A front-end composite main steam turbine flow parameter optimization system for improving efficiency and peak regulation

Abstract

The invention relates to a through-flow parameter optimization effect improvement and peak regulation system for a main compound steam turbine of a front machine. A front two-cylinder steam turbine, an electric generator of the front two-cylinder steam turbine, a heater 0, pipelines and accessories of the pipelines are additionally arranged and form the system together with a main steam turbine. A method that the front steam turbine is used for increasing circulation initial parameters is fully used, pressure level group parameters of the main steam turbine are optimized, the peak regulation performance of a thermal power generating unit is improved, and the circulation thermal efficiency of a thermal power plant and the relative inner efficiency of the steam turbines are improved. For the active-duty unit, the system can increase capacity, improve efficiency improvement and reduce the station service power consumption rate, so that the purpose that the ultra-high pressure and ultra-high temperature heat supply steam extraction function is provided by a condensing steam turbine is achieved. In the aspect of optimized design of a thermodynamic system of the new-built thermal power generating unit, a technological path that thermalized steam flow can be fully used and the unit is suitable for wide-load peak regulation operation is provided. By the application of the through-flow parameter optimization effect improvement and peak regulation system, remarkable energy-saving emission reducing economic benefits and social benefits can be generated.

Description

technical field [0001] The invention relates to a thermal power generation system, in particular to a front-end composite main steam turbine flow parameter optimization efficiency improvement peak regulation system. Background technique [0002] Thermal power units in the "13th Five-Year Plan" plan will still account for more than 55% of my country's future energy structure. With the optimization of energy structure and the improvement of environmental protection requirements, thermal power units need to further improve peak-shaving performance and improve energy conservation and emission reduction. To adapt to the requirements of new energy access to the grid, but the technical requirements are getting higher and higher, and the difficulty is getting bigger and bigger. [0003] Research and development of high-parameter, large-capacity thermal power generation unit operating technology with high efficiency at low load has always been an important topic in the field of therma...

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Problems solved by technology

[0004] The present invention aims at the problem that the existing thermal power units need to further improve the efficiency and the peak regulation technology is difficult, and proposes a front-end composite main steam turbine flow parameter optimization efficiency improvement peak regulation system, which can increase the capacity and efficiency of the active units and reduce the power consumption rate of the factory, and solve the problem of providing ultra-high pressure and ultra-high temperature heating and extraction for condensing steam turbines

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