Device and method for detecting deformation of containment vessel of nuclear power station
By setting up a fluid module and a deformation acquisition module on the surface of the nuclear power plant containment shell, combining image information and pressure change information, real-time and accurate detection of the deformation of the nuclear power plant containment shell is achieved, and the objectivity and accuracy of traditional detection methods are solved, and the convenience and applicability of detection are improved.
Patent Information
- Application Number
- CN202510204814.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-06-06
AI Technical Summary
The traditional nuclear power plant containment deformation detection method is affected by human factors and instrument accuracy, resulting in a decrease in objectivity and accuracy of the detection results, and the real-time monitoring cannot be achieved, the measurement frequency is low, and trend analysis cannot be carried out immediately.
A detection device is designed, including a fluid module, a first deformation acquisition module, a first deformation determination module, a second deformation acquisition module and a second deformation determination module. The fluid in the fluid module flows according to the deformation of the nuclear power plant containment shell and generates a height difference. The first deformation acquisition module obtains the deformation information of the first test point through image information. The second deformation acquisition module obtains the pressure change information of the second test point through current pressure information, and combines the two to determine the deformation information of the nuclear power plant containment shell.
Real-time monitoring of nuclear power plant containment is realized, the objectivity and accuracy of the detection results are improved, and the working status of nuclear power plant containment can be detected without human observation, which improves the convenience and applicability of detection.
Smart Images
Figure CN120108798A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of nuclear power plant containment deformation detection, and in particular to a nuclear power plant containment deformation detection device and method. Background Art
[0002] The containment of a nuclear power plant is a safety barrier of the nuclear power plant. The containment of a nuclear power plant is a prestressed concrete structure. It is necessary to regularly measure the deformation of the dome of the containment of the nuclear power plant to ensure that the containment structure is in a normal state.
[0003] In traditional technology, deformation measurement of the containment dome of a nuclear power plant is usually carried out manually using measurement methods such as geometric leveling and trigonometric height measurement. However, the measurement methods using geometric leveling and trigonometric height measurement are affected by human factors and instrument accuracy, which reduces the objectivity and accuracy of the test results. In addition, real-time monitoring cannot be achieved, the measurement frequency is low, and trend analysis cannot be performed immediately based on the test data. It requires a lot of manpower, has high work risks, and has low measurement efficiency. Summary of the invention
[0004] Based on this, the present application provides a device and method for detecting deformation of a nuclear power plant containment, which can accurately detect whether the nuclear power plant containment is deformed, can perform real-time monitoring of the nuclear power plant containment, and obtain deformation information of the nuclear power plant containment, thereby improving the objectivity and accuracy of the detection results.
[0005] To achieve the purpose of this application, this application provides the following technical solutions:
[0006] In a first aspect, the present application provides a device for detecting deformation of a containment vessel of a nuclear power plant, comprising:
[0007] A fluid module is arranged on the surface of the containment of the nuclear power plant, and the fluid module is filled with fluid;
[0008] A first deformation acquisition module, comprising an image acquisition device, for acquiring image information of a first test point and a reference point on the surface of the nuclear power plant containment vessel, wherein the direction from the first test point to the reference point is a first direction, and the first direction is a direction from the center of the surface to the edge of the surface;
[0009] A first deformation determination module, used to determine first deformation information of the first test point according to the image information;
[0010] A second deformation acquisition module is used to obtain current pressure information of a second test point on the surface of the containment vessel of the nuclear power plant;
[0011] A second deformation determination module is used to determine the pressure change information of the second test point according to the current pressure information and the standard pressure information, and to determine the second deformation information of the second test point according to the pressure change information and the first deformation information, wherein the direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction.
[0012] In one embodiment, the fluid module includes a plurality of sub-fluid modules, each of which is in the shape of a ring; each of the sub-fluid modules in the ring is concentrically arranged about the center of the surface of the nuclear power plant containment vessel.
[0013] In one embodiment, the first test points include at least two, and the second test points include at least two;
[0014] A plurality of the first test points are arranged along the first direction.
[0015] In one embodiment, the second test points are arranged along the first direction; and / or the second test points are arranged circumferentially along the surface of the nuclear power plant containment vessel.
[0016] In one of the embodiments, the first test point and the second test point are arranged circumferentially along the surface of the nuclear power plant containment vessel; and the circumferentially arranged test points are equidistantly arranged.
[0017] In one embodiment, the distance between at least one of the second test points and the center of the surface is equal to the distance between one of the first test points and the center of the surface.
