US2350898A - Pump - Google Patents

Description

June 6, 1944. Q C, JETTER l 2,350,898

PUMP

INVENTOR.

Patented June 6, 1944 UNITED STATES PATENT c OFF-ICE Y l n 2,350,89vsl n Cytus C. ,letten Grandltapids, Mich. Application separater 1s, 1943', serial No. 502,082

comme. (ci. '10s-195),"

This invention relates to improvements in pumps.

The main objects of this invention are:

First, to provide a packing for the pump rods of oil well and likeI pumps Vwhich is capable of withstanding the severe working conditions yto which such pumps are subjected in use, at the same time allow'a freer movement kof thev pump rod packing plunger or the packed portion of the pump "rod whereby the wear is kreduced -to a minimum.

Second, to provide a resilient supporting connection between the pump rod packing cylinder and the casing which permits the adjustment of the reciprocating parts to each other and thereby minimizes friction and wear,

Third, to provide a structure in which a plurality of packing rings are spacedthroughout the length of the packing plunger thereby providing a long bearing with sufiicient clearance `between the plunger and the cylinder to minimize friction and'at the same-time provide an efficient seal. 1 i

Fourth, to provider4 a structure vhaving these advantages which may be adapted to standard l or widely used types of pumps.

Objects relatingto details and economiesv of the invention will appear from-the'de'scription to follow. The invention is dene'd'in'the'claims. A preferred embodiment of the invention is illustrated in the accompanying drawing, in

which:

Fig. 1 is a'fragmentary side elevation partially "in longitudinal section of a structure embodying my invention as applied to an oil well pump.

Fig. 2 is an enlarged fragmentary vie'wmainly in longitudinal section 'illustrating the details ofthe mounting of the packing' cylinder 4in its relation to the pump casing. Y Fig. 3 is a fragmentary View partially in 'longitudinal section of Ya `mcniiied form or embodilmentofmyinventon. y N

InA the embodiment the tubular pump casing ori the upperV end of I the pipe of a well and@ Vthe Aplur'iger rod. '3L-is T- fitting threaded'on theend of the casing andinas an oil outlet pipe 4 connected thereto.l Threaded linto the outer vend of this coupling-'is'lan adapter 5 having an internal bore is' and'externallvl threaded at `1 to receive the' vclamping sleeve or cap 8. The sleeve 8 hasan inturned flange 9 at its Aupper end. The pum'p rod packing cylinder projects into the casing I a substantial distance andalso projects from the casing.

The pump rod packing cylinder 'I I reciprocatcs fwithinithis cylinderIU. y

Theycylinder I0 is provided with an annular flange from but iixedly secured thereto as by Welding as indicated at I3. This supporting member is sunicient depth case, an annularthrus'thmember I8 disposed between the rubber orl other resilient supporting elements- I4, the inner of which is .seatedon the end offthe adapter 5 and the outer of which isbetweenthe iiange 9 and the supporting flange I2 on the cylinder.

, .The diameter of the cylinderrelative to the internal diameter-of the casingl I, vthe adapter 5, and thefiange v9 of the `clamping collar is such ,asL to permit a substantial vtilting movement of the .cylinderwhichrispermitted by its resilient supporting elements. These supporting members also constitute .packing members.

The vpump rod packing plunger Ais provided with a pluralityof vertically spaced packing ring grooves Idwhich are preferably arranged in verticallyspaced groups as illustrated. 'Ifhe split packingor: plunger rings I6 vare preferably of the resilient metallic type and they are arranged in the.,grooves The pecking ring ,grooves are 0f to allow free radial movement of the packing ringstherein and they also have sufficient tolerance in their axial width to permit this free movement. This provides an effective packing while permitting clearance between the packing plunger andthe cylinder tov allow very free reciprocatingmovement of the plungerf' The packing cylinder is of such length as to `In the fembodim nt of myvinvention shown in Fig. k3, the clamping sleeve I1 is threaded directly upon the take-oli` coupling 3. In this is seated on theend of the take-oifcoupling 3 to support the illustrated, `I 'represents v I2. preferably formed separately" there- Y climbs,

Aduce, undue wear innerof the resilient support members I4.

In' structures embodying my invention, it is not necessary to replace the packings frequently asvisvnecessary in the widely used type of oil I attribute the Awear on the packing in these v,pumps quite largely to the swaying of the pump rod vduring vthe'reciprocal-.ing movement tliereof. yThis results"inV wearing the packing vvd randsoon necessitates the re-packor' results" 'in' the leaking'of oil which is not out, 0f ine Yonly]'vl/"aste'f'ulbutr constitutes serious re hazard.

has been demonstratedby 'use' that my invention cuts this replacement toa minimum. The

swaying or tiltingof the pump rod does not pron 'on the packing'and, further, the packing rings vare so Varranged throughout the length of the packingrod that. a long bearing is provided and this ,also minimizes wear on the `cylinder wall or on the plunger.-

The timeV element is also lan important factor as it' isnot necessary tostop the pumping operationV when the packings are being renewed 'or replaced, and further than'that, the packing fringsA are v ery long lived and while they :provide ari-'effective Aseal Athey are sufciently lubricated to avoid excessive wear.

useated on the Yend/.of`l s resilient'.

2 packing 1c s theinternal'V diameters' oiAv the"l casing, the'adapter, `an`d`offtheY flange 'of said clampingsleeve, Where- I have illustrated and described my improvements in highly practical embodiments thereof. I have not attempted to illustrate or` describe other adaptations or embodiments as it is believed that this disclosure will enable those skilled in the art `to embodyor adapt my invention as may be desired.

