Cable

Abstract

The utility model discloses a cable, which belongs to the technical field of cables and comprises three conductor bodies, the outer side of each conductor body is provided with a conductor shielding part, the inner wall of each conductor shielding part is in contact with the outer surface of the conductor body, the outer side of each conductor shielding part is provided with an insulating layer, and the insulating layer is arranged on the outer side of the conductor shielding part. The inner wall of each insulating layer is in contact with the outer surface of the conductor shielding part, the outer side of each insulating layer is provided with an insulating shielding part, the inner wall of each insulating shielding part is in contact with the outer surface of the insulating layer, and the outer side of each insulating shielding part is provided with a copper strip shielding part. The inner wall of each copper strip shielding part is in contact with the outer surface of the insulation shielding part, and the outer surfaces of the three copper strip shielding parts are jointly and fixedly connected with a filler. According to the cable, the copper strip shielding part, the filler, the inner sheath, the armor, the outer sheath and the like are arranged for multi-layer protection, so that the cable has relatively high underground survivability and is not easy to break due to different natural sinking fall of land.

Description

Technical Field

[0001] The present application belongs to the field of cable technology, and in particular relates to a cable. Background Art

[0002] Cables are a general term for items such as optical cables and electrical cables. Cables have many uses, mainly for controlling installation, connecting equipment, transmitting electricity, and other multiple functions. They are common and indispensable in daily life. Since cables are charged, installation requires special caution.

[0003] Generally, cables are buried underground or installed inside sewer pipes, and the environment is relatively harsh. Therefore, the cables' compression and tensile strength are greatly tested. Some cables are subjected to greater pressure and tension due to the natural subsidence of the land, which may break the internal conductor and cause cable failure.

[0004] To this end, we propose a cable to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve the problem of poor compression and tensile strength in the prior art and to propose a cable.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A cable comprises three conductor bodies, each of which is provided with a conductor shielding portion on the outside, the inner wall of each conductor shielding portion is in contact with the outer surface of the conductor body, each of which is provided with an insulating layer on the outside, the inner wall of each insulating layer is in contact with the outer surface of the conductor shielding portion, each of which is provided with an insulating shielding portion on the outside, the inner wall of each insulating shielding portion is in contact with the outer surface of the insulating layer, each of which is provided with a copper tape shielding portion on the outside, the inner wall of each copper tape shielding portion is in contact with the outer surface of the insulating shielding portion, and the outer surfaces of the three copper tape shielding portions are fixedly connected with a filler.

[0008] Preferably, a wrapping tape is provided on the outer side of the filler, and the inner wall of the wrapping tape is in contact with the outer surface of the filler.

[0009] Preferably, an inner sheath is provided on the outer side of the wrapping tape, and the inner wall of the inner sheath is in contact with the outer surface of the wrapping tape.

[0010] Preferably, an armor is provided on the outer side of the inner sheath, and the inner wall of the armor is in contact with the outer surface of the inner sheath.

[0011] Preferably, a fireproof layer is provided on the outer side of the armor, and the inner wall of the fireproof layer is in contact with the outer surface of the armor.

[0012] Preferably, an oxygen barrier layer is provided on the outer side of the fireproof layer, and the inner wall of the oxygen barrier layer is in contact with the outer surface of the fireproof layer.

[0013] Preferably, a water-blocking layer is provided on the outer side of the oxygen-isolating layer, and the inner wall of the water-blocking layer is in contact with the outer surface of the oxygen-isolating layer.

[0014] Preferably, an outer sheath is provided on the outer side of the water-blocking layer, and the inner wall of the outer sheath is in contact with the outer surface of the water-blocking layer.

