NL2015731B1 - Clamp system. - Google Patents

Clamp system. Download PDF

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Publication number
NL2015731B1
NL2015731B1 NL2015731A NL2015731A NL2015731B1 NL 2015731 B1 NL2015731 B1 NL 2015731B1 NL 2015731 A NL2015731 A NL 2015731A NL 2015731 A NL2015731 A NL 2015731A NL 2015731 B1 NL2015731 B1 NL 2015731B1
Authority
NL
Netherlands
Prior art keywords
pivot
axis
friction
organ
base
Prior art date
Application number
NL2015731A
Other languages
Dutch (nl)
Inventor
Cornelius Van Grieken Gerardus
Original Assignee
Heerema Marine Contractors Nl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heerema Marine Contractors Nl filed Critical Heerema Marine Contractors Nl
Priority to NL2015731A priority Critical patent/NL2015731B1/en
Priority to PCT/NL2016/050770 priority patent/WO2017078529A1/en
Application granted granted Critical
Publication of NL2015731B1 publication Critical patent/NL2015731B1/en

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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
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/202—Accessories therefor, e.g. floats, weights fixed on or to vessels
    • 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
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/202—Accessories therefor, e.g. floats, weights fixed on or to vessels
    • F16L1/207—Pipe handling apparatus
    • 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
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/23—Pipe tensioning apparatus

Abstract

A clamp system for holding a pipe member during pipe laying from a vessel, comprising multiple clamping devices which are radially positioned around a virtual cylinder having a longitudinal cylinder axis, wherein each clamping device comprises a friction unit and a unit driver configured to move the friction unit in a radial direction with respect to the longitudinal cylinder ax is from an inactive position wherein the friction unit in use is positioned at a distance from the pipe member to an active position wherein the friction unit in use is positioned in contact with the pipe member to provide a clamping force on the pipe member in the radial direction, and vice versa.

Description

Title: clamp system FIELD OF INVENTION
The invention relates to a clamp system for holding a pipe member during pipe laying from a vessel, comprising multiple clamping devices which are radially positioned around a virtual cylinder having a longitudinal cylinder axis.
Each clamping device comprises a friction unit and a unit driver configured to move the friction unit in a radial direction with respect to the longitudinal cylinder axis from an inactive position wherein the friction unit in use is positioned at a distance from the pipe member to an active position wherein the friction unit in use is positioned in contact with the pipe member to provide a clamping force on the pipe member in the radial direction, and vice versa.
Such clamp systems are used during pipe laying from a vessel as a static clamp or as a movable clamp. These clamps may be use to hold a pipe line suspending from the vessel to the seabed or to hold a pipe section which will be connected to such a pipeline. The term clamp system may also comprise a tensioner, which has the possibility to move the pads along the axial pipeline direction along a track to allow continuous lowering of a pipeline.
BACKGROUND OF INVENTION
The invention is based on the insight that the contact between the friction unit and the clamped pipe becomes suboptimal when the longitudinal pipe axis of the pipe member does not coincide with longitudinal cylinder axis of the virtual cylinder. The pipe member is in said situation located “off-centre”. The result is an unfavourable loading situation as the clamp system is pressed against the pipe member. Unacceptable peak stresses in either the friction unit or the pipe member can occur, which can reduce the allowable holding capacity of the clamp system.
SUMMARY OF INVENTION
It is an object of the invention to provide an improved, or at least alternative, clamp system. This is achieved by a clamp system for holding a pipe member during pipe laying from a vessel, comprising multiple clamping devices which are radially positioned around a virtual cylinder having a longitudinal cylinder axis, wherein - each clamping device comprises a friction unit and a unit driver configured to move the friction unit in a radial direction with respect to the longitudinal cylinder axis from an inactive position wherein the friction unit in use is positioned at a distance from the pipe member to an active position wherein the friction unit in use is positioned in contact with the pipe member to provide a clamping force on the pipe member in the radial direction, and vice versa, - the friction unit comprises a base structure which is attached to the unit driver, and a friction member having a contact side which in the inactive position is directed towards the longitudinal cylinder axis and a base side which is attached to the base structure by a first pivot member and a second pivot member, and - the first pivot member and second the pivot member are configured to allow movement of the friction member relative to the base structure.
The first and second pivot member allow that the friction member is moved relative to the base structure to obtain a better contact of the contact side on the pipe member. The first pivot member and the second pivot member of each clamping device are therefore configured to in use adjust the position of the friction member to a part of the pipe member being in contact with the contact side of the friction member located in the active position in order to clamp the pipe member having a longitudinal pipe axis extending at a distance from the longitudinal cylinder axis of the virtual cylinder.
In an embodiment of the clamp system according to the invention, the first pivot member and the second pivot member are located at a member distance from each other in a tangential direction extending perpendicular to the radial direction and the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention; - the first pivot member is in contact with the base structure via a first base pivot connection having a first base pivot axis and in contact with the friction member via a first member pivot connection having a first member pivot axis, - the second pivot member is in contact with the base structure via a second base pivot connection having a second base pivot axis and in contact with the friction member via a second member pivot connection having a second member pivot axis, and - the first base pivot axis, the second base pivot axis, the first member pivot axis and the second member pivot axis extend substantially parallel to the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention, the movement of the friction member relative to the base structure is defined by the first pivot member pivoting about the first base pivot axis and the second pivot member pivoting about the second base pivot axis.
In an embodiment of the clamp system according to the invention, the first base pivot axis and the first member pivot axis are located at a first axis distance from each other in the radial direction and the second base pivot axis and the second member pivot axis are located at a second axis distance from each other in the radial direction.
