being to-prevent leakage around the plunger. A pronounced .disadvantage of the VVpresent types of plunger using cup attachments is that' the upper cup member carries 'the entire weight of thehead of oil in the well. vThi'sfn'ieans that the 4pressure there'against causes considerable 'frictionlbetween this upper cup and the barrel ofthe pump and `results in a rapid wearing away "fof both plunger and barrel. `Another disadvantage is that a cup situatedfat. the

Vupper endiof avplunfgeriis exposed and any sand or silt gravitatin'g will collect andv pack under pressure im the cupwmember causing it to'bind and rapidly wear away. In other words, inthe-present types of reciprocating plunger employing cups, the cups are inno The use of -cupson the.

way protected. l lower` endvof a plunger 1s dlsadvantageous inasmuch as when the plunger is'hfted 4from plunger is moved out of `the barrel, the oil thereabove will rush into the space in ithe pump barrel createdfby the removing ofgthe plunger. The oil rushing into the barrel lat "a terriiiic speed catches the lower c up members'of the plunger andcauses aninstan taneous destructionthereto n n It is an object lof this invention to lprovide a plunger having a cup attachment.. -\vl1ich is'superiorto-the other plungers of thistype inasmuch as the novel arrangement vthereof lengthens fthe vlifeof the cup;mem-

bers and Vincreases f the efficiency 'of the It is also an objectof this inventioruto A"provide a plunger of this type having acup attachment which is protected :.agafinstex- `cessiye pressures4 and strains. .and :protected V'froinsand "Iaecomplish this by'fdisposing the line 4-#4 of Figi.

of the cu-p `attachment between upper .and lower :protective means. Y i

.It is a further object ofthe inventiony to lprovide in a plunger of this character a unique construction of cup `attachment `which facilitates its disposal in the manner mentioned.

Other objects and'advantages of the Yin- Vention will be made evident hereinafter.

Referring tothe drawings which are for illustrative' purposes only,

Fig. l is a Vertical sectional View through a pump embodying thefeatures of my invention, the plunger of -this lpump being broken and contracted in Variousplacesin a manner to showthe essentials thereof.

Fig'. 2 is a section taken :as indicated `by the line 22 of Fig. 1.1

i Fig. ,.3 is .a l'section taken as indicated `by ithe line 3*-3 of F ig. l.

Fig. 4 isa` fragmentary ysection taken on In the f-orm of my hinvention shown in the drawings, Ifprovide .a pump barrel 11 which is suspended on tubing in-,a well in which -pump `barrel l1 a pump vplunger l2 `.is reciprocableyThe pu-mp plunger l2 comprises an upper Iplunger member v`13 and a `lower plunger -menfber .14 between `which upper and' lower 'plunger members a cup attachment l5 f1s connected. -The. upper *plunger member l2 comprisesan attachment `member 117 having pin 1,8;to which rthe lower socket `19: of a sucker rod string may Vbesecured. VAfplungerbody 21 isconnected the barrel of the pump, 'as the body of the to theilower'end ofthejbody 1,7 by means of a threaded :projection 22 ywhich screws into plunger body 21 .is alnipple 25 which threads 'tint-o lthe :chamber 26 ofL thejbody` 2l, as in-y dicated-atfQT f The nipple 25 has apassage 1284 therethrough which` is :arrangedto be closedbyaball .24 infthe chamber 26 and vresting. againstthe seat-29provided by. the

.upper'fendofwthenipple-. Onthe .cylindricalfportion Stof thel nipple 25 is placed a base :portion 32o-flan upper plunger .sleeve B3. .isleevefjs of ,such a:size asftoengage'fthe .inner wall ofrthe .barrel v llhaving a fluid- :tightirel'atonship therewith. y,

The externalfdiameter of theplunger )i y{hrthethreaded.projection-B6 of the nip- .ple' Qis screwed atubular body portion 137 of 'the' dup attachment 15, this tubular body nio 37 having a head 38into which the threaded projection 36 is extended. The upper face 39 of the head 38V engages with the lower face of the base 32 of the upper plunger` sleeve 33., clamping it securely in place against the shoulder provided by the lower end of the body 21. `Against an annular' shoulder 40 of the tubular body 37 a cup 41 placed, and alternately thereafter spacer of a lip 47 of an adjacent cup 40. `A lower shoulder 48 of each of the spacers 42 is are ranged to engage with the upper face of the lip 47 of an adjacent cup 40, this serving to clamp `the cups 40 between the upper ace and the `lower shoulder of the spacer members. Gnthe lower end ofthe tubular portion 43 ofthe body 37 is secured a nut 50,

this nut having arecess 51 into which the lower end 52 of the tubular portion 43 is threadably secured; When the nut 50`is in place, it'serves as a means for clamping the cups and spacers in'their pro er positions.

On the lower threaded projection 53 of `the nut there is screwed a flexible joint body54, this body 54 having a recess 55 into which the projection 53 extends. A securing pin 56 extends through an opening 57 provided in the lower portion 58 of the body 54,

this pin` 56 having a T head 59 which eng i gages with the upper face 60 of the portion 58. The body 54has an Vopening 61fwhich connect-s through an opening 62 in the nut 50 with a central passage 63 ofthe tubular body 37, Vthis passage. 63 in turn connecting with the opening `28 in the nipple 25.` The shaft portion 64 of thepin 56 threadsinto an opening `65 situated in the upper end of a lower plunger member body 66. lower plunger member body 66 is of the same construction as the upper plunger body 21 having' a chamber 67 into which the upper threaded end 68 of a lower nipple 69 is threaded. Aball 7 0 is arranged, as shown, to rest on the upper face 71 of the nipple 69 in a manner to close the passage 72 therethrough. A lower'nut 73 is secured on the lower end 74 ofthe nipple 69,` this lower nut 73 having a recess 75 into which the portion 74 of the nipple 69 threads. The nut 73 serves asV a means for securing a` lower plunger sleeve 77 in place, i this 'plunger j sleeve 77 having a base 78 which'is clamped between the" lower face 79 of the lower plunger `bodyf`66`and the upper faceV 80 `of the 73. Extending upwardly from the base `This- 78 is a sleeve portion 82, the outer face of this lower plunger vsleeve being of such a size as to contact with the inner face of the barrel 1l having luidtight engagement therewith. This plunger 12 is arranged to Vbe reciprocated in the barrel 11 through a string of' sucker rods which extends from the surface of the well.

