CN213752061U

CN213752061U - Insulating polyvinyl chloride sheath power cable with good wear resistance

Info

Publication number: CN213752061U
Application number: CN202023138376.9U
Authority: CN
Inventors: 徐惠平; 夏涛; 徐广宇
Original assignee: Jiangsu Yujiu Cable Technology Co ltd
Current assignee: Jiangsu Yujiu Cable Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-07-20
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an insulating polyvinyl chloride sheath power cable that wearability is good relates to power cable technical field, and is general for solving the outer wearability of current polyvinyl chloride sheath power cable, and easy wearing and tearing fracture influences the problem of result of use. Be provided with polytetrafluoroethylene glass fiber around the band on the outer wall of polyvinyl chloride oversheath, and polytetrafluoroethylene glass fiber winds band and polyvinyl chloride oversheath fixed connection, be provided with the steel band armor on the inner wall of polyvinyl chloride oversheath, the inside of steel band armor is provided with at a distance from the oxygen layer, be provided with the band that blocks water on the inner wall that separates the oxygen layer the inside of the band that blocks water is provided with the filling layer, the inside of filling layer is provided with the copper core conductor, and the copper core conductor is provided with four.

Description

Insulating polyvinyl chloride sheath power cable with good wear resistance

Technical Field

The utility model relates to a power cable technical field specifically is an insulating polyvinyl chloride sheath power cable that wearability is good.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. Since the first cable invented by edison of the inventor in the united states in 1879, there has been a history of more than one hundred years. With the wider and wider application of electric energy, the industry has also gained a high-speed development. Along with the high-speed development of industry, high-power single-machine equipment is more and more, in China, single-machine equipment with rated voltage of 0.38KV and power of 500KW or even higher is more and more common, the specification of cables is more and more large, most of cables are directly buried and laid in consideration of construction difficulty and construction environment, and sometimes, no cable bridge or cable trench special for cable laying exists, so that a certain amount of requirements are met for single-core steel-tape armored cables.

However, the outer layer of the existing power cable with the polyvinyl chloride sheath has general wear resistance, is easy to wear and crack, and influences the use effect; therefore, the existing requirements are not met, and an insulated polyvinyl chloride sheathed power cable with good wear resistance is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating polyvinyl chloride sheath power cable that wearability is good to solve the outer wearability of current polyvinyl chloride sheath power cable that proposes in the above-mentioned background art general, easy wearing and tearing fracture influences the problem of result of use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an insulating polyvinyl chloride sheath power cable that wearability is good, includes the polyvinyl chloride oversheath, be provided with polytetrafluoroethylene glass fiber around the band on the outer wall of polyvinyl chloride oversheath, and polytetrafluoroethylene glass fiber around band and polyvinyl chloride oversheath fixed connection, be provided with the steel band armor on the inner wall of polyvinyl chloride oversheath, the inside of steel band armor is provided with at a distance from the oxygen layer, be provided with the band that blocks water on the inner wall that separates the oxygen layer, the inside that blocks water the band is provided with the filling layer, the inside of filling layer is provided with the copper core conductor, and the copper core conductor is provided with four.

Preferably, the outer walls of the four copper core conductors are provided with insulating layers, and the insulating layers are fixedly connected with the copper core conductors.

Preferably, be provided with the sand grip on the outer wall on the oxygen layer that separates, the sand grip is provided with eight, and with separate oxygen layer structure as an organic whole.

Preferably, a hollow compartment is arranged between the oxygen isolation layer and the steel tape armor, and eight hollow compartments are arranged.

Preferably, the inside of filling layer is provided with the adhesive tape, and the adhesive tape is provided with a plurality of.

Preferably, the water-blocking tape is arranged between the oxygen-insulating layer and the filling layer.

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

1. the utility model discloses a set up one deck polytetrafluoroethylene glass fiber around the band on the outer wall of polyvinyl chloride oversheath, it has non-adhesiveness and self-lubricating characteristic, and coefficient of friction is low, sets up to have better wear-resisting effect in the cable is outmost, has solved current polyvinyl chloride sheath power cable outer wearability generally, and easy wearing and tearing fracture influences the problem of result of use.

2. Through separating the oxygen layer at power cable inside setting, separate the oxygen layer for not having a stopping that steamed fire-retardant polyolefin made, can completely cut off oxygen to reach the effect that reduces the ignition point, evenly be provided with eight sand grips around the outer wall that separates the oxygen layer, make it and steel band armor have the cavity compartment after the package, thereby utilize the cavity effect to reduce heat conduction, play certain fire effects that separate.

Drawings

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

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic view of the partial structure of the oxygen barrier layer of the present invention.

In the figure: 1. a polytetrafluoroethylene glass fiber wrapping tape; 2. a polyvinyl chloride outer sheath; 3. steel tape armoring; 4. an oxygen barrier layer; 5. a convex strip; 6. a hollow compartment; 7. a water-blocking wrapping tape; 8. a filling layer; 9. a copper-core conductor; 10. an insulating 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.

