CN214889723U

CN214889723U - Long distance pipeline restores sleeve

Info

Publication number: CN214889723U
Application number: CN202121181733.1U
Authority: CN
Inventors: 聂肖虎; 孙伟; 黄炼; 刘洪勇; 丁晚平; 陈幼玲; 牛宁宁
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2020-09-21
Filing date: 2021-05-28
Publication date: 2021-11-26
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a long distance pipeline restores sleeve. The repair sleeve is a tubular structure which is formed by sleeving a first half sleeve and a second half sleeve outside the pipeline to be repaired and has small diameters at two ends and a convex middle part, welding surfaces inclined towards the circle center are respectively arranged at two ends of the first half sleeve and the second half sleeve, and the two ends of the first half sleeve and the second half sleeve are respectively welded with the outer wall of the pipeline to be repaired into a whole through the welding surfaces after the first half sleeve and the second half sleeve are sleeved outside the pipeline to be repaired. The utility model discloses simple structure, simple to operate not only can restore the pipeline defect of various differences such as metal loss, crackle, deformation, welding seam defect, can also restore special defects such as serious deformation of pipeline, bending, fold.

Description

Long distance pipeline restores sleeve

Technical Field

The utility model belongs to the pipeline restoration field especially relates to a long distance pipeline restores sleeve.

Background

The long-distance pipeline as one of five modern transportation modes (railway, road, aviation, water transportation and pipeline) has incomparable advantages of other four traditional transportation modes in the aspects of safety, convenience, economy and the like, and is mainly used for transporting water, natural gas, oil or other similar fluids.

At present, the total mileage of domestic oil and gas long-distance transmission pipe networks is about 15 kilometers, about 99 percent of natural gas, 70 percent of crude oil and finished oil are transported through pipelines, and the oil and gas long-distance transmission pipelines have the title of 'energy artery'. With the increase of the operation time of the pipeline, due to the service environment, geological conditions, stray current, failure of an anticorrosive coating, damage of a third party and the like, various defects such as metal loss, cracks, deformation, weld defects and the like gradually occur in the pipeline, and the pipeline must be maintained and repaired in time. At present, the common pipeline defect repairing methods in China comprise repair welding, plate repairing, A-type sleeves, B-type sleeves, epoxy steel sleeves and the like. If special defects such as serious deformation, bending, folding and the like occur in the pipeline, the pipeline cannot be repaired by conventional repair. In this case, the plugging and pipe replacement operation is usually performed. However, the construction period of the plugging and pipe replacing operation is long, the operation cost is high, the direct operation risk is high, and the process requirement is complex.

Disclosure of Invention

The utility model discloses problem to prior art exists provides a long distance pipeline repair sleeve, and this sleeve can weld outside at oil pipe defective position, forms permanent restoration, solves the unsuitable pipeline defect repair problem of conventional repair method.

In order to achieve the above object, the utility model provides a long-distance pipeline repair sleeve, repair sleeve is established the tubular structure of evagination in the middle of the both ends diameter that forms through the welding after waiting to restore the pipeline outside by first half sleeve and second half sleeve cover, is equipped with the face of weld of court centre of a circle slope respectively at first half sleeve and second half sleeve both ends to after waiting to restore the pipeline outside at first half sleeve and second half sleeve cover, its both ends are as an organic whole through the face of weld and the outer wall welding of waiting to restore the pipeline respectively.

The utility model discloses better technical scheme: the first half sleeve and the second half sleeve are two half sleeves with the same shape and size, the butt joint surfaces of the first half sleeve and the second half sleeve are inclined surfaces which are matched with each other, when the first half sleeve and the second half sleeve are sleeved outside the pipeline to be repaired, the inclined surfaces of the two half sleeves are butted and connected into a whole through welding, and the defect part of the pipeline to be repaired is completely coated.

The utility model discloses further technical scheme: the first half sleeve and the second half sleeve are two half cylinder structures which are formed by bisecting cylindrical structures which are manufactured according to a 3D model formed by collecting defect data of a pipeline to be repaired by a 3D laser scanner, have sizes matched with the pipeline to be repaired, and have small diameters at two ends and convex centers.

The utility model discloses better technical scheme: the length of the small-diameter area at the two ends of the repair sleeve is 5-20 cm.

The utility model discloses better technical scheme: the middle protruding part of the repair sleeve is a regular arc-shaped protrusion or an irregular concave-convex structure, one or two or more protruding parts are arranged on the middle protruding part, the two or more protruding parts are connected into a whole through an arc line or a streamline, and the minimum diameter of the protruding part is larger than the diameter of the small-diameter areas at the two ends.

The utility model provides a to the pipeline defect that conventional repair method is inapplicable, a repair sleeve that provides, this sleeve gathers the defect data through 3D laser scanner and forms the 3D model, makes the sleeve structure of the evagination in the middle of the little diameter in proper size both ends through the model, and forms two half-sleeves with it halving, when restoreing, overlaps the defective site of waiting to restore the pipeline with two half-sleeves, and is as an organic whole with waiting to restore the pipeline through the welded mode, forms permanent restoration; the repair sleeve is simple in structure and convenient to install, not only can repair various pipeline defects such as metal loss, cracks, deformation and weld defects, but also can repair special defects such as serious deformation, bending and wrinkles of a pipeline.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a longitudinal sectional view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of two half-sleeves of the present invention;

fig. 5 is a schematic view of the usage state of the present invention.

