JP2005127827A - Apparatus for measuring oil content - Google Patents

Apparatus for measuring oil content Download PDF

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JP2005127827A
JP2005127827A JP2003363056A JP2003363056A JP2005127827A JP 2005127827 A JP2005127827 A JP 2005127827A JP 2003363056 A JP2003363056 A JP 2003363056A JP 2003363056 A JP2003363056 A JP 2003363056A JP 2005127827 A JP2005127827 A JP 2005127827A
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measured
liquid
oil content
flat plate
value
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Junichi Nawama
潤一 縄間
Yasuyuki Nukina
康之 貫名
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To realize an oil content measuring apparatus for easily and precisely measuring the oil content contained in liquid to be measured, regardless of the volatility or the nonvolatility. <P>SOLUTION: A torque value, required for rotating a hydrophilic treatment disc 2 and a lipophilic treatment disc 5 at a specified rotational speed, is measured by torque measurement sections 3, 6, and the amount of oil content contained in the liquid to be measured is calculated from the ratio of both the measured values. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は被測定液に含まれる油分を測定する油分測定装置に関するもので、特にセンサ部分の表面状態の親油性、親水性の違いによる被測定液の物性値の差異から被測定液に含まれる油分を測定するものである。   The present invention relates to an oil content measuring apparatus for measuring the oil content contained in a liquid to be measured, and is particularly included in the liquid to be measured from the difference in physical properties of the liquid to be measured due to the difference in lipophilicity and hydrophilicity of the surface state of the sensor part. The oil content is measured.

従来、被測定液に含まれる油分を測定する装置には、揮発性油分をにおいセンサによって測定するものが知られている（例えば、特許文献１、非特許文献１参照）。   2. Description of the Related Art Conventionally, devices that measure oil content in a liquid to be measured have been known that measure volatile oil content with an odor sensor (see, for example, Patent Document 1 and Non-Patent Document 1).

図３は、従来のにおいセンサを用いる水中油分測定装置の構成図である。図３に示す様に、非測定液を容器１０１に入口１０２から注入し、満水位以上の非測定液を出口１０３から排出する。容器１０１の下部に設けたバブリング孔１０４から空気を導入し、容器１０１内でバブリングを発生させる。発生したバブリング内に被測定液中の揮発性油分は拡散し、除湿器１０５によって水分が除去された後、においセンサ１０６によってその揮発した油分量が測定されることとなる。
特許第３３８１１４４号公報 （株）横河電機発行、水中油分計に関する説明資料、１９９８年 FIG. 3 is a configuration diagram of an oil-in-water measurement apparatus using a conventional odor sensor. As shown in FIG. 3, the non-measurement liquid is injected into the container 101 from the inlet 102, and the non-measurement liquid at the full water level or higher is discharged from the outlet 103. Air is introduced from a bubbling hole 104 provided in the lower part of the container 101 to generate bubbling in the container 101. The volatile oil in the liquid to be measured diffuses in the generated bubbling, and after the moisture is removed by the dehumidifier 105, the amount of the volatilized oil is measured by the odor sensor 106.
Japanese Patent No. 3381444 Published by Yokogawa Electric Corporation, explanatory material on oil-in-water meter, 1998

しかしながら、前記従来の構成では、バブリングによる揮発性油分の揮発現象を利用しているために、被測定液中に含まれる油分の中で揮発性のものしか検知できないという課題を有していた。   However, since the conventional configuration utilizes the volatilization phenomenon of volatile oil due to bubbling, there is a problem that only volatile oil can be detected in the oil contained in the liquid to be measured.

本発明は、前記従来の課題を解決する油分測定装置であり、親水性センサ部と親油性センサ部を有する測定装置によって、それぞれのセンサ部が測定する粘性抵抗、回転トルクなどの測定値の差異から被測定液に含まれる油分量を、揮発性油分、非揮発性油分に関わらず検知するものである。   The present invention is an oil content measurement apparatus that solves the above-described conventional problems, and the measurement apparatus having a hydrophilic sensor part and an oleophilic sensor part, the difference in measured values such as viscous resistance and rotational torque measured by each sensor part. The amount of oil contained in the liquid to be measured is detected regardless of whether it is a volatile oil or a non-volatile oil.

前記従来の課題を解決するために、本発明の油分測定装置は、親水性表面を有する板と親油性表面を有する板とを備え、かつ、被測定液と前記親水性表面を有する板との間に働く粘性抵抗測定手段と、被測定液と前記親油性表面を有する板との間に働く粘性抵抗測定手段とを具備し、被測定液の親水性表面による粘性抵抗値と、被測定液の親油性表面による粘性抵抗値とを用いた演算によって被測定液の油分濃度を算出するものである。   In order to solve the conventional problems, an oil content measuring apparatus of the present invention includes a plate having a hydrophilic surface and a plate having an oleophilic surface, and includes a liquid to be measured and a plate having the hydrophilic surface. Viscous resistance measuring means acting between, and a viscous resistance measuring means acting between the liquid to be measured and the plate having the lipophilic surface, the viscosity resistance value due to the hydrophilic surface of the liquid to be measured, and the liquid to be measured The oil concentration of the liquid to be measured is calculated by calculation using the viscous resistance value due to the lipophilic surface.

