Process Analysis of Cable Armored Machine
Release time:
2021-10-15
The type, function, model, structure and use characteristics of the external protective layer of the 1. cable armored machine. 1, cable armored machine sheath classification Cable protective layer can generally be divided into internal protective layer and external protective layer, tightly wrapped in the cable insulation layer of the sheath is called the internal protective layer, the cover outside the internal protective layer is called the external protective layer.
The type, function, model, structure and use characteristics of the external protective layer of the 1. cable armored machine.
1, cable armored machine sheath classification
Cable protective layer can generally be divided into internal protective layer and external protective layer, tightly wrapped in the cable insulation layer of the sheath is called the internal protective layer, the cover outside the internal protective layer is called the external protective layer.
2, cable armored machine external protection layer role.
The outer cover layer of the cable armoring machine is mainly composed of an inner lining layer, a glove layer and an outer cover layer.
(1) Lining
Function: Prevent the internal protective layer from hitting the armor layer during the armor layer. In the routing process, it can prevent the invasion of external corrosive media, prevent the metal sheath (internal protective layer) from contacting the external corrosive media, and extend the service life of the cable.
(2) Glove layer
Function: Ensure the integrity of the internal protective layer and prevent mechanical damage that may occur during wiring or operation to withstand part of the external force.
(3) External protective layer
Function: mainly protect the mecha layer to prevent damage to the mecha layer during laying. An external protective layer consisting of a plastic cover prevents the glove layer from corroding during operation.
The cable protection layer is to ensure that the cable maintains good electrical performance for a long time. Once the protection layer is damaged, the cable is broken and cannot continue to work. Therefore, the life of the cable depends to a large extent on the life of the cable protection layer, and the life of the cotton cable protection layer depends to a large extent on the manufacturing quality of the protection layer.
3, cable armored machine a variety of external protection layer structure.
(1) Metal sleeve universal cable sheath structure
(2) Non-metallic sleeve universal cable sheath structure
(3) Sheath structure of lead sheathed oil-filled cable
(4) Steel pipe cable sheath
Non-metallic sleeve universal cable sheath structure
Model External Protection Layer Structure
Lining layer The quilt layer outside the glove layer.
12 winding type: plastic tape or nonwoven
extrusion: plastic sleeve
interlocking gloves pvc jacket
22 Pair Strip Gloves PVC Jacket
23 Polyethylene Jacket
32 Monofilament Gloves PVC Jacket
33 Polyethylene Jacket
53 Single Pleated Strip Longitudinal Gloves Polyethylene Jacket
62 pairs of aluminum tape (aluminum tape) gloves PVC jacket
63 Polyethylene Jacket
42 Plastic Sleeve Single Thick Silk Gloves PVC Jacket
43 Polyethylene Jacket
41 Adhesive coatings. Polypropylene rope or cable bitumen. Impregnated horses. Cable asphalt. chalk powder
441 double rough round silk gloves
241 Double Steel Strip-Single Rough Round Wire Gloves
4. Use of cable protection layer
Table 2 Scope of Use of General External Protective Layer for Non-metallic Sleeve Cables
Model Name Mainly Applicable Routing Location
routing method special environment
Indoor tunnel cable trench pipeline buried shaft underwater flammable severe corrosion tension
2. common cable sheath materials
The materials commonly used for the external protective layer of the cable armored machine are basically four categories: fiber materials, metal materials and plastics.
1. Fiber materials.
(1) Paper: Cut into 0.12mm thick cable paper.
(2) Horse: Cable horse made of jute.
2. Metal materials.
The metal materials used for the outer protective layer are mainly steel strips, wires, aluminum strips (aluminum strips), etc. (1) Strip
The steel strips are cold-rolled strips, painted strips and galvanized strips.
1) Cold rolled strip steel
It is made of hot-rolled steel plate and is mainly used for processing painted steel plate and galvanized steel plate of cable armor layer.
2) Galvanized steel sheet
Galvanized steel sheet is made of a galvanized layer on a cold-rolled steel sheet. The methods were hot dip gold (r) and electroplating (d).
The size and mechanical properties of the steel strip are the same as those of the cold-rolled steel plate.
The steel galvanized layer should be uniform and complete, and the zinc layer should be peeled off, cracked, rusted, and electroplated without leakage, but defects such as individual electroplating points are allowed.
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