Fusing tube

Abstract

The invention relates to a fusing tube which comprises a tube body. A metal upper cover is sealed at the upper end of the tube body, and a metal lower cover is sealed at the lower end of the tube body. A fuse wire is arranged inside the tube body, and the fuse wire is respectively in electrical connection with the upper cover and the lower cover through an upper wire and a lower wire. A fluorescent ball is arranged at the joint of the fuse wire and the lower wire. An annular transparent window is arranged on the wall of the tube body corresponding to the fluorescent ball. An auxiliary drawing wire is in parallel connection at two ends of the fuse wire. Auxiliary blow pipes with the bottoms being opened are sleeved outside the fuse wire on the upper portion of the fluorescent ball and outside the upper wire, and the top ends of the auxiliary blow pipes are fixedly connected with the upper cover in a sealing mode. The lower wire is provided with a spring drawing wire in a series connection mode. The fusing tube is simple in structure, exquisite in design, capable of rapidly judging whether the fuse wire is fused or not, time-saving and labor-saving, and safe and reliable in fusing.

Description

technical field [0001] The invention relates to the field of power supply circuits, in particular to a fuse tube. Background technique [0002] During power maintenance, it is often necessary to judge whether the fuse tube in the circuit is blown. For lines that are exposed to the outside or have not been maintained for a long time, it is difficult to distinguish whether the fuse of the fuse tube is blown. Incomplete, there may be contact with electricity, which may lead to serious consequences. In addition, in the high-voltage power supply line, for the drop-out fuse tube, when the fuse in the fuse tube is blown, the entire drop-out fuse tube will fall from the connecting frame, thereby cutting off the circuit to protect the equipment. In reality, because the drop-out fuse is in an exposed environment and has been exposed to wind, sun and rain for a long time, the socket of the drop-out fuse has been oxidized and corroded and accumulated a lot of dust, resulting in the dro...

AI Technical Summary

Problems solved by technology

In reality, because the drop-out fuse is in an exposed environment and has been exposed to wind, sun and rain for a long time, the socket of the drop-out fuse has been oxidized and corroded and accumulated a lot of dust, resulting in the drop-out fuse The success rate when falling is greatly reduced, so that it is difficult to judge which drop-type fuse is damaged from whether the drop-type fuse is dropped or not when the power is repaired, causing difficulties for maintenance personnel and wasting maintenance time

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