AT36662B

AT36662B - Method and device for balancing the axial thrust in steam or gas turbines which are used to drive reversible water and air propellers.

Info

Publication number: AT36662B
Authority: AT
Original assignee: Bbc Brown Boveri & Cie
Priority date: 1908-02-28
Filing date: 1908-02-28
Publication date: 1909-03-26

Description

  

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 durch den die Turbine durchströmenden Dampf, minus dem auf die hintere Kolbenfläche wirkenden Druck ist. In diesem Falle ist Gleichgewicht vorhanden, da die Kräfte gleich gross und entgegengesetzt gerichtet sind. 



   Das Organ m kann nun noch mechanisch oder elektrisch mit einem an sich bekannten Schubmosser derart verbunden werden, dass je nach der Stärke des auftretenden Achsial schubes mehr oder weniger Frischdampf in den Raum q eingelassen wird, sodass eine ständige Ausbalancierung stattfindet. In diesem Falle wird der kleinere   Entlastungskolben t'   ganz oder teilweise unwirksam. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Ausgleichung des Achsialschubes bei Dampf-oder Gasturbinen, welche zum Antrieb von umkehrbare Wasser-und Luftpropellern dienen, dadurch gekennzeichnet, dass bei'* Umkehrung des Propellers für Rückwärtsfahrt gleichzeitig mittels eines   Steuerorganes   einem Entlastungskolben mit entsprechend grosser Fläche Frischdampf zugeführt wird, während der Kolben bei Vorwärtsgang auf beiden Seiten unter Abdampfspannung gesetzt wird.



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 by the steam flowing through the turbine minus the pressure acting on the rear piston surface. In this case there is equilibrium, since the forces are equally large and directed in opposite directions.



   The organ m can now be mechanically or electrically connected to a known thrust mass in such a way that, depending on the strength of the axial thrust occurring, more or less live steam is let into space q, so that constant balancing takes place. In this case, the smaller relief piston t 'is completely or partially ineffective.



   PATENT CLAIMS:
1. A method for equalizing the axial thrust in steam or gas turbines which are used to drive reversible water and air propellers, characterized in that, when the propeller is reversed for reverse travel, live steam is simultaneously fed to a relief piston with a correspondingly large area by means of a control element, while the piston is placed under exhaust pressure on both sides when moving forward.

Claims

2. Device for carrying out the method according to claim 1, characterized by channels, pipes or the like (n, o, p), which fil the steam inlet chamber (s) with a chamber (q) in front of a relief piston) and the latter again with a space ( k) connect behind the relief piston.

3. Device according to claim 1 and 2, characterized in that the chamber (q) in front of the relief piston (1) can be connected to a special live steam source.

4. Device according to claims 1- characterized by a control member (m) (cock, valve, slide or the like.) Which shuts off the connecting channels (n, o, p), respectively. opens.

5. Device according to claims 1-4, characterized in that the control element (m) is adjusted electrically or mechanically by a thrust mass according to the respective axial thrust, so that live steam of higher or lower voltage flows into the chamber (q) due to throttling. EMI2.1