A maintenance data marking method and system for boiler water wall tube maintenance

Abstract

The present application discloses a maintenance data marking method and system for the maintenance of boiler water-wall tubes. The method first obtains the inspection position of each furnace tube channel of the boiler water-wall tube to be inspected, and the historical maintenance data of each inspection position is stored in a passive RFID tag. The method then reads the maintenance data stored in the passive RFID tag corresponding to the inspection position, and performs position verification on the inspection position based on the read maintenance data. The furnace tube is then inspected to obtain new inspection data. Finally, the newly obtained inspection data is written into the passive RFID tag corresponding to the inspection position. Because the inspection data is marked and stored by the passive RFID tag, and the passive RFID tag corresponds one-to-one with the inspection position, the positioning accuracy of the inspection furnace tube of the boiler water-wall tube is improved, the storage process of the inspection data is simplified, and the maintenance efficiency and quality of the boiler furnace tube are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of safe operation of power plants, and in particular to a maintenance data marking method and system for the maintenance of boiler water-cooled wall tubes. Background Art

[0002] The three main components of a power plant are the boiler, steam turbine, and generator. The boiler includes water-cooled walls. Due to stringent safety requirements, these water-wall tubes must undergo regular maintenance or real-time monitoring (monitoring data includes deformation, wall thickness, temperature, flow rate, and / or hydraulic pressure). With the advancement of digital technology, the maintenance data collected during boiler water-wall tube maintenance must also be managed digitally. For example, a digital twin system can be used to create a real-time digital replica of the boiler water-wall tubes. This replica utilizes a digital graphical model (digital modeling), sensor data, operational history, and historical maintenance data to simulate the state, behavior, and performance of the entity. Digital twin systems design digital graphical models based on the modeling of individual components (relying on the need to distinguish between individual components and to facilitate display based on the relative spatial or logical dependencies between them).

[0003] Please refer to Figure 1 , is a schematic diagram of the boiler water wall tube arrangement. Boiler water wall tubes are often arranged in a zigzag pattern. In the digital twin system, the entire boiler water wall tube channel is predefined as a single element and modeled as an integrated whole. However, when inspecting the boiler water wall tubes, instead of performing a full inspection of the entire tube, random sampling inspections or sampling inspections are performed in a pre-set time sequence. That is, in the tube channel (especially Figure 1 In the case of a tortuous pipeline (such as the one shown in the figure), several sections to be inspected are selected for inspection to obtain inspection data at multiple different positions. When the obtained inspection data are annotated with the inspection information of the digital pipeline corresponding to the digital model, confusion will occur, so that a single long pipeline (an independent unit) contains multiple inspection data, and each inspection data and its corresponding actual inspection position are also easily confused. Summary of the Invention

[0004] The main technical problem solved by the present invention is how to accurately mark and record the maintenance data and maintenance positions of boiler water-cooled wall tubes.

[0005] According to the first aspect, an embodiment provides a method for marking maintenance data for boiler water wall tube maintenance, comprising:

[0006] Obtaining the inspection position of each furnace tube channel of the boiler water-cooled wall tube to be inspected, each inspection position is marked by an inspection point; wherein a passive RFID tag is fixedly set at each inspection point, and the passive RFID tag stores historical inspection data of the inspection position corresponding to the inspection point;

[0007] Reading the maintenance data stored in the passive RFID tag on the detection point corresponding to the maintenance position of the furnace tube channel to be inspected, and performing position verification on the detection position of the furnace tube channel to be inspected based on the read maintenance data;

[0008] When the position verification is correct, the detection position of the furnace tube channel to be inspected is inspected to obtain new detection data;

[0009] The new detection data is written into the passive RFID tag at the detection point corresponding to the detection position to serve as maintenance data storage for the detection position.

[0010] In one embodiment, the maintenance data marking method further includes:

[0011] The passive RFID tag compares the new detection data with the historical detection data, and when the comparison result is not greater than a preset comparison threshold, saves the new detection data or replaces the historical detection data;

[0012] When the comparison result is greater than the preset comparison threshold, the detection position of the furnace tube channel is reminded to be re-detected or the data abnormality is notified by feeding back data abnormal prompt information to reconfirm the correctness of the new detection data.

[0013] In one embodiment, obtaining the detection position of each furnace tube channel of the boiler water-wall tube to be repaired includes:

[0014] Generate and graphically display the maintenance data of the boiler water-wall tubes; the graphical display is performed by digitally modeling the boiler water-wall tubes to obtain a digital graphical model of each furnace tube channel of the boiler water-wall tubes; wherein the digital graphical model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain pipeline division units, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit; each pipeline division unit corresponds to a detection point, and each detection point corresponds to a detection position of the furnace tube channel;

[0015] According to a preset maintenance screening rule, a preset number of the pipeline division units are selected in the digital graphic model based on the historical maintenance data of the boiler water-wall tubes, and used as the inspection positions of the furnace tube channels to be inspected when the boiler water-wall tubes are to be inspected next time;

[0016] The detection point corresponding to each selected pipeline dividing unit is used as the detection position of the furnace tube channel to be detected next time.

[0017] In one embodiment, each of the detection points is disposed at the detection position of the corresponding furnace tube channel, and the passive RFID tag is disposed at the detection point;

[0018] Alternatively, each detection point is provided on a detection marking plate, and the passive RFID tag is provided on the detection point; wherein a planar schematic diagram of the furnace tube channel is drawn on the detection marking plate, and each detection position marked on the planar schematic diagram corresponds to a detection point.

[0019] In one embodiment, the passive RFID tag includes an antenna, a power acquisition circuit, a communication circuit, and a storage control circuit;

[0020] The antenna is used to receive the radio frequency signal transmitted by the radio frequency reader;

[0021] The power acquisition circuit is used to convert the radio frequency signal into direct current to provide working power for the passive RFID tag;

[0022] The storage control circuit is used to perform data communication with the radio frequency reader through a communication circuit to obtain detection data.

[0023] In one embodiment, the passive RFID tag further includes an indication circuit for identifying or indicating whether the storage of the detection data is abnormal; wherein the indication method of the indication circuit includes sound indication or light indication.

[0024] In one embodiment, the maintenance data stored in the passive RFID tag includes ID information, detection data, maintenance time, maintenance type, maintenance method, maintenance personnel information and / or other remarks;

[0025] The methods for obtaining ID information include:

[0026] Grid division is performed based on the physical parameters of the furnace tube channel of the water-cooled fireplace tube of the boiler, so as to divide each detection position into a grid area, each grid area includes at least one grid cell, and each grid cell includes at least one detection position of the furnace tube channel; wherein each grid area contains a furnace tube component of the furnace tube channel; the furnace tube component includes a straight tube, an angled tube, a connecting tube and / or a connecting valve, and the physical parameters include the spatial shape, spatial size and spatial position of the furnace tube channel;

[0027] Uniquely numbering each of the grid areas and the grid units according to a preset numbering rule;

[0028] Using the number of the grid unit as the ID information corresponding to the detection position in the grid unit;

[0029] The numbering rules include:

[0030] The number of the grid unit has an inheritance relationship with the number of the grid area where it is located;

[0031] The numbers of the grid areas have a unique corresponding relationship with the names of the furnace tube components contained therein.

[0032] According to the second aspect, an embodiment provides a computer-readable storage medium, on which a computer program is stored. The computer program can be executed by a processor to implement the maintenance data marking method as described in the first aspect.

[0033] According to the third aspect, an embodiment provides a computer program product, comprising a computer program and / or instructions, which, when executed by a processor, implement the maintenance data marking method as described in the first aspect.

[0034] According to a fourth aspect, an embodiment provides a maintenance data marking system for boiler water wall tube maintenance, for applying the maintenance data marking method according to the first aspect, the maintenance data marking system comprising:

[0035] A detection point acquisition module is used to obtain the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, and each detection position is marked by a detection point; wherein a passive RFID tag is fixedly set at each detection point, and the passive RFID tag stores the historical maintenance data of the detection position corresponding to the detection point;

[0036] a data acquisition module, configured to read the maintenance data stored in the passive RFID tag at the detection point corresponding to the detection position of the furnace tube channel to be inspected, and perform position verification on the detection position of the furnace tube channel to be inspected based on the read maintenance data;

[0037] A detection module, used for detecting the detection position of the furnace tube channel to be repaired to obtain new detection data;

[0038] The data recording module is used to write the new detection data into the passive RFID tag on the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0039] According to the maintenance data marking method of the above embodiment, since the maintenance data is marked and stored by passive RFID tags, and the passive RFID tags correspond one-to-one to the maintenance positions, the positioning accuracy of the maintenance furnace tubes of the boiler water-cooled wall tubes is improved, and the storage process of the maintenance data is simplified, thereby greatly improving the maintenance efficiency and quality of the boiler furnace tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the piping arrangement for the boiler water wall tubes;

[0041] Figure 2 A schematic diagram of a furnace tube channel inspection and maintenance marking form;

[0042] Figure 3 A schematic flow chart of a maintenance data display method according to an embodiment;

[0043] Figure 4 A schematic diagram of the division of a digital graphic model of a furnace tube channel in one embodiment;

[0044] Figure 5 A schematic diagram of a geometric display method of a pipeline division unit in one embodiment;

[0045] Figure 6 is a schematic diagram of merging multiple pipeline division units in a first merging manner in an embodiment;

[0046] Figure 7 is a schematic diagram of merging multiple pipeline division units in a second merging manner in an embodiment;

[0047] Figure 8 It is a structural block diagram of a maintenance data display system in one embodiment;

[0048] Figure 9 This is a schematic diagram of the working principle of a passive RFID tag;

[0049] Figure 10A schematic diagram of a flow chart of a method for marking maintenance data in an embodiment;

[0050] Figure 11 A schematic plan view of a detection board in one embodiment;

[0051] Figure 12 A method for obtaining ID information of a passive RFID tag in an embodiment;

[0052] Figure 13 Schematic diagram of the structure of a maintenance data marking system in one embodiment. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0054] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0055] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0056] Please refer to Figure 2, is a schematic diagram of a detection and maintenance marking table for a furnace tube channel. Existing tube detection and maintenance methods for boiler tube channels are all based on on-site detection of the furnace tube body object, and are summarized into a data table according to the tube number and elevation. Since a two-dimensional table is used to record wall thickness data and marking processing methods, the initial starting point is only to facilitate the recording of actual maintenance measurements, and it is not convenient for statistics and intuitive viewing of maintenance and inspection records and data, especially when users need to superimpose and compare data from multiple inspections and maintenance (including multiple historical data). However, when performing three-dimensional digital modeling of boiler tube channels, it is difficult to accurately display the detection position due to the large number of boiler tubes (there may be more than 160 tubes on a single tube wall) and the large span of the height range of a single tube. However, in the actual inspection process, marking is indeed carried out at a certain height. If a separate 3D model is performed for each inspection position, the original digitally modeled pipe wall will be physically divided into multiple sections. This processing method not only requires secondary processing of the original model, but also recalibration and matching of the divided data. The workload is huge and prone to errors. Even if the processing is completed, because the object is generated by polygonal segmentation, redundant polygon vertices will be generated, causing differences in the objects after the furnace pipe is segmented. It cannot be submitted to the GPU for rendering through object or material instance batching, resulting in additional rendering and storage overhead.

[0057] The marking and recording of boiler water-wall tube maintenance data involves two aspects: the annotation of maintenance data for digitally modeled digital pipelines, and the labeling of each actual maintenance location within the furnace tube channel. In addition to clearly identifying the corresponding relationships, the maintenance history of each location must also be clearly labeled. Even for spot checks, the selection of inspection locations during each furnace tube channel inspection must adhere to certain inspection cycle constraints. Specifically, the interval between inspections for each inspected section of the furnace tube channel must not exceed a preset time. This means that within a preset inspection cycle (the inspection cycle is set to the preset time), each section of the furnace tube channel must be inspected at least once. For example, the preset inspection cycle is one year, with at least one spot check per month. Each spot check covers at least 12 inspection points, and the interval between two inspections (the previous inspection and the current inspection) for each inspection point cannot exceed one year. Each section of the furnace tube channel must be inspected at least once within this year. Any inspection location with abnormal data (increases or decreases in value) or with a maintenance history must undergo at least one additional inspection.

[0058] Based on the above requirements, spot check inspection points must be pre-determined during the actual inspection of the boiler water-wall tube channels. Furthermore, during a spot check, the completion of each inspection point must be marked in real time to determine the inspection sequence and inspection status (inspected or not) for each inspection location. However, in actual inspections, the working environment is not ideal, and in most cases, the inspection process cannot be completed according to the preset inspection sequence. This is especially true when comparing historical data (inspected data must be compared with historical data, and if the difference exceeds the preset value, re-inspection and confirmation is required). When a specific inspection point needs to be re-inspected, determining the inspection point location and verifying historical data (including the current inspection data) are extremely difficult and tedious. Experienced staff typically label the inspection points, but manual labeling can lead to errors (which is fine when done by a single person, but the error rate is extremely high when multiple people collaborate).

[0059] Example 1:

[0060] In this embodiment, the labeling and display of digital pipeline inspection data is performed without segmenting the digitally modeled pipeline model. Specifically, the pipeline is segmented according to preset pipeline inspection and maintenance rules to obtain pipeline segmentation units corresponding to the inspection location. Specifically, the spatial extent of each pipe wall is generally calibrated to determine the overall length, width, and height of the marked area. Then, based on the data range (rows and columns in the data list) contained within the marked area, a specified polygon array is created to subdivide the marked area (pipeline segmentation unit). Furthermore, a virtual marker is generated from the array. Each pipeline segmentation unit can be defined as a polygonal object of any shape and a label material applied. Different colors and textures are used to visualize the wall thickness inspection information for the entire area. Furthermore, to cope with a large amount of pipe wall and segmentation information, a mechanism can be designed to merge and display statistical information (merging multiple pipeline segmentation units into a unified segmentation area). Based on the configured merging parameters, users can view the statistical information (displayed as segmentation areas) from a certain distance through the merged grid.

[0061] Please refer to Figure 3 , which is a flow chart of a maintenance data display method in one embodiment, and the maintenance data display method for boiler water wall tube maintenance specifically includes:

[0062] Step 101: Open the graphical display interface.

[0063] The maintenance data of the boiler water wall tubes is generated and graphically displayed. The graphical display is performed by digitally modeling the boiler water wall tubes to obtain a digital graphical model of each furnace tube channel of the boiler water wall tubes. The digital graphical model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain pipeline division units, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit.

[0064] In one embodiment, the pipeline division unit division method includes:

[0065] First, a three-dimensional identification area is created based on the size, spatial range, and spatial position of the furnace tube channel;

[0066] Then, the preset three-dimensional marking object is segmented into a three-dimensional array in the three-dimensional marking area, wherein the three-dimensional array includes a row array, a column array and a layer array.

[0067] Next, creating a pipeline division unit in the three-dimensional array within the three-dimensional identification area, marking the corresponding furnace pipe channel detection position;

[0068] Finally, the detection data of each detection position of the furnace tube channel is updated to the corresponding pipeline division unit.

[0069] Please refer to Figure 4 , which is a schematic diagram of the division of the digital graphic model of the furnace tube channel in an embodiment. In one embodiment, the division is performed by creating an identification array, and the digital graphic model of the furnace tube channel is numbered according to the horizontal and vertical axis objects. Then, identification data is associated with each pipeline division unit obtained by the division, and the identification status of each pipeline division unit is set according to the value range of the identification data, and the maintenance data of the corresponding pipeline division unit is displayed in preset different colors.

[0070] Please refer to Figure 5 , is a schematic diagram of the geometric display mode of the pipeline division unit in an embodiment. In one embodiment, each pipeline division unit is individually graphically displayed with a preset geometric figure, wherein the geometric figure includes a cuboid, a cube, a sphere, a cylinder, a cone and / or a falling water bead. Figure 5 In the figure, the geometric shapes of the pipeline division units arranged from top to bottom and from left to right are a cuboid, a sphere, a cone, and a cylinder. In one embodiment, the maintenance data information of each pipeline division unit is identified by a proportional progress bar and / or color differentiation. The maintenance data includes ID information, inspection data, maintenance time, maintenance type, maintenance method, maintenance personnel information, and / or other remarks. In one embodiment, the maintenance data information of pipeline division units with the same historical maintenance data is identified in the same manner.

[0071] Please refer to Figure 6 and Figure 7 , is a schematic diagram of merging multiple pipeline division units using the first merging method and the second merging method in one embodiment. In one embodiment, to facilitate viewing of maintenance data (when the number of pipeline division units is too large or too dense), an additional set of merging parameters is set to merge or subdivide the display of horizontal and vertical array objects based on the user's viewing distance. The merging also considers the remainder of odd-numbered arrays, merging the remainder rows and columns into a smaller merged area unit for display. Figure 6 The pipeline is divided into 20x10 subdivided cells, and the 4x4 merge is set. After two vertical merges, the remaining two rows are merged into one additional row of merged cells. Figure 7 This is the state after dividing the pipeline into 20x10 subdivisions and merging them into 6x6 cells. After three horizontal subdivisions, two columns remain, and after one vertical merge, four rows remain. These cells are then merged into smaller rows and columns. In this implementation, when visualizing the merged area cells, the visualization object also supports statistics and display of problematic content based on the pre-merger subdivision content.

[0072] Step 102: Select a preset number of pipeline division units.

[0073] According to preset inspection and maintenance screening rules and based on historical inspection and maintenance data for the boiler water-wall tubes, a preset number of pipe division units are selected from the digital graphical model to serve as inspection locations for the furnace tube channels to be inspected or maintained during the next inspection or maintenance of the boiler water-wall tubes. The pipe inspection and maintenance division rules include: each pipe division unit corresponds to a single inspection point for at least one furnace tube channel; the inspection point is used to identify the inspection location of the furnace tube channel to be inspected or maintained during a single inspection or maintenance of the furnace tube channel.

[0074] In one embodiment, the maintenance screening rules include: within a preset inspection cycle, each inspection position of the furnace tube channel is inspected at least once; the maintenance time between two adjacent inspection positions of any one of the furnace tube channels cannot be greater than a preset time interval; among a preset number of pipeline division units screened at the same time, any two pipeline division units are not adjacent; and pipeline division units whose historical maintenance data changes are greater than an expected threshold are screened out.

[0075] Step 103: perform detection.

[0076] The detection position of the furnace tube channel corresponding to the selected pipeline division unit is detected.

[0077] Step 104: Update the detection data.

[0078] The detection data obtained by the detection is updated to the corresponding pipeline division unit, and the inspection data of the boiler water wall tube is re-graphically displayed. In one embodiment, the method of step 101 is used to graphically display each pipeline division unit.

[0079] In one embodiment, the maintenance data display method further includes:

[0080] Step 105: Data abnormality prompt.

[0081] The updated detection data of the pipeline division unit is compared with the historical detection data of the pipeline division unit. When the comparison result is greater than or less than the expected value, the detection position of the furnace tube channel corresponding to the pipeline division unit is reminded to be re-inspected or the data abnormality is notified by feedback of data abnormality prompt information to reconfirm the updated detection data of the pipeline division unit.

[0082] Please refer to Figure 8 , is a block diagram of a maintenance data display system in one embodiment. In one embodiment of the present application, a maintenance data display system is also disclosed, which is used to apply the maintenance data display method described above. The maintenance data display system includes a display device 11, a detection point selection device 12, a maintenance device 13, and a data updating device 14. The display device 11 is used to generate and graphically display maintenance data for boiler water-wall tubes. The graphical display is performed by digitally modeling the boiler water-wall tubes to obtain a digital graphical model of each furnace tube channel in the boiler water-wall tubes. The digital graphical model corresponding to the furnace tube channel is divided into regions according to preset pipeline maintenance division rules to obtain pipeline division units, and the historical maintenance data of the furnace tube channels corresponding to the pipeline division units is marked on the pipeline division units. The detection point selection device 12 is used to select a preset number of pipeline division units from the digital graphical model based on the historical maintenance data of the boiler water-wall tubes according to preset maintenance screening rules, as the inspection locations of the furnace tube channels to be inspected or maintained during the next maintenance of the boiler water-wall tubes. The maintenance device 13 is used to detect the inspection locations of the furnace tube channels corresponding to the selected pipeline division units. The data updating device 14 is used to update the detection data obtained by the detection to the corresponding pipeline division unit, and re-graphically display the maintenance data of the boiler water-cooled wall tubes through the display device. In one embodiment, the data updating device 14 is a smart mobile terminal.

[0083] In one embodiment of the present application, the subdivision and merging of pipeline division units are based on the creation of a three-dimensional identification area. This area can be set to any size, position, and rotational orientation, making it particularly suitable for objects with relatively regular patterns and neatly arranged objects, such as furnace tube walls. In this display mode, users can customize the position of the identification area to achieve three-dimensional visual marking of the four furnace tube walls, front, back, left, and right.

[0084] The maintenance data display method disclosed in the above embodiment of the present application first generates and graphically displays the maintenance data of the boiler water-cooled wall tubes, so as to divide the digital graphic model of the digital modeling of the furnace tube channel into regions according to the preset pipeline maintenance division rules, and mark the historical maintenance data corresponding to the maintenance of the furnace tube channel on the pipeline division units obtained by the regional division; then, a preset number of pipeline division units are selected based on the historical maintenance data, and the detection positions of the furnace tube channel corresponding to the selected pipeline division units are used as the maintenance points for the next inspection or maintenance; finally, the detection data obtained from the maintenance points are updated to the corresponding pipeline division units. Since the maintenance position of the furnace tube channel for each maintenance is selected based on the historical maintenance data, the selection of the maintenance position of the furnace tube channel meets the detection cycle limitation mechanism for ensuring the safe operation of the boiler water-cooled wall tubes, thereby ensuring the safe operation of the boiler system.

[0085] Example 2:

[0086] In this embodiment, the marking of each actual maintenance position of the furnace tube channel is involved. The number of water-cooled furnace tubes in the boiler is large and the structure is complex. These furnace tubes are crisscrossed and arranged closely, which makes it very difficult to accurately identify and locate each furnace tube during maintenance. Traditional marking methods are difficult to meet the needs of quickly and accurately finding specific furnace tubes. Therefore, a more systematic and accurate marking device and method are needed to improve maintenance efficiency and accuracy. In addition, the requirements for boiler operation safety and reliability are constantly increasing. Boilers are important equipment for industrial production and energy supply, and the safety and reliability of their operation are of vital importance. As a key component of the boiler, the furnace tube works in harsh environments such as high temperature, high pressure, and corrosion for a long time, and is prone to problems such as wear, corrosion, and cracks. If these problems are not discovered and handled in time, it may cause boiler failure or even cause safety accidents. Therefore, an effective maintenance marking method is also needed to ensure that problematic furnace tubes can be inspected and maintained in a timely manner to ensure the safe operation of the boiler.

[0087] Traditional methods for marking furnace tube inspections include handwritten marking, tag marking, spray marking, and zone numbering. The zone numbering scheme divides the furnace tube area into zones according to certain rules (such as rows, columns, or functional areas), and then numbers the tubes in each zone individually. However, this scheme has three significant drawbacks:

[0088] 1) The boundaries of the zones may be fuzzy. If the boundaries are not clear and intuitive, it is easy for the ownership of the furnace tubes to be unclear at the junction of the zones, leading to confusion during maintenance and positioning.

[0089] 2) Numbering is easily confused. When there are many partitions and a large number of furnace tubes, the numbering is very complicated, and it is easy to have duplicate numbers, omissions, or wrong numbers, which affects the accurate identification of the target furnace tube during maintenance.

[0090] 3) Lack of spatial positioning accuracy. Partition numbers are simply references to areas and individuals, making them unsuitable for maintenance scenarios that require precise understanding of the specific spatial location of furnace tubes within the furnace.

[0091] Based on the above shortcomings, the present embodiment needs to solve the technical problems of maintenance positioning accuracy and maintenance record and traceability difficulties.

[0092] In an embodiment of the present application, a passive RFID tag is used to mark the maintenance location. Passive RFID tags do not require a built-in power supply and work by receiving radio frequency energy emitted by a reader. They have the advantages of low cost, long-distance operation, high data rate and small antenna size, and have broad application prospects, including intelligent transportation transmission systems, asset tracking, supply chain management, logistics and other fields. It does not require battery power, but collects power from the RF electromagnetic waves emitted by the RFID reader to power the entire tag chip. In one embodiment, the passive RFID tag uses a passive ultra-high frequency RFID tag. The passive ultra-high frequency RFID tag has a small physical size and can be embedded in various objects. The energy of the RF electromagnetic waves obtained is high and can support higher-power storage control circuits.

[0093] Please refer to Figure 9 , is a schematic diagram of the working principle of a passive RFID tag. Generally, a passive RFID tag includes an antenna 1, a power acquisition circuit 2, a communication circuit 4, and a storage control circuit 3. Antenna 1 is used to receive the radio frequency signal V transmitted by the radio frequency reader. RF The power acquisition circuit 2 is used to convert the radio frequency signal into direct current to provide working power for the passive RFID tag. The storage control circuit 3 is used to communicate data with the radio frequency reader through the communication circuit 4 to obtain detection data or send historical maintenance data. In one embodiment, the power acquisition circuit 2 includes a rectifier 21, a voltage limiting circuit 22 and a voltage stabilizing power supply circuit 23. The rectifier 21 converts the radio frequency signal V RF Converted into a DC signal V REC Affected by the distance change between the passive RFID tag and the reader, the DC signal V output by the rectifier 21 REC The voltage of the rectifier 21 can vary in a wide range, up to tens of volts, which is beyond the range that the subsequent circuit can carry. Therefore, the output voltage of the rectifier 21 cannot directly power the storage control circuit. The voltage limiting circuit 22 is used to limit the voltage and the DC signal V output by the rectifier 21 REC The voltage value is limited to protect the subsequent circuit from breakdown. RF The voltage limiting circuit 22 does not work when the energy of the radio frequency signal V RFWhen the energy is very large, the voltage limiting circuit 22 starts to discharge the current source to limit the output voltage of the rectifier to output the voltage limiting signal V LIM The voltage-stabilized power supply circuit 23 is used to limit the voltage signal V LIM Perform voltage regulation and rectification to output the power supply signal V DD As the working power supply of the storage control circuit 3. The storage control circuit 3 is connected to the demodulator 41 and the modulator 42 connected to the antenna 1 for data exchange with the reader.

[0094] Based on the passive RFID tag technology, an embodiment of the present application discloses a maintenance data marking method for the maintenance data marking of boiler water wall tubes. Please refer to Figure 10 , is a flow chart of a maintenance data marking method in one embodiment, the maintenance data marking method specifically includes:

[0095] Step 201: Acquire the detection position.

[0096] The inspection location of each boiler tube channel of the boiler water-wall tube to be inspected is obtained, and each inspection location is marked with an inspection point. A passive RFID tag is fixed at each inspection point, and the passive RFID tag stores the historical inspection data of the inspection location corresponding to the inspection point.

[0097] In one embodiment, the method of embodiment 1 is applied to obtain the detection position of the furnace tube channel to be repaired, specifically including:

[0098] First, the maintenance data for the boiler water-wall tubes is generated and graphically displayed. This graphical display involves digitally modeling the boiler water-wall tubes to obtain a digital graphical model of each furnace tube channel. The digital graphical model corresponding to each furnace tube channel is then divided into zones according to pre-set pipeline maintenance division rules to obtain pipe division units. The historical maintenance data for each furnace tube channel corresponding to the corresponding pipe division unit is then marked on the pipe division unit. Each pipe division unit corresponds to a test point, and each test point corresponds to a test location in the furnace tube channel.

[0099] Then, according to the preset maintenance screening rules and based on the historical maintenance data of the boiler water-cooled wall tubes, a preset number of pipe division units are selected in the digital graphic model to be used as the inspection positions of the furnace tube channels to be inspected when the boiler water-cooled wall tubes are inspected next time.

[0100] Finally, the detection point corresponding to each selected pipeline division unit is used as the detection position of the furnace tube channel to be detected next time.

[0101] Step 202: Verify the detection position.

[0102] The maintenance data stored in the passive RFID tag on the detection point corresponding to the maintenance position of the furnace tube channel to be repaired is read, and the detection position of the furnace tube channel to be repaired is positionally verified based on the read maintenance data.

[0103] Step 203: perform detection.

[0104] When the position verification is correct, the detection position of the furnace tube channel to be inspected is inspected to obtain new detection data.

[0105] Step 204: store the detection data.

[0106] The new detection data is written into the passive RFID tag on the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0107] Step 205: Verify the detection data.

[0108] The passive RFID tag compares the new test data with the historical test data. If the comparison result is less than a preset comparison threshold, the new test data is saved or the historical test data is replaced. If the comparison result is greater than the preset comparison threshold, the tag provides a data anomaly prompt to retest the test location in the furnace tube channel or notify the user of the data anomaly, thereby reconfirming the accuracy of the new test data.

[0109] like Figure 9 As shown, in one embodiment, the passive RFID tag further includes an indicator circuit for identifying or indicating whether the storage of the detection data is abnormal. The indicator circuit can provide an indication in the form of an audible or luminous indication. In one embodiment, the indicator circuit includes an indicator light, which provides feedback of abnormality by changing the way the indicator light flashes. In one embodiment, the indicator circuit includes an audio circuit, which provides feedback of abnormality by providing an audible prompt.

[0110] In one embodiment, each detection point is set at its corresponding detection position of the furnace tube channel, and the passive RFID tag is set at the detection point. In one embodiment, the passive RFID tag can be set at the detection point of the furnace tube channel by non-invasive adhesive bonding.

[0111] Please refer to Figure 11 Figure 2 is a schematic plan view of a test board in one embodiment. In one embodiment, each test point is located on a test mark plate, and a passive RFID tag is placed at the test point. The test mark plate depicts a schematic plan view of the furnace tube path, with each test location marked on the schematic corresponding to a test point. Marking the points on the mark plate eliminates the need for marking the boiler water wall tubes, preventing damage to the tubes.

[0112] In one embodiment, the maintenance data stored in the passive RFID tag includes ID information, detection data, maintenance time, maintenance type, maintenance method, maintenance personnel information and / or other remarks information.

[0113] Please refer to Figure 12 , is a method for obtaining ID information of a passive RFID tag in one embodiment. In one embodiment of the present application, a method for obtaining ID information is also disclosed, specifically including:

[0114] Step 301: grid division.

[0115] Grid division is performed based on the physical parameters of the furnace tube channel of the boiler water-cooled fireplace tube, so that each detection location is divided into a grid area. Each grid area includes at least one grid cell, and each grid cell includes at least one detection location of the furnace tube channel. Each grid area contains a furnace tube component of the furnace tube channel. The furnace tube components include straight tubes, angled tubes, connecting tubes, and / or connecting valves. The physical parameters include the spatial shape, spatial dimensions, and spatial location of the furnace tube channel.

[0116] Step 302: numbering.

[0117] Each grid area and grid unit is uniquely numbered according to a preset numbering rule.

[0118] Step 303: Obtain ID information.

[0119] The label of the grid unit is used as the ID information of the detection position in the corresponding grid unit.

[0120] In one embodiment, the numbering rule includes: the number of the grid unit has an inheritance relationship with the number of the grid area where it is located, and the number of the grid area has a unique corresponding relationship with the name of the furnace tube component contained therein.

[0121] This embodiment presents a grid-based method for acquiring ID information for boiler water-cooled manhole tubes, aiming to improve the efficiency and accuracy of boiler water-cooled manhole tube maintenance. By dividing the boiler's internal space into a grid, each section of the furnace tube has unique coordinates and identifiers, making it easier for maintenance personnel to quickly locate and record the status of the furnace tubes. The following describes how to acquire ID information through a specific embodiment, specifically including:

[0122] First, define the ruler grid.

[0123] It can be understood as multiple virtual grids of the same area drawn on the front, rear, left and right walls of the boiler water-cooled wall. There are four grids corresponding to the four walls, and each detection will be based on this grid for point selection and detection.

[0124] Then, define the width and height.

[0125] The width of the grid is equal to the width of 145 furnace tubes + 17 angle flats on a wall, and the height of the grid is equal to the distance between the top sootblower opening and the bottom sootblower opening on the wall (the height of the top sootblower opening is defined as an elevation of 0 meters, and the height of the bottom sootblower opening is defined as an elevation of N meters. The actual height is 30+ meters, and the length measurement unit can be set to 10 cm).

[0126] Next, define the cells.

[0127] Each cell is regarded as a point for furnace tube inspection (in actual inspection, inspection points are selected according to a rule, and not every point is inspected). The cell width is approximately equal to the diameter of a furnace tube, and the cell height is equal to 0.3 meters (during furnace tube inspection, the lifting platform drops 0.6 meters at a time. At this height, the upper and lower sides of the scale can be measured, so the height of each cell is 0.3 meters).

[0128] Finally, define the cell order.

[0129] The left / back walls are numbered clockwise, for example, from left to right:

[0130] Left wall - furnace pipe #1 -> ... -> Left wall - furnace pipe #145 -> Left wall - flat corner #1 -> ... -> Left wall - furnace pipe #17.

[0131] The front / right walls are numbered counterclockwise, for example, from right to left:

[0132] Front wall - corner flat #1 -> ... -> Front wall - corner flat #17 -> Front wall - furnace pipe #1 -> ... -> Front wall - furnace pipe #145.

[0133] This method divides the virtual grid according to the shape, size and layout of the boiler water-cooled fireplace tubes. At the same time, each divided grid is numbered. The numbering rule should be simple, clear and unique to facilitate subsequent recording and query.

[0134] The following describes the process of repairing data recording through a specific embodiment, which specifically includes:

[0135] First, the on-site inspection wall thickness data entry operation requirements.

[0136] First select the water-cooled wall surface (front, back, left, right), then lock the high position of the ruler (raise and lower in units of 0.6m), and select the furnace tube / angle flat number in turn at the high position of the ruler to enter the wall thickness data.

[0137] Then, the height marking requirement of the wall thickness data is detected.

[0138] Currently, paper-based inspection data entry can only be tracked to a scale height of 0.3m (e.g., 0.9m, 1.2m, 1.5m, etc.), without a specific test elevation value. This makes it time-consuming for workers to find the test location again when they arrive on site. It would be best if the test data could be marked to a specific elevation value (e.g., 1.13m) when it is out of tolerance, for maximum accuracy.

[0139] Finally, data entry begins. Each test result is linked to the user's account to prevent data falsification. The furnace tube wall thickness data has been entered and can be modified / deleted on mobile devices. Wall thickness data from historical furnace tube inspection records can be viewed. Permissions control which roles or individuals can operate on each page.

[0140] In addition, the efficiency requirements for wall thickness data entry include:

[0141] a) Locate the last updated entry position: When the account re-enters the furnace tube inspection data entry interface, quickly locate the last entry position of the current account.

[0142] b) The first tube to be tested in each row (one scale height) must be manually selected. Normally, after entering data for a tube, the system automatically jumps four spaces (the number of jumps can be set on the page) to the next tube to be tested in the same row. This also supports manual intervention to add additional tubes to be tested or to position the system at any desired tube.

[0143] c) Out-of-tolerance zone reminder: When the furnace tube wall thickness is within the range of 3 grids in the upper, lower, left and right directions below 5.6mm (settable), a reminder of "out-of-tolerance zone" will be issued when entering this area.

[0144] In one embodiment, the maintenance methods in the maintenance data include pipe replacement, cold spraying, hot spraying, temporary measures, and are configurable in the data dictionary.

[0145] In one embodiment, the maintenance data marking method in this embodiment and the maintenance data display method in Example 1 are used interactively to utilize spatial positioning technology and three-dimensional modeling technology to achieve precise positioning and display of maintenance records, so as to realize digital management of the maintenance marking process, facilitate better maintenance, management, and real-time updates, and at the same time support various different client methods to view maintenance records, thereby improving the efficiency of maintenance record queries.

[0146] Please refer to Figure 13, is a schematic structural diagram of a maintenance data marking system in one embodiment. In one embodiment of the present application, a maintenance data marking system is also disclosed, which is used to apply the maintenance data marking method described above. The maintenance data marking system includes a detection point acquisition module 61, a data acquisition module 62, a detection module 63, and a data recording module 64. The detection point acquisition module 61 is used to obtain the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, and each detection position is marked by a detection point. A passive RFID tag is fixedly installed at each detection point, and the passive RFID tag stores historical maintenance data for the detection position corresponding to the detection point. The data acquisition module 62 is used to read the maintenance data stored in the passive RFID tag at the detection point corresponding to the detection position of the furnace tube channel to be repaired, and perform position verification on the detection position of the furnace tube channel to be repaired based on the read maintenance data. The detection module 63 is used to detect the detection position of the furnace tube channel to be repaired to obtain new detection data. The data recording module 64 is used to write new detection data into the passive RFID tag on the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0147] In the present embodiment, a detailed digital model of the boiler's water-cooled fireplace tubes is created using 3D modeling technology, and maintenance markings are performed on the tubes within the 3D digital model. This advantageously provides a high-precision 3D visualized model, with precise positioning and 3D visualization of maintenance markings. However, the initial digital modeling is expensive and requires high operator skill. In the first embodiment of the present application, a detection marker plate and passive RFID tags are used, allowing the maintenance data marking method of the second embodiment to be applied independently without 3D digital modeling.

[0148] In this embodiment, the ID information of boiler water-wall tubes is stored on passive RFID tags, eliminating the need to engrave the ID information onto the tube walls, reducing the possibility of accidental damage from engraving. Furthermore, the ID information is obtained by combining a numbering method based on the pipeline's direction. This, combined with the actual layout of the furnace tubes, allows for a quick search by pipeline direction, allowing for precise tube location based on the number. This method is more logical and guiding than simply numbering.

[0149] The maintenance data marking method disclosed in the embodiments of the present application first obtains the inspection position of each furnace tube channel of the boiler water-cooled wall tube to be inspected, and the historical maintenance data of each inspection position is stored in a passive RFID tag; then, the maintenance data stored in the passive RFID tag corresponding to the inspection position is read, and the position of the inspection position is verified based on the read maintenance data; the furnace tube inspection is then performed to obtain new inspection data; and finally, the newly obtained inspection data is written to the passive RFID tag corresponding to the inspection position. Since the maintenance data is marked and stored by the passive RFID tag, and the passive RFID tag corresponds one-to-one with the maintenance position, the positioning accuracy of the maintenance furnace tube of the boiler water-cooled wall tube is improved, and the storage process of the maintenance data is simplified, which greatly improves the maintenance efficiency and quality of the boiler furnace tube.

[0150] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments can be implemented by hardware or by computer program. When all or part of the functions in the above embodiments are implemented by computer program, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above functions can be implemented. In addition, when all or part of the functions in the above embodiments are implemented by computer program, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and saved in the memory of the local device by downloading or copying, or the system of the local device is updated. When the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be implemented.

[0151] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A method for marking maintenance data for boiler water wall tube maintenance, characterized in that: include: Obtaining the inspection position of each furnace tube channel of the boiler water-cooled wall tube to be inspected, each inspection position is marked by an inspection point; wherein a passive RFID tag is fixedly set at each inspection point, and the passive RFID tag stores the historical inspection data of the inspection position corresponding to the inspection point; Reading the maintenance data stored in the passive RFID tag on the detection point corresponding to the maintenance position of the furnace tube channel to be inspected, and performing position verification on the detection position of the furnace tube channel to be inspected based on the read maintenance data; When the position verification is correct, the detection position of the furnace tube channel to be inspected is inspected to obtain new detection data; Writing the new detection data into the passive RFID tag at the detection point corresponding to the detection position to store the maintenance data of the detection position; The obtaining of the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired includes: Generate and graphically display the maintenance data of the boiler water-wall tubes; the graphical display is performed by digitally modeling the boiler water-wall tubes to obtain a digital graphical model of each furnace tube channel of the boiler water-wall tubes; wherein the digital graphical model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain pipeline division units, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit; each pipeline division unit corresponds to a detection point, and each detection point corresponds to a detection position of the furnace tube channel; According to a preset maintenance screening rule, a preset number of the pipeline division units are selected in the digital graphic model based on the historical maintenance data of the boiler water-wall tubes, and used as the inspection positions of the furnace tube channels to be inspected when the boiler water-wall tubes are to be inspected next time; The detection point corresponding to each selected pipeline division unit is used as the detection position of the furnace pipe channel to be detected next time; The maintenance data stored in the passive RFID tag includes ID information, and the ID information is obtained in the following manner: Grid division is performed based on the physical parameters of the furnace tube channel of the boiler water-cooled wall tube, so as to divide each of the detection positions into a grid area, each grid area includes at least one grid cell, and each grid cell includes at least one detection position of the furnace tube channel; wherein each grid area includes a furnace tube component of the furnace tube channel; the furnace tube component includes a straight tube, an angled tube, a connecting tube, and / or a connecting valve; and the physical parameters include the spatial shape, spatial size, and spatial position of the furnace tube channel; Uniquely numbering each of the grid areas and the grid units according to a preset numbering rule; The label of the grid unit is used as the ID information of the detection position corresponding to the grid unit.

2. The maintenance data marking method according to claim 1, wherein: Also includes: The passive RFID tag compares the new detection data with the historical detection data, and when the comparison result is not greater than a preset comparison threshold, saves the new detection data or replaces the historical detection data; When the comparison result is greater than the preset comparison threshold, the detection position of the furnace tube channel is reminded to be re-detected or the data abnormality is notified by feeding back data abnormal prompt information to reconfirm the correctness of the new detection data.

3. The maintenance data marking method according to claim 1, wherein: Each detection point is set at the detection position of the corresponding furnace tube channel, and the passive RFID tag is set at the detection point; Alternatively, each detection point is provided on a detection marking plate, and the passive RFID tag is provided on the detection point; wherein a planar schematic diagram of the furnace tube channel is drawn on the detection marking plate, and each detection position marked on the planar schematic diagram corresponds to a detection point.

4. The maintenance data marking method according to claim 1, wherein: The passive RFID tag includes an antenna, a power acquisition circuit, a communication circuit and a storage control circuit; The antenna is used to receive the radio frequency signal transmitted by the radio frequency reader; The power acquisition circuit is used to convert the radio frequency signal into direct current to provide working power for the passive RFID tag; The storage control circuit is used to perform data communication with the radio frequency reader through a communication circuit to obtain detection data.

5. The maintenance data marking method according to claim 4, characterized in that: The passive RFID tag further includes an indication circuit for identifying or indicating whether the storage of the detection data is abnormal; wherein the indication method of the indication circuit includes sound indication or light indication.

6. A computer-readable storage medium, characterized in that The medium stores a computer program, which can be executed by a processor to implement the maintenance data marking method according to any one of claims 1 to 5.

7. A computer program product comprising a computer program and / or instructions, characterized in that When the computer program and / or instructions are executed by a processor, the maintenance data marking method according to any one of claims 1 to 5 is implemented.

8. A maintenance data marking system for boiler water wall tube maintenance, characterized in that: For applying the maintenance data marking method according to any one of claims 1 to 5, the maintenance data marking system comprises: A detection point acquisition module is used to obtain the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, and each detection position is marked by a detection point; wherein a passive RFID tag is fixedly set at each detection point, and the passive RFID tag stores the historical maintenance data of the detection position corresponding to the detection point; a data acquisition module, configured to read the maintenance data stored in the passive RFID tag at the detection point corresponding to the detection position of the furnace tube channel to be inspected, and perform position verification on the detection position of the furnace tube channel to be inspected based on the read maintenance data; A detection module, used for detecting the detection position of the furnace tube channel to be repaired to obtain new detection data; The data recording module is used to write the new detection data into the passive RFID tag on the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

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