CN207449149U

CN207449149U - The system of at least two polyolefin tubulose component end opposite ends engagement

Info

Publication number: CN207449149U
Application number: CN201720262933.7U
Authority: CN
Inventors: J·M·索萨; L·塞尔康
Original assignee: Milliken Infrastructure Solutions LLC
Current assignee: Csc Operations Ltd; Sparta Acquisition LLC
Priority date: 2016-03-23
Filing date: 2017-03-17
Publication date: 2018-06-05
Anticipated expiration: 2027-03-17
Also published as: CN107225766A; WO2017164969A1

Abstract

The utility model is related at least two polyolefin tubulose component end opposite ends engagement system, the system comprises：It is placed at least two tubular part described in pipe fitting so that their corresponding ends are in pipe fitting；Using and be bound at least part of transition film of the pipe fitting and at least two tubular part, the transition film has the first side and the second side, and first side is suitable for being bound on polyolefin；And hardened system, it is applied in the transition film, wherein the hardened system includes being bound to the fibre-reinforced polyurethane of the second side of the transition film or fibre-reinforced epoxy-resin systems.

Description

The system of at least two polyolefin tubulose component end opposite ends engagement

Technical field

The utility model generally relates to polyolefin pipe and other structures, and more particularly relate to repair and/or Engage polyolefin pipe and the device of other structures.

Background technology

Polyolefine material includes as follows：Thermoplastic polyolefin：Polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), PB Polybutene-1 (PB-1)；Polyolefin elastomer (POE)：Polyisobutene (PIB), EP rubbers (EPR), EPDM list Body (M- grades) rubber (EPDM rubber).These materials are used to deliver or transport especially in tubular structure (namely pipeline) There may be this kind of medium of corrosive chemical property.For example, Gas Company usually uses PE and PP pipelines.Such pipeline sheet Body can the outside of pipe be subjected to corrosivity or other physically or chemically damage in the environment of condition and use also making.Polyolefin is also The material of the structure such as holding vessel for the various other types that can be used in rugged environment, pressure vessel etc..

When using polyolefin in specific application, often need to end-to-end connect two sections of pipeline certainly It closes.A kind of method for completing such engagement is by the way that pipe section is welded together.In the technology of commonly known as welding In, two pipe sections are heated by the welded plate of heating disk-form, so that the end of pipe becomes to melt.Welded plate then remove and Depending on wall thickness and pipe diameter, pipe section is forced together with some predetermined power with the predetermined duration.As a result It is that weld typically has the pearl cap (bead cap) for surrounding perimeter.Due in the heat affected area stress difference opposite sex that may be present Deng there are known potential problems for such weld.Or due to external force such as soil movement or physical impact or due to material Passage at any time becomes fragile, and passage weld at any time is easy to crack.

Various types of joint connection in site can also be carried out to polyolefin pipe.These include connector (couplings) for example Curved, reducing joint etc. is managed in threeway.The some form of crimp force of joint connection in site generally use presses together joint.These Compression bonding method has been notified introduces micro-crack in pipeline material.Due to circulating pressure (cyclic pressures), exposed to temperature Under degree fluctuation, the embrittlement of material etc., the passage of these micro-cracks at any time can increase, and cause to fail or leak.

It will be appreciated by the skilled addressee that polyolefin is due to its molecular density and low-surface-energy, it is itself property It is difficult to the material combined.Which prevent most types of material completely effectively is attached to the simplest of polyolefin surfaces Method.Therefore, it is less able to repair the polyolefin structure deteriorated by mechanism as described above so far.Pipeline may Show mechanical damage, including can as crimping connect caused by micro-crack growth.Certainly, this be undesirable, so The defects of may be such that leakage, it is dangerous to personal or environment structure.

