JPS6251417B2 - - Google Patents
Info
- Publication number
- JPS6251417B2 JPS6251417B2 JP55008756A JP875680A JPS6251417B2 JP S6251417 B2 JPS6251417 B2 JP S6251417B2 JP 55008756 A JP55008756 A JP 55008756A JP 875680 A JP875680 A JP 875680A JP S6251417 B2 JPS6251417 B2 JP S6251417B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- container
- detection
- detection unit
- concentration meter
- 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
Links
- 239000010802 sludge Substances 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000005868 electrolysis reaction Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【発明の詳細な説明】
本発明は、濃度計に係り、特に電気分解を利用
して測定部への付着物の付着を防止した汚泥濃度
計に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a densitometer, and more particularly to a sludge densitometer that utilizes electrolysis to prevent deposits from adhering to a measuring section.
光源から被測定液を透過して受光素子に受光さ
れた光量により被測定液の濃度を測定する濃度計
には、第１図に示すように、検出部１が先端部に
設けられたパイプからなるプローブ部２を被測定
液５に挿入して被測定液槽４に固定し、プローブ
部２の上端に本体部３を設けた設置式や、第２図
に示すように、被測定液槽４に設置した本体部３
と検出部１１とをケーブル６で接続し、検出部１
１を被測定液槽４の底に置いた投げ込式などがあ
る。 As shown in Figure 1, a densitometer that measures the concentration of a liquid to be measured based on the amount of light that passes through the liquid from a light source and is received by a light-receiving element has a detection unit 1 connected to a pipe provided at the tip. The probe part 2 is inserted into the liquid to be measured 5 and fixed to the liquid to be measured tank 4, and the main body part 3 is provided on the upper end of the probe part 2. Main unit 3 installed in 4
and the detection unit 11 are connected with the cable 6, and the detection unit 1
1 is placed at the bottom of the liquid tank 4 to be measured.
いずれの方式においても検出部の光路における
汚れが問題となつており、従来から定期的に人手
によりブラシ等で洗浄したり、検出部のシリンダ
に被測定液を吸引するピストンを兼ねたワイパを
内蔵させ自動洗浄するようにしたりしていたが、
これらの洗浄方法は本質的なものではなく、前者
は検出部を引揚げて洗浄を行なわねばならず保守
の手間および保守時の長時間の測定の中断の問題
があり、また、後者では、汚れの洗浄を行なつて
も完全を期し難く、次第に汚れが蓄積してワイパ
がつまるなどの問題が発生していた。 In both methods, dirt in the optical path of the detection part is a problem, and conventionally it has been necessary to periodically clean it manually with a brush, etc., or to have a built-in wiper that doubles as a piston to suck the liquid to be measured into the cylinder of the detection part. However, the
These cleaning methods are not essential; the former requires the detection unit to be lifted up and cleaned, resulting in troublesome maintenance and long interruptions in measurement during maintenance; Even after repeated cleaning, it was difficult to ensure complete cleaning, and dirt gradually accumulated, causing problems such as the wiper becoming clogged.
本発明は上記のような問題を解消できる汚泥濃
度計を提供することを目的とする。このため本発
明では、被測定汚泥液に接続する透明な絶縁材料
製の検出部容器の突出部に収納され被測定汚泥液
を挾んで対向配設された光源および受光素子を具
え、この光源から被測定汚泥液を透過して受光素
子に受光された光量により被測定汚泥液の濃度を
測定する汚泥濃度計において、前記検出部容器に
導電性を持たせて一方の電極とすると共にこの検
出部容器を保持する導電性の支持部材を他方の電
極とし、これら両電極間に直流電流を流して電気
分解を行ない電気分解生成物により検出部容器へ
の汚泥の付着を防止するようにして所期の目的を
達成した。 An object of the present invention is to provide a sludge concentration meter that can solve the above problems. For this reason, the present invention includes a light source and a light-receiving element that are housed in the protruding part of the detection container made of a transparent insulating material and connected to the sludge to be measured, and are disposed opposite to each other with the sludge to be measured between them. In a sludge concentration meter that measures the concentration of a sludge liquid to be measured based on the amount of light transmitted through the sludge liquid to be measured and received by a light receiving element, the detection part container is made conductive to serve as one electrode, and the detection part The conductive support member that holds the container is used as the other electrode, and a direct current is passed between these two electrodes to perform electrolysis and prevent sludge from adhering to the detection container due to the electrolysis product. achieved its purpose.
以下、本発明の実施例を図面を参照して説明す
る。第３図は本発明による汚泥濃度計の一実施例
を示す断面図である。第３図において、２１およ
び２２は例えばガラスやプラスチツクなどの透明
な絶縁材料製の検出部容器で、絶縁物２３を介し
て金属パイプなどの導電性の支持部材２４に保持
されている。２５は光源、２６は受光素子でそれ
ぞれ検出部容器２１および２２内に配置されてい
る。検出部容器２１および２２の外表面には例え
ば金や白金などの耐食性金属を蒸着して導電性を
持たせて一方の電極にする。この際、光源２５か
ら受光素子２６への光路にあたる検出部容器の光
路部２１ａおよび２２ａは半透明になるように耐
食性金属を蒸着する。検出部容器２１，２２と支
持部材２４とをスイツチ２８を介して直流電源２
７に接続する。２９，３０はＯリングパツキンで
ある。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a sectional view showing an embodiment of the sludge concentration meter according to the present invention. In FIG. 3, reference numerals 21 and 22 are detector containers made of a transparent insulating material such as glass or plastic, which are held via an insulator 23 on a conductive support member 24 such as a metal pipe. Reference numeral 25 denotes a light source, and 26 a light-receiving element, which are arranged in the detector containers 21 and 22, respectively. A corrosion-resistant metal such as gold or platinum is deposited on the outer surfaces of the detection portion containers 21 and 22 to make them conductive and serve as one electrode. At this time, a corrosion-resistant metal is deposited on the optical path portions 21a and 22a of the detection unit container, which correspond to the optical path from the light source 25 to the light receiving element 26, so as to become translucent. The detection unit containers 21 and 22 and the support member 24 are connected to the DC power supply 2 via the switch 28.
Connect to 7. 29 and 30 are O-ring packings.
このように構成された本発明一実施例の汚泥濃
度計は汚泥液中に挿入され、検出部容器２１，２
２が汚泥液に接液する。この状態で、スイツチ２
８を閉成して一方の電極である検出部容器２１，
２２と他方の電極である支持部材２４の間に汚泥
液を介して直流電流を流す。その結果、電気分解
が行なわれ、検出部容器２１，２２の表面には微
小気泡が発生し、汚泥の付着を防止する。なお、
このときの電気分解はつぎのようになる。 The sludge concentration meter according to the embodiment of the present invention configured as described above is inserted into the sludge liquid, and the detection portion containers 21, 2
2 comes into contact with the sludge liquid. In this state, switch 2
8 is closed and the detection part container 21, which is one electrode,
A direct current is passed between the electrode 22 and the support member 24, which is the other electrode, through the sludge liquid. As a result, electrolysis is performed, and microbubbles are generated on the surfaces of the detection unit containers 21 and 22, thereby preventing the adhesion of sludge. In addition,
The electrolysis at this time is as follows.
〔１〕 被測定液がH2Oを主とする場合
2H2O→2H2＋O2
一方の極から水素の気泡が、他方の極から酸素
の気泡がそれぞれ発生する。[1] When the liquid to be measured is mainly H 2 O 2H 2 O → 2H 2 +O 2 Hydrogen bubbles are generated from one pole and oxygen bubbles are generated from the other pole.
〔２〕 被測定液がNaOH水溶液を主とする場合
2NaCl＋2H2O→2NaOH＋H2＋Cl2
一方の極から水素の気泡が、他方の極から塩素
の気泡がそれぞれ発生する。[2] When the liquid to be measured is mainly a NaOH aqueous solution 2NaCl+2H 2 O→2NaOH+H 2 + Cl 2Hydrogen bubbles are generated from one pole and chlorine bubbles are generated from the other pole.
光源２５を点灯し、汚泥液を透過して受光素子
２６に受光された光量により汚泥濃度を測定する
測定行程中は気泡による影響を避けるため濃度計
本体に内蔵されたシーケンサによりスイツチ２８
を開成して電気分解を止め、測定値を電気的にホ
ールドし、測定行程終了後電気分解行程に入るよ
うにすればよい。本発明による汚泥濃度計は、従
来のワイパーによる汚れの除去の場合の可動部を
有しないのでつまりによる故障を起す虞れがな
く、本質的に汚れの付着を防止するので、長期に
わたつて無保守で安定な測定が維持される。 During the measurement process in which the light source 25 is turned on and the sludge concentration is measured by the amount of light that passes through the sludge liquid and is received by the light receiving element 26, the switch 28 is turned on by the sequencer built into the densitometer body to avoid the influence of air bubbles.
It is only necessary to open the cap to stop electrolysis, hold the measured value electrically, and start the electrolysis process after the measurement process is completed. The sludge concentration meter according to the present invention does not have any movable parts unlike the conventional wiper for removing dirt, so there is no risk of failure due to clogging, and since it essentially prevents dirt from adhering, it can be used for a long time. Maintenance maintains stable measurements.
つぎに、第４図により本発明の一変形例を説明
する。この変形例の汚泥濃度計は、一体化された
透明なガラスまたはプラスチツク製の検出部容器
３１をパイプなどの支持部材２４に直接取り付け
た構造である。検出部容器３１の光路部３１ａお
よび３１ｂとこれら光路部につながる導電ゾーン
３１ｃのみに、光路部が半透明になるように金ま
たは白金などを蒸着して導電性を持たせる。検出
部容器３１の他の部分は絶縁性を持つているので
金属パイプなどの支持部材２４とは電気的に絶縁
されている。そして検出部容器３１の導電ゾーン
３１ｃに端子ねじ３２を設け、直流電源２７に接
続する。また支持部材２４も直流電源２７に接続
する。 Next, a modified example of the present invention will be explained with reference to FIG. This modified sludge concentration meter has a structure in which an integrated detection container 31 made of transparent glass or plastic is directly attached to a support member 24 such as a pipe. Only the optical path sections 31a and 31b of the detection unit container 31 and the conductive zone 31c connected to these optical path sections are made conductive by vapor-depositing gold, platinum, or the like so that the optical path sections become translucent. The other parts of the detection unit container 31 have insulation properties and are therefore electrically insulated from the support member 24 such as a metal pipe. Then, a terminal screw 32 is provided in the conductive zone 31c of the detection unit container 31 and connected to the DC power source 27. The support member 24 is also connected to a DC power source 27.
このように構成された本発明一変形例の汚泥濃
度計も検出部容器３１の光路部３１ａ，３１ｂに
電気分解による気泡を発生させ汚泥の付着を防止
することができる。 The sludge concentration meter according to the modified example of the present invention configured in this manner can also generate air bubbles in the optical path portions 31a, 31b of the detection unit container 31 due to electrolysis, thereby preventing the adhesion of sludge.
なお、上述の両実施例では、検出部容器の外表
面に金属を蒸着して導電性を持たせるようにした
が、検出部容器を形成するガラスまたはプラスチ
ツクに導電性透明物質を添加して導電性を持たせ
るようにしてもよい。この場合は検出部容器の光
路部が透明で測定光の透過効率が高いというメリ
ツトがある。 In both of the above-mentioned embodiments, metal was vapor-deposited on the outer surface of the detection container to make it conductive. It may also be given a gender. In this case, there is an advantage that the optical path portion of the detection unit container is transparent and the transmission efficiency of measurement light is high.
以上詳述したように本発明によれば、検出部容
器に導電性を付与して一方の電極として電気分解
を行なうことにより、その生成物の気泡により検
出部容器の光路部への汚泥等の付着物の付着を防
止することができるので、光路部の汚れが本質的
に防止され、長期間にわたつて無保守で安定な測
定が維持される汚泥濃度計を提供することができ
る。 As described in detail above, according to the present invention, by imparting conductivity to the detection unit container and performing electrolysis using it as one electrode, sludge, etc., is transferred to the optical path section of the detection unit container by the bubbles of the product. Since the adhesion of deposits can be prevented, it is possible to provide a sludge concentration meter that essentially prevents contamination of the optical path and maintains stable measurement over a long period of time without maintenance.
第１図および第２図はそれぞれ汚泥濃度計の異
なる設置方式を示す概略図、第３図は本発明によ
る汚泥濃度計の一実施例を示す断面図、第４図は
同じく一変形例を示す断面図である。
２１，２２，３１…検出部容器、２１ａ，２２
ａ，３１ａ，３１ｂ…光路部、２４…支持部材、
２５…光源、２６…受光素子、２７…直流電源、
２８…スイツチ、３１ｃ…導電ゾーン。
1 and 2 are schematic views showing different installation methods of the sludge concentration meter, FIG. 3 is a sectional view showing one embodiment of the sludge concentration meter according to the present invention, and FIG. 4 also shows a modified example. FIG. 21, 22, 31...Detection unit container, 21a, 22
a, 31a, 31b... optical path section, 24... support member,
25... Light source, 26... Light receiving element, 27... DC power supply,
28...Switch, 31c...Conductive zone.
Claims (1)
検出部容器の突出部に収納され汚泥液を挾んで対
向配設された光源および受光素子を具えこの光源
から被測定汚泥液を透過して受光素子に受光され
た光量により被測定汚泥液の濃度を測定する汚泥
濃度計において、前記検出部容器に導電性を付与
して一方の電極とすると共にこの検出部容器を保
持する導電性の支持部材を他方の電極とし、これ
ら両電極間に直流電流を流して電気分解を行ない
電気分解生成物により検出部容器への汚泥の付着
を防止したことを特徴とする汚泥濃度計。 ２ 検出部容器の外表面に金属を蒸着し少くとも
光源から受光素子への光路部を半透明になるよう
に他より薄く蒸着して導電性を付与したことを特
徴とする特許請求の範囲第１項記載の汚泥濃度
計。 ３ 検出部容器の光路部およびこの光路部につな
がる導電ゾーンのみに金属を蒸着したことを特徴
とする特許請求の範囲第２項記載の汚泥濃度計。 ４ 検出部容器に導電性透明物質を添加して導電
性を付与したことを特徴とする特許請求の範囲第
１項記載の汚泥濃度計。[Scope of Claims] 1. A detection unit made of a transparent insulating material that is in contact with the sludge liquid to be measured. A detection unit comprising a light source and a light-receiving element that are housed in a protruding part of a container made of a transparent insulating material and are arranged opposite to each other with the sludge liquid in between. In a sludge concentration meter that measures the concentration of a sludge liquid to be measured based on the amount of light transmitted through the sludge liquid to be measured and received by a light receiving element, the detection part container is made conductive and serves as one electrode. The other electrode is a conductive support member that holds the sludge, and a direct current is passed between these two electrodes to perform electrolysis, thereby preventing the sludge from adhering to the detection container by the electrolysis product. Densitometer. 2. Claim No. 2, characterized in that a metal is vapor-deposited on the outer surface of the detection unit container, and the metal is vapor-deposited thinner than the other parts so that at least the optical path from the light source to the light receiving element becomes translucent, thereby imparting conductivity. The sludge concentration meter described in item 1. 3. The sludge concentration meter according to claim 2, wherein metal is vapor-deposited only on the optical path section of the detection container and the conductive zone connected to this optical path section. 4. The sludge concentration meter according to claim 1, wherein a conductive transparent substance is added to the detection container to impart conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP875680A JPS56106141A (en) | 1980-01-30 | 1980-01-30 | Sludge densitometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP875680A JPS56106141A (en) | 1980-01-30 | 1980-01-30 | Sludge densitometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56106141A JPS56106141A (en) | 1981-08-24 |
| JPS6251417B2 true JPS6251417B2 (en) | 1987-10-29 |
Family
ID=11701764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP875680A Granted JPS56106141A (en) | 1980-01-30 | 1980-01-30 | Sludge densitometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56106141A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2746145B2 (en) * | 1994-10-28 | 1998-04-28 | 日本電気株式会社 | Optical fiber for underwater measurement and method of installing the same |
-
1980
- 1980-01-30 JP JP875680A patent/JPS56106141A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56106141A (en) | 1981-08-24 |
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