A fire-resistant shielding tape structure

Abstract

This utility model belongs to the field of cable protection technology and discloses a fire-resistant shielding tape structure. The tape structure includes a fire-resistant outer layer, a shielding middle layer, and an elastic inner layer stacked sequentially from the outside to the inside. The fire-resistant outer layer is made of flexible ceramic fiber cloth or pre-oxidized fiber cloth, the shielding middle layer is made of metal wire braided mesh, and the elastic inner layer is made of elastic and memory-resistant high-temperature resistant ceramic fiber felt or silicone rubber foam layer. The outer surface of the fire-resistant outer layer is coated with a high-temperature indicating coating layer. The metal wire braided mesh of the shielding middle layer is woven from stainless steel wire, Inconel nickel alloy wire, or Monel alloy wire. The elastic inner layer has a wavy protrusion structure inside. This utility model integrates fire-resistant heat insulation, electromagnetic shielding, and elastic buffer protection functions into the tape structure, which can completely solve the problem of insufficient protection capability of traditional single-function tapes in extreme and complex environments, and at the same time provide comprehensive, reliable, and durable integrated protection for critical cables and pipelines.

Description

Technical Field

[0001] This utility model relates to the field of cable protection technology, and in particular to a fire-resistant shielding tape structure. Background Technology

[0002] In fields such as aerospace, nuclear power, petrochemicals, and high-rise buildings, a large number of cables and pipelines need to operate in extreme environments, which may be accompanied by high temperatures, open flames, and strong electromagnetic interference.

[0003] Traditional protective straps are mostly made of single-function materials, such as: 1) Ordinary shielding straps: usually made of metal foil (such as copper foil, aluminum foil) composite plastic film, which has good electromagnetic shielding performance, but under high temperature or open flame, the plastic substrate will melt and carbonize rapidly, causing the shielding layer to fail or even fall off, losing its protective function.

[0004] 2) Ordinary fire-resistant wrapping tape: It is usually made of inorganic non-combustible materials such as fiberglass cloth and mica tape. It has a certain fire resistance and heat insulation ability, but it lacks effective electromagnetic shielding function and cannot protect internal cables from external electromagnetic interference. Therefore, we propose a fire-resistant shielding wrapping tape structure. Utility Model Content

[0005] To address the technical problems existing in the current protective straps described above, this utility model provides the following technical solution:

[0006] A fire-resistant shielding wrapping structure, the wrapping structure comprising a fire-resistant outer layer, a shielding middle layer and an elastic inner layer stacked sequentially from the outside to the inside;

[0007] The fire-resistant outer layer is a flexible ceramic fiber cloth or a pre-oxidized fiber cloth, the shielding middle layer is a metal wire woven mesh, and the elastic inner layer is a high-temperature resistant ceramic fiber felt or a silicone rubber foam layer with elasticity and memory.

[0008] As a technical solution of the fire-resistant shielding tape structure of this utility model, the outer surface of the fire-resistant outer layer is coated with a high-temperature temperature-indicating coating layer.

[0009] As a technical solution of the fire-resistant shielding tape structure described in this utility model, the metal wire mesh of the shielding middle layer is woven from stainless steel wire, Inconel nickel alloy wire or Monel alloy wire.

[0010] As a technical solution of the fire-resistant shielding tape structure of this utility model, the inner surface of the elastic inner layer is provided with a wave-shaped protrusion structure parallel to the cable axis.

[0011] As a technical solution of the fire-resistant shielding tape structure of this utility model, the tape structure is provided with multiple easy-tear lines at equal intervals along its length.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. This utility model integrates fire-resistant heat insulation, electromagnetic shielding and elastic buffer protection functions into the wrapping tape structure, which can completely solve the problem of insufficient protection capability of traditional single-function wrapping tape in extreme and complex environments, and at the same time provide comprehensive, reliable and durable integrated protection for critical cables and pipelines.

[0014] 2. This utility model, through the synergy of a high-temperature temperature-indicating coating layer and an easy-tear line, can not only significantly improve the product's intelligence and user-friendliness, but also jointly enhance the product's practical value and user experience in actual applications.

[0015] 3. This utility model, by setting a high-temperature temperature-indicating coating layer, not only provides the ability to quickly locate damage after a fire or overheating, but also greatly improves maintenance efficiency and safety.

[0016] 4. This utility model, by setting an easy-tear line, can not only greatly simplify the installation process, but also improve construction efficiency and convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 3 This is a bottom view of the structure of this utility model.

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0022] Explanation of reference numerals in the attached figures:

[0023] In the diagram: 1. Wrapping structure; 101. Fire-resistant outer layer; 1011. High-temperature temperature-indicating coating layer; 102. Shielding intermediate layer; 103. Elastic inner layer; 1031. Wavy raised structure; 2. Easy-tear line. Detailed Implementation

[0024] 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.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0027] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] Reference Figures 1-4 A fire-resistant shielding wrapping structure is provided, which includes a fire-resistant outer layer 101, a shielding middle layer 102 and an elastic inner layer 103 stacked sequentially from the outside to the inside. The fire-resistant outer layer 101, the shielding middle layer 102 and the elastic inner layer 103 are stacked in sequence and compounded by a hot press at 180-220℃ and 0.5-1MPa pressure to ensure that there are no air bubbles between the layers.

[0029] The fire-resistant outer layer 101 is made of flexible ceramic fiber cloth or pre-oxidized fiber cloth. This provides excellent fire resistance, heat insulation, and flame retardant properties, enabling it to maintain structural integrity for extended periods in high-temperature or open-flame environments, protecting internal cables from ablation. The shielding middle layer 102 is made of woven metal wire mesh, providing effective electromagnetic shielding (EMI / RFI) to protect internal cables from external electromagnetic interference. It also prevents internal signals from interfering with external equipment. Furthermore, the metal mesh structure is more resistant to bending and mechanical damage than foil. The elastic inner layer... 103 is a high-temperature resistant ceramic fiber felt or silicone rubber foam layer with elasticity and memory properties. The elastic inner layer 103 uses a high-temperature resistant ceramic fiber felt or silicone rubber foam layer, which gives the tape good elasticity and memory properties. This allows the tape to wrap tightly and snugly around cables or pipes of different diameters, providing cushioning and shock absorption, adapting to thermal expansion and contraction, and ensuring good contact with the cable surface. It also helps with heat dissipation and fixation. In applications, by integrating fire resistance, electromagnetic shielding and elastic cushioning functions, the tape's comprehensive protective performance and service life under extreme and complex environments (high temperature, open flame, electromagnetic interference, mechanical vibration) are significantly improved.

[0030] Reference Figure 1 and Figure 2 The outer surface of the fire-resistant outer layer 101 is coated with a high-temperature indicator coating layer 1011. For example, a flexible ceramic fiber cloth (temperature resistance ≥1200℃) or pre-oxidized fiber cloth (temperature resistance ≥600℃) with a thickness of 0.2-0.5mm is selected. The surface is coated with a high-temperature resistant silicone adhesive, which forms a color-changing layer after drying. In application, the high-temperature indicator coating layer 1011 is designed to undergo obvious color changes when a specific high-temperature threshold is reached (e.g., red → black at 400℃). This allows maintenance personnel to intuitively and quickly identify which areas of the cable wrapping have experienced excessively high temperatures after a fire or high-temperature event, thereby accurately locating potential cable damage points or high-temperature hot spots, greatly improving maintenance efficiency and safety.

[0031] Reference Figure 1 and Figure 2 The metal wire mesh of the shielding middle layer 102 is woven from stainless steel wire, Inconel nickel alloy wire, or Monel alloy wire. For example, stainless steel wire (or nickel-based alloy wire) with a diameter of 0.05-0.1mm is used to weave a metal mesh with a mesh density of 60-80 meshes and a thickness of 0.1-0.3mm. The surface is plasma cleaned to improve the bonding strength with the upper and lower layers. In application, the alloy material design (especially Inconel nickel and Monel) has excellent high temperature resistance, oxidation resistance, and corrosion resistance. In high temperature environments, it can maintain the conductivity and structural stability of the metal mesh, ensuring that the electromagnetic shielding effectiveness will not be significantly reduced or fail due to high temperature, thus providing long-lasting and reliable shielding protection.

[0032] Reference Figure 3 and Figure 4 The inner surface of the elastic inner layer 103 is provided with a wavy protrusion structure 1031 parallel to the cable axis, such as high-temperature resistant ceramic fiber felt (thickness 1-2mm) or silicone rubber foam layer (density 0.3-0.5g / cm³). 3 The axial wave-shaped protrusion structure 1031 (wave crest spacing 3-5mm, height 1-2mm) is formed by hot pressing with a mold. In application, the design of the wave-shaped protrusion structure 1031 can significantly increase the contact area and friction between the elastic inner layer 103 and the outer surface of the cable / pipe, effectively preventing the tape from sliding and shifting circumferentially or axially after installation or during use. At the same time, it can provide better elastic deformation space when compressed, further enhancing the tape's adaptive wrapping ability and cushioning and shock absorption effect on the cable. In addition, the grooves between the protrusions help to facilitate the flow of a small amount of air or heat.

[0033] Reference Figures 1-4 The wrapping tape structure 1 has multiple easy-tear lines 2 evenly spaced along its length. For example, every 50cm along the length of the laminated wrapping tape, easy-tear lines 2 with a depth of 60% of the total thickness are processed by laser etching to avoid damaging the continuity of the shielding intermediate layer 102. In application, the design of the easy-tear lines 2 allows the wrapping tape structure 1 to be easily, quickly, and neatly torn by hand according to the cable length or site requirements during installation, without the need for tools such as scissors. This not only improves installation efficiency and convenience but also avoids damage to the wrapping tape or cable caused by improper use of tools. At the same time, the evenly spaced design ensures the uniformity of the length of each segment of the wrapping tape after tearing.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A refractory shielded tape wrap structure comprising a tape wrap structure (1), characterised in that: The wrapping structure (1) includes a fire-resistant outer layer (101), a shielding middle layer (102), and an elastic inner layer (103) stacked sequentially from the outside to the inside; The fire-resistant outer layer (101) is a flexible ceramic fiber cloth or a pre-oxidized fiber cloth, the shielding middle layer (102) is a metal wire woven mesh, and the elastic inner layer (103) is a high-temperature resistant ceramic fiber felt or a silicone rubber foam layer with elasticity and memory.

2. The refractory shielded tape wrap structure of claim 1, wherein: The outer surface of the refractory outer layer (101) is coated with a high-temperature temperature-indicating coating layer (1011).

3. The refractory shielded wrap structure of claim 1, wherein: The metal wire mesh of the shielding intermediate layer (102) is woven from stainless steel wire, Inconel alloy wire or Monel alloy wire.

4. The refractory shielded wrap structure of claim 1, wherein: The inner surface of the elastic inner layer (103) is provided with a wave-shaped protrusion structure (1031) parallel to the cable axis.

5. The refractory shielded tape wrap structure of any of claims 1-4, wherein: The strap structure (1) has multiple tear-resistant lines (2) evenly spaced along its length.

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