Efficient consumption and easy maintenance:
SEMHAI Engines proudly presents an expansive range of diesel engines, tailor-made for stationary operations including centrifugal pumps, hydraulic pumps, air compressors, and air generators. Engineered to perfection, our engines cater to a variety of power requirements, offering ION power from 415 kW to 920 kW and ICXN power from 377 kW to 836 kW, in strict adherence to ISO 3046-1 standards. These engines are meticulously approved for driving centrifugal pumps at variable speeds, optimizing power consumption per the specific propeller curve. Renowned for their robust construction, SEMHAI diesel engines ensure reliable, fuel-efficient performance, guaranteeing long-lasting efficiency with extended overhaul intervals and service life. This outstanding power density transforms our diesel engines into highly efficient and adaptable energy solutions.
Performance features
1. Exceptional starting functions with 3 innovative options:
(1). Manual start function: Experience seamless manual starting by engaging the manual-automatic interlock using a simple switch.
(2). Automatic-manual functions: Equipped with an advanced three-time starting feature, it triggers a 'starter failure alarm' and disengages the starting mode if initialization fails thrice. The transition to full load occurs smoothly within 5-10-15 seconds, contingent on unit capacity, upon successful initial start.
(3). Emergency manual direct start function: In emergencies, this feature enables direct manual starting when self-control systems malfunction, ensuring uninterrupted operation.
2. Automatic operation: Upon receiving a valid fire signal, the diesel fire pump initiates automatically if the electric pump fails to start due to power system disruptions. Once normalcy is restored, the system seamlessly transitions back to the electric pump operation.
3. Automatic shutdown: The diesel fire-fighting pump intelligently delays and ceases operations automatically when the fire signal is no longer detected.
4. Automatic battery charging: The system ensures uninterrupted performance by automatically charging the battery using the diesel engine's electrical mains power.
5. Comprehensive indicating system: A state-of-the-art indicator panel displays readiness to start, manual or automatic start, operation status, unit shutdown, battery charging, and critical alerts such as speeding, low lubrication oil pressure, cooling system anomalies, battery voltage irregularities, and fuel level alerts, alongside routine inspection reminders.
6. Advanced alarm and protection system: Provides robust alerts and protection against start failures, overspeeding, low and high oil pressures, temperature irregularities, charging device failures, battery voltage discrepancies, and insufficient fuel levels.
7. Sophisticated display systems: Real-time monitoring of engine oil pressure, engine speed, battery charge current, and charging voltage, ensuring optimal operational efficiency.
8. Direct-coupled design: Featuring a high-flexible coupling that directly links the diesel engine to the water pump on a common channel base, this design offers a compact structure, superior performance, reduced failure rates, and minimal vibration for convenient on-site installation.
9. High pressure and large flow capacity: Select from the IS series single-stage single-suction, SOW series single-stage double-suction, or SHD series segmental multistage pumps to accommodate the demands of diverse fire scenarios.
10. Adjustable flow and working pressure: Equipped with a mechanical or electronic speed governor, the diesel pumps can adapt by modifying the engine speed to align the pump flow and head with precise operational data.
11. Water temperature pre-heating device: Outfitted with an AC220V cooling water pre-heating device, the unit ensures optimal functionality even in environments where temperatures drop below 5 ºC.
12. Dual battery circuit: In the event of a battery group failure, the system seamlessly switches to an alternate battery group, maintaining continuous operation.
13. Maintenance-free battery: Engineered for convenience, these batteries require no frequent fluid top-ups, offering a hassle-free power solution.
14. Automatic Timing Inspection Test: In the realm of fire safety, where reliability is paramount, our system often rests in a vigilant standby mode. It possesses the remarkable capability to autonomously conduct device testing to ensure optimal standby conditions and provide timely alerts, safeguarding your peace of mind.
Note: The aforementioned functions are customizable based on user preferences. We offer bespoke design solutions tailored to meet specific requirements, ensuring our product aligns perfectly with your unique needs.
Selection Configuration of Diesel Engine
1. The Pump: Choose from our superior range, including 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 designed for optimal performance.
2. The Diesel Engine:
Experience the power and reliability of internationally acclaimed diesel engines, available in configurations from single-cylinder to six-cylinder, with speeds ranging from 1500r/min to 3000r/min, ensuring robust performance for every application.
