Diesel Engine Fire Pump Set Designed to Provide Fire Fighting Water
Supply
| Max.Capacity | >400 L/min |
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| Driving Type | Diesel Engine &Electric Motor |
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| Impeller Number | Single-Stage Pump |
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| Working Pressure | High Pressure Pump |
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| Influent Type of Impeller | Single Suction Pump |
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| Position of Pump Shaft | Horizontal Pump |
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| Pump Casing Combined | Horizontal End Suction Pumps |
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| Mounting Height | Suction Centrifugal |
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| Impeller | Closed |
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| Usage | Pump, Pumps, Fire Fighting |
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| Voltage | 220V/380V/400V/415V/440V |
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| Frequency | 50Hz/60Hz |
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| Standard | UL, FM, Nfpa20, CE, ISO |
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| Casing Material | Ductile Iron |
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| Seal | Packing Seal |
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| Impeller Material | Bronze |
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| Working Temperature | Normal |
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| Color | Red |
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1. Product Description
EDJ series is a packaged fire pump set, generally an automatic fire
water supply system It consists of a main pump (driven by an
electrical motor), stand by pump (driven by diesel engine) and a
jockey pump. This model comes equipped with a separate controller,
or one that is attached to the skid, The package also contains
discharge valves, common header, and accessories.
2. Working Principle
Generally the pipeline network's pressure is between the low
pressure P1 and the high pressure P2. When the above pressure is
lower than P1, the pressure maintaining pump will start
automatically and not stop until the pressure rises gradually to
P2. Due to the pipeline network's leakage, its pressure will drop
to P1 gradually, and then the pressure maintaining pump will start
automatically again. with such a repeated process, the pipeline
network's pressure is maintained between P1 and P2 all the time.
when the pipeline network's pressure can't be maintained between P1
and P2 (for instance, when the water consumption increases a lot)
and drops to the minimum pressure P3, the electric pump will start
automatically and the pressure will rise to Pw and meet the need
for fire water supply, if the mains supply is power-off or the
electric pump fails, the pressure will continue to drop from P3 to
the ultimate pressure P4. then the diesel pump set will start
automatically, and the pressure will rise to Pw and meet the need
for fire water supply. the electric or diesel pump shall be stopped
manually after human judgment (except automatic switching ).
