SU1490625A1 - Device for ultrasonic inspection of threaded joint of pipes - Google Patents

Abstract

A device for automated scanning relates to non-destructive testing and can be used for ultrasonic testing of threaded pipe joints. The aim of the invention is to improve the quality of monitoring the tightness of a threaded joint due to the constant scanning speed of the converter. In an automated scanning device, the engine is rigidly mounted on a half-ring, a gear wheel is fixed on the engine shaft, kinematically connected to gear half-crowns mounted on half-rings rotatably, and one of the gear half-crowns is provided with a threaded hole inside which is placed a screw with a guide roller at one end and a converter at the other

for orientation and retention of the half-crowns on the half-rings, they are provided with T-shaped guides. 1 h. item f-ly, 1 ill.

Description

The invention relates to non-destructive testing and can be used dp ultrasonic testing of threaded connections of oil country tubular pipes directly under the conditions of the production service base.

The purpose of the invention is to improve the quality and control of tightness of a threaded joint due to the uniform scanning speed of the converter.

The drawing shows a diagram of the proposed device.

The device contains two half rings 1, on one of which a motor 3 is mounted on a chip-2, on which a gear wheel 4 is attached, coupled with a half-crown 5. In one gear-half-crown 5 there is a threaded hole with a screw 6 placed in it with a guide roller 7 and a transducer 8. The toothed half-worm 5 is equipped with a T-shaped groove for moving along the half rings I. The half rings 1 are equipped with spring-loaded shoes 9 made of soft material, for example rubber, to prevent them from slipping along the surface of the pipe 10 monitoring time. Also on the half rings 1 installed locks 11, providing the opening and closing number 1 half rings)

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when installing the device on a controlled pipe 10.

The device works as follows.

Semi-rings 1 are unlocked by lock I1, are mounted with spring-loaded shoes 9 on controlled pipe 10 and are closed by lock 11. Power is supplied to motor 3 mounted on bracket 2, the torque of which is transmitted by gear 4 by gear 4 moving along T-shaped semi-ring 1 The axial movement of the converter 8 relative to the threads of the thread is carried out by the driving roller 7 by moving the screw in the threaded hole made in one of the half-webs 5, the roller 7 is in

frictional engagement with 10 half-rings fixedly mounted on the pipe 1. Roller 7 runs in, and therefore screwing in or unscrewing screw 6 takes place depending on the direction of rotation of the motor shaft 3. Per turn of converter 8 by 360 °, it is displaced by a multiple of the controlled thread.

Implementing this technical solution will improve the quality of checking the tightness of a threaded joint by uniformly scanning the transducer over the threads, and the scanning speed does not depend on the position of the device under control, and therefore the mass of individual units of the device will not affect the scanning speed of the transducer.

Claims (1)

Invention Formula I. Device for ultrasonic testing of threaded pipe joints, containing a base in the form of two half-rings, a guide fixed on them, an engine mounted on one of the half-rings with a gear wheel mounted on its shaft, a scanning unit and an ultrasonic transducer connected to the scanning unit; e so that, in order to improve the quality of checking the tightness of the threaded joint by providing a uniform scanning speed of the ultrasonic transducer, the motor has a gesture about on the half-ring, the scanning unit is filled in the form of two toothed half-crowns, in one of which there is a threaded hole, a screw in it with a guide roller on one end, an ultrasonic transducer is placed on the other end of the screw, the gear wheel is kinematically connected with the pulleys, rotated in half-rings, 2, the device according to claim 1, characterized in that the guide has a T-shaped cross-section.