High-temperature-corrosion-resistant mineral insulated electric tracing band

Abstract

The utility model discloses a mineral insulated electric tracing band resistant to high temperature corrosion, which comprises two guide cores and an alloy sheath, the two guide cores are symmetrically arranged on the inner side of the alloy sheath, the surfaces of the guide cores are respectively sleeved with color separation sleeves, and the colors of the two color separation sleeves are different. A magnesium oxide insulating layer and a tensile reinforcing layer are arranged between the guide core and the alloy sheath, an inner temperature conducting structure and an outer temperature conducting structure are arranged on the inner side of the tensile reinforcing layer, and the inner temperature conducting structure is wound and connected outside the guide core. According to the utility model, the inner temperature conduction structure and the outer temperature conduction structure are arranged inside the electric tracing band, and heat on one side far away from a pipeline is subjected to thermal compensation to the other side through the inner temperature conduction structure and the outer temperature conduction structure in the use process, so that the loss of heat from the outer side surface of the tracing band can be reduced, and the heat energy utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric heating tape technology, specifically a mineral-insulated electric heating tape that is resistant to high temperature and corrosion. Background Technology

[0002] Mineral-insulated electric heating cables are special cables that convert electrical energy into heat energy for heat tracing and insulation of pipelines or equipment. Their core feature is the use of mineral materials as the insulation layer, combined with a metal sheath, giving them properties such as high temperature resistance, corrosion resistance, and high mechanical strength. They are widely used in industrial and energy fields for freeze protection, heat preservation, or maintaining process temperatures.

[0003] Existing electric heating cables are wrapped around the outside of pipes when heating them. After generating heat, the side of the electric heating cable that is in contact with the pipe wall exchanges heat with the pipe, while the other side causes heat loss, resulting in waste of resources. To address this, a mineral-insulated electric heating cable that is resistant to high temperature and corrosion is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-temperature corrosion resistant mineral-insulated electric heating tape, which solves the problem that existing electric heating tapes are wrapped around the outside of the pipe when heating the pipe. After the electric heating tape generates heat, the side that is in contact with the pipe wall exchanges heat with the pipe, while the other side causes heat loss, resulting in resource waste.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-temperature corrosion resistant mineral-insulated electric heating tape, comprising a conductor core and an alloy sheath, characterized in that: two conductor cores are provided and symmetrically arranged inside the alloy sheath, and color-separated sleeves are respectively fitted on the surface of the conductor cores, with the two color-separated sleeves being different colors; a magnesium oxide insulation layer and a tensile reinforcing layer are provided between the conductor core and the alloy sheath, and an inner temperature-conducting structure and an outer temperature-conducting structure are provided inside the tensile reinforcing layer, with the inner temperature-conducting structure wound and connected to the outside of the conductor core.

[0008] As a further preferred embodiment of this utility model, both the inner and outer temperature-conducting structures are composed of two temperature-conducting plates and several temperature-conducting wires. The two temperature-conducting plates are respectively placed between two cores, and the distance between the two temperature-conducting plates is the same as the diameter of the cores.

[0009] As a further preferred embodiment of this utility model, the two ends of the temperature-conducting wire are respectively connected to the two sides of the temperature-conducting plate, and the temperature-conducting wire has an arc-shaped structure and is wrapped around the outer wall of the core.

[0010] As a further preferred embodiment of this utility model, the magnesium oxide insulating layer is disposed on the inner side of the outer and inner temperature-conducting structures, and a plurality of tensile cores are disposed within the magnesium oxide insulating layer.

[0011] As a further preferred embodiment of this utility model, a plurality of temperature collection grooves are evenly arranged on the outer wall of the alloy sheath.

[0012] As a further preferred embodiment of this invention, the tensile reinforcing layer is filled with Kevlar fibers.

