Auxiliary device for multi-channel electromagnetic detection of boiler water cooling wall

Abstract

The invention discloses an auxiliary device for multi-channel electromagnetic detection of a boiler water cooling wall, the auxiliary device is a non-ferromagnetic piece, and the auxiliary device comprises a plate-type main body; the plurality of fixing rods are arranged on one side of the detected water cooling wall of the plate type main body at intervals, and the fixing rods are configured to be suitable for mounting a sensor mounting card, a camera mounting card and a speed measurement encoder mounting card; the roller part plays a role in guiding and moving; a mounting interface part of the telescopic rod; and the cable fixing clamp is used for fixing the cable. According to the auxiliary device for multi-channel electromagnetic detection of the boiler water cooling wall, interference on detection of electromagnetic signals can be effectively avoided, and the problem that the distribution state of detection information in a certain area cannot be well expressed due to isolation of detection signals between pipes in single-channel electromagnetic detection is solved. The problems of stress concentration and fatigue damage of a certain area of the membrane type water-cooled wall are inconvenient to judge, so that the reliability of a detection result can be improved; and meanwhile, the working efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to a water-cooled wall intelligent detection technology in the field of non-destructive detection technology, and in particular to an auxiliary device for multi-channel electromagnetic detection of boiler water-cooled walls. Background Art

[0002] Power plant boilers are a crucial piece of equipment in thermal power plants, and their safe and stable operation is crucial for ensuring the continuous generation of power. Data indicates that boiler failures account for approximately 40% of all thermal power plant failures, and approximately 70% of these are caused by failures and leaks in the "four tubes" (i.e., water-wall tubes, superheater tubes, reheater tubes, and economizer tubes). Water-wall tubes are the primary heating surfaces in power plant boilers. Due to their direct contact with flames or flue gases, they operate in an extremely harsh environment. During operation, these tubes often experience a range of issues, including wear, corrosion, stress corrosion, fatigue failure, and overheating failure, that impact the safe operation of thermal power plants. Failure of the water-wall tubes can result in severe economic losses and impact electricity supply. Therefore, timely nondestructive testing (NDT) of the water-wall tubes is crucial for ensuring the safe operation of thermal power plants.

[0003] The high heat load area between the lower burner and the overburnt air within the water-cooled wall of a large coal-fired boiler is a high-risk area for high-temperature corrosion, stress corrosion, and fatigue damage. This area is large, has a large number of tubes, and is spatially located in a unique location. Consequently, inspecting this area is labor-intensive and requires high-altitude work. Certain electromagnetic inspections must prevent electromagnetic interference with the electromagnetic information of the water-wall tubes themselves and the electromagnetic signals of the inspection sensors. However, nearly all current wall-climbing robots use magnetic adsorption to crawl along the water-wall, necessitating manual inspection. Without other tools, manual inspections require individual tube inspections. This isolation makes it difficult to correlate and communicate the inspection signals between tubes, hindering the ability to accurately represent the distribution of electromagnetic information relative to the water-wall tubes within a specific area. This results in inefficient work and makes it difficult to analyze and identify stress concentration and fatigue damage issues within a specific area of ​​the water-wall. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an auxiliary device that can effectively solve the problem of interference between other auxiliary detection devices and the electromagnetic information of the water-cooled wall pipe itself and the electromagnetic signal of the sensor, thereby improving the accuracy of the detection results. At the same time, the distribution of electromagnetic information obtained from detecting water-cooled wall pipes in a certain area can be obtained by analyzing the relationship between multi-channel detection information, enabling multiple detection devices to perform simultaneous detection, thereby improving detection efficiency. In addition, the auxiliary device can also realize the detection, analysis and diagnosis of stress concentration and fatigue damage in the membrane water-cooled wall area.

[0005] According to the auxiliary device for multi-channel electromagnetic detection of boiler water-cooled walls of the present invention, the auxiliary device is a non-ferromagnetic part, and the auxiliary device includes: a plate-type main body made of non-ferromagnetic plate material; a plurality of fixing rods, wherein the plurality of fixing rods are arranged at intervals on one side of the detected water-cooled wall of the plate-type main body, and the fixing rods are configured to be suitable for installing a sensor mounting card, a camera mounting card and a speed encoder mounting card, the sensor mounting card is suitable for installing a sensor, the camera mounting card is suitable for installing a camera, and the speed encoder mounting card is suitable for installing a speed encoder; a roller part that plays a guiding and moving role includes: two roller mounting beams and four rollers respectively installed at both ends of the two roller mounting beams, the roller mounting beams are connected to the plate-type main body by fasteners, and the plate-type main body enables the auxiliary device to move freely through the rollers; the installation interface component of the telescopic rod includes: a connecting end, the connecting end is configured to be suitable for installing the telescopic rod selected during detection; and a cable fixing card for fixing the cable.

[0006] According to the auxiliary device for multi-channel electromagnetic detection of boiler water-cooled walls of the present invention, by providing a plate-type main body made of non-ferromagnetic plate and multiple fixing rods, interference with the detection electromagnetic signal can be effectively avoided, and the problem that single-channel electromagnetic detection cannot well express the distribution state of detection information in a certain area due to the isolation of detection signals between pipes, and is not convenient for judging stress concentration and fatigue damage in a certain area of ​​the membrane water-cooled wall, can be solved, thereby improving the reliability of the detection results; at the same time, the work efficiency can be greatly improved through the multi-channel detection method.

[0007] According to some embodiments of the present invention, the plate-type body has folded edges on both sides in the width direction that are away from the side of the fixing rod. The folded edges are formed by bending the two sides of the plate-type body toward the side away from the fixing rod, which can greatly increase the rigidity of the plate-type body, thereby ensuring the stability of the detection device.

[0008] According to some embodiments of the present invention, scale lines are formed on one side surface of the plate-type body in the thickness direction, and the scale lines extend along the length direction of the plate-type body. The scale lines are used to indicate the relative positions of the fixing rod and the plate-type body in the length direction of the plate-type body.

[0009] According to some embodiments of the present invention, any one of the fixing rods extends along the width direction of the plate-like body, and its position along the length direction of the plate-like body is adjustable.

[0010] According to some embodiments of the present invention, a mounting groove is formed on the plate-type body and passes through the plate-type body along the thickness direction of the plate-type body. The mounting groove extends into a strip groove along the length direction of the plate-type body. A mounting hole is formed on the fixing rod. The fixing rod is fastened to the plate-type body by the fastener passing through the strip groove and the mounting hole.

[0011] According to some embodiments of the present invention, there are two strip grooves, which are spaced apart along the width direction of the plate-type body, and each strip groove is suitable for assembling a plurality of fixing rods with the plate-type body using the fastener.

[0012] According to some embodiments of the present invention, the two roller mounting beams extend along the width direction of the plate-type body and are arranged between two adjacent fixing rods.

[0013] According to some embodiments of the present invention, the outer periphery of the roller is covered with a rubber material.

[0014] According to some embodiments of the present invention, a through hole is formed on the plate-type body and passes through the plate-type body along the thickness direction of the plate-type body, and the installation interface component of the telescopic rod also includes: a bolt, a nut, a sphere and a spherical shell, the bolt is suitable for passing through the through hole and cooperating with the nut to fix the installation interface component of the telescopic rod to the plate-type body; the sphere is threadedly connected to the end of the bolt away from the plate-type body; the spherical shell is rotatably sleeved on the radial outside of the sphere, and the connecting end is fixedly connected to the spherical shell.

[0015] According to some embodiments of the present invention, a receiving cavity is formed inside the connecting end, and the cable is suitable for being arranged in the receiving cavity.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the arrangement of a detection system, pipes, and fins according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram showing another angle of arrangement of the detection system with the pipes and fins is shown;

[0019] Figure 3 yes Figure 1 A schematic diagram of the auxiliary device shown in;

[0020] Figure 4 yes Figure 3 A schematic diagram of a plate-type body shown in ;

[0021] Figure 5 It is along Figure 4 A cross-sectional view of line AA shown in FIG;

[0022] Figure 6 is a schematic diagram of the arrangement of a detection system, pipes, and fins according to another embodiment of the present invention;

[0023] Figure 7 It is the relationship diagram between the sensor indication and the detection position;

[0024] Figure 8 It is a surface diagram showing the relationship between the sensor indication and the detection position.

[0025] Reference numerals:

[0026] 100. Auxiliary devices;

[0027] 10. Plate-type body; 11. Folded edge; 12. Strip groove; 13. Mounting hole; 14. Scale line; 15. Through hole;

[0028] 20. Fixing rod; 21. Fastener;

[0029] 31. Sensor installation card; 32. Camera installation card; 33. Speed ​​encoder installation card;

[0030] 51. Roller mounting beam; 52. Roller;

[0031] 60. Mounting interface component of telescopic rod; 61. Connecting end; 62. Bolt; 63. Nut; 64. Sphere; 65. Sphere shell;

[0032] 70. Cable fixing card; 80. Integrated sensor. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] Reference below Figures 1-8 An auxiliary device 100 for multi-channel electromagnetic detection of boiler water walls according to an embodiment of the present invention is described.

[0035] like Figure 1-Figure 2 As shown, according to an embodiment of the present invention, an auxiliary device 100 for multi-channel electromagnetic detection of boiler water-cooled walls is provided. The auxiliary device 100 is a non-ferromagnetic part. The auxiliary device 100 includes: a plate-type main body 10 made of a non-ferromagnetic plate material, a plurality of fixing rods 20, a roller 52 part for guiding and moving, an installation interface component 60 for the telescopic rod, and a cable fixing card 70 for fixing the cable.

[0036] Specifically, the plate-type main body 10 is made of non-ferromagnetic plate material, and it does not have electromagnetic adsorption devices and electromagnetic induction phenomena generated by strong electricity. Therefore, the plate-type main body 10 of the present application is made of the above-mentioned non-ferromagnetic material, which can effectively solve the problem of interference of the auxiliary device 100 with the electromagnetic information of the water-cooled wall pipe itself and the electromagnetic signal of the sensor during the detection process, thereby improving the detection accuracy and reliability of the auxiliary device 100.

[0037] It should be noted that the auxiliary device 100 of this embodiment is used to assist in electromagnetic testing of boiler water walls in the power engineering industry. The boiler water walls are membrane-type water walls, which are composed of a plurality of pipes, with fins connected between two connected pipes, and the pipes and fins are welded together. During the testing process, the auxiliary device 100 of this application slides along the surface of the membrane-type water walls. It should be further noted that the auxiliary device 100 of this application can also be used to assist in electromagnetic testing of boiler water walls in other industries, and the boiler water walls are not limited to membrane-type water walls.

[0038] A plurality of fixing rods 20 are arranged at intervals on one side of the water-cooled wall to be detected of the plate-type main body 10. The fixing rods 20 are configured to be suitable for installing a sensor mounting card 31, a camera mounting card 32 and a speed encoder mounting card 33. The sensor mounting card 31 is suitable for installing a sensor, the camera mounting card 32 is suitable for installing a camera, and the speed encoder mounting card 33 is suitable for installing a speed encoder.

[0039] Specifically, each fixing rod 20 can be adapted to mount one sensor mounting card 31, one camera mounting card 32, or one speed encoder mounting card 33. Thus, multiple fixing rods 20 can be equipped with only multiple sensor mounting cards 31, multiple camera mounting cards 32, or multiple speed encoder mounting cards 33. Alternatively, they can be equipped with any two of the three types of mounting cards, or all three. The specific method can be selected based on actual circumstances.

[0040] Among them, the sensor installation card 31 is used to install sensors, and the sensors are used to detect defects in the pipes or water-cooled wall diaphragms of the boiler. The sensor installation card 31 can be made according to the specific shape of the sensor selected for detection. Specifically, the number of fixing rods 20 is multiple, and thus the number of sensor installation cards 31 can be one or more, and further, the number of sensors can be one or more, for example, one, two, three or more. Therefore, the auxiliary device 100 in the above embodiment can not only realize the detection of a single pipeline, but also realize the simultaneous detection of multiple pipelines, and further realize the data correlation analysis of multiple pipelines, and further, the auxiliary device 100 of this embodiment can assist the detection device in realizing the detection of stress concentration and fatigue damage in the membrane water-cooled wall area.

[0041] The camera mounting card 32 is used to mount a camera, which is used to inspect and record the apparent condition of the boiler water wall pipes or water wall diaphragms. Specifically, if there are multiple fixing rods 20, the number of camera mounting cards 32 can be one or more, and the number of cameras can also be one or more, for example, one, two, three, or more.

[0042] The speed encoder mounting card 33 is used to mount a speed encoder, wherein the speed encoder is used to determine the real-time position of the auxiliary device 100 and / or detect the movement speed of the sensor or the auxiliary device 100. Specifically, there are multiple fixing rods 20. Therefore, the number of speed encoder mounting cards 33 can be one or more, and the number of speed encoders can also be one or more, for example, one, two, three, or more.

