High-temperature-resistant, wear-resistant and flame-retardant control cable

Abstract

The utility model discloses a high-temperature-resistant wear-resistant flame-retardant control cable, which comprises a cable core, the cable core is composed of a plurality of conductive units, an inner protective layer is arranged outside the cable core, gaps among the plurality of conductive units in the inner protective layer are filled with a filling layer, a first shielding layer is wrapped outside the inner protective layer, and a second shielding layer is wrapped outside the first shielding layer. The first shielding layer is coated with an outer flame-retardant layer, the outer flame-retardant layer is coated with a belting layer, the belting layer is coated with a second shielding layer, the second shielding layer is coated with an outer protective layer, and the outer protective layer is coated with an anti-abrasion layer. The control cable provided by the utility model can effectively avoid the problem that the sheath of the cable is abraded due to friction, and can improve the flame-retardant and temperature-resistant performances, thereby prolonging the service life of the cable so as to meet the use requirements under complex working environment conditions, and the control cable is high in practicability, simple in overall structure, reasonable in design and worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a high temperature resistant, wear resistant and flame retardant control cable. Background Art

[0002] As an important supporting industry of the national economy, the power cable industry has become more and more widely used with the rapid development of the national economy. As a wire used to transmit and distribute electric energy, power cables have been widely used in various fields. They are an indispensable transmission medium for industrial and civil use. With the development of science and technology and changes in the market, the demand for power cables is also growing rapidly.

[0003] The rated voltage of power cables is generally 0.6 / 1kV and above, while the rated voltage of control cables is mainly 450 / 750V. When producing power cables and control cables of the same specifications, the insulation and sheath thickness of power cables are thicker than those of control cables. For existing control cables, their flame retardancy, insulation and high temperature resistance are poor, and once burned, they will produce a large amount of toxic smoke, causing harm to people around and seriously polluting the environment. In addition, since the control cables need to be dragged during the laying process, the long-term friction with the ground will easily cause the outer skin of the cable to be severely worn, resulting in sheathing, which will affect the service life of the cable.

[0004] After searching, the patent document with the authorization announcement number CN219958599U discloses an insulated high temperature resistant flame retardant control cable, while the patent document with the authorization announcement number CN220569425U discloses a plastic insulated control cable with good wear resistance. From the contents disclosed in the two retrieved patent documents, a cable that meets the use requirements is provided from different angles. With the rapid growth of supporting cable products for existing industrial automation needs, the existing power cables cannot be used in complex working environments. In order to meet its use requirements, it is particularly important to provide a control cable different from the prior art to meet the use requirements under complex working environment conditions, thereby improving the practicality of the control cable. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a control cable with stable performance in view of the problems existing in the background technology. The control cable can effectively avoid the problem of cable sheath wear due to friction, and can also improve its flame retardant and temperature resistance, thereby increasing the service life of the cable, so as to meet the use requirements under complex working environment conditions. Specifically, it is a high temperature resistant, wear-resistant and flame retardant control cable.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a high-temperature resistant, wear-resistant and flame-retardant control cable, comprising a cable core, the cable core is composed of multiple conductive units, an inner sheath is arranged outside the cable core, the gaps between the multiple conductive units in the inner sheath are filled with a filling layer, a first shielding layer is coated on the outer side of the inner sheath, an outer flame-retardant layer is coated on the outer side of the first shielding layer, a tape layer is coated on the outer side of the outer flame-retardant layer, a second shielding layer is coated on the outer side of the tape layer, an outer sheath is coated on the outer side of the second shielding layer, and an anti-wear layer is coated on the outer sheath.

