SU1173307A1 - Device for continuous ultrasonic fault detection of thin-walled tubes - Google Patents

Description

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The invention relates to a device used, in particular, for the development of ultrasonic flaw detection of thin-walled pipes transported successively through a test chamber, with the aim of finding defects and geometrical errors of test specimens with high performance without limitation regarding their diameters and thickness of steaks. A device for ultrasonic flaw detection of pipes is known, comprising a test chamber, a device for transporting pipes with supply, retracting and testing sites, connecting elements, supply and receiving devices for connecting elements with a guide system for their return transportation (aut. USSR No. 648901, Cl. G 01 N 29/04, 1975). The supply and reception devices in the known structure are made in the form of a turning disk, around the circumference of which clamps for connecting elements are placed. Transportation of the connecting elements is done by turning. disk. A disadvantage of the known device is the low productivity of the control process and the high cost. The purpose of the invention is to increase the productivity of the control process. The drawing schematically shows a device with partial cuts. In the feed direction of the pipes 1, 2 and 3, the supply device 12 is located (in front of the test chamber 7) and the receiving device B {the test chamber 7). Ball-shaped docking elements 13 are provided for sealing the tubes 1-3. On the feed device there are transport rollers 4-6 providing different feed speeds of the tubes 1-3. The structural units 8 and 9 are lowered to seal the test chamber 7 filled with liquid and simultaneously to guide the pipes 1-3. When the pipes 1 and 2 are in the position shown in the drawing, the end 10 of the pipe 1 and the end 14 of the pipe 2 are placed in such a way that the connecting element 13 is fed through the opening 11 of the feeding device 12 and is placed between the specified ends. The feed speed of the pipe 2, which is determined by the transport rollers 5, is less than the feed speed of the pipe 1, which is determined by the transport rollers 4. As a result, the coupling element 13 is pressed simultaneously to the ends 10 and 14 of the pipes 1 and 2, respectively, and compresses them so that during the passage of pipes 1 and 2, the liquid in the test chamber 7 did not get into the pipes 1 and 2 (the end 15 of the pipe 2 and the end 16 of the pipe 3 had already passed the test chamber 7 and were in the receiving device 18). In the position shown in the drawing, the pipe 3 is accelerated by the transport rollers 6. As a result, it receives a greater feed rate than the pipe 2, therefore the distance between the ends 15 and 16 of pipes 2 and 3 increases. The coupling element 13 is released, falls into the opening 17 and is transported through the guide system 19 to the inlet device 12. The shape of the pipe ends should be adjusted to the shape of the connecting elements.

Claims (1)

DEVICE FOR CONTINUOUS ULTRASONIC DEFECTOSCOPY OF THIN-WALLED PIPES, containing a test chamber, a device for transporting pipes with inlet, outlet and test sections, connecting elements, supply and receiving devices for connecting elements with a guiding system for their return transportation, which differs in that , in order to increase the productivity of the control process, the docking elements are made in the form of balls, and the device for the transportation of pipes in the form of feed rollers, and the speed eremescheniya pipes for supply and discharge stations exceeds the speed of movement of the pipe at the test section.