RU2772550C1 - Multi-channel measuring system for measuring the geometric profile of the pipeline - Google Patents

Abstract

FIELD: testing technology.

SUBSTANCE: invention relates to the field of non-destructive testing, namely, measuring deviations from a given nominal value of the geometric profile of the pipeline wall surface. The multichannel measuring system of the multichannel geometry tool contains measuring mechanical levers, each of which is equipped with a sensor, a device for converting the signal of the angular position of the rotating axis of the mechanical lever into linear movement of the contact spot of the mechanical lever with the pipeline wall, depending on the set base value, while the parameters of the signal conversion characteristics are included in the non-volatile data storage device, at the same time, the parameters of the signal conversion characteristic are recorded via a bidirectional digital interface, while the on-board electronics of the multichannel geometry tool receives direct measurements of the linear deviation of each measuring lever from the sensors and performs preliminary data processing in real time, during which the geometric dimensions of individual design features and pipeline defects are determined.

EFFECT: increase in the quality and a reduction in the time of in-line diagnostics of the geometric state of the profile of the pipeline wall surface.

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Description

Technical field

The invention relates to the field of non-destructive testing, namely, the measurement of deviations from a given nominal value of the geometric profile of the wall of pipelines or other extended objects.

State of the art

Known in-line profiler (patent No. 49221 RU, priority dated 11/10/2005, IPC G01B 7/12, F17D 5/00), containing a housing, elastic cuffs, a pipe section profile meter, at least one distance meter, a power source, an electronic system, while the cuffs are dish-shaped and installed on the body of the profiler, the power source and the electronic system of the profiler are installed in the body of the profiler, the electronic system of the profiler contains measuring tools and digital data processing, the pipe section profile meter contains at least one lever belt , fixed on the body of the profiler around its axis of symmetry and pressed against the inner surface of the pipe when the profiler is passed inside the pipeline being examined, the pipe cross-section profile meter also contains a lever rotation angle meter connected to the means of measuring the electronic system of the profiler, while each lever is made capable of rotating in the plane passing through the axis of symmetry of the profiler, around the axis passing through the point of attachment of the lever on the body of the profiler, the body of the profiler contains one section containing a sealed shell in which the electronic system of the profiler and a power source are installed; at least one conical elastic cuff is also installed on the body of the profiler, the length of which along its axis of symmetry is at least 0.4 of its outer diameter.

Known in-line multichannel caliper (patent No. 15223 RU, priority dated 06/26/2000, IPC G01B 7/28), including a body for passing inside the pipeline, a sensitive lever mounted on the caliper body, pressed against the inner surface of the pipeline, an angle sensor is installed on the caliper body rotation of the specified lever, a measuring instrument, processing and storage of the received measurement data, a power source connected to the measuring instruments, data processing and storage, characterized in that the rotation angle sensor includes a Hall sensor connected to the measuring instruments, sensitive to the rotation of the specified lever, characterized in that said lever is connected to a pair of magnets, the rotation angle sensor includes a sensor connected to the measuring instruments, which is sensitive to a change in the position of the said pair of magnets when the sensitive lever is rotated, characterized in that the rotation angle sensor is made in a sealed housing and is kinematically connected to feel by means of a connecting rod, characterized in that the angle of rotation sensor includes a magnet connected to the lever, and an element sensitive to the magnetic field of said magnet, the outputs of said element are connected to voltage measurement means.

Known in-line multichannel profiler (patent No. 2164661, priority dated 06/30/2000, IPC G01B 5/28, G01B 7/34, G01B 7/28, F17D 5/00, G01B 7/30), on the body of which a belt of sensitive levers is fixed, pressed against the inner surface of the pipeline. The housing contains means for processing and storing measured data, an odometer system and an electromagnetic marker transmitter for determining the position of the flaw detector inside the pipeline. Arm deflections are measured by Hall-element angle sensors with simultaneous temperature measurement of the sensors. Hall sensors are used with a passband cutoff frequency in the magnetic field of at least 200 Hz. In front of the belt of sensitive levers, two elastic cuffs are installed, tightly adhering to the surface of the pipeline. The area between the first and second cuffs communicates with the area after the second cuff through through holes in the cuff and/or body. The temperature control of the Hall elements allows you to make adjustments to the measurement data. The use of Hall sensors and the design of cuffs make it possible to increase the reliability and stability of measurements of the profile of the pipeline cavity in the presence of foreign objects and similar profile defects in it.

In-line multichannel profiler (patent No. 25218 RU, priority dated 20.09.2002, IPC G01B 7/28), including a housing for passage inside the pipeline, at least one zone of sensitive levers, axially symmetrically mounted on the housing along the perimeter in the pipeline section, pressed against the inner surface of the pipeline, with regular intervals between the sensitive arms, a plurality of sensors of the angle of rotation of these sensitive arms, measuring instruments, processing and storing measurement data, a power source connected to the measuring instruments, processing and storing measurement data, characterized in that it includes a generator alternating voltage connected to each of the rotation angle sensors, and the rotation angle sensors are made in the form of differential transformer sensors.

Known in-line multi-channel profiler (patent No. 131866, priority dated 02/01/2013, IPC G01B 5/00), including a housing with a sealed compartment and installed on it, at least, the front and rear centering elastic cuffs, an odometric device, at least one a belt of measuring levers, with one of its ends symmetrically fixed on the body along its perimeter in the cross section of the pipeline, elastically pressed by its other ends to the inner surface of the pipeline, with regular intervals between the measuring levers, a plurality of sensors for the rotation angle of said measuring levers, means for processing and storing measurement results , a power source connected to the means for processing and storing measurement results, characterized in that it includes at least one ring made of elastic material, for example, made of polyurethane, located in the peripheral region of the elastic cuff, behind it, which is evenly distributed along its perimeter strengthens to each of the indicated measuring arms and cuff protrusions, axisymmetrically located in the peripheral region of the rear surface of the elastic cuff between the measuring arms.

A device for measuring the internal profile of a pipeline is known (patent No. 2690973 RU, priority from 09/17/2018, IPC G01B 5/20, F16L 101/30), in which each lever system is equipped with an angular displacement sensor and a spring mechanism.

The prototype of the claimed invention is an in-line multichannel profiler (patent No. 2529820 RU, priority dated 03/12/2012, IPC G01B 7/28), which consists of at least one section, consisting of a body on which support disks are installed, suspension wheel blocks , cuffs and at least one belt of measuring spring-loaded levers, in addition, in the metal case of the in-line multichannel profiler there is a power source and an electronics section, which is a sealed shell with a battery pack, an electronics module, a strapdown inertial navigation system on based on fiber-optic gyroscopes and a system of micromechanical accelerometers, made in a uniaxial suspension; on-board information storage devices and a marker on-board transceiver.

The disadvantage of these technical solutions is that the conversion of the readings of the angular position of the axis of each lever into a linear deviation is carried out only in the process of processing the recorded data after the data is copied from the onboard information storage device to the memory of a personal computer. This does not allow real-time data pre-processing by the on-board electronics of the profiler.

Disclosure of the essence of the invention

The technical result of the claimed invention is to improve the quality and reduce the time of in-line diagnostics of the geometric state of the pipeline wall surface profile or diagnostics of the state of the surface profile of another extended object.

The technical result is achieved due to the fact that the multi-channel measuring system of the multi-channel profiler contains measuring mechanical levers, each of which is equipped with a sensor containing a sensitive element that measures the angular position of the rotating axis of the mechanical lever, a device for converting the angular position signal of the rotating axis of the mechanical lever into the linear movement of the contact patch mechanical lever k with the pipeline wall depending on the specified base value, while the parameters of the signal conversion characteristic are included in a non-volatile data storage device built into the sensor, while the parameters of the signal conversion characteristic are recorded via a bidirectional digital interface, while the sensors are connected in groups of N pieces to unifying modules that provide merging of received individual data into a single package of the same format, having N + 1 identical bidirectional digital interfaces, one of which serves to connect to the on-board electronics inside the sealed section of the multi-channel profiler, while the on-board electronics of the multi-channel profiler receives direct measurements of the linear deviation of each measuring arm from the sensors and performs a preliminary data processing in real time, during which the geometric dimensions of individual design features are determined and pipeline defects.

In the development of the invention, several hermetic sections of a multichannel profiler are used, while the sensors are connected in groups of N pieces to the unifying modules, forming a tree-like connection structure.

The design features of the pipeline are transverse welds.

In the development of the invention, the claimed invention is part of a multi-channel profiler together with a magnetic measuring system.

In the development of the invention, the claimed invention is part of a multi-channel profiler together with an ultrasonic measuring system.

Brief description of the drawings

In FIG. 1 shows a prototype of the claimed invention.

In FIG. 1 adopted the following designations:

1. Wall of the pipeline.

2. Measuring mechanical arm.

3. Rotating axis of lever 2.

In FIG. 2 shows a diagram of the sensor.

In FIG. 2, the following designations are adopted:

3. Rotating axis.

4. Sensor.

5. Sensing element.

6. A device for converting the angular position signal of the rotating axis of the mechanical lever into linear displacement of the contact patch of the mechanical lever k with the pipeline wall, depending on the specified base value.

7. Non-volatile storage device.

8. Bi-directional digital interface.

In FIG. 3 shows a multi-channel measuring system for measuring the geometric profile of a pipeline.

In FIG. 3 adopted the following designations:

4. Sensor.

9. Unifying module.

10. Onboard electronics.

Implementation of the invention

The claimed multi-channel measuring system for measuring the geometric profile of a pipeline is part of an in-line multi-channel profiler and includes measuring mechanical levers 2 (Fig. 1), each of which is equipped with a sensor 4 (Fig. 2 and 3) containing a sensitive element 5 (Fig. 2), measuring the angular position of the rotating axis 3 (Fig. 1 and 2) of the mechanical lever 2 (Fig. 1), a device for converting the signal of the angular position of the rotating axis of the mechanical lever into a linear displacement of the contact patch of the mechanical lever with the pipeline wall, depending on the specified base value 6 (Fig. 2), while the signal conversion characteristics are included in a non-volatile data storage device 7 (Fig. 2) built into the sensor 4 (Fig. 2 and 3), while the parameters of the signal conversion characteristic are recorded through a bidirectional digital interface 8 (Fig. 2), while the sensors 4 (Fig. 2 and 3) are connected in groups of N pieces to the module unifying pits 9 (Fig. 3), providing the merging of the received individual data into a single package of the same format, having N + 1 identical bidirectional digital interfaces 8 (Fig. 2), one of which is used to connect to the on-board electronics 10 (Fig. 3) located inside the sealed section multichannel profiler, while the on-board electronics 10 (Fig. 3) of the multichannel profiler receives from sensors 4 (Fig. 2 and 3) direct measurements of the linear deviation of each measuring arm 2 (Fig. 1) and pre-processes the data in real time, in during which the geometric dimensions of individual design features and defects of the pipeline are determined.

The claimed invention implements the claimed technical result: improving the quality and reducing the time of in-line diagnostics of the geometric state of the pipeline wall surface profile, since data on the geometric state of the pipeline wall surface profile without the use of intermediate devices for recording, storing and subsequent interpretation of diagnostic data are read, recorded and stored in real-time mode, which improves the quality and reduces the time of in-line diagnostics of the geometrical state of the pipeline surface profile and its flow area.

Claims (5)

1. A multi-channel measuring system of a multi-channel profiler, containing measuring mechanical levers, each of which is equipped with a sensor containing a sensitive element that measures the angular position of the rotating axis of the mechanical lever, characterized in that the sensor contains a device for converting the angular position signal of the rotating axis of the mechanical lever into the linear movement of the spot contact of the mechanical lever with the pipeline wall depending on the specified base value, while the parameters of the signal conversion characteristic are included in a non-volatile data storage device built into the sensor, while the parameters of the signal conversion characteristic are recorded via a bidirectional digital interface, while the sensors are connected in groups of N units to unifying modules that provide merging of received individual data into a single package of the same format, having N + 1 identical bidirectional digital interfaces, one of the which serves to connect to the on-board electronics inside the sealed section of the multi-channel profiler, while the on-board electronics of the multi-channel profiler receives direct measurements of the linear deviation of each measuring arm from the sensors and performs preliminary data processing in real time, during which the geometric dimensions of individual design features and defects are determined pipeline. 2. The system according to claim 1, characterized in that several hermetic sections of a multichannel profiler are used, while the sensors are connected in groups of N pieces to the unifying modules, forming a tree-like connection structure. 3. The system according to claim 1, characterized in that the design features of the pipeline are transverse welds. 4. The system according to claim 1, characterized in that it is part of a multi-channel profiler together with a magnetic measuring system. 5. The system according to claim. 1, characterized in that it is part of a multi-channel profiler together with an ultrasonic measuring system.

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