A high-strength cable and its installation method

Abstract

This invention relates to the field of cables, and specifically to a high-strength cable and its installation method. The high-strength cable includes a conductor, an inner spiral reinforcing layer, a steel mesh layer, and an outer spiral reinforcing layer, with inner and outer spiral holes and epoxy resin. The installation method involves first laying the high-strength cable, then filling it with epoxy resin. The high-strength cable forms a structure that provides all-around reinforcement and protection for the conductor, greatly improving its performance under high pressure and impact. It provides excellent protection for the conductor, effectively preventing deformation and damage under high pressure or impact conditions. This not only allows the cable to maintain good performance over a long period but also extends its service life and significantly improves its safety, thereby effectively reducing potential safety hazards. The installation method is very simple to operate, facilitating efficient installation and resulting in a high-strength, high-performance, long-life, highly safe cable with fewer safety hazards.

Description

Technical Field

[0001] This invention relates to the field of cables, and in particular to a high-strength cable and its installation method. Background Technology

[0002] Currently, for ease of cable winding and laying, flexible insulation is used to wrap the conductor. While flexible insulation meets the insulation requirements, its flexible nature, coupled with the limited thickness of existing flexible insulation, results in very limited compressive and impact resistance in current cables. Consequently, in environments with high pressure (such as underground installations or environments under heavy loads) or significant impacts (such as exposed installations or environments prone to impacts from personnel), the insulation is easily damaged, and the conductor deforms and is damaged. This not only reduces cable performance and lifespan but also compromises safety, posing significant safety hazards. Therefore, a redesign of the cable structure is essential. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and shortcomings, and to provide a high-strength cable and its installation method. This high-strength cable can form a structure that comprehensively strengthens and protects the conductor, greatly improving its performance in withstanding high pressure and impact. It provides excellent protection for the conductor, effectively preventing deformation and damage to the conductor under high pressure or impact. This not only allows the cable to maintain good performance over a long period, but also extends its service life and significantly improves its safety, thereby effectively reducing safety hazards. The installation method is very simple, which not only facilitates efficient installation but also helps to obtain a high-strength, high-performance, long-life, high-safety cable with fewer safety hazards.

[0004] The technical solution of this invention is implemented as follows:

[0005] A high-strength cable, characterized in that it comprises, from the inside out, a conductor, an inner insulation layer, an inner spiral reinforcing layer, a steel mesh layer, an outer spiral reinforcing layer, and an outer insulation layer, wherein both the inner and outer spiral reinforcing layers are composed of spiral steel bars with spiral gaps. The spiral gaps on the inner spiral reinforcing layer form an inner spiral hole between the steel mesh layer and the inner insulation layer, and the spiral gaps on the outer spiral reinforcing layer form an outer spiral hole between the steel mesh layer and the outer insulation layer. Both the inner and outer spiral holes are filled with curable epoxy resin. A first steel mesh and a second steel mesh are respectively provided on two outer sidewalls of the inner spiral reinforcing layer corresponding to the length direction of the conductor, and the first steel mesh... Both the first and second steel meshes extend along the spiral direction of the inner spiral reinforcing layer, and the first and second steel meshes overlap in the inner spiral holes. A third and fourth steel mesh are respectively provided on the two outer sidewalls of the outer spiral reinforcing layer corresponding to the length of the wire core, and both the third and fourth steel meshes extend along the spiral direction of the outer spiral reinforcing layer, overlapping in the outer spiral holes. An inner steel mesh is sandwiched between the inner spiral reinforcing layer and the inner insulation layer. The inner steel mesh is arranged in a cylindrical shape around the inner insulation layer. An outer steel mesh is sandwiched between the outer spiral reinforcing layer and the outer insulation layer. The outer steel mesh is arranged in a cylindrical shape around the outer spiral reinforcing layer.

[0006] Preferably, the spiral steel bar is a hollow spiral steel pipe.