[0043] It should be noted that the speed encoder is mainly analyzed in conjunction with the detection results of the sensor. Figure 7 As shown, the instrument indication h, the distance x between the location of the collected data and the detection starting position can be used to locate and analyze the corrosion situation of the pipeline inner wall. Figure 8 As shown, the relationship between the instrument readings from multiple sensor tests and the detection positions obtained by the tachometer encoder can be displayed as a curved surface using 3D technology, allowing intuitive judgment of the detection results of stress concentration or fatigue damage in a certain area of ​​the water-cooled wall. It should be further explained that the relationship between the instrument readings from multiple sensor tests and the detection positions obtained by the tachometer encoder can also be analyzed and judged using some analysis software, thereby obtaining the stress concentration level in a certain area of ​​the water-cooled wall and the fatigue damage caused by stress concentration.

[0044] Optionally, each sensor mounting card 31 can be equipped with multiple sensors for testing, or an arc-shaped integrated sensor can be used to integrate multiple sensors. For example, additional sensors can be installed based on the number of welds to be tested, and the sensors can be aligned with the welds. In this way, the auxiliary device 100 of the present application can be used to test the quality of welds between fins and tubes.

[0045] It should be noted that the detection of defects in the water-cooled wall pipes or water-cooled wall diaphragms includes: inner wall corrosion detection, damage detection, and weld quality between fins and tubes.

[0046] Reference Figure 1-Figure 2 As shown, the roller 52 portion that serves as a guide and movement includes two roller mounting beams 51 and four rollers 52 mounted at both ends of the two roller mounting beams 51. The roller mounting beams 51 are connected to the plate-type body 10 via fasteners 21. The plate-type body 10 enables the auxiliary device 100 to move freely via the rollers 52. This allows the auxiliary device 100 to crawl on the surface of the water-cooled wall tubes, thereby enabling the auxiliary device 100 to climb to a relatively far position, thereby enabling the auxiliary device 100 to perform large-area inspections.

[0047] Reference Figure 3 As shown, the telescopic rod mounting interface component 60 includes a connection end 61, which is configured to accommodate the telescopic rod selected for installation and testing. This facilitates replacement of the telescopic rod according to actual conditions, thereby improving the adaptability of the auxiliary device 100. Furthermore, it will be appreciated that the auxiliary device 100 primarily performs pipeline testing through manual operation, effectively preventing electromagnetic signals generated by the electrical components of the motorized device from interfering with the sensor signal, thereby improving detection accuracy.

[0048] The cable fixing card 70 is mainly used to fix the cable, and the cable fixing card 70 can be selected according to the specific conditions of the detection cable. Figure 4 As shown, a plurality of mounting holes 13 are formed on the plate-type body 10, wherein the plurality of mounting holes 13 are respectively arranged on one side of the edge of the strip groove 12 facing the plate-type body 10 and on the periphery of the mounting interface of the telescopic rod. The cable mounting card is fixed in the mounting hole 13 for fixing and restraining the cable, thereby ensuring the neatness of the cable.

[0049] According to the auxiliary device 100 for multi-channel electromagnetic detection of boiler water-cooled walls of the present invention, by providing a plate-type main body 10 made of non-ferromagnetic plate and a plurality of fixing rods 20, interference with the detection electromagnetic signal can be effectively avoided, and the problem that single-channel electromagnetic detection cannot well express the distribution state of detection information in a certain area due to the isolation of detection signals between pipes, and is not convenient for judging stress concentration and fatigue damage in a certain area of ​​the membrane water-cooled wall, can be solved, thereby improving the reliability of the detection results; at the same time, the multi-channel detection method can greatly improve work efficiency.

[0050] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, the plate-type body 10 has folded edges 11 on both sides of the width direction, facing away from the fixing rod 20. The folded edges 11 are formed by bending both sides of the plate-type body 10 toward the side facing away from the fixing rod 20. This increases the structural strength of the plate-type body 10, thereby improving its reliability and service life. In addition, the bending operation is relatively simple, thereby reducing the difficulty of manufacturing the plate-type body 10 and further reducing the production cost of the auxiliary device 100.

[0051] According to some embodiments of the present invention, Figure 4 As shown, scale lines 14 are formed on one side surface of the plate-type body 10 in the thickness direction. The scale lines 14 extend along the length of the plate-type body 10 and are used to indicate the relative position of the fixing rods 20 and the plate-type body 10 in the length direction of the plate-type body 10. This facilitates positioning of multiple fixing rods 20. Therefore, when inspecting water-cooled wall tubes of different specifications or different spacings, the position of the fixing rods 20 can be directly adjusted without the need for other auxiliary devices 100 for positioning, thereby simplifying the inspection operation steps and improving the inspection efficiency.

