JPH0833280A - Sealed oil supply for electric rotating machine - Google Patents
Sealed oil supply for electric rotating machineInfo
- Publication number
- JPH0833280A JPH0833280A JP18549794A JP18549794A JPH0833280A JP H0833280 A JPH0833280 A JP H0833280A JP 18549794 A JP18549794 A JP 18549794A JP 18549794 A JP18549794 A JP 18549794A JP H0833280 A JPH0833280 A JP H0833280A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- air
- sealing
- circuit
- seal
- 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.)
- Granted
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、水素ガスを封入した
回転電機軸封部に密封油を供給する密封油供給装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing oil supply device for supplying sealing oil to a rotary electric machine shaft sealing portion containing hydrogen gas.
【0002】[0002]
【従来の技術】図6は例えば特開平4−344147号
に示された従来の回転電機の密封油供給装置を示す系統
図である。図において、1は水素ガスが封入された回転
電機、2はこの回転電機1の回転軸、3は密封器、4は
この密封器3の水素側(機内側)に密封油を供給する水
素側密封油供給管、5は密封器3の空気側(機外側)に
密封油を供給する空気側密封油供給管、6は密封器3か
ら水素側に排出される密封油を一時停滞させ、密封油内
の気泡を除去するために設置された泡取箱、7は水素側
密封油排油管、8は空気側及び軸受油(図示省略)が一
体となり排出される軸受油排油管、9は空気側密封油排
油及び軸受排油を一時停滞させ、水素ガス及び空気を排
気するためのループシールタンク、10はループシール
タンク9内で分離された水素ガス及び空気を安全な外
部、例えば屋外へ導く排出管、11はループシールタン
ク9内の上方空間部の圧力を軸受部の圧力より低くする
と共にループシールタンク9内の水素ガス及び空気を抽
出して屋外へ強制的に排出するよう設置されたベーパエ
クストラクタ、12は空気側密封油戻り管、13は回転
電機1内の水素ガスが外部に流出するのを遮断する水素
ガス遮断槽、14は水素ガス遮断槽13内の油面を一定
に維持するためのフロート弁、15は水素側密封油回路
の油量が不足したときに空気側密封油回路から補給する
ための密封油補給管、16は水素ガス遮断槽13内の密
封油を密封器3の水素側に供給し、密封器3からの水素
側密封油排油が水素ガス遮断槽13へ戻るよう構成した
水素側密封油回路中に設けた水素側密封油ポンプ、1
7,18はループシールタンク9内の密封油を密封器3
の空気側に供給し、密封器3からの空気側密封油排油を
軸受排油と共にループシールタンク9へ戻るように構成
した空気側密封油回路中に設けた常用空気側密封油ポン
プ(交流電源で駆動)及び非常用空気側密封油ポンプ
(直流電源で駆動)、19は逆止弁、20はポンプ入口
弁、21は安全弁、22は密封器3部分で機内水素ガス
圧より空気側密封油圧が一定値だけ高くなるように常用
空気側密封油ポンプ17、又は非常用空気側密封油ポン
プ18からの供給量を調整する目的でポンプの吐出側と
吸込側を結ぶバイパス回路上に設置した差圧調整弁、2
3は空気側密封油冷却器、24は空気側密封油フィル
タ、25は水素側密封油ポンプ16からの供給油量を水
素側密封油回路に必要な油量に設定するために水素側密
封油ポンプ吐出量の内密封器3へ供給される以外の流量
を水素側密封油ポンプ16の吸込側へ戻す目的で設置し
た手動バイパス弁、26は安全弁、27は水素側密封油
冷却器、28は水素側密封油フィルタ、29は密封器3
部分で空気側密封油圧と水素側密封油圧が等圧となるよ
うに水素側密封油圧を調整する目的で水素側密封油回路
上に設置した均圧弁、30は空気側密封油中から空気を
脱気する真空脱気槽、31は真空脱気槽30の油面を自
動的に一定に維持するために設けたフロート弁、32は
真空脱気槽30内の異常油面を検知する油面警報器、3
3は常用空気側密封油ポンプ17、又は非常用空気側密
封油ポンプ18の吐出量の内密封器3へ供給する以外の
空気側密封器を真空脱気槽内で噴霧して脱気を促進させ
るスプレイノズル管、34はスプレイノズル管33から
噴霧した密封油を徐々に脱気させる脱気皿、35はルー
プシールタンク9から戻ってきた空気側密封油を脱気皿
34に導き脱気効果を上げるための脱気皿導入管、36
は真空計、37は油面計、38は真空脱気槽入口弁、3
9は真空ポンプユニット、40は空気側密封油脱気装置
である。2. Description of the Related Art FIG. 6 is a system diagram showing a conventional sealing oil supply device for a rotary electric machine disclosed in, for example, Japanese Patent Laid-Open No. 4-344147. In the figure, 1 is a rotary electric machine filled with hydrogen gas, 2 is a rotary shaft of the rotary electric machine 1, 3 is a sealer, and 4 is a hydrogen side for supplying sealing oil to the hydrogen side (inside the machine) of the sealer 3. Sealing oil supply pipe, 5 is an air-side sealing oil supply pipe for supplying sealing oil to the air side (outside the machine) of the sealer 3, and 6 is a seal for temporarily sealing the sealing oil discharged from the sealer 3 to the hydrogen side, and sealing A defoaming box installed to remove air bubbles in oil, 7 is a hydrogen side sealed oil drain pipe, 8 is a bearing oil drain pipe in which air side and bearing oil (not shown) are integrally discharged, and 9 is air A loop seal tank 10 for temporarily stagnation of the side sealing oil drain oil and the bearing drain oil and exhausting hydrogen gas and air is provided for the hydrogen gas and air separated in the loop seal tank 9 to a safe outside, for example, outdoors. A discharge pipe 11 for guiding the pressure in the upper space in the loop seal tank 9 The vapor extractor is installed so as to have a pressure lower than that of the other part and to forcibly discharge the hydrogen gas and air in the loop seal tank 9 to the outside, 12 is an air side seal oil return pipe, and 13 is the rotating electric machine 1 A hydrogen gas shutoff tank for shutting out the hydrogen gas in the inside to the outside, 14 is a float valve for keeping the oil level in the hydrogen gas shutoff tank 13 constant, and 15 is the amount of oil in the hydrogen side sealed oil circuit A sealing oil supply pipe for supplying from the air side sealing oil circuit when it runs short, 16 supplies the sealing oil in the hydrogen gas cutoff tank 13 to the hydrogen side of the sealer 3, and the hydrogen side sealing oil from the sealer 3 A hydrogen-side sealing oil pump provided in a hydrogen-side sealing oil circuit configured to return exhaust oil to the hydrogen gas shutoff tank 13,
Reference numerals 7 and 18 denote the sealing oil in the loop seal tank 9 and the sealing device 3