In an embodiment of the clamp system according to the invention, the first axis distance and the second axis distance are equal to each other.
In an embodiment of the clamp system according to the invention, the first base pivot axis and the first member pivot axis coincide and the second base pivot axis and the second member pivot axis coincide.
In an embodiment of the clamp system according to the invention, the contact side of the friction member extends around the longitudinal cylinder axis from a first side rim to a second side rim over a width distance in the tangential direction, and the first member pivot axis and the second member pivot axis are located between, and including, 0-20 % of the width distance from the first side rim and the second side rim, respectively.
In an embodiment of the clamp system according to the invention, the contact side of the friction member extends in the direction of the longitudinal cylinder axis from an upper rim to a lower rim over a length distance, and each of the first pivot member and the second pivot member extends along between, and including, 60 - 100 % of the length distance.
In an embodiment of the clamp system according to the invention, the first pivot member is formed by multiple first pivot parts which are positioned in line with each other and the second pivot member is formed by multiple second pivot parts which are positioned in line with each other.
In an embodiment of the clamp system according to the invention, the first pivot member and the second pivot member form in the inactive position the only support of the friction member in the radial direction with respect to the longitudinal cylinder axis and away from the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention, at least part of the fiction member located between the first and second pivot member has a reduced thickness in the radial direction to the longitudinal cylinder axis to create flexibility in the friction member in order to in use adjust the form of the friction member to a part of the pipe member being in contact with the contact side of the friction member located in the active position to clamp the pipe member.
In an embodiment of the clamp system according to the invention, the contact side of the friction member has in the inactive position a friction member radius which is larger, preferably between and including 1-5 %, than a pipe member radius of an outer surface of the pipe member.
In an embodiment of the clamp system according to the invention, the friction member comprises a support element provided between the first member pivot axis and the second member pivot axis, which support element is configured to transfer axial forces in the direction of the longitudinal cylinder axis to the base structure.
In an embodiment of the clamp system according to the invention, the friction member is made of steel.
In an embodiment of the clamp system according to the invention, the first and second pivot member and the base structure are made of steel.
In an embodiment of the clamp system according to the invention, in the tangential direction, the first member pivot axis is located at a member pivot distance from the second member pivot axis and the first base pivot axis located at a base pivot distance from the second base pivot axis, and the member pivot distance is larger than the base pivot distance.
In an embodiment of the clamp system according to the invention, the member pivot distance is between, and including, 10-30 % larger than the base pivot distance.
In an embodiment of the clamp system according to the invention; - the first pivot member comprises a first strip having a first member edge being in contact with the friction member at a first member contact surface and having a first base edge being in contact with the base structure at a first base contact surface, - the first base pivot connection is formed by the first member edge being rounded to define the first member pivot axis on the first member contact surface which is configured to receive the first member edge while allowing pivotal movement of the first pivot member about the first member pivot axis, - the first member pivot connection is formed by the first member edge being rounded to define the first member pivot axis on the first member contact surface which is configured to receive the first member edge while allowing pivotal movement of the first pivot member about the first member pivot axis, - the second pivot member comprises a second strip having a second member edge being in contact with the friction member at a second member contact surface and having a second base edge being in contact with the base structure at a second base contact surface, - the second base pivot connection is formed by the second member edge being rounded to define the second member pivot axis on the second member contact surface which is configured to receive the second member edge while allowing pivotal movement of the second pivot member about the second member pivot axis, and - the second member pivot connection is formed by the second member edge being rounded to define the second member pivot axis on the second member contact surface which is configured to receive the second member edge while allowing pivotal movement of the second pivot member about the second member pivot axis.
In an embodiment of the clamp system according to the invention, the base plate is coupled to the base structure via a coupling which locks the friction member in the radial direction and towards the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention; - the base structure comprises a locking opening which faces the friction member, has an opening dimension in the tangential direction and provides access to a locking chamber, - the friction member comprises a locking protrusion extending through the locking opening and connected to a locking element located in the locking chamber and having an element dimension in the tangential direction, - the element dimension of the locking element is larger than the opening dimension in order lock the friction member in the radial direction and towards the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention, the support element and the locking protrusion are formed as a single structure.
In an embodiment of the clamp system according to the invention, the multiple clamping devices are located at a fixed position relative to each other on a support structure.
In an embodiment of the clamp system according to the invention, the clamp system comprises four clamping devices positioned at an equal distance from each other around the longitudinal cylinder axis.
In an embodiment of the clamp system according to the invention, the friction member is friction pad configured to hold the clamped pipe member in a static position.
In an embodiment of the clamp system according to the invention, the friction member is a tensioner configured to move the clamped pipe member along the longitudinal cylinder axis.
The invention further relates to a pipe laying system for laying a pipeline on a seabed with a vessel, which pipe laying system comprises a clamp system according to the invention.
In an embodiment of the pipe laying system according to the invention, the clamp system forms a hang off clamp of the pipe laying system.
In an embodiment of the pipe laying system according to the invention, the clamp system forms a traveling clamp of the pipe laying system.
The invention further relates to a vessel comprising a pipe laying system according to the invention.
