Power cable

Abstract

The utility model relates to a power cable, which comprises a cable core and a PVC (polyvinyl chloride) sheath sleeved on the cable core, a plurality of annular grooves distributed at equal intervals are arranged on the PVC sheath, and friction reduction assemblies are mounted in the annular grooves; the friction reduction assembly comprises an annular ring, the annular ring is arranged in the annular groove, and the annular ring is sleeved with a lantern ring. According to the power cable provided by the utility model, the plurality of annular rings are arranged in the annular groove arranged on the PVC sheath, so that the overall strength of the PVC sheath is greatly enhanced, the PVC sheath is supported by the annular rings after being pressed, the PVC sheath does not generate huge deformation, and meanwhile, the annular rings are sleeved with the lantern rings which are rotatably connected, so that the PVC sheath is prevented from being deformed greatly. According to the technical scheme of the utility model, the sleeve ring is arranged at the bottom of the power cable, so that when the power cable is installed and dragged, the sleeve ring plays a role of a roller, and the sleeve ring at the bottom plays a role of a fulcrum for the PVC outer sheath, thereby effectively preventing the bottom of the PVC outer sheath from being worn due to dragging, and greatly enhancing the wear-resistant strength of the power cable.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a power cable. BACKGROUND

[0002] Power cable is used for transmission and distribution of electric energy cable, plays a key role in the backbone line of power system. They are often used in urban underground power grid, power station outgoing line, industrial and mining enterprise internal power supply and cross-river underwater power transmission line. Power cable is rich in variety, including low-voltage power cable, medium-voltage power cable, high-voltage power cable and so on, for different voltage grade and occasion power transmission and the basic structure of power cable usually includes conductor, insulating layer, shielding and sheath etc. The conductor is the core part of the cable, is responsible for transmission current, and its performance, conductivity, heat resistance, tensile strength and other characteristics are crucial to the overall performance of the cable, the insulating layer is used for isolating the conductor, preventing current leakage, ensuring the safe operation of the cable, the shielding layer is used for reducing electromagnetic interference, improving the transmission efficiency of the cable, and the sheath is used for protecting the cable from external environment damage.

[0003] And the current power cable will be dragged during installation, so that the sheath outside the cable will be worn and affect the use, if the sheath of the local aluminum alloy power cable is damaged, the performance of the internal waterproof layer is also easily affected.

[0004] Therefore, it is necessary to provide a new power cable to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of power cable.

[0006] The power cable provided by the utility model comprises:

[0007] Cable core, and

[0008] PVC sheath is sleeved on the cable core, and a plurality of annular grooves are formed in the PVC sheath, and a plurality of annular grooves are installed in each annular groove;

[0009] The friction reduction assembly comprises an annular ring, the annular ring is arranged in the annular groove and coaxially arranged with the annular groove, and a plurality of annular distribution, rotatingly connected sleeves are sleeved on the annular ring.

[0010] Preferably, a plurality of annular distribution, axial distribution fixed rods are fixedly installed on the annular ring, and the fixed rods are fixedly connected with the PVC sheath on both sides of the annular groove.

[0011] Preferably, the sleeves and the fixed rods on the annular ring are spaced apart.

[0012] Preferably, the cable core is fixedly sleeved with an insulating layer, and the insulating layer is made of fluororubber material.

[0013] Preferably, an outer wall of the insulating layer is fixedly sleeved with a conductor shielding layer, and the conductor shielding layer is made of semiconductor paper.

[0014] Preferably, an outer wall of the conductor shielding layer is fixedly embedded with a plurality of rubber strips distributed in a ring shape.

[0015] Preferably, an outer wall of the rubber strip is sleeved with a waterproof layer, and an outer wall of the waterproof layer is fixedly connected with an inner wall of the PVC sheath, and the waterproof layer is composed of a layer of semi-conductive non-woven fabric and high water-absorbing resin.

[0016] Compared with the related art, the power cable has the following beneficial effects:

[0017] The annular groove provided on the PVC sheath is provided with a plurality of annular rings, so that the overall strength of the PVC sheath is greatly enhanced, so that the PVC sheath is supported by the annular rings after being pressed, so that the PVC sheath will not deform greatly, and at the same time, the sleeve ring provided on the annular ring is rotatably connected, so that the sleeve ring has the effect of a roller when the power cable is installed and dragged, and the sleeve ring at the bottom has the effect of a fulcrum on the PVC outer sheath, thereby effectively preventing the bottom of the PVC outer sheath from being worn due to dragging, greatly enhancing the wear resistance of the power cable, and the friction reduction assembly also has the effect of protecting the PVC sheath, reducing the damage degree of the cable caused by gnawing of rodents. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic view of a preferred embodiment of the power cable provided by the utility model;

[0019] Figure 2 A structure schematic view of the friction reduction assembly shown in the figure; Figure 1

[0020] Figure 3 A sectional structure schematic view shown in the figure. Figure 1

[0021] Reference numerals in the figure: 1, cable core; 2, PVC sheath; 2a, annular groove; 3, friction reduction assembly; 31, annular ring; 32, sleeve ring; 33, fixed rod; 4, insulating layer; 5, conductor shielding layer; 6, rubber strip; 7, waterproof layer. DETAILED DESCRIPTION

[0022] ​​In order to make the utility model purposes, technical schemes and advantages more clearly, the following will be further described in detail in combination with the drawings and examples.

[0023] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0024] Please refer to Figures 1 to 3 The utility model discloses a kind of electric power cable, the electric power cable includes: cable core 1, PVC sheath 2 and friction reduction component 3.

