Boiler tube sheet deformation detection device and boiler tube sheet deformation detection method

Abstract

The present invention provides a boiler tube sheet deformation detection device and a boiler tube sheet deformation detection method. Among them, the boiler tube sheet deformation detection device includes: a housing including a detection surface; a height adjustment device for adjusting the distance between the detection surface and the boiler tube sheet; a first height detection device for detecting the distance h1 between the maximum deformation position of the boiler tube sheet and the detection surface; a second height detection device for detecting the distance h2 between the undeformed position of the boiler tube sheet and the detection surface; a control device including an input module, an output module and a calculation module. The input module is used to input the diameter d of the boiler tube sheet. The calculation module is used to judge the magnitude relationship between the absolute value A of h2 - h1 and a preset condition. The output module is used to output the judgment result. Applying the technical solution of the present invention can effectively solve the problems in the prior art that when the boiler tube sheet is deformed and the deformation amount is detected, the detection efficiency is low and the detection accuracy is low.

Description

Technical Field

[0001] The present invention relates to the field of special equipment detection, and more specifically, to a boiler tube sheet deformation detection device and a boiler tube sheet deformation detection method. Background Art

[0002] According to the "Special Equipment Safety Law of the People's Republic of China" and the "Special Equipment Catalog" promulgated and implemented in 2014, boilers belong to the first category of special equipment and should be subject to regular inspections. When special equipment inspectors conduct regular inspections on boilers, the current legal norms are the "Boiler Safety Technical Code" TSG 11-2020, and the national standard is "Regular Inspection of Boilers" GB / T42535-2023.

[0003] According to the provisions of Article 9.5.2, "Regular Inspection Cycle" of the "Boiler Safety Technical Code" TSG 11-2020, industrial boilers generally need to be internally inspected once every two years. According to the requirements of Article 9.5.8, "Internal Inspection Content of Boilers", when inspecting the tube sheet of a horizontal internal combustion industrial boiler, its deformation condition should be checked.

[0004] According to Appendix D, Article D.2, "Deformation" of the national standard "Regular Inspection of Boilers" GB / T42535-2023, "The deformation of the pressure-bearing element should be repaired (reset, patched, replaced)". "However, when the boiler tube sheet meets the conditions: b) The deformation height of the tube sheet does not exceed 1.5% of the tube sheet diameter and is not greater than 25 mm, it can be used and monitored intensively." When conducting an internal inspection of a horizontal internal combustion boiler, if deformation of the tube sheet is found, it is necessary to measure the deformation height of the tube sheet and determine whether the boiler can continue to be used or needs to be repaired based on this.

[0005] After retrieving relevant literature published at home and abroad, no measurement method for the deformation height of the tube sheet has been found. Summary of the Invention

[0006] The main objective of the present invention is to provide a boiler tube sheet deformation detection device and a boiler tube sheet deformation detection method to solve the problems of low detection efficiency and low detection accuracy when detecting the deformation amount when the boiler tube sheet is deformed in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a boiler tube plate deformation detection device is provided, comprising: a shell, comprising a detection surface; a height adjustment device, arranged on the shell to adjust the distance between the detection surface and the boiler tube plate; a first height detection device, arranged on the shell, to detect the distance h1 between the maximum deformation point of the boiler tube plate and the detection surface; a second height detection device, arranged on the shell, to detect the distance h2 between the undeformed point of the boiler tube plate and the detection surface; a control device, arranged on the shell, the control device comprising an input module, an output module and a calculation module, the first height detection device and the second height detection device are both electrically connected to the control device, the input module is used to input the diameter d of the boiler tube plate, the calculation module is used to judge the size between the absolute value A of h2-h1 and a preset condition, wherein the preset conditions are at least two, one of which is a times the diameter d, and the other is b, wherein a and b are preset values, and the output module is used to output the judgment result.

[0008] In one embodiment, the first height detection device includes a plurality of probes evenly arranged in a plane, the probes are used to detect the distance h1' between the boiler tube plate and the position corresponding to the probe and the detection surface, the absolute value A' of h2-h1' is multiple, and the calculation module uses the maximum value of the multiple absolute values A' as the absolute value A.

[0009] In one embodiment, the calculation module obtains the deformation boundary L of the boiler tube plate based on the data that the absolute value A' is not 0, the first height detection device is a laser detector, the probe is a laser detection light, and the control device also includes a control module, which controls the state of some laser detection lights to be inconsistent with the state of other laser detection lights, wherein some laser detection lights are laser lights corresponding to the deformation boundary L.

[0010] In one embodiment, the first height detection device is a detachable laser detector, the probe is a laser detection light, the control device also includes a control module, the calculation module obtains the deformation boundary L of the boiler tube plate according to the data whose absolute value A' is not 0, and the boiler tube plate deformation detection device also includes: a marking device, which is arranged on the shell and is located on the side of the laser detector away from the height adjustment device, the marking device includes a first moving device having a first walking end that can move freely in a plane and a marking head arranged at the first walking end, the marking device is electrically connected to the control device, the control device controls the first walking end to move along the deformation boundary L, and controls the marking head to mark the position of the boiler tube plate corresponding to the deformation boundary L.

[0011] In one embodiment, the first height detection device is a laser detector that is detachably arranged, and the probe is a laser detection lamp. The control device further includes a control module. The calculation module obtains the deformation boundary L of the boiler tube sheet based on the data where the absolute value A' is not zero. The calculation module is also used to judge the magnitude relationship between the ratio of the width to the absolute value A and a first preset value. The width is the shortest distance between the maximum deformation point of the boiler tube sheet and the deformation boundary L. The boiler tube sheet deformation detection device further includes: a thickness measurement device, which is arranged on the housing and on the side of the laser detector away from the height adjustment device. The thickness measurement device includes a second moving device having a second moving end that can move freely in a plane and a thickness measurement head arranged at the second moving end. The thickness measurement device is electrically connected to the control device. The control module controls the second moving end to move to a position opposite to the maximum deformation point of the boiler tube sheet and controls the thickness measurement head to measure the thickness of the maximum deformation point of the boiler tube sheet. The calculation module judges whether the thickness n of the maximum deformation point of the boiler tube sheet is greater than a second preset value.

[0012] In one embodiment, the second height detection device includes a plurality of laser detection antennas arranged at intervals along the circumferential direction of the housing. The laser detection antennas are used to detect the distance between the undeformed part of the boiler tube sheet and the detection surface. The laser detection antennas are movably arranged on the housing. The laser detection antennas have a detection position extending out of the housing and a retracted position retracted into the housing. The housing is also provided with a plurality of control switches for controlling the operation of each laser detection antenna. The control switches are electrically connected to the control device.

[0013] In one embodiment, the height adjustment device includes a plurality of telescopic components. Each telescopic component includes a fixed rod, a telescopic rod, and a driving device for driving the telescopic rod to move. The second height detection device includes a plurality of laser detection antennas arranged at intervals along the circumferential direction of the housing. The laser detection antennas are used to detect the distance between the undeformed part of the boiler tube sheet and the detection surface. The control device includes a control module. The driving device and the second height detection device are electrically connected to the control device. The control device adjusts the extension distance of the telescopic rods of each telescopic component according to the distances detected by each laser detection antenna until the distances detected by at least 3 laser detection antennas in the second height detection device are equal. The equal distances detected by the plurality of laser detection antennas are used as the distance h2.

[0014] According to another aspect of the present invention, a method for detecting the deformation of a boiler tube sheet is provided, including: obtaining the diameter d of the boiler tube sheet, the distance h1 between the maximum deformation point of the boiler tube sheet and the detection surface of the boiler tube sheet deformation detection device, the distance h2 between the undeformed part of the boiler tube sheet and the detection surface, and the absolute value A of h2 - h1; judging the magnitude between the absolute value A and preset conditions, where there are at least two preset conditions. One preset condition is a times the diameter d, and the other preset condition is b, where a and b are preset values; outputting the judgment result.

[0015] In one embodiment, the method for obtaining the distance h1 between the maximum deformation position of the boiler tube sheet and the detection surface and the absolute value A of h2 - h1 includes: obtaining the distance h1' between each deformation position of the boiler tube sheet and the detection surface, taking the maximum value among the absolute values A' of multiple h2 - h1' as the absolute value A, and taking the distance h1' corresponding to the absolute value A as the distance h1.

[0016] In one embodiment, the distances h1' between multiple positions of the boiler tube sheet and the detection surface are obtained through the respective laser detection lights of a laser detector. The deformation boundary L of the boiler tube sheet is obtained based on the data where the absolute value A' is not 0. The output judgment results include: controlling the states of some laser detection lights to be inconsistent with the states of other laser detection lights, where some of the laser detection lights are the laser lights corresponding to the deformation boundary L; or, controlling the marking head of a marking device to move along the deformation boundary L and controlling the marking head to mark the positions of the boiler tube sheet corresponding to the deformation boundary L.

[0017] In one embodiment, before outputting the judgment result, the boiler tube sheet deformation detection method further includes: obtaining the deformation boundary L of the boiler tube sheet based on multiple data where the absolute value A' is not 0; judging the magnitude relationship between the ratio of the width to the absolute value A and a first preset value, where the width is the shortest value of the distance between the maximum deformation position of the boiler tube sheet and the deformation boundary L; if there is a case where the magnitude relationship is less than or equal to, then obtaining the thickness n of the maximum deformation position of the boiler tube sheet through a thickness measuring device; and judging whether the thickness n is greater than a second preset value.

[0018] In one embodiment, the method for obtaining the distance h2 between the undeformed position of the boiler tube sheet and the detection surface includes: detecting the distance between the undeformed position of the boiler tube sheet and the detection surface through multiple laser detection tentacles, adjusting the attitude of the detection surface of the boiler tube sheet deformation detection device according to the obtained distance, and taking the equal distances detected by multiple laser detection tentacles as the distance h2 when the distances detected by at least 3 laser detection tentacles are equal.

[0019] Applying the technical solution of the present invention, the detection personnel first fix the boiler tube sheet deformation detection device at the position of the deformation area of the boiler tube sheet, and then input the diameter d of the boiler tube sheet. The boiler tube sheet deformation detection device can automatically compare its measurement results with preset conditions and output judgment results. The above - mentioned boiler tube sheet deformation detection device has the following advantages: First, it is simple to operate, and the detection personnel can intuitively obtain the detection results, with a high degree of automation; Second, the measurement method is accurate and scientific, that is, the detection accuracy is high.

[0020] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 FIG. shows a front view schematic diagram of the first embodiment of the boiler tube sheet deformation detection device according to the present invention;

[0023] Figure 2 shows Figure 1 a bottom view schematic diagram of the boiler tube sheet deformation detection device, wherein the laser detection antenna of the second height detection device is in the retracted position;

[0024] Figure 3 shows Figure 1 a top view schematic diagram of the boiler tube sheet deformation detection device;

[0025] Figure 4 FIG. shows a three-dimensional structural schematic diagram of the first moving device of the second embodiment of the boiler tube sheet deformation detection device according to the present invention;

[0026] Figure 5 FIG. shows a three-dimensional structural schematic diagram of the first moving device of the third embodiment of the boiler tube sheet deformation detection device according to the present invention;

[0027] Figure 6 FIG. shows a three-dimensional structural schematic diagram of the second moving device of the fourth embodiment of the boiler tube sheet deformation detection device according to the present invention;

[0028] Figure 7 FIG. shows a three-dimensional structural schematic diagram of the second moving device of the fifth embodiment of the boiler tube sheet deformation detection device according to the present invention.

