RU2789293C1 - Pipeline repair device - Google Patents

Abstract

FIELD: pipelines repair.

SUBSTANCE: device for pipeline repair is intended for carrying out emergency and restoration work in the process of eliminating leaks in existing high-pressure oil and gas pipelines both in emergency situations and when performing scheduled preventive repair work. The device comprises a housing, a tightening assembly, a locking assembly including a support element, a fixing element and a sealing element. The design of the device allows for complete sealing of leaks in the pipeline with welds applied to the body and shut-off unit, as well as to restore the mechanical strength of the repaired section of the pipeline. Due to the small weight and size characteristics of the pipeline repair device and the low effort required for its installation, it can be operated by one operator.

EFFECT: use of the device improves the quality and reliability of repairs.

11 cl, 5 dwg

Description

Technical field

The invention relates to the field of pipeline transport and technical means for eliminating leaks in pipes without stopping their operation. The device for pipeline repair is intended for carrying out emergency and restoration work in the process of eliminating leaks in existing oil and gas pipelines both in emergency situations and when performing scheduled preventive repair and restoration work. The use of the device for repairing the pipeline is possible in almost any place to be repaired in the pipeline under high pressure.

State of the art

It is known "Device for sealing a leak in a pipeline for transporting liquid" according to US patent US 8,978,709, published on March 17, 2015. The device comprises an elastomeric plate pressed against a leak due to a hole or a crack by a force distributor and tightening straps located around the pipe. The force distributor includes a support grid and force modules that deform the elastomeric plate so that it exactly fits the concave or convex shape of the pipe at the leak and thus seals the hole or crack. The device is applicable only for the repair of pipelines with relatively low pressure. Repair using this device is temporary, It does not exclude the further growth of the defect in the pipeline.

Known "Device for elimination of leaks" according to the patent for the invention of the Russian Federation RU 2206814, published 20.06.2003, which allows repair of pipelines and vessels under pressure. The device has a tension mechanism for fastening to the pipe and a sealing assembly made in the form of a cylindrical hollow body with lugs and a valve, in which an end groove is made to accommodate an elastic sealing element. The cylindrical body with the valve open is installed on the defective section of the pipeline and fixed on it with rods for the lugs. After the valve is closed, the medium from the pipeline through the defect enters the body cavity, pressing the seal and strengthening the seal. The defect zone is unloaded from internal pressure, which eliminates the growth of the defect. The device is not applicable for the repair of pipelines with high pressure. Repair using this device is temporary, aimed at eliminating an emergency and does not allow subsequent long-term operation of the pipeline.

It is known "Device for repairing pipes and a method for its operational fixing and final welding" according to the application for inventions US US 2022/0034441, published on 02/03/2022. It is designed to seal the leakage of liquid and restore the mechanical strength of the pipe. The device contains a two-component split ring, initially fixed by a compression unit, which allows longitudinal welding of the ring components in order to firmly fix it on the pipe through the holes in the compression unit before removing it. The final circumferential welding of the ring with the pipe is carried out after the removal of the compression unit. For a better fit of the inner surface of the ring to the pipe, the contact between them is carried out through a sealant inserted into the inner circular channel made in the ring. This eliminates the leak, normalizes the transportation of liquid in the pipe, and its tight coverage at the site of damage prevents further cracking, crevice corrosion, degradation and embrittlement of the pipe material. The device is not applicable for the repair of pipelines with high pressure of the transported liquid, as well as gas pipelines.

