论多弹簧式泄露的一种常见情况
A common case of leakage of multi-spring mechanical seal
该案例发生在一款凯士比高温热水泵上，现场中有四台Etanorm SYT高温热水泵，由于现场是化工新项目阶段，泵还没有投入正式使用，管道中一直有水，在泵停机将近半年后，业主根据现场需要，想把泵运行起来，但是却发现四台泵有三台泄露，而且泄漏量很大。
The case occurred on a KSB high-temperature hot water pump. There are four Etanorm SYT high-temperature hot water pumps on the site. Since the site is a new chemical project stage, the pump has not been put into formal use, and there has been water in the pipeline. Nearly half a year after the pump was shut down, the owner wanted to run the pump according to the site needs, but found that three of the four pumps leaked, and the leakage was large.
机械密封泄露情况视频Leakage of the meachanical seal
与客户沟通，拆解其中一台，查找分析泄露原因。
Communicate with the customer, disassemble one of them, find out and analyze the cause of leakage.
拆解图1 Photo 1
拆解2 Photo2
拆解到机械密封图3 Photo 3 of mechanical seal
机封接触面并无明显损伤，弹簧处有污泥残留。
There is no obvious damage on the contact surface of the mechanical seal, sludge found on the springs.
总结Conclusion：
结合泄露现象与拆解发现分析，水中污垢在小弹簧处沉积，导致弹簧工作异常，密封面不能正常贴合在一起，出现泄露量较大的问题。处理另外两台泵机封泄露的问题，没有对泵拆解，只是使用管路水冲洗机封腔，并手动正反盘车，使密封腔里面沉积的污垢变成漂浮状，让弹簧能够恢复正常功能，密封面贴合，泄露问题暂时解决，后期建议业主以后安装机封腔冲洗系统来保证机封的正常工作。
According to the analysis of leakage phenomenon and disassembly findings, the dirt in the water is deposited at the small spring, resulting in the abnormal operation of the spring, the sealing surface can not fit together normally, and the problem of large leakage occurs. To deal with the leakage of the mechanical seal of the other two pumps, instead of disassembling the pump, we just use the pipeline water to wash the mechanical seal cavity, and manually turn the positive and negative gears to make the dirt deposited in the seal cavity become floating, so that the spring can recover its normal function, the sealing surface fits together, and the leakage problem is solved temporarily. In the later stage, the owner is recommended to install the mechanical seal cavity flushing system to ensure the normal operation of the mechanical seal.