???????? ???? ??? ????? ?? ????? ?? ??? ?? ????? ??, ?? ???? ???? ?? ???????? ?? ??? ?????? ???? ?? ????? ????? ?? ?? ?? ?? ?? ????? ?? ??? ???? ??, ??????????? ????? ?? ?????? ?? (?? ??????? ??) ?? ????? ??? ?? ?????? ????? ???? ?? ?????????? ?????? ?? ????

???????? ???? ?????? ????? ??? ?? ?????????? ?????? ?? ??? ???? ??,

1. ????? ?????? (????? ??????)

2. ????? ???? ?????? (???? ??????)

3. ?????? ????

4. ???? ?? ???

5. ???? ??? ????

6. ????? ???? ????? ??? ?? ??????

7. ????? ?????? ????? ??? ?? ??????

???????? ???? ?? ????? ?? ????? ?? ??? ?????? ?? ???? ?????? ??? ?? ???? ???? ???

???????? ??? ??? ????????? ?????? ????????, ???? ?????, ???? ??? ?? ???? ????, ?? ????? ?? ???? ?? ?????? ????? ???? ?? ????? ???? ?? ??????? ?????? ????????? ??? ?????? ??? ?? ????? ???? ???? ??, ????? ??? ?? ???? ???, ???? ???? ???? ?? ?????, ??????? ?? ??????? ???????? ????????? ?????? ?? ??????? ????????? ???? ??? ???, ???????? ???? ????? ?? ???? ????? ???? ??? ?? ?? ???

??? ????? ????? ??????? ?? ??? ??? ??????? ???? ?? ??? ???? ?? ?????, ???? ???? ???? ?? ???? ???? ?? ???, ??? ??????? ?? ?????? ?? ?????????? ?????? ???? ???? ????

?? ???? ???, ????? ?????? ?? ?????? ?? ?????? ??, ???????? ???? ?????? ?? ????? ?? ????? ?????? ?? ???????? ???? ???? ??? 

???????? ??? ?????? ?? ????? ?? ???? ????????

???????? ??????? ??? ???????? ???????? ?????? ?? ??????? ?????? ?? ???? ???, ????? ???? ????? ????? ????? ???:

????? ?????? ?? ????? ?? ??? ???;

② ???? ?????? ?? ????? ?????? ?? ??? ?? ???;

?????? ?? ????? ?????? ?? ??? ???;

Ealing ????? ???? ?? ????? ???? ??? ?? ??? ???;

And ??? ??? ?? ??? ???? ?? ??? ??? ?? ??? ?????

?????? ?? ????? ?????? ?? ??? ????? ?? ????? ?? ???? ???????? ???? ?????

??? ???? ???? ????? ?? ??? ?????? ?? ???????? ???? ??, ????? ??????? ?? ?? ?? ?????? ????? ?????? ???? ?? ????? ??, ?? ???? ??, ?????? ???? ?? ????? ?? ??? ???? ??, ????? ???? ??? ??? ???? ?? ?? ????? ?? ??? ???? ???? ??? ?????, ???????? ???? ?????? ?? ????? ??? ????? ?? ?????? ????? ?? ??? ????? ?? ?????? ??? ???????? ?? ??????? ???? ?? ????? ????? ????? ????? ??? ?? ????? ?? ????? ?? ??? ???????? ?????? ?????? ??????? ???? ???? ?????? ?? ????? ????? ??? ???? ???, ???? ????? ?? ??????? ?? ???? ??, ????? ???? ??? ????? ?? ????? ??? ???????? ?? ??????? ?????? ?? ?????? ????? ?? ???? ????? ?? ???????? ?? ??? ????? ?? ???? ?????, ?? ??? ??? ????? ???? ??? ???? ??????

?????? ????????? ?? ?????? ?? ??? ??????? ?? ???? ???????? ??? ?????

The vibration caused by unstable process conditions and poor installation, and the instantaneous disconnection of equipment evacuation and vaporization will lead to the damage of the liquid film between the dynamic and static rings of the mechanical seal, which will make the mechanical seal run “dry” under the condition of no lubrication. The temperature of the seal ring will rise rapidly, some of which will burn directly, some of which will be cooled sharply when the pump returns to normal working state, forming thermal shock and fragmentation. The poor flushing fluid and conditions will also cause thermal shock, which will lead to radial cracks in the seal ring and increase the wear failure of the dynamic and static rings. At the same time, when the temperature of graphite ring exceeds the service temperature, the crystal will precipitate on the surface of graphite ring, and carbonization will occur near the friction pair with higher temperature, and the particles will enter into the friction pair to make the dynamic and static ring wear out rapidly.

???????? ???? ?? ??? ?? ?????? ?? ?????? ?? ??? ????? ?? ????? ???? ??

???????? ?? ??????? ?????? ?? ?????? ???? ??????? ??; ?????? ???? ?? ??? ????? ??? ?? ????? ?? ?????? ?? ??? ???? ???????? ???? ??, ?? ????? ???? ???? ???? ??; ?????? ???? ?? ?????? ??????, ???, ??????, ???? ?????, ??? ?? ??? ????? ?? ???????? ??????????? ?? ????? ?? ???? ???

?????? ???????? ?? ???? ???????? ??? ?????

???????? ???? ?? ???????? ?? ????, ???????? ???? ????? ?? ???? ??? ???? ??, ????? ?? ????? ?? ????? ???? ???? ??; ???????? ??? ??? ???? ??; ???? ???????? ???????? ??, ????? ?????? ?? ??? ???? ???? ???? ??; ???????? ??? ?? ???????????? ??? ?? ????? ??????????? ?? ???? ???? ??, ?? ???????? ??? ?? ??????? ?????? ?? ??? ???? ????

?????? ???? ?? ??? ?? ???????? ???? ?? ?????? ?? ???? ???????? ???? ?? ?????

???????? ??????? ??? ????????? ????? ????????? ?? ??????? ?? ????, ???????? ???? ?????? ?? ?????? ???, ??? ??? ????? ?? ???? ?? ???? ???? ?????? ?? ??? ??????? ?? ???? ??????, ???????? ???? ?????? ?? ????? ?? ???? ???? ???? ???? ???

??????

??????? ???????? ?? ??????, ???????? ???? ?? ???? ???? ?? ????? ???? ?? ??? ?????????? ???? ?? ?????? ?? ????? ?????? ??????

???? ??????? ???????

???? ?? ??????? ???? ?? ???????? ???? ???????? ???? ?? ????? ????? ?? ??????? ???? ?? ???????? ???? ??, ?? ??? ???????? ?? ???? ???? ?? ?????????? ???????? ?? ???-??? ?????????? ?????? ?? ????, ???? ???? ?? ????? ???? ?? ??????? ??? ??? ????? ????? ?? ??????? ???? ???? ???? ??, ?? ????? ????? ??????????? ?? ?????; ??? ??????? ???? ???? ???? ??, ?? ????? ???? ???? ??, ????? ???????? ????? ?? ?? ??????? ???? ???? ??, ????? ?? 3-6 ?????? / ???? 2? ???? ?? ????? ????? ?, ???? ?????? ?? (??? ?? ???? ??????? ???? ???? ?? ??? ??? ???? ?? ???), ?? ????????? ??????? ???? ?? ???????? ?????? ??? ?? ??? ???????? ???? ?? ???????? ???? B ??, ?? p / (ab) = k, ?? B = AP / K, ?? ?? ???? ??????? ?? ??????? ???? ??? ??? ??????? ?? ??? ???? ?? ???? ???? ???? ??, ?? ???? ??? ?? ???? ?? ??? ??????? ??? ?? ????? ????? ?? ???? ??? ??? ???? ???? ???? ??, ?? ??????? ??? ?? ????? ?? ?? ?? ???? ??? ??????? ??? ?? ????? ?? ?? ??????????? ?? ???? ??????