[0029] Wherein, the above-mentioned drawings include the following reference numerals:

[0030] 1. Boiler tube sheet; 2. Installation cavity; 10. Housing; 11. Detection surface; 12. Control switch; 20. Height adjustment device; 21. Telescopic assembly; 30. First height detection device; 31. Probe; 40. First moving device; 41. First walking end; 42. First cylinder; 43. First guide rod; 431. First chute; 44. First screw; 45. First nut; 46. First guide frame; 47. First sliding frame; 48. First gear; 50. Second moving device; 51. Second walking end; 52. Second cylinder; 53. Second guide rod; 531. Second chute; 54. Second screw; 55. Second nut; 56. Second guide frame; 57. Second sliding frame; 58. Second gear; 60. Second height detection device; 61. Laser detection antenna; 62. Telescopic member; 70. Printer; 80. Touch display screen. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances for the embodiments of the present invention described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0035] As shown Figures 1 to 3 in the figure, the boiler tube sheet deformation detection device of the first embodiment includes: a housing 10, a height adjustment device 20, a first height detection device 30, a second height detection device 60, and a control device. Among them, the housing 10 includes a detection surface 11; the height adjustment device 20 is arranged on the housing 10 to adjust the distance between the detection surface 11 and the boiler tube sheet 1; the first height detection device 30 is arranged on the housing 10 to detect the distance h1 between the maximum deformation point of the boiler tube sheet 1 and the detection surface 11; the second height detection device 60 is arranged on the housing 10 to detect the distance h2 between the undeformed part of the boiler tube sheet 1 and the detection surface 11; the control device is arranged on the housing 10, and the control device includes an input module, an output module, and a calculation module. Both the first height detection device 30 and the second height detection device 60 are electrically connected to the control device. The input module is used to input the diameter d of the boiler tube sheet 1, and the calculation module is used to judge the magnitude relationship between the absolute value A of h2 - h1 and the preset conditions. There are at least two preset conditions, one of the preset conditions is a times the diameter d, and the other preset condition is b, where a and b are preset values. The output module is used to output the judgment result.

[0036] Applying the technical solution of the first embodiment, the detection personnel first fix the boiler tube sheet deformation detection device at the position of the deformation area of the boiler tube sheet 1, and then input the diameter d of the boiler tube sheet. The boiler tube sheet deformation detection device can automatically compare its measurement results with the preset conditions and output the judgment result. The above-mentioned boiler tube sheet deformation detection device has the following advantages: First, it is easy to operate, and the detection personnel can intuitively obtain the detection results, with a high degree of automation; Second, the measurement method is accurate and scientific, that is, the detection accuracy is high.

[0037] It should be noted that the judgment result output by the output module can be the magnitude relationship itself or an operation suggestion. Specifically, the display screen serves as the output module. When the absolute value A is simultaneously less than a times the diameter d and b, the display screen can display the label of "monitoring operation". When the absolute value A is greater than or equal to any one of a times the diameter d and b, the display screen can display the label of "repair". Or, the output module includes a buzzer. When the absolute value A is simultaneously less than a times the diameter d and b, the buzzer emits a short sound. When the absolute value A is greater than or equal to any one of a times the diameter d and b, the buzzer emits a long sound. Or the output module includes a warning light. When the absolute value A is simultaneously less than a times the diameter d and b, the warning light is always on. When the absolute value A is greater than or equal to any one of a times the diameter d and b, the warning light flashes. Preferably, in this embodiment, the display screen is a touch display screen 80, and the touch display screen 80 serves as both the input module and the output module.

[0038] It should be noted that in this embodiment, a is 1.5% and b is 25 mm. The values of a and b are set according to national standards.

[0039] Preferably, as Figure 3 shown, in this embodiment, a printer 70 is further provided on the housing 10. The printer 70 can print out a measurement report.

[0040] As Figure 1 and Figure 2 shown, in the first embodiment, the first height detection device 30 includes a plurality of probes 31 uniformly arranged in a plane. The probes 31 are used to detect the distance h1' between the position of the boiler tube sheet 1 corresponding to the probe 31 and the detection surface 11. There are multiple absolute values A' of |h2 - h1'|. The calculation module takes the maximum value among the multiple absolute values A' as the absolute value A. Specifically, the plurality of probes 31 can simultaneously obtain the distance h1', so that the absolute value A can be obtained more quickly (basically within 2 seconds). Therefore, the detection efficiency is improved. Of course, in other embodiments not shown in the figure, a driving structure can also be used to drive the first height detection device to move in the plane, and the absolute value A is calculated by obtaining the distance h1' multiple times.

[0041] It should be noted that in this embodiment, when the boiler tube sheet bulges and deforms, h2 - h1' is positive. When the boiler tube sheet sinks and deforms, h2 - h1' is negative. The absolute value of |h2 - h1'| represents the deformation height.

[0042] As Figure 2 shown, in the first embodiment, the calculation module obtains the deformation boundary L of the boiler tube sheet 1 based on the data where the absolute value A' is not 0. The first height detection device 30 is a laser detector, and the probe 31 is a laser detection lamp. The control device further includes a control module. The control module controls the states of some laser detection lamps to be inconsistent with the states of other laser detection lamps. Among them, some laser detection lamps are the laser lamps corresponding to the deformation boundary L. Specifically, in this embodiment, the boiler tube sheet deformation detection device can detect the deformation boundary L of the boiler tube sheet 1, and then display the boundary through the laser lamp, which is convenient for the detection personnel to manually mark, so as to facilitate the subsequent repair of the boiler tube sheet (the repair of the boiler tube sheet is generally to cut the deformed part and then fill in a new flat plate). It should be noted that the deformation boundary L can be displayed in the following two forms: First, the laser lamp corresponding to the deformation boundary L is lit and other laser lamps are extinguished; Second, the laser lamp corresponding to the deformation boundary L is extinguished and other laser lamps are lit.

