RU15223U1 - IN-TUBE MULTI-CHANNEL PROFILEMER (OPTIONS) - Google Patents

Description

Description of utility model. G01B7 / 28, G01B7 / 13, G01B7 / 12

In-tube multi-channel profiler (options).

The utility model relates to devices for in-line non-destructive testing of pipelines, namely, to control the cavity profile of laid oil and gas pipelines by allowing devices inside the pipeline to be monitored to measure defects in the cavity of the pipeline, and to process and store measurement data moving inside the pipeline due to transported by pipeline fluid flow (gas).

A device for detecting deformed sections of pipes and pipelines (single-channel profiler) described in A.S. USSR SU1768941, IPC: O01V7 / 12, publication date 10/15/92.

The device includes a housing for passing inside the controlled pipeline, means for measuring, processing and storing measurement data installed on the housing, a plurality of sensitive levers mounted on the housing around the main axis of the housing, pressed by springs to the inner surface of the pipeline and sliding along the specified surface, mounted on the housing two elastic cuffs on opposite sides of the belt of levers.

The levers are kinematically connected with two disks, which in turn are kinematically connected with sensors of mutual displacement of the disks. The deviation of any of the sensitive levers leads to a change in the distance between the disks, which is measured using rheostat sensors. Measuring

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the distance between the disks, determine the presence of deformation in the cross section of the pipeline.

However, according to the data on the distance between the disks, the orientation of the defect in the cross section of the pipeline cannot be determined, and the difference between the deformation of the pipe and the presence of, for example, an object welded into the pipe cannot be identified. In addition, as a result of repeated turns, the contacts of the rheostatic sensors change their properties, especially when used in an aggressive environment, as a result of which the sensor readings become unstable.

A device for accurate measurement of the shape of a cylindrical surface is described, described in US patent US4186494, IPC: C01B7 / 12, publication date 05.02.80, (patent documents - analogues: DE2810552, FR2383426, GB1585443), as well as a device for measuring the internal dimensions of pipes, described in US patent US5299359, IPC: C01B7 / 12, publication date 04/05/94 (patent document - analogue: EP0307383).

Both devices belong to multichannel profilers and include a housing with cuffs installed on it with a diameter smaller than the diameter of the controlled pipeline for passing inside the controlled pipeline, measuring instruments installed on the housing, many sensitive levers axisymmetrically mounted on the housing along its perimeter in the pipeline section, pressed by springs to the inner surface of the pipeline and sliding along the specified surface. Each of the levers is kinematically connected with its corresponding displacement sensor. The signals from the displacement sensors corresponding to a change in the position of the sensitive levers are processed by the processing means.

installed in the body of the profiler and transferred to storage media located outside the body of the profiler.

The need to connect the profiler with the means for storing the measured data limits the length of the pipeline, which can be monitored and makes it impossible for in-line monitoring of the main pipelines.

The gaps between the levers exceed the width of the levers at the point of contact of the levers with the inner surface of the pipeline, as a result of which many local defects, the size of which in the plane of the pipe section is smaller than the gap between the levers, are not recorded.

Known in-line leak detector for monitoring pipelines for integrity, described in US patent US3974680, IPC: C01MZ / 00, publication date 17.08.76 (patent documents - analogues: CA1055138, DE2622600, FR2312726, GB1547301, IT1061312, JP1144689, NL7605706).

The device includes a housing for passing inside the controlled pipeline. Measurement and storage of measurement data are installed on the case. The casing consists of two movably connected sections; two cuffs are installed on each of the casing sections. In the second section, in the direction from the nose of the body around the main axis of the specified section of the body, there are many levers that are sensitive to irregularities in the surface of the pipe, such as welds, pressed by springs to the inner surface of the pipeline, so that three levers are installed in front of the belt of arms in the direction from the nose of the body cuffs. The nose of the first section of the profiler housing with the cuff installed on it first from the nose of the housing forms a blank wall. The region of the transported medium between the first and second cuffs communicates with the region of the transported medium after the second cuff through

through holes in the second cuff, with the area after the fourth cuff through the holes in the profiler housing and with the area between the third and fourth cuffs through the valve.

Magnets are mounted in the body of the levers. On the housing around its main axis there are many sensors that are sensitive to the magnetic field near the levers, so that each sensor is sensitive to a change in the position of its corresponding lever (six recording channels). The space between the lever magnet and the magnetic field sensor can be filled with the medium transported through the pipeline during the control process.

The described system is characterized by a strong nonlinearity of the magnetic field in the region of the magnetic field sensor, depending on the distance between the magnet and the magnetic field sensor. The readings of the magnetic field sensor depend on the medium transported inside the pipeline, in particular during the pumping of contaminated liquid or when mixing in the transported oil peeled off cuffs from the pipe walls of paraffins, which usually contain garbage. The ingress of iron-containing debris into the indicated space together with the transported medium makes it impossible to perform correct measurements.

A device for controlling internal geometry (multichannel profiler) is described in US Pat. NO157313C, NO812763, ZA8105628).

In one of the described preferred embodiments, the device includes a housing for passing inside the controlled pipeline, measuring instruments and storing measurement data, a belt of sensitive levers.

axisymmetrically mounted on the housing around the perimeter in the cross section of the pipeline, pressed by springs to the inner surface of the pipeline and sliding along the specified surface, two cuffs are installed on the housing on opposite sides of the belt of sensitive levers.

