WO2024039247A1 - Transfert de poissons d'un premier conteneur à un second conteneur - Google Patents

Transfert de poissons d'un premier conteneur à un second conteneur Download PDF

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Publication number
WO2024039247A1
WO2024039247A1 PCT/NO2023/000003 NO2023000003W WO2024039247A1 WO 2024039247 A1 WO2024039247 A1 WO 2024039247A1 NO 2023000003 W NO2023000003 W NO 2023000003W WO 2024039247 A1 WO2024039247 A1 WO 2024039247A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
fish
water
pipeline
liquid
Prior art date
Application number
PCT/NO2023/000003
Other languages
English (en)
Inventor
Aga Morten
Original Assignee
Searas 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 Searas As filed Critical Searas As
Publication of WO2024039247A1 publication Critical patent/WO2024039247A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K79/00—Methods 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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/14—Fishing vessels
    • B63B35/24—Fish holds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/30—Conveying materials in bulk through pipes or tubes by liquid pressure
    • 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
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the present invention pertains to a device and method for enhancing the lifting height in the process of pumping fish within a primarily vertical pipe system.
  • the method involves the introduction of gas into a water flow at a lower section of the vertical pipe system, resulting in a lighter liquid column within the pipe.
  • This introduction of gas at the lower end of the primary vertical pipe system decreases liquid density, thereby extending the lifting height for the water. Consequently, this provides an exceptionally gentle means of lifting fish by a few additional meters.
  • the gas or air injection into the pipe system is combined with the pressurization of the tank from which the fish are to be transferred.
  • Fish transfer typically occurs from a lower level to a higher level, and various methods are currently employed for this purpose. These methods include directing the fish into a pipe system for further transportation. Standard fish pumps or tank pressurization systems are utilized to convey fish through pipes to a different location. Often, a combination of these methods is employed.
  • Patent number NO306142 illustrates an alternating fish elevator.
  • Patent number NO325942 depicts a device for extracting fish from a trawl into a vessel.
  • Patent number NO341228 outlines a solution where fish are lifted in a vacuum, sorted, and then released into tanks.
  • This system constitutes a completely closed system in which a vacuum is maintained throughout the entire process, encompassing a fish-receiving tank, a sorting mechanism, and a pump to create pipe system circulation for the transfer of water and fish.
  • a vacuum pump sustains the vacuum within this closed system. While effective, this solution is complex and costly, requiring large tanks and systems to be placed under vacuum conditions.
  • the present invention can be used in conjunction with existing methods and provides a gentle means to enhance the lifting height for these methods.
  • the object of the invention is to provide a system for transferring fish gently from a source tank (e.g., a fish tank or wellboat) to another tank, often situated at a higher level.
  • a source tank e.g., a fish tank or wellboat
  • This system can be employed in conjunction with standard solutions like fish pumps or operate independently.
  • the solution relies on pressurizing the source tank and introducing gas into the lower section of the pipe connecting the two tanks, preferably within a primarily vertical portion of the pipeline. This creates a lighter water column in the pipeline (lower self-weight), thereby increasing the lifting height of both the water and fish.
  • the introduced gas can either be released directly into the air at the outlet, where water and fish are separated, or it can be part of a closed pipe system where a vacuum fan extracts air from the top. In this closed system, water and fish flow down into a tank with a water level significantly higher than the originating tank.
  • the primary objective of the invention is to elevate the lifting height of a fish transport system, ensuring the transportation process remains gentle on the fish.
  • Current fish pumps designed to lift fish into a tank often have limitations regarding the size of fish they can accommodate.
  • the present solution incorporates two fundamental principles for transferring liquid and marine organisms from a closed first tank to a second tank:
  • the present invention encompasses a device for moving marine organisms from a first tank containing liquid at a specific level to a second tank positioned at a higher level.
  • the device involves the use of a pipeline connecting the two tanks for the transfer of marine organisms.
  • the first tank is sealed or closed, and pressurization of this tank is applied to force the liquid and marine organisms into the pipeline.
  • a compressor introduces gas into the lower portion (18a) of the pipeline.
  • sections of the pipeline extend beneath the level of the tank on the wellboat.
  • a siphon is used to draw liquid from the first tank into the second tank via the pipeline, facilitated by a vacuum pump that removes air from the top of the siphon. This process effectively transfers marine organisms and liquid to the second tank.
  • the siphon returns the liquid to the first tank while retaining the marine organisms in the second tank.
  • equipment components such as air pumps, air introduction systems, sensors, etc., may be installed on the wellboat.
  • the invention in a second aspect, pertains to a method for transferring marine organisms within a liquid, such as water, from a first tank to a second tank located at a higher level, wherein the method involves adding gas via a compressor into a vertical segment of a pipeline connecting the first tank to the second tank, wherein this addition of gas lightens the weight of the liquid within the pipeline, enabling the water and marine organisms to be raised to a higher level, and wherein, simultaneously, the first tank is pressurized using a compressor.
  • a liquid such as water
  • a sensor monitors the liquid level in the tank and adjusts the gas injection rate into the pipeline accordingly.
  • Figure 1 schematically illustrates a setup for transferring fish from a tank in a wellboat to a higher tank.
  • FIG. 2 schematically outlines a solution in accordance with the invention, wherein fish from a tank in a wellboat are transferred to a higher tank.
  • the tank on the wellboat is pressurized, and gas is introduced into the pipeline connecting the two tanks to extend the lifting height.
  • Figure 3 schematically demonstrates how the pipeline is extended into the tank on the wellboat, achieve greater vertical height for the added gas to act upon.
  • FIG 1 schematically illustrates how marine organisms 11, such as fish, can be transferred from the tank 10 on a wellboat 12 to a higher-level tank 34.
  • This transfer can be carried out using conventional methods such as pumping and suction of fish through the pipeline 16. This can be quite rough, especially for larger fish, and the present invention seeks to establish a system where fish are transferred more gently.
  • a land-based aquaculture facility can be located 3 meters above sea level. If the water level in the tank is 8 meters, there will be an 11-meter difference between the normal water level and the water level in the aquaculture tank 34.
  • a typical wellboat designed to pump fish upwards may have a fish lifting height of 10 meters.
  • Previous solutions have included a hatch in the aquaculture tank 34, located, for example, 3 meters below the normal tank level, and then lowering the water level in the tank below this hatch so that the wellboat 12 can pump water into the aquaculture tank 34.
  • Figure 1 illustrates a traditional solution where the wellboat 12's pump delivers water and fish to a tank 34 where the water level is lowered by 3 meters (similar concept to patent application N020201424). A lowered tank 34 will have a higher fish density as the emptying of the wellboat 12 approaches its end.
  • the example shows that the water volume in the tank is reduced by 3/8.
  • the density in a tank used for fish farming can typically be 70 kg/m 3 with water. Higher density requires more water circulation and opportunities to remove CO2 and add O2.
  • higher densities can be expected since there is no feeding in the tank, and therefore, the O2 consumption will normally be lower.
  • the present invention solves this challenge by having a compressor 18 supplement compressed air at the bottom 18a of the vertical pipeline 16 from tank 10 on the wellboat 12 to tank 34.
  • compressed air When compressed air is blown into a vertical water column, the self-weight of the water in the water column is reduced. This will cause the water level to rise higher.
  • tank 10 on the wellboat is pressurized further to promote the transport of fish through pipeline 16.
  • Figure 2 shows how air is blown into the vertical pipe 16. Assuming (example 1) that the pipe 16 is approximately 9 meters long, and it flows at 200 liters per second in the pipe 16, blowing in about 20 liters per second of air will cause the liquid column to rise approximately 0.9 meters since there is about 10% air in the water in the vertical section.
  • the pressure at which the air is pumped into the pipe 16 is directly related to the height of the liquid column.
  • fish have approximately the same self-weight as water. When air is pumped into the water, the fish will have a higher self-weight. There will, therefore, be a limitation on the proportion of air to water with the consideration that the fish, with higher self-weight, can be lifted with the water.
  • Another method to increase the lifting height is to increase the distance from the point where the air is pumped into the vertical pipe to the top of the pipe 16, where water and air are discharged into the atmosphere.
  • FIG 2 is a sketch of a system where a tank 10 contains liquid, such as water and marine organisms, such as fish, to be moved up one level.
  • the tank 10 is a wellboat 12.
  • An air compressor 14 pumps compressed air into tank 10 on the wellboat 12, for example, up to a maximum of 1 bar.
  • This pressure will push the water out of the wellboat 12 through a pipeline 16 to a vertical level in the pipeline (indicated as A in Figure 2), which corresponds to the pressure above the liquid level in tank 10.
  • a in Figure 2 the vertical level in the pipeline
  • the details of wellboat design will not be discussed here, but typically, the available pressure and accompanying water level will be sufficient for the water to start flowing through the pipeline 16 to the outlet 16a. In other words, the outlet must be below level A where the pressure can lift the water.
  • the remaining height is the height that remains to lift the water before it starts flowing from tank 10 on the wellboat 12 to outlet 16a.
  • Figure 2 also shows an air compressor (18) that pumps air into the vertical pipeline (16) through the inlet point (18a).
  • This air compressor (18) has the capacity to inject air at a pressure that typically exceeds the pressure at the inlet point (18a) of the pipeline (16) and at a rate that eases the flow of the liquid, causing the water to overflow at the outlet (6).
  • the underlying principle for increasing the lifting height is that the density of the liquid column is reduced by introducing gas or air at the bottom (25) of the pipeline (16).
  • the process that initiates the transfer of fish from the wellboat to the fish tank may involve the wellboat (12) pressurizing the tank (10) with a compressor (14) and pumping up a liquid column in the vertical pipe (16). Subsequently, a pressure sensor (20) can measure the pressure at the inlet (18a). The pressure will correspond to the height of the water column in the vertical pipeline (16). This height will vary due to several factors, including the pressure in the wellboat tank (10), the water level in the wellboat tank (10), tides, water density, and more. Typically, there is a barrier (22), such as a grate, at the inlet (18a) to the pipeline (16) on the wellboat (12) that transports fish to the outlet (16a). This barrier prevents fish from entering but allows water to pass through.
  • a barrier such as a grate
  • the air pump (18) When the pressure is measured by sensor 20, the air pump (18) will inject air into the vertical pipe (16) at a quantity and pressure that generates the desired flow of water from tank 10 in the wellboat (12) to outlet 16a based on the pressure recorded by sensor 20.
  • the water flow will be recorded in a water flow meter (24) as water overflows at outlet 16a and returns to tank 10 in the wellboat (12), where a water pump (26) pumps the water back into tank 10.
  • the return water pump (26) needs to overcome the pressure in tank 10.
  • the water can flow back to tank 10 in the wellboat 12 without the need for the pump (26) to operate.
  • the water level in the return pipe (28) will have a higher pressure head than the counterpressure in tank 10.
  • Changes in the water level in tank 10 can be monitored by sensor 20. This may be due to changes in tides or ballasting of wellboat 12, level regulation in tank 10, etc.
  • the amount of air pumped by pump 18 at inlet 18a will then vary based on the desired water flow.
  • the water from tank 10 in wellboat 12 will flow back to the wellboat 12, while fish will pass over a grate (30) with an opening that prevents fish from passing through.
  • Water pump (32) with the capacity to move water in a way that allows fish to flow from the grate (30) to the new tank (34).
  • Water pump (32) can typically draw water from an intake well, or when transferring fish between different tanks, it can draw water from one of the tanks (10, 34). This may involve a new transport channel or a piping system (36) that moves fish to a new tank (34).
  • the water level (indicated as C in Figure 2) in the tank (34) receiving fish will typically be lower than the outlet in the piping system (36), allowing water to flow freely into tank 34.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention concerne une solution pour le transfert doux d'organismes marins d'un premier conteneur à un second conteneur à un niveau supérieur. Le premier conteneur est mis sous pression, et du gaz est introduit dans le conduit entre les deux conteneurs.
PCT/NO2023/000003 2022-08-15 2023-08-14 Transfert de poissons d'un premier conteneur à un second conteneur WO2024039247A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20220881A NO20220881A1 (no) 2022-08-15 2022-08-15 System for pumping av fisk
NO20220881 2022-08-15

Publications (1)

Publication Number Publication Date
WO2024039247A1 true WO2024039247A1 (fr) 2024-02-22

Family

ID=89942008

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2023/000003 WO2024039247A1 (fr) 2022-08-15 2023-08-14 Transfert de poissons d'un premier conteneur à un second conteneur

Country Status (2)

Country Link
NO (1) NO20220881A1 (fr)
WO (1) WO2024039247A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5476088U (fr) * 1978-07-13 1979-05-30
US4551042A (en) * 1984-05-17 1985-11-05 Marco Seattle, Inc. Transfer system for fish and similar articles
US4558990A (en) * 1980-05-12 1985-12-17 Marco Seattle, Inc. Composite pumping system
NO306142B1 (no) * 1998-04-24 1999-09-27 Mmc As FremgangsmÕte og anordning til transport av marine organismer, og anvendelse av anordningen
JP2000344345A (ja) * 1999-06-03 2000-12-12 Okinawa Kaihatsucho Okinawa Sogo Jimukyoku Hokubu Dam Jimushocho 生魚移送装置
NO310391B1 (no) * 2000-06-16 2001-07-02 Erling Waagsboe Framgangsmåte og anordning for flytting av marine organismer
NO325942B1 (no) * 2007-06-18 2008-08-18 Mmc Tendos As System for lasting og lossing av fisk til og fra et fiskefartoy, samt tilhorende fremgangsmate.
WO2010078627A1 (fr) * 2009-01-07 2010-07-15 John Joseph Garland Système de pompe amélioré
NO20141502A1 (no) * 2014-12-11 2016-06-13 Melbu Systems As Anordning for pumping av væske med innblandede partikler, hovedsakelig fisk i vann
NO341228B1 (en) * 2015-09-29 2017-09-18 Cflow Fish Handling As System and method for grading fish
WO2017213511A1 (fr) * 2016-06-10 2017-12-14 Melbu Systems As Procédé et système de pompage de liquide contenant des particules ; de préférence un poisson dans l'eau

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO337512B1 (no) * 2014-01-21 2016-05-02 Sea Soul As Fremgangsmåte og anlegg for opptak av fisk

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5476088U (fr) * 1978-07-13 1979-05-30
US4558990A (en) * 1980-05-12 1985-12-17 Marco Seattle, Inc. Composite pumping system
US4551042A (en) * 1984-05-17 1985-11-05 Marco Seattle, Inc. Transfer system for fish and similar articles
NO306142B1 (no) * 1998-04-24 1999-09-27 Mmc As FremgangsmÕte og anordning til transport av marine organismer, og anvendelse av anordningen
JP2000344345A (ja) * 1999-06-03 2000-12-12 Okinawa Kaihatsucho Okinawa Sogo Jimukyoku Hokubu Dam Jimushocho 生魚移送装置
NO310391B1 (no) * 2000-06-16 2001-07-02 Erling Waagsboe Framgangsmåte og anordning for flytting av marine organismer
NO325942B1 (no) * 2007-06-18 2008-08-18 Mmc Tendos As System for lasting og lossing av fisk til og fra et fiskefartoy, samt tilhorende fremgangsmate.
WO2010078627A1 (fr) * 2009-01-07 2010-07-15 John Joseph Garland Système de pompe amélioré
NO20141502A1 (no) * 2014-12-11 2016-06-13 Melbu Systems As Anordning for pumping av væske med innblandede partikler, hovedsakelig fisk i vann
NO341228B1 (en) * 2015-09-29 2017-09-18 Cflow Fish Handling As System and method for grading fish
WO2017213511A1 (fr) * 2016-06-10 2017-12-14 Melbu Systems As Procédé et système de pompage de liquide contenant des particules ; de préférence un poisson dans l'eau

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Publication number Publication date
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