JP2511048Y2 - Jellyfish inflow prevention device - Google Patents
Jellyfish inflow prevention deviceInfo
- Publication number
- JP2511048Y2 JP2511048Y2 JP1990100221U JP10022190U JP2511048Y2 JP 2511048 Y2 JP2511048 Y2 JP 2511048Y2 JP 1990100221 U JP1990100221 U JP 1990100221U JP 10022190 U JP10022190 U JP 10022190U JP 2511048 Y2 JP2511048 Y2 JP 2511048Y2
- Authority
- JP
- Japan
- Prior art keywords
- net
- jellyfish
- intake
- sea
- 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.)
- Expired - Fee Related
Links
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
- Y02E10/20—Hydro energy
Landscapes
- Catching Or Destruction (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、原子力発電所及び火力発電所等のように、
多量の海水を冷却水として利用している施設の取水口
に、くらげ等の浮遊物が流入するのを未然に防止する装
置に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention is applied to a nuclear power plant, a thermal power plant, and the like.
The present invention relates to a device that prevents floating substances such as jellyfish from flowing into the intake of a facility that uses a large amount of seawater as cooling water.
（従来の技術） 現在、原子力発電所及び火力発電所においては、海よ
り冷却装置まで水路（取水路）を設け、強力なポンプで
海水を導入してタービン排気（タービンを回転させたあ
との低圧化した高温の蒸気）を冷却した後、この水を海
へ放流している。(Prior art) At present, in nuclear power plants and thermal power plants, a water channel (intake channel) is installed from the sea to the cooling device, and seawater is introduced by a powerful pump to exhaust the turbine exhaust (low pressure after rotating the turbine). This water is discharged to the sea after cooling the high temperature steam that has turned into steam.
このように強力なポンプで海水を導入すると、冷却水
の取水路の入口（取水口）付近のくらげその他の浮遊物
が海水と共に取水口に流入し、その結果それらの浮遊物
が冷却装置の濾器の目につまって冷却装置を停止させた
り、さらには発電装置をも停止させてしまうおそれがあ
った。When seawater is introduced by such a powerful pump, jellyfish and other suspended matter near the inlet (intake) of the cooling water intake channel flow into the intake together with seawater, and as a result, those suspended matter are filtered by the cooling device filter. There is a possibility that the cooling device may be stopped or the power generation device may also be stopped due to the eyes.
そのため従来は、くらげ等の浮遊物の流入を防止する
ために、鉄格子状のスクリーンに目づまりした浮遊物を
動力又は人力によりすくい上げる除塵装置を取水口に設
置していたが、浮遊物の中でもくらげが異常発生して海
面がくらげ一色になるほど大量に発生した場合は、前記
の除塵装置では一部分しかすくい上げることが出来ない
から除塵装置の役目を果たさなくなってしまう。このた
め大量のくらげ群が取水路及び冷却装置に流入し、その
結果、冷却装置及び発電装置を停止させて、家庭、工
場、病院、交通機関、交通信号等が数時間、あるいは数
日も麻痺して停電パニックを起こす恐れがあった。Therefore, in the past, in order to prevent the inflow of suspended solids such as jellyfish, a dust removal device that scoops up suspended solids on an iron grid screen by power or human power was installed at the water inlet, When a large amount of water is generated due to an abnormal occurrence of the sea surface, the dust removing device cannot serve as a dust removing device because the dust removing device cannot partially pick up the dust. For this reason, a large amount of jellyfish flow into the intake channel and cooling system, and as a result, the cooling system and power generation system are shut down, and homes, factories, hospitals, transportation facilities, traffic signals, etc. are paralyzed for hours or even days. There was a risk of causing a power outage panic.
