Abrasion-proof and explosion-proof inspection method and system for water wall tube of boiler

Abstract

The invention relates to the technical field of boiler maintenance, and particularly provides a boiler water wall tube anti-abrasion and anti-explosion inspection method and system, and the inspection method comprises the steps: determining vertical longitudinal lines corresponding to a plurality of water wall tubes on each water wall based on a zero reference; for each water-cooled wall, determining a plurality of cross points for collecting target data based on horizontal infrared rays and each vertical longitudinal line, and recording the position of each cross point and the target data corresponding to the cross point; wherein the horizontal infrared rays can move, and the target data comprises thickness measurement data, spraying marks, pipe replacement marks and surface corrosion conditions of the water wall pipes corresponding to the cross points. According to the method, the water-cooled wall maintenance work is positioned and quantified, and the current water-cooled wall maintenance work can be quickly estimated based on the positions of the multiple cross points and the target data corresponding to the cross points, so that the maintenance quality and the maintenance efficiency are remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of boiler maintenance, and in particular to a method and system for inspecting boiler water-cooled wall tubes for anti-wear and anti-explosion. Background Art

[0002] During the operation of the boiler in a thermal power plant, high-temperature corrosion occurs in the boiler water-cooled wall, causing the water-cooled wall tube wall to continue to thin. The effective bearing capacity of the water-cooled wall tube wall continues to decrease. In severe cases, it may lead to the explosion of the water-cooled wall tube, causing the unit to shut down, seriously affecting the safe operation of the unit.

[0003] With the rapid changes in the coal market, key indicators such as the quality of coal burned deviate greatly from the unit's designed coal type, with insufficient calorific value and increased ash content, resulting in a sharp increase in coal consumption and serious wear of the boiler water-cooled wall tubes. At the same time, the unit has been operating at high load for a long time and burning economic coal (high-sulfur, low-volatile coal), which has aggravated the reducing atmosphere in the main combustion area of ​​the boiler. The water-cooled wall has high-temperature sulfur corrosion, and the corrosion areas are of different sizes and irregular patterns. In addition, given that the existing power plant water-cooled wall inspections are all roughly located using the burner port as a reference, it is impossible to record data based on documents. This results in the inability to accurately record the existing wear positioning during the inspection process and the comparison of previous inspection and maintenance data, making it impossible to accurately judge the health status of the unit and provide an analytical basis for subsequent maintenance of the water-cooled wall. Summary of the invention

[0004] In response to the above problems, the present application provides a method and system for inspecting boiler water-cooled wall tubes for anti-wear and explosion prevention. By locating and quantifying the water-cooled wall maintenance work, based on the positions of multiple intersections and the target data corresponding to the intersections, it is possible to quickly estimate the water-cooled wall maintenance work at that time, thereby significantly improving the maintenance quality and efficiency.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a method for inspecting boiler water-cooled wall tubes for anti-wear and anti-explosion, comprising:

[0007] Based on the zero point reference, vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes are determined on each water-cooled wall;

[0008] For each of the water-cooled wall walls, multiple intersection points for collecting target data are determined based on horizontal infrared rays and each of the vertical longitudinal lines, and the position of each intersection point and the target data corresponding to the intersection point are recorded; wherein the horizontal infrared rays are movable, and the target data include thickness measurement data, spray marks, tube replacement marks and surface corrosion conditions of the water-cooled wall tubes corresponding to the intersection points.

[0009] In a possible implementation, the method of determining a plurality of vertical longitudinal lines corresponding to the water-cooled wall tubes on each water-cooled wall wall based on a zero-point reference includes: determining a transverse line where a sootblower port of the uppermost layer of each water-cooled wall wall is located as the zero-point reference; wherein the sootblower ports of the uppermost layer of all the water-cooled wall walls are located at the same elevation; hanging a vertical ruler at any one of the sootblower ports to obtain an elevation standard of the vertical longitudinal line, and establishing a plurality of vertical longitudinal lines corresponding to the water-cooled wall tubes based on the elevation standard.

[0010] In a possible implementation, the horizontal infrared ray is movable, including: the horizontal infrared ray is emitted by an infrared level meter, and the infrared level meter is fixedly installed on a lifting platform to realize the top-down / bottom-up movement of the horizontal infrared ray; the multiple intersection points for collecting target data are determined based on the horizontal infrared ray and each of the vertical longitudinal lines, including: when the lifting platform moves from the zero point reference based on a preset interval, a plurality of horizontal transverse infrared rays are formed; the plurality of horizontal transverse infrared rays intersect with the plurality of vertical longitudinal lines to generate a plurality of cross-intersecting intersection points.

[0011] In a possible implementation, the method further includes: after the water-cooled wall tube has run through a preset collection cycle, collecting the target data based on each intersection to obtain comparison target data corresponding to each intersection; determining the wear amount of the water-cooled wall tube corresponding to each intersection based on the comparison target data, the target data, and the preset cycle; and processing the water-cooled wall tube corresponding to the problem intersection when the wear amount of the problem intersection does not meet the preset conditions.

[0012] In a possible implementation, the processing of the water-cooled wall tubes corresponding to the problem intersection includes: when determining the prominent thinning area based on the difference between the comparison target data and the target data, shortening the preset acquisition period of the water-cooled wall wall, so that the acquisition frequency corresponding to the water-cooled wall wall is increased; wherein the prominent thinning area is an area composed of at least two directly adjacent thinning intersections, and the difference between the comparison target data and the target data corresponding to the thinning intersection is less than a preset tube replacement threshold and greater than the average value of the difference of all the intersections.

[0013] In a possible implementation, the processing of the water-cooled wall tubes corresponding to the problematic intersection also includes: when the protruding thinning area is detected, shortening the preset interval of the longitudinal movement of the lifting platform where the protruding thinning area is located, so as to increase the collection density corresponding to the protruding thinning area.

[0014] In a possible implementation, when the amount of wear at the problem intersection does not meet a preset condition, the water-cooled wall tube corresponding to the problem intersection is processed, including: when the amount of wear at the problem intersection reaches a preset tube replacement threshold, the water-cooled wall tube corresponding to the problem intersection is replaced.

[0015] In a possible implementation, the method further includes: after replacing the water-cooled wall tubes corresponding to the problematic intersection, increasing the data acquisition frequency and density of the tube replacement position corresponding to the problematic intersection.

[0016] In a possible implementation, the target data further includes: any one of corrosion rate, temperature and pressure.

[0017] In a second aspect, the present application provides a boiler water-cooled wall tube anti-wear and explosion-proof inspection system, which is used to implement the above-mentioned boiler water-cooled wall tube anti-wear and explosion-proof inspection method, including:

[0018] A determination module, used for determining vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes on each water-cooled wall based on a zero point reference;

[0019] An inspection module is used to determine multiple intersection points for collecting target data for each of the water-cooled wall walls based on horizontal infrared rays and each of the vertical longitudinal lines, and record the position of each intersection point and the target data corresponding to the intersection point; wherein the horizontal infrared rays are movable, and the target data is the thickness measurement data of the water-cooled wall tube corresponding to the intersection point.

[0020] The present application provides a method and system for inspection of boiler water-cooled wall tubes for wear and explosion prevention, which determines a plurality of vertical longitudinal lines corresponding to the water-cooled wall tubes on each water-cooled wall wall based on a zero-point reference, thereby determining a plurality of intersection points for collecting target data through horizontal infrared rays and each of the vertical longitudinal lines, and recording the position of each intersection point and the target data corresponding to the intersection point, thereby realizing rapid quantification of the current inspection work, and at the same time being able to compare the target data of all times based on the position of each intersection point, so as to accurately judge or calculate the health status of the water-cooled wall and the main problems existing therein as well as the corrosion and thinning rate of the water-cooled wall tubes, thereby successfully avoiding or reducing leakage accidents caused by inadequate inspection and analysis of the water-cooled wall tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present application and form a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0022] Figure 1 An optional flow chart of a method for inspecting boiler water wall tubes for wear and explosion prevention provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of a record form provided in an embodiment of the present application;

[0024] Figure 3 An optional flow chart of a method for inspecting boiler water wall tubes for wear and explosion prevention provided in an embodiment of the present application;

[0025] Figure 4 A schematic structural diagram of a boiler water-cooled wall tube anti-wear and explosion-proof inspection system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0028] The water-cooled wall of the boiler of the power plant unit converts water into steam by absorbing heat in the furnace. This process is the key link of heat transfer. When the wall thickness of the water-cooled wall tube is reduced or the surface is scaled due to wear, corrosion and other reasons, the thermal resistance will increase; at the same time, when the water-cooled wall tube is partially blocked or the diameter of the tube is reduced due to corrosion, the flow rate and flow of the steam-water mixture in the tube will change. In the natural circulation boiler, this will affect the natural circulation power of the steam and water and the quality of steam; even, with the continuous wear and corrosion, the strength of the tube wall gradually decreases. When the tube wall cannot withstand the pressure inside the tube, leakage will occur. For example, in some old boilers that have been in operation for many years, the wall thickness of the water-cooled wall tube may be reduced to below the critical value due to long-term scouring and wear. Once a leak occurs, if it is not discovered and handled in time, the high-pressure steam-water mixture in the tube will be ejected in large quantities, causing the furnace pressure to rise instantly, which will then cause a tube burst accident and cause huge economic losses.

[0029] Usually, at the beginning of the unit's operation, the surface of the newly installed water-cooled wall tubes is relatively smooth, and the operating parameters are in the process of debugging and stabilization. At this time, it is mainly some normal mechanical wear and tear and natural aging loss of materials. As the unit's operating time increases, after entering the mid-to-late stable operation stage, the wear condition of the water-cooled wall will gradually increase. On the one hand, the ash particles produced by coal combustion will continuously wash the surface of the water-cooled wall tubes, and long-term accumulation will gradually make the tube wall thinner. On the other hand, since the high-temperature flue gas generated during the combustion process contains sulfur, sulfides and other impurities, these substances will react chemically with the metal of the water-cooled wall tubes under high temperature, causing high-temperature corrosion of the water-cooled wall tubes, and the wear conditions of different parts may also be different, which further leads to a decrease in the strength of the water-cooled wall tubes and increases the risk of leakage or bursting.

[0030] Based on this situation, it is very important to conduct comprehensive monitoring and maintenance of the water-cooled wall tubes. During this period, ultrasonic testing and other technologies can be used to regularly measure the wall thickness of the water-cooled wall tubes to promptly discover areas of thinning wall thickness; for the worn parts found, take corresponding measures according to the degree of wear, such as welding or repairing for minor wear, and replacing for serious wear. However, the existing inspection of the water-cooled wall is roughly located based on the burner port as a reference, and it is impossible to record and track data based on documents. This results in the inability to accurately record the wear location during the inspection process and the comparison of previous inspection and maintenance data, and thus it is impossible to accurately judge the health status of the unit.

[0031] In order to solve the above technical problems, the present invention proposes the following technical solutions and corresponding embodiments.

[0032] Example 1

[0033] Combine the following Figures 1 to 4 The embodiments shown describe the technical solution of the present invention:

[0034] Figure 1 The flowchart of the boiler water wall tube anti-wear and explosion-proof inspection method according to the embodiment of the present application is shown. It should be noted that the boiler water wall tube anti-wear and explosion-proof inspection method according to the embodiment of the present application can be applied to the unit boiler water wall maintenance system, such as Figure 1 As shown, a method for inspecting boiler water-cooled wall tubes for anti-wear and anti-explosion in an embodiment of the present application includes the following steps S101 to S102:

[0035] Step S101, determining vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes on each water-cooled wall based on a zero point reference.

[0036] In the embodiment of the present application, in order to ensure that the positioning scale standard of the vertical longitudinal line is consistent during each inspection, a vertical longitudinal line is determined on each water-cooled wall based on the same zero point reference; wherein the vertical longitudinal line is the same positioning scale standard referenced by each water-cooled wall tube. Here, the vertical longitudinal line can directly read the elevation data.

[0037] As a feasible implementation method, the horizontal line where the sootblower port of the top layer of each water-cooled wall is located is used as the zero point reference, and a temporary vertical ruler is hung at the sootblower port; it should be noted here that the sootblower ports of the top layer of all water-cooled wall walls are located at the same elevation, that is, each maintenance is hung at the same height to ensure that the zero position of the ruler is at the same position each time (i.e., the zero point reference of the embodiment of the present application). A vertical ruler is hung at any sootblower port to obtain the elevation standard of the vertical longitudinal line, and based on the elevation standard, a plurality of vertical longitudinal lines corresponding to the water-cooled wall tubes are established.

[0038] Step S102: for each of the water-cooled wall walls, multiple intersection points for collecting target data are determined based on the horizontal infrared rays and each of the vertical longitudinal lines, and the position of each intersection point and the target data corresponding to the intersection point are recorded; wherein the horizontal infrared rays are movable, and the target data include the thickness measurement data, spray marks, tube replacement marks and surface corrosion conditions of the water-cooled wall tubes corresponding to the intersection points.

[0039] In the embodiment of the present application, the accurate inspection point for each water-cooled wall tube is determined by a plurality of cross points formed on the water-cooled wall wall by a movable horizontal infrared ray and a vertical longitudinal line corresponding to each water-cooled wall tube, wherein the horizontal infrared ray moves from top to bottom / from bottom to top on each water-cooled wall wall; at the same time, a record table corresponding to the scale size (corresponding to the vertical longitudinal line of the embodiment of the present application) is prepared to reflect the actual number of all water-cooled wall tubes, and the reference is made to the table. Figure 2 As shown. After the target data such as the wall thickness of the water-cooled wall tube is detected, the corresponding position is found in the above-mentioned record form, and the thickness measurement data, tube replacement position mark (i.e., tube replacement mark), subsequent spraying position mark (i.e., spraying mark) and surface corrosion conditions are recorded in the corresponding grid form to form accurate water-cooled wall maintenance data and retain and compare the data with the next year to provide data support and reference for later maintenance. Exemplarily, the record form is in the form of a paper form. For each water-cooled wall, several A4 papers can be used to synthesize them. After recording, they are pasted into one sheet for easy analysis and reference, and the paper form obtained by the record is fed back into an electronic version for easy analysis and management.

[0040] In the embodiment of the present application, the target data may also be any one of the corrosion rate, temperature and pressure; wherein the corrosion rate is calculated by the depth method, specifically by measuring the thickness difference of the pipe wall before and after two inspection time periods, and the pipe wall thickness measurement method may be ultrasonic thickness measurement or microscope measurement, etc. Exemplarily, the corrosion rate = (pipe wall thickness before corrosion - pipe wall thickness after corrosion) / corrosion time, usually, the pipe wall thickness is in mm, and the corrosion time is in years.

[0041] In the embodiment of the present application, the horizontal infrared rays are emitted by the infrared level meter, and the infrared level meter is fixedly mounted on the lifting platform to realize the top-down / bottom-up movement of the horizontal infrared rays. For example, the lifting platform can be fixed by lifting the load-bearing wire rope. Thus, when the lifting platform moves from the zero point reference based on the preset interval, a plurality of horizontal transverse infrared rays are formed; the plurality of horizontal transverse infrared rays intersect with the plurality of vertical longitudinal lines to generate a plurality of cross-crossing intersections. For example, the preset interval can be 20-30 cm.

[0042] As a feasible implementation method, when in the inspection state (that is, the lifting platform is in the working state), as the lifting platform moves up and down, the intersection point of the infrared level and the ruler also moves up and down horizontally. After the lifting platform stops, the infrared level stops, and the intersection point of the infrared level and the ruler stops accordingly. After the inspection, the elevation of the corresponding scale and the corresponding pipe can be found in the table and the data of this position can be recorded. The actual position of each defect of each water-cooled wall tube is accurately reflected in the table. In this way, the grid-based precise positioning of water-cooled wall maintenance is truly realized, and every defect record of all water-cooled wall tubes is recorded without omission, and the actual position of each thickness measurement data measured can be accurately located.

[0043] As an example, the 648 water-cooled wall tubes in the entire furnace are classified and counted. There are 4 walls and 4 corner screens, with 145 tubes on each wall and 17 tubes on 1 corner screen. Each wall corresponds to a set of tables, so that all water-cooled wall tubes are presented in the table from top to bottom, left to right, or front to back. The three top sootblower openings on each side of the water-cooled wall are used as the zero point reference, and the ruler is hung vertically downward.

[0044] Through the boiler water-cooled wall tube anti-wear and explosion-proof inspection method and system provided by the present application, multiple vertical longitudinal lines corresponding to the water-cooled wall tubes are determined on each water-cooled wall wall based on a zero-point reference, so that multiple intersection points for collecting target data are determined by horizontal infrared rays and each of the vertical longitudinal lines, and the position of each intersection point and the target data corresponding to the intersection point are recorded, thereby achieving rapid quantification of the current inspection work, so as to facilitate comparison of previous target data during subsequent maintenance processes, so as to accurately judge or calculate the health status of the water-cooled wall and the main problems existing therein as well as the corrosion and thinning rate of the water-cooled wall tubes.

[0045] Example 2

[0046] Based on the above embodiments, this embodiment also provides a method for inspecting boiler water-cooled wall tubes for anti-wear and anti-explosion. Figure 3 An optional flow chart of the boiler water wall tube anti-wear and explosion-proof inspection method provided in this embodiment is as follows: Figure 3 As shown, after recording the position of each intersection and the target data corresponding to the intersection, the method of this embodiment further includes the following steps S301 to S302:

[0047] Step S301: After the water-cooled wall tube runs through a preset collection cycle, the target data is collected based on each intersection to obtain comparison target data corresponding to each intersection.

[0048] In the embodiment of the present application, when the water-cooled wall tube runs through a preset collection cycle, when collecting target data again, the interval between the two times is a preset collection cycle; illustratively, at a normal level, the preset collection cycle can be 1 year.

[0049] In the embodiment of the present application, the comparison target data is the newly collected data at the intersection, which is compared with the historical target data at the intersection. In the embodiment of the present application, when the number of historical target data is once, the historical target data is the last target data immediately adjacent to the current maintenance.

[0050] Here, it should be noted that the comparison target data is measured based on the same intersection position, and in order to ensure the scientific nature of the comparison results, the same collection method is used in each target data measurement process.

[0051] Step S302: based on the comparison target data, the target data, and the preset period, determine the wear amount of the water-cooled wall tube corresponding to each of the intersections; and if the wear amount of the problem intersection does not meet the preset conditions, process the water-cooled wall tube corresponding to the problem intersection.

[0052] In the embodiment of the present application, the wear amount of the water-cooled wall tube corresponding to each intersection point is the difference between the target data and the comparison target data within a preset period.

[0053] In an embodiment of the present application, when the wear amount of the problematic intersection reaches a preset tube replacement threshold, the water-cooled wall tube corresponding to the problematic intersection is replaced.

[0054] In an embodiment of the present application, when a protruding thinning area is determined based on the difference between the comparison target data and the target data, the preset acquisition period of the water-cooled wall wall can be shortened for the protruding thinning area, so that the corresponding acquisition frequency of the water-cooled wall wall is increased, so as to strengthen the detection of the water-cooled wall wall where the thinning area is located; here, the protruding thinning area is an area composed of at least two directly adjacent thinning intersections, and the difference between the comparison target data and the target data corresponding to the thinning intersection is less than the preset tube replacement threshold and greater than the average value of the difference of all intersections; at the same time, the preset interval of the longitudinal movement range of the lifting platform where the protruding thinning area is located can be shortened in the subsequent inspection process, so that the corresponding acquisition density of the protruding thinning area is increased; exemplarily, for the longitudinal movement range where the protruding thinning area is located, the preset interval of the movement of the lifting platform can be set to 10-20cm.

[0055] Similarly, after replacing the water-cooled wall tubes corresponding to the problem intersections, the data collection frequency and density of the tube replacement positions corresponding to the problem intersections can be increased according to actual conditions to ensure targeted maintenance of the water-cooled wall high-temperature corrosion thinning, blow damage, and tube replacement, thereby further improving the maintenance quality.

[0056] As a feasible implementation method, during the unit shutdown period, the shutdown time can be used to conduct centralized inspections on targeted locations such as prominent thinning areas and tube replacement locations.

[0057] Here, it should be noted that the anti-wear and explosion-proof inspection method for boiler water-cooled wall tubes of the embodiment of the present application has been put into practical application in the current boiler maintenance. Through the anti-wear and explosion-proof inspection of the water-cooled wall of this method, the unit can be kept shut down for a long period of time, which also plays an indispensable role in the healthy operation of the boiler water-cooled wall.

[0058] The embodiment of the present application also provides a boiler water-cooled wall tube anti-wear and explosion-proof inspection system. Figure 4 The schematic diagram of the structure of the boiler water wall tube anti-wear and explosion-proof inspection system 400 provided in the embodiment of the present application includes a determination module 401 and an inspection module 402:

[0059] A determination module 401 is used to determine vertical longitudinal lines corresponding to a plurality of water-wall tubes on each water-wall wall based on a zero point reference;

[0060] The inspection module 402 is used to determine, for each of the water-cooled wall walls, multiple intersection points for collecting target data based on horizontal infrared rays and each of the vertical longitudinal lines, and record the position of each intersection point and the target data corresponding to the intersection point; wherein the horizontal infrared rays are movable, and the target data is the thickness measurement data of the water-cooled wall tube corresponding to the intersection point.

[0061] The wear-proof and explosion-proof inspection method for boiler water-cooled wall tubes in the embodiment of the present application can timely summarize and analyze the water-cooled wall inspection data, and timely make an overall estimate of the water-cooled wall maintenance workload, grasp the maintenance quality and maintenance progress, and provide assistance for the smooth progress of the maintenance; through the comparison of previous maintenance data, it can analyze the current equipment health status and the main problems, as well as preventive measures, and successfully avoid accidents caused by leakage due to inadequate inspection and analysis of water-cooled wall tubes. In addition, the embodiment of the present application records the actual thickness measurement data and the replacement and spraying positions of each maintenance in a table. By comparing the data of previous years, the health status of the water-cooled wall and the spraying effect can be grasped as a whole. Through data analysis, the wear rate and corrosion rate are calculated to provide effective technical support for prevention and the planned replacement of tubes in the next year.

[0062] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0063] The units involved in the embodiments of the present invention may be implemented by software or hardware, and the units described may also be arranged in a processor. The names of these units do not, in some cases, limit the units themselves.

[0064] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0065] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

[0066] In the several embodiments provided in the present application, it should be understood that the disclosed systems, modules and methods can be implemented in other ways. For example, the module embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, modules or units, which can be electrical, mechanical or other forms.

[0067] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A method for inspection of boiler water wall tubes for wear and explosion prevention, characterized in that: include: Based on the zero point reference, vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes are determined on each water-cooled wall; For each of the water-cooled wall walls, multiple intersection points for collecting target data are determined based on horizontal infrared rays and each of the vertical longitudinal lines, and the position of each intersection point and the target data corresponding to the intersection point are recorded; wherein the horizontal infrared rays are movable, and the target data include thickness measurement data, spray marks, tube replacement marks and surface corrosion conditions of the water-cooled wall tubes corresponding to the intersection points.

2. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 1 is characterized in that: The method of determining vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes on each water-cooled wall based on the zero point reference includes: Determine the transverse line where the soot blower port of the uppermost layer of each water-cooled wall is located as the zero point reference; wherein the soot blower ports of the uppermost layers of all the water-cooled wall are located at the same elevation; A vertical ruler is hung at any sootblower port to obtain the elevation standard of the vertical longitudinal line, and vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes are established based on the elevation standard.

3. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 1, characterized in that: The horizontal infrared ray is movable, including: the horizontal infrared ray is emitted by an infrared level meter, and the infrared level meter is fixedly installed on a lifting platform to realize the top-down / bottom-up movement of the horizontal infrared ray; the multiple intersection points for collecting target data based on the horizontal infrared ray and each of the vertical longitudinal lines are determined, including: When the lifting platform moves from the zero point reference based on a preset interval, a plurality of horizontal transverse infrared rays are formed; the plurality of horizontal transverse infrared rays intersect with the plurality of vertical longitudinal lines to generate a plurality of cross-intersecting intersections.

4. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 3 is characterized in that: The method further comprises: After the water-cooled wall tube runs through a preset collection cycle, the target data is collected based on each intersection to obtain the comparison target data corresponding to each intersection; Based on the comparison target data, the target data, and the preset period, the wear amount of the water-cooled wall tube corresponding to each of the intersections is determined; and when the wear amount of the problem intersection does not meet the preset conditions, the water-cooled wall tube corresponding to the problem intersection is processed.

5. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 4 is characterized in that: The processing of the water-cooled wall tubes corresponding to the problematic intersections includes: In the case where the protruding thinning area is determined based on the difference between the compared target data and the target data, the preset acquisition period of the water-cooled wall is shortened so that the acquisition frequency corresponding to the water-cooled wall is increased; Among them, the protruding thinning area is an area composed of at least two directly adjacent thinning intersections, and the difference between the comparison target data and the target data corresponding to the thinning intersection is less than a preset tube replacement threshold and greater than the average value of the differences of all the intersections.

6. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 5, characterized in that: The processing of the water-cooled wall tubes corresponding to the problematic intersections also includes: When the protruding thinning area is detected, the preset interval of the longitudinal movement of the lifting platform where the protruding thinning area is located is shortened, so that the collection density corresponding to the protruding thinning area is increased.

7. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 4, characterized in that: When the wear amount at the problem intersection does not meet the preset conditions, the water-cooled wall tubes corresponding to the problem intersection are processed, including: when the wear amount at the problem intersection reaches a preset tube replacement threshold, the water-cooled wall tubes corresponding to the problem intersection are replaced.

8. The method for inspection of boiler water wall tubes for anti-wear and anti-explosion according to claim 7, characterized in that: The method further comprises: After the water-cooled wall tubes corresponding to the problematic intersections are replaced, the data acquisition frequency and density of the tube replacement positions corresponding to the problematic intersections are increased.

9. The method for inspecting boiler water wall tubes for anti-wear and anti-explosion according to any one of claims 1 to 8, characterized in that: The target data also includes: any one of corrosion rate, temperature and pressure.

10. A boiler water wall tube anti-wear and explosion-proof inspection system, used to implement the boiler water wall tube anti-wear and explosion-proof inspection method according to any one of claims 1 to 9, characterized in that: include: A determination module, used for determining vertical longitudinal lines corresponding to a plurality of water-cooled wall tubes on each water-cooled wall based on a zero point reference; An inspection module is used to determine multiple intersection points for collecting target data for each of the water-cooled wall walls based on horizontal infrared rays and each of the vertical longitudinal lines, and record the position of each intersection point and the target data corresponding to the intersection point; wherein the horizontal infrared rays are movable, and the target data is the thickness measurement data of the water-cooled wall tube corresponding to the intersection point.

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