[0052] According to some embodiments of the present invention, Figure 1 As shown, any one of the fixing rods 20 extends along the width of the plate-type body 10 and is adjustable in position along the length of the plate-type body 10. This allows the position of the detection device to be adjusted based on actual conditions, allowing the auxiliary device 100 to adapt to the detection of water-cooled wall tubes of varying specifications and spacing, thereby improving the applicability of the auxiliary device 100. Furthermore, the fixing rods 20 can increase the extended length of the detection device, thereby expanding the detection range and enhancing the applicability of the auxiliary device 100. It should be noted that the dimensions of the fixing rods 20 can be designed based on actual needs.

[0053] Optionally, the fixing rod 20 can be a telescopic rod, so that the position of the detection device can be adjusted, thereby further increasing the detection range of the auxiliary device 100. At the same time, there is no need to replace the fixing rod 20, reducing the disassembly steps, thereby improving the applicability of the auxiliary device 100.

[0054] According to some embodiments of the present invention, Figure 3-Figure 5 As shown, a mounting groove is formed on the plate-type body 10 and passes through the plate-type body 10 along the thickness direction of the plate-type body 10. The mounting groove extends into a strip groove 12 along the length direction of the plate-type body 10. A mounting hole 13 is formed on the fixing rod 20. The fixing rod 20 is fastened to the plate-type body 10 by a fastener 21 passing through the strip groove 12 and the mounting hole 13.

[0055] Among them, the mounting groove is formed as a strip groove 12, which can simplify the structure of the auxiliary device 100, reduce the manufacturing steps of the auxiliary device 100, and thus reduce the production cost of the auxiliary device 100; at the same time, the strip groove 12 can also ensure that the position of any fixing rod 20 along the length direction of the plate-type main body 10 is adjustable, so that the position of the detection device can be adjusted according to actual conditions, so that the auxiliary device 100 can adapt to the detection of water-cooled wall tubes of different specifications and spacings, thereby improving the applicability of the auxiliary device 100; in addition, it is also possible to limit multiple fixing rods 20 to be arranged on the same horizontal line, so that multiple detection devices can be carried out synchronously during detection, thereby increasing the correlation of detection information between adjacent water-cooled wall pipes, so that the auxiliary device 100 can detect stress concentration and fatigue damage problems in a certain area of ​​the water-cooled wall.

[0056] According to some embodiments of the present invention, Figure 3-Figure 5 As shown, there are two strip grooves 12, spaced apart along the width of the plate-type body 10. Each strip groove 12 is suitable for assembling a plurality of fixing rods 20 with the plate-type body 10 using fasteners 21. In this way, different detection devices can be arranged in corresponding positions, thereby optimizing the layout of the auxiliary device 100.

[0057] According to some embodiments of the present invention, Figure 1 As shown, two roller mounting beams 51 extend along the width direction of the plate-type body 10 and are arranged between two adjacent fixing rods 20. It is understood that the extension direction of the roller mounting beams 51 is the same as the extension direction of the fixing rods 20. This can prevent interference between the rollers 52 and detection devices such as sensors, thereby ensuring detection accuracy.

[0058] According to some embodiments of the present invention, the outer periphery of the roller 52 is coated with a rubber material. This can increase the friction between the roller 52 and the water wall surface, thereby preventing the auxiliary device 100 from slipping during movement, thereby improving the operability of the auxiliary device 100 when manually operated to crawl.

[0059] Optionally, the width of the roller 52 is designed according to the surface structure of the water-cooled wall tube. It should be noted that the water-cooled wall tube includes multiple tubes, and there are fins between two adjacent tubes. The roller 52 is generally arranged to move on the fins. Therefore, it can be understood that the width of the roller 52 is adapted to the width of the fins. In this way, while ensuring the normal movement of the roller 52, the two adjacent tubes can also play a role in limiting and guiding the operation of the roller 52, thereby ensuring that the auxiliary device 100 moves along the axial direction of the water-cooled wall tube when crawling, thereby improving the accuracy of the detection results.

[0060] Optionally, the position of each roller mounting beam 51 along the length direction of the plate-type main body 10 can be adjusted, so that the position of the roller 52 can be ensured to correspond to the fins between the tubes, thereby improving the smoothness of the operation of the auxiliary device 100.

