RU1771834C - Device for cleaning inner pipeline surface - Google Patents

Abstract

Using the invention: the device can be used in the oil and gas industry for cleaning a pipe cavity. SUMMARY OF THE INVENTION: The magnetic strips are formed by a ring with a metal brush and oriented by the same poles to the metal brushes. Elastic scrapers are placed tangentially to the surface of the housing. 1 s.p. f-ly, 3 ill.

Description

A fig

The invention relates to devices for cleaning the internal surface of pipelines of electrode residues and other particles of ferrous metals and can be used in the oil and gas industry.

A pipe cleaning device is known which consists of magnesium, a tfgo tool pressed against a pipe wall. and brushes for treating the inner surface.

A drawback of this design is the low collection efficiency of various metal wastes remaining inside the pipelines during their construction.

The closest known device is a magnetic piston for cleaning the inner surface of a pipeline, comprising a rotatable cylindrical body with cuffs fixed to its front and tail parts, between which annular bands with permanent magnets are located on the body, on the surface of which are placed metal brushes.

The disadvantage of this design is that the location of the poles in the magnetic system, namely, one pole in the holder is directed towards the piston body, the other towards the periphery of the piston, and the magnet poles of the second holder are directed opposite to the poles of the first, provides a magnetization of the pipe wall between the poles , removes the magnetic flux into the body of the pipeline, which leads to the magnetization of individual particles from ferromagnetic materials to the wall of the pipeline and makes it difficult to collect it on the body of the magnetic piston. .

The aim of the invention is to improve the quality of cleaning.

To achieve this goal, the magnets in the poles are oriented by the poles of the same name towards the metal brushes, while the device is additionally arranged between the scrapers of elastic material arranged tangentially to the housing, in addition, the scrapers have a working edge on its leading end surface.

In contrast to the known device, the magnets are oriented by the poles of the same name to the body and to the outer surface of the piston, supported through the rings of brushes on the pipe wall, which creates two toroidal magnetic fields with the same poles. An inter-polar space is created, saturated with magnetic fluxes, sealed by the same-name poles of the adjacent magnets and, thanks to

saturation by fluxes of the portion of the magnetic conductor along the piston body from both magnets. To further enhance the separation of ferromagnetic litter from the surface

the pipeline between the poles of the magnets in the design provides scrapers made in the form of plates of non-magnetic material located on the housing tangentially to the plane of the cylinder so that

0 when rotating during the movement of the piston, they scrape along the wall of the pipeline. To facilitate overcoming obstacles inside the pipeline, the plates have a working edge at its inlet end surface.

The pole space saturated with the magnetic fluxes of two magnets is more active than in known constructions, attracts ferromagnetic

0 particles from the surface of the pipeline, filling the interpolar space during the rotation of the piston, which increases the cleaning efficiency in combination with scrapers that flood due to the acute angle

5 inclination of its particle planes to the piston body.

Figure 1 shows the proposed device with a cut; figure 2 is a section aa in figure 1; in Fig.3 is a view along arrow B on

0 figure 1.

A device for cleaning the inner surface of the pipeline contains a cylindrical body 1, at the ends of which there are flanges 2 with mounted on them

5 by elastic cuffs 3, serving and supporting, centering it in the pipeline, and a sail for movement along the pipeline.

A housing formed by a ring 4 and an end cheek 5 is placed on the housing 1, between which magnetic plates are used with the same pole orientation in both poles. Metal brushes 7 are fixed on the outside of the magnets 6.

5 In the rear part of the housing 1, a twisting device 8 is fixed behind the last cuff 3. On the housing 1, elastic scrapers 9 in the form of plates with a working

0 edge 10 at the front corner (Fig.Z).

The proposed device operates as follows.

The device for cleaning the inner surface of the pipeline moves inside

5 of the pipeline by the pressure of the transported medium in a spiral thanks to a twisting device 8 and elastic cuffs 3.

Ferromagnetic particles removed from the surface of the pipeline by metal

brushes 7 and pry off with scrapers 9, are attracted by strong toroidal fields of magnets 6 into the pole space to the housing 1.

Claims (2)

Claims t. A device for cleaning the inner surface of the pipeline, comprising a cylindrical body mounted rotatably about its axis with cuffs fixed to its front and tail parts, between which annular bands are arranged on the body 0 magnetic, on the surface of which there are metal brushes, characterized in that, in order to improve the quality of cleaning, the magnets in the poles are oriented by the poles of the same name towards the metal brushes, while the device is equipped with scrapers made of elastic material additionally arranged between them and mounted tangentially to case. 2. The device according to claim 1, with the exception that the scrapers have a working edge on its leading end surface. Aa Fi.2 View B YU - + ++ Fig.Z