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对于输送轻质油料的单级离心泵,在使用中如果操作、维护不周,往往发生机械密封渗漏,从而削弱其使用寿命,并严重影响了离心泵工作的可靠件。目前,密封漏油问题已成为离心泵的主要故障,并危及轻油泵房的安全。 油库常用离心泵的扬程一般不超过0.8～0.9MPa(80～90mH_2O内),其密封采用图1所示的非平衡型机械密封。可能漏油的通道有A,P,C,D 4个途径。
For the single-stage centrifugal pump for transporting light oil, the leakage of the mechanical seal often occurs if the operation and maintenance are not carried out during use, thereby weakening the service life of the single-stage centrifugal pump and seriously affecting the reliability of the centrifugal pump. At present, the problem of seal oil leakage has become the major failure of centrifugal pumps, and endanger the safety of light oil pump room. Centrifugal pump commonly used oil tank head generally does not exceed 0.8 ~ 0.9MPa (80 ~ 90mH_2O), the seal shown in Figure 1 using the non-balanced mechanical seal. There may be A, P, C, D four ways to leaking oil.