[0061] According to some embodiments of the present invention, Figure 3-Figure 4 As shown, the plate-type body 10 is formed with a through hole 15 that passes through the plate-type body 10 along the thickness direction of the plate-type body 10. The mounting interface component 60 of the telescopic rod also includes: a bolt 62, a nut 63, a ball 64, and a ball shell 65. The bolt 62 is adapted to pass through the through hole 15 and cooperate with the nut 63 to secure the mounting interface component 60 of the telescopic rod to the plate-type body 10; the ball 64 is threadedly connected to the end of the bolt 62 away from the plate-type body 10; the ball shell 65 is rotatably mounted on the radially outer side of the ball 64, and the connecting end 61 is fixedly connected to the ball shell 65. It is understood that the connecting end 61 is rotatable relative to the plate-type body 10, thereby allowing the angle between the telescopic rod and the plate-type body 10 to be adjusted at any time, thereby enabling the auxiliary device 100 to be accurately placed in the detection position, thereby achieving pipeline detection.

[0062] Specifically, refer to Figure 4-Figure 5 A through hole 15 is formed on the plate body 10 and passes through the plate body 10 along the thickness direction of the plate body 10. One end of the bolt 62 passes through the through hole 15 and extends out, and the bolt 62 is fixed to the plate body 10 by a nut 63; an internal threaded hole is provided on the sphere 64, and one end of the bolt 62 away from the plate body 10 is threadedly engaged with the sphere 64; the spherical shell 65 is sleeved on the radial outside of the sphere 64 and is rotatable relative to the sphere 64, and one end of the telescopic rod is fixed to the radial outside of the spherical shell 65.

[0063] It should be noted that lubricating oil with high viscosity is applied between the sphere 64 and the spherical shell 65, so that a certain resistance to sliding can be generated between the sphere 64 and the spherical shell 65, thereby preventing the auxiliary device 100 from slipping under the action of gravity.

[0064] According to some embodiments of the present invention, a receiving cavity is formed inside the connection end 61, and the cable is suitable for being arranged in the receiving cavity. This can further improve the neatness of the cable, ensure that the arrangement of the cable does not affect the detection operation, and improve the detection reliability of the auxiliary device 100.

[0065] The following will refer to Figures 1-8 An auxiliary device 100 for multi-channel electromagnetic detection of boiler water walls according to three specific embodiments of the present invention is described.

[0066] Example 1:

[0067] Reference Figure 1 The auxiliary device 100 includes: a plate-type main body 10 made of non-ferromagnetic plate, multiple fixing rods 20, a roller 52 part for guiding and moving, an installation interface component 60 of the telescopic rod, and a cable fixing card 70 for fixing the cable.

[0068] Among them, the plate-type main body 10 is made of non-ferromagnetic plate material, and the plate-type main body 10 is formed into a flat plate shape. The plate-type main body 10 has a folded edge 11 on both sides in the width direction, which is bent along the circumference of the plate-type main body 10 toward one side in the thickness direction of the plate-type main body 10; at the same time, the plate-type main body 10 has strip grooves 12 formed at both ends in the width direction, which pass through the plate-type main body 10 along the thickness direction of the plate-type main body 10 and extend along the length direction of the plate-type main body 10; and the plate-type main body 10 has a scale line 14 formed on the surface of one side in the thickness direction, which extends along the length direction of the plate-type main body 10. The scale line 14 is used to indicate the relative position of the first mounting member and the plate-type main body 10 in the length direction of the plate-type main body 10.

[0069] Any one of the fixing rods 20 extends along the width direction of the plate-type body 10, and multiple fixing rods 20 are arranged at intervals along the length direction of the plate-type limb on one side of the detected water-cooled wall of the plate-type body 10. A mounting hole 13 is formed on one end of any one of the fixing rods 20, and the fixing rod 20 is fastened to the plate-type body 10 through the fastener 21 passing through the strip groove 12 and the mounting hole 13; the other end of the fixing rod 20 is configured to be suitable for installing a sensor mounting card 31, a camera mounting card 32 and a speed encoder mounting card 33. The sensor mounting card 31 is suitable for installing a sensor, the camera mounting card 32 is suitable for installing a camera, and the speed encoder mounting card 33 is suitable for installing a speed encoder.

[0070] Specifically, the number of sensor mounting cards 31 and camera mounting cards 32 is multiple, and the number of speed encoder mounting cards 33 is one, wherein the number of sensor mounting cards 31 and camera mounting cards 32 is the same, and multiple sensor mounting cards 31 are arranged at intervals on the same side of the plate-type body 10 along the length direction of the plate-type body 10; multiple camera mounting cards 32 are arranged at intervals along the length direction of the plate-type body 10 on the side of the plate-type body 10 away from the sensor, and in the width direction of the plate-type body 10, and one sensor mounting card 31 and one camera mounting card 32 are arranged on the same straight line.