Known "Welded clamp for pipeline repair" according to US patent US 3,053,282, published 09/11/1962. This device allows you to stop the flow in the pipeline using an elastic seal, and then weld a metal patch over the leak. The device comprises a housing, including the first lower element and the second upper element with bushings attached to their ends, fastened together around the pipe with bolts and nuts. The second element of the housing is provided with a connecting unit, in the center of which there is a threaded hole, through which a screw element is passed from above. The patch is made in the form of a bowl-shaped element, with the inner surface of which an elastic seal is engaged. The elastic seal is pressed through the patch to the pipe at the leak site using a screw element. The patch is equipped with a side hole with an internal thread and a plug. This hole allows you to pump out the remaining liquid and control the quality of sealing the defect in the pipe by internal pressure. The device is not applicable for the repair of pipelines under high pressure due to the limited strength properties of the structure. It cannot be used in the field on main or field pipelines. The presence of means of monitoring the state of the device requires the presence of a technical room and maintenance personnel.

Known "Method of repairing an existing pipeline with local through defects and a device for its implementation", according to the patent for the invention of the Russian Federation RU 2267691, published on 10.01.2006. Based on the totality of common essential features, the technical solution for the specified patent for the invention was chosen as a prototype.

A device for repairing an existing pipeline with local through defects contains a housing, a tightening assembly, a locking assembly, including a support element, a fixing element and a sealing element.

The tightening assembly consists of a traverse, in which two holes are cut out for installing a clamp made of a metal bar with threaded threads at its ends. The nuts and washers screwed onto them are designed to press the clamp to the pipeline.

The housing is implemented in the form of a branch pipe placed between the traverse and the pipeline. It is equipped with a cover in the form of a hemispherical plug, which is welded into it from above using an annular weld.

The locking assembly includes a support element made in the form of a three-beam centering wheel welded to the branch pipe from the inside by welded seams. This wheel has a centrally located hole with an internal thread, in which a locking element is installed in the form of a rod with an external thread. The upper part of the stem has a square shape for vertical movement of the stem by rotating it with a socket wrench. A sealing element (sealant) is placed at the end of the lower end of the rod.

A method for repairing an existing pipeline with local through defects includes the following steps: cleaning the damaged area, assembling the tightening unit and the body with a shut-off unit on the pipeline near the through hole with a technological gap, moving the tightening unit and the body with the shut-off unit to the defect site, fixing the tightening unit on the pipeline , pressing the sealing element to the through defect due to the rotation of the rod in the support element, welding the body to the pipeline, welding the cover to the body and removing the tightening assembly.

The prototype allows you to repair the existing pipeline without stopping its operation.

The main disadvantage of the prototype is the limited or impossibility of its use for the repair of pipelines with high pressure. The relatively small dimensions (thickness and diameter) of the sealing element do not allow to achieve the necessary deformation of the sealing element so that it exactly matches the concave or convex shape of the pipe at the leak site and, thus, it is impossible to achieve a sufficient level of sealing of a through defect (holes or cracks) in the pipeline .

The prototype does not have a high quality of repair. The shear effect of the high pressure medium in the pipeline may exceed the strength of the relatively short weld that attaches the device body to the pipe, after removal of the tightening assembly. If the sealing element is not sufficiently sealed, the high pressure of the medium in the pipeline will have a destructive effect on the circumferential weld that fastens the cover to the body.

The prototype does not have a high reliability of repair. The device in the prototype is applicable to perform only local repair of a leak in a damaged pipeline - exclusively around the smallest hole that caused the leak. The process of corrosion of the inner wall of the pipeline, which led to the formation of one hole, can cause the formation of a new hole very close, only outside the area of the local repair of the first hole.

The essence of the invention

The use of this device for the repair of an existing pipeline ensures the repair of a high-pressure pipeline, improves the quality and reliability of the repair.

