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

Abstract

The invention discloses a maintenance data marking method and system for boiler water wall tube maintenance, and the method comprises the steps: firstly obtaining a detection position of each furnace tube channel of a to-be-maintained boiler water wall tube, and storing the historical maintenance data of each detection position in a passive RFID tag; reading the maintenance data stored in the passive RFID tag corresponding to the detection position, and performing position verification on the detection position according to the read maintenance data; detecting the furnace tube to obtain new detection data; and finally, newly acquired detection data is written into the passive RFID tag at the corresponding maintenance position. The maintenance data is marked and stored through the passive RFID tags, and the passive RFID tags are in one-to-one correspondence with the maintenance positions, so that the positioning precision of the maintenance furnace tube of the boiler water wall tube is improved, the storage process of the maintenance data is simplified, and the maintenance efficiency and quality of the boiler 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 equipments of a power station are boilers, steam turbines and generators. The boilers include water-cooled walls. Based on the rigid requirements of safe production, the boiler water-cooled wall tubes need to be regularly inspected or monitored in real time (monitoring data types include deformation, wall thickness, temperature, flow rate and / or hydraulic pressure, etc.). With the development of digital technology, the maintenance data obtained from the maintenance of boiler water-cooled wall tubes must also be managed digitally. For example, the digital twin system is used to replicate the boiler water-cooled wall tubes in real time in digital form. This replica uses digital graphic models (digital modeling), sensor data, operation history and historical maintenance data to simulate the state, behavior and performance of the entity. When the digital twin system performs digital modeling, the digital graphic model is designed in the way that individual components are modeled separately (based on the need to distinguish each individual component and the relative spatial or logical dependency relationship between each individual component for easy display).

[0003] Please refer to Figure 1 , is a schematic diagram of the pipeline setting of the boiler water wall tube. The boiler water wall tubes are mostly distributed in a zigzag manner. In the digital twin system, the furnace tube channel of the entire boiler water wall tube is predefined as a single element and integrated into the model. However, when inspecting the boiler water wall tube, instead of performing an overall full-pipe inspection, a random or preset time sequence sampling inspection is performed, that is, in the furnace tube channel (especially Figure 1 In the case of a tortuous pipeline as shown in the figure, several sections to be inspected are selected for inspection to obtain inspection data at multiple different positions. When the inspection information of the acquired inspection data is annotated with the digital pipeline corresponding to the digital modeling, 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 prone to confusion. 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 position of the boiler water-cooled wall tube.

[0005] According to the first aspect, an embodiment provides a maintenance data marking method for boiler water wall tube maintenance, comprising: Obtaining the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, 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 maintenance position corresponding to the detection point; Reading the maintenance data stored in the passive RFID tag at 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; The new detection data is written into the passive RFID tag at the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0006] In one embodiment, the maintenance data marking method further 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 abnormality prompt information to reconfirm the correctness of the new detection data.

[0007] In one embodiment, the step of obtaining 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-cooled wall tube; the graphical display is to digitally model the boiler water-cooled wall tube to obtain a digital graphic model of each furnace tube channel of the boiler water-cooled wall tube; wherein the digital graphic model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain a pipeline division unit, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit; each of the pipeline division units corresponds to a detection point, and each of the detection points 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 according to the historical maintenance data of the boiler water-cooled wall tubes, which are used as the detection positions of the furnace tube channels to be detected when the boiler water-cooled wall tubes are inspected next time; The detection point corresponding to each selected pipeline dividing unit is used as the detection position of the furnace pipe channel to be detected next time.

[0008] 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; Or, each of the detection points is set on a detection mark plate, and the passive RFID tag is set on the detection point; wherein a plan schematic diagram of the furnace tube channel is drawn on the detection mark plate, and each of the detection positions marked by the plan schematic diagram corresponds to a detection point.

[0009] In one embodiment, 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.

[0010] 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.

