三期临时用电方案

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茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司1目录第一节临时施工用电一、设计依据······················································3二、概况··························································3三、现场勘察及初步设计············································5四、负荷计算······················································5五、变压器及高低压侧母线和开关的选择······························9六、安全用电技术措施··············································9七、安全用电防火措施··············································10八、施工现场临时用电安全规定动····································11九、施工现场安全用电机具操作管理措施······························11十、安全用电十大禁令··············································13第二节临时施工用水一、概况··························································14二、施工用水量计算················································14三、施工机械用水量················································15四、施工现场生活用水量············································15五、生活区生活用水量··············································16六、消防用水量····················································16七、总用水量计算··················································16八、水源选择······················································16九、水泵的选择····················································16茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司2十、供水管道布置··················································17十一、贮水池和化粪池的设计··········································17十二、消防给水······················································17十三、施工临时排水··················································17茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司3第一节临时施工用电一、设计依据设计依据主要包括以下规程规范及资料:(1)《建筑工程施工现场供用电安全规范》GB50194—93;(2)《施工现场临时用电安全技术规范》JGJ46—2005;(3)《低压配电设计规范》GB50054—95;(4)《供配电系统设计规范》GB50052—95;(5)《通用用电设备配电设计规范》GB50055—93;(6)甲方提供的现场电源资料;(7)现场临时用电设备负荷和配置资料;二、概况本工程现场临时用电系统,根据JGJ46-88临时用电规范而设计。根据表内临时用电设备负荷统计,安装容量344.5KW,计算容量256KVA。(将视在负荷换算到有功负荷,功率因数取0.6后,有功负荷为197.46KW。)甲方宜提供320千瓦,方可满足施工用电要求;另自备120KW柴油发电机一台;为确保施工用电可靠,合理节约能源。在供电结构上合理安排。加强管理。茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司4施工现场用电统计如下:序号设备名称规格型号安装功率KW数量合计功率备注1弯铁机GJ7—4052102钢筋调直机GJ—14/45.515.53截铁机GJ5—49—152104交直流焊机BX1—250212425电弧焊机BX3—650—25031506砂浆机HJ—20052107物料提升机HW—2015158插入式振动器PZ—501.5469平板振动机PZ—5021210木工机械组MJ—10433911吊塔桂林长海45+3927412搅拌机J—4005.521113生活办公室施工照明32(一)根据上表,为了简化计算照明用电取施工用电10%,总计视在计算负荷(总需要供电设备容量)P=1.24K1Pe本工程K1取0.6茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司5则:P=1.24*0.6*344.5=256KVA(二)电流计算P·1000256×1000Ij=—————=——————=389A(总开关选400A)3·U1.732×380(三)导线选择采用2(BV-3×120+1×70)架空敷设。三、现场勘察及初步设计(1)、本工程临时施工用电低压路设配总电箱,本电箱只对总配电箱以下的线路及电器开关进行。(2)根据施工现场用电设备布置情况,为了安全,临时电线路敷设采用移动橡套架空电线敷设,在场内临时道路侧边敷设架空干线引至配电箱,由配电箱引至各用电设备开关箱。(3)本供电系统采用TN—5—50HZ380/220三相五线制供电。