US2648286A - Submersible pump - Google Patents

Description

C. J. BERGH SUBMERSIBLE PUMP Aug. 11, 1953 2 Sheets-Sheet 2 Filed July 28, 1950 INVENTOR M 4 r I Y 5 E 5 N R J'Wm mal a Q1;

Patented Aug. 11, 1953 i PATENT F F I CE GharlesLBergh, Vandalia, Ohio, assignor to The Dayton P'ump,&,M fg. 00., Dayton, Ohio, a cor.-

nora onlo fl i Application. July 28', 1950, SriaLN'o'. 137E496:

(CL. mat-81.7

3 Claims. v t

This invention relatesto submersible electric ope ated p mps; w e a t r and a pump; are interconnected; in unitary; relation for submersion: n V8.11, e mo r n pos axiansnofi the pump. anda vondiorb nea h t. Whil n e e al concern h he vis of an improved pumpof the class described, the ven ion ha-sl art cular; iet or arr n ement; for extending-- wire leads tothe electric motor.

@ne object of the invention is to protect such eadsifroma on-t ct-pw thl lie fluids the well: and from; the: abrasive effect; of contact with the: well ins-i..ng;v

Anothen object of the invention; is to obviate the necessity for; reducin the pump impeller diameten to, allow noom for= the: motor leads to pass between, the. pump: and; the welt casing;

A further-- object; of; the invention 7 is: to provide for simplifiedconnection andv disconnection: of the electrical leads: from the power: source and the; motor leads.

Otheirobiectsandstructural detailsof the invention will. app/ear from the following; descripl- :7 tioni whenread in connection, with the ac'comp'anying drawings, wherein: Fig; 11 is a: vziew ofz submersible pu p in accordance with: the instant invention as installed inia W811i "Fig. Zis as View; of the pump; partly' inelevation and partlyin1=longitudinal section; and

Eigs; 3 4,, 5 and; 6., are views in cross section taken along the respective lines indicated in Fig. 2;

Referringto the: drawings; a. pump in accordance' with the instant invention is shown in Fig. l i a well l lined by a casing. 2, The pump;comprises a; pump unit 3", a motor. unit 4, a suction section 5 interposed between. and, interconnecting thelpumpand motor units, and, a: discharge section 6 on the opposite endofr the pumpmni'tl As shown in Fig. 2, the motor unit comprises a cast body I constituting an extension of a sleeve or asin t e: S1QB e ei n a y nd cal iee o r. oia bez dva ndr na se u d. he eto as by solder n ie sleev 8: moun s: le tric; moo omno ne i u iue a woun sta s nda rotor l i, operation of the motor being effectivoto rotate a shaft l2. The shaft l2 extends through and beyond the body I. being rotatable in bearings l3 and Hi therein and projecting beyond the upper or outer end of the body. Also opening through the upper or outer end of the body I is a passage I5 receiving electric motor leads [6.

The suction section 5 is made as a brass castingor the; like: and;i.s: bolted to the: body 1" by bolts H. A; bore; l8;1teceives the projeotin'aerm' of the shaft; l 2 and;further-mounts-a bearing [9 through whichextendstheglower endrof another shaft 2.1, there being a keyedzconnection between the she-its Ii!v andii l Above, the bearing 19 is. a suction chamber 2; communication with the: Well h ou h sna' edsapart v rtical slotssw se Fis. A vertical. Wall 24:. in section 5; defines a ju box chamber 25; overlying and: communicatin witlsthe passage 15;. A la-ter al opening 2lizinithe wall; 24 provides access: to thechamber; 253, such opening being normally closed; by a; plug: (not shown).=-

Thapumpmn'it 3 comprises a, cylindrical shell 2;! which at itsmneendreoeives suctionlsection 5 and is attached thereto-.aslby soldering; Thatgend o f section 5: which; is; received in the shell 2:11 is term d; as an; impeller housin having. an in:- turnedi flange; 28; providing; a bearing for an impeller-Hand further-havingan axial cylindrical extension 3 I, surrounding; the impeller. Resting unflnjsucjh cylindiiicalextensionisa' multiple stage seriespf impellenhousings 3:2. whio'ho'are the same as. thahfprmedmn theend: ofsection: 5, with the addition of: gathering vanes: 33 (see- Fig, 39 on the underside: thereof Each mounts an impeller 2 9,; which; as v seen; in Fig; has centrifugal: vanes 3.4 radiatinggfrom a hublsfr mounted ontheshaft 2]. A: central? opening 36 defines an inlet for eachi mpelleh which. discharges radially against the'gsidesrofa the: impellerhousing, the discharged fluidi being collected. by the; gathering: vanes 33 ofi the next higher stageimpeller housing and: directed to the inlet 3.& zof:the-next higher stageimpeller.

