JPH07224418A - Shell removing device for water intake and discharge paths of power plant - Google Patents
Shell removing device for water intake and discharge paths of power plantInfo
- Publication number
- JPH07224418A JPH07224418A JP6040425A JP4042594A JPH07224418A JP H07224418 A JPH07224418 A JP H07224418A JP 6040425 A JP6040425 A JP 6040425A JP 4042594 A JP4042594 A JP 4042594A JP H07224418 A JPH07224418 A JP H07224418A
- Authority
- JP
- Japan
- Prior art keywords
- weir
- downstream
- water
- upstream
- side wall
- 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
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
- Cleaning In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、火力発電所等の取・放
水路の除貝装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shellfish removing device for intake and discharge channels of thermal power plants and the like.
【０００２】[0002]
【従来の技術】例えば、臨海火力発電所の取・放水路に
おいては、海生物なかでも貝（ムラサキガイ）の繁殖，
脱落，流下，堆積等の現象が発生する。2. Description of the Related Art For example, in the water intake and discharge channels of a seaside thermal power plant, the reproduction of shellfish (mussel) among sea life,
Phenomena such as dropout, runoff, and accumulation occur.
【０００３】[0003]
【発明が解決しようとする課題】その結果、復水ポンプ
の故障，水路断面積の減少，貝の公海への放出，その堆
積等による被害は多大である。As a result, the damage of the condensate pump, the reduction of the cross-sectional area of the water channel, the release of shellfish into the open sea, the accumulation thereof, and the like are great.
【０００４】本発明はこのような事情に鑑みて提案され
たもので、流下する大量の貝類の回収を容易にするため
に、これを水路側壁近傍に集積させ、さらに集積した貝
を陸上に揚げるようにした発電所の取・放水路の除貝装
置を提供することを目的とする。The present invention has been proposed in view of the above circumstances, and in order to facilitate the collection of a large amount of shellfish flowing down, the shellfish are accumulated near the side wall of the waterway, and the accumulated shellfish are fried on land. An object of the present invention is to provide a shellfish removing device for the intake and discharge channels of a power plant.
【０００５】[0005]
【課題を解決するための手段】そのために本発明は、取
・放水路の床面に突設され上記水路の一方の側壁から鋭
角で斜め上流へ延び、その先端が他方の側壁との間に比
較的狹いすきまを有する上流沈み堰と、上記上流沈み堰
の若干下流で上記水路の床面に突設され上記他方の側壁
から上記上流沈み堰とほぼ平行的に延び、その先端が上
記一方の側壁との間に比較的広いすきまを有する下流沈
み堰と、上記下流堰の先端の広いすきまの若干下流の床
面上に開口する吸引口から上記水路の水を吸引し、これ
をスクリーンを内蔵する回収タンクで含有貝類を分離し
たのち、上記水路の下流へ排水する貝類分離水流路とを
具えたことを特徴とする。To this end, the present invention is provided so as to project from the floor surface of a water intake / drainage channel and extend obliquely upstream from one side wall of the water channel at an acute angle, with its tip between the other side wall. An upstream subsidence weir having a relatively narrow clearance, and a portion slightly downstream of the upstream subsidence weir protruding from the floor surface of the water channel, extending from the other side wall substantially parallel to the upstream subsidence weir, and the tip of the one side The downstream weir having a relatively wide gap with the side wall and the suction port opening on the floor surface slightly downstream of the wide gap at the tip of the downstream weir sucks the water in the water channel, and It is characterized by comprising a shellfish separating water flow path for discharging the contained shellfish in a recovery tank built therein and then draining the separated shellfish to the downstream side of the water channel.
【０００６】[0006]
【作用】このような構成によれば、下記の作用が行われ
る。すなわち、図３に示すように、水路床面を滑動，転
動しながら流下しつつ沈み堰に近づいてきた貝類は、上
流沈み堰（以下上流堰という）の先端と右側壁２Ｒとの
すきまである入口Ａ部に集まる。集まった貝類は互いに
平行する両堰の間に発生する渦流により両堰に沿って下
流へ運ばれ、運ばれた貝類は、その後、下流沈み堰（以
下下流堰という）の先端と左側壁２Ｌとの間から流出
し、左側壁寄りのＢ部に集まり堆積する。このようにし
てＢ部に集積した貝類は、ジェットポンプの吸引作用
で、吸引口から吸引されたのち回収タンクへ導入され、
ここでスクリーンにより分離される。分離された貝類は
スクリーンとともに、クレーンで陸揚げされて処分さ
れ、スクリーンを流過した貝類を含まない水のみが排水
管を経て水路の下流へ導入される。According to this structure, the following actions are performed. That is, as shown in FIG. 3, shellfish that have slid and rolled on the floor of the waterway and are approaching the sink weir while flowing down until the end of the upstream sink weir (hereinafter referred to as the upstream weir) and the right side wall 2R. Gather at an entrance A. Collected shellfish are carried downstream along both weirs by a vortex generated between the two weirs parallel to each other, and the carried shellfish are then connected to the tip of the downstream sinking weir (hereinafter referred to as downstream weir) and the left side wall 2L It flows out from between and gathers and accumulates in B part near the left side wall. The shellfish accumulated in the section B in this way is sucked from the suction port by the suction action of the jet pump and then introduced into the recovery tank,
Here it is separated by a screen. The separated shellfish are landed together with the screen by a crane and disposed of, and only the water that does not contain the shellfish that has flowed through the screen is introduced downstream of the waterway through the drainage pipe.
【０００７】[0007]
【実施例】本発明の一実施例を図面について説明する
と、図１はその平面図、図２はその縦断面図、図３は図
１における水流を示す平面図、図４は図３の主要寸法
図、図５は図４のＶ−Ｖ矢視断面の主要寸法図である。1 is a plan view thereof, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a plan view showing water flow in FIG. 1, and FIG. 4 is a main view of FIG. FIG. 5 is a dimensional drawing, and FIG. 5 is a main dimensional drawing of the VV arrow cross section of FIG.
【０００８】まず、図１〜図３において、１は水路、２
Ｌ，２Ｒは水路１の左側壁，右側壁、３は水路の矢印に
示す水流、４は水路１の床面に突設され左側壁２Ｌから
鋭角θで先端が斜め上流に向かって延びる上流堰であ
り、その先端と右側壁２Ｒとの間にすきまＤU がある。
５は上流堰４の若干後方でこれに平行的に水路底面に突
設され、右側壁２Ｒから先端が水路の下流に向かって斜
めに延びる下流堰であり、その先端と左側壁２Ｌとの間
には大きなすきまＤL が設けられている。６は左側壁２
Ｌであって上流堰４の基端の若干後方の位置に設けられ
た吸引口、８は吸引口６から導入した海水を駆動水７で
吸引して吐出するジェットポンプ、９はジェットポンプ
８の吐出口に接続された回収タンクで、回収タンク９の
内部はスクリーン１０により前後２室又は上下２室に仕
切られている。１１は回収タンク９からの排水を水路１
の下流に導く排水パイプである。First, in FIGS. 1 to 3, 1 is a water channel, 2
L and 2R are left side walls and right side walls of the water channel 1, 3 is a water flow indicated by the arrow of the water channel, and 4 is an upstream weir projecting from the floor surface of the water channel 1 and extending from the left side wall 2L at an acute angle θ and extending obliquely upstream. And there is a clearance D U between the tip and the right side wall 2R.
Reference numeral 5 denotes a downstream weir that is slightly rearward of the upstream weir 4 and protrudes parallel to the upstream bottom of the water channel, and has a tip extending obliquely from the right side wall 2R toward the downstream of the water channel, and between the tip and the left side wall 2L. Has a large clearance D L. 6 is the left side wall 2
L is a suction port provided at a position slightly rearward of the base end of the upstream weir 4, 8 is a jet pump that sucks and discharges seawater introduced from the suction port 6 with the driving water 7, and 9 is a jet pump 8. The recovery tank is connected to the discharge port, and the inside of the recovery tank 9 is partitioned by a screen 10 into two chambers, front and rear, or two chambers, upper and lower. 11 is the water channel 1 for drainage from the recovery tank 9.
It is a drainage pipe that leads to the downstream.
【０００９】このような構造において、その主要寸法は
図４〜図５に示すように定義する。すなわち、 Ｕ：水路の流速 Ｗ：水路の幅 Ｈ：水路の水深 ｈ：堰の高さ ＬU ：上流堰の長さ ＬL ：下流堰の長さ ＤU ：上流堰と水路側壁とのすきま ＤL ：下流堰と水路側壁とのすきま ｄ：上流堰と下流堰との間の流路巾 θU ：上流堰と右側壁とのなす角度 θL ：下流堰と左側壁とのなす角度 ｗ： 堰の厚みIn such a structure, its main dimensions are defined as shown in FIGS. That, U: flow rate of the channel W: width of the channel H: waterway depth h: height of the weir L U: length of the upstream weir L L: length of the downstream weir D U: the gap between the upstream weir and channel sidewall D L : Clearance between downstream weir and water channel side wall d: Flow width between upstream weir and downstream weir θ U : Angle between upstream weir and right side wall θ L : Angle between downstream weir and left side wall w : Weir thickness
【００１０】このような装置において、実験を行ったと
ころ、図４〜図５に示す下記の寸法範囲で貝の集積が良
好であることが判明した。これは、両沈み堰４，５が形
成する平行堰間の流路の流速が比較的速いので貝類は押
し流され、平行堰の下流端で流速が減少するので、ここ
に貝類が集積することによる。 １／１０Ｈ＜ｈ＜１／２Ｈ ８／１０Ｗ＜ＬU ＜Ｗ ５／１０Ｗ＜ＬL ＜Ｗ ｈ＜ＤU ＜２ｈ １／１０Ｗ＜ＤU ＜３／１０ ３／１０Ｗ＜ＤL ＜７／１０ ｈ＜ｄ＜３ｈ ４５°＜θU ＜１００° ４５°＜θL ＜１００° １／１０ｈ＜ｗ＜ｈExperiments were carried out on such a device, and it was found that the shellfish accumulation was good in the following size ranges shown in FIGS. This is because the flow velocity of the flow path between the parallel weirs formed by both sinking weirs 4 and 5 is relatively fast, so that the shellfish are swept away and the flow velocity decreases at the downstream end of the parallel weir, so that the shellfish accumulate there. . 1 / 10H <h <1 / 2H 8 / 10W <L U <W 5 / 10W <L L <W h <D U <2h 1 / 10W <D U <3/10 3 / 10W <D L <7 / 10 h <d <3 h 45 ° <θ U <100 ° 45 ° <θ L <100 ° 1/10 h <w <h
【００１１】したがって、このような範囲の貝類の集積
部に吸引口６（図１）を設け、集まった貝類をジェット
ポンプ８で吸引し、回収タンク９に吐出する。そうする
と、貝類はスクリーン１０上に残り、水は排水管１１か
ら水路１へ戻る。Therefore, a suction port 6 (FIG. 1) is provided in the shellfish accumulating portion in such a range, and the collected shellfish is sucked by the jet pump 8 and discharged to the recovery tank 9. Then, the shellfish remain on the screen 10 and the water returns from the drain pipe 11 to the water channel 1.
【００１２】[0012]
【発明の効果】このような装置によれば、沈み堰の効果
により、水路内を流下した貝類は、一ヶ所に集積する。
集積した貝類はエジェクターポンプにより吸引され陸揚
げされる。したがって、流下する貝類による被害がなく
なる。なお、上記実施例において、吸引口は側壁又は側
壁付近の床面を貫通して設けてもよく、またジェットポ
ンプの代わりにフィッシュポンプを採用することも可能
である。これはジェットポンプ，フィッシュポンプ等に
よれば、水流とともに貝類を破損することなく無傷で吸
引し、これを回収タンクへ導入することができることに
よる。EFFECTS OF THE INVENTION According to such an apparatus, shellfish that have flowed down the water channel are accumulated in one place due to the effect of the sink weir.
The accumulated shellfish are sucked by an ejector pump and landed. Therefore, the damage caused by the falling shellfish is eliminated. In the above embodiment, the suction port may be provided so as to penetrate the side wall or the floor surface near the side wall, and a fish pump may be used instead of the jet pump. This is because a jet pump, a fish pump, etc. can suck the shellfish without damaging it together with the water flow and introduce it into the recovery tank.
【００１３】要するに本発明によれば、取・放水路の床
面に突設され上記水路の一方の側壁から鋭角で斜め上流
へ延び、その先端が他方の側壁との間に比較的狹いすき
まを有する上流沈み堰と、上記上流沈み堰の若干下流で
上記水路の床面に突設され上記他方の側壁から上記上流
沈み堰とほぼ平行的に延び、その先端が上記一方の側壁
との間に比較的広いすきまを有する下流沈み堰と、上記
下流堰の先端の広いすきまの若干下流の床面上に開口す
る吸引口から上記水路の水を吸引し、これをスクリーン
を内蔵する回収タンクで含有貝類を分離したのち、上記
水路の下流へ排水する貝類分離水流路とを具えたことに
より、流下する大量の貝類を水路側壁近傍に集積させ、
さらに、集積した貝を陸揚げする発電所の取・放水路の
除貝装置を得るから、本発明は産業上極めて有益なもの
である。In short, according to the present invention, the projection is provided on the floor surface of the intake / exhaust canal and extends obliquely upstream from one side wall of the above-mentioned water canal at a sharp angle, and its tip is relatively narrowly spaced from the other side wall. Between the upstream subsidence weir and the upstream sideward weir, which extends slightly in the downstream of the upstream subsidence weir and projects substantially parallel to the upstream sideward weir from the other side wall. A downstream sunk weir with a relatively wide clearance, and a suction port that opens slightly above the floor slightly downstream of the wide clearance at the tip of the downstream weir to suck the water in the water channel, and use a recovery tank with a built-in screen. After separating the contained shellfish, by providing a shellfish separation water flow channel that drains to the downstream of the above water channel, a large amount of shellfish that flows down is accumulated near the water channel sidewall,
Further, the present invention is extremely useful industrially because it provides a shellfish removing device for the intake and discharge channels of a power plant for landing accumulated shellfish.
【図１】本発明の一実施例を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
【図２】図１の縦断面図である。FIG. 2 is a vertical sectional view of FIG.
【図３】図１における水流を示す平面図である。3 is a plan view showing the water flow in FIG. 1. FIG.
【図４】図３の堰の寸法説明図である。4 is a dimensional explanatory view of the weir of FIG. 3. FIG.
【図５】図４のＶ−Ｖ矢視断面の寸法図である。5 is a dimensional diagram of a cross section taken along the line VV of FIG.
１ 水路 ２Ｌ 左側壁 ２Ｒ 右側壁 ３ 水流 ４ 上流堰 ５ 下流堰 ６ 吸引口 ７ 駆動水 ８ ジェットポンプ ９ 回収タンク １０ スクリーン １１ 排水パイプ 1 Water Channel 2L Left Side Wall 2R Right Side Wall 3 Water Flow 4 Upstream Weir 5 Downstream Weir 6 Suction Port 7 Driving Water 8 Jet Pump 9 Recovery Tank 10 Screen 11 Drain Pipe
Claims (1)
一方の側壁から鋭角で斜め上流へ延び、その先端が他方
の側壁との間に比較的狹いすきまを有する上流沈み堰
と、上記上流沈み堰の若干下流で上記水路の床面に突設
され上記他方の側壁から上記上流沈み堰とほぼ平行的に
延び、その先端が上記一方の側壁との間に比較的広いす
きまを有する下流沈み堰と、上記下流堰の先端の広いす
きまの若干下流の床面上に開口する吸引口から上記水路
の水を吸引し、これをスクリーンを内蔵する回収タンク
で含有貝類を分離したのち、上記水路の下流へ排水する
貝類分離水流路とを具えたことを特徴とする発電所の取
・放水路の除貝装置。1. An upstream sinker projecting from a floor surface of a water intake / drainage channel, extending obliquely upstream from one side wall of the water channel at an acute angle, and having a relatively narrow gap between the tip of the channel and the other side wall. A little downstream of the upstream sink weir, protruding from the floor of the water channel and extending from the other side wall substantially in parallel with the upstream sink weir, the tip of which has a relatively wide clearance between the one side wall. The water in the water channel is sucked from the downstream sinking weir and the suction port that opens on the floor surface slightly downstream of the wide gap at the tip of the downstream weir, and the contained shellfish is separated by the recovery tank with a screen. After that, a shellfish separating water passage for draining to the downstream of the above-mentioned water passage is provided, and a shell-and-water removing device for a water intake and discharge passage of a power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04042594A JP3316296B2 (en) | 1994-02-15 | 1994-02-15 | Shell removal equipment for intake and discharge channels of power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04042594A JP3316296B2 (en) | 1994-02-15 | 1994-02-15 | Shell removal equipment for intake and discharge channels of power plants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07224418A true JPH07224418A (en) | 1995-08-22 |
| JP3316296B2 JP3316296B2 (en) | 2002-08-19 |
Family
ID=12580305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04042594A Expired - Fee Related JP3316296B2 (en) | 1994-02-15 | 1994-02-15 | Shell removal equipment for intake and discharge channels of power plants |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3316296B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019015286A (en) * | 2017-07-03 | 2019-01-31 | 裕司 阪本 | Jet twister pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101519779B1 (en) * | 2014-02-20 | 2015-05-12 | 주식회사 포스코건설 | Power plant open channel drainage of dispersion and agitation type for hot waste water effect reduction |
-
1994
- 1994-02-15 JP JP04042594A patent/JP3316296B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019015286A (en) * | 2017-07-03 | 2019-01-31 | 裕司 阪本 | Jet twister pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3316296B2 (en) | 2002-08-19 |
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Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020515 |
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