Post-curing cable and installation method thereof

Abstract

The invention relates to the field of cables, in particular to a post-curing cable and an installation method thereof.The post-curing cable comprises a cable core body, an inner insulating layer, an outer insulating layer and a spiral strip, and a spiral containing groove used for pouring curable epoxy resin is formed in the post-curing cable. The mounting method of the post-cured cable comprises the step of filling the spiral containing groove of the laid post-cured cable with the epoxy resin mixed liquid capable of being cured. The post-curing agent not only can be beneficial to keeping high insulation and use performance of the cable for a long time, but also can be beneficial to greatly prolonging the service life of the cable, and can be beneficial to greatly improving the use safety of the cable, thereby being beneficial to greatly reducing the potential safety hazard of use; according to the installation method, the hard insulation wrapping layer can be manufactured very conveniently and rapidly, so that an excellent hard insulation wrapping layer can be obtained, the cable can have very strong large pressure resistance and large impact resistance through installation, and potential safety hazards in use can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of cables, in particular to a post-curing cable and an installation method thereof. Background Art

[0002] At present, in order to facilitate the winding management and laying of cables, soft insulation is used to wrap the wire core. Although soft insulation can meet the insulation wrapping requirements, due to its soft characteristics and the limited thickness of existing soft insulation, the compression and impact resistance of existing cables are very limited. In this way, when there is a large pressure (such as underground installation) or a large impact (such as exposed installation, and an environment prone to impact due to human activities) in the installation and use of such cables, it is easy for the insulation to break and the wire core to deform and be damaged, which will not only reduce the performance of the cable, but also reduce the service life of the cable and reduce the safety of the cable, which will pose a great safety hazard. Therefore, it is very necessary to redesign the structure of the cable. Summary of the invention

[0003] The object of the present invention is to solve the above-mentioned problems and shortcomings, and to provide a post-curing cable and an installation method thereof, wherein the post-curing cable can be conducive to forming a hard insulating sheath after installation, which can provide all-round protection, thereby being conducive to greatly improving the cable's resistance to high pressure and high impact, and further being conducive to greatly reducing the probability of damage, deformation and damage during the use of the cable, which can not only help the cable to maintain high insulation and use performance for a long time, but also help to greatly extend the service life of the cable, and can help to greatly improve the safety of the cable use, which can help to greatly reduce the potential safety hazards in use; the installation method can very conveniently and quickly produce a hard insulating sheath, thereby being conducive to obtaining an excellent hard insulating sheath, such installation can make the cable have a very strong ability to resist high pressure and high impact, and can greatly reduce the probability of damage, deformation and damage during the use of the cable, which can not only keep the cable High performance for a long time, but also greatly extend the service life of the cable, and can greatly improve the safety of the cable use, which can greatly reduce the potential safety hazards in use.

[0004] The technical solution of the present invention is achieved in this way: A post-curing cable is characterized in that it includes a wire core, an inner insulating layer, an outer insulating layer, and a spiral strip, wherein the inner insulating layer is coated on the wire core, the outer insulating layer is arranged around the inner insulating layer, the spiral strip is spirally arranged between the outer insulating layer and the inner insulating layer, and the spiral strip is arranged around the inner insulating layer, and the spiral gap of the spiral strip constitutes a spiral receiving groove for pouring curable epoxy resin.

[0005] Preferably, an inner steel wire mesh cylinder is sleeved on the inner insulating layer, and the spiral strips are wound on the inner steel wire mesh cylinder.

[0006] Preferably, an inner isolation layer is arranged between the inner steel wire mesh tube and the inner insulating layer, and a plurality of inner convex strips are arranged on the surface of the inner isolation layer facing the inner steel wire mesh tube, and the inner convex strips are evenly arranged around the axial center of the inner steel wire mesh tube, and the length direction of each inner convex strip is in the same direction as the axial direction of the inner steel wire mesh tube.

[0007] Preferably, an outer steel wire mesh cylinder is arranged on the inner side of the outer insulating layer, and the spiral strips are located inside the outer steel wire mesh cylinder.

[0008] Preferably, an outer isolation layer is arranged between the outer steel mesh tube and the outer insulating layer, and a plurality of outer convex strips are arranged on the surface of the outer isolation layer facing the outer steel mesh tube, and the outer convex strips are evenly arranged around the axial center of the outer steel mesh tube, and the length direction of each outer convex strip is in the same direction as the axial direction of the outer steel mesh tube.

[0009] Preferably, the spiral strip is a tube strip bent in a spiral shape.

[0010] Preferably, a plurality of through holes penetrating into the inner hole of the spiral strip are formed on the outer wall of the spiral strip.

[0011] Preferably, the spiral strip is a stainless steel spiral strip.

[0012] A method for installing the post-cured cable is characterized by comprising the following steps: Prepare post-curing cables, liquid epoxy resin, curing agent, vacuum pump, filling pump, and sealing tape; Curing cables after laying; Seal the notches of the spiral receiving grooves at both ends of the post-curing cable with sealing tape; The air suction end of the vacuum pump and the liquid discharge end of the liquid filling pump are respectively connected to the two end ports of the spiral receiving groove; Mixing liquid epoxy resin and curing agent to obtain a curable epoxy resin mixed liquid; The curable epoxy resin mixture is pumped into the spiral storage tank by using a filling pump, and the air is simultaneously pumped out by using an air pump; After the spiral storage tank is filled with the curable epoxy resin mixture, the vacuum pump and the filling pump are stopped; Finally, wait for the epoxy resin mixture to cure.

[0013] The beneficial effects of the present invention are as follows: On the post-cured cable, the spiral strip is spirally arranged between the outer insulating layer and the inner insulating layer, which not only meets the normal winding management and laying requirements of the cable, but also can use the spiral strip to strengthen the cable, and can use the spiral strip to effectively separate the outer insulating layer from the inner insulating layer, so as to facilitate the formation of a stable spiral storage groove. The spiral gap of the spiral strip is used to form a spiral storage groove for pouring curable epoxy resin. This is not only conducive to comprehensive and effective filling of the curable epoxy resin, but also enables the cured epoxy resin to achieve a high-strength protective effect together with the spiral strip, and enables the cured epoxy resin to exist around the wire core body. Therefore, the post-cured cable can help to form a hard insulating sheath (the insulating sheath is composed of cured epoxy resin) after installation, which can provide all-round protection, thereby greatly improving the cable's ability to resist high pressure and high impact, and further greatly reducing the probability of breakage, deformation and damage to the cable during use. This can not only help the cable maintain high insulation and performance for a long time, but also help to greatly extend the service life of the cable, and can greatly improve the safety of cable use, which can greatly reduce safety hazards in use.

[0014] This installation method can conveniently and quickly fill the spiral storage groove with a curable epoxy resin mixture, so that after the epoxy resin mixture is cured, it can not only accurately and stably position the cable, but also play an extremely comprehensive and effective insulation protection role. Therefore, this installation method can easily and quickly produce a hard insulation wrapping layer, so as to be conducive to obtaining an excellent hard insulation wrapping layer. Such installation can make the cable have a very strong ability to resist large pressure and large impact, and can greatly reduce the probability of damage, deformation and damage during the use of the cable. This can not only keep the cable at a high performance for a long time, but also greatly extend the service life of the cable, and can greatly improve the safety of the cable in use, which can greatly reduce the potential safety hazards in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the post-cured cable in the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the end face direction of the post-cured cable in the present invention.

[0017] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of part A. DETAILED DESCRIPTION Example

[0018] like Figures 1 to 3As shown, a post-curing cable described in the present invention includes a core body 1, an inner insulation layer 2, an outer insulation layer 3, and a spiral strip 4, wherein the inner insulation layer 2 is coated on the core body 1, the outer insulation layer 3 is arranged around the inner insulation layer 2, the spiral strip 4 is spirally arranged between the outer insulation layer 3 and the inner insulation layer 2, and the spiral strip 4 is arranged around the inner insulation layer 2, and the spiral gap of the spiral strip 4 constitutes a spiral receiving groove 10 for pouring curable epoxy resin.

[0019] On the post-cured cable, the spiral strip 4 is spirally arranged between the outer insulation layer 3 and the inner insulation layer 2, which not only meets the normal winding management and laying requirements of the cable, but also can utilize the spiral strip 4 to strengthen the cable, and can utilize the spiral strip 4 to effectively separate the outer insulation layer 3 and the inner insulation layer 2, thereby facilitating the formation of a stable spiral storage groove 10.

[0020] The spiral receiving groove 10 for pouring curable epoxy resin is formed by the spiral gap of the spiral strip 4. This is not only conducive to the comprehensive and effective filling of the curable epoxy resin, but also enables the cured epoxy resin to achieve a high-strength protective effect together with the spiral strip 4, and enables the cured epoxy resin to exist around the wire core body 1.

[0021] Therefore, the post-cured cable can help to form a hard insulating sheath (the insulating sheath is composed of cured epoxy resin) after installation, which can provide all-round protection, thereby greatly improving the cable's ability to resist high pressure and high impact, and further greatly reducing the probability of breakage, deformation and damage to the cable during use. This can not only help the cable maintain high insulation and performance for a long time, but also help to greatly extend the service life of the cable, and can greatly improve the safety of cable use, which can greatly reduce safety hazards in use.

[0022] like Figures 1 to 3 As shown, an inner steel wire mesh cylinder 5 is sleeved on the inner insulating layer 2, and the spiral strip 4 is wound on the inner steel wire mesh cylinder 5. The inner steel wire mesh cylinder 5 will not affect the normal winding management and laying requirements of the cable, but also can make the inner steel wire mesh cylinder 5 be wrapped by the cured epoxy resin, which can make use of the inner steel wire mesh cylinder 5 and the cured epoxy resin to play a mutual reinforcement role, thereby helping to further improve the strength of the insulating wrapping layer, and further helping to further improve the reliability and applicability of the post-cured cable.

[0023] like Figures 1 to 3As shown, an inner isolation layer 6 is provided between the inner steel mesh cylinder 5 and the inner insulating layer 2, and a plurality of inner convex strips 61 are provided on the surface of the inner isolation layer 6 facing the inner steel mesh cylinder 5, and each inner convex strip 61 is evenly arranged around the axial center of the inner steel mesh cylinder 5, and the length direction of each inner convex strip 61 is in the same direction as the axial direction of the inner steel mesh cylinder 5. The inner isolation layer 6 can separate the inner insulating layer 2 from the cured epoxy resin, thereby ensuring that the inner insulating layer 2 exerts a stable insulation effect. The inner convex strips 61 are provided to allow contact with the inner wall of the inner steel mesh tube 5, which can reduce the contact area of ​​the inner wall of the inner steel mesh tube 5; and the gaps between adjacent inner convex strips 61 can be filled with curable epoxy resin; in this way, the curable epoxy resin can wrap the inner steel mesh tube 5 more comprehensively and effectively, thereby being conducive to a more reliable reinforcement effect; and the epoxy resin filled between adjacent inner convex strips 61 can form axially extending convex strips after curing, which can also play an extremely effective reinforcement role; this can more effectively improve the structural strength of the insulating wrapping layer, thereby playing a more stable and reliable reinforcement protection role, and further help to further improve the reliability and applicability of the post-cured cable.

[0024] like Figures 1 to 3 As shown, an outer steel mesh cylinder 7 is provided on the inner side of the outer insulating layer 3, and the spiral strip 4 is located inside the outer steel mesh cylinder 7. The provision of the outer steel mesh cylinder 7 will not only not affect the normal winding management and laying requirements of the cable, but also enable the outer steel mesh cylinder 7 to be wrapped by the cured epoxy resin, which can utilize the outer steel mesh cylinder 7 and the cured epoxy resin to play a mutual reinforcement role, thereby helping to further improve the strength of the insulating wrapping layer, and further helping to further improve the reliability and applicability of the post-cured cable.

[0025] like Figures 1 to 3As shown, an outer isolation layer 8 is provided between the outer steel mesh cylinder 7 and the outer insulating layer 3, and a plurality of outer convex strips 81 are provided on the surface of the outer isolation layer 8 facing the outer steel mesh cylinder 7, and the outer convex strips 81 are evenly arranged around the axial center of the outer steel mesh cylinder 7, and the length direction of the outer convex strips 81 is in the same direction as the axial direction of the outer steel mesh cylinder 7. The outer isolation layer 8 can be provided to separate the outer insulating layer 3 from the cured epoxy resin, thereby ensuring that the outer insulating layer 3 exerts a stable insulating effect. The outer convex strips 81 are provided to contact the outer wall of the outer steel mesh tube 7, so that the contact area of ​​the outer wall of the outer steel mesh tube 7 can be reduced; and the gaps between adjacent outer convex strips 81 can be filled with curable epoxy resin; in this way, the curable epoxy resin can have a more comprehensive and effective wrapping effect on the outer steel mesh tube 7, thereby being conducive to a more reliable reinforcement effect; and the epoxy resin filled between adjacent outer convex strips 81 can form axially extending convex strips after curing, which can also play an extremely effective reinforcement role; this can more effectively improve the structural strength of the insulating wrapping layer, thereby playing a more stable and reliable reinforcement protection role, and further help to further improve the reliability and applicability of the post-cured cable.

[0026] like Figure 3 As shown, the inner isolation layer 6 and each inner convex strip 61 are an integral insulating soft plastic structure; the outer isolation layer 8 and each outer convex strip 81 are an integral insulating soft plastic structure; this can meet the actual manufacturing and use requirements.

[0027] like Figures 1 to 3 As shown, the spiral strip 4 is a tube strip bent in a spiral shape. This not only facilitates the bending of the spiral strip 4, but also reduces the amount of material used on the spiral strip 4 when manufacturing a thick spiral receiving groove 10, which is conducive to improving the applicability of the post-cured cable in the above environment.

[0028] like Figure 2 and Figure 3 As shown, a plurality of through holes 42 penetrating into the inner hole 41 of the spiral strip 4 are formed on the outer wall of the spiral strip 4. The through holes 42 can introduce the curable epoxy resin into the inner hole 41 of the spiral strip 4, so that the structure of the cured epoxy resin and the spiral strip 4 can be more stable, thereby further improving the structural strength, and further helping to further improve the reliability and applicability of the post-cured cable.

[0029] The spiral strip 4 is a stainless steel spiral strip, which can make the spiral strip 4 have high structural strength and durability, thereby helping to further improve the structural strength of the post-cured cable, and further improve the reliability and applicability of the post-cured cable. Example

[0030] A method for installing a post-cured cable according to Embodiment 1 comprises the following steps: Prepare post-curing cables, liquid epoxy resin, curing agent (the liquid epoxy resin and curing agent can adopt existing liquid epoxy resin and curing agent that can form a hard epoxy resin body after curing, and their proportion can also adopt existing proportion that can form a hard epoxy resin body after curing, so that the needs of actual manufacturing and use can be met), vacuum pump, filling pump, and sealing tape; Curing cables after laying; The notches of the spiral receiving grooves 10 at both ends of the post-curing cable are sealed with sealing tape; The air suction end of the vacuum pump and the liquid discharge end of the liquid filling pump are respectively connected to the two end ports of the spiral receiving groove 10 (a pipe can be inserted into the port of the spiral receiving groove 10, and the pipe is connected to the air suction end of the vacuum pump or the liquid discharge end of the liquid filling pump to achieve the above-mentioned connection); Mixing liquid epoxy resin and curing agent to obtain a curable epoxy resin mixed liquid; The curable epoxy resin mixture is pumped into the spiral storage tank 10 by using a filling pump, and the air is simultaneously pumped out by using an air pump; After the spiral receiving groove 10 is filled with the curable epoxy resin mixture, the vacuum pump and the filling pump are stopped; Finally, wait for the epoxy resin mixture to cure.

