High-strength copper-core silver-plated special high-temperature cable

Abstract

The utility model relates to the technical field of cables, and discloses a high-strength copper-core silver-plated special high-temperature cable, which comprises a conductor and further comprises a conductor shielding layer arranged on the outer side of the conductor, an insulating layer arranged on the outer side of the conductor shielding layer, and an insulating shielding layer arranged on the outer side of the insulating layer. The inner protection layer is arranged on the outer side of the insulation shielding layer, and an outer protection layer is arranged on the outer side of the inner protection layer; according to the utility model, fluoroplastic (such as PTFE and FEP) is used as the insulating layer, the long-term tolerable temperature can reach more than 200 DEG C, the chemical corrosion resistance is strong, the high-temperature resistance of the cable is improved, the high-temperature-resistant metal braid layer (such as tinned copper) is used as the outer layer to reinforce mechanical protection, the flexible silica gel is used as the inner layer to improve the bending resistance, and the service life of the cable is prolonged. Corrugated grooves are designed in the inner wall of the protective sleeve, so that the heat dissipation area can be increased; the heat conduction filling material boron nitride filling material is embedded in the protection sleeve so that internal heat conduction efficiency can be enhanced and heat radiation efficiency in the cable can be enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a kind of high-strength copper core silver-plated special high temperature cable. BACKGROUND

[0002] Special high temperature cable is designed for extreme high temperature environment, needs long-term resistance -60℃~260℃ Temperature range, meet the conductivity, mechanical strength and anticorrosion requirement simultaneously, applicable to aerospace, new energy, metallurgy and other high requirement scene.

[0003] Traditional high temperature cable insulation and sheath material are prone to aging under high temperature condition, part of material (such as ordinary PVC or low-end silicone rubber) is hardened, cracked or decomposed under long-term high temperature, lead to low insulation performance, and heat accumulation in cable inside under high temperature environment, accelerate material aging, but traditional structure lacks effective heat dissipation channel or insufficient heat dissipation area. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of high-strength copper core silver-plated special high temperature cable, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high-strength copper core silver-plated special high temperature cable, including conductor, further comprising:

[0006] Conductor shielding layer is arranged at the outside of conductor, the outside of conductor shielding layer is provided with insulating layer, the outside of insulating layer is provided with insulating shielding layer;

[0007] Inner protective layer is arranged at the outside of insulating shielding layer, the outside of inner protective layer is provided with outer protective layer.

[0008] Preferably, the conductor is silver-plated copper core.

[0009] Preferably, the conductor shielding layer is woven into a net by multiple silver-plated copper wires, and is wrapped outside the conductor.

[0010] Preferably, the insulating layer is made of fluoroplastic.

[0011] Preferably, the inner protective layer includes an inner layer and an outer layer, the inner layer is made of flexible silica gel, and the outer layer is made of silver-plated copper material.

[0012] Preferably, the outer protective layer includes a protective sleeve and a corrugated groove, and the corrugated groove is arranged inside the protective sleeve.

[0013] Preferably, the inner wall of the protective sleeve is filled with boron nitride filler.

[0014] Compared with the prior art, the utility model have the advantages that:

[0015] The utility model discloses adopt fluorine plastic (such as PTFE, FEP) as insulating layer, and its long -term tolerance temperature can reach 200 DEG C above, and the strong chemical corrosion resistance is strong, has improved the high temperature resistant performance of cable, and the outer layer uses the high temperature resistant metal braid (such as tinned copper) to strengthen the mechanical protection, and the inner layer adopts the flexible silica gel and promotes the bending resistance, and the inner wall of the protection sleeve designs the corrugated groove and can increase the heat dissipation area, and the inside embedding of the protection sleeve heat conducting filler boron nitride filler can promote the internal heat transfer efficiency, thereby improving the heat dissipation efficiency of cable interior. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a high strength copper core silver plating special high temperature cable's structural diagram for the utility model provides the high strength copper core silver plating special high temperature cable's structural diagram;

[0017] Figure 2 The utility model provides a inner protective layer structure diagram for the utility model provides the inner protective layer structure diagram;

[0018] Figure 3 The utility model provides a outer protective layer structure diagram for the utility model provides the outer protective layer structure diagram;

[0019] Figure 4 The utility model provides a protection sleeve internal structure diagram for the utility model provides the protection sleeve internal structure diagram.

[0020] In the drawing: 1, conductor, 2, conductor shield layer, 3, insulating layer, 4, insulating shield layer, 5, inner protective layer, 501, outer layer, 502, inner layer, 6, outer protective layer, 601, protection sleeve, 602, corrugated groove, 7, boron nitride filler. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0022] Please refer to Figures 1-4 As shown in the figure, a kind of high strength copper core silver plating special high temperature cable, including conductor 1, still include: conductor shield layer 2, setting in the outside of conductor 1, conductor 1 surface can form air gap due to stranding structure, leading to electric field concentration.Conductor shield layer (semiconductive material) and conductor equipotential contact, evenly dispersed electric field, eliminate the partial discharge risk between conductor and insulating layer; The outside of conductor shield layer 2 is provided with insulating layer 3, and the insulating layer 3 separates the conductor 1 from the external environment by high-resistance material, prevents current from unintended leakage, avoids the risk of electric shock or equipment leakage ; The outer side of the insulating layer 3 is provided with an insulating shielding layer 4, which is located on the outer surface of the insulating layer 3 and eliminates the air gap or crack between the insulating layer 3 and the sheath by being in potential contact with the metal sheath, thereby avoiding partial discharge caused by electric field concentration when the cable is bent ; An inner protective layer 5 is arranged on the outer side of the insulating shielding layer 4, and the inner protective layer 5 adopts a composite sheath structure, with the outer side for mechanical protection and the inner layer for improving bending resistance; An outer protective layer 6 is arranged on the outer side of the inner protective layer 5, and the outer protective layer 6 adopts a corrugated design to increase the heat dissipation area.

