Pipeline ring repairing structure

Abstract

The utility model discloses a pipeline annular repair structure which comprises a pipeline with an annular butt welding seam and a sleeve which is sleeved on the pipeline and spans the annular butt welding seam. The sleeve comprises a large-diameter section and small-diameter sections in the axial direction, the large-diameter section protrudes out of the outer wall of the pipeline and covers the annular butt welding seam, and the small-diameter sections axially extend out of the two ends of the large-diameter section respectively and are attached to the outer wall of the pipeline; and small-diameter sections at two ends of the sleeve are hermetically welded and fixed with the outer wall of the pipeline. According to the pipeline annular repairing structure, the leakage position of the butt weld of the pipeline does not need to be troweled, and the leakage position of the butt weld of the pipeline can be repaired under the condition that water is not cut off; and the axial tensile deformation bearing capacity of the pipeline can be improved, so that the service life of the pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to a pipeline ring patching structure. Background Art

[0002] The water supply pipelines in the secondary water supply pump room are often made of stainless steel pipes, and the connection between adjacent stainless steel pipes is often made by butt welding, so a circular butt weld will be formed at the butt of the stainless steel pipes. However, as the operation time of the pipeline increases, rust and leakage often occur at the butt weld.

[0003] If you need to replace a rusted and leaking pipe, you will need to stop the water supply before replacing the pipe. After the water supply is restored, the pipe will need to be flushed extensively, which is time-consuming and causes a waste of water resources.

[0004] In order to avoid replacing the pipeline, the patch patch is often used to patch the leaking part of the pipeline butt weld. The specific steps of patch patch patch are as follows: first, smooth the leaking part of the pipeline butt weld so that the leaking part of the butt weld is flush with the outer wall of the pipeline; then cover the leaking part of the butt weld with an arc patch and make the arc patch close to the outer wall of the pipeline, and then seal and weld the edge of the arc patch to the outer wall of the pipeline.

[0005] Although patch repair can complete the repair of pipeline butt welds without replacing the pipeline, patch repair still has the following defects:

[0006] 1) Before patch repair, the leaking part of the pipe butt weld needs to be smoothed to avoid the arc patch not being able to fit tightly against the outer wall of the pipe due to the butt weld protruding from the outer wall of the pipe; however, there is a risk of water spraying when smoothing the leaking part of the pipe butt weld, so water supply still needs to be stopped during smoothing;

[0007] 2) The arc patch used for patch repair can only partially cover the butt weld, and the area of ​​the butt weld not covered by the arc patch is still prone to rust and leakage. Therefore, a single patch repair often only treats the symptoms and not the root cause. Rust and leakage often occur repeatedly at the butt weld of the pipeline, requiring multiple patch repairs, which in turn requires multiple water outages.

[0008] Therefore, it is necessary to design a pipeline ring patching structure so that the leakage of the pipeline butt weld can be repaired without stopping the water supply. Summary of the invention

[0009] In order to solve the defects of the prior art, the utility model provides a pipeline ring patch structure, comprising: a pipeline with an annular butt weld, and a sleeve sleeved on the pipeline and spanning the annular butt weld; the sleeve comprises along its axial direction: a large-diameter section protruding from the outer wall of the pipeline and covering the annular butt weld, and small-diameter sections axially extending outward from both ends of the large-diameter section and abutting against the outer wall of the pipeline; the small-diameter sections at both ends of the sleeve (large-diameter section) are sealed and welded to the outer wall of the pipeline.

[0010] Preferably, the small diameter sections at both ends of the sleeve (large diameter section) are fixed to the outer wall of the pipeline by lap welding to form a sealing weld.

[0011] Preferably, the sleeve is composed of two half cylinders spliced ​​together, and the two half cylinders are sealed and welded at the splicing point.

[0012] Preferably, the semi-cylinder body includes along its axial direction: a large-diameter semi-annular portion for splicing to form a large-diameter section of the sleeve, and a small-diameter semi-annular portion axially extending outward from both ends of the large-diameter semi-annular portion and used to splice to form a small-diameter section of the sleeve.

