A method, device and equipment for early warning of a state of a heating surface tube panel and a storage medium

Abstract

The application discloses a kind of early warning method, device, equipment and storage medium of heated surface tube screen state, by dividing into multiple tube screen nodes, obtain the multiple inner wall temperature information corresponding to the multiple tube screen nodes and the data information of control system, and then calculate the multiple outer wall temperature information corresponding to the multiple tube screen nodes;According to the multiple outer wall temperature information and the data information of control system, calculate the multiple oxide skin generation thickness corresponding to the multiple tube screen nodes;According to the multiple oxide skin generation thickness, preset first critical thickness value and preset second critical thickness value, obtain the multiple oxide skin accumulation thickness corresponding to the multiple tube screen nodes;When any one of the multiple oxide skin accumulation thickness reaches preset accumulation thickness value, generate the early warning information corresponding to the preset accumulation thickness value.The application can monitor the state of high-temperature heated surface tube screen in real time, effectively reduce the occurrence of tube screen explosion leakage accident.

Description

Technical Field

[0001] This application relates to the field of safety detection technology, and in particular to a method, apparatus, equipment and storage medium for early warning of the status of heated surface tube screens. Background Technology

[0002] With the rapid development of power construction, the proportion of non-fossil power generation in my country's total power generation has increased, and thermal power units are developing towards peak-shaving units. This has resulted in boiler high-temperature heating surfaces being in harsh and variable operating conditions for a long time, leading to frequent tube wall overheating and tube panel explosion accidents. This not only affects the economic benefits of power plants and threatens personal safety, but may also affect the safe and stable operation of the power grid.

[0003] Existing technologies typically assess the condition of the high-temperature heating surface tube screen by detecting tube wall corrosion, wear, fatigue, quality defects, etc., when the boiler is not in operation, thereby determining whether there is a potential risk of tube screen rupture and leakage, in order to reduce the occurrence of tube screen rupture and leakage accidents.

[0004] However, existing technologies cannot assess the condition of high-temperature heating surface tube panels while the boiler is in operation. Therefore, they cannot effectively monitor the condition of high-temperature heating surface tube panels, and thus cannot effectively reduce the occurrence of tube panel bursting accidents. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a method, apparatus, device, and storage medium for early warning of the status of heated surface tube panels.

[0006] The embodiments of this application disclose the following technical solutions:

[0007] This application provides an early warning method for the status of a heated surface tube screen, including:

[0008] The tube screen is divided into multiple tube screen nodes along the tube wall direction;

[0009] Acquire multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system;

[0010] Based on the multiple inner wall temperature information and the data information of the control system, calculate the multiple outer wall temperature information corresponding to the multiple tube screen nodes;

[0011] Based on the multiple outer wall temperature information and the data information of the control system, the multiple oxide scale formation thicknesses corresponding to the multiple tube screen nodes are calculated;

[0012] Based on the multiple oxide scale generation thicknesses, the preset first critical thickness value, and the preset second critical thickness value, the multiple oxide scale stacking thicknesses corresponding to the multiple tube screen nodes are obtained;

[0013] When any one of the multiple oxide scale build-up thicknesses reaches a preset build-up thickness value, an early warning message corresponding to the preset build-up thickness value is generated.

[0014] Further, the step of calculating the multiple outer wall temperature information corresponding to the multiple tube-panel nodes based on the multiple inner wall temperature information and the data information of the control system includes:

[0015] Based on the multiple inner wall temperature information and the data information of the control system, the multiple heat flux densities are obtained through numerical simulation calculation;

[0016] The multiple outer wall temperature information is calculated based on the multiple inner wall temperature information, the data information of the control system, and the multiple heat flux densities.

[0017] Further, the step of calculating the oxide scale formation thickness corresponding to the multiple pipe screen nodes based on the multiple outer wall temperature information and the data information of the control system includes:

[0018] The units of the multiple outer wall temperature information are converted to obtain multiple converted outer wall temperature information;

[0019] Based on the multiple converted outer wall temperature information and the data information of the control system, the multiple oxide scale formation thicknesses corresponding to the multiple tube screen nodes are calculated.

