JP2935798B2 - Corrosion protection management method for heat exchanger cooling pipes - Google Patents
Corrosion protection management method for heat exchanger cooling pipesInfo
- Publication number
- JP2935798B2 JP2935798B2 JP5299064A JP29906493A JP2935798B2 JP 2935798 B2 JP2935798 B2 JP 2935798B2 JP 5299064 A JP5299064 A JP 5299064A JP 29906493 A JP29906493 A JP 29906493A JP 2935798 B2 JP2935798 B2 JP 2935798B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- heat exchanger
- film
- management method
- hue
- 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
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、海水冷却器中に鉄イオ
ンを供給して銅合金製チューブの内面に防食皮膜を形成
する海水熱交換器冷却管の防食管理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling corrosion of a seawater heat exchanger cooling pipe in which iron ions are supplied into a seawater cooler to form a corrosion protection film on the inner surface of a copper alloy tube.
【０００２】[0002]
【従来の技術】従来より、復水器、石油精製装置等の海
水熱交換器にあっては、海水中に鉄イオンを供給して、
銅合金製チューブの内面に鉄イオンによる防食皮膜の形
成が行なわれてきた。2. Description of the Related Art Conventionally, in seawater heat exchangers such as condensers and petroleum refining units, iron ions are supplied to seawater,
An anticorrosion film has been formed on the inner surface of a copper alloy tube by iron ions.
【０００３】この防食皮膜の耐食性を評価するために
は、分極抵抗値による測定がなされているが、鉄皮膜形
成後に、耐食性の皮膜となる下地の耐食性皮膜が形成さ
れるため、分極抵抗値が上昇するには多くて１〜２ケ月
のタイムラグがある。従って、鉄イオンの供給初期にお
いては十分な鉄イオンによる防食皮膜が形成されている
にも拘らず、分極抵抗値が上昇しないために、未だ鉄イ
オンの供給が不十分であるとの誤解を生じる恐れがあっ
た。[0003] In order to evaluate the corrosion resistance of this anticorrosion film, a measurement is made based on the polarization resistance value. However, after the iron film is formed, a base corrosion resistance film which becomes a corrosion resistance film is formed. There is a time lag of at most 1-2 months to rise. Therefore, in spite of the fact that a sufficient anticorrosion film is formed by iron ions in the initial stage of iron ion supply, the polarization resistance value does not increase, which causes a misunderstanding that iron ion supply is still insufficient. There was fear.
【０００４】また、従来、防食皮膜である鉄皮膜中の鉄
含有率の分析は、装置を停止させ、かつ鉄皮膜を分析す
るのに多くの時間がかかるという欠点がある。[0004] Conventionally, the analysis of the iron content in an iron film, which is an anticorrosion film, has the disadvantage that it takes a lot of time to stop the apparatus and to analyze the iron film.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上述したよ
うな従来技術の課題を解消し、運転中にリアルタイムで
鉄の含有率を測定し、鉄皮膜の形成状況を確認でき、ま
たその値によって海水中の鉄イオン量を調整することが
できる熱交換器冷却管の防食管理方法を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and measures the iron content in real time during operation to confirm the formation state of the iron film. It is an object of the present invention to provide a method for managing corrosion prevention of a heat exchanger cooling pipe in which the amount of iron ions in seawater can be adjusted by the method.
【０００６】[0006]
【課題を解決するための手段】本発明の上記目的は、防
食皮膜である鉄皮膜中の鉄含有率を色相によって評価す
ることによって達成される。The above objects of the present invention can be attained by evaluating the iron content in an iron film, which is an anticorrosion film, based on hue.
【０００７】すなわち、本発明は、海水熱交換器に鉄イ
オンを供給して、銅合金製チューブの内面に防食皮膜を
形成する海水熱交換器冷却管の防食方法において、前記
チューブ内面の防食皮膜となる鉄を主成分とする鉄皮膜
中の鉄含有率を一定方向の色相によってモニタリングす
ることを特徴とする熱交換器冷却管の防食管理方法にあ
る。That is, the present invention relates to a method for preventing corrosion of a cooling pipe of a seawater heat exchanger in which iron ions are supplied to a seawater heat exchanger to form an anticorrosion film on the inner surface of a copper alloy tube. A corrosion prevention management method for a heat exchanger cooling pipe, characterized in that the iron content in an iron film containing iron as a main component is monitored by a hue in a certain direction.
【０００８】また、本発明は、前記モニタリングより鉄
イオン量を調整する熱交換器冷却管の防食管理方法にあ
る。[0008] The present invention also resides in a method for managing corrosion prevention of a heat exchanger cooling pipe, which adjusts the amount of iron ions based on the monitoring.
【０００９】[0009]
【作用】本発明では、防食皮膜（鉄皮膜）中の鉄含有率
を、一定方向、好ましくは赤色方向の色相によってモニ
タリングし、このモニタリングの結果、鉄含有率が所定
値に満たない場合には、さらに海水熱交換器に鉄イオン
を供給する。従って、運転中にリアルタイムで鉄皮膜の
形成状況を確認でき、またその値によって海水中の鉄イ
オン量をさらに調整することができる。According to the present invention, the iron content in the anticorrosion film (iron film) is monitored by the hue in a certain direction, preferably in the red direction, and as a result of the monitoring, if the iron content is less than a predetermined value, And supply iron ions to the seawater heat exchanger. Therefore, the formation state of the iron film can be confirmed in real time during operation, and the amount of iron ions in seawater can be further adjusted based on the value.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を基づき説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、本発明の防食管理方法を示す概略
図であり、同図において、１は水室、２は冷却管、３は
ファイバースコープ、４は発光・受光部、５はバルブ、
６は測定部、７はマイクロコンピュータ部、８は鉄イオ
ン供給装置をそれぞれ示す。また、図２は、本発明の防
食管理方法に用いられるモニタリング装置の詳細を示す
もので、図１と同一の符号は同一のものを示し、４１は
光源用ファイバー、４２は試料測定用ファイバー、６１
は光電変換部、６２はＡ／Ｄ変換部、９はディスプレイ
である。FIG. 1 is a schematic diagram showing a method for managing corrosion prevention according to the present invention. In the figure, 1 is a water chamber, 2 is a cooling pipe, 3 is a fiberscope, 4 is a light emitting / receiving section, 5 is a valve,
Reference numeral 6 denotes a measurement unit, 7 denotes a microcomputer unit, and 8 denotes an iron ion supply device. FIG. 2 shows the details of a monitoring device used in the anticorrosion management method of the present invention. The same reference numerals as those in FIG. 1 denote the same components, 41 is a light source fiber, 42 is a sample measuring fiber, 61
, A photoelectric conversion unit; 62, an A / D conversion unit;
【００１２】図１に示すように、本発明に係る海水熱交
換器冷却管の鉄含有率モニタリング装置は、測定部６と
マイクロコンピュター部７を主要部とし、この測定部６
の側面にファイバースコープ３が設けられ、このファイ
バースコープは水密構造であり、熱交換器の水室１を通
過し、その先端の発光・受光部４は、冷却管２端部に挿
入して固定されている。このファイバースコープ３は、
使用しない時は抜いて、バルブ５が閉じられている。As shown in FIG. 1, an apparatus for monitoring the iron content of a cooling pipe of a seawater heat exchanger according to the present invention comprises a measuring section 6 and a microcomputer section 7 as main parts.
The fiberscope 3 is provided on the side surface of the heat exchanger. This fiberscope has a watertight structure, passes through the water chamber 1 of the heat exchanger, and the light emitting / receiving part 4 at the tip thereof is inserted into the end of the cooling pipe 2 and fixed. Have been. This fiberscope 3
The valve 5 is closed when not in use and the valve 5 is closed.
【００１３】このようなモニタリング装置の詳細は、図
２に示されるように、測定部６で光源（キセノンラン
プ）を発光させ、光源用ファイバー４１を通して試料
（冷却管）２に照射させる。その反射光は、試料測定用
ファイバー４２を通して光電変換部６１で電流として出
力される。電流はＡ／Ｄ変換部６２でさらにＡ／Ｄ変換
された後、マイクロコンピュータ部７で一定方向、好ま
しくは赤方向の色相を計算し、鉄付着率として、例えば
ディスプレイ９に表示される。As shown in FIG. 2, the details of such a monitoring device are as follows. The light source (xenon lamp) is emitted by the measuring unit 6 and the sample (cooling tube) 2 is irradiated through the light source fiber 41. The reflected light is output as an electric current by the photoelectric conversion unit 61 through the sample measuring fiber 42. After the current is further A / D-converted by the A / D converter 62, the microcomputer 7 calculates the hue in a certain direction, preferably red, and displays the hue in the display 9, for example, as the iron adhesion rate.
【００１４】このように、本発明では、冷却管における
鉄皮膜中の鉄含有率を一定方向の色相によって、モニタ
リングするものである。このようなモニタリング装置と
して色彩色差計ＣＲ−３００シリーズ（ミノルタ社製）
等がある。また、色相の表色系として、ＣＩＥ（国際照
明委員会）１９３１ ＸＹＺ表色系（ＪＩＳ Ｚ ８７
０１）、ＣＩＥ１９７６ Ｌ*ａ*ｂ*表色系（ＪＩＳ
Ｚ ８７２９）、ＣＩＥ１９７６ ＵＣＳ表色系（ＪＩ
Ｓ Ｚ ８７２９）等があるが、いずれの表色系を用い
てもよい。As described above, in the present invention, the iron content in the iron film in the cooling pipe is monitored by the hue in a certain direction. As such a monitoring device, a color difference meter CR-300 series (Minolta)
Etc. As a color system of hue, CIE (International Commission on Illumination) 1931 XYZ color system (JIS Z87)
01), CIE1976 L * a * b * color system (JIS
Z 8729), CIE1976 UCS color system (JI
S Z 8729), but any color system may be used.
【００１５】実際に防食皮膜（鉄皮膜）中の鉄含有率と
赤方向の色相を測定した測定結果を図３に示す。この測
定においては、Ｌ*ａ*ｂ*表色系を用い、モニタリング
装置として色彩色差計ＣＲ−３００（ミノルタ社製）を
用いた。この図３の結果より、鉄含有率が増加するほど
赤方向の色相も大きくなり、相関係数も０．８３６と良
い結果が得られた。FIG. 3 shows the results of actually measuring the iron content in the anticorrosion film (iron film) and the hue in the red direction. In this measurement, an L * a * b * color system was used, and a colorimeter CR-300 (manufactured by Minolta) was used as a monitoring device. From the results in FIG. 3, as the iron content increases, the hue in the red direction also increases, and a good result was obtained with a correlation coefficient of 0.836.
【００１６】このような色相のモニタリングの結果、防
食皮膜（鉄皮膜）中の鉄含有率が所定値以下、例えば１
０重量％以下の場合、マイクロコンピュータ部７から鉄
イオン供給装置８に信号を与えて海水中の鉄イオン含有
量が増加するように鉄イオンの供給状態を調整する。As a result of monitoring such a hue, the iron content in the anticorrosion film (iron film) is less than a predetermined value, for example, 1
When the content is 0% by weight or less, a signal is supplied from the microcomputer unit 7 to the iron ion supply device 8 to adjust the supply state of iron ions so that the iron ion content in seawater increases.
【００１７】[0017]
【発明の効果】以上説明したように、本発明は、鉄含有
率を一定方向、特に赤方向の色相でモニタリングするこ
とにより、装置の運転中にリアルタイムで鉄皮膜の形成
状況を確認でき、これに基づいて海水中への鉄イオンの
供給状態を調整することができる。As described above, according to the present invention, by monitoring the iron content in a certain direction, particularly in the hue in the red direction, it is possible to confirm the formation state of the iron film in real time during the operation of the apparatus. The supply state of iron ions into seawater can be adjusted based on the above.
【図１】 本発明の防食管理方法を示す概略図。FIG. 1 is a schematic diagram showing a method for managing corrosion prevention according to the present invention.
【図２】 本発明の防食管理方法に用いられるモニタリ
ング装置の詳細を示す図。FIG. 2 is a diagram showing details of a monitoring device used in the anticorrosion management method of the present invention.
【図３】 赤方向の色相と鉄含有率の関係を示すグラ
フ。FIG. 3 is a graph showing the relationship between red hue and iron content.
１：水室、２：冷却管、３：ファイバースコープ、４：
発光・受光部、４１：光源用ファイバー、４２：試料測
定用ファイバー、５：バルブ、６：測定部、６１：光電
変換部、６２：Ａ／Ｄ変換部、７：マイクロコンピュー
タ部、８：鉄イオン供給装置、９：ディスプレイ。1: water chamber, 2: cooling pipe, 3: fiberscope, 4:
Light-emitting / light-receiving section, 41: fiber for light source, 42: fiber for sample measurement, 5: bulb, 6: measuring section, 61: photoelectric conversion section, 62: A / D conversion section, 7: microcomputer section, 8: iron Ion supply device, 9: display.
Claims (2)
合金製チューブの内面に防食皮膜を形成する海水熱交換
器冷却管の防食方法において、前記チューブ内面の防食
皮膜となる鉄を主成分とする鉄皮膜中の鉄含有率を一定
方向の色相によってモニタリングすることを特徴とする
熱交換器冷却管の防食管理方法。In a method of preventing corrosion of a cooling pipe of a seawater heat exchanger, which supplies iron ions to a seawater heat exchanger to form an anticorrosion film on the inner surface of a copper alloy tube, the iron serving as an anticorrosion film on the inner surface of the tube is removed. An anticorrosion management method for a heat exchanger cooling pipe, characterized in that the iron content in an iron film as a main component is monitored by a hue in a certain direction.
する請求項１に記載の熱交換器冷却管の防食管理方法。2. The method according to claim 1, wherein the amount of iron ions is adjusted based on the monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5299064A JP2935798B2 (en) | 1993-11-05 | 1993-11-05 | Corrosion protection management method for heat exchanger cooling pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5299064A JP2935798B2 (en) | 1993-11-05 | 1993-11-05 | Corrosion protection management method for heat exchanger cooling pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127993A JPH07127993A (en) | 1995-05-19 |
| JP2935798B2 true JP2935798B2 (en) | 1999-08-16 |
Family
ID=17867738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5299064A Expired - Fee Related JP2935798B2 (en) | 1993-11-05 | 1993-11-05 | Corrosion protection management method for heat exchanger cooling pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2935798B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4873919B2 (en) * | 2005-10-07 | 2012-02-08 | 中国電力株式会社 | Iron ion implantation method and iron ion implantation amount control device |
-
1993
- 1993-11-05 JP JP5299064A patent/JP2935798B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07127993A (en) | 1995-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Narendran et al. | What is useful life for white light LEDs? | |
| CN101389895A (en) | Portable illumination device | |
| JP2935798B2 (en) | Corrosion protection management method for heat exchanger cooling pipes | |
| EP2154267A2 (en) | Apparatus for in-line testing of a chemical in a water containing system | |
| CN201611377U (en) | Service life test device of high-brightness light-emitting diode | |
| US4777567A (en) | Optical inspection apparatus | |
| CN205048200U (en) | A low pressure mercury lamp modular system that is used for ultraviolet lamp to detect and calibrate | |
| Petrinska et al. | Estimation of flicker of contemporary LED lamps and luminaires | |
| JP2010022899A (en) | Method for controlling concentration of water treatment agent in water, method for controlling concentration of water treatment agent in boiler water, and water treatment agent used in these control methods | |
| EP2270471A1 (en) | Monitoring and control of liquid additive | |
| RU2513046C2 (en) | Operating device and method of controlling operation of at least one low-pressure mercury discharge lamp | |
| CN102997992B (en) | Optical dosimeter | |
| Chen et al. | Testing of fluorescent lamps for its flickering susceptibility towards interharmonic voltages | |
| JP2002236120A (en) | Diagnostic method for rust stabilization | |
| GB2571405A (en) | Optical corrosion sensor | |
| Yang | Application Research on Illuminance Maintenance Method as a Substitute for Lumen Maintenance Method in LED Flat Panel Light | |
| Prihhapso et al. | Characterization of Spectroradiometric Based Luminous Flux Measurements for LED Luminaires at BRIN Indonesia | |
| Allash et al. | TESTING AND ANALYSIS OF CHARACTERISTICS OF LOW-PRESSURE MERCURY AND AMALGAM BACTERICIDAL UV LAMPS BY VARIOUS MANUFACTURERS. | |
| Huriev et al. | Method of Reproduction of the Luminous Flux of the LED Light Sources by a Spherical Photometer | |
| Koshti | Estimating temperature rise in pulsed thermography using irreversible temperature indicators | |
| JPH0979975A (en) | Managing method for corrosionproof film | |
| CN116854185A (en) | Ultraviolet light source control method and device of water purification system and driving power supply | |
| JP2004317450A (en) | Method for measuring flickering of lighting of railroad stock | |
| JPH0694627A (en) | Illuminating device of tv camera for inspection inside pipe | |
| JP2023035216A (en) | Refractive-index concentration sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090604 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100604 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110604 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110604 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120604 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120604 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130604 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |