JP2012047633A - Preprocessing apparatus for online type sample analyzer and method of controlling preprocessing apparatus for online type sample analyzer - Google Patents

Preprocessing apparatus for online type sample analyzer and method of controlling preprocessing apparatus for online type sample analyzer Download PDF

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JP2012047633A
JP2012047633A JP2010190954A JP2010190954A JP2012047633A JP 2012047633 A JP2012047633 A JP 2012047633A JP 2010190954 A JP2010190954 A JP 2010190954A JP 2010190954 A JP2010190954 A JP 2010190954A JP 2012047633 A JP2012047633 A JP 2012047633A
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switching valve
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sample analyzer
concentration
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JP5645551B2 (en
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Jun Otsu
純 大津
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Toshiba Plant Systems and Services Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a preprocessing apparatus for an online type sample analyzer and a method of controlling the preprocessing apparatus for the online type sample analyzer in which air bubbles and clad can be efficiently discharged without stopping continuous operation, and radioactive clad is not pooled.SOLUTION: A preprocessing apparatus includes a photosensor, an electromagnet, an ultrasonic wave generator, a first switching valve, a second switching valve, a first pump, a second pump and a controller. When driving air bubbles out and discharging clad, the controller changes over the first switching valve and the second switching valve so as to shut off a second sample water passage via a concentration column and to form a first sample water passage for backflow of desalinated water, stops the electromagnet, and starts the ultrasonic wave generator.

Description

本発明の一実施形態はサンプルを連続的に自動分析するオンライン型サンプル分析装置の前処理装置及びオンライン型サンプル分析装置の前処理装置の制御方法に関する。   One embodiment of the present invention relates to a pretreatment device for an on-line type sample analyzer that continuously and automatically analyzes a sample, and a control method for the pretreatment device of an on-line type sample analyzer.

例えば原子力発電所や火力発電所においては系統水の分析を連続的に自動分析するオンライン型サンプル分析装置が使用される。   For example, in a nuclear power plant and a thermal power plant, an on-line sample analyzer that automatically analyzes the analysis of system water is used.

特開２００３−２０２３３１号公報JP 2003-202331 A

サンプル分析装置がイオンクロマトグラフの場合には、系統水中に含まれる気泡や不溶解性の不純物はサンプル分析装置の分析機能にとって障害となる。   When the sample analyzer is an ion chromatograph, bubbles and insoluble impurities contained in the system water hinder the analysis function of the sample analyzer.

具体的には、サンプル水の中に気泡が含まれていると定量サンプルポンプが送液不能となり、サンプル分析装置が停止する。サンプル分析装置を再起動するためには気泡抜きの作業が必要となり、自動連続運転が中断される。   Specifically, if the sample water contains bubbles, the quantitative sample pump cannot be fed and the sample analyzer stops. In order to restart the sample analyzer, it is necessary to remove bubbles, and the automatic continuous operation is interrupted.

デガッサはサンプル中に溶解している溶存ガスの飽和による発泡防止に対しては有効であるが、サンプル分析装置のプロセス配管及びサンプル分析装置に滞留して不定期に流れ込む気泡に対しては効果がない。   The degasser is effective in preventing foaming due to the saturation of dissolved gas dissolved in the sample, but it is effective for bubbles that stay in the process piping of the sample analyzer and the sample analyzer and flow in irregularly. Absent.

また、ＢＷＲ型原子力発電所の一次系の系統水には酸化鉄を主成分とする不溶解性の不純物が含まれている。このクラッドと呼ばれる不純物はＣｏ６０を含むため放射能を有する。   Further, the primary system water of the BWR nuclear power plant contains insoluble impurities mainly composed of iron oxide. This impurity called cladding has radioactivity because it contains Co60.

ＢＷＲ型原子力発電所の原子炉水用の従来のオンライン型イオンクロマトグラフの前処理装置はサンプリングラインにフィルタを有し、このフィルタがクラッドを捕捉する。クラッドがフィルタに蓄積するとフィルタの放射能が高くなり、フィルタ交換作業時の作業員の被曝が問題となっている。   A conventional on-line ion chromatograph pretreatment device for reactor water of a BWR nuclear power plant has a filter in the sampling line, and this filter captures the cladding. When the clad accumulates in the filter, the radioactivity of the filter increases, and the exposure of workers during filter replacement work becomes a problem.

本発明の一実施形態は、サンプル水を導通する第１のサンプル水流路と、第１のサンプル水流路に接続する第１の切換弁と、第１の切換弁に接続する脱塩水供給装置と、第１の切換弁に接続する第１のポンプと、第１のポンプと第１の切換弁に接続する第２の切換弁と、第２の切換弁に接続する濃縮カラムと、第２の切換弁に接続する第２のポンプと、サンプル濃縮時に濃縮カラムにサンプル水が導通するように第１の切換弁と第２の切換弁とを制御し、洗浄時に濃縮カラムを遮断し、脱塩水供給装置から脱塩水を逆流させるように第１の切換弁と第２の切換弁とを制御する制御部と、を備えるオンライン型サンプル分析装置の前処理装置を提供する。   One embodiment of the present invention includes a first sample water channel that conducts sample water, a first switching valve that is connected to the first sample water channel, and a desalted water supply device that is connected to the first switching valve. A first pump connected to the first switching valve, a second switching valve connected to the first pump and the first switching valve, a concentration column connected to the second switching valve, and a second The second pump connected to the switching valve, and the first switching valve and the second switching valve are controlled so that the sample water is conducted to the concentration column when the sample is concentrated, and the concentration column is shut off during the washing, and the desalted water There is provided a pretreatment device for an on-line type sample analyzer, comprising: a control unit that controls a first switching valve and a second switching valve so that desalted water flows backward from a supply device.

前処理装置の構成を模式的に示した図である。It is the figure which showed the structure of the pre-processing apparatus typically. サンプル濃縮時の前処理装置の様子を示す図である。It is a figure which shows the mode of the pre-processing apparatus at the time of sample concentration. 洗浄、気泡追出し、イオン分析開始時の前処理装置の様子を示す図である。It is a figure which shows the mode of the pre-processing apparatus at the time of washing | cleaning, bubble extraction, and ion analysis start. イオン分析、サンプル取込待機時の前処理装置の様子を示す図である。It is a figure which shows the mode of the pre-processing apparatus at the time of ion analysis and sample taking-in standby. エアトラップの構成を示す側面断面図である。It is side surface sectional drawing which shows the structure of an air trap. 切換弁のポジションを模式的にあらわした図である。It is the figure which represented the position of the switching valve typically. 前処理装置の構成を示すブロック図である。It is a block diagram which shows the structure of a pre-processing apparatus. 制御部による各部位の制御方法を示す図である。It is a figure which shows the control method of each site | part by a control part.

以下、本発明の一実施形態のオンライン型サンプル分析装置の前処理装置（以下、前処理装置と呼ぶ。）を、図面を用いて詳細に説明する。   Hereinafter, a pretreatment apparatus (hereinafter referred to as a pretreatment apparatus) of an on-line sample analyzer according to an embodiment of the present invention will be described in detail with reference to the drawings.

（前処理装置の構成）
図１は、本実施形態の前処理装置の構成を模式的に示した図である。図１に示すように、前処理装置はサンプル水を導通する第１のサンプル水流路１１と、気泡を補足するエアトラップ１２と、エアトラップ１２に設置される発光素子１３Ａ及び光センサ１３Ｂと、エアトラップ１２の第１のサンプル水流路１１下流にコイルを描くコイル部１１Ａと、を備える。 (Configuration of pre-processing equipment)
FIG. 1 is a diagram schematically showing the configuration of the pretreatment apparatus of this embodiment. As shown in FIG. 1, the pretreatment apparatus includes a first sample water channel 11 that conducts sample water, an air trap 12 that captures bubbles, a light emitting element 13A and an optical sensor 13B that are installed in the air trap 12, A coil portion 11A that draws a coil downstream of the first sample water flow path 11 of the air trap 12.

前処理装置はさらに、コイル部１１Ａに設けられる電磁石１４及び超音波発生装置１５と、コイル部１１Ａの第１のサンプル水流路１１下流に設けられる補助フィルタ１６と、補助フィルタ１６の第１のサンプル水流路１１下流に設けられる第１の切換弁３１と、第１の切換弁３１の第１のサンプル水流路１１下流に設けられる第１のポンプ１８と、脱塩水供給装置１７と、を備える。   The pretreatment device further includes an electromagnet 14 and an ultrasonic generator 15 provided in the coil portion 11A, an auxiliary filter 16 provided downstream of the first sample water flow path 11 of the coil portion 11A, and a first sample of the auxiliary filter 16. A first switching valve 31 provided downstream of the water flow path 11, a first pump 18 provided downstream of the first sample water flow path 11 of the first switching valve 31, and a desalted water supply device 17 are provided.

前処理装置はさらに、第２のサンプル水流路２１と、この第２のサンプル水流路に設けられる第２のポンプ２２と、第２のポンプ２２の第２のサンプル水流路２１下流に設けられる第２の切換弁３２と、第２の切換弁３２の第２のサンプル水流路２１下流に設けられる濃縮カラム２３と、濃縮カラム２３の第２の切換弁３２を介した第２のサンプル水流路２１下流に設けられる分離カラム２４と、を備える。   The pretreatment device further includes a second sample water channel 21, a second pump 22 provided in the second sample water channel, and a second sample water channel 21 provided downstream of the second pump 22. 2 switching valve 32, concentration column 23 provided downstream of second sample water channel 21 of second switching valve 32, and second sample water channel 21 via second switching valve 32 of concentration column 23. And a separation column 24 provided downstream.

前処理装置はさらに、光センサ１３Ｂからの出力を入力し、電磁石１４、超音波発生装置１５、第１の切換弁３１、第２の切換弁３２、及び第１のポンプ１８の動作を制御する制御部を有する。   The preprocessing device further receives the output from the optical sensor 13B and controls the operations of the electromagnet 14, the ultrasonic generator 15, the first switching valve 31, the second switching valve 32, and the first pump 18. It has a control part.

第１の切換弁３１及び第２の切換弁３２は六方弁を用いることができる。六方弁は、反時計回りに［１］乃至［６］の６個の接続孔と、この６個の接続孔を一つ置きに接続する溝を有する。   As the first switching valve 31 and the second switching valve 32, a six-way valve can be used. The six-way valve has six connection holes [1] to [6] counterclockwise, and a groove for connecting every other six connection holes.

六方弁はポジション１では［１］と［２］、［３］と［４］、［５］と［６］の接続孔を導通し、他の組み合わせは導通させない。また、六方弁はポジション２では［２］と［３］、［４］と［５］、［６］と［１］の接続孔を導通し、他の組み合わせは導通させない。   In the position 1, the hexagonal valve conducts the connection holes [1] and [2], [3] and [4], [5] and [6], and does not conduct other combinations. In the position 2, the hexagonal valve conducts the connection holes [2] and [3], [4] and [5], and [6] and [1], and does not conduct the other combinations.

補助フィルタ１６下流の第１のサンプル水流路１１は第１の切換弁３１の［１］の接続孔に接続される。第１のポンプ１８に流入する第１のサンプル水流路１１は第１の切換弁３１の［２］の接続孔に接続される。脱塩水供給装置１７は第１の切換弁３１の［３］の接続孔に接続される。排水路は第１の切換弁３１の［５］の接続孔に接続される。   The first sample water flow path 11 downstream of the auxiliary filter 16 is connected to the [1] connection hole of the first switching valve 31. The first sample water flow path 11 flowing into the first pump 18 is connected to the connection hole [2] of the first switching valve 31. The desalted water supply device 17 is connected to the connection hole [3] of the first switching valve 31. The drainage channel is connected to the connection hole [5] of the first switching valve 31.

第１の切換弁３１の［６］の接続孔は第２の切換弁３２の［６］の接続孔に接続される。   The connection hole [6] of the first switching valve 31 is connected to the connection hole [6] of the second switching valve 32.

第１のポンプ１８から流出する第１のサンプル水流路１１は第２の切換弁３２の［１］の接続孔に接続される。濃縮カラム２３の一端は第２の切換弁３２の［２］の接続孔に、他端は第２の切換弁３２の［５］の接続孔に接続される。   The first sample water flow path 11 flowing out from the first pump 18 is connected to the connection hole [1] of the second switching valve 32. One end of the concentration column 23 is connected to the [2] connection hole of the second switching valve 32, and the other end is connected to the [5] connection hole of the second switching valve 32.

分離カラム２４の流入側は第２の切換弁３２の［３］の接続孔に接続される。第２のポンプ２２から流出する第２のサンプル水流路２１は第２の切換弁３２の［４］の接続孔に接続される。   The inflow side of the separation column 24 is connected to the connection hole [3] of the second switching valve 32. The second sample water flow path 21 flowing out from the second pump 22 is connected to the connection hole [4] of the second switching valve 32.

（前処理装置の動作）
（クラッドの除去）
クラッドにはマグネタイト（Ｆｅ３Ｏ４）、マグヘマタイト（γ−Ｆｅ２Ｏ３）、ヘマタイト（α−Ｆｅ２Ｏ３）が含まれる。マグネタイト（Ｆｅ３Ｏ４）は９２ｅｍｕ／ｇ、マグヘマタイト（γ−Ｆｅ２Ｏ３）は７４ｅｍｕ／ｇ、ヘマタイト（α−Ｆｅ２Ｏ３）は０．４ｅｍｕ／ｇの磁力を有し、電磁石１４の磁力に引き寄せられる。 (Operation of pre-processing equipment)
(Cladding removal)
The clad includes magnetite (Fe 3 O 4 ), maghemite (γ-Fe 2 O 3 ), and hematite (α-Fe 2 O 3 ). Magnetite (Fe 3 O 4 ) has a magnetic force of 92 emu / g, maghematite (γ-Fe 2 O 3 ) has a magnetic force of 74 emu / g, and hematite (α-Fe 2 O 3 ) has a magnetic force of 0.4 emu / g. Attracted by the magnetic force.

コイル部１１Ａをサンプル水が通過するとき、電磁石１４は磁力によってクラッドをコイル部１１Ａの内壁に捕捉する。   When the sample water passes through the coil portion 11A, the electromagnet 14 captures the clad on the inner wall of the coil portion 11A by magnetic force.

捕捉されたクラッドは、洗浄時に電磁石１４がＯＦＦされて磁力を停止され、超音波発生装置１５がＯＮされて発生された超音波によりコイル部１１Ａの内壁から剥離され、洗浄される。   The trapped clad is peeled off from the inner wall of the coil portion 11A and cleaned by the ultrasonic wave generated by turning off the ultrasonic generator 15 and turning off the magnetic force when the electromagnet 14 is turned off.

（サンプルブロー）
図１は、サンプルブロー時の前処理装置の様子を示す図である。前処理装置の系統内の水をサンプル水によって置換するため、前処理装置は一定量送液する。 (Sample blow)
FIG. 1 is a diagram illustrating a state of a pretreatment apparatus during sample blowing. In order to replace the water in the system of the pretreatment device with the sample water, the pretreatment device delivers a certain amount of liquid.

この時、制御部は、電磁石１４をＯＮにして磁力を発生させ、超音波発生装置１５をＯＦＦにして超音波の発生を停止させる。制御部は第１の切換弁３１をポジション１に、第２の切換弁３２をポジション２に切り替える。制御部は第１のポンプ１８と、第２のポンプ２２を運転させる。   At this time, the control unit turns on the electromagnet 14 to generate magnetic force, and turns off the ultrasonic generator 15 to stop the generation of ultrasonic waves. The control unit switches the first switching valve 31 to position 1 and the second switching valve 32 to position 2. The control unit operates the first pump 18 and the second pump 22.

第１のサンプル水流路１１は第１の切換弁３１、第２の切換弁３２を経由して排水する。第１のサンプル水流路１１は濃縮カラム２３と遮断される。第２のサンプル水流路２１は第１のサンプル水流路１１と遮断される。   The first sample water channel 11 drains via the first switching valve 31 and the second switching valve 32. The first sample water flow path 11 is disconnected from the concentration column 23. The second sample water channel 21 is blocked from the first sample water channel 11.

サンプル水は、エアトラップ１２、コイル部１１Ａ、補助フィルタ１６、第１の切換弁３１の［１］の接続孔、第１の切換弁３１の［２］の接続孔、第１のポンプ１８、第２の切換弁３２の［１］の接続孔、第２の切換弁３２の［６］の接続孔、第１の切換弁３１の［６］の接続孔、第１の切換弁３１の［５］の接続孔、を経て排水される。   The sample water includes the air trap 12, the coil portion 11A, the auxiliary filter 16, the [1] connection hole of the first switching valve 31, the [2] connection hole of the first switching valve 31, the first pump 18, [1] connection hole of the second switching valve 32, [6] connection hole of the second switching valve 32, [6] connection hole of the first switching valve 31, and [[ 5] is drained through the connection hole.

また、溶離液は第２のポンプ２２、第２の切換弁３２の［４］の接続孔、第２の切換弁３２の［５］の接続孔、濃縮カラム２３、第２の切換弁３２の［２］の接続孔、第２の切換弁３２の［３］の接続孔、を経て分離カラム２４に達する。   The eluent is the second pump 22, the connection hole [4] of the second switching valve 32, the connection hole [5] of the second switching valve 32, the concentration column 23, and the second switching valve 32. The separation column 24 is reached through the connection hole [2] and the connection hole [3] of the second switching valve 32.

（サンプル濃縮）
図２は、サンプル濃縮時の前処理装置の様子を示す図である。前処理装置は規定量のサンプル水を濃縮カラム２３に送液する。濃縮カラム２３によりイオンが分離捕捉される。 (Sample concentration)
FIG. 2 is a diagram illustrating a state of the pretreatment apparatus during sample concentration. The pretreatment device sends a specified amount of sample water to the concentration column 23. Ions are separated and captured by the concentration column 23.

この時、制御部は、電磁石１４をＯＮにして磁力を発生させ、超音波発生装置１５をＯＦＦにして超音波の発生を停止させる。制御部は第１の切換弁３１をポジション１に、第２の切換弁３２をポジション１に切り替える。制御部は第１のポンプ１８と、第２のポンプ２２を運転させる。   At this time, the control unit turns on the electromagnet 14 to generate magnetic force, and turns off the ultrasonic generator 15 to stop the generation of ultrasonic waves. The control unit switches the first switching valve 31 to position 1 and the second switching valve 32 to position 1. The control unit operates the first pump 18 and the second pump 22.

サンプル水は、エアトラップ１２、コイル部１１Ａ、補助フィルタ１６、第１の切換弁３１の［１］の接続孔、第１の切換弁３１の［２］の接続孔、第１のポンプ１８、第２の切換弁３２の［１］の接続孔、第２の切換弁３２の［２］の接続孔、濃縮カラム２３、第２の切換弁３２の［５］の接続孔、第２の切換弁３２の［６］の接続孔、第１の切換弁３１の［６］の接続孔、第１の切換弁３１の［５］の接続孔、を経て排水される。   The sample water includes the air trap 12, the coil portion 11A, the auxiliary filter 16, the [1] connection hole of the first switching valve 31, the [2] connection hole of the first switching valve 31, the first pump 18, [1] connection hole of the second switching valve 32, [2] connection hole of the second switching valve 32, concentration column 23, [5] connection hole of the second switching valve 32, second switching It drains through the connection hole [6] of the valve 32, the connection hole [6] of the first switching valve 31, and the connection hole [5] of the first switching valve 31.

また、溶離液は第２のポンプ２２、第２の切換弁３２の［４］の接続孔、第２の切換弁３２の［３］の接続孔、を経て分離カラム２４に達する。第２のサンプル水流路２１は濃縮カラム２３と遮断される。   The eluent reaches the separation column 24 through the second pump 22, the connection hole [4] of the second switching valve 32, and the connection hole [3] of the second switching valve 32. The second sample water channel 21 is blocked from the concentration column 23.

（洗浄、気泡追出し、イオン分析開始）
図３は、洗浄、気泡追出し、イオン分析開始時の前処理装置の様子を示す図である。前処理装置は洗浄に必要な分量の脱塩水を逆送液し、気泡を追い出すとともにコイル部１１Ａを洗浄する。制御部は光センサ１３Ｂの出力に基づいて気泡がエアトラップ１２に捕捉されたと判定したとき、この気泡追出し動作を行う。 (Washing, expelling bubbles, starting ion analysis)
FIG. 3 is a diagram showing a state of the pretreatment device at the start of cleaning, bubble expulsion, and ion analysis. The pretreatment device feeds back an amount of demineralized water necessary for cleaning, expels bubbles and cleans the coil portion 11A. When the control unit determines that the air bubble 12 has been captured by the air trap 12 based on the output of the optical sensor 13B, the control unit performs the bubble ejection operation.

この時、制御部は、電磁石１４をＯＦＦにして磁力を停止させ、超音波発生装置１５をＯＮにして超音波を発生させる。制御部は第１の切換弁３１をポジション２に、第２の切換弁３２をポジション２に切り替える。制御部は第１のポンプ１８と、第２のポンプ２２を運転させる。   At this time, the control unit turns off the electromagnet 14 to stop the magnetic force, and turns on the ultrasonic generator 15 to generate ultrasonic waves. The control unit switches the first switching valve 31 to position 2 and the second switching valve 32 to position 2. The control unit operates the first pump 18 and the second pump 22.

脱塩水は、脱塩水供給装置１７、第１の切換弁３１の［３］の接続孔、第１の切換弁３１の［２］の接続孔、第１のポンプ１８、第２の切換弁３２の［１］の接続孔、第２の切換弁３２の［６］の接続孔、第１の切換弁３１の［６］の接続孔、第１の切換弁３１の［１］の接続孔、補助フィルタ１６、コイル部１１Ａ、エアトラップ１２を経て排出される。脱塩水は第１のサンプル水流路１１を逆流する。第１のサンプル水流路１１は濃縮カラム２３と遮断される。   The desalted water is supplied from the desalted water supply device 17, the connection hole [3] of the first switching valve 31, the connection hole [2] of the first switching valve 31, the first pump 18, and the second switching valve 32. [1] connection hole, second switching valve 32 [6] connection hole, first switching valve 31 [6] connection hole, first switching valve 31 [1] connection hole, It is discharged through the auxiliary filter 16, the coil part 11A, and the air trap 12. The desalted water flows backward through the first sample water channel 11. The first sample water flow path 11 is disconnected from the concentration column 23.

また、溶離液は第２のポンプ２２、第２の切換弁３２の［４］の接続孔、第２の切換弁３２の［５］の接続孔、濃縮カラム２３、第２の切換弁３２の［２］の接続孔、第２の切換弁３２の［３］の接続孔、を経て分離カラム２４に達する。   The eluent is the second pump 22, the connection hole [4] of the second switching valve 32, the connection hole [5] of the second switching valve 32, the concentration column 23, and the second switching valve 32. The separation column 24 is reached through the connection hole [2] and the connection hole [3] of the second switching valve 32.

（イオン分析、サンプル取込待機）
図４は、イオン分析、サンプル取込待機時の前処理装置の様子を示す図である。前処理装置は次工程まで待機する。 (Ion analysis, sample acquisition standby)
FIG. 4 is a diagram showing a state of the pretreatment apparatus during standby for ion analysis and sample taking. The pretreatment device waits until the next process.

この時、制御部は、電磁石１４をＯＦＦにして磁力を停止させ、超音波発生装置１５をＯＦＦにして超音波の発生を停止させる。制御部は第１の切換弁３１をポジション１に、第２の切換弁３２をポジション２に切り替える。制御部は第１のポンプ１８を停止させ、第２のポンプ２２を運転させる。   At this time, the control unit turns off the electromagnet 14 to stop the magnetic force, and turns off the ultrasonic generator 15 to stop the generation of ultrasonic waves. The control unit switches the first switching valve 31 to position 1 and the second switching valve 32 to position 2. The control unit stops the first pump 18 and operates the second pump 22.

サンプル水は、エアトラップ１２、コイル部１１Ａ、補助フィルタ１６、第１の切換弁３１の［１］の接続孔、第１の切換弁３１の［２］の接続孔、第１のポンプ１８、第２の切換弁３２の［１］の接続孔、第２の切換弁３２の［６］の接続孔、第１の切換弁３１の［６］の接続孔、第１の切換弁３１の［５］の接続孔、を経て排水される経路が形成されるが、第１のポンプ１８が停止されているため、流水しない。   The sample water includes the air trap 12, the coil portion 11A, the auxiliary filter 16, the [1] connection hole of the first switching valve 31, the [2] connection hole of the first switching valve 31, the first pump 18, [1] connection hole of the second switching valve 32, [6] connection hole of the second switching valve 32, [6] connection hole of the first switching valve 31, and [[ 5], the drainage path is formed, but the first pump 18 is stopped, so no water flows.

また、溶離液は第２のポンプ２２、第２の切換弁３２の［４］の接続孔、第２の切換弁３２の［５］の接続孔、濃縮カラム２３、第２の切換弁３２の［２］の接続孔、第２の切換弁３２の［３］の接続孔、を経て分離カラム２４に達する。   The eluent is the second pump 22, the connection hole [4] of the second switching valve 32, the connection hole [5] of the second switching valve 32, the concentration column 23, and the second switching valve 32. The separation column 24 is reached through the connection hole [2] and the connection hole [3] of the second switching valve 32.

（エアトラップ１２の構成）
図５は、エアトラップ１２の構成を示す側面断面図である。図５に示すように、エアトラップ１２は第１のサンプル水流路１１の内径よりも大きい内径を有する。エアトラップ１２は流入孔１２Ａを上に、流出孔１２Ｂを下に設置される。エアトラップ１２は、ガラス、樹脂などの透光性素材によって形成される。 (Configuration of air trap 12)
FIG. 5 is a side sectional view showing the configuration of the air trap 12. As shown in FIG. 5, the air trap 12 has an inner diameter larger than the inner diameter of the first sample water channel 11. The air trap 12 is installed with the inflow hole 12A up and the outflow hole 12B down. The air trap 12 is formed of a translucent material such as glass or resin.

レーザー光等の光を発する発光素子１３Ａと光センサ１３Ｂとはエアトラップ１２を挟み、対向する位置に配置される。   The light emitting element 13 </ b> A that emits light such as laser light and the optical sensor 13 </ b> B are arranged at positions facing each other with the air trap 12 interposed therebetween.

気泡がエアトラップ１２に捕捉された場合、光センサ１３Ｂの受光量が変化する。従って、制御部は光センサ１３Ｂの出力に基づいて気泡が補足されたかを判定することが可能となる。   When bubbles are trapped in the air trap 12, the amount of light received by the optical sensor 13B changes. Therefore, the control unit can determine whether or not the bubbles are captured based on the output of the optical sensor 13B.

（前処理装置の制御）
図６は、切換弁のポジションを模式的にあらわした図である。図６（Ａ）はポジション１を、図６（Ｂ）はポジション２を示す。実線は導通を、破線は遮断を示す。 (Control of pretreatment equipment)
FIG. 6 is a diagram schematically showing the position of the switching valve. 6A shows position 1 and FIG. 6B shows position 2. A solid line indicates conduction, and a broken line indicates interruption.

図７は、前処理装置の構成を示すブロック図である。図７に示すように、前処理装置は、制御部であるＣＰＵ７１を有する。ＣＰＵ７１は、ＲＯＭ・ＲＡＭなどの記憶装置７２と、光センサ１３Ｂと、電磁石１４と、超音波発生装置１５と、第１の切換弁３１と、第２の切換弁３２と、第１のポンプ１８と、第２のポンプ２２と、に接続する。   FIG. 7 is a block diagram showing the configuration of the preprocessing device. As illustrated in FIG. 7, the preprocessing device includes a CPU 71 that is a control unit. The CPU 71 includes a storage device 72 such as a ROM / RAM, an optical sensor 13B, an electromagnet 14, an ultrasonic generator 15, a first switching valve 31, a second switching valve 32, and a first pump 18. And the second pump 22.

図８は、制御部による各部位の制御方法を示す図である。図８に示すように、制御部は電磁石１４と、超音波発生装置１５と、第１の切換弁３１と、第２の切換弁３２と、第１のポンプ１８と、第２のポンプ２２と、を制御する。   FIG. 8 is a diagram illustrating a method of controlling each part by the control unit. As shown in FIG. 8, the control unit includes the electromagnet 14, the ultrasonic generator 15, the first switching valve 31, the second switching valve 32, the first pump 18, and the second pump 22. , Control.

（本実施形態の効果）
以上述べたように、本実施形態の前処理装置は、光センサ１３Ｂと、電磁石１４と、超音波発生装置１５と、第１の切換弁３１と、第２の切換弁３２と、第１のポンプ１８と、第２のポンプ２２と、制御部と、を備え、制御部は、気泡を追出し、クラッドを排出するとき、濃縮カラム２３を介する第２のサンプル水流路２１を遮断し、脱塩水を逆流させる第１のサンプル水流路１１を形成するように第１の切換弁３１と、第２の切換弁３２と、を切り替え、電磁石１４を停止させ、超音波発生装置１５を動作させる。 (Effect of this embodiment)
As described above, the pretreatment device of this embodiment includes the optical sensor 13B, the electromagnet 14, the ultrasonic generator 15, the first switching valve 31, the second switching valve 32, and the first switching valve. The pump 18, the second pump 22, and a control unit are provided, and the control unit shuts off the second sample water flow path 21 through the concentration column 23 when expelling bubbles and discharging the clad, The first switching valve 31 and the second switching valve 32 are switched so as to form the first sample water flow path 11 that causes the reverse flow to flow, the electromagnet 14 is stopped, and the ultrasonic generator 15 is operated.

従って、連続運転を止めることなく、気泡とクラッドを効率的に排出することが可能となるという効果がある。また、放射性のクラッドをため込むことがないため、作業員が被曝することがなくなるという効果がある。   Therefore, there is an effect that the bubbles and the clad can be efficiently discharged without stopping the continuous operation. Moreover, since there is no accumulation of radioactive cladding, there is an effect that the worker is not exposed.

１１：第１のサンプル水流路、
１２：エアトラップ、
１３Ｂ：光センサ、
１４：電磁石、
１５：超音波発生装置、
１７：脱塩水供給装置、
１８：第１のポンプ、
２１：第２のサンプル水流路、
２２：第２のポンプ、
３１：第１の切換弁、
３２：第２の切換弁。 11: 1st sample water flow path,
12: Air trap,
13B: optical sensor,
14: electromagnet,
15: Ultrasonic generator,
17: Demineralized water supply device,
18: First pump,
21: second sample water flow path,
22: Second pump,
31: First switching valve,
32: Second switching valve.

Claims (6)

サンプル水を導通する第１のサンプル水流路と、
前記第１のサンプル水流路に接続する第１の切換弁と、
前記第１の切換弁に接続する脱塩水供給装置と、
前記第１の切換弁に接続する第１のポンプと、
前記第１のポンプと前記第１の切換弁に接続する第２の切換弁と、
前記第２の切換弁に接続する濃縮カラムと、
前記第２の切換弁に接続する第２のポンプと、
サンプル濃縮時に前記濃縮カラムに前記サンプル水が導通するように前記第１の切換弁と前記第２の切換弁とを制御し、洗浄時に前記濃縮カラムを遮断し、前記脱塩水供給装置から脱塩水を逆流させるように前記第１の切換弁と前記第２の切換弁とを制御する制御部と、
を備えるオンライン型サンプル分析装置の前処理装置。 A first sample water flow path for conducting sample water;
A first switching valve connected to the first sample water flow path;
A demineralized water supply device connected to the first switching valve;
A first pump connected to the first switching valve;
A second switching valve connected to the first pump and the first switching valve;
A concentration column connected to the second switching valve;
A second pump connected to the second switching valve;
The first switching valve and the second switching valve are controlled so that the sample water is conducted to the concentration column during sample concentration, the concentration column is shut off during washing, and demineralized water is supplied from the demineralized water supply device. A control unit for controlling the first switching valve and the second switching valve so as to reverse flow
A pretreatment device for an on-line sample analyzer. 前記第１の切換弁の前記第１のサンプル水流路上流に設けられる電磁石及び超音波発生装置をさらに備え、
前記制御部は、
サンプル濃縮時に、前記電磁石を作動させるとともに前記超音波発生装置を停止させ、前記濃縮カラムに前記サンプル水が導通するように前記第１の切換弁と前記第２の切換弁とを制御し、洗浄時に前記電磁石を停止させるとともに前記超音波発生装置を作動させ、前記濃縮カラムを遮断し、前記脱塩水供給装置から前記脱塩水を逆流させるように前記第１の切換弁と前記第２の切換弁とを制御する
ことを特徴とする請求項１記載のオンライン型サンプル分析装置の前処理装置。 An electromagnet and an ultrasonic generator provided upstream of the first sample water flow path of the first switching valve;
The controller is
At the time of sample concentration, the electromagnet is operated and the ultrasonic generator is stopped, and the first switching valve and the second switching valve are controlled so that the sample water is conducted to the concentration column, and washing is performed. Sometimes the electromagnet is stopped and the ultrasonic generator is activated, the concentration column is shut off, and the first and second switching valves are configured to reverse the desalted water from the desalted water supply device. The on-line sample analyzer pre-processing apparatus according to claim 1. 前記第１の切換弁の前記第１のサンプル水流路上流に設けられ、気泡を捕捉するエアトラップと、
前記エアトラップに設けられ、気泡の有無を検知する光センサと、をさらに備え、
前記制御部は、
前記光センサの出力に基づいてエアトラップ内に気泡が捕捉されたと判定した場合、前記濃縮カラムを遮断し、前記脱塩水供給装置から前記脱塩水を逆流させるように前記第１の切換弁と前記第２の切換弁とを制御する
ことを特徴とする請求項１記載のオンライン型サンプル分析装置の前処理装置。 An air trap that is provided upstream of the first sample water flow path of the first switching valve and captures bubbles;
An optical sensor provided in the air trap for detecting the presence or absence of bubbles,
The controller is
When it is determined that air bubbles are trapped in the air trap based on the output of the optical sensor, the concentration valve is shut off, and the first switching valve and the first switching valve are configured to reversely flow the desalted water from the desalted water supply device. The pre-processing apparatus for an on-line type sample analyzer according to claim 1, wherein the second switching valve is controlled. 前記第１の切換弁の前記第１のサンプル水流路上流に設けられ、気泡を捕捉するエアトラップと、
前記エアトラップに設けられ、気泡の有無を検知する光センサと、をさらに備え、
前記制御部は、
前記光センサの出力に基づいてエアトラップ内に気泡が捕捉されたと判定した場合、前記電磁石を停止させるとともに前記超音波発生装置を作動させ、前記濃縮カラムを遮断し、前記脱塩水供給装置から前記脱塩水を逆流させるように前記第１の切換弁と前記第２の切換弁とを制御する
ことを特徴とする請求項２記載のオンライン型サンプル分析装置の前処理装置。 An air trap that is provided upstream of the first sample water flow path of the first switching valve and captures bubbles;
An optical sensor provided in the air trap for detecting the presence or absence of bubbles,
The controller is
When it is determined that air bubbles are trapped in the air trap based on the output of the optical sensor, the electromagnet is stopped and the ultrasonic generator is activated, the concentration column is shut off, and the desalted water supply device 3. The pretreatment device for an on-line type sample analyzer according to claim 2, wherein the first switching valve and the second switching valve are controlled so as to make the desalted water flow backward. 前記第１の切換弁及び前記第２の切換弁の少なくとも一方が六方弁であることを特徴とする請求項１又は請求項２に記載のオンライン型サンプル分析装置の前処理装置。   The pretreatment apparatus for an on-line type sample analyzer according to claim 1 or 2, wherein at least one of the first switching valve and the second switching valve is a six-way valve. 制御部が、
サンプル濃縮時に、第１の切換弁と第２の切換弁とを経由して濃縮カラムにサンプル水が導通するように前記第１の切換弁と前記第２の切換弁とを制御し、
洗浄時に、前記濃縮カラムを遮断し、第１の切換弁と第２の切換弁とを経由して前記脱塩水供給装置から前記脱塩水を逆流させるように前記第１の切換弁と前記第２の切換弁とを制御することを特徴とするオンライン型サンプル分析装置の前処理装置の制御方法。 The control unit
Controlling the first switching valve and the second switching valve so that the sample water is conducted to the concentration column via the first switching valve and the second switching valve during sample concentration;
At the time of washing, the first switching valve and the second switching valve are shut off and the desalted water is caused to flow backward from the desalted water supply device via the first switching valve and the second switching valve. A control method for a pretreatment device of an on-line type sample analyzer, wherein the control valve is controlled.
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