Ultra-silent diesel generating set

Abstract

The invention provides an ultra-silent diesel generating set and belongs to the technical field of generators. The ultra-silent diesel generating set comprises a diesel engine, a generator, a water tank, a base, a top cover and an outer shell. The outer shell comprises a front cover plate, a rear cover plate, a door plate and a rear plate. The front end of the water tank is connected with a water tank baffle, a front tank body is arranged on one side of the water tank baffle, and a rear tank body is arranged on the other side of the water tank baffle. One end of the front tank body is connected to the front cover plate, a wind guide inclined plate is connected to the interior of the front tank body in an inclined mode, and a silencer is connected in the front tank body. One end of the rear tank body is connected with the rear cover plate. The base, the rear cover plate and the door plate are all provided with air inlets, the back face of each air inlet is connected with a wind guide acoustic panel, and sound absorption cotton is evenly laid on the inner surface of the outer shell. According to the ultra-silent diesel generating set, through noise analysis on the diesel generating set, noise sources are explored, different design and improvement modes are applied to the noise sources, noise is lowered greatly, the structure is compact, and the heat dissipation effect is good.

Description

technical field [0001] The invention belongs to the technical field of generators, in particular to an ultra-quiet diesel generator set. Background technique [0002] Diesel generator set is a kind of power equipment that uses diesel engine as the prime mover and drives synchronous generator to generate electricity. When the diesel generator set is running, it usually produces a noise of 95-125 decibels. If the necessary noise reduction measures are not taken, the noise of the unit running will cause serious damage to the surrounding environment. After analysis, the noise of diesel generator sets mainly comes from the following aspects: [0003] 1. Exhaust noise: Exhaust noise is composed of the periodic pulsating noise generated when the gas is subjected to the movement of the cylinder piston and the injection noise formed after the high-speed air is ejected through the exhaust port. Compared with the intake noise and the body radiation Mechanical noise is much higher and...

AI Technical Summary

Problems solved by technology

[0006] 4. Cooling fan noise: Generally, the water tank of the unit is equipped with a cooling fan, and the noise of the cooling fan is composed of eddy current noise and rotating noise;

[0008] 6. Air intake noise: Diesel generator sets need to have sufficient fresh air supply during normal operation. The air intake channel of the unit must be able to allow the fresh air to enter the machine room smoothly. At the same time, the mechanical noise and air flow noise of the unit can also pass through this air intake channel. radiate to the outside of the computer room;

[0009] 7. Generator noise: Generator noise includes electromagnetic noise caused by magnetic field pulsation between the stator and rotor, and mechanical noise generated by rolling bearing rotation

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