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Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. According to the requirements of Document JIANBIAO [2014] No.189 issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China - Notice on printing and distributing the development and revision plan on engineering construction standards and codes in 2015, the drafting group of standard complied this standard through the extensive investigation and study, careful summarization of practical experience and reference to relevant international and foreign advanced standards and on the basis of widely soliciting for opinions. The main technical contents of this standard are: 1. General provisions; 2. Terms and symbols; 3. Basic requirements; 4. Engineering design; 5. Construction and acceptance; 6. Operation and maintenance. The Ministry of Housing and Urban-Rural Development of the People's Republic of China is in charge of the administration of this standard, and Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. is responsible for the explanation of specific technical contents. During the process of implementing this standard, you are kindly requested to send your opinions and advice (if any) to Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. (Address: No.901, North Zhongshan No.2 Road, Zhongshan District, Shanghai, 200092, China). Contents 1 General provisions 1 2 Terms and symbols 2 2.1 Terms 2 2.2 Symbols 2 3 Basic requirements 3 4 Engineering design 4 4.1 General requirements 4 4.2 Site selection and general layout 5 4.3 Process design 6 4.4 Structural design 11 4.5 Electrical and control instruments 13 4.6 Design of auxiliary facilities 16 5 Construction and acceptance 18 5.1 Construction 18 5.2 Acceptance 21 6 Operation and maintenance 23 6.1 Operation 23 6.2 Maintenance 25 Explanation of wording in this standard 27 List of quoted standards 28 1 General provisions 1.0.1 This standard is formulated with a view to making the integrated prefabricated pumping station engineering safe, reliable, advanced in technology, economical and reasonable, and convenient in operation and management. 1.0.2 This standard is applicable to the design, construction, acceptance, operation and maintenance of integrated prefabricated pumping station engineering in the constructed, extended and renovated urban water supply and drainage engineering. 1.0.3 In addition to this standard, the design, construction, acceptance, operation and maintenance of integrated prefabricated pumping station engineering shall also comply with those stipulated in the current relevant standards of the nation. 