CN217767904U

CN217767904U - Stretch-proofing resistance to compression power cable

Info

Publication number: CN217767904U
Application number: CN202221642172.5U
Authority: CN
Inventors: 冷念波; 吴小松; 鞠程伟
Original assignee: Chongqing Rapt Electricity Industrial Co ltd
Current assignee: Chongqing Rapt Electricity Industrial Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-08
Anticipated expiration: 2032-06-29

Abstract

The utility model belongs to the technical field of power cable, and a stretch-proofing resistance to compression power cable is disclosed, include: an outer sheath; the inner sheath is arranged in the outer sheath, a plurality of insulating sleeves are arranged in the inner sheath, and a plurality of conductors are connected inside the insulating sleeves; the second traction rope is arranged in the middle of the inner sheath, and a support sheet is fixed between two adjacent conductors on the side wall of the second traction rope; set up the first haulage rope in the middle of the inner sheath is inside, the utility model discloses a cooperation of inner braid, second haulage rope and backing sheet can strengthen the pull resistance of conductor in the insulating sheath to form the inner frame and support the protection to the conductor, and through the cooperation of outer braid, first haulage rope and support frame, can strengthen the pull resistance of insulating sheath in the inner sheath, and form the outer frame and support the protection to the insulating sheath, thereby the effectual cable that has restrained takes place tensile and deformation, has improved the tensile compressive property of cable greatly.

Description

Stretch-proofing resistance to compression power cable

Technical Field

The utility model belongs to the technical field of power cable, concretely relates to stretch-proofing resistance to compression power cable.

Background

The cable is usually made of a plurality of mutually insulated conductors and an outer insulating protective layer, and is a conducting wire for transmitting power or information from one place to another place, while the existing power cable is a cable for transmitting and distributing electric energy and is commonly used for urban underground power grids and transmission lines under river-crossing seawater.

However, the power cable in the market has more defects in practical application, for example, when the cable is laid underground or under the water of a river and sea, the cable can be under the action of larger pressure, and the self pressure resistance and tensile resistance of the cable are poorer, so that the conductor is easy to deform and damage, the interior of the cable is easy to damp, the cold resistance of the cable is poor, and the service life of the power cable is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stretch-proofing resistance to compression power cable to the resistance to compression tensile ability of solving the power cable who provides in the above-mentioned background art is relatively poor, and inside easily wets, the not good problem of winter protection performance.

In order to achieve the above purpose, the utility model provides a following technical scheme: a stretch resistant, crush resistant power cable comprising: an outer sheath; the inner sheath is arranged in the outer sheath, a plurality of insulating sleeves are arranged in the inner sheath, and a plurality of conductors are connected inside the insulating sleeves; the second traction rope is arranged in the middle of the inner sheath, and a support sheet is fixed between two adjacent conductors on the side wall of the second traction rope; the first traction rope is arranged in the middle of the inner sheath, and a support frame is fixed between every two adjacent insulating sheaths on the side wall of the first traction rope; the inner wall of inner sheath is provided with outer weaving layer, the inner wall of insulating sheath is fixed with inner weaving layer.

Preferably, the power cable further comprises: the composite layer is arranged between the outer sheath and the inner sheath and comprises a heat-insulating layer and sealing layers symmetrically connected to two sides of the heat-insulating layer; and a toughening layer is fixed between the sealing layer and the heat-insulating layer.

Preferably, the wear-resistant protective sleeve further comprises a wear-resistant layer arranged outside the outer sheath, and wear-resistant particles are arranged on the outer wall of the wear-resistant layer.

Preferably, the insulation layer further comprises through holes arranged in the insulation layer, and the intervals of the two adjacent through holes are equal. Preferably, the flame retardant layer is arranged on the outer wall of the conductor, the conductor and the support sheet are distributed at intervals, the support frame is of a hollow structure, and the support frame and the insulating sleeve are distributed at intervals.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, the matching of the inner weaving layer, the second traction rope and the support sheet can strengthen the tensile resistance of the conductor in the insulating sleeve, and form the inner framework to support and protect the conductor, and the matching of the outer weaving layer, the first traction rope and the support frame can strengthen the tensile resistance of the insulating sleeve in the inner weaving layer, and form the outer framework to support and protect the insulating sleeve, thereby effectively inhibiting the cable from stretching and deforming, and greatly improving the tensile and compressive performance of the cable;

in addition, can form the heat preservation space between outer sheath and inner sheath through the heat preservation to strengthen the heat preservation and defending cold performance of cable greatly, can strengthen the sealed water-proof effects of cable through the sealing layer, thereby effectually prevented the steam infiltration, avoided the inside damping of cable, and can further strengthen the pliability of cable through toughening layer, and then prolonged the life of cable greatly.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the composite layer of the present invention;

in the figure: 1. an outer sheath; 2. a wear layer; 3. compounding layers; 31. a heat-insulating layer; 32. a sealing layer; 33. a toughening layer; 4. an inner sheath; 5. an insulating sleeve; 6. a conductor; 7. a first pull cord; 8. a support frame; 9. an outer braid layer; 10. a second pull cord; 11. a support sheet; 12. and an inner woven layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a stretch resistant and crush resistant power cable includes: an outer sheath 1; the inner sheath 4 is arranged in the outer sheath 1, a plurality of insulating sleeves 5 are arranged in the inner sheath 4, and a plurality of conductors 6 are connected inside the insulating sleeves 5; the second traction rope 10 is arranged in the middle of the inner sheath 4, and a support sheet 11 is fixed between two adjacent conductors 6 on the side wall of the second traction rope 10; the first traction rope 7 is arranged in the middle of the inner sheath 4, and a support frame 8 is fixed between every two adjacent insulating sleeves 5 on the side wall of the first traction rope 7; the inner wall of the inner sheath 4 is provided with an outer braid 9, and the inner wall of the insulating sheath 5 is fixed with an inner braid 12.

