Full-water-blocking 6A type cable

Abstract

The utility model discloses a full-water-blocking 6A type cable, which comprises a cross-shaped framework, four cavities of the cross-shaped framework are respectively provided with a twisted wire group formed by twisting two insulating core wires in pairs, a non-woven fabric belt is lapped on the cross-shaped framework and the twisted wire groups through gaps, silicic acid gel is filled between the cross-shaped framework and the four twisted wire groups, and the cross-shaped framework and the four twisted wire groups are respectively provided with a water-blocking layer. The cross skeleton and the four stranded wire groups are wrapped by a lamination non-woven fabric, the lamination non-woven fabric is wrapped by an aluminum-plastic composite belt, the aluminum-plastic composite belt is woven by a tinned copper wire woven belt, the tinned copper wire woven belt is wrapped by a water-blocking belt, and the water-blocking belt is extruded by a sheath. The waterproof cable has the advantage that the waterproof cable has a good waterproof protection effect on the radial direction and the axial direction of the cable.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a fully water-blocking Category 6A cable. Background Art

[0002] With the rapid development of the communications industry, especially the widespread promotion of 5G commercial use, the continuous development of the Internet of Things, the large-scale construction of data centers, and the continuous improvement of industrial automation levels, the requirements for cables are also increasing. As the main channel for data transmission, the performance of cables directly affects the speed, quality, and stability of information transmission. Cables are either laid outdoors in the sun and rain, or laid in the wall and corroded by cement mortar. After a long period of sun and rain or corrosion, the sheath on the cable is prone to aging and cracking, which makes it easy for water vapor to enter the inner wall of the cable and affect the electrical performance of the cable.

[0003] A waterproof cable with the publication number CN212256995U is disclosed on the market. A thin film layer is arranged between the twisted pair and the water-blocking layer, which can not only supplement the water-blocking function of the water-blocking layer and enhance the overall waterproof ability of the cable, but also enhance the tensile strength of the cable and prevent the water-blocking layer from breaking due to friction and pulling. However, this structure has a good water-blocking effect in the radial direction of the cable, but a poor water-blocking effect in the axial direction of the cable. During the use of the cable, the core wire of the axial connection end of the cable needs to be connected to the connector, and the core wire of the axial connection end needs to be exposed to the outside when the connection is made. The core wire of the axial connection end of the cable is exposed to the outside and cannot be effectively protected from water when it encounters water. Water easily diffuses into the cable and affects the electrical performance of the cable. Utility Model Content

[0004] The utility model discloses a fully water-blocking 6A category cable which can provide good water-blocking protection for the cable in both radial and axial directions.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a fully water-blocking Category 6A cable, comprising: a cross skeleton, a water-blocking rope is filled in the center of the cross skeleton, a stranded wire group formed by two insulated core wires twisted in pairs is arranged in the four chambers of the cross skeleton, a non-woven fabric tape is wrapped around the cross skeleton and the stranded wire group through a gap, silica gel is filled between the cross skeleton and the four stranded wire groups, a coated non-woven fabric is wrapped around the cross skeleton and the four stranded wire groups, an aluminum-plastic composite tape is wrapped around the coated non-woven fabric, a tinned copper wire braid is woven on the aluminum-plastic composite tape, a water-blocking tape is wrapped around the tinned copper wire braid, and a sheath is extruded on the water-blocking tape.

[0006] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the four ends of the cross skeleton are all configured to be arc-shaped.

[0007] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the coated non-woven fabric is composited by a PE film layer and two non-woven fabric layers, and the PE film layer is located between the two non-woven fabric layers.

[0008] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the twisting pitches of the four insulating core wires are different.

[0009] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the wrapping direction of the non-woven fabric tape is opposite to the wrapping direction of the coated non-woven fabric, and the wrapping direction of the coated non-woven fabric is opposite to the wrapping direction of the aluminum-plastic composite tape.

[0010] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the overlap rate of the coated non-woven fabric is between 10% and 15%, and the shielding rate of the aluminum-plastic composite tape is between 20% and 25%.

[0011] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the overlap rate of the water-blocking tape is between 10% and 15%.

