An anticorrosion underground cable laying protection structure

Abstract

The utility model discloses an anticorrosive underground cable laying protection structure belongs to underground cable laying technical field, and its technical scheme main points include cable body, the outside of cable body is provided with surface layer protection structure, and the application greatly promotes the protection performance of cable body in underground environment through setting surface layer protection structure, and the inner protective layer adopts rubber material, and the good flexibility is closely attached cable body, and the effective buffer external impact force, reduces the risk of cable body because of external force damage, and the anticorrosive layer is composed of ceramic fiber layer and nanometer anticorrosive coating, and the ceramic fiber layer is high temperature -resistant, corrosion -resistant, and the nanometer anticorrosive coating further strengthens the anticorrosive performance, can effectively resist the moisture, acid -base substance and microorganism erosion in the soil, and the outer protective layer selects high -strength corrosion -resistant plastic, possesses stronger mechanical strength and weather resistance, can prevent external mechanical damage, can also resist ultraviolet, temperature change and other environmental factors.

Description

Technical Field

[0001] This utility model relates to the field of underground cable laying technology, and in particular to a corrosion-resistant underground cable laying protective structure. Background Technology

[0002] With the continuous growth of urban construction and electricity demand, the scale of underground cable laying is expanding. During the transmission of electricity, underground cables are in a complex environment and are easily corroded by factors such as soil moisture, acid and alkali substances and microorganisms, which can damage the cable sheath, affect the normal operation of the cable, and even cause safety accidents.

[0003] Currently, the most common underground cable protection structures on the market are metal armor and ordinary plastic sheaths. Although metal armor can enhance mechanical protection, it is prone to electrochemical corrosion in humid underground environments. Once the armor layer is penetrated, the cable loses its protection. Ordinary plastic sheaths have a certain degree of insulation, but their corrosion resistance is limited. In harsh soil environments, they are prone to aging and embrittlement, resulting in a decline in protective performance. In addition, existing protection structures lack effective measures to deal with corrosion problems at cable joints. As a weak link in the cable line, once the cable joint is corroded, it will seriously affect the connection stability and power transmission efficiency of the cable.

[0004] Therefore, a corrosion-resistant protective structure for underground cable laying is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a corrosion-resistant underground cable laying protection structure, which can solve the problems of existing underground cable protection structures, which are mainly metal armor and ordinary plastic sheaths. Although metal armor can enhance mechanical protection, it is prone to electrochemical corrosion in humid underground environments. Once the armor layer is penetrated, the cable loses its protection. Ordinary plastic sheaths have a certain degree of insulation, but their corrosion resistance is limited. In harsh soil environments, they are prone to aging and embrittlement, resulting in a decline in protective performance. In addition, existing protection structures lack effective measures to deal with corrosion problems at cable joints. As a weak link in the cable line, once the cable joint is corroded, it will seriously affect the connection stability and power transmission efficiency of the cable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant underground cable laying protection structure, comprising a cable body, a surface protection structure provided on the outer side of the cable body, a joint protection structure provided on the outer side of the surface protection structure, and the joint protection structure located at the joint of the cable body. The surface protection structure includes an inner protective layer, an anti-corrosion layer, and an outer protective layer sequentially disposed on the outside of the cable body. The outer side of the outer protective layer contacts the inner side of the joint protection structure. The inner protective layer is made of rubber and has good flexibility. The anti-corrosion layer is made of a ceramic fiber layer and a nano anti-corrosion coating. The outer protective layer is made of high-strength corrosion-resistant plastic and has strong mechanical strength and weather resistance.

[0007] Preferably, the joint protection structure includes a lower protective shell disposed on the front side of the bottom of the outer protective layer, and fixing blocks are welded to the front and rear sides of both sides of the lower protective shell, and threaded holes are provided on the top of the fixing blocks.

[0008] Preferably, an upper protective shell is provided on the front side of the top of the protective layer, the bottom of the upper protective shell is in contact with the top of the lower protective shell, and connecting blocks are welded to the front and rear sides of both sides of the upper protective shell, the bottom of the connecting blocks is in contact with the top of the lower protective shell.

[0009] Preferably, the connecting block is internally rotatably connected to a connecting screw, the bottom of the connecting screw is threaded into the inside of the thread, and a sealing gasket is bonded to the inner side of the lower protective shell and the upper protective shell. The inner side of the sealing gasket contacts the outer side of the outer protective layer, and the sealing gasket is located on the outer side of the cable body joint.

[0010] Preferably, the thickness of the inner protective layer is 3-5 mm, and it is directly wrapped around the outside of the cable body using an extrusion molding process.

[0011] Preferably, the thickness of the anti-corrosion layer is 2-4 mm, and it is tightly wound onto the outside of the inner protective layer using a winding method at a certain winding angle and tension.

[0012] Preferably, the outer protective layer has a thickness of 5-8 mm, and it is processed by injection molding and set on the outside of the anti-corrosion layer.

[0013] Preferably, the lower protective shell has connecting holes on both sides of its top, and the upper protective shell has connecting rods fixedly connected to both sides of its bottom, with the connecting rods inserted into the connecting holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This application greatly improves the protection performance of the cable body in underground environments by setting up a surface protection structure. The inner protective layer is made of rubber material, which fits tightly with the cable body with good flexibility, effectively buffering external impact and reducing the risk of damage to the cable body due to external forces. The anti-corrosion layer is composed of a ceramic fiber layer and a nano anti-corrosion coating. The ceramic fiber layer is resistant to high temperature and corrosion, and the nano anti-corrosion coating further enhances the anti-corrosion performance, effectively resisting the erosion of moisture, acid and alkali substances and microorganisms in the soil. The outer protective layer is made of high-strength corrosion-resistant plastic, which has strong mechanical strength and weather resistance. It can not only prevent external mechanical damage, but also resist environmental factors such as ultraviolet rays and temperature changes. The multi-layer protection works together to significantly extend the service life of the cable body when laid underground. 2. This application, by setting up a joint protection structure, tightly wraps around the outside of the outer protective layer and is located at the cable body joint. On the basis of the cable body joint being wrapped with insulating tape or other insulating materials, the joint protection structure can also effectively isolate external moisture and corrosive substances, preventing corrosion at the joint. This ensures the connection stability of the cable body joint, making power transmission more stable and reliable, reducing power transmission interruptions or efficiency reductions caused by joint corrosion, and effectively guaranteeing the safe and stable operation of the underground cable system. Attached Figure Description

[0015] Figure 1 An overall structural diagram of the corrosion-resistant underground cable laying protection structure of this utility model; Figure 2 This is a structural diagram of the cable body of this utility model; Figure 3 This is a structural diagram of the surface protection structure of this utility model; Figure 4 This is a structural diagram of the connector protection structure of this utility model.

[0016] In the diagram, 1. Cable body; 2. Surface protection structure; 21. Inner protective layer; 22. Anti-corrosion layer; 23. Outer protective layer; 3. Joint protection structure; 31. Lower protective shell; 32. Fixing block; 33. Threaded hole; 34. Upper protective shell; 35. Connecting block; 36. Connecting screw; 37. Sealing gasket; 4. Connecting hole; 5. Connecting rod. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 The present invention provides the following technical solution: A corrosion-resistant underground cable laying protection structure includes a cable body 1, a surface protection structure 2 on the outside of the cable body 1, a joint protection structure 3 on the outside of the surface protection structure 2, and the joint protection structure 3 is located at the joint of the cable body 1. The surface protection structure 2 includes an inner protective layer 21, an anti-corrosion layer 22, and an outer protective layer 23 sequentially disposed on the outside of the cable body 1. The outer side of the outer protective layer 23 contacts the inner side of the joint protection structure 3. The inner protective layer 21 is made of rubber and has good flexibility. The anti-corrosion layer 22 is made of ceramic fiber layer and nano anti-corrosion coating. The outer protective layer 23 is made of high-strength corrosion-resistant plastic and has strong mechanical strength and weather resistance.

[0019] In this embodiment: By setting the surface protection structure 2 and the joint protection structure 3, when the cable body 1 is laid underground, the surface protection structure 2 begins to function. The rubber material of the inner protective layer 21, with its good flexibility, tightly adheres to the cable body 1, which can promptly buffer various impacts from the outside and reduce the risk of direct damage to the cable body 1 caused by external forces. The ceramic fiber layer and the nano anti-corrosion coating of the anti-corrosion layer 22 work together. The ceramic fiber layer is resistant to high temperature and corrosion, first blocking most of the corrosive substances in the soil. The nano anti-corrosion coating further strengthens the protection, making it difficult for moisture, acid and alkali substances and microorganisms in the soil to corrode the cable body 1. The high-strength corrosion-resistant plastic of the outer protective layer 23 resists external mechanical impacts and extrusions with its strong mechanical strength. The cable body 1 is protected by a high-pressure, high-weather-resistance material that effectively resists environmental factors such as ultraviolet radiation and temperature changes, providing comprehensive protection and significantly extending its service life. The joint protection structure 3 focuses on protecting the joint of the cable body 1. At the joint of the cable body 1, it is tightly wrapped around the outside of the outer protective layer 23, providing additional protection for the joint. On the basis of the cable body 1 joint being wrapped with insulating material, the joint protection structure 3 can further isolate external moisture and corrosive substances, preventing these harmful factors from corroding the joint. The connection stability of the cable body 1 joint is guaranteed, ensuring stable and reliable power transmission and effectively reducing the occurrence of power transmission interruptions or efficiency reductions caused by joint corrosion, thereby strongly guaranteeing the safe and stable operation of the entire underground cable system.

[0020] Specifically, such as Figure 4 As shown, the joint protection structure 3 includes a lower protective shell 31 located on the front side of the bottom of the outer protective layer 23. Fixing blocks 32 are welded to the front and rear sides of both sides of the lower protective shell 31. Threaded holes 33 are opened on the top of the fixing blocks 32.

[0021] Specifically, such as Figure 4As shown, an upper protective shell 34 is provided on the front side of the top of the protective layer. The bottom of the upper protective shell 34 contacts the top of the lower protective shell 31. Connecting blocks 35 are welded to the front and rear sides of both sides of the upper protective shell 34. The bottom of the connecting blocks 35 contacts the top of the lower protective shell 31.

[0022] Specifically, such as Figure 4 As shown, a connecting screw 36 is rotatably connected inside the connecting block 35. The bottom thread of the connecting screw 36 is connected inside the thread. A sealing gasket 37 is bonded to the inner side of the lower protective shell 31 and the upper protective shell 34. The inner side of the sealing gasket 37 contacts the outer side of the outer protective layer 23. The sealing gasket 37 is located on the outer side of the cable body 1 joint.

[0023] In this embodiment: by setting the joint protection structure 3, multiple protections are provided for the cable body 1 joint. The lower protective shell 31 and the upper protective shell 34 cooperate with each other. The fixing blocks 32 on both sides of the lower protective shell 31 and the connecting blocks 35 on both sides of the upper protective shell 34 are tightly connected by connecting screws 36, ensuring the overall stability of the joint protection structure 3. The sealing gasket 37 is bonded to the inner side of the lower protective shell 31 and the upper protective shell 34, closely adhering to the outer protective layer 23 and surrounding the cable body 1 joint, effectively preventing the intrusion of external moisture and corrosive substances, further enhancing the sealing effect, and providing all-round protection for the cable body 1 joint, greatly reducing the risk of joint corrosion, and effectively ensuring the connection stability of the cable body 1 joint, thereby ensuring stable and reliable power transmission, effectively reducing the situation of power transmission interruption or efficiency reduction caused by joint corrosion, and ensuring the safe and stable operation of the entire underground cable system.

[0024] Specifically, such as Figure 3 As shown, the inner protective layer 21 has a thickness of 3-5 mm and is directly wrapped around the outside of the cable body 1 using an extrusion molding process.

[0025] Specifically, such as Figure 3 As shown, the thickness of the anti-corrosion layer 22 is 2-4 mm, and it is tightly wound on the outside of the inner protective layer 21 by a winding method at a certain winding angle and tension.