[0013] Preferably, the axial cross-section of the large diameter semi-ring portion of the semi-cylinder is an arc shape (the axial cross-section is coplanar with the axis of the semi-cylinder), and the radial cross-section of the large diameter semi-ring portion of the semi-cylinder is a semicircle (the radial cross-section is perpendicular to the axis of the semi-cylinder).

[0014] Preferably, the axial cross-section of the small diameter semi-annular portion of the semi-cylinder is a straight bar (the axial cross-section is coplanar with the axis of the semi-cylinder), and the radial cross-section of the small diameter semi-annular portion of the semi-cylinder is a semicircular (the radial cross-section is perpendicular to the axis of the semi-cylinder).

[0015] Preferably, the small diameter sections at both ends of the sleeve (large diameter section) are symmetrically arranged; and the small diameter semi-ring portions at both ends of the semi-cylinder (large diameter semi-ring portion) are symmetrically arranged.

[0016] Preferably, the inner diameter of the small diameter section of the sleeve and the small diameter semi-annular portion of the semi-cylinder is equal to the outer diameter of the pipeline.

[0017] Preferably, the axial length of the sleeve and the semi-cylinder is 6 to 7 cm; the axial length of the large-diameter section of the sleeve and the large-diameter semi-ring portion of the semi-cylinder is 2.5 cm.

[0018] Preferably, the wall thickness of the sleeve (large diameter section and small diameter section) and the semi-cylinder (large diameter semi-annular portion and small diameter semi-annular portion) is 1.5-2 mm.

[0019] The advantages and beneficial effects of the utility model are: providing a pipeline ring patching structure, which does not require smoothing treatment on the leakage of the pipeline butt weld, and can complete the leak repair treatment on the pipeline butt weld without stopping the water; it can also improve the ability of the pipeline to withstand axial tensile deformation, thereby increasing the service life of the pipeline.

[0020] The utility model has the following characteristics:

[0021] The pipeline ring patching structure of the present invention can place the annular butt weld of the pipeline in the inner cavity of the large diameter section of the sleeve. Even if the butt weld protrudes from the outer wall of the pipeline, the small diameter sections at both ends of the sleeve (large diameter section) can be close to the outer wall of the pipeline. Therefore, the implementation of the pipeline ring patching structure of the present invention does not require smoothing treatment of the leakage of the pipeline butt weld, which can avoid the hidden danger of water spraying caused by smoothing treatment of the leakage of the pipeline butt weld, and thus the leakage of the pipeline butt weld can be repaired without stopping the water.

[0022] The pipeline ring patching structure of the utility model adopts a sleeve to completely wrap the annular butt weld of the pipeline, and the wrapping degree of the pipeline is large, which can form long-term and stable protection for the butt weld of the pipeline; after the leak repairing treatment is completed, the annular butt weld can be prevented from rusting and leaking again for a long time.

[0023] The utility model provides a pipeline ring patch structure in which the small diameter sections at both ends of the sleeve (large diameter section) are sealed and welded to the outer wall of the pipeline by lap welding. The lap welding structure can improve the ability of the pipeline to withstand axial tensile deformation, thereby increasing the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the pipeline;

[0025] Figure 2 It is a front view schematic diagram of the pipeline ring supplement structure;

[0026] Figure 3 yes Figure 2 A partial cross-sectional schematic diagram of

[0027] Figure 4 It is a schematic diagram of the front view of the half cylinder;

[0028] Figure 5 It is a side view schematic diagram of the semi-cylinder. DETAILED DESCRIPTION

[0029] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0030] The specific technical solutions implemented in this utility model are as follows:

[0031] like Figures 1 to 5As shown, a pipeline ring patch structure comprises: a pipeline 1 having an annular butt weld 11, and a sleeve 2 sleeved on the pipeline 1 and spanning the annular butt weld 11; the sleeve 2 comprises, along its axial direction, a large-diameter section 21 protruding from the outer wall of the pipeline 1 and covering the annular butt weld 11, and small-diameter sections 22 axially extending outward from both ends of the large-diameter section 21 and abutting against the outer wall of the pipeline 1;