[0018] In one of the embodiments, the first deformation acquisition module includes a pressure detection unit for detecting current pressure information of the first test point, and the first deformation information includes the current pressure information of the first test point and the image information.
[0019] In a second aspect, the present application provides a method for detecting deformation of a containment vessel of a nuclear power plant, comprising:
[0020] The fluid module is arranged on the surface of the containment of the nuclear power plant, wherein the fluid module is filled with fluid;
[0021] Acquire image information of a first test point and a reference point on the surface of the containment vessel of the nuclear power plant, wherein the direction from the first test point to the reference point is a first direction, and the first direction is a direction from the center of the surface to the edge of the surface;
[0022] Determining first deformation information of the first test point according to the image information;
[0023] Acquiring current pressure information of a second test point on the surface of the containment vessel of the nuclear power plant;
[0024] According to the current pressure information and the standard pressure information, the pressure change information of the second test point is determined, and according to the pressure change information and the first deformation information, the second deformation information of the second test point is determined, the direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction.
[0025] In one of the embodiments, after acquiring the current pressure information of the second test point on the surface of the nuclear power plant containment vessel and before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes:
[0026] Used to determine first compensation information according to the image information and current pressure information of the first test point;
[0027] First compensation pressure information of the second test point is determined according to the first compensation information and a relative position relationship between the first test point and the second test point.
[0028] In one of the embodiments, after acquiring the current pressure information of the second test point on the surface of the nuclear power plant containment vessel and before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes:
[0029] determining second compensation information according to the viscosity of the fluid;
[0030] Second compensated pressure information of the second test point is determined according to the second compensation information and current pressure information of the second test point.
[0031] The detection device and method of the deformation of the nuclear power plant containment shell of the present application, by setting a fluid module on the surface of the nuclear power plant containment shell, the fluid in the fluid module will flow according to the height difference caused by the deformation of the nuclear power plant containment shell until it reaches a stable state. The first deformation acquisition module can obtain the image information of the first test point and the reference point, and the image information can intuitively reflect the actual position of the first test point. The first deformation determination module can obtain the first deformation information according to the actual position of the first test point to determine whether the surface of the nuclear power plant containment shell at the first test point is deformed, and the deformation size and other parameters. Further, the second deformation acquisition module is based on the current pressure value of the fluid in the fluid module at the second test point, and the second deformation determination module can compare the current pressure value of the second test point with the standard pressure information to determine the pressure change of the second test point. Through the deformation information at the first test point, combined with the pressure change of the second test point, it is possible to analyze whether the first test point is deformed, and the influence of the deformation on the flow of the fluid in the fluid module. Therefore, when the first test point deforms and causes fluid flow, the influence of the fluid flow caused by the deformation of the first test point on the current pressure value at the second test point can be eliminated, and the pressure change information can be corrected. Further, the second deformation information of the nuclear power plant containment at the second test point can be determined according to the corrected pressure change information. It can then be accurately determined whether the nuclear power plant containment at the second test point is deformed, and the comprehensiveness, accuracy and objectivity of the detection results can be improved. It can then detect the working status of the nuclear power plant containment without the need for manual observation, and improve the convenience and applicability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0033] Figure 1 It is a schematic structural diagram of a detection device for deformation of a containment vessel of a nuclear power plant provided in an embodiment of the present application;
[0034] Figure 2 It is a schematic top view of a structure of a detection device for deformation of a containment vessel of a nuclear power plant provided in an embodiment of the present application;
[0035] Figure 3 is a schematic cross-sectional structural diagram of a detection device for deformation of a nuclear power plant containment vessel provided in an embodiment of the present application;
[0036] Figure 4A schematic flow chart of a method for detecting deformation of a nuclear power plant containment vessel provided in real time in this application.
[0037] Description of Reference Numerals
[0038] 00, reference point; 01, first test point; 02, second test point; 100, fluid module; 101, sub-fluid module; 200, first deformation acquisition module; 300, first deformation determination module; 400, second deformation acquisition module; 500, second deformation determination module. DETAILED DESCRIPTION
[0039] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0041] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that when the terms "consisting of" and / or "comprising" are used in this specification, the presence of the features, integers, steps, operations, elements and / or parts can be determined, but the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups is not excluded. At the same time, when used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0042] The containment of a nuclear power plant is a safety barrier of the nuclear power plant. The containment of a nuclear power plant is a prestressed concrete structure. It is necessary to regularly measure the deformation of the dome of the containment of the nuclear power plant to ensure that the containment structure is in a normal state.
[0043] In traditional technology, deformation measurement of the containment dome of a nuclear power plant is usually carried out manually using measurement methods such as geometric leveling and trigonometric height measurement. However, the measurement methods using geometric leveling and trigonometric height measurement are affected by human factors and instrument accuracy, which reduces the objectivity and accuracy of the test results. In addition, real-time monitoring cannot be achieved, the measurement frequency is low, and trend analysis cannot be performed immediately based on the test data. It requires a lot of manpower, has high work risks, and has low measurement efficiency.
[0044] The present application provides a device for detecting deformation of a nuclear power plant containment vessel. Figure 1 , Figure 2 and Figure 3 The detection device for the deformation of the containment of a nuclear power plant comprises: a fluid module 100, a first deformation acquisition module 200, a first deformation determination module 300, a second deformation acquisition module 400 and a second deformation determination module 500. The fluid module 100 is arranged on the surface of the containment of the nuclear power plant, and the fluid module 100 is filled with fluid. The first deformation acquisition module 200 comprises an image acquisition device, which is used to obtain image information of a first test point 01 and a reference point 00 on the surface of the containment of the nuclear power plant, wherein the direction from the first test point 01 to the reference point 00 is the first direction, and the first direction is the direction from the center of the surface to the edge of the surface. The first deformation determination module 300 is used to determine the first deformation information of the first test point 01 according to the image information. The second deformation acquisition module 400 is used to obtain the current pressure information of the second test point 02 on the surface of the containment of the nuclear power plant. The second deformation determination module 500 is used to determine the pressure change information of the second test point 02 based on the current pressure information and the standard pressure information, and to determine the second deformation information of the second test point 02 based on the pressure change information and the first deformation information, wherein the direction from the first test point 01 to the second test point 02 is the second direction, and the first direction intersects with the second direction.
[0045] It should be noted that the first direction includes multiple directions from the center of the surface to the edge of the surface, and the second direction includes multiple directions, which are not shown in the figure. Among them, the second direction can be a direction opposite to the first direction, or the second direction can be a direction intersecting with the first direction.
[0046] Exemplarily, the fluid module 100 may include but is not limited to connected pipes, and the liquid filled in the fluid module 100 may include but is not limited to flowing liquids such as water. The type of fluid can be selected according to the viscosity, density and other properties of the fluid so that the pressure conduction of the fluid module 100 is adapted to the actual detection conditions of the nuclear power plant containment.
[0047] Exemplarily, the image acquisition device may be, but is not limited to, a USB (Universal Serial Bus) camera, an industrial camera, a scientific camera, etc. The image acquisition device may capture an image of the first test point 01 .
[0048] Exemplarily, the surface of the first test point 01 may be provided with luminous lamp beads, and the image acquisition device may accurately determine the position of the first test point 01 according to the position of the luminous lamp beads. The image acquisition device may acquire the surface images of the nuclear power plant containment at all the first test points 01 and the reference point 00 at one time, and determine the first deformation information of the nuclear power plant containment at the first test point 01 according to the relative position relationship between the first test point 01 and the reference point 00.
[0049] Exemplarily, the first direction is as follows Figure 2 The direction of OX is shown in .
[0050] Exemplarily, the surface center is the center position of the nuclear power plant containment vessel. In a specific embodiment, when the top surface of the nuclear power plant containment vessel is circular, the surface center is the center position of the top surface of the nuclear power plant containment vessel.
[0051] For example, reference point 00 is a standard point of the nuclear power plant containment when there is no deformation. It should be noted that, when the nuclear power plant containment is deformed, reference point 00 is regarded as a fixed point. Reference point 00 is located outside the nuclear power plant containment.
[0052] Exemplarily, the first deformation information can be obtained by comparing the position of the first test point 01 with the reference, and by judging the position change of the first test point 01. Specifically, the distance between the reference point 00 and the first test point 01, and the distance between the reference point 00 and the image acquisition device can be set according to the actual situation of the nuclear power plant containment, so that the image acquisition device can clearly capture the distance between the first test point 01 and the reference point 00, thereby improving the objectivity and accuracy of the detection results.
[0053] Exemplarily, the standard pressure information is the pressure value of the second test point 02 when the nuclear power plant containment is not deformed, and the current pressure information may include the pressure value of the second test point 02 at that time. The current pressure information can be detected by the fluid flow in the fluid module 100 for the specific deformation of the nuclear power plant containment at the second test point 02. The pressure change information is the difference between the current pressure information and the standard pressure information.
[0054] Exemplarily, the pressure change information at the second test point 02 is obtained by superimposing the deformations occurring at the first test point 01 and the second test point 02. The deformation at the first test point 01 will cause the fluid flow to produce a certain pressure disturbance at the second test point 02. The pressure change information is jointly determined by the pressure disturbance generated by the first test point 01 and the actual pressure change caused by the deformation of the second test point 02.
[0055] The detection device for the deformation of the nuclear power plant containment shell of the present application sets a fluid module 100 on the surface of the nuclear power plant containment shell. The fluid in the fluid module 100 will flow according to the height difference caused by the deformation of the nuclear power plant containment shell until it reaches a stable state. The first deformation acquisition module 200 can obtain the image information of the first test point 01 and the reference point 00. The image information can intuitively reflect the actual position of the first test point 01. The first deformation determination module 300 can obtain the first deformation information according to the actual position of the first test point 01 to determine whether the surface of the nuclear power plant containment shell at the first test point 01 is deformed, as well as parameters such as the deformation size. Further, the second deformation acquisition module 400 can determine the pressure change of the second test point 02 by comparing the current pressure value of the fluid in the fluid module 100 at the second test point 02 with the standard pressure information. Through the deformation information at the first test point 01 and the pressure change at the second test point 02, it is possible to analyze whether the first test point 01 is deformed and the influence of the deformation on the fluid flow in the fluid module 100. Therefore, when the first test point 01 is deformed and causes fluid flow, the influence of the fluid flow caused by the deformation of the first test point 01 on the current pressure value at the second test point 02 can be eliminated, and the pressure change information can be corrected. Further, the second deformation information of the nuclear power plant containment at the second test point 02 can be determined according to the corrected pressure change information. Therefore, it is possible to accurately determine whether the nuclear power plant containment at the second test point 02 is deformed, and the comprehensiveness, accuracy and objectivity of the detection results can be improved. Therefore, the working state of the nuclear power plant containment can be detected without manual observation, thereby improving the convenience and applicability of the detection.
[0056] In some embodiments, see Figure 2 and Figure 3 The fluid module 100 includes a plurality of sub-fluid modules 101, and the sub-fluid modules 101 are in the shape of a ring; each of the ring-shaped sub-fluid modules 101 is concentrically arranged about the surface center of the nuclear power plant containment.
[0057] As an example, the number of sub-fluid modules 101 can be set according to the number of first test points 01 and second test points 02. The more sub-fluid modules 101 there are, the more first test points 01 and second test points 02 there are set on the sub-fluid modules 101, and the more accurate the detection result of the deformation of the nuclear power plant containment shell by the detection device for the deformation of the nuclear power plant containment shell. The annular sub-fluid module 101 can ensure that the fluid in the sub-fluid module 101 flows evenly in the sub-fluid module 101. The concentric arrangement of the annular sub-fluid modules 101 about the surface center of the nuclear power plant containment shell can make the sub-fluid modules 101 at the same height, and then make the fluid in the same sub-fluid module 101 at the same height, and the fluid in the same sub-fluid module 101 is subjected to the same gravity, so that it can be ensured that the fluid in the same sub-fluid module 101 flows only due to the pressure difference caused by the deformation of the nuclear power plant containment shell. Then, the pressure values of the first test point 01 and the second test point 02 of the same sub-fluid module 101 can be accurately obtained, thereby improving the accuracy and objectivity of the detection results.
[0058] The detection device for the deformation of the nuclear power plant containment provided in the embodiment of the present application can ensure that the fluid in the sub-fluid module 101 flows evenly in the sub-fluid module 101 by setting the sub-fluid module 101 in a ring shape. Arranging the sub-fluid modules 101 in a ring shape concentrically with respect to the surface center of the nuclear power plant containment can make the sub-fluid modules 101 at the same height, and thus make the fluid in the same sub-fluid module 101 at the same height, and the fluid in the same sub-fluid module 101 is subjected to the same gravity, so that it can be ensured that the fluid in the same sub-fluid module 101 flows only due to the pressure difference caused by the deformation of the nuclear power plant containment. In addition, the pressure values of the first test point 01 and the second test point 02 of the same sub-fluid module 101 can be accurately obtained, thereby improving the accuracy and objectivity of the detection results.
[0059] In some embodiments, please refer to Figure 2 and Figure 3 , the first test points 01 include at least two, and the second test points 02 include at least two. The plurality of first test points 01 are arranged along a first direction.
