CN210640039U

CN210640039U - Improved multi-layer PVC insulated power cable

Info

Publication number: CN210640039U
Application number: CN201922287315.XU
Authority: CN
Inventors: 王连强
Original assignee: Shandong Zhentai Cable Co ltd
Current assignee: Shandong Zhentai Cable Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-05-29
Anticipated expiration: 2029-12-17

Abstract

The utility model provides an insulating power cable of improved generation multilayer PVC, including outer lag, be equipped with interior lag in the outer lag, interior surface mounting steel strip armor inoxidizing coating in the lag, evenly arrange three first insulation cover in the steel strip armor inoxidizing coating, install many copper cores in the first insulation cover, be filled with fire-retardant filling rope between first insulation cover and the steel strip armor inoxidizing coating, red lacquer is paintd to interior lag surface, it is three be equipped with the insulating cover of second between the first insulation cover, fixed tractive steel wire in the insulating cover of second, the outer fixed surface of second cover branch, the branch other end radiates to fire-retardant filling rope in along the insulating cover diameter direction of second, compares with prior art, the utility model discloses following beneficial effect has: the device has the function of indicating the degree of wear and realizes traction and anti-drop.

Description

Improved multi-layer PVC insulated power cable

Technical Field

The utility model discloses an insulating power cable of improved generation multilayer PVC belongs to cable technical field.

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. At present, the outmost lag of power cable is single-layer structure, and power cable is when the easy sliding friction of in-process such as erectting wearing and tearing, is difficult to judge the degree of wear of lag, is difficult for discovering the serious position of wearing and tearing, causes the hidden danger for later stage power supply safety, and power cable's both ends are in the wiring back of finishing simultaneously, because of lacking the tractive structure, and the copper core is in load state with the wiring position easily, and the probability that takes place to connect trouble such as coming off is great.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art existence, the utility model aims at providing an insulating power cable of improved generation multilayer PVC to propose the outmost lag of power cable in solving above-mentioned background art and be single layer construction, power cable is when setting up the easy sliding friction of in-process such as waiting and wearing and tearing, be difficult to judge the degree of wear of lag, be difficult for discovering the serious position of wearing and tearing, cause the hidden danger for later stage power supply safety, power cable's both ends are in the wiring back that finishes simultaneously, because of lacking the tractive structure, the copper core easily is in load condition with the wiring position, the great problem of fault probability such as emergence joint drops, the utility model discloses have degree of wear indicative function, realize tractive anti-drop.

In order to achieve the above purpose, the present invention is realized by the following technical solution: improved generation multilayer PVC insulation power cable, including outer lag, be equipped with interior lag in the outer lag, interior surface mounting steel band armor inoxidizing coating of lag, three first insulation cover evenly arranges in the steel band armor inoxidizing coating, install many copper cores in the first insulation cover, it has fire-retardant filling rope to fill between first insulation cover and the steel band armor inoxidizing coating, interior lag surface is paintd red paint, and is three be equipped with the second insulation cover between the first insulation cover, fixed tractive steel wire in the second insulation cover, second insulation cover external fixation branch, the branch other end radiates to in the fire-retardant filling rope along second insulation cover diameter direction.

Furthermore, a plurality of limiting grooves are formed in the inner surface of the outer protective sleeve at annular equal intervals, a plurality of limiting strips are fixed on the outer surface of the inner protective sleeve at annular equal intervals, the limiting strips and the inner protective sleeve are of an integrally formed structure, and the plurality of limiting strips are respectively inserted into the plurality of limiting grooves.

Further, a plurality of branch are installed, and are a plurality of branch evenly arranges at the insulating cover surface of second, branch is the component that a polyvinyl chloride made, branch and the insulating cover of second are the integrated into one piece structure.

Furthermore, a raised head is fixed at one end of the support rod, which is far away from the second insulating sleeve, and the raised head is arranged in the flame-retardant filling rope.

Further, the outer protective sleeve and the inner protective sleeve are both made of polyvinyl chloride, and aluminum hydroxide fire retardants are added into the outer protective sleeve and the inner protective sleeve.

Furthermore, a plurality of annular grooves are formed in the outer surface of the outer protective sleeve at equal intervals, a barrel ring is installed in the annular grooves in a sliding mode, a round hole is formed in the outer surface of the barrel ring, and a connecting rod is fixed in the round hole.

