Constant-temperature explosion-proof electric tracing band

Abstract

The utility model discloses a constant-temperature explosion-proof electric tracing band, which comprises two groups of cable cores, a second insulating layer is arranged outside the cable cores, a shielding layer is arranged outside the second insulating layer, a composite thermal insulation layer is arranged outside the shielding layer, a composite protective layer is arranged outside the composite thermal insulation layer, and a heat-insulating layer is arranged outside the composite protective layer. And a filling layer is arranged in a gap between the wire core and the second insulating layer, so that the problems that heat generated by the electric tracing band is easily dissipated to the environment and the protective property of the surface of the electric tracing band is not good enough are solved.

Description

Technical Field

[0001] This utility model relates to the field of electric heating tape technology, specifically a constant temperature explosion-proof electric heating tape. Background Technology

[0002] Electric heating tape, also known as electric heating cable or electric heat tracing system, is a device that converts electrical energy into heat energy. Its working principle is mainly based on the generation of heat by current passing through a resistance wire, which is then transferred to the object to be heated through an insulation layer and sheath. Electric heating tapes are widely used in industrial pipeline heating, storage tank insulation, civil pipeline antifreeze, chemical process heating, and other fields. During installation, it is essential to ensure that the electric heating tape is in close contact with the object being heated to improve heat transfer efficiency. Dust and dirt on the surface of the electric heating tape should be cleaned to maintain its good heat dissipation performance. Constant temperature and explosion-proof features are important characteristics of electric heating tapes.

[0003] For example, Chinese patent CN208597185U, entitled "An Electric Heat Tracing Cable," includes an electric heat tracing cable body and a thermochromic layer covering the body that changes color with temperature. The thermochromic layer changes color according to temperature changes in the electric heat tracing cable body, allowing inspection personnel to check for malfunctions based on the color change displayed by the thermochromic layer. The thermochromic layer is a coating made of a thermosensitive color-changing material, which is applied to the outer surface of the electric heat tracing cable body via coating. The thermosensitive color-changing material is obtained through vapor deposition or chemical vapor deposition. The thermochromic layer is deposited on the outer surface of the electric heat tracing cable body. The thermochromic layer is a thin film that changes color with temperature. The film is adhered to the outer surface of the electric heat tracing cable body by an adhesive method. The thermochromic ink layer is formed on the outer surface of the electric heat tracing cable body by screen printing. When the temperature of the electric heat tracing cable body is higher than or equal to a preset temperature, the thermochromic layer displays a first color. When the temperature of the electric heat tracing cable body is lower than the preset temperature, the thermochromic layer displays a second color. The first color is green, and the second color is red.

[0004] While the existing technologies described above enable the use of electric heating cables, in practical applications, the heat generated by the cables easily dissipates into the environment. Typically, most of the heat generated by the cables is transferred to the environment through thermal radiation, leaving only a small portion transferred to the pipes, thus reducing the heating effect. Furthermore, the cable sheath is not sufficiently protected. Since the cables are usually installed outside the pipes and exposed to the environment, environmental factors can damage the sheath, shortening the cable's lifespan. Therefore, these technologies do not meet current requirements. To address this, we propose a constant-temperature explosion-proof electric heating cable. Utility Model Content

[0005] The purpose of this invention is to provide a constant temperature explosion-proof electric heating cable to solve the problems mentioned in the background art, such as the heat generated by the electric heating cable easily dissipating into the environment and the insufficient protection of the electric heating cable skin.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a constant temperature explosion-proof electric heating tape, comprising a wire core, wherein two sets of wire cores are provided, a second insulation layer is provided outside the wire core, a shielding layer is provided outside the second insulation layer, a composite heat preservation layer is provided outside the shielding layer, a composite protective layer is provided outside the composite heat preservation layer, and a filling layer is provided in the gap between the wire core and the second insulation layer.

[0007] Preferably, the wire core consists of a conductor and a first insulating layer, the conductor is made of multiple strands of metal wires twisted together, and the conductor is provided with a first insulating layer on its exterior.

[0008] Preferably, the composite insulation layer consists of an outer insulation layer, an insulation reinforcement layer, and an inner insulation layer. The inner insulation layer is sleeved on the outside of the shielding layer, the insulation reinforcement layer is wrapped around the outside of the inner insulation layer, and the outer insulation layer is wrapped around the outside of the insulation reinforcement layer.