このため従来は、数時間おきに取水口を巡回したり、
テレビカメラで監視するなどして、くらげ群の襲来があ
った時には、人力で網その他の器具によってくらげを陸
上げしていたが、このような処置では大量のくらげの来
襲時にはとても間に合うものではないし、また陸上げし
たくらげは悪臭を発するため臭公害にもなりかねないと
いう状態であった。For this reason, conventionally, you have to go around the intake every few hours,
When a jellyfish group was invaded by monitoring with a TV camera, the jellyfish were manually lifted up by a net or other device, but such a procedure is not very timely when a large number of jellyfish are attacked. Also, the jellyfish that had been landed had a bad odor and could be odor pollution.
本出願人は先に上述の問題点を解決するために第３図
に示すようなくらげ流入防止装置（実開昭56-51862号）
を提案した。The present applicant has previously proposed a jellyfish inflow prevention device as shown in FIG. 3 (Shokai 56-51862) to solve the above problems.
Suggested.
以下、図面についてその従来装置を説明する。 The conventional device will be described below with reference to the drawings.
図中１は海面、２は海底、３は岸壁、４は岸壁３に設
けた冷却水用の取水口、4aは取水路である。In the figure, 1 is the sea surface, 2 is the seabed, 3 is a quay wall, 4 is an intake port for cooling water provided in the quay wall, and 4a is an intake channel.
このくらげ流入防止装置は、取水口４の前方の海面１
上に取水口４を囲むように桟橋11を支柱12を介して突設
し、この桟橋11の外側の海底２上にそれぞれ適当な間隔
をおいて固定アンカー６を設置し、桟橋11上の固定具５
と外側の固定アンカー６との間に索７を張設し、この索
７に沿って前下がりに約45°に傾斜した網８を海上から
海底２の近くまで張設し、この網の下縁8aと海底２との
間に取水口４に流入する水が通過できる下部開口９が設
けられている。通常この下部開口９の高さは１〜2mが適
当であり、また網８の目の大きさは90m/m目前後が好適
である。なお13は桟橋11上に立設した手すりである。This jellyfish inflow prevention device is provided on the sea surface 1 in front of the intake port 4.
A jetty 11 is projected from above via a pillar 12 so as to surround the intake 4, and fixed anchors 6 are installed on the seabed 2 outside the jetty 11 at appropriate intervals, respectively, and fixed on the jetty 11. Ingredient 5
A rope 7 is stretched between the outer anchor and the outer fixed anchor 6, and a net 8 inclined at an angle of about 45 ° is stretched downward along the rope 7 from the sea to the vicinity of the seabed 2. A lower opening 9 through which the water flowing into the intake 4 can pass is provided between the edge 8a and the seabed 2. Usually, the height of the lower opening 9 is appropriately 1 to 2 m, and the size of the mesh 8 is preferably around 90 m / m. Note that 13 is a handrail standing on the pier 11.
また第４図は比較的に新しい発電所の取水口のくらげ
流入防止装置を示すもので、図中前記符号と同一の符号
は同等のものを示している。Further, FIG. 4 shows a jellyfish inflow prevention device at a water intake of a relatively new power plant, and the same reference numerals as those used in the drawing denote the same elements.
この第４図の新しい点は、取水口４の両側の適当な位
置に遮水壁10を岸壁３の垂直面に対して直角に突設する
と共に、これら左右の遮水壁10間の開口部に前記網８に
よるくらげ流入防止装置を設けた点である。The new point of this FIG. 4 is that the impermeable walls 10 are projected at right angles on both sides of the intake 4 at right angles to the vertical plane of the quay 3, and the openings between these left and right impermeable walls 10 are provided. In addition, a jellyfish inflow prevention device using the net 8 is provided.
（考案が解決しようとする課題） 上述のように従来のくらげ流入防止装置は、来襲した
くらげ群を網によって塞ぎ止めると共に、網に沿って流
れる自然潮流によって域外へ流出させるように設計され
ている。しかしながらくらげは海水中の表層、中層域の
みに分布するのではなく、底層域にも分布している。特
に夜間は表、中、底層域に等分に分布していることが最
近のくらげの生態研究に関する文献にも発表されてい
る。したがって表、中層域のくらげは網８によって塞ぎ
止められて取水口４への流入は防止されるが、底層域の
くらげは網８の下部開口９より0.2〜0.3m/secの取水流
れに乗って取水口４に流入し、その量が除塵装置の能力
を上廻った場合には冷却装置が有効でなくなる結果、発
電装置が停止して停電となり、社会的にも重大な問題を
引き起こすという恐れがある。(Problems to be solved by the invention) As described above, the conventional jellyfish inflow prevention device is designed to block the jellyfish group that has hit by the net and to let it flow out of the region by the natural tidal current flowing along the net. . However, jellyfish is not only distributed in the surface and middle layers of seawater, but also in the bottom layer. Especially in the nighttime, it has been announced in the literature concerning the ecological research of jellyfish that they are evenly distributed in the front, middle and bottom layers. Therefore, the jellyfish in the front and middle areas is blocked by the net 8 to prevent the inflow to the intake port 4, but the jellyfish in the bottom area rides on the intake flow of 0.2 to 0.3 m / sec from the lower opening 9 of the net 8. If the amount exceeds the capacity of the dust removing device, the cooling device becomes ineffective, and as a result, the power generating device stops and power failure occurs, which may cause serious social problems. There is.
また第３図に示す装置は、岸壁３より海側に突出する
桟橋11等を支柱12を介して設けなければならず、また第
４図に示す装置は、取水口４の左右両側に適当な間隔を
おいて遮水壁10を設けなければならないため、装置の構
築にコストが嵩むと共に、手数も多くかかるという問題
点があった。Further, the device shown in FIG. 3 must be provided with a pier 11 and the like projecting to the sea side from the quay 3 through the columns 12, and the device shown in FIG. Since the impermeable walls 10 must be provided at intervals, there is a problem in that the cost for building the device increases and the number of steps is also large.
（課題を解決するための手段） 上述の問題点を解決するため本考案においては、岸壁
に設けた冷却用取水口前方の海上において、取水口を囲
むように海上から海底近くまで前下がりに傾斜した網を
張設し、この網の下縁と海底との間に下部開口を設ける
と共に、その網の満潮時のレベルと、干潮時のレベル
に、それぞれ浮子連を設けてくらげ流入防止装置を構成
する。(Means for Solving the Problem) In order to solve the above-mentioned problems, in the present invention, at the sea in front of the cooling water intake provided on the quay, the water is inclined forward from the sea to near the seabed so as to surround the water intake. The net is stretched, and a lower opening is provided between the bottom edge of the net and the seabed.Float reams are provided at the high tide level and the low tide level of the net to prevent jellyfish inflow. Configure.
（作用） 本考案装置は上述のように、岸壁に設けた冷却用取水
口前方の海上において、取水口を囲むように海上から海
底近くまで前下がりに傾斜した網を張設し、この網の下
縁と海底との間に下部開口を設けると共に、その網の満
潮時のレベルと、干潮時のレベルに、それぞれ浮子連を
設けたから、岸壁に直接開口した取水口全面に、桟橋等
の構築物のない場合においても、適当な位置に必要な大
きさで海面より海底に所定の角度で網を張設することが
できる。又潮の干満に対しても、干潮時は下段の浮子連
によって網を約45°の角度で保持することができ、満潮
時には上段の浮子連によって同様に約45°の網角度を保
つことができる。勿論この浮子はくらげ群が来襲し、網
が全閉状態となった場合も、水没しないだけの浮力をも
つように設計されている。(Operation) As described above, the device of the present invention stretches a net slanting downward from the sea to near the bottom of the sea in front of the cooling water intake on the quay so as to surround the water intake. Since a lower opening is provided between the lower edge and the seabed, and floating floats are provided at the high tide level and the low tide level of the net, structures such as piers are built over the entire intake opening directly on the quay. Even in the case where there is no case, a net can be stretched at a predetermined angle at a proper position on the seabed from the sea surface at a predetermined angle. In addition, even when the tide is low, the nets can be held at an angle of about 45 ° by the lower floats at the time of low tide, and the net angle of about 45 ° can be maintained at the same time by the floats at the top at high tide. it can. Of course, this float is designed to have enough buoyancy so that it will not be submerged in the event of a jellyfish attack and the net is fully closed.
すなわち本考案装置によれば、海底の網固定用アンカ
ーと、網上縁及びその下方に装着された上、下２段の浮
子連の浮力と、これら浮子連と岸壁上の固定具とを連結
するロープの張力によって、網は常に海底に対し所定の
角度（約45°）を保持することができる。このためくら
げ群の来襲時に完全にこれを塞ぎ止め、このくらげを自
然潮流によって排除すると共に、取水口に流入すること
を防止してくらげによる発電所の冷却装置の停止およ
び、それによって発電装置が停止する被害を未然に防止
することができる。That is, according to the device of the present invention, the anchors for fixing the net on the seabed, the buoyancy of the upper and lower two stages of the floating floats attached to the upper edge of the net and the lower part thereof, and the floating fixtures and the fixtures on the quay are connected. Due to the tension of the rope, the net can always maintain a certain angle (about 45 °) with the seabed. Therefore, when a jellyfish group attacks, it is completely blocked, the jellyfish is eliminated by natural tidal current, and the jellyfish is prevented from flowing into the water intake. It is possible to prevent the damage from stopping.
（実施例） 以下第１図および第２図について本考案の一実施例を
説明する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.
図中前記符号と同一の符号は同等のものを示す。すな
わち図中１は満潮時の海面、1aは干潮時の海面、２は海
底、３は岸壁、４は岸壁３に設けた冷却水の取水口、4a
は取水路である。In the figure, the same reference numerals as those used in the previous description denote the same elements. That is, in the figure, 1 is the sea surface at high tide, 1a is the sea surface at low tide, 2 is the seabed, 3 is the quay wall, 4 is the cooling water intake port provided on the quay wall, and 4a.
Is an intake channel.
本実施例においては、冷却用取水口４の前方の海底２
上に、取水口４を囲むように、第１図（ａ）に示すよう
に適当な円弧上に、適当な間隔をおいて固定アンカー６
を設置し、これら各固定アンカー６と岸壁３上に突設し
た固定具５との間を索７により連結すると共に、この索
７に沿って前下がりに約45°に傾斜した網８を海上から
海底２の近くまで張設し、この網の下縁8aと海底２との
間に取水口４に流入する水が通過できる下部開口９を設
ける。通常この下部開口９の高さは１〜2mが適当であ
り、また網８の目の大きさは90m/m目前後が好適であ
る。In this embodiment, the seabed 2 in front of the cooling water intake 4
A fixed anchor 6 is provided on the upper part of the upper surface of the base plate, on an appropriate arc so as to surround the water intake port 4 and on an appropriate arc as shown in FIG.
The fixed anchors 6 and the fixtures 5 projecting on the quay 3 are connected by the ropes 7, and along the ropes 7, a net 8 inclined at an angle of about 45 ° to the front is slid at sea. From the bottom of the net to the vicinity of the seabed 2, and a lower opening 9 through which the water flowing into the intake 4 can pass is provided between the lower edge 8a of the net and the seabed 2. Usually, the height of the lower opening 9 is appropriately 1 to 2 m, and the size of the mesh 8 is preferably around 90 m / m.
また前記網８の満潮時のレベルHWLと、干潮時のレベ
ルLWLに、それぞれロープ等によって多数の浮子を直列
に連結した浮子連14を水平位置に固着すると共に、特に
干潮時のレベルLWLに設けた下段の浮子連14と前記固定
具５との間にも索７とは別に索15を張設して、干潮時に
おいても網８が約45°に張設されるようにする。Further, a floating float string 14 in which a large number of floats are connected in series by ropes or the like is fixed to a horizontal position at the level HWL at high tide of the net 8 and at a level LWL at low tide, and is provided especially at the level LWL at low tide. In addition to the rope 7, a rope 15 is stretched between the lower floating float 14 and the fixture 5 so that the net 8 can be stretched at about 45 ° even at low tide.
すなわち索７は満潮時に上段の浮子連14が海面１に浮
上して網８が前下がりに約45°の傾斜で張設されるよう
に張りわたされ、索15は干潮時に下段の浮子連14が海面
1aに浮上することにより、この下段の浮子連14より下方
の網８が前下がりに約45°の傾斜で張設される長さにし
て張りわたされるようにする。That is, the ropes 7 are stretched so that the upper floating floats 14 float on the sea surface 1 at high tide and the nets 8 are stretched at an inclination of about 45 ° to the front, and the ropes 15 are lower floating floats 14 at low tide. The sea level
By levitating to 1a, the net 8 below the lower float ream 14 is stretched to a length of about 45 ° inclined forward and downward.
（考案の効果） 本考案装置は上述のように、岸壁３に設けた冷却用取
水口４の前方の海上において、取水口４を囲むように海
上から海底２の近くまで前下がりに傾斜した網８を張設
し、この網８の下縁8aと海底２との間に下部開口９を設
けると共に、その網８の満潮時のレベルHWLと、干潮時
のレベルLWLに、それぞれ浮子連14を設けたから、岸壁
３に直接開口した取水口４の前面に、桟橋等の構築物の
ない場合においても、適当な位置に必要な大きさで海面
より海底に所定の角度で網を張設することができる。又
潮の干満に対しても、干潮時は下段の浮子連14によって
網８を約45°の角度で保持することができ、満潮時には
上段の浮子連14によって同様に約45°の網角度を保つこ
とができる。勿論この浮子連はくらげ群が来襲し、網８
が全閉状態となった場合も、水没しないだけの浮力をも
つように設計されている。(Effect of the Invention) As described above, the device of the present invention is a net inclined forward from the sea to the vicinity of the seabed 2 so as to surround the water intake 4 in front of the cooling water intake 4 provided on the quay 3. 8 is stretched, a lower opening 9 is provided between the lower edge 8a of the net 8 and the seabed 2, and the floats 14 are respectively attached to the level HWL at high tide and the level LWL at low tide of the net 8. Since it has been installed, even if there is no structure such as a jetty on the front of the intake 4 that opens directly to the quay 3, a net can be laid at a proper angle and above the sea surface at a predetermined angle, even if there is no structure such as a jetty. it can. Also, even when the tide is low, the net 8 can be held at an angle of about 45 ° by the lower floating ream 14 at the time of low tide, and at the time of high tide, the net angle of about 45 ° can be similarly maintained by the upper floating ream 14. Can be kept. Of course, this floating child was attacked by jellyfish, and net 8
It is designed to have enough buoyancy so that it will not be submerged in water even when it is fully closed.
すなわち本考案装置によれば、海底２の網固定用アン
カー６と、網８の上縁及びその下方に装着された上、下
２段の浮子連14の浮力と、これら浮子連14と岸壁３上の
固定具５とを連結する索7,15の張力によって、網８は常
に海底２に対し所定の角度（約45°）を保持することが
できる。このため本考案によれば、くらげ群の来襲時に
完全にこれを塞ぎ止め、このくらげを自然潮流によって
排除すると共に、取水口４に流入することを防止してく
らげによる発電所の冷却装置の停止および、それによっ
て発電装置が停止する被害を未然に防止することができ
るという実用上すぐれた効果が得られる。That is, according to the device of the present invention, the buoyancy of the net fixing anchors 6 on the seabed 2, the upper and lower two stages of the floating reams 14 attached to the upper edge of the net 8 and below the nets 8, and the floating reams 14 and the quay 3 The net 8 can always maintain a predetermined angle (about 45 °) with respect to the seabed 2 by the tension of the ropes 7 and 15 connecting the upper fixtures 5. Therefore, according to the present invention, when a jellyfish group is attacked, it is completely blocked, the jellyfish is eliminated by a natural tidal current, and the jellyfish is prevented from flowing into the intake port 4, thereby stopping the cooling device of the power plant by the jellyfish. Moreover, a practically excellent effect that damage due to the power generator stopping can be prevented is obtained.
第１図（ａ）は本考案の一実施例を示す平面図、 同図（ｂ）は正面図 同図（ｃ）はその側面図、 第２図は第１図（ｃ）の要部を示す詳細断面図、 第３図（ａ）は従来装置の平面図、 同図（ｂ）はその正面図、 同図（ｃ）はその側面図、 第４図（ａ）は他の従来装置の平面図、 同図（ｂ）はその正面図、 同図（ｃ）はその側面図である。 １……満潮時の海面、1a……干潮時の海面 ２……海底、３……岸壁 ４……取水口、4a……取水路 ５……固定具、６……固定アンカー ７……索、８……網 ９……下部開口、10……遮水壁 11……桟橋、12……支柱 13……手すり、14……浮子連 15……索 FIG. 1 (a) is a plan view showing an embodiment of the present invention, FIG. 1 (b) is a front view, FIG. 1 (c) is a side view thereof, and FIG. 2 is a main part of FIG. 1 (c). FIG. 3 (a) is a plan view of the conventional device, FIG. 3 (b) is a front view thereof, FIG. 3 (c) is a side view thereof, and FIG. The plan view, the same figure (b) is the front view, and the same figure (c) is the side view. 1 …… Sea surface at high tide, 1a …… Sea surface at low tide 2 …… Sea floor, 3 …… Quay 4 …… Intake port, 4a …… Intake channel 5 …… Fixing fixture, 6 …… Fixed anchor 7 …… Rope , 8 ... Net 9 ... Lower opening, 10 ... Impermeable wall 11 ... Pier, 12 ... Pillar 13 ... Handrail, 14 ... Float ream 15 ... Rope
Claims (1)
いて、取水口を囲むように海上から海底近くまで前下が
りに傾斜した網を張設し、この網の下縁と海底との間に
下部開口を設けると共に、その網の満潮時のレベルと、
干潮時のレベルに、それぞれ浮子連を設けたことを特徴
とするくらげ流入防止装置。1. At the sea in front of the cooling water intake provided on the quay, a net is installed so as to surround the intake so as to surround the water intake from the sea to the bottom of the sea, and between the lower edge of the net and the seabed. In addition to providing a lower opening at the level of the net at high tide,
A jellyfish inflow prevention device, which is equipped with float chains at low tide levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990100221U JP2511048Y2 (en) | 1990-09-27 | 1990-09-27 | Jellyfish inflow prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990100221U JP2511048Y2 (en) | 1990-09-27 | 1990-09-27 | Jellyfish inflow prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0457520U JPH0457520U (en) | 1992-05-18 |
| JP2511048Y2 true JP2511048Y2 (en) | 1996-09-18 |
Family
ID=31842710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990100221U Expired - Fee Related JP2511048Y2 (en) | 1990-09-27 | 1990-09-27 | Jellyfish inflow prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511048Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101039372B1 (en) * | 2010-09-14 | 2011-06-08 | 주식회사 지주 | Apparatus for preventing the inflow of aquatic life |
-
1990
- 1990-09-27 JP JP1990100221U patent/JP2511048Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101039372B1 (en) * | 2010-09-14 | 2011-06-08 | 주식회사 지주 | Apparatus for preventing the inflow of aquatic life |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0457520U (en) | 1992-05-18 |
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