2782 results about "Pressure vessel" patented technology

The invention provides a multi-mode ultrasonic fusion pressure vessel weld defect nondestructive testing method and system, and relates to the technical field of nondestructive testing. According to the method, geometric parameters of a welding seam are obtained through three-dimensional laser scanning, and an optimal scanning parameter set is generated; driving ultrasonic phased array equipment to scan for one time and synchronously acquire shear wave full-matrix capture and longitudinal wave linear scanning data; performing energy flow angular spectrum analysis and envelope analysis on the bimodal data, extracting defect feature parameters and constructing a three-dimensional feature tensor; carrying out multi-dimensional feature fusion by adopting Tucker decomposition, and enhancing a core tensor through physical modeling; generating three types of defect indication diagrams including a defect existence possibility diagram, a defect relative scale diagram and a defect space orientation diagram from the enhanced feature tensor; and the three types of indication diagrams are visually presented for comprehensive interpretation of detection personnel. Through multi-modal data fusion and physical modeling enhancement, the defect identification accuracy and detection efficiency are remarkably improved, the false alarm rate is reduced, and reliable technical support is provided for pressure vessel welding seam safety detection.

The invention discloses internal and external galvanization equipment for a special pressure vessel, and belongs to the technical field of pressure vessel galvanization, the internal and external galvanization equipment for the special pressure vessel comprises a placing mechanism for galvanization of the pressure vessel, the placing mechanism comprises a bottom plate and a lifting frame, and six connecting rods are fixedly mounted on the lifting frame; each connecting rod is provided with two taking and placing mechanisms used for clamping the pressure container to be galvanized. According to the invention, through the arrangement of the multi-station synchronous operation putting-in mechanism, the automatic lifting, translation and descending of the pressure container are realized, so that the galvanizing, unloading and loading processes are continuously carried out, and the production efficiency is greatly improved; according to the pick-and-place mechanism, through alternate driving of a driving triangular wheel and a driven triangular wheel, supporting points of a clamping rod are switched in a staged mode in the galvanization process, it is guaranteed that connecting lugs of a pressure container are not fixedly shielded, and galvanization blind areas are avoided; through cooperation of the compression spring and the lower friction ring, the passive triangular wheel is kept fixed in a non-driving state, and accidental rotation is prevented.

An underdrain filtered water collection system includes: a pair of opposing drainpipes, each drainpipe having a plurality of collection drains; and a diffuser screen. The diffuser screen can slide within an outlet in each of the collection drains. A diffuser screen for a pressure vessel containing filter media includes: a screen pipe; a solid plate coupled to a base of the screen pipe; and a winged diffuser arranged around an outer circumference of the solid plate. The winged diffuser includes a plurality of foldable wings. The screen pipe includes a mesh screen having preconfigured interstices therethrough. Feed water flows through the screen pipe where it is directed by an inner surface of the solid plate to flow in a diffused flow through the interstices of the mesh screen and the wings.

The present application discloses a method and system for identifying internal surface defects of a nuclear reactor pressure vessel, a computer device, and a computer-readable storage medium. The method comprises: collecting image data of the surface of a pressure vessel; constructing an illumination angle attention mechanism, using an image in a data set to establish a feature map, and producing a spatial attention map on the basis of a spatial relationship of the feature map; and using the illumination angle attention mechanism to improve a YOLOv5 model, and identifying surface defects of the pressure vessel by means of the improved YOLOv5. The present application has the characteristics of high defect identification efficiency, low missed detection rate, etc. The present application can effectively cope with common problems when defect detection is performed under different illumination conditions. This precise defect localization and identification capability is critical for ensuring safe operation of pressure vessels, particularly during routine maintenance and inspection.

The invention relates to the technical field of intelligent diagnosis, in particular to a pressure vessel health monitoring method based on an intelligent algorithm, which comprises the following steps: acquiring pressure, stress and temperature data in real time by using a sensor array, calculating a track evolution parameter set, identifying a damaged area, detecting a fault event, and predicting a health state and residual service life. And establishing a damage grade classification framework, and obtaining a damage grade classification result. According to the method, through multi-source data real-time acquisition and spatial gradient refining processing, by using a pressure and stress distribution coupling relation, accurate damage positioning is realized, the anomaly detection sensitivity is improved, damage boundary coordinates are marked, the expansion rate of adjacent damage areas is quantified, and phase delay is judged in combination with a multi-period pressure track; fault recognition stability is enhanced, abnormal event classification precision is optimized, a material fatigue accumulation and pressure uniformity correlation means is adopted, health score attenuation observation is enhanced, health state quantification depth is improved, and life prediction reliability is expanded.

The invention discloses an in-situ global foreign matter checking and grabbing system for reactor internals on the lower portion of a reactor. The in-situ global foreign matter checking and grabbing system for the reactor internals on the lower portion of the reactor comprises a base device, an adjusting device and a foreign matter grabbing device. The foreign matter grabbing device is arranged on the base device through the adjusting device. The foreign matter grabbing device comprises a flexible arm assembly, a flexible arm driving assembly, a quick change assembly, at least one clamping jaw used for grabbing foreign matter and a video tracking and checking assembly used for searching the foreign matter and monitoring the grabbing condition. The flexible arm assembly is arranged on the adjusting device; the at least one clamping jaw is detachably arranged on the flexible arm assembly through the quick-change assembly; the video tracking and checking assembly is arranged on the adjusting device; according to the invention, the flexible arm assembly carries various types of clamping jaws to carry out automatic grabbing operation, so that the in-service nuclear power plant reactor internals can accurately, efficiently and safely grab and clean foreign matters in the in-situ interior of a pressure vessel in a whole region.

The invention discloses a manufacturing method of a high-efficiency and low-cost steel plate for a 345MPa-grade low-temperature pressure vessel, and belongs to the technical field of low-carbon microalloyed steel production. The manufacturing method comprises the steps of molten steel smelting, LF refining, RH vacuum degassing, continuous casting, casting blank heating, rolling, controlled cooling and straightening. The problems that steel plate rolling efficiency is low, rolling resistance is large, and the plate shape is not easy to control are solved, the steel plate is low in cost, high in strength and toughness and high in straightness, and the service safety of the steel plate for the low-temperature pressure container can be guaranteed.

Disclosed herein is an aircraft with engines positioned so as to avoid damage to other components of the aircraft. The aircraft may include a blended wing body aircraft. The engines may be positioned aft of a pressure vessel of the aircraft. The engines may be positioned aft of and / or above a fuel store of the aircraft. Such engine positioning may reduce the likelihood of damage to a pressure vessel and / or fuel store in the event of engine failure.

The invention discloses a pressure vessel inner circular seam welding device and an inner circular seam welding method, and relates to the technical field of pressure vessel inner circular seam welding. The pressure vessel inner girth welding device comprises a left fixing table and a right fixing table which are used for preliminarily fixing a pressure vessel shell. And the annular clamping unit comprises an outer clamping assembly and an inner clamping assembly, and the outer clamping assembly and the inner clamping assembly can apply opposite clamping force in the radial direction to the shell from the inner side and the outer side of the shell correspondingly. By arranging the connecting structure, the welding unit can drive the annular clamping unit to synchronously act in the process of entering the shell and aligning to a welding seam, so that efficient cooperation of clamping and welding operation is realized; the annular clamping unit synchronously applies clamping force which is close to each other in the radial direction of the shell from the inner side and the outer side of the shell through the outer clamping assembly and the inner clamping assembly, and therefore bidirectional stable clamping of the end of the shell is achieved.

The invention relates to the technical field of safety monitoring of a nuclear reactor, and particularly discloses a multi-region pressure overrun leakage monitoring method for a reactor pressure vessel. The method comprises the steps of multi-region pressure data acquisition, real-time pressure field model construction, dynamic pressure field baseline modeling, pressure overrun anomaly detection, leakage source accurate positioning and evaluation based on spatial gradient analysis, topological structure mapping and multi-sensor data fusion, and graded early warning and response. By the adoption of the technical scheme, real-time and fine monitoring of pressure distribution in the reactor pressure vessel can be achieved, the rapid and accurate judgment and positioning capacity of leakage events is improved, the operation safety and reliability of nuclear power facilities are enhanced, and the reliability of the nuclear power facilities is improved. The defects of independent monitoring, local accurate positioning and complex working condition adaptability of multi-region pressure over-limit leakage in the prior art are overcome.

The invention provides a pressure vessel full life cycle stress fatigue assessment and predictive maintenance system based on digital twinning. The system comprises a model construction module used for constructing a three-dimensional digital twinning model corresponding to a solid pressure vessel; the data synchronization module is used for integrating historical test data and actual operation load data of the solid pressure vessel into the three-dimensional digital twinborn model and simulating dynamic stress distribution of the solid pressure vessel in an actual operation load process; the evaluation and maintenance module is used for evaluating the accumulated fatigue damage of the solid pressure vessel and the residual fatigue life in the current state based on the dynamic stress distribution, and determining a potential risk area and a risk time window of the solid pressure vessel based on an evaluation result; and on-demand inspection plans and predictive maintenance strategies of the entity pressure vessels are generated based on the potential risk areas and the risk time windows. Stress fatigue evaluation of the whole life cycle is achieved, and the accuracy and reliability of life prediction are remarkably improved.

The invention discloses a detection alarm method and system for detecting surface defects of a pressure vessel, and relates to the field of surface defects of the pressure vessel, and the method comprises the following steps: obtaining sound wave reflection information of the surface of the pressure vessel, and identifying a defect area existing on the surface of the pressure vessel based on the sound wave reflection information; judging the characteristic state of the surface defect of the pressure vessel by combining the sound wave reflection intensity; combining the characteristic state with a stress elastic-plastic analysis technology to obtain damage modes of different position points in the surface defect area of the pressure vessel, and determining a damage characterization parameter and a damage evolution rule according to the damage modes; and according to the damage characterization parameter and the damage evolution law, evaluating a risk value of leakage of the pressure vessel, generating an alarm prompt based on the risk value, and sending the alarm prompt to a management terminal to perform pressure vessel risk management and control. According to the method, the damage state of the container can be accurately described, the future performance degradation of the container can be predicted, and early warning is facilitated.

The utility model relates to a high-purity red phosphorus production device which comprises a stainless steel sealed pressure container, an infrared electric heater is arranged in the stainless steel sealed pressure container, an outer-layer high-purity quartz tube is arranged in the infrared electric heater, an inner-layer high-purity quartz tube is arranged in the outer-layer high-purity quartz tube, and an inner-layer high-purity quartz tube is arranged in the inner-layer high-purity quartz tube. Two ends of the inner layer high-purity quartz tube are closed, through holes are formed in the circumferential surface of the inner layer high-purity quartz tube, one end of the outer layer high-purity quartz tube is closed, and the other end of the outer layer high-purity quartz tube is provided with an opening which is hermetically connected with a stainless steel tube joint which is respectively connected with a nitrogen system and a vacuum system after extending out of an end socket of the stainless steel sealed pressure vessel; the stainless steel sealed pressure container is further provided with a nitrogen charging and discharging port which is connected with a nitrogen system. According to the utility model, the nested inner-layer high-purity quartz tube and the nested outer-layer high-purity quartz tube are adopted, discharging is carried out in the inner-layer high-purity quartz tube, red phosphorus is convenient to take out, nitrogen is filled inside and outside the outer-layer high-purity quartz tube, pressure balance inside and outside the outer-layer high-purity quartz tube is kept, and safety is ensured.

The utility model relates to a horizontal assembly clearance control device for a large pressure vessel, which comprises a locking screw, a tensioning plate, a clearance cushion block, a bolt, a locking bolt, a limiting bolt, a compression bolt, a guide positioning pin, an elastic locking clamp, a rear cover assembly and a shell, and the tensioning plate is matched with the clearance cushion block to control the assembly clearance; the gap cushion block is completely and tightly attached to the shell, the tensioning plate is arranged in a clamping groove of the gap cushion block, the advancing distance of the tensioning plate can be limited by screwing down the pressing bolt, and the gap between the rear cover assembly and the shell is controlled. The locking screw and the locking bolt are respectively inserted into corresponding positions of the gap cushion block through the bolt, so that the locking screw and the locking bolt are firmly connected; the limiting bolt is inserted into the limiting holes of the tensioning plate, the shell and the rear cover assembly in a penetrating mode, it is guaranteed that the tensioning plate, the shell and the rear cover assembly are coaxial in the assembling process, and displacement of the tensioning plate is prevented. The tool is simple and reliable in structure, high in bearing capacity, low in price, convenient to operate and good in using effect.

This disclosure includes compressed-gas fuel system cabinets, each having a frame and a cover coupled together via fasteners to support and contain compressed-gas fuel system components, such as fuel pressure vessels. The frame, cover, and / or fasteners can be configured to facilitate assembly of the cabinet—in terms of safety and / or speed—and / or access to or servicing of the components contained within the cabinet.

The invention discloses a pressure vessel lower chamber model order reduction method combining sparse grids and POD, and the method comprises the steps: adding one to the grade of the sparse grids after iteration initialization, and obtaining test grid points according to important grid points; executing the lower chamber full-order computational fluid mechanics model corresponding to the test grid points to obtain a first snapshot; reconstructing a second snapshot by using the mapping relation and the POD modal matrix; calculating a root-mean-square error of the two snapshots, and if the root-mean-square error is smaller than a threshold value, completing construction of a reduced-order model Otherwise, the grid points with the errors meeting the requirements are stored in a non-important grid point set, the grid points which do not meet the requirements are marked as important grid points, and the snapshot matrix is updated. Performing singular value decomposition on the snapshot matrix, updating the mapping relation, judging whether the maximum sparse grid grade is reached or not, and continuing iteration if the maximum sparse grid grade is not reached. According to the method, the field distribution of the thermal hydraulic parameters in the lower chamber can be quickly obtained through matrix algebraic operation, and the method can be used for application scenes such as parameterization analysis, design optimization and digital twinning.

The invention provides a reactor pressure vessel flange sealing surface defect measuring method and a reactor pressure vessel flange sealing surface defect repairing method. The measuring method comprises the following steps: S1, measuring and calculating the minimum diameter and the maximum diameter of an annular band formed in a sealing ring indentation range; and S2, by taking the center of the container flange as a circle center, inspecting the defect, falling into the range of the annular belt between the minimum diameter and the maximum diameter, on the container flange, and measuring and recording the size and the orientation of the defect. According to the method, corresponding recommended repair methods are provided according to repair criteria for defects of different scales, the method can be used for guiding implementation of nuclear power plant RPV sealing surface maintenance, the repair workload is effectively reduced, the radiation dose of personnel is reduced, the operation and maintenance efficiency is improved, safe and stable operation of a nuclear power unit is ensured, and the economic benefit of power station operation is improved.

The invention discloses a pressure vessel steel plate blanking plasma cutting machine, and relates to the technical field of integrated stamping, the pressure vessel steel plate blanking plasma cutting machine comprises a machine table and a bearing frame slidably mounted on the machine table, a grating is fixed on the machine table, and the pressure vessel steel plate blanking plasma cutting machine further comprises sliding seats slidably mounted on the two sides of the machine table; the two sliding seats are connected through a rectangular rod, a sliding table is slidably installed on the rectangular rod, a lifting plate is slidably installed on the side, facing the bearing frame, of the sliding table, a cutting gun is fixed to the lifting plate, a lower pressing tool is slidably installed on the bearing frame, and the two sides of the lower pressing tool are each fixedly provided with two guide rods. Directional transfer work in a high space is achieved through cooperation of the rolling turning assembly and the telescopic part, namely, transfer from a point A to a point B is achieved, the positions of the point A and the point B are changed along with movement of the sliding table and the cutting gun all the time, but the path from the point A to the point B is not changed, and therefore any material plate cut by the cutting gun can rotate to the lower pressing tool, and the cutting efficiency is improved. Stamping is completed through downward pressing of the follow-up frame.

The invention discloses a stress monitoring method for a digital twin-driven pressure vessel. The method is divided into an offline stage and an online stage. The purpose of the offline stage is to establish a mapping model of container structure parameters, coordinate positions and stress results so as to quickly obtain a global stress result simulation value; in the online stage, a stress value is calculated by collecting real-time strain of a local position, the deviation between a simulation result and an actual measurement result of a corresponding measuring point position is evaluated, and a mapping model among a load, a coordinate position and global stress deviation is established; in the real-time transmission process of actual measurement result data, the stress deviation output in the online stage is used for correcting the stress result in the offline stage in real time, and the global twinning stress value of the pressure vessel is obtained. The invention provides a new way for comprehensively and accurately monitoring the stress distribution of the loaded pressure vessel, and provides technical support for safety performance evaluation of the pressure vessel serving in a long-term harsh working condition.

The embodiment of the invention provides an intelligent safety early warning system for a pressure vessel, and the system comprises a multi-source data collection module which is used for obtaining the data of a pressure vessel body and safety accessories in real time; the edge calculation module is used for executing anomaly detection; the cloud analysis module is used for predicting the residual life according to the abnormal risk level and generating a maintenance strategy; and the early warning feedback module is used for triggering an alarm or executing a safety control action according to the abnormal risk level. According to the system, through a dynamic threshold correction mechanism and multi-source data fusion analysis, sudden abnormity and long-term deterioration risks are recognized in real time, the safety early warning precision is remarkably improved, the false alarm and missing report rate is reduced, and the intelligent safety management and control requirement under the complex working condition is met.

The invention discloses a pressure vessel inner diameter on-line detector comprising a pressure vessel body, and the inner wall of the pressure vessel body is provided with a measuring assembly used for measuring the inner diameter of the pressure vessel body. The measuring assembly comprises a detection plate mounted on one side of the inner wall of the pressure vessel body and measuring ropes which are linearly arranged and mounted in the detection plate and are fixed on the inner wall of the pressure vessel body in a surrounding manner; the two ends of the measuring rope are provided with connecting assemblies used for inserting and fixing, the two ends of the inner wall of the detection plate are provided with mounting assemblies used for being matched with the connecting assemblies for fixing, and the bottom of the inner wall of the detection plate is provided with a capacitor assembly used for adjusting current. Through the arranged detection plate and the measuring rope, the inner diameter of the pressure vessel body can be calculated through the length of the measuring rope and the length of the side, attached to the pressure vessel body, of the detection plate, a user can know the deformation of the inner diameter of the pressure vessel body in time for overhauling, and damage caused by uneven stress of the pressure vessel body is avoided.

The invention discloses a fiber winding composite material pressure vessel defect evaluation method based on ultrasonic detection, and particularly relates to the technical field of defect evaluation, which comprises the following steps: simplifying a fiber winding structure into a net structure based on attribute difference and interaction relationship between fiber and resin; modeling is conducted by considering the resin filling position and the interaction relation between resin and fibers, the ultrasonic frequency, the pulse width, the excitation point position and the receiving point position transmitted by equipment are calibrated on the basis of a simulation model and applied to an actual container, a phased array is used for transmitting a pulse signal at a preset excitation point, and the signal is received at a preset receiving point; based on different incident angles of the pulse signals, ultrasonic echo data fully covered at the receiving point are collected, an incident angle evaluation model is constructed, incident angle evaluation coefficients at different ultrasonic incident angles at the excitation point are generated, and the optimal incident angle at the excitation point is obtained. The surface defect identification method is beneficial to surface defect identification, and the defect detection capability is enhanced.

