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1、DG型工业锅炉给水泵Type DG Industrial Boiler Feed Pump安装使用说明书Instruction On Installation And Operation湖南湘电长泵（长沙水泵厂）长一制泵有限公司ChangYi Pump Manufacturing Co.,Ltd. Of XiangDian ChangSha Pump Works湖南湘电长泵(长沙水泵厂)长一制泵有限公司ChangYi Pump Manufacturing Co.,Ltd. Of XiangDian ChangSha Pump WorksCB一、概 述DG型泵系单吸、多级、节段式离心清水泵，适用
2、于中、低压及次高压锅炉给水、工 厂、城市高扬程输水。供输送清水或物理化学性质似于清水的液体，输送介质温度：-20C 150c （DG85-80、200DG43除外、此两种泵输送介质温度为-20C150C）。泵进口压 力不得超过 0.59MPa （6kgf/cm2）。参数范围：流量Q 6346m3/h扬程H 1021056m型号说明本型泵的型号有三种表示方法，举例分述如下：1）例40DG140X 6型号中：40泵吸入口直径为 40毫米DG1多级，节段式锅炉给水泵40单级扬程为 40米6级数为6级此种型号表示的泵有：40DGi402）例DG25 50X5型号中：DG多级，节段式锅炉给水泵25流量为
3、25米3/时50单级扬程为50米5级数为5级此种型号表示的泵有：DG25-50DG46-50DG85-67DG155-673）例DG80 30X4型号中：DG多级，节段式锅炉给水泵80吸入口直径为80米30单级扬程为30米4级数为4级此种型号表示的泵有：DG80-30I .GeneralType DG pump is single-suction, multi-stage, segmental centrifugal pump. It is used for feeding water of low-middle pressure boiler as well as pumping high
4、lift water of factory and city. It is provided for delivering clear water or other liquid which is physically similar to clear water.The temperature of the liquid for type DG85-80 and 200DG43 pump is - 20 C 150 C , the temperature of liquid for the others usually is -20 C 105c . The maximum inlet pr
5、essure is not allowed more than 0.59MPa(6kgf/cR).Performance rangeCapacity Q:6 346n3/hHeadH:102 1056mDescription of pump typeExample 1 40DGi40X 640Inlet diameter of pump(mm).DGiSingle-suction, multi-stage, boiler feed water pump.40Single-stage head of pump(m).6Pump stage numberSuch as type 40DG40.Ex
6、ample 2 DG25-50X5DGSingle-suction, multi-stage, boiler feed water pump.3 、25Pump capacity(m /h).50Single-stage head of pump(m).5Pump stage number.Such as type DG25-50、DG46-50、DG85-67、DG155-67.Example 3 DG80-30X4DGSingle-suction, multi-stage, boiler feed water pump.80Inlet diameter of pump(mm).30Sing
7、le-stage head of pump(m).4Pump stage number.Such as type DG80-30.二、结构说明本型泵主要由壳体部分，转子部分，平衡机构，轴承部分及密封部件组成。1 .壳体部分壳体部分主要由前段、中段、导叶、轴承体等用螺栓联接而成。泵吸入口和吐出口 均垂直向上。2 .转子部分转子部分主要由轴及装在轴上的叶轮、轴套、平衡盘等零件组成。轴上零件采用平 键和轴套螺母紧固使之成为一体，整个转子由两端轴承支承在泵壳体中。转子部件中叶 轮数是根据泵级数而定。3 .平衡机构平衡机构由平衡环、平衡套、平衡管路等组成。4 .轴承部分轴承部分主要由轴承体和轴承组成。
8、本型泵轴承有滑动轴承和滚动轴承两种。 轴承均 不承受轴向力，泵在运行中，转子部分在泵壳体中应能自由地轴向游动，不能采用向 心球轴承，各型泵采用的轴承见表。泵型号轴承涧滑方式冷却方式名称型号每台泵 用数量DG25-50单列向心短园柱滚子轴承23082付脂润滑DG46-5023082付40DG14023062付DG80-3023072付DG85-67滑动轴承巴氏合金2付稀油水冷DG155-672付DG85-802付DG155-1002付5 .泵的密封泵一般采用填料密封和机械密封6 .泵的旋转方向从吸入侧驱动端看泵为顺时针方向旋转。 根据用户要求，泵的驱动端也可移到吐出侧,此时从驱动端看泵为逆时针方
9、向旋转。II .ConstructionThe constructions of the type DG pumps are described in figure 1.1. Casing element: The casing element is composed of inlet section, middle section, diffuser vane, outlet section, and end cover, connected by studs. The inlet and outlet of the pump are both vertical.2. Rotor eleme
10、nt: The rotor element mainly consists of shaft, impeller, shaft sleeve, bearing bush and balance disk, the parts that are assembled on the shaft are fixed with key and sleeve nuts.3. Balance mechanism for axial thrust: This part consist of balance sleeve, balance plate, balance disk and balance wate
11、r pipe.4. Bearing element: The bearing element is composed of bearing body and bearing. The rotating or sliding bearing is adopted according to the different type of the pumps in the following table:Type of pumpbearingMethods of lubricatingMethods of coolingModelTypeNumber in a pumpDG25-50Short colu
12、mn roll bearing23082Lubricating greaseDG46-5023082Lubricating grease40DG14023062Lubricating greaseDG80-3023072Lubricating greaseDG85-67Sliding bearing2Lubricating oilWater coolingDG155-672Lubricating oilWater coolingDG85-802Lubricating oilWater coolingDG155-1002Lubricating oilWater cooling5. Stuffin
13、g box and sealing elements:The shaft seal uses packing seal or mechanical seal.6. The rotation of the pump : The rotation of the pump is in clockwise direction, looking from the end of the motor. The driving end may be moved to another one according to customers requirements, meantime, the rotation
14、of the pump is counter clockwise looking from motor to pump.# -湖南湘电长泵(长沙水泵厂)长一制泵有限公司ChangYi Pump Manufacturing Co.,Ltd. Of XiangDian ChangSha Pump WorksCEDG型泵结构图一（滚动轴承油脂润滑）Sectional Arrangement Fig 1 for Type DG Pump (with Roller Bearing)LJ吃空冷忐日落 口轴句管皆僚口轴向位置湍料底邂二1； 堂口知向位宣嗔科融片苟点 桂匚聃司政登二升?/帙出可部件总白储内旧f?Fn： pflrts揍冷却水接冷却水旧HZ机馆宙封留杵 Mccianical seal perts泵主要零件 Main Parts of pumpJLJunn.择Diffuse RMri百曲海fcJeiiry7W12案嘿桂1 ension BoltUe Rary Casrn9年配鞋BfilaMCP Eugt16 UShaft33解者S卜肝 SIMM-SStag*; Cas 成in 弄附加S臼内仃埠科H短户水前门Glare?立袈成若能ng RishDluser 日ill处impelleris号和拿盖Co
