DE19502637C1 - Method of deflecting fish from cool water inlet of power station - Google Patents

Method of deflecting fish from cool water inlet of power station

Info

Publication number
DE19502637C1
DE19502637C1 DE19502637A DE19502637A DE19502637C1 DE 19502637 C1 DE19502637 C1 DE 19502637C1 DE 19502637 A DE19502637 A DE 19502637A DE 19502637 A DE19502637 A DE 19502637A DE 19502637 C1 DE19502637 C1 DE 19502637C1
Authority
DE
Germany
Prior art keywords
fish
inlet
channel
inlet channel
deflecting
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
Application number
DE19502637A
Other languages
German (de)
Inventor
Helmut Dipl Ing Ziehe
Heinz Luesing
Achim Donath
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vattenfall Europe Generation AG and Co KG
Original Assignee
VEAG Vereinigte Energiewerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by VEAG Vereinigte Energiewerke AG filed Critical VEAG Vereinigte Energiewerke AG
Priority to DE19502637A priority Critical patent/DE19502637C1/en
Application granted granted Critical
Publication of DE19502637C1 publication Critical patent/DE19502637C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
    • A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/003—Mechanically induced gas or liquid streams in seas, lakes or water-courses for forming weirs or breakwaters; making or keeping water surfaces free from ice, aerating or circulating water, e.g. screens of air-bubbles against sludge formation or salt water entry, pump-assisted water circulation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/006—Arresting, diverting or chasing away fish in water-courses or water intake ducts, seas or lakes, e.g. fish barrages, deterrent devices ; Devices for cleaning fish barriers
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/60—Ecological corridors or buffer zones

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Birds (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

The method involves a veil (13) of air bubbles being generated in front of the inlet, extending from the channel bottom (2) to the surface of the water. This can be supplied by a compressor (9) via a system of pipes (5) in the bottom and with outlet ports (6), extending for the full cross-section of the channel and also to the water surface.

Description

Die Erfindung betrifft ein Verfahren und eine Anordnung zum Abweisen von Fischen vor einem mit einem Zulaufkanal versehenen Einlaufbauwerk, insbesondere für den Kühlwasserkanal eines Kraftwerkes.The invention relates to a method and an arrangement for Rejection of fish in front of an inlet channel Inlet structure, especially for the cooling water channel one Power plant.

Damit der Fischbesatz eines fließenden Gewässers vor Schäden bewahrt bleibt, ist es üblich, vor Einlaufbauwerken elektrische Fischscheuchanlagen anzuordnen (DE 34 41 345 A1, DE 34 28 363 C1, DE 32 19 867 A1, DE 25 30 986 A1). Dabei ist es erforderlich, der Größe der Fische und der Leitfhigkeit des Wassers angepaßte Stromimpulse (Intensität, Dauer) abzugeben, um Fische zu verscheuchen, aber nicht zu schädigen. Diese Anlagen erfordern erhebliche Aufwendungen für die Ortung der Fische und für die Stromimpulserzeugung einschließlich deren Steuerung.So that the fish stock of a flowing water before Damage is preserved, it is common in front of intake structures to arrange electrical fish scaring systems (DE 34 41 345 A1, DE 34 28 363 C1, DE 32 19 867 A1, DE 25 30 986 A1). It is required, the size of the fish and the conductivity current impulses adapted to the water (intensity, duration) to give away to scare away fish but not to damage. These systems require considerable expenses for locating fish and for generating current impulses including their control.

Vor Rechenanlagen für Einlaufbauwerke ist es zur Fernhaltung von Fischen üblich, Netze oder Gitter anzuordnen (DE 40 15 414 A1, DE 42 43 932 A1). Bei diesen Anordnungen kann jedoch, bedingt durch Schwimmgut, ein Verstopfen eintreten und damit Mengenverluste oder gewaltsames Durchtreten des Schwimmgutes erfolgen. Außerdem treten immer noch kleinere Fische durch diese Anordnungen hindurch.In front of computer systems for intake structures, it is Keep fish away, nets or grids to be arranged (DE 40 15 414 A1, DE 42 43 932 A1). With these arrangements can, however, due to Float, clogging and loss of volume or forced passage of the floating material. In addition, smaller fish still pass through them Orders through.

Ebenso ist es bekannt, an solchen Einlaufbauwerken oder Rechenanlagen Fischtreppen, Bypaßkanäle oder Fischaushalter anzuordnen (DE 40 14 582 A1, DE 32 30 137 A1), die jedoch erhebliche bautechnische Aufwendungen darstellen, ständig gewartet werden müssen und auch nicht ausreichend funktionsfähig sind.It is also known to work on such intake structures Computing systems fish stairs, bypass channels or fish holder to arrange (DE 40 14 582 A1, DE 32 30 137 A1), but the considerable represent construction costs, constantly maintained need to be and not sufficiently functional are.

Es ist zur Verringerung des Schwimmgutanfalls nach Einlaufbauwerken bekannt, einen Rückstrom zu erzeugen, das Schwimmgut aufzuwirbeln und so grobes Schwimmgut zurück­ zufördern und kleines Schwimmgut durchzulassen (DE 41 35 707 A1). Ein Abweisen von Fischen ist jedoch dadurch nicht gewährleistet.It is after to reduce the amount of floating material after Inlet structures are known to generate a reverse flow that Swirl up floating material and return coarse floating material convey and let small floating material through (DE 41 35 707 A1). A rejection of fish is not guaranteed.

Der Erfindung liegt daher die Aufgabe zugrunde, mit einfachen mechanischen Mitteln einen wirksamen Sperrbereich zum Abweisen von Fischen zu schaffen.The invention is therefore based on the object simple mechanical means an effective restricted area to reject fish.

Dies wird beim Verfahren nach Anspruch 1 dadurch erreicht, daß erfindungsgemäß vor dem Einlaufbauwerk ein vom Boden des Zulaufkanals bis zur Wasseroberfläche ausgebildeter Luftblasenschleier erzeugt wird und bei der Anordnung nach Anspruch 2 dadurch, daß vor dem Einlaufbauwerk ein am Boden des Zulaufkanals angeordnetes, sich über den gesamten Querschnitt des Zulaufkanals 2 erstreckendes und bis in den Bereich der Oberfläche des Wasserstandes geführtes Rohrsystem mit Austrittsöffnungen vorgesehen ist, das mit einem Kompressor verbunden ist.This is achieved in the method according to claim 1 in that, according to the invention, an air bubble curtain is formed in front of the inlet structure from the bottom of the inlet channel to the water surface and in the arrangement according to claim 2 in that an arranged on the bottom of the inlet channel in front of the inlet structure over the Entire cross-section of the inlet channel 2 extending and into the region of the surface of the water level pipe system is provided with outlet openings, which is connected to a compressor.

Anhand eines Ausführungsbeispiels wird die Erfindung näher erläutert. Die dazugehörige Zeichnung zeigt schematisch das Einlaufbauwerk für den Kühlwasserkanal des Kraftwerkes.The invention will be explained in more detail using an exemplary embodiment explained. The accompanying drawing shows this schematically Inlet structure for the cooling water channel of the power plant.

Am fließenden Gewässer 1 mit der Fließrichtung 10 ist als Einlaufbauwerk der Zulaufkanal 2 mit der Strömungsrichtung 11 für das Kühlwasser des Kraftwerkes abgezweigt. Im Zulaufkanal 2 ist die Rechenanlage 3 zur Reinigung des Kühlwassers von Schwimmgut angeordnet. Nach der Rechenanlage ist der Kühlwasserkanal 4 zum Kraftwerk vorgesehen. Vor der Rechenanlage 3 ist das Rohrsystem 5 mit den Austrittsöffnungen 6 angeordnet. Das Rohrsystem 5 ist über die Zulaufleitung 7 und den Schieber 8 mit dem Kompressor 9 verbunden.At the flowing water 1 with the flow direction 10 , the inlet channel 2 with the flow direction 11 for the cooling water of the power plant is branched off as an inlet structure. The computer system 3 for cleaning the cooling water from floating material is arranged in the inlet channel 2 . After the computing system, the cooling water channel 4 to the power plant is provided. The pipe system 5 with the outlet openings 6 is arranged in front of the computer system 3 . The pipe system 5 is connected to the compressor 9 via the inlet line 7 and the slide 8 .

Die Anordnung des Rohrsystems 5 erfolgt über den gesamten Querschnitt des Zulaufkanals 2.The pipe system 5 is arranged over the entire cross section of the inlet channel 2 .

Das Rohrsystem 5 ist aus korrosionsfesten Materialien, z. B. aus Plaste, ausbildbar. Die Austrittsöffnungen 6 sind z. B. mit einem Durchmesser von 3 mm zu versehen und z. B. alle 100 mm einzubringen. The pipe system 5 is made of corrosion-resistant materials, e.g. B. made of plastic. The outlet openings 6 are z. B. with a diameter of 3 mm and z. B. every 100 mm.

Die Wirkungsweise ist folgende:The mode of action is as follows:

Über den Kompressor 9, den Schieber 8 und die Zulaufleitung 7 wird Luft 12 in das Rohrsystem 5 eingebracht. Die über die Austrittsöffnungen 6 austretende Luft 12 bildet den Luftblasenschleier 13 aus. Dadurch werden die im Zulaufkanal 2 befindlichen Fische mit Sicherheit abgewiesen und gelangen nicht in die Rechenanlagen 3. Gleichzeitig erfolgt durch die eingetragene Luft 12 eine Sauerstoffanreicherung des Kühlwassers 14 sowie eine Abweisung von Schwimmgut in fester (z. B. Holz, Laub, Plaste) und flüssiger Form (z. B. Öl).Air 12 is introduced into the pipe system 5 via the compressor 9 , the slide 8 and the inlet line 7 . The air 12 exiting through the outlet openings 6 forms the air bubble curtain 13 . As a result, the fish located in the inlet channel 2 are reliably rejected and do not reach the computer systems 3 . At the same time, the air 12 introduced results in an oxygen enrichment of the cooling water 14 and a rejection of floating material in solid (e.g. wood, leaves, plastics) and liquid form (e.g. oil).

Durch die Erfindung wird mit geringen Aufwendungen eine einfache, aber wirkungsvolle Fischabweisung realisiert und aufgrund der Nebeneffekte eine hohe Akzeptanz bei den Wasserbehörden sowie eine verbesserte Kühlwasserzufuhr erreicht. The invention is a with little effort simple but effective fish rejection realized and due to the side effects, a high level of acceptance among the Water authorities and an improved cooling water supply reached.  

BezugszeichenlisteReference list

 1 Gewässer
 2 Zulaufkanal
 3 Rechenanlage
 4 Kühlwasserkanal
 5 Rohrsystem
 6 Austrittsöffnung
 7 Zulaufleitung
 8 Schieber
 9 Kompressor
10 Fließrichtung
11 Strömungsrichtung
12 Luft
13 Luftblasenschleier
14 Kühlwasser 1 body of water
2 inlet channel
3 computer system
4 cooling water channel
5 pipe system
6 outlet opening
7 inlet pipe
8 sliders
9 compressor
10 flow direction
11 flow direction
12 air
13 bubble curtains
14 cooling water

Claims (2)

1. Verfahren zum Abweisen von Fischen vor einem mit einem Zulaufkanal versehenen Einlaufbauwerk, insbesondere für den Kühlwasserkanal eines Kraftwerkes, gekennzeichnet dadurch, daß vor dem Einlaufbauwerk ein vom Boden des Zulaufkanals (2) bis zur Wasseroberfläche ausgebildeter Luftblasenschleier (13) erzeugt wird.1. A method for rejecting fish in front of an inlet structure provided with an inlet channel, in particular for the cooling water channel of a power plant, characterized in that an air bubble curtain ( 13 ) formed from the bottom of the inlet channel ( 2 ) to the water surface is generated in front of the inlet structure. 2. Anordnung zum Abweisen von Fischen vor einem mit einem Zulaufkanal versehenen Einlaufbauwerk, insbesondere für den Kühlwasserkanal eines Kraftwerkes, gekennzeichnet dadurch, daß vor dem Einlaufbauwerk ein am Boden des Zulaufkanals (2) angeordnetes, sich über den gesamten Querschnitt des Zulaufkanals (2) erstreckendes und bis in den Bereich der Oberfläche des Wasserstandes geführtes Rohrsystem (5) mit Austrittsöffnungen (6) vorgesehen ist, das mit einem Kompressor (9) verbunden ist.2. Arrangement for rejecting fish in front of an inlet structure provided with an inlet channel, in particular for the cooling water channel of a power plant, characterized in that in front of the inlet structure is arranged at the bottom of the inlet channel ( 2 ) and extends over the entire cross section of the inlet channel ( 2 ) and up to the region of the surface of the water level, a pipe system ( 5 ) with outlet openings ( 6 ) is provided, which is connected to a compressor ( 9 ).
DE19502637A 1995-01-20 1995-01-20 Method of deflecting fish from cool water inlet of power station Expired - Fee Related DE19502637C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19502637A DE19502637C1 (en) 1995-01-20 1995-01-20 Method of deflecting fish from cool water inlet of power station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19502637A DE19502637C1 (en) 1995-01-20 1995-01-20 Method of deflecting fish from cool water inlet of power station

Publications (1)

Publication Number Publication Date
DE19502637C1 true DE19502637C1 (en) 1996-07-18

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ID=7752512

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19502637A Expired - Fee Related DE19502637C1 (en) 1995-01-20 1995-01-20 Method of deflecting fish from cool water inlet of power station

Country Status (1)

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DE (1) DE19502637C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636246C1 (en) * 1996-08-28 1997-12-11 Ver Energiewerke Ag Device for diverting fish from power plant cooling water inlet channel
DE102008012719A1 (en) 2008-03-05 2009-09-10 Universität Kassel Fish barrier for rejecting fishes at water channels of water flows into direction of flow, has deflector elements and retaining element that runs over channel, where each deflector element is arranged on retaining element

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530986A1 (en) * 1975-07-11 1977-01-20 Hans Grossheim Fish guard and control circuit - uses electrode supply circuit which contains series of variable capacitors connected between each electrode pair
DE3219867A1 (en) * 1982-05-27 1983-12-01 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Electrical fish-scaring installation
DE3230137A1 (en) * 1982-08-13 1984-02-16 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Separation plant for the separation of pollutants entrained in water
DE3441345A1 (en) * 1984-11-13 1986-05-15 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Electrical fish-scaring system
DE4015414A1 (en) * 1990-05-14 1991-11-21 Vollmar Oskar Gmbh Combined sewage and rain-water drainage system - has device which prevents outflow of floating matter
DE4014582A1 (en) * 1990-05-07 1991-12-12 Agl Inst Fuer Angewandte Gewae Weir allowing fish passage - through selectively opened submerged opening of acrylic] glass material
DE4135707A1 (en) * 1991-10-30 1993-05-06 Ruediger 7120 Bietigheim-Bissingen De Nann Method to reduce solid deposits in hydroelectric power station - uses swirl plate, to generate backflow on rake, to churn-up deposits, and flush through small solids
DE4243932A1 (en) * 1992-12-23 1994-07-07 T Z Entwicklungs & Handelsgese Protective grating for open channels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530986A1 (en) * 1975-07-11 1977-01-20 Hans Grossheim Fish guard and control circuit - uses electrode supply circuit which contains series of variable capacitors connected between each electrode pair
DE3219867A1 (en) * 1982-05-27 1983-12-01 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Electrical fish-scaring installation
DE3230137A1 (en) * 1982-08-13 1984-02-16 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Separation plant for the separation of pollutants entrained in water
DE3441345A1 (en) * 1984-11-13 1986-05-15 Maschinenfabrik Hellmut Geiger Gmbh & Co Kg, 7500 Karlsruhe Electrical fish-scaring system
DE4014582A1 (en) * 1990-05-07 1991-12-12 Agl Inst Fuer Angewandte Gewae Weir allowing fish passage - through selectively opened submerged opening of acrylic] glass material
DE4015414A1 (en) * 1990-05-14 1991-11-21 Vollmar Oskar Gmbh Combined sewage and rain-water drainage system - has device which prevents outflow of floating matter
DE4135707A1 (en) * 1991-10-30 1993-05-06 Ruediger 7120 Bietigheim-Bissingen De Nann Method to reduce solid deposits in hydroelectric power station - uses swirl plate, to generate backflow on rake, to churn-up deposits, and flush through small solids
DE4243932A1 (en) * 1992-12-23 1994-07-07 T Z Entwicklungs & Handelsgese Protective grating for open channels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636246C1 (en) * 1996-08-28 1997-12-11 Ver Energiewerke Ag Device for diverting fish from power plant cooling water inlet channel
DE102008012719A1 (en) 2008-03-05 2009-09-10 Universität Kassel Fish barrier for rejecting fishes at water channels of water flows into direction of flow, has deflector elements and retaining element that runs over channel, where each deflector element is arranged on retaining element

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: VATTENFALL EUROPE GENERATION AG & CO. KG, 10115 BE

8327 Change in the person/name/address of the patent owner

Owner name: VATTENFALL EUROPE GENERATION AG & CO. KG, 03050 CO

8339 Ceased/non-payment of the annual fee