Method, device and equipment for monitoring running state of hydraulic turbine governor oil pressure device

Abstract

The invention provides a method, device and equipment for monitoring the running state of an oil pressure device of a water turbine governor, and the method comprises the steps: obtaining the running duration of an oil pump in each running period in a plurality of continuous running periods; the oil level difference of an oil pressing tank in each operation cycle is obtained; the valve element displacement of a valve element of the main distributing valve is obtained; based on the oil level difference of each operation cycle and the operation duration, the oil pump outlet flow of each operation cycle is obtained; and based on the oil pump operation duration, the oil level difference, the valve element displacement and the oil pump outlet flow, an oil pressure device is monitored. According to the technical scheme, the accuracy of operation monitoring of the hydraulic turbine governor oil pressure device can be improved.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic turbines, and particularly to a method, device, equipment and storage medium for monitoring the operating state of a hydraulic turbine governor oil pressure device. Background Art

[0002] In the related art, the operation monitoring of the hydraulic turbine governor oil pressure device mainly relies on manual statistics and qualitative analysis, lacking intelligent and real-time monitoring means. Therefore, it is impossible to give early warnings in time when abnormal situations such as equipment leakage or efficiency decline occur, resulting in delays in fault handling and increasing the risk of equipment damage. Moreover, the manual monitoring method is easily affected by subjective factors, and there may be errors in data recording and analysis, making it difficult to ensure the accuracy and reliability of the monitoring results. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems in the related art to some extent.

[0004] In a first aspect, this application proposes a method for monitoring the operating state of a hydraulic turbine governor oil pressure device, the method includes: obtaining the operating duration of the oil pump in each of multiple consecutive operating cycles; obtaining the oil level difference of the pressure oil tank in each of the operating cycles; obtaining the valve core displacement of the main distributor valve core; obtaining the oil pump outlet flow rate in each of the operating cycles based on the oil level difference and the operating duration in each of the operating cycles; monitoring the oil pressure device based on the operating duration of the oil pump, the oil level difference, the valve core displacement and the oil pump outlet flow rate.

[0005] In an implementation manner, the obtaining the operating duration of the oil pump in each of multiple consecutive operating cycles includes: obtaining the first starting current value and the first stopping current value of the governor pressure transmitter; obtaining the pump starting oil pressure based on the first starting current value and obtaining the pump stopping oil pressure based on the first stopping current value; obtaining the oil pressure change data of the pressure oil tank in each of the operating cycles; obtaining the operating duration of the oil pump in each of the operating cycles based on the pump starting oil pressure, the pump stopping oil pressure and the oil pressure change data in each of the operating cycles.

[0006] In an optionally implementation manner, the obtaining the pump starting oil pressure based on the first starting current value includes: obtaining the first standard current range of the governor pressure transmitter; obtaining a first intermediate variable value based on the first standard current range and the starting current value; obtaining the pump starting oil pressure based on the first intermediate variable value.

[0007] In one implementation, the obtaining of the oil level difference of the pressure oil tank in each of the operation cycles includes: obtaining the second starting current value and the second stopping current value of the oil level sensor of the oil return tank in each of the operation cycles; obtaining the second standard current range of the oil level sensor; obtaining the starting oil level in each of the operation cycles based on the second standard current range and the second starting current value in each of the operation cycles; obtaining the stopping oil level in each of the operation cycles based on the second standard current range and the second stopping current value in each of the operation cycles; and obtaining the oil level difference in each of the operation cycles based on the starting oil level and the stopping oil level in each of the operation cycles.

[0008] In one implementation, the obtaining of the spool displacement of the main distributor valve spool includes: obtaining the third current value of the spool displacement sensor of the main distributor valve; obtaining the spool displacement range and the third standard current range of the displacement sensor; obtaining a second intermediate variable value based on the third standard current range and the third current value; and obtaining the spool displacement based on the third intermediate variable value and the spool displacement range.

[0009] In one implementation, the monitoring of the oil pressure device based on the pump operation duration, the oil level difference, the spool displacement, and the pump outlet flow rate includes at least one of the following: determining that the pump operation is abnormal in response to the spool displacement being within a preset displacement range, the pump operation duration increasing, the oil level difference decreasing, and the pump outlet flow rate decreasing; or determining that there is a leakage in the oil return tank in response to the spool displacement being within a preset displacement range, the pump operation duration remaining unchanged, the oil level difference decreasing, and the pump outlet flow rate remaining unchanged.

[0010] In a second aspect, the present application provides an operating state monitoring device for a water turbine governor oil pressure device, the device including: a first processing module for obtaining the pump operation duration in each of a plurality of consecutive operation cycles; a second processing module for obtaining the oil level difference of the pressure oil tank in each of the operation cycles; a third processing module for obtaining the spool displacement of the main distributor valve spool; a fourth processing module for obtaining the pump outlet flow rate in each of the operation cycles based on the oil level difference and the operation duration in each of the operation cycles; and a monitoring module for monitoring the oil pressure device based on the pump operation duration, the oil level difference, the spool displacement, and the pump outlet flow rate.

[0011] In one implementation, the first processing module may be configured to: obtain a first start current value and a first stop current value of a governor pressure transmitter; obtain a pump start oil pressure based on the first start current value, and obtain a pump stop oil pressure based on the first stop current value; obtain oil pressure change data of the pressure oil tank in each operating cycle; and obtain the operating duration of the oil pump in each operating cycle based on the pump start oil pressure, the pump stop oil pressure, and the oil pressure change data in each operating cycle.

[0012] In an alternative implementation, the first processing module may be configured to: obtain a first standard current range of the governor pressure transmitter; obtain a first intermediate variable value based on the first standard current range and the start current value; and obtain the pump start oil pressure based on the first intermediate variable value.

[0013] In one implementation, the second processing module may be configured to: obtain a second start current value and a second stop current value of a return oil tank level sensor in each operating cycle; obtain a second standard current range of the level sensor; obtain a start oil level in each operating cycle based on the second standard current range and the second start current value in each operating cycle; obtain a stop oil level in each operating cycle based on the second standard current range and the second stop current value in each operating cycle; and obtain an oil level difference in each operating cycle based on the start oil level and the stop oil level in each operating cycle.

[0014] In one implementation, the third processing module may be configured to: obtain a third current value of a main distribution valve spool displacement sensor; obtain a spool displacement range and a third standard current range of the displacement sensor; obtain a second intermediate variable value based on the third standard current range and the third current value; and obtain the spool displacement based on the second intermediate variable value and the displacement range.

[0015] In one implementation, the monitoring module may be configured to: determine that the oil pump is operating abnormally in response to the spool displacement being within a preset displacement range, the operating duration of the oil pump increasing, the oil level difference decreasing, and the oil pump outlet flow rate decreasing; or determine that there is a leak in the return oil tank in response to the spool displacement being within a preset displacement range, the operating duration of the oil pump remaining unchanged, the oil level difference decreasing, and the oil pump outlet flow rate remaining unchanged.

[0016] In a third aspect, the present application provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute the method for monitoring the operating state of a hydraulic turbine governor oil pressure device as described in the first aspect.

[0017] In a fourth aspect, the present application provides a computer-readable storage medium for storing instructions that, when executed, implement the method described in the first aspect.

[0018] In a fifth aspect, the present application provides a computer program product including a computer program that, when executed by a processor, implements the steps of the method for monitoring the operating state of a hydraulic turbine governor oil pressure device described in the first aspect.

[0019] The method, device, equipment, and storage medium for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by the present application can monitor the operating state of the hydraulic turbine governor oil pressure device based on the oil pump operation duration, oil level difference, and oil pump outlet flow rate in each of multiple consecutive operating cycles obtained, in combination with the valve core displacement of the main distribution valve core, thereby improving the accuracy of monitoring the operation of the hydraulic turbine governor oil pressure device.

[0020] Additional aspects and advantages of the present application will be partially given in the following description, will become apparent from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the following description of the embodiments in conjunction with the drawings, where:

[0022] Figure 1 is a schematic flow chart of a method for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application;

[0023] Figure 2 is a schematic flow chart of another method for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application;

[0024] Figure 3 is a schematic flow chart of yet another method for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application;

[0025] Figure 4 is a schematic flow chart of yet another method for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application;

[0026] Figure 5 is a schematic structural diagram of a device for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application;

[0027] Figure 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed Embodiments

[0028] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0029] The following describes a method and device for monitoring the operating state of a hydraulic turbine governor oil pressure device according to an embodiment of the present application with reference to the accompanying drawings.

[0030] Figure 1 It is a schematic flow chart of a method for monitoring the operating state of a hydraulic turbine governor oil pressure device provided by an embodiment of the present application. As Figure 1 shown, the method may include but is not limited to the following steps:

[0031] Step S101: Obtain the operating duration of the oil pump in each of multiple consecutive operating cycles.

[0032] Exemplarily, taking the most recent operating cycle as the last operating cycle, obtain the operating duration of the oil pump in each of multiple consecutive operating cycles of the hydraulic turbine governor oil pressure device.

[0033] Step S102: Obtain the oil level difference of the pressure oil tank in each operating cycle.

[0034] Exemplarily, obtain the oil level difference of the pressure oil tank in each operating cycle through an oil level sensor provided in the pressure oil tank.

[0035] Step S103: Obtain the valve core displacement of the main distribution valve core.

[0036] Exemplarily, obtain the valve core displacement of the main distribution valve core through a main distribution valve core displacement sensor.

[0037] Step S104: Based on the oil level difference and operating duration in each operating cycle, obtain the oil pump outlet flow rate in each operating cycle.

[0038] Exemplarily, obtain the amount of oil flowing out of the pressure oil tank based on the oil level difference in each operating cycle, and then obtain the oil pump outlet oil amount in each operating cycle according to the oil amount and operating duration in each operating cycle.

[0039] Step S105: Monitor the oil pressure device based on the operating duration of the oil pump, the oil level difference, the valve core displacement, and the oil pump outlet flow rate.

[0040] Exemplarily, determine that at least one of the operating duration of the oil pump, the oil level difference, and the oil pump outlet flow rate changes, and / or the valve core displacement is not within the normal range, and determine that the operation of the oil pressure device is abnormal.

[0041] In one implementation manner, the above monitoring of the oil pressure device based on the operation duration of the oil pump, the oil level difference, the spool displacement, and the oil pump outlet flow rate includes at least one of the following: determining that the oil pump is operating abnormally in response to the spool displacement being within a preset displacement range, the operation duration of the oil pump increasing, the oil level difference decreasing, and the oil pump outlet flow rate decreasing; or determining that there is a leakage in the oil return tank in response to the spool displacement being within a preset displacement range, the operation duration of the oil pump remaining unchanged, the oil level difference decreasing, and the oil pump outlet flow rate remaining unchanged.

[0042] It can be understood that since the volumes of the oil return tank and the pressure oil tank are fixed, and the starting pump pressure and the stopping pump pressure are fixed values, the amount of oil transported by the oil pump, the amount of oil reduced in the oil return tank, and the amount of oil increased in the pressure oil tank are the same each time during the process from starting the pump to stopping the pump. When the oil delivery amount is the same, if the efficiency of the oil pump gradually decreases, the time required for each start-stop process of the oil pump becomes longer, that is, the operation duration increases.

[0043] It can be understood that since the volume and the bottom area of the oil return tank are fixed, the change in the oil level in the oil return tank has a linear relationship with the change in the oil quantity. During the same operation time, if the efficiency of the oil pump decreases, the change amount of the oil level in the oil return tank also decreases accordingly.

[0044] It can be understood that when the oil delivery amount of the oil pump is the same, the change amount of the oil level in the oil return tank is the same. If the efficiency of the oil pump decreases, the oil pump outlet flow rate decreases accordingly.

[0045] By implementing the embodiments of the present application, the operation state of the oil pressure device of the water turbine governor can be monitored based on the operation duration of the oil pump, the oil level difference, and the oil pump outlet flow rate in each of multiple consecutive operation cycles obtained, in combination with the spool displacement of the main distribution valve spool. The accuracy of the operation monitoring of the oil pressure device of the water turbine governor is improved.

[0046] In some embodiments, the oil pressure range of the pressure oil tank when the oil pump is working can be obtained based on the working current of the governor pressure transmitter, so as to determine the operation duration of the oil pump in each operation cycle according to this oil pressure range. As an example, please refer to Figure 2 , Figure 2 is a schematic flow chart of another method for monitoring the operation state of the oil pressure device of the water turbine governor provided by the embodiments of the present application. As shown in Figure 2 shown, this method may include but is not limited to the following steps:

[0047] Step S201: Obtain the first start current value and the first stop current value of the governor pressure transmitter.

[0048] Exemplarily, obtain the first start current value when the governor pressure transmitter starts to operate and the second stop current value when it stops operating.

[0049] Step S202: Obtain the pump starting oil pressure based on the first starting current value, and obtain the pump stopping oil pressure based on the first stopping current value.

[0050] In one implementation, the obtaining of the pump starting oil pressure based on the first starting current value may include the following steps:

[0051] Step A1: Obtain the first standard current range of the governor pressure transmitter.

[0052] Step A2: Obtain the first intermediate variable value based on the first standard current range and the starting current value.

[0053] Exemplarily, the first standard current range is 4 - 20 mA.

[0054] Exemplarily, the calculation formula of the first intermediate variable value can be expressed as follows:

[0055] α = [(αmax - αmin)·(Ig1 - 4) / (20 - 4)] + αmin

[0056] Where, α is the first intermediate variable value, Ig1 is the first starting current value, and αmax and αmin are the intermediate variable ranges calibrated based on the first standard current range.

[0057] Step A3: Obtain the pump starting oil pressure based on the first intermediate variable value.

[0058] Exemplarily, the calculation formula of the pump starting oil pressure can be expressed as follows:

[0059] P = [(Pmax - Pmin)·(α - αmin) / (αmax - αmin)] + Pmin

[0060] Where, P is the pump starting oil pressure, Pmax is the maximum oil pressure of the pressure oil tank, Pmin is the minimum oil pressure of the pressure oil tank, and α is the first intermediate variable value.

[0061] As an example, taking αmin = 2000, αmax = 10000, Pmin = 0, and Pmax = 10 MPa as an example, the first intermediate variable value is:

[0062] α = [(10000 - 2000)·(12 - 4) / (20 - 4)] + 2000 = 6000

[0063] The pump starting oil pressure is:

[0064] P1 = [(10 - 0)·(6000 - 2000) / (10000 - 2000)] + 0 = 5 MPa

[0065] It should be noted that in the embodiments of the present application, the calculation method of the pump-stop oil pressure can be the same as that of the pump-start oil pressure, and the present application will not elaborate on this here.

[0066] Step S203: Obtain the oil pressure change data of the pressure oil tank in each operation cycle.

[0067] Exemplarily, the oil pressure change data of the pressure oil tank in each operation cycle is obtained through an oil pressure sensor provided on the pressure oil tank.

[0068] Step S204: Based on the pump-start oil pressure, pump-stop oil pressure, and oil pressure change data in each operation cycle, obtain the operation duration of the oil pump in each operation cycle.

[0069] Exemplarily, based on the oil pressure change data in each operation cycle, obtain the time t1 when the oil pressure of the pressure oil tank drops to the pump-start oil pressure, and the time t2 when the oil pressure of the pressure oil tank rises to the pump-stop oil pressure. Then, the operation duration t of the oil pump in this operation cycle is t = t2 - t1.

[0070] Step S205: Obtain the oil level difference of the pressure oil tank in each operation cycle.

[0071] In the embodiments of the present application, step S205 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate on it either.

[0072] Step S206: Obtain the valve core displacement of the main distributor valve core.

[0073] In the embodiments of the present application, step S206 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate on it either.

[0074] Step S207: Based on the oil level difference and operation duration in each operation cycle, obtain the oil pump outlet flow rate in each operation cycle.

[0075] In the embodiments of the present application, step S207 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate on it either.

[0076] Step S208: Monitor the oil pressure device based on the operation duration of the oil pump, oil level difference, valve core displacement, and oil pump outlet flow rate.

[0077] In the embodiments of the present application, step S208 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate on it either.

[0078] By implementing the embodiments of the present application, based on the starting current value and the stopping current value of the governor pressure transmitter, the pump oil pressure and the pump stopping oil pressure can be obtained, so as to obtain the running duration of the oil pump in each operating cycle based on the oil pressure change data in each operating cycle, and based on the running duration of the oil pump, the oil level difference and the oil pump outlet flow in each operating cycle, combined with the valve core displacement of the main distribution valve core, the operating state of the hydraulic pressure device of the water turbine governor can be monitored. The accuracy of the operation monitoring of the hydraulic pressure device of the water turbine governor can be improved.

[0079] In some embodiments, based on the current signal of the oil tank oil level sensor, the oil level difference of the pressure oil tank can be obtained. As an example, please refer to Figure 3 , Figure 3 which is a schematic flow chart of another method for monitoring the operating state of the hydraulic pressure device of the water turbine governor provided by the embodiments of the present application. As shown in Figure 3 shown, the method may include but is not limited to the following steps:

[0080] Step S301: Obtain the running duration of the oil pump in each of multiple consecutive operating cycles.

[0081] In the embodiments of the present application, step S301 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not make any limitations in this regard and will not be elaborated further.

[0082] Step S302: Obtain the second starting current value and the second stopping current value of the return oil tank oil level sensor in each operating cycle.

[0083] Exemplarily, obtain the second starting current value and the second stopping current value of the return oil tank oil level sensor at the initial moment and the end moment of each operating cycle.

[0084] Step S303: Obtain the second standard current range of the oil level sensor.

[0085] Exemplarily, the above second standard current range can be 4 - 20 mA.

[0086] Step S304: Based on the second standard current range and the second starting current value of each operating cycle, obtain the starting oil level of each operating cycle.

[0087] Exemplarily, based on the second standard current range and the second starting current value of each operating cycle, obtain the intermediate variable value of each operating cycle, and based on the measurement range of the oil level sensor and the intermediate variable value of each operating cycle, obtain the starting oil level of each operating cycle.

[0088] Exemplarily, the calculation formula of the intermediate variable value can be expressed as follows:

[0089] θ = [(θmax - θmin)·(Ir2 - 4) / (20 - 4)] + θmin

[0090] Wherein, θ is the intermediate variable value, Ir2 is the second starting current value, and θmax and θmin are the maximum and minimum values of the second standard current range.

[0091] Exemplarily, the calculation formula for the starting oil level can be expressed as follows:

[0092] h = [(hmax - hmin)·(θ - θmin) / (θmax - θmin)] + hmin

[0093] Wherein, h is the starting oil level, and hmax and hmin are the maximum and minimum values of the measurement range of the oil level sensor.

[0094] As an example, taking θmin = 2000, θmax = 10000, the second starting current value Ir2 = 12 mA, hmin = 0, and hmax = 8000 mm as an example, the intermediate variable value is:

[0095] θ1 = [(10000 - 2000)·(12 - 4) / (20 - 4)] + 2000 = 6000

[0096] The starting oil level is:

[0097] h1 = [(8000 - 0)·(6000 - 2000) / (10000 - 2000)] + 0 = 4000 mm

[0098] Step S305: Based on the second standard current range and the second stopping current value of each operation cycle, obtain the stopping oil level of each operation cycle.

[0099] Wherein, in the embodiments of the present application, the calculation method of the stopping oil level can be the same as that of the starting oil level, and the present application will not elaborate herein.

[0100] As an example, taking θmin = 2000, θmax = 10000, the second stopping current value Ir3 = 8 mA, hmin = 0, and hmax = 8000 mm as an example, the intermediate variable value is:

[0101] θ2 = [(10000 - 2000)·(8 - 4) / (20 - 4)] + 2000 = 4000

[0102] The starting oil level is:

[0103] h2 = [(8000 - 0)·(4000 - 2000) / (10000 - 2000)] + 0 = 2000 mm

[0104] Step S306: Obtain the oil level difference for each operating cycle based on the starting oil level and the stopping oil level of each operating cycle.

[0105] Exemplarily, subtract the stopping oil level from the starting oil level of each operating cycle to obtain the oil level difference for each operating cycle.

[0106] Step S307: Obtain the valve core displacement of the main distributor valve core.

[0107] In the embodiments of the present application, step S307 can be implemented in any one of the various embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0108] Step S308: Obtain the oil pump outlet flow rate for each operating cycle based on the oil level difference and the operating duration of each operating cycle.

[0109] In the embodiments of the present application, step S308 can be implemented in any one of the various embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0110] Step S309: Monitor the oil pressure device based on the oil pump operating duration, the oil level difference, the valve core displacement, and the oil pump outlet flow rate.

[0111] In the embodiments of the present application, step S309 can be implemented in any one of the various embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0112] By implementing the embodiments of the present application, based on the starting current value and the stopping current value of the fuel tank oil level sensor in each operating cycle, the starting oil level and the stopping oil level of each operating cycle can be obtained, and then the oil level difference of each operating cycle can be obtained. Thus, in combination with the oil pump operating duration of each operating cycle, the oil pump outlet flow rate of each operating cycle, and the valve core displacement, the oil pressure device can be monitored. This can improve the accuracy of the operation monitoring of the oil pressure device of the hydraulic turbine governor.

[0113] In some embodiments, the valve core displacement of the main distributor valve core can be obtained based on the current signal output by the main distributor valve core displacement sensor. As an example, please refer to Figure 4 , Figure 4 is a schematic flow chart of another method for monitoring the operating state of the oil pressure device of the hydraulic turbine governor provided by the embodiments of the present application. As shown in Figure 4 shown, the method can include but is not limited to the following steps:

[0114] Step S401: Obtain the oil pump operating duration of each operating cycle in multiple consecutive operating cycles.

[0115] In the embodiments of the present application, step S401 can be implemented in any of the ways in the various embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0116] Step S402: Obtain the oil level difference of the pressure oil tank in each operation cycle.

[0117] In the embodiments of the present application, step S402 can be implemented in any of the ways in the various embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0118] Step S403: Obtain the third current value of the main distributor valve spool displacement sensor.

[0119] Exemplarily, obtain the third current value of the main distributor valve spool displacement sensor at the current moment.

[0120] Step S404: Obtain the spool displacement range and the third standard current range of the displacement sensor.

[0121] Exemplarily, the above third standard current range can be 4 - 20 mA.

[0122] Step S405: Obtain the second intermediate variable value based on the third standard current range and the third current value.

[0123] Exemplarily, the calculation formula of the second intermediate variable value can be expressed as follows:

[0124] β = [(βmax - βmin)·(Is - 4) / (20 - 4)] + βmin

[0125] Where β is the second intermediate variable value, βmax and βmin are the intermediate variables calibrated based on the third standard current range, and Is is the third current value.

[0126] Step S406: Obtain the spool displacement based on the second intermediate variable value and the displacement range.

[0127] Exemplarily, the calculation formula of the spool displacement can be shown as follows:

[0128] S = [(Smax - Smin)·(β - βmin) / (βmax - βmin)] + Smin

[0129] Where S is the spool displacement, Smax is the maximum value of the spool displacement range, and Smin is the minimum value of the spool displacement range.

[0130] As an example, taking βmin = 2000, βmax = 10000, Is = 12 mA, Smin = 0, and Smax = 60 mm as an example, the second intermediate variable value is:

[0131] β = [(10000 - 2000)·(12 - 4) / (20 - 4)] + 2000 = 6000

[0132] The spool displacement is as follows:

[0133] S = [(60 - 0)·(6000 - 2000) / (10000 - 2000)] + 0 = 30mm

[0134] Step S407: Based on the oil level difference and operation duration of each operation cycle, obtain the oil pump outlet flow rate of each operation cycle.

[0135] In the embodiments of the present application, step S407 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0136] Step S408: Monitor the oil pressure device based on the oil pump operation duration, oil level difference, spool displacement, and oil pump outlet flow rate.

[0137] In the embodiments of the present application, step S408 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not limit this and will not elaborate further.

[0138] By implementing the embodiments of the present application, the spool displacement can be obtained based on the current value of the spool displacement sensor of the main distributor valve, and the oil pressure device can be monitored in combination with the oil pump operation duration of each operation cycle, the oil pump outlet flow rate of each operation cycle, and the oil level difference of each operation cycle. It can improve the accuracy of the operation monitoring of the oil pressure device of the water turbine governor.

[0139] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a device for monitoring the operation state of an oil pressure device of a water turbine governor provided by the embodiments of the present application. As Figure 5 shown, the device 500 includes: a first processing module 501 for obtaining the oil pump operation duration of each operation cycle in multiple consecutive operation cycles; a second processing module 502 for obtaining the oil level difference of the pressure oil tank in each operation cycle; a third processing module 503 for obtaining the spool displacement of the main distributor valve spool; a fourth processing module 504 for obtaining the oil pump outlet flow rate of each operation cycle based on the oil level difference and operation duration of each operation cycle; and a monitoring module 505 for monitoring the oil pressure device based on the oil pump operation duration, oil level difference, spool displacement, and oil pump outlet flow rate.

[0140] In one implementation, the first processing module 501 can be used to: obtain the first starting current value and the first stopping current value of the governor pressure transmitter; obtain the pump starting oil pressure based on the first starting current value, and obtain the pump stopping oil pressure based on the first stopping current value; obtain the oil pressure change data of the pressure oil tank in each operation cycle; and obtain the running duration of the oil pump in each operation cycle based on the pump starting oil pressure, the pump stopping oil pressure, and the oil pressure change data in each operation cycle.

[0141] In an optional implementation, the first processing module 501 can be used to: obtain the first standard current range of the governor pressure transmitter; obtain a first intermediate variable value based on the first standard current range and the starting current value; and obtain the pump starting oil pressure based on the first intermediate variable value.

[0142] In one implementation, the second processing module 502 can be used to: obtain the second starting current value and the second stopping current value of the oil return tank oil level sensor in each operation cycle; obtain the second standard current range of the oil level sensor; obtain the starting oil level in each operation cycle based on the second standard current range and the second starting current value in each operation cycle; obtain the stopping oil level in each operation cycle based on the second standard current range and the second stopping current value in each operation cycle; and obtain the oil level difference in each operation cycle based on the starting oil level and the stopping oil level in each operation cycle.

[0143] In one implementation, the third processing module 503 can be used to: obtain the third current value of the main distribution valve spool displacement sensor; obtain the spool displacement range and the third standard current range of the displacement sensor; obtain a second intermediate variable value based on the third standard current range and the third current value; and obtain the spool displacement based on the second intermediate variable value and the displacement range.

[0144] In one implementation, the monitoring module 505 can be used to: determine that the oil pump is operating abnormally in response to the spool displacement being within a preset displacement range, the running duration of the oil pump increasing, the oil level difference decreasing, and the oil pump outlet flow rate decreasing; or determine that there is a leak in the oil return tank in response to the spool displacement being within a preset displacement range, the running duration of the oil pump remaining unchanged, the oil level difference decreasing, and the oil pump outlet flow rate remaining unchanged.

[0145] Through the device of the embodiments of the present application, it is possible to monitor the operating state of the hydraulic pressure device of the turbine governor based on the running duration of the oil pump, the oil level difference, and the oil pump outlet flow rate in each of multiple consecutive operation cycles obtained, in combination with the spool displacement of the main distribution valve spool. The accuracy of the operation monitoring of the hydraulic pressure device of the turbine governor is improved.

[0146] It should be noted that the foregoing explanation of the embodiments of the method for monitoring the operating state of the hydraulic pressure device of the turbine governor also applies to the device for monitoring the operating state of the hydraulic pressure device of the turbine governor in this embodiment, and will not be elaborated here.

[0147] To implement the above embodiments, the present application also provides an electronic device. Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of the electronic device provided by the embodiments of the present application. As Figure 6 shown, the electronic device 600 includes: a processor 601, and a memory 602 communicatively connected to the processor 601; the memory 602 stores computer-executable instructions; the processor 601 executes the computer-executable instructions stored in the memory to implement the method provided by the foregoing embodiments.

[0148] To implement the above embodiments, the present application also provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the method provided by the foregoing embodiments when executed by a processor.

[0149] To implement the above embodiments, the present application also provides a computer program product including a computer program, which implements the method provided by the foregoing embodiments when executed by a processor.

[0150] Wherein, in the description of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; herein, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0151] In the description of the foregoing embodiments, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0152] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0153] Any process or method description depicted in the flowchart or otherwise described herein may be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of this application includes additional implementations where functions may be executed in a substantially simultaneous manner or in the reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of this application pertain.

[0154] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered a sequenced list of executable instructions for implementing a logical function, and may be embodied specifically in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, as the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0155] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one of the following techniques known in the art or a combination thereof can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), and the like.

[0156] Those of ordinary skill in the art can understand that all or part of the steps carried out in implementing the above-described embodiment methods can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0157] In addition, in each of the embodiments of the present application, the functional units can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above-mentioned integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0158] The above-mentioned storage medium can be a read-only memory, a magnetic disk or an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A method for monitoring the operating state of a hydraulic turbine governor oil pressure device, characterized in that, Including: Obtaining the operating duration of the oil pump in each of multiple consecutive operating cycles; Obtaining the oil level difference of the pressure oil tank in each of the operating cycles; Obtaining the valve core displacement of the main distributor valve core; Based on the oil level difference and the operating duration in each of the operating cycles, obtaining the oil pump outlet flow rate in each of the operating cycles; Monitoring the oil pressure device based on the operating duration of the oil pump, the oil level difference, the valve core displacement, and the oil pump outlet flow rate.

2. The method according to claim 1, wherein The obtaining the operating duration of the oil pump in each of multiple consecutive operating cycles includes: Obtaining the first start current value and the first stop current value of the governor pressure transmitter; Obtaining the pump starting oil pressure based on the first start current value and obtaining the pump stopping oil pressure based on the first stop current value; Obtaining the oil pressure change data of the pressure oil tank in each of the operating cycles; Based on the pump starting oil pressure, the pump stopping oil pressure, and the oil pressure change data in each of the operating cycles, obtaining the operating duration of the oil pump in each of the operating cycles.

3. The method according to claim 2, characterized in that, The obtaining the pump starting oil pressure based on the first start current value includes: Obtaining the first standard current range of the governor pressure transmitter; Obtaining a first intermediate variable value based on the first standard current range and the start current value; Obtaining the pump starting oil pressure based on the first intermediate variable value.

4. The method according to claim 1, wherein The obtaining the oil level difference of the pressure oil tank in each of the operating cycles includes: Obtaining the second start current value and the second stop current value of the return oil tank oil level sensor in each of the operating cycles; Obtaining the second standard current range of the oil level sensor; Based on the second standard current range and the second start current value in each of the operating cycles, obtaining the start oil level in each of the operating cycles; Based on the second standard current range and the second stop current value in each of the operating cycles, obtaining the stop oil level in each of the operating cycles; Based on the start oil level and the stop oil level in each of the operating cycles, obtaining the oil level difference in each of the operating cycles.

5. The method according to claim 1, wherein The obtaining the valve core displacement of the main distributor valve core includes: Obtaining the third current value of the main distributor valve core displacement sensor; Obtaining the valve core displacement range and the third standard current range of the displacement sensor; Obtaining a second intermediate variable value based on the third standard current range and the third current value; Based on the third intermediate variable value and the displacement range, obtaining the valve core displacement.

6. The method according to claim 1, wherein The monitoring the oil pressure device based on the operating duration of the oil pump, the oil level difference, the valve core displacement, and the oil pump outlet flow rate includes: In response to the valve core displacement being within a preset displacement range, the operating duration of the oil pump increasing, the oil level difference decreasing, and the oil pump outlet flow rate decreasing, determining that the oil pump is operating abnormally; or, In response to the valve core displacement being within a preset displacement range, the operating duration of the oil pump remaining unchanged, the oil level difference decreasing, and the oil pump outlet flow rate remaining unchanged, determining that there is a leak in the return oil tank.

7. A monitoring device for the operating state of a hydraulic turbine governor oil pressure device, characterized in that, Including: A first processing module for obtaining the operating duration of the oil pump in each of multiple consecutive operating cycles; A second processing module for obtaining the oil level difference of the pressure oil tank in each of the operating cycles; A third processing module for obtaining the valve core displacement of the main distributor valve core; A fourth processing module, configured to obtain the oil pump outlet flow rate of each operation cycle based on the oil level difference and the operation duration of each operation cycle; A monitoring module, configured to monitor the oil pressure device based on the oil pump operation duration, the oil level difference, the spool displacement, and the oil pump outlet flow rate.

8. An electronic device, characterized in that, Comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that, Comprising a computer program, which when executed by a processor implements the method according to any one of claims 1 to 6.

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