CN207742967U - High roundness round conductor lv power cable - Google Patents

Abstract

The utility model discloses a kind of high roundness round conductor lv power cables, it is characterized in that if core, which is equipped with carried interest, has the round molded line conductor of insulating layer, and a full circle body is formed by special-shaped packing, high strength elastic band is set outside the full circle body, sheath is equipped with outside elastic band, armor is equipped with outside sheath, outermost layer is equipped with outer jacket.Design squeezes test-run a machine head and solves the problems such as extruding layer is close, core occurs in product surface or cable core is twisted trace, avoids and phenomena such as muscle, breakage and disconnection has occurred, improves the disposable qualification rate of product；Physical mechanical property is good, when solving production because tension is uneven, air pressure is excessive, more than number of bends due to the core problem on deformation that occurs, reduce the probability of armor damage inner/outer sheath, be not susceptible to distortion of the cable in use and be damaged；Save raw material.

Description

High roundness round conductor lv power cable

Technical field

The utility model is related to field of cable technology, especially a kind of high roundness round conductor lv power cable.

Background technology

There are many structure types for high roundness power cable in the prior art, as patent announcement number is CN205050606U, a kind of cable of high roundness, including rubber outer, metal armor layers, outer water-absorbing resin layer, flax Layer, metal carbonyl conducting layer, center circle flood, interior water-absorbing resin layer, steel core, wherein steel core outer surface are coated with interior water-absorbing resin layer, Interior water-absorbing resin layer outer surface is coated with center circle flood, and center circle flood outer surface is coated with metal carbonyl conducting layer, plain conductor Layer outer surface is coated with flax layer, and flax layer outer surface is coated with outer water-absorbing resin layer, and outer water-absorbing resin layer outer surface is coated with Metal armor layers, metal armor layers outer surface are coated with rubber outer.For another example patent announcement number designs for CN204463890U A kind of high roundness submerged cable of resistance to highly basic high temperature resistant, includes cable core, cable core be combined by 4 groups of stranded conductors and At the periphery of every group of stranded conductor is enclosed with insulating layer, polytetrafluoroethylene film layer is surrounded with outside cable core, in polytetrafluoro The outside of vinyl film layer is enclosed with shielded layer, and the outside of shielded layer is enclosed with sheath, between cable core and film layer, is twisted Packing is filled in gap between insulating layer of conductor and insulating layer.

Electric wire is to transmit information, conveying electric energy and the indispensable basic device of the various motors of manufacture, electric appliance, instrument Material, from extra high voltage network to various micro machines, the links of people's production and life all be unable to do without electric wire, are explained For " blood vessel " and " nerve " of national economy.Should take more innovation as driving, output while it can meet basic requirement Fine work manufactures, and constantly optimizes in performance, appearance, structure.The conventional low voltage power cable of domestic production at present was producing It is poor often to will appear cable roundness in journey, since the roundness of cable core is poor, nothing can be caused in connector type selecting To marking product；Since cable roundness is poor, finished cable can bring constructional difficulties to client, additionally increase construction cost；Outside It is general to see evaluation, product competitiveness is insufficient, or even also has the unqualified phenomenon of product, and the higher product of roundness is most numeral system The quality for making factory pursues a goal.

Invention content

Purpose of the utility model is to solve the above problem, provide it is a kind of can improve production efficiency, improve outside cable Appearance quality, and improve the high roundness round conductor lv power cable of electric wire physical mechanical property, service life.

The above-mentioned technical problem of the utility model is mainly to be addressed by following technical proposals：A kind of high roundness Round conductor lv power cable, if it is characterized in that core, which is equipped with carried interest, has the round molded line conductor of insulating layer, and by different Type packing forms a full circle body, and high strength elastic band is arranged outside the full circle body, is equipped with outside elastic band interior Sheath, sheath outside are equipped with armor, and outermost layer is equipped with outer jacket.

