JPH08114569A - Field measurement electrode device for corrosion potential of hot-water supply piping - Google Patents
Field measurement electrode device for corrosion potential of hot-water supply pipingInfo
- Publication number
- JPH08114569A JPH08114569A JP25232194A JP25232194A JPH08114569A JP H08114569 A JPH08114569 A JP H08114569A JP 25232194 A JP25232194 A JP 25232194A JP 25232194 A JP25232194 A JP 25232194A JP H08114569 A JPH08114569 A JP H08114569A
- Authority
- JP
- Japan
- Prior art keywords
- cheese
- water supply
- pipe
- hot water
- electrolytic solution
- 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.)
- Pending
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、給湯用配管の腐食電位
現場測定電極装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode device for in-situ corrosion potential measurement of hot water supply piping.
【０００２】[0002]
【従来の技術】かかる装置に関し、「防食技術」Ｖｏ
ｌ．３０、１１３，１９８１には、図２に示すような装
置が示されている。この装置は、ラボテストの様に耐久
性を必要とせず、万が一破損が生じたとしても他への影
響（損害等）が大きくない様な場合や、ガラス管先端の
詳細な位置決めが比較的容易に実施可能な場合に使用さ
れる。2. Description of the Related Art Regarding such a device, "corrosion prevention technology" Vo
l. At 30, 113, 1981, an apparatus as shown in FIG. 2 is shown. This device does not require durability like lab tests, and even if it should break, it does not have a large effect on other things (damage, etc.), and detailed positioning of the glass tube tip is relatively easy. Used when practicable.
【０００３】図２において、ポンプＰを備えた給湯用配
管１の途中には、テフロン製継手２、２を介して銅管製
の測定管３が介装されている。この測定管３の上部から
は、ガラス管４が挿入され、そのガラス管４の先端に
は、導電性多孔質のプラグ５が設けられ、上端には、電
解液ポット６が形成されている。このポット６の中の電
解液（例えば塩化カリウム飽和水溶液）７には、例えば
銀−塩化銀の照合電極８が挿入され、その照合電極８
は、レコーダ９を備えた電気回路Ｌ１により測定管３の
プラグ５に対向する部分に接続されている。In FIG. 2, a hot water supply pipe 1 provided with a pump P is provided with a measuring pipe 3 made of a copper pipe in the middle of a joint 2 made of Teflon. A glass tube 4 is inserted from the upper part of the measuring tube 3, a conductive porous plug 5 is provided at the tip of the glass tube 4, and an electrolytic solution pot 6 is formed at the upper end. A verification electrode 8 of, for example, silver-silver chloride is inserted into the electrolytic solution (for example, saturated aqueous solution of potassium chloride) 7 in the pot 6, and the verification electrode 8 is inserted.
Is connected to a portion of the measuring tube 3 facing the plug 5 by an electric circuit L1 including a recorder 9.
【０００４】このように構成され測定に際し、ポンプＰ
により温湯を所定速度で測定管３を通過させることによ
って、照合電極８と測定管３の電位差（腐食電位）を電
気回路Ｌ１により測定し、その腐食電位により測定管３
の腐食度を判定する。The pump P having the above-mentioned structure is used for the measurement.
By passing hot water through the measuring tube 3 at a predetermined speed, the potential difference (corrosion potential) between the reference electrode 8 and the measuring tube 3 is measured by the electric circuit L1, and the measuring tube 3 is measured by the corrosion potential.
Determine the degree of corrosion of.
【０００５】しかし、現場で使用する場合には、ガラス
管４を測定管３内の所定位置に挿入するのは、極めて困
難で、かつ、折れ易く取扱いが面倒である。However, when it is used in the field, it is extremely difficult to insert the glass tube 4 into a predetermined position in the measuring tube 3, and it is easy to break and is troublesome to handle.
【０００６】これに対し、「防食技術」Ｖｏｌ．３６，
４９２，１９８７には、現場で使用する場合として、図
３に示すような装置が示されている。On the other hand, "corrosion prevention technology" Vol. 36,
492,1987 shows a device as shown in FIG. 3 for use in the field.
【０００７】図３において、給湯用配管１の途中には、
通常「チーズ」と称されるＴ型のジョイント（本明細書
においても「チーズ」と表現する）１０が介装され、そ
のチーズ１０の配管１に直交する側からは、テフロンホ
ルダ１１に埋設された銀１２ａ、塩化銀１２ｂの照合電
極１２が温湯Ｗに接する所定位置Ｓまで挿入されてい
る。そして、照合電極１２はボルトメータＶを備えた電
気回路Ｌ２により配管１に接続されている。In FIG. 3, in the middle of the hot water supply pipe 1,
A T-shaped joint (also referred to as “cheese” in the present specification) 10 which is usually called “cheese” is interposed, and the cheese 10 is embedded in a Teflon holder 11 from a side orthogonal to the pipe 1. The reference electrodes 12 of silver 12a and silver chloride 12b are inserted up to a predetermined position S in contact with the hot water W. The reference electrode 12 is connected to the pipe 1 by an electric circuit L2 having a voltmeter V.
【０００８】この装置において照合電極１２は、チーズ
１０の長さに合わせてその長さを決めており、チーズ１
０の所定位置Ｓに固定され、さらにガラス管を使用して
いないために、上述した「現場で使用する場合には、ガ
ラス管を測定管内の所定位置に挿入するのは、極めて困
難で且つ折れ易く、取扱いが面倒である」という問題が
存在しない。しかし、次の様な問題を有している。 （１） 電解液を用いていないので、従来の塩化カリウ
ム−銀・塩化銀反応系のデータが使用できない。そのた
め、現場測定後に実験室にて電解液中で測定し基準電位
の補正が必要である。 （２） 照合電極１２をテフロンホルダ１１に埋設して
いるので、加工コストが高い。 （３） 照合電極１２は流れる温湯中に漬っているの
で、消耗してしまい、耐久性が劣る。In this apparatus, the reference electrode 12 has its length determined according to the length of the cheese 10.
Since it is fixed at the predetermined position S of 0 and the glass tube is not used, it is extremely difficult and fragile to insert the glass tube into the predetermined position in the measuring tube when it is used in the above-mentioned case. It is easy and difficult to handle. " However, it has the following problems. (1) Since no electrolytic solution is used, conventional data on potassium chloride-silver / silver chloride reaction system cannot be used. Therefore, it is necessary to correct the reference potential by measuring in the electrolytic solution in the laboratory after the field measurement. (2) Since the verification electrode 12 is embedded in the Teflon holder 11, the processing cost is high. (3) Since the reference electrode 12 is immersed in flowing hot water, it is consumed and the durability is poor.
【０００９】[0009]
【発明が解決しようとする課題】本発明は上記した問題
に鑑みて提案されたもので、破損のおそれが無く、取付
けが容易で、基準電位の補正が不必要であり、しかも加
工性、耐久性、信頼性の高い給湯用配管の腐食電位現場
測定装置の提供を目的としている。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and there is no fear of damage, easy installation, no need for correction of reference potential, workability and durability. The purpose of the present invention is to provide an on-site apparatus for measuring corrosion potential of hot water supply pipes with high reliability and reliability.
【００１０】[0010]
【課題を解決するための手段】本発明の給湯用配管の腐
食電位現場測定装置は、給湯用配管に介装されたチーズ
と、該チーズの前記配管に直交する側から絶縁されて挿
入され且つその先端が所定位置に位置する様な長さに設
定された金属管と、該金属管の頂部に設けられた導電性
多孔質プラグと、前記金属管に連通された電解液ポット
と、該電解液ポットの電解液中に挿入された照合電極
と、該照合電極と前記チーズの前記配管側とを接続する
電圧計を備えた電気回路とを設けている。Means for Solving the Problems A hot water supply pipe corrosion potential field measuring apparatus according to the present invention is a cheese interposed in a hot water supply pipe, and is inserted while being insulated from a side orthogonal to the cheese pipe. A metal tube whose length is set so that its tip is located at a predetermined position, a conductive porous plug provided on the top of the metal tube, an electrolytic solution pot communicated with the metal tube, and the electrolysis A verification electrode inserted into the electrolytic solution of the liquid pot and an electric circuit equipped with a voltmeter connecting the verification electrode and the cheese side of the pipe are provided.
【００１１】上記金属管は、テフロン材を介してチーズ
に螺合するねじプラグに固定するのが好ましい。It is preferable that the metal tube is fixed to a screw plug screwed to the cheese via a Teflon material.
【００１２】[0012]
【作用】上記の様に構成された本発明の給湯用配管の腐
食電位現場測定装置によれば、温湯と液絡する電解液中
の照合電極により腐食電位を測定している。したがっ
て、照合電極は消耗のおそれがなく、耐久性、信頼性が
向上される。According to the apparatus for measuring the corrosion potential of the hot water supply pipe of the present invention configured as described above, the corrosion potential is measured by the reference electrode in the electrolytic solution which is in a liquid junction with the hot water. Therefore, the reference electrode is not worn out, and the durability and reliability are improved.
【００１３】また、従来と同様な照合電極及び電解液が
使用でき、安価であり、かつ、基準電位の補正が不必要
である。Further, the same reference electrode and electrolytic solution as the conventional one can be used, the cost is low, and the correction of the reference potential is unnecessary.
【００１４】さらに、金属管の破損のおそれがなく、取
扱いが容易である。Furthermore, there is no risk of damage to the metal tube, and handling is easy.
【００１５】[0015]
【実施例】以下図面を参照して本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１において、給湯用配管１の途中には、
チーズ２０が介装されている。そのチーズ２０の配管１
に対向する側には、ねじプラグ２１が螺合されている。In FIG. 1, in the middle of the hot water supply pipe 1,
The cheese 20 is interposed. The cheese 20 piping 1
A screw plug 21 is screwed on the side opposite to.
【００１７】このねじプラグ２１には、絶縁材である例
えばテフロンホルダ２２を介して金属管２３が設けら
れ、その金属管２３の外周は絶縁材２４で覆われてい
る。そして、金属管２３の頂部には、導電性多孔性のプ
ラグ５が設けられ、温湯Ｗに接する所定位置Ｓと、チー
ズ管壁からの所定間隔Ｄの位置に位置決めされている。The screw plug 21 is provided with a metal tube 23 via an insulating material such as a Teflon holder 22, and the outer circumference of the metal tube 23 is covered with an insulating material 24. A conductive porous plug 5 is provided on the top of the metal tube 23, and is positioned at a predetermined position S in contact with the hot water W and at a predetermined distance D from the cheese pipe wall.
【００１８】他方、金属管２３は、連通管２５により電
解液ポット６に連通されている。その電解液ポット６の
電解液（例えば、従来と同様な塩化カリウム飽和水溶
液）７には、照合電極（例えば、従来と同じ銀−塩化銀
電極）８が挿入され、この照合電極８は、ボルトメータ
Ｖを備えた電気回路Ｌによりチーズ２０の配管１側に接
続されている。On the other hand, the metal tube 23 is connected to the electrolytic solution pot 6 by a communication tube 25. A reference electrode (for example, the same silver-silver chloride electrode as the conventional one) 8 is inserted into an electrolytic solution (for example, a saturated aqueous solution of potassium chloride) 7 in the electrolytic solution pot 6, and the reference electrode 8 is a bolt. The cheese 20 is connected to the pipe 1 side of the cheese 20 by an electric circuit L equipped with a meter V.
【００１９】このように構成され、温湯Ｗを所定速度で
チーズ２０内を通過させると共に、照合電極８と給湯用
配管１の電位差（腐食電位）を電気回路Ｌにより測定
し、その腐食電位により給湯用配管１の腐食度を判定す
る。With this structure, the hot water W is passed through the cheese 20 at a predetermined speed, the potential difference (corrosion potential) between the reference electrode 8 and the hot water supply pipe 1 is measured by the electric circuit L, and hot water is supplied by the corrosion potential. Determining the degree of corrosion of the service pipe 1.
【００２０】[0020]
【発明の効果】本発明は、以上説明した様に構成されて
いるので、以下に列挙する様な作用効果を奏する。 （１） 金属管をチーズ内に挿入するので、破損のおそ
れがなく、取扱いが容易である。 （２） 電解液中での基準電位の補正が不必要である。 （３） 市販の銀−塩化銀照合電極が使用でき、かつ、
温湯中には直接さらさないので、耐久性があり、得られ
るデータも信頼性がある。 （４） 給湯用配管の径に合わせた大きさの装置を製作
することにより、現場での取付けが容易である。Since the present invention is configured as described above, it has the following operational effects. (1) Since the metal tube is inserted into the cheese, there is no risk of damage and the handling is easy. (2) It is unnecessary to correct the reference potential in the electrolytic solution. (3) A commercially available silver-silver chloride reference electrode can be used, and
Since it is not directly exposed to hot water, it is durable and the data obtained is reliable. (4) By manufacturing a device having a size corresponding to the diameter of the hot water supply pipe, it can be easily installed on site.
【図１】本発明の一実施例を示す全体構成図。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
【図２】従来装置の一例を示す全体構成図。FIG. 2 is an overall configuration diagram showing an example of a conventional device.
【図３】従来装置の別の例を示す全体構成図。FIG. 3 is an overall configuration diagram showing another example of a conventional device.
Ｄ・・・所定間隔 Ｓ・・・所定位置 Ｗ・・・温湯 １・・・給湯用配管 ２・・・テフロン製継手 ３・・・測定管 ５・・・プラグ ６・・・電解液ポット ７・・・電解液 ８、１２・・・照合電極 ９・・・レコーダ １０、２０・・・チーズ（Ｔ型のジョイント） １１、２２・・・テフロンホルダ ２１・・・ねじプラグ ２３・・・金属管 ２４・・・絶縁材 ２５・・・連通管 D ... Predetermined interval S ... Predetermined position W ... Hot water 1 ... Hot water supply pipe 2 ... Teflon joint 3 ... Measuring pipe 5 ... Plug 6 ... Electrolyte pot 7 ... Electrolyte solution 8, 12 ... Reference electrode 9 ... Recorder 10, 20 ... Cheese (T type joint) 11, 22 ... Teflon holder 21 ... Screw plug 23 ... Metal Pipe 24 ... Insulation 25 ... Communication pipe
Claims (1)
ーズの前記配管に直交する側から絶縁されて挿入され且
つその先端が所定位置に位置する様な長さに設定された
金属管と、該金属管の頂部に設けられた導電性多孔質プ
ラグと、前記金属管に連通された電解液ポットと、該電
解液ポットの電解液中に挿入された照合電極と、該照合
電極と前記チーズの前記配管側とを接続する電圧計を備
えた電気回路とを設けたことを特徴とする給湯用配管の
腐食電位現場測定電極装置。1. A cheese interposed in a hot water supply pipe, and a metal pipe insulated and inserted from a side of the cheese orthogonal to the pipe and having a length such that a tip of the cheese is located at a predetermined position. A conductive porous plug provided on the top of the metal tube, an electrolytic solution pot connected to the metal tube, a verification electrode inserted in the electrolytic solution of the electrolytic solution pot, and the verification electrode. An electric circuit equipped with a voltmeter for connecting the cheese to the piping side is provided, and a corrosion potential field measuring electrode device for hot water supply piping is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25232194A JPH08114569A (en) | 1994-10-18 | 1994-10-18 | Field measurement electrode device for corrosion potential of hot-water supply piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25232194A JPH08114569A (en) | 1994-10-18 | 1994-10-18 | Field measurement electrode device for corrosion potential of hot-water supply piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08114569A true JPH08114569A (en) | 1996-05-07 |
Family
ID=17235637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25232194A Pending JPH08114569A (en) | 1994-10-18 | 1994-10-18 | Field measurement electrode device for corrosion potential of hot-water supply piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08114569A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001174397A (en) * | 1999-12-17 | 2001-06-29 | Toshiba Corp | Corrosion potential measuring device |
| KR100955629B1 (en) * | 2009-08-05 | 2010-05-03 | 한진도시가스 (주) | Standard electrode subsidiary apparatus |
| JP2012132696A (en) * | 2010-12-20 | 2012-07-12 | Hitachi-Ge Nuclear Energy Ltd | Corrosion potential sensor and corrosion potential sensor installing structure |
| CN103234894A (en) * | 2013-04-03 | 2013-08-07 | 中国石油大学(华东) | Multiphase flow erosion local corrosion testing apparatus |
| KR200474756Y1 (en) * | 2012-08-23 | 2014-10-13 | 주식회사 한국가스기술공사 | water supply for base electrode structure |
| CN108982186A (en) * | 2018-09-06 | 2018-12-11 | 邢振华 | A kind of alloy and detection method for tubular steam boiler water quality detection |
| KR20210085868A (en) * | 2019-12-31 | 2021-07-08 | 한국수력원자력 주식회사 | Apparatus installed on lower part of pipe for measuring sensitization of alloy and method for measuring sensitization of alloy using the same |
-
1994
- 1994-10-18 JP JP25232194A patent/JPH08114569A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001174397A (en) * | 1999-12-17 | 2001-06-29 | Toshiba Corp | Corrosion potential measuring device |
| KR100955629B1 (en) * | 2009-08-05 | 2010-05-03 | 한진도시가스 (주) | Standard electrode subsidiary apparatus |
| JP2012132696A (en) * | 2010-12-20 | 2012-07-12 | Hitachi-Ge Nuclear Energy Ltd | Corrosion potential sensor and corrosion potential sensor installing structure |
| KR200474756Y1 (en) * | 2012-08-23 | 2014-10-13 | 주식회사 한국가스기술공사 | water supply for base electrode structure |
| CN103234894A (en) * | 2013-04-03 | 2013-08-07 | 中国石油大学(华东) | Multiphase flow erosion local corrosion testing apparatus |
| CN108982186A (en) * | 2018-09-06 | 2018-12-11 | 邢振华 | A kind of alloy and detection method for tubular steam boiler water quality detection |
| KR20210085868A (en) * | 2019-12-31 | 2021-07-08 | 한국수력원자력 주식회사 | Apparatus installed on lower part of pipe for measuring sensitization of alloy and method for measuring sensitization of alloy using the same |
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