A highly stable and durable mineral-insulated electric heating tape

Abstract

This utility model discloses a highly stable and durable mineral-insulated electric heating tape, comprising a heating core, a mineral insulation layer, a heat insulation layer, and an outer sheath. The surface of the heating core is covered with the mineral insulation layer and the heat insulation layer, and the surface of the mineral insulation layer is covered with the outer sheath. The heating core includes wire cores, a sheath, and an inner liner support. The surface of the wire cores is covered with the sheath, and the wire cores include at least two wires distributed parallel to each other. An inner liner support is provided between the wire cores, and the wire cores and the inner liner support are interlocked. The heat insulation layer is offset on the upper side of the heating core and partially covers the surface of the heating core. This utility model utilizes the heating core, mineral insulation layer, heat insulation layer, and outer sheath to form a mineral-insulated electric heating tape, increasing the contact area between the electric heating tape and the object surface during use, thereby improving the efficiency of heat transfer and reducing unnecessary heat loss. Furthermore, by providing an inner liner support between the heating cores, the consistency of the wire core distribution during production and use is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric heating tape technology, specifically a highly stable and durable mineral-insulated electric heating tape. Background Technology

[0002] Electric heating tape consists of a conductive polymer, two parallel metal wires, and an insulating sheath. Its key features include a high positive temperature coefficient of the conductive polymer, and the parallel connection of the wires allows for automatic adjustment of output power based on temperature changes in the heated system. It automatically limits the heating temperature, can be cut to any length or extended within a certain range, and allows for multiple overlaps without the risk of overheating or burning. Electric heating tape is commonly used for insulation and freeze protection of industrial and agricultural pipelines. Workers lay and secure the heating tape to the pipeline, where it generates heat to insulate and prevent freezing.

[0003] Currently, existing mineral-insulated electric heating cables on the market experience a uniform heat transfer during the heating process, leading to an overall temperature increase. However, in practical use, the side of the cable in contact with the object's surface transfers heat best, resulting in heat loss on the back side. This also easily damages the aluminum foil tape or insulation cotton used to fix the surface. Furthermore, the production of multi-core mineral-insulated electric heating cables can easily cause misalignment of the wires, affecting the stability of the cable's use. Therefore, a highly stable and durable mineral-insulated electric heating cable is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a highly stable and durable mineral-insulated electric heating tape, solving the problems of significant heat waste in practical use and easy misalignment during the production of multi-core electric heating tapes. This invention utilizes a heating core, a mineral insulation layer, a heat insulation layer, and an outer sheath to form a mineral-insulated electric heating tape, increasing the contact area between the electric heating tape and the object surface during use, thereby improving the efficiency of heat transfer and reducing unnecessary heat loss. Furthermore, by providing an inner lining support between the heating cores, the consistency of the core distribution during production and use is improved, preventing core misalignment and enhancing the stability and safety of the electric heating tape.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a highly stable and durable mineral-insulated electric heating tape, comprising a heating core, a mineral insulation layer, a heat insulation layer, and an outer sheath. The surface of the heating core is covered with the mineral insulation layer and the heat insulation layer, and the surface of the mineral insulation layer is covered with the outer sheath. The heating core includes a wire core, a sheath, and an inner liner support. The surface of the wire core is covered with the sheath. The wire core includes at least two wires that are distributed parallel to each other. An inner liner support is provided between the wire cores. The wire cores and the inner liner support are interlocked and connected. The heat insulation layer is offset to one side of the heating core.

[0008] As an improvement to the above technical solution, the heat insulation layer partially wraps around the surface of the heating core.

[0009] As an improvement to the above technical solution, the heat insulation layer is made of rock wool or aerogel material, and the inner wall of the heat insulation layer is also provided with a heat reflective film.

[0010] As an improvement to the above technical solution, the side wall of the inner lining bracket is provided with a fastening groove, and the interior of the inner lining bracket is provided with cross-shaped support ribs.

[0011] As an improvement to the above technical solution, the outer sheath is made of stainless steel and is distributed in a flat shape.

[0012] As an improvement to the above technical solution, the upper surface of the outer sheath is provided with a heat-insulating coating, and the lower surface of the outer sheath is provided with a brushed texture.

[0013] (III) Beneficial Effects

[0014] This invention provides a highly stable and durable mineral-insulated electric heating tape. It has the following beneficial effects:

[0015] This invention utilizes a heating core, a mineral insulation layer, a heat insulation layer, and an outer sheath to form a mineral-insulated electric heating tape. This increases the contact area between the electric heating tape and the surface of the object during use, thereby improving the efficiency of heat transfer and reducing unnecessary heat loss. Furthermore, by providing an inner lining support between the heating cores, the consistency of the distribution of the wire cores during production and use is improved, preventing misalignment of the wire cores and enhancing the stability and safety of the electric heating tape. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the upper surface of the high-stability and durable mineral-insulated electric heating tape of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the lower surface of the high-stability and durable mineral-insulated electric heating tape of this utility model;

[0018] Figure 3This is a schematic diagram of the end face of the high-stability, durable mineral-insulated electric heating tape of this utility model.

[0019] In the diagram: heating core-1, mineral insulation layer-2, heat insulation layer-3, outer sheath-4, wire core-5, sheath-6, inner lining support-7, heat reflective film-8, fastening groove-9, support rib-10, heat insulation coating-11, brushed texture-12. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a highly stable and durable mineral-insulated electric heating tape, comprising a heating core 1, a mineral insulation layer 2, a heat insulation layer 3, and an outer sheath 4. The surface of the heating core 1 is covered with the mineral insulation layer 2 and the heat insulation layer 3, and the surface of the mineral insulation layer 2 is covered with the outer sheath 4. The heating core 1 includes a wire core 5, a sheath 6, and an inner liner support 7. The surface of the wire core 5 is covered with the sheath 6. The wire core 5 includes at least two wires that are distributed parallel to each other. An inner liner support 7 is provided between the wire cores 5. The wire core 5 and the inner liner support 7 are interlocked and connected. The heat insulation layer 3 is offset to one side of the heating core 1.

[0022] In a further improvement, the heat insulation layer 3 partially wraps around the surface of the heating core 1.

[0023] Further improvements include the use of rock wool or aerogel material for the insulation layer 3, and the inner wall of the insulation layer 3 is provided with a heat-reflective film 8. By providing a semi-enclosed heat-insulating layer on the upper side of the heating core 1, in conjunction with the heat-reflective film 8, the heat generated by the heating core 1 is reduced from being transferred to the upper side, thereby reducing heat loss.

[0024] Further improvements include a fastening groove 9 on the side wall of the inner lining bracket 7, and cross-shaped support ribs 10 inside the inner lining bracket 7. By providing a fastening groove 9 on the side wall of the inner lining bracket 7, it is convenient to limit the position of the wire core 5 during the production process, improve the consistency of the spacing between the wire cores 5, and enhance the stability of the electric heating tape.

[0025] Further improvements include the outer sheath 4 being made of stainless steel, and the outer sheath 4 being flat. By using stainless steel for the outer sheath 4, the durability and stability of the electric heating tape in harsh environments are improved. The flat outer sheath 4 can also improve the uniformity of the distribution of the wire cores 5, while increasing the contact area between the electric heating tape and the object surface, thereby enhancing the thermal conductivity of the electric heating tape.

[0026] Specifically, the outer sheath 4 has a heat-insulating coating 11 on its upper surface and a brushed texture 12 on its lower surface. The heat-insulating coating 11 on the upper surface of the outer sheath 4 prevents the temperature of the upper surface from becoming too high after the outer sheath 4 is heated, which could damage the aluminum foil tape or insulation cotton adhered to the surface. The brushed texture 12 on the lower surface of the outer sheath 4 increases the friction of the surface of the electric heating cable during use, thereby improving the stability of the electric heating cable fixation.

[0027] In use, the mineral-insulated electric heating tape is spirally and evenly wound around the surface of the pipe fitting, so that the side of the outer sheath 4 with the brushed texture 12 is tightly attached to the surface of the pipe fitting. The wire core 5 is connected to the controller, and the controller controls the heating core 1 to generate temperature to heat the surface of the pipe fitting. When the wire core 5 heats up, the heat insulation layer 3 can reduce the outward transfer of heat, and the heat reflection film 8 can reflect some of the heat energy to the other side, thereby improving the concentration and stability of the heat transfer of the electric heating tape.

[0028] This invention addresses the problem that existing mineral-insulated electric heating cables on the market suffer from uneven heat transfer during heating, leading to a general temperature increase. In practical use, the side of the cable in contact with the object's surface transfers heat well, resulting in wasted heat on the back side. This also easily damages the aluminum foil tape or insulation cotton fixing the surface. Furthermore, the production of multi-core mineral-insulated electric heating cables can easily cause misalignment of the wires, affecting the stability of the cable. This invention utilizes a heating core 1, a mineral insulation layer 2, a heat insulation layer 3, and an outer sheath 4 to form a mineral-insulated electric heating cable, increasing the contact area between the cable and the object's surface during use. This improves the efficiency of heat transfer, reduces unnecessary heat loss, and by providing an inner support 7 between the heating cores 1, improves the consistency of the wire core distribution during production and use, preventing misalignment and enhancing the stability and safety of the electric heating cable.

[0029] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-stability, durable mineral-insulated electric heating tape, comprising a heating core (1), a mineral insulation layer (2), a heat insulation layer (3), and an outer sheath (4), characterized in that: The surface of the heating core (1) is covered with a mineral insulation layer (2) and a heat insulation layer (3). The surface of the mineral insulation layer (2) is covered with an outer sheath (4). The heating core (1) includes a wire core (5), a sheath (6) and an inner liner support (7). The surface of the wire core (5) is covered with a sheath (6). The wire core (5) includes at least two wires that are distributed parallel to each other. An inner liner support (7) is provided between the wire cores (5). The wire core (5) and the inner liner support (7) are fastened together. The heat insulation layer (3) is offset to one side of the heating core (1).

2. The high-stability, durable mineral-insulated electric heating tape according to claim 1, characterized in that: The heat insulation layer (3) partially wraps around the surface of the heating core (1).

3. The high-stability, durable mineral-insulated electric heating tape according to claim 1, characterized in that: The heat insulation layer (3) is made of rock wool or aerogel material, and the inner wall of the heat insulation layer (3) is also provided with a heat reflective film (8).

4. The high-stability, durable mineral-insulated electric heating tape according to claim 1, characterized in that: The inner lining support (7) has a fastening groove (9) on its side wall, and the inner lining support (7) has cross-shaped support ribs (10) inside.

5. The high-stability, durable mineral-insulated electric heating tape according to claim 1, characterized in that: The outer sheath (4) is made of stainless steel and is distributed in a flat shape.

6. The high-stability, durable mineral-insulated electric heating tape according to claim 1, characterized in that: The upper surface of the outer sheath (4) is provided with a heat insulation coating (11), and the lower surface of the outer sheath (4) is provided with a brushed texture (12).

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