CN205984354U

CN205984354U - Under -ground cable

Info

Publication number: CN205984354U
Application number: CN201620745674.9U
Authority: CN
Inventors: 白永旺
Original assignee: Tianjin Yuanjiu Technology Co Ltd
Current assignee: Tianjin Yuanjiu Technology Co Ltd
Priority date: 2016-07-15
Filing date: 2016-07-15
Publication date: 2017-02-22
Anticipated expiration: 2026-07-15

Abstract

Under -ground cable, armor include first armor and second armor, first armor around the package outside the inner sheath layer, first armor crowded package outward has rubber buffer layer, rubber buffer layer has the second armor around the package outward, rubber buffer layer includes that internal contact layer and collar are fixed in the outer contact layer outside the internal contact layer, follows cable length direction in the cavity between internal contact layer and the outer contact layer and is provided with a plurality of brace rods, and the brace rod will the cavity is separated for a plurality of cushion chamber. Rubber buffer layer's existence provides the buffering for the deformation of second armor among this under -ground cable, has still avoided the second armor to warp direct action to the injury that inner structure caused in cable internal structure on simultaneously, in addition, inside the rubber buffer layer first armor can for example insulating layer, wire provide further guard action to cable internal structure.

Description

Underground cable

Technical field

The utility model is related to field of cable technology, particularly to a kind of underground cable.

Background technology

Cable is widely used in all trades and professions, and it has multiple species and model, to meet the use requirement of different occasions. In the environment situations such as colliding with, extrudes easily, for example cable need to be embedded in underground, anti-extrusion in order to improve cable anticollision Performance, to reach the purpose extending cable service life, typically need to set up the armor of to several layers in oversheath.But armouring Layer also has certain limitation, because its hardness and intensity are all very big, when external forces effect is allowed to be deformed thereon, To cable internal structure, the infringement of such as insulating barrier, wire is very serious for this deformation.

Utility model content

In order to solve the above problems, the utility model is intended to improve by structure and optimize, and provides one kind can be to armouring Layer deformation produces cushioning effect, reduces the destructive underground cable that its deformation is brought.

The technical scheme of this underground cable is realized in：

Described underground cable, including some mutually stranded cores, is surrounded with belting layer, extrudes outside belting layer outside core There is inner restrictive coating, outside inner restrictive coating, be surrounded with armor, outside armor, be extruded with external sheath layer, armor includes the first armor With the second armor, the first armor, around being wrapped in outside inner restrictive coating, is extruded with cushion rubber layer, rubber buffer outside the first armor Layer is outer to be surrounded with the second armor；

Cushion rubber layer includes interior contact layer and set bag is fixed on external contact layer outside interior contact layer, interior contact layer and outer It is provided with some brace rods longitudinally along the cable, described cavity is divided into several by brace rod in cavity between contact layer Cushion chamber.

Further, described some brace rods are uniformly distributed in described cavity.

Further, the contact layer direction from the sensing of external contact layer, the thickness of brace rod is gradually become by little becoming larger again Little, accordingly, the width of cushion chamber is become larger by tapering into greatly again.

Further, all it is filled with packed layer between described core and core, core and belting layer.

Further, described core includes the wire stranded by some seal wires, is extruded with insulating barrier outside wire.

Further, described insulating barrier is rubber insulation or plastic insulating layer.

Further, described packed layer is made up of alkali-free glass cord or Ceramic silicon rubber packing.

Further, described belting layer is made up of water-swellable waterstop.

Further, described inner restrictive coating, cushion rubber layer and external sheath layer are made by nitrile rubber.

Further, described armor is steel-tape armouring.

Cushion rubber layer in this underground cable is carried out extruding operation using the mould being adapted with its shape and forms, when outer When power puts on this underground cable, external force is born by the second armor, and armor has certain elastic force, and pressure effect descends it Certain deformation can be produced, due to the presence of its inner rubber cushion, the deformation of the second armor is conducted to cushion rubber layer On, the external contact layer of cushion rubber layer deforms towards interior contact layer, and the external contact layer that exists for of cushion chamber provides enough changes Shape extension space, by successful removal, the presence of cushion rubber layer is the second armouring to the external force being ultimately applied to the second armor The deformation of layer provides buffering, also avoid deformation simultaneously and directly acts in cable internal structure to caused by internal structure Injury, additionally, the first armor within cushion rubber layer can provide into one to cable internal structure such as insulating barrier, wire The protective effect of step.

Brief description

The accompanying drawing constituting a part of the present utility model is used for providing further understanding to of the present utility model, and this practicality is new The schematic description and description of type is used for explaining the utility model, does not constitute to improper restriction of the present utility model.? In accompanying drawing：

Fig. 1 is this buried construction of cable schematic diagram.

Description of reference numerals：

In figure：1. seal wire, 2. insulating barrier, 3. packed layer, 4. belting layer, 5. inner restrictive coating, 6. the first armor, 7. rubber Cushion, 8. the second armor, 9. external sheath layer, contact layer, 72. external contact layer, 73. cushion chambers, 74. brace rods in 71..

Specific embodiment

It should be noted that in the case of not conflicting, the embodiment in the utility model and the feature in embodiment can To be mutually combined.

In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", " on ", D score, The orientation of instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction Or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, be not therefore understood that It is to restriction of the present utility model.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating Or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately It is described, " multiple " are meant that two or more.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning in the utility model for the term.

To describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

Underground cable described in the utility model, as illustrated, include some mutually stranded cores, further, institute State core and include the wire stranded by some seal wires 1, be extruded with insulating barrier 2 outside wire it is preferable that described insulating barrier 2 For rubber insulation or plastic insulating layer, it is surrounded with belting layer 4 outside core it is preferable that described belting layer 4 is by water-swellable sealing Band is made, and further, is all filled with packed layer 3 it is preferable that described fill out between described core and core, core and belting layer 4 Fill layer 3 to be made up of alkali-free glass cord or Ceramic silicon rubber packing, outside belting layer 4, be extruded with inner restrictive coating 5, inner restrictive coating It is surrounded with armor outside 5 it is preferable that described armor is steel-tape armouring, outside armor, be extruded with external sheath layer 9, armor bag Include the first armor 6 and the second armor 8, the first armor 6, around being wrapped in outside inner restrictive coating 5, is extruded with rubber outside the first armor 6 Glue cushion 7, is surrounded with the second armor 8 outside cushion rubber layer 7 it is preferable that described inner restrictive coating 5, cushion rubber layer 7 and outer Restrictive coating 9 is made by nitrile rubber；

Cushion rubber layer 7 includes interior contact layer 71 and set bag is fixed on external contact layer 72 outside interior contact layer 71, inside connects It is provided with some brace rods 74 longitudinally along the cable, brace rod 74 will be described in cavity between contact layer 71 and external contact layer 72 Cavity is divided into several cushion chambers 73, and further, described some brace rods 74 are uniformly distributed in described cavity.

Cushion rubber layer 7 in this underground cable is carried out extruding operation using the mould being adapted with its shape and forms, when When external force puts on this underground cable, external force is born by the second armor 8, and armor has certain elastic force, and pressure acts on Lower its can produce certain deformation, and due to the presence of its inner rubber cushion 7, the deformation of the second armor 8 is conducted to rubber On cushion 7, the external contact layer 72 of cushion rubber layer 7 deforms towards interior contact layer 71, cushion chamber 73 exist for external contact layer 72 provide enough deformation extension spaces, and the external force being ultimately applied to the second armor 8 is by successful removal, cushion rubber layer 7 Presence be the second armor 8 deformation provide buffering, also avoid deformation simultaneously and directly act on cable internal structure On to the injury caused by internal structure, additionally, the first armor 6 within cushion rubber layer 7 can be to cable internal structure Such as insulating barrier, wire provide further protection effect.

In this underground cable, point to interior contact layer 71 direction from external contact layer 72, the thickness of brace rod 74 is gradually become by little Taper into again greatly, accordingly, the width of cushion chamber 73 is become larger by tapering into greatly again.This structure of cushion chamber 73, Can either ensure that cushion chamber 73 has enough spaces to bear the external force conducted by the second armor 8, have so that brace rod 74 There is the stability that good enabling capabilities ensure cushion rubber layer 7 structure, point to interior contact layer 71 from external contact layer 72 simultaneously Direction, the thickness of brace rod 74 is first become larger by little, and the deformation of the external contact layer 72 of this structure gradually narrowing forms one Fixed restriction, prevents external contact layer 72 excessive deformation and damaged.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in the utility model Protection domain within.

Claims

1. a kind of underground cable, including some mutually stranded cores, is surrounded with belting layer (4), belting layer (4) is outward outside core It is extruded with inner restrictive coating (5), be surrounded with armor outside inner restrictive coating (5), outside armor, be extruded with external sheath layer (9), its feature It is：Armor includes the first armor (6) and the second armor (8), the first armor (6) around being wrapped in inner restrictive coating (5) outward, It is extruded with cushion rubber layer (7) outside first armor (6), outside cushion rubber layer (7), be surrounded with the second armor (8)；

Cushion rubber layer (7) include in contact layer (71) and set bag be fixed on interior contact layer (71) outside external contact layer (72), It is provided with some brace rods (74) in cavity between interior contact layer (71) and external contact layer (72) longitudinally along the cable, support Described cavity is divided into several cushion chambers (73) by muscle (74).

2. underground cable according to claim 1 it is characterised in that：Described some brace rods (74) are uniformly distributed in described In cavity.

3. underground cable according to claim 2 it is characterised in that：Contact layer (71) side from external contact layer (72) sensing To the thickness of brace rod (74) is tapered into by little becoming larger again, and accordingly, the width of cushion chamber (73) is by tapering into greatly Become larger again.

4. underground cable according to claim 3 it is characterised in that：Described core and core, core and belting layer (4) it Between be all filled with packed layer (3).

5. underground cable according to claim 4 it is characterised in that：Described core includes stranded by some seal wires (1) Wire, be extruded with insulating barrier (2) outside wire.

6. underground cable according to claim 5 it is characterised in that：Described insulating barrier (2) is rubber insulation or plastics Insulating barrier.

7. underground cable according to claim 4 it is characterised in that：Described packed layer (3) is by alkali-free glass cord or pottery Porcelain SiClx rubber filling bar is made.

8. underground cable according to claim 1 it is characterised in that：Described belting layer (4) is by water-swellable waterstop system Become.

9. underground cable according to claim 1 it is characterised in that：Described inner restrictive coating (5), cushion rubber layer (7) and External sheath layer (9) is made by nitrile rubber.

10. underground cable according to claim 1 it is characterised in that：Described armor is steel-tape armouring.