四、负荷计算(1)、弯铁机查表Kx=0.6COSω=0.6JC=25%tgω=1.021Pjs2=KxPc3=0.6×10=6(KW)Qjs2=Pjs2tgω=6×1.021=6.1(kVar)(2)、截铁机:茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司6查表Kx=0.6COSω=0.6JC=25%tgω=1.021Pjs3=KxPc3=0.6×10=6(KW)Qjs3=Pjs3tgω=6×1.021=6.1(kVar)(3)、钢筋调直机:查表Kx=0.6COSω=0.6JC=25%tgω=1.021Pjs4=KxPc4=0.6×1×5.5=3.3(KW)Qjs4=Pjs4tgω=3.3×1.021=3.37(kVar)(4)、交直流电焊机:查表Kx=0.45COSω=0.50JC=65%tgω=1.732Pc=Ps=εnSncosω=0.65×42×0.5=16.93(KW)Pjs5=KxPc=1×0.70×16.93=11.851(KW)Qjs5=Pjs5tgω=11.851×1.99=23.63(kVar)(5)、电弧焊机:查表Kx=0.45COSω=0.50JC=65%tgω=1.732Pc=Ps=εnSncosω=0.65×150×0.5=48.75(KW)Pjs5=KxPc=1×0.70×48.75=34.125(KW)Qjs5=Pjs5tgω=34.125×1.99=67.9(kVar)(6)、砂浆机:查表Kx=0.65COSω=0.65JC=65%tgω=1.17Pjs7=4KxPe7=4×10×0.65=26(KW)Qjs7=Pjs7tgω=26×1.17=30.42(kVar)(7)、物料提升机:茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司7查表Kx=0.70COSω=0.80tgω=0.75Pjs8=KxPe9=0.80×5=4(KW)Qjs9=Pjs9tgω=4×0.75=3(kVar)(8)、插入式振动器查表Kx=0.7tgω=1.02Pjs9=4KxPe9=4×0.7×1.1=3.08(KW)Qjs9=Pjs9tgω=3.08×1.02=3.14(kVar)(9)、平板式振动器:查表Kx=0.7tgω=1.02Pjs10=4KxPe10=4×0.7×1.1=3.08(KW)Qjs10=Pjs10tgω=3.08×1.02=3.14(kVar)(10)、木工机械组:查表Kx=0.7tgω=0.88Pjs11=KxPe11=0.7×2×(6+4)=14.00(KW)Qjs11=Pjs11tgω=14.00×0.88=12.32(kVar)(11)、塔吊:查表Kx=0.70tgω=1.17Pjs12=KxPe12=0.7×84=58.8(KW)Qjs12=Pjs12tgω=58.8×1.17=68.8(kVar)(12)、搅拌机:查表Kx=0.7COSω=0.7tgω=1.02Pjs13=2KxPe13=2×0.7×5.5=7.7(KW)茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司8Qjs13=Pjs13tgω=7.7×1.02=9.24(kVar)(14)、照明电器:查表Kx=0.80tgω=0Pjs14=KxPe14=2×0.7×15=21.00(KW)Qjs14=Pjs14tgω=20×0=0(kVar)(15)、总负荷计算:干线同期系数取Kx=0.9总有用功率:Pjs=Kx×∑Pjs=0.9×211=189.9(KW)总无用功率:Qjs=Kx×∑Qjs=0.9×204=205(kVar)总功率:Pjs=[Pjs2+Qjs2]0.5=[189.9+205]0.5=197.46(KVA)总线电流计算:Ijs=Sjs×103/(3U)=197.46×103/(3×380)=17.84(A)总功率=197.46(KVA),总线电流=17.84(A)。五、变压器及高低压侧母线和开关的选择施工现场电源为高压10KV进线,故选择10/0.4~0.23KV电压级的变压器。根据计算的总功率,查有关资料选择SL7—180型10/0.4~0.23KV级三相茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司9电力变压器。它的功率为180KV>154.68KVA,能够满足使用要求,其高压侧为10KV同施工现场外的高压架埋地电缆线路的电压级别一致。综合考虑,选总电箱容量180KVA,高压侧开关选用RW10—100/75A型开关;低压侧主开关选用DZ20Y—1250P/3380型自动开关,选择导线截面,BX—3×1.5+1×2.5G20电缆线,搅拌机选择开关为DZ15,因为该电机需加电保护,所以选用DZ20L—400/330型号,选择交流接触器型号为CJ20—40,3×RCLA—60A其容体电流IRD=1.5Ijs=1.5×16.7=30A。漏电保护器DZ15L—60/3。六、安全用电技术措施建立用电施工组织设计和安全用电技术措施的编制,审批并建立相应的技术档案,项目经理部设技术员一名,负责安全技术档案的建立和管理。建立技术交底制度,向专业电工,各类用电人员,介绍用电施工组织设计和安全用电技术措施的总体意图、技术内容、注意事项。并应在技术交底文字资料,执行交底人和被交底人的签名手续,注明交底日期。建立安全监测制度,建立临时用电档案,及时记取有关资料。从用电工程开始,定时对用点施工工程检测。手持式用电设备的保护地线应在移动电缆芯内,其截面必须大于1.5mm2。配电箱开关操作顺序必修为:送电:总箱→分箱→开关箱停电:开关箱→分箱→总箱建立电器维修制度,加强日常和定期维修工作,及时发现和消除隐患,并建立维修工作记录,记载维修时间、地点、设备内容、技术措施、处理茏宇茗都临时施工用电专项方案珠海市建安昌盛工程有限公司10结果、维修人员、验收人员等。七、安全用电防火措施各类电器设备,线路不准超负荷,线路接头要牢固,防止过热或打火短路,发现问题要及时处理。施工现场内禁止使用电炉、碘钨灯,灯与易燃物间要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