Intelligent self-limiting temperature heating cable with good flame-retardant effect

Abstract

The utility model discloses a kind of intelligent self-limiting temperature heating cables with good flame-retardant effect, comprising: intelligent self-limiting temperature heating cable, the intelligent self-limiting temperature heating cable includes cable conductor, the surface of the cable conductor is provided with cable subwire, the surface of the cable conductor is fixedly connected with insulating rubber, tenacity reinforcing mechanism, the tenacity reinforcing mechanism is arranged on the surface of intelligent self-limiting temperature heating cable, flame-retardant cover, flame-retardant cover includes flame-retardant layer one, the surface of flame-retardant layer one is fixedly connected with flame-retardant strip one.The utility model is provided with flame-retardant cover, so that cable has flame-retardant capacity, the flame-retardant layer one of flame-retardant cover, flame-retardant strip one, flame-retardant layer two and flame-retardant strip two, cooperate with silicone flame-retardant glue and polyurethane flame-retardant glue, form multilayer flame-retardant barrier, when cable temperature rises due to fault, multilayer flame-retardant structure can effectively delay, prevent flame spread, greatly reduce fire occurrence probability, significantly improve cable flame-retardant performance, ensure safe use.

Description

Technical Field

[0001] This utility model relates to the field of intelligent self-regulating heating cable technology, specifically to an intelligent self-regulating heating cable with good flame retardant effect. Background Technology

[0002] In modern industrial production and civilian applications, intelligent self-regulating heating cables are widely used in various scenarios due to their unique automatic adjustment of heating power. For example, in cold regions, they are used for antifreeze and insulation of oil and gas pipelines to ensure the normal transport of media within the pipelines; in building heating systems, they can provide uniform and comfortable heat to the interior, making them more energy-efficient and effective than traditional heating methods; and they have also demonstrated good application results in snow and ice melting on roads, bridges, and other infrastructure.

[0003] However, existing intelligent self-regulating heating cables face severe safety challenges in practical use, with insufficient flame retardant performance being the most prominent issue. During long-term operation, the cables may experience faults such as current overload and partial short circuits, causing the cable temperature to rise sharply. Once the temperature reaches the ignition point, the cable's insulation and protective layers will burn, and the fire will spread extremely quickly and be difficult to control, potentially leading to a large-scale fire that poses a significant threat to the safety of people and property in the surrounding area. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an intelligent self-regulating heating cable with good flame retardant effect, which solves the problem of poor flame retardant effect of intelligent self-regulating heating cables.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a smart self-regulating heating cable with good flame retardant effect, comprising:

[0006] The intelligent self-regulating heating cable includes a cable conductor, cable sub-wires are provided on the surface of the cable conductor, and insulating rubber is fixedly connected to the surface of the cable conductor.

[0007] A toughness-reinforcing mechanism is disposed on the surface of the intelligent self-limiting temperature heating cable;

[0008] A flame-retardant sleeve includes a flame-retardant layer one, a flame-retardant strip one fixedly connected to the surface of the flame-retardant layer one, a flame-retardant layer two disposed on the surface of the flame-retardant strip one, a flame-retardant strip two disposed on the surface of the flame-retardant layer two, a heat-insulating sleeve disposed on the surface of the flame-retardant sleeve, the surface of the flame-retardant strip one being fixedly connected to the interior of the flame-retardant layer two by an organosilicon flame-retardant adhesive, and the surface of the flame-retardant strip two being fixedly connected to the interior of the flame-retardant layer two by a polyurethane flame-retardant adhesive.

[0009] As a preferred embodiment of this utility model, the toughness-enhancing mechanism includes a natural rubber rod, a fluororubber sleeve fixedly connected to the surface of the natural rubber rod, the interior of the fluororubber sleeve fixedly connected to the surface of the insulating rubber, and the interior of the flame-retardant layer one fixedly connected to the fluororubber sleeve.

[0010] In a preferred embodiment of this invention, the heat insulation sleeve comprises a polyethylene foam sleeve, the surface of which is provided with silicone rubber foam, the surface of which is provided with polyurethane soft foam, and the surface of which is covered with ethylene propylene rubber. The interior of the polyethylene foam sleeve is fixedly connected to the surface of the flame-retardant strip two by adhesive, the interior of the silicone rubber foam is fixedly connected to the surface of the polyethylene foam sleeve by adhesive, the surface of the silicone rubber foam is fixedly connected to the interior of the polyurethane soft foam by adhesive, and the surface of the polyurethane soft foam is fixedly connected to the interior of the ethylene propylene rubber by adhesive.

