A tensile high-temperature-resistant series constant-power electric heat tracing band

Abstract

This utility model relates to the field of electric heating tape technology, and in particular to a tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape, comprising an inner sheath and a thickened layer. The inner wall of the inner sheath is fixedly connected to the outer wall of the thickened layer. The outer wall of the inner sheath is connected to a tensile structure, which includes an outer sheath and a wire core. The inner wall of the outer sheath is fixedly connected to the outer wall of the inner sheath. The outer sheath increases the tensile strength in the lateral direction, while the wire core increases the tensile strength in the longitudinal direction. At the same time, the steel wire material of the wire core does not completely wrap the outer sheath, thus ensuring the normal bending of the electric heating tape. The outer wall wrapping layer of the wire core, made of its own silicone rubber material, increases the high-temperature resistance of the outer wall of the electric heating tape, preventing damage to the electric heating tape caused by high temperatures in the external environment, ensuring the laying of the electric heating tape in complex pipes or curved parts, and preventing the outer surface of the electric heating tape from breaking.

Description

Technical Field

[0001] This utility model relates to the field of tensile and high temperature resistant series constant power electric heating tape, specifically a tensile and high temperature resistant series constant power electric heating tape. Background Technology

[0002] Electric heating tape is a device used for heat preservation, frost protection, and heating. Its core function is to convert electrical energy into heat energy to provide continuous heat to pipes, equipment, etc., in order to maintain or increase the temperature of the medium.

[0003] For example, the high-temperature resistant series constant power electric heating tape with authorization announcement number "CN210137463U" addresses the technical problems of poor tensile strength and high-temperature resistance of electric heating tapes. When subjected to external pulling forces or working in high-temperature environments, the outer sheath and internal insulation layer are easily damaged, resulting in a short service life. This utility model aims to improve these issues, offering advantages such as strong tensile strength, strong high-temperature resistance, and long service life. However, in the use of electric heating tapes, although the reinforced sheath (stainless steel / aluminum alloy, thickness 0.3~0.5mm) improves compressive strength and wear resistance, the high hardness of the metal material itself, combined with the internal tensile layer (aramid fiber, ceramic fiber, etc.), reduces the overall flexibility compared to electric heating tapes without sheaths. This affects the laying of electric heating tapes in complex pipelines or curved parts, leading to external breakage of the electric heating tape. Utility Model Content

[0004] The purpose of this invention is to solve the problem of electric heating tape breaking on the outside due to its impact on the laying of complex pipes or curved parts, and to propose a tensile-resistant, high-temperature-resistant series constant power electric heating tape.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape, comprising an inner sheath and a thickened layer. The inner wall of the inner sheath is fixedly connected to the outer wall of the thickened layer. The outer wall of the inner sheath is connected to a tensile structure, which includes an outer sheath and conductors. The inner wall of the outer sheath is fixedly connected to the outer wall of the inner sheath. The outer wall of the outer sheath is attached to the outer walls of multiple conductors. Each conductor has a wrapping layer fixedly connected to its outer wall.

[0007] This design increases the tensile strength of the outer sheath in the lateral direction, while increasing the tensile strength of the wire core in the front-back direction. At the same time, the steel wire material of the wire core does not completely wrap the outer sheath, thus ensuring the normal bending of the electric heating tape.

[0008] Preferably, the inner wall of the wrapping layer is fixedly connected to the outer wall of the outer protective layer.

[0009] Preferably, an insulating layer is fixed to the inner wall of the thickened layer.

[0010] This design features an insulation layer made of polyimide, which can withstand temperatures above 400°C for extended periods while also providing excellent insulation.

[0011] Preferably, the inner wall of the insulating layer is fixedly connected to an inner core.

[0012] Preferably, a straight cylinder is inserted into the outer wall of the inner core.

[0013] This feature allows the straight tube to be fitted over the outer wall of the inner core, protecting it and preventing complete damage.

[0014] Preferably, a horizontal plate is fixed to the outer wall of the straight cylinder.

[0015] This design incorporates two additional straight cylinders on the horizontal plate to provide support and prevent the cylinders from deforming outwards or inwards.

[0016] The present invention proposes a tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating cable with the following advantages: In the tensile-resistant structure, the outer sheath of the inner sheath is wrapped with its own aramid fiber material. During this process, multiple wire cores on the outer sheath pass through the material of their own steel wires. At this time, the outer sheath increases the tensile strength in the lateral direction, while the wire cores increase the tensile strength in the longitudinal direction. Simultaneously, the steel wire material of the wire cores does not completely wrap the outer sheath, thus ensuring the normal bending of the electric heating cable. The outer wall wrapping layer of the wire cores, made of its own silicone rubber material, increases the high-temperature resistance of the outer wall of the electric heating cable, preventing damage from high external environmental temperatures, ensuring the electric heating cable can be laid in complex pipes or curved sections, and preventing external breakage of the electric heating cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram showing the connection relationship between the inner protective layer, the outer protective layer, and the thickened layer;

[0019] Figure 3 for Figure 1 Schematic diagram of structure A in the middle;

[0020] Figure 4 for Figure 1 A schematic diagram of the connection relationship between the straight cylinder and the horizontal plate.

