A vibration and noise reduction device for a gasoline generator

Abstract

The invention provides a vibration and noise reduction device for a gasoline engine generator. The vibration and noise reduction device comprises a large box, a small box, the gasoline engine generator, an L-shaped exhaust pipe and a high-temperature steam pipe. A gap defined by the large box and the small box is filled with water. A drain valve is arranged on the inner bottom of the large box. A cover plate is arranged at the upper end of the small box. An observation window is mounted in a left hole in the cover plate hermetically. A suction plate is mounted in a right hole in the cover plate hermetically. The gasoline engine generator is mounted on the inner bottom of the small box by virtue of supporting seats. An exhausting tank of the gasoline engine generator is connected with one end of the high-temperature steam pipe. The other end of the high-temperature steam pipe is connected with a horizontal section of the L-shaped exhaust pipe. The horizontal section of the L-shaped exhaust pipe penetrates through the side wall of the small box and is positioned in the gap defined by the small box and the large box. The end part of the vertical section of the L-shaped exhaust pipe is positioned above water. A left retaining plate and a right retaining plate are respectively arranged in the horizontal section and the vertical section of the L-shaped exhaust pipe. The vibration and noise reduction device adopts a water medium as a vibration reduction medium, and when the vibration and noise reduction device is not in use, water can be drained; and the vibration and noise reduction device has the characteristics of being simple to operate and convenient to use.

Description

technical field [0001] The invention relates to a vibration and noise reduction device for a gasoline generator, in particular to a vibration and noise reduction device for a gasoline generator, which belongs to the field of vibration and noise reduction. Background technique [0002] Due to its compact structure, simple start-up, and stable current output, gasoline generators are widely used in theaters, hospitals, factories, and the field as emergency backup power sources. However, in the process of using a gasoline generator, there are still the following problems: First, the noise is large, which is because when the gasoline engine drives the generator to work, the excitation generated by the periodic motion of the piston and gear is applied to the casing of the gasoline generator. The forced vibration of the casing is caused, thereby generating strong radiation noise; second, the vibration is large, the overall mass of the gasoline engine generator is small, but the pow...

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Problems solved by technology

However, in the process of using a gasoline generator, there are still the following problems: First, the noise is large, which is because when the gasoline engine drives the generator to work, the excitation generated by the periodic motion of the piston and gear is applied to the casing of the gasoline generator. The forced vibration of the casing is caused, thereby generating strong radiation noise; second, the vibration is large, the overall mass of the gasoline engine generator is small, but the power of the gasoline engine is relatively large, and the vibration generated by the periodic movement of the piston and gears is very large, often used The gasoline generator leaves the original position after working for a period of time; the third is that when the gasoline generator is placed on the ground, it will feel more noisy. This is because the ground is an absolute hard boundary in the aeroacoustic problem, which will increase the radiation impedance of the sound source. The radiated sound energy of the sound source is doubled; the fourth is that the radiation noise generated by gasoline combustion and cylinder movement is easily transmitted through the exhaust pipe. Since the exhaust pipe of the gasoline generator is very short, the ability to attenuate the noise Poor, this is also a very strong noise source

[0003] The Chinese patent "A New Type of Gasoline Generator Set" (Patent No. 201220676510) improves the appearance of the gasoline generator. This patent only reduces vibration and noise in some areas of the gasoline generator, and fails to consider the gasoline generator. Vibration characteristics, and failed to carry out vibration and noise reduction measures for gasoline generators as a whole

[0004] The Chinese patent "three-cylinder water-cooled gasoline generator" (patent number 200920294462) has carried out water cooling and heat dissipation on the gasoline generator, and has improved the operation mode of the gasoline generator, but has not carried out noise reduction measures for the radiation noise of the gasoline engine

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