[0013] (III) Beneficial Effects

[0014] This invention provides a mineral-insulated electric heating tape that is resistant to high temperature and corrosion. It has the following beneficial effects:

[0015] This invention incorporates an internal and external heat-conducting structure within the electric heat tracing tape. During use, these structures transfer heat from the side furthest from the pipe to the other side for thermal compensation, reducing heat loss from the outer surface of the heat tracing tape and improving thermal energy utilization. Attached Figure Description

[0016] Figure 1 This is a diagram showing the external structure of the high-temperature corrosion resistant mineral-insulated electric heating tape of this invention.

[0017] Figure 2 This is a diagram showing the internal structure of the high-temperature corrosion resistant mineral-insulated electric heating tape of this invention.

[0018] Figure 3 This is a structural diagram of the internal temperature-conducting structure described in this utility model.

[0019] In the diagram: 1. Conductor core; 2. Alloy sheath; 3. Heat collection groove; 4. Inner heat conduction structure; 5. Tensile reinforcement layer; 6. Outer heat conduction structure; 7. Color-coded sleeve; 8. Magnesium oxide insulation layer; 9. Heat conduction wire; 10. Heat conduction plate. 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 1-3This utility model provides a technical solution: a high-temperature corrosion resistant mineral-insulated electric heating tape, comprising a conductor core 1 and an alloy sheath 2. Two conductor cores 1 are symmetrically arranged inside the alloy sheath 2. Color-separated sleeves 7 are fitted onto the surface of each conductor core 1, with the two sleeves being different colors to distinguish phase or polarity, facilitating installation and maintenance. The color-separated sleeves 7 are made of modified polyolefin treated with β-electron rays, exhibiting a stable molecular structure, improving insulation stability and the ability to withstand impulse voltage, and achieving environmental protection. A magnesium oxide insulation layer 8 and a tensile reinforcement layer 5 are provided between the core 1 and the alloy sheath 2. The magnesium oxide insulation layer 8 is a high-temperature inorganic insulating material with excellent electrical insulation and thermal conductivity, which can effectively isolate current leakage and improve heat tracing efficiency. The tensile reinforcement layer 5 is used to enhance the mechanical strength of the overall structure and improve the ability of the electric heat tracing cable to withstand tensile stress during construction or long-term use. An inner heat-conducting structure 4 and an outer heat-conducting structure 6 are provided on the inner side of the tensile reinforcement layer 5. The inner heat-conducting structure 4 is wound and connected to the outside of the core 1 to capture and distribute the heat released by the core 1.

[0022] In a further improvement, both the inner and outer heat-conducting structures 4 and 6 consist of two heat-conducting plates 10 and several heat-conducting wires 9. The two heat-conducting plates 10 are respectively placed between the two cores 1, and the distance between the two heat-conducting plates 10 is the same as the diameter of the core 1, forming a stable heat conduction layout. The two ends of the heat-conducting wires 9 are connected to the two sides of the heat-conducting plates 10, respectively. The heat-conducting wires 9 have an arc-shaped structure and are wrapped around the outer wall of the core 1. Through their excellent thermal conductivity, they achieve effective heat conduction from the high-temperature area to the low-temperature area. The heat is conducted from the high-temperature side to the other side through the heat-conducting wires 9 and the heat-conducting plates 10. The heat-conducting plates 10 and the heat-conducting wires 9 can be made of thermally conductive silicone or thermally conductive metal materials, taking into account both flexibility and high thermal conductivity.

[0023] Further improvements include the magnesium oxide insulation layer 8 being disposed inside the outer thermal conductive structure 6 and the inner thermal conductive structure 4, and the magnesium oxide insulation layer 8 containing several tensile cores to improve tensile performance.

[0024] Further improvements include the uniform arrangement of several heat collection grooves 3 on the outer wall of the alloy sheath 2. The positions of the heat collection grooves 3 correspond to the positions of the heat conduction plate 10. The heat collection grooves 3 have a certain heat collection effect, effectively improving the heat collection efficiency. At the same time, due to the groove structure on its surface, it also has a certain anti-slip effect, enhancing the contact stability between the electric heat tracing cable and the surface of the heated body during the laying process.

