NL2014849A - Method for removing a Cable Core from a Cable Sheath. - Google Patents

Method for removing a Cable Core from a Cable Sheath. Download PDF

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Publication number
NL2014849A
NL2014849A NL2014849A NL2014849A NL2014849A NL 2014849 A NL2014849 A NL 2014849A NL 2014849 A NL2014849 A NL 2014849A NL 2014849 A NL2014849 A NL 2014849A NL 2014849 A NL2014849 A NL 2014849A
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Netherlands
Prior art keywords
cable
core
extraction
introduction
fluid
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NL2014849A
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Dutch (nl)
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NL2014849B1 (en
Inventor
James Eagles Nigel
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James Eagles Nigel
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Application filed by James Eagles Nigel filed Critical James Eagles Nigel
Priority to NL2014849A priority Critical patent/NL2014849B1/en
Priority to PCT/NL2016/050368 priority patent/WO2016190735A1/en
Publication of NL2014849A publication Critical patent/NL2014849A/en
Application granted granted Critical
Publication of NL2014849B1 publication Critical patent/NL2014849B1/en

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    • 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
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1287—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by means of a solvent
    • 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
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling

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  • Electric Cable Installation (AREA)

Abstract

A method for removing a cable core (2) from a cable sheath (1) that includes a cable having a cable sheath (1) and a cable core (2) between an introduction end and an extraction end, in which the cable core (2) includes a core wrapping (3) and a bundle of conductors (4), includes a liquid compound (L) is introduced in the cable at the introduction end (10a), the liquid component (L) being an agent that reacts with the core wrapping (3); holding the liquid compound (L) inside the cable during a predetermined reaction time, in which the core wrapping (3) releases a lubricant; after the reaction time ends, the inside of the cable is flushed with a rehydration liquid (W) introduced at the introduction end (10a) of the cable and the cable core (2) is removed from the cable sheath (1) at the extraction end (10b).

