Efficiency and Maintenance Simplified:
SEMHAI Engines unveil an extensive range of robust diesel engines designed for stationary applications, including centrifugal pumps, hydraulic pumps, air compressors, and air generators. Available in diverse power options, these engines boast ION power from 415 kW to 920 kW or ICXN power from 377 kW to 836 kW, in full compliance with ISO 3046-1 standards. Expertly certified for driving centrifugal pumps at variable speeds, these engines optimize power consumption empathetically with the propeller curve. Renowned for their reliability and fuel economy, SEMHAI diesel engines promise exceptional efficiency through prolonged overhaul intervals and extended service life. This enhanced power density elevates our diesel engines to the pinnacle of efficient and adaptable energy solutions, seamlessly powering your operations.
Impressive Performance Features
1. Equipped with 3 Superior Starting Functions:
(1). Manual Start Mastery: Seamlessly switch to manual-automatic interlock with the manual-start function;
(2). Automatic-Manual Versatility: Enjoy three chances to start, with a 'starter failure alarm' and automatic exit from the start state if unsuccessful thrice. Rated load start time varies between 5-10-15 seconds, adjusted by unit capacity, post-successful initial start;
(3). Emergency Manual Direct Start: Activate emergency manual direct start when self-controlled devices encounter issues.
2. Seamless Automatic Operation: Upon receiving a valid fire signal, the diesel fire pump activates automatically. Should the power supply system of the fire pump motor falter, it ensures continuous operation by switching to the electric pump once the power supply is restored or electric pump functions correctly.
3. Intelligent Automatic Shutdown: The diesel fire-fighting pump intuitively delays and ceases operation automatically when the fire signal dissipates.
4. Self-Charging Battery Functionality: Automatically charged by diesel engine electrical mains power, the battery ensures a reliable and smooth start every time.
5. Comprehensive Indication System: Features include ready to start, manual start, automatic start, unit operation and shutdown, battery charging, overspeed warnings, low oil pressure alerts for lubrication and turbocharger, low oil temperature, high cooling system water temperature, low battery voltage, low fuel levels, and routine inspection prompts.
6. Advanced Alarm and Protection Systems: Protects against 3-time start failures, overspeed, low lubricant oil pressure, turbocharger oil pressure issues, high cooling water temperature, low lubricating oil temperature, automatic charging device problems, battery voltage fluctuations, and low fuel levels.
7. Perfect Display Systems: Displays vital parameters like engine oil pressure, engine speed, battery charge current, and charging voltage diligently.
8. Direct-Couple Excellence: Diesel engine and water pump are united through high-flexible coupling on a common channel base, offering compact structure, superb overall performance, minimal faults and vibrations, and ease of on-site installation.
9. High Pressure and Large Flow Capability: Choose from IS series single-stage single-suction, SOW series single-stage double-suction, or SHD series segmental multistage pumps to cater to diverse fire scenarios' demands.
10. Adjustable Flow and Pressure: Diesel pumps with a mechanical or electronic speed governor adapt to changes in diesel engine speed, modifying the pump flow and head to align with actual data requirements.
11. Pre-Heated Water Temperature: Equipped with an AC220V cooling water preheating device, guarantees optimal operation in environments below 5 ºC.
12. Dual Battery Circuit Assurance: Should one battery group fail, the other seamlessly activates, ensuring continuous operation.
13. Maintenance-Free Battery Advantages: Enjoy the convenience of operating without the frequent need to add supplemental fluids.
14. Automatic Timing Inspection Test: In fire systems, which typically remain on standby, our innovative unit autonomously undertakes comprehensive device testing, ensuring all standby conditions are optimal while providing timely alerts to prevent any unforeseen incidents.
Note: The functions outlined above offer flexibility for customization according to user requirements. We pride ourselves on delivering tailored solutions that precisely meet your unique specifications.
Selection Configuration of Diesel Engine
1. The Pump: Choose from our finely engineered selection that includes the IS series single-stage single-suction pump, the robust SOW series single-stage double-suction pump, the SHD series multistage segment pump, and the versatile ZW horizontal self-priming centrifugal pump.
2. The Diesel Engine:
Our range features esteemed international brands of diesel engines, available in single-cylinder, two-cylinder, four-cylinder, and six-cylinder configurations. Enjoy flexibility with speed options of 1500r/min, 1800r/min, 2400r/min, and 3000r/min, ensuring optimal performance tailored to your needs.
3. Other Accessories: Enhance functionality with a comprehensive suite of accessories including a filtration system, silencer system, cooling system, fuel tank, common channel base, base fuel tank, radiator, battery, and charger, all designed to work seamlessly together.
4. The Control Cabinet: Leverage advanced technology with our control cabinets featuring SBC, PLC programming, sensors, and automatic controls, ensuring precision, reliability, and peace of mind in every operation.
| 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 |
Experience the power of renowned diesel engines featuring single, dual, quad, and six-cylinder configurations. Our engines boast impressive speed versatility with ranges of 1500r/min, 1800r/min, 2400r/min, and 3000r/min, ensuring optimal performance for every necessity.
Discover the strength of SEMHAI’s Robust Professional Coupling Adaptors, engineered to seamlessly connect diesel engines to pump drives. These adaptors ensure flawless alignment of the shaft, elevating operational efficiency.
Our coupling adaptors interface effortlessly with standard couplings, allowing simple plug-in installation without the need for alignment tools. Crafted from polyamide nylon reinforced with fibreglass, they offer torsional rigidity and are maintenance-free. Ideal for any hydrostatic drive in construction, agricultural, and forestry machinery.
Introducing Diesel Plus Fire Pump Controllers from SEMHAI, the epitome of advanced technology. These controllers are tailored to expertly manage and monitor 12 or 24-volt diesel fire pump engines, setting new standards in diesel engine control.
Features
Adapt to any environment with a Universal Supply Voltage range from 100Vac to 240Vac, offering unparalleled flexibility.
Dual Output versatility with 12 or 24 Vdc capabilities, easily selectable through a DIP Switch for seamless operation.
Stay connected with a USB Port / Drive, ensuring seamless communication and data management.
Effortlessly transfer data to and from a portable USB Device, enhancing data accessibility and convenience.
Embedded Web Pages*
Effortlessly access and view current status, precise data values, programmed set points, and historical data with ease.
Ethernet* Direct Connection facilitates seamless data transfer with a computer, ensuring reliable connectivity.
RS485 Port*
Enhance communication with MODBUS capabilities. Note: A COM Option must be ordered to utilize this function.
Introducing the New Big Volume Dual Wall Diesel Subbase Generator Fuel Tank - engineered for efficiency and reliability.
Our robust engine mounts isolate vibrations to significantly reduce noise in marine and industrial applications. Crafted with premium industrial-grade materials, these mounts offer longevity unmatched by cheaper alternatives, ensuring extended service life for your equipment.
Our professional gearboxes are precision-engineered for direct diesel engine mounting. Designed to accelerate or reduce speed across varied applications, these gearboxes offer versatility with an SAE housing and fixed coupling (Rubber Block Drive) or an optional switchable BD or BDS clutch for enhanced functionality.
Industry - Our cutting-edge Premium Centrifugal Water Pump is the perfect fit for your boiler feed water systems and cooling systems. Its robust design ensures optimal performance and reliability, making it a top choice for industrial applications.
Smelting - Enhance your smelting operations with our water circulation and cooling systems. Specifically designed to withstand the demanding environment of smelting facilities, our pump ensures efficient heat removal and optimal system performance.
Fire-fighting - Elevate your fire-fighting capabilities with our advanced systems. Our Premium Centrifugal Water Pump seamlessly integrates with fire hydrant systems, sprinkler systems, spray cooling systems, foam systems, and water monitor systems, providing unparalleled reliability and power when it matters most.
Ocean - Tap into the vast potential of oceanic applications with our pump's capability for wild water supply systems and island freshwater collection systems. Our pump is engineered to deliver high performance and efficiency in challenging maritime environments.
Heating - Achieve superior efficiency in heating applications with our water circulation and cooling systems. Designed to meet the rigorous demands of heating systems, our pump ensures consistent operation and energy efficiency.
Municipal - Trust our Premium Centrifugal Water Pump for emergency drainage and water supply solutions in municipal scenarios. Engineered for reliability in critical situations, it delivers exceptional performance and peace of mind.
Agriculture - Revolutionize your irrigation and drainage systems with our pump. Ideal for agricultural applications, our pump provides efficient water management, supporting sustainable farming practices and maximizing crop yields.
Esteemed Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has fostered a robust and enduring partnership with numerous prominent domestic pump-testing institutions, including:
The prestigious 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 Industry based in Zhenjiang City,
The distinguished Ministry of Agriculture's Water Pump Quality Supervision and Testing Center situated in Chongqing city,
And the acclaimed Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in the vibrant Shanghai city, among others.
Audited Supplier 
){kind=link}