JPS60253842A - Apparatus for monitoring dissolved gas in oil - Google Patents
Apparatus for monitoring dissolved gas in oilInfo
- Publication number
- JPS60253842A JPS60253842A JP59108583A JP10858384A JPS60253842A JP S60253842 A JPS60253842 A JP S60253842A JP 59108583 A JP59108583 A JP 59108583A JP 10858384 A JP10858384 A JP 10858384A JP S60253842 A JPS60253842 A JP S60253842A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- gas
- extraction chamber
- gas extraction
- insulating oil
- 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
- 238000012544 monitoring process Methods 0.000 title claims description 4
- 238000000605 extraction Methods 0.000 claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000003134 recirculating effect Effects 0.000 abstract 1
- 238000012806 monitoring device Methods 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/2841—Gas in oils, e.g. hydrogen in insulating oils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、油中溶解ガス監視装置に関し、特にその測
定用に供される絶縁油中の溶解ガスの油入電気機器タン
ク内への侵入防止に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a monitoring device for dissolved gas in oil, and in particular to a device for preventing intrusion of dissolved gas in insulating oil into a tank of oil-filled electrical equipment used for measuring the device. It is related to.
−〔従来技術〕
従来、油入電気機器の内部異常現象によって発生するガ
スを監視し、内部異常現象を早期に検知するための油中
溶解ガス監視装置として、例えば特公昭！； ｇ −！
ｒｇｇ０２号公報に記載されたものが知られている。こ
の油中溶解ガス監視装置は、油入電気機器タンクに両端
が接続されている絶縁油循環通路の途中に、油中溶解ガ
スを検知するガス検知室が設けられており、このガス検
知室内の上部空間の油中溶解ガス成分をガス検知素子で
測定するものである。この油中溶解ガス監視装置の場合
、ガス検知室内の上部空間は、絶縁油循環通路に取付け
られた、絞り弁、絶縁油循環用のポンプ −等の調節に
より減圧下で生じるようになっており、その上部空間内
で発泡した油中溶解ガスが、絶縁油循環通路を通って油
入電気機器タンク内に侵入し、油入電気機器タンク響を
与えるため、特別に消泡手段を講じなければならないと
いう欠点があった。- [Prior art] Conventionally, the gas dissolved in oil monitoring device for monitoring gas generated due to internal abnormalities in oil-filled electrical equipment and detecting internal abnormalities at an early stage has been used, for example, by Tokkosho! ;g-!
The one described in RGG02 is known. This gas-in-oil monitoring device is equipped with a gas detection chamber for detecting gas dissolved in oil in the middle of an insulating oil circulation path that is connected to an oil-filled electrical equipment tank at both ends. The gas component dissolved in the oil in the upper space is measured using a gas detection element. In the case of this dissolved gas monitoring device in oil, the upper space inside the gas detection chamber is created under reduced pressure by adjusting the throttle valve, the insulating oil circulation pump, etc. installed in the insulating oil circulation passage. Dissolved gas in oil that foams in the upper space enters the oil-filled electrical equipment tank through the insulating oil circulation passage and causes noise in the oil-filled electrical equipment tank, so special defoaming measures must be taken. There was a drawback that it was not possible.
この発明は、上記の欠点を除去する目的でなされたもの
で、絶縁油が滞留するガス抽出室に、このガス抽出室と
油入電気機器タンクとの間で絶縁油を循環させる絶縁油
循環通路と、ガス抽出室の内部に空間を生じさせる空間
発生手段とを設け、また油噴出配管の基端部を絶縁油循
環通路に接続させ、フィルタを設けた先端部をガス抽出
室内に臨まさせ、またガス抽出室にガス検知室を連通さ
せ、空間で発泡した油中溶解ガスをガス検知室に送入さ
せることにより、ガス抽出室内で発泡した絶縁油中の溶
解ガスが、油入電気機器タンク内に侵入して電気機器に
悪影響を与えることのない油中溶解ガス監視装置を提供
するものである。This invention was made with the aim of eliminating the above-mentioned drawbacks, and includes an insulating oil circulation passage that circulates insulating oil between the gas extraction chamber and the oil-filled electrical equipment tank, in which the insulating oil accumulates. and a space generating means for creating a space inside the gas extraction chamber, and the base end of the oil jetting pipe is connected to the insulating oil circulation passage, and the distal end provided with the filter is made to face the gas extraction chamber, In addition, by communicating the gas detection chamber with the gas extraction chamber and sending the dissolved gas in the oil foamed in the space into the gas detection chamber, the dissolved gas in the insulating oil foamed in the gas extraction chamber can be transferred to the oil-filled electrical equipment tank. An object of the present invention is to provide a monitoring device for gas dissolved in oil that does not enter the interior of the vehicle and adversely affect electrical equipment.
