Flue flow characteristic design method and device, electronic equipment and storage medium

Abstract

According to the flue flow characteristic design method and device, the electronic equipment and the storage medium provided by the invention, the first parameter of the first flue in the flue system is acquired, and the flow characteristic check processing is performed according to the first parameter to obtain the first check information; hydrodynamic parameters are obtained, hydrodynamic checking processing is carried out according to the hydrodynamic parameters, and second checking information is obtained; obtaining first flue flow field information, and performing flue flow field checking processing according to the first flue flow field information to obtain third checking information; and performing flue flow characteristic design processing according to the first checking information, the second checking information and the third checking information to obtain a target flue flow characteristic. According to the embodiment of the invention, flow characteristic checking, hydrodynamic force checking and checking of flue gas flow field change caused by flue gas extraction are carried out to obtain respective corresponding checking information, and design processing of flue flow characteristics is carried out according to various checking information, so that uniform temperature distribution and consistent flow velocity of a medium in a heating surface of a flue system can be ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of flue gas treatment, and in particular to a design method and device for flue flow characteristics, an electronic device and a storage medium. Background Art

[0002] With the continuous growth of my country's energy demand, thermal power plants occupy an important position in the power structure. As a key component of thermal power plants, the flue system is an indispensable part of thermal power plants, metallurgy, chemical industry and other industries. Its main function is to guide the flow of flue gas and ensure that the flue gas can be effectively transmitted from the combustion equipment to the subsequent dust removal, desulfurization and emission systems.

[0003] The flow characteristics of the fluid in the flue system have a crucial impact on the performance of the entire system. Its internal flow characteristics have an important impact on the temperature uniformity of the medium in the heating surface, the consistency of the flow rate, and the thermal efficiency of the entire power plant. However, in the actual operation process, the flue flow characteristics of the flue system are often affected by many factors, resulting in uneven temperature distribution and inconsistent flow rate of the medium in the heating surface, thus affecting the safe and economical operation of the power plant. Summary of the invention

[0004] The present disclosure provides a design method and device for flue flow characteristics, an electronic device and a storage medium. The main purpose is to solve the problem that in the actual operation process, the flue flow characteristics of the flue system are affected by various factors, resulting in uneven temperature distribution and inconsistent flow rate of the medium in the heating surface, thereby affecting the safe and economic operation of the power plant.

[0005] According to a first aspect of the present disclosure, a method for designing flue flow characteristics is provided, comprising:

[0006] Acquire a first parameter of a first flue in the flue system, and perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein the first flue at least includes a bend pipe at a flue gas extraction point of a rear wall of a turning chamber in the flue system;

[0007] Acquiring hydrodynamic parameters of the flue system, and performing hydrodynamic calibration processing according to the hydrodynamic parameters to obtain second calibration information;

[0008] Acquire first flue flow field information of the flue system, and perform flue flow field calibration processing according to the first flue flow field information to obtain third calibration information; wherein the first flue flow field information at least includes flue gas flow field change information caused by extracting flue gas from the flue system;

[0009] The flue flow characteristics design processing of the flue system is performed according to the first verification information, the second verification information and the third verification information to obtain the target flue flow characteristics.

[0010] Optionally, performing flow characteristic calibration processing according to the first parameter to obtain first calibration information includes:

[0011] The flow characteristics of the rear shaft superheater are calibrated according to the first parameter to obtain the first calibration information; wherein the flow characteristics of the rear shaft superheater are characteristics caused by the bend at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

[0012] Optionally, the flow characteristic verification processing is performed on the flow characteristic of the rear shaft superheater according to the first parameter to obtain the first verification information, which includes:

[0013] Performing a three-dimensional flow characteristic mathematical model establishment process according to the first parameter to obtain a first mathematical model; wherein the first mathematical model is at least used to analyze the three-dimensional flow characteristics of the flue system;

[0014] The flow characteristics of the first flue are simulated according to a preset fluid algorithm and the first mathematical model to obtain first simulation information, and the flow characteristics are verified according to the first simulation information to obtain the first verification information.

[0015] Optionally, performing flue flow field verification processing according to the first flue flow field information to obtain third verification information includes:

[0016] The flue flow field change of the rear shaft is subjected to flue flow field calibration processing according to the first flue flow field information to obtain the third calibration information; wherein the flue flow field change of the rear shaft is the flue flow field change caused by extracting flue gas from the flue system.

[0017] Optionally, after performing flue flow characteristic design processing of the flue system according to the first verification information, the second verification information, and the third verification information to obtain target flue flow characteristics, the method further includes:

[0018] When the smoke gas volume of the flue system is set to the first gas volume, the flue equipment of the flue system is designed and processed to determine the target equipment; wherein the target equipment is equipment to be configured in the flue system, and the medium temperature at the inlet and outlet of the target equipment meets the preset design requirements.

[0019] Optionally, after performing flue flow characteristic design processing of the flue system according to the first verification information, the second verification information, and the third verification information to obtain target flue flow characteristics, the method further includes:

[0020] An isolation design is performed on the outlet flue of the target device in the flue gas system to obtain target isolation information; wherein the target isolation information at least includes parameters of the isolation device to be installed at the outlet flue of the target device.

