A method and apparatus for determining the working efficiency of a water supply pump in a water supply system.

Abstract

This invention provides a method and apparatus for determining the operating efficiency of a feedwater pump in a water supply system, relating to the field of thermal power generation technology. The method includes: obtaining a first parameter at the outlet of a deaerator and a second parameter at the inlet of a high-pressure heater; determining a third parameter at the inlet of the feedwater pre-pump based on the first parameter and pipe parameters connecting the deaerator and the feedwater pre-pump; determining a fourth parameter at the outlet of the feedwater pre-pump based on the third parameter and the electric drive parameters of the feedwater pre-pump; determining a fifth parameter at the inlet of the feedwater pump based on the fourth parameter and pipe parameters connecting the feedwater pre-pump and the feedwater pump; determining a sixth parameter at the outlet of the feedwater pump based on the second parameter and pipe parameters connecting the high-pressure heater and the feedwater pump; and determining the operating efficiency of the feedwater pump based on the fifth and sixth parameters. The apparatus is used to perform the above method. This invention can provide a calculation basis for the operating efficiency of a single feedwater pump.

Description

Technical Field

[0001] This invention relates to the field of generator set thermal technology, specifically to a method and apparatus for determining the working efficiency of a water pump in a water supply system. Background Technology

[0002] Feedwater pumps are crucial large-scale equipment in thermal power plants, and can be classified into steam-driven feedwater pumps and electric feedwater pumps according to their drive method. Feedwater pump efficiency is essential for determining economic indicators such as heat consumption and coal consumption in thermal power plants, as well as for analyzing and diagnosing their operating characteristics. While the temperature variations of the feedwater at the inlet and outlet of the pump are small, they significantly impact its efficiency. Currently, the efficiency of steam-driven feedwater pumps can only be calculated due to the inability to accurately measure the exhaust enthalpy and flow rate of the driving steam turbine. Summary of the Invention

[0003] To address the problems in the prior art, embodiments of the present invention provide a method and apparatus for determining the working efficiency of a water pump in a water supply system, which can at least partially solve the problems existing in the prior art.

[0004] On one hand, the present invention provides a method for determining the working efficiency of a water supply pump in a water supply system, wherein the water supply system includes a deaerator, a pre-pump, a water supply pump, and a high-pressure heater connected in sequence; the method includes:

[0005] Obtain the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet;

[0006] The third parameter at the inlet of the feed water pre-pump is determined based on the first parameter at the outlet of the deaerator and the pipe parameters of the pipe connecting the deaerator and the feed water pre-pump.

[0007] The fourth parameter at the outlet of the water supply pre-pump is determined based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameters of the water supply pre-pump.

[0008] The fifth parameter at the inlet of the water supply pump is determined based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump.

[0009] Based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump, the sixth parameter at the outlet of the water pump is determined.

[0010] The operating efficiency of the water supply pump is determined based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

[0011] Optionally, the first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate;

[0012] The process of obtaining the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet includes:

[0013] Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period.

[0014] Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period.

[0015] Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

[0016] Optionally, the third parameter includes feedwater pressure and feedwater enthalpy;

[0017] The step of determining the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the deaerator outlet and the second parameter of the pipeline connecting the deaerator and the feedwater pre-pump includes:

[0018] A numerical simulation model of the pipeline connecting the deaerator and the feedwater pre-pump is established based on the size and shape parameters of the pipeline.

[0019] The average feedwater temperature and average feedwater pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average feedwater flow rate are input into the numerical simulation calculation model to obtain the feedwater pressure and feedwater enthalpy at the inlet of the feedwater pre-pump.

[0020] Optionally, the fourth parameter includes feedwater pressure and feedwater enthalpy;

[0021] The step of determining the fourth parameter at the outlet of the feedwater pre-pump based on the third parameter at the inlet of the feedwater pre-pump and the electric drive parameters of the feedwater pre-pump includes:

[0022] The head of the feedwater pre-pump is obtained based on the average feedwater flow rate and the flow-head curve of the feedwater pre-pump.

[0023] The water pressure at the outlet of the water supply pre-pump is obtained based on the water supply pressure at the inlet of the water supply pre-pump and the head.

[0024] The enthalpy of the water supply at the outlet of the water supply pre-pump is determined based on the output power of the drive motor of the water supply pre-pump within the preset time period, the average water supply flow rate, and the water supply enthalpy at the inlet of the water supply pre-pump.

[0025] Optionally, the fifth parameter includes water pressure, water specific volume, water enthalpy, and water velocity;

[0026] The step of determining the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump includes:

[0027] A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump.

[0028] The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, enthalpy of water supply, and water velocity at the inlet of the water supply pump.

[0029] Optionally, the sixth parameter includes water pressure, water specific volume, water enthalpy, and water velocity;

[0030] The step of determining the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump includes:

[0031] A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline.

