RU181952U1 - In-pipe overlap - Google Patents

Abstract

The utility model relates to the field of repairs on main and field pipelines and can be used in the oil and gas industry. The technical result, which the utility model aims to achieve, is to provide the possibility of overlapping the pipeline section from two sides using two devices. The essence of the utility model lies in the fact that the in-pipe overlap contains anchors and a seal and differs in that the anchors have through holes made along the axis of rotation of the in-pipe overlap, 1 zp f-ly; 10 of FIG.

Description

The utility model relates to the field of repairs on main and field pipelines and can be used in the oil and gas industry.

Known in-pipe overlap containing anchors diametrically extended by a cylinder-piston group and a seal made in the form of a rubber elastically deformable ring [US7878221, publication date: 02/01/2011, IPC: F16L 55/128].

Known in-pipe overlap containing anchors located on a conical surface, driven by a cylinder-piston group and an elastically deformable ring seal [US2007023096, publication date: 02/01/2007, IPC: F16L 55/10].

As a prototype, an in-pipe overlap was selected, containing anchors made in the form of rods installed in cylinders and a seal made in the form of an elastically deformable annular element [US4991651, publication date: 12.02.1991, IPC: F16L 55/128].

The disadvantage of the prototype and known in-pipe overlaps is the inability to pass the medium flow through the surface of the extended in-pipe overlapping anchors, as a result of which it becomes impossible to use two (pushing and pushing) devices to block the pipeline section from two sides, since when pushing the in-pipe overlap stops, there is not enough pressure environment for movement along the pipe of the pushed in-pipe overlap, which greatly limits the fun National and scope of in-pipe overlap.

The technical problem that the utility model is aimed at is expanding the functionality and scope of the in-pipe overlap.

The technical result, which the utility model aims to achieve, is to provide the possibility of overlapping the pipeline section from two sides using two devices.

The essence of the utility model is as follows.

The in-pipe overlap contains anchors and a seal. Unlike the prototype, the anchors have through holes made along the axis of rotation of the in-pipe overlap.

In-pipe overlap provides the ability to cut off a section of oil or gas pipelines without installing valves and violating the integrity of the pipeline by fixing anchors inside the pipeline and sealing with a seal. In this case, the anchors and the seal can be driven by hydraulic, pneumatic or electromechanical systems. Hydraulic or pneumatic systems can be represented by pumps, valves and tubes and can have a closed or open circuit. The electromechanical system can be represented by a power source and electric motors. The in-pipe overlap may take the form of a cylinder or cone, the diameter of which is selected based on the internal diameter of the blocked pipeline.

Anchors provide the ability to stop and fix the in-pipe overlap due to frictional interaction arising between the surface of the anchors and the inner surface of the blocked pipeline.

The anchors have through holes made along the axis of rotation of the in-pipe overlap, which allows free passage of the medium flow through their surface in the extended state.

Through holes made along the axis of rotation of the in-pipe overlap provide the ability to connect the inner space of the pipeline behind the in-pipe overlap with the inner space of the pipeline before the in-pipe overlap and the medium passes through it. The implementation of through holes along the axis of rotation of the in-pipe overlap implies that mainly the holes are parallel to the axis of rotation of the in-pipe overlap, while they can be made at an angle to the axis of rotation and can be parallel to each other.

Through holes can be made parallel to the axis of rotation of the in-pipe overlap, which reduces the resistance to the flow of the transported medium. The number, shape and size of the through holes can be determined depending on the type, density or pressure of the transported medium, the required volume of the medium passed through the in-pipe overlap, the minimum structural strength of the anchors, the ratio of the diameter of the in-pipe overlap and the inner diameter of the pipeline and other parameters. The seal provides the ability to seal the gap formed between the in-pipe overlap and the inner surface of the blocked pipeline to stop the flow of the transported medium. The seal may be an elastically deformable ring-shaped element, an inflated reservoir, or sliding sickle-shaped segments.

All elements of the in-pipe overlap can be made of any kind of structural materials, for example, metal or composite materials.