[0060] As an example, the number of first test points 01 and the number of second test points 02 can be set according to the actual size of the detection device for the deformation of the nuclear power plant containment. The more the number of first test points 01 and second test points 02 is set, the more accurate the detection result of the nuclear power plant containment deformation detection device for the nuclear power plant containment. The first test point 01 includes at least two, which can ensure that the first test point 01 is set at the surface center position of the nuclear power plant containment, and between the surface center position and the reference point 00. While testing the surface center of the nuclear power plant containment and pointing to the surface edge position, the first test point 01 can be compared with the reference point 00 to determine whether the test position of the first reference point 00 is deformed. By setting at least two second test points 02, the second test point 02 can be set while the first test point 01 is set on the same sub-fluid module 101, so that the deformation information obtained by the second test point 02 is combined with the deformation information of the first test point 01 to obtain the deformation size of the second test point 02.
[0061] As an example, multiple first test points 01 are arranged along the first direction, so that the first deformation determination module 300 can determine whether the multiple first test points 01 are arranged on the same straight line. It should be noted that, in the case where the position of the first test point 01 of the containment of the nuclear power plant is deformed, the first deformation determination module 300 can determine the deformation size of the first test point 01 according to the offset of the first test point 01 on the same straight line shown by the image information.
[0062] The detection device for the deformation of the containment of a nuclear power plant provided in the embodiment of the present application can accurately detect whether the containment of a nuclear power plant is deformed by setting at least two first test points 01 and at least two second test points 02, and arranging the first test points 01 along the first direction can enable the first deformation determination module 300 to determine the deformation size of the first test point 01 according to the offset of the first test point 01 on the same straight line displayed by the image information, thereby improving the objectivity and reliability of the detection result.
[0063] In some embodiments, please refer to Figure 2 and Figure 3 , the second test points 02 are arranged along the first direction.
[0064] In some embodiments, please refer to Figure 2 and Figure 3 The second test point 02 is arranged circumferentially along the surface of the nuclear power plant containment.
[0065] As an example, the second test point is 02 along the Figure 2The first direction shown in the figure is arranged, and the second test point 02 is arranged circumferentially along the surface of the nuclear power plant containment.
[0066] In another example, the second test point 02 is along Figure 2 Arranged in the first direction shown in .
[0067] In yet another example, the second test point 02 is along Figure 2 The surface of the nuclear power plant containment vessel shown in is arranged circumferentially.
[0068] The detection device for the deformation of the containment of a nuclear power plant provided in the embodiment of the present application can determine the deformation at different heights by arranging in the first direction, and can determine the deformation at different positions at the same height by arranging in the circumferential direction, and the circumferential arrangement can reduce the influence of the gravity of the fluid on the current pressure information. The number of second test points is increased to improve the comprehensiveness of the detection results.
[0069] In some embodiments, please refer to Figure 2 and Figure 3 The first test point 01 and the second test point 02 are arranged circumferentially along the surface of the nuclear power plant containment. The circumferentially arranged test points are arranged equidistantly.
[0070] As an example, the first test point 01 and the second test point 02 are arranged circumferentially along the surface of the nuclear power plant containment. The distance between the circumferentially arranged test points can be set according to the actual size of the nuclear power plant containment.
[0071] The nuclear power plant containment deformation detection device provided in the embodiment of the present application can evenly distribute the test points on the surface of the nuclear power plant containment by equidistantly arranging the test points in a circumferential direction. Furthermore, when there is fluid flow between adjacent second test points, the difficulty of analyzing the impact of fluid flow on current pressure information can be reduced, thereby improving the comprehensiveness and objectivity of the detection results.
[0072] In some embodiments, please refer to Figure 2 and Figure 3 , the distance between at least one second test point 02 and the center of the surface is equal to the distance between one first test point 01 and the center of the surface.
[0073] As an example, the distance between at least one second test point 02 and the center of the surface is equal to the distance between a first test point 01 and the center of the surface, so that a sub-fluid module 101 includes a first test point 01 and at least one second test point 02, and the second test point 02 can use the first test point 01 as a reference for deformation detection.
[0074] The detection device for the deformation of the containment of a nuclear power plant provided in the embodiment of the present application can make the first test point 01 and the second test point 02 at the same height by setting the distance between at least one second test point 02 and the center of the surface equal to the distance between a first test point 01 and the center of the surface, so that when the containment of the nuclear power plant is not deformed, the gravity of the first test point 01 and the second test point 02 on the fluid module 100 is the same, thereby reducing the difficulty of analyzing the fluid pressure. The accuracy and objectivity of the detection results are improved.