つまり、本発明の油分測定装置では、親水性表面を有する板をセンサ部として測定した非測定液の粘性抵抗値と、親油性表面を有する板をセンサ部として測定した非測定液の粘性抵抗値とを求め、両測定値の比較から非測定液に含まれる油分量を算出するものである。以下に、本発明の油分測定装置の動作原理について説明する。   That is, in the oil content measuring apparatus of the present invention, the viscosity resistance value of the non-measurement liquid measured using a plate having a hydrophilic surface as a sensor part, and the viscosity resistance value of a non-measurement liquid measured using a plate having a lipophilic surface as a sensor part. And the amount of oil contained in the non-measurement liquid is calculated from the comparison of both measured values. Below, the principle of operation of the oil content measuring apparatus of this invention is demonstrated.

親水性表面を有する板をセンサ部として非測定液の粘性抵抗値を測定した場合、センサ部表面が親水性であるために、親水性表面と非測定液中の油分が互いにはじき合うために、親水性表面を有する板により測定した非測定液の粘性抵抗値は、非測定液中の油分含有量の影響をほとんど受けることがない。   When the viscosity resistance value of the non-measurement liquid is measured using a plate having a hydrophilic surface as the sensor part, the oil content in the hydrophilic surface and the non-measurement liquid repels each other because the sensor part surface is hydrophilic. The viscosity resistance value of the non-measuring liquid measured with a plate having a hydrophilic surface is hardly affected by the oil content in the non-measuring liquid.

一方で、親油性表面を有する板をセンサ部として非測定液の粘性抵抗値を測定した場合、センサ部表面が親油性であるために、親油性表面と非測定液中の油分が互いに良く馴染み合うので、親油性表面を有する板により測定した非測定液の粘性抵抗値は、非測定液中の油分含有量により大きく影響を受ける。   On the other hand, when the viscosity resistance value of the non-measurement liquid is measured using a plate with a lipophilic surface as the sensor part, the oil content in the non-measurement liquid and the lipophilic surface and the non-measurement liquid are familiar to each other because the sensor part surface is lipophilic. Therefore, the viscosity resistance value of the non-measuring liquid measured by a plate having a lipophilic surface is greatly affected by the oil content in the non-measuring liquid.

そこで、親水性表面を有する板と親油性表面を有する板のそれぞれによって測定した非測定液の粘性抵抗値を比較し、例えば、親油性表面を有する板により測定した非測定液の粘性抵抗値の、親水性表面を有する板により測定した非測定液の粘性抵抗値に対する比率を求め、その比率から非測定液に含まれる油分量を算出することができる。   Therefore, the viscosity resistance value of the non-measurement liquid measured by each of the plate having the hydrophilic surface and the plate having the lipophilic surface is compared, for example, the viscosity resistance value of the non-measurement liquid measured by the plate having the lipophilic surface. The ratio of the non-measurement liquid to the viscous resistance value measured by a plate having a hydrophilic surface can be obtained, and the amount of oil contained in the non-measurement liquid can be calculated from the ratio.

また本発明の油分測定装置では、あらかじめ被処理液に界面活性剤を添加、攪拌した後に粘性抵抗を測定するので、非測定液に含まれる油分が界面活性剤により非測定液中で安定した分散状態となるために、粘性抵抗の測定値が安定するので、精度の良い油分測定が可能になる。   In the oil content measuring apparatus of the present invention, the surfactant is added to the liquid to be treated in advance, and the viscosity resistance is measured after stirring. Therefore, the oil contained in the non-measuring liquid is stably dispersed in the non-measuring liquid by the surfactant. Since the measured value of the viscous resistance is stabilized due to the state, the oil content can be measured with high accuracy.

