Conductive discharge type multi-layer electric shock three-proofing clothes and manufacturing method thereof

Abstract

The invention relates to a conductive discharge type multi-layer electric shock three-proofing garment, and belongs to the technical field of electric power overhaul protective garments. Comprising an external metal layer and an internal thermal insulation layer; the outer metal layer adopts a'double-layer copper wire gauze 'as a fabric and adopts a'copper woven belt' as a conductive main loop; the inner heat insulation layer is of a multi-layer composite structure and sequentially comprises a reflective heat insulation layer, an aerogel heat insulation layer, a basic heat insulation and buffer layer and a lining comfortable layer from the side close to the outer metal layer to the side close to the human body. A conductive and discharge mode is used, electric shock current is directly led to the ground when an electric shock occurs, a multi-layer structure is adopted, an external metal layer and an internal heat insulation layer are independent of each other, the damage of electric shock, electric arc and fire disaster can be prevented at the same time, and the problems that the error-tolerant rate is extremely low, and traditional insulation protective clothing is single in core function and concentrated on electrical insulation are solved.

Description

Technical Field

[0001] This invention relates to a conductive current-dissipating multilayer electric shock protective suit, belonging to the technical field of power maintenance protective clothing. Background Technology

[0002] In the power industry, preventing personal injury from electric shock has long been a core concern for safe production. Effectively preventing electric shock injuries could resolve most safety incidents in the power industry.

[0003] Current safety measures for preventing electric shock all employ insulating protective clothing, which involves covering the human body with insulating materials such as rubber and resin to prevent electric shock injuries through "blocking".

[0004] However, the protective clothing of this insulation protection scheme has a "passive blocking" protection logic, which requires the insulation medium to be perfect and impeccable everywhere. Any tiny damage, aging crack, improper wearing, or overvoltage breakdown will form a current path at the point of damage, causing the protection to fail completely instantly, resulting in a high-risk situation of "one-point breakdown, whole-body electric shock", with an extremely low fault tolerance rate. Secondly, traditional insulating protective clothing has a single core function, focusing on electrical insulation. Its protective capability is extremely limited when facing other hazards that may accompany electrical work sites, such as the high temperatures of fires or the instantaneous ultra-high temperature thermal shock caused by arc flashovers. Insulating materials such as rubber and resin are prone to melting, carbonizing, or even burning at high temperatures, losing their insulating properties and their molten material can cause severe secondary burns, exacerbating the injury.

[0005] In summary, the protection method of insulation barrier has a low fault tolerance rate; if one part fails, the whole system will fail. Summary of the Invention

[0006] Based on the problems described in the background, the problem to be solved by the present invention is to provide a conductive and current-dissipating multilayer electric shock protective suit and its manufacturing method. It uses a conductive and current-dissipating method to directly conduct the electric shock current to the ground when an electric shock occurs. It adopts a multilayer structure, with the outer metal layer and the inner heat insulation layer being independent of each other. It can simultaneously protect against the hazards of "electric shock", "electric arc" and "fire", thereby solving the problems mentioned above of extremely low fault tolerance and the single core function of traditional insulating protective suits, which are concentrated on electrical insulation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a conductive current-dissipating multilayer electric shock protective suit, comprising an outer metal layer and an inner heat insulation layer; The outer metal layer uses "double-layer copper wire mesh" as the fabric and "copper braided tape" as the main conductive circuit. The internal insulation layer adopts a "multi-layer composite structure", which consists of a reflective insulation layer, an aerogel insulation layer, a basic insulation and buffer layer, and an inner comfort layer, from the side closest to the outer metal layer to the side closest to the human body.

[0008] Preferably, the "double-layer copper wire mesh" fabric is copper wire mesh cloth with an aperture of 0.061mm, a wire diameter of 0.711mm, a mesh count of 200 or more, and is made of T2 grade pure copper with no plating on the surface.

