Low-voltage insulated wire waterproofing device

Abstract

The invention discloses a low-voltage insulation lead wire waterproof apparatus. The apparatus comprises a main installation sleeve whose lower end can pass through a to-be-protected ammeter box penetrating hole, the upper end of the main installation sleeve is annularly provided with a clamping table whose external diameter is greater than the diameter of the to-be-protected ammeter box penetrating hole, the main installation sleeve is internally provided with an installation through hole used for a wire to pass through, the outer surface of the lower segment of the main installation sleeve is provided with an external thread and is provided with a clamping sleeve in a threaded mode, the outer surface of the clamping sleeve is sleeved by a cutting sleeve, the inner surface of the lower end of the clamping sleeve is at least provided with two clamping pawls which can be open and closed so as to enable the wire to pass through and can clamp the penetrating wire, the main installation sleeve is provided with a locking sleeve which can enable the cutting sleeve to slide downwards to enable the clamping pawls to be closed so as to clamp the wire in a threaded mode. The structure is simple, the assembling and the application are convenient, the clamping mode is reliable, a pathway along which water penetrates upwards is cut off by effectively clamping the wire, and the service life of an ammeter box switch is greatly prolonged.

Description

technical field [0001] The invention relates to a low-voltage insulated wire waterproof device. Background technique [0002] The meter box is widely used in residential construction and civil electricity transformation. Multiple meters can be installed, and single household switches, terminal blocks, control switches outside the box, leakage protection switches, etc. can be installed in the meter box, which can be directly fixed on the wall or installed On a pole. The wires generally penetrate into the meter box from the piercing holes reserved at the bottom of the meter box. After the wires are used for a long time, the skin of the wires is prone to cracks due to weathering. In rainy and snowy weather, water will penetrate into the wires from the cracks and flow along the wires. The wires in the meter box seep upwards into the switch. At present, one of the main causes of damage to the leakage protection switch in the meter box is that rainwater, dew and other moisture se...

AI Technical Summary

Problems solved by technology

The wires generally penetrate into the meter box from the piercing holes reserved at the bottom of the meter box. After the wires are used for a long time, the skin of the wires is prone to cracks due to weathering. In rainy and snowy weather, water will penetrate into the wires from the cracks and flow along the wires. The wires in the meter box seep upwards into the switch. At present, one of the main causes of damage to the leakage protection switch in the meter box is that rainwater, dew and other moisture seep upwards into the switch along the wires, causing grounding, short circuit, and component oxidation. In order to solve the aforementioned problems, currently the main Prevent this hidden danger by making waterproof bends on the wires, wrapping high-level contacts and waterproofing, but the effect is generally not good

Due to the water ingress in the switch, a large number of low-voltage maintenance reports occurred in rainy and snowy weather, which increased the amount of operation and maintenance and replacement of low-voltage residual current protectors, resulting in multiple power outages in the station area, affecting the reliability of power supply at the low-voltage side, and greatly increased electricity cost

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