NO327350B1 - Method and device for reducing exposure to unwanted organisms in a marine fish farm - Google Patents

Method and device for reducing exposure to unwanted organisms in a marine fish farm Download PDF

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Publication number
NO327350B1
NO327350B1 NO20074752A NO20074752A NO327350B1 NO 327350 B1 NO327350 B1 NO 327350B1 NO 20074752 A NO20074752 A NO 20074752A NO 20074752 A NO20074752 A NO 20074752A NO 327350 B1 NO327350 B1 NO 327350B1
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NO
Norway
Prior art keywords
conductors
bag
mare
meshes
marrow
Prior art date
Application number
NO20074752A
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Norwegian (no)
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NO20074752L (en
Inventor
Harald Bredahl
Original Assignee
Sfd As
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 Sfd As filed Critical Sfd As
Priority to NO20074752A priority Critical patent/NO327350B1/en
Priority to CL2008002754A priority patent/CL2008002754A1/en
Priority to PCT/NO2008/000333 priority patent/WO2009038471A1/en
Publication of NO20074752L publication Critical patent/NO20074752L/en
Publication of NO327350B1 publication Critical patent/NO327350B1/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K79/00Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery
    • A01K79/02Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery by electrocution
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/60Floating cultivation devices, e.g. rafts or floating fish-farms
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K75/00Accessories for fishing nets; Details of fishing nets, e.g. structure
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Catching Or Destruction (AREA)

Abstract

Fremgangsmåte for å hindre at uønskede organismer forstyrrende påvirker marine oppdrettsanlegg av den art som er anbrakt i havet, hvor det anvendes i det minste én mærpose (1), og hvor den minst ene mærpose (1) forsynes med minst to elektriske ledere (4a, 4b, 4c, 4d) hvor i det minste en andel av lederne (4a, 4b, 4c, 4d) forbindes til mærposen (1) på en innbyrdes avstand, idet lederne(4a, 4b, 4c, 4d), når de koples til en strømførende ledning (2) og påføres ulik polaritet, setter opp et elektrisk felt i vannet.A method of preventing undesirable organisms from interfering with marine aquaculture plants of the species placed in the sea, where at least one tag bag (1) is used and where the at least one tag bag (1) is provided with at least two electrical conductors (4a, 4b, 4c, 4d) wherein at least a portion of the conductors (4a, 4b, 4c, 4d) are connected to the tag bag (1) at a mutual distance, the conductors (4a, 4b, 4c, 4d) being coupled to a live conductor (2) and applied to different polarity sets up an electric field in the water.

Description

FREMGANGSMÅTE OG ANORDNING FOR Å REDUSERE PÅVIRKNING FRA UØNSKEDE ORGANISMER I ET MARINT OPPDRETTSANLEGG METHOD AND DEVICE FOR REDUCING IMPACT FROM UNDESIRABLE ORGANISMS IN A MARINE FARMING FACILITY

Denne oppfinnelse vedrører en fremgangsmåte for å redusere påvirkning av uønskede organismer i et marint oppdrettsanlegg. Nærmere bestemt dreier det seg om en fremgangsmåte for å hindre at uønskede organismer forstyrrende påvirker marine oppdrettsanlegg av den art som er anbrakt i sjøen, og hvor det anvendes i det minste én mærpose. Den minst ene maerpose forsynes med minst to elektriske ledere hvor i det minste en andel av lederne forbindes til mærposen med en innbyrdes avstand, idet lederne, når de koples til en strømførende ledning sine ledere, påføres ulik polaritet, slik at de setter opp et elektrisk felt i vannet. Oppfinnelsen omfatter også en anordning for utøvelse av fremgangsmåten. This invention relates to a method for reducing the impact of unwanted organisms in a marine aquaculture facility. More specifically, it concerns a method to prevent unwanted organisms from disturbingly affecting marine breeding facilities of the species that are placed in the sea, and where at least one mare bag is used. The at least one maer bag is supplied with at least two electrical conductors, where at least a proportion of the conductors are connected to the maer bag at a distance from each other, as the conductors, when connected to a current-carrying line, are applied to their conductors of different polarity, so that they set up an electrical fell into the water. The invention also includes a device for carrying out the method.

Et maerbasert oppdrettsanlegg forstyrres av mange planter og organismer. Sjøplanter og skjell fester seg til mærposens masker og medfører at posen må tas opp, vaskes og impregne-res. Dyr og fugler forsyner seg av oppdrettsfisk, ofte med relativt store økonomiske konsekvenser. An ant-based farm is disturbed by many plants and organisms. Sea plants and shells stick to the mesh of the mær bag and means that the bag must be taken up, washed and impregnated. Animals and birds feed on farmed fish, often with relatively large economic consequences.

Det er kjent at elektriske felt i vannet kan hjelpe til å holde planter og organismer bort fra et område. It is known that electric fields in the water can help to keep plants and organisms away from an area.

Norsk patent 313931 beskriver således en dobbel mærpose hvor hver av de to mærposer er gjort elektrisk ledende og tildelt ulik polaritet. Mærposer av den art som er beskrevet i NO 313931 befinner seg under normale forhold relativt nær hverandre, og de kan derfor være utsatt for å komme i kontakt med hverandre, særlig under dårlig vær. Det kan derved oppstå en kortslutning som kan redusere det elektriske felt i vannet. Norwegian patent 313931 thus describes a double marrow sac where each of the two marrow sacs is made electrically conductive and assigned different polarity. Mær bags of the kind described in NO 313931 are under normal conditions relatively close to each other, and they can therefore be exposed to coming into contact with each other, particularly in bad weather. A short circuit can thereby occur which can reduce the electric field in the water.

Oppfinnelsen har til formål å avhjelpe eller redusere i det minste én av ulempene ved kjent teknikk. The purpose of the invention is to remedy or reduce at least one of the disadvantages of known technology.

Formålet oppnås i henhold til oppfinnelsen ved de trekk som er angitt i nedenstående beskrivelse og i de etterfølgende patentkrav. The purpose is achieved according to the invention by the features indicated in the description below and in the subsequent patent claims.

En fremgangsmåte i overensstemmelse med oppfinnelsen for å hindre at uønskede organismer forstyrrende påvirker marine oppdrettsanlegg av den art som er anbrakt i havet, og hvor det anvendes i det minste én mærpose, er kjennetegnet ved at den minst ene mærpose forsynes med minst to elektriske ledere hvor i det minste en andel av lederne forbindes til mærposen på en innbyrdes avstand, idet lederne, når de koples til en strømførende ledning sine ledere, påføres ulik polaritet slik at de setter opp et elektrisk felt i vannet. A method in accordance with the invention to prevent unwanted organisms from disturbingly affecting marine breeding facilities of the species that are placed in the sea, and where at least one mare bag is used, is characterized by the fact that the at least one mare bag is supplied with at least two electrical conductors where at least a proportion of the conductors are connected to the marrow bag at a distance from one another, the conductors, when connected to a current-carrying wire, are applied to different polarities so that they set up an electric field in the water.

Fremgangsmåten kan utøves ved at mærposen er forsynt med minst to elektriske ledere hvor i det minste en andel av lederne er forbundet til mærposen og befinner seg på en innbyrdes avstand, idet lederne, når de er påført en spenning og inntar ulik polaritet, er innrettet til å kunne sette opp et elektrisk felt i vannet. The method can be carried out in that the marrow sac is provided with at least two electrical conductors where at least a proportion of the conductors are connected to the marrow sac and are located at a distance from each other, the conductors, when a voltage is applied and assume different polarity, are aligned to to be able to set up an electric field in the water.

De elektriske ledere som fortrinnsvis er uisolerte ledere, The electrical conductors which are preferably non-insulated conductors,

kan også være delvis isolert. Lederne kan være flettet inn i mærposens maskemateriale og forløpe fra overflaten og ned til under mærposen, eller de kan innta et sik-sak mønster sammen med en nærliggende leder som er påført motsatt polaritet. can also be partially insulated. The conductors may be braided into the mesh material of the medullary sac and run from the surface down to below the medullary sac, or they may adopt a zig-zag pattern together with a nearby conductor applied in the opposite polarity.

Det foreligger mange mulige innfestingsmåter for lederne til mærposen, alt etter hvordan mærposen er fremstilt. For eksempel kan lederne knyttes inn i mærposens masker når lederne skal festes til en ferdigprodusert mærpose. Det kan også være aktuelt å feste lederne til mærposen ved hjelp av for eksempel hylser, rør eller ringer. Lederne kan også festes til mærposens masker ved hjelp av strips. There are many possible fixing methods for the leaders of the marrow sac, depending on how the marrow sac is manufactured. For example, the conductors can be tied into the stitches of the marrow bag when the conductors are to be attached to a ready-made marrow bag. It may also be appropriate to attach the conductors to the marrow bag using, for example, sleeves, tubes or rings. The conductors can also be attached to the meshes of the marrow bag using strips.

For mærposer som er fremstilt av komposittmaterialer kan det være fordelaktig at lederne er limt til mærposens masker, eller at lederne er støpt inn i mærposens masker under produksjonen av mærposen. For marrow bags made from composite materials, it may be advantageous that the conductors are glued to the meshes of the marrow bag, or that the conductors are molded into the meshes of the marrow bag during the production of the marrow bag.

Materialet i mærposen er med fordel elektrisk isolerende, men det kan også utgjøres av et delvis elektrisk ledende materiale. Med delvis ledende materiale menes i denne sammenheng et materiale som leder elektrisitet dårlig, men som heller ikke kan betegnes som en isolator. Det kan i noen tilfeller være hensiktsmessig at mærposematerialet utgjør en leder for én polaritet, mens lederne, som i dette utførelseseksempel er elektrisk isolert fra mærposen, er tilført motsatt polaritet. The material in the marrow bag is advantageously electrically insulating, but it can also be made of a partially electrically conductive material. In this context, partially conductive material means a material that conducts electricity poorly, but which cannot be described as an insulator either. In some cases, it may be appropriate for the marrow sac material to form a conductor for one polarity, while the conductors, which in this embodiment are electrically isolated from the marrow sac, are supplied with the opposite polarity.

Mærposen kan med fordel forsynes med en bunnring som omkranser mærposens nedre parti. I det minste en andel av lederne kan være koplet til bunnringen og kan om ønskelig også bære den. Bunnringen vil, særlig dersom den utgjøres av et stivt materiale, kunne bidra til å opprettholde mærposens fasong også under relativt sterk strøm. The marrow sac can advantageously be provided with a bottom ring that encircles the lower part of the marrow sac. At least a proportion of the conductors can be connected to the bottom ring and, if desired, can also carry it. The bottom ring, especially if it is made of a rigid material, will be able to help maintain the shape of the marrow sac even under relatively strong currents.

Fremgangsmåten og anordningen ifølge oppfinnelsen tilveie-bringer i forhold til kjent teknikk en vesentlig forenkling av de komponenter som må være tilstede for å oppnå den til-siktede virkning. The method and device according to the invention provide, compared to known technology, a significant simplification of the components that must be present to achieve the intended effect.

I det etterfølgende beskrives et eksempel på en foretrukket fremgangsmåte og utførelsesform som er anskueliggjort på med-følgende tegninger, hvor: Fig. 1 viser skjematisk en maerpose som er forsynt med ledere ifølge oppfinnelsen; Fig. 2 viser i større målestokk et utsnitt av mærposen; og Fig. 3 viser også et utsnitt av mærposen i en alternativ ut-førelsesform. In what follows, an example of a preferred method and embodiment is described which is visualized in the accompanying drawings, where: Fig. 1 schematically shows a maer bag which is provided with conductors according to the invention; Fig. 2 shows on a larger scale a section of the marrow sac; and Fig. 3 also shows a section of the marrow sac in an alternative embodiment.

På tegningene betegner henvisningstallet 1 en mærpose som er koplet til en ikke vist strømforsyning ved hjelp av en ledning 2 med to ledere. In the drawings, the reference number 1 denotes a mare bag which is connected to a power supply, not shown, by means of a wire 2 with two conductors.

Et antall ledere 4a, 4b, 4c og 4d, se fig. 2 og 3, er på uli-ke måter forbundet til mærposen 1. A number of conductors 4a, 4b, 4c and 4d, see fig. 2 and 3, are connected to the marrow sac 1 in different ways.

Fra ledningen 2 omkranser en fordelingsledning 6 mærposens 1 øvre parti, idet lederne 4a-4d er vekselvis koplet til forde-lings ledningens 6 positive og negative leder. From the line 2, a distribution line 6 encircles the upper part of the sac 1, the conductors 4a-4d being alternately connected to the positive and negative conductor of the distribution line 6.

Lederen 4a er limt til mærposens 1 masker 8, mens lederen 4b er tredd gjennom ringer 10 som forbinder lederen 4a til maskene 8. The conductor 4a is glued to the stitches 8 of the mare bag 1, while the conductor 4b is threaded through rings 10 which connect the conductor 4a to the stitches 8.

Lederen 4c er støpt fast til maskene 8 under produksjonen av mærposen 1. Lederen 4d er festet til maskene 8 ved hjelp av festebånd 12 som er fremstilt av et metall eller et kunstma-teriale . The conductor 4c is cast firmly to the meshes 8 during the production of the marrow bag 1. The conductor 4d is attached to the meshes 8 by means of fastening tape 12 which is made of a metal or an artificial material.

Claims (11)

1. Fremgangsmåte for å hindre at uønskede organismer forstyrrende påvirker marine oppdrettsanlegg av den art som er anbrakt i havet, hvor det anvendes en mærpose (1), karakterisert ved at mærposen (1) forsynes med minst to elektriske ledere (4a, 4b, 4c, 4d) hvor i det minste en andel av lederne (4a, 4b, 4c, 4d) forbindes til mærposen (1) på en innbyrdes avstand, idet lederne (4a, 4b, 4c, 4d), når de koples til en strømfør-ende ledning (2) sine ledere, påføres ulik polaritet og setter opp et elektrisk felt i vannet.1. Procedure for preventing unwanted organisms from disturbingly affecting marine breeding facilities of the species that are placed in the sea, where a mare bag (1) is used, characterized in that the mare bag (1) is supplied with at least two electrical conductors (4a, 4b, 4c . end line (2)'s conductors, are applied with different polarity and set up an electric field in the water. 2. Anordning for å hindre at uønskede organismer forstyrrende påvirker marine oppdrettsanlegg av den art som er anbrakt i havet, hvor det anvendes en mærpose (1), karakterisert ved at mærposen (1) er forsynt med minst to elektriske ledere (4a, 4b, 4c, 4d) hvor i det minste en andel av lederne (4a, 4b, 4c, 4d) er forbundet til mærposen (1) og befinner seg på en innbyrdes avstand, idet lederne (4a, 4b, 4c, 4d), når de er påført en spenning og inntar ulik polaritet, er innrettet til å kunne sette opp et elektrisk felt i vannet.2. Device to prevent unwanted organisms from disturbingly affecting marine breeding facilities of the species that are placed in the sea, where a mare bag (1) is used, characterized in that the mare bag (1) is provided with at least two electrical conductors (4a, 4b, 4c, 4d) where at least a proportion of the conductors (4a, 4b, 4c, 4d) are connected to the marrow bag (1) and are at a distance from each other, as the conductors (4a, 4b, 4c, 4d), when they is applied a voltage and assumes different polarity, is designed to be able to set up an electric field in the water. 3. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er flettet inn i mærposens (1) masker (8).3. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are braided into the meshes (8) of the mare bag (1). 4. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er knyttet inn i mærposens (1) masker (8).4. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are tied into the meshes (8) of the mashing bag (1). 5. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er tredd gjennom hylser rør, eller ringer (10) i mærposen (1).5. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are threaded through sleeves, pipes, or rings (10) in the core bag (1). 6. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er festet ved hjelp av festebånd (12) til mærposens (1) masker (8) .6. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are attached by means of fastening bands (12) to the meshes (8) of the mare bag (1). 7. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er limt til mærposens (1) masker (8).7. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are glued to the meshes (8) of the mashing bag (1). 8. Anordning i henhold til krav 2, karakterisert ved at lederne (4a, 4b, 4c, 4d) er støpt inn i mærposens (1) masker (8).8. Device according to claim 2, characterized in that the conductors (4a, 4b, 4c, 4d) are molded into the meshes (8) of the mashing bag (1). 9. Anordning i henhold til krav 2, karakterisert ved at materialet i mærposen (1) er delvis elektrisk ledende.9. Device according to claim 2, characterized in that the material in the marbling bag (1) is partially electrically conductive. 10. Anordning i henhold til krav 9, karakterisert ved at materialet i mærposen (1) utgjør en leder for én polaritet, mens lederne (4a, 4b, 4c, 4d) er påført motsatt polaritet.10. Device according to claim 9, characterized in that the material in the marbling bag (1) constitutes a conductor for one polarity, while the conductors (4a, 4b, 4c, 4d) are applied to the opposite polarity. 11. Anordning i henhold til krav 1, karakterisert ved at i det minste en andel av lederne (4a, 4b, 4c, 4d) er koplet til en bunnring.11. Device according to claim 1, characterized in that at least a proportion of the conductors (4a, 4b, 4c, 4d) are connected to a bottom ring.
NO20074752A 2007-09-18 2007-09-18 Method and device for reducing exposure to unwanted organisms in a marine fish farm NO327350B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO20074752A NO327350B1 (en) 2007-09-18 2007-09-18 Method and device for reducing exposure to unwanted organisms in a marine fish farm
CL2008002754A CL2008002754A1 (en) 2007-09-18 2008-09-16 Method to prevent unwanted organisms from having a disturbing influence where: a net pen has two electrical conductors (4a-ad), and an electrical field is established in the water and associated apparatus
PCT/NO2008/000333 WO2009038471A1 (en) 2007-09-18 2008-09-17 A method and device for reducing the influence of unwanted organisms in a marine farming facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20074752A NO327350B1 (en) 2007-09-18 2007-09-18 Method and device for reducing exposure to unwanted organisms in a marine fish farm

Publications (2)

Publication Number Publication Date
NO20074752L NO20074752L (en) 2009-03-19
NO327350B1 true NO327350B1 (en) 2009-06-15

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NO20074752A NO327350B1 (en) 2007-09-18 2007-09-18 Method and device for reducing exposure to unwanted organisms in a marine fish farm

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CL (1) CL2008002754A1 (en)
NO (1) NO327350B1 (en)
WO (1) WO2009038471A1 (en)

Cited By (1)

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NO20121115A1 (en) * 2012-10-01 2014-02-24 Sfd As Electric fence and use of the same in a fish farm

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GB201212382D0 (en) * 2012-07-12 2012-08-22 Ace Aquatec Ltd Predator deterrent
NO346671B1 (en) * 2021-01-27 2022-11-21 Cage Ctrl As System for preventing fouling on cages for aquatic animals in water

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NO313931B1 (en) * 2001-03-08 2002-12-30 Seafarm Dev As Method and arrangement of cages

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NO313931B1 (en) * 2001-03-08 2002-12-30 Seafarm Dev As Method and arrangement of cages

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20121115A1 (en) * 2012-10-01 2014-02-24 Sfd As Electric fence and use of the same in a fish farm

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NO20074752L (en) 2009-03-19
WO2009038471A1 (en) 2009-03-26
CL2008002754A1 (en) 2009-09-04

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Owner name: HARBOR AS, NO