Device for measuring deformation of a boiler component, measuring method and control device

Abstract

The present application relates to the technical field of boiler detection, and discloses a kind of measuring device, measuring method and control device of boiler component deformation, the measuring device of boiler component deformation includes: connecting rod, target, measuring piece and control device, one end of connecting rod is used to connect the outer wall surface of boiler component, connecting rod extends towards the direction away from outer wall surface, target is located at the other end of connecting rod, target is provided with calibration point, when boiler component is in initial state, calibration point is located at initial point, when boiler component is in expansion state, calibration point is located at expansion point, measuring piece is spaced apart from target, measuring piece is used to obtain initial information of initial point, and obtains expansion information of expansion point, control device is used to determine the deformation of boiler component according to initial information and expansion information.The change of control device is determined by marking point information The deformation of boiler component enables staff to monitor the expansion state of boiler component.

Description

Technical Field

[0001] This application relates to the field of boiler testing technology, and in particular to a measuring device, measuring method and control device for measuring the deformation of boiler components. Background Technology

[0002] Under severe operating conditions such as deep peak shaving and start-up / shutdown peak shaving, thermal power generation systems are increasingly exhibiting abnormal stress problems caused by the abnormal expansion of metal components. In particular, boiler water-cooled wall tubes and headers, affected by frequent fluctuations in unit peak shaving and heat load, often experience expansion leading to cracking of header tube seat fillet welds and fin tearing, seriously threatening the safe and stable operation of the unit. Therefore, how to monitor the expansion of critical metal components has become an urgent problem to be solved. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] The first aspect of this application proposes a device for measuring the deformation of a boiler component. This device includes a connecting rod, a target, a measuring element, and a control device. One end of the connecting rod is connected to the outer wall of the boiler component, and the connecting rod extends in a direction away from the outer wall. The target is located at the other end of the connecting rod and has a calibration point. When the boiler component is in its initial state, the calibration point is located at the initial point; when the boiler component is in an expanded state, the calibration point is located at the expanded point. The measuring element is spaced apart from the target. The measuring element is used to acquire initial information about the initial point and expansion information about the expanded point. The control device is used to determine the deformation of the boiler component based on the initial information and the expansion information.

[0005] In some technical solutions provided in this application, the measuring device further includes: a pointer, a telescopic member, and a dial. The pointer is mounted on a connecting rod, and the telescopic member is slidably connected to the bottom of the pointer. The telescopic member can extend and retract relative to the pointer along the height direction. The telescopic member is used to indicate the displacement of the pointer along a first direction. The dial is perpendicular to the pointer, and the bottom end of the telescopic member abuts against the dial. The dial is used to indicate the displacement of the pointer along a second direction and a third direction. The first direction, the second direction, and the third direction are mutually perpendicular.

[0006] The second aspect of the technical scheme of the present application provides a device for measuring deformation of a boiler component. The device comprises a measuring element, a first distance measuring device, a second distance measuring device, a third angle measuring device, and a fourth angle measuring device. The first distance measuring device is configured to measure a first distance L1 between the measuring element and an initial point. The second distance measuring device is configured to measure a second distance L2 between the measuring element and an expansion point. The third angle measuring device is configured to determine a third angle α3 between the first distance and the second distance. The fourth angle measuring device is configured to determine a fourth angle β between the second distance and a diagonal line of a virtual quadrangular prism. The virtual quadrangular prism is constructed with the diagonal line as a diagonal, and three sides of the virtual quadrangular prism are respectively along a first direction, a second direction, and a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The third distance L3 between the initial point and the expansion point is determined based on the first distance L1, the second distance L2, and the third angle α3. A displacement of a pointer is determined. A comparison and verification are performed based on the third distance L3 and the displacement. A deformation state of the boiler component is determined based on the comparison and verification result.

[0007] In some technical solutions provided by the present application, the diagonal line of the virtual quadrangular prism is constructed with the line connecting the initial point and the expansion point as a diagonal. Three sides of the virtual quadrangular prism are respectively along a first direction, a second direction, and a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Before the step of determining the third angle α3 between the first distance and the second distance, the second angle α2 between the second distance and a horizontal plane is determined by the measuring element. After the step of determining the third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2, and the third angle α3, the fourth angle β between the second distance and the diagonal line is determined. The first deformation of the expansion point along the first direction is determined based on the fourth angle β, the second angle α2, and the third distance L3.

[0008] In some technical solutions provided by the present application, after the step of determining the first deformation of the expansion point along the first direction based on the fourth angle β, the second angle α2, and the third distance L3, the second deformation of the expansion point along the second direction is obtained. The fourth distance L4 between the projection point of the expansion point on a first plane and the initial point is determined. The third deformation of the expansion point along the third direction is determined based on the fourth distance L4 and the second deformation. The first plane is a surface of the virtual quadrangular prism, and the first plane has a spacing with the expansion point along the first direction.

