JPH06294720A - Method and system for detecting gas component in the water - Google Patents
Method and system for detecting gas component in the waterInfo
- Publication number
- JPH06294720A JPH06294720A JP7996193A JP7996193A JPH06294720A JP H06294720 A JPH06294720 A JP H06294720A JP 7996193 A JP7996193 A JP 7996193A JP 7996193 A JP7996193 A JP 7996193A JP H06294720 A JPH06294720 A JP H06294720A
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- gas
- water
- detector
- pipe
- component
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水中での油やガスなど
の漏洩を検出する水中ガスの検出方法および装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater gas detection method and apparatus for detecting leakage of oil or gas in water.
【０００２】[0002]
【従来の技術】原油や天然ガスを採掘するための海上基
地や海洋設置パイプラインでの原油や天然ガスの漏洩に
よる人的被害や環境汚染を最小限に抑えるために、漏洩
をできるだけ早期に発見する必要がある。従来、漏洩し
た原油や天然ガスの検出は、各種の検出方法を用いて海
面上で行われていた。しかしながら、これらの方法で
は、海中で漏洩が起こった場合に、検出されるまでに時
間がかかったり、漏洩箇所を特定できないために対策に
時間がかかるという問題があった。従って、水中で早期
に漏洩を検出する必要がある。原油中のガス成分や天然
ガスを水中で検出することができれば早期の漏洩検出が
可能になる。2. Description of the Related Art Leakage is discovered as early as possible in order to minimize human injury and environmental pollution due to leakage of crude oil and natural gas at offshore bases for mining crude oil and natural gas and offshore pipelines. There is a need to. Conventionally, leaked crude oil and natural gas have been detected on the surface of the sea using various detection methods. However, these methods have a problem that when a leak occurs in the sea, it takes time to be detected, and it takes time to take measures because the leak location cannot be specified. Therefore, it is necessary to detect the leak in water early. If gas components in crude oil and natural gas can be detected in water, early leak detection is possible.
【０００３】従来、水中のガス成分の測定法に関して、
特開平４−９５７５２号公報で、“気体透過膜を用いた
液体中の溶存成分ガス濃度測定法”が提案されている。
この測定法を図６を用いて説明する。一方に気体取入口
７、他方に検出器６が接続された気体透過膜チューブ１
７を水中に浸漬し、気体透過膜を透過して気体透過膜チ
ューブ１７内部の気相に拡散してきた水中のガス成分を
検出器６に輸送し測定することにより、水中のガス成分
を検出するものであった。Conventionally, regarding the measuring method of gas components in water,
Japanese Unexamined Patent Publication (Kokai) No. 4-95752 proposes a "method for measuring the concentration of a dissolved component gas in a liquid using a gas permeable membrane".
This measuring method will be described with reference to FIG. Gas permeable membrane tube 1 with gas inlet 7 on one side and detector 6 on the other side
The gas component in water is detected by immersing 7 in water, transporting the gas component in the water that has permeated the gas permeable membrane and diffused into the gas phase inside the gas permeable membrane tube 17 to the detector 6, and measures it. It was a thing.
【０００４】[0004]
【発明が解決しようとする課題】上述した従来の水中ガ
ス成分の検出方法では、気体透過部が１つであり、水中
の１箇所でしか検出が行えないため、迅速に漏洩箇所を
特定するのは困難であるという問題があった。また、長
期使用に伴い、生物付着等により気体透過膜が閉塞して
正常に機能しなくなるという問題があった。In the above-described conventional method for detecting a gas component in water, the number of gas permeation parts is one, and the detection can be made only at one position in water. Had the problem of being difficult. In addition, there has been a problem that the gas permeable membrane is clogged due to the attachment of organisms or the like and does not function normally with long-term use.
【０００５】本発明の目的は、これらの問題を解決した
水中ガス成分の検出方法および装置を提供することにあ
る。An object of the present invention is to provide a method and an apparatus for detecting a gas component in water which solves these problems.
【０００６】[0006]
【課題を解決するための手段】本発明の水中ガス成分の
検出方法は、任意の複数の位置に水中のガス成分を透過
する気体透過部を配置した送気管を水中に設置して、各
々の気体透過部内部の気相中のガス成分を戻り管で検出
器に送り、この検出器で前記ガス成分を測定することに
より、各々の気体透過部近傍の水中のガス成分を検出す
ることを特徴とする。According to the method for detecting a gas component in water of the present invention, an air supply pipe having a gas permeable portion for transmitting a gas component in water at any of a plurality of positions is installed in water, and each of them is installed. The gas component in the gas phase inside the gas permeable portion is sent to a detector by a return pipe, and the gas component is measured by this detector to detect the gas component in water near each gas permeable portion. And
【０００７】また本発明の水中ガス成分の検出装置は、
気体を取入れる気体取入口と、この気体取入口に接続さ
れ、水中に設置され、任意の複数の位置で分岐された送
気管と、この送気管の分岐された位置にそれぞれ設けら
れ、水中のガス成分を透過する複数の気体透過部と、こ
れら複数の気体透過部のそれぞれの出口側に接続され、
各々の気体透過部内部のガス成分を輸送する複数の戻り
管と、これら戻り管を経由して輸送されてきたガス成分
を検出する検出部と、を備えることを特徴とする。Further, the detection device for the underwater gas component of the present invention is
A gas inlet for taking in gas, an air pipe connected to this gas inlet, installed in water, branched at arbitrary plural positions, and provided at each branched position of this air pipe, A plurality of gas permeable parts that permeate gas components, and are connected to the respective outlet sides of the plurality of gas permeable parts,
It is characterized by comprising a plurality of return pipes for transporting gas components inside each gas permeation unit, and a detection unit for detecting gas components transported via these return pipes.
【０００８】[0008]
【作用】図１は本発明の原理を示す図である。FIG. 1 is a diagram showing the principle of the present invention.
【０００９】一方に送気管１、他方に戻り管２が接続さ
れた気体透過部３の一部に気体透過膜４が設けられてい
る。気体透過部３の周辺にガス成分５が存在すると、こ
の成分は気体透過膜４を透過して気体透過部３内の気相
に入る。気体透過部３の出口側の戻り管２は検出器６に
接続されており、気体透過部３内の気相は戻り管２を経
由して検出器６に輸送され、気相中のガス成分が検出さ
れる。A gas permeable membrane 4 is provided on a part of the gas permeable portion 3 to which the air supply pipe 1 is connected on one side and the return pipe 2 is connected on the other side. When the gas component 5 exists around the gas permeable portion 3, this component permeates the gas permeable membrane 4 and enters the gas phase in the gas permeable portion 3. The return pipe 2 on the outlet side of the gas permeable portion 3 is connected to the detector 6, and the gas phase in the gas permeable portion 3 is transported to the detector 6 via the return pipe 2 and the gas component in the gas phase Is detected.
【００１０】[0010]
【実施例】次に、本発明の実施例を説明する。EXAMPLES Next, examples of the present invention will be described.
【００１１】図２は本発明の水中ガス成分の検出装置の
第１の実施例を示す図である。FIG. 2 is a diagram showing a first embodiment of the device for detecting a gas component in water according to the present invention.
【００１２】本実施例の検出装置は、気体取入口７、送
気管１、気体透過部３、戻り管２、検出部８、およびポ
ンプ９から構成されている。送気管１は水中の複数の任
意の位置で分岐され、その先に気体透過部３が設けられ
ている。それぞれの気体透過部３の出口側から戻り管２
が出ており、戻り管２は検出部８を経由してポンプ９に
接続されている。気体透過部３は、図１に示したよう
に、気体透過膜４が設けられており、この気体透過膜を
透過して気体透過部３の内部の気相に入った水中のガス
成分は、戻り管２で検出部８に輸送され、検出される。The detection apparatus of this embodiment comprises a gas intake 7, an air supply pipe 1, a gas permeation unit 3, a return pipe 2, a detection unit 8 and a pump 9. The air supply pipe 1 is branched at a plurality of arbitrary positions in water, and a gas permeable portion 3 is provided at the end thereof. Return pipes 2 from the outlet side of each gas permeable portion 3
And the return pipe 2 is connected to the pump 9 via the detector 8. As shown in FIG. 1, the gas permeable part 3 is provided with a gas permeable film 4, and the gas component in the water that has penetrated the gas permeable film and entered the gas phase inside the gas permeable part 3 is It is transported to the detection unit 8 by the return pipe 2 and detected.
【００１３】本実施例では、海中に垂直方向に配置した
一本の送気管１に気体透過部３を３箇所設けており、異
なる３箇所の深さでガス成分を検出できる。ポンプ９は
戻り管２の出口側に設置され、気体取入口７から清浄気
体を取り込む、いわゆる吸引式の構造になっているが、
気体取入口７側にポンプ９を設置して清浄空気を送気す
る送気式の構造でもよい。In this embodiment, one gas pipe 1 vertically arranged in the sea is provided with three gas permeation portions 3 so that the gas components can be detected at three different depths. The pump 9 is installed on the outlet side of the return pipe 2 and has a so-called suction type structure for taking in clean gas from the gas inlet 7.
A pump 9 may be installed on the gas intake 7 side to supply clean air.
【００１４】図３は吸引式の構造を有する検出部８を示
す図である。FIG. 3 is a diagram showing a detection unit 8 having a suction type structure.
【００１５】この検出部は、検出器６、データ処理部１
０、サンプル切替部１１、ガス採取口１２、およびバイ
パス１３から構成されている。図２の気体透過部からの
戻り管は全てサンプル切替部１１に接続されている。検
出器６の入り口側の配管の先端部に設けられたガス採取
口１２は、サンプル切替部１１の何れか１つの戻り管と
接続され、戻り管の気相を検出器６に送ることができ
る。サンプル切替部１１において、ガス採取口１２と接
続する戻り管２を逐次切り替えられる構造になってお
り、各戻り管の気相中のガス成分を逐次測定することが
できる。This detection unit includes a detector 6 and a data processing unit 1.
0, a sample switching unit 11, a gas sampling port 12, and a bypass 13. All the return pipes from the gas permeation section of FIG. 2 are connected to the sample switching section 11. The gas sampling port 12 provided at the tip of the pipe on the inlet side of the detector 6 is connected to any one return pipe of the sample switching unit 11, and the gas phase of the return pipe can be sent to the detector 6. . The sample switching unit 11 has a structure in which the return pipe 2 connected to the gas sampling port 12 can be sequentially switched, and the gas component in the gas phase of each return pipe can be sequentially measured.
【００１６】ガス採取口１２の接続データと測定データ
がデータ処理部１０に取り込まれて、各戻り管に対応す
る気体透過部近傍でのガス成分の測定結果が逐次出力さ
れる。各戻り管２の気相が連続的に流れるように、サン
プル切替部１１の内部は気密構造になっており、その出
口側はバイパス１３を介してポンプ９に接続されてい
る。また、検出器６の出口側もポンプ９に接続されてい
る。The connection data of the gas sampling port 12 and the measurement data are fetched by the data processing section 10, and the measurement results of the gas components near the gas permeation section corresponding to each return pipe are sequentially output. The inside of the sample switching unit 11 has an airtight structure so that the gas phase of each return pipe 2 continuously flows, and its outlet side is connected to the pump 9 via a bypass 13. The outlet side of the detector 6 is also connected to the pump 9.
【００１７】送気式の構造を有する検出装置の場合、戻
り管２と検出器６の出口側は大気解放でよい。In the case of a detection device having an air feeding type structure, the return pipe 2 and the outlet side of the detector 6 may be open to the atmosphere.
【００１８】図４は本発明の検出装置の第２の実施例を
示す図である。FIG. 4 is a diagram showing a second embodiment of the detecting device of the present invention.
【００１９】本実施例の検出装置は、原油を採掘するた
めの海上基地の油井１４の周囲に、任意の複数の位置に
気体透過部３を配置した複数の送気管１を配置してい
る。各々の気体透過部３からの戻り管２は、検出部８に
接続されている（図を見やすくするために、大部分の戻
り管は省略されている）。このように気体透過部３を３
次元的に配置して、それぞれの位置でのガス成分の検出
を行うことにより、油井１４その他の部分からの原油の
漏洩、および漏洩箇所を迅速に検出できた。In the detection apparatus of this embodiment, a plurality of gas pipes 1 having gas permeation portions 3 arranged at arbitrary plural positions are arranged around an oil well 14 of a marine base for mining crude oil. The return pipe 2 from each gas permeation part 3 is connected to the detection part 8 (most of the return pipes are omitted for clarity of the drawing). In this way, the gas permeable part 3 is
By arranging in a three-dimensional manner and detecting the gas component at each position, the leak of crude oil from the oil well 14 and other parts and the leaked part could be detected quickly.
【００２０】図５は本発明の検出装置の第３の実施例を
示す断面図である。FIG. 5 is a sectional view showing a third embodiment of the detector of the present invention.
【００２１】気体透過部３を海水中に長期間設置し、連
続使用すると生物付着等により、気体透過膜４が閉塞し
て正常に機能しなくなる。従って、閉塞の原因になって
いる付着物を気体透過膜４から除去しなければならな
い。その方法として、気体透過部３内部を高圧にして、
気体透過膜４を通して内部ガスを外側に吹き出させて付
着物を除去する、いわゆる、逆洗が有効である。これを
実現するために、本実施例の装置では、気体取入口７側
に高圧ガス供給部１５が設けられており、送気管１を通
して気体透過部３へ高圧ガスを供給し、かつ戻り管２の
出口側に設けられた開閉バルブ１６を閉じることによ
り、気体透過部３を高圧に保持できる。定期的、あるい
は気体透過膜４の閉塞が起こる前に逆洗作業を行うこと
により、気体透過膜４を信頼性高く、長期間、安定的に
使用することができた。When the gas permeable portion 3 is installed in seawater for a long time and continuously used, the gas permeable membrane 4 is clogged due to the adherence of organisms and the like, and the gas permeable portion 4 does not function normally. Therefore, it is necessary to remove the deposits that cause the blockage from the gas permeable membrane 4. As the method, the inside of the gas permeation part 3 is made high pressure,
The so-called backwashing is effective in which the internal gas is blown out through the gas permeable film 4 to remove the deposits. In order to realize this, in the apparatus of the present embodiment, a high pressure gas supply unit 15 is provided on the gas intake 7 side, supplies high pressure gas to the gas permeation unit 3 through the air supply pipe 1, and returns the return pipe 2 By closing the on-off valve 16 provided on the outlet side of the gas permeation section 3, the gas permeation section 3 can be maintained at high pressure. By performing the backwashing operation periodically or before the gas permeable membrane 4 is blocked, the gas permeable membrane 4 can be used reliably and stably for a long period of time.
【００２２】[0022]
【発明の効果】以上に説明したように本発明の水中ガス
成分の検出方法および装置によれば、原油や天然ガスの
漏洩を迅速に検出できるだけでなく、漏洩箇所も迅速に
特定できる。また、気体透過膜の閉塞を防止できる逆洗
の機能を有するため、信頼性高く、長期間、安定的に使
用できる。As described above, according to the method and apparatus for detecting a gas component in water of the present invention, not only a leak of crude oil or natural gas can be detected quickly, but also a leak location can be specified quickly. In addition, since it has a backwash function that can prevent the gas permeable membrane from being blocked, it can be used reliably and stably for a long period of time.
【図１】本発明の原理を説明するための図である。FIG. 1 is a diagram for explaining the principle of the present invention.
【図２】本発明の第１の実施例を説明するための図であ
る。FIG. 2 is a diagram for explaining the first embodiment of the present invention.
【図３】本発明の検出装置の検出部を説明するための図
である。FIG. 3 is a diagram for explaining a detection unit of the detection device of the present invention.
【図４】本発明の第２の実施例を説明するための図であ
る。FIG. 4 is a diagram for explaining a second embodiment of the present invention.
【図５】本発明の第３の実施例を説明するための図であ
る。FIG. 5 is a diagram for explaining a third embodiment of the present invention.
【図６】従来の技術を説明するための図である。FIG. 6 is a diagram for explaining a conventional technique.
１ 送気管 ２ 戻り管 ３ 気体透過部 ４ 気体透過膜 ５ ガス成分 ６ 検出器 ７ 気体取入口 ８ 検出部 ９ ポンプ １０ データ処理部 １１ サンプル切替部 １２ ガス採取口 １３ バイパス １４ 油井 １５ 高圧ガス供給部 １６ 開閉バルブ １７ 気体透過膜チューブ 1 Air Supply Pipe 2 Return Pipe 3 Gas Permeation Portion 4 Gas Permeation Membrane 5 Gas Component 6 Detector 7 Gas Intake Port 8 Detection Portion 9 Pump 10 Data Processing Portion 11 Sample Switching Portion 12 Gas Collection Port 13 Bypass 14 Oil Well 15 High Pressure Gas Supply Portion 16 Open / close valve 17 Gas permeable membrane tube
Claims (4)
する気体透過部を配置した送気管を水中に設置して、各
々の気体透過部内部の気相中のガス成分を戻り管で検出
器に送り、この検出器で前記ガス成分を測定することに
より、各々の気体透過部近傍の水中のガス成分を検出す
ることを特徴とする水中ガス成分の検出方法。1. An air supply pipe having a gas permeable portion for permeable to gas components in water at arbitrary positions is installed in water, and gas components in a gas phase inside each gas permeable portion are returned to the return pipe. A method for detecting a gas component in water, characterized in that the gas component in water in the vicinity of each gas permeation portion is detected by sending the gas component to a detector and measuring the gas component with this detector.
数の位置で分岐された送気管と、 この送気管の分岐された位置にそれぞれ設けられ、水中
のガス成分を透過する複数の気体透過部と、 これら複数の気体透過部のそれぞれの出口側に接続さ
れ、各々の気体透過部内部のガス成分を輸送する複数の
戻り管と、 これら戻り管を経由して輸送されてきたガス成分を検出
する検出部と、を備えることを特徴とする水中ガス成分
の検出装置。2. A gas intake for taking in gas, an air supply pipe connected to the gas intake, installed in water, and branched at arbitrary plural positions, and respectively at the branched positions of this air supply pipe. A plurality of gas permeation parts that are provided and permeate gas components in water, and a plurality of return pipes that are connected to the respective outlet sides of the plurality of gas permeation parts and that transport gas components inside each gas permeation part, A detector for detecting a gas component transported through these return pipes, and a detector for a gas component in water.
逐次接続するサンプル切替部と、 前記配管に接続され、前記戻り管および前記配管を経由
して輸送されてきたガス成分を検出して測定データを出
力する検出器と、 前記サンプル切替部から前記ガス採取口の接続データ
を、前記検出器から測定データを取り込み、各気体透過
部近傍でのガス成分の測定結果を逐次出力するデータ処
理部と、を有することを特徴とする請求項２記載の水中
ガス成分の検出装置。3. A sample switching unit for sequentially connecting a gas sampling port of a pipe to any one of the plurality of return pipes, and a detector connected to the pipe and passing through the return pipe and the pipe. A detector that outputs the measurement data by detecting the gas component that has been transported, and connection data of the gas sampling port from the sample switching unit, captures the measurement data from the detector, and near each gas permeation unit. The data processing unit which sequentially outputs the measurement result of the gas component according to claim 3, and the detection device for the underwater gas component according to claim 2.
給部と、 前記各戻り管に設けられた複数の開閉バルブとを備え、 前記開閉バルブを閉じた状態で、前記高圧ガス供給部か
ら送気して前記気体透過部の内部を高圧に保持して、前
記気体透過部を逆洗することを特徴とする請求項２また
は３記載の水中ガス成分の検出装置。4. A high-pressure gas supply unit provided on the gas intake side, and a plurality of on-off valves provided on each of the return pipes, wherein the high-pressure gas supply unit is in a state in which the on-off valves are closed. 4. The apparatus for detecting a gas component in water according to claim 2, wherein the gas permeable portion is backwashed by keeping the inside of the gas permeable portion at a high pressure by sending air from the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5079961A JP2526778B2 (en) | 1993-04-07 | 1993-04-07 | Detector for gas components in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5079961A JP2526778B2 (en) | 1993-04-07 | 1993-04-07 | Detector for gas components in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06294720A true JPH06294720A (en) | 1994-10-21 |
| JP2526778B2 JP2526778B2 (en) | 1996-08-21 |
Family
ID=13704910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5079961A Expired - Lifetime JP2526778B2 (en) | 1993-04-07 | 1993-04-07 | Detector for gas components in water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2526778B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165738A (en) * | 1981-04-06 | 1982-10-12 | Kanegafuchi Chem Ind Co Ltd | Device for detecting vaporizing component in liquid and its use |
| JPH01233342A (en) * | 1988-03-15 | 1989-09-19 | Unyusho Kowan Gijutsu Kenkyusho | Method and apparatus for multipointed sampling of reagent solution |
| JPH0415537A (en) * | 1990-05-10 | 1992-01-20 | Kowa Co | Multipoint measuring instrument |
-
1993
- 1993-04-07 JP JP5079961A patent/JP2526778B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165738A (en) * | 1981-04-06 | 1982-10-12 | Kanegafuchi Chem Ind Co Ltd | Device for detecting vaporizing component in liquid and its use |
| JPH01233342A (en) * | 1988-03-15 | 1989-09-19 | Unyusho Kowan Gijutsu Kenkyusho | Method and apparatus for multipointed sampling of reagent solution |
| JPH0415537A (en) * | 1990-05-10 | 1992-01-20 | Kowa Co | Multipoint measuring instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2526778B2 (en) | 1996-08-21 |
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| Date | Code | Title | Description |
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| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960416 |