EP3081701A1 - Procede et dispositif destines a l'isolation acoustique - Google Patents

Procede et dispositif destines a l'isolation acoustique Download PDF

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Publication number
EP3081701A1
EP3081701A1 EP16164761.5A EP16164761A EP3081701A1 EP 3081701 A1 EP3081701 A1 EP 3081701A1 EP 16164761 A EP16164761 A EP 16164761A EP 3081701 A1 EP3081701 A1 EP 3081701A1
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EP
European Patent Office
Prior art keywords
medium
line
drum
compressor
seabed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16164761.5A
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German (de)
English (en)
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EP3081701B1 (fr
Inventor
Bernhard Weyres
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Individual
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Individual
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Priority to PL16164761T priority Critical patent/PL3081701T3/pl
Publication of EP3081701A1 publication Critical patent/EP3081701A1/fr
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Publication of EP3081701B1 publication Critical patent/EP3081701B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/005—Sound absorbing accessories in piling

Definitions

  • the invention relates to a soundproofing device for piling under water, comprising at least one fixable on the seabed line having a plurality of bores, and at least a first compressor, with which compressed air in the line can be introduced so that it can escape from the holes. Furthermore, the invention relates to a method for reducing the transmission of sound in a liquid, comprising the following steps: applying a line to the seabed, which surrounds the sound source in an annular shape and is provided with holes and introducing compressed air into the conduit, so that this through the holes exit.
  • Such devices and methods can be used for sound insulation when introducing cylindrical piles in the seabed.
  • Such piles can be used to anchor monopile, tripod, tripile or jacket constructions on which structures such as wind gauges, wind turbines, offshore oil rigs or substations can be established.
  • the invention is therefore based on the object to provide a device and a method for sound insulation under water, which combines a good soundproofing effect with high reliability, so that the soundproofing measures can be performed reliably.
  • the object is achieved by a soundproofing device according to claim 1, a method according to claim 11 and a ship according to claim 10.
  • a first medium to rise from a line for sound insulation during the pile driving in a conventional manner, which surrounds the ram in an approximately annular manner.
  • the first medium can a gas or a gas mixture are used, for example compressed air.
  • the energy of the sound waves can be at least partially dissipated so that a lower sound intensity prevails outside of the bubble curtain.
  • the line can be applied so that it completely surrounds the ram in approximately annular. If a reduction is required only in certain directions, of course, the line can be designed only in these directions or the ring to the ram not completely closed.
  • the emerging from the line first medium is provided by at least a first compressor, which is usually mounted on the water surface on a ship or a jack-up barge.
  • the compressed first medium is then supplied to the bottom conduit via a supply hose and exits the conduit via a plurality of bores made along the length of the conduit.
  • the soundproofing device further comprises at least one winding device with at least one drum on which the line can be wound up.
  • the line can be unrolled like an anchor chain from board a working ship and laid on the seabed. If the ship drives a circle around the ramming point, all spatial directions of the sound propagation can be covered.
  • the drum of the winding device contains an internal feed, so that the line already can be applied during unwinding with the first medium or the second medium.
  • the line is mechanically stabilized during deployment, as this is not deformed by the externally acting water pressure.
  • impermissibly small bending radii can be avoided, which could damage the line.
  • the penetration of seawater and sand or sediment is avoided in contact with the ground, which could lead to the clogging of individual holes in the wall of the pipe.
  • the line is loaded with the first medium during retrieval, it contains little or no water, so that the transport weight is reduced and the energy expenditure for retrieving and / or transport can be reduced.
  • the second medium may contain or consist of a liquid.
  • the line retains its shape even when the first compressor is turned off or even disconnected from the line. A deformation by the externally acting water pressure can be avoided.
  • the second medium may have approximately the density of the surrounding water at the location of the conduit. Due to the low density difference of the second medium to the surrounding water, the line can remain filled with the second medium even if a continuous supply of the second medium is omitted. As a result, the energy consumption of the compressor can be reduced during work interruptions or the line can be disconnected from the compressor.
  • the second medium may contain or consist of fresh water.
  • the corrosion of metallic components of the line can be reduced.
  • the second medium may contain or consist of anticorrosion inhibitor.
  • the second medium may contain or consist of seawater.
  • the soundproofing device in the sea then there is no or only a slight difference in density between the second medium in the line and the environment. As a result, the outlet of the second medium from the line can be reduced. Furthermore, the second medium is simply available from the environment.
  • the salt water or seawater may be filtered to further reduce the input of contaminants and suspended matter.
  • a diverter may be present, which has at least one output and at least two inputs via which the line in a first operating state with a first medium and in a second operating state can be acted upon with a second medium.
  • the inputs of the pipe switch are connected to the supply of the first and second medium and the output of the pipe switch is connected to the feed to the drum of the winding device. By switching the pipe switch, the line can be filled either with the first or with the second medium.
  • the conduit may be pressurized with a first medium in a first mode of operation and with a second medium in a second mode of operation.
  • the first operating state may be an operating state and the second operating state may be a rest or standby state.
  • the conduit may be provided with a weighting body so that the total weight of the conduit is increased to such an extent that it remains lying on the seabed without further anchors or external additional weights.
  • at least one weighting body or a plurality of weighting bodies may be fastened to the outside of the pipe, for example in the form of interconnected pipe sections whose inside diameter is larger than the outside diameter of the pipe.
  • at least one weighting body can be introduced into the pipe. In this case, since the weighting body is mounted inside the pipe, the outer shape of the pipe remains unchanged, so that it can continue to be easily removed and / or inserted without external weights hinder the process.
  • Anchoring by divers can be done in addition, but is usually not required. At least the number of anchors can be reduced or the distance of the anchoring points can be increased, since the line remains due to their high weight on the seabed.
  • the weighting body may include a metal or alloy in some embodiments of the invention.
  • the weighting body may contain or consist of a mineral material, for example concrete.
  • the or the weighting bodies can be introduced directly into the production of the line, for example by extrusion.
  • weighting bodies can be glued, screwed or riveted at certain intervals in the line.
  • a plurality of weighting bodies may be connected to one another by a wire rope or a chain, which prevent slippage along the longitudinal extent of the line.
  • at least one sufficiently dimensioned chain with a plurality of chain links can be used as the sole weighting body.
  • Such a weighting body can be easily introduced into the line. Due to the mobility of the chain links of the weighting body does not affect the winding and unrolling of the line or only slightly.
  • the conduit may comprise at least one longitudinal portion having a tube with a wall, the wall containing at least one layer of wire mesh.
  • multiple layers of wire mesh may be present in the wall.
  • the number of layers of the wire mesh may be between 1 and 8, between 2 and 7, or between 3 and 5.
  • the wire mesh in the Wall of the hose increases its tensile strength, so that mechanical damage or an intolerable cross-sectional or length change during unwinding of the hose is avoided.
  • the wire mesh can limit the elasticity of the tube, so that it retains its desired cross section even at high pressure.
  • the device can be operated with greater reliability and be safely out and introduced.
  • the tensile strength can be increased by at least one wire mesh in the wall and / or by a weighting body, if the weighting body contains or consists of a chain or a wire rope.
  • the wire mesh and / or the chain or the at least one weighting body may contain or consist of a stainless steel.
  • a stainless steel is to be understood as meaning an alloyed steel which is corrosion-resistant or at least resistant to corrosion.
  • steels with the material numbers 1.4401, 1.4571 or 1.4462 can be used. The use of these stainless steels extends the life of the proposed device if seawater gets in contact with the weighting body and / or the wire mesh through the air outlet openings or damage to the wall.
  • the drum may have a drive, such as an electric or hydraulic drive.
  • the drum may be configured to receive more than about 900 meters, more than about 1000 meters, or more than about 1100 meters of conduction.
  • multiple lines may be deployed simultaneously by unwinding each line from an associated winding device which unwind the lines at different speeds. If the winding devices each have drums with the same diameter, the rotational speed can be chosen differently for this purpose. As a result, the pipes come to rest on the seabed at a distance.
  • the speed may be selected to be substantially concentric with the conduits laid with a radius that is from about 10 meters to about 30 meters greater than the radius of the inner conduit. Such a double or multiple bubble curtain can bring about improved sound reduction.
  • FIG. 1 shows an example of application of the present invention proposed soundproofing method or the soundproofing device.
  • FIG. 1 shows the tower of a wind turbine 3, which is anchored by means of a tripod 30 on the seabed 2.
  • the water depth at the place of installation of Wind turbine 3 may for example be about 10 m to about 45 m or about 25 to about 40 m.
  • the tripod 30 has at its feet mounting sleeves 31.
  • the mounting sleeves 31 are intended to receive a pile pile 32. If the tripod 30 is securely connected to the Rammpfählen 32 and the driven piles 33 are securely anchored in the seabed 2, the wind turbine 3 is reliable on the seabed 2.
  • the driven piles 32 have a diameter of about 2 m to about 5 m and a length from about 20 m to about 40 m.
  • the ramming piles 32 are driven with a ram, not shown, with sound emissions 21 arise with high intensity, which propagate as structure-borne noise in seawater.
  • the line 10 is rolled out by a winding device 15, which is mounted on a ship 19 and based on FIG. 2 will be described in more detail.
  • the ship 19 has once circumnavigated the site and thereby rolled out the line 10, this is due to its own weight on the seabed 2.
  • the line 10 may already be applied during application with compressed air from a first compressor 51. Due to the weighting body in the interior of the line 10 this still sinks by its own weight on the seabed 2 and remains there.
  • the line 10 Before commencement of the pile driving the line 10 is acted upon by at least a first compressor 51 and a line 181 with compressed air.
  • the pressurized air 180 exits the conduit 10 through openings in the wall of the conduit 10 and rises in the form of bubbles to the surface of the sea.
  • the high-intensity sound emission 21 is attenuated as it passes through this bubble curtain 180, so that a lower sound intensity 22 is perceptible outside the area bounded by the line 10.
  • the line 10 with the help of the winding device 15 can be caught up again on board the ship 19 and is subsequently available for the next use.
  • the ship 19 drive without drive or with low engine power, while the line 10 is obtained with the winding device 15.
  • the ship 19 follows the course of the line 10 and kink loading of the line 10 or wrapping of the tripod 30 with the line 10 is avoided.
  • the winding device 15 has a frame 151.
  • the frame 151 can have the outer dimensions of a conventional container, for example the dimensions of a freight container according to ISO 668. In this way, the winding device 15 can be transported and stored as part of a container stack to save space.
  • the frame 151 has the standard dimensions of a freight container, it can also have the connecting elements 153 of such a container, so that a plurality of winding devices 15 such as containers can be stacked on top of one another or mixed stacks of winding devices 15 and containers can be formed. This allows a space-saving and cost-effective transport option on the ship 19th
  • a drum 152 is rotatably mounted in the frame 151.