[0075] In some embodiments, the first deformation acquisition module 200 includes a pressure detection unit for detecting current pressure information of the first test point 01 , and the first deformation information includes current pressure information and image information of the first test point 01 .
[0076] As an example, the pressure detection unit may include but is not limited to a pressure sensor, which can detect the pressure and convert it into an output signal.
[0077] The nuclear power plant containment deformation detection device provided in the embodiment of the present application can intuitively reflect the current pressure value at the first test point 01 by detecting the pressure value of the first test point 01 through the pressure detection unit, reduce the difficulty of correcting the pressure change information of the second test point 02, improve the accuracy of the detection result, and improve the comprehensiveness of the detection result.
[0078] The present application also provides a method for detecting deformation of a nuclear power plant containment vessel. Figure 4 ,include:
[0079] S11: The fluid module is arranged on the surface of the containment of the nuclear power plant, and the fluid module is filled with fluid.
[0080] Exemplarily, the fluid module 100 may include but is not limited to connected pipes, and the liquid filled in the fluid module 100 may include but is not limited to flowing liquids such as water. The type of fluid can be selected according to the viscosity, density and other properties of the fluid so that the pressure conduction of the fluid module 100 is adapted to the actual detection conditions of the nuclear power plant containment.
[0081] Exemplarily, the fluid module 100 may be fixed to the surface of the nuclear power plant containment vessel by, but not limited to, gluing.
[0082] S12: Obtain image information of a first test point and a reference point on the surface of the nuclear power plant containment vessel, wherein the direction from the first test point to the reference point is a first direction, and the first direction is a direction from the center of the surface to the edge of the surface.
[0083] Exemplarily, the image acquisition device may be, but is not limited to, a USB (Universal Serial Bus) camera, an industrial camera, a scientific camera, etc. The image acquisition device may capture an image of the first test point 01 .
[0084] Exemplarily, the surface of the first test point 01 may be provided with light-emitting lamp beads, and the image acquisition device may accurately determine the position of the first test point 01 according to the position of the light-emitting lamp beads.
[0085] Exemplarily, the first direction is as follows Figure 2 The direction of OX is shown in .
[0086] Exemplarily, the surface center is the center position of the nuclear power plant containment vessel. In a specific embodiment, when the top surface of the nuclear power plant containment vessel is circular, the surface center is the center position of the top surface of the nuclear power plant containment vessel.
[0087] Exemplarily, the reference point is a standard point of the nuclear power plant containment vessel when no deformation occurs. It should be noted that, when the nuclear power plant containment vessel is deformed, the reference point is regarded as a fixed point.
[0088] S13: Determine first deformation information of a first test point according to the image information.
[0089] Exemplarily, the first deformation information can be obtained by comparing the position of the first test point 01 with the reference, and by judging the position change of the first test point 01. Specifically, the distance between the reference point and the first test point 01, and the distance between the reference point and the image acquisition device can be set according to the actual situation of the nuclear power plant containment, so that the image acquisition device can clearly capture the distance between the first test point 01 and the reference point, thereby improving the objectivity and accuracy of the detection results.
[0090] In a specific embodiment, the deformation measurement result of the first test point 01 at time t1 can be calculated by the following formula:
[0091] △H rnt1 =H rnt1 -H rnt0 +H 参考t1 -H 参考t0
[0092] In the formula, H rnt1 is the height of the first test point 01 at time t1, H rnt0 is the height of the first test point 01 when the containment of the nuclear power plant is not deformed, H 参考t1 is the height of the reference point at time t1, H参考t0 It is the height of the reference point when the containment of the nuclear power plant does not deform.
[0093] S13: Obtain current pressure information of a second test point on the surface of the nuclear power plant containment vessel.
[0094] Exemplarily, a pressure test sensor may be used to obtain current pressure information of a second test point on the surface of a nuclear power plant containment vessel. The standard pressure information is the pressure value of the second test point 02 when the nuclear power plant containment vessel is not deformed, and the current pressure information may include the pressure value of the second test point 02 at that time. The current pressure information may be detected for the specific deformation of the nuclear power plant containment vessel at the second test point 02 through the fluid flow in the fluid module 100. The pressure change information is the difference between the current pressure information and the standard pressure information.
[0095] In a specific embodiment, the deformation measurement result of the second test point at time t1 can be calculated by the following formula:
[0096] △H (rn-m)t1 =△ Hrnt1 -(△ P（rn-m)t1 -△P （rn-m）t0 ) / (g*ρ 液 )
[0097] In the formula, △H rnt1 is the height of the second test point 02 at time t1, △P （rn-m)t1 is the pressure value of the fluid module at the second test point 02 at time t1, △P （rn-m)t1 is the pressure value of the fluid module at the second test point 02 when no deformation occurs, g is the gravitational acceleration, and ρliquid is the density of the fluid in the fluid module 100.
[0098] S13: Determine the pressure change information of the second test point according to the current pressure information and the standard pressure information, and determine the second deformation information of the second test point according to the pressure change information and the first deformation information. The direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction.
[0099] Exemplarily, the second deformation information is a combination of the deformation of the first test point 01 and the deformation of the second test point 02, for example, when the first test point 01 is deformed, the deformation size of the second test point 02 is based on the deformation of the first test point 01. And when the first test point 01 is not deformed, the deformation size of the second test point 02 is.
[0100] The method for detecting deformation of a nuclear power plant containment shell of the present application is to set a fluid module on the surface of the nuclear power plant containment shell, and the fluid module is filled with fluid. The fluid in the fluid module will flow according to the height difference caused by the deformation of the nuclear power plant containment shell until it reaches a stable state. Then, the image information of the first test point and the reference point on the surface of the nuclear power plant containment shell is obtained, wherein the direction from the first test point to the reference point is the first direction, and the first direction is the direction from the center of the surface to the edge of the surface. The image information can intuitively reflect the actual position of the first test point, and then determine the first deformation information of the first test point according to the image information of the first test point and the reference point, and the actual position of the first test point, so as to determine whether the surface of the nuclear power plant containment shell at the first test point is deformed, and the deformation size and other parameters. Further obtain the current pressure information of the second test point on the surface of the nuclear power plant containment shell. Finally, according to the current pressure information and the standard pressure information, the pressure change information of the second test point is determined, and according to the pressure change information and the first deformation information, the second deformation information of the second test point is determined, and the direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction. The current pressure value of the second test point can be compared with the standard pressure information, and the deformation information at the first test point, combined with the pressure change at the second test point, can be used to analyze whether deformation occurs at the first test point, and the influence of deformation on the fluid flow in the fluid module. Therefore, when the first test point is deformed and causes fluid flow, the influence of the fluid flow caused by the deformation of the first test point on the current pressure value at the second test point can be eliminated, and the pressure change information can be corrected. Further, the second deformation information of the nuclear power plant containment at the second test point can be determined based on the corrected pressure change information. Therefore, it is possible to accurately determine whether the nuclear power plant containment at the second test point is deformed, and the comprehensiveness, accuracy and objectivity of the detection results can be improved. Furthermore, the working state of the nuclear power plant containment can be detected without the need for manual observation, thereby improving the convenience and applicability of the detection.
[0101] In some embodiments, after obtaining the current pressure information of the second test point on the surface of the nuclear power plant containment, before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes:
[0102] S15: used to determine first compensation information according to the image information and the current pressure information of the first test point.
[0103] As an example, see Figure 2 and Figure 3 In the case where the containment shell of the nuclear power plant at the first test point is deformed, the first compensation information is determined based on the flow amount and flow direction of the fluid caused by the deformation of the containment shell of the nuclear power plant at the first test point.
[0104] S16: Determine first compensation pressure information of the second test point according to the first compensation information and the relative position relationship between the first test point and the second test point.
[0105] As an example, see Figure 2 and Figure 3 , when the first test point is deformed and causes fluid flow at the second test point, the change in the amount of fluid at the second test point caused by the deformation of the first test point can be determined based on the positional relationship of the first test point relative to the second test point and the first compensation information. Therefore, the first compensated pressure information is the fluid pressure change information determined based on the change in the amount of fluid at the second test point caused by the deformation of the first test point.
[0106] In some embodiments, after obtaining the current pressure information of the second test point on the surface of the nuclear power plant containment, before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes:
[0107] S15': Determine the second compensation information according to the viscosity of the fluid.
[0108] It should be noted that the viscosity of the fluid is different, and the flow distance of the same fluid outflow and the amount of fluid at different positions are different. In the case of surface deformation of the nuclear power plant containment at the first test point, the second compensation information is determined based on the deformation of the nuclear power plant containment at the first test point and the flow amount and flow direction of the fluid caused by the fluid viscosity.
[0109] S16′: Determine second compensated pressure information of the second test point according to the second compensation information and the current pressure information of the second test point.