[0043] It should also be noted that in the first embodiment, the deformed boundary L can be obtained through the following method: The laser detector is divided into an upper left area, a lower left area, an upper right area, and a lower right area. The edges of each area are respectively determined, and the edges of each area are combined to form a complete deformed boundary L. The method for obtaining the edge of a single area is similar. Taking the upper left area as an example, the description is as follows: Obtain all the laser lamps corresponding to non-zero absolute values A' within the upper left area, and determine whether there are laser lamps corresponding to absolute values A' of 0 on the left side and / or the upper side of each laser lamp. If there is a laser lamp corresponding to an absolute value A' of 0 on either the left side or the upper side of the laser lamp, then this laser lamp is marked as 1. Obtain all the laser lamps marked as "1", and the line formed by these laser lamps is the edge of a single area.

[0044] When the deformed part of the boiler tube sheet 1 is relatively close to the edge, if the second height detection device 60 is set at a fixed position, the distance between the undeformed part and the detection surface may not be detected. To solve the above problem, as Figures 1 to 3 shown, in the first embodiment, the second height detection device 60 includes a plurality of laser detection antennas 61 arranged at intervals in the circumferential direction of the housing 10. The laser detection antennas 61 are used to detect the distance between the undeformed part of the boiler tube sheet 1 and the detection surface 11. The laser detection antennas 61 are movably arranged on the housing 10. The laser detection antennas 61 have a detection position extending outward from the housing 10 and a retracted position retracted into the housing 10. A plurality of control switches 12 for controlling the operation of each laser detection antenna 61 are also arranged on the housing 10, and the control switches 12 are electrically connected to the control device. Since the second height detection device 60 includes a plurality of laser detection antennas 61 arranged at intervals in the circumferential direction, appropriate laser detection antennas 61 can be selected according to the actual situation to ensure that at least one laser detection antenna 61 can obtain the distance between the undeformed part of the boiler tube sheet 1 and the detection surface 11. Preferably, in this embodiment, the laser detection antenna 61 is telescopically arranged on the housing 10 through a telescopic member 62.

[0045] If the deformed area of the boiler tube sheet is relatively large, then the height adjustment device 20 may be fixed at the deformed protrusion of the boiler tube sheet, resulting in the detection surface 11 not being parallel to the undeformed part of the boiler tube sheet 1, thereby making the obtained data of h2 inaccurate. To solve the above problem, as Figure 1 and Figure 2As shown, in the first embodiment, the height adjustment device 20 includes a plurality of telescopic components 21. Each telescopic component 21 includes a fixed rod, a telescopic rod, and a driving device for driving the telescopic rod to move. The second height detection device 60 includes a plurality of laser detection antennas 61 arranged at intervals along the circumferential direction of the housing 10. The laser detection antennas 61 are used to detect the distance between the undeformed part of the boiler tube sheet 1 and the detection surface 11. The control device includes a control module. The driving device and the second height detection device 60 are electrically connected to the control device. The control device adjusts the extension distance of the telescopic rods of the telescopic components 21 according to the distances detected by the laser detection antennas 61 until the distances detected by at least 3 laser detection antennas 61 in the second height detection device 60 are equal. The equal distances detected by the plurality of laser detection antennas 61 are used as the distance h2. In the above structure, the extension lengths of the telescopic components 21 can be adjusted individually. When the distances detected by a plurality of (at least 3, preferably more than 5) laser detection antennas 61 are equal, it proves that the detection surface 11 is parallel to the undeformed part of the boiler tube sheet 1, thus making the final measurement result accurate.

[0046] Preferably, in the first embodiment, the metal integrated housing 10 is made of 304 stainless steel, with an overall thickness of 20 mm and a diameter of 300 mm. A laser detector with a diameter of 200 mm is installed at the center of the bottom for finding the maximum deformation point of the deformed part of the tube sheet; three telescopic components 21 are evenly arranged within a 50-mm ring at the bottom periphery for fixing the measuring device on the tube sheet of the boiler; seven laser detection antennas are evenly arranged on the side surface of the metal integrated housing for measuring the distance from the undeformed part of the tube sheet to the bottom of the device; a touch display screen is provided on the front of the housing 10 for inputting the information required during measurement, and the measurement result can be displayed in Chinese and English when the measurement is completed. A micro printer is also provided on the front of the metal integrated housing for printing the measurement report.

[0047] The laser detector consists of 100 laser detection lamps with a diameter of 0.5 mm. After the device is fixed on the tube sheet of the boiler, the switch of the laser detector is turned on, and the 100 laser detection lamps quickly scan the deformed part within 2 seconds to find the maximum deformation point of the tube sheet. The built-in calculation software records and displays the distance from the maximum deformation point to the bottom of the metal integrated housing on the touch display screen.

[0048] Preferably, in the first embodiment, a suction cup or a magnetic attraction device is provided at the bottom of the height adjustment device 20 to fix the boiler tube plate deformation detection device on the boiler tube plate. When the measured tube plate is a ferromagnetic metal material, a magnetic foot plate with a diameter of 10 mm and a thickness of 5 mm can be selected; when the measured tube plate is a non-magnetic metal material, a plastic suction cup with a diameter of 50 mm can be selected. The heights of the three telescopic components 21 can be individually adjusted by using a micro motor after selecting the number of any fixed foot on the touch display screen and inputting the corresponding value, ensuring that the measured values obtained by at least five laser detection antennas for measuring the undeformed tube plate are the same.

[0049] Preferably, in the first embodiment, when not in use, the seven laser detection antennas are housed in a metal integrated housing to protect the laser detection antennas from being bumped. Each detection antenna is equipped with a laser detection lamp with a diameter of 1 mm, and each detection antenna has a separate control switch. The number of detection antennas to be turned on can be selected according to the specific on-site situation during measurement. The distance that each detection antenna extends beyond the outer edge of the housing can be controlled through the touch screen.

[0050] The difference between the boiler tube plate deformation detection device of the second embodiment and that of the first embodiment lies only in that the boiler tube plate deformation detection device further includes a marking device, as Figure 1 , Figure 2 and Figure 4 shown. In the second embodiment, the first height detection device 30 is a detachable laser detector, the probe 31 is a laser detection lamp, and the control device further includes a control module. The calculation module obtains the deformation boundary L of the boiler tube plate 1 based on the data with the absolute value A' not equal to 0. The boiler tube plate deformation detection device further includes: a marking device, which is arranged on the housing 10 and on the side of the laser detector away from the height adjustment device 20. The marking device includes a first moving device 40 having a first walking end 41 that can move freely in a plane and a marking head arranged at the first walking end 41. The marking device is electrically connected to the control device. The control device controls the first walking end 41 to walk along the deformation boundary L and controls the marking head to mark the position of the boiler tube plate 1 corresponding to the deformation boundary L. Specifically, in this embodiment, the boiler tube plate deformation detection device can detect the deformation boundary L of the boiler tube plate 1 and then directly mark the boundary through the marking head, reducing the manual marking steps of the detection personnel. On the one hand, it reduces the labor intensity of the detection personnel, and on the other hand, the marking is more accurate, facilitating the subsequent repair of the boiler tube plate.

[0051] Preferably, as Figure 4As shown, in the second embodiment, the first moving device 40 includes two first cylinders 42 arranged vertically. The piston rod of the vertically arranged first cylinder 42 is fixedly connected to the horizontally arranged first guide rod 43 to drive the first guide rod 43 to move vertically. A horizontal first chute 431 is provided on the horizontally arranged first guide rod 43. The piston rod of the horizontally arranged first cylinder 42 is fixedly connected to the vertically arranged first guide rod 43 to drive the first guide rod 43 to move horizontally. A vertical first chute 431 is provided on the vertically arranged first guide rod 43. The first walking end 41 is pivotally inserted into the horizontal first chute 431 and the vertical first chute 431. The above structure is simple, enabling the first walking end 41 to walk to any point within the plane.

[0052] The difference between the boiler tube sheet deformation detection device of the third embodiment and that of the second embodiment lies only in the specific structure of the first moving device 40, as Figure 5 As shown, in the third embodiment, the first moving device 40 includes: a first driving device, a second driving device, a first screw 44, a first nut 45, a first guide frame 46, a first carriage 47, and a first gear 48. Specifically, the extending direction of the first screw 44 is perpendicular to the extending direction of the first carriage 47. When it is necessary for the first walking end 41 to move along the extending direction of the first screw 44, the first driving device drives the first screw 44 to rotate. The first screw 44 drives the first nut 45 to move along its axial direction. The first nut 45 drives the first guide frame 46 and the first carriage 47 thereon to move, thereby realizing the movement of the first walking end 41 along the extending direction of the first screw 44. When it is necessary for the first walking end 41 to move in a direction perpendicular to the extending direction of the first screw 44, the second driving device drives the first gear 48 to rotate. The first gear 48 meshes with the first carriage 47 to drive the first carriage 47 to slide on the first guide frame 46. The above structure is simple, enabling the first walking end 41 to walk to any point within the plane.

[0053] The difference between the boiler tube sheet deformation detection device of the fourth embodiment and that of the first embodiment lies only in that the boiler tube sheet deformation detection device further includes a thickness measuring device. Specifically, if the deformation amount of the boiler tube sheet is large, even if it meets the above two preset conditions, the thickness of the deformed area of the boiler tube sheet will necessarily be much thinner. When the thickness of the boiler tube sheet is too thin and its strength cannot ensure the normal operation of the boiler, the boiler tube sheet also needs to be repaired. To make the deformation detection of the boiler tube sheet more comprehensive, as Figure 1 、 Figure 2 and Figure 6As shown, in the fourth embodiment, the first height detection device 30 is a laser detector that can be detachably installed, and the probe 31 is a laser detection lamp. The control device further includes a control module. The calculation module obtains the deformation boundary L of the boiler tube sheet 1 based on the data where the absolute value A' is not 0. The calculation module is also used to judge the magnitude relationship between the ratio of the width to the absolute value A and a first preset value. The width is the shortest distance between the maximum deformation point of the boiler tube sheet and the deformation boundary L. The boiler tube sheet deformation detection device further includes: a thickness measurement device. The thickness measurement device is arranged on the housing 10 and on the side of the laser detector away from the height adjustment device 20. The thickness measurement device includes a second moving device 50 having a second walking end 51 that can move freely in a plane and a thickness measurement head arranged at the second walking end 51. The thickness measurement device is electrically connected to the control device. The control module controls the second walking end 51 to move to a position opposite to the maximum deformation point of the boiler tube sheet 1 and controls the thickness measurement head to measure the thickness of the maximum deformation point of the boiler tube sheet 1. The calculation module judges whether the thickness n of the maximum deformation point of the boiler tube sheet 1 is greater than a second preset value (usually the "minimum required wall thickness" in the design document), and the output module is used to output the judgment result. The above-mentioned boiler tube sheet deformation detection device can measure whether the thickness at the highest point of a convexity with a large curvature meets the preset value, thereby making the boiler tube sheet deformation detection more comprehensive and the detection result more accurate.

