Special low-smoke flame-retardant electrical pipe for fire protection

Abstract

The utility model discloses a special low-smoke flame-retardant fire-fighting electrical pipe, which belongs to the technical field of electrical pipes, and is characterized by comprising a pipe body, the pipe body comprises a base layer, an inner layer is arranged in the base layer, a middle layer is arranged on the surface of the base layer, and an outer layer is arranged on the surface of the middle layer; the two sides of the pipe body are both sleeved with sealing connecting sleeves, and fastening rings are embedded in the two sides of the surfaces of the sealing connecting sleeves, a novel flame-retardant composite material is adopted as a base layer, the low-smoke halogen-free flame-retardant property is excellent, smoke and toxic gas are greatly reduced in the case of a fire, and the breathing safety of personnel and the visible evacuation condition are guaranteed; the structural design of the pipe body is optimized, the mechanical strength and the heat-resistant stability are enhanced, the pipe body can be kept complete under the high temperature of a fire disaster, the cable is continuously protected, the material is high in corrosion resistance, suitable for a complex building environment, moderate in weight and easy to construct and operate, the fire safety and the construction convenience are effectively improved, and the comprehensive cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical conduit technology, and in particular to a low-smoke flame-retardant fire-fighting electrical conduit. Background Technology

[0002] In modern building electrical installation projects, electrical conduits play a vital role. They are used to protect wires and cables and ensure the safety and stability of power transmission. Traditional electrical conduits come in many varieties, but they have many shortcomings in terms of fire safety.

[0003] While commonly used PVC electrical conduits offer some insulation and cost advantages, their flame-retardant properties are poor. When exposed to the high temperatures of a fire, PVC easily decomposes, releasing large amounts of dense smoke and toxic gases such as hydrogen chloride. The smoke quickly fills the space, severely obstructing visibility and significantly increasing the difficulty of evacuation. The toxic gases pose a direct threat to the lives and health of trapped individuals, potentially causing poisoning, unconsciousness, and missed escape opportunities. Furthermore, PVC pipes soften, deform, and even collapse rapidly after burning, failing to provide effective protection for internal cables. This exposes the cables, increasing the risk of short circuits, leaks, and other secondary electrical disasters. In addition to fire and rescue operations and overall building electrical safety, metal electrical conduits, such as galvanized steel pipes, while possessing excellent mechanical strength and flame-retardant properties, and able to withstand high temperatures without burning or deforming, are prone to corrosion. Especially in damp, acidic, or alkaline environments such as building basements and bathrooms, prolonged use can lead to rust and corrosion of the pipe walls, affecting not only their own lifespan and reducing the protective effect on cables, but also potentially damaging cable insulation and causing circuit faults. Furthermore, metal conduits are heavy, making handling and installation inconvenient, resulting in high construction costs and low installation efficiency. They require specialized tools and more manpower, and this disadvantage becomes increasingly apparent in large-scale building electrical installation projects.

[0004] Therefore, a low-smoke, flame-retardant fire-fighting electrical conduit is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a low-smoke flame-retardant fire-fighting electrical conduit that can solve the problem that existing PVC electrical conduits release a large amount of dense smoke and toxic and harmful gases when exposed to high-temperature fire environments, and cannot continue to provide effective protection for internal cables, resulting in cable exposure and increasing the risk of secondary electrical disasters.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-smoke flame-retardant fire-fighting electrical conduit, comprising a conduit body, the conduit body comprising a base layer, an inner layer disposed inside the base layer, a middle layer disposed on the surface of the base layer, and an outer layer disposed on the surface of the middle layer;

[0007] Both sides of the tube are fitted with sealing connecting sleeves, and both sides of the surface of the sealing connecting sleeve are fitted with fastening rings.

[0008] Preferably, the base layer is made of a low-smoke flame-retardant polyolefin composite material.

[0009] Preferably, the inner layer is a liner made of a low-friction coefficient polyolefin material, the middle layer is a reinforcing fiber woven mesh layer made of high-strength glass fiber, and the outer layer is a protective layer made of low-smoke flame-retardant polyolefin material, with an uneven texture on the surface of the outer layer.

[0010] Preferably, the middle layer is spirally wrapped around the surface of the base layer to enhance the radial and axial mechanical strength, tensile strength, and impact resistance of the pipe body.

[0011] Preferably, the inorganic flame retardant includes magnesium hydroxide and aluminum hydroxide, which, after surface modification treatment, have good compatibility with polyolefin resin and are uniformly dispersed in the material.

[0012] Preferably, the sealing connection sleeve is made of elastic flame-retardant rubber, and the fastening ring is made of stainless steel, for achieving a sealed connection between pipes.

[0013] Preferably, the low-smoke flame-retardant polyolefin composite material contains nano-scale weather-resistant stabilizers and rare earth element additives to enhance the pipe's corrosion resistance and resist acid and alkali erosion and ultraviolet aging.

[0014] Preferably, a low-friction coefficient polyolefin liner is used to reduce wear on the cable sheath during insertion and removal for maintenance.

[0015] Preferably, a low-smoke flame-retardant polyolefin protective layer is used to enhance the flame-retardant and protective properties of the pipe body, and the textured surface increases the friction between the pipe and the clamp, making construction, installation and fixing easier.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application uses a novel flame-retardant composite material as the base layer, which has excellent low-smoke and halogen-free flame-retardant properties, significantly reducing the generation of smoke and toxic gases during a fire, and ensuring the breathing safety of personnel and evacuation visibility.

[0018] 2. This application optimizes the pipe structure design, enhances mechanical strength and heat resistance stability, can maintain the integrity of the pipe under high temperature in a fire, continuously protect the cable, and the material has strong corrosion resistance, adapts to complex building environments, has moderate weight and is easy to construct and operate, effectively improves fire safety and construction convenience, and reduces overall costs. Attached Figure Description

[0019] Figure 1This is an overall structural diagram of the low-smoke flame-retardant fire-fighting electrical conduit of this utility model;

[0020] Figure 2 This is a schematic diagram of the tube body composition of this utility model;

[0021] Figure 3 This is a front view of the sealing connection sleeve fastening ring of this utility model.

[0022] In the diagram, 1 is the pipe body; 2 is the base layer; 3 is the inner layer; 4 is the middle layer; 5 is the outer layer; 6 is the sealing connection sleeve; and 7 is the fastening ring. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 The present invention provides the following technical solution:

[0025] A low-smoke flame-retardant fire-fighting electrical conduit includes a conduit body 1, the conduit body 1 includes a base layer 2, the base layer 2 has an inner layer 3 inside, the base layer 2 has a middle layer 4 on the surface of the base layer 2, and the middle layer 4 has an outer layer 5 on the surface of the middle layer 4.

[0026] Both sides of the pipe body 1 are fitted with sealing connecting sleeves 6, and both sides of the surface of the sealing connecting sleeve 6 are fitted with fastening rings 7.

[0027] The base layer 2 is made of low-smoke flame-retardant polyolefin composite material. The inner layer 3 is an inner lining layer made of low-friction coefficient polyolefin material. The middle layer 4 is a reinforcing fiber woven mesh layer made of high-strength glass fiber. The outer layer 5 is a protective layer made of low-smoke flame-retardant polyolefin material, and the surface of the outer layer 5 has a textured surface. The middle layer 4 is spirally wrapped around the surface of the base layer 2 to enhance the radial and axial mechanical strength, tensile strength, and impact resistance of the pipe body 1. The inorganic flame retardants include magnesium hydroxide and aluminum hydroxide, which have good compatibility with polyolefin resin and are uniformly dispersed in the material after surface modification treatment. The low-smoke flame-retardant polyolefin composite material contains nano-level weather-resistant stabilizers and rare earth element additives to improve the corrosion resistance of the pipe body 1 and resist acid and alkali corrosion and ultraviolet aging. The low-friction coefficient polyolefin inner lining layer is used to reduce the wear of the cable sheath during insertion and removal maintenance. The low-smoke flame-retardant polyolefin protective layer is used to enhance the flame-retardant and protective performance of the pipe body 1 and increases the friction between the pipe and the clamp with the textured surface, which facilitates construction, installation, and fixing.