[0009] Preferably, the conductive main circuit of the "copper braided strip" is a soft copper braided strip with a thickness of 8mm and a width of 80mm. The material is T2 grade pure copper and the surface is silver-plated.

[0010] Preferably, the outer metal layer adopts a "one-piece" structure, using a single piece of fabric and a continuous main circuit, with the top and pants connected as one piece.

[0011] Preferably, the processing and connection between the two layers of fabric of the outer metal layer and between the fabric and the main circuit are made by sewing with silver thread with a diameter of 0.7mm, and the fixing method at the cross intersection of the copper woven bag of the main circuit is by pressing with thin copper sheets.

[0012] Preferably, the reflective heat insulation layer is made of flexible glass fiber cloth with aluminum film on one or both sides, and the thickness is 0.1-0.3mm; The aerogel insulation layer is made of ultra-thin flexible silica aerogel felt with a thickness of 2-5mm. The basic heat insulation and buffer layer is made of flame-retardant high-purity ceramic fiber needled blanket with a thickness of 1-3mm; The inner comfort layer is made of cotton and aramid blended fabric that has undergone permanent flame retardant treatment and has a thickness of 1-3mm.

[0013] Preferably, the internal heat insulation layer, the reflective heat insulation layer, the aerogel heat insulation layer, the basic heat insulation and buffer layer, and the inner lining comfort layer are fixed by quilting with high-temperature resistant flame-retardant thread to form a complete "heat insulation layer composite". The quilting stitches used for fixing must form a uniform grid to prevent the layers of material from shifting during use. The entire insulation composite is manufactured independently of the outer metal layer.

[0014] Preferably, during the assembly of the finished garment, the "heat insulation layer composite" of the inner heat insulation layer is placed inside the outer metal layer, and the outer metal layer and the inner heat insulation layer are detachably connected at key locations such as the collar, cuffs, ankles, and both sides of the torso by flame-retardant Velcro or high-temperature resistant snaps.

[0015] This invention also provides a method for manufacturing a conductive current-dissipating multilayer electric shock protective suit, comprising the following steps: (1) According to the design of the outer metal layer, cut and connect the copper wire mesh and the copper braided strip to form a complete "integrated metal layer shell"; (2) According to the design of the internal insulation layer, the materials of each layer are cut, stacked and quilted to make a “one-piece insulation inner liner”; (3) Carefully insert the “one-piece heat insulation inner liner” into the metal shell and adjust it to fit completely; (4) At the preset collar, cuffs, trouser hems and side waist positions, respectively attach the flame-retardant Velcro (hook / slip) sewn on the inner heat insulation layer to the corresponding Velcro (slip / hook) sewn on or fixed to the outer metal layer by insulating fasteners, or fasten the high-temperature resistant snaps. (5) Check the continuity of all conductive parts of the metal layer (e.g., by resistance measurement), check the integrity of the insulation layer coverage, and check the reliability of all detachable connection points.

[0016] The beneficial effects of this invention are: 1. This invention employs an "active guidance" logic, where the metal layer on the garment surface forms an equipotential Faraday cage-like conductive protective layer. In the event of an electric shock, the current is actively guided to the surface of the metal layer and conducted to the ground through a pre-designed low-resistance path (copper braided main circuit). As long as the electrical continuity of the metal layer is maintained, even if the garment suffers localized physical damage due to scratches or snags, the current will preferentially conduct through the metal network, rather than concentrating at the point of damage to the body. Its protective effectiveness does not depend on the absolute "integrity" of the material, but rather on the "connectivity" of the conductive network, which is easier to achieve in terms of structural design for high reliability. This significantly improves the fault tolerance rate, achieving a leap from "zero tolerance for damage" to "allowing non-critical physical damage."

