Special armored heating cable for instrument high-temperature pipeline

Abstract

The utility model discloses a special armored heating cable for an instrument high-temperature pipeline, which comprises a conductor, a metal braided shielding layer sleeved on the outer side of the conductor, a heat insulation filling material and a heat conduction filling material which are respectively arranged at the upper part and the lower part in a cavity between the conductor and the metal braided shielding layer, an armored layer sleeved on the outer side of the metal braided shielding layer, and an insulating layer sleeved on the outer side of the armored layer. The outer side, corresponding to the heat insulation filling material, of the armor layer is provided with an indication sticker. According to the utility model, the whole armored heating cable is flat, one side, far away from the indicating paste, of the cable is wound on the pipeline needing to be heated, the flat heating cable effectively increases the heat conduction area with the pipeline, and meanwhile, when the conductor is electrified to heat, the heat of the conductor is conducted to one side far away from the indicating paste through the heat insulation filler and the heat conduction filler; the heat dissipation of the heating cable to the outside is reduced, and most of the heat can be conducted to the pipeline, so that the heat conduction efficiency of the heating cable can be effectively improved, and waste of heat energy is avoided.

Description

Technical Field

[0001] This utility model relates to the field of armored heating cable technology, specifically to armored heating cables for high-temperature pipelines in instruments. Background Technology

[0002] To ensure the accuracy of signal transmission of instruments in low-temperature environments, their pipelines need to operate under certain high-temperature conditions, which requires the use of armored heating cables to heat the pipelines.

[0003] Current armored heating cables, such as the MI armored heating cable for high-temperature pipelines of instruments proposed in publication number CN205902115U, include two parallel conductors. The conductors are wrapped with a stainless steel sheath, and a mineral insulating filler is placed between the conductors and the stainless steel sheath. A metal braided shielding layer is placed between the stainless steel sheath and the mineral filler. The conductors have a semi-circular strip structure, and the two conductors are arranged parallel to each other in a plane. This invention features a metal braided shielding layer, which prevents electromagnetic interference to external pipelines during operation, ensuring accurate signal transmission. The semi-circular strip structure of the conductors better matches the cable shape, and the distance between the cable's outer surface and the conductor is approximately equal, resulting in more uniform heating.

[0004] While existing armored heating cables provide more uniform heating, their cylindrical shape results in a small contact area with the pipeline, leading to low thermal conductivity. Furthermore, the uniform heat distribution of the cables causes significant heat loss to the air, resulting in substantial waste and inconvenience. Therefore, we propose a dedicated armored heating cable for high-temperature pipelines in instruments to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a special armored heating cable for high-temperature pipelines of instruments, so as to solve the problems currently found in the market as mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special armored heating cable for high-temperature pipelines in instruments, comprising a conductor, a metal braided shielding layer on the outside of the conductor, and heat-insulating and heat-conducting fillers respectively disposed above and below the cavity between the conductor and the metal braided shielding layer.

[0007] The outer side of the metal braided shielding layer is covered with an armor layer, and an indicator sticker is installed on the outer side of the armor layer corresponding to the heat insulation filler.

[0008] Preferably, the conductor is a cylinder, and multiple conductors are provided, with the spacing between the conductors being the same as their outer diameter.

[0009] Preferably, the insulating filler is made of aerogel material.

[0010] Preferably, the thermally conductive filler is made of magnesium oxide.

[0011] Preferably, the indicator sticker is fixedly installed on the outside of the armor layer by adhesive bonding.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model features an armored heating cable that is flat overall. The side of the cable away from the indicator sticker is wound around the pipeline that needs to be heated. The flat heating cable effectively increases the heat conduction area with the pipeline. At the same time, when the conductor is energized and heating up, the heat of the conductor is conducted to the side away from the indicator sticker through the heat insulation filler and the heat conduction filler, reducing the heat dissipation of the heating cable to the outside and allowing most of the heat to be conducted to the pipeline. This effectively improves the heat conduction efficiency of the heating cable and avoids the waste of heat energy.

