Electrical engineering cable

Abstract

An electrical engineering cable comprises a cable surface main body, a plurality of cable core main bodies and a filling material, the cable surface main body comprises a coating cavity, the plurality of cable core main bodies are arranged in the coating cavity, and the coating cavity is filled with the filling material, so that the interior of the coating cavity is in a full state. According to the electrical engineering cable, the wrapping cavity of the cable outer surface main body is filled with the filler, so that the cable outer surface main body can be in a round state, the deformation of the cable outer surface main body is small when the cable outer surface main body is extruded by external force, and therefore, the cable outer surface main body is not easy to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an electrical engineering cable. Background Art

[0002] When the conductor of the cable is multi-core, after these insulated cores or pairs are cabled, there is often a problem that there are many gaps between the core and its outer surface layer. In this case, when the cable is subjected to an external extrusion force, the deformation amount of its outer surface layer will relatively increase, resulting in the outer surface layer being more easily damaged. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide an electrical engineering cable, when subjected to an external extrusion force, the main body of the cable outer surface has a small deformation, so the main body of the cable outer surface is not easily damaged.

[0004] The utility model provides an electrical engineering cable, which includes a cable outer surface main body, a plurality of core main bodies and filling materials. The cable outer surface main body includes a covering cavity, and a plurality of the core main bodies are arranged in the covering cavity, and the filling materials are filled in the covering cavity to make the inside of the covering cavity in a full state.

[0005] In one embodiment, the core main body includes a cable conductor, an insulating layer and a flame retardant layer. The insulating layer covers the cable conductor, and the flame retardant layer covers the insulating layer.

[0006] In one embodiment, the cable conductor includes a plurality of fine bare copper wires, and the plurality of fine bare copper wires are stranded by a special stranding method for drag chain applications to form the cable conductor.

[0007] In one embodiment, the cable outer surface main body includes a reinforced inner sheath, a tape and an outer sheath. The covering cavity is opened in the reinforced inner sheath, the tape covers the reinforced inner sheath, and the outer sheath covers the tape.

[0008] In one embodiment, the reinforced inner sheath includes a polytetrafluoroethylene layer, an armor layer and a shielding layer. The covering cavity is opened in the polytetrafluoroethylene layer, the armor layer covers the polytetrafluoroethylene layer, and the shielding layer covers the armor layer.

[0009] In one embodiment, the outer sheath includes a PE material layer, a PVC material layer and an acid and alkali resistant material layer. The PE material layer covers the tape, the PVC material layer covers the PE material layer, and the acid and alkali resistant material layer covers the PVC material layer.

[0010] The electrical engineering cable provided by the present utility model can make the main body of the cable appearance round by filling filler in the coating cavity of the main body of the cable appearance. When being extruded by external force, the deformation of the main body of the cable appearance is small. Therefore, the main body of the cable appearance is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic structural diagram of the electrical engineering cable provided by the present utility model.

[0013] Figure 2 For the present utility model Figure 1 It is a schematic structural diagram of the enhanced inner sheath.

[0014] Figure 3 For the present utility model Figure 1 It is a schematic structural diagram of the outer sheath. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The specific embodiments of the present utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the description of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0016] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0017] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0018] The terms "first", "second", "third", etc. are only used to distinguish components with similar attributes, rather than indicating or implying relative importance or a specific order.

[0019] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the elements listed, it may also include other elements not specifically listed.

[0020] Please refer to Figure 1 , the electrical engineering cable provided by the present utility model includes a cable outer surface main body, a plurality of core main bodies 1 and a filler 2. The cable outer surface main body includes a covering cavity. A plurality of core main bodies 1 are arranged in the covering cavity, and the filler 2 is filled in the covering cavity so that the inside of the covering cavity is in a full state.

[0021] It can be known that the cable may include a plurality of core main bodies 1. Among them, a plurality can be understood as not less than two. The core main body 1 can be cylindrical. A plurality of core main bodies 1 can be twisted together or not. Whether twisted or not, it is difficult for a plurality of core main bodies to fill the covering cavity of the cable outer surface main body. In this case, when the cable outer surface main body is squeezed, the deformation range is larger and it is more likely to be damaged. After filling the filler 2 in the covering cavity, the inside of the covering cavity is in a full state, so that the cable outer surface main body can well maintain a round state, can well reduce the deformation amount when the cable outer surface main body is squeezed, and thus well avoid the damage of the cable outer surface main body. When a plurality of core main bodies 1 are twisted together, a plurality of core main bodies 1 can be located at the center position of the covering cavity of the cable outer surface main body, and the filler 2 is filled between the core main bodies 1 and the inner wall surface of the covering cavity. When a plurality of core main bodies 1 are not twisted together, the filler 2 is also filled between adjacent core main bodies. The filler can be a flame-retardant hemp rope, and the flame-retardant hemp rope can further improve the overall flame-retardant performance.

[0022] Please refer to Figure 1 , in some embodiments, the core main body 1 includes a cable conductor 101, an insulating layer 103 and a flame-retardant layer 102. The insulating layer 103 covers the cable conductor 101, and the flame-retardant layer 102 covers the insulating layer 103.

