660MW-grade once intermediate reheating ultra-supercritical air-cooling steam turbine unit
A 660MW, ultra-supercritical technology, applied in the direction of steam engine devices, machines/engines, mechanical equipment, etc., can solve the problems of low thermal efficiency, achieve high thermal efficiency, unique layout, and environmental protection
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specific Embodiment approach 1
[0011] Specific implementation mode one: combine Figure 1 to Figure 3 It is explained that a 660MW grade intermediate reheating ultra-supercritical air-cooled steam turbine unit described in this embodiment includes high and medium pressure cylinders 1, low pressure cylinders 2, front bearing housing 3, second bearing housing 4, third bearing housing 5, The reheater, two high-pressure main steam regulating combined valves 6 and two reheating main steam regulating combined valves 7, the high and medium pressure cylinder 1 are set at the front end of the low pressure cylinder 2, the front bearing housing 3 is set at the front end of the high and medium pressure cylinder 1, The second bearing box 4 is set between the high and medium pressure cylinder 1 and the low pressure cylinder 2, the third bearing box 5 is set at the rear end of the low pressure cylinder 2, and the high pressure main steam regulating combined valve 6 is set at the left and right sides of the high and medium ...
specific Embodiment approach 2
[0014] Specific implementation mode two: combination Figure 1 to Figure 3 Note that the front bearing box 3, the second bearing box 4 and the third bearing box 5 in this embodiment are floor bearing boxes respectively. Other compositions and connection methods are the same as those in Embodiment 1.
[0015] This design ensures that the bearing elevation will not be affected by the expansion of the cylinder body, so that the bearing has good stability.
specific Embodiment approach 3
[0016] Specific implementation mode three: combination Figure 1 to Figure 3 To illustrate, the lower ends of the high and medium pressure cylinder 1 and the low pressure cylinder 2 in this embodiment are respectively provided with a plurality of steam extraction ports. Other compositions and connection modes are the same as those in Embodiment 1 or 2.
[0017] The lower part of the cylinder is designed in this way to leave multiple steam extraction ports, and the steam extraction is used to heat the water, so that the energy can be reused. The steam extraction port adopts a large enough extraction port to ensure the flow and velocity.
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