Flexible fire blanket for electric power

Abstract

The utility model relates to a fireproof blanket, concretely relates to a flexible fireproof blanket for electric power, which comprises a high-silica fiber cloth bag with an opening reserved, which is sewn together by a front high-silica fiber cloth layer and a back high-silica fiber cloth layer; the inside of the high-silica fiber cloth bag is filled with a flexible fireproof cloth layer through the opening, and the flexible fireproof cloth layer comprises a ceramic fiber cloth layer, an aramid fiber cloth layer, a Teflon fiber cloth layer and a polyimide fiber cloth layer; the outer surface of the front high-silica fiber cloth layer is provided with a plurality of fireproof ties. The utility model sets the ceramic fiber cloth layer, the aramid fiber cloth layer, the Teflon fiber cloth layer and the polyimide fiber cloth layer in the high-silica fiber cloth bag, so that the fireproof blanket can withstand a high temperature of 1400 DEG C; since no hard metal or hard nonmetal is used as a fireproof or explosion-proof material layer in the fireproof blanket, the electric power cable can be wrapped in a full circumferential flexible manner.

Description

Technical Field

[0001] This utility model relates to fireproof blankets, specifically to a flexible fireproof blanket for power applications. Background Technology

[0002] During power transmission and distribution, power cables inevitably need to be branched and spliced ​​at certain locations to achieve their power transmission and distribution function. Because cables transmit high-voltage, high-energy electricity, arc discharge can easily occur at the splice points due to air ionization. Without protective measures, this can easily lead to electrical accidents that endanger production safety and personal safety.

[0003] Fire blankets are typically made of stainless steel or high-temperature alloy plates sandwiched with fiberglass cloth and ceramic fiber to protect cable splices. However, due to their hardness, they are not suitable for use in confined spaces. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem that existing fire blankets, which are made of stainless steel or high-temperature alloy plates sandwiched with glass fiber cloth and ceramic fiber, are not suitable for confined spaces due to their hard materials. This invention provides a flexible fire blanket for power applications.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A flexible fireproof blanket for power applications includes a high-silica fiber cloth bag sewn together from a front high-silica fiber cloth layer and a back high-silica fiber cloth layer, with a pre-drilled opening.

[0007] The interior of the high-silica fiber bag is filled with a flexible fireproof fabric layer through an opening. The flexible fireproof fabric layer includes a ceramic fiber fabric layer, an aramid fiber fabric layer, a Teflon fiber fabric layer, and a polyimide fiber fabric layer. After filling, the opening is sealed and sewn to form a fireproof blanket.

[0008] Multiple fireproof cable ties are provided on the outer surface of the front high-silica fiber cloth layer.

[0009] Furthermore, one end of the fireproof cable tie is provided with a buckle;

[0010] The fireproof cable tie has a Velcro strap on the side away from the front high-silica fiber cloth layer.

[0011] Furthermore, the fireproof cable ties are made of aramid fiber cloth.

[0012] Furthermore, the flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer and the back high-silica fiber fabric layer: polyimide fiber fabric layer, Teflon fiber fabric layer, aramid fiber fabric layer and ceramic fiber fabric layer.

[0013] Furthermore, the flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer and the back high-silica fiber fabric layer: polyimide fiber fabric layer, Teflon fiber fabric layer, ceramic fiber fabric layer and aramid fiber fabric layer.

[0014] Furthermore, the flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer and the back high-silica fiber fabric layer: polyimide fiber fabric layer, ceramic fiber fabric layer, aramid fiber fabric layer and Teflon fiber fabric layer.

[0015] Furthermore, the flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer and the back high-silica fiber fabric layer: ceramic fiber fabric layer, aramid fiber fabric layer, Teflon fiber fabric layer and polyimide fiber fabric layer.

[0016] Furthermore, the opening is sealed by stitching to form a fireproof blanket.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The flexible fireproof blanket for power applications provided by this utility model, by setting ceramic fiber cloth layers, aramid fiber cloth layers, Teflon fiber cloth layers, and polyimide fiber cloth layers inside a high-silica fiber cloth bag, enables the fireproof blanket to withstand high temperatures of 1400℃, and achieves effective fire protection, explosion protection, corrosion resistance, and high electrical insulation for cables. Since no hard metal or hard non-metal is used as a fireproof or explosion-proof material layer in the fireproof blanket, it can achieve full-circumferential flexible wrapping of cables, which helps to expand the application range of the fireproof blanket. The fireproof cable ties facilitate the fixation of the fireproof blanket after wrapping the cables. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached drawings: 1-High-silica fiber cloth bag, 11-Front high-silica fiber cloth layer, 12-Back high-silica fiber cloth layer, 2-Ceramic fiber cloth layer, 3-Aramid fiber cloth layer, 4-Teflon fiber cloth layer, 5-Polyimide fiber cloth layer, 6-Fireproof cable tie, 7-Ring buckle, 8-Hook and loop fastener. Detailed Implementation

[0022] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] like Figure 1 As shown, a flexible fireproof blanket for power applications includes a high-silica fiber cloth bag 1 sewn together from a front high-silica fiber cloth layer 11 and a back high-silica fiber cloth layer 12, with an opening pre-reserved.

