JPH07332016A - Automatic bypass oil feeding line for bearing protection - Google Patents
Automatic bypass oil feeding line for bearing protectionInfo
- Publication number
- JPH07332016A JPH07332016A JP12343394A JP12343394A JPH07332016A JP H07332016 A JPH07332016 A JP H07332016A JP 12343394 A JP12343394 A JP 12343394A JP 12343394 A JP12343394 A JP 12343394A JP H07332016 A JPH07332016 A JP H07332016A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pressure
- line
- bearing
- strainer
- 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.)
- Withdrawn
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は軸受に給油を必要とする
給油ラインに関し、タービン、減速装置、発電機等に適
用される軸受保護のための自動バイパス給油ラインに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply line requiring oil supply to a bearing, and more particularly to an automatic bypass oil supply line for bearing protection applied to turbines, speed reducers, generators and the like.
【０００２】[0002]
【従来の技術】従来タービンや減速装置及び発電機の軸
受給油ラインにおいて、何らかの原因により潤滑油給油
ライン圧力が低下した場合、補助油ポンプ、さらには非
常用油ポンプが自動起動して各軸受に潤滑油を給油して
いたが、その際潤滑油は油冷却器、油こし器を必ず通路
するため、これらの機器に油圧低下の原因がある場合に
は、軸受に給油できない可能性があった。2. Description of the Related Art In conventional bearing oil supply lines for turbines, speed reducers, and generators, if the lubricating oil oil supply line pressure drops for some reason, the auxiliary oil pump and also the emergency oil pump automatically start to operate on each bearing. Lubricating oil was being supplied, but at that time, the lubricating oil always passes through the oil cooler and the oil strainer, so if there is a cause of low hydraulic pressure in these devices, there was a possibility that the bearing could not be lubricated. .
【０００３】[0003]
【発明が解決しようとする課題】このように従来の軸受
給油ラインでは、潤滑油給油ライン圧力低下という非常
時においても、供給潤滑油が油冷却器及び油こし器を通
して供給される様に構成されているものが多い。しかし
ながら油圧低下の原因が油冷却器や油こし器にある場合
には、前記の様な構成のためタービン等の軸受に充分な
給油ができない欠点があった。そこで本発明は、前記従
来の課題を解決しようとするもので、潤滑油給油ライン
圧力低下の原因が油冷却器や油こし器にある場合であっ
ても、タービン等の軸受への高圧の潤滑油を確実に供給
して同軸受を保護できる軸受保護のための自動バイパス
給油ラインを提供しようとするものである。As described above, the conventional bearing oil supply line is configured so that the supplied lubricating oil is supplied through the oil cooler and the oil strainer even in an emergency when the lubricating oil supply line pressure drops. There are many things. However, when the oil cooler or the oil strainer causes the decrease in hydraulic pressure, there is a drawback that the bearings such as the turbine cannot be sufficiently lubricated due to the above-described configuration. Therefore, the present invention is intended to solve the above-mentioned conventional problems. Even when the cause of the decrease in the pressure of the lubricating oil supply line is in the oil cooler or the oil strainer, high-pressure lubrication for the bearings of the turbine or the like is performed. It is intended to provide an automatic bypass oil supply line for bearing protection capable of reliably supplying oil to protect the bearing.
【０００４】[0004]
【課題を解決するための手段】このため本発明は、潤滑
油給油ライン圧力低下時に起動される非常用ポンプの作
動によっても、なお前記ライン圧力が回復しない場合
に、前記非常用ポンプから油冷却器及び油こし器を経由
しての軸受への給油ラインを、非常用ポンプから油冷却
器及び油こし器をバイパスした軸受への給油ラインに切
替えることを特徴とするもので、これを課題解決のため
の手段とするものである。また本発明は、前記給油ライ
ンの切替えは、前記潤滑油給油ライン圧力低下を検出す
る圧力スイッチによって作動する三方電磁弁によって行
うように構成したものであり、また前記潤滑油給油ライ
ン圧力低下時に、異なった低下圧力をそれぞれ検出する
複数の圧力スイッチを油こし器の下流に設け、これら圧
力スイッチによって前記非常用油ポンプを起動すると共
に、同非常用ポンプの起動圧よりも低いライン圧力によ
って前記三方電磁弁を前記油冷却器及び油こし器をバイ
パスした給油ラインに切替えることを特徴とするもの
で、これを課題解決のための手段とするものである。Therefore, according to the present invention, when the line pressure is still not recovered by the operation of the emergency pump started when the pressure of the lubricating oil supply line is reduced, the oil cooling from the emergency pump is performed. The oil supply line to the bearing via the oil cooler and the oil strainer is switched to the oil supply line from the emergency pump to the bearing bypassing the oil cooler and the oil strainer. Is a means for. Further, the present invention is configured such that the switching of the lubricating oil supply line is performed by a three-way solenoid valve operated by a pressure switch that detects a decrease in the lubricating oil supply line pressure, and when the lubricating oil supply line pressure decreases, A plurality of pressure switches for detecting different reduced pressures are provided downstream of the oil strainer, and the emergency oil pump is started by these pressure switches, and the three-way pressure is set by the line pressure lower than the starting pressure of the emergency pump. The solenoid valve is switched to an oil supply line that bypasses the oil cooler and the oil strainer, which is a means for solving the problem.
【０００５】[0005]
【作用】本発明は、潤滑油用油こし器の下流出口に非常
用油ポンプの自動起動の設定圧力より更に低い値に設定
した圧力スイッチを設けたことによって、この設定圧力
まで潤滑油圧が低下した場合、非常用油ポンプ下流に設
けた三方電磁弁が切替わり、油冷却器及び油こし器を通
過するバイパスラインに潤滑油が流れる。これによっ
て、非常用油ポンプが作動しても、なお潤滑油給油ライ
ン圧力が回復しない場合には、油冷却器や油こし器にラ
イン圧低下の原因があるとして、これらをバイパスする
ように前記三方電磁弁が切替わるので、このような非常
時であっても、タービン等の軸受へ適正な高圧の潤滑油
を確実に供給して、同軸受を保護できることになる。According to the present invention, by providing a pressure switch set to a value lower than the set pressure for automatic start of the emergency oil pump at the downstream outlet of the lubricating oil strainer, the lubricating oil pressure is reduced to this set pressure. In that case, the three-way solenoid valve provided downstream of the emergency oil pump is switched, and the lubricating oil flows through the bypass line that passes through the oil cooler and the oil strainer. As a result, even if the emergency oil pump operates, if the lubricating oil refueling line pressure still does not recover, it is considered that there is a cause of the line pressure drop in the oil cooler and the oil strainer, and it is necessary to bypass them. Since the three-way solenoid valve is switched, even in such an emergency, it is possible to reliably supply appropriate high-pressure lubricating oil to the bearing of the turbine or the like to protect the bearing.
【０００６】[0006]
【実施例】以下本発明の実施例を図面について説明する
と、図１は本発明の実施例を示すシステムを線図で示し
たものである。通常時には、図示しない主ポンプにより
油タンク１から制御油ライン及びタービン等（減速装置
や発電機等）の軸受への潤滑油給油ラインへ油を供給す
る。潤滑油供給ラインは、前記制御油ラインから分岐し
て油量調整弁４、逆止弁５、油冷却器６、潤滑油温度調
節弁７、油こし器８及び逆止弁９が直列に順次配列され
て設けられ、タービン等の軸受へ潤滑油が供給される。
また前記制御油ラインには潤滑油給油ラインのライン圧
が低下したときに起動する補助油ポンプ２が設けられて
いる。一方油タンク１からは、非常用油ポンプ３と三方
電磁弁１０を介在して前記油冷却器６の上流に接続され
るラインと、前記三方電磁弁１０から前記油冷却器６、
潤滑油温度調節弁７、油こし器８及び逆止弁９をバイパ
スしてタービン等軸受へ接続されるバイパスラインが設
けられている。そして油こし器８の下流には、前記潤滑
油ライン圧力の低下時に、異なった低下圧ＰＳ１，ＰＳ
２，ＰＳ３をそれぞれ検出する複数の圧力スイッチ１
１，１２，１３が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a system showing the embodiment of the present invention. At normal times, oil is supplied from the oil tank 1 to the control oil line and the lubricating oil supply line to the bearings of the turbine and the like (reduction gear, generator, etc.) by the main pump (not shown). The lubricating oil supply line is branched from the control oil line, and an oil amount adjusting valve 4, a check valve 5, an oil cooler 6, a lubricating oil temperature adjusting valve 7, an oil strainer 8 and a check valve 9 are sequentially arranged in series. Lubricating oil is supplied to bearings such as turbines arranged in an array.
