JPS6352233B2 - - Google Patents
Info
- Publication number
- JPS6352233B2 JPS6352233B2 JP57065980A JP6598082A JPS6352233B2 JP S6352233 B2 JPS6352233 B2 JP S6352233B2 JP 57065980 A JP57065980 A JP 57065980A JP 6598082 A JP6598082 A JP 6598082A JP S6352233 B2 JPS6352233 B2 JP S6352233B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- piston chamber
- floating body
- power generation
- valve
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
- F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【発明の詳細な説明】 本発明は波力発電ブイの改良に関する。[Detailed description of the invention] The present invention relates to improvements in wave power generation buoys.
浮体に空気ピストン室を取付け、波力による空
気ピストン室内の液面の上下動によつて流出ある
いは流入する空気の流れにより空気タービン発電
機を駆動し発電する波力発電ブイは、一般には第
１図に示すように下面を水中に開放した空気ピス
トン室１を浮体２に取付け、また空気ピストン室
１の上部に空気タービン発電機３を装着し、か
つ、空気ピストン室１の下端部に重錘４を設けた
構造となつている。 A wave power generation buoy, in which an air piston chamber is attached to a floating body and the flow of air flowing out or inflowing due to the vertical movement of the liquid level in the air piston chamber due to wave force, drives an air turbine generator to generate electricity, is generally a wave power generation buoy. As shown in the figure, an air piston chamber 1 whose bottom surface is open underwater is attached to a floating body 2, an air turbine generator 3 is attached to the upper part of the air piston chamber 1, and a weight is attached to the lower end of the air piston chamber 1. It has a structure with 4.
また、ブイは図示しないが海底の沈錘にに係留
索により係留されて海上を浮遊するように設けら
れる。 Further, although not shown, the buoy is moored to a sinker on the seabed with a mooring line and is provided so as to float on the sea.
波力発電ブイはその浮力による浮体としての上
下方向の固有振動周期が波の周期とほぼ一致した
とき、および、ピストン室内の液柱の上下方向の
固有振動周期が波の周期とほぼ一致したときに共
振し、空気ピストン室内の液面の上下動の衝程が
極大となり発電能力も極大となる。 A wave power generation buoy is a floating body due to its buoyancy when its vertical natural vibration period almost matches the wave period, and when the vertical natural vibration period of the liquid column in the piston chamber almost matches the wave period. The liquid level in the air piston chamber resonates, and the vertical movement of the liquid level in the air piston chamber reaches its maximum, and the power generation capacity also reaches its maximum.
また空気ピストン室に流出入する空気量は 衝程×空気ピストン室の横断面積 となる。 Also, the amount of air flowing in and out of the air piston chamber is Stroke × cross-sectional area of air piston chamber becomes.
従つて、発電能力を大きくとろうとするブイを
設置する水域の波の周期に浮体の浮力による周期
およびピストン室内の液柱の周期が同調するよう
にするとともに、大径の空気ピストン室が必要と
なる。また、流出空気流のみを利用し、構造を簡
素化しようとすると更に大径のピストン室が必要
となる。 Therefore, it is necessary to make sure that the period due to the buoyancy of the floating body and the period of the liquid column in the piston chamber are synchronized with the wave period of the water area where the buoy is installed to increase the power generation capacity, and also to have a large diameter air piston chamber. Become. Further, if an attempt is made to simplify the structure by utilizing only the outflow air flow, a piston chamber with a larger diameter will be required.
従つて発電能力を大きくするため周期を波の周
期と同調可能な所要の範囲にとるようにし、さら
に大径のピストン室にしようとすれば重量が大き
くなり、大きい断面積の浮体を必要とし、ブイは
大型化する傾向にある。 Therefore, in order to increase the power generation capacity, the cycle should be set within a required range that can be synchronized with the wave cycle, and if a piston chamber with a larger diameter is attempted, the weight will increase and a floating body with a large cross-sectional area will be required. Buoys tend to be larger.
本発明は、空気ピストン室の浮体部分の内径を
尾筒部分の内径よりも大きくし、大径のピストン
室の割には軽量な浮体とし、従つて、小さい吃水
面積の浮体で所要の周期がとれるようにし、浮体
の形状が小型の割には大きな発電能力を得ること
のできるようにし、発電機部は従来の４弁式より
効率のよい３弁式の発電機部とした高効率の波力
発電ブイに関するものである。 The present invention makes the inner diameter of the floating body part of the air piston chamber larger than the inner diameter of the transition piece part, and makes the floating body lightweight considering the large diameter piston chamber. The shape of the floating body is small, but it has a large power generation capacity, and the generator part is a 3-valve type generator that is more efficient than the conventional 4-valve type. It concerns power generation buoys.
以下図面に従つて詳述する。 The details will be explained below with reference to the drawings.
第１図は従来例の直円筒型のピストン室を有す
る波力発電ブイである。 FIG. 1 shows a conventional wave power generation buoy having a right cylindrical piston chamber.
第２図は従来こころみられたピストン室の下方
を末広がりに拡大し、浮標の上下動により小径の
ピストン室の液面の上下動の衝程を大きくなるよ
うに計画されたものである。 Figure 2 shows a plan in which the lower part of the piston chamber, which was conventionally seen, is enlarged to widen toward the end, and the vertical movement of the buoy increases the vertical movement of the liquid level in the small-diameter piston chamber.
第３図は本発明の実施例を示す切断正面図で、
図中イ部の発電機部は本実施例においては第４図
ならびに第５図に示すような構造となつている。 FIG. 3 is a cutaway front view showing an embodiment of the present invention.
In this embodiment, the generator section shown in part A in the figure has a structure as shown in FIGS. 4 and 5.
図示するように、本発明は、下面を水中に開放
した空気ピストン室１を浮体２に取付け、また空
気ピストン室１の上部に空気タービン発電機３を
装着し、かつ、空気ピストン室１の下端部に重錘
４を設けたことにおいては従来のこの種波力発電
ブイと異なるところはない。 As shown in the figure, in the present invention, an air piston chamber 1 whose lower surface is open underwater is attached to a floating body 2, an air turbine generator 3 is attached to the upper part of the air piston chamber 1, and the lower end of the air piston chamber 1 is attached to a floating body 2. There is no difference from conventional wave power generation buoys of this type in that a weight 4 is provided in the section.
本発明は、空気ピストン室１の浮体２を装着し
た部分１′の内径D1を尾筒部１″の内径D2より大
きくしたものでピストン室１の大径部と小径部の
継ぎ目は比較的なだらかにしたものである。 In the present invention, the inner diameter D 1 of the part 1' of the air piston chamber 1 on which the floating body 2 is attached is made larger than the inner diameter D 2 of the tail tube part 1'', and the joint between the large diameter part and the small diameter part of the piston chamber 1 is compared. It's a kind of sloppy design.
この種ブイは、その発電能力の極大点は、前述
したように、浮力による浮体の上下方向の固有振
動周期T1と空気ピストン室１内の液柱の上下方
向の固有振動周期T2とが波の周期とほぼ一致す
る状態となつたときであり、この周期T1とT2と
は一般的に次の式で求められる。 As mentioned above, the maximum power generation capacity of this type of buoy is determined by the vertical natural vibration period T 1 of the floating body due to buoyancy and the vertical natural vibration period T 2 of the liquid column in the air piston chamber 1. This is when the period almost matches the wave period, and the periods T 1 and T 2 are generally determined by the following equations.
式中 W1：浮体の重量
W2：空気ピストン室内の平均海水の重量
Ｓ：浮体の吃水面積
ｇ：重力の加速度
Ｐ：海水の密度
ｌ：空気ピストン室の長さ
従つて本発明のように空気ピストン室１の尾筒
部１″における内径D2を浮体部１′の内径D1より
小さくし空気ピストン室１の海水柱の重量W2を
少なくすることは、所定のT1値を保持するうえ
で、浮体の吃水面積Ｓを小さくし、更に、浮体の
重量W1も減少させることとなる。 In the formula, W 1 : Weight of the floating body W 2 : Average weight of seawater in the air piston chamber S : Hydration area of the floating body g : Acceleration of gravity P : Density of seawater l : Length of the air piston chamber Therefore, as in the present invention, By making the inner diameter D 2 of the tail tube section 1'' of the air piston chamber 1 smaller than the inner diameter D 1 of the floating body section 1' and reducing the weight W 2 of the sea water column of the air piston chamber 1, the predetermined T 1 value is maintained. In doing so, it is necessary to reduce the swamp area S of the floating body and further reduce the weight W1 of the floating body.
従つて、浮体部１′の内径D1を尾筒部１″の内
径D2より大きくとることは発電能力に関係する
空気流量を大きくとれるばかりでなく、小形軽量
の灯浮標となりその経済効果は大きい。 Therefore, by making the inner diameter D 1 of the floating body part 1' larger than the inner diameter D 2 of the tail tube part 1'', not only can the air flow rate related to power generation capacity be increased, but also the light buoy can be made small and lightweight, and its economic effect is big.
また、波の周期は２秒〜４秒程度が普通であ
り、実験結果ではD2＜D1＜1.7D2の範囲であれば
D2における海水の流通速度もさして速いもので
なくD1がD2より大きいための水流抵抗の増加に
よる影響は少く、発電能力がD2の径で直円筒形
にするより増大する。 In addition, the period of the wave is usually about 2 seconds to 4 seconds, and experimental results show that if D 2 < D 1 < 1.7D 2
The flow rate of seawater in D 2 is also not very fast, and since D 1 is larger than D 2 , the effect of increased water flow resistance is small, and the power generation capacity is increased compared to a right cylindrical shape with a diameter of D 2 .
つぎに、本発明の実施例として第４図および第
５図で示した発電機部はつぎのような構成となつ
ている。 Next, the generator section shown in FIGS. 4 and 5 as an embodiment of the present invention has the following configuration.
空気タービン発電機３の下部に断面Ｖ字状の高
圧室４が設けられ、その１対の側壁６，６′は傾
斜して高圧室５の底部５′で交り、その底部で１
枚の弁７の下縁７′が蝶番状に係止される。弁７
は高圧室５の内側より一方の側壁６′の外気に通
じる空気孔８と他方の側壁６の空気ピストン室１
に通じる空気孔９に交互に当接して空気孔８，９
を開閉するように設けられる。また、低圧室１
０、高圧室５を空気ピストン室１に結ぶ空気通路
１１と、低圧室１０、高圧室５を外気に結ぶ空気
通路１２とは第４図および第５図に示すように設
けられる。 A high pressure chamber 4 having a V-shaped cross section is provided at the bottom of the air turbine generator 3 , and a pair of side walls 6, 6' are inclined and intersect at the bottom 5' of the high pressure chamber 5.
The lower edge 7' of the valve 7 is hinged. Valve 7
An air hole 8 communicating with the outside air in one side wall 6' from the inside of the high pressure chamber 5 and an air piston chamber 1 in the other side wall 6.
The air holes 8, 9 alternately abut on the air holes 9 leading to the
It is installed to open and close. In addition, low pressure chamber 1
0. An air passage 11 connecting the high pressure chamber 5 to the air piston chamber 1, and an air passage 12 connecting the low pressure chamber 10 and the high pressure chamber 5 to the outside air are provided as shown in FIGS. 4 and 5.
これによつて、浮体２が波面の上昇で上昇する
ときはピストン室１の下端の開口部１３が波圧の
影響の少ない充分深い水面下方に開口している
為、ピストン室１内の液面は波面の上下に拘らず
ほぼ一定水準に止り、その為、その液面はピスト
ン室１内を下降する。 As a result, when the floating body 2 rises due to the rise of the wave surface, the opening 13 at the lower end of the piston chamber 1 opens sufficiently deep below the water surface where there is less influence of wave pressure, so the liquid level in the piston chamber 1 is lowered. remains at a substantially constant level regardless of the top and bottom of the wave surface, and therefore the liquid level descends within the piston chamber 1.
従つてピストン室１内の空気圧は負圧となり、
弁１４は開、弁１５は閉となり（鎖線図示参照）、
高圧室５内の弁７は負圧に引かれ空気孔９側に倒
れて外気が点線矢印で示すように流入し、流入空
気はタービン発電機３を駆動して空気ピストン室
１内に流入する。 Therefore, the air pressure inside the piston chamber 1 becomes negative pressure,
Valve 14 is open, valve 15 is closed (see chain line diagram),
The valve 7 in the high pressure chamber 5 is drawn to negative pressure and falls toward the air hole 9 side, and outside air flows in as shown by the dotted arrow, and the incoming air drives the turbine generator 3 and flows into the air piston chamber 1. .
浮体２が波面の下降で下降する時は空気ピスト
ン室１の液面は前記と同様の理由で上昇し、この
為、空気ピストン室１の空気は圧縮され、弁１４
は閉じ、高圧室５の弁７は加圧空気に押されて回
動し空気孔８側に倒れる。 When the floating body 2 descends due to the lowering of the wave surface, the liquid level in the air piston chamber 1 rises for the same reason as described above, and for this reason, the air in the air piston chamber 1 is compressed, and the valve 14
is closed, and the valve 7 of the high pressure chamber 5 is pushed by the pressurized air, rotates, and falls toward the air hole 8 side.
従つて、流出空気流は実線矢印で示すように流
れてタービン発電機３を駆動して弁１５を押し開
いて外気に流出する。 Therefore, the outflow air flows as shown by the solid arrow, drives the turbine generator 3, pushes open the valve 15, and flows out into the outside air.
この機構は従来の４弁式の発電機部（図示せ
ず）と比べ空気流が直線的で、空気抵抗の少ない
高効率の発電が得られ、弁の数も３枚と少なく、
それだけ弁の故障も少ない等の特徴がある。 Compared to the conventional four-valve generator section (not shown), this mechanism has a more linear air flow, provides highly efficient power generation with less air resistance, and has fewer valves (three).
It has characteristics such as fewer valve failures.
尚、弁７に第６図に示すように調節可能な捻子
式カウンターウエイト１６を設ければ弁７の動作
をより鋭敏なものとすることができる。 Incidentally, if the valve 7 is provided with an adjustable screw-type counterweight 16 as shown in FIG. 6, the operation of the valve 7 can be made more sensitive.
第１図は従来の直円筒型のピストン室を有する
波力発電ブイの要部切断正面図、第２図はピスト
ン室の下方を末広がりに拡大した従来形式の波力
発電ブイの要部切断正面図、第３図は本発明にか
かる波力発電ブイの実施例で要部を切断した正面
図、第４図は第３図におけるイ部の切断正面図、
第５図は第４図のロ―ロ部切断平面図、第６図は
弁７の別の実施例を示す。
１……空気ピストン室、２……浮体、３……空
気タービン発電機、４……重錘、D1……空気ピ
ストン室の浮体部の内径、D2……尾筒部の内径。
Figure 1 is a cutaway front view of the main part of a conventional wave power generation buoy with a right cylindrical piston chamber, and Figure 2 is a cutaway front view of the main part of a conventional wave power generation buoy in which the lower part of the piston chamber is enlarged. Figure 3 is a front view of an embodiment of the wave power generation buoy according to the present invention, with main parts cut away, Figure 4 is a cutaway front view of part A in Figure 3,
5 is a cutaway plan view of the roller portion of FIG. 4, and FIG. 6 shows another embodiment of the valve 7. 1... Air piston chamber, 2... Floating body, 3 ... Air turbine generator, 4... Weight, D 1 ... Inner diameter of floating body part of air piston chamber, D 2 ... Inner diameter of tail tube part.
Claims (1)
に取付け、ピストン室内の液面の移動による空気
流により空気タービンを駆動するようにした波力
発電ブイにおいて、ピストン室は浮体部のピスト
ン室の内径を尾筒部の内径より大きくし、発電機
部は空気タービンの下部に断面Ｖ字状の高圧室を
設け、その断面Ｖ字状を構成する１方の壁には空
気ピストン室に通じる空気孔、他方の壁には外気
に通じる空気孔を設け、該高圧室内に１枚の弁を
その下縁が断面Ｖ字状の下縁に沿うように蝶番状
に係止し、前記２つの空気孔を１つの弁で交互に
開閉するようにしたことを特徴とする波力発電ブ
イ。1. In a wave power generation buoy in which an air piston chamber whose bottom surface is open underwater is attached to a floating body and an air turbine is driven by the air flow caused by the movement of the liquid level in the piston chamber, the piston chamber is the inner diameter of the piston chamber of the floating body. is larger than the inner diameter of the transition piece, and the generator section has a high pressure chamber with a V-shaped cross section at the bottom of the air turbine, and one wall that makes up the V-shaped cross section has an air hole that communicates with the air piston chamber. , an air hole communicating with the outside air is provided in the other wall, a valve is hinged in the high pressure chamber so that its lower edge follows the lower edge of the V-shaped cross section, and the two air holes A wave power generation buoy characterized by being configured to alternately open and close with one valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57065980A JPS58183872A (en) | 1982-04-19 | 1982-04-19 | Buoy generating electricity by wave power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57065980A JPS58183872A (en) | 1982-04-19 | 1982-04-19 | Buoy generating electricity by wave power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58183872A JPS58183872A (en) | 1983-10-27 |
| JPS6352233B2 true JPS6352233B2 (en) | 1988-10-18 |
Family
ID=13302653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57065980A Granted JPS58183872A (en) | 1982-04-19 | 1982-04-19 | Buoy generating electricity by wave power |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58183872A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62118067A (en) * | 1985-11-15 | 1987-05-29 | ザ・エバ−グリ−ン・ピアル | Wave type energy device |
| JP4112547B2 (en) * | 2004-09-30 | 2008-07-02 | 東陽設計工業株式会社 | Wave power generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566077A (en) * | 1979-06-27 | 1981-01-22 | Yasuhiro Manabe | Generation device with resistance plate utilizing up and down movement of wave |
-
1982
- 1982-04-19 JP JP57065980A patent/JPS58183872A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58183872A (en) | 1983-10-27 |
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