DK201200188U3 - Anchoring system for a park of floating wind power units - Google Patents
Anchoring system for a park of floating wind power units Download PDFInfo
- Publication number
- DK201200188U3 DK201200188U3 DKBA201200188U DKBA201200188U DK201200188U3 DK 201200188 U3 DK201200188 U3 DK 201200188U3 DK BA201200188 U DKBA201200188 U DK BA201200188U DK BA201200188 U DKBA201200188 U DK BA201200188U DK 201200188 U3 DK201200188 U3 DK 201200188U3
- Authority
- DK
- Denmark
- Prior art keywords
- wind power
- anchoring
- power unit
- elements
- anchorage
- Prior art date
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- 238000004873 anchoring Methods 0.000 title claims abstract description 56
- 239000013049 sediment Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Wind Motors (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Forankringssystem til en park med et stort antal flydende vindkraftenheder (2). Forankringssystemet omfatter et stort antal forankringselementer (1) fastgjorte i havets sedimentbund, og et stort antal fastgorelseselementer. Hver vindkraftenhed (2) er forankret med mindst tre fastgorelseselementer mellem respektive fastgorelseselementer og vindkraftenheden (2). Forankringselementet (1) er enten en forankringspæl til opsugn ing eller en nedrammet forankringspæl.Anchoring system for a park with a large number of floating wind power units (2). The anchorage system comprises a large number of anchorage elements (1) attached to the sediment bottom of the sea, and a large number of attachment elements. Each wind power unit (2) is anchored by at least three fixing elements between respective fixing elements and the wind power unit (2). The anchor element (1) is either an anchorage pile for suction or a framed anchorage pile.
Description
DK 2012 00188 U3DK 2012 00188 U3
Opfindelsens områdeFIELD OF THE INVENTION
Den foreliggende opfindelse angår et forankringssystem til en park med et stort antal flydende vindkraftenheder. Forankringssystemet omfatter et stort antal forankringselementer fastgjorte i havets sedimentbund og et stort antal fastgørelseselementer. Hver vindkraftenhed er forankret med mindst tre fastgørelseselementer mellem respektive fastgørelseselementer og vindkraftenheden.The present invention relates to an anchoring system for a park with a large number of floating wind power units. The anchorage system comprises a large number of anchorage elements attached to the sediment bottom of the sea and a large number of attachment elements. Each wind power unit is anchored with at least three fasteners between respective fasteners and the wind power unit.
Kendt teknikPrior art
For at forankre en flydende vindkraftenhed i en såkaldt vindfarm, hvor mange enheder skal forankres med lige stor indbyrdes afstand, betyder at et antal formål skal være opfyldte. På den ene side ønskes så få forankringspunkter som muligt. På den anden side behøver forankringselementernes positioner at være arrangeret med præcision. Yderligere må rebene/kæderne ikke kollidere med nogen som helst flydende enhed. Yderligere skal det såkaldte "offset” være minimalt, for at strømforbindelseskablerne ikke bliver udsat for høje belastninger og spændinger. Endeligt skal forankringen modstå en retningsændring i trækkraften i tilfælde af, at en af de tre reb skulle knække.To anchor a floating wind power unit in a so-called wind farm, where many units must be anchored with equal spacing, means that a number of purposes must be fulfilled. On the one hand, as few anchoring points as possible are desired. On the other hand, the positions of the anchoring elements need to be arranged with precision. Furthermore, the ropes / chains must not collide with any floating device. In addition, the so-called "offset" must be minimal so that the power cables are not exposed to high loads and voltages, and finally, the anchorage must withstand a change of direction in the traction in case one of the three ropes breaks.
Kendte forankringsmidler: A. Forankring med reb/kæde således at trækkræfterne hovedsagelige er parallelle med vandoverfladen ved ankeret. Ankeret udsættes for en trækkende bevægelse langs havbunden, indtil det er sikkert fastgjort. Ankerets position er afhængig af havbundsbetingelserne, og er relativ ubestemt. Ankeret kan først fastgøres efter en lang distance (hundrede af meter) fra den ønskede placering. Trækkraften skal hovedsagelig være i én retning langs havbunden. Rebenes/kædernes længde bestemmes blandt andet af havdybden. Det er nødvendigt at anvende mindst tre ankre for hver enhed, og positionen er relativ ubestemt. Denne fremgangsmåde opfylder derfor ikke formålene ifølge ovennævnte.Known anchoring means: A. Anchorage with rope / chain so that the pulling forces are essentially parallel to the water surface at the anchor. The anchor is subjected to a pulling motion along the seabed until it is securely fastened. The position of the anchor depends on the seabed conditions and is relatively undetermined. The anchor can only be fixed after a long distance (hundreds of meters) from the desired location. Traction must be mainly in one direction along the seabed. The length of the ropes / chains is determined, among other things, by the depth of the sea. At least three anchors are required for each unit and the position is relatively indefinite. Therefore, this method does not meet the objectives of the above.
B. Forankringspæl til opsugning. Forankringspunktet er forsynet med en "bunden i vejret spand”. Vand evakueres fra "spanden”, og det resulterende højere vandtryk ovenover "spanden” presser derfor "spanden” ned i havbunden. Trækkræfterne 2 DK 2012 00188 U3 kan være i enhver retning. Forankringspælen til opsugning kan yderligere modstå visse vertikale kræfter. Forankringspunktets position kan bestemmes med stor nøjagtighed. Denne fremgangsmåde har bedre mulighed for at opfylde formålene ifølge ovennævnte.B. Anchor pole for aspiration. The anchorage point is provided with a "bottom of the bucket." Water is evacuated from the "bucket" and the resulting higher water pressure above the "bucket" therefore pushes the "bucket" into the seabed. The pulling forces 2 DK 2012 00188 U3 can be in any direction. The anchorage pole for suction can further withstand certain vertical forces. The position of the anchorage point can be determined with great accuracy. This approach has a better chance of meeting the objectives of the above.
C. Nedrammet forankringspæl. I stedet for at anvende vandtryk, kan man med gentagne slag tvinge et cylindrisk forankringselement ned i havbunden med tilsvarende fordele som forankringspælen til opsugning.C. Framed anchor pole. Instead of applying water pressure, a cylindrical anchoring element can be repeatedly forced into the seabed with similar advantages as the anchorage pile for aspiration.
Formål oa sammendrag af opfindelsenObject and Summary of the Invention
Formålet med den foreliggende opfindelse er at tilvejebringe et forbedret forankringssystem, som tillader forankring af et stort antal flydende vindkraftenheder ved anvendelse af reduceret antal forankringselementer i forhold til den kendte teknik. Et yderligere formål med opfindelsen er at tilvejebringe et forankringssystem, som gør det muligt at reducere omkostningerne ved forankring af et stort antal flydende vindkraftenheder. Endnu et yderligere formål med opfindelsen er at tilvejebringe et forankringssystem, som er simpelt at installere uden hensyn til havdybden.The object of the present invention is to provide an improved anchoring system which permits anchoring of a large number of floating wind power units using reduced number of anchoring elements over the prior art. A further object of the invention is to provide an anchoring system which allows to reduce the cost of anchoring a large number of floating wind power units. Yet another object of the invention is to provide an anchoring system which is simple to install without regard to the depth of the sea.
Dette formål opnås med et forankringssystem, som omfatter et stort antal forankringselementer fastgjorte i havets sedimentbund, og et stort antal fastgørelseselementer, såsom reb, hvori hver vindkraftenhed er forankret med mindst tre fastgørelseselementer mellem respektive forankringselementer og vindkraftenheden. Forankringssystemet er kendetegnet ved at forankringselementet enten er en forankringspæl til opsugning eller en nedrammet forankringspæl.This object is achieved with an anchoring system comprising a large number of anchoring elements attached to the sediment bottom of the sea, and a large number of anchoring elements such as ropes in which each wind power unit is anchored with at least three fasteners between respective anchoring elements and the wind power unit. The anchoring system is characterized in that the anchoring element is either an anchorage pile for suction or a downed anchorage pile.
Ifølge en af opfindelsens udførelsesformer er vindkraftparken arrangeret således, at vindkraftenhederne er fordelte, sådan at de danner en eller flere sekskantede celler med ét af forankringselementerne placeret i midten af nævnte sekskantede celle.According to one embodiment of the invention, the wind farm is arranged so that the wind power units are distributed such that they form one or more hexagonal cells with one of the anchoring elements located in the center of said hexagonal cell.
Kombinationen af at arrangere vindkraftenhederne i sekskantede celler og at anvende enten en forankringspæl til opsugning eller en nedrammet forankringspæl som forankringselementer kræver færre forankringselementer, og gør det muligt for fastgørelseselementerne at være direkte forbundne mellem forankringselementet i midten af 3 DK 2012 00188 U3 den sekskantede celle og de omgivende flydende vindkraftenheder. Omkostningen ved at arrangere opfindelsens forankringssystem reduceres derved i sammenligning med kendte forankringssystemer.The combination of arranging the wind power units in hexagonal cells and using either an anchorage pile for aspiration or a downed anchorage pile as anchorage elements requires fewer anchorage elements, and allows the attachment elements to be directly connected between the anchorage element in the middle of the 3 and 2012 sec. the surrounding liquid wind power units. The cost of arranging the anchoring system of the invention is thereby reduced in comparison with known anchoring systems.
