CN207895878U - A kind of bending resistance pressure resistance cross-inked polyethylene power cable - Google Patents

Abstract

The utility model discloses a kind of bending resistance pressure resistance cross-inked polyethylene power cable, which includes several inner cores, the wrapping layer that inner core is bundled together, twist-tie component and protective metal shell successively from inside to outside.Provide a kind of power cable that pressure resistance is resistant to bending, pressure-resistant it can be that the sheath for using metal quality with reason resistant to bending, protective metal shell, which is not afraid of, exposes to the weather, stabilization firm in structure, it is uniquely the disadvantage is that stiff, it is not flexible, so being spliced here using multistage guard component, and guard component can occur freely to rotate by twist-tie component to each other, avoid the inflexible problem of protective metal shell well.

Description

A kind of bending resistance pressure resistance cross-inked polyethylene power cable

Technical field

The utility model is related to the technical field of communication network of wire transmission more particularly to a kind of bending resistance pressure resistance to be crosslinked poly- second Alkene power cable.

Background technology

Cross-linked polyethylene insulated cable is a kind of cable suitable for fields such as power distribution networks, has PVC insulated cables can not The advantages of analogy, it is simple in structure, light-weight, heat-resisting it is good, load capacity is strong, non-fusible, resistant to chemical etching, high mechanical strength. The method that cross-linked polyethylene insulated cable uses peroxide crosslinking, makes polyethylene molecule become three dimensional network from linear molecular structure Shape structure becomes thermosets by thermoplastic material, and operating temperature is increased to 90 DEG C from 70 DEG C, significantly improves the current-carrying of cable Ability.The XLPE of netted stereochemical structure has very excellent heat resistance, and for Long-term service temperature up to 90 DEG C, the thermal life is reachable 40 years.XLPE maintains the original good insulation characteristics of PE, and insulation resistance further increases.Due to being established between macromolecular New chemical bond, hardness, rigidity, wearability and the impact resistance of XLPE are improved, to compensate for PE easily by environmental stress And the shortcomings that being cracked.XLPE has stronger acid and alkali-resistance and oil resistivity, and combustion product is mainly water and carbon dioxide, to ring The harm in border is smaller, meets the requirement of modern fire safety.

The cable inevitable effect being under pressure in the actual use process causes the edge of cable to squeeze and opens at any time It splits, the core of leading inside cable presses together, and broken the case where leading to short circuit or electric leakage, best protective layer surely belongs to metal quality Sheath, but protective metal shell has the shortcomings that inflexible, and cable needs a degree of bending unavoidably when in use, Some also needs to frequent bending, this is very undesirable for the sheath of metal material.

The utility model mainly solves the problems, such as cable not compression resistance, when using sheath made of metal, successfully solves The certainly unpliant disadvantage of protective metal shell.

Utility model content

The utility model in view of the deficiencies of the prior art, provides a kind of guard component splicing composition sheath of multisection type, packet It is rolled in the surface of cable, can be both bent anywhere or anytime, while can be anti-extrusion.

The utility model is realized by following technological means solves above-mentioned technical problem：

A kind of bending resistance pressure resistance cross-inked polyethylene power cable, including several inner cores, wrap up inner core wrapping layer, several Twist-tie component and several protective metal shell elements；

The twist-tie component includes stainless steel annulus and four stainless steel cylindrical bumps, four stainless steel cylinders Uniform welding is distinguished in the outer ring surface of annulus in one end disc center of shape protrusion, and the inner ring surface of the annulus is embedded in wrapping layer；

The tube body that the guard component is led in being in, the both ends of the guard component are both provided with forked elongated end, described to prolong It is in two arcwall faces, axisymmetrical of described two arcwall faces about the tube body, the arc at the guard component both ends to stretch end Face is about the tube body axis centre central symmetry, and the arcwall face center is both provided with circular hole, the adjacent jacket element Forked elongated end is mutually clamped, and twist-tie component is mounted at the engaging, and four of the twist-tie component are cylindric convex Rise and be each passed through the circular hole of arcwall face, several described guard components are mutually clamped be in the pipe that leads to, the pipe is mounted on On the outside of wrapping layer.

Preferably, the inner core includes anaerobic circular copper wire, and the anaerobic circular copper wire has wrapped up insulating layer, the insulating layer Including surface physics polyethylene foamed material.

Preferably, the wrapping layer includes cross-linking polyethylene materials.

Preferably, the length range of the guard component is 5~10cm.

The utility model has the advantage of：A kind of power cable that pressure resistance is resistant to bending is provided, it can be pressure-resistant and resistant to bending The reason of be that the sheath for using metal quality, protective metal shell, which is not afraid of, exposes to the weather, stabilization firm in structure, unique disadvantage It is stiff, not flexible, so be spliced here using multistage guard component, and guard component passes through torsion to each other Structural member can occur freely to rotate again, avoid the inflexible problem of protective metal shell well.

Further, wrapping layer uses crosslinked polyethylene material, with tridimensional network, is become by thermoplastic material Thermosets, operating temperature are increased to 90 DEG C from 70 DEG C, significantly improve the current-carrying capability and heat-resisting ability of cable.

