JPH0721090Y2 - Sealing oil supply device for rotating electric machine - Google Patents
Sealing oil supply device for rotating electric machineInfo
- Publication number
- JPH0721090Y2 JPH0721090Y2 JP1988158895U JP15889588U JPH0721090Y2 JP H0721090 Y2 JPH0721090 Y2 JP H0721090Y2 JP 1988158895 U JP1988158895 U JP 1988158895U JP 15889588 U JP15889588 U JP 15889588U JP H0721090 Y2 JPH0721090 Y2 JP H0721090Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- machine
- sealing oil
- electric machine
- oil supply
- 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 - Lifetime
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は内部に例えば水素ガスが冷却気体として封入
された回転電機の軸封部に、機内側、機外側別個に密封
油を供給する複流式密封油供給装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a double-flow method in which sealing oil is separately supplied to the shaft seal portion of a rotating electric machine in which hydrogen gas is enclosed as a cooling gas, inside the machine and outside the machine, respectively. Type sealing oil supply device.
〔従来の技術〕 以下、従来の複流式密封油供給装置を第2図に示す系統
図に基ずいて説明する。図において、1は内部に水素ガ
スが密封されたタービン発電機のような回転電機、2は
この回転電機の回転軸、3は回転電機1の軸貫通部分に
設けられ回転電機1内の水素ガスが軸貫通部分から漏洩
するのを防止する密封器、4はこの密封器3の機内側に
密封油を供給する機内側密封油供給管、5は上記密封器
3の機外側に密封油を供給する機外側密封油供給管、6
は機内側密封油排油管、7は機外側密封油および軸受油
(図示は略す)が一体となり排出される軸受排油管、8
は上記回転電機1内の水素ガスと水素側密封油排油を遮
断する水素ガス遮断槽、9は軸受排油中に混入した水素
ガスおよび空気を排気するループシールタンク、10は機
内側密封油ポンプ、11は機外側密封油ポンプ、12は機外
側密封油圧を回転電機1内の水素ガス圧を常に一定値
(例えば0.85kg/cm2)だけ高くなるように調整するため
の差圧調整弁、13は機外側密封油圧と機内側密封油圧を
同圧に調整する均圧弁である。[Prior Art] Hereinafter, a conventional double-flow type sealing oil supply device will be described with reference to a system diagram shown in FIG. In the figure, 1 is a rotary electric machine such as a turbine generator in which hydrogen gas is sealed, 2 is a rotary shaft of the rotary electric machine, 3 is a hydrogen gas in the rotary electric machine 1, which is provided in a shaft penetrating portion of the rotary electric machine 1. To prevent the oil from leaking from the shaft penetrating portion. Reference numeral 4 denotes a seal oil supply pipe on the inside of the machine for supplying the seal oil to the inside of the sealer 3. Reference numeral 5 denotes the seal oil to the outside of the sealer 3. Outside machine oil seal pipe, 6
Is a seal oil drain pipe on the inside of the machine, 7 is a seal oil drain oil of the machine outside and bearing oil (not shown) is discharged as a unit, 8
Is a hydrogen gas shutoff tank for shutting off hydrogen gas in the rotating electric machine 1 and hydrogen-side sealing oil exhaust oil, 9 is a loop seal tank for exhausting hydrogen gas and air mixed in bearing exhaust oil, and 10 is a machine-side sealing oil A pump, 11 is an outside-sealing oil pump, and 12 is a differential pressure adjusting valve for adjusting the outside-sealing oil pressure so that the hydrogen gas pressure in the rotary electric machine 1 is always increased by a constant value (for example, 0.85 kg / cm 2 ). , 13 are equalizing valves for adjusting the outer side hydraulic pressure and the inner side hydraulic pressure to the same pressure.
このように構成された複流式密封油供給装置において、
均圧弁が機内側密封油圧と機外側密封油圧を完全に等し
く制御すれば機内側密封油と機外側密封油の混合が生じ
ることはないが、実際には均圧弁は使用されない場合も
あり、使用された場合でも均圧弁の多少の制御誤差のた
めに機内側密封油と機外側密封油の混合が生じる。機外
側密封油には空気が溶融しているため、機内側密封油に
混入すると溶融している空気が機内水素ガスに放出され
水素ガスの純度が低下するという問題があった。このよ
うな問題を解決する1つの方法は特開昭60-102838号公
報に示されている。即ち、同号第1図、第2図には真空
タンク17によって脱気した油が機内側に供給されるもの
が示されている。In the double-flow sealing oil supply device configured as described above,
If the equalizing valve controls the inner side sealing oil pressure and the outer side sealing oil pressure to be completely equal, mixing of the inner side sealing oil and the outer side sealing oil will not occur, but in reality the equalizing valve may not be used. Even if it is done, the sealing oil inside the machine and the sealing oil outside the machine are mixed due to some control error of the pressure equalizing valve. Since air is melted in the machine-side sealing oil, there is a problem that when mixed in the machine-side sealing oil, the melted air is released into the machine hydrogen gas and the purity of the hydrogen gas is lowered. One method for solving such a problem is disclosed in JP-A-60-102838. That is, FIGS. 1 and 2 of the same publication show that the oil degassed by the vacuum tank 17 is supplied to the inside of the machine.
しかしながら、同号に図示されている構成では、機内側
密封油に溶解した水素ガスが真空タンク17において除去
される結果、水素ガスの消耗が激しいという問題があっ
た。However, in the configuration shown in the same issue, as a result of the hydrogen gas dissolved in the machine interior sealing oil being removed in the vacuum tank 17, there has been a problem that the hydrogen gas is heavily consumed.
本考案は上記の問題を解決するためのものである。The present invention is to solve the above problems.
この考案に係る回転電機の密封油供給装置は、内部に冷
却気体が封入された回転電機の軸封のための密封器に、
機内側、機外側別個に密封油を供給する複流式密封油供
給装置において、機外側密封油回路のポンプ吸い込み口
の上流側に、上記ポンプに吸い込まれる油を真空脱気処
理する真空タンクを設けたものである。A sealing oil supply device for a rotary electric machine according to the present invention is a sealer for sealing a shaft of a rotary electric machine, in which a cooling gas is sealed,
In a double-flow type sealed oil supply device that supplies sealing oil separately inside and outside the machine, a vacuum tank for vacuum degassing the oil sucked into the pump is provided upstream of the pump suction port of the outside sealing oil circuit. It is a thing.
この考案における回転電機の密封油供給装置は、均圧弁
の多少の制御誤差があつて機外側密封油が機内側密封油
に混入しても、機外側密封油に溶融している空気が真空
タンクで真空脱気処理されているため、機内水素ガスの
純度が低下することはなく、機内側密封油を脱気する必
要もない。In the sealing oil supply device of the rotating electric machine according to the present invention, even if the sealing oil outside the machine is mixed into the sealing oil inside the machine due to some control error of the pressure equalizing valve, the air melted in the sealing oil outside the machine is a vacuum tank. Since the vacuum degassing process is performed in step 1, the purity of the hydrogen gas in the machine does not decrease, and it is not necessary to degas the inside sealing oil.
第1図に本考案の実施例を示す。第1図において、14は
真空タンク、15はフロート弁である。その他の構成は第
2図と同様である。FIG. 1 shows an embodiment of the present invention. In FIG. 1, 14 is a vacuum tank and 15 is a float valve. Other configurations are the same as in FIG.
真空タンク14は機外側密封油を真空脱気処理するための
ものである。本考案の系統では機外側密封油が真空タン
ク14において脱気されているため、機内側密封油に混入
しても機内水素ガスの純度が低下することはないので機
内側密封油を脱気する必要もない。図中、水素ガス遮断
槽8から真空タンク14へとつながる配管は、通常は油が
流れておらず水素ガス遮断槽8の油面が上昇した場合の
み流れる排油配管である。The vacuum tank 14 is used for vacuum deaeration of the outer sealing oil. In the system of the present invention, since the outer side sealing oil is degassed in the vacuum tank 14, even if mixed with the inner side sealing oil, the purity of the in-machine hydrogen gas does not decrease, so the inner side sealing oil is degassed. There is no need. In the figure, the pipe connecting the hydrogen gas cutoff tank 8 to the vacuum tank 14 is an oil drain pipe that normally flows only when oil does not flow and the oil level of the hydrogen gas cutoff tank 8 rises.
真空タンク14が空になると気外側密封油ポンプが焼き付
いたり機外側密封油の供給が不可能になるという問題が
生じるため、フロート弁15を配して真空タンク14の油面
を一定に制御している。即ち、真空タンク14の油面が下
がるとフロート弁15が開いて油を供給し、逆に油面が上
がるとフロート弁15が閉じて真空タンク14の油面を一定
に保持する。When the vacuum tank 14 becomes empty, there will be problems such as the outside air sealing oil pump burning out and the outside sealing oil supply becoming impossible.Therefore, the float valve 15 is arranged to control the oil level of the vacuum tank 14 at a constant level. ing. That is, when the oil level in the vacuum tank 14 drops, the float valve 15 opens to supply oil, and conversely when the oil level rises, the float valve 15 closes to keep the oil level in the vacuum tank 14 constant.
また、差圧調整弁12の戻り油を真空タンク14に返し、バ
イパス油を真空タンクに循環させることによつて真空脱
気処理の効果を高めている。Further, the return oil of the differential pressure regulating valve 12 is returned to the vacuum tank 14 and the bypass oil is circulated to the vacuum tank to enhance the effect of the vacuum deaeration process.
上記のように構成された本考案の密封油供給装置によれ
ば、均圧弁の誤差のために機内側密封油と機外側密封油
が混合しても、機内水素ガスの純度が低下することはな
い。また、機内側密封油を脱気する必要が無いので水素
ガスの消耗を減らすことができる。According to the sealing oil supply device of the present invention configured as described above, even if the sealing oil inside the machine and the sealing oil outside the machine are mixed due to the error of the pressure equalizing valve, the purity of the hydrogen gas inside the machine is not lowered. Absent. Further, since it is not necessary to deaerate the sealing oil inside the machine, consumption of hydrogen gas can be reduced.
第1図はこの考案の一実施例を示す系統図、第2図は従
来の複流式密封油供給装置を示す系統図である。 図中、1は回転電機、2は回転軸、3は密封器、4は機
内側密封油供給管、5は機外側密封油供給管、11は機外
側密封油ポンプ、12は差圧調整弁、13は均圧弁、14は真
空タンク、15はフロート弁である。 なお、図中同一符号は同一又は相当部分を示す。FIG. 1 is a system diagram showing an embodiment of the present invention, and FIG. 2 is a system diagram showing a conventional double-flow sealing oil supply device. In the figure, 1 is a rotary electric machine, 2 is a rotary shaft, 3 is a sealer, 4 is a machine-side sealed oil supply pipe, 5 is a machine-side sealed oil supply pipe, 11 is a machine-side sealed oil pump, and 12 is a differential pressure regulating valve. , 13 is a pressure equalizing valve, 14 is a vacuum tank, and 15 is a float valve. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
封のための密封器に、機内側、機外側それぞれに給油ポ
ンプを有する別個の油回路で密封油を供給する復流式密
封油供給装置において、前記機外側密封油回路のポンプ
吸い込み口の上流側に、上記ポンプに吸い込まれる油を
真空脱気処理する真空タンクを設けたことを特徴とする
回転電機の密封油供給装置。1. A recirculation type seal for supplying sealing oil to a sealer for sealing a shaft of a rotary electric machine, in which hydrogen gas is sealed, by means of separate oil circuits each having an oil supply pump inside and outside the machine. In the oil supply apparatus, a sealed oil supply apparatus for a rotary electric machine, characterized in that a vacuum tank for vacuum degassing the oil sucked by the pump is provided upstream of the pump suction port of the outer side sealed oil circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988158895U JPH0721090Y2 (en) | 1988-12-05 | 1988-12-05 | Sealing oil supply device for rotating electric machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988158895U JPH0721090Y2 (en) | 1988-12-05 | 1988-12-05 | Sealing oil supply device for rotating electric machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0279161U JPH0279161U (en) | 1990-06-18 |
JPH0721090Y2 true JPH0721090Y2 (en) | 1995-05-15 |
Family
ID=31439637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988158895U Expired - Lifetime JPH0721090Y2 (en) | 1988-12-05 | 1988-12-05 | Sealing oil supply device for rotating electric machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0721090Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60102838A (en) * | 1983-11-07 | 1985-06-07 | Mitsubishi Electric Corp | Sealing oil supply device of rotary electric machine |
-
1988
- 1988-12-05 JP JP1988158895U patent/JPH0721090Y2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60102838A (en) * | 1983-11-07 | 1985-06-07 | Mitsubishi Electric Corp | Sealing oil supply device of rotary electric machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0279161U (en) | 1990-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |