• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Wave energy converter (100) comprising a floating body (101) and an acceleration tube (102) attached thereto which forms a working cylinder (103). Upper and lower openings of the acceleration tube (102) allow water flow between the working cylinder (103) and the body of water (104) in which the acceleration tube (102) is at least partially immersed. The wave energy converter (100) has a working piston. (105) movable back and forth in the working cylinder (103) and at least one energy converting device (107) which absorbs energy from the movements of the working piston (105) relative to the floating body (101) and furthermore a mooring system (108) comprising at least one on the floating body (101) mounted fastener. (110) for fixing at least one mooring line (111) to the buoyancy body (101), the mooring line (111) comprising at least a first rope portion (112) for fixing to the fastening device (110) on the buoyancy body, a second rope portion (113) for fixing at an anchor (114), and an intermediate rope portion (115), attached between the first (112) and second (113) rope portions, which has a substantially greater elastic extensibility than the first rope portion (112). (Figure 1)
    公开号:SE1530045A1
    申请号:SE1530045
    申请日:2015-04-02
    公开日:2016-10-03
    发明作者:Alm Filip
    申请人:W4P Waves4Power Ab；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The present invention relates to a wave energy converter comprising a floating body, an acceleration tube which hangs in and is attached to the floating body and forms a working cylinder between an upper and a lower end of the same, upper and lower working openings. is movable back and forth in the working cylinder, an energy conversion arrangement comprising at least one energy absorbing device which absorbs the movements of the working piston relative to the floating body due to wave motions, and a mooring system arranged to hold the wave energy converter at the desired anchoring position. of at least one mooring line at the floating body.
    BACKGROUND OF THE INVENTION Wave motions in oceans and large lakes are a significant source of energy that can be utilized by extracting energy from the waves using wave power generators, also called wave energy converters, which are placed or anchored in places with suitable wave conditions.
    A number of different types of wave energy converters for the extraction and conversion of wave energy into electrical energy are already known. An example is so-called linear generators which, via a line or other connecting means, can transmit vertical movements of a floating body caused by wave motions to one-way and reciprocating motion of a generator coil or rotor of a single-line generator anchored at the sea or seabed. The reciprocating motion of the generator coil / rotor in turn generates electric current in the windings of an adjacent stator of the bottom anchor line linear generator.
    Another includes a prior art type of wave energy converter wave energy absorbing float with an energy acquisition and conversion system that may be located on the seabed. The floating body is connected to a winch via a winch cable. The winch and winch wire interconnect the floating body with a reference body below the water surface, such as an anchoring platform below the water surface, an anchor lying on the bottom, or another anchoring device. When the wave forces cause the floating body to move in the longitudinal direction of the winch wire, the winch is forced to rotate, after which the generated rotational movement of the winch shaft can be converted into electricity by means of an energy conversion system.
    Thus, in the two above-mentioned types of prior art wave energy transducers, the upward and downward movements of the floating body due to the longitudinal reciprocating motion of a mooring line, wire or other connecting means interconnecting the floating body with an anchor or another fixed anchorage point below water. In order to obtain a high efficiency of these wave energy converters, it is essential that as large a proportion of the movement of the floating body as possible can be transmitted directly to reciprocating movement in the longitudinal direction of the connecting member, which can be picked up via the linear generator and winch and converted into electricity.
    A completely different type of previously known wave energy converter is instead based on relative movement between, on the one hand, a floating body and a so-called acceleration tube attached to it and, on the other hand, a working piston which is reciprocating in the acceleration tube, the relative movement being caused by wave motions in the body of water where the wave energy converter is anchored by means of one or more mooring lines, in order to extract wave energy. The working piston movement can be pumped, double-acting hydraulic pump or a hose pump, a hydraulic motor is used to drive, for example, one such as a / and a hydraulic turbine of an energy conversion system arranged in or adjacent to the float to generate electricity that can be transferred to an energy storage or grid .
    In the above-mentioned type of wave energy converter with acceleration tube, it is thus irrelevant to the efficiency whether as large a proportion as possible the movement of the drain body can be transmitted directly to reciprocating movement in the longitudinal direction of the mooring line or not. In fact, such a wave energy converter with acceleration tube can in principle function without any mooring line at all, even if this is not recommended, both for safety reasons and because of course you want to be able to keep the wave energy converter at a desired anchoring position where the wave conditions are as good as possible for wave energy recovery.
    The prior art mooring systems for road energy converters with acceleration tubes have generally comprised fastening loops, mounting brackets and / or shackles for mooring lines arranged on the road energy converter, the mooring lines being intended to join the end of the anchor to the path of the winding converter.