[0014] In this invention, an indicator sticker is placed on the outer side of the armor layer near the heat insulation filler. The indicator sticker allows workers to clearly understand the heating surface and the heat insulation surface of the heating cable when laying it out, avoiding the workers from misdistinguishing between the heating surface and the heat insulation surface, thus facilitating the workers to lay out the heating cable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Conductor; 2. Metal braided shielding layer; 3. Thermal insulation filler; 4. Thermally conductive filler; 5. Armoring layer; 6. Indicator sticker. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3This utility model provides a technical solution: a special armored heating cable for high-temperature pipelines of instruments, including a conductor 1, a metal braided shielding layer 2 on the outside of the conductor 1, and heat-insulating filler 3 and heat-conducting filler 4 respectively arranged in the upper and lower parts of the cavity between the conductor 1 and the metal braided shielding layer 2.

[0021] The outer side of the metal braided shielding layer 2 is covered with an armor layer 5, and an indicator sticker 6 is installed on the outer side of the armor layer 5 corresponding to the heat insulation filler 3.

[0022] The armored heating cable is flat in shape. The side of the cable away from the indicator sticker 6 is wrapped around the pipeline that needs to be heated. The flat heating cable effectively increases the heat conduction area with the pipeline. At the same time, when the conductor 1 is energized and heated, the heat of the conductor 1 is conducted to the side away from the indicator sticker 6 through the heat insulation filler 3 and the heat conduction filler 4, which reduces the heat dissipation of the heating cable to the outside and allows most of the heat to be conducted to the pipeline. This effectively improves the heat conduction efficiency of the heating cable and avoids the waste of heat energy.

[0023] Please see Figures 1 to 3 Conductor 1 is a cylinder, and there are multiple conductors 1. The spacing between conductors 1 is the same as its outer diameter. The heat insulation filler 3 is made of aerogel material.

[0024] Please see Figures 1 to 3 The thermally conductive filler 4 is made of magnesium oxide. The indicator sticker 6 is fixedly installed on the outside of the armor layer 5 by adhesive bonding. The indicator sticker 6 is set on the outside of the armor layer 5 near the thermal insulation filler 3. The indicator sticker 6 allows the staff to clearly understand the heating surface and the thermal insulation surface of the heating cable when laying the heating cable, avoiding the staff from distinguishing the heating surface and the thermal insulation surface by mistake, so as to facilitate the staff to lay the heating cable.

[0025] Working Principle: This instrument uses a special armored heating cable for high-temperature pipelines. The armored heating cable is flat, with the side of the cable away from the indicator sticker 6 wound around the pipeline to be heated. The flatness of the heating cable effectively increases the heat conduction area with the pipeline. Simultaneously, when conductor 1 heats up, the heat from conductor 1 is conducted away from the indicator sticker 6 through the heat insulation filler 3 and the heat-conducting filler 4, reducing heat dissipation from the heating cable and ensuring that most of the heat is conducted to the pipeline. This effectively improves the heat conduction efficiency of the heating cable and avoids heat waste. The indicator sticker 6 is located on the outer side of the armor layer 5 near the heat insulation filler 3. This indicator sticker 6 allows operators to clearly identify the heating surface and the insulation surface of the heating cable during installation, preventing misidentification and facilitating proper cable placement.

[0026] 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. Instrumentation high temperature pipe special armored heating cable, comprising conductor (1), metal braided shielding layer (2), heat insulation filler (3), heat conduction filler (4), armored layer (5), indication sticker (6), characterized in that: The conductor (1) is sleeved with a metal woven shielding layer (2), and the cavity between the conductor (1) and the metal woven shielding layer (2) is internally provided with heat insulation filling (3) and heat conduction filling (4) respectively from top to bottom, wherein, The outer side of the metal woven shielding layer (2) is sleeved with an armor layer (5), and the armor layer (5) is provided with an indication sticker (6) corresponding to the outer side of the heat insulation filling (3).

2. The instrumentation high temperature pipe line special purpose sheathed heating cable according to claim 1 characterised in that: The conductor (1) is a cylinder, and a plurality of conductors (1) are provided, and the spacing between the conductors (1) is the same as the outer diameter of the conductors (1).

3. The instrumentation high temperature pipe line special purpose sheathed heating cable according to claim 1 characterized in that: The heat insulation filling (3) is made of aerogel material.

4. The instrumentation high temperature pipe line special purpose sheathed heating cable of claim 1 wherein: The heat conduction filling (4) is made of magnesium oxide material.

5. The instrumentation high temperature pipe line special purpose sheathed heating cable in accordance with claim 1 characterised in that: The indication sticker (6) is fixedly installed on the outer side of the armor layer (5) by gluing.

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