Further, the control oil line is provided with an auxiliary oil pump 2 which is started when the line pressure of the lubricating oil supply line decreases. On the other hand, from the oil tank 1, a line connected to the upstream of the oil cooler 6 via the emergency oil pump 3 and the three-way solenoid valve 10, and from the three-way solenoid valve 10 to the oil cooler 6,
A bypass line is provided that bypasses the lubricating oil temperature control valve 7, the oil strainer 8 and the check valve 9 and is connected to a bearing such as a turbine. Then, at the downstream of the oil strainer 8, when the lubricating oil line pressure is reduced, different reduced pressures PS1, PS
Multiple pressure switches 1 to detect 2 and PS3 respectively
1, 12, 13 are provided.
【０００７】次に前記の如く構成された実施例について
作用を説明する。何らかの原因によって潤滑油ラインの
圧力が低下し、圧力スイッチ（ＰＳ１）１１が作動する
と補助油ポンプ２が自動起動する。これによって、潤滑
油給油ラインに潤滑油が供給されるが、更に圧力が低下
して圧力スイッチ（ＰＳ２）１２が作動すると、非常用
油圧ポンプ３が自動起動する。この時三方電磁弁１０は
油冷却器６、油こし器８を通過する方向に開いている。
これでもライン圧が回復せず、更に圧力が低下し圧力ス
イッチ（ＰＳ３）１３が作動した場合、三方電磁弁１０
が切替わり、バイパスラインを通ってタービン等軸受へ
潤滑油が直接供給されるようになる。なお、この時油こ
し器８側へ逆流しない様に逆止弁９が設けられている。
これによって、非常用油ポンプ３が作動しても、なお潤
滑油給油ライン圧力が回復しない場合には、油冷却器６
や油こし器８にライン圧低下の原因があるとして、これ
らをバイパスするように前記三方電磁弁３が切替わるの
で、このような非常時であっても、タービン等の軸受へ
適正な高圧の潤滑油を確実に供給して、同軸受を保護で
きることになる。Next, the operation of the embodiment configured as described above will be described. For some reason, the pressure of the lubricating oil line drops, and when the pressure switch (PS1) 11 operates, the auxiliary oil pump 2 automatically starts. As a result, the lubricating oil is supplied to the lubricating oil supply line, but when the pressure further decreases and the pressure switch (PS2) 12 operates, the emergency hydraulic pump 3 automatically starts. At this time, the three-way solenoid valve 10 is open in the direction of passing through the oil cooler 6 and the oil strainer 8.
Even if the line pressure is not recovered even by this and the pressure further decreases and the pressure switch (PS3) 13 operates, the three-way solenoid valve 10
Will be switched, and the lubricating oil will be directly supplied to the bearing such as the turbine through the bypass line. At this time, a check valve 9 is provided to prevent backflow to the oil strainer 8 side.
As a result, even if the emergency oil pump 3 operates, if the lubricating oil supply line pressure still does not recover, the oil cooler 6
Assuming that there is a cause for the line pressure drop in the oil and oil strainer 8, the three-way solenoid valve 3 is switched so as to bypass the line pressure. The lubricating oil can be reliably supplied to protect the bearing.
【０００８】[0008]
【発明の効果】以上詳細に説明した如く本発明によれ
ば、非常用油ポンプを起動しても油冷却器、油こし器に
潤滑油ライン圧低下の原因があって潤滑油圧力が回復し
ない場合、これら油冷却器及び油こし器を三方電磁弁の
切替えによってバイパスするラインを通じて、タービン
等の軸受へ適正で高圧の潤滑油を直接、確実に供給する
ことが可能となる。従ってこのような非常時にあって
も、タービン等の軸受へ適正な高圧の潤滑油を確実に供
給することになるので、軸受焼損という重大災害を回避
することができる。As described above in detail, according to the present invention, even if the emergency oil pump is started, the lubricating oil pressure does not recover due to the decrease in the lubricating oil line pressure in the oil cooler and the oil strainer. In this case, it is possible to directly and reliably supply proper and high-pressure lubricating oil to bearings such as turbines through a line that bypasses these oil coolers and oil strainers by switching the three-way solenoid valves. Therefore, even in such an emergency, it is possible to surely supply the appropriate high-pressure lubricating oil to the bearings of the turbine or the like, so that it is possible to avoid a serious disaster of bearing burning.
【図１】本発明の実施例に係る自動バイパス給油ライン
のシステム図である。FIG. 1 is a system diagram of an automatic bypass refueling line according to an embodiment of the present invention.
１ 油タンク ２ 補助油ポンプ ３ 非常用油ポンプ ４ 油量調整弁 ６ 油冷却器 ８ 油こし器 １０ 三方電磁弁 １１，１２，１３ 圧力スイッチ 1 Oil tank 2 Auxiliary oil pump 3 Emergency oil pump 4 Oil amount adjustment valve 6 Oil cooler 8 Oil strainer 10 Three-way solenoid valve 11, 12, 13 Pressure switch
Claims (3)
る非常用ポンプの作動によっても、なお前記ライン圧力
が回復しない場合に、前記非常用ポンプから油冷却器及
び油こし器を経由しての軸受への給油ラインを非常用ポ
ンプから油冷却器及び油こし器をバイパスした軸受への
給油ラインに切替えることを特徴とする軸受保護のため
の自動バイパス給油ライン。1. When the line pressure is still not recovered by the operation of the emergency pump that is started when the pressure of the lubricating oil supply line is lowered, the emergency pump is operated via an oil cooler and an oil strainer. An automatic bypass lubrication line for bearing protection, characterized in that the lubrication line to the bearing is switched from the emergency pump to the lubrication line to the bearing that bypasses the oil cooler and the strainer.
給油ライン圧力低下を検出する圧力スイッチによって作
動する三方電磁弁によって行うように構成したことを特
徴とする請求項１記載の軸受保護のための自動バイパス
給油ライン。2. The bearing protection according to claim 1, wherein the switching of the oil supply line is performed by a three-way solenoid valve operated by a pressure switch that detects a pressure drop of the lubricating oil supply line. Automatic bypass refueling line.
なった低下圧力をそれぞれ検出する複数の圧力スイッチ
を油こし器の下流に設け、これら圧力スイッチによって
前記非常用油ポンプを起動すると共に、同非常用油ポン
プの起動圧よりも低いライン圧力によって、前記三方電
磁弁を前記油冷却器及び油こし器をバイパスした給油ラ
インに切替えることを特徴とする請求項２記載の軸受保
護のための自動バイパス給油ライン。3. A plurality of pressure switches for respectively detecting different reduced pressures when the pressure of the lubricating oil supply line is reduced are provided downstream of the oil strainer, and the emergency oil pump is activated by these pressure switches, 3. The automatic bearing protection system according to claim 2, wherein the line pressure lower than the starting pressure of the emergency oil pump switches the three-way solenoid valve to an oil supply line bypassing the oil cooler and the oil strainer. Bypass refueling line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12343394A JPH07332016A (en) | 1994-06-06 | 1994-06-06 | Automatic bypass oil feeding line for bearing protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12343394A JPH07332016A (en) | 1994-06-06 | 1994-06-06 | Automatic bypass oil feeding line for bearing protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07332016A true JPH07332016A (en) | 1995-12-19 |
Family
ID=14860458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12343394A Withdrawn JPH07332016A (en) | 1994-06-06 | 1994-06-06 | Automatic bypass oil feeding line for bearing protection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07332016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003226A (en) * | 2010-12-13 | 2011-04-06 | 上海电气电站设备有限公司 | Turbine bearing lubricating oil supply system |
| WO2013181051A1 (en) * | 2012-05-31 | 2013-12-05 | United Technologies Corporation | Lubrication arrangement for a gas turbine engine gear assembly |
| CN113217121A (en) * | 2021-06-09 | 2021-08-06 | 北京电力设备总厂有限公司 | Water-feeding pump turbine oil return and oil filtering system with online replacement of filter screen |
-
1994
- 1994-06-06 JP JP12343394A patent/JPH07332016A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003226A (en) * | 2010-12-13 | 2011-04-06 | 上海电气电站设备有限公司 | Turbine bearing lubricating oil supply system |
| WO2013181051A1 (en) * | 2012-05-31 | 2013-12-05 | United Technologies Corporation | Lubrication arrangement for a gas turbine engine gear assembly |
| US8833086B2 (en) | 2012-05-31 | 2014-09-16 | United Technologies Corporation | Lubrication arrangement for a gas turbine engine gear assembly |
| US8844257B2 (en) | 2012-05-31 | 2014-09-30 | United Technologies Corporation | Bypass arrangement of a lubrication valve for a gas turbine engine gear assembly |
| CN113217121A (en) * | 2021-06-09 | 2021-08-06 | 北京电力设备总厂有限公司 | Water-feeding pump turbine oil return and oil filtering system with online replacement of filter screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010904 |