RU159204U1 - ULTRASONIC IN-TUBE DEFECTOSCOPE BLOCK FOR IDENTIFICATION OF ARBITRALLY ORIENTED DEFECTS - Google Patents

Abstract

1 Ultrasonic unit of an in-line flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure, inside which an electronic module for controlling and processing echo signals is installed, consisting of ultrasonic transceivers, a path for processing received echo signals, a pulse generator, which through a multiplexer and an amplifier with a variable gain connected to the gain setting program unit, connected to an analog-to-digital converter, which, in its in turn, it is connected to the echo signal control and processing module, and then through the serial interface to the information storage device and through the sealed connector mounted on the bottom cover of the sealed enclosure of the ultrasonic unit of the in-line flaw detector to detect randomly oriented defects, it is connected to power sources and control signals, when On the outer surface of the sealed enclosure, N unfocused immersion piezoelectric transducers are located to detect flax-oriented defects. 2 Ultrasonic flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure according to claim 1, characterized in that on the outer surface of the sealed enclosure there is a combined installation of piezoelectric transducers: not focusable and focusable with an extended radiation pattern in the horizontal plane .

Description

The utility model relates to devices and methods for non-destructive testing of pipelines and can be used for in-line diagnostics of oil and gas pipelines.

A known acoustic unit of an echo-pulse device for controlling the quality of materials by ultrasonic vibrations (SU 596877 A1, IPC G01N 29/04, priority of 03/31/1975), comprising emitting and receiving transducers located in the housings and fastened to the working bases of the latter, while the working housings are made from a material whose shear modulus is not less than 100 times less than the shear modulus of the piezoelectric transducer material and not less than 10 times less than the shear modulus of the controlled material. This acoustic unit is designed to control materials with a large attenuation of ultrasound and is not suitable for in-line pipe diagnostics.

A known acoustic unit for ultrasonic testing (SU 1525567 A1, IPC G01M 29/04, priority dated 06/26/1987), comprising a housing, a damper, a piezoelectric element and an elastic protector provided with a frame articulated to the housing with contact elements. The end face of the body on the tread side is made with bevels, and the distance between the hinge axis and the ends of the body, contact elements and tread is selected from the condition: 1core <1ke <1pr. This acoustic unit is designed for external monitoring of products with non-parallel surfaces and is not suitable for in-line pipe diagnostics.

A known method and device for pipeline diagnostics (Method and device for indspecting pipelines) (US 6848313 B2, IPC G01N 29/07, G01 29/24, G01N 29/26, G01N 29/34, priority dated 01/22/2002), in which an ultrasonic linear phased antenna array (hereinafter referred to as the PAR) is used, which scans in only one plane, and for this operation of each element of the linear PAR, a separate transceiver and a separate path for processing echo signals are required.

A known acoustic unit with a variable input angle of ultrasonic vibrations (SU 1730918 A1, IPC GN29 / 24, priority dated 12/15/1988), comprising a housing made in the form of a body of revolution and mounted for rotation relative to the central axis, rigidly fixed in

working piezoelectric elements, a position sensor and a coupling adapter with a rotation mechanism and movement of the acoustic unit, the body of which is made in the form of a sector of the body of revolution with a central angle of not more than 180 ° and a concave spherical surface made in the housing from the side opposite to the coupling sleeve, with a mechanism rotation and movement of the acoustic unit, the working piezoelectric elements are placed evenly on two circles of different diameters so that the acoustic axes intersect at one point. This acoustic unit is the closest in essence, but the design of this unit cannot be used in in-line diagnostics, since rotation of the acoustic unit around the object under study is used to sound the volumetric body. In addition, in this acoustic unit, the direction of radiation of all piezoelectric transducers (hereinafter referred to as the probe) in one direction creates mutual interference with the neighboring probe.

Known patent US 6474165 B1 "North West Water Limited", IPC G01N 29/06, G01N 29/10, G01N 29/26, G01N 29/265, priority from 11/05/2002, which claims a device for diagnosing the pipeline on which are installed several rings with ultrasonic transducers: the first ring is equipped with transducers located normally to the axis of the pipeline in a radial position; the transducers of the second and third rings work in pairs in the longitudinal direction to the axis of the pipeline, one ring of the pair emits pulses along the pipe at an angle to the wall of the pipeline, the other ring receives reflected waves; the fourth ring of sensors is used in the radial plane in the mode of refraction / reflection. The disadvantage of the claimed device is that in the case of using one ring with radiating sensors, and the second ring with sensors receiving a reflected signal, there is a loss of diagnostic data, since with an arbitrarily oriented defect, the angle of refraction / distortion of the signal from the surface of the defect may be outside the zone action ring sensors. Also, the design of the device involves the presence of numerous cable connections connecting the converters. The above device is a prototype of the claimed utility model.

