Anti-sheath aging cable

Abstract

A sheath aging resistant cable belongs to the technical field of cables and comprises a conductor assembly and a control wire core assembly, the conductor assembly and the control wire core assembly are sleeved with a sheath unit, the sheath unit comprises an anti-aging additive slow-release structure, and the anti-aging additive slow-release structure comprises an outer slow-release layer, an additive and an inner slow-release layer. The cable is provided with the anti-aging additive slow-release structure, continuously provides protection for the sheath, prolongs the duration of the anti-aging effect, avoids the problem that the conventional protection mode cannot continuously perform the anti-aging effect on the cable sheath in the later period, and is longer in protection time for the cable sheath compared with the conventional mode, and the service life of the cable sheath is prolonged. By arranging the nano sheath, the mechanical property, heat resistance and aging resistance of the sheath material can be enhanced, so that the sheath material can better resist the influence of external stress and environmental factors, mastoid salient points can form a layered structure with a rough surface on the outer wall of the cable, and the effects of soaking corrosion and the like of water in the natural environment on the outer sheath are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and particularly relates to an anti-sheath aging cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, usually composed of several or several groups of wires. The problem of sheath aging of cables has always been a key factor affecting the service life and performance of cables. In the actual use process of cables in the prior art, they often face many situations that are likely to cause aging. On the one hand, the cable is exposed to the natural environment for a long time and is affected by factors such as ultraviolet radiation, temperature changes, moisture and oxygen in the atmosphere. The sheath material will gradually undergo chemical reactions such as oxidation and degradation, thus losing its original mechanical properties and insulation properties. On the other hand, in some special industrial environments, the cable may come into contact with corrosive media such as chemical substances and oil stains, accelerating the aging process of the sheath. In addition, the cable may also be subjected to external forces such as extrusion, stretching and friction during installation and use, which will also damage the sheath, further reducing the anti-aging ability of the cable and affecting the normal operation and safety of the cable.

[0003] In the related technology (publication number: CN210777884U), an anti-aging high-performance composite sheath rubber-insulated subway cable is disclosed, which includes a fireproof sheath. Lightweight magnesium oxide particles are inlaid in the inner circle of the fireproof sheath. An insulating sheath is arranged in the inner circle of the fireproof sheath and within the lightweight magnesium oxide particles. A copper conductor is inlaid in the inner circle of the insulating sheath. A shielding sheath is wrapped around the outer circle of the fireproof sheath. An anti-aging sheath is wrapped around the outer circle of the shielding sheath. A PE film is wrapped around the outer circle of the anti-aging sheath. By using the anti-aging vulcanized rubber sheath and the anti-aging silicone rubber sheath in combination, the anti-aging property of the subway cable is improved, so that the service life of the subway cable is longer. It solves the problem that the subway cable is prone to aging and damage during use due to the lack of anti-aging protection, resulting in a short service life of the subway cable, and greatly extends the service life of the subway cable.

[0004] However, in the above technology, the method of protecting the cable by adding multiple sheaths is such that the sheath is prone to deterioration and cracking under the influence of factors such as the natural environment, and its protection for the cable will weaken over time, and it cannot continuously play an anti-aging role for the cable sheath. Summary of the Utility Model

[0005] In view of the problems existing in the prior art that under normal operations, the sheath is prone to deterioration and cracking under the influence of factors such as the natural environment, its protection for the cable will weaken over time, and it cannot continuously play an anti-aging role for the cable sheath, etc., the present utility model provides an anti-sheath-aging cable, which is provided with an anti-aging additive slow-release structure that can slowly release anti-aging additives, continuously provide protection for the sheath, extend the duration of the anti-aging effect, and avoid the problem that the conventional protection method cannot continuously play an anti-aging role for the cable sheath in the later stage. Compared with the traditional method, it has a longer protection time for the cable sheath and a better anti-aging effect. By setting a nano-sheath, the mechanical properties, heat resistance and aging resistance of the sheath material can be enhanced, the strength and toughness of the sheath can be improved, making it more resistant to external stress and environmental factors, and extending the service life of the cable. In addition, the papilla bumps can form a rough surface layer structure on the outer wall of the cable, reducing the soaking and corrosion of water in the natural environment on the outer sheath, and further improving the strength of the cable sheath. The specific technical solution is as follows:

[0006] An anti-sheath-aging cable includes a conductor assembly and a control core wire assembly. There are three groups of the conductor assemblies, and the three groups of the conductor assemblies are circumferentially equidistantly arranged. There are three groups of the control core wire assemblies, and the three groups of the control core wire assemblies are circumferentially equidistantly arranged. And each group of the control core wire assemblies is arranged between two adjacent conductor assemblies. The conductor assembly and the control core wire assembly are externally sleeved with a sheath unit. The sheath unit includes an anti-aging additive slow-release structure. The anti-aging additive slow-release structure includes an outer slow-release layer, an additive and an inner slow-release layer;

[0007] Wherein, the additive is arranged between the outer slow-release layer and the inner slow-release layer.

[0008] In the above technical solution, a nano-sheath is arranged outside the anti-aging additive slow-release structure. The nano-sheath is one of a nano-silica layer and a carbon nanotube or a combination of both.

[0009] In the above technical solution, the outer slow-release layer is set as a unidirectional transmission structure layer, and its transmission direction is from the inner cavity of the additive to the direction of the nano-sheath.

[0010] In the above technical solution, each group of the conductor assemblies includes a main core wire insulation layer and a main core wire conductor. The main core wire conductor is arranged inside the main core wire insulation layer.

[0011] In the above technical solution, each set of the control core wire assemblies includes an interlayer sheath, a control core wire insulating layer, and a control core wire conductor. The control core wire insulating layer is sleeved outside the control core wire conductor, and the interlayer sheath is sleeved outside the control core wire insulating layer. There are three sets of the control core wire insulating layer and the control core wire conductor, and the three sets of the control core wire conductors and the control core wire insulating layer are arranged at equal intervals in the circumferential direction inside the interlayer sheath.

[0012] In the above technical solution, the sheath unit further includes an outer sheath, an inner sheath, and a wrapping layer, and the outer sheath, the nano-sheath, the anti-aging additive slow-release structure, the inner sheath, and the wrapping layer are arranged in sequence from outside to inside.

[0013] In the above technical solution, a plurality of papillary bumps are arranged at equal intervals in the circumferential direction outside the wrapping layer, and the papillary bumps are set in a papillary shape.

[0014] In the above technical solution, a strengthening core sheath is arranged in the middle of the three sets of conductor assemblies, and a steel wire rope strengthening core is arranged inside the strengthening core sheath.

[0015] In the above technical solution, the inner slow-release layer is set as a unidirectional transmission structure layer, and its transmission direction is from the additive inner cavity to the direction of the inner sheath.

[0016] In the above technical solution, the gap between adjacent papillary bumps is smaller than the radius of the papillary bumps.

[0017] An anti-sheath aging cable of the present utility model has the following beneficial effects compared with the prior art:

[0018] First, for the problem that under normal operation, the sheath is prone to deterioration and cracking under the influence of factors such as the natural environment, and its protection for the cable will weaken over time and cannot continuously play an anti-aging role for the cable sheath, the present utility model is provided with an anti-aging additive slow-release structure. By setting an outer slow-release layer, an additive, and an inner slow-release layer, over time, the anti-aging additive can be slowly released to continuously provide protection for the sheath, extend the duration of the anti-aging effect, and avoid the problem that the conventional protection method cannot continuously play an anti-aging role for the cable sheath in the later stage. Compared with the traditional method, the protection time for the cable sheath is longer and the anti-aging effect is better;

[0019] Second, the present utility model is also provided with a nano-sheath, which can enhance the mechanical properties, heat resistance, and aging resistance of the sheath material, improve the strength and toughness of the sheath, make it more resistant to external stress and environmental factors, and extend the service life of the cable;

[0020] 3. The utility model plays a role through the combined action of the anti-aging additive slow-release structure and the nano-sheath. Compared with the traditional way of only setting a sheathing, it can further improve the protection performance of the sheathing for the cable.

[0021] 4. The utility model is provided with papillary bumps, forming a rough layer structure on the outer wall of the cable. This makes the actual contact area between the cable surface and water droplets very small, making it difficult for water droplets to truly wet the surface of the outer sheath, reducing the soaking and corrosion effects of water in the natural environment on the outer sheath, and further improving the strength of the cable sheath.

[0022] 5. The gap between adjacent papillary bumps of the utility model is smaller than the radius of the papillary bumps, which can prevent dust accumulation between two adjacent papillary bumps, keep the outer sheath clean, and avoid the corrosion effect on the outer sheath caused by long-term dust scaling on the surface of the outer sheath.

[0023] In summary, the utility model is provided with an anti-aging additive slow-release structure, which can slowly release anti-aging additives, continuously provide protection for the sheathing, extend the duration of the anti-aging effect, and avoid the problem that the conventional protection method cannot continuously play an anti-aging role for the cable sheathing in the later stage. Compared with the traditional method, the protection time for the cable sheathing is longer, and the anti-aging effect is better. By setting a nano-sheath, the mechanical properties, heat resistance and aging resistance of the sheathing material can be enhanced, the strength and toughness of the sheathing can be improved, making it more resistant to external stress and environmental factors, and extending the service life of the cable. In addition, the papillary bumps can form a rough layer structure on the outer wall of the cable, reducing the soaking and corrosion effects of water in the natural environment on the outer sheath, and further improving the strength of the cable sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic cross-sectional structure diagram of the outer sheath of the utility model;

[0025] Figure 2 is Figure 1 an enlarged view of part A of

[0026] Figures 1 to 2 In [figure number], 1. Outer sheath, 2. Nano-sheath, 3. Anti-aging additive slow-release structure, 3001. Outer slow-release layer, 3002. Additive, 3003. Inner slow-release layer, 4. Inner sheath, 5. Wrapping layer, 6. Main core insulation layer, 7. Main core conductor, 8. Interlayer sheath, 9. Control core insulation layer, 10. Control core conductor, 11. Reinforcing core sheath, 12. Steel wire rope reinforcing core, 13. Papillary bump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further illustrates the utility model in conjunction with specific implementation cases and attached Figures 1 to 2 drawings, but the utility model is not limited to these embodiments.

[0028] Refer to Figures 1 to 2 As shown, an anti-sheath aging cable includes a conductor assembly and a control core assembly. There are three groups of conductor assemblies, and the three groups of conductor assemblies are circumferentially equidistantly arranged. There are three groups of control core assemblies, and the three groups of control core assemblies are circumferentially equidistantly arranged. And each group of control core assemblies is arranged between two adjacent conductor assemblies. An outer sheath unit is sleeved outside the conductor assembly and the control core assembly. The outer sheath unit includes an anti-aging additive slow-release structure 3, which can slowly release anti-aging additives, continuously provide protection for the outer sheath, extend the duration of the anti-aging effect, and avoid the problem that the conventional protection method cannot continuously play an anti-aging role on the cable outer sheath in the later stage. Compared with the traditional method, the protection time for the cable outer sheath is longer and the anti-aging effect is better. The anti-aging additive slow-release structure 3 includes an outer slow-release layer 3001, an additive 3002, and an inner slow-release layer 3003; wherein, the additive 3002 is arranged between the outer slow-release layer 3001 and the inner slow-release layer 3003. By setting the outer slow-release layer 3001, the additive 3002, and the inner slow-release layer 3003, with the passage of time, the anti-aging additives can be slowly released to continuously provide protection for the outer sheath.

[0029] Mainly refer to Figure 1 As shown, a nano-sheath 2 is arranged outside the anti-aging additive slow-release structure 3. The nano-sheath 2 is one of a nano-silica layer and a carbon nanotube or a combination of both. In this embodiment, the nano-sheath 2 is a carbon nanotube. Through the nano-sheath 2, the mechanical properties, heat resistance, and aging resistance of the sheath material can be enhanced, the strength and toughness of the sheath can be improved, making it more resistant to the influence of external stresses and environmental factors, and extending the service life of the cable.

[0030] Mainly refer to Figure 2 As shown, the outer slow-release layer 3001 is set as a unidirectional transmission structure layer, and its transmission direction is from the inner cavity of the additive 3002 to the direction of the nano-sheath 2. This ensures that the anti-aging additives can accurately pass through the outer slow-release layer 3001 and be transmitted to the nano-sheath 2, prompting the anti-aging additives to act on the nano-sheath 2 and forming protection for the cable from the outside.