[0009] In some technical solutions provided by the present application, the step of determining the fourth distance L4 between the projection point of the expansion point on the first plane and the initial point specifically comprises determining the fourth distance L4 based on the third distance L3 and the first deformation.

[0010] In some technical solutions provided by the present application, the step of determining the third angle α3 between the first distance and the second distance specifically comprises controlling the measuring element to measure a first angle α1 between the first distance and a horizontal plane. The third angle α3 is determined as the sum of the first angle α1 and the second angle α2.

[0011] In some technical solutions provided in the present application, the step of determining the fourth included angle β formed by the second connecting line and the diagonal line specifically comprises: determining the fourth included angle β based on the first distance L1, the second distance L2 and the third distance L3.

[0012] In some technical solutions provided in the present application, the step of receiving the displacement amount of the pointer specifically comprises: obtaining the displacement amount of the pointer along the first direction, the second direction and the third direction respectively. The step of performing comparison and verification based on the third distance L3 and the displacement amount specifically comprises: verifying the first deformation amount, the second deformation amount and the third deformation amount respectively according to the displacement amount.

[0013] A third aspect of the technical solutions of the present application provides a control device for measuring deformation of a boiler component. The control device comprises: a control module, a determination module and a comparison module. The control module is configured to control a measuring element to obtain a first distance L1 between the measuring element and an initial point. The control module is further configured to control the measuring element to obtain a second distance L2 between the measuring element and an expansion point. The determination module is configured to determine a third included angle α3 formed by a first connecting line and a second connecting line, wherein the first connecting line is a line connecting the measuring element and the initial point, and the second connecting line is a line connecting the measuring element and the expansion point. The determination module is further configured to determine a third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2 and the third included angle α3. The determination module is further configured to determine a displacement amount of a pointer. The comparison module is configured to perform comparison and verification based on the third distance L3 and the displacement amount. The determination module is further configured to determine a deformation state of the boiler component based on a verification result.

[0014] Compared with the related art, the present application at least includes the following beneficial effects:

[0015] The control device determines the deformation amount of the boiler component through the change of the marker point information, so that the staff can monitor the expansion state of the boiler component, analyze the deformation trend based on the expansion state, predict the expansion change and abnormal situation of the component in advance, reduce the safety hazards of the boiler component caused by expansion, and improve the safety and stability of the unit operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of some embodiments. The drawings are for purposes of illustration only and are not considered a limitation of the present application. Moreover, like reference numerals in the figures denote like elements throughout the various drawings. In the drawings:

[0017] Figure 1 A structural schematic diagram of a measuring device according to an embodiment of the present application;

[0018] Figure 2 A three-view of a measuring element according to an embodiment of the present application;

[0019] Figure 3 A perspective view of initial point positions and expansion point positions of an embodiment provided in the present application;

[0020] Figure 4 A schematic view of a virtual quadrangular prism of an embodiment provided in the present application;

[0021] Figure 5 A plan view of initial point positions and expansion point positions of an embodiment provided in the present application;

[0022] Figure 6 A flowchart of a measurement method of an embodiment provided in the present application;

[0023] Figure 7 A structural block diagram of a control device of an embodiment provided in the present application.

[0024] wherein, Figures 1 to 5 and Figure 7 The correspondence between the reference signs and the component names in the drawings is as follows:

[0025] 100, connecting rod; 200, target target; 300, measurement piece; 400, control device; 410, control module; 420, determination module; 430, acquisition module; 440, comparison module; 500, support; 600, pointer; 700, dial; 800, boiler component; ranging piece, 900. DETAILED DESCRIPTION

[0026] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, rather than limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0027] The first aspect embodiment of the present application provides a measurement device of the deformation of a boiler component 800, such as Figure 1As shown, the measuring device of the deformation of the boiler component 800 comprises a connecting rod 100, a target 200, a measuring element 300 and a control device 400. One end of the connecting rod 100 is used to connect the outer wall surface of the boiler component 800, and the connecting rod 100 extends towards the direction away from the outer wall surface. The target 200 is arranged at the other end of the connecting rod 100, and the target 200 is provided with a calibration point. When the boiler component 800 is in an initial state, the calibration point is located at an initial point. When the boiler component 800 is in an expanded state, the calibration point is located at an expansion point. The measuring element 300 is arranged in a spaced manner with the target 200. The measuring element 300 is used to obtain initial information of the initial point and expansion information of the expansion point. The control device 400 is used to determine the deformation of the boiler component 800 according to the initial information and the expansion information.