[0024] like Figure 2 As shown, the interior of the high-silica fiber bag 1 is filled with a flexible fireproof fabric layer through an opening. The flexible fireproof fabric layer includes a ceramic fiber fabric layer 2, an aramid fiber fabric layer 3, a Teflon fiber fabric layer 4, and a polyimide fiber fabric layer 5. After filling, the opening is sealed by sewing with a stitching line to form a fireproof blanket.

[0025] In this embodiment, the advantages of the high-silica fiber bag 1 and the flexible fireproof fabric layer are as follows:

[0026] The front high-silica fiber cloth layer 11 and the back high-silica fiber cloth layer 12 are made of high-silica fiber cloth. High-silica fiber cloth is a heat-resistant and soft inorganic fiber fabric with a SiO2 content of 96%. It has excellent heat resistance, can be used for extended periods at 1000℃, and can withstand instantaneous temperatures up to 1400℃ (for approximately 10 minutes). It only begins to soften at 1700℃, and its products are self-extinguishing after combustion, without spreading flames. It has high strength, is easy to process, and has a wide range of applications; it is resistant to high temperatures, ablation, and provides thermal insulation; its breakdown voltage is 20-50KV / mm.

[0027] Ceramic fiber cloth layer 2 is made by spinning ceramic fibers and organic fibers (such as polyester) into yarn with glass filaments as an inner lining, and then forming it into cloth. The thickness of ceramic fiber cloth layer 2 is generally 1.5-6mm. Continuous use temperature can reach 1000℃, and short-term use temperature can reach 1260℃; it has high strength, thermal shock resistance, high and low temperature resistance, low thermal conductivity, and low heat capacity; it has good resistance to acid and alkali corrosion and resistance to molten metal corrosion such as aluminum and zinc; it is non-toxic, harmless, and has no adverse effects on the environment; the breakdown voltage is 5KV / mm.

[0028] Teflon high-temperature resistant fabric is a fiber cloth made of polytetrafluoroethylene impregnated with high-performance glass fiber. It is a high-performance, multi-purpose composite material product. It exhibits excellent high and low temperature resistance, with a continuous operating temperature range of -70℃ to 260℃; it is dimensionally stable, has high strength, and an elongation coefficient of less than 5‰; it has a low coefficient of friction, good anti-stick properties, and is easy to clean from various oil stains, dirt, or other deposits; it has good corrosion resistance, resisting various strong acids and alkalis, is non-flammable, and resistant to aging; it is antistatic, has good insulation, and a breakdown voltage of 26KV / mm.

[0029] Polyimide fiber cloth layer 5 refers to a class of polymers containing imide rings in the main chain, and is one of the organic polymer materials with excellent comprehensive performance. It is resistant to high and low temperatures, with a long-term operating temperature range of -200℃ to 300℃, and a maximum operating temperature of 400℃; it has excellent radiation resistance, and its film retains 90% of its initial strength after irradiation with 5×10⁹ rad fast electrons; the product is self-extinguishing, does not propagate, and has a low smoke rate; it is non-toxic, hydrolysis-resistant, and safe and reliable; it has excellent mechanical properties, with tensile strengths ranging from 100MPa to 400MPa; and it has high insulation performance, with a breakdown voltage of 100-300KV / mm.

[0030] Aramid fiber cloth layer 3, also known as Kevlar fiber cloth, is a high-performance fabric that is soft, strong, heat-resistant, and provides insulation. It is resistant to both high and low temperatures, with a long-term operating temperature range of -196℃ to 205℃, and a maximum operating temperature of 600℃. It exhibits excellent radiation resistance; its strength remains unchanged even after prolonged irradiation with 1.72 × 10⁸ rads of gamma rays. The product is self-extinguishing, does not spread flame, and does not drip or melt. It boasts ultra-high strength and high modulus; it is heat-resistant, acid and alkali resistant, and lightweight; and it has high insulation performance, with a breakdown voltage of 30-50 KV / mm.

[0031] Each layer was placed into the high-silica fiber bag 1 in the designed laying sequence and then sealed and sewn to ensure the stability of each layer structure.