[0020] Further, obtaining the multiple oxide scale stacking thicknesses corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses, a preset first critical thickness value, and a preset second critical thickness value includes:

[0021] Based on the multiple oxide scale formation thicknesses and the first critical thickness value, determine the multiple first detachment counts corresponding to the multiple tube screen nodes;

[0022] Based on the multiple oxide scale formation thicknesses and the second critical thickness value, determine the multiple second detachment counts corresponding to the multiple tube screen nodes;

[0023] The multiple oxide scale build-up thicknesses are obtained based on the first critical thickness value, the second critical thickness value, the multiple first peeling times, and the multiple second peeling times.

[0024] Further, obtaining the multiple inner wall temperature information corresponding to the multiple tube screen nodes includes:

[0025] Obtain the inner wall temperature information of the tube screen opening and the total heat absorption of the tube screen;

[0026] The multiple inner wall temperature information is obtained based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the position information of the multiple tube screen nodes.

[0027] Furthermore, the step of generating a warning message corresponding to the preset accumulation thickness value when any one of the plurality of oxide scale accumulation thicknesses reaches a preset accumulation thickness value includes:

[0028] If any one of the multiple oxide scale build-up thicknesses reaches the first build-up thickness value, a cleaning warning message is generated.

[0029] If any one of the multiple oxide scale build-up thicknesses reaches the second build-up thickness value, a maintenance warning message is generated.

[0030] Furthermore, it also includes:

[0031] Based on the multiple outer wall temperature information, the multiple outer wall temperature information and the multiple oxide scale formation thickness, multiple display information corresponding to the multiple tube screen nodes is generated;

[0032] Based on the multiple display information, display the multiple display information.

[0033] This application embodiment also provides an early warning device for the state of a heated surface tube screen, including:

[0034] The module is divided into a partitioning module, an acquisition module, a first calculation module, a second calculation module, an acquisition module, and a generation module.

[0035] The partitioning module is used to divide the tube screen into multiple tube screen nodes along the tube wall direction;

[0036] The acquisition module is used to acquire multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system;

[0037] The first calculation module is used to calculate multiple outer wall temperature information corresponding to the multiple inner wall temperature information and the data information of the control system;

[0038] The second calculation module is used to calculate the oxide scale generation thickness corresponding to the multiple outer wall temperature information and the data information of the control system.

[0039] The obtaining module is used to obtain the multiple oxide scale stacking thicknesses corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses, a preset first critical thickness value, and a preset second critical thickness value.

[0040] The generation module is used to generate a warning message corresponding to the preset stacking thickness value when any one of the multiple oxide scale stacking thicknesses reaches the preset stacking thickness value.

[0041] Further, the first computing module includes:

[0042] First acquisition unit and first calculation unit;

[0043] The first obtaining unit is used to obtain the multiple heat flux densities through numerical simulation calculation based on the multiple inner wall temperature information and the data information of the control system;

[0044] The first calculation unit is used to calculate the multiple outer wall temperature information based on the multiple inner wall temperature information, the data information of the control system, and the multiple heat flux densities.

[0045] Furthermore, the second computing module includes:

[0046] Second acquisition unit and second calculation unit;

[0047] The second obtaining unit is used to perform unit conversion on the multiple outer wall temperature information to obtain multiple converted outer wall temperature information;

[0048] The second calculation unit is used to calculate the oxide scale generation thickness corresponding to the multiple tube screen nodes based on the multiple converted outer wall temperature information and the data information of the control system.

[0049] Further, the obtaining module includes:

[0050] The first determining unit, the second determining unit, and the third obtaining unit;

[0051] The first determining unit is used to determine multiple first detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses and the first critical thickness value;

[0052] The second determining unit is used to determine multiple second detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses and the second critical thickness value;

[0053] The third obtaining unit is used to obtain the plurality of oxide scale accumulation thicknesses based on the first critical thickness value, the second critical thickness value, the plurality of first peeling times, and the plurality of second peeling times.

[0054] Furthermore, the acquisition module includes:

[0055] Acquisition unit and fourth acquisition unit;

[0056] The acquisition unit is used to acquire the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the data information of the control system;

[0057] The fourth obtaining unit is used to obtain the multiple inner wall temperature information based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the position information of the multiple tube screen nodes.

[0058] Furthermore, the generation module is used for:

[0059] If any one of the multiple oxide scale build-up thicknesses reaches the first build-up thickness value, a cleaning warning message is generated.

[0060] If any one of the multiple oxide scale build-up thicknesses reaches the second build-up thickness value, a maintenance warning message is generated.

[0061] Furthermore, it also includes:

[0062] Generation unit and display unit;

[0063] The generation unit is used to generate multiple display information corresponding to the multiple tube screen nodes based on the multiple outer wall temperature information, the multiple outer wall temperature information and the multiple oxide scale generation thickness;

[0064] The display unit is used to display the multiple display information according to the multiple display information.

[0065] This application embodiment also provides a computer device, the computer device including a processor and a memory:

[0066] The memory is used to store program code and transmit the program code to the processor;

[0067] The processor is used to execute the steps of a pre-warning method for the state of a heated surface tube screen as described above, according to the instructions in the program code.

[0068] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of a pre-warning method for the state of a heated surface tube screen as described above.

[0069] Compared with the prior art, this application has the following beneficial effects:

[0070] This application divides the tube screen along the tube wall direction into multiple tube screen nodes. Based on the inner wall temperature information of multiple tube screen nodes and the data information of the control system, it calculates the outer wall temperature information of multiple tube screen nodes. Then, based on the outer wall temperature information, it calculates the oxide scale formation thickness of multiple tube screen nodes. Finally, based on the oxide scale formation thickness, it obtains the oxide scale accumulation thickness of multiple tube screen nodes. When any of the multiple oxide scale accumulation thicknesses reaches a preset accumulation thickness value, a warning message corresponding to the preset accumulation thickness value is generated. This application can obtain the oxide scale accumulation thickness of multiple tube screen nodes in real time. Using the multiple oxide scale accumulation thicknesses as the basis for evaluating the state of the heated surface tube screen, and generating corresponding warning messages when any of the multiple oxide scale accumulation thicknesses reaches the preset accumulation thickness value, it can monitor the state of the high-temperature heated surface tube screen in real time, effectively reducing the occurrence of tube screen explosion accidents. Attached Figure Description

[0071] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0072] Figure 1 A flowchart illustrating an early warning method for the state of a heated surface tube screen, provided in an embodiment of this application;

[0073] Figure 2 A flowchart illustrating a method for obtaining oxide scale deposition thickness provided in this application embodiment;

[0074] Figure 3 This is a schematic diagram of the structure of an early warning device for the state of a heated surface tube screen provided in an embodiment of this application. Detailed Implementation

[0075] As described above, how to effectively reduce the occurrence of tube screen explosion accidents has become a technical problem that urgently needs to be solved by those skilled in the art.

[0076] The inventors discovered through research that existing technologies can typically only assess the condition of the high-temperature heating surface tube shield by detecting tube wall corrosion, wear, fatigue, and quality defects when the boiler is stopped, thereby determining whether there is a risk of tube shield rupture. Because these technologies cannot assess the condition of the high-temperature heating surface tube shield while the boiler is operating, they cannot obtain timely information on the tube shield's condition when maintenance is not timely or when the tube shield's condition is abnormal, thus failing to effectively reduce the occurrence of tube shield rupture accidents.

[0077] This application uses the thickness of multiple oxide scale deposits as the basis for evaluating the condition of the heated surface tube screen. When any oxide scale deposit thickness reaches a preset deposit thickness value, a corresponding early warning message is generated. Before any abnormality occurs in the heated surface tube screen, the abnormal condition or potential hazards of the heated surface tube screen can be detected in time, thereby effectively reducing the occurrence of tube screen explosion accidents.

[0078] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0079] See Figure 1 This figure is a flowchart of a method for early warning of the state of a heated surface tube screen according to an embodiment of this application. The embodiment of this application provides a method for early warning of the state of a heated surface tube screen, including steps S101 to S106.