Description

Method for removing a Cable Core from a Cable Sheath
Field of the invention
The present invention relates to a method for removal of a cable core out of a cable sheath. Also, the invention relates to a system for performing such a method.
Background
In recent years, the constant advances in technology, the proliferation on the internet and the constant demand for faster data transfer speeds, lower latency, and greater reliability have forged the requirement for network upgrades. The migration from traditional copper based networks to fiber optical alternatives in telecommunications and data networks left many telecommunication cables based upon a copper core unused. Different approaches are known for removal of these cables or cable cores due to the importance of recycling or fiber upgrade.
When these cables are located in an underground environment a conventional way to remove them would be to dig out the cable, if the purpose is purely for copper recovery, or either dig out and replace with fiber in an upgrade scenario. Since we are speaking of very long conduits of cable this would be a time-consuming and expensive operation.
In the prior art, many methods for removal of a cable core from a cable sheath are known. From methods that just apply pushing and pulling on a cable core to methods that introduce a flow medium and then apply a tensile force. A method for removal of a cable core is known from WO 2011/037445 that discloses a method that comprises an introduction of a flow medium into the cable sheath to reduce friction and pulling at least a fraction of the core out from the sheath. A method for removal of a cable core is known from WO 02/067397 that discloses a method which comprises an introduction of a flowing medium under pressure into the cable to reduce friction and a step of exerting a tension force at the other end of the cable. The medium is only introduced into the space between the sheath and the casing of the cable core. These conditions make it difficult to apply this method over longer lengths of cable. A method for removal of a cable core is known from WO 82/00388 that discloses a method that comprises an introduction of a flow medium into the cable sheath to at least partially dissolve the internal insulation and thereafter apply a force to draw the conductors from the cable.
The object of the present invention is to overcome the disadvantages from the prior art.
Summary of the invention
The object is achieved by a method which comprises an introduction of a rehydration liquid after the dissolution reaction process has been done. The introduction is at the same time or starts a predetermined time before the step of the drawing of the conductors from the cable sheath.
This step has the effect that the dissolved reaction product is rehydrated which improves its lubricating properties. Additionally the introduction of a rehydration liquid allows the reaction product to flow along with the conductors. In such a flow simultaneously with the movement of the conductors, the dissolved and rehydrated reaction product can provide additional lubrication.
As an advantage the method allows to extract longer lengths of the cable at the same time and have the ability to work on wet and damaged cables.
The present invention relates to a method for removing a cable core from a cable sheath comprising a cable having a cable sheath and a cable core between an introduction end and an extraction end, in which the cable core comprises a core wrapping and a bundle of conductors; a liquid compound is introduced in the cable at the introduction end, the liquid component being an agent that reacts with the core wrapping; holding the liquid compound (L) inside the cable during a predetermined reaction time, in which the core wrapping (3) releases a lubricant; after the reaction time ends, the inside of the cable is flushed with a rehydration liquid introduced at the introduction end of the cable and the cable core is removed from the cable sheath at the extraction end.
Advantageously, the method provides an improved extraction of the cable core from the cable sheath. Moreover, the method according to the present invention is applicable to cables buried underground or installed in a ducted environment.
According to an embodiment, the present invention relates to the method as described above, wherein an end cap is placed on the extraction end of the cable before or during the introduction of the liquid compound.
According to an embodiment, the present invention relates to the method as described above, wherein the end cap is only placed when the liquid compound has reached the extraction end of the cable.
According to an embodiment, the present invention relates to the method as described above, wherein the core wrapping consists of paper or a paper compound, or a paper based material.