[0021] In the diagram: 1. Inner sheath, 2. Tensile structure, 201. Outer sheath, 202. Wire core, 203. Wrapping layer, 3. Thickened layer, 4. Insulation layer, 5. Inner core, 6. Straight tube, 7. Horizontal plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Please see Figure 1-4 In this embodiment, a tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape includes an inner sheath 1 and a thickened layer 3. Both the inner sheath 1 and the thickened layer 3 are made of polytetrafluoroethylene (PTFE). The inner wall of the inner sheath 1 is fixedly connected to the outer wall of the thickened layer 3. The outer wall of the inner sheath 1 is connected to a tensile structure 2. The tensile structure 2 includes an outer sheath 201 and wire cores 202. The inner wall of the outer sheath 201 is fixedly connected to the outer wall of the inner sheath 1. The outer sheath 201 is made of aramid fiber. The outer wall of the outer sheath 201 is attached to the outer walls of multiple wire cores 202. The wire cores 202 are made of steel wire. The outer walls of multiple wire cores 202 are all fixedly connected to a wrapping layer 203. The wrapping layer 303 is made of silicone rubber.

[0024] The outer sheath 201 of the inner sheath 1 in the tensile structure 2 is wrapped with its own aramid fiber material. When the outer sheath 201 is wrapped with its own steel wire material, the outer sheath 201 increases the tensile strength in the left and right directions, while the wire cores 202 increase the tensile strength in the front and back directions. At the same time, the steel wire material of the wire cores 202 does not completely wrap the outer sheath 201, thus ensuring the normal bending of the electric heating tape. The outer sheath wrapping layer 203 of the wire cores 202 is made of its own silicone rubber material, which increases the high temperature resistance of the outer wall of the electric heating tape, avoids damage to the electric heating tape caused by high temperature in the external environment, ensures the laying of the electric heating tape in complex pipes or bending parts, and prevents the outer part of the electric heating tape from breaking.

[0025] The inner wall of the wrapping layer 203 is fixed to the outer wall of the outer protective layer 201. The inner wall of the thickened layer 3 is fixed to an insulating layer 4, which is made of polyimide. The inner wall of the insulating layer 4 is fixed to an inner core 5, which is made of copper. A straight cylinder 6 is inserted into the outer wall of the inner core 5. A horizontal plate 7 is fixed to the outer wall of the straight cylinder 6.

[0026] Working principle:

[0027] Electric heating tape usage:

[0028] Constant power electric heating tapes are divided into series and parallel types. Two parallel inner cores 5, with no connecting branches on the outer wall of the inner core 5, form a direct circuit after the inner core 5 is plugged into the power supply. This type is a series constant power electric heating tape, where the current passes through the resistance wire and heats up throughout, with constant power.

[0029] The insulation layer 4, made of polyimide, is resistant to temperatures above 400°C for extended periods and possesses excellent insulation properties. It is directly wrapped around the outer wall of the inner core 5 to prevent insulation failure due to high temperatures. The thickened layer 3 on the outer wall of the insulation layer 4 and the inner sheath 1, made of polytetrafluoroethylene, increase the thickness of the high-temperature resistant layer. The outer sheath 201, made of aramid fiber, wraps around the outer wall of the inner sheath 1. As the outer sheath 201 passes through, multiple wire cores 202 pass through its own steel wire material. At this time, the outer sheath 201 increases the tensile strength in the lateral direction, while the wire cores 202 increase the tensile strength in the longitudinal direction. Meanwhile, the steel wire material of the wire cores 202 does not completely wrap the outer sheath 201, thus ensuring the normal bending of the electric heating tape. The outer wall wrapping layer 203 of the wire cores 202, made of silicone rubber, increases the high-temperature resistance of the outer wall of the electric heating tape, preventing damage to the electric heating tape caused by high temperatures in the external environment.

[0030] The electric heating tape is wrapped around the outer wall of the pipe. Then, the straight cylinder 6 at the end of the outer wall of the inner core 5 is pulled outward to separate the straight cylinder 6 from the inner core 5. Then, the wire core is wrapped around the outer wall of the inner core 5 to complete the electrical connection. The wire transmits the current to the inner core 5 (the inner core is made of copper). At this time, a resistance is formed to generate heat. The heat is transferred to the pipe through the electric heating tape to prevent the pipe from freezing.

[0031] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape, comprising an inner sheath (1) and a thickened layer (3), characterized in that: The inner wall of the inner protective layer (1) is fixedly connected to the outer wall of the thickened layer (3), and the outer wall of the inner protective layer (1) is connected to a tensile structure (2). The tensile structure (2) includes an outer sheath (201) and a core (202). The inner wall of the outer sheath (201) is fixed to the outer wall of the inner sheath (1). The outer wall of the outer sheath (201) is attached to the outer walls of multiple cores (202). The outer walls of the multiple cores (202) are all fixed with a wrapping layer (203).

2. The tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape according to claim 1, characterized in that: The inner wall of the wrapping layer (203) is fixedly connected to the outer wall of the outer protective layer (201).

3. The tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape according to claim 1, characterized in that: An insulating layer (4) is fixed to the inner wall of the thickened layer (3).

4. The tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape according to claim 3, characterized in that: The inner wall of the insulating layer (4) is fixed with an inner core (5).

5. The tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape according to claim 4, characterized in that: A straight cylinder (6) is inserted into the outer wall of the inner core (5).

6. The tensile-resistant, high-temperature-resistant, series-connected constant-power electric heating tape according to claim 5, characterized in that: A horizontal plate (7) is fixed to the outer wall of the straight cylinder (6).

Images