[0054] Preferably, in this embodiment, the first preset value is 2. Of course, the first preset value can also be set to other values, and the specific value can be selected according to the actual situation.

[0055] Preferably, as Figure 6 shown, in the fourth embodiment, the second moving device 50 includes two second cylinders 52 arranged vertically. The cylinder rod of the vertically arranged second cylinder 52 is fixedly connected to the horizontally arranged second guide rod 53 to drive the second guide rod 53 to move vertically. A horizontal second chute 531 is arranged on the horizontally arranged second guide rod 53. The cylinder rod of the horizontally arranged second cylinder 52 is fixedly connected to the vertically arranged second guide rod 53 to drive the second guide rod 53 to move horizontally. A vertical second chute 531 is arranged on the vertically arranged second guide rod 53. The second walking end 51 is pivotally inserted into the horizontal second chute 531 and the vertical second chute 531. The above structure is simple, enabling the second walking end 51 to walk to any point in the plane.

[0056] The difference between the boiler tube sheet deformation detection device of the fifth embodiment and the boiler tube sheet deformation detection device of the fourth embodiment lies only in the specific structure of the second moving device 50, as Figure 7As shown in the figure, in the fifth embodiment, the second mobile device 50 includes: a first driving device, a second driving device, a second screw rod 54, a second nut 55, a second guide frame 56, a second carriage 57, and a second gear 58. Specifically, the extending direction of the second screw rod 54 is perpendicular to the extending direction of the second carriage 57. When it is necessary for the second walking end 51 to move along the extending direction of the second screw rod 54, the second driving device drives the second screw rod 54 to rotate. The second screw rod 54 drives the second nut 55 to move along its axial direction. The second nut 55 drives the second guide frame 56 and the second carriage 57 thereon to move, so as to realize the movement of the second walking end 51 along the extending direction of the second screw rod 54. When it is necessary for the second walking end 51 to move in a direction perpendicular to the extending direction of the second screw rod 54, the second driving device drives the second gear 58 to rotate. The second gear 58 meshes with the second carriage 57 to drive the second carriage 57 to slide on the second guide frame 56. The above structure is simple, enabling the second walking end 51 to move to any point within the plane.

[0057] The following specifically describes the detection process of the boiler tube sheet deformation detection device: After inputting the diameter of the boiler tube sheet, the boiler tube sheet deformation detection device can automatically measure the deformation height of the tube sheet, display the conclusion of "monitoring operation" or "repair", and also print out the measurement report. The boiler tube sheet deformation detection device includes a metal integrated housing, a touch display screen, a laser detector, a laser detection antenna, and a telescopic assembly. After inputting the diameter of the tube sheet to be measured at the touch display screen of the device, the device is fixed at the deformed part of the tube sheet through the telescopic assembly 21, making the housing parallel to the undeformed part of the tube sheet. The laser detector at the center will automatically scan, accurately find the maximum deformation point of the deformed part, and measure the distance from the maximum deformation point to the bottom of the housing of the device. After calculation by the internal calculation software of the device, the deformation amount of the measured tube sheet and the result of whether repair is needed are automatically displayed on the touch display screen. The method for measuring the deformation height of the tube sheet of the present invention is convenient to operate, has a high degree of automation, and the measurement method is accurate and scientific.

[0058] This application also provides a method for detecting the deformation of a boiler tube sheet. According to the embodiment of the method for detecting the deformation of a boiler tube sheet of this application, the method for detecting the deformation of a boiler tube sheet includes: obtaining the diameter d of the boiler tube sheet 1, the distance h1 between the maximum deformation part of the boiler tube sheet 1 and the detection surface 11 of the boiler tube sheet deformation detection device, the distance h2 between the undeformed part of the boiler tube sheet 1 and the detection surface 11, and the absolute value A of h2 - h1; judging the magnitude relationship between the absolute value A and the preset conditions, where there are at least two preset conditions, one of the preset conditions is a times the diameter d, and the other preset condition is b, where a and b are preset values; outputting the judgment result.

[0059] Applying the technical solution of Application Example 1, the inspector first fixes the boiler tube sheet deformation detection device at the position of the deformation area of the boiler tube sheet 1, and then inputs the diameter d of the boiler tube sheet. The boiler tube sheet deformation detection device can automatically compare its measurement results with the preset conditions and output a judgment result. The above-mentioned boiler tube sheet deformation detection device has the following advantages: First, it is easy to operate, and the inspector can intuitively obtain the detection result, with a high degree of automation; Second, the measurement method is accurate and scientific, that is, the detection accuracy is high.

[0060] In Example 1, the method for obtaining the distance h1 between the maximum deformation point of the boiler tube sheet 1 and the detection surface 11 and the absolute value A of h2 - h1 includes: obtaining the distance h1' between each deformation position of the boiler tube sheet 1 and the detection surface 11, taking the maximum value among the absolute values A' of multiple h2 - h1' as the absolute value A, and taking the distance h1' corresponding to this absolute value A as the distance h1. Specifically, multiple probes 31 can obtain the distance h1' simultaneously, so that the absolute value A can be obtained more quickly (basically within 2 seconds). Therefore, the detection method of this embodiment can improve the detection efficiency.

[0061] In Example 1, the distance h1' between multiple positions of the boiler tube sheet 1 and the detection surface 11 is obtained through the respective laser detection lights of the laser detector. The deformation boundary L of the boiler tube sheet 1 is obtained based on the data where the absolute value A' is not 0. The output judgment result includes: controlling the states of some laser detection lights to be inconsistent with the states of other laser detection lights, where some of the laser detection lights are the laser lights corresponding to the deformation boundary L. In this embodiment, the boiler tube sheet deformation detection method can detect the deformation boundary L of the boiler tube sheet 1, and then display this boundary through the laser lights, which is convenient for the inspector to manually mark, so as to facilitate the subsequent repair of the boiler tube sheet (the repair of the boiler tube sheet is generally to cut the deformed part and then fill in a new flat plate).

