JPS59137609A - Device for detecting abnormality in hydraulic oil volume in hydraulic circuit - Google Patents
Device for detecting abnormality in hydraulic oil volume in hydraulic circuitInfo
- Publication number
- JPS59137609A JPS59137609A JP58009855A JP985583A JPS59137609A JP S59137609 A JPS59137609 A JP S59137609A JP 58009855 A JP58009855 A JP 58009855A JP 985583 A JP985583 A JP 985583A JP S59137609 A JPS59137609 A JP S59137609A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- tank
- pressure
- hydraulic circuit
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Hydraulic Turbines (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、油圧回路の油量異常検出装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an oil amount abnormality detection device for a hydraulic circuit.
第１図は従来の水力発電所における水車の水量調整用の
案内羽根、または大口弁を操作する油圧サーボモータを
制御するために設けられた油圧回路を示す。図において
、ｌは圧油タンク、２は集油タンク、３は油圧サーボモ
ータ制ｆｉ１１装置、４は油圧サーボモータ、５は圧油
ポンプ、６は電気料−装置である。また、７ａ、７ｂは
圧油タンク油面上昇、低下検出器、８ａ、８ｂは集油タ
ンク油面上昇、低下検出器、９は圧力開閉器で、油圧回
路はこれらの機器によ多構成されている。FIG. 1 shows a hydraulic circuit provided for controlling a hydraulic servo motor that operates a guide vane or a large mouth valve for adjusting the amount of water in a water turbine in a conventional hydroelectric power plant. In the figure, 1 is a pressure oil tank, 2 is an oil collection tank, 3 is a hydraulic servo motor control fi11 device, 4 is a hydraulic servo motor, 5 is a pressure oil pump, and 6 is an electric power device. Further, 7a and 7b are pressure oil tank oil level rise and fall detectors, 8a and 8b are oil collection tank oil level rise and fall detectors, and 9 is a pressure switch, and the hydraulic circuit is comprised of these devices. ing.
油圧サーボモータ４は、油圧す、−ポモータ制−装置３
を介して圧油タンク１に貯えられた油により所定の動作
を行なうようになっている。そして、゛圧油タンク１内
の油を消費すると、圧油タンク１内の圧力は降下し、圧
油タンク常用下限油圧の規定圧力に達すると、圧力開閉
器９が作動し電気制御装置６を介し圧油ポンプ５が駆動
され、圧油タンク１内に油が送られ、圧油タンク１内の
圧力が上昇し圧油タンク常用上限前圧の規定圧力Ａ（第
２図参照）に達すると、圧力開閉器９が復帰し電気制御
装置６により油圧ポンプ５は停止され、集油タンク４内
の油面は圧油タンク１に送り込まれた油の分だけ低下す
る。以上の動作の操り返えしにより圧油タンク１内の圧
力は常に規定範囲内に保たれるようになっている。The hydraulic servo motor 4 is a hydraulic servo motor control device 3.
Predetermined operations are performed using oil stored in the pressure oil tank 1 via the oil pressure tank 1. When the oil in the pressure oil tank 1 is consumed, the pressure in the pressure oil tank 1 drops, and when it reaches the specified pressure of the lower limit oil pressure for normal use in the pressure oil tank, the pressure switch 9 is activated and the electric control device 6 is activated. When the pressure oil pump 5 is driven and oil is sent into the pressure oil tank 1, the pressure in the pressure oil tank 1 rises and reaches the specified pressure A (see Fig. 2), which is the normal upper limit pressure of the pressure oil tank. , the pressure switch 9 returns, the hydraulic pump 5 is stopped by the electric control device 6, and the oil level in the oil collection tank 4 drops by the amount of oil sent into the pressure oil tank 1. By repeating the above operations, the pressure within the pressure oil tank 1 is always maintained within a specified range.
従来の油面を検出して間接的に油圧回路内の油量の異常
を検出する方法の不具合点を第２図にょシ説明する。圧
油タンク１内の油面は、圧油タンク内空気量一定のもと
に、圧油タンク内油面上限Ａ−圧油タンク内油面下限Ａ
′を基準に変動する。The disadvantages of the conventional method of indirectly detecting an abnormality in the amount of oil in a hydraulic circuit by detecting the oil level will be explained with reference to FIG. The oil level in the pressure oil tank 1 is determined by the upper limit A of the oil level in the pressure oil tank - the lower limit A of the oil level in the pressure oil tank under the condition that the amount of air in the pressure oil tank is constant.
′ is the standard.
その結果、集油タンク２内の油面は、集油タンク内油面
下限Ｂ−集油タンク内油面上限Ｂ′を基準に変動する。As a result, the oil level in the oil collecting tank 2 changes based on the lower limit B of the oil level in the oil collecting tank - the upper limit B' of the oil level in the oil collecting tank.
しかしながら、圧油タンク１内の空気量、圧力は一定値
になるように制御されているが実際には許容幅があるた
め、圧油タンク１内の油面は、第２図のＡ、−Ａ、’と
Ａ２ Ａ２’の範囲にて変動する。この結果、集油タン
ク２内の油面は第２図のＢｏ Ｂｏ’とＢ、−Ｂ、’
の範囲にて変動する。However, although the air amount and pressure in the pressure oil tank 1 are controlled to be constant values, there is actually a permissible range, so the oil level in the pressure oil tank 1 is A, - in Fig. 2. It varies within the range of A,' and A2 A2'. As a result, the oil level in the oil collecting tank 2 is as shown in Fig. 2 as Bo Bo' and B, -B,'.
It varies within the range of.
第１図の油圧サーボモータ４の作動による消費油量が、
圧油ポンプ５の吐出量よシ少ない場合には圧油タンク１
内の圧力は常に常用下限油圧以上を確保できるため、圧
油タンク１内油面は圧油タンク内油面基準値以上で変動
する。その結果、集油タンク２内油面は集油タンク内油
面基準領以下で変動する。即ち、定常時油面範囲内の変
動となる。The amount of oil consumed by the operation of the hydraulic servo motor 4 in Fig. 1 is
If the discharge amount is less than that of the pressure oil pump 5, the pressure oil tank 1
Since the pressure within the pressure oil tank 1 can always be ensured to be equal to or higher than the normal lower limit oil pressure, the oil level within the pressure oil tank 1 fluctuates at or above the reference oil level within the pressure oil tank. As a result, the oil level in the oil collection tank 2 fluctuates below the oil level reference area in the oil collection tank. In other words, the oil level fluctuates within the normal oil level range.
一方、油圧サーボモータ４を急動作させる場合には油圧
サーボモータ急動作による消費油量が圧油ホ７７” ５
の吐出量よシ多くなシ圧油タンク１内圧力は過渡的に常
用油圧以下になるため、圧油タンク内油前而は圧油タン
ク内油面基準値以下で変動する。その結果、集油タンク
２内油面は集油タンク内油面基準値以上で変動する。即
ち、過渡時油面範囲内の変動となる。この変動量は、圧
油ポンプ５の吐出片、圧油タンク１の容量、油圧サーボ
モータ４の容量及び開、閉動作速度（時間）により異な
る。On the other hand, when the hydraulic servo motor 4 is suddenly operated, the amount of oil consumed due to the sudden operation of the hydraulic servo motor is 77" 5.
Since the pressure inside the pressure oil tank 1, which is larger than the discharge amount, temporarily becomes lower than the normal oil pressure, the oil level inside the pressure oil tank fluctuates below the reference value of the oil level in the pressure oil tank. As a result, the oil level in the oil collecting tank 2 fluctuates above the reference value for the oil level in the oil collecting tank. In other words, the oil level fluctuates within the transient oil level range. The amount of variation varies depending on the discharge piece of the pressure oil pump 5, the capacity of the pressure oil tank 1, the capacity of the hydraulic servo motor 4, and the opening/closing operation speed (time).
以上のことを考慮したうえ宥干の予裕を設け、圧油タン
ク油面上昇低下検出器７ａ、７ｂｌｄそれぞれ第２図の
Ａ１点、Ａｓ７点に、また、集油タンク油面上昇、低下
検出器ｓａ、ｓｂはそれぞれ第２図の８１点、８３７点
に設定されている。従って、定常時油面範囲においては
、圧油タンク１の許容油面範囲は第２′図のＡ ＨＡ
Ｉ“とＡ４ Ａ４’となり、集油タンク２の許容油面
範囲はＢ、−Ｂ、“とＢａ Ｂ４’ となるため油
面（油量）が大きく変化しないと異状検出ができない。Taking the above into consideration, a margin for flushing is provided, and pressure oil tank oil level rise/fall detectors 7a and 7bld are installed at points A1 and As7 in Fig. 2, respectively, and also detect rise and fall of oil level in the oil collection tank. The instruments sa and sb are set at 81 points and 837 points in FIG. 2, respectively. Therefore, in the steady state oil level range, the allowable oil level range of the pressure oil tank 1 is A HA in Figure 2'.
I'' and A4 A4', and the allowable oil level range of the oil collection tank 2 is B, -B, and Ba B4', so abnormality cannot be detected unless the oil level (oil amount) changes significantly.
即ち、Ｂ１１の若へ直線移動【７集油メンク油面上昇警
報Ｂ３／に至らぬと警報を発生しないので異常を迅速に
検出できないため、漏油現象もしくは異流体の混入その
他の異常を早期に発見を要する見地から問題であった。In other words, the alarm is not generated until B11 is moved in a straight line to the bottom [7 Oil collection level rise alarm B3/], so abnormalities cannot be detected quickly. It was a problem from the standpoint of requiring discovery.
本発明は上記の状況に鑑みなされたものであり、油圧回
路内の油量の異常を早期に検出でき、安全。The present invention was developed in view of the above situation, and it is possible to detect abnormalities in the amount of oil in the hydraulic circuit at an early stage, and is therefore safe.
信頼性を向上できる油圧回路の油量異常検出装置を提供
することを目的としたものである。The object of the present invention is to provide an oil amount abnormality detection device for a hydraulic circuit that can improve reliability.
Claims (1)
または入口弁操作用の油圧サーボモータを制御する圧油
タンク、圧油ポンプ、上記圧油タンクの油面低下に応じ
上記圧油ポンプを介し油を供給する集油タンク及び油圧
サーボモータ制御装置等からなる油圧回路において、油
量が相互に関連して変化する上記油圧タンク及び集油タ
ンク内のそれぞれの油量を連続して常時、または一定時
間毎に検知する圧油タンク油面センサー及び集油タンク
油面センサーと、油圧回路内の油量を監視制御し、かつ
、上記油面センサーから送られる信号に基づく両タンク
の油量の和が許容範囲を越えたとき油圧回路の油量異常
の信号を発生するように形成された演算制御装置とを設
けたことを特徴とする油圧回路の油量異常検出装置。 ２ 上記演算制御装置が、上記油面センサーから予め定
められた上記油圧タンク及び集油タンクのそれぞれの油
面の最大値及び最小値の信号を受けて油量異常信号を発
するよ゛うに形成されている特許請求の範囲第１項記載
の油圧回路の油量異常検出装置。[Claims] 1. Guide vanes for adjusting water volume of a water wheel in a hydroelectric power plant;
Or a pressure oil tank that controls a hydraulic servo motor for operating an inlet valve, a pressure oil pump, an oil collection tank that supplies oil via the pressure oil pump when the oil level in the pressure oil tank drops, and a hydraulic servo motor control device, etc. In the hydraulic circuit, there is provided a pressure oil tank oil level sensor and a collector for continuously detecting the respective oil amounts in the hydraulic tank and the oil collecting tank, the oil amounts of which change in relation to each other, either continuously or at regular intervals. The oil level sensor in the oil tank and the oil level in the hydraulic circuit are monitored and controlled, and when the sum of the oil levels in both tanks exceeds the permissible range based on the signal sent from the oil level sensor, the oil level in the hydraulic circuit is abnormal. 1. An oil amount abnormality detection device for a hydraulic circuit, comprising: an arithmetic and control device configured to generate a signal. 2. The arithmetic and control device is configured to receive predetermined maximum and minimum oil level signals from the oil level sensor in each of the hydraulic tank and the oil collection tank, and generate an oil amount abnormality signal. An oil amount abnormality detection device for a hydraulic circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58009855A JPS59137609A (en) | 1983-01-26 | 1983-01-26 | Device for detecting abnormality in hydraulic oil volume in hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58009855A JPS59137609A (en) | 1983-01-26 | 1983-01-26 | Device for detecting abnormality in hydraulic oil volume in hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59137609A true JPS59137609A (en) | 1984-08-07 |
| JPH042801B2 JPH042801B2 (en) | 1992-01-21 |
Family
ID=11731742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58009855A Granted JPS59137609A (en) | 1983-01-26 | 1983-01-26 | Device for detecting abnormality in hydraulic oil volume in hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59137609A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009167253A (en) * | 2008-01-11 | 2009-07-30 | Fujifilm Corp | Member for business machine |
| CN104047926A (en) * | 2014-06-20 | 2014-09-17 | 济钢集团有限公司 | Pump station oil leakage prevention and control method and system of hydraulic system and lubrication system |
| CN109654090A (en) * | 2019-01-04 | 2019-04-19 | 安徽天水液压机床科技有限公司 | A kind of application method of multi-machine parallel connection numerical-control hydraulic sheet metal tubulation molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654286U (en) * | 1979-10-04 | 1981-05-12 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5372821A (en) * | 1976-12-09 | 1978-06-28 | Sumitomo Chem Co Ltd | Aerosol insecticides |
-
1983
- 1983-01-26 JP JP58009855A patent/JPS59137609A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654286U (en) * | 1979-10-04 | 1981-05-12 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009167253A (en) * | 2008-01-11 | 2009-07-30 | Fujifilm Corp | Member for business machine |
| CN104047926A (en) * | 2014-06-20 | 2014-09-17 | 济钢集团有限公司 | Pump station oil leakage prevention and control method and system of hydraulic system and lubrication system |
| CN109654090A (en) * | 2019-01-04 | 2019-04-19 | 安徽天水液压机床科技有限公司 | A kind of application method of multi-machine parallel connection numerical-control hydraulic sheet metal tubulation molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH042801B2 (en) | 1992-01-21 |
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