[0071] The roller 52 part includes: two roller mounting beams 51 and four rollers 52 respectively installed at both ends of the two roller mounting beams 51. The two roller mounting beams 51 extend along the width direction of the plate-type body 10 and are arranged between two adjacent fixed rods 20. The roller mounting beams 51 are connected to the plate-type body 10 through fasteners 21. The plate-type body 10 enables the auxiliary device 100 to move freely through the rollers 52; the rollers 52 are rotatable relative to the roller mounting beams 51, and the outer periphery of the rollers 52 is covered with rubber material.

[0072] The telescopic rod mounting interface component 60 includes a bolt 62, a nut 63, a ball 64, a spherical shell 65, and a connecting end 61. The plate-type body 10 is formed with a through-hole 15 extending through the plate-type body 10 along its thickness. One end of the bolt 62 extends through the through-hole 15 and is secured to the plate-type body 10 via the nut 63. The spherical shell 64 is provided with an internal threaded hole, and the end of the bolt 62 facing away from the plate-type body 10 is threadedly engaged with the spherical shell 64. The spherical shell 65 is mounted radially outward of the spherical shell 64 and is rotatable relative to the spherical shell 65. One end of the telescopic rod is fixed radially outward of the spherical shell 65. The connecting end 61 is configured to accommodate the telescopic rod selected for installation and testing. Furthermore, the connecting end 61 has a housing formed within it, into which the cable is arranged.

[0073] When inspecting water-wall pipes, the positions of the fixing rod 20 and the roller mounting beam 51 are first adjusted based on the pipe diameter and pipe spacing of the inspected water-wall pipes, so that the roller 52 can roll normally on the fins between the pipes and the axis of the fixing rod 20 substantially coincides with the axis of the pipes. The sensor mounting card 31, camera mounting card 32, and speed encoder mounting card 33 are then installed based on the number of pipes. The sensors, cameras, and speed encoders are then installed accordingly. An appropriate telescopic rod is then selected and mounted on the panel body 10. The length of the telescopic rod is adjusted based on the actual inspection position and inspection range. Simultaneously, the relative angle between the panel body 10 and the telescopic rod is manually adjusted based on the on-site inspection starting position and the inspector's working position. This allows the auxiliary device 100 to be placed at the inspection position by operating the telescopic rod, with the rolling direction of the roller 52 substantially aligned with the extension direction of the fins. The auxiliary device 100 is then moved to the initial position of the inspection pipe, and the movement of the auxiliary device 100 is manually controlled via the telescopic rod, thereby enabling the inspection system to inspect the water-wall pipes.

[0074] When the inspection system starts, multiple sensors, multiple cameras and speed encoders synchronously feed back signals to the central controller. The central controller receives and records the signals, and then analyzes the data as needed to determine the defects and damage of the pipelines in the inspection area.

[0075] When a pipeline inspection is completed at one location and a new area needs to be inspected, the inspected area is marked to prevent repeated inspections. It should be noted that the area inspected once can be marked with a marker, slate, or other suitable marking material, without limitation. Furthermore, the location of a defect can be marked to facilitate subsequent defect treatment. Excessively high locations can be marked manually using a telescopic rod, or an automatic marking device can be added to the auxiliary device 100 to automatically mark according to the inspection results.

[0076] In addition, it needs to be further explained that when using the detection system to detect stress problems in water-cooled wall pipes, if a certain stress concentration area cannot be covered by one detection stroke during the detection process, the placement of the detection device should be adjusted to make the detection device cover the area as much as possible in one detection stroke, so as to facilitate the detection data analysis of the entire stress concentration area.

[0077] According to the auxiliary device 100 for multi-channel electromagnetic detection of boiler water-cooled walls of the present invention, by providing a plate-type main body 10 made of non-ferromagnetic plate and a plurality of fixing rods 20, interference with the detection electromagnetic signal can be effectively avoided, and the problem that single-channel electromagnetic detection cannot well express the distribution state of detection information in a certain area due to the isolation of detection signals between pipes, and is not convenient for judging stress concentration and fatigue damage in a certain area of ​​the membrane water-cooled wall, can be solved, thereby improving the reliability of the detection results; at the same time, the multi-channel detection method can greatly improve work efficiency.

[0078] Example 2:

[0079] Reference Figure 6 The structure of this embodiment is roughly the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. The only difference is that each sensor mounting card 31 in the first embodiment fixes one sensor, while each sensor mounting card 31 in the second embodiment can fix multiple sensors.

