GB2427453A - Ducting having internal hinge - Google Patents
Ducting having internal hinge Download PDFInfo
- Publication number
- GB2427453A GB2427453A GB0512582A GB0512582A GB2427453A GB 2427453 A GB2427453 A GB 2427453A GB 0512582 A GB0512582 A GB 0512582A GB 0512582 A GB0512582 A GB 0512582A GB 2427453 A GB2427453 A GB 2427453A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ducting
- ducting component
- component
- split line
- inner layer
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 claims abstract description 4
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 2
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 239000010955 niobium Substances 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/26—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting the pipes all along their length, e.g. pipe channels or ducts
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
An elongate tubular ducting component (10) of single piece construction which includes a first inner layer (28, fig. 3) and a second layer (30, fig. 3). Each of which layers is split along a radially extending split line and the inner layer (28) is provided wit at least one internal hinge (16) so that a unitary member is formed. Further, the outer layer (30) has a plurality of spaced cut-outs (4) arranged along the split line each of which cut-outs provides access to a circumferentially extending slot for receiving a tension band.
Description
Title: Improved Ducting The present invention relates to an improved cable and flow line protection system, which is particularly suitable for use in a harsh submarine environment.
It is known to provide a pipe or cable ducting formed from a plurality of identical sections. Each section is semi-tubular and the ends of adjacent sections fit together by means of a spigot and socket. Projections and corresponding recesses on the diametrically opposed exposed flat edges of each section enable identical sections to be connected over the open section, thereby forming the tubular ducting for protecting a pipe or cable.
It is also known from GB 2 260 590 A to provide ducting comprising a plurality of interconnectible elongate ducting components which when assembled define an elongate, longitudinally extending internal channel for receiving a pipe, cable or like elongate member, each ductmg component having a shaped inner face with a longitudinal recess such that the components can be assembled with confronting inner faces, their respective longitudinal recesses being thereby aligned to form the channel, the ducting further comprising tension bands for secunng assembled pairs of components to one another, wherein each ducting component is provided with a transversely extending internal cavity for receiving a tension band,the cavity having two open ends so that the band can pass through the internal cavity of one ducting component and through a corresponding internal cavity of an adjacent ducting component in order to secure one to the other, at least part of the band being thereby contained and protected within the cavities.
It is a disadvantage ofthe known ducting that during assembly of the known ducting components, tension bands that have been incorrectly fitted can only be remedied by complete removal of the affected ducti ng components from the pipe. This means that other tension bands that had been correctly fitted within those components have to be scrapped. The assembly of the ducting is frequently carried out in situ under less than ideal conditions where there is a high possibility of bands being incorrectly fitted thus causing an undesirable increase in installation time and scrap tension bands.
It is a further disadvantage ofthe known ductmg that the provision of accurately located projections and corresponding recesses used to provide location/al ignment increases the cost and complexity of manufacture ofthe ducting especially as inherent location/alignment is also provided by the tension bands.
It is an object of the present invention to provide a pipe or cable ducting in which the above disadvantages are reduced or substantially obviated.
The present invention provides an elongate tubular ducting component having a single piece construction and comprising a first inner layer and a second outer layer, each of which layers includes a single radially extending split line and the inner layer includes at least one internal hinge, the outer layer further comprising a plurality of spaced cut-outs arranged along the split line, and each providing access to a circumferentially extending slot for receiving a tension band.
The ducting component is preferably formed from a flexible synthetic plastics material, for example a polyurethane elastomer.
In a preferred embodiment ofthe ducting component according to the invention, the, or at least one of the i nternal hinge or hinges is located substantial ly diametrically opposed to the radially extending split line.
In a particularly preferred embodiment ofthe ducting component according to the invention, the inner layer includes three internal hinges, one ofwhich is located substantially diametrically opposed to the radially extending split line, and the others of which are each spaced at an angle of 120[deg] from the first hinge. Alternatively the internal hinges maybe arranged with an unequal spacing/angle that may suit a particular application.
In a preferred embodiment ofthc ducting component, the internal hinge provided in the inner layer may compri se a straight sided slit, a keyhole shape or a V-shaped slot formed in the inner layer, with the open top of the 'V' facing the inner channel of the tube and the apex of the 'V' facing towards the outer layer.