In another preferred embodiment, the device includes a housing for passing inside the controlled pipeline, measuring instruments and storing measurement data. The housing consists of two sections movably interconnected. On the first section, in the direction from the bow of the body, a belt of sensitive levers is installed around the main axis of the first section, pressed by springs to the inner surface of the pipeline and sliding along the specified surface. The first section has two cuffs on opposite sides of the belt of sensitive levers.

The second section has three belts of sensitive levers around the main axis of the second section, pressed by springs to the inner surface of the pipeline and sliding along the specified surface. Two cuffs are installed on the second section, so that one cuff is installed in front of the first and second lever belts in the direction from the bow of the second section, and two cuffs are installed in front of the third lever belt.

In both preferred embodiments, the sensitive arm includes a coil sensitive to a magnetic field and is an element of an angle-of-rotation angle sensor including an alternating magnetic field source. The space around the sensing coil can be filled with piped medium.

A source of alternating magnetic field has a large power consumption in comparison with the power consumed by electronic means of measuring and storing data. In conditions of limited source capacity

power supply and a large number of measuring channels (respectively, a large number of angle sensors), this limits the maximum length of the main pipeline, which can be examined in one diagnostic pass.

The sensor readings depend on the medium transported inside the pipeline, in particular during the pumping of contaminated liquid or when mixing in the transported oil peeled off cuffs from the pipe walls of paraffins, which usually contain garbage. If the coil in the arm of the iron-containing debris enters the region of the magnetic field sensitive together with the transported medium, it leads to a distortion of the electromagnetic field and, accordingly, to a distortion of the measurement results of the field change caused by the rotation of the sensitive lever.

A device for monitoring pipelines (multichannel profiler) is described in International Application WO96 / 13699, IPC: C01B7 / 28, publication date 05/09/96

In one preferred embodiment, the device includes a housing for passing inside the controlled pipeline, measuring instruments and storing measurement data, a belt of sensitive levers mounted on the housing around the main axis of the housing, pressed against the inner surface of the pipeline and sliding along the specified surface, two are mounted on the housing cuffs on different sides of the belt of sensitive levers.

Closest to the claimed utility model is another preferred embodiment of the device described in the aforementioned International Application WO96 / 13699, which includes a housing for passing inside a controlled pipeline, measuring instruments, processing and storage of the obtained measurement data. The housing consists of two movable

interconnected sections. On the first section, two cuffs are installed in the direction from the bow of the body.

On the second section, there is a belt of sensitive levers around the main axis of the second section, pressed against the inner surface of the pipeline and sliding along the specified surface, as well as many angle sensors. In the second section, after the belt of levers in the direction from the bow of the body, a cuff is installed. Each of the sensitive levers is kinematically connected with a rotation angle sensor, the nose of the profiler housing with the cuff installed on it first from the nose of the housing forms a blind wall, the surface of the first cuff at the point of contact with the inner surface of the pipeline forms a continuous contact area.

The angle sensor includes a single-turn potentiometer with a plastic conductive element.

As a result of repeated turns of the potentiometer, the contacts change their properties, especially as a result of use in an aggressive liquid or gas-liquid mixture, as a result of which the sensor readings become unstable.

The gaps between the levers exceed the width of the levers at the point of contact of the levers with the inner surface of the pipeline, as a result of which many local defects, the size of which in the plane of the cross section of the pipeline is less than the gap between the levers, are not recorded.

Passing by the profiler of defects on the inner surface of the pipeline, such as, for example, foreign objects (welded pipe, bent backing ring) causes the cuff to bend with gaps between the cuff, the defective location and the inner surface of the pipeline. IN

The result is a change in the distribution of pressure and temperature of the transported medium between the cuffs, which is especially characteristic of gas pipelines. A change in the temperature of the sensors at the time of passage of the defects leads to errors in measuring the size of the defects causing such changes.

Declared in-line profiler (options):

1. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the rotation angle sensor includes connected to the media measurement, the Hall sensor is sensitive to the rotation of the specified lever.

2. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and storage of data, characterized in that the power source includes a constant voltage source ka, steering angle sensor includes a sensor for rotation of said lever member, inputs

which are connected to a direct current source, and the outputs are connected to measuring instruments.

3. In-pipe profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data is installed on the housing of the profiler , a power source connected to measuring instruments, processing and data storage, characterized in that the lever is connected to a pair of magnets, the angle sensor rota includes means connected to the measuring sensor, which is sensitive to a change in position of said pair of magnets during rotation of the sensor lever.

4. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that on the metal part of the corus of the profiler, I contact In addition to the transported medium, a temperature sensor is installed connected to the measuring instruments.

5. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage is installed on the housing of the profiler

obtained measurement data, a power source connected to measuring instruments, processing and data storage, characterized in that a temperature sensor connected to measuring instruments is installed on the profiler case, the distance between the temperature sensor and the angle sensor does not exceed 0.6 of the pipeline diameter.

6. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that two temperature sensors are installed on the profiler housing When connected to measuring instruments, the distance between these sensors in the projection onto the main axis of the pipeline is 0.2-1 of the diameter of the pipeline.

7. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that on the profiler housing is installed connected to temperature sensor, the specified temperature sensor is installed in the hole made in the metal part of the profiler case and filled with a compound.

8. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the angle sensor is made in a sealed enclosure and ki nematically connected to the sensitive lever using a connecting rod.

9. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage, characterized in that the rotation angle sensor includes a sensitive to the gate of the specified lever is an element whose outputs are connected to voltage measuring instruments, the voltage at the outputs of the specified element is directly proportional to the angle of rotation of the sensitive lever, so that the deviation of the proportionality coefficient from the average value does not exceed 1%.

10. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring, processing and storage

received measurement data, a power source connected to the measuring, processing and data storage means, characterized in that the rotation angle sensor includes a magnet associated with the lever, and an element sensitive to the magnetic field of the specified magnet, the outputs of the specified element are connected to the measuring means voltage, cutoff frequency of the magnetic field of the specified element is not less than 500 Hz.

11. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage, characterized in that the rotation angle sensor includes a magnet associated with by a sensitive lever, and an element sensitive to the magnetic field of the specified magnet, the outputs of the specified element are connected to voltage measuring instruments, the cutoff frequency of the magnetic field of the specified element is not more than 10 kHz.

12. In-pipe profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to the measurement, processing and storage of data, characterized in that the angle sensor includes at least one magnet connected to the sensitive arm and a sensor connected to the measuring instruments

the magnetic field of the specified magnet, the magnet is made of a neodymium-iron-boron alloy.

13. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the rotation angle sensor includes a pair of magnets, communication data with a sensitive lever, and a magnetic field sensor connected to the measuring instruments in the gap between the indicated magnets, the magnetic induction in the specified gap is at least 0.7 T.

14. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing Sensitive levers have two elastic cuffs, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, the surface of the first cuff at the point of contact with internal

the surface of the pipeline forms a continuous contact pad, characterized in that the length of the specified contact pad of the first cuff in the direction of the main axis of the pipeline is at least 0.05 of the diameter of the pipeline.

15. In-pipe profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing Sensitive levers have two elastic cuffs, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, the surface of the first cuff at the point of contact with the inner surface of the pipeline forms a continuous contact pad, characterized in that the length of the specified contact pad of the first cuff in The main axis of the pipeline is not more than 0.3 of the diameter of the pipeline.

16. In-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring, processing and storage

received measurement data, a power source connected to the measuring, processing and data storage means, two elastic cuffs are installed on the profiler case in front of the belt of sensitive arms closest to the nose of the profiler case, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline , the nasal part of the profiler case with the cuff specified first from the nasal part installed on it forms a blind wall, characterized in that the of the transported medium between the first and second cuffs is communicated with the transported medium after the second cuff through the through holes in the second cuff and / or through the holes in the profiler housing, the distance between the nearest planes of the first and second cuffs in the pipe sections passing through the contact points of the first and the second cuff, respectively, with the inner surface of the pipeline, is 0.4-1 diameter of the pipeline. 17. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing Two flexible cuffs are installed in the catheter of sensitive levers, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the cuff installed first from the nose forms a blank wall.

characterized in that the region of the transported medium between the specified first and second cuffs communicates with the region of the transported medium after the specified second cuff through the through holes in the second cuff and / or through the holes in the profiler housing, the total passage section of these holes in the cuff and / or in the profiler housing is 0.0010.01 of the bore of the pipeline.

18. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed in the catheter of sensitive levers, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the cuff specified first from the nose forms a blank wall, characterized in that the region of the transported medium between the specified first and second cuffs communicates with the region of the transported medium after the specified second cuff through the through holes in the second cuff and / or through holes in the caliper body, the diameter of said first sleeve section to the largest diameter at a position outside caliper 1,02-1,05 pipe is the pipe diameter. 19. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, at least one file

belt of sensitive levers axisymmetrically mounted on the housing along the perimeter in the cross-section of the pipeline, pressed against the inner surface of the pipeline, with regular gaps between the sensitive levers, a plurality of angle sensors for the rotation of these sensitive levers, measuring instruments, processing and storage of the obtained measurement data are installed on the profiler housing power supply connected to the measuring, processing and data storage means, characterized in that a second jar of sensitive levers, so that the belts are spaced along the main axis of the pipeline, at the point of contact of the levers with the inner surface of the pipeline, the gaps between the levers do not exceed the width of the levers in the plane of the cross section of the pipeline, the belts are oriented to each other with an offset around the main axis of the pipeline, so that the levers of the two belts are completely overlap the inner surface of the pipeline. 20. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, at least one belt of sensitive levers axisymmetrically mounted on the housing along the perimeter in the cross section of the pipeline, pressed against the inner surface of the pipeline, with regular gaps between the sensitive arms, on the housing a profiler, a plurality of angle sensors of said sensitive levers, measuring instruments, processing and storage of the obtained measurement data, power supply connected to measuring, processing and data storage, characterized in that a second belt of sensitive levers is installed on the profiler case, the number of sensitive levers in each of these belts is at least 16.

The technical result common to all the options achieved by implementing the utility model is to increase the reliability and stability of measurements of the pipeline profile, especially when monitoring the cavity of main gas pipelines in the presence of foreign objects and similar defects in the cavity profile of the controlled pipeline.

In one preferred embodiment, an in-line profiler is declared for monitoring the profile of a pipeline cavity, including a housing for passing inside the pipeline, at least one belt of sensitive levers axisymmetrically mounted on the housing around the perimeter in the section of the pipeline, pressed against the inner surface of the pipeline, with regular intervals between the sensitive levers, on the body of the profiler there are many sensors of the angle of rotation, measuring instruments, processing and storage of received data from Eren, a power source connected to the measurement means, processing and storing data, each of the sensing levers is kinematically associated with the corresponding rotation angle sensor.

The specified rotation angle sensor is made in a sealed enclosure and includes a pair of permanent magnets and a Hall element located in the gap between the magnets, this pair of magnets is kinematically connected to the sensing lever and is able to rotate around an axis passing through the Hall element, the power source is connected to the element inputs Hall, measuring instruments include voltage measuring means on the Hall element connected to the outputs of the Hall element.

