Answer: Diesel generator set is used as an emergency backup power source. Its main feature is that it is easy to move and power supply is instant. Then the generator manufacturer should consider the use of the generator set under various environmental factors. We have specially written “” Environmental requirements and conditions for stable use of generators “.
1. Diesel engines equipped with generator sets are used at high altitudes (plateau areas)
, especially naturally aspirated engines. When used in plateau areas, due to the thin air, it cannot burn as much fuel as it does at sea level, and the loss of For some power, for a naturally aspirated engine, the power loss is generally about 3% per 300m elevation, so when working on a plateau, lower power should be used to prevent smoke and excessive fuel consumption.
2. Use in extremely cold conditions.
At this time, auxiliary starting equipment (fuel heater, oil heater, water jacket heater, etc.) should be added. Use the fuel heater or electric heater to cool the cooling water and fuel of the cold engine. , The lubricating oil is heated to make the whole generator warm up so that it can start smoothly.
When the generator room temperature is not lower than 4 °C, install a coolant heater (water jacket heater) to maintain the engine block temperature above 32 °C.
For diesel generator sets that will operate at ambient temperatures below -18°, lube oil heaters (oil heaters), fuel line and fuel filter heaters are also required to prevent fuel solidification. The oil heater is installed on the engine oil pan. Heats the oil in the oil pan to facilitate the diesel engine to start at low temperature. It is recommended to use -10#～-35# light diesel oil.
Heating
with intake air preheater The intake air preheater (electric heating or flame preheating) is used to heat the mixture (or air) entering the diesel generator cylinder, thereby increasing the compression end temperature and improving the ignition conditions. The electric heating method is to install a glow plug or a heating wire in the intake pipe to directly heat the intake air. It does not consume oxygen in the air and does not pollute the intake air, but it consumes battery power.
Low temperature lubricating oil is
used to reduce the viscosity of the lubricating oil to improve the fluidity of the lubricating oil and reduce the internal frictional resistance of the liquid.
Utilize high-energy batteries
Use high-energy storage batteries, such as current nickel-metal hydride batteries and nickel-cadmium batteries. Pay attention to the heating or heating and heat preservation of the battery. If the temperature of the machine room drops below 0°C, a battery heater should be equipped. In order to maintain the capacity and output power of the battery.
3. When the diesel generator set is used in high humidity, heaters should be installed in the generator winding and control box to prevent short circuit or damage to insulation caused by condensation inside the generator winding and control box.
Note: For different uses and models of diesel engines, due to the different requirements for its low-temperature starting performance, the low-temperature starting measures adopted are also different. For an engine with high requirements on low temperature starting performance, in order to ensure that it can start smoothly at a very low temperature, sometimes it is necessary to take multiple measures at the same time.
Install
glow plugs. Use proper amount of starting fluid to increase the concentration of mixed gas. Diethyl ether assists starting
. Working under conditions of poor cleanliness
. Long-term operation in dirty and dusty environments will damage parts. Accumulated sludge, dirt and dust can wrap components and make maintenance more difficult. Deposits can contain corrosive compounds and salts that can damage components. Therefore, in order to maintain the longest service life to the greatest extent, the maintenance interval must be shortened.