[0015] In summary, the technical effects and advantages of this application are:

[0016] By arranging the conductor body, conductor shielding part, insulation layer, insulation shielding part, copper tape shielding part and filler to cooperate with each other, the innermost conductor body can be effectively protected and is not easily broken by external pressure or tension. The conductor body is in a woven twist shape and has a certain tensile strength. The outer surface of each group of conductor bodies is provided with a conductor shielding part, an insulation layer and an insulation shielding part, which is used to prevent the conductor bodies from interfering with each other. Then the copper tape shielding part is applied on the outermost side, which not only has the effect of signal shielding, but also has a strong safety protection function. The three groups of conductor bodies themselves have strong compressive and tensile properties. With the filler arranged on the outside, the three groups of conductor bodies can be tightly shaped and filled. The use of wrapping tape can prevent the cable from being loose. Finally, the use of inner sheath can prevent the insulation layer from moisture, mechanical damage, light and chemical corrosive media, so that the cable has strong underground survivability and is not easily broken due to external pressure or tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of the outer sheath of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the armor of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner sheath of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the conductor body of the utility model.

[0021] In the figure: 1. Conductor body; 2. Conductor shield; 3. Insulation layer; 4. Insulation shield; 5. Copper tape shield; 6. Filler; 7. Wrapping tape; 8. Inner sheath; 9. Armor; 10. Fireproof layer; 11. Oxygen barrier layer; 12. Water barrier layer; 13. Outer sheath. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-4 A cable comprises three conductor bodies 1, each conductor body 1 is provided with a conductor shielding part 2 on the outside, the inner wall of each conductor shielding part 2 is in contact with the outer surface of the conductor body 1, each conductor shielding part 2 is provided with an insulating layer 3 on the outside, the inner wall of each insulating layer 3 is in contact with the outer surface of the conductor shielding part 2, each insulating layer 3 is provided with an insulating shielding part 4 on the outside, the inner wall of each insulating shielding part 4 is in contact with the outer surface of the insulating layer 3, each insulating shielding part 4 is provided with a copper tape shielding part 5 on the outside, the inner wall of each copper tape shielding part 5 is in contact with the outer surface of the insulating shielding part 4, the outer surfaces of the three copper tape shielding parts 5 are fixedly connected with a filler 6, the outer side of the filler 6 is provided with a wrapping tape 7, the inner wall of the wrapping tape 7 is in contact with the outer surface of the filler 6, the wrapping tape 7 makes the cable cylindrical, avoids the cable from being loose, and prevents the data signal from being affected, and acts as an insulating layer 3 between the conductor and the shielded cable.

[0024] An inner sheath 8 is provided on the outside of the wrapping tape 7. The inner wall of the inner sheath 8 is in contact with the outer surface of the wrapping tape 7. The inner sheath 8 is a protective covering layer wrapped around the cable insulation to prevent the insulation layer 3 from moisture, mechanical damage, light and chemically corrosive media, etc., and can also allow short-circuit current to flow.

[0025] The outer side of the inner sheath 8 is provided with armor 9 , and the inner wall of the armor 9 contacts the outer surface of the inner sheath 8 . The armor 9 enhances mechanical protection such as tensile strength and compressive strength to extend the service life.

[0026] A fireproof layer 10 is provided on the outside of the armor 9. The inner wall of the fireproof layer 10 contacts the outer surface of the armor 9. The fireproof layer 10 inhibits and blocks the propagation and spread of flames, thereby protecting the wires and cables.

[0027] An oxygen barrier layer 11 is provided on the outside of the fireproof layer 10. The inner wall of the oxygen barrier layer 11 is in contact with the outer surface of the fireproof layer 10. The oxygen barrier layer 11 isolates the insulating organic matter from the contact with the outside air, and finally enables the cable to achieve the purpose of self-extinguishing, thereby greatly improving the flame retardant level, which can reach Class A flame retardant level.

[0028] A water-blocking layer 12 is provided on the outside of the oxygen-barrier layer 11. The inner wall of the water-blocking layer 12 is in contact with the outer surface of the oxygen-barrier layer 11. Compared with petroleum jelly and active water-blocking materials, the basic characteristics of the water-blocking layer 12 are strong water absorption and high expansion rate. It can absorb water strongly and expand rapidly to form a gel-like substance to block the water seepage channel, thereby ensuring the safety of cable insulation.

[0029] An outer sheath 13 is provided outside the water blocking layer 12. The inner wall of the outer sheath 13 contacts the outer surface of the water blocking layer 12. The outer sheath 13 is the most important barrier for protecting the internal structure and protecting the cable from mechanical damage during and after installation.

