Big Power in a Small Package – The Advantage of Mini Diesel Fire Pumps in Fire Protection Systems

High efficiency, flat performance curve, wide operating range, in line with the relevant regulations of the fire department, and can meet the needs of different users
Adopt segmented structure, stable operation, low noise, long service life, small footprint, easy installation and maintenance

The horizontal sewage pump has the advantages of high efficiency, significant energy saving, stable operation, reliable performance and convenient maintenance. All horizontal sewage pumps are designed and optimized by computer. Our company has strong technical force, rich production experience and perfect testing methods to ensure stable and reliable product quality. (Material, cast iron, stainless steel)

For end suction pumps and since water is entering one side of the impeller, and due to the design of “Impeller overhung”, these pumps cannot be used for large water flow applications and usually not exceeding 1500 gpm of flow.

The equipment CONSISTS of frequency conversion control cabinet, no negative pressure device, automatic control system and remote monitoring system, water pump unit, voltage regulator compensator, negative pressure eliminator, pressure sensor, valve, instrument and piping system.

It is composed of pressure water tank, control cabinet, top pressure gas storage system, decompression release device and other basic components; In the condition of fire fighting, the compressed gas is filled into the pressure water tank to replace the fire fighting water in the tank, and always maintain the rated working pressure of fire fighting, and the fixed fire water supply equipment for the fire fighting pipe network.

Vertical inline close coupled fire pumps are specifically designed for vertical mounting. The suction and discharge nozzles are located on the same centerline 180° apart. Vertical pumps significantly reduce required mounting space. They are easy to maintain.

The star connection-delta connection utilizes the two connection methods of the motor to achieve the purpose of step-down starting, reduce the starting current, and reduce the impact of excessive current on the power grid. Simply put, the stator is connected in star at the start of the motor and then switched to delta connection after starting, which is the starting method of star-delta buck start.

The special hydraulic design and structural design make it more suitable for building fire-fighting water supply system with flow and pressure grading than ordinary centrifugal clean water pumps, and the flow-pressure characteristic curve is flat and has no hump. All parts of the friction parts due to rotation are made of wear-resistant, corrosion-resistant and anti-meshing materials, which have high reliability. The multi-stage pump can be equipped with double water outlets, which has high bearing capacity, strong anti-overload capacity and sensitive starting. .

The submersible sewage pump has features such as easy installation and maintenance, high working efficiency, anti-clogging and anti-winding design, which make it an ideal choice for industrial, municipal or commercial waste discharge system, septic tank, piggery, farmland irrigation.

As a complete set of equipment, it can meet all technical specifications of automatic fire water supply. In addition, it can accept and process all kinds of fire signals, replace the fire control center,
and send out all kinds of operation and fault alarm signals. 

The ZWG non-negative pressure water supply equipment is a pressurized water system designed to address low or unstable municipal water pressure in areas with insufficient water supply. This equipment ensures a stable and reliable water supply, particularly suited for high-rise residential buildings and schools. By effectively boosting water pressure, it offers continuous and stable water flow, meeting the domestic water needs of residents and students. The ZWG equipment’s energy-efficient design and advanced control systems contribute to reduced energy consumption, making it an environmentally friendly choice. Overall, the ZWG non-negative pressure water supply equipment is a reliable and essential solution for ensuring a consistent water supply in areas facing water pressure challenges, providing enhanced water pressure and flow to meet the demands of various settings, including high-rise residential buildings and educational institutions.

Features:
The double-blade impeller structure is adopted, which greatly improves the passing capacity of dirt.
The mechanical seal adopts a new type of grinding pair, and runs in the oil chamber for a long time;
The overall structure is compact, the volume is small, the noise is low, the energy saving effect is remarkable, the maintenance is convenient, and the user is convenient to replace;
Can be used within the design range without overloading the motor.

Starting mode
* Direct online <15kw * Y-△ voltage reduction startup 15kw~75kw (don’t adapt to submersible sewage pump control equipment) * Self-coupling voltage reduction startup >15kw (adapt to submersible sewage pump)
* Soft starter startup >15kw
Control mode
Y — automatically control the start and stop of the pump according to the height of the liquid
P — automatically controls the start and stop of the pump according to the pressure. Used in life and fire water supply and drainage pressurization system
T — Control the start and stop of the pump according to the set-up temperature. Used for constant temperature and heat exchange system

The Fire Pressure Stabilization Equipment, coupled with the CDL Vertical Multistage Fire Pump, offers a comprehensive solution to elevate fire safety measures. This powerful combination ensures a consistent water pressure for effective fire suppression. By incorporating pressure stabilization technology, this system guarantees an uninterrupted fire water supply, efficient water distribution, and reliable operation of fire hydrants and sprinkler systems. With advanced infrastructure and the ability to maximize firefighting capabilities, this configuration significantly enhances overall fire safety standards. Investing in fire pressure stabilization equipment is a proactive step towards ensuring superior fire protection and providing peace of mind in critical situations.

The vertical turbine fire pump is circulating water pump, and its over-flow medium is sea water. The function is to provide flushing water for the drum-type rotating filter to ensure that impurities and sea creatures can be washed away in time, thus bring clean seawater downstream. It can use with electric motor and also diesel engine.

The constant pressure variable frequency water supply equipment is an advanced system designed to maintain stable water pressure while ensuring energy-efficient water supply. It utilizes variable frequency technology and an intelligent control system to dynamically adjust pump speed and water pressure based on real-time water demand. This eliminates energy wastage caused by frequent start-stop cycles in traditional systems, providing users with a constant water pressure supply for stable and reliable water distribution during peak and off-peak periods. The equipment’s intelligent control system enables remote monitoring and automatic alarms, improving operational reliability and maintenance efficiency.

