A new type of high flame-retardant super-flexible PVC drag chain cable

Abstract

The utility model relates to super flexible PVC towed chain cable technical field, proposes a new type high flame -retardant super flexible PVC towed chain cable, include: conductor and set up in the insulating layer of conductor outside and set up in the outer sheath of insulating layer outside, set up in the mica tape between conductor and insulating layer, set up in the anti -interference layer of mica tape outside, set up in the aramid fiber layer of anti -interference layer outside, set up in the seamless fire -resistant aluminium cover of aramid fiber layer outside, set up in the protective layer of seamless fire -resistant aluminium cover outside, and set up in the oxygen barrier layer between protective layer and seamless fire -resistant aluminium cover, through the mica tape and aramid fiber layer in the anti -interference layer between conductor and insulating layer, make seamless fire -resistant aluminium cover still can maintain fire barrier after softening, prevent flame penetration, also make this cable still can keep good electrical performance and mechanical strength under high temperature environment, thereby make this cable have superhigh flame -retardant performance.

Description

Technical Field

[0001] This utility model relates to the field of ultra-flexible PVC drag chain cable technology, specifically to a novel high flame-retardant ultra-flexible PVC drag chain cable. Background Technology

[0002] Ultra-flexible PVC drag chain cable is a cable designed specifically for applications involving frequent bending and movement. It features extremely high flexibility, abrasion resistance, and anti-interference capabilities. It is widely used in drag chain systems of various mechanical equipment and can operate stably in harsh environments.

[0003] Chinese utility model patent CN217506923U discloses a novel high flame-retardant ultra-flexible PVC drag chain cable, comprising a silver-plated stranded conductor, a semiconductor inner shield, cross-linked polyethylene insulation, a semiconductor outer shield, a seamless fire-resistant aluminum sheath, a mineral oxygen barrier layer, low-smoke halogen-free water-resistant insulation, armor, and a PVC outer sheath. The silver-plated stranded conductor is surrounded by a semiconductor inner shield, which is then surrounded by cross-linked polyethylene insulation. The cross-linked polyethylene insulation is further surrounded by a semiconductor outer shield, which is surrounded by a seamless fire-resistant aluminum sheath. The seamless fire-resistant aluminum sheath is surrounded by a mineral oxygen barrier layer, which is surrounded by low-smoke halogen-free water-resistant insulation. The low-smoke halogen-free water-resistant insulation is surrounded by armor, and the armor is surrounded by a PVC outer sheath. This novel high flame-retardant ultra-flexible PVC drag chain cable has the advantages of ultra-flexibility, high flame retardancy, good insulation, good waterproofing, and strong anti-interference ability.

[0004] However, the above-mentioned solutions have the following problems when the relevant technologies are implemented: poor flame retardant performance; when encountering extreme high temperatures such as short circuit fires, the aluminum sheath may melt through; the mineral oxygen barrier layer alone is not enough to completely retard the flame; flames may enter from the damaged area; and in long-term high-temperature environments such as steel mills and heat treatment equipment, the aluminum sheath oxidizes and becomes brittle, reducing its service life. Therefore, a new type of high flame retardant ultra-flexible PVC drag chain cable is needed. Utility Model Content

[0005] This utility model proposes a novel high flame-retardant ultra-flexible PVC drag chain cable, which solves the problems of poor flame-retardant performance in related technologies. When encountering extreme high temperatures such as short circuits and fires, the aluminum sheath may melt through, the mineral oxygen barrier layer alone is not enough to completely retard the flame, and the flame may enter from the damaged area. Furthermore, in long-term high-temperature environments such as steel mills and heat treatment equipment, the aluminum sheath oxidizes and becomes brittle, reducing its service life.

[0006] The technical solution of this utility model is as follows: A novel high flame-retardant ultra-flexible PVC drag chain cable, comprising: The conductor and the insulating layer disposed on the outside of the conductor and the outer sheath disposed on the outside of the insulating layer; Mica tape disposed between the conductor and the insulating layer; An anti-interference layer is disposed on the outside of the mica strip; An aramid fiber layer disposed on the outside of the anti-interference layer; A seamless fireproof aluminum sleeve is disposed on the outside of the aramid fiber layer; A protective layer disposed on the outside of the seamless fireproof aluminum sleeve; And an oxygen barrier layer disposed between the protective layer and the seamless fireproof aluminum sleeve.

[0007] Preferably, a row of guide grooves is formed on the outer side wall of the outer sheath.

[0008] Preferably, a TPE buffer layer is provided on the inner side of the protective layer, and the oxygen barrier layer is located on the inner side of the TPE buffer layer.

[0009] Preferably, the anti-interference layer includes a semiconductor inner shielding layer disposed between the mica tape and the insulating layer, and a semiconductor outer shielding layer disposed between the insulating layer and the aramid fiber layer.

[0010] Preferably, the protective layer includes a low-smoke halogen-free water-proof insulation disposed outside the TPE buffer layer, the outer side of the low-smoke halogen-free water-proof insulation is armored, and the outer sheath is located outside the armor.

[0011] The working principle and beneficial effects of this utility model are as follows: 1. Through the mica tape between the conductor and the insulation layer and the aramid fiber layer in the anti-interference layer, the seamless fireproof aluminum sheath can still maintain the fire barrier after softening, preventing flame penetration. At the same time, the cable can still maintain good electrical performance and mechanical strength in high-temperature environments, thus giving the cable extremely high flame retardant performance.

[0012] 2. The drainage trenches allow for better heat dissipation during cable operation, effectively reducing cable temperature and preventing overheating. They also help rainwater or sewage flow out along the trenches, preventing water accumulation and corrosion of the cable, thus protecting its long-term stable operation. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure proposed in this utility model; Figure 3 A schematic diagram of the shielding layer proposed in this utility model is provided.