[0062] In Example 1, the method for obtaining the distance h2 between the undeformed part of the boiler tube sheet 1 and the detection surface 11 includes: detecting the distance between the undeformed part of the boiler tube sheet 1 and the detection surface 11 through multiple laser detection antennas, and adjusting the attitude of the detection surface 11 of the boiler tube sheet deformation detection device according to the above data. When the distances detected by at least 3 laser detection antennas are equal, the equal distance detected by the multiple laser detection antennas 61 is used as the distance h2. In the above method, by adjusting the multiple laser detection antennas to detect the distance between the undeformed part of the boiler tube sheet 1 and the detection surface 11, the detection surface 11 is made parallel to the undeformed part of the boiler tube sheet 1, so that the final measurement result is accurate.

[0063] The difference between the boiler tube sheet deformation detection method of the second embodiment and that of the first embodiment lies in the display mode of the deformation boundary L. Specifically, in the second embodiment, the boiler tube sheet deformation detection device controls the marking head of the marking device to move along the deformation boundary L, and controls the marking head to mark the position corresponding to the deformation boundary L of the boiler tube sheet 1. Specifically, in this embodiment, the boiler tube sheet deformation detection device can detect the deformation boundary L of the boiler tube sheet 1, and then directly mark the boundary through the marking head, reducing the manual marking steps of the detection personnel. On the one hand, it reduces the labor intensity of the detection personnel, and on the other hand, the marking is more accurate, facilitating the subsequent repair of the boiler tube sheet.

[0064] The difference between the boiler tube sheet deformation detection method of the third embodiment and that of the first embodiment is that this method can also detect whether the thickness at the position with the maximum deformation of the boiler tube sheet meets the requirements. Specifically, in the third embodiment, before outputting the judgment result, the boiler tube sheet deformation detection method further includes: obtaining the deformation boundary L of the boiler tube sheet 1 according to a plurality of data with non-zero absolute values A'; judging the magnitude relationship between the ratio of the width to the absolute value A and a first preset value, where the width is the shortest distance between the maximum deformation point of the boiler tube sheet and the deformation boundary L; if there is a case where the magnitude relationship is less than or equal to, then obtaining the thickness n of the maximum deformation point of the boiler tube sheet 1 through a thickness measuring device; judging whether the thickness n is greater than a second preset value. The above-mentioned boiler tube sheet deformation detection method can measure whether the thickness at the highest point of a convexity with a large curvature meets the preset value, making the boiler tube sheet deformation detection more comprehensive and the detection result more accurate.

[0065] Advantages and effects of the present invention: During the regular internal inspection of industrial boilers, it is necessary to conduct a macroscopic inspection of the deformation of the pressure-bearing components. When deformation is found in the tube sheet during the macroscopic inspection, the deformation height of the tube sheet must be measured. However, currently, there is no scientific measurement method for measuring the deformation height of the boiler tube sheet. The device and measurement method provided by the present invention have a high degree of automation, simple and convenient operation methods, high measurement reliability and executability. It can not only quickly measure the deformation height value of the tube sheet, but also store measurement data and print reports, with traceability. Boiler manufacturing and use and maintenance units will also benefit greatly when measurement is required.

[0066] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0067] For ease of description, spatial relative terms such as "above", "on top of", "on the upper surface", "over" and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made.

[0068] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0069] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A boiler tube plate deformation detection device, characterized in that, include: The housing (10) comprises a detection surface (11); A height adjustment device (20) is arranged on the housing (10) and is used to adjust the distance between the detection surface (11) and the boiler tube plate (1); A first height detection device (30) is arranged on the housing (10) and is used to detect a distance h1 between a maximum deformation point of the boiler tube plate (1) and the detection surface (11); a second height detection device (60) disposed on the housing (10) and used to detect a distance h2 between an undeformed portion of the boiler tube plate (1) and the detection surface (11); A control device is arranged on the housing (10), the control device comprises an input module, an output module and a calculation module, the first height detection device (30) and the second height detection device (60) are both electrically connected to the control device, the input module is used to input the diameter d of the boiler tube plate (1), the calculation module is used to judge the size between the absolute value A of h2-h1 and a preset condition, wherein the preset conditions are at least two, one of which is a times the diameter d, and the other is b, wherein a and b are preset values, the output module is used to output the judgment result, the first height detection device (30) comprises a plurality of probes (31) evenly arranged in a plane, the probes (31) 1) used to detect the distance h1' between the position of the boiler tube plate (1) corresponding to the probe (31) and the detection surface (11), the absolute value A' of h2-h1' is multiple, the calculation module uses the maximum value of the multiple absolute values A' as the absolute value A, the calculation module obtains the deformation boundary L of the boiler tube plate (1) according to the data that the absolute value A' is not 0, the first height detection device (30) is a laser detector, the probe (31) is a laser detection light, and the control device also includes a control module, the control module controls the state of some laser detection lights to be inconsistent with the state of other laser detection lights, wherein the part of the laser detection lights are laser lights corresponding to the deformation boundary L.

2. The boiler tube sheet deformation detection device according to claim 1, wherein, The first height detection device (30) is a detachable laser detector, the probe (31) is a laser detection lamp, the control device further comprises a control module, the calculation module obtains the deformation boundary L of the boiler tube plate (1) according to the data whose absolute value A' is not 0, and the boiler tube plate deformation detection device further comprises: A marking device is arranged on the housing (10) and is located on a side of the laser detector away from the height adjustment device (20), the marking device comprising a first moving device (40) having a first walking end (41) that can move freely in a plane and a marking head arranged at the first walking end (41), the marking device is electrically connected to the control device, the control device controls the first walking end (41) to move along the deformation boundary L, and controls the marking head to mark a position of the boiler tube plate (1) corresponding to the deformation boundary L.

