US1285333A - Reversible steam-turbine. - Google Patents

Description

S. A. H. NOEL.

REVERSiBLE STEAM TURBINE. APPLICATION FILED MAY 3. 1918.

Patented Nov. 19, 1918.

SIDNEY A. atom, or PENARTH, ENGLAND.

, REVERSIBLE STEAM-TURBINE.

I Specification of Iietters Patent.

Patented Nov. is, 1918.

Application filed. lli'ay3, 1918. Serial J. To. 232,251.

To all whom z't-may concern: Be it known that I, SIDNEY AUGUSTUS HUGI-INOEL, SIlbj6Ct of the King of Great Britain, residing at No. 24: Archer road, Penarth, in the county of -Glamorgan, Eng land, have invented a new and useful Improved Reversible Steam-Turbine, of which the following is a specification. This invention relates to an improved construction of reversible steam turbine of the typein which there is, in the stator, a succession of closely spaced steanipassages through which steamis directed with a tangential velocity-component to impinge on the sides of a succession of closely spaced apertures in a rotor through which it flows to the exhaust passage.

steam passages to and through the stator are so directed and valve commanded that, for either direction of rotation, the tangential impulse is delivered in such a manner as to be uniformly distributed throughout the circumference of the stator.

Also the steam from the stator so impinges on the rotor that the tangential impulse therefrom is uniformly distributed throughout the circumference of the rotor.

The accompanying drawing shows a suitable form of construction embodying the above described invention:

In this drawing Figure 1 is a transverse sectional elevation of the motor, taken along the line 11 of Figs. 3 and 5.

Fig. 2 is a transverse section taken along the line 22 of Figs. 3 and 5.

Fig. 3 is a longitudinal sectional elevation taken through the axis of the rotor shaft, and

Fig. 4 is an end elevation of the motor.

Fig. 5 is a plan of the valve chest with the cover removed.

In these figures, A is the rotor which is keyed to a shaft B and surrounded by a stator which for convenience is constructed in two parts C and D.

The steam is conducted to a steam-chest G from which its escape to the portions C of the stator is commanded by a slide valve H, the portion D of the stator receiving steam from the same valve-chest G through a slide valve 1.

The portion C of the stator has in the right-hand half of its circumference (see 1) a plurality of equally spaced passages-c so inclined as to direct the steam passing through them to the inclosed rotor A with a whirl in a clockwise direction, there being in the left-hand halfof the circumference ofiC a plurality of passages c so inclined as to direct the steam passing through them to'the rotor A with a whirl in an anti-clockwise direction. The annular space '0 through which thesteam flows on its-way tothe passages 0 or 0 is divided intotwo parts by abutments c 0 The portion D of the stator has, as shown in Fig- 2, in the righthand half of its circumference passages al so inclined as to direct the steam passing through them to the rotor- A with a-whirlin an anti-clockwise According to the present inventlon the -direction, there being in the left-hand half of the circumference D passages d so inclined as to direct the steam passing through them to the rotor A with a whirl in a clockwise direction. The annular space at through which the steam flows on its way to the passages d or d is divided into two parts by abutments d 61*.

The rotor A is formed with a plurality of equally spaced apertures a throughout its entire circumference, the sides of the aper-' tures being so inclined that the steam delivered from the passages in the surrounding stator impinges nearly normal thereto. The steam, after entering the interior of the rotor, is exhausted therefrom through eduction passages e a formed in the casing. The steam which enters the right-hand side of the rotor A, as viewed in Fig. 3, passes to the left-hand side through apertures a and so finds its wav to the eduction passages e e.

The side-valve H is so constructed that, when it is displaced to the left-hand end of its travel, it opens a way for steam from the steamchest G to the passages 0 in the portion C of the stator, the way to the passages 0 being at the same time closed. With respect to the valve I, when it is displaced to the right end of its travel. steam will be admitted to the passages 03 of the stator D and the way to the passages 03 will be closed. If therefore the valve H is displaced to the left and the valve I is displaced to the right the portion C of the stator and also the portion D will deliver steam to the rotor with a whirl in a clockwise direction. Accordingly steam will be so directed that a clockwise tangential impulse will be exerted in such a manner as to be uniformly distributed throughout the circumference of the stator.

If, in order to reverse the direction of rotation, the valve H is displaced to the right and the valve I simultaneously displaced to the left, a tangential impulse Will be uniformly distributed throughout the circuhr ference of the stator and exerted in an anticlockwise direction.

Arlso for either direction of rotation, the tangential impulse exerted on the rotor ill be uniformly distributed throughout the entire circumference. r

Both valves are simultaneously displaced to deliver the steam With either a clockwise or anti-clockwise Whirl by means of a double ended lever h i the arm h of which actu'ates the vah'e H and the arm i-the valve I as indicated in Fig. 5. The lever in 2' is secured to a spindle which is pivotally mounted in a stufling box formed in'the cover 9 of the steam chest. o v

A plurality of such turbines may be so inter-connected that the steam is passed suc- .Copies of this patent may be obtained for oessively through the series and the entire expansive energy of the steam thereby utilized.

I claim:

A turbine comprising a stator including an inner casing and an outer casing spaced from the inner casing to provide a chamber, said innercasing being formed With four series of passages, abutments dividing said chamber into tWo compartments and said series of passages into two pairs, the passages of one series of each pair being inclined opposite to the passages ofthe adjacent series, a rotor Within saidlinner casing and formedwith regularly spaced apertures, a chest communicating with said chamber, a pair of sliding valves in said chest for controlling the passage of fluid to one compartment or the other of said chamber, an oscillatory shaft journaled in said chest, and means for operatively connecting said valves and shaft. t

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

- S. A. H. NOEL.

five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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