[0026] In this embodiment: an inner protective layer 21 with a thickness of 3-5 mm is directly wrapped around the outside of the cable body 1 using an extrusion molding process. This thickness ensures the flexibility of the rubber material, allowing it to fit tightly against the cable body 1, effectively buffering external impacts and reducing the risk of damage to the cable body 1. It also provides sufficient protection. The anti-corrosion layer 22 has a thickness of 2-4 mm and is tightly wrapped around the outside of the inner protective layer 21 using a winding method at a specific winding angle and tension. The ceramic fiber layer and the nano anti-corrosion coating work together. The ceramic fiber layer, with its high temperature resistance and corrosion resistance, first blocks most of the corrosive substances in the soil, while the nano anti-corrosion coating further enhances the protective effect. Together, they resist the erosion of the cable body 1 by moisture, acid and alkali substances, and microorganisms in the soil. The inner protective layer 21 and the anti-corrosion layer 22 work together to provide basic and critical protection for the cable body 1, effectively extending the service life of the cable body 1 in complex underground environments.

[0027] Specifically, such as Figure 3 As shown, the outer protective layer 23 has a thickness of 5-8 mm, and it is processed by injection molding and set on the outside of the anti-corrosion layer 22.

[0028] Specifically, such as Figure 4 As shown, the lower protective shell 31 has connecting holes 4 on both sides of its top, and the upper protective shell 34 has connecting rods 5 fixedly connected to both sides of its bottom, with the connecting rods 5 inserted into the connecting holes 4.

[0029] In this embodiment: an outer protective layer 23 with a thickness of 5-8 mm is used and is set on the outside of the anti-corrosion layer 22 by injection molding. This thickness gives it sufficient mechanical strength to effectively resist external mechanical impact and compression, protecting the internal anti-corrosion layer 22 and the cable body 1. Its good weather resistance can also resist environmental factors such as ultraviolet rays and temperature changes. The connecting hole 4 and connecting rod 5 set on the protective shell are used to assist in positioning and ensure accurate docking of the upper protective shell 34 and the lower protective shell 31 during installation, thereby enhancing the overall stability.

[0030] Working principle: During the installation and use of corrosion-resistant underground cables, firstly, an inner protective layer 21, 3-5 mm thick, manufactured using an extrusion molding process, is tightly wrapped around the outside of the cable body 1. The flexibility of its rubber material allows it to perfectly conform to the cable body 1, effectively buffering external impacts such as soil compression and stone collisions during subsequent construction and use, reducing the possibility of damage to the cable body 1 due to external forces. It also provides a stable foundation for the subsequent installation of protective layers. Next, a 2-4 mm thick anti-corrosion layer 22 is tightly wound around the outside of the inner protective layer 21 using a winding method at a specific winding angle and tension. The ceramic fiber layer in the anti-corrosion layer 22 utilizes its own... The high-temperature and corrosion-resistant properties initially block corrosive factors such as moisture, acids, alkalis, and microorganisms in the soil. The nano-anti-corrosion coating further enhances the protective effect, filling any possible tiny gaps and making it difficult for corrosive substances to penetrate the defenses and erode the cable body 1. Subsequently, a 5-8 mm thick outer protective layer 23 is applied to the outside of the anti-corrosion layer 22 using an injection molding process. The outer protective layer 23 is made of high-strength corrosion-resistant plastic, which, with its strong mechanical strength, resists external mechanical impacts and compression, preventing damage to the cable body 1 caused by factors such as misoperation of construction machinery or movement and compression of underground objects. Its excellent weather resistance can effectively resist ultraviolet rays and temperature changes. To protect the internal anti-corrosion layer 22 and cable body 1 from environmental factors and extend the overall service life of cable body 1, when cable body 1 joints are involved, the lower protective shell 31 is located at the bottom front side of the outer protective layer 23, and threaded holes 33 are opened on the fixing blocks 32 on both sides of it. The upper protective shell 34 is located at the top front side of the protective layer and cooperates with the lower protective shell 31. The bottom of the connecting blocks 35 on both sides of the upper protective shell 34 contacts the top of the lower protective shell 31. The connecting screws 36 rotatably connected in the connecting blocks 35 are tightened with the threaded holes 33 of the fixing blocks 32 to achieve a tight connection between the upper and lower protective shells 31 and ensure overall stability. The connecting holes 4 on both sides of the top of the lower protective shell 31 are connected to the bottom of the upper protective shell 34. The connecting rods 5 on the sides cooperate with each other. During installation, the connecting rods 5 are inserted into the connecting holes 4 to assist in positioning and ensure accurate docking of the upper and lower protective shells 31, further enhancing stability. At the same time, the sealing gaskets 37 that are bonded to the inner sides of the lower protective shell 31 and the upper protective shell 34 tightly fit the outer protective layer 23 and surround the cable body 1 joint. On the basis of wrapping the joint with insulating material, it further isolates external moisture and corrosive substances, providing all-round protection for the cable body 1 joint, preventing joint corrosion, ensuring stable joint connection, ensuring stable and reliable power transmission, avoiding power transmission interruption or efficiency reduction due to joint problems, and ensuring the safe and stable operation of the entire underground cable system.

