CN-122006921-A - Ultrasonic flaw detection water nozzle structure and flow channel optimization method thereof

CN122006921ACN 122006921 ACN122006921 ACN 122006921ACN-122006921-A

Abstract

The application provides an ultrasonic flaw detection water nozzle structure and a flow channel optimization method thereof, which comprise the steps of obtaining initial geometric shape data of a flow channel in a water nozzle, extracting key curvature and section change characteristics from the data, determining a potential disturbance area of water flow, simulating water flow speed distribution by adopting a limited volume method according to the extracted curvature and section change characteristics to obtain a stability index of a flowing state, obtaining water flow speed gradient distribution from updated geometric shape data, determining the reduction degree of bubble generation probability by comparing the difference of the front and rear speed gradient distribution, verifying the water flow stability of the updated geometric shape data by adopting a particle image velocimetry technology to obtain a verification index of an actual flowing state, simulating an ultrasonic signal propagation path by adopting a complete water nozzle design model to obtain a quantized value of the signal interference degree, and adjusting the flowing state parameters in the design model according to the quantized value of the signal interference degree to determine the final optimized flow channel shape so as to reduce the interference of bubbles on the signal.

Inventors

SHI WEIWEI
XU BIN
SHAO MENGKE
WU HAITAO
ZHU FEI
YING SHENG

Assignees

南通辰同智能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. The ultrasonic flaw detection water nozzle structure is characterized by comprising a shell, a probe base, a cover plate, a turbulent flow plate and a nozzle assembly; The shell is of a U-shaped structure and comprises a bottom plate, a first side plate and a second side plate, wherein a front cavity is arranged on the outer side surface of the bottom plate of the shell, and a mounting hole communicated with the inner side of the shell is arranged in the front cavity of the bottom plate of the shell; the probe base is arranged on a fixed substrate, and the probe base is arranged on the opening end of the shell through the cooperation of the fixed substrate and the opening end of the shell; The cover plate comprises a side gland, an upper gland, a lower gland and a front gland, wherein the side gland is matched with a side cavity of a first side plate on the shell, the upper gland and the lower gland are respectively arranged on the upper side surface and the lower side surface of the shell, the front gland is matched with a front cavity of the shell, an assembly hole for installing a nozzle assembly is formed in the front gland, the upper gland is provided with a connecting hole communicated with the side cavity on the first side plate, and an air tap is arranged at the connecting hole and used for connecting a water source; The nozzle assembly comprises a spring seat, a spring and a nozzle unit, wherein the spring seat is arranged in an assembly hole of a front cover plate in a circular table shape, a water through hole is formed in the center of the spring seat along the axis direction, the spring is nested on the spring seat, one end of the spring is propped against the surface of the spring seat, the other end of the spring is propped against the nozzle unit, the nozzle unit is arranged at the assembly hole of the front cover plate, one end of the nozzle unit is provided with a taper hole matched with the outer contour of the spring seat, and the nozzle unit is provided with a water spraying hole along the axis direction.
2. The ultrasonic flaw detection water nozzle structure flow channel optimization method is characterized by comprising the following steps of: obtaining initial geometric data of a runner inside the water nozzle, extracting key curvature and section change characteristics from the initial geometric data, and determining a potential disturbance area of water flow; Simulating water flow velocity distribution by adopting a limited volume method according to the extracted curvature and section change characteristics to obtain a stability index of a flow state; Judging whether the stability index of the flowing state is lower than a preset threshold value, and if so, adjusting the curvature parameter of the flow channel aiming at the disorder area to generate updated geometric shape data; Acquiring water flow velocity gradient distribution from updated geometric shape data, and determining the reduction degree of the bubble generation probability by comparing the difference of the velocity gradient distribution before and after the water flow velocity gradient distribution; Adopting particle image velocimetry technology to verify the water flow stability under the updated geometric shape data to obtain a verification index of the actual flow state; Judging whether the verification index meets the signal transmission requirement, if so, integrating the optimized flow channel shape data and the coupling medium parameters to generate a complete water nozzle design model; simulating an ultrasonic signal propagation path through a complete water nozzle design model to obtain a quantized value of the signal interference degree; And adjusting flow state parameters in the design model according to the quantized value of the signal interference degree, and determining the final optimized flow channel shape so as to reduce the interference of bubbles on signals.
3. The method for optimizing a flow passage of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of obtaining initial geometric data of the flow passage inside the water nozzle, extracting key curvature and section change characteristics from the initial geometric data, and determining a potential disturbance area of water flow comprises the steps of: obtaining initial geometric data of a runner in the water nozzle, and carrying out three-dimensional reconstruction on the shape of the runner by a digital modeling tool to obtain complete geometric description of the runner; For the reconstructed geometric description of the flow channel, extracting key curvature characteristics by adopting a curvature analysis method, and determining a region with severe curvature change in the flow channel; extracting a cross section change characteristic from the geometric description of the flow channel, and judging the position with obvious cross section characteristic change through the continuous analysis of the cross section area and the shape; According to the key curvature characteristics and the section change characteristics, combining with the basic principle of fluid mechanics, identifying the area where the water flow characteristics are likely to change, and obtaining the preliminary distribution of the potential disturbance area; Aiming at potential disturbance areas of preliminary distribution, detailed data of local runner shapes are obtained, the areas are subjected to fine modeling through a grid division technology, and the accurate positions of high-risk disturbance areas are determined; and simulating water flow characteristics by adopting a finite element analysis method according to the accurate positions of the high-risk disturbance areas, judging the flow state change of the water flow in the areas, and obtaining the specific conditions and the range of the occurrence of the disturbance.
4. The method for optimizing the flow passage of the ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of simulating the water flow velocity distribution by a finite volume method according to the extracted curvature and section change characteristics to obtain the stability index of the flow state comprises the following steps: Through curvature characteristics and section change data, establishing digital description of the flow channel geometry, acquiring shape distribution information of a key area in the flow channel, and determining a basic frame of the flow channel geometry; According to the basic framework of the flow channel geometry, carrying out preliminary analysis on the water flow speed by adopting a numerical calculation method to obtain the distribution pattern of the speed field; aiming at the distribution pattern of the speed field, obtaining the performance data of the fluid behavior in different areas, judging the local difference of the fluid behavior, and obtaining the primary classification of the flowing state; If the preliminary classification of the flowing state shows that the local difference exceeds a preset threshold value, carrying out layered analysis on the speed field data through an information processing link, and determining the variation range of the stability value; According to the variation range of the stability value, carrying out deep simulation on the key area by adopting a finite volume method, obtaining the details of the fluid state in the simulation result, and judging the stability tendency of the flowing state; Carrying out comprehensive comparison on each region in the flow channel by combining the fluid state details in the simulation result with the state evaluation standard to obtain a final stability evaluation conclusion; If the final stability evaluation conclusion shows that some areas have obvious instability tendency, the geometric data of the flow channel of the areas are extracted through an information processing link, and the key areas of subsequent analysis are determined.
5. The method for optimizing a flow passage of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the determining whether the stability index of the flow state is lower than a preset threshold value, if so, adjusting the curvature parameter of the flow passage for the disturbance area, and generating updated geometric shape data comprises: judging whether the stability index of the flowing state is lower than a preset threshold value or not, and primarily screening the collected fluid data through an information processing link to obtain a judging result of the stability index; if the stability index is lower than a preset threshold, positioning analysis is carried out on the disturbance area, the distribution information of the disturbance area is extracted through an information processing link, and the specific position range of the disturbance area is determined; acquiring related parameter data of the curvature of the flow channel according to the specific position range of the disturbance area, and carrying out layered analysis on the curvature parameter by adopting an information processing link to obtain the adjustment direction of the curvature parameter; Generating a preliminary curvature parameter adjustment scheme aiming at the adjustment direction of the curvature parameter, and performing data verification on the adjustment scheme through an information processing link to determine an adjusted curvature parameter value; updating the geometric data of the runner according to the adjusted curvature parameter value, and reconstructing the geometric data by adopting a digital tool to obtain updated geometric shape information of the runner; For updated geometric shape information of the runner, detecting the integrity of geometric data through an information processing link, and judging whether the geometric data meets a preset standard or not; and if the geometric data accords with the preset standard, storing the updated geometric shape information of the runner into a database through an information processing link, and obtaining a final geometric data record of the runner.
6. The method for optimizing a flow passage of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of obtaining the water flow velocity gradient distribution from the updated geometric shape data, and determining the degree of reduction in the bubble generation probability by comparing the differences of the velocity gradient distribution before and after, comprises: Acquiring gradient distribution information of the water flow speed from the geometric shape data, and carrying out layered analysis on the gradient distribution by adopting an information processing link to obtain gradient distribution characteristics of the water flow speed; according to the gradient distribution characteristics of the water flow speed, specific data of front-back distribution differences are obtained, the difference data are subjected to standardized processing through an information processing link, and the quantized value of the distribution differences is determined; aiming at the quantized value of the distribution difference, if the quantized value exceeds a preset threshold value, carrying out positioning analysis on the difference region through an information processing link to obtain specific range information of the difference region; calculating local adjustment parameters of the water flow speed by adopting a digital tool according to the specific range information of the difference region, and determining a primary scheme of the local adjustment parameters; for the preliminary scheme of the local adjustment parameters, carrying out integrity detection on scheme data through an information processing link, and judging whether the scheme data accords with a preset standard or not; If the scheme data accords with the preset standard, storing the adjustment parameter scheme into a database through an information processing link, and acquiring a final water flow speed adjustment parameter record; And (3) updating the related fluid simulation data by adopting an information processing link according to the final water flow speed adjustment parameter record to obtain an updated fluid simulation result.
