CN-121994926-A - Method for detecting weld joint area of chromium-containing coating cladding tube and related device

CN121994926ACN 121994926 ACN121994926 ACN 121994926ACN-121994926-A

Abstract

The application discloses a method and a related device for detecting a welding seam bonding area of a chromium-containing coating cladding tube, and relates to the field of nuclear power, wherein an end plug is welded on the chromium-containing coating cladding tube; and determining the distance between two detection positions corresponding to different endpoints of the welding seam bonding area as the axial length of the welding seam bonding area of the chromium-containing coating cladding tube. The application controls the first ultrasonic sensor to detect the length of the welding seam bonding area, avoids introducing other ultrasonic sensors, can realize the length detection of the welding seam bonding area by utilizing the thin-wall echo signals of the ultrasonic signals, and effectively improves the detection precision.

Inventors

BI HAIBO
LI SIGONG
LI TAO
SUN MAOZHOU
DUAN DELONG
LIAO YEHONG
SU YU
XUE JIAXIANG
CHENG XI

Assignees

中广核铀业发展有限公司
中广核研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20251027

Claims (10)

1. A method of detecting a weld joint of a chromium-containing coated cladding tube, wherein at least one end of the chromium-containing coated cladding tube is welded with an end plug, the method comprising: Moving a first ultrasonic sensor for a plurality of times along the axial direction of the chromium-containing coating cladding tube so as to sequentially move the first ultrasonic sensor to a plurality of detection positions, controlling the first ultrasonic sensor to continuously emit ultrasonic signals in the process of moving along the axial direction, wherein each detection position is sequentially arranged along the axial direction, and the distance between adjacent detection positions is a preset distance, and the preset distance is related to the detection range of the first ultrasonic sensor; After each movement of the first ultrasonic sensor to one of the detection positions, controlling the first ultrasonic sensor to move around a preset angle in the circumferential direction of the chromium-containing coated cladding tube so as to enable the first ultrasonic sensor to move around the chromium-containing coated cladding tube, and controlling the first ultrasonic sensor to continuously emit ultrasonic signals during the movement in the circumferential direction; Detecting a thin-wall echo signal of the ultrasonic signal emitted in the process of moving the first ultrasonic sensor in the axial direction and the circumferential direction, and obtaining a detection result after the first ultrasonic sensor moves to the detection position; If the amplitude of the thin-wall echo signal falls into a preset amplitude range, the detection result after the first ultrasonic sensor moves to the detection position is that the detection position is determined to correspond to one end point of the welding seam combination area; the distance between two detection positions corresponding to different end points of the weld joint region respectively is determined as the axial length of the weld joint region of the chromium-containing coated cladding tube.
2. The method of detecting a weld bond zone of a chromium-containing coated cladding tube according to claim 1, further comprising: Synchronously moving a second ultrasonic sensor and a third ultrasonic sensor and controlling the second ultrasonic sensor and the third ultrasonic sensor to continuously emit ultrasonic signals in the process of moving along the circumferential direction during the process of moving the first ultrasonic sensor, wherein the first ultrasonic sensor, the second ultrasonic sensor and the third ultrasonic sensor are uniformly arranged along the circumferential direction of the chromium-containing coating cladding tube; And determining a detection result of the unfused defect according to at least one of the echo signal of the second ultrasonic sensor and the echo signal of the third ultrasonic sensor.
3. The method for detecting a weld joint area of a chromium-containing coated cladding tube according to claim 2, The ultrasonic emission direction of the second ultrasonic sensor and the radial direction of the chromium-containing coating cladding tube, which is perpendicular to the horizontal plane, are provided with a first preset included angle, the ultrasonic emission direction of the third ultrasonic sensor and the radial direction of the chromium-containing coating cladding tube, which is perpendicular to the horizontal plane, are provided with a second preset included angle, and the first preset included angle and the second preset included angle are different.
4. A method of detecting a weld joint area of a chromium-containing coated cladding tube according to claim 3, wherein said first predetermined angle is 13 degrees and said second predetermined angle is 45 degrees.
5. The method of detecting a weld joint area of a chromium-containing coated cladding tube according to claim 1, wherein said preset distance is smaller than a detection width of said first ultrasonic sensor.
6. The method of detecting a weld joint area of a chromium-containing coated cladding tube according to claim 1, wherein the first ultrasonic sensor is moved around a predetermined angle of 360 degrees in the circumferential direction of the chromium-containing coated cladding tube.
7. A device for detecting a weld joint of a chromium-containing coated cladding tube, wherein at least one end of the chromium-containing coated cladding tube is welded with an end plug, the device comprising: The first moving unit is used for moving the first ultrasonic sensor for a plurality of times along the axial direction of the chromium-containing coating cladding tube so as to sequentially move the first ultrasonic sensor to a plurality of detection positions, controlling the first ultrasonic sensor to continuously emit ultrasonic signals in the process of moving along the axial direction, wherein each detection position is sequentially arranged along the axial direction, and the distance between the adjacent detection positions is a preset distance, and the preset distance is related to the detection range of the first ultrasonic sensor; A second moving unit for controlling the first ultrasonic sensor to move around a predetermined angle in a circumferential direction of the chromium-containing coated cladding tube after each movement of the first ultrasonic sensor to one of the detection positions, so that the first ultrasonic sensor moves around the chromium-containing coated cladding tube, and controlling the first ultrasonic sensor to continuously transmit an ultrasonic signal during the movement in the circumferential direction; the first detection unit is used for detecting thin-wall echo signals of the ultrasonic signals emitted in the process that the first ultrasonic sensor moves in the axial direction and the circumferential direction, and obtaining a detection result after the first ultrasonic sensor moves to the detection position; The end point obtaining unit is used for determining that the detection result after the first ultrasonic sensor moves to the detection position is that the detection position corresponds to one end point of the welding seam combination area when the amplitude of the thin-wall echo signal falls into a preset amplitude range; and a length acquisition unit for determining the distance between two detection positions corresponding to different end points of the welding seam combination area as the axial length of the welding seam combination area of the chromium-containing coating cladding pipe.
8. The device for detecting the weld joint area of a chromium-containing coated cladding tube according to claim 7, further comprising: a third moving unit for synchronously moving a second ultrasonic sensor and a third ultrasonic sensor and controlling the second ultrasonic sensor and the third ultrasonic sensor to continuously emit ultrasonic signals during the movement along the circumferential direction during the movement of the first ultrasonic sensor, wherein the first ultrasonic sensor, the second ultrasonic sensor and the third ultrasonic sensor are uniformly arranged along the circumferential direction of the chromium-containing coating cladding tube; And the second detection unit is used for determining the detection result of the unfused defect according to at least one of the echo signal of the second ultrasonic sensor and the echo signal of the third ultrasonic sensor.
9. An electronic device comprising at least one processor and a memory coupled to the processor, wherein: the memory is used for storing a computer program; The processor is adapted to execute the computer program for enabling the electronic device to carry out the method of detecting a weld joint of a chromium-containing coated cladding tube according to any one of claims 1 to 6.
10. A computer program product comprising computer readable instructions which, when run on an electronic device, cause the electronic device to implement a method of detecting a weld joint region of a chromium-containing coated cladding tube according to any one of claims 1 to 6.

Description

Method for detecting weld joint area of chromium-containing coating cladding tube and related device Technical Field The application relates to the technical field of nuclear power, in particular to a method and a related device for detecting a welding seam bonding area of a chromium-containing coating cladding tube. Background The nuclear fuel rod is a core component for realizing nuclear fission and releasing heat energy in a nuclear reactor, and can comprise a nuclear fuel pellet, a chromium-containing coating cladding tube, end plugs and the like, wherein the nuclear fuel pellet is arranged in the chromium-containing coating cladding tube, and the end plugs seal two ends of the chromium-containing coating cladding tube so as to ensure the complete sealing of the nuclear fuel pellet. At present, the welded sealing of the end plug to the chromium-containing coated cladding tube is generally achieved using a pressure resistance welding technique in which it is required that the weld joint length of the end plug to both ends of the chromium-containing coated cladding tube is greater than 1.3 mm and that no unfused defects are present in the weld joint. In the current detection method of the length of the welding joint region, a plurality of identical probes are adopted to detect the length of the welding joint region and the unfused defects at the same time, and the probes are mutually influenced, so that the detection precision of the length of the welding joint region is lower. Disclosure of Invention In view of the above problems, the present application provides a method and related apparatus for detecting a weld joint region of a chromium-containing coated cladding tube, so as to achieve the purpose of improving the detection accuracy of the length of the weld joint region. The specific scheme is as follows: A first aspect of the present application provides a method of detecting a weld joint area of a chromium-containing coated cladding tube having at least one end plug welded thereto, the method comprising: Moving a first ultrasonic sensor for a plurality of times along the axial direction of the chromium-containing coating cladding tube so as to sequentially move the first ultrasonic sensor to a plurality of detection positions, controlling the first ultrasonic sensor to continuously emit ultrasonic signals in the process of moving along the axial direction, wherein each detection position is sequentially arranged along the axial direction, and the distance between adjacent detection positions is a preset distance, and the preset distance is related to the detection range of the first ultrasonic sensor; After each movement of the first ultrasonic sensor to one of the detection positions, controlling the first ultrasonic sensor to move around a preset angle in the circumferential direction of the chromium-containing coated cladding tube so as to enable the first ultrasonic sensor to move around the chromium-containing coated cladding tube, and controlling the first ultrasonic sensor to continuously emit ultrasonic signals during the movement in the circumferential direction; Detecting a thin-wall echo signal of the ultrasonic signal emitted in the process of moving the first ultrasonic sensor in the axial direction and the circumferential direction, and obtaining a detection result after the first ultrasonic sensor moves to the detection position; If the amplitude of the thin-wall echo signal falls into a preset amplitude range, the detection result after the first ultrasonic sensor moves to the detection position is that the detection position is determined to correspond to one end point of the welding seam combination area; the distance between two detection positions corresponding to different end points of the weld joint region respectively is determined as the axial length of the weld joint region of the chromium-containing coated cladding tube. In one possible implementation, the method further includes: Synchronously moving a second ultrasonic sensor and a third ultrasonic sensor and controlling the second ultrasonic sensor and the third ultrasonic sensor to continuously emit ultrasonic signals in the process of moving along the circumferential direction during the process of moving the first ultrasonic sensor, wherein the first ultrasonic sensor, the second ultrasonic sensor and the third ultrasonic sensor are uniformly arranged along the circumferential direction of the chromium-containing coating cladding tube; And determining a detection result of the unfused defect according to at least one of the echo signal of the second ultrasonic sensor and the echo signal of the third ultrasonic sensor. In one possible implementation, the second ultrasonic sensor has a first preset angle between its ultrasonic emission direction and the radial direction of the chromium-containing coated cladding tube perpendicular to the horizontal plane, and the third ultrasonic sensor has a second preset angle betw