CN116906245A - Intelligent control and early warning method for hydraulic system of giant hydraulic turbine governor - Google Patents
Intelligent control and early warning method for hydraulic system of giant hydraulic turbine governor Download PDFInfo
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- CN116906245A CN116906245A CN202310698002.1A CN202310698002A CN116906245A CN 116906245 A CN116906245 A CN 116906245A CN 202310698002 A CN202310698002 A CN 202310698002A CN 116906245 A CN116906245 A CN 116906245A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000003921 oil Substances 0.000 claims abstract description 311
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 4
- 230000004089 microcirculation Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000010723 turbine oil Substances 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The application discloses an intelligent control and early warning method for a hydraulic system of a giant hydraulic turbine governor, which comprises the following steps: s1, performing constant temperature control on the temperature of hydraulic oil in an oil return tank to maintain the temperature at a constant temperature T; s2: early warning is carried out on the air leakage condition of the pressure oil tank; s3: early warning is carried out on the oil leakage condition of the hydraulic system; according to the application, the oil temperature of the hydraulic system is maintained at the optimal operation temperature through constant temperature control, the oil leakage condition of the hydraulic system caused by the deterioration of the sealing element is reduced from the source, the reliability of the action of the speed regulating system is improved, the sensitivity of the leakage monitoring of the hydraulic system is greatly improved through related calculation and the monitoring of the total oil quantity change speed of the hydraulic system, the phenomena that the oil level of the pressure oil tank is too high and the liquid level of the oil return tank is too low caused by oil leakage and gas leakage in the operation process of the hydraulic system can be effectively solved through control logic, and early warning signals are timely sent out.
Description
Technical Field
The application relates to the technical field of speed regulator hydraulic systems, in particular to an intelligent control and early warning method for a giant hydraulic turbine speed regulator hydraulic system.
Background
The startup, shutdown, load adjustment and the like of the hydroelectric generating set are realized through a speed regulator. The speed regulator is used as a core control component of the giant water turbine, and high-pressure turbine oil is generally used as a control oil source of the speed regulator. The stable and reliable control oil source is provided by the hydraulic system of the speed regulating system. The hydraulic system of the speed regulator mainly comprises a pressure oil pump, a pressure oil tank, an oil return tank, an isolating valve, a gas supplementing valve, a cooler, related pipelines, valves and control elements. The pressure oil tank has about 1/3 of oil and 2/3 of gas, and the top is provided with a gas compensating valve. The main function of the hydraulic system is to maintain the oil level of the pressure oil tank and the oil return tank at normal values and keep the pressure of the pressure oil tank within a reasonable range.
The prior art scheme controls the start and stop of the oil pump through the oil pressure of the pressure pipeline. When the pressure is lower than the loading set value, the oil pump is loaded, and the oil in the oil return tank is pumped into the pressure oil tank through the pressure oil pump so as to maintain stable oil pressure. When the pressure of the pressure pipeline and the pressure oil tank reaches the unloading set value, the oil pump is unloaded, and the pressurization is stopped. For oil level monitoring, the prior art solutions alarm by returning or pressing the tank to a low fixed value, i.e. the oil level is below a set value. For oil temperature monitoring, the prior art solutions start the cooler when the oil temperature is above 45 degrees celsius and stop the cooler below 35 degrees celsius. When the oil temperature is low, no treatment measures are taken.
The disadvantages of the prior art are as follows:
1. the existing method for maintaining the pressure of the pressure oil tank does not consider the condition that the pressure oil tank and related pipelines leak air. In the actual production process, the pressure oil tank is found to have air leakage, and oil needs to be continuously pumped into the pressure oil tank if the pressure of the pressure oil tank is required to be maintained, so that the phenomenon that the oil level of the pressure oil tank is too high and the liquid level of the oil return tank is too low is caused. Often requiring manual adjustment. And the manual operation of the high-pressure ball valve has great equipment safety risks.
2. At present, an intelligent oil leakage and gas leakage monitoring and early warning system of a hydraulic system does not exist.
3. The pressure oil temperature of the hydraulic system has larger variation amplitude, which is unfavorable to the sealing element in the speed regulator; and too low a temperature of the turbine oil is detrimental to the operational reliability of the oil passing components inside the governor.
4. In the existing mode of adjusting the liquid level only by means of oil pump loading/unloading, all starting conditions are often met before the starting-up process of the unit is started, when the starting-up process is started to the step of starting the hydraulic system, the liquid level of the oil return tank is reported to be low, so that the starting-up condition of the unit is not met, and the starting-up success rate of the unit is reduced. The starting success rate is an important assessment index for the running condition of the hydroelectric generating set.
Disclosure of Invention
The application aims to overcome the defects and provide an intelligent control and early warning method for a hydraulic system of a giant hydraulic turbine governor, so as to solve the problems in the background art.
The application aims to solve the technical problems, and adopts the technical scheme that: an intelligent control and early warning method for a hydraulic system of a giant hydraulic turbine governor comprises the following steps:
s1, performing constant temperature control on the temperature of hydraulic oil in an oil return tank to maintain the temperature at a constant temperature T;
s2: early warning is carried out on the air leakage condition of the pressure oil tank;
s3: and (5) early warning is carried out on the oil leakage condition of the hydraulic system.
Preferably, the temperature constant T in S1 is 35 ℃.
Preferably, the specific thermostatic control method of S1 is as follows:
s1.1, if the temperature of the oil in the oil return tank is lower than 35 ℃, automatically starting a heater arranged at the bottom of the oil return tank; if the oil temperature in the oil return tank is higher than 35 ℃, stopping heating by the heater, and putting the cooler into operation for cooling;
s1.2, when the heater heats and the pressure oil pump does not operate, the micro circulating pump is started, and the micro circulation of the oil in the oil return tank is kept.
Preferably, the step S2 specifically includes the following steps:
s2.1, set H g Is the high oil level alarm value of the pressure oil tank, H d The low oil level alarm value of the pressure oil tank; then H b Is a target oil level of the pressure tank, and has a value (H g -H d )/2+H d ；
S2.2, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 1 And the oil level in the pressure oil tank is more than or equal to H b When the pressure is applied, the pressure oil pump is stopped; at this time if the pressure is not reachedTo P 2 Judging that the pressure oil tank has slight air leakage, sending out an early warning signal, and opening an air supplementing valve at the top of the pressure oil tank to supplement air until the pressure of the pressure oil tank is more than or equal to P 2 Stopping when the operation is stopped;
s2.3, when the pressure of the pressure oil tank is lower than P 1 When the oil level of the pressure oil tank is more than or equal to H, the pressure oil pump is started to load b If the pressure of the pressure oil tank is not greater than P 1 Judging that the pressure oil tank has serious air leakage, and continuously loading the pressure oil pump until the oil pressure is greater than P 1 Simultaneously, an early warning signal is sent out to inform an operator to immediately process;
s2.4, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 2 If the oil level of the pressure oil tank is not more than H b And stopping loading the pressure oil pump, judging whether the air compensating valve is not closed or the pressure oil tank oil level gauge fails, and sending an early warning signal to inform operators of on-site treatment.
Preferably, the P 1 6.1MPa, P 2 6.3Mpa.
Preferably, the step S3 specifically includes the following steps:
s3.1, set V g Is the bottom area of the pressure oil tank; v (V) u Is the bottom area of the oil return tank; h is a g The oil return box is provided with a high oil level alarm value; h is a d The low oil level warning value of the oil return box; h is a b Is the reference oil level of the oil return tank, and the value of the reference oil level is (h) g -h d )/2+h d ；
S3.2, after the hydraulic system of the speed regulator is put into operation, the oil temperature of the hydraulic system is adjusted to a set value T, and when a pressure oil pump is loaded, the oil level of the pressure oil tank is required to be adjusted to a target oil level H of the pressure oil tank b The method comprises the steps of carrying out a first treatment on the surface of the Under normal conditions, the oil level of the pressure oil tank is H as long as the oil of the hydraulic system is not leaked b When the corresponding oil level of the oil return tank is h b ；
S3.3, when the actual oil level h of the oil return tank is smaller than h b And the actual oil level H of the pressure oil tank and the target oil level H of the pressure oil tank b The difference of (2) satisfies the formula: (H) b -H)/H b When the oil leakage rate is more than or equal to 1%, judging that the oil leakage condition of the hydraulic system occurs, and simultaneouslyAnd sending out an early warning signal to inform an operator to immediately process.
The application has the beneficial effects that:
1. according to the application, the oil temperature of the hydraulic system is maintained at the optimal operation temperature through constant temperature control, the oil leakage condition of the hydraulic system caused by the deterioration of the sealing element is reduced from the source, the reliability of the action of the speed regulating system is improved, the sensitivity of the leakage monitoring of the hydraulic system is greatly improved through related calculation and the monitoring of the total oil quantity change speed of the hydraulic system, the phenomena that the oil level of the pressure oil tank is too high and the liquid level of the oil return tank is too low caused by oil leakage and gas leakage in the operation process of the hydraulic system can be effectively solved through control logic, and early warning signals are timely sent out.
2. When the hydraulic system is just started, the oil return tank is used for pumping oil and pressurizing the pressure oil tank through the oil pressing pump, the connection management between the oil return tank and the pressure oil tank before the oil pressing pump is started is in an empty pipe state, and the pressure of the pressure oil tank is also lower. Therefore, the oil level of the oil return tank can be reduced by a small extent after the hydraulic system is started; if the liquid level of the oil return tank is just near the alarm liquid level before starting, but not reaching the alarm value; when the hydraulic system is started, the liquid level of the oil return tank is low, and the starting condition of the unit is not met, so that each parameter is checked to be normal before the unit is started, and when the hydraulic system is started, an alarm is given, and the condition that the giant unit fails to start is caused; the application pre-warns the leakage condition of the pressure oil tank and pre-warns the leakage condition of the hydraulic system, in particular to the target oil level value (H) of the pressure oil tank g -H d )/2+H d And an oil return tank reference oil level value (h g -h d )/2+h d The situation of the start failure of the giant unit can not occur.
Drawings
FIG. 1 is a graph of trend of operational data of a governor hydraulic system prior to use of the method of the present application;
fig. 2 is a graph showing the trend of the operation data of the hydraulic system of the speed regulator after the method of the application is used.
Detailed Description
The application is described in further detail below with reference to the drawings and the specific examples.
An intelligent control and early warning method for a hydraulic system of a giant hydraulic turbine governor comprises the following steps:
s1, performing constant temperature control on the temperature of hydraulic oil in an oil return tank to maintain the temperature at a constant temperature T;
s2: early warning is carried out on the air leakage condition of the pressure oil tank;
s3: and (5) early warning is carried out on the oil leakage condition of the hydraulic system.
Preferably, the temperature constant T in S1 is 35 ℃.
Preferably, the specific thermostatic control method of S1 is as follows:
s1.1, if the temperature of the oil in the oil return tank is lower than 35 ℃, automatically starting a heater arranged at the bottom of the oil return tank; if the oil temperature in the oil return tank is higher than 35 ℃, stopping heating by the heater, and putting the cooler into operation for cooling;
s1.2, when the heater heats and the pressure oil pump does not operate, the micro circulating pump is started, and the micro circulation of the oil in the oil return tank is kept.
In this embodiment, a plurality of small heaters may be added at the bottom of the oil return tank, because the operation of the heaters is started when the temperature is lower than 35 ℃, that is, 34 ℃, according to the fixed value control (the starting temperature difference can be properly widened to avoid the occurrence of too frequent throwing and withdrawing of the heaters), only the oil needs to be slightly heated, so that the heater is not in the power of a single heater, and is mainly in small and large quantity, so as to realize accurate control of the temperature. In addition, the micro circulating pump is mainly used for keeping micro circulation of oil in the oil return tank when the heater is heated and the oil pump is not operated, so that accuracy of temperature measurement is guaranteed, and if the oil pump is operated, the micro circulating pump can drive the oil to circulate, and the micro circulating pump is not required to be started to drive the oil to circulate. In addition, four temperature sensors are arranged in the oil return tank, the average value of the temperature sensors is taken as an output value of the temperature of the oil return tank so as to control the start and stop of the heater and the start and stop of the cooler, and when one temperature sensor is obviously different from the other 3 temperatures (more than 4 ℃), the average value of the other three temperature sensors is taken as the value of oil temperature control, and meanwhile, a fault signal of the temperature sensor is sent. Finally, because the speed regulator and the hydraulic system device are both arranged in the factory building, and the central air conditioner is arranged in the factory building, the condition that the temperature of the oil return tank is higher than 35 ℃ when the machine set is stopped due to the fact that the temperature of the central air conditioner is too high in summer (when the machine set is stopped, the hydraulic system is in a stop state, no heat source is generated, no cooling water is generated, the cooler cannot work at the same time, and the temperature of the oil return tank is mainly influenced by the ambient temperature is avoided
The constant temperature control can keep the oil temperature of the hydraulic system of the speed regulator in an optimal state all the time, the reliability of the action of the speed regulator and the service life of the sealing element are greatly improved, and the leakage probability of the hydraulic system is essentially reduced.
Preferably, the step S2 specifically includes the following steps:
s2.1, set H g Is the high oil level alarm value of the pressure oil tank, H d The low oil level alarm value of the pressure oil tank; then H b Is a target oil level of the pressure tank, and has a value (H g -H d )/2+H d ；
S2.2, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 1 And the oil level in the pressure oil tank is more than or equal to H b When the pressure is applied, the pressure oil pump is stopped; at this time if the pressure does not reach P 2 Judging that the pressure oil tank has slight air leakage, sending out an early warning signal, and opening an air supplementing valve at the top of the pressure oil tank to supplement air until the pressure of the pressure oil tank is more than or equal to P 2 Stopping when the operation is stopped;
s2.3, when the pressure of the pressure oil tank is lower than P 1 When the oil level of the pressure oil tank is more than or equal to H, the pressure oil pump is started to load b If the pressure of the pressure oil tank is not greater than P 1 Judging that the pressure oil tank has serious air leakage, and continuously loading the pressure oil pump until the oil pressure is greater than P 1 Simultaneously, an early warning signal is sent out to inform an operator to immediately process;
s2.4, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 2 If the oil level of the pressure oil tank is not more than H b And stopping loading the pressure oil pump, judging whether the air compensating valve is not closed or the pressure oil tank oil level gauge fails, and sending an early warning signal to inform operators of on-site treatment.
Preferably, the P 1 6.1MPa, P 2 6.3Mpa.
Preferably, the step S3 specifically includes the following steps:
s3.1, set V g Is the bottom area of the pressure oil tank; v (V) u Is the bottom area of the oil return tank; h is a g The oil return box is provided with a high oil level alarm value; h is a d The low oil level warning value of the oil return box; h is a b Is the reference oil level of the oil return tank, and the value of the reference oil level is (h) g -h d )/2+h d ；
S3.2, after the hydraulic system of the speed regulator is put into operation, the oil temperature of the hydraulic system is adjusted to a set value T, and when a pressure oil pump is loaded, the oil level of the pressure oil tank is required to be adjusted to a target oil level H of the pressure oil tank b The method comprises the steps of carrying out a first treatment on the surface of the Under normal conditions, the oil level of the pressure oil tank is H as long as the oil of the hydraulic system is not leaked b When the corresponding oil level of the oil return tank is h b ；
S3.3, when the actual oil level h of the oil return tank is smaller than h b And the actual oil level H of the pressure oil tank and the target oil level H of the pressure oil tank b The difference of (2) satisfies the formula: (H) b -H)/H b And when the oil leakage of the hydraulic system is more than or equal to 1%, judging the oil leakage of the hydraulic system, and sending an early warning signal to inform operators to immediately process. The 1% of the liquid level gauge is selected to be about 20mm according to the actual oil level, and the error of a cell of the float type liquid level gauge is generally within 10mm, so that the liquid level gauge is sensitive to adopt 20mm as a liquid level alarm value, and can avoid normal errors.
In the technical scheme, the oil mass of the speed regulator and the hydraulic system is mainly concentrated in the oil return tank and the pressure oil tank; after the oil return box of the hydraulic system is controlled at a constant temperature, the influence of the oil temperature on the oil volume can be eliminated. In the operation process of the hydraulic system, the actual loading frequency is fast, and once a few minutes, the oil in the oil return tank can be quickly exchanged with the oil in the pressure oil tank. The oil temperature in the tank and the pressure tank are matched soon, so that the overall oil temperature can be regarded as a constant value T.
The beneficial effects of the method of the application are further illustrated by comparing the operational data of the governor hydraulic system before and after the use of the method of the application:
table 1 data of operation of governor hydraulic system in conventional method
Table 2 data of operation of the governor hydraulic system using the method of the present application
It can be seen from the above table that after the method of the present application is put into operation, when the pressure of the pressure tank is consistent, the oil level of the corresponding oil return tank and the oil level of the pressure tank are also consistent with each other, and compared with the conventional method, each operation data is more stable.
In addition, fig. 1 is a trend chart of running data of the hydraulic system of the speed regulator before the method of the application is used, fig. 2 is a trend chart of running data of the hydraulic system of the speed regulator after the method of the application is used, as can be seen more intuitively from fig. 2, the running data of the hydraulic system of the speed regulator corresponding to the method of the application is more stable, the variation amplitude is smaller, and the variation amplitude of the running data of the hydraulic system of the speed regulator corresponding to fig. 1 is larger; therefore, the operation data of the hydraulic system of the speed regulator becomes more stable after the intervention of the method.
The above embodiments are merely preferred embodiments of the present application, and should not be construed as limiting the present application, and the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without collision. The protection scope of the present application is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this application are also within the scope of the application.
Claims (6)
1. An intelligent control and early warning method for a hydraulic system of a giant hydraulic turbine governor is characterized by comprising the following steps of: it comprises the following steps:
s1, performing constant temperature control on the temperature of hydraulic oil in an oil return tank to maintain the temperature at a constant temperature T;
s2: early warning is carried out on the air leakage condition of the pressure oil tank;
s3: and (5) early warning is carried out on the oil leakage condition of the hydraulic system.
2. The intelligent control and early warning method for the hydraulic system of the giant hydraulic turbine governor according to claim 1 is characterized in that: the temperature fixed value T in the S1 is 35 ℃.
3. The intelligent control and early warning method for the hydraulic system of the giant hydraulic turbine governor according to claim 2, wherein the intelligent control and early warning method is characterized by comprising the following steps of: the specific constant temperature control method of the S1 is as follows:
s1.1, if the temperature of the oil in the oil return tank is lower than 35 ℃, automatically starting a heater arranged at the bottom of the oil return tank; if the oil temperature in the oil return tank is higher than 35 ℃, stopping heating by the heater, and putting the cooler into operation for cooling;
s1.2, when the heater heats and the pressure oil pump does not operate, the micro circulating pump is started, and the micro circulation of the oil in the oil return tank is kept.
4. The intelligent control and early warning method for the hydraulic system of the giant hydraulic turbine governor according to claim 1 is characterized in that: the step S2 specifically includes the following steps:
s2.1, set H g Is the high oil level alarm value of the pressure oil tank, H d The low oil level alarm value of the pressure oil tank; then H b Is a target oil level of the pressure tank, and has a value (H g -H d )/2+H d ；
S2.2, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 1 And the oil level in the pressure oil tank is more than or equal to H b When the oil pump is stoppedCarrying; at this time if the pressure does not reach P 2 Judging that the pressure oil tank has slight air leakage, sending out an early warning signal, and opening an air supplementing valve at the top of the pressure oil tank to supplement air until the pressure of the pressure oil tank is more than or equal to P 2 Stopping when the operation is stopped;
s2.3, when the pressure of the pressure oil tank is lower than P 1 When the oil level of the pressure oil tank is more than or equal to H, the pressure oil pump is started to load b If the pressure of the pressure oil tank is not greater than P 1 Judging that the pressure oil tank has serious air leakage, and continuously loading the pressure oil pump until the oil pressure is greater than P 1 Simultaneously, an early warning signal is sent out to inform an operator to immediately process;
s2.4, when the pressure of the pressure oil tank is lower than P 1 When the pressure of the pressure oil tank is higher than P, the pressure oil pump is started to load 2 If the oil level of the pressure oil tank is not more than H b And stopping loading the pressure oil pump, judging whether the air compensating valve is not closed or the pressure oil tank oil level gauge fails, and sending an early warning signal to inform operators of on-site treatment.
5. The intelligent control and early warning method for the hydraulic system of the giant hydraulic turbine governor according to claim 4, wherein the intelligent control and early warning method is characterized by comprising the following steps of: the P is 1 6.1MPa, P 2 6.3Mpa.
6. The intelligent control and early warning method for the hydraulic system of the giant hydraulic turbine governor according to claim 1 is characterized in that: the step S3 specifically includes the following steps:
s3.1, set V g Is the bottom area of the pressure oil tank; v (V) u Is the bottom area of the oil return tank; h is a g The oil return box is provided with a high oil level alarm value; h is a d The low oil level warning value of the oil return box; h is a b Is the reference oil level of the oil return tank, and the value of the reference oil level is (h) g -h d )/2+h d ；
S3.2, after the hydraulic system of the speed regulator is put into operation, the oil temperature of the hydraulic system is adjusted to a set value T, and when a pressure oil pump is loaded, the oil level of the pressure oil tank is required to be adjusted to a target oil level H of the pressure oil tank b The method comprises the steps of carrying out a first treatment on the surface of the Under normal conditions, the oil level of the pressure oil tank is as long as the oil of the hydraulic system is not leakedIs H b When the corresponding oil level of the oil return tank is h b ；
S3.3, when the actual oil level h of the oil return tank is smaller than h b And the actual oil level H of the pressure oil tank and the target oil level H of the pressure oil tank b The difference of (2) satisfies the formula: (H) b -H)/H b And when the oil leakage of the hydraulic system is more than or equal to 1%, judging the oil leakage of the hydraulic system, and sending an early warning signal to inform operators to immediately process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310698002.1A CN116906245A (en) | 2023-06-13 | 2023-06-13 | Intelligent control and early warning method for hydraulic system of giant hydraulic turbine governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310698002.1A CN116906245A (en) | 2023-06-13 | 2023-06-13 | Intelligent control and early warning method for hydraulic system of giant hydraulic turbine governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116906245A true CN116906245A (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310698002.1A Pending CN116906245A (en) | 2023-06-13 | 2023-06-13 | Intelligent control and early warning method for hydraulic system of giant hydraulic turbine governor |
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| Country | Link |
|---|---|
| CN (1) | CN116906245A (en) |
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2023
- 2023-06-13 CN CN202310698002.1A patent/CN116906245A/en active Pending
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