A method and device for determining a condenser maintenance strategy and an electronic device

Abstract

The application provides a method and device for determining a condenser maintenance strategy and electronic equipment. The method comprises: obtaining exhaust steam data and condensate data, fan data and heat exchange area of a condenser of a steam turbine; the exhaust steam data comprises a temperature after heat exchange of final-stage exhaust steam and an initial temperature of the final-stage exhaust steam; determining a steam heat release amount of the steam turbine based on the exhaust steam data and the condensate data of the steam turbine; determining a heat exchange temperature difference of the condenser based on the steam heat release amount, the fan data, the temperature after heat exchange of the final-stage exhaust steam and the initial temperature of the final-stage exhaust steam; determining an overall heat exchange coefficient based on the steam heat release amount, the heat exchange temperature difference and the heat exchange area; and determining a maintenance strategy of the condenser based on the overall heat exchange coefficient. The application can determine a reasonable condenser maintenance strategy according to the operation condition of an air-cooled thermal power generating unit, and ensure normal operation of the air-cooled thermal power generating unit.

Description

Technical Field

[0001] This invention relates to the field of thermal power generation technology, and in particular to a method, apparatus and electronic equipment for determining a condenser maintenance strategy. Background Technology

[0002] With the rapid development of my country's economy and the continuous acceleration of urbanization, air-cooled thermal power units have been widely used in the cold northern regions due to their significant water-saving performance.

[0003] However, the back pressure of air-cooled thermal power units is easily affected by environmental factors. During the high-temperature period in summer, the units face the risk of triggering unit shutdown protection due to excessive back pressure, and during the low-temperature period in winter, they face the risk of condenser tube bundle freezing and cracking. Therefore, it is necessary to develop maintenance strategies for the condensers in air-cooled thermal power units to ensure the normal operation of air-cooled thermal power units. Summary of the Invention

[0004] This invention provides a method, apparatus, and electronic device for determining condenser maintenance strategies, which can determine reasonable condenser maintenance strategies based on the operating conditions of air-cooled thermal power units, ensuring the normal operation of air-cooled thermal power units.

[0005] In a first aspect, the present invention provides a method for determining a condenser maintenance strategy, characterized by comprising: acquiring turbine exhaust steam data and condensate data, fan data, and the heat exchange area of ​​the condenser; the exhaust steam data including the temperature after heat exchange of the final stage exhaust steam, the initial temperature of the final stage exhaust steam, the exhaust steam pressure, the exhaust steam dryness fraction, and the exhaust steam flow rate; the condensate water data including the condensate pressure and the condensate temperature; and the fan data including the rated air volume, rated frequency, actual frequency, and inlet air temperature of the fan; determining the steam heat release of the turbine based on the turbine exhaust steam data and condensate water data; determining the heat exchange temperature difference of the condenser based on the steam heat release, fan data, the temperature after heat exchange of the final stage exhaust steam, and the initial temperature of the final stage exhaust steam; determining the overall heat transfer coefficient based on the steam heat release, the heat transfer temperature difference, and the heat transfer area; and determining the condenser maintenance strategy based on the overall heat transfer coefficient.

[0006] This invention provides a method for determining a condenser maintenance strategy. By acquiring operating data from the turbine, fan, and condenser, and based on this data, the steam heat release and the condenser heat exchange temperature difference are determined, ultimately establishing the overall heat transfer coefficient of the air-cooled system. Based on this overall heat transfer coefficient, a condenser maintenance strategy is determined. This strategy comprehensively considers the operating conditions of the air-cooled thermal power unit, resulting in a more reasonable maintenance strategy and ensuring the normal operation of the air-cooled thermal power unit.

[0007] In one possible implementation, the steam heat release of the turbine is determined based on the turbine's exhaust steam data and condensate data, including: determining the exhaust steam enthalpy based on the exhaust steam pressure and exhaust steam dryness fraction; determining the condensate enthalpy based on the condensate pressure and condensate temperature; and determining the steam heat release based on the exhaust steam enthalpy, condensate enthalpy, and exhaust steam flow rate.

[0008] In one possible implementation, the heat release of steam is determined based on the exhaust steam enthalpy, the condensate enthalpy, and the exhaust steam flow rate, including: determining the heat release of steam based on the following formula;

[0009] Q n =G m ×(h n -h sn );

[0010] Among them, Q n For the heat released by steam, G m For exhaust steam flow rate, h n h represents the exhaust enthalpy. sn This is the enthalpy of condensate.

[0011] In one possible implementation, the heat exchange temperature difference of the condenser is determined based on the steam heat release, fan data, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam. This includes: determining the actual air volume of the fan based on the rated air volume, rated frequency, and actual frequency of the fan; determining the outlet air temperature of the fan based on the steam heat release, the actual air volume of the fan, and the inlet air temperature; and determining the heat exchange temperature difference based on the inlet air temperature, outlet air temperature, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam.

[0012] In one possible implementation, the heat exchange temperature difference is determined based on the inlet air temperature, the outlet air temperature, the temperature of the exhaust steam after heat exchange in the last stage, and the initial temperature of the exhaust steam in the last stage, including: determining the heat exchange temperature difference based on the following formula;

[0013]

[0014] Where Δt is the heat exchange temperature difference, t a2 t represents the outlet air temperature. a1 T1 is the inlet air temperature, T2 is the initial temperature of the final stage exhaust steam, and T2 is the temperature of the final stage exhaust steam after heat exchange.

[0015] In one possible implementation, the overall heat transfer coefficient is determined based on the steam heat release, the heat exchange temperature difference, and the heat exchange area of ​​the condenser, including: determining the overall heat transfer coefficient based on the following formula;

[0016] Q n =Q a =KAΔt;

[0017] Among them, Q n Q is the heat released by steam. a The heat absorbed by the cooling air is K, which is the overall heat transfer coefficient, A is the heat transfer area, and Δt is the heat transfer temperature difference.

[0018] In one possible implementation, the maintenance strategy for the condenser is determined based on the overall heat transfer coefficient, including: recording the overall heat transfer coefficient of the air-cooled island for n cycles over a certain period, where n≥3; if the overall heat transfer coefficient is less than a first threshold and gradually decreases, the maintenance strategy for the condenser is to flush the condenser pipes; if the overall heat transfer coefficient is greater than a second threshold and gradually increases, the maintenance strategy for the condenser is to shut down the fan and output a prompt message to prompt the implementation of antifreeze measures; wherein the first threshold is less than the second threshold.

[0019] Secondly, embodiments of the present invention provide a device for determining a condenser maintenance strategy, comprising: a communication module for acquiring turbine exhaust steam data, condensate data, fan data, and the heat exchange area of ​​the condenser; the exhaust steam data includes the temperature after heat exchange of the final stage exhaust steam, the initial temperature of the final stage exhaust steam, the exhaust steam pressure, the exhaust steam dryness fraction, and the exhaust steam flow rate; the condensate data includes the condensate pressure and the condensate temperature; and the fan data includes the rated air volume, rated frequency, actual frequency, and inlet air temperature of the fan; and a processing module for determining the steam heat release of the turbine based on the turbine exhaust steam data and condensate data; determining the heat exchange temperature difference of the condenser based on the steam heat release, fan data, the temperature after heat exchange of the final stage exhaust steam, and the initial temperature of the final stage exhaust steam; determining the overall heat transfer coefficient based on the steam heat release, the heat exchange temperature difference, and the heat transfer area; and determining the condenser maintenance strategy based on the overall heat transfer coefficient.

[0020] In one possible implementation, the processing module is specifically used to determine the enthalpy of the exhaust steam based on the exhaust steam pressure and exhaust steam dryness; to determine the enthalpy of the condensate based on the condensate pressure and condensate temperature; and to determine the heat release of the steam based on the exhaust steam enthalpy, the enthalpy of the condensate, and the exhaust steam flow rate.

[0021] In one possible implementation, the processing module is specifically used to determine the heat release of the steam based on the following formula;

[0022] Q n =G m ×(h n -h sn );

[0023] Among them, Q n For the heat released by steam, G m For exhaust steam flow rate, h n h represents the exhaust enthalpy. sn This is the enthalpy of condensate.

[0024] In one possible implementation, the processing module is specifically used to determine the actual air volume of the fan based on the fan's rated air volume, rated frequency, and actual frequency; to determine the fan's outlet air temperature based on the steam heat release, the fan's actual air volume, and the inlet air temperature; and to determine the heat exchange temperature difference based on the inlet air temperature, the outlet air temperature, the temperature after heat exchange of the final stage exhaust steam, and the initial temperature of the final stage exhaust steam.