以下、この発明の油中溶解ガス監視装置（以下、監視装
置と略称する。）の一実施例を図を用いて説明する。図
はこの発明の一実施例を示す構造説明図であって、油入
電気機器タンク（以下、タンクと略称する。）／には電
気機器（図示せず）が絶縁油コで浸漬されて収納されて
いる。タンク／の近傍には絶縁油コが滞留するガス抽出
室３と、このガス抽出室３に連通ずるガス検知室ダ等が
設けられている。ガス抽出室３とタンクｌどの間には、
両者３，７間で絶縁油コが循環する通路となる絶縁油循
環通路が形成されている。この絶縁油循環通路は、油送
出配管！、油送人配管６により構成されている。油送出
配管Ｓの途中の三方切換弁りには、油噴出配管ｇの基端
部が取付けられている。この油噴出配管ｔの先端部には
、フィルタデが設けられており、このフィルタデはガス
抽出室３内に臨んだ状態になっている。油送出配管５、
油送人配管乙にはそれぞれ開閉弁／’０ 、 ／ ／が
取付ゆられている。また、油送人配管乙には絶縁油コを
循環させるポンプ／コが取付けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the dissolved gas in oil monitoring device (hereinafter abbreviated as the monitoring device) of the present invention will be described below with reference to the drawings. The figure is a structural explanatory diagram showing one embodiment of the present invention, in which electrical equipment (not shown) is stored in an oil-filled electrical equipment tank (hereinafter abbreviated as tank)/within an insulating oil tank. has been done. In the vicinity of the tank, a gas extraction chamber 3 in which insulating oil is retained, and a gas detection chamber communicating with the gas extraction chamber 3 are provided. Between the gas extraction chamber 3 and the tank l,
An insulating oil circulation passage is formed between both 3 and 7, through which insulating oil circulates. This insulating oil circulation passage is oil delivery piping! , an oil delivery pipe 6. The base end of the oil jetting pipe g is attached to a three-way switching valve in the middle of the oil sending pipe S. A filter is provided at the tip of the oil jetting pipe t, and this filter faces into the gas extraction chamber 3. oil delivery pipe 5,
On-off valves /'0 and / are installed on oil carrier pipe B, respectively. In addition, a pump/co for circulating insulated oil is attached to the oil carrier pipe B.
ガス抽出室３の下部には、ガス抽出室３内に空間を生じ
させる空間発生手段が設けられている。A space generating means for creating a space within the gas extraction chamber 3 is provided at the lower part of the gas extraction chamber 3.
この空間発生手段は、ガス抽出室３内の容積を変動させ
るベローズ／３と、このベローズ／３を往復動させるベ
ローズ駆動部／ＩＩとにより構成されている。なお、１
５は液面検知器でガス抽出室３内での絶縁油−〇液面高
さを検知するものである。This space generating means is comprised of a bellows/3 that changes the volume within the gas extraction chamber 3, and a bellows drive section/II that reciprocates this bellows/3. In addition, 1
Reference numeral 5 denotes a liquid level detector which detects the height of the insulating oil-〇 liquid level within the gas extraction chamber 3.
ガス抽出室３とガス検知室りとの間は、ガス配管／６で
接続されている。このガス配管／６の途中には、ガス抽
出室３内に空気を導く空気配管〆７が接続されている。The gas extraction chamber 3 and the gas detection chamber are connected by a gas pipe/6. An air pipe 7 that guides air into the gas extraction chamber 3 is connected in the middle of this gas pipe/6.
ガス配管／６、空気配管／７の途中には、開閉弁／ｇ、
／９，１０．コ／がそれぞれ取付けられている。開閉弁
／ ｑ’＋ 、２０間には油面の高さを検知する油面検
知器、２ユが取付けられている。In the middle of gas piping/6 and air piping/7, there are on-off valves/g,
/9,10. / are installed respectively. An oil level detector, 2 units, is installed between the on-off valve/q'+ and 20 to detect the height of the oil level.
ガス検知者μ内には、ガス抽出室３内の絶練油コ中の溶
解ガス（以下、油中溶解ガスと略称する。）が送られる
ようになって（・る。この油中溶解ガスは、ガス検知室
夕内のガス検知素子、１３と検知器本体、２グとでその
成分が測定されるようになっている。なお、このガス検
知素子２３と検知器本体、２ぐとは、空気中の可燃性ガ
スを検知する機構になっている。Dissolved gas in the oil tank in the gas extraction chamber 3 (hereinafter abbreviated as dissolved gas in oil) is sent into the gas detector μ. Its components are measured by the gas detection element 13 in the gas detection chamber, the detector body, and the 2-gauge. It has a mechanism to detect flammable gas in the air.
次に、上記構成の監視装置の操作手順について説明する
。まず、ベローズ駆動部／ｌＩを作動させてベローズ／
３を上限位置まで上動させた後、油送出配管Ｓ、油送人
配管６、油噴出配管ｇ、ガス抽出室３等を・絶縁油コで
充満させる。次に、三方切換弁７を絶縁油コが油噴出配
管ｇに送入しないように切り換え、開閉弁１０．／ｌを
開いて、タンク／とガス抽出室３との間を絶縁油コが循
環するようにボンダ／２を作動させる。この循環中、絶
縁油循環通路、油噴出配管ざおよびガス抽出室３内に絶
縁油ａで充満されているので、油中溶解ガスがそれらの
通路内で発泡するようなことはない。こうして絶縁油コ
な循環させることにより、タンク／内の絶縁油ユは完全
混合されることになり、その後タンク／内から抜き取っ
た絶縁油λは、タンク／内の絶縁油＝を代表する試料に
なっている。その後、ポンプ１２を停止し、開閉弁１０
゜ｌ／を閉じる。なお絶縁油ユを完全混合させるのに、
絶縁油ユを、油送出配管Ｓの一部→油噴出配管ｇ→油送
人配管６→タンク／を通って循環させてもよい。この場
合、絶縁油λ中の異物は、フィルタデを通過するときに
除去される。Next, the operating procedure of the monitoring device having the above configuration will be explained. First, operate the bellows drive section /lI to
3 to the upper limit position, fill the oil delivery pipe S, oil feeder pipe 6, oil jet pipe g, gas extraction chamber 3, etc. with an insulated oil pipe. Next, the three-way switching valve 7 is switched so that the insulated oil is not sent into the oil spouting pipe g, and the on-off valve 10. /1 is opened and the bonder /2 is operated so that the insulating oil tank circulates between the tank / and the gas extraction chamber 3. During this circulation, the insulating oil circulation passage, the oil jet piping, and the gas extraction chamber 3 are filled with the insulating oil a, so that the gas dissolved in the oil does not bubble in these passages. By circulating the insulating oil in this way, the insulating oil in the tank is completely mixed, and the insulating oil λ extracted from the tank is then used as a sample representative of the insulating oil in the tank. It has become. After that, the pump 12 is stopped, and the on-off valve 10
Close ゜l/. In addition, to completely mix the insulating oil,
The insulating oil may be circulated through a part of the oil delivery pipe S -> the oil jet pipe g -> the oil delivery pipe 6 -> the tank/. In this case, foreign matter in the insulating oil λ is removed when it passes through the filter.
上記の状態で、ベローズ／３をベローズ駆動部／１１．
により下動させ、ガス抽出室３内の上部に減圧下の空間
Ａを生じさせる。次に、三方切換弁７を切り換え、かつ
開閉弁１０を開けて、油噴出配管ｔとタンク／とを油送
出配管５を介して連通させ、絶縁油ユを油噴出配管ｇの
フィルタｇから、減圧下の空間人に噴出させる。このと
きに、絶縁油コは飛散し、油中溶解ガスは空間Ａ内に強
制的に抽出される。また、絶縁油λがフィルタざを通過
したときに、絶縁油コ中の異物は除去される。In the above state, the bellows/3 is connected to the bellows drive section/11.
The gas extraction chamber 3 is moved downward to create a space A under reduced pressure in the upper part of the gas extraction chamber 3. Next, the three-way switching valve 7 is switched, the on-off valve 10 is opened, and the oil jetting pipe t and the tank are communicated with each other via the oil sending pipe 5, and the insulating oil is passed through the filter g of the oil jetting pipe g. Make people squirt in space under reduced pressure. At this time, the insulating oil is scattered and the gas dissolved in the oil is forcibly extracted into the space A. Furthermore, when the insulating oil λ passes through the filter, foreign matter in the insulating oil is removed.
そして、ガス抽出室Ｊ内での絶縁油コの油面高さを油面
検知器／りが検知した時点で、絶縁油ユが油噴出配管ｇ
に送入しないように三方切換弁りを切り換え、かつ開閉
弁／θを閉じる。When the oil level detector detects the oil level height of the insulating oil pipe in the gas extraction chamber J, the insulating oil pipe
Switch the three-way switching valve so that it does not feed into the tank, and close the on-off valve /θ.
こうして、抽出された空間Ａ内の油中溶解ガスは、その
成分測定用としてガス検知室ｑ内に供されるが、その前
に、開閉弁／り、コθ１．２／を開放し、開閉弁７ｇを
閉じて、清浄な空気を空気配−管／７、ガス配管／２を
通って空間Ａ内に流入さと
せて、開閉弁ツーを閉じ、油中溶解ガスヶ空気との混合
ガスを生じさせる。次に、開閉弁７ｇを開け、三方切換
弁７を切り換えて、タンク／内の絶縁油コを油送出配管
Ｓを通ってガス抽出室３内に流入させ、混合ガスをガス
検知室りに送入させる。In this way, the dissolved gas in the oil in the extracted space A is supplied to the gas detection chamber q for measurement of its components, but before that, the on-off valves θ1.2/ are opened and the on-off valves are opened and closed. Close valve 7g and let clean air flow into space A through air pipe/7 and gas pipe/2, close on-off valve 2, and generate a mixed gas of gas dissolved in oil and air. let Next, open the on-off valve 7g and switch the three-way switching valve 7 to allow the insulated oil in the tank to flow into the gas extraction chamber 3 through the oil delivery pipe S, and send the mixed gas to the gas detection chamber. let them in.
この混合ガス中の油中溶解ガスの成分は、ガス検知素子
、２３、検知器本体−！ｌで測定される。そして、ガス
抽出室３内に流入された絶縁油２の油面高さを油面検知
器２．２で検知したときに、開閉弁−Σ
１０、／ｌ、／デ１．２０を閉じ、油中溶解ガスの成分
測定は終了する。The components of the gas dissolved in oil in this mixed gas are the gas detection element, 23, the detector body -! It is measured in l. When the oil level detector 2.2 detects the level of the insulating oil 2 flowing into the gas extraction chamber 3, the on-off valve -Σ10,/l,/de1.20 is closed. The measurement of the components of dissolved gas in oil is completed.
なお、油中溶解ガスと空気との混合ガスをガス検知室ダ
に送り込むのに、上記実施例ではガス抽出室３内に絶縁
油２を送入して行ったが、ベローズ駆動部／グによりベ
ローズ／３を上動させてもよい。Note that in order to send the mixed gas of gas dissolved in oil and air to the gas detection chamber DA, insulating oil 2 was fed into the gas extraction chamber 3 in the above embodiment, but the bellows drive unit Bellows/3 may also be moved upward.
また、上記実施例では空間発生手段として、ベローズ／
３とベローズ駆動部／４ｔとより構成されているものに
ついて説明したカ；、これに限定されることなく、例え
ばシリンダ状のガス抽出室にピストン状のものを駆動さ
せてガス抽出室内に減圧下の空間を生じさせてもよい。In addition, in the above embodiment, the bellows/
3 and a bellows drive unit/4t; however, the present invention is not limited to this; for example, by driving a piston-shaped member into a cylindrical gas extraction chamber to create a vacuum in the gas extraction chamber. It is also possible to create a space of
以上説明したようにこの発明の油中溶解ガス監視装置に
よれば、絶縁油が滞留するガス抽出室に、このガス抽出
室と油入電気機器タンクとの間で絶縁油を循環させる絶
縁油循環通路と、ガス抽出室の内部に空間を生じさせる
空間発生手段とを設げ、また油噴出配管の基端部を絶縁
油循環通路に接続させ、空間で発泡した油中溶解ガスを
ガス検知室に送入させることにより、ガス抽出室内で発
泡した絶縁油中の溶解ガスが、油入電気機器タンク内に
侵入して電気機器に悪影響を与えるようなことはない。As explained above, according to the dissolved gas in oil monitoring device of the present invention, the insulating oil circulation system circulates the insulating oil between the gas extraction chamber and the oil-filled electrical equipment tank in the gas extraction chamber where the insulating oil stays. A passageway and a space generating means for creating a space inside the gas extraction chamber are provided, and the base end of the oil jetting pipe is connected to an insulating oil circulation passage, so that the dissolved gas in the oil foamed in the space is transferred to the gas detection chamber. This prevents the dissolved gas in the insulating oil foamed in the gas extraction chamber from entering the oil-filled electrical equipment tank and adversely affecting the electrical equipment.
図はこの発明の油中溶解ガス監視装置の一実施例を示す
構造説明図である。
／・・油入電気機器タンク、コ・・絶縁油、３・・ガス
抽出室、Ｓ・・油送出配管（絶縁油循環通路）、６・・
油送人配管（絶縁油循環通路）、ｇ・・油噴出配管、９
・・フィルタ、／３・・ベローズ（空間発生手段）、／
グ・・ベローズ駆動部（空間発生手段）、２３・・ガス
検知素子。The figure is a structural explanatory diagram showing an embodiment of the dissolved gas in oil monitoring device of the present invention. /...Oil-filled electrical equipment tank, K...Insulating oil, 3...Gas extraction chamber, S...Oil delivery piping (insulating oil circulation passage), 6...
Oil carrier piping (insulating oil circulation passage), g...Oil spout piping, 9
... Filter, /3 ... Bellows (space generation means), /
23...Bellows drive unit (space generating means), 23...Gas detection element.
Claims (1)
電気機器タンク内の絶縁油が循環する通路となる絶縁油
循環通路と、この絶縁油循環通路の途中に設けられてお
り、絶縁油が滞留するガス抽出室と、このガス抽出室に
設けられており、ガス抽出室の内部に空間を生じさせる
空間発生手段と、基端部が前記絶縁油循環通路に接続さ
れ、フィルタを設けた先端部が前記ガス抽出室内に臨ん
でいる油噴出配管と、前記ガス抽出室に連通され、絶縁
油中の溶解ガスの成分を測定するガス検知素子を有する
ガス検知室とを備えていることを特徴とする油中溶解ガ
ス監視装置。 （，２） 空間発生手段は、ガス抽出室に設けられてい
る往復動自在のベローズと、とのベロ・−ズに連結され
ており、ベローズな往復動させるベローズ駆動部とによ
り構成されている特許請求の範囲第１項記載の油中溶解
ガス監視装置。(1) An insulating oil circulation passage is provided outside the tank for oil-filled electrical equipment, and serves as a passage for the insulating oil in the tank for oil-filled electrical equipment to circulate; A gas extraction chamber in which oil accumulates, a space generating means provided in the gas extraction chamber to create a space inside the gas extraction chamber, and a base end connected to the insulating oil circulation passage and provided with a filter. and a gas detection chamber communicating with the gas extraction chamber and having a gas detection element for measuring dissolved gas components in the insulating oil. Dissolved gas monitoring equipment in oil. (, 2) The space generating means is composed of a reciprocating bellows provided in the gas extraction chamber and a bellows drive unit connected to the bellows and causing the bellows to reciprocate. An apparatus for monitoring dissolved gas in oil according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59108583A JPS60253842A (en) | 1984-05-30 | 1984-05-30 | Apparatus for monitoring dissolved gas in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59108583A JPS60253842A (en) | 1984-05-30 | 1984-05-30 | Apparatus for monitoring dissolved gas in oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60253842A true JPS60253842A (en) | 1985-12-14 |
Family
ID=14488485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59108583A Pending JPS60253842A (en) | 1984-05-30 | 1984-05-30 | Apparatus for monitoring dissolved gas in oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60253842A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3073261A1 (en) * | 2015-03-26 | 2016-09-28 | General Electric Company | Trace gas measurment apparauts for electrical equipment |
| EP3076172A1 (en) * | 2015-04-02 | 2016-10-05 | General Electric Company | Trace gas measurement apparaus for electrical equipment |
-
1984
- 1984-05-30 JP JP59108583A patent/JPS60253842A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3073261A1 (en) * | 2015-03-26 | 2016-09-28 | General Electric Company | Trace gas measurment apparauts for electrical equipment |
| US10024836B2 (en) | 2015-03-26 | 2018-07-17 | General Electric Company | Trace gas measurement apparatus for electrical equipment |
| EP3076172A1 (en) * | 2015-04-02 | 2016-10-05 | General Electric Company | Trace gas measurement apparaus for electrical equipment |
| CN106053719A (en) * | 2015-04-02 | 2016-10-26 | 通用电气公司 | Trace gas measurement apparatus for electrical equipment |
| US9874497B2 (en) | 2015-04-02 | 2018-01-23 | General Electric Company | Trace gas measurement apparatus for electrical equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4763514A (en) | Monitoring equipment for dissolved gas in insulating oil | |
| CN104833745B (en) | Method for injecting sample into analyzing branch of liquid-chromatography system | |
| KR101751626B1 (en) | Flow adjustment mechanism, diluted drug solution supply mechanism, liquid treatment device, and operation method thereof | |
| JP2009530197A (en) | Filling equipment with flow meter | |
| EP1954939B1 (en) | Method and device for determining hydraulic leakage rate in liquid-conveying sections, in particular, injection valves of internal combustion engines | |
| SE507956C2 (en) | Dilution and measuring device for particle counting | |
| JPS60253842A (en) | Apparatus for monitoring dissolved gas in oil | |
| US8302942B2 (en) | Microbubble water generator | |
| KR880005982A (en) | Mold Degassing Equipment | |
| US6382464B1 (en) | Cup type automatic vending machine | |
| US11596146B2 (en) | Speed controlled centrifugal pump embalming systems and method of using the same | |
| JPS60253840A (en) | Apparatus for monitoring dissolved gas in oil | |
| JPS60253841A (en) | Apparatus for monitoring dissolved gas in oil | |
| JPS61115891A (en) | Device for filling and supplying storage tank with liquid | |
| JPS60249033A (en) | Monitor device of dissolved gas in oil | |
| CN210863055U (en) | Special tool for detecting air tightness of cooler | |
| JP2006226947A (en) | Operation inspection system of excessive flow rate blocking valve and operation inspecting method, and draining device used for the same | |
| KR200420482Y1 (en) | carburetor tester | |
| JPH07156998A (en) | Filling nozzle | |
| KR100509446B1 (en) | A chemical solution supply apparatus in use the process of fabricating semiconductor device | |
| JPH11257527A (en) | Valve device | |
| CN220478858U (en) | Conical flask for gas purging titration analysis | |
| JP3102161U (en) | Sorting valve in sorting tank | |
| KR102565680B1 (en) | Sampling apparatus and sampling method | |
| CN115235855B (en) | Degassing device, degassing method and gas detection system in transformer oil |