[0025] Further improvements include filling the tensile reinforcement layer 5 with Kevlar fiber. As a high-performance aramid material, Kevlar fiber has extremely high tensile strength and thermal stability, which can significantly improve the structural strength and mechanical durability of the heat tracing cable, making it particularly suitable for long-distance laying and applications under harsh working conditions.

[0026] Working principle: The electric heating tape is wrapped around the pipe. The heat collection groove 3 can play an anti-slip role. After the electric heating tape is energized, it heats up and exchanges heat with the pipe. The heat collection groove 3 can also concentrate heat and improve the heat exchange effect. During the heat exchange process, the temperature of the side that is in contact with the pipe wall is lower than that of the other side. The heat conduction wire 9 guides the heat from the other side to the contact surface between the electric heating tape and the pipe to compensate for the heat loss, reduce the heat loss from the outer side of the heating tape, and improve the heat energy utilization rate.

[0027] The components of this utility model are: 1. Conductor core; 2. Alloy sheath; 3. Heat collection groove; 4. Inner heat conduction structure; 5. Tensile reinforcement layer; 6. Outer heat conduction structure; 7. Color-coded sleeve; 8. Magnesium oxide insulation layer; 9. Heat conduction wire; 10. Heat conduction plate. All components are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that when existing electric heating tapes are wrapped around the outside of the pipe for heating, the side of the electric heating tape that is in contact with the pipe wall after generating heat exchanges with the pipe, while the other side will cause heat loss, resulting in resource waste. This utility model, through the combination of the above components, sets up an inner heat conduction structure 4 and an outer heat conduction structure 6 inside the electric heating tape. During use, the inner heat conduction structure 4 and the outer heat conduction structure 6 are used to transfer heat from the side away from the pipe to the other side for heat compensation, which can reduce heat loss from the outer side of the heating tape and improve heat energy utilization. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mineral-insulated electric heating tape resistant to high temperature and corrosion, comprising a conductor core (1) and an alloy sheath (2), characterized in that: Two conductor cores (1) are provided and symmetrically arranged inside the alloy sheath (2). The surfaces of the conductor cores (1) are respectively fitted with color-separated sleeves (7) and the two color-separated sleeves (7) are different colors. A magnesium oxide insulating layer (8) and a tensile reinforcing layer (5) are provided between the conductor cores (1) and the alloy sheath (2). An inner thermal conductive structure (4) and an outer thermal conductive structure (6) are provided inside the tensile reinforcing layer (5). The inner thermal conductive structure (4) is wound and connected to the outside of the conductor cores (1).

2. The high-temperature corrosion resistant mineral-insulated electric heating tape according to claim 1, characterized in that: The inner temperature-conducting structure (4) and the outer temperature-conducting structure (6) are both composed of two temperature-conducting plates (10) and several temperature-conducting wires (9). The two temperature-conducting plates (10) are respectively placed between the two cores (1), and the distance between the two temperature-conducting plates (10) is the same as the diameter of the core (1).

3. The high-temperature corrosion resistant mineral-insulated electric heating tape according to claim 2, characterized in that: The two ends of the heat-conducting wire (9) are respectively connected to the two sides of the heat-conducting plate (10). The heat-conducting wire (9) has an arc-shaped structure and is wrapped around the outer wall of the core (1).

4. The high-temperature corrosion resistant mineral-insulated electric heating tape according to claim 1, characterized in that: The magnesium oxide insulating layer (8) is disposed inside the outer thermal conductive structure (6) and the inner thermal conductive structure (4), and a plurality of tensile cores are disposed inside the magnesium oxide insulating layer (8).

5. The high-temperature corrosion resistant mineral-insulated electric heating tape according to claim 1, characterized in that: The outer wall of the alloy sheath (2) is uniformly provided with several heat collection grooves (3).

6. The high-temperature corrosion resistant mineral-insulated electric heating tape according to claim 1, characterized in that: The tensile reinforcement layer (5) is filled with Kevlar fibers.

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