    In practical experiments, it has been found that the previously used mooring systems of road energy converters with acceleration tubes are associated with problems which can adversely affect the pourability, function, reliability and efficiency of such road energy converters. A problem with the prior art mooring systems of road energy converters with acceleration tubes is that they often fail to pour the residual energy converter in the desired proximity of the selected anchorage position at varying wind conditions and water levels, which can lead to a poorer efficiency of the wave energy converter. in the worst case and even lead to breakdowns if the road energy converter gets too close to a burning zone due to strong winds and / or variations in water levels.
    Another problem with the previously known mooring systems is that they do not keep the mooring lines taut when high roads or swells pass the by-pass energy converter, which can lead to a mooring line tying a knot on itself or laying in a loop around and possibly damaging the road energy converter's floating body. deep road valley, which can lead to operational accidents, increased need for maintenance and reduced efficiency of the wave energy converter.
    Another problem with the previously used mooring systems of road energy converters with acceleration tubes is that their fastening devices pre-mooring lines on the floating body have a design which allows sliding between the mooring lines and the fastening devices, e.g. between a mooring line and a single loop, jumper, slippery and / or a cleat or shackle, when the floating body is thrown around by road movements and thus causes a heavy wear on the mooring lines, resulting in an increased need for maintenance work replacement of mooring lines and in the worst case can lead to line breakage risk of damage to or loss of the wave energy converter.
    Additional problems solved by the present invention will become apparent from the following description.
    SUMMARY OF THE INVENTION A first object of the present invention is to provide a single-wave energy converter with acceleration tubes and an improved mooring system with better conditions to be able to keep the wave energy converter in desired proximity to a selected optimal anchoring position and which further reduces the mooring risk. deep wave valley and knots on itself or lies in a loop around and possibly damages the wave energy converter's floating body.
    This first object is achieved with a wave energy converter according to claim 1, which comprises a floating body, an acceleration tube which hangs in and is attached to the floating body and has an upper end adjacent to the floating body and a lower end spaced from the floating body, a section of the acceleration tube forming a working cylinder. the upper and lower ends, upper and lower openings of the acceleration tube to allow substantially unobstructed flow of water between the working cylinder and a mass of water in which the acceleration tube is at least partially submerged when the wave energy converter operates due to wave motions, a working piston at least one energy absorbing device which absorbs the movements of the working piston relative to the floating body as a result of said wave movements and a mooring system which is arranged to hold the wave energy converter at a desired anchoring position and comprises at least one float-mounted fastening device for fixing at least one mooring line to the floating body, said mooring line comprising at least one front line portion for fixing to the fastening device on the floating body, a second rope portion pre-fixing at an anchor which is deployed or intended to be deployed between the first and second line portions, which have a substantially greater elastic extensibility end of the first line portion to allow the mooring line, after deployment of the anchor, fixation of the second line portion at the anchor, prestressing of the mooring line and fixing of the first line portion to the float body, is held short by elastic the intermediate line portion when the wave energy converter operates as a result of said wave motions.
    Due to the fact that the mooring line is prestressed, it will hold the floating body closer to the desired anchoring position than a non-prestressed line could do, which is advantageous because the wave energy converter according to the invention is thereby kept close to the selected optimal position for efficient wave energy recovery. ending up in a burning zone is minimized. Thanks to the fact that the mooring line after pre-tensioning it is kept taut by elastic elongation or shortening of the intermediate line portion near the wave energy converter works due to wave movements also reduces the risk of the mooring line becoming slack in a deep wave valley and tying a knot on itself. .
    A second object of the present invention is to provide single-wave energy converters with acceleration tubes and an improved mooring system comprising at least one fastening device on the floating body which, if desired, enables a simple adjustment of the mooring line laid length in relation to the water depth and which facilitates pre-tensioning. good conditions to be able to reduce the need for inspection and maintenance work for changing mooring lines and reduce the risk of line breaks due to wear and tear on the mooring lines.
    This second object is achieved with a wave energy converter according to claim 5, in which the fastening device mounted on the floating body comprises a winch which is arranged to be able to winch a section of the first rope portion at the bias of fixing the first mooring line and the rope portion at the floating body.
    Thanks to the provision of a fastening device comprising a winch mounted on the floating body, a simple adjustment of the length of the mooring line is made possible and the prestressing of the mooring line is greatly facilitated. Thanks to the provision of such a winch which can be provided with a rotatable drum or shaft around which the front line portion runs with a soft curvature while being clamped against the surface of the drum or shaft by the tension in the prestressed mooring line and with a locking device which after activation prevents rotation of the drum or shaft and thereby maintains the prestress, a very gentle and almost abrasion-free abrasion free breaking points, the first line section at the floating body after the prestressing with the aid of the winch, which provides very good conditions for being able to increase the durability of the mooring line and thereby reduce the need for controls and maintenance and reduce the risk of the road energy converter wears itself out and is damaged or in the worst case completely lost.
    Additional objects and advantages of the invention and the features which make it possible to achieve these objects and advantages will become apparent from the following description.
    BRIEF DESCRIPTION OF THE INVENTION The invention will be described in the following by a number of different embodiments with reference to the accompanying drawings, in part in road energy converters according to a preferred embodiment of the invention as Figure 1 is a schematic side view, section, of a single mooring , fixed to a fastening device on the buoyancy body of the road energy converter and to a deployed anchor, remains at a desired anchoring position while operating as a result of road movements in a body of water in which the accelerator tube of the road energy converter is partially submerged, and Figure 2 shows a principle sketch of a fastening device. fixed near the winch.
    DESCRIPTION OF EMBODIMENTS OF THE INVENTION In the following, a number of embodiments of a path energy converter according to the invention will be described in more detail with reference to the appended figures 1 and 2.
    The path energy converter 100 comprises a floating body 101 which may be of any suitable type and design for the purpose. An acceleration tube 102 hangs in and is attached to the float body 101 and has an upper end adjacent the float body and a lower end spaced from the float body, a section of the acceleration tube 102 forming a working cylinder 103 between the upper end and the lower end. Road energy converters with acceleration tubes are well known to a person skilled in the art, for example from patents SE 508 307 and SE 508 308. Upper and lower openings of the acceleration tube 102 allow substantially unobstructed water flow between the working cylinder 103 and a body of water 104 in which the acceleration tube due to wave motions. A working piston 105 is arranged in the working cylinder 103, which is movable back and forth in the working cylinder 103.
    The upper and lower openings of the acceleration tube 102 may be provided in different ways depending on the embodiment. In a particularly preferred embodiment of the wave energy converter 100, an upper opening is provided in the form of the open end of the acceleration tube 102 at the top which opens into the atmosphere above the top of the float, while a lower opening is provided in the form of the open end of the acceleration tube 102 where the water surface is approximately submerged. . However, embodiments of the invention are also conceivable in which one or both of the upper and lower openings, respectively, are provided in the form of one or more suitably dimensioned holes which are arranged in the circumferential surface of the genome acceleration tube in suitable places.
    The wave energy converter 100 further comprises an arrangement of energy conversion 106 comprising at least one energy absorbing device 107 which absorbs energy from the movements of the working piston 105 relative to the floating body 101 as a result of said wave movements. The energy conversion arrangement 106 with the energy receiving device 107 (or devices) may have different designs and constructions in different embodiments of the wave energy converter 100 according to the embodiment, as indicated in Fig. 1, comprising a double-acting piston pump invention. The energy absorbing device may in a 107 which is located in the floating body 101 and connected to the working piston 105 via a single piston rod, but in another embodiment (not shown in the figures) could instead comprise a rack, or in yet another embodiment (not shown) may comprise a pair of so-called hose pumps which are elastically extensible and connected between on the one hand opposite sides of the working piston and on the other hand the floating body and / or the acceleration tube. However, the wave energy converter 100 according to the present invention is not limited to any particular type of acceleration tube 102 and / or to any particular type of arrangement energy conversion 106 or any particular type of energy absorbing device 107.
    It is advantageous that the wave energy converter 100 according to the invention further comprises an arrangement for so-called maximum force relief, in order to reduce the risk that the working piston 105, the energy absorbing device 107 or other components of the wave energy converter 100 are damaged by the forces from excessive wave motions. Such an arrangement may, as indicated in FIG. 1, is advantageously provided in that the working cylinder 103 is arranged in the inside acceleration tube 102 and formed with a shorter length and smaller outer and inner diameter than the acceleration tube 102, and that the working piston 105 is formed with an outer diameter which fits inside the inner diameter of the working cylinder 103 and has a maximum stroke length. is longer than the length of the working cylinder 103 and shorter than the length of the acceleration tube 102.
