JPH01265136A - Instrument for measuring gas dissolved in oil - Google Patents
Instrument for measuring gas dissolved in oilInfo
- Publication number
- JPH01265136A JPH01265136A JP63095238A JP9523888A JPH01265136A JP H01265136 A JPH01265136 A JP H01265136A JP 63095238 A JP63095238 A JP 63095238A JP 9523888 A JP9523888 A JP 9523888A JP H01265136 A JPH01265136 A JP H01265136A
- Authority
- JP
- Japan
- Prior art keywords
- air
- oil
- gas
- pump
- container
- 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.)
- Pending
Links
- 230000005587 bubbling Effects 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- 238000005259 measurement Methods 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は油中溶存ガス測定装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a dissolved gas measuring device in oil.
（従来の技術）
油中に溶存しているガスを測定するのに、従来では次の
第１および第２の測定方法が実施されている。(Prior Art) Conventionally, the following first and second measurement methods have been used to measure gas dissolved in oil.
その第１は、現場で油入機器から油を抜き取り、密閉容
器に収納し、これを分析装置がある所まで輸送する。そ
して分析室で採油したサンプルを分析器に挿入し、まず
油中溶存ガスを抽出する。抽出されたガスをガスクロマ
トグラフ分析を行ない、溶存ガスの種類と量を計測する
。The first step is to extract oil from oil-filled equipment on site, store it in a sealed container, and transport it to the location where the analyzer is located. The oil sample taken in the analysis room is then inserted into an analyzer, and the dissolved gases in the oil are first extracted. The extracted gas is analyzed by gas chromatography to measure the type and amount of dissolved gas.
その第２は、油入電気機器の採油井に透過膜フランジを
連結し、その外側にガス室を設け、油中ガスが透過膜を
介してガス室を出た所をセンサで検出して計測する。The second method is to connect a permeable membrane flange to the oil extraction well of oil-filled electrical equipment, set up a gas chamber on the outside of the flange, and use a sensor to detect and measure the point where the gas in the oil exits the gas chamber via the permeable membrane. do.
（発明が解決しようとする問題点）
従来の第１の方法によると、採油から分析測定まで長時
間を必要とし、その測定結果が出るのが遅いし、輸送中
にガスが抜けることがあるため、データの信頼性が悪く
なる。また分析装置が高価であり１分析器作が煩雑かつ
熟練を要する。(Problems to be solved by the invention) According to the first conventional method, it takes a long time from oil extraction to analysis and measurement, the measurement results are slow to come out, and gas may escape during transportation. , the reliability of the data deteriorates. In addition, the analyzer is expensive, and making one analyzer is complicated and requires skill.
第２の方法によると、ガスの透過時定数が３日以上とな
り、迅速な評価は不可能であり、また油入機器毎に透過
膜フランジ、ガス室を設置しなければならないため、油
入機器の生産価格が高くなる。According to the second method, the gas permeation time constant is 3 days or more, making quick evaluation impossible.Also, since a permeable membrane flange and a gas chamber must be installed for each oil-filled device, production price increases.
この発明は油中溶存ガスを短時間に、しかも簡単な構成
によって測定を可能にすることを目的とする。The object of this invention is to enable measurement of gas dissolved in oil in a short time and with a simple configuration.
（問題点を解決するための手段）
この発明は試料油を入れる容器と、試料油へ空気を吹き
込む循環用のポンプと、ポンプによって吹き込まれた空
気によって気泡を発生する気泡発生器と、気泡に含まれ
ている油中溶存ガスの濃度を計測する計測装置とを備え
、この計測装置による計ｉｆ（！Ｉ後の空気を、二九が
前記ポンプによって再び試料油へ吹き込まれるように、
前記ポンプに送り込む手段を備えてなることを特徴とす
る。(Means for Solving Problems) This invention includes a container for storing sample oil, a circulation pump for blowing air into the sample oil, a bubble generator for generating bubbles by the air blown into the sample oil, and a bubble generator for generating bubbles by the air blown into the sample oil. and a measuring device that measures the concentration of dissolved gas in the oil, and the air after the measurement by this measuring device is blown into the sample oil again by the pump.
It is characterized by comprising means for feeding into the pump.
（作用）
吹き込み空気を試料油を収納している容器内から供給し
、試料油中に空気を吹き込んだあと、再び試料油の容器
に戻るという循環方式とすることにより、無駄な配管系
統が不必要となり、低コスト化が計れるとともに、コン
パクトな構成とすることができるようになる。また循環
方式としたことにより、測定値が安定するまでの時間、
すなわち測定時間が短縮されるようになる。(Function) By adopting a circulation system in which blown air is supplied from the container containing the sample oil, blown into the sample oil, and then returned to the sample oil container, unnecessary piping systems are eliminated. This makes it possible to reduce costs and achieve a compact configuration. In addition, by using the circulation method, the time it takes for the measured value to stabilize,
In other words, the measurement time is shortened.
（実施例）
この発明の実施例を図によって説明する。１は油入電気
機器から採取してきた試料油２が入れられる。密閉可能
の容器で、内部にはボールフィルタ、或いは管そのもの
などからなる気泡発生ｒ！３が設置されである。気泡発
生器３にはポンプ４を介して外部からバブリング用の空
気が導入されてくる。(Example) An example of the present invention will be described with reference to the drawings. 1 contains sample oil 2 collected from oil-filled electrical equipment. A sealable container with a ball filter or the tube itself inside to prevent air bubbles from forming. 3 is installed. Air for bubbling is introduced into the bubble generator 3 from the outside via a pump 4.
この空気によって気泡が発生する。気泡の中には試料油
２内に溶存しているガスが含まれている。This air generates bubbles. Gas dissolved in the sample oil 2 is contained in the bubbles.
気泡は容器１の上部に到達するまでに消える。その気泡
の中に含まれていた空気は、フィルタ５を経てセンサ６
に送られ、ここでこの空気中のガスが検出される。その
検出値はたとえば電気信号に変換され、所要の指示計に
指示される。The bubbles disappear by the time they reach the top of the container 1. The air contained in the bubbles passes through the filter 5 to the sensor 6.
The gas in the air is detected here. The detected value is converted into, for example, an electrical signal, and then sent to a required indicator.
７は試料油２を容器１に注入するための注入口である。7 is an injection port for injecting the sample oil 2 into the container 1.
この発明にしたがい、センサ６によって計測されたあと
の空気を、バブリング用の空気として。According to this invention, the air after being measured by the sensor 6 is used as air for bubbling.
ポンプ４によって再び気泡発生器３に送くるようにして
いる。The air is sent to the bubble generator 3 again by the pump 4.
なおここで計測対象の油中溶存ガスとしては。Here, the gas dissolved in oil that is being measured is:
水素、メタン、エチレン、アセチレン、 ＣＤ、 Ｃｏ
ｔなど、一般にガス分析が行なわれる成分単独もしくは
可燃性ガスなどがあげられる。したがってセンサとして
は、それに対応するセンサを用いればよい、たとえば水
素ガスを対象とする場合、ＳｎＯ。Hydrogen, methane, ethylene, acetylene, CD, Co
Examples include single components or combustible gases for which gas analysis is generally performed, such as t. Therefore, as a sensor, it is sufficient to use a corresponding sensor. For example, when the target is hydrogen gas, SnO.
を成分とし、 ５ｉｎ２膜により水素のみに応答するも
のを用いればよい。It is sufficient to use a material which has a 5in2 film as a component and responds only to hydrogen.
またフィルタ５としては、孔径０．２μｍ程度のものが
よい。The filter 5 preferably has a pore diameter of about 0.2 μm.
図に示す装置による計測は次のようにして行なう、最初
に注入ロアから、試料油２をたとえば２０ｍＱ程度だけ
注射器によって注入する。容器１を密閉した状態でポン
プ４を起動し、容器１、各管路内の空気を循環させる。Measurement using the apparatus shown in the figure is carried out as follows. First, sample oil 2 is injected by a syringe in an amount of, for example, about 20 mQ from the injection lower. With the container 1 sealed, the pump 4 is started to circulate the air in the container 1 and each pipe.
これによって気泡発生器３から気泡が発生し、それが液
面を上げ、ある程度まで上昇したら気泡が消え、再びポ
ンプ４を介して容器１内に導入される。As a result, bubbles are generated from the bubble generator 3, which raises the liquid level, and when the liquid level rises to a certain level, the bubbles disappear and are introduced into the container 1 via the pump 4 again.
試料油２内にガスが溶存していれば、気泡中にとり込ま
れ、センサ６によってその濃度が計測される。この計測
値が一定になったら計測を完了する。そのときの計測指
示値が求めるガス濃度である。If gas is dissolved in the sample oil 2, it will be incorporated into bubbles and its concentration will be measured by the sensor 6. The measurement is completed when this measured value becomes constant. The measurement instruction value at that time is the required gas concentration.
第２図は本発明者が行なった実験結果を示したものであ
る。ここでは容器ｌと配管容積を加えた値が２４０＋ａ
Ｑの二つの容器を用い、試料油量を４０ｍＱとし、更
にポンプ４による空気の吹き込み流速を、５０ａ＋Ｑ／
分、２００ｔａ Ｑ ／分、５００ａ＋ Ｑ ／分と変
化させた。また試料油中に濃度４００ｐｐｍの水素を添
加して実験を行なった。FIG. 2 shows the results of an experiment conducted by the inventor. Here, the value of container l and piping volume is 240+a
Using two containers Q, the amount of sample oil was set to 40 mQ, and the air blowing flow rate by pump 4 was set to 50a+Q/
min, 200ta Q/min, and 500a+Q/min. Further, an experiment was conducted by adding hydrogen at a concentration of 400 ppm to the sample oil.
同図から明らかなように、流速が遅いとき、たとえば５
０ａ＋ Ｑ ／分のときは、抽出ガス濃度が一定になる
まで、たとえば５分以上の長い時間が必要となる。これ
はおそらく容器１内で抽出ガスが層流となってセンサ６
に到達するためであると考えられる。したがって流速が
ｌｏｏｍ ｍ ／分以下では余り好ましくないといえる
。As is clear from the figure, when the flow velocity is slow, for example, 5
When the rate is 0a+Q/min, a long time of, for example, 5 minutes or more is required until the extracted gas concentration becomes constant. This is probably because the extracted gas becomes a laminar flow in the container 1 and the sensor 6
This is thought to be in order to reach . Therefore, it can be said that a flow rate of less than loom m/min is not very preferable.
これに対して流速が２００ｍ ｍ ／分の場合は、約２
分、５００ｍＬ”分の場合は約１．５分で抽出ガス濃度
が一定となることが判明する。On the other hand, when the flow rate is 200 mm/min, approximately 2
It turns out that the extracted gas concentration becomes constant in about 1.5 minutes in the case of 500 mL'' minutes.
なお容器１その他の空間の量と試料油量とは、濃度計測
において重要な要素であるが、気泡の消泡効果、センサ
６の感度から決定する必要があり、具体的には試料油量
１に対し空間の量を１〜２０程度にするとよい。The amount of space in the container 1 and other spaces and the amount of sample oil are important elements in concentration measurement, but they must be determined based on the defoaming effect of air bubbles and the sensitivity of the sensor 6. Specifically, the amount of sample oil 1 It is preferable to set the amount of space to about 1 to 20.
（発明の効果）
以上詳述したようにこの発明によれば、油中溶存ガスの
濃度測定にあたり、従来方法に比較して短時間で、しか
も簡単な構成によってその計測が可能となるといった効
果を奏する。(Effects of the Invention) As detailed above, according to the present invention, the concentration of dissolved gas in oil can be measured in a shorter time and with a simpler configuration than conventional methods. play.
第１図はこの発明の実施例を示す配置図、第２図は測定
時間に対するガス濃度の指示値を示す特性試験図である
。
１・・・容器、２・・・試料油、３・・・気泡発生器、
４・・・ポンプ、６・・・センサ、
躬２図
Ｊ・波吟開吟）FIG. 1 is a layout diagram showing an embodiment of the present invention, and FIG. 2 is a characteristic test diagram showing indicated values of gas concentration with respect to measurement time. 1... Container, 2... Sample oil, 3... Bubble generator,
4...Pump, 6...Sensor, Figure 2 J. Hagin Kaigin)
Claims (1)
環用のポンプと、前記ポンプによって吹き込まれた空気
によって気泡を発生する気泡発生器と、気泡に含まれて
いる油中溶存ガスの濃度を計測する計測装置とを備え、
前記計測装置による計測後の空気を、これが前記ポンプ
によって再び試料油へ吹き込まれるように、前記ポンプ
に送り込む手段を備えてなる油中溶存ガス測定装置。A container for storing sample oil, a circulation pump that blows air into the sample oil, a bubble generator that generates bubbles by the air blown by the pump, and a concentration of dissolved gas in the oil contained in the bubbles. Equipped with a measuring device to measure,
An apparatus for measuring dissolved gas in oil, comprising means for sending air measured by the measuring device to the pump so that the air is blown into the sample oil again by the pump.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63095238A JPH01265136A (en) | 1988-04-18 | 1988-04-18 | Instrument for measuring gas dissolved in oil |
| US07/333,401 US4944178A (en) | 1988-04-18 | 1989-04-05 | Apparatus and method for measuring dissolved gas in oil |
| CA000596784A CA1339796C (en) | 1988-04-18 | 1989-04-14 | Apparatus and method for measuring dissolved gas in oil |
| EP89303764A EP0338744B1 (en) | 1988-04-18 | 1989-04-17 | Apparatus and method for measuring dissolved gas in oil |
| KR1019890004899A KR910006228B1 (en) | 1988-04-18 | 1989-07-03 | Apparatus for method for measuring dissolved gas in oil |
| US07/510,845 US5127962A (en) | 1988-04-18 | 1990-04-18 | Method for cleaning apparatus used for measuring dissolved gas in oil |
| CA000616985A CA1338870C (en) | 1988-04-18 | 1995-02-16 | Method of cleaning apparatus for measuring dissolved gas in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63095238A JPH01265136A (en) | 1988-04-18 | 1988-04-18 | Instrument for measuring gas dissolved in oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01265136A true JPH01265136A (en) | 1989-10-23 |
Family
ID=14132182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63095238A Pending JPH01265136A (en) | 1988-04-18 | 1988-04-18 | Instrument for measuring gas dissolved in oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01265136A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811830B2 (en) * | 1979-07-17 | 1983-03-04 | 味の素株式会社 | Manufacturing method for retort food |
| JPH01227045A (en) * | 1988-03-07 | 1989-09-11 | Hitachi Ltd | Detecting apparatus of gas for oil-immersed apparatus, collecting apparatus of gas in oil and detecting method of gas |
-
1988
- 1988-04-18 JP JP63095238A patent/JPH01265136A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811830B2 (en) * | 1979-07-17 | 1983-03-04 | 味の素株式会社 | Manufacturing method for retort food |
| JPH01227045A (en) * | 1988-03-07 | 1989-09-11 | Hitachi Ltd | Detecting apparatus of gas for oil-immersed apparatus, collecting apparatus of gas in oil and detecting method of gas |
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