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CN-121994923-A - Online flaw detection device for end part of large-caliber seamless pipe

CN121994923ACN 121994923 ACN121994923 ACN 121994923ACN-121994923-A

Abstract

The invention discloses an online flaw detection device for the end parts of large-caliber seamless pipes, which comprises a plurality of rotary riding wheel mechanisms, two lifting pinch wheel mechanisms, two pipe end flaw detection mechanisms, two plug pieces and a control terminal, wherein the rotary riding wheel mechanisms are sequentially arranged along the transverse direction and are used for supporting the non-end parts of the same large-caliber seamless pipe together and driving the same large-caliber seamless pipe to rotate around the transverse axis of the same, the two pipe end flaw detection mechanisms are respectively provided with two coupling flaw detection ends which are respectively coupled with the lower ends of the two end parts of the same large-caliber seamless pipe and then carry out ultrasonic flaw detection, and the pipe end flaw detection mechanisms comprise transverse driving pieces for driving the coupling flaw detection ends to transversely move and vertical driving pieces for driving the coupling flaw detection ends to vertically move. The invention can carry out ultrasonic flaw detection on the whole end part of the large-caliber seamless pipe, and can ensure that the coupling flaw detection end can still keep medium coupling stable when the large-caliber seamless pipe is at the tail end, thereby reducing the length of a flaw detection blind area to absolute zero and further completely avoiding manual detection.

Inventors

  • PENG HONGLIANG

Assignees

  • 攀钢集团攀枝花钢铁研究院有限公司

Dates

Publication Date
20260508
Application Date
20260317

Claims (10)

  1. 1. An on-line flaw detection device for large-caliber seamless pipe ends, which is characterized by comprising: The rotating riding wheel mechanisms (400) are sequentially arranged along the transverse direction and are used for supporting the non-end parts of the same large-caliber seamless pipe together and driving the same large-caliber seamless pipe to rotate around the transverse axis of the rotating riding wheel mechanisms (400); The two lifting pinch roller mechanisms (800) are used for jointly contacting the upper ends of the non-end parts of the same large-caliber seamless pipe after being lowered and radially limiting the same large-caliber seamless pipe by matching with a plurality of rotary riding wheel mechanisms (400); The two pipe end flaw detection mechanisms (900), wherein the two pipe end flaw detection mechanisms (900) are respectively provided with two coupling flaw detection ends (930) which are respectively coupled with lower ends of two ends of the same large-caliber seamless pipe and then carry out ultrasonic flaw detection, and the pipe end flaw detection mechanisms (900) comprise a transverse driving piece (910) for driving the coupling flaw detection ends (930) to move transversely and a vertical driving piece (920) for driving the coupling flaw detection ends (930) to move vertically; the two plug members (1700) are respectively used for coaxially plugging two ends of the same large-caliber seamless pipe, the diameter of the exposed part of each plug member (1700) is matched with the outer diameter of the large-caliber seamless pipe, and the length of the exposed part of each plug member (1700) is not less than half of the width of the coupled flaw detection end (930); The control terminal is electrically connected with the rotary riding wheel mechanism (400), the lifting pinch wheel mechanism (800), the coupling flaw detection end (930), the transverse driving piece (910) and the vertical driving piece (920).
  2. 2. The apparatus for on-line flaw detection of a large-diameter seamless pipe end according to claim 1, further comprising: The seamless pipe rack (100), the upper end of the seamless pipe rack (100) is obliquely provided with a placing surface (110), and a plurality of large-caliber seamless pipes extending transversely are placed on the placing surface (110) one by one along the length direction; The tube drawing machine (200) is used for drawing out large-caliber seamless tubes on the placing surface (110) one by one; A first guide plate (300), an upper end surface high side of the first guide plate (300) being engaged with a low side of the placement surface (110); The jacking mechanisms (500) are connected with the lower side of the upper end face of the first guide plate (300) after jacking the upper side of the upper end face of the jacking mechanism (500), and the jacking mechanisms (500) are sequentially arranged transversely and are used for jacking the non-end parts of the same large-caliber seamless pipe; A second guide plate (600), wherein the upper end surface high side of the second guide plate (600) is connected with the lower side of the upper end surface of the jacking mechanism (500) after jacking; the output roller way (700) is positioned below the lower side of the upper end face of the second guide plate (600), and the output roller way (700) transversely outputs; wherein, after the upper end surfaces of the plurality of jacking mechanisms (500) synchronously descend, the large-caliber seamless pipe is supported by the plurality of rotary riding wheel mechanisms (400) together; The control terminal is electrically connected with the pipe pulling machine (200), the jacking mechanism (500) and the output roller table (700).
  3. 3. The online flaw detection device for the end of the large-caliber seamless pipe according to claim 2, wherein the pipe shifter (200) comprises a lifting baffle device and a pipe clamping device (220), and the lifting baffle device and the pipe clamping device (220) are electrically connected with a control terminal; After the lifting baffle device outputs upwards, the lifting baffle device blocks the first large-caliber seamless pipe from bottom to top and limits the downward rolling; After the pipe clamp (220) outputs downwards, the pipe clamp (220) clamps a second large-caliber seamless pipe from bottom to top and limits the downward rolling.
  4. 4. The apparatus for online inspection of large-caliber seamless pipe ends according to claim 3, wherein an adjusting rail for longitudinally adjusting the longitudinal position of the pipe clamp (220) is provided directly above the seamless pipe stand (100).
  5. 5. The on-line flaw detection device for large-diameter seamless pipe ends according to claim 2, wherein the inclination angles of the placement surface (110), the upper end surface of the first guide plate (300) and the upper end surface of the second guide plate (600) are identical.
  6. 6. The online flaw detection device for large-caliber seamless pipe ends according to claim 2, wherein the rotary riding wheel mechanism (400) comprises two riding wheels (420) with the same wheel diameter and a first rotary driving mechanism (410) for driving the riding wheels (420) to rotate, and the rotation center lines of the two riding wheels (420) are positioned at the same height and are parallel to each other.
  7. 7. An on-line flaw detection apparatus for large-diameter seamless pipe ends according to claim 1 or 2, wherein the coupling flaw detection end (930) includes a probe (938) for supplying an ultrasonic couplant to the large-diameter seamless pipe lower end and performing ultrasonic flaw detection; The pipe end flaw detection mechanism (900) comprises a plurality of bullnose bearings (939) which are arranged at the upper part of the probe (938) and are used for being jointly contacted with the lower end of the large-caliber seamless pipe; The pipe end flaw detection mechanism (900) comprises a connecting seat (931), the output end of the transverse driving piece (910) is fixedly connected with the fixed end of the vertical driving piece (920), and the output end of the vertical driving piece (920) is fixedly connected with the connecting seat (931); The pipe end flaw detection mechanism (900) comprises a shaft fork (933), a self-lubricating bearing (932) is vertically and fixedly connected in the upper portion of the connecting seat (931), a shaft portion of the shaft fork (933) is vertically inserted into the self-lubricating bearing (932), a connecting shaft (935) is longitudinally connected to a fork portion of the shaft fork (933), and the lower portion of the probe (938) is connected to the connecting shaft (935).
  8. 8. The online flaw detection device for the end of the large-caliber seamless pipe according to claim 7, wherein a guide flat key is vertically and detachably connected to the large end of the shaft part of the shaft fork (933), a guide key groove for key connection of the guide flat key is vertically arranged on the connecting seat (931), and a first gap exists between the guide flat key and the guide key groove; The small end of the shaft part of the shaft fork (933) penetrates through the self-lubricating bearing (932) and then is sequentially sleeved with a baffle ring (934) and a first elastic piece, and two ends of the first elastic piece are respectively abutted against the lower end surface of the baffle ring (934) and the lower part of the connecting seat (931); the two ends of the connecting shaft (935) are rotatably connected to the fork part of the shaft fork (933), and a second gap exists between the lower end surface of the probe (938) and the fork part of the shaft fork (933); The lower part of the probe (938) is sleeved on the connecting shaft (935), two ends of the probe (938) are provided with a second elastic piece (936) which is sleeved on the connecting shaft (935) and a fastening nut (937) which is in threaded connection on the connecting shaft (935), and two ends of the second elastic piece (936) are respectively abutted against the probe (938) and the fastening nut (937).
  9. 9. The on-line inspection device for large-caliber seamless pipe ends according to claim 7, wherein the probe (938) comprises a main body, an epoxy resin layer (1000) embedded in the upper part of the main body, and a water distribution channel (1200) for supplying an ultrasonic couplant, the water distribution channel (1200) passing through the main body and the epoxy resin layer (1000) with the water distribution end facing upward.
  10. 10. The online flaw detection device for the end of the large-caliber seamless pipe according to claim 7, wherein the transverse driving piece (910) comprises a base (911), a screw rod (914) is connected to the base (911) in a transverse rotating manner, a second rotation driving mechanism (915) for driving the screw rod (914) to rotate is fixedly connected to the base, a screw nut (913) is connected to the screw rod (914) in a threaded manner, a slide seat (912) is fixedly connected to the screw nut (913), and the lower part of the slide seat (912) is transversely connected to the base (911) in a sliding manner; The vertical driving piece (920) comprises a linear driving mechanism (921) and two parallel connecting rods (922), wherein two ends of the linear driving mechanism (921) are respectively hinged on the sliding seat (912) and the connecting seat (931) around the longitudinal direction, the lower ends of the two connecting rods (922) are respectively hinged on the same height position of the sliding seat (912) around the longitudinal direction, and the upper ends of the two connecting rods (922) are respectively hinged on the same height position of the connecting seat (931) around the longitudinal direction.

Description

Online flaw detection device for end part of large-caliber seamless pipe Technical Field The invention belongs to the technical field of large-caliber seamless pipe flaw detection, and particularly relates to an online flaw detection device for large-caliber seamless pipe ends. Background The large-caliber seamless pipe (the outer diameter is larger than 219 mm) is a key base material of a modern industrial ridge beam type, supports energy safety, promotes the development of heavy equipment and ensures chemical safety and important engineering construction. The last important process for producing large-caliber seamless tubes is nondestructive detection, and ultrasonic online flaw detection is also a necessary process for detecting internal defects. The on-line ultra-detection device represented by German KK company scans the full section by adopting a mode of straight line running along a steel pipe and rotating a series of probes in a coupling water tank. However, the steel pipe is poorly coupled when just entering the coupling water tank, and the probe array itself occupies a certain length of space, so the two ends of the steel pipe are in a length range of about 600mm, the detection blind area needs to be checked manually, and the large caliber of the large caliber seamless pipe has extremely high labor intensity, low efficiency and poor accuracy in manual processing, thereby influencing the production speed of the large caliber seamless pipe. Disclosure of Invention The invention provides an online flaw detection device for the end part of a large-caliber seamless pipe, which is used for overcoming the defects of the prior art and carrying out ultrasonic flaw detection on the whole end part of the large-caliber seamless pipe. The aim of the invention is achieved by the following technical scheme: an on-line flaw detection device for large-caliber seamless pipe ends, comprising: The rotating riding wheel mechanisms are sequentially arranged along the transverse direction and are used for supporting the non-end parts of the same large-caliber seamless pipe together and driving the same large-caliber seamless pipe to rotate around the transverse axis of the rotating riding wheel mechanisms; The two lifting pinch roller mechanisms are used for jointly contacting the upper ends of the non-end parts of the same large-caliber seamless pipe after descending and radially limiting the same large-caliber seamless pipe by matching with a plurality of rotary riding wheel mechanisms; The two pipe end flaw detection mechanisms are respectively provided with two coupling flaw detection ends which are respectively coupled with lower ends of two ends of the same large-caliber seamless pipe and then carry out ultrasonic flaw detection, and each pipe end flaw detection mechanism comprises a transverse driving piece for driving the coupling flaw detection ends to transversely move and a vertical driving piece for driving the coupling flaw detection ends to vertically move; the two plug pieces are respectively used for coaxially plugging two ends of the same large-caliber seamless pipe, the diameter of the exposed part of each plug piece is matched with the outer diameter of the large-caliber seamless pipe, and the length of the exposed part of each plug piece is not less than half of the width of the coupled flaw detection end; the control terminal is electrically connected with the rotary riding wheel mechanism, the lifting pinch wheel mechanism, the coupling flaw detection end, the transverse driving piece and the vertical driving piece. Further, the large-caliber seamless pipe end part online flaw detection device further comprises: the seamless pipe rack is provided with a placing surface in an inclined mode at the upper end, and a plurality of large-caliber seamless pipes extending transversely are placed on the placing surface one by one along the length direction; the tube pulling machine is used for pulling out the large-caliber seamless tubes on the placing surface one by one; the upper end surface Gao Cejie of the first guide plate is matched with the lower side of the placement surface; The jacking mechanisms are transversely arranged in sequence and used for jacking the non-end parts of the same large-caliber seamless pipe; The upper end face of the second guide plate is connected with the lower side of the upper end face of the lifting mechanism after lifting; the output roller way is positioned below the lower side of the upper end face of the second guide plate and is transversely output; After the upper end surfaces of the lifting mechanisms synchronously descend, the large-caliber seamless pipe is supported by the rotary riding wheel mechanisms; The control terminal is electrically connected with the pipe pulling machine, the jacking mechanism and the output roller way. Further, the pipe pulling machine comprises a lifting baffle plate device and a pipe clamping device, and the lifting baffle plate device