EP0450271B1 - Armour jointing method - Google Patents
Armour jointing method Download PDFInfo
- Publication number
- EP0450271B1 EP0450271B1 EP91100886A EP91100886A EP0450271B1 EP 0450271 B1 EP0450271 B1 EP 0450271B1 EP 91100886 A EP91100886 A EP 91100886A EP 91100886 A EP91100886 A EP 91100886A EP 0450271 B1 EP0450271 B1 EP 0450271B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- elements
- armour
- cable
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0503—Connection between two cable ends
Definitions
- the present invention relates to a method for replacing the armour over a cable joint.
- the process includes the steps of making a number of pretwisted armour elements, placing the elements over the joint and clamping, welding or soldering the ends of the elements to the cable armour on both sides of the joint.
- Such a method is known (EP-B-0 046 544).
- the armour elements required to make up the armour over a cable joint are usually made one by one by winding an armour wire over a mandrel. Difficulties are experienced in obtaining the correct diameter and length of lay. Furthermore, the process takes relatively long time. When making repairs on submarine cables the jointing process must take as short time as possible, and the main object of the invention is to improve this process.
- Figure 1 a cable armouring line 1 having an wire armouring machine 2, the details of which are not shown.
- a cable 3 has just been passed through the machine so that its left end is about to leave the machine to the right in the drawing.
- the machine may provide single or double layer armour on the cable core.
- a pipe or tube 4 of desired length and diameter is inserted into the machine 2 at its left side.
- the elements In order to obtain a number of spiralled armour elements having the correct diameter and lay length, the elements must be wound onto a tube having a smaller diameter than that at which they were wound onto the cable core. If, as an example, the diameter of a cable core is 100 mm, the tube could have a diameter of 80 mm. If an armour layer of a cable has 32 wires, it would be practical to wind 16 wires onto a tube which is twice as long as the joint, and cut the wires to size afterwards. If the length of the joint is 5 m, the length of the tube should be 10 m.
- the tube-supported elements must be bonded, taped or otherwise fastened to the tube at both ends, to prevent the elements from unwinding and loosening.
- the tube may be cut into a number of required sections and both ends of the elements must be secured on the tubes.
- the tube with the tube-supported elements may be worked, i. e. it may be bent back and forth a number of times to take the unspiralling tendency out of the elements.
- the spiralled armouring elements of the present invention may be wound or inserted over a power cable joint in a predetermined number, one by one, after the cable core joint has been completed, but this is not considered to give the best results. In some cases it will be necessary to do it this way.
- the wire elements which are wound onto the smaller diameter pipe or tube 4 should, preferably, and in accordance with the invention be transferred to a tube section 10, ( Figures 2 and 3) having a larger diameter than the cable core and even larger than the diameter of the armoured cable.
- the number of spiralled wires transferred to the tube 10 in this intermediate step should correspond to the number of wires in the cable armour.
- the tube-10-supported wire element section can then be stored until its use is required.
- the tube 10 should be made of a (plastic) material strong enough to withstand the radial tension of the spiralled wire elements.
- the tube section 10 itself, with spiralled armour elements 11, can then be pushed over one of the cable ends before completing the cable core joint, so that after completion of the joint, the tube-supported elements can be pushed back to cover the joint.
- One side of the elements can then be welded to the armour elements of one of the cable ends.
- the tube 11 can then be withdrawn from the elements 12 before welding or otherwise securing the other side of the elements to the ends of the armour of the other cable end.
- the surface of the tube should preferably be lubricated to facilitate withdrawal of the tube from between the cable core and the armour elements.
- the two parts may be interconnected so that the tube can be handled as one unit, but the interconnection should not be stronger than allowing one part to be torn away from the other part in the axial direction.
- FIG. 5 is schematically illustrated a power cable joint 20, showing two cable ends 21 and 22, each having a conductor 23, 24, coned insulation 25, 26 and armour layers 27, 28.
- an armour tube 10 or 13 which is to be pulled over the joint to complete the armour layer when the cable conductors have been jointed and the insulation replaced.