[0031] The installation method can conveniently and quickly fill the spiral storage groove 10 with a curable epoxy resin mixture, so that after the epoxy resin mixture is cured, it can not only accurately and stably position the cable, but also play an extremely comprehensive and effective insulation protection role. Therefore, the installation method can conveniently and quickly produce a hard insulation wrapping layer, so as to be conducive to obtaining an excellent hard insulation wrapping layer. Such installation can make the cable have a very strong ability to resist large pressure and large impact, and can greatly reduce the probability of damage, deformation and damage during the use of the cable. This can not only keep the cable at a high performance for a long time, but also greatly extend the service life of the cable, and can greatly improve the safety of the cable in use, which can greatly reduce the potential safety hazards in use.

[0032] The above embodiments are preferred embodiments of the present invention. All structures similar to the present invention and equivalent changes made thereto should fall within the protection scope of the present invention.

Claims

1. A post-cured cable, characterized in that: The invention comprises a wire core (1), an inner insulating layer (2), an outer insulating layer (3), and a spiral strip (4), wherein the inner insulating layer (2) is coated on the wire core (1), the outer insulating layer (3) is arranged around the inner insulating layer (2), the spiral strip (4) is arranged in a spiral shape between the outer insulating layer (3) and the inner insulating layer (2), and the spiral strip (4) is arranged around the inner insulating layer (2), and the spiral gap of the spiral strip (4) constitutes a spiral receiving groove (10) for pouring curable epoxy resin.

2. The post-cured cable according to claim 1, characterized in that: An inner steel wire mesh cylinder (5) is sleeved on the inner insulating layer (2), and the spiral strips (4) are wound around the inner steel wire mesh cylinder (5).

3. The post-cured cable according to claim 2, characterized in that: An inner insulating layer (6) is provided between the inner steel mesh cylinder (5) and the inner insulating layer (2); a plurality of inner convex strips (61) are provided on the surface of the inner insulating layer (6) facing the inner steel mesh cylinder (5); the inner convex strips (61) are evenly arranged around the axial center of the inner steel mesh cylinder (5); and the length direction of the inner convex strips (61) is in the same direction as the axial direction of the inner steel mesh cylinder (5).

4. The post-cured cable according to claim 1, characterized in that: An outer steel wire mesh cylinder (7) is arranged on the inner side of the outer insulating layer (3), and the spiral strips (4) are located inside the outer steel wire mesh cylinder (7).

5. The post-cured cable according to claim 4, characterized in that: An outer insulating layer (8) is provided between the outer steel mesh cylinder (7) and the outer insulating layer (3); a plurality of outer convex strips (81) are provided on the surface of the outer insulating layer (8) facing the outer steel mesh cylinder (7); the outer convex strips (81) are evenly arranged around the axial center of the outer steel mesh cylinder (7); and the length direction of the outer convex strips (81) is in the same direction as the axial direction of the outer steel mesh cylinder (7).

6. The post-cured cable according to claim 1, characterized in that: The spiral strip (4) is a tube strip bent in a spiral shape.

7. The post-cured cable according to claim 6, characterized in that: A plurality of through holes (42) penetrating into the inner hole (41) of the spiral strip (4) are provided on the outer wall of the spiral strip (4).

8. The post-cured cable according to any one of claims 1 to 7, characterized in that: The spiral strip (4) is a stainless steel spiral strip.

9. A method for installing a post-cured cable according to any one of claims 1 to 8, characterized in that The following steps are involved: Prepare post-curing cables, liquid epoxy resin, curing agent, vacuum pump, filling pump, and sealing tape; Curing cables after laying; Using sealing tape to seal the notches of the spiral receiving grooves (10) at both ends of the post-curing cable; The air suction end of the air extraction pump and the liquid discharge end of the liquid filling pump are respectively connected to the two end ports of the spiral receiving groove (10); Mixing liquid epoxy resin and curing agent to obtain a curable epoxy resin mixed liquid; Using a liquid filling pump to pump the curable epoxy resin mixture into the spiral storage tank (10), and at the same time using an air pump to pump air; After the spiral receiving groove (10) is filled with the curable epoxy resin mixture, the vacuum pump and the filling pump are stopped; Finally, wait for the epoxy resin mixture to cure.

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