Moistureproof signal cable

Abstract

The invention discloses a moisture-proof signal cable which comprises a conductive layer, a first waterproof layer, an insulating layer, a metal shielding layer, a second waterproof layer and an outer sheath which are sequentially arranged from inside to outside in a wrapping mode. The first water-blocking layer comprises a semiconductor water-blocking tape; the second waterproof layer comprises a bentonite waterproof layer. By arranging physical isolation, chemical adsorption and active drainage, a multi-layer collaborative moisture-proof system is constructed, and the overall moisture-proof effect can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission, and in particular to a moisture-proof signal cable. Background Art

[0002] Traditional cables are susceptible to moisture penetration in humid environments, which reduces the dielectric strength of the insulation and increases the risk of breakdown. Furthermore, this can lead to oxidation and corrosion of the conductors, increasing resistance. Existing technologies typically utilize a single metal sheath or water-blocking tape structure, which is heavy, lacks toughness, and has limited long-term moisture-proofing effectiveness.

[0003] The invention patent with publication number CN115116667A publicly authorizes a signal transmission monitoring data monitoring integrated power cable, which constructs a moisture-proof structure by setting a waterproof and moisture-proof layer; although this structure can achieve waterproof and moisture-proof effects, there is a risk of failure in long-term use, that is, the overall moisture-proof effect is limited. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a moisture-proof signal cable to solve the technical problem of limited overall moisture-proof effect in the prior art.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a moisture-proof signal cable, comprising a conductive layer, a first water-blocking layer, an insulating layer, a metal shielding layer, a second water-blocking layer and an outer sheath, which are sequentially covered from the inside to the outside; the first water-blocking layer comprises a semiconductor resistance water tape; and the second water-blocking layer comprises a bentonite waterproof layer.

[0006] In some embodiments, the semiconductor resistive water tape includes two layers of first non-woven fabrics and an expansion water-resistant powder located between the two layers of the first non-woven fabrics. The two layers of the first non-woven fabrics are connected end to end in a ring shape and are wrapped around the outside of the conductive layer.

[0007] In some embodiments, the bentonite waterproof layer includes a composite geotextile, a second non-woven fabric, and bentonite located between the composite geotextile and the second non-woven fabric, and the composite geotextile and the second non-woven fabric are respectively arranged in a ring shape.

[0008] In some embodiments, the bentonite has a particle size of 100-400 mesh.

[0009] In some embodiments, a drainage groove is provided on the outer surface of the outer sheath.

[0010] In some embodiments, the drainage groove is rectangular.

[0011] In some embodiments, the axial angle of the drainage groove is 30°-45°.

[0012] In some embodiments, the insulating layer includes a nano-silicon dioxide layer.

[0013] In some embodiments, the metal shielding layer comprises an aluminum-plastic composite tape.

[0014] In some embodiments, a hydrophobic coating is provided between the aluminum-plastic composite tape and the second water-blocking layer.

[0015] Compared with the existing technology, the moisture-proof signal cable provided by the present invention constructs a multi-layer collaborative moisture-proof system by providing physical barriers (metal shielding layer), chemical adsorption (first water-blocking layer and second water-blocking layer) and an active drainage structure (outer sheath); specifically, the outer sheath is used to block and discharge the main water vapor; further, the first water-blocking layer and the second water-blocking layer are used to adsorb water vapor; finally, the metal shielding layer blocks the erosion of water vapor from a physical level, effectively improving the overall moisture-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an internal cross-sectional view of a moisture-proof signal cable provided by an embodiment of the present invention; Description of reference numerals: 100. Conductive layer; 200. First water-blocking layer; 210. Semiconductor resistance water tape; 211. First non-woven fabric; 212. Swelling water-blocking powder; 300. Insulating layer; 310. Nano-silicon dioxide layer; 400. Metal shielding layer; 410. Aluminum-plastic composite tape; 500. Second water-blocking layer; 510. Bentonite waterproofing layer; 511. Composite geotextile; 512. Second non-woven fabric; 513. Bentonite; 600. Outer sheath; 610. Drainage trough; 700. Hydrophobic coating. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to solve the technical problem of limited overall moisture-proof effect, the present invention provides a moisture-proof signal cable, which can achieve an improvement in the overall moisture-proof effect.

[0019] It should be noted that the moisture-proof signal cable described in the present invention is used for but not limited to cables, etc. For the convenience of explanation, in the present invention, only the application of a moisture-proof signal cable to cables is used as an example for explanation. The principle of applying a moisture-proof signal cable to other types of equipment is essentially the same as that applied to cables, and will not be repeated here.

[0020] See also Figure 1 , Figure 1 This is a structural schematic diagram of a moisture-proof signal cable in one embodiment of the present invention. The moisture-proof signal cable includes a conductive layer 100, a first water-blocking layer 200, an insulating layer 300, a metal shielding layer 400, a second water-blocking layer 500, and an outer sheath 600, which are sequentially coated from the inside to the outside; the first water-blocking layer 200 includes a semiconductor resistance water tape 210; the second water-blocking layer 500 includes a bentonite waterproof layer 510.

[0021] In this embodiment, a multi-layered, coordinated moisture-proof system is constructed by providing physical barriers (metal shielding layer 400), chemical adsorption (first water-blocking layer 200 and second water-blocking layer 500), and an active drainage structure (outer sheath 600). Specifically, the outer sheath 600 blocks and drains the majority of water vapor; further, the first water-blocking layer 200 and second water-blocking layer 500 adsorb water vapor; finally, the metal shielding layer 400 physically blocks water vapor erosion, effectively improving the overall moisture-proofing effect.