[0030] The working principle of the present invention is as follows: when in use, the conductor body 1 is first woven into a twisted shape, which itself has a certain tensile strength. The outer surface of each group of conductor bodies 1 is provided with a conductor shielding portion 2, an insulating layer 3, and an insulating shielding portion 4, which prevent the conductor bodies 1 from interfering with each other. Then, a copper tape shielding portion 5 is provided on the outermost surface, which not only has a signal shielding effect but also has a strong safety protection function. Furthermore, the three groups of conductor bodies 1 themselves have strong compressive and tensile resistance, and with the help of the externally provided filler 6, the three groups of conductor bodies 1 can be tightly shaped and filled.

[0031] The use of the external wrapping tape 7 can prevent the cable from becoming loose, and the use of the inner sheath 8 can prevent the insulation layer 3 from being damp, mechanically damaged, and exposed to light and chemically corrosive media. The armor 9 is used to enhance mechanical protection such as tensile strength and compressive strength to extend the service life. The fireproof layer 10 is used to suppress and block the spread and spread of flames, thereby protecting the wires and cables. The oxygen barrier 11 is used to isolate the insulating organic matter from the contact with the outside air, and ultimately the cable can achieve the purpose of self-extinguishing, thereby greatly improving the flame retardant level, which can reach Class A flame retardant level. The basic characteristics of the water-blocking layer 12 compared to petroleum jelly and active water-blocking materials are strong water absorption and high expansion rate. It can strongly absorb water and expand rapidly to form a gel-like substance to block the water seepage channel, thereby ensuring the safety of cable insulation. The outer sheath 13 is used to protect the most important barrier for the safety of the internal structure, protecting the cable from mechanical damage during and after installation, so that the cable has strong underground survival ability and is not easily broken by external pressure or tension.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable comprising three conductor bodies (1), characterized in that: Each conductor body (1) is provided with a conductor shielding portion (2) on the outside, the inner wall of each conductor shielding portion (2) is in contact with the outer surface of the conductor body (1), each conductor shielding portion (2) is provided with an insulating layer (3) on the outside, the inner wall of each insulating layer (3) is in contact with the outer surface of the conductor shielding portion (2), each insulating layer (3) is provided with an insulating shielding portion (4) on the outside, the inner wall of each insulating shielding portion (4) is in contact with the outer surface of the insulating layer (3), each insulating shielding portion (4) is provided with a copper tape shielding portion (5) on the outside, the inner wall of each copper tape shielding portion (5) is in contact with the outer surface of the insulating shielding portion (4), and the outer surfaces of the three copper tape shielding portions (5) are fixedly connected with a filler (6).

2. A cable according to claim 1, characterized in that: A wrapping tape (7) is provided on the outside of the filler (6), and the inner wall of the wrapping tape (7) is in contact with the outer surface of the filler (6).

3. A cable according to claim 2, characterized in that: An inner sheath (8) is provided on the outer side of the wrapping belt (7), and the inner wall of the inner sheath (8) is in contact with the outer surface of the wrapping belt (7).

4. A cable according to claim 3, characterized in that: An armor (9) is provided on the outer side of the inner sheath (8), and the inner wall of the armor (9) is in contact with the outer surface of the inner sheath (8).

5. A cable according to claim 4, characterized in that: A fireproof layer (10) is provided on the outer side of the armor (9), and the inner wall of the fireproof layer (10) is in contact with the outer surface of the armor (9).

6. A cable according to claim 5, characterized in that: An oxygen barrier layer (11) is provided on the outer side of the fireproof layer (10), and the inner wall of the oxygen barrier layer (11) is in contact with the outer surface of the fireproof layer (10).

7. A cable according to claim 6, characterized in that: A water-blocking layer (12) is provided on the outer side of the oxygen-isolating layer (11), and the inner wall of the water-blocking layer (12) is in contact with the outer surface of the oxygen-isolating layer (11).

8. The cable according to claim 7, characterized in that: An outer sheath (13) is provided on the outer side of the water-blocking layer (12), and the inner wall of the outer sheath (13) is in contact with the outer surface of the water-blocking layer (12).

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