3. Other Accessories: Our comprehensive suite of accessories includes a high-performance filtration system, effective silencer system, advanced cooling system, durable fuel tank, versatile common channel base, robust base fuel tank, efficient radiator, dependable battery, and a reliable charger.
4. The Control Cabinet: Equipped with cutting-edge SBC and PLC programming, our control cabinet features a sophisticated sensor and automatic control technology, ensuring seamless operation and precision 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 |
Shanghai Semhai Pump Co., Ltd. presents internationally renowned diesel engines. Our versatile range includes single-cylinder, two-cylinder, four-cylinder, and six-cylinder models. Experience unparalleled performance with speed ranges of 1500r/min, 1800r/min, 2400r/min, and 3000r/min.
Introducing SEMHAI's exceptionally durable professional coupling adaptors, engineered to seamlessly connect diesel engines to pump drives with finesse and precision.
Our coupling adaptors effortlessly integrate with standard couplings, ensuring a straightforward plug-in setup without the hassle of alignment tools. Crafted from high-quality polyamide nylon reinforced with fiberglass, these adaptors are torsionally rigid and require zero maintenance. Ideal for any hydrostatic drive in construction machinery, harvesters, and forestry equipment.
SEMHAI's Diesel Plus Fire Pump Controllers set the standard in controlling and monitoring 12 or 24-volt diesel fire pump engines. These controllers are among the most sophisticated and technically advanced systems available today.
Features
Universal Supply Voltage ranging from 100Vac to 240Vac, offering flexibility and adaptability.
Dual Output capability of 12 or 24 Vdc, easily selectable via DIP Switch for tailored performance.
Convenient Communications through a USB Port / Drive for seamless data interaction.
Effortless Transfer of Data to and from portable USB devices for optimal data management.
Embedded Web Pages* provide immediate access to system insights and diagnostics.
View real-time Current Status, Data Values, Programmed Set Points, and Historical Data effortlessly.
Ethernet* Direct Connection ensures efficient Data Transfer to and from a computer.
RS485 Port* enhances connectivity with robust communication capabilities.
MODBUS Communication* ensures reliable integration, with COM Option required for activation.
Discover our New Big Volume Dual Wall Diesel Subbase Generator Fuel Tank, designed for maximum capacity and reliability.
Experience superior vibration isolation with our robust marine and industrial engine mounts. Engineered to reduce noise in both mobile and stationary equipment, these mounts are constructed from premium industrial-grade materials, ensuring longevity and safeguarding your equipment's life.
Expertly crafted professional gearboxes are designed for direct diesel engine mounting. These gearboxes are perfect for speed modulation across various applications. We offer SAE housing and fixed coupling (Rubber Block Drive) or a switchable BD or BDS clutch on the input side for versatile functionality.
Industry - Perfect for boiler feed water systems and efficient cooling systems, our pump ensures optimal industrial performance.
Smelting - Enhance your smelting operations with seamless water circulation and advanced cooling systems for superior temperature control.
Fire-fighting - Reliable in fire hydration: integrates with fire hydrant systems, sprinkler systems, spray cooling systems, foam systems, and water monitor systems for comprehensive safety solutions.
Ocean - Efficient in wild water supply systems and the innovative island freshwater collection systems, ensuring sustainability and resource management.
Heating - Ideal for water circulation and cooling systems, providing consistent heating solutions for diverse applications.
Municipal - Essential for emergency drainage and water supply, our pump supports municipal services with reliability and efficiency.
Agriculture - Designed for robust irrigation and drainage systems, enhancing agricultural productivity and water management.
Our Esteemed Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged robust and enduring partnerships with a host of prestigious domestic pump-testing institutions. These collaborations ensure that our products meet the highest standards of quality and performance. Notable partners include:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in the Tiexi District of Shengyang city, known for its rigorous testing protocols and excellence.
The Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City, a premier entity in quality assurance of irrigation machinery.
The Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing city, dedicated to maintaining the highest agricultural standards.
The Shanghai Mechanical and Electrical Products Quality Inspection Center, positioned in the dynamic city of Shanghai, renowned for its meticulous evaluation processes and unwavering commitment to quality.
Audited Supplier 
){kind=link}