A kind of steel wire armored power cable and its processing method

Abstract

The invention discloses a steel wire armored power cable and a processing method thereof. The steel wire armored power cable comprises a cable core. The cable core is provided with an inner lining layer, a steel wire armored layer and an outer sheath layer. The processing method of the steel wire armored power cable comprises the following steps of (1), firstly intertwisting 3-5 insulated wire cores and a filler for forming a cable core through cladding; (2), then wrapping the cable core by the inner lining layer through squeezing; (3), performing armoring, namely performing pre-armoring to the head end of the cable core, and performing supplementary armoring on the back end; and (4), performing pre-twisting of rotating by 3-4 cycles in a steel wire armoring direction when the head end of the outer sheath layer is pulled, keeping a certain tension on the back end and fixing the cable core for preventing untwisting. The steel wire armored power cable performs functions of totally eliminating twisting generated on the steel wire, and eliminating an inner stress of the armored steel wire. After armoring of the steel wire, deformation, loosening and irregularity caused by the inner stress after armoring of the steel wire are prevented. The front end and the back end of the wire core of the finished cable is not limited by an external force, and the effective length of the cable core is ensured through pre-armoring and supplementary armoring.

Description

technical field

[0001] The invention relates to a power cable, in particular to a steel wire armored power cable and a processing method thereof. Background technique

[0002] The current power cables generally do not use steel wires for armoring, resulting in low protection strength and easy damage.

[0003] In addition, even if steel wire is used for armoring, the nominal diameter of the steel wire used is less than 2.5mm. Since the steel wire armor is mainly placed on the cage stranding machine for steel wire armoring, each pay-off reel of the cage stranding machine has a twist-back function. The steel wire does not twist during the armoring process, the production technology is relatively mature, and the product quality is guaranteed. However, when the nominal diameter of the armored steel wire is greater than or equal to 2.5mm, the outer diameter of the cable core is relatively large, and the size of the reel of the cage stranding machine cannot meet the requirements f...

Examples

Embodiment Construction

[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0029] see figure 1 , The steel wire armored power cable provided by the present invention includes a cable core, and an inner lining layer 200 , a steel wire armor layer 300 and an outer coating layer 400 are sequentially provided outside the cable core from inside to outside.

[0030] The cable core specifically includes 3-5 insulated cores 110 , fillers 120 and tapes 130 , and 3-5 insulated cores 110 and fillers 120 are twisted and covered with the tapes 130 to form a cable core.

[0031] The inner liner 200 is specifically a sheath, which is tightly extruded on the cable core to protect the cable core.

[0032] The steel wire armor layer 300 covers the inner lining layer 200 and has a steel wire winding structure, and the nominal diameter o...

technical field

[0001] The invention relates to a power cable, in particular to a steel wire armored power cable and a processing method thereof. Background technique

[0002] The current power cables generally do not use steel wires for armoring, resulting in low protection strength and easy damage.

[0003] In addition, even if steel wire is used for armoring, the nominal diameter of the steel wire used is less than 2.5mm. Since the steel wire armor is mainly placed on the cage stranding machine for steel wire armoring, each pay-off reel of the cage stranding machine has a twist-back function. The steel wire does not twist during the armoring process, the production technology is relatively mature, and the product quality is guaranteed. However, when the nominal diameter of the armored steel wire is greater than or equal to 2.5mm, the outer diameter of the cable core is relatively large, and the size of the reel of the cage stranding machine cannot meet the requirements f...

Examples

Embodiment Construction

[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0029] see figure 1 , The steel wire armored power cable provided by the present invention includes a cable core, and an inner lining layer 200 , a steel wire armor layer 300 and an outer coating layer 400 are sequentially provided outside the cable core from inside to outside.

[0030] The cable core specifically includes 3-5 insulated cores 110 , fillers 120 and tapes 130 , and 3-5 insulated cores 110 and fillers 120 are twisted and covered with the tapes 130 to form a cable core.

[0031] The inner liner 200 is specifically a sheath, which is tightly extruded on the cable core to protect the cable core.

[0032] The steel wire armor layer 300 covers the inner lining layer 200 and has a steel wire winding structure, and the nominal diameter o...

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