Having thus described my invention, what-Iv claim as new and desire to secure byLetters Patent, is:

1. In a pump, thecombination of a tubular-V casing provided with a take-oft' T-coupling, an

Cil

pump rod packing cylinder extending into said casing and provided with an annular supporting llange, inner and outer annular resilient supporting elements on opposite sides of said flange, the inner element being` seated on the end of said adapter, a clamping sleeve threaded upon said adapter and having an inturned ilange at its -outer end engaging the resilient support element,

the diameter of said packing cylinder being substantially less than the internal diameters of the l casing, the adapter, and of the ilange of said adapter threaded into the upper arm of-saidM coupling, a vpump rod packing cylinder extend ,inguintolsa-id casingand provided with an annular g supporting ilange', ,annular lresiliei'it supporting' elementsv arrangedone :above`A andl the otlierlbelow said 'flange "the lower element being f adapter, a clamping sleeve threadedimn Saidfadaptr :and having an inturned ilang'egat'iits outer end engaging the rportelement-lthe1dia eter of A,said

ylindrer i being j fsubstalntiallyV 4less4 "than by substantial tilting movementof said cylinder -on-its said resilient supporting elements is'permitted, a pump/rod, provided Withga packing Vplunger reciprocating'within saidpacking cylin-V der` and having vertically spaced groups of pack- Y, ingring grooves, andsplit resilient metal-lic packl.ing ringsrrarranged in said packing ringgroove's.

2. In a pump, the combination of a tubular casing provided with atake-oft T-coupling, anv

adapter threadedV into, the upperl arm. offsaid coupling, afpump rodpacking cylinderextending int/o.. said casing and providedwith. an, annular supporting Li-il'airige," annular` resilient A ysupportingelements arranged fone above Aandthe other `belowsaid ilanga the lower element' being seated'onthe'end ofsaid adapter a clamping .sleevethreaded upon said `adapterandhaving an inturned flange at its outerendengaging .the

resilient support element, the diameterof. saidr packing;cylinderv beingV substantially less thanv the internal diameters1oi.-the casing, the adapt'- er,` and of theellange of .saidl clamping sleeve,

whereby-substantial ,tilting l movement ofv said cylinder on its said resilient supporting elements fis` permitted, and `a-.pump rod provided 'with a packingplunger --reciprocating within saidl .pack-v ingcylinder. l f 3. In apump, the combination of; a tubular casingprovided with-a take-,off ',l"ooupling, anl y adapterV threaded into the upper arm ofsaidcoupling, a. p umprod. a pump rodpackingcylinder extendingr into 'said casingpand provided', vi'r'i'tliA an annular supportingk llange; annular resilient-supporting elements: arranged eneigabove; and '-itiieVVV Vother' below said` flange, the'lower lelementbeing seated Von Atheendl of lsaid adapter, aclamlping sleeve threaded upon said adapterV and having. an

.inturned'ange' atpits outer endengaging theiresilientjsupport, element.` the diameter. `0f said packing cylinder vbeing `substantially Aless than the internal diameters,oithecasing, the adapter,

and of the ange'of said clampingsleeve, whereby substantial tilting Inovenient of. said cylinder on .its said resilient supportingielements is per- 'mittedxand a packingplunger mounted on said :pump rod andreciprocatingjwithin said cylinder. 1.4:. In-afpurnp,thecombination of; ay tubular Y* icasirig,';an-adapter at the end Aof said casing, a

clamping sleeve, whereby substantial tilting movement of said cylinder on its said resilient supporting. elements is permitted, a pump rod provided with a packing plunger reciprocating Within said packing cylinder andl having'a plurality of spaced packing ring grooves, and split resi-lient metallicpacking rings arranged in said packing ring grooves. 1

5. Ina pump, the combination of a tubular casing, an adapter at the end of said casing, a

pump rod packing. cylinder extending into said `casingV and provided with an annular supporting hange, vinner and outer annular resilient supl porting elements on opposite sides vof said ange,

the inner element being seated on the end' of said adapter, a clamping sleeve threaded upon said adapter and having an inturned ilange at its outer end engaging the resilient support element, the diameter of said packing cylinder being substantiallyless than the internaldiameters of the casing, the adapter, and of the flange Vof said clamping sleeve, whereby substantial tilting .movement of said cylinder on its said resilient supporting elementsv is permitted,` and a upump rodl provided with a packing plunger reciprocating within said packing cylinder.

6. In a pump, the combination of a tubular casing, a pump rod packing cylinder disposed within said casingto extend therefrom and having an annularsupporting'flange, .l inner vand outer resilient supportingelements disposed on opposite sidesof said vflange andy tiltably supporting saidicylinder withinthe casing, the in- Yner being in supported relation tothe cylinder, a :threaded clamping sleeve engaging lthe outer element, a pump rod provided with a packing plunger reciprocating within said packing cylinder and having vertically spaced packing ring' grooves therein, and resilient split 'metallic packing rings arranged in said grooves.

7. In a pump, the combination of a tubular casing, a pump rod, al pump rod packing cylinder disposed withinsaid casing :to extend therefrom and having an annularsupporting angainner -and outer'resilient supporting elements disposed on opposite sides of sadange, the inner being in supported relationto the cylinder, a threaded clamping sleeve engaging the outer element and a packing plunger mounted on said pump rod and reciprocating Within said ,-cylinder.

.Y 8. In a pump, the combination of a tubular casing, a pump'rod, a pump rcdfpacking cylinder extending into said casing, means for tiltingly Asupporting sa-id packing cylinder within said-casing, said supporting means including .combined resilient supporting and packingelements for` the cylinder, a pump. rod lpackirig 1 plungerimounted on said pump rod to reciprocate within said packingv Ycylinder andhaving vertically spaced packingk ring. grooves therein,

Aand split resilient packing rings arranged in said rpacking-ring grooves.

. CY'RUS o. JETTERQ,

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