DE25725C

DE25725C - Indirectly acting regulator for power machines

Info

Publication number: DE25725C
Application number: DENDAT25725D
Authority: DE
Original assignee: G. KNOP in Gotha

Description

^ if ^ 0 ^rmnt _t*^| ■^ if ^ 0 ^ rmnt _t * ^ | ■

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Dieser Regulator zählt zu derjenigen Klasse von Kraftmaschinen - Regulatoren, bei welcher die Bewegung der Regulatorhülse eine Verstellung des den Zuflufs der motorischen Substanz bestimmenden Abflufsorganes (Ventil, Klappe) nicht direct zur Folge hat, sondern indirect und in der Weise, dafs durch jene Bewegung die Einwirkung einer fremden, die Verstellung besorgenden Kraft zugelassen oder ausgeschlossen wird.This regulator is one of the class of prime movers - regulators in which the movement of the regulator sleeve adjusts the inflow of the motor substance determining drainage organ (valve, flap) does not result directly, but indirectly and in such a way that through that movement the action of an alien force causing the adjustment is permitted or is excluded.

Auf der Zeichnung ist die Anwendung des neuen Regulators beispielsweise für eine Turbine veranschaulicht worden. Fig. 1 zeigt denselben in einer Vorderansicht, Fig. 2 in einer Seitenansicht und Fig. 3 im Grundrifs, während Fig. 4 sich auf eine Einzelheit bezieht.The drawing shows the application of the new regulator for a turbine, for example been illustrated. Fig. 1 shows the same in a front view, Fig. 2 in a Side view and FIG. 3 in plan, while FIG. 4 relates to a detail.

Es bedeutet α diejenige Welle, welche das Abschlufsorgan des in die Turbine gelangenden Wassers,. sei jenes nun eine Drosselklappe oder eine die Leitradkanäle beeinflussende Schütze (Ringschütze, Rollschütze, Klappen u. dergl.), in Bewegung setzt. Das am oberen Ende dieser Welle α festsitzende Rad steht in Eingriff mit der Schnecke b, auf deren Welle einerseits ein Kegelrad c, andererseits ein Handrad d aufgekeilt ist. Die Welle e des in c eingreifenden Kegelrades trägt am anderen Ende ein Keilrad/und endigt in eine Schraubenspindel £■. Das Keilrad f wird während der regulirenden Thätigkeit des Apparates von dem doppelseitigen Reibungskegel /' bewegt. Dieser sitzt fest auf einem Zapfen /², welcher im äufseren Ende eines frei drehbar auf der Welle e gelagerten Hebels h lose angeordnet ist. Der Kopf des Zapfens /², Fig. 3, trägt einen nach der Schwingungsebene des Regulatorhebels k zu gekröpften Hebel f³, und hierdurch steht der Reibungskegel f¹ im Zusammenhange mit einer senkrecht geführten Stange eines Excenters /2', welches auf der von der Transmission aus bewegten Welle Ä³ sitzt und den Hebel h in schwingende Bewegung setzt. Von derselben Welle aus wird auch ein Regulator R mittelst Kegelräder in Umdrehung versetzt.It means α the wave which is the closing element of the water entering the turbine. be that a throttle valve or a contactor influencing the stator ducts (ring contactors, roller contactors, flaps, etc.), is set in motion. The wheel fixed at the upper end of this shaft α is in engagement with the worm b, on the shaft of which a bevel gear c on the one hand and a handwheel d on the other hand is keyed. The shaft e of the bevel gear engaging in c carries a bevel gear at the other end and ends in a screw spindle £ ■. The wedge wheel f is moved by the double-sided friction cone / 'during the regulating operation of the apparatus. This sits firmly on a pin / ² , which is loosely arranged in the outer end of a lever h freely rotatably mounted on the shaft e. The head of the pin / ² , Fig. 3, carries a lever f ³ cranked to the oscillation plane of the regulator lever k , and as a result, the friction cone f ¹ is related to a vertically guided rod of an eccentric / 2 ', which is on the of the Transmission from moving shaft Ä ³ sits and sets the lever h in oscillating motion. A regulator R is also set in rotation by means of bevel gears from the same shaft.

Der mit Gegengewicht i ausbalancirte Reibungskegel f¹ greift so weit in die Keilnuth des Rades f ein, dafs bei Normalstellung (welche die Figuren der Zeichnung voraussetzen) eine gegenseitige Berührung nicht stattfindet, so dafs der Kegel f^x bei seiner Auf- und Abwärtsschwingung immer radial zur Wellenachse e gerichtet bleibt und eine Beeinflussung des Keilrades / ausgeschlossen ist, d. h. dieses in Ruhe verharrt.The friction cone f ¹ , balanced with counterweight i , engages so far into the keyway of the wheel f that in normal position (which the figures in the drawing assume) there is no mutual contact, so that the cone f ^x always radially during its upward and downward oscillation remains directed to the shaft axis e and an influence on the bevel wheel / is excluded, ie it remains at rest.

