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不锈钢多级离心泵在使用不当出现的故障

网址:www。westpump。com。cn  2019-07-06  作者:admin    阅读:

1、如在泵安装时,不能按安装使用说明书正确安装,致使泵产生振动,使泵内机械密封端面贴合不够好,或使端面打开产生故障,使密封泄漏。
1. If the pump can not be installed correctly according to the instructions for installation and use, it will cause vibration of the pump, make the end face of the mechanical seal in the pump not fit well enough, or make the end face open to produce faults, so that the seal leaks.
2、不锈钢多级离心泵运行时由于排气不充分或其他原因使密封腔内存有气体,运行时在密封腔内压的作用下,使摩擦副瞬间托开造成密封漏水故障。
2. Gas exists in the sealing chamber of stainless steel multistage centrifugal pump due to insufficient exhaust or other reasons. Under the action of internal pressure of the sealing chamber, the friction pair is instantaneously opened, which causes leakage of the seal.
3、循环系统清洗不干净或过滤不清洁、水质差、有异物、淤泥等,使摩擦面磨损严重也可造成故障。
3. The circulating system is not clean or filtered, the water quality is poor, there are foreign bodies, sludge and so on, which can cause serious wear and tear on the friction surface and also cause failure.
4、另外在不锈钢多级离心泵运行时由于突然的压力波动,产生脉冲压力或频繁的启动都可能使传动部位,防转部位的薄弱环节产生破坏,造成机械密封故障。所以用户使用高压锅炉给水泵时首先要解决电厂工艺流程的正确性,在工艺流程运行时尽量减少压力波动,减少频繁启动的次数。另外,在机械密封的设计中要考虑磨损力矩从动环传递到轴上和从静环传递到泵定子上时以及启动力从轴上传递到动环上的传动系统时的强度计算和选择避免产生以上出现的问题。
4. In addition, due to the sudden pressure fluctuation during the operation of stainless steel multi-stage centrifugal pump, pulse pressure or frequent start-up may cause damage to the transmission part and the weak links of the anti-rotation part, resulting in mechanical seal failure. Therefore, when users use high-pressure boiler feed water pump, first of all, they should solve the correctness of the power plant process, minimize the pressure fluctuation and reduce the frequency of frequent start-up when the process is running. In addition, in the design of mechanical seals, we should consider the strength calculation and selection of wear moment follower ring when it transfers to the shaft and from the static ring to the pump stator, and starting force when it transfers from the shaft to the transmission system on the dynamic ring to avoid the above problems.

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