JPH0139917Y2 - - Google Patents

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Publication number
JPH0139917Y2
JPH0139917Y2 JP1983104702U JP10470283U JPH0139917Y2 JP H0139917 Y2 JPH0139917 Y2 JP H0139917Y2 JP 1983104702 U JP1983104702 U JP 1983104702U JP 10470283 U JP10470283 U JP 10470283U JP H0139917 Y2 JPH0139917 Y2 JP H0139917Y2
Authority
JP
Japan
Prior art keywords
oil
oil tank
tank
vacuum pump
pipe
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.)
Expired
Application number
JP1983104702U
Other languages
Japanese (ja)
Other versions
JPS6012691U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to JP10470283U priority Critical patent/JPS6012691U/en
Publication of JPS6012691U publication Critical patent/JPS6012691U/en
Application granted granted Critical
Publication of JPH0139917Y2 publication Critical patent/JPH0139917Y2/ja
Granted legal-status Critical Current

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  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Description

【考案の詳細な説明】 この考案は、ガス冷却回転電機の密封油処理装
置内の真空ポンプに付属する油分離器に関し、特
に、油分離器内の静電気によるガス爆発の防止に
係る。
[Detailed Description of the Invention] This invention relates to an oil separator attached to a vacuum pump in a sealed oil treatment device for a gas-cooled rotating electrical machine, and particularly relates to prevention of gas explosions due to static electricity within the oil separator.

ガス冷却回転電機、例えば水素冷却タービン発
電機では、機内の水素ガスを軸封するため圧力密
封油を供給するようにしている。この軸封部から
排出された密封油を密封油処理装置に入れ、真空
タンクにより真空脱気をし、密封油ポンプにより
圧力密封油として再び軸封部に供給し、この循環
を繰返している。
In a gas-cooled rotating electric machine, such as a hydrogen-cooled turbine generator, pressure sealing oil is supplied to seal the shaft of hydrogen gas inside the machine. The sealing oil discharged from the shaft sealing section is put into a sealing oil treatment device, vacuum degassed in a vacuum tank, and then supplied to the shaft sealing section again as pressure sealing oil by a sealing oil pump, and this cycle is repeated.

上記真空タンクにおける真空脱気のために、回
転形真空ポンプが用いられており、この真空ポン
プの付属装置として油分離器を設けてある。
A rotary vacuum pump is used for vacuum degassing in the vacuum tank, and an oil separator is provided as an accessory device to this vacuum pump.

この油分離器は、一定量の油を貯溜しており、
真空ポンプ本体の回転しゆう動部と固定部とのす
き間に入れ気密にし、しゆう動部を潤滑し、か
つ、真空ポンプ内の空間を埋めるのに必要な油を
確保し、真空ポンプとしての気体の圧縮と排出を
確実に行わせるため油を循環供給するようにして
おり、真空ポンプからの排気中の油分を分離回収
し、脱油した排気を放出するようにしている。
This oil separator stores a certain amount of oil.
By inserting the gap between the rotating moving part and the fixed part of the vacuum pump body to make it airtight, lubricating the moving part and securing the oil necessary to fill the space inside the vacuum pump, it is possible to use it as a vacuum pump. In order to ensure gas compression and discharge, oil is circulated and supplied, the oil in the exhaust from the vacuum pump is separated and recovered, and the oil-free exhaust is released.

