MECHANISM FOR THE ADJUSTMENT OF THE OFFNUNG OF THE CONTROL DEVICE OF A TURBINE

The invention concerns a mechanism for the adjustment of the opening of the control device of a turbine by means of an electrical automatic controller, which is sensitive to the operating load changes of the turbine, comprehensively a hydraulic servo actuator for the adjustment of the idler, which stands with the source of a liquid under constant pressure over a Zutellschieber in connection, which is steered by an auxiliary slide valve, which is steered by the electrical automatic controller, whereby the mentioned mechanism covers on the other hand a mechanical pilot relay with Schwengel and slidegate valve, which serve the opening of the control device for the delimitation by modulation of the effusion from the hydraulic control circuit of the slide valve distributor. With such mechanisms the electrical automatic controller information receives from the turbine in l0 dependence of the present/immediate speed and the acceleration of the turbine and transfers to the Hllfsventil an instruction for the opening or locking of the control device of the turbine, depending on whether the speed and/or the acceleration of the latters smaller or rougher is than a desired value. This instruction a slide valve distributor by modulation of a changeable hydraulic pressure for the controlling of the Zuteflschiebers conveyed, which is connected to a hydraulic with source of constant is pressure, by which it is modulated the effusion quantity toward a servo actuator, at which the idler is coupled. The opening of the control device is limited on the other hand by a mechanical delimitation device with Schwengel, which is subordinated to the position of the idler. It was however stated that the employment of the before-well-known opening limiters permitted to obtain if necessary no z0 present/immediate delimitation of the opening of the control device. In order to work against this lack, is characterized the mechanism the according to invention by that it exhibits a device for present/immediate delimitation the opening of the turbine control device, which a bolt, which penetrates enclosure is arranged in the axle of the valve spool, in which a bar of the seeing whom gel, and whose Verldemmung on the mentioned bar is steered outgoing from a Elektroventfl and which permits present/immediate manipulation of the slidegate valve to the mechanical pilot relay. The designs show schematically and exemplarily the adjustment mechanism according to invention. In it show: Fig.1 a schematic total view, Fig.2 a Teüansicht in the axial section of a preferential execution form of the mechanical pilot relay. In Fig. 1 represented mechanism covers an electrical automatic controller --1--, that on the one hand with a not represented turbine and on the other hand with an auxiliary slide valve --2-- is electrically connected. The latter is over a line --3-- with a source --PC-- connected by oil which is at constant pressure. The Hllfsventi! --2--, that the pressure of the line --3-- due oil in function of the 3s of the automatic controller --1-- if instructions conveyed modulated, is over a line --4-- with the operating final part of the slidegate valve --5-- a Zutei [slidegate valve --6-- connected. The latter is over a line --7-- with the source --PC-- of oil under constant pressure and over a line --8-- connected with a not represented servo actuator, with which the idler --CV-- the turbine is coupled. Thus an adjustment of the opening of the turbine control device is obtained, only of by the electrical automatic controller --1-- conveyed instructions is dependent, whereby the partial or total locking of the control device by successive placing of the line --4-- (on the auxiliary valve --2--) and the line --8-- (on the slide valve distributor --6--) on leaking out --E-- one obtains. The mechanism covers on the other hand a mechanical pilot relay with Schwengel --9--, its bar --10-- into the extension --5a-- axially, those penetrates the end, where the line --4-- into the slidegate valve 4s --5-- the Zutellschiebers --6-- flows, is opposite. If this bar --10-- into the extension --5a-- the slidegate valve --5-- penetrates, then it operates a slidegate valve--11-- the mechanical pilot relay, that in the extension --5a-- the slidegate valve --5-- slides. The penetration depth of the bar --10-- in the extension --5a-- the slidegate valve --5-- hangs on the one hand of the attitude by an engine --Decay a manually operated button --25-- and the situation of an attack --12-- for the one so the end of the Schwengels --9-- and on the other hand of the opening of the turbine control device, a cam --13-- in such a manner in turn it carries forward that the other end of the Schwengels --9-- in dependence of the mentioned opening of the control device one adjusts, off. It becomes thus possible, by a suitable attitude of the attack --12-- for an end of the Schwengels -9--, by means of the manually operated button --2S-- or by means of the engine to limit the opening of the turbine control device independently from the instructions which are due to the automatic controller to. The bar --I0-- the Schwengels --9-- operated thus the slidegate valve --11-- the mechanical pilot relay and s places one of the line --4-- branched line --15-- on leaking out in priority printing modulation, as soon as the cam --13-- the other end of the Schwengels toward to the maximum, of the attack --12-- certified opening of the control device operates. All details of the described mechanism are already well-known. The available mechanism differs from before-well-known thereby that it furthermore for the present/immediate delimitation a device serving exhibit I0 of the opening of the turbine control device, which the bar --10-- the Schwengels --9-- with a pair of clamping jaws --16-- positively and the present/immediate manipulation of the slidegate valve connects --1i-- from the mechanical pilot relay permits. The clamping procedure of these cheeks --15-- becomes from an electrical valve --17-- outgoing steered, that over a line --18-- with a source --PC-- of oil under constant pressure and over a line --19-- with the clamping jaws --16-- is connected. The Fig. a Teflansicht shows 2 in the axial section of a preferential execution form with the clamping jaws in increased yardstick --16-- equipped pilot relays. The line --15-- penetrates axially to the slidegate valve --11-- , a diverting channel --20-- exhibits, and which in a feather/spring --22-- Irish Republican Army distance from a flash groove --21-- one holds. In this position the Klerambacken comes --16-- semicircular form against the plug screw --23-- the extension --ba-- the slidegate valve --5-- for the attack and serve for their part as attack at the upper end of the slidegate valve --11--. If the Elektroventfl --17-- one operates, then the enular groove becomes --24-- the clamping jaw --16-- over the line --19-- with oil of constant pressure supplies. Thus the clamping jaws with the bar become --10-- the Schwengels --9-- positively connected, so that the additional opening of the 2s of control device following turn of the cam --13-- the line --15-- presently/immediately on leaking out and the opening of the control device sets befehlsweise to the value limited, which with the manipulation of the electrical valve --17-- one reached. Of course can by the drive of the engine --MI-- toward for the advance of the attack --12--, the opening of the control device to be still reduced. Numerous modifications of the descriptive mechanism are conceivable. So the latter would know the slide valve distributor in case of, with which one would use a mechanical automatic controller, e.g. in the kind of a Beschleunigungstachymeters, --6-- directly steer and the Elcktroventil --2-- are omitted. In place of the clamping jaws --16-- it would be possible furthermore, in the extension --ba-- the slidegate valve under the pressure of the line --19-- due oil, ductile case