CN214404144U - Speed regulation oil system of water turbine - Google Patents
Speed regulation oil system of water turbine Download PDFInfo
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- CN214404144U CN214404144U CN202120518905.3U CN202120518905U CN214404144U CN 214404144 U CN214404144 U CN 214404144U CN 202120518905 U CN202120518905 U CN 202120518905U CN 214404144 U CN214404144 U CN 214404144U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The utility model provides a speed regulation oil system of a water turbine, which comprises a pressure oil tank, wherein the pressure oil tank is connected with an oil return tank through a pressure oil pump; the pressure oil tank is also connected with oil utilization equipment through a valve bank; the oil loop of the valve group is also communicated with an oil return tank; the valve group is connected with the oil leakage tank; the oil leakage tank is connected with the oil return tank through a pressure oil pump; the pressure oil tank, the oil return tank and the oil leakage tank are respectively provided with a liquid level sensor, a real-time oil level acquisition sensor is respectively connected with the PLC control module, and the PLC control module is provided with an alarm. The utility model provides a current speed governing oil system protection can't in time discover and remind fortune dimension personnel troubleshooting at the fault development initial stage when unusual oil leak, oil impregnate, the utility model discloses the oil total amount rate of rise is too fast and the upper limit is reported to the police in having set up the oil storage container, therefore the utility model discloses also can intake to the oil leakage case and supply the monitoring.
Description
Technical Field
The utility model discloses concrete speed regulator oil system technical field specifically is a hydraulic turbine speed governing oil system.
Background
The oil system of the speed regulator is a closed circulating oil circuit consisting of oil storage equipment, oil utilization equipment, oil treatment equipment, a valve group and pipelines. The oil pressing device in the speed regulating system mainly provides energy for unit operation (some also provide pressure oil for a water inlet valve and a water inlet gate hydraulic operation system).
The oil pressing device generates and stores high-pressure oil for the operation of the unit, the high-reliability operation of the oil pressing device is an important guarantee for the safe operation of main equipment of the hydroelectric generating unit, and the oil level, the oil pressure and the oil quality in the oil pressing device all need to meet certain requirements. The abnormal oil leakage and oil leakage are common faults of the speed regulating oil system, the protection of the existing speed regulating oil system is mainly that the oil level and the oil pressure in the oil pressing device are out of limit for alarming, because the oil pump automatically supplements the oil returning to the oil pressing device under the normal condition, the air supplementing device automatically supplements the compressed air of the oil pressing device, when the oil level and the oil pressure in the oil pressing device are out of limit for alarming, the oil leakage and the oil leakage are serious, and the protection action is stopped emergently. In order to timely find and remind operation and maintenance personnel to eliminate faults in the early stage of abnormal oil leakage and oil leakage development of a speed regulating oil system, avoid the economic loss of a power plant caused by the fact that a unit cannot generate power and unplanned shutdown examination is carried out to avoid protection action emergency shutdown, and provide a scheme for monitoring oil leakage and oil leakage of the speed regulating oil system.
In order to ensure the normal operation of the unit, the oil pressure and the oil level of an oil pressing device in the speed regulating oil system must be changed within a normal working range value. The range values of normal working oil pressure and oil level of different units are different. (for example, the normal working oil pressure of the speed regulating system of the Taiping power plant unit is 3.59MPa to 3.97MPa, and the normal working oil level is 300mm to 600 mm). Under normal conditions, the oil pump automatically maintains the oil level of an oil supplementing and oil pressing device of the oil return tank within a normal range, the air supplementing device automatically supplements compressed air to maintain the oil pressure of the oil pressing device within a normal range, and when the oil level or the oil pressure exceeds the range of a normal working value, an out-of-limit alarm is generated.
When the speed regulating oil system leaks oil or leaks oil abnormally, the oil pump and the air supplement device work normally under normal conditions, and the oil level and the oil pressure of the oil pressing device are automatically maintained within a normal range, so that the oil level or the oil pressure out-of-limit alarm cannot be triggered in the initial stage of the abnormal oil leakage and oil leakage of the speed regulating oil system. When the oil level and the oil pressure in the oil pressing device are out of limit and alarm is given, the oil leakage and the oil leakage are serious, the protection action is stopped emergently, the unit cannot generate electricity, and the economic loss of a power plant is caused by the unplanned stop examination.
When the speed regulating oil system leaks and seeps oil abnormally, the oil level and the oil pressure of the oil pressing device are reduced faster than those under the normal working condition, the oil pump and the automatic air supply device are started more frequently, the starting frequency of the oil pump and the automatic air supply device of the oil pressing device is counted, and compared with the starting frequency under the normal working condition, an abnormal alarm is given.
Under the condition that the unit needs more operation energy sources under certain normal working conditions (such as starting and stopping, frequent action of primary frequency modulation of the unit and the like), the oil level and the oil pressure of the oil pressing device also drop quickly, and the oil pump and the automatic air supply device are also started frequently. Meanwhile, faults can not be found at the initial stage of abnormal oil leakage and oil leakage development of the speed regulating oil system, and when the oil pump and the automatic air supply device are frequently started to alarm, the faults are developed to a certain degree.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides a hydraulic turbine speed governing oil system, in order to solve current speed governing oil system protection can't in time discover and remind fortune dimension personnel troubleshooting in the fault development initial stage when unusual oil leak, oil impregnate, avoid protection action emergency shutdown, the unable electricity generation of unit and unplanned shut down the examination and cause power plant economic loss.
The specific technical scheme is as follows:
the hydraulic turbine speed regulating oil system comprises a pressure oil tank, wherein the pressure oil tank is connected with an oil return tank through a pressure oil pump;
the pressure oil tank is also connected with oil utilization equipment through a valve bank; the oil loop of the valve group is also communicated with an oil return tank;
the valve group is connected with the oil leakage tank; the oil leakage tank is connected with the oil return tank through a pressure oil pump;
the pressure oil tank, the oil return tank and the oil leakage tank are respectively provided with a liquid level sensor, a real-time oil level acquisition sensor is respectively connected with the PLC control module, and the PLC control module is provided with an alarm.
The pressure oil tank is provided with a monitoring control instrument and is connected with an air supplementing device.
The liquid level sensor collects the oil levels of the pressure oil tank, the oil return tank and the oil leakage tank in real time, the change condition of the total oil quantity of the oil storage container is calculated and analyzed, and when the rising/falling rate of the total oil quantity in the oil storage container is too high or the rising/falling rate exceeds a limit value, an abnormal alarm is given out to remind operation and maintenance personnel to eliminate faults in time.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model solves the problems that the existing speed regulating oil system can not find and remind the operation and maintenance personnel to eliminate the fault in the initial stage of fault development when abnormal oil leakage and oil seepage occur, and avoids the economic loss of the power plant caused by that the unit can not generate electricity and the unplanned machine halt is examined; the utility model utilizes the existing monitoring equipment and monitoring information of the system, thereby avoiding the increase of investment cost caused by the repeated installation of the sensing equipment; because the oil leakage box is generally installed in the factory building bottom, the utility model discloses set up in the oil storage container that the oil total amount rate of rise is too fast and the upper limit is reported to the police, therefore the utility model discloses also can intake to the oil leakage box and supply the monitoring.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following drawings and examples, but the present invention is not limited thereto.
As shown in fig. 1, the hydraulic turbine speed regulation oil system comprises a pressure oil tank 1, wherein the pressure oil tank 1 is connected with an oil return tank 2 through a pressure oil pump;
the pressure oil tank 1 is also connected with an oil utilization device 4 through a valve group 6; the oil loop of the valve group 6 is also communicated with the oil return tank 2;
the valve group 6 is connected with the oil leakage tank 3; the oil leakage tank 3 is connected with the oil return tank 2 through a pressure oil pump;
the pressure oil tank 1, the oil return tank 2 and the oil leakage tank 3 are respectively provided with a liquid level sensor, a real-time oil level acquisition sensor and a PLC control module, and the PLC control module is provided with an alarm.
And the pressure oil tank 1 is provided with a monitoring control instrument 7 and is connected with an air supplementing device.
The pressure oil tank 1 is a counter-force type pressure accumulator formed by compressed gas, and is a place where normal oil pressure and oil level are formed, and the change of the ratio of oil and compressed air in the pressure oil tank 1 forms pressure energy which is working energy required for ensuring the operation of a regulating system. When the oil pressure of the pressure oil tank 1 is reduced to the lower limit of the working oil pressure, the air supply device automatically supplies air until the working oil pressure is recovered to a certain upper limit.
The pressure oil pump is a power source of a pressure oil device, and pressure oil circulates in storage equipment such as a pressure oil tank 1 and an oil return tank 2 through the work of an oil pump motor. When the oil level of the pressure oil tank 1 is reduced to the lower limit of the working oil level, the oil pump motor is operated, and the oil pump injects oil into the pressure oil tank 1 until the working oil level is recovered to a certain upper limit.
The return tank 2 is a tank-shaped container for storing non-pressurized oil, and is a main storage device for oil used in the entire control system.
The oil leakage tank 3 receives pressure oil leaked in the system in the operation process of the oil system, and when the oil amount in the oil leakage tank 3 reaches a certain height, an oil pump of the oil leakage tank 3 is automatically started to pump the oil into the oil return tank 2.
The working process of the speed-regulating oil system is that the pressure oil pump rotates to suck cleaning oil into the oil pump, and the cleaning oil enters the pressure oil tank 1 through a valve at the outlet of the pressure oil pump to store pressure energy. The pressure oil in the pressure oil tank 1 is sent to each oil utilization device 4 through an outlet, all return oil enters the oil return tank 2, is sent to the pressure oil tank 1 by the pressure oil pump after being filtered, and is circulated in a reciprocating mode. And a small part of oil leaks in the system operation process, the part of oil enters the oil leakage tank 3 through a pipeline, and when the oil level of the oil leakage tank 3 exceeds the maximum limit, the oil pump of the oil leakage tank 3 is started to send the oil into the oil return tank 2, and the operation is repeated.
The speed regulating oil system is a closed oil circuit system, under the condition that abnormal (external) oil leakage and oil seepage do not occur, the total oil quantity of the system is constant, and the oil quantity of each pipeline of the oil system is fixed, so that the oil quantity only changes in the oil storage containers of the pressure oil tank 1, the oil return tank 2 and the oil leakage tank 3, and the total oil quantity in the oil storage containers of the pressure oil tank 1, the oil return tank 2 and the oil leakage tank 3 is also constant under normal conditions, namely C is H1S 1+ H2S 2+ H3S 3 (C: the total oil quantity in the oil storage containers, H1: the oil level of the pressure oil tank 1, S1: the bottom area of the pressure oil tank 1, H2: the oil level of the oil return tank 2, S2: the bottom area of the oil return tank 2, H3: the oil level of the oil leakage tank 3, S3: the oil leakage tank 3 area), and under normal conditions, the total oil quantity C in the oil storage containers is changed within the error range of the measurement precision of the sensor.
The method comprises the steps of setting a liquid level sensor to collect the oil level of an H1 pressure oil tank 1, the oil level of an H2 oil return tank 2 and the oil level of an H3 oil leakage tank 3 in real time and sending the oil levels to a PLC analog input module, verifying the bottom area of the S1 pressure oil tank 1, the bottom area of the S2 oil return tank 2 and the bottom area of the S3 oil leakage tank 3 in advance, calculating and analyzing the change condition of the total oil quantity C in an oil storage container in real time by utilizing PLC programming (C is H1S 1+ H2S 2+ H3S 3), and outputting an alarm signal by a PLC output module when the rising/falling rate of the total oil quantity C in the oil storage container is too fast or the rising/falling rate exceeds a limit value so as to remind operation and maintenance personnel to eliminate faults.
The data acquisition, calculation, analysis and abnormal alarm can be completed in other modes such as a PCC programmable computer controller, a computer monitoring system and the like without a PLC programmable logic controller.
Claims (2)
1. The speed regulation oil system of the water turbine is characterized by comprising a pressure oil tank (1), wherein the pressure oil tank (1) is connected with an oil return tank (2) through a pressure oil pump;
the pressure oil tank (1) is also connected with the oil utilization equipment (4) through a valve group (6); an oil loop of the valve group (6) is also communicated with the oil return tank (2);
the valve group (6) is connected with the oil leakage tank (3); the oil leakage tank (3) is connected with the oil return tank (2) through a pressure oil pump;
the pressure oil tank (1), the oil return tank (2) and the oil leakage tank (3) are respectively provided with a liquid level sensor, a real-time oil level acquisition sensor is respectively connected with the PLC control module, and the PLC control module is provided with an alarm.
2. The hydraulic turbine speed governing oil system according to claim 1, characterized in that the pressure oil tank (1) is provided with a monitoring control instrument (7) and is connected with an air supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518905.3U CN214404144U (en) | 2021-03-11 | 2021-03-11 | Speed regulation oil system of water turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518905.3U CN214404144U (en) | 2021-03-11 | 2021-03-11 | Speed regulation oil system of water turbine |
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| CN214404144U true CN214404144U (en) | 2021-10-15 |
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| CN202120518905.3U Active CN214404144U (en) | 2021-03-11 | 2021-03-11 | Speed regulation oil system of water turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017421A (en) * | 2021-11-18 | 2022-02-08 | 中国长江电力股份有限公司 | System and method for monitoring oil leakage of speed regulator hydraulic system |
| CN116146477A (en) * | 2023-03-13 | 2023-05-23 | 华能澜沧江水电股份有限公司 | Method and device for predicting abnormal efficiency of oil pump of water turbine governor |
| CN117079435A (en) * | 2023-08-25 | 2023-11-17 | 中国能源建设股份有限公司 | Early warning method and system for oil tank of compressed air energy storage power station compressor |
-
2021
- 2021-03-11 CN CN202120518905.3U patent/CN214404144U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017421A (en) * | 2021-11-18 | 2022-02-08 | 中国长江电力股份有限公司 | System and method for monitoring oil leakage of speed regulator hydraulic system |
| CN116146477A (en) * | 2023-03-13 | 2023-05-23 | 华能澜沧江水电股份有限公司 | Method and device for predicting abnormal efficiency of oil pump of water turbine governor |
| CN117079435A (en) * | 2023-08-25 | 2023-11-17 | 中国能源建设股份有限公司 | Early warning method and system for oil tank of compressed air energy storage power station compressor |
| CN117079435B (en) * | 2023-08-25 | 2024-10-01 | 中国能源建设股份有限公司 | Early warning method and system for oil tank of compressed air energy storage power station compressor |
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