CN205978849U - Steel skeleton plastic composite pipe - Google Patents

Abstract

The utility model provides a steel skeleton plastic composite pipe, make up the wire net that forms including warp and weft, the inside and outside both sides of wire net are provided with inner layer plastic and outer layer plastic respectively, outer layer plastic's tip with the tip parallel and level of wire net, inner layer plastic have outstanding in the protruding portion of the tip of wire net. The utility model provides a steel skeleton plastic composite pipe can form butt fusion intensity height, of high quality sealing.

Description

A kind of steel skeleton plastic clad pipe

Technical field

This utility model is related to non-metal composite pipe road technical field, more particularly, to a kind of steel skeleton plastic clad pipe.

Background technology

Steel skeleton plastic clad pipe is the steel wire that warp with high intensity coppered steel wire as material and parallel are welded For skeleton, and steel wire inside and outside wall with thermoplastic polyethylene be combined obtained by novel pipeline, main holding in pipeline Splenium part is steel wire.In pipe conveying procedure, pumped (conveying) medium should be avoided as possible to flow in steel wire steel wire is caused Corrosion, and then affect pipeline pressure, accordingly, it would be desirable to sealing treatment is carried out to the end of pipeline.

Sealing of the prior art, generally uses Shooting Technique, and directly the pure section of moulding of end welding in pipeline is formed. Due to the impact expanded with heat and contract with cold, during the storage after formed product, can overall shrink at duct sealing, but due to pipeline The percent thermal shrinkage of internal two kinds of materials (steel wire and plastic polyethylene) differs greatly, and the contraction of metal steel wire is relatively small, makes Obtain in contraction process, the plastic polyethylene of pipeline ectonexine can produce to steel wire and shrink extruding along pipeline is radially inner Power, correspondingly, steel wire also can produce along pipeline radially outer expanding extruding power to the plastic polyethylene of its port so that sealing At mouthful, heat seal strength declines to a great extent it is difficult to ensure seal quality.

Therefore, how a kind of steel skeleton plastic clad pipe is provided, to form heat seal strength height, the measured sealing of matter, is still Those skilled in the art's technical problem urgently to be resolved hurrily.

Utility model content

The purpose of this utility model is to provide a kind of steel skeleton plastic clad pipe, and to be formed, heat seal strength is high, matter is measured Sealing.

For solving above-mentioned technical problem, this utility model provides a kind of steel skeleton plastic clad pipe, including warp and parallel The steel wire combining, the inside and outside both sides of described steel wire are respectively arranged with inner plastic and outer layer plastic, and described outer layer is moulded The end of material is concordant with the end of described steel wire, and described inner plastic has the prominent of the end protruding from described steel wire Portion.

Steel skeleton plastic clad pipe provided by the utility model, its inner plastic has the end protruding from steel wire Protuberance, is the plastics without steel wire at this, when forming sealing using the mode such as welding or injection thereon, in this protuberance Portion is not in the stress producing because shrinkage factor is different, and the welding interface between sealing and this protuberance is not easy to crack, thus Heat seal strength can be formed high, the measured sealing of matter.

Additionally, adopting said structure, in pipe conveying procedure, the medium within pipeline is along welding interface motion to steel wire The distance of net, increased the length of protuberance, thus largely reduce making on the basis of the thickness of inner plastic again With during medium within pipeline erosion probability that steel wire is brought it is ensured that steel skeleton provided by the utility model The service life of plastic composite pipe.

Alternatively, the length of described protuberance is more than or equal to 6mm.

Alternatively, also include sealing, described seal as circle ring column structure, described sealing is coaxially set with described inner plastic Put, and one end of described sealing is provided with annular opening, and the internal perisporium of described annular opening is tight with the periphery wall of described protuberance Close fit.

Alternatively, the radical length of described annular opening is identical with the radial thickness of described protuberance.

Alternatively, the described radial thickness sealing the one end away from described protuberance and described steel skeleton plastic clad pipe Thickness is identical.

Alternatively, the axial length of described sealing is more than or equal to 8mm.

Alternatively, the described sealing sealed as injection formation.

Alternatively, described sealing material therefor is high density polyethylene (HDPE).

Brief description

Fig. 1 is the cross-sectional view of steel skeleton plastic clad pipe provided by the utility model；

Fig. 2 is the cross-sectional view after steel skeleton plastic clad pipe welding sealing in Fig. 1.

In Fig. 1-2, brief description is as follows：

1 steel wire, 11 warps, 12 parallels, 2 inner plastics, 21 protuberances, 3 outer layer plastics, 4 sealings, 41 annular openings.

