US1809496A - Siphon turbine - Google Patents

Description

E. SUESS S IPHON TURBINE J'une49, 1931.

Filed June 7, 1928 Patented June 9, 1931 UNITED STATES EDUARD SUESS, or VIENNA, AUSTRIA I SIPHON TURBINE Application filed June 7, 1928, Serial No. 283,658, and in Austriahpril 13, I

This invention relates to fall-turbines with siphon-action and has for its object to render possible the utilization of small falls, to improve the effect as well as to simplify the construction in such a manner, that the turbine needs not be fixed in position and can be removed from place to place without difliculty. According to the invention the effect is improved mainly by a new construction adapted to avoid the knowndetrimental cavitation, which heretofore prevented the use of siphon-turbines in an extent worth mentioning.

One mode of carrying out the present invention is illustrated by way of example on the accompanying sheet of drawings in which Fig. 1 shows a turbine in longitudinal section.

Fig. 2 is a sectional view thereof, the section being taken on line II-II of Fig. 1.

The turbine, having the shape of a unit, es-- sentially consists of a casing, which contains a rotor and can be arranged over a suitably built fall, for instance a weir or overflow 1, in such a manner, that its inlet and outlet ends are positioned below the head water level and the tail water level respectively. The casing consists of three parts, namely a cylindric inlet pipe 2, a conical suction pipe 3 and a box-shaped connecting member 4. The pipes 2 and 3 are secured at right angles to the bottom of the said connecting member, whereby the axes of the pipes are disposed ,5 parallel to one another. The part of the connecting member located between the flanges for connecting the said pipes is of rectangular cross section forming a platform. The rotor 5 is mounted on a vertical shaft 6 in the admission opening of the casing, the said shaft being enclosed in a tube 7 which tightly fits to the roof of the intermediate member. The bottom end of the tube is mounted in .a bearing 8, which is provided with webs 9, resting against the inner wall of the inlet 1 e 2. p The bottom end of the tube 7 is slightly enlarged and a stuffing box 10 is arranged in the same just behind the rotor, said box being thus always disposed below water. The

vanes of the rotor extend closely to the bot tom face of the webs 9, so thatforeign parts such as twigs,.branches or small'pieces of wood, which may have entered, are cut up. The diameter of the boss 11 of the rotor is of considerable size and,t.og'ether with the bearing member-'8 and a conical sleeve'12 secured thereto, formsa core within the inlet pipe, whereby the clear cross-sectional area of the same is enlarged from the bottom to the top and thus causes a certain amount of suction. A gearing'is arranged on the roof of the intermediate member 4 and transmits the rotation of the shaft 6 to a dynamo also mounted on' the said intermediate member.

Theentire casing is suspended by chains 13. The intermediate member is provided with a valve 14 furnished with a centrifugal gov ernor 15'c0n'nected with the shaft 6'. The pipes 2 and 3 are'securedtothe intermediate member 4 by means of flanges. .Therefore it is possibleto adapt the arrangementt o a changing tail waterlevel by exchanging the suction pipe.

It has been foundthat in a turbine of the construction described, even in case of a varying load, cavitation cannot take place within the casing, owing mainly to the arrange ment of the rotor in the'admission opening of the inlet pipe, and-further to the fact, that the rotor rests totally below the head water level and the water behind the rotor is bound to raise vertically. In View thereof the efficiency of the turbine is very good and is still further increased by the short way of the water within the casing and the reduction of all frictional resistances connected therewith. The arrangement needs to be submerged only a minimum in view of the vertical arrangement of the pipes 2 and 3.

The packing is most favorable owing to the provision of the sleeve surrounding the shaft and the arrangement of the stuffing box behind the rotor. The arrangement can be readily adapted to the varying water levels by raising or lowering the casing, as well as by exchanging the suction pipe. The number of revolutions is controlled automatically by means of the valve, which if desired reduces the siphon-action by introducing air I100 into the casing. For starting a common pump may be provided for sucking oil the air, the said pump being connected with the shaft of the turbine. The division of the easing into three parts and the most simple shape of the parts reduce the costs of manufacture and erection. The turbine can be extensively used owing to its great independence from the qualities of place of erection and the small requirements regarding fall and depth of water.

I claim 1. A siphon-turbine comprising in combination an inlet pipe, a suction pipe, a boxshaped intermediate member adapted to esteblish communication between the two pipes, and a rotor in the admission opening of the inlet pipe.

2. A siphon-turbine comprising in combination an inlet pipe, a suction pipe, at boxshaped intermediate member adapted to establish communication between the two pipes, and a rotorin the admission opening of the inlet pipe, the suction pipe being detachably secured to the floor of the intermediate member.

3. A siphon-turbine comprising in combination an inlet pipe, a suction pipe, a boxsha ed intermediate member adapted to estab ish communication between the two pipes, a rotor in the admission opening of the inlet pi e, an air-valve arranged at the roof of the intermediate member, and a centrifugal overnor connected with the Valve and the s aft of the turbine. V

In testimony whereof I have signed my name to this specification.

EDUARD SUESS.

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