Protective high-voltage cable

Abstract

The utility model discloses a protection type high-voltage cable, which comprises an outer insulation sleeve, an isolation sleeve, a metal shielding sleeve, an inner insulation sleeve and a metal conductive core, the isolation sleeve is sleeved in the outer insulation sleeve, a braid layer is fixedly arranged on the outer surface of the isolation sleeve, the metal shielding sleeve is sleeved and connected in the isolation sleeve, and the metal shielding sleeve is sleeved and connected with the inner insulation sleeve. A plurality of inner insulating sleeves are sleeved in the metal shielding sleeve, a plurality of metal conductive cores are fixedly sleeved in the plurality of inner insulating sleeves, and a moisture-proof buffer filling layer is filled between the plurality of inner insulating sleeves and the metal shielding sleeve. According to the high-voltage cable, the isolation sleeve and the metal shielding layer are arranged in the high-voltage cable, so that the high-voltage cable can well shield external signals, transmission of internal signals is prevented from being affected, and the cable has good structural strength through the metal guide wires inserted in the metal shielding layer and the braid layer braided on the outer wall of the isolation sleeve. And the phenomenon of local fracture caused by long-term tension influence is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cables, in particular to a protective high-voltage cable. Background Art

[0002] High voltage cable is a type of power cable, which refers to the power cable used to transmit power between 1kv-1000kv, and is mostly used in power transmission and distribution.

[0003] According to the patent number "CN212084727U", a high-voltage and high-strength cable is disclosed, including a high-voltage cable body, a conductor is arranged in the high-voltage cable body, an insulating filling layer is wrapped outside the conductor, and a circle of wrapping tape is arranged outside the insulating filling layer. When the high-voltage and high-strength cable is in use, the outside of the cable can be protected by a protective isolation ring. At the same time, the protective isolation ring is sleeved on the high-voltage cable. When installing the cable, the protective isolation ring can be moved so that the protective isolation rings of adjacent cables are in the same position. The protective isolation rings made of steel pipes squeeze each other and will not cause damage to the cable.

[0004] During the use of the above-mentioned high-voltage cable, although the protective isolation ring has a good protective effect, since there is no tensile structure inside, the high-voltage cable is pulled between two high-voltage towers during the long-distance installation. During the long-term pulling process, the high-voltage cable is easily affected by the tension, resulting in local deformation and breakage, which affects the service life of the high-voltage cable. Utility Model Content

[0005] The purpose of the utility model is to provide a protective high-voltage cable to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective high-voltage cable, comprising an outer insulating sleeve, an isolation sleeve, a metal shielding sleeve, an inner insulating sleeve and a metal conductor, the inner sleeve of the outer insulating sleeve is provided with an isolation sleeve, the isolation sleeve and the outer surface are fixedly provided with a braided layer, the inner sleeve of the isolation sleeve is connected to the metal shielding sleeve, the inner sleeve of the metal shielding sleeve is provided with multiple inner insulating sleeves, the inner sleeves of the multiple inner insulating sleeves are fixedly provided with multiple metal conductors, and a moisture-proof buffer filling layer is filled between the multiple inner insulating sleeves and the metal shielding sleeve.

[0007] Preferably, the braided layer is composed of a plurality of tin-copper braided strips, and the plurality of tin-copper braided strips are cross-arranged.

[0008] Preferably, a plurality of reinforcing rubber strips are fixedly provided at equal intervals on the outer wall of the metal shielding sleeve, and the top ends of the plurality of reinforcing rubber strips are fixedly connected to the inner wall of the isolation sleeve.

[0009] Preferably, a plurality of through holes are equidistantly provided inside the metal shielding sleeve, and a reinforcement guide wire is fixed inside each of the plurality of through holes.

[0010] Preferably, the moisture-proof buffer filling layer is a moisture-proof buffer sponge.

[0011] Preferably, the outer insulating sleeve and the inner insulating sleeve are both made of insulating rubber.

[0012] The technical effects and advantages of the utility model are as follows: the high-voltage cable has an isolation sleeve and a metal shielding layer inside, so that the high-voltage cable has better shielding of external signals to avoid affecting the transmission of internal signals, and the metal guide wires inserted inside the metal shielding layer and the braided layer woven on the outer wall of the isolation sleeve make the cable have better structural strength, reducing the influence of long-term tension and causing local fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a protective high-voltage cable.

[0014] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a protective high-voltage cable.

[0015] Figure 3 The utility model is a schematic diagram of the braided layer structure of a protective high-voltage cable.

[0016] In the figure: 1. Outer insulating sleeve; 2. Isolation sleeve; 3. Braided layer; 4. Metal shielding sleeve; 5. Reinforcement rubber strip; 6. Through hole; 7. Inner insulating sleeve; 8. Metal conductor core; 9. Moisture-proof buffer filling layer; 10. Tin-copper braided strip. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The utility model provides Figure 1-3A protective high-voltage cable is shown, comprising an outer insulating sleeve 1, an isolation sleeve 2, a metal shielding sleeve 4, an inner insulating sleeve 7 and a metal conductor 8. The outer insulating sleeve 1 is internally sleeved with an isolation sleeve 2, and a braided layer 3 is fixedly provided on the isolation sleeve 2 and the outer surface thereof, the isolation sleeve 2 is internally sleeved and connected with a metal shielding sleeve 4, the metal shielding sleeve 4 is internally sleeved with a plurality of inner insulating sleeves 7, and a plurality of metal conductors 8 are fixedly provided inside the plurality of inner insulating sleeves 7, and a moisture-proof buffer filling layer 9 is filled between the plurality of inner insulating sleeves 7 and the metal shielding sleeve 4. By adding the moisture-proof buffer filling layer 9, the high-voltage cable has better moisture-proof and buffering properties.

[0019] according to Figure 1 and Figure 2 As shown, the braided layer 3 is composed of a plurality of tin-copper braided strips 10, and the plurality of tin-copper braided strips 10 are cross-arranged. Through the arrangement of the braided layer 3, the tensile strength of the high-voltage cable is further increased.

[0020] A plurality of reinforcing rubber strips 5 are fixedly provided at equal intervals on the outer wall of the metal shielding sleeve 4 , and the top ends of the plurality of reinforcing rubber strips 5 are fixedly connected to the inner wall of the isolation sleeve 2 .

[0021] A plurality of through holes 6 are equidistantly formed inside the metal shielding sleeve 4 , and reinforcement guide wires are fixedly disposed inside the plurality of through holes 6 . The structural strength and tensile strength of the high-voltage cable are increased by the reinforcement guide wires.

[0022] The moisture-proof buffer filling layer 9 is a moisture-proof buffer sponge, which makes the high-voltage cable have a better moisture-proof buffer effect.

[0023] The outer insulating sleeve 1 and the inner insulating sleeve 7 are both made of insulating rubber, which has good tensile strength, corrosion resistance and high temperature resistance.

[0024] Working principle of the utility model: During the use of the protective high-voltage cable, the isolation sleeve 2 and the metal shielding sleeve 4 are arranged inside the cable, so that the electromagnetic shielding effect is good, and the interference of the transmission of the internal signal of the cable by the external electromagnetic waves is reduced. At the same time, the outer surface of the isolation sleeve 2 is fixed with a braided layer 3 and a metal guide wire inserted inside the metal shielding sleeve 4, so that the high-voltage cable has good structural strength and improves the tension of the high-voltage cable. In addition, the interior of the metal shielding sleeve 4 is filled with a moisture-proof buffer filling layer 9. Through the arrangement of the moisture-proof buffer filling layer 9, the high-voltage cable has good moisture-proof and extrusion effects, thereby improving the service life of the high-voltage cable.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A protective high-voltage cable, comprising an outer insulating sleeve (1), an isolation sleeve (2), a metal shielding sleeve (4), an inner insulating sleeve (7) and a metal conductor (8), characterized in that: The outer insulating sleeve (1) is internally sleeved with an isolation sleeve (2), the isolation sleeve (2) and the outer surface of which are fixedly provided with a braided layer (3), the isolation sleeve (2) is internally sleeved and connected with a metal shielding sleeve (4), the metal shielding sleeve (4) is internally sleeved with a plurality of inner insulating sleeves (7), the plurality of inner insulating sleeves (7) are internally fixedly sleeved with a plurality of metal conductors (8), and a moisture-proof buffer filling layer (9) is filled between the plurality of inner insulating sleeves (7) and the metal shielding sleeve (4).

2. A protective high-voltage cable according to claim 1, characterized in that: The braided layer (3) is composed of a plurality of tin-copper braided strips (10), and the plurality of tin-copper braided strips (10) are arranged crosswise.

3. A protective high-voltage cable according to claim 1, characterized in that: A plurality of reinforcing rubber strips (5) are fixedly arranged at equal intervals on the outer wall of the metal shielding sleeve (4), and the top ends of the plurality of reinforcing rubber strips (5) are fixedly connected to the inner wall of the isolation sleeve (2).

4. A protective high-voltage cable according to claim 1, characterized in that: A plurality of through holes (6) are equidistantly provided inside the metal shielding sleeve (4), and a reinforcement guide wire is fixed inside each of the plurality of through holes (6).

5. A protective high-voltage cable according to claim 1, characterized in that: The moisture-proof buffer filling layer (9) is a moisture-proof buffer sponge.

6. A protective high-voltage cable according to claim 1, characterized in that: The outer insulating sleeve (1) and the inner insulating sleeve (7) are both made of insulating rubber.

Images