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Steam turbine set of power station and power generation method of steam turbine set

A technology of steam turbine unit and power station, applied in the field of solar power generation, to achieve the effect of ensuring thermal efficiency, improving thermal efficiency, and improving thermal efficiency

Pending Publication Date: 2019-10-11
SHANGHAI POWER EQUIP RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, further improvement of unit efficiency also encounters technical bottlenecks

Method used

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  • Steam turbine set of power station and power generation method of steam turbine set

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Embodiment Construction

[0027] The technical solution of the present invention will be described in detail below in conjunction with the embodiments.

[0028] Such as figure 1 As shown, the steam turbine unit of the power station in the embodiment of the present invention includes a solar heat exchanger group, a steam Brayton cycle and a steam Rankine cycle.

[0029] Wherein, the solar heat exchanger group includes a first superheater 1 , a first reheater 2 , a second superheater 3 and a second reheater 4 .

[0030] The steam Brayton cycle includes a compressor 11, a regenerator 12, a high-pressure turbine 13, an intermediate heat exchanger 14, and a first generator 15. The outlet of the compressor 11 is connected to the low-temperature side inlet of the regenerator 12, and the regenerator 12 The low-temperature side outlet of the first superheater 1 is connected to the inlet of the first superheater 1, the outlet of the first superheater 1 is connected to the inlet of the high-pressure turbine 13, ...

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Abstract

The technical scheme of the invention discloses a steam turbine set of a power station and a power generation method of the steam turbine set. The steam turbine set comprises a solar heat exchanger set, a steam brayton cycle and a steam rankine cycle, the solar heat exchanger set comprises a first superheater, a first reheater, a second superheater and a second reheater, the steam brayton cycle comprises a compressor, a heat regenerator, a high-pressure turbine, a middle heat exchanger and a first power generator, and the steam rankine cycle comprises a condensation water pump, a low-pressureheater, a deaerator, a water feeding pump, a high-pressure heater, a medium-pressure turbine, a low-pressure turbine, a condenser and a second generator. According to the steam turbine set, the steamturbine set organically combines the brayton cycle with the rankine cycle, on one hand, the heat efficiency of the rankine cycle can be remarkably improved, on the other hand, the working medium flowpassing through the high-pressure turbine is very large, the internal efficiency of the high-pressure turbine is improved, the heat efficiency of the brayton cycle is ensured, and finally the heat efficiency of the whole unit is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of solar power generation, in particular to a steam turbine unit of a power station and a power generation method thereof. Background technique [0002] In a tower-type solar thermal power station, the performance of the steam turbine unit plays a key role in the power generation efficiency of the power station, and the cycle thermal efficiency of the steam turbine unit is required to be as high as possible, thereby reducing the power generation cost of the power station. The capacity of the existing steam turbine unit used in the tower solar thermal power station is 10-150MW, and the parameter range is: the pressure is 12-16.5MPa, and the temperature is 520-585°C. In general, the capacity and parameters of steam turbine units in tower-type solar thermal power plants are lower than those of existing subcritical thermal power units, and far lower than supercritical and ultra-supercritical thermal power units....

Claims

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Application Information

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IPC IPC(8): F03G6/06F01K13/00F01K11/02F01K23/02F01D15/10
CPCF03G6/06F03G6/065F01K13/00F01K11/02F01K23/02F01D15/10Y02E10/46
Inventor 郑开云黄志强
Owner SHANGHAI POWER EQUIP RES INST
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