[0032] The flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer 11 and the back high-silica fiber fabric layer 12: polyimide fiber fabric layer 5, Teflon fiber fabric layer 4, aramid fiber fabric layer 3 and ceramic fiber fabric layer 2.

[0033] like Figure 1 As shown, in order to enable the fire blanket to be quickly tightened and loosened on the cable surface, two fireproof cable ties 6 made of aramid fiber cloth are sewn onto the outer surface of the front high-silica fiber cloth layer 11. One end of the fireproof cable tie 6 is sewn with a buckle 7; Velcro 8 is sewn onto the side of the fireproof cable tie 6 away from the front high-silica fiber cloth layer 11.

[0034] When in use, place the high-silica fiber cloth layer 12 on the back of the fire blanket close to the cable, and wrap the fire blanket around the cable. Pass one end of the fireproof cable tie 6 through the buckle 7 and tighten it. After tightening, fix the fireproof cable tie 6 with the Velcro 8 on the fireproof cable tie 6 to fix the fireproof cable tie 6 to the cable.

[0035] In the embodiments of this utility model, corrosion-resistant, flame-retardant, and high-temperature resistant sutures are used for sewing, such as glass fiber sutures, basalt fiber sutures, ceramic fiber sutures, or aramid-glass fiber composite sutures.

[0036] In other embodiments of this utility model, the buckle 7 can be disposed on the front high silica fiber cloth layer 11 located in the length direction of the fireproof cable tie 6.

[0037] In order to make the fire blanket suitable for other applications, the flexible fireproof fabric layer can also be laid in the following order between the front high-silica fiber fabric layer 11 and the back high-silica fiber fabric layer 12: polyimide fiber fabric layer 5, Teflon fiber fabric layer 4, ceramic fiber fabric layer 2 and aramid fiber fabric layer 3.

[0038] Alternatively, polyimide fiber cloth layer 5, ceramic fiber cloth layer 2, aramid fiber cloth layer 3 and Teflon fiber cloth layer 4;

[0039] Alternatively, ceramic fiber cloth layer 2, aramid fiber cloth layer 3, Teflon fiber cloth layer 4, and polyimide fiber cloth layer 5;

[0040] Or a laying sequence suitable for specific needs.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A flexible fireproof blanket for power applications, characterized in that: It includes a high-silica fiber cloth bag (1) made of a front high-silica fiber cloth layer (11) and a back high-silica fiber cloth layer (12) sewn together, with an opening reserved; The interior of the high-silica fiber bag (1) is filled with a flexible fireproof cloth layer through an opening. The flexible fireproof cloth layer includes a ceramic fiber cloth layer (2), an aramid fiber cloth layer (3), a Teflon fiber cloth layer (4), and a polyimide fiber cloth layer (5). Multiple fireproof cable ties (6) are provided on the outer surface of the front high silica fiber cloth layer (11).

2. The flexible fireproof blanket for power applications according to claim 1, characterized in that: One end of the fireproof cable tie (6) is provided with a buckle (7); The fireproof cable tie (6) has a Velcro strap (8) on the side away from the front high-silica fiber cloth layer (11).

3. The flexible fireproof blanket for power applications according to claim 2, characterized in that: The fireproof cable ties (6) are made of aramid fiber cloth.

4. The flexible fireproof blanket for power applications according to claim 1, characterized in that: The flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer (11) and the back high-silica fiber fabric layer (12): polyimide fiber fabric layer (5), Teflon fiber fabric layer (4), aramid fiber fabric layer (3) and ceramic fiber fabric layer (2).

5. The flexible fireproof blanket for power applications according to claim 1, characterized in that: The flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer (11) and the back high-silica fiber fabric layer (12): polyimide fiber fabric layer (5), Teflon fiber fabric layer (4), ceramic fiber fabric layer (2) and aramid fiber fabric layer (3).

6. The flexible fireproof blanket for power applications according to claim 1, characterized in that: The flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer (11) and the back high-silica fiber fabric layer (12): polyimide fiber fabric layer (5), ceramic fiber fabric layer (2), aramid fiber fabric layer (3) and Teflon fiber fabric layer (4).

7. The flexible fireproof blanket for power applications according to claim 1, characterized in that: The flexible fireproof fabric layer is laid in the following order between the front high-silica fiber fabric layer (11) and the back high-silica fiber fabric layer (12): ceramic fiber fabric layer (2), aramid fiber fabric layer (3), Teflon fiber fabric layer (4) and polyimide fiber fabric layer (5).

8. The flexible fireproof blanket for power applications according to claim 1, characterized in that: The opening is sealed by stitching to form a fireproof blanket.

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