[0023] It should be noted that the inner protective layer 5 and the outer protective layer 6 provide double protection for the cable, improve the compression and bending resistance of the cable, and the corrugated design of the outer protective layer 6 can increase the heat dissipation area of the cable, the insulating layer 3 is made of high-temperature resistant material to enhance the high-temperature resistance of the cable.

[0024] The conductor 1 is a silver-plated copper core; the silver-plated layer can greatly reduce the conductor resistance and reduce the high-frequency signal transmission loss, the surface of the silver-plated layer is dense and smooth, the contact resistance fluctuation is reduced, and the stable transmission of electric energy in the large current or precision instrument scene is ensured, the silver-plated layer remains stable in the range of -60℃ to 260℃, the melting point of silver (961.8℃) is much higher than the requirement of conventional high-temperature lines, and it can be used in high-temperature scenes such as metallurgy and photovoltaic for a long time, The silver oxide formed after oxidation still has conductivity, avoiding performance degradation caused by high-temperature oxidation.

[0025] The conductor shielding layer 2 is woven into a net by multiple strands of tinned copper wire and wrapped on the outer side of the conductor 1. The conductor shielding layer 2 is combined with high-temperature resistant materials such as fluoroplastic to ensure long-term stability in metallurgical, chemical and other scenes .

[0026] The insulating layer 3 is made of fluoroplastic; the fluoroplastic (such as PTFE, FEP) is used as the insulating layer 3, which can withstand a temperature of 200℃ or above for a long time, and has strong chemical corrosion resistance, improving the high-temperature resistance of the cable.

[0027] The inner protective layer 5 includes an inner layer 502 and an outer layer 501, the inner layer 502 is made of flexible silica gel, and the outer layer 501 is made of tinned copper material; the outer layer 501 uses a high-temperature resistant metal braid layer (such as tinned copper) to strengthen mechanical protection, and the inner layer 502 uses flexible silica gel to improve bending resistance.

[0028] The outer protective layer 6 comprises a protective sleeve 601 and a corrugated groove 602, the corrugated groove 602 is arranged in the interior of the protective sleeve 601; the inner wall of the protective sleeve 601 is filled with boron nitride filler 7; the corrugated groove 602 designed on the inner wall of the protective sleeve 601 can increase the heat dissipation area; the heat-conducting filler boron nitride filler 7 embedded in the interior of the protective sleeve 601 can improve the internal heat conduction efficiency, thereby improving the heat dissipation efficiency inside the cable.

[0029] Working principle: the conductor 1 is made of silver-plated copper core, the silver-plated layer can greatly reduce the conductor resistance and reduce the high-frequency signal transmission loss, the surface of the silver-plated layer is dense and smooth, the contact resistance fluctuation is reduced, the stable transmission of electric energy in the scene of large current or precision instrument is ensured, the silver-plated layer remains stable in the range of-60℃~260℃, the melting point of silver (961.8℃) is much higher than the requirement of conventional high-temperature wire, and the silver-plated layer can be used in high-temperature scenes such as metallurgy and photovoltaic for a long time, The silver oxide formed after the silver layer is oxidized still has conductivity, avoiding performance degradation caused by high-temperature oxidation, fluoroplastic (such as PTFE, FEP) is used as the insulating layer 3, which can withstand a temperature of 200℃ or above for a long time, and has strong chemical corrosion resistance, improving the high-temperature resistance of the cable, the outer layer 501 uses a high-temperature-resistant metal braid (such as tin-plated copper) to strengthen mechanical protection, the inner layer 502 uses flexible silica gel to improve bending resistance, the corrugated groove 602 designed on the inner wall of the protective sleeve 601 can increase the heat dissipation area; the heat-conducting filler boron nitride filler 7 embedded in the interior of the protective sleeve 601 can improve the internal heat conduction efficiency, thereby improving the heat dissipation efficiency inside the cable.

[0030] It should be noted that, in the present 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 variation 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. In other words, without 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 element.

[0031] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-strength copper-core silver-plated special high-temperature cable, comprising a conductor (1), characterized in that, Also includes: A conductor shielding layer (2) is disposed on the outside of the conductor (1), and an insulating layer (3) is disposed on the outside of the conductor shielding layer (2), and an insulating shielding layer (4) is disposed on the outside of the insulating layer (3). An inner protective layer (5) is disposed on the outside of the insulating shielding layer (4). An outer protective layer (6) is disposed on the outside of the inner protective layer (5). The insulating layer (3) is made of fluoroplastic. The inner protective layer (5) includes an inner layer (502) and an outer layer (501). The inner layer (502) is made of flexible silicone. The outer layer (501) is made of tin-plated copper. The outer protective layer (6) includes a protective sleeve (601) and a corrugated groove (602). The corrugated groove (602) is formed inside the protective sleeve (601).

2. The high-strength copper core silver-plated special high-temperature cable according to claim 1, characterized in that: The conductor (1) is a silver-plated copper core.

3. The high-strength copper core silver-plated special high-temperature cable according to claim 1, characterized in that: The conductor shielding layer (2) is made of multi-strand tin-plated copper wire woven into a mesh and wrapped around the outside of the conductor (1).

4. The high-strength copper core silver-plated special high-temperature cable according to claim 1, characterized in that: The inner wall of the protective sleeve (601) is filled with boron nitride filler (7).

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