先进超超临界空冷汽轮发电机组高位布置技术及工程应用
王树民,张翼,徐陆,李延兵,顾永正,卓华,孙锐,张满平,姜士宏, 刘建海,李红星
《中国工程科学》
2023年
第25卷
第2期
页码 147-159
doi:
10.15302/J-SSCAE-2023.02.012
摘要：
提高燃煤发电机组效率是实现节能降碳的直接手段，700 ℃超超临界发电的工程应用受制于高温合金材料价格成本阻 碍，有必要探索新布置、新结构本文以锦界电厂三期为例，介绍了超超临界空冷汽轮发 电机组高位布置技术取得的工程化创新实践。该工程实践表明，锦界电厂三期作为世界首例高位布置示范工程，主厂房采用钢 筋混凝土框架‒剪力墙结构，可有效降低整体重心、提高抗震性能，通过技术攻关有效保障主厂房结构、高温蒸汽管道和汽轮 发电机组的安全性；研究建议，加快发展清洁高效燃煤发电技术，统筹协调我国富煤缺水“三北”地区清洁高效先 进空冷煤电机组应用高位布置技术，为未来700 ℃超超临界煤电机组建设节约高温蒸汽管道提供实践经验
关键词：
超超临界；先进煤电；空冷汽轮发电机组；高位布置技术；主厂房结构安全；经济性；实时在线监测
1000 MW ultra-supercritical turbine steam parameter
optimization
FENG Weizhong
《能源前沿（英文）》
2008年
第2卷
第2期
页码 187-193
doi:
10.1007/s11708-008-0030-5
摘要：
The 2 × 1000 MW ultra-supercritical steam turbine of Shanghai Waigaoqiao Phase III project, which uses grid frequency regulation and overload control through an overload valve, is manufactured by Shanghai Turbine Company using Siemens technology. Through optimization, the steam pressure is regarded as the criterion between constant pressure and sliding pressure operation. At high circulating water temperature, the turbine overload valve is kept closed when the unit load is lower than 1000 MW while at other circulating water temperatures the turbine can run in sliding pressure operation when the unit load is higher than 1000 MW and the pressure is lower than 27 MPa This increases the unit operation efficiency. The 3D bending technology in the critical piping helps to reduce the project investment and minimize the reheat system pressure drop which improves the unit operation efficiency and safety. By choosing lower circulating water design temperature and by setting the individual Boiler Feedwater Turbine condenser to reduce the exhaust steam flow and the heat load to the main condenser, the unit average back pressure and the terminal temperature difference are minimized. Therefore, the unit heat efficiency is increased.
Structure improvement and strength finite element analysis of VHP welded rotor of 700°C USC steam turbine
Jinyuan SHI,Zhicheng DENG,Yong WANG,Yu YANG
《能源前沿（英文）》
2016年
第10卷
第1期
页码 88-104
doi:
10.1007/s11708-015-0387-1
摘要：
The optimized structure strength design and finite element analysis method for very high pressure (VHP) rotors of the 700°C ultra-super-critical (USC) steam turbine are presented. The main parameters of steam and the steam thermal parameters of blade stages of VHP welded rotors as well as the start and shutdown curves of the steam turbine are determined. The structure design feature, the mechanical models and the typical position of stress analysis of the VHP welded rotors are introduced. The steady and transient finite element analysis are implemented for steady condition, start and shutdown process, including steady rated condition, 110% rated speed, 120% rated speed, cold start, warm start, hot start, very hot start, sliding-pressure shutdown, normal shutdown and emergency shutdown, to obtain the temperature and stress distribution as well as the stress ratio of the welded rotor. The strength design criteria and strength analysis results of the welded rotor are given. The results show that the strength design of improved structure of the VHP welded rotor of the 700°C USC steam turbine is safe at the steady condition and during the transient start or shutdown process.
关键词：
700°C ultra-super-critical unit
steam turbine
very high pressure rotor
structure strength design
strength design criteria
finite element analysis
Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverized
Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI
《能源前沿（英文）》
2021年
第15卷
第1期
页码 68-77
doi:
10.1007/s11708-020-0697-9
摘要：
In a gas/particle two-phase test facility, a three-component particle-dynamics anemometer was used to measure the characteristics of gas/particle two-phase flows in a 29 megawatt (MW) pulverized coal industrial boiler equipped with a new type of swirling pulverized coal burner. The distributions of three-dimensional gas/particle velocity, particle volume flux, and particle size distribution were measured under different working conditions. The mean axial velocity and the particle volume flux in the central region of the burner outlet were found to be negative. This indicated that a central recirculation zone was formed in the center of the burner. In the central recirculation zone, the absolute value of the mean axial velocity and the particle volume flux increased when the external secondary air volume increased. The size of the central reflux zone remained stable when the air volume ratio changed. Along the direction of the jet, the peak value formed by the tertiary air gradually moved toward the center of the burner. This tertiary air was mixed with the peak value formed by the air in the adiabatic combustion chamber after the cross-section of / = 0.7. Large particles were concentrated near the wall area, and the particle size in the recirculation zone was small.
关键词：
industrial pulverized coal boiler
swirl burner
air/particle flow
particle dynamic analyzer (PDA)
标题
作者
时间
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万健如,牛亮,刘建华,牟江峰,余小红
期刊论文
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硗碛水电站大坝碎石土防渗料工程特性及土料设计
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先进超超临界空冷汽轮发电机组高位布置技术及工程应用
王树民,张翼,徐陆,李延兵,顾永正,卓华,孙锐,张满平,姜士宏, 刘建海,李红星
期刊论文
1000 MW ultra-supercritical turbine steam parameter
optimization
FENG Weizhong
期刊论文
Structure improvement and strength finite element analysis of VHP welded rotor of 700°C USC steam turbine
Jinyuan SHI,Zhicheng DENG,Yong WANG,Yu YANG
期刊论文
致力项目开发点燃发展引擎——多种核能与核技术新项目开发概要
毛晓明
期刊论文
Influence of mass air flow ratio on gas-particle flow characteristics of a swirl burner in a 29 MW pulverized
Rong YAN, Zhichao CHEN, Shuo GUAN, Zhengqi LI
期刊论文
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