Noise reduction device for on-site maintenance of gas turbine

Abstract

The invention relates to a noise reduction device for on-site maintenance of a gas turbine. The noise reduction device comprises a noise reduction blanket, wherein the noise reduction blanket is arranged on the outer surface of a noise source and at least comprises a gas-liquid mixing layer, a honeycomb layer, a vibration absorption column, a flexible layer and a damping layer, the flexible layer is the contact surface of the noise reduction blanket and the outer surface of the noise source, the flexible layer, the damping layer, the honeycomb layer and the gas-liquid mixing layer are sequentially and adjacently arranged, the vibration absorption column is arranged in the damping layer, and the vibration absorption column is cylindrical or conical or strip-shaped.

Description

technical field [0001] The invention relates to the technical field of noise reduction devices for on-site maintenance of gas turbines, in particular to a noise reduction device for on-site maintenance of gas turbines. Background technique [0002] At present, the supporting noise reduction system of the traditional gas turbine power station is fixed, and the power generation work is carried out in a certain planned area; the workshop site of the gas turbine is very noisy, and the most direct damage to the human body caused by noise is the damage to the hearing system, mainly High-intensity noise causes permanent damage to the neural hearing system of the inner ear; noise-induced hearing loss is an important cause of disability, and it has been identified as the second largest occupational disease and work-related injury. Noise deafness has been listed as a legal occupational disease in China; 25000KW gas turbine The noise emitted during work is about 140dB(A), which affects...

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Problems solved by technology

[0002] At present, the supporting noise reduction system of the traditional gas turbine power station is fixed, and the power generation work is carried out in a certain planned area; the workshop site of the gas turbine is very noisy, and the most direct damage to the human body caused by noise is the damage to the hearing system, mainly High-intensity noise causes permanent damage to the neural hearing system of the inner ear; noise-induced hearing loss is an important cause of disability, and it has been identified as the second largest occupational disease and work-related injury. Noise deafness has been listed as a legal occupational disease in China; 25000KW gas turbine The noise emitted during work is about 140dB(A), which affects the normal work and life around. Therefore, the offices on site are set far away, and for those who cannot be avoided, on-site duty personnel and maintenance inspection personnel need to be stationed, which has a very large impact. Moreover, the maintenance time sometimes reaches 3-5 working days, and the operation is more than 40 working hours. It is no longer possible to overcome the hazards of noise with simple protection for operators. The site space is large, and the movement of maintenance personnel has a great impact on noise reduction At the same time, it is difficult to achieve long-term operation with the use of sound-proof earplugs, and it cannot meet the problem of human body damage caused by the variable noise caused by people walking. In order to solve the above problems, a noise reduction device for on-site maintenance of gas turbines is needed.

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