绿灯侠

Chinese firm delivers self‑developed core casting for world's most powerful onshore wind turbine_我的网站

一 |     据日本共同社16日报道，日本政府地震调查小组15日警告称，未来三十年内南海海槽发生“特大地震”（即8级及以上）的概率已经提升至80%。    

    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
。其中，北海道的根室市沿岸及宫城县沿岸发生“特大地震”的可能性更高。这是日本时隔不到半年再发“特大地震”警告。

二 | 去年8月，日本宫崎县附近海域发生7.1级地震后，由于担心影响附近的南海海槽，日本气象厅发布了有史以来的首个巨大地震警报。专家团队预计，若日本南海海槽再发生大地震，导致的伤亡人数最高将超过30万。（报道链接：日本首次发布“巨大地震警报”，首相取消外访行程）去年8月，宫崎县附近海域发生7.1级地震后，一处坍塌的房屋 日本地震专家每年一月都会重新计算发生特大地震的概率，自2018年至今，这一概率一直维持在70%-80%之间。据《朝日新闻》报道，南海海槽发生“特大地震”的概率以每年不到1%的幅度逐年递增，今年调查小组推算出的概率为75%-82%，四舍五入后得出了“80%”这个数字。日本政府地震调查小组组长平田直志（音译）在新闻发布会上解释称，这一概率意味着该国任何时候发生地震都不足为奇，“我们希望民众能时刻准备好。”平田直志称，自2024年1月日本能登半岛发生6.0级地震以来，该国已经发生过多次震级在6级以上的地震。

三 | “大家需要提高警惕，地壳活动可能将持续活跃一段时间。

四 | ”来自日本政府地震调查研究推进本部的数据显示，过去1400年间，南海海槽每隔100到200年就会发生一次“特大地震”，最近一次发生在1946年，当时整个日本都有震感。不过，也有地震学家对“日本政府地震调查小组定期发布地震概率预测”的做法表示反对。“地震不会按照周期性发生，地震的发生是不可预测的。

五 | ”东京大学名誉教授、地震学家罗伯特·盖勒批评称，这种根据过往地震频率预测未来地震的做法毫无意义。

六 | 红星新闻记者 黎谨睿编辑 杨珒 责编 魏孔明（下载红星新闻，报料有奖！）。

Current article:http://jv2nra.hunyoduozuiaopoulun.buzz/6u3xez/zgalh.html

Published on:11:47:56