The technical result of the claimed utility model is to increase the likelihood of detecting randomly oriented defects in the pipeline.

The technical result is achieved by using in the composition of the in-line flaw detector an ultrasonic block in-line flaw detector

for detecting randomly oriented defects (hereinafter referred to as the ultrasonic unit), consisting of a sealed enclosure, on the outer surface of which there are N unfocused immersion probes for detecting arbitrarily oriented defects, and inside the sealed enclosure is an electronic module for controlling and processing echo signals. Unfocused immersion probes for detecting randomly oriented defects in the ultrasound block are installed at an angle α = 15 ° ... 23 ° to the surface of the pipeline and oriented at an angle β, which can take values within 0 ° ... 360 ° relative to the direction of movement of the flaw detector.

To prevent attenuation of transmitted excitation pulses and received echo signals in cable connections, to save hardware resources, to emit ultrasonic waves simultaneously in different directions, in order to sound the pipe wall simultaneously in several directions, the design of the ultrasonic unit is designed so that it is possible to install non-focused immersion probes for detecting randomly oriented defects in the directions of the most probable occurrence of defects, and also combined PEP installation: not focusable and focusable, in one ultrasonic unit. In this case, probes with an extended radiation pattern in the horizontal plane as an invention are protected by the patent of the Russian Federation RU 2491535 C1, IPC G01N 22/02, priority from 12.22.2011, the copyright holders of which are the applicants of this utility model.

The electronic module for controlling and processing the echo signals installed inside the sealed enclosure consists of ultrasonic transceivers and a path for processing the received echo signals, and power and control signals are supplied through the sealed connector mounted on the bottom cover of the sealed enclosure of the ultrasonic unit. Also, the electronic module for controlling and processing the echo signals consists of a pulse generator, which is connected to an analog-to-digital converter, which in turn is connected to the module for controlling and processing the echo through a multiplexer and amplifier with a variable gain, with a program unit for setting the gain signal, and then through a serial interface - with the device information storage.

The claimed ultrasonic unit of an in-line flaw detector for detecting randomly oriented defects, in which the orientation of unfocused immersion probes at different angles relative to the movement of the in-line flaw detector allows detecting randomly oriented defects in the body and on the surface of the pipeline, while installing a PEP with an expanded radiation pattern in the horizontal plane along relative to the surface of the pipeline allows you to reduce the number of probes necessary for a complete survey RA of the controlled section of the pipeline. There are also no numerous cable connections (for N probes, N coaxial cables are required) connecting probes installed on the sensor carrier with an electronic module for controlling and processing echo signals located in the sealed case of the ultrasonic unit.

In FIG. 1 shows an arrangement of unfocused immersion probes for detecting randomly oriented defects.

In FIG. 2 shows an ultrasonic unit with non-focused immersion probes mounted on it to detect randomly oriented defects.

In FIG. 2 adopted the following notation:

1. sealed housing;

2. not focused immersion probes;

3. sealed connector.

In FIG. Figure 3 shows an ultrasound unit with a combined installation of non-focused immersion probes to detect randomly oriented defects and focused immersion probes.

In FIG. 3 adopted the following notation:

1. sealed housing;

2. not focused immersion probes;

3. sealed connector;

4. focused immersion probes.

In FIG. 4 is a structural diagram of an electronic module of an ultrasonic module.

In FIG. 4 the following notation is accepted:

2, 4 not focused and focused immersion probes;

5. pulse generator;

6. multiplexer;

7. variable gain amplifier;

8. block software setting gain;

9. analog-to-digital converter;

10. control module and processing of echo signals;

11. serial interface;

12. information storage device.

The ultrasonic unit consists of a sealed enclosure 1 (Fig. 2 and Fig. 3). On the outer side of the sealed enclosure 1 (Fig. 2 and Fig. 3) of the ultrasonic unit, 18 non-focused immersion probes 2 (Fig. 2, Fig. 3 and Fig. 4) are located. On the outside of the sealed enclosure 1 (FIG. 2 and FIG. 3) of the ultrasound unit, there are 9 non-focused immersion probes 2 (FIG. 3) and 9 focused immersion probes 4 (FIG. 2, FIG. 3 and FIG. 4).

The electronic module for controlling and processing the echo signals installed inside the sealed enclosure 1 (Fig. 2 and Fig. 3) consists of ultrasonic transceivers and a path for processing the received echo signals, and through the sealed connector 3 (Fig. 2 and Fig. 3) mounted on the bottom cover of the sealed enclosure 1 (Fig. 2 and Fig. 3) of the ultrasonic unit, power and control signals are supplied. Also, the electronic module for controlling and processing the echo signals includes a pulse generator 5 (Fig. 4), which through the multiplexer 6 (Fig. 4) and an amplifier with variable gain 7 (Fig. 4), with a program unit for setting the gain 8 (Fig. 4), connected to an analog-to-digital converter 9 (Fig. 4), which in turn is connected to the control and processing module of the echo signal 10 (Fig. 4), and then through a serial interface 11 (Fig. 4) - with the device information storage device 12 (Fig. 5).

qj Ultrasonic in-line flaw detector for detecting randomly oriented defects Utility model formula

p. 1 Ultrasonic unit of an in-line flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure, inside which an electronic module for controlling and processing echo signals is installed, consisting of ultrasonic transceivers, a processing path for received echo signals, and a pulse generator, which is transmitted through a multiplexer and a variable gain amplifier connected to the gain programmable unit, connected to an analog-to-digital converter, which first of all, it is connected to the control and processing module of the echo signal, and then through the serial interface to the information storage device, and through the sealed connector mounted on the bottom cover of the sealed housing of the ultrasonic unit of the in-line flaw detector to detect randomly oriented defects, it is connected to power sources and signals control, while on the outer surface of the sealed enclosure there are N non-focused immersion piezoelectric transducers to detect arbitrarily oriented defects.

p. 2 Ultrasonic block of an in-line flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure according to claim 1, characterized in that on the outer surface of the sealed enclosure there is a combined installation of piezoelectric transducers: not focusable and focusable with an extended radiation pattern in the horizontal plane.

Ultrasonic in-line flaw detector for detecting randomly oriented defects

Utility Model Abstract

The utility model relates to devices and methods for non-destructive testing of pipelines and can be used for in-line diagnostics of oil and gas pipelines.

The claimed ultrasonic unit of an in-line flaw detector for detecting randomly oriented defects, in which the orientation of unfocused immersion probes at different angles relative to the movement of the in-line flaw detector allows detecting randomly oriented defects in the body and on the surface of the pipeline, while installing a PEP with an expanded radiation pattern in the horizontal plane along relative to the surface of the pipeline allows you to reduce the number of probes necessary for a complete survey RA of the controlled section of the pipeline. There are also no numerous cable connections (for N probes, N coaxial cables are required) connecting probes installed on the sensor carrier with an electronic module for controlling and processing echo signals located in the sealed case of the ultrasonic unit.

f7ikov with an electronic module for control and processing of echo signals located in a sealed enclosure of the ultrasonic unit.

Claims (1)

1 Ultrasonic unit of an in-line flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure, inside which an electronic module for controlling and processing echo signals is installed, consisting of ultrasonic transceivers, a path for processing received echo signals, a pulse generator, which through a multiplexer and an amplifier with a variable gain connected to the gain setting program unit, connected to an analog-to-digital converter, which, in its in turn, it is connected to the echo signal control and processing module, and then through the serial interface to the information storage device and through the sealed connector mounted on the bottom cover of the sealed enclosure of the ultrasonic unit of the in-line flaw detector to detect randomly oriented defects, it is connected to power sources and control signals, when On the outer surface of the sealed enclosure, N unfocused immersion piezoelectric transducers are located to detect flax oriented defects. 2 An ultrasonic block of an in-tube flaw detector for detecting randomly oriented defects, consisting of a sealed enclosure according to claim 1, characterized in that on the outer surface of the sealed enclosure there is a combined installation of piezoelectric transducers: not focusable and focusable, with an expanded radiation pattern in the horizontal plane.

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