The air side sealing oil drain from the sealer 3 is returned to the loop seal tank 9 together with the bearing drain oil. (Driven by power supply) and emergency air side sealed oil pump (driven by DC power supply), 19 is a check valve, 20 is a pump inlet valve, 21 is a safety valve, and 22 is a sealer 3 part, which is sealed on the air side from the hydrogen gas pressure inside the machine. It was installed on a bypass circuit connecting the discharge side and suction side of the pump for the purpose of adjusting the amount of supply from the regular air side sealing oil pump 17 or the emergency air side sealing oil pump 18 so that the hydraulic pressure becomes higher by a certain value. Differential pressure regulating valve, 2
3 is an air side seal oil cooler, 24 is an air side seal oil filter, and 25 is a hydrogen side seal oil for setting the amount of oil supplied from the hydrogen side seal oil pump 16 to the amount of oil required for the hydrogen side seal oil circuit. A manual bypass valve installed for the purpose of returning the flow rate of the pump discharge amount other than that supplied to the inner sealer 3 to the suction side of the hydrogen side seal oil pump 16, 26 is a safety valve, 27 is a hydrogen side seal oil cooler, and 28 is Hydrogen side seal oil filter, 29 is sealer 3
A pressure equalizing valve installed on the hydrogen-side sealing oil circuit for the purpose of adjusting the hydrogen-side sealing oil pressure so that the air-side sealing oil pressure and the hydrogen-side sealing oil pressure become equal at a part, 30 removes air from the air-side sealing oil. A vacuum deaeration tank to be aerated, 31 is a float valve provided to automatically keep the oil level of the vacuum deaeration tank 30 constant, and 32 is an oil level alarm for detecting an abnormal oil level in the vacuum deaeration tank 30. Bowl, 3
Numeral 3 promotes deaeration by spraying an air-side sealer other than the discharge amount of the regular air-side seal oil pump 17 or the emergency air-side seal oil pump 18 to the inner sealer 3 in the vacuum deaeration tank. A spray nozzle pipe for making 34, a deaeration tray for gradually deaerating the sealing oil sprayed from the spray nozzle pipe 33, a 35 for introducing the air side sealing oil returned from the loop seal tank 9 to the deaeration tray 34 and a deaerating effect. Degassing plate introduction tube for raising, 36
Is a vacuum gauge, 37 is an oil level gauge, 38 is a vacuum degassing tank inlet valve, 3
Reference numeral 9 is a vacuum pump unit, and 40 is an air side sealing oil deaeration device.
【0003】次に、上記従来装置の動作について説明す
る。回転電機1内の水素ガスは、水素側密封油回路及び
空気側密封油回路の両回路中を循環する密封油により密
封されている。空気側密封油回路においては、密封油は
正常運転時には常用空気側密封油ポンプ17により押し
出され、差圧調整弁22により機内水素ガス圧より一定
値だけ高い圧力に保たれ、密封器3へ供給される。そし
て、密封油は回転軸2に沿って空気側に押し出され、軸
受油(図示省略)と一緒になりループシールタンク9を
通り密封器3でのやりとりにより少なくなったり多くな
ったりした密封油の過不足を補い、真空脱気槽30に送
り込まれる。真空脱気槽30内に送り込まれた密封油は
脱気皿34で脱気され、真空脱気槽30内で上方の油溜
まりとなる。真空脱気槽30内では下方の油溜まりから
常用密封油ポンプ17へ脱気された密封油を送り出して
いる。交流電源停止などで常用空気側密封油ポンプ17
が停止した異常時には、直流電源駆動の非常用空気側密
封油ポンプ18が起動し、常用空気側密封油ポンプ17
と同じ機能を果たす。水素側密封油回路においては、密
封油は水素側密封油ポンプ16により押し出され、水素
側密封油回路の密封油の全量に過不足が生じないように
均圧弁29により水素側と空気側の密封油圧をできる限
り同圧にして密封器3に供給している。そして密封油は
回転軸2に沿って水素側に押し出され、泡取箱6に入っ
た後、あふれ出て水素ガス遮断槽13に入る。ここで密
封油中に泡となって含まれた水素ガスを抜き、水素ガス
遮断槽13の底より引き出された密封油は水素側密封油
ポンプ16に送り込まれる。このようにして空気側密封
油回路、水素側密封油回路とも完結され同じ循環を繰り
返す。Next, the operation of the above conventional device will be described. The hydrogen gas in the rotary electric machine 1 is sealed by the sealing oil that circulates in both the hydrogen side sealing oil circuit and the air side sealing oil circuit. In the air-side sealing oil circuit, the sealing oil is pushed out by the normal-use air-side sealing oil pump 17 during normal operation, kept at a pressure higher than the in-machine hydrogen gas pressure by the differential pressure adjusting valve 22, and supplied to the sealer 3. To be done. Then, the sealing oil is pushed out toward the air side along the rotary shaft 2, becomes together with the bearing oil (not shown), passes through the loop seal tank 9, and is reduced or increased due to the interaction with the sealer 3. It is sent to the vacuum degassing tank 30 with the excess and deficiency compensated. The sealing oil sent into the vacuum degassing tank 30 is degassed by the degassing tray 34 and becomes an upper oil sump in the vacuum degassing tank 30. In the vacuum degassing tank 30, the degassed sealing oil is sent from the lower oil reservoir to the regular sealing oil pump 17. Regular air side sealed oil pump 17 for AC power supply stop etc.
