US1847586A

US1847586A - Hydroturbine pump with tapered port members

Info

Publication number: US1847586A
Application number: US444837A
Authority: US
Inventors: Harold E Adams
Original assignee: Nash Engineering Co
Current assignee: Nash Engineering Co
Priority date: 1930-04-16
Filing date: 1930-04-16
Publication date: 1932-03-01
Anticipated expiration: 1949-03-01

Description

3 Sheets-Sheet 1 JNVENTOR ZroZE-md* BY 'Y' i RNEYJ H. E. ADAMS Filed April 16. 195o March l, 1932.

HYDROTRBINE PUMP WITH TPERED- PORT MEMBERS WITNESS:

March4 1,1932. H. E. ADAMS HYDROTURBINE PUMP WITH TAPERED PORT MEMBERS Filed April 16 1930 5 Sheets-Sheetl 2 Q @SX1 S.

WITNESS:

H. E4 ADAMS March 1, 1932.

HYDROTURBINEPUMP WITH TAPERED PORT MEMBERS Filed April 16, 1950 5 SheetS-Sheet 3 A TTORNEYJ' Patented Mar. 1, 1932 UNITED STATES PATENT oFFIcE HAROLD E. ADAMS, F SOUTHl NORWALK, CONNECTICUT, ASSIGNOR T0 ENGINEERING COMPANY, SOUTH NORWALK, CONNECTICUT,

CONNECTICUT NASH A CORPORATION OF HYDROTURBINE PUMP WITH TAPERED PORT MEMBERS Application filed April 16,

This invention relates to hydro-turbine pumps of the type employing water or other liquid as the pumping medium and in which the water alternately enters and recedes from a series of pockets in a revolving rotor Within an eccentric casing. Such pumps have been heretofore provided with tapered or i conical port members extending Withinthe opposite side portions of the revolving rotor, as shown in the prior patent of Irving Jennings, No. 1,718,294, issued June 25,

It is one object of my present invention to provide an improved construction in such pumps, by which close fitting of the relatively movable parts is made possible and by Whic a more eective Water seal of the rotating parts is attained.

A further object of the invention is to provide'a construction by which certain of the parts may be readily rearranged or reversed in position to permit the rotor to revolve in a different direction or to adapt the pump to either a right or a left hand drive.

My invention further relates to arrangements and combinations of parts which will larly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a front elevation of one form of my improved pump;

Fig. 2 is'a Fig. 3 is an enlarged sectional front elevation of the pump shownin Fig. 1;

Figs. 4, 5 and 6 are sectional end elevations, taken along the lines 4,-4, 5-5 and 6--6 in Fig. 3 respectively;

Figs. 4A, 5A and 6A are views similar to Figs. 4, 5 and 6, but showing the parts differently arranged; and

Fig.7 is an enlarged detail sectional view to be described.

Referring particularly to Fig. 3, I have shown a hydro-turbine pump having a rotor 10 mounted on a shaft 11 and rotatable in anti-friction bearings 12--12. The rotor 10 revolves in a casing 15 having heads 16-16 secured thereto by bolts17 and held from displacement by dowels 18.

Brackets 2O are secured to the members 16 ly fitting in circular recesses ets 20.

h n the heads 16 right hand end view thereof,

1980. serial No. 444,83?.

by bolts 22 and support the ball bearings 12. Tapered or conical port members 24 and 25 are mounted in the heads 16 concentric with the axis of the shaft l1. Suitable packing 27 is provided between the members 24 and 25 and the shaft 11 to prevent the escape of liquid along these surfaces.

The members 24 and 25 are also provided with accurately finished end flanges 30, close- 31 in the brackl`hese recesses 31 are accurately concentric With the ball bearings 12. The conical port members 24 and 25 are als tightly fitted against conical bea-ring surfaces and are secured therein by clamping bolts 33. At their inner ends, the port members 24 and 25 extend into conica

center bearing portions

35 and 36 of the rotor 10 and have a close running fit relative there- Suitable inlet and outlet passages, are provided in the headsA 16, and the port members 24 and 25 are provided with passages and port openings communicatinor With the inlet and outlet passages in the heads and also communicatin with the openings in the bottoms of the poc ets in the rotor 10.

With this construction, it will be apparent that the rotor 10, the shaft 11, the bearings 12, the brackets 2O and the conical port members 24 and 25 form an assembly of relatively moving parts, all of which may be easily machined with great accuracy.

lVhen the parts are assembled in the pump casing, the port members 24 and 25 will be definitely located in the pum casing, the brackets 20 will be centered by t 1e port members, the ,bearings 12 will be centered by the brackets 20, and these bearings will in turn center the shaft 11 and rotor 10, all of these parts being accurately concentric With reference to the port members 24 and 25.

The rotor may thus be made with very slight running clearance' relative to the inner ends of the port members 24 and 25, a

condition necessary for satisfactory operation of this type of pump 'shaft when facing the pump outlet and at other times it is desirable that the' driving connection be placed at the left hand end of theshaft. This is readily accomplished with I. my improved construction by merely reversing the shaft 11 in the rot-or 10 and'reassembling the parts. ccasions may arise whenit is desirable to reverse the inlet and outlet connections of a pump, leaving the direction of rotation of the f rotor unchanged. This may be effected by turning the heads 16 one-half of a revolution on the casing` 15, leaving the conical port members 24 and 25 unchanged in respect to the casing 15.

Reference to Figs. 3 each head 16 is divided to 6A indica-tes that into passages 16a and 16b by a mid partition 19, and by cross partitions 19a 'and 19b connecting the end portions'of the mid partition 19 to the inner and outer sidewalls of the head 16. A third cross partitionA 19c connects the inner and outer sidewalls of the head in that portion of the head through which the mid partition does not extend.

By giving the heads 16 a half revolution, the connections between the inlet and outlet openings 30 and 31 and the passages 16a and 16b are so changed thatthe direction of air ow is reversed, while' the direction of rotation of the rotor remains the same.

Figs. 4 to 6 indicate air How in one direction and Figs. 4A to 6A indicate air How, in the opposite direction.

It is also sometimes desirable to reverse the direction of rotation of the rotor in a hydro-turbine pump without changing the inlet and outlet connections. This also may be readily accomplished in my improved construction by reversing the rotor 10, and turning the heads 16 one-half of a revolution relative to the pump casing l5, also interchanging the conical port members 24 and 25 in the heads 16.

The rotor 10 may then be driven in the reverse direction and the pump will function perfectly and without change in the inlet or outlet connections.

I will now describe which an effective water seal is provided between the stationary and moving parts of my improved hydro-turbine pump.

A passage 40 is formed in each port memb'er 24 or 25 and a pipe 41 is provided to supply water to one or both of the passages 40. These passages 40 communicate with annular spaces 42 around the end portions 'of the shaft 11, and the water supplied through the pipe 41 passes through the annular spaces 42 to central recesses 43 in the hub portion of the rotor 10. Stiiening ribs 44 project into the recesses 43, causing a rotary pumping action by which a slight pressure is built up Within the recesses 43. 's pressure is equalized on the two sides of the rotor my improvements by.

thrlpugh connecting openings 45 in the central We Small openings 46 are provided in the inner ends of the port members 24 and 25 and are so positioned that water will be injected from the rotor openings 43 directly into the ports 50 in the bottoms of the pockets in the rotor 10.

Obviously the pumping action of the stifening ribs 44 need not be relied on for injecting the sealing Water into the ports 50, as this action may be produced by sufiicient direct pressure through the supply pipe 41.

This method of supplying sealing Water is much more direct in its action than the previous practice, in which the sealing water Was commonly introduced through the inlet passages of the pump, whereas with my improved construction, the Water is injected directly through the ports 50 and rotor openings. This direct action is more eilicient and does not interfere with the flow of air along the inlet passages of the pump.

The sealing water thus introduced also provides an effective seal between the hub portion 35 of the rotor 10 and the ends of the port members 24 and 25. The joints between the rotor portions 36 and the port members 24 and 25 are effectively sealed by water from the body of the casing introduced through the clearance spaces 52 between the ends of the rotor and the inner faces of the heads 16.

lThe port members 24 and 25 ordinarily fit with suiicient-closeness in the heads 16, but if additional sealing means is desired, the larger end portions of the port members 24 and 25 may be grooved, as indicated at 55 in Fig. 7, to receive lead rings 56 which may be pressed tightly into the joints to form a positive seal. Y

I have thus provided a construction in a hydro-turbine pump such that the parts may be readily cast, machined and assembled and such that the alignment may be easily and accurately maintained.