[0028] In this embodiment, the boiler component 800 is the measurement object of the deformation. The boiler component 800 is used for a thermal power generating unit. The boiler component 800 is a high-temperature pipeline or a boiler body water cooling wall device of a power plant. The high-temperature pipeline comprises at least one of a main steam pipeline, a hot reheat steam pipeline, a cold reheat steam pipeline and a high-pressure feedwater pipeline. The main steam pipeline is two high-temperature and high-pressure steam pipelines between a superheater outlet header and a high-pressure main steam valve interface. The hot reheat steam pipeline is two high-temperature and high-pressure steam pipelines between a reheater outlet header and a medium-pressure main steam valve interface. The cold reheat steam pipeline is two high-temperature and high-pressure steam pipelines between a high-pressure cylinder exhaust port and a reheater inlet header interface. The high-pressure feedwater pipeline is a high-pressure boiler feedwater pipeline between an electric feedwater pump outlet and a economizer inlet header interface. The boiler body water cooling wall device comprises any one of a water cooling wall upper header, a water cooling wall mixed intermediate header and a water cooling wall lower header, and a spiral segment tube panel and a vertical segment tube panel.

[0029] The connecting rod 100 is arranged perpendicularly to the outer wall surface of the boiler component 800. The two ends of the connecting rod 100 are connected to the boiler component 800 and the target 200 respectively. The measuring element 300 is arranged oppositely to the target 200. Exemplarily, a support 500 is arranged on the ground, and the measuring element 300 is installed on the top of the support 500. The measuring element 300 is used to obtain calibration point information on the target 200. The calibration point information comprises a distance between the measuring element 300 and the calibration point, and an inclination angle of a line connecting the calibration point and the measuring element 300. When the boiler component 800 expands, the boiler component 800 changes from an initial state to an expanded state. The expansion deformation is conducted to the target 200 through the connecting rod 100, so that the calibration point moves from the initial point to the expansion point. The control device 400 is communicatively connected to the measuring element 300 to receive initial information of the calibration point at the initial point and expansion information of the calibration point at the expansion point, and to determine the deformation of the boiler component 800 based on the initial information and the expansion information.

[0030] The control device 400 determines the deformation amount of the boiler component 800 through the change of the marker point information, enables the staff to monitor the expansion state of the boiler component 800, analyzes the deformation trend based on the expansion state, and predicts the expansion change and abnormal situation of the boiler component 800 in advance, reduces the safety hidden danger of the boiler component 800 due to expansion, and improves the safety and stability of the unit operation.

[0031] Exemplarily, the measuring member 300 is a laser ranging and angle measuring all-in-one machine. Alternatively, the measuring member 300 measures the coordinate change of the marker point by a visual method, such as Figure 2 As shown, the measuring member 300 is an industrial camera with an inclination angle measuring sensor, and the control device 400 is embedded in the camera chip of the industrial camera, which has the functions of optically capturing the marker point and realizing ranging. The measuring member 300 has the advantages of convenient installation, small space occupation, high measurement accuracy, strong anti-interference ability, strong adaptability to field environment, and the specific parameters of the measuring member 300 are as follows: X, Y, Z three-dimensional range: 0mm to 500mm;

[0032] Measurement accuracy: 1mm;

[0033] Recommended working distance: 400mm to 600mm;

[0034] Image resolution: 3840x2160;

[0035] Sensor type: 1 / 1.8"Progressive Scan CMOS;

[0036] Interface: Gigabit network port;

[0037] Support system: Windows(10, 11), Linux;

[0038] Focal length: 4mm;

[0039] Field of view (H / V): 1 / 1.8"103.2°x76.8°;

[0040] Power supply voltage: DC 12V±20%;

[0041] Power: 20W;

[0042] Starting and working temperature and humidity: -30℃-60℃, humidity less than 95%(no condensation);

[0043] Storage temperature and humidity: -30℃-60℃, humidity less than 95%(no condensation);

[0044] Body size: 142.5x69.8x68mm (excluding lens, excluding shield);

[0045] Lens size: Φ39x38;

[0046] Shroud size: 360 x 140 x 200;

[0047] Shroud working temperature: -30-80℃.

[0048] In some embodiments provided in the application, as shown in Figure 1 The measuring device further comprises a pointer 600, a telescopic part and a dial 700. The pointer 600 is arranged on the connecting rod 100. The telescopic part is in sliding connection with the bottom of the pointer 600. The telescopic part can perform telescopic movement along the height direction relative to the pointer 600. The telescopic part is used to indicate the displacement amount of the pointer 600 along the first direction. The dial 700 is perpendicular to the pointer 600. The bottom end of the telescopic part is in abutment with the dial 700. The dial 700 is used to indicate the displacement amount of the pointer 600 along the second direction and the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0049] In this embodiment, Figure 1 The Z position arrow points to the first direction, i.e. the vertical direction. The Y position arrow points to the second direction. The X position arrow points to the third direction. The three directions are perpendicular to each other. The deformation amount of the boiler component 800 includes a first deformation amount in the first direction, a second deformation amount in the second direction and a third deformation amount in the third direction.

[0050] The pointer 600 is arranged at the middle position of the connecting rod 100. The pointer 600 extends vertically downward along the first direction. The bottom of the pointer 600 is provided with the telescopic part. The telescopic part is in sliding connection with the pointer 600. The telescopic part can perform telescopic movement along the first direction relative to the pointer 600. The dial 700 is arranged below the pointer 600. The dial 700 is perpendicular to the pointer 600. The pointer 600 is in abutment with the top surface of the dial 700 through the telescopic part. When the connecting rod 100 moves due to the expansion of the boiler component 800, the pointer 600 moves along with the connecting rod 100. The dial 700 and the telescopic part remain in the abutment state. The pointer 600 or the telescopic part includes a scale with graduations. The scale is used to display the displacement amount of the pointer 600 along the first direction. The dial 700 includes a scale disc with graduations. The scale disc is used to display the displacement amount of the pointer 600 along the second direction and the third direction respectively. Since the pointer 600 moves along with the expansion of the boiler component 800, the displacement amount of the pointer 600 is the displacement amount of the boiler component 800. Thus, the displacement amount of the boiler component 800 along different directions is directly obtained through physical measurement. The displacement amount is used to verify the deformation amount of the boiler component 800.

[0051] According to the displacement amount of the pointer 600 along the first direction, the second direction and the third direction respectively, the first deformation amount S1, the second deformation amount S2 and the third deformation amount S3 are verified respectively. The accuracy of the measurement result is improved. The measurement deviation can be found and corrected in time.

[0052] Exemplarily, the measuring device further comprises a distance measuring element 900 for measuring the moving distance of the target 200 along the second direction. The distance measuring element 900 can be a laser distance meter. When the boiler component 800 is in the initial state, the target 200 is in contact with the distance measuring element 900. When the boiler component 800 is in the expanded state, the distance measuring element 900 stays at the initial position, and a distance between the target 200 and the distance measuring element 900 along the second direction is formed, which is measured by the distance measuring element 900.

[0053] In a second aspect, embodiments of the present application provide a measuring method for deformation of a boiler component. The measuring method is performed by using the measuring device for deformation of a boiler component provided in any one of the above embodiments. Figure 6 As shown in the figure, the measuring method comprises the following steps.

[0054] Step 1: controlling the measuring element to obtain a first distance L1 between the measuring element and the initial point;

[0055] Step 2: controlling the measuring element to obtain a second distance L2 between the measuring element and the expanded point;

[0056] Step 4: determining a third included angle a3 formed by the first connecting line and the second connecting line;

[0057] Step 5: determining a third distance L3 between the initial point and the expanded point based on the first distance L1, the second distance L2 and the third included angle a3;

[0058] Step 11: determining the displacement amount of the pointer;

[0059] Step 12: comparing and verifying based on the third distance L3 and the displacement amount;

[0060] Step 13: determining the deformation state of the boiler component based on the verification result.

[0061] In the embodiment, it should be noted that the boiler component does not generally twist when it expands, and the target translates along a straight line. The target before and after moving is perpendicular to the measuring direction of the measuring element. The target moves from the plane P1 to the plane P2. The point A is located on the plane P1, and the point B is located on the plane P2. The plane P1 and the plane P2 are parallel to each other.

[0062] In the embodiment, it should be noted that the boiler component does not generally twist when it expands, and the target translates along a straight line. The target before and after moving is perpendicular to the measuring direction of the measuring element. The target moves from the plane P1 to the plane P2. The point A is located on the plane P1, and the point B is located on the plane P2. The plane P1 and the plane P2 are parallel to each other.

[0063] The control device controls the measuring element to obtain a first distance L1 between the measuring element M and the initial point A, the first distance L1 being the length of the line segment MA, i.e. the marker point distance of the boiler component in the initial state. The control device controls the measuring element to obtain a second distance L2 between the measuring element M and the expansion point B, the second distance L2 being the length of the line segment MB, i.e. the marker point distance of the boiler component in the expanded state.

[0064] Figure 3 and Figure 5 In the triangle ABM formed by the initial point A, the expansion point B and the measuring element M, the first connecting line and the second connecting line are the side line MA and the side line MB respectively, and the third included angle α3 is ∠AMB. The control device calculates a third distance L3 between the initial point A and the expansion point B based on the first distance L1, the second distance L2 and the third included angle α3, the third distance L3 being the length of the line segment AB, wherein:

[0065] ;

[0066] The third distance L3 is the movement distance of the marker point, i.e. the expansion distance of the boiler component, and the third distance L3 directly reflects the expansion degree of the boiler. Determining the deformation amount of the boiler component enables the staff to monitor the expansion state of the boiler component and analyze the deformation trend based on the expansion state, so as to predict the expansion change and abnormal situation of the component in advance, reduce the safety hazards of the boiler component caused by expansion, and improve the safety and stability of the unit operation.

[0067] The control device not only determines the expansion state of the boiler component based on the measurement result of the measuring element, but also obtains the expansion state of the boiler component according to the displacement amount of the pointer. Since the pointer moves with the boiler component, the displacement amount of the pointer directly reflects the expansion amount of the boiler component. The control device compares and verifies the third distance L3 and the displacement amount, thereby verifying the accuracy of the third distance and ensuring the effectiveness of the third distance. The verification result can be the difference or ratio between the third distance and the displacement amount of the pointer. The control device determines the deformation state of the boiler component based on the verification result, so that the control device can more accurately determine the expansion state of the boiler component, thereby improving the accuracy of the boiler component monitoring.

[0068] Illustratively, the step of determining the deformation state of the boiler component based on the verification result by the control device specifically includes: comparing the verification result with a deformation threshold value, when the verification result is greater than the deformation threshold value, the boiler component is in a risk state, and when the verification result is less than the deformation threshold value, the boiler component is in a safe state.

[0069] Illustratively, the displacement amount of the pointer can be directly obtained by the path detection element arranged at the end of the pointer, or can be determined by calculating the displacement amount of the pointer in different directions.

[0070] In some embodiments provided in this application, a virtual quadrangular prism is constructed using the line connecting the initial point and the expansion point as the diagonal. The three sides of the virtual quadrangular prism connected to the initial point extend along the first direction, the second direction, and the third direction, respectively, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0071] Before step 4, which determines the third included angle α3 formed by the first and second lines, the process also includes:

[0072] Step 3: Control the measuring device to obtain the second angle α2 formed by the second connecting line and the horizontal plane;

[0073] After step 5, which determines the third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2, and the third included angle α3, the following steps are also included:

[0074] Step 6: Determine the fourth angle β formed by the second connecting line and the diagonal;

[0075] Step 7: Based on the fourth included angle β, the second included angle α2, and the third distance L3, determine the first deformation of the expansion point along the first direction.

[0076] In this embodiment, a method for determining the first deformation of a boiler component is provided. For example... Figure 4 As shown, initial point A and expansion point B are opposite vertices of a virtual quadrangular prism. For example, initial point A is located on the top surface of the virtual quadrangular prism, and expansion point B is located on the bottom surface. The line AB connecting initial point A and expansion point B is the longest diagonal of the virtual quadrangular prism. Edge AD1, connected to initial point A, extends along the first direction, edge AD2 extends along the second direction, and edge AD3 extends along the third direction. The deformation of the boiler component is divided into first deformation, second deformation, and third deformation along different directions.

[0077] Step 3 is located between steps 2 and 4, and steps 6 and 7 are located between steps 5 and 11. The control device controls the measuring element to obtain the second included angle α2 formed by the second connecting line MB and the horizontal plane. The control device determines the fourth included angle β between the second connecting line MB and the diagonal AB. Based on the fourth included angle β, the second included angle α2, and the third distance L3, the control device calculates the first deformation S1 of the expansion point B along the first direction, where:

[0078]

[0079] The first deformation variable S1 is the distance AD1 that the marker point moves along the first direction, which is the expansion distance of the boiler component along the first direction. The first deformation variable S1 accurately reflects the degree of expansion of the boiler in the first direction. By refining the analysis of the deformation of the boiler component, the staff can more accurately monitor the expansion status of the boiler component.

[0080] In some embodiments provided in the present application, after step 7 of determining the first deformation variable of the expansion point along the first direction based on the fourth angle β, the second angle α2 and the third distance L3, the method further comprises:

[0081] Step 8, obtaining a second deformation variable of the expansion point along the second direction;

[0082] Step 9, determining a fourth distance L4 between the projection point of the expansion point on the first plane and the initial point;

[0083] Step 10, determining a third deformation variable of the expansion point along the third direction based on the fourth distance L4 and the second deformation variable.

[0084] The first plane is the surface of the virtual quadrangular prism, and the first plane is spaced apart from the expansion point along the first direction.