The rotation angle sensor based on the Hall element, which is sensitive to the rotation of a pair of magnets around an axis passing through the Hall element, avoids the problems associated with the instability of contacts in potentiometers.

The design of the sensor in a sealed enclosure avoids the ingress of iron-containing debris in the transported medium into the working area of the sensor between the magnets and the Hall element. The permanent magnets used in the sensor do not require energy consumption from a power source, the capacity of which is limited, and the location of the Hall element in the gap between the magnets allows you to obtain a voltage at the outputs of the Hall element proportional to the angle between the lines of a uniform magnetic field in the gap of the magnets and the plane of the Hall element.

However, the Hall element is characterized by high temperature sensitivity. When monitoring pipelines with a length of more than 300 km, changes in the temperature of the transported medium can be more than 20 ° C, this is especially true for monitoring pipelines, where temperature changes can be several tens of degrees. In addition, with a change in the nature of the flow of medium between different regions formed by cuffs, rapid changes in temperature and temperature gradients between different parts of the profiler housing can take place.

A temperature sensor is installed on the body of the profiler, connected to measuring instruments, a temperature sensor and angle sensors of the indicated belt of levers are installed on the common metal part of the body of the profiler.

The installation of a temperature sensor on the metal part of the profiler case, common with rotation angle sensors made in sealed cases, allows you to measure a temperature close to the temperature of the element

Hall in the angle sensor, damping sudden changes in the temperature of the Hall element and the temperature gradients of the Hall elements between the various angle sensors. Temperature measurement simultaneously with measurements using the angle sensors allows, using the temperature dependence of the readings of the angle sensor, to make adjustments to the measured and stored data after performing a diagnostic pass profiler.

Two elastic cuffs are installed on the profiler case in front of the closest (first) to the nose section of the profiler case sensitive levers (in the direction from the nose part of the profiler case), the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline. Pipeline diameter refers to the nominal internal diameter of the pipeline being monitored.

These cuffs align the profiler case in a controlled pipeline and provide a pressure differential in front of the cuffs and after the cuffs in the direction from the nose of the profiler case, which drives the profiler case.

However, if there is a local defect in the pipeline wall (a welded pipe, a bent back ring) that protrudes deep into the pipeline, when passing the profiler, such a defect causes the cuff to bend towards the tail of the profiler and create a gap between the edge of the cuff and the inner surface of the controlled pipeline. The appearance of such a gap leads to a change in the distribution of pressure and temperature in front of the cuff and after the cuff, associated with changes in the flows of the transported medium and in the speed and nature of the movement of the profiler body. Such changes, in turn, can lead to changes.

temperature gradients in the areas of the transported medium adjacent to the body of the profiler, and elements of the profiler for the passage of the specified defect. Meanwhile, it is at this point in time that the correct measurements of the size of the defect should be performed.

In the claimed utility model, the nose of the profiler housing with the first cuff (the two of the two indicated above) installed on it indicates the blind wall, the region of the transported medium between the first and second cuffs communicates with the region of the transported medium after the second cuff through the through holes in the second cuff and / or through the holes in the body of the profiler. The temperature sensor and rotation angle sensors are installed on the common metal part of the profiler housing in contact with the transported medium in the area after the second cuff in the direction from the nose of the profiler case. The temperature sensor is installed after the cross section of the largest diameter of the second cuff.

These features provide buffering temperature changes in the area of the rotation angle sensors and the temperature sensor. So, the maximum pressure drop takes place on the first cuff from the nose. And the difference in pressure between the first and second cuffs and the pressure after the second cuff due to communication between the regions is negligible.

When the first cuff is bent, the temperature redistribution process mainly affects the region between the first and second cuffs, and the pressure and temperature of this region become close to the pressure and temperature in front of the first cuff.

With the subsequent bending of the second cuff, the pressure and temperature of the region between the first and second cuffs become close to the pressure and

temperature after the second cuff due to the limited area between the first and second cuffs. The residual deviation of the parameters of the medium in the region between the first and second cuffs from the steady-state values decreases with time due to the communication between the indicated region and the region of the transported medium after the second cuff.

Due to local defects on the inner surface of the pipeline, in particular welds, the cuffs adhere to the inner surface of the pipeline with some gaps, the size of which varies depending on the nature of the surface smoothness defect. The presence of regular defects, such as welds, leads to a change in the pressure drop on the first cuff compared to the pressure drop for a smooth pipe surface. In order to exclude the influence of such defects in the claimed utility model, the surface of the first cuff at the point of contact with the inner surface of the pipeline forms a continuous contact area, the length of the specified contact area of the first cuff in the direction of the main axis of the profiler case is at least 0.05 of the nominal diameter of the pipeline.

In development of the claimed utility model, it is advisable that the distance between the nearest planes of the first and second cuffs in the pipeline sections passing through the contact points of the first and second cuffs with the inner surface of the pipeline be 0.4-1 of the nominal diameter of the pipeline. Since a smaller distance between the cuffs leads to the fact that for a significant part of the defects, both cuffs turn out to be bent, and a sharp change in temperature in the area of the angle sensors is possible, and a larger value reduces the efficiency of buffering and

limits the passability of the profiler inside the pipeline, especially on the bends of the pipeline.

In development of the claimed utility model, a second belt of sensitive levers is installed on the profiler case, so that the belts are spaced along the main axis of the pipeline, at the point of contact of the levers with the inner surface of the pipeline, the intervals between the levers do not exceed the width of the levers in the plane of the pipeline section, the belts are oriented with an offset around the main axis of the pipeline, so that the levers of the two belts completely overlap the inner surface of the pipeline.

This design eliminates the possibility of non-detection of small elements in the cross section of the pipeline, deepening inside the pipeline and posing a danger to ultrasonic or magnetic in-line profilers, which can be used to monitor the condition of the material of the wall of the pipelines after checking the profile of the pipeline using the declared profiler.

It is advisable that the total bore of these holes in the second cuff and / or in the body of the profiler is 0.001-0.01 bore of the monitored pipeline of nominal diameter.

A lower value increases the steady-state pressure drop in front of the second cuff and after the second cuff and reduces the pressure drop in front of the first cuff and after the first cuff, which reduces the efficiency of buffering. A larger value leads to the fact that the change in pressure and temperature in the region between the first and second cuffs when the first cuff is bent leads to a corresponding change in the region after the second cuff at the same time.

in the further development of the utility model, the diameter of the first cuff in the cross section of the largest diameter in the profiler position outside the pipeline is 1.02-1.05 of the nominal diameter of the controlled pipeline, the length of the indicated contact pad of the first cuff in the direction of the main axis of the pipeline is not more than 0.3 of the nominal diameter of the pipeline .

When the diameter of the cuffs is less than the specified, the cuff's tightness to the inner surface of the pipeline decreases, which reduces the pressure drop across the first cuff. A larger value of the diameter of the cuff leads to uneven deformation of the cuff and, consequently, to uneven fit of the cuff to the inner surface of the pipeline and reduce the pressure drop across the first cuff.

A larger value of the length of the contact area leads to an increase in the gap between the cuff and the pipe wall as a result of uneven deformation of the cuff when it is bent and, accordingly, to an increase in the flows of the transported medium, additional to those established between the regions before the first cuff and after the first cuff.

It is advisable to implement the claimed utility model, in which two temperature sensors are installed on the profiler case after the cross section of the largest diameter of the second cuff in the direction from the nose of the profiler case, the distance between these sensors in the projection on the main axis of the pipeline is 0.2-1 of the nominal diameter of the pipeline, the distance between one of the temperature sensors and any of the sensors of the angle of rotation of the previously sensing levers closest to the bow of the belt does not exceed 0.6 of the nominal and pipe diameter.

in the indicated arrangement of temperature sensors, one of the sensors measures the temperature of the rotation angle sensors, when installing the sensor as described above, the steady-state gradient between the temperature of the temperature sensor and the temperature of the rotation angle sensors does not exceed several degrees and with a characteristic temperature coefficient of the magnetic sensitivity of the Hall element (not more than 0, 1%) is sufficient to measure the angle of rotation of the levers with an accuracy of 1%. The second temperature sensor allows you to measure the temperature gradient with a sharp change in temperature, which can be taken into account taking into account the location of the second temperature sensor when adjusting the measured values of the rotation angles of the sensitive levers taking into account the temperature dependence of the angle sensors.

In further development of the claimed utility model, after the sensitive lever belt in the direction from the nose of the profiler case, a third elastic cuff is installed, the diameter of the specified cuff in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the nominal diameter of the controlled pipeline, the region of the transported medium between the second and third cuffs in the direction from the bow of the body communicates with the region of the transported medium after the specified third cuff through the through holes ment in a third cuff and / or through holes in the caliper body, the total flow area of said openings in the cuff and / or in the caliper body is not less than 0,003 the flow cross section controlled by the nominal diameter of the pipeline.

In further development of the claimed utility model with two belts of sensitive levers, two belts are separated by a third elastic cuff.

after the second from the nose part of the case of the profiler of the belt of sensitive levers a fourth elastic cuff is installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the nominal diameter of the controlled pipeline, the region of the transported medium between the second and third cuffs in the direction from the nose of the body of the profiler communicates with the area of the transported medium after the specified third and after the specified fourth cuff through the through holes in the third and / or in the fourth cuff and / or through holes in the caliper body, the total flow area of said openings in the cuffs and / or in the caliper body is not less than 0,003 the flow cross section controlled by the nominal diameter of the pipeline. The angle sensors of the second lever belt and the temperature sensor are installed on the common metal part of the profiler housing in contact with the transported medium in the area after the second cuff in the direction from the nose of the profiler case. The temperature sensor is installed after the cross section of the largest diameter of the second cuff.

The temperature sensor is installed in the hole in the previously indicated common metal part of the profiler housing and is filled with a compound.

In the further development of the utility model, the metal part of the sensing arm is kinematically connected with the angle sensors installed on the profiler housing using a connecting rod connecting the arm of the angle sensor with the link of the sensing arm, opposite the link formed by the free end of the sensing arm, the voltage at the outputs of the Hall element is directly proportional to the angle rotation of the specified sensitive lever, so that the deviation of the proportionality coefficient from the average does not exceed 1%.

The use of kinematic transmission allows structurally distributing the lever and the angle sensor, which is unavoidable for profilers designed to control pipelines of small diameter, for example, 12. It is preferable to implement the claimed utility model, in which the power supply includes a direct current source connected to the inputs of the Hall element . The cutoff frequency of the magnetic field of the used Hall element is not less than 500 Hz and not more than 10 Hz. The previously mentioned magnets are made of a neodymium-iron-boron alloy, the previously indicated pair of magnets is formed by two permanent magnets with a gap between the mutually parallel planes of the magnets. Magnetic induction in the gap of at least 0.7 T. The rotation angle sensor is made in a metal case, the sensor’s metal case includes magnetic and non-magnetic parts, the magnetic part of the sensor case is made of soft magnetic steel, the non-magnetic part of the sensor case is made of brass, bronze or stainless steel. The magnetic part of the sensor housing is kinematically connected with the sensitive lever and is able to rotate together with these magnets relative to the non-magnetic part of the sensor housing.

