Wartsila 31, Руководство по эксплуатации продукта

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9.3.10.3 Preheating unit (4N01)
A complete preheating unit can be supplied. The unit comprises:
●
Electric or steam heaters
●
Circulating pump
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Control cabinet for heaters and pump
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Set of thermometers
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Non-return valve
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Safety valve
Fig 9-10 Preheating unit, electric (3V60L0562C).
Dimensions [mm] Pipe conn. Weight
[kg]
Pump capacity
[m³/h]
Heater capacity
[kW]
E D C B A In/outlet 60 HZ 50 Hz
460 240 660 900 1250 DN40 95 13 11 18
480 290 700 720 1050 DN40 100 13 11 22.5
480 290 700 900 1250 DN40 103 13 12 27
480 290 700 720 1050 DN40 105 13 12 30
480 290 700 900 1250 DN40 125 13 12 36
510 350 755 720 1250 DN40 145 13 12 45
510 350 755 900 1250 DN40 150 13 12 54
550 400 805 900 1260 DN40 187 13 12 72
550 400 805 900 1260 DN40 190 13 12 81
575 450 855 900 1260 DN40 215 13 12 108
9.3.11 Throttles
Throttles (orifices) are to be installed in all by-pass lines to ensure balanced operating conditions
for temperature control valves. Throttles must also be installed wherever it is necessary to
balance the waterflow between alternate flow paths.
9.3.12 Thermometers and pressure gauges
Local thermometers should be installed wherever there is a temperature change, i.e. before
and after heat exchangers etc.
Local pressure gauges should be installed on the suction and discharge side of each pump.
9-16 Wärtsilä 31 Product Guide - a1 - 18 October 2016
Wärtsilä 31 Product Guide 9. Cooling Water System