US794898A - Steam or gas turbine. - Google Patents

Description

PATENTED JULY 18 J. STUMPF.

STEAM OR GAS TURBINE.

APPLICATION FILED SEP TI 8. 1903.

lnvenbor": ohann Stu 67g Witnesses.-

UNITED STATES Patented July 18, 1995.

PATENT OFFICE.

GENERAL ELECTRIC C ()MPA.NY, A UORPQRATION OF NEW YORK.

SQVTEAM on ens TURBINE.

SPECIFICATION forming part of Letters Patent No. 794,898, dated July 18, 1905. Application filed September 8,1903. Serial No. 172,244.

To all whom it may concern:

Be it known that I, J OHANN STUMPF, a subject of the King of Prussia, German Emperor, and a resident of 27 Rankestrasse, Gharlottenburg, near Berlin, Kingdom of Prussia, Ger.- man Empire, have invented certain new and useful Improvements in Steam or Gas Turbines, of which the following is an exact specification.

My invention relates to improvements in steam or gas turbines, and more especially to a device for regulating the steam admission of the same; and it has for purpose to provide a device by means of which it is attained that the steam admission can be regulated by means of a centrifugal pump coupled to the turbine. I attain this purpose by the construction illustrated in the accompanying drawings, in which.-

Figure 1 shows the turbine provided with my new device, partly in section and partly in diagrammatic view. Fig. 2 shows a modification of part of the device shown in Fig. 1. Fig. 3 is a sectional detail view showing a nozzle for admitting motive fluid to the wheelbuckets. Fig. 4 shows a similar construction, wherein the nozzles are arranged ingroups.

The construction forming the object of the present invention is based upon the fact that in the casing of the centrifugal pump a pressure arises which varies according to the velocity of the impeller. This pressure, which occurs chiefly at the circumference of the impeller, is used, according to the present invention, for regulating the steam admission by moving, by means of this pressure, a piston or the like, which in the well-known manner successively cuts out or inserts single steam-admission nozzles or groups of the same.

In the examples shown in the is the turbine proper. I: is the turbine.

c is the impeller of a centrifugal pump. (I is the casingof this pump.

represents the nozzles for the steam admission to the turbine-wheel. The nozzles c are-connected, by means of steam-conduits f, with the cylinder 7. It will be seen from the drawings that the ends otthc steam-conduit fdrawings, a shaft of this are situated in the cylinder g at different heights.

bis a piston situated in the cylinder 9, by means of which piston the steam-conduits f can be opened and closed. Above the cylinder g a second cylinder 2 is arranged, in which a piston in is situated. The pistons k and It are connected to each other by the piston-rod Z. To the cylinder '2? springs or are fixed, which connect the cylinder with the cross-bar m, fixed to the piston-rod Z. The springs in tend to draw the piston-rod, with the two pistons in and h fixed to the same, upward. The cylinder 11 is connected, by means of a pipe n, with the casing (Z of the centrifugal pump. The lower part of the cylinder 1' is connected, by means of apipe n, to a reservoir of. This reservoir 71/ is connected, by means of a pipe of, to the casing (Z of the centrifugal pump. it willthus be seen that the fluid is caused td move in cycle by virtue of the rotation of the impeller and the parts connected therewith.

The etfect of the device is as follows: The pump-casing, as well as the upper part of the cylinder 1', is filled with a liquidi0! instance, with oil. According to the velocity with which the turbine-wheel and the impeller c, coupled with the same, rotate a-lower or higher pressure will prevail in the casing 11. This pressure will act upon the piston l, so that the position of this piston will be changed by the number of revolutions of the turbine being changed. By the position of the piston .i' being changed the position of the piston 11. will also be changed, and it is hereby attained that as soon as the number of revolutions of the turbine are increased the piston It is pressed downward, and thereby closesone or, several steam-conduits f, so that the steam admission is diminished and the number of revolutions of the turbine reduced. The steam enters the cylinder r through the pipe 1'. The oil which is pressed throughv between the piston land the cylinder i flows through the pipe n into the reservoir w and can flow back from there through the pipeyf to the centrifugal pump.

7 It will be understood that the device for closing the steam-coi'iduits by the movement of the piston k maybe constructed in any con-- venient manneras, for'instance, in Fig. 2 a

construction is shown in which a cylinder 1s provided, the bottom 0" of which'is' stepformed- Each step is provided with one. or

Several openings, to which the steam-conduits f (shown in Fig. 1) are connected. The openings are closed by means of valves 19, the valve-rods-of which are provided with stops 4;, situated at different heights. (1 is a disk to say, if the number of revolutions ofthe' turbine inereases'the piston is and the'dis'k 9, connected to the same, are'pressed downward against the effect of the spiral springs m. By the disk q being pressed downward the several openings in the bottom 0 will gradually be closech'thereby closing the steam-.

conduits f and diminishing the steam admis sion,

In Fig .q3,- .'e' represents the nozzle-plate, containing the nozzle'orifices or passages e,

;wh-ich may be of any suitable construction.