[0032] The sleeve 2 is composed of two stainless steel semi-cylinders 3 spliced ​​together; the semi-cylinder 3 includes along its axial direction: a large-diameter semi-ring portion 31 for splicing to form the large-diameter section 21 of the sleeve 2, and a small-diameter semi-ring portion 32 axially extending from both ends of the large-diameter semi-ring portion 31 and used to splice to form the small-diameter section 22 of the sleeve 2; the axial cross-section shape of the large-diameter semi-ring portion 31 of the semi-cylinder 3 is an arc (the axial cross-section is coplanar with the axis of the semi-cylinder 3), and the radial cross-section shape of the large-diameter semi-ring portion 31 of the semi-cylinder 3 is a semicircular (the radial cross-section is perpendicular to the axis of the semi-cylinder 3); the axial cross-section shape of the small-diameter semi-ring portion 32 of the semi-cylinder 3 is a straight bar (the axial cross-section is coplanar with the axis of the semi-cylinder 3 The axes are coplanar), and the radial cross-section shape of the small-diameter semi-annular portion 32 of the semi-cylinder 3 is semicircular (the radial cross-section is perpendicular to the axis of the semi-cylinder 3); the small-diameter semi-annular portions 32 at both ends of the semi-cylinder 3 (large-diameter semi-annular portion 31) are symmetrically arranged; the large-diameter semi-annular portions 31 of the two semi-cylinders 3 are spliced ​​to form the large-diameter section 21 of the sleeve 2, and the small-diameter semi-annular portions 32 of the two semi-cylinders 3 are spliced ​​to form the small-diameter section 22 of the sleeve 2, and the small-diameter sections 22 at both ends of the sleeve 2 (large-diameter section 21) are symmetrically arranged; the small-diameter sections 22 at both ends of the sleeve 2 (large-diameter section 21) are sealed and welded to the outer wall of the pipe 1 by lap welding, and the two semi-cylinders 3 are sealed and welded at the splicing;

[0033] More specific:

[0034] The inner diameters of the small-diameter semi-ring portion 32 of the semi-cylinder 3 and the small-diameter section 22 of the sleeve 2 are equal to the outer diameter of the pipeline 1;

[0035] The axial length of the semi-cylindrical body 3 and the sleeve 2 is 6 to 7 cm; the axial length of the large-diameter semi-ring portion 31 of the semi-cylindrical body 3 and the large-diameter section 21 of the sleeve 2 is 2.5 cm;

[0036] The wall thickness of the semi-cylinder 3 (large diameter semi-annular portion 31 and small diameter semi-annular portion 32) and the sleeve 2 (large diameter section 21 and small diameter section 22) is 1.5-2 mm.

[0037] The implementation steps of the pipeline ring patching structure of the utility model include:

[0038] When the annular butt weld 11 of the pipeline 1 is corroded and leaking, the two half-cylinders 3 are spliced ​​together to form a sleeve 2 that is sleeved on the butt weld 11 of the pipeline 1; specifically, the large-diameter semi-annular portions 31 of the two half-cylinders 3 are spliced ​​together to form a large-diameter section 21 of the sleeve 2, and the large-diameter section 21 of the sleeve 2 covers the annular butt weld 11 of the pipeline 1 (that is, the annular butt weld 11 of the pipeline 1 is placed in the inner cavity of the large-diameter section 21 of the sleeve 2); and the small-diameter semi-annular portions 32 of the two half-cylinders 3 are spliced ​​together to form a small-diameter section 22 of the sleeve 2, and the small-diameter section 22 of the sleeve 2 is close to the outer wall of the pipeline 1;

[0039] Then, the small diameter sections 22 at both ends of the sleeve 2 (large diameter section 21) are sealed and welded to the outer wall of the pipeline 1 by lap welding, and the two half cylinders 3 are sealed and welded at the joint, thereby finally enclosing the annular butt weld 11 of the pipeline 1 in a sealed space.