[0017] 2. The core advantage of this invention lies in its unique multi-layer composite structure. In addition to the core function of preventing electric shock, its specially designed internal heat insulation layer brings crucial additional protective value: fire resistance, high temperature protection, and anti-arc flashover. The internal heat insulation layer can be made of high-temperature resistant and flame-retardant materials to achieve fire resistance and high temperature protection. The rapid conduction and dispersion of some arc current and energy by the external metal layer, as well as the internal reflective heat insulation layer (aluminum film) can reflect a large amount of heat radiation, and can withstand short-term, close-range arc thermal shock, greatly reducing the risk of serious burns to workers caused by electric arc.

[0018] 3. The independent layering and overall composite structure of the outer metal layer and the inner insulation layer of this invention allows for independent disassembly, cleaning (if permitted), inspection, or replacement of either the outer metal layer or the inner insulation layer, facilitating maintenance. Simultaneously, the outer metal layer ensures complete coverage of all areas beneath the inner insulation layer without omission, guaranteeing functional fulfillment. Its connection method does not disrupt the electrical continuity and integrity of the metal layers (especially the main circuit copper braided tape) and does not interfere with conductivity. Furthermore, in non-critical protection areas (such as underarms and back), a micro-ventilation pore array can be created on the insulation layer composite, or a 3D mesh structure with a certain degree of breathability can be used as a partial replacement for the buffer layer to improve the comfort of long-term wear and allow moisture to escape.

[0019] 4. This invention not only fundamentally improves the reliability and fault tolerance of electric shock protection through innovative principles, but also achieves a leap from single "electric shock protection" to comprehensive "electric-thermal composite hazard protection" through its multi-functional integrated structural design. A single garment provides the wearer with triple core protection against electric shock, fire, and arc burns. This significantly enhances the overall performance and safety redundancy of personal protective equipment, reduces the complexity and potential errors of workers needing to change equipment according to different risks, and provides more comprehensive and reliable life protection in emergency situations, possessing extremely high practical application value and economic benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the method flow of the present invention. Detailed Implementation

[0021] The embodiments of the present invention will be further described below with reference to the accompanying drawings: Example 1: The present invention provides a conductive current-dissipating multilayer electric shock protective suit, including an outer metal layer and an inner heat insulation layer; The outer metal layer on the surface of the clothing short-circuits the human body, preventing the electric current from flowing through the body and thus avoiding direct harm. At the same time, considering that a large amount of current flowing through the outer metal layer would generate a significant amount of heat, an internal heat insulation layer is installed inside the outer metal layer to prevent indirect burns caused by the heat generated by the current.

[0022] The outer metal layer uses "double-layer copper wire mesh" as the fabric and "copper braided tape" as the main conductive circuit. The "double-layer copper wire mesh" fabric is a copper wire mesh cloth with an aperture of 0.061mm, a wire diameter of 0.711mm, a mesh count of 200 or more, and is made of T2 grade pure copper with no plating on the surface.

[0023] The conductive main circuit of the "copper braided strip" is a soft copper braided strip with a thickness of 8mm and a width of 80mm. It is made of T2 grade pure copper and has a silver-plated surface.

[0024] To reduce the number of joints on the fabric and main circuit, lower the resistance of the conductive parts of the metal layer, and reduce the possibility of joints heating up and melting during high current flow, leading to conductive failure, the outer metal layer adopts a "one-piece" structure, using a single piece of fabric and a continuous main circuit, making the top and pants one piece.

[0025] The processing and connection between the two layers of fabric of the outer metal layer and between the fabric and the main circuit are made by sewing with silver thread with a diameter of 0.7mm. The copper woven bag of the main circuit is fixed at the cross intersection by pressing with thin copper sheets.

[0026] The main function of the internal insulation layer is to block the high temperature generated by the external metal layer when conducting large currents, so as to prevent burns to the human body. Therefore, this layer must have excellent heat insulation, certain mechanical strength, flexibility, flame retardancy and safety in contact with the skin. The internal insulation layer adopts a "multi-layer composite structure", which consists of a reflective insulation layer, an aerogel insulation layer, a basic insulation and buffer layer and an inner comfort layer, from the side closer to the external metal layer to the side closer to the human body.

[0027] The reflective insulation layer is the outermost layer, which is a flexible glass fiber cloth with a single or double-sided aluminum film coating and a thickness of 0.15mm. Its core function is to reflect the heat radiation generated by the metal layer back through a highly reflective aluminum film, thereby achieving efficient radiative heat insulation, while the fiberglass cloth substrate provides high-temperature resistance and insulation support.

[0028] The aerogel insulation layer is the middle core layer, which is made of ultra-thin flexible silica aerogel felt with a thickness of 4mm; Aerogels have extremely low thermal conductivity and are among the most effective solid insulation materials known, capable of maximally blocking heat conduction. A flexible, felt-like form is chosen to balance excellent insulation performance with the flexibility required for clothing.

[0029] The basic insulation and buffer layer is an intermediate layer, which is made of flame-retardant high-purity ceramic fiber needled blanket with a thickness of 2mm. This layer further enhances the thermal insulation effect and utilizes its porous, soft fiber structure to absorb and disperse some of the impact force, while also serving as a buffer protective layer for the aerogel layer.

[0030] The innermost comfort layer, which is also the layer that comes into contact with the skin, is made of a cotton and aramid blend fabric that has undergone permanent flame retardant treatment, such as Nomex® fiber fabric, and is 2mm thick.

[0031] This layer must be soft, breathable, and moisture-wicking, and ensure that it does not melt or produce toxic fumes even when exposed to high temperatures, providing basic wearing comfort and a final safety barrier. The internal heat insulation layer, including the reflective heat insulation layer, aerogel heat insulation layer, basic heat insulation and buffer layer, and inner comfort lining layer, is fixed by quilting with high-temperature resistant and flame-retardant thread to form a complete "heat insulation layer composite". The quilting stitches during fixation need to form a uniform grid to prevent the materials of each layer from shifting during use. The entire heat insulation layer composite is manufactured independently of the outer metal layer.

[0032] During the assembly of the finished garment, the "heat insulation layer composite" of the inner heat insulation layer is placed inside the outer metal layer. The outer metal layer and the inner heat insulation layer are detachably connected at key locations such as the collar, cuffs, ankles, and both sides of the torso using flame-retardant Velcro or high-temperature resistant snaps.

[0033] This structural design has the following advantages: Easy to maintain: The metal or insulation layer can be independently removed, cleaned (if permitted), inspected, or replaced.

[0034] Protection function: Ensures that the insulation layer completely covers all areas beneath the metal layers without any omissions.

[0035] Non-interference with conductivity: The connection method does not disrupt the electrical continuity and integrity of the metal layers (especially the copper braided strip of the main circuit).

[0036] Ventilation and moisture-wicking design: In non-critical protective areas (such as underarms and back), micro-ventilation arrays can be created on the thermal insulation composite layer, or a 3D three-dimensional mesh structure with a certain degree of breathability can be used as a partial replacement for the cushioning layer to improve the comfort of long-term wear of the garment and wick away moisture.

[0037] like Figure 1 As shown, the present invention also provides a method for manufacturing a conductive current-draining multilayer electric shock protective suit, comprising the following steps: (1) According to the design of the outer metal layer, cut and connect the copper wire mesh and the copper braided strip to form a complete "integrated metal layer shell"; All electrical connections (such as braided strap joints) are made using silver soldering or high-pressure cold pressing to ensure low resistance and high strength.

[0038] (2) According to the design of the internal insulation layer, the materials of each layer are cut, stacked and quilted to make a “one-piece insulation inner liner”; (3) When assembling, use combination assembly. Carefully insert the "one-piece heat insulation inner liner" into the metal shell and adjust it to fit completely. (4) The connection is designed to be detachable. At the preset collar, cuff, trouser hem and side waist positions, flame-retardant Velcro (hook / slip) sewn on the inner heat insulation layer is bonded to the corresponding Velcro (slip / hook) sewn on or fixed to the outer metal layer by insulating fasteners, or high-temperature resistant snaps are fastened. The entire connection ensures a secure bond without causing puncture damage to the metal layer.

[0039] (5) Check the continuity of all conductive parts of the metal layer (e.g., by resistance measurement), check the integrity of the insulation layer coverage, and check the reliability of all detachable connection points.

[0040] If necessary, a very thin layer of flame-retardant and abrasion-resistant fabric can be used to cover the non-critical conductive areas of the outermost (metal layer) for routine physical protection, but it must be ensured that its leakage contact function is not affected.

[0041] The novel active current-dissipating anti-electric shock clothing proposed in this invention, based on the concept of "conduction instead of insulation," is fundamentally different from the current mainstream insulating barrier protective clothing. It effectively solves the fundamental problems of low fault tolerance and high dependence of protective reliability on material integrity in existing technologies.

[0042] First, the invention represents a fundamental innovation in its protection concept, moving from a "low" to a "high" tolerance rate by adopting a "proactive guidance" logic.

[0043] The outer metal layer on the surface of the garment of the present invention constitutes an equipotential Faraday cage-like conductive protective layer. When an electric shock occurs, the current is actively guided to the surface of the outer metal layer and then conducted to the ground through a preset low-resistance path (copper braided main circuit).

[0044] As long as the electrical continuity of the outer metal layer is maintained, even if the clothing suffers localized physical damage due to scratches or snagging, the current will preferentially conduct through the metal network, rather than flowing directly to the body from the point of damage. Its protective effectiveness does not depend on the absolute "integrity" of the material, but rather on the "connectivity" of the conductive network, which is easier to achieve in structural design for high reliability. This significantly improves fault tolerance, achieving a leap from "zero tolerance for damage" to "allowing for non-critical physical damage."

[0045] Secondly, the diversified expansion of the protective functions of this invention achieves the comprehensive benefits of "one garment providing multiple protections".

[0046] The invention's unique multi-layered composite structure generates additional functions and value beyond the core electric shock protection function. Its specially designed internal heat insulation layer also has fireproof, high-temperature protection, and anti-arc flashover functions.

[0047] Fire and High-Temperature Protection: The internal insulation layer uses flexible aerogel, ceramic fiber, and flame-retardant aramid fabric, all of which are recognized high-performance, high-temperature resistant, and flame-retardant materials. Together, they form a stable thermal barrier that effectively blocks the transfer of heat from external flames or high-temperature environments to the human body, providing the wearer with valuable escape or emergency response time and preventing burns.

[0048] Anti-arc flashover: In electrical accidents, close-range electric arcs can generate instantaneous temperatures reaching thousands of degrees Celsius. The protective mechanism of this invention exhibits unique advantages in such events. First, the outer metal layer can rapidly conduct and disperse some of the arc current and energy. More importantly, the internal reflective insulation layer (aluminum-coated film) can reflect a large amount of thermal radiation, while the aerogel and ceramic fiber layers can extremely effectively block and attenuate the intense instantaneous heat conduction. This combined design enables the garment to withstand short-term, close-range arc thermal shock, greatly reducing the risk of severe burns to workers caused by electric arcs.

[0049] Therefore, this product can protect against three hazards simultaneously: electric shock, electric arc, and fire, which is consistent with the name of a three-proof suit.

[0050] This invention not only fundamentally improves the reliability and fault tolerance of electric shock protection through innovative principles, but also achieves a leap from single "electric shock protection" to comprehensive "electric-thermal composite hazard protection" through its multi-functional integrated structural design. A single garment provides the wearer with triple core protection against electric shock, fire, and arc burns. This significantly enhances the overall performance and safety redundancy of personal protective equipment, reduces the complexity and potential errors of workers needing to change equipment according to different risks, and provides more comprehensive and reliable life protection in emergency situations, possessing extremely high practical application value and economic benefits.

