Molded transformer provided with fire extinguishing device

Abstract

The present invention relates to a molded transformer provided with a fire extinguishing device. According to the present invention, a lower frame (14) is positioned on a base (10), and an upper frame (20) is supported by the lower frame (14) and provided at the upper part of the lower frame (14). The lower frame (14) and the upper frame (20) are connected by a tie rod (28), and a steel core (30) is supported by the lower frame (14), the upper frame (20) and the tie rod (28). Secondary coils (38) are provided to surround the steel core (30), and primary coils (34) are provided to allow the secondary coils (38) to penetrate the inside thereof. A case (50) is provided at one end part of the lower frame (14), and fluid containers (52) are provided in an area partitioned by the case (50). A section of a pipe (54) connected with the fluid containers (52) extends along the upper frame (20). A nozzle (56) is provided at the pipe (54) for spraying fluid between the primary coil (34) and the secondary coil (38) or between the outer surfaces of the primary coils (34). According to the present invention, since a fire-extinguishing fluid is directly sprayed at the primary coils (34) and the secondary coils (38) at which a fire can occur, a fire-extinguishing operation can be performed more rapidly.

Description

technical field [0001] The present invention relates to a molded transformer, and more specifically, to a molded transformer equipped with a fire extinguishing device capable of quickly extinguishing a fire when the molded transformer itself is on fire. Background technique [0002] Molded transformers are encased in epoxy to insulate the transformer's primary and secondary coils from surrounding components. Generally, a coil is placed in a mold in a wound state, epoxy resin is injected into the mold, and the coil is wrapped with the epoxy resin to form a molded transformer. Although such a molded transformer has a primary coil and a secondary coil covered with epoxy resin, there is a risk of fire due to sparks or the like generated during operation. [0003] That is, since the transformer carries a high voltage, it is difficult to extinguish the fire when a fire occurs during the operation of the transformer. Especially because of the high voltage, workers trying to extin...

AI Technical Summary

Problems solved by technology

However, the problems in the prior art documents are that since the gas cannot be injected directly to the surroundings of the coil where the fire occurs, the coil that actually caught fire will be burned due to the fire, and even the surrounding parts will be destroyed by the fire.

[0005] Moreover, once the transformer is installed, it will be used for a long time, usually more than ten years, and in the prior art literature, the structure used for fire extinguishing is not located in the inner space where the transformer is installed, but outside, so the structure for fire extinguishing is easy. Aging due to the influence of the external environment, when it is actually needed, it cannot operate

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