This positive effect is achieved due to the fact that

- the body is made of an upper half ring, in the central part of which a through round hole is made, and a lower half ring, which are tightly pressed and attached to the pipeline by a continuous circular weld superimposed on the side surfaces of the upper half ring and the lower half ring of the body and the outer surface of the pipeline, as well as a longitudinal a welded seam applied to the ends of the upper half ring and the lower half ring of the body adjacent to each other;

- tightening assembly includes plates attached from the outside to the ends of the upper and lower half-rings of the housing, with centrally located holes through which bolts equipped with nuts are passed;

- locking unit, contains

a supporting element made in the form of a metal straight circular hollow cylinder with an external disk-shaped protrusion in the central part, attached to the outer part of the upper half-ring of the body and covering a through round hole in the central part of the upper half-ring of the body,

a metal cover attached to the support element from above with a threaded connection,

a locking element, which is a metal straight cylinder placed inside the support element with the possibility of circular rotation and vertical movement along the longitudinal axis by means of a threaded connection, in the upper central part of which a recess with a figured cross section is made;

a sealing element located inside the support element under the fixing element, made of a dense elastic material in the form of a disk, the diameter of which is equal to the internal diameter of the support element.

In the pipeline repair device, a lower sealing ring is additionally installed, made of a dense resilient elastic material, located in an annular recess made outside the lower part of the fixing element.

In the pipeline repair device, an upper sealing ring is additionally installed, made of a dense elastic material, placed in an annular recess made in the lower end part of the metal cover.

In the pipeline repair device, a hole is made in the lower central part of the fixing element, into which a metal pin is inserted, onto which a sealing element is fitted, provided with a through central hole.

In the pipeline repair device, a circular recess is made in the lower central part of the fixing element, into which a sealing element is inserted, provided in the upper central part with a disk-shaped protrusion, the outer diameter and height of which are equal to the inner diameter and height of the circular recess in the lower central part of the fixing element.

In the pipeline repair device, a recess with a figured cross section, made in the upper central part of the fixing element, has the shape of a polyhedron.

In the pipeline repair device, spacers are additionally installed, attached from below to the ends of the plates of the upper half-ring and to the outer surface of the upper half-ring, as well as spacers attached from above to the ends of the plates of the lower half-ring and to the outer surface of the lower half-ring.

In the pipeline repair device, the upper part of the fixing element is attached to the upper part of the straight circular hollow cylinder of the supporting element by means of a continuous circular weld.

In the pipeline repair device, between the outer surface of the pipe of the pipeline being repaired and the inner surfaces of the edges of the closed upper half-ring and the lower half-ring of the body, longitudinal metal plates are installed, the length of which exceeds the width of the upper half-ring and the lower half-ring of the body, and the thickness and width are equal to the depth and width of the longitudinal recesses, made from the inside of the lower edges of the upper half ring and the lower half ring of the body.

In the pipeline repair device, the distance from the side surfaces of the upper half ring to the outer surface of the support element on both sides exceeds the outer diameter of the support element.

In the pipeline repair device, the thickness of the plate of the upper half-ring and the lower half-ring of the body exceeds the original thickness of the pipeline being repaired.

Brief description of the drawings

In the following, the invention is explained by specific examples of its implementation with reference to the attached figure (Figure 1), which shows a general view of the device for repairing a pipeline after repair, figure (Figure 2), which shows a front view of a device for repairing a pipeline in the process of repair, figure (Figure 3), which shows the shut-off assembly of the pipeline repair device in section, figure (Figure 4), which shows a variant of the shut-off assembly of the device for pipeline repair in the section, and figure (Figure 5), which shows a general view of the device for repair of the pipeline in the course of repair.

Implementation of the invention

The pipeline repair device 1 (Figure 1) contains a housing made of an upper semi-ring 2, in the central part of which a through round hole is made, and a lower semi-ring 3, which are tightly pressed and attached to the pipeline 4 with a continuous circular weld 5 superimposed on the side surfaces of the upper half-ring and lower half-ring of the body and the outer surface of the pipeline 4, as well as a longitudinal weld 6 applied to the ends of the upper half-ring and the lower half-ring of the body adjacent to each other.

