JPH11230954A - Gas constituent sucking pipe inspection device - Google Patents
Gas constituent sucking pipe inspection deviceInfo
- Publication number
- JPH11230954A JPH11230954A JP4434798A JP4434798A JPH11230954A JP H11230954 A JPH11230954 A JP H11230954A JP 4434798 A JP4434798 A JP 4434798A JP 4434798 A JP4434798 A JP 4434798A JP H11230954 A JPH11230954 A JP H11230954A
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- JP
- Japan
- Prior art keywords
- gas
- pressure
- adsorption tube
- component adsorption
- gas component
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、気体成分吸着管検
査装置に係り、特に、医療分野における臨床検査，病態
管理，健康検査，飲酒運転及び麻薬の取締，火災原因捜
査等に使用される気体成分吸着管に好適な気体成分吸着
管の検査装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas component adsorption tube inspection apparatus, and more particularly, to a gas used for clinical examination, medical condition management, health examination, drunk driving and drug control, fire investigation, etc. in the medical field. The present invention relates to a gas component adsorption tube inspection apparatus suitable for a component adsorption tube.
【０００２】[0002]
【従来の技術】気体試料に含まれる希薄な特定成分をガ
スクロマトグラフ（ＧＣ）等を用いる分析装置で分析す
る工程を図７乃至図１３に基づいて説明する。2. Description of the Related Art A process of analyzing a rare specific component contained in a gas sample with an analyzer using a gas chromatograph (GC) or the like will be described with reference to FIGS.
【０００３】例えば、気体試料として人間の呼気を対象
とする場合、図７（Ａ）に示す捕集バッグ１００内に被
験者から呼気を吸入させる。このとき、捕集バッグ１０
０内には、希薄な特定成分たるペンタンｐ及び呼気中の
水分ｗが封入される（図７（Ｂ））。かかる採取呼気
は、図８に示すように、気体成分吸着管Ｋを介して吸引
ポンプ１０１に吸引され、これにより、気体成分吸着管
Ｋ内にペンタンｐ及び水分ｗが吸着される。図中の符号
１０２は、積算流量計である。[0003] For example, when human breath is targeted as a gas sample, the breath is inhaled from a subject into a collection bag 100 shown in FIG. At this time, the collection bag 10
In 0, pentane p, which is a rare specific component, and moisture w in expiration are enclosed (FIG. 7B). As shown in FIG. 8, the collected exhaled breath is sucked into the suction pump 101 via the gas component adsorption tube K, whereby pentane p and moisture w are adsorbed in the gas component adsorption tube K. Reference numeral 102 in the figure is an integrating flow meter.
【０００４】ここで、気体成分吸着管Ｋは、図９に示す
ように、両端部が開口し，一方の端部から他方の端部に
貫通する管状部材Ｋ１を備え、その内側中間部には気体
試料中の特定成分を吸着する吸着剤（テナックス，カー
ボトラップ等）Ｋ２が封入されている。そして、この気
体成分吸着管Ｋ内を気体試料が流動する際に、当該吸着
剤Ｋ２中を通過して特定成分の吸着が行われる。As shown in FIG. 9, the gas component adsorption tube K has a tubular member K1 which is open at both ends and penetrates from one end to the other end. An adsorbent (Tenax, carbo trap, etc.) K2 for adsorbing a specific component in the gas sample is enclosed. When the gas sample flows in the gas component adsorption tube K, the specific component is adsorbed by passing through the adsorbent K2.
【０００５】この特定成分の吸着が行われた気体成分吸
着管Ｋは、図１０に示すように、常温下でボンベ１０３
から供給されるＨｅガスを通過させて分析の妨げとなる
水分ｗの除去が行われる。水分ｗが除去されると、図１
１に示すように、気体成分吸着管Ｋはヒータ１０４にセ
ットされた状態で一方の前述のボンベ１０３に接続さ
れ、他方をＧＣ１０５に接続される。そして、気体成分
吸着管Ｋは、ヒータ１０４により１５０〜３５０［゜
Ｃ］に加熱された状態でボンベ１０３からＨｅガスの供
給が行われ、これにより気体成分吸着管Ｋの吸着剤Ｋ２
に吸着していたペンタンｐの熱脱離が行われ、脱離した
成分がＧＣ１０５により分析される。[0005] As shown in FIG. 10, the gas component adsorption tube K on which the specific component has been adsorbed is placed in a cylinder 103 at room temperature.
Is passed to pass He gas to remove water w which hinders analysis. When the water w is removed, FIG.
As shown in FIG. 1, the gas component adsorption tube K is connected to one of the above-mentioned cylinders 103 while being set on the heater 104, and the other is connected to the GC 105. The gas component adsorption tube K is supplied with He gas from the cylinder 103 in a state where the gas component adsorption tube K is heated to 150 to 350 [° C.] by the heater 104, whereby the adsorbent K2 of the gas component adsorption tube K is supplied.
Is thermally desorbed from the pentane p that has been adsorbed on the substrate, and the desorbed components are analyzed by the GC 105.
【０００６】使用済みの捕集バッグ１００及び気体成分
吸着管Ｋは、それぞれ再利用のために洗浄される。捕集
バッグ１００は、ボンベ１０３からＨｅガスが内部に吸
入され（図１２（Ａ））、口を閉塞した状態で乾燥器
（図示略）内に一定時間保存された後に（図１２
（Ｂ））、吸引ポンプ１０１により内部気体が排気され
て（図１２（Ｃ））、再び口が閉塞された状態で次回の
使用まで保存される。The used collecting bag 100 and the gas component adsorption tube K are each washed for reuse. He gas is sucked into the collection bag 100 from the cylinder 103 (FIG. 12A), and is stored in a dryer (not shown) for a certain period of time with the mouth closed (FIG. 12).
(B), the internal gas is exhausted by the suction pump 101 (FIG. 12C), and is stored until the next use in a state where the mouth is closed again.
【０００７】一方、気体成分吸着管Ｋは、図１３に示す
ように、恒温槽１０６内に収容されて一定温度に保たれ
つつ、一方の端部からボンベ１０６によるＮ2ガスが供
給される。これにより、熱脱離された吸着剤Ｋ２中の残
留成分がＮ2ガスにより、気体成分吸着管Ｋの外部に排
出され、再利用が可能となる。On the other hand, as shown in FIG. 13, the gas component adsorption tube K is accommodated in a constant temperature bath 106 and is kept at a constant temperature, and N 2 gas is supplied from one end of the tube by a cylinder 106. Thus, the thermally desorbed residual component in the adsorbent K2 is discharged to the outside of the gas component adsorption tube K by the N 2 gas, and can be reused.
【０００８】[0008]
【発明が解決しようとする課題】ここで、上記気体成分
吸着管では、吸着剤の封入が手作業により行われてお
り、個々の気体成分吸着管における吸着剤の充填状態を
均一化するためには、吸着剤を予め一定量計量し（天秤
秤使用）、気体成分吸着管の管状部材内を占める長さが
一定となるように充填を行っていた。Here, in the above gas component adsorption tube, the adsorbent is manually filled, and in order to make the filling state of the adsorbent in each gas component adsorption tube uniform. In this method, a predetermined amount of the adsorbent was measured in advance (using a balance), and the gas component was filled so that the length occupying the tubular member of the adsorption tube was constant.
【０００９】しかしながら、吸着剤の一粒一粒の大き
さ，形状には個体差があり、管状部材に一定量，一定長
さで充填を行っても、吸着剤の充填状態を均一化するこ
とはできなかった。気体成分吸着管は、吸着工程，脱離
工程，再生（洗浄）工程の際、その内部を一定流量でガ
スを吸引，排気されるため、上述のような個々の不均一
状態が生じると、吸着効率（一定温度下で一定圧力を加
えて吸着を行った場合の気体試料中の特定成分の吸着す
る割合），脱離効率（一定温度下で一定圧力を加えて脱
離を行った場合の気体試料中の特定成分の吸着する割
合）に差が生じ、これに伴って分析条件に差が生じるた
め、分析データにばらつきが生じる恐れがあった。However, there is an individual difference in the size and shape of each particle of the adsorbent, and even if the tubular member is filled with a fixed amount and a fixed length, the filling state of the adsorbent is made uniform. Could not. During the adsorption step, the desorption step, and the regeneration (washing) step, the gas is adsorbed and exhausted at a constant flow rate inside the gas component adsorption tube. Efficiency (percentage of specific components adsorbed in a gas sample when a constant pressure is applied at a constant temperature) and desorption efficiency (gas when a constant pressure is applied at a constant temperature and desorbed) A difference is caused in the ratio of specific components adsorbed in the sample), and a difference is caused in the analysis conditions. Accordingly, there is a possibility that the analysis data may vary.
【００１０】このため、かかるばらつきを平均化するた
めに一つのサンプルに対して複数の気体成分吸着管を使
用して分析を行わねばならず、試験効率が低下するとい
う不都合が生じていた。[0010] For this reason, in order to average out such variations, it is necessary to analyze a single sample using a plurality of gas component adsorption tubes, resulting in a disadvantage that the test efficiency is reduced.
【００１１】[0011]
【発明の目的】本発明は、かかる従来例の有する不都合
を改善し、試験効率を向上し得る気体成分吸着管検査装
置を提供することを、その目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for inspecting a gas component adsorption tube which can improve the disadvantages of the conventional example and improve the test efficiency.
【００１２】[0012]
【課題を解決するための手段】請求項１記載の発明は、
気体中の特定成分の吸着を行う筒状の気体成分吸着管の
一端部を保持する保持部と、この保持部と接続され，気
体成分吸着管に不活性ガスを一定の圧力で供給するガス
ボンベと、保持部とガスボンベとの間の圧力を検出する
圧力センサと、保持部とガスボンベとの接続，非接続を
切り換える調整バルブとを備え、圧力センサの出力に応
じて検出圧力を表示する表示部を有する制御部を設ける
という構成を採っている。上記不活性ガスとは、気体成
分吸着管に吸着されない成分のガスをいう。以下に同
じ。According to the first aspect of the present invention,
A holding portion for holding one end of a cylindrical gas component adsorption tube for adsorbing a specific component in a gas, and a gas cylinder connected to the holding portion for supplying an inert gas to the gas component adsorption tube at a constant pressure. A pressure sensor for detecting a pressure between the holding part and the gas cylinder, and an adjusting valve for switching connection / non-connection between the holding part and the gas cylinder, and a display part for displaying the detected pressure according to the output of the pressure sensor. A configuration is provided in which a control unit is provided. The inert gas refers to a gas of a component that is not adsorbed on the gas component adsorption tube. Same below.
【００１３】上記の構成では、保持部に気体成分吸着管
を装備し、しかる後に調整バルブを開いて気体成分吸着
管に不活性ガスを供給する。このとき、圧力センサの出
力に応じてガスボンベと気体成分吸着管との間の圧力
（以下、管内圧力とする）が表示部に表示される。この
管内圧力に大きく差がある場合、吸着効率，脱離効率に
変動が生じるため、予め使用する気体成分吸着管の管内
圧力を一定の帯域内に限定し、この帯域から外れた気体
成分吸着管については、気体成分吸着管内の吸着剤の詰
め直しを行う。In the above configuration, the holding portion is provided with the gas component adsorption tube, and then the regulating valve is opened to supply the inert gas to the gas component adsorption tube. At this time, the pressure between the gas cylinder and the gas component adsorption pipe (hereinafter referred to as the pipe pressure) is displayed on the display unit according to the output of the pressure sensor. If there is a large difference in the pipe pressure, the adsorption efficiency and the desorption efficiency fluctuate. Therefore, the pipe pressure of the gas component adsorption tube used in advance is limited to a certain band, and the gas component adsorption tube outside this band is deviated. For, the adsorbent in the gas component adsorption tube is refilled.
【００１４】請求項２記載の発明は、請求項１記載の発
明とほぼ同様の構成を備え、制御部に、前述の表示部に
替えて、圧力センサの出力に基づく検出圧力が所定の圧
力帯域内であるか否かを通知する通知部を設けるという
構成を採っている。A second aspect of the present invention has substantially the same configuration as the first aspect of the present invention, and the control unit replaces the above-mentioned display unit with a detected pressure based on the output of the pressure sensor in a predetermined pressure band. The configuration is such that a notification unit for notifying whether or not it is within is provided.
【００１５】かかる構成の場合には、保持部に装備され
た気体成分吸着管の管内圧力が予め決められた使用する
一定の帯域内又は帯域外のいずれかの場合に、通知部に
よる通知を行い、使用する気体成分吸着管と使用しない
気体成分吸着管とを分類する。使用する圧力帯域から外
れた気体成分吸着管については、気体成分吸着管内の吸
着剤の詰め直しを行う。[0015] In the case of such a configuration, when the pressure in the gas component adsorption tube provided in the holding unit is within a predetermined band to be used or outside the predetermined band to be used, the notification by the notification unit is performed. The gas component adsorption tubes used and the gas component adsorption tubes not used are classified. For the gas component adsorption tube that is out of the pressure band to be used, the adsorbent in the gas component adsorption tube is refilled.
【００１６】請求項３記載の発明は、請求項１記載の発
明とほぼ同様の構成を備え、前述の調整バルブに替え
て、保持部とガスボンベとの接続，非接続を外部信号に
より切り換える電磁バルブを設けると共に、制御部に、
前述の表示部に替えて、圧力センサの出力に基づく検出
圧力が所定の圧力帯域内であるか否かに応じて電磁バル
ブの切り換えを行う停止機能を設けるという構成を採っ
ている。According to a third aspect of the present invention, there is provided an electromagnetic valve which has substantially the same configuration as the first aspect of the invention, and switches between connection and disconnection between a holding portion and a gas cylinder by an external signal instead of the above-mentioned adjusting valve. And the control unit,
Instead of the above-described display unit, a configuration is provided in which a stop function for switching the electromagnetic valve is provided according to whether the detected pressure based on the output of the pressure sensor is within a predetermined pressure band.
【００１７】上述の構成では、保持部に装備された気体
成分吸着管の管内圧力が予め決められた使用する一定の
帯域内又は帯域外のいずれかの場合に、電磁バルブが閉
じられ、不活性ガスの供給が終了する。かかる動作が行
われるか否かにより、使用する気体成分吸着管と使用し
ない気体成分吸着管とを分類する。そして、使用する圧
力帯域から外れた気体成分吸着管については、気体成分
吸着管内の吸着剤の詰め直しを行う。In the above configuration, the electromagnetic valve is closed and the inert gas is closed when the pressure in the gas component adsorption tube provided in the holding unit is within a predetermined fixed band or a predetermined band to be used. The gas supply ends. The gas component adsorption tubes to be used and the gas component adsorption tubes not to be used are classified according to whether or not such an operation is performed. Then, for the gas component adsorption tube that is out of the pressure band to be used, the adsorbent in the gas component adsorption tube is refilled.
【００１８】請求項４記載の発明は、保持部に気体成分
吸着管を一定の温度に保温する保温部を併設し、他の構
成は、上述した請求項１，２又は３記載の発明と同様で
ある。According to a fourth aspect of the present invention, the holding section is provided with a heat retaining section for keeping the gas component adsorption tube at a constant temperature, and other configurations are the same as those of the first, second or third aspect of the present invention. It is.
【００１９】かかる構成では、保持部に保持された気体
成分吸着管が保温部により、一定温度に保温され、かか
る状態で管内圧力の検出が行われる。In such a configuration, the gas component adsorption tube held by the holding unit is kept at a constant temperature by the heating unit, and the pressure in the tube is detected in this state.
【００２０】本願発明は、上述した構成により前述した
目的を達成しようとするものである。The present invention is to achieve the above-mentioned object by the above-mentioned configuration.
【００２１】[0021]
【発明の実施の形態】本願発明の実施形態を図１乃至図
６に基づいて説明する。この実施形態は、前述した従来
例と同様に、気体成分中の特定成分の分析のための吸着
濃縮を図る気体成分吸着管Ｋの使用前における管内圧力
の検査を行う気体成分吸着管検査装置１を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In this embodiment, as in the conventional example described above, the gas component adsorption tube inspection apparatus 1 for inspecting the pressure inside the gas component adsorption tube K before use of the gas component adsorption tube K for performing adsorption concentration for analysis of a specific component in the gas component. Is shown.
【００２２】上記気体成分吸着管Ｋは、両端部が開口
し，一方の端部から他方の端部に貫通する一様の径の管
状部材Ｋ１を備え、具体的な寸法は、直径が６［ｍ
ｍ］，長さが１６０［ｍｍ］となっている。また、管状
部材Ｋ１の内部には、加熱により吸着した成分を脱離す
る性質を有する吸着剤（テナックス，カーボトラップ
等）Ｋ２を備えている。また、符号Ｋ３は、吸着剤Ｋ２
を両側から保持するために詰め込まれたガラスウールを
示している（図９参照）。The gas component adsorption tube K is provided with a tubular member K1 having an opening at both ends and having a uniform diameter penetrating from one end to the other end. m
m] and the length is 160 [mm]. Further, an adsorbent (Tenax, carbo trap, etc.) K2 having a property of desorbing components adsorbed by heating is provided inside the tubular member K1. The symbol K3 represents the adsorbent K2
FIG. 9 shows glass wool packed to hold from both sides (see FIG. 9).
【００２３】この気体成分吸着管検査装置１は、気体中
の特定成分の吸着を行う筒状の気体成分吸着管Ｋの一端
部を保持する保持部２と、この保持部２と配管１１，１
２，１３を介して接続され，気体成分吸着管Ｋに不活性
ガスを一定の圧力で供給するガスボンベ３と、保持部２
とガスボンベ３との間の圧力を検出する圧力センサ４
と、保持部２とガスボンベ３との接続，非接続を外部信
号により切り換える調整バルブ５と、圧力センサ４の出
力に基づく検出圧力が所定の圧力帯域内であるか否かに
応じて電磁バルブ５の切り換えを行う停止機能６１を有
する制御部６とを備えている。The gas component adsorption tube inspection apparatus 1 includes a holding portion 2 for holding one end of a cylindrical gas component adsorption tube K for adsorbing a specific component in a gas, and the holding portion 2 and the pipes 11 and 1.
A gas cylinder 3 connected to the gas component adsorbing tube K through an inert gas at a constant pressure;
Pressure sensor 4 for detecting the pressure between the gas and the gas cylinder 3
An adjustment valve 5 for switching connection / disconnection between the holding unit 2 and the gas cylinder 3 by an external signal; and an electromagnetic valve 5 according to whether or not the detected pressure based on the output of the pressure sensor 4 is within a predetermined pressure band. And a control unit 6 having a stop function 61 for performing the switching.
【００２４】以下、各部を詳説する。まず、保持部２
は、図２に示す如く、有底の筒状体であり、開口側から
気体成分吸着管Ｋの一端部が挿入され、底面側には配管
１３が接続されている。その内径は、気体成分吸着管Ｋ
が挿入自在の大きさに設定されており、内部周面には溝
２１が設けられ、Ｏリング２２が装備されている。この
Ｏリング２２は、気体成分吸着管Ｋの外径よりも幾分小
径に設定されている。このため、気体成分吸着管Ｋと保
持部２との気密状態を維持すると共に、摩擦力により気
体成分吸着管Ｋが抜け落ちなうように保持することがで
きる。Hereinafter, each part will be described in detail. First, the holding unit 2
As shown in FIG. 2, is a bottomed cylindrical body, one end of a gas component adsorption tube K is inserted from the opening side, and a pipe 13 is connected to the bottom side. Its inner diameter is the gas component adsorption tube K
Are set to a size that allows insertion, a groove 21 is provided on the inner peripheral surface, and an O-ring 22 is provided. The diameter of the O-ring 22 is set slightly smaller than the outer diameter of the gas component adsorption tube K. For this reason, while maintaining the airtight state of the gas component adsorption tube K and the holding | maintenance part 2, it can hold | maintain so that the gas component adsorption tube K may not fall off by frictional force.
【００２５】ガスボンベ３は、不活性ガスとしてヘリウ
ム（Ｈｅ）ガス，アルゴンガス又は窒素（Ｎ2）ガス等
を常にほぼ一定の圧力で供給する。この供給圧力につい
ては、特に限定がないが、複数の気体成分吸着管Ｋの検
査を行うに際して、検査環境を統一する必要があるの
で、ボンベ３の吐出口に設けられた開閉バルブにより予
め決められた一定の圧力で不活性ガスが供給されるよう
に調整されている。The gas cylinder 3 always supplies helium (He) gas, argon gas or nitrogen (N 2 ) gas as an inert gas at a substantially constant pressure. The supply pressure is not particularly limited. However, when inspecting a plurality of gas component adsorption tubes K, it is necessary to unify the inspection environment. Therefore, the supply pressure is predetermined by an open / close valve provided at the discharge port of the cylinder 3. It is adjusted so that the inert gas is supplied at a constant pressure.
【００２６】さらに、このガスボンベ３の吐出口は、電
磁バルブ５と連通する配管１１が接続されている。この
電磁バルブ５は、制御部６の動作指令信号により開閉が
切り換えられる。電磁バルブ５の下流側は、圧力センサ
４と連通する配管１２が接続されている。Further, a discharge port of the gas cylinder 3 is connected to a pipe 11 communicating with the electromagnetic valve 5. The opening and closing of the electromagnetic valve 5 is switched by an operation command signal of the control unit 6. A pipe 12 communicating with the pressure sensor 4 is connected to the downstream side of the electromagnetic valve 5.
【００２７】圧力センサ４は、ガスボンベ３から気体成
分吸着管Ｋの一端部の間の圧力を検出するものであっ
て、配管１２と配管１３との間に設けられている。この
圧力センサ４は、外圧を受けてその外圧に応じた検出信
号を制御部６に出力する形式のもので、半導体圧力セン
サ，圧電式圧力センサ等が使用される。The pressure sensor 4 detects the pressure between the gas cylinder 3 and one end of the gas component adsorption pipe K, and is provided between the pipe 12 and the pipe 13. The pressure sensor 4 receives external pressure and outputs a detection signal corresponding to the external pressure to the control unit 6, and a semiconductor pressure sensor, a piezoelectric pressure sensor, or the like is used.
【００２８】次に、制御部６について説明する。この制
御部６は、前述したように電磁バルブ５の切り換えを行
う停止機能６１を備えると共に、不活性ガスの供給の停
止のタイミングを測るタイマー６２を備えている。ま
た、図示しないがこの制御部には、検査を開始するため
の作動スイッチが設けられており、この作動スイッチに
より電磁バルブ５が閉じた状態から開いた状態に切り替
わる。Next, the control section 6 will be described. The control unit 6 has the stop function 61 for switching the electromagnetic valve 5 as described above, and also has the timer 62 for measuring the timing of stopping the supply of the inert gas. Although not shown, the control unit is provided with an operation switch for starting the inspection, and the operation switch switches the electromagnetic valve 5 from a closed state to an open state.
【００２９】上述の停止機能６１は、圧力センサ４から
の出力に基づく管内圧力と予め設定された管内圧力の一
定の帯域とを比較し、この帯域内にあるかを判定する。
そして、検出圧力が帯域内にある限り電磁バルブ５を開
いた状態とし、一定の帯域から外れた場合に電磁バルブ
５を閉じた状態に切り換える。また、圧力センサ４から
の出力に基づく管内圧力が、予め設定した一定の帯域内
であっても、タイマー６２により、一定時間経過後には
電磁バルブ５が閉じられる。The above-mentioned stop function 61 compares the in-pipe pressure based on the output from the pressure sensor 4 with a predetermined predetermined band of the in-pipe pressure, and determines whether or not the pressure is within this band.
Then, the electromagnetic valve 5 is opened as long as the detected pressure is within the band, and the electromagnetic valve 5 is switched to the closed state when the detected pressure is out of the predetermined band. Further, even if the pressure in the pipe based on the output from the pressure sensor 4 is within a predetermined fixed band, the electromagnetic valve 5 is closed by the timer 62 after a certain time elapses.
【００３０】以下、上述の実施形態に動作について図３
に基づいて説明する。まず、保持部２に気体成分吸着管
Ｋの一端部を挿入してセットする（ステップＳ１）。こ
の状態では、電磁バルブ５は閉じられた状態にある。次
に、作動スイッチがオンにされ（ステップＳ２）、電磁
バルブ５が開かれる。これにより、不活性ガスが気体成
分吸着管Ｋに供給される（ステップＳ３）。このとき、
ガス供給圧力は一定のため、ガスボンベ３と気体成分吸
着管Ｋとの間の圧力は、気体成分吸着管Ｋの流動損失に
応じてある一定の圧力に安定する。The operation of the above embodiment will now be described with reference to FIG.
It will be described based on. First, one end of the gas component adsorption tube K is inserted into the holding unit 2 and set (step S1). In this state, the electromagnetic valve 5 is in a closed state. Next, the operation switch is turned on (step S2), and the electromagnetic valve 5 is opened. Thus, the inert gas is supplied to the gas component adsorption tube K (Step S3). At this time,
Since the gas supply pressure is constant, the pressure between the gas cylinder 3 and the gas component adsorption tube K is stabilized at a certain pressure according to the flow loss of the gas component adsorption tube K.
【００３１】この圧力が圧力センサ４に検出され、制御
部６に出力される（ステップＳ５）。このときの検出圧
力が、予め設定された圧力帯域外である場合には、停止
機能６１により電磁バルブ５が閉じられ、不活性ガスの
供給が停止される（ステップＳ８）。また、予め設定さ
れた圧力帯域内である場合には、電磁バルブ５は開いた
状態が維持され，継続して不活性ガスの供給が行われ
る。そして、一定時間が経過すると（ステップＳ５）、
タイマー６２が作動して電磁バルブ５を閉じた状態切り
換える（ステップＳ６）。そして、気体成分吸着管Ｋが
保持部２から外され（ステップＳ７，ステップＳ９）、
検査が終了する。This pressure is detected by the pressure sensor 4 and output to the control unit 6 (step S5). If the detected pressure is outside the preset pressure range, the electromagnetic valve 5 is closed by the stop function 61 and the supply of the inert gas is stopped (step S8). When the pressure is within the preset pressure band, the electromagnetic valve 5 is kept open, and the supply of the inert gas is continuously performed. Then, when a certain time has elapsed (step S5),
The timer 62 is operated to switch the state in which the electromagnetic valve 5 is closed (step S6). Then, the gas component adsorption tube K is removed from the holding unit 2 (Step S7, Step S9),
The inspection ends.
【００３２】検査により、所定の管内圧力とならなかっ
た気体成分吸着管Ｋについては、吸着剤Ｋ２の詰め直し
が行われる。ここで、タイマー６２が作動する時間は、
停止機能６１により電磁バルブ５が閉じられるまでの時
間と比較して明確に区別できるように、充分に長いもの
とする。As a result of the inspection, the adsorbent K2 is refilled with respect to the gas component adsorption tube K whose pressure in the tube has not reached the predetermined pressure. Here, the time when the timer 62 operates is
The length is set to be sufficiently long so that it can be clearly distinguished from the time until the electromagnetic valve 5 is closed by the stop function 61.
【００３３】以上のように、本実施形態では、吸着剤Ｋ
２の一粒一粒の大きさ，形状が異なり、その上、吸着剤
Ｋ２が管状部材Ｋ１に手作業で詰め込まれても、管内圧
力が一定条件を満たす気体成分吸着管Ｋを抽出すること
ができ、かかる管内圧力の均一化により、吸着剤Ｋ２の
充填状態を均一化することができる。従って、各気体成
分吸着管Ｋごとに吸着効率，脱離効率を一定の幅で統一
することができ、分析の際に、分析条件を均一化するこ
とができる。As described above, in the present embodiment, the adsorbent K
In addition, even if the size and shape of each of the two particles are different, and even if the adsorbent K2 is manually packed into the tubular member K1, the gas component adsorption tube K whose internal pressure satisfies a certain condition can be extracted. The filling state of the adsorbent K2 can be made uniform by making the pipe pressure uniform. Therefore, the adsorption efficiency and the desorption efficiency can be unified within a certain range for each gas component adsorption tube K, and the analysis conditions can be made uniform at the time of analysis.
【００３４】このため、複数の気体成分吸着管Ｋを用い
た比較試験の場合に、気体成分吸着管Ｋの誤差による分
析精度の低下を防止し、信頼性の高い分析を行うことが
可能となる。また、各気体成分吸着管Ｋごとのばらつき
が生じないため、当該ばらつきの平均化のための一つの
サンプルに対する複数の気体成分吸着管Ｋによる分析を
回避し、試験効率の向上を図ることが可能となる。For this reason, in the case of a comparative test using a plurality of gas component adsorption tubes K, it is possible to prevent a decrease in analysis accuracy due to an error in the gas component adsorption tubes K, and to perform highly reliable analysis. . Further, since there is no variation for each gas component adsorption tube K, it is possible to avoid the analysis of one sample for averaging the variation by a plurality of gas component adsorption tubes K, and to improve the test efficiency. Becomes
【００３５】ここで、上述の保持部２には、図４の如
く、気体成分吸着管Ｋを一定の温度に保温する保温部と
してのヒーター７を併設しても良い。このヒーター７
は、筒状であり、内部に気体成分吸着管Ｋが挿入され
る。また、気体成分吸着管Ｋの中間部を加熱する構造で
あり、吸着剤Ｋ２の封入位置と一致する。ヒーター７の
外周は一様に断熱材７１で被覆されており、外気の影響
を排除している。Here, as shown in FIG. 4, the above-mentioned holding section 2 may be provided with a heater 7 as a heat keeping section for keeping the gas component adsorption tube K at a constant temperature. This heater 7
Has a tubular shape, into which a gas component adsorption tube K is inserted. In addition, the structure is such that the middle part of the gas component adsorption tube K is heated, and coincides with the position where the adsorbent K2 is filled. The outer periphery of the heater 7 is uniformly covered with a heat insulating material 71 to eliminate the influence of outside air.
【００３６】かかるヒーター７により、試験を行う複数
の気体成分吸着管Ｋがいずれも一定の温度に維持され、
より均一な条件下において検査を行うことができる。従
って、吸着剤Ｋ２の充填状態をより厳密に均一化するこ
とができ、複数の気体成分吸着管Ｋの吸着効率，脱離効
率等の誤差をより低減し、さらなる信頼性の高い分析を
行うことが可能となる。The heater 7 keeps the plurality of gas component adsorption tubes K to be tested at a constant temperature.
The inspection can be performed under more uniform conditions. Therefore, the filling state of the adsorbent K2 can be more strictly uniform, errors in the adsorption efficiency and desorption efficiency of the plurality of gas component adsorption tubes K can be further reduced, and a more reliable analysis can be performed. Becomes possible.
【００３７】また、上述の制御部６については、図５に
示すように、停止機能６１に替えて検出圧力を表示する
表示部６３を設けても良い。検査を行う者は、かかる表
示部６３に表示された数値を見て、気体成分吸着管Ｋが
一定の圧力帯域内にあるか否かを判断する。また、タイ
マー６２により不活性ガスが一定時間供給されると電磁
バルブ５が閉じられる点は上述の場合と同様である。か
かる構成の場合も、図１の構成とほぼ同様の効果を得る
ことが可能である。なお、この構成の場合には、電磁バ
ルブ５を手動の調整バルブに替えて、検査終了後に、検
査者が手動により調整バルブを閉じる構成としても良
い。Further, as shown in FIG. 5, the control section 6 may be provided with a display section 63 for displaying the detected pressure in place of the stop function 61. The person who performs the inspection looks at the numerical value displayed on the display unit 63 and determines whether or not the gas component adsorption tube K is within a certain pressure band. Further, the point that the electromagnetic valve 5 is closed when the inert gas is supplied for a predetermined time by the timer 62 is the same as in the above-described case. In the case of such a configuration, it is possible to obtain substantially the same effect as the configuration of FIG. In this configuration, the electromagnetic valve 5 may be replaced with a manual adjustment valve, and the inspector may manually close the adjustment valve after the inspection.
【００３８】さらに、制御部６については、図６に示す
ように、停止機能６１に替えて検出圧力が一定の圧力帯
域内にあるか否か通知する通知部６４を設けても良い。
この通知部６４としては、表示ランプを用いることが好
適である。検出圧力が所定の圧力帯域内にある場合に点
灯するランプと所定の帯域外にある場合に点灯するラン
プとを備え、検査を行う者は、いずれのランプが点灯し
ているかによって、気体成分吸着管Ｋが一定の管内圧力
にあるか否かを判断する。また、タイマー６２により不
活性ガスが一定時間供給されると電磁バルブ５が閉じら
れる点は上述の場合と同様である。かかる構成の場合
も、図１の構成とほぼ同様の効果を得ることが可能であ
る。なお、この構成の場合には、電磁バルブ５を手動の
調整バルブに替えて、検査終了後に、検査者が手動によ
り調整バルブを閉じる構成としても良い。Further, as shown in FIG. 6, the control unit 6 may be provided with a notifying unit 64 for notifying whether or not the detected pressure is within a certain pressure band, instead of the stop function 61.
It is preferable to use a display lamp as the notification unit 64. It has a lamp that lights when the detected pressure is within a predetermined pressure band and a lamp that lights when the detected pressure is outside the predetermined band. It is determined whether or not the pipe K is at a constant pipe pressure. Further, the point that the electromagnetic valve 5 is closed when the inert gas is supplied for a predetermined time by the timer 62 is the same as in the above-described case. In the case of such a configuration, it is possible to obtain substantially the same effect as the configuration of FIG. In this configuration, the electromagnetic valve 5 may be replaced with a manual adjustment valve, and the inspector may manually close the adjustment valve after the inspection.
【００３９】なお、上述の表示部６３及び通知部６４
は、制御部６からの動作指令信号の伝達が可能なように
接続されていれば良く、図示の如く、制御部６上に配置
しなくとも良い。Note that the display unit 63 and the notification unit 64 described above are used.
May be connected so that an operation command signal can be transmitted from the control unit 6, and need not be disposed on the control unit 6 as shown in the figure.
【００４０】また、制御部６には、使用する気体成分吸
着管Ｋの圧力帯域を設定入力する入力手段を併設しても
良い。かかる入力手段としては、キーボード等の数値入
力手段や、回転式のダイヤル等を用いることが好適であ
る。The control section 6 may be provided with an input means for setting and inputting the pressure band of the gas component adsorption tube K to be used. As such input means, it is preferable to use numerical value input means such as a keyboard, a rotary dial, or the like.
【００４１】[0041]
【発明の効果】請求項１記載の発明では、不活性ガスの
気体成分吸着管内に送り、その際の管内圧力を表示する
表示部を有する制御部を設けたため、吸着剤の一粒一粒
の大きさ，形状が異なり、その上、吸着剤が管状部材に
手作業で詰め込まれても、管内圧力が一定条件を満たす
気体成分吸着管を抽出することができ、かかる管内圧力
の均一化により、吸着剤の充填状態を均一化することが
できる。従って、各気体成分吸着管ごとに吸着効率，脱
離効率を一定の幅で統一することができ、分析の際に、
分析条件を均一化することができる。According to the first aspect of the present invention, since a control unit having a display unit for sending the inert gas into the gas component adsorption tube and displaying the pressure in the tube at that time is provided, each of the adsorbents has one particle. Even if the size and shape are different, and even if the adsorbent is manually packed into the tubular member, it is possible to extract the gas component adsorption tube that satisfies a certain condition in the tube pressure, and by equalizing the tube pressure, The filling state of the adsorbent can be made uniform. Therefore, the adsorption efficiency and desorption efficiency can be unified within a certain range for each gas component adsorption tube.
The analysis conditions can be made uniform.
【００４２】このため、複数の気体成分吸着管を用いた
比較試験の場合に、気体成分吸着管の誤差による分析精
度の低下を防止し、信頼性の高い分析を行うことが可能
となる。また、各気体成分吸着管Ｋごとのばらつきが生
じないため、当該ばらつきの平均化のための一つのサン
プルに対する複数の気体成分吸着管による分析を回避
し、試験効率の向上を図ることが可能となる。For this reason, in the case of a comparative test using a plurality of gas component adsorption tubes, it is possible to prevent a decrease in analysis accuracy due to an error in the gas component adsorption tube, and to perform highly reliable analysis. In addition, since there is no variation for each gas component adsorption tube K, it is possible to avoid the analysis of a single sample by a plurality of gas component adsorption tubes for averaging the variation, thereby improving the test efficiency. Become.
【００４３】請求項２記載の発明では、圧力センサの出
力に基づく検出圧力が所定の圧力帯域内であるか否かを
通知する通知部を有する制御部を設けたため、数値を読
んで検出圧力が所定の範囲内かを判断する必要がなく、
請求項１記載の発明と同様の効果を有すると共に、検査
の作業効率を向上を図ることができる。According to the second aspect of the present invention, the control unit having the notification unit for notifying whether or not the detected pressure based on the output of the pressure sensor is within a predetermined pressure band is provided. There is no need to judge whether it is within the predetermined range,
In addition to having the same effects as the first aspect of the present invention, the inspection work efficiency can be improved.
【００４４】請求項３記載の発明は、接続，非接続を外
部信号により切り換える電磁バルブと、圧力センサの出
力に基づく検出圧力が所定の圧力帯域内であるか否かに
応じて電磁バルブを閉じる停止機能を有する制御部とを
備えるため、不活性ガスが供給されているか否かにより
検出圧力が所定の圧力帯域内であるかを判断することが
でき、且つ、検査作業を簡略化することができ、請求項
１記載の発明と同様の効果を有すると共に、さらなる検
査の作業効率を向上を図ることができる。According to a third aspect of the present invention, there is provided an electromagnetic valve for switching between connection and disconnection by an external signal, and closing of the electromagnetic valve depending on whether a detected pressure based on an output of the pressure sensor is within a predetermined pressure band. Since a control unit having a stop function is provided, it is possible to determine whether the detected pressure is within a predetermined pressure band based on whether or not the inert gas is supplied, and to simplify the inspection work. This has the same effect as the first aspect of the present invention, and can further improve the work efficiency of the inspection.
【００４５】請求項４記載の発明は、保持部に気体成分
吸着管を一定の温度に保温する保温部を併設したため、
試験を行う複数の気体成分吸着管がいずれも一定の温度
に維持され、より均一な条件下において検査を行うこと
ができる。従って、上述した各効果に加えて、吸着剤の
充填状態をより厳密に均一化することができ、複数の気
体成分吸着管の吸着効率，脱離効率等の誤差をより低減
し、さらなる信頼性の高い分析を行うことが可能とな
る。According to the fourth aspect of the present invention, since the holding section is provided with a heat retaining section for keeping the gas component adsorption tube at a constant temperature,
The plurality of gas component adsorption tubes to be tested are all maintained at a constant temperature, and the inspection can be performed under more uniform conditions. Therefore, in addition to the effects described above, the filling state of the adsorbent can be more strictly uniformed, and errors in the adsorption efficiency and desorption efficiency of a plurality of gas component adsorption tubes can be further reduced, and further reliability can be improved. It is possible to perform high analysis.
【００４６】以上のように、本発明により、従来にない
優れた気体成分吸着管検査装置を提供することが可能で
ある。As described above, according to the present invention, it is possible to provide an excellent gas component adsorption tube inspection apparatus which has not been achieved conventionally.
【図１】本発明の一実施形態である気体成分吸着管検査
装置を示す構成図である。FIG. 1 is a configuration diagram illustrating a gas component adsorption tube inspection apparatus according to an embodiment of the present invention.
【図２】図１に開示した保持部を抽出した拡大断面図で
ある。FIG. 2 is an enlarged cross-sectional view illustrating a holding unit disclosed in FIG. 1;
【図３】本実施形態の動作を示すフローチャートであ
る。FIG. 3 is a flowchart showing an operation of the embodiment.
【図４】保持部に保温部を併設した例を示す断面図であ
る。FIG. 4 is a cross-sectional view illustrating an example in which a heat retaining unit is provided in addition to a retaining unit.
【図５】制御部に表示部を設けた例を示す構成図であ
る。FIG. 5 is a configuration diagram illustrating an example in which a display unit is provided in a control unit.
【図６】制御部に通知部を設けた例を示す構成図であ
る。FIG. 6 is a configuration diagram illustrating an example in which a notification unit is provided in a control unit.
【図７】気体試料中の特定成分をＧＣ分析するべく当該
気体試料を捕集する捕集バッグの説明図を示し、図７
（Ａ）は捕集前の状態を示し、図７（Ｂ）は捕集後の状
態を示す。FIG. 7 is an explanatory view of a collection bag for collecting the gas sample in order to perform a GC analysis of a specific component in the gas sample;
7A shows a state before collection, and FIG. 7B shows a state after collection.
【図８】気体試料中の特定成分をＧＣ分析するべく当該
気体試料中の特定成分を吸着する吸着工程を示す構成図
である。FIG. 8 is a configuration diagram showing an adsorption step of adsorbing a specific component in a gas sample to perform a GC analysis on the specific component in the gas sample.
【図９】気体成分吸着管を示す一部切り欠いた斜視図で
ある。FIG. 9 is a partially cutaway perspective view showing a gas component adsorption tube.
【図１０】気体試料中の特定成分をＧＣ分析するべく気
体成分吸着管中の水分を除去する水分除去工程を示す構
成図である。FIG. 10 is a configuration diagram showing a water removing step of removing water from a gas component adsorption tube in order to perform a GC analysis of a specific component in a gas sample.
【図１１】気体試料中の特定成分をＧＣ分析するべく気
体成分吸着管中の吸着成分を脱離する脱離工程を示す構
成図である。FIG. 11 is a configuration diagram showing a desorption step of desorbing an adsorbed component in a gas component adsorption tube in order to perform a GC analysis on a specific component in a gas sample.
【図１２】捕集バッグの洗浄工程を示す説明図であり、
図１２（Ａ）は窒素ガスの注入状態を示し、図１２
（Ｂ）は注入後の保存状態を示し、図１２（Ｃ）は窒素
の除去状態を示す。FIG. 12 is an explanatory diagram showing a washing step of the collection bag;
FIG. 12A shows an injection state of nitrogen gas.
(B) shows the storage state after injection, and FIG. 12 (C) shows the nitrogen removal state.
【図１３】気体成分吸着管の吸着剤再生工程を示す説明
図である。FIG. 13 is an explanatory view showing an adsorbent regeneration step of a gas component adsorption tube.
１ 気体成分吸着管検査装置 ２ 保持部 ３ ガスボンベ ４ 圧力センサ ５ 電磁バルブ ６ 制御部 ７ ヒーター（保温手段） ６１ 停止機能 ６３ 表示部 ６４ 通知部 Ｋ 気体成分吸着管 DESCRIPTION OF SYMBOLS 1 Gas component adsorption tube inspection apparatus 2 Holder 3 Gas cylinder 4 Pressure sensor 5 Electromagnetic valve 6 Control unit 7 Heater (heat retaining means) 61 Stop function 63 Display unit 64 Notification unit K Gas component adsorption tube
Claims (4)
体成分吸着管の一端部を保持する保持部と、この保持部
と接続され，前記気体成分吸着管に不活性ガスを一定の
圧力で供給するガスボンベと、前記保持部とガスボンベ
との間の圧力を検出する圧力センサと、前記保持部とガ
スボンベとの接続，非接続を切り換える調整バルブとを
備え、 前記圧力センサの出力に応じた検出圧力を表示する表示
部を有する制御部を設けたことを特徴とする気体成分吸
着管検査装置。1. A holding portion for holding one end of a cylindrical gas component adsorption tube for adsorbing a specific component in a gas, and an inert gas is connected to the holding portion and a predetermined amount of inert gas is supplied to the gas component adsorption tube. A gas cylinder supplied by pressure, a pressure sensor for detecting a pressure between the holding section and the gas cylinder, and an adjusting valve for switching connection / non-connection between the holding section and the gas cylinder, according to an output of the pressure sensor. A gas component adsorption tube inspection device, further comprising a control unit having a display unit for displaying the detected pressure.
体成分吸着管の一端部を保持する保持部と、この保持部
と接続され，前記気体成分吸着管に不活性ガスを一定の
圧力で供給するガスボンベと、前記保持部とガスボンベ
との間の圧力を検出する圧力センサと、前記保持部とガ
スボンベとの接続，非接続を切り換える調整バルブとを
備え、 前記圧力センサの出力に基づく検出圧力が所定の圧力帯
域内であるか否かを通知する通知部を有する制御部を設
けたことを特徴とする気体成分吸着管検査装置。2. A holding portion for holding one end of a cylindrical gas component adsorption tube for adsorbing a specific component in a gas, and a fixed portion connected to the holding portion for supplying an inert gas to the gas component adsorption tube. A gas cylinder supplied by pressure, a pressure sensor for detecting a pressure between the holding section and the gas cylinder, and an adjusting valve for switching connection / disconnection between the holding section and the gas cylinder, based on an output of the pressure sensor A gas component adsorption tube inspection device, comprising: a control unit having a notification unit that notifies whether a detected pressure is within a predetermined pressure band.
体成分吸着管の一端部を保持する保持部と、この保持部
と接続され，前記気体成分吸着管に不活性ガスを一定の
圧力で供給するガスボンベと、前記保持部とガスボンベ
との間の圧力を検出する圧力センサと、前記保持部とガ
スボンベとの接続，非接続を外部信号により切り換える
電磁バルブとを備え、 前記圧力センサの出力に基づく検出圧力が所定の圧力帯
域内であるか否かに応じて前記電磁バルブを閉じる停止
機能を有する制御部を設けたことを特徴とする気体成分
吸着管検査装置。3. A holding portion for holding one end of a cylindrical gas component adsorption tube for adsorbing a specific component in a gas, and an inert gas which is connected to the holding portion and in which a predetermined amount of inert gas is supplied to the gas component adsorption tube. A gas cylinder for supplying pressure, a pressure sensor for detecting a pressure between the holding part and the gas cylinder, and an electromagnetic valve for switching connection / disconnection of the holding part and the gas cylinder by an external signal. A gas component adsorption tube inspection device, further comprising a control unit having a stop function for closing the electromagnetic valve according to whether a detected pressure based on an output is within a predetermined pressure band.
の温度に保温する保温部を併設したことを特徴とする請
求項１，２又は３記載の気体成分吸着管検査装置。4. The gas component adsorption tube inspection apparatus according to claim 1, wherein a heat retaining portion for keeping the gas component adsorption tube at a constant temperature is provided in the holding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4434798A JPH11230954A (en) | 1998-02-10 | 1998-02-10 | Gas constituent sucking pipe inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4434798A JPH11230954A (en) | 1998-02-10 | 1998-02-10 | Gas constituent sucking pipe inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11230954A true JPH11230954A (en) | 1999-08-27 |
Family
ID=12688988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4434798A Withdrawn JPH11230954A (en) | 1998-02-10 | 1998-02-10 | Gas constituent sucking pipe inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11230954A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074756A (en) * | 1999-08-31 | 2001-03-23 | Hitachi Ltd | Pretreatment device of specimen |
| JP2005241473A (en) * | 2004-02-26 | 2005-09-08 | Perkinelmer Japan Co Ltd | Air pollutant collecting device |
| CN100454359C (en) * | 2006-01-22 | 2009-01-21 | 戚文军 | Gas Chemical disaster accident handling detection training device |
-
1998
- 1998-02-10 JP JP4434798A patent/JPH11230954A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074756A (en) * | 1999-08-31 | 2001-03-23 | Hitachi Ltd | Pretreatment device of specimen |
| JP2005241473A (en) * | 2004-02-26 | 2005-09-08 | Perkinelmer Japan Co Ltd | Air pollutant collecting device |
| CN100454359C (en) * | 2006-01-22 | 2009-01-21 | 戚文军 | Gas Chemical disaster accident handling detection training device |
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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: 20050510 |