[0011] 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; The methods for obtaining ID information include: Grid division is performed according to the physical parameters of the furnace tube channel of the water-cooled fireplace tube of the boiler, so as to divide each of the detection positions into a grid area, each of the grid areas includes at least one grid unit, and each of the grid units includes at least one detection position of the furnace tube channel; wherein each of the grid areas includes a furnace tube component of the furnace tube channel; the furnace tube component includes a straight tube, an angle 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; Using the number of the grid unit as the ID information corresponding to the detection position in the grid unit; The numbering rules include: The number of the grid unit has an inheritance relationship with the number of the grid area where it is located; The numbers of the grid areas have a unique corresponding relationship with the names of the furnace tube components contained therein.

[0012] According to the second aspect, an embodiment provides a computer-readable storage medium, on which a computer program is stored, and the computer program can be executed by a processor to implement the maintenance data marking method as described in the first aspect.

[0013] According to the third aspect, an embodiment provides a computer program product, including a computer program and / or instructions, which, when executed by a processor, implements the maintenance data marking method as described in the first aspect.

[0014] According to a fourth aspect, an embodiment provides a maintenance data marking system for boiler water wall tube maintenance, which is used to apply the maintenance data marking method as described in the first aspect, and the maintenance data marking system includes: 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 on 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, used for reading 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 performing position verification on the detection position of the furnace tube channel to be inspected according to the read maintenance data; A detection module, used for detecting the detection position of the furnace tube channel to be inspected to obtain new detection data; The data recording module is used to write the new detection data into the passive RFID tag at the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0015] 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

[0016] Figure 1 This is a schematic diagram of the piping arrangement of the boiler water wall tubes; Figure 2 A schematic diagram of a furnace tube channel inspection and maintenance marking table; Figure 3 A schematic diagram of a flow chart of a maintenance data display method in an embodiment; Figure 4 A schematic diagram of the division of a digital graphic model of a furnace tube channel in an embodiment; Figure 5 A schematic diagram of a geometric display mode of a pipeline division unit in an embodiment; Figure 6 is a schematic diagram of merging multiple pipeline division units in a first merging manner in an embodiment; Figure 7 is a schematic diagram of merging multiple pipeline division units in a second merging manner in an embodiment; Figure 8 A structural block diagram of a maintenance data display system in one embodiment; Fig. 9 A schematic diagram of the working principle of a passive RFID tag; Fig.10 A schematic diagram of a flow chart of a maintenance data marking method in an embodiment; Fig.11 A schematic plan view of a detection board in an embodiment; Fig.12 A method for acquiring ID information of a passive RFID tag in an embodiment; Fig.13 It is a structural schematic diagram of a maintenance data marking system in an embodiment. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, 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 part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0018] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0020] Please refer to Figure 2 , which is a schematic diagram of a detection and maintenance marking table for a furnace tube channel. The existing tube detection and maintenance methods for boiler furnace tube channels are all based on the on-site furnace tube body object for detection, and are summarized into a data table according to the furnace 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, the three-dimensional digital modeling of the boiler furnace tube channel will also make it difficult to accurately display the detection position due to the large number of boiler furnace tubes (there may be more than 160 furnace tubes on a single tube wall) and the large span of the height range of a single tube. In the actual inspection process, however, the 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 requires not only 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. The objects cannot be submitted to the GPU for rendering together through object or material instance batching, resulting in additional rendering and storage overhead.

[0021] The marking and recording of boiler water wall tube maintenance data involves two aspects, one is the marking of maintenance data of digital pipelines involved in digital modeling, and the other is the marking of each actual maintenance position of the furnace tube channel. In addition to requiring the corresponding relationship to be clearly marked, the maintenance history time of each maintenance position must also be clearly marked. Because, even if it is a random inspection, each time the furnace tube channel is inspected, the selection of the inspection position needs to meet a certain inspection cycle restriction mechanism. That is, to ensure that the interval between the two inspection times of each inspected section of the furnace tube channel cannot be greater than the preset time, that is, within a preset inspection cycle (the inspection cycle is set to the preset time), each section of the furnace tube channel needs to be inspected at least once. For example, the preset inspection cycle is one year, at least one random inspection is carried out per month, and at least 12 inspection points are inspected each time. The time between two inspections of each inspection point (the last inspection and the current inspection) cannot exceed one year, and each section of the furnace tube channel must be inspected at least once within this year. For inspection data abnormal points (value increase or decrease) or inspection positions with maintenance records, at least one inspection number needs to be increased.

[0022] Based on the above requirements, when actually inspecting the boiler tube channel of the boiler water-cooled wall tube, the spot check inspection points need to be set in advance. In addition, during a spot check, whether the inspection of each inspection point is completed needs to be marked in real time to determine the inspection order and inspection status (inspected or not inspected) of each inspection position. However, in the actual inspection process, the working environment is not very ideal. In most cases, the inspection process cannot be completed according to the preset inspection order, especially when comparing historical data (the inspection data must be compared with the historical data, and if the difference is greater than the preset value, it needs to be re-inspected and confirmed). When a certain inspection point needs to be re-inspected, it is very difficult and cumbersome to determine the location of the inspection point and check the historical data (including this inspection data). Experienced staff members all label the inspection points, but manual labeling will result in errors (it is okay when completed by one person, but the error rate is extremely high when multiple people collaborate).

[0023] Embodiment 1: In this embodiment, the marking and display of the maintenance data of the digital pipeline involved in digital modeling are carried out under the premise of not segmenting the digital model of the digitally modeled pipeline model. Specifically, the area is divided according to the preset pipeline maintenance division rules to obtain the pipeline division unit corresponding to the maintenance position. That is, the spatial range of each pipe wall is generally calibrated to determine the overall length, width and height of the pipe wall marking area, and then the marked area (pipeline division unit) is subdivided by creating a specified polygon array according to the data range (data list rows and columns) contained in the marked area. Further, the array generates a virtual mark, and each pipeline division unit can be defined as a polygon object of any shape and a marking material is applied. The wall thickness detection information of the entire area is visualized through different colors and maps of the material. In addition, if a large number of pipe walls and segmentation information are to be dealt with, a mechanism for merging and displaying statistical information can be additionally designed (multiple pipeline division units are merged into a unified division area). According to the set merging parameters, the user can view the statistical information (displayed in the form of divided areas) through the merged grid at a certain distance.

[0024] Please refer to Figure 3 , is a flow chart of a maintenance data display method in an embodiment, and the maintenance data display method for boiler water-cooled wall tube maintenance specifically includes: Step 101, opening a graphical display interface.

[0025] Generate and graphically display the maintenance data of the boiler water-cooled wall tube, and the graphical display is to digitally model the boiler water-cooled wall tube to obtain a digital graphic model of each furnace tube channel of the boiler water-cooled wall tube. The digital graphic model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain a pipeline division unit, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit.

[0026] In one embodiment, the pipeline division unit division method includes: First, a three-dimensional identification area is created according to the size, spatial range and spatial position of the furnace tube channel; Then, the preset three-dimensional annotation object is segmented into a three-dimensional array in the three-dimensional identification area, wherein the three-dimensional array includes a row array, a column array and a layer array.

[0027] Next, creating a pipeline division unit in the three-dimensional array within the three-dimensional identification area to mark the corresponding furnace pipe channel detection position; Finally, the detection data of each detection position of the furnace tube channel is updated to the corresponding pipeline division unit.

[0028] 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 state 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 by preset different colors.

[0029] Please refer to Figure 5 , is a schematic diagram of a geometric display mode of a pipeline division unit in an embodiment. In one embodiment, each pipeline division unit is individually displayed graphically in a preset geometric figure, wherein the geometric figure includes a cuboid, a cube, a sphere, a cylinder, a cone and / or a falling bead. Figure 5 In the figure, the geometric figures 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 distinction. The maintenance data includes ID information, detection data, maintenance time, maintenance type, maintenance method, maintenance personnel information and / or other remarks information. In one embodiment, the maintenance data information of pipeline division units with the same historical maintenance data is set to be identified in the same way.

[0030] Please refer to Figure 6 and Figure 7 , is a schematic diagram of merging multiple pipeline division units in a first merging mode and a second merging mode in an embodiment. In one embodiment, in order to facilitate the viewing of maintenance data (when the number of pipeline division units is too large or too dense), an additional set of merging parameters will be set to merge or subdivide the display according to the horizontal and vertical array objects according to the user's viewing distance. The merging also considers the remainder of the odd array, and the remainder rows and columns are additionally merged into a smaller merged area unit for display. Among them, Figure 6 The pipeline division unit is divided into 20x10 subdivided cells, and the 4x4 merge setting is in the state. After two vertical merges, the remaining two rows are merged into one additional row of merged cells. Figure 7 The pipeline division unit is divided into 20x10 subdivided cells, and the state after 6x6 merging is set. After three subdivisions in the horizontal direction, two columns remain, and after one merger in the vertical direction, four rows remain, and additional mergers are made into smaller row and column merged cells. In an implementation, when the merged area unit obtained after the merger is visualized, the visualization object also supports statistics and display of problem content according to the subdivided content state before the merger.

[0031] Step 102: Select a preset number of pipeline division units.

[0032] According to the preset inspection and screening rules, a preset number of pipeline division units are selected in the digital graphic model based on the historical inspection and maintenance data of the boiler water-cooled wall tubes, which are used as the inspection positions of the furnace tube channels to be inspected or maintained when the boiler water-cooled wall tubes are inspected or maintained next time. The pipeline inspection and division rules include: each pipeline division unit corresponds to a detection point of at least one furnace tube channel, and the detection point is used to identify the inspection position of the furnace tube channel to be inspected or maintained when the furnace tube channel is inspected or maintained once.

[0033] 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.

[0034] Step 103, perform detection.

[0035] The detection position of the furnace tube channel corresponding to the selected pipeline division unit is detected.

[0036] Step 104, updating the detection data.

[0037] The detection data acquired 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, each pipeline division unit is graphically displayed in the manner of step 101.

[0038] In one embodiment, the maintenance data display method further includes: Step 105: Data abnormality prompt.

[0039] The updated detection data of the pipeline division unit is compared with the historical detection data of the pipeline division unit, and 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 re-test or notify the data abnormality by feedback of data abnormality prompt information, so as to reconfirm the updated detection data of the pipeline division unit.

[0040] Please refer to Figure 8, is a structural block diagram of a maintenance data display system in an embodiment. In an embodiment of the present application, a maintenance data display system is also disclosed, which is used to apply the maintenance data display method as 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 the maintenance data of the boiler water-cooled wall tube. The graphical display is to digitally model the boiler water-cooled wall tube to obtain a digital graphic model of each furnace tube channel of the boiler water-cooled wall tube. Among them, the digital graphic model corresponding to the furnace tube channel is divided into regions according to the preset pipeline maintenance division rules 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. The detection point selection device 12 is used to select a preset number of pipeline division units in the digital graphic model according to the preset maintenance screening rules and the historical maintenance data of the boiler water-cooled wall tube as the detection position of the furnace tube channel to be detected or maintained when the boiler water-cooled wall tube is repaired next time. The maintenance device 13 is used to detect the detection position of the furnace tube channel corresponding to the selected pipeline division unit. The data updating device 14 is used to update the detection data acquired by the detection to the corresponding pipeline division unit, and re-graphically display the maintenance data of the boiler water wall tube through the display device. In one embodiment, the data updating device 14 is a smart mobile terminal.

[0041] In one embodiment of the present application, the subdivision and merging of the pipeline division units are based on the created three-dimensional identification area, which can be set to any size, position and rotation direction, so it is additionally suitable for objects with relatively regular styles and relatively neat object arrangement such as furnace pipe walls. In this display mode, the user can set the position of the identification area by himself to complete the three-dimensional visual marking of the four furnace pipe walls in front, behind, left and right.

[0042] 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 tube, so as to divide the digital graphic model of the furnace tube channel into regions according to the preset pipeline maintenance division rules, and mark the historical maintenance data of the corresponding furnace tube channel maintenance on the pipeline division unit obtained by the regional division; then select a preset number of pipeline division units based on the historical maintenance data, and use the detection position of the furnace tube channel corresponding to the selected pipeline division unit as the maintenance point for the next inspection or maintenance; finally, update the detection data obtained by the maintenance point to the corresponding pipeline division unit. Since the maintenance position of the furnace tube channel for each maintenance is selected based on the historical maintenance data, the selection of the position of the furnace tube channel to be maintained meets the detection cycle limitation mechanism for ensuring the safe operation of the boiler water-cooled wall tube, so as to ensure the safe operation of the boiler system.

[0043] Embodiment 2: In this embodiment, the marking of each actual maintenance position of the furnace tube channel is involved. There are a large number of water-cooled furnace tubes of the boiler and the structure is complex. These furnace tubes are crisscrossed and arranged closely, and it is very difficult to accurately identify and locate each furnace tube during maintenance. The traditional marking method is difficult to meet the needs of quickly and accurately finding a specific furnace tube, so a more systematic and accurate marking device and method are needed to improve the efficiency and accuracy of maintenance. In addition, the requirements for the safety and reliability of boiler operation are constantly increasing. The boiler is an important equipment for industrial production and energy supply, and the safety and reliability of its operation are crucial. 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 timely inspect and maintain the problematic furnace tubes to ensure the safe operation of the boiler.

[0044] Traditional furnace tube inspection and marking methods include traditional handwritten marking method, hanging marking method, spray marking method and partition number marking scheme. Among them, the partition number marking scheme is to divide the area where the furnace tube is located into different areas according to certain rules (such as by row, by functional area, etc.), and then number the furnace tubes in each area one by one, but it has three obvious disadvantages: 1) The boundaries of the partitions may be blurred. The boundaries are not clear and intuitive enough, which may lead to unclear identification of the ownership of the furnace tubes at the junction of the partitions, resulting in confusion during maintenance positioning.

[0045] 2) The numbering is easy to be confused. When there are many partitions and a large number of furnace tubes, the numbering is very complicated, and it is easy to have repeated numbers, omissions or wrong numbers, which affects the accurate finding of the target furnace tube during maintenance.

[0046] 3) Lack of spatial positioning accuracy. The partition number is more of a simple reference to the area and individual, which is not suitable for some maintenance scenarios that require accurate understanding of the specific spatial location of the furnace tube in the furnace.

[0047] Based on the above shortcomings, the technical problems of maintenance positioning accuracy and maintenance record and traceability difficulties need to be solved in this embodiment.

[0048] 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. They 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 it can support higher-power storage control circuits.

[0049] Please refer to Fig. 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, and the maximum voltage may be 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 energy of the voltage limiting circuit 22 is not working, and the RF signal V RF When 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 a voltage limiting electrical 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, and is used for data exchange with the reader.

[0050] Based on the passive RFID tag technology, an inspection data marking method is disclosed in one embodiment of the present application, which is used for inspection data marking of boiler water wall tube inspection. Please refer to Fig.10 , is a flow chart of a maintenance data marking method in an embodiment, and the maintenance data marking method specifically includes: Step 201, obtaining a detection position.

[0051] The detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired is obtained, and each detection position is marked by a detection point. Among them, a passive RFID tag is fixedly set at each detection point, and the passive RFID tag stores the historical maintenance data of the maintenance position corresponding to the detection point.

[0052] In one embodiment, the method in the first embodiment is applied to obtain the detection position of the furnace tube channel to be repaired, specifically including: First, the maintenance data of the boiler water-cooled wall tubes is generated and graphically displayed. The graphical display is to digitally model the boiler water-cooled wall tubes to obtain the digital graphic model of each furnace tube channel of the boiler water-cooled wall tubes. The digital graphic model corresponding to the furnace tube channel is divided into regions according to the preset pipeline maintenance division rules 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 a furnace tube channel.

[0053] 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 pipeline 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.

[0054] 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.

[0055] Step 202, verify the detection position.

[0056] The maintenance data stored in the passive RFID tag at the detection point corresponding to the maintenance position of the furnace tube channel to be inspected is read, and the detection position of the furnace tube channel to be inspected is positionally verified based on the read maintenance data.

[0057] Step 203, perform detection.

[0058] When the position verification is correct, the detection position of the furnace tube channel to be inspected is inspected to obtain new detection data.

[0059] Step 204: store the detection data.

[0060] The new detection data is written into the passive RFID tag at the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

[0061] Step 205, verifying the detection data.

[0062] The passive RFID tag compares the new detection data with the historical detection data. When the comparison result is not greater than a preset comparison threshold, the new detection data is saved or the historical detection data is replaced. 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 feedback of data abnormality prompt information to reconfirm the correctness of the new detection data.

[0063] like Fig. 9 As shown, in one embodiment, the passive RFID tag further includes an indication circuit, and the indication circuit is used to identify or indicate whether the storage of the detection data is abnormal. Among them, the indication method of the indication circuit includes sound indication or light indication. In one embodiment, the indication circuit includes an indicator light, and the flashing change of the indicator light is used as feedback of abnormal prompt information. In one embodiment, the indication circuit includes an audio circuit, which is used to provide feedback of abnormal prompt information by sound prompt.

[0064] In one embodiment, 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. In one embodiment, the passive RFID tag can be set at the detection point of the furnace tube channel by non-invasive pasting.

[0065] Please refer to Fig.11 , is a plan view of a detection board in an embodiment. In one embodiment, each detection point is set on a detection mark plate, and a passive RFID tag is set on the detection point. A plan view of the furnace tube channel is drawn on the detection mark plate, and each detection position marked in the plan view corresponds to a detection point. The marking point is set on the marking plate, and there is no need to mark the boiler water-cooled wall tube to prevent marking damage to the boiler water-cooled wall tube.

[0066] 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.

[0067] Please refer to Fig.12 , is a method for obtaining ID information of a passive RFID tag in an embodiment. In an embodiment of the present application, a method for obtaining ID information is also disclosed, which specifically includes: Step 301, grid division.

[0068] Grid division is performed according to the physical parameters of the furnace tube channel of the water-cooled furnace tube of the boiler, so that each detection position is divided into a grid area, each grid area includes at least one grid unit, and each grid unit includes at least one detection position of the furnace tube channel. Each grid area includes a furnace tube component of the furnace tube channel, and the furnace tube component includes a straight tube, an angle 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.

[0069] Step 302, numbering.

[0070] Each grid area and grid unit is uniquely numbered according to a preset numbering rule.

[0071] Step 303, obtaining ID information.

[0072] The number of the grid unit is used as the ID information of the detection position in the corresponding grid unit.

[0073] In one embodiment, the numbering rule includes: the numbering of the grid unit has an inheritance relationship with the numbering of the grid area where it is located, and the numbering of the grid area has a unique corresponding relationship with the name of the furnace tube component contained therein.

[0074] In this embodiment, a method for obtaining ID information of boiler water-cooled fireplace tubes based on grid division is provided, which aims to improve the efficiency and accuracy of boiler water-cooled fireplace tube maintenance. By dividing the internal space of the boiler into grids, each section of the furnace tube has a unique coordinate and identification, which facilitates maintenance personnel to quickly locate and record the status of the furnace tube. The following describes the method for obtaining ID information through a specific embodiment, which specifically includes: First, define the ruler grid.

[0075] It can be understood as multiple virtual grids of the same area drawn on the front, back, 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.

[0076] Then, define the width and height.

[0077] 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 0 meters above sea level, and the height of the bottom sootblower opening is defined as N meters above sea level. The actual height is 30+ meters, and the length measurement unit can be set to 10 cm).

[0078] Next, define the cells.

[0079] Each cell is regarded as a point for furnace tube inspection (in actual inspection, the inspection points are selected according to the rules, 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 (when inspecting the furnace tube, the lifting platform drops 0.6 meters at a time. The height can be measured on both sides of the scale, so each cell height is 0.3 meters).

[0080] Finally, define the cell order.

[0081] The left / back walls are numbered clockwise, for example, from left to right: Left wall - furnace pipe #1->...->Left wall - furnace pipe #145->Left wall - corner flat #1->...->Left wall - furnace pipe #17.

[0082] The front / right walls are numbered counterclockwise, for example, from right to left: Front wall - corner flat #1->...->Front wall - corner flat #17->Front wall - furnace pipe #1->...->Front wall - furnace pipe #145.

[0083] This method divides the virtual grid according to the shape, size and layout of the boiler water-cooled fireplace tube. At the same time, each divided grid is numbered. The numbering rule should be simple, clear and unique to facilitate subsequent recording and query.

[0084] The following describes the process of maintenance data recording through a specific embodiment, which specifically includes: First, the on-site inspection of wall thickness data entry operation requirements.

[0085] 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 / corner level number in turn at the high position of the ruler to enter the wall thickness data for detection.

[0086] Then, the height marking requirement of the wall thickness data is detected.

[0087] At present, paper inspection data entry can only locate the scale height in units of 0.3m (such as 0.9m, 1.2m, 1.5m, etc.), and there is no specific inspection elevation value. It is time-consuming for workers to find the inspection position again when they arrive at the site. It is hoped that when the inspection data is out of tolerance, it can be marked to any specific elevation value (such as 1.13m), which is the most accurate.

[0088] Finally, start entering data. Each test data is bound to the account of the person entering the data to prevent the test data from being falsified. The wall thickness data of the furnace tube test has been entered, and it supports modification / deletion on the mobile terminal. The wall thickness data of the historical furnace tube test record sheet can be viewed. The permissions control the operable roles or personnel on each page.

[0089] In addition, the requirements for improving the efficiency of wall thickness data entry include: 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.

[0090] b) The first test tube in each row (one ruler height) needs to be manually selected. Under normal circumstances, after the data of a tube is entered, it will automatically jump 4 spaces (the number of jumps can be set on the page) to locate the next tube to be tested in the same row. At the same time, it supports manual intervention to add a test tube in the middle or locate to any other desired test tube.

[0091] c) Out-of-tolerance zone reminder: When the furnace tube wall thickness is within the range of 3 grids in the up, down, left and right directions below 5.6mm (settable), a reminder of "out-of-tolerance zone" will be displayed when entering this area.

[0092] 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.

[0093] In one embodiment, the maintenance data marking method in this embodiment and the maintenance data display method in embodiment one 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 updating, and at the same time support various client methods to view maintenance records, thereby improving the efficiency of maintenance record query.

[0094] Please refer to Fig.13 , is a structural diagram of a maintenance data marking system in an 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 as 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. Among them, a passive RFID tag is fixedly set at each detection point, and the passive RFID tag saves the historical maintenance data of 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 on the detection point corresponding to the detection position to be repaired of the furnace tube channel, 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 at the detection point corresponding to the detection position, so as to store the maintenance data of the detection position.

[0095] In the embodiment of the present application, a detailed digital model of the boiler water-cooled fireplace tube is created by three-dimensional modeling technology, and the furnace tube inspection mark is performed in the three-dimensional digital model, which has the advantage of providing a three-dimensional visualized high-precision model, accurate positioning of the inspection mark and three-dimensional visualization display. However, the initial digital modeling cost is high and the technical requirements for the operator are high. In the first embodiment of the present application, a detection mark plate and a passive RFID tag are used, and the inspection data marking method in the second embodiment can be applied alone without three-dimensional digital modeling.

[0096] In the embodiment of the present application, the ID information of the boiler water-cooled wall tube is stored in a passive RFID tag, and there is no need to burn the ID information on the tube wall, which reduces the possibility of accidental damage to the tube wall due to carving. In addition, the ID information is obtained based on the pipeline direction combined with the number marking method, combined with the actual layout characteristics of the furnace tube, the search range can be quickly narrowed by the pipeline direction, and the furnace tube can be accurately located based on the number. It is more logical and guiding than simple numbering.

[0097] The maintenance data marking method disclosed in the embodiment of the present application first obtains the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, and the historical maintenance data of each detection position is stored in the passive RFID tag; then reads the maintenance data stored in the passive RFID tag corresponding to the detection position, and performs position verification on the detection position based on the read maintenance data; then performs furnace tube inspection to obtain new detection data; finally, writes the newly obtained detection data into the passive RFID tag corresponding to the maintenance position. Since the maintenance data is marked and stored by the passive RFID tag, and the passive RFID tag corresponds to the maintenance position one by one, 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.

[0098] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, 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-mentioned 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-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, 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 can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0099] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A maintenance data marking method for boiler water wall tube maintenance, characterized in that: include: Obtaining the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired, 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 maintenance position corresponding to the detection point; Reading the maintenance data stored in the passive RFID tag at 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; The new detection data is written into the passive RFID tag at the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

2. The maintenance data marking method according to claim 1, characterized in that: 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 abnormality prompt information to reconfirm the correctness of the new detection data.

3. The maintenance data marking method according to claim 1, characterized in that: The step of obtaining the detection position of each furnace tube channel of the boiler water-cooled wall tube to be repaired comprises: Generate and graphically display the maintenance data of the boiler water-cooled wall tube; the graphical display is to digitally model the boiler water-cooled wall tube to obtain a digital graphic model of each furnace tube channel of the boiler water-cooled wall tube; wherein the digital graphic model corresponding to the furnace tube channel is divided into regions according to a preset pipeline maintenance division rule to obtain a pipeline division unit, and the historical maintenance data of the furnace tube channel corresponding to the pipeline division unit is marked on the pipeline division unit; each of the pipeline division units corresponds to a detection point, and each of the detection points 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 according to the historical maintenance data of the boiler water-cooled wall tubes, which are used as the detection positions of the furnace tube channels to be detected when the boiler water-cooled wall tubes are inspected next time; The detection point corresponding to each selected pipeline dividing unit is used as the detection position of the furnace pipe channel to be detected next time.

4. The maintenance data marking method according to claim 1, characterized in that: Each of the detection points is arranged at the detection position of the corresponding furnace tube channel, and the passive RFID tag is arranged at the detection point; Or, each of the detection points is set on a detection mark plate, and the passive RFID tag is set on the detection point; wherein a plan schematic diagram of the furnace tube channel is drawn on the detection mark plate, and each of the detection positions marked by the plan schematic diagram corresponds to a detection point.

5. The maintenance data marking method according to claim 1, characterized in that: 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.

6. The maintenance data marking method according to claim 5, characterized in that: The passive RFID tag also 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.

7. The maintenance data marking method according to claim 1, characterized in that: 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; The methods for obtaining ID information include: Grid division is performed according to the physical parameters of the furnace tube channel of the water-cooled fireplace tube of the boiler, so as to divide each of the detection positions into a grid area, each of the grid areas includes at least one grid unit, and each of the grid units includes at least one detection position of the furnace tube channel; wherein each of the grid areas includes a furnace tube component of the furnace tube channel; the furnace tube component includes a straight tube, an angle 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; Using the number of the grid unit as the ID information corresponding to the detection position in the grid unit; The numbering rules include: The number of the grid unit has an inheritance relationship with the number of the grid area where it is located; The numbers of the grid areas have a unique corresponding relationship with the names of the furnace tube components contained therein.

8. A computer-readable storage medium, characterized in that: A computer program is stored on the medium, and the computer program can be executed by a processor to implement the maintenance data marking method according to any one of claims 1 to 7.

9. 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 7 is implemented.

10. A maintenance data marking system for boiler water wall tube maintenance, characterized in that: The maintenance data marking method according to any one of claims 1 to 7 is used, wherein 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 on 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, used for reading 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 performing position verification on the detection position of the furnace tube channel to be inspected according to the read maintenance data; A detection module, used for detecting the detection position of the furnace tube channel to be inspected to obtain new detection data; The data recording module is used to write the new detection data into the passive RFID tag at the detection point corresponding to the detection position to serve as the maintenance data storage of the detection position.

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