110kV high-voltage polypropylene power cable

Abstract

The utility model relates to the field of power cables, and discloses a 110kV high-voltage polypropylene power cable, which comprises a conductor, the outer wall of the conductor is provided with a shielding mechanism, the shielding mechanism comprises a graphite shielding layer, the outer wall of the graphite shielding layer is tightly attached with an insulating layer, the outer wall of the insulating layer is tightly attached with an aluminum tape shielding layer, and the outer wall of the aluminum tape shielding layer is tightly attached with an insulating layer. An isolation mechanism is arranged on the outer wall of the shielding mechanism, the isolation mechanism comprises fiber filler, the outer wall of the fiber filler is fixedly connected with a rubber sleeve, a protection mechanism is arranged on the outer wall of the isolation mechanism, and the protection mechanism comprises a protection leather sheath. According to the utility model, the high-voltage polypropylene power cable is provided with the isolation mechanism, and the fiber filler and the rubber sleeve are arranged between the protection mechanism and the internal cable conductor, so that the stability and the roundness of the cable structure are maintained, and the force applied to the protection mechanism is buffered and absorbed; and the use safety of the cable is further improved.

Description

Technical Field

[0001] The utility model relates to the field of power cables, in particular to an 110kV high-voltage polypropylene power cable. Background Art

[0002] An 110kV high-voltage polypropylene power cable refers to a cable designed to transmit 110 kV of extra-high voltage electrical energy, and its insulating material mainly uses polypropylene. The 110kV high-voltage polypropylene power cable means that the cable uses polypropylene as the insulating material, can withstand a voltage of 110 kV, and is suitable for high-voltage power transmission networks.

[0003] However, most traditional high-voltage polypropylene power cables adopt a single-layer structure, which makes the voltage resistance and tensile resistance effects of the power cable poor. As a result, the power cable may be damaged accidentally during use, thereby affecting the service life of the power cable.

[0004] Therefore, those skilled in the art have provided an 110kV high-voltage polypropylene power cable to solve the problems raised in the above background art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art, and an 110kV high-voltage polypropylene power cable is proposed. Compared with most traditional high-voltage polypropylene power cables, the high-voltage polypropylene power cable is respectively provided with a protection mechanism and an outer layer mechanism. The cable is protected from external mechanical damage through the provided support steel ring and wound steel strip, reducing damage caused by pressure friction or gnawing, etc., and also improving the tensile strength of the cable, enabling the cable to withstand greater mechanical stress during installation and operation, thereby improving the voltage resistance and tensile resistance effects of the cable, enhancing the safety of the cable during use, and the provided waterproof layer and wear-resistant layer can reduce damage caused by corrosion and friction, thereby further reducing the damage suffered by the cable, and thus enhancing the service life of the cable.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An 110kV high-voltage polypropylene power cable includes a conductor, a shielding mechanism is arranged on the outer wall of the conductor, the shielding mechanism includes a graphite shielding layer, an insulating layer is closely attached to the outer wall of the graphite shielding layer, and an aluminum tape shielding layer is closely attached to the outer wall of the insulating layer;

[0008] An isolation mechanism is arranged on the outer wall of the shielding mechanism, the isolation mechanism includes fiber filler, and a rubber sleeve is fixedly connected to the outer wall of the fiber filler;

[0009] A protective mechanism is provided on the outer wall of the isolation mechanism. The protective mechanism includes a protective leather sleeve, and a plurality of support steel rings are fixedly connected to the outer wall of the protective leather sleeve. A plurality of steel belts are closely attached to the outer wall of the support steel rings;

[0010] An outer layer mechanism is provided on the outer wall of the protective mechanism. The outer layer mechanism includes a waterproof layer, and a wear-resistant layer is fixedly connected to the outer wall of the waterproof layer.

[0011] Through the above technical solution, compared with most traditional high-voltage polypropylene power cables, this high-voltage polypropylene power cable is provided with an isolation mechanism. By arranging fiber filler and rubber sleeve between the protective mechanism and the internal cable conductor, the stability and roundness of the cable structure are maintained, and then the force received by the protective mechanism is buffered and absorbed, so that the safety of the cable during use is further improved.

[0012] Further, the conductor is fixedly connected to the shielding mechanism, the shielding mechanism is fixedly connected to the isolation mechanism, the isolation mechanism is fixedly connected to the protective mechanism, and the protective mechanism is fixedly connected to the outer layer mechanism;

[0013] Further, the material of the insulating layer is polypropylene;

[0014] Through the above technical solution, the polypropylene provided has good electrical insulation performance, chemical stability, mechanical strength and heat resistance. Polypropylene is a thermoplastic polymer.

[0015] Further, the aluminum tape shielding layer is fixedly connected to the fiber filler;

[0016] Through the above technical solution, the isolation mechanism can buffer and protect the shielding mechanism and isolate it from contact with the outside world.