[0023] It can be understood that the insulating layer 103 can be a tinned copper wire shielding layer. The tinned copper wire shielding layer can be a tinned copper wire braided layer. A silicone rubber insulating layer is provided between the tinned copper wire braided layer and the cable conductor 101 to form the insulating layer. The tinned copper wire braided layer is made of high-density braiding of more than 80%, can resist the erosion of most acids and alkalis, has little water absorption, and can still maintain flexibility at low temperatures. The flame retardant layer 102 can be made of a flame retardant silicone material. The layers of the wire core main body 1 can be bonded together with a common glue in the cable industry.

[0024] Please continue to refer to Figure 1 In some embodiments, the cable conductor 101 includes a plurality of fine bare copper wires, and the plurality of fine bare copper wires are stranded in a special stranding manner for drag chain applications to form the cable conductor 101.

[0025] It can be understood that the cable conductor formed by the special stranding method for drag chain applications can be arranged in a multi-core plum blossom shape. The cable conductor formed in this way has good flexibility and is not easy to break.

[0026] Please refer to Figure 1 In some embodiments, the main body of the cable outer surface includes a reinforced inner sheath 3, a tape 4, and an outer sheath 5. A covering cavity is opened in the reinforced inner sheath 3. The tape 4 covers the reinforced inner sheath 3, and the outer sheath 5 covers the tape 4.

[0027] It can be understood that the reinforced inner sheath 3 can have a high tear resistance, extend the service life of the cable, and can resist the erosion of most acids and alkalis, has little water absorption, and can still maintain flexibility at low temperatures, has high electrical insulation, and also has a good high-temperature resistance effect. The tape 4 can cooperate with the reinforced inner sheath 3 to fix the wire core main body 1. The above-mentioned reinforced inner sheath 3, tape 4, and outer sheath 3 can be bonded to each other with a common glue in the cable industry.

[0028] Please refer to Figure 2 In some embodiments, the reinforced inner sheath 3 includes a polytetrafluoroethylene layer 301, an armor layer 302, and a shielding layer 303. A covering cavity is opened in the polytetrafluoroethylene layer 301. The armor layer 302 covers the polytetrafluoroethylene layer 301, and the shielding layer 303 covers the armor layer 302.

[0029] It can be understood that the polytetrafluoroethylene 301 layer makes the cable have excellent heat resistance and cold resistance, so that the cable can be used for a long time in the temperature range of -180 to 260 °C, and this material has acid and alkali corrosion resistance and good insulation performance. The armor layer 302 has the function of mechanical protection and can withstand the longitudinal breaking force. The shielding layer 303 has the function of magnetic field shielding to ensure the safe operation of the cable. The armor layer 302 and the shielding layer 303 can be made of common materials in the cable industry. The tape 4 can be covered on the shielding layer 303.

[0030] Please refer to Figure 3 , in some embodiments, the outer sheath 5 includes a PE material layer 501, a PVC material layer 502 and an acid and alkali resistant material layer 503. The PE material layer 501 covers the tape 4, the PVC material layer 502 covers the PE material layer 501, and the acid and alkali resistant material layer 503 covers the PVC material layer 502.

[0031] It can be known that the thickness of the PE material layer 501 and the thickness of the PVC material layer 502 can be the same. The PE material layer 501 has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, and light weight. It also has good insulation and anti-aging properties, increasing the anti-fatigue performance of the cable and extending the service life of the cable. The PE material layer 501 and the PVC material layer 502 can be adhered with the commonly used glue in the industry. The outer surface of the PVC material layer 502 and the acid and alkali resistant material layer 503 are also adhered in the above manner. The cooperation of the PVC material layer 502 and the acid and alkali resistant material layer 503 can resist the erosion of most acids and alkalis, have small water absorption, still maintain flexibility at low temperatures, have high electrical insulation, play a role in high temperature resistance for the cable, and at the same time increase the electrical insulation performance of the cable.

[0032] From the above description, it can be known that for the electrical engineering cable provided by the present utility model, by filling the filler 2 in the covering cavity of the outer surface main body of the cable, the outer surface main body of the cable can be made to present a round and complete state. When being extruded by an external force, the deformation of the outer surface main body of the cable is small. Therefore, the outer surface main body of the cable is not easily damaged.

[0033] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. An electrical engineering cable, characterized in that, It includes a cable outer surface main body, several core main bodies and filling materials. The cable outer surface main body includes a reinforced inner sheath, a tape and an outer sheath. The reinforced inner sheath includes a polytetrafluoroethylene layer, an armored layer and a shielding layer. A covering cavity is formed within the polytetrafluoroethylene layer. The armored layer covers the polytetrafluoroethylene layer. The shielding layer covers the armored layer. The tape covers the shielding layer. The outer sheath covers the tape. Several of the core main bodies are arranged within the covering cavity, and the filling materials are filled within the covering cavity so that the interior of the covering cavity is in a full state.

2. The electrical engineering cable according to claim 1, characterized in that, The core main body includes a cable conductor, an insulating layer and a flame retardant layer. The insulating layer covers the cable conductor. The flame retardant layer covers the insulating layer.

3. The electrical engineering cable according to claim 2, wherein, The cable conductor includes several fine bare copper wires. The several fine bare copper wires are stranded together by a stranding method for drag chain applications to form the cable conductor.

4. The electrical engineering cable according to claim 1, characterized in that, The outer sheath includes a PE material layer, a PVC material layer and an acid and alkali resistant material layer. The PE material layer covers the tape. The PVC material layer covers the PE material layer. The acid and alkali resistant material layer covers the PVC material layer.

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