[0012] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the cross skeleton is made of PE material.

[0013] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the braiding density of the tinned copper wire braided tape is greater than 95%.

[0014] Furthermore, in the aforementioned fully water-blocking Category 6A cable, the width of the non-woven fabric tape is 10 mm to 12 mm, and the width of the wrapping gap of the non-woven fabric tape is 2 to 2.5 times the width of the non-woven fabric tape.

[0015] The utility model has the following advantages: when the sheath at the radial position of the cable is broken, the water-blocking tape can absorb the water vapor at the broken position, and then expand to form a gel-like substance to seal the crack on the sheath, thereby preventing the water vapor from diffusing into the interior of the cable; and when the axial connection end of the cable encounters water, the silica gel quickly absorbs the water at the cross skeleton and the insulating core wire, and the coated non-woven fabric can absorb and isolate the water vapor that penetrates between the coated non-woven fabric and the aluminum-plastic composite tape, and the water-blocking tape expands after absorbing water to block the water from diffusing to the tinned copper wire braided tape, thereby preventing the water at the axial connection end from diffusing into the interior of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the fully water-blocking Category 6A cable described in the utility model.

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure of mid-laminated non-woven fabric. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] like Figure 1 , Figure 2As shown, the fully water-blocking Category 6A cable described in the utility model includes: a cross skeleton 1, the cross skeleton 1 is made of PE material, and a stranded wire group 2 formed by twisting two insulated core wires is arranged in each of the four chambers of the cross skeleton 1, and the twisting pitch of each stranded wire group 2 is different, which reduces the signal interference between the stranded wire groups 2 and improves the transmission performance of the cable, and the cross skeleton 1 made of PE material has a lower dielectric constant, which further reduces the signal interference between the stranded wire groups 2, and a non-woven fabric tape 21 is wrapped through a gap on the cross skeleton 1 and the stranded wire group 2, the width of the non-woven fabric tape 21 is 10mm~12mm, and the width of the wrapping gap of the non-woven fabric tape 21 is 2~2.5 times the width of the non-woven fabric tape 21, so that the non-woven fabric tape 21 can be guaranteed to wrap the four The stranded wire group 2 is tied tightly to the cross skeleton 1 without affecting the bending performance of the stranded wire group 2. Silicate gel 11 is filled between the cross skeleton 1 and the four stranded wire groups 2. The silica gel 11 covers the non-woven fabric tape 21, the cross skeleton 1 and the stranded wire group 2 exposed in the gap between the non-woven fabric tape 21. During the production process, the compression resistance of the cable can be improved after filling with the silica gel 11. The silica gel 11 has excellent electrical insulation performance and can ensure that the cable can work stably in harsh environments. A laminated non-woven fabric 3 is wrapped around the non-woven fabric tape 21. The wrapping rotation direction of the laminated non-woven fabric 3 is opposite to that of the non-woven fabric tape 21. The laminated non-woven fabric 3 is composited by a PE film layer 32 and two non-woven fabric layers 31. The PE film layer 32 is located between the two non-woven fabric layers 3 1, the PE film 32 in the laminated nonwoven fabric 3 has high water barrier performance, high tensile strength and tearing strength, and the nonwoven fabric layer 31 has good air permeability and elasticity. The laminated nonwoven fabric 3 can improve the tensile strength of the cable and the water barrier effect in the radial direction. The four ends of the cross skeleton 1 are all set to an arc shape to prevent the ends of the cross skeleton 1 from causing damage to the laminated nonwoven fabric 3 during the wrapping process. An aluminum-plastic composite tape 4 is wrapped on the laminated nonwoven fabric 3. The wrapping rotation direction of the aluminum-plastic composite tape 4 is opposite to that of the laminated nonwoven fabric 3, which can enhance the tensile and compressive strength of the cable, make the cable more stable when subjected to external force, and also improve the tightness between the aluminum-plastic composite tape 4 and the laminated nonwoven fabric 3. The shielding effect of the aluminum-plastic composite tape 4 The shielding rate is controlled between 20% and 25%, which can prevent the shielding rate from being too low and affecting the shielding effect, and can also prevent the shielding rate from being too high and affecting the bending performance of the cable. The overlap rate of the coated non-woven fabric 3 is controlled between 10% and 15%. Since the texture of the coated non-woven fabric 3 is relatively soft, it is not easy for the overlap to warp when bending, so controlling it between 10% and 15% can obtain a better wrapping effect. A tinned copper wire braided tape 5 is woven on the aluminum-plastic composite tape 4, and the braiding density of the tinned copper wire braided tape 5 is greater than 95%. The aluminum-plastic composite tape 4 and the tinned copper wire braided tape 5 can improve the shielding effect of the cable. A water-blocking tape 6 is wrapped on the tinned copper wire braided tape 5, and the overlap rate of the water-blocking tape 6 is controlled between 10% and 15%, and a sheath 7 is extruded on the water-blocking tape 6.

[0020] If the sheath 7 has a crack, that is, there is a crack in the radial direction of the cable, the external water vapor will contact the water-blocking tape 6 through the crack, and the water-blocking tape 6 will absorb the water vapor and then expand to form a gel-like substance to seal the crack, effectively preventing water vapor from penetrating into the cable; if the connecting end of the cable that is axially connected to the joint encounters water, the silica gel 11 will quickly absorb the water on the cross skeleton 1 and the insulating core wire to prevent water from diffusing inward into the cable. After encountering water, the water-blocking tape 6 will quickly expand to form a gel-like substance to block water from diffusing to the tinned copper wire braided tape 5, and the coated non-woven fabric 3 can absorb and isolate the water vapor that has penetrated between the coated non-woven fabric 3 and the aluminum-plastic composite tape 4, preventing the water vapor there from affecting the aluminum-plastic composite tape 4.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. Fully water-blocking Category 6A cable, characterized by: include: A cross skeleton, wherein four chambers of the cross skeleton are each provided with a stranded wire group formed by twisting two insulated core wires, non-woven fabric tapes are wrapped around the cross skeleton and the stranded wire groups through gaps, silica gel is filled between the cross skeleton and the four stranded wire groups, coated non-woven fabric is wrapped around the cross skeleton and the four stranded wire groups, an aluminum-plastic composite tape is wrapped around the coated non-woven fabric, a tinned copper wire braid is woven on the aluminum-plastic composite tape, a water-blocking tape is wrapped around the tinned copper wire braid, and a sheath is extruded on the water-blocking tape.

2. The fully water-blocked Category 6A cable according to claim 1, characterized in that: The four ends of the cross frame are all arranged in an arc shape.

3. The fully water-blocked Category 6A cable according to claim 1, characterized in that: The laminated nonwoven fabric is composited by a PE film layer and two nonwoven fabric layers, and the PE film layer is located between the two nonwoven fabric layers.

4. The fully water-blocking Category 6A cable according to claim 1, characterized in that: The twist pitches of the four insulated cores are all different.

5. The fully water-blocked Category 6A cable according to claim 1, characterized in that: The wrapping direction of the non-woven fabric tape is opposite to that of the laminated non-woven fabric, and the wrapping direction of the laminated non-woven fabric is opposite to that of the aluminum-plastic composite tape.

6. The fully water-blocking Category 6A cable according to claim 5, characterized in that: The overlap rate of the laminated non-woven fabric is between 10% and 15%, and the shielding rate of the aluminum-plastic composite tape is between 20% and 25%.

7. The fully water-blocked Category 6A cable according to claim 1, characterized in that: The overlap rate of the water-blocking tape is between 10% and 15%.

8. The fully water-blocking Category 6A cable according to claim 1, characterized in that: The cross frame is made of PE material.

9. The fully water-blocking Category 6A cable according to claim 1, characterized in that: The braiding density of the tinned copper wire braid is >95%.

10. The fully water-blocked Category 6A cable according to claim 1, characterized in that: The width of the non-woven fabric tape is 10 mm to 12 mm, and the width of the wrapping gap of the non-woven fabric tape is 2 to 2.5 times the width of the non-woven fabric tape.

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