Why does a coking radiation pump have two injection points for white oil and seal oil, and what is the function of each?

2016-09-02View Original

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Why does a coking radiation pump have two injection points for white oil and seal oil, and what is the function of each?

Reply #22016-09-02

The sealing oil is used in scheme 32 by being directly injected into the sealing chamber; the pressure there is higher than that of the medium, which prevents leakage from the first seal and stops high-temperature medium from leaking out. White oil serves to cool and lubricate the outer seal; it should be the scheme 32+53B

Reply #32016-09-02

Sealing oil is used for flushing the inner sealing chamber, while white oil is used for cooling the outer seal.

Reply #42016-10-16

For double-end mechanical seals, the sealing oil serves primarily to flush and cool; white oil is used between the two seals, as under normal conditions, without any lubricating medium, it is not possible to establish an oil film for protection

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