[0040] The pipeline ring patching structure of the present invention can place the annular butt weld 11 of the pipeline 1 in the inner cavity of the large diameter section 21 of the sleeve 2. Even if the butt weld 11 protrudes from the outer wall of the pipeline 1, the small diameter sections 22 at both ends of the sleeve 2 (large diameter section 21) can also be close to the outer wall of the pipeline 1. Therefore, the implementation of the pipeline ring patching structure of the present invention does not require smoothing treatment of the leaking part of the butt weld 11 of the pipeline 1, which can avoid the hidden danger of water spraying caused by smoothing treatment of the leaking part of the butt weld 11 of the pipeline 1, and further, the leak repair treatment of the butt weld 11 of the pipeline 1 can be completed without stopping the water.

[0041] The pipeline ring patching structure of the utility model adopts a sleeve 2 to completely wrap the annular butt weld 11 of the pipeline 1, and the wrapping degree of the pipeline 1 is large, which can form long-term and stable protection for the butt weld 11 of the pipeline 1; after the leak repairing treatment is completed, the annular butt weld 11 can be prevented from rusting and leaking for a long time.

[0042] The pipeline ring patch structure of the utility model has small diameter sections 22 at both ends of the sleeve 2 (large diameter section 21) and the outer wall of the pipeline 1 formed by lap welding to form a sealing weld. The lap welding structure can improve the ability of the pipeline 1 to withstand axial tensile deformation, thereby increasing the service life of the pipeline 1.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline ring patch structure, characterized in that: include: A pipe having a circular butt weld, and a sleeve sleeved on the pipe and spanning the circular butt weld; The sleeve includes, along its axial direction: a large diameter section protruding from the outer wall of the pipeline and covering the annular butt weld, and small diameter sections extending axially outward from both ends of the large diameter section and abutting against the outer wall of the pipeline; the small diameter sections at both ends of the sleeve are sealed and welded to the outer wall of the pipeline.

2. The pipeline ring patch structure according to claim 1 is characterized in that: The small diameter sections at both ends of the sleeve are fixed to the outer wall of the pipeline by lap welding to form a sealing weld.

3. The pipeline ring patch structure according to claim 2 is characterized in that: The sleeve is composed of two semi-cylinders spliced ​​together, and the two semi-cylinders are sealed and welded and fixed at the splicing position.

4. The pipeline ring patch structure according to claim 3 is characterized in that: The semi-cylinder body includes along its axial direction: a large-diameter semi-annular portion for splicing to form a large-diameter section of the sleeve, and a small-diameter semi-annular portion axially extending from both ends of the large-diameter semi-annular portion and used to splice to form a small-diameter section of the sleeve.

5. The pipeline ring patch structure according to claim 4 is characterized in that: The axial cross-section shape of the large-diameter semi-annular portion of the semi-cylinder is an arc shape, and the radial cross-section shape of the large-diameter semi-annular portion of the semi-cylinder is a semicircle.

6. The pipeline ring patch structure according to claim 4, characterized in that: The axial cross-sectional shape of the small-diameter semi-annular portion of the semi-cylinder is a straight bar, and the radial cross-sectional shape of the small-diameter semi-annular portion of the semi-cylinder is a semicircle.

7. The pipeline ring patch structure according to claim 4, characterized in that: The small diameter sections at both ends of the sleeve are symmetrically arranged; the small diameter semi-ring parts at both ends of the semi-cylinder are symmetrically arranged.

8. The pipeline ring patch structure according to claim 4, characterized in that: The inner diameters of the small-diameter section of the sleeve and the small-diameter semi-annular portion of the semi-cylinder are equal to the outer diameter of the pipeline.

9. The pipeline ring patch structure according to claim 4, characterized in that: The axial length of the sleeve and the semi-cylinder is 6 to 7 cm; the axial length of the large-diameter section of the sleeve and the large-diameter semi-ring portion of the semi-cylinder is 2.5 cm.

10. The pipeline ring patch structure according to claim 4, characterized in that: The wall thickness of the sleeve and the semi-cylinder is 1.5-2 mm.

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