' Motiveirifluid is supplied to these nozzles from aifluid 'eontaining chest 0 which in turn is connected by the pipes f with the cylinder g.

1* represents a row of buckets adjacent to the discharge ends of the nozzles, and r a row of buckets receiving motivefluid from the buckets 1. As many rows of these buckets are providedas areneces sary to abstract the energy tram the motive fluid. They may all rotate, or some may be stationary and others rotary. Fig. 4 a-similar construction is shown, except that the nozzles are arranged in groups, so that as'ingle pipe f supplies fluid to two or more nozzle-passages.

1 Having thus {fully described the nature of this'in'vention, what I desire to secure by Letters Patent of the United States is- 1. Irra steam or gas turbine, the combination of the turbine proper with several steameonduits, a centrifugal" liquid'pump coupled to the turbine, a cylinder connected to the liquid-pump, .a piston situated within the cylinder and acted upon by the fluid from the pumpand means for closing the steam-conduits successively by the .Inovement'oi' said piston. 2. Ina steam or gas. turbine regulator, the combination of a turbine having a plurality of steam-conduits, a pump actuated by said turbine, and means actuated by the pressure from the pump for controlling said plurality of steam-conduits successively.

3. In asteam or gas turbine regulator, the

'combinationof a turbine, a plurality of steameonduits for said turbine, a pump actuated by said turbine, means .i'or controlling sald con du'its,and means for communicating the pres sure of the pump-casing to saidcontrolling means for movinglt I r 4:. In a regulator for steam or gas turbines, the combinatlonof a steam-turbineea plurality of steam-admission conduits therefor, a centrifugal pump actuated by said turbine, a cylinder 1n direct communication with the pumpcasing and means actuated by the pressure in said cylinder for controlling the flow of steam to said conduits.

5. In a regulator for steam or gas turbines,

the combination of a turbine, steam-admission conduits for said turbine, a pump actuated by the combination of a turbine, a plurality of steam-ad mission conduits for said turbine, a plurality of valves for controlling said conduits, and means for controlling said valves successively. M f

7. In a regulator for steam or gas turbines, the combination of a turbine, a plurality of steam-admission conduits for said turbine, a valve-casing, a plurality of valves in said casing for controlling said conduits successively, and a pressure-actuated device forcontrolling said valves. I

8. In a regulating device for motors and engines, thecombination with a rotary part driven by the motor or engine, afluid subjected to pressure and caused to move in cycle by virtue of the rotation of said part, separate conduits for conveying motive fluid to the rotary part, and means for causing sald fluid.

under pressure to change the quantity of the driving medium passing to and into the motor or engine by changing. the number'o'f conduits in service. I I

9. Inaregulating device for motors and engines, the combination with a rotary part driven by the motor or engine, a liquidsubjected to pressure and caused to move in cycle by virtue of the rotation of said part, separate conduits for conveying motive fluid to the rotary part, means for changing the quantity of the driving medium passing to and into the motor or engine bysuccessivelycutting the conduits into and out of the service,

.and means for causing said liquid under pressure to operatesaid first-mentioned means.

10. In a regulating device for motors and en gines, the combination with a rotary part driven by the motor or engine, a liquid subjected to pressure by virtueoi therotation of said part, a plurality of individualconduits for conveying motive fluid to the rotary part;

means for changing the quantityof the driv ing medlum passing to and into, the motor or engine by cutting. the conduits into and out of service successively, and means for causing said liquid under pressure first to operate said first-mentioned means and then to return to the said rotary part. b v

'reeeee 11. In a regulating device for motors and en-v 'gines,-- the combination With a rotarypart driven by the motor or engine, a liquid sub jeoted to'pressure and caused to movein cycle 1 by virtue of the rotation of said part, a, pinrality of individual conduits for conveying motive fluid to the rotary part, means .for changing the quantity of the driving medium I passing to and into the motor or engine by cutting theconduits into and out of servicesuccessively, means for causing said liquid under pressure to operate said first-mentioned means, and a pipe for leadingthe liquid under pressure to the means mentioned in the seccom prising separate eond nits which are opened and ciosed successively for ohenging' the quentity of the driving medium passing to into the motor or engine, and meansiox ing said piston to operate said first-mentioned means. i

13. win zi governing mechanism for eiastie fluid turbines, the comhinetion of a pumpdriven by the tur' ine for creating a fluidpressure independent of the motive fluid, the amount of which is dependent upon the speed of the turbine, with a regulator for varying the admission of motive fluid to the turbines by cutting; no'a'zies into and out of service which is actuated dir y by the fluid from the pump and moves i fee as the pressure of the fluid from the pump rises or falls. l n testimony whereof eve signed name to this specification in the presence of two subscribing Witnesses,

ai'QihhNN STUMPF.

Witnesses:

lTlENRY Kinsmen W oLnnMAn Hanre.

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