[0007] Furthermore, a high-temperature resistant, wear-resistant and flame-retardant control cable described in the utility model is adopted, wherein the cable core is composed of four conductive units, each conductive unit is composed of a conductor and an insulating layer, an inner flame-retardant layer, a high-temperature resistant layer and a protective layer sequentially coated on the outside of the conductor from the inside to the outside, and the outer sides of the four conductive units are arranged in a tangent state to form a square structure with a cross section; wherein the conductor adopts Category 5 bare copper conductor specified in GB / T 3956-2008, the insulating layer is extruded and coated on the conductor with PVC insulating material, the inner flame-retardant layer is extruded from a halogen-free flame-retardant polycarbonate material, the high-temperature resistant layer is extruded from a polytetrafluoroethylene material, and the protective layer is extruded from a halogen-free, low-smoke, flame-retardant polyolefin material.

[0008] Furthermore, the high temperature resistant, wear-resistant and flame retardant control cable described in the utility model is adopted, and the filling layer is filled with aramid yarn.

[0009] Furthermore, the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model is adopted, and the inner sheath is formed by winding an aluminum-plastic composite tape.

[0010] Furthermore, in the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model, the first shielding layer is a braided shielding layer, and the braided shielding layer is formed by cross-weaving of copper wire and nylon composite, and the copper wire weaving coverage rate reaches 80-90%.

[0011] Furthermore, the high temperature resistant, wear-resistant and flame retardant control cable described in the utility model is adopted, and the outer flame retardant layer is formed by wrapping a halogen-free glass fiber tape.

[0012] Furthermore, in the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model, the tape layer is formed by winding a nylon thin-wall tape.

[0013] Furthermore, in the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model, the second shielding layer is a braided shielding layer, and the braided shielding layer is formed by winding a tinned copper braided tape.

[0014] Furthermore, the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model is adopted, and the outer sheath is formed by extrusion of ETFE high temperature resistant insulating material.

[0015] Furthermore, the high temperature resistant, wear-resistant and flame-retardant control cable described in the utility model is adopted, and the wear-resistant layer is made of rubber material.

[0016] The high-temperature resistant, wear-resistant and flame-retardant control cable described in the utility model can improve the high-temperature resistance and flame-retardant performance of the conductive unit because each conductive unit is composed of a conductor and an insulating layer, an inner flame-retardant layer, a high-temperature resistant layer and a protective layer sequentially coated on the outside of the conductor from the inside to the outside; and a filling layer is filled in the gaps between the plurality of conductive units, and the filling layer is filled with aramid yarn to enhance the stability of the cable core; and a first shielding layer, an outer flame-retardant layer, a wrapping layer, a second shielding layer, an outer protective layer and an anti-wear layer are sequentially arranged outside the inner protective layer, which can not only further increase its high-temperature resistance and flame-retardant performance, but also provide good wear resistance.

[0017] It can be seen that the use of the control cable described in the utility model can effectively avoid the problem of cable sheath wear due to friction through the coordination of the cable core with the filling layer, the inner protective layer, the first shielding layer, the outer flame retardant layer, the tape layer, the second shielding layer, the outer protective layer and the anti-wear layer, and can also improve its flame retardant and temperature resistance, thereby increasing the service life of the cable, so as to meet the use requirements under complex working environment conditions. It has strong practicality, simple overall structure, reasonable design, and is worthy of popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] As shown in the figure: 1-conductive unit, 11-conductor, 12-insulating layer, 13-inner flame retardant layer, 14-high temperature resistant layer, 15-protective layer, 2-filling layer, 3-inner protective layer, 4-first shielding layer, 5-outer flame retardant layer, 6-taping layer, 7-second shielding layer, 8-outer protective layer, 9-anti-wear layer. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "provided with" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] It should be noted that the term "comprise" or any other variation is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0025] like Figure 1As shown, the utility model discloses a high temperature resistant, wear-resistant and flame-retardant control cable, comprising a cable core, the cable core is composed of four conductive units 1, each conductive unit 1 is composed of a conductor 11 and an insulating layer 12, an inner flame-retardant layer 13, a high temperature resistant layer 14 and a protective layer 15 which are sequentially coated on the outside of the conductor 11 from the inside to the outside, and the outer sides of the four conductive units 1 are arranged in a tangent state to form a square structure in cross section; an inner sheath 3 is arranged outside the cable core, and a filling layer 2 is filled in the gaps between the multiple conductive units 1 in the inner sheath 3, a first shielding layer 4 is coated outside the inner sheath 3, an outer flame-retardant layer 5 is coated outside the first shielding layer 4, a tape layer 6 is coated outside the outer flame-retardant layer 5, a second shielding layer 7 is coated outside the tape layer 6, an outer sheath 8 is coated outside the second shielding layer 7, and an anti-wear layer 9 is coated outside the outer sheath 8; wherein, the conductor 11 adopts GB / T 3956-2008 stipulates that the 5 types of bare copper conductors, the insulating layer 12 is extruded and coated on the conductor 11 with PVC insulating material, the inner flame retardant layer 13 is extruded with halogen-free flame retardant polycarbonate material, the high temperature resistant layer 14 is extruded with polytetrafluoroethylene material, and the protective layer 15 is extruded with halogen-free low-smoke flame retardant polyolefin material.

