Procedure for positioning and orienting a submerged element

Abstract

A method for positioning and orienting a submersible element 10 for the purpose of placing the submersible element on and / or in the bottom of a body of water using a floating device 20 comprising a hoisting boom 22 to which a hoisting cable 24 is attached. The hoisting boom 22 is equipped with two parallel hoisting cables 24, 25, each of which is attached to the submersible element 10, whereby the attachment points 12, 13 of both hoisting cables 24, 25 on the submersible element 10 are spaced apart in at least the width direction X of the submersible element and / or of the floating device 20, whereby the method comprises the step of: positioning the submersible element 10, and orienting the submersible element 10 by rotating the submersible element 10 around a vertical axis for placement on the bottom of the water.

Description

Title: Procedure for positioning and orienting a submerged element Description: The present invention has, according to a first aspect, relating to a method for positioning and orienting a sinking element for the purpose of placing on and / or in the bottom of a body of water the sinking element. Fixing sinking elements, such as anchors or other structures, in the bottom of a body of water, for example the seabed or the bottom of a lake or plas, is a field in which many developments have taken place in recent years took place specifically for the purpose of installing solar panels on various locations, including on water, in so-called floating solar parks. Such a floating solar park must also be properly anchored, for example to to protect it from drifting away. For this purpose, nowadays, for example, sinking elements such as ground anchors fixed in the bottom of the water on which the solar park floats. Anchoring this in the seabed is done using techniques derived from the are known in the offshore world, such as the use of a vibratory hammer, whether or not combined with a pile driver, to drive a ground anchor into the bottom of a body of water vibrate and / or pile drive. It is also possible to use concrete blocks as sinking elements. fit, by placing the concrete blocks on the bottom of the water. Then the solar park's anchor boats are connected with anchor cables or chains with one or more sinking elements, such that the solar park is properly anchored and cannot drift away and become damaged. The number of anchor boats required in a solar park and the number of ground anchors and / or concrete blocks required for this is Engineered in detail in advance, placing high demands on the position of the sinking elements on the bottom but also to the orientation of these sinking elements. The anchor cables between the sinking elements and the anchor boats. must be as short as possible, so that rotation of the sinking elements in or on the bottom the water is prevented. To this end, the fastening points, such as attachment eyes or hooks, directed towards the sinking elements for the anchor cable to the solar park's anchor boats. All of this is carried out from a vessel on the Floating water device. It has been shown that correctly positioning and simultaneously orienting the submersible element often cannot be properly installed underwater, with the result that submersible elements emerge from the soil or anchor cables emerge and the solar park that is (was) anchored to it drifts away and is often irreparably damaged. This results in economic damage of several million euros. In the In practice, it proves difficult to correctly orient immersion elements relative to the anchor boats. It is therefore an objective of the present invention to a to provide a method that is successful in positioning and orienting a sinking element for the purpose of placing on and / or in the bottom of a body of water the sinking element. To that end, according to a first aspect of the invention, a method provided for positioning and orienting a sinking element for the purpose of placing the sinking element on and / or in the bed of a body of water, using: - a floating structure suitable for carrying out work on the water, the floating device comprises a hoisting boom to which a hoisting cable is attached is confirmed; - a sinking element, such as a concrete block or a ground anchor, that with the hoisting cable can be moved in a vertical direction upwards or towards down to the bottom of the water; where the method includes the steps of: - positioning the floating device so that the sinking element on a desired position is positioned above or in the water; where the hoisting boom is equipped with two parallel hoisting cables, each of which attached to the sinking element, whereby the attachment points of both hoisting cables on the sinking element are spaced apart in at least the width direction of the sinking element and / or of the floating installation, where the method furthermore includes the step of: - orienting the sinking element by rotating the sinking element around a vertical axis for placement on the bottom of the water. By using two hoisting cables, the sinking elements always remain secure. oriented with respect to the floating structure, even when the sinking element is underwater, so that after rotating the sinking element into the correct orientation the sinking element maintains the correct orientation during placement on the bottom of the water. In a simple, economical configuration, the two parallel hoisting cables are attached to two winches, whereby the two winches are mounted in the head of the hoisting boom. In this way, the hoisting boom can be quickly configured for hoisting, positioning and orienting a submerged element such as a concrete block. In an alternative configuration, the two parallel hoisting cables are attached. to two winches, where the winches are mounted at the end of the hoisting boom, which end is attached to the floating device, and where the hoisting cables over the hoisting boom are guided to the head of the hoisting boom. The hoisting cables are now from the floating structure celebrated and erected with on the floating structure and the Two winches mounted on the hoisting boom. Both winches can be economically mounted in a winch drum. When the two hoisting cables are guided over the boom, preferably the top of the hoisting boom equipped with two fixed hoisting pulleys for both hoisting cables, at preferably, the pivot axes of the hoisting pulleys lie in line with each other in the width direction of the floating device, so that the correct position can be easily determined and orientation of the sinking element on the hoisting cables can be ensured. Preferably, the step of orienting the immersion element includes rotation. in the water of the floating device. By rotating the floating device in the water its additional mechanical provisions on the floating structure not necessary and can be a sinking element correctly faster and therefore cheaper positioned on the bottom of the water. In particular, the step of positioning and orienting further includes the monitoring the position of the floating structure, preferably using made from GNSS, like a GPS tracker, preferably with a correction signal. With the aid of a Global Navigation Satellite System (GNSS) such as Global Positioning System (GPS), preferably with a correction signal, can determine the position and the orientation of floating device be determined and checked to the floating to bring the device into the correct position and orientation so that the sinking element in the correct position and orientation on or in the bottom of the water can be established. In an alternative step, orienting the sinking element involves rotating. of the sinking element relative to the hoisting cables. In particular, the hoisting cables connected to a hydraulic and / or electric slewing element or slewing ring, where the hydraulic and / or electric swivel element or the slewing ring is provided between the hoisting cables and the sinking element, and where the step of the rotation of the immersion element the swiveling of the immersion element to a vertical pivot axis relative to the hoisting cables. In a special embodiment, the submersible element is an assembly of a driving device and a ground anchor, whereby the driving device is designed for the insertion of the ground anchor into the soil, whereby the driving device is attached to the hoisting cables; and where the ground anchor is installed under / at the driving device. In this configuration, the hydraulic and / or electric swivel element is or the slewing ring provided between the hoisting cables and the drive device or between the driving device and the ground anchor to position the sinking element in the desired orientation bring without rotating the floating device. In a special configuration, the head of the hoisting boom is equipped with hose pulleys, preferably one or more hydraulic hoses or electrical cables provided on the hose pulleys, whereby one or more hydraulic hoses or Electrical cables are configured for controlling and operating the drive device. Preferably, a drum reel is provided for picking up and winding up one or more hydraulic hoses or electrical cables. In a preferred configuration, the hoisting boom is permanently connected to the floating structure. arrangement, where the hoisting boom extends in the longitudinal direction of the floating arrangement. This measure allows the sinking element to be positioned and oriented by positioning the floating structure and by orienting of the sinking element by rotating the floating device or by the orienting the immersion element by rotating the immersion element using of a swivel element or slewing ring. According to a second aspect of the invention, provision is made for a floating setup for carrying out the method for positioning and orienting a sinking element for placement on the bottom of a body of water and / or anchoring the sinking element, where the hoisting boom is permanently connected to the floating device, and where the hoisting boom extends in the longitudinal direction of the floating installation, and where the hoisting boom is equipped with two parallel hoisting cables, each of which attached to the sinking element, whereby the attachment points of both hoisting cables on the sinking element are spaced apart in at least the width direction of the sinking element and / or of the floating installation. In particular, the hoisting cables are connected to a hydraulic and / or electric swivel element or slewing ring, where the hydraulic and / or electric A swivel element or slewing ring is provided between the hoisting cables and the drive device. or between the driving device and the ground anchor, and where the hydraulic and / or electric swivel element or the turntable is designed for swiveling the drive device or ground anchor for a vertical pivot axis relative to the hoisting cables, to be able to use them to the ground anchor connected to the driving device orientate. These and other aspects of the present invention will be described in more detail. are shown on the basis of the attached figures. In these figures, the same refers reference figures always refer to the same or similar components and parts. Figure 1 shows a top-view perspective of the floating setup for carrying out the method for positioning and orienting a sinking element; Figure 2 shows a perspective underside view of the floating innching; Figure 3 shows a front view of the floating structure; Figure 4 shows a perspective view of the head of the hoist boom. with a sinking element on two hoisting cables. Figures 1 through 4 are discussed together. These figures illustrate a method for positioning and orienting a sinking element for the purpose of the placing of the sinking element 10 on and / or in the bottom of a body of water. The Sinking element 10 is preferably a concrete block or a ground anchor. The sinking elements are often used for anchoring structures floating on the water such as a floating solar park, to protect it from drifting away. To that end, is a floating solar park usually equipped with anchor boats, which with anchor cables or chains are connected to one or more anchors or sinking elements, such that the solar park is well anchored and cannot drift away and be damaged can hit. To properly connect the sinking elements to the anchor boats, the sinking elements must be in the correct position on the bottom of the water installed and also in the correct orientation. To this end, the fastening points, such as attachment eyes or hooks, directed for the anchor cable(s) towards the sinking elements to the solar park's anchor boats. All of this must be carried out from a floating device 20. A submerged element 10 is shown in the figures, that is an assembly of a driving device 14 and one not shown in the figures ground anchor, where the driving device 14 is designed for insertion into the soil of the ground anchor, whereby the driving device 14 is attached to two hoisting cables 24, 25; and where the underside 16 of the driving device is designed for receiving of a ground anchor. The ground anchor is fixed in a fixed orientation and connected to the driving device 14 such that the orientation of the driving device 14 is equal to the orientation of the ground anchor. The floating structure 20 is equipped with a hoisting boom 22, which is permanently attached. with the floating device 20, and where the hoisting boom 22 extends into the longitudinal direction Y of the floating installation. With a fixed hoisting boom 22, it is possible immersion element 10 are positioned and oriented by moving and rotating the floating device 20 or by moving the floating setup 20 and orienting the sinking element 10 by rotating the sinking element 10 using a swivel element or slewing ring. The hoisting boom 22 of the floating installation 20 is equipped with two parallel hoisting cables. 24, 25, each of which is attached to the sinking element 10, in the figures the driving device 14, where the attachment points 12, 13 of both hoisting cables 24, 25 on the sinking element 10 lie at a distance from each other in at least the width direction X of the submersible element and / or of the floating device 20. As a result, it remains sinking element 10 always fixedly oriented with respect to the hoisting boom 22 and thus with respect to relative to the floating installation 20, even when the sinking element 10 to the the bottom of the water is moved, and the sinking element 10 after placement on the bottom have the orientation of the floating structure 20. Due to the floating structure to bring and keep 20 in the correct position and orientation, the sinking element will also assume the correct position and orientation. The method includes the step of orienting. of the sinking element 10 by rotating the sinking element about a vertical axis for placement on the bottom of the water. In the configuration shown, the two parallel hoisting cables are 24, 25 attached to two winches 40, 42, where the winches are mounted at the end 28 of the hoisting boom 22, which end 28 is attached to the floating device 20, and where the hoisting cables 24, 25 are guided over the hoisting boom 22 to the head 26 of the hoisting boom 22. In an alternative embodiment, the two parallel hoisting cables can be 24, 25 are attached to two winches, which are mounted in the head 26 of the hoisting boom 24. The two winches in the head 26 or at the end 28 of the hoisting boom 22 can be equipped with a winch drum. In the configuration shown, head 26 of hoisting boom 22 is equipped with two fixed hoisting pulleys 30, 31 for both hoisting cables 24, 25, preferably lie rotary shafts 32, 33 of the hoisting pulleys 30, 31 aligned in the width direction X of the floating installation 20. In a first example, the method includes the step of orienting the sinking element 10 by rotating the floating device 20 in the water. To the to correctly position and / or orient floating installation 20, the position of the floating installation monitored, preferably using GNSS, such as a GPS tracker, preferably with a correction signal. Because it sinking element 10 has a fixed orientation with respect to the floating installation 20, can by rotating the floating device the sinking element 10 on and with the parallel hoisting cables 24, 25 in the desired orientation on the bottom of the water be applied. In a second example, the method includes the step of orienting the sinking element 10 by rotating the sinking element 10 with respect to the hoisting cables 24,25. In particular, when there is little maneuvering room on the water is for the floating installation 20, the hoisting cables 24, 25 are connected to a hydraulic and / or electric swivel element or slewing ring, where the hydraulic and / or electric swivel element or the slewing ring is provided between hoisting cables 24, 25 and the driving device 14 or between the driving device 14 and the ground anchor, and where the step of rotating the sinking element 10 the swiveling includes of the sinking element 10 around a vertical pivot axis relative to the hoisting cables 24, 25. The head 26 of the hoisting boom 22 in the figures is equipped with hose pulleys 34 for one or more hydraulic hoses or electrical cables 35 provided on the hose pulleys 34, where one or more hydraulic hoses or electrical cables 35 are configured for controlling and operating the drive device 14, to the to drive a ground anchor into the soil and then be able to disconnect it from the driving device 14. Figures 1 and 2 show a 44 drum reel for recording and coiling of one or more hydraulic hoses or electrical cables 35. In an alternative method, the sinking element 10 can be a concrete block or other be an anchor body that must be driven to the bottom of the water without a propulsion device installed. The attachment points 12, 13 of both hoisting cables 24, 25 on the concrete block as sinking element 10 are also spaced apart in at least the width direction X of the sinking element and / or of the floating device 20. The in this way the concrete block also remains fixedly oriented relative to the hoisting boom 22 and the floating structure, so that the concrete block is also correctly positioned and orienting the floating structure 10 in the desired position and orientation to the the bottom of the water can be installed.

Claims

1. A method for positioning and orienting a sinking element (10) for placement on and / or in the bottom of a body of water of the sinking element, using: - a floating installation (20) suitable for carrying out work on the water, the floating installation (20) includes a hoisting boom (22) to which a hoisting cable (24) is attached; - a sinking element (10), such as a concrete block or a ground anchor, which with the hoisting cable (24) can be moved vertically upwards or to down to the bottom of the water; where the method includes the steps of: - positioning the floating installation (20), so that it sinking element (10) is at a desired position above or in the water positioned; with the characteristic that the hoisting boom (22) is equipped with two parallel hoisting cables (24, 25), each of which attached to the sinking element (10), whereby the attachment points (12, 13) of the both hoisting cables (24, 25) on the sinking element (10) are spaced apart at least the width direction (X) of the sinking element and / or of the floating device (20), where the method furthermore includes the step of: - orienting the sinking element (10) by rotating the sinking element (10) around a vertical axis for placement on the bottom of the water.

2. The method according to claim 1, whereby the two parallel hoisting cables are attached to two winches, whereby the two winches are mounted in the head of the hoisting boom.

3. The method according to claim 1, whereby the two parallel hoisting cables are attached to two winches (40, 42), with the winches attached to the end (28) of the hoisting boom (22), which end is attached to the floating device (20), and where the hoisting cables (24, 25) are guided over the hoisting boom (22) to the head (26) of the hoisting boom (22).

4. The method according to conclusions 2 - 3, where the two Iers are provided in an egg drum.

5. The method according to conclusion 3 or 3 with 4, where the heading (26) of the hoisting boom (22) is equipped with two fixed hoisting pulleys (30, 31) for both hoisting cables (24, 25), preferably the pivot axes (32, 33) of the hoisting pulleys lie in each other's extended in the transverse direction (X) of the floating installation (20).

6. The method according to conclusions 1 - 5, whereby the orientation step of the sinking element (10) further includes: the rotation in the water of the floating layout (20).

7. The method according to one of the preceding conclusions, whereby the steps of positioning and / or orienting further includes monitoring of the position of the floating installation (20), preferably using of GNSS, such as a GPS tracker.

8. The method according to one of the preceding conclusions, whereby the step orienting the sinking element (10) further involves: rotating the sinking element (10) in relation to the hoisting cables (24, 25), in particular are the hoisting cables (24, 25) connected to a hydraulic and / or electric swivel element or slewing ring, where the hydraulic and / or electric swivel element or the slewing ring is provided between the hoisting cables (24, 25) and the sinking element (10), and where the step of rotating the sinking element (10) involves swiveling the sinking element (10) to a vertical pivot axis relative to the hoisting cables (24, 25).

9. The method according to conclusions 1 - 8, whereby the sinking element (10) a is an assembly of a driving device (14) and a ground anchor, where the driving device (14) is designed for inserting the ground anchor into the soil, whereby the driving device (14) is attached to the hoisting cables (24, 25); and where the ground anchor is fitted under / on the drive device (14).

10. The method according to claim 8 with 9, whereby the hydraulic and / or electric swivel element or the slewing ring is provided between the hoisting cables (24, 25) and the driving device (14) or between the driving device (14) and the ground anchor.

11. The method according to conclusion 9, where the head (26) of the boom (22) is equipped with hose pulleys (34).

12. The method according to claim 11, whereby one or more hydraulic hoses or electrical cables (35) are provided on the hose pulleys (34), where the one or more hydraulic hoses or electrical cables (35) are equipped for the controlling and operating the drive device (14).

13. The method according to conclusion 12, where a drum reel (44) is equipped for receiving and coiling one or more hydraulic hoses or electrical cables (35).

14. The method according to one of the preceding conclusions, whereby the hoisting boom (22) is permanently connected to the floating device (20), and where the hoisting boom (22) extends in the longitudinal direction (Y) of the floating installation.

15. Floating installation (20) for carrying out the working method for the positioning and orienting a sinking element (10) for the purpose of placing it on the placing and / or anchoring the sinking element (10) at the bottom of a body of water according to conclusion 1 13, where the hoisting boom (22) is permanently connected to the floating device (20), and where the hoisting boom (22) extends in the longitudinal direction (Y) of the floating facility, and where the hoisting boom (22) is equipped with two parallel hoisting cables (24, 25), which each are attached to the sinking element (10), where the attachment points (12, 13) of the two hoisting cables (24, 25) on the sinking element (10) at a distance from each other lie in at least the width direction (X) of the sinking element and / or of the floating installation (20).

16. Floating installation within the meaning of claim 15, where the hoisting cables (24, 25) are connected to a hydraulic and / or electric swivel element or slewing ring, where the hydraulic and / or electric swivel element or slewing ring is provided between the hoisting cables (24, 25) and the driving device (14) or between the driving device (14) and the ground anchor, and where the hydraulic and / or electric swivel element or slewing ring is designed to swivel the drive device (14) or the ground anchor to a vertical pivot axis relative to the hoisting cables (24, 25), in order to connect the to orient the driving device (14) connected ground anchor.

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