Ifølge en af opfindelsens udførelsesformer strækker mindst seks fastgørelseselementer sig fra hvert forankringselement til omgivende vindkraftenheder for i det mindst en majoritet af forankringselementerne.According to one embodiment of the invention, at least six fastening elements extend from each anchorage element to surrounding wind power units for at least a majority of the anchorage elements.
Ifølge en af opfindelsens udførelsesformer er forankringselementerne placerede i et ensartet mønster med lige stor indbyrdes afstand, og vindkraftenhederne er placerede i et tilsvarende mønster med lige stor indbyrdes afstand, således at ingen af forankringselementerne har mere end ét fastgørelseselement forbundet til en vindkraftenhed.According to one embodiment of the invention, the anchoring elements are placed in a uniform pattern with equal spacing, and the wind power units are placed in a corresponding pattern with equal spacing, so that none of the anchoring elements has more than one attachment element connected to a wind power unit.
Ifølge en af opfindelsens udførelsesformer omfatter forankringselementerne en krop udformet som et rør, der egner sig til at definere et lukket rum med sedimentbunden, og en ventil, hvori forankringselementerne er indrettede til at fastgøres i sedimentbunden ved at evakuere rummet for vand.According to one embodiment of the invention, the anchoring elements comprise a body formed as a tube suitable for defining a closed compartment with the sediment bottom, and a valve in which the anchoring elements are adapted to be secured to the sediment bottom by evacuating the space for water.
Ifølge en af opfindelsens udførelsesformer er fastgørelseselementerne reb, der primært omfatter et elastisk polymermateriale.According to one embodiment of the invention, the fastening elements are ropes which primarily comprise an elastic polymer material.
Ifølge en af opfindelsens udførelsesformer omfatter rebene primært polyester.According to one embodiment of the invention, the ropes primarily comprise polyester.
Ifølge en af opfindelsens udførelsesformer omfatter systemet mindst et mellem forankringselementet og den flydende vindkraftenhed placeret lod per fastgørelseselement.According to one of the embodiments of the invention, the system comprises at least one solder placed between the anchoring element and the floating wind power unit per securing element.
Ifølge en af opfindelsens udførelsesformer omfatter systemet et yderligere forankringselement placeret mellem hver anden vindkraftenhed, således at hver anden vindkraftenhed er forankret ved hjælp af tre fastgørelseselementer, og hver anden vindkraftenhed er forankret ved hjælp af seks fastgørelseselementer.According to one embodiment of the invention, the system comprises an additional anchoring element located between every other wind power unit such that every other wind power unit is anchored by three fasteners and every other wind power unit is anchored by six fasteners.
Kort beskrivelse af tegningerne 4 DK 2012 00188 U3Brief Description of the Drawings 4 DK 2012 00188 U3
Opfindelsen vil nu blive forklaret mere detaljeret ved hjælp af beskrivelsen af forskellige udførelsesformer for opfindelsen og med henvisning til de vedlagte figurer.The invention will now be explained in more detail by means of the description of various embodiments of the invention and with reference to the accompanying figures.
Fig. 1 viser en flydende vindkraftenhed set fra siden.FIG. 1 is a side view of a floating wind power unit.
Fig. 2 viser et forankringssystem til en park med et stort antal flydende vindkraftenheder ifølge en af opfindelsens udførelsesformer.FIG. 2 shows an anchoring system for a park with a large number of floating wind power units according to one of the embodiments of the invention.
Fig. 3 viser en udførelsesform af forankringssystemet set fra siden.FIG. 3 shows a side view of an embodiment of the anchoring system.
Fig. 4 viser et forankringssystem til en park med et stort antal flydende vindkraftenheder ifølge en af opfindelsens udførelsesformer.FIG. 4 shows an anchoring system for a park with a large number of floating wind power units according to one of the embodiments of the invention.
Detaljeret beskrivelse af tegningerneDetailed description of the drawings
Figur 1 viser en flydende vindkraftenhed set fra siden. Ved forenden omfatter den en flydende bøje, hvorom den kan rotere. Bøjen er forankret med reb til forankringselementer i havbunden. Hver vindkraftenhed er forankret ved hjælp af mindst tre reb. Dybden kan f.eks. være 20 - 30 meter.Figure 1 is a side view of a floating wind power unit. At the front end, it includes a floating buoy through which it can rotate. The buoy is anchored with rope for anchoring elements in the seabed. Each wind power unit is anchored using at least three ropes. Depth can be e.g. be 20 - 30 meters.