[0031] Mainly refer to Figure 1As shown, each group of conductor assemblies includes a main core insulation layer 6 and a main core conductor 7. The main core conductor 7 is disposed inside the main core insulation layer 6. The main core insulation layer 6 isolates the main core conductor from the external environment and other conductors, preventing current leakage and short circuits, ensuring that the current in the main core conductor 7 can be safely transmitted in a specified path, avoiding safety accidents caused by electric leakage, and also preventing external electromagnetic fields from interfering with the current transmission in the main core conductor. The main core conductor 7 is the main channel for transmitting current in the cable. It is responsible for delivering electrical energy from the power source to the electrical equipment. Its material usually has good electrical conductivity, such as copper, aluminum, etc., to ensure efficient and stable current transmission.

[0032] For main reference Figure 1 As shown, each group of control core assemblies includes an interlayer sheath 8, a control core insulation layer 9, and a control core conductor 10. The control core insulation layer 9 is sleeved outside the control core conductor 10, and the interlayer sheath 8 is sleeved outside the control core insulation layer 9. There are three sets of the control core insulation layer 9 and the control core conductor 10, and the three sets of control core conductors 10 and control core insulation layers 9 are circumferentially equidistantly arranged inside the interlayer sheath 8. The interlayer sheath 8 further protects the control core insulation layer 9 and the control core conductor 10 inside the cable, enhancing the mechanical strength and abrasion resistance of the cable. It can prevent the above structures from being damaged by external mechanical forces such as extrusion, pulling, and friction during installation and use, and can also resist chemical substance erosion to a certain extent. The control core insulation layer 9 is mainly used to transmit control signals or low-current signals. It is connected to relevant control devices to monitor, control, and adjust the operating state of the cable. For example, it transmits the signal of a temperature sensor and controls the heating system of the cable. The control core conductor 10 protects the control core insulation layer 9 from corrosion and mechanical damage in the external environment. At the same time, it also helps to fix the positions of the three sets of control core insulation layers 9, ensuring that the control core insulation layer 9 can effectively play the role of enhancing the mechanical strength of the cable.

[0033] For main reference Figure 1 As shown, the sheath unit further includes an outer sheath 1, an inner sheath 4, and a wrapping layer 5. The outer sheath 1, the nano sheath 2, the anti-aging additive slow-release structure 3, the inner sheath 4, and the wrapping layer 5 are arranged in sequence from outside to inside, thereby forming a multi-level sheath structure for the cable, which has higher strength and superimposed anti-aging performance compared with the traditional single-level sheath structure, increasing the service life of the cable.

[0034] For main reference Figure 2As shown in the figure, a number of papillary bumps 13 are circumferentially and equidistantly arranged on the outside of the wrapping layer 5, and the papillary bumps 13 are set in the shape of papillae, forming a layered structure with a rough surface on the outer wall of the cable. This makes the actual contact area between the cable surface and water droplets very small, making it difficult for the water droplets to truly wet the surface of the outer sheath 1, reducing the effect of water in the natural environment on soaking and corroding the outer sheath 1, and further improving the strength of the cable sheath. Moreover, the gap between adjacent papillary bumps 13 is smaller than the radius of the papillary bumps 13, which can prevent dust accumulation between two adjacent papillary bumps 13, keep the outer sheath 1 clean, and avoid the corrosion of the outer sheath 1 caused by long-term dust scaling on the surface of the outer sheath 1.

[0035] For main reference Figure 1 As shown in the figure, a strengthening core sheath 11 is arranged in the middle of the three groups of conductor assemblies. A wire rope strengthening core 12 is arranged inside the strengthening core sheath 11. The wire rope strengthening core 12 can significantly improve the tensile strength of the cable, prevent the cable from breaking due to tension during laying and use, especially in the cases of long-distance laying, vertical laying or when the cable needs to bear large external forces. The wire rope strengthening core can ensure the structural stability and safety of the cable.

[0036] Specifically, the inner slow-release layer 3003 is set as a unidirectional transmission structure layer, and its transmission direction is from the inner cavity of the additive 3002 to the direction of the inner sheath 4, so as to ensure the additive 3002. Thus, it ensures that the anti-aging additive can accurately pass through the inner slow-release layer 3003 and transmit to the inner sheath 4, prompting the anti-aging additive to play a role in the inner sheath 4 and forming further protection for the cable from the outside.

[0037] It should be noted that in this application, the wrapping layer 5, the main core insulation layer 6, the main core conductor 7, and the interlayer sheath 8 are common structures of the existing cable itself. The wrapping layer 5 plays a role in protecting the internal structure and preventing external environmental factors (such as moisture, dust, mechanical damage, etc.) from invading the inside of the cable. It can enhance the overall mechanical strength and sealing performance of the cable, and at the same time, it also helps to fix the internal cable structure and prevent it from shifting or loosening during use. There will be no excessive elaboration on the above existing components here.

[0038] The utility model is provided with an anti-aging additive slow-release structure, which can slowly release anti-aging additives, continuously provide protection for the sheath, extend the duration of the anti-aging effect, and avoid the problem that the conventional protection method cannot continuously play an anti-aging role on the cable sheath in the later stage. Compared with the traditional method, the protection time for the cable sheath is longer and the anti-aging effect is better. By setting the nano-sheath 2, the mechanical properties, heat resistance and aging resistance of the sheath material can be enhanced, the strength and toughness of the sheath can be improved, making it more resistant to the influence of external stress and environmental factors, and extending the service life of the cable. In addition, the papilla bumps 13 can form a rough layer structure on the outer wall of the cable, reducing the soaking and corrosion of water in the natural environment on the outer sheath 1, and further improving the strength of the cable sheath.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-sheath aging cable, comprising a conductor assembly and a control core assembly, characterized in that, There are three sets of the conductor assemblies, and the three sets of the conductor assemblies are circumferentially equidistantly arranged. There are three sets of the control core wire assemblies, and the three sets of the control core wire assemblies are circumferentially equidistantly arranged. And each set of the control core wire assemblies is arranged between two adjacent sets of the conductor assemblies. An outer sheath unit is sleeved outside the conductor assemblies and the control core wire assemblies. The outer sheath unit includes an anti-aging additive slow-release structure (3). The anti-aging additive slow-release structure (3) includes an outer slow-release layer (3001), an additive (3002), and an inner slow-release layer (3003); Wherein, the additive (3002) is arranged between the outer slow-release layer (3001) and the inner slow-release layer (3003).

2. The anti-sheath aging cable according to claim 1, wherein: A nano sheath (2) is arranged outside the anti-aging additive slow-release structure (3). The nano sheath (2) is one of a nano-silica layer and a carbon nanotube or a combination of both.

3. The anti-sheath aging cable according to claim 2, characterized in that: The outer slow-release layer (3001) is arranged as a unidirectional transmission structure layer, and its transmission direction is from the inner cavity of the additive (3002) to the direction of the nano sheath (2).

4. The anti-sheath aging cable according to claim 1, wherein: Each set of the conductor assemblies includes a main core wire insulation layer (6) and a main core wire conductor (7). The main core wire conductor (7) is arranged inside the main core wire insulation layer (6).

5. An anti-sheath aging cable according to claim 1, characterized in that: Each set of the control core wire assemblies includes an interlayer sheath (8), a control core wire insulation layer (9), and a control core wire conductor (10). The control core wire insulation layer (9) is sleeved outside the control core wire conductor (10). The interlayer sheath (8) is sleeved outside the control core wire insulation layer (9). There are three sets of the control core wire insulation layer (9) and the control core wire conductor (10), and the three sets of the control core wire conductors (10) and the control core wire insulation layer (9) are circumferentially equidistantly arranged inside the interlayer sheath (8).

6. The anti-sheath aging cable according to claim 1, characterized in that: The outer sheath unit further includes an outer sheath (1), an inner sheath (4), and a wrapping layer (5). And the outer sheath (1), the nano sheath (2), the anti-aging additive slow-release structure (3), the inner sheath (4), and the wrapping layer (5) are arranged in sequence from outside to inside.

7. An anti-sheath aging cable according to claim 6, characterized in that: A plurality of nipple bumps (13) are circumferentially equidistantly arranged outside the wrapping layer (5), and the nipple bumps (13) are arranged in a nipple shape.

8. The anti-sheath aging cable according to claim 6, wherein: A reinforcing core sheath (11) is arranged in the middle of the three sets of the conductor assemblies, and a steel wire rope reinforcing core (12) is arranged inside the reinforcing core sheath (11).

9. The anti-sheath aging cable according to claim 6, wherein: The inner slow-release layer (3003) is arranged as a unidirectional transmission structure layer, and its transmission direction is from the inner cavity of the additive (3002) to the direction of the inner sheath (4).

10. A cable resistant to sheath aging according to claim 7, characterized in that: The gap between adjacent nipple bumps (13) is smaller than the radius of the nipple bumps (13).

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