In high roundness round conductor lv power cable above-mentioned, if preferably, the carried interest circle molded line conductor Diameter is equal, and tangent arrangement two-by-two.

In high roundness round conductor lv power cable above-mentioned, if preferably, the abnormal shape packing is by carried interest Round molded line conductor is separated into (several+1) a region, if including positioned at carried interest circle molded line conductor outside and high intensity bullet Property band between several pieces of equal densities constituting, the identical special-shaped area of volume.

In high roundness round conductor lv power cable above-mentioned, preferably, the high strength elastic band around 45 ° of cornerite ＜.

In high roundness round conductor lv power cable above-mentioned, preferably, the high strength elastic band works Thickness is equal.

In high roundness round conductor lv power cable above-mentioned, preferably, the sheath outer circle is by squeezing The completely circular structure that the molding of pressure type head extrusion, tool are compensated through circularity.

In high roundness round conductor lv power cable above-mentioned, preferably, the outer jacket outer circle is by squeezing The completely circular structure that the molding of pressure type head extrusion, tool are compensated through circularity.

In high roundness round conductor lv power cable above-mentioned, preferably, the armor is flat wire armour Dress or circle wire armouring or bimetallic strip armouring or interlocking sheathed structure.

Since typical circular conductive surface deflection is small, rounding property is poor, and the technical program uses round molded line conductor, Surface deformation amount increases, and conductor rounding property is made integrally to improve.This programme, which can be used, customizes packing filling made of particular process, Different up and down in Multi-core cable forming to avoid the packing material used in the prior art, different parts compactedness is respectively not Equally, cable roundness phenomenon cannot be met.Though increasing a small amount of cost, keep each filling position close, filling is such as same whole Body, practicability, aesthetics greatly promote.Using high-strength high-elasticity band, keep cable core close, is not easy loose.

This programme is advocated and stranding is suitble to match mould reasonability.It is the key that cabling process with mould in being produced in stranding Control point.If excessive with mould, can make it is loose after cable cabling, and when receiving on take-up reel, the influence of radius by bending, Core is easy to scatter, and influences the roundness of stranding.And it is too small with mould, it is easy galling core.And rationally adjust each pay off rack Tension makes the equalization of strain between each core；For vapour-pressure type crawler belt rear haulage, air pressure is suitably adjusted, fluted body can also be replaced Belt pulley reduces the probability that cable is crushed.It also needs to rationally adjust wrapping angle, tension, ensure not loose around packaging material；Around It is wrapped by the number of plies of process stipulation, thickness, Duplication, pitch progress when packet, reach the requirement of smooth band, consolidation, no wrinkle.

In addition, this programme is using the first-born production liner layer of extruding test-run a machine and oversheath.It avoids after squeezing out still as entity is presented Go out original face shaping phenomenon after the completion of core previous process.

When armor produces, the optional type of armoring material is more, coordinates corresponding armored equipment and technique, more to meet Kind armoured type production requirement rationally adjusts the angle and tension of the wrapped board of armored equipment, makes gold in bimetallic strip armouring It is close wrapped on interior lining to belong to band, ensures metal tape wrapped pitch and Duplication.After being produced due to preceding working procedure liner layer Cable roundness is high, and metal tape can be closer on liner layer, it is not easy to metal tape bottom pour ladle, protrusion, loose occurs The problems such as.

The utility model has the beneficial effects that：

1, improve production efficiency, design squeeze test-run a machine head solve extrude that layer is close, core occurs in product surface or The problems such as trace that cable core is twisted, avoids the disposable qualification rate for muscle, breakage occurred and having improved product phenomena such as disconnection.

2, physical mechanical property is good, when solving production may it is uneven because of tension, air pressure is excessive, more than number of bends due to occur Core deformation.The probability for reducing armor damage liner layer and oversheath, is not susceptible to distortion of the cable in use It is impaired.

3, surfacing, roundness is high, easy for construction.

4, raw material are saved, simple production process is made to define.It is being opened since liner layer and oversheath production squeeze out thickness Just define when matching mould before machine production, too big variation will not occur for when production, facilitate production pilot process quality control, guarantee Cable qualification rate, to reducing production cost.It is guarantee thickness that conventional low power cable, which is avoided, in extrusion operation Meet nominal thickness requirement, often thickness is partially thick in rigid booting production, so that thickness is met by tool parameters adjustment again later The bad phenomenons such as technological requirement.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the utility model.

In figure：1. round molded line conductor, 2. insulating layers, 3. special-shaped packings, 4. high strength elastic bands, 5. sheaths, 6. armor, 7. outer jackets.

Specific implementation mode

Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.

A kind of high roundness round conductor lv power cable of the present embodiment, being equipped with 4 strands with its core has insulating layer 2 For round molded line conductor 1, as shown in Figure 1, and by the one full circle body of formation of special-shaped packing 3, being arranged outside full circle body High strength elastic band 4, elastic band outside are equipped with armor 6, are protected outside outermost layer setting equipped with sheath 5,5 outside of sheath Layer 7.

4 strands of round molded line 1 diameters of conductor are equal, and are arranged by tangency location two-by-two.Special-shaped packing 3 is by 4 strands of round types Line conductor 1 is separated into 5 regions, including the structure between 4 bursts of round 1 outsides of molded line conductor and high strength elastic band 4 At 4 pieces of equal densities, the identical special-shaped area of volume, the arc side water chestnut shape body among also 4 strands round molded line conductors 1.

Further, the lapping angle of high strength elastic band 4 is 40 °, and all working layer thickness is equal.Sheath 5 be by Squash type head extrusion is molded, and completely circular structure is being obtained after circularity automatically compensation.Flat wire may be used in armor 6 Armouring or circle wire armouring can also use bimetallic strip armouring and interlocking sheathed structure to be molded.7 outer circle of outer jacket Same use is molded by squash type head extrusion, and obtains completely circular structure after circularity compensates automatically.

Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, any new to this practicality Structure etc. after the simple transformation of type belongs to the scope of protection of the utility model.

Claims (8)

1. a kind of high roundness round conductor lv power cable, if it is characterized in that core, which is equipped with carried interest, has insulating layer (2) Round molded line conductor (1), and a full circle body is formed by special-shaped packing (3), high intensity is set outside the full circle body Elastic band (4), elastic band outside are equipped with sheath (5), armor (6) are equipped with outside sheath, and outermost layer is equipped with outer shield Layer (7).

2. high roundness round conductor lv power cable according to claim 1, it is characterised in that：If the carried interest circle Shape molded line conductor (1) diameter is equal, and tangent arrangement two-by-two.

3. high roundness round conductor lv power cable according to claim 1 or 2, it is characterised in that：The abnormal shape Packing (3) by carried interest circle molded line conductor (1) if be separated into multiple regions, if including positioned at carried interest circle molded line conductor External abnormal shape area identical with several pieces of equal densities constituted between high strength elastic band (4), volume.

4. high roundness round conductor lv power cable according to claim 1 or 2, it is characterized in that：The high intensity 45 ° of the lapping angle ＜ of elastic band (4).

5. high roundness round conductor lv power cable according to claim 1 or 2, it is characterised in that：It is described high-strength Elastic band (4) operation thickness of degree is equal.

6. high roundness round conductor lv power cable according to claim 1 or 2, which is characterized in that described is interior Sheath (5) outer circle is the completely circular structure compensated through circularity by the molding of squash type head extrusion, tool.

7. high roundness round conductor lv power cable according to claim 1 or 2, which is characterized in that described is outer Sheath (7) outer circle is the completely circular structure compensated through circularity by the molding of squash type head extrusion, tool.

8. high roundness round conductor lv power cable according to claim 1 or 2, which is characterized in that the armouring Layer (6) is flat wire armouring or circle wire armouring or bimetallic strip armouring or interlocking sheathed structure.