The invention further relates to a method of laying a pipeline on a seabed with a vessel, which method comprises the steps of; - providing a pipe member to a clamp system according to the invention, which clamp system is provided on a vessel, - placing the friction units of the clamping devices in the inactive position, - positioning the pipe member between the clamping devices, - moving the friction units in the active position to hold the pipe member by clamping the pipe member with the friction units.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the clamp system will be described by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: the Figures 1-3 schematically show a top view of an embodiment of the clamp system according to the invention, the Figures 4 and 5 schematically show a view in perspective of the clamp system of figure 1, the Figures 6 and 7 schematically show a view in perspective of one of the friction units of the clamp system of figure 1, the Figures 8A and 8B schematically shows a side view of the friction unit of figure 6,
Figure 9 schematically shows a top view of the friction unit of figure 6,
Figure 10 schematically shows a view in perspective of the friction units of the clamp system of figure 1, and
the Figures 11-16 schematically show a view in cross section of the clamp system of figure 4. DETAILED DESCRIPTION OF THE DRAWINGS
The Figures 1-3 show a top view of an embodiment of the clamp system 1 according to the invention. The clamp system 1 comprises multiple clamping devices 4 which are radially positioned around a virtual cylinder 5 having a longitudinal cylinder axis 6 (see fig. 1). Each clamping device 4 comprises a friction unit 7 and a unit driver 8 configured to move the friction unit 7 in a radial direction 9 with respect to the longitudinal cylinder axis 6 from an inactive position 10 (see fig. 2) wherein the friction unit 7 in use is positioned at a distance from a pipe member 2 to an active position 11 (see fig. 3) wherein the friction unit 7 in use is positioned in contact with the pipe member 2 to provide a clamping force on the pipe member 2 in the radial direction 9, and vice versa. The friction unit 7 comprises a base structure 12 which is attached to the unit driver 8, and a friction member 13 having a contact side 14 which in the inactive position 10 is directed towards the longitudinal cylinder axis 6 and a base side 15 which is attached to the base structure 12 by a first pivot member 16 and a second pivot member 17. The first pivot member 16 and second pivot member 17 are configured to allow movement of the friction member 13 relative to the base structure 12.
The first and second pivot member 16, 17 allow that the friction member 13 is moved relative to the base structure 12 to obtain a better contact of the contact side 14 on the pipe member 2. The first pivot member 16 and the second pivot member 17 of each clamping device 4 are therefore configured to in use adjust the position of the friction member 13 to a part of the pipe member 2 being in contact with the contact side 14 of the friction member 13 located in the active position 11 in order to clamp the pipe member 2 having a longitudinal pipe axis 3 extending at a distance from the longitudinal cylinder axis 6 of the virtual cylinder 5. This is amongst other shown in the figures 13-16.
The pipe member 2 has a longitudinal pipe axis 3 and an outer surface 60. In figure 2, the pipe member 2 is not clamped by the clamp system 1. The friction member radius 59 in said situation is indicated. When reference is made to the friction member radius 59, it relates to the friction member radius 59 in the situation that the pipe member 2 is not clamped by the clamp system 1.
The multiple clamping devices 4 are located at a fixed position relative to each other on a support structure (not shown. The four clamping devices 4 are positioned at an equal distance from each other around the longitudinal cylinder axis 6.
The shown friction members 13 are all friction pads. In other embodiments, the friction members 13 are formed by tensioners.
The figures 4 and 5 show a view in perspective of the clamp system 1 of figure 1. Only the friction units 7 of the clamping devices 4 are shown. The virtual cylinder 5 is shown in figure 4, and the pipe member 2 is shown in figure 5.
The friction member 13 comprises a support element 36 provided between the first member pivot axis 23 and the second member pivot axis 27, which support element 36 is configured to transfer axial forces in the direction of the longitudinal cylinder axis 6 to the base structure 12.
The figures 6 and 7 show a view in perspective of one of the friction units 7. The figures 8A, B and 9 show a side view and a top view, respectively, of the friction unit 7. Figure 8B differs from figure 8A in that the base structure 12 and the locking element 53 are removed. The contact side 14 of the friction member 13 extends in the direction of the longitudinal cylinder axis 6 from an upper rim 33 to a lower rim 34 over a length distance 35. Each of the first pivot member 16 and the second pivot member 17 extends along 95% of the length distance 35. In other embodiments, each of the first pivot member 16 and the second pivot member 17 extends along between, and including, 60- 100 % of the length distance 35. In other examples, the first pivot member 16 is formed by multiple first pivot parts which are positioned in line with each other and the second pivot member 17 is formed by multiple second pivot parts which are positioned in line with each other.
Figure 10 shows a similar view of the friction units 7 positioned around the virtual cylinder 5 as in figure 4, but with the difference that the base structure 12 and the locking element 53 are removed.
The figures 11 and 12A, B, and C show a view in cross section perpendicular to the longitudinal cylinder axis 6 of the clamp system 1 of figure 4.
The first pivot member 16 and the second pivot member 17 are located at a member distance 18 from each other in a tangential direction 19 extending perpendicular to the radial direction 9 and the longitudinal cylinder axis.
The first pivot member 16 is in contact with the base structure 12 via a first base pivot connection 20 having a first base pivot axis 21 and in contact with the friction member 13 via a first member pivot connection 22 having a first member pivot axis 23. The second pivot member 17 is in contact with the base structure 12 via a second base pivot connection 26 having a first member pivot axis 25 and in contact with the friction member 13 via a second member pivot connection 26 having a second member pivot axis 27. The first base pivot axis 21, the first member pivot axis 25, the first member pivot axis 23 and the second member pivot axis 27 extend substantially parallel to the longitudinal cylinder axis 6.
The first base pivot axis 21 and the first member pivot axis 23 are located at a first axis distance 28 from each other in the radial direction 9 and the first member pivot axis 25 and the second member pivot axis 27 are located at a second axis distance 29 from each other in the radial direction 9. The first axis distance 28 and the second axis distance 29 are equal to each other. In other embodiments, the first base pivot axis 21 and the first member pivot axis 23 coincide and the first member pivot axis 25 and the second member pivot axis 27 coincide.
