Traction joint and method preventing steam from entering rubber sleeve cable

Abstract

The invention discloses a traction joint which is characterized in that the traction joint is a steel integrated piece and comprises a main body part and connecting parts located on the left side and the right side of the main body part. The main body part is of a cylinder shape with an axis arranged along the left direction and the right direction, the diameter of the main body part is 1-1.2 mm less than the diameter of a cable to be extruded out. Water stopping grooves are formed in the main body part, the number of the water stopping grooves is 2-8. The water stopping grooves are sequentially arranged at same intervals from the left to the right along the axial direction of the main body part. The connecting parts are divided into a left connecting part and a right connecting part according to the different positions of left and right. The left connecting part and the right connecting part are corresponding in shape and structure, and symmetrically arranged on the left side and the right side of the main body part. A left cable hole is formed between the left connecting part and the main body part, and a right cable hole is formed between the right connecting part and the main body part.

Description

technical field [0001] The invention relates to the field of cable processing and production, in particular to a traction joint used to connect a traction line and an extrusion line and a method for preventing steam from entering a rubber-sheathed cable. Background technique [0002] Compared with plastic-coated cables, rubber-sheathed cables (rubber-coated cables) have many advantages: good flexibility, oil resistance, torsion resistance, wear resistance, etc. During the production of rubber-coated cables, the conductor is extruded and covered with a rubber sleeve through the mold core, and then the rubber is vulcanized through a pipeline filled with high-pressure steam. The existing vulcanization equipment is in the water-vapor balance mode, so that the cable has Sufficient cooling avoids rubber foaming and rupture due to excessive pressure difference between the inside and outside of the cable when it is out of the seal. However, in the production process, it needs to be...

AI Technical Summary

Problems solved by technology

When the joint passes through the vulcanized pipeline, the vulcanized section in the pipeline is full of high-temperature steam, and the high-temperature steam easily enters the joint along the small gap at the joint. The length of the joint in the axial direction is longer, and the permeable area in the circumferential direction is larger Increased risk of water seepage

Secondly, during the traction process, the joints must bear a certain amount of tension, which may easily lead to gaps in the waterproof coating of the joints.

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