DG系列锅炉给水泵样本

桂林市广汇泵业样本

桂林市广汇泵业样本

目 录

CONTENTS

概述··············································································································1

General Description

结构特点·······································································································

Construction

泵装配要求····································································································

Assembly Specification

泵用材质·······································································································

Materials of Pump

泵的安装说明································································································

Installation

1 1 2 2 2 3 4 4 5 6 7 17 17 18

运转及维护····································································································

Operation and Maintenance

泵冷却水管····································································································

Cooling Water Pipe

附1：DG85-67和DG155-67泵轴承加油方法·················································

The method of filling oil for DG85-67 and DG155-67

附2：泵轴承型号·······················································································

The Bearing Model of Pump

可能发生的故障和解决办法············································································

The Possible Malfunctions and Solutions

泵结构图·······································································································

Sectional Drawing

泵性能曲线图································································································

The Performance Curve of Pump

泵外形及安装尺寸··························································································

Outline and Installation Dimensions

泵进出口法兰尺寸表······················································································

Table of Suction and Discharge Flange Dimensions

附3：泵基本参数知识······················································································

桂林市广汇泵业样本

概 述

DG系列锅炉给水泵属单吸多级节段式多级泵，适用于中小型锅炉给水或输送类似的热水等场合，输送介质温度一般不大于110℃，如果介质温度超过这个温度请在订货时说明。

本系列泵性能范围：流量6.3～185（米3/时），扬程50～698（米）。

泵型号意义：以DG46-50×6为例。

DG-------- 46-------- 50-------- 6---------

壳体为节段式，主

泵前后填料函和轴承体各设有一个冷却夹套，泵工作时需通用冷却水，能有效降低填料函和轴承室的工作温度。

泵轴封一般采用填料密封。需要采用机械密封时，应在订货时特别说明。

泵的轴承采用脂润滑(钙基润滑脂或二硫化钼锂基脂)，仅DG85-67及DG155-67轴承采用稀油润滑。

从驱动端看，泵为顺时针方向旋转。

泵装配要求

本型泵装配质量的好坏对泵的性能及运行稳定性影响特别显著，泵装配好后转子轴向串动量应符合下表要求。 泵型号

DG6-25, DG12-25, DG25-50, DG46-30, DG46-50, 40DG-40

DG85-45, DG25-30

DG85-67, DG155-67 转子轴向串动量 （仅适用于平衡盘结构的泵） 2mm 3mm 4mm

1

桂林市广汇泵业样本

泵用材质

根据泵压力的不同，泵过流部件采用铸铁、球铁或铸钢等材质，还可根据用户要求采用不锈钢材料。

泵的安装说明

泵的安装步骤一般包括把泵放到地基上，找水平，调正和联接泵的管路等。

（1）此间隙应大于泵转子的轴向串动量。

（2（3

（4A．起动

（1 （2 （3

（4）打开吸入管闸阀(如非倒灌则需灌泵)，使泵内充满液体。关闭出口闸阀及压力表旋塞，

然后起动电机，开压力表，慢慢打开闸阀到所需压力。

B．停车

（1）将泵出口闸阀关到最小流量，关闭电机，然后关闭压力表。

（2）泵停稳后再关闭泵吸入阀。

C．运转及维护

（1）泵只允许在规定的参数范围内运转。

（2）泵不允许在吐出阀关闭或关闭到很小开度下运转，否则导致泵发热，降低寿命。

（3）泵不能关吸入阀运行，也不能用吸入阀来调节流量，以免产生汽蚀。

（4）填料压盖不能压得过紧，否则会影响填料寿命。

（5）运转过程中，发现噪声或不寻常声音时，应立即停车，检查原因。

（6）注意泵轴承温度不应超过外界温度35℃，最高不应大于75℃。

（7）对于脂润滑的泵，每工作2000小时更换润滑脂一次；对于稀油润滑的泵，每工作 1500小时更换润滑油一次。

2

桂林市广汇泵业样本

泵冷却水管

(a) 前后填料函冷却夹套

DG6-25、DG12-25 DG25-50、DG46-50 DG46-30 DG85-45 DG85-67,DG155-67 40DG-40

b) 填料密封冲洗水管

注意：使用时，要注意控制水量，水量太大时, 水易溅入轴承体内。

c) 轴承体冷却（用于DG85-67，DG155-67）

见下页图的CI和CO。

3