[0032] The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the outlet of the water pump.

[0033] Optionally, determining the operating efficiency of the water supply pump based on the fifth parameter at the inlet and the sixth parameter at the outlet includes:

[0034] The working efficiency of the water supply pump is determined based on the water supply pressure, enthalpy, velocity, and specific volume of water at the inlet of the water supply pump, and the water supply pressure, enthalpy, velocity, and specific volume of water at the outlet of the water supply pump.

[0035] On the other hand, the present invention provides a device for determining the working efficiency of a water supply pump in a water supply system, wherein the water supply system includes a deaerator, a pre-pump, a water supply pump, and a high-pressure heater connected in sequence; the device includes:

[0036] The acquisition module is used to acquire the first parameter at the outlet of the deaerator and the second parameter at the inlet of the high-pressure heater.

[0037] The first determining module is used to determine the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the outlet of the deaerator and the pipe parameter of the pipe connecting the deaerator and the feedwater pre-pump.

[0038] The second determining module is used to determine the fourth parameter at the outlet of the water supply pre-pump based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameter of the water supply pre-pump.

[0039] The third determining module is used to determine the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump.

[0040] The fourth determining module is used to determine the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump.

[0041] The fifth determining module is used to determine the working efficiency of the water supply pump based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

[0042] Optionally, the first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate;

[0043] The acquisition module is specifically used for:

[0044] Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period.

[0045] Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period.

[0046] Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

[0047] Optionally, the third parameter includes feedwater pressure and feedwater enthalpy;

[0048] The first determining module is specifically used for:

[0049] A numerical simulation model of the pipeline connecting the deaerator and the feedwater pre-pump is established based on the size and shape parameters of the pipeline.

[0050] The average feedwater temperature and average feedwater pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average feedwater flow rate are input into the numerical simulation calculation model to obtain the feedwater pressure and feedwater enthalpy at the inlet of the feedwater pre-pump.

[0051] Optionally, the fourth parameter includes feedwater pressure and feedwater enthalpy;

[0052] The second determining module is specifically used for:

[0053] The head of the feedwater pre-pump is obtained based on the average feedwater flow rate and the flow-head curve of the feedwater pre-pump.

[0054] The water pressure at the outlet of the water supply pre-pump is obtained based on the water supply pressure at the inlet of the water supply pre-pump and the head.

[0055] The enthalpy of the water supply at the outlet of the water supply pre-pump is determined based on the output power of the drive motor of the water supply pre-pump within the preset time period, the average water supply flow rate, and the water supply enthalpy at the inlet of the water supply pre-pump.

[0056] Optionally, the fifth parameter includes water pressure, water specific volume, water enthalpy, and water velocity;

[0057] The third determining module is specifically used for:

[0058] A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump.

[0059] The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, enthalpy of water supply, and water velocity at the inlet of the water supply pump.

[0060] Optionally, the sixth parameter includes water pressure, water specific volume, water enthalpy, and water velocity;

[0061] The fourth determining module is specifically used for:

[0062] A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline.

[0063] The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the outlet of the water pump.

[0064] Optionally, the fifth determining module is specifically used for:

[0065] The working efficiency of the water supply pump is determined based on the water supply pressure, enthalpy, velocity, and specific volume of water at the inlet of the water supply pump, and the water supply pressure, enthalpy, velocity, and specific volume of water at the outlet of the water supply pump.

[0066] In another aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for determining the working efficiency of a water pump in a water supply system as described in any of the above embodiments.

[0067] In another aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining the working efficiency of a water pump in a water supply system as described in any of the above embodiments.

[0068] The method and apparatus for determining the working efficiency of a water supply pump in a water supply system provided in this invention measure water supply parameters at relatively precise measurement points before and after the water supply pump. Then, based on these parameters, the water supply parameters at the pump inlet and outlet are calculated. Finally, the working efficiency of a single water supply pump is calculated based on the calculated inlet and outlet parameters. This method measures fewer parameters, has low measurement costs, and minimizes the impact of measurement errors on the results, thereby improving the accuracy of the calculated water supply pump working efficiency. Furthermore, this method is effective for calculating the working efficiency of both steam-driven and electric water supply pumps. Attached Figure Description

[0069] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0070] Figure 1 This is a flowchart illustrating a method for determining the working efficiency of a water supply pump in a water supply system according to an embodiment of the present invention.

[0071] Figure 2 This is a partial structural schematic diagram of a water supply system provided in an embodiment of the present invention.

[0072] Figure 3 This is a partial flowchart illustrating a method for determining the working efficiency of a water pump in a water supply system according to an embodiment of the present invention.

[0073] Figure 4 This is a partial flowchart illustrating a method for determining the working efficiency of a water pump in a water supply system according to an embodiment of the present invention.

