A method and system for monitoring sediment in a pump-turbine

Abstract

The application provides a water pump water turbine silt monitoring method and system, a sampling inlet is arranged on a flow part of a water pump water turbine, a water inlet pipe is connected with the sampling inlet, a sampling water pipe can be connected with the water inlet pipe, a water inlet side control valve is arranged on the water inlet pipe, the water inlet side control valve is used for opening or disconnecting the connection between the water inlet pipe and the sampling water pipe, a silt monitoring device is used for monitoring silt data in water flowing through the silt monitoring device, obtaining sampling silt data, a water outlet pipe is used for discharging the sampling water flow through a water outlet, and a monitoring host is used for obtaining and displaying real-time silt monitoring data of water flowing through the water pump water turbine based on at least the sampling silt data; the water pump water turbine silt monitoring system of the application basically does not need manual intervention in the whole process from sampling water flow, silt data collection to discharging the sampling water flow, and can realize automatic real-time and accurate monitoring of silt data of water flowing through the water pump water turbine.

Description

Technical Field

[0001] This invention relates to the field of water pump and turbine technology, and more specifically, to a method and system for monitoring sediment in water pumps and turbines. Background Technology

[0002] In pumped storage power stations, monitoring the sediment data (such as sediment content and sediment particle size) of the water flowing through the pump turbine is crucial, as the data is of great significance for the operation and maintenance of the flow components and the management of water resources.

[0003] In related technologies, the sediment data of the water flow through a water pump turbine is usually measured by manual sampling and analysis methods such as drying and filtration. However, this method requires manual intervention for sampling and analysis and has obvious time lag, which cannot accurately reflect the real-time changes in sediment in the water flow within the water pump turbine structure. Summary of the Invention

[0004] The problem addressed by this invention is how to achieve automated real-time monitoring of sediment data in the water flow through a water pump turbine.

[0005] To address the aforementioned problems, this invention provides a method and system for monitoring sediment in water pump turbines.

[0006] In a first aspect, the present invention provides a water pump turbine sediment monitoring system, comprising:

[0007] The sampling inlet and the inlet pipe are provided. The sampling inlet is installed on the flow-through component of the water pump turbine, and the inlet pipe is connected to the sampling inlet.

[0008] The sampling water pipe can be connected to the inlet water pipe;

[0009] An inlet-side control valve is installed on the inlet pipe to open or disconnect the connection between the inlet pipe and the sampling water pipe.

[0010] A sediment monitoring device is connected to the sampling water pipe and is used to monitor the sediment data in the water flowing through the sediment monitoring device to obtain the sampled sediment data.

[0011] The water outlet pipe is connected to the sediment monitoring device, and the water outlet pipe is used to discharge the water flowing through the sediment monitoring device through the water outlet.

[0012] The monitoring host is used to acquire the sampled sediment data output by the sediment monitoring device, and to obtain and display real-time sediment monitoring data of the water flow through the pump turbine based at least on the sampled sediment data.

[0013] Optionally, a first flow detection device is provided on the water outlet pipe to detect the flow rate of the water in the water outlet pipe and obtain the sampled water flow rate.

[0014] The process of obtaining and displaying real-time sediment monitoring data of the water flow through the pump turbine, based at least on the sampled sediment data, includes:

[0015] Obtain the flow rate of the water passing through the water pump turbine;

[0016] Based on the sampled sediment data, the sampled water flow rate, and the flow rate of the water pump turbine, the real-time sediment monitoring data of the water pump turbine flow rate is determined.

[0017] Optionally, an adjustable flow valve and a pressure detection device are sequentially installed on the sampling water pipe before the sediment monitoring device, according to the direction of water flow; the adjustable flow valve is used to adjust the flow rate of the water in the sampling water pipe; the pressure detection device is used to detect the pressure of the water in the sampling water pipe; and / or,

[0018] A check valve and an outlet-side control valve are sequentially installed on the outlet pipe according to the direction of water flow; the check valve is used to prevent the water in the outlet pipe from flowing back; the outlet-side control valve is used to open or close the connection between the outlet pipe and the outlet.

[0019] Optionally, it also includes:

[0020] The calibration water pipe is able to connect to the sampling water pipe;

[0021] A calibration-side control valve is installed on the calibration water pipe to open or disconnect the connection between the sampling water pipe and the calibration water pipe.

[0022] A calibration sampling port is used to discharge the water flow in the calibration water pipe so that the sediment data in the water flow in the calibration water pipe can be manually analyzed.

[0023] The calibration water pipe is equipped with a second flow detection device and a pressure reducing valve. The second flow detection device is used to detect the flow rate of the water in the calibration water pipe to obtain the calibration water flow rate. The pressure reducing valve is used to reduce the pressure of the water in the calibration water pipe.

[0024] The monitoring host is also used for:

[0025] Receive sediment data in the water flow in the calibration water pipe, obtained from user input based on the water flow and the calibration water flow rate;

[0026] The sediment data in the water flow in the calibration water pipe at the same time and the sampled sediment data output by the sediment monitoring device are compared to obtain the comparison results.

[0027] Based on the comparison results, the calibration data of the sediment monitoring device is determined so as to perform real-time calibration of the sampled sediment data output by the sediment monitoring device.

[0028] Optionally, the sampling inlet is located on any one of the elbow section of the tailrace of the water pump turbine, the diffuser section of the tailrace, the volute, or the extension section of the ball valve pressure steel pipe.

[0029] Optionally, the sediment monitoring device includes a laser particle size analyzer.

[0030] Optionally, the sediment monitoring data in the water flow through the pump turbine includes at least sediment particle size data and sediment content data; the sediment particle size data includes at least: sediment particle size distribution, median sediment particle size, average sediment particle size, maximum sediment particle size, and sediment particle size distribution curve; the sediment content data includes at least: real-time sediment content, average sediment content, and maximum sediment content; the monitoring host is also used for:

[0031] Based on the median particle size and real-time sediment content in the water flow through the pump-turbine, the wear prediction results of the sediment in the water flow on the flow components of the pump-turbine are obtained and displayed, and an alarm is triggered when the wear prediction results exceed a threshold.

[0032] Optionally, the step of obtaining and displaying the wear prediction results of the flow-through components of the pump-turbine based on the median particle size and real-time sediment content in the flow-through water of the pump-turbine includes:

[0033] The median particle size and real-time sediment content in the water flow of the pump-turbine are input into the sediment wear prediction model of the pump-turbine. The sediment wear prediction model of the pump-turbine outputs the wear prediction results of the corresponding flow components of the pump-turbine.

[0034] Optionally, the monitoring host is also used for:

[0035] Based on real-time sediment monitoring data in the flow of water through the pump-turbine at different times, historical sediment monitoring data and the changing trends of historical sediment monitoring data in the flow of water through the pump-turbine are obtained and displayed; and / or,

[0036] The water flow data in each pipeline of the water pump turbine sediment monitoring system is monitored, and an alarm is triggered when an abnormality is detected.

[0037] Secondly, the present invention provides a method for monitoring sediment in a water pump turbine, applied to a water pump turbine sediment monitoring system. The water pump turbine sediment monitoring system includes: a sampling inlet, an inlet pipe, a sampling water pipe, an inlet-side control valve, a sediment monitoring device, an outlet pipe, and an outlet. The sampling inlet is located on the flow-through components of the water pump turbine, and the inlet pipe is connected to the sampling inlet. The sampling water pipe is connected to the inlet pipe. The inlet-side control valve is located on the inlet pipe and is used to open or close the connection between the inlet pipe and the sampling water pipe. The sediment monitoring device is connected to the sampling water pipe and is used to monitor sediment data in the water flowing through the sediment monitoring device to obtain sampled sediment data. The outlet pipe is connected to the sediment monitoring device and is used to discharge the water flowing through the sediment monitoring device through the outlet.

[0038] The method for monitoring sediment in water pump turbines includes:

[0039] The sampled sediment data output by the sediment monitoring device is acquired, and based at least on the sampled sediment data, real-time sediment monitoring data of the water flow through the pump turbine is obtained and displayed.

[0040] The beneficial effects of the water pump turbine sediment monitoring method and system of the present invention are as follows: A sampling inlet is installed on the flow-through component of the water pump turbine; the inlet pipe is connected to the sampling inlet; the sampling water pipe is connected to the inlet pipe; an inlet-side control valve is installed on the inlet pipe; the inlet-side control valve is used to open or disconnect the connection between the inlet pipe and the sampling water pipe; a sediment monitoring device is connected to the sampling water pipe; the sediment monitoring device is used to monitor the sediment data in the water flowing through the sediment monitoring device to obtain sampled sediment data; and an outlet pipe is connected to the sediment monitoring device; the outlet pipe is used to discharge the sediment from the water flowing through the turbine. The water flow passing through the sediment monitoring device is discharged through the outlet. The monitoring host uses the sampled sediment data output by the sediment monitoring device, and at least based on the sampled sediment data, obtains and displays the real-time sediment monitoring data of the water flow passing through the pump turbine. Thus, the water pump turbine sediment monitoring system of this embodiment of the invention differs from manual sampling from the water body. Instead, it samples from the flow-through components of the water pump turbine, and the entire process from sampling water flow and sediment data acquisition to discharge of the sampled water flow basically requires no manual intervention. It can realize automated real-time monitoring of sediment data of the water flow passing through the pump turbine. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a water pump turbine sediment monitoring system according to an embodiment of the present invention;

[0042] Figure 2 This is a flowchart of a method for monitoring sediment in a water pump turbine according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of a water pump turbine sediment monitoring system according to one embodiment;

[0044] Figure 4 A flowchart illustrating, in one embodiment, a method for obtaining real-time sediment monitoring data of the water flow passing through a pump turbine based at least on sampled sediment data;

[0045] Figure 5 This is a schematic diagram of the structure of a water pump turbine sediment monitoring system according to another embodiment;

[0046] Figure 6 This is a schematic diagram of the structure of a water pump turbine sediment monitoring system according to another embodiment.

[0047] Figure 7 A flowchart illustrating a method for correcting sediment data output by a sediment monitoring device according to one embodiment;

[0048] Figure 8 This is a schematic diagram of the display interface of a display device according to one embodiment;

[0049] Figure 9 This is a schematic diagram of a real-time monitoring interface according to one embodiment;

[0050] Figure 10 This is a schematic diagram of a data analysis interface according to one embodiment;

[0051] Figure 11 This is a schematic diagram of an alarm system interface according to one embodiment. Detailed Implementation

[0052] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0053] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0054] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0055] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0056] The names of the messages or information exchanged between the multiple devices in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0057] To address the problems existing in the aforementioned related technologies, this embodiment provides a method and system for monitoring sediment in water pump turbines.

[0058] like Figure 1 As shown in the figure, an embodiment of the present invention provides a water pump turbine sediment monitoring system, including: a sampling inlet 101, an inlet pipe 102, a sampling water pipe 103, an inlet side control valve 104, a sediment monitoring device 105, an outlet pipe 106, an outlet 107, and a monitoring host 108.

[0059] The sampling inlet 101 is installed on the flow passage component of the water pump turbine. The flow passage component is the core component that forms the water flow channel and is in direct contact with the water flow. It mainly includes the volute, the water guide mechanism, the impeller and the tailrace pipe. In some embodiments, the sampling inlet 101 can be specifically located on any one of the elbow section, diffuser section, volute, or ball valve pressure steel pipe extension section of the tailrace pipe. The elbow section is the curved part of the tailrace pipe connecting the straight conical pipe and the diffuser pipe, where the water flow changes direction. The diffuser section is the part of the tailrace pipe where the cross-section gradually widens and the flow velocity decreases. The volute is a spiral pressure water inlet pipe surrounding the runner, which is the first station for water flow into the pump turbine. The ball valve pressure steel pipe extension section is the upstream pressure water inlet section of the pump turbine. The water flow pressure in the elbow section and diffuser section of the tailrace pipe is lower than that in the volute and ball valve pressure steel pipe extension section, and the sediment distribution is uniform, making it suitable for long-term monitoring. In actual sampling, the sampling point can be placed below the phasing pressure water height to avoid flow separation. The water flow in the volute and ball valve pressure steel pipe extension section is relatively stable, the sediment distribution is uniform, and the pressure is relatively high, making it also suitable for long-term monitoring. However, when the pressure is high, a pressure reducing device needs to be considered for pressure reduction treatment.

[0060] The inlet pipe 102 is connected to the sampling inlet 101, and the sampling pipe 103 is connected to the inlet pipe 102. An inlet-side control valve 104 is installed on the inlet pipe 102 to open or close the connection between the inlet pipe 102 and the sampling pipe 103. When the monitoring system needs to collect water samples, the inlet-side control valve 104 is opened, connecting the inlet pipe 102 and the sampling pipe 103. The water sample enters the sampling pipe 103 through the sampling inlet 101 and the inlet pipe 102, enabling subsequent detection of sediment data in the water flow within the sampling pipe 103. When the monitoring system needs to stop sampling (e.g., for maintenance or shutdown), the inlet-side control valve 104 is closed, disconnecting the inlet pipe 102 and the sampling pipe 103, preventing water samples from entering the sampling pipe 103.

[0061] In some embodiments, the inlet-side control valve 104 can be a solenoid valve, which is controlled to open or close by the monitoring host 108.

[0062] The sediment monitoring device 105 is connected to the sampling water pipe 103. The sediment monitoring device 105 monitors the sediment data in the water flowing through the sediment monitoring device 105 to obtain sampled sediment data. In some embodiments, the sediment data includes at least sediment particle size data and sediment content data in the water flow; the sediment particle size data includes at least: sediment particle size distribution, median sediment particle size, average sediment particle size, maximum sediment particle size, and sediment particle size distribution curve; the sediment content data includes at least: real-time sediment content, average sediment content, and maximum sediment content.

[0063] In some embodiments, the sediment monitoring device 105 can be a laser particle size analyzer. The laser particle size analyzer emits a laser by activating an internal laser generator. The laser light reaches the end of the instrument through an optical fiber, passes through a 90° refraction window, and then passes through the water in the sampling water pipe 103. The forward-scattered light from the particles in the water reaches the receiving lens inside the instrument. After being focused by the lens, the light is projected onto a detection ring arranged at the other end of the lens, which consists of multiple (e.g., 36) thyristor photodiodes. The detection ring converts the received light signal into an electrical signal, which is then converted by engineering units and sent to the monitoring host 108.

[0064] The water outlet pipe 106 is connected to the sediment monitoring device 105, and the water outlet pipe 106 is used to discharge the water that has passed through the sediment monitoring device through the water outlet 107.

[0065] The monitoring host 108 can be a processor, server or other processing device with signal processing and display functions. The monitoring host 108 is connected to the sediment monitoring device 105 by signal, and the communication method can be RS232 / RS485 and TCP network.

[0066] In some embodiments, the monitoring host 108 is capable of performing the pump turbine sediment monitoring method or one or more steps thereof disclosed in the embodiments of the present invention.

[0067] like Figure 2 As shown in the figure, the method for monitoring sediment in a water pump turbine provided by this embodiment of the invention includes the following steps:

[0068] Step S210: Obtain the sampled sediment data output by the sediment monitoring device 105.

[0069] Step S220: Based at least on the sampled sediment data, obtain and display real-time sediment monitoring data of the water flow through the pump turbine.

[0070] Specifically, the sediment monitoring data in the water flow through the pump-turbine includes at least the sediment particle size data and sediment content data. The sediment particle size data includes at least: sediment particle size distribution, median sediment particle size, average sediment particle size, maximum sediment particle size, and sediment particle size distribution curve. The sediment content data includes at least: real-time sediment content, average sediment content, and maximum sediment content. Since the water flow in sampling pipe 103 is only a small portion of the water flow from the pump-turbine, the flow rate in sampling pipe 103 is much smaller than the flow rate of the water flowing through the pump-turbine. After determining the sediment data in the water flow in sampling pipe 103, it is necessary to calculate the sediment data of the water flowing through the pump-turbine based on the flow rate of the water flowing through the pump-turbine. Combined with the acquisition time, real-time sediment monitoring data can be obtained.

[0071] In this embodiment, the sampling inlet 101 is installed on the tailrace of the water pump turbine. The inlet pipe 102 is connected to the sampling inlet 101, and the sampling pipe 103 is connected to the inlet pipe 102. The inlet-side control valve 104 is installed on the inlet pipe 102 and is used to open or close the connection between the inlet pipe and the sampling pipe. The sediment monitoring device 105 is connected to the sampling pipe 103 and is used to monitor the sediment data in the water flowing through the sediment monitoring device 105 to obtain the sampled sediment data. The outlet pipe 106 is connected to the sediment monitoring device 105. Water pipe 106 is used to discharge the water flow passing through sediment monitoring device 105 through outlet 107. Monitoring host 108 is used to acquire the sampled sediment data output by sediment monitoring device 105, and at least based on the sampled sediment data, obtain and display real-time sediment monitoring data in the water flow passing through the pump turbine. Thus, the water pump turbine sediment monitoring system of this embodiment of the invention samples from the flow components of the water pump turbine, and the entire process from sampling water flow and sediment data acquisition to discharge of the sampled water flow basically does not require manual intervention, and can realize automated real-time sediment monitoring data of the water flow passing through the pump turbine.

[0072] Optionally, such as Figure 3 As shown, in Figure 1 Based on the water pump turbine sediment monitoring system, a first flow detection device 109 is installed on the outlet pipe 106 to detect the flow rate of the water in the outlet pipe 106. Since the flow rate of the water in the outlet pipe 106 is the same as the flow rate of the water flowing through the sediment monitoring device 105, the sampled water flow rate can be obtained by detecting the flow rate of the water in the outlet pipe 106 through the first flow detection device 109. In one embodiment, the first flow detection device 109 can be a flow meter.

[0073] like Figure 4 As shown, based at least on sampled sediment data, real-time sediment monitoring data of the water flow through the pump turbine is obtained and displayed, including the following steps:

[0074] Step S410: Obtain the flow rate of the water flowing through the pump-turbine. In some embodiments, a flow meter or other flow detection device can be installed on the flow-through components of the pump-turbine to detect the flow rate of the water flowing through the turbine.

[0075] Step S420: Based on the sampled sediment data, sampled water flow rate, and flow rate of the water pump turbine, determine the real-time sediment monitoring data of the water pump turbine flow rate.

[0076] In some embodiments, sediment data per unit flow rate can be determined based on sediment data in the water flow in the outlet pipe 106 and the sampled water flow rate, and then real-time sediment monitoring data of the water flow passing through the pump turbine can be determined based on the flow rate of the water flow passing through the pump turbine.

[0077] In addition, the sampling water flow rate and the flow rate of the pump turbine can be transmitted to the monitoring host 108 so that the monitoring host 108 can monitor the sampling water flow and the flow rate of the pump turbine in real time.

[0078] Optionally, such as Figure 5 As shown, in Figure 3 Based on the illustrated pump-turbine sediment monitoring system, a specific composition of the pump-turbine sediment monitoring system is provided. The inlet-side control valve 104 may include a first ball valve 1041 and a solenoid valve 1042, which are connected in series. The first ball valve 1041 can be manually opened or closed, while the solenoid valve 1042 can be controlled to open or close via the monitoring host 108. Under the combined action of the first ball valve 1041 and the solenoid valve 1042, the inlet-side control valve 104 is opened or closed. Under normal circumstances, the first ball valve 1041 is normally open. When sampling is required, the solenoid valve 1042 is controlled to open; when sampling needs to be stopped (e.g., for maintenance), the solenoid valve 1042 is controlled to close. The first flow detection device 109 is a flow meter.

[0079] An adjustable flow valve 110 and a pressure detection device (pressure transmitter) 111 are sequentially installed on the sampling water pipe 103 before the sediment monitoring device 105, according to the flow direction of the sampling water. The adjustable flow valve 110 is used to adjust the flow rate of the water in the sampling water pipe 103. By changing the opening of the valve, the flow rate of the water flowing through the sampling water pipe 103 can be precisely adjusted to ensure that the flow rate of the water entering the subsequent sediment monitoring device 105 is stable within the appropriate range. This avoids fluctuations in the monitored sediment data due to excessive flow or sediment deposition and blockage in the pipeline due to insufficient flow, thereby indirectly ensuring the accuracy of the monitored sediment data. The pressure detection device is used to detect the pressure of the water in the sampling water pipe 103.

[0080] A check valve 112 and an outlet control valve 113 are sequentially installed on the outlet pipe 106 according to the water flow direction. The outlet control valve 113 can be a manual ball valve. The check valve 112 is used to prevent the water in the outlet pipe 106 from flowing back, avoiding interference or damage to system data and components caused by backflow. When the system is running normally and the water flows in a preset direction (such as from the sampling water pipe 103 to the sediment monitoring device 105), the check valve 112 opens under the action of water pressure to ensure that the water flows smoothly through and into the sediment monitoring device 105, providing stable water flow conditions for the accurate collection of sediment monitoring data. If pressure fluctuations occur in the pipeline (such as a sudden increase in pressure at the downstream end or the sampling pump stopping, causing the water flow to reverse), the check valve will close quickly to prevent the water from flowing back, avoid backflow impact, and at the same time prevent impurities at the downstream end from entering the upstream sampling water pipe 103 with the backflow and causing blockage. The outlet-side control valve 113 is used to open or close the connection between the outlet pipe 106 and the outlet 107 to control the water flow in the pipeline where the sediment monitoring device 105 is located. It is opened during normal system monitoring to ensure water flow into the sediment monitoring device to obtain sediment characteristic data. It is closed during system maintenance to prevent water leakage and sudden pressure changes from posing a risk to equipment or personnel. The outlet-side control valve 113 can be a manual ball valve or an electrically controlled ball valve.

[0081] Optionally, such as Figure 6 As shown, in Figure 5 Based on the water pump turbine sediment monitoring system shown, the water pump turbine sediment monitoring system also includes: a calibration water pipe 114, a calibration side control valve 115, a calibration sampling port 116, a second flow detection device 117 and a pressure reducing valve 118 installed on the calibration water pipe 114, wherein the calibration side control valve 115 can be a manual ball valve.

[0082] The calibration water pipe 114 can be connected to the sampling water pipe 103. A calibration-side control valve 115 is installed on the calibration water pipe 114 to open or close the connection between the sampling water pipe 103 and the calibration water pipe 114, thereby controlling the sampling flow at the calibration sampling port 116. When manual analysis of sediment data is required, the calibration-side control valve 115 is opened; under normal circumstances, the calibration-side control valve 115 is closed. The calibration-side control valve 115 can be a manual ball valve or an electrically controlled ball valve.

[0083] The calibration sampling port 116 is used to discharge the water flow in the calibration water pipe 114 so as to manually analyze the sediment data in the water flow in the calibration water pipe 114. The manual analysis method can be a drying method, a filtration method, or other manual sampling analysis methods. The sediment data determined by manual analysis needs to be uploaded to the monitoring host 108 so as to be compared and corrected with the sediment data output by the sediment monitoring device 105.

[0084] The second flow detection device 117 is used to detect the flow rate of the water in the calibration water pipe 114 to obtain the calibration water flow rate. The second flow detection device 117 can be a flow meter. The pressure reducing valve 118 is used to reduce the pressure of the water in the calibration water pipe 114. When the system needs to separate a portion of the water sample from the sampling water pipe 103 for calibration or other operations, the pressure reducing valve 118 can adjust the pressure of this portion of the water sample to a suitable range, avoiding the impact of high-pressure water flow on subsequent calibration sampling equipment or operations, and ensuring the stability and safety of calibration sampling.

[0085] like Figure 7 The present invention also provides a method for correcting sediment data output by the sediment monitoring device 105, which is executed in the monitoring host 108 and includes the following steps:

[0086] Step S710: Receive the sediment data in the water flow in the calibration water pipe 114, which is obtained by the user based on the water flow and calibration water flow rate in the calibration water pipe 114.

[0087] Step S720: Compare the sediment data in the water flow of the calibration water pipe 114 at the same time with the sampled sediment data output by the sediment monitoring device 105 to obtain the comparison result. In one embodiment, the comparison result can be the deviation value between the sediment data in the water flow of the calibration water pipe 114 at the same time and the sampled sediment data output by the sediment monitoring device 105.

[0088] Step S730: Based on the comparison results, determine the calibration data of the sediment monitoring device 105 so as to perform real-time calibration on the sampled sediment data output by the sediment monitoring device 105.

[0089] In some embodiments, the comparison results can be input into a pre-trained correction model to obtain correction data, so as to perform real-time correction on the sampled sediment data output by the subsequent sediment monitoring device 105.

[0090] Optionally, the monitoring host 108 is also used to: obtain and display the wear prediction results of the sediment in the water flow of the pump turbine on the flow-through components of the pump turbine based on the median particle size and real-time sediment content, and to issue an alarm when the wear prediction results exceed the threshold.

[0091] In some embodiments, the median particle size and real-time sediment content in the flow water of the pump-turbine are input into a pre-trained pump-turbine sediment wear prediction system, and the pump-turbine sediment wear prediction system outputs the corresponding wear prediction results of the flow components of the pump-turbine.

[0092] Optionally, the monitoring host 108 is also used to: obtain and display historical sediment monitoring data and the changing trend of historical sediment monitoring data in the water flow through the pump turbine based on real-time sediment monitoring data in the water flow through the pump turbine at different times.

[0093] Optionally, the monitoring host 108 is also used to monitor each pipeline of the water pump turbine sediment monitoring system and to issue an alarm when an abnormality is detected; in one embodiment, the monitoring of each pipeline may include: monitoring the flow rate, pressure, water level, and temperature of the water flow, and / or monitoring the status of the water pump and the turbine, etc.

[0094] Optionally, the monitoring host 108 includes a display device, such as... Figure 8 As shown, the display device displays at least a real-time monitoring control 810, a historical data analysis control 820, and an alarm system control 830.

[0095] After the user triggers the real-time monitoring control 810 (e.g., by clicking the real-time monitoring control 810 via an external input device such as a mouse), such as Figure 9 As shown, upon entering the real-time monitoring interface 900, a real-time monitoring list 910 is displayed. The header items of the real-time monitoring list include pump identifier (pump number), turbine identifier (turbine number), timestamp, flow rate, water level, sediment content, temperature, pressure, pump status, turbine status, and operation. The timestamp in the real-time monitoring list 910 is used to indicate the time of data collection. The flow rate, water level, sediment content, temperature, pressure, pump status, and turbine status are used to represent various monitoring data. The operation is used to edit or delete the data item.

[0096] After the user triggers the historical data analysis control 820 (e.g., by clicking the historical data analysis control 820 via an external input device such as a mouse), such as Figure 10 As shown, the historical data analysis interface 1000 is entered. The historical data analysis interface 1000 displays the historical data list 1010. The header items of the historical data list 1010 include timestamp, sediment type, sediment density, flow rate, water level, temperature, turbidity, maintenance measures, user comments and analysis results. The timestamp in the historical data list 1010 represents the first moment (i.e., historical time).

[0097] After the user triggers the alarm system control 830 (e.g., by clicking the alarm system control 830 via an external input device such as a mouse), such as Figure 11As shown, the alarm system interface 1100 is accessed. The alarm system interface 1100 can display multiple alarm data entries, which are displayed in the form of an alarm data list 1110. The alarm data list 1110 includes one or more alarm data entries. The header items of the alarm data list 1110 include: threshold type, threshold, alarm level, notification method, activation time, deactivation time, notification message, sensor ID, activation status, creation time, and operation.

[0098] In other embodiments, in addition to displaying the real-time monitoring control 810, the historical data analysis control 820, and the alarm system control 830, the display device may also display data export controls, report generation controls, sensor diagnostic controls, trend prediction controls, user feedback controls, system performance monitoring controls, and custom instrument panel controls, which are respectively used to export monitoring data, generate monitoring data reports, diagnose sensors in the system, predict monitoring data trends, provide user feedback, monitor system performance, and customize the instrument panel displaying monitoring data.

[0099] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. In this application, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention according to actual needs. Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units can be implemented in hardware or as software functional units.

[0100] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A water pump turbine sediment monitoring system, characterized in that, include: The sampling inlet and the inlet pipe are provided. The sampling inlet is installed on the flow-through component of the water pump turbine, and the inlet pipe is connected to the sampling inlet. The sampling water pipe can be connected to the inlet water pipe; An inlet-side control valve is installed on the inlet pipe to open or disconnect the connection between the inlet pipe and the sampling water pipe. A sediment monitoring device, connected to the sampling water pipe, is used to monitor sediment data in the water flowing through the sediment monitoring device to obtain sampled sediment data; the sediment monitoring device includes: a laser particle size analyzer; The water outlet pipe is connected to the sediment monitoring device, and the water outlet pipe is used to discharge the water flowing through the sediment monitoring device through the water outlet. The monitoring host is used to acquire the sampled sediment data output by the sediment monitoring device, and at least based on the sampled sediment data, obtain and display the real-time sediment monitoring data of the water flow through the pump turbine. The water outlet pipe is equipped with a first flow detection device, which is used to detect the flow rate of the water in the water outlet pipe and obtain the sampled water flow rate. The process of obtaining and displaying real-time sediment monitoring data of the water flow through the pump turbine, based at least on the sampled sediment data, includes: Obtain the flow rate of the water passing through the water pump turbine; Based on the sampled sediment data, the sampled water flow rate, and the flow rate of the water pump turbine, the real-time sediment monitoring data of the water pump turbine flow rate is determined. An adjustable flow valve and a pressure detection device are sequentially installed on the sampling water pipe before the sediment monitoring device according to the direction of water flow; the adjustable flow valve is used to adjust the flow rate of the water in the sampling water pipe; the pressure detection device is used to detect the pressure of the water in the sampling water pipe; and / or, A check valve and an outlet-side control valve are sequentially installed on the outlet pipe according to the direction of water flow; the check valve is used to prevent the water in the outlet pipe from flowing back; the outlet-side control valve is used to open or close the connection between the outlet pipe and the outlet.

2. The water pump turbine sediment monitoring system according to claim 1, characterized in that, Also includes: The calibration water pipe is able to connect to the sampling water pipe; A calibration-side control valve is installed on the calibration water pipe to open or disconnect the connection between the sampling water pipe and the calibration water pipe. A calibration sampling port is used to discharge the water flow in the calibration water pipe so that the sediment data in the water flow in the calibration water pipe can be manually analyzed. The calibration water pipe is equipped with a second flow detection device and a pressure reducing valve. The second flow detection device is used to detect the flow rate of the water in the calibration water pipe to obtain the calibration water flow rate. The pressure reducing valve is used to reduce the pressure of the water in the calibration water pipe. The monitoring host is also used for: Receive sediment data in the water flow in the calibration water pipe, obtained from user input based on the water flow and the calibration water flow rate; The sediment data in the water flow in the calibration water pipe at the same time and the sampled sediment data output by the sediment monitoring device are compared to obtain the comparison results. Based on the comparison results, the calibration data of the sediment monitoring device is determined so as to perform real-time calibration of the sampled sediment data output by the sediment monitoring device.

3. The water pump turbine sediment monitoring system according to claim 1, characterized in that, The sampling inlet is located on any one of the elbow section of the tailrace of the water pump turbine, the diffuser section of the tailrace, the volute, or the extension section of the ball valve pressure steel pipe.

4. The water pump turbine sediment monitoring system according to claim 1, characterized in that, The sediment monitoring data in the water flow through the pump turbine includes at least sediment particle size data and sediment content data; the sediment particle size data includes at least: sediment particle size distribution, median sediment particle size, average sediment particle size, maximum sediment particle size, and sediment particle size distribution curve; the sediment content data includes at least: real-time sediment content, average sediment content, and maximum sediment content. The monitoring host is also used for: Based on the median particle size and real-time sediment content in the water flow through the pump-turbine, the wear prediction results of the sediment in the water flow on the flow components of the pump-turbine are obtained and displayed, and an alarm is triggered when the wear prediction results exceed a threshold.

5. The water pump turbine sediment monitoring system according to claim 4, characterized in that, The method of obtaining and displaying the wear prediction results of the flow-through components of the pump-turbine based on the median particle size and real-time sediment content in the flow-through water of the pump-turbine includes: The median particle size and real-time sediment content in the water flow of the pump-turbine are input into the sediment wear prediction model of the pump-turbine. The sediment wear prediction model of the pump-turbine outputs the wear prediction results of the corresponding flow components of the pump-turbine.

6. The water pump turbine sediment monitoring system according to any one of claims 1 to 5, characterized in that, The monitoring host is also used for: Based on real-time sediment monitoring data in the flow of water through the pump-turbine at different times, historical sediment monitoring data and the changing trends of historical sediment monitoring data in the flow of water through the pump-turbine are obtained and displayed; and / or, The water flow data in each pipeline of the water pump turbine sediment monitoring system is monitored, and an alarm is triggered when an abnormality is detected.

7. A method for monitoring sediment in a water pump turbine, characterized in that, The system is applied to a water pump turbine sediment monitoring system, which includes: a sampling inlet, an inlet pipe, a sampling water pipe, an inlet-side control valve, a sediment monitoring device, an outlet pipe, and an outlet. The sampling inlet is located on the flow-through components of the water pump turbine, and the inlet pipe is connected to the sampling inlet. The sampling water pipe is connected to the inlet pipe. The inlet-side control valve is located on the inlet pipe and is used to open or close the connection between the inlet pipe and the sampling water pipe. The sediment monitoring device is connected to the sampling water pipe and is used to monitor sediment data in the water flowing through the device to obtain sampled sediment data. The outlet pipe is connected to the sediment monitoring device and is used to discharge the water flowing through the device through the outlet. The sediment monitoring device includes a laser particle size analyzer. The method for monitoring sediment in water pump turbines includes: Acquire the sampled sediment data output by the sediment monitoring device, and at least based on the sampled sediment data, obtain and display the real-time sediment monitoring data of the water flow through the pump turbine. The water outlet pipe is equipped with a first flow detection device, which is used to detect the flow rate of the water in the water outlet pipe and obtain the sampled water flow rate. The process of obtaining and displaying real-time sediment monitoring data of the water flow through the pump turbine, based at least on the sampled sediment data, includes: Obtain the flow rate of the water passing through the water pump turbine; Based on the sampled sediment data, the sampled water flow rate, and the flow rate of the water pump turbine, the real-time sediment monitoring data of the water pump turbine flow rate is determined. An adjustable flow valve and a pressure detection device are sequentially installed on the sampling water pipe before the sediment monitoring device according to the direction of water flow; the adjustable flow valve is used to adjust the flow rate of the water in the sampling water pipe; the pressure detection device is used to detect the pressure of the water in the sampling water pipe; and / or, A check valve and an outlet-side control valve are sequentially installed on the outlet pipe according to the direction of water flow; the check valve is used to prevent the water in the outlet pipe from flowing back; the outlet-side control valve is used to open or close the connection between the outlet pipe and the outlet.

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