排沙潜水泵操作规程
1. 现场技术人员、机修工、电工、水泵工和其他经常开泵停泵人员,事先必须认真阅读使用说明书,掌握排沙潜水泵的密封原理、结构特征、使用维护方法、注意事项、故障判断和排除方法。
2. 特别注意:为延长使用寿命,叶轮泵体均镶硬质合金环。若运输时受到强烈撞击,硬质合金环会断裂,并引起连锁损坏。所以,要求搬运时严禁碰撞,严禁从高处自由跌落。要求外观不许有碰伤的痕迹。
3. 在工作面平移排沙潜水泵时,事先应在泵底座之下安装一个两翘起的平钢板或爬犁脚。严禁将滤网拖坏。
4. 滤网之外,应当用铁丝筛网包围,网孔6x6mm,以阻断竹、木、橡胶、塑料碎片,防止叶轮堵塞。
5. 在来水一侧,最好设一道拦挡筛网。
6. 每10天检查一次蓄油室和蓄水室,发现缺机油,应及时补充,发现油水,应及时放光。
7. 每周至少检测一次电机连同电缆的对地绝缘电阻。发现阻值有下降趋势,应增加检测次数,并通知所有开停泵的人员关注运行中的反应。(可在牌板上书面通知)。
8. 一旦自动跳闸,首先由电工检测对地绝缘电阻。在故障没有查清之前,严禁强行送电开泵。
9. 必须强调认真执行开停泵方法:
开 泵 关闭排水管路闸阀——送电开泵——打开出水管路闸阀到事先规定的位置 ——进入正常运转状态。
停 泵 关闭出水管路闸阀——断电停泵——进入停止状态。
——如果管路内沉淀泥沙,会引起管路堵塞,应在排水管路中专门设置排沙管及闸阀,停泵后立即打开排沙管闸阀,放光管路内的泥沙和水。
10. 排水管内的流速必须大于2米/小时。
严禁无人看管时排水管流速小于0.5米/小时。否则,排水管内流速太低,泥沙会沉落,回到泵体内,加速叶轮磨损,还会使电机过载发热。
11. 叶轮磨损后,会失去平衡,空转时,还会发出金属碰撞的噪声。这时,,必须更换叶轮(或重新作叶轮静平衡)。
12. 叶轮一旦振动,切不可带病运转。经验告诉我们:叶轮振动,机械密封会失效,硬质合金环会断裂,进而会导致轴承破碎,当轴承盖的轴孔研坏后,会使电机扫膛烧毁。严重时,会导致整机报废。
13. 下井前,必须先作空转试验(包括新到货的产品),无振动、噪声,运行平稳,方可下井。
井下运转前,须先作空转试验,以验证运输时未发生碰撞事故。注意:虽然硬质合金不产生火花,但是,为了防止意外,在井下空转试验地点,必须由专职检查员检测瓦斯,沼气含量必须小于0.5%,空转试验的时间不得超过1分钟。
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