Ceramifiable silicone rubber insulated high temperature resistant medium voltage cable

Abstract

The utility model provides a kind of ceramic silicon rubber insulation high-temperature-resistant medium-voltage cable, it is related to cable technical field, including: conducting transmission layer, insulating heat-resistant layer, shielding buffer layer and protective armor layer;The conducting transmission layer includes center conductor, inner shielding layer and semi-conductive water-blocking layer;The insulating heat-resistant layer includes base insulating layer, ceramic silicon rubber layer and reinforced insulating layer;The shielding buffer layer includes outer shielding layer, elastic buffer layer and copper band shielding layer;The protective armor layer includes inner sheath, steel-tape armoring layer, outer sheath and wear-resistant protective layer.The utility model can be stable in medium-voltage power transmission Conducting, effective insulation, reliable shielding, resist a variety of external factors at the same time, applicable to high temperature and various complex environments, guarantee power transmission safety, stable and durable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable. Background Technology

[0002] Medium-voltage cables, as a key component of power transmission systems, are widely used in urban power distribution networks, industrial parks, high-rise buildings, and other scenarios, undertaking the important task of transmitting power from substations to various electrical equipment.

[0003] However, existing medium-voltage cables still have the following problems: 1. The insulation layer of existing medium-voltage cables is made of ordinary rubber or plastic. Under high-temperature conditions, these materials are prone to aging and softening, leading to a decrease in insulation performance and even insulation breakdown, causing power failures. They cannot meet the power transmission requirements of high-temperature environments such as metallurgy and chemical industry; 2. During the laying and use process, cables are often affected by various factors such as external mechanical impact, moisture intrusion, chemical corrosion, and friction loss. Existing medium-voltage cables are difficult to effectively resist these external interferences, which not only affect the stability of power transmission but also shorten the service life of the cables, increase maintenance costs, and create safety hazards. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model embodiment is to provide a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable, which can solve the technical problems of poor insulation performance and weak protection capability at high temperatures in the prior art.

[0005] This utility model embodiment proposes a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable, comprising: a conductive transmission layer, an insulating heat-resistant layer, a shielding buffer layer, and a protective armor layer;

[0006] The conductive transport layer includes a central conductor, an inner shielding layer, and a semi-conductive resistive water layer;

[0007] The insulating and heat-resistant layer includes a base insulating layer, a ceramicized silicone rubber layer, and a reinforcing insulating layer;

[0008] The shielding buffer layer includes an outer shielding layer, an elastic buffer layer, and a copper strip shielding layer;

[0009] The protective armor layer includes an inner sheath, a steel strip armor layer, an outer sheath, and a wear-resistant protective layer.

[0010] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0011] In this embodiment of the invention, the central conductor ensures efficient transmission of medium-voltage power and maintains the stability of power delivery; the inner shielding layer balances the electric field distribution, reduces the concentration of the electric field on the conductor surface, and lowers the probability of partial discharge; the semiconducting resistive water layer prevents moisture intrusion, avoids conductor corrosion due to moisture, and extends the conductor's service life; the base insulation layer performs basic insulation functions and prevents power leakage; the ceramicized silicone rubber layer exhibits outstanding high-temperature resistance, maintaining good insulation in high-temperature environments and ensuring the cable operates normally under high-temperature conditions; the reinforced insulation layer enhances the overall insulation strength, strengthens the cable's ability to withstand external voltage surges, and reduces the risk of insulation breakdown; the outer shielding layer shields the cable's internal electric field from interference with the outside world, while also preventing external electromagnetic signals from affecting the cable's internal power transmission; and the elastic buffer layer absorbs the energy generated by external vibrations and impacts, reducing the impact on the cable's internal structure. The cable's internal structure is designed to prevent damage and maintain stability. The copper tape shielding layer enhances the shielding effect and serves as a fault current path, promptly discharging current in the event of a cable fault to ensure electrical safety. The inner sheath seals and protects the internal structure, preventing impurities from entering. The steel tape armor layer improves the cable's mechanical strength, enhancing its ability to withstand external tensile and compressive forces, making the cable less prone to damage during laying and use. The outer sheath has excellent environmental resistance, resisting external chemicals and ultraviolet radiation. The wear-resistant protective layer reduces cable loss caused by friction during laying and use, extending the overall service life of the cable. The synergistic effect of each layer enables the cable to provide stable conductivity, effective insulation, and reliable shielding in medium-voltage power transmission, while resisting the influence of various external factors. It is suitable for high-temperature and various complex environments, ensuring safe, stable, and long-lasting power transmission. Attached Figure Description

[0012] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention. Throughout the drawings, the same reference numerals denote the same components. Obviously, the drawings described below are merely some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable provided in this embodiment of the utility model.

[0014] Figure 2 This is a schematic diagram of the conductive transmission layer of a ceramicized silicone rubber insulated high-temperature and medium-voltage cable provided in this embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the insulation and heat-resistant layer of a ceramicized silicone rubber insulated high-temperature medium-voltage cable provided in this embodiment of the utility model.

[0016] Figure 4This is a schematic diagram of the structure of the shielding buffer layer of a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable provided in this embodiment of the utility model.

[0017] Figure 5 This is a schematic diagram of the protective armor layer of a ceramicized silicone rubber insulated high-temperature medium-voltage cable provided in this embodiment of the utility model.

[0018] Explanation of reference numerals in the attached diagram: 1-Conductive transmission layer; 2-Insulating and heat-resistant layer; 3-Shielding buffer layer; 4-Protective armor layer; 11-Center conductor; 12-Inner shielding layer; 13-Semi-conductive resistive water layer; 21-Base insulation layer; 22-Ceramicized silicone rubber layer; 23-Reinforcing insulation layer; 31-Outer shielding layer; 32-Elastic buffer layer; 33-Copper tape shielding layer; 41-Inner sheath; 42-Steel tape armor layer; 43-Outer sheath; 44-Abrasion-resistant protective layer. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0020] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this utility model.

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention.

[0022] Reference manual attached Figures 1 to 5 The diagram shows a structural schematic of a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable provided in an embodiment of the present invention.

[0023] The present invention provides a structure for a ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable, comprising: a conductive transmission layer 1, an insulating heat-resistant layer 2, a shielding buffer layer 3, and a protective armor layer 4.

[0024] The conductive transport layer 1 includes a central conductor 11, an inner shielding layer 12, and a semiconducting resistive water layer 13.

[0025] The insulating and heat-resistant layer 2 includes a base insulating layer 21, a ceramicized silicone rubber layer 22, and a reinforcing insulating layer 23.

[0026] The shielding buffer layer 3 includes an outer shielding layer 31, an elastic buffer layer 32, and a copper strip shielding layer 33.

[0027] The protective armor layer 4 includes an inner sheath 41, a steel belt armor layer 42, an outer sheath 43, and a wear-resistant protective layer 44.

[0028] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0029] In this embodiment of the invention, the central conductor 11 ensures efficient transmission of medium-voltage power and maintains the stability of power transmission; the inner shielding layer 12 balances the electric field distribution, reduces the concentration of electric field on the conductor surface, and lowers the probability of partial discharge; the semiconducting resistive water layer 13 blocks moisture intrusion, prevents conductor corrosion due to moisture, and extends the service life of the conductor; the base insulation layer 21 performs basic insulation functions and prevents power leakage; the ceramicized silicone rubber layer 22 has outstanding high-temperature resistance, maintaining good insulation in high-temperature environments and ensuring the normal operation of the cable under high-temperature conditions; the reinforcing insulation layer 23 improves the overall insulation strength, enhances the cable's ability to resist external voltage surges, and reduces the risk of insulation breakdown; the outer shielding layer 31 shields the cable's internal electric field from interference with the outside world, while preventing external electromagnetic signals from affecting the internal power transmission of the cable; and the elastic buffer layer 32 absorbs the energy generated by external vibrations and impacts, reducing the impact on the cable's internal power transmission. The cable's internal structure is designed to maintain stability. The copper tape shielding layer 33 enhances the shielding effect and serves as a fault current path, promptly discharging current when a fault occurs to ensure electrical safety. The inner sheath 41 seals and protects the internal structure, preventing impurities from entering. The steel tape armor layer 42 improves the cable's mechanical strength, enhancing its ability to resist external tensile and compressive forces, making the cable less prone to damage during laying and use. The outer sheath 43 has excellent environmental resistance, resisting external chemicals and ultraviolet radiation. The wear-resistant protective layer 44 reduces cable loss due to friction during laying and use, extending the overall service life of the cable. The synergistic effect of each layer enables the cable to conduct electricity stably, provide effective insulation, and reliably shield in medium-voltage power transmission, while resisting the influence of various external factors. It is suitable for high-temperature and various complex environments, ensuring safe, stable, and long-lasting power transmission.

[0030] In one possible implementation, the inner shielding layer 12 is wrapped around the outer surface of the central conductor 11, and the semiconducting resistive water layer 13 is wrapped around the outer surface of the inner shielding layer 12.

[0031] In this embodiment of the invention, the inner shielding layer 12 is in direct contact with the central conductor 11, which can better balance the electric field. The semiconducting resistive water layer 13 tightly wraps the inner shielding layer 12, which can form a continuous waterproof barrier and improve the moisture-proof effect.

