Research On Project Management Of Main Steam And Regulating Valve Reconstruction Jointment Supervision Of Combined Cycle Units

In recent years, along with the air pollution in our country and the need to adjust the power structure to increase the intensity of natural gas as a clean energy source, is paid more and more attention. Natural gas has the characteristics of high efficiency, less pollutant emissions, start/stop quickly, flexible operation modes. According to the energy development in the Twelfth Five Year Plan issued by the State Council in January 1,2013, natural gas power generation installed capacity by 2015 will be based on eleven of the five double to reach 56000000 kilowatts, an average annual growth rate of 16.2%. is expected to 2020 natural gas power generation installed capacity will reach 100000000 kilowatts.Although natural gas generator set in China has developed to a certain scale, but by the policies and regulations not perfect, layout and coordination, air supply unit and the lack of core technology and other obstacles to development, natural gas power generation units in China on peak FM, run by way of the daytime. Gas turbine to power grid peak regulation and frequency modulation at the same time, also increased the cost of equipment maintenance, maintenance.Set start and stop frequently not only have an impact on the gas turbine component life, at the same time the start-up phase caused serious damage to the turbine, waste heat boiler equipment downtime and cold.This combination of a gas steam combined cycle unit main steam regulating valve, analyze the risk management of the project of joint crack of main steam regulating valve, combined with the transformation of technology and equipment of the construction process management, steps and measures of construction management of the implementation of the important parts of steam turbine.