[0011] As a preferred embodiment of this utility model, a semi-circular connecting ring one is movably connected to the left side of the heat insulation sleeve, and a semi-circular connecting ring two is movably connected to the right side of the heat insulation sleeve, with the right side of the semi-circular connecting ring one contacting the left side of the semi-circular connecting ring two.

[0012] As a preferred embodiment of this utility model, bolts are provided at the top and bottom of the left side of the first semicircular connecting ring, the right side of the bolt passes through the first semicircular connecting ring and extends to the right side of the second semicircular connecting ring, and a threaded sleeve is threaded onto the surface of the bolt, the left side of the threaded sleeve is in contact with the second semicircular connecting ring.

[0013] As a preferred embodiment of this utility model, a connecting plate is fixedly connected to the left side of the first semicircular connecting ring and the right side of the second semicircular connecting ring, and through holes are provided at the top and bottom of the front of the connecting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model enables the cable to have flame-retardant capabilities by setting a flame-retardant sleeve. The flame-retardant sleeve has flame-retardant layer one, flame-retardant strip one, flame-retardant layer two, and flame-retardant strip two, which, together with organosilicon flame-retardant adhesive and polyurethane flame-retardant adhesive, form a multi-layer flame-retardant barrier. When the cable temperature rises due to a fault, the multi-layer flame-retardant structure can effectively delay and prevent the spread of flames, greatly reduce the probability of fire, significantly improve the flame-retardant performance of the cable, and ensure safe use.

[0016] 2. This utility model, by setting a toughness-enhancing mechanism, endows the cable with good flexibility and elasticity. The natural rubber rod itself has excellent elasticity and tensile strength, while the fluororubber sheath has good weather resistance and wear resistance. When the cable needs to be bent and stretched during installation, or when used in a vibrating environment, the toughness-enhancing mechanism can effectively buffer external forces and prevent the conductors and insulating rubber inside the cable from breaking and being damaged due to external forces. This not only ensures the stability of the cable's heating performance, but also extends the cable's service life and reduces safety hazards such as leakage caused by cable structural damage.

[0017] 3. This utility model uses a heat insulation sleeve, with multiple layers of foam and rubber materials of different materials working together to form a highly efficient heat insulation system. The polyethylene foam sleeve is lightweight and has good heat insulation performance, the silicone rubber foam has the characteristics of high temperature resistance and aging resistance, the polyurethane soft foam has excellent heat insulation effect, and the ethylene propylene rubber can enhance the protective performance of the overall structure. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present utility model;

[0019] Figure 2 This utility model Figure 1 Cross-sectional structural diagram;

[0020] Figure 3 This utility model Figure 1 3D structural diagram of the flame-retardant sleeve;

[0021] Figure 4 This utility model Figure 1 Three-dimensional structural diagram of the medium toughness strengthening mechanism;

[0022] Figure 5 This utility model Figure 1 Three-dimensional structural diagram of the heat insulation jacket.

[0023] In the diagram: 1. Intelligent self-regulating heating cable; 101. Cable conductor; 102. Cable sub-wire; 103. Insulating rubber; 2. Toughness-reinforcing mechanism; 21. Natural rubber roller; 22. Fluororubber sleeve; 3. Flame-retardant sleeve; 31. Flame-retardant layer one; 32. Flame-retardant strip one; 33. Flame-retardant layer two; 34. Flame-retardant strip two; 4. Heat insulation sleeve; 41. Polyethylene foam sleeve; 42. Silicone rubber foam; 43. Polyurethane soft foam; 44. Ethylene propylene rubber; 5. Semi-circular connecting ring one; 6. Semi-circular connecting ring two; 7. Bolt; 8. Screw sleeve; 9. Connecting plate; 10. Through hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown, the present invention provides an intelligent self-regulating heating cable with good flame retardant effect, comprising:

[0026] Intelligent self-regulating heating cable 1, the intelligent self-regulating heating cable 1 includes a cable conductor 101, a cable sub-wire 102 is provided on the surface of the cable conductor 101, and an insulating rubber 103 is fixedly connected to the surface of the cable conductor 101;

[0027] Toughness-reinforcing mechanism 2 is installed on the surface of intelligent self-limiting temperature heating cable 1;