Utility model content

It is (especially (but unlimited the utility model is related to be used to repairing polyolefin structure in view of the item of above and other In) PE or PP pipelines) method and apparatus.In particular it relates to

The system of at least two polyolefin tubulose component end opposite ends engagement, the system comprises：

It is placed at least two tubular part described in pipe fitting so that their corresponding ends are in pipe fitting；

Using and be bound at least part of transition film of the pipe fitting and at least two tubular part, it is described Transition film has the first side and the second side, and first side is suitable for being bound on polyolefin；And

Hardened system is applied in the transition film, wherein the hardened system includes being bound to the of the transition film The fibre-reinforced polyurethane or fibre-reinforced epoxy-resin systems of two sides.

In one embodiment, the transition film is bi-material layers co-extruded films.

In another embodiment, the distance between the end of the tubular part in the pipe fitting is less than About 5 millimeters

In another embodiment, the transition film of the hardened system covering at least 95%.

In an embodiment of the utility model, the failure area of polyolefin pipe is applied with filling material as needed Material is with the crackle of fill pipe, gap or other deteriorations.After packing material is used, transition film is administered to the area repaired On domain.Transition film has the first side being suitably joined on polyolefine material.Cohesive process may include to apply heat/or compression stress. After transition film is applied and is combined, hardened system (such as application of fibre-reinforced polyurethane) is applied to restoring area with complete Into repair process.

In the another embodiment of the utility model, it will repair or enhance at butt welding.In some cases, it can be possible to It is necessary to the pearl caps formed in the welding process by smooth or elimination to prepare weld.In this embodiment, fill Material is not required.The above-mentioned transition film referred to is administered on weld and is bound to the joining section of pipeline.Then, will reinforce Systemic application in transition film to complete the reparation of weld or preventative reinforcing.

In the another embodiment of the utility model, by be similar to it is above-mentioned for repair or reinforce it is butt-welded in a manner of When repairing or reinforce crimp region, such as connecting at the scene.

Description of the drawings

With reference to attached drawing with reference to the embodiment of the utility model the following specifically describes the utility model is best understood, In identical reference numeral represent identical element, wherein：

Fig. 1 is the side longitdinal cross-section diagram according to a segment pipe to be repaired for an embodiment of the utility model；

Fig. 2 is the side longitdinal cross-section diagram of the pipeline of the Fig. 1 for the failure area that packing material is applied to pipeline；

Fig. 3 is the side longitdinal cross-section diagram of the pipeline of the Fig. 2 of transition film application thereon；

Fig. 4 is the side longitudinal cross-section of the pipeline for Fig. 3 that hardened system is applied to above the restoring area including transition film Figure；

Fig. 5 is the two of the pipeline of the end-to-end aligned of the preparation bonding operation of an embodiment according to the present utility model The side longitdinal cross-section diagram of a section；

Fig. 6 is the side longitdinal cross-section diagram of two sections of the pipeline for Fig. 5 that transition film is applied to engaging zones；

Fig. 7 is the side longitdinal cross-section diagram of two sections of the pipeline for Fig. 5 that hardened system is administered to above transition film；

Fig. 8 is the side longitdinal cross-section diagram that two sections of pipeline are welded together using conventional fusion techniques；

Fig. 9 is two welding of the pipeline of Fig. 8 for reinforcing weld of an embodiment according to the present utility model The side longitdinal cross-section diagram of section；

Figure 10 is the flow chart for illustrating a step of embodiment according to the present utility model repairs tubular part；

Figure 11 is the flow chart for illustrating the step of another embodiment according to the present utility model repairs non-tubular shape component.

The system that Figure 12 shows the engagement of at least two polyolefin tubulose component end opposite ends.

Figure 13 shows pipe fitting of the tool there are three tubular part.

Figure 14 shows pipe fitting of the tool there are four tubular part.

Specific embodiment

In following disclosure, for the sake of clarity, all features actually performed are not described.It should be understood, of course, that In any this research actually performed, in the project any, it is necessary to carry out many engineerings and technology decision-making with Realize the specific objective of developer and sub-goal (for example, meeting the constraint of system and technology), this goes to another hold at one Row is different from each other.Further it has to be noted that the appropriate engineering practice related with environment.It should be appreciated that this R＆D work is complicated With it is time-consuming, outside the knowledge base of common unprofessional person, but will be for those of ordinary skill in the related art Normal work to do.

With reference to figure 1, which show the sections of the polyolefin pipe (such as PE or PP pipelines) represented with reference numeral 10 Longitdinal cross-section diagram.As shown in Figure 1, pipeline 10 has failure area 12, pipeline 10 has deteriorated at this.Although the implementation of Fig. 1 Scheme include pipeline, benefit from the disclosure it will be appreciated by the skilled addressee that the utility model can be in other types PE structures on implement.

Fig. 2 illustrates the first step of the restorative procedure of the exemplary implementation scheme according to the utility model, wherein according to need Packing material 14 is applied on failure area 12 to fill failure area 12.In one embodiment, packing material 14 Can be polyester, epoxy resin, vinyl esters, polyurethane, thermoplastic material, rubber composition (rubber compound) or Acrylic compounds such as methacrylate or thermoplastic material.

Once packing material is applied in and is cured or hardened, the embodiment according to disclosed in the utility model be in next step by Transition film 16 is covered in the section that pipeline is repaired, as shown in Figure 3.In the existing preferred embodiment of the utility model In, transition film 16 includes the coextruded multilayer binder film Nolax S22.2202 available commercially from Nolax AG, and the said firm is total Portion is in the member of the Colla no Group of Switzerland Sempach Station.Refer to www.nolax.com.

The preferred attribute of transition film 16 be its be suitable on one side thereof effectively with polyolefine material such as PE, EVA, EPOM and PP is combined, and is suitable on opposite sides thereof with reference to PVC, polyurethane, ABS, PC, PA etc..

In an exemplary embodiment, transition film surrounds the length package for the pipeline 10 repaired.The common skill in this field Art personnel are, it will be recognized that the combination of film 16 and pipeline 10 must be activated.In general, this is realized by applying heat and compression stress. A kind of method for realizing this point is by using heat activated shrinkage band (not shown), such as can be located at the U.S. from general headquarters " 20% shrinks release coating volume (shrink to 220R 4 commercially available from the Dunstone Co., Ltds in North Carolina state Xia Luote cities release coated roll).Refer to www.shrinktape.com.

Once film 16 is had been integrated on the region repair of pipeline 10, outer layer hardened system 18 is administered to and is repaiied Multiple region, as shown in Figure 4.It notices before application outer layer hardened system 18, preferably removes shrink belt or for activating Other means of the combination of film 14 and pipeline 10, therefore be not shown in Fig. 4.In a preferred embodiment party of the utility model In case, outer layer hardened system 18 includes A+Wrap^TM, it is the glass fiber reinforcement substrate by being impregnated with the polyurethane of moisturecuring The high intensity band that (fiberglass reinforced substrate factory) is formed.A+Wrap^TMIt can be from Pipe Wrap Co., Ltd, Houston, Texas are commercially available.Referring to http： //www.piperepair.net/products/ Structural-repair/a-wrap/ is incorporated herein by reference in their entirety.In another embodiment, outer layer reinforces system System 18 includes fibre-reinforced epoxy-resin systems, such as FormaShield^TM, also commercially available from Pipe Wrap Co., Ltds It obtains.Referring to http://www.piperepair.net/products/structural/repair/formashiel d/, It is incorporated herein by reference in their entirety.

The means of the polyolefin structure such as structure repair of PE pipelines are realized except providing, as described in reference chart 1-4 above, It is contemplated that the utility model can be used for forming joint between two sections of pipeline, grasped around to conventional welding The demand of work.This is as illustrated in figs. 5-7.

Specifically, Fig. 5 shows the longitdinal cross-section diagram of two sections of the pipeline that reference numeral 20 and 22 indicates.Pipe section 20 and 22 end-to-end placements are to prepare to establish joint therebetween.

Fig. 6 shows the corresponding pipe sections 20 and 22 of Fig. 5 that transition film layer 24 is attached to above engaging zones.As before State described in embodiment, the one side of transition film layer 24 is compatibly attached on polyolefin, and the combination can by apply heat and Compression stress activates.

Fig. 7 shows corresponding pipe section 20 and 22, wherein, hardened system 26 applies on the region of transition film 24 And combine pipe section 20 and 22.Above-mentioned A+Wrap^TMOr Formashield^TMProduct is considered for the utility model aim Suitable hardened system 26.

It is additionally considered that the utility model may be used as precautionary measures, the conventional weld between two sections of reinforced pipe It is perfect.Fig. 8 shows two sections 28 and 30 of polyolefin pipe, they are welded to one using conventional fusion techniques It rises.As previously noted, such technology is typically resulted in forms pearl cap 32 around weld.

Fig. 9 shows pipe section 28 and 30, and a weld embodiment according to the present utility model therebetween is reinforced. Pearl cap 32 is apparent from from Fig. 9 to remove preferably in application and before combining transition film 32 and hardened system 34.

Figure 10 is turned to, the flow chart for illustrating the restorative procedure of an embodiment according to the present utility model is shown.Tool Body, the described methods of Figure 10 are considered as to repair the preferred method of tubular part such as pipeline.

As shown in Figure 10, the first step 40 be cleaning restoring area, such as be suitble to solvent, to ensure in repair process Optimal combination.

As described above, 42 it is in next step as needed to apply packing material to provide the reparation surface of relative smooth.Depend on In the characteristic for the damage repaired, step 42 can be necessary or unnecessary.As described above, suitable packing material can be Polyester, epoxy resin, vinyl esters, polyurethane, thermoplastic material, rubber composition or acrylic compounds such as methacrylate or Thermoplastic material.

44 be to apply bi-material layers to be coextruded transition film to restoring area in next step.In one embodiment, transition film is extremely The combination of restoring area is completed by applying heat (such as with heat gun etc.), as indicated by block 46.

Next in frame 48, hardened system is applied on restoring area.Above-mentioned A+Wrap^TMOr FormaShield^TM System is all the alternative of hardened system.

Next in frame 50, compression stress is applied to restoring area.As described above, complete its mode be by using Shrink belt is surrounded the tubular part repaired and wrapped up and with after-applied heat by shrink belt, such as using heat gun, so that Banding wrappage to surround tubular part and restoring area is tightened or compressed.

As described in frame 52, cure hardened system, means (such as the thermal contraction for applying compression stress can be removed at this moment Band).

Figure 11 is turned to, the embodiment for showing the utility model may be advantageously used with and repair non-tubular shape polyolefin Component.This method is since frame 56, wherein preparing to repair surface by using suitable solvent cleaning.Such as previous embodiment, Packing material can be applied or can not applied, as shown in Figure 11 centers 58.

In block 60, using bi-material layers co-extruded films, as described above.As shown in block 62, heat is to be attached to transition film Repair the preferred method on surface.Then, hardened system described above is applied.

In the embodiment of Figure 11, in next step in frame 66, apply release film on hardened system.Preferably implementing In scheme, release film is the porose PE pieces of silicone treated.As shown in frame 68, after application release film, in restoring area Upper application absorbs cloth material (bleeder cloth material).In one embodiment, it is nonwoven to absorb cloth material Polyester material is suitble to absorb the extra resin come out from hardened system in the curing process.

Pressure is applied to restoring area with the curing of curing system using vacuum bag pressure system.In the frame 70 of Figure 11 In, it is sealed around restoring area with vacuum bag.In one embodiment, using true to create based on the double faced adhesive tape of zinc oxide The sealing of empty bag, vacuum bag can be such as density polyethylene film with high.

In block 72, for restoring area, applying vacuum pressure is with rolling compression vacuum bag.The compression stress retention time is with reinforcing system Time needed for system curing is equally long, when being usually 2 to 4 small.

With reference to Figure 12, at least two polyolefin tubular parts 20, the system of 22 end-to-end engagements are shown.Described two pipes Shape component 20,22 is placed in pipe fitting (coupler) 110 so that its corresponding end is in pipe fitting 110.Using transition film It 24 and is attached at least a portion of 110 and at least two tubular part 20,22 of pipe fitting.Transition film have the first side and The second side, the first side are suitably joined on polyolefin, and the placement of transition film causes first side to tubular part 20,22.Add Gu system 26 is administered in transition film 24.Preferably, hardened system includes fibre-reinforced polyurethane or fibre-reinforced epoxy Resin system.Hardened system 26 is attached to the second side of transition film.

