共查询到19条相似文献,搜索用时 140 毫秒
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为满足我国未来大坝深水检测与修补加固技术的发展需求,针对高坝大库深水复杂环境的特点,攻克潜水器宽视野观测、水下作业和安全等技术难点,形成具有自主知识产权的大坝深水检测成套技术装备——“禹龙号”大坝深水检测载人潜水器。为了验证“禹龙号”载人潜水器的工程应用性能,先后在汤浦混凝土面板堆石坝、新安江重力坝和雅砻江锦屏一级拱坝等3种坝型中开展初步应用试验,完成坝面巡检、坝面清理和水下渗漏示踪等作业。通过在不同坝型大坝水下检测中的初步应用,验证了“禹龙号”载人潜水器的性能和作业能力,形成了未来大坝深水检测技术的成功经验与发展需求,为装备的进一步完善与推广应用积累了经验。 相似文献
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在采用深水全水下生产系统和浮式生产储油卸油装置(Floating Production Storage and Offloading, FPSO)进行油气田开发时,海流和FPSO的往复运动会给海缆带来不利影响。对此,分析海缆的水下在位形式,推荐采用深水海缆波构型。对海缆起始铺设、海缆卡子与水下基盘就位的特殊设计等海缆技术进行研究,并通过实际案例验证该海缆安装设计方法的效果。实际应用结果表明,这种方法能解决“深水全水下生产系统+FPSO”这种油气田开发形式的复杂结构和构型的海缆水下安装难题。 相似文献
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深水水下结构物的绝热保温技术是深水油田开发的关键技术之一,我国目前对其研究不足,文中介绍了深水水下结构物保温的必要性、保温材料的研究与发展现状、保温材料涂覆安装方式等内容,为我国深水水下结构物的保温技术研究提供参考。 相似文献
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“八五”期间,我局依托国家重点工程施工,开发(引进)三大成套技术,即格形钢板桩码头结构设计与施工;气压法长距离曲线顶管施工;长江黄石大桥深水桥墩施工,从而增加了新的施工手段,提高了整体技术实力,拓宽了经营,施工新领域,对我局的发展起到重要的作用。 相似文献
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《船舶与海洋工程学报》2020,(3)
Subsea development is moving constantly toward simplification, digitalization, and cost-out strategies because the exploration and production of hydrocarbons are moving toward deeper and remote sea water areas. Usage of all-electric subsea technology instead of hydraulic technology is growing and will be the future of subsea systems due to the former's environmental and functional advantages and reduced costs. The benefits of all-electric subsea systems are health, safety, and environment(HSE)and improved reliability, flexibility, and functionality compared with traditional hydraulic-electrical systems. Existing electrohydraulic technology for a typical subsea system, hydraulic and electric actuators, and subsea manifold valves including valve types and selection philosophy have been reviewed in this paper. Some major worldwide oil companies such as Equinor and Schlumberger have successful experiences with subsea electric actuators. Considering the benefits of all-electric technology especially in terms of cost and HSE, as well as successful experiences of two major oil companies, further research in this area is warranted. One of the gaps in existing reviewed literature is the effect of using all-electric actuators for manifold valves. Thus,three main questions related to electric actuator selection, requirement of safety integrity level(SIL), and effect of using electric actuators on manifold valve selection have been addressed and answered. Forty hydraulic actuated manifold valves from nine past subsea projects in different parts of the world, mainly Africa and Australia, have been selected for the analysis of all-electric actuators. Results show that 93% of the valves require spring-return electric actuators, whereas 7% can be operated with conventional electric actuators without any spring. The manifold valves do not require SIL certification because they are not connected to an emergency shut down system. Introducing the electric actuators to the manifold valve will not change the valve selection philosophy. 相似文献
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介绍应用于自动化堆场的轨道式集装箱门式起重机的定位技术,包括起重机的大车定位、小车定位、起升高度的定位、吊具微调定位和起重机装卸集装箱的定位。定位过程综合应用了光、电、磁、机械、液压、图像处理等先进技术,多种定位方式互相补充,使得定位快速准确。 相似文献
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随着海洋石油工业技术的发展和海上油田水深的增加,水下生产系统已越来越受到世界各国的重视,并已被纳入世界各大石油公司的重要发展战略。在国内,水下生产系统的研制和开发尚仍属起步阶段,急需系统、全面的数据资料供相关人员查阅。为此,水下生产系统数据库首次被提出并实现。本数据库通过搜集汇总采油树、水下工艺设施、水下接头、控制系统、常用材料、工程公司、项目案例等7个方面的国内外最新相关数据资料,同时进行合理的编排、分类以及整理,最终以网页形式浏览查询。该数据库包含有水下生产系统的构成、各部分的技术要点、主要供应商、设计服务以及建造安装服务的专业公司、成功应用的案例以及成本预算等信息,为相关人员进行水下项目的可行性分析以及技术决策提供了全面、系统的数据支持。 相似文献