[0015] In the diagram: 1. Conductor; 2. Mica tape; 3. Insulating layer; 4. Aramid fiber layer; 5. Seamless fireproof aluminum sleeve; 6. Anti-interference layer; 61. Semiconductor inner shielding layer; 62. Semiconductor outer shielding layer; 7. Protective layer; 71. Low smoke halogen-free waterproof insulation; 72. Armoring; 8. Outer sheath; 9. TPE buffer layer; 10. Diversion groove; 11. Oxygen barrier layer. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1 Please see Figure 1 - Figure 3 A novel high flame-retardant, ultra-flexible PVC drag chain cable includes: Conductor 1, insulation layer 3 disposed on the outside of conductor 1, and outer sheath 8 disposed on the outside of insulation layer 3; Mica tape 2 is disposed between conductor 1 and insulating layer 3; An anti-interference layer 6 is set on the outside of the mica strip 2; The aramid fiber layer 4 is disposed on the outside of the anti-interference layer 6; A seamless fireproof aluminum sleeve 5 is set on the outside of the aramid fiber layer 4; A protective layer 7 is installed on the outside of the seamless fireproof aluminum sleeve 5; And an oxygen barrier layer 11 is provided between the protective layer 7 and the seamless fireproof aluminum sleeve 5.

[0018] This utility model provides a novel high flame-retardant ultra-flexible PVC drag chain cable. Through the aramid fiber layer 4, the cable can maintain good electrical performance and mechanical strength in high-temperature environments, while also significantly improving the tensile strength of the cable and enhancing its applicability in complex environments. Then, through the mica tape 2 between the conductor 1 and the insulation layer 3, the seamless fireproof aluminum sheath 5 can still maintain a fire barrier after softening, preventing flame penetration, thus giving the cable extremely high flame-retardant performance. Finally, through the anti-interference layer 6 and the protective layer 7, it is ensured that the cable transmission process is not affected by external signals, and the cable is protected from damage and destruction.

[0019] Furthermore, a TPE buffer layer 9 is provided on the inner side of the protective layer 7, and the oxygen barrier layer 11 is located on the inner side of the TPE buffer layer 9.

[0020] Specifically, the TPE buffer layer 9 can absorb the internal stress during dynamic bending.

[0021] Furthermore, the anti-interference layer 6 includes a semiconductor inner shielding layer 61 disposed between the mica strip 2 and the insulating layer 3, and a semiconductor outer shielding layer 62 disposed between the insulating layer 3 and the aramid fiber layer 4.

[0022] Specifically, the inner semiconductor shielding layer 61 and the outer semiconductor shielding layer 62 ensure that the cable transmission process is not affected by external signals.

[0023] Furthermore, the protective layer 7 includes a low-smoke halogen-free water-proof insulation 71 disposed outside the TPE buffer layer 9, an armor 72 disposed outside the low-smoke halogen-free water-proof insulation 71, and an outer sheath 8 located outside the armor 72.

[0024] Specifically, the low-smoke halogen-free water-proof insulation 71 can effectively prevent moisture from penetrating between the conductor and the insulation layer, thereby improving the cable's moisture resistance and extending its service life. It can also improve the overall high-temperature resistance of the cable to a certain extent, making it suitable for some high-temperature working environments. Then, the armor 72 can prevent rats and termites from biting and protect the cable from damage.

[0025] Example 2 Based on Embodiment 1, in this embodiment: a row of guide grooves 10 is formed on the outer side wall of the outer sheath 8.

[0026] The technical solution provided in this embodiment is as follows: the heat generated by the cable during operation is better dissipated through the guide trench 10, which effectively reduces the temperature of the cable and prevents overheating. At the same time, it can also help rainwater or sewage flow out along the trench, avoid water accumulation and corrosion of the cable, and protect the long-term stable operation of the cable.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel high flame-retardant, ultra-flexible PVC drag chain cable, characterized in that, include: Conductor (1) and insulation layer (3) disposed outside the conductor (1) and outer sheath (8) disposed outside the insulation layer (3); Mica tape (2) is disposed between the conductor (1) and the insulating layer (3); An anti-interference layer (6) is provided on the outside of the mica strip (2); Aramid fiber layer (4) disposed on the outside of the anti-interference layer (6); Seamless fireproof aluminum sleeve (5) is disposed on the outside of the aramid fiber layer (4); A protective layer (7) is provided on the outside of the seamless fireproof aluminum sleeve (5); And an oxygen barrier layer (11) disposed between the protective layer (7) and the seamless fireproof aluminum sleeve (5).

2. The novel high flame-retardant ultra-flexible PVC drag chain cable according to claim 1, characterized in that: A row of guide grooves (10) is provided on the outer side wall of the outer sheath (8).

3. The novel high flame-retardant ultra-flexible PVC drag chain cable according to claim 1, characterized in that: The protective layer (7) is provided with a TPE buffer layer (9) on its inner side, and the oxygen barrier layer (11) is located on the inner side of the TPE buffer layer (9).

4. The novel high flame-retardant ultra-flexible PVC drag chain cable according to claim 1, characterized in that: The anti-interference layer (6) includes a semiconductor inner shielding layer (61) disposed between the mica strip (2) and the insulating layer (3), and a semiconductor outer shielding layer (62) disposed between the insulating layer (3) and the aramid fiber layer (4).

5. A novel high flame-retardant ultra-flexible PVC drag chain cable according to claim 3, characterized in that: The protective layer (7) includes a low-smoke halogen-free water-proof insulation (71) disposed outside the TPE buffer layer (9), and an armor (72) is disposed outside the low-smoke halogen-free water-proof insulation (71), and the outer sheath (8) is located outside the armor (72).

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