[0110] As an example, see Figure 2 and Figure 3 , when the first test point is deformed and causes fluid flow at the second test point, the change in the amount of fluid at the second test point caused by the deformation of the first test point can be determined based on the positional relationship of the first test point relative to the second test point and the second compensation information. Therefore, the second compensated pressure information is the fluid pressure change information determined based on the change in the amount of fluid at the second test point caused by the deformation of the first test point.
[0111] The method for detecting deformation of a nuclear power plant containment shell of the present application can determine the fluid pressure change information according to the change in the amount of fluid at the second test point caused by the deformation of the first test point. The accuracy of the method for detecting deformation of a nuclear power plant containment shell is improved, the influence of the fluid flow caused by the deformation of the first test point on the current pressure value at the second test point is eliminated, the pressure change information is corrected, and the correction effect is improved, so that it can accurately determine whether the nuclear power plant containment shell at the second test point is deformed, and the comprehensiveness, accuracy and objectivity of the detection results can be improved.
[0112] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0113] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A detection device for deformation of a containment vessel of a nuclear power plant, characterized in that: include: A fluid module is arranged on the surface of the containment of the nuclear power plant, and the fluid module is filled with fluid; A first deformation acquisition module, comprising an image acquisition device, for acquiring image information of a first test point and a reference point on the surface of the nuclear power plant containment vessel, wherein the direction from the first test point to the reference point is a first direction, and the first direction is a direction from the center of the surface to the edge of the surface; A first deformation determination module, used to determine first deformation information of the first test point according to the image information; A second deformation acquisition module is used to obtain current pressure information of a second test point on the surface of the containment vessel of the nuclear power plant; A second deformation determination module is used to determine the pressure change information of the second test point according to the current pressure information and the standard pressure information, and to determine the second deformation information of the second test point according to the pressure change information and the first deformation information, wherein the direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction.
2. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 1, characterized in that: The fluid module includes a plurality of sub-fluid modules, each of which is in the shape of a ring; each of the sub-fluid modules in the ring is arranged concentrically with respect to the surface center of the nuclear power plant containment vessel.
3. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 1, characterized in that: The first test points include at least two, and the second test points include at least two; A plurality of the first test points are arranged along the first direction.
4. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 3, characterized in that: The second test points are arranged along the first direction; and / or the second test points are arranged circumferentially along the surface of the nuclear power plant containment vessel.
5. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 4, characterized in that: The first test point and the second test point are arranged circumferentially along the surface of the nuclear power plant containment vessel; the circumferentially arranged test points are equidistantly arranged.
6. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 3, characterized in that: The distance between at least one of the second test points and the center of the surface is equal to the distance between one of the first test points and the center of the surface.
7. The device for detecting deformation of a containment vessel of a nuclear power plant according to claim 1, characterized in that: The first deformation acquisition module includes a pressure detection unit, which is used to detect current pressure information of the first test point, and the first deformation information includes the current pressure information of the first test point and the image information.
8. A method for detecting deformation of a containment vessel of a nuclear power plant, characterized in that: include: The fluid module is arranged on the surface of the containment of the nuclear power plant, wherein the fluid module is filled with fluid; Acquire image information of a first test point and a reference point on the surface of the containment vessel of the nuclear power plant, wherein the direction from the first test point to the reference point is a first direction, and the first direction is a direction from the center of the surface to the edge of the surface; Determining first deformation information of the first test point according to the image information; Acquiring current pressure information of a second test point on the surface of the containment vessel of the nuclear power plant; According to the current pressure information and the standard pressure information, the pressure change information of the second test point is determined, and according to the pressure change information and the first deformation information, the second deformation information of the second test point is determined, the direction from the first test point to the second test point is the second direction, and the first direction intersects with the second direction.
9. A method for detecting deformation of a nuclear power plant containment vessel according to claim 8, characterized in that: After acquiring the current pressure information of the second test point on the surface of the nuclear power plant containment vessel and before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes: Used to determine first compensation information according to the image information and current pressure information of the first test point; First compensation pressure information of the second test point is determined according to the first compensation information and a relative position relationship between the first test point and the second test point.
10. A method for detecting deformation of a nuclear power plant containment vessel according to claim 8, characterized in that: After acquiring the current pressure information of the second test point on the surface of the nuclear power plant containment vessel and before determining the pressure change information of the second test point according to the current pressure information and the standard pressure information, the method further includes: determining second compensation information according to the viscosity of the fluid; Second compensated pressure information of the second test point is determined according to the second compensation information and current pressure information of the second test point.