Composite puncture-resistant fire hose
The fire hose with a multi-layer composite structure solves the problems of chemical corrosion, radial expansion and puncture resistance of traditional fire hoses, and achieves high strength pressure resistance, chemical corrosion resistance and long-term wear resistance, ensuring the reliability of fire hoses in complex fire scenes.
Patent Information
- Application Number
- CN202520581782.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Traditional fire hoses are susceptible to chemical corrosion and leakage, radial expansion and rupture, have poor abrasion resistance and insufficient puncture resistance, making it difficult to provide reliable protection in complex fire scenes.
It adopts a multi-layer composite structure, including a chemical corrosion resistant layer, a pressure-bearing inner lining layer, a buffer layer, a puncture-resistant reinforcement layer, a flame-retardant and heat-insulating layer, and a protective outer layer, which provides multi-functional protection by utilizing the synergistic effect of each layer of materials.
It achieves high strength pressure resistance, chemical corrosion resistance, long-term wear resistance and multi-level puncture resistance, ensuring the reliability and safety of fire hoses in complex fire environments.
Smart Images
Figure CN223881893U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of fire hose, especially to a composite anti-puncture fire hose. BACKGROUND
[0002] As the core equipment of fire rescue, the reliability of fire hose is directly related to the fire efficiency and rescue safety. The traditional fire hose adopts single layer or simple composite structure, which has significant limitations: easy to be corroded by chemicals, leading to leakage; easy to expand and break radially under high-pressure water flow; weak in heat conduction control ability under high-temperature environment, easy to cause structural failure; poor in wear resistance, easy to wear and crack after long-term dragging; insufficient in anti-puncture performance, easy to be punctured by sharp objects in complex fire scenes. Therefore, it is urgent to develop a composite anti-puncture fire hose with high-strength pressure resistance, chemical corrosion resistance, efficient heat insulation, long-term wear resistance, and multi-level anti-puncture, which can provide reliable protection for complex fire environment. SUMMARY
[0003] In order to overcome the shortcomings of the traditional fire hose, which adopts single layer or simple composite structure, and has significant limitations: easy to be corroded by chemicals, leading to leakage; easy to expand and break radially under high-pressure water flow; weak in heat conduction control ability under high-temperature environment, easy to cause structural failure; poor in wear resistance, easy to wear and crack after long-term dragging; insufficient in anti-puncture performance, easy to be punctured by sharp objects in complex fire scenes, the technical problem to be solved by the utility model is to provide a composite anti-puncture fire hose with high-strength pressure resistance, chemical corrosion resistance, efficient heat insulation, long-term wear resistance, and multi-level anti-puncture, which can provide reliable protection for complex fire environment.
[0004] The utility model is achieved by the following specific technical means:
[0005] A composite anti-puncture fire hose comprises a fire hose body and connecting buckles fixedly connected to both ends of the fire hose body.
[0006] The fire hose body is provided with a chemical corrosion resistant layer made of perfluoroether rubber on the innermost side; a pressure bearing inner lining layer is fixedly bonded outside the chemical corrosion resistant layer; the pressure bearing inner lining layer is made of thermoplastic polyurethane material; a buffer layer is fixedly bonded to the side of the pressure bearing inner lining layer away from the chemical corrosion resistant layer; an anti-puncture reinforcing layer is fixedly bonded to the side of the buffer layer away from the pressure bearing inner lining layer; a flame-retardant heat insulation layer is fixedly bonded to the side of the anti-puncture reinforcing layer away from the buffer layer; a protective outer layer is fixedly bonded to the side of the flame-retardant heat insulation layer away from the anti-puncture reinforcing layer; the fire hose body is sequentially provided with the chemical corrosion resistant layer, the pressure bearing inner lining layer, the buffer layer, the anti-puncture reinforcing layer, the flame-retardant heat insulation layer, and the protective outer layer from inside to outside.
[0007] Further, the buffer layer is made of hydrogenated nitrile rubber foam; it has high elasticity and can absorb impact energy during use.
[0008] Furthermore, the puncture-resistant reinforcing layer adopts a mesh structure formed by interlacing aramid fibers and ultra-high molecular weight polyethylene fibers; aramid fibers have high strength and excellent tensile properties, while ultra-high molecular weight polyethylene fibers have extremely strong energy absorption capacity, making them suitable for resisting high-speed impacts; the interlaced weave structure can exert a synergistic effect, with the high modulus of aramid fibers providing rigid support and the high toughness of ultra-high molecular weight polyethylene fibers absorbing impact energy, forming a mechanical response that combines rigidity and flexibility; it has good protective capabilities against impacts from sharp objects.
[0009] Furthermore, the flame-retardant and heat-insulating layer is composed of alternating layers of basalt fiber cloth and expanded graphite sheets; the basalt fiber cloth is high-strength and high-temperature resistant, the expanded graphite sheets are thermally conductive, compressible, and expand at high temperatures, the expanded graphite can conduct heat in a directional manner, and the basalt fiber reduces the overall heat conduction.
[0010] Furthermore, the protective outer layer is made of polyurethane elastomer, and the outer surface of the protective outer layer is provided with an array of hemispherical wear-resistant protrusions; the polyurethane elastomer has excellent wear resistance, elasticity and tear resistance; it can effectively resist scratches, impacts and long-term friction; the hemispherical protrusions serve as contact points to preferentially bear wear, disperse local stress, reduce material loss and extend service life.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This invention achieves high strength pressure resistance, resistance to chemical corrosion, high efficiency heat insulation, long-term wear resistance and multi-level puncture resistance, providing reliable protection for complex fire environments. Attached Figure Description
[0013] Fig. 1 This is a schematic diagram of the main structure of this utility model.