Each impeller housing 32* is; formed with a longitudinal-slot 3,1 opening to theperiphery of the housing. Whe lthe severlalyhousings are-arranged withthelslots 311 aligned'with oneanother there is; defined avertical, wire passing channel insidethe shell 2]. and substantially. overlying and" communicating; with. the-junctionbox chamber,-25-,in section d Supported inthe shell: 2-1 above-the topmost-impellet stage: is an upper bearing support 38-v of webbed construction f r the free flow of: fluid these-through, Aybearingltfii-in the-center of; sup port 38 receives the upper end of the shaft 2]. Immediately beneath the bearing 39, the shaft 2| is threaded and has lock nuts 4| thereon which engage the hub 35 of the topmost impeller 29, through a spacer 42. The several impellers 29 rest one upon another so that the thrust exerted by spacer 42 is effective to unite the several im- 3 pellers for unitary rotation with the shaft 2|. The periphery of support 38 has a longitudinal slot to register with the slots 37 in impeller housings 32.

The discharge section 6 is formed with a cylindrical flange 43 received in the outer end of the shell 21 and presents a chamber 44 communicating through a threaded bore 45 with a discharge conduit, as the pipe 46 of Fig. l, for carrying fluid out of the well. A wall 41 in the section 6 defines a junction box chamber 48 therein. A longitudinal passage 49 (see Fig. 6) communicates with the chamber and opens through the top of section 6 alongside bore 45. A lateral opening 5| into the chamber is normally closed by a plu (not shown) The wire passing channel formed by the slots 37 in the impeller housings 32 has a length of electric cable 52 therein. One end of such cable extends into the lower junction box chamber 25 where it is joined to the electrical motor leads l6 which are introduced into the chamber 25 through the passage l5. The other end of cable 52 extends from the wire passing channel,

which is considered to include the slot in bearing support 38, into the upper junction box chamber 48. There it is joined to electrical wires 53 projecting from a cable 54, the cable 54 being introduced into the chamber 48 by way of the passage 49 in the outer end of which is a bushing 55. The cable 54 and wires 53 therein lead from a suitable source of electrical power and extend down into the well alongside the discharge conduit 46. A completed connection,

through the cable wires 53, cable 52 and wires l6 serves, therefore, to connect the motor to a source of operating power.

In effecting such connections it will be understood that the cable 52 is in efiect a part of the pumping unit 3, normally disconnected from both the motor leads [6 and the power source leads 53. In assembling the device, which is 01' course done above ground, the cable 54 is inserted through passage 49 into the junction chamber 48. There the free ends of the wires 53 and the free ends of the wires in cable 52 are pulled out through the lateral opening 5|, joined together as indicated in Fig. 2 and then reinserted in the chamber 48. Similarly in junction box 25 the lower ends of the wires in cable 52 and the motor leads l6 are pulled out through opening 26, joined together and then reinserted in chamber 25. Both openings 26 and 51 are, of course, closed by plugs when the connections have been made.

What is claimed is:

l. A submersible electric motor operated pump, including a cylindrical shell, a suction section and a discharge section in respective opposite ends of said shell and projecting therefrom, junction box chambers in said sections, an electric motor secured to said suction section and presenting a wire passing opening communicating with the junction box chamber in said suction chamber, pump impeller housings slidably fitting said shell stacked one upon another in said shell and retained therein by said sections, and individual slots in the peripheries of said housings cooperatively defining a longitudinally extending wire passing channel inside the shell and communicating with said junction box chambers, said slots being formed by a portion of the wall of each housing and being disposed inwardly toward the periphery of the impeller pertaining to the housing.

2. A submersible electric motor 7 operated pump, including a cylindrical shell, a plurality of pump stages slidably fitting the shell stacked one upon another in said shell, each said stages comprising an impeller housing presenting a longitudinally extending peripheral slot, formed by an indentation in the wall of the housing, said slots when aligned defining a wire passing channel, a suction section and a discharge section mounted in respective opposite ends of said shell and clamping the stages therein, said sections extending out the ends of the shell, junction box chambers in said sections communicating with the opposite ends of said wire passing channel, electric leads in said channel having their ends extending into said chambers, and openings into said chambers through the sides of said sections for access to the ends of said electric leads whereby they may be connected to and disconnected from other electric leads from a source of electric power and from an electric motor.

3. A submersible electric motor operated pump, including a cylindrical shell, a suction section telescoping one end of said shell and a discharge section telescoping the other end of said shell, a plurality of pump housings each having a peripheral wall and slidably fitting said shell and stacked therein on top of said suction section, a bearing support member beneath said discharge section and on top of the uppermost of said stages, said sections being secured to said shell and clamping the said stages and member tightly therein, each of said housings having a portion of its said wall formed inwardly to define a notch and said member also having a peripheral notch, said notches being adapted for registration to form a longitudinally extending slot inside said shell, each of said sections having a junction box chamber communicating'with an end of said slot for passing wires along said shell, pump impellers in said stages, and a shaft mounting said impellers and having one end journaled in said member and its other end journaled in said suction section.

CHARLES J. BERGH.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,968,566 Moran July 31, 1934 2,256,659 Thrasher Sept. 23, 1941 2,270,666 Arutunoflf Jan. 20, 1942 2,320,708 Yost June 1, 1943 2,506,827 Goodner May 9, 1950 OTHER REFERENCES An article Der Entwicklungsstand der Tauchpumpen by C. Pfleiderer in Zeitschriit des Vereines Deutscher Ingenieure, vol. 8, No. 9, February 29, 1936, pp. 253-256. (Copy in Div. 9.)

Images