Shielded cable for industrial control equipment

Abstract

The utility model discloses a shielded cable for industrial control equipment, which comprises a filling layer for supporting and insulating, five groups of cable main bodies are arranged on the inner end face of the filling layer at equal intervals, and first shielding layers are fixedly arranged on the outer end faces of the cable main bodies. According to the utility model, through a triple shielding structure of the first shielding layer, the second shielding layers and the third shielding layer, the shielding performance of the cable can be effectively improved, at the same time, multiple groups of second shielding layers in the buffer layer can form a sealed hollow cavity so as to form a buffer air spring, the buffer performance of the cable when the cable is impacted is effectively improved, and the service life of the cable is prolonged. And the tensile net layer and the tensile fibers are arranged in an elastic structure, so that the toughness of the cable can be improved from inside to outside, and the tensile performance of the cable is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable equipment, in particular to a shielded cable for industrial control equipment. Background Art

[0002] Shielded cables are transmission lines that use a metal mesh braid to encase the signal line. This design effectively blocks electromagnetic radiation and external electromagnetic interference. Shielded cables are uniquely designed and widely used. Through the design of the outer shield, they effectively isolate the influence of internal and external electromagnetic fields, providing excellent protection for various cable applications requiring electromagnetic compatibility control, electromagnetic interference prevention, and improved transmission quality.

[0003] For example, the utility model patent disclosed in publication number CN212750485U discloses a shielded cable for industrial control equipment, comprising: outer core conductors and inner core conductors, the outermost layer being an insulating outer sheath, the inner core conductors comprising three pairs of inner core conductors, each pair of inner core conductors being twisted together, the three pairs of inner core conductors being twisted together, a core wire being centered at the center of the three pairs of inner core conductors, each pair of inner core conductors being shielded from the other two pairs by a first shielding layer, the core wire and the three pairs of inner core conductors being shielded by a second shielding layer after being combined; a plurality of outer core conductors arranged circumferentially outside the second shielding layer, the outer core conductors being surrounded by an outer sheath, and a third shielding layer being disposed between the outer core conductors and the outer sheath. The shielded cable for industrial control equipment provided by this utility model has excellent electrical and mechanical properties, a simple structure, good shielding effect, and excellent high mobility, high conductivity, and bending properties.

[0004] Although the above-mentioned cables have certain shielding properties, the external protection and impact resistance of the cables are insufficient. At the same time, the overall toughness of the cables and the internal thermal insulation performance are also insufficient, which reduces the service life of the subsequent cables. Therefore, there is an urgent need for a shielded cable for industrial control equipment to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a shielded cable for industrial control equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shielded cable for industrial control equipment, comprising a filling layer for support and insulation, five groups of cable bodies being equidistantly arranged on the inner end surface of the filling layer, and a first shielding layer being fixedly arranged on the outer end surface of the cable body.

[0007] a buffer thermal insulation layer, the buffer thermal insulation layer being fixedly arranged on an outer end surface of the filling layer;

[0008] The protective outer layer is fixedly arranged on the outer end surface of the buffer insulation layer, and a wear-resistant woven mesh layer for protection is fixedly arranged on the outer end surface of the protective outer layer, and a tensile mesh layer is fixedly arranged on the inner end surface of the protective outer layer.

[0009] Preferably, the buffer insulation layer includes a tough layer, the inner end surface of the tough layer is equidistantly provided with tensile fibers, and the outer end surface of the tensile fibers is fixedly provided with a third shielding layer, the outer end surface of the third shielding layer is fixedly provided with a buffer layer, and the inner end surface of the buffer layer is equidistantly provided with a vacuum cavity, and the outer end surface of the buffer layer is fixedly provided with a second shielding layer.

[0010] Preferably, the wear-resistant braided mesh layer and the protective outer layer are both made of nylon, which can effectively improve the wear resistance and protective performance of the cable exterior.

[0011] Preferably, the material of the tensile mesh layer is PE, the material of the first shielding layer is tinned copper foil, and the material of the filling layer is glass fiber. The filling layer has the advantages of high temperature resistance, flame retardancy and corrosion resistance. It can withstand stretching and pressure under high temperature, is not easy to burn, and can effectively improve the flame retardancy of the cable inside.

[0012] Preferably, the second shielding layer and the third shielding layer are made of aluminum foil, and the buffer layer is made of polypropylene. The buffer layer has high elasticity and strength, excellent tensile strength and impact resistance, and can effectively buffer and disperse the vibration and load of the cable.

[0013] Preferably, the material of the toughness layer is XLPE, and the material of the tensile fiber is PVC. The toughness layer has excellent thermal insulation performance and also has good insulation performance, which can effectively improve the protection of the inside of the cable, and the tensile fiber has good tensile performance, which can effectively improve the toughness of the inside of the cable.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model has a triple shielding structure by arranging a first shielding layer, a second shielding layer and a third shielding layer, which can effectively improve the shielding performance of the cable. At the same time, multiple groups of second shielding layers inside the buffer layer can form a sealed hollow cavity, thereby forming a buffering air spring, which effectively improves the buffering performance of the cable when it is impacted, thereby improving the protection of the cable. The tensile mesh layer and the tensile fiber are both elastic structures, which can improve the toughness of the cable from the inside out, thereby improving the tensile performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the main body of the utility model;

[0017] Figure 2 It is a structural diagram of the main body of the utility model;

[0018] Figure 3 This is a schematic structural diagram of the buffer insulation layer of the present invention;

[0019] Figure 4 This is a schematic structural diagram of the buffer and thermal insulation layer of the present invention.

[0020] In the figure: 1-wear-resistant braided mesh layer, 2-protective outer layer, 3-tensile mesh layer, 4-buffer insulation layer, 5-first shielding layer, 6-cable body, 7-filling layer, 41-second shielding layer, 42-buffer layer, 43-vacuum cavity, 44-third shielding layer, 45-toughness layer, 46-tensile fiber. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The present invention provides an embodiment of a shielded cable for industrial control equipment, comprising a filling layer 7 for support and insulation, five groups of cable bodies 6 being equidistantly arranged on the inner end surface of the filling layer 7, and a first shielding layer 5 being fixedly arranged on the outer end surface of the cable body 6.

[0023] The buffer thermal insulation layer 4 is fixedly arranged on the outer end surface of the filling layer 7;

[0024] The protective outer layer 2 is fixedly arranged on the outer end surface of the buffer insulation layer 4, and a wear-resistant woven mesh layer 1 for protection is fixedly arranged on the outer end surface of the protective outer layer 2, and a tensile mesh layer 3 is fixedly arranged on the inner end surface of the protective outer layer 2.

[0025] The buffer insulation layer 4 includes a toughness layer 45, the inner end surface of the toughness layer 45 is equidistantly provided with tensile fibers 46, and the outer end surface of the tensile fibers 46 is fixedly provided with a third shielding layer 44, the outer end surface of the third shielding layer 44 is fixedly provided with a buffer layer 42, and the inner end surface of the buffer layer 42 is equidistantly provided with a vacuum cavity 43, and the outer end surface of the buffer layer 42 is fixedly provided with a second shielding layer 41.

[0026] The materials of the wear-resistant braided mesh layer 1 and the protective outer layer 2 are both nylon, which can effectively improve the wear resistance and protective performance of the cable exterior.

[0027] The material of the tensile mesh layer 3 is PE, the material of the first shielding layer 5 is tinned copper foil, and the material of the filling layer 7 is glass fiber. The filling layer 7 has the advantages of high temperature resistance, flame retardancy and corrosion resistance. It can withstand tension and pressure under high temperature, is not easy to burn, and can effectively improve the flame retardancy of the cable inside.

[0028] The second shielding layer 41 and the third shielding layer 44 are made of aluminum foil, and the buffer layer 42 is made of polypropylene. The buffer layer 42 has high elasticity and strength, excellent tensile strength and impact resistance, and can effectively buffer and disperse the vibration and load of the cable.

[0029] The material of the toughness layer 45 is XLPE, and the material of the tensile fiber 46 is PVC. The toughness layer 45 has excellent thermal insulation performance and also has good insulation performance, which can effectively improve the protection of the inside of the cable. The tensile fiber 46 has good tensile performance and can effectively improve the toughness of the inside of the cable.

[0030] Working principle: When in use, the triple shielding structure of the first shielding layer 5, the second shielding layer 41 and the third shielding layer 44 can effectively improve the shielding performance of the cable. At the same time, the multiple groups of second shielding layers 41 inside the buffer layer 42 can form a sealed hollow cavity, thereby forming a buffering air spring, which effectively improves the buffering performance of the cable when it is impacted, thereby improving the protection of the cable. The tensile mesh layer 3 and the tensile fiber 46 are both elastic structures, which can improve the toughness of the cable from the inside out, thereby improving the tensile performance of the cable.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shielded cable for industrial control equipment, comprising a filling layer (7) for support and insulation, five groups of cable bodies (6) equidistantly arranged on the inner end surface of the filling layer (7), and a first shielding layer (5) fixedly arranged on the outer end surface of the cable body (6), characterized in that: a buffer thermal insulation layer (4), the buffer thermal insulation layer (4) being fixedly arranged on the outer end surface of the filling layer (7); A protective outer layer (2) is fixedly arranged on the outer end surface of the buffer thermal insulation layer (4), and a wear-resistant woven mesh layer (1) for protection is fixedly arranged on the outer end surface of the protective outer layer (2), and a tensile mesh layer (3) is fixedly arranged on the inner end surface of the protective outer layer (2).

2. The shielded cable for industrial control equipment according to claim 1, characterized in that: The buffer thermal insulation layer (4) comprises a toughness layer (45), the inner end surface of the toughness layer (45) is equidistantly provided with tensile fibers (46), and the outer end surface of the tensile fibers (46) is fixedly provided with a third shielding layer (44), the outer end surface of the third shielding layer (44) is fixedly provided with a buffer layer (42), and the inner end surface of the buffer layer (42) is equidistantly provided with a vacuum cavity (43), and the outer end surface of the buffer layer (42) is fixedly provided with a second shielding layer (41).

3. The shielded cable for industrial control equipment according to claim 2, characterized in that: The wear-resistant braided mesh layer (1) and the protective outer layer (2) are both made of nylon.

4. The shielded cable for industrial control equipment according to claim 2, characterized in that: The material of the tensile mesh layer (3) is PE, the material of the first shielding layer (5) is tinned copper foil, and the material of the filling layer (7) is glass fiber.

5. The shielded cable for industrial control equipment according to claim 2, characterized in that: The second shielding layer (41) and the third shielding layer (44) are made of aluminum foil, and the buffer layer (42) is made of polypropylene.

6. The shielded cable for industrial control equipment according to claim 2, characterized in that: The material of the toughness layer (45) is XLPE, and the material of the tensile fiber (46) is PVC.

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