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本文简述了东海航海保障中心现有150 t航标船的作业模式,对现有航标船作业模式进行了评估和分析,对近年引进使用的液压夹持装置进行简单介绍,并以连云港航标处现有的150 t夹持航标巡检船为例,检验航标夹持装置在航标作业效率、质量、人员安全以及浮标保护等方面的成效。 相似文献
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主要介绍为探索改革传统跳标作业方式,为航标作业提供便利和快捷维护航标能力,在国内首次研制成功的带航标夹持装置的小型快速航标巡检船。 相似文献
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本文主要介绍了为探索改革传统跳标作业方式的路予,为航标作业提供便利和快捷维护航标能力,而在国内首次研制成功的带航标夹持装置小型快速航标巡检船。 相似文献
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本文介绍新开发的航标巡检船-航标夹持船的概况及其夹持装置设计要素与应用情况;它对沿海航标的维护、保养,能起到改善劳动强度、提高工作效率、确保安全的作用。促进航标巡检作业方式的更新。 相似文献
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本文介绍新开发的航标夹持,它对沿海航标作业、维护、保养,改善劳动强度、提高工作效率、确保安全起到一定作用。文章对航标夹持装置在安装调试中出现的摆动马达质量问题进行分析,为今后制造、分析问题提供经验。 相似文献
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文中针对传统航标船作业时自动化程度低、劳动强度大、安全系数低的缺点,结合现行航标锚链夹持设备的现状,介绍了老型航标船航标锚链夹持设备改造的必要性和改造的方式,并对不同的改造方式的可行性做出探讨。 相似文献
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介绍了我国港口资源的整合现状,指出港口整合可以提升港口的形象和地位,也为区域经济和城市的发展注入强大的动力。最后指出在港口资源整合中要避免的几个问题。 相似文献
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广州集装箱码头的轮胎式场桥小车制动器使用10多年后,出现了许多问题,故进行了改造.分析了轮胎式集装箱龙门起重机小车制动器的主要故障现象,提出了改造方案,并加以实施. 相似文献
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本文对现有的选定球面轴承的三种工程方法进行了分析比较.引入了“合力系数”,并给出了合力方向上投影面积的精确解. 相似文献
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分析柴油机故障中常见的机体裂纹故障原因,认为由于设计缺陷和管理及操作不当,易造成船舶柴油机缸体上的裂纹多发生在气缸套凸肩处。如不及时处理这些裂纹和故障,就会造成缸套的裂纹直至出现缸套漏水等严重后果,针对NANTAIQUEEN轮柴油机对该类型故障的检修提出具体措施。 相似文献
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The hydrophysical and hydrochemical structure of the Sea of Azov, with developed bottom anoxia, was studied during the RV “Akvanavt” cruise from July 31 to August 03, 2001. The anoxic zone with a thickness from 0.5 to 4 m above the bottom was found in all deep regions of the Sea. Concentrations of hydrochemical parameters were similar to the pronounced anoxic conditions (about 90 mmol m− 3 of hydrogen sulfide, 17 mmol m− 3 of ammonia, 6 mmol m− 3 of phosphate, 7 mmol m− 3 of total manganese). The hydrophysical structure was characterized by the uniform distribution of temperature in the upper 6–7 m mixed layer (UML). Below this a thin (0.4–0.8 m) thermocline layer was observed, just above the anoxic waters. Formation of this phenomenon was connected with that summer weather conditions. Intensive rains led to increased influx of river waters in June. That resulted in large input of allochtonous organic matter (OM) and inorganic nutrients; the latter were consumed on the additional autochthonous organic matter production. In July the weather was characterized by a significant rise in the daily averaged air temperature and large oscillations of temperature during the day. In this period a wind of constant direction was absent, but wind bursts were observed. The completed analyses showed that the formation of such a structure could be connected with the following factors: (i) positive growth trends of the daily averaged temperature and the daily oscillations of temperature, (ii) presence of wind bursts. The joint action of these factors resulted in the formation of the UML. The amplitude of wind bursts determined the depth of UML, and the value of trend determined the value of the temperature change in the thermocline. An initial presence of bottom halocline (caused by the Black Sea water influx to the bottom of the Sea of Azov) prevented the heating of the bottom layer and therefore led to an increase of vertical gradient of temperature in the thermocline. The spatial distribution of the turbulent exchange coefficient confirmed the existence of a “stagnation” area located above the anoxia zone, which is also, apparently, the reason for its occurrence. 相似文献
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