JPH1164273A - Apparatus for testing diffusion of fluid - Google Patents
Apparatus for testing diffusion of fluidInfo
- Publication number
- JPH1164273A JPH1164273A JP9226419A JP22641997A JPH1164273A JP H1164273 A JPH1164273 A JP H1164273A JP 9226419 A JP9226419 A JP 9226419A JP 22641997 A JP22641997 A JP 22641997A JP H1164273 A JPH1164273 A JP H1164273A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- concentration
- inorganic salt
- specific gravity
- tracer
- 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.)
- Withdrawn
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は流体の拡散試験装置
に関し、特に発電プラント等から排出されるガスあるい
は液体等の流体の拡散状況を評価する際に使用される流
体の拡散試験装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid diffusion test apparatus, and more particularly to a fluid diffusion test apparatus used for evaluating the diffusion state of a fluid such as gas or liquid discharged from a power plant or the like.
【０００２】[0002]
【従来の技術】従来から、発電プラント等からの排煙等
のガス拡散状況を評価する場合には、発電プント周辺の
建物や地形の模型を製作して発生源からアンモニア等の
指標ガスを流して、その濃度を多数の測定点を設けて測
定する方法が一般的である。また、排水等の液体の拡散
状況は水槽を用いて、発生源からの吐出液の中に色で識
別できる指標物質（例えば黄緑色のウラニン）を混入
し、吐出して前記指標物質の拡散状況を高速度カメラ等
で撮像し、その映像を画素処理等の解析手法で定量評価
していた。2. Description of the Related Art Conventionally, when evaluating the state of gas diffusion such as flue gas from a power plant or the like, a model of a building or terrain around a power plant is manufactured, and an indicator gas such as ammonia is flown from a source. Generally, a method of measuring the concentration by providing a large number of measurement points is used. In addition, the diffusion state of liquid such as drainage is determined by mixing an indicator substance (for example, yellow-green uranine) that can be identified by color into the liquid discharged from the source using a water tank, and discharging the liquid to discharge the liquid. Was captured by a high-speed camera or the like, and the video was quantitatively evaluated by an analysis method such as pixel processing.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ガスを
用いて拡散状況を評価する方法は、設備そのものが大が
かりになるという課題があった。また、ウラニン等の指
標物質を高速度カメラで観察する方法は、測定精度が劣
る等の難点があった。更に、ガス及び液体のいずれを用
いる方法においても、用いた流体を破棄するためには、
指標物質等の除去のための吸収、希釈等の排液処理が必
要であった。However, the method of evaluating the diffusion state using a gas has a problem that the equipment itself becomes large. In addition, the method of observing an indicator substance such as uranine with a high-speed camera has disadvantages such as poor measurement accuracy. Furthermore, in the method using both gas and liquid, in order to discard the used fluid,
Wastewater treatment such as absorption and dilution for removal of the indicator substance and the like was required.
【０００４】本発明はこうした事情を考慮してなされた
もので、比重調整された無機塩の水溶液中に同様に比重
調整された異種の無機塩の水溶液を吐出させ、該吐出液
が拡散する領域に吐出液の濃度を測定するためのイオン
濃度測定手段を配置することにより、目的に応じた広範
囲な密度成層条件下での評価が可能な流体の拡散試験装
置を提供することを目的とする。The present invention has been made in view of the above circumstances, and discharges an aqueous solution of a different inorganic salt whose specific gravity has been similarly adjusted into an aqueous solution of an inorganic salt whose specific gravity has been adjusted, and an area in which the discharged liquid diffuses. It is an object of the present invention to provide a fluid diffusion test device that can be evaluated under a wide range of density stratification conditions according to the purpose by arranging an ion concentration measuring means for measuring the concentration of the discharged liquid in the apparatus.
【０００５】[0005]
【課題を解決するための手段】本発明は、水槽と、この
水槽内に予め定められた比重に調整され単層又は濃度に
より複層を形成する無機塩水溶液と、前記無機塩水溶液
とは異なった無機塩によりなるトレーサー水溶液と、こ
のトレーサー水溶液を吐出する吐出手段と、無機塩イオ
ンの濃度を測定するイオン濃度測定手段とを具備し、イ
オン濃度を測定することによりトレーサー水溶液の拡散
状況を測定することを特徴とした流体の拡散試験装置で
ある。SUMMARY OF THE INVENTION The present invention provides a water tank, an inorganic salt aqueous solution which is adjusted to a predetermined specific gravity in the water tank and forms a single layer or a plurality of layers by concentration, A tracer aqueous solution composed of an inorganic salt, a discharge means for discharging the tracer aqueous solution, and an ion concentration measuring means for measuring the concentration of inorganic salt ions, and measuring the diffusion state of the tracer aqueous solution by measuring the ion concentration It is a fluid diffusion test device characterized by performing.
【０００６】本発明において、前記イオン濃度測定手段
としては例えばイオン電極法を用いることが挙げられる
が、これに限定されるものではない。本発明において、
無機塩水溶液を用いるのは次の理由による。無機塩、例
えば塩化ナトリウム水溶液では密度が１ｗｔ％溶液で
１．００４１ｇ／ｃｍ3 、２６ｗｔ％溶液で１．１９４
４ｇ／ｃｍ3 と０．１９０３の比重調整が可能であり、
硫酸ナトリウム水溶液では密度が１ｗｔ％溶液で１．０
０６１ｇ／ｃｍ3 、２４ｗｔ％溶液で１．２３１８ｇ／
ｃｍ3 と０．２２５７の比重調整が可能である。これに
対し、有機化合物では一般に水溶液の濃度変化に対する
比重の変化は小さく、例えば酢酸のように大きめのもの
でも、１ｗｔ％溶液で０．９９８７ｇ／ｃｍ3 、８０ｗ
ｔ％溶液で１．０６４７ｇ／ｃｍ3 と比重調整範囲は
０．０６６程度である。即ち、無機塩の方が一般的に濃
度変化に対する比重の変化量が大きいため、本発明では
無機塩水溶液を用いる。In the present invention, the ion concentration measuring means may be, for example, an ion electrode method, but is not limited thereto. In the present invention,
The inorganic salt aqueous solution is used for the following reason. For an inorganic salt, for example, an aqueous solution of sodium chloride, the density is 1.0041 g / cm 3 for a 1 wt% solution, and 1.194 for a 26 wt% solution.
It is possible to adjust the specific gravity of 4g / cm 3 and 0.1903,
For sodium sulfate aqueous solution, the density is 1.0% for a 1 wt% solution.
0.631 g / cm 3 , 1.2318 g / 24 wt% solution
It is possible to adjust the specific gravity between cm 3 and 0.2257. On the other hand, in organic compounds, the change in specific gravity with respect to the change in the concentration of an aqueous solution is generally small. For example, even a large one such as acetic acid is 0.9987 g / cm 3 and 80 watts in a 1 wt% solution.
The specific gravity adjustment range is about 1.066 g / cm 3 for a t% solution, which is about 0.066. That is, since the change in specific gravity with respect to the concentration change is generally larger in the inorganic salt, the aqueous solution of the inorganic salt is used in the present invention.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施例に係る流
体の拡散試験装置についてを図１を参照して説明する。
図中の付番１は、硫酸ナトリウム水溶液２が溜められた
水槽である。この水槽１の底部１ａには、トレーサー液
としての塩化ナトリウム水溶液を吐出する吐出管３が設
けられている。なお、吐出管３の上部の硫酸ナトリウム
水溶液２には、トレーサー液の拡散部４が拡散してい
る。前記水槽１の上部１ｂには、比較電極５及び塩素イ
オン電極６、７、８が夫々配置されている。ここで、比
較電極５は吐出されてくる塩化ナトリウム水溶液の影響
が極力少ないところに配置され、塩素イオン電極６、
７、８は塩化ナトリウム水溶液の拡散状況を調べたいと
ころに配置されている。前記比較電極５は接続ケーブル
９を介してイオンメーター13に接続され、塩素イオン電
極６、７、８は夫々接続ケーブル10、11、12を介してイ
オンメーター13に接続されている。このイオンメーター
13には、データ処理装置14が接続されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fluid diffusion test apparatus according to one embodiment of the present invention will be described below with reference to FIG.
Reference numeral 1 in the figure denotes a water tank in which an aqueous sodium sulfate solution 2 is stored. A discharge pipe 3 for discharging a sodium chloride aqueous solution as a tracer liquid is provided at the bottom 1 a of the water tank 1. The tracer liquid diffusion part 4 is diffused in the aqueous sodium sulfate solution 2 above the discharge pipe 3. A comparative electrode 5 and chlorine ion electrodes 6, 7, 8 are arranged on the upper portion 1b of the water tank 1, respectively. Here, the comparative electrode 5 is disposed in a place where the influence of the discharged sodium chloride aqueous solution is as small as possible.
Reference numerals 7 and 8 are arranged where the diffusion state of the aqueous sodium chloride solution is to be checked. The reference electrode 5 is connected to an ion meter 13 via a connection cable 9, and the chloride ion electrodes 6, 7, 8 are connected to the ion meter 13 via connection cables 10, 11, 12 respectively. This ion meter
A data processing device 14 is connected to 13.
【０００８】本実施例では、水槽１中に予め比重を１．
０５〜１．２０まで調整した硫酸ナトリウム水溶液２を
溜めておく。この場合、測定目的に応じては（密度成層
を再現する場合は）例えば水槽１の底部１ａから上部１
ｂにかけて徐々に比重が小さくなるように調整して溜め
ておく。通常は比重の軽い水溶液（比重を１．０５とし
た水溶液）を最初に注水し、順次比重の重い水溶液（最
大比重１．２）を注水するので、比重の軽い水溶液を比
重の重い水溶液が押し上げる形となり、水溶液が混ざり
合うことなく、深さ方向に密度成層が形成される。In this embodiment, the specific gravity is set to 1.
The aqueous sodium sulfate solution 2 adjusted from 05 to 1.20 is reserved. In this case, depending on the purpose of measurement (when reproducing density stratification), for example, from the bottom 1a of the water tank 1 to the top 1
Adjust so that the specific gravity gradually decreases toward b, and store it. Usually, an aqueous solution with a low specific gravity (aqueous solution with a specific gravity of 1.05) is injected first, and then an aqueous solution with a high specific gravity (maximum specific gravity 1.2) is sequentially injected. The density stratification is formed in the depth direction without mixing the aqueous solutions.
【０００９】本実施例では、最終的に密度成層が形成さ
れた時点では、水槽１の上部１ｂ付近の比重が１．０５
となり、水槽１の底部１ａ付近の比重が１．２０とな
る。したがって、水槽１の底部１ａと上部１ｂの比重差
は１．２０−１．０５＝０．１５となる。この比重差は
野外温度分布の温度差約１０℃に相当し、通常野外で得
られる温度分布を充分満足する。In this embodiment, when the density stratification is finally formed, the specific gravity near the upper part 1b of the water tank 1 is 1.05.
, And the specific gravity near the bottom 1a of the water tank 1 is 1.20. Therefore, the specific gravity difference between the bottom portion 1a and the upper portion 1b of the water tank 1 is 1.20-1.05 = 0.15. This specific gravity difference corresponds to a temperature difference of about 10 ° C. in the outdoor temperature distribution, and sufficiently satisfies the temperature distribution normally obtained in the field.
【００１０】このような構成の流体の拡散試験装置にお
いて、トレーサー液の吐出管３から塩化ナトリウム水溶
液を吐出すると、塩化ナトリウム水溶液は例えば図１の
ように拡散する。この場合、塩化ナトリウム水溶液は煙
突や排気筒等から排出されるガスを模擬するものである
から、一般的に周囲大気の比重より軽くなる。本実施例
での比重は１．００〜１．０５である。その結果、塩素
イオン電極６、７、８には夫々塩素イオン濃度に比例し
た起電力が発生するので、その起電力をイオンメータ13
で補正することによって塩化物濃度を求めることができ
る。In the fluid diffusion test apparatus having such a configuration, when an aqueous solution of sodium chloride is discharged from the discharge pipe 3 of the tracer liquid, the aqueous solution of sodium chloride diffuses as shown in FIG. 1, for example. In this case, since the aqueous sodium chloride solution simulates gas discharged from a chimney, an exhaust stack, or the like, it is generally lighter than the specific gravity of the surrounding atmosphere. The specific gravity in this embodiment is 1.00 to 1.05. As a result, an electromotive force is generated in each of the chlorine ion electrodes 6, 7, and 8 in proportion to the chloride ion concentration.
The chloride concentration can be determined by performing the above correction.
【００１１】このように、上記実施例に係る流体の拡散
試験装置によれば、水溶性で広範囲にわたって比重調整
（通常、野外での温度分布を模擬するための水溶液の比
重は１．０５〜１．２０の範囲）が可能な無機塩の水溶
液を選択することにより、広範囲な密度成層下における
拡散濃度の評価が可能となる。また、トレーサー液を任
意に選択し、イオン検出装置に感応的な無機塩の水溶液
を用いることにより、選択的（濃度測定において、周辺
水溶液の影響を受けにくい）で高感度な評価が可能とな
り、実験精度の向上につながる。更に、実施例のように
無害な無機塩を選定することにより、使用液のは廃棄に
おいても特別な処理を施す必要がなくなり、経済的にも
有利である。As described above, according to the fluid diffusion test apparatus according to the above embodiment, the specific gravity is adjusted over a wide range with water solubility (normally, the specific gravity of the aqueous solution for simulating the temperature distribution in the field is 1.05 to 1). By selecting an aqueous solution of an inorganic salt capable of (a range of .20), the diffusion concentration can be evaluated under a wide range of density stratification. In addition, by selecting a tracer solution arbitrarily and using an aqueous solution of an inorganic salt that is sensitive to the ion detection device, it is possible to perform selective (less affected by the surrounding aqueous solution in concentration measurement) and highly sensitive evaluation, This leads to an improvement in experimental accuracy. Further, by selecting a harmless inorganic salt as in the embodiment, it is not necessary to perform a special treatment even when the used liquid is disposed, which is economically advantageous.
【００１２】なお、上記実施例では、無機塩水溶液とし
て硫酸ナトリウム水溶液を用い、トレーサー水溶液とし
て塩化ナトリウム水溶液を用いた場合について述べた
が、これに限定されず、イオン電極に感応するイオンを
含む溶液なら他の溶液を用いてもよい。In the above embodiment, a case was described in which an aqueous solution of sodium sulfate was used as the aqueous solution of the inorganic salt and an aqueous solution of sodium chloride was used as the aqueous solution of the tracer. However, the present invention is not limited to this. Then, another solution may be used.
【００１３】[0013]
【発明の効果】以上詳述したように本発明によれば、比
重調整された無機塩の水溶液中に同様に比重調整された
異種の無機塩の水溶液を吐出させ該吐出液が拡散する領
域に吐出液の濃度を測定するためのイオン濃度測定手段
を配置することにより、目的に応じた広範囲な密度成層
条件下での評価が可能な流体の拡散試験装置を提供でき
る。As described above in detail, according to the present invention, an aqueous solution of a different inorganic salt whose specific gravity is similarly adjusted is discharged into an aqueous solution of an inorganic salt whose specific gravity is adjusted, and the solution is diffused into a region where the discharged liquid is diffused. By arranging the ion concentration measuring means for measuring the concentration of the discharged liquid, it is possible to provide a fluid diffusion test device capable of evaluating under a wide range of density stratification conditions according to the purpose.
【図１】本発明の一実施例に係る流体の拡散試験装置の
説明図。FIG. 1 is an explanatory view of a fluid diffusion test apparatus according to one embodiment of the present invention.
１…水槽、 ２…硫酸ナトリウム水溶液、 ３…吐出管、 ４…トレーサー液の拡散部、 ５…比較電極、 ６、７、８…塩素イオン電極、 ９、10、11、12…接続ケーブル、 13…イオンメーター、 14…データ処理装置。 DESCRIPTION OF SYMBOLS 1 ... Water tank, 2 ... Sodium sulfate aqueous solution, 3 ... Discharge pipe, 4 ... Tracer liquid diffusion part, 5 ... Reference electrode, 6, 7, 8 ... Chloride ion electrode, 9, 10, 11, 12 ... Connection cable, 13 ... Ion meter, 14 ... Data processing device.
Claims (2)
重に調整され単層又は濃度により複層を形成する無機塩
水溶液と、前記無機塩水溶液とは異なった無機塩により
なるトレーサー水溶液と、このトレーサー水溶液を吐出
する吐出手段と、無機塩イオンの濃度を測定するイオン
濃度測定手段とを具備し、イオン濃度を測定することに
よりトレーサー水溶液の拡散状況を測定することを特徴
とした流体の拡散試験装置。1. A water tank, an aqueous solution of an inorganic salt which is adjusted to a predetermined specific gravity in the water tank and forms a single layer or a multi-layer by concentration, and an aqueous solution of a tracer comprising an inorganic salt different from the aqueous solution of the inorganic salt. A discharge means for discharging the tracer aqueous solution, and an ion concentration measuring means for measuring the concentration of the inorganic salt ion, wherein the diffusion state of the tracer aqueous solution is measured by measuring the ion concentration. Diffusion test equipment.
極法を用いることを特徴とする請求項１記載の流体の拡
散試験装置。2. A fluid diffusion test apparatus according to claim 1, wherein an ion electrode method is used as said ion concentration measuring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9226419A JPH1164273A (en) | 1997-08-22 | 1997-08-22 | Apparatus for testing diffusion of fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9226419A JPH1164273A (en) | 1997-08-22 | 1997-08-22 | Apparatus for testing diffusion of fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1164273A true JPH1164273A (en) | 1999-03-05 |
Family
ID=16844836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9226419A Withdrawn JPH1164273A (en) | 1997-08-22 | 1997-08-22 | Apparatus for testing diffusion of fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1164273A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901614A (en) * | 2012-10-11 | 2013-01-30 | 华北电力大学 | Aquatic vegetation stress measuring device |
| CN103604581A (en) * | 2013-11-15 | 2014-02-26 | 北京理工大学 | A gas ejection test apparatus |
| CN111207906A (en) * | 2020-01-15 | 2020-05-29 | 天津大学 | Continuous determination method for local atomization rain intensity of multi-working-condition discharge flow under low-pressure environment |
-
1997
- 1997-08-22 JP JP9226419A patent/JPH1164273A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901614A (en) * | 2012-10-11 | 2013-01-30 | 华北电力大学 | Aquatic vegetation stress measuring device |
| CN103604581A (en) * | 2013-11-15 | 2014-02-26 | 北京理工大学 | A gas ejection test apparatus |
| CN111207906A (en) * | 2020-01-15 | 2020-05-29 | 天津大学 | Continuous determination method for local atomization rain intensity of multi-working-condition discharge flow under low-pressure environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20041102 |