[0025] In one possible implementation, the processing module is specifically used to determine the heat exchange temperature difference based on the following formula;

[0026]

[0027] Where Δt is the heat exchange temperature difference, t a2 t represents the outlet air temperature. a1 T1 is the inlet air temperature, T2 is the initial temperature of the final stage exhaust steam, and T2 is the temperature of the final stage exhaust steam after heat exchange.

[0028] In one possible implementation, the processing module is specifically used to determine the overall heat transfer coefficient based on the following formula;

[0029] Q n =Q a =KAΔt;

[0030] Among them, Q n Q is the heat released by steam. a The heat absorbed by the cooling air is K, which is the overall heat transfer coefficient, A is the heat transfer area, and Δt is the heat transfer temperature difference.

[0031] In one possible implementation, the processing module is specifically used to record the overall heat transfer coefficient of the air-cooled island for n cycles within a certain period, where n≥3; if the overall heat transfer coefficient is less than a first threshold and gradually decreases, then the maintenance strategy for the condenser is determined to be flushing the condenser pipes; if the overall heat transfer coefficient is greater than a second threshold and gradually increases, then the maintenance strategy for the condenser is determined to be shutting down the fan and outputting a prompt message to prompt the implementation of antifreeze measures; wherein the first threshold is less than the second threshold.

[0032] Thirdly, embodiments of the present invention provide an electronic device, characterized in that the electronic device includes a memory and a processor, the memory storing a computer program, and the processor being configured to call and run the computer program stored in the memory to perform the steps of the method as described in the first aspect and any possible implementation thereof.

[0033] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, characterized in that, when executed by a processor, the computer program implements the steps of the method as described in the first aspect and any possible implementation thereof.

[0034] The technical effects of any of the implementation methods in the second to fourth aspects mentioned above can be found in the technical effects of the corresponding implementation method in the first aspect, and will not be repeated here. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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.

[0036] Figure 1 This is a flowchart illustrating a method for determining a condenser maintenance strategy according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of a device for determining a condenser maintenance strategy according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0039] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0040] In the description of this invention, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" and "more than one" refer to two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0041] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0042] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the steps or modules listed, but may optionally include other steps or modules not listed, or may optionally include other steps or modules inherent to such process, method, product, or device.

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings and specific embodiments.

[0044] As described in the background section, there is currently a need to develop maintenance strategies for the condensers in air-cooled thermal power units in order to ensure the normal operation of these units.

[0045] To solve the above technical problems, such as Figure 1 As shown, this embodiment of the invention provides a method for determining a condenser maintenance strategy. The method is executed by a device for determining a condenser maintenance strategy, and includes steps S101-S103.

[0046] S101. Obtain the exhaust steam and condensate data of the steam turbine, the fan data, and the heat exchange area of ​​the condenser.

[0047] In some embodiments, the turbine exhaust data includes the temperature of the last-stage exhaust after heat exchange, the initial temperature of the last-stage exhaust, the exhaust pressure, the exhaust dryness, and the exhaust flow rate.

[0048] In some embodiments, condensate data includes condensate pressure and condensate temperature.

[0049] In some embodiments, fan data includes the fan's rated air volume, rated frequency, actual frequency, and inlet air temperature.

[0050] S102. Based on the exhaust steam data and condensate data of the steam turbine, determine the steam heat release of the steam turbine.

[0051] As one possible implementation, the determining device can determine the steam heat release of the steam turbine based on the following steps.

[0052] S1021. Determine the exhaust enthalpy value based on exhaust pressure and exhaust dryness.

[0053] S1022. Determine the enthalpy of condensate based on condensate pressure and condensate temperature.

[0054] S1023. Determine the heat release of steam based on the exhaust steam enthalpy, condensate enthalpy, and exhaust steam flow rate.

[0055] For example, the determining device can determine the heat release of steam based on the following formula.

[0056] Q n =G m ×(h n -h sn );

[0057] Among them, Q n For the heat released by steam, G m For exhaust steam flow rate, h n h represents the exhaust enthalpy. sn This is the enthalpy of condensate.

[0058] S103. Based on the steam heat release, fan data, temperature after heat exchange of the final stage exhaust steam and the initial temperature of the final stage exhaust steam, determine the heat exchange temperature difference of the condenser.

[0059] As one possible implementation, the determination device can determine the heat exchange temperature difference of the condenser based on the following steps.

[0060] S1031. Determine the actual air volume of the fan based on its rated air volume, rated frequency, and actual frequency.

[0061] S1032. Determine the outlet air temperature of the fan based on the steam heat release, the actual air volume of the fan, and the inlet air temperature.

[0062] S1033. Determine the heat exchange temperature difference based on the inlet air temperature, outlet air temperature, temperature after heat exchange of the final stage exhaust steam, and initial temperature of the final stage exhaust steam.

[0063] For example, the determining device can determine the heat exchange temperature difference based on the following formula;

[0064]

[0065] Where Δt is the heat exchange temperature difference, t a2 t represents the outlet air temperature. a1 T1 is the inlet air temperature, T2 is the initial temperature of the final stage exhaust steam, and T2 is the temperature of the final stage exhaust steam after heat exchange.

[0066] S104. Based on the steam heat release, heat exchange temperature difference, and heat exchange area, determine the overall heat transfer coefficient; and based on the overall heat transfer coefficient, determine the maintenance strategy for the condenser.

[0067] As one possible implementation, the overall heat transfer coefficient can be determined based on the following formula;

[0068] Q n =Q a =KAΔt;

[0069] Among them, Q n Q is the heat released by steam. a The heat absorbed by the cooling air is K, which is the overall heat transfer coefficient, A is the heat transfer area, and Δt is the heat transfer temperature difference.

[0070] As one possible implementation, the device can determine the maintenance strategy for the condenser through the following steps.

[0071] A1. Record the overall heat transfer coefficient of the air-cooled island for n cycles within a certain period, where n≥3;

[0072] A2. If the overall heat transfer coefficient is less than the first threshold and gradually decreases, then the maintenance strategy for the condenser is to flush the condenser pipes.

[0073] A3. If the overall heat transfer coefficient is greater than the second threshold and gradually increases, the maintenance strategy for the condenser is to shut down the fan and output a prompt message to remind the user to take antifreeze measures.

[0074] The first threshold is less than the second threshold.

[0075] This invention provides a method for determining a condenser maintenance strategy. By acquiring operating data from the turbine, fan, and condenser, and based on this data, the steam heat release and the condenser heat exchange temperature difference are determined, ultimately establishing the overall heat transfer coefficient of the air-cooled system. Based on this overall heat transfer coefficient, a condenser maintenance strategy is determined. This strategy comprehensively considers the operating conditions of the air-cooled thermal power unit, resulting in a more reasonable maintenance strategy and ensuring the normal operation of the air-cooled thermal power unit.

[0076] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0077] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.

[0078] Figure 2 A schematic diagram of a device for determining a condenser maintenance strategy according to an embodiment of the present invention is shown. The device 200 includes a communication module 201 and a processing module 202.

[0079] The communication module 201 is used to acquire exhaust steam data and condensate data of the steam turbine, fan data, and heat exchange area of ​​the condenser. The exhaust steam data includes the temperature of the last stage exhaust steam after heat exchange, the initial temperature of the last stage exhaust steam, the exhaust steam pressure, the exhaust steam dryness, and the exhaust steam flow rate. The condensate data includes the condensate pressure and the condensate temperature. The fan data includes the rated air volume, rated frequency, actual frequency, and inlet air temperature of the fan.

[0080] The processing module 202 is used to determine the steam heat release of the steam turbine based on the exhaust steam data and condensate data of the steam turbine; to determine the heat exchange temperature difference of the condenser based on the steam heat release, fan data, the temperature after heat exchange of the last stage exhaust steam and the initial temperature of the last stage exhaust steam; to determine the overall heat transfer coefficient based on the steam heat release, heat exchange temperature difference and heat exchange area; and to determine the maintenance strategy of the condenser based on the overall heat transfer coefficient.

[0081] In one possible implementation, the processing module 202 is specifically used to determine the enthalpy of the exhaust steam based on the exhaust steam pressure and exhaust steam dryness; to determine the enthalpy of the condensate based on the condensate pressure and condensate temperature; and to determine the heat release of the steam based on the exhaust steam enthalpy, the enthalpy of the condensate, and the exhaust steam flow rate.

[0082] In one possible implementation, the processing module 202 is specifically used to determine the heat release of steam based on the following formula;

[0083] Q n =G m ×(h n -h sn );

[0084] Among them, Q n For the heat released by steam, G m For exhaust steam flow rate, h n h represents the exhaust enthalpy. sn This is the enthalpy of condensate.

[0085] In one possible implementation, the processing module 202 is specifically used to determine the actual air volume of the fan based on the rated air volume, rated frequency and actual frequency of the fan; to determine the outlet air temperature of the fan based on the steam heat release, the actual air volume of the fan and the inlet air temperature; and to determine the heat exchange temperature difference based on the inlet air temperature, the outlet air temperature, the temperature after heat exchange of the final stage exhaust steam and the initial temperature of the final stage exhaust steam.

[0086] In one possible implementation, the processing module 202 is specifically used to determine the heat exchange temperature difference based on the following formula;

[0087]

[0088] Where Δt is the heat exchange temperature difference, t a2 t represents the outlet air temperature. a1T1 is the inlet air temperature, T2 is the initial temperature of the final stage exhaust steam, and T2 is the temperature of the final stage exhaust steam after heat exchange.

[0089] In one possible implementation, the processing module 202 is specifically used to determine the overall heat transfer coefficient based on the following formula;

[0090] Q n =Q a =KAΔt;

[0091] Among them, Q n Q is the heat released by steam. a The heat absorbed by the cooling air is K, which is the overall heat transfer coefficient, A is the heat transfer area, and Δt is the heat transfer temperature difference.

[0092] In one possible implementation, the processing module 202 is specifically used to record the overall heat transfer coefficient of the air-cooled island for n cycles within a certain period, where n≥3; if the overall heat transfer coefficient is less than a first threshold and gradually decreases, then the maintenance strategy for the condenser is determined to be flushing the condenser pipes; if the overall heat transfer coefficient is greater than a second threshold and gradually increases, then the maintenance strategy for the condenser is determined to be shutting down the fan and outputting a prompt message to prompt the implementation of antifreeze measures; wherein the first threshold is less than the second threshold.

[0093] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. For example... Figure 3 As shown, the electronic device 300 of this embodiment includes: a processor 301, a memory 302, and a computer program 303 stored in the memory 302 and executable on the processor 301. When the processor 301 executes the computer program 303, it implements the steps in the above-described method embodiments, for example... Figure 1 Steps 101 to 104 are shown. Alternatively, when the processor 301 executes the computer program 303, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 2 The functions of the communication module 201 and the processing module 202 shown are illustrated.

[0094] For example, the computer program 303 can be divided into one or more modules / units, which are stored in the memory 302 and executed by the processor 301 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 303 in the electronic device 300. For example, the computer program 303 can be divided into... Figure 2 The communication module 201 and the processing module 202 are shown.

[0095] The processor 301 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0096] The memory 302 can be an internal storage unit of the electronic device 300, such as a hard disk or memory of the electronic device 300. The memory 302 can also be an external storage device of the electronic device 300, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD) card, flash card, etc., equipped on the electronic device 300. Furthermore, the memory 302 can include both internal and external storage units of the electronic device 300. The memory 302 is used to store the computer program and other programs and data required by the terminal. The memory 302 can also be used to temporarily store data that has been output or will be output.

[0097] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0099] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0100] In the embodiments provided by this invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0101] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0102] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0103] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0104] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method for determining a condenser maintenance strategy, characterized in that, include: Acquire the exhaust steam and condensate data of the steam turbine, the fan data, and the heat exchange area of ​​the condenser; the exhaust steam data includes the temperature of the last-stage exhaust steam after heat exchange and the initial temperature of the last-stage exhaust steam; the fan data includes the rated air volume, rated frequency, actual frequency, and inlet air temperature of the fan; Based on the exhaust steam data and condensate water data of the steam turbine, the heat release of steam in the steam turbine is determined; The heat exchange temperature difference of the condenser is determined based on the steam heat release, the fan data, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam. This includes: determining the actual air volume of the fan based on the rated air volume, rated frequency, and actual frequency; determining the outlet air temperature of the fan based on the steam heat release, the actual air volume of the fan, and the inlet air temperature; and determining the heat exchange temperature difference based on the inlet air temperature, the outlet air temperature, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam. Based on the steam heat release, the heat exchange temperature difference, and the heat exchange area, the overall heat transfer coefficient is determined; and based on the overall heat transfer coefficient, the maintenance strategy for the condenser is determined, including: recording the overall heat transfer coefficient of the air-cooled island for n cycles within a certain period, where n≥3; if the overall heat transfer coefficient is less than a first threshold and gradually decreases, then the maintenance strategy for the condenser is determined to be flushing the condenser pipes; if the overall heat transfer coefficient is greater than a second threshold and gradually increases, then the maintenance strategy for the condenser is determined to be shutting down the fan and outputting a prompt message to prompt the implementation of antifreeze measures; wherein, the first threshold is less than the second threshold; The step of determining the heat exchange temperature difference based on the inlet air temperature, the outlet air temperature, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam includes: determining the heat exchange temperature difference based on the following formula; ;in, The heat exchange temperature difference, The outlet air temperature is... The inlet air temperature is... The initial temperature of the final stage exhaust steam. The temperature after heat exchange of the final stage exhaust steam is denoted as .

2. The method for determining the condenser maintenance strategy according to claim 1, characterized in that, The exhaust steam data also includes exhaust steam pressure, exhaust steam dryness, and exhaust steam flow rate; the condensate water data includes condensate water pressure and condensate water temperature. The determination of the steam heat release of the steam turbine based on the turbine's exhaust steam data and condensate water data includes: The exhaust enthalpy is determined based on the exhaust pressure and the exhaust dryness. The enthalpy of the condensate is determined based on the condensate pressure and the condensate temperature. The heat release of steam is determined based on the exhaust steam enthalpy, the condensate enthalpy, and the exhaust steam flow rate.

3. The method for determining the condenser maintenance strategy according to claim 2, characterized in that, The determination of the heat release of steam based on the exhaust steam enthalpy, the condensate enthalpy, and the exhaust steam flow rate includes: The heat release of steam is determined based on the following formula; ； in, The heat released by steam The exhaust steam flow rate is... The exhaust enthalpy value is... The enthalpy value of the condensate.

4. The method for determining the condenser maintenance strategy according to claim 1, characterized in that, The determination of the overall heat transfer coefficient based on the steam heat release, the heat exchange temperature difference, and the heat exchange area includes: The overall heat transfer coefficient is determined based on the following formula; ； in, The heat released by the steam, To absorb heat to cool the air, The overall heat transfer coefficient is... The heat exchange area is... The heat exchange temperature difference is mentioned.

5. A device for determining a condenser maintenance strategy, characterized in that, include: The communication module is used to acquire exhaust steam data and condensate data of the steam turbine, fan data, and heat exchange area of ​​the condenser; the exhaust steam data includes the temperature of the last-stage exhaust steam after heat exchange and the initial temperature of the last-stage exhaust steam; the fan data includes the rated air volume, rated frequency, actual frequency, and inlet air temperature of the fan. The processing module is used to determine the steam heat release of the steam turbine based on the exhaust steam data and condensate data of the steam turbine; to determine the heat exchange temperature difference of the condenser based on the steam heat release, the fan data, the temperature after heat exchange of the last-stage exhaust steam and the initial temperature of the last-stage exhaust steam; to determine the overall heat transfer coefficient based on the steam heat release, the heat exchange temperature difference and the heat exchange area; and to determine the maintenance strategy of the condenser based on the overall heat transfer coefficient. The processing module is specifically used to determine the actual air volume of the fan based on the rated air volume, rated frequency, and actual frequency of the fan; and to determine the outlet air temperature of the fan based on the steam heat release, the actual air volume of the fan, and the inlet air temperature. The heat exchange temperature difference is determined based on the inlet air temperature, the outlet air temperature, the temperature of the final stage exhaust steam after heat exchange, and the initial temperature of the final stage exhaust steam. The processing module is specifically used to record the overall heat transfer coefficient of the air-cooled island for n cycles within a certain period, where n≥3; if the overall heat transfer coefficient is less than a first threshold and gradually decreases, the maintenance strategy for the condenser is determined to be flushing the condenser pipes; if the overall heat transfer coefficient is greater than a second threshold and gradually increases, the maintenance strategy for the condenser is determined to be shutting down the fan and outputting a prompt message to prompt the implementation of antifreeze measures; wherein the first threshold is less than the second threshold. The processing module is specifically used to determine the heat exchange temperature difference based on the following formula; ;in, The heat exchange temperature difference, The outlet air temperature is... The inlet air temperature is... The initial temperature of the final stage exhaust steam. The temperature after heat exchange of the final stage exhaust steam is denoted as .

6. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor being configured to invoke and run the computer program stored in the memory to perform the method as described in any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 4 above.

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