[0009] Preferably, the composite protective layer consists of a protective outer layer, a protective reinforcing layer, and a protective base layer. The protective base layer is wrapped around the outside of the thermal insulation outer layer, the protective reinforcing layer is extruded around the outside of the protective base layer, and the protective outer layer is extruded around the outside of the protective reinforcing layer.

[0010] Preferably, a reinforcing rib is inserted at the center of the filling layer.

[0011] Preferably, both the first insulating layer and the second insulating layer are made of phenolic resin material.

[0012] Preferably, the shielding layer is made of conductive PVC material.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can reduce the heat dissipation of the wire core by setting a composite insulation layer. The outer insulation layer can improve the insulation capacity of the wire core and form a thermal insulation barrier to effectively prevent heat loss through heat conduction and heat convection, thereby improving thermal efficiency. At the same time, the outer insulation layer can slow down the rate of heat loss, making the temperature of the pipeline or equipment more stable. The insulation reinforcement layer can improve the explosion-proof capability of the electric heating tape and prevent the electric heating tape from exploding due to electrical sparks or high temperature in specific environments, effectively ensuring production safety. The inner insulation layer can improve the support performance of the wire core and prevent current leakage, avoiding electric shock accidents. At the same time, the inner insulation layer can tightly wrap the internal components of the electric heating tape to prevent physical damage caused by collision, friction or squeezing during installation and use, ensuring the stability and durability of the electric heating tape in harsh environments.

[0015] (2) By setting a composite protective layer, this utility model can improve the protective performance of the electric heat tracing cable skin. The protective outer layer can improve the wear resistance of the electric heat tracing cable skin. The electric heat tracing cable may be subjected to various collisions, friction or compression. The presence of the protective outer layer can effectively resist these external forces and protect the electric heat tracing cable from damage. The protective reinforcement layer can improve the corrosion resistance of the electric heat tracing cable skin. The presence of the protective reinforcement layer can form a protective barrier to prevent corrosive media from directly contacting the electric heat tracing cable, thereby extending the service life of the electric heat tracing cable. The protective base layer can improve the waterproof performance of the electric heat tracing cable skin. The protective base layer helps to maintain a dry working environment around the electric heat tracing cable and avoid short circuits, corrosion and other failures caused by water intrusion.

[0016] (3) This utility model improves the toughness of the electric heating tape by using reinforcing ribs and a filling layer. The reinforcing ribs make the electric heating tape more durable during use and less susceptible to damage from external forces. At the same time, the electric heating tape can better adapt to various complex installation environments and conditions, ensuring its reliability and stability in practical applications. The filling layer can reduce the gaps between the wire cores. The filling layer has good insulation and fire resistance properties. When the electric heating tape is working, the filling layer can effectively isolate current and heat, preventing safety accidents such as fire and electric shock, while improving the stability of wire core installation. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0019] Figure 3 This is an enlarged view of the internal structure of the composite insulation layer in this practical application;

[0020] Figure 4 This is an enlarged view of the internal structure of the composite protective layer in this practical application.

[0021] In the diagram: 1. Core wire; 2. Conductor; 3. First insulation layer; 4. Filler layer; 5. Reinforcing rib; 6. Second insulation layer; 7. Shielding layer; 8. Composite insulation layer; 801. Outer insulation layer; 802. Intensive insulation layer; 803. Inner insulation layer; 9. Composite protective layer; 901. Outer protective layer; 902. Intensive protective layer; 903. Base protective layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 An embodiment of this utility model provides a constant temperature explosion-proof electric heating tape, including a wire core 1, which is provided in two sets. A second insulation layer 6 is provided on the outside of the wire core 1. A shielding layer 7 is provided on the outside of the second insulation layer 6. A composite heat preservation layer 8 is provided on the outside of the shielding layer 7. A composite protective layer 9 is provided on the outside of the composite heat preservation layer 8. A filling layer 4 is provided in the gap between the wire core 1 and the second insulation layer 6. The wire core 1 is composed of a conductor 2 and a first insulation layer 3. The conductor 2 is made of multiple metal wires twisted together. The first insulation layer 3 is provided on the outside of the conductor 2. Both the first insulation layer 3 and the second insulation layer 6 are made of phenolic resin material. The shielding layer 7 is made of conductive PVC material. The filling layer 4 is made of glass fiber material.