Referring to fig. 1-3, the present invention provides an embodiment: an insulating polyvinyl chloride sheath power cable with good wear resistance comprises a polyvinyl chloride outer sheath 2, a polytetrafluoroethylene glass fiber wrapping tape 1 is arranged on the outer wall of the polyvinyl chloride outer sheath 2, the polytetrafluoroethylene glass fiber wrapping tape 1 is fixedly connected with the polyvinyl chloride outer sheath 2, the polytetrafluoroethylene glass fiber wrapping tape 1 has non-adhesiveness and self-lubricating characteristics, the friction coefficient is low, a steel strip armor 3 is arranged on the inner wall of the polyvinyl chloride outer sheath 2, the steel strip armor 3 can improve the overall strength of the cable, an oxygen insulating layer 4 is arranged inside the steel strip armor 3, the oxygen insulating layer 4 can insulate oxygen to achieve the effect of reducing the ignition point, a water-blocking tape 7 is arranged on the inner wall of the oxygen insulating layer 4, the water-blocking tape 7 can prevent water from entering the inside of the cable and damaging the cable, and a filling layer 8 is arranged inside the water-blocking tape 7, the filling layer 8 can compress tightly fixed copper core conductor 9, and the inside of filling layer 8 is provided with copper core conductor 9, and copper core conductor 9 is provided with four.

Furthermore, the outer walls of the four copper core conductors 9 are provided with insulating layers 10, the insulating layers 10 are fixedly connected with the copper core conductors 9, the insulating layers 10 are the same as the outer sheaths and are made of polyvinyl chloride materials, and the insulating and flame-retardant copper core cable has good insulating and flame-retardant properties.

Furthermore, be provided with sand grip 5 on the outer wall of oxygen barrier layer 4, sand grip 5 is provided with eight, and with oxygen barrier layer 4 structure as an organic whole, oxygen barrier layer 4 is halogen-free fire-retardant polyolefin filler, can completely cut off oxygen to reach the effect that reduces the ignition point.

Further, it is provided with cavity compartment 6 to separate between oxygen layer 4 and the steel band armor 3, and cavity compartment 6 is provided with eight, separates oxygen layer 4 and passes through the sand grip 5 structure of outer wall, makes it and steel band armor 3 around the package after, has cavity compartment 6 to utilize the cavity effect to reduce heat conduction, play certain effect of separating a fire.

Further, the inside of filling layer 8 is provided with the adhesive tape, and the adhesive tape is provided with a plurality of, and a plurality of adhesive tape fills in filling layer 8 for copper core conductor 9 can be firm fixed, in order to promote the stability of transmitting electricity.

Further, the water-blocking tape 7 is arranged between the oxygen-isolating layer 4 and the filling layer 8, and the water-blocking tape 7 is a waterproof non-woven fabric, so that the power cable has a certain waterproof effect, and the water is prevented from being immersed into the cable to damage the cable.

The working principle is as follows: when in use, the outer sheath and the insulating layer 10 of the cable are both made of polyvinyl chloride materials and have better insulating and flame-retardant effects, a layer of polytetrafluoroethylene glass fiber wrapping tape 1 is arranged on the outer wall of the polyvinyl chloride outer sheath 2, has non-adhesive property and self-lubricating property, has low friction coefficient, has better wear-resistant effect and is arranged on the outermost layer of the cable, a layer of steel tape armor 3 is arranged on the inner wall of the polyvinyl chloride outer sheath 2, can effectively improve the overall strength and tensile resistance of the power cable, an oxygen insulating layer 4 is arranged inside the steel tape armor 3 and is a filler made of halogen-free flame-retardant polyolefin, can insulate oxygen to achieve the effect of reducing the ignition point, eight convex strips 5 are uniformly arranged around the outer wall of the oxygen insulating layer 4, and a hollow compartment 6 is formed after the oxygen insulating layer and the steel tape armor 3 are wrapped, so that the heat conduction is reduced by utilizing the hollow effect, the inner wall of the oxygen isolation layer 4 is provided with the water-blocking tape 7 which wraps the outside of the filling layer 8 of the copper core conductor 9, so that the power cable has a certain waterproof effect to prevent water from immersing into the cable, and the cable is prevented from being damaged.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a good insulating polyvinyl chloride sheath power cable of wearability, includes polyvinyl chloride oversheath (2), its characterized in that: be provided with polytetrafluoroethylene glass fiber around band (1) on the outer wall of polyvinyl chloride oversheath (2), and polytetrafluoroethylene glass fiber is around band (1) and polyvinyl chloride oversheath (2) fixed connection, be provided with steel band armor (3) on the inner wall of polyvinyl chloride oversheath (2), the inside of steel band armor (3) is provided with at a distance from oxygen layer (4), be provided with band (7) that blocks water on the inner wall that separates oxygen layer (4), the inside of band (7) that blocks water is provided with filling layer (8), the inside of filling layer (8) is provided with copper core conductor (9), and copper core conductor (9) are provided with four.

2. The insulated polyvinyl chloride sheathed power cable with good wear resistance as claimed in claim 1, wherein: and the outer walls of the four copper core conductors (9) are provided with insulating layers (10), and the insulating layers (10) are fixedly connected with the copper core conductors (9).

3. The insulated polyvinyl chloride sheathed power cable with good wear resistance as claimed in claim 1, wherein: be provided with sand grip (5) on the outer wall that separates oxygen layer (4), sand grip (5) are provided with eight, and with separating oxygen layer (4) structure as an organic whole.

4. The insulated polyvinyl chloride sheathed power cable with good wear resistance as claimed in claim 1, wherein: and eight hollow compartments (6) are arranged between the oxygen isolation layer (4) and the steel tape armor (3), and the number of the hollow compartments (6) is eight.

5. The insulated polyvinyl chloride sheathed power cable with good wear resistance as claimed in claim 1, wherein: the inside of filling layer (8) is provided with the adhesive tape, and the adhesive tape is provided with a plurality of.

6. The insulated polyvinyl chloride sheathed power cable with good wear resistance as claimed in claim 1, wherein: the water-blocking wrapping tape (7) is arranged between the oxygen-isolating layer (4) and the filling layer (8).