Performance optimization method of steam combined cycle unit of medium-power gas turbine

A combined cycle unit and combined cycle technology, applied in steam engine installations, combined combustion mitigation, gas turbine installations, etc., can solve problems such as cost increase, achieve good economic benefits, expand market sales, and rationally use energy.

Inactive Publication Date: 2018-05-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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AI Technical Summary

Problems solved by technology

At present, the steam turbine with 6.0MW power in the domestic steam turbine industry basically has a medium pressure parameter of 2.35MPa / 390°C. If there is a large deviation from this parameter, the unit will be redesigned and the cost will increase. For the single unit required for the current gas turbine test project Therefore, it is advisable to select existing mature units for parameter calculation

Method used

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  • Performance optimization method of steam combined cycle unit of medium-power gas turbine
  • Performance optimization method of steam combined cycle unit of medium-power gas turbine
  • Performance optimization method of steam combined cycle unit of medium-power gas turbine

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the accompanying drawings.

[0013] The gas turbine exhaust temperature is 476°C and the flue gas flow rate is 59.42kg / s. According to the design specifications of the combined cycle, the initial steam temperature depends on the exhaust gas temperature of the gas turbine, and the difference between the two is generally 25-60 °C.

[0014] In the calculation of the waste heat boiler, the temperature at the pinch point is 9°C, the temperature difference at the approach point is greater than 5°C, and the temperature difference between the superheated steam temperature and the flue gas temperature at the superheater inlet is greater than 15°C. According to this, the steam evaporation of the waste heat boiler is calculated, and when the steam pressure changes, the evaporation also changes accordingly, and a ...

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Abstract

The invention relates to the field of gas turbine steam combined cycle power generation, particularly to a performance optimization method of a steam combined cycle unit of a medium-power gas turbine.The performance optimization method is characterized in that technological parameters are confirmed through optimization and calculation of a steam system, combined cycles adopt split-axle arrangement, and one gas turbine can be provided with one steam unit and a one-driven-one combined cycle is formed, or two gas turbines are provided with one steam unit and a one-driven-two combined cycle is formed. Technical advancement and good economy of the combined cycle unit of the gas turbine can be reflected through performance parameters calculated through the performance optimization method.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to a method for optimizing the performance of a mid-range power gas turbine steam combined cycle unit. Background technique [0002] At present, after the design or operation of new gas turbines, foreign manufacturers must optimize the combined cycle steam system. While possessing advanced gas turbine technology and products, they also provide combined cycle units with high comprehensive performance, which greatly improves product reputation. and market competitiveness. [0003] The gas turbine exhaust temperature is 476°C and the flue gas flow rate is 59.42kg / s. According to the exhaust temperature and flow rate of the gas turbine, the primary steam flow rate of the waste heat boiler is preliminarily calculated to be about 30t / h, and the power of the steam turbine is 6.0MW. At present, the steam turbine with 6.0MW power in the domestic steam turbine industry basically has a medium pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C6/18F01K23/10
CPCF01K23/106F02C6/18Y02E20/16
Inventor 徐士民崔军陈静芳李静王刚
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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