JBT88572000

ICS23.080J71JB/T8857－2000离心式潜污泵Centrifugalsubmersiblesewagepumps2000-03-30发布2000-10-01实施国家机械工业局发布I前言1范围····················································································································································································································12引用标准·········································································································································································································13型式与基本参数··························································································································································································14技术要求·········································································································································································································25试验方法·········································································································································································································76检验规则·········································································································································································································87保证期···············································································································································································································98标志、包装、运输及贮存·····································································································································································99成套范围·········································································································································································································9附录A（标准的附录）离心式潜污泵的泵效率和机组效率·······························································································10附录B（标准的附录）离心式潜污泵数据单······························································································································12附录C（提示的附录）离心式潜污泵基本参数·························································································································14JB/T8857－2000目次II前言本标准是对JB/T8857—1999（ZBJ71017—89）《离心式污水潜水电泵型式与基本参数》、JB5803—91《污水污物潜水电泵技术条件》进行的修订。本标准与JB/T8857—1999、JB5803—91相比，主要技术差异如下：——对产品的基本参数进行了较大调整，加大了性能范围和电动机的额定功率范围以适应市场需求，允许根据标准规定发展符合实际使用要求的产品；对产品的型号表示方法做了改变；——拓宽了产品的应用领域，取消了泵输送液体pH值的限制和潜入液下深度的限制；——对产品的技术条件做了适当调整，增加了结构设计等方面的内容，取消了有关单相电动机的技术要求，去掉了一些没有必要或无法考核的技术要求（如电动机的振动、噪声、昀小转矩等方面的规定）；——离心式潜污泵是泵与电动机共轴组成的整体，因此本标准中规定了机组效率的考核（代替原标准中泵效率的考核）和电动机输入功率的测量（代替原标准中轴功率的测量）；——本标准将泵效率的规定列入附录A（标准的附录），并采用了新的泵效率曲线；将泵的基本参数和性能范围列为附录C（提示的附录）；增加了离心式潜污泵数据单[附录B（标准的附录）]。本标准自实施之日起代替JB/T8857—1999、JB5803—91。本标准的附录A、附录B都是标准的附录。本标准的附录C是提示的附录。本标准由全国泵标准化技术委员会提出并归口。本标准起草单位：沈阳水泵研究所、石家庄杂质泵研究所、江苏亚太泵业集团公司、南京蓝深制泵集团股份有限公司、大连耐酸泵厂。本标准主要起草人：韦国群、常庆昌、周庆明、石先平、张孝风。JB/T8857－200011范围本标准规定了离心式潜污泵（以下简称泵）的型式与基本参数、技术要求、试验方法和检验规则等。本标准适用于输送液体中含有非磨蚀性固体颗粒、纤维、污杂物（如城市生活污水、化学工业废水等）的泵。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昀新版本的可能性。GB191—1990包装储运图示标志GB/T755—1987旋转电机基本技术要求GB/T985—1988气焊、手工电弧焊及气体保护焊焊缝坡口的基本形式与尺寸GB/T986—1988埋弧焊焊缝坡口的基本形式与尺寸GB1971—1980电机线端标志与旋转方向GB/T3216—1989离心泵、混流泵、轴流泵和旋涡泵试验方法GB/T4942.1—1985电机外壳防护等级GB/T9239—1988刚性转子平衡品质许用不平衡的确定GB/T12785—1991潜水电泵试验方法GB/T13306—1991标牌GB/T13384—1992机电产品包装通用技术条件JB/T4297—1992泵产品涂漆技术条件JB/T6879—1993离心泵铸件过流部位尺寸公差JB/T6880.1—1993泵用灰铸铁件JB/T6880.2—1993泵用铸钢件JB/T8687—1998泵类产品抽样检查3型式与基本参数3.1型式3.1.1泵为单级、单吸，立式，可长期潜入液下工作。泵与电动机共轴，电动机为三相异步电动机。3.1.2按泵所输送的液体的排出方式，分为三种基本型式：a）外装式：液体直接从泵体外接排出管排出，如图1；国家机械工业局2000-03-30批准中华人民共和国机械行业标准离心式潜污泵CentrifugalsubmersiblesewagepumpsJB/T8857－2000代替JB/T8857—1999JB5803—912000-10-01实施JB/T8857－20002b）内装式：液体由机组外壳和电动机外壳之间的环形流道排出，如图2；c）半内装式：液体由与电动机外壳连接的管道中排出，如图3。图1外装式图2内装式图3半内装式注：图1、图2、图3均为示意图，仅表达泵所输送的液体的排出方式。3.2型号表示方法示例：排出口直径为200mm，规定点流量为400m3/h，规定点扬程为20m，电动机额定功率为45kW的离心式潜污泵，表示为：200QW400–20–453.3旋转方向从泵的电动机端看，叶轮顺时针方向旋转。3.4基本参数基本参数推荐按附录C（提示的附录）。若用户对泵的基本参数有不同于附录C的要求时，按订货单或数据单[附录B（标准的附录）]的规定执行。4技术要求4.1泵的使用环境条件泵在下列使用环境条件下应能正常运行：QW电动机额定功率，kW规定点扬程，m规定点流量，m3/h离心式潜污泵排出口直径，mmJB/T8857－20003a）海拔一般不超过1000m；b）所输送的介质温度一般不超过40℃；c）介质中固体颗粒含量体积比不超过4%；d）介质中固体颗粒昀大粒径符合产品使用说明书的规定，但不大于排出口直径的50%。若用户对泵的使用环境条件有不同于以上要求时，按订货单的规定执行。4.2泵性能4.2.1泵性能参数应符合3.4的规定。在常温清水中，泵的流量为规定值时，机组效率应符合附录C的规定。4.2.2流量、扬程、机组效率的允差应符合GB/T3216—1989中C级的规定。4.2.3制造厂应确定泵的容许工作范围，并绘制出扬程、机组效率、电动机输入功率与流量的关系曲线。4.3电动机4.3.1电动机外壳防护等级应符合GB/T4942.1—1985中IPX8的规定。4.3.2电动机的定额是以连续工作制（S1）为基准的连续定额。4.3.3泵在正常工作条件下运行时，在0.7~1.2倍规定流量范围内，电动机输入功率应不超过其输入功率限值；当用常温清水进行试验时，电动机输入功率应不超过其输入功率限值。当电动机额定功率小于或等于45kW时，其输入功率限值按式（1）计算：Pgr,max=P/[ηmot–0.15（1–ηmot）/（22）]………………………（1）当电动机额定功率大于45kW时，其输入功率限值按式（2）计算：Pgr,max=P/[ηmot–0.10（1–ηmot）/（22）]………………………（2）式中：Pgr,max——电动机的输入功率限值，kW；P——电动机的额定功率，kW；ηmot——在功率、电压、频率为额定值时，电动机效率的保证值，%。4.3.4泵在运行期间，电源电压和频率与额定值的偏差及其对电动机性能和温升限值的影响应符合GB/T755的规定。4.3.5电动机的电气性能4.3.5.1在功率、电压、频