[0074] Figure 5 This is a schematic diagram of the structure of a device for determining the working efficiency of a water supply pump in a water supply system according to an embodiment of the present invention.

[0075] Figure 6 This is a schematic diagram of the physical structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0077] The execution subject of the method for determining the working efficiency of the water supply pump in the water supply system provided in this embodiment of the invention includes, but is not limited to, a computer.

[0078] Figure 1 This is a flowchart illustrating the method for determining the working efficiency of a water pump in a water supply system provided in an embodiment of the present invention. Figure 1 As shown in the embodiment of the present invention, the method for determining the working efficiency of a water pump in a water supply system is as follows: Figure 2 As shown, the water supply system includes a deaerator 1, a feedwater pre-pump 2, a feedwater pump 4 (electric or pneumatic), and a high-pressure heater 5 connected in sequence; the method includes:

[0079] S101. Obtain the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet;

[0080] In step S101, as follows Figure 2 As shown, a measuring point can be set at the outlet of deaerator 1 to measure the first parameter at the outlet of deaerator 1; similarly, a measuring point can be set at the inlet of high-pressure heater 5 to measure the second parameter at the inlet of high-pressure heater 5. The first and second parameters are parameters related to the feedwater, such as feedwater temperature, feedwater pressure, and feedwater flow rate. High-pressure heater 5 can be the No. 3 high-pressure heater in the feedwater system.

[0081] S102. Determine the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the outlet of the deaerator and the pipe parameters of the pipe connecting the deaerator and the feedwater pre-pump.

[0082] In step S102, as Figure 2 As shown, the deaerator 1 and the feedwater pre-pump 2 are connected by a pipeline. The pipeline parameters, such as the pipe's dimensions (diameter, length), shape (elbows, reducers, etc.), and surface temperature, can be obtained through measurement or other methods. The first parameter measured at the outlet of the deaerator 1 is relatively accurate. Therefore, based on the first parameter at that location and the pipeline parameters, the third parameter at the inlet of the feedwater pre-pump 2 can be calculated. This third parameter is also related to the feedwater, such as feedwater temperature, feedwater pressure, and feedwater flow rate.

[0083] S103. Determine the fourth parameter at the outlet of the water supply pre-pump based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameter of the water supply pre-pump.

[0084] In step S103, as Figure 2 As shown, the water supply pre-pump 2 is driven by the drive motor 3. After obtaining the third parameter at the inlet of the water supply pre-pump 2, the fourth parameter (water supply parameter) at the outlet of the water supply pre-pump 2 can be determined based on the third parameter and the electric drive parameters of the water supply pre-pump 2 (such as the voltage and current of the drive motor). Since the length of the pipe between the water supply pre-pump 2 and the water supply pump 4 is relatively short, the water supply parameter at the outlet of the water supply pre-pump 2 can be directly used as the fifth parameter at the inlet of the water supply pump 4, or the fifth parameter can be determined according to the following step S104.

[0085] S104. Determine the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump.

[0086] In step S104, as Figure 2As shown, the water supply pump 4 and the water supply pre-pump 2 are connected by a pipeline. The pipeline parameters, such as the pipe's dimensions (diameter, length), shape (elbows, reducers, etc.), and surface temperature, can be obtained through measurement or other methods. After obtaining the fourth parameter at the outlet of the water supply pre-pump, the fifth parameter (water supply parameter) at the inlet of the water supply pump, such as water supply temperature, water supply pressure, and water supply flow rate, can be calculated based on the fourth parameter and the pipeline parameters.

[0087] S105. Determine the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump.

[0088] In step S105, as Figure 2 As shown, the high-pressure heater 5 and the water pump 4 are connected by a pipeline. The pipeline parameters, such as the pipe's dimensions (diameter, length), shape (elbows, reducers, etc.), and surface temperature, can be obtained through measurement or other methods. The second parameter measured at the inlet of the high-pressure heater 5 is relatively accurate. Therefore, based on the second parameter at that location and the pipeline parameters, the sixth parameter at the outlet of the water pump 4 can be calculated. This sixth parameter is also related to water supply, such as water supply temperature, water supply pressure, and water supply flow rate.

[0089] S106. Determine the working efficiency of the water supply pump based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

[0090] In step S106, after obtaining the water supply parameters at the inlet and outlet of the water supply pump, the working efficiency of the water supply pump can be calculated based on these water supply parameters.

[0091] The method for determining the working efficiency of a water supply pump in a water supply system provided by this invention involves measuring water supply parameters at relatively precise measurement points before and after the water supply pump, then calculating the water supply parameters at the pump inlet and outlet based on these parameters, and finally calculating the working efficiency of a single water supply pump based on the calculated inlet and outlet parameters. This method measures fewer parameters, has low measurement costs, and minimizes the impact of measurement errors on the results, thereby improving the accuracy of the calculated water supply pump working efficiency. Furthermore, this method is effective for calculating the working efficiency of both steam-driven and electric water supply pumps.

[0092] Optionally, the first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate;

[0093] The process of obtaining the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet includes:

[0094] Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period.

[0095] Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period.

[0096] Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

[0097] In this embodiment, as Figure 2 As shown, P1 and T1 are the feedwater pressure and temperature measuring points at the outlet of deaerator 1; P2 and T2 are the feedwater pressure and temperature measuring points at the inlet of feedwater pre-pump 2; P3 and T3 are the feedwater pressure and temperature measuring points at the outlet of feedwater pre-pump 2 (or the inlet of feedwater pump); P4 and T4 are the feedwater pressure and temperature measuring points at the outlet of feedwater pump 4; and P5, T5, and Q are the feedwater pressure, temperature, and flow rate measuring points at the inlet of high-pressure heater 5 (No. 3). Typically, transmitter-type measuring points are installed at P1, T1, and P5, T5, and Q for remote monitoring, while field meters are installed at P2, T2, P3, T3, and P4, T4 to facilitate operators in monitoring equipment operating status.

[0098] The specific steps for obtaining the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet in this example are as follows:

[0099] (1) Replace the transmitters at measuring points P1, T1, P5, T5, and Q with transmitters that meet the requirements of the "Acceptance Test Procedure for Thermal Performance of Steam Turbines" (GB / T8117.2-2008).

[0100] (2) Under the condition of maintaining stable system operation, continuously measure and record the measurements at points P1, T1, P5, T5, and Q for a period of time (usually one hour), and then calculate their arithmetic mean p. 10 t 10 p 50 t 50 , q0.

[0101] Optionally, the third parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity.

[0102] like Figure 3As shown, determining the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the deaerator outlet and the second parameter of the pipeline connecting the deaerator and the feedwater pre-pump includes:

[0103] S1021. Based on the size and shape parameters of the pipeline connecting the deaerator and the feedwater pre-pump, establish a numerical simulation calculation model of the pipeline.

[0104] In step S1021, as Figure 2 As shown, the dimensional parameters (diameter, length) and shape parameters (elbows, reducers, etc.) of the pipe from measuring points P1 and T1 to the inlet of the water supply pre-pump 2 are measured. Based on the measured dimensional and shape parameters of the pipe, a numerical simulation calculation model of the pipe is established using the numerical simulation software Ansys. This model can calculate the temperature t, pressure p, specific volume v, specific enthalpy h, and velocity u of the water supply at any point in the simulation area.

[0105] S1022. Input the average water temperature and average water pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average water flow rate into the numerical simulation calculation model to obtain the water temperature, water pressure, water specific volume, water enthalpy, and water velocity at the inlet of the water pre-pump.

[0106] In step S1022, while measuring the feedwater temperature and pressure at the deaerator outlet and the feedwater temperature, pressure, and flow rate at the high-pressure heater inlet, the surface temperature of the pipe can be continuously measured to obtain the average temperature value t. 01 , will p 10 t 10 ,q0,t 01 The input is given to the calculation model to obtain the feedwater temperature t at the inlet of the feedwater pre-pump. 21 Water supply pressure p 21 Specific volume of water v 21 Enthalpy value of water supply h 21 and water velocity u 21 .

[0107] Optionally, the fourth parameter includes feedwater pressure and feedwater enthalpy;

[0108] like Figure 4 As shown, determining the fourth parameter at the outlet of the feedwater pre-pump based on the third parameter at the inlet of the feedwater pre-pump and the electric drive parameters of the feedwater pre-pump includes:

[0109] S1031. The head of the water supply booster pump is obtained based on the average water supply flow rate and the flow-head curve of the water supply booster pump.

[0110] In step S1031, the head H of the feed water pre-pump is obtained by looking up the flow-head curve of the feed water pre-pump from the manufacturer based on the average feed water flow rate q0.

[0111] S1032. Based on the water supply pressure at the inlet of the water supply pre-pump and the head, the water supply pressure at the outlet of the water supply pre-pump is obtained;

[0112] In step S1032, the water supply pressure p at the outlet of the water supply booster pump is calculated according to the following formula. 31 :

[0113] p 31 =p 21 +ρgH;

[0114] In the formula, ρ represents the density of water; g represents the acceleration due to gravity.

[0115] S1033. Determine the enthalpy value of the water supply at the outlet of the water supply pre-pump based on the output power of the drive motor of the water supply pre-pump within the preset time length, the average water supply flow rate, and the water supply enthalpy value at the inlet of the water supply pre-pump.

[0116] In step S1033, while measuring the water temperature and pressure at the deaerator outlet and the water temperature, pressure and flow rate at the high-pressure heater inlet, the instantaneous values ​​of the voltage U and current I of the drive motor of the water pre-pump can be continuously measured, and then their arithmetic average values ​​U0 and I0 can be calculated.

