RU194818U1 - DEVICE FOR MOVING A MECHANO-ACOUSTIC BLOCK DURING ULTRASONIC NON-DESTRUCTIVE TESTING OF WELDED COMPOUNDS - Google Patents

Abstract

Usage: to detect and characterize defects in welded joints and the base metal of the main gas pipelines, as well as to determine the residual wall thickness of the main gas pipeline (MG). The essence of the utility model is that the device for moving the mechanoacoustic block during ultrasonic non-destructive testing of welded joints consists of a base made of a metal channel with two U-shaped metal plates welded to it, interconnected by a third U-shaped metal plate, through holes in two plates using a bolt-nut connection, a thrust bearing is fixed, a U-shaped mount is welded to the third plate with through a bolt-nut connection with a threaded rod with thumbscrews mounted on it, a movable metal plate with a metal corner welded to it through a loop connection is welded to the base, through the hole in which the angle of inclination is adjusted with the wing screws this U-shaped mount is welded to the movable plate on which the guide of the bypass roller is fixed through the bolt-nut connection, the angle of inclination of which is regulated by a threaded sleeve mounted on a threaded rod th fixed on the second U-shaped mount welded to the movable plate. EFFECT: provision of the possibility of moving the mechanoacoustic unit of an ultrasonic measuring apparatus over the surface of a gas pipeline in a mechanized manner. 3 ill.

Description

The utility model relates to the field of the gas industry and can be used to detect and characterize defects in welded joints and the main metal of main gas pipelines (hereinafter - MG), as well as to determine the residual wall thickness of MG.

Known ultrasonic measuring installation of the series "SCANER", designed for ultrasonic non-destructive testing of welded joints and the base metal of pipelines [1]. The installation consists of an eight-channel electronic unit for receiving, processing and presenting information about defects, a mechanoacoustic unit (hereinafter referred to as MB) for measurements and an information cable connecting them. When performing work related to scanning the control zone, the operator must manually move the MB along the pipe surface.

The main disadvantages of this method are:

- long time work;

- inconvenience to the operator when changing the spatial position of the scanning zone (especially on pipes with a diameter of more than 1000 mm);

- a strong impact on the operator of the contact fluid, which flows around the circumference of the pipe.

The objective of the utility model is to reduce the complexity when conducting ultrasonic non-destructive testing of welded joints and the base metal of pipelines.

EFFECT: possibility of moving the mechanoacoustic unit of an ultrasonic measuring apparatus over the surface of a gas pipeline in a mechanized way.

The problem is solved, and the technical result is achieved by creating and using a specialized device for moving the MAB.

The claimed device for moving a mechanoacoustic block during ultrasonic non-destructive testing of welded joints is illustrated using:

FIG. 1 is a front view of the device;

FIG. 2 is a side view of the device.

The device consists of a base 1 - a metal channel with U-shaped metal plates 2 and 3 welded to its base, interconnected by a U-shaped metal plate 4. A support bearing 5 is fixed through the holes in the plates 2 and 3 by means of a bolt-nut connection. A U-shaped fastener 5 is welded to the plate 4 with a threaded rod 6 installed in it through a bolt-nut connection with the thumbscrews 7 and 8 mounted on it. A movable metal plate 10 is welded to the base 1 through a loop connection 9 ivarennym to its base metal area 11 through the opening in which the via thumbscrews 7 and 8 is adjustable angle of inclination. Also, a U-shaped mount 12 is welded to the plate 10 on which a guide 13 is fixed via a bolt-nut connection with a bypass roller 14 mounted on it, the angle of inclination of which is regulated by a threaded sleeve 15 mounted on a stud with a thread 16 that is mounted on the U-shaped mount 17 welded to a movable metal plate 10.

The operation of the device is shown in FIG. 3 and is carried out as follows.

MAB 18 is installed in the groove of the base 1 of the device. Depending on the diameter of the pipe, the angle of inclination of the movable metal plate of the base 10 is set by moving the thumb screws 7 and 8 along the threaded rod 6. Through holes 19, the device is connected to the drive mechanism of the MRI pipe cutting machine -01 [2] (shown in Fig. 3). The resulting assembly is mounted on the body of the pipe 20 by means of a chain adapted to the diameter of the pipe passing over the thrust bearing 5 under the bypass roller 14, which adjusts its tension by the angle of its inclination, which is regulated by a nut 15 mounted on a stud with thread 16 (shown in Fig. 3 ) The drive mechanism of the MRT-01 pipe cutting machine moving under the influence of a screwdriver electric motor or electric drill drives the claimed device for moving the mechanoacoustic block with MAB 18, which scans the pipe body 20 with welded joint 21 at various angles and reveals defects in welded joints 22.

Salient features of the claimed device are:

- the device is made in the form of a carriage, it is easily transported and adapted to drive machines for cutting pipes (for example, MRT-01) for mechanized movement of the gas pipeline through the body of the pipe;

- the tool is structurally made collapsible, which allows you to adapt it to various working conditions and pipeline diameters;

- the introduction of this device eliminates the need for manual scanning of control zones.

The claimed significant distinguishing features are unknown to us from the patent and scientific and technical information and are therefore “New”.

For the claimed device, working drawings, strength calculations, and a prototype were made, which were successfully tested in the diagnosis of sections of the gas pipelines of Gazprom Transgaz Ukhta. In this regard, the device declared by us meets the criterion of “Industrial applicability”.

List of sources:

1. Ultrasonic flaw detector SCANNER + [Electronic resource]. URL: http://www.ndtprom.ru/product/skaner_plus.html (accessed July 22, 2019).

2. Machines for cutting pipes [Electronic resource]. URL: http://www.svarshov.ru/esab/item/1757-mrt-01-mashiny-dlya-kislorodnoj-i-vozdushno-plazmennoj-rezki-trub.html (accessed July 22, 2019).

Claims (1)

A device for moving a mechanoacoustic block during ultrasonic non-destructive testing of welded joints, characterized in that it consists of a base made of a metal channel with two U-shaped metal plates welded to it, interconnected by a third U-shaped metal plate, through holes in two plates using a bolt-nut connection, a support bearing is fixed, a U-shaped mount is welded to the third plate with it mounted on it through the connection e a bolt-nut with a threaded rod with thumbscrews installed on it, while a movable metal plate with a metal corner welded to it through the loop connection is welded to the base through the hole in which the angle of inclination is adjusted with the thumb screws, A U-shaped mount is welded to the movable plate, onto which a bypass roller guide is fixed through a bolt-nut connection, the angle of inclination of which is regulated by a threaded sleeve mounted on a stud with a thread mounted on n torus-shaped bracket that is welded to the movable plate.

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