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SW2型少油断路器油位的调整
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作者 胡建强 《电世界》 1999年第10期26-27,共2页
少油断路器油位的高低直接影响断路器的灭弧性能及开断特性.因此,都规定了油位的正负公差带,即油表的上、下限。油位过高,会使断路器油面上的缓冲室空间减少,在开断额定短路电流时,势必增加缓冲室空间的压力。如果此压力超过了缓冲室空... 少油断路器油位的高低直接影响断路器的灭弧性能及开断特性.因此,都规定了油位的正负公差带,即油表的上、下限。油位过高,会使断路器油面上的缓冲室空间减少,在开断额定短路电流时,势必增加缓冲室空间的压力。如果此压力超过了缓冲室空间的极限强度,就可能发生爆炸。同时,油位过高还会使吹弧时的预排气(即打通油层中的吸弧道)所需的时间相应延长,使燃弧时间增大,引起灭弧室内压力的增高,易出现灭弧装置损坏及严重喷油的不良现象。油位过低。 展开更多
关键词 断路器 油位调整 SW2型 断路器
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水布垭电厂500kV主变含气量超标分析与处理 被引量:5
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作者 余爱彤 张松柏 杨春 《水电与新能源》 2012年第1期54-56,共3页
介绍了500 kV主变压器含气量超标原因分析及真空阀更换、变压器油脱气和油枕油位调整等处理方法。
关键词 含气量超标 气体分析 真空阀 脱气 油位调整
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China Crude Oil Imports and Oil Market-oriented Reform 被引量:1
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作者 Wang Zhen Zhang An Liu Mingming 《China Oil & Gas》 CAS 2016年第2期9-15,共7页
Crude oil imports in China are mainly carried out by state-owned entities with non state-owned entities as compliment. Crude imported by 5 state-owned entities accounts for 90% of the total imports, while non state-ow... Crude oil imports in China are mainly carried out by state-owned entities with non state-owned entities as compliment. Crude imported by 5 state-owned entities accounts for 90% of the total imports, while non state-owned entities are about given more freedom in using and importing crude. In 2015 only, there were 13 compauies graftted rcritlt access to imported crude oil and 6welv qualiied to import rights. Currently, there are 29 non-state-owned companies engaging in crude import business. China oil market is .faced with severe challenges. Ttre growth rate of oil demand declined, and dependence upon imported oil increased and reached as high as 61.26% in 2015. Refined oil demand growth also slowed down, and oil refining overcapacity got prominent and completion wouht become fiercer" in future. Overcapacity was about 140 million toils per year in 2015. Consumption ratio of diesel to gasoline went on declining, and ttre task of product structure adjustment was heavy. China oil market is undergoing great transformation, and institutional mechanism zoill go ahead, on the basis of centering on orderly release of limitations on crude oil and refined oil import and export, orderly release of competitive business arrd government pricing of oil/gas downstream links, vigorous resolving of overcapacity, strengthening low-carbon development, and laying a solid foundation.for guarantee. 展开更多
关键词 Crude oil import Oil market Reform and detelopment Orderly release Capacity resolving
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解读可变气门正时技术(五)
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作者 孔令来 《汽车维护与修理》 2004年第9期43-44,共2页
2.4.7故障代码P2647(VTEC油压开关电路电压过低)诊断步骤 (1)检查发动机机油油位。如果油位不正常,则将发动机机油油位调整至正常。
关键词 汽车维修 发动机故障 可变气门正时技术 故障代码分析 油位调整
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