Se figur 2. Et forankringselement 1, såsom en forankringspæl til opsugning eller nedrammet forankringspæl, er arrangeret i et sekskantet mønster. Hvert forankringselement 1 har seks fastgørelseselementer, såsom reb, fastgjorte med 60 graders adskillelse. Hver flydende vindkraftenhed 2 omfatter vindturbiner. Hver flydende vindkraftenhed 2 er fastgjort ved hjælp af mindst tre fastgørelseselementer, ét fastgørelseselement til tre forskellige forankringselementer 1. Fastgørelseselementerne er af polyestertype eller lignende, som i stedet for en geometrisk forlængelse langs kædelinen udgøres af elastisk materiale, som er forspændt. Når den flydende vindkraftenhed 2 udsættes for havets kræfter, strækkes det/de forspændte reb. Den flydende vindkraftenhed 2’s horisontale bevægelse kan reduceres sammenlignet med forlængelsen af kædelinen. Forankringselementet 1 kan yderligere absorbere vertikale belastninger, som gør forankringspunkterne relative uafhængige af havdybden. Man har opnået et system, som bortset fra randeffekter kun har 0,5 forankringspunkter per vindkraftenhed (seks reb per forankringselement 1 og tre liner per flydende vindkraftenhed 2).See Figure 2. An anchoring element 1, such as an anchorage pile for suction or downed anchorage pile, is arranged in a hexagonal pattern. Each anchor member 1 has six fasteners, such as ropes, secured with 60 degree separation. Each floating wind power unit 2 comprises wind turbines. Each floating wind power unit 2 is secured by at least three fasteners, one fastener to three different anchoring elements 1. The fasteners are of polyester type or the like, which instead of a geometric extension along the chain line is constituted by elastic material which is prestressed. When the floating wind power unit 2 is exposed to the forces of the sea, the biased rope (s) are stretched. The horizontal movement of the floating wind power unit 2 can be reduced compared to the extension of the chain line. The anchor element 1 can further absorb vertical loads which make the anchor points relatively independent of the sea depth. A system has been obtained which, with the exception of peripheral effects, has only 0.5 anchorage points per wind power unit (six ropes per anchorage element 1 and three lines per floating wind power unit 2).
Se figur 3. Ved en bestemt afstand fra den flydende vindkraftenhed 2 er en vægt/et lod 5 fastgjort på rebet, hvilket resulterer i tre funktioner.See Figure 3. At a certain distance from the floating wind power unit 2, a weight / weight 5 is attached to the rope, resulting in three functions.
5 DK 2012 00188 U3 1. Man kan forankre den flydende vindkraftenhed 2 ved en betydelig stor havdybde uden at rebene kolliderer med en flydende vindkraftenhed, som roterer i en cirkulær bevægelse efter ændring i vindretningen.5 DK 2012 00188 U3 1. The floating wind power unit 2 can be anchored at a considerable depth of sea without the ropes colliding with a floating wind power unit which rotates in a circular motion after changing in the wind direction.
2. Man kombinerer den geometriske forlængelse med rebets elasticitet, og reducerer derved belastningerne i rebene.2. The geometric extension is combined with the elasticity of the rope, thereby reducing the loads in the ropes.
3. Man holder rebet forspændt hele tiden, og gør derved installationen lettere. Rebets spænding opnås, når loddet arrangeres.3. Keeping the rope prestressed all the time, making installation easier. The tension of the rope is obtained when the solder is arranged.
Det er sikkert, at andre forankringselementer end de ovenfor nævnte kan anvendes under forudsætning af, at de opfylder betingelserne for at modstå en bestemt kraft i sen vertikale retning, og at de kan arrangeres med præcision. Det kan f.eks. være en såkaldt gravitationsforankring, som består af tilstrækkelig stor masse.It is certain that anchoring elements other than those mentioned above can be used provided that they meet the conditions for resisting a certain force in the late vertical direction and that they can be arranged with precision. It can for example. be a so-called gravity anchor, which consists of sufficient mass.
Et stort antal af andre mønstre er muligt, men de tilvejebringer samtidig enten flere forankringspunkter per vindkraftenhed eller en ujævn fordeling af antallet af reb per vindkraftenhed 2. I figur 4 er imidlertid vist et alternativt mønster, der tilvejebringer visse fordele. Under hver anden vindkraftenhed 2 er arrangeret en forankring 3, som kun har tre reb. Dette resulterer i det samme antal forankringspunkter som antallet af flydende vindkraftenheder 2. Hver anden flydende vindkraftenhed 2 modtager derved seks reb til forankringen. Antallet af forankringspunkter er imidlertid fordoblet, idet antallet af forankringspunkter er lig med antallet af flydende vindkraftenheder 2. Fordelen er imidlertid, at hver anden flydende vindkraftenhed 2 har en stor sikkerhedsmargin mod kræfter fra vand og vind, således at risikoen for domino-effekt reduceres. Hvis et reb knækker af en vindkraftenhed 2, som kun har tre reb, stoppes den fra at drive yderligere end hen til den næste flydende vindkraftenhed 2, som har seks forankringsreb.A large number of other patterns are possible, but at the same time they provide either multiple anchorage points per wind power unit or an uneven distribution of the number of ropes per wind power unit 2. However, Figure 4 shows an alternative pattern that provides certain advantages. Under each other wind power unit 2, an anchorage 3 is arranged which has only three ropes. This results in the same number of anchorage points as the number of floating wind power units 2. Every other floating wind power unit 2 receives six ropes for the anchorage. However, the number of anchorage points has doubled, the number of anchorage points being equal to the number of floating wind power units 2. However, the advantage is that every other floating wind power unit 2 has a large margin of safety against water and wind forces, thus reducing the risk of domino effect. If a rope breaks from a wind power unit 2 which has only three ropes, it is stopped from drifting further than to the next floating wind power unit 2, which has six anchor ropes.
Fordelen ved denne opfindelse er, at et forankringspunkt betjener seks reb, og hver flydende vindkraftenhed 2 kun har 0,5 forankringspunkter (tre reb til tre fastgørelser, og hvert forankringselement 1 har seks fastgørelser), se figur 2. Alle andre beskrevne krav og formål er desuden opfyldte.The advantage of this invention is that an anchor point serves six ropes and each floating wind power unit 2 has only 0.5 anchor points (three ropes for three fasteners, and each anchor element 1 has six fasteners), see Figure 2. All other requirements and objects described are additionally fulfilled.
6 DK 2012 00188 U36 DK 2012 00188 U3
Yderligere er de andre formål også opfyldt på en god måde. Man har en veldefineret position for hvert forankringspunkt. Man undgår kollision mellem forankringsreb og den mest dybderagende del af en vindkraftenhed. Man reducerer belastninger. Man kan anvende kortere reb, idet forankringselementet 1 modstår vertikale kræfter. Endeligt har man ikke en 5 stærk afhængighed af havdybden i forhold til den indbyrdes afstand mellem flydende vindkraftenheder 2, og derfor kan den flydende vindkraftenhed 2 placeres på en optimal måde.Furthermore, the other purposes are also fulfilled in a good way. You have a well-defined position for each anchor point. Collision between anchorage rope and the most in-depth part of a wind power unit is avoided. You reduce loads. Short ropes can be used as the anchor element 1 resists vertical forces. Finally, one does not have a strong dependence on the depth of the sea relative to the distance between floating wind power units 2, and therefore the floating wind power unit 2 can be placed in an optimal way.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1200013 | 2012-01-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK201200188U3 true DK201200188U3 (en) | 2013-04-29 |
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ID=47740628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKBA201200188U DK201200188U3 (en) | 2012-01-04 | 2012-11-26 | Anchoring system for a park of floating wind power units |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN203391970U (en) |
| DE (1) | DE202013100004U1 (en) |
| DK (1) | DK201200188U3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5685670B1 (en) * | 2014-07-08 | 2015-03-18 | 三井海洋開発株式会社 | Offshore structure group mooring system and offshore structure group mooring method |
| DE102015121371B4 (en) * | 2015-12-08 | 2018-11-15 | Aerodyn Consulting Singapore Pte Ltd | Offshore wind farm |
| CN109533202A (en) * | 2018-12-21 | 2019-03-29 | 天津大学 | A kind of suction anchoring mooring structure device |
| CN113653601B (en) * | 2021-07-12 | 2023-03-03 | 中国华能集团清洁能源技术研究院有限公司 | Semi-submersible floating type fan device and system |
| CN114684324A (en) * | 2022-03-11 | 2022-07-01 | 中国华能集团清洁能源技术研究院有限公司 | Floating type fan set and floating type fan array |
-
2012
- 2012-11-26 DK DKBA201200188U patent/DK201200188U3/en not_active IP Right Cessation
- 2012-12-26 CN CN201220751756.6U patent/CN203391970U/en not_active Expired - Lifetime
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2013
- 2013-01-02 DE DE202013100004U patent/DE202013100004U1/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| DE202013100004U1 (en) | 2013-01-23 |
| CN203391970U (en) | 2014-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UUP | Utility model expired |
Expiry date: 20221126 |