Anti-aging and high-temperature-resistant electric tracing band structure

Abstract

The utility model provides an anti-aging high-temperature-resistant electric tracing band structure, which comprises an insulating layer, two ends of an inner cavity of the insulating layer are symmetrically connected with guide cores, the surfaces of the guide cores are fixedly connected with a high-temperature-resistant layer, the outer side surface of the insulating layer is fixedly connected with a shielding layer, and the outer side surface of the shielding layer is fixedly connected with a flame-retardant layer. The outer side face of the flame-retardant layer is fixedly connected with the protective layer, the protective layer is composed of an inner sheath layer and an outer sheath layer, the inner sheath layer is fixedly connected to the outer side face of the flame-retardant layer, the outer side face of the inner sheath layer is fixedly connected with reinforcing wires through positioning grooves, and the outer sheath layer is fixedly connected to the outer side face of the inner sheath layer. The outer side surface of the outer sheath layer is fixedly connected with a reinforcing layer. According to the utility model, through the cooperation of the protective layer, the reinforcing wires and the shielding layer, the overall mechanical strength of the electric tracing band can be enhanced, and the anti-aging and high-temperature-resistant effects can be enhanced.

Description

An anti-aging and high-temperature resistant electric heating cable structure Technical Field

[0001] This utility model relates to the field of electric heat tracing technology, specifically to an anti-aging and high-temperature resistant electric heat tracing cable structure. Background Technology

[0002] Electric heating tape is a new type of high-tech product. Since its introduction into the application field in the 1970s, it has been widely used for antifreeze and heat preservation of liquids transported in pipelines and stored in tanks, maintaining process temperature, and heating roads, ramps, pedestrian crossings, eaves and floors. When the electric heating tape is connected to a power source, its resistance increases, generating heat, which is then transferred to achieve the heating effect. However, existing common electric heating tapes have poor tensile strength. During the pulling process, the surface of the electric heating tape is easily damaged, exposing the conductor core, which can easily cause fires or electric shocks. At the same time, the surface of existing common electric heating tapes has poor anti-aging and high-temperature resistance, making them easily damaged in high-temperature environments, causing the electric heating tape to malfunction and affecting its service life. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, an anti-aging and high-temperature resistant electric heating cable structure is provided to solve the problems mentioned in the background technology.

[0004] To achieve the above objectives, an anti-aging and high-temperature resistant electric heating cable structure is provided, comprising: an insulating layer, conductive cores symmetrically connected to both ends of the inner cavity of the insulating layer, a high-temperature resistant layer fixedly connected to the surface of the conductive cores, a shielding layer fixedly connected to the outer side of the insulating layer, a flame-retardant layer fixedly connected to the outer side of the shielding layer, and a protective layer fixedly connected to the outer side of the flame-retardant layer. The protective layer consists of an inner sheath layer and an outer sheath layer. The inner sheath layer is fixedly connected to the outer side of the flame-retardant layer, and a reinforcing wire is fixedly connected to the outer side of the inner sheath layer via a positioning groove. The outer sheath layer is fixedly connected to the outer side of the inner sheath layer, and a reinforcing layer is fixedly connected to the outer side of the outer sheath layer.

[0005] Preferably, the surface of the conductor core is wrapped with a high-temperature resistant layer by extrusion, and the high-temperature resistant layer is made of polyolefin material, and the polyolefin is uniformly mixed with thermally conductive particles.

[0006] Preferably, the insulating layer has an overall elongated strip structure, the cross-section of the insulating layer has a rectangular structure, and two sets of conductive cores are distributed side by side on both sides of the insulating layer. At the same time, the insulating layer is made of rubber material, and flame-retardant particles are uniformly added to the rubber material.

[0007] Preferably, the shielding layer adopts a metal wire braided mesh structure, and the outer surfaces of both the shielding layer and the insulation layer are sprayed with high-temperature resistant insulating paint. At the same time, the insulation layer is wrapped around the outer surface of the conductor core by extrusion.

[0008] Preferably, the flame retardant layer is wrapped around the outer side of the shielding layer by extrusion, and the flame retardant layer is made of halogen-free flame retardant polyolefin material, and the cross-section of the flame retardant layer has a U-shaped structure.