I have further provided a construction in which the same parts may be re-arranged to provide a pump rotating in the opposite direction with respect to the inlet and outlet connections, and I have provided a pump in which the drive may be readily placed at either the right or left hand end of the pump.

My improved pump also has an effective Water seal for the running parts and is arranged to inject sealing water direct to the rotor pockets.

Claimsto the structure by which a reversible low is attained are not presented herewith, as this feature of my invention forms the subject-matter of a divisional application Serial No. 502,209, iiled December 13, 1930.

Having thus described my invention and the advantages thereof, Ido not Wish to be limited to the detailsherein disclosed, otherwise than as set forth in the claims, but what I claim is l. ln a hydro-turbine pump, a casmg, a rotor mounted therein and havingl pockets With port openings at the bottom thereof, a rotor shaft, heads for said casing, supporting members centered in and secured to said heads, bearings for said rotor shaft mounted in said supporting members, separate conical port members centered insaid supporting members but adjustable axially, and means lto secure said port members to saidheads, said port members having inlet and outlet ports cooperating with the port openings of the rotor. v

2. In a hydro-turbine pump, a casing, a rotor mounted therein and having .pockets with port openings at the bottom thereof, a rotor shaft, heads for said casing, supporting members centered in and secured to said heads, bearings for said rotor shaft mounted in said supporting members, and'separate conical port members fixed in said heads and extending into the sides of said rotor and having inlet and outlet ports cooperating with the port openings of the rotor.V

' 3. In a hydro-turbine pump, a casing, a rotor mounted therein and 'having pockets with port openings at the bottom thereof, a shaft, a pair of supporting members, bearings for said shaft in said supporting members, and separate conical port members centered in said supporting members and extending into the sides of said rotor and having inlet and outlet ports cooperating with the port openings of the rotor,Y` said rotor, shaft, .bearings and port members being concentrlcally allgned by and with said support` ing members.

4. :ln` a h dro-turbine pump, a casing, heads for sai casing, a rotor mounted therein and having pocketsl with port openings at the bottom thereof, and separate conical port members fitted in conical bearing openings in said casing headsand extending into the sides of said rotor, saidport members having inlet and outlet ports cooperating with the port openings of the rotor.

5. In a hydro-turbine pump, a casing, heads for said casin a rotor mounted therein "andhaving poc ets with port openings at the bottomthereof, and separate conical port members fitted in conical bearing openings in said casing heads and having inlet and outlet forts cooperating with the port openings o the rotor, said heads and said port members having additionall aligned port openings therein.

6. In.' a hydro-turbine pump, a casing, a'

rotor mounted therein and having pockets with port openings at the bottom thereof, conical port members extendin into the sides of `said rotor and having in et and outlet ports cooperating with the port openings of the rotor; and means'to supply'sealing water through said ort members to said rotor.

7. In'a hy ro-turbine pump, acasing, a rotor mounted therein and having pockets With port openings at the bottomA thereof, conical port members extending into the sides of said rotor and having inlet and outlet ports cooperating with the port openings of the rotor, means to conduct sealing Water to a recess'between the adjacent ends of said port members, and means o direct said sealing water in jets directly into the ports of said rotor.

8. In a hydro-turbine pump, a casing, a rotor mounted therein and having pockets with port openings at the bottom thereof, conical port members extending into the sides of said rotor and having inlet and outlet ports cooperating Withl the port openings of the rotor, and -means to inject sealing Water directly into the ports ofsaid rotor.

9. In a hydro-turbine pump, a casing, a rotor mountedvtherein and having pockets with port openings at the bottom thereof, a rotor shaft, heads for said casing, supporting members centered in and secured to said heads', bearings for said rotor shaftI mounted in said supporting members, separate conical port members fixed in said heads and extending into the sides of said rotor and having inlet and outlet ports cooperating with the port openings of the rotor, and means to seal said port members in said heads.

10. In a hydro-turbine pump, a casing, a rotor mounted'therein and having pockets With port openings at the bottom thereof, a rotor shaft, heads for said casing, supporting members centered in and secured to said heads, bearings for said rotor shaft mounted in said supporting members, separate conical port members fixed in said heads and having circumferential grooves, said port members `extending into the side of said rotor and havvmembers in said heads.

In testimony whereof I have hereunto `aiiixed my signature.

HAROLD E. ADAMS.