Transformer cabinet with ventilation and explosion prevention functions
A technology for transformer cabinets and transformers, which is applied to the cooling/ventilation of substations/switchgears, substations/distribution device casings, etc., can solve the problems affecting the normal operation of transformers used in the transformer cabinets, and achieve the solution of sealing, ventilation and heat dissipation. Contradictions, improve the operating environment, prevent casualties and accidents
Active Publication Date: 2014-03-12
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology
However, station transformers are usually placed in closed metal armored transformer cabinets, which need to generate a lot of heat during operation. Since the heat cannot be effectively dissipated to the outside of the transformer cabinet and gradually accumulates, the small environment in the closed metal armored cabinet occurs. The change of this small environment greatly affects the normal operation of the station transformer in the transformer cabinet
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0020] A transformer cabinet with ventilation and explosion-proof function, in which a cooling array hole 6 is directly punched out at the rear of the closed transformer cabinet 1, and the size and shape of the cooling array hole can be designed according to the load loss of the station transformer; An explosion-proof baffle 5 is hinged through the hinge 4 on the heat dissipation array hole, and the explosion-proof baffle completely covers the heat dissipation array hole; a row of guide rods 8 is supported between the lower end of the explosion-proof baffle and the transformer cabinet, and each guide rod There is a spring 7 on the upper sleeve. Under normal operating conditions, the heat inside the t...
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The invention relates to a transformer cabinet with ventilation and explosion prevention functions, wherein a heat dissipation array hole is directly punched at the back part of the transformer cabinet, an explosion prevention baffle plate is hinged on the heat dissipation array hole on the inner side of the transformer cabinet, the explosion prevention baffle plate can completely cover the heat dissipation array hole, a gap which is communicated with the heat dissipation array hole is retained between the lower end of the explosion prevention baffle plate and the transformer cabinet and an air outlet hole is arranged at the top of a transformer. The transformer cabinet can enable a system to achieve the ventilation and explosion prevention functions through natural circulation of air and evacuate heat to the outside of the transformer cabinet through circulation of the system, thereby improving an operation environment of the transformer for a station. In addition, the transformer cabinet can timely close the heat dissipation array hole at the back part of the transformer cabinet when a failure occurs so as to prevent the occurrence of casualty accidents of staff, thereby solving the contradiction that the transformer cabinet requires good sealing property and the transformer for the station requires the ventilation and heat dissipation.
Description
technical field [0001] The invention belongs to the field of electric power and relates to a transformer, in particular to a transformer cabinet with ventilation and explosion-proof functions. Background technique [0002] Many station transformers in substations are installed in closed metal armored transformer cabinets. The reason is that the transformer cabinet itself needs to have high protection requirements. When a short circuit fault occurs inside the transformer cabinet, a large number of Arc and gas, in order to avoid harm to the staff outside the transformer cabinet when a fault occurs in the transformer cabinet, it must be satisfied that the arc and gas generated by the fault can be guided to the area where the staff will not pass by when the fault occurs, so as to avoid personal injury Occurrence of fatal accidents. However, station transformers are usually placed in closed metal armored transformer cabinets, which need to generate a lot of heat during operation...
Claims
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IPC IPC(8): H02B1/56H02B1/26
Inventor 曹永进李武兴李锦吴东李光鹏赵大兴王永强李卫军
Owner STATE GRID TIANJIN ELECTRIC POWER