CN-115078549-B - Device and system for detecting weld quality

CN115078549BCN 115078549 BCN115078549 BCN 115078549BCN-115078549-B

Abstract

The embodiment of the invention provides a device and a system for detecting weld quality, belonging to the technical field of welding. The device for detecting the quality of the welding seam comprises a phased array ultrasonic transducer, a processor and a processor, wherein the phased array ultrasonic transducer comprises a plurality of array elements which are annularly arranged and used for transmitting ultrasonic signals and receiving echo signals, any array element in the plurality of array elements responds to the received excitation signals and transmits the excitation signals to the array elements adjacent to any array element until the plurality of array elements all receive the excitation signals, the plurality of array elements sequentially transmit the ultrasonic signals to the welding seam and receive the echo signals corresponding to the ultrasonic signals in response to the received excitation signals, the processor is electrically connected with the phased array ultrasonic transducer and is configured to acquire the echo signals received by the phased array ultrasonic transducer and process the echo signals to finish the quality detection of the welding seam. The invention can reduce the control difficulty of the phased array ultrasonic transducer.

Inventors

FU LING
FENG HUA
OUYANG SHUXUN
Xiang Chuiyue
GUAN YONG

Assignees

中联重科股份有限公司

Dates

Publication Date: 20260508
Application Date: 20220506

Claims (8)

1. An apparatus for weld quality inspection, the apparatus comprising: the phased array ultrasonic transducer comprises a plurality of annularly arranged array elements, a plurality of control units and a plurality of control units, wherein the array elements are used for transmitting ultrasonic signals and receiving echo signals, any one of the array elements responds to receiving an excitation signal and transmits the excitation signal to an array element adjacent to the any one of the array elements until the plurality of array elements all receive the excitation signal, the array elements respond to receiving the excitation signal and sequentially transmit ultrasonic signals to welding seams and receive echo signals corresponding to the ultrasonic signals, and the interval time of transmitting the ultrasonic signals by the array elements is the interval time of receiving the excitation signal by the array elements; A processor electrically connected with the phased array ultrasonic transducer, the processor configured to: acquiring echo signals received by the phased array ultrasonic transducer; processing the echo signals to finish quality detection of the welding seam; The processor is configured to acquire echo signals received by the phased array ultrasonic transducer, and the processor is configured to acquire echo signals of preset time length after each array element in the phased array ultrasonic transducer transmits ultrasonic signals, and take the echo signals of the preset time length as echo signals corresponding to each array element, wherein the preset time length is the interval time of the plurality of array elements receiving the excitation signals.
2. The apparatus of claim 1, wherein the processor being configured to process the echo signal comprises the processor being configured to: Converting the echo signals into point cloud coordinates; sequentially establishing a corresponding space dynamic plane for the point cloud coordinates to determine effective point cloud coordinates; fitting the effective point cloud coordinates to obtain a contour curve of the welding seam.
3. The apparatus of claim 2, wherein the processor, prior to sequentially establishing the corresponding spatial dynamic planes for the point cloud coordinates, is further configured to: And ordering the point cloud coordinates in descending order or ascending order according to three dimensions based on a point cloud dimension-reducing ordering algorithm or a point cloud dimension-ascending ordering algorithm so as to obtain ordered point cloud coordinates.
4. The apparatus of claim 2, wherein the processor being configured to establish the corresponding spatial movement plane for the point cloud coordinates in turn to determine effective point cloud coordinates comprises the processor being configured to: Sequentially determining two adjacent point cloud coordinates which are not collinear with the point cloud coordinates and have the nearest distance; establishing a corresponding space motion plane according to the point cloud coordinates and the two adjacent point cloud coordinates; And determining the point cloud coordinates which are not on the space moving plane and the distance between the point cloud coordinates and the space moving plane is smaller than or equal to a preset distance threshold value as effective point cloud coordinates.
5. The apparatus of claim 1, wherein the apparatus further comprises: And the signal controller is electrically connected with the phased array ultrasonic transducer and is used for sending the excitation signal to any array element.
6. The apparatus of claim 1, wherein the processor is further configured to send the excitation signal to the any one of the array elements.
7. The apparatus of claim 5, wherein the apparatus further comprises: and the display device is electrically connected with the processor and is used for displaying the profile curve of the welding line.
8. A system for weld quality inspection, comprising: The apparatus for weld quality detection according to any one of claims 1 to 7.

Description

Device and system for detecting weld quality Technical Field The invention relates to the technical field of welding, in particular to a device and a system for detecting weld quality. Background Nondestructive testing technology is a basic and important guarantee of modern industry, and in particular, nondestructive testing of the inside and outside of a welded seam (such as a working arm welded seam) is a key for guaranteeing the quality and safety of engineering machinery, and various defects can occur in the actual machining process of each component (such as the working arm) of the engineering machinery due to the influence of various factors, so that the performance of each component of the engineering machinery is reduced or even fails. In addition, the working conditions of the engineering machinery are often under conditions of easy abrasion or corrosion, various damages such as cracks and the like can be easily generated on parts (for example, working arms) of the engineering machinery, and even serious damages can be generated, so that personal safety of operators is damaged. The traditional ultrasonic detection is to analyze and process the collected echo signals according to an ultrasonic flaw detector, so as to obtain defect signals in the welding line. The traditional ultrasonic nondestructive detection has low utilization rate of echo signals inside and outside the working arm, and can only be operated manually to determine the defect position, so that the defects in the welding line can not be identified effectively. Therefore, the present situation is greatly improved by the ultrasonic phased array technology, and the type and the position of the weld defect can be effectively detected by applying the ultrasonic phased array technology to nondestructive detection. However, the ultrasonic phased array technology generally needs to control each array element separately to perform signal excitation, and has a problem of high control difficulty under the condition of a large number of array elements. Disclosure of Invention The embodiment of the invention aims to provide a device and a system for detecting weld quality, which are used for solving the problem that the control difficulty is high when the number of array elements is large in the prior art. To achieve the above object, according to a first aspect of the embodiments of the present invention, there is provided an apparatus for weld quality detection, including: The phased array ultrasonic transducer comprises a plurality of annularly arranged array elements, a plurality of control units and a plurality of control units, wherein the array elements are used for transmitting ultrasonic signals and receiving echo signals, any one of the plurality of array elements responds to the received excitation signals and transmits the excitation signals to the array elements adjacent to any one of the plurality of array elements until the plurality of array elements all receive the excitation signals, and the plurality of array elements responds to the received excitation signals and sequentially transmits ultrasonic signals to a welding seam and receives echo signals corresponding to the ultrasonic signals; A processor electrically connected to the phased array ultrasonic transducer, the processor configured to: Acquiring echo signals received by a phased array ultrasonic transducer; and processing the echo signals to finish the quality detection of the welding seam. In the embodiment of the invention, the interval time of transmitting ultrasonic signals by the array elements is the interval time of receiving excitation signals by the array elements. In an embodiment of the invention, the processor being configured to acquire echo signals received by the phased array ultrasonic transducer includes the processor being configured to acquire echo signals of each array element in the phased array ultrasonic transducer for a preset length of time after transmitting the ultrasonic signals. In the embodiment of the invention, the preset time length is the interval time of receiving the excitation signals by the array elements. In the embodiment of the invention, the processor is configured to process the echo signals and comprises the steps of converting the echo signals into point cloud coordinates, sequentially establishing a corresponding space moving plane for the point cloud coordinates to determine effective point cloud coordinates, and fitting the effective point cloud coordinates to obtain a contour curve of the welding seam. In the embodiment of the invention, the processor is further arranged to sort the point cloud coordinates in descending order or ascending order according to three dimensions respectively based on a point cloud dimension-reducing sorting algorithm or a point cloud dimension-ascending sorting algorithm so as to obtain the sorted point cloud coordinates before sequentially establishing the corresponding space dynamic plane f