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What are the characteristics of diesel engine fire pumps?

The biggest difference between diesel engine fire pump and electric water pump is that it has its own independent power supply system – battery. Therefore, the start and operation of diesel engine fire pump will not completely depend on city power.

The diesel engine fire pump is usually used as a backup facility, so it will only start automatically when the fire signal comes, and when the electric water pump fails or the power supply is cut off. When it has a device for starting the pump at ultra-low pressure, its matching electric water pump control cabinet should also have a device for starting the pump at ultra-low pressure, and the lower limit of the two pumps should have a certain pressure difference.

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Diesel engine fire pump is simple in structure, reliable in use, convenient in installation, high in efficiency, small in size, light in weight, and has direct drive and variable speed drive. When ordering, the model (power, speed) of the power machine should be specified in order to determine the specifications of the coupling or pulley. Seen from the diesel engine pump to the water pump inlet, the impeller generally rotates counterclockwise. Diesel engine fire pumps adopt advanced air-cooled four-stroke direct-injection diesel engine as the power system, with compact structure, lighter weight and strong power. The main application of diesel engine pump: agricultural drainage and irrigation, industrial drainage and other devices. The diesel engine pump can be selected according to the specific requirements of the head, flow rate and conveying liquid of the place of use.

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    Generally speaking, we recommend that where natural ventilation is used to install diesel engine fire pumps, there must be vents and exhaust ports of sufficient size, and the position of the vents ensures that there is enough fresh air to supply the diesel engine for combustion within the temperature limit. Of course, the water supply radiator can also be used to take away the heat of the circulating cooling water and the heat emitted from the surface of the unit. If the space cannot meet the requirements of natural ventilation and cannot effectively dissipate heat, it is recommended that you adopt forced ventilation, install an intake fan and an exhaust fan at the vent, and choose a location that can provide enough cold air for the diesel engine and take away the machine room hot air inside. Generally speaking, the air intake of the unit should be 6-7 times that of the diesel engine. Only in this way can normal ventilation be ensured and the operating efficiency of the equipment can be improved.

    In addition, it must be fixed firmly so that the entire unit can be supported to ensure that the unit is in a horizontal state and absorb vibration. Generally speaking, the foundation of the unit adopts a concrete structure. The length and width are 150-250mm on one side of the length and width of the unit chassis, and the depth is 300-600mm. The height of the anchor bolts should be about twice the bolt diameter. And there should be a 750mm channel on both sides and front of the unit to facilitate the operator’s inspection and general maintenance.