101 当代化工研究 Chenmical Intermediate 科研开发 2016·04 浅谈低温情况下风电机齿轮箱油的流动性问题 孙彬彬 (国华(呼伦贝尔)新能源有限公司内蒙古021000 摘要:作为一种清洁的可再生资源,风力发电已成为一种必然的趋势。然而在东北、内蒙、华北等中国的风力发电大区常出现极端低温 天气。低温下润滑油的流动性会受到很大影响从而会使得齿轮箱不能得到润滑,导致风电机出现故障报警现象。本文即详细介绍了润滑油 的低温流动性及其有可能带来的风电机齿轮箱故障问题并给出了解决方案。 关键词:低温;风电机;齿轮箱;润滑油 中图分类号:T文献标识码:A Analysis of Oil Mobility Problem of Wind Turbine Gear Case in Low Temperature Sun Binbin Guohua ( HulunBuir )New Energy co .,LTD ,Nei Monggol ,021000 ) Abstract :As a kind of clean and renewable resources ,wind power generation has bee an inevitable trend .However ,in the wind power generation places such as Northeast China ,Inner Mongolia and north China often have the extremely cold weather .In low temperature ,the liquidity of lubricating oil will be badly affected thus it makes gear box can't get lubrication and causes fault alarm phenomenon for wind turbine motor .In this paper ,it makes a detail analysis of the low temperature fluidiry of lubricating oil and the problems that may cause wind turbine gear case malfunction problem ,finally ,the solution is given Key words :low temperature ;wind turbine ;gear case ;lubricating 当今,风能发电凭借其较低的生产成本,及绿色环保的 轮油的流动性逐渐增大,系统压力也随之增大。当油的压力 特点,受到了越来...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018No.4 试验与应用 活性粉末混凝土配合比优化试验研究 Experimental Study on Mix Proportion Optimization of Reactive Powder Concrete 高辉 (天津市建筑科学研究院,天津300193) 摘要:为了便于原材料来源更好地满足实际工程需要,采用天然河砂取代传统的石英砂,在标准养护条件下,制 备出满足强度要求的活性粉末混凝土。并研究了粉煤灰微珠、水胶比、骨料、钢纤维掺量对活性粉末混凝土性能的影响。 在考虑性能和经济成本的基础上,提出了活性粉末混凝土最优配合比:水胶比为0.14,骨料选用水洗并过4.75mm筛的 河砂,且用量为1154kg/m3,钢纤维最佳掺量为150kg/m3。 关键词:活性粉末混凝土;配合比;抗压强度 中图分类号:TU528.31 文献标识码:A 文章编号:1005-8249(2018)04-0035-04 Gao Hui ( TianjinResearch Institute of Building science ,Tianjin 300193 ,China Abstract :To improve the raw material resources of ultra-high performance concrete for construction and application ,the reactive powder conerete which satisfies the strength requirement was prepared by using natural river sand to replace the traditional quartz sang under the standard curing conditions .The influences of fly ash micro beads ,water to binder ratio ,sand ,dosage of steel fiber on the properties of reactive powder conerete were studied .Based on the properties and cost ,the optimum mix proportion of reactive powder concrete was proposed :water to binder ratio is 0.14 ,aggregate is washed river sand and passed through 4.75 mm sieve ,which dosag...
施工技术 2013年5月下 94 CONSTRUCTION TECHNOLOGY 第42卷第10期 do1:10.7672/gjs2013100094 泰州万达广场大型城市综合体项目 施工现场平面布置管理 孙晓阳,颜卫东 (中国建筑第八工程局有限公司总承包公司,上海200135) 摘要]大型城市综合体项目施工总平面布置与管理为关系工程顺利进展的关键因素之一,以泰州万达广场项目 为例,探索其总平面管理的经验思路、方法、途径,在工程实践的基础上对该项目的总平面布置和管理的原则及布 置的步骤和要求进行探讨,取得了很好的社会效益和经济效益 关键词】项目管理;大型城市综合体;平面布置 中图分类号】TU71 文献标识码]A 【文章编号】1002-8498(2013)10-0094-03 Construction Site Layout Management for Large City Complex Project of Taizhou Wanda Plaza Sun Xiaoyang ,Yan Weidong General Contract Engineering Company ,China Construction Eighth Engineering Division Co ..Shanghai 200135 ,China ) Abstract :The overall construction site layout and management is one of the key factors that affect the smooth progress of the construction for large city plex projects .Taking the project of Taizhou Wanda Plaza as an example ,the experiences ,ideas and methods for overall site layout management were explored .Based on the project practice ,the principles ,procedures and requirements for overall site layout and management were discussed .As the result of the above efforts ,good social and economic benefits were obtained . Key words :project management ;large city plex ;plan layout 施工总平面管理就是对工程施工中所占据一 工程...
2011年12月下 施工技术 第40卷第355期 CONSTRUCTION TECHNOLOGY 81 泰州万达广场城市综合体项目 总承包管理的实践与探索 孙晓阳,颜卫东,陈华,余林峰 (中国建筑第八工程局有限公司总承包公司,上海/200315) [摘要]泰州万达广场为集多种业态于一体的大型城市综合体项目,其建设具有工程规模大、工期紧张、资源投人 量大、建筑功能多样化、多家分包单位立体交叉作业等特点.结合项目特点,采用融人业主管理模式的全方位总承 包管理,总承包单位承担工程建设全过程的工程管控协调.介绍了总承包管理模式的合同结构、框架、组织及实 践,在工程实践的基础上对该项目的总承包管理进行全面分析和总结. [关键词]项目管理;城市综合体;总承包管理;管控计划;组织模式 [中图分类号]TU712[文献标识码]A[文章编号]1002-8498(2011)24-0081-05 Contracting Management of Large Urban Complex Project of Taizhou Wanda Plaza Sun Xiaoyang Yan Weidong Chen Hua Yu Linfeng General Contract Company of China Construction Eighth Engineering Division Co.Ltd.Shanghai 200315 China) Abstract:As a large urban plex project Taizhou Wanda Plaza has some special characteristics such as large scale strict construction time large investment of resource multi function as well as cross- operation of many sub-contracting units.Based on the characteristics contracting management mode pounding with owner management is adopted.The contracting pany is responsible for managing and controlling of the whole process.The contract frame organization and practice of contracting mode are introduced.Moreover the practices is analyzed and summarized in detail. Key wor...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILMZATION 20180.4 试验与应用 污水环境下粉煤灰改良土力学特性研究 Study on Mechanical Properties of improved Soil with Fly Ash in Sewage Environment 姚运 (成都理工大学工程技术学院,四川乐山614007) 摘要:为了探究污水环境下粉煤灰改良土的力学变化特性,对特定配比的粉煤灰改良土进行了不同污水浓度环 境和养护时间下的单轴抗压、剪切以及渗透试验。研究结果表明:相同养护龄期下,污水浓度越高,粉煤灰改良土的抗压、 抗剪强度以及渗透率则均逐渐减小;清水环境下,粉煤灰改良土的强度随养护时间增加而逐渐增大,高污水浓度下, 强度呈先增后减的趋势,而渗透系数在清水、低浓度污水以及高浓度污水下的变化特征分别为负幂函数降低、先减后 增以及逐渐增大。试验结果对于粉煤灰改良土在工程建设领域的应用具有重要意义。 关键词:污水环境;粉煤灰改良土;浓度;养护龄期;强度;渗透系数 中图分类号:TU528.1 文献标识码:A 文章编号:1005-8249(2018)04-0003-04 Yao Yun ( EngineeringTechnical College of Chengdu University of Technology ,Sichuan Leshan 614007 ,China ) Abstract :To explore the mechanical change characteristics of fly ash modified soil ,uniaxial pression ,shear and permeability tests of different proportion of fly ash improved soil under different sewage concentration environment and curing time were carried out .The results showed that in the same curing period ,the higher the concentration of wastewater ,pressive strength ,shear strength and permeability decreased ;In clean water environment ,fly ash improved soil strength increased gradually with the increase of curing time .In high concentration of was...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013NO.5 专题研究 水胶比矿渣粉对混凝土力学性能影响的试验及机理研究* Water/cement Ratio and Slag Powder Experiment and Echanism Study of Concrete Mechanics Performance Influence 李双喜,王志明2,唐新军 (1.新疆农业大学水利与土木工程学院,乌鲁木齐市830052;2.新疆克孜尔水库管理局,新疆库车县,842313) 摘要:以不同配比的水胶比和矿渣粉掺量为影响因素,配制混凝土试件进行抗压强度正交试验,深人系统的研究 其对高性能混凝土力学性能的影响.在此基础上,通过电镜观测,从微观机理角度对宏观性能进行分析解释.研究表 明,混凝土的抗压强度均随着水化龄期的延长而增大.水化早期,接有矿渣粉的高性能混凝土强度都较低;水化后期,矿 渣粉活性效应发挥显著.在水胶比不变时,随着矿渣粉掺量的增加混凝土的强度是在逐渐降低的.使用42.5R普通水 泥,控制水胶比在0.40-0.20,掺加矿渣粉,可配制出C45~C65的高性能混凝土.微观机理研究显示矿渣粉的存在使混 凝土中孔隙减少,孔径变小,结构变密实,起到了很好的填充和微集料作用. 关键词:混凝土;矿渣粉;水胶比;力学性能;微观机理 中图分类号:TU528.1文献标识码:A文章编号:1005-8249(2013)05-0019-04 Li shuang-xi Wang zhi-ming Tang xin-jun College of water conservancy and civil engineering of Xinjiang Agricultural University 830052; Administration of kizil reservoir in xinjiang 842313) Abstract:Slag powder instead of cement mixing into concrete has two aspects of technology and economic benefits.According to this char- acteristic based on the different ratios of water/cement ratio and dosage of slag powder as influencing factors concrete specimens for pressive strength of orthogonal test is prepared and thorough system to study the effect on the mechanical properties of high performance concrete.On this ba- sis by electron microscopy sem)observations macro performance is analyzed from the Angl of microscopic mechanism explanation.Studies have shown that the pressive strength of concrete increases with hydration time.In the early hydra...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2015no.2 试验与应用 水玻璃激发粉煤灰、矿粉活性的试验研究 Experimental Study on Fly Ash and Slag Activated with Sodium Silicate 吴辉琴,张春,李青,吴超,户相洛 (广西科技大学土木建筑工程学院,广西,柳州,545006 摘要:以水泥为主要胶凝材料,掺加工业废渣粉煤灰、矿粉作为替代物,同时添加一定量的水玻璃激发剂,研究其 对矿物掺合料的激发机理及合理掺量。结果表明:水玻璃对矿物掺合料的活性激发效果表现良好,改善了水泥基材料的 强度,实现了保护环境和节约经济的目的。 关键词矿物掺合料;水玻璃;活性激发 中图分类号:TQ528.02 文献标识码:A 文章编号:1005-8249(2015)02-0023-03 WU Hui-qin ,ZHANG Chun ,LI Qing ,HU Xiang-luo WU Chao ( Collegeof Civil Engineering ,Guangxi University science and technology ,Liuzhou 545006 ,China ) Abstract :The stimulation mechanism of mineral admiatures and proper dosage of sodium silicate activators is studied .The results show that the sodium silicate on good activating effect of mineral admixtures and improve the strength of cement-based material .This method achieves the purpose of protecting environment and saving the economy . Key Words :Mineral admixture ;Sodium silicate ;Activation 粉煤灰和矿粉是比较典型的可以被激发剂激发而 文章在研制出一种矿粉-粉煤灰水泥基材料的基 发生水化、产生强度的胶凝材料。利用粉煤灰、矿粉取 础上41,针对该种水泥基材料,采取对粉煤灰物理细 代混凝土中的部分水泥和细集料,较好地改善混凝土 磨和添加水玻璃化学激发剂结合的方法,进一步通过 的某些性能并节约水泥,一直是人们研究、关注的课 实验研究粉煤灰、矿粉替代水泥胶凝材料制作轻型节 题,而发挥粉煤灰、矿粉的活性或活性成分,却是充分 能混凝土砌块时,水玻璃掺量对粉煤灰、矿粉及水泥组 利用粉煤灰和矿粉作用的关键...