Furthermore, a plurality of through holes are uniformly formed in the outer surface of the steel tape armored protective layer.

The utility model has the advantages that: the utility model discloses a establish the interior protective sheath with outer lag cover and sheathe in, constitute bilayer protective structure, including lag coating surface scribbles red lacquer simultaneously, be convenient for when red lacquer exposes, in time judge that outer lag is in the serious state of wearing and tearing, realize the purpose of serious instruction of wearing and tearing, be convenient for in time handle the serious position of wearing and tearing, guarantee later stage power supply safety.

The utility model discloses an installation parcel has the tractive steel wire of the insulating cover of second in fire-retardant filling rope, after the wiring position such as copper core and copper bar is connected and is accomplished, the tip winding insulating tape that exposes the tractive steel wire is fixed in suitable position department, realize utilizing the purpose of tractive steel wire tractive, prevent that wiring position such as copper core and copper bar is in load state, reduce the probability that wiring position such as copper core and copper bar drops, through installing branch on the insulating cover of second, and take root branch in fire-retardant filling rope, play the effect of restriction tractive steel wire position, produce the displacement in fire-retardant filling rope when preventing the tractive steel wire in the tractive state.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of an improved multilayer PVC insulated power cable according to the present invention;

FIG. 2 is a cross-sectional view of an outer protective sleeve in the improved multi-layer PVC insulated power cable of the present invention;

fig. 3 is a perspective view of an external protective jacket in the improved multilayer PVC insulated power cable of the present invention;

in the figure: the method comprises the following steps of 1-outer protecting sleeve, 2-red paint, 3-inner protecting sleeve, 4-steel tape armor protecting layer, 5-flame-retardant filling rope, 6-first insulating sleeve, 7-copper core, 8-second insulating sleeve, 9-drawing steel wire, 10-supporting rod, 11-raised head, 12-limiting strip, 13-limiting groove, 14-barrel ring, 15-round hole and 16-connecting rod.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: improved generation multilayer PVC insulation power cable, including outer lag 1, be equipped with interior lag 3 in the

outer lag

1, 3 interior surface mounting steel band armor inoxidizing coating 4 of interior lag, evenly arrange three first insulation cover 6 in the steel band armor inoxidizing coating 4, install many copper cores 7 in the first insulation cover 6, be filled with fire-retardant filling rope 5 between first insulation cover 6 and the steel band armor inoxidizing

coating

4, 3 surface paintings of interior lag 2, through establishing interior lag 3 with 1 cover of outer lag, constitute bilayer protective structure, including 3 surface paintings of lag 2 simultaneously, be convenient for when red lacquer 2 exposes, in time judge that outer lag 1 is in the serious state of wearing and tearing, realize the purpose of serious instruction of wearing and tearing, be convenient for in time handle the serious position of wearing and tearing, guarantee later stage power supply safety.

A second insulating sleeve 8 is arranged among the three first insulating sleeves 6, a traction steel wire 9 is fixed in the second insulating sleeve 8, a support rod 10 is fixed on the outer surface of the second insulating sleeve 8, the other end of the support rod 10 radiates into the flame-retardant filling rope 5 along the diameter direction of the second insulating sleeve 8, the traction steel wire 9 wrapped with the second insulating sleeve 8 is installed in the flame-retardant filling rope 5, after the copper core 7 is connected with the wiring parts of the copper bar and the like, the exposed end part of the traction steel wire 9 is wound with an insulating tape and fixed at a proper position, so that the purpose of utilizing the traction steel wire 9 to realize traction is realized, the wiring parts of the copper core 7 and the copper bar and the like are prevented from being in a load state, the probability of falling off of the wiring parts of the copper core 7 and the copper bar and the like is reduced, the support rod 10 is arranged on the second insulating sleeve 8, and the support rod 10 is rooted in the flame-retardant filling rope 5, so that the function of limiting the position of the traction steel wire 9 is achieved, and the traction steel wire 9 is prevented from generating displacement in the flame-retardant filling rope 5 when in a traction state.

A plurality of spacing grooves 13 are seted up to outer lag 1 internal surface for annular equidistance, 3 external surfaces of interior lag are the fixed a plurality of spacing 12 of annular equidistance, spacing 12 and interior lag 3 are integrated into one piece structure, a plurality of spacing 12 are inserted respectively in a plurality of spacing grooves 13, the spacing 12 on the lag 3 of will interior lag is inserted in the spacing groove 13 of lag 1 in outer lag, prevent that outer lag 1 takes place relative slip with interior lag 3, improve the stability that outer lag 1 is connected with interior lag 3.

