JP2006191801A - Aeration system in fish-breeding tank - Google Patents

Aeration system in fish-breeding tank Download PDF

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JP2006191801A
JP2006191801A JP2005003358A JP2005003358A JP2006191801A JP 2006191801 A JP2006191801 A JP 2006191801A JP 2005003358 A JP2005003358 A JP 2005003358A JP 2005003358 A JP2005003358 A JP 2005003358A JP 2006191801 A JP2006191801 A JP 2006191801A
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power
water
blower
control unit
aeration
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Atsushi Yamaguchi
山口　　篤
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Tsurumi Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for carrying out stable aeration in a fish-breeding tank so that running cost is reduced by utilizing flowing water from a water source as a power source for a blower for the aeration and fishes are not killed even in emergency such as a water shortage state of the water source. <P>SOLUTION: In the aeration system in the fish-breeding tank, water is fed to the fish-breeding tank 4 by rotation of a water wheel 5 and a generator 6 is driven to feed generated power from the generator 6 to an electric motor 11a for the blower 11b to drive the blower 11b. Thereby, the aeration is carried out in the fish-breeding tank 4. The excessive generated power is accumulated in an accumulator 12. When a water stream from the water source 1 is interrupted, the power is fed from the accumulator 12 to the electric motor 11a for the blower 11b. Thereby, the blower 11b is driven to thereby continue the aeration in the fish-breeding tank 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、養魚槽内におけるエアレーションシステムに関するものである。   The present invention relates to an aeration system in a fish tank.

養魚槽内へのエアレーション装置としてブロワーが一般的に使用される。また、養魚槽の水質を一定に保つため、近隣の河川等から取水管を通じて常時新鮮な水が流れ込むようになっている。公知例としては、外部電力を供給して交流発電機を回転させ該電動機に直結されたブロワーを駆動して養魚槽内にエアレーションを行わせる（例えば、特許文献１参照。）。しかしこの方法では、停電時など交流電動機への給電が停止した場合、即座にブロワーも停止して養魚槽内への酸素供給が断たれ、養殖魚を死滅させることになる。また、交流電動機を常時駆動されるための電力を必要とし、ランニングコストが嵩むことになる。   A blower is generally used as an aeration device into a fish tank. Moreover, in order to keep the water quality of the fish tank constant, fresh water always flows from neighboring rivers through intake pipes. As a known example, external power is supplied to rotate an alternator to drive a blower directly connected to the motor to cause aeration in the fish tank (for example, see Patent Document 1). However, according to this method, when power supply to the AC motor is stopped, such as during a power failure, the blower is immediately stopped, the oxygen supply to the fish tank is cut off, and the cultured fish is killed. Moreover, the electric power for always driving an alternating current motor is required, and a running cost will increase.

他の公知例として、越流水による自然エネルギーを利用して水車を回し、該水車に連結されたブロワーを駆動させてエアレーションを行わせる（例えば、特許文献２参照。）。しかしこの方法では、渇水時や水位低下時には水車が回らないので、ブロワーも駆動せず酸素供給が停止して、生物を死滅させる結果となる。   As another known example, a turbine is turned using natural energy generated by overflow water, and a blower connected to the turbine is driven to perform aeration (for example, see Patent Document 2). However, in this method, since the water wheel does not rotate during drought or when the water level drops, the blower is not driven and the oxygen supply is stopped, resulting in the death of the living organism.

特開平６−２０９６７５号公報（第１図）JP-A-6-209675 (FIG. 1) 特開平６−１８２３７２号公報（要約）JP-A-6-182372 (summary)

解決しようとする課題は、エアレーション用ブロワーの動力源に水源からの流下水を利用してランニングコストを低減し、且つ、水源が渇水状態になるなどの緊急時においても魚を死滅させることのないよう、養魚槽内へ安定したエアレーションが実施されるシステムを提供することである。   The problem to be solved is to use running water from the water source as the power source of the aeration blower to reduce the running cost and not to kill the fish even in an emergency such as a drought of the water source Thus, it is to provide a system in which stable aeration is performed in a fish tank.

