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Mechanical seal's
Requirement for Pump |
Since
their inception, the reliability and mean time between failure
of mechanical seals fitted to pumps have been inconsistent.
Operational experience shows that seal performance varies relative
to application, pump type and manufacture. A significant amount
of research in seal face materials, hydraulic and thermal face
distortion, face lubrication, seal cooling, etc., has been carried
out by a number of mechanical seal makers and, while Large strides
in technology and seal performance have been achieved, the ultimate
breakthrough which will give consistent high reliability mechanical
seals has still to be made. As a contribution towards achieving
this step change in operation, the pump maker should recognize
those design and manufacturing aspects of pump design that affect
the seal performance and, where necessary, alter pump design
philosophy to ensure the pump to seal interface is idealised
not only from the standpoint of the pump, but also from that
of the mechanical seals. Here followed some requirement for
the pump.
A. Radial runout of shaft < 0.03mm
B. Coaxiality of shaft and sealing chamber > 0.02mm
C. Verticality of shaft and sealing face < 0.05mm
D. Axial float <0.01 mm
E. Amplitude of vibration of the shaft during running <10um
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2007 Shanghai Trisun Mechanical Seals Manufacture Co.,Ltd. All Rights Reserved
by trisunltd.com |
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