The invention relates to the technical field of pipeline supports, and discloses a pressure vessel pipeline supporting device. During working, firstly, one end, deviating from a guide piece, of a guide rod penetrates through a supporting plate and then is fixed through a locking piece, the fixing position of the locking piece is adjusted, and then an adjusting elastic piece is adjusted; the adjusting elastic piece applies pre-tightening force between the guiding piece and the supporting plate, and then the adjusting sleeve is installed on the adjusting rod in a matched mode. The guiding piece is installed on the outer wall of the pressure container in an abutting mode, so that a pipeline on the pressure container is arranged in the inner ring buckle, then the outer ring buckle is installed on the inner ring buckle in a buckled mode and fixed, and auxiliary supporting and stabilizing of the pipeline are completed. By adjusting the position of the locking piece, the compression degree of the adjusting elastic piece can be changed, and therefore the supporting force of the supporting and guiding assembly on the pressure container is adjusted. The supporting device can be dynamically adjusted in severe weather, supporting looseness is prevented, and the stability of pipelines of a top-heavy structure such as a pressure guiding pipe fitting on the pressure container is improved.

The invention relates to the technical field of inspection and detection, and discloses a safety interlocking device of a quick-opening container and a detection method and device of a container control cabinet. A detection device composed of a power supply circuit, a main controller, a liquid crystal screen, a pressure main adjusting module, a pressure auxiliary adjusting module, a pressure transmitter signal simulation module, a zero-pressure controller signal simulation module, a storage module, a gas exhauster, a pressure sensor and the like is adopted, and a pressure container or / and a safety interlocking device can be detected. Therefore, when the quick-opening-door container is in a shutdown state, the quick-opening-door safety interlocking device can be subjected to safety and reliability verification, meanwhile, the control logic of the container control cabinet is verified, the blank of related detection is filled, and the safety and reliability of the quick-opening-door pressure container are improved.

The invention discloses a digital twinborn model construction and life prediction method for pressure vessel defect data, and belongs to the technical field of pressure vessel safety assessment, and the method comprises the following steps: a defect topological graph construction and feature extraction step: converting defect space distribution into a graph structure, and extracting features by adopting a graph attention network; a crack propagation physical constraint modeling step: predicting a defect propagation behavior by adopting a physical information constraint neural network; an uncertainty quantification and reliability evaluation step: calculating a confidence interval and a failure probability of the residual life by adopting a Monte Carlo Dropout method; the model parameters are dynamically adjusted through an online learning mechanism, high-precision real-time prediction of defect evolution and reliability evaluation of the residual life are achieved, and the calculation efficiency is improved by more than two orders of magnitude compared with a traditional finite element method.

According to one embodiment of the present disclosure, a vacuum circuit breaker may include: a pressure vessel filled with an insulating gas of a predetermined pressure; a vacuum interrupter provided inside the pressure vessel and having a fixed electrode and a movable electrode in a vacuum tube in a vacuum state; a bellows provided to seal a gap between the vacuum tube and the movable electrode; a movable rod, one end of which is connected to an end portion of the movable electrode via an insulating link, and which is capable of penetrating the pressure vessel and reciprocating in an axial direction while maintaining airtightness; a drive rod which is provided outside the pressure vessel at the other end of the movable rod and which transmits the driving force of the drive unit to the movable rod; and a contact pressure spring, one end of which is supported by the movable rod and the other end of which is supported by the driving rod, in which a ratio of a self-closing force of the vacuum interrupter to a minimum closed contact pressure is set to a predetermined ratio.

The invention relates to the technical field of sealing performance detection, in particular to a pressure vessel-oriented leakage detection method, device and system, and the method comprises the steps: respectively obtaining the acoustic emission signals of each detection sensor on the outer wall surface of a pressure vessel and a guard sensor right above the detection sensor, and the liquid level height at each moment; judging the appearing acoustic emission event; obtaining each event set and a noise interference degree corresponding to the event set, and dividing the event sets into a noise event set and a non-noise event set; and determining a sound source estimation value and a liquid drop estimation value to obtain a modal decomposition layer number, performing signal reconstruction on all modal components corresponding to non-noise through modal decomposition, and positioning the leakage position of the pressure vessel. According to the method, the number of decomposition layers of the modal decomposition algorithm is dynamically adjusted, insufficient decomposition or excessive decomposition of the mode of the acoustic emission signal is avoided, the filtering effect on the acoustic emission signal is improved, and the leakage point of the pressure vessel can be positioned more accurately.

The invention discloses a reactor lower internals reactor core supporting plate global foreign matter video inspection grabbing device which comprises a rack, a video inspection device and a foreign matter grabbing device, a positioning pin is arranged at the bottom of the rack, and a containing groove used for storing foreign matter is further formed in the rack; the video inspection device is movably installed on the rack in the height direction and comprises a video inspection mechanism used for conducting foreign matter video inspection. The foreign matter grabbing device is movably installed on the rack in the height direction and comprises a foreign matter grabbing mechanism used for grabbing foreign matter. By applying the video inspection and grabbing equipment for the global foreign matters on the reactor core supporting plate of the reactor lower reactor internals, the foreign matters on the reactor core supporting plate can be inspected and grabbed when the reactor internals are in situ, the damage to the components and a pressure vessel body caused by hoisting of the reactor internals can be effectively avoided, the steps of hoisting of the reactor internals and the like are reduced, and the production efficiency is improved. And the overall foreign matter checking and grabbing operation efficiency can be effectively improved.

The invention relates to the technical field of intelligent manufacturing equipment industry, in particular to a pressure vessel deformation online detection system which comprises a working condition data acquisition module, a boundary adjustment calculation module, a fluid-solid stress transfer module, a stress deformation updating module and a deformation risk assessment module. According to the method, wall surface temperature, local strain, external load and shear stress gradient data are collected in real time, a multi-physical-quantity correlation model is constructed, deformation data integrity is improved, stress state calibration is optimized, the stress boundary of a shell connection area is accurately adjusted, fluid-solid interface stress distribution is calculated, stress change perception is improved, and a deformation quantity adjustment strategy is optimized; the deformation overrun area is positioned; the structure risk early warning capability is enhanced; the data collaborative analysis is realized; the monitoring parameters are dynamically adjusted;

The invention relates to a thick-wall pressure vessel inner wall damage detection method based on a low-frequency ultrasonic phase control imaging algorithm, which comprises the following steps: calculating to obtain an ultrasonic Lamb wave frequency dispersion curve of a thick-wall plate-shaped structure, and selecting a low-frequency guided wave frequency; determining parameter configuration of array elements of the phased array according to the low-frequency guided wave frequency, and arranging the array elements on the outer wall of the pressure vessel; exciting a low-frequency Lamb wave signal, and collecting FMC data through phased array elements, including echo signal data of each array element; frequency dispersion compensation processing is carried out on the acquired FMC data, and a phase coherence factor of each imaging pixel point is calculated; and adopting a TFM (Time Frequency Modulation) algorithm based on phase coherence factor weighting to carry out delay weighted reconstruction on the compensated FMC data to obtain an imaging and positioning result of the damage defect of the inner wall of the pressure vessel. Compared with the prior art, the problems of guided wave propagation frequency dispersion effect, complex mode, low signal-to-noise ratio and the like can be solved, and high-precision imaging positioning of inner wall damage defects is realized.