According to an embodiment, the present invention relates to the method as described above, wherein the wrapping of the conductors consists of paper or a paper compound or a paper based material.
According to an embodiment, the present invention relates to the method as described above, wherein the liquid compound is pumped under pressure into the cable core.
According to an embodiment, the present invention relates to the method as described above, wherein the rehydration liquid is pumped under pressure into the cable core.
According to an embodiment, the present invention relates to the method as described above, wherein the rehydration liquid is an aqueous liquid, preferably water.
According to an embodiment, the present invention relates to the method as described above, wherein the cable core is removed from the cable sheath by exerting a tensile force on the cable core.
According to an embodiment, the present invention relates to the method as described above, wherein the tensile force is exerted on the extraction end of the cable core.
According to an embodiment, the present invention relates to the method as described above, wherein, in principle, the tensile force is exerted in a longitudinal direction of the cable.
According to an embodiment, the present invention relates to the method as described above, wherein the tensile force is initiated prior to the introduction of the rehydration liquid and maintained thereafter during extraction.
According to an embodiment, the present invention relates to the method as described above, wherein the tensile force is initiated simultaneously with the introduction of the rehydration liquid and maintained thereafter during extraction.
According to an embodiment, the present invention relates to the method as described above, wherein the tensile force is initiated after the introduction of the rehydration liquid and maintained thereafter during extraction.
According to an embodiment, the present invention relates to the method as described above, wherein a time delay exists between the introduction of the rehydration liquid and the initiation of the tensile force
The time delay can be selected as minimally about a second.
Moreover, the present invention relates to a system for removing a cable core from a cable sheath according to a method as described above comprising a liquid compound pump for supplying a liquid compound into the cable at an introduction end of the cable, a rehydration liquid source for supplying a rehydration liquid into the cable at the introduction end of the cable and an actuation device for generating a tensile force on the cable core on an extraction end of the cable.
According to an embodiment, the present invention relates to the system as described above, wherein the actuation device comprises a winch.
According to an embodiment, the present invention relates to the system as described above, wherein the rehydration liquid source is pressurized by a pump.
According to an embodiment, the present invention relates to the system as described above, wherein the actuation device comprises a rope, preferably a metal rope, coupled to the cable core at the extraction end of the cable.
According to an embodiment, the present invention relates to the system as described above, wherein the actuation device comprises a roller structure for guiding the rope between the cable core at the extraction end and the winch.
Advantageous embodiments are further defined by the dependent claims.
Brief description of drawings
The invention will be explained in more detail below with reference to drawings in which illustrative embodiments thereof are shown. They are intended exclusively for illustrative purposes and not to restrict the inventive concept, which is defined by the appended claims.
Figure la shows a cross-sectional view of a cable during a first step of a method in accordance with an embodiment of the invention;
Figure lb shows a cable core during a second step of a method in accordance with an embodiment of the invention;
Figure 2 shows a schematic view of a system according to a first step of a method in accordance with an embodiment of the invention;
Figure 3a shows a schematic view of a system according to a second step of a method in accordance with an embodiment of the invention;
Figure 3b shows a schematic view of a system according to a second step of a method in accordance with an embodiment of the invention;
Figure 4 shows a system according to an embodiment of the invention.
Detailed description of embodiments Figure la shows a cross-sectional view of an electrical cable, for example for telecommunication applications. The electrical cable has a first and second end, hereafter respectively referred to as ‘introduction end’ 10a and ‘extraction end’ 10b. The introduction end 10a and the extraction end 10b can be chosen independent of the wrapping direction of the core wrapping 3.
The electrical cable further comprises a cable sheath 1 and a cable core 2. The cable core 2 comprises a core wrapping 3 and a bundle of conductors 4 each one covered by a wrapping 5. The core wrapping 3 is located around the bundle of conductors 4. Typically in telecommunication applications the core wrapping 3 of the cable consists of paper or a paper compound or a paper based material.
The method aims to remove the bundle of conductors 4 from the cable sheath 1. In a first step of a method in accordance with an embodiment of the invention, the interior of the cable is soaked with a liquid compound L. The liquid compound L is introduced at the introduction end 10a into the cable core 2 to react with the core wrapping 3, and optionally with the wrapping of the conductors 5. In this reaction process the liquid compound L reacts with the paper of the core wrapping 3 and forms a paper reaction product 3a. The liquid compound L will only break down the paper very slightly, but release as reaction product one or more (natural) lubricants, such as Lignin and Cellulose from the paper.
According to an embodiment of the invention, the liquid compound is based on an acetate solution in water. The liquid compound may comprise about 80-90 %wt water and about 10-20 %wt acetic acid (concentration about 5 - 10 % in water).
According to an alternative embodiment, the liquid compound is based on an hydroxide solution in water. The liquid compound may comprise about 95-99 %wt water and about 1-5 %wt solid sodium hydroxide.
According to yet a further embodiment, the liquid compound comprises a mixture of acetic acid and sodium hydroxide in water. The liquid compound may comprise about 80-82 %wt water, about 14-18 %wt acetic acid (concentration about 5-10 % in water) and as remainder about 1-4 %wt sodium hydroxide (solid).
Figure lb shows a cable core 2 during a second step of a method in accordance with an embodiment of the invention. In the second step, after a predetermined time chosen normally 0.5-24 h after the first step, a rehydration liquid Wis pumped under pressure into the cable, i.e. between the cable sheath 1 and the bundle of conductors 4 but also in-between the conductors. The introduction of the rehydration liquid Wis essential in that it mixes with the lubricants from the paper out of the reaction step, rehydrates them which enhances the lubrication properties and increases the volume of the lubricants. Besides this the flow of rehydration liquid provides a pressure for at least assisting the extraction of the cable core 2 out of the cable sheath 1. During or after the rehydration liquid Wis introduced, a tensile force F is applied on the extraction end 10b. The rehydration liquid W is typically water-based.
Figure 2 shows a schematic view of a system, for removing the cable core 2 from the cable sheath 1, according to the first step of a method. The system for removal of the cable core 2 comprises a reaction liquid pump 6, an input connector 9 and an end cap 11.
The input connector 9 is arranged to connect the introduction end 10a, via a conduit 8, to the reaction liquid pump 6.
Once the input connector 9 has been attached to the cable, and the reaction liquid pump 6 has been connected to the input connector 9 the liquid compound L enters into and around the cable core 2. The end cap 11 is arranged to hinder outflow of the liquid compound L, and to enable the monitoring of the fluid level, ensuring saturation of the cable core whilst minimizing fluid spillage at the extraction end 10b. The end cap 11 can be attached on the cable prior to pumping commences, or it can be attached during pumping.
Then the liquid compound L is pumped under pressure into the cable core 2 over substantially the length between the introduction 10a end and extraction end 10b, soaking the core wrapping 3 and the interior space in the bundle of conductors 4. Optionally, when the wrapping of the conductors 5 consist of a paper or a paper compound, the liquid compound L will soak this wrapping of the conductors 5 as well.
According to an embodiment, the reaction liquid pump 6 operates continuous until the cable core 2 is at least partly submerged.
According to an embodiment of the invention, the reaction liquid pump 6 is arranged with a heating system 17 for heating of the liquid compound L before entering the cable core 2.
The reaction process now commences whereby the paper wrapping around the cable core 2 if left exposed to the liquid compound L for a predetermined time, for example between 0.5-24 h, releases a reaction product comprising (natural) lubricants. After the reaction process, the end cap 11 is removed, the liquid compound L is optionally removed. Next, the extraction step commences.
Figure 3a shows the system of fig 2 during a next step of the extraction process. In this next step, at the introduction end 10a, a rehydration liquid W typically a aqueous liquid is flushed under pressure into the cable core 2. At substantially the same time, at the extraction end 10b of the cable, a tensile force F is applied on the cable core 2 to extract the cable core 2 from the cable sheath 1. An extraction clamp 12 is attached to the cable core 2 at the extraction end 10b, while a rehydration liquid source 7 is connected with the input connector 9. The extraction force F is applied in a longitudinal direction at the extraction end 10b of the cable core 2, at a same time as or shortly after the flushing process starts at the other end.
The flushing provides that the lubricants that were released during the reaction of the liquid compound with the paper wrapping are rehydrated so as to increase the lubricating properties of these lubricants. Additionally, the pressurized flow of the rehydration fluid assists the extraction process by transporting the natural lubricants towards the extraction end 10b while the cable core 2 moves in the same direction inside the cable sheath 1.
According to an embodiment of the invention, the rehydration liquid source 7 comprises a heating system 18 for heating of the rehydration liquid W before it enters the cable core 2.
Figure 3b shows the system of figure 2 during an extraction step. According to an embodiment there is a time delay provided between the start of rehydration liquid W flushing at one end, and the actuation of the tensile force F being applied at the extraction end 10b.
The purpose of the time delay is to be able to start flushing rehydration liquid W before the tensile force F is applied. The time delay has the effect that the lubricants from the reaction process are enhanced in terms of both volume and lubrication capabilities. This time delay can be selected from about 1 s to 60 s or more.
Figure 4 shows a system according to an embodiment of the invention, wherein the cable is located in an underground environment. In practical situations, the cable is usually buried below a surface layer, such as a brick or asphalt pavement, or soft verge.
Removal of the cable is adversely affected by the need to open the surface layer. According to an embodiment of the invention, the removal is facilitated by the formation of two cavities 13 to expose the cable, this cavity can for example be a pit or manhole, and in both cavities 13 the cable is cut to reveal the cable core 2. Above ground the reaction liquid pump 6 is provided at one end to provide liquid compound L for the reaction process. For the extraction process a water source 7 to provide rehydration liquid W and a pulling system 14 is installed.
On the introduction end 10a of the cable the input connector 9 is installed and connected with the pump 6, via a conduit 8. In the reaction step the liquid compound L is pumped under pressure into the cable core 2, until the cable core 2 is fully soaked.
The end cap 11 is usually attached to the cable at the same time as the input connector 9 is attached, or during the entry of the liquid compound L into the cable before the compound has reached the extraction end 10b.
According to an embodiment, the cable core 2 is left in this state for a predetermined time, minimally equal to the time for soaking the cable core or for example between about 0.5 h and about 24 h, after which the end cap 11 is removed and the extraction process commences. The predetermined time delay can be selected based on various practical circumstances, such as the cable type, amount or type of paper wrapping, cable length.
The extraction step starts by connecting the cable core 2 with an extraction clamp 12 at the extraction end 10b. A rehydration liquid source 7 supplies rehydration liquid Wthrough the input connector 9 into the cable at the introduction end 10a. Here the rehydration liquid IF is introduced into the cable core 2 to flush the inside of the cable. At the same time, or after a time delay, an extraction force F is applied in a longitudinal direction on the cable core 2. The extraction force F forces the cable core 2 out of the cable sheath 1, whilst leaving the cable sheath 1 in place. Once the cable core 2 is partially out of the cable sheath 1 the direction of the extraction force F is shifted, to extract the cable core 2 out of the cavity 13.
According to an embodiment, the actuation device that generates the tensile force to pull the cable, comprises a winch 14. A preferably metal rope 16 is coupled to the winch and to the extraction end 10b of the cable. Optionally the metal rope 16 is guided over rollers 15 between the winch 14 and the extraction end 10b.
Other alternatives and equivalent embodiments of the present invention are conceivable within the idea of the invention, as will be clear to the person skilled in the art. The scope of the invention is limited only by the appended claims.

Claims (23)

1. Werkwijze om een kabelkern (2) te verwijderen uit een kabelmantel (1) omvattende een kabel met een kabelmantel (1) en een kabelkern (2) tussen een introductie-einde (10a) en een extractie-einde (10b), waarin de kabelkern (2) een kemomhulsel (3) en geleiders (4) omvat, met het kenmerk, dat een reactievloei stof (L) in de kabel wordt ingebracht aan het introductie-einde (10a) die reageert met het kemomhulsel (3); het houden van de reactievl oei stof (L) in de kabel gedurende een voorafbepaalde reactietijd, waarbij het kemomhulsel (3) een smeermiddel afgeeft; na de reactietijd geëindigd is, wordt het binnenste van de kabel gespoeld met een rehydratievloeistof (W) die wordt ingebracht aan het introductie-einde (10a) van de kabel en de kabelkern (2) uit de mantel (1) wordt gehaald aan het extractie-einde (10b).A method of removing a cable core (2) from a cable sheath (1) comprising a cable with a cable sheath (1) and a cable core (2) between an introduction end (10a) and an extraction end (10b), wherein the cable core (2) comprises a core sleeve (3) and conductors (4), characterized in that a reaction liquid (L) is introduced into the cable at the introduction end (10a) which reacts with the core sleeve (3); keeping the reaction liquid (L) in the cable for a predetermined reaction time, the core sleeve (3) releasing a lubricant; after the reaction time has ended, the interior of the cable is rinsed with a rehydration fluid (W) that is introduced at the cable introduction end (10a) and the cable core (2) is removed from the sheath (1) to the extraction end (10b). 2. Werkwijze volgens conclusie 1, waarbij een end cap (11) wordt geplaatst aan het extractie-einde (10b) van de kabel voorafgaand aan of tijdens het inbrengen van de reactievl oei stof (L).A method according to claim 1, wherein an end cap (11) is placed at the extraction end (10b) of the cable prior to or during the introduction of the reaction liquid (L). 3. Werkwijze volgens conclusie 2, waarbij de end cap (11) pas wordt geplaatst als de reactievl oei stof (L) het extractie-einde (10b) van de kabel heeft bereikt.Method according to claim 2, wherein the end cap (11) is only placed when the reaction liquid (L) has reached the extraction end (10b) of the cable. 4. Werkwijze volgens één van de voorgaande conclusies, omvattend het verwarmen van de reactievloeistof (L) voorafgaand aan het inbrengen van de reactie vloei stof in de kabel.The method of any one of the preceding claims, comprising heating the reaction fluid (L) prior to introducing the reaction fluid into the cable. 5. Werkwijze volgens een van de voorgaande conclusies, waarbij het kemomhulsel (3) gemaakt is van een papier bevattend materiaal of op papier gebaseerd materiaal.Method according to one of the preceding claims, wherein the core casing (3) is made of a paper-containing material or paper-based material. 6. Werkwijze volgens een van de voorgaande conclusies, waarbij het omhulsel van de geleiders (5) gemaakt is van een papier bevattend materiaal of op papier gebaseerd materiaal.A method according to any one of the preceding claims, wherein the casing of the guides (5) is made of a paper-containing material or paper-based material. 7. Werkwijze volgens een van de voorgaande conclusies, waarbij de reactievloeistof (L) onder druk wordt gepompt in de kabelkern (2).Method according to one of the preceding claims, wherein the reaction fluid (L) is pumped under pressure into the cable core (2). 8. Werkwijze volgens een van de voorgaande conclusies, waarbij de rehydratievloeistof (W) een waterachtige vloeistof is, bij voorkeur water.The method according to any of the preceding claims, wherein the rehydration fluid (W) is an aqueous fluid, preferably water. 9. Werkwijze volgens een van de voorgaande conclusies, waarbij de kabelkern (2) uit de mantel (1) wordt gehaald door een trekkracht (F) uit te oefenen op de kern (2).A method according to any one of the preceding claims, wherein the cable core (2) is removed from the sheath (1) by exerting a tensile force (F) on the core (2). 10. Werkwijze volgens conclusie 9, waarbij deze trekkracht (F) wordt uitgeoefend aan een extractie einde (10b) van de kern (2).The method of claim 9, wherein said tensile force (F) is applied to an extraction end (10b) of the core (2). 11. Werkwijze volgens conclusie 9 of conclusie 10, waarbij de trekkracht (F) longitudinaal ten opzichte van de kabel wordt uitgeoefend.A method according to claim 9 or claim 10, wherein the tensile force (F) is exerted longitudinally with respect to the cable. 12. Werkwijze volgens een van de conclusies 9-11, waarbij de trekkracht (F) voorafgaand aan het inbrengen van de rehydratievloeistof (W) in de kabel wordt geïnitieerd en daarna onderhouden gedurende extractie.A method according to any of claims 9-11, wherein the tensile force (F) is initiated prior to the introduction of the rehydration fluid (W) into the cable and then maintained during extraction. 13. Werkwijze volgens een van de conclusies 9-11, waarbij de trekkracht (F) gelijktijdig met het inbrengen van de rehydratievloeistof (W) in de kabel wordt geïnitieerd en daarna onderhouden gedurende extractie.A method according to any of claims 9-11, wherein the tensile force (F) is initiated simultaneously with the introduction of the rehydration fluid (W) into the cable and then maintained during extraction. 14. Werkwijze volgens een van de conclusies 9-11, waarbij de trekkracht (F) na het inbrengen van de rehydratievloeistof (W) in de kabel wordt geïnitieerd en daarna onderhouden gedurende extractie.A method according to any one of claims 9-11, wherein the tensile force (F) after the rehydration fluid (W) is introduced into the cable and then maintained during extraction. 15. Werkwijze volgens conclusie 12 of conclusie 14 waarbij er een tijdsverschil is tussen het inbrengen van de rehydratievloeistof (W) en de initiatie van de trekkracht (F).The method of claim 12 or claim 14 wherein there is a time difference between the introduction of the rehydration fluid (W) and the initiation of the tensile force (F). 16. Werkwijze volgens conclusie 15 waarbij het tijdsverschil minstens 1 seconde of minstens 1 minuut bedraagt.The method of claim 15, wherein the time difference is at least 1 second or at least 1 minute. 17. Werkwijze volgens één van de voorgaande conclusies, waarbij de reactievloeistof (L) een oplossing van acetaat in water omvat.The method of any one of the preceding claims, wherein the reaction liquid (L) comprises an aqueous acetate solution. 18. Gebruik van een oplossing van een acetaat in water als reactievloeistof (L) bij een werkwijze volgens één van de voorgaande conclusies 1-17.Use of an aqueous acetate solution as reaction liquid (L) in a process according to any of the preceding claims 1-17. 19. Systeem om een kabelkern (2) te verwijderen uit een kabelmantel (1) volgens een van de voorafgaande conclusies, waarbij het systeem het volgende omvat: - een reactievloeistofpomp (6) voor aanvoer van een reactievloeistof (L) in de kabel aan het introductie-einde (10a); - een rehydratievloeistofbron (7) voor aanvoer van een rehydratievloeistof (W) in de kabel aan het introductie-einde (10a); - een aandrijfinrichting om een trekkracht (F) op te wekken op de kabelkern (2) aan een extractie-einde (10b) van de kabel.A system for removing a cable core (2) from a cable sheath (1) according to any of the preceding claims, wherein the system comprises: - a reaction fluid pump (6) for supplying a reaction fluid (L) in the cable to the introduction end (10a); - a rehydration fluid source (7) for supplying a rehydration fluid (W) into the cable at the introduction end (10a); - a drive device for generating a pulling force (F) on the cable core (2) at an extraction end (10b) of the cable. 20. Systeem volgens conclusie 19, waarbij de aandrijfinrichting een winch (14) omvat.The system of claim 19, wherein the drive device comprises a winch (14). 21. Systeem volgens een van de conclusies 19-20, waarbij de aandrijfinrichting een touw (16) omvat, bij voorkeur een metalen touw, gekoppeld aan de kabelkern (2) aan het extractie-einde (10b) van de kabel.A system according to any of claims 19-20, wherein the drive device comprises a rope (16), preferably a metal rope, coupled to the cable core (2) at the extraction end (10b) of the cable. 22. Systeem volgens conclusie 19, waarbij de aandrijfinrichting een rolconstructie (15) omvat voor het begeleiden van het touw (16) tussen de kabelkern (2) aan het extractie-einde (10b) en de winch (14).The system of claim 19, wherein the drive device comprises a roller structure (15) for guiding the rope (16) between the cable core (2) at the extraction end (10b) and the winch (14). 23. Systeem volgens één van de conclusies 19-21, waarbij de reactievloeistofpomp (6) is voorzien van een verwarmingselement (17) voor het voorverwarmen van de reactievl oei stof (L).The system of any one of claims 19 to 21, wherein the reaction liquid pump (6) is provided with a heating element (17) for preheating the reaction liquid (L).
NL2014849A 2015-05-22 2015-05-22 Method for removing a Cable Core from a Cable Sheath. NL2014849B1 (en)

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NL2014849A NL2014849B1 (en) 2015-05-22 2015-05-22 Method for removing a Cable Core from a Cable Sheath.
PCT/NL2016/050368 WO2016190735A1 (en) 2015-05-22 2016-05-23 Method for removing a cable core from a cable sheath

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NL2014849A NL2014849B1 (en) 2015-05-22 2015-05-22 Method for removing a Cable Core from a Cable Sheath.

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NL2014849B1 NL2014849B1 (en) 2017-01-31

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NL2027051B1 (en) * 2020-12-04 2022-07-07 Cxt Invest B V Apparatus and method for ejecting a core from a cable, in particular a coaxial cable

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GB736749A (en) * 1953-09-04 1955-09-14 British Insulated Callenders Improvements relating to the recovery of copper and lead from electricity supply cables laid in the ground
WO1982000388A1 (en) * 1980-07-14 1982-02-04 E Edvardsen Method of converting a cable in the ground into a closed guiding track for insertion of new conductors
WO2002067397A1 (en) * 2001-02-20 2002-08-29 Alois Pichler Method for removing a cable core from a cable sheath
WO2011037445A1 (en) * 2009-09-28 2011-03-31 Inno-X Sdn Bhd A method of extracting a cable from a sheath

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