Description of the drawings

Fig. 1：For the cross section structure schematic diagram of the utility model cable.

Fig. 2：For the structural schematic diagram of the protective metal shell of the utility model cable.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to The range of the utility model protection.

Embodiment：

As shown in Figure 1：A kind of bending resistance pressure resistance cross-inked polyethylene power cable, including several inner cores, the packet for wrapping up inner core Covering layer 20, several twist-tie components and several protective metal shell elements 30；

The twist-tie component includes stainless steel annulus 10 and four stainless steel cylindrical bumps 11, four described raised 11 One end disc center distinguish uniform welding in the outer ring surface of annulus 10, the inner ring surface of the annulus 10 is embedded in wrapping layer 20；

As shown in Figure 2：The tube body that the guard component 30 is led in being in, the both ends of the guard component 30 are both provided with forked Elongated end, the elongated end are in two arcwall faces, axisymmetrical of described two arcwall faces about the tube body, the sheath member For the arcwall face at 30 both ends of part about the tube body axis centre central symmetry, the arcwall face center is both provided with circular hole, described The forked elongated end of adjacent jacket element 30 is mutually clamped, and twist-tie component, the torsion structure are mounted at the engaging Four cylindrical bumps 11 of part are each passed through the circular hole of arcwall face, several described guard components 30 are mutually clamped be in lead to Pipe, the pipe are mounted on 20 outside of wrapping layer.

On the one hand twist-tie component plays the role of supporting guard component 30, the forked extension of adjacent jacket element 30 It can staggeredly fit together, then be realized and be flexibly connected by twist-tie component, make cable can be with when needing bending Random rotates.Guard component 30 belongs to the protection element of metal material, and the utility model can be pressure-resistant and resistant to bending Reason is that the sheath for using metal quality, and protective metal shell, which is not afraid of, exposes to the weather, stabilization firm in structure, it is unique the disadvantage is that It is stiff, it is not flexible, so be spliced here using multistage guard component 30, and guard component 30 passes through torsion to each other Building element can occur freely to rotate again, avoid the problem of protective metal shell is bent well.

What needs to be explained here is that the cyclic structure 10 of twist-tie component is connect by way of inlaying with wrapping layer 20 , the comparison of connection is firm, will not arbitrarily shift, four 11 conducts of cylindrical bump being welded on thereon in cyclic structure The shaft that circular hole is formed in guard component 30 can be forked by 30 both ends of guard component when cable needs bending The interlaced bending in extension is realized.

The inner core includes anaerobic circular copper wire 40, and the anaerobic circular copper wire 40 has wrapped up insulating layer 41, the insulating layer 41 include surface physics polyethylene foamed material.

The wrapping layer 20 includes cross-linking polyethylene materials.

The length range of the guard component 30 is 5~10cm.

Above several points are to optimize the utility model, so that it is more perfectly realized required technique effect, be crosslinked poly- Ethylene material has tridimensional network, becomes thermosets by thermoplastic material, and operating temperature is increased to 90 DEG C from 70 DEG C, Significantly improve the current-carrying capability and heat-resisting ability of cable.Suitable control guard component 30 can the perfect arc for controlling cable folding Degree.

It should be noted that herein, if there are first and second or the like relational terms to be used merely to one A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.

Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to aforementioned reality Example is applied the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these Modification or replacement, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (4)

1. a kind of bending resistance pressure resistance cross-inked polyethylene power cable, it is characterised in that：Package including several inner cores, package inner core Layer（20）, several twist-tie components and several protective metal shell elements（30）；

The twist-tie component includes stainless steel annulus（10）With four stainless steel cylindrical bumps（11）, four stainless steels Cylindrical bump（11）One end disc center distinguish uniform welding in annulus（10）Outer ring surface, the annulus（10）Inner ring Face is embedded in wrapping layer（20）；

The guard component（30）The tube body led in being in, the guard component（30）Both ends be both provided with forked elongated end, institute It is in two arcwall faces, axisymmetrical of described two arcwall faces about the tube body, the guard component to state elongated end（30）Two For the arcwall face at end about the tube body axis centre central symmetry, the arcwall face center is both provided with circular hole, the adjacent shield Cover element（30）Forked elongated end be mutually clamped, twist-tie component, four torsion structures are mounted at the engaging The stainless steel cylindrical bump of part（11）It is each passed through the circular hole of arcwall face, several described guard components（30）It is mutually clamped and is in In lead to pipe, the pipe be mounted on wrapping layer（20）Outside.

2. a kind of bending resistance pressure resistance cross-inked polyethylene power cable according to claim 1, it is characterised in that：The inner core includes Anaerobic circular copper wire（40）, the anaerobic circular copper wire（40）Wrapped up insulating layer（41）, the insulating layer（41）Including surface object Haircut bubble polythene material.

3. a kind of bending resistance pressure resistance cross-inked polyethylene power cable according to claim 1, it is characterised in that：The wrapping layer （20）Including cross-linking polyethylene materials.

4. a kind of bending resistance pressure resistance cross-inked polyethylene power cable according to claim 1, it is characterised in that：The guard component （30）Length range be 5 ~ 10cm.