METHOD FOR BALANCING THRUST, TURBINE AND TURBINE ENGINE
First Claim
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1. A method for balancing thrust in a turbine provided with a rotatable rotor, the method comprising:
- providing a first pressure source outside of said turbine;
providing a pressure chamber inside of said turbine, wherein a wall of said pressure chamber acts on said rotor so that to balance thrust exerted by said rotor when it rotates;
connecting said first pressure source to said pressure chamber via a first conduit; and
associating a first valve to said first conduit, said first valve being arranged to open and close said first conduit,wherein said first valve is arranged to open automatically when the pressure upstream of said first valve exceeds a first predetermined threshold value.
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Abstract
A turbine comprising a rotatable rotor and a pressure chamber; a wall of the pressure chamber is arranged to act on the rotor so that to balance thrust exerted by the rotor when it rotates; a conduit connects the pressure chamber and arranged to a pressure source; a valve associated to the conduit may open and close the conduit; the valve is arranged to open automatically when the pressure upstream of the valve exceeds a first predetermined threshold value; in this way, when the load of the turbine is high excessive thrust is balanced because of the higher pressure in the pressure chamber.
16 Citations
20 Claims
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1. A method for balancing thrust in a turbine provided with a rotatable rotor, the method comprising:
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providing a first pressure source outside of said turbine; providing a pressure chamber inside of said turbine, wherein a wall of said pressure chamber acts on said rotor so that to balance thrust exerted by said rotor when it rotates; connecting said first pressure source to said pressure chamber via a first conduit; and associating a first valve to said first conduit, said first valve being arranged to open and close said first conduit, wherein said first valve is arranged to open automatically when the pressure upstream of said first valve exceeds a first predetermined threshold value. - View Dependent Claims (2, 3, 4, 5, 14, 15, 16)
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6. A turbine comprising:
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a rotatable rotor; a pressure chamber, wherein a wall of said pressure chamber is arranged to act on said rotor to balance thrust exerted by said rotor when it rotates; a first conduit connected to said pressure chamber and arranged to be connected to a first pressure source; and a first valve associated to said first conduit and arranged to open and close said first conduit, wherein said first valve is arranged to open automatically when the pressure upstream of said first valve exceeds a first predetermined threshold value. - View Dependent Claims (7, 8, 9, 10, 11, 17, 18, 19, 20)
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12. A turbine engine comprising:
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a cascade connection of a compressor; and a turbine downstream of said compressor, wherein said turbine comprises; a rotatable rotor; a pressure chamber, wherein a wall of said pressure chamber is arranged to act on said rotor to balance thrust exerted by said rotor when it rotates; a first conduit connected to said pressure chamber and arranged to be connected to a first pressure source; and a first valve associated to said first conduit and arranged to open and close said first conduit, wherein said first valve is arranged to open automatically when the pressure upstream of said first valve exceeds a first predetermined threshold value, wherein said compressor is used as a pressure source for balancing thrust in said turbine. - View Dependent Claims (13)
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Specification