CN216250138U

CN216250138U - Tensile-pulling-resistant fire-resistant power cable

Info

Publication number: CN216250138U
Application number: CN202122395980.8U
Authority: CN
Inventors: 蒋军熙; 卫宇
Original assignee: Jiangsu Kaida Cable Co ltd
Current assignee: Jiangsu Kaida Cable Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-08
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a tensile-pulling-resistant fireproof power cable which comprises an outer sheath, a fixing ring, a copper strip, a reinforcing piece, a protective layer, an inner sheath, a filling layer, a hoop and a core layer, wherein the outer sheath, the fixing ring, the copper strip, the protective layer, the inner sheath, the filling layer, the hoop and the core layer are sequentially arranged from outside to inside and are tightly connected, one end of the reinforcing piece is fixedly connected with the outer sheath, the other end of the reinforcing piece is fixedly connected with the outer wall of the hoop, a cavity is formed in the middle of the outer sheath, a steel strip is embedded in the cavity, and the protective layer consists of a woven layer, a fireproof layer and an isolating layer. According to the utility model, the tensile strength of the device is effectively increased by arranging the steel belt, the fixing ring, the hoop and the reinforcing piece, so that the use stability of the device is better, and the fireproof performance of the device is improved by arranging the fireproof layer and the isolating layer, so that the fireproof protection effect of the device on the core layer is improved.

Description

Tensile-pulling-resistant fire-resistant power cable

Technical Field

The utility model relates to the technical field of cable correlation, in particular to a tensile-pulling-resistant fire-resistant power cable.

Background

The power cable is used as a cable product commonly used for transmitting and distributing high-power electric energy in a main line of a power system at the present stage, the main basic structure of the power cable consists of four parts, namely a wire core, an insulating layer, a shielding layer and a protective layer, and the power cable needs to be pulled in the erection process, so the power cable with better tensile strength is mostly used at the present stage.

The prior art has the following defects: the tensile that adopts at present drags power cable all promotes the realization to the bulk strength of device through installing the armor additional in the sheath inboard, and this kind of structure is inside for existing alone at the cable, can not connect into a whole with whole cable structure, and then leads to the whole of device to resist to drag and draw intensity comparatively general, and then influence the stability in use of device.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a fire-resistant power cable with a tensile strength, so as to solve the above problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fire-resistant power cable is dragged to tensile, includes oversheath, solid fixed ring, copper strips, reinforcement, protective layer, inner sheath, filling layer, hoop and sandwich layer, oversheath, solid fixed ring, copper strips, protective layer, inner sheath, filling layer, hoop and sandwich layer set gradually and closely link to each other by outer to interior, reinforcement one end and oversheath fixed connection, reinforcement other end and hoop outer wall fixed connection, the cavity has been seted up to the oversheath intermediate position, the inside steel band that is equipped with that inlays of cavity, the protective layer comprises weaving layer, flame retardant coating, isolation layer, just weaving layer, flame retardant coating, isolation layer set gradually by outer to interior between copper strips and inner sheath, and closely link to each other, the sandwich layer comprises boundary belt, insulating shield, insulating layer, conductor shield and copper core conductor, boundary belt, insulating shield, The insulating layer, the conductor shielding layer and the copper core are arranged on the inner side of the hoop in sequence from outside to inside.

As a further preferred mode of the technical scheme, the fixing rings are arranged in a plurality, and the fixing rings are uniformly arranged on the outer wall of the copper strip.

As a further preferred feature of the present technical solution, the cross-section of the reinforcement is of an i-shaped structure, and one end of the reinforcement is fixedly connected to the outer wall of the steel band at the middle position of the outer sheath.

As a further preferred aspect of the present invention, a plurality of the reinforcing members are provided, and the plurality of the reinforcing members are uniformly provided between the outer sheath and the hoop.

As a further preferable mode of the present invention, the hoop is provided in plural, and the plural hoops are uniformly provided on the outer wall of the core layer along the axial direction of the core layer.

As a further preferred mode of the present technical solution, the fire-proof layer is formed by mutually twisting glass fibers and ceramic fibers, and the thickness of the fire-proof layer is consistent with that of the isolation layer.

As a further preferred aspect of the present technical solution, the isolation layer is uniformly filled between the fire-proof layer and the inner sheath with magnesium hydroxide particles as a filler.