[0080] S101: Divide the tube screen into multiple tube screen nodes along the tube wall direction.

[0081] Specifically, to obtain a more accurate state of the heated tube screen, the tube screen can be divided into multiple tube screen nodes along the flow direction of the working fluid in the tube. For example, dividing the tube screen into 128 parts along the flow direction of the working fluid in the tube will yield 128 tube screen nodes.

[0082] S102: Obtain multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system.

[0083] Specifically, a temperature measurement system can be used to acquire multiple inner wall temperature information corresponding to the multiple tube panel nodes. This temperature measurement system can consist of heat collection blocks, protective sleeves, armored thermocouples, and intelligent temperature front-ends. The control system data includes unit load, coal quality, coal feed rate, steam temperature, and steam pressure.

[0084] S103: Calculate the multiple outer wall temperature information corresponding to the multiple inner wall temperature information and the data information of the control system.

[0085] Obtain multiple outer wall temperature information corresponding to multiple tube screen nodes, so as to calculate the multiple oxide scale formation thicknesses corresponding to multiple tube screen nodes in subsequent calculations.

[0086] S104: Calculate the oxide scale generation thickness corresponding to the multiple outer wall temperature information and the data information of the control system.

[0087] Oxide scale is a corrosion product formed on metal surfaces due to oxidation at high temperatures. High-temperature oxygen-containing steam conditions drastically increase the rate of oxide scale formation inside the tube wall. Since the coefficients of thermal expansion of oxide scale and the austenitic stainless steel base material differ significantly, when the oxide scale reaches a certain thickness, it may peel off from the metal surface, causing the tube wall to continuously thin, thereby weakening the tube's pressure-bearing capacity and shortening its lifespan. Based on the multiple outer wall temperature information and the data from the control system, multiple oxide scale thicknesses corresponding to multiple tube wall nodes can be obtained. By understanding the multiple oxide scale thicknesses, the condition of the heated tube wall surface can be assessed, facilitating timely detection and maintenance of potential problems. Furthermore, it facilitates subsequent calculations to obtain the multiple oxide scale accumulation thicknesses corresponding to multiple tube wall nodes.

[0088] S105: Based on the multiple oxide scale generation thicknesses, the preset first critical thickness value, and the preset second critical thickness value, obtain the multiple oxide scale stacking thicknesses corresponding to the multiple tube screen nodes.

[0089] The flaking oxide scale accumulates at the bottom of the tube screen, clogging the pipes and reducing the heat exchange capacity of the working fluid. This leads to increased temperature rise in the tube screen wall and can cause the tube screen to burst. Obtaining the oxide scale accumulation thickness for multiple tube screen nodes allows for monitoring of the heated surface tube screen status and facilitates the generation of corresponding early warning information based on the oxide scale accumulation thickness.

[0090] S106: When any one of the multiple oxide scale stacking thicknesses reaches a preset stacking thickness value, an early warning message corresponding to the preset stacking thickness value is generated.

[0091] The oxide scale thickness is used as the basis for judging the status of the tube screen. When the oxide scale thickness reaches a preset thickness value, an early warning message corresponding to the preset thickness value is generated. Based on the early warning message, the heated surface tube screen is inspected and repaired in a timely manner, thereby effectively reducing the occurrence of tube screen explosion accidents.

[0092] The method provided in this application embodiment can obtain the thickness of multiple oxide scales corresponding to multiple tube screen nodes in real time. The thickness of multiple oxide scales is used as the basis for evaluating the state of the heated surface tube screen. When any of the multiple oxide scales reaches the preset thickness value, the corresponding early warning information is generated. The state of the high-temperature heated surface tube screen can be accurately evaluated. Based on the early warning information, the heated surface tube screen can be repaired or the combustion in the furnace can be adjusted in a timely manner, effectively reducing the occurrence of tube screen explosion accidents.

[0093] Furthermore, S103 can be implemented through S201 to S202.

[0094] S201: Based on the multiple inner wall temperature information and the data information of the control system, the multiple heat flux densities are obtained through numerical simulation calculation.

