Silver-plated copper-clad aluminum wire cable for space navigation

Abstract

The utility model relates to the technical field of aerospace cables, and discloses a silver-plated copper-clad aluminum wire cable for aerospace, which comprises at least two conductors, insulating layers are arranged on the outer sides of the conductors, a shielding layer is arranged between the outer sides of the two insulating layers, and a sheath layer is arranged on the outer side of the shielding layer. Compared with a traditional pure copper conductor, the overall weight of the cable is remarkably reduced, the effective load of a spacecraft can be improved, and the launching cost is reduced. The silver plating layer ensures high conductivity of the cable and ensures efficient transmission of electric power or signals; meanwhile, high-performance materials of the insulating layer and the sheath layer are selected, so that the temperature resistance, chemical corrosion resistance and mechanical strength of the cable are enhanced, and the cable is suitable for an extreme aerospace environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aerospace cable, concretely is a silver plated copper clad aluminum wire cable for spaceflight. BACKGROUND

[0002] With the rapid development of the aerospace field, more stringent requirements are put forward for the performance and efficiency of wire and cable. Traditionally, spacecraft widely use C55 series cable, i.e. crosslinked ethylene-tetrafluoroethylene copolymer (X-ETFE) insulated wire and cable. This type of cable attempts to achieve weight reduction by thinning the thickness of the insulation layer and the sheath to meet the demand of spacecraft for lightweight materials.

[0003] However, the weight reduction effect of this method is relatively limited, which is difficult to meet the growing demand for lightweight. In order to meet the urgent demand for lightweight wire and cable in the aerospace field, researchers began to explore new materials and structures. Among them, the introduction of silver plated copper clad aluminum conductor and its shielding technology provides a new solution for the lightweight of wire and cable. Silver plated copper clad aluminum material combines the excellent electrical conductivity of silver plated copper and the low density characteristics of aluminum. This unique composite property enables the material to maintain good electrical conductivity while significantly reducing its weight. Compared with traditional materials, silver plated copper clad aluminum conductor can achieve 20% to 40% weight reduction, which is of great significance to improve the payload of spacecraft, reduce launch costs and enhance the overall performance of spacecraft. SUMMARY

[0004] The utility model aims at least solves one of the technical problems existing in the prior art, and therefore the utility model provides a silver plated copper clad aluminum wire cable for spaceflight, which comprises at least two conductors, an insulation layer is arranged outside the conductors, a shielding layer is arranged between the outer sides of the two insulation layers, and a sheath layer is arranged outside the shielding layer.

[0005] Further, the conductor comprises at least one main wire core, a plurality of ring wire cores are arranged in a ring shape outside the main wire core, and the main wire core and the plurality of ring wire cores are twisted to form the conductor.

[0006] Further, the main wire core is a high-strength silver plated copper alloy wire core, and the ring wire core is a silver plated copper clad aluminum wire.

[0007] Further, the insulation layer is a crosslinked ethylene-tetrafluoroethylene copolymer layer.

[0008] Further, the shielding layer is a silver plated copper clad aluminum layer.

[0009] Further, the sheath layer is a crosslinked ethylene-tetrafluoroethylene copolymer layer.

[0010] Further, the insulating layer and the sheath layer are subjected to an irradiation cross-linking process.

[0011] The utility model discloses the beneficial effect is:

[0012] By adopting silver-plated copper aluminum conductor, compared with traditional pure copper conductor, the overall weight of the cable is significantly reduced, which helps to improve the effective load of the spacecraft and reduce the launch cost. The silver-plated layer ensures the high conductivity of the cable, ensuring efficient transmission of power or signals. At the same time, the selection of high-performance materials for the insulating layer and the sheath layer enhances the temperature resistance, chemical corrosion resistance and mechanical strength of the cable, which is suitable for extreme space environment. The design of the shielding layer effectively reduces electromagnetic and radio frequency interference, ensuring the stability and accuracy of data transmission, which is particularly important for space communication and control systems. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses a structure schematic drawing.

[0014] Among them, 1, conductor;11, main wire core;12, around wire core;2, insulating layer;3, shielding layer;4, sheath layer. DETAILED DESCRIPTION

[0015] The embodiments of the utility model will be described below in detail, the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0016] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0017] In the description of the utility model, it is understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] In the embodiments, the silver-plated copper aluminum conductor is used, which is lighter than the traditional pure copper conductor, and is suitable for the spacecraft. Figure 1The utility model provides a kind of spaceflight silver-plated copper aluminum-clad wire cable, including at least two conductors 1, the conductor 1 is provided with insulating layer 2, shielding layer 3 is equipped between the outside of two insulating layer 2, shielding layer 3 outside is provided with sheath layer 4, insulating layer 2 is arranged in the periphery of conductor 1, ensure the electrical isolation between conductor 1, prevent current leakage or short circuit, while maintaining the mechanical strength and temperature resistance of cable, shielding layer 3 is located between two insulating layer 2, for reducing electromagnetic interference and radio frequency interference, protect internal signal from outside environment interference, ensure the accuracy and integrity of data transmission, sheath layer 4 as the outermost layer of cable, not only provide additional mechanical protection, prevent cable from physical damage in space mission, also enhance the weather resistance and chemical stability of cable.

[0019] Refer to Figure 1 Among them, the conductor 1 includes at least one main wire core 11, a plurality of ring wire cores 12 are arranged in annular outside of the main wire core 11, and the main wire core 11 and the plurality of ring wire cores 12 are twisted to form the conductor 1.

[0020] It is further explained that the main wire core 11 is a high-strength silver-plated copper alloy wire core, and the ring wire core 12 is a silver-plated copper aluminum-clad wire.

[0021] Through the above structure, the main wire core 11 is the core part of the conductor, and the main wire core 11 adopts a high-strength silver-plated copper alloy wire core. This material not only has excellent electrical conductivity, but also has high strength characteristics, with a strength of 700Mpa, significantly improving the overall breaking force of the conductor, ensuring the reliability and durability of the cable in extreme environments. The ring wire core 12 is a plurality of silver-plated copper aluminum-clad wires surrounding the main wire core 11. The silver-plated copper aluminum-clad wire combines the electrical conductivity of silver-plated copper and the low density characteristics of aluminum, allowing the conductor to maintain good electrical conductivity while achieving significant weight reduction. This not only helps to reduce the overall weight of the spacecraft, but also improves the transmission efficiency of the cable. The 19 ring wire cores 12 in the conductor and the ultra-high-strength silver-plated copper alloy main wire core 11 are combined through a precise twisting process, which not only enhances the mechanical strength of the conductor 1, but also optimizes the distribution of current in the conductor, reduces energy loss, and improves transmission efficiency.

[0022] Refer to Figure 1 Among them, the insulating layer 2 is a crosslinked ethylene-tetrafluoroethylene copolymer layer.

[0023] Through the above structure, the crosslinked ethylene-tetrafluoroethylene copolymer material has a wide working temperature range and can maintain stable performance in extreme high or low temperature environments.

[0024] Refer to Figure 1 Among them, the shielding layer 3 is a silver-plated copper aluminum-clad layer.

[0025] Through the above structural arrangement, the silver-plated copper-clad aluminum material with a silver-plated surface has a higher temperature resistance rating. The silver layer can effectively reflect heat, reducing the temperature of the material in a high-temperature environment, thereby prolonging the service life of the material. The silver layer also has good oxidation resistance, which can protect the internal copper-clad aluminum material from oxidation corrosion. This helps to maintain the electrical conductivity and mechanical properties of the shielding layer, ensuring the long-term reliability of the wire and cable.

[0026] With reference to Figure 1 The sheath layer 4 is a cross-linked ethylene-tetrafluoroethylene copolymer layer.

[0027] Further, the insulation layer 2 and the sheath layer 4 in the present embodiment are subjected to an irradiation cross-linking process.

[0028] Through the above structural arrangement, the insulation layer 2 and the sheath layer 4 are both subjected to an irradiation cross-linking process. This process involves irradiating the molecular polymers in the insulation and sheath with high-energy particle rays to initiate cross-linking reactions between the molecular chains, forming a more compact three-dimensional network structure.

[0029] After irradiation cross-linking, the molecular chains of the insulation layer 2 and the sheath layer 4 form a more compact three-dimensional network structure. This structure makes the material more stable under high-temperature conditions and less prone to thermal decomposition or softening. Therefore, irradiation cross-linking can significantly improve the thermal stability of the cable, ensuring that it maintains excellent performance in high-temperature environments.

[0030] Irradiation cross-linking processing can improve the weather resistance of the material, making it more resistant to harsh environments such as moisture and salt spray. This is mainly due to the compact structure formed inside the material after cross-linking, effectively preventing the penetration of water and corrosive substances, thereby prolonging the service life of the cable. Irradiation cross-linking can also enhance the mechanical strength of the insulation layer and the sheath layer, making them more resistant to wear and tear.

[0031] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the listed element.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silver-coated copper clad aluminum wire cable for aerospace applications comprising at least two conductors (1), characterized in that: The conductor (1) is provided with an insulating layer (2) on the outside, a shielding layer (3) is arranged between the outside of the two insulating layers (2), and a sheath layer (4) is arranged on the outside of the shielding layer (3).

2. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 1, wherein: The conductor (1) comprises at least one main wire core (11), a plurality of surrounding wire cores (12) are arranged in a ring shape on the outside of the main wire core (11), and the main wire core (11) and the plurality of surrounding wire cores (12) are twisted to form the conductor (1).

3. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 2, wherein: The main wire core (11) is a high-strength silver-plated copper alloy wire core, and the surrounding wire core (12) is a silver-plated copper-clad aluminum wire.

4. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 1 wherein: The insulating layer (2) is a cross-linked ethylene-tetrafluoroethylene copolymer layer.

5. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 1 wherein: The shielding layer (3) is a silver-plated copper-clad aluminum layer.

6. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 1, wherein: The sheath layer (4) is a cross-linked ethylene-tetrafluoroethylene copolymer layer.

7. The silver-coated copper clad aluminum wire cable for space application as claimed in claim 1, wherein: The insulating layer (2) and the sheath layer (4) are subjected to an irradiation cross-linking processing procedure.

Images