3. The boiler tube sheet deformation detection device according to claim 1, characterized in that, The first height detection device (30) is a detachable laser detector, the probe (31) is a laser detection lamp, the control device further comprises a control module, the calculation module obtains the deformation boundary L of the boiler tube plate (1) according to the data whose absolute value A' is not 0, the calculation module is further used to determine the relationship between the ratio of the width to the absolute value A and a first preset value, the width being the value at which the distance between the maximum deformation of the boiler tube plate (1) and the deformation boundary L is the shortest, and the boiler tube plate deformation detection device further comprises: A thickness measuring device is arranged on the housing (10) and is located on a side of the laser detector away from the height adjustment device (20), the thickness measuring device comprising a second moving device (50) having a second moving end (51) that moves freely in a plane and a thickness measuring head arranged at the second moving end (51), the thickness measuring device is electrically connected to the control device, the control module controls the second moving end (51) to move to a position opposite to the maximum deformation of the boiler tube plate (1), and controls the thickness measuring head to measure the thickness of the maximum deformation of the boiler tube plate (1), and the calculation module determines whether the thickness n of the maximum deformation of the boiler tube plate (1) is greater than a second preset value.

4. The boiler tube sheet deformation detection device according to claim 1, characterized in that, The second height detection device (60) comprises a plurality of laser detection feelers (61) arranged at intervals along the circumferential direction of the shell (10), the laser detection feelers (61) being used to detect the distance between the undeformed portion of the boiler tube sheet (1) and the detection surface (11), the laser detection feelers (61) being movably arranged on the shell (10), the laser detection feelers (61) having a detection position extending outward from the shell (10) and a recovery position recovered in the shell (10), the shell (10) also being provided with a plurality of control switches (12) for controlling the operation of each of the laser detection feelers (61), the control switches (12) being electrically connected to the control device.

5. The boiler tube sheet deformation detection device according to claim 1, characterized in that The height adjustment device (20) comprises a plurality of telescopic assemblies (21), each of the telescopic assemblies (21) comprising a fixed rod, a telescopic rod and a driving device for driving the telescopic rod to move; the second height detection device (60) comprises a plurality of laser detection feelers (61) arranged at intervals along the circumferential direction of the shell (10); the laser detection feelers (61) are used to detect the distance between the undeformed portion of the boiler tube plate (1) and the detection surface (11); the control device comprises a control module; the driving device and the second height detection device (60) are electrically connected to the control device; the control device adjusts the extension distance of the telescopic rod of each telescopic assembly (21) according to the distance detected by each laser detection feeler (61) until the distances detected by at least three of the laser detection feelers (61) in the second height detection device (60) are equal; the equal distances detected by the plurality of laser detection feelers (61) are used as the distance h2.

6. A method for detecting the deformation of a boiler tube sheet, characterized in that, include: Obtain the diameter d of the boiler tube sheet (1), the distance h1 between the maximum deformation position of the boiler tube sheet (1) and the detection surface (11) of the boiler tube sheet deformation detection device, the distance h2 between the undeformed position of the boiler tube sheet (1) and the detection surface (11), and the absolute value A of h2 - h1. Among them, the method for obtaining the distance h1 between the maximum deformation position of the boiler tube sheet (1) and the detection surface (11) and the absolute value A of h2 - h1 includes: obtaining the distance h1' between each deformation position of the boiler tube sheet (1) and the detection surface (11), and taking the maximum value among the absolute values A' of multiple h2 - h1' as the absolute value A, and taking the distance h1' corresponding to this absolute value A as the distance h1; Judge the size relationship between the absolute value A and preset conditions, where there are at least two preset conditions. One of the preset conditions is a times the diameter d, and the other preset condition is b, where a and b are preset values; Output the judgment result. Among them, the distances h1' between multiple positions of the boiler tube sheet (1) and the detection surface (11) are obtained through each laser detection lamp of the laser detector. The deformation boundary L of the boiler tube sheet (1) is obtained based on the data where the absolute value A' is not 0. The output judgment result includes: controlling the state of some laser detection lamps to be inconsistent with the state of other laser detection lamps, where the some laser detection lamps are the laser lamps corresponding to the deformation boundary L; or, controlling the marking head of the marking device to move along the deformation boundary L and controlling the marking head to mark the position of the boiler tube sheet (1) corresponding to the deformation boundary L.

7. The boiler tube sheet deformation detection method according to claim 6, characterized in that Before outputting the judgment result, the boiler tube sheet deformation detection method further includes: Obtain the deformation boundary L of the boiler tube sheet (1) based on the data where multiple absolute values A' are not 0; Judge the size relationship between the ratio of the width to the absolute value A and the first preset value, where the width is the shortest value of the distance between the maximum deformation position of the boiler tube sheet (1) and the deformation boundary L; If there is a situation where the size relationship is less than or equal to, obtain the thickness n of the maximum deformation position of the boiler tube sheet (1) through a thickness measuring device; Judge whether the thickness n is greater than the second preset value.

8. The boiler tube sheet deformation detection method according to claim 6, characterized in that, The method for obtaining the distance h2 between the undeformed position of the boiler tube sheet (1) and the detection surface (11) includes: detecting the distance between the undeformed position of the boiler tube sheet (1) and the detection surface (11) through multiple laser detection antennas (61), adjusting the attitude of the detection surface (11) of the boiler tube sheet deformation detection device according to the obtained distance. When the distances detected by at least 3 laser detection antennas (61) are equal, the equal distances detected by the multiple laser detection antennas (61) are used as the distance h2.

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