Efficient consumption and easy maintenance:
SEMHAI Engines presents an extensive range of diesel engines tailored for stationary applications, including centrifugal and hydraulic pumps, air compressors, and generators. These engines are offered in versatile power ranges, such as the ION power from 415 kW to 920 kW, and ICXN power from 377 kW to 836 kW, all compliant with ISO 3046-1 standards. They are meticulously approved for variable-speed centrifugal pumps, ensuring power consumption aligns with the specific propeller curve. Renowned for their robust construction, SEMHAI diesel engines excel in reliability and fuel efficiency, boasting extended service intervals and a prolonged life span. This superior power density transforms our diesel engines into adept and adaptable energy providers.
Performance features
1. Equipped with three impeccable starting functions:
(1). Manual start function: Achieve seamless manual-start functionality through a manual-automatic interlock with a switch;
(2). Automatic-manual functions: Permits up to three start attempts and issues a 'starter failure alarm', exiting the start state automatically if unsuccessful. Post the first successful start, the rated load commencement time is adjustable to 5-10-15 seconds, depending on unit capacity;
(3). Emergency manual direct start function: Enables manual direct start in emergencies when self-controlled devices fail.
2. Automatic operation: On receiving a valid fire signal, the diesel fire pump automatically engages. If normal pump start is hindered due to power supply disruption or failure, it will switch to electric pump operation once power is restored and functioning properly.
3. Automatic shutdown: The diesel fire-fighting pump intelligently delays and then shuts down automatically when the fire signal ceases to exist.
4. Battery self-charge function: Ensures seamless unit start by automatically charging the battery using the diesel engine's electrical mains power.
5. Sophisticated indicating system: Displays readiness to start, manual/automatic start, unit operations, shutdowns, battery charging, and addresses issues like over-speed, low lubrication oil pressure, low turbocharger oil pressure, high coolant temperature, low battery voltage, and low fuel levels, along with routine inspection alerts.
6. Comprehensive alarm and protection system: Offers alarms and protective measures against failures like three unsuccessful starts, overspeed, low lubricant pressure, turbocharger oil pressure issues, high coolant temperatures, lubrication oil temperature discrepancies, automatic charging device failures, and fluctuating battery voltages.
7. Advanced display systems: Provides real-time readouts of engine oil pressure, engine speed, battery charge current, and battery charging voltage.
8. Direct-coupled: The diesel engine and water pump are masterfully connected via a high-flexible coupling on a shared channel base, ensuring a compact structure, excellent performance, minimal failure and vibration, and ease of on-site installation.
9. Exceptional pressure and flow capacity: Utilizes IS series single-stage, single-suction pumps, SOW series single-stage, double-suction pumps, and SHD series segmental multistage pumps to cater to diverse fire-fighting scenarios.
10. Adjustable flow and pressure: Diesel pumps equipped with mechanical or electronic speed governors allow speed adjustments of the diesel engine to match actual pump flow and head requirements.
11. Water temperature pre-heating device: Equipped with an AC220V cooling water preheating device, it ensures operational readiness at temperatures below 5 ºC.
12. Dual battery circuit: Automatically engages an alternate battery group in the event of a failure in one.
13. Maintenance-free battery: Designed to eliminate the frequent need for supplemental fluid additions.
14. Automatic Timing Inspection Test: In the realm of fire safety, where readiness is paramount, our system remains in standby mode yet is always vigilant. The unit effortlessly conducts automatic tests to evaluate the standby condition, ensuring any potential issues are flagged promptly with timely warnings. This proactive approach guarantees the utmost reliability when it matters most.
Note: Tailored to Perfection - The aforementioned functions are designed to cater to diverse user needs. Choose from a plethora of options or allow us to craft a bespoke design that aligns seamlessly with your specific requirements, ensuring an unparalleled personalized experience.
Selection Configuration of Diesel Engine
1. The Pump: Choose from our cutting-edge series of pumps including the IS Series Single-Stage Single-Suction Pump for straightforward applications, the SOW Series Single-Stage Double-Suction Pump for enhanced capacity, the SHD Series Multistage Segment Pump for those demanding high pressure, and the versatile ZW Horizontal Self-Priming Centrifugal Pump.
2. The Diesel Engine:
Unleash power and efficiency with our internationally renowned diesel engines, available in single-cylinder, two-cylinder, four-cylinder, and six-cylinder configurations. With speed ranges spanning 1500r/min to 3000r/min, these engines deliver unmatched performance tailored to your specific needs.
3. Other Accessories: Augment your system with an array of accessories that include a premium filtration system, state-of-the-art silencer system, efficient cooling system, robust fuel tank, versatile common channel base, base fuel tank, high-performance radiator, reliable battery, and efficient charger. Each accessory ensures seamless operation and optimal performance.
4. The Control Cabinet: Leverage the power of technology with our SBC and PLC programming-enabled control cabinets. Equipped with advanced sensors and automation capabilities, our automatic control cabinets offer precision, reliability, and ease of use, setting a new benchmark in control technology.
| Engine Speed |
1500r/min; 1800r/min; 2400/min; 2800/min; |
| Engine power |
24HP-2220HP |
| Pump diameter |
50-500mm |
| Flow range |
10-2000L/s |
| Working pressure range |
0.2-2.2Mpa |
| Temperature range |
Ambient temperature ≤60'C; |
| Ambient atmospheric pressure |
> 90KPa |
| Transmission medium |
Water or other liquids physical and chemical properties similar to water; |
| Seal plumbing parts |
No installment when inlet pressure above 0.03Mpa (G) |
| Engine power selection |
Under non-normal conditions, diesel input power will be less than the rated power, it need to choice higher power diesel engine to support pump to ensure the normal operation |
Our product features internationally acclaimed diesel engines, available in single-cylinder, two-cylinder, four-cylinder, and six-cylinder variations. These engines operate within a versatile speed range of 1500 r/min, 1800 r/min, 2400 r/min, and peak at 3000 r/min, ensuring optimal performance for diverse applications.
Introducing the SEMHAI Robust Professional Coupling Adaptors - the ultimate solution for seamlessly connecting diesel engines to pump drives via a durable shaft. Precision-engineered for reliability and performance.
These coupling adaptors are ingeniously designed to connect to a standard coupling effortlessly, offering a plug-in installation without the need for alignment tools. Constructed from polyamide nylon fortified with fibreglass, they provide torsionally rigid and maintenance-free operation. Perfect for hydrostatic drives in construction machines, harvesters, and forestry equipment.
Experience unparalleled control with SEMHAI's Diesel Plus Fire Pump Controllers. Expertly crafted to manage and monitor 12 or 24-volt diesel fire pump engines, these controllers stand at the forefront of technological advancement in diesel engine management.
Key Features
Universal Supply Voltage adaptable from 100Vac to 240Vac, accommodating a wide range of power sources.
Dual output flexibility, selectable via DIP Switch for either 12 or 24 Vdc, tailored to your specific needs.
Comprehensive Communications through USB Port / Drive
Seamlessly Transfer Data to or from portable USB devices, ensuring easy accessibility and storage.
Integrated Embedded Web Pages*
Access and view current status, detailed data values, programmed set points, and historical data with ease.
Ethernet* Direct Connection allows for seamless data transfer and communication with a computer.
RS485 Port* for robust communications, ensuring reliable data exchange.
MODBUS Communication - Note: COM Option must be ordered for this function to be enabled.
Introducing the innovative Big Volume Dual Wall Diesel Subbase Generator Fuel Tank for enhanced capacity and safety.
Our premium engine mounts effectively isolate vibrations in marine and industrial applications, significantly reducing noise for both mobile and stationary equipment. Crafted from high-grade materials for extended durability, these mounts ensure longevity, outperforming standard options and protecting your equipment investment.
Our professional-grade gearboxes are expertly crafted for direct attachment to diesel engines. Designed for speed modulation – either acceleration or reduction – in diverse applications. Featuring an SAE housing and fixed coupling (Rubber Block Drive) or a switchable BD or BDS clutch on the input side for versatile performance.
Industry - Our pumps are the backbone of the boiler feed water systems and cooling systems, ensuring seamless and efficient operations.
Smelting - Enhance the performance of your water circulation and cooling systems with our reliable solutions tailored for the smelting industry.
Fire-fighting - Equip your fire safety systems with our top-tier pumps, designed for fire hydrant systems, sprinkler systems, spray cooling, foam, and water monitor systems to ensure maximum protection and efficiency.
Ocean - Our pumps are crafted to meet the rigorous demands of wild water supply systems and island freshwater collection, providing reliable water solutions even in challenging oceanic conditions.
Heating - Optimize your water circulation and cooling systems for heating applications with our state-of-the-art pump technology, ensuring energy efficiency and reliable performance.
Municipal - Be prepared for emergencies with our pumps, ideal for emergency drainage and water supply solutions, keeping municipal services running smoothly and efficiently.
Agriculture - Revolutionize your irrigation and drainage systems with our top-performing pumps, engineered to enhance productivity and sustainability in agricultural applications.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged steadfast and long-lasting cooperative relationships with numerous esteemed domestic pump-testing organizations. Our trusted partners include:
The distinguished National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City,
The reputable Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, situated in Chongqing City,
The well-regarded Shanghai Mechanical and Electrical Products Quality Inspection Center, located in Shanghai City, along with other prestigious institutions.
Audited Supplier 
){kind=link}