JPH0410395B2 - - Google Patents

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Publication number
JPH0410395B2
JPH0410395B2 JP61125991A JP12599186A JPH0410395B2 JP H0410395 B2 JPH0410395 B2 JP H0410395B2 JP 61125991 A JP61125991 A JP 61125991A JP 12599186 A JP12599186 A JP 12599186A JP H0410395 B2 JPH0410395 B2 JP H0410395B2
Authority
JP
Japan
Prior art keywords
seawater
water
shielding case
protective jacket
equipment
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 - Lifetime
Application number
JP61125991A
Other languages
Japanese (ja)
Other versions
JPS62282680A (en
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 filed Critical
Priority to JP61125991A priority Critical patent/JPS62282680A/en
Publication of JPS62282680A publication Critical patent/JPS62282680A/en
Publication of JPH0410395B2 publication Critical patent/JPH0410395B2/ja
Granted legal-status Critical Current

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  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Cleaning In General (AREA)
  • Prevention Of Fouling (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、海水または河川水を冷却水として利
用する熱交換器またはそれに接続された管路、そ
の他冷却水の侵入する水系内構造物などのような
海水等利用機器において、これらを汚損するおそ
れのある水棲生物が付着し繁殖するのを防止する
装置に関するものである。
Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to heat exchangers that use seawater or river water as cooling water, pipes connected thereto, and other structures within water systems into which cooling water enters. The present invention relates to a device that prevents aquatic organisms that may contaminate equipment from adhering to and breeding in equipment that uses seawater, such as equipment.

(従来技術) 従来より、火力発電所などでは復水器や軸受冷
却水冷却器などの熱交換器用の冷却水として、海
水または河川水が利用されている。このような発
電プラントでは、冷却水系路内での特殊な過流部
分や停滞水域の発生部分または水中構造物の下流
域側などが水棲生物の生息し易い場所となり、そ
こに集中的に異常繁殖した水棲生物は、水温の変
化や送水の停止などによつて脱落して移動し、復
水器や管路その他の水中構造物に付着すると、管
閉塞による伝熱面積の喪失、圧力損失の増加によ
る水量の減少、管内汚損による伝熱特性の低下の
ような伝熱性能の低下、または生物による腐食の
発生などの障害が起こる。このような障害の起こ
るのを防止するため、海水等利用機器に水棲生物
が付着し繁殖するのを防止する方法が提案されて
いる。例えば、冷却水の中へ塩素を注入すること
が行われているが、塩素は高圧容器により運搬し
なければならずその取扱いが容易ではなく、且つ
危険であるため、特公昭52−33582号および特公
昭54−40472号に記載のように、海水を電気分解
して海水中の塩素イオンから次亜塩素酸を発生さ
せ、これによつて水棲生物の付着汚損を防止する
方法が用いられている。しかし、発電プラントに
おいては大量の冷却水が必要であるため、残留塩
素の濃度が極く低い場合であつても、これが海や
河川に放流されると環境に与える影響が大である
ことから、この方法は忌避される傾向にある。塩
素注入に代わる方法として、特開昭53−85551号
に記載のように、冷却水系の水を間欠的にオゾン
含有気体で置換する方法が提案されている。しか
しこの方法によると、冷却水系を水抜きする際
に、オゾン含有気体と置換するため系統の送水停
止など煩雑な切換運転やプラントの負荷制限など
が必要となり、また、オゾン含有気体を排出する
際に、オゾン分解装置を経由して未反応オゾンを
分解し毒性を皆無にしてから大気に放出するなど
の対応が必要となるなど、そのための運転操作や
処理が非常に複雑になるという問題がある。
(Prior Art) Conventionally, seawater or river water has been used in thermal power plants and the like as cooling water for heat exchangers such as condensers and bearing cooling water coolers. In such power plants, aquatic organisms tend to inhabit special overflow areas in the cooling water system, areas where stagnant water occurs, or the downstream side of underwater structures, and abnormal breeding occurs intensively there. When aquatic organisms that have been exposed to water fall off and move due to changes in water temperature or stoppage of water supply, and attach to condensers, pipes, or other underwater structures, they can cause loss of heat transfer area and increase pressure loss due to pipe blockage. Failures may occur, such as a decrease in the amount of water due to water leakage, a decrease in heat transfer performance such as a decrease in heat transfer characteristics due to contamination inside the pipes, or corrosion caused by living organisms. In order to prevent such problems from occurring, methods have been proposed to prevent aquatic organisms from adhering to and breeding in equipment that utilizes seawater. For example, chlorine is injected into cooling water, but chlorine must be transported in a high-pressure container, which is difficult and dangerous to handle. As described in Japanese Patent Publication No. 54-40472, a method is used in which seawater is electrolyzed to generate hypochlorous acid from chlorine ions in the seawater, thereby preventing the adhesion and fouling of aquatic organisms. . However, power plants require large amounts of cooling water, so even if the concentration of residual chlorine is extremely low, if it is discharged into the sea or rivers, it will have a large impact on the environment. This method tends to be avoided. As an alternative to chlorine injection, a method has been proposed in which the water in the cooling water system is intermittently replaced with an ozone-containing gas, as described in JP-A-53-85551. However, with this method, when draining water from the cooling water system, it is necessary to perform complicated switching operations such as stopping water supply to the system and limiting the load on the plant in order to replace the ozone-containing gas with ozone-containing gas. However, there is a problem in that the operation and processing required to do so is extremely complicated, as it is necessary to decompose unreacted ozone via an ozone decomposition device to eliminate toxicity before releasing it into the atmosphere. .

(発明が解決しようとする問題点) 本発明は、上述の問題に鑑み、塩素を用いる場
合のように環境汚染の問題を生じることなく、オ
ゾン含有気体を用いる場合のように運転操作や処
理が非常に複雑になるという問題を生じることな
く、海水等利用機器における水棲生物の付着を防
止するための装置を提供することを目的としたも
のである。
(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention has been proposed to solve the problems described above. The object of the present invention is to provide a device for preventing aquatic organisms from adhering to equipment that utilizes seawater, etc., without causing problems such as excessive complexity.

(問題点を解決するための手段) 上述の問題点を解決するための技術的手段は、
海水または河川水を冷却水として利用する熱交換
器などの海水等利用機器Aにおいて、該海水等利
用機器Aに取付けられる基台9と、該基台9に取
付けられ前記海水等利用機器Aの内部を照射する
ための紫外線ランプ10と、該紫外線ランプ10
を水密に覆う少なくとも一部は透明な保護ジヤケ
ツト12と、前記紫外線ランプ10と前記保護ジ
ヤケツト12との間に回転可能に設けられスリツ
ト22を有した遮蔽ケース21と、該遮蔽ケース
21を回転駆動する駆動装置24とよりなること
を特徴とするものである。
(Means for solving the problems) The technical means for solving the above problems are:
In seawater utilization equipment A such as a heat exchanger that uses seawater or river water as cooling water, there is a base 9 attached to the seawater utilization equipment A, and a base 9 attached to the base 9 of the seawater utilization equipment A. an ultraviolet lamp 10 for irradiating the interior, and the ultraviolet lamp 10
a protective jacket 12 that is at least partially transparent and covers the UV lamp 10 and the protective jacket 12 in a watertight manner; a shielding case 21 rotatably provided between the ultraviolet lamp 10 and the protective jacket 12 and having a slit 22; and a shielding case 21 that is rotatably driven. It is characterized by comprising a drive device 24 that performs the following steps.

(実施例) 以下、本発明の実施例を図面に基づいて説明す
る。
(Example) Hereinafter, an example of the present invention will be described based on the drawings.

第1図は水棲生物の付着を防止する付着防止装
置1の断面図を示しており、この付着防止装置1
は、例えば、復水器、これに接続された管路、ま
たはストレーナなど海水等利用機器Aの殻体2に
設けられた管台3のフランジ部3aにボルト4に
より取付けられている。
FIG. 1 shows a sectional view of an adhesion prevention device 1 for preventing aquatic organisms from adhering to the adhesion prevention device 1.
is attached by bolts 4 to a flange portion 3a of a nozzle 3 provided on a shell 2 of a seawater utilization equipment A such as a condenser, a conduit connected thereto, or a strainer.