[0009] Preferably, the inner sheath layer is extruded and wrapped around the outer side of the flame retardant layer. The inner sheath layer is made of TPU material, and multiple sets of positioning grooves are opened at equal intervals around the outer side of the inner sheath layer in the circumferential direction. The positioning grooves are semi-cylindrical in shape, and the reinforcing wires fixedly connected in the positioning grooves are made of stainless steel.

[0010] Preferably, the outer sheath layer is extruded and wrapped around the outer surfaces of the inner sheath layer and the reinforcing wire, and the outer sheath layer is made of PE material, and the reinforcing layer on the outer surface of the outer sheath layer is sprayed with PTFE material coating.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by combining the shielding layer, the protective layer, and the reinforcing wire, the overall mechanical strength of the electric heating cable can be effectively enhanced, thereby increasing its tensile strength and reducing the probability of accidental damage to the surface of the electric heating cable. This ensures that the high-temperature resistant layer, the insulation layer, and the flame-retardant layer can be smoothly wrapped around the outside of the conductor core in sequence, thereby reducing the probability of fire or electric shock accidents. At the same time, by combining the inner sheath layer, the outer sheath layer, and the reinforcing layer, the anti-aging and high-temperature resistance of the surface of the electric heating cable can be effectively enhanced, reducing the probability of accidental damage to the surface of the electric heating cable and extending the service life of the electric heating cable. Attached Figure Description

[0012] Figure 1 is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 is a schematic diagram of the protective layer structure of an embodiment of this utility model.

[0014] Figure 3 is a front view structural diagram of an embodiment of this utility model.

[0015] Figure 4 is a schematic diagram of the inner sheath layer structure of an embodiment of this utility model.

[0016] In the diagram: 1. Conductor core; 2. High-temperature resistant layer; 3. Insulation layer; 4. Shielding layer; 5. Flame retardant layer; 6. Reinforcing wire; 7. Protective layer; 8. Inner sheath layer; 9. Outer sheath layer; 10. Reinforcing layer; 11. Positioning groove. Detailed Implementation

[0017] Referring to Figures 1 to 4, this utility model provides an anti-aging and high-temperature resistant electric heating cable structure, including: an insulating layer 3, with conductive cores 1 symmetrically connected to both ends of the inner cavity of the insulating layer 3, a high-temperature resistant layer 2 fixedly connected to the surface of the conductive cores 1, a shielding layer 4 fixedly connected to the outer side of the insulating layer 3, a flame-retardant layer 5 fixedly connected to the outer side of the shielding layer 4, and a protective layer 7 fixedly connected to the outer side of the flame-retardant layer 5. The protective layer 7 is composed of an inner sheath layer 8 and an outer sheath layer 9. The inner sheath layer 8 is fixedly connected to the outer side of the flame-retardant layer 5, and a reinforcing wire 6 is fixedly connected to the outer side of the inner sheath layer 8 via a positioning groove 11. The outer sheath layer 9 is fixedly connected to the outer side of the inner sheath layer 8, and a reinforcing layer 10 is fixedly connected to the outer side of the outer sheath layer 9.

[0018] In this embodiment, the high-temperature resistant layer 2 extruded onto the outer surface of the conductor core 1 can effectively reduce the probability of accidental spontaneous combustion due to excessive temperature at the conductor core 1. Furthermore, the uniformly added heat-conducting particles within the high-temperature resistant layer 2 can also reduce the probability of sustained high temperatures in localized areas of the high-temperature resistant layer 2. Simultaneously, the insulation layer 3 enhances the safety of the conductor core 1 during use, while the uniformly added flame-retardant particles within the insulation layer 3 enhance its flame-retardant effect, further reducing the probability of spontaneous combustion within the electric heating tape. The shielding layer 4 further enhances the... The electromagnetic shielding effect of the electric heating cable also enhances its overall mechanical strength. The flame-retardant layer 5 further enhances the flame-retardant effect of the electric heating cable. Meanwhile, the inner sheath layer 8 and the outer sheath layer 9 effectively enhance the high-temperature resistance of the surface of the electric heating cable. The combination of the outer sheath layer 9 and the reinforcing layer 10 effectively enhances the anti-aging effect of the surface of the electric heating cable. The reinforcing wires 6 evenly arranged inside the protective layer 7 further enhance the overall mechanical strength and tensile strength of the electric heating cable, reducing the chance of accidental tearing.

