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

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    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
。    8月25日消息，近期，不少网发帖称铁路12306APP购票存在漏洞，用同一个人的身份证和护照，就能够在12306上买到同一趟列车的两张车票。     为验证网传说法，有媒体实测，在12306的APP操作过程中，系统允许同时勾选同一个人的身份证、护照两类身份信息，完成支付后就能成功拿到同一趟列车的两张相邻座位的车票。

二 |     按照铁路相关规则，要想同时占用两个座位，两张车票都需要完成检票流程。有网友提出了操作方式：持身份证通过闸机进站，登上列车之后，再请乘务员用人工核验的方式完成护照对应的车票检票，以此就能保住第二个座位。          针对这一现象，12306客服称，因为身份证和护照分属不同证件体系，两者信息尚未互通，所以会出现同一人凭两类证件同时购得同车次多张车票的情况。不过官方并不提倡旅客采用这种方式出行。     一方面，该做法需要个人承担两份车票费用，会带来不必要的经济支出；另一方面，铁路座位属于公共出行资源，一人占用两个座位，会造成席位的浪费。     目前，客服已经把网友反馈的这一情况登记上报。铁路部门也提醒广大乘客，应当理性购票，不要刻意使用该方式抢占座位，共同维护铁路出行资源公平合理使用。

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Published on:05:35:42