[0022] In one embodiment, see Figure 1 The semiconductor resistance water tape 210 includes two layers of first non-woven fabrics 211 and an expansion water-resistant powder 212 located between the two layers of first non-woven fabrics 211. The two layers of first non-woven fabrics 211 are connected end to end in a ring shape and are wrapped around the outside of the conductive layer 100.

[0023] In this embodiment, the expansion water-blocking powder 212 between the two layers of first non-woven fabric 211 can expand rapidly when exposed to water and have a water-blocking effect; and the two layers of first non-woven fabric 211 have good hygroscopicity and can effectively absorb and discharge moisture to prevent performance degradation caused by moisture.

[0024] In one embodiment, see Figure 1 The bentonite waterproof layer 510 includes a composite geotextile 511, a second non-woven fabric 512, and bentonite 513 located between the composite geotextile 511 and the second non-woven fabric 512. The composite geotextile 511 and the second non-woven fabric 512 are respectively arranged in a ring shape.

[0025] In this embodiment, the second non-woven fabric 512 and the bentonite 513 located between the composite geotextile 511 and the second non-woven fabric 512 can rapidly swell upon contact with water and form a tight colloid, thereby forming an effective isolation layer to prevent water penetration.

[0026] In one embodiment, see Figure 1 , the particle size of bentonite 513 is 100-400 mesh.

[0027] In one embodiment, see Figure 1A drainage groove 610 is provided on the outer surface of the outer sheath 600 .

[0028] In this embodiment, the outer surface of the outer sheath 600 is provided with drainage grooves 610 to prevent a large amount of water from being attached to the wall of the outer sheath 600 and to achieve centralized drainage through the drainage grooves 610 .

[0029] In one embodiment, see Figure 1 , the drainage groove 610 is rectangular.

[0030] In one embodiment, see Figure 1 The axial angle of the drainage groove 610 is 30°-45°.

[0031] In this embodiment, the axial angle of the drainage grooves 610 is 30°-45°, which helps to evenly distribute the drainage grooves 610 and allows water to be discharged smoothly.

[0032] In one embodiment, see Figure 1 , the insulating layer 300 includes a nano-silicon dioxide layer 310 .

[0033] In this embodiment, In one embodiment, see Figure 1 The metal shielding layer 400 includes an aluminum-plastic composite tape 410 .

[0034] In this embodiment, the metal shielding layer 400 includes an aluminum-plastic composite tape 410 , which not only realizes a waterproof protective layer through a physical structure but also can be used for metal shielding.

[0035] In one embodiment, see Figure 1 A hydrophobic coating 700 is provided between the aluminum-plastic composite tape 410 and the second water-blocking layer 500 .

[0036] In this embodiment, a hydrophobic coating 700 is provided between the aluminum-plastic composite tape 410 and the second water-blocking layer 500. The provision of the hydrophobic coating 700 can further enhance the hydrophobic performance.

[0037] In order to better understand the present invention, the following Figure 1 The technical solution of the present invention is described in detail: First, the sequential coating arrangement of the above-mentioned structure from the inside out achieves multi-layered, coordinated moisture-proofing through physical barrier, chemical adsorption, and active drainage, effectively improving overall moisture-proofing performance and enhancing moisture-proofing stability. It should be noted that the outer sheath 600, second water-blocking layer 500, first water-blocking layer 200, and metal shielding layer 400 all provide progressive moisture-proofing and anti-seepage protection. In particular, only after the outer sheath 600 has blocked most moisture vapor from the outside does the remaining structure truly begin to function as a moisture-proof and anti-seepage structural element, effectively ensuring long-term moisture-proofing.

[0038] The above specific embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A moisture-proof signal cable, characterized in that: Including the following settings from inside to outside: conductive layer; a first water-blocking layer, the first water-blocking layer comprising a semiconductor resistive water tape; Insulation layer; Metal shielding layer; a second water-blocking layer, the second water-blocking layer comprising a bentonite waterproof layer; and Outer sheath.

2. The moisture-proof signal cable according to claim 1, characterized in that: The semiconductor resistance water tape includes two layers of first non-woven fabrics and expansion water-blocking powder located between the two layers of the first non-woven fabrics. The two layers of the first non-woven fabrics are connected end to end in a ring shape and are coated on the outside of the conductive layer.

3. The moisture-proof signal cable according to claim 1, characterized in that: The bentonite waterproof layer includes a composite geotextile, a second non-woven fabric, and bentonite located between the composite geotextile and the second non-woven fabric. The composite geotextile and the second non-woven fabric are respectively arranged in a ring shape.

4. The moisture-proof signal cable according to claim 3, characterized in that: The particle size of the bentonite is 100-400 meshes.

5. The moisture-proof signal cable according to claim 1, characterized in that: The outer surface of the outer sheath is provided with a drainage groove.

6. The moisture-proof signal cable according to claim 5, characterized in that: The drainage groove is rectangular.

7. The moisture-proof signal cable according to claim 5, characterized in that: The axial angle of the drainage groove is 30°-45°.

8. The moisture-proof signal cable according to claim 1, characterized in that: The insulating layer includes a nano-silicon dioxide layer.

9. The moisture-proof signal cable according to claim 1, characterized in that: The metal shielding layer includes an aluminum-plastic composite tape.

10. The moisture-proof signal cable according to claim 9, characterized in that: A hydrophobic coating is provided between the aluminum-plastic composite tape and the second water-blocking layer.

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