The specified version of the angle sensor provides a linear dependence of the voltage at the outputs of the Hall element on the angle of rotation of the sensitive arm.

Figure 1 shows the in-line profiler in general form;

figure 2 shows part of the in-line profiler in section with

mounted sensing levers, Hall sensors and sensor

Fig. 3 shows a part of an in-line profiler in a section with

mounted sensing levers, Hall sensors and sensor

temperature, view from the side of the nose of the profiler;

figure 4 shows a diagram illustrating the results of data processing,

obtained as a result of a diagnostic pass declared inner pipe

profiler.

In the course of research aimed at finding solutions that can improve the reliability of in-line profilers at ultra-large distances of trunk pipelines of more than 300 km, a series of in-line profilers for examining a pipe cavity with a nominal diameter of 10 to 56 were made. As a result of the studies, the location scheme and parameters of the angle sensors were found based on Hall elements, temperature sensors and buffer cuffs installed in front of the belt of sensitive levers, at which it decides set task. The developed profilers withstand pressure up to 80 atm., Have a throughput of about 75% of the diameter of the pipeline, operate at temperatures from -15 ° C to + 50 ° C, the minimum passable turning radius of about 1.5 of the diameter of the pipeline. Explosion protection types are implemented in the profilers. Flameproof enclosure, Intrinsically safe electrical circuit, Special type of explosion protection. The error in measuring the cross section of the pipeline is not more than 1% of the nominal diameter of the pipeline, the error in determining the location of a defect in the pipeline is not more than 25 cm, and the average current consumption of the profiler equipment is not more than 500 mA.

So, the profiler for inspection of the pipeline with a diameter of 48 includes: the housing 1 of figure 1 for admission inside the pipeline, position 2 in figure 1

the nose part 2 of the profiler body (bumper) is shown, the first 3 and second 4 belt of sensitive levers pressed against the inner surface of the pipeline are installed on the body. Each belt includes at least 16 sensitive levers. During the movement of the profiler inside the pipeline, the levers slide along the inner surface of the pipeline. An odometer 5 is installed on the body for measuring the length of the path traveled inside the pipeline and an electromagnetic marker transceiver 6 for determining the position of the profiler inside the pipeline. Polyurethane cuffs are installed on the housing 1 of the profiler (in the direction from the nose 2 of the profiler): first 7, second 8, third 9, fourth 10. The surface 11 of the cuffs contacts the inner surface of the pipeline and forms a continuous contact area with a length of 0.08 nominal diameter of the pipeline along axis of the pipeline. In the position of the profiler outside the pipeline, the diameter of the 12 cuffs in section 13 of the largest diameter is 1.022 of the nominal diameter of the pipeline. Cuffs provide centering of the profiler body in the pipeline and advancement of the profiler, creating a pressure drop of the transported medium in front of the body and after the profiler body. In a section of a pipeline of nominal diameter, the axis of symmetry of the body (the main axis of the body of the profiler) coincides with the main axis of the controlled pipeline. The housing includes airtight shells in which a power source is installed, as well as measuring, processing and storage means for the obtained measurement data on the basis of an on-board computer that controls the operation of the profiler during its movement inside the pipeline. Rechargeable batteries or batteries of galvanic cells with a capacity of up to 300 Ah are installed as a power source.

The nose part of the profiler case with the cuff installed on it from the nose part forms a blind wall, the region of the transported medium between the first and second cuffs communicates with the region of the transported medium after the second cuff through the through holes in the second cuff. In the second cuff, 8 through holes with a diameter of 20 mm each are made. The total bore of the holes in the second cuff is 0.002 bore of the controlled pipeline of nominal diameter.

The region of the transported medium between the second and third cuffs communicates with the region of the transported medium after the third cuff through the through holes in the third cuff. In the third cuff, 4 through holes with a diameter of 35 mm each are made, the total bore of these holes in the third cuff is 0.003 bore of the monitored pipeline of nominal diameter.

The region of the transported medium between the third and fourth cuffs communicates with the region of the transported medium after the fourth cuff through the through holes in the fourth cuff. In the fourth cuff, there are 8 through holes with a diameter of 25 mm each, the total bore of these holes in the fourth cuff is 0.003 bore of the monitored pipeline of nominal diameter.

The planes closest to one another, passing through the contact points of the first and second cuffs with the inner surface of the pipeline in the cross section of the pipeline, are designated 13 and 14. The distance between these planes is 0.43 of the nominal diameter of the pipeline.

In figure 2, the position 21 shows the direction of movement of the profiler inside the pipeline. Each of the sensitive levers 22 kinematically

connected to the corresponding rotation angle sensor 28. The sensitive lever 22 is mounted on the profiler housing on the axis of rotation 23 and is pressed against the inner surface of the pipeline by a spring 24. The link of the sensitive lever 25, opposite the free end of the sensitive lever, is kinematically connected via a connecting rod 26 to the lever 27 of the rotation angle sensor 28 mounted on the body of the profiler. The rotation angle sensor 28 is connected using electric cables 29 to a direct current source and to voltage measuring devices on the Hall element installed in the electronic module 210, made in a sealed enclosure. The angle sensor 28 converts the angle of rotation of the lever 22 into voltage. The temperature sensor 211 is installed in the same flange 212 of the profiler housing on which the angle sensors 28 are mounted. The flange 212 is in contact with the transported medium in the region between the second and third cuffs. The flange of the second belt of sensitive levers is in contact with the transported medium in the region between the third and fourth cuffs.

An Analog Devices AD22100 temperature sensor is used with a temperature range of up to 200 ° C, a temperature measurement error of not more than ± 2% on the entire scale, linearity not worse than ± 1% on the whole scale, with a temperature coefficient of 22.5 mV / ° C (10-100 mV / ° C). The inputs of the temperature sensor are connected to a direct current source, the outputs of the temperature sensor are connected to a voltage meter on the temperature sensor, which in turn is connected to the on-board computer.

Two temperature sensors are installed on the profiler case, the distance between the specified sensors in the projection on the main axis of the profiler case is 0.5 of the nominal diameter of the pipeline. One of the temperature sensors is installed on the body of the profiler 1 near the belt

levers 3 between the cuffs 8 and 9, another temperature sensor is installed on the housing 1 near the belt levers 4 between the cuffs 9 and 10. Each of the temperature sensors and angle sensors of the corresponding belt of sensitive levers are mounted on a common steel flange of the body of the profiler in contact with the transported medium . Temperature sensors are installed in the holes in the indicated flanges and are filled with a compound.

The rotation angle sensor is made in a sealed metal case and includes a pair of permanent magnets and a Hall element located in the gap between the magnets. A pair of magnets is kinematically connected with a sensitive lever and is able to rotate around an axis passing through the Hall element, a constant current source is connected to the inputs of the Hall element, a voltage meter on the Hall element is connected to the outputs of the Hall element.

The cutoff frequency of the magnetic field of the used Hall sensor is about 10 Hz. The magnets are made of a neodymium-iron-boron alloy, a uniform magnetic field is formed between the mutually parallel planes of the magnets, the magnetic induction in the gap is 0.9-1T. The metal housing of the sensor includes non-magnetic and magnetic parts that can rotate relative to one another, the magnetic part of the sensor body is made of steel 10, the non-magnetic part of the sensor body is made of stainless steel. A Hall sensor is used with a working temperature range of 1.5-500 K. The gaps 31 of Fig. 3 between the levers are 0.9 width 32 of Fig. 3 of the levers 22 in the place of contact of the lever with the inner surface of the pipeline. The belts are oriented to each other with an angle offset around the main axis of the pipeline half the angle between adjacent levers, so that the levers of two

belts completely overlap the inner surface of the pipeline, with each lever of the second from the bow of the belt overlapping adjacent levers of the first belt by 0.05 widths of the lever of the second belt in the cross section of the pipeline.

The means for measuring the length of the path traveled inside the pipeline are made in the form of two odometers installed on the body, connected to the counters of the number of odometer pulses, the number of which is proportional to the length of the path traveled by the odometers. On the case of the profiler is installed a sensor of the angle of rotation of the body of the profiler around the main axis of the pipeline, connected to the means of measuring the profiler.

The device operates as follows.

The profiler is placed in the pipeline and includes pumping the product (oil, gas, oil product) through the pipeline. When the profiler moves through the pipeline, the levers are pressed against the inner surface of the pipeline, in the presence of a defect in the cavity of the pipeline, the corresponding lever deviates from its normal position. Using the angle sensor, the angle between the lever and the main axis of the pipeline is measured. The measurement data are processed and recorded in the drive of the on-board computer, made on the elements of solid-state memory.

Upon completion of control of a given section of the pipeline, the profiler is removed from the pipeline and the data accumulated during the diagnostic pass is transferred to a computer outside the profiler. Adjustments are made to the measured data taking into account the temperature dependences of the rotation angle sensors based on Hall elements.

Figure 4 shows the results of processing the data obtained as a result of a diagnostic pass of an in-line profiler with frame size 48, for a certain section of the main pipeline. On the abscissa axis L, the pipeline length in meters is plotted, on the ordinate axis, Fi is the angle in degrees around the main axis of the pipeline, within one measuring channel on the ordinate axis, the decrease in the distance dD from the main axis of the body to the inner surface of the pipeline in the plane of the lever belt is scaled to 10 cm by one division of the ordinate axis. In the displayed area, transverse welds are identified near the marks of 8m, 10m and 13m, a slide gate valve near the mark of 9m, as well as a dent near the mark of 14m. Seams are characterized by a characteristic local narrowing around the entire perimeter in the pipeline section, a slide gate valve - by a characteristic expansion in the pipeline section along the entire perimeter, and a dent by a local narrowing in the pipeline section.

Based on the results of the control using the declared in-line tube profiler, a conclusion is drawn about the state of the cavity of the pipeline and the possibility of subsequent control of the material of the wall of the pipe using ultrasonic or magnetic in-line profilers.

Claims (20)

1. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the rotation angle sensor includes connected to the medium stvam measurements of the Hall sensor sensitive to the rotation of said lever.  2. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and storage of data, characterized in that the power source includes a constant voltage source OK, the angle sensor includes an element that is sensitive to rotation of the specified lever, the inputs of which are connected to a constant current source, and the outputs are connected to measuring instruments.  3. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the lever is connected to a pair of magnets, the angle sensor The orot includes a sensor connected to measuring instruments that is sensitive to a change in the position of the indicated pair of magnets when the sensitive lever is rotated.  4. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that on the metal part of the body of the profiler, the contact boiling with the fluid, a temperature sensor connected to means of measurement.  5. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that on the housing of the profiler is installed connected to the media you measuring sensor, the distance between the temperature sensor and the rotation angle sensor does not exceed 0,6 of the pipeline diameter.  6. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that two temperature sensors are installed on the profiler housing urs connected to the measuring means, the distance between said transducers as projected on the main axis of the pipeline is 0.2-1 pipeline diameter.  7. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that on the housing of the profiler is installed connected to the media you measuring temperature sensor, said temperature sensor is mounted in the hole formed in the metallic caliper housing portion, and potted.  8. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the rotation angle sensor is made in a sealed enclosure and to nematic associated with sensing lever via a rod.  9. In-line profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the body of the profiler, pressed against the inner surface of the pipeline, on the body of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring instruments, processing and data storage, characterized in that the rotation angle sensor includes sensitive to collar of said lever element, the outputs of which are connected to the voltage measuring means, the voltage at the outputs of said element in direct proportion to the rotation angle sensing lever, so that the coefficient of proportionality deviation from the mean did not exceed 1%.  10. In-line profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the body of the profiler, pressed against the inner surface of the pipeline, on the body of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage, characterized in that the rotation angle sensor includes a magnet connected lever and an element sensitive to the magnetic field of said magnet, said element outputs are connected to the voltage measuring means, the cutoff frequency of the magnetic field of said element is less than 500 Hz.  11. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage, characterized in that the rotation angle sensor includes a magnet connected sensing lever, and an element sensitive to the magnetic field of said magnet, said element outputs are connected to the voltage measuring means, the cutoff frequency of the magnetic field of the element is not more than 100 kHz.  12. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to the measurement, processing and storage of data, characterized in that the angle sensor includes at least one n magnet associated with a sensing arm and connected to measuring sensor magnetic field of said magnet, the magnet is made of an alloy of neodymium-iron-boron.  13. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage, characterized in that the rotation angle sensor includes a pair of magnets, connected OF DATA with sensor lever and connected to the means of measurement of the magnetic field sensor in the gap between the magnets, the flux density in said gap is not less than 0.7 tesla.  14. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, the surface of the first cuff at the point of contact with the inner surface of the pipeline forms a continuous contact pad, characterized in that the length of the specified contact pad of the first cuff in ION main axis of the conduit is not less than 0.05 diameter.  15. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, the surface of the first cuff at the point of contact with the inner surface of the pipeline forms a continuous contact pad, characterized in that the length of the specified contact pad of the first cuff in ION main axis of the conduit is not more than 0.3 of the pipeline diameter.  16. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for the passage inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, characterized in that the region of the transported medium between the specified first and second cuffs communicates with the region of the transported medium after the specified second cuff through the through holes in the second cuff and / or through openings in the caliper housing, the distance between adjacent planes of the first and second sleeves in the sections of the pipeline passing through the contact point of the first and second sleeves, respectively, with the inner surface of the pipeline, the pipeline diameter is 0.4-1.  17. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, characterized in that the region of the transported medium between the specified first and second cuffs communicates with the region of the transported medium after the specified second cuff through the through holes in the second cuff and / or through holes in the caliper body, the total flow area of said openings in the cuff and / or in the caliper body is 0.001-0.01 passage section of the conduit.  18. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, a sensitive lever mounted on the housing of the profiler, pressed against the inner surface of the pipeline, on the housing of the profiler there is a sensor of the angle of rotation of the specified lever, measuring instruments, processing and storage of the obtained measurement data , a power source connected to measuring, processing and data storage means on the profiler housing in front of the closest to the nose of the profiler housing two flexible cuffs are installed, the diameter of these cuffs in the cross section of the largest diameter in the position of the profiler outside the pipeline exceeds the diameter of the pipeline, the nose of the body of the profiler with the first cuff installed on it from the nose forms a blank wall, characterized in that the region of the transported medium between the specified first and second cuffs communicates with the region of the transported medium after the specified second cuff through the through holes in the second cuff and / or through holes in the caliper body, the diameter of said first sleeve section to the largest diameter at a position outside caliper 1,02-1,05 pipe is the pipe diameter.  19. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, at least one belt of sensing levers axisymmetrically mounted on the housing along the perimeter in the cross section of the pipeline, pressed against the inner surface of the pipeline, with regular gaps between the sensing arms, on the housing a profiler, a plurality of angle sensors of said sensitive levers, measuring instruments, processing and storage of the obtained measurement data, power supply connected to measuring, processing and data storage, characterized in that a second belt of sensitive levers is installed on the profiler case, so that the belts are spaced along the main axis of the pipeline, at the point of contact of the levers with the inner surface of the pipeline, the gaps between the levers do not exceed the width of the levers in the plane of the cross-section of the pipeline, the belts are oriented to each other with an offset around the main axis of the pipeline, so that the levers of the two belts completely overlap the inner surface of the pipeline a. 20. Intra-tube profiler for monitoring the profile of the cavity of the pipeline, including a housing for passing inside the pipeline, at least one belt of sensitive levers axisymmetrically mounted on the housing along the perimeter in the cross section of the pipeline, pressed against the inner surface of the pipeline, with regular gaps between the sensitive arms, on the housing a profiler, a plurality of angle sensors of said sensitive levers, measuring instruments, processing and storage of the obtained measurement data, power supply connected to measuring, processing and data storage, characterized in that a second belt of sensitive levers is installed on the profiler case, the number of sensitive levers in each of these belts is at least 16.