7. The method for optimizing a flow channel of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of verifying the water flow stability under updated geometric shape data by using a particle image velocimetry technology to obtain a verification index of an actual flow state comprises the steps of: The method comprises the steps of performing data acquisition on a water flow state with updated geometric shapes through a particle image velocimetry technology, and performing preliminary arrangement on acquired flow image data by adopting an information processing link to obtain an original record of the water flow state; according to the original record of the water flow state, carrying out layering analysis on the image data by adopting an information processing link, obtaining the distribution information of the flow speed, and determining the primary characteristics of the speed distribution; For the preliminary characteristics of the speed distribution, carrying out standardized processing on the characteristic data through an information processing link to obtain key parameters of flow stability, and judging whether the parameters accord with a preset threshold range or not; if the key parameters accord with the preset threshold range, further comparing the flow stability with data through an information processing link to obtain a quantized value of the stability; If the key parameters do not reach the preset threshold range, carrying out positioning analysis on the abnormal region by adopting an information processing link, acquiring the distribution range of the abnormal region, and determining the specific position information of the abnormal region; according to the specific position information of the abnormal region, carrying out deep analysis on the local flow data by adopting an information processing link, obtaining a reference basis for local adjustment, and determining a preliminary scheme of an adjustment direction; and aiming at the preliminary scheme of the adjustment direction, carrying out integrity detection on scheme data through an information processing link, obtaining a detection result, and judging whether the scheme data meets a preset standard.
8. The method for optimizing a flow passage of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the determining whether the verification index meets the signal transmission requirement, if so, integrating the optimized flow passage shape data with the coupling medium parameters to generate a complete water nozzle design model comprises: comparing and analyzing the verification index and the signal transmission data through an information processing link to obtain a judging result, and judging whether the judging result accords with a preset threshold range; if the judging result accords with the preset threshold range, extracting optimization data of the runner shape by adopting an information processing link to obtain structural information of the runner shape; According to the structural information of the runner shape, carrying out data matching on medium parameters of the coupling medium through an information processing link to obtain a matched parameter set; Aiming at the matched parameter set, adopting an information processing link to integrate data, and determining a combined data set of the integrated runner shape and the medium parameters; formatting and sorting data from the joint data set through an information processing link to obtain input data suitable for a design model; Generating a complete model of the water nozzle design by adopting an information processing link according to the tidied input data, and determining a final design output result; and aiming at the final design output result, carrying out data storage through an information processing link to obtain a backup file of the complete model.
9. The method for optimizing a flow channel of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of simulating an ultrasonic signal propagation path through a complete water nozzle design model to obtain a quantized value of a signal interference degree comprises the steps of: loading data of a complete model through a water nozzle design model, and performing preliminary simulation on a propagation path of an ultrasonic signal by adopting an information processing link to obtain an initial result of path simulation; Aiming at an initial result of path simulation, extracting key node data of an ultrasonic signal in a propagation process by adopting an information processing link, and determining the change condition of signal characteristics; According to the change condition of the signal characteristics, analyzing the distribution of signal interference through an information processing link to acquire detailed data of interference analysis; Aiming at the detailed data of interference analysis, carrying out quantization processing on the influence of signal interference by adopting an information processing link to obtain a specific set of quantized value data; according to the specific set of the quantized value data, classifying and sorting the data through an information processing link, and determining a key influence area of signal interference; aiming at a key influence area of signal interference, recording related parameters of a design structure by adopting an information processing link, and acquiring a reference basis for structure adjustment; and generating improved suggestion data for the water nozzle design through an information processing link according to the reference basis of the structural adjustment, and judging the feasibility of the improved suggestion data.
10. The method for optimizing a flow channel of an ultrasonic flaw detection water nozzle structure according to claim 2, wherein the step of adjusting flow state parameters in a design model according to a quantized value of a signal interference degree to determine a final optimized flow channel shape so as to reduce interference of bubbles on signals comprises the steps of: the quantitative data of the signal interference are processed, and an information processing link is adopted to analyze the relevance between the fluid state and the bubble obstruction, so that preliminary distribution data of the fluid state is obtained; According to the preliminary distribution data of the fluid state, the state parameters in the design model are pertinently adjusted by adopting an information processing link, and an adjusted parameter set is determined; updating structural data of the runner geometry through an information processing link aiming at the adjusted parameter set to acquire updated geometry description; According to the updated geometric shape description, carrying out secondary analysis on the fluid state and the signal influence by adopting an information processing link to obtain distribution change data of the signal influence; aiming at distribution change data of signal influence, if the change exceeds a preset threshold value, the geometry of the flow channel is finely adjusted through an information processing link, and the finely adjusted shape data is determined; The design model is integrally updated by adopting an information processing link through the finely-adjusted shape data, and final geometric shape data of the runner is obtained; and generating optimal configuration of the fluid state through an information processing link according to the final geometric shape data of the flow channel, and judging whether the configuration meets the condition of reducing signal interference.

Description

Ultrasonic flaw detection water nozzle structure and flow channel optimization method thereof Technical Field The invention relates to the technical field of ultrasonic flaw detection, in particular to an ultrasonic flaw detection water nozzle structure and a runner optimization method thereof. Background In the field of industrial detection, ultrasonic flaw detection technology is paid attention to because of its characteristics of no damage and high efficiency, and plays a key role in detecting internal defects of complex workpieces. The technology judges whether the material has problems or not through the propagation and reflection of ultrasonic signals, and the precision and the reliability of the technology directly influence the safety and the quality of industrial production. However, in some specific situations, such as using water as a coupling medium for flaw detection, the design of the water nozzle and the influence of the water flow state on signal transmission are not ignored, and become important research directions for improving the detection effect. Currently, although various water nozzles are designed for ultrasonic inspection on the market, there is a common problem in that the water flow is easily disturbed by the internal flow state during the transmission, resulting in unstable signal propagation. Many existing solutions often ignore the complex interactions between the characteristics of the water flow itself and the structure of the device, especially in the dynamic variation of the water flow from inlet to outlet, without effective control of the smoothness of the flow state. This deficiency makes the accuracy of the signals during inspection challenging, especially with high accuracy inspection requirements. Focusing on the technical difficulty, the geometric shape of the hollow runner in the water nozzle is designed to be a core factor influencing the water flow state. Because of the unreasonable shape of the flow channel, the water flow is easy to be disturbed when passing through a narrow or irregular area, and an unstable flow form is formed. This turbulence further exacerbates bubble generation within the water stream, which can interfere with the propagation path of the ultrasonic signal, resulting in signal attenuation or distortion. For example, in some flaw detection scenarios, when water flows suddenly enter a narrow outlet from a wide large channel, the flow speed suddenly changes, turbulence is increased, and bubbles are increased, so that the flaw detection equipment is difficult to capture clear echo signals. Therefore, how to ensure the stable flowing state of water flow before entering the outlet by optimizing the design of the flow passage inside the water nozzle, and reduce the interference of bubbles on signal transmission becomes a key problem for improving the ultrasonic flaw detection precision. The solution to this problem is not only related to the reliability of the detection results, but also directly affects the accuracy of quality assessment of complex workpieces in industrial production. Disclosure of Invention The invention provides an ultrasonic flaw detection water nozzle structure which is characterized by comprising a shell, a probe base, a cover plate, a turbulence plate and a nozzle assembly, wherein the probe base is arranged on the shell; The shell is of a U-shaped structure and comprises a bottom plate, a first side plate and a second side plate, wherein a front cavity is arranged on the outer side surface of the bottom plate of the shell, and a mounting hole communicated with the inner side of the shell is arranged in the front cavity of the bottom plate of the shell; the probe base is arranged on a fixed substrate, and the probe base is arranged on the opening end of the shell through the cooperation of the fixed substrate and the opening end of the shell; The cover plate comprises a side gland, an upper gland, a lower gland and a front gland, wherein the side gland is matched with a side cavity of a first side plate on the shell, the upper gland and the lower gland are respectively arranged on the upper side surface and the lower side surface of the shell, the front gland is matched with a front cavity of the shell, an assembly hole for installing a nozzle assembly is formed in the front gland, the upper gland is provided with a connecting hole communicated with the side cavity on the first side plate, and an air tap is arranged at the connecting hole and used for connecting a water source; The nozzle assembly comprises a spring seat, a spring and a nozzle unit, wherein the spring seat is arranged in an assembly hole of a front cover plate in a circular table shape, a water through hole is formed in the center of the spring seat along the axis direction, the spring is nested on the spring seat, one end of the spring is propped against the surface of the spring seat, the other end of the spring is propped against the nozzle unit, the nozzl