本発明では、水源に設けられた取水口よりフローセンサを介して導下される水流により水車を回転させ、該水車の回転により養魚槽に水を供給すると共に発電機を駆動させ、該発電機からの発生電力を制御器中の電力制御部を介しブロワーの電動機に供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせ、前記発生電力の余剰分は前記電力制御部を介して蓄電装置に蓄電させ、取水口からの水流が途切れたときは前記フローセンサからの発信信号を制御器中の信号制御部を経て電力制御部に送信させ、蓄電装置からブロワーの電動機に給電しブロワーを駆動させて養魚槽内へのエアレーションを継続させ、蓄電装置に蓄えられた電力を使い果したときは外部電源から制御器中の電力制御部を介しブロワーの電動機に電力を供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせることを最も主要な特徴とする。   In the present invention, a water turbine is rotated by a water flow guided through a flow sensor from a water intake provided in a water source, and water is supplied to the fish tank by the rotation of the water turbine and a generator is driven. The generated power from is supplied to the blower motor through the power control unit in the controller and the blower is driven to cause aeration in the fish tank, and the surplus of the generated power is transmitted through the power control unit. When the water flow from the water intake is interrupted by causing the power storage device to store power, the transmission signal from the flow sensor is transmitted to the power control unit via the signal control unit in the controller, and the power is supplied from the power storage device to the blower motor. When the aeration is continued into the fish tank and the power stored in the power storage device is used up, power is supplied from the external power source to the blower motor via the power control unit in the controller. Feeding to the most important feature that causes aeration in fish tank by driving the blower.

本発明によれば、水源の渇水や水位低下等で取水口からの水流が途切れた場合でも、フローセンサからの発信信号に基づき、蓄電装置に蓄電されている電力を使用してブロワーは引続き運転されることになり、酸欠による養殖魚の死滅を防ぐことができる。また、仮に蓄電装置に蓄えられた電力を使い果したとしても、一時的に外部電源からの電力供給でブロワーを引続き運転させて酸欠による養殖魚の死滅を防止でき、その間に例えば自家発電装置に繋ぐなどの処置を施すことも可能となる。そして外部電源の使用は応急的なものであり、基本的にはブロワーの駆動源は自然力によるクリーンエネルギーであるため、ＣＯ２などを排出することなく無公害であり、電気使用料も少なくて済みランニングコストの低減に寄与することになり、更に、余剰電力は場内の他の電気負荷器に利用したり、電力会社へ売電することも可能となる。   According to the present invention, even when the water flow from the water intake is interrupted due to drought of the water source or a drop in the water level, the blower continues to operate using the power stored in the power storage device based on the transmission signal from the flow sensor. As a result, killing of cultured fish due to lack of oxygen can be prevented. Moreover, even if the power stored in the power storage device is exhausted, the blower can be continuously operated by temporarily supplying power from an external power source to prevent the death of cultured fish due to lack of oxygen. It is also possible to perform treatment such as connecting. The use of an external power supply is urgent. Basically, the drive source of the blower is clean energy by natural force, so it is non-polluting without emitting CO2, etc., and requires less electricity usage. This contributes to cost reduction, and the surplus power can be used for other electric loads in the field or sold to an electric power company.

水源に設けられた取水口よりフローセンサを介して導下される水流により水車を回転させ、該水車の回転により養魚槽に水を供給すると共に発電機を駆動させ、該発電機からの発生電力を制御器中の電力制御部を介しブロワーの電動機に供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせ、前記発生電力の余剰分は前記電力制御部を介して蓄電装置に蓄電させ、取水口からの水流が途切れたときは前記フローセンサからの発信信号を制御器中の信号制御部を経て電力制御部に送信させ、蓄電装置からブロワーの電動機に給電しブロワーを駆動させて養魚槽内へのエアレーションを継続させ、蓄電装置に蓄えられた電力を使い果したときは外部電源から制御器中の電力制御部を介しブロワーの電動機に電力を供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせる。また、養魚槽内に浸漬され溶存酸素検出器からの検出信号を制御中の信号制御部で処理して電力制御部へ指令し、該指令に基づきブロワーの電動機の運転制御により、養魚槽内の溶存酸素量を適正値に保持させる。   The turbine is rotated by the water flow guided through the flow sensor from the water intake provided in the water source, and the generator is driven by supplying water to the fish tank by the rotation of the turbine, and the generated power from the generator Is supplied to the motor of the blower via the power control unit in the controller and the blower is driven to aerate the fish tank, and the surplus generated power is stored in the power storage device via the power control unit. When the water flow from the water intake is interrupted, the transmission signal from the flow sensor is transmitted to the power control unit via the signal control unit in the controller, and the blower is driven by supplying power from the power storage device to the blower motor. When aeration into the fish tank is continued and the power stored in the power storage device is used up, power is supplied from the external power source to the blower motor via the power control unit in the controller. To perform aeration fish tank by driving the over. Further, the detection signal from the dissolved oxygen detector immersed in the fish tank is processed by the controlling signal control unit and commanded to the power control unit, and the operation of the blower motor is controlled based on the command to control the detection signal in the fish tank. Keep the dissolved oxygen amount at an appropriate value.