[0026] Furthermore, the control cable described in the utility model is adopted, the filling layer 2 is filled with aramid fibers, the inner protective layer 3 is wound with an aluminum-plastic composite tape, the first shielding layer 4 is a braided shielding layer, the braided shielding layer is braided by copper wire and nylon composite cross-weaving, and the copper wire braiding coverage rate reaches 80-90%, the outer flame retardant layer 5 is wrapped with a halogen-free glass fiber tape, the tape layer 6 is wound with a nylon thin-wall tape, the second shielding layer 7 is a braided shielding layer, the braided shielding layer is wound with a tinned copper braided tape, the outer protective layer 8 is extruded from ETFE high temperature resistant insulating material, and the wear-resistant layer 9 is made of rubber material.

[0027] The utility model discloses a high temperature resistant, wear-resistant and flame-retardant control cable. Since the conductor 11 is twisted by a plurality of Type 5 copper conductors specified in GB / T3956-2008, it can not only make its structure soft, but also meet the use requirements of the control cable. An insulating layer 12, an inner flame-retardant layer 13, a high temperature resistant layer 14 and a protective layer 15 are sequentially arranged outside the conductor 11. The insulating layer 12 is extruded and coated on the conductor 11 with PVC insulating material. The PVC insulating material has good toughness, strong ductility, good impact resistance, wear resistance, strong cut resistance, good chemical resistance, acid and alkali resistance, oil resistance and corrosion resistance. It also has good processability, is easy to process, has low production cost and high market appeal. The inner flame-retardant layer 13 is extruded with halogen-free flame-retardant polycarbonate material, the high temperature resistant layer 14 is extruded with polytetrafluoroethylene material, and the protective layer 15 is extruded with halogen-free low-smoke flame-retardant polyolefin material. By arranging the inner flame retardant layer 13 , the high temperature resistant layer 14 and the protective layer 15 outside the insulating layer 12 , the high temperature resistance and flame retardant performance of the conductive unit 1 can be improved.

[0028] In addition, since the filling layer 2 is filled in the gaps between the multiple conductive units 1 in the inner protective layer 3, and the first shielding layer 4, the outer flame retardant layer 5, the wrapping layer 6, the second shielding layer 7, the outer protective layer 8 and the wear-resistant layer 9 are sequentially arranged outside the inner protective layer 3, the inner protective layer 3, the outer flame retardant layer 5, the wrapping layer 6 and the outer protective layer 8 can further increase its high temperature resistance and flame retardant properties; the first shielding layer 4 and the second shielding layer 7 can not only fully shield the external electromagnetic interference, but also play a buffering role, thereby enhancing its performance; and the outermost wear-resistant layer 9 can enhance its wear resistance, thereby increasing its service life, so that it can meet the use requirements under complex working environment conditions.

[0029] In summary, the control cable described in the utility model can effectively avoid the problem of cable sheath wear due to friction through the cooperation of the cable core and the filling layer 2, the inner protective layer 3, the first shielding layer 4, the outer flame retardant layer 5, the wrapping layer 6, the second shielding layer 7, the outer protective layer 8 and the anti-wear layer 9, and can also improve its flame retardant and temperature resistance, thereby increasing the service life of the cable, so as to meet the use requirements under complex working environment conditions. It has strong practicality, simple overall structure, reasonable design, and is worthy of popularization and use.

[0030] Other details of the present invention are all conventional techniques known to those skilled in the art.

[0031] The protection scope of the utility model is not limited to the technical solutions disclosed in the specific implementation methods. The above description is only a preferred implementation method of the utility model and does not limit the utility model. Any minor modifications, equivalent substitutions and improvements made based on the technical solutions of the utility model should be included in the protection scope of the technical solutions of the utility model.

Claims

1. A high temperature resistant, wear-resistant and flame retardant control cable, comprising a cable core, characterized in that: The cable core is composed of a plurality of conductive units (1); an inner protective layer (3) is arranged outside the cable core; a filling layer (2) is filled in the gaps between the plurality of conductive units (1) in the inner protective layer (3); a first shielding layer (4) is coated outside the inner protective layer (3); an outer flame retardant layer (5) is coated outside the first shielding layer (4); a tape layer (6) is coated outside the outer flame retardant layer (5); a second shielding layer (7) is coated outside the tape layer (6); an outer protective layer (8) is coated outside the second shielding layer (7); and an anti-wear layer (9) is coated outside the outer protective layer (8).

2. A high temperature resistant, wear-resistant and flame retardant control cable according to claim 1, characterized in that: The cable core is composed of four conductive units (1), each conductive unit (1) is composed of a conductor (11) and an insulating layer (12), an inner flame retardant layer (13), a high temperature resistant layer (14) and a protective layer (15) which are sequentially coated on the conductor (11) from the inside to the outside, and the outer sides of the four conductive units (1) are arranged in a tangent state to form a square structure with a cross section; wherein the conductor (11) is a Class 5 bare copper conductor specified in GB / T 3956-2008, the insulating layer (12) is extruded and coated on the conductor (11) using PVC insulating material, the inner flame retardant layer (13) is extruded using a halogen-free flame retardant polycarbonate material, the high temperature resistant layer (14) is extruded using a polytetrafluoroethylene material, and the protective layer (15) is extruded using a halogen-free low-smoke flame retardant polyolefin material.

3. The high temperature resistant, wear-resistant and flame-retardant control cable according to claim 1, characterized in that: The filling layer (2) is filled with aramid yarns.

4. The high temperature resistant, wear-resistant and flame-retardant control cable according to claim 1, characterized in that: The inner protective layer (3) is formed by winding an aluminum-plastic composite tape.

5. The high temperature resistant, wear-resistant and flame-retardant control cable according to claim 1, characterized in that: The first shielding layer (4) is a braided shielding layer, which is formed by cross-weaving copper wire and nylon, and the copper wire weaving coverage rate reaches 80-90%.

6. The high temperature resistant, wear-resistant and flame retardant control cable according to claim 1, characterized in that: The outer flame retardant layer (5) is formed by wrapping a halogen-free glass fiber tape.

7. The high temperature resistant, wear-resistant and flame retardant control cable according to claim 1, characterized in that: The tape layer (6) is formed by winding a nylon thin-wall tape.

8. The high temperature resistant, wear-resistant and flame retardant control cable according to claim 1, characterized in that: The second shielding layer (7) is a braided shielding layer, and the braided shielding layer is formed by winding a tinned copper braided tape.

9. The high temperature resistant, wear-resistant and flame-retardant control cable according to claim 1, characterized in that: The outer protective layer (8) is formed by extrusion of ETFE high temperature resistant insulating material.

10. The high temperature resistant, wear-resistant and flame retardant control cable according to claim 1, characterized in that: The anti-wear layer (9) is made of rubber material.

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