CN210344707U - Pipeline defect reinforcement prosthetic devices - Google Patents
Pipeline defect reinforcement prosthetic devices Download PDFInfo
- Publication number
- CN210344707U CN210344707U CN201921285041.4U CN201921285041U CN210344707U CN 210344707 U CN210344707 U CN 210344707U CN 201921285041 U CN201921285041 U CN 201921285041U CN 210344707 U CN210344707 U CN 210344707U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pipeline
- cylinder
- sealing
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model provides a pipeline defect reinforcement prosthetic devices, pipeline defect reinforcement prosthetic devices includes: the sealing device comprises a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are combined to form a cylinder and form a combined line in the axial direction, sealing parts are arranged at two ends of the first sleeve and the second sleeve respectively, the sealing parts are positioned on the inner side surfaces of the first sleeve and the second sleeve, and the sealing parts at the same end of the cylinder are combined with each other to form a sealing ring; the surface of the cylinder covering the defect part of the pipeline surrounds the pipeline, and an insulating sealing sleeve is arranged between the sealing ring and the pipeline; and a sealing cavity formed by the surface of the pipeline and the cylinder is filled with filler. The utility model provides a drum can not form the corrosion circuit with the pipeline, can protect pipeline, first sleeve and second sleeve, still can play sealed leak-stopping effect to the transmission liquid in the pipeline after the defect further enlarges to leaking simultaneously.
Description
Technical Field
The utility model relates to a pipeline repair technical field, in particular to pipeline defect reinforcement prosthetic devices.
Background
After the oil and gas conveying pipeline runs for a long time, the defects that metal loss, interlayers, cracks, circumferential weld abnormity, sinking and the like affect the conveying safety of the oil and gas pipeline may occur. However, because the steel sleeve and the pipeline are made of different metals, galvanic corrosion is easily formed between the steel sleeve and the pipeline after the steel sleeve and the pipeline enter the underground, so that the repairing device is easy to damage and short in service life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pipeline defect reinforcement prosthetic devices aims at solving sleeve and the easy galvanic corrosion that forms of pipeline, leads to prosthetic devices to damage easily, the not long problem of life-span.
In order to achieve the above object, the utility model provides a pipeline defect reinforcement prosthetic devices, pipeline defect reinforcement prosthetic devices includes: the sealing device comprises a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are combined to form a cylinder and form a combined line in the axial direction, sealing parts are arranged at two ends of the first sleeve and the second sleeve respectively, the sealing parts are positioned on the inner side surfaces of the first sleeve and the second sleeve, and the sealing parts at the same end of the cylinder are combined with each other to form a sealing ring; the surface of the cylinder covering the defect part of the pipeline surrounds the pipeline, and an insulating sealing sleeve is arranged between the sealing ring and the pipeline; and a sealing cavity formed by the surface of the pipeline and the cylinder is filled with filler.
Optionally, the filler is a thermosetting filler, and the sealing cavity is filled with the thermosetting filler.
Optionally, the cylinder is provided with a feed inlet, a discharge outlet and a pipe connecting port.
Optionally, the recessed portion of the surface of the pipeline is filled with putty powder so as to make the surface of the pipeline smooth.
Optionally, the roughness of the surface of the pipe is greater than or equal to 30 μm.
Optionally, the surface of the pipe is painted with a layer of resin-based primer.
Optionally, the end face of the first sleeve, which is joined to the second sleeve, is an inclined face, and the inclined face of the first sleeve and the inclined face of the second sleeve form a welding groove.
Optionally, the insulating sealing sleeve is rigid polyurethane.
Optionally, the distance between the sealing element and the end of the cylinder is 3 mm-5 mm, the ring height of the sealing element is 5 mm-10 mm, and the ring thickness of the sealing element is 2 mm-5 mm.
Optionally, the area of the pipe not covered by the cylinder is provided with a viscoelastic body and/or a polypropylene cold-wound strip.
