WO2002039560A1 - Produit tubulaire allonge, notamment du type conduit d'installation - Google Patents
Produit tubulaire allonge, notamment du type conduit d'installation Download PDFInfo
- Publication number
- WO2002039560A1 WO2002039560A1 PCT/FR2001/003440 FR0103440W WO0239560A1 WO 2002039560 A1 WO2002039560 A1 WO 2002039560A1 FR 0103440 W FR0103440 W FR 0103440W WO 0239560 A1 WO0239560 A1 WO 0239560A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricating
- tubular product
- solid
- product according
- phase
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
Definitions
- the present invention relates to an elongated tubular product, generally having the same section along its entire longitudinal direction, and comprising a solid tube, consisting of at least one plastic, both flexible enough to be wound and unrolled, and sufficiently rigid to resist by itself a centripetal or centrifugal radial force.
- the present invention intends to group under the same concept, for example both an installation conduit, of at least one cable or a pipe, then contained in said installation conduit, that a sheath of protection of at least one cable, for example electrical.
- the present invention intends to cover any conduit generally ensuring the transfer or the transport of a flow, whether it is a fluid (water or gas by example), energy (electricity for example), or information or signals (video transmission by optical cable for example), or data in the form of electrical, analog, digital signals, etc.
- a fluid water or gas by example
- energy electricity for example
- information or signals video transmission by optical cable for example
- data data in the form of electrical, analog, digital signals, etc.
- an elongated tubular product has been described and proposed, having the same section along its entire longitudinal direction, comprising a solid tube constituted by at less a plastic, both flexible enough to be wound and unwound, and rigid enough to withstand a centripetal or centrifugal radial force, said solid tube comprising, on the inner side and / or on the outer side, a surface layer whose surface free constitutes a friction surface and comprising a plastic matrix in which are distributed or dispersed, on the one hand a lubricating particulate solid phase, flush at least partly at the level of the free surface of the surface layer, and on the other hand a lubricating liquid phase, compatible with the plastic matrix.
- the present invention relates to an elongated tubular product, with permanent lubrication of the friction surface or surfaces of the solid tube, reducing friction even more significantly.
- a composite solid lubricating particulate phase comprising, on the one hand a carbon black, and on the other hand a lubricating plastic material whose coefficient of friction with respect to itself is at most equal to 0.1.
- carbon black is meant any amorphous form of the carbon element, in the pulverulent state, capable of being obtained for example by combustion of a hydrocarbon with a stoichiometric oxygen defect.
- the lubricating solid phase is either in the form of composite particles constituted individually by a mixture of at least the lubricating plastic material and carbon black, or in the form of a mixture of particles respectively of carbon black and lubricating plastic material, said particles, in both cases, being distributed homogeneously in the surface layer and flush with the free surface of the latter.
- the present invention preferably:
- the lubricating plastic material is polytetrafluoroethylene (PTFE);
- - And / or the carbon black of the lubricating solid phase is in particulate form and distributed in the plastic matrix of the surface layer of the solid tube;
- - And / or the lubricating plastic material is in particulate form and distributed in the plastic matrix of the surface layer of the solid tube.
- a surface layer as defined above incorporating a solid lubricating phase, which comprises powdered carbon black, which can be, if necessary, the same as or different of, for example by the size of the particles, carbon black dispersed and incorporated as a filler by the rest of the plastic of said tube.
- the carbon black particles have a diameter at most equal to 500 nm, and preferably between 10 nm and 100 nm.
- the lubricating plastic material is a polytetrafluoroethylene (PTFE).
- PTFE polytetrafluoroethylene
- the proportion by weight of carbon black of the solid lubricating phase relative to PTFE is at least 10%, preferably between 20 and 40%, and for example between 10 and 30%.
- an elongated tubular product consisting of an installation duct made of high density polyethylene (HDPE), all other things being equal: - while the coefficient of friction , at the level of the internal free surface of said conduit, is 0.09, with a liquid lubricating phase consisting of a silicone oil having a viscosity of 100 centistokes, and whose surface density is 2.10 "4 g / cm 2 , and with a solid lubricating phase consisting solely of PTFE particles having a particle size of 3 ⁇ m at 40 ⁇ m, in proportion to 10% by weight of the HDPE of the installation conduit;
- HDPE high density polyethylene
- an installation duct is somehow universal, in the sense that it is compatible, without further modification, with all current installation techniques, whether these are pulling techniques, for example with a cable, or blowing techniques, for example with a ferret, or by blowing-pushing.
- the lubricant system according to the invention makes it possible to eliminate, at least in part, the static charges generated by the friction between the conduit and the cable, during the installation of the latter. .
- the particles of the lubricating plastic material are microbeads having a diameter at most equal to 20 ⁇ m, and preferably between 1 and 15 ⁇ m;
- the liquid lubricating phase is preferably but not exclusively a silicone; it has a viscosity at most equal to 1000 centistokes, at room temperature, and for example between 10 and 1000 centistocks; - in the case where the lubricating liquid phase slightly wets the free surface of the surface layer, the thickness of the film of lubricating liquid phase on said free surface does not exceed 1 ⁇ m;
- the solid lubricating phase constitutes a charge distributed as appropriate, when for example the tube is constituted by the single plastic matrix, or in the whole plastic matrix, or only in the boundary layer, external or internal, constituting the surface layer;
- the liquid lubricating phase is dispersed in, or impregnates as appropriate, for example when the tube consists of the single plastic matrix, or the entire plastic matrix, or only the boundary layer, external or internal, constituting the surface layer;
- the surface layer is irregular following the periphery of the solid tube, and corresponds for example to longitudinal ribs or grooves; but this same surface layer can be continuous, following the periphery of the solid tube.
- the solid tube which is constituted by the single plastic matrix, and therefore by the plastic material such as HDPE, of which a boundary layer, interior or exterior, constitutes the aforementioned surface layer, and in which, on the one hand, particles of the composite solid lubricating phase are distributed, partially flush with at least one free surface, interior or exterior , and constituting a dry friction surface, and on the other hand is diffused the liquid lubricating phase, at least partly in the surface layer, practically without wetting, neither the external surface nor the internal surface of this same matrix.
- the lubricating solid phase constitutes a filler, the weight proportion of which is at least equal to 0.01% of the plastic material, in particular between 0.005% by weight and 0.05% by weight of this same plastic material solid tube.
- the matrix comprises, in the diffused or impregnated state, a lubricating liquid phase, its proportion being at least equal to 0.05% by weight of the plastic material, and in particular between 0.02% by weight and 0.2% by weight of the plastic material of the solid tube.
- the weight proportion of the solid lubricating phase / liquid lubricating phase is at most equal to 5%.
- the particles of the lubricating solid phase and / or the dispersed lubricating liquid phase are contained only in the surface layer of the solid tube.
- the proportion by weight of carbon black of the lubricating solid phase, relative to the lubricating plastic material, PTFE for example, is at least 10%, and preferably between 20 and 40%;
- the carbon black particles of the lubricating solid phase have a diameter at most equal to 500 nm, and preferably between 10 nm and 100 nm.
- FIG. 1 shows schematically, and by way of example, in axial section an installation duct according to the invention
- FIG. 2 shows in axial section a cable protection sheath according to the invention
- FIG. 3 shows in cross section an installation conduit according to the invention, but according to another embodiment of the latter;
- FIG. 4 schematically shows the device used to measure the coefficient of friction of the interior free surface of an installation duct according to the present invention.
- an installation duct is constituted by a solid or rigid tube 1, made of charged plastic material (high density polyethylene), both flexible enough to be rolled up and unwound, and rigid enough to resist itself to a centripetal or centrifugal radial force.
- This solid tube has a dry friction surface, corresponding to its internal surface 2.
- a surface layer 3 can be distinguished at least, the free surface of which constitutes the dry friction surface (internal surface 2).
- This surface layer comprises a plastic matrix, corresponding to that of the solid tube.
- particles 4 of lubricating solid phase are distributed which are partially flush with the free surface 2.
- a liquid lubricating phase for example silicone oil, permeates and is distributed in this surface layer.
- the liquid lubricating phase is a silicone oil having a viscosity of 100 centistokes, impregnating the plastic matrix (HDPE), with a surface density of 1.8.10 "4 g: cm 2 ;
- the solid lubricating phase comprises in particulate form, namely respectively a PTFE having a particle size between 5 and 15 ⁇ m, in proportion to 10% by weight of HDPE, and a carbon black in the pulverulent state, having a particle size of 80 nm, in a proportion of 0.1% by weight of HDPE.
- the surface layer 3 is obtained by spraying or diffusing inside the tube 1, after extrusion but in the visco-elastic phase, HDPE and carbon black, in particulate form, as well as silicone oil.
- the lubricating phases, solid and liquid are incorporated into the plastic matrix of the tube, at least on the surface, to form the surface layer 3 which has been discussed above.
- HDPE high density polyethylene
- NOVOLUB commercial reference from the French company NOVOPLASTIC having an internal diameter of 40 mm and a thickness of 3.5 mm, is extruded on a machine from the BATTENFELD company.
- a suspension of a polytetrafluoroethylene (PTFE) powder (commercial reference UNILUB T3 from the company UNIFLON), and on the other hand, powdered carbon black (reference Monarch 120 from Cabot Corporation), as well as a silicone oil (commercial reference 47V100 from PENN-WHITE), are sprayed in divided form inside the extruded tube, while it is still viscoelastic.
- PTFE polytetrafluoroethylene
- the installation duct is wound around a reel having a diameter of one meter.
- a cable is installed inside the conduit; one end of the cable is attached to the weight of value FO, and the other is connected to a traction device which records the pulling force F, as a function of the displacement of said weight.
- the drawing speed is 1 m / min, at a temperature of 21 ° C.
- the pulling force F is measured, for a displacement of the weight of 15 cm.
- An installation duct as previously described has a coefficient of friction between 0.01 and 0.02.
- the latter comprises three concentric layers 6, 7 and 8, optionally constituted by respectively different plastics, one exterior 7, the other inner 6, in which the surface layer 3 is integrated, and the other median or intermediate 8.
- the surface layer 3 is discontinuous, following the periphery of the solid tube 1, and includes, for example, ribs 9 adjacent and longitudinal.
- this same surface layer 3 can be continuous, following the periphery of the solid tube 1.
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01993965A EP1336232A1 (fr) | 2000-11-07 | 2001-11-06 | Produit tubulaire allonge, notamment du type conduit d'installation |
AU2002223764A AU2002223764A1 (en) | 2000-11-07 | 2001-11-06 | Elongated tubular product, such as in particular an installation duct |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/14275 | 2000-11-07 | ||
FR0014275A FR2816388B1 (fr) | 2000-11-07 | 2000-11-07 | Produit tubulaire allonge, notamment du type conduit d'installation |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002039560A1 true WO2002039560A1 (fr) | 2002-05-16 |
Family
ID=8856159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/003440 WO2002039560A1 (fr) | 2000-11-07 | 2001-11-06 | Produit tubulaire allonge, notamment du type conduit d'installation |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1336232A1 (fr) |
AU (1) | AU2002223764A1 (fr) |
FR (1) | FR2816388B1 (fr) |
WO (1) | WO2002039560A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2857461A1 (fr) * | 2003-07-08 | 2005-01-14 | Acome Soc Coop Production | Materiau a faible coefficient de frottement et produit tubulaire allonge le comprenant |
US7491889B2 (en) | 2006-03-15 | 2009-02-17 | Nexans | Electrical line |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6331260B2 (ja) * | 2013-04-25 | 2018-05-30 | 住友電気工業株式会社 | 光ファイバケーブル |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454405A2 (fr) * | 1990-04-24 | 1991-10-30 | BICC Public Limited Company | Conduit pour recevoir un membre fibre-optique |
US5238328A (en) * | 1992-01-23 | 1993-08-24 | Adams Robert M | System for coextruded innerduct with filled outer layer |
WO1998042052A1 (fr) * | 1997-03-14 | 1998-09-24 | Novoplastic | Produit tubulaire allonge, notamment du type conduit d'installation |
-
2000
- 2000-11-07 FR FR0014275A patent/FR2816388B1/fr not_active Expired - Fee Related
-
2001
- 2001-11-06 AU AU2002223764A patent/AU2002223764A1/en not_active Abandoned
- 2001-11-06 EP EP01993965A patent/EP1336232A1/fr not_active Withdrawn
- 2001-11-06 WO PCT/FR2001/003440 patent/WO2002039560A1/fr not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454405A2 (fr) * | 1990-04-24 | 1991-10-30 | BICC Public Limited Company | Conduit pour recevoir un membre fibre-optique |
US5238328A (en) * | 1992-01-23 | 1993-08-24 | Adams Robert M | System for coextruded innerduct with filled outer layer |
WO1998042052A1 (fr) * | 1997-03-14 | 1998-09-24 | Novoplastic | Produit tubulaire allonge, notamment du type conduit d'installation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2857461A1 (fr) * | 2003-07-08 | 2005-01-14 | Acome Soc Coop Production | Materiau a faible coefficient de frottement et produit tubulaire allonge le comprenant |
US7491889B2 (en) | 2006-03-15 | 2009-02-17 | Nexans | Electrical line |
US8206777B2 (en) | 2006-03-15 | 2012-06-26 | Nexans | Electrical line |
Also Published As
Publication number | Publication date |
---|---|
FR2816388B1 (fr) | 2003-01-24 |
FR2816388A1 (fr) | 2002-05-10 |
EP1336232A1 (fr) | 2003-08-20 |
AU2002223764A1 (en) | 2002-05-21 |
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