CN217719109U

CN217719109U - Flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable

Info

Publication number: CN217719109U
Application number: CN202123373239.8U
Authority: CN
Inventors: 贺达园; 杨德丰; 毛诚悦; 储程
Original assignee: Jiangsu Huayuan Cable Co ltd
Current assignee: Jiangsu Huayuan Cable Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-11-01
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a fire-retardant corrosion-resistant crosslinked polyethylene insulation power cable, concretely relates to cable technical field, including insulating cover and a plurality of cable core, insulating cover includes insulating rubber layer, the insulating rubber layer fixed outer flame retardant rubber layer that is equipped with of outer, fixed interior flame retardant rubber layer that is equipped with on the insulating rubber inner wall, the fixed heat-insulating rubber layer that is equipped with of insulating rubber inside. The utility model discloses an interior flame retardant rubber layer and the inside special compound in outer flame retardant rubber layer and the heat resistance and the fire resistance of itself reach fire-retardant purpose, and the burning on insulating rubber layer has been avoided from inside and outside two directions on interior flame retardant rubber layer and outer flame retardant rubber layer simultaneously, has completely cut off the combustion factor of these two directions, accomplishes effectively to carry on fire-retardantly, also need not to use the whole fire-retardant material preparation that all uses of insulating cover simultaneously, has reduced the manufacturing cost of insulating cover.

Description

Flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable

Technical Field

The utility model relates to the technical field of cables, the more specifically fire-retardant corrosion-resistant crosslinked polyethylene insulation power cable that says so.

Background

The cable is an electric energy or signal transmission device, which is composed of a plurality of wires, and the outer end of the cable is provided with an insulating protective sleeve, and the function of the cable is to transmit electric energy or information from one place to another place.

In modern society, there are cables in places where people are moving, the cables are ubiquitous and inexhaustible, and the application of electric power and electromagnetic waves cannot be avoided in all activities needing to be explored and developed in universe space, underground, ocean and the like and in the research and development activities of any scientific and technological development and innovation project, and the generation, transmission and application of the electric power and the electromagnetic waves need to adopt the cables as connecting and transmitting parts or winding materials of a host machine.

To avoid the phenomenon that the cable burns due to aging or other external factors during use, the outer protective sleeve of the cable usually contains flame retardant materials, but if the protective sleeve is made of the flame retardant materials, the cost is high, and if part of the protective sleeve is made of the flame retardant materials, other parts of the protective sleeve may burn, so that the flame retardant effect is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a fire-retardant corrosion-resistant crosslinked polyethylene insulation power cable to solve the problem that appears in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant corrosion-resistant crosslinked polyethylene insulation power cable, includes insulating cover and a plurality of cable core, the cable core is established inside insulating cover, insulating cover includes insulating rubber layer, the insulating rubber layer external fixation is equipped with outer flame retardant rubber layer, the fixed interior flame retardant rubber layer that is equipped with on the insulating rubber layer inner wall.

Furthermore, the insulating rubber layer is fixedly arranged inside the insulating rubber layer, a plurality of reinforcing rings are fixedly arranged inside the insulating rubber layer, the reinforcing rings are arranged on the outer side of the insulating rubber layer, and the reinforcing rings can reinforce the whole insulating sleeve.

Furthermore, two buffer springs are arranged between two adjacent reinforcing rings, the reinforcing rings are connected end to end through the buffer springs, the buffer springs are fixedly arranged inside the insulating rubber layer, the tension is buffered through the elasticity of the buffer springs, and the cables are prevented from being damaged.

Further, a protective layer is fixedly arranged at the outer end of the outer flame-retardant rubber layer and used for protecting the whole cable.

Furthermore, the protective layer comprises an anti-freezing coating, the anti-freezing coating is sprayed at the outer end of the outer flame-retardant rubber layer, an anti-corrosion coating is sprayed at the outer end of the anti-freezing coating, the anti-freezing coating avoids the influence of the external low-temperature environment on the insulating sleeve, and the anti-corrosion coating plays a role in corrosion resistance.

Furthermore, the outer end of the anti-corrosion coating is sprayed with a wear-resistant coating, the outer end of the wear-resistant coating is sprayed with an antioxidant coating, and the outer end of the antioxidant coating is sprayed with a waterproof coating, so that the purpose of prolonging the service life of the cable in all aspects can be achieved.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with respectively on the inner wall on insulating rubber layer and the outside and flame retardant rubber layer and outer flame retardant rubber layer, utilize the special compound of flame retardant rubber layer and outer flame retardant rubber in inside and heat resistance and the fire resistance of itself to reach fire-retardant purpose, the burning on insulating rubber layer has been avoided to two directions from inside and outside on flame retardant rubber layer and outer flame retardant rubber layer simultaneously, the combustion factor of these two directions has been isolated, accomplish effectively to carry on fire-retardantly, also need not to use the whole fire-retardant material preparation of insulating cover simultaneously, the manufacturing cost of insulating cover has been reduced.

