Jacketed torque balanced electromechanical cable
An electromechanical cable that is crush-resistant and torque balanced is provided as well as a method for manufacturing a crush-resistant and torque balance electromechanical cable. The cable can include a core having a conductor surrounded by a first jacket layer, a second jacket layer surrounding the first jacket layer, a first armor layer surrounding second jacket layer, a third jacket layer surrounding the first armor layer, a second armor layer surrounding the third jacket layer, and a fourth jacket layer surrounding the second armor layer. The first armor layer can be constructed as a plurality of wires and compressed partially into the second jacket layer. The second armor layer can be constructed from a plurality of three-wire strands and/or single wires and compressed partially into the third jacket layer. The three-wire strands can symmetric or asymmetric and can be compacted or non-compacted.
1. An electromechanical cable comprising:
a core comprising at least one conductor and a first jacket layer surrounding said at least one conductor;
a second jacket layer surrounding said core;
a first armor layer surrounding said second jacket layer, said first armor layer comprising a plurality of wires wrapped around said second jacket layer and compressed to indent said second jacket layer;
a third jacket layer surrounding said first armor layer, said third jacket layer substantially surrounding said wires of said first armor layer;
a second armor layer surrounding said third jacket layer, said second armor layer comprising a plurality of 3-wire strands wrapped around said third jacket layer, and wherein said plurality of 3-wire strands comprises symmetrical 3-wire strands and asymmetrical 3-wire strands alternatively arranged; and
a fourth jacket layer surrounding said second armor layer.
2. The electromechanical cable of claim 1 wherein at least one of said plurality of 3-wire strands is compacted.
3. The electromechanical cable of claim 1 wherein said asymmetrical 3-wire strands comprise two wires having a first diameter and one wire comprising second diameter, wherein said first diameter is less than said second diameter.
4. The electromechanical cable of claim 1 wherein said first armor layer is wrapped around said second jacket layer with a first lay direction and said second armor layer is wrapped around said third jacket layer with a second lay direction, and wherein said first lay direction is opposite said second lay direction.
5. The electromechanical cable of claim 1 wherein said first armor layer comprises round wires.
6. The electromechanical cable of claim 1 wherein said first armor layer comprises trapezoid-shaped wires.
7. The electromechanical cable of claim 1 wherein said first armor layer comprises Z-shaped wires.
8. The electromechanical cable of claim 1 wherein said first armor layer comprises H-shaped wires.
9. An electromechanical cable comprising:
a core conductor comprising a plurality of conductor wires;
a first jacket layer surrounding said core conductor;
a second jacket layer surrounding said first jacket layer;
a first armor layer comprising a plurality of wires wrapped around said second jacket layer with a first lay direction and compressed to indent said second jacket layer;
a third jacket layer surrounding said first armor layer;
a second armor layer comprising a plurality of wires wrapped around said third jacket layer with a second lay direction and compressed to indent said second jacket layer, said second armor layer comprises a plurality of symmetrical 3-wire strands and a plurality of asymmetrical 3-wire strands alternatively arranged; and
a fourth jacket layer surrounding said second armor layer, said fourth jacket layer having a smooth outer surface;
wherein said first lay direction is opposite said second lay direction.
10. The electromechanical cable of claim 9 wherein said asymmetrical 3-wire strands comprise two wires having a first diameter and one wire comprising second diameter, wherein said first diameter is less than said second diameter.