    In embodiments where the wave energy converter 100 is provided with a suitably designed and dimensioned arrangement for maximum power relief such as the wave peak wave energy converter 100 to cause the buoyancy body 101 to rise sharply and described above, an oversize passing column will cause the water column inside the accelerator tube 102 to sink. the sinking water column in the acceleration tube 102 will press the working piston 105 to a lower end position outside the working cylinder 103 so that an open passage for the sinking water column inside the accelerating tube 102 is formed between the working piston 105102 larger below the working cylinder 103 and kept open to let through water until acceleration. large wave crest has passed. If instead an excessive wave valley passes the wave energy converter 100, in an analogous manner, the wave valley 101 will cause the buoyancy body 101 to sink sharply and at the same time the small water column inside the accelerator tube 102 will rise sharply upwards relative to the float body 101. 105 to an upper end position outside the working cylinder 103 so that an open passage for the rising water column 102 is formed 105 smaller outer diameter of the acceleration tube 102 above inside the acceleration tube between working piston outer diameter and working cylinder 103 and kept open to let water through until the oversized wave valley has passed. further comprises a wave energy converter 100 according to the mooring system 108 which the invention is arranged to hold the wave energy converter 100 at a desired anchoring position 109 and comprises at least one fastening device 110 mounted on the float body for fixing at least one mooring line 111 to the float body 101. The mooring system according to the invention or multi-mooring lines and one or more fasteners for the lines, depending on the size of the current wave energy converter in question. At least one mooring line 111 of the wave energy converter 100 according to the invention comprises at least a first line portion 112 for fixing the attachment device 110 to the floating body 101, a second line portion 113 for fixing at anchor 114 which is deployed or intended to be deployed at anchor position 109 and an intermediate line portion 115, and second 113 the rope portions, which have a substantially greater elastic extensibility than the first rope portion 112 to allow the mooring rope 111, after deployment of the anchor 114, fixing the second rope portion 113 to the anchor 114, biasing the mooring rope 111 and fixing the first rope portion 112 to the float. , is kept taut by elastic elongation or shortening of the intermediate line portion 115 when the wave energy converter 100 operates as a result of said wave motions.
    By providing the dry energy line 111 of the wave energy converter 100 with a front line portion 112 for fixing to the fastening device 110 on the floating body 101 and by this first line portion 112 being attached at one end to an intermediate line line portion 115 having a substantially greater elastic extensibility than the front line portion 112. intermediate line portion 115 optimally extensibility properties to ensure that the mooring line 111 is always held tight when the wave energy converter 100 operates, while at the same time the properties of the first line portion 112 can be optimized for fixing the front line portion 112 to the fastener 110 on the float body 101. Thanks to such a design of the mooring line because the mooring line 111 becomes slack during large wave movements and strikes a knot on itself or gets stuck on the floating body and the risk of the mooring line 111 tangling, jamming, being damaged and / or falling off when fixing to the fastening device 110 on the floating hook ppen 101 minimerassamultime.
    In an advantageous embodiment of the wave energy converter 100 according to the invention, the first line portion 112 has an elastic extensibility which allows a maximum elongation thereof of at most 5% at maximum calculated force in the mooring line (ie at maximum expected current and wave force in the same direction), while the intermediate line portion 115 has an elastic extensibility which allows a maximum elongation thereof of at least 50% due to said wave motions. Such a relatively low elastic extensibility of the first flap portion 112 may reduce the risk of the first flap portion 112 becoming entangled or jammed upon fixation thereof at the fastener 110, while such a high elastic extensibility of the intermediate flap portion 115 makes it possible to obtain sufficiently elastic elasticity of mooring line111 already using a relatively short intermediate line portion115, which can be an advantage, among other things from a material cost point of view.
    In a preferred embodiment of the invention, the intermediate rope portion 115 has an elastic extensibility and a length which are adapted to allow a maximum elastic elongation of the intermediate rope portion 115 which is at least 20 meters, due to said wave movements. By designing the intermediate rope portion 115 with a maximum elastic extension which is at least 20 meters, it is ensured that the mooring line 111 post-tension will be able to be kept taut even under conditions where the height difference between wave peaks and wave valleys amounts to 15-20 meters. Such wave conditions are not uncommon in places suitable for the efficient extraction of wave energy.
    In an advantageous embodiment of the present invention, the first line portion 112 has a substantially smaller outer diameter and / or largest circumferential end between the line portion 115. A smaller diameter of the first line portion 112 may facilitate threading through and / or fixing the same attachment device 110, which may be a advantage, among other things, in view of the time required for laying or maintaining the wave energy converter 100. Smaller diameter of the first line portion 112 can also enable the fastening device 110 to be made smaller and more compact, which can be an advantage in terms of space requirements, material consumption and weight.
    The first line portion 112 may advantageously have an outer diameter in the range of 20 - 80 mm and / or a largest circumference in the range of 2.5 - 10 inches. By selecting suitable materials for the first rope portion 112 and an outer diameter and / or largest circumference within the above-mentioned ranges, a sufficient strength can be obtained of the first rope portion 112 without the fastening device 110 having to be dimensioned larger than necessary.
    In certain embodiments of the wave energy converter 100 according to the invention, the first rope portion 112 may consist of a steel wire. Such a steel wire is relatively inexpensive and may have an outer diameter and / or largest circumference in the lower part of the above-mentioned ranges, which is advantageous from a cost point of view and to keep the dimensions and weight of the fastening device 110 here.
    In preferred embodiments of the wave energy converter 100 according to the invention, the first rope portion 112 instead consists of a rope or a braided rope of one or more synthetic polymeric materials. Examples of suitable synthetic polymeric materials are polyester and HMPE, whereby high breaking strength and E-modulus synthetic materials, such as HMPE, are particularly advantageous because the first flap portion 112 can then be made easier to handle when laying the wave energy converter 100 and fixing the first flap portion 112 to the fastener 110.
    In embodiments where the first rope portion 112 consists of a rope or braided synthetic polymeric material, it is particularly advantageous if at least one section of the first rope portion 112, which lies above or near the water surface 104 when the wave energy converter operates, comprises an enclosing material layer or an enclosing coating of a UV-protective material, this to minimize the risk of the polymer material being degraded by sunlight.
    In a preferred embodiment of the wave energy converter 100 according to the invention, the fastening device mounted on the floating body 101 comprises a winch 110 which is arranged to be able to winch a section of the first line portion 112 at the bias of the mooring line 111 and fix the first line portion 112 to the floating body 101. A fastening device 101. a winch 110 mounted on the buoyancy body 101 can, if desired, enable a simple adjustment of the length of the mooring line 111 in relation to the water depth when laying the wave energy converter 100 and also greatly facilitates the biasing of the mooring line 111. The winch on the buoyancy device needs instead For example, a suitable separate drive device may be connected when necessary to drive the drum or applied to the first line portion to drive the winch rotation.
    The winch 110, or winches, of the wave energy converter 100 in the preferred embodiment is preferably arranged to be able to winch at least 8 meters of the first rope portion 112 at the bias of the mooring line 111. Such a capacity of the winch 110 enables a bias of the mooring line 111 which is sufficient for most conditions, without the winch having to be made larger and heavier than is absolutely necessary.
    The winch 110, or winches, of the wave energy converter 100 in the preferred embodiment preferably comprises a rotatable drum A or shaft (see Figure 2) around which at least one full turn B of the first line portion 112 is arranged to run during the winch. In a particularly preferred embodiment of the wave energy converter 100 according to the invention, the winch 110 comprises a locking device (not shown in the figures) which is arranged to, after biasing the mooring line 111, be able to activate and block the rotation of the rotatable drum A or shaft while at least one full turn Bav the first line portion 112 is still rolled around the rotatable drum drive shaft. A fastening device in the form of a winch 110 with such a locking device is very advantageous compared to several of the previously known fastening devices used on floating bodies, such as fastening loops, shackles, stirrups, cleats, slips and the like, since the rope turn B or the rope turns of the first rope portion 112 running around the winch 110 drum A or shaft with a soft bend without any abrasion-exposed sharp breakpoints will be clamped against the surface of the drum A or the shaft of the tension in the biasing mooring line 111 while the locking device after activation prevents rotation of the drum or shaft and thereby maintains the tensioning. the floating body 101.
    In the prior art buoyancy fasteners of the type in question, the rope often passes through a fork or similar element where the rope direction changes some distance from the rope's attachment point at the float, leading to the attachment piece between the attachment point and the hanger changing length and the rope will slide against the cleat where the contact force is high and strongly worn. By providing one or more fasteners comprising a winch 110 from which the first rope portion 112 extends directly into the body of water 104 where the wave energy converter is anchored, the wave energy converter in the preferred embodiment can overcome this specific problem. A further advantage of fasteners comprising a winch is that a short piece of rope can be released or winched within a certain local wear would nevertheless occur at some point on the first rope portion, so that any further wear occurs at an unbroken place of the rope. In another advantageous embodiment of the wave energy converter 100 according to the invention, a bollard C or similar device (see Figure 2) is fixed to the buoyancy body 101 in the vicinity of the winch 110 to allow stable attachment of a section of the first rope portion 112 passed through the winch biasing of the mooring line 111. Such a bollard C or similar device can be used for collecting or fixing loops of the front line portion winched in during length adjustment or biasing of the mooring line, or as an additional safety device which still fixes the mooring line at the floating body in the event of a winch lock device or the winch itself. In embodiments where the winch lacks the locking device described above, such a bollard or similar device may be used to fix a section of the first rope portion that has been winched in, while at least one full turn of the first rope portion 112 is still rolled around the still rotatable drum or shaft.
    The winch (or winches) of the wave energy converter according to the preferred embodiment is particularly advantageous a hand-crank winch 110. Such a manual winch is advantageous because it is compact, light and reliable and does not require any electricity or access to other energy supply for laying, maintaining or adjusting. the wave energy converter 100.
    The preferred embodiment of the invention where the wave energy converter 100 comprises a fastening device in the form of a winch 110 for the mooring line 111 enables a very gentle and almost abrasion-free fixing of the first line portion 112 to the floating body 101 after the prestressing by means of the winch, which considerably increases the durability. checks and maintenance and reduces the risk of the wave energy converter tearing and being damaged or, in the worst case, completely lost.
    The second rope portion 113 of the mooring rope used in the wave energy converter 100 according to the invention may comprise a steel wire, but preferably comprises a rope or a braided rope of a synthetic polymer material. To reduce the risk of corrosion and / or abrasion against the anchor 114 or against objects in the water in the vicinity of the anchor, the second line portion 113 may in an advantageous embodiment also comprise an enclosing material layer or an enclosing coating of a corrosion and / or abrasion protection material, which may be any suitable type of solid, vaporous, plasma or liquid material which imparts such protective properties and which can be applied to the second linen portion either during manufacture or in connection with assembly or laying thereof.
    The anchor 114 at which the floating body 101 of the wave energy converter 100 according to the invention is moored may be provided with a fastening loop, a cast-in tube or other fastening means (not shown in the figures) which are arranged to allow the fixation of the second rope portion 113 at the anchor 114. 120 of the second rope portion 113 through the fastening means or means to the anchor to form a loop around the fastening means or means and then to make a knot, split or seam to fasten the loop together and fix the second rope portion 113 to the anchor 114.
    In a particularly advantageous embodiment of the wave energy converter 100 according to the invention, the anchor 114 is provided with fastening means which are adapted to allow the fixing of the second rope portion 113 to the anchor 114 to take place partially or completely by means of a remote-controlled vessel (ROV). Such an adaptation of the fastening means may consist, for example, in that the anchor is provided on its upper side with a stably mounted fastening means, similar to an oversized "carabiner" (not shown in the figures), with a spring-loaded yoke opening into which the remote control vehicle can force a finished spliced, knotted or sewn loop (not shown) at the end 120 of the second rope portion 113, after which the spring load can return the yoke opening to the closed position so that the loop of the other rope portion 113 is fixed to the anchor 114 via the closed shackle.
    In a preferred embodiment of the wave energy converter 100 according to the invention, the intermediate rope portion 115 of the mooring rope 111 comprises at least one elastic rope member of a resilient rubber and / or synthetic rubber material, which in a particularly advantageous embodiment may be formed as a cable with a homogeneous rubber core and a rubber core. a rubber cover that encloses the cord.
    The intermediate rope portion advantageously comprises an elastic stretching unit 115 comprising a plurality of elongate substantially parallel elastic rope members, such as for instance rubber cables, held together by end fittings 116, 117 arranged at the respective ends of the elastic rope members. Various types of such elastic stretching units intended for use in mooring deflectors and other floating bodies are known per se and are commercially available.
    A problem with the previously used mooring systems is that their fasteners on the float and any splicing means between different liner parts usually comprise a plurality of metal elements provided with a corrosion-protective layer, but that this corrosion-protective layer is damaged over time when interconnected metal elements wear against each other and / or. eg a rigging wire) when the float is thrown around deflections so that the oxygen-rich and often salt-laden atmosphere and the water near the float can cause corrosion on the metal elements, which results in an increased need for maintenance work to replace metal elements and in the worst case can lead to material breakage of metal elements. and risk of damage to or loss of the road energy converter. To reduce the risk of such corrosion problems occurring in the road energy converter according to the invention, the fastening device on the often water-, oxygen- and salt-exposed floating body therefore preferably comprises a winch which enables slippage-free and thus almost abrasion-free fixation of the first line of floating body. any metal elements ent.
    In a particularly preferred embodiment of the invention, one end fitting 117 of the elastic stretching unit 115 is provided with a fastening loop or other fastening means (not shown in the figures) which is arranged to allow one end 119 of the second rope portion 113 to pass through the fastening loop or fastener and be knotted, spliced or sewn together into a loop around the same to secure one end bracket 117 of the elastic strain unit to one end 119 of the second rope portion 113, the second end bracket 116 of the elastic strain unit 115 being provided with a rotation-fixed wheel, preferably of plastic material, arranged to allow one end 118 of the first rope portion 112 is laid round and wound, spliced or sewn together into a loop around the wheel to secure one end of the first rope portion 112 to the second end fitting 116 of the elastic strain unit 115. The provision of such a wheel may allow sliding and almost abrasion-free attachment of the first linen portion 112 and the ela the elastic strain unit, or the intermediate line portion 115, which can minimize the risk of corrosion attack due to abrasion on any joint, especially metal elements which are part of and in a corrosion-prone position near the water surface where the water can have both high salinity 16 and oxygen content. An elastic stretching unit 115 with such a design fastening means of the end fittings 117, 116 for fastening the second rope portion and for attaching the first rope portion to the elastic stretching unit 115 further reduces the risk of the ends 119, 118 of the first and second rope portion being moved due to of abrasion against its respective fastener when the wave energy converter 100 moves as a result of said wave motions.
    In another advantageous embodiment (not shown in the figures) the wave energy converter 100 according to the invention, one or more electric cables for transmission of electric power are arranged to run along the mooring line 111 in a longitudinally extensible manner from the floating body 101 to a single cable deflection point (not shown in the figures below). the line section 115. The power cable (s) may be arranged in ice loops or in a helical shape to be extended and shortened together with the intermediate line section 115 when the wave energy converter 100 is operated and can be held at the mooring line 111 by means of loosely seated rubber straps or other suitable means. shown in the figures). Thanks to the fact that the electric cable (or cables) gently follows the movements of the buoyancy body 101 and the upper part of the mooring line 111 in the water-exposed mass of water near the water surface, the risk of abrasion and damage to the electric cable (s) is minimized. After the deflection point below the intermediate line portion 115, which is in a relatively calm body of water, the power cable (or cables) may run further to the side to a connection point of another unit (not shown in the figures) located either at the bottom, below the water surface, above the water surface , or on land.
    The present invention has been described above with the aid of a number of different embodiments and with reference to the accompanying drawings. It must be understood, however, that the invention is not limited to the described embodiments and to what is shown in the drawings, without considering other embodiments. within the scope of the invention as defined by the appended claims.
    权利要求:
    Claims (18)
    [1]
    A wave energy converter (100), comprising a floating body (101), an acceleration tube (102) which hangs in and is attached to the floating body (101) and has an upper end adjacent the floating body and a lower end spaced from (102) working cylinder (103). ) between the upper end and the lower end, the floating body, a section of the acceleration tube forming upper and lower openings of the acceleration tube (102) to allow substantially unobstructed water flow between the working cylinder (103) and a body of water (104) in which the acceleration tube (102) is at least partially submerged when the wave energy converter operates as a result of wave motions, a working piston (105) reciprocating in the working cylinder (103), an energy conversion arrangement (106) comprising at least one energy absorbing device (107) which absorbs energy from the working piston (105) movements relative to the floating body (101) as a result of said wave movements and (108) at a desired anchoring position a mooring system which is arranged to hold a remains (100) (109) and comprises at least one fastening device (110) mounted on the float body (101), the wave energy converter for fixing at least one mooring line (111) to the floating body (101), characterized in that said mooring line (111) comprises at least a first rope portion (112) for fixing to the fastening device (110) on the buoyancy body, a second rope portion (113) for fixing to an anchor (114) which is deployed or intended to be deployed at the anchoring position (109) and an intermediate rope portion (115), fastened between the first (112) and the second (113) rope portions, which have a substantially greater elastic extensibility than the first rope portion (112) to allow the mooring line (111), post-placement of the anchor (114), fixation of the second rope portion (113) to the anchor ( 114), biasing of the mooring line (111) and fixing the first line portion (112) to the floating body (101) are kept tight by elastic elongation and shortening of the intermediate line pair, respectively. (115) when the wave energy converter (100) operates as a result of said wave motions.
    [2]
    Wave energy converter (100) according to claim 1, characterized in that the first line portion (112) has an elastic extensibility which allows a maximum elongation thereof of not more than 5% at 18 maximum calculated forces in the mooring line, and that the intermediate line portion (115) has an elastic extensibility which allows a maximum elongation thereof of at least 50% due to said road movements.
    [3]
    Road energy converter (100) according to claim 1 or 2, characterized in that the intermediate rope portion (115) has inelastic extensibility and a length which is adapted to allow a maximum elastic elongation of the intermediate rope portion (115) which is at least 20 meters, as a result of said road movements.
    [4]
    Road energy converter (100) according to any one of the preceding claims, characterized in that the first rope portion (112) has a substantially smaller outer diameter and / or larger circumference than the intermediate rope portion (115).
    [5]
    Road energy converter (100) according to any one of the preceding claims, (101) the fastening device comprises a winch (110) arranged to be characterized in that the winch mounted on the floating body inserts a section of the first rope portion (112) at the prestressing mooring line. (111) and fixing the first line portion (112) to the float (101).
    [6]
    Road energy converter (100) according to claim 5, characterized in that the winch (110) is arranged to be able to winch in at least 8 meters of the first rope portion (112) at the pretension of the mooring line (111).
    [7]
    Road energy converter (100) according to claim 5 or 6, characterized in that the winch (110) comprises a rotatable drum (A) or shaft around which at least one full turn (B) of the first rope portion (112) is arranged to run under winch.
    [8]
    Road energy converter (100) according to claim 7, characterized in that the winch (110) comprises a locking device which is arranged to, after biasing the mooring line (111), be able to activate and block the rotation of the rotatable drum (A) or shaft while at least one full turn (B) of the first rope portion (112) is still rolled around the rotatable drum (A) or shaft. 19
    [9]
    Wave energy converter (100) according to any one of claims 5-8, characterized in that a bollard (C) or similar device is fixed on the floating body (101) in the vicinity of the winch (110) to allow stable attachment of a section of the first line portion. (112) which has passed through the winch at the pretension of the mooring line (111).
    [10]
    A wave energy converter (100) according to any one of the preceding claims, characterized in that the first rope portion (112) consists of a rope or a braided rope of one or more synthetic polymeric materials.
    [11]
    A wave energy converter (100) according to claim 10, characterized in that at least a section of the first line portion (112), which (104) when the wave energy converter operates, comprises an enclosing material layer or a coating overlying or near the water surface of a UV-protective material.
    [12]
    A wave energy converter (100) according to any one of the preceding claims, characterized in that the second flap portion (113) comprises an enclosing material layer or an enclosing coating of a corrosion and / or abrasion protection material.
    [13]
    Wave energy converter (100) according to one of the preceding claims, characterized by elastic synthetic rubber material. in that the intermediate rope portion (115) comprises at least one rope member of a resilient rubber and / or
    [14]
    A wave energy converter (100) according to any one of the preceding claims, characterized in that the intermediate rope portion (115) comprises at least one elastic rope member in the form of a cable with a homogeneous rubber core, a cord enclosing the rubber core and a rubber casing enclosing the cord.
    [15]
    Wave energy converter (100) according to any one of the preceding claims, characterized in that the intermediate rope portion comprises an elastic strain unit (115) comprising a plurality of elongate substantially parallel elastic rope members held together by end fittings (116, 117) disposed at the elastic rope members, respectively.
    [16]
    Wave energy converter (100) according to claim 15, characterized in that the one end fitting (117) of the elastic strain unit (115) is provided with a fastening loop or other fastening means arranged to allow one end (119) of the second rope portion (113) through the fastening loop or fastener and knotted, spliced or sewn together to form a loop around the same to secure one end bracket (117) of the elastic strain unit to one end (119) of the other rope portion (113), and to the other end brackets (115) of the elastic strain unit (115) 116) is provided with a rotation-fixed wheel, preferably of plastic material, which is arranged to allow eighteen ends (118) of the first rope portion (112) to be laid around the wheel and knotted, splice seals are sewn together into a loop around the wheel to secure one the end (118) of the preamble portion (112) at the second end fitting (116) of the elastic strain unit (115).
    [17]
    A wave energy converter (100) according to any one of the preceding claims, characterized in that the armature (114) is provided with fastening means adapted to allow the fixing of the second rope portion (113) to the armature (114) takes place in part or in whole by means of of a remote-controlled craft (ROV).
    [18]
    Wave energy converter (100) according to any one of the preceding claims, characterized in that one or more electric cables for transmitting electric power are arranged to run along the mooring line (111) in a longitudinally extending manner from the floating body (101) to a cable deflection point below. the intermediate line portion (115).
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    同族专利:
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    SE541146C2|2019-04-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1530045A|SE541146C2|2015-04-02|2015-04-02|Wave energy converter with elastic mooring system|SE1530045A| SE541146C2|2015-04-02|2015-04-02|Wave energy converter with elastic mooring system|
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