Axial Rotary Machinery
A rotating machinery, axial flow technology, applied in mechanical equipment, engine manufacturing, engine components, etc., can solve problems such as the decline of steam turbine efficiency, achieve the effect of improving efficiency and suppressing secondary flow loss
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no. 1 approach ”
[0071] Regarding the first embodiment of the axial flow rotating machine of the present invention, refer to Figure 1 ~ Figure 4 Be explained.
[0072] The axial flow rotating machine of the first embodiment is a steam turbine. Such as figure 1 As shown, this steam turbine includes a rotor 20 rotating around an axis Ar, a steam turbine casing 10 covering the outer peripheral side of the rotor 20 , and a plurality of vane rows 41 fixed to the steam turbine casing 10 . It should be noted that, hereinafter, the direction in which the axis Ar extends is referred to as the axial direction Da, the circumferential direction centered on the axis Ar is simply referred to as the circumferential direction Dc, and the direction perpendicular to the axis Ar is referred to as the radial direction Dr. In addition, in the radial direction Dr, the side closer to the axis Ar is referred to as the radially inner side Dri, and the opposite side is referred to as the radially outer side Dro.
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no. 2 approach ”
[0116] Regarding the second embodiment of the axial flow rotating machine of the present invention, refer to Figure 5 Be explained.
[0117] The axial flow rotating machine of this embodiment is also a steam turbine as in the first embodiment. In the steam turbine of the present embodiment, the angle of the inclined surface 54 of the steam turbine of the first embodiment is changed, and other configurations are basically the same as those of the steam turbine of the first embodiment.
[0118] The downstream side end surface 52a of the inner shroud 44a of this embodiment also includes a parallel surface 53a substantially parallel to the downstream side groove side surface 25 and an inclination inclined relative to the downstream side groove side surface 25 similarly to the downstream side end surface 52 of the first embodiment. Face 54a. The parallel surface 53a forms the surface of the radial outer side Dro in the downstream side end surface 52a. The inclined surface 54a i...
no. 3 approach ”
[0127] Regarding the third embodiment of the axial flow rotating machine of the present invention, refer to Figure 6 Be explained.
[0128] The axial flow rotating machine of this embodiment is a steam turbine similarly to the above embodiments. In the steam turbine of the present embodiment, the position of the inclined surface 54 of the steam turbine of the first embodiment is changed, and other configurations are basically the same as those of the steam turbine of the first embodiment.
[0129] The downstream side end surface 52b of the inner shroud 44b of this embodiment also includes a parallel surface 53b substantially parallel to the downstream side groove side surface 25 and an inclined surface with respect to the downstream side groove side surface 25, similarly to the downstream side end surface 52 of the first embodiment. Inclined surface 54b. The parallel surface 53b of this embodiment is different from the above-mentioned each embodiment, and it forms the surfa...
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