Page 6 - LTB冷却塔专用泵

莲盛泵业盛泵业 莲盛泵业
莲

用途(Application) 水泵启动、操作与维护(Water pump startup, operation and maintenance)

1. 闭式冷却塔、 冷凝器的水循环 启动前：
2. 各种机组设备的冷却用 1、应先用手盘动泵，以使润滑液进入机封端面;
3. 一般供水 2、用手拨转电机轴，检查叶轮有无磨擦和卡死现象，转动应灵活；
3、点动电机， 检查电机转向是否正确， 从电机顶端往泵底部看， 应为顺时针方向旋转， 但时间要短， 以免机械密
1. Water cycle in closed cooling towers or condenser
封干磨 ;
2. Cooling for various kinds equipment
4、打开进口阀门与排气阀， 使液体充满整个泵腔， 然后关闭排气阀；
3. General water supply
5、 如输送热介质时， 应先预热（即用所输送的液体不断循环来达到， 其升温速度为50℃/h) , 保证各部受热均匀。
运行中：
1、 进口阀门全开． 关闭吐出管路阀门;
安装注意事项(Installation) 2、 当泵达到正常转速后， 再逐渐打开吐出管路上的阀门， 并调节到所需工况 ;
3、注意观察仪表读数， 检查轴封泄漏情况， 正常时， 机械密封泄漏应小于3滴/分 ;
4、水泵环境温度为≤40℃. 检查电机与轴承处的温升应不大于85℃ ， 如发现异常现象，应及时处理．
1, 安装时管路重量不应承受在泵上， 否则易损坏水泵．
停车：
2、泵与电机是整体结构， 出厂时已由厂家校正， 安装时无需调整， 因此安装十分方便；
1、逐渐关闭吐出管阀门，切断电源;
3、 安装时必须拧紧地脚螺柱， 且每隔一定时段对其进行检查， 防止其松动， 以免水泵起动时发生
2、关闭进口阀门;
震动而影晌泵的性能；
3、如环境温度低于0℃,应将泵体内液体排除,以免冻裂;
4、安装泵前应仔细检查泵流道内有无影晌水泵运行的硬物（如石块、铁砂等），以免水泵运行时损
4、若泵长期停用，应将泵体内液体排净，定期维护。
坏过流部件，
5、为了维修方便及安全使用，在泵的进出口管路上安装一只调节阀及在泵出口附近安装一只压力表，
从而确保水泵在最佳工况下运行、 延长水泵的使用寿命；
Preparations before starting
6、 泵用于有吸程场合， 应装有底阀， 且进口管不应有过多弯头， 同时不得有漏水、 漏气现象， 以
免影响水泵的吸入性能：
7、 安装管路前转动水泵的转子部件， 应无摩擦声或卡死现象， 否则应将泵拆开检查原因。 1. The pump should be manually turned first to allow lubricant to enter the end face of the machine seal;
2. Rotate the motor shaft by hand and check for any friction or jamming on the impeller. The rotation
should be flexible;
3. Inch the motor to check if the direction of rotation is correct. From the top of the motor to the bottom
1.Do not let the pump subjected lo the pipeline weight , or it maybe easy to be made damaged ; of the pump, it should rotate clockwise, but the time should be short,To avoid dry grinding of mechanical
2.Both pump and motor are intergrally structured and calibrated by the manufacturer, so there is no need to seals;
easy to install； 4. Open the inlet valve and exhaust valve to fill the entire pump chamber with liquid, and then close the
exhaust valve;
3.Tighten the foot bolts in erection and periodically check the pump to prevent it from being loose and its
performance from being affected due to the vibration at the starting of it； 5. When transporting hot media, preheating should be carried out first (that is, the liquid being transported
should be continuously circulated to achieve a heating rate of 50 ℃/h) to ensure that all partsEvenly heated.
4.Prior to erection, carefully check if there is any hard matters(such as stones, iron sand etc.) Inside of the flow
path of the pump which may affect its running top event its flowing parts from being damaged during its
running; Starting and running
5. For the convenience of maintenance and safe use, a regulating valve is installed on the inlet and outlet
pipelines of the pump, and a pressure gauge is installed near the pump outlet to ensure that the pump operates In operation:
under optimal conditions and extend its service life; 1. Fully open the inlet valve and close the discharge pipeline valve;
6.A foot valve should be mounted in case of the pump to be used in the occasion with a suction stroke and 2. After the pump reaches normal speed, gradually open the valve on the discharge pipeline and adjust it to
there should not be too many elbows wth the inlet pipe and any water and air leaks to avoid its performance the required working condition;
of suction being affected；
3. Pay attention to the instrument reading and check for shaft seal leakage. Under normal circumstances, the
7.Before mounting the pipeline, move the pump's rotor and there should be no friction sound or block-up,
mechanical seal leakage should be less than 3 drops/minute;
otherwise the pump has to be removed to check and find the causes.
4. The ambient temperature of the water pump is ≤ 40 ℃ Check that the temperature rise at the motor and
bearings should not exceed 85 ℃. If any abnormalities are found, they should be dealt with promptly

1 2