US1609306A

US1609306A - Deep-well pump

Info

Publication number: US1609306A
Application number: US751490A
Authority: US
Inventors: Peterson Arvid
Original assignee: Laval Steam Turbine Co
Current assignee: De Laval Steam Turbine Co
Priority date: 1924-11-22
Filing date: 1924-11-22
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

Dec. 7 1926. 1,609,306

yA. PETERSON DEEP WELL PUMP Filed Nov. 22, 1924 2 Sheets-Sheet l OZ 5 a 2 Z Z H 7? (V ZL/ 1:/

Dec. 7 1926.

A. PETERSON DEEP WELL PUMP Filed Nov. 22, 1924 2 sneetssheet 2 W/T/VESS.'

.5s pump., l, Mounted in rmbber-nne Pfemea Dee. 7,1926.;

' oFF'iCE.

'r11-.ransom .ors sammeln-.maw cansar, fr :snm oonrm ,por rnnnrorr, Naw Jansmr,

A ooaroaarro'n oir- Naw maaar'.

f iniciar-WELL rm. v

-.l been necessary to place the pump at the bottom of the well or within about thirty feet thereof, in order to ,obtain suction, and to actuate the pump b means of shafting which affords a connc 'on betweenthe pum l and engine or motor at ground level. Suc

a construction lnaturally requires shaftilll-g.

of a length e ual to the depth of the we which, when t e well is of any considerable depth,` presents diicult problems` to properly support the shafting and to eiect its proper lubrication.

construction has been found to be relatively ineilicient, since the' longshaft can only be driven at relatively low the 'use of a pump having a'considerable numberof stages even for a comparatively moderate head. s

Now. it is the object `of my invention to provide a centrifugal pump for deep wells 3" combined with la turbinefor driving it as aV self-contained unit, which-maybe positioned at the bottom of a well.

Further objects of my invention are to -produce a combined vtu-rbine pump which will be self-lubricated and vautomatically balanced, and of such a structure .as will enable its economical production and ahigh degree of eiiciency 4and durability in operation. y

the nature and l will proceed to a detailed description thereof with reference tothe accompanying drawings, in which I have illustrated a preferred` embodiment, and which- Fig. 1 is a secti nal view of a pump `embodymg my invention. l

Fig. 2 is a sectional view of a modification of the structure shown in Fi 1.

within which a combined, pumpand turbine casing b is secured by and'which, extending to a desired point, of delivery, serves as a discharge bushings c eep wells,A precludes to avoid whipiinlg uc that is, shaft d, turbine -wheels z', a' and ims'peed, necqsitating Having now indicated, in a general way,l 'purpose ofpmy invention, I

Referring to Fig. 1, a in` cates a casing threaded engagement.

Application #leal-.November Staf-1.8M." Serial No. '151,490 i in the `casing b isa shaft d ,which asses `through a partition e, serving to 'divi e the casing and provided with ports controlled by check valves '9. Connected to the upper end of the casing b is a water supply\p1pe f adapted to lead la. supply of water, at sufficient head, to the casing in which it passes through'a diffusing passage IL to a` turbine wheel i secured on shaft d.v The discharge `from the first wheel i- Aasses throu h a secturbine to a secon ond diffusing passa e the water passes into wheel z', from whic assrenoalro nl: Lavar. eraan zumF the discharge pipe a, above the partition e.

' Below the partition a pump impeller j'is secured to shaft d and communicates with a suction opening k. The discharge from the impeller ,passes through check valve g and -mixes with the water from the turbine wheels. A y The combined turbine and pump rotor,

vpeller y', is carried on ahydraulic balancing arrangement comprisin a balancn disc l adapted to be supported between'adipende ing flange m and an internal ange 'n on the casing by the pressure of the water supply for turbine wheels z', i. Above vthe disc is formed an'equalizing chamber o in co v nication with the water suppl through the space between flange n and t e under surface of disc Z and 1 n 'communication with a leak-off :pipe p connected to the suction opening s, through the space between dependingl flange m and the upper surface of .the disc Z,`through annular passage g'about shaft d.

