CN-121978209-A - Phased array ultrasonic detection device and automatic scanning system suitable for small-diameter pipe girth weld

CN121978209ACN 121978209 ACN121978209 ACN 121978209ACN-121978209-A

Abstract

The invention provides a phased array ultrasonic detection device and an automatic scanning system which are suitable for girth welds of small-diameter pipes. The automatic scanning system comprises a scanning frame, a path monitoring module, a coupling device, a driving device and a control device, wherein the scanning frame comprises a cross rod and two probe clamping mechanisms arranged on the cross rod, the path monitoring module comprises an industrial camera, the industrial camera is arranged on the cross rod and can be used for carrying out angle adjustment and monitoring a scanning path in real time, the coupling device can be used for conveying a coupling agent to a probe, the driving device is connected with the scanning frame and can walk, and the control device can control walking of the driving device. The detection device comprises the automatic scanning system and the phased array ultrasonic detection instrument. According to the invention, the requirements of stable coupling and uniform scanning are ensured, the two probes are symmetrically arranged on two sides of the welding line for scanning simultaneously, the scanning path is monitored in real time by means of an industrial camera, the scanning track is corrected by remote control, and the scanning precision is ensured.

Inventors

Xia Junzi
HAN BIN
LI CHANG
Niu Shengyuan

Assignees

中国石油大学(华东)

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. A phased array ultrasonic detection automatic scanning system suitable for a small-diameter pipe girth weld is characterized by comprising a scanning frame, a path monitoring module, a coupling device, a driving device and a control device, wherein, The scanning frame comprises a cross rod and two probe clamping mechanisms arranged on the cross rod, wherein the two probe clamping mechanisms can respectively fix one probe, and the girth weld is positioned at the center of the two probes; the path monitoring module comprises an industrial camera which is arranged on a cross rod of the scanning frame and can be used for carrying out angle adjustment and monitoring a scanning path in real time; the coupling device can convey the couplant to the probe; The driving device is connected with the scanning frame and can walk; the control device can control the travel of the driving device.
2. The phased array ultrasonic detection automatic scanning system for adapting to the girth weld of the small diameter pipe according to claim 1, wherein the transverse rod is provided with a graduated scale and a chute; The scanning frame further comprises a sliding rail module, wherein the sliding rail module is arranged in the sliding groove and can adjust the positions of the two probe clamping mechanisms through movement, so that the girth weld is positioned at the center of the two probes.
3. The phased array ultrasonic detection automatic scanning system adapting to the girth weld of the small diameter pipe according to claim 1, wherein the scanning frame further comprises a travelling mechanism and an elastic mechanism, The travelling mechanism comprises a bracket and a travelling pulley, one end of the bracket is arranged in the middle of the cross rod, and the travelling pulley is arranged at the other end of the bracket; The number of the elastic mechanisms is 2 and corresponds to two clamping mechanisms one by one, and two ends of each elastic mechanism are respectively connected with the cross rod and the corresponding probe clamping mechanism and can apply radial positive pressure to the probe clamping mechanism so as to enable the probe to cling to the outer wall of the small-diameter tube.
4. The automated phased array ultrasonic inspection scanning system of claim 1, wherein the scanning rack further comprises a first mounting adapter interface mounted in a central location of the cross bar for adapter connection to the drive.
5. The automatic scanning system for phased array ultrasonic detection of adapting to girth welds of small diameter pipes according to claim 1, wherein the path monitoring module further comprises a first clamping mechanism, an angle adjusting mechanism and a second clamping mechanism which are sequentially connected, the first clamping mechanism is arranged on the cross rod, the second clamping mechanism is used for fixing the industrial camera, and the industrial camera is connected with the phased array ultrasonic detection instrument through a network port.
6. The automated phased array ultrasonic inspection scanning system adapted to girth welds of small diameter pipes of claim 5, wherein the angle adjustment mechanism comprises a ball chain structure.
7. The phased array ultrasonic detection automatic scanning system adapting to the girth weld of the small-diameter pipe according to claim 1, wherein the coupling device is controlled by an automatic water injection system, the coupling device is provided with a switch key and a pressure regulating knob and adopts a water tank as a water source, the coupling device is connected with a water spraying hole at a wedge block of a probe, the probe is stably and continuously conveyed with a couplant, and the input water pressure of the couplant can be regulated at any time.
8. The phased array ultrasonic detection automatic scanning system adapting to the girth weld of the small diameter pipe according to claim 1, wherein the driving device comprises an encoder and a magnetic attraction wheel, wherein, The encoder is connected with the phased array ultrasonic detection instrument and can record the path and the walking data of the magnetic attraction wheel; The magnetic attraction wheel can be adsorbed on the outer wall surface of the pipe diameter.
9. The phased array ultrasonic detection automatic scanning system for adapting to the girth weld of the small diameter pipe according to claim 1, wherein the control device comprises a control box and a remote controller; The control box controls the driving device through a control line and is provided with a power key and an emergency stop key; The remote controller realizes remote control of the driving device through the signal transmitter and the signal receiver.
10. The phased array ultrasonic detection device suitable for the girth joint of the small-diameter pipe is characterized by comprising the phased array ultrasonic detection automatic scanning system suitable for the girth joint of the small-diameter pipe and a phased array ultrasonic detection instrument according to any one of claims 1 to 9, wherein the industrial camera is connected with the phased array ultrasonic detection instrument through a network port, and two probes of the phased array ultrasonic detection instrument can be respectively fixed on two probe clamping mechanisms.

Description

Phased array ultrasonic detection device and automatic scanning system suitable for small-diameter pipe girth weld Technical Field The invention relates to the technical field of nondestructive testing, in particular to a phased array ultrasonic testing automatic scanning system and a phased array ultrasonic testing device which are suitable for small-diameter pipe girth welds. Background Phased array ultrasonic testing is one of the important means of inspecting weld quality during manufacturing, installation and periodic inspection of gathering and transportation pipelines. The small-diameter pipe in the gathering and transportation pipeline is widely applied, but the phased array ultrasonic detection of the existing small-diameter pipe generally adopts a manual chain type scanning frame, so that unstable coupling is easy to occur, the scanning speed is uneven, the acquisition precision of an encoder is influenced, the greatest problem is that the track is offset during scanning, the accuracy of a detection result is influenced, and the manual chain type scanning frame cannot meet the condition that double probes are symmetrically placed on two sides of a welding seam for simultaneous scanning. Therefore, the automatic scanning of the girth weld of the small-diameter pipe is of great significance. Disclosure of Invention The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, one of the purposes of the invention is to solve the problems of track deviation, low detection accuracy and the like caused by manual scanning of phased array ultrasonic detection. In order to achieve the purpose, the invention provides a phased array ultrasonic detection automatic scanning system suitable for the girth weld of the small-diameter pipe. The system comprises a scanning frame, a path monitoring module, a coupling device, a driving device and a control device, wherein the scanning frame comprises a cross rod and two probe clamping mechanisms arranged on the cross rod, the two probe clamping mechanisms can respectively fix one probe, a girth weld is positioned at the center of the two probes, the path monitoring module comprises an industrial camera, the industrial camera is arranged on the cross rod of the scanning frame and can conduct angle adjustment and is used for monitoring a scanning path in real time, the coupling device can convey a coupling agent to the probes, the driving device is connected with the scanning frame and can walk, and the control device can control walking of the driving device. Optionally, a graduated scale and a chute are arranged on the cross rod. Optionally, the scanning frame further comprises a sliding rail module, wherein the sliding rail module is arranged in the sliding groove and can adjust the positions of the two probe clamping mechanisms through movement, so that the girth weld is positioned at the center of the two probes. Optionally, the scanning frame further comprises a travelling mechanism and elastic mechanisms, wherein the travelling mechanism comprises a bracket and a travelling pulley, one end of the bracket is arranged at the middle position of the cross rod, the travelling pulley is arranged at the other end of the bracket, the number of the elastic mechanisms is 2 and corresponds to two clamping mechanisms one by one, and two ends of each elastic mechanism are respectively connected with the cross rod and the corresponding probe clamping mechanism and can apply radial positive pressure to the probe clamping mechanism so as to enable the probe to cling to the outer wall of the small-diameter tube. Optionally, the scanning frame further includes a first mounting adapter interface, where the first mounting adapter interface is mounted at a center position of the cross bar and is used for adapting to connect with the driving device. Optionally, the path monitoring module further comprises a first clamping mechanism, an angle adjusting mechanism and a second clamping mechanism which are sequentially connected, wherein the first clamping mechanism is arranged on the cross rod, the second clamping mechanism is used for fixing the industrial camera, and the industrial camera is connected with the phased array ultrasonic detection instrument through the network port. Optionally, the angle adjustment mechanism comprises a ball chain structure. Optionally, the coupling device is controlled by an automatic water injection system, is provided with a switch key and a pressure regulating knob, adopts a water tank as a water source, is connected with a water spraying hole at a wedge block of the probe, stably and continuously conveys the couplant to the probe, and can regulate the input water pressure of the couplant at any time. Optionally, the driving device comprises an encoder and a magnetic attraction wheel, wherein the encoder is connected with the phased array ultrasonic detection instrument and can record the path an