In the event of an abnormality that the power supply has stopped, the DC power source-driven emergency air-side sealing oil pump 18 is activated, and the normal-air-side sealing oil pump 17 is activated.
Performs the same function as. In the hydrogen side sealing oil circuit, the sealing oil is pushed out by the hydrogen side sealing oil pump 16, and the hydrogen side and the air side are sealed by the pressure equalizing valve 29 so that the total amount of the sealing oil in the hydrogen side sealing oil circuit does not become insufficient. The hydraulic pressure is supplied as much as possible to the sealing device 3. The sealing oil is pushed out toward the hydrogen side along the rotary shaft 2, enters the bubble take-up box 6, and then overflows into the hydrogen gas shutoff tank 13. Here, the hydrogen gas contained in the sealing oil as bubbles is removed, and the sealing oil drawn from the bottom of the hydrogen gas blocking tank 13 is fed to the hydrogen side sealing oil pump 16. In this way, the air side sealing oil circuit and the hydrogen side sealing oil circuit are completed and the same circulation is repeated.
【0004】従来の密封油供給装置は、以上のように空
気側の密封油と水素側の密封油を別々の回路に分け、両
者の圧力を等しくするように構成している。これにより
例えば密封器3で水素側の機内水素ガスを含んだ密封油
が空気側に流れ込み、真空脱気槽30内で脱気処理され
る事による機内水素ガスの消費を抑えることができる。
又、空気側密封油を脱気する空気側密封油脱気装置40
を設けることにより、均圧弁29で調整しきれない微少
な圧力差が生じ、密封器3における空気側と水素側との
間の密封油のやりとりによって、空気側密封油に含まれ
る空気が回転電機1内に侵入し回転電機1内の水素ガス
純度が低下することによって生じる回転電機1内の風損
が上昇することを防止することができる。この2つのシ
ステムにより水素消費量が少なく、水素ガス純度が低下
しない回転電機の密封油供給装置を構成することができ
る。As described above, the conventional seal oil supply device is constructed so that the air side seal oil and the hydrogen side seal oil are divided into different circuits to equalize the pressures of the two. Thereby, for example, the sealing oil containing the hydrogen gas in the on-machine hydrogen gas flows into the air side in the sealing device 3 and the consumption of the in-machine hydrogen gas due to the deaeration process in the vacuum deaeration tank 30 can be suppressed.
Further, the air-side sealing oil deaerator 40 for deaerating the air-side sealing oil
By providing the pressure equalizing valve 29, a minute pressure difference that cannot be adjusted by the pressure equalizing valve 29 is generated, and the air contained in the air side sealing oil is exchanged with the sealing oil between the air side and the hydrogen side in the sealing device 3. It is possible to prevent an increase in windage loss inside the rotary electric machine 1 caused by a decrease in the hydrogen gas purity inside the rotary electric machine 1 due to invasion into the inside of the rotary electric machine 1. With these two systems, it is possible to configure a sealing oil supply device for a rotary electric machine that consumes less hydrogen and does not reduce hydrogen gas purity.
【0005】[0005]
【発明が解決しようとする課題】従来の密封油供給装置
は以上のように構成されているので、空気側密封油脱気
装置40は密封器3の空気側に必要な密封油全量(10
0〜150リッター/分)を脱気処理する必要があるた
め、特に真空脱気槽30が大きなものとなり、空気側密
封油脱気装置40は大型で重いものとなっていた。この
ため据え付ける場所にも制限を受けるという欠点があ
り、これをいかに小型、軽量化するかが重要な問題とな
る。Since the conventional sealing oil supply device is constructed as described above, the air side sealing oil deaerating device 40 has the total amount of sealing oil (10) necessary for the air side of the sealer 3.
Since it is necessary to perform degassing (0 to 150 liters / minute), the vacuum degassing tank 30 is particularly large, and the air-side sealing oil degassing device 40 is large and heavy. For this reason, there is a drawback that the installation place is also limited, and how to reduce the size and weight is an important issue.
【0006】この発明は上記のような問題点を解消する
ためになされたもので、従来の大型で重たい空気側密封
油脱気装置を有した密封油供給装置を小型で軽量な密封
油脱気装置に置き換える事により、機能を従来通りに保
持した上で、据え付け場所などに支障がない密封油供給
装置を得る事を目的としている。The present invention has been made in order to solve the above problems, and a conventional small-sized sealing oil supply device having a large and heavy air-side sealing oil degassing device is used as a small and lightweight sealing oil degassing device. The purpose is to obtain a sealing oil supply device that retains its function as usual by replacing it with a device and does not hinder the installation location.
【0007】[0007]
【課題を解決するための手段】請求項1による回転電機
の密封油供給装置は、空気側密封油回路から水素側密封
油回路へ密封油を補給する密封油補給管の途中に空気側
密封油を真空脱気する密封油脱気装置を設置すると共
に、水素側密封油供給回路の密封油の圧力を空気側の密
封油より高くした。According to a first aspect of the present invention, there is provided a seal oil supply device for a rotary electric machine, wherein an air side seal oil is provided in the middle of a seal oil supply pipe for supplying seal oil from an air side seal oil circuit to a hydrogen side seal oil circuit. A sealing oil deaeration device for vacuum degassing was installed, and the pressure of the sealing oil in the hydrogen side sealing oil supply circuit was made higher than that of the air side sealing oil.
【0008】請求項2による回転電機の密封油供給装置
は、密封油脱気装置として、スプレイノズル管及び脱気
皿を内蔵し、空気側密封油から空気を脱気する真空脱気
槽と、上記真空脱気槽の油面を自動的に一定に維持する
ためのフロート弁と、上記真空脱気槽に配設された油面
警報器と、上記真空脱気槽内を一定高真空に保ち、空気
側密封油から脱気した空気を上記真空脱気槽外へ吸引す
るための真空ポンプユニットとにより構成されている真
空脱気装置を用いた。According to a second aspect of the present invention, there is provided a sealing oil supply device for a rotary electric machine, which includes a spray nozzle tube and a degassing plate as a sealing oil deaeration device, and a vacuum deaeration tank for deaerating air from the air side sealing oil. A float valve for automatically maintaining a constant oil level in the vacuum degassing tank, an oil level alarm device provided in the vacuum degassing tank, and a constant high vacuum in the vacuum degassing tank. A vacuum deaeration device constituted by a vacuum pump unit for sucking the air deaerated from the air side sealing oil to the outside of the vacuum deaeration tank was used.
【0009】請求項3による回転電機の密封油供給装置
は、真空脱気槽の油面を自動的に一定に維持するための
フロート弁を2個並列に設けると共に、それぞれのフロ
ート弁に脱気皿導入管を継いだものである。According to a third aspect of the present invention, in the sealed oil supply device for a rotary electric machine, two float valves for automatically maintaining a constant oil level in the vacuum degassing tank are provided in parallel, and each float valve is degassed. It is a successor to the dish introduction tube.
【0010】請求項4による回転電機の密封油供給装置
は、空気側密封油脱気装置と水素側密封油回路との間に
補給油ポンプを設けたものである。According to a fourth aspect of the present invention, there is provided a seal oil supply device for a rotary electric machine, wherein a makeup oil pump is provided between the air side seal oil deaeration device and the hydrogen side seal oil circuit.
【0011】請求項5による回転電機の密封油供給装置
においては、密封油補給管と並列にバイパス管を設ける
と共に、逆止弁を設けたものである。According to a fifth aspect of the present invention, there is provided a seal oil supply device for a rotary electric machine, wherein a bypass pipe is provided in parallel with the seal oil supply pipe and a check valve is provided.
【0012】請求項6による回転電機の密封油供給装置
においては、密封油補給管と並列にバイパス管を設ける
と共に、電磁弁を設けたものである。According to the sixth aspect of the present invention, there is provided a seal oil supply device for a rotary electric machine, wherein a bypass pipe is provided in parallel with the seal oil supply pipe and an electromagnetic valve is provided.
【0013】請求項7による回転電機の密封油供給装置
においては、空気側密封油脱気装置と水素側密封油回路
とを2本の並列に配置された密封油補給管で結び、一方
の密封油補給管には交流電源駆動の補給油ポンプを設
け、他方の密封油補給管には直流電源駆動の補給油ポン
プを設けたものである。According to a seventh aspect of the present invention, there is provided a seal oil supply device for a rotary electric machine, wherein the air side seal oil deaerator and the hydrogen side seal oil circuit are connected by two seal oil supply pipes arranged in parallel, and one seal is provided. The oil supply pipe is provided with a supply oil pump driven by an AC power supply, and the other sealed oil supply pipe is provided with a supply oil pump driven by a DC power supply.
【0014】[0014]
【作用】この発明の請求項1,2,4による回転電機の
密封油供給装置は、水素側密封油の圧力を空気側密封油
の圧力よりも少し高めにして、水素側密封油が空気側密
封油回路に流れ込むようにすると共に、空気側に流れ込
んだ密封油分だけ空気側密封油回路から水素側密封油回
路へ補給するようにし、当該補給密封油を真空脱気装置
により脱気する。即ち、水素側に補給する密封油分だけ
脱気すれば良く、このように補給される密封油量は従来
の空気側密封油量に比べて1/20〜1/30程度とご
く少なくて済むため、脱気処理する密封油が少なくてす
み、空気側密封油脱気装置を構成している真空脱気槽等
が小型、軽量になる。In the sealing oil supply device for a rotary electric machine according to claims 1, 2 and 4 of the present invention, the pressure of the hydrogen side sealing oil is made slightly higher than the pressure of the air side sealing oil so that the hydrogen side sealing oil is on the air side. The sealing oil circuit is made to flow, and at the same time, the sealing oil component flowing to the air side is replenished from the air side sealing oil circuit to the hydrogen side sealing oil circuit, and the supplementary sealing oil is deaerated by the vacuum deaerator. That is, it suffices to degas only the sealing oil to be supplied to the hydrogen side, and the amount of sealing oil to be supplied in this way is as small as 1/20 to 1/30 as compared with the conventional air-side sealing oil amount. The amount of sealing oil to be degassed is small, and the vacuum degassing tank or the like constituting the air-side sealing oil degassing device is small and lightweight.
【0015】この発明の請求項3による回転電機の密封
油供給装置においては、フロート弁を2個並列に設けた
ので、一方のフロート弁が故障しても機能が停止するこ
とがなく、空気側密封油脱気装置全体としての油の出入
りの信頼性を向上させることができる。According to the third aspect of the present invention, in the seal oil supply device for a rotary electric machine, since two float valves are provided in parallel, the function does not stop even if one of the float valves fails, and the air side It is possible to improve the reliability of oil inflow and outflow in the entire sealed oil degassing device.
【0016】この発明の請求項5による回転電機の密封
油供給装置においては、バイパス管及び逆止弁を設ける
ことにより、空気側回路から水素側回路への補給油の供
給信頼性を向上させたものである。In the seal oil supply apparatus for a rotary electric machine according to claim 5 of the present invention, the bypass pipe and the check valve are provided to improve the reliability of supply of makeup oil from the air side circuit to the hydrogen side circuit. It is a thing.
【0017】この発明の請求項6による回転電機の密封
油供給装置においては、逆止弁の代わりに電磁弁を設け
ることにより、空気側回路から水素側回路への補給油の
供給信頼性を向上させると共に、補給油ポンプ及び駆動
モータの小型化を図ることができる。In the seal oil supply apparatus for a rotating electric machine according to claim 6 of the present invention, an electromagnetic valve is provided in place of the check valve to improve the reliability of supply of makeup oil from the air side circuit to the hydrogen side circuit. At the same time, the replenishment oil pump and the drive motor can be downsized.
【0018】この発明の請求項7による回転電機の密封
油供給装置においては、補給油ポンプを2個並列に設け
ることにより、空気側回路から水素側回路への補給油の
供給信頼性を向上させると共に、回転電機内の水素ガス
純度を確実に高純度に維持させることができる。In the seal oil supply apparatus for a rotating electric machine according to claim 7 of the present invention, two supply oil pumps are provided in parallel to improve the reliability of supply of supply oil from the air side circuit to the hydrogen side circuit. At the same time, the purity of hydrogen gas in the rotating electric machine can be reliably maintained at a high level.
【0019】[0019]
実施例1.図1はこの発明の実施例1による回転電機の
密封油供給装置を示す系統図であり、図中、従来技術と
同一部分については同一符号で示すものとする。41は
真空脱気槽30から密封油を引き出し水素ガス遮断槽1
3及びスプレイノズル管33に送り出す補給油ポンプ、
42は補給油ポンプ入口弁、43は密封油補給管であ
る。Example 1. FIG. 1 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a first embodiment of the present invention. In the figure, the same parts as those in the prior art are designated by the same reference numerals. 41 is a hydrogen gas shutoff tank 1 that draws sealing oil from the vacuum degassing tank 30.
3 and a replenishment oil pump for sending to the spray nozzle pipe 33,
42 is a supply oil pump inlet valve, and 43 is a sealing oil supply pipe.
【0020】次に動作について説明する。均圧弁29に
よって密封器3部分での圧力を強制的に水素側が高くな
るようにすると、水素側の密封油が空気側に少量流れ込
む事になる。その結果、水素ガス遮断槽13内の油面が
低下するためフロート弁14が開になり、真空脱気槽3
0内で脱気された空気側密封油が給油ポンプ41により
押し出され、水素ガス遮断槽13内に入り、油面を一定
値に保つ。又、水素ガス遮断槽13に密封油が補給され
ると真空脱気槽30の油面が低下するため、フロート弁
31が開となり、空気側密封油回路から密封油を脱気皿
34に補給し、真空脱気槽30内の油面を一定値に保つ
と同時に空気側密封油から空気を脱気する。尚、真空脱
気槽30から補給油ポンプ41で少量を水素側回路に補
給し、残りの大部分はスプレイノズル34を通じて真空
脱気槽30内に戻されるので、脱気効果が高められる。Next, the operation will be described. When the pressure in the sealer 3 portion is forced to increase on the hydrogen side by the pressure equalizing valve 29, a small amount of hydrogen-side sealing oil flows into the air side. As a result, the oil level in the hydrogen gas cutoff tank 13 is lowered, so that the float valve 14 is opened, and the vacuum degassing tank 3 is opened.
The air-side sealing oil deaerated in 0 is pushed out by the oil supply pump 41, enters the hydrogen gas cutoff tank 13, and keeps the oil level at a constant value. When the hydrogen gas shutoff tank 13 is replenished with sealing oil, the oil level in the vacuum degassing tank 30 lowers, so the float valve 31 opens and the sealing oil is supplied from the air side sealing oil circuit to the degassing tray 34. Then, the oil level in the vacuum degassing tank 30 is maintained at a constant value, and at the same time, air is degassed from the air-side sealing oil. Since a small amount is replenished to the hydrogen side circuit from the vacuum degassing tank 30 by the replenishment oil pump 41, and most of the remaining part is returned to the vacuum degassing tank 30 through the spray nozzle 34, the degassing effect is enhanced.
【0021】以上のようにこの実施例によれば、補給油
ポンプ41を設けた空気側密封油脱気装置40を水素ガ
ス遮断槽13への密封油補給管43の途中に設けた事に
より、水素側の密封油の圧力を空気側の密封油の圧力よ
りも常に高くすることができ、密封器3において空気側
の密封油が水素側の密封油に流入することがなくなる。
そして空気側密封油から水素側密封油に補給される分だ
け脱気すればよいので、回転電機内に侵入する空気の量
を減少させるために必要な密封油の脱気処理量を大幅に
低減でき、空気側密封油脱気装置40の小型化、軽量化
を図ることができると共に装置を安価に製作できる。As described above, according to this embodiment, the air-side sealing oil deaerator 40 provided with the replenishing oil pump 41 is provided in the middle of the sealing oil replenishing pipe 43 to the hydrogen gas shutoff tank 13. The pressure of the sealing oil on the hydrogen side can be constantly made higher than the pressure of the sealing oil on the air side, so that the sealing oil on the air side does not flow into the sealing oil on the hydrogen side in the sealing device 3.
Since the air side sealing oil needs to be degassed as much as the hydrogen side sealing oil is replenished, the amount of degassing treatment of the sealing oil required to reduce the amount of air entering the rotating electrical machine is greatly reduced. Therefore, the air-side sealing oil deaeration device 40 can be made smaller and lighter, and the device can be manufactured at low cost.
【0022】実施例2.次に、図2によりこの発明の実
施例2について説明する。上記実施例1では真空脱気槽
30から補給油ポンプ41を運転して空気側回路の密封
油を水素側回路に供給していたが、万一補給油ポンプ4
1が停止した場合この密封油供給が停止してしまう。そ
こで図2に示すようにバイパス管44と逆止弁45,4
6を設けている。そして、通常運転時は補給油ポンプ4
1の出口圧力を高くして真空脱気槽バイパス逆止弁46
が閉止状態になるようにし、補給油ポンプ41が停止し
た時にはポンプ出口圧力が低下するため逆に補給油ポン
プ出口逆止弁45が閉止状態となり、真空脱気槽バイパ
ス逆止弁46が開いて自動補給する。以上の回路を設け
る事で空気側回路から水素側回路への補給油の供給信頼
性を向上させることができる。Example 2. Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the replenishment oil pump 41 was operated from the vacuum degassing tank 30 to supply the sealing oil of the air side circuit to the hydrogen side circuit.
When 1 is stopped, this sealing oil supply is stopped. Therefore, as shown in FIG. 2, the bypass pipe 44 and the check valves 45, 4
6 is provided. And, during normal operation, the replenishment oil pump 4
1. Increase the outlet pressure of 1 to make the vacuum degassing tank bypass check valve 46
When the replenishment oil pump 41 is stopped, the pump outlet pressure decreases, so that the replenishment oil pump outlet check valve 45 is closed and the vacuum degassing tank bypass check valve 46 opens. Automatically replenish. By providing the above circuit, it is possible to improve the supply reliability of the supplementary oil from the air side circuit to the hydrogen side circuit.
【0023】実施例3.次に、図3によりこの発明の実
施例3について説明する。上記実施例2では万一補給油
ポンプ41が停止した場合のことを考慮してバイパス管
44と逆止弁45,46を設けた例を示したが、図3に
示すように逆止弁46の代わりに電磁弁47を使用し、
補給油ポンプが停止し、或いは真空脱気槽30の油面が
低下した時に電磁弁47を開とする事で自動補給するこ
とができる。以上の回路を設ける事で空気側回路から水
素側回路への補給油の供給信頼性を向上させると共に、
実施例2の場合では逆止弁46を設けていたため補給油
ポンプ41の吐出圧力は必ず空気側密封油回路から供給
される密封油圧力よりも高くする必要があり、補給油ポ
ンプ41及び駆動モータを大きくする必要があったが、
電磁弁47を使用すれば圧力バランスでは開閉しないた
め、補給油ポンプ41の吐出圧力は空気側密封回路から
供給される密封油圧力には依存されず、実施例2よりも
補給油ポンプ41及び駆動モータの小型化が可能にな
る。Example 3. Next, a third embodiment of the present invention will be described with reference to FIG. In the second embodiment, an example in which the bypass pipe 44 and the check valves 45 and 46 are provided in consideration of the case where the replenishment oil pump 41 is stopped is shown, but as shown in FIG. Use solenoid valve 47 instead of
When the replenishment oil pump is stopped or the oil level in the vacuum degassing tank 30 is lowered, the solenoid valve 47 is opened to automatically replenish the oil. By providing the above circuit, while improving the supply reliability of the supplementary oil from the air side circuit to the hydrogen side circuit,
In the case of the second embodiment, since the check valve 46 is provided, the discharge pressure of the makeup oil pump 41 must be higher than the sealing oil pressure supplied from the air side sealing oil circuit, and the makeup oil pump 41 and the drive motor. Needed to be increased,
If the solenoid valve 47 is used, it does not open and close in a pressure balance, so the discharge pressure of the replenishment oil pump 41 does not depend on the sealing oil pressure supplied from the air side sealing circuit, and the replenishment oil pump 41 and the driving force are higher than those in the second embodiment. The motor can be miniaturized.
【0024】実施例4.次に、図4によりこの発明の実
施例4について説明する。上記実施例3では、万一補給
油ポンプ41が停止した場合のことを考慮して電磁弁4
7を設け、補給油ポンプ停止、或いは真空脱気槽30の
油面が低下した時に電磁弁47を開とすることで自動補
給するようにして空気側回路から水素側回路への補給油
の供給信頼性を向上させているが、このままでは脱気さ
れていない密封油を水素側に補給することとなり、水素
側の密封油に空気が混入する事態が発生する。そこで図
4に示すように交流電源駆動の補給油ポンプ41と並列
に直流電源駆動の補給油ポンプ48及びポンプ入口弁4
9を設け、脱気された補給油を常に供給出来るようにし
ている。これによって、空気側回路から水素側回路への
補給油の供給信頼性を向上させると共に、回転電機1内
の水素ガス純度を確実に高純度に維持させる事が出来
る。Example 4. Next, a fourth embodiment of the present invention will be described with reference to FIG. In the third embodiment, in consideration of the case where the replenishment oil pump 41 is stopped, the solenoid valve 4 is considered.
7, the supply oil pump is stopped, or when the oil level in the vacuum degassing tank 30 is lowered, the solenoid valve 47 is opened to automatically supply the supply oil from the air side circuit to the hydrogen side circuit. Although the reliability is improved, if it is left as it is, the sealing oil that has not been degassed will be replenished to the hydrogen side, and air will be mixed into the sealing oil on the hydrogen side. Therefore, as shown in FIG. 4, a replenishment oil pump 48 driven by a DC power supply and a pump inlet valve 4 are provided in parallel with the replenishment oil pump 41 driven by an AC power supply.
9 is provided so that the degassed replenishing oil can always be supplied. As a result, it is possible to improve the reliability of supply of makeup oil from the air side circuit to the hydrogen side circuit, and to reliably maintain the purity of hydrogen gas in the rotary electric machine 1 at a high level.
【0025】実施例5.次に、図5によりこの発明の実
施例5について説明する。上記実施例1〜4において
は、真空脱気槽30への密封油供給はフロート弁31か
らのみであり、このままではフロート弁31が故障した
ときに機能が停止してしまうことになる。そこで実施例
5においては、この部分の供給信頼性を向上させるため
にフロート弁31に並行に非常用フロート弁50、脱気
皿導入管51を設け、空気側密封油脱気装置全体として
の油の出入りの信頼性を向上させている。 尚、図5に
おいては実施例4の構造においてフロート弁を並列に設
けた場合を示したが、実施例1〜3の構造においても同
様に適用できる。Embodiment 5 FIG. Next, a fifth embodiment of the present invention will be described with reference to FIG. In the first to fourth embodiments, the sealing oil is supplied to the vacuum degassing tank 30 only from the float valve 31, and if it is left as it is, the function will stop when the float valve 31 fails. Therefore, in the fifth embodiment, in order to improve the supply reliability of this portion, an emergency float valve 50 and a degassing tray introducing pipe 51 are provided in parallel with the float valve 31, and the oil of the entire air-side sealed oil deaerator is provided. Improves the reliability of coming and going. In addition, in FIG. 5, the case where the float valves are provided in parallel in the structure of the fourth embodiment is shown, but the same can be applied to the structures of the first to third embodiments.
【0026】[0026]
【発明の効果】請求項1,2,4の発明においては、空
気側密封油回路から水素側密封油回路に密封油を供給す
る密封油補給管の途中に空気側密封油脱気装置を設けた
ので、回転電機内に侵入する空気の量を減少させるため
に必要な密封油の脱気処理量を大幅に低減でき、空気側
密封油脱気装置の小型化、軽量化を図ることができると
共に装置を安価に製作できる。According to the present invention, the air side sealing oil deaerator is provided in the middle of the sealing oil supply pipe for supplying the sealing oil from the air side sealing oil circuit to the hydrogen side sealing oil circuit. Therefore, the amount of deaerating treatment of the sealing oil required to reduce the amount of air entering the rotary electric machine can be significantly reduced, and the air-side sealing oil deaerator can be made smaller and lighter. At the same time, the device can be manufactured inexpensively.