従来のこの種の油分離器は、第1図に縦断面図
で、示すようになつていた。1は真空ポンプ(図
示は略す)に付属した油分離器の油タンクで、油
10を所定量に維持しており、内壁にはさび止め
塗装が施されている。2は油タンク1上に取付け
られ、内部点検のため取外し可能になつた上ふた
で、放出口3が設けられ屋外への放出配管4を接
続している。5は油タンク1内中央に立上る排気
管で、真空ポンプからの排気配管(図示は略す)
に外部で接続されてあり、真空ポンプからの圧縮
された気体と、真空ポンプ本体から循環し上記気
体に混入して戻る油分とを油タンク1内に排出す
る。6は上ふた2の下方に取付けられ排気管5の
上方に配置された傘形をなすバツフルプレート
で、排気管5からの油を含む排気を受け方向変換
させる。真空ポンプにより圧縮され油を含む排気
は、油タンク1内で膨張し油蒸気が発生するが、
バツフルプレート6に受けられ油気が凝縮し油滴
となり、油タンク1内へ滴下し回収され、貯油量
を維持するとともに、油蒸気が排気に混入したま
ま放出口3から放出されることのないようにして
いる。このバツフルプレート6を設けていない
と、排気から油分が回収されず、油タンク1内の
油量が次第に低下し、真空ポンプ本体の気密や潤
滑及び真空ポンプの作用効率を高める油の供給が
減少していくことになる。7は油タンク1の底部
に接続され真空ポンプ本体へ至る送油管で、脱気
された油を真空ポンプに供給し、気密維持や潤滑
作用をさせる。8は油タンク1の下部に接続され
いつたん立上つたあふれ管で、油タンク1内に所
定油量を確保し、これ以上の量になると排出す
る。油タンク1内の油量が所定以上になると、油
と気体の分離機能が発揮できなくなり、油を放出
口3から放出するようになつて、真空ポンプが過
負荷となるが、あふれ管8によりこれを防いでい
る。9は上ふた2に取付けられ、油タンク1内へ
油の補充や、内部の目視点検ができるようにした
栓である。
A conventional oil separator of this type was constructed as shown in FIG. 1, which is a vertical sectional view. Reference numeral 1 denotes an oil tank of an oil separator attached to a vacuum pump (not shown), which maintains a predetermined amount of oil 10, and whose inner wall is coated with anti-rust coating. Reference numeral 2 denotes an upper lid which is mounted on the oil tank 1 and is removable for internal inspection, and is provided with a discharge port 3 and connected to a discharge pipe 4 to the outside. 5 is an exhaust pipe that rises from the center of the oil tank 1, and is an exhaust pipe from the vacuum pump (not shown)
is externally connected to the vacuum pump, and discharges compressed gas from the vacuum pump and oil circulating from the vacuum pump body and mixed with the gas and returned into the oil tank 1. Reference numeral 6 denotes an umbrella-shaped baffle plate attached below the upper lid 2 and disposed above the exhaust pipe 5, which receives the oil-containing exhaust from the exhaust pipe 5 and changes its direction. The exhaust gas compressed by the vacuum pump and containing oil expands in the oil tank 1 and oil vapor is generated.
The oil received by the baffle plate 6 condenses into oil droplets, drops into the oil tank 1 and is collected, maintaining the amount of oil stored and preventing the oil vapor from being released from the outlet 3 while remaining mixed in the exhaust gas. I try not to. If this buttful plate 6 is not provided, oil will not be recovered from the exhaust gas, and the amount of oil in the oil tank 1 will gradually decrease, making it difficult to provide airtightness and lubrication of the vacuum pump body, as well as the supply of oil that improves the efficiency of the vacuum pump. It will continue to decrease. Reference numeral 7 denotes an oil feed pipe connected to the bottom of the oil tank 1 and leading to the vacuum pump body, which supplies deaerated oil to the vacuum pump to maintain airtightness and provide lubrication. Reference numeral 8 denotes an overflow pipe that is connected to the lower part of the oil tank 1 and immediately rises to ensure a predetermined amount of oil in the oil tank 1, and to discharge the oil when the amount exceeds this amount. When the amount of oil in the oil tank 1 exceeds a predetermined level, the oil and gas separation function cannot be achieved, and the oil is discharged from the discharge port 3, causing overload on the vacuum pump. This is prevented. Reference numeral 9 denotes a stopper that is attached to the upper lid 2 and allows replenishment of oil into the oil tank 1 and visual inspection of the interior.

