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压缩机组状态监测仪表的安装与维护
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作者 李锐 过磊 +1 位作者 赵洪君 王铁刚 《仪器仪表用户》 2013年第3期89-91,共3页
乙烯装置有三套大型压缩机组,机组本体的状态参数通过仪表测量元件送到状态监测系统,实时监控和维护,从而保证装置的安全平稳生产。仪表状态监测系统由轴振动、轴位移、转速、键相位、轴瓦温度传感器及相关设备构成,机组上的仪表设备的... 乙烯装置有三套大型压缩机组,机组本体的状态参数通过仪表测量元件送到状态监测系统,实时监控和维护,从而保证装置的安全平稳生产。仪表状态监测系统由轴振动、轴位移、转速、键相位、轴瓦温度传感器及相关设备构成,机组上的仪表设备的正确安装与正常测量是压缩机组正常运行的前提,因此在每个季度仪表预防性维护检查、故障抢修及大修时对仪控设备的检查提出更高更严格的要求,确保无仪表原因停车。 展开更多
关键词 压缩机组 状态监测系统 预防·性维护检查
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Evaluation of Reinforced Concrete Structures with Views for Rehabilitation
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作者 Jackline de Assis Lopes S. Oliveira Romildo Alves Berenguer +2 位作者 Lydia Barreto Eliana Cristina Barreto Monteiro Romilde Almeida de Oliveira 《Journal of Civil Engineering and Architecture》 2016年第1期72-80,共9页
The increasing number of pathological occurrences is found in reinforced concrete structures, so does the demand for inspection and maintenance services in residential communities in the state of Pernambuco, which aim... The increasing number of pathological occurrences is found in reinforced concrete structures, so does the demand for inspection and maintenance services in residential communities in the state of Pernambuco, which aim to detect damage to the structure in a timely manner to minimize repair costs, thus applying preventive maintenance in order to guarantee the estimated useful life of the project for the building. However, it is observed that the practice of periodic inspections is not yet part of the culture of a certain segment of the population that does not have economic means and knowledge of the importance of maintenance to ensure the integrity of the structure. It was used in this work an inspection script with use of tests and methodology to quantify damage and to check the state of degradation of two residential buildings with more than 20 years and built near the seafront where environmental aggression is strong. The deterioration found in each of the buildings has been differentiated due to different corrective maintenance performed at every building. The last maintenance, performed in Building A, was performed by corrective hand of unskilled labour guided by the community itself, which has no expertise in the field of civil engineering. In Building B, the situation is similar, compounded by the opinion of some tenants that there is no need for this routine, even the structure being in critical condition, as was confirmed with the application of the methodology employ. There should be a legislation that governs the execution of inspections and maintenance programs in addition to the existing technical standards. The methodologies presented suitable for checking the degree of degradation of the structures and performed tests confirmed the diagnosis obtained by visual inspection and quantification of damage. 展开更多
关键词 PATHOLOGY INSPECTION maintenance LIFESPAN concrete.
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