Cable connector moisture-roof cover

Abstract

The invention relates to a cable connector moisture-roof cover. The cable connector moisture-roof cover comprises a line tube and a driving tube. The side circumferential wall of the line tube is symmetrically provided with unidirectional air exhaust holes. All the unidirectional air exhaust holes are externally covered by an arc-shaped air chamber made of elastic material in a sealing way. The arc-shaped air chamber is also provided with unidirectional air vent holes. The driving tube coaxially sleeves the external part of the line tube. The driving tube can freely rotate relative to the line tube. The internal circumferential wall of the driving tube is elliptically cylindrical. The external circumferential wall of the driving tube is cylindrical. Flow guide blades are equidistantly distributed on the external circumferential wall of the driving tube. The driving tube is also provided with air guide holes which extend along the direction of the elliptically cylindrical semi-minor axis. The cable connector moisture-roof cover is exquisite in structure and small in space occupation so that water vapor of the connector can be effectively removed, the internal part of the cable can be maintained to be dry and the service life of the cable can be prolonged.

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 on...

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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