CAL Optional Design
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5.2.1. Quench
For the carbon bush type quench structure, refer to Fig 5.2-7. For
the oil carbon bush type quench structure, refer to Fig 5.2-8.
•
Quench flow rate: 1.0 liter/min or less
•
Quench pressure: 0.03 MPaG or less
Fig 5.2-7 Quench (Carbon bush type)
Fig 5.2-8 Quench (Oil seal type)
To execute quenching with the carbon bush type by using water, the
water flow rate and pressure should be as shown below. If it is
expected to exceed the following flow rate and pressure, use the oil
seal type.
•
Quench water flow rate: 1.0 L/min or less
•
Quench pressure: 0.03 MPaG or less
To execute quenching by using air, the quench pressure should be
the same as that for water quenching. The flow rate should be
appropriately determined.
The oil seal type should be used to execute quenching by using a
liquid with high lubrication property. The quench pressure should
be the same as that for the carbon bush type. The flow rate should
be appropriately determined.
•
Quench pressure: 0.03 MPaG or less
5.2.2. Jacket water cooling
In case a jacket water cooling type, refer to Fig 5.2-9.
Do not use the liquid with a strong causticity for cooling water
because the material of the jacket cover (1650) is a cast iron. The
temperature and the pressure of cooling water should be assumed to
be the next.
•
Temperature of cooling water: 30
°
C or less
(At inlet of cooling water)
•
Pressure of cooling water: 0.3MPaG or less
The cooling water flow rate is different depending on use
conditions. Refer to the pump data sheet.
Fig 5.2-9 Jacket water cooling
5.2.3. External flushing
For the external flushing type, refer to Fig 5.2-10. To inject external
flushing liquid, the following two methods are available: The self
flushing method to flush pumped liquid over the seal cover from
the seat near the discharge flange, and the external flushing method
to flush liquid over the seal cover (4710) from an external source.
The models of mechanical seal that enable self/external flushing or
external flushing are LCA, LA200 and L9SA.
To flush liquid from an external source, the flushing flow rate
should be as follows:
•
Flushing flow rate: 4 to 5 L/min.
The pressure of flushing flow is different depending on use
conditions. Refer to the pump data sheet.