The electrical control cabinet of fire pump set mainly has the functions of starting and stopping the pump, switching between main and standby pumps, manual and automatic switching, dual power switching, patrol inspection, protection, and feedback for mechanical emergency start.

The housing of the diesel engine fire pump constitutes the working chamber of the pump. The impeller, shaft and rolling bearing are the rotors of the pump. Suspension bearing parts The supporting parts support the rotor parts of the pump, and the rolling bearings are subjected to the radial and axial forces of the pump. In order to balance the axial force of the diesel engine fire pump, most pumps have sealing rings at the front and rear of the impeller, and a balance hole on the back cover of the impeller. Because some pumps have little axial force, there is no seal on the back of the impeller. ring and balance hole. The axial sealing ring of the diesel engine fire pump is composed of packing gland, packing ring and packing to prevent air intake or large water leakage.

The YE2 series three-phase induction motor is inline with IE3 effieiency standard in the provisions of IEC60034-30-2008. And
the improvement of the efficiency in its design is in line with the state’s requirements on the energy saving and consumption
reducing of the manufacturing sector.
YE2  series motors with the mounting dimension in accordance with standard IEC60034,1t has good features like optimum
structure, attractive appearance, low noise, high efficiency, high protection class as well as high insulation class. YE2 series motors
can be widely used in various kinds of general use machineries like fans, pumps, machin tools, compressors, transportation and
so on, and can also be used in the hazardous areas with oil and chemical, steel plants, mining industry

The multistage fire pump consists of two parts: the motor and the pump, and the motor and the pump are coaxial. The structure of the pump consists of pump body, impeller, pump cover, mechanical seal and so on. The inlet and outlet of the pump are on the same horizontal axis and have the same caliber specification, so the loading and unloading is very convenient, and the floor space is small. The pump is fitted with a base for easy installation and increased pump stability. It is used to transport clear water without solid particles, liquids with physical and chemical properties similar to water. It is mainly used for pressurized water delivery in fire-fighting system pipelines, and is also suitable for industrial and urban water supply and drainage.

Fuel tank specifications：200L/400L/600L/800L/1000L/1200L/1500L/1800L/2100L/2500L/3100L/3600L/4100L/4500L

This device is suitable for fighting Class A (ordinary combustibles like wood, paper, and textiles), Class B (flammable liquids such as gasoline, oils, and alcohols), and some Class D (combustible metals like magnesium and titanium) fires, depending on the foam concentrate type used.

Specifications
1. for life, fire
2. Production sharing water
3. Low noise, good reliability
4. Reasonable construction
Application
Industrial and civil construction fixed fire protection system（fire hydrant extinguishment system, automatic spray extinguishment system, water spray extinguishment system）water supply, especially suitable for water supply of high-rise buildings, and also use for water supplying of fire-fighting and life in construction, industry and mining, boiler water supply, etc.

The impeller plays a pivotal role in the overall performance of any fire pump system. Our impellers are manufactured using advanced precision casting technology, resulting in a more compact, balanced, and defect-free structure. This significantly improves both operational stability and hydraulic efficiency. Each impeller undergoes dynamic balancing and features outstanding wear and corrosion resistance, making it ideal for demanding and continuous firefighting applications. Its optimized geometry enhances fluid dynamics, delivering greater head and flow. With this precision-cast impeller, your fire pump system will deliver faster response and higher reliability when it matters most—ensuring safe and uninterrupted water supply in emergency situations.

A Pressure Type Foam Proportioning Mixing Device is a sophisticated system used in fire suppression to mix foam concentrate with water, creating an effective foam solution for combating fires. This device ensures a precise and consistent mixing ratio, enhancing the fire-extinguishing capabilities of the foam.

The ZWX box-type non-negative pressure water supply equipment is a pressurized water system designed to address inadequate municipal water pressure in critical settings such as hospitals and hotels, where water cannot be shut off. It also serves as an ideal solution for meeting the domestic water needs of high-rise buildings and, specifically, fulfilling the water requirements of schools. This equipment ensures a continuous water supply, even during maintenance or emergency situations, effectively resolving the challenges posed by low water pressure. With its efficient pressurized water supply and advanced control technology, the ZWX equipment offers stable water pressure and flow rates, catering to the diverse demands of different settings. Furthermore, its intelligent operation and energy optimization contribute to reduced energy consumption.

In view of its excellent performance and cost performance, single screw pump has gradually been widely used in China in recent years. Its main features are strong adaptability to the medium, stable flow, small pressure pulsation, and high self-priming ability, which cannot be replaced by other pumps. Single screw pump is widely used in petrochemical, environmental protection, exploration and mining, medicine and food, shipbuilding industry, energy industry, papermaking, construction, mining, machinery and other industries.

The box-type non-negative pressure water supply equipment can be directly linked to the water supply network to ensure that the water supply network does not generate negative pressure. The pressurized water in the closed tank at peak time can compensate for the shortage of water supply in the water supply network and meet the needs of users.

The pressure tank, also known as the pressure tank, is one of the important components in the secondary water supply equipment. Its core function is to stabilize the water pressure, so it is called the pressure tank.
The reason why the surge tank can stabilize the water pressure is mainly achieved by compressing the gas in the capsule, because water is an incompressible fluid, and water with the same pressure can compress the gas to store water and have a certain pressure.

The horizontal mixed-flow pump is a kind of shell type single suction pump with one impeller. The reasonable structure makes for reliable operation, convenient maintenance, high efficiency, small volume and light weight.