[0007] Preferably, the outer wall of the inner spiral reinforcing layer is provided with a plurality of internal through holes that penetrate into its inner hole; the outer wall of the outer spiral reinforcing layer is provided with a plurality of external through holes that penetrate into its inner hole.

[0008] A cable installation method, characterized by including the following steps:

[0009] Prepare the above-mentioned high-strength cable without epoxy resin filling, liquid epoxy resin, curing agent, vacuum pump, filling pump, and sealing tape;

[0010] Laying high-strength cables;

[0011] Seal both ends of the high-strength cable with sealing tape to close the openings at both ends of the inner and outer spiral holes;

[0012] Connect the suction end of the air pump to one of the openings of the inner spiral hole, connect the discharge end of the liquid filling pump to one of the openings of the outer spiral hole, and position the suction end of the air pump and the discharge end of the liquid filling pump at the two ends of the high-strength cable respectively.

[0013] Liquid epoxy resin and curing agent are mixed to obtain curable epoxy resin;

[0014] A curable epoxy resin is pumped into the inner and outer spiral holes using a filling pump, while an air pump is used to remove air at the same time.

[0015] After the inner and outer spiral holes are filled with curable epoxy resin, stop the air pump and the filling pump.

[0016] Finally, wait for the epoxy resin mixture to cure.

[0017] The beneficial effects of this invention are as follows: The high-strength cable comprises, from the inside out, a conductor, an inner insulation layer, an inner spiral reinforcing layer, a steel mesh layer, an outer spiral reinforcing layer, and an outer insulation layer. Both the inner and outer spiral reinforcing layers are composed of spiral steel bars with spiral gaps. Furthermore, the spiral gaps on the inner spiral reinforcing layer form inner spiral holes between the steel mesh layer and the inner insulation layer, and the spiral gaps on the outer spiral reinforcing layer form outer spiral holes between the steel mesh layer and the outer insulation layer. Curable epoxy resin is filled into both the inner and outer spiral holes. Using spiral steel bars to construct the inner and outer spiral reinforcing layers not only provides multi-directional reinforcement but also ensures a very strong reinforcement effect. The steel mesh layer not only provides stable and reliable separation and restriction between the inner and outer spiral reinforcing layers but also strengthens the structure and facilitates the fusion of the epoxy resin in the inner and outer spiral holes. This allows the inner spiral reinforcing layer, steel mesh layer, and outer spiral reinforcing layer to be bound together into a single ultra-high-strength reinforcing layer through the cured epoxy resin, and this reinforcing layer surrounds the conductor. Therefore, this high-strength cable forms a structure that provides all-around reinforcement and protection for the conductor, greatly improving its ability to withstand high pressure and impacts. It provides excellent protection for the conductor, effectively preventing deformation and damage under high pressure or impact conditions. This not only ensures the cable maintains good performance over a long period but also extends its service life and significantly improves its safety, thereby effectively reducing potential safety hazards during cable use.

[0018] In this high-strength cable installation method, after the high-strength cable is laid, curable epoxy resin is injected into the inner and outer spiral holes. This not only facilitates the installation of the high-strength cable but also allows the cured epoxy resin to stably position the cable in the installation location. Furthermore, the epoxy resin, inner spiral reinforcement layer, steel mesh layer, and outer spiral reinforcement layer work together to provide comprehensive and effective protection for the conductor. This gives the high-strength cable extremely high compressive and impact resistance, thus ensuring long-term high performance and safety. This installation method is very simple to operate, facilitating efficient installation and resulting in high-strength, high-performance, long-life, high-safety cables with minimal safety hazards. The suction end of the air pump is connected to one opening of the inner spiral hole, and the discharge end of the liquid pump is connected to one opening of the outer spiral hole. The suction end of the air pump and the discharge end of the liquid pump are located at opposite ends of the high-strength cable. This allows the curing epoxy resin to quickly and fully fill the inner and outer spiral holes. This installation method can accurately and stably obtain high-strength cables, which can ensure that the high-strength cables have very high compressive and impact resistance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the high-strength cable in this invention.