[0028] The flame-retardant sleeve 3 includes a flame-retardant layer 31, which is made of chloroprene rubber and hydrogen chloride. A flame-retardant strip 32 is fixedly connected to the surface of the flame-retardant layer 31. A flame-retardant layer 33 is made of chlorinated polyethylene and silicone rubber. A flame-retardant layer 33 is provided on the surface of the flame-retardant strip 32. The flame-retardant layer 33 is made of chlorinated polyethylene and silicone rubber. A flame-retardant strip 34 is provided on the surface of the flame-retardant layer 33. The flame-retardant strip 34 is made of ceramicized silicone rubber and mica tape. A heat-insulating sleeve 4 is provided on the surface of the flame-retardant sleeve 3. The surface of the flame-retardant strip 32 is fixedly connected to the interior of the flame-retardant layer 33 by an organosilicon flame-retardant adhesive. The surface of the flame-retardant strip 34 is fixedly connected to the interior of the flame-retardant layer 33 by a polyurethane flame-retardant adhesive.

[0029] refer to Figure 2 The toughness-enhancing mechanism 2 includes a natural rubber rod 21, a fluororubber sleeve 22 fixedly connected to the surface of the natural rubber rod 21, the interior of the fluororubber sleeve 22 fixedly connected to the surface of the insulating rubber 103, and the interior of the flame-retardant layer 31 fixedly connected to the fluororubber sleeve 22.

[0030] As a technical optimization of this utility model, by setting up a toughness-enhancing mechanism 2, the cable is endowed with good flexibility and elasticity. The natural rubber roller 21 itself has excellent elasticity and tensile strength, while the fluororubber sleeve 22 has good weather resistance and wear resistance. When the cable needs to be bent and stretched during installation, or when used in a vibrating environment, the toughness-enhancing mechanism 2 can effectively buffer external forces and prevent the conductors and insulating rubber 103 inside the cable from breaking and being damaged due to external forces. This not only ensures the stability of the cable's heating performance, but also extends the cable's service life and reduces safety hazards such as leakage caused by cable structure damage.

[0031] refer to Figure 4 The heat insulation sleeve 4 includes a polyethylene foam sleeve 41, a silicone rubber foam 42 on the surface of the polyethylene foam sleeve 41, a polyurethane soft foam 43 on the surface of the silicone rubber foam 42, and an ethylene propylene rubber 44 on the surface of the polyurethane soft foam 43. The interior of the polyethylene foam sleeve 41 is fixedly connected to the surface of the flame retardant strip 34 by adhesive. The interior of the silicone rubber foam 42 is fixedly connected to the surface of the polyethylene foam sleeve 41 by adhesive. The surface of the silicone rubber foam 42 is fixedly connected to the interior of the polyurethane soft foam 43 by adhesive. The surface of the polyurethane soft foam 43 is fixedly connected to the interior of the ethylene propylene rubber 44 by adhesive.

[0032] As a technical optimization of this utility model, by setting up a heat insulation sleeve 4, multiple layers of foam and rubber materials of different materials work together to form an efficient heat insulation system. The polyethylene foam sleeve 41 is lightweight and has good heat insulation performance, the silicone rubber foam 42 has the characteristics of high temperature resistance and aging resistance, the polyurethane soft foam 43 has excellent heat insulation effect, and the ethylene propylene rubber 44 can enhance the protective performance of the overall structure.

[0033] refer to Figure 4 The left side of the heat insulation sleeve 4 is movably connected to a semi-circular connecting ring 5, and the right side of the heat insulation sleeve 4 is movably connected to a semi-circular connecting ring 6. The right side of the semi-circular connecting ring 5 contacts the left side of the semi-circular connecting ring 6.

[0034] As a technical optimization of this utility model, the separate opening and closing design of the semi-circular connecting ring 5 and the semi-circular connecting ring 6 demonstrates significant advantages. Workers only need to unscrew the bolt 7 and the screw sleeve 8 to separate the semi-circular connecting ring 5 and the semi-circular connecting ring 6, which allows for quick removal of the heat insulation sleeve 4 from the cable, enabling direct inspection of the cable's internal structure. During installation, the heat insulation sleeve 4 can be securely fitted onto the cable by simply snapping on the semi-circular connecting ring and tightening the bolt 7 and the screw sleeve 8.

[0035] refer to Figure 4 Bolts 7 are provided at the top and bottom of the left side of the semicircular connecting ring 1 5. The right side of the bolt 7 passes through the semicircular connecting ring 1 5 and extends to the right side of the semicircular connecting ring 2 6. The surface of the bolt 7 is threaded with a threaded sleeve 8. The left side of the threaded sleeve 8 contacts the semicircular connecting ring 2 6.

[0036] As a technical optimization of this utility model, the connection is made by setting bolts 7 and threaded sleeves 8. This connection method is simple and reliable, and can ensure that the semi-circular connecting ring 1 5 and the semi-circular connecting ring 2 6 fit tightly, thus ensuring the connection stability of the heat insulation sleeve 4. During the long-term use of the cable, even if it is subjected to external vibration or pulling, the tightening effect of bolts 7 and threaded sleeves 8 can prevent the semi-circular connecting ring 1 5 and the semi-circular connecting ring 2 6 from loosening, and prevent the heat insulation sleeve 4 from falling off, thereby continuously ensuring the heat insulation effect of the heat insulation sleeve 4 and the protection of the cable.

[0037] refer to Figure 4 A connecting plate 9 is fixedly connected to the left side of the semicircular connecting ring 1 5 and the right side of the semicircular connecting ring 2 6. Through holes 10 are provided at the top and bottom of the front of the connecting plate 9.

[0038] As a technical optimization of this utility model, by setting the connecting plate 9 and the through hole 10, the fixing and installation of the cable can be facilitated. By inserting fixing parts such as screws and rivets through the through hole 10, the cable can be fixed to the installation position such as the pipe and the wall, making the cable installation more firm and stable and less prone to displacement.

[0039] The working principle and usage process of this utility model are as follows: In use, the cable conductor 101 and the cable sub-conductor 102 form a current transmission channel. The insulating rubber 103 tightly wraps around the cable conductor 101 to ensure safe and stable current transmission. Its internal special polymer material achieves intelligent self-limiting temperature function. When the temperature rises, the conductive path between the carbon particles in the polymer material narrows, the resistance increases, and the heating power decreases accordingly. When the temperature drops, the resistance decreases, and the heating power increases, thereby maintaining a constant temperature. In the toughness-reinforcing mechanism 2, the natural rubber roller 21, with its high elasticity, deforms when the cable is subjected to bending, stretching, or other external forces, thus buffering the external forces. The externally wrapped fluororubber sheath 22 has good weather resistance. It is tightly connected to the insulating rubber 103, which evenly distributes external force and prevents the internal conductors of the cable and the insulating rubber 103 from breaking due to concentrated force. The flame-retardant sleeve 3 is composed of flame-retardant layer 1 31, flame-retardant strip 1 32, flame-retardant layer 2 33, and flame-retardant strip 2 34. Among them, flame-retardant layer 1 31 is made of chloroprene rubber and hydrogen chloride. Chloroprene rubber itself has a certain flame retardancy. When exposed to high temperature, hydrogen chloride is released, diluting the oxygen concentration and reducing the possibility of combustion. At the same time, the carbon layer formed by the decomposition of chloroprene rubber can block heat transfer. Flame-retardant strip 1 32 is composed of EPDM rubber and nitrile rubber. These two rubbers have good flame-retardant properties after blending and modification. Under the action of flame, EPDM rubber and nitrile rubber undergo cross-linking and carbonization reaction. The flame-retardant layer 33 is made of chlorinated polyethylene and silicone rubber. Chlorinated polyethylene decomposes upon heating, releasing hydrogen chloride gas to inhibit combustion. Silicone rubber forms an inorganic silicon-oxygen network structure with heat-insulating properties at high temperatures, further enhancing the flame-retardant effect. Flame-retardant strip 34 is made of ceramicized silicone rubber and mica tape. Ceramicized silicone rubber transforms into a hard ceramic body at high temperatures, acting as a physical barrier to prevent the transfer of flame and heat. Mica tape has excellent high-temperature resistance, maintaining structural stability at high temperatures. Working synergistically with ceramicized silicone rubber, it forms highly efficient flame-retardant protection. All components are interconnected via silicone flame-retardant adhesive and polyurethane flame-retardant adhesive. The insulation sleeve 4 is fixed in place, forming a multi-layered flame-retardant barrier. When the cable encounters high temperature or open flame, each layer of flame-retardant material plays its role in sequence, decomposing, isolating oxygen, cooling, and forming a carbonized layer or ceramic body. Layer by layer, it blocks flames and heat, achieving high-efficiency flame retardancy. The insulation sleeve 4 is composed of polyethylene foam sleeve 41, silicone rubber foam 42, polyurethane soft foam 43, and ethylene propylene rubber 44. The polyethylene foam sleeve 41 is lightweight and first blocks the heat generated by the cable. The silicone rubber foam 42, with its high temperature resistance and aging resistance, further blocks the heat diffusion. The polyurethane soft foam 43 enhances the heat insulation effect. The ethylene propylene rubber 44 provides physical protection to prevent the insulation sleeve 4 from being damaged. The multi-layered synergy reduces the heat loss of the cable and avoids excessively high surface temperature.

[0040] In summary, this intelligent self-regulating heating cable with excellent flame retardant effect possesses flame retardant capability through the installation of a flame retardant sleeve 3. The flame retardant layer 31, flame retardant strip 32, flame retardant layer 33, and flame retardant strip 34 of the flame retardant sleeve 3, together with silicone flame retardant adhesive and polyurethane flame retardant adhesive, form a multi-layer flame retardant barrier. When the cable temperature rises due to a fault, the multi-layer flame retardant structure can effectively delay and prevent the spread of flames, greatly reducing the probability of fire, significantly improving the flame retardant performance of the cable, and ensuring safe use.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart self-regulating heating cable with good flame retardant effect, characterized in that, include: Intelligent self-regulating heating cable (1), the intelligent self-regulating heating cable (1) includes a cable conductor (101), the surface of the cable conductor (101) is provided with a cable sub-wire (102), and the surface of the cable conductor (101) is fixedly connected with insulating rubber (103). A toughness-enhancing mechanism (2) is provided on the surface of the intelligent self-limiting heating cable (1); Flame-retardant sleeve (3), the flame-retardant sleeve (3) includes a flame-retardant layer one (31), a flame-retardant strip one (32) is fixedly connected to the surface of the flame-retardant layer one (31), a flame-retardant layer two (33) is provided on the surface of the flame-retardant strip one (32), a flame-retardant strip two (34) is provided on the surface of the flame-retardant sleeve (3), a heat-insulating sleeve (4) is provided on the surface of the flame-retardant sleeve (3), the surface of the flame-retardant strip one (32) is fixedly connected to the interior of the flame-retardant layer two (33) by silicone flame-retardant adhesive, and the surface of the flame-retardant strip two (34) is fixedly connected to the interior of the flame-retardant layer two (33) by polyurethane flame-retardant adhesive.

2. The intelligent self-regulating heating cable with good flame retardant effect according to claim 1, characterized in that: The toughness-enhancing mechanism (2) includes a natural rubber rod (21), a fluororubber sleeve (22) is fixedly connected to the surface of the natural rubber rod (21), the interior of the fluororubber sleeve (22) is fixedly connected to the surface of the insulating rubber (103), and the interior of the flame-retardant layer (31) is fixedly connected to the fluororubber sleeve (22).

3. The intelligent self-regulating heating cable with good flame retardant effect according to claim 2, characterized in that: The heat insulation sleeve (4) includes a polyethylene foam sleeve (41), the surface of which is provided with silicone rubber foam (42), the surface of which is provided with polyurethane soft foam (43), and the surface of which is covered with ethylene propylene rubber (44). The interior of the polyethylene foam sleeve (41) is fixedly connected to the surface of the flame retardant strip (34) by adhesive. The interior of the silicone rubber foam (42) is fixedly connected to the surface of the polyethylene foam sleeve (41) by adhesive. The surface of the silicone rubber foam (42) is fixedly connected to the interior of the polyurethane soft foam (43) by adhesive. The surface of the polyurethane soft foam (43) is fixedly connected to the interior of the ethylene propylene rubber (44) by adhesive.

4. The intelligent self-regulating heating cable with good flame retardant effect according to claim 3, characterized in that: The left side of the heat insulation sleeve (4) is movably connected to a semi-circular connecting ring one (5), and the right side of the heat insulation sleeve (4) is movably connected to a semi-circular connecting ring two (6). The right side of the semi-circular connecting ring one (5) is in contact with the left side of the semi-circular connecting ring two (6).

5. The intelligent self-regulating heating cable with good flame retardant effect according to claim 4, characterized in that: Bolts (7) are provided at the top and bottom of the left side of the first semicircular connecting ring (5). The right side of the bolt (7) passes through the first semicircular connecting ring (5) and extends to the right side of the second semicircular connecting ring (6). The surface of the bolt (7) is threaded with a threaded sleeve (8). The left side of the threaded sleeve (8) contacts the second semicircular connecting ring (6).

6. The intelligent self-regulating heating cable with good flame retardant effect according to claim 5, characterized in that: A connecting plate (9) is fixedly connected to the left side of the first semicircular connecting ring (5) and the right side of the second semicircular connecting ring (6). The top and bottom of the front of the connecting plate (9) are provided with through holes (10).

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