[0031] 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 corrosion-resistant underground cable laying protection structure, comprising a cable body (1), characterized in that: A surface protection structure (2) is provided on the outside of the cable body (1), and a joint protection structure (3) is provided on the outside of the surface protection structure (2). The joint protection structure (3) is located at the joint of the cable body (1). The surface protection structure (2) includes an inner protective layer (21), an anti-corrosion layer (22), and an outer protective layer (23) sequentially disposed on the outside of the cable body (1). The outer side of the outer protective layer (23) contacts the inner side of the joint protection structure (3). The inner protective layer (21) is made of rubber and has good flexibility. The anti-corrosion layer (22) is made of ceramic fiber layer and nano anti-corrosion coating. The outer protective layer (23) is made of high-strength corrosion-resistant plastic and has strong mechanical strength and weather resistance.

2. The corrosion-resistant underground cable laying protection structure according to claim 1, characterized in that: The joint protection structure (3) includes a lower protective shell (31) disposed on the front side of the bottom of the outer protective layer (23). Fixing blocks (32) are welded on the front and rear sides of both sides of the lower protective shell (31). A threaded hole (33) is provided on the top of the fixing block (32).

3. The corrosion-resistant underground cable laying protection structure according to claim 2, characterized in that: An upper protective shell (34) is provided on the front side of the top of the protective layer. The bottom of the upper protective shell (34) is in contact with the top of the lower protective shell (31). Connecting blocks (35) are welded to the front and rear sides of both sides of the upper protective shell (34). The bottom of the connecting blocks (35) is in contact with the top of the lower protective shell (31).

4. The corrosion-resistant underground cable laying protection structure according to claim 3, characterized in that: The connecting block (35) is rotatably connected to a connecting screw (36), the bottom of the connecting screw (36) is threaded into the inside of the thread, the lower protective shell (31) and the inner side of the upper protective shell (34) are bonded with a sealing gasket (37), the inner side of the sealing gasket (37) is in contact with the outer side of the outer protective layer (23), and the sealing gasket (37) is located on the outer side of the cable body (1) joint.

5. The corrosion-resistant underground cable laying protection structure according to claim 1, characterized in that: The inner protective layer (21) is 3-5 mm thick and is directly wrapped around the outside of the cable body (1) using an extrusion molding process.

6. The corrosion-resistant underground cable laying protection structure according to claim 1, characterized in that: The thickness of the anti-corrosion layer (22) is 2-4 mm, and it is tightly wound on the outside of the inner protective layer (21) by a winding method at a certain winding angle and tension.

7. The corrosion-resistant underground cable laying protection structure according to claim 1, characterized in that: The outer protective layer (23) has a thickness of 5-8 mm and is processed by injection molding and placed on the outside of the anti-corrosion layer (22).

8. The corrosion-resistant underground cable laying protection structure according to claim 3, characterized in that: The lower protective shell (31) has connecting holes (4) on both sides of its top, and the upper protective shell (34) has connecting rods (5) fixedly connected to both sides of its bottom. The connecting rods (5) are inserted into the connecting holes (4).

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