2. The utility model discloses a protective layer sets up the outside on outer fire-retardant rubber layer, a whole to this cable is protected, contain anticorrosive coating in the protective layer, anticorrosive coating can prevent that the material in the external environment from causing the corruption to the cable, its principle mainly lies in anticorrosive coating can completely cut off outside acidity and alkaline material, avoid the outer surface contact of all the other cables, furthermore, still contain some amphoteric compound among the anticorrosive coating, can take place chemical reaction when the contact of the acidity or alkaline material that lie in the external environment, in and its acidity or basicity, thereby reach anticorrosive purpose.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a three-dimensional semi-sectional view of the present invention.

Fig. 3 is a three-dimensional semi-sectional view of the insulating sleeve of the present invention.

Fig. 4 is a perspective view of the reinforcing ring and the spring of the present invention.

Fig. 5 is a three-dimensional half-sectional view of the protective layer of the present invention.

The reference signs are: 1. a cable core; 2. an insulating sleeve; 3. a protective layer; 4. a reinforcing ring; 5. an insulating rubber layer; 6. a heat insulating rubber layer; 7. an inner flame-retardant rubber layer; 8. an outer flame retardant rubber layer; 9. a buffer spring; 10. waterproof paint; 11. an antioxidant coating; 12. wear-resistant paint; 13. anticorrosive coatings; 14. and (3) antifreezing paint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 the attached drawings 1-4 of the specification, the flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable of the embodiment comprises an insulating sleeve 2 and a plurality of cable cores 1, wherein the cable cores 1 are arranged inside the insulating sleeve 2, the cable cores 1 play a main role in power transmission, the insulating sleeve 2 is used for protecting the cable cores 1, the insulating sleeve 2 comprises an insulating rubber layer 5, an outer flame-retardant rubber layer 8 is fixedly arranged at the outer end of the insulating rubber layer 5, an inner flame-retardant rubber layer 7 is fixedly arranged on the inner wall of the insulating rubber layer 5, the inner flame-retardant rubber layer 7 and the outer flame-retardant rubber layer 8 avoid combustion of the insulating rubber layer 5 from the inner direction and the outer direction, so that combustion factors in the two directions are isolated, a heat-insulating rubber layer 6 is fixedly arranged inside the insulating rubber layer 5, the heat-insulating rubber layer 6 can isolate heat transmission, so that external temperature change is prevented from affecting the cable cores 1, a plurality of reinforcing rings 4 are fixedly arranged inside the insulating rubber layer 5, the reinforcing rings 4 are arranged outside the insulating rubber layer 6, the reinforcing rings 4 can integrally reinforce the insulating sleeve 2, two adjacent buffer springs 9 are arranged between the two adjacent rings 4, the reinforcing rings are connected through the buffer springs 9, and the buffer springs are connected with the buffer springs, and the buffer springs to prevent the buffer springs from being damaged by elasticity of the buffer springs.

The implementation scenario is specifically as follows: the power cable mainly comprises an insulating sleeve 2 and a plurality of cable cores 1 in the insulating sleeve 2, wherein the cable cores 1 play a main role in transmitting power, the insulating sleeve 2 is used for protecting the cable cores 1, the insulating sleeve 2 mainly comprises an insulating rubber layer 5, because the electron of the conductive substance is active and the electron of the insulating rubber layer 5 is inactive, the insulating rubber layer 5 can play an insulating role, the insulating rubber layer 5 is internally provided with the heat insulating rubber layer 6, the heat insulating rubber layer 6 can isolate the propagation of heat and avoid the influence of the external temperature change on the cable core 1, the insulating rubber layer 5 is internally provided with the reinforcing ring 4, the reinforcing ring 4 can integrally reinforce the insulating sleeve 2, in addition, the reinforcing rings 4 are connected through the buffer spring 9, when the cable is pulled by external force, the tensile force can be buffered through the elasticity of the buffer spring 9, the cable is prevented from being damaged, the inner wall and the outer side of the insulating rubber layer 5 are respectively provided with the inner flame-retardant rubber layer 7 and the outer flame-retardant rubber layer 8, the inner flame-retardant rubber layer 7 and the outer flame-retardant rubber layer 8 have good heat resistance and flame retardance, and are internally added with some special compounds, once combustion occurs, these compounds release some non-combustible gases, thereby blocking the heat source and oxygen, thereby limiting further diffusion of combustion, the inner flame-retardant rubber layer 7 and the outer flame-retardant rubber layer 8 are respectively fixed on the inner wall and the outer end of the insulating rubber layer 5, so that the combustion of the insulating rubber layer 5 is avoided from the inner direction and the outer direction, the combustion factors in the two directions are isolated, the flame retardance is effectively realized, meanwhile, the whole insulating sleeve 2 does not need to be made of flame-retardant materials, and the production cost of the insulating sleeve 2 is reduced.

Referring to the attached drawings 1-5 in the specification, in the flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable of the embodiment, the outer end of the outer flame-retardant rubber layer 8 is fixedly provided with the protective layer 3 for protecting the whole cable, the protective layer 3 comprises the anti-freezing coating 14, the anti-freezing coating 14 is sprayed at the outer end of the outer flame-retardant rubber layer 8, the outer end of the anti-freezing coating 14 is sprayed with the anti-corrosion coating 13, the anti-freezing coating 14 prevents the external low-temperature environment from influencing the insulating sleeve 2, the anti-corrosion coating 13 plays a role in corrosion prevention, the outer end of the anti-corrosion coating 13 is sprayed with the wear-resistant coating 12, the outer end of the wear-resistant coating 12 is sprayed with the anti-oxidation coating 11, the outer end of the anti-oxidation coating 11 is sprayed with the waterproof coating 10, and the three can achieve the purpose of prolonging the service life of the cable in various aspects.

The implementation scene is specifically as follows: the protective layer 3 is arranged on the outer side of the outer flame-retardant rubber layer 8 and used for protecting the whole cable, the protective layer 3 comprises waterproof paint 10, antioxidant paint 11, wear-resistant paint 12, anticorrosive paint 13 and antifreezing paint 14, wherein the waterproof paint 10 and the antioxidant paint 11 act together to isolate oxygen and moisture, and prevent the insulating sleeve 2 on the outer side of the cable from being oxidized due to contact with the cable, so that the service life of the whole cable is prolonged, the wear-resistant paint 12 increases the strength of the outer end of the insulating sleeve 2 and reduces the friction coefficient of the outer end of the insulating sleeve 2, so that the wear of the outer end of the insulating sleeve 2 is reduced, the service life of the insulating sleeve 2 is prolonged, the anticorrosive paint 13 can prevent substances in the external environment from corroding the cable, the principle is that the anticorrosive paint 13 can isolate external acidic and alkaline substances, contact of the outer surfaces of other cables is avoided, in addition, the anticorrosive paint 13 also contains some amphoteric compounds, when the acidic or alkaline substances in the external environment contact, a chemical reaction can occur, and the acidic or alkaline substances in the cable are neutralized, so that the aim of corrosion prevention is achieved, the heat transfer is relatively large, and the influence of the external insulating sleeve 2 on the low-temperature is avoided.

And finally: the foregoing is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the invention, and any modifications, equivalent alterations, improvements and the like made within the spirit and principle of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a fire-retardant corrosion-resistant crosslinked polyethylene insulation power cable, includes insulating cover (2) and a plurality of cable core (1), inside insulating cover (2), its characterized in that were established in cable core (1): the insulating sleeve (2) comprises an insulating rubber layer (5), an outer flame-retardant rubber layer (8) is fixedly arranged at the outer end of the insulating rubber layer (5), and an inner flame-retardant rubber layer (7) is fixedly arranged on the inner wall of the insulating rubber layer (5).

2. The flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the heat insulation rubber layer (6) is fixedly arranged inside the insulation rubber layer (5), the reinforcing rings (4) are fixedly arranged inside the insulation rubber layer (5), and the reinforcing rings (4) are arranged on the outer side of the insulation rubber layer (6).

3. The flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: two buffer springs (9) are arranged between every two adjacent reinforcing rings (4), the reinforcing rings (4) are connected end to end through the buffer springs (9), and the buffer springs (9) are fixedly arranged inside the insulating rubber layer (5).

4. The flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: and a protective layer (3) is fixedly arranged at the outer end of the outer flame-retardant rubber layer (8).

5. The flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable according to claim 4, characterized in that: the protective layer (3) comprises an anti-freezing coating (14), the anti-freezing coating (14) is sprayed at the outer end of the outer flame-retardant rubber layer (8), and an anti-corrosion coating (13) is sprayed at the outer end of the anti-freezing coating (14).

6. The flame-retardant corrosion-resistant cross-linked polyethylene insulated power cable according to claim 5, characterized in that: the outer end of the anti-corrosion coating (13) is sprayed with a wear-resistant coating (12), the outer end of the wear-resistant coating (12) is sprayed with an antioxidant coating (11), and the outer end of the antioxidant coating (11) is sprayed with a waterproof coating (10).