2 Terms and symbols 2.1 Terms 2.1.1 integrated prefabricated pumping station pumping station of which the shaft, water pump, screen, pipeline, valve, control system, ventilation system and other main components are integrated into a whole in the factory and which is pre-installed and tested before leaving the factory and then is transported to the site for installation 2.1.2 wet well integrated prefabricated pumping station integrated prefabricated pumping station of which the water pump and inlet well are integrated in the same shaft, with the water pump installed in a wet mode 2.1.3 dry well integrated prefabricated pumping station integrated prefabricated pumping station which consists of an independent dry area or integrates the dry area and wet area in the same shaft, with the water pump installed in a dry mode 2.1.4 basket screen basket screen which is equipped with guide rods and lifting chains and is automatically coupled to the water inlet pipeline 2.1.5 grinder screen which is composed of an independent cutting mechanism or the cutting machine combined with the rotating screen 2.2 Symbols F——the total buoyancy of the main body, the backfilled soil above the baseplate and the baseplate of integrated prefabricated pumping station; KS——the design resistance coefficient of stability; QP——the design flow of the largest pump in the integrated prefabricated pumping station; VEff——the effective volume of sump of integrated prefabricated pumping station; W——the total gravity of the main body, the backfilled soil above the baseplate and the baseplate of integrated prefabricated pumping station; Zmax——the maximum number of starts and stops of water pump per hour. 3 Basic requirements 3.0.1 Integrated prefabricated pumping stations may be divided into water supply integrated prefabricated pumping stations and drainage integrated prefabricated pumping stations depending on their uses, and into dry well integrated prefabricated pumping stations and wet well integrated prefabricated pumping stations depending on their installation forms. 3.0.2 The main body of integrated prefabricated pumping station shall be composed of shaft and internal facilities. It shall be pre-installed and tested in the factory in accordance with the principles of safety and reliability, and site installation time and minimum workload. 3.0.3 As for the integrated prefabricated pumping station, the ambient temperature at the use site of its main body should not be lower than -20℃, that surrounding the use site of its control cabinet should not be lower than -10℃~40℃, and the relative humidity should be 25%~85%. When the integrated prefabricated pumping station is set beyond the above environmental conditions, proper anti-freezing, heat dissipation and ventilation measures shall be taken. 3.0.4 The conveying medium of integrated prefabricated pumping station shall meet the following requirements: 1 The temperature shall be 0℃~40℃; 2 The pH value shall be 4~10; 3 The maximum particle diameter in the conveying medium of the drainage pump shall be smaller than the diameter of the selected pump. 3.0.5 When the conveying medium cannot meet the requirements of 3.0.4 hereof, corresponding measures shall be taken. 4 Engineering design 4.1 General requirements 4.1.1 The material of the main body of integrated prefabricated pumping station shall meet the following requirements: 1 The shaft is made of lightweight, high-strength and corrosion-resistant materials such as glass fiber reinforced plastic or high-density polyethylene; 2 The pump overflow parts, pipelines and other parts in direct contact with the conveying medium of the integrated prefabricated pumping station for conveying domestic drinking water shall meet the relevant requirements of the current national standard GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system; 3 The internal pipelines and supporting accessories of the drainage integrated prefabricated pumping station should be made of stainless steel, polyethylene or other corrosion-resistant materials. 4.1.2 The top cover design of the main body of integrated prefabricated pumping station shall meet the following requirements: 1 The design elevation of the top cover shall meet the flood control requirements, and the bearing capacity of the top cover shall be calculated according to the actual stress conditions, taking into account wind load, snow load, flooding load, temperature load and other variable loads; 2 When the integrated prefabricated pumping station is set in the green belt, the elevation and layout of the top cover shall be considered in combination with the requirements of landscape, greening and other disciplines or those of sponge city construction; 3 When the integrated prefabricated pumping station is set in roads, squares and other areas, its top cover, access cover and base shall meet the requirements of bearing capacity and stability corresponding to the road level, and the top cover and access cover shall be equal to the pavement and proper waterproof measures shall be taken. 4.1.3 For wet well integrated prefabricated pumping station with a diameter greater than 3m, a deflector shall be set at its water inlet 4.1.4 In the wet well integrated prefabricated pumping station, the pump pit shall be of optimized flow design. 4.1.5 The wet well drainage integrated prefabricated pumping station should have the functions of automatically emptying the sump regularly and preventing the water pump from sticking. 