Heat dissipation system for high-voltage frequency converter of desulfurization and denitrification induced draft fan

Abstract

The invention provides a heat dissipation system for a high-voltage frequency converter of adesulfurization and denitrification induced draft fan, and relates to the technical field of environment-friendly desulfurization and denitrification production. The system comprises a frequency converter assembly and a heat dissipation assembly, the frequency converter assembly is arranged in a control room, the frequency converter assembly comprises a transformer cabinet, a power unit cabinet and a switching cabinet, the transformer cabinet and the power unit cabinet are each provided with a cabinet top fan, the heat dissipation assembly comprises 10P air conditioners and 5P air conditioners, and the 10P air conditioners are located on the two sides of the rear end of the interior of the control room. The two 10P air conditioners and the three 5P air conditioners are arranged to perform internal circulation heat dissipation, air is not extracted from the outside, insulation breakdown damage of internal electrical components caused by accumulation of a large amount of conductive dust in the frequency converter assembly can be avoided, the service life of the electrical components is prolonged, the fault rate of the frequency converter assembly is reduced, no hot air duct or negative pressure exists, overload operation and over-temperature burning loss of a cabinet top fan of the frequency converter assembly can be avoided, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of environmental protection desulfurization and denitrification production, in particular to a heat dissipation system for a high-voltage frequency converter of a desulfurization and denitrification induced draft fan. Background technique [0002] In the production of iron and steel companies, sintering machines are often used. The sintering machine is suitable for the sintering operation of large-scale ferrous metallurgical sintering plants. It is mainly suitable for the sintering treatment of iron ore powder in large and medium-sized sintering plants. Desulfurization and denitrification induced draft fans are required for environmental protection treatment, and the high-voltage frequency converter equipment failure rate of desulfurization and denitrification induced draft fans is high. The main reasons are as follows: [0003] 1. The cooling mode of the high-voltage inverter is to extract outdoor air to co...

AI Technical Summary

Problems solved by technology

[0003] 1. The cooling mode of the high-voltage inverter is to extract outdoor air to cool down the inverter. During normal operation, see the attached Figure 4 , although the filter cotton is installed on the louvers and the inverter cabinet door also has filter cotton, the filtering effect is not ideal in the actual application process, and a large amount of conductive dust has accumulated inside the high-voltage inverter, which makes the internal components of the inverter very easy to be damaged by insulation breakdown, affecting Normal production of sintering machine

[0004] 2. In actual operation, the louver design is poorly ventilated, the ventilation area is not large enough, and there is negative pressure in the inverter room and outdoor, resulting in overload operation of the fan on the top of the high-voltage inverter cabinet, and the fan motor is easily burned due to overheating, which affects the operation of the high-voltage inverter , thus affecting the normal production of the sintering machine

[0005] 3. In normal production, the room temperature cannot drop due to the continuous extraction of outdoor air, and the 5P air-conditioning compressor runs for a long time, and the air-conditioning compressor is easily damaged. Therefore, the present invention proposes a desulfurization and denitrification induced draft fan high-voltage frequency converter heat dissipation system to solve the existing problems. problems in technology

Images