Coaxial organic signal cable
By installing multi-layer shielding structures on cables used in nuclear power plants, the problems of electromagnetic interference and signal leakage are solved, achieving stable signal transmission and environmental adaptability, thus meeting the special needs of nuclear power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HUAGUANG CABLE & ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional nuclear power plant cables are susceptible to electromagnetic interference and signal leakage during signal transmission, and cannot maintain signal integrity and accuracy in high-radiation environments.
A multi-layer shielding structure is set on the outside of the silver-plated copper conductor, including an insulation layer, a sheath layer, an isolation layer, a braided shielding layer and an armor layer. Semi-conductive adhesive and nano-conductive particle coating are applied to the outside to form a multi-layered interlaced shielding, which enhances signal stability.
It effectively reduces electromagnetic interference, prevents signal leakage, maintains signal integrity and accuracy, and improves signal transmission stability. It also features low smoke, halogen-free, flame retardant, high temperature resistant, and radiation resistant properties, making it suitable for the harsh environment of nuclear power plants.
Smart Images
Figure CN224263817U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a coaxial organic signal cable, belonging to the field of nuclear power plant detection technology. Background Technology
[0002] Cables, as carriers of electricity, are used in all aspects of human life and production. However, due to the special nature of the environment in which nuclear power plants operate, cables must not only possess the power transmission characteristics of ordinary cables, but also exhibit properties such as low smoke, halogen-free operation, flame retardancy, fire resistance, high temperature resistance, and radiation resistance. Preventing signal interference in the actual working environment has always been a challenging problem for traditional nuclear power plant cables. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a coaxial organic signal cable that can reduce external electromagnetic interference, prevent signal leakage, maintain signal integrity and accuracy, and shield internally generated electromagnetic waves from interfering with signal transmission, thereby further improving the stability of signal transmission.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a coaxial organic signal cable, comprising: a silver-plated copper conductor and an insulation layer and a sheath layer coaxially disposed on the outside of the silver-plated copper conductor; a first isolation layer and a second isolation layer are respectively disposed between the insulation layer and the sheath layer covering the outside of the silver-plated copper conductor; a first braided shielding layer and a second braided shielding layer are respectively disposed between the first braided shielding layer and the second braided shielding layer, and between the second braided shielding layer and the second isolation layer; a semi-conductive adhesive layer is coated on the outer surface of the conductor; the insulation layer is tightly wrapped around the outside of the conductor through the semi-conductive adhesive layer; a semi-conductive wrapping layer is tightly disposed on the outside of the insulation layer; the semi-conductive wrapping layer obtained by overlapping and wrapping further comprises: a substrate layer and a nano-conductive particle coating sprayed on at least one side of the substrate layer.
[0005] The following are further improvements to the above technical solution:
[0006] 1. In the above scheme, the semiconductive adhesive layer is obtained by curing semiconductive adhesive coated on the outer surface of the conductor.
[0007] 2. In the above scheme, the substrate layer is a PET substrate layer or a nylon substrate layer.
[0008] 3. In the above scheme, the nano-conductive particle coating is a nano-carbon black particle coating, a nano-hollow carbon tube coating, or a nano-silver particle coating.
[0009] 4. In the above scheme, both the first isolation layer and the second isolation layer are formed by polyimide tape overlapping and wrapping.
[0010] 5. In the above scheme, the first braided shielding layer and the second braided shielding layer are both braided from silver-plated copper wires with a diameter of 0.16 mm to 0.20 mm and the braiding density is not less than 90%.
[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0012] This utility model relates to a coaxial organic signal cable. Between the insulation layer and the sheath layer covering the silver-plated copper conductor, a first isolation layer and a second isolation layer are sequentially arranged. Between the first and second isolation layers, a first braided shielding layer and a second braided shielding layer are sequentially arranged. Between the first and second braided shielding layers, and between the second braided shielding layer and the second isolation layer, a first armor layer and a second armor layer are respectively arranged. A semi-conductive adhesive layer is coated on the outer surface of the conductor. The insulation layer is tightly wrapped around the outer surface of the conductor through this semi-conductive adhesive layer. A semi-conductive wrapping layer is tightly arranged on the outer surface of the insulation layer. The semi-conductive wrapping layer, obtained by overlapping and wrapping, further includes a substrate layer and a nano-conductive particle coating sprayed on at least one side of the substrate layer. By staggering multiple layers of shielding, it can ensure a small overall outer diameter and excellent bending performance to adapt to the harsh and confined installation environment of nuclear power plant sites, while also reducing electromagnetic interference, preventing signal leakage, improving cable durability, and maintaining the integrity and accuracy of signal transmission. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the coaxial organic signal cable of this utility model;
[0014] Appendix Figure 2 This is a schematic cross-sectional view of the semiconducting strip in the coaxial organic signal cable of this utility model.
[0015] In the above figures: 1. Silver-plated copper conductor; 2. Insulating layer; 3. First isolation layer; 4. First braided shielding layer; 5. First armor layer; 6. Second braided shielding layer; 7. Second armor layer; 8. Semi-conductive adhesive layer; 9. Semi-conductive wrapping layer; 91. Substrate layer; 92. Nano-conductive particle coating; 10. Second isolation layer; 11. Sheath layer. Detailed Implementation
[0016] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.
[0017] Example 1: A coaxial organic signal cable, comprising: a silver-plated copper conductor 1 and an insulation layer 2 and a sheath layer 11 coaxially disposed on the outside of the silver-plated copper conductor 1. A first isolation layer 3 and a second isolation layer 10 are disposed sequentially between the insulation layer 2 and the sheath layer 11 covering the outside of the silver-plated copper conductor 1. A first braided shielding layer 4 and a second braided shielding layer 6 are disposed sequentially between the first isolation layer 3 and the second isolation layer 10. A first armor layer 5 and a second armor layer 7 are disposed between the first braided shielding layer 4 and the second braided shielding layer 6, and between the second braided shielding layer 6 and the second isolation layer 10, respectively. A semi-conductive adhesive layer 8 is coated on the outer surface of the conductor 1. The insulation layer 2 is tightly wrapped around the outside of the conductor 1 through the semi-conductive adhesive layer 8. A semi-conductive wrapping layer 9 is tightly disposed on the outer side of the insulation layer 2. The semi-conductive strip of the semi-conductive wrapping layer 9 obtained by overlapping and wrapping further comprises: a substrate layer 91 and a nano-conductive particle coating 92 sprayed on at least one side of the substrate layer 91.
[0018] The semiconductive adhesive layer 8 is obtained by curing the semiconductive adhesive coated on the outer surface of the conductor 1; the substrate layer 91 is a PET substrate layer; and the nano-conductive particle coating 92 is a nano-carbon black particle coating.
[0019] The first isolation layer 3 and the second isolation layer 10 are both formed by polyimide tape overlapping and wrapping; the first braided shielding layer 4 and the second braided shielding layer 6 are both woven from silver-plated copper wire with a diameter of 0.17mm and a braiding density of not less than 90%.
[0020] Example 2: A coaxial organic signal cable, comprising: a silver-plated copper conductor 1 and an insulation layer 2 and a sheath layer 11 coaxially disposed on the outside of the silver-plated copper conductor 1. A first isolation layer 3 and a second isolation layer 10 are disposed sequentially between the insulation layer 2 and the sheath layer 11 covering the outside of the silver-plated copper conductor 1. A first braided shielding layer 4 and a second braided shielding layer 6 are disposed sequentially between the first isolation layer 3 and the second isolation layer 10. A first armor layer 5 and a second armor layer 7 are disposed between the first braided shielding layer 4 and the second braided shielding layer 6, and between the second braided shielding layer 6 and the second isolation layer 10, respectively. A semi-conductive adhesive layer 8 is coated on the outer surface of the conductor 1. The insulation layer 2 is tightly wrapped around the outside of the conductor 1 through the semi-conductive adhesive layer 8. A semi-conductive wrapping layer 9 is tightly disposed on the outer side of the insulation layer 2. The semi-conductive strip of the semi-conductive wrapping layer 9 obtained by overlapping and wrapping further comprises: a substrate layer 91 and a nano-conductive particle coating 92 sprayed on at least one side of the substrate layer 91.
[0021] The aforementioned substrate layer 91 is a nylon substrate layer;
[0022] The aforementioned nano-conductive particle coating 92 is a nano-hollow carbon nanotube coating;
[0023] Both the first braided shielding layer 4 and the second braided shielding layer 6 are woven from silver-plated copper wire with a diameter of 0.18 mm and the braiding density is not less than 90%.
[0024] The first armor layer 5 and the second armor layer 7 are both formed by wrapping soft magnetic nickel-based alloy strips; the silver-plated copper conductor 1 is formed by twisting several silver-plated copper wires; the insulation layer 2 is an irradiated cross-linked polyethylene insulation layer; and the sheath layer 11 is an irradiated cross-linked polyolefin sheath layer.
[0025] The advantages of this utility model patent are:
[0026] (1) The product has good electrical performance and electromagnetic interference resistance.
[0027] (2) The product is flame retardant, low smoke, halogen-free and waterproof, and has excellent radiation resistance. It can be used in areas with strong radiation such as nuclear power plants and can withstand a cumulative radiation dose of 375kGy.
[0028] (3) The cable has a small overall outer diameter, excellent bending performance, and stable structure, making it easy to install and lay in the harsh and confined space of the nuclear power plant site.
[0029] (4) Minimum operating temperature of the cable: -30 to 90℃. Normal service life is 60 years.
[0030] (5) The outer protective layer has the characteristics of being resistant to pressure, tensile strength, corrosion and wear.
[0031] Using the aforementioned coaxial organic signal cable can reduce external electromagnetic interference, prevent signal leakage, maintain signal integrity and accuracy, and shield internally generated electromagnetic waves from interfering with signal transmission, further improving the stability of signal transmission.
[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A coaxial organic signal cable, comprising: A silver-plated copper conductor (1) and an insulating layer (2) and a sheath layer (11) are coaxially disposed on the outside of the silver-plated copper conductor (1), characterized in that: a first isolation layer (3) and a second isolation layer (10) are respectively disposed between the insulating layer (2) and the sheath layer (11) covering the outside of the silver-plated copper conductor (1), a first braided shielding layer (4) and a second braided shielding layer (6) are respectively disposed between the first braided shielding layer (4) and the second braided shielding layer (6), and between the second braided shielding layer (6) and the first braided shielding layer (10). A first armor layer (5) and a second armor layer (7) are respectively provided between the two isolation layers (10). A semi-conductive adhesive layer (8) is coated on the outer surface of the silver-plated copper conductor (1). The insulating layer (2) is tightly wrapped around the outer side of the silver-plated copper conductor (1) through the semi-conductive adhesive layer (8). A semi-conductive wrapping layer (9) is tightly provided on the outer side of the insulating layer (2). The semi-conductive strip of the semi-conductive wrapping layer (9) obtained by overlapping and wrapping further includes: a substrate layer (91) and a nano-conductive particle coating (92) sprayed on at least one side surface of the substrate layer (91).
2. The coaxial organic signal cable according to claim 1, characterized in that: The semiconductive adhesive layer (8) is obtained by curing the semiconductive adhesive coated on the outer surface of the silver-plated copper conductor (1).
3. The coaxial organic signal cable according to claim 1, characterized in that: The substrate layer (91) is a PET substrate layer or a nylon substrate layer.
4. The coaxial organic signal cable according to claim 1, characterized in that: The nano-conductive particle coating (92) is a nano-carbon black particle coating, a nano-hollow carbon tube coating, or a nano-silver particle coating.
5. The coaxial organic signal cable according to claim 1, characterized in that: Both the first isolation layer (3) and the second isolation layer (10) are formed by wrapping and covering with polyimide tape.
6. The coaxial organic signal cable according to claim 1, characterized in that: The first braided shielding layer (4) and the second braided shielding layer (6) are both made of silver-plated copper wire with a diameter of 0.16 mm to 0.20 mm and the braiding density is not less than 90%.