gas turbine

Abstract

The objective is to provide a gas turbine that simplifies assembly. [Solution] The gas turbine comprises a generator including a generator shaft, a rotor that rotates integrally with the generator shaft, and a stator located around the rotor; a rotor blade, a rotating shaft connected to rotate integrally with the rotor blade, the rotating shaft connected at one end to one end of the generator shaft to transmit rotational force; a first bearing that rotatably supports a portion of the rotating shaft located opposite to the one end of the rotating shaft with respect to the rotor blade; and a second bearing that rotatably supports a portion of the generator shaft located opposite to the one end of the generator shaft with respect to the rotor.

Claims

1. A generator comprising a cylindrical generator shaft, a rotor that rotates integrally with the generator shaft, and a stator located around the rotor, Low-pressure side compressor and A high-pressure compressor located downstream of the low-pressure compressor, High-pressure side turbine, A low-pressure side turbine located downstream of the high-pressure side turbine, A cylindrical high-pressure shaft that connects the high-pressure side compressor and the high-pressure side turbine so as to rotate together, the high-pressure shaft being connected at one end to one end of the generator shaft to transmit rotational force, A low-pressure shaft is inserted so as to be rotatable relative to the high-pressure shaft and the generator shaft, and connects the low-pressure side compressor and the low-pressure side turbine so as to rotate together. A first bearing rotatably supports the portion of the high-pressure shaft located on the opposite side of one end of the high-pressure shaft, with reference to the high-pressure side compressor, A second bearing rotatably supports the portion of the generator shaft located on the opposite side of one end of the generator shaft from the rotor, from the radially outer side, A third bearing rotatably supports the portion of the high-pressure shaft located between the high-pressure side compressor and one end of the high-pressure shaft, A gas turbine comprising a fourth bearing that rotatably supports the portion of the generator shaft located between the rotor and one end of the generator shaft from the radially outer side.

2. A generator comprising a generator shaft, a rotor that rotates integrally with the generator shaft, and a stator located around the rotor, Rotary blades and A rotating shaft connected to the rotor blade so as to rotate integrally with it, the rotating shaft being connected at one end to one end of the generator shaft so as to transmit rotational force, A first bearing rotatably supports the portion of the rotating shaft located on the opposite side of one end of the rotating shaft, with respect to the rotor blade, A second bearing rotatably supports the portion of the generator shaft located on the opposite side of the one end of the generator shaft, with respect to the rotor, A third bearing rotatably supports the portion of the rotating shaft located between the rotor blade and one end of the rotating shaft, A fourth bearing rotatably supports the portion of the generator shaft located between the rotor and one end of the generator shaft, One of the generator shaft and the rotating shaft has a cylindrical shape. The other of the generator shaft and the rotating shaft is inserted into the cylindrical shaft mentioned above. The aforementioned shaft includes the first engaging portion on its inner circumferential surface, The other shaft includes a second engaging portion on its outer circumferential surface that engages with the first engaging portion to transmit rotational force when the other shaft is inserted into the first shaft. The fourth bearing is a gas turbine that supports the generator shaft from the radially outer side at an axial position where the first and second engaging portions engage.

3. The generator shaft includes the first engaging portion on its inner circumferential surface, The high-voltage shaft includes a second engaging portion on its outer surface that engages with the first engaging portion to transmit rotational force when the high-voltage shaft is inserted into the generator shaft. The gas turbine according to claim 1.

4. The first engaging portion includes one or more projections or grooves extending in the axial direction of one of the axes, The second engaging portion extends in the axial direction of the other shaft and includes one or more grooves or protrusions that engage with the one or more protrusions or grooves of the first engaging portion. The gas turbine according to claim 2.

5. When the first engaging portion and the second engaging portion are engaged, the axial radial gap between the first engaging portion and the second engaging portion is greater than the axial circumferential gap between the first engaging portion and the second engaging portion. The gas turbine according to claim 2.

6. An air passage through which air introduced into the gas turbine flows, A compressor located in the aforementioned air passage and for pressurizing the air flowing through the aforementioned air passage, A combustor that burns the mixture of air and fuel supplied by the compressor, A gas passage through which combustion gas discharged from the aforementioned combustor flows, The system further comprises a turbine located in the aforementioned gas flow path and rotated by the combustion gas flowing through the aforementioned gas flow path, The rotor blade is the compressor, The aforementioned rotating shaft is connected to the compressor and the turbine so as to rotate together. The turbine is located between the rotor blades and the first bearing on the rotating shaft. A gas turbine according to any one of claims 2, 4, and 5.

7. An air passage through which air introduced into the gas turbine flows, A low-pressure side compressor located in the aforementioned air passage and pressurizing the air flowing through the aforementioned air passage, A high-pressure compressor located downstream of the low-pressure compressor in the aforementioned air passage and pressurizing the air flowing through the air passage, A combustor that burns the mixture of air and fuel supplied by the high-pressure compressor, A gas passage through which combustion gas discharged from the aforementioned combustor flows, A high-pressure side turbine located in the aforementioned gas flow path and rotated by the combustion gas flowing through the gas flow path, A low-pressure side turbine is located downstream of the high-pressure side turbine in the gas flow path and is rotated by the combustion gas flowing through the gas flow path, A cylindrical high-pressure shaft connects the high-pressure side compressor and the high-pressure side turbine so that they rotate as a single unit, The system further comprises a low-pressure shaft that is rotatably inserted into the high-pressure shaft and connects the low-pressure side compressor and the low-pressure side turbine so as to rotate together, The rotor blade is the high-pressure side compressor or the high-pressure side turbine, The aforementioned rotating shaft is the high-pressure shaft, The generator shaft has a cylindrical shape, The high-voltage shaft and the low-voltage shaft are inserted into the generator shaft, or the generator shaft and the low-voltage shaft are inserted into the high-voltage shaft. A gas turbine according to any one of claims 2, 4, and 5.

8. The high-pressure shaft, the high-pressure side compressor, and the high-pressure side turbine are located between the low-pressure side compressor and the low-pressure side turbine in the longitudinal direction of the gas turbine. The high-pressure side turbine is located between the high-pressure side compressor and the low-pressure side turbine in the longitudinal direction. The rotor is located between the low-pressure compressor and the high-pressure compressor in the front-rear direction. The gas turbine according to claim 7.

9. A fifth bearing rotatably supports the portion of the low-pressure shaft located on the opposite side of the high-pressure side compressor and the high-pressure side turbine, with reference to the first bearing, The system further comprises a sixth bearing that rotatably supports the portion of the low-pressure shaft located on the opposite side of the rotor from the second bearing. The gas turbine according to claim 7.

Images