The utility model provides a tensile-pulling-resistant fireproof power cable which has the following beneficial effects:

(1) by arranging the steel belt, the fixing ring, the hoop and the reinforcing piece, when in use, the device strengthens the overall strength of the outer sheath by the steel belt on the inner side of the outer sheath, and the fixing ring is additionally arranged between the inner wall of the outer sheath and the copper strip, so that the integral strength of the device is further improved, the integrity of the device is increased, thereby improving the tensile strength of the device and ensuring that the device has stronger stability, and by adding the hoop on the outer wall of the core layer, thereby the integrity of the core layer is better, and the integrity effect of the device is also improved by matching with the connection of the reinforcing piece, thereby further improving the tensile strength of the device, and simultaneously, the steel belt and the hoop are fixedly connected by using the I-shaped structural reinforcement to further improve the integrity of the device, thereby further increasing the tensile strength of the device and further improving the stability of the device.

(2) According to the fireproof device, the fireproof performance of the fireproof device can be improved through the arrangement of the fireproof layer and the isolation layer, so that the fireproof effect of the fireproof device is better, and meanwhile, the magnesium hydroxide particles are uniformly filled between the fireproof layer and the inner sheath as filling materials, so that an isolation zone can be formed between the fireproof layer and the inner sheath to prevent the fire from damaging the core layer, the fireproof performance of the fireproof device is further improved, and the fireproof protection effect of the fireproof device on the core layer is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

fig. 3 is a schematic structural view of the reinforcing member of the present invention.

In the figure: 1. an outer sheath; 2. a fixing ring; 3. copper strips; 4. a reinforcement; 5. a protective layer; 6. an inner sheath; 7. a filling layer; 8. a hoop; 9. a core layer; 10. a steel belt; 11. weaving layer; 12. a fire barrier layer; 13. an isolation layer; 14. protecting the belt; 15. an insulating shield layer; 16. an insulating layer; 17. a conductor shield layer; 18. a copper core conductor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3, the present invention provides the technical solutions: the utility model provides a fire-resistant power cable is dragged to tensile, includes oversheath 1, solid fixed ring 2, copper strips 3, reinforcement 4, protective layer 5, inner sheath 6, filling layer 7, hoop 8 and sandwich layer 9, oversheath 1, solid fixed ring 2, copper strips 3, protective layer 5, inner sheath 6, filling layer 7, hoop 8 and sandwich layer 9 set gradually and closely link to each other by outer to interior, reinforcement 4 one end and oversheath 1 fixed connection, reinforcement 4 other end and hoop 8 outer wall fixed connection, the cavity has been seted up to oversheath 1 intermediate position, the inside steel band 10 that is equipped with of inlaying of cavity, protective layer 5 comprises 11, flame retardant coating 12, isolation layer 13, just 11, flame retardant coating 12, isolation layer 13 set gradually by outer to interior between copper strips 3 and inner sheath 6, and closely link to each other, sandwich layer 9 is by boundary belt 14, insulating shield 15, Insulating layer 16, conductor shield 17 and copper core conductor 18 constitute, protective tape 14, insulating shield 15, insulating layer 16, conductor shield 17 and copper core are in hoop 8 is inboard sets gradually from outside to inside.

In this embodiment, specifically: solid fixed ring 2 is provided with a plurality ofly, and is a plurality of gu fixed ring 2 evenly sets up at 3 outer walls of copper strips, through the solid fixed ring 2 that sets up, can strengthen the wholeness of device, and then can hoisting device's tensile drag intensity to make the device have stronger stability.

In this embodiment, specifically: the cross-section "worker" font structure of

reinforcement

4, 4 one end of reinforcement and 1 intermediate position steel band 10 outer wall fixed connection of oversheath make the fixed of reinforcement 4 and steel band 10 and hoop 8 more firm through the "worker" font structure that sets up, and then the bulk strength of hoisting device that can be further to the tensile of device is dragged intensity has further been increased.

In this embodiment, specifically: the reinforcing member 4 is provided in plurality, and the plurality of reinforcing members 4 are uniformly arranged between the outer sheath 1 and the hoop 8.

In this embodiment, specifically: hoop 8 is provided with a plurality ofly, and is a plurality of hoop 8 evenly sets up along 9 axis directions of sandwich layer at 9 outer walls of sandwich layer, through the hoop 8 that sets up, and then makes the wholeness of sandwich layer 9 better, and cooperates the connection of reinforcement 4, has also promoted the wholeness effect of device to further promoted the tensile of device and dragged intensity.

In this embodiment, specifically: the flame retardant coating 12 adopts glass fiber and ceramic fiber to twist with each other and form, just flame retardant coating 12 is unanimous with isolation layer 13's thickness, twists with each other through adopting glass fiber and ceramic fiber and the flame retardant coating 12 that forms can the hoisting device's fire resistance, and then makes the fire prevention effect of device better.

