Cable gland moisture shield

Abstract

The invention relates to a moisture-proof cover for a cable joint. The cable joint moisture-proof cover includes a cable pipe and a driving pipe; one-way air suction holes are symmetrically opened on the side wall of the line pipe, and outside each of the one-way air suction holes The airtight cover has an arc-shaped air chamber made of elastic material; a one-way exhaust hole is also opened on the arc-shaped air chamber; the drive tube is coaxially sleeved outside the line pipe, so The driving tube can rotate freely relative to the wire tube; the inner peripheral wall of the driving tube is in the shape of an oval cylinder, and the outer peripheral wall of the driving tube is cylindrical; Guide vanes; the drive tube is also provided with an air guide hole extending along the semi-short axis of the elliptical cylinder; the cable joint moisture-proof cover is exquisite in structure and takes up little space, and can effectively remove water vapor at the joint and keep the cable The interior is dry, prolonging the life of the cable.

Description

technical field [0001] The invention relates to a cable protection device, in particular to a moisture-proof protection device for a cable joint. Background technique [0002] XLPE cables have been produced and used for decades. This kind of cable uses non-polar materials, has good insulation performance, can withstand the impact of overload and large short-circuit capacity, and has many advantages. Now it has been widely used However, in the process of use, it is found that water branches are prone to appear after the cable enters the water, and the water branches are likely to cause cable insulation breakdown; for this reason, people have come up with a variety of solutions, such as filling the cable to prevent water intrusion, but This method increases the weight of the cable and brings inconvenience to transportation and assembly; there are other methods that pass current to the water-inlet cable, heat the battery core, and press dry and filtered compressed gas from one ...

AI Technical Summary

Problems solved by technology

[0002] XLPE cables have been produced and used for decades. This kind of cable uses non-polar materials, has good insulation performance, can withstand the impact of overload and large short-circuit capacity, and has many advantages. Now it has been widely used However, in the process of use, it is found that water branches are prone to appear after the cable enters the water, and the water branches are likely to cause cable insulation breakdown; for this reason, people have come up with a variety of solutions, such as filling the cable to prevent water intrusion, but This method increases the weight of the cable and brings inconvenience to transportation and assembly; there are other methods that pass current to the water-inlet cable, heat the battery core, and press dry and filtered compressed gas from one end to discharge water from the other end. Although these methods can remove the water vapor inside the cable, the operation is complicated and increases too much cost; with the replacement of the cable, the water tree branch phenomenon in the cable has been improved, but the water tree branch phenomenon at the cable joint still occurs frequently. It brings a lot of inconvenience to the normal use of the cable

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