上記従来の装置において、油タンク1内にため
られあふれ管8により所定量に維持された油10
は、送油管7から真空ポンプ本体に供給され、真
空ポンプ本体内で気密、潤滑及び空間を埋める作
用をする。これらの作用をした油は、真空ポンプ
内で圧縮された気体に混入し、排気配管から排気
管5により油タンク1内に戻る。この油タンク内
に排出された気体は気圧低下により膨張するが、
油蒸気や空気及び極く少量の爆発性の冷却ガス
(例えば水素ガス)からなつており、油蒸気はバ
ツフルプレート6により油滴にして回収し、脱油
された気体は放出口3から放出配管4により建屋
外の安全な所に導き放出するようにしている。水
素冷却タービン発電機では、軸封部に供給されて
排出された密封油中には漏れた水素が混入してい
るが、密封油処理装置の真空タンク内で、空気と
共に密封油中から真空ポンプの吸引により真空脱
気される。この真空ポンプに吸引された気体は混
入油と共に油分離器の油タンク1内へ排出され
る。 上記従来の油分離器は、油タンク1は内壁
が塗装されていて絶縁性をもつており、内部の帯
電した油10からの火花放電により爆発性ガス
(例えば水素)が引火爆発することがあり、時に
は大きな音を伴つていた。このため、真空ポンプ
の運転を一時停止し、油分離器を分解点検しなけ
ればならず、また、定期的に運転中における異常
の有無を監視する必要があつた。
In the conventional apparatus described above, oil 10 is stored in an oil tank 1 and maintained at a predetermined amount by an overflow pipe 8.
is supplied to the vacuum pump main body from the oil feed pipe 7, and functions to provide airtightness, lubrication, and fill space within the vacuum pump main body. The oil that has undergone these actions mixes with the gas compressed within the vacuum pump and returns to the oil tank 1 via the exhaust pipe 5 from the exhaust pipe. The gas discharged into the oil tank expands due to the drop in pressure, but
It consists of oil vapor, air, and a very small amount of explosive cooling gas (for example, hydrogen gas).The oil vapor is collected in the form of oil droplets by the buffer plate 6, and the deoiled gas is released from the outlet 3. The water is guided to a safe place outside the building and discharged through piping 4. In hydrogen-cooled turbine generators, leaked hydrogen is mixed in the seal oil supplied to the shaft seal and discharged, but in the vacuum tank of the seal oil treatment equipment, the leaked hydrogen is extracted from the seal oil together with air by the vacuum pump. Vacuum degassed by suction. The gas sucked into this vacuum pump is discharged together with mixed oil into the oil tank 1 of the oil separator. In the conventional oil separator described above, the oil tank 1 has an insulating inner wall that is painted, and explosive gas (for example, hydrogen) may ignite and explode due to spark discharge from the electrically charged oil 10 inside. , sometimes accompanied by loud noises. For this reason, the operation of the vacuum pump had to be temporarily stopped and the oil separator had to be disassembled and inspected, and it was also necessary to periodically monitor the presence or absence of abnormalities during operation.

この考案は、上記のような従来の問題点を解決
するためになされたもので、油タンク内の帯電し
た油の静電気を、接地してある油タンク側へ逃が
すようにし、油タンク内の爆発性ガスの引火爆発
をなくし、油タンク内に導入された排気が脱油さ
れて放出され、安全運転ができ、定期的な監視を
不要にし、油分の分離回収を向上した真空ポンプ
用油分離器を得ることを目的としている。
This idea was made to solve the conventional problems mentioned above, and it allows the static electricity from the charged oil in the oil tank to escape to the grounded oil tank side, preventing an explosion inside the oil tank. An oil separator for vacuum pumps that eliminates the ignition and explosion of toxic gases, deoils and releases the exhaust gas introduced into the oil tank, allows safe operation, eliminates the need for regular monitoring, and improves oil separation and recovery. The purpose is to obtain.

この考案にかかる真空ポンプ用油分離器は、油
タンク内の排気管の上端を上方から間隔をあけて
覆う、導電性の不銹性材からなるバツフルプレー
トを上ふた又は油タンクに取付け、このバツフル
プレートに導電性の不銹性材からなるスカートを
固着し、下端を油中に入れており、スカートの側
周には複数の導出穴を設けたものであり、スカー
トはバツフルプレートを介し、接地されてある油
タンク側に導通状態にしている。
The oil separator for a vacuum pump according to this invention includes a buttful plate made of a conductive non-rusting material that covers the upper end of the exhaust pipe in the oil tank at a distance from above, and is attached to the upper lid or the oil tank. A skirt made of conductive, non-rusting material is fixed to this buttful plate, and the lower end is immersed in oil.Multiple lead-out holes are provided around the side of the skirt, and the skirt is attached to the buttful plate. It is electrically connected to the grounded oil tank side through the .

この考案においては、真空ポンプから出され排
気管により導入された排気は、バツフルプレート
により方向変換されスカート内に入り、双方によ
り油分が油滴として分離回収され、脱油された排
気は導出穴を出て上昇し、上ふたから放出され
る。一方、油タンク内下方の油の帯電による静電
気は、スカートからバツフルプレートを経て油タ
ンク側へ逃がされ、油タンク内上部の爆発性ガス
の引火爆発が防止される。
In this device, the exhaust gas discharged from the vacuum pump and introduced through the exhaust pipe is directed into the skirt by the baffle plate, and oil is separated and recovered as oil droplets by both, and the deoiled exhaust gas is discharged through the outlet hole. exits, rises, and is released from the top lid. On the other hand, static electricity caused by the charging of oil in the lower part of the oil tank is released from the skirt to the oil tank side through the baffle plate, thereby preventing the explosive gas in the upper part of the oil tank from igniting and exploding.

第2図はこの考案の一実施例による油分離器の
縦断面図であり、1〜10は上記従来装置と同一
のものである。11は上ふた2に取付けられたバ
ツフルプレート6の外周縁部に固着されたスカー
トで、下端が延ばされ油10中に入つており、排
気の空気や爆発性ガスを逃がすための導出穴11
aを多数設けてある。このバツフルプレート6及
びスカート11は、さびなく導電性の材料、例え
ばステンレス材又は銅材あるいは黄銅材などを用
いており、塗装されていない。バツフルプレート
6は上ふた2に溶接又は金属ボルトにより固着さ
れ、導電性をもつている。したがつて、スカート
11はバツフルプレート6を介し油タンク1側に
電気接続されている。油タンク1又は上ふた2は
接地してある。
FIG. 2 is a longitudinal cross-sectional view of an oil separator according to an embodiment of this invention, in which numerals 1 to 10 are the same as the conventional apparatus described above. Reference numeral 11 denotes a skirt fixed to the outer peripheral edge of the buttful plate 6 attached to the upper lid 2, the lower end of which is extended and inserted into the oil 10, and has a lead-out hole for escaping exhaust air and explosive gas. 11
A large number of a are provided. The baffle plate 6 and the skirt 11 are made of rust-free and conductive material, such as stainless steel, copper, or brass, and are not painted. The baffle plate 6 is fixed to the upper lid 2 by welding or metal bolts, and has electrical conductivity. Therefore, the skirt 11 is electrically connected to the oil tank 1 side via the baffle plate 6. The oil tank 1 or the top lid 2 is grounded.

上記一実施例の油分離器において、真空ポンプ
の運転により、供給された油は、真空ポンプ本体
の回転部と静止部とのしゆう動摩擦によつて生ず
る静電気が異常に多い場合帯電され、この油は排
気管5から排出されて回収され、油タンク1中の
油面に集中して帯電する。油タンク1の内面はさ
び止め塗装してあり、従来は油10が帯電状態を
保つていたが、一実施例のものでは、スカート1
1が油10中に漬つており、バツフルプレート6
から上ふた2を通じて接地されているので、帯電
した油が絶えず油タンク1内へ排出されても、静
電気は接地側へ放電される。これにより、油タン
ク1内で水素など大気と混合すると爆発性を有す
るガスへ引火することがなくなる。
In the oil separator of the above embodiment, when the vacuum pump is operated, the supplied oil becomes electrically charged when there is an abnormally large amount of static electricity generated due to kinetic friction between the rotating part and the stationary part of the vacuum pump main body. The oil is discharged from the exhaust pipe 5 and collected, and the oil surface in the oil tank 1 is concentrated and charged. The inner surface of the oil tank 1 is coated with anti-rust coating, and conventionally the oil 10 maintains a charged state, but in one embodiment, the skirt 1
1 is soaked in oil 10, and a full plate 6
Since the tank is grounded through the top lid 2, even if charged oil is constantly discharged into the oil tank 1, static electricity is discharged to the ground side. This prevents explosive gas from igniting when mixed with the atmosphere, such as hydrogen, in the oil tank 1.

上記のように、排気管5から導入された排気
は、バツフルプレート6により方向変換しスカー
ト11内に入り、双方により油分は油滴となつて
効果的に分離回収され、脱油された気体は導出穴
11aを通り、油タンク1内上方から放出口3、
放出配管4を経て放出される。
As mentioned above, the exhaust gas introduced from the exhaust pipe 5 is diverted by the baffle plate 6 and enters the skirt 11, and the oil is effectively separated and recovered as oil droplets by both of them, and the deoiled gas is converted into oil droplets. passes through the outlet hole 11a and enters the discharge port 3 from above inside the oil tank 1.
It is discharged through the discharge pipe 4.

なお、上記実施例では、スカート11の導出穴
11aは円形にし一定間隔で配置したが、小判形
や半円形などにしてもよい。
In the above embodiment, the lead-out holes 11a of the skirt 11 are circular and arranged at regular intervals, but they may be oval or semicircular.

また、上記実施例では、バツフルプレート6は
上ふた2に取付けたが、油タンク1に取付けても
よい。
Further, in the above embodiment, the buff full plate 6 is attached to the upper lid 2, but it may be attached to the oil tank 1.

以上のように、この考案によれば、導電性の不
銹性材からなるバツフルプレートを油タンク内の
排気管の上方に配設し、上ふた又は油タンクに固
着し、導電性の不銹性材からなり側周に複数の導
出穴が設けられたスカートをバツフルプレートに
固着し、スカートをバツフルプレートを介し、接
地の油タンク側へ導通状態にし、スカートの下端
を油中に入れたので、油の帯電した静電気がスカ
ートからバツフルプレートを経て接地側へ逃がさ
れ、油タンク内の爆発性ガスへ引火することな
く、安全運転ができ、定期的な監視を要せず点検
の手間が省かれる効果がある。また、バツフルプ
レートに固着されたスカートにより、排気中の油
分の分離回収が向上する効果がある。
As described above, according to this invention, a buttful plate made of a conductive non-rusting material is disposed above the exhaust pipe in the oil tank, is fixed to the top lid or the oil tank, and is made of a conductive non-rust material. A skirt made of a rust-resistant material with multiple lead-out holes on the side circumference is fixed to the buttful plate, and the skirt is electrically connected to the grounded oil tank side through the buttful plate, and the lower end of the skirt is immersed in the oil. As a result, the static electricity charged in the oil escapes from the skirt to the ground side through the buttful plate, allowing safe operation without igniting the explosive gas in the oil tank, and eliminating the need for regular monitoring. This has the effect of saving time for inspection. Furthermore, the skirt fixed to the buff-full plate has the effect of improving the separation and recovery of oil in the exhaust gas.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の真空ポンプ用油分離器の縦断面
図、第2図はこの考案の一実施例による真空ポン
プ用油分離器の縦断面図である。。 1……油タンク、2……上ふた、3……放出
口、5……排気管、6……バツフルプレート、7
……送油管、8……あふれ管、10……油、11
……スカート、11a……導出穴。なお、図中同
一符号は同一又は相当部分を示す。
FIG. 1 is a longitudinal sectional view of a conventional oil separator for a vacuum pump, and FIG. 2 is a longitudinal sectional view of an oil separator for a vacuum pump according to an embodiment of this invention. . 1...Oil tank, 2...Top lid, 3...Discharge port, 5...Exhaust pipe, 6...Bullet plate, 7
... Oil pipe, 8 ... Overflow pipe, 10 ... Oil, 11
...Skirt, 11a... Lead-out hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 大気と混合すると爆発性を有する気体が混入さ
れている油を真空脱気する真空ポンプからの排気
が、底部から立上つた排気管により内部上方空所
部に導入され、排気中の混入油分が分離され下方
にためられ、内壁にさび止め塗装がされてある油
タンク、この油タンクの上部に取付けられ、油タ
ンク内空所部の除かれた排気を放出口から上方に
放出される上ふた、上記油タンクにためられてあ
る油を底部から上記真空ポンプの本体部に供給す
る送油管、上記油タンクの下部に接続され、貯油
の油面を所定高さに保たせるあふれ管、導電性の
不銹性材からなり傘形をなしており、上記油タン
ク内に上記排出管の上端を上方から間隔をあけて
覆つて配設され、接地されてある上記ふた又は油
タンクに固着されており、排気管から上昇する排
気を受けて方向変換させ、混入している油気を油
滴にして回収するためのバツフルプレート、及び
導電性の不銹性材からなりバツフルプレートの外
周縁部に固着され、下方に延びた下端部が油中に
あり、側周に配設された複数の導出穴により、油
分の除かれた排気を上記油タンク内上方に導くよ
うにし、かつ、帯電した油の静電気を上記油タン
ク側へ逃がすスカートを備えた真空ポンプ用油分
離器。
Exhaust air from a vacuum pump that vacuum deaerates oil that is contaminated with gas that is explosive when mixed with the atmosphere is introduced into the internal upper space through an exhaust pipe rising from the bottom, and the mixed oil in the exhaust air is removed. An oil tank that is separated and stored downwards and has an anti-rust coating on its inner wall, and an upper lid that is attached to the top of this oil tank and releases the exhaust air removed from the hollow space inside the oil tank upwards from the outlet. , an oil feed pipe that supplies the oil stored in the oil tank from the bottom to the main body of the vacuum pump; an overflow pipe that is connected to the bottom of the oil tank and maintains the oil level in the oil storage at a predetermined height; and an electrically conductive pipe. It is made of a non-rusting material and has an umbrella shape, and is arranged in the oil tank so as to cover the upper end of the discharge pipe from above at a distance, and is fixed to the grounded lid or the oil tank. a baffle plate that receives the exhaust gas rising from the exhaust pipe, changes its direction, and collects the mixed oil in the form of oil droplets; The lower end, which extends downward and is fixed to the oil tank, is submerged in the oil, and a plurality of outlet holes arranged around the side guide the exhaust gas from which oil is removed upward into the oil tank. An oil separator for vacuum pumps equipped with a skirt that releases static electricity from the oil to the oil tank.
JP10470283U 1983-07-04 1983-07-04 Oil separator for vacuum pump Granted JPS6012691U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10470283U JPS6012691U (en) 1983-07-04 1983-07-04 Oil separator for vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10470283U JPS6012691U (en) 1983-07-04 1983-07-04 Oil separator for vacuum pump

Publications (2)

Publication Number Publication Date
JPS6012691U JPS6012691U (en) 1985-01-28
JPH0139917Y2 true JPH0139917Y2 (en) 1989-11-30

Family

ID=30245734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10470283U Granted JPS6012691U (en) 1983-07-04 1983-07-04 Oil separator for vacuum pump

Country Status (1)

Country Link
JP (1) JPS6012691U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5544279A (en) * 1978-09-25 1980-03-28 Matsushita Graphic Commun Syst Inc Paper retainer in cylindrical scanning type facsimile unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5544279A (en) * 1978-09-25 1980-03-28 Matsushita Graphic Commun Syst Inc Paper retainer in cylindrical scanning type facsimile unit

Also Published As

Publication number Publication date
JPS6012691U (en) 1985-01-28

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