4.2 Site selection and general layout 4.2.1 The integrated prefabricated pumping station engineering shall be planned uniformly. If there are long-term planning requirements, long-term interfaces shall be reserved in the near-term engineering. 4.2.2 The integrated prefabricated pumping station should be located at the natural foundation with solid rock and soil and good impermeability. Where the natural foundation is unsatisfactory, corresponding foundation treatment measures shall be taken or artificial foundation shall be adopted. 4.2.3 The distance between the integrated prefabricated pumping station and residential buildings and public buildings shall be reasonably determined according to the requirements of planning, fire protection and environmental protection departments, and the integrated prefabricated pumping station shall be in harmony with its surroundings. 4.2.4 The site of water supply integrated prefabricated pumping station and drainage integrated prefabricated pumping station shall meet the following requirements: 1 The flood control standard of water intake integrated prefabricated pumping station shall not be inferior to the urban flood control standard, and the design flood return period shall not be less than 100 years. The site of water intake integrated prefabricated pumping station shall be located in the river section with good water quality, close to the mainstream, stable riverbed, good geological conditions, upstream of industrial and mining areas and convenient water intake conditions. 2 The flood control standard of water supply and pressurization integrated prefabricated pumping station shall not be inferior to the urban flood control standard, and an appropriate safety margin shall be reserved. Site selection shall conform to the overall urban planning and relevant special planning, and shall take into account factors such as system layout, flood threat, wastewater discharge conditions, engineering geological conditions, sanitary environment, as well as construction, operation and maintenance comprehensively. 3 The site of drainage integrated prefabricated pumping station shall meet the requirements of urban drainage and waterlogging prevention, and shall be determined upon technical and economic comparison according to the requirements of drainage design. 1 General provisions 2 Terms and symbols 2.1 Terms 2.2 Symbols 3 Basic requirements 4 Engineering design 4.1 General requirements 4.2 Site selection and general layout 4.3 Process design 4.4 Structural design 4.5 Electrical and control instruments 4.6 Design of auxiliary facilities 5 Construction and acceptance 5.1 Construction 5.2 Acceptance 6 Operation and maintenance 6.1 Operation 6.2 Maintenance Explanation of wording in this standard List of quoted standards 1 总则 1.0.1 为使一体化预制泵站工程做到安全可靠、技术先进、经济合理和运行管理方便,制定本标准。 1.0.2 本标准适用于新建、扩建和改建的城镇给水、排水工程中一体化预制泵站工程的设计、施工、验收、运行和维护。 1.0.3 一体化预制泵站工程的设计、施工、验收、运行和维护,除应符合本标准外,尚应符合国家现行有关标准的规定。 2术语和符号 2.1术语 2. 1. 1 一体化预制泵站 integrated prefabricated pumping station 在工厂内将井筒、水泵、格栅、管迫、阀门、控制系统和通风系统等主体部件集成为一体,并在出厂前进行预装和测试后,运至现场安装的泵站。 2.1.2 湿式一体化预制泵站 wet well integrated prefabricated pumping station 将水泵和进水井集成在同一个井筒内,水泵采用湿式安装的一体化预制泵站。 2.1.3 干式一体化预制泵站 dry well integrated prefabricated pumping station 由一个独立干区构成或者将干区、湿区集成在同一个井筒内,水泵采用干式安装的一体化预制泵站。 2.1.4 提篮式格栅 basket screen 配备导杆和提升链,自动耦合在进水管路上的格栅篮。 2.1.5 粉碎式格栅 grinder 由独立的切割机构成或将切割机与旋转格栅组合成一体的格栅。 2.2 符号 F——一体化预制泵站主体、底板以上的回填土和底板总浮力; Ks——设计稳定性抗力系数; QP——一体化预制泵站最大一台泵的设计流量; VEff——一体化预制泵站集水池有效容积; W——一体化预制泵站主体、底板以上的回填土和底板总重力; Zmax——水泵每小时最大启停次数。 3基本规定 3.0.1 一体化预制泵站根据用途可分为给水一体化预制泵站和排水一体化预制泵站,根据水泵安装形式可分为干式一体化预制泵站和湿式一体化预制泵站。 3.0.2 一体化预制泵站主体应由井筒和内部设施组成。出厂前应遵循安全可靠、现场安装时间和工作量最小化的原则进行预装和测试。 3.0.3 一体化预制泵站主体使用场所的环境温度不宜低于-20℃;控制柜使和场所的周围环境温度宜为-10℃〜40℃,相对湿度为25%〜85%。当超出上述环境条件设置一体化预制泵站时,应采取防冻、散热和通风措施。 3.0.4 一体化预制泵站的输送介质应符合下列规定: 1温度应为0℃〜40℃; 2pH值应为4〜10; 3排水泵输送介质中的最大颗粒直径应小于所选配水泵的通径。 3.0.5 当输送介质不能满足本标准第3.0.4条要求时,应采取相应的措施。 4工程设计 4.1一般规定 4.1.1 一体化预制泵站主体的材质应符合下列规定: 1 井筒采取玻璃钢或高密度聚乙烯等质量轻、强度高和耐腐蚀的材料; 2输送生活饮用水的一体化预制泵站水泵过流部件以及管路和其他与输送介质直接接触的部分应符合现行国家标准《生活饮用水输配水设备及防护材料的安全性评价标准》GB/T17219的有关规定; 3排水一体化预制泵站内部管道和配套附件宜采用不锈钢或聚乙烯等耐腐蚀材料。 4.1.2 一体化预制泵站主体顶盖设计应符合下列规定: 1顶盖设计标高应满足防洪要求,顶盖承载力府根据实际受力条件计算,并考虑风载、雪载、水淹荷载、温度荷载及其他可变荷载; 2当一体化预制泵站设置于绿化带内时,应结合景观、绿化等专业或海绵城市建设要求统筹考虑顶盖的标高和布置。 3一体化预制泵站设置于道路和广场等区域内时,其顶盖、检修盖板和基座应满足道路级别对应的承载力和稳定性要求,顶盖和检修盖板应与路面持平且应采取防水措施。 4.1.3直径大于3m的湿式一体化预制泵站,应在一体化预制泵站进水口设置导流板。 4.1.4湿式一体化预制泵站中,泵坑应采用流态优化的设计。 4.1.5湿式排水一体化预制泵站宜具备定期自动排空集水池和水泵防卡滞功能。 4.2 站址选择和总体布置 4.2.1 一体化预制泵站工程应统一规划。有远期规划要求的,近期工程应预留远期接口。 4.2.2 一体化预制泵站站址宜选择在岩土坚实、抗渗性能良好的天然地基处。当天然地基不满足要求时,应采取相应的地基处理措施或采用人工地基。 4.2.3 一体化预制泵站与居住房屋、公共建筑物的距离,应结合规划、消防和环保部门的要求合理确定,且一体化预制泵站应与周围环境协调。 4.2.4给水一体化预制泵站和排水一体化预制泵站站址应符合下列规定: 1 取水一体化预制泵站的防洪标准不应低于城市防洪标准,且设计洪水重现期不应低于100年。取水一体化预制泵站站址应位于水质较好、靠近主流、河床稳定、地质条件良好、工矿区上游、取水方便的河段。 2 给水增压一体化预制泵站的防洪标准不应低于城市防洪标准,并应留有适当的安全裕度。站址的选择应符合城镇总体规划和相关专项规划,同时应综合考虑系统布局、洪水威胁、废水排除条件、工程地质条件、卫生环境、施工运行和维护等因素。 3 排水一体化预制泵站站址应满足城镇排水防涝要求,并应根据排水设计要求,经技术经济比较后确定。 4.2.5 依据一体化预制泵站设计规模、系统条件和现场情况,一体化预制泵站可选择多井筒组合的形式。 4.3 工艺设计 I工艺平面布置 4.3.1 一体化预制泵站工艺平面布局应根据一体化预制泵站类型、进出水条件、工艺条件等合理布置,应保证一体化预制泵站整体流态良好,并宜采用计算机校模型对一体化预制泵站整体的流态进行分析。 4.3.2 一体化预制泵站井筒内的工艺平面布置应满足主要设备和管路的安装、运行操作和起吊维护的要求,可不设置维修空间。干式一体化预制泵站应考虑散热,并应在外筒底部设置集水坑和排水泵。 Ⅱ 集水池 4.3.3 一体化预制泵站集水池水位设计应符合下列规定: 1 对于采用轴流泵、混流泵或潜水离心泵的湿式一体化预制泵站,一体化预制泵站集水池最低水位应满足配套水泵所需最小淹没深度的要求。当无法满足要求时,应进行针对性设计,消除气蚀和水泵干转风险,并可采用计算流体动力学(CFD)模拟等方法辅助设计。 2 对于采用卧式或立式离心泵的干式一体化预制泵站,一体化预制泵站前端集水池的最低水位应满足水泵自灌的要求。当无法满足要求时,应设置真空引水系统,最大排气时间不定大于 5min。 3 雨水一体化预制泵站和合流一体化预制泵站集水池的设计最高水位,应与进水管管顶相平。当设计进水管道为压力管时,集水池的设计最高水位可高于进水管管顶,但不得造成管道上游地面冒水。污水一体化预制泵站集水池的设计最高水位,应按进水管充满度计算。 4 多井筒设计的并联一体化预制泵站所有井筒之间应连通。 4.3.4给水一体化预制泵站的集水池有效容积应根据一体化预制泵站前端供水曲线和后端用水曲线及所需的消防、事故用水量综合确定,同时应满足配套水泵的启停次数的要求和水质的预处理要求。 4.3.5排水一体化预制泵站集水池的有效容积应根据水泵设计流量和每小时最大启停次数确定,并应按下式计算: (4.3.5) 式中:VEff——一体化预制泵站集水池有效容积(m3); QP——一体化预制泵站最大一台泵的设计流量(m3/h); Zmax——水泵每小时最大启停次数(h-1)。 4.3.6 当一体化预制泵站主体集水池有效容积不能满足计算集水池容积时,应另设分离式集水池。 Ⅲ 水泵和格栅 4.3.7水泵的选型应符合下列规定: 1 水泵宜选用相同型号; 2 当流量和扬程变化较大时,宜采用变频调速装置; 3 水泵设计工况点应在水泵最高效率区内,在最大与最小流量时,水泵应能高效、安全、稳定运行。 4.3.8 一体化预制泵站配备的水泵应符合下列规定: 1 水泵在设计负荷范围内应无振动和气蚀现象; 2 一体化预制泵站配备的潜水泵应符合现行国家标准《污水污物潜水电泵》GB/T 24674的有关规定; 3 一体化预制泵站配套的干式离心泵应符合现行国家标准《离心泵技术条件(Ⅲ类)》GB/T5657的有关规定。 4.3.9 潜水电机应符合下列规定: 1 绝缘等级不应低于F级,温升不应低于B级; 2 防护等级不应低于IP68。 4.3.10干式电机应符合下列规定: 1 绝缘等级不应低于F级,温升不应低于B级; 2 防护等级不应低于IP54。 4.3.11当潜水自耦安装的潜水离心泵和自耦底座采用金属对金属的连接时,宜采用橡胶圈密封。 4.3.12 当进水含有的固体杂质可能堵塞水泵和后继管路时,应设置格栅。格栅的选型应符合下列规定: 1 格栅设计流量不应小于一体化预制泵站设计流量,过栅水头损失不宜大于0.5m; 2 当一体化预制泵站进水杂质较少时,宜设置提篮式格栅; 3 当一体化预制泵站进水杂质较多时,宜设置粉碎式格栅。 4.3.13提篮式格栅的设计应符合下列规定: 1 格栅应耦合在进水管法兰面上,并应配套导杆和提升链; 2 格栅和挡水板等消能装置应分开设置; 3 格栅间距不宜小于40mm,且不宜大于后继水泵过流通径; 4 格栅应能手动提升,倾倒栅渣; 5 提篮式格栅的材质应采用不锈钢304系列及以上材质。 4.3.14 粉碎式格栅的设计应符合下列规定: 1 格栅可耦合在进水管法兰面或安装在预制格栅井内,格栅井应满足格栅安装和后继水泵配水要求; 2 应设置备用粉碎式格栅; 3 当进水管道可能出现雍水时,可采用配套的溢流格栅,并应增加检修孔、配套导杆、提升链、进水渠和支撑附件; 4 格栅支撑框架的强度应满足机械和液压负荷要求; 5 湿式安装的粉碎式格栅应配套防护等级IP68的潜水电机,并应具备防缠绕、防越流功能。 4.3.15设置于污水一体化预制泵站的粉碎式格栅,应具备连续运行的能力。设置于雨水一体化预制泵站的粉碎式格栅,宜采用液位计控制启停。 Ⅳ 管路系统 4.3.16 一体化预制泵站管路系统管材、管件和阀门的选型和连接方式,应根据输送介质和使用环境确定。 4.3.17 一体化预制泵站的进出水管道和外部管道,应采用柔性连接。 4.3.18 干式安装的水泵进水管应配置检修阀,宜配置压力真空表。检修阀可安装在一体化预制泵站内部或一体化预制泵站外的阀门井内。 4.3.19离心泵的出水管应配置止回阀和检修阀。宜配置压力表。止回阀和检修阀可安装在一体化预制泵站内部或一体化预制泵站外的阀门井内。 4..3.20给水系统的管道增压一体化预制泵站,水泵进水管应设置检修阀,进水主管上应安装压力传感器和双向排气阀。 4.3.21向高地输水或长距离输水一体化预制泵站,水泵设有止回阀或底阀时,应进行启停泵水锤和弥合水锤压力计算。当计算所得的水锤压力值超过管道试验压力值时,应采取消除水锤的措施。 Ⅴ 其他附属设施 4.3.22 一体化预制泵站主体顶盖应留有检修盖板,检修盖板应具备限位安全锁、防坠落和防盗的功能,并应留有设备检修孔。检修孔的尺寸、个数和位置应根据一体化预制泵站的提升设备确 定,检修孔直径不宜小于800mm。 4.3.23 井筒外部应根据使用条件和起吊能力设置吊耳,且玻璃钢材质一体化预制泵站吊耳不应少于4个,高强度聚乙烯一体化预制泵站吊耳不应少于2个,其强度应满足一体化预制泵站吊装的需要。 4.3.24水泵的提升装置应符合下列规定: 1 湿式一体化预制泵站应采用不锈钢304系列及以上材质的导杆、提升链等提升装置,且最大允许提升重量不应小于单台设备最大提升重量的1.5倍; 2 干式一体化预制泵站可不设置提升装置,但一体化预制泵站操作平台和检修孔开孔尺寸应确保一体化预制泵站外提升设备能顺利完成提升作业。 4.3.25湿式一体化预制泵站主体配套操作平台宜采用不锈钢、热镀锌碳钢、铝合金或玻璃钢材料,操作平台应进行承载力测试,最大设计载荷应大于2kN/m2,并应能承载一体化预制泵站主体最重设备重量的1.5倍。干式一体化预制泵站不设置操作平台。 4.3.26 一体化预制泵站操作平台的设置应满足人员操作、检修和设备吊装的要求,并应符合下列规定: 1 湿式一体化预制泵站操作平台宜设置于检修阀以下0.5m〜1.0m,并应位于进水管管顶和最高水位以上; 2干式一体化预制泵站可根据管路布置、阀门设置、水泵排布等按实际需要设置操作平台。 4.3.27爬梯的材质宜采用铝合金。当一体化预制泵站内环境腐蚀性较强时,宜采用玻璃钢等防腐蚀材质。爬梯应符合现行国家标准《梯子第2部分:要求、试验和标志》GB/T 17889.2的有关规定。 4.4结构设计 4.4.1 一体化预制泵站主体结构的设计使用年限不应低于50年。 4.4.2 一体化预制泵站主体结构的顶盖、侧壁和底座应满足承载能力极限状态和正常使用极限状态的验算要求。 4.4.3 一体化预制泵站抗震设计应符合现行国家标准《泵站设计规范》GB50265的有关规定。 4.4.4导流板宜采用和井筒相同的材质,位和井筒牢固连接,并应根据最大设计流量、流速、导流板的材质、形状和安装位置进行强度校核。 4.4.5 一体化预制泵站底座的设计应符合下列规定: 1 质量不应小于水泵总质量的1.5倍; 2 当质量达不到要求时,应与底板钢筋连接并进行二次浇筑; 3 应设置防振构件。 4.4.6 一体化预制泵站主体底板的设计应符合下列规定: 1 底板应采用钢筋混凝土结构; 2 一体化预制泵站主体底板的尺寸应满足抗浮和结构强度要求,并应按下式进行抗浮计算: (4.4.6) 式中:W——一体化预制泵站主体、底板以上的回填土和底板总重力(N); KS——设计稳定性抗力系数,取1.05; F——一体化预制泵站主体、底板以上的回填土和底板总浮力(N)。 