Stator leading-out wire structure of air internal-cooling generator

Abstract

The invention provides a stator leading-out wire structure of an air internal-cooling generator, which adopts a hollow conductive copper bar with a section shaped like a Chinese character 'ri', forms a U-shaped loop ventilating duct inside, and can generate internal circulation through pressure difference by means of special air duct design and the characteristic that fan pressure difference exists between aleading-out wire box and a fan front wind area of the generator. Cold air is led into the copper bar from an insulation box at the head end of the lead, flows through the whole copper bar and flows out of a front wind area of a generator at the head end of the lead, heat consumption generated by the copper bar is directly taken away by cooling air flowing through a conductor, air in the whole main lead is directly cooled, the heat dissipation effect can be effectively improved, and the purpose of controlling temperature rise is achieved. And the temperature rise meets the national standard and standard requirements.

Description

technical field [0001] The invention relates to the technical field of turbogenerators, in particular to a stator lead-out wire structure of an air-internal cooling generator. Background technique [0002] The lead-out wires of large-scale turbogenerators are mainly used to lead out electric energy. They are the key components of generators and have the characteristics of high voltage and large current. It is relatively large, and there is a strong alternating magnetic field around the lead wires, which will cause a concentration force between the lead wires and cause a safety hazard, especially when the generator is running under abnormal conditions, the heat and concentration force of the lead wires will be greater, such as Failure to efficiently dissipate heat and fix it effectively may cause serious accidents. [0003] Therefore, the design of the lead-out line needs to consider both ventilation and cooling and mechanical fixation. In the past, the lead-out line was loc...

AI Technical Summary

Problems solved by technology

[0002] The lead-out wires of large-scale turbogenerators are mainly used to lead out electric energy. They are the key components of generators and have the characteristics of high voltage and large current. It is relatively large, and there is a strong alternating magnetic field around the lead wires, which will cause a concentration force between the lead wires and cause a safety hazard, especially when the generator is running under abnormal conditions, the heat and concentration force of the lead wires will be greater, such as If it cannot dissipate heat efficiently and fix it effectively, it may cause serious accidents

[0003] Therefore, the design of the lead-out line needs to consider both ventilation and cooling and mechanical fixation. In the past, the lead-out line was located in the cold wind area of ​​the generator and could be cooled naturally by the cold air from the cooler. For reverse ventilation, the lead wires are placed in the hot air area of ​​the generator, and the space inside the generator foundation is limited, the ventilation conditions in the lead wire area are poor, and it is difficult to form heat exchange with the outside world. If the heat cannot be reliably dissipated, the lead wires may burn out and cause serious accidents

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