Highly efficient flame-retardant electric wire and cable

Abstract

The utility model discloses a kind of high-efficiency flame-retardant electric wire cable, it includes cable core and insulating layer, the insulating layer is arranged at the cable core outer circumferential side, the insulating layer outer circumferential side is provided with filler layer, the filler layer outer circumferential side is provided with sheath layer, the filler layer and the sheath layer between being provided with flame-retardant mechanism, the sheath layer outside is provided with dismounting mechanism.This kind of high-efficiency flame-retardant electric wire cable, by setting the flame-retardant mechanism between filler layer and sheath layer, expand under high-temperature environment, fill gap quickly, so that flame etc. cannot enter cable interior;By setting the dismounting mechanism outside sheath layer, the cable used can be spliced according to the length required, and during recycling and maintenance, damaged cable can be recycled without affecting other cables, improving material reuse.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, specifically to a high-efficiency flame-retardant wire and cable. Background Technology

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information, and realize the conversion of electromagnetic energy. In a broad sense, wires and cables are also simply referred to as cables, while in a narrow sense, cables refer to insulated cables.

[0003] Existing patent document CN214753043U discloses a waterproof and flame-retardant wire and cable, comprising a positioning component, a cable body disposed inside the positioning component, an armor component disposed on the outer wall of the positioning component, a first protective sleeve disposed on the outer wall of the armor component, and a first filler material filled inside the first protective sleeve. This waterproof and flame-retardant wire and cable has a simple structure, strong protective performance, and resistance to bending and tension. Furthermore, by setting several first and second positioning frames, the internal structure of the wire and cable is made more stable. Finally, the gaps in the wire and cable are sealed in sections with sealant, ensuring that the wire and cable retains its highly efficient sealing and heat-prevention performance even after being cut during construction, preventing moisture from entering the wire and cable through the cut gaps, further extending the service life of the wire and cable, and achieving a simple, convenient, and highly efficient protective effect.

[0004] Although the device has many beneficial effects, the following problems still exist: at high temperatures, the material has a low expansion rate, and flames can spread along the gaps, affecting the flame-retardant effect of the material.

[0005] Secondly, traditional cable structures require the entire cable to be recycled during maintenance, resulting in low material reuse rates and high maintenance costs. Utility Model Content

[0006] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0007] 1. Technical problems to be solved:

[0008] To address the issue mentioned above where the material's low expansion rate at high temperatures allows flames to propagate along the gaps, thus affecting the material's flame-retardant effect;

[0009] Secondly, traditional cable structures require the entire cable to be recycled during maintenance, resulting in low material reuse rates and high maintenance costs. This invention addresses these issues.

[0010] Therefore, the purpose of this invention is to provide a high-efficiency flame-retardant wire and cable. This device can quickly fill gaps at high temperatures and can also reduce the cable length during maintenance.

[0011] 2. Technical Solution:

[0012] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0013] A high-efficiency flame-retardant wire and cable includes a base, a cable core, and an insulation layer. The insulation layer is disposed on the outer periphery of the cable core, a filler layer is disposed on the outer periphery of the insulation layer, and a sheath layer is disposed on the outer periphery of the filler layer. A flame-retardant mechanism is disposed between the filler layer and the sheath layer. The flame-retardant structure can increase the compressive strength of the cable and reduce the impact of external pressure on the cable during use. A disassembly mechanism is provided on the outer side of the sheath layer to leave a certain space for cable deformation and prevent cable deformation.

[0014] As a preferred embodiment of the present invention, the flame-retardant mechanism includes a limiting band, which is bonded between the filling layer and the sheath layer. An expanding material is bonded in the pores of the limiting band. In this embodiment, the expanding material is expanded graphite, which can expand when heated to fill the gaps. The limiting band material is resin-impregnated reinforced fiberglass tape, which has strong compressive strength.

[0015] As a preferred embodiment of this utility model of a high-efficiency flame-retardant wire and cable, the disassembly mechanism includes an external thread, which is formed at both ends of the outer periphery of the sheath layer. A sleeve is threadedly connected to the outer periphery of the external thread, and an internal thread is welded to the inner periphery of the sleeve. An external groove is formed on the outer periphery of the sheath layer, and a collar is bonded to the external groove. An internal groove is formed on the inner periphery of the sleeve, and the collar is bonded to the internal groove. A tubular crimp terminal is crimped to the outside of the cable core, and insulating tape is bonded to the outside of the tubular crimp terminal. An inner liner is fitted to the outside of the insulating tape, and the inner liner and the sheath layer are sealed and bonded with sealant.

