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ICS13.030.40J88JB/T8700－1998氧化沟水平轴转刷曝气机技术条件Technicalconditiontorotoraeratorwithhorizontalshaftusedinoxidationditch1998-03-19发布1998-07-01实施中华人民共和国机械工业部发布I前言1范围····················································································································································································································12引用标准·········································································································································································································13定义····················································································································································································································14型号····················································································································································································································25性能参数·········································································································································································································26型式····················································································································································································································47技术要求·········································································································································································································48试验方法·········································································································································································································69检测规则·········································································································································································································810标志、包装、运输和贮存··································································································································································9JB/T8700－1998目次II前言本标准由机械工业部环境保护机械标准化技术委员会提出并归口。本标准起草单位：江苏一环集团公司、机械工业部机械科学研究院。本标准主要起草人：杭浩宗、杭岳忠、杭惠民、张湘帆、王金环。JB/T8700－199811范围本标准规定了氧化沟水平轴转刷曝气机的型式、基本参数、技术要求、试验方法、检验规则、标志、包装、运输和贮存。本标准适用于氧化沟水平轴转刷曝气机（以下简称曝气机）。该设备主要作为氧化沟污水处理系统中的曝气设备。2引用标准下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，所示版本均为有效。所有标准都会被修订，使用本标准的各方应探讨使用下列标准最新版本的可能性。GB221—84钢铁产品牌号表示方法GB700—88碳素结构钢GB/T1184—1996形状和位置公差未注公差值GB/T1220—92不锈钢棒GB4720—84电控设备第一部分：低压电器电控设备GB4942.1—85电机外壳防护分级GB6414—86铸件尺寸公差GB8923—88涂装前钢材表面锈蚀等级和除锈等级GB9439—88灰铸铁件GB11335—89未注公差角度的极限偏差GB/T13306—91标牌GB/T13384—92机电产品包装通用技术条件JB2932—86水处理设备制造技术条件JB/T5936—91工程机械机械加工件通用技术条件JB/T5943—91工程机械焊接通用技术条件3定义本标准采用下列定义。3.1充氧能力（SOIR）标准氧转移速率。指水温为20℃，1atm下，曝气机在单位时间内向溶解氧为零的清水中所充的氧量，即单位时间内单位长度转刷的充氧量。单位为kgO2/（m·h）。机械工业部1998-03-19批准中华人民共和国机械行业标准氧化沟水平轴转刷曝气机技术条件TechnicalconditiontorotoraeratorwithhorizontalshaftusedinoxidationditchJB/T8700－19981998-07-01实施JB/T8700－199823.2动力效率（SAE）又称标准曝气效率。指水温20℃，1atm的溶解氧为零的清水时曝气机消耗单位轴功率所传递的氧量。单位为kgO2/（kW·h）。动力效率与充氧能力的关系：N试验用转刷有效长度充氧能力动力效率×=······················································（1）式中：N——轴功率，kW。3.3单位轴功率W充氧能力与动力效率之比得到单位长度转刷消耗的轴功率。单位为kW/m。3.4混合效率ρ又称功率密度，单位体积混合功率。指每平方米混合液达到不使活性污泥沉积所需的沟内断面平均流速（0.3m/s）而消耗的轴功率。单位为kW/m3。也可定义为，消耗1kW轴功率使沟内混合液达到0.3m/s平均流速的混合液体积（m3/kW）。3.5推动力PC表示使沟内混合液达到0.3m/s平均流速时，每米转刷能推动的混合液体积。单位为m3/m。混合效率与推动力之间存在以下关系：PCW=ρ·······························································································（2）4型号4.1曝气机标记采用设备名称中各组成单词的汉字拼音字母和阿拉伯数字表示：4.2示例曝气机的转刷直径700mm，有效长度2500mm，桥式结构，配单速电机。其标记为：YHG–700/2500–B–Y5性能参数曝气机的性能参数应符合表1的规定。YHGY表示配单速电机，J表示配变速电机，D表示配双速电机B表示桥式结构，若无B则为非桥式结构转刷有效长度，mm转刷直径，mm氧化沟代号JB/T8700－19983表1曝气机的性能参数水平轴转刷曝气机电机减速机型号、规格转刷直径mm转刷有效长度mm型号功率kW型号转速r/min浸深cm充氧能力kgO2/（m·h）动力效率kgO2/（kW·h）氧化沟设计有效水深Hm氧化沟沟宽Bm推动力m3/mYHG–700/1500–B–Y1500Y132S–45.5XW5.5–52.0YHG–700/2500–B–YY132M–470YHG–700/2500–B–J7002500JZT2–51–47.5XW7.5–640~8015~254.0~4.52.0~2.53.0YHG–1000/4500–B–YY180L–422XW22–97025~306.5~8.53.0~3.5YHG–1000/4500–B–JJZT2–61–415XW15–840~8015~254.0~6.02.5~3.05.0YHG–1000/4500–DYD200L–6/418.5/2248/72YHG–1000/4500–Y4500Y180L–422WG22–20725.5＞155YHG–1000/6000–DYD225S–6/422/2848/72YHG–1000/6000–Y6000Y200L–430WG30–20727.0YHG–1000/7500–DYD225M–6/426/3248/72YHG–1000/7500–Y7500Y225S–437WG37–20728.5YHG–1000/9000–DYD250M–6/432/4248/72YHG–1000/9000–Y10009000Y225M–445WG45–207225~306.5~8.52.0~2.53.0~3.510.0＞500JB/T8700－199846型式曝气机由电动机、减速装置、柔性联轴器和转刷主体等组成。其基本结构型式见图1和图2。1—电动机；2—减速装置；3—柔性联轴器；4—转刷主体；5—氧化沟池壁图1YHG型水平轴转刷曝气机示意图1—V带；2—减速装置；3—联轴器；4—电动机；5—机架；6—转刷；7—轴承座图2桥式结构的曝气机示意图7技术要求7.1曝气机应符合本标准的规定，并按照经规定程序批准的图样和技术文件制造。7.2整机性能7.2.1整机运行时应灵活，并无异常声响。7.2.2转刷主轴运转平稳，径向跳动公差应符合GB/T1184中11级精度要求，轴向窜动应不大于0.5JB/T8700－19985mm。7.2.3曝气机制造应符合JB2932的有关规定。7.2.4外购件应符合国家有关标准规定，并且有产品合格证。7.2.5轴承座与减速机要安装在同一水平面上，两轴的同轴度公差应符合GB/T1184中7级精度要求。7.2.6曝气机的叶片浸深、转速、充氧能力、轴功率、动力效率和推动力应符合表1的规定。7.2.7电控设备应有良好的接地装置，并有明显的接地标