- FIG 6 is illustrated how a tube 13 with armour wires 16 is placed over the joint.
- the short part 15 of the tube has been separated from the long part 14 and pulled to the right so as to allow the armour element ends 30 to be joined or secured to the cable armour wires 28.
- the long tube 14 is pulled to the left as shown in Figure 8 so that the left hand end 31 of the armour elements can be joined or secured to the cable armour wires 27.
- the tubes 14 and 15 can be removed from the cable or they can be left on the cable joint as protection.
Description
- The present invention relates to a method for replacing the armour over a cable joint. The process includes the steps of making a number of pretwisted armour elements, placing the elements over the joint and clamping, welding or soldering the ends of the elements to the cable armour on both sides of the joint. Such a method is known (EP-B-0 046 544).
- The armour elements required to make up the armour over a cable joint, such as a submarine power cable joint, are usually made one by one by winding an armour wire over a mandrel. Difficulties are experienced in obtaining the correct diameter and length of lay. Furthermore, the process takes relatively long time. When making repairs on submarine cables the jointing process must take as short time as possible, and the main object of the invention is to improve this process.
- The main features of the invention are defined in the claims. By using the invention there is obtained a reliable process which requires relatively short time.
- Above mentioned and other features and objects of the present invention will clearly appear from the following detailed description of embodiments of the invention taken in conjunction with the drawings, where
- Figure 1 schematically illustrates an armouring line for cables,
- Figures 2 - 4 shows two alternative tube-supported element sections, and
- Figures 5 - 8 illustrate four steps during the process of replacing the armouring elements over a cable joint in accordance with the invention.
- In Figure 1 is illustrated a cable armouring line 1 having an
wire armouring machine 2, the details of which are not shown. A cable 3 has just been passed through the machine so that its left end is about to leave the machine to the right in the drawing. The machine may provide single or double layer armour on the cable core. A pipe ortube 4 of desired length and diameter is inserted into themachine 2 at its left side. - In order to obtain a number of spiralled armour elements having the correct diameter and lay length, the elements must be wound onto a tube having a smaller diameter than that at which they were wound onto the cable core. If, as an example, the diameter of a cable core is 100 mm, the tube could have a diameter of 80 mm. If an armour layer of a cable has 32 wires, it would be practical to wind 16 wires onto a tube which is twice as long as the joint, and cut the wires to size afterwards. If the length of the joint is 5 m, the length of the tube should be 10 m. The tube-supported elements must be bonded, taped or otherwise fastened to the tube at both ends, to prevent the elements from unwinding and loosening. The tube may be cut into a number of required sections and both ends of the elements must be secured on the tubes. The tube with the tube-supported elements may be worked, i. e. it may be bent back and forth a number of times to take the unspiralling tendency out of the elements.
- The spiralled armouring elements of the present invention may be wound or inserted over a power cable joint in a predetermined number, one by one, after the cable core joint has been completed, but this is not considered to give the best results. In some cases it will be necessary to do it this way.
- The wire elements which are wound onto the smaller diameter pipe or
tube 4 should, preferably, and in accordance with the invention be transferred to atube section 10, (Figures 2 and 3) having a larger diameter than the cable core and even larger than the diameter of the armoured cable. The number of spiralled wires transferred to thetube 10 in this intermediate step should correspond to the number of wires in the cable armour. The tube-10-supported wire element section can then be stored until its use is required. Thetube 10 should be made of a (plastic) material strong enough to withstand the radial tension of the spiralled wire elements. - The
tube section 10 itself, withspiralled armour elements 11, can then be pushed over one of the cable ends before completing the cable core joint, so that after completion of the joint, the tube-supported elements can be pushed back to cover the joint. One side of the elements can then be welded to the armour elements of one of the cable ends. Thetube 11 can then be withdrawn from theelements 12 before welding or otherwise securing the other side of the elements to the ends of the armour of the other cable end. The surface of the tube should preferably be lubricated to facilitate withdrawal of the tube from between the cable core and the armour elements. - An alternative to using one piece of
tube 11 for a set ofelements 12 as illustrated in Figures 2 and 3, is to use alarge diameter tube 13 consisting of two parts, e.g. onelong part 14 and oneshort part 15, as illustrated in Figure 4, and having a correct number ofarmour elements 16. The two parts may be interconnected so that the tube can be handled as one unit, but the interconnection should not be stronger than allowing one part to be torn away from the other part in the axial direction. - In Figure 5 is schematically illustrated a power cable joint 20, showing two
cable ends conductor insulation armour layers armour tube - In Figure 6 is illustrated how a
tube 13 witharmour wires 16 is placed over the joint. In Figure 7 theshort part 15 of the tube has been separated from thelong part 14 and pulled to the right so as to allow the armour element ends 30 to be joined or secured to thecable armour wires 28. Thereafter thelong tube 14 is pulled to the left as shown in Figure 8 so that the left hand end 31 of the armour elements can be joined or secured to thecable armour wires 27. Finally thetubes - It will be understood that in the case of two layer armoured cables or cross armoured cables there can be prepared two sets of tube-supported armour elements which can be placed one over the other. Each of the sets can be prepared as described above.
- The above detailed description of embodiments of this invention must be taken as examples only and should not be considered as limitations on the scope of protection.
Claims (7)
- Method for replacing the armour over a cable joint (20), including the steps of making a number of pretwisted armour elements, placing the elements over the joint and clamping, welding or soldering the ends of the elements to the cable armour (27,28) on both sides of the joint,
characterized by arranging a number of stranded or spiralled wire elements (12,16) on a tube (11,14-15) having a diameter larger than the cable core and the cable armour, in order to constitute an armouring device (10,13) and replacing the cable armour by inserting the tube (10,13) over one of the cable ends (21) before making the cable joint (20), sliding the tube over the cable joint when this is finished, withdrawing the tube (11,14-15) from underneath the armour elements (12,16), and clamping, welding or soldering the ends of the elements to the cable armour (27,28). - Method according to claim 1, characterized in that the elements are premade by stranding a number of armour elements (12) over a length of pipe or tube (4) having a diameter smaller than the cable core and cable core joint and thereafter transferring the elements from the tube (4) to the tube (11,14-15) of the armouring device (10,13).
- Method according to claim 2, characterized in this that the elements (12) are cut to correct length from a tube (4) which is long enough to support a number of successive lengths of armour element sections.
- Method according to claim 2 or 3, characterized in this that the elements (12) are stranded onto a tube (4) in a cable armour stranding machine (2).
- Method according to claim 2, 3 or 4,
characterized in this that after stranding the elements onto the tube (4), the tube is worked so as to take out the spring tension of the elements. - Method according to claim 1, characterized in this that the tube consists of two parts, e.g. one long (14) and one short (15), the shortest tube being withdrawn first so that the released armour ends (30) can be clamped to the cable armour (28) on one of the cable ends (22) before withdrawing the long tube (14) and clamping the other end (31) of the elements to the armour (27) of the other cable end (21).
- Method according to claim 1, characterized in this that it makes use of a tube or pipe made of reinforced plastic material.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO901471A NO170444C (en) | 1990-03-30 | 1990-03-30 | PROCEDURE FOR AA REPLACED REINFORCEMENT OVER A CABLET SHEET |
NO901471 | 1990-03-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0450271A2 EP0450271A2 (en) | 1991-10-09 |
EP0450271A3 EP0450271A3 (en) | 1992-08-05 |
EP0450271B1 true EP0450271B1 (en) | 1996-04-03 |
Family
ID=19893038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91100886A Expired - Lifetime EP0450271B1 (en) | 1990-03-30 | 1991-01-24 | Armour jointing method |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0450271B1 (en) |
NO (1) | NO170444C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE0003153L (en) * | 2000-09-07 | 2001-12-17 | Abb Ab | Procedure for resetting reinforcement on a cable |
SE0003152L (en) * | 2000-09-07 | 2001-12-17 | Abb Ab | Procedure for resetting reinforcement on a cable |
NO20035596L (en) * | 2003-12-15 | 2005-06-16 | Nexans | Fiber optic cable connection for offshore umbilical |
ES2929244T3 (en) * | 2018-10-26 | 2022-11-25 | Nkt Hv Cables Ab | Armored submarine power cable |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046544B1 (en) * | 1980-08-26 | 1983-12-14 | International Standard Electric Corporation | Process for the connection of cables |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE465409C (en) * | 1928-09-18 | Siemens Schuckertwerke Akt Ges | Process for the production of the reinforcement of connection points and built-in spool sleeves in submarine cables | |
US3701080A (en) * | 1971-06-02 | 1972-10-24 | Louise M Shonka | Miniature coaxial cable connector |
FR2537357B1 (en) * | 1982-12-03 | 1985-05-31 | Cables De Lyon Geoffroy Delore | ARMOR JOINING DEVICE FOR TWO ELECTRIC CABLES |
-
1990
- 1990-03-30 NO NO901471A patent/NO170444C/en unknown
-
1991
- 1991-01-24 EP EP91100886A patent/EP0450271B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046544B1 (en) * | 1980-08-26 | 1983-12-14 | International Standard Electric Corporation | Process for the connection of cables |
Also Published As
Publication number | Publication date |
---|---|
EP0450271A2 (en) | 1991-10-09 |
NO901471D0 (en) | 1990-03-30 |
NO901471L (en) | 1991-10-01 |
NO170444B (en) | 1992-07-06 |
EP0450271A3 (en) | 1992-08-05 |
NO170444C (en) | 1992-10-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4545645A (en) | Connection joining the ends of two under-water optical fiber cables and a method of manufacturing same | |
US5440665A (en) | Fiber optic cable system including main and drop cables and associated fabrication method | |
AU668521B2 (en) | Enclosure assembly for use over elongate cylindrical objects such as electric cable splices | |
US4516830A (en) | Junction for joining the ends of two under water optical fiber cables, and method of manufacture | |
EP0744806A1 (en) | Method for providing submarine cable joint protection and insulation using heat shrinkable tubing | |
NZ200757A (en) | Cable joint insulation:rollable elastic sleeves | |
EP0110507B1 (en) | Optical fibre cables | |
US4427262A (en) | Armor wire splices | |
US3332813A (en) | Method for splicing coaxial submarine cables | |
EP0450271B1 (en) | Armour jointing method | |
US2435284A (en) | Splice for conductors and method of splicing conductors | |
JP3867273B2 (en) | Optical fiber retainer | |
JP4087579B2 (en) | Optical fiber cable terminal structure and optical fiber cable terminal manufacturing method | |
JPH0481705A (en) | Tensile rigid coupling section between two photoconductor cable | |
NO173849B (en) | SKETCHING DEVICE FOR REINFORCEMENT OF TWO THREADMARED CABLES AND PROCEDURE FOR MANUFACTURING THE DEVICE | |
US5970596A (en) | Method and an assembly for positioning an elastic tubular covering on an element | |
US20050141832A1 (en) | Armouring joint, an armoured cable joint and a method for jointing armouring of two armoured cables | |
JPS59164508A (en) | Optical fiber cable and manufacture thereof | |
JP2572640B2 (en) | Optical fiber cable and method of forming terminal portion thereof | |
JPH05236630A (en) | Joint for optical fiber composite cable | |
CA2196300A1 (en) | Reinforced, variable-sized coupling for conduit | |
US20220367088A1 (en) | Branched wire harness manufacturing method | |
RU2207687C1 (en) | Aluminum-sheathed multicore cable junction box and method for connecting multicore cables (alternatives) | |
GB2221356A (en) | Protecting cable splice | |
JPH0432109A (en) | Manufacture of electric power/optical complex submarine cable |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): FR IT SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): FR IT SE |
|
17P | Request for examination filed |
Effective date: 19930120 |
|
17Q | First examination report despatched |
Effective date: 19941017 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): FR IT SE |
|
ITF | It: translation for a ep patent filed |
Owner name: DOTT. ANTONIO SERGI |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19971231 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990930 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19991220 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010125 |
|
EUG | Se: european patent has lapsed |
Ref document number: 91100886.0 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050124 |