Moistureproof circuit cable

Abstract

The utility model relates to the technical field of cables, in particular to a moisture-proof circuit cable, which comprises a plurality of conductors, insulating layers are wrapped outside the conductors, metal shielding layers are wrapped outside the insulating layers, an inner sheath is arranged on the outer sides of the plurality of metal shielding layers, fillers are filled between the inner sheath and the metal shielding layers, and the fillers are filled between the inner sheath and the metal shielding layers. The inner side of the inner sheath is provided with a moisture absorption cushion layer, the outer side of the inner sheath is provided with a steel tape armoring, water-blocking ointment is coated between the inner sheath and the steel tape armoring, and the outer side of the steel tape armoring is wrapped with an outer sheath; according to the utility model, moisture-proof processing is carried out on the inner and outer sides of the inner sheath through the water-blocking ointment and the moisture absorption pad layer, thereby improving the moisture-proof effect of the circuit cable, prolonging the service life and improving the safety.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically to a moisture-proof circuit cable. Background Art

[0002] With the increasing development of science and technology information technology in my country, the exchange of information, and the transmission of electric power resources, cables, as the medium for power transmission and power distribution, are widely used in control installation, connection equipment, power transmission, etc. Cables may have short circuits or open circuits during use, which will lead to power communication interruptions. Therefore, with the rapid development of information technology today, the requirements for ensuring the reliability of information transmission and power supply are getting higher and higher, which puts higher requirements on the performance of cables. In addition to their own conductive properties, the performance indicators of cable performance are also reflected in fire resistance, moisture resistance, explosion resistance, corrosion resistance, temperature performance, expansion performance, tensile strength, elasticity, plasticity, hardness, toughness and fatigue strength. However, the existing circuit cables have poor moisture-proof effect, and long-term use leads to destructive insulation breakdown, causing power accidents, and low safety. Utility Model Content

[0003] The utility model aims to provide a moisture-proof circuit cable, thereby improving the moisture-proof effect of the circuit cable and increasing the service life and safety.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A moisture-proof circuit cable comprises a plurality of conductors, wherein the outside of the conductors is wrapped with an insulating layer, the outside of the insulating layer is wrapped with a metal shielding layer, an inner sheath is provided on the outside of the plurality of metal shielding layers, a filler is filled between the inner sheath and the metal shielding layer, a moisture-absorbing cushion layer is provided on the inside of the inner sheath, a steel belt armor is provided on the outside of the inner sheath, a water-blocking grease and a buffer layer are provided in sequence between the inner sheath and the steel belt armor, and an outer sheath is wrapped on the outside of the steel belt armor.

[0006] Furthermore, the insulating layer is made of a material selected from the group consisting of cross-linked polyethylene and ethylene-propylene rubber.

[0007] Furthermore, the outer side of the metal shielding layer is wrapped with an aluminum-polyethylene composite tape.

[0008] Furthermore, the filler is semiconductor fluffy cotton, and water-blocking powder is arranged inside the semiconductor fluffy cotton.

[0009] Furthermore, the water-blocking powder is an acrylic polymer.

[0010] Furthermore, the moisture absorbing cushion layer is made of a material selected from the group consisting of rubber, foam plastics, and rubber pads.

[0011] Furthermore, the outer sheath is made of TPU material, and the inner sheath is made of polyethylene material.

[0012] Furthermore, the buffer layer is semiconductor fluffy cotton.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The water-blocking grease has strong water absorption and high expansion rate, can absorb water and expand slowly, and form an effective water-blocking barrier to prevent moisture from further entering the cable; the moisture-absorbing cushion layer has hygroscopic properties, can absorb trace moisture that may exist inside the cable, and fix it to prevent moisture diffusion; the utility model performs moisture-proof treatment on the inner and outer sides of the inner sheath through the water-blocking grease and the moisture-absorbing cushion layer, thereby improving the moisture-proof effect of the circuit cable and improving the service life and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] 1. Conductor; 2. Insulation layer; 3. Metal shielding layer; 4. Inner sheath; 5. Filler; 6. Moisture-absorbing cushion layer; 7. Steel belt armor; 8. Water-blocking grease; 9. Outer sheath; 10. Aluminum-polyethylene composite tape; 11. Water-blocking powder; 12. Buffer layer. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, a moisture-proof circuit cable comprises a plurality of conductors 1, the conductors 1 are wrapped with an insulating layer 2 on the outside, the insulating layer 2 is wrapped with a metal shielding layer 3 on the outside, an inner sheath 4 is provided on the outside of the plurality of metal shielding layers 3, a filler 5 is filled between the inner sheath 4 and the metal shielding layer 3, a moisture-absorbing pad 6 is provided on the inside of the inner sheath 4, a steel belt armor 7 is provided on the outside of the inner sheath 4, a water-blocking grease 8 and a buffer layer 12 are sequentially provided between the inner sheath 4 and the steel belt armor 7, and an outer sheath 9 is wrapped on the outside of the steel belt armor 7; the water-blocking grease 8 has strong water absorption and high expansion rate, can absorb water slowly and expand, and form an effective water-blocking barrier to prevent moisture from further entering the cable, the moisture-absorbing pad 6 has hygroscopic properties, can absorb trace moisture that may exist inside the cable, and fix it to prevent moisture diffusion, the inner and outer sides of the inner sheath 4 are moisture-proofed by the water-blocking grease 8 and the moisture-absorbing pad 12 to form a radial water-blocking structure, thereby improving the moisture-proof effect of the circuit cable.