[0080] Example 3,

[0081] Reference Figure 6 The structure of this embodiment is roughly the same as that of the second embodiment, wherein the same components are marked with the same reference numerals. The only difference is that the multiple sensors in the second embodiment are separate devices, while the multiple sensors in the third embodiment are integrated into one piece.

[0082] Specifically, the auxiliary device 100 also includes an integrated sensor 80, and the sensor mounting card 31 is suitable for being fixed to the integrated sensor 80. Multiple sensors are integrated into one through the integrated sensor 80. In this way, when the water-cooled wall needs to be inspected, multiple sensors can be integrated into one first, and then the integrated sensor 80 can be fixed to the sensor mounting card 31, thereby improving the detection rate.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0085] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0087] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A multi-channel electromagnetic detection auxiliary device (100) for boiler water-cooled walls, characterized in that: The auxiliary device (100) is a non-ferromagnetic component, and the auxiliary device (100) comprises: A plate-type main body (10) made of a non-ferromagnetic plate; A plurality of fixing rods (20), the plurality of fixing rods (20) being arranged at intervals on one side of the detected water-cooled wall of the plate-type body (10), the fixing rods (20) being configured to be suitable for installing a sensor mounting card (31), a camera mounting card (32), and a speed encoder mounting card (33), the sensor mounting card (31) being suitable for installing a sensor, the camera mounting card (32) being suitable for installing a camera, and the speed encoder mounting card (33) being suitable for installing a speed encoder; The roller (52) portion having a guiding and moving function comprises: two roller mounting beams (51) and four rollers (52) respectively mounted on both ends of the two roller mounting beams (51); the roller mounting beams (51) are connected to the plate-type body (10) via fasteners (21); and the plate-type body (10) enables the auxiliary device (100) to move freely via the rollers (52); The installation interface component (60) of the telescopic rod comprises: a connecting end (61), wherein the connecting end (61) is configured to be suitable for installing the telescopic rod selected during testing; A cable fixing card (70) is used for fixing the cable.

2. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1 is characterized in that: The plate-type body (10) has folded edges (11) on both sides in the width direction, facing away from the fixing rod (20). The folded edges (11) are formed by bending both sides of the plate-type body (10) toward the side facing away from the fixing rod (20).

3. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1 is characterized in that: A scale line (14) is formed on one side surface of the plate-type body (10) in the thickness direction, and the scale line (14) extends along the length direction of the plate-type body (10). The scale line (14) is used to indicate the relative position of the fixing rod (20) and the plate-type body (10) in the length direction of the plate-type body (10).

4. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1 is characterized in that: Any one of the fixing rods (20) extends along the width direction of the plate-type body (10), and its position along the length direction of the plate-type body (10) is adjustable.

5. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 4 is characterized in that: The plate-type body (10) is provided with a mounting groove penetrating the plate-type body (10) along the thickness direction of the plate-type body (10), the mounting groove extending along the length direction of the plate-type body (10) into a strip-shaped groove (12), the fixing rod (20) is provided with a mounting hole (13), and the fixing rod (20) is fastened to the plate-type body (10) by passing through the strip-shaped groove (12) and the mounting hole (13) via the fastener (21).

6. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 5, characterized in that: There are two strip grooves (12), which are spaced apart along the width direction of the plate-type body (10). Each strip groove (12) is suitable for assembling a plurality of fixing rods (20) with the plate-type body (10) using the fastener (21).

7. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 4 is characterized in that: The two roller mounting beams (51) extend along the width direction of the plate-type body (10) and are arranged between two adjacent fixing rods (20).

8. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1, characterized in that: The outer periphery of the roller (52) is covered with a rubber material.

9. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1, characterized in that: The plate-type main body (10) is provided with a through hole (15) which passes through the plate-type main body (10) in the thickness direction of the plate-type main body (10). The mounting interface component (60) of the telescopic rod further comprises: a bolt (62), a nut (63), a sphere (64) and a spherical shell (65). The bolt (62) is adapted to pass through the through hole (15) and cooperate with the nut (63) so as to fix the mounting interface component (60) of the telescopic rod to the plate-type main body (10); the sphere (64) is threadedly connected to one end of the bolt (62) away from the plate-type main body (10); the spherical shell (65) is rotatably sleeved on the radially outer side of the sphere (64), and the connecting end (61) is fixedly connected to the spherical shell (65).

10. The auxiliary device (100) for multi-channel electromagnetic detection of boiler water-cooled walls according to claim 1, characterized in that: An accommodating cavity is formed inside the connecting end (61), and the cable is suitable for being arranged in the accommodating cavity.

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