[0020] Figure 2 For the present invention Figure 1 A magnified structural diagram of part A in the middle.

[0021] Figure 3 This is a three-dimensional structural diagram of the inner spiral reinforcing layer in this invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the outer spiral reinforcing layer in this invention.

[0023] Figure 5 This is a schematic diagram of the structure of the inner spiral reinforcing layer with an inner through hole in this invention.

[0024] Figure 6 This is a schematic diagram of the structure of the outer spiral reinforcing layer with an external through hole in this invention. Detailed Implementation Example

[0025] like Figure 1 and Figure 2As shown, the high-strength cable of the present invention includes, from the inside out, a conductor 1, an inner insulation layer 2, an inner spiral reinforcing layer 3, a steel mesh layer 4, an outer spiral reinforcing layer 5, and an outer insulation layer 6. Both the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5 are composed of spiral steel strips with spiral gaps. The spiral gaps on the inner spiral reinforcing layer 3 form an inner spiral hole 10 between the steel mesh layer 4 and the inner insulation layer 2. The spiral gaps on the outer spiral reinforcing layer 5 form an outer spiral hole 20 between the steel mesh layer 4 and the outer insulation layer 6. Both the inner spiral hole 10 and the outer spiral hole 20 are filled with curable epoxy resin 30.

[0026] This high-strength cable comprises, from the inside out, a conductor 1, an inner insulation layer 2, an inner spiral reinforcing layer 3, a steel mesh layer 4, an outer spiral reinforcing layer 5, and an outer insulation layer 6. Both the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5 are composed of spiral steel bars with spiral gaps. The spiral gaps on the inner spiral reinforcing layer 3 form inner spiral holes 10 between the steel mesh layer 4 and the inner insulation layer 2, and the spiral gaps on the outer spiral reinforcing layer 5 form outer spiral holes 20 between the steel mesh layer 4 and the outer insulation layer 6. Both the inner spiral holes 10 and the outer spiral holes 20 are filled with curable epoxy resin 30. The use of spiral steel bars to construct the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5 not only provides multi-directional reinforcement but also ensures a very strong reinforcement effect. The steel mesh layer 4 not only provides stable and reliable separation and restriction between the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5 but also strengthens the structure and facilitates the fusion of the epoxy resin 30 in the inner spiral holes 10 and the outer spiral holes 20. This allows the inner spiral reinforcing layer 3, the steel mesh layer 4, and the outer spiral reinforcing layer 5 to be integrated into a single ultra-high strength reinforcing layer through the cured epoxy resin 30, and this reinforcing layer surrounds the conductor 1. Therefore, this high-strength cable forms a structure that provides all-around reinforcement and protection for the conductor, greatly improving its performance under high pressure and impact. It provides excellent protection for the conductor, effectively preventing deformation and damage under high pressure or impact conditions. This not only ensures the cable maintains good performance over a long period but also extends its service life and significantly improves its safety, thereby effectively reducing potential safety hazards during cable use.

[0027] The filling with curable epoxy resin 30 not only provides excellent reinforcement but also excellent insulation, ensuring that the high-strength cable has very high insulation performance.

[0028] like Figures 1 to 3As shown, the inner spiral reinforcing layer 3 is provided with a first steel mesh 31 and a second steel mesh 32 on the two outer side walls corresponding to the length direction of the core 1, and the first steel mesh 31 and the second steel mesh 32 extend along the spiral direction of the inner spiral reinforcing layer 3, and the first steel mesh 31 and the second steel mesh 32 overlap in the inner spiral hole 10. The use of the first steel mesh 31 and the second steel mesh 32 not only ensures high structural strength but also provides better reinforcement for the inner spiral reinforcing layer 3. It also allows liquid epoxy resin 30 to pass through, filling the inner spiral hole 10. After the epoxy resin 30 cures, it encapsulates the first steel mesh 31 and the second steel mesh 32, enabling the overlapping meshes to mutually reinforce each other through the cured epoxy resin 30. This provides a more stable and reliable reinforcement within the inner spiral hole 10, further enhancing the reinforcement effect of the inner spiral reinforcing layer 3 and thus contributing to improved pressure and impact resistance of the high-strength cable.

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, the outer spiral reinforcing layer 5 is provided with a third steel mesh 51 and a fourth steel mesh 52 on the two outer side walls corresponding to the length direction of the core 1, and the third steel mesh 51 and the fourth steel mesh 52 extend along the spiral direction of the outer spiral reinforcing layer 5, and the third steel mesh 51 and the fourth steel mesh 52 overlap in the outer spiral hole 20. The use of the third steel mesh 51 and the fourth steel mesh 52 not only ensures high structural strength but also provides better reinforcement to the outer spiral reinforcing layer 5. They also allow liquid epoxy resin 30 to pass through, filling the outer spiral hole 20. After the epoxy resin 30 cures, it encapsulates the third steel mesh 51 and the fourth steel mesh 52, enabling the overlapping meshes to mutually reinforce each other through the cured epoxy resin 30. This provides a more stable and reliable reinforcement within the outer spiral hole 20, further enhancing the reinforcement effect of the outer spiral reinforcing layer 5 and thus contributing to improved pressure and impact resistance of the high-strength cable.

[0030] The first steel mesh 31 and the second steel mesh 32 are welded and fixed on the inner spiral reinforcing layer 3; the third steel mesh 51 and the fourth steel mesh 52 are welded and fixed on the outer spiral reinforcing layer 5. This not only facilitates manufacturing, but also makes the overall structure very stable and reliable.

[0031] like Figure 2As shown, an inner steel mesh 7 is sandwiched between the inner spiral reinforcing layer 3 and the inner insulation layer 2. The inner steel mesh 7 not only ensures high structural strength but also provides stable and reliable constraint, isolation, and reinforcement, ensuring the high stability of the inner insulation layer 2 and preventing adverse effects from the inner spiral reinforcing layer 3. Furthermore, the inner steel mesh 7 can be treated with epoxy resin 30, allowing the epoxy resin 30 to cure and form a reliable reinforcing layer on the inner steel mesh 7, thereby further improving the compression and impact resistance of the high-strength cable.

[0032] like Figure 1 and Figure 2 As shown, the inner steel mesh 7 is arranged in a cylindrical shape around the inner insulation layer 2. This allows the inner steel mesh 7 to exert a more comprehensive and effective reinforcing effect, thereby further improving the compression and impact resistance of the high-strength cable.

[0033] like Figure 2 As shown, an outer steel mesh 8 is sandwiched between the outer spiral reinforcing layer 5 and the outer insulation layer 6. The outer steel mesh 8 not only ensures high structural strength but also provides stable and reliable constraint, isolation, and reinforcement, ensuring the high stability of the outer insulation layer 6 and preventing adverse effects from the outer spiral reinforcing layer 5. Furthermore, the outer steel mesh 8 can be treated with epoxy resin 30, allowing the epoxy resin 30 to cure and form a reliable reinforcing layer on the outer steel mesh 8, thereby further improving the compression and impact resistance of the high-strength cable.

[0034] like Figure 1 and Figure 2 As shown, the outer steel mesh 8 is arranged in a cylindrical shape around the outer spiral reinforcing layer 5. This allows the outer steel mesh 8 to exert a more comprehensive and effective reinforcing effect, thereby further improving the compression and impact resistance of the high-strength cable.

[0035] like Figures 1 to 6 As shown, the spiral steel bar is a hollow spiral steel pipe. This not only facilitates the bending of the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5, but also reduces the amount of material used on the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5 when making the thick inner spiral hole 10 and the outer spiral hole 20. This can help improve the applicability of high-strength cables in the above-mentioned environment.