During the downward travel of the plunger 11,

theballs

24 and 70 are removed from their seats and oil is allowed to flow upwardly into and above the plunger, this oil passing'through the opening 72 in the lower nipple 69, through the chamber 67 into the interior of the lower plunger sleeve 77 and through the opening in the flexible VEl() joint body 54. It then passes through the

openings

62, 63 and 28 past theball 24 and intothe chamber 26 of the body 2l. The

oil passes from the chamber 28 to the intef The weight of the `oil iscarriedentirely if by the upper and lower sleeve members'as` long as a fluidtight relationship between the sleeve members and the barrel exists. When a slight leakage occurs in the upper plunger sleeve 33, the cup `attachment 15 is called-7 upon to prevent.` leakage of the'pump and even under these circumstances, the wei ht thereon will be very small. Any sand which gravitates from the oil collects entirely in the

sleeve members

33 and 77, and not in the cups 41. This is `because of the` fact that the cups 41 are not indirect contact with the oil flowing through the plunger.

From the drawings `and description, it

`will belseen thatin theconstruction shown, the cup attachment 15 iscprotected entirely against strains and from sand by the upper member 12.1The lower plunger plunder member 14 serves as a protection for the fcup attachment 15 when the plunger is being removed from the barrel 1l. In pumps having cup attachments, but not having a lowermember as does my invention, the `oil above the plunger will rush violently into the barrel d as the body portion of the plunger moves from the barrel. Oil rushing into the barrel` cat-ches. the cups in a manner to immediately damage them and unfit themfor future use. In my construction when the plunger is removed" from the barrel,ithe inrush of oilwill notoccur until the lower plunger member 14 moves from the barrel 11. The cu` attachment l5 is at this time a considera le distance above the barrel and will not be` al'ected'byl the rushing of theoil into the spaceA in the member created `by` the removing of the plunger.

Practical experience` has proven 'that theV same kind of cups which previously lasted for a period of about two weeks in the old l Ui) types of pump ma be used four times as long in a plunger o my invention. i

It is plainly obvious from the drawing that the lower plunger section is flexibly or hingedly connected to the cup attachment in such a manner that it may adjust itself laterally in the pump barrel, but independently of the cup attachment.A There is, however, no' relative axial movement between the cup attachment and the pump shaft. It is highly desirable to have this lateral adjustment so that the cup attachment and the plunger section can individually align themselves in the pump barrel, since the pump barrel is sometimes crooked.

I claim as my invention:

l. A reciprocating pump comprisingza pump barrel; and a plunger reciprocable in said barrel, said plunger consisting of a sectionhaving a plunger sleeve and means secured to said section for providing a fluidtight relationship between said barrel and said plunger so that it is only laterally adjustable relative to said means. I

2. A reciprocating pump comprising: a pump barrel; and a plunger reciprocable in said Abarrel consisting of an upper' section, a lower section, and means connected between said sections and flexibly connected to one of said sections for contacting said barrel so as to provide a iluidtight relationship therebetween.

3. A reciprocating pump comprising: a pump barrel; and a plunger reciprocable in said barrel consisting of a section havingl a plunger sleeve and a cup attachment flexibly secured to said section, both said section and said cup attachment being adapted to have engagement with said pump barrel.

'-1. A reciprocating pump comprising: a pump barrel; apump plunger reciprocable in said barrel consisting of an upper plunger member; means rigidly secured to said 'upper plunger member for wiping said barrel when said plunger reciprocates and a lower plunger member flexibly secured below said means.

5. A reciprocating pump comprising: a pump barrel; and a plunger reciprocable in said barrel consisting of cup members engaging said barrel, upper protecting means arranged above said cup members, and lower protecting means having a sleeve lieX- ibly arranged below said cup members so as to be laterally adjustable relative to said cup members.

6. A reciprocating pump comprising: a pump barrel; and a plunger reciprocable in said barrel consisting of an upper plunger member, a lower plunger member and means said barrel consisting; of an upper plunger member, a cup attachment rigidly secured to the lower end oi said upper plunger member; and a lower plunger flexibly secured to the lower end of said cup attachment.

8. A pump as set forth in claim 7 in which said cup attachment comprises: a tubular body; cup members arranged on said tubular body; and spacer members arranged on said body for spacing said cup members.

9. In a reciprocating pump of the class described, the combination of a plunger comprising: an upper plunger member; a lower plunger member; a tubular body rigidly secured to one of said plunger members and flexibly secured to the other' of said plunger members; cup members carried by said tubular body; and spacer members arranged on said tubular ybody for spacing said cup members.

10. In a reciprocating pump of the class described, the combination of a yplunger comprising: an upper plunge-r memberga tubular -body rigidly secured to said upper plunger member; cup `members carried by said tubular body; spacer members arranged on said tubular body for spacing saidcup members; a lower' plunger member; and means for flexibly securing said lower plunger member to said tubular body.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 5th day of November, 1924.

JOHN A. ZUBLIN.