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High Pressure and Flow Capacity Combined: Introduction to Diesel-Electric Combined Drive Fire Pump

Product features and performance advantages of this diesel electric combined drive fire pump. The equipment combines electric motor and diesel engine dual power system to ensure continuous water supply even under unexpected circumstances such as power outages, enhancing the reliability of the fire fighting system. The product has high pressure and high flow output, excellent hydraulic performance, intelligent control, compact structure for easy installation, adaptable to a variety of harsh environments, and support for customization, in line with a number of international fire standards. The overall design is geared towards demanding scenarios, such as high-rise buildings, petrochemical parks, underground facilities, etc., and is an ideal solution to meet the challenges of modern fire protection.

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As urban infrastructures grow in scale and complexity, so too do the demands placed on fire protection systems. Modern buildings, industrial facilities, petrochemical plants, and underground installations require firefighting pumps capable of delivering both high pressure and large volumes of water, consistently and reliably. The Diesel-Electric Combined Drive Fire Pump addresses these requirements with a dual-power design that ensures continuous operation even in the event of a power outage—making it an ideal solution for critical safety infrastructure.

1. Dual Power System for Uninterrupted Operation

This pump integrates an electric motor for primary power and a diesel engine as a fully automatic backup. When grid power is lost or unstable, the system seamlessly switches to diesel operation without interrupting water delivery, ensuring continuous fire protection at all times.

2. Superior Hydraulic Performance

Designed with optimized flow channels and a high-efficiency impeller, this unit delivers a high head and strong water flow, making it ideal for multi-story buildings, long-distance pipe networks, and complex industrial environments. Energy loss is minimized, and operational efficiency is maximized.

3. Intelligent Automated Control

Equipped with an advanced control panel featuring PLC technology, the system offers automatic start/stop, real-time monitoring, alarm notifications, and remote operation capabilities. A touchscreen interface enables users to manage parameters and access operation logs with ease.

4. Compact and Integrated Skid-Mounted Structure

All core components—electric pump, diesel pump, controller—are mounted on a single steel base. This integrated design simplifies transportation and installation while improving overall mechanical stability. Maintenance is more accessible, and space utilization is optimized.

5. Rugged and Reliable in Harsh Environments

Built with corrosion-resistant, high-strength materials, the pump is engineered for long service life and performance stability under extreme temperatures, humidity, and airborne particulates. It is suitable for use in demanding applications like industrial zones and outdoor installations.

6. Standards-Compliant and Fully Customizable

The system conforms to international firefighting standards, including GB6245 and NFPA 20. Custom configurations are available to meet specific site conditions, including power rating, flow rate, pressure head, pipe diameter, and more.

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    1. When the pipeline fire pump noise occurs, the most likely fault is the imbalance of the fire pump rotor. Since the water output of the fire pump mainly depends on the high-speed rotation of the rotor, when the rotor is unbalanced for some reason, it will cause the fire pump to deviate from the original rotation track during the rotation process, resulting in the fire pump appearing in the pipeline. When judging the failure of the rotor, it is mainly to replace the rotor of the pump or make a balance hole on the rotor blade of the pump to find out the balance difference.

    2. The production noise of the fire pump pipeline has a certain effect. For example, forcing a small flow of a pipe “fire pump” to increase power to increase the original flow will create vibrations in the fire pump. Therefore, whether you use a pipeline fire pump or other types of water pumps, you should follow the water pump use standards to prevent the water pump from making noise, which will affect the service life of the water pump. The solution is to use the pump according to the instructions. If the efficiency of use is affected, it is recommended to replace the appropriate pipeline “fire pump” for use.

    3. The installation did not meet the standards, resulting in abnormal noise from the pipeline fire pump. Fire pumps and fire hydrant pumps vibrate at a high frequency during operation, so they must be fixed during installation. If the bolt between the pump body and the base or between the base and the base is loose when installing the pipe fire pump, the transmission shaft between the pump body and the motor of the pipe pump will be bent. It lowered the concentricity and caused an imbalance in the fire pump rotor. This is one of the noise phenomena of fire pumps. In order to improve this phenomenon, the pump shaft of the fire pump needs to be balanced and then reinstalled. Finally, the base of the pump was reinforced.

    4. Blockage of the impeller passage can also cause fire pump noise. When the internal flow channel of the fire pump is blocked by foreign matter, it will cause uneven resistance of the fire pump impeller and vibrate the fire pump. Therefore, it is necessary to regularly disassemble and maintain the fire pump to prevent foreign matter from blocking the pipeline.

    5. The bearing of the fire pump is damaged. Bearing damage generally does not occur on the main body of an in-line fire pump. If there is a problem with the quality of the pump, or because some hard objects enter the pump body of the tube pump, the bearing is damaged, and the rotor is unstable at first. Causes noise from pipeline fire pumps.

    6. Finally, cavitation, cavitation occurs in any type of pump, but some are obviously not noticeable. If cavitation occurs, consider raising the fire pump or increasing the pressure in the piping. If the cavitation phenomenon cannot be changed, the fire pump model needs to be redesigned and replaced.