The utility model discloses technical scheme covers first sleeve and second sleeve on the pipeline, and first sleeve and second sleeve interengage and form the drum, and the drum covers and surrounds the pipeline formation on the surface at pipeline defect position, and wherein, first sleeve and second sleeve all are provided with the sealing member at both ends, and the sealing member is located first sleeve and second telescopic medial surface, the sealing member interengagement with the one end on the drum form sealed ring, sealed ring with be provided with the insulating sealing cover between the pipeline to on the surface of pipeline with the packing is filled to the sealed intracavity that the drum formed. The insulating sealing sleeve is made of a material with good insulating property, so that the cylinder and the pipeline cannot form a corrosion circuit, the pipeline, the first sleeve and the second sleeve can be protected, and meanwhile, when the defect is further enlarged to leak, the sealing and leakage stopping effects can be achieved on transmission liquid in the pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the device for reinforcing and repairing a defect of a pipeline according to the present invention;
fig. 2 is a schematic structural view of the pipeline defect reinforcing and repairing device of the present invention under another vision;
FIG. 3 is a schematic structural view of a cylinder in the device for repairing a defect in a pipeline according to the present invention;
fig. 4 is a schematic structural diagram of a cylinder in the pipeline defect reinforcing and repairing device according to another embodiment of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a pipeline defect reinforcement prosthetic devices, pipeline defect reinforcement prosthetic devices has included its pipeline that surrounds, pipeline defect reinforcement prosthetic devices includes: the first sleeve 21 and the second sleeve 22 are jointed to form a cylinder 20 and a joint line is formed in the axial direction, the first sleeve 21 and the second sleeve 22 are provided with sealing pieces 213 at two ends, and the sealing pieces 213 are located on the inner side surfaces of the first sleeve 21 and the second sleeve 22, wherein the sealing pieces 213 at the same end of the cylinder 20 are jointed to form a sealing ring 23; the surface of the cylinder 20 covering the defective part 11 of the pipeline 10 surrounds the pipeline 10, and an insulating sealing sleeve 30 is arranged between the sealing ring 23 and the pipeline 10; the sealed cavity 40 formed by the surface of the pipeline 10 and the cylinder 20 is filled with filler.
In the present embodiment, the first sleeve 21 and the second sleeve 22 cover the surface of the defective portion 11 of the pipeline 10, and the first sleeve 21 and the second sleeve 22 are connected to form a cylinder 20 to surround the pipeline 10, and a joint line (not shown) formed at the joint may be a straight line or a curved line, as long as the first sleeve 21 and the second sleeve 22 can form a closed cylinder 20, and the joint line extends toward the axial direction of the pipeline 10 or the cylinder 20.
The first sleeve 21 and the second sleeve 22 are both provided with a sealing member 213 on the inner side surface, and after the first sleeve 21 and the second sleeve 22 are joined, the sealing members 213 are butted with each other at two ends of the cylinder 20 to form a sealing ring 23, so as to ensure that the sealing cavity 40 can form a cavity with a certain vacuum degree and no material leakage occurs when filling the filler. A layer of insulating sealing sleeve 30 is arranged between the sealing ring 23 and the pipeline 10 at intervals to prevent the cylinder 20 from contacting the pipeline 10, and the insulating sealing sleeve 30 is made of a material with good insulating property, so that the cylinder 20 and the pipeline cannot form a corrosion circuit, the pipeline 10, the first sleeve 21 and the second sleeve 22 can be protected, and meanwhile, when the defects are further enlarged to be leaked, the sealing and leakage-stopping effects can be achieved on transmission liquid in the pipeline 10.
The filler material can transfer the stress of the defective portion of the pipe 10 to the cylinder 10, preventing the defect from further spreading.
In the preferred embodiment, the first sleeve 21 and the second sleeve 22 are semi-cylinders 20, and the joint is welded into a cylinder 20 which surrounds the pipeline 10, and as the pipeline 10 does not directly participate in welding, the pressure reduction treatment on the pipeline 10 is not needed, so that the normal transportation of the pipeline 10 is not affected, the pipeline 10 has no risk of welding through or new cracks in welding, and the requirement on the quality of welding is reduced; the pipeline 10 may be an oil and gas pipeline 10 for transporting natural gas or oil, and the defect 11 of the pipeline 10 is located in the middle of the cylinder 20. The first sleeve 21 and the second sleeve 22 may be steel sleeves, and the sealing ring 23 is a steel ring.
As an embodiment, the filler (not labeled in the figures) is a thermosetting filler, and the thermosetting filler fills the sealed cavity 40.