[0016] As a preferred embodiment of the present invention, the collar is sealed and bonded in the outer groove and the inner groove. In this embodiment, the collar material is polyetheretherketone, which has high temperature resistance and oxidation resistance at room temperature. When the collar is damaged, it will not affect the performance of polyetheretherketone, thus reducing losses.

[0017] As a preferred embodiment of the present invention, a thermally conductive filler is provided between the cable core and the insulation layer. In this embodiment, the thermally conductive filler is a metal hydroxide that releases water of crystallization to cool down when heated.

[0018] As a preferred embodiment of the present invention, a fire-resistant material is provided between the insulation layer and the filling layer. The fire-resistant material is fiberglass binding tape, which can prevent the filling layer from falling off and exposing the cable core.

[0019] 3. Beneficial effects:

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This type of high-efficiency flame-retardant wire and cable, through the flame-retardant mechanism set between the filling layer and the sheath layer, expands in a high-temperature environment and quickly fills the gaps, preventing flames and other objects from entering the cable.

[0022] This type of high-efficiency flame-retardant wire and cable, through the disassembly mechanism set on the outside of the sheath layer, allows the cable to be spliced ​​to the required length during use, and can also be recycled during maintenance without affecting other cables, thus improving material reuse. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0024] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency flame-retardant wire and cable according to the present invention.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of a high-efficiency flame-retardant wire and cable according to the present invention.

[0026] Figure 3 This is a schematic diagram of the flame-retardant mechanism structure of a high-efficiency flame-retardant wire and cable according to the present invention.

[0027] Figure 4 This is a schematic diagram of the disassembly mechanism for a high-efficiency flame-retardant wire and cable according to the present invention.

[0028] Figure 5 This is a schematic diagram of the collar structure of a high-efficiency flame-retardant wire and cable according to the present invention.

[0029] Figure 6 This is a schematic diagram of the splicing structure of a high-efficiency flame-retardant wire and cable according to this utility model.

[0030] The following are the labels in the diagram: 1. Cable core; 2. Insulation layer; 3. Filler layer; 4. Sheath layer; 5. Thermally conductive filler; 6. Fire-resistant material; 7. Tubular crimp terminal; 8. Insulating tape; 9. Inner liner tube; 100. Flame-retardant mechanism; 101. Limiting band; 102. Expansion material; 200. Disassembly mechanism; 201. External thread; 202. Hoop; 203. Internal thread; 204. External groove; 205. Collar; 206. Internal groove. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0033] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] The term "connection method" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0036] This utility model provides an overall structural diagram of an embodiment of a high-efficiency flame-retardant wire and cable, including:

[0037] Please see Figures 1-5 This embodiment of a high-efficiency flame-retardant wire and cable includes a cable core 1 and an insulation layer 2. The insulation layer 2 is disposed on the outer periphery of the cable core 1. A filling layer 3 is disposed on the outer periphery of the insulation layer 2. A sheath layer 4 is disposed on the outer periphery of the filling layer 3. A flame-retardant mechanism 100 is disposed between the filling layer 3 and the sheath layer 4. A disassembly mechanism 200 is disposed on the outer side of the sheath layer 4.

[0038] It is worth noting that, in order to be flame retardant, specifically, the flame retardant mechanism 100 includes a limiting band 101, which is bonded between the filling layer 3 and the sheath layer 4. An expanding material 102 is bonded in the pores of the limiting band 101. In this embodiment, the expanding material 102 is expanded graphite, which can expand when heated and fill the gaps. The limiting band 101 is made of resin-impregnated reinforced fiberglass tape, which has strong compressive strength.

[0039] Next, for disassembly, specifically, the disassembly mechanism 200 includes an external thread 201, which is formed at both ends of the outer periphery of the sheath layer 4. A sleeve 202 is threadedly connected to the outer periphery of the external thread 201. An internal thread 203 is welded to the inner periphery of the sleeve 202. An external groove 204 is formed on the outer periphery of the sheath layer 4. A collar 205 is bonded to the external groove 204. An internal groove 206 is formed on the inner periphery of the sleeve 202. The collar 205 is bonded to the internal groove 206. A tubular crimp terminal 7 is crimped to the outside of the cable core 1. An insulating tape 8 is bonded to the outside of the tubular crimp terminal 7. An inner liner tube 9 is sleeved on the outside of the insulating tape 8. The inner liner tube 9 and the sheath layer 4 are sealed and bonded with sealant.

[0040] Meanwhile, to prevent oxygen from entering the cable, the collar 205 is specifically sealed and bonded in the outer groove 204 and the inner groove 206. In this embodiment, the collar 205 is made of polyetheretherketone, which has high temperature resistance and oxidation resistance at room temperature. When the collar 202 is damaged, it will not affect the performance of polyetheretherketone, thus reducing losses.

[0041] Furthermore, in order to reduce the temperature, a thermally conductive filler 5 is provided between the cable core 1 and the insulation layer 2. In this embodiment, the thermally conductive filler 5 is a metal hydroxide, which releases water of crystallization to reduce the temperature when heated.

[0042] Finally, to prevent detachment, specifically, a fire-resistant material 6 is provided between the insulation layer 2 and the filling layer 3. The fire-resistant material 6 is a glass fiber binding tape, which can prevent the filling layer 3 from falling off and causing the cable core 1 to be exposed.

[0043] The insulation layer 2 and the sheath layer 4 are made of a flame-retardant insulating material. After extrusion, they can retard the insulating core and can be combined and stranded into a cable. They can be filled with flame-retardant or fire-resistant fillers, fillers and wrapped with fiberglass tape.

[0044] In this embodiment, the flame-retardant insulating material is a highly flame-retardant insulating and sheathing material based on type III PVC resin and using environmentally friendly plasticizers, stabilizers, and flame-retardant auxiliary additives such as CP52, TOTM, Ca, Zn, and Sb.

[0045] Combination Figures 1-5 The specific usage process of this embodiment of a high-efficiency flame-retardant wire and cable is as follows:

[0046] 1. According to the actual use and the required length, strip the sheath layer 4, the filler layer 3 and the insulation layer 2 from the splicing ends of the cable to be spliced. Use a tubular crimp terminal 7 that matches the conductor specifications, insert the two cable cores 1 into both sides of the tubular crimp terminal 7, and crimp them with hydraulic pliers. Wrap the bonding insulating tape 8 around the outside of the connection part. Then, put an inner liner tube 9 of the same specification as the sheath layer 4 on the outside of the insulating tape 8. Seal and bond the joint between the inner liner tube 9 and the sheath layer 4 with sealant. Thread the external thread 201 of the cable sheath layer 4 to the internal thread 203 of the sleeve 202. Seal and bond the collar 205 between the external groove 204 on the sheath layer 4 and the internal groove 206 on the sleeve 202. Splice the cable into a cable of sufficient length for use.

[0047] 2: At room temperature, the limiting band 101 between the filling layer 3 and the sheath layer 4 has many pores, which improves the heat dissipation efficiency of the cable. In a combustion environment, the expansion material 102 in the pores will expand when heated and fill the pores, preventing the flame from reaching the filling layer 3 and reducing the further spread of the flame.

[0048] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-efficiency flame-retardant wire and cable, characterized in that, The cable includes a core (1) and an insulation layer (2). The insulation layer (2) is disposed on the outer periphery of the core (1). A filling layer (3) is disposed on the outer periphery of the insulation layer (2). A sheath layer (4) is disposed on the outer periphery of the filling layer (3). A flame-retardant mechanism (100) is disposed between the filling layer (3) and the sheath layer (4). A disassembly mechanism (200) is disposed on the outer side of the sheath layer (4). The flame-retardant mechanism (100) includes a limiting band (101). The limiting band (101) is disposed between the filling layer (3) and the sheath layer (4). An expansion material (102) is disposed in the pores of the limiting band (101).

2. The high-efficiency flame-retardant wire and cable according to claim 1, characterized in that, The disassembly mechanism (200) includes an external thread (201), which is provided at both ends of the outer periphery of the sheath layer (4). A sleeve (202) is provided on the outer periphery of the external thread (201), and an internal thread (203) is provided on the inner periphery of the sleeve (202). An external groove (204) is provided on the outer periphery of the sheath layer (4), and a collar (205) is provided on the external groove (204). An internal groove (206) is provided on the inner periphery of the sleeve (202), and the collar (205) is located in the internal groove (206).

3. The high-efficiency flame-retardant wire and cable according to claim 2, characterized in that, The collar (205) is sealed within the outer groove (204) and the inner groove (206).

4. The high-efficiency flame-retardant wire and cable according to claim 3, characterized in that, A thermally conductive filler (5) is provided between the cable core (1) and the insulation layer (2).

5. The high-efficiency flame-retardant wire and cable according to claim 4, characterized in that, A refractory material (6) is disposed between the insulating layer (2) and the filling layer (3).

6. The high-efficiency flame-retardant wire and cable according to claim 5, characterized in that, The disassembly mechanism (200) further includes a tubular crimp terminal (7), which is disposed on the outside of the cable core (1). An insulating tape (8) is disposed on the outside of the tubular crimp terminal (7), and an inner liner tube (9) is disposed on the outside of the insulating tape (8).

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