  • the drum 152 can be designed to accommodate more than 500 m, more than 900 m, more than 1000 m or more than 1100 m of the tube 11. If the hose 10 is made of a flexible rubber or plastic and has arranged inside weighting body, the hose can be stored on the drum 152 particularly space-saving due to the smooth outer side.
  • the tube may in some embodiments have a diameter greater than 40 mm or greater than 50 mm or greater than 60 mm.
  • the drum 152 can be set in rotation with a hydraulic drive, not shown, so that the hose 11 is unwound while the ship 19 orbits the area provided for the soundproofing measures. If the drive of the drum 152 is dimensioned sufficiently strong, to catch up the hose 10, the ship 19 can be pulled back on the hose 10, wherein the tube 10 winds on the drum 152.
  • FIG. 2 a port 154 recognizable.
  • the port 154 may be connected to the output of a diverter 4, as described below with reference to FIG. 3 is described. Due to the inside of the drum lying connection of the tube 10, the tube 10 may already be applied during the rolling with the first medium or with the second medium.
  • FIG. 3 shows a block diagram of an embodiment of the inventive soundproofing device or the winding device 15 of the soundproofing device 1.
  • the winding device 15 has a drum 152, which can be brought into rotation by drive means 156.
  • the drive means 156 may include an electric or hydraulic drive. Depending on
  • the drum 152 has an internal air feed, i. inside the drum 152 of the winding device 15, a compressed air connection for the line 10 is arranged.
  • a line is arranged approximately on the axis of rotation of the drum 152, which opens into the port 154.
  • a rotatable seal Between the fixed port 154 and the rotatable part of the drum is a rotatable seal to prevent leakage of the medium flowing in the conduit 10.
  • the line 10 is connected by means of a coupling 155 releasably connected to the internal feed of the drum 152.
  • a third shut-off valve 43 can optionally be arranged on the end of the line 10 facing the coupling 155.
  • the port 154 is connected to the output of a diverter 4.
  • the diverter 4 has at least a first input and at least one second input, which are selectively connectable to the output and thus to the terminal 154.
  • an input of the diverter 4 is connected to the output 512 of a first compressor 51.
  • the first compressor 51 has an inlet 511 via which a first fluid 61 can be fed to the first compressor 51.
  • the first fluid 61 may be gaseous.
  • the first fluid 61 may be ambient air or ambient air so that the first compressor 51 provides compressed air supply to the conduit 10.
  • the second input of the diverter 4 is connected to the output 522 of a second compressor 52.
  • the second compressor 52 is via its input 521, a second fluid 62 supplied.
  • the second fluid 62 may be a liquid or contain a liquid, for example, water.
  • the first compressor 51 may be a compressor, such as a screw compressor or a reciprocating compressor.
  • the second compressor 52 may be or include a pump, such as a diaphragm pump, a centrifugal pump, or a piston pump.
  • FIG. 3 4 further shows an exemplary embodiment of the diverter 4.
  • the diverter 4 includes a tee 45.
  • the outlet of the tee is connected to the port 154 of the drum 152.
  • a first shut-off valve 41 and a second shut-off valve 42 are located in the diverter 4.
  • the shut-off valves 41 and 52 it is possible to prevent liquid from entering the first compressor 51 or from compressed air damaging the second compressor 52.
  • the third shut-off valve 43 and / or the second shut-off valve 42 and the first shut-off valve 41 the two compressors 51 and 52 can be switched off after the line 10 has been filled with a liquid.
  • the energy consumption of a soundproofing device can be reduced during breaks.
  • it is possible, after closing the third shut-off valve 43 to completely disconnect the line 10 from the winding device and / or the ship carrying the winding device.
  • the third shut-off valve 43 prevents the second fluid from leaving the line 10. Since the density of the second fluid approximately corresponds to the density of the surrounding water, the second fluid can not escape from the bores of the conduit 10 at the seabed 2. The penetration of sand or sediment through the holes in the conduit 10 is characterized prevents even when the supply of the first fluid from the first compressor 51 is stopped.
  • the line 10 is wound on the drum 152.
  • the first fluid 61 can be supplied to the line 10 by means of the first compressor 51 when the second shut-off valve 42 is closed.
  • the first fluid 61 may be compressed air.
  • At least one line 10 is deployed on the seabed.
  • it may be provided to design the line 10 in a ring around the sound source on the seabed.
  • several lines can be laid out approximately parallel or in concentric rings on the seabed.
  • the line 10 is acted upon by the first fluid 61, the line is dimensionally stable, so that unintentional kinking during deployment is avoided. Furthermore, due to the internal pressure, neither sand nor water or sediment can penetrate into the bores, so that contamination or damage to the duct 10 does not occur.
  • pile driving operations can be carried out, as described with reference to FIG FIG. 1 explained.
  • the first shut-off valve 41 is closed and the second shut-off valve 42 is opened. Then, by means of the second compressor 52, a second medium 62 are introduced into the conduit 10.
  • the second medium 62 may be a liquid, for example seawater.
  • the seawater can be filtered.
  • the surface water sucked in by the ship 19 anyway contains less particles or sediment than the water at the bottom of the sea.
  • the conduit 10 is filled with the second medium 62.
  • the second shut-off valve 42 and optionally the third shut-off valve 43 can be closed. In this state, both compressors 51 and 52 can be switched off without the line 10 being damaged or blocked by the penetration of sediments.
  • the line 10 on the coupling 155 can be separated from the drum 152.
  • the end of the conduit 10 with the shut-off valve 43 attached to a buoy and exposed in the sea. After that, the ship 19 can even move away without damaging the pipe 10 by penetrating sand or sediment.
  • second medium can be removed from the line 10 by the first medium 61 by means of first compressor 51 is conveyed into the line, as described with reference to the first method step 81.
  • first compressor 51 is conveyed into the line, as described with reference to the first method step 81.
  • the soundproofing device is active again, so that the method step 83 can be carried out again.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Earth Drilling (AREA)
EP16164761.5A 2015-04-13 2016-04-11 Procede et dispositif destines a l'isolation acoustique Active EP3081701B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16164761T PL3081701T3 (pl) 2015-04-13 2016-04-11 Sposób i urządzenie do izolacji akustycznej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015206584.7A DE102015206584A1 (de) 2015-04-13 2015-04-13 Verfahren und Vorrichtung zum Schallschutz

Publications (2)

Publication Number Publication Date
EP3081701A1 true EP3081701A1 (fr) 2016-10-19
EP3081701B1 EP3081701B1 (fr) 2018-06-13

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EP16164761.5A Active EP3081701B1 (fr) 2015-04-13 2016-04-11 Procede et dispositif destines a l'isolation acoustique

Country Status (4)

Country Link
EP (1) EP3081701B1 (fr)
DE (1) DE102015206584A1 (fr)
DK (1) DK3081701T3 (fr)
PL (1) PL3081701T3 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043128A1 (de) 2004-09-03 2006-03-09 Menck Gmbh Pfahlführungsvorrichtung
DE102012202132A1 (de) * 2012-02-13 2013-08-14 Bernhard Weyres Verfahren und Vorrichtung zum Schallschutz

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043128A1 (de) 2004-09-03 2006-03-09 Menck Gmbh Pfahlführungsvorrichtung
DE102012202132A1 (de) * 2012-02-13 2013-08-14 Bernhard Weyres Verfahren und Vorrichtung zum Schallschutz

Also Published As

Publication number Publication date
DE102015206584A1 (de) 2016-10-13
DK3081701T3 (da) 2018-10-01
EP3081701B1 (fr) 2018-06-13
PL3081701T3 (pl) 2018-12-31

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