CN101512406A

CN101512406A - Method of installing a conduit, innerduct, and cable

Info

Publication number: CN101512406A
Application number: CNA2007800326254A
Authority: CN
Inventors: 戴维·D·莫里斯
Original assignee: Milliken and Co
Current assignee: Milliken and Co
Priority date: 2006-08-31
Filing date: 2007-08-29
Publication date: 2009-08-19
Also published as: CN106772848A; CN106873110A

Abstract

Flexible textile innerducts are provided with multiple longitudinal chambers. A conduit is formed with the flexible textile innerducts disposed internally. After the conduit is formed with the flexible textile innerducts therein, the conduit is positioned in the use position by burying the conduit or locating it within a body. A cable is disposed within the longitudinal chambers of the flexible innerducts with the use of a pull line or by blowing the cable into the longitudinal chamber.

Description

The method of conduit, inner catheter and cable is installed

Background technology

Thereby the known textile innerduct that adopts in conduit helps to install mounted cable in cable and the separation conduit.In the art methods that adopts inner catheter, before being installed to textile innerduct in the conduit, conduit is positioned over its precalculated position.By drawing, blow etc. textile innerduct is installed among the conduit.After being installed to inner catheter in the conduit, one or more cable is installed in the appropriate innerduct chamber.Pass inner catheter by blowing cable, adopt traction band or traction rope tractive cable to pass inner catheter or the like cable can be installed among the inner catheter.Yet this technology makes that inner catheter is installed big difficulty after in a single day conduit is in place.Therefore, need to reduce device and the system that the inner catheter installation difficulty also reduces the overall installation technology difficulty thus.

Description of drawings

Fig. 1 has shown the perspective section view that can be used on conduit, inner catheter and traction band and/or cable-assembly among the present invention; With

Fig. 2 has shown the block diagram of an embodiment of explanation installation method of the present invention.

Embodiment

With reference now to Fig. 1,, shown conduit 10, be positioned over flexible innerduct 100,200 and 300 wherein.Conduit cable 410 and conduit pull line 420 are placed in the conduit 10 too.Flexible conduit 100,200 and 300 has innerduct chamber 110/120/130,210/220/230 and 310/320/330 respectively.Though flexible innerduct 100,200,300 is described to have a plurality of innerduct chamber, flexible innerduct 100,200,300 also can have single innerduct chamber, two innerduct chamber, perhaps surpasses two innerduct chamber.

Be placed among the innerduct chamber 110,120 and 130 of flexible conduit 100 is draught line 111,121,131 or band.Draught line 111,121 and 131 extends to the whole length of vertical cavity of innerduct chamber 110,120 and 130 respectively.Draught line 111,121 and 131 is to be used to draw the material rope that cable passes corresponding innerduct chamber 110,120 and 130.Another mode, each innerduct chamber of flexible conduit 100 can be empty, such as about flexible innerduct 200 and associated innerduct chambers 210,220 and 230 shown examples.In another embodiment, one or more cable can be placed among each innerduct chamber 110,120 and 130 of flexible innerduct 100, such as about cable 315, the 325 and 335 shown examples among the associated innerduct chambers 310,320 and 330 that is placed on flexible innerduct 300.

As shown in the figure, flexible innerduct 100,200 and 300 is flexible textile innerducts.Textile innerduct 100 has one or more textile material that forms innerduct chamber 110,120 and 130.The textile that will form each innerduct chamber 110,120 and 130 by the seam 101 that is positioned at textile innerduct 100 outer ledges is combined as a whole.Similarly,

textile innerduct

200 and 300 be respectively in conjunction with and form one or more textile material of associated innerduct chambers 210,220 and 230 and 310,320 and 330.

Textile innerduct 100 have substantially along textile innerduct 100 vertically trend warp thread and basic along with the weft yarn of textile innerduct 100 perpendicular trends.In one embodiment, the textile material that forms textile innerduct 100 is a plain cloth, and it has 520 Denier nylon, 6 monofilament weft yarns of vertically last per inch 33 per inch 32 latitude numbers on 520 several Denier polyester monofilament warp thread and broadwise.In another embodiment, the textile material that forms textile innerduct 100 is a plain cloth, and it has per inch 50 through the 520 Denier polyester monofilament warp thread of number and 350 Denier nylon, 6 monofilament weft yarns of per inch 28 latitude numbers.In another embodiment, the textile material that forms textile innerduct 100 is a plain cloth, it has 350 Denier nylon, 6 monofilament yarns that replace and 2 strands (ply) 300 Denier polyester polyfilament yarns that per inch 50 is walked yarn through 520 Denier polyester monofilament warp thread and " pick and pick " broadwise of number.Though these examples provide possible yarn and structure, also there are other possibilities, such as using

polypropylene.Textile innerduct

200 and 300 can be the textile innerduct that has with textile innerduct 100 same structures.

Though described the textile innerduct that is used as flexible innerduct 100,200 and 300 according to concrete structure, also can use the textile innerduct of other structures in the present invention.For example, the U.S. US 6 that announces October 16 calendar year 2001,304,698 (" ' 698 patents "), textile innerduct described in " ConduitInsert for Optical Fiber Cable " can be used as one or more in described flexible textile innerducts 100,200 and 300, and described patent is in the whole introducing of this mode with concrete reference.As can have a plurality of cavitys that form by the tissue layer that combines at layer outward flange at the alternative textile inner catheter described in ' 698 patents.Can perhaps form tissue layer by many that separate by wall scroll folding on its Width.Tissue layer can have different width, therefore forms to have the innerduct chamber of the bias that is used for aperture position.By using the monofilament polyester warp thread to strengthen intensity in the vertical, on broadwise, use nylon monofilament to be used for the opening bias as weft yarn, the internal cavities that is formed by the bar with different in width can be positioned under the open state.In another embodiment, make textile innerduct 100,200 and 300 with the yarn that the material that contains flame-retardant additive forms, described flame-retardant additive is such as the melamine urate, thereby it is squeezed in and makes it to have anti-flammability in the yarn.Be to announce on April 6th, 2004 that the title of giving David Drew Morris is the US 6 of " Fire Resistant Conduit Insert forOptical Fiber Cable ", 718, the embodiments of the present invention of using fire proofing have been described, in the whole introducing of this mode in 100 with concrete reference.

With reference now to Fig. 2,, shown the block diagram of describing an embodiment of the inventive method.As shown in the figure, described method starts from providing the step 510 of flexible innerduct, such as the flexible innerduct among Fig. 1 100,200 and 300.Flexible innerduct has at least one vertical innerduct chamber, but also can have two or more.The flexible innerduct that is provided can be textile innerduct, such as above according to flexible textile innerducts 100,200 or 300 descriptions of being carried out.Provide at least one flexible innerduct to be used for following process, yet, two or more flexible innerduct in described technology, also can be used.When using many flexible innerduct, they can have same configuration or not isostructure.In one embodiment, in the innerduct chamber of the flexible innerduct that is provided, placed one or more draught line.

After the step 510 that one or more flexible innerduct is provided, in step 520, form conduit and one or more flexible innerduct vertically is placed in the conduit.Single flexible innerduct can be placed in the conduit, perhaps many flexible innerduct be placed in the conduit.Usually, when forming conduit, one or more flexible innerduct is placed in the conduit, such as in co-extrusion pressure technology.The conduit that wherein has a flexible innerduct can form short length, and such as one (1) to 50 (50) meters, but it is more to form long length such as 50 (50) to 500 (500) meters or longer then benefit.One or more flexible innerduct vertically is placed on makes flexible innerduct in conduit, to slide in the conduit.In one embodiment, when described flexible innerduct is that the warp thread of textile innerduct is vertically placed along conduit when having the textile innerduct of warp thread, weft yarn is placed to be basically perpendicular to longitudinally broadwise.In one embodiment, extrude conduit by high density polyethylene.Step 520 comprises that also the flexible innerduct adding of following in the conduit is positioned at cable outside the flexible innerduct and/or draught line within the conduit, such as cable among Fig. 1 410 and draught line 420.

After forming conduit and place the step 520 of flexible innerduct in conduit, in step 530, the catheter installation that wherein has flexible innerduct is to the position of using described conduit.In most of the cases, catheter placement needs to excavate on the ground the groove that is used for conduit, and conduit is put into groove and buried conduit.Yet, thereby also can be by conduit being put into the object passage catheter placement that is used for described conduit.Except that above-mentioned listed step, the conduit that described method can be included in after the step 520 that forms conduit and the step 530 of catheter placement will wherein have flexible innerduct before is placed on bobbin or the spool, conduit on transportation bobbin or the spool, and the step of in step 530, before the catheter placement flexible innerduct being taken off from bobbin or spool.

Lay after the step 530 of the conduit that wherein has flexible innerduct, in step 540, cable is placed in the innerduct chamber of flexible innerduct.In the first embodiment, thus lay to put in place and place cable by using the draught line tractive cable be positioned in advance in the flexible innerduct chamber to pass flexible innerduct.Another mode can be blown the position of cable to the innerduct chamber that is arranged in flexible innerduct.The step 540 that cable is positioned in the innerduct chamber of flexible innerduct can be as required, for the different innerduct chamber that are used for flexible innerduct and the different innerduct chamber that are used for other flexible innerduct of conduit repeat repeatedly.In addition, insert among the conduit and be positioned at draught line beyond the flexible innerduct and can after conduit is in place, be used for other flexible innerduct or cable of tractive.

Claims

1. method may further comprise the steps:

A) provide flexible innerduct with at least one vertical innerduct chamber;

B) form conduit and vertically be placed on flexible innerduct in the conduit;

C) be placed at described formation conduit and with flexible innerduct after the step in the conduit, the catheter installation that will contain flexible innerduct is to the use location; With

D) described catheter installation is being in place cable in vertical innerduct chamber of the flexible innerduct in conduit after the use location.

2. the method for claim 1, wherein described step that flexible innerduct is provided comprises provides the flexible innerduct with more than one vertical innerduct chamber.

3. the method for claim 1, wherein described step that flexible innerduct is provided comprises cable longitudinally is placed in vertical innerduct chamber.

4. the method for claim 1, wherein described step of flexible innerduct that provides comprises that the flexible innerduct that is provided is a textile innerduct.

5. method as claimed in claim 4, wherein, the textile innerduct that is provided comprises warp thread, and the step of described formation conduit and placement flexible innerduct comprises along the described warp thread of the vertical placement of conduit.

6. method as claimed in claim 4, wherein, the textile innerduct that is provided further comprises weft yarn, and described formation conduit comprises along placing described weft yarn with the vertically vertical substantially direction of conduit with the step of placing flexible innerduct.

7. the method for claim 1, wherein, the described step that flexible innerduct is provided comprises provides at least one additional flexibility inner catheter, and described formation conduit and flexible innerduct vertically is placed on step in the conduit comprises additional inner catheter vertically is placed in the conduit with first flexible innerduct.

8. the step of the method for claim 1, wherein described formation conduit and placement flexible innerduct is included in and simultaneously inner catheter is placed in the conduit during conduit forms.

9. method as claimed in claim 8, wherein, the step of described formation conduit and placement flexible innerduct comprises that coextrusion has the conduit of flexible innerduct.

10. the method for claim 1, wherein described formation conduit and flexible innerduct is placed on step in the conduit comprises and longitudinally be positioned over cable in the conduit and be positioned at outside the flexible innerduct.

11. the method for claim 1, wherein the step of described catheter placement comprises and excavates groove on the ground, and the conduit that wherein has flexible innerduct is put into groove and buried conduit with the soil.

12. the method for claim 1, comprise that further the conduit that will wherein have flexible innerduct is placed on bobbin or the spool, and the conduit that transportation wherein has inner catheter is to the use location, and the step of conduit being untied before the step of use location in the catheter installation that will wherein have flexible innerduct.

13. the method for claim 1, wherein, the described step that flexible innerduct is provided is included vertically provides draught line in the catheter lumen, and wherein saidly cable is positioned over step in the flexible innerduct comprises and utilize described draught line tractive cable in described flexible innerduct chamber.

14. the method for claim 1, wherein describedly cable is positioned over step among the flexible innerduct is included in and vertically blows cable in the inner chamber.

15. the method for claim 1, wherein described formation conduit and flexible innerduct is placed on step in the conduit comprises and longitudinally be placed on conduit pull line in the conduit and be positioned at outside the flexible innerduct.

16. method as claimed in claim 15 further is included in catheter installation after the use location, uses conduit pull line in the vertical step of tractive cable within the conduit and outside the flexible innerduct.

17. method as claimed in claim 15 further is included in catheter installation after the use location, uses conduit pull line in the vertical step of another root flexible innerduct of tractive within the conduit and outside the flexible innerduct.