[0019] In a preferred embodiment, the surface of the conductor core 1 is wrapped with a high-temperature resistant layer 2 by extrusion, and the high-temperature resistant layer 2 is made of polyolefin material, and the polyolefin is uniformly mixed with heat-conducting particles.

[0020] In this embodiment, as shown in Figures 1 and 3, the uniformly mixed heat-conducting particles in the high-temperature resistant layer 2 allow the heat generated in a local area of ​​the conductor core 1 due to an accident to be quickly dissipated to the surrounding area, thereby helping to reduce the probability of spontaneous combustion in a local area of ​​the conductor core 1 due to heat accumulation.

[0021] As a preferred embodiment, the insulation layer 3 has an overall elongated strip structure, the cross-section of the insulation layer 3 is rectangular, and the two sets of conductive cores 1 are arranged side by side on both sides of the insulation layer 3. At the same time, the insulation layer 3 is made of rubber material, and flame-retardant particles are uniformly added to the rubber material.

[0022] In this embodiment, as shown in Figures 1 and 3, the flame-retardant particles uniformly added to the insulation layer 3 enable the insulation layer 3 to provide corresponding flame-retardant insulation protection for the conductor core 1, thereby helping to reduce the probability of spontaneous combustion or electric shock accidents of the electric heating cable.

[0023] As a preferred embodiment, the shielding layer 4 adopts a metal wire braided mesh structure, and both the outer surfaces of the shielding layer 4 and the insulating layer 3 are coated with high-temperature resistant insulating paint. Meanwhile, the insulating layer 3 is wrapped around the outer surface of the conductor core 1 by extrusion.

[0024] In this embodiment, as shown in Figures 1 and 3, the metal wire of the shielding layer 4 can be made of stainless steel, which can enhance the electromagnetic shielding effect of the electric heating cable and also help enhance the mechanical strength of the electric heating cable. At the same time, the spraying of high-temperature resistant insulating paint can help reduce the probability of the shielding layer 4 accidentally becoming conductive.

[0025] As a preferred embodiment, the flame retardant layer 5 is wrapped around the outer side of the shielding layer 4 by extrusion, and the flame retardant layer 5 is made of halogen-free flame retardant polyolefin material, and the cross-section of the flame retardant layer 5 has a U-shaped structure.

[0026] In this embodiment, as shown in Figures 1 and 3, the halogen-free flame-retardant polyolefin material is composed of polyolefin blend resin with flame-retardant fillers (such as aluminum hydroxide and magnesium hydroxide), antioxidants, smoke inhibitors, etc. It has excellent properties such as low smoke, low toxicity, flame retardancy, and low corrosivity, which can help enhance the overall flame-retardant effect of the electric heating tape.

[0027] In a preferred embodiment, the inner sheath layer 8 is extruded and wrapped around the outer side of the flame retardant layer 5. The inner sheath layer 8 is made of TPU material, and multiple sets of positioning grooves 11 are equally spaced around the outer side of the inner sheath layer 8 in the circumferential direction. The positioning grooves 11 have a semi-cylindrical structure, and the reinforcing wires 6 that are fixedly connected in the positioning grooves 11 are made of stainless steel.

[0028] In this embodiment, as shown in Figures 2, 3, and 4, the inner sheath layer 8 is made of TPU material, which can help enhance the high temperature resistance and wear resistance of the electric heating cable. Furthermore, by setting corresponding protrusion structures on the inner side of the extrusion port, the outer side of the inner sheath layer 8 can automatically open corresponding positioning grooves 11 during the extrusion process, thereby enhancing the convenience and stability of the installation of the reinforcing wire 6. At the same time, the setting of the reinforcing wire 6 can not only enhance the overall mechanical strength, but also enhance the temperature uniformity of the protective layer 7, avoiding excessive heat accumulation in local areas of the protective layer 7, and helping to enhance the safety of the electric heating cable during use.

[0029] In a preferred embodiment, the outer sheath layer 9 is extruded and wrapped around the outer surfaces of the inner sheath layer 8 and the reinforcing wire 6. The outer sheath layer 9 is made of PE material, and the reinforcing layer 10 on the outer surface of the outer sheath layer 9 is coated with PTFE material.

[0030] In this embodiment, as shown in Figures 2, 3 and 4, the outer sheath layer 9 is made of PE material, which can enhance the high temperature resistance, wear resistance and anti-aging effect of the outer surface of the electric heating cable. The spraying of the reinforcing layer 10 can further enhance the wear resistance and anti-aging effect of the outer surface of the electric heating cable.

Claims

1. An anti-aging, high temperature resistant, electrical heat tracing tape structure comprising: The insulating layer (3) is characterized in that: the two ends of the inner cavity of the insulating layer (3) are symmetrically connected to the conductor core (1), the surface of the conductor core (1) is fixedly connected to the high temperature resistant layer (2), and the outer side of the insulating layer (3) is fixedly connected to the shielding layer (4), the outer side of the shielding layer (4) is fixedly connected to the flame retardant layer (5), and the outer side of the flame retardant layer (5) is fixedly connected to the protective layer (7). Meanwhile, the protective layer (7) is composed of an inner sheath layer (8) and an outer sheath layer (9). The inner sheath layer (8) is fixedly connected to the outer side of the flame retardant layer (5), and the outer side of the inner sheath layer (8) is fixedly connected to the reinforcing wire (6) through the positioning groove (11). The outer sheath layer (9) is fixedly connected to the outer side of the inner sheath layer (8), and the outer side of the outer sheath layer (9) is fixedly connected to the reinforcing layer (10).

2. The anti-aging high temperature resistant electrical heat tracing band structure of claim 1, wherein, The surface of the conductor core (1) is wrapped with a high-temperature resistant layer (2) by extrusion, and the high-temperature resistant layer (2) is made of polyolefin material, and thermally conductive particles are uniformly mixed in the polyolefin.

3. The anti-aging and high-temperature resistant electric heating tape structure according to claim 1, characterized in that, The insulation layer (3) has an overall elongated structure and a rectangular cross-section. Two sets of conductor cores (1) are arranged side by side on both sides of the insulation layer (3). The insulation layer (3) is made of rubber, and flame-retardant particles are uniformly added to the rubber.

4. The anti-aging and high-temperature resistant electric heating tape structure according to claim 1, characterized in that, The shielding layer (4) adopts a metal wire braided mesh structure, and the outer surfaces of the shielding layer (4) and the insulation layer (3) are sprayed with high temperature resistant insulating paint. Meanwhile, the insulation layer (3) is wrapped around the outer surface of the conductor core (1) by extrusion.

5. The anti-aging, high temperature resistant, electrical heat tracing band structure of claim 1, wherein, The flame retardant layer (5) is wrapped around the outer side of the shielding layer (4) by extrusion, and the flame retardant layer (5) is made of halogen-free flame retardant polyolefin material, and the cross section of the flame retardant layer (5) is a U-shaped structure.

6. The anti-aging, high temperature resistant, electrical heat tracing band structure of claim 1, wherein, The inner sheath layer (8) is wrapped around the outer side of the flame retardant layer (5) by extrusion. The inner sheath layer (8) is made of TPU material, and multiple sets of positioning grooves (11) are opened at equal intervals around the outer side of the inner sheath layer (8) in the circumferential direction. The positioning grooves (11) have a semi-cylindrical structure, and the reinforcing wires (6) fixedly connected in the positioning grooves (11) are made of stainless steel.

7. The anti-aging and high-temperature resistant electric heating tape structure according to claim 1, characterized in that, The outer sheath layer (9) is wrapped around the outer side of the inner sheath layer (8) and the reinforcing wire (6) by extrusion. The outer sheath layer (9) is made of PE material, and the reinforcing layer (10) on the outer side of the outer sheath layer (9) is made of PTFE material by spraying.

Images