[0018] The insulating layer 2 is made of one of cross-linked polyethylene and ethylene-propylene rubber; both cross-linked polyethylene (XLPE) and ethylene-propylene rubber (EPR) have good moisture-proof properties.

[0019] The outer side of the metal shielding layer 3 is wrapped with an aluminum-polyethylene composite tape 10; the water tightness of the aluminum-polyethylene composite tape 10 is higher than that of single polyethylene, and can effectively prevent moisture penetration.

[0020] The filler 5 is a semiconductor 1 fluffy cotton, and a water-blocking powder 11 is arranged inside the semiconductor fluffy cotton; the water-blocking powder 11 is an acrylic polymer; the water-blocking powder 11 has strong water absorption and high expansion rate. When water enters the cable, the water-blocking powder 11 can strongly absorb water and expand rapidly to form a gel-like substance to block the water seepage channel, thereby ensuring the insulation safety of the cable and forming a longitudinal water-blocking structure; the semiconductor fluffy cotton can effectively buffer the expansion of the water-blocking powder 11 and has certain water-blocking properties.

[0021] The moisture absorbing cushion layer 6 is made of a material selected from the group consisting of rubber, foam plastics and rubber pads.

[0022] The outer sheath 9 is made of TPU material, and the inner sheath 4 is made of polyethylene material.

[0023] The buffer layer 12 is semiconductor fluffy cotton; the semiconductor fluffy cotton can effectively buffer the expansion of the water-blocking paste 8 and has a certain water-blocking performance.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A moisture-proof circuit cable, characterized in that: The invention comprises a plurality of conductors (1), wherein the conductors (1) are wrapped with an insulating layer (2) on the outside, and the insulating layer (2) is wrapped with a metal shielding layer (3) on the outside. An inner sheath (4) is provided on the outside of the plurality of metal shielding layers (3), and a filler (5) is filled between the inner sheath (4) and the metal shielding layer (3). A moisture-absorbing cushion layer (6) is provided on the inside of the inner sheath (4), and a steel belt armor (7) is provided on the outside of the inner sheath (4). A water-blocking grease (8) and a buffer layer (12) are provided in sequence between the inner sheath (4) and the steel belt armor (7), and an outer sheath (9) is wrapped on the outside of the steel belt armor (7).

2. The moisture-proof circuit cable according to claim 1, characterized in that: The insulating layer (2) is made of a material selected from the group consisting of cross-linked polyethylene and ethylene-propylene rubber.

3. The moisture-proof circuit cable according to claim 1, characterized in that: The outer side of the metal shielding layer (3) is wrapped with an aluminum-polyethylene composite tape (10).

4. The moisture-proof circuit cable according to claim 1, characterized in that: The filler (5) is semiconductor fluffy cotton, and water-blocking powder (11) is arranged inside the semiconductor fluffy cotton.

5. The moisture-proof circuit cable according to claim 4, characterized in that: The water-blocking powder (11) is an acrylic polymer.

6. The moisture-proof circuit cable according to claim 1, characterized in that: The moisture absorbing cushion layer (6) is made of a material selected from the group consisting of rubber, foam plastics and rubber pads.

7. The moisture-proof circuit cable according to claim 1, characterized in that: The outer sheath (9) is made of TPU material, and the inner sheath (4) is made of polyethylene material.

8. The moisture-proof circuit cable according to claim 1, characterized in that: The buffer layer (12) is semiconductor fluffy cotton.

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