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Moisture separation equipment, power generation equipment, and operation method of steam turbine
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A technology for separating equipment and steam turbines, applied to steam boiler components, mechanical equipment, steam boilers, etc., can solve the problems of turbine wing erosion, turbine thermal efficiency decline, etc., to increase power generation efficiency, improve thermal efficiency, and increase heat retention Effect
Active Publication Date: 2022-07-15
MITSUBISHI HEAVY IND LTD
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Therefore, if the steam discharged from the high-pressure turbine is directly introduced into the low-pressure turbine, not only the turbine blades of the low-pressure turbine may be corroded by wet steam, but the thermal efficiency of the turbine may also be reduced.
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no. 1 approach
[0061] Hereinafter, a first embodiment of a power generation facility including the moisture separation facility according to the present invention will be described.
[0062] The power generation equipment such as figure 1 The shown is equipped with a steam generator 1, a high-pressure steam turbine 2, a moisture separation heater (moisture separator) 3, a low-pressure steam turbine 4, a steam extraction pipe 5, a heat exchanger (first heat exchanger) 6, and a heater 7. The steam introduction pipe 8, the generator 9, the condenser 10, the deaerator 11, the water supply heater 12, and the drain tanks 13A, 13B, and 13C.
[0063] The steam generator 1 generates high-temperature steam by heating water with a heat source, such as a boiler or an atomic furnace, which is a fossil fuel, such as petroleum or coal. The high-temperature steam generated in the steam generator 1 is introduced into the high-pressure steam turbine 2 from the steam generator 1 through the steam piping L1. ...
no. 2 approach
[0086] Hereinafter, a second embodiment of a power generation facility including the moisture separation facility according to the present invention will be described.
[0087] The power generation facility of this embodiment is a power generation facility using geothermal heat, such as Figure 5 As shown, a moisture separator 71, a steam turbine 72, a steam extraction pipe 73, a heat exchanger 74, a heater (first heater) 75, a steam introduction pipe 76, a generator 77, a condenser 78, and a cooling tower 79 are provided. .
[0088] The steam ejected from the production well W1 of the steam generated by geothermal passes through the steam piping L21 and is introduced into the moisture separator 71 . The moisture separator 71 includes a vertical cylindrical container 71a and a steam extraction pipe 71b. The steam introduced into the moisture separator 71 separates moisture in the cylindrical container 71a. A steam extraction pipe 71b is erected on the bottom surface of the ...
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Abstract
The present invention provides a moisture separation device, a power generation device and an operation method of a steam turbine. The moisture separation equipment is provided with: a moisture separation heater (3) for separating moisture from steam; a steam extraction pipe (5) for extracting a part of the steam from the moisture separation heater (3); a heat exchanger (6) , to heat the steam by heat exchange between the steam extracted from the steam extraction pipe (5) and from the moisture separation heater (3) and the heating medium; the heater (7), to heat the heating medium; and the steam The introduction pipe (8) introduces the steam heated by the heat exchanger (6) into the low-pressure steam turbine (4) as a working fluid. The low pressure steam turbine (4) operates from steam separated from moisture in a moisture separation heater (3) and steam heated using a heat exchanger (6).
Description
technical field [0001] The present invention relates to a moisture separation apparatus for separating moisture from steam as a working fluid of a steam turbine, a power generation plant including the apparatus, and a method of operating a steam turbine. [0002] This application claims priority based on Japanese Patent Application No. 2017-245154 for which it applied in Japan on December 21, 2017, and uses the content here. Background technique [0003] In a power plant comprising a steam turbine, a high pressure turbine is driven by steam (main steam) generated in a steam generator, and a low pressure turbine is driven by steam discharged from the high pressure turbine (cycle steam) when the main steam is near saturation. The steam discharged from the high-pressure turbine is operated with respect to the high-pressure turbine to reduce the heat retention amount, whereby a part of the steam is condensed to generate moisture (wet steam). Therefore, if the steam discharged f...
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