CN103032651A

CN103032651A - Method for repairing and/or reinforcing pipeline

Info

Publication number: CN103032651A
Application number: CN2012105168175A
Authority: CN
Inventors: 杰弗里·理查德德容
Original assignee: Merit Technologies Sdn Bhd
Current assignee: Merit Technologies Sdn Bhd
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2013-04-10

Abstract

The invention discloses a method for repairing and/or reinforcing a pipeline. The method comprises the steps of cleaning the affected area on the surface of the pipeline so as to provide a clean pipeline surface for the area to be repaired, adding a continuous strap around the part in front of the affected area and allowing the continuous strap to extend to the part behind the affected area. The continuous strap forms a spiral sleeve and the spiral sleeve is spaced from the pipeline surface, and therefore an annular cavity is provided between the pipeline surface and spiral sleeve.

Description

The method that is used for repairing and/or reinforcing pipes

The application is that international filing date is that June 24, application number in 2008 are 200880129980.8, name is called the dividing an application of application for a patent for invention of the method for reinforcing pipes " be used for repairing and/or ".

Technical field

The present invention relates to a kind ofly for repairing and/or the method for reinforcing pipes, and relate to particularly and nonexclusively a kind of like this method that can be applicable to repair and/or reinforce the pipeline of different-diameter and length.

Background technique

U. S. Patent 7,168,743 and U.S. Patent application 2007/0018448 method and the device of the end of the sleeve pipe that is used for being tightly connected are all disclosed.This sleeve pipe is used for repairing pipeline and usually being made of metal.These pipelines can be positioned on the ground or under water.In these two parts of United States specification, all disclose and used a kind of sleeve pipe 22 that is configured to around the eligible for repair zone placement of pipe surface.This means that sleeve pipe must be suitable for the diameter of pipeline, and be suitable for the eligible for repair length of pipeline.Like this, for the scope of operable various calibers, just need a large amount of sleeve pipes.May carry out at the multiple axial length of pipeline owing to repair, usual way is to make needed sleeve pipe for each repairing.Such one, sleeve pipe just can be suitable for required length and be suitable for equally required diameter.The Design and manufacture of sleeve pipe spends the several months sometimes.During this period, pipeline need to be closed owing to there is the risk of pipeline failure.This can cause great destruction.Under pipeline was for example being carried oil condition, the consequence of pipeline failure just may be great environmental nuisance.

Summary of the invention

According to exemplary aspect, provide a kind of for affecting pipeline repairing and/or the method for reinforcing, the method comprises: the involved area on the surface of cleanser conduit thinks that eligible for repair zone is by the clean surface of pipe surface; Part before involved area applies continuous band around pipeline, and allows continuous band to extend to involved area part afterwards.This continuous band forms screw shell, and this screw shell and pipe surface are spaced apart to provide annular chamber between pipe surface and screw shell.

Continuous band is that fibre-reinforced, mechanical seal, polymeric tapes or carbon fiber strengthen the HDPE band.

Continuous band can be by at least a being formed in the screw shell in overlapping and the interlocking.

Annular chamber can be filled to provide combination between pipeline and screw shell by packing material subsequently.This packing material can be selected from the group that is comprised of structural resin and mortar.

According to another exemplary aspect, provide a kind of influenced surface area be used to applying continuous band and think pipeline that the device of repairing is provided.This device comprises: bringing device, it comprises at least two parts, each part in these at least two parts has a plurality of rollers, the influenced surface area that these rollers are used for around and spread all over pipeline guides continuous band to form screw shell, and this screw shell is the axial length of the involved area of extensional pipeline at least; And supplier, it is for attachment of this at least one part in a plurality of parts of bringing device.This supplier comprises that at least one is used for the drive roller of continuous strap feeding to this at least one part of bringing device.

A part at least two parts comprises top board and base plate.Be extended with the guiding element of a plurality of roughly equal spacings between top board and the base plate.

At least one roller can rotatably be installed on each guiding element in a plurality of guiding elements, the top of contiguous this guiding element.

Supplier can also comprise to be supplied with top board and supplies with base plate; And a plurality of drivings and guide rod, these bars are being supplied with top board and are being supplied with between the base plate and extend.

At least one bar in these bars comprises roller and can be suitable for by drive systems.

This drive system can comprise sprocket wheel, the upper end of this at least one bar that this sprocket wheel is arranged in the top of supplying with top board and is attached to these bars fastenedly with this at least one bar of driving these bars around its longitudinal axis rotation.

Drive system can be configured to drive these bars and roller, so that continuous band is fed in these two parts of bringing device by supplier at least.

Description of drawings

In order to be expressly understood the present invention and to make it be easy to realize that now only describe illustrative embodiments of the present invention as example, this explanation is carried out with reference to appended illustrative accompanying drawing.

Among the figure:

Fig. 1 is the plan view of damaged pipe;

Fig. 2 is the stereogram that is in the phase I in the repair procedures;

Fig. 3 is the view corresponding to Fig. 2 that is in second stage in the repair procedures;

Fig. 4 is the view corresponding to Fig. 2 and 3 that is in the phase III in the repair procedures;

Fig. 5 is the view corresponding to Fig. 2 to 4 that is in quadravalence section in the repair procedures;

Fig. 6 is the view corresponding to Fig. 2 to 5 that is in five-stage in the repair procedures;

Fig. 7 is the plan view that has the damaged pipe of screw shell on its of Fig. 1;

Fig. 8 is the stereogram of Fig. 7;

Fig. 9 is the cross sectional representation that is sealed in the end cap of the screw shell of Fig. 7 and damaged pipe;

Figure 10 is the floor map of joint of the end cap of Fig. 9;

Figure 11 is the lateral cross figure that is positioned at the X place of the pipeline of Fig. 7;

Figure 12 is the longitudinal cross-section figure that is positioned at the Y place of the pipeline of Fig. 8;

Figure 13 is the close-up view that shows locating piece (spacer) of the pipeline of Figure 12;

Figure 14 is the side view of the divider of Figure 13; And

Figure 15 is the planimetric map of the divider of Figure 13.

Embodiment

As shown in fig. 1, need to place under repair to pipeline 10.The initial step that preparation places under repair to pipeline 10 be according to known blasting by abrasives technology or high pressure liquid sandblast technology carry out removing rusty stain and cated residue, thereby expose bare metal face etc. on the surface of pipeline.The blasting by abrasives that pipeline 10 is carried out can nonferrous by utilizing (for example, garnet, aluminium oxide and copper ashes), the swipe sandblast of the meticulous sandblast of glass bead or stainless shot realizes.Maximum cleaning speed and the most effective cleaning obtain by the sandblast of system.This operation is closed in 30cm ²In, and carry out equably sandblast until finish to every square centimeter.Continue the minimum 25mm of sandblast entering into arbitrary adjacent coating area, and the edge is dug thin.

Be subjected to the impact of the situation of pipeline 10, can be positioned over around the outer surface of pipeline 10 predetermined spacing place along the composite reinforcement of pipeline longitudinal extension.

Referring now to Fig. 2, show an exemplary embodiment of the present invention.In this case, first portion's adjacent conduit 10 of bringing device 12 is placed.Bringing device 12 is that part is around the arcuate section of pipeline 10.It can be as illustrating for 180 ° of pipeline or can being for less sections.First portion 12 can be essentially rigidity, perhaps can be attached a plurality of sections pivotally each other, thereby first portion 12 can be used for the pipeline of multiple different-diameter.As selection, first portion 12 can be used for the pipeline 10 of predetermined diameter and can extend 180 ° around pipeline.The diameter of first portion 12 can change with the diameter of different pipelines.

First portion 12 has top board 14 and base plate 16.What extend between top board 14 and base plate 16 is the guiding element 18 that a plurality of approximate equality intervals are opened.Be rotatably installed on each guiding element 18, the top of contiguous guiding element 18 be a plurality of rollers 20.Except a plurality of independent rollers 20, large-scale single roller or the middle-sized roller of lesser amt can be set.Roller 20 extends the part of the axial length of guiding element 18, and is held the upper end of contiguous guiding element 18.

As shown in Figure 3, be placed on the second portion 22 of bringing device in the appropriate location subsequently, align with first portion 12 and be anchored on this first portion 12.In addition, second portion 22 has top board 24 and base plate 26, and guiding element 28 betweens extend and equal spacings roughly.Guiding element 28 also has the roller 30 of contiguous upper end.In essence, second portion 22 is roughly the same with first portion 12.

For different pipe diameters, second portion 22 can be attached a plurality of sections pivotally each other.Such one, they may be unlocked or close the pipeline with accommodating different-diameter as required.Nature for large-diameter pipeline, can need more than two

parts

12,22.

What be attached to the second attachment portion 22 is supplier 32.This supplier 32 comprises top board 34 and base plate 36.Between top board 34 and base plate 36, be extended with a plurality of drivings and guide rod 38.On some or all of bars 38 is roller 40.Each bar 38 is suitable for being driven by the drive system 42 that comprises sprocket wheel 44, and this sprocket wheel 44 is positioned at the top of top board 34, but securely is attached to the upper end of each bar 38.Each sprocket wheel 44 rotates driveshaft 38 around its longitudinal axis.Be provided with chain 46 with driving sprocket wheel.A bar 48 in the bar 38 can hold the drive system (not shown) such as electro-pneumatic motor, speed reducer and battery.Can use any suitable drive system.It can be can Self-operating maybe can have the external power supply (not shown).

Drive system 42 is intended to driveshaft 38 and roller 40, thereby band 50 can be fed in two

parts

12,22 of bringing device by supplier 42.

Band 50 is polymeric tapes continuous, fibre-reinforced, mechanical seal.For example, band 50 can be that carbon fiber strengthens high density polyethylene (HDPE) (HDPE) band.As shown in Fig. 4 to 6, supplier 32 feedings of band 50 by being driven by conduit system 42.Its feeding between bar 38, and these bars are arranged on the both sides of longitudinal axis of supplier 32, are in the sequence alternately.Band 50 is reeled around pipeline 10 and is formed continuous, overlapping or mechanical interlocked screw shell 52 around pipeline 10.Along with band 50 forms this screw shell 52, this screw shell 52 will be pulled out from

attachment portion

12,22 under action of gravitation.This be since the external diameter that screw shell 52 equals screw shell 52 because of the internal diameter of base plate 26 and top board 24 not in the vertical direction suffer restraints.For the horizontal arrangement pipeline, screw shell 52 still can form in the situation of gravity pulling not having, because the feeding of band 50 is effectively driven by drive system 42.The feeding of band 50 can reach the degree that forms screw shell 52 by being in suitable angle.When pipeline 10 when being not vertical, this also helps to form screw shell 52.Therefore, the screw shell 52 of band 50 will be by on pipeline 10, around the impaired part of pipeline 10-be that eligible for repair part forms sleeve pipe 52.Preferably, screw shell 52 begins and extends beyond this impaired part of pipeline 10 before the impaired part of pipeline 10, thinks that actual load to the transmission of pipeline 10 provides required.

The two ends of screw shell 52 can be provided with end cap 70, and this end cap 70 is sealed to screw shell 52 as shown in Fig. 7 to 9.End cap is preferably made by polyethylene (PE), and comprises ingress port 72 and outlet port 74, and these ports can be for example made according to previous described U. S. Patent 7,168,743 or U.S. Patent application 2007/0018448.Be provided with the Sealing such as " Teflon " Sealing 78 between end cap 70 and the screw shell 52 and between end cap 70 and the pipeline 10.End cap 70 preferably has the flexible hook of general type, be used for being assemblied in pipeline 10 around, and by the connector such as PVC＝polyvinyl chloride (PVC) or PE connector 76 as the planimetric map in Figure 10 as shown in fastened firmly.

As shown in Figure 11 and 12, the diameter of screw shell 52 is sized to and forms annular chamber 80 between pipeline 10 and screw shell 52.Annular chamber 80 is radially changing between the 25mm to 50mm on the degree between the internal surface of the outer surface of pipeline 10 and screw shell 52.The radial dimension of annular chamber 80 will depend on the use condition of involved area of the pipeline 10 of all as required recessed, wall projections, the out of roundness of pipeline and volume of longitudinal reinforcer and so on.Annular chamber 80 preferably by between screw shell 52 and pipeline 10, install such as polymer locating piece 82 locating piece and fastened firmly.Each polymer locating piece 82 is preferably the Y shape with two arms 85 and a leg 88.Each arm 85 comprises for the dihedral end 86 that all engages jag spike 90.Jag spike 90 preferably has the multilayer barb that is similar to miniature Christmas trees.Jag spike 90 is used for band 50 is remained on the appropriate location.Locating piece 82 is preferably by manually being inserted during forming screw shell 52 each locating piece 82 is clamped between two jag spikes 90 at coiling band 50.For diameter is no more than 3m to 4m up to about 20 inches to 24 inches and length screw shell 52, will not need locating piece 82 because screw shell 52 will be enough firm, so as during the coiling of band 50 around pipeline by automatically spaced apart rightly.The rigidity of screw shell 52 is further guaranteed in the installation of end cap 70, and the spacing of correction screw shell 52 and pipeline 10 is to form annular chamber 80.

When screw shell 52 is finished, the water that is present in the annular chamber 80 will be discharged from by pressurized air or other gas that outlet port 74 is discharged by means of applying to enter and allow by inlet ports 72.Subsequently, can utilize clear water to wash this annular chamber 80, and clear water is by utilizing air or inert gas to be removed.Subsequently, according to known technology, providing in the situation of combination between pipeline 10 and this screw shell 52 by being incorporated into pipeline 10 and screw shell 52, utilize known structure resin or mortar 84 to fill this annular chamber 80.Jag spike 90 further anchors to screw shell 52 in structural resin or the mortar 84.Subsequently, can remove

attachment portion

12,20 and supply system 32 and finish pipe-line reconditioning.Preferably, when bottom head covers 70 is installed, remove attachment portion 12,20.Screw shell 52 is left in the appropriate location to arrange externally reinforced and protective layer at this structural resin or mortar 84.

Although described illustrative embodiments in above-mentioned specification, the those skilled in the art will be appreciated that, without departing from the invention, can make multiple change to the details of design, structure and/or operation.

Claims

1. one kind is used for applying continuous band and thinks that the influenced surface area of pipeline provides the device of repairing, and described device comprises:

Bringing device, described bringing device comprises at least two parts, each part in described at least two parts has a plurality of rollers, described a plurality of roller be used for guiding described continuous band around and the described influenced surface area that spreads all over described pipeline forming screw shell, described screw shell extends the axial length of involved area on the surface of described at least pipeline; And

Supplier, described supplier is for attachment of at least one part in described at least two parts of described bringing device, and described supplier comprises that at least one is used for the drive roller of described continuous strap feeding to described at least one part of described bringing device.

2. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 1 provides the device of repairing, wherein, each part in described at least two parts comprises top board and base plate, is extended with the guiding element of a plurality of roughly equal spacings between described top board and described base plate.

3. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 2 provides the device of repairing, and wherein, at least one roller rotatably is installed on each guiding element in described a plurality of guiding element, the top of contiguous described guiding element.

4. the device of repairing is provided such as the described influenced surface area be used to applying continuous band and think pipeline of in the claims 1 to 3 each, and wherein, described supplier further comprises to be supplied with top board and supplies with base plate; And a plurality of drivings and guide rod, described driving and guide rod extend between described supply top board and described supply base plate.

5. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 4 provides the device of repairing, and wherein, at least one bar in the described bar comprises roller.

6. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 4 provides the device of repairing, and wherein, at least one bar in the described bar is suitable for by drive systems.

7. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 5 provides the device of repairing, and wherein, at least one bar in the described bar is suitable for by drive systems.

8. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 6 provides the device of repairing, wherein, described drive system comprises sprocket wheel, described sprocket wheel is arranged in the top of described supply top board and securely is attached to the upper end of described at least one bar of described bar, is used for driving described at least one bar of described bar around its longitudinal axis rotation.

9. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 7 provides the device of repairing, wherein, described drive system comprises sprocket wheel, described sprocket wheel is arranged in the top of described supply top board and securely is attached to the upper end of described at least one bar of described bar, is used for driving described at least one bar of described bar around its longitudinal axis rotation.

10. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 6 provides the device of repairing, wherein, described drive system is configured to drive the described roller of described at least one bar in described bar and the described bar, so that described continuous band is fed in described two parts of described bringing device by described supplier at least.

11. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 7 provides the device of repairing, wherein, described drive system is configured to drive the described roller of described at least one bar in described bar and the described bar, so that described continuous band is fed in described two parts of described bringing device by described supplier at least.

12. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 8 provides the device of repairing, wherein, described drive system is configured to drive the described roller of described at least one bar in described bar and the described bar, so that described continuous band is fed in described two parts of described bringing device by described supplier at least.

13. the influenced surface area be used to applying continuous band and think pipeline as claimed in claim 9 provides the device of repairing, wherein, described drive system is configured to drive the described roller of described at least one bar in described bar and the described bar, so that described continuous band is fed in described two parts of described bringing device by described supplier at least.