Buried electric power communication cable hdpe spiral sheath pipe

Abstract

The utility model relates to electric power communication technical field discloses a buried electric power communication cable HDPE spiral sheath pipe, including foundation and protective sleeve, the protective sleeve sets up inside the foundation, the waterproof layer is provided in the protective sleeve inside, the wear -resisting layer is provided in the protective sleeve inner wall, the waterproof layer sets up between the protective sleeve and wear -resisting layer, the telescopic component is provided in the protective sleeve inside, the telescopic component includes expansion joint and bellows, both ends of expansion joint are fixedly connected in the protective sleeve inside. In the utility model, through expansion joint and bellows, can effectively absorb the deformation amount that protective sleeve produced because of temperature change, external pressure, avoid sheath pipe cracking, fixed clamp collocation buffer pad no.

Description

Technical Field

[0001] This utility model relates to the field of power communication technology, and in particular to a buried power communication cable HDPE spiral sheath pipe. Background Technology

[0002] In power and communication engineering, buried cables serve as crucial infrastructure for transmitting power and signals. Their safe and stable operation directly impacts the normal order of social production and daily life. Because cables are buried underground for extended periods, they are susceptible to various factors such as groundwater erosion, soil pressure, temperature variations causing expansion and contraction, and external construction work. These factors make them prone to wear, corrosion, and breakage, potentially leading to serious consequences such as power outages and communication failures. The application of HDPE spiral sheathing for buried power and communication cables provides a robust physical barrier. Leveraging the excellent corrosion resistance, abrasion resistance, and flexibility of HDPE material, it effectively resists the harmful effects of the complex underground environment, reduces the direct impact of external factors on the cable, extends its service life, lowers maintenance costs, and ensures the continuous and stable operation of power and communication systems. It is an indispensable protective device for underground cable laying.

[0003] In existing technologies, buried cables are mostly protected using ordinary plastic conduits or metal conduits. Ordinary plastic conduits are usually buried directly in the foundation, relying on the properties of their material to provide simple protection for the cable, while metal conduits resist external pressure through their high-strength structure.

[0004] However, existing protective sleeves have significant shortcomings in practical use: in buried environments, the sleeves are prone to expansion and contraction due to temperature changes, and ordinary sleeves lack effective deformation absorption structures. Long-term expansion and contraction stress can lead to cracking and damage of the sleeves. At the same time, traditional fixing methods are difficult to balance stability and buffering, and external pressure can be directly transmitted to the sleeves and internal cables. Furthermore, their waterproof and wear-resistant properties are limited, and they cannot provide a long-term stable protective environment for cables. Therefore, a buried HDPE spiral sheath for power and communication cables is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a buried HDPE spiral sheath for power and communication cables, aiming to improve the problem in the existing technology that the sheath is prone to expansion and contraction due to temperature changes in the buried environment, which leads to cracking and damage of the sheath.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A buried HDPE spiral sheath for power and communication cables includes a foundation and a protective sheath. The protective sheath is disposed inside the foundation and has a waterproof layer inside. The inner wall of the protective sheath has a wear-resistant layer. The waterproof layer is disposed between the protective sheath and the wear-resistant layer. An expansion joint is disposed inside the protective sheath.

[0008] The telescopic assembly includes a telescopic joint and a bellows. Both ends of the telescopic joint are fixedly connected inside the protective sleeve, and the bellows is disposed on the outer wall of the telescopic joint.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the protective sleeve is provided with a fixing clamp, and the bottom of the fixing clamp is in contact with the foundation surface.

[0011] As a further description of the above technical solution:

[0012] Bolts are threaded through both sides of the outer wall of the fixing clamp, and the bolts are threaded into the foundation.

[0013] As a further description of the above technical solution:

[0014] A buffer pad is installed inside the foundation, and the buffer pad is in contact with the outer wall of the protective sleeve.

[0015] As a further description of the above technical solution:

[0016] The fixing clamp has a second buffer pad inside, which is in contact with the outer wall of the protective sleeve.

[0017] As a further description of the above technical solution:

[0018] The waterproof layer is made of polymer waterproof membrane, which has good waterproof and seepage-proof performance.

[0019] As a further description of the above technical solution:

[0020] The wear-resistant layer is made of polytetrafluoroethylene, which has high hardness and strong wear resistance, extending the service life of the sheath.

[0021] This utility model has the following beneficial effects:

[0022] In this invention, the expansion joint and corrugated pipe effectively absorb the deformation of the protective sleeve caused by temperature changes and external pressure, preventing the sleeve from cracking. The fixing clamp, together with buffer pad one and buffer pad two, not only firmly fixes the protective sleeve but also buffers the impact of external forces. The waterproof layer and wear-resistant layer protect the protective sleeve and the internal cable from the perspectives of waterproofing and wear resistance, respectively. The overall structure optimizes the installation, protection, and maintenance of buried protective sleeves, improving the protection effect for power and communication cables. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a buried HDPE spiral sheath for power and communication cables proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of the expansion joint structure of an HDPE spiral sheath for buried power and communication cables proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the internal structure of a protective sleeve for a buried HDPE spiral sheath pipe for power and communication cables proposed in this utility model.

[0026] Legend:

[0027] 1. Foundation; 2. Protective sleeve; 3. Expansion joint; 4. Corrugated pipe; 5. Buffer pad one; 6. Fixing clamp; 7. Bolt; 8. Waterproof layer; 9. Wear-resistant layer; 10. Buffer pad two. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1-3 This utility model provides an embodiment of a buried power communication cable HDPE spiral sheath, including a foundation 1 and a protective sheath 2. The protective sheath 2 is made of HDPE material spirally wound and has the characteristics of light weight, high strength and corrosion resistance. The protective sheath 2 is set inside the foundation 1. A waterproof layer 8 is set inside the protective sheath 2, which can effectively block groundwater from seeping in and prevent water from contacting the internal cable and causing short circuit or corrosion. A wear-resistant layer 9 is set on the inner wall of the protective sheath 2, which can reduce the friction damage between the cable and the inner wall of the sheath during the process of cable insertion or use. The waterproof layer 8 is set between the protective sheath 2 and the wear-resistant layer 9. A telescopic component is set inside the protective sheath 2.

[0030] The expansion joint includes an expansion joint 3 and a bellows 4. Both ends of the expansion joint 3 are fixedly connected inside the protective sleeve 2. The bellows 4 is located on the outer wall of the expansion joint 3, working in conjunction with it to further enhance the flexibility and deformation capacity of the protective sleeve 2. The expansion joint 3 and the bellows 4 can jointly absorb deformation, dispersing and dissipating stress, preventing the protective sleeve 2 from cracking or breaking due to excessive stretching or compression, thus ensuring the integrity and stability of the overall structure of the protective sleeve. A fixing clamp 6 is provided on the outer wall of the protective sleeve 2. The bottom of the fixing clamp 6 is in contact with the surface of the foundation 1. Bolts 7 are threaded through both sides of the outer wall of the fixing clamp 6. Inside the foundation 1, there is a buffer pad 5 that contacts the outer wall of the protective sleeve 2. Inside the fixing clamp 6, there is a buffer pad 10 that contacts the outer wall of the protective sleeve 2. Buffer pad 10 and buffer pad 15 are both made of rubber and contact the outer wall of the protective sleeve 2. When the fixing clamp 6 is tightened, it can enhance the tightness of the fixation and buffer the direct effect of external pressure on the protective sleeve 2. The waterproof layer 8 is made of high-polymer waterproof membrane, which has good waterproof and seepage prevention performance. The wear-resistant layer 9 is made of polytetrafluoroethylene, which has high hardness and strong wear resistance, extending the service life of the protective sleeve.

[0031] Working principle: During underground installation, a buffer pad 5 is first laid in the foundation 1, and the protective sleeve 2 is placed on it. The fixing clamp 6 is installed on the surface of the foundation 1 by bolts 7. The internal buffer pad 10 fits against the outer wall of the protective sleeve 2, which not only secures it but also buffers external forces. When the ambient temperature changes or is subjected to external pressure, and when the protective sleeve 2 expands or contracts due to temperature changes or external pressure, the corrugated pipe 4 can work together with the expansion joint 3 to absorb the deformation, preventing the protective sleeve 2 from cracking or breaking, and ensuring the overall structural stability of the protective sleeve. The waterproof layer 8 blocks groundwater, and the wear-resistant layer 9 reduces the wear of the cable on the inner wall. From the aspects of installation and fixing, deformation buffering, waterproofing and wear resistance, it provides a stable protective environment for the internal power and communication cables, ensuring the normal operation of the cables.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 buried HDPE spiral sheath for power and communication cables, comprising a foundation (1) and a protective sheath (2), characterized in that: The protective sleeve (2) is installed inside the foundation (1). A waterproof layer (8) is installed inside the protective sleeve (2). A wear-resistant layer (9) is installed on the inner wall of the protective sleeve (2). The waterproof layer (8) is installed between the protective sleeve (2) and the wear-resistant layer (9). A telescopic component is installed inside the protective sleeve (2). The telescopic assembly includes a telescopic joint (3) and a bellows (4). Both ends of the telescopic joint (3) are fixedly connected inside the protective sleeve (2), and the bellows (4) is disposed on the outer wall of the telescopic joint (3).

2. The HDPE spiral sheath pipe for buried power and communication cables according to claim 1, characterized in that: The outer wall of the protective sleeve (2) is provided with a fixing clamp (6), and the bottom of the fixing clamp (6) is in contact with the surface of the foundation (1).

3. The HDPE spiral sheath pipe for buried power and communication cables according to claim 2, characterized in that: Bolts (7) are threaded through both sides of the outer wall of the fixing clamp (6), and the bolts (7) are threaded into the foundation (1).

4. The HDPE spiral sheath pipe for buried power and communication cables according to claim 1, characterized in that: The foundation (1) is provided with a buffer pad (5) inside, and the buffer pad (5) is in contact with the outer wall of the protective sleeve (2).

5. The HDPE spiral sheath pipe for buried power and communication cables according to claim 2, characterized in that: The fixing clamp (6) is provided with a buffer pad two (10) inside, and the buffer pad two (10) is in contact with the outer wall of the protective sleeve (2).

6. The HDPE spiral sheath pipe for buried power and communication cables according to claim 1, characterized in that: The waterproof layer (8) is made of polymer waterproof membrane, which has good waterproof and seepage prevention performance.

7. The HDPE spiral sheath pipe for buried power and communication cables according to claim 1, characterized in that: The wear-resistant layer (9) is made of polytetrafluoroethylene, which has high hardness and strong wear resistance, thus extending the service life of the sheath.

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