The tightening assembly (Figure 1) includes plates 7 attached from the outside to the ends of the upper half ring 2 and the lower half ring 3 of the body, with centrally located holes 8 through which bolts 9 are passed, equipped with nuts 10 (Figure 2). The tightening assembly contains spacers 11 attached from below to the ends of the plates of the upper half ring and to the outer surface of the upper half ring, as well as spacers attached from above to the ends of the plates of the lower half ring and to the outer surface of the lower half ring

The locking assembly (Figure 3), designed to seal the through hole 12 in the pipeline 4, contains a support element made in the form of a metal straight circular hollow cylinder 13 with an external disc-shaped protrusion 14 in the central part, attached to the outer part of the upper half-ring 2 of the housing and covering the through round hole 15 in the central part of the upper half ring 2 of the body.

The metal cover 16 (Figure 3) is attached to the metal straight circular hollow cylinder 13 of the supporting element from above using a threaded connection 17.

The locking element 18 (Figure 3), which is a metal straight cylinder, placed inside a straight circular hollow cylinder 13 of the support element with the possibility of circular rotation and vertical movement along the longitudinal axis by means of a threaded connection 19, in the upper central part of which a recess with a figured cross section is made 20.

The sealing element 21 (Figure 3), located inside the support element under the locking element 18, is made of a dense resilient elastic material in the form of a disk, the diameter of which is equal to the inner diameter of the metal straight circular hollow cylinder 13 of the support element.

In the pipeline repair device, a lower sealing ring 22 (Figure 3) is additionally installed, made of a dense resilient elastic material, located in an annular recess 23, made outside the lower part of the fixing element 18.

In the pipeline repair device, an upper sealing ring 24 (Figure 3) is additionally installed, made of a dense resilient elastic material, placed in an annular recess 25 made in the lower end part of the metal cover 16.

In the device for repairing the pipeline of the central part of the fixing element 18 (Figure 4), a hole 26 is made into which a metal pin 27 is inserted, on which a sealing element 21 is fitted, provided with a through central hole 28.

In the pipeline repair device, in the lower central part of the fixing element 18 (Figure 4), a circular recess 29 is made, into which a sealing element 21 is inserted, provided in the upper central part with a disc-shaped protrusion 30, the outer diameter and height of which are equal to the inner diameter and height of the circular recess 29 in the lower central part of the fixing element 18.

In the pipeline repair device, the recess with a shaped cross-section 20 (Figure 3) made in the upper central part of the fixing element 18 has the shape of a polyhedron.

In the pipeline repair device, the upper part of the fixing element 18 is attached to the upper part of the straight circular hollow cylinder 13 of the supporting element by means of a continuous circular weld 31 (Figure 4).

In the pipeline repair device (Figure 5), between the outer surface of the pipe of the pipeline being repaired and the inner surfaces of the edges of the closed upper half-ring 2 and lower half-ring 3 of the body, longitudinal metal plates 32 are installed, the length of which exceeds the width of the upper half-ring and the lower half-ring of the body, and the thickness and the width is equal to the depth and width of the longitudinal recesses 33, made on the inside of the lower edges of the upper half ring 2 and the lower half ring 3 of the body.

The method of using the device for repairing a pipeline under pressure includes the following steps.

1) At the free edge of the pipeline 4, close to the leak, the upper semi-ring 2 and the lower semi-ring 3 of the casing of the pipeline repair device 1 are tightened with bolts 9 and nuts 10 of the tightening unit without tension, ensuring the clearance necessary for its movement along the pipeline (Figure 1 and Figure 2).

2) Move the device for repairing pipeline 1 to the place of leakage and align the central axis of the locking unit with the through hole 12 in pipeline 4 (Figure 3).

3) Tighten the bolts 9 with a slight tightness.

4) Tighten the fixing element 18 using a multi-faceted (for example, hexagonal) socket wrench until the leak disappears.

5) Tighten bolts 9 completely.

6) Eliminate the presence of leaked oil or gas in the vicinity with a radius of 2-3 meters from the place of repair.

7) The upper half ring 2 and the lower half ring 3 of the body are welded to the pipeline 4 with a continuous circular weld 5 superimposed on the side surfaces of the upper half ring and the lower half ring of the body and the outer surface of the pipeline (Figure 1).