[0085] In this embodiment, a method for determining the second deformation variable and the third deformation variable of the boiler component is provided. Steps 8 to 10 are located between step 7 and step 11, and the control device controls the distance measuring element to obtain the second deformation variable S2 of the expansion point B along the second direction. The second deformation variable S2 is the movement distance AD2 of the marker point along the second direction.

[0086] The first plane is the plane on which the line segment AD2 and the line segment AD3 are located. The first plane is the top surface or the bottom surface of the virtual quadrangular prism away from the expansion point B. The expansion point B is projected along the first direction, and the projection of the expansion point B on the first plane is the projection point C. The control device determines the fourth distance L4 between the projection point C and the initial point A. The fourth distance L4 is the length of the line segment AC. The control device calculates the third deformation variable S3 of the expansion point B along the third direction based on the fourth distance L4 and the second deformation variable S2. According to the Pythagorean theorem, we have:

[0087]

[0088] The second deformation variable S2 and the third deformation variable S3 are the movement distances AD2 and AD3 of the marker point along the second direction and the third direction, i.e. the expansion distances of the boiler component along the second direction and the third direction respectively. The second deformation variable S2 and the third deformation variable S3 further accurately reflect the expansion degree of the boiler in different directions, and further refine the deformation variable of the boiler component, so that the staff can more accurately monitor the expansion state of the boiler component.

[0089] In some embodiments provided in the present application, step 9 of determining the fourth distance L4 between the projection point of the expansion point on the first plane and the initial point specifically comprises:

[0090] Step 91, determining the fourth distance L4 based on the third distance L3 and the first deformation variable.

[0091] In this embodiment, a method for determining the fourth distance L4 is provided. Triangle ABC is a right triangle, and ∠ACB is a right angle. The control device determines the fourth distance L4 based on the third distance L3 and the first deformation S1, making the determination of the fourth distance L4 more accurate and faster. Specifically, according to the Pythagorean theorem:

[0092]

[0093] In some embodiments provided in this application, step 4 of determining the third included angle α3 formed by the first connecting line and the second connecting line specifically includes:

[0094] Step 41: Control the measuring device to obtain the first angle α1 formed by the first connecting line and the horizontal plane;

[0095] Step 42: Determine that the sum of the first included angle α1 and the second included angle α2 is the third included angle α3.

[0096] In this embodiment, a method for determining the third included angle α3 is provided. The control device controls the measuring element to obtain the first included angle α1 formed by the first connecting line MA and the horizontal plane. The control device determines that the sum of the first included angle α1 and the second included angle α2 is the third included angle α3, that is: α3 = α1 + α2. This calculation method is accurate and convenient, improving the efficiency and accuracy of calculating the third included angle α3.

[0097] In some embodiments provided in this application, step 6, determining the fourth included angle β formed by the second connecting line and the diagonal, specifically includes:

[0098] Step 61: Determine the fourth included angle β based on the first distance L1, the second distance L2, and the third distance L3.

[0099] In this embodiment, a method for determining the fourth included angle β is provided. The first distance L1, the second distance L2, and the third distance L3 are the three side lengths of triangle MAB, respectively. According to the law of cosines of a triangle:

[0100] cosβ=(L2 2 +L3 2 -L1 2 ) / (2×L2×L3);

[0101] Therefore, β = arccos[(L2 2 +L3 2 -L1 2 ) / (2×L2×L3)];

[0102] The fourth included angle β is calculated using the cosine theorem of triangles. The calculation method is accurate and convenient, improving the efficiency and accuracy of the calculation of the fourth included angle β.

[0103] In some embodiments provided in this application, step 11, which determines the displacement of the pointer, specifically includes:

[0104] Step 111: Obtain the displacement of the pointer along the first, second, and third directions respectively;

[0105] Step 12, which involves comparing and verifying the third distance L3 and the displacement, specifically includes:

[0106] Step 121: Verify the first deformation, second deformation, and third deformation according to the displacement.

[0107] In this embodiment, a specific verification method for the deformation of boiler component expansion is provided. The control device acquires the displacement of the pointer along the first, second, and third directions, respectively, and verifies the first deformation S1, the second deformation S2, and the third deformation S3 according to the displacement in the three directions, thereby improving the accuracy of the measurement results and enabling timely detection and correction of measurement deviations.

[0108] For example, the control device determines the difference between the displacement in the first direction and the first deformation S1. If the difference is within a threshold range, the control device determines that the measurement result is accurate. If the difference is outside the threshold range, the control device determines that the measurement result error is large. The control device then re-executes steps 1 to 12 and sends a prompt message. The steps for verifying the second deformation S2 and the third deformation S3 are the same as those for verifying the first deformation S1, and will not be described again here.