Specific embodiment

In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and tool The utility model is described in further detail for body embodiment.

Refer to Fig. 1-2, Fig. 1 is the cross-sectional view of steel skeleton plastic clad pipe provided by the utility model, Fig. 2 is the cross-sectional view after steel skeleton plastic clad pipe welding sealing in Fig. 1.

As depicted in figs. 1 and 2, this utility model provides a kind of steel skeleton plastic clad pipe, including warp 11 and parallel 12 The steel wire 1 combining, the inside and outside both sides of steel wire 1 are respectively arranged with inner plastic 2 and outer layer plastic 3, outer layer plastic 3 End concordant with the end of steel wire 1, and above-mentioned inner plastic 2 has the protuberance 21 of the end protruding from steel wire 1.

Steel skeleton plastic clad pipe provided by the utility model, its inner plastic 2 has the end protruding from steel wire 1 Protuberance 21, this protuberance 21 is the plastics without steel wire, preferably polythene material, thereon using welding or be molded When forming sealing 4 etc. mode, be not in the stress producing because shrinkage factor is different inside this protuberance 21, sealing 4 is dashed forward with this The welding interface going out between portion 21 is not easy to crack, thus being formed, heat seal strength is high, matter is measured to seal 4.

Seal 4 material therefors and be generally plastics, specific to this programme, its material therefor is high density polyethylene (HDPE), and prominent Polyethylene structure used by portion 21 and property are all more close.In the forming process of sealing 4, sealing 4 is molten with protuberance 21 There is not larger stress between junction face, and the thermostability of high-density polyethylene material and environmental stress crack resistance are all relatively yet Good, form sealing 4 using it, can further ensure to seal 4 quality.

Additionally, adopting said structure, in pipe conveying procedure, the medium within pipeline is along welding interface motion to steel wire The distance of net 1, increased the length of protuberance 21, thus largely reducing on the basis of the thickness of inner plastic 2 again Erosion probability that during using, the medium within pipeline is brought to steel wire 1 is it is ensured that provided by the utility model The service life of steel skeleton plastic clad pipe.

Above-mentioned protuberance 21 can be existed when steel skeleton plastic clad pipe produces, that is, producing steel frame-plastic again When closing pipe, the length of inner plastic 2 is more than steel wire 1 and outer layer plastic 3, and when producing, the end of inner plastic 2 is projected In steel wire 1 and outer layer plastic 3 to form this protuberance 21, protuberance 21 now has and inner plastic 2 identical thickness, And not containing steel wire, the surface quality of the periphery wall of protuberance 21 is also higher, using the steel skeleton plastic clad pipe of this structure The sealing 4 being formed, its heat seal strength is higher, better quality.

Above-mentioned protuberance 21 can also be to carry out turning in the periphery wall of the concordant steel skeleton plastic clad pipe in end, to go Formed except outer layer plastic 3 and steel wire 1.But the steel wire being arranged for spiral due to parallel 12, is difficult to during turning Except clean, remove steel wire for thorough, need the thickness that turning is larger, lead to the thinner thickness of protuberance 21, be unfavorable for subsequently locating The formation of sealing 4 in reason.For avoiding turning thickness larger problem during turning, can in above-mentioned turning process priority treatment warp 11, stop turning after warp 11 removes clean, and hammer into not removing clean parallel 12 in outer layer plastic 3.Due to this When parallel 12 be only residual fraction, the continuous helical structure of parallel 12 when substantially not possessing initial, then hammered into outer layer So as to as far as possible away from welding interface in plastics 3.In the forming process of sealing 4, between this part steel wire and protuberance 21 Although certain contraction sex differernce also can be produced, because its structure is less, and it is embedded in the shadow in protuberance 21, to welding interface Sound is less, still can largely ensure to seal 4 welding quality.

Further, the length of above-mentioned protuberance 21 can be more than or equal to 6mm.The length of above-mentioned protuberance 21 is bigger, When being conveyed using above-mentioned pipeline, the distance of pumped (conveying) medium to steel wire 1 is also bigger, preferably avoids within pipeline The erosion to steel wire 1 for the medium.And when using in different fields and application scenarios, by the difference of institute's pumped (conveying) medium, right The length requirement of above-mentioned protuberance 21 also difference, the different requirements in comprehensive variant field, the length of above-mentioned protuberance 21 It is preferably greater than or equal to 6mm.

With Fig. 1 as visual angle, the end of above-mentioned protuberance 21 may be at a vertical plane it is also possible to be formed and steel frame-plastic The coaxial round table surface of multiple tube.In the same manner, the end of above-mentioned outer layer plastic 3 can also be in a vertical plane or form round table surface.

As shown in Fig. 2 above-mentioned sealing 4 can be circle ring column structure, this sealing 4 and inner plastic 2 can be coaxially disposed, And one end of sealing 4 is provided with annular opening 41 (being right-hand member in Fig. 2).The internal perisporium of this annular opening 41 and the periphery of protuberance 21 Wall be fitted close, that is, the axial length of this annular opening 41 identical with the length of protuberance 21 so that this annular opening 41 can be complete Site preparation is fastened on protuberance 21, further to ensure between the internal perisporium of annular opening 41 and the periphery wall of protuberance 21 enough Welding area, and then ensure welding quality.The axial length of above-mentioned annular opening 41 might be less that the length of this protuberance 21 Degree, now, the periphery wall of protuberance 21 is not completely used for welding sealing 4, but only need to ensure there is therebetween enough melting Junction is amassed, you can largely ensure welding quality therebetween.

Still with Fig. 2 as visual angle, the radical length of above-mentioned annular opening 41 is identical with the radial thickness of protuberance 21, and seals The radial thickness of 4 one end away from protuberance 21 is identical with the thickness of steel skeleton plastic clad pipe.So, the end of protuberance 21 The end in portion, periphery wall and outer layer plastic 3 can all participate in sealing 4 welding, can obtain therebetween the welding area of maximum, So that it is guaranteed that the heat seal strength of the two.

It is to be understood that in addition to the annular opening 41 being interlocked with above-mentioned protuberance 21, above-mentioned sealing 4 also has and protrudes from this The part of protuberance 21, so that this sealing 4 and the end of protuberance 21 carry out good welding.Therefore, the axial length of sealing 4 The length of protuberance 21 should be more than, and in preceding sections, the length of protuberance 21 has been made with restriction, in this application may be used Further the axial length of this sealing 4 is preferably greater than or equal to 8mm.

For above-mentioned each scheme, the formation process of sealing 4 further can be limited, above-mentioned sealing 4 can be by injection Formed, between the formed sealing 4 of injection and protuberance 21, heat seal strength is higher, and welding quality is good.Above-mentioned sealing 4 can also be single Solely make, and then be bonded in protuberance 21 by way of welding, the production efficiency of this mode is higher, and cost is relatively low.But For heat seal strength, the intensity of the sealing 4 that Shooting Technique is formed is higher.

The above is only preferred implementation of the present utility model it is noted that ordinary skill people for the art For member, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improvements and modifications Also should be regarded as protection domain of the present utility model.

Claims (8)

1. a kind of steel skeleton plastic clad pipe, the steel wire (1) combining including warp (11) and parallel (12), described steel wire The inside and outside both sides of net (1) are respectively arranged with inner plastic (2) and outer layer plastic (3), the end of described outer layer plastic (3) and institute The end stating steel wire (1) is concordantly it is characterised in that described inner plastic (2) has the end protruding from described steel wire (1) Protuberance (21), and described protuberance (21) is identical with the thickness of described inner plastic (2).

2. steel skeleton plastic clad pipe according to claim 1 is it is characterised in that the length of described protuberance (21) is more than Or it is equal to 6mm.

3. steel skeleton plastic clad pipe according to claim 1 is it is characterised in that also include sealing (4), described sealing (4) it is circle ring column structure, described sealing (4) and described inner plastic (2) are coaxially disposed, and one end of described sealing (4) sets There is annular opening (41), and the internal perisporium of described annular opening (41) is fitted close with the periphery wall of described protuberance (21).

4. steel skeleton plastic clad pipe according to claim 3 is it is characterised in that the radial direction of described annular opening (41) is long Degree is identical with the radial thickness of described protuberance (21).

5. steel skeleton plastic clad pipe according to claim 4 is it is characterised in that described sealing (4) is away from described prominent The radial thickness of one end in portion (21) is identical with the thickness of described steel skeleton plastic clad pipe.

6. steel skeleton plastic clad pipe according to claim 3 is it is characterised in that the axial length of described sealing (4) is big In or be equal to 8mm.

7. the steel skeleton plastic clad pipe according to any one of claim 3-6 is it is characterised in that described sealing (4) is The sealing (4) that injection is formed.

8. steel skeleton plastic clad pipe according to claim 7 is it is characterised in that described sealing (4) material therefor is height Density polyethylene.