?????? ??? ?? ?????? ?? ?????? ?? ?????

?? ???????? ?? ????? ?? ?? ???? ?????? ?? ??? ?? ?????? ???? ??? ??? ???? ????, ?? ??? ?? ?????? ?? ????? ?????? ?? ??? ????? ?? ???????? ????? ?? ??? ?? ???? ????? ?? ???? ????; ?????, ?? ?????? ??????? ?? ?????? ???? ?? ??? ?? ???????? ?? ???????, ???? ??? ?? ???????? ???? ???? ?? ???? ?? ?? ??? ?? ?????? ????? ????? ???? ??; ?????, ??????? ???? ?? ???? ???? ????? ?? ??????????? ?? ?????; ????, ?? ???? ?????? ?? ??? ?? ?????? ?? ????? ????? ?? ?????? ?????? ?? ???????? ?????? ???? ?????? ?? ??????? ??????? ????????? ???? ?? ???, ???? ?????? ????? ????? ????? ?? ????? ??? 0.5-1 ???? ???? ??, ?? ????? ?? ???? ?? ???????? ?? ????? ???? ?? ??? ????? ???? ???? ??, ????? ?????? ???? ???? ???? ???? ?????, ?????? ?????? ?????? ???? ?? ???? ?? ?????? ???? ????? ?? ???????? ??? ?? ???????? ???????? ?? ?????? ????????? ?????? ???? ?? ????? ?????? ????? ?? ??? ?? ??? ?? ???? ?? ???? ?????

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??????? ???? ??? ??? ??? ?? ?? ????? ?????? ??? ??, ?? ??? ?????? ????? ?? ??? ?? ?????????? ??? ??, ????? ???? ??? ???? ?? ??? ??????? ??????: ???? ????, ????? ?????? ??? ??????? ????? ?? ?????, ?? ?????? ?????? ?? ???????? ?????; ?????, ??????? ???? ??????? ???????? ???????? ???? ??, ?? ????? ?? ????? ???? ??, ?? ??????? ???? ????? ?? ?????? ?? ?? ?? ?????; ?????, ??? ??????? ???? ?? ??? ???? ??????? ??, ?? ????? ?? ??????? ???? ?? ?????? ?????????? ?????, ??????? ???? ?? ?????? ????? ?? ??? ?? ????? ????? ?? 1-2 ???? ???? ???? ??, ?? ?????? ???? ?? ????? ?????? ???? ???? ?? ??? ????? ????? ?? ???? ?? ???? ???? ??? ??? ??? ?? ???? ?? ????? ?? ???? ??, ?? ?? ???? ???? ????; ??? ??? ???????? ??? ????? ???? ?? ???? ??, ?? ?? ???? ??? ?????

?????? ?? ?? ??? ???????????

?????????? ???, ?? ???????? ???? ?? ????? ???? ?? ?????? ?????? ?? ????? ??? ????? ??, ????? ?? ?? ???????? ???? ?? ???????? ?? ??????? ?? ??? ??? ???? ??, ?? ?????? ???? ?? ?????? ?????? ?????? ?? ???????? ?????? ??????? ?? ???? ??????? ?????? ???, ??? ??????? ???? ?? ??? ??????? ????? ???? ?? (?? ?????? ?? ??? ????? ??? ??, ????? ?? ??, ????? ?? ?? ??, ???????? ????, ????? ?? ???? ???? ??? ??, ?? ??????? ?? ???????? ???? ??? ???? ?????? ????? ?? ?????? ???, ?? ?? ??) ??????? ????? ?? ??? ???? ??), ??? ???????????? ???? ????? ???? ??? ??????? ??????? ???? ??????? ???? ??? ??? ???? ??? ?? ????? ?????? ??? ???? ??, ????? ?? ?????????? ?? ?? ???? ?? ??? ??? ??? ???? ???? ??, ?? ?? ????? ?????? ?????? ?????? ???

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