[0109] A third aspect of this application provides a control device 400 for the deformation of boiler components, such as... Figure 7 As shown, the control device 400 includes: a control module 410, a determination module 420, and a comparison module 440. The control module 410 is used to control the measuring element 300 to acquire a first distance L1 between the measuring element 300 and the initial point; the control module 410 is also used to control the measuring element 300 to acquire a second distance L2 between the measuring element 300 and the expansion point; the determination module 420 is used to determine a third angle α3 formed by a first connecting line and a second connecting line, wherein the connecting line between the measuring element 300 and the initial point is the first connecting line, and the connecting line between the measuring element 300 and the expansion point is the second connecting line; the determination module 420 is also used to determine a third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2, and the third angle α3. The determination module 420 is also used to receive the displacement of the pointer 600, and the comparison module 440 is used to perform a comparison verification based on the third distance L3 and the displacement; the determination module 420 is also used to determine the deformation state of the boiler component based on the verification result.

[0110] In the embodiment, the control device 400 determines the deformation amount of the boiler component 800 by the change of the marker point information, enables the staff to monitor the expansion state of the boiler component 800, analyzes the deformation trend based on the expansion state, predicts the expansion change and abnormal situation of the boiler component 800 in advance, reduces the safety hidden danger of the boiler component 800 due to expansion, and improves the safety and stability of the unit operation.

[0111] In some embodiments provided in the application, a virtual quadrangular prism is constructed with the line connecting the initial point and the expansion point as a diagonal line, three edges connected with the initial point in the virtual quadrangular prism extend along the first direction, the second direction and the third direction respectively, and the first direction, the second direction and the third direction are perpendicular to each other. The control module 410 is further configured to control the measuring member 300 to obtain a second included angle a2 formed by the second connecting line and a horizontal plane; the determination module 420 is further configured to determine the third distance L3 based on the first distance L1, the second distance L2 and the third distance L3. The determination module 420 is further configured to determine a fourth included angle β formed by the second connecting line and the diagonal line; and the determination module 420 is further configured to determine a first deformation amount of the expansion point along the first direction based on the fourth included angle β, the second included angle a2 and the third distance L3.

[0112] In some embodiments provided in the application, the control device 400 further comprises an acquisition module 430, the acquisition module 430 is configured to acquire a second deformation amount of the expansion point along the second direction; the determination module 420 is further configured to determine a fourth distance L4 between the projection point of the expansion point on the first plane and the initial point; and the determination module 420 is further configured to determine a third deformation amount of the expansion point along the third direction based on the fourth distance L4 and the second deformation amount. The first plane is a surface of the virtual quadrangular prism, and the first plane forms a spacing with the expansion point along the first direction.

[0113] In some embodiments provided in the application, the determination module 420 is further configured to determine the fourth distance L4 based on the third distance L3 and the first deformation amount.

[0114] In some embodiments provided in the application, the control module 410 is further configured to control the measuring member 300 to obtain a first included angle a1 formed by the first connecting line and a horizontal plane; and the determination module 420 is further configured to determine that the sum of the first included angle a1 and the second included angle a2 is a third included angle a3.

[0115] In some embodiments provided in the application, the determination module 420 is further configured to determine the fourth included angle β based on the first distance L1, the second distance L2 and the third distance L3.

[0116] In some embodiments provided in the present application, after the step of determining the third deformation variable of the expansion point along the third direction based on the fourth distance L4 and the second deformation variable, the method further comprises: obtaining displacement amounts of the pointer along the first direction, the second direction and the third direction respectively; and checking the first deformation variable, the second deformation variable and the third deformation variable according to the displacement amounts respectively.

[0117] In the present application, the terms "first", "second", "third" are used only for descriptive purposes, and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be interpreted broadly, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connecting" can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0118] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0119] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like are intended to mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does 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.

[0120] The above is only some embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the deformation of a boiler component, characterized in that, include: A connecting rod, one end of which is used to connect to the outer wall surface of a boiler component, the connecting rod extending in a direction away from the outer wall surface; A target is located at the other end of the connecting rod. The target has a calibration point. When the boiler component is in the initial state, the calibration point is located at the initial point position. When the boiler component is in the expansion state, the calibration point is located at the expansion point position. A measuring element is provided at an interval from the target, and the measuring element is used to obtain initial information of the initial point and expansion information of the expansion point; A control device, the control device being used to determine the deformation of the boiler component based on the initial information and the expansion information; A pointer is located on the connecting rod; A telescopic component is slidably connected to the bottom of the pointer. The telescopic component is capable of telescopic movement relative to the pointer along the height direction. The telescopic component is used to indicate the amount of displacement of the pointer along a first direction. The dial is perpendicular to the pointer, and the bottom end of the telescopic member abuts against the dial. The dial is used to indicate the amount of displacement of the pointer along a second direction and a third direction. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other; The control device is also used to control the measuring element to obtain a first distance L1 between the measuring element and the initial point; The control device is also used to control the measuring element to obtain a second distance L2 between the measuring element and the expansion point; The control device is also used to determine the third included angle α3 formed by the first line and the second line, wherein the line connecting the measuring element and the initial point is the first line, and the line connecting the measuring element and the expansion point is the second line. The control device is also used to determine the third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2 and the third included angle α3; The control device is also used to determine the displacement of the pointer; The control device is also used to perform a comparison and verification based on the third distance L3 and the displacement; The control device is also used to determine the deformation state of boiler components based on the verification results.

2. A method for measuring the deformation of boiler components, characterized in that, The measurement method using the boiler component deformation measuring device as described in claim 1 includes: The control measuring device acquires the first distance L1 between the measuring device and the initial point; The measuring device is controlled to obtain a second distance L2 between the measuring device and the expansion point; Determine the third included angle α3 formed by the first line and the second line, wherein the line connecting the measuring element and the initial point is the first line, and the line connecting the measuring element and the expansion point is the second line; Based on the first distance L1, the second distance L2 and the third included angle α3, the third distance L3 between the initial point and the expansion point is determined; Determine the pointer displacement; A comparison and verification are performed based on the third distance L3 and the displacement. The deformation state of boiler components is determined based on the verification results.

3. The method for measuring the deformation of boiler components according to claim 2, characterized in that, Using the line connecting the initial point and the expansion point as the diagonal, a virtual quadrangular prism is constructed. The three sides of the virtual quadrangular prism connected to the initial point extend along the first direction, the second direction, and the third direction, respectively. The first direction, the second direction, and the third direction are perpendicular to each other. Before determining the third included angle α3 formed by the first and second lines, the following steps are also included: The measuring device is controlled to obtain the second included angle α2 formed by the second connecting line and the horizontal plane; After determining the third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2, and the third included angle α3, the method further includes: Determine the fourth included angle β formed by the second connecting line and the diagonal; Based on the fourth included angle β, the second included angle α2, and the third distance L3, the first deformation of the expansion point along the first direction is determined.

4. The method for measuring the deformation of boiler components according to claim 3, characterized in that, After determining the first deformation of the expansion point along the first direction based on the fourth included angle β, the second included angle α2, and the third distance L3, the method further includes: Obtain the second deformation of the expansion point along the second direction; Determine a fourth distance L4 between the projection point of the expansion point on the first plane and the initial point, wherein the first plane is the surface of the virtual quadrangular prism, and the first plane and the expansion point form a distance along the first direction; Based on the fourth distance L4 and the second deformation, the third deformation along the third direction of the expansion point is determined.

5. The method for measuring the deformation of boiler components according to claim 4, characterized in that, The step of determining the fourth distance L4 between the projection point of the expansion point on the first plane and the initial point specifically includes: The fourth distance L4 is determined based on the third distance L3 and the first deformation.

6. The method for measuring the deformation of boiler components according to any one of claims 3 to 5, characterized in that, The steps to determine the third included angle α3 formed by the first and second lines are as follows: The measuring device is controlled to obtain the first angle α1 formed by the first connecting line and the horizontal plane; The sum of the first included angle α1 and the second included angle α2 is determined to be the third included angle α3.

7. The method for measuring the deformation of boiler components according to any one of claims 3 to 5, characterized in that, The step of determining the fourth included angle β formed by the second connecting line and the diagonal specifically includes: The fourth included angle β is determined based on the first distance L1, the second distance L2, and the third distance L3.

8. The method for measuring the deformation of boiler components according to claim 4 or 5, characterized in that, The steps to determine the pointer's displacement specifically include: Obtain the displacement of the pointer along the first direction, the second direction, and the third direction, respectively; The steps for comparing and verifying based on the third distance L3 and the displacement specifically include: The first deformation, the second deformation, and the third deformation are verified based on the displacement.

9. A control device for measuring the deformation of boiler components, characterized in that, include: The control module is used to control the measuring device to obtain the first distance L1 between the measuring device and the initial point. The control module is also used to control the measuring element to obtain the second distance L2 between the measuring element and the expansion point; The determining module is used to determine the third included angle α3 formed by the first connecting line and the second connecting line, wherein the line connecting the measuring element and the initial point is the first connecting line, and the line connecting the measuring element and the expansion point is the second connecting line; The determining module is further configured to determine the third distance L3 between the initial point and the expansion point based on the first distance L1, the second distance L2 and the third included angle α3; The determining module is also used to determine the displacement of the pointer; The comparison module is used to perform comparison and verification based on the third distance L3 and the displacement. The determining module is also used to determine the deformation state of boiler components based on the verification results.

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