Outdoor type low-temperature-resistant air cooling diesel generator set for communication base station

Abstract

The invention discloses an outdoor type low-temperature-resistant air cooling diesel generator set for a communication base station. The outdoor type low-temperature-resisting air cooling diesel generator set comprises a heat insulation tank body and a heat insulation heating oil tank located below the heat insulation tank body. The heat insulation tank body is divided by an air inlet porous partition plate into a unit cabin located at the front portion of the heat insulation tank body and a control cabin located at the rear portion of the heat insulation tank body. An engine, a generator set body and a silencer are sequentially arranged in the unit cabin from back to front and are connected in sequence. The unit cabin is further internally provided with a space heater located on the top face of the unit cabin. The space heater is connected with a mains supply. The control cabin is internally provided with a heating system control tank fixed to the rear end wall of the heat insulation tank body, and a storage battery located below the heating system control tank. The heating system control tank is connected with the space heater. The storage battery is connected with the generator set body. The outdoor type low-temperature-resistant air cooling diesel generator set has the beneficial effects that the outdoor type low-temperature-resistant air cooling diesel generator set can be reliably started to work in an extremely-low-temperature environment, the operation performance is high, and the service life is long.

Description

technical field [0001] The invention relates to an external low-temperature resistant air-cooled diesel generator set for a communication base station. Background technique [0002] Diesel generator sets have been difficult to start in low temperature environment, which is mainly due to the following reasons: [0003] First, the starting torque is reduced [0004] For electric starter diesel generator sets, the starting torque is related to the capacity of the battery. The best ambient temperature for battery work is between 10 and 40°C. When the ambient temperature decreases, the capacity of the battery decreases accordingly, and the starting torque of the diesel generator set decreases significantly. [0005] Second, the starting resistance torque increases [0006] Diesel generator set crankshaft and bearing bush, piston and cylinder liner and other parts are made of different materials, and the thermal expansion coefficients are also different. Under low temperature...

AI Technical Summary

Problems solved by technology

[0005] Second, the starting resistance torque increases

Due to the increase of the starting resistance torque, it is difficult for the diesel generator set to reach the required speed for starting, such as greater than 100r / min, and it will be difficult to start.

[0007] Third, the intake air temperature and pressure are too low

[0008] Under low temperature conditions, the intake air temperature in the cylinder of the diesel generator set is very low, and the temperature of the cylinder barrel, piston and other related parts of the diesel generator set as well as the coolant is also very low, resulting in a large heat loss during the intake air compression process. The mixture temperature at the end of compression does not reach the temperature required for compression ignition

The temperature of the compressed air in the cylinder is too low, the cylinder, piston and other parts are poorly lubricated, and the pressure of the compressed air will be lower than the pressure required for normal startup.

[0009] Fourth, the viscosity and density of diesel oil increase

The air-cooled diesel generator set has the characteristics of good economy, high reliability, long life, and convenient maintenance and use. It is suitable for unattended communication base stations and satellite receiving stations in high mountains, wilderness, desert areas, and waterless alpine areas. Water-cooled diesel generator sets are difficult to use in some places

The air-cooled diesel generator set cannot use a device similar to a water jacket heater due to structural reasons, and because the air-cooled machine body has many heat sinks and fast cooling, how to ensure that it is used in extremely low temperatures in winter, such as -40°C? A smooth launch is a problem to be solved

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