[0021] Optionally, performing flue flow characteristic design processing on the flue system according to the first verification information, the second verification information, and the third verification information to obtain target flue flow characteristics includes:

[0022] The first flue is optimized and designed according to the first verification information, the second verification information and the third verification information to obtain a second flue; wherein the optimization and design of the first flue at least includes: optimizing the radius of the bend of the first flue, changing the position of the flue gas extraction point in the first flue, and adding a guide device in the first flue;

[0023] The target flue flow characteristic is determined according to the second flue.

[0024] According to a second aspect of the present disclosure, there is provided a device for designing flue flow characteristics, comprising:

[0025] An acquisition unit, used for acquiring a first parameter of a first flue in the flue system;

[0026] A first calibration unit is used to perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein the first flue at least includes a bend pipe at a flue gas extraction point of the rear wall of the turning chamber in the flue system;

[0027] The acquisition unit is also used to acquire the hydrodynamic parameters of the flue system;

[0028] A second calibration unit, configured to perform a hydrodynamic calibration process according to the hydrodynamic parameters to obtain second calibration information;

[0029] The acquisition unit is further used to acquire first flue flow field information of the flue system;

[0030] A third verification unit is used to perform flue flow field verification processing according to the first flue flow field information to obtain third verification information; wherein the first flue flow field information at least includes flue gas flow field change information caused by extracting flue gas from the flue system;

[0031] The design unit is used to perform flue flow characteristic design processing of the flue system according to the first verification information, the second verification information and the third verification information to obtain target flue flow characteristics.

[0032] Optionally, the first calibration unit is also used to perform flow characteristic calibration processing on the flow characteristics of the rear shaft superheater according to the first parameter to obtain the first calibration information; wherein the flow characteristics of the rear shaft superheater are characteristics caused by the bend at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

[0033] Optionally, the first checking unit includes:

[0034] An establishment module, used for performing a three-dimensional flow characteristic mathematical model establishment process according to the first parameter to obtain a first mathematical model; wherein the first mathematical model is at least used for analyzing the three-dimensional flow characteristics of the flue system;

[0035] A processing module is used to perform flow characteristic simulation processing on the first flue according to a preset fluid algorithm and the first mathematical model to obtain first simulation information, and to perform flow characteristic verification processing according to the first simulation information to obtain the first verification information.

[0036] Optionally, the third verification unit is also used to perform flue flow field verification processing on the change of the flue flow field in the rear vertical shaft according to the first flue flow field information to obtain the third verification information; wherein, the change of the flue flow field in the rear vertical shaft is the change of the flue flow field caused by extracting flue gas from the flue system.

[0037] Optionally, the device further comprises:

[0038] A processing unit is used to design and process the flue equipment of the flue system and determine a target device when the smoke gas volume of the flue system is set to a first gas volume; wherein the target device is a device to be configured in the flue system, and the medium temperature at the inlet and outlet of the target device meets the preset design requirements.

[0039] Optionally, the processing unit is also used to perform isolation design on the outlet flue of the target device in the flue gas system to obtain target isolation information; wherein the target isolation information at least includes parameters of the isolation device to be installed at the outlet flue of the target device.

[0040] Optionally, the design unit includes:

[0041] an optimization module, configured to optimize the design of the first flue according to the first verification information, the second verification information, and the third verification information to obtain a second flue; wherein the optimization of the design of the first flue at least includes: optimizing the radius of the elbow of the first flue, changing the position of the flue gas extraction point in the first flue, and adding a guide device in the first flue;

[0042] A determination module is used to determine the flow characteristics of the target flue according to the second flue.

[0043] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0044] at least one processor; and

[0045] a memory communicatively connected to the at least one processor; wherein,

[0046] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0047] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0048] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in the first aspect above.

[0049] The present disclosure provides a design method and device for flue flow characteristics, an electronic device and a storage medium, which obtain a first parameter of a first flue in a flue system, and perform flow characteristic verification processing according to the first parameter to obtain first verification information; wherein the first flue at least includes a bend at a flue gas extraction point of a rear wall of a turning chamber in the flue system; obtains hydrodynamic parameters of the flue system, and performs hydrodynamic verification processing according to the hydrodynamic parameters to obtain second verification information; obtains first flue flow field information of the flue system, and performs flue flow field verification processing according to the first flue flow field information to obtain third verification information; wherein the first flue flow field information at least includes information on changes in the flue flow field caused by extraction of flue gas from the flue system; performs flue flow characteristic design processing of the flue system according to the first verification information, the second verification information and the third verification information to obtain target flue flow characteristics. Compared with the related art, the embodiment of the present disclosure performs flow characteristic calibration and hydrodynamic calibration on the bend pipe at the flue gas extraction point of the rear wall of the turning chamber, as well as calibration on the change of the flue gas flow field caused by the flue gas extraction, obtains the corresponding calibration information, and designs the flue flow characteristics based on the multiple calibration information, thereby ensuring uniform temperature distribution and consistent flow velocity of the medium on the heating surface of the flue system, thereby further ensuring safe and economical operation of the power plant.

[0050] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0052] Figure 1 A schematic flow chart of a method for designing flue flow characteristics provided in an embodiment of the present disclosure;

[0053] Figure 2 A schematic diagram of the structure of a device for designing flue flow characteristics provided in an embodiment of the present disclosure;

[0054] Figure 3 A schematic diagram of the structure of another device for designing flue flow characteristics provided by an embodiment of the present disclosure;

[0055] Figure 4 A schematic block diagram of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0057] The following describes the design method, device, electronic device and storage medium of the flue flow characteristics of the embodiments of the present disclosure with reference to the accompanying drawings.