The liquid thermosetting filler is filled in the sealing cavity 40, and is bonded with the inner side surfaces of the first sleeve 21 and the second sleeve 22 after being solidified, and the stress generated by the impact of the transmitted substances in the pipe on the defect part 11 is transmitted to the cylinder 20 through the solidified filler, so that the purpose of protecting the pipeline 10 is achieved.
In order to ensure that the filler can transmit the stress to the cylinder 20 to the maximum extent, an expansion monomer is added into the filler to prevent the volume shrinkage of the thermosetting filler after solidification, and a gap between the filler and the cylinder 20 is avoided. In the embodiment, the expansion monomer is added into the thermosetting material in a weight ratio of 5-15% and uniformly stirred to form a first preparation, and the larger the addition ratio of the expansion monomer is, the more obvious the volume expansion of the thermosetting material after solidification is; in order to ensure that the thermosetting material is smoothly solidified, a second preparation consisting of a curing agent and a cationic initiator is required to be added into the first preparation, and the cationic initiator is added into the curing agent in a weight ratio of 3-6% and is uniformly stirred; the first preparation and the second preparation are mixed and heated to generate an expansion copolymerization reaction to form a liquid filling agent with expansion characteristics. The liquid filler expands in volume after solidification, and the volume after expansion is equal to the volume of the liquid filler, or is larger than the volume of the liquid filler, or has a certain degree of shrinkage but is larger than the volume cured without the addition of the expansion monomer, such as shrinkage of 1%.
The liquid filler having expansion characteristics is solidified in the seal cavity 40 and then brought into contact with the cylinder 20 and the pipe 10, thereby sufficiently transmitting the stress at the defective portion of the pipe 10 to the cylinder 20.
Further, the mixing ratio of the first preparation to the second preparation is 3: 0.5-1: 1.5.
In order to ensure that the filler can be smoothly cured and can fill the sealed cavity 40 after being expanded, the mixing ratio of the first preparation to the second preparation is 3: 0.5-1: 1.5, and any value within the ratio range can achieve the purpose, such as 3:1 or 1:1, which is not exemplified herein.
Specifically, the temperature of the first preparation and the second preparation for the expansion copolymerization reaction is 100-150 ℃.
Only when the temperature reaches a certain value, the cationic initiator can decompose to generate a sufficient amount of free radicals to initiate the polymerization reaction of the expandable monomer and the thermosetting material, and the reaction speed is accelerated along with the increase of the temperature, the coagulation rate is increased, the conversion rate is improved, but when the temperature is too high, the reaction is not easy to control, so that the temperature of the expansion copolymerization reaction is 100-150 ℃ in the embodiment, so as to ensure the stable and controllable reaction of the preparation.
Optionally, the first preparation and the second preparation are subjected to vacuum degassing and defoaming treatment during the expansion copolymerization reaction.
The tightness of the packing is critical to the sufficient transmission of the stress of the defect portion 11 to the cylinder 20, and the denser the packing is, the better the performance of transmitting the stress is. Therefore, vacuum degassing and defoaming treatment are performed during the expansion copolymerization reaction of the first preparation and the second preparation to prevent bubbles from affecting the compactness of the filler.
As an example, the thermosetting material is an epoxy resin.
Under the action of cationic initiator, epoxy resin and expanding monomer produce expanding polymerization reaction to form the stuffing with expanding performance. It is understood that epoxy resin is not the only thermosetting material capable of undergoing an expansion polymerization reaction with an expansion monomer, such as polyurethane or phenolic resin, but is not exemplified herein.
The cylinder 20 is provided with a feed inlet 221, a discharge outlet 212 and a connecting pipe 211.
The inlet 221 is used for filling filler, and the outlet 212 is used for discharging excess filler when the filler is solidified and expanded. The aperture sizes of the inlet 221 and the outlet 212 may be designed according to the amount of the filling equipment or the filler, and are determined according to the requirement. In the preferred embodiment, the inlet port 221 and the outlet port 212 are not located in the first sleeve 21 or the second sleeve 22 at the same time.
Optionally, the recessed portion of the surface of the pipeline 10 is filled with putty powder to make the surface of the pipeline 10 smooth.