[0117] The power factor cosψ and mechanical efficiency η of the motor driven by U0, I0 and the feed water pre-pump m The output power W of the water supply booster pump drive motor was calculated using parameters such as:

[0118] W=U0×I0×cosψ×η m ;

[0119] The feedwater enthalpy h at the outlet of the feedwater pre-pump is then calculated using the following formula. 31 :

[0120]

[0121] Optionally, the fifth parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity;

[0122] The step of determining the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump includes:

[0123] A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump.

[0124] The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply temperature, water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the inlet of the water supply pump.

[0125] In this embodiment, the method for establishing a numerical simulation calculation model of the pipeline based on the size and shape parameters of the pipeline connecting the pre-pump and the feed pump is similar to the implementation method of step S1021 above. The method for obtaining the feed water temperature, feed water pressure, specific volume of water, feed water enthalpy and water velocity at the inlet of the feed pump based on the calculation model is similar to the implementation method of step S1022 above, and will not be repeated here.

[0126] Optionally, the sixth parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity;

[0127] The step of determining the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump includes:

[0128] A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline.

[0129] The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply temperature, water supply pressure, water specific volume, water supply enthalpy and water velocity at the outlet of the water pump.

[0130] In this embodiment, the method for establishing the numerical simulation calculation model is similar to the implementation method of step S1021 above. The method for obtaining the water supply temperature, water supply pressure, water specific volume, water supply enthalpy and water velocity at the outlet of the water pump based on the numerical simulation calculation model is similar to the implementation method of step S1022 above, and will not be described again here.

[0131] Optionally, determining the working efficiency of the water supply pump based on the fifth parameter at the inlet and the sixth parameter at the outlet includes: determining the working efficiency of the water supply pump based on the water supply pressure, water supply enthalpy, water velocity, and water specific volume at the inlet and the water supply pressure, water supply enthalpy, water velocity, and water specific volume at the outlet.

[0132] In this embodiment, the data obtained from the previous data simulation calculation is substituted into the following formula:

[0133]

[0134] Among them, E h It is the hydraulic energy per unit mass of fluid, and its calculation formula is as follows:

[0135]

[0136] In the formula, v m It is the average specific volume of the water supply obtained from the above numerical simulation calculation, that is, the average of the specific volume of the water at the inlet of the water supply pump and the specific volume of the water at the outlet.

[0137] u 41 u 51 These are the water velocity at the outlet and the water velocity at the inlet of the water pump, respectively.

[0138] p 41 p 51 These are the water supply pressure at the outlet of the water pump and the water supply pressure at the inlet of the water pump, respectively.

[0139] Z 41 Z 51 These are the elevations of the water pump outlet and inlet, measured on-site.

[0140] g is the acceleration due to gravity, taken as 9.80665 m / s. -2 .

[0141] E m It is the mechanical energy per unit mass of fluid, and its calculation formula is as follows:

[0142]

[0143] In the formula, h 41 h 51 These are the feedwater enthalpy at the outlet and the feedwater enthalpy at the inlet of the feedwater pump, respectively.

[0144] ΔE m This is the energy correction term for the mechanical energy per unit mass of fluid. Its value is relatively small and can be calculated using data provided by the water pump manufacturer or the methods described in "DLT89-2003 Field Test Method for Performance of Large Boiler Feed Pumps". In this example, it is taken as 0.01E. h .

[0145] E x This refers to the energy lost per unit mass of fluid mechanically, specifically the energy not carried away by the liquid between the measured cross-sections. It is calculated based on the heat absorbed by the cooling water in the cooling water pump's lubricating oil or according to data provided by the pump manufacturer; in this example, 0.01E is used.m .

[0146] Figure 5 This is a schematic diagram of the structure of a device for determining the working efficiency of a water supply pump in a water supply system according to an embodiment of the present invention, as shown below. Figure 5 As shown in the embodiment of the present invention, a device for determining the working efficiency of a water supply pump in a water supply system includes a deaerator, a pre-pump, a water supply pump, and a high-pressure heater connected in sequence in the water supply system; the device includes:

[0147] Acquisition module 21 is used to acquire the first parameter at the outlet of the deaerator and the second parameter at the inlet of the high-pressure heater;

[0148] The first determining module 22 is used to determine the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the outlet of the deaerator and the pipe parameter of the pipe connecting the deaerator and the feedwater pre-pump.

[0149] The second determining module 23 is used to determine the fourth parameter at the outlet of the water supply pre-pump based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameter of the water supply pre-pump.

[0150] The third determining module 24 is used to determine the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump.

[0151] The fourth determining module 25 is used to determine the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameter of the pipe connecting the high-pressure heater and the water pump.

