JPH0528387Y2 - - Google Patents
Info
- Publication number
- JPH0528387Y2 JPH0528387Y2 JP1987198351U JP19835187U JPH0528387Y2 JP H0528387 Y2 JPH0528387 Y2 JP H0528387Y2 JP 1987198351 U JP1987198351 U JP 1987198351U JP 19835187 U JP19835187 U JP 19835187U JP H0528387 Y2 JPH0528387 Y2 JP H0528387Y2
- Authority
- JP
- Japan
- Prior art keywords
- floating body
- wave
- floating
- period
- waves
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000010248 power generation Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 241001481833 Coryphaena hippurus Species 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 208000031361 Hiccup Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 241000277284 Salvelinus fontinalis Species 0.000 description 1
- 208000003028 Stuttering Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、浮体式波浪発電装置に関するもの
である。[Detailed description of the invention] [Field of industrial application] This invention relates to a floating wave power generation device.
近時、海洋における波浪のエネルギーを利用し
て発電させるための波浪発電装置の開発が各方面
で行なわれている。
Recently, development of wave power generation devices for generating electricity by utilizing the energy of waves in the ocean has been carried out in various fields.
第３図は、従来知られている浮体式波浪発電装
置の一例を示す説明図である。第３図に示すよう
に、従来の浮体式波浪発電装置は、ドルフイン２
に係留された波浪エネルギーを吸収するための浮
体１′と、ドルフイン２上に設けられた発電機３
と、波浪による浮体１′の上下変位を発電機３に
伝達し、発電機３を駆動せしめるための伝達杆４
とからなつている。浮体１′は第４図イに示すよ
うな箱形状または同図ロに示すようなソルターダ
ツク形状になつており、海面５下の形状は一定で
ある。 FIG. 3 is an explanatory diagram showing an example of a conventionally known floating wave power generation device. As shown in Figure 3, the conventional floating wave power generation device is the Dolphin 2
A floating body 1' moored to absorb wave energy and a generator 3 installed on Dolphin 2.
and a transmission rod 4 for transmitting the vertical displacement of the floating body 1' due to waves to the generator 3 and driving the generator 3.
It is made up of. The floating body 1' has a box shape as shown in FIG. 4A or a salter duck shape as shown in FIG. 4B, and its shape below the sea surface 5 is constant.
ドルフイン２に係留され海面５上に浮遊してい
る浮体１′は、波浪によつて上下に変位する。こ
のような浮体１′の変位は、伝達杆４によつて発
電機３に伝達され、発電機３を駆動せしめる。か
くして、発電機３により発電が行なわれる。 A floating body 1' moored to the Dolphin 2 and floating on the sea surface 5 is vertically displaced by waves. Such displacement of the floating body 1' is transmitted to the generator 3 by the transmission rod 4, thereby driving the generator 3. In this way, the generator 3 generates electricity.
従来の浮体式波浪発電装置は、上述したように
海面５下の形状が一定の箱形状またはソルターダ
ツク形状の浮体１′によつて波浪エネルギーを吸
収している。従つて、浮体１′の吃水が一定のた
めその上下揺固有周期も一定である。この結果、
浮体１′が波に同調するのは、波のある定つた周
期のみとなり、その周期以外の波に対しては浮体
１′は同期せず、従つて、波浪エネルギーの吸収
効率即ち発電効率が悪い問題がある。
As described above, the conventional floating wave power generation device absorbs wave energy by using the floating body 1', which has a constant box-shaped or salter-duck shape below the sea surface 5. Therefore, since the water level of the floating body 1' is constant, its natural period of heave is also constant. As a result,
Floating body 1' synchronizes with the waves only during a certain period of waves, and floating body 1' does not synchronize with waves outside of that period. Therefore, the absorption efficiency of wave energy, that is, the power generation efficiency is poor. There's a problem.
従つて、この考案の目的は、広範囲の周期の波
に対し浮体が自動的に同調する、波浪エネルギー
の吸収効率即ち発電効率の高い浮体式波浪発電装
置を提供することにある。 Therefore, the purpose of this invention is to provide a floating body type wave power generation device with high wave energy absorption efficiency, that is, power generation efficiency, in which the floating body is automatically tuned to waves having a wide range of periods.
この考案は、海面上に浮かぶ波浪エネルギーを
吸収するための浮体と、波浪による前記浮体の上
下変位をエネルギー源として発電する発電機とか
らなる浮体式波浪発電装置において、
前記浮体の垂直断面形状を台形となし、且つ、
前記浮体に対するバラスト水の注排水機構を設
け、波高計によつて計測された波の周期に基づい
て前記浮体内にバラスト水を注排水することによ
りその吃水を変化させ、前記浮体の上下揺固有周
期を波の周期に同調させるようにしたことに特徴
を有するものである。
This invention provides a floating wave power generation device consisting of a floating body floating on the sea surface for absorbing wave energy and a generator that generates electricity by using the vertical displacement of the floating body due to the waves as an energy source. Trapezoid and square, and
A ballast water injection and drainage mechanism for the floating body is provided, and the ballast water is injected and discharged into the floating body based on the period of waves measured by a wave height meter, thereby changing the water intake and reducing the ballast water characteristic of the vertical motion of the floating body. The feature is that the period is synchronized with the wave period.
次に、この考案の装置を、図面を参照しながら
説明する。第１図は、この考案の装置の一実施態
様を示す説明図である。図面に示すように、海域
に設置された、基礎杭６によつて支持されている
プラツトフオーム７には、浮体１が係留されてい
る。浮体１の垂直断面形状は台形であり、その内
部にバラスト水が注排水自在になつている。 Next, the device of this invention will be explained with reference to the drawings. FIG. 1 is an explanatory diagram showing one embodiment of the device of this invention. As shown in the drawing, a floating body 1 is moored to a platform 7 supported by foundation piles 6 installed in a sea area. The vertical cross-sectional shape of the floating body 1 is trapezoidal, and ballast water can be freely poured into the interior thereof.
プラツトフオーム７上には、発電機３が設けら
れており、発電機３と浮体１とは、波浪による浮
体１の上下変位を発電機３に伝達し、発電機３を
駆動せしめるための伝達杆４によつて連結されて
る。 A generator 3 is provided on the platform 7, and the generator 3 and the floating body 1 are connected to each other to transmit the vertical displacement of the floating body 1 due to waves to the generator 3, and to drive the generator 3. They are connected by rod 4.
プラツトフオーム７上には、給排水管９を有す
るポンプ８が設けられており、浮体１の上面に設
けられた孔１０に、給排水管９が挿入されてい
る。ポンプ８の駆動により、給排水管９および孔
１０を通して、浮体１内にバラスト水としての海
水が供給され、また、浮体１内の海水が排出され
る。 A pump 8 having a water supply and drainage pipe 9 is provided on the platform 7, and the water supply and drainage pipe 9 is inserted into a hole 10 provided on the upper surface of the floating body 1. By driving the pump 8, seawater as ballast water is supplied into the floating body 1 through the water supply and drainage pipes 9 and the holes 10, and the seawater in the floating body 1 is discharged.
浮体１の近傍の海面５には、波の高さを計測す
るための波高計１１が浮かばせてある。プラツト
フオーム７上には、波高計１１によつて計測され
た波の高さに基づいて波の周期を解析するための
周波数解析器１２、および、周波数解析器１２に
よつて解析された波の周期に基づいて、浮体１内
にバラスト水を注排水するようにポンプ８に駆動
指令を与えるための制御器１３が設けられてい
る。 A wave height meter 11 for measuring the height of waves is floated on the sea surface 5 near the floating body 1. On the platform 7, there is a frequency analyzer 12 for analyzing the wave period based on the wave height measured by the wave height meter 11, and a wave analyzer 12 for analyzing the wave period based on the wave height measured by the wave height meter 11. A controller 13 is provided for giving a drive command to the pump 8 to inject ballast water into the floating body 1 based on the period of .
波浪による浮体１の上下変位をＺとし、浮体１
の吃水をｄとし、浮体１の水線面積を吃水ｄの関
数としてAw（ｄ）とし、そして、浮体の排水量
を吃水ｄの関数としてＷ（ｄ）とすると、波浪に
よる浮体１の上下揺固有周期Tzは、下記の式に
よつて表わされる。 The vertical displacement of floating body 1 due to waves is Z, and floating body 1
Let the waterline area of floating body 1 be Aw (d) as a function of the hiccup d, and let W(d) be the displacement of the floating body as a function of the hiccup d. The period Tz is expressed by the following formula.
但し、ｇ：重力加速度
上記から、ポンプ８によつて浮体１内のバラス
ト水を排水し、浮体１の吃水ｄを小さくすると、
その排水量Ｗ（ｄ）は小さくなり、浮体１が台形
状のためその水線面積Aw（ｄ）は大きくなる結
果、浮体１の上下揺固有周期Tzは小さくなる。
一方、ポンプ８によつて浮体１内にバラスト水を
注水し、浮体１の吃水ｄを大きくすると、その排
水量Ｗ（ｄ）は大きくなり、浮体１が台形状のた
めその水線面積Aw（ｄ）は小さくなる結果、浮
体１の上下揺固有周期Tzは大きくなる。 However, g: gravitational acceleration From the above, if the ballast water in the floating body 1 is drained by the pump 8 and the stuttering d of the floating body 1 is reduced,
The displacement W(d) becomes smaller, and since the floating body 1 is trapezoidal, its water line area Aw(d) becomes larger, and as a result, the natural pitching period Tz of the floating body 1 becomes smaller.
On the other hand, when ballast water is injected into the floating body 1 by the pump 8 and the water d of the floating body 1 is increased, the displacement amount W(d) increases, and since the floating body 1 is trapezoidal, its water line area Aw(d ) becomes smaller, and as a result, the natural heave period Tz of the floating body 1 becomes larger.
従つて、波高計１１および周波数解析器１２に
よつて波の周期を計測し、その周期に合致するよ
うに浮体１内へのバラスト水の注排水により浮体
１の上下揺固有周期Tzを調製すれば、浮体１は
広範囲の波の周期に自動的に同調し、波浪エネル
ギーの吸収効率即ち発電効率を高めることができ
る。 Therefore, the period of the waves is measured by the wave height meter 11 and the frequency analyzer 12, and the natural heave period Tz of the floating body 1 is adjusted by injecting ballast water into the floating body 1 so as to match the period. For example, the floating body 1 can automatically synchronize with a wide range of wave cycles, thereby increasing wave energy absorption efficiency, that is, power generation efficiency.
浮体１は、第２図に示すように、その垂直断面
形状を段階式の台形としてもよい。 As shown in FIG. 2, the floating body 1 may have a stepped trapezoidal vertical cross-sectional shape.
以上述べたように、この考案の装置によれば、
浮体の垂直断面形状が台形であり、且つ、波の周
期に合致するように浮体の上下揺固有周期が常に
調整されるため、広範囲の周期の波に対し浮体が
自動的に同調し、従つて、波浪エネルギーの吸収
効率即ち発電効率を高めることができる工業上有
用な効果がもたらされる。
As mentioned above, according to the device of this invention,
The vertical cross-sectional shape of the floating body is trapezoidal, and the vertical natural period of the floating body is constantly adjusted to match the period of the waves, so the floating body automatically synchronizes to waves with a wide range of periods. This brings about an industrially useful effect of increasing wave energy absorption efficiency, that is, power generation efficiency.
第１図はこの考案の装置の一実施態様を示す概
略斜視図、第２図はこの考案の装置における浮体
の他の例を示す正面図、第３図は従来の装置の一
例を示す概略正面図、第４図イ，ロは従来の装置
における浮体の一例を示す斜視図である。図面に
おいて、
１，１……浮体、２……ドルフイン、３……発
電機、４……伝達杆、５……海面、６……基礎
杭、７……プラツトフオーム、８……ポンプ、９
……給排水管、１０……孔、１１……波高計、１
２……周波数解析器、１３……制御器。
Fig. 1 is a schematic perspective view showing one embodiment of the device of this invention, Fig. 2 is a front view showing another example of the floating body in the device of this invention, and Fig. 3 is a schematic front view showing an example of the conventional device. 4A and 4B are perspective views showing an example of a floating body in a conventional device. In the drawings, 1, 1... floating body, 2... dolphin, 3... generator, 4... transmission rod, 5... sea surface, 6... foundation pile, 7... platform, 8... pump, 9
... Water supply and drainage pipe, 10 ... Hole, 11 ... Wave height meter, 1
2... Frequency analyzer, 13... Controller.
Claims (1)
の浮体と、波浪による前記浮体の上下変位をエネ
ルギー源として発電する発電機とからなる浮体式
波浪発電装置において、 前記浮体の垂直断面形状を台形となし、且つ、
前記浮体に対するバラスト水の注排水機構を設
け、前記浮体の近傍の海面に波高計を浮設し、前
記波高計によつて計測された波の周期に基づいて
前記浮体内にバラスト水を注排水することにより
その吃水を変化させ、前記浮体の上下揺固有周期
を波の周期に同調させるようにしたことを特徴と
する浮体式波浪発電装置。[Claims for Utility Model Registration] A floating wave power generation device comprising a floating body for absorbing wave energy floating on the sea surface, and a generator that generates electricity using vertical displacement of the floating body due to waves as an energy source, comprising: The vertical cross-sectional shape is trapezoidal, and
A ballast water injection and drainage mechanism for the floating body is provided, a wave height meter is floated on the sea surface near the floating body, and ballast water is injected into the floating body based on a wave period measured by the wave height meter. 1. A floating wave power generation device, characterized in that the natural period of heave of the floating body is synchronized with the period of waves by changing its water intake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198351U JPH0528387Y2 (en) | 1987-12-26 | 1987-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198351U JPH0528387Y2 (en) | 1987-12-26 | 1987-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01102482U JPH01102482U (en) | 1989-07-11 |
| JPH0528387Y2 true JPH0528387Y2 (en) | 1993-07-21 |
Family
ID=31488866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987198351U Expired - Lifetime JPH0528387Y2 (en) | 1987-12-26 | 1987-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528387Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007272290B2 (en) * | 2006-07-11 | 2011-06-16 | Protean Energy Australia Pty Ltd | Wave energy converter |
-
1987
- 1987-12-26 JP JP1987198351U patent/JPH0528387Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01102482U (en) | 1989-07-11 |
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