In a particularlypreferred embodiment ofthe ducting component according to the invention, a longitudinally extending slot is formed adjacent to the inner layer, at the location of the internal hinge located substantially diametrically opposed to the radially extending split line, to receive a soft grade polyurethane insert.
In a further particularly preferred embodiment of the ducting component according to the invention, a longitudinally extending slot is formed adjacent to the outer layer, substantially diametrically opposed to the single radially extending split line, to receive a soft grade polyurethane insert.
The present invention further provides an elongate tubular ducting component having a single piece construction and comprising a first inner layer and a second outer layer, each of which layers includes a single radially extending split line and the inner layer includes at least one internal hinge, the outer layer further comprising a plurality of spaced cut-outs arranged along the split line, and each providing access to a circumferentially extending slot for receiving a tension band, and a tension band.
The tension band is preferably formed from a corrosion resistant metal alloy, for example the nickel - chromium - molybdenum alloy with niobium addition, known as Alloy 625.
The invention will now be further described with reference to the accompanying drawings, in which Figure 1 is a perspective view of a ducting component in a closed configuration; Figure 2 is a longitudinal section of the ducting component of Figure 1; Figure 3 is a section on the line A-A of the ducting component of Figure 1; Figure 4 is a perspective view of the ducting component of Figure 1 in an open configuration, with the external walls shown as transparent; Figure 5 is a section corresponding to Figure 3, of a first alternative embodiment of a ducting component; Figure 5a is a detailed view on an enlarged scale of a cut-out of Figure 5 and Figure 6 is a section corresponding to Figure 3, of a second alternative embodiment of a ducting component.
As can be seen from Figures 1 and 3, a ducting component shown generally at 10 comprises a substantially hollow tube member 2, at intervals along the length ofwhich are spaced a number of cut-outs 4. Each of these cut-outs 4 is adapted to provide access 6 to a circumferentially extending band groove 8 for receiving a tension band not shown), the function ofwhich will be described below.
The side wall 14 ofthe split line can also be seen in Figures 1, 2 and 3. Substantially diametrically opposed to the split line, a first hinge member 16 comprises a straight-sided slit. Second and third hinge members 18 and 20 are disposed at approximately 120[deg] to the first hinge member 16.
As can be seen in more detail from Figure 4, the plurality ofband grooves 8 are spaced along the length ofthe ducting component 10, each with its associated cut-out 4. A first end ofthe ducting component terminates in a socket 22 and the second end in a spigot 24, to allow engagement between adjacent sections.
The ducting component according to the invention is shown in section in Figure 3, which is a transverse section at a position along the length of the component 10 where a band groove 8 is located. The edges of the cut-out 4 are chamfered at 26 and the ducting 10 is shown in the closed position.
The inner layer 28 and outer layer 30 of the ducting component can be seen, defining the circumferential band groove 8 there between.
In the first alternative embodiment of a ducting component as shown in Figure 5, the internal hinge is 111 the form of a keyhole and in the second alternative embodiment shown in Figure 6, the internal hinge is m the form of a V-shape.
As can also be seen in Figure 6, a longitudinally extending slot 32 may be formed adjacent to the inner layer 28, at the location of the internal hinge 16 located substantially diametrically opposed to the radially extending split line 14, to receive a soft grade polyurethane insert 34.
A longitudinally extending slot 36 is formed adjacent to the outer layer 30, substantially diametrically opposed to the single radially extending split line 14, to receive a soft grade polyurethane insert 38.
The ducting component according to the invention is particularly suitable for use in a cable and flow line protection system, in a harsh submarine environment.
In the installation procedure, the ducting component 10 is held open at the split line as shown in Figure 4 and located around a pipe or cable which is to be protected, as a sleeve as the pipe or cable is being laid or during the load - out operation. The combination of the hinge 16 and soft grade polyurethane inserts 26, 30 provide the ducting component with sufficient flexibility to open around the pipe or cable and then to close. The tension band 12 is then tightened and locked and the protective ducting is secure. A next section ofducting component is then installed by engaging the socket 18 of the first component with the spigot 20 ofthe next section, as the next section of pipe is laid.
In a typical installation, each ducting component 10 has an overall length of 1620 mm with an effective length of 1500mm, with a diameter of200 mm. Other lengths and diameters of component may be used as required in a particular application.
Claims (13)
1. An elongate tubular ducting component having a single piece construction and comprising a first inner layer and a second outer layer, each ofwhich layers includes a single radially extending split line and the inner layer includes at least one internal hinge, the outer layer further comprising a plurality of spaced cut-outs arranged along the split line, and each providing access to a circumferentially extending slot for receiving a tension band.
2. A ducting component as claimed in claim 1 which is formed from a flexible synthetic plastics material.
3. A ducting component as claimed in claim 2 in which the flexible synthetic plastics material is a polyurethane elastomer.
4. A ducting component as claimed in any of claims 1 to 3 in which the, or at least one of the internal hinge or hinges, is located substantially diametrically opposed to the radially extending split line.
5. A ducting component as claimed in any ofclaims 1 to 4 in which the inner layer includes three internal hinges.
6. A ducting component as claimed in claim 5 in which one ofthe internal hinges is located substantially diametrically opposed to the radially extending split line, and the others of which are each spaced at an angle of 120[deg] from the first hinge.
7. A ducting component as claimed in any of claims 1 to 6 in which the internal hinge provided in the inner layer comprises a straight sided slit, a keyhole shape or a V-shaped slot formed i n the inner layer, with the open top of the 'V' facing the inner channel of the tube and the apex of the 'V facing towards the outer layer.
8. A ducting component as claimed in any of claims 1 to 7 in which a longitudinally extending slot is formed adjacent to the inner layer, at the location of an internal hinge located substantially diametrically opposed to the radially extending split line, to receive a soft grade polyurethane insert.
9. A ducting component as claimed in any ofclaims 1 to 8 in which a longitudinally extending slot is formed adjacent to the outer layer, substantially diametrically opposed to the single radially extending split line, to receive a soft grade polyurethane insert.
10. A ducting component as claimed in any of claims 1 to 9 which further comprises a tension band.
11. A ducting component as claimed in claim 10 in which the tension band is formed from a corrosion resistant metal alloy.
12. A ducting component as claimed in claim 11 in which the corrosion resistant metal alloy is a corrosion resistant nickel -- chromium - molybdenum alloy with niobium addition
13. A ducting component substantially as herein described and with reference to the accompanying drawings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0512582A GB2427453B (en) | 2005-06-21 | 2005-06-21 | Improved ducting |
| BRPI0602434-3A BRPI0602434A (en) | 2005-06-21 | 2006-06-20 | elongated tubular conduit component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0512582A GB2427453B (en) | 2005-06-21 | 2005-06-21 | Improved ducting |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0512582D0 GB0512582D0 (en) | 2005-07-27 |
| GB2427453A true GB2427453A (en) | 2006-12-27 |
| GB2427453B GB2427453B (en) | 2009-12-09 |
Family
ID=34855866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0512582A Expired - Fee Related GB2427453B (en) | 2005-06-21 | 2005-06-21 | Improved ducting |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BRPI0602434A (en) |
| GB (1) | GB2427453B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786248A (en) * | 2016-12-22 | 2017-05-31 | 徐州建机工程机械有限公司 | A kind of novel circular tube connecton layout |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467659B (en) * | 2020-12-09 | 2022-03-25 | 河北化工医药职业技术学院 | Cable erection bridge structure for electromechanical engineering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175593A (en) * | 1976-12-28 | 1979-11-27 | Canadian General Electric Company Limited | Split duct with integral hinge |
| GB2260590A (en) * | 1991-09-03 | 1993-04-21 | Crp Marine Ltd | Protective ducting |
| GB2388640A (en) * | 2002-05-15 | 2003-11-19 | Crp Group Ltd | Protective ducting |
-
2005
- 2005-06-21 GB GB0512582A patent/GB2427453B/en not_active Expired - Fee Related
-
2006
- 2006-06-20 BR BRPI0602434-3A patent/BRPI0602434A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175593A (en) * | 1976-12-28 | 1979-11-27 | Canadian General Electric Company Limited | Split duct with integral hinge |
| GB2260590A (en) * | 1991-09-03 | 1993-04-21 | Crp Marine Ltd | Protective ducting |
| GB2388640A (en) * | 2002-05-15 | 2003-11-19 | Crp Group Ltd | Protective ducting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786248A (en) * | 2016-12-22 | 2017-05-31 | 徐州建机工程机械有限公司 | A kind of novel circular tube connecton layout |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2427453B (en) | 2009-12-09 |
| GB0512582D0 (en) | 2005-07-27 |
| BRPI0602434A (en) | 2007-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20160621 |