Metering method for water taking process of water taking head of pump station

Abstract

The invention discloses a metering method for the water taking process of a water taking head of a pump station, and the method comprises the steps: collecting the main water taking flow of the water taking head of an enterprise, and arranging the information of a water supply network; investigating the number, power, lift and other basic data of water intake pumping stations, and analyzing the operation characteristics of the pumping stations; a correlation model of the operation efficiency of the water intake pumping station and the water intake amount is further constructed, different water intake working conditions and schemes are considered, an enterprise water intake head water balance test is carried out, the correlation model of the water intake pumping station under different water intake working conditions is calibrated, and correlation models under different parameters are obtained; through data such as a user side metering facility, a water intake pumping station operation parameter and a water intake pumping station water quantity correlation parameter, and in combination with a correlation model, the water intake amount of a water intake head is accurately calculated in real time, and a data support is provided for water intake analysis.

Description

Technical Field

[0001] This invention relates to the field of pump station data analysis, and more specifically, to a metering method for the water intake process at the water intake head of a pump station. Background Technology

[0002] Water is the source of life and a vital resource for socio-economic development. Water metering, which involves the accurate measurement and recording of water consumption through scientific methods, is a crucial means of sustainable water resource utilization. It permeates all aspects of resource protection, economic regulation, and social governance, and is a key measure for industrial enterprises to implement water conservation management and water use control. Enterprise metering facilities serve as the "eyes" and "yardstick" for water conservation efforts. By quantifying water usage data and identifying abnormal consumption, they enable the optimization of processes, support water-saving technological upgrades, and ultimately achieve the goals of "measurable, accurate, manageable, and cost-effective" water conservation, thus facilitating the green and low-carbon transformation of enterprises.

[0003] According to the "Technical Guidelines for Water Intake Metering (GB / T 28714-2023)," "water intake units or individuals should classify and grade water intake according to water source, water use, and water intake scale, and equip themselves with corresponding water intake metering facilities (appliances)," and "the straight pipe section before the installation location of the pipeline flow meter should preferably be greater than 10 times the pipe diameter, and the straight pipe section after the installation location should preferably be greater than 5 times the pipe diameter." The water intake head is the first water-using unit of an industrial enterprise, including the process of water pumping from the water intake pumping station and the raw water pipeline transporting water to the industrial enterprise. Its water intake metering reflects the total water consumption of the entire enterprise and is a crucial link in the enterprise's water use and water conservation management. However, in the existing water intake metering system, because some enterprises were built a long time ago, the existing metering facilities are not installed at the water intake head, and no space has been reserved for new water intake metering. This leads to deviations in water intake volume statistics and fails to meet the requirements of water use control, water intake planning management, water resource fee (tax) collection, water conservation management, and water use statistical surveys. Therefore, for industrial enterprises that draw water from pumping stations and are unable to install metering equipment, further in-depth and detailed research is needed on how to effectively and reasonably estimate the water intake volume of the pumping station. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a metering method for the water intake process at the water intake head of a pumping station.

[0005] The first aspect of this invention provides a metering method for the water intake process at the water intake head of a pumping station, comprising: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

[0006] In this solution, S1 specifically refers to: Based on the target water intake pumping station, collect water supply network information, count the metering facilities at the water intake head, and determine the installation conditions for water supply heads that have not installed metering facilities. Set the water supply network parameters and draw a schematic diagram of the water supply network based on the water supply network information; Based on the water intake head conditions of the target water intake pumping station, determine the number, model, design head, design flow rate, speed, shaft power, and operating parameters of the target water intake pumping station.

[0007] In this scheme, S2 specifically refers to: The operating efficiency is calculated based on the parameters of the water supply network and the operating parameters, and a correlation model between the operating efficiency of the water intake pumping station and the water intake volume is constructed. Operating efficiency is determined by combining water supply network parameters and operational parameters, based on the following formula: (1), (2), (3), (4), (5), (6), (7), In the formula, Here, denoted as outlet velocity and inlet velocity, respectively; Q is the pump station's water intake flow rate; D1 and D2 are the inlet and outlet cross-sectional radii, respectively; and H is the pump station's head. Where is the pressure difference between the inlet and outlet, and r is the specific gravity of the fluid. The difference in pressure gauge level between the inlet and outlet. Where W is the useful power and N is the input power, the same as N. For overall efficiency, For pump efficiency, Where g is the transmission efficiency, and g is the acceleration due to gravity. The association model is specifically represented as follows: (8), in, This is an empirical constant that takes into account factors such as pipeline resistance, liquid viscosity, and parallel operation of pump stations that cause flow rate attenuation; P is shaft power, and 2.73 is a unit correction constant.

[0008] In this scheme, the water intake scheme combination in S3 is specifically represented as follows: (9), In the formula, For water intake plan, , , These are water source, pumping station, and raw water pipe, and different combination schemes are set based on these three parameters.

[0009] In this scheme, according to preset standards, water balance tests are conducted on the water intake heads of various water intake schemes. During the test, the pump station is set to operate at full load. The inflow and outflow of water at each stage of the water intake head are systematically measured, statistically analyzed and calculated. The continuous test time is at least 7 days, and data is recorded once every 24 hours. Based on the principle of water balance, a water balance diagram for each water intake scheme is formulated.

[0010] In this solution, S5 specifically refers to: Based on the water balance test results, the balanced water volume is substituted into the correlation model. Combined with the average values ​​of operating power, operating time, and overall efficiency parameters actually monitored during the water balance test, the empirical constants of the correlation model for each water intake scheme are calculated. These empirical constants are then substituted into the correlation model to determine the water head intake metering expression. .

[0011] In this scheme, S5 further includes: collecting pump station parameters based on user-end metering facilities, calculating the water intake volume of the water intake head in real time by combining the correlation model, and displaying it through the user terminal.

[0012] A second aspect of the present invention also provides a metering system for the water intake process at the water intake head of a pumping station. The system includes a memory and a processor. The memory includes a metering program for the water intake process at the water intake head of the pumping station. When the processor executes the metering program for the water intake process at the water intake head of the pumping station, it performs the following steps: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

[0013] A third aspect of the present invention also provides a computer-readable storage medium including a metering program for the water intake process of a pumping station intake head, wherein when the metering program for the water intake process of a pumping station intake head is executed by a processor, the metering program for the water intake process of a pumping station intake head implements the steps of the metering method for the water intake process of a pumping station intake head as described in any of the preceding claims.

[0014] This invention discloses a metering method for the water intake process at the water intake head of a pumping station. It involves collecting data on the main water intake process at the enterprise's water intake head and organizing water supply network information; investigating basic data such as the number, power, and head of water intake pumping stations and analyzing their operational characteristics; further constructing a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; considering different water intake conditions and schemes; conducting water balance tests at the enterprise's water intake head; calibrating the correlation model under different water intake conditions to obtain correlation models with different parameters; and accurately and in real-time calculating the water intake volume at the water intake head using data from user-end metering facilities, water intake pumping station operating parameters, and water intake volume correlation parameters, combined with the correlation model, thus providing data support for water intake analysis. Attached Figure Description

[0015] Figure 1 A flowchart of a metering method for water intake process at the water intake head of a pumping station according to the present invention is shown; Figure 2 A schematic diagram of the water supply network of the present invention is shown; Figure 3 A schematic diagram of the water intake scheme of the present invention is shown. Figure 1 ; Figure 4 A schematic diagram of the water intake scheme of the present invention is shown. Figure 2 ; Figure 5 A schematic diagram of the water intake scheme of the present invention is shown. Figure 3 ; Figure 6 A schematic diagram of the water intake scheme of the present invention is shown. Figure 4 ; Figure 7 A schematic diagram of the water balance test results is shown. Figure 1 ; Figure 8 A schematic diagram of the water balance test results is shown. Figure 2 ; Figure 9 A schematic diagram of the water balance test results is shown. Figure 3 ; Figure 10 A schematic diagram of the water balance test results is shown. Figure 4 ; Figure 11 A block diagram of a metering system for the water intake process at the water intake head of a pumping station is shown. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0018] Figure 1 A flowchart of a metering method for water intake process at the water intake head of a pumping station according to the present invention is shown.

[0019] like Figure 1 As shown, the first aspect of the present invention provides a metering method for the water intake process at the water intake head of a pumping station, comprising: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

[0020] According to an embodiment of the present invention, S1 specifically includes: Based on the target water intake pumping station, collect water supply network information, count the metering facilities at the water intake head, and determine the installation conditions for water supply heads that have not installed metering facilities. Set the water supply network parameters and draw a schematic diagram of the water supply network based on the water supply network information; Based on the water intake head conditions of the target water intake pumping station, determine the number, model, design head, design flow rate, speed, shaft power, and operating parameters of the target water intake pumping station.

[0021] It should be noted that after determining the installation conditions of the facility, if the installation conditions are met, the metering facility is directly installed to measure the water intake at the water intake head, thereby increasing the accuracy of the metering process. For water intake heads that do not meet the installation conditions, the method of this invention is used for associated metering.

[0022] Operating parameters include the number, model, design head, design flow rate, rotational speed, shaft power, and other relevant parameters of the water intake pumping stations.

[0023] In S1, by analyzing the water intake head's water supply network, the water source can be determined, along with relevant parameters such as the number, length, diameter, and direction of the raw water pipes corresponding to different water sources, as well as the installation locations, quantities, and calibration status of existing metering facilities on different pipes. The water supply network parameters include the aforementioned raw water pipe quantity, length, diameter, direction, metering facility installation locations, quantities, and calibration status.

[0024] Figure 2 A schematic diagram of the water supply network of the present invention is shown.

[0025] The following is the water intake of the Shamei Pumping Station in Zhuhai City. The main water source for the Shamei Pumping Station is the Hutiaomen Waterway, with the Pingsha Xianfengling Reservoir as an emergency backup source. The parameters of the Shamei Pumping Station's water supply network are shown in Table 1, and the parameters of the metering facilities are shown in Table 2. The diagram shows an example parameter list. Parameters can be appropriately increased or decreased based on the actual network and research needs for data collection and analysis. A schematic diagram of the water supply network is shown below. Figure 2 As shown.

[0026] Table 1. Statistics of Water Supply Network Parameters of Shamei Pumping Station:

[0027] Table 2. Parameters of existing metering facilities at Shamei Pumping Station:

[0028] For example, the operating parameters of each pumping station in Shamei Pumping Station, Zhuhai City are shown in Table 3.

[0029] Table 3. Operating parameters of Shamei Pumping Station:

[0030] According to an embodiment of the present invention, S2 specifically includes: The operating efficiency is calculated based on the parameters of the water supply network and the operating parameters, and a correlation model between the operating efficiency of the water intake pumping station and the water intake volume is constructed. Operating efficiency is determined by combining water supply network parameters and operational parameters, based on the following formula: (1), (2), (3), (4), (5), (6), (7), In the formula, Here, denoted as outlet velocity and inlet velocity, respectively; Q is the pump station's water intake flow rate; D1 and D2 are the inlet and outlet cross-sectional radii, respectively; and H is the pump station's head. Where is the pressure difference between the inlet and outlet, and r is the specific gravity of the fluid. The difference in pressure gauge level between the inlet and outlet. Where W is the useful power and N is the input power, the same as N. For overall efficiency, For pump efficiency, Where g is the transmission efficiency, and g is the acceleration due to gravity. The association model is specifically represented as follows: (8), in, This is an empirical constant that takes into account factors such as pipeline resistance, liquid viscosity, and parallel operation of pump stations that cause flow rate attenuation; P is shaft power, and 2.73 is a unit correction constant.

[0031] It should be noted that the present invention is based on the correlation of relevant parameters such as the inlet velocity, outlet velocity, pump head, useful power, input power, comprehensive efficiency, and pump efficiency of the water intake pumping station (Equations (1) to (7)) to derive a correlation model between the operating efficiency of the water intake pumping station and the water intake volume, as shown in Equation (8).

[0032] According to an embodiment of the present invention, in step S3, the water intake scheme combination is specifically represented as follows: (9), In the formula, For water intake plan, , , These are water source, pumping station, and raw water pipe, and different combination schemes are set based on these three parameters.

[0033] It should be noted that, based on the water intake situation of the pumping station, different water sources and pumping stations with different power are considered, and different combinations of water sources, pumping stations, and raw water pipes are set up to test and determine the relevant parameters of the pumping station's water intake under different water intake conditions.

[0034] Figure 3 A schematic diagram of the water intake scheme of the present invention is shown. Figure 1 ; Figure 4 A schematic diagram of the water intake scheme of the present invention is shown. Figure 2 ; Figure 5 A schematic diagram of the water intake scheme of the present invention is shown. Figure 3 ; Figure 6 A schematic diagram of the water intake scheme of the present invention is shown. Figure 4 ; For example, the Shamei Pumping Station in Zhuhai City has set up a mixed water intake scheme based on the water source. Figure 3 ), Wushan Diversion Canal Water Intake Plan ( Figure 4 ), Xianfengling Reservoir water intake plan ( Figure 5 ), Xianfengling Reservoir Water Replenishment Plan ( Figure 6 Four water intake options, such as... Figures 3-6 As shown.

[0035] According to an embodiment of the present invention, S4 specifically includes: According to the preset standards, water balance tests were conducted on the water intake heads of various water intake schemes. During the test, the pump station was set to operate at full load. The inflow and outflow of water at each stage of the water intake head were systematically measured, statistically analyzed and calculated. The continuous test time was at least 7 days, and data was recorded every 24 hours. Based on the principle of water balance, a water balance diagram was developed for each water intake scheme.

[0036] It should be noted that the preset standard is set according to the "General Rules for Water Balance Testing GBT12452-2022", and each water intake scheme is tested with the water intake head of the pump station as the water use unit.

[0037] Figure 7 A schematic diagram of the water balance test results is shown. Figure 1 ; Figure 8 A schematic diagram of the water balance test results is shown. Figure 2 ; Figure 9 A schematic diagram of the water balance test results is shown. Figure 3 ; Figure 10 A schematic diagram of the water balance test results is shown. Figure 4 ; For example, at the Shamei Pumping Station in Zhuhai City, the water balance test results (i.e., water balance diagrams) for the four water intake heads are as follows: Figures 7-10 As shown, specifically: the water balance test results of the mixed water intake scheme ( Figure 7 ), Water balance test results of the Wushan Diversion Canal water intake scheme ( Figure 8), Water balance test results of the water intake scheme of Xianfengling Reservoir ( Figure 9 ), Water balance test results of the Xianfengling Reservoir water replenishment plan ( Figure 10 ).

[0038] exist Figures 7-10 middle, and This represents the inflow and outflow of water, and is labeled accordingly based on different water intake schemes. Represents water used for landscaping. This represents the amount of water lost.

[0039] According to an embodiment of the present invention, S5 specifically includes: Based on the water balance test results, the balanced water volume is substituted into the correlation model. Combined with the average values ​​of operating power, operating time, and overall efficiency parameters actually monitored during the water balance test, the empirical constants of the correlation model for each water intake scheme are calculated. These empirical constants are then substituted into the correlation model to determine the water head intake metering expression. .

[0040] It should be noted that, based on the water balance test results of different water intake schemes, the balanced water volume is substituted into equations (8) and (9), and the average values ​​of the operating power, operating time, and comprehensive efficiency parameters actually monitored during the water balance test are used to determine empirical constants. For example, at the Shamei Pumping Station in Zhuhai City, the four water intake schemes—mixed water intake scheme, Wushan Diversion Canal water intake scheme, Xianfengling Reservoir water intake scheme, and Xianfengling Reservoir water replenishment scheme—are converted and converted. The values ​​were 0.68, 0.68, 0.73, and 0.68, respectively. The water intake metering formula for the water intake head was further determined.

[0041] Substituting the calculated operating experience constants of the pump station water intake under different water intake schemes into equation (8), we obtain the calculation formulas for the water intake head of the pump station under different water intake schemes. By monitoring parameters such as the pump station operating power, comprehensive efficiency, and inlet and outlet pressure difference in real time, we can reasonably calculate and determine the water intake of the pump station water intake head, effectively solving the problem that insufficient metering conditions at the pump station water intake head lead to the inability to achieve water intake metering.

[0042] For example, the water intake head metering formula for the Shamei Pumping Station in Zhuhai City is calculated as follows: (10) Equation (10) corresponds to the mixed water intake scheme, the Wushan water diversion canal water intake scheme, and the Xianfengling reservoir water replenishment scheme.

[0043] (11), Equation (11) corresponds to the water intake scheme of Xianfengling Reservoir.

[0044] Since the empirical constants are equal in all four water intake schemes, there are only two types of empirical parameters. There are two specific expressions, such as (10) and (11).

[0045] The S5 also includes: collecting pump station parameters based on user-end metering facilities, calculating the water intake volume of the water intake head in real time by combining the correlation model, and displaying it through the user terminal.

[0046] The pump station parameters are The relevant parameters in the expression.

[0047] According to an embodiment of the present invention, it further includes: A camera device and an ultrasonic sensor are installed at the water intake head to monitor changes in the water level of the pumping station, and the rate of water level change is calculated by taking into account the time factor. During the secondary water balance test at the water intake head, multiple time periods were set to calculate the rate of water level change, resulting in multiple rate values. The pump station's water intake flow rate is calculated in real time based on the water intake head metering formula and marked as multiple water intake volumes. After N1 time periods, N1 rate values ​​and N1 water intake values ​​are collected and linear regression is performed to obtain the fitting coefficients corresponding to the N1 time periods. Based on the correlation rate set by the fitting coefficient, the abnormal situation of the pump station's water intake equipment is judged based on the change of the correlation rate throughout the test period, equipment early warning information is generated, and the reliability of the test plan and equipment is evaluated.

[0048] It should be noted that the correlation rate can effectively reflect whether the monitoring of water intake and usage at a pumping station during a certain period matches the actual situation and the predicted calculation. Generally speaking, the correlation rate needs to be greater than a certain expected value, that is, there is a certain correlation between the water level change rate and the real-time calculated water intake flow. Here, the correlation model is used to calculate the water intake, and based on the changes in the correlation rate, the abnormal conditions of the pumping station equipment and the reliability of the testing process can be effectively assessed, thereby enabling the maintenance of the pumping equipment and the analysis of the reliability of the testing and equipment.

[0049] The correlation rate is proportional to the fitting coefficient. Among the multiple time periods, the number of time periods N0 is much greater than N1. Each time the number of time periods collected reaches N1, the correlation degree is calculated once, and the correlation degree is equal to N0 / N1.

[0050] Figure 11 A block diagram of a metering system for the water intake process at the water intake head of a pumping station is shown.

[0051] A second aspect of the present invention also provides a metering system 11 for the water intake process at the water intake head of a pumping station. The system includes a memory 12 and a processor 13. The memory 12 includes a metering program for the water intake process at the water intake head of the pumping station. When the metering program for the water intake process at the water intake head of the pumping station is executed by the processor 13, it performs the following steps: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

[0052] When the system operates steps S1 to S5, it implements all the steps of the metering method described above for the water intake process of a pumping station.

[0053] According to an embodiment of the present invention, S1 specifically includes: Based on the target water intake pumping station, collect water supply network information, count the metering facilities at the water intake head, and determine the installation conditions for water supply heads that have not installed metering facilities. Set the water supply network parameters and draw a schematic diagram of the water supply network based on the water supply network information; Based on the water intake head conditions of the target water intake pumping station, determine the number, model, design head, design flow rate, speed, shaft power, and operating parameters of the target water intake pumping station.

[0054] It should be noted that after determining the installation conditions of the facility, if the installation conditions are met, the metering facility is directly installed to measure the water intake at the water intake head, thereby increasing the accuracy of the metering process. For water intake heads that do not meet the installation conditions, the method of this invention is used for associated metering.

[0055] Operating parameters include the number, model, design head, design flow rate, rotational speed, shaft power, and other relevant parameters of the water intake pumping stations.

[0056] In S1, by analyzing the water intake head's water supply network, the water source can be determined, along with relevant parameters such as the number, length, diameter, and direction of the raw water pipes corresponding to different water sources, as well as the installation locations, quantities, and calibration status of existing metering facilities on different pipes. The water supply network parameters include the aforementioned raw water pipe quantity, length, diameter, direction, metering facility installation locations, quantities, and calibration status.

[0057] According to an embodiment of the present invention, S2 specifically includes: The operating efficiency is calculated based on the parameters of the water supply network and the operating parameters, and a correlation model between the operating efficiency of the water intake pumping station and the water intake volume is constructed. Operating efficiency is determined by combining water supply network parameters and operational parameters, based on the following formula: (1), (2), (3), (4), (5), (6), (7), In the formula, Here, denoted as outlet velocity and inlet velocity, respectively; Q is the pump station's water intake flow rate; D1 and D2 are the inlet and outlet cross-sectional radii, respectively; and H is the pump station's head. Where is the pressure difference between the inlet and outlet, and r is the specific gravity of the fluid. The difference in pressure gauge level between the inlet and outlet. Where W is the useful power and N is the input power, the same as N. For overall efficiency, For pump efficiency, Where g is the transmission efficiency, and g is the acceleration due to gravity. The association model is specifically represented as follows: (8), in, This is an empirical constant that takes into account factors such as pipeline resistance, liquid viscosity, and parallel operation of pump stations that cause flow rate attenuation; P is shaft power, and 2.73 is a unit correction constant.

[0058] It should be noted that the present invention is based on the correlation of relevant parameters such as the inlet velocity, outlet velocity, pump head, useful power, input power, comprehensive efficiency, and pump efficiency of the water intake pumping station (Equations (1) to (7)) to derive a correlation model between the operating efficiency of the water intake pumping station and the water intake volume, as shown in Equation (8).

[0059] According to an embodiment of the present invention, in step S3, the water intake scheme combination is specifically represented as follows: (9), In the formula, For water intake plan, , , These are water source, pumping station, and raw water pipe, and different combination schemes are set based on these three parameters.

[0060] It should be noted that, based on the water intake situation of the pumping station, different water sources and pumping stations with different power are considered, and different combinations of water sources, pumping stations, and raw water pipes are set up to test and determine the relevant parameters of the pumping station's water intake under different water intake conditions.

[0061] According to an embodiment of the present invention, S4 specifically includes: According to the preset standards, water balance tests were conducted on the water intake heads of various water intake schemes. During the test, the pump station was set to operate at full load. The inflow and outflow of water at each stage of the water intake head were systematically measured, statistically analyzed and calculated. The continuous test time was at least 7 days, and data was recorded every 24 hours. Based on the principle of water balance, a water balance diagram was developed for each water intake scheme.

[0062] It should be noted that the preset standard is set according to the "General Rules for Water Balance Testing GBT12452-2022", and each water intake scheme is tested with the water intake head of the pump station as the water use unit.

[0063] According to an embodiment of the present invention, S5 specifically includes: Based on the water balance test results, the balanced water volume is substituted into the correlation model. Combined with the average values ​​of operating power, operating time, and overall efficiency parameters actually monitored during the water balance test, the empirical constants of the correlation model for each water intake scheme are calculated. These empirical constants are then substituted into the correlation model to determine the water head intake metering expression. .

[0064] It should be noted that, based on the water balance test results of different water intake schemes, the balanced water volume is substituted into equations (8) and (9), and the average values ​​of the operating power, operating time, and comprehensive efficiency parameters actually monitored during the water balance test are used to determine empirical constants. For example, at the Shamei Pumping Station in Zhuhai City, the four water intake schemes—mixed water intake scheme, Wushan Diversion Canal water intake scheme, Xianfengling Reservoir water intake scheme, and Xianfengling Reservoir water replenishment scheme—are converted and converted. The values ​​were 0.68, 0.68, 0.73, and 0.68, respectively. The water intake metering formula for the water intake head was further determined.

[0065] Substituting the calculated operating experience constants of the pump station water intake under different water intake schemes into equation (8), we obtain the calculation formulas for the water intake head of the pump station under different water intake schemes. By monitoring parameters such as the pump station operating power, comprehensive efficiency, and inlet and outlet pressure difference in real time, we can reasonably calculate and determine the water intake of the pump station water intake head, effectively solving the problem that insufficient metering conditions at the pump station water intake head lead to the inability to achieve water intake metering.

[0066] The S5 also includes: collecting pump station parameters based on user-end metering facilities, calculating the water intake volume of the water intake head in real time by combining the correlation model, and displaying it through the user terminal.

[0067] A third aspect of the present invention also provides a computer-readable storage medium including a metering program for the water intake process of a pumping station intake head, wherein when the metering program for the water intake process of a pumping station intake head is executed by a processor, the metering program for the water intake process of a pumping station intake head implements the steps of the metering method for the water intake process of a pumping station intake head as described in any of the preceding claims.

[0068] This invention discloses a metering method for the water intake process at the water intake head of a pumping station. It involves collecting data on the main water intake process at the enterprise's water intake head and organizing water supply network information; investigating basic data such as the number, power, and head of water intake pumping stations and analyzing their operational characteristics; further constructing a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; considering different water intake conditions and schemes; conducting water balance tests at the enterprise's water intake head; calibrating the correlation model under different water intake conditions to obtain correlation models with different parameters; and accurately and in real-time calculating the water intake volume at the water intake head using data from user-end metering facilities, water intake pumping station operating parameters, and water intake volume correlation parameters, combined with the correlation model, thus providing data support for water intake analysis.

[0069] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0070] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0071] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0072] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0073] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0074] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A metering method for the water intake process at the water intake head of a pumping station, characterized in that, include: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

2. The metering method for the water intake process at the water intake head of a pumping station according to claim 1, characterized in that, Specifically, S1 is: Based on the target water intake pumping station, collect water supply network information, count the metering facilities at the water intake head, and determine the installation conditions for water supply heads that have not installed metering facilities. Set the water supply network parameters and draw a schematic diagram of the water supply network based on the water supply network information; Based on the water intake head conditions of the target water intake pumping station, determine the number, model, design head, design flow rate, speed, shaft power, and operating parameters of the target water intake pumping station.

3. The metering method for the water intake process at the water intake head of a pumping station according to claim 2, characterized in that, Specifically, S2 is: The operating efficiency is calculated based on the parameters of the water supply network and the operating parameters, and a correlation model between the operating efficiency of the water intake pumping station and the water intake volume is constructed. Operating efficiency is determined by combining water supply network parameters and operational parameters, based on the following formula: （1）， （2）， （3）， （4）， （5）， （6）， （7）， In the formula, Here, denoted as outlet velocity and inlet velocity, respectively; Q is the pump station's water intake flow rate; D1 and D2 are the inlet and outlet cross-sectional radii, respectively; and H is the pump station's head. Where is the pressure difference between the inlet and outlet, and r is the specific gravity of the fluid. The difference in pressure gauge level between the inlet and outlet. Where W is the useful power and N is the input power, the same as N. For overall efficiency, For pump efficiency, Where g is the transmission efficiency, and g is the acceleration due to gravity. The association model is specifically represented as follows: （8）， in, This is an empirical constant that takes into account factors such as pipeline resistance, liquid viscosity, and parallel operation of pump stations that cause flow rate attenuation; P is shaft power, and 2.73 is a unit correction constant.

4. The metering method for the water intake process at the water intake head of a pumping station according to claim 3, characterized in that, In S3, the water intake scheme combination is specifically represented as follows: （9）， In the formula, For water intake plan, , , These are water source, pumping station, and raw water pipe, and different combination schemes are set based on these three parameters.

5. A metering method for the water intake process at the water intake head of a pumping station according to claim 4, characterized in that, According to preset standards, water balance tests are conducted on the water intake heads of various water intake schemes. During the test, the pump station is set to operate at full load. The inflow and outflow of water at each stage of the water intake head are systematically measured, statistically analyzed, and calculated. The continuous test time is at least 7 days, and data is recorded once every 24 hours. Based on the principle of water balance, a water balance diagram is developed for each water intake scheme.

6. The metering method for the water intake process at the water intake head of a pumping station according to claim 1, characterized in that, Specifically, S5 is: Based on the water balance test results, the balanced water volume is substituted into the correlation model. Combined with the average values ​​of operating power, operating time, and overall efficiency parameters actually monitored during the water balance test, the empirical constants of the correlation model for each water intake scheme are calculated. These empirical constants are then substituted into the correlation model to determine the water head intake metering expression. .

7. A metering method for the water intake process at the water intake head of a pumping station according to claim 1, characterized in that, The S5 also includes: collecting pump station parameters based on user-end metering facilities, calculating the water intake volume of the water intake head in real time by combining the correlation model, and displaying it through the user terminal.

8. A metering system for the water intake process at the water intake head of a pumping station, characterized in that, The system includes a memory and a processor. The memory contains a metering program for the water intake process at the pumping station's water intake head. When the processor executes the metering program for the water intake process at the pumping station's water intake head, it performs the following steps: S1: Based on the target water intake pumping station, conduct statistics on the water intake head metering facilities and collect information on the water supply network, and determine the water supply network parameters and operating parameters; S2: Calculate the operating efficiency based on the water supply network parameters and operating parameters, and construct a correlation model between the operating efficiency of the water intake pumping station and the water intake volume; S3: Multiple water intake schemes are formed by combining various water sources, pumping stations, and raw water pipes based on the target water intake pumping station; S4: Conduct water balance tests at the water intake head according to various water intake schemes. During the test, the pump station is set to run at full load, and a water balance diagram is prepared for each water intake scheme. S5: Based on the water balance test results, determine the parameters of the correlation model, and determine the water intake metering expression of the water intake head based on the correlation model.

9. A metering system for the water intake process at the water intake head of a pumping station according to claim 8, characterized in that, Specifically, S1 refers to: Based on the target water intake pumping station, collect water supply network information, count the metering facilities at the water intake head, and determine the installation conditions for water supply heads that have not installed metering facilities. Set the water supply network parameters and draw a schematic diagram of the water supply network based on the water supply network information; Based on the water intake head conditions of the target water intake pumping station, determine the number, model, design head, design flow rate, speed, shaft power, and operating parameters of the target water intake pumping station.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a metering program for the water intake process of a pumping station intake head. When the metering program for the water intake process of a pumping station intake head is executed by a processor, it implements the steps of the metering method for the water intake process of a pumping station intake head as described in any one of claims 1 to 7.

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