【0027】請求項3においては、真空脱気装置のフロ
ート弁を2個並列に設けたので、一方のフロート弁が故
障しても機能が停止することがなく、空気側密封油脱気
装置全体としての油の出入りの信頼性を向上させること
ができる。In the third aspect, since two float valves of the vacuum deaerator are provided in parallel, the function does not stop even if one float valve fails, and the entire air-side sealed oil deaerator is provided. As a result, the reliability of the oil coming in and out can be improved.
【0028】請求項5の発明においては、バイパス管及
び逆止弁を設けることにより、空気側回路から水素側回
路への補給油の供給信頼性を向上させることができる。According to the fifth aspect of the present invention, by providing the bypass pipe and the check valve, it is possible to improve the reliability of supply of makeup oil from the air side circuit to the hydrogen side circuit.
【0029】請求項6の発明においては、逆止弁の代わ
りに電磁弁を設けることにより、空気側回路から水素側
回路への補給油の供給信頼性を向上させると共に、補給
油ポンプ及び駆動モータの小型化を図ることができる。According to the invention of claim 6, by providing an electromagnetic valve instead of the check valve, the reliability of supply of the supplementary oil from the air side circuit to the hydrogen side circuit is improved, and the supplementary oil pump and the drive motor are provided. Can be miniaturized.
【0030】請求項7の発明においては、補給油ポンプ
を2個並列に設けることにより、空気側回路から水素側
回路への補給油の供給信頼性を向上させると共に、回転
電機内の水素ガス純度を確実に高純度に維持させる事が
できる。According to the invention of claim 7, by providing two replenishment oil pumps in parallel, the supply reliability of the replenishment oil from the air side circuit to the hydrogen side circuit is improved and the purity of hydrogen gas in the rotating electric machine is improved. Can be reliably maintained in high purity.
【図1】 この発明の実施例1の回転電機の密封油供給
装置を示す系統図である。FIG. 1 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a first embodiment of the present invention.
【図2】 この発明の実施例2の回転電機の密封油供給
装置を示す系統図である。FIG. 2 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a second embodiment of the present invention.
【図3】 この発明の実施例3の回転電機の密封油供給
装置を示す系統図である。FIG. 3 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a third embodiment of the present invention.
【図4】 この発明の実施例4の回転電機の密封油供給
装置を示す系統図である。FIG. 4 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a fourth embodiment of the present invention.
【図5】 この発明の実施例5の回転電機の密封油供給
装置を示す系統図である。FIG. 5 is a system diagram showing a sealing oil supply device for a rotary electric machine according to a fifth embodiment of the present invention.
【図6】 従来の回転電機の密封油供給装置を示す系統
図である。FIG. 6 is a system diagram showing a conventional sealing oil supply device for a rotary electric machine.
1 回転電機、2 回転軸、3 密封器、4 水素側密
封油供給管、5 空気側密封油供給管、6 泡取箱、7
水素側密封油排油管、8 軸受油排油管、9ループシ
ールタンク、10 排出管、11 ベーパエクストラク
タ、12 空気側密封油戻り管、13 水素ガス遮断
槽、14 フロート弁、15 密封油補給管、16 水
素側密封油ポンプ、17 常用空気側密封油ポンプ、1
8 非常用空気側密封油ポンプ、19 逆止弁、20
ポンプ入口弁、21 安全弁、22 差圧調整弁、23
空気側密封油冷却器、24 空気側密封油フィルタ、
25 手動バイパス弁、26 安全弁、27 水素側密
封油冷却器、28 水素側密封油フィルタ、29 均圧
弁、30 真空脱気槽、31 フロート弁、32油面警
報器、33 スプレイノズル管、34 脱気皿、35
脱気皿導入管、36 真空計、37 油面計、38 真
空脱気槽入口弁、39 真空ポンプユニット、40 空
気側密封油脱気装置、41 補給油ポンプ(ACP)、
42 補給油ポンプ入口弁、43 補給油ポンプ出口逆
止弁、44 真空脱気槽バイパス逆止弁、45 真空脱
気槽バイパス電磁弁、46 補給油ポンプ(DCP)、
47補給油ポンプ入口弁、48 非常用フロート弁。DESCRIPTION OF SYMBOLS 1 rotary electric machine, 2 rotary shafts, 3 sealing devices, 4 hydrogen side sealing oil supply pipes, 5 air side sealing oil supply pipes, 6 bubble removal boxes, 7
Hydrogen side seal oil drain pipe, 8 bearing oil drain pipe, 9 loop seal tank, 10 drain pipe, 11 vapor extractor, 12 air side seal oil return pipe, 13 hydrogen gas cutoff tank, 14 float valve, 15 seal oil supply pipe , 16 Hydrogen side sealed oil pump, 17 Regular air side sealed oil pump, 1
8 Emergency air side sealing oil pump, 19 Check valve, 20
Pump inlet valve, 21 Safety valve, 22 Differential pressure adjusting valve, 23
Air side sealing oil cooler, 24 Air side sealing oil filter,
25 Manual bypass valve, 26 Safety valve, 27 Hydrogen side sealing oil cooler, 28 Hydrogen side sealing oil filter, 29 Pressure equalizing valve, 30 Vacuum deaeration tank, 31 Float valve, 32 Oil level alarm device, 33 Spray nozzle pipe, 34 Desorption Air plate, 35
Degassing tray introduction pipe, 36 vacuum gauge, 37 oil level gauge, 38 vacuum degassing tank inlet valve, 39 vacuum pump unit, 40 air side sealed oil degassing device, 41 supplementary oil pump (ACP),
42 supply oil pump inlet valve, 43 supply oil pump outlet check valve, 44 vacuum degassing tank bypass check valve, 45 vacuum degassing tank bypass solenoid valve, 46 supply oil pump (DCP),
47 Supply oil pump inlet valve, 48 Emergency float valve.
Claims (7)
密封器の水素側及び空気側にそれぞれ別個に密封油を供
給する水素側密封油供給回路及び空気側密封油供給回路
を備えた回転電機の密封油供給装置において、上記空気
側密封油回路から上記水素側密封油回路へ密封油を補給
する密封油補給管の途中に空気側密封油を真空脱気する
密封油脱気装置を設置すると共に、水素側密封油供給回
路の密封油の圧力を空気側の密封油より高くすることを
特徴とする回転電機の密封油供給装置。1. A hydrogen side sealing oil supply circuit and an air side sealing oil supply circuit for separately supplying sealing oil to a hydrogen side and an air side of a sealer of a shaft sealing portion of a rotary electric machine that seals hydrogen gas. In a seal oil supply device for a rotating electric machine, a seal oil deaerator for vacuum degassing the air side seal oil is provided in the middle of a seal oil supply pipe for supplying seal oil from the air side seal oil circuit to the hydrogen side seal oil circuit. A seal oil supply device for a rotary electric machine, characterized in that the seal oil pressure of the hydrogen side seal oil supply circuit is set higher than that of the air side seal oil when installed.
及び脱気皿を内蔵し、空気側密封油から空気を脱気する
真空脱気槽と、上記真空脱気槽の油面を自動的に一定に
維持するためのフロート弁と、上記真空脱気槽に配設さ
れた油面警報器と、上記真空脱気槽内を一定高真空に保
ち、空気側密封油から脱気した空気を上記真空脱気槽外
へ吸引するための真空ポンプユニットとにより構成され
ていることを特徴とする請求項1記載の回転電機の密封
油供給装置。2. A vacuum degassing tank for degassing air from air-side sealing oil, wherein the sealing oil degassing device has a spray nozzle tube and a degassing tray built-in, and an oil level of the vacuum degassing tank is automatically adjusted. A float valve for maintaining a constant level, an oil level alarm installed in the vacuum degassing tank, and air degassed from the air-side sealing oil by maintaining a constant high vacuum in the vacuum degassing tank. 2. A seal oil supply device for a rotary electric machine according to claim 1, wherein the seal oil supply device is configured by a vacuum pump unit for sucking the air out of the vacuum deaeration tank.
維持するためのフロート弁を2個並列に設けると共に、
それぞれのフロート弁に脱気皿導入管をつないだことを
特徴とする請求項2記載の回転電機の密封油供給装置。3. A float valve for automatically maintaining a constant oil level in the vacuum degassing tank is provided in parallel with two float valves.
The sealing oil supply device for a rotating electric machine according to claim 2, wherein a degassing tray introducing pipe is connected to each float valve.
との間に補給油ポンプを設けたことを特徴とする請求項
1から請求項3のいずれか1項に記載の回転電機の密封
油供給装置。4. The rotating electric machine according to claim 1, further comprising a replenishing oil pump provided between the sealing oil deaerator and the hydrogen side sealing oil circuit. Sealing oil supply device.
けたバイパス管を設置し、上記密封油補給管からの補給
が停止した場合に上記バイパス管を通して空気側密封油
回路から水素側密封油回路へ密封油を補給することを特
徴とする請求項1から請求項4のいずれか1項に記載の
回転電機の密封油供給装置。5. A bypass pipe provided with a check valve is installed in parallel with the sealing oil supply pipe, and when the supply from the sealing oil supply pipe is stopped, hydrogen is supplied from the air side sealing oil circuit through the bypass pipe. The seal oil supply device for a rotary electric machine according to any one of claims 1 to 4, wherein seal oil is supplied to the side seal oil circuit.
けたバイパス管を設置し、上記密封油補給管からの補給
が停止した場合に上記バイパス管を通して空気側密封油
回路から水素側密封油回路へ密封油を補給することを特
徴とする請求項1から請求項4のいずれか1項に記載の
回転電機の密封油供給装置。6. A bypass pipe provided with an electromagnetic valve is installed in parallel with the sealing oil supply pipe, and when the supply from the sealing oil supply pipe is stopped, the bypass pipe passes through the bypass pipe to the hydrogen side from the air side sealing oil circuit. The seal oil supply device for a rotary electric machine according to any one of claims 1 to 4, wherein seal oil is supplied to the seal oil circuit.
とを2本の並列に配置された密封油補給管で結び、上記
一方の密封油補給管には交流電源駆動の補給油ポンプを
設け、上記他方の密封油補給管には直流電源駆動の補給
油ポンプを設けたことを特徴とする請求項1から請求項
3のいずれか1項に記載の回転電機の密封油供給装置。7. A replenishment oil pump driven by an AC power source is connected to the replenishment system for deaerating the seal oil and the hydrogen side seal oil circuit by two seal oil supply pipes arranged in parallel. The seal oil supply device for a rotary electric machine according to any one of claims 1 to 3, wherein a supply oil pump driven by a DC power source is provided on the other seal oil supply pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18549794A JP2757936B2 (en) | 1994-07-13 | 1994-07-13 | Sealing oil supply device for rotating electric machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18549794A JP2757936B2 (en) | 1994-07-13 | 1994-07-13 | Sealing oil supply device for rotating electric machines |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0833280A true JPH0833280A (en) | 1996-02-02 |
JP2757936B2 JP2757936B2 (en) | 1998-05-25 |
Family
ID=16171807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18549794A Expired - Fee Related JP2757936B2 (en) | 1994-07-13 | 1994-07-13 | Sealing oil supply device for rotating electric machines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2757936B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8643230B2 (en) | 2009-05-14 | 2014-02-04 | Sinfonia Technology Co., Ltd. | Linear actuator and method of manufacturing linear actuator including a deaerating step |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102226416B (en) * | 2011-06-14 | 2014-02-12 | 山东电力研究院 | Dual-flow loop sealing oil improvement system of steam turbine generator set |
-
1994
- 1994-07-13 JP JP18549794A patent/JP2757936B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8643230B2 (en) | 2009-05-14 | 2014-02-04 | Sinfonia Technology Co., Ltd. | Linear actuator and method of manufacturing linear actuator including a deaerating step |
Also Published As
Publication number | Publication date |
---|---|
JP2757936B2 (en) | 1998-05-25 |
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