付着防止装置1は、つば状のフランジカバー
5、フランジカバー5と一体に設けられた円筒状
の筒枠6、および筒枠6にボルト7で取付けられ
た円板状の基板8により基台9が構成されてお
り、この基台9の基板8には、口金部10aを有
する低圧水銀放電ランプ10がその取付軸部10
bのねじ部10cがねじ込まれて取付けられてお
り、取付軸部10bの中心から電線11が引き出
されている。フランジカバー5には、つば部12
aを有した有底円筒状の保護ジヤケツト12がパ
ツキン15を挟んで第1図の右から左へ挿通され
た後、リング状のパツキン13aおよび押え具1
3を介してつば部12aがボルト14により固定
され、水密に取付けられている。この保護ジヤケ
ツト12は、低圧水銀放電ランプ10から放射さ
れる紫外線を通過させるとともに、低圧水銀放電
ランプ10を冷却水の水圧から保護するもので、
例えば石英ガラスからなつている。基台9には、
合成樹脂からなり外周に歯車17aが形成された
回転リング17が、低圧水銀放電ランプ10の取
付軸部10bを中心に回転可能に取付けられてお
り、この歯車17aに外接する小歯車23がモー
タ24により回転駆動されるようになつている。
回転リング17には、有底円筒状の遮蔽ケース2
1が低圧水銀放電ランプ10を覆うように取付け
られている。遮蔽ケース21は、周面部21aの
一箇所に軸線方向に延びるスリツト22が、底部
21bには多数の小孔21cが、それぞれ設けら
れており、且つその内面は鏡面に仕上げられてお
り、これによつて低圧水銀放電ランプ10から放
射される紫外線が遮蔽ケース21の内面で反射し
且つスリツト22から集光されて放射されしかも
小孔21cからも放射されるようになつている。
したがつて、モータ24の回転によつて遮蔽ケー
ス21が回転すると、スリツト22および小孔2
1cから放射される紫外線が回転することとな
る。第2図によく示されているように、フランジ
カバー5には保護ジヤケツト12の外周を覆つて
保護するための線状材からなる保護ガード26が
取付けられている。なお、25はカバーである。
The adhesion prevention device 1 includes a flange-shaped flange cover 5, a cylindrical tube frame 6 provided integrally with the flange cover 5, and a disk-shaped base plate 8 attached to the tube frame 6 with bolts 7. A low-pressure mercury discharge lamp 10 having a base 10a is mounted on the base plate 8 of the base 9, and a mounting shaft 10 thereof is mounted on the substrate 8 of the base 9.
The screw portion 10c of b is screwed in and attached, and the electric wire 11 is drawn out from the center of the attachment shaft portion 10b. The flange cover 5 has a flange portion 12.
After the bottomed cylindrical protective jacket 12 having a diameter 15a is inserted from right to left in FIG.
The collar portion 12a is fixed with bolts 14 through the bolts 3, and is watertightly attached. This protective jacket 12 allows ultraviolet rays emitted from the low-pressure mercury discharge lamp 10 to pass through, and protects the low-pressure mercury discharge lamp 10 from the water pressure of the cooling water.
For example, it is made of quartz glass. On the base 9,
A rotating ring 17 made of synthetic resin and having a gear 17a formed on its outer periphery is rotatably attached to the low-pressure mercury discharge lamp 10 around a mounting shaft 10b, and a small gear 23 circumscribing this gear 17a is connected to a motor 24. It is designed to be rotationally driven by.
The rotating ring 17 has a cylindrical shielding case 2 with a bottom.
1 is attached to cover the low pressure mercury discharge lamp 10. The shielding case 21 has a slit 22 extending in the axial direction at one location on the peripheral surface 21a, and a number of small holes 21c on the bottom 21b, and has a mirror-finished inner surface. Therefore, the ultraviolet rays emitted from the low-pressure mercury discharge lamp 10 are reflected on the inner surface of the shielding case 21, concentrated and emitted from the slit 22, and further emitted from the small hole 21c.
Therefore, when the shielding case 21 rotates due to the rotation of the motor 24, the slit 22 and the small hole 2
The ultraviolet rays emitted from 1c will rotate. As clearly shown in FIG. 2, a protective guard 26 made of a wire material is attached to the flange cover 5 to cover and protect the outer periphery of the protective jacket 12. Note that 25 is a cover.

上述の付着防止装置1によると、低圧水銀放電
ランプ10に電線11を介して電源を接続するこ
とにより、波長253.7nmの殺菌線を含んだ紫外線
が放射され、この殺菌線が遮蔽ケース21によつ
て一方向に集光され且つモータ24の駆動により
放射方向が10〜100回/分程度の速さで回転移動
し、周囲を間欠的に照射することとなる。殺菌線
は、生物の細胞を構成している核酸を破壊する作
用があり、これによつてこの周囲に水棲生物の付
着、生息および繁殖が忌避される環境が形成され
るのである。遮蔽ケース21によつて殺菌線が集
光されるため、小出力の低圧水銀放電ランプ10
であつても遠方にまで充分な強さの殺菌線が到達
し、水が濁つている場合にも広い領域にまで効果
を及ぼすこととなる。殺菌線の照射によつては、
水が汚染されることはないから、この水が大量に
放出されても自然界の生態には何の影響も与え
ず、また何らの特別な排水処理を施す必要もな
い。
According to the above-described adhesion prevention device 1, by connecting a power source to the low-pressure mercury discharge lamp 10 via the electric wire 11, ultraviolet rays containing germicidal radiation with a wavelength of 253.7 nm are emitted, and this germicidal radiation is transmitted through the shielding case 21. The light is focused in one direction and rotated in the radiation direction at a speed of about 10 to 100 times per minute by driving the motor 24, thereby intermittently irradiating the surrounding area. Germicidal rays have the effect of destroying the nucleic acids that make up the cells of living organisms, thereby creating an environment around them that prevents aquatic organisms from adhering to, inhabiting, and breeding. Since the sterilizing radiation is concentrated by the shielding case 21, the low-pressure mercury discharge lamp 10 with a small output
Even if the water is cloudy, the sterilizing radiation will be strong enough to reach far away, and will be effective over a wide area even if the water is cloudy. Depending on the irradiation with germicidal radiation,
Since the water is not contaminated, even if large amounts of this water are released, it will not have any effect on the natural ecology, and there is no need for any special wastewater treatment.

上述の実施例においては、遮蔽ケース21が低
圧水銀放電ランプ10と保護ジヤケツト12との
中間の空気中にあるため、遮蔽ケース21を回転
させるための機構を放水構造とする必要がなく構
成が容易であり、また、殺菌線が保護ジヤケツト
12から水中へ直接的に放射されるので、殺菌線
の減衰が少なく効率がよい。低圧水銀放電ランプ
10を交換するには、ボルト7をゆるめて基板8
を取外すことにより、海水等利用機器Aの運転を
停止することなく容器に交換できる。
In the above-described embodiment, the shielding case 21 is located in the air between the low-pressure mercury discharge lamp 10 and the protective jacket 12, so the mechanism for rotating the shielding case 21 does not need to be a water-discharging structure, making the structure easy. Moreover, since the germicidal radiation is directly emitted from the protective jacket 12 into the water, the attenuation of the germicidal radiation is small and the efficiency is high. To replace the low pressure mercury discharge lamp 10, loosen the bolts 7 and remove the board 8.
By removing it, it can be replaced with a container without stopping the operation of seawater utilization equipment A.

上述の実施例において、保護ジヤケツト12の
殺菌線の透過を必要としない部分には、その内面
に蒸着アルミなどによるコーテイングを施して照
射効率を高めるようにしておいてもよい。遮蔽ケ
ース21のスリツト22の寸法形状および個数は
任意に選定することができる。この付着防止装置
1を、海水等利用機器の適所に適当数設けること
により、水棲生物の付着および繁殖が効果的に防
止される。
In the above-described embodiment, the inner surface of the protective jacket 12 which does not need to be penetrated by germicidal radiation may be coated with vapor-deposited aluminum or the like to increase the irradiation efficiency. The size, shape, and number of slits 22 in the shielding case 21 can be arbitrarily selected. By providing an appropriate number of adhesion prevention devices 1 at appropriate locations on equipment that utilizes seawater, etc., adhesion and breeding of aquatic organisms can be effectively prevented.

(発明の効果) 本発明によると、海水等利用機器における水棲
生物の付着や繁殖を防止することができ、しか
も、従来のような塩素を用いる場合のように環境
汚染の問題を生じることなく、オゾン含有気体を
用いる場合のように排水のための運転操作や処理
が非常に複雑になるという問題を生じないのであ
る。また、紫外線ランプから放射される紫外線が
遮蔽ケースにより集光され且つ回転されるため、
遠方にまで充分な強さの殺菌線が到達し広い領域
にまで付着防止の効果を及ぼすことが可能であ
る。また、装置が小型であり、その構造および取
扱いが簡単であるため、水棲生物の付着防止のた
めの設備費用および運転経費が低く、また保守点
検が容易であるという効果をも有する。
(Effects of the Invention) According to the present invention, it is possible to prevent aquatic organisms from adhering to and breeding in equipment that utilizes seawater, etc., and without causing environmental pollution problems as in the case of using conventional chlorine. Unlike the case where ozone-containing gas is used, there is no problem that the operation and treatment for drainage become very complicated. In addition, since the ultraviolet rays emitted from the ultraviolet lamp are focused and rotated by the shielding case,
Sterilizing radiation of sufficient strength can reach long distances and can exert an adhesion prevention effect over a wide area. In addition, since the device is small and its structure and handling are simple, it has the advantage that equipment costs and operating costs for preventing aquatic organisms from adhering to it are low, and maintenance and inspection are easy.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例の付着防止装置を海水
等利用機器に取付けた状態を示す正面断面図、第
2図は同付着防止装置の左側面図である。 A……海水等利用機器、1……付着防止装置
(水棲生物付着防止装置)、9……基台、10……
低圧水銀放電ランプ(紫外線ランプ)、12……
保護ジヤケツト、21……遮蔽ケース、22……
スリツト、24……モータ(駆動装置)。
FIG. 1 is a front sectional view showing a state in which an adhesion prevention device according to an embodiment of the present invention is attached to equipment for utilizing seawater, etc., and FIG. 2 is a left side view of the same adhesion prevention device. A...Equipment using seawater, etc., 1...Adhesion prevention device (aquatic organism adhesion prevention device), 9...Base, 10...
Low-pressure mercury discharge lamp (ultraviolet lamp), 12...
Protective jacket, 21... Shielding case, 22...
Slit, 24...Motor (drive device).

Claims (1)

【特許請求の範囲】[Claims] 1 海水または河川水を冷却水として利用する熱
交換器などの海水等利用機器において、該海水等
利用機器に取付けられる基台と、該基台に取付け
られ前記海水等利用機器の内部を照射するための
紫外線ランプと、該紫外線ランプを水密に覆う少
なくとも一部は透明な保護ジヤケツトと、前記紫
外線ランプと前記保護ジヤケツトとの間に回転可
能に設けられスリツトを有した遮蔽ケースと、該
遮蔽ケースを回転駆動する駆動装置とよりなるこ
とを特徴とする海水等利用機器における水棲生物
付着防止装置。
1. In a seawater utilization device such as a heat exchanger that uses seawater or river water as cooling water, a base attached to the seawater utilization device and the inside of the seawater utilization device attached to the base are irradiated. an at least partially transparent protective jacket that covers the ultraviolet lamp in a watertight manner; a shielding case rotatably provided between the ultraviolet lamp and the protective jacket and having a slit; and the shielding case. A device for preventing the adhesion of aquatic organisms in equipment using seawater, etc., comprising: a drive device for rotationally driving an aquatic organism.
JP61125991A 1986-05-30 1986-05-30 Aquatic-life adhesion preventive device in seawaters utilizing apparatus Granted JPS62282680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61125991A JPS62282680A (en) 1986-05-30 1986-05-30 Aquatic-life adhesion preventive device in seawaters utilizing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61125991A JPS62282680A (en) 1986-05-30 1986-05-30 Aquatic-life adhesion preventive device in seawaters utilizing apparatus

Publications (2)

Publication Number Publication Date
JPS62282680A JPS62282680A (en) 1987-12-08
JPH0410395B2 true JPH0410395B2 (en) 1992-02-25

Family

ID=14924021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61125991A Granted JPS62282680A (en) 1986-05-30 1986-05-30 Aquatic-life adhesion preventive device in seawaters utilizing apparatus

Country Status (1)

Country Link
JP (1) JPS62282680A (en)

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JP2010187637A (en) * 2009-02-20 2010-09-02 Sessile Research Corp Method for preventing adhesion and proliferation of attached marine organism
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4382185B2 (en) * 1999-03-12 2009-12-09 株式会社タクミナ Sterilization lamp and liquid supply device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010187637A (en) * 2009-02-20 2010-09-02 Sessile Research Corp Method for preventing adhesion and proliferation of attached marine organism
CN107850408A (en) * 2015-06-09 2018-03-27 皇家飞利浦有限公司 Component comprising wet carriage body and at least one anti-alluvial energy source
JP2018524155A (en) * 2015-06-09 2018-08-30 コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. An assembly comprising a wet compartment and at least one antifouling energy source

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