Through the technical scheme:

specifically, the tensile resistance of the plurality of conductors 6 in the insulating sleeve 5 can be enhanced through the second traction rope 10, an inner framework can be formed to support and protect the conductors 6 under the matching of the supporting sheet 11, the tensile resistance of the plurality of insulating sleeves 5 in the inner sheath 4 can be enhanced through the first traction rope 7, and an outer framework can be formed to support and protect the insulating sleeves 5 under the matching of the supporting frame 8;

meanwhile, the outer weaving layer 9 and the inner weaving layer 12 are made of nylon and rubber filler, so that the stretching and deformation of the cable can be effectively inhibited, the cable can be prevented from being broken and damaged under the action of the double structure, and the tensile and compression resistance of the cable is greatly improved.

Further, with respect to the outer sheath 1 provided as described above, a wear-resistant layer 2 may be additionally provided on the outer side thereof, and the outer wall of the wear-resistant layer 2 is provided with wear-resistant particles, whereby the wear of the cable may be reduced by the wear-resistant layer 2.

Furthermore, the outer wall of the conductor 6 can be supplemented with a flame retardant layer, and the flame retardant layer has the function of protecting and retarding flame.

Further, the support frame 8 is provided as a hollow structure, and therefore, the weight of the support frame 8 can be reduced by the hollow design.

Referring to fig. 3, in the present invention, there is provided a further embodiment, the stretch-resistant and compression-resistant power cable further comprising: the composite layer 3 is arranged between the outer sheath 1 and the inner sheath 4, and the composite layer 3 comprises a heat-insulating layer 31 and sealing layers 32 symmetrically connected to two sides of the heat-insulating layer 31; a toughening layer 33 is fixed between the sealing layer 32 and the insulating layer 31.

Through the technical scheme:

specifically, the heat-insulating layer 31 is made of asbestos fiber materials, a heat-insulating space can be formed between the outer sheath 1 and the inner sheath 4 through the heat-insulating layer 31, so that the heat-insulating and cold-resisting performance of the cable is greatly enhanced, and the sealing layer 32 is made of polytetrafluoroethylene materials and has a good sealing and waterproof effect, so that water vapor is effectively prevented from permeating, and the interior of the cable is prevented from being damped;

in addition, the toughening layer 33 is made of glass fiber materials, and the flexibility of the cable can be further enhanced through the toughening layer 33, so that the service life of the cable is greatly prolonged.

Furthermore, the heat-insulating layer 31 can be provided with through holes in a complementary manner, and the interval between two adjacent through holes is equal, so that the heat-insulating effect can be improved through the through holes.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A stretch resistant, crush resistant power cable, comprising:

an outer sheath (1);

the cable comprises an inner sheath (4) arranged in an outer sheath (1), wherein a plurality of insulating sleeves (5) are arranged in the inner sheath (4), and a plurality of conductors (6) are connected inside the insulating sleeves (5);

the second traction rope (10) is arranged in the middle of the inner sheath (4), and a support sheet (11) is fixed between two adjacent conductors (6) on the side wall of the second traction rope (10);

the first traction rope (7) is arranged in the middle of the inner sheath (4), and a support frame (8) is fixed between every two adjacent insulating sleeves (5) on the side wall of the first traction rope (7);

the inner wall of the inner sheath (4) is provided with an outer woven layer (9), and the inner wall of the insulating sheath (5) is fixed with an inner woven layer (12).

2. The stretch resistant, crush resistant power cable of claim 1, wherein the power cable further comprises:

the composite layer (3) is arranged between the outer sheath (1) and the inner sheath (4), and the composite layer (3) comprises a heat-insulating layer (31) and sealing layers (32) which are symmetrically connected to two sides of the heat-insulating layer (31);

a toughening layer (33) is fixed between the sealing layer (32) and the heat-insulating layer (31).

3. The stretch-resistant and crush-resistant power cable according to claim 2, wherein: the wear-resistant protective sheath is characterized by further comprising a wear-resistant layer (2) arranged on the outer side of the outer sheath (1), and wear-resistant particles are arranged on the outer wall of the wear-resistant layer (2).

4. A stretch resistant, crush resistant power cable according to claim 3 wherein: the heat-insulating layer is characterized by further comprising through holes formed in the heat-insulating layer (31), and the interval between every two adjacent through holes is equal.

5. The stretch-resistant and crush-resistant power cable according to claim 4, wherein: the flame-retardant cable is characterized by further comprising a flame-retardant layer arranged on the outer wall of the conductor (6), and the conductor (6) and the support sheet (11) are distributed at intervals.

6. The stretch-resistant and crush-resistant power cable according to claim 5, wherein: the support frame (8) is of a hollow structure, and the support frame (8) and the insulating sleeve (5) are distributed alternately.