[0014] Fig. 2 This is a cross-sectional view of the main body of the fire hose of this utility model.
[0015] The markings in the attached diagram are as follows: 1-Fire hose body, 2-Connecting buckle, 11-Chemical corrosion resistant layer, 12-Pressure bearing inner lining layer, 13-Buffer layer, 14-Puncture resistant reinforcing layer, 15-Flame retardant and heat insulation layer, 16-Protective outer layer. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings: Example
[0017] A composite puncture-resistant fire hose, such as Figs. 1-2 As shown, it includes a fire hose body 1 and connecting buckles 2 fixedly connected to both ends of the fire hose body 1;
[0018] The fire hose body 1 is sequentially provided with the chemical corrosion resistant layer 11, the pressure bearing inner lining layer 12, the buffer layer 13, the anti-puncture reinforcing layer 14, the flame-retardant heat-insulating layer 15 and the protective outer layer 16 from inside to outside.
[0019] Working principle:
[0020] The fire hose provided by the utility model, the fire hose body 1 sequentially comprises the pressure bearing inner lining layer 12, the buffer layer 13, the anti-puncture reinforcing layer 14, the flame-retardant heat-insulating layer 15 and the protective outer layer 16 from inside to outside, and realizes multifunctional protection based on the synergistic effect of the multilayer composite structure; the chemical corrosion resistant layer 11 of perfluoroether rubber at the innermost side forms a chemical inert barrier by virtue of a stable carbon-fluorine bond structure, effectively preventing the erosion of acid and alkali solvents; the pressure bearing inner lining layer 12 forms a double composite pressure bearing mechanism by the topological reinforcement of the axial reinforcing rib and the high resilience of thermoplastic polyurethane, which can not only disperse circumferential stress through material elastic deformation, but also prevent the radial expansion of the pipe body by relying on the axial constraint of the reinforcing rib; when subjected to external impact, the hydrogenated nitrile rubber foaming buffer layer 13 dissipates impact kinetic energy through the compressible deformation of the closed cell structure, and cooperates with the rigid-flexible coupling effect of aramid fibers and ultrahigh molecular weight polyethylene fibers in the anti-puncture reinforcing layer 14; the high modulus of aramid fibers forms a rigid support network to resist the initial invasion of the puncture object, and the ultrahigh molecular weight polyethylene fibers absorb the remaining impact energy through molecular chain slipping and crystalline region reorganization, forming a multi-stage energy dissipation mechanism; the flame-retardant heat-insulating layer 15 has the heat insulation barrier effect of basalt fibers and the double response of sheet layer thermal conduction expansion of expanded graphite, which can not only block heat conduction through the fiber interlaced structure in a high temperature environment, but also realize directional heat diffusion by using the interlayer slipping of expanded graphite, and at the same time, forms a dense carbon layer to isolate oxygen when encountering open flames; the polyurethane elastomer of the outer protective layer converts local concentrated load into multi-point distributed load through the stress dispersion design of the surface hemispherical protrusions, and combines the super-elastic characteristics of the material itself to reduce the surface wear rate through the elastic deformation of the protrusions when subjected to friction, realizing long-term protection; the synergistic optimization of the material properties and structural design of each functional layer finally forms a comprehensive protection system of chemical protection, mechanical bearing, energy dissipation, thermal protection and surface protection.
[0021] While the present disclosure has been described in detail with respect to exemplary embodiments, the present disclosure is not limited to such examples and it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the scope of the present disclosure.
Claims
1. A composite anti-puncture fire hose, comprising a fire hose body (1), and a connecting buckle (2) fixedly connected to both ends of the fire hose body (1). characterized in that The fire hose body (1) has a chemical corrosion resistant layer (11) at the innermost side; the chemical corrosion resistant layer (11) is fixedly bonded with a pressure bearing inner liner (12) on the outer side; the pressure bearing inner liner (12) is fixedly bonded with a buffer layer (13) on the side away from the chemical corrosion resistant layer (11); the buffer layer (13) is fixedly bonded with an anti-puncture reinforcing layer (14) on the side away from the pressure bearing inner liner (12); the anti-puncture reinforcing layer (14) is fixedly bonded with a fire-retardant and heat-insulating layer (15) on the side away from the buffer layer (13); the fire-retardant and heat-insulating layer (15) is fixedly bonded with a protective outer layer (16) on the side away from the anti-puncture reinforcing layer (14); the fire hose body (1) is sequentially provided with the chemical corrosion resistant layer (11), the pressure bearing inner liner (12), the buffer layer (13), the anti-puncture reinforcing layer (14), the fire-retardant and heat-insulating layer (15), and the protective outer layer (16) from the inside to the outside.
2. A composite puncture resistant fire hose according to claim 1, wherein, The buffer layer (13) is made of foamed hydrogenated nitrile rubber.
3. The composite puncture resistant firehose of claim 1, wherein, The anti-puncture reinforcing layer (14) adopts a mesh structure formed by interlaced weaving of aramid fibers and ultra-high molecular weight polyethylene fibers.
4. The composite puncture resistant firehose of claim 1, wherein, The fire-retardant and heat-insulating layer (15) is composed of alternately stacked basalt fiber cloth and expanded graphite sheet.
5. The composite puncture resistant firehose of claim 1, wherein, The protective outer layer (16) is made of polyurethane elastomer, and the outer surface of the protective outer layer (16) is provided with an array of hemispherical wear-resistant protrusions.