A Small Diesel Generator is a type of small power generation equipment that uses diesel as fuel and is driven by a diesel engine to generate electricity. A complete set of a small diesel generator generally consists of core components such as a diesel engine, generator, control box, fuel tank, battery for starting and control, and protective devices.
 
I. Characteristics of Small Diesel Generators
Small diesel generators use diesel as fuel and feature high power, stable operation, easy maintenance, and safe and reliable use. They are compact and easy to move, and are widely used as backup or temporary power sources in scenarios such as household emergencies, small shops, and outdoor construction sites.
 
II. Huaquan Power is China's professional manufacturer of Small Diesel Generators
Huaquan Power was established in 2010 and is located in Weifang, Shandong. The company's industries involve power generation equipment, new energy storage equipment, high and low voltage complete sets of equipment, power engineering, and other fields.
Huaquan Power products incorporate multiple technologies such as intelligent monitoring, brushless excitation, low emissions, and noise reduction. In manufacturing, the company is based on lean management, combining informatization and industrialization, and has introduced intelligent equipment such as fully automatic spraying lines, industrial welding robots, and AGV intelligent transport platforms, possessing full-process production capabilities including material cutting, forming, machining, welding, painting, and installation commissioning.
Huaquan Power provides a service system covering pre-sale, in-sale, and after-sale. The after-sales service network has a wide coverage and responds quickly, ensuring users can use the products with confidence.
 
III. Advantages of Small Diesel Generators
Small diesel generators operate stably and reliably, with a low failure rate, making them suitable as emergency or backup power sources for long-term use. They have high fuel efficiency, high thermal efficiency, and lower energy consumption than similar products.
Small diesel generators start quickly, reaching full power within a minute in emergencies. In addition, they are compact and easily portable, usually equipped with swivel wheels and handles for convenient deployment.
Modern small diesel generators also use noise-reduction designs to keep sound levels low, making them suitable for a wide range of scenarios, from home backup and retail shops to construction sites.
 
IV. Safety Operating Procedures for Small Diesel Generators
1. Preparations and Inspections Before Operating a Small Diesel Generator
Personnel and Attire: Operators should be familiar with the equipment manual and dress neatly (sleeves and collars tightened). Female workers should tie up their hair and wear a hat. Wearing slippers is strictly prohibited.
Environmental Inspection: Ensure that the small diesel generator is placed in a well-ventilated, stable location, away from flammable and explosive materials, with complete and usable firefighting equipment.
Fuel, Water, and Electrical Inspection:
Fuel: Check that the Small Diesel Generator's diesel fuel is sufficient and that there are no leaks in the fuel system.
Engine Oil: Check that the oil level is within the gauge markings.
Coolant: Check that the coolant (or radiator water) is sufficient. In cold areas, antifreeze should be added.
Battery: Ensure the battery is fully charged, connections are secure, and there is no corrosion.
System Inspection: Check whether the air filter is clean, check for any oil or water leaks at pipe joints, inspect electrical wiring for damage, and ensure grounding is reliable.
2. Starting and Running a Small Diesel Generator
Starting: Turn on the control box power and press the start button (usually for 3-5 seconds). If it fails to start, wait 20 seconds before trying again. After starting, immediately observe the oil pressure gauge; if the pressure is abnormal, stop the engine immediately.
No-Load Operation: After starting, let the small diesel generator run without load for 3-5 minutes while observing whether the readings of water temperature, oil pressure, voltage, and frequency instruments are stable and normal.
Loading and Power Supply: Only after the generator runs normally under no-load conditions should it be connected to supply power. Loading should be gradual; sudden load or overload is strictly prohibited.
3. Running Monitoring of a Small Diesel Generator
Closely monitor instruments for voltage, frequency, current, water temperature, and oil pressure. Listen for any abnormal noises, vibrations, or odors. Check for any of the 'three leaks' (oil, water, or air leaks). Ensure exhaust is unobstructed and there are no flammable materials near the exhaust pipe.
4. Shutdown Procedures for a Small Diesel Generator
Normal Shutdown: First, disconnect all loads and let the Small Diesel Generator run under no-load conditions for 3-5 minutes. After the Small Diesel Generator has cooled, turn off the engine and finally close the fuel valve.
Emergency Shutdown: Immediately perform emergency shutdown under any of the following conditions:
Uncontrolled high-speed operation ('overspeed').
Sudden loss or extremely low oil pressure.
Severe abnormal vibration or noise.
Overheating, heavy smoke, or a burnt smell.
Presence of a personal safety accident or fire hazard on site.
 
 
IV. Shutdown Procedures for Small Diesel Generators
Normal Shutdown: First, open the circuit breaker to cut off all loads, allowing the small diesel generator to run without load for 3-5 minutes. After the Small Diesel Generator has cooled down, turn off the engine, and finally close the fuel valve.
Emergency Shutdown: In any of the following situations, perform an immediate emergency shutdown of the small diesel generator:
- ‘Runaway engine’ (speed out of control)
- Sudden disappearance or extremely low oil pressure
- Abnormally severe vibrations or noises from the Small Diesel Generator
- Overheating, heavy smoke, or a burnt smell
- Any safety incident or fire risk on site
 
V. Q&A on Knowledge Related to Small Diesel Generators
1. Why can't a small diesel generator be loaded immediately after starting?
It needs to run without load for 3-5 minutes to allow engine water temperature, oil pressure, and other parameters to stabilize, ensure sufficient lubrication, and avoid damage.
2. What should be paid attention to when two small diesel generators operate in parallel?
It is necessary to ensure that the voltage, frequency, and phase of the two small diesel generators are exactly the same, and professional paralleling devices and synchronizers must be used, otherwise equipment damage may occur.
3. What should be paid attention to when storing a small diesel generator for a long time?
The fuel tank should be emptied or filled (to prevent condensation), the battery should be disconnected, the engine should be protected against rust (for example, by adding oil and rotating the crankshaft), stored in a dry place, and started regularly for no-load operation.
 
VI. Application fields of small diesel generators
1. Public services and people's livelihood: Small diesel generators are widely used in fire emergency systems in hospitals, bank data centers, schools, hotels, shopping malls, and residential communities.
2. Communication and transportation: ensure the continuous operation of communication base stations and signal towers, and provide backup power for key equipment in transportation hubs such as airports and stations.
3. Engineering construction: Small diesel generators provide electricity for lighting, tools, and equipment at construction sites, road construction, and field exploration sites.
4. Agricultural production: used for farms (chicken and fish farming), farmland irrigation, ventilation and lighting of greenhouses, and daily electricity consumption in remote farms.
5. Industrial and commercial production: small diesel generators are used as backup or temporary production power sources for factories, mines, gas stations, water supply companies and other units.
6. Outdoor operations and activities: Provide temporary power for camping, outdoor performances, film and television shooting, night market stalls, etc.
7. Power supply in remote areas: In remote mountainous areas, islands, pastoral areas, etc., small diesel generators can be used as a common power source in daily life.
 
Small diesel generators play an indispensable role in numerous fields due to their strong power, flexible movement, and reliable operation. Users should choose the appropriate type of small diesel generator according to specific work needs.
More information about small diesel generator: http://www.hqstr.com/