The o rationA of the pum will, itis thought, e obvious, it being un erstood that.

-point through the -discharge pipe. It will be noted 'that the check valves g will re-l vent the passage o fwater from the. tur inev wheel/to the pump pump vshould lose its prime.

in the event that the t which forces water, drawnA When the water supply ent-ersicasing b, .l

itfexert's a pressure on balancing disc Z ipefor the `wwhich causes the rotor to be lifted d commumcation between chamberjo and the on flange m. Water'from casin leak-off pipe is shut 'o by the disc seating.

' b then bypasses disc Z and pressure b uil s u on the top o'f the disc. until, with the ad 1t1on of the weight of the rotor, it overcomes the pressure on the underside of the'disc. The rotor then sinks, causing communication ,to be opened between chamber o and the leakot pipe, with the result that the pressure on the topof the discfalls.' The disc then vassumes a position in which the communication of chamber o with the leak-oit pipe will be such that a balance will be effected between'the ressur'e beneath the disc and that above comiined with the weight of the rotor. In operation, the casing b will be filled with water which will work into and effectively lubricate rubber-lined bushings c. In the case of the upper bushing, water will work down along the shaft from the top of the bushing to which it has access through a passage u affording communication with the sup ly pipe, and in the case of the lower bus ing, .water supplied from the discharge of the impeller through a pipe v will work upward along the shaft.,

Referring" now to Fig. 2, in which I have 'l shown a modifiedstructure comprising a dis-.

charge pipe-'a' and a pump casing built vup of superimposed sections b secured together by means of bolts s: The casing serves to support in rubber-lined bushings c a shaft d upon which ismounted two turbine wheels i', receiving a supply of water through a supply pipe f, through diffusing passages h', and two implellers j', the lower one of which draws water t charges into the upper one whic discharges the waterinto the discharge pipe when the water from the lower turbine wheel is picked up and thewhole discharged.

The turbine wheels 'i' and the impellers j are adapted-to 'run on annular bearing rings t and the shaft d is supported by a hydraulic balancin device similar to that described above in re erence to Fig. 1.

It will now be clear that by virtue of my invention I have provided, a self-contained,

Y self-lubricated pump turbine unit of high efdeparting rough a suction openin k and dis.

icienc and operable with the elimination of the di culties heretofore presented in deep well pumping.

It will be understood thatv various structural modifications may be made in the device described and that the number of turbine wheels and impellers may be varied to meet the requirements of conditions without from the spirit of my invention.

l 1. eep we pum com risin acasin a shaft mounted in slaid csingga turbill wheel mounted on said shaft, an impeller mounted on said shaft, a partition dividing said casin between said turbine wheel and said impe ler, a port in said partition and means adapted t receive water discharged from said turbine wheel and from said impeller. y

2. A'dee well pump comprising a casing, a rotor inc uding a turbine wheel and an impeller mounted in said casing, a partition provided with `a port dividing saidcasing etwee'n said turbine wheel and saidimpeller and means4 for controlling the. port in said partition.

3. A deep well pump comprising a casing, a rotor including a turbine wheel and animpeller, separate means for supplying water to the turbine wheel and to the impeller, a partition provided with a port separating said impeller from said turbine wheel and a discharge pipe common to both.

4. A deep well pump comprising a casing,

a rotor including a turbine wheel and an impeller, a plartition in said casing extending between t e turbine wheel and the impeller and provided with a port, a dischar e ipe adapted to receive water discharge om said turbine wheel and water discharged fromsaid impeller through saidport, and

a check valve adapted to prevent water dis-y charged -from said turbine wheel from entering said impeller.

In testimony of my hand, at Trenton, New Jersey, on this 19th day vof November, 1924.

ARVI'D PETERSON.

which, I have hereunto setv