Stator steam inlet structure of run-off type steam turbine
A steam turbine and steam inlet technology, which is applied in the field of steam turbine components, can solve the problems of increasing the rotor speed and energy waste, and achieve the effects of increasing the speed, increasing the utilization rate, and improving the energy conversion efficiency
Inactive Publication Date: 2014-08-20
ANHUI CHENGUANG HIGH WEAR RESISTANCE TECH CO LTD
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Problems solved by technology
Among them, the air intake hole and the stator exhaust hole on the stator are important parts of the steam turbine. In a general steam turbine mechanism, the stator air inlet and the stator exhaust hole have the same cross section, which makes the steam pass through the stator air inlet. Driving the rotor to rotate may cause a part of the steam to be discharged directly through the stator exhaust hole before the rotor moves, which cannot increase the rotor speed and cause energy waste
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Embodiment Construction
[0011] figure 1 Intake hole 1, exhaust hole 2, cavitation 3, steam turbine casing 4, rotor 5, stator 6.
[0012] Referring to the accompanying drawings, a stator steam inlet structure of a radial steam turbine includes a steam turbine casing, a stator and a rotor. The steam turbine casing, stator and rotor are arranged in sequence from the outside to the inside, and the passage between the steam turbine casing and the stator is for steam flow. channel, the stator is provided with a plurality of pairs of air intake holes and exhaust holes uniformly distributed around the circumference, and the outer wall of the rotor is provided with a plurality of toothed grooves evenly distributed around the circumference, and a gap is formed between the toothed grooves and the inner wall of the stator The air pocket, the air inlet hole is a conical air hole. The high-temperature and high-pressure steam generated by the boiler (or other steam generator) first enters the steam flow gap betwee...
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The invention discloses a stator steam inlet structure of a run-off type steam turbine. The stator steam inlet structure comprises a steam turbine outer shell, a stator and a rotor which are arranged from outside to inside in sequence. A channel between the steam turbine outer shell and the stator is a steam flowing channel. A plurality of pairs of air inlets and exhaust holes evenly distributed around a periphery are formed in the stator. A plurality of tooth-shaped grooves are formed in the outer wall of the rotor and are evenly distributed around a periphery. Air holes are formed between the tooth-shaped grooves and the inner wall of the stator. The shortcoming in the prior art is overcome, the air inlets of the run-off type steam turbine stator are specially designed, so that the flowing speed of steam in the air holes of the run-off type steam turbine is increased, then the production efficiency of the run-off type steam turbine is improved, and production cost is lowered.
Description
technical field [0001] The invention relates to the technical field of steam turbine components, in particular to a stator steam inlet hole structure of a radial steam turbine. Background technique [0002] The steam turbine is an external combustion rotary machine that can convert steam heat energy into mechanical work. After the steam from the boiler enters the steam turbine, it passes through a series of annular nozzles and movable blades in sequence to convert the heat energy of the steam into the mechanical energy of the rotation of the steam turbine rotor. Steam turbines are generally used as prime movers for power generation, and can also directly drive various pumps, fans, compressors and ship propellers, etc., and can also use the steam exhaust or intermediate extraction of steam turbines to meet the heating needs of production and life. Therefore, steam turbines have been widely used in marine equipment, engineering machinery, light industrial machinery, metallurgi...
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IPC IPC(8): F01D9/00
Inventor 周金友陶兆胜徐庆梁锋
Owner ANHUI CHENGUANG HIGH WEAR RESISTANCE TECH CO LTD