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河北启动防汛四级应急响应_我的网站

一 |     　　讯 据河北省应急管理厅消息，河北省气象台8月25日9时11分发布暴雨橙色预警信号，预计8月25日下午到26日上午，张家口南部、唐山南部、保定、雄安新区、廊坊、石家庄、沧州、衡水等地有暴雨到大暴雨，局地降雨量可能超过200毫米；降雨对流明显，部分地区1小时雨量可达70毫米以上或6小时雨量可达100毫米以上。经会商研判，河北省防指决定于8月25日10时对石家庄市、张家口市、唐山市、廊坊市、保定市、沧州市、衡水市、雄安新区、定州市、辛集市启动防汛四级应急响应。    

    Core castings for the world's most powerful onshore wind turbine Photo: website of Science and Technology Daily
The core castings for the world's most powerful onshore wind turbine in terms of single‑unit capacity have recently been delivered by a Chinese company, marking a technological breakthrough in the large‑megawatt onshore wind power castings, domestic news portal stdaily.com affiliated with Science and Technology Daily reported on Wednesday.
Independently developed by Dalian Huarui Heavy Industry Group Co., Ltd. (DHHI), the delivered components include the bearing housing and base castings for 15 MW doubly fed onshore wind turbines. The components need to bear the huge gravity, wind loads and alternating loads transmitted from the blades and hub, and transfer the loads to the generator, ensuring steady rotation of the main shaft. 
The products passed all customer inspections and assessments in one go and were officially delivery, stdaily.com reported.
Adopting an advanced modular design, the turbine components delivered can support flexible power adjustment ranging from 13 MW to 16 MW, enabling adaptive operation to varying and complex wind conditions across diverse regions, the report said.
The turbine's rotor diameter ranges from 240 meters to 260 meters, and are compatible with tower heights of 135 meters to 190 meters, delivering a maximum swept area of 53,000 square meters, roughly 8 standard football pitchs (105m×68m). This places the unit's overall performance among the world's top-tier.
Such super-large castings place extremely high demand on material properties, casting processes, dimensional accuracy and internal quality. The successful validation and delivery of the products therefore demonstrate the research and development, as well as manufacturing capabilities in super‑large wind power castings, stdaily.com reported.
Global Times
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