Telescopic anti-frost-crack tap water pipeline structure made of composite materials
By designing a retractable, anti-freeze-crack composite material water pipe structure, combining the material combination of composite layer, insulation layer and anti-corrosion coating, and the extensibility of corrugated expansion section, the problem of traditional water pipes freezing and cracking in cold regions has been solved, achieving the effects of low temperature resistance, corrosion resistance and strong adaptability.
Patent Information
- Application Number
- CN202520758807.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-22
AI Technical Summary
Traditional water pipes are prone to freezing and cracking in cold regions due to low temperatures. Existing antifreeze measures are costly, energy-intensive, and made of limited materials, making them difficult to adapt to complex installation environments.
The water pipe structure adopts a retractable, anti-freeze and crack-resistant composite material, including the water pipe body, corrugated expansion section, composite layer, insulation layer and anti-corrosion coating. It utilizes a combination of high-density polyethylene and glass fiber composite materials, polyurethane foam material and polyethylene material coating, combined with the expansion and protrusion design of the corrugated expansion section, to enhance the pipe's low-temperature resistance and corrosion resistance.
It effectively prevents pipes from freezing and cracking, improves insulation performance, extends service life, adapts to temperature changes, reduces heat loss, and enhances friction to prevent water from freezing and expanding.
Smart Images

Figure CN223895320U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water pipe technology, and in particular to a retractable, anti-freeze and crack-resistant composite material water pipe structure. Background Technology
[0002] Water pipes are an important part of the urban water supply system, responsible for delivering purified water from water plants to households and various water users. Their design, installation, maintenance and management are directly related to residents' water safety, water quality assurance and the stable operation of the water supply system.
[0003] In cold regions, traditional water pipes often freeze and expand due to low temperatures, leading to pipe cracks that seriously affect water supply safety. Existing antifreeze measures often involve adding insulation layers or electric heat tracing, but these methods are costly, energy-intensive, and complex to maintain. Furthermore, traditional pipes are made of a single material, making them difficult to adapt to complex and changing installation environments and usage requirements. Therefore, a retractable antifreeze composite material water pipe structure was designed to solve these problems. Utility Model Content
[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology, and to propose a retractable anti-freezing and crack-resistant composite material water pipe structure.
[0005] The technical problem to be solved by this utility model is to provide a retractable anti-freeze and crack-resistant composite material water pipe structure, which solves the problem in the prior art that the device cannot fix the end of the motor connection wire when winding it up, thus affecting the winding efficiency.
[0006] This utility model provides a retractable anti-freeze crack composite material water pipe structure, including a water pipe body and a corrugated expansion section, wherein multiple corrugated expansion sections are equally spaced on the water pipe body.
[0007] The water pipe body includes a composite layer, an insulation layer, and an anti-corrosion coating. The insulation layer is fixedly installed on the outer surface of the composite layer, and the anti-corrosion coating is fixedly installed on the inner surface of the composite layer.
[0008] Preferably, the composite layer is made of a high-density polyethylene and glass fiber composite material.
[0009] Preferably, the insulation layer is made of polyurethane foam material.
[0010] Preferably, the anti-corrosion coating is a polyethylene coating.
[0011] Preferably, multiple reinforcing ribs are fixedly disposed within the composite layer.
[0012] Preferably, the reinforcing rib is made of nylon.
[0013] Preferably, the inner surface of the anti-corrosion coating is provided with a protrusion, which is hemispherical.
[0014] Compared with the prior art, this utility model has at least the following beneficial effects:
[0015] 1. This utility model incorporates a composite layer, an insulation layer, and an anti-corrosion coating. The composite layer, made of high-density polyethylene and glass fiber composite material, ensures the strength and low-temperature resistance of the water pipe body, preventing it from freezing and cracking. The insulation layer, made of polyurethane foam, provides excellent insulation, reducing heat loss from the water pipe body and improving insulation performance. The anti-corrosion coating, made of polyethylene, offers excellent corrosion resistance, preventing corrosion of the inner wall of the water pipe body and extending its service life.
[0016] 2. This utility model incorporates a corrugated expansion section. Based on the expansion and contraction of the corrugated expansion section, the water pipe body can expand and contract within a certain range through the corrugated expansion section, thereby adapting to changes in the length of the water pipe body caused by temperature changes, and further achieving the effect of preventing the water pipe body from freezing and cracking.
[0017] 3. This utility model features protrusions that increase the friction coefficient of the anti-corrosion coating, thereby increasing the friction force when water flows through the anti-corrosion coating inside the water pipe. The friction between the tap water and the protrusions on the anti-corrosion coating generates heat, which prevents the water inside the water pipe from freezing and expanding, thus preventing the water pipe from freezing and cracking. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a three-dimensional schematic diagram of a partial structure of the water pipe body of this utility model.
[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the water supply pipe body of this utility model.
[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A.
[0023] [Figure Labels]
[0024] 1. Water pipe body; 101. Composite layer; 102. Insulation layer; 103. Anti-corrosion coating; 1031. Protrusion; 104. Reinforcing rib; 2. Corrugated expansion section. Detailed Implementation
[0025] Example:
[0026] like Figures 1-4 As shown, the embodiment of this utility model provides a retractable anti-freeze crack composite material water pipe structure, including a water pipe body 1 and a corrugated expansion section 2. Multiple corrugated expansion sections 2 are arranged at equal intervals on the water pipe body 1.
[0027] The main body of the water pipe 1 includes a composite layer 101, an insulation layer 102, and an anti-corrosion coating 103. The insulation layer 102 is fixedly installed on the outer surface of the composite layer 101, and the anti-corrosion coating 103 is fixedly installed on the inner surface of the composite layer 101.
[0028] In this embodiment, the composite layer 101 is made of high-density polyethylene and glass fiber composite material to ensure the strength and low-temperature resistance of the composite layer 101, thereby ensuring the strength and low-temperature resistance of the water pipe body 1.
[0029] In this embodiment, the insulation layer 102 is made of polyurethane foam material, which reduces heat loss from the water pipe body 1 and improves the insulation effect.
[0030] In this embodiment, the anti-corrosion coating 103 is a polyethylene coating to prevent corrosion of the inner wall of the water pipe body 1 and extend its service life.
[0031] By incorporating a composite layer 101, an insulation layer 102, and an anti-corrosion coating 103, the composite layer 101, made of high-density polyethylene and glass fiber composite material, ensures the strength and low-temperature resistance of the water pipe body 1, preventing it from freezing and cracking at low temperatures. The insulation layer 102, made of polyurethane foam, provides excellent insulation, reducing heat loss from the water pipe body 1 and improving insulation performance. The anti-corrosion coating 103, made of polyethylene, offers excellent corrosion resistance, preventing corrosion of the inner wall of the water pipe body 1 and extending its service life.
[0032] By incorporating a corrugated expansion section 2, the water pipe body 1 can expand and contract within a certain range due to the elasticity of the corrugated expansion section 2, thereby adapting to the length changes of the water pipe body 1 caused by temperature changes and further preventing the water pipe body 1 from freezing and cracking.
[0033] In this embodiment, multiple reinforcing ribs 104 are fixedly disposed inside the composite layer 101.
[0034] In this embodiment, the reinforcing rib 104 is made of nylon to increase the strength of the composite layer 101.
[0035] By setting reinforcing ribs 104 in the composite layer 101, which are made of nylon, the strength of the composite layer 101 is further increased, and the effect of preventing the water pipe body 1 from freezing and cracking is further enhanced.
[0036] In this embodiment, the inner surface of the anti-corrosion coating 103 is provided with a protrusion 1031, which is hemispherical.
[0037] By providing protrusions 1031, the friction coefficient of the anti-corrosion coating 103 can be increased, thereby increasing the friction force when water flows through the anti-corrosion coating 103 inside the water pipe body 1. When the tap water flows through the water pipe body 1, it generates heat by rubbing against the protrusions 1031 on the anti-corrosion coating 103, which can prevent the water inside the water pipe body 1 from freezing and prevent the water inside the water pipe body 1 from freezing and expanding, causing the water pipe body 1 to freeze and crack.
[0038] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.
Claims
1. A retractable, frost-resistant, crack-resistant composite material water pipe structure, characterized in that: It includes a water pipe body (1) and a corrugated expansion section (2), wherein multiple corrugated expansion sections (2) are provided at equal intervals on the water pipe body (1); The water pipe body (1) includes a composite layer (101), a heat insulation layer (102) and an anti-corrosion coating (103). The heat insulation layer (102) is fixedly provided on the outer surface of the composite layer (101), and the anti-corrosion coating (103) is fixedly provided on the inner surface of the composite layer (101).
2. The expandable anti-freeze crack composite material water pipe structure according to claim 1, characterized in that: The composite layer (101) is made of high-density polyethylene and glass fiber composite material.
3. The retractable anti-freeze and crack-resistant composite material water pipe structure according to claim 2, characterized in that: The insulation layer (102) is made of polyurethane foam material.
4. The expandable anti-freeze crack composite material water pipe structure according to claim 3, characterized in that: The anti-corrosion coating (103) is a polyethylene coating.
5. The expandable anti-freeze crack composite material water pipe structure according to claim 4, characterized in that: Multiple reinforcing ribs (104) are fixedly installed inside the composite layer (101).
6. The expandable anti-freeze crack composite material water pipe structure according to claim 5, characterized in that: The reinforcing rib (104) is made of nylon.
7. The expandable anti-freeze crack composite material water pipe structure according to claim 4, characterized in that: The inner surface of the anti-corrosion coating (103) is provided with a protrusion (1031), which is hemispherical.