The contact side 14 of the friction member 13 extends around the longitudinal cylinder axis 6 from a first side rim 30 to a second side rim 31 over a width distance 32 in the tangential direction 19, and the first member pivot axis 23 and the second member pivot axis 27 are located about 13% of the width distance 32 from the first side rim 30 and the second side rim 31, respectively. In other embodiments, the first member pivot axis 23 and the second member pivot axis 27 are located between, and including, 0-20 % of the width distance 32 from the first side rim 30 and the second side rim 31, respectively.
The first pivot member 16 and the second pivot member 17 form in the inactive position 10 the only support of the friction member 13 in the radial direction 9 with respect to the longitudinal cylinder axis 6 and away from the longitudinal cylinder axis 6.
At least part of the friction member 13 located between the first and second pivot member 17 has a reduced thickness t in the radial direction 9 to the longitudinal cylinder axis 6 to create flexibility in the friction member 13 in order to in use adjust the form of the friction member 13 to a part of the pipe member 2 being in contact with the contact side 14 of the friction member 13 located in the active position 11 to clamp the pipe member 2. The areas 61 with the reduced thickness t in the radial direction 9 are indicated in figure 12C.
When the pipe member 2 is clamped by the clamp system 1 while its longitudinal pipe axis 3 is located at a distance from the longitudinal cylinder axis 6, the form the friction member radius 59 may deform. The flexibility of the friction member 13 allows that it can adjust to the new form of the pipe member 2.
The contact side 14 of the friction member 13 has in the inactive position 10 a friction member radius 56 (see figure 11) which is larger, preferably between and including 1-5 %, than a friction member radius 59 of an outer surface 60 of the pipe member 2 (see figure 2). This facilitates the adjusting of the friction member 13 to the form of the pipe member 2.
The friction member 13 is made of steel. Steel provided the right flexibility for the friction member 13. The first and second pivot member 17 and the base structure 12 are also made of steel.
In the tangential direction 19, the first member pivot axis 23 is located at a member pivot distance 38 from the second member pivot axis 27 and the first base pivot axis 21 located at a base pivot distance 39 from the first member pivot axis 25, and the member pivot distance 38 is larger than the base pivot distance 39. The member pivot distance 38 is about 20 % larger than the base pivot distance. In other embodiments, the member pivot distance 38 is between, and including, 10-30 % larger than the base pivot distance.
The first pivot member 16 comprises a first strip 40 having a first member edge 41 being in contact with the friction member 13 at a first member contact surface 42 and having a first base edge 43 being in contact with the base structure 12 at a first base contact surface 57. The first base pivot connection 20 is formed by the first member edge 41 being rounded to define the first member pivot axis 23 on the first member contact surface 42 which is configured to receive the first member edge 41 while allowing pivotal movement of the first pivot member 16 about the first member pivot axis 23. The first member pivot connection 22 is formed by the first member edge 41 being rounded to define the first member pivot axis 23 on the first member contact surface 42 which is configured to receive the first member edge 41 while allowing pivotal movement of the first pivot member 16 about the first member pivot axis 23. The second pivot member 17 comprises a second strip 44 having a second member edge 45 being in contact with the friction member 13 at a second member contact surface 46 and having a second base edge 47 being in contact with the base structure 12 at a second base contact surface 58. The second base pivot connection 26 is formed by the second member edge 45 being rounded to define the second member pivot axis 27 on the second member contact surface 46 which is configured to receive the second member edge 45 while allowing pivotal movement of the second pivot member 17 about the second member pivot axis 27. The second member pivot connection 26 is formed by the second member edge 45 being rounded to define the second member pivot axis 27 on the second member contact surface 46 which is configured to receive the second member edge 45 while allowing pivotal movement of the second pivot member 17 about the second member pivot axis 27.
The base plate is coupled to the base structure 12 via a coupling 48 which locks the friction member 13 in the radial direction 9 and towards the longitudinal cylinder axis 6. The base structure 12 comprises a locking opening 49 which faces the friction member 13, has an opening dimension 50 in the tangential direction 19 and provides access to a locking chamber 51. The friction member 13 comprises a locking protrusion 52 extending through the locking opening 49 and connected to a locking element 53 located in the locking chamber 51 and having an element dimension 54 in the tangential direction 19. The element dimension 54 of the locking element 53 is larger than the opening dimension 50 in order lock the friction member 13 in the radial direction 9 and towards the longitudinal cylinder axis 6. The support element 36 and the locking protrusion 52 are formed as a single structure 55. In other embodiments, the support element 36 and the locking protrusion 52 are formed as separate structures
The figures 13 and 14 show the views in cross section of the figures 11 and 12 in the situation that the clamping device 4 clamp a pipe member 2 with its longitudinal pipe axis 3 extending at a distance from the longitudinal cylinder axis 6. The longitudinal pipe axis 3 is located at the right of the longitudinal cylinder axis 6. In the shown situation, the pipe member 2 is located about +10 mm off-centre. The position of the friction member 13s as shown in the figures 11 and 12 are indicted with discontinuous lines. This way, it can be seen how the upper and lower friction member 13s are moved. The movement of said friction member 13s relative to their base structure 12 is defined by the first pivot member 16 pivoting about the first base pivot axis 21 and the second pivot member 17 pivoting about the first member pivot axis 25.
The figures 15 and 16 show in a similar manner the situation that the pipe member 2 is located about -10 mm off-centre. 1. Clamp system 2. pipe member 3. longitudinal pipe axis 4. clamping devices 5. virtual cylinder 6. longitudinal cylinder axis 7. friction unit 8. unit driver 9. radial direction 10. inactive position 11. active position 12. base structure 13. friction member 14. contact side 15. base side 16. first pivot member 17. second pivot member 18. member distance 19. tangential direction 20. first base pivot connection 21. first base pivot axis 22. first member pivot connection 23. first member pivot axis 24. second base pivot connection 25. second base pivot axis 26. second member pivot connection 27. second member pivot axis 28. first axis distance 29. second axis distance 30. first side rim 31. second side rim 32. width distance 33. upper rim 34. lower rim 35. length distance 36. support element 37. 38. member pivot distance 39. base pivot distance 40. first strip 41. first member edge 42. first member contact surface 43. first base edge 44. second strip 45. second member edge 46. second member contact surface 47. second base edge 48. coupling 49. locking opening 50. opening dimension 51. locking chamber 52. locking protrusion 53. locking element 54. element dimension 55. single structure 56. friction member radius 57. first base contact surface 58. second base contact surface 59. pipe member radius 60. outer surface 61. area with reduced thickness t
As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting, but rather, to provide an understandable description of the invention.
The terms "a" or "an", as used herein, are defined as one or more than one. The term plurality, as used herein, is defined as two or more than two. The term another, as used herein, is defined as at least a second or more. The terms including and/or having, as used herein, are defined as comprising (i.e., open language, not excluding other elements or steps). Any reference signs in the claims should not be construed as limiting the scope of the claims or the invention.
It will be apparent to those skilled in the art that various modifications can be made to the clamp system and method without departing from the scope as defined in the claims.

Claims (32)

1. Klemsysteem (1) voor het houden van een pijporgaan (2) tijdens het pijpleggen van een vaartuig, omvattende meerdere kleminrichtingen (4) welke radiaal gepositioneerd zijn om een virtuele cilinder (5) bevattende een longitudinale cilinderas (6), waarbij - elke kleminrichting omvat een frictie-eenheid (7) en eenheidaandrijver (8) ingericht om de frictie-eenheid in een radiale richting (9) ten opzichte van de longitudinale cilinderas te bewegen van een inactieve positie (10) waarbij de frictie-eenheid in gebruik gepositioneerd is op een afstand van het pijporgaan naar een actieve positie (11) waarbij de frictie-eenheid in gebruik in contact geplaatst is met het pijporgaan om een klemmende kracht op het pijporgaan in een radiale richting te verschaffen, en vice versa, - de frictie-eenheid omvat een basisconstructie (12) die bevestigd is aan de eenheidaandrijver, en een frictieorgaan (13) bevattende een contactzijde (14) welke in de inactieve positie is gericht naar de longitudinale cilinderas en een basiszijde (15) welke bevestigd is aan de basisconstructie door een eerste zwenkorgaan (16) en een tweede zwenkorgaan (17), en - het eerste zwenkorgaan en het tweede zwenkorgaan zijn ingericht om beweging van het frictieorgaan ten opzichte van de basisconstructie toe te staan.Clamping system (1) for holding a pipe member (2) during pipe laying of a vessel, comprising a plurality of clamping devices (4) radially positioned about a virtual cylinder (5) comprising a longitudinal cylinder axis (6), wherein - each clamping device includes a friction unit (7) and unit driver (8) adapted to move the friction unit in a radial direction (9) relative to the longitudinal cylinder axis from an inactive position (10) with the friction unit positioned in use is spaced from the pipe member to an active position (11) wherein the friction unit is in contact with the pipe member in use to provide a clamping force on the pipe member in a radial direction, and vice versa, the frictional unit includes a base structure (12) attached to the unit driver, and a friction member (13) including a contact side (14) which is in the inactive position facing the longitudinal cili nder axis and a base side (15) which is attached to the base structure by a first swing member (16) and a second swing member (17), and - the first swing member and the second swing member are adapted to allow movement of the friction member relative to the base construction to stand. 2. Klemsysteem volgens conclusie 1, waarbij het eerste zwenkorgaan en het tweede zwenkorgaan van elke kleminrichting is ingericht om in gebruik de positie van het frictieorgaan aan te passen aan een deel van het pijporgaan dat in contact staat met de contactzijde van het frictieorgaan welke zich in de actieve positie bevindt om het pijporgaan (2) bevattende een longitudinale pijpas (3) welke zich uitstrekt op een afstand van de longitudinale cilinderas (6) van de virtuele cilinder (5) te klemmen.A clamping system according to claim 1, wherein the first pivot member and the second pivot member of each clamping device is adapted to adjust the position of the friction member in use to a portion of the pipe member that is in contact with the contact side of the friction member located in the active position is to clamp the pipe member (2) including a longitudinal pipe axis (3) extending at a distance from the longitudinal cylinder axis (6) of the virtual cylinder (5). 3. Klemsysteem volgens een van de voorgaande conclusies, waarbij het eerste zwenkorgaan en het tweede zwenkorgaan zich bevinden op een orgaanafstand van elkaar in een tangentiële richting (19) welke zich uitstrekt loodrecht op de radiale richting en de longitudinale cilinderas.Clamping system according to any of the preceding claims, wherein the first pivot member and the second pivot member are spaced apart from each other in a tangential direction (19) extending perpendicular to the radial direction and the longitudinal cylinder axis. 4. Klemsysteem volgens een van de voorgaande conclusies, waarbij; - het eerste zwenkorgaan in contact staat met de basisconstructie via een eerste basiszwenkverbinding (20) bevattende een eerste basiszwenkas (21) en in contact staat met het frictieorgaan via een eerste orgaanzwenkverbinding (22) bevattende een eerste orgaanzwenkas (23), - het tweede zwenkorgaan in contact staat met de basisconstructies via een tweede basiszwenkverbinding (24) bevattende een tweede basiszwenkas (25) en in contact staat met het frictieorgaan via een tweede orgaanzwenkverbinding (26) bevattende een tweede orgaanzwenkas (27), en - de eerste basiszwenkas, de tweede basiszwenkas, het eerste orgaanzwenkas en het tweede orgaanzwenkas zich in hoofdzaak parallel aan de longitudinale cilinderas uitstrekken.4. Clamping system according to one of the preceding claims, wherein; - the first pivot member is in contact with the basic structure via a first basic pivot connection (20) comprising a first basic pivot axis (21) and is in contact with the friction member via a first organ pivot connection (22) including a first member pivot axis (23), - the second pivot member is in contact with the base structures via a second base pivot connection (24) including a second base pivot axis (25) and is in contact with the friction member via a second organ pivot connection (26) including a second organ pivot axis (27), and - the first base pivot axis, the second base pivot axis, the first organ pivot axis and the second organ pivot axis extend substantially parallel to the longitudinal cylinder axis. 5. Klemsysteem volgens conclusie 4, waarbij de beweging van het frictieorgaan ten opzichte van de basisconstructie bepaald wordt door het eerste zwenkorgaan die zwenkt om de eerste basiszwenkas en het tweede zwenkorgaan die zwenkt om de tweede basiszwenkas.The clamping system of claim 4, wherein the movement of the friction member relative to the base structure is determined by the first swing member pivoting about the first base pivot axis and the second pivot member pivoting about the second base pivot axis. 6. Klemsysteem volgens conclusie 4 of 5, waarbij het eerste zwenkorgaan en het tweede zwenkorgaan zich bevinden op een eerste asafstand van elkaar in de radiale richting en de tweede basiszwenkas en de tweede orgaanzwenkas zich bevinden op een tweede asafstand van elkaar in de radiale richting.A clamping system according to claim 4 or 5, wherein the first pivot member and the second pivot member are located at a first axis distance from each other in the radial direction and the second base pivot axis and the second member pivot axis are located at a second axis distance from each other in the radial direction. 7. Klemsysteem volgens conclusies 4-6, waarbij de eerste asafstand en de tweede as afstand gelijk aan elkaar zijn.A clamping system according to claims 4-6, wherein the first axis distance and the second axis distance are equal to each other. 8. Klemsysteem volgens conclusie 4 of 5, waarbij de eerste basiszwenkas en de eerste orgaanzwenkas samen vallen en de tweede basiszwenkas en de tweede orgaanzwenkas samen vallen.8. Clamping system according to claim 4 or 5, wherein the first basic pivot axis and the first organ pivot axis coincide and the second basic pivot axis and the second organ pivot axis coincide. 9. Klemsysteem volgens een van de voorgaande conclusies, waarbij de contactzijde van het frictieorgaan zich uitstrekt langs de longitudinale cilinderas van een eerste zijwand tot een tweede zijwand over een breedteafstand in de tangentiële richting, en de eerste orgaanzwenkas en de tweede orgaanzwenkas zich bevinden tussen, en inclusief, 0-20% van de breedte afstand van de eerste zijwand en de tweede zijwand, respectievelijk.9. Clamping system according to any of the preceding claims, wherein the contact side of the friction member extends along the longitudinal cylinder axis from a first side wall to a second side wall over a width distance in the tangential direction, and the first organ pivot axis and the second organ pivot axis are between, and including, 0-20% of the width distance of the first side wall and the second side wall, respectively. 10. Klemsysteem volgens een van de voorgaande conclusies, waarbij de contactzijde van het frictieorgaan zich uitstrekt in de richting van de longitudinale cilinderas van een bovenste wand tot een onderste wand over een lengteafstand, en elk van het eerste zwenkorgaan en tweede zwenkorgaan zich uitstrekken tussen, en inclusief 60-100% van de lengteafstand.10. Clamping system as claimed in any of the foregoing claims, wherein the contact side of the friction member extends in the direction of the longitudinal cylinder axis from an upper wall to a lower wall over a longitudinal distance, and each of the first pivot member and second pivot member extend between, and including 60-100% of the length distance. 11. Klemsysteem volgens een van de voorgaande conclusies, waarbij het eerste zwenkorgaan wordt gevormd door meerdere eerste zwenkdelen welke in lijn met elkaar gepositioneerd zijn en het tweede zwenkorgaan wordt gevormd door meerdere tweede zwenkdelen welke in lijn met elkaar gepositioneerd zijn.11. Clamping system according to one of the preceding claims, wherein the first pivot member is formed by a plurality of first pivot members that are positioned in line with each other and the second pivot member is formed by a plurality of second pivot members that are positioned in line with each other. 12. Klemsysteem volgens een van de voorgaande conclusies, waarbij het eerste zwenkorgaan en het tweede zwenkorgaan in de inactieve positie de enige steun vormen van het frictieorgaan in de radiale richting ten opzichte van de longitudinale cilinderas en weg van de longitudinale cilinderas.12. Clamping system as claimed in any of the foregoing claims, wherein the first pivot member and the second pivot member in the inactive position form the sole support of the friction member in the radial direction relative to the longitudinal cylinder axis and away from the longitudinal cylinder axis. 13. Klemsysteem volgens een van de voorgaande conclusies, waarbij ten minste het deel van het frictieorgaan dat zich bevindt tussen het eerste en tweede zwenkorgaan een gereduceerde dikte heeft in de radiale richting naar de longitudinale cilinderas voor het vormen van flexibiliteit in het frictieorgaan om in gebruik de vorm van het frictieorgaan aan te passen aan een deel van het pijporgaan dat in contact staat met de contactzijde van het frictieorgaan dat zich in de actieve positie bevindt om het pijporgaan te klemmen.The clamping system of any preceding claim, wherein at least the portion of the friction member located between the first and second pivot members has a reduced thickness in the radial direction to the longitudinal cylinder axis for forming flexibility in the friction member for use adapting the shape of the friction member to a portion of the pipe member that is in contact with the contact side of the friction member that is in the active position to clamp the pipe member. 14. Klemsysteem volgens een van de voorgaande conclusies, waarbij het contactoppervlak van het frictieorgaan in de inactieve positie een frictieorgaanradius heeft die groter is, bij voorkeur tussen en inclusief 1-5%, dan een pijporgaanradius van een buitenoppervlak van het pijporgaan.Clamping system according to any of the preceding claims, wherein the contact surface of the friction member in the inactive position has a friction member radius that is greater, preferably between and including 1-5%, than a pipe member radius of an outer surface of the pipe member. 15. Klemsysteem volgens een van de voorgaande conclusies, waarbij het frictieorgaan omvat een steunelement dat verschaft is tussen het eerste orgaanzwenkas en een tweede orgaanzwenkas, welk steunelement is ingericht om axiale krachten over te brengen in de richting van de longitudinale cilinderas naar de basisconstructie.Clamping system according to any of the preceding claims, wherein the friction member comprises a support member provided between the first member pivot axis and a second member pivot axis, which support member is adapted to transmit axial forces in the direction of the longitudinal cylinder axis to the base structure. 16. Klemsysteem volgens een van de voorgaande conclusies, waarbij het frictieorgaan gemaakt is van staal.16. Clamping system according to one of the preceding claims, wherein the friction member is made of steel. 17. Klemsysteem volgens een van de voorgaande conclusies, waarbij het eerste en tweede zwenkorgaan en de basisconstructie gemaakt zijn van staal.17. Clamping system as claimed in any of the foregoing claims, wherein the first and second pivot member and the basic construction are made of steel. 18. Klemsysteem volgens een van de voorgaande conclusies, waarbij in de tangentiële richting de eerste orgaanzwenkas zich bevindt op een orgaanzwenkafstand van de tweede orgaanzwenkas en het eerste basiszwenkas zich bevindt op een basiszwenkafstand van de tweede basisas en het orgaanzwenkafstand groter is dan de basiszwenkafstand.A clamping system according to any of the preceding claims, wherein in the tangential direction the first organ pivot axis is at an organ pivot distance from the second organ pivot axis and the first base pivot axis is at a base pivot distance from the second base axis and the organ pivot distance is greater than the base pivot distance. 19. Klemsysteem volgens conclusie 18, waarbij de orgaanzwenkas is tussen en inclusief 10-30% langer dan de basiszwenkas.The clamping system of claim 18, wherein the organ pivot axis is between and including 10-30% longer than the base pivot axis. 20. Klemsysteem volgens een van de voorgaande conclusies, waarbij; - het eerste zwenkorgaan omvat een eerste strip bevattende een eerste orgaanrand die in contact staat met het frictieorgaan bij een eerste orgaancontactoppervlak en bevattende een eerste basisrand die in contact staat met de basisconstructie bij een eerste basiscontactoppervlak, - de basiszwenkverbinding wordt gevormd door de eerste orgaanrand die afgerond is om de eerste orgaanzwenkas te bepalen op het eerste orgaancontactoppervlak welke is ingericht om de eerste orgaanrand te ontvangen terwijl zwenkbeweging van het eerste zwenkorgaan om de eerste orgaanzwenkas toe te staan, - de eerste orgaanzwenkverbinding wordt gevormd door de eerste orgaanrand die afgerond is om de eerste orgaanzwenkas te bepalen op het eerste orgaancontactoppervlak welke is ingericht om de eerste orgaanrand te ontvangen terwijl zwenkbeweging van het eerste zwenkorgaan om de eerste orgaanzwenkas toe te staan, - de tweede basiszwenkverbinding wordt gevormd door de tweede orgaanrand die afgerond is om de tweede orgaanzwenkas te bepalen op het tweede orgaancontactoppervlak die is ingericht om de tweede orgaanrand te ontvangen terwijl beweging van het tweede zwenkorgaan om de tweede orgaan zwenkas wordt toegestaan, en - de tweede orgaanzwenkverbinding wordt gevormd door de tweede orgaanrand die afgerond is om de tweede orgaanzwenkas te bepalen op het tweede orgaancontactoppervlak welke is ingericht om de tweede orgaanrand te ontvangen terwijl zwenkbeweging van het tweede zwenkorgaan om de tweede orgaanzwenkas wordt toegestaan.A clamping system according to any of the preceding claims, wherein; - the first pivot member comprises a first strip comprising a first member edge that is in contact with the friction member at a first member contact surface and containing a first base edge that is in contact with the basic structure at a first basic contact surface, - the basic pivot connection is formed by the first member edge which is rounded to determine the first organ pivot axis on the first organ contact surface which is adapted to receive the first organ edge while allowing pivoting movement of the first pivot member about the first organ pivot axis, - the first organ pivot connection is formed by the first organ edge which is rounded around the determine first organ pivot axis on the first organ contact surface adapted to receive the first organ edge while allowing pivoting movement of the first pivot member to allow the first organ pivot axis, - the second basic pivot connection is formed by the second member edge rounded around the second organ determine pivot axis on the second member contact surface adapted to receive the second member edge while allowing movement of the second pivot member about the second member pivot axis, and - the second member pivot connection is formed by the second member edge that is rounded to define the second member pivot axis on the second member contact surface adapted to receive the second member edge while allowing pivoting movement of the second pivot member about the second member pivot axis. 21. Klemsysteem volgens een van de voorgaande conclusies, waarbij de basisplaat is gekoppeld aan de basisconstructie via een koppeling welke het frictieorgaan opsluit in de radiale richting en naar de longitudinale cilinderas.A clamping system according to any one of the preceding claims, wherein the base plate is coupled to the base structure via a coupling which confines the friction member in the radial direction and to the longitudinal cylinder axis. 22. Klemsysteem volgens een van de voorgaande conclusies, waarbij; - de basisconstructie omvat een opsluitopening welke gericht is naar het frictieorgaan, een openingsafmeting in de tangentiële richting heeft en toegang tot een opsluitkamer verschaft, - het frictieorgaan omvat een opsluituitsteeksel welke zich uitstrekt door de opsluitopening en verbonden is met een opsluitelement welke zich in de opsluitkamer bevindt en een elementafmeting in de tangentiële richting heeft, - de elementafmeting van het opsluitelement langer is dan de openingsafmeting om het frictieorgaan op te sluiten in de radiale richting en naar de longitudinale cilinderas.A clamping system according to any of the preceding claims, wherein; - the basic structure comprises a confinement opening facing the friction member, has an opening dimension in the tangential direction and provides access to a confinement chamber, - the friction member comprises a confinement protrusion extending through the confinement opening and connected to a confinement element which is located in the confinement chamber and has an element size in the tangential direction, - the element size of the retaining element is longer than the opening size to confine the friction member in the radial direction and toward the longitudinal cylinder axis. 23. Klemsysteem volgens conclusie 22, waarbij het steunelement en het opsluituitsteeksel als een enkele constructie gevormd zijn.The clamping system of claim 22, wherein the support member and the retaining protrusion are formed as a single structure. 24. Klemsysteem volgens een van de voorgaande conclusies, waarbij de meerdere kleminrichtingen zich in een gefixeerde positie ten opzichte van elkaar bevinden op een steunconstructie.A clamping system according to any one of the preceding claims, wherein the plurality of clamping devices are in a fixed position relative to each other on a support structure. 25. Klemsysteem volgens een van de voorgaande conclusies, waarbij het klemsysteem vier kleminrichtingen omvat welke gepositioneerd zijn op gelijke afstand van elkaar om de longitudinale cilinderas.A clamping system according to any one of the preceding claims, wherein the clamping system comprises four clamping devices which are positioned at equal distances from each other about the longitudinal cylinder axis. 26. Klemsysteem volgens een van de voorgaande conclusies, waarbij het frictieorgaan een frictieschoen is ingericht om het geklemde pijporgaan in een statische positie te houden.A clamping system according to any one of the preceding claims, wherein the friction member is a friction shoe adapted to hold the clamped pipe member in a static position. 27. Klemsysteem volgens een van de conclusies 1-25, waarbij het frictieorgaan een tensioner is ingericht om het geklemde pijporgaan te bewegen langs de longitudinale cilinderas.A clamping system according to any of claims 1-25, wherein the friction member is a tensioner adapted to move the clamped pipe member along the longitudinal cylinder axis. 28. Pijplegsysteem voor het leggen van een pijplijn op een zeebodem met een vaartuig, welke pijplegsysteem omvat een klemsysteem volgens een van de voorgaande conclusies.A pipeline system for laying a pipeline on a seabed with a vessel, said pipeline system comprising a clamping system according to any one of the preceding claims. 29. Pijplegsysteem volgens conclusie 28, waarbij het pijplegsysteem een afhangklem van het pijplegsysteem vormt.The pipe laying system of claim 28, wherein the pipe laying system forms a suspension clamp of the pipe laying system. 30. Pijplegsysteem volgens conclusie 28, waarbij het klemsysteem een beweegbare klem van het pijplegsysteem vormt.The pipe laying system of claim 28, wherein the clamping system forms a movable clamp of the pipe laying system. 31. Vaartuig omvattende een pijplegsysteem volgens een van de conclusies 28-30.A vessel comprising a pipe laying system according to any of claims 28-30. 32. Werkwijze voor het leggen van een pijplijn op een zeebodem met een vaartuig, welke werkwijze omvat de stappen van; - het verschaffen van een pijporgaan aan een klemsysteem volgens een van de conclusies 1-27, welke klemsysteem is verschaft op een vaartuig, het plaatsen van frictie-eenheden van de kleminrichting in de inactieve positie, - het positioneren van het pijporgaan tussen de kleminrichtingen, het verplaatsen van de frictie-eenheden in de actieve positie voor het vast houden van het pijporgaan door het klemmen van het pijporgaan met de frictie-eenheden.A method of laying a pipeline on a seabed with a vessel, the method comprising the steps of; - providing a pipe member to a clamping system according to any of claims 1-27, which clamping system is provided on a vessel, placing friction units of the clamping device in the inactive position, - positioning the pipe member between the clamping devices, moving the friction units to the active position for holding the pipe member by clamping the pipe member with the friction units.
NL2015731A 2015-11-05 2015-11-05 Clamp system. NL2015731B1 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
US20020021942A1 (en) * 2000-06-05 2002-02-21 Willis Stewart Kenyon Pipe handling apparatus
US7226244B1 (en) * 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20120177443A1 (en) * 2008-11-28 2012-07-12 Saipem S.P.A. Clamp Assembly For A Laying Tower And A Method Thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020021942A1 (en) * 2000-06-05 2002-02-21 Willis Stewart Kenyon Pipe handling apparatus
US7226244B1 (en) * 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20120177443A1 (en) * 2008-11-28 2012-07-12 Saipem S.P.A. Clamp Assembly For A Laying Tower And A Method Thereof

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