[0024] Please see Figure 2 and Figure 3 The composite insulation layer 8 consists of an outer insulation layer 801, an insulation reinforcement layer 802, and an inner insulation layer 803. The inner insulation layer 803 is sleeved on the outside of the shielding layer 7. The insulation reinforcement layer 802 is wrapped around the outside of the inner insulation layer 803. The outer insulation layer 801 is wrapped around the outside of the insulation reinforcement layer 802. The outer insulation layer 801 is made of asbestos fiber material. The insulation reinforcement layer 802 is made of aerogel felt woven from composite aerogel inorganic fibers. The inorganic fibers are immersed in a composite nanofiber aerogel solution and freeze-dried. The inner insulation layer 803 is made of aluminum alloy corrugated pipe to facilitate the passage of the composite insulation layer 8, thereby improving the insulation capacity of the core 1.

[0025] Please see Figure 2 and Figure 4The composite protective layer 9 consists of an outer protective layer 901, a reinforcing protective layer 902, and a base protective layer 903. The base protective layer 903 is wrapped around the outside of the outer insulating layer 801, the reinforcing protective layer 902 is extruded around the outside of the base protective layer 903, and the outer protective layer 901 is extruded around the outside of the reinforcing protective layer 902. The outer protective layer 901 is made of PET material, the reinforcing protective layer 902 is made of a mixture of epoxy resin and polypropylene, and the base protective layer 903 is made of a waterproof and breathable membrane material.

[0026] Please see Figure 1 and Figure 2 A reinforcing rib 5 is inserted at the center of the filling layer 4. The reinforcing rib 5 is made of nylon rubber material, which can improve the toughness of the electric heating cable.

[0027] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A constant temperature explosion-proof electric tracing band, comprising a wire core (1), the wire core (1) is provided with two groups, characterized in that: The outer part of the core (1) is provided with a second insulation layer (6), the outer part of the second insulation layer (6) is provided with a shielding layer (7), the outer part of the shielding layer (7) is provided with a composite thermal insulation layer (8), the outer part of the composite thermal insulation layer (8) is provided with a composite protection layer (9), and the gap between the core (1) and the second insulation layer (6) is provided with a filling layer (4).

2. The constant temperature explosion-proof electric tracing band according to claim 1, characterized in that: The core (1) is composed of a conductor (2) and a first insulation layer (3), the conductor (2) is twisted by a plurality of metal wires, and the outer part of the conductor (2) is provided with the first insulation layer (3).

3. The constant temperature explosion-proof electric tracing band according to claim 2, characterized in that: The composite thermal insulation layer (8) is composed of a thermal insulation outer layer (801), a thermal insulation reinforcing layer (802) and a thermal insulation inner layer (803), the thermal insulation inner layer (803) is sleeved on the outer part of the shielding layer (7), the thermal insulation reinforcing layer (802) is wrapped on the outer part of the thermal insulation inner layer (803), and the thermal insulation outer layer (801) is wrapped on the outer part of the thermal insulation reinforcing layer (802).

4. The constant temperature explosion-proof electric tracing band according to claim 3, characterized in that: The composite protection layer (9) is composed of a protection outer layer (901), a protection reinforcing layer (902) and a protection base layer (903), the protection base layer (903) is wrapped on the outer part of the thermal insulation outer layer (801), the protection reinforcing layer (902) is extruded on the outer part of the protection base layer (903), and the protection outer layer (901) is extruded on the outer part of the protection reinforcing layer (902).

5. The constant temperature explosion-proof electric tracing band according to claim 4, characterized in that: The reinforcing rib (5) is inserted and arranged at the central position in the filling layer (4).

6. The constant temperature explosion-proof electric tracing band according to claim 5, characterized in that: The first insulation layer (3) and the second insulation layer (6) are both made of phenolic resin material.

7. The constant temperature explosion-proof electric tracing band according to claim 6, characterized in that: The shielding layer (7) is made of conductive PVC material.

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