SU845088A1

SU845088A1 - Device for ultrasonic inspection of tubes

Info

Publication number: SU845088A1
Application number: SU792808244A
Authority: SU
Inventors: Михаил Васильевич Кузнецов; Александр Сергеевич Иванов
Original assignee: Предприятие П/Я Р-6476
Priority date: 1979-08-06
Filing date: 1979-08-06
Publication date: 1981-07-07

Description

(54) УСТРОЙСТВО ДЛЯ УЛЬТРАЗВУКОВОГО КОНТРОЛЯ ТРУБ(54) DEVICE FOR ULTRASONIC PIPE CONTROL

1one

Изобретение относитс к устройствам дл неразрушающего контрол и может быть использовано дл контрол труб.The invention relates to devices for non-destructive testing and can be used to inspect pipes.

Известно устройство дл ультразвукового контрол , содержащее корпус с центратором , излучатель и отражательную призму 11 .A device for ultrasonic testing is known, comprising a housing with a centralizer, an emitter and a reflective prism 11.

Недостатком этого устройства вл етс то, что при контроле искривленных труб не обеспечиваетс центрирование корпуса.A disadvantage of this device is that when inspecting curved pipes, the body is not centered.

Наиболее близким к изобретению по технической сущности вл етс устройство дл ультразвукового контрол труб, содержащее цилиндрический корпус и размещенные по его длине, жестко св занные с ним две опоры одного диаметра, пьезоискатель, расположенный между ними, и штангу 2.The closest to the invention in its technical essence is a device for ultrasonic testing of pipes, comprising a cylindrical body and placed along its length, two supports of the same diameter rigidly connected with it, a piezo-finder located between them, and a rod 2.

Недостатко.м этого устройства вл етс то, что оно не может быть использовано дл контрол труб с повышенной температурой и искривленной осью.The disadvantage of this device is that it cannot be used to control pipes with elevated temperature and a curved axis.

Целью изобретени вл етс повышение надежности контрол труб с искривленной осью.The aim of the invention is to increase the reliability of monitoring tubes with a curved axis.

Эта цель достигаетс тем, что опора, ближн к штанге, выполнена разъемной в плоскости, параллельной оси устройства.This goal is achieved by the fact that the support, near to the rod, is made detachable in a plane parallel to the axis of the device.

и пустотелой, охватывающей корпус, на ее наружной поверхности выполнены отверсти диаметром от 0,3 до 0,5 толщины ее стенки, а корпус соединен со штангой посредством сильфона, наружный диаметр которого не превышает 0,9 диаметра опоры. На чертеже изображено устройство дл ультразвукового контрол труб, продольный разрез.and the hollow enclosing the case, on its outer surface there are holes with a diameter from 0.3 to 0.5 of its wall thickness, and the case is connected to the rod by means of a bellows, the outer diameter of which does not exceed 0.9 of the support diameter. The drawing shows a device for ultrasonic testing of pipes, a longitudinal section.

Устройство содержит щтангу 1, св занную сильфоном 2 с корпусом 3, на котором The device comprises a bar 1, connected by a bellows 2 with a body 3, on which

10 размещаетс сферическа опора 4 центратора , выполненна разъемной в плоскости, параллельной оси устройства. Опора 4 имеет отверсти диаметром от 0,3 до 0,5 от толщины ее стенки и ст нута при помо5 щи двух прул инных колец 5. Кроме того, устройство содержит пьезоискатель 6, установленный на корпусе 3, вторую опору 7 центратора, выполненную враш.ающейс и имеющую продольные пазы дл прохода контактной жидкости 8. Опора 7 крепитс 10 a spherical bearing 4 of the centralizer is placed, which is made detachable in a plane parallel to the axis of the device. Bearing 4 has openings with a diameter of 0.3 to 0.5 of the thickness of its wall and wall with the help of two prul rings 5. In addition, the device contains a piezoscope 6 mounted on the housing 3, the second support 7 of the centralizer made vrash. The bearing and having longitudinal grooves for the passage of contact fluid 8. Support 7 is attached

20 на корпусе при помощи направ,1 ющего конуса 9 и ст гивающей гайки 10.20 on the body with the help of a guide, 1 cone 9 and a tightening nut 10.

Claims

The housing houses a matching board 11, high-frequency connectors 12 with a cable 13 connecting the piezo-detector 6 with the flaw detector (rfa drawing not shown). The device works as follows. The device is delivered to the control zone of the pipe 14 by means of a bar 1 connected by a bellows 2 to the body of the device. Through the sylphs, the device can rotate around the axis and move along the axis of the pipe, copying the curvature of the surface. After the device is delivered to the control zone of the pipe, kO) is supplied. The contact liquid, which, after passing through the slit gap between the pipe and the bellows, is pre-cleaned, then the passage through the holes of the support 4 is more thoroughly cleaned from foreign particles. The contact fluid passes through the annular gap between the body and the inner surface of the pipe to the piezo-searcher 6, simultaneously providing laminar flow and cooling the piezo-detector 6. When monitoring long canals with a curved axis, the device copies the curvature of the control zone by connecting the body with a barbell with a bellows. The device allows monitoring of channels with elevated temperature up to 4-90 ° C, since the contact liquid has the ability to flow around the device. Apparatus of the Invention The device for ultrasonic testing of tubes, comprising a cylindrical body and placed along its length, two supports of the same diameter rigidly associated with it, a piezo-finder located between them, and a pole, characterized in that, in order to increase the reliability of control of tubes with a curved axis, the support, closest to the shtanga, is made detachable in a plane parallel to the axis of the device, and hollow, enclosing the body, on its outer surface there are holes with a diameter from 0.3 to 0.5 of its wall thickness, and the body is connected to shtanga through bellows, the outer diameter of which does not exceed 0.9 diameter of the support. Sources of information taken into account in the examination 1. US patent number 4008603 cells. 73-67.8, 1977.

2. The patent of Germany No. 2636107 class. G 01 N29 / 04. 1979 (prototype).