CN103368117A

CN103368117A - MPP (Modified Poly-Propylene) electric power tube

Info

Publication number: CN103368117A
Application number: CN2013102667744A
Authority: CN
Inventors: 廖宝霞
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2013-06-29
Filing date: 2013-06-29
Publication date: 2013-10-23

Abstract

The invention relates to the technical field of tubular product structures, and provides an MPP (Modified Poly-Propylene) electric power tube, which is simple in structure, can be applied to non-excavation engineering and contributes to increasing the working efficiency of power communication. The MPP electric power tube comprises an outer wall and an inner cavity, wherein the inner cavity is formed in the outer wall; the outer wall is of a shape of a circular tube; and the inner cavity has a porous structure or forms a porous structure together with the outer wall. According to the MPP electric power tube, the outer wall of the MPP electric power tube is of the shape of the circular tube, so that the dragging effect is not influenced in non-excavation engineering application, and the phenomena of frangibility and explosion caused by stress concentration due to the shapes, including rhombus and the like, of the conventional porous tubes are improved; and the inner cavity has a porous structure or forms a porous structure together with the outer wall, so that the identification of a plurality of optical fibers can be enhanced, the working efficiency is increased, the tension and compression resistance of the inner cavity can be enhanced, and the extrusion molding efficiency of a product is increased. Meanwhile, the market resources are enriched, and the problem of simplification of products in the market is solved.

Description

A kind of MPP power pipe

Technical field

The present invention relates to the pipe structure technical field, more specifically, relate to a kind of MPP power pipe.

Background technology

In the prior art, it is main raw material(s) that the MPP power pipe adopts modified polypropene, need not dredge in a large number, cuts the earth and destroy the road surface when using, and in construction works such as road, railway, building, inferior special location, riverbed roughing-in, cables application is arranged all.Compare with traditional " grooving pipe laying method "; non-excavation power pipe engineering more adapts to current environmental requirement; removal is because of factors that disturbs residents such as stirring up a cloud of dust of causing of tradition construction, traffic jams; this technology can also can't implement to excavate at some the regional pipeline installation of operation, such as protection zone, historic site, business district, crops and protection zone, farmland, highway, river etc.

Antipriming pipe has very strong compatibility and usability, and it is fit to the wearing of many cables such as optical cable, cable, coaxial cable, PCM cable puts, and is widely used in telecommunications, broadcasting and TV, railway, army, universities and colleges, the intercommunication of big-and-middle-sized industrial and mining enterprises etc.

The MPP power pipe has solid wall pipe and bellows two at present, and is used for the solid wall pipe that only has of trenchless engineering.Therefore, the Development and Production of antipriming pipe will be the product that non-excavation pipeline updates, and can recognize many optical cables, increase work efficiency, form in the clandestine network world of nest of tubes at plum tube and bellows, non-excavation antipriming pipe will be prospect and the inexorable trend of communication pipeline development.

Summary of the invention

The present invention is intended to solve the problems of the technologies described above at least to a certain extent.

The purpose of this invention is to provide a kind of simple in structurely, can be used in trenchless engineering, improve the MPP power pipe of power communication operating efficiency.

The technical solution adopted for the present invention to solve the technical problems is: a kind of MPP power pipe, comprise outer wall and inner chamber, and described inner chamber is located in the outer wall, and described outer wall is round tube shape, and described inner chamber is loose structure or forms loose structure with outer wall.

Outer wall of the present invention is round tube shape, does not affect its traction effect in the engineering of non-excavation is used, and improving existing antipriming pipe is that the stress of water caltrop etc. is concentrated frangible, the explosive phenomenon that causes because of its profile; Inner chamber is loose structure or forms loose structure with outer wall, can increase the identification to multifiber, increases work efficiency, and also can strengthen tension, the compressive property of inner chamber, improves the ratio of briquetting that product is extruded.Enrich simultaneously market resource, solve the market product unification.

In one embodiment, described inner chamber is provided with centre bore, is provided with some ribs around the described centre bore, and described rib forms a plurality of edge holes with outer wall, centre bore.Preferably, described centre bore is regular polygon.More preferably, described centre bore is regular hexagon, thereby specious generous, and is stressed even, gains in strength, and uses reliable.