図１において、１は水源、２は水源１に設けられた取水口、３は取水口２から導下されて養魚槽４内へ開口される取水管、５は取水管３の途中に介装された水車、６は水車５の回転軸端に連結された発電機であり、該発電機６は電力ケーブル７ａによって別途設置の制御器８に内蔵された電力制御部９に接続され、該電力制御部９は電力ケーブル７ｂによって外部電源１０（商用電源，自家発電装置等）へ接続される。１１ａはブロワー１１ｂを駆動させる電動機であり、該電動機１１ａは電力ケーブル７ｃによって電力制御部９に接続され、ブロワー１１ｂから導出された送気管１１ｃの先端には散気装置１１ｄが付設されて養魚槽４内に導下されている。１２は電力ケーブル７ｄによって電力制御部９と接続された蓄電装置、１３は電力ケーブル７ｅによって蓄電装置１２と接続された非常灯、１４は電力ケーブル７ｆによって電力制御部９と接続さらた電気負荷器である。１５は取水口２から導下されて水車５に至る取水管３の途中に介装されたフローセンサであり、該フローセンサ１５を信号ケーブル１６ａにより制御器８中の信号制御部１８へ接続する。   In FIG. 1, 1 is a water source, 2 is a water intake provided in the water source 1, 3 is a water intake pipe that is guided from the water intake 2 and opens into the fish tank 4, and 5 is an intermediate part of the water intake pipe 3. The generated water wheel 6 is a generator connected to the end of the rotating shaft of the water wheel 5, and the generator 6 is connected to a power control unit 9 built in a controller 8 installed separately by a power cable 7a. The control unit 9 is connected to an external power source 10 (commercial power source, private power generator, etc.) by a power cable 7b. 11a is an electric motor that drives the blower 11b. The electric motor 11a is connected to the electric power control unit 9 by an electric power cable 7c, and an air diffuser 11d is attached to the tip of the air pipe 11c led out from the blower 11b. 4 is led. 12 is a power storage device connected to the power control unit 9 by the power cable 7d, 13 is an emergency light connected to the power storage device 12 by the power cable 7e, and 14 is an electric loader connected to the power control unit 9 by the power cable 7f. It is. Reference numeral 15 denotes a flow sensor guided in the middle of the intake pipe 3 that is guided from the intake port 2 and reaches the water turbine 5. The flow sensor 15 is connected to the signal control unit 18 in the controller 8 by a signal cable 16 a. .

上述の構成において平時は、水源１と水車５との間の落差によって生じる水の自然エネルギーにより水車が回転させられ、その回転軸端に連結された発電機６が駆動して電力が発生する。発電機６により発電された電力は、電力ケーブル７ｃで繋がれている電動機１１ａの駆動電力として使用され、電動機１１ａの駆動によってブロワー１１ｂが駆動し、送気管１１ｃを通じて空気が散気装置１１ｄに送られ、養魚槽４内のエアレーションが行われる。そして発電された電力の余剰分は電力制御部９から電力ケーブル７ｄを通じて蓄電装置１２へ蓄えられたり、別の電力ケーブル７ｂを通じて外部電源１０へ送電されることで電力会社へ売電することもできる。なお、上述の蓄電装置１２への充電は、過充電を防止するため蓄電装置１２がフル充電状態になれば電力制御部９からの充電電力の給電が遮断される。   In the above configuration, during normal times, the water turbine is rotated by the natural energy of water generated by the head between the water source 1 and the water turbine 5, and the generator 6 connected to the end of the rotating shaft is driven to generate electric power. The electric power generated by the generator 6 is used as driving power for the electric motor 11a connected by the electric power cable 7c, the blower 11b is driven by driving the electric motor 11a, and air is sent to the diffuser 11d through the air supply pipe 11c. Then, aeration in the fish tank 4 is performed. The surplus generated power can be stored in the power storage device 12 from the power control unit 9 through the power cable 7d, or can be sold to the power company by being transmitted to the external power source 10 through another power cable 7b. . Note that the charging of the above-described power storage device 12 is interrupted when the power storage device 12 is fully charged in order to prevent overcharging.

水源１が渇水状態に陥ったり、或いは何らかの事故で取水管３が破損して管内の水の流れが停滞すれば、水車５が駆動不能となって発電機６による発電が停止することになる。しかしこのような場合でも、前述のように予め取水管３に取付けられたフローセンサ１５からの発信信号が信号ケーブル１６ａを介して制御器８中の信号制御部１８で処理されており、その指令が電力制御部９へ送られることで、蓄電装置１２に蓄えられていた電力を使用するシステムに切換えられる。従って、電動機１１ａは蓄電装置１２の電力により駆動されてブロワー１１ｂは運転し、緊急時でも途切れることなく養魚槽４のエアレーションが行われる。また、仮に蓄電装置１２に蓄えられた電力を使い果したとしても、制御器８中の電力制御部９により電力ケーブル７ｂを介して外部電源１０へ切換えられ、引続きブロワー１１ｂは運転されるので、緊急時においてもエアレーションが停止することを回避することができる。   If the water source 1 falls into a drought state, or the water intake pipe 3 is damaged due to some accident and the flow of water in the pipe stagnates, the water turbine 5 cannot be driven and the power generation by the generator 6 is stopped. However, even in such a case, as described above, the transmission signal from the flow sensor 15 attached to the intake pipe 3 in advance is processed by the signal control unit 18 in the controller 8 via the signal cable 16a. Is sent to the power control unit 9 to switch to a system that uses the power stored in the power storage device 12. Accordingly, the electric motor 11a is driven by the electric power of the power storage device 12 and the blower 11b is operated, and the aeration of the fish tank 4 is performed without interruption even in an emergency. Even if the power stored in the power storage device 12 is exhausted, the power control unit 9 in the controller 8 is switched to the external power source 10 via the power cable 7b, and the blower 11b is continuously operated. It is possible to avoid stopping aeration even in an emergency.

実施例１の構成を前提として、１７は養魚槽４内に浸漬された溶存酸素検出器であり、制御器８内に内蔵された信号機制御部１８へ信号ケーブル１６ａによって接続されている。そして該溶存酸素検出器１７から信号ケーブル１６ｂを介して信号機制御部１８へ送られる信号が予め定めた設定値を超えた場合、その指令が電源制御部９に送られ、電動機１１ａへの電力の供給は一旦遮断され、養魚槽４内の酸素量が低下し設定値を再び下回れば電動機１１ａへ電力が供給されブロワー１１ｂが駆動してエアレーションが行われる。また、停電時には、電力ケーブル７ｅにより蓄電装置１２に繋がれた場内の非常灯１３や、その他の電気負荷器１４へも前記蓄電された電力を流用すことができる。   On the premise of the configuration of the first embodiment, reference numeral 17 denotes a dissolved oxygen detector immersed in the fish tank 4, which is connected to a traffic signal controller 18 built in the controller 8 by a signal cable 16 a. When the signal sent from the dissolved oxygen detector 17 to the traffic signal controller 18 via the signal cable 16b exceeds a predetermined set value, the command is sent to the power source controller 9, and the electric power to the motor 11a is transmitted. When the supply is interrupted and the amount of oxygen in the fish tank 4 decreases and falls below the set value again, power is supplied to the motor 11a and the blower 11b is driven to perform aeration. Moreover, at the time of a power failure, the stored electric power can be diverted to the emergency light 13 in the field connected to the power storage device 12 by the power cable 7e and other electric loaders 14.

本発明システムの系統図である。It is a systematic diagram of the system of the present invention.

符号の説明Explanation of symbols

１ 水源
２ 取水口
４ 養魚槽
５ 水車
６ 発電機
８ 制御器
９ 電力制御部
１０ 外部電源
１１ａ 電動機
１１ｂ ブロワー
１２ 蓄電装置
１５ フローセンサ
１７ 溶存酸素検出器
１８ 信号機制御部
１４ 吐出口 DESCRIPTION OF SYMBOLS 1 Water source 2 Water intake 4 Fish farm 5 Water wheel 6 Generator 8 Controller 9 Electric power control part 10 External power supply 11a Electric motor 11b Blower 12 Power storage device 15 Flow sensor 17 Dissolved oxygen detector 18 Signal apparatus control part 14 Discharge port

Claims (2)

水源に設けられた取水口よりフローセンサを介して導下される水流により水車を回転させ、該水車の回転により養魚槽に水を供給すると共に発電機を駆動させ、該発電機からの発生電力を制御器中の電力制御部を介しブロワーの電動機に供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせ、前記発生電力の余剰分は前記電力制御部を介して蓄電装置に蓄電させ、取水口からの水流が途切れたときは前記フローセンサからの発信信号を制御器中の信号制御部を経て電力制御部に送信させ、蓄電装置からブロワーの電動機に給電しブロワーを駆動させて養魚槽内へのエアレーションを継続させ、蓄電装置に蓄えられた電力を使い果したときは外部電源から制御器中の電力制御部を介しブロワーの電動機に電力を供給してブロワーを駆動させることで養魚槽内にエアレーションを行わせることを特徴とする、養魚槽内におけるエアレーションシステム。   The turbine is rotated by the water flow guided through the flow sensor from the water intake provided in the water source, and the generator is driven by supplying water to the fish tank by the rotation of the turbine, and the generated power from the generator Is supplied to the motor of the blower via the power control unit in the controller and the blower is driven to aerate the fish tank, and the surplus generated power is stored in the power storage device via the power control unit. When the water flow from the water intake is interrupted, the transmission signal from the flow sensor is transmitted to the power control unit via the signal control unit in the controller, and the blower is driven by supplying power from the power storage device to the blower motor. When aeration into the fish tank is continued and the power stored in the power storage device is used up, power is supplied from the external power source to the blower motor via the power control unit in the controller. Characterized in that to perform the aeration fish tank by driving the over, aeration systems in fish farming tank. 養魚槽内には溶存酸素検出器が浸漬されており、該溶存酸素検出器からの検出信号を制御器中の信号制御部で処理して電力制御部へ指令し、該指令に基づきブロワーの電動機の運転制御を行わせることにより前記養魚槽内の溶存酸素量を適正値に保持させることを特徴とする、請求項１記載の養魚槽内におけるエアレーションシステム。   A dissolved oxygen detector is immersed in the fish tank, and a detection signal from the dissolved oxygen detector is processed by a signal control unit in the controller and commanded to the power control unit. The aeration system in a fish tank according to claim 1, wherein the amount of dissolved oxygen in the fish tank is maintained at an appropriate value by performing the operation control.
JP2005003358A 2005-01-11 2005-01-11 Aeration system in fish-breeding tank Pending JP2006191801A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797669A (en) * 2012-08-27 2012-11-28 苏州创泰电子有限公司 Controller of oxygen pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0320487U (en) * 1989-07-06 1991-02-28
JPH06182372A (en) * 1992-11-20 1994-07-05 Shimizu Corp Seawater purifying equipment
JPH06209675A (en) * 1993-01-19 1994-08-02 Mitsubishi Heavy Ind Ltd Aerator for land power transmitting type and sea surface culturing crawl
JPH07170880A (en) * 1993-12-20 1995-07-11 Hiroshi Noda Water tank controlling apparatus
JPH1019149A (en) * 1996-07-01 1998-01-23 Kubota Corp Emergency cutoff valve with intake
JP2001176678A (en) * 1999-12-21 2001-06-29 Japan Storage Battery Co Ltd Lighting device
JP2003080048A (en) * 2001-09-12 2003-03-18 Kimihiko Okanoe Gas-liquid mixing apparatus
JP2004044508A (en) * 2002-07-12 2004-02-12 Toshiba Corp Wind power plant

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0320487U (en) * 1989-07-06 1991-02-28
JPH06182372A (en) * 1992-11-20 1994-07-05 Shimizu Corp Seawater purifying equipment
JPH06209675A (en) * 1993-01-19 1994-08-02 Mitsubishi Heavy Ind Ltd Aerator for land power transmitting type and sea surface culturing crawl
JPH07170880A (en) * 1993-12-20 1995-07-11 Hiroshi Noda Water tank controlling apparatus
JPH1019149A (en) * 1996-07-01 1998-01-23 Kubota Corp Emergency cutoff valve with intake
JP2001176678A (en) * 1999-12-21 2001-06-29 Japan Storage Battery Co Ltd Lighting device
JP2003080048A (en) * 2001-09-12 2003-03-18 Kimihiko Okanoe Gas-liquid mixing apparatus
JP2004044508A (en) * 2002-07-12 2004-02-12 Toshiba Corp Wind power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797669A (en) * 2012-08-27 2012-11-28 苏州创泰电子有限公司 Controller of oxygen pump

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