第１の発明は、親水性表面を有する板と親油性表面を有する板とを備え、かつ、被測定液と前記親水性表面を有する板との間に働く粘性抵抗測定手段と、被測定液と前記親油性表面を有する板との間に働く粘性抵抗測定手段とを具備し、被測定液の親水性表面による粘性抵抗値と、被測定液の親油性表面による粘性抵抗値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置である。本発明では、被測定液中の油分の影響を受けにくい親水性表面を有する板により測定した被測定液の粘性抵抗値と、被測定液中の油分含有量に比例して測定値が影響を受ける親油性表面を有する板により測定した被測定液の粘性抵抗値とを測定し、両者を比較することにより、被測定液に含まれる油分量を算出することができる。   1st invention is equipped with the board which has a hydrophilic surface, and the board which has a lipophilic surface, and the viscosity resistance measuring means which acts between a to-be-measured liquid and the board which has the said hydrophilic surface, and to-be-measured liquid And a viscous resistance measuring means that works between the lipophilic surface and the plate having the lipophilic surface, and the viscous resistance value due to the hydrophilic surface of the liquid to be measured and the viscous resistance value due to the lipophilic surface of the liquid to be measured were used. It is an oil content measuring device that calculates the oil content concentration of the liquid to be measured by calculation. In the present invention, the measured resistance is affected in proportion to the viscosity resistance value of the measured liquid measured by a plate having a hydrophilic surface that is not easily affected by the oil content in the measured liquid and the oil content in the measured liquid. The amount of oil contained in the liquid to be measured can be calculated by measuring the viscosity resistance value of the liquid to be measured as measured by the plate having the lipophilic surface to be received and comparing the two.

第２の発明は、第１の発明において、あらかじめ被測定液に界面活性剤を添加、攪拌した後に粘性抵抗を測定する油分測定装置であり、本発明により被測定液に含まれる油分は界面活性剤の作用により被測定液中で安定した分散状態となるので、粘性抵抗値が安定し、精度の高い油分測定装置が実現することとなる。   The second invention is the oil content measuring apparatus according to the first invention, wherein a surfactant is added to the liquid to be measured in advance, and the viscosity resistance is measured after stirring. The oil contained in the liquid to be measured according to the present invention is a surface active substance. Since the agent is in a stable dispersion state in the liquid to be measured by the action of the agent, the viscous resistance value is stabilized, and a highly accurate oil content measuring apparatus is realized.

第３の発明は、回転軸と同軸上に設けられた表面が親水性の円盤を被測定液中で所定回転速度で回転させるのに必要なトルク値と、回転軸と同軸上に設けられた表面が親油性の円盤を被測定液中で所定回転速度で回転させるのに必要なトルク値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置である。本発明の油分測定装置では、被測定液に浸した親水性、親油性のそれぞれの表面を有する円盤を所定回転速度で回転させる時に必要なそれぞれのトルク値を比較して被測定液中に含まれる油分量を算出するので、装置の大型化を招来することなく簡便に被測定液に含まれる油分量を測定することができる。   According to a third aspect of the present invention, there is provided a torque value necessary for rotating a disk having a hydrophilic surface provided coaxially with the rotating shaft at a predetermined rotational speed in the liquid to be measured, and provided coaxially with the rotating shaft. An oil content measuring apparatus that calculates an oil content concentration of a liquid to be measured by calculation using a torque value necessary for rotating a disk having a lipophilic surface in the liquid to be measured at a predetermined rotation speed. In the oil content measuring apparatus of the present invention, each torque value required when rotating a disk having hydrophilic and lipophilic surfaces immersed in the liquid to be measured at a predetermined rotational speed is included in the liquid to be measured. Therefore, the amount of oil contained in the liquid to be measured can be easily measured without causing an increase in the size of the apparatus.

第４の発明は、第３の発明において、あらかじめ被測定液に界面活性剤を添加、攪拌した後にトルク値を測定する油分測定装置であり、本発明により被測定液に含まれる油分は界面活性剤の作用により被測定液中で安定した分散状態となるので、トルク値が安定し、精度の高い油分測定装置が実現することとなる。   A fourth invention is an oil content measuring apparatus for measuring a torque value after adding a surfactant to a liquid to be measured in advance and stirring in the third invention, and the oil content contained in the liquid to be measured according to the present invention is a surfactant. Since the agent is in a stable dispersion state in the liquid to be measured by the action of the agent, the torque value is stabilized, and a highly accurate oil content measuring device is realized.

第５の発明は、親水性表面を有する平板と親油性表面を有する平板とを備え、かつ、被測定液中で前記親水性表面を有する平板を該平板の平面接線方向に所定周波数で所定振幅振動させるために必要な仕事率測定部と、被測定液中で前記親油性表面を有する平板を該平板の平面接線方向に所定周波数で所定振幅振動させるために必要な仕事率測定部とを具備し、親水性表面を有する平板で測定した仕事率値と、親油性表面を有する平板で測定した仕事率値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置である。本発明の油分測定装置は、親水性、親油性表面をそれぞれ有する平板を被測定液中で所定周波数、所定振幅振動させるために必要なそれぞれの仕事率（エネルギー）の比較から被測定液に含まれる油分量の算出を行うので、装置の大型化を招来することがなく、構成が簡便でありながら精度の高い測定が可能になる。   A fifth invention includes a flat plate having a hydrophilic surface and a flat plate having an oleophilic surface, and the flat plate having the hydrophilic surface in the liquid to be measured has a predetermined amplitude in a plane tangential direction of the flat plate at a predetermined frequency. A power measurement unit required for vibrating, and a power measurement unit required for vibrating the flat plate having the lipophilic surface in the liquid to be measured with a predetermined frequency in the plane tangential direction of the flat plate at a predetermined frequency. The oil content measuring apparatus calculates the oil concentration of the liquid to be measured by calculation using the power value measured with a flat plate having a hydrophilic surface and the power value measured with a flat plate having an oleophilic surface. The oil content measuring apparatus of the present invention is included in the liquid to be measured from the comparison of the respective work rates (energy) required to vibrate a flat plate having hydrophilic and lipophilic surfaces in the liquid to be measured at a predetermined frequency and a predetermined amplitude. The amount of oil to be calculated is calculated, so that the size of the apparatus is not increased, and high-precision measurement is possible with a simple configuration.

第６の発明は、第５の発明において、平板を振動させる周波数を５Ｈｚ以上５００Ｈｚ以下として親水性、親油性の表面をそれぞれ有する平板を被測定液中で所定振幅振動させるために必要な仕事率のそれぞれの測定値の比較によって、被測定液に含まれる油分含有量を算出する油分想定装置である。周波数が５Ｈｚ未満の場合、親水性表面を有する平板は被測定液に含まれる油分の影響を受けやすくなり、また周波数が５００Ｈｚ以上の場合は親油性表面を有する平板は被測定液に含まれる油分の影響を受けにくくなるので、両者の場合共に親油性、親水性のそれぞれの平板による仕事率の測定値の差異が小さくなり、正確な油分測定が困難となるので、本発明の様に周波数は５Ｈｚ以上かつ５００Ｈｚ以下である必要が有る。   The sixth aspect of the invention relates to the fifth aspect of the invention, wherein the frequency required to vibrate the flat plate is 5 Hz or more and 500 Hz or less, and the power required to vibrate the flat plate having hydrophilic and lipophilic surfaces in the liquid to be measured with a predetermined amplitude. It is an oil content assumption apparatus which calculates oil content contained in a to-be-measured liquid by comparison of each measured value. When the frequency is less than 5 Hz, the flat plate having a hydrophilic surface is easily affected by oil contained in the liquid to be measured, and when the frequency is 500 Hz or more, the flat plate having an oleophilic surface is oil contained in the liquid to be measured. In both cases, the difference in the measured value of the work rate between the oleophilic and hydrophilic plates is small, making it difficult to measure the oil content accurately. It is necessary to be 5 Hz or more and 500 Hz or less.

第７の発明は、第５または第６の発明において、あらかじめ被処理液に界面活性剤を添加、攪拌した後に仕事率値を測定するので、被測定液に含まれる油分は界面活性剤の作用により被測定液中で安定した分散状態となり、測定する仕事率が安定し、精度の高い油分測定装置が実現することとなる。   In the seventh invention, in the fifth or sixth invention, the surfactant is added to the liquid to be treated in advance, and the power value is measured after stirring, so that the oil contained in the liquid to be measured is the action of the surfactant. As a result, a stable dispersion state is obtained in the liquid to be measured, the power of measurement is stabilized, and a highly accurate oil content measuring apparatus is realized.

第８の発明は、第１の発明から第７の発明のいずれかにおいて、被処理液の温度検知手段を設け、測定によって得た粘性抵抗値、トルク値、または仕事率値を温度補償換算した後の換算値の演算によって被測定液の油分濃度を算出する油分測定装置であるので、温度による測定値の変化分が補償され、精度の高い油分測定が実現する。   According to an eighth invention, in any one of the first to seventh inventions, a temperature detecting means for the liquid to be treated is provided, and the viscous resistance value, torque value, or power value obtained by the measurement is converted to temperature compensation. Since the oil content measuring device calculates the oil concentration of the liquid to be measured by calculating the converted value later, the change in the measured value due to the temperature is compensated, and highly accurate oil content measurement is realized.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における油分測定装置の構成図である。１は回転軸であり、同軸に親水性表面を有する親水処理円盤２が取り付けてある。回転軸１の回転トルクをトルク測定部３により測定する。また、４は回転軸であり、同軸に親油性表面を有する親油処理円盤５が取り付けてある。回転軸４の回転トルクをトルク測定部６により測定する。 (Embodiment 1)
FIG. 1 is a configuration diagram of an oil content measuring apparatus according to the first embodiment of the present invention. Reference numeral 1 denotes a rotating shaft, to which a hydrophilic processing disk 2 having a hydrophilic surface coaxially is attached. The torque measuring unit 3 measures the rotational torque of the rotating shaft 1. Reference numeral 4 denotes a rotating shaft, to which a lipophilic treatment disk 5 having a lipophilic surface is coaxially attached. The torque measuring unit 6 measures the rotational torque of the rotating shaft 4.

親水処理円盤２及び親油処理円盤５は、共に容器８内に蓄えた被測定液である溶液７に浸している。回転軸１及び回転軸４は、それぞれトルク測定部３、トルク測定部６に接続され、回転時のトルクが測定される。   Both the hydrophilic treatment disk 2 and the oleophilic treatment disk 5 are immersed in a solution 7 that is a liquid to be measured stored in a container 8. The rotating shaft 1 and the rotating shaft 4 are connected to the torque measuring unit 3 and the torque measuring unit 6, respectively, and the torque during rotation is measured.

回転軸１及び回転軸４は、トルク測定に誤差が出ないよう適度な剛性を有するものであれば良く、また、装置の用途上、防錆性を有する材料であることが望ましい。本実施の形態では直径２ｍｍのステンレスの棒を用いたが、本発明は本材質、本直径に限定されるものではない。   The rotating shaft 1 and the rotating shaft 4 may be any material having an appropriate rigidity so as not to cause an error in torque measurement, and are desirably made of a material having rust prevention properties for the purpose of use of the apparatus. In the present embodiment, a stainless steel rod having a diameter of 2 mm is used, but the present invention is not limited to the material and the diameter.

親水処理円盤２及び親油処理円盤５は、トルク測定に誤差が出ないよう適度な剛性を有するものであれば良く、また、装置の用途上、防錆性を有する材料であることが望ましい。本実施の形態では直径５ｍｍ、厚さ１ｍｍの円盤状のステンレスを用いたが、本発明は本材質、本直径に限定されるものではない。   The hydrophilic treatment disc 2 and the oleophilic treatment disc 5 may be any material having an appropriate rigidity so as not to cause an error in torque measurement, and are desirably made of a material having antirust properties for the purpose of use of the apparatus. In this embodiment, disk-shaped stainless steel having a diameter of 5 mm and a thickness of 1 mm is used, but the present invention is not limited to the material and the diameter.

親水処理円盤２の表面を鏡面状に研磨して親水性処理を施し、回転軸１に市販の接着剤にて固定した。親油処理円盤５の表面にシリコーンオイルを含有する親油塗膜を塗布した後、回転軸４に市販の接着剤にて固定した。   The surface of the hydrophilic treatment disk 2 was polished into a mirror surface and subjected to hydrophilic treatment, and fixed to the rotating shaft 1 with a commercially available adhesive. A lipophilic coating film containing silicone oil was applied to the surface of the lipophilic treatment disk 5 and then fixed to the rotating shaft 4 with a commercially available adhesive.

以下、実験条件、結果について詳細に述べる。溶液７として水道水に市販のサラダ油を所定量分散したものを用いて、トルク測定部３、トルク測定部６により回転軸１及び回転軸４のそれぞれに掛かるトルクを測定した。なお、回転軸１及び回転軸４の回転速度を２ｒｐｍに固定して実験を行った。   The experimental conditions and results are described in detail below. Torque applied to each of the rotating shaft 1 and the rotating shaft 4 was measured by the torque measuring unit 3 and the torque measuring unit 6 using a solution 7 in which a predetermined amount of commercially available salad oil was dispersed in tap water. In addition, it experimented by fixing the rotational speed of the rotating shaft 1 and the rotating shaft 4 to 2 rpm.

測定結果を表１に示す。   The measurement results are shown in Table 1.

Figure 2005127827
Figure 2005127827

なお、表１中で、トルクの単位Ｎ・ｍはニュートン・メートルを意味する。   In Table 1, the unit of torque N · m means Newton meter.

表１の実験結果から、親水処理円盤２によるトルク測定値（トルク測定部３でのトルク測定値）は油含有量にほとんど影響を受けず、親油処理円盤５によるトルク測定値（トルク測定部４でのトルク測定値）は油含有量に比例して値が増大するので、両測定値の比率は油含有量に比例した値となり、従って、その比率から溶液の油含有量を算出することができることが分かる。   From the experimental results in Table 1, the torque measurement value by the hydrophilic treatment disk 2 (torque measurement value by the torque measurement unit 3) is hardly affected by the oil content, and the torque measurement value by the lipophilic treatment disk 5 (torque measurement unit) (Torque measurement value at 4) increases in proportion to the oil content, so the ratio of both measurement values is proportional to the oil content, and therefore calculate the oil content of the solution from that ratio. You can see that

また、溶液７にあらかじめ市販の界面活性剤を０．１ｗｔ％添加、攪拌した後に上記と同様の実験を行ったところ、トルク測定値は変わらないが、データの安定性が良く、素早くトルク測定部３、６の指示値を正確に読みとることができた。   Further, when 0.1 wt% of a commercially available surfactant was added to the solution 7 in advance and stirred, the same experiment as described above was performed. The torque measurement value did not change, but the stability of the data was good, and the torque measurement unit The indicated values of 3 and 6 could be read accurately.

（実施の形態２）
図２は、本発明の第２の実施の形態における油分測定装置の構成図である。９は表面に親水処理を施した親水処理平板、１１は表面に親油処理を施した親油処理平板であり、それぞれに振動仕事率を測定する仕事率測定部１０、１２が接続されている。親水処理平板９及び親油処理平板１１は、共に容器１４内に蓄えた被測定液である溶液１３に浸している。 (Embodiment 2)
FIG. 2 is a configuration diagram of an oil content measuring apparatus according to the second embodiment of the present invention. 9 is a hydrophilic treatment flat plate having a surface subjected to hydrophilic treatment, and 11 is a lipophilic treatment flat plate having a surface subjected to lipophilic treatment, to which power measurement units 10 and 12 for measuring vibration power are connected. . Both the hydrophilic treatment flat plate 9 and the oleophilic treatment flat plate 11 are immersed in a solution 13 which is a liquid to be measured stored in the container 14.

仕事率測定部１０、１２は、被測定液中で前記親水性表面を有する親水性平板９と前記親油性表面を有する親油性平板１１を、該平板の平面接線方向に所定周波数で所定振幅振動させる。被測定液の油分濃度は、親水性表面を有する平板で測定した仕事率値と、親油性表面を有する平板で測定した仕事率値とを用いた演算によってを算出する。温度計１５は溶液１３の温度を測定するために設けている。   The power measurement units 10 and 12 are configured to vibrate the hydrophilic flat plate 9 having the hydrophilic surface and the lipophilic flat plate 11 having the lipophilic surface in the liquid to be measured at a predetermined frequency in a plane tangential direction of the flat plate. Let The oil concentration of the liquid to be measured is calculated by calculation using the power value measured with a flat plate having a hydrophilic surface and the power value measured with a flat plate having a lipophilic surface. The thermometer 15 is provided for measuring the temperature of the solution 13.

親水処理平板９及び親油処理平板１１は、振動仕事率測定に誤差が出ないよう適度な剛性を有するものであれば良く、また、装置の用途上、防錆性を有する材料であることが望ましい。本実施の形態では３ｍｍ四方、厚さ０．２ｍｍのステンレスを用いたが、本発明は本材質、本形状に限定されるものではない。親水処理平板９の表面を鏡面状に研磨して親水性処理を施した。親油処理平板１１の表面にシリコーンオイルを含有する親油塗膜を塗布した。   The hydrophilically treated flat plate 9 and the oleophilic treated flat plate 11 may be any material having an appropriate rigidity so as not to cause an error in vibration power measurement, and may be a material having rust prevention for the purpose of the apparatus. desirable. In this embodiment, 3 mm square and 0.2 mm thick stainless steel is used, but the present invention is not limited to this material and shape. The surface of the hydrophilic treatment flat plate 9 was polished into a mirror surface and subjected to hydrophilic treatment. A lipophilic coating film containing silicone oil was applied to the surface of the lipophilic treatment flat plate 11.

以下、実験条件、結果について詳細に述べる。溶液１３として水道水に市販のサラダ油を所定量分散したものを用いて、仕事率測定部１０、１２により平板の振動に必要な仕事率を測定した。なお、親水処理平板９、親油処理平板１１の振動の周波数を２０Ｈｚ、振幅を１ｍｍに固定して実験を行った。また、温度計１５により溶液１３の温度を測定し、水の固有粘度の温度依存の測定値を用いて、仕事率の測定値を２５℃値に換算した。   The experimental conditions and results are described in detail below. Using a solution 13 in which a predetermined amount of commercially available salad oil was dispersed in tap water, the power required for vibration of the flat plate was measured by the power measuring units 10 and 12. The experiment was conducted with the vibration frequency of the hydrophilically treated flat plate 9 and the lipophilic treated flat plate 11 fixed at 20 Hz and the amplitude at 1 mm. Moreover, the temperature of the solution 13 was measured with the thermometer 15, and the measured value of power was converted into a 25 degreeC value using the temperature-dependent measured value of the intrinsic viscosity of water.

測定結果を表２に示す。   The measurement results are shown in Table 2.

Figure 2005127827
Figure 2005127827

なお、表２中で、仕事率の単位ｍＷはミリ・ワットを意味する。   In Table 2, the unit of work power mW means milliwatts.

表２の実験結果から、親水処理平板９による仕事率測定値（仕事率測定部１０での仕事率測定値）は油含有量にほとんど影響を受けず、親油処理平板１１による仕事率測定値（仕事率測定部１２での仕事率測定値）は油含有量に比例して値が増大するので、両測定値の比率は油含有量に比例した値となり、従って、その比率から溶液の油含有量を算出することができることが分かる。   From the experimental results shown in Table 2, the power measurement value by the hydrophilic treatment flat plate 9 (the power measurement value by the power measurement unit 10) is hardly affected by the oil content, and the power measurement value by the lipophilic treatment flat plate 11 Since the value of (work rate measurement value in the work rate measurement unit 12) increases in proportion to the oil content, the ratio between the two measurement values is proportional to the oil content. It can be seen that the content can be calculated.

また、溶液１３にあらかじめ市販の界面活性剤を０．１ｗｔ％添加、攪拌した後に上記と同様の実験を行ったところ、仕事率測定値は変わらないが、データの安定性が良く、素早く仕事率測定部１０、１２の指示値を正確に読みとることができた。   Further, when 0.1 wt% of a commercially available surfactant was added to the solution 13 in advance and stirred, the same experiment as described above was performed. The measured power value did not change, but the stability of the data was good and the work rate was fast. The indicated values of the measurement units 10 and 12 could be read accurately.

また、親水処理平板９及び親油処理平板１１の振動周波数を低周波数の３Ｈｚとした場合の実験結果を表３に示す。   Table 3 shows the experimental results when the vibration frequency of the hydrophilic treatment flat plate 9 and the lipophilic treatment flat plate 11 is set to a low frequency of 3 Hz.

Figure 2005127827
Figure 2005127827

表３から分かる様に、親水処理平板９の振動仕事率が油含有量の影響を受けて変化するために、仕事率測定値の比率から被測定液に含まれる油分を算出することが困難となった。また、親水処理平板９及び親油処理平板１１の振動周波数を高周波数の１ｋＨｚとした場合の実験結果を表４に示す。   As can be seen from Table 3, since the vibrational power of the hydrophilically treated flat plate 9 changes under the influence of the oil content, it is difficult to calculate the oil content contained in the liquid to be measured from the ratio of the power measurement values. became. Table 4 shows experimental results when the vibration frequency of the hydrophilic treatment flat plate 9 and the lipophilic treatment flat plate 11 is set to 1 kHz, which is a high frequency.

Figure 2005127827
Figure 2005127827

表４から分かるように、親油処理平板１１の振動仕事率が油含有率の影響をほとんど受けないこととなり、仕事率測定値の比率から被測定液に含まれる油分の測定が困難となった。   As can be seen from Table 4, the vibrational power of the oleophilic treated flat plate 11 is hardly affected by the oil content, making it difficult to measure the oil content in the liquid to be measured from the ratio of the measured power. .

以上のように、本発明にかかる油分測定装置は、親水性表面を有するセンサによって測定した被測定液の粘性抵抗値と、親油性表面を有するセンサによって測定した被測定液の粘性抵抗値とを比較することによって、被測定液に含まれる油分の測定を簡便に精度良く行うことができ、生活排水や工場排水の含有油分のモニタリング、また河川などの環境での含有油分のモニタリングに適用できる。   As described above, the oil content measuring apparatus according to the present invention includes the viscosity resistance value of a liquid to be measured measured by a sensor having a hydrophilic surface and the viscosity resistance value of the liquid to be measured measured by a sensor having a lipophilic surface. By comparing, the oil content contained in the liquid to be measured can be easily and accurately measured, and can be applied to monitoring the oil content of domestic wastewater and industrial wastewater, and monitoring the oil content in an environment such as a river.

本発明の実施の形態１における油分測定装置の構成図Configuration diagram of an oil content measuring apparatus according to Embodiment 1 of the present invention 本発明の実施の形態２における油分測定装置の構成図The block diagram of the oil content measuring apparatus in Embodiment 2 of this invention 従来の油分測定装置の構成図Configuration of conventional oil content measuring device

符号の説明Explanation of symbols

１ 回転軸
２ 親水処理円盤
３ トルク測定部
４ 回転軸
５ 親油処理円盤
６ トルク測定部
７ 溶液
８ 容器
９ 親水処理平板
１０ 仕事率測定部
１１ 親油処理平板
１２ 仕事率測定部
１３ 溶液
１４ 容器
１５ 温度計 DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Hydrophilic processing disk 3 Torque measuring part 4 Rotating shaft 5 Lipophilic processing disk 6 Torque measuring part 7 Solution 8 Container 9 Hydrophilic processing flat plate 10 Work rate measuring part 11 Lipophilic processing flat plate 12 Work rate measuring part 13 Solution 14 Container 15 Thermometer

Claims (8)

親水性表面を有する板と親油性表面を有する板とを備え、かつ、被測定液と前記親水性表面を有する板との間に働く粘性抵抗測定手段と、被測定液と前記親油性表面を有する板との間に働く粘性抵抗測定手段とを具備し、被測定液の親水性表面による粘性抵抗値と、被測定液の親油性表面による粘性抵抗値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置。 Viscous resistance measuring means comprising a plate having a hydrophilic surface and a plate having an oleophilic surface, and acting between the liquid to be measured and the plate having the hydrophilic surface, and the liquid to be measured and the lipophilic surface. A viscous resistance measuring means that works between the plate and the plate having the liquid to be measured by calculation using the viscosity resistance value due to the hydrophilic surface of the liquid to be measured and the viscosity resistance value due to the lipophilic surface of the liquid to be measured. An oil content measuring device that calculates oil content concentration. あらかじめ被測定液に界面活性剤を添加、攪拌した後に粘性抵抗を測定する請求項１記載の油分測定装置。 The oil content measuring apparatus according to claim 1, wherein the viscosity resistance is measured after adding a surfactant to the liquid to be measured in advance and stirring. 回転軸と同軸上に設けられた表面が親水性の円盤を被測定液中で所定回転速度で回転させるのに必要なトルク値と、回転軸と同軸上に設けられた表面が親油性の円盤を被測定液中で所定回転速度で回転させるのに必要なトルク値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置。 Torque value required to rotate a disk with a hydrophilic surface on the same axis as the rotation axis in the liquid to be measured at a predetermined rotational speed, and a disk with an oleophilic surface on the same axis as the rotation axis An oil content measuring apparatus that calculates the oil content concentration of the liquid to be measured by calculation using a torque value necessary for rotating the liquid in the liquid to be measured at a predetermined rotational speed. あらかじめ被処理液に界面活性剤を添加、攪拌した後にトルク値を測定する請求項３記載の油分測定装置。 The oil content measuring apparatus according to claim 3, wherein the torque value is measured after a surfactant is added to the liquid to be treated in advance and stirred. 親水性表面を有する平板と親油性表面を有する平板とを備え、かつ、被測定液中で前記親水性表面を有する平板を該平板の平面接線方向に所定周波数で所定振幅振動させるために必要な仕事率測定部と、被測定液中で前記親油性表面を有する平板を該平板の平面接線方向に所定周波数で所定振幅振動させるために必要な仕事率測定部とを具備し、親水性表面を有する平板で測定した仕事率値と、親油性表面を有する平板で測定した仕事率値とを用いた演算によって被測定液の油分濃度を算出する油分測定装置。 Necessary for oscillating a flat plate having a hydrophilic surface and a lipophilic surface and having the hydrophilic surface in the liquid to be measured with a predetermined frequency in a plane tangential direction of the flat plate at a predetermined frequency. A power measurement unit, and a power measurement unit required to vibrate a flat plate having the lipophilic surface in the liquid to be measured at a predetermined frequency in a plane tangential direction of the flat plate, and having a hydrophilic surface. An oil content measuring apparatus that calculates an oil content concentration of a liquid to be measured by a calculation using a power value measured by a flat plate having a power and a power value measured by a flat plate having an oleophilic surface. 平板を振動させる周波数を５Ｈｚ以上５００Ｈｚ以下とする請求項５記載の油分測定装置。 The oil content measuring apparatus according to claim 5, wherein a frequency for vibrating the flat plate is 5 Hz or more and 500 Hz or less. あらかじめ被処理液に界面活性剤を添加、攪拌した後に仕事率値を測定する請求項５または６記載の油分測定装置。 The oil content measuring apparatus according to claim 5 or 6, wherein a power value is measured after a surfactant is added to the liquid to be treated in advance and stirred. 被処理液の温度検知手段を設け、測定によって得た粘性抵抗値、トルク値、または仕事率値を温度補償換算した後の換算値の演算によって被測定液の油分濃度を算出する請求項１から７のいずれかに記載の油分測定装置。 A temperature detection means for the liquid to be treated is provided, and the oil content concentration of the liquid to be measured is calculated by calculating the converted value after the temperature resistance conversion of the viscous resistance value, torque value, or power value obtained by measurement is performed. The oil content measuring apparatus according to any one of 7.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010002356A (en) * 2008-06-23 2010-01-07 National Maritime Research Institute Method, apparatus and program for measuring difference in acting force
CN104181080A (en) * 2014-08-28 2014-12-03 湖南中科富邦科技有限责任公司 Oily water oil content real-time monitoring method and monitoring device thereof
JP5816163B2 (en) * 2010-02-17 2015-11-18 京都電子工業株式会社 Viscosity measuring method and viscosity measuring apparatus
US9726603B2 (en) 2014-11-11 2017-08-08 Samsung Electronics Co., Ltd. Grating pattern element, target material measuring apparatus, and target material measuring method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010002356A (en) * 2008-06-23 2010-01-07 National Maritime Research Institute Method, apparatus and program for measuring difference in acting force
JP5816163B2 (en) * 2010-02-17 2015-11-18 京都電子工業株式会社 Viscosity measuring method and viscosity measuring apparatus
CN104181080A (en) * 2014-08-28 2014-12-03 湖南中科富邦科技有限责任公司 Oily water oil content real-time monitoring method and monitoring device thereof
CN104181080B (en) * 2014-08-28 2016-08-24 湖南中科富邦科技有限责任公司 A kind of sump oil water oil-containing method of real-time and monitoring device thereof
US9726603B2 (en) 2014-11-11 2017-08-08 Samsung Electronics Co., Ltd. Grating pattern element, target material measuring apparatus, and target material measuring method

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