[0032] In one possible implementation, the base insulation layer 21 is wrapped around the outer surface of the semiconducting resistive water layer 13, the ceramicized silicone rubber layer 22 is wrapped around the outer surface of the base insulation layer 21, and the reinforcing insulation layer 23 is wrapped around the outer surface of the ceramicized silicone rubber layer 22.

[0033] In this embodiment of the utility model, the base insulation layer 21 is close to the conductive transmission layer 1 to strengthen the basic insulation, the ceramicized silicone rubber layer 22 plays a core role in high temperature resistance in the center, and the outer insulation layer 23 further enhances the overall insulation reliability.

[0034] In one possible implementation, the outer shielding layer 31 is wrapped around the outer surface of the reinforcing insulation layer 23, the elastic buffer layer 32 is wrapped around the outer surface of the outer shielding layer 31, and the copper strip shielding layer 33 is wrapped around the outer surface of the elastic buffer layer 32.

[0035] In this embodiment of the utility model, the outer shielding layer 31 is adjacent to the insulating layer to enhance the initial shielding effect, the elastic buffer layer 32 is in the middle to buffer without affecting the shielding continuity, and the copper strip shielding layer 33 forms a solid shielding shell on the outside, improving the synergy between shielding and protection.

[0036] In one possible implementation, the inner sheath 41 is wrapped around the outer surface of the copper strip shielding layer 33, the steel strip armor layer 42 is wrapped around the outer surface of the inner sheath 41, the outer sheath 43 is wrapped around the outer surface of the steel strip armor layer 42, and the wear-resistant protective layer 44 is wrapped around the outer surface of the outer sheath 43.

[0037] In this embodiment of the utility model, the inner sheath 41 is a sealing and shielding layer to prevent damage, the steel strip armor layer 42 is centrally located to strengthen mechanical protection, and the outer sheath 43 and the wear-resistant protective layer 44 form a double environmental protection on the outside, thereby improving the overall damage resistance.

[0038] In one possible implementation, the center conductor 11 is made of multiple strands of metal wire twisted together.

[0039] In this embodiment of the invention, the twisting of multiple metal wires increases the flexibility of the central conductor 11, making it easier to bend and lay the cable. At the same time, it increases the surface area of ​​the conductor, reduces the skin effect, and ensures conductivity efficiency.

[0040] In one possible implementation, the steel strip armor layer 42 is formed by spirally winding several steel strips.

[0041] In this embodiment of the utility model, the spiral winding of the steel strip gives the steel strip armor layer 42 both high strength and flexibility, which improves the cable's tensile and compressive strength without affecting the cable's bending performance, thus adapting to complex laying environments.

[0042] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the preferred embodiments; however, those skilled in the art can fully understand this utility model without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ceramicized silicone rubber insulated high-temperature resistant medium-voltage cable, characterized in that, include: Conductive transport layer, insulating and heat-resistant layer, shielding buffer layer and protective armor layer; The conductive transport layer includes a central conductor, an inner shielding layer, and a semi-conductive resistive water layer; The insulating and heat-resistant layer includes a base insulating layer, a ceramicized silicone rubber layer, and a reinforcing insulating layer; The shielding buffer layer includes an outer shielding layer, an elastic buffer layer, and a copper strip shielding layer; The protective armor layer includes an inner sheath, a steel strip armor layer, an outer sheath, and a wear-resistant protective layer.

2. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The inner shielding layer is wrapped around the outer surface of the central conductor, and the semiconducting resistive water layer is wrapped around the outer surface of the inner shielding layer.

3. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The base insulation layer is wrapped around the outer surface of the semiconducting resistive water layer, the ceramicized silicone rubber layer is wrapped around the outer surface of the base insulation layer, and the reinforcing insulation layer is wrapped around the outer surface of the ceramicized silicone rubber layer.

4. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The outer shielding layer is wrapped around the outer surface of the reinforcing insulation layer, the elastic buffer layer is wrapped around the outer surface of the outer shielding layer, and the copper strip shielding layer is wrapped around the outer surface of the elastic buffer layer.

5. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The inner sheath wraps around the outer surface of the copper strip shielding layer, the steel strip armor layer wraps around the outer surface of the inner sheath, the outer sheath wraps around the outer surface of the steel strip armor layer, and the wear-resistant protective layer wraps around the outer surface of the outer sheath.

6. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The central conductor is made of multiple strands of metal wire twisted together.

7. The ceramicized silicone rubber insulated high-temperature medium-voltage cable according to claim 1, characterized in that, The steel strip armor layer is formed by spirally winding several steel strips.

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