Wächst nun aber der von der Turbine zu überwindende Widerstand, fällt also mit abnehmender Geschwindigkeit der Transmission der Regulator, so bewegt der Regulatorhebel k die Stange k^l aufwärts und diese nimmt den gekröpften Hebel f^z mit. Letzterer dreht den Reibungskegel f^l in eine von der normalen Lage nach oben abweichende (I in Fig. 4); die untere Kante des Kegels f¹ berührt die Keilfläche des Rades f und nimmt dieses bei jeder Schwingung abwärts in Richtung des Pfeiles 1 mit. Diese Bewegung wirkt direct auf die zum Turbinenschützen führende Welle α ein und bedingt eine Vermehrung des Wasserzulaufes so lange, bis die normale Geschwindigkeit wieder hergestellt ist; dann nämlich kehrt mit dem Wiederaufsteigen des Regulators derBut the growing from the turbine to overcome resistance falls with decreasing speed of the transmission of the regulator, the regulator lever is moved the rod k k ^l up and this takes the cranked lever with f ^z. The latter rotates the friction cone f ^l into a position deviating upwards from the normal position (I in FIG. 4); the lower edge of the cone f ¹ touches the wedge surface of the wheel f and takes it down with each oscillation in the direction of the arrow 1. This movement acts directly on the wave α leading to the turbine gunner and causes an increase in the water supply until normal speed is restored; then with the re-ascent of the regulator the

Claims

Friction cone f ¹ from the upper position I back into its middle.

The opposite is the case with a reduction in the resistance to be overcome by the turbine: The resulting rise of the regulator sleeve causes the rod k ^ to sink and the friction cone f ¹ to rotate downward (position II, FIG. 4). Then every upward oscillation of the lever h causes an intermittent rotation of the wheel / in the direction of arrow 2. However, this movement causes a reduction in the quantity of water flowing into the turbine.

As a precautionary measure to ensure that the regulating action of the switching mechanism does not exceed certain external limits, the following device has been taken: On the screw spindle g at the end of the shaft e sits a nut g ¹ , which is gripped by the fork of a lever / and by its Screwing back or forth on g during the regulation activity of the switching mechanism moves this lever / around its pivot at P. Assuming now that the regulator does not return to its central position even after the turbine gate is fully open, i.e. remains in the lowest position, the nut g ¹ moves in the direction of arrow 1, Fig. 2, and the lever / pushes with its lower one End against the stop η of the (in the case indicated) above rod k ^l and thus forcibly puts the regulator in its middle position; as soon as this has taken place (or a short time beforehand), the regulating movement of the switching mechanism ceases. If this caution were not needed, a further regulating activity would continually strive to turn the wave e further, for example if wave α ζ. B. acts directly on a throttle valve, tending to close it again, or, if the latter is made impossible, causing the rupture of any part. In the opposite case, where for whatever reason the transmission and the turbine continue to run in spite of the completely closed guards, e.g. B. in systems whose main shaft is driven simultaneously by a turbine and another engine, the nut g ¹ moves in the direction of arrow 2 and by means of lever / and stop m presses the regulator in turn forcibly into its central position.

The handle o, Fig. 1, which is related to a rod having the wedge pieces pp , enables the same purpose to be achieved by hand. When pulling this handle forward, namely get the wedge pieces // between the stops qr attached to the lower end of the rod k ^x , this rod and the regulator in their resp. Middle positions pressing.

By means of the mentioned handwheel d , independently of the regulator, an adjustment of the closing element for the water entering the turbine can be achieved.

If the forces required for the adjustment are very large, the action of the wave e on the shooter is made indirect, that is, when combined with the wave e, a special transmitter is used. B. the rotary movement of this shaft to adjust a belt fork, which shifts a belt from a loose pulley either in one or the other direction, or the rotary movement of this shaft is used to switch friction clutches on and off and the like Mechanisms for mutual)! Adjustment of the closing organ. Finally it should be mentioned that it is not necessary that the friction wheel be provided with a wedge-shaped groove; instead, conversely, a wedge-shaped projection, even a cylindrical surface, and matching friction cones acting in opposite directions can be used.

Patenτ claim:

An indirectly acting regulator, the setting tool of which acts on a friction cone f ^l , which is rotatably mounted in a lever h set in oscillating motion from the transmission, in such a way that the mentioned cone / 'at normal speed acts directly or indirectly as the closing organ of the Friction wheel influencing motor substance / left in its rest position, but at greater or lesser than normal speed it rotates in one direction or the other by means of friction.

For this purpose 2 sheets of drawings.