Spiral spark extinguishing multi-cavity silencer

Abstract

The invention discloses a spiral spark extinguishing multi-cavity silencer. An air inlet pipe is arranged at one end of a silencer cylinder body, an air outlet pipe is arranged at the other end of the silencer cylinder body, a cylinder wall of the silencer cylinder body is of a double-layer structure, a cylinder wall cavity is filled with sound absorption materials, and an inner cylinder wall of the silencer cylinder body is a perforated plate. A front partition plate and a rear partition plate are fixedly arranged in a cylinder cavity of the silencer cylinder body at intervals and divide the cylinder cavity of the silencer cylinder body into a front expansion cavity, a middle expansion cavity and a rear expansion cavity. At least two perforated pipes are supported on the front partition plate and the rear partition plate, one end of each perforated pipe leads to the front expansion cavity, and the other end of each perforated pipe leads to the rear expansion cavity; a spiral flow deflector is fixedly mounted on the front partition plate and extends into a pipe of the air inlet pipe; and an ash collecting opening is formed in the silencer cylinder body and leads to the ash collecting hopper from the interior of the cylinder cavity of the silencer cylinder body. The multi-cavity silencer not only is wide in silencing frequency band and small in exhaust resistance, but also can quickly extinguish sparks.

Description

technical field [0001] The invention relates to an exhaust muffler for a diesel engine, in particular to a muffler capable of reducing noise at the exhaust nozzle of a marine diesel engine and extinguishing sparks. Background technique [0002] The acoustic performance of the muffler requires a sufficiently high muffler in the required muffler frequency range, the aerodynamic performance requires the muffler to have less resistance to the airflow, and the increased pressure loss after the muffler is installed must be controlled within the actual allowable range. If the aerodynamic performance of the muffler is poor and the resistance of the exhaust system is large, the fuel consumption of the internal combustion engine will be increased and the output power will be reduced. The existing muffler is generally of a single structure, which often cannot meet the respective requirements of low frequency and high frequency. It is difficult to unify to high noise reduction quantity ...

AI Technical Summary

Problems solved by technology

At present, the exhaust muffler for marine internal combustion engines is mainly an expansion muffler used to eliminate middle and low frequency noise. It often has a narrow muffler frequency band, which makes it difficult to cover the noise frequency band with higher sound waves, or easily forms a large flow resistance and noise in the exhaust pipeline. Exhaust back pressure, large internal combustion engine power loss

[0004] Diesel engines use a lot of diesel. Carbon particles are produced when the diesel is not fully burned in the combustion chamber. When there are flammable and combustible materials, it is easy to cause a fire alarm due to combustion, and even cause an explosion of the surrounding combustible gas, resulting in a catastrophic accident. Therefore, how to realize a muffler with high-efficiency noise reduction and spark extinguishing function has become an urgent problem for those skilled in the art. main technical issues

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