Air-cooling dry type air-core reactor structure

Abstract

The invention discloses an air-cooling dry type air-core reactor structure. The air-cooling dry type air-core reactor structure comprises a reactor with a cooling passageway, a ventilation pipeline communicated with the cooling passageway, and an air supply device communicated with the ventilation pipeline. The ventilation pipeline comprises a horizontal section pipeline, an arc section pipeline and a vertical section pipeline which are sequentially communicated. A first air flow passageway and a second air flow passageway are formed in the end, away from the arc section pipeline, of the vertical section pipeline. The first air flow passageway and the second air flow passageway are connected with the reactor, and then the first air flow passageway and the second air flow passageway are communicated with the cooling passageway in a butt joint mode. Meanwhile, by mean of the optimization design of the structures of a protection piece and the ventilation pipeline, air entering the cooling passageway can be uniform, and therefore the cooling efficiency and the cooling uniformity of the whole cooling passageway are improved, safety of the reactor is protected, and the service life of the reactor is prolonged.

Description

technical field [0001] The invention relates to the technical field of reactors, in particular to designing an air-cooled dry-type air-core reactor structure. Background technique [0002] The dry-type multi-encapsulated air-core reactor is formed by parallel connection of multiple coaxial cylindrical coils covered with epoxy glass fiber. The vertical air passage is isolated between the enclosed coils by epoxy lead bars, and the reactor is internally encapsulated. Most of the heat generated by the circulation of the coil and part of the heat of the innermost / outermost enclosing coil are transferred to the outer air space by heat convection through the annular cooling air passage. A fan is used for forced air cooling of the cylindrical multi-encapsulated air-core reactor. If the wind speed of the air passage between each envelope is uneven, it will easily lead to overheating of some envelopes and local points, thereby exceeding the temperature rise limit, which will directly ...

AI Technical Summary

Problems solved by technology

A fan is used for forced air cooling of the cylindrical multi-encapsulated air-core reactor. If the wind speed of the air passage between each envelope is uneven, it will easily lead to overheating of some envelopes and local points, thereby exceeding the temperature rise limit, which will directly affect the reactor. safe operation of the system

At the same time, the air-core reactor is easily affected by environmental factors, especially the influence of rainwater. When the rainwater falls on the surface of the reactor envelope, it will significantly reduce the withstand voltage level of the reactor. A short circuit between them will endanger the normal operation of the reactor

At present, the patent 201220373229.6 discloses a hollow split reactor. A fan is installed at the lower end of the reactor, and its air outlet mask is located at the lower end of the reactor coil. Uneven wind speed in the air duct will easily lead to poor heat dissipation effect of the reactor partial encapsulation, and low fan efficiency

In addition, patent 201320643492.7 discloses a rainproof grille for a dry-type air-core reactor, and patent 201320825965.5 discloses a rainproof cover for a dry-type reactor. The influence of rain on the reactor, however, the design does not consider the influence of the rain shelter on the heat dissipation capacity of each envelope of the reactor, which may easily lead to uneven wind speed in the air passage of the reactor, and poor heat dissipation of some envelopes, affecting the safe operation of the reactor

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