In the figure: 1-first half sleeve, 100-small diameter area, 101-convex part 2-second half sleeve, 3-pipeline to be repaired, 4-welding surface, 5-butt joint surface.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 is a drawing of an embodiment, which is drawn in a simplified manner and is only used for the purpose of clearly and concisely illustrating an embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The embodiment provides a long-distance pipeline repairing sleeve, as shown in fig. 1, fig. 2 and fig. 5, the repairing sleeve is a cylindrical structure which is formed by sleeving a first half sleeve 1 and a second half sleeve 2 outside a pipeline 3 to be repaired and is small in diameter at two ends and convex in the middle, the length of a small-diameter area 100 at two ends of the sleeve is 5-20 cm, the inner diameter of the small-diameter area is matched with the diameter of an area without a defect of the pipeline 3 to be repaired, the diameter of a middle protruding part 100 is set according to special defects such as deformation, bending and wrinkling of the defect part of the pipeline 3 to be repaired and matched with the small-diameter area, so that the two half sleeves can be just sleeved outside the pipeline 3 to be repaired, and the defect part of the two half sleeves is completely covered. The two ends of the first half sleeve 1 and the second half sleeve 2 are respectively provided with a welding surface 4 inclined towards the circle center, and after the first half sleeve 1 and the second half sleeve 2 are sleeved outside the pipeline 3 to be repaired, the two ends of the first half sleeve 1 and the second half sleeve 2 are respectively welded with the outer wall of the pipeline 3 to be repaired into a whole through the welding surfaces 4.

Treat the pipeline deformation defect that restoreed pipeline 3 its treat that the restoration region appears in the embodiment, as shown in fig. 5, the deformation appears in the outside protrusion of its pipeline, in order to solve this department deformation defect, adopt the utility model provides a sleeve restores, at first will wait to restore the 3D model of pipeline 3's defect data formation according to 3D laser scanner collection and wait to restore pipeline 3 size phase-match, and the little middle evagination tubular structure of both ends diameter, then as fig. 4, with its two half tubular structures that form after the beveling, its butt joint face 5 is the inclined plane of mutual matching, establish when waiting to restore pipeline 3 outside at first half sleeve 1 and second half sleeve 2 cover, the inclined plane butt joint of two half sleeves, and be a whole through welding connection, and will restore telescopic both ends and wait to restore pipeline 3 welding as an organic whole, form permanent restoration. The bulge 101 of the repair sleeve in the embodiment has only one bulge, which is similar to an arc, and the minimum diameter of the bulge 101 is larger than the diameter of the small-diameter areas 100 at the two ends.

To sum up, for the utility model discloses an embodiment of listing, nevertheless the utility model discloses not only be limited to above-mentioned embodiment, as long as reach with any same or similar means the technical effect of the utility model, all should belong to the scope of the protection of the utility model.

Claims

1. The utility model provides a long distance pipeline restores sleeve which characterized in that: the repair sleeve is a tubular structure which is formed by sleeving a first half sleeve (1) and a second half sleeve (2) on the outside of the pipeline to be repaired and protrudes outwards in the middle of the two small end diameters formed by welding, welding surfaces (4) inclined towards the circle center are arranged at the two ends of the first half sleeve (1) and the second half sleeve (2) respectively, and the two ends of the first half sleeve (1) and the second half sleeve (2) are welded into a whole with the outer wall of the pipeline to be repaired (3) through the welding surfaces (4) respectively after the first half sleeve (1) and the second half sleeve (2) are sleeved on the outside of the pipeline to be repaired.

2. The long distance pipeline rehabilitation sleeve as claimed in claim 1, wherein: the first half sleeve (1) and the second half sleeve (2) are two half sleeves with the same shape and size, the butt joint surfaces (5) of the first half sleeve and the second half sleeve are inclined surfaces which are matched with each other, when the first half sleeve (1) and the second half sleeve (2) are sleeved outside the pipeline (3) to be repaired, the inclined surfaces of the two half sleeves are butted and connected into a whole through welding, and the defect part of the pipeline (3) to be repaired is completely coated.

3. The long distance pipeline rehabilitation sleeve as claimed in claim 1, wherein: the first half sleeve (1) and the second half sleeve (2) are two half cylinder structures which are formed by bisecting a cylindrical structure which is manufactured according to a 3D model formed by collecting defect data of a pipeline (3) to be repaired by a 3D laser scanner, has a size matched with that of the pipeline (3) to be repaired, has a small diameter at two ends and is convex outwards in the middle.

4. The long distance pipeline rehabilitation sleeve as claimed in claim 1, wherein: the length of the small-diameter area (100) at the two ends of the repair sleeve is 5-20 cm.

5. The long distance pipeline rehabilitation sleeve as claimed in claim 1, wherein: the middle protruding part (101) of the repair sleeve is a regular arc-shaped protrusion or an irregular concave-convex structure, one or two or more protruding parts are arranged, the two or more protruding parts are connected into a whole through an arc line or a streamline, and the minimum diameter of the protruding part (101) is larger than the diameter of the small-diameter areas (100) at the two ends.