JPH05264497A - Corrosion testing device - Google Patents
Corrosion testing deviceInfo
- Publication number
- JPH05264497A JPH05264497A JP6474292A JP6474292A JPH05264497A JP H05264497 A JPH05264497 A JP H05264497A JP 6474292 A JP6474292 A JP 6474292A JP 6474292 A JP6474292 A JP 6474292A JP H05264497 A JPH05264497 A JP H05264497A
- Authority
- JP
- Japan
- Prior art keywords
- test
- water
- corrosion
- tank
- piping
- 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.)
- Granted
Links
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は水中での金属部材の腐食
反応の進行を測定するための腐食試験装置に関する。特
に、本発明は微生物要因の影響を受けた腐食進行状況を
比較的小規模な構成にて測定できる腐食試験装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrosion test apparatus for measuring the progress of a corrosion reaction of a metal member in water. In particular, the present invention relates to a corrosion test apparatus capable of measuring the progress of corrosion affected by microbial factors with a relatively small scale configuration.
【0002】[0002]
【従来の技術】水中での微生物要因の影響を受けた金属
の腐食を測定する装置として、試験水槽(100リット
ル)にテストピースを浸漬し、液を循環させて腐食電位
(電流)を測定するようにした腐食試験装置が用いられ
る。2. Description of the Related Art As a device for measuring the corrosion of metals affected by microbial factors in water, a test piece is immersed in a test water tank (100 liters) and a liquid is circulated to measure the corrosion potential (current). Corrosion test equipment is used.
【0003】別の腐食試験装置として、1リットルのビ
ーカに試験水を採取し供試テストピースを浸し腐食電位
(電流)を測定する簡易試験装置がある。As another corrosion test apparatus, there is a simple test apparatus in which test water is sampled in a 1 liter beaker and a test piece to be tested is immersed therein to measure the corrosion potential (current).
【0004】[0004]
【発明が解決しようとする課題】前者の100リットル
容の試験槽を用いた装置は、規模が大きく、設備コスト
がかさむと共に、試験水を多量に必要とするため、採
水、運搬に多大な労力を要するという問題がある。The former apparatus using a 100-liter test tank is large in scale, requires a large equipment cost, and requires a large amount of test water. There is a problem that it requires labor.
【0005】1リットル容のビーカを用いた後者の腐食
試験装置によれば加温,撹拌はできるが微生物要因の腐
食への影響を充分に電位(電流)変化に反映できないと
いう問題がある。The latter corrosion tester using a 1 liter beaker can heat and stir, but has a problem that the influence of microbial factors on corrosion cannot be sufficiently reflected in the change in potential (current).
【0006】即ち、 テストピース面に対して供試水中の微生物量が少な
い、 増殖に必要な栄養源の補給がない、 回分テストのため微生物相を定常状態に維持できな
い。That is, the amount of microorganisms in the test water is small with respect to the surface of the test piece, the nutrient source necessary for growth is not supplied, and the microflora cannot be maintained in a steady state due to the batch test.
【0007】等の欠点がある。There are drawbacks such as
【0008】このような問題点に対処すべく、予め分離
培養した微生物を人為的にテストピース面に塗着するこ
とや、金属を蒸着した水晶発振子を用いて付着微生物量
を高感度で計測することも試みられているが、実用上問
題が残る。In order to deal with such a problem, the microorganisms that have been separated and cultured in advance are artificially applied to the surface of the test piece, or the amount of attached microorganisms is measured with high sensitivity by using a crystal oscillator on which metal is vapor-deposited. Although it has been attempted to do so, there remains a problem in practical use.
【0009】本発明は、上記従来の問題点を解決し、金
属腐食が問題となる現場又は試験室内、研究室内で水中
での腐食反応の進行を再現するための微生物要因の影響
を考慮した比較的小規模の模擬試験装置を提供すること
を目的とする。The present invention solves the above conventional problems and considers the influence of microbial factors for reproducing the progress of corrosion reaction in water in the field, in a test room, or a laboratory where metal corrosion becomes a problem. The purpose is to provide a small-scale simulation test device.
【0010】[0010]
【課題を解決するための手段】本発明の腐食試験装置
は、排水手段付き試験槽と、該排水手段付き試験槽へ試
験水を供給する試験水供給手段と、該排水手段付き試験
槽へ酸素を補給する酸素補給手段と、該排水手段付き試
験槽内の試験水の微生物要因を加味した腐食傾向を測定
する電気化学的腐食測定手段と、該測定手段の信号を受
けてそれを表示する表示手段とから成るものである。The corrosion test apparatus of the present invention comprises a test tank with drainage means, a test water supply means for supplying test water to the test tank with drainage means, and oxygen for the test tank with drainage means. Means for replenishing oxygen, electrochemical corrosion measuring means for measuring the corrosion tendency of the test water in the test tank with the draining means in consideration of microbial factors, and a display for displaying it upon receiving a signal from the measuring means It consists of means and means.
【0011】本発明において、上記の試験槽としては、
例えば1〜2リットル容程度のビーカを用いることがで
きる。In the present invention, as the above test tank,
For example, a beaker having a volume of 1 to 2 liters can be used.
【0012】この試験槽に設けられる排水手段として
は、例えば試験槽の水面に排水口を設け、添加された
分、自動的に排水させるようにしたものであってもよい
し、排水用ポンプであっても良い。As the drainage means provided in this test tank, for example, a drainage port may be provided on the water surface of the test tank so as to automatically drain the added amount. It may be.
【0013】なお、この排水手段は、試験槽内の水位を
一定に保つことができるものであることが、微生物の影
響を正しく見られるので好ましい。It is preferable that the drainage means be capable of keeping the water level in the test tank constant, since the influence of microorganisms can be seen correctly.
【0014】酸素補給手段としては、例えば散気装置を
好適に用いることができる。As the oxygen supply means, for example, an air diffuser can be preferably used.
【0015】表示手段としては、液晶パネルやブラウン
管を用いたモニタに映し出すようにしたものが好適であ
るが、アナログ型電位差計のメータ部分をそのまま見ら
れるようにしたものであってもよい。As the display means, it is preferable to display it on a monitor using a liquid crystal panel or a cathode ray tube, but it is also possible to display the meter part of the analog potentiometer as it is.
【0016】電気化学的腐食測定手段としては、被試験
片(テストピース)と比較電極とを試験水内に浸漬配置
し、それらの間の電位差又は両者間を流れる電流を検出
するようにしたものが好適である。なお、この比較電極
としては、銀−塩化銀電極のほか、SUS、Pt、Au
などの金属電極やC(炭素)電極などを用いることがで
きる。As the electrochemical corrosion measuring means, a test piece and a reference electrode are immersed in test water and a potential difference between them or a current flowing between them is detected. Is preferred. As the reference electrode, in addition to a silver-silver chloride electrode, SUS, Pt, Au
It is possible to use a metal electrode such as, a C (carbon) electrode, or the like.
【0017】このテストピースは、試験目的により新品
又はすでに微生物の付着したピースが使用される。As the test piece, a new piece or a piece to which microorganisms are already attached is used depending on the purpose of the test.
【0018】微生物要因による腐食への影響を加味させ
るために、試験槽内には、すでに微生物の付着した固体
(テストピース等)を浸漬するか、又はこれから分離し
た菌を初期投入することが好ましい。In order to take into account the influence of microbial factors on corrosion, it is preferable to immerse a solid (test piece or the like) to which microorganisms have already adhered in the test tank, or to initially inject a bacterium separated therefrom. ..
【0019】[0019]
【作用】本発明の腐食試験装置では、金属部材片(テス
トピース)の腐食を例えば次のようにして測定する。In the corrosion test apparatus of the present invention, the corrosion of the metal member piece (test piece) is measured, for example, as follows.
【0020】小容量(1〜2リットル)の定温に保持し
た試験槽に供試水を給水し同量排出する。槽内には、テ
ストピース、比較電極を浸漬し両者間の電位又は電流の
経時変化を測定する。The test water is supplied to a small-capacity (1-2 liter) test tank kept at a constant temperature and the same amount is discharged. The test piece and the reference electrode are immersed in the bath, and the change over time in the potential or current between them is measured.
【0021】このようにテストピースを試験槽内の供試
水中に浸漬しておくと、テストピース上への菌の移行、
増殖が自然に生じるため、微生物付着に起因する電位変
化(局部腐食の前段階としての電位上昇)が再現でき
る。When the test piece is immersed in the test water in the test tank as described above, the migration of the bacteria on the test piece,
Since the proliferation naturally occurs, the potential change (potential increase as a pre-stage of local corrosion) due to the adhesion of microorganisms can be reproduced.
【0022】金属表面では酸化皮膜の生成、破壊、修復
の3工程が時間的、空間的に並行して進行している。各
反応は電気化学的反応を伴ない、電位、電流変化から腐
食状況が推測できる。On the metal surface, three steps of forming, destroying, and repairing an oxide film proceed temporally and spatially in parallel. Each reaction involves an electrochemical reaction, and the corrosion status can be inferred from changes in potential and current.
【0023】[0023]
【実施例】以下、図面を参照して実施例について説明す
る。第1図は実施例装置の構成を示す正面内部構成図、
第2図は正面図である。EXAMPLES Examples will be described below with reference to the drawings. FIG. 1 is a front internal configuration diagram showing the configuration of the embodiment apparatus,
FIG. 2 is a front view.
【0024】直方体形状のケーシング10内が棚板1
2、14により3段に仕切られ、中段に試験槽16が設
置されている。なお、第1図にはこの試験槽16は2個
のみ示されているが、1個又は3個以上であっても良
い。この試験槽16の側面にはオーバーフロー水排水口
18が設けられ、オーバーフロー水がケーシング10内
の下段に配設された排水受皿20上に受容される。The inside of the rectangular casing 10 is the shelf board 1.
The test tank 16 is divided into two stages by 2 and 14, and the test tank 16 is installed in the middle stage. Although only two test tanks 16 are shown in FIG. 1, the number of test tanks 16 may be one or three or more. An overflow water drainage port 18 is provided on the side surface of the test tank 16, and overflow water is received on a drainage tray 20 arranged in the lower stage of the casing 10.
【0025】ケーシング10内の上段には給水ポンプ2
2、空気ポンプ24、スキャナ26、電位差計28、コ
ンピュータ(パソコン)30が設置されており、該パソ
コン30の画面30aはケーシング10外から目視可能
となっている。第1図の32は室内殺菌灯であり、34
はタイマである。このタイマ34は、間欠的(例えば6
時間ON、30分OFFなど)にポンプ22、24を作
動させるときに用いられる。第1図の34は覗き窓であ
る。A water supply pump 2 is provided in the upper stage of the casing 10.
2, an air pump 24, a scanner 26, a potentiometer 28, and a computer (personal computer) 30 are installed, and a screen 30a of the personal computer 30 is visible from the outside of the casing 10. 32 in FIG. 1 is an indoor germicidal lamp, and 34
Is a timer. This timer 34 is intermittent (for example, 6
It is used when the pumps 22 and 24 are operated for time ON, 30 minutes OFF, etc.). Reference numeral 34 in FIG. 1 is a viewing window.
【0026】ケーシング10の側方に設置された試験水
容器36内の水は、配管38、前記給水ポンプ22、配
管40を介して試験槽16内に供給される。空気ポンプ
24からの空気は、配管42を介して試験槽16内の散
気筒44へ供給される。The water in the test water container 36 installed on the side of the casing 10 is supplied into the test tank 16 through the pipe 38, the water supply pump 22 and the pipe 40. The air from the air pump 24 is supplied to the scattering cylinders 44 in the test tank 16 via the pipes 42.
【0027】試験槽16内には試料電極(テストピー
ス)46と比較電極48とが浸漬配置されており、これ
らの間に生じる電位差がスキャナ26を介して電位差計
28で検出され、パソコン30に送られる。A sample electrode (test piece) 46 and a reference electrode 48 are immersed in the test tank 16, and a potential difference generated between them is detected by a potentiometer 28 via a scanner 26, and a personal computer 30 is detected. Sent.
【0028】スキャナ26は、複数個の試験槽からの信
号を順次に選択して電位差計28に送るためのものであ
り、パソコン30においては各試験槽16毎にデータを
集積し、試験槽16毎の電位差の経時(例えば経日)変
化をグラフとして画面30aに表示する。The scanner 26 is for sequentially selecting signals from a plurality of test tanks and sending them to the potentiometer 28. In the personal computer 30, data is accumulated for each test tank 16 and the test tank 16 is used. The changes over time (for example, days) of the potential difference for each time are displayed as a graph on the screen 30a.
【0029】なお、ケーシング内の下部には、各種のス
イッチ類やケーシング10内の温調機器が設置されてい
る。Various switches and temperature control equipment in the casing 10 are installed in the lower portion of the casing.
【0030】この実施例装置は、従来の100リットル
容の試験槽を用いた装置や、1リットル程度のビーカテ
ストに比べ、次のような優れた特徴を有する。The apparatus of this embodiment has the following excellent characteristics as compared with the conventional apparatus using a test tank of 100 liter capacity and the beaker test of about 1 liter.
【0031】試験水の採水、運搬に要する労力、費用
等が100リットル槽の場合に比較して約1/5にな
る。なお、本実施例の1リットルの試験槽において試験
水を0.5リットル/日の割合で交換するとしても、1
ケ月の試験に要する水量は15リットルで充分である。The labor, cost, etc. required for collecting and transporting the test water is about 1/5 of that in the case of the 100-liter tank. Even if the test water is exchanged at a rate of 0.5 liter / day in the 1 liter test tank of the present embodiment, it is 1
A water volume of 15 liters is sufficient for the test of the month.
【0032】試験に必要な敷地は100リットル槽の
場合に比べ1/100で充分。例えば、巾800、奥行
832、高さ1810mmのケーシングを用いた場合、
1リットル水槽を30個設置することは可能。100リ
ットル槽の場合、1槽当り3m2 近い敷地が必要とな
る。The site required for the test is 1/100 that of the 100 liter tank. For example, if a casing with a width of 800, a depth of 832, and a height of 1810 mm is used,
It is possible to install 30 1-liter water tanks. In the case of a 100-liter tank, a site of about 3 m 2 is required for each tank.
【0033】微生物の補給、滞留、通気によるDO補
給、槽内混合、栄養源としての補給水、温調を行なうた
め、生物要因による電位、電流変化が再現できる。これ
に対し、単なる1リットル容のテストでは腐食の進行に
伴なう電位、電流の増減が再現できないことが多い。Since the microorganisms are replenished, accumulated, DO is replenished by aeration, mixed in the tank, water is replenished as a nutrient source, and the temperature is controlled, the potential and current changes due to biological factors can be reproduced. On the other hand, a simple 1 liter test often cannot reproduce the increase and decrease in electric potential and current accompanying the progress of corrosion.
【0034】[0034]
【発明の効果】以上の通り、本発明の腐食試験装置は、
次のような優れた効果を有する。As described above, the corrosion test apparatus of the present invention is
It has the following excellent effects.
【0035】試験水の使用量が少なくて良いため、採
水、運搬の労力、費用が小さい。Since the test water can be used in a small amount, labor and cost for water sampling and transportation are small.
【0036】装置構成がコンパクトであり、設置面積
が小さい。The device structure is compact and the installation area is small.
【0037】微生物要因による腐食を加味した腐食を
測定できる。It is possible to measure corrosion in consideration of corrosion due to microbial factors.
【図1】実施例装置の内部正面図である。FIG. 1 is an internal front view of an apparatus according to an embodiment.
【図2】実施例装置の外部正面図である。FIG. 2 is an external front view of the apparatus according to the embodiment.
10 ケーシング 16 試験槽 20 排水受皿 22 給水ポンプ 24 空気ポンプ 26 スキャナ 28 電位差計 30 コンピュータ 36 試験水容器 46 試料電極 48 比較電極 10 Casing 16 Test Tank 20 Drain Drain 22 Water Supply Pump 24 Air Pump 26 Scanner 28 Potentiometer 30 Computer 36 Test Water Container 46 Sample Electrode 48 Reference Electrode
Claims (1)
段と、 該排水手段付き試験槽へ酸素を補給する酸素補給手段
と、 該排水手段付き試験槽内の試験水の微生物要因を加味し
た腐食傾向を測定する電気化学的腐食測定手段と、 該測定手段の信号を受けてそれを表示する表示手段とか
ら成る腐食試験装置。1. A test tank with drainage means, a test water supply means for supplying test water to the test tank with drainage means, an oxygen supply means for supplying oxygen to the test tank with drainage means, and a drainage means A corrosion test apparatus comprising: an electrochemical corrosion measuring means for measuring a corrosion tendency of a test water in a test tank in consideration of a microbial factor; and a display means for receiving a signal from the measuring means and displaying the signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06474292A JP3175270B2 (en) | 1992-03-23 | 1992-03-23 | Corrosion test equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06474292A JP3175270B2 (en) | 1992-03-23 | 1992-03-23 | Corrosion test equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05264497A true JPH05264497A (en) | 1993-10-12 |
JP3175270B2 JP3175270B2 (en) | 2001-06-11 |
Family
ID=13266916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP06474292A Expired - Fee Related JP3175270B2 (en) | 1992-03-23 | 1992-03-23 | Corrosion test equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3175270B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103792182A (en) * | 2014-02-26 | 2014-05-14 | 中国石油大学(华东) | Double-electrolytic tank for simulating under-deposit corrosion and application |
-
1992
- 1992-03-23 JP JP06474292A patent/JP3175270B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103792182A (en) * | 2014-02-26 | 2014-05-14 | 中国石油大学(华东) | Double-electrolytic tank for simulating under-deposit corrosion and application |
Also Published As
Publication number | Publication date |
---|---|
JP3175270B2 (en) | 2001-06-11 |
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