The utility model has a previously unknown set of essential features, characterized in that the anchors have through holes made along the axis of rotation of the in-pipe overlap, which allows the medium to pass through the surface of the extended in-pipe anchors, allowing, when using two in-pipe overlays, to increase the flow of the medium through the fixed in-pipe overlap and push the non-fixed in-line overlap through the pipeline, so that the achievement of the technical result, which consists in providing the possibility of overlapping the pipeline section from two sides with the help of two devices, thereby expanding the functionality and scope of the in-pipe overlap.

The presence of new distinctive essential features indicates the compliance of the utility model with the patentability criterion of “novelty”.

The utility model can be made of known materials using known means, which indicates the compliance of the utility model with the patentability criterion of "industrial applicability".

The utility model is illustrated by the following drawings.

Figure 1 - In-pipe overlap, the anchors have two holes, the seal is made in the form of a hydraulic pumped chamber, cross section, front view.

Figure 2 - In-pipe overlap, the anchors have two holes, the seal is made in the form of a hydraulic pumped chamber, the connection is half of the view with half of the cut, side view.

Figure 3 - In-pipe overlap, the anchors have one hole, the seal is made in the form of an elastically deformable ring-shaped element driven by an electromechanical system, cross section, front view.

Figure 4 - In-pipe overlap, the anchors have one hole, the seal is made in the form of an elastically deformable ring-shaped element, driven by an electromechanical system, the connection of half view with half cut, side view.

Figure 5 - In-pipe overlap, the anchors have holes of small diameter, the seal is made in the form of an elastically deformable ring-shaped element driven by a hydraulic system, cross section, front view.

6 - Intra-pipe overlap, the anchors have holes of small diameter, the seal is made in the form of an elastically deformable ring-shaped element driven by a hydraulic system, the connection is half of the view with half of the cut, side view.

Fig.7 - Two in-pipe overlapping, moving with the flow of medium inside the pipe, side view.

Fig - Two in-pipe overlap, one of which is fixed inside the pipeline due to the extended anchors, the second continues to move along the pipeline with the flow of medium, side view.

Fig.9 - Two in-pipe overlap, fixed inside the pipe due to the extended anchors, side view.

Figure 10 - Two in-pipe overlap with activated seals, side view.

The in-pipe overlap 1 contains anchors 2 installed in the hydraulic cylinders 3, a seal 4 and rollers 5, while the anchors 2 have holes made along the axis of rotation of the in-pipe overlap 1.

The device operates as follows.

To repair the pipeline, two in-pipe overlays are used, which, when fixed in certain places of the pipeline, provide the possibility of cutting off a section of a pipeline of short length, providing the possibility of minimizing the amount of discharge of the transported medium into the environment.

In-pipe ceilings 1 and 6 are introduced into the pipeline 7, and they move with the flow of medium to the repaired area. Upon reaching the installation location, the anchors 3 are pulled out of the cylinders 3 and the in-pipe overlap 1 is fixed inside the pipeline 7. In this case, the medium flow freely passes through the openings of the extended anchors 3, providing a high pressure of the transported medium behind the in-pipe overlap 1, due to which the in-pipe overlap 6 is pushed further along the pipeline 7. The in-pipe overlap 6 reaches the installation site and is fixed in the pipeline 7 in the same way as the in-pipe overlap 1. In-pipe overlap 1 p rekryvaet fluid flow, a means for sealing-tube 4. 6 overlaps the overlap of the fluid flow moving ahead, in the same manner. The pipeline section 7 is sealed, from which the residual volume of the medium is discharged into the atmosphere, making it possible to carry out repair work on this section.

Thus, a technical result is achieved, which consists in providing the possibility of overlapping the pipeline section from two sides using two devices, thereby expanding the functionality and scope of the in-pipe overlap.

Claims (2)

1. In-pipe overlap containing anchors and a seal, characterized in that the anchors contain through holes made along the axis of rotation of the in-pipe overlap. 2. In-pipe overlap according to claim 1, characterized in that the through holes are parallel to the axis of rotation of the in-pipe overlap.

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