8) Remove the bolts 9 and nuts 10 of the tightening unit.

9) The upper half ring 2 is welded with the lower half ring 3 of the body with a longitudinal weld 6 applied to the adjacent ends of the upper half ring 2 and the lower half ring 3 of the body (Figure 1) using backing longitudinal metal plates 31 (Figure 5).

10) Weld the upper part of the locking element 18 to the upper part of the straight circular hollow cylinder 13 of the supporting element (Figure 3) using a continuous circular weld 31 (Figure 4).

11) Check the welds by means of ultrasonic or X-ray inspection for the absence of defects.

12) Screw on the metal cover 16 (Figure 3) and complete the repair.

The use of a pipeline repair device ensures effective elimination of leaks in existing oil and gas pipelines with high operating pressure - up to 10 MPa. It allows you to restore the mechanical strength of the repaired section of the pipeline. Moving the fixing element 18 inside the straight circular hollow cylinder 13 of the support element, pressing the sealing element 21 against the through hole 12 in the pipeline 4 and the elimination of the leak can be performed by one person by circular rotation of a conventional socket wrench inserted into a recess with a figured cross section 20 (Figure 3) .

The shape, size and location of the sealing element 21, made of a dense resilient elastic material, make it possible to achieve the necessary deformation so that it exactly matches the concave or convex shape of the pipe at the leak. Thus, a sufficiently high level of sealing of the through hole 12 in the pipeline 4 is achieved, including at the welds. While the linear dimensions of the through hole 12 (and even cracks) can be much larger than the prototype and approach the size of the diameter of the sealing element 21 (Figure 3).

The high quality of the repair is ensured by fastening the upper half ring 2 and the lower half ring 3 to the pipeline 4 with a continuous circular weld 5 superimposed on the side surfaces of the upper half ring and the lower half ring of the body and the outer surface of the pipeline 4, as well as a longitudinal weld applied to the ends adjacent to each other the upper half ring and the lower half ring of the body (Figure 1). The strength of these welds significantly exceeds the detachment effect of the high pressure of the medium in the pipeline.

Improving the reliability of high-pressure pipeline repair is due to the full circular strengthening and reinforcement of the pipe section being repaired by means of its tight coverage by the body of the device for repairing the pipeline, consisting of the upper half ring 2 and the lower half ring 3, (Figure 1) and welding to it with solid welds 5 and 6 .In the pipeline repair device, the thickness of the plate of the upper half-ring and the lower half-ring of the body exceeds the original thickness of the pipe of the pipeline being repaired. Due to this, the mechanical strength of the repaired section of the pipeline is restored. This is equivalent to inserting a new pipe section, which allows subsequent reliable long-term operation of the pipeline.

Additional installation of the lower sealing ring 22 (Figure 3), made of a dense resilient elastic material, located in the annular recess 23, made outside the lower part of the locking element 18, allows you to increase the level of sealing of the locking unit, which is necessary, first of all, for the transported gaseous medium.

Additional installation of the upper sealing ring 24 (Figure 3), made of a dense elastic material, placed in the annular recess 25, made in the lower end part of the metal cover 16, increases the sealing level of the locking unit from the inside. In addition, this protects the locking assembly from the negative effects of the environment from the outside, for example from the ingress of dust and moisture.

Prevention of uneven compression, damage and rupture of the sealing element for different dense elastic elastic materials is achieved by making a hole 26 in the lower central part of the fixing element 18, into which a metal pin 27 is inserted, on which the sealing element 21 is fitted, provided with a through central hole 28 (Figure 4). This allows the sealing element 21 to rotate around the metal pin 27 when the rotating locking element 18 is pressed on it, which leads to uniform compression of the sealing element along the longitudinal axis of the locking assembly and uniform expansion in a plane perpendicular to this axis. In one embodiment, the metal pin of the locking element 27 is made in the form of a screw screwed into a circular hole 26 in the lower central part of the locking element 18, provided with an internal thread. This allows the sealing element 21 to be firmly attached to the bottom of the locking element 18.

To repair a pipeline with through holes and cracks of relatively large sizes, the pipeline repair device implements the possibility of tighter compression of such defects by the sealing element 21 due to the increased pressure of the fixing element 18 on the circular peripheral part of the sealing element (Figure 4). To do this, a circular recess is made in the lower central part of the fixing element, into which a sealing element is inserted, provided in the upper central part with a disk-shaped protrusion, the outer diameter and height of which are equal to the inner diameter and height of the circular recess in the lower central part of the fixing element. In addition, this serves as an additional means of fastening the sealing element 21 to the lower part of the locking element 18.

A recess with a shaped cross-section 20, made in the upper central part of the fixing element 18, designed to move the fixing element with the socket wrench inserted into it until the leak disappears in the pipeline 4, has the shape of a polyhedron (Figure 3). This allows the use of commonly used multi-sided socket wrenches, including a hex socket wrench.

The high strength of the fastening of the plates of the tightening unit from the outside to the ends of the upper and lower half-rings of the body, necessary for tightly pressing the upper half-ring 2 and the lower half-ring 3 of the body to the active pipeline 4 with high pressure (Figure 2), is achieved by additional installation of spacers 11 attached from below to to the ends of the plates of the upper half ring and to the outer surface of the upper half ring, as well as spacers attached from above to the ends of the plates of the lower half ring and to the outer surface of the lower half ring, fastened by welds.

Welding of the upper part of the locking element 18 (Figure 4) to the top of the straight circular hollow cylinder 13 of the supporting element using a solid circular weld 31 prevents spontaneous unscrewing of the locking element 18, weakening the pressure on the sealing element 21 and, as a result, reducing the quality of sealing the through hole 12. Taking into account this weld, the leak is completely sealed with welds applied to the body and the shut-off assembly of the pipeline repair device.

To prevent damage to the surface of the pipeline 4 (Figure 1) in the process of applying a longitudinal weld 6 to adjacent ends of the upper half ring 2 and the lower half ring 3 of the body between the outer surface of the pipe of the repaired pipeline and the inner surfaces of the edges of the closed upper half ring 2 and the lower half ring 3 of the body installed lining longitudinal metal plates 32 (Figure 5). Their length exceeds the width of the upper half-ring and the lower half-ring of the body, and the thickness and width are equal to the depth and width of the longitudinal recesses 33 made on the inside of the lower edges of the upper half-ring and the lower half-ring of the body. In the process of welding, penetration of the edges to be welded with backing longitudinal metal plates is ensured and defects in the beginning and end of welding are excluded: starting pores and sagging.

In order to eliminate the negative destructive effect of high-temperature heating on the sealing element 21 (Figure 3) in the process of applying a continuous circular weld 5 (Figure 1) superimposed on the side surfaces of the upper half ring 2 and the lower half ring 3 of the body and the outer surface of the pipeline 4, the distance from the side surfaces of the upper half ring to the outer surface of the support element on both sides is selected to exceed the outer diameter of the support element. Improving heat removal and facilitating the temperature regime is facilitated by the transported medium moving along the existing pipeline, for example, oil.

The choice of the thickness of the plate of the upper half ring 2 and the lower half ring 3 of the body in excess of the original thickness of the repaired pipeline 4 (Figure 1) allows you to restore the original mechanical strength of the pipe in the repaired area and eliminate repeated leaks caused by the processes of internal corrosion of the metal.

The industrial applicability of the pipeline repair device has been confirmed during factory and field tests. For the repair of a pipeline with an outer diameter of 219 mm, the overall dimensions of the product were 321 × 314 × 140 mm, and its weight was 11 kg. The pressure of the working environment during the tests was 6.0 MPa. The suitability of the product for the repair of existing pipelines with a working medium in the form of oil, natural gas and various oil products has been proven. The permissible temperature of the working medium is in the temperature range from -40 to +110 degrees Celsius. Due to the small weight and size characteristics of the pipeline repair device and the low effort required for its installation, it can be operated by one operator.

The device for repairing the pipeline allows you to simultaneously combine temporary emergency repairs to eliminate the leakage of the existing high-pressure pipeline with its overhaul for subsequent long-term operation of the repaired pipeline section.

Claims (18)

1. A device for repairing an existing pipeline, containing a housing, a tightening assembly, a shut-off assembly, including a support element, a fixing element and a sealing element, characterized in that for the purpose of repairing a high-pressure pipeline, improving the quality and reliability of repairs - the body is made of an upper half ring, in the central part of which a through round hole is made, and a lower half ring, which are tightly pressed and attached to the pipeline by a continuous circular weld superimposed on the side surfaces of the upper half ring and the lower half ring of the body and the outer surface of the pipeline, as well as a longitudinal a welded seam applied to the ends of the upper half ring and the lower half ring of the body adjacent to each other; - tightening assembly includes plates attached from the outside to the ends of the upper and lower half-rings of the housing, with centrally located holes through which bolts equipped with nuts are passed; - locking unit contains a support element made in the form of a metal straight circular hollow cylinder with an external disk-shaped protrusion in the central part, attached to the outer part of the upper half-ring of the body and covering a through round hole in the central part of the upper half-ring of the body; a metal cover attached to the support element from above by means of a threaded connection; a locking element, which is a metal straight cylinder placed inside the support element with the possibility of circular rotation and vertical movement along the longitudinal axis by means of a threaded connection, in the upper central part of which a recess with a figured cross section is made; a sealing element located inside the support element under the fixing element, made of a dense elastic material in the form of a disk, the diameter of which is equal to the internal diameter of the support element. 2. The device according to claim 1, characterized in that it additionally has a lower sealing ring made of a dense elastic material located in an annular recess made outside the lower part of the locking element. 3. The device according to claim 1, characterized in that it additionally has an upper sealing ring made of a dense elastic material, placed in an annular recess made in the lower end part of the metal cover. 4. The device according to claim 1, characterized in that a hole is made in the lower central part of the fixing element, into which a metal pin is inserted, on which a sealing element is fitted, provided with a through central hole. 5. The device according to claim 1, characterized in that in the lower central part of the fixing element there is a circular recess, into which a sealing element is inserted, provided in the upper central part with a disc-shaped protrusion, the outer diameter and height of which are equal to the inner diameter and height of the circular recess in the lower the central part of the fixing element. 6. The device according to claim. 1, characterized in that the recess with a figured cross section, made in the upper central part of the locking element, has the shape of a polyhedron. 7. The device according to claim 1, characterized in that spacers are additionally installed attached from below to the ends of the plates of the upper half ring and to the outer surface of the upper half ring, as well as spacers attached from above to the ends of the plates of the lower half ring and to the outer surface of the lower half ring. 8. The device according to claim. 1, characterized in that the upper part of the locking element is attached to the upper part of the straight circular hollow cylinder of the support element using a continuous circular weld. 9. The device according to claim 1, characterized in that between the outer surface of the pipe of the pipeline being repaired and the inner surfaces of the edges of the closed upper half-ring and the lower half-ring of the body, longitudinal metal plates are installed, the length of which exceeds the width of the upper half-ring and the lower half-ring of the body, and the thickness and width equal to the depth and width of the longitudinal recesses made on the inner side of the lower edges of the upper half-ring and the lower half-ring of the housing. 10. The device according to claim 1, characterized in that the distance from the side surfaces of the upper half ring to the outer surface of the support element on both sides exceeds the outer diameter of the support element. 11. The device according to claim 1, characterized in that the thickness of the plate of the upper half ring and the lower half ring of the body exceeds the original thickness of the pipe of the pipeline being repaired.

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