[0025] In the embodiment of the utility model, please refer to Figure 1 And Figure 2 The cable core 1 is sleeved with PVC sheath 2, and a plurality of annular grooves 2a distributed at equal intervals are formed in the PVC sheath 2, and the annular groove 2a is provided with a friction reduction component 3;

[0026] And the friction reduction component 3 includes annular ring 31, the annular ring 31 is arranged in the annular groove 2a and coaxially arranged with the annular groove 2a, and a plurality of annularly distributed and rotationally connected sleeves 32 are sleeved on the annular ring 31, a plurality of annularly distributed and axially distributed fixed rods 33 are fixedly installed on the annular ring 31, and the fixed rod 33 is fixedly connected with the PVC sheath 2 on both sides of the annular groove 2a, and the sleeves 32 and the fixed rods 33 on the annular ring 31 are spaced apart from each other, and the sleeves 32 extend out of the annular groove 2a so that the sleeves 32 are in contact with the ground when the electric power cable is dragged and play a supporting role.

[0027] It should be noted that: because a plurality of annular rings 31 are arranged in the annular groove 2a formed in the PVC sheath 2, the overall strength of the PVC sheath 2 is greatly enhanced, so that the PVC sheath 2 is supported by the annular ring 31 after being pressed, so that the PVC sheath 2 will not deform greatly, and because the rotationally connected sleeves 32 are sleeved on the annular ring 31, the sleeves 32 play the effect of a roller when the electric power cable is installed and dragged, and the sleeves 32 at the bottom play the effect of a fulcrum on the PVC outer sheath 2, thereby effectively preventing the bottom of the PVC outer sheath 2 from being worn due to dragging, greatly improving the wear resistance of the electric power cable, and the friction reduction component 3 also plays a protective role on the PVC sheath 2, reducing the damage degree of the cable caused by gnawing by rodents.

[0028] In the embodiment of the utility model, please refer to Figure 3The cable core 1 is fixedly sleeved with an insulating layer 4 made of fluorine rubber, and the outer wall of the insulating layer 4 is fixedly sleeved with a conductor shielding layer 5 made of semiconductor paper, the outer wall of the conductor shielding layer 5 is fixedly embedded with a plurality of rubber strips 6 distributed in a ring shape, the outer circle of the rubber strip 6 is sleeved with a waterproof layer 7, and the outer wall of the waterproof layer 7 is fixedly connected with the inner wall of the PVC sheath 2.

[0029] It should be noted that the conductor shielding layer 5 arranged in the PVC sheath 2 can prevent the signal quality of the cable from being reduced due to external interference when the cable transmits signals, and the rubber strips 6 arranged can reduce the deformation degree of the PVC sheath 2 after being pressed, and the waterproof layer 7 arranged in the PVC sheath 2 can improve the waterproof effect of the cable.

[0030] The working principle of the power cable is as follows:

[0031] Due to the fact that a plurality of annular rings 31 are arranged in the annular groove 2a formed in the PVC sheath 2, the overall strength of the PVC sheath 2 is greatly enhanced, so that the PVC sheath 2 is supported by the annular rings 31 after being pressed, and the PVC sheath 2 will not be greatly deformed, and due to the fact that the sleeve ring 32 is rotatably sleeved on the annular ring 31, the sleeve ring 32 plays the effect of a roller when the power cable is installed and dragged, and the sleeve ring 32 at the bottom plays the effect of a fulcrum on the PVC outer sheath 2, thereby effectively preventing the bottom of the PVC outer sheath 2 from being abraded due to dragging, greatly enhancing the wear resistance of the power cable, and the reducing friction assembly 3 also plays a protective role on the PVC sheath 2, reducing the damage degree of the cable caused by gnawing of rodents, and the conductor shielding layer 5 arranged in the PVC sheath 2 can prevent the signal quality of the cable from being reduced due to external interference when the cable transmits signals, and the rubber strips 6 arranged can reduce the deformation degree of the PVC sheath 2 after being pressed, and the waterproof layer 7 arranged in the PVC sheath 2 can improve the waterproof effect of the cable.

[0032] The circuit and the control involved in the utility model are prior art, and will not be described in detail here.

[0033] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion made by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A power cable, characterized in that, Include: Cable core (1), and The PVC sheath (2) is sleeved on the cable core (1), and a plurality of annular grooves (2a) are arranged on the PVC sheath (2), and a friction reduction assembly (3) is arranged in each annular groove (2a). Wherein the friction reduction assembly (3) comprises an annular ring (31), the annular ring (31) is arranged in the annular groove (2a) and coaxially arranged with the annular groove (2a), and the annular ring (31) is sleeved with a plurality of annular distribution, rotating connection ring (32).

2. The power cable according to claim 1, characterized in that, The annular ring (31) is fixedly installed with a plurality of annular distribution, axial distribution fixed rod (33), and the fixed rod (33) is fixedly connected with the PVC sheath (2) on both sides of the annular groove (2a).

3. The power cable according to claim 2, characterized in that, The ring (32) and the fixed rod (33) on the annular ring (31) are spaced apart from each other.

4. The power cable according to claim 1, characterized in that, The cable core (1) is fixedly sleeved with an insulating layer (4), and the insulating layer (4) is made of fluorine rubber material.

5. The power cable according to claim 4, characterized in that, The outer wall of the insulating layer (4) is fixedly sleeved with a conductor shielding layer (5), and the conductor shielding layer (5) is made of semiconductor paper.

6. The power cable according to claim 5, characterized in that, The outer wall of the conductor shielding layer (5) is fixedly embedded with a plurality of annularly distributed rubber strips (6).

7. The power cable according to claim 6, characterized in that, The outer circle of the rubber strip (6) is sleeved with a waterproof layer (7), and the outer wall of the waterproof layer (7) is fixedly connected with the inner wall of the PVC sheath (2), and the waterproof layer (7) is composed of a layer of semi-conductive non-woven fabric and high water absorption resin.

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