[0028] In this embodiment: the electrical conduit, through the cooperation of the base layer 2, inner layer 3, middle layer 4, and outer layer 5, has superior low-smoke flame-retardant performance: compared with traditional PVC electrical conduits, the amount of smoke generated during a fire is reduced by more than 80%, and the emission of toxic gases is almost zero, creating a clear environment for personnel evacuation and reducing the risk of poisoning. It has high mechanical strength: the reinforced fiber braided mesh increases the radial compressive strength of the conduit body 1 by more than 50% and the axial tensile strength by more than 40%, which can resist construction and accidental impacts and protect cables from external damage. It has strong corrosion resistance: it is suitable for complex environments such as acids, alkalis, humidity, and ultraviolet rays, and the corrosion rate is reduced by 90% compared with metal pipes, extending the service life by 2-3 times. It has excellent construction convenience: it is 60% lighter than galvanized steel pipes, and can be easily handled by a single person. The connection and sealing of the conduit body 1 is simple and efficient, reducing installation time by 30%-40% and reducing construction costs.

[0029] Specifically, such as Figure 3 As shown, the sealing connection sleeve 6 is made of elastic flame-retardant rubber, and the fastening ring 7 is made of stainless steel, which is used to achieve a sealed connection between pipes.

[0030] In this embodiment: through the cooperation of the tube body 1, the sealing connecting sleeve 6 and the fastening ring 7, the connecting sleeve is tightly fitted on both sides of the tube body 1, and the fastening ring 7 is tightened to achieve a sealed connection between the tubes, preventing dust and moisture from entering, ensuring the stability of the cable environment inside the tube body 1, and under the high temperature of a fire, the sealing connecting sleeve 6 does not soften or fall off, maintaining the integrity of the seal.

[0031] Working principle: During the use of low-smoke flame-retardant fire-fighting electrical conduit, the cable is inserted into the inside of the conduit body 1. The low-friction coefficient polyolefin inner lining reduces the wear of the cable sheath during insertion and removal maintenance. After the cable is connected, the two conduits 1 are joined together. After the joining is completed, the two conduits 1 are sealed together by the sealing connection sleeve 6 and the fastening ring 7 to prevent dust and moisture from entering, ensuring a stable cable environment inside the conduit body 1. This ensures that the sealing connection sleeve 6 does not soften or fall off under high temperatures during a fire, maintaining the integrity of the seal. The reinforced fiber braided mesh increases the radial compressive strength and axial tensile strength of the conduit body 1, resisting construction and accidental impacts, protecting the cable from external damage, and also has strong corrosion resistance: adaptable to complex environments such as acids, alkalis, humidity, and ultraviolet radiation.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-smoke flame-retardant fire-fighting electrical conduit, comprising a conduit body (1), characterized in that: The pipe body (1) includes a base layer (2), an inner layer (3) is provided inside the base layer (2), a middle layer (4) is provided on the surface of the base layer (2), and an outer layer (5) is provided on the surface of the middle layer (4). Both sides of the tube body (1) are fitted with sealing connecting sleeves (6), and both sides of the surface of the sealing connecting sleeves (6) are fitted with fastening rings (7).

2. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: The base layer (2) is made of low-smoke flame-retardant polyolefin composite material.

3. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: The inner layer (3) is a liner made of low friction coefficient polyolefin material, the middle layer (4) is a reinforcing fiber woven mesh layer made of high strength glass fiber, and the outer layer (5) is a protective layer made of low smoke flame retardant polyolefin material, and the surface of the outer layer (5) is provided with a textured surface.

4. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 3, characterized in that: The middle layer (4) is spirally wrapped around the surface of the base layer (2) to enhance the radial and axial mechanical strength, tensile strength and impact resistance of the tube body (1).

5. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: Inorganic flame retardants include magnesium hydroxide and aluminum hydroxide, which, after surface modification, exhibit good compatibility with polyolefin resins and are uniformly dispersed within the material.

6. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: The sealing connection sleeve (6) is made of elastic flame-retardant rubber, and the fastening ring (7) is made of stainless steel, which is used to achieve a sealed connection between pipes.

7. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: The low-smoke flame-retardant polyolefin composite material contains nano-level weather-resistant stabilizers and rare earth element additives to enhance the corrosion resistance of the pipe body (1) and resist acid and alkali corrosion and ultraviolet aging.

8. The low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: Low-friction coefficient polyolefin liner is used to reduce wear on cable sheaths during insertion and removal for maintenance.

9. A low-smoke flame-retardant fire-fighting electrical conduit according to claim 1, characterized in that: The low-smoke flame-retardant polyolefin protective layer is used to enhance the flame-retardant and protective properties of the pipe body (1), and increases the friction between the pipe and the clamp with the textured surface, which facilitates construction, installation and fixing.

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