Central air supply, heat dissipation and noise reduction system for motor group

Abstract

The invention relates to a central air supply, heat dissipation and noise reduction system for a motor group. The central air supply, heat dissipation and noise reduction system for the motor group comprises motors, noise reduction rooms, draught fans and air pipes, wherein the noise reduction rooms are arranged in a factory or each workshop, the draught fans which are used for centrally supplying air are installed in the noise reduction rooms, the wall, corresponding to an air outlet of each draught fan, of each noise reduction room is provided with a ventilation opening, the ventilation opening is communicated with a main air pipe arranged on a support in a suspended mode, a plurality of branch air pipes are distributed and arranged on the main air pipe, and the air outlet of each branch air pipe is communicated with the air inlet formed in each fan housing of the motor respectively. The central air supply, heat dissipation and noise reduction system for the motor group has the advantages of being suitable for the central air supply, heat dissipation and noise reduction for the motor group, capable of effectively improving the cooling and heat dissipation effects of the motor, obvious in noise reduction effect, and capable of enabling the noise of the motor group in operation to be meet the requirement of being less than or equal to 85dB (A). The utilized air pipes are all flexible air pipes which are made of fiber fabric to supply the air, the cost is greatly lowered, the air supply effect can be fully met, and the energy-saving effect is remarkable.

Description

technical field [0001] The invention belongs to the technical field of auxiliary facilities of electromechanical equipment, and relates to a system for air supply, heat dissipation and noise reduction in motor clusters. Background technique [0002] Different noises will be generated during the operation of the motor. If the noise generated during operation is within the range specified in the national standard GB10069=2000 "Motor Noise Measurement Method and Noise Limit", it is normal. If it exceeds the standard range, it is noise and should be dealt with. Motor noise is an important technical index to measure the quality of motor products. Therefore, controlling the noise of motors has become an important issue for the survival and development of domestic and foreign motor manufacturers. However, when the motor is running, there are usually multiple noise sources coexisting at the same time. If the necessary noise reduction measures are not taken, it will cause serious da...

AI Technical Summary

Problems solved by technology

Among them, the aerodynamic noise generated when the motor is running includes the cooling fan, the rotating rotor and the airflow noise formed when the airflow flows along the air path, while the noise of the cooling fan is formed by eddy current noise, rotation noise and mechanical noise. The motor windshield spreads out, causing noise pollution to the environment

In order to reduce the noise of the motor during operation, the following noise reduction measures are mainly adopted at present. One is to change the shape of the cooling fan of the motor and adopt a one-way backward fan that is more in line with the fluid structure. Although this fan can reduce the noise of the motor, However, it is only suitable for small-power motors of 315-355kW. For motors above 500kW, the requirement of 85dB(A) is still not met, and it is difficult to manufacture the blades of the fan; The purpose of noise reduction, but the noise reduction effect still cannot meet the ideal requirements; the third is to use water-cooled cooling method for heat dissipation and noise reduction. Users have high requirements on site and need to enter and exit the water system, which is prone to problems such as water leakage, water channel rust, and water channel scaling, which not only wastes water resources, but also cannot be used in environments below 0 °C

[0003] The above three heat dissipation and noise reduction methods are only for individual motors, but for industrial motors, most of them are used in some large-scale industrial and mining enterprises, such as petrochemical plants, oil refineries, steel mills, coking plants, etc., and an enterprise often There are thousands of motors, and a large number of electromechanical equipment radiate strong noise during operation, which comprehensively reflects that electromechanical equipment will generate a lot of noise pollution during operation, and noise pollution has been used as an important indicator for measuring environmental pollution. Therefore, the noise pollution of mechanical and electrical equipment and how to effectively dissipate and reduce noise have become the main research topics at present.

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