[0058] Figure 1 A schematic flow chart of a method for designing flue flow characteristics provided in an embodiment of the present disclosure.

[0059] like Figure 1 As shown, the method comprises the following steps:

[0060] Step 101, obtain the first parameter of the first flue in the flue system, and perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein, the first flue at least includes a bend pipe at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

[0061] In the embodiment of the present disclosure, when obtaining the first parameter, the first flue in the flue system is monitored and measured to determine the specific flow characteristic parameters of the first flue. The first parameter includes but is not limited to: flow rate, pressure, temperature, density, etc. The first parameter is crucial for understanding and analyzing the behavior of the fluid in the flue.

[0062] The first flue refers to any designated part of the flue system, but the first flue must at least include an elbow at the smoke extraction point of the rear wall of the turning chamber. The elbow at the smoke extraction point of the rear wall of the turning chamber is a key area in the flue system. The smoke will experience changes in flow velocity and direction at the elbow, and the smoke changes have an important impact on the overall performance of the flue system.

[0063] The purpose of the flow characteristic verification process is to ensure that the flow characteristics of the flue in actual operation meet the design requirements and do not cause adverse fluid dynamic effects, such as flow separation, vortex or excessive pressure loss. The first verification information is a series of information obtained after the flow characteristic verification process, and the first verification information reflects the performance of the flue in the first flue. The first verification information includes but is not limited to: flow uniformity, pressure distribution, flow velocity distribution and other data, as well as the identification of any areas that need improvement.

[0064] Specifically, regarding the implementation process of the embodiment of the present disclosure, the following methods may be used but are not limited to: Monitoring and measurement: Install sensors or use other measuring tools to collect fluid flow data on the bend at the flue gas extraction point on the rear wall of the turning chamber of the flue system. Data analysis: Use fluid dynamics principles and calculation methods to process the collected data to evaluate the flow characteristics of the flue. Performance evaluation: Based on the analysis results, evaluate whether the flow characteristics of the flue at this position meet the design standards, such as whether there is excessive pressure loss or flow unevenness. Information output: Ultimately, the first verification information obtained will be used to guide subsequent design optimization work to ensure efficient and reliable operation of the flue system.

[0065] Specifically, the purpose of the embodiment of the present disclosure is to calibrate the flow characteristics of the rear shaft superheater caused by the bend at the extraction point of the rear wall of the turning chamber, and obtain the first calibration information to ensure that the medium temperature is uniform and the flow rate is consistent on the heating surface at the bend at the extraction point of the rear wall of the turning chamber of the flue system.

[0066] Step 102, obtaining the hydrodynamic parameters of the flue system, and performing a hydrodynamic calibration process according to the hydrodynamic parameters to obtain second calibration information.

[0067] In the embodiment of the present disclosure, when obtaining the hydrodynamic parameters, it is necessary to measure and calculate the flue system to determine various hydrodynamic parameters that affect the flow of the fluid, and the hydrodynamic parameters include but are not limited to: fluid flow rate, pressure, density, viscosity, Reynolds number, Froude number, etc. The hydrodynamic parameters are crucial for understanding and predicting the behavior of the fluid in the flue.

[0068] Among them, hydrodynamic verification refers to the use of the acquired hydrodynamic parameters to perform fluid dynamics analysis on the flue system. The purpose of hydrodynamic verification is to verify whether the flue design can meet the expected operating conditions, including but not limited to: fluid flow stability, resistance loss, interaction between fluid and flue wall, etc.

[0069] Through the hydrodynamic calibration process, a series of information about the performance of the flue system can be obtained, namely the second calibration information, which includes but is not limited to: pressure distribution, velocity distribution, vortex conditions, fluid mixing degree, possible flow separation points, etc. in the flue.

[0070] Specifically, regarding the implementation process of the embodiment of the present disclosure, the following methods may be used but are not limited to: Parameter measurement: Install sensors at appropriate locations of the flue system or use other measuring equipment to collect hydrodynamic parameters. Simulation and analysis: Utilize the principles of fluid dynamics and numerical simulation techniques to analyze the collected parameters to evaluate the hydrodynamic characteristics of the flue. Performance verification: Based on the analysis results, verify whether the flue system operates within the design allowable range and whether there are any problems that may cause performance degradation. Information output: Ultimately, the second verification information will be used to guide the design optimization of the flue system to ensure that the flue can maintain efficient and safe flow characteristics during actual operation.

[0071] The acquisition of the second verification information ensures the rationality of the flue system design and its high efficiency in practical application, which helps to optimize the flue design and improve the operating efficiency and safety of the overall system.

[0072] Step 103, obtaining the first flue flow field information of the flue system, and performing flue flow field calibration processing based on the first flue flow field information to obtain third calibration information; wherein the first flue flow field information at least includes the flue flow field change information caused by flue gas extraction from the flue system.

[0073] In the embodiment of the present disclosure, the first flue flow field information refers to the flue gas flow field data in the flue system. When obtaining the first flue flow field information, it can be obtained by, but not limited to, physical measurement, computational fluid dynamics simulation, etc. The first flue flow field information includes, but is not limited to, flow velocity, pressure, temperature, flue gas component distribution, etc.

[0074] The first flue flow field information at least includes flow field change data caused by extracting flue gas from the flue system. Flue gas extraction may be carried out through chimney purification equipment (such as electrostatic precipitator, desulfurization device, etc.), and the flow characteristics of flue gas will change during the flue gas extraction process. For example, the change of the flue gas flow field in the rear shaft caused by flue gas extraction is checked to prevent uneven heat absorption of the tail heating surface.

[0075] Flue flow field verification processing refers to the use of the first flue flow field information obtained to analyze and verify the flow field of the flue system to ensure that the flue design meets specific performance requirements or standards. Flue flow field verification processing includes but is not limited to: comparing the simulation calculation results of the flue flow field with the actual measurement data, or checking the consistency between the design expectations and the actual operation conditions.

[0076] The third calibration information is a set of result information generated after the flue flow field calibration process. The third calibration information includes but is not limited to: whether the calibration is passed, problems in the flow field, improvement suggestions, etc. The third calibration information is an important feedback on the performance of the flue system, which can help engineers evaluate the operating status of the flue system and make adjustments or optimizations when necessary.

[0077] By monitoring and analyzing the flow field changes caused by flue gas extraction in the flue system, the design and operation of the flue system can be verified to ensure that it meets the established technical specifications and safety requirements. It has important application value in the field of flue gas treatment and environmental protection, and helps to improve the operating efficiency and environmental protection level of the flue system.

[0078] Step 104 , performing flue flow characteristic design processing of the flue system according to the first verification information, the second verification information, and the third verification information to obtain target flue flow characteristics.

[0079] In the embodiment of the present disclosure, the flue flow characteristic design processing of the flue system refers to the design adjustment or optimization of the flow characteristics of the flue system based on the first verification information, the second verification information and the third verification information. The purpose of the flue flow characteristic design processing is to ensure that the flue system can achieve the expected flow characteristics, and the flue flow characteristics include but are not limited to: uniformity of flow velocity distribution, rationality of pressure loss, control of turbulence, optimization of heat exchange efficiency, compliance of flue gas emissions, etc.

[0080] The target flue flow characteristics are flue flow characteristics that meet preset requirements after the flue flow characteristics design processing. The target flue flow characteristics are key indicators for the design and operation of the flue system. The conditions that the target flue flow characteristics should meet include but are not limited to: Safety: Ensure that the flue system does not produce dangerous conditions during operation, such as excessive pressure or temperature. Efficiency: The flow characteristics of the flue system should be able to efficiently support the combustion process and pollutant control. Reliability: The flue system should maintain stable flow characteristics during long-term operation. Compliance: The design of the flue system should comply with relevant environmental protection laws and standards.

[0081] By comprehensively analyzing the three sets of verification information, the flow characteristics of the flue system are designed to achieve the established design goals and ensure the performance and efficiency of the flue system in actual applications.

[0082] The present disclosure provides a method for designing flue flow characteristics, which obtains a first parameter of a first flue in a flue system, and performs flow characteristic calibration processing based on the first parameter to obtain first calibration information; wherein, the first flue at least includes a bend at a flue gas extraction point of a rear wall of a turning chamber in the flue system; obtains hydrodynamic parameters of the flue system, and performs hydrodynamic calibration processing based on the hydrodynamic parameters to obtain second calibration information; obtains first flue flow field information of the flue system, and performs flue flow field calibration processing based on the first flue flow field information to obtain third calibration information; wherein, the first flue flow field information at least includes information on changes in the flue gas flow field caused by extraction of flue gas from the flue system; performs flue flow characteristic design processing of the flue system based on the first calibration information, the second calibration information and the third calibration information to obtain target flue flow characteristics. Compared with the related art, the embodiment of the present disclosure performs flow characteristic calibration and hydrodynamic calibration on the bend pipe at the flue gas extraction point of the rear wall of the turning chamber, as well as calibration on the change of the flue gas flow field caused by the flue gas extraction, obtains the corresponding calibration information, and designs the flue flow characteristics based on the multiple calibration information, thereby ensuring uniform temperature distribution and consistent flow velocity of the medium on the heating surface of the flue system, thereby further ensuring safe and economical operation of the power plant.

[0083] In one implementable manner of the embodiment of the present disclosure, when performing flow characteristic verification processing according to the first parameter, it can also be implemented in but not limited to the following manner: performing flow characteristic verification processing on the flow characteristic of the rear shaft superheater according to the first parameter to obtain the first verification information; wherein the flow characteristic of the rear shaft superheater is the characteristic caused by the bend at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

[0084] In the disclosed embodiment, the rear shaft superheater is a part of the flue system, and is located at the bend at the flue gas extraction point of the rear wall of the turning chamber. The flow characteristics of the rear shaft superheater are affected by the flue gas extraction operation, including but not limited to: flow velocity distribution, turbulence intensity, pressure change, etc. The flow characteristics of the rear shaft superheater have an important impact on the heat exchange efficiency of the superheater and the overall performance of the flue system.