[0152] The fifth determining module 26 is used to determine the working efficiency of the water supply pump based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

[0153] The device for determining the working efficiency of a water supply pump in a water supply system provided in this invention measures water supply parameters at relatively precise measurement points before and after the water supply pump. Based on these parameters, it calculates the water supply parameters at the pump inlet and outlet. Finally, it calculates the working efficiency of a single water supply pump based on the calculated inlet and outlet parameters. This method measures fewer parameters, has lower measurement costs, and minimizes the impact of measurement errors on the results, thereby improving the accuracy of the calculated water supply pump working efficiency. Furthermore, this method is effective for calculating the working efficiency of both steam-driven and electric water supply pumps.

[0154] Optionally, the first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate;

[0155] The acquisition module is specifically used for:

[0156] Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period.

[0157] Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period.

[0158] Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

[0159] Optionally, the third parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity.

[0160] The first determining module is specifically used for:

[0161] A numerical simulation model of the pipeline connecting the deaerator and the feedwater pre-pump is established based on the size and shape parameters of the pipeline.

[0162] The average feedwater temperature and pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average feedwater flow rate are input into the numerical simulation calculation model to obtain the feedwater temperature, feedwater pressure, specific volume of water, feedwater enthalpy, and water velocity at the inlet of the feedwater pre-pump.

[0163] Optionally, the fourth parameter includes feedwater pressure and feedwater enthalpy;

[0164] The second determining module is specifically used for:

[0165] The head of the feedwater pre-pump is obtained based on the average feedwater flow rate and the flow-head curve of the feedwater pre-pump.

[0166] The water pressure at the outlet of the water supply pre-pump is obtained based on the water supply pressure at the inlet of the water supply pre-pump and the head.

[0167] The enthalpy of the water supply at the outlet of the water supply pre-pump is determined based on the output power of the drive motor of the water supply pre-pump within the preset time period, the average water supply flow rate, and the water supply enthalpy at the inlet of the water supply pre-pump.

[0168] Optionally, the fifth parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity;

[0169] The third determining module is specifically used for:

[0170] A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump.

[0171] The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply temperature, water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the inlet of the water supply pump.

[0172] Optionally, the sixth parameter includes water temperature, water pressure, water specific volume, water enthalpy, and water velocity;

[0173] The fourth determining module is specifically used for:

[0174] A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline.

[0175] The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply temperature, water supply pressure, water specific volume, water supply enthalpy and water velocity at the outlet of the water pump.

[0176] Optionally, the fifth determining module is specifically used for:

[0177] The working efficiency of the water supply pump is determined based on the water supply pressure, enthalpy, velocity, and specific volume of water at the inlet of the water supply pump, and the water supply pressure, enthalpy, velocity, and specific volume of water at the outlet of the water supply pump.

[0178] The embodiments of the apparatus provided in this invention can be used to execute the processing flow of the above method embodiments. Its functions will not be repeated here, but can be referred to the detailed description of the above method embodiments.

[0179] Figure 6 This is a schematic diagram of the physical structure of an electronic device provided in an embodiment of the present invention, as shown below. Figure 6As shown, the electronic device may include: a processor 301, a communication interface 302, a memory 303, and a communication bus 304, wherein the processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. The processor 301 can call logical instructions in the memory 303 to execute the method described in any of the above embodiments, for example including: obtaining a first parameter at the deaerator outlet and a second parameter at the high-pressure heater inlet; determining a third parameter at the feedwater pre-pump inlet based on the first parameter at the deaerator outlet and the pipe parameters of the pipe connecting the deaerator and the feedwater pre-pump; determining a fourth parameter at the feedwater pre-pump outlet based on the third parameter at the feedwater pre-pump inlet and the electric drive parameters of the feedwater pre-pump; determining a fifth parameter at the feedwater pump inlet based on the fourth parameter at the feedwater pre-pump outlet and the pipe parameters of the pipe connecting the feedwater pre-pump and the feedwater pump; determining a sixth parameter at the feedwater pump outlet based on the second parameter at the high-pressure heater inlet and the pipe parameters of the pipe connecting the high-pressure heater and the feedwater pump; and determining the operating efficiency of the feedwater pump based on the fifth parameter at the feedwater pump inlet and the sixth parameter at the feedwater pump outlet.

[0180] Furthermore, the logical instructions in the aforementioned memory 303 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, 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 steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0181] This embodiment discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the methods provided in the above-described method embodiments, such as: acquiring a first parameter at the deaerator outlet and a second parameter at the high-pressure heater inlet; determining a third parameter at the feedwater pre-pump inlet based on the first parameter at the deaerator outlet and the pipe parameters connecting the deaerator and the feedwater pre-pump; and determining a third parameter based on the feedwater pre-pump inlet. The third parameter at the inlet of the feed water pre-pump and the electric drive parameters of the feed water pre-pump are used to determine the fourth parameter at the outlet of the feed water pre-pump; the fourth parameter at the outlet of the feed water pre-pump and the pipe parameters connecting the feed water pre-pump and the feed water pump are used to determine the fifth parameter at the inlet of the feed water pump; the second parameter at the inlet of the high-pressure heater and the pipe parameters connecting the high-pressure heater and the feed water pump are used to determine the sixth parameter at the outlet of the feed water pump; and the operating efficiency of the feed water pump is determined based on the fifth parameter at the inlet and the sixth parameter at the outlet of the feed water pump.

[0182] This embodiment provides a computer-readable storage medium storing a computer program that causes a computer to execute the methods provided in the above-described method embodiments. For example, the methods include: acquiring a first parameter at the deaerator outlet and a second parameter at the high-pressure heater inlet; determining a third parameter at the feedwater pre-pump inlet based on the first parameter at the deaerator outlet and the pipe parameters connecting the deaerator and the feedwater pre-pump; determining a fourth parameter at the feedwater pre-pump outlet based on the third parameter at the feedwater pre-pump inlet and the electric drive parameters of the feedwater pre-pump; determining a fifth parameter at the feedwater pump inlet based on the fourth parameter at the feedwater pre-pump outlet and the pipe parameters connecting the feedwater pre-pump and the feedwater pump; determining a sixth parameter at the feedwater pump outlet based on the second parameter at the high-pressure heater inlet and the pipe parameters connecting the high-pressure heater and the feedwater pump; and determining the operating efficiency of the feedwater pump based on the fifth parameter at the feedwater pump inlet and the sixth parameter at the feedwater pump outlet.

[0183] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0184] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0185] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0186] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0187] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0188] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for determining the working efficiency of a water supply pump in a water supply system, characterized in that, The water supply system includes a deaerator, a pre-pump, a feedwater pump, and a high-pressure heater connected in sequence; the method includes: Obtain the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet; The third parameter at the inlet of the feed water pre-pump is determined based on the first parameter at the outlet of the deaerator and the pipe parameters of the pipe connecting the deaerator and the feed water pre-pump. The fourth parameter at the outlet of the water supply pre-pump is determined based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameters of the water supply pre-pump. The fifth parameter at the inlet of the water supply pump is determined based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump. Based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump, the sixth parameter at the outlet of the water pump is determined. The operating efficiency of the water supply pump is determined based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

2. The method according to claim 1, characterized in that, The first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate; The process of obtaining the first parameter at the deaerator outlet and the second parameter at the high-pressure heater inlet includes: Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period. Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period. Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

3. The method according to claim 2, characterized in that, The third parameter includes water supply pressure and water supply enthalpy; The step of determining the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the deaerator outlet and the second parameter of the pipeline connecting the deaerator and the feedwater pre-pump includes: A numerical simulation model of the pipeline connecting the deaerator and the feedwater pre-pump is established based on the size and shape parameters of the pipeline. The average feedwater temperature and average feedwater pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average feedwater flow rate are input into the numerical simulation calculation model to obtain the feedwater pressure and feedwater enthalpy at the inlet of the feedwater pre-pump.

4. The method according to claim 3, characterized in that, The fourth parameter includes water supply pressure and water supply enthalpy; The step of determining the fourth parameter at the outlet of the feedwater pre-pump based on the third parameter at the inlet of the feedwater pre-pump and the electric drive parameters of the feedwater pre-pump includes: The head of the feedwater pre-pump is obtained based on the average feedwater flow rate and the flow-head curve of the feedwater pre-pump. The water pressure at the outlet of the water supply pre-pump is obtained based on the water supply pressure at the inlet of the water supply pre-pump and the head. The enthalpy of the water supply at the outlet of the water supply pre-pump is determined based on the output power of the drive motor of the water supply pre-pump within the preset time period, the average water supply flow rate, and the water supply enthalpy at the inlet of the water supply pre-pump.

5. The method according to claim 4, characterized in that, The fifth parameter includes water supply pressure, water specific volume, water supply enthalpy, and water velocity; The step of determining the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump includes: A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump. The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, enthalpy of water supply, and water velocity at the inlet of the water supply pump.

6. The method according to claim 5, characterized in that, The sixth parameter includes water supply pressure, water specific volume, water supply enthalpy, and water velocity; The step of determining the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump includes: A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline. The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the outlet of the water pump.

7. The method according to claim 6, characterized in that, The step of determining the operating efficiency of the water supply pump based on the fifth parameter at the inlet and the sixth parameter at the outlet includes: The working efficiency of the water supply pump is determined based on the water supply pressure, enthalpy, velocity, and specific volume of water at the inlet of the water supply pump, and the water supply pressure, enthalpy, velocity, and specific volume of water at the outlet of the water supply pump.

8. A device for determining the working efficiency of a water supply pump in a water supply system, characterized in that, The water supply system includes a deaerator, a pre-pump, a water supply pump, and a high-pressure heater connected in sequence; the device includes: The acquisition module is used to acquire the first parameter at the outlet of the deaerator and the second parameter at the inlet of the high-pressure heater. The first determining module is used to determine the third parameter at the inlet of the feedwater pre-pump based on the first parameter at the outlet of the deaerator and the pipe parameter of the pipe connecting the deaerator and the feedwater pre-pump. The second determining module is used to determine the fourth parameter at the outlet of the water supply pre-pump based on the third parameter at the inlet of the water supply pre-pump and the electric drive parameter of the water supply pre-pump. The third determining module is used to determine the fifth parameter at the inlet of the water supply pump based on the fourth parameter at the outlet of the water supply pre-pump and the pipe parameters of the pipe connecting the water supply pre-pump and the water supply pump. The fourth determining module is used to determine the sixth parameter at the outlet of the water pump based on the second parameter at the inlet of the high-pressure heater and the pipe parameters of the pipe connecting the high-pressure heater and the water pump. The fifth determining module is used to determine the working efficiency of the water supply pump based on the fifth parameter at the inlet of the water supply pump and the sixth parameter at the outlet of the water supply pump.

9. The apparatus according to claim 8, characterized in that, The first parameter includes water supply temperature and water supply pressure, and the second parameter includes water supply temperature, water supply pressure, and water supply flow rate; The acquisition module is specifically used for: Under the condition that the water supply system is operating stably, the water supply temperature and pressure at the deaerator outlet and the water supply temperature, pressure and flow rate at the high-pressure heater inlet are continuously measured within a preset time period. Based on the water temperature and pressure at the outlet of the deaerator measured within the preset time period, calculate the average water temperature and average water pressure at the outlet of the deaerator within the preset time period. Based on the water supply temperature, water supply pressure, and water supply flow rate measured at the inlet of the high-pressure heater within the preset time period, the average water supply temperature, average water supply pressure, and average water supply flow rate at the inlet of the high-pressure heater within the preset time period are calculated.

10. The apparatus according to claim 9, characterized in that, The third parameter includes water supply pressure and water supply enthalpy; The first determining module is specifically used for: A numerical simulation model of the pipeline connecting the deaerator and the feedwater pre-pump is established based on the size and shape parameters of the pipeline. The average feedwater temperature and average feedwater pressure at the outlet of the deaerator within the preset time, the surface temperature of the pipeline within the preset time, and the average feedwater flow rate are input into the numerical simulation calculation model to obtain the feedwater pressure and feedwater enthalpy at the inlet of the feedwater pre-pump.

11. The apparatus according to claim 10, characterized in that, The fourth parameter includes water supply pressure and water supply enthalpy; The second determining module is specifically used for: The head of the feedwater pre-pump is obtained based on the average feedwater flow rate and the flow-head curve of the feedwater pre-pump. The water pressure at the outlet of the water supply pre-pump is obtained based on the water supply pressure at the inlet of the water supply pre-pump and the head. The enthalpy of the water supply at the outlet of the water supply pre-pump is determined based on the output power of the drive motor of the water supply pre-pump within the preset time period, the average water supply flow rate, and the water supply enthalpy at the inlet of the water supply pre-pump.

12. The apparatus according to claim 11, characterized in that, The fifth parameter includes water supply pressure, water specific volume, water supply enthalpy, and water velocity; The third determining module is specifically used for: A numerical simulation model of the pipeline is established based on the size and shape parameters of the pipeline connecting the water supply pre-pump and the water supply pump. The enthalpy and pressure of the water supply at the outlet of the water supply pre-pump, the surface temperature of the pipeline within the preset time, and the average water supply flow rate are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, enthalpy of water supply, and water velocity at the inlet of the water supply pump.

13. The apparatus according to claim 12, characterized in that, The sixth parameter includes water supply pressure, water specific volume, water supply enthalpy, and water velocity; The fourth determining module is specifically used for: A numerical simulation model of the pipeline connecting the high-pressure heater and the water pump is established based on the size and shape parameters of the pipeline. The average water supply temperature, average water supply pressure, average water supply flow rate at the inlet of the high-pressure heater within the preset time, and the surface temperature of the pipe within the preset time are input into the numerical simulation calculation model to obtain the water supply pressure, specific volume of water, water supply enthalpy, and water velocity at the outlet of the water pump.

14. The apparatus according to claim 13, characterized in that, The fifth determining module is specifically used for: The working efficiency of the water supply pump is determined based on the water supply pressure, enthalpy, velocity, and specific volume of water at the inlet of the water supply pump, and the water supply pressure, enthalpy, velocity, and specific volume of water at the outlet of the water supply pump.

15. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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