A plurality of branch 10 are installed, and a plurality of branch 10 evenly arrange at the 8 surfaces of second insulating cover, and branch 10 is the component that a polyvinyl chloride made, and branch 10 and second insulating cover 8 are the integrated into one piece structure, take root a plurality of branch 10 on the second insulating cover 8 evenly in fire-retardant filling rope 5, improve the effect of injecing the insulating cover 8 position of second, improve the stability of tractive steel wire 9 position promptly.

One end of the supporting rod 10, which is far away from the second insulating sleeve 8, is fixed with a raised head 11, the raised head 11 is arranged in the flame-retardant filling rope 5, the raised head 11 is arranged on the supporting rod 10, the contact area between the supporting rod 10 and the flame-retardant filling rope 5 is increased, and the rooting effect is improved.

Outer lag 1 and interior lag 3 are the component that a polyvinyl chloride was made, all add aluminium hydroxide fire retardant in outer lag 1 and the interior lag 3, further improve fire-retardant effect.

The equidistance of outer lag 1 surface is equipped with a plurality of ring channels, slidable mounting section of thick bamboo circle 14 in the ring channel, round hole 15 has been seted up to section of thick bamboo circle 14 surface, and round hole 15 internal fixation has connecting rod 16, installs section of thick bamboo circle 14 in the ring channel, is convenient for make section of thick bamboo circle 14 and outer lag 1 looks parallel and level, and at the in-process of setting up, the connecting rod 16 tie rope in round hole 15 to tie the rope tie on suitable position, realize the suspension to power cable.

A plurality of through holes are evenly formed in the outer surface of the steel tape armoring protective layer 4, the through holes are formed in the steel tape armoring protective layer 4, and the material cost of the steel tape armoring protective layer 4 is reduced.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. Improved generation multilayer PVC insulation power cable, including outer lag, its characterized in that: be equipped with interior lag in the outer lag, interior surface mounting steel band armor inoxidizing coating of lag, three first insulation cover is evenly arranged in the steel band armor inoxidizing coating, install many copper cores in the first insulation cover, be filled with fire-retardant packing rope between first insulation cover and the steel band armor inoxidizing coating, interior lag surface is paintd red paint, and is three be equipped with the second insulation cover between the first insulation cover, the fixed tractive steel wire in the second insulation cover, the outer fixed surface branch of second insulation cover, the branch other end radiates to in the fire-retardant packing rope along second insulation cover diameter direction.

2. The improved multilayer PVC insulated power cable of claim 1, wherein: a plurality of spacing grooves are formed in the inner surface of the outer protective sleeve in an annular equidistant mode, a plurality of spacing strips are fixed on the outer surface of the inner protective sleeve in an annular equidistant mode, the spacing strips and the inner protective sleeve are of an integrally formed structure, and the spacing strips are respectively inserted into the spacing grooves.

3. The improved multilayer PVC insulated power cable of claim 1, wherein: the supporting rod is installed a plurality ofly, and is a plurality of supporting rod evenly arranges at the insulating cover surface of second, supporting rod is the component that a polyvinyl chloride made, supporting rod and the insulating cover of second are the integrated into one piece structure.

4. The improved multilayer PVC insulated power cable of claim 1, wherein: and one end of the support rod, which is far away from the second insulating sleeve, is fixed with a raised head, and the raised head is arranged in the flame-retardant filling rope.

5. The improved multilayer PVC insulated power cable of claim 1, wherein: the outer protective sleeve and the inner protective sleeve are both members made of polyvinyl chloride, and aluminum hydroxide fire retardants are added into the outer protective sleeve and the inner protective sleeve.

6. The improved multilayer PVC insulated power cable of claim 1, wherein: the outer surface of the outer protective sleeve is equidistantly provided with a plurality of annular grooves, a cylinder ring is arranged in the annular grooves in a sliding mode, the outer surface of the cylinder ring is provided with a round hole, and a connecting rod is fixed in the round hole.

7. The improved multilayer PVC insulated power cable of claim 1, wherein: a plurality of through holes are uniformly formed in the outer surface of the steel tape armor protective layer.