[0085] In one implementable manner of the embodiment of the present disclosure, the flow characteristic verification processing can also be implemented in the following manner but is not limited to: a three-dimensional flow characteristic mathematical model is established based on the first parameter to obtain a first mathematical model; wherein the first mathematical model is at least used to analyze the three-dimensional flow characteristics of the flue system; the flow characteristic simulation processing of the first flue is performed according to a preset fluid algorithm and the first mathematical model to obtain first simulation information, and the flow characteristic verification processing is performed based on the first simulation information to obtain the first verification information.

[0086] In the embodiment of the present disclosure, when the mathematical model is established, the first parameters (such as flow rate, pressure, temperature, etc.) obtained from the flue system are mainly used to establish a mathematical model of three-dimensional flow characteristics. The first mathematical model is an abstract representation that can describe the complex behavior of fluid flow in the flue system. The first parameter is used as the input of the model to construct the structure and parameters of the model.

[0087] The main purpose of the first mathematical model is to analyze and understand the three-dimensional flow characteristics in the flue system, including but not limited to: velocity distribution, pressure distribution, temperature distribution, vortex structure, etc. of the fluid in three-dimensional space. Through the first mathematical model, we can have a deeper understanding of the flow conditions in the flue system, providing a basis for subsequent simulation and verification.

[0088] The preset fluid algorithm is a custom set algorithm, such as: numerical solution of Navier-Stokes equation, etc. When simulating the flow characteristics, the following method can be used but not limited to: using the preset fluid dynamics algorithm (such as: numerical solution of Navier-Stokes equation) and the first mathematical model to simulate the flow characteristics of the first flue. The simulation process can be performed on a computer, and a series of simulation results, i.e., the first simulation information, are obtained by calculation. The first simulation information includes but is not limited to: velocity distribution: the simulation information will include the distribution of flue gas velocity at different positions and different cross-sections in the flue, which helps to understand the uniformity of the flue gas velocity and whether there are high-speed or low-speed areas. Pressure distribution: This refers to the pressure value of each point in the flue, including pressure gradient, pressure drop, etc. This information is very important for evaluating the resistance loss and airflow stability of the flue system. Temperature distribution: The simulation information will provide the temperature distribution of the flue gas in the flue, which is crucial for heat exchange efficiency and preventing local overheating of the flue. Vortex structure: The simulation results may contain detailed information on vortices and swirls formed in the fluid flow, which may affect the flow efficiency and acoustic characteristics of the flue. Flow trajectory: The simulation information may also include the flow trajectory of the smoke in the flue, which helps to analyze the flow path of the smoke and possible flow separation phenomena. Fluid mixing: In the flue system, flue gases of different temperatures or compositions may mix, and the simulation information will provide information on the degree of mixing and the mixing mode. Boundary layer characteristics: The simulation results may include characteristics such as the boundary layer thickness and velocity profile near the flue wall, which is very important for understanding the friction and heat transfer of the flue wall. Dynamic response: If the simulation takes time changes into account, the first simulation information may also include the dynamic response of the flue system to changes in operating conditions.

[0089] A mathematical model (first mathematical model) of three-dimensional flow characteristics is established based on actual measured parameters, and the flow characteristics of the flue system are simulated using the first mathematical model and a fluid algorithm. Finally, the flow characteristics are calibrated using the simulation results to obtain calibration information, which helps to conduct in-depth analysis and optimization of the performance of the flue system during the design stage or the operation and maintenance stage.

[0090] In one implementable manner of the embodiment of the present disclosure, when performing flue flow field verification processing, it can also be implemented in but not limited to the following manner: performing flue flow field verification processing on the flue gas flow field change in the rear vertical shaft according to the first flue flow field information to obtain the third verification information; wherein, the flue gas flow field change in the rear vertical shaft is the flue gas flow field change caused by extracting flue gas from the flue system.

[0091] In the disclosed embodiment, a detailed verification and analysis is performed on the changes in the flue gas flow field in the rear shaft caused by flue gas extraction to ensure the performance and safety of the flue system in design or operation, which helps to discover and solve flow problems in advance and ensure the stable operation and environmentally friendly emissions of the flue system.

[0092] In one implementable manner of the embodiment of the present disclosure, it is necessary to set the bottom-layer low-temperature superheater and economizer of the flue system under full consideration of the maximum flue gas volume, so as to ensure that the medium temperature at the inlet and outlet of the bottom-layer low-temperature superheater and economizer meets the original boiler design requirements. Therefore, in order to ensure that the flue system can meet the performance and safety standards, thereby reducing risks and costs during the construction and operation stages, the following method may also be adopted but is not limited to: when the flue gas volume of the flue system is set to the first gas volume, the flue equipment of the flue system is designed and processed to determine the target equipment; wherein the target equipment is the equipment to be configured in the flue system, and the medium temperature at the inlet and outlet of the target equipment meets the preset design requirements.

[0093] In the disclosed embodiment, the first gas volume is the gas volume that is customized according to the parameters of the flue system, the first gas volume is the maximum smoke extraction volume of the flue system, and the preset design requirement is a predetermined system design requirement, specification or criterion, for example: the medium temperature at the outlet of the target device needs to be within a specific range to ensure the normal operation of the downstream equipment or meet environmental emission standards. The medium temperature at the inlet of the target device needs to meet the thermal tolerance of the equipment material or the temperature requirement of the chemical reaction. The temperature change of the medium at the inlet and outlet needs to be controlled within a certain range to maintain the thermal efficiency of the system or prevent equipment damage.

[0094] The target equipment is equipment to be configured in the flue system to meet specific functional requirements, such as: bottom-level low-temperature superheater, economizer, etc. The target equipment is finally determined by designing the flue equipment under the maximum flue gas extraction volume of the flue system, and the inlet and outlet medium temperatures of the target equipment can meet the preset design requirements, ensuring that the flue system can meet performance and safety standards in the design stage, thereby reducing risks and costs in the construction and operation stages.

[0095] In one implementable manner of the embodiment of the present disclosure, it is necessary to design physical isolation for the closing position of the regulating valve at the economizer outlet flue to prevent accidents caused by the isolation door being fully closed during unit operation. Therefore, in order to ensure that the isolation equipment can safely and effectively cut off the flue gas flow when needed and ensure stable operation of the unit, the following method may also be used but is not limited to: the outlet flue of the target device is isolated and designed in the flue gas system to obtain target isolation information; wherein the target isolation information includes at least the parameters of the isolation equipment to be installed at the outlet flue of the target device.

[0096] In the embodiment of the present disclosure, the isolation design for the outlet flue of the target device refers to the implementation of an isolation measure for the outlet flue of the target device, with the aim of being able to cut off the flow of smoke when necessary for maintenance, overhaul or emergency response, while preventing accidents caused by accidental full closure of the isolation door.

[0097] The target isolation information is a reflection of the design results and is used to guide subsequent equipment installation and system operation. The target isolation information includes but is not limited to: the type of isolation equipment (such as baffles, gates, regulating valves, etc.). The size, material and structural details of the isolation equipment. The installation location and method of the isolation equipment. The operating parameters of the isolation equipment (such as opening / closing time, torque requirements, etc.). The safety features of the isolation equipment (such as anti-misoperation mechanism, fail-safe position, etc.).

[0098] By isolating the flue gas outlet of the target equipment, it is ensured that the isolation equipment can safely and effectively cut off the flue gas flow when needed, while preventing operational accidents that may be caused by the isolation door being fully closed. This method improves the safety and reliability of the flue gas system and plays an important role in ensuring the stable operation of the unit.

[0099] In one implementable manner of the embodiment of the present disclosure, when designing and processing the flue flow characteristics of the flue system, it can also be implemented in but not limited to the following manner: optimizing the design of the first flue according to the first verification information, the second verification information and the third verification information to obtain the second flue; wherein the optimizing design of the first flue at least includes: optimizing the bend radius of the first flue, changing the position of the flue gas extraction point in the first flue, and adding a guide device in the first flue; determining the target flue flow characteristics according to the second flue.

[0100] In the disclosed embodiment, the flue flow characteristics in the second flue are the target flue flow characteristics, and the flue flow characteristics design is to optimize the design of the first flue, for example: optimizing the elbow radius of the first flue: by adjusting the radius of the elbow, the pressure loss and turbulence of the flue gas when it flows through the elbow can be reduced, thereby improving the flow characteristics. Changing the position of the smoke extraction point in the first flue: by adjusting the position of the smoke extraction point, the flow path of the smoke can be optimized, and flow interference and unevenness can be reduced. Adding a guide device to the first flue: by adding a guide device, the smoke flow can be guided, eddy currents and flow separation can be reduced, and the flow efficiency of the flue can be improved. To obtain a second flue whose flow characteristics are the target flue flow characteristics.

[0101] By taking a series of optimization measures on the first flue, a second flue with ideal flue flow characteristics (target flue flow characteristics) is finally obtained, ensuring that the flue system can operate more efficiently and stably in actual applications while meeting environmental protection and safety requirements.

[0102] In summary, the embodiments of the present disclosure can achieve the following effects:

[0103] The disclosed embodiment obtains corresponding calibration information by performing flow characteristic calibration and hydrodynamic calibration on the bend at the flue gas extraction point of the rear wall of the turning chamber, as well as calibration on the change in the flue gas flow field caused by the flue gas extraction, and designs and processes the flue flow characteristics based on the various calibration information, thereby ensuring uniform temperature distribution and consistent flow velocity of the medium on the heated surface of the flue system, thereby further ensuring safe and economical operation of the power plant.

[0104] Corresponding to the above-mentioned design method of flue flow characteristics, the present invention also proposes a design device for flue flow characteristics. Since the device embodiment of the present invention corresponds to the above-mentioned method embodiment, the details not disclosed in the device embodiment can be referred to the above-mentioned method embodiment, and will not be repeated in the present invention.

[0105] Figure 2 A schematic diagram of a design device for flue flow characteristics provided in an embodiment of the present disclosure is shown in FIG. Figure 2 As shown, including:

[0106] An acquisition unit 21, used for acquiring a first parameter of a first flue in the flue system;

[0107] A first calibration unit 22 is used to perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein the first flue at least includes a bend pipe at a flue gas extraction point of the rear wall of the turning chamber in the flue system;

[0108] The acquisition unit 21 is also used to acquire the hydrodynamic parameters of the flue system;

[0109] A second calibration unit 23, configured to perform a hydrodynamic calibration process according to the hydrodynamic parameters to obtain second calibration information;

[0110] The acquisition unit 21 is also used to acquire first flue flow field information of the flue system;

[0111] A third verification unit 24 is used to perform flue flow field verification processing according to the first flue flow field information to obtain third verification information; wherein the first flue flow field information at least includes flue gas flow field change information caused by extracting flue gas from the flue system;

[0112] The design unit 25 is used to perform a design process of the flue flow characteristics of the flue system according to the first verification information, the second verification information and the third verification information to obtain a target flue flow characteristic.

[0113] The present disclosure provides a design device for flue flow characteristics, which obtains a first parameter of a first flue in a flue system, and performs flow characteristic calibration processing based on the first parameter to obtain first calibration information; wherein, the first flue at least includes a bend at a flue gas extraction point of a rear wall of a turning chamber in the flue system; obtains hydrodynamic parameters of the flue system, and performs hydrodynamic calibration processing based on the hydrodynamic parameters to obtain second calibration information; obtains first flue flow field information of the flue system, and performs flue flow field calibration processing based on the first flue flow field information to obtain third calibration information; wherein, the first flue flow field information at least includes information on changes in the flue flow field caused by extraction of flue gas from the flue system; performs flue flow characteristic design processing of the flue system based on the first calibration information, the second calibration information and the third calibration information to obtain target flue flow characteristics. Compared with the related art, the embodiment of the present disclosure performs flow characteristic calibration and hydrodynamic calibration on the bend pipe at the flue gas extraction point of the rear wall of the turning chamber, as well as calibration on the change of the flue gas flow field caused by the flue gas extraction, obtains the corresponding calibration information, and designs the flue flow characteristics based on the multiple calibration information, thereby ensuring uniform temperature distribution and consistent flow velocity of the medium on the heating surface of the flue system, thereby further ensuring safe and economical operation of the power plant.

[0114] Furthermore, in a possible implementation of the embodiment of the present disclosure, the first calibration unit 22 is also used to perform flow characteristic calibration processing on the flow characteristics of the rear shaft superheater according to the first parameter to obtain the first calibration information; wherein the flow characteristics of the rear shaft superheater are characteristics caused by the bend at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

[0115] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 3 As shown, the first checking unit 22 includes:

[0116] Establishing module 221, used for establishing a three-dimensional flow characteristic mathematical model according to the first parameter to obtain a first mathematical model; wherein the first mathematical model is at least used for analyzing the three-dimensional flow characteristics of the flue system;

[0117] The processing module 222 is used to perform flow characteristic simulation processing on the first flue according to a preset fluid algorithm and the first mathematical model to obtain first simulation information, and to perform flow characteristic verification processing according to the first simulation information to obtain the first verification information.

[0118] Furthermore, in a possible implementation of the embodiment of the present disclosure, the third verification unit 24 is also used to perform flue flow field verification processing on the change of the flue gas flow field in the rear vertical shaft according to the first flue flow field information to obtain the third verification information; wherein, the change of the flue gas flow field in the rear vertical shaft is the change of the flue gas flow field caused by extracting flue gas from the flue system.

[0119] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 3 As shown, the device also includes:

[0120] The processing unit 26 is used to design and process the flue equipment of the flue system and determine the target equipment when the smoke gas volume of the flue system is set to the first gas volume; wherein the target equipment is equipment to be configured in the flue system, and the medium temperature at the inlet and outlet of the target equipment meets the preset design requirements.

[0121] Furthermore, in a possible implementation of the embodiment of the present disclosure, the processing unit 26 is also used to perform isolation design on the outlet flue of the target device in the flue system to obtain target isolation information; wherein the target isolation information at least includes parameters of the isolation device to be installed at the outlet flue of the target device.

[0122] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 3 As shown, the design unit 25 includes:

[0123] The optimization module 251 is used to optimize the design of the first flue according to the first verification information, the second verification information and the third verification information to obtain a second flue; wherein the optimization of the design of the first flue at least includes: optimizing the radius of the elbow of the first flue, changing the position of the smoke extraction point in the first flue, and adding a guide device in the first flue;

[0124] The determination module 252 is used to determine the flow characteristics of the target flue according to the second flue.

[0125] It should be noted that the above explanation of the method embodiment is also applicable to the device of the embodiment of the present disclosure, and the principle is the same, which is no longer limited in the embodiment of the present disclosure.

[0126] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0127] Figure 4A schematic block diagram of an example electronic device 400 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0128] like Figure 4 As shown, the device 400 includes a computing unit 401, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 402 or a computer program loaded from a storage unit 408 to a RAM (Random Access Memory) 403. In the RAM 403, various programs and data required for the operation of the device 400 can also be stored. The computing unit 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An I / O (Input / Output) interface 405 is also connected to the bus 404.

[0129] A number of components in the device 400 are connected to the I / O interface 405, including: an input unit 406, such as a keyboard, a mouse, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0130] The computing unit 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, CPU (Central Processing Unit), GPU (Graphic Processing Units), various dedicated AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSP (Digital Signal Processor), and any appropriate processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as the design method of flue flow characteristics. For example, in some embodiments, the design method of flue flow characteristics may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 400 via ROM 402 and / or communication unit 409. When the computer program is loaded into RAM 403 and executed by the computing unit 401, one or more steps of the method described above may be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to execute the aforementioned flue flow characteristic design method in any other appropriate manner (for example, by means of firmware).

[0131] Various embodiments of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application Specific Standard Products), SOCs (System On Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that may be executed and / or interpreted on a programmable system including at least one programmable processor that may be a special purpose or general purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0132] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0133] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a RAM, a ROM, an EPROM (Electrically Programmable Read-Only-Memory) or a flash memory, an optical fiber, a CD-ROM (Compact Dis sc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0134] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball), through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0135] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0136] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services ("Virtual Private Server", or "VPS" for short). The server may also be a server of a distributed system, or a server combined with a blockchain.

[0137] It should be noted that artificial intelligence is a discipline that studies how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.), and includes both hardware-level and software-level technologies. Artificial intelligence hardware technologies generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, and big data processing; artificial intelligence software technologies mainly include computer vision technology, speech recognition technology, natural language processing technology, as well as machine learning / deep learning, big data processing technology, knowledge graph technology, and other major directions.

[0138] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0139] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for designing flue flow characteristics, characterized in that: include: Acquire a first parameter of a first flue in the flue system, and perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein the first flue at least includes a bend pipe at a flue gas extraction point of a rear wall of a turning chamber in the flue system; Acquiring hydrodynamic parameters of the flue system, and performing hydrodynamic calibration processing according to the hydrodynamic parameters to obtain second calibration information; Acquire first flue flow field information of the flue system, and perform flue flow field calibration processing according to the first flue flow field information to obtain third calibration information; wherein the first flue flow field information at least includes flue gas flow field change information caused by extracting flue gas from the flue system; The flue flow characteristics design processing of the flue system is performed according to the first verification information, the second verification information and the third verification information to obtain the target flue flow characteristics.

2. The method according to claim 1, characterized in that The flow characteristic verification process is performed according to the first parameter to obtain the first verification information, including: The flow characteristics of the rear shaft superheater are calibrated according to the first parameter to obtain the first calibration information; wherein the flow characteristics of the rear shaft superheater are characteristics caused by the bend at the flue gas extraction point of the rear wall of the turning chamber in the flue system.

3. The method according to claim 1, characterized in that The flow characteristic verification processing of the rear shaft superheater flow characteristic is performed according to the first parameter to obtain the first verification information, which includes: Performing a three-dimensional flow characteristic mathematical model establishment process according to the first parameter to obtain a first mathematical model; wherein the first mathematical model is at least used to analyze the three-dimensional flow characteristics of the flue system; The flow characteristics of the first flue are simulated according to a preset fluid algorithm and the first mathematical model to obtain first simulation information, and the flow characteristics are verified according to the first simulation information to obtain the first verification information.

4. The method according to claim 1, characterized in that The flue flow field verification processing is performed according to the first flue flow field information to obtain the third verification information, which includes: The flue flow field change of the rear shaft is subjected to flue flow field calibration processing according to the first flue flow field information to obtain the third calibration information; wherein the flue flow field change of the rear shaft is the flue flow field change caused by extracting flue gas from the flue system.

5. The method according to claim 1, characterized in that After the flue flow characteristic design processing of the flue system is performed according to the first verification information, the second verification information and the third verification information to obtain the target flue flow characteristic, the method further includes: When the smoke gas volume of the flue system is set to the first gas volume, the flue equipment of the flue system is designed and processed to determine the target equipment; wherein the target equipment is equipment to be configured in the flue system, and the medium temperature at the inlet and outlet of the target equipment meets the preset design requirements.

6. The method according to claim 5, characterized in that After the flue flow characteristic design processing of the flue system is performed according to the first verification information, the second verification information and the third verification information to obtain the target flue flow characteristic, the method further includes: An isolation design is performed on the outlet flue of the target device in the flue gas system to obtain target isolation information; wherein the target isolation information at least includes parameters of the isolation device to be installed at the outlet flue of the target device.

7. The method according to claim 1, characterized in that The design processing of the flue flow characteristics of the flue system is performed according to the first verification information, the second verification information and the third verification information to obtain the target flue flow characteristics, including: The first flue is optimized and designed according to the first verification information, the second verification information and the third verification information to obtain a second flue; wherein the optimization and design of the first flue at least includes: optimizing the radius of the bend of the first flue, changing the position of the flue gas extraction point in the first flue, and adding a guide device in the first flue; The target flue flow characteristic is determined according to the second flue.

8. A device for designing flue flow characteristics, characterized in that: include: An acquisition unit, used for acquiring a first parameter of a first flue in the flue system; A first calibration unit is used to perform flow characteristic calibration processing according to the first parameter to obtain first calibration information; wherein the first flue at least includes a bend pipe at a flue gas extraction point of the rear wall of the turning chamber in the flue system; The acquisition unit is also used to acquire the hydrodynamic parameters of the flue system; A second calibration unit, configured to perform a hydrodynamic calibration process according to the hydrodynamic parameters to obtain second calibration information; The acquisition unit is further used to acquire first flue flow field information of the flue system; A third verification unit is used to perform flue flow field verification processing according to the first flue flow field information to obtain third verification information; wherein the first flue flow field information at least includes flue gas flow field change information caused by extracting flue gas from the flue system; The design unit is used to perform flue flow characteristic design processing of the flue system according to the first verification information, the second verification information and the third verification information to obtain target flue flow characteristics.

9. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-7.

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