Transition film 24 and hardened system 26 can be 24 Hes of arbitrary transition film described in any other embodiment Hardened system 26.

When tubular part 20,22 corresponding ends are placed in pipe fitting 110, the pipe fitting limits pipe fitting joint (connection joint includes a part for pipe fitting and the tubular part in pipe fitting).Preferably, when transition film 24 is applied and When being bound at least a portion of 110 and at least two tubular part 20,22 of pipe fitting, around pipe fitting 110 and pipe Shape component 20,22 wraps up.The package of transition film 24 preferably completely covers pipe fitting 110.Being wrapped in for transition film 24 is connect by pipe At least about 0.5 inch more preferable 1 inch is preferably extended on tubular part 20,22 behind the end of head.

In one embodiment, the combination of transition film to the corresponding end of tubular part includes applying heat to transition film. In one embodiment, the combination of transition film to the corresponding end of tubular part is included with hot activation shrinkage band package pipeline simultaneously Heat damage region is to activate transition film to the cohesive process of the corresponding end of tubular part.

In one embodiment, it is included in wrapped strengthening system in transition film using hardened system in transition film. In one embodiment, the surface region of transition film is covered less than 100% or less than 90% by hardened system.In another implementation In scheme, the essentially all surface region of transition film is covered by hardened system." essentially all " is herein defined as At least 95%.In another embodiment, the hardened system covering essentially all surface region of transition film and transition film area At least a portion of tubular part beyond domain.

Pipe fitting can be made of any suitable material such as metal or polymer.It can be by identical with tubular part Or different materials is made.

Pipe fitting can accommodate more than two tubular part.Figure 13 shows that tool to connect there are three the pipe of tubular part 20,22,124 First 110.Figure 14 shows the pipe fitting 110 with 4 tubular parts 20,22,124,126.Pipe fitting may include more than 4 tubuloses Component.For each in the embodiment of Figure 13 and Figure 14, transition film and hardened system can be similar to shown in Figure 12 Mode is applied in a part for pipe fitting and tubular part.

The end of tubular part to be bonded together must be positioned in pipe fitting, but unnecessary physical contact.At one In embodiment, the makes physical contact of tubular part, between which is without other things.In another embodiment, end It is close to each other, separately less than about 5 millimeters, more preferably less than 3 millimeters.In another embodiment, end is with the distance of bigger point It opens, at a distance of about 0.5-2 inches.In another embodiment, there are material between the end of tubular part, such as in welding Material, adhesive, gasket or any other the suitable material formed in journey.

From description specifically above, obviously disclose to repair polyolefin knot to those skilled in the art Method and apparatus (system) of the structure such as PE or PP pipes and non-tubular structure such as holding vessel.Although specific implement carefully Section has been provided in the text, this is used for the purpose of usually illustrating the scope of the utility model limited in the following claims Purpose.It should be appreciated that in the case where not departing from the actual range of the utility model, disclosed embodiment can be carried out It is various to replace, change and/or change.

Claims

1. the system of at least two polyolefin tubulose component end opposite ends engagement, which is characterized in that the system comprises：

It is arranged at least two tubular part described in pipe fitting so that their corresponding ends are in pipe fitting；

Using and be bound at least part of transition film of the pipe fitting and at least two tubular part, the transition Film has the first side and the second side, and first side is suitable for being bound on polyolefin；And

Hardened system is applied in the transition film, wherein the hardened system includes being bound to the second side of the transition film Fibre-reinforced polyurethane or fibre-reinforced epoxy-resin systems.

2. system according to claim 1, which is characterized in that the transition film is bi-material layers co-extruded films.

3. system according to claim 1, which is characterized in that the end of the tubular part in the pipe fitting it Between distance be less than 5 millimeters.

4. system according to claim 1, which is characterized in that the transition of the hardened system covering at least 95% Film.