Claims

1. An electrically conductive, discharge type, multi-layer, touch-protection, three-protective-attribute clothing, characterized by, It comprises an outer metal layer and an inner thermal insulation layer; The outer metal layer adopts "double-layer copper wire mesh" as the fabric and "copper braided tape" as the conductive main circuit; The inner thermal insulation layer adopts "multi-layer composite structure", from the side close to the outer metal layer to the side close to the human body, it is in turn a reflective insulation layer, an aerogel thermal insulation layer, a basic thermal insulation and buffer layer and an inner lining comfort layer.

2. The multi-layered electrically conductive and discharge type three- proof protective clothing according to claim 1, wherein The "double-layer copper wire mesh" fabric is a copper mesh cloth with a pore size of 0.061 mm, a wire diameter of 0.711 mm, a mesh number of more than 200 meshes, and a T2 grade pure copper material without plating layer on the surface.

3. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein The "copper braided tape" conductive main circuit is a soft copper braided tape with a thickness of 8 mm, a width of 80 mm, and a T2 grade pure copper material with a silver plating surface.

4. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein The outer metal layer as a whole adopts a "one-piece" structure, uses a whole piece of fabric and a through main circuit, and the jacket and trousers are connected as one.

5. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein The processing connection between the double-layer fabric of the outer metal layer and between the fabric and the main circuit adopts silver wire sewing with a diameter of 0.7 mm, and the fixing method at the cross intersection of the copper braided bag of the main circuit adopts thin copper sheet crimping.

6. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein The reflective insulation layer adopts single-sided or double-sided aluminum-coated flexible glass fiber cloth with a thickness of 0.1-0.3 mm; The aerogel thermal insulation layer adopts ultra-thin flexible silica aerogel felt with a thickness of 2-5 mm; The basic thermal insulation and buffer layer adopts a high-purity ceramic fiber needle punching blanket treated with flame retardant, with a thickness of 1-3 mm; The inner lining comfort layer adopts a cotton and aramid blended fabric treated with permanent flame retardant, with a thickness of 1-3 mm.

7. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein The reflective insulation layer, the aerogel thermal insulation layer, the basic thermal insulation and buffer layer, and the inner lining comfort layer of the inner thermal insulation layer are fixed by quilting with high-temperature resistant and flame-retardant thread to form a complete "thermal insulation layer composite"; The quilting stitches during quilting and fixing need to form a uniform grid to prevent displacement of the materials in use; The whole thermal insulation layer composite is independent of the outer metal layer in manufacturing.

8. The multi-layered electrically conductive and dischargeable three-protective clothing according to claim 1, wherein, When the garment is assembled, the "thermal insulation layer composite" of the inner thermal insulation layer is placed inside the outer metal layer, and the outer metal layer and the inner thermal insulation layer are detachably connected at the key positions of the neckline, the cuffs, the ankles, and the sides of the torso through flame-retardant magic tape or high-temperature resistant snaps.

9. A method for manufacturing a multi-layered electrically conductive discharge type three-protective clothing, characterized in that, It comprises the following steps: (1) According to the design of the outer metal layer, cut and connect the copper mesh cloth and the copper braided tape to form a complete "one-piece metal layer shell"; (2) According to the design of the inner thermal insulation layer, cut, stack, and quilt each layer of material to make a "one-piece thermal insulation layer liner"; (3) Carefully put the "one-piece thermal insulation layer liner" into the metal layer shell and adjust it to completely fit; (4) At the predetermined positions of the neckline, the cuffs, the trouser legs, and the sides of the waist, respectively, bond the flame-retardant magic tape (hook surface / loop surface) sewn on the inner thermal insulation layer with the corresponding magic tape (loop surface / hook surface) sewn or fixed on the outer metal layer by insulation fasteners, or buckle the high-temperature resistant snaps; (5) Check the continuity of all conductive parts of the metal layer (such as through resistance measurement), check the completeness of the thermal insulation layer coverage, and check the reliability of all detachable connection points.

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