Control cable with double-layer shielding structure
By adopting a double-layer shielding structure in the control cable, including wear-resistant blocks, reinforcement ribs, fire-resistant layer and flame-retardant glass fiber, the problems of vulnerability and lack of isolation temperature of traditional cable refractory coatings are solved, and higher wear-resistant, tensile and fire-resistant performance are achieved, and the safety of the cable is enhanced.
Patent Information
- Application Number
- CN202421635341.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-11
AI Technical Summary
Traditional refractory double-layer composite shielded control cables are susceptible to external scratches during use, resulting in the loss of refractory coatings, which reduces fire resistance and lacks a structure for insulation temperature, resulting in high temperatures being transmitted to the interior through the cable surface, affecting the insulation performance.
The cable design is controlled by a double-layer shielding structure, including central reinforcement ribs, fire-proof partitions, protective layer and other structures. By setting wear-resistant blocks and reinforcement ribs on the periphery of the protective layer, tensile strength is increased and flame-retardant glass fibers are prevented from being damaged. The fire-proof layer and flame-retardant glass fibers are provided for double blocking. The insulation sheath is separated from the fire-proof partitions to isolate the high temperature.
It improves the wear resistance, tensile strength and fire resistance of the cable, prevents high temperatures from penetrated into the cable, protects the insulation layer, and enhances the safety and applicability of the cable.
Smart Images
Figure CN222826116U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a control cable with a double-layer shielding structure. Background Art
[0002] Control cables are PVC insulated and PVC sheathed control cables suitable for industrial and mining enterprises, energy and transportation departments, and for control and protection of lines with an AC rated voltage of 450 / 750 volts or less. In order to ensure the control cable, double-layer composite shielded control cables usually use good electrical conductors as shielding materials, which have good protection against low and high frequency strong electromagnetic field interference areas. In order to ensure that the control cable will not be affected by external fire during use, fire-resistant double-layer composite shielded control cables have emerged to ensure the normal use of the control cable while enhancing the fire resistance. However, traditional fire-resistant When the double-layer composite shielded control cable is produced, its fire-resistant structure is generally sprayed with fire-resistant coating on the surface. When in use, it is easily scratched by the outside, resulting in the loss of surface coating, thereby reducing its fire resistance. When a fire occurs, it cannot play a good fire-proofing effect. In addition, the traditional fire-resistant double-layer composite shielded control cable lacks a temperature-isolating structure. Although it can achieve the purpose of fire resistance, when a fire occurs, the high temperature will pass through the fireproof layer on the surface of the cable to the inside of the cable, thereby affecting the insulation skin of the internal cable, such as softening, which can easily lead to poor insulation performance of the cable. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a control cable with a double-layer shielding structure, which solves the problems raised by the current background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A double-layer shielded control cable structure comprises a central reinforcing rib, a fireproof partition and a protective layer, a plurality of fireproof partitions are arranged in an annular manner between the central reinforcing rib and the thermal insulation sheath, a wire core is arranged directly adjacent to the fireproof partition, an inner shielding layer is arranged on the periphery of the thermal insulation sheath, a flame-retardant glass fiber is arranged on the periphery of the inner shielding layer, an outer shielding layer is arranged on the periphery of the flame-retardant glass fiber, a fireproof layer is arranged on the periphery of the outer shielding layer, a protective layer is arranged on the periphery of the fireproof layer, a plurality of first elastic blocks and second elastic blocks are arranged between the fireproof layer and the protective layer, a plurality of wear-resistant blocks are arranged on the periphery of the protective layer, and reinforcing ribs are arranged inside the wear-resistant blocks.
[0006] Preferably, the wire core comprises a conductor, and an insulating layer is arranged around the periphery of the conductor.
[0007] Preferably, the inner shielding layer is made of a woven tensile steel wire, and the outer shielding layer is made of a metal chemical fiber woven mesh structure.
[0008] Preferably, the fireproof layer is made of ceramic silicone rubber layer material.
[0009] Preferably, the protective layer is made of polycarbonate material.
[0010] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0011] The double-layer shielded control cable provided by the utility model has wear-resistant blocks arranged on the periphery of the protective layer, and reinforcing ribs arranged between the wear-resistant blocks, so that when the cable is dragged on the cable ground, the wear-resistant blocks and the reinforcing ribs are in contact with the bottom surface, which greatly improves the wear resistance of the cable. At the same time, a first elastic block and a second elastic block are arranged between the protective layer and the fireproof layer. Through the coordinated use of the first elastic block and the second elastic block, the tensile strength of the cable is greatly enhanced, and the damage of the internal flame-retardant glass fiber caused by external scratches is further prevented, thereby ensuring the fireproof effect of the flame-retardant glass fiber.
[0012] The utility model is provided with a fireproof layer and flame-retardant glass fiber. When the cable encounters a fire, the fireproof layer performs the first barrier, and the flame-retardant glass fiber performs the second barrier, thereby greatly improving the fireproof effect of the cable. At the same time, a heat-insulating sheath is provided on the periphery of the wire core, and a plurality of wire cores are separated by a fireproof partition. When the cable encounters a fire, the external high temperature can be isolated, and the external high temperature is prevented from penetrating into the interior of the cable, and the insulation layer on the periphery of the wire core is prevented from being affected by the high temperature, thereby protecting the insulation layer of the cable, thereby improving the safety of the cable in use.
[0013] The utility model further improves the tensile and compressive strength of the cable by arranging a central reinforcing core in the center of the cable, ensuring that the cable has strong resistance when subjected to tension or shear force;
[0014] The utility model can prevent interference from external signals by providing an inner shielding layer and an outer shielding layer, thereby performing signal shielding, making the cable more applicable and convenient to install and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an axonometric view of the utility model.
[0016] Figure 2 It is the front view of the utility model.
[0017] Figure 3 It is a schematic diagram of the internal structure of the wire core of the utility model.
[0018] In the figure: 1. core; 1.1. conductor; 1.2. insulation layer; 2. fireproof partition; 3. insulation sheath; 4. central reinforcing core; 5. inner shielding layer; 6. flame-retardant glass fiber; 7. outer shielding layer; 8. fireproof layer; 9. first elastic block; 10. second elastic block; 11. protective layer; 12. wear-resistant block; 13. reinforcing ribs. DETAILED DESCRIPTION
[0019] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0020] According to an embodiment of the utility model, a control cable with a double-layer shielding structure is provided.
[0021] Embodiment 1:
[0022] As shown in the attached figure of the instruction manual Figure 1 As shown, a double-layer shielded structure control cable includes a thermal insulation sheath 3, a central reinforcement rib 4, and a protective layer 11. A plurality of fireproof partitions 2 are arranged in an annular manner between the thermal insulation sheath 3 and the central reinforcement rib 4. A wire core 1 is directly arranged adjacent to the fireproof partition 2. An inner shielding layer 5 is arranged on the periphery of the thermal insulation sheath 3. A flame-retardant glass fiber 6 is arranged on the periphery of the inner shielding layer 5. An outer shielding layer 7 is arranged on the periphery of the flame-retardant glass fiber 6. A fireproof layer 8 is arranged on the periphery of the outer shielding layer 7. A protective layer 11 is arranged on the periphery of the fireproof layer 8. A plurality of first elastic blocks 9 and second elastic blocks 10 are arranged between the fireproof layer 8 and the protective layer 11. The first elastic blocks 9 and the second elastic blocks 10 are in contact with each other. A plurality of wear-resistant blocks 12 are arranged on the periphery of the protective layer 11. Reinforcement ribs 13 are arranged inside the wear-resistant blocks 12.
[0023] By arranging a central reinforcing core 4 at the center of the cable, the tensile and compressive strengths of the cable are further improved, ensuring that the cable has a stronger resistance when subjected to tensile or shearing forces.
[0024] The inner shielding layer 5 is made of tensile steel wire, and the outer shielding layer 7 is made of a metal chemical fiber woven mesh structure, which can effectively improve the shielding effect of the cable, so that the internal conductor 1.1 is not easily affected by external electromagnetic influences.
[0025] Embodiment 2:
[0026] As shown in the attached figure of the instruction manual Figure 1 , Figure 2 and Figure 3 As shown, a double-layer shielded structure control cable is provided with wear-resistant blocks 12 on the periphery of the protective layer 11, and reinforcing ribs 13 are provided between the wear-resistant blocks 12, so that when the cable is dragged on the cable ground, the wear-resistant blocks 12 and the reinforcing ribs 13 are in contact with the bottom surface, which greatly improves the wear resistance of the cable. At the same time, a first elastic block 9 and a second elastic block 10 are provided between the protective layer 11 and the fireproof layer 8. Through the coordinated use of the first elastic block 9 and the second elastic block 10, the tensile strength of the cable is greatly enhanced, and the damage of the internal flame-retardant glass fiber 6 caused by external scratches is further prevented, thereby ensuring the fireproof effect of the flame-retardant glass fiber 6. By providing a fireproof layer 8 and a flame-retardant glass fiber 6, when the cable encounters a fire, the fireproof layer 8 provides the first barrier, and the flame-retardant glass fiber 6 provides the second barrier, thereby greatly improving the fireproof effect of the cable. At the same time, by providing a heat-insulating sheath 3 on the periphery of the core 1 and separating several cores 1 with a fireproof partition 2, when the cable encounters a fire, the external high temperature can be isolated, preventing the external high temperature from penetrating into the interior of the cable, and avoiding the insulating layer 1.2 on the periphery of the core 1 from being affected by the high temperature, thereby protecting the insulating layer 1.2 of the cable, thereby improving the safety of the cable use.
[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0028] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A double-layer shielded control cable, characterized in that: The invention comprises a heat-insulating jacket (3), a central reinforcing rib (4), and a protective layer (11); a plurality of fireproof partitions (2) are arranged in an annular manner between the heat-insulating jacket (3) and the central reinforcing rib (4); a wire core (1) is directly arranged adjacent to the fireproof partition (2); an inner shielding layer (5) is arranged on the periphery of the heat-insulating jacket (3); a flame-retardant glass fiber (6) is arranged on the periphery of the inner shielding layer (5); an outer shielding layer (7) is arranged on the periphery of the flame-retardant glass fiber (6); A fireproof layer (8) is arranged on the periphery of the outer shielding layer (7), a protective layer (11) is arranged on the periphery of the fireproof layer (8), a plurality of first elastic blocks (9) and a second elastic block (10) are arranged between the fireproof layer (8) and the protective layer (11), the first elastic block (9) is in contact with the second elastic block (10), a plurality of wear-resistant blocks (12) are arranged on the periphery of the protective layer (11), and reinforcing ribs (13) are arranged inside the wear-resistant blocks (12).
2. A double-layer shielded control cable according to claim 1, characterized in that: The wire core (1) comprises a conductor (1.1), and an insulating layer (1.2) is arranged on the periphery of the conductor (1.1).
3. A double-layer shielded control cable according to claim 1, characterized in that: The inner shielding layer (5) is made of a braided tensile steel wire, and the outer shielding layer (7) is made of a metal chemical fiber braided mesh structure.
4. A double-layer shielded control cable according to claim 1, characterized in that: The fireproof layer (8) is made of ceramic silicone rubber layer material.
5. A double-layer shielded control cable according to claim 1, characterized in that: The protective layer (11) is made of polycarbonate material.