The invention has the beneficial effects as follows:

1, the present invention is non-excavation tubing, need not excavation construction, and is little to the ground traffic impact, both guaranteed the reliability of pipe network, reduced the failure rate of pipe network, simultaneously city appearance environment is greatly improved;

2, mainly take modified polypropene as raw material, have good electric insulating quality, higher heat distortion temperature and low temperature impact properties, light weight, smooth, frictional resistance is little, but the thermofussion welding docking;

3, the present invention is antipriming pipe, has very strong compatibility and usability, has increased pre-buried hole count, has improved speed of application, greatly reduces material and the construction cost of engineering unit;

4, outer wall is round tube shape, inner chamber is loose structure, can in the application of non-excavation, not affect its traction effect, also can reach the usability of its antipriming pipe, improving existing antipriming pipe is that the stress of water caltrop etc. is concentrated frangible, the explosive phenomenon that causes, the tension of reinforced pipe inner chamber, compressive property because of profile.

Description of drawings

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is the schematic cross-section of Fig. 1.

Accompanying drawing only is used for exemplary illustration, can not be interpreted as limitation of the present invention; For better explanation embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in the accompanying drawing some known configurations and explanation thereof may to omit be understandable.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.

As shown in Figure 1 and Figure 2, a kind of MPP power pipe of the present invention comprises outer wall 1 and inner chamber 2, and described inner chamber 2 is located in the outer wall 1, and described outer wall 1 is round tube shape, and described inner chamber 2 forms loose structure for loose structure or with outer wall 1.Wherein said inner chamber 2 is provided with centre bore 3, is provided with some ribs around the described centre bore 3, and described rib forms a plurality of edge holes 4 with outer wall 1, centre bore 3.Described centre bore 3 is regular polygon, is regular hexagon in the present embodiment, thus centre bore 3 around have six edge holes 4.Certainly, in other embodiments, quantity and the shape of centre bore have multiple choices, thereby the quantity of edge hole and shape are to there being multiple choices.

Adopt non-excavation directional drilling, guiding creep into, during pipe-jacking technology, the reaming of pulling back will be to be laid MPP power pipe when drawing in boring, mechanical traction power should be no less than 70N/mm ²Cable pulling lays when penetrating the MPP power pipe, and the reply cable is done drawing head, and takes measures to reduce cable friction power and wearing and tearing as far as possible, and the cable two ends should someone be guarded, and prevent cable fault.After cable pierces into the MPP power pipe, needn't be strictly stretching, some wavinesses that should relax (snake laying), relaxed length is about 0.5% of total length.After the trombone slide reaming is finished, should take measures to avoid the things such as masonry, lump to slip in the aperture, finish lay after, reply MPP power pipe is done shutoff.

MPP power pipe underground laying path should take into full account the subsurface rock soil property, and reduces the scissors crossing of underground various facilities as far as possible, should check before laying whether cable socket is intact, and sheath has not damaged.Excavate worker's well every 120 meters in principle, in order to avoid during cabling during the excessive or maintenance of frictional force, it is oversize to change cable.Directional drilling, guiding are when creeping into, and the aperture degree of crook should satisfy the requirement of cable and MPP power pipe minimum bending radius.

At the bottom of the MPP power pipe apex distance rail or the degree of depth of highway pavement should not be less than 1M, should be less than 0.5M at the bottom of the gutter, should be less than 1M apart from the degree of depth on avenue road surface; Pipe range generally should respectively stretch out 2M at two ends except crossing highway or track width, should stretch out carriageway surfacing at the avenue pipe range, should do bright well or staple shaft at road, track two ends; During the common railway parallel lay-up, approaching distance apart from the minimum permission of railway track should not be less than 3M.

Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the protection range of claim of the present invention.

Claims

1. a MPP power pipe is characterized in that, comprises outer wall and inner chamber, and described inner chamber is located in the outer wall, and described outer wall is round tube shape, and described inner chamber is loose structure or forms loose structure with outer wall.

2. MPP power pipe according to claim 1 is characterized in that, described inner chamber is provided with centre bore, is provided with some ribs around the described centre bore, and described rib forms a plurality of edge holes with outer wall, centre bore.

3. MPP power pipe according to claim 2 is characterized in that, described centre bore is regular polygon.

4. MPP power pipe according to claim 3 is characterized in that, described centre bore is regular hexagon.