[0095] Specifically, different operating conditions, different coal qualities, and different grinding combinations may lead to different heat flux densities. Multiple heat flux densities corresponding to multiple tube screen nodes are obtained in order to calculate multiple outer wall temperature information in the future.

[0096] S202: Calculate the multiple outer wall temperature information based on the multiple inner wall temperature information, the data information of the control system, and the multiple heat flux densities.

[0097] Specifically, edge computing can be used to calculate multiple outer wall temperature information using formulas (1)-(2).

[0098]

[0099]

[0100] In the formula, twbi represents the outer wall temperature in °C; tgzi represents the inner wall temperature in °C; β represents the ratio of the outer diameter to the inner diameter of the tube screen; d represents the outer diameter of the tube screen in mm; δ represents the tube wall thickness in mm; and qw represents the heat flux density in W / m³. 2 μ is the heat dissipation coefficient; α2 is the heat transfer coefficient inside the tube, in W / (m²). 2 λM is the thermal conductivity of the pipe wall, with units of W / (m·K), and its value is related to the steel and temperature.

[0101] Furthermore, S104 can be implemented through S301 to S302.

[0102] S301: Perform unit conversion on the multiple outer wall temperature information to obtain multiple converted outer wall temperature information.

[0103] Specifically, multiple outer wall temperature information is converted into Kelvin temperature to obtain multiple converted outer wall temperature information.

[0104] S302: Calculate the oxide scale generation thickness corresponding to the multiple tube screen nodes based on the multiple converted outer wall temperature information and the data information of the control system.

[0105] Specifically, the thickness of multiple oxide scale formations can be calculated using formula (3).

[0106]

[0107] In the formula, X represents the thickness of the oxide layer in μm; A is the Alleneus constant in μm. 2 / h; Q is the activation energy for process rate control, in J / mol; R is the gas constant, which can be set to 8.314 J / (mol·K); T is the outer wall temperature after conversion, in K; t h This refers to the effective operating time of the unit, measured in hours (h). A and Q are related to the composition of the metallic composite materials. For example, when the tube panel material is high-carbon niobium-chromium-nickel austenitic stainless steel (TP347H), A = 105 μm. 2 / h, Q=85500J / mol.

[0108] Furthermore, S105 can be implemented through S401 to S403, see [link to relevant documentation]. Figure 2 The figure is a flowchart of a method for obtaining oxide scale deposition thickness provided in an embodiment of this application.

[0109] S401: Based on the multiple oxide scale formation thicknesses and the first critical thickness value, determine the multiple first peeling counts corresponding to the multiple tube screen nodes.

[0110] S402: Based on the multiple oxide scale formation thicknesses and the second critical thickness value, determine the multiple second shedding counts corresponding to the multiple tube screen nodes.

[0111] S403: Obtain the multiple oxide scale build-up thicknesses based on the first critical thickness value, the second critical thickness value, the multiple first peeling times, and the multiple second peeling times.

[0112] Specifically, multiple oxide scale thicknesses can be obtained using formula (4).

[0113]

[0114] In the formula, ∑X represents the oxide scale buildup thickness; X1 is the first critical thickness value, specifically referring to the critical thickness at which the oxide scale on the high-temperature heated surface begins to peel off; n i X1 represents the first number of times the oxide scale detaches, specifically the number of times it detaches when the scale reaches a critical thickness value within the effective operating time; X2 represents the second critical thickness value, specifically the critical thickness value at which the oxide scale on the high-temperature heated surface begins to peel off during furnace start-up, shutdown, or load changes; n j The second shedding number refers to the number of times the oxide scale reaches the critical thickness value during the start-up, shutdown, or load change within the effective operating time; m is the number of calculation nodes from the tube screen inlet to the outlet; ξ is the coefficient that is not carried to the next node by the working fluid.

[0115] Furthermore, multiple inner wall temperature information in S101 can be realized through S501 to S502.

[0116] S501: Obtain the inner wall temperature information of the tube screen opening and the total heat absorption of the tube screen.

[0117] Specifically, a temperature measurement system can be installed at the opening of a high-temperature heated surface tube screen to measure the inner wall temperature of the tube screen opening. Furthermore, since the working fluid temperature at the tube screen opening is approximately the same as the inner wall temperature of the tube screen opening, the inner wall temperature of the tube screen opening can be obtained by measuring the working fluid temperature at the tube screen opening.

[0118] S502: Obtain the multiple inner wall temperature information based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the position information of the multiple tube screen nodes.

[0119] Specifically, based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the location information of multiple tube screen nodes, multiple inner wall temperature information can be obtained by calculation, thereby reducing equipment costs while ensuring measurement accuracy.

[0120] Furthermore, the above-mentioned S106 can be implemented in the following way:

[0121] If any one of the multiple oxide scale build-up thicknesses reaches the first build-up thickness value, a cleaning warning message is generated.

[0122] If any one of the multiple oxide scale build-up thicknesses reaches the second build-up thickness value, a maintenance warning message is generated.

[0123] Specifically, for example, when the tube material is TP347H, a cleaning warning is generated when the oxide scale buildup thickness exceeds 17.272 mm; a maintenance warning is generated when the oxide scale buildup thickness exceeds 25.4 mm. Therefore, the tube panel can be cleaned or maintained promptly based on the cleaning or maintenance warning information, effectively reducing the occurrence of tube panel leaks.

[0124] Furthermore, it also includes S601 to S602:

[0125] S601: Based on the multiple outer wall temperature information, the multiple outer wall temperature information and the multiple oxide scale generation thickness, generate multiple display information corresponding to the multiple tube screen nodes.

[0126] Specifically, the displayed information includes outer wall temperature information and oxide scale formation thickness.

[0127] S602: Display the multiple display information according to the multiple display information.

[0128] Specifically, by displaying the aforementioned multiple information items, it is convenient to monitor the status of the high-temperature heating surface tube screen in real time, effectively reducing the occurrence of tube screen explosion and leakage accidents, and at the same time, it is beneficial to provide data support for adjusting combustion in the furnace and overhauling the tube screen.

[0129] This application also provides an early warning device for the state of the heated surface tube screen, see [link to relevant documentation]. Figure 3 This figure is a schematic diagram of the structure of an early warning device for the state of a heated surface tube screen provided in an embodiment of this application. Its specific implementation method and the achieved technical effects are consistent with those described in the embodiments of the above method, and some details will not be repeated here.

[0130] An early warning device for the condition of a heated surface tube screen, comprising:

[0131] The module comprises a partitioning module 1101, an acquisition module 1102, a first calculation module 1103, a second calculation module 1104, an acquisition module 1105, and a generation module 1106.

[0132] The division module 1101 is used to divide the tube screen into multiple tube screen nodes along the tube wall direction;

[0133] The acquisition module 1102 is used to acquire multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system.

[0134] The first calculation module 1103 is used to calculate multiple outer wall temperature information corresponding to the multiple inner wall temperature information and the data information of the control system.

[0135] The second calculation module 1104 is used to calculate the oxide scale generation thickness corresponding to the multiple outer wall temperature information and the data information of the control system.

[0136] The obtaining module 1105 is used to obtain the multiple oxide scale stacking thicknesses corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses, a preset first critical thickness value, and a preset second critical thickness value.

[0137] The generation module 1106 is used to generate a warning message corresponding to the preset stacking thickness value when any one of the multiple oxide scale stacking thicknesses reaches the preset stacking thickness value.

[0138] Further, the first computing module includes:

[0139] First acquisition unit and first calculation unit;

[0140] The first obtaining unit is used to obtain the multiple heat flux densities through numerical simulation calculation based on the multiple inner wall temperature information and the data information of the control system;

[0141] The first calculation unit is used to calculate the multiple outer wall temperature information based on the multiple inner wall temperature information, the data information of the control system, and the multiple heat flux densities.

[0142] Furthermore, the second computing module includes:

[0143] Second acquisition unit and second calculation unit;

[0144] The second obtaining unit is used to perform unit conversion on the multiple outer wall temperature information to obtain multiple converted outer wall temperature information;

[0145] The second calculation unit is used to calculate the oxide scale generation thickness corresponding to the multiple tube screen nodes based on the multiple converted outer wall temperature information and the data information of the control system.

[0146] Further, the obtaining module includes:

[0147] The first determining unit, the second determining unit, and the third obtaining unit;

[0148] The first determining unit is used to determine multiple first detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses and the first critical thickness value;

[0149] The second determining unit is used to determine multiple second detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale generation thicknesses and the second critical thickness value;

[0150] The third obtaining unit is used to obtain the plurality of oxide scale accumulation thicknesses based on the first critical thickness value, the second critical thickness value, the plurality of first peeling times, and the plurality of second peeling times.

[0151] Furthermore, the acquisition module includes:

[0152] Acquisition unit and fourth acquisition unit;

[0153] The acquisition unit is used to acquire the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the data information of the control system;

[0154] The fourth obtaining unit is used to obtain the multiple inner wall temperature information based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the position information of the multiple tube screen nodes.

[0155] Furthermore, the generation module is used for:

[0156] If any one of the multiple oxide scale build-up thicknesses reaches the first build-up thickness value, a cleaning warning message is generated.

[0157] If any one of the multiple oxide scale build-up thicknesses reaches the second build-up thickness value, a maintenance warning message is generated.

[0158] Furthermore, it also includes:

[0159] Generation unit and display unit;

[0160] The generation unit is used to generate multiple display information corresponding to the multiple tube screen nodes based on the multiple outer wall temperature information, the multiple outer wall temperature information and the multiple oxide scale generation thickness;

[0161] The display unit is used to display the multiple display information according to the multiple display information.

[0162] In summary, the device provided in this application embodiment can obtain the thickness of multiple oxide scales corresponding to multiple tube screen nodes in real time. The thickness of multiple oxide scales is used as the basis for evaluating the state of the heated surface tube screen. When any of the multiple oxide scales reaches the preset thickness value, the corresponding early warning information is generated. The state of the high-temperature heated surface tube screen can be accurately evaluated. Based on the early warning information, the heated surface tube screen can be repaired or the combustion in the furnace can be adjusted in a timely manner, effectively reducing the occurrence of tube screen explosion accidents.

[0163] This application embodiment also provides a computer device, the computer device including a processor and a memory:

[0164] The memory is used to store program code and transmit the program code to the processor;

[0165] The processor is used to execute the steps of a pre-warning method for the state of a heated surface tube screen as described above, according to the instructions in the program code.

[0166] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of a pre-warning method for the state of a heated surface tube screen as described above.

[0167] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the embodiments of apparatus, devices, and storage media, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments. The apparatus, devices, and storage media embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components indicated 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 modules can be selected to achieve the purpose of the solution in this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0168] The above description is merely one specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of providing an early warning of a condition of a heat receiving surface tube panel, characterized by, include: The tube screen is divided into multiple tube screen nodes along the tube wall direction; Acquire multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system; Based on the multiple inner wall temperature information and the data information of the control system, calculate the multiple outer wall temperature information corresponding to the multiple tube screen nodes; Based on the multiple outer wall temperature information and the data information of the control system, the multiple oxide scale formation thicknesses corresponding to the multiple tube screen nodes are calculated; Based on the multiple oxide scale formation thicknesses and the first critical thickness value, multiple first detachment counts corresponding to the multiple tube screen nodes are determined; wherein, the first critical thickness value is the critical thickness value at which the oxide scale on the high-temperature heating surface begins to detach, and the first detachment count is the number of detachments when the oxide scale reaches the critical thickness value within the effective operating time; based on the multiple oxide scale formation thicknesses and the second critical thickness value, multiple second detachment counts corresponding to the multiple tube screen nodes are determined; wherein, the second critical thickness value is the critical thickness value at which the oxide scale on the high-temperature heating surface begins to detach when the furnace is started up, stopped, or the load changes, and the second detachment count is the number of detachments when the oxide scale reaches the critical thickness value during the effective operating time; based on the first critical thickness value, the second critical thickness value, the multiple first detachment counts, and the multiple second detachment counts, multiple oxide scale accumulation thicknesses are obtained; When any one of the multiple oxide scale build-up thicknesses reaches a preset build-up thickness value, an early warning message corresponding to the preset build-up thickness value is generated.

2. The method according to claim 1, characterized in that, The step of calculating multiple outer wall temperature information corresponding to the multiple pipe screen nodes based on the multiple inner wall temperature information and the data information of the control system includes: Based on the multiple inner wall temperature information and the data information of the control system, multiple heat flux densities are obtained through numerical simulation calculation; The multiple outer wall temperature information is calculated based on the multiple inner wall temperature information, the data information of the control system, and the multiple heat flux densities.

3. The method according to claim 1, characterized in that, The step of calculating the oxide scale thickness corresponding to the multiple pipe screen nodes based on the multiple outer wall temperature information and the data information of the control system includes: The units of the multiple outer wall temperature information are converted to obtain multiple converted outer wall temperature information; Based on the multiple converted outer wall temperature information and the data information of the control system, the multiple oxide scale formation thicknesses corresponding to the multiple tube screen nodes are calculated.

4. The method according to claim 1, characterized in that, The step of obtaining multiple inner wall temperature information corresponding to the multiple tube screen nodes includes: Obtain the inner wall temperature information of the tube screen opening and the total heat absorption of the tube screen; The multiple inner wall temperature information is obtained based on the inner wall temperature information of the tube screen opening, the total heat absorption of the tube screen, and the position information of the multiple tube screen nodes.

5. The method according to claim 1, characterized in that, When any one of the plurality of oxide scale build-up thicknesses reaches a preset build-up thickness value, a warning message corresponding to the preset build-up thickness value is generated, including: If any one of the multiple oxide scale build-up thicknesses reaches the first build-up thickness value, a cleaning warning message is generated. If any one of the multiple oxide scale build-up thicknesses reaches the second build-up thickness value, a maintenance warning message is generated.

6. The method according to any one of claims 1-5, characterized in that, Also includes: Based on the multiple outer wall temperature information, the multiple outer wall temperature information and the multiple oxide scale formation thickness, multiple display information corresponding to the multiple tube screen nodes is generated; Based on the multiple display information, display the multiple display information.

7. An early warning device for the state of a heated surface tube screen, characterized in that, include: The module is divided into a partitioning module, an acquisition module, a first calculation module, a second calculation module, an acquisition module, and a generation module. The partitioning module is used to divide the tube screen into multiple tube screen nodes along the tube wall direction; The acquisition module is used to acquire multiple inner wall temperature information corresponding to the multiple tube screen nodes and data information of the control system; The first calculation module is used to calculate multiple outer wall temperature information corresponding to the multiple inner wall temperature information and the data information of the control system; The second calculation module is used to calculate the oxide scale generation thickness corresponding to the multiple outer wall temperature information and the data information of the control system. The obtaining module is used to determine multiple first detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale formation thicknesses and the first critical thickness value; wherein, the first critical thickness value is the critical thickness value at which the oxide scale on the high-temperature heating surface begins to detach, and the first detachment count is the number of detachments when the oxide scale reaches the critical thickness value within the effective operating time; and to determine multiple second detachment counts corresponding to the multiple tube screen nodes based on the multiple oxide scale formation thicknesses and the second critical thickness value; wherein, the second critical thickness value is the critical thickness value at which the oxide scale on the high-temperature heating surface begins to detach when the furnace is started up, stopped, or the load changes, and the second detachment count is the number of detachments when the oxide scale reaches the critical thickness value during the effective operating time; and to obtain multiple oxide scale accumulation thicknesses based on the first critical thickness value, the second critical thickness value, the multiple first detachment counts, and the multiple second detachment counts; The generation module is used to generate a warning message corresponding to the preset stacking thickness value when any one of the multiple oxide scale stacking thicknesses reaches the preset stacking thickness value.

8. A computer device, characterized in that, The computer device includes a processor and memory: The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute, according to the instructions in the program code, the steps of a method for early warning of the state of a heated surface tube screen as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of a method for early warning of the state of a heated surface tube screen as described in any one of claims 1-6.

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