In this embodiment, specifically: the isolation layer 13 adopts magnesium hydrate granule as the filler evenly to fill between flame retardant coating 12 and inner sheath 6, evenly fills between flame retardant coating 12 and inner sheath 6 through adopting the magnesium hydrate granule as the filler, and then can form an median between flame retardant coating 12 and inner sheath 6 and prevent the destruction of intensity of a fire to sandwich layer 9, and then has further promoted the fire-resistant fire behavior of device.

The working principle is that when the device is used, the overall strength of the outer sheath 1 is enhanced through the steel belt 10 on the inner side of the outer sheath 1, the fixing ring 2 is additionally arranged between the inner wall of the outer sheath 1 and the copper strip 3, the overall strength of the device is further improved, the integrity of the device is increased, the tensile strength of the device can be improved, the device has stronger stability, the hoop 8 is additionally arranged on the outer wall of the core layer 9, the integrity of the core layer 9 is better, the integral effect of the device is also improved by matching with the connection of the reinforcing piece 4, the tensile strength of the device is further improved, meanwhile, the steel belt 10 and the hoop 8 are fixedly connected through the I-shaped structural reinforcing piece 4, the overall strength of the device is further improved, the tensile strength of the device is further improved, and the use stability of the device is better, further flame retardant coating 12 through the setting can the hoisting device's fire resistance, and then makes the fireproof effect of device better, evenly fills between flame retardant coating 12 and inner sheath 6 through adopting the magnesium hydrate granule as the stopping simultaneously, makes it can form a median between flame retardant coating 12 and inner sheath 6 and prevents the destruction of intensity of a fire to sandwich layer 9, and then has further promoted the fire resistance and fire resistance of device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-resistant power cable is dragged to tensile which characterized in that: including oversheath (1), solid fixed ring (2), copper strips (3), reinforcement (4), protective layer (5), inner sheath (6), filling layer (7), hoop (8) and sandwich layer (9), oversheath (1), solid fixed ring (2), copper strips (3), protective layer (5), inner sheath (6), filling layer (7), hoop (8) and sandwich layer (9) set gradually and closely link to each other by outer to interior, reinforcement (4) one end and oversheath (1) fixed connection, reinforcement (4) other end and hoop (8) outer wall fixed connection, the cavity has been seted up to oversheath (1) intermediate position, the inside steel band (10) that is equipped with of cavity, protective layer (5) comprise weaving layer (11), flame retardant coating (12), isolation layer (13), just weaving layer (11), flame retardant coating (12), Isolation layer (13) is by outer setting gradually in to between copper strips (3) and inner sheath (6), and closely links to each other, sandwich layer (9) comprises boundary belt (14), insulating shield (15), insulating layer (16), conductor shield (17) and copper core conductor (18), boundary belt (14), insulating shield (15), insulating layer (16), conductor shield (17) and copper core are in hoop (8) inboard is by outer setting gradually in to.

2. The pull-resistant fire-resistant power cable according to claim 1, wherein: the fixing rings (2) are arranged in a plurality of numbers, and the fixing rings (2) are uniformly arranged on the outer wall of the copper strip (3).

3. The pull-resistant fire-resistant power cable according to claim 1, wherein: the section of the reinforcing piece (4) is of an I-shaped structure, and one end of the reinforcing piece (4) is fixedly connected with the outer wall of the steel belt (10) in the middle of the outer sheath (1).

4. The pull-resistant fire-resistant power cable according to claim 1, wherein: the reinforcing piece (4) is provided with a plurality of reinforcing pieces (4), and the plurality of reinforcing pieces (4) are uniformly arranged between the outer sheath (1) and the hoop (8).

5. The pull-resistant fire-resistant power cable according to claim 1, wherein: the hoop (8) is provided with a plurality of hoops, and the hoops (8) are uniformly arranged on the outer wall of the core layer (9) along the axis direction of the core layer (9).

6. The pull-resistant fire-resistant power cable according to claim 1, wherein: the fireproof layer (12) is formed by mutually twisting glass fibers and ceramic fibers, and the fireproof layer (12) and the isolation layer (13) are consistent in thickness.

7. The pull-resistant fire-resistant power cable according to claim 1, wherein: the isolation layer (13) is uniformly filled between the fireproof layer (12) and the inner sheath (6) by adopting magnesium hydroxide particles as filling materials.