[0017] Further, the rubber sleeve is fixedly connected to the protective leather sleeve;

[0018] Through the above technical solution, the protective mechanism can provide protection against voltage and tensile forces for the isolation mechanism.

[0019] Further, the steel belt is closely attached to the waterproof layer;

[0020] Through the above technical solution, the outer layer mechanism can provide corrosion-resistant protective isolation for the protective mechanism.

[0021] Further, a plurality of conductors are fixedly connected inside the fiber filler;

[0022] Through the above technical solution, the power cable can transmit signals or electricity through a plurality of conductors.

[0023] Furthermore, the outer walls of the support steel ring and the protective leather sheath are both closely attached to the steel strip;

[0024] Through the above technical solution, the protective leather sheath can connect multiple support steel rings together and support the steel strip.

[0025] The utility model has the following beneficial effects:

[0026] 1. An 110kV high-voltage polypropylene power cable proposed by the utility model. Compared with most traditional high-voltage polypropylene power cables, this high-voltage polypropylene power cable is respectively provided with a protection mechanism and an outer layer mechanism. The support steel rings and the wound steel strip protect the cable from external mechanical damage, reduce damage caused by pressure friction or gnawing, etc., and also improve the tensile strength of the cable, enabling the cable to withstand greater mechanical stress during installation and operation, so that the voltage resistance and tensile resistance effects of the cable are both improved, enhancing the safety of the cable during use. Moreover, the waterproof layer and wear-resistant layer provided can reduce damage caused by corrosion and friction, further reducing the damage suffered by the cable, and thus extending the service life of the cable.

[0027] 2. An 110kV high-voltage polypropylene power cable proposed by the utility model. Compared with most traditional high-voltage polypropylene power cables, this high-voltage polypropylene power cable is provided with an isolation mechanism. By arranging fiber filler and rubber sleeve between the protection mechanism and the internal cable conductor, the stability and roundness of the cable structure are maintained, and the force received by the protection mechanism is buffered and absorbed, further enhancing the safety of the cable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an 110kV high-voltage polypropylene power cable proposed by the utility model;

[0029] Figure 2 is a schematic structural diagram of the outer layer mechanism of an 110kV high-voltage polypropylene power cable proposed by the utility model;

[0030] Figure 3 is a schematic structural diagram of the protection mechanism of an 110kV high-voltage polypropylene power cable proposed by the utility model;

[0031] Figure 4 is a schematic structural diagram of the conductor of an 110kV high-voltage polypropylene power cable proposed by the utility model;

[0032] Figure 5 is a schematic structural diagram of the shielding mechanism of an 110kV high-voltage polypropylene power cable proposed by the utility model.

[0033] Legend Explanation:

[0034] 1. Conductor; 2. Shielding mechanism; 201. Graphite shielding layer; 202. Insulating layer; 203. Aluminum tape shielding layer; 3. Isolation mechanism; 301. Fiber filler; 302. Rubber sleeve; 4. Protection mechanism; 401. Protection leather sleeve; 402. Support steel ring; 403. Steel strip; 5. Outer layer mechanism; 501. Waterproof layer; 502. Wear-resistant layer. Specific implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0036] Refer to Figures 1-5 , an embodiment provided by the present invention:

[0037] An 110 kV high-voltage polypropylene power cable includes a conductor 1. A shielding mechanism 2 is arranged on the outer wall of the conductor 1. The shielding mechanism 2 includes a graphite shielding layer 201. An insulating layer 202 is closely attached to the outer wall of the graphite shielding layer 201. An aluminum tape shielding layer 203 is closely attached to the outer wall of the insulating layer 202;

[0038] An isolation mechanism 3 is arranged on the outer wall of the shielding mechanism 2. The isolation mechanism 3 includes a fiber filler 301. A rubber sleeve 302 is fixedly connected to the outer wall of the fiber filler 301;

[0039] A protection mechanism 4 is arranged on the outer wall of the isolation mechanism 3. The protection mechanism 4 includes a protection leather sleeve 401. A plurality of support steel rings 402 are fixedly connected to the outer wall of the protection leather sleeve 401. A plurality of steel strips 403 are closely attached to the outer wall of the support steel rings 402;

[0040] An outer layer mechanism 5 is arranged on the outer wall of the protection mechanism 4. The outer layer mechanism 5 includes a waterproof layer 501. A wear-resistant layer 502 is fixedly connected to the outer wall of the waterproof layer 501. The conductor 1 and the shielding mechanism 2 are fixedly connected. The shielding mechanism 2 and the isolation mechanism 3 are fixedly connected. The isolation mechanism 3 and the protection mechanism 4 are fixedly connected. The protection mechanism 4 and the outer layer mechanism 5 are fixedly connected.

[0041] Compared with traditional majority of high-voltage polypropylene power cables, this high-voltage polypropylene power cable is respectively provided with a protection mechanism 4 and an outer layer mechanism 5. Through the provided support steel ring 402 and the wound steel strip 403, the cable is protected from external mechanical damage, reducing damage caused by pressure friction or gnawing, etc., and also improving the tensile strength of the cable, enabling the cable to withstand greater mechanical stress during installation and operation, thus enhancing the pressure resistance and tensile resistance effects of the cable, improving the safety of the cable in use. Moreover, the provided waterproof layer 501 and wear-resistant layer 502 can reduce damage caused by corrosion and friction, further reducing the damage suffered by the cable, and thus enhancing the service life of the cable.

[0042] The material of the insulating layer 202 is polypropylene. The provided polypropylene is a thermoplastic polymer with good electrical insulation performance, chemical stability, mechanical strength and heat resistance. The aluminum tape shielding layer 203 and the fiber filler 301 are fixedly connected, so that the isolation mechanism 3 can buffer and protect the shielding mechanism 2 and isolate it from the outside. The rubber sleeve 302 and the protective leather sleeve 401 are fixedly connected, so that the protection mechanism 4 can provide pressure resistance and tensile resistance protection for the isolation mechanism 3. The steel strip 403 and the waterproof layer 501 are closely attached, so that the outer layer mechanism 5 can provide corrosion-resistant protection and isolation for the protection mechanism 4. A plurality of conductors 1 are fixedly connected inside the fiber filler 301, so that the power cable can transmit signals or electricity through the plurality of conductors 1. The outer walls of the support steel ring 402 and the protective leather sleeve 401 are both closely attached to the steel strip 403, so that the protective leather sleeve 401 can connect the plurality of support steel rings 402 together and support the steel strip 403.

[0043] Working principle: The provided shielding mechanism 2 reduces the corona discharge of the conductor 1 under the action of the graphite shielding layer 201 and protects the insulating layer 202 made of polypropylene from the influence of electrical stress. Under the action of the aluminum tape shielding layer 203, it is used to protect the insulating layer 202 from external electromagnetic interference. Under the action of the isolation mechanism 3, the influence caused by the outside is reduced. Finally, the provided protection mechanism 4 and outer layer mechanism 5 are used for safety protection.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A 110 kV high voltage polypropylene power cable, comprising a conductor (1), characterized in that: The outer wall of the conductor (1) is provided with a shielding mechanism (2), the shielding mechanism (2) comprises a graphite shielding layer (201), the outer wall of the graphite shielding layer (201) is tightly attached to an insulating layer (202), and the outer wall of the insulating layer (202) is tightly attached to an aluminum tape shielding layer (203); An isolation mechanism (3) is provided on the outer wall of the shielding mechanism (2), wherein the isolation mechanism (3) comprises a fiber filler (301), and a rubber sleeve (302) is fixedly connected to the outer wall of the fiber filler (301); The outer wall of the isolation mechanism (3) is provided with a protection mechanism (4), the protection mechanism (4) comprises a protection leather cover (401), the outer wall of the protection leather cover (401) is fixedly connected with a plurality of support steel rings (402), and the outer wall of the support steel ring (402) is tightly fitted with a plurality of steel belts (403); The outer wall of the protection mechanism (4) is provided with an outer layer mechanism (5), the outer layer mechanism (5) comprises a waterproof layer (501), and the outer wall of the waterproof layer (501) is fixedly connected with a wear-resistant layer (502).

2. A 110kV high voltage polypropylene power cable according to claim 1, characterized in that: The conductor (1) and the shielding mechanism (2) are fixedly connected, the shielding mechanism (2) and the isolation mechanism (3) are fixedly connected, the isolation mechanism (3) and the protection mechanism (4) are fixedly connected, and the protection mechanism (4) and the outer layer mechanism (5) are fixedly connected.

3. A 110kV high voltage polypropylene power cable according to claim 1, characterized in that: The insulating layer (202) is made of polypropylene.

4. A 110 kV high voltage polypropylene power cable according to claim 1, characterized in that: The aluminum tape shielding layer (203) and the fiber filler (301) are fixedly connected.

5. A 110 kV high voltage polypropylene power cable according to claim 1, characterized in that: The rubber sleeve (302) and the protective leather sleeve (401) are fixedly connected.

6. A 110 kV high voltage polypropylene power cable according to claim 1, characterized in that: The steel belt (403) and the waterproof layer (501) are tightly fitted.

7. A 110 kV high voltage polypropylene power cable according to claim 1, characterized in that: A plurality of conductors (1) are fixedly connected inside the fiber filler (301).

8. The 110 kV high voltage polypropylene power cable according to claim 1, characterized in that: The outer walls of the supporting steel ring (402) and the protective leather cover (401) are both tightly fitted to the steel belt (403).

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