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第五百三十八章 LNG进口大国需要自主LNG船的支撑(2 / 2)

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“董事长,各位领导,咱们的LNG船在技术上,要求比任何一型船舶都要苛刻。首先是服役寿命,要求船体具备四十年以上的使用年限。”

“其次,庞大而复杂的低温报警网络,三千多个低温报警点,以及全船货舱区总长达一百多公里的焊缝,如果出现一点失误,造成泄露,那对整艘LNG船来说,都是致命的。”

“当然还有我们和船东签订的合同条款,也是相当严格,交船期如果延迟一天,罚款就是十五万美元;一厘米的吃水误差,就是一百万美元的罚款,等等!”

“当然最关键的还是货物围护系统,这是GTT公司的专利技术,也是LNG船最核心的技术,现在我们最关键的是要将这项引进的专利技术,通过实际建造,再转化成我们自己的技术。”

“关键点就是绝缘箱制作、安装技术,以及薄膜安装和焊接技术,密性试验技术,还有专用安装平台制造,安装拆卸技术等等。就拿安装平台来说,就有多达数万个部件,这些都是我们要掌握并且加以改进提高的技术。”

当杨海峰讲到这些的时候,在场的每一个人,都感觉到了一股无形的压力。

沈欢也记得,吴东中华造船厂,一直在努力实现LNG船关键设备和材料的国产化,比如LNG船低温不锈钢管,在第七艘LNG船的建造当中,就开始全面应用国产的。

LNG船用低温不锈钢管,要求设计温度为零下192摄氏度、工作温度为零下163摄氏度,前六艘LNG船都是从欧洲进口。因为这种钢管的研制难度非常之大,要知道普通的钢材在零下几十度,就会变得脆弱不堪,更不要说承受这种极限的低温了。

所以吴东中华造船厂也是积极的培育LNG产业集群当中的配套供应商,最终与配套供应商共同完成了这种LNG船低温不锈钢管的国产化工作,这样不但使得成本得到了大幅度降低,更是缩短了周期。

当然不仅仅是如此,在LNG船配套国产化的进程中,中海交大等高等院校,也是做出了很大的贡献。比如对LNG最关键的技术,低温维护系统的建造,吴东中华造船厂与中海交大合作,就解决了LNG低温围护系统及LNG船绝缘箱智能制造难题。

中海交大设计出了具有独立自主知识产权的全新绝缘箱机器人自动生产线,从下料、物流、打钉和填充,精度达丝级以上,这种自动生产线,就类似于沈欢搞出来的船舶脉动式生产线,它能够适应不同容量LNG船型的绝缘箱制造。

当然在中国造船工业领域,不仅仅是吴东中华,江南常兴造船集团也在努力进行LNG船的研发工作。只不过江南常兴造船集团选择的是球罐形LNG船,这与吴东中华选择的船型不一样。这两种LNG船最大区别是其货物围护系统的不同。

2015年江南常兴造船厂就建造出1艘世界上单船舱容最大的3万立方米C型货舱LNG运输船。

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