[0036] like Figure 5 and Figure 6As shown, the outer wall of the inner spiral reinforcing layer 3 has several through holes 33 extending into its inner hole; the outer wall of the outer spiral reinforcing layer 5 has several through holes 53 extending into its inner hole. This allows epoxy resin 30 to be guided into the inner hole of the inner spiral reinforcing layer 3 using the through holes 33, and into the inner hole of the outer spiral reinforcing layer 5 using the through holes 53; or, when epoxy resin 30 is filled into the inner holes of the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5, the epoxy resin is filled into the inner spiral hole 10 using the through holes 33, and into the outer spiral hole 20 using the through holes 53. This facilitates the filling of epoxy resin into the inner spiral reinforcing layer 3 and the outer spiral reinforcing layer 5, thereby further enhancing the strength of the high-strength cable structure and contributing to further improving the compression and impact resistance of the high-strength cable.

[0037] In the actual manufacturing process, the steel mesh layer 4, the first steel mesh 31, the second steel mesh 32, the third steel mesh 51, the inner steel mesh 7, and the outer steel mesh 8 are all woven from stainless steel wire strips with a large diameter (greater than 1.5 mm). This gives them high structural strength and durability, which helps to further improve the structural strength of the high-strength cable. Example

[0038] like Figure 1 and Figure 2 As shown, a cable installation method includes the following steps:

[0039] Prepare the following: high-strength cable without epoxy resin as described in Example 1, liquid epoxy resin, curing agent (the liquid epoxy resin and curing agent can be existing liquid epoxy resins and curing agents that can be cured to form hard epoxy resin after mixing, and their ratio can also be the existing ratio that can form hard epoxy resin after curing, so as to meet the needs of actual manufacturing and use), vacuum pump, filling pump, and sealing tape.

[0040] Laying high-strength cables;

[0041] Seal both ends of the high-strength cable with sealing tape to close the openings of the inner spiral hole 10 and the outer spiral hole 20 at both ends;

[0042] Connect the suction end of the air pump to one opening of the inner spiral hole 10, connect the discharge end of the liquid filling pump to one opening of the outer spiral hole 20, and position the suction end of the air pump and the discharge end of the liquid filling pump at the two ends of the high-strength cable respectively (the connection can be achieved by inserting a pipe connecting the inner spiral hole 10 and the suction end of the air pump into the sealing tape on the opening of the inner spiral hole 10, and by inserting a pipe connecting the outer spiral hole 20 and the discharge end of the liquid filling pump into the sealing tape on the opening of the outer spiral hole 20).

[0043] Liquid epoxy resin and curing agent are mixed to obtain curable epoxy resin 30;

[0044] The curable epoxy resin 30 is pumped into the inner spiral hole 10 and the outer spiral hole 20 using a filling pump, while air is simultaneously pumped out using an air pump.

[0045] After the inner spiral hole 10 and the outer spiral hole 20 are filled with curable epoxy resin 30, stop the air pump and the liquid filling pump.

[0046] Finally, wait for the epoxy resin mixture to cure.

[0047] In this high-strength cable installation method, after the high-strength cable is laid, curable epoxy resin 30 is filled into the inner spiral hole 10 and the outer spiral hole 20. This not only facilitates the installation of the high-strength cable, but also allows the cured epoxy resin 30 to stably position the high-strength cable in the installation location. Furthermore, the epoxy resin 30, the inner spiral reinforcing layer 3, the steel mesh layer 4, and the outer spiral reinforcing layer 5 work together to provide comprehensive and effective protection for the conductor 1. This gives the high-strength cable very high compressive and impact resistance, thus enabling the high-strength cable to maintain high performance and safety over a long period of time. This installation method is very simple to operate, which not only facilitates efficient installation, but also helps to obtain a high-strength, high-performance, long-life, high-safety cable with few safety hazards.

[0048] The suction end of the vacuum pump is connected to one opening of the inner spiral hole 10, and the discharge end of the filling pump is connected to one opening of the outer spiral hole 20. The suction end of the vacuum pump and the discharge end of the filling pump are positioned at opposite ends of the high-strength cable. This allows the curable epoxy resin 30 to quickly and fully fill the inner spiral hole 10 and the outer spiral hole 20. This installation method ensures accurate and stable installation of the high-strength cable, guaranteeing it possesses extremely high compressive and impact resistance.

[0049] The above embodiments are preferred embodiments of the present invention. Any structures similar to those of the present invention and any equivalent changes thereof should fall within the protection scope of the present invention.

Claims

1. A high-strength cable, characterized in that: The structure comprises, from the inside out, a wire core (1), an inner insulation layer (2), an inner spiral reinforcing layer (3), a steel mesh layer (4), an outer spiral reinforcing layer (5), and an outer insulation layer (6). Both the inner spiral reinforcing layer (3) and the outer spiral reinforcing layer (5) are composed of spiral steel strips with spiral gaps. The spiral gaps on the inner spiral reinforcing layer (3) form an inner spiral hole (10) between the steel mesh layer (4) and the inner insulation layer (2). The spiral gaps on the outer spiral reinforcing layer (5) form an outer spiral hole (20) between the steel mesh layer (4) and the outer insulation layer (6). Both the inner spiral hole (10) and the outer spiral hole (20) are filled with curable epoxy resin (30). A first steel mesh (31) and a second steel mesh (32) are respectively provided on the two outer sidewalls of the inner spiral reinforcing layer (3) corresponding to the length direction of the wire core (1), and the first steel mesh (31) and the second steel mesh (32) are aligned. All extend along the spiral direction of the inner spiral reinforcing layer (3), and the first steel mesh (31) and the second steel mesh (32) overlap in the inner spiral hole (10); the outer spiral reinforcing layer (5) is provided with a third steel mesh (51) and a fourth steel mesh (52) on the two outer side walls corresponding to the length direction of the wire core (1), and the third steel mesh (51) and the fourth steel mesh (52) extend along the spiral direction of the outer spiral reinforcing layer (5), and the third steel mesh (51) and the fourth steel mesh (52) overlap in the outer spiral hole (20); an inner steel mesh (7) is sandwiched between the inner spiral reinforcing layer (3) and the inner insulation layer (2); the inner steel mesh (7) is arranged in a cylindrical shape around the inner insulation layer (2); an outer steel mesh (8) is sandwiched between the outer spiral reinforcing layer (5) and the outer insulation layer (6); the outer steel mesh (8) is arranged in a cylindrical shape around the outer spiral reinforcing layer (5).

2. The high-strength cable according to claim 1, characterized in that: The spiral steel bar is a hollow spiral steel pipe.

3. The high-strength cable according to claim 2, characterized in that: The outer wall of the inner spiral reinforcing layer (3) is provided with a plurality of inner through holes (33) that penetrate into its inner hole; the outer wall of the outer spiral reinforcing layer (5) is provided with a plurality of outer through holes (53) that penetrate into its inner hole.

4. A cable installation method, characterized in that... Includes the following steps: Prepare any one of the following: a high-strength cable without epoxy resin filling, liquid epoxy resin, curing agent, vacuum pump, filling pump, and sealing tape, according to any one of claims 1-3. Laying high-strength cables; Seal both ends of the high-strength cable with sealing tape to close the openings at both ends of the inner spiral hole (10) and the outer spiral hole (20); Make the suction end of the air pump connect to one of the openings of the inner spiral hole (10), make the discharge end of the liquid pump connect to one of the openings of the outer spiral hole (20), and make the suction end of the air pump and the discharge end of the liquid pump located at the two ends of the high-strength cable respectively. Liquid epoxy resin and curing agent are mixed to obtain curable epoxy resin (30). Curable epoxy resin (30) is pumped into the inner spiral hole (10) and the outer spiral hole (20) using a filling pump, while air is pumped out at the same time. After the inner spiral hole (10) and the outer spiral hole (20) are filled with curable epoxy resin (30), stop the air pump and the filling pump. Finally, wait for the epoxy resin mixture to cure.

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