3一体化预制泵站主体的底座和钢筋混凝土底板应牢固连接,连接形式应根据抗浮计算和水泵稳定运行要求确定; 4多井筒一体化预制泵站主体和一体化预制泵站前后端构筑物宜采用同一个底板。 4.4.7 一体化预制泵站稳定分析、地基计算及处理应符合现行国家标准《泵站设计规范》GB50265的有关规定。 4.4.8 一体化预制泵站基坑支护设计应综合考虑工程地质与水文地质条件、基础类型、基坑开挖深度、降排水条件、周边环境对基坑侧壁位移的要求、基坑周边荷载、施工季节、支护结构使用期限等因素,并应符合现行行业标准《建筑基坑支护技术规程》JGJ120的有关规定。 4.5 电气和控制仪表 4.5.1 一体化预制泵站的负荷等级应根据一体化预制泵站的用途和规模确定,并应符合现行国家标准《供配电系统设计规范》GB50052的有关规定。 4.5.2 一体化预制泵站采用低压供电电源时,宜为220V/380V,三相四线制,系统接地形式应为TN-S制。总配电箱(柜)引出的配电线路的中性线N线和保护线PE线应分开。接地装置宜采用共用接地装置,接地电阻不应大于1Ω。 4.5.3泵站采用10kV或其他等级高压供电电源时,泵站的变配电系统宜设置在户外预装式变电站内,并应符合现行国家标准《高压/低压预装式变电站》GB17467的有关规定。 4.5.4水泵及户外用电设备应安装剩余电流漏电保护装置,或采取相应保护措施。 4.5.5控制设备的电源端,应安装电涌保护器。电涌保护器的接地端应与配电箱的保护接地线相连接。配电箱的接地线应就近连接到等电位接地端子或接地干线上。电涌保护器的参数应符合现行国家标准《建筑物电子信息系统防雷技术规范》GB50343 的有关规定。 4.5.6 一体化预制泵站电机的电压偏差不宜超过标称电压的±5%。 4.5.7 一体化预制泵站电机应校核电机启动压降,并应根据校核结果采用软启、变频或其他降压启动措施启动。 4.5.8 一体化预制泵站的电气主接线、主电动机及主要电气设备选择、无功功率补偿、机组启动、室外电缆敷设、继电保护及安全自动装置、自动控制和信号系统、测量表计装置、通信等应符合现行国家标准《泵站设计规范》GB50265的有关规定。 4.5.9 一体化预制泵站控制柜和一体化预制泵站配套设备的电机外壳均应做等电位联结,应就近连接到等电位联结端子板上或接地干线上。 4.5.10控制系统元器件应采用工业级设备,应具备防尘、防潮、防霉的能力,并应符合相应的电磁兼容性要求。 4.5.11 一体化预制泵站的控制系统应符合下列规定: 1 应具备自动巡检、故障诊断、报警和自动保护等功能; 2 控制柜操作面板上应设置手动/自动切换开关,并应在控制系统发生故障时可由操作人员现场启泵; 3 对于可恢复的故障,应具备自动或手动解除报警、恢复正常运行的功能; 4 宜设置通信接口。 4.5.12一体化预制泵站控制设备的显示参数,宜包括电流、电压、能耗、泵送流量、水泵运行和故障,配套变频器一体化预制泵站的显示参数尚应包括水泵转速和电流。根据管路形式和实际需要,宜增加下列参数: 1 重力流管道进水的一体化预制泵站:集水池实际液位,启停液位,超低、超高和溢流液位等; 2 压力流管道进水的一体化预制泵站:进出口压力、设定压力、水泵干转保护、出口超低和超高压力等。 4.5.13控制柜可安装在井筒内、井筒外户内和井筒外户外,并应符合下列规定: 1 当控制柜安装在井筒内部时,柜体材质宜采用不锈钢,防护等级应为IP54及以上; 2 井筒外户内型控制柜,柜体材质宜采用碳钢喷塑,防护等级应为IP42及以上; 3 井筒外户外型控制柜,应采用双层门结构,柜体材质宜采用不锈钢,电缆安装方式宜采用下进下出,防护等级应为IP54及以上。 4.5.14 一体化预制泵站内液位的实时监测宜采用静压式液位传感器、浮球开关或超声波液位计等液位控制设备,并应反馈到控制系统。液位控制器或变送器,应方便维修人员在一体化预制泵站地面或操作平台拆卸维修。 4.5.15静压式液位传感器应安装在传感器保护钢管内,传感器头部宜距一体化预制泵站池底200mm,传感器宜凸出保护钢管lcm〜3cm。 4.5.16液位传感器电缆应采取防松脱的措施,并成设置接地屏蔽线。 4.5.17 排水一体化预制泵站应配备移动式硫化氢(H2S)检测仪和甲烷(CH4)检测仪。 4.6配套设施设计 Ⅰ通风、保温和除臭设施 4.6.1 一体化预制泵站主体的通风应符合下列规定: 1 湿式一体化预制泵站采用自然通风时,通风管管径不应小于100mm。可能有易燃易爆和有毒有害气体产生的湿式一体化预制泵站应配备机械通风。 2 干式一体化预制泵站应采用轴流风机等机械通风,通风量应满足一体化预制泵站内设备的散热要求。井筒内宜设置温控和报警装置。 3 湿式带维修间的一体化预制泵站,通风管的出口应设置于维修间外部。通风口的设计应考虑防洪、防虫和防异物进入,并应设置警示标志注明严禁烟火。 4.6.2 一体化预制泵站的管路系统应设置于所处地区冻土线以下,严寒及寒冷地区应对冻土线以上部分井筒和顶盖采取保温措施。 4.6.3污水和合流一体化预制泵站宜设置除臭装置,并应根据当地环境评价要求处理达标。 Ⅱ 设备间 4.6.4 一体化预制泵站主体上可根据需要设置设备间。设备间的设计,应满足井筒内主要设备起吊和维修、控制柜的安装和散热要求,并应根据设备的最大尺寸和起吊设备的要求确定设备间的高度和出入口尺寸。 4.6.5设备间宜采用具有保温隔热功能和耐腐蚀性的材质。选用材料应符合现行国家标准《建筑材料及制品燃烧性能分级》GB8624燃烧性能等级A1级的有关规定。 Ⅲ警示安全设施和照明 4.6.6 一体化预制泵站外围应设置护栏和警示标志,设置在道路和广场下的一体化预制泵站可不设置护栏。对于无人值守或重要性较高的一体化预制泵站,宜设置视频监控系统。 4.6.7 一体化预制泵站场址范围内,应设置照明系统。一体化预制泵站井筒内应设置照明设施。 |
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CJJ/T 285-2018, CJJ 285-2018, CJJT 285-2018, CJJ/T285-2018, CJJ/T 285, CJJ/T285, CJJ285-2018, CJJ 285, CJJ285, CJJT285-2018, CJJT 285, CJJT285 |