Efficient consumption and easy maintenance:
SEMHAI Engines proudly presents a comprehensive range of diesel engines, meticulously designed for stationary applications including centrifugal pumps, hydraulic systems, air compressors, and air generators. These engines are available across a spectrum of power ranges, featuring ION power from 415 kW to 920 kW or ICXN power from 377 kW to 836 kW, fully compliant with ISO 3046-1 standards. Our engines are expertly approved for driving centrifugal pumps with variable speed, ensuring power consumption aligns perfectly with the specific propeller curve. The robust SEMHAI diesel engines for pump drives are renowned for their reliable and fuel-efficient performance. They guarantee enhanced efficiency, thanks to extended overhaul intervals and prolonged service life. This streamlined power density transforms our diesel engines into highly efficient and adaptable energy sources.
Performance features
1. Featuring 3 types of advanced starting-functions:
(1). Manual start function: Seamlessly achieve manual-start operation through a manual-automatic interlock, utilizing an intuitive switch;
(2). Automatic-manual functions: Offers 3 starting attempts, issuing a "starter failure alarm" and automatically aborting the start sequence if unsuccessful after 3 tries; Reaches the rated load start time of 5-10-15S (adjustable by unit capacity size) upon first successful startup;
(3). Emergency manual direct start function: Provides a reliable manual direct start option during emergencies, particularly when self-controlled devices malfunction.
2. Automatic operation: The pump unit intelligently initiates automatic operation upon receiving a valid fire signal. If the pump fails to start due to power supply interruptions or failures in the fire pump motor, the diesel fire pump will automatically activate. Upon the restoration of the power supply system, or when electric pumps can operate properly, it will seamlessly switch back to the electric pump.
3. Automatic shutdown: Experience peace of mind with our diesel fire-fighting pump, which intuitively delays and shuts down automatically once the fire signal is no longer present.
4. The battery self-charge function: Ensure uninterrupted operations as the battery automatically charges via the diesel engine's electrical mains power, guaranteeing a seamless start.
5. Perfect indicating system: Be informed at every stage with indicators for readiness to start, manual start, automatic start, unit operation, unit shutdown, battery charging, overspeed, low oil pressure in lubricating and turbocharger systems, low oil temperature, high cooling system water temperature, low battery voltage, and low fuel level, along with reminders for regular inspections.
6. Perfect alarm or protection system: Comprehensive alarms and protection systems are in place for start failure after 3 attempts, overspeed, low lubricant and turbocharger oil pressure, high cooling water temperature, low lubricating oil temperature, automatic charging device failure, and fluctuating battery voltages.
7. Perfect display systems: Accurate and reliable displays for engine oil pressure, engine speed, battery charge current, and battery charging voltage keep you fully informed.
8. Direct-coupled: Our diesel engine and water pump are seamlessly connected through a high-flexible coupling, resting on a common channel base. This integration ensures a compact structure, superior performance, minimal failures and vibrations, and easy on-site installation.
9. Featuring high pressure and large flow capacity: By selecting from the IS series single-stage single-suction, SOW series single-stage double-suction pumps, and SHD series segmental multistage pumps, we cater to the diverse requirements of various fire scenarios.
10. Adjustable flow and working pressure: Our diesel pumps come equipped with either mechanical or electronic speed governors, allowing for the adjustment of diesel engine speed to align the pump flow and head with real-time data.
11. Featuring a water temperature pre-heating device: Equipped with an AC220V cooling water pre-heating system, our units are prepared to operate efficiently even in environments with temperatures below 5 ºC.
12. Double battery circuit: Experience continuous operation with a dual battery circuit, ensuring that if one battery fails, the other automatically takes over.
13. Maintenance-free battery: Enjoy hassle-free operations with our maintenance-free batteries, eliminating the need for frequent supplemental fluid additions.
14. Automatic Timing Inspection Test: In the realm of fire safety systems, which typically remain in standby mode, our solution shines by autonomously executing device testing under standby conditions. It provides timely alerts, ensuring the utmost reliability and efficiency.
Note: For a tailored experience, the aforementioned functions can be handpicked to align perfectly with user requirements. We stand ready to offer customized designs to cater to any specific needs, ensuring that your unique vision is brought to life.
Selection Configuration of Diesel Engine
1. The Pump: Delve into our versatile range featuring the IS series single-stage single-suction pump, the SOW series single-stage double-suction pump, the SHD series multistage segment pump, and the ZW horizontal self-priming centrifugal pump, each crafted for exceptional performance.
2. The Diesel Engine:
Experience the power of international renowned diesel engines, available in single-cylinder, two-cylinder, four-cylinder, and six-cylinder configurations. With speed options of 1500r/min, 1800r/min, 2400r/min, and 3000r/min, they promise unparalleled versatility and performance.
3. Other Accessories: Enhance your setup with our comprehensive range of accessories, including a filtration system, silencer system, cooling system, fuel tank, common channel base, base fuel tank, radiator, battery, and charger, each designed to optimize functionality.
4. The Control Cabinet: Explore our advanced control options featuring the SBC, PLC programming, sensor, and automatic control cabinet, engineered to provide seamless operation and intuitive control.
| 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 |
Internationally renowned diesel engine brands feature a versatile selection of single-cylinder, two-cylinder, four-cylinder, and six-cylinder options. With speed ranges of 1500r/min, 1800r/min, 2400r/min, and up to 3000r/min, these engines are engineered to meet diverse operational needs.
SEMHAI's Robust professional coupling adaptors are the pinnacle of innovation, expertly crafted to flawlessly connect diesel engines, driving pumps with unmatched precision and efficiency, ensuring optimal performance at all times.
Our coupling adaptors offer a user-friendly plug-and-play experience, connecting seamlessly to standard couplings without the need for alignment tools. Constructed from high-strength polyamide nylon reinforced with fibreglass, they deliver torsional rigidity and are maintenance-free, ideal for hydrostatic drives in construction, agricultural, and forestry machinery.
SEMHAI's Diesel Plus Fire Pump Controllers are engineered with cutting-edge technology to meticulously control and monitor 12 or 24 volt diesel fire pump engines, standing out as some of the most advanced diesel engine controllers on the market.
Features: Explore the comprehensive suite of functionalities designed to enhance the performance and reliability of our products, ensuring superior efficiency and control.
Universal Supply Voltage 100Vac to 240Vac: Accommodates a wide range of power sources, ensuring flexibility and compatibility in diverse settings.
Dual Output 12 or 24 Vdc - DIP Switch Selectable: Offers adaptable power solutions with easy selection for varied operational requirements.
Communications USB Port / Drive: Facilitate seamless data exchange and connectivity, enhancing user interaction and data management.
Transfer Data to / from Portable USB Device: Effortlessly manage and exchange data, ensuring quick access and reliability in every interaction.
Embedded Web Pages*: Access and manage system information with ease, featuring real-time status updates, data values, and historical insights at your fingertips.
View Current Status, Data Values, Programmed Set Points, and History: Gain comprehensive insights into operational parameters, ensuring informed decision-making and optimal performance.
Ethernet* Direct Connection / Data Transfer with a Computer: Experience fast, reliable data transfer and connectivity, streamlining operations and enhancing digital communication.
RS485 Port*: Facilitates robust communication and data exchange, expanding connectivity and integration capabilities across systems.
MODBUS Communication * COM Option must be ordered for this function: Enabling advanced communication protocols to streamline and optimize industrial operations.
Introducing the New Big Volume Dual Wall Diesel Subbase Generator Fuel Tank: Constructed to provide exceptional fuel storage capacity and safety, revolutionizing energy solutions.
Our Robust engine mounts isolate vibrations effectively for marine and industrial applications, significantly reducing noise in both mobile and stationary equipment. Crafted from premium industrial-grade materials, these mounts offer longer service life compared to conventional options, extending the lifespan of your machinery.
Precision-engineered professional gearboxes are tailored for direct diesel engine mounting. These gearboxes seamlessly adjust speed, suited for various applications, with options for SAE housing and fixed coupling (Rubber Block Drive), or a versatile switchable BD or BDS clutch, ensuring adaptability and performance.
Industry - Discover the unmatched efficiency of our pumps in boiler feed water systems and cutting-edge cooling systems, ensuring seamless operations and maximum productivity.
Smelting - Enhance your water circulation and cooling systems with our robust pumps, engineered to withstand the demanding conditions of smelting operations and deliver reliable performance.
Fire-fighting - Our pumps provide unparalleled support in fire-fighting operations, powering fire hydrant systems, sprinkler systems, spray cooling systems, foam systems, and water monitor systems for ultimate safety.
Ocean - Experience the transformative power of our pumps in ocean settings, perfectly suited for wild water supply systems and island freshwater collection systems, ensuring sustainability and efficiency.
Heating - Maximize the efficiency of your water circulation and cooling systems with our pumps, purpose-built for heating applications to maintain optimal temperature control and energy efficiency.
Municipal - Meet critical municipal needs with our pumps designed for emergency drainage and emergency water supply, providing reliable solutions when every second counts.
Agriculture - Transform agricultural landscapes with our pumps, expertly crafted for irrigation and drainage systems, ensuring consistent water management and crop vitality.
Strategic Partnerships with Leading Professional Agencies
Shanghai Semhai Pump Co., Ltd. has forged enduring partnerships with prominent domestic pump-testing institutions, ensuring excellence and quality in every product we deliver. These esteemed collaborations include:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in the heart of Tiexi District, Shenyang City,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City,
The distinguished Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, situated in Chongqing City,
And the prestigious Shanghai Mechanical and Electrical Products Quality Inspection Center, located in Shanghai City, among others.
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