The sunken part of pipeline 10 surface is filled with putty powder to make pipeline 10 surface level, guarantees that the stress of defective portion 11 fully transmits drum 20.
Further, the roughness of the surface of the pipe 10 is greater than or equal to 30 μm.
The roughness helps to improve the friction between the pipe 10 and the insulating sealing sleeve 30, reduces the shear strength between the surface of the pipe 10 and the insulating sealing sleeve 30, further ensures the reliability of application transfer, and increases the axial tensile strength of the pipe 10. The putty powder can be special filling putty powder which has certain strength and is polished after being hardened, so that the roughness of the surface of the pipeline 10 is more than or equal to 30 mu m.
Specifically, the surface of the pipe 10 is painted with a layer of resin-based primer.
The resin-based primer improves the adhesion of the surface of the pipe 10 and ensures that the filler is tightly bonded to the pipe 10.
The end face of the first sleeve 21, which is jointed with the second sleeve 22, is an inclined surface, and the inclined surface of the first sleeve 21 and the inclined surface of the second sleeve 22 form a welding groove.
The inclined surface of the first sleeve 21 and the inclined surface of the second sleeve 22 form a welding groove for facilitating welding, and the welding rod is dissolved into a liquid state and then filled into the welding groove, so that the first sleeve 21 and the second sleeve 22 are welded into the integral cylinder 20. Alternatively, instead of providing the end surfaces of the first sleeve 21 and the second sleeve 22 that are joined to each other as inclined surfaces, a connecting piece may be added to the joint, and then the connecting piece may be welded to the first sleeve 21 and the second sleeve 22.
It will be appreciated that the engagement of the first sleeve 21 and the second sleeve 22 is not limited to the welding, such as the use of a strong adhesive.
Further, the insulating sealing sleeve 30 is rigid polyurethane.
The rigid polyurethane has good insulating property, can prevent the cylinder 20 and the pipeline 10 from forming a corrosion circuit, and plays an axial protection role in the pipeline 10.
As shown in fig. 3 and 4, the sealing member 213 is 3mm to 5mm away from the end of the cylinder 20, the ring height of the sealing member 213 is 5mm to 10mm, and the ring thickness of the sealing member 213 is 2mm to 5 mm.
With d1D is 3mm or less from the sealing member 213 to the end of the cylinder 201Less than or equal to 5mm in d2D is the ring height of the sealing element 213 and is more than or equal to 5mm2Less than or equal to 10mm in d3D is greater than or equal to 2mm and is the ring thickness of the sealing element 2133Less than or equal to 5mm, the sealing ring 23 is formed by the butt joint of the sealing element 213 on the first sleeve 21 and the second sleeve 22, d1、d2、d3The size of which determines the volume of the capsule 40. The sealing member 213 can increase the strength of the first sleeve 21 and the second sleeve 22, thereby playing a role of reinforcing rib, preventing the first sleeve 21 and the second sleeve 22 from deforming before installation, and simultaneously, because the two sealing rings 23 at the two ends of the cylinder 20 have the same size, ensuring the roundThe gap between the barrel 20 and the insulating sealing sleeve 30 is made uniform everywhere to transmit the stress of the defective portion 11 of the pipe 10 to the barrel 20 sufficiently.
In particular, the pipe 10 is provided with viscoelastic bodies and/or polypropylene cold-wound strips (not shown) in the areas not covered by the cylinder 20.
The viscoelastic body and/or the polypropylene cold-wound tape, which is wound around the pipe 10 in the area not covered by the cylinder 20 to protect the pipe 10 from corrosion, has corrosion-preventing properties.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a pipeline defect reinforcement prosthetic devices, its characterized in that, pipeline defect reinforcement prosthetic devices includes:
the sealing device comprises a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are combined to form a cylinder and form a combined line in the axial direction, sealing parts are arranged at two ends of the first sleeve and the second sleeve respectively, the sealing parts are positioned on the inner side surfaces of the first sleeve and the second sleeve, and the sealing parts at the same end of the cylinder are combined with each other to form a sealing ring;
the surface of the cylinder covering the defect part of the pipeline surrounds the pipeline, and an insulating sealing sleeve is arranged between the sealing ring and the pipeline;
and a sealing cavity formed by the surface of the pipeline and the cylinder is filled with filler.
2. The pipe defect reinforcement repair device of claim 1, wherein the filler is a thermoset filler, and the thermoset filler fills the seal cavity.
3. The pipe defect reinforcing and repairing device according to claim 1, wherein the cylinder is provided with a feeding hole, a discharging hole and a connecting pipe opening.
4. The pipe defect reinforcement repair device of claim 1, wherein the recessed portion of the pipe surface is filled with putty powder to flatten the pipe surface.
5. The pipe defect reinforcement repair apparatus of claim 3, wherein the roughness of the pipe surface is greater than or equal to 30 μm.
6. The apparatus of claim 1, wherein the surface of the pipe is painted with a resin-based primer.
7. The pipe defect reinforcement repair device of claim 1, wherein the end surfaces of the first sleeve and the second sleeve that engage with each other are beveled surfaces, and the beveled surfaces of the first sleeve and the beveled surfaces of the second sleeve form a weld groove.
8. The pipe defect reinforcement repair device of claim 1, wherein the insulating sealing boot is rigid polyurethane.
9. The pipe defect reinforcement repair apparatus of claim 1, wherein the seal is 3mm to 5mm from the end of the cylinder, and wherein the ring height of the seal is 5mm to 10mm and the ring thickness of the seal is 2mm to 5 mm.
10. The pipe defect reinforcement repair apparatus of claim 1, wherein the area of the pipe not covered by the cylinder is provided with a viscoelastic body and/or a polypropylene cold-wound strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285041.4U CN210344707U (en) | 2019-08-08 | 2019-08-08 | Pipeline defect reinforcement prosthetic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285041.4U CN210344707U (en) | 2019-08-08 | 2019-08-08 | Pipeline defect reinforcement prosthetic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344707U true CN210344707U (en) | 2020-04-17 |
Family
ID=70174330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921285041.4U Active CN210344707U (en) | 2019-08-08 | 2019-08-08 | Pipeline defect reinforcement prosthetic devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344707U (en) |
-
2019
- 2019-08-08 CN CN201921285041.4U patent/CN210344707U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7168743B2 (en) | Means to seal terminal ends of pipe sleeves | |
| CA2920639C (en) | Method for protecting a welded joint between pipes having an interior coating | |
| US9738798B2 (en) | Method of repairing leakage in pipelines | |
| JPH0611092A (en) | Method of repairing partial damage of pipeline | |
| US4772031A (en) | Acrylic adhesive sealant and leak sealing method | |
| WO2008113248A1 (en) | Flange with cooling groove, pipeline with said flange and connecting method therefor | |
| CN105670556A (en) | Carbon fiber reinforcement technology for corrosion and protection of petrochemical device | |
| CN210344707U (en) | Pipeline defect reinforcement prosthetic devices | |
| CN108758159B (en) | Plugging method for pitting equipment by adopting photo-curing material | |
| JP5651150B2 (en) | Ship maneuvering apparatus and method for producing ship maneuvering apparatus | |
| CN105508799A (en) | Novel quick root plugging system | |
| CN105351677A (en) | Method for repairing gas pipeline system in gas delivering process | |
| JPS6319225B2 (en) | ||
| CN115076510B (en) | Repairing device and repairing method for reinforcing and repairing pipeline lining | |
| RU2374551C2 (en) | Method for repair of pipeline defects | |
| US20120211916A1 (en) | Method of strengthening the connection between pipe sections in high pressure pipelines | |
| CN110358257A (en) | A kind of restorative procedure of filler and defect of pipeline | |
| CN111237583A (en) | Drainage type clamp and method for plugging double-metal composite pipe puncture under pressure by utilizing same | |
| US20230021427A1 (en) | Casing system and method for pipeline reinforcement and repair | |
| WO1998039592A2 (en) | Apparatus and methods for lining of pipes | |
| CN210291141U (en) | Bolt fastening clamp for oil conveying pipeline | |
| RU2563945C1 (en) | Method of pipeline strengthening using soldered-welded coupling | |
| CN218937592U (en) | High-pressure-resistant internal leakage-proof thermocouple thermometer | |
| CN113137201B (en) | Chemical method repairing device and method for petroleum casing pipe | |
| EP1210544A1 (en) | A pipe liner, a liner product and methods for forming and installing the liner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |