DE106608C

DE106608C -

Info

Publication number: DE106608C
Application number: DENDAT106608D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 14·: Dampfmaschinen.CLASS 14 ·: Steam engines.

Patentirt· im Deutschen Reiche vom g. September 1898 ab.Patented in the German Empire by g. September 1898.

Die Construction einer einfachen und dauerhaften Expansionsumsteuerung für Dampfmaschinen hat immer grofse Schwierigkeiten geboten. Man ist genöthigt gewesen, besondere mehr oder minder verwickelte Steuerungen zu erdenken, wie eine solche z. B. durch die englische Patentschrift Nr. 13774/1894 bekannt geworden ist, bei welcher der Expansionsschieber einen besonderen Antrieb erhält, derart, dafs man beim Umsteuern genötigt ist, eine Veränderung der Bewegung desselben zugleich mit der Veränderung der Bewegung des Grundschiebers vorzunehmen.The construction of a simple and permanent expansion reversal for steam engines has always presented great difficulties. It has been necessary to apply special, more or less complicated controls think up how such a z. B. known from the English patent specification No. 13774/1894 has become, in which the expansion slide receives a special drive, in such a way that one is compelled to change the direction, a change in the movement of the same to be carried out at the same time as changing the movement of the basic slide.

Die den Gegenstand des Erfindung bildende Expansionsvorrichtung ermöglicht, bei einer umsteuerbaren Maschine ebenfalls die Bewegung des Vertheilungsschiebers zu verändern, ohne die Dampfvertheilung zu verschlechtern, aber ohne beim Umsteuern ein besonderes Steuerungssystem oder eine Handhabung des Expansionsmechanismus zu benöthigen. Man kann die Vorrichtung daher bei bestehenden Steuerungen anbringen, ohne Abänderungen am eigentlichen Vertheilungsmechanismus vornehmen zu müssen.The expansion device forming the subject of the invention allows, at a reversible machine can also change the movement of the distribution slide without to worsen the steam distribution, but without a special control system when reversing or to require manipulation of the expansion mechanism. The device can therefore be used with existing ones Attach controls without making any changes to the actual distribution mechanism to have to.

Zu diesem Zweck wird zur Beherrschung des Expansionsmechanismus eine Gelenkverbindung mit dem Vertheilungsmechanismus derart hergestellt, dafs dem ersteren seine mit den Kolbenbewegungen zusammenfallende eigene Bewegung gewahrt bleibt. Unter diesen Umständen erfordert das Umsteuern natürlich keine besondere Bethätigung der Expansionsschubstange, diese braucht vielmehr nur dann verlegt zu werden, wenn man den. zwischen etwa 3 bis go pCt. wechselnden Füllungsgrad bestimmt.For this purpose, an articulated joint is used to control the expansion mechanism produced with the distribution mechanism in such a way that the former has its own which coincides with the movements of the piston Movement is preserved. Under these circumstances, of course, it is necessary to change course no special actuation of the expansion push rod, this only needs then to be relocated if you have the. between about 3 to go pCt. changing degree of filling certainly.

Fig. i, 2, 3 und 4 zeigen eine derart ausgeführte Kolbenschiebersteuerung, und zwar zeigt Fig. ι eine Seitenansicht mit Längsschnitt, Fig. 2 eine Oberansicht, Fig. 3 einen Schnitt nach a-b und c-d von Fig. 1, Fig. 4 einen Schnitt nach e-f von Fig. 1.1, 2, 3 and 4 show a piston slide control designed in this way, namely FIG. 1 shows a side view with a longitudinal section, FIG. 2 shows a top view, FIG. 3 shows a section from ab and cd of FIG. 1, FIG. 4 shows a Section after ef of FIG. 1.

Fig. 5 und 6 zeigen eine Flachschiebersteuerung, und zwar Fig. 5 eine Seitenansicht mit Schnitt und Fig. 6 einen Schnitt nach Linie g-h von Fig. 5.FIGS. 5 and 6 show a flat slide control, namely FIG. 5 a side view with a section and FIG. 6 a section along line gh of FIG. 5.

Fig. 7, 8, 9, 10 und 11 endlich zeigen schematisch verschiedene Ausführungsformen der Einrichtung.Figures 7, 8, 9, 10 and 11 finally show schematically different embodiments of the device.

Der Hebel A der Steuerung vermittelt in der bekannten Weise das Voreilen für die Einströmung.The lever A of the control mediates in the known manner the lead for the inflow.

Dieser Hebel ist mit einer Verlängerung B versehen, an die der Expansionsmechanismus mittelst des Kreuzkopfes m und der Stange Q. angeschlossen ist.This lever is provided with an extension B to which the expansion mechanism is connected by means of the cross head m and the rod Q.

Die Schwingungen des Hebels A, die den Kolbenbewegungen entsprechen, werden für die Herbeiführung der Expansionsbewegung nutzbar gemacht.The vibrations of the lever A, which correspond to the piston movements, are used to bring about the expansion movement.

Der Arm oder die Verlängerung B des Hebels A ist durch das Gelenk C mit der Schieberstange t in Verbindung und jede Aenderung in der Bewegungsumkehr bezw. jede Bewegung der Stange t hat deshalb auf die Expansion keinen Einflufs.The arm or the extension B of the lever A is through the joint C with the slide rod t in connection and each change in the reversal of movement BEZW. every movement of the rod t therefore has no effect on the expansion.

Der Arm B folgt stets den Bewegungsphasen des Kolbens, während zugleich sein Gelenktheil C der Stange t des Vertheilungsschiebers folgt. Dadurch, dafs man also die Expansiönsschieber D D¹ einander nähert oder sie von einander entfernt, giebt man gröfsere oder kleinere Füllung. Diese Näherung oder Ent-The arm B always follows the phases of movement of the piston, while at the same time its joint part C follows the rod t of the distribution slide. By bringing the expansion valves D D ¹ closer to one another or moving them away from one another, larger or smaller fillings are made. This approximation or

Claims

Distance is effected by means of the spindle F provided with right-hand thread D and left-hand thread D1 by turning it accordingly by means of wheel E, which is arranged on the square end of the spindle F and lies in front of the cross head m serving as a guide sleeve. The basic slides PP move in chucks O, which are adjustable in the slide box, and the expansion slides D D \ which are actuated by the rod F, which receives their movement from the arm B, move in these basic slides. In the embodiment for flat slide according to FIGS. 5 and 6, the arm B appears to be omitted at first glance, but in reality it is formed by the length of the lever A, which lies between the center of oscillation C and the point r of this lever, at which the Bar 2V attacks to master the expansion. In these figures, P denotes the basic slide, t the rod of the same and ν the cross head of the rod. The push rod Q. of the expansion mechanism receives its movement from the coulisse H, which is actuated by means of the pin L to which the rods N are articulated, which, as already mentioned, receive their movement from the lever A, as in the previous example swings around point C. The coulisse H swings around the fixed point n. If the machine is to work with large fillings, the push rod Q assumes the position shown in the drawing. For the small fillings, on the other hand, they are brought into the punctured position p by moving them by means of the lever u. As the schematic representations, Fig. 7, 8, 9, 10 and ι! Show, the new expansion device can be implemented by combining different organs, depending on the control system in question. For example, according to FIG. 7, which shows the application of the invention to a control essentially of the WaI-Schaert type of control, the push rod Q is actuated by the part C of the lever A, and it is illustrated in a position at which about 5 pCt. Filling takes place. Fig. 8 shows the application of the invention in a control with two eccentrics and here the push rod Q assumes a position in which about 50 pCt. Filling occurs. 9 shows the application in a control with only one eccentric and the thrust catch Q. is illustrated here in a position which corresponds to a full filling. 10 shows the arrangement in the case of a control according to the W alschaert system. In this example, the expansion movement is transmitted through an independent lever W. Fig. Ι ι shows the application for a stationary machine. In this example, the lever A has its pivot point C on the rod of the eccentric. The end χ of the lever A is connected to a link x1 swinging around a fixed point «1. The lever A transfers the movement through the push rod N to a coulisse H, which swings around the fixed point η. The expansion movement is transmitted from the coulisse H by means of the push rod Q. in the same way as in the example of FIGS Basic slide mechanism enables the stroke of the distribution slide to be changed during the course in order to achieve the desired advance for the outflow, and this is possible without interfering in the least with the expansion. The present arrangement also makes it possible, without any complication, to achieve the movement required for the expansion, to be precise in every direction of rotation of the machine. Pateνt claims:

1. Control with two sliders for reversible Steam engines, characterized in that the expansion mechanism so articulated with the distribution mechanism is that when reversing, only the control rod actuating the distribution mechanism needs to be laid without a deterioration of the steam distribution occurring, while the change occurs the degree of filling a special device is arranged.

2. embodiment of the controller according to claim i, characterized in that a or several levers in a suitable point of the mechanism for the distribution or base slide are rotatably arranged and receive a movement that corresponds to the movements of the working piston coincides with this movement due to the mechanism for expansion to transfer a suitable point, which is in front of or behind the connecting hinge on the distribution or base slide mechanism lies.

For this purpose 2 sheets of drawings.