CN101204770A - Pressure structure clamp and fiber compound material combination expander technology - Google Patents
Pressure structure clamp and fiber compound material combination expander technology Download PDFInfo
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- CN101204770A CN101204770A CNA2007100627198A CN200710062719A CN101204770A CN 101204770 A CN101204770 A CN 101204770A CN A2007100627198 A CNA2007100627198 A CN A2007100627198A CN 200710062719 A CN200710062719 A CN 200710062719A CN 101204770 A CN101204770 A CN 101204770A
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- anchor clamps
- pipeline
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- reinforcement
- fiber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/1683—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of a patch which is fixed on the wall of the pipe by means of an adhesive, a weld or the like
Abstract
The invention relates to a repairing-reinforcing and an enhancement technique for a pressure pipeline, a pipe casting and a pressure container, in particular to a repairing-reinforcing technique and enhancement technique of the combination of fibre reinforced composite materials and a clamp injected with solidifiable polymers carried through on the structure and the using method as well as the application of the technique. The repairing-reinforcing and the enhancement technique of the invention is to pave one layer or multiple layers of the fibre reinforced composite materials on the parts needed repairing, reinforcing or enhancing firstly; then mounting the clamp on the outer surface of the fibre reinforced composite materials and fills the solidifiable polymers between the clamp and the pipeline, the pipe casting or the pressure container to finish the repairing-reinforcing and enhancement of the part. The repairing-reinforcing and the enhancement technique of the invention is suitable for carrying out temporary emergency repair or long term repairing-reinforcing and enhancement on various pipeline, pile casting and pressure container to prolong the service life and improve the safety operation pressure.
Description
Invention field
The present invention relates to the renovation reinforced and/or technique for enhancing of pressure texture, specifically, the present invention relates to use fibre reinforced composites and anchor clamps annotates the technology that curable polymer combines various pressure pipelines, pipe fitting, pressure vessel, storage tank etc. is carried out method and its application renovation reinforced and/or that strengthen.Described renovation reinforced and/or technique for enhancing is suitable for various pipelines, particularly oil and gas pipes rushes to repair under the situation of stopping transportation not temporarily, or the long-term repair reinforcement strengthens, and increases the service life, and improves operating pressure etc.
Background technology
Pipeline transportation is one of national economy five big transportatioies industry, kilometer surplus only China's oil gas long distance pipeline just reaches 50,000 at present.These pipelines are in the long service process, owing to be subjected to effects such as strata pressure, soil corrosion, galvanic corrosion, external force damage, it is frequent to cause accidents such as pipeline burst, leakage to take place, and influences the normal conveying operation of pipeline.Therefore, need under the situation that does not stop to carry, carry out renovation reinforced technique for enhancing.
In addition, also might occur improving Safety Operation Pressure and improving situations such as safety coefficient because of regional classification changes needs because of producing needs.Under this type of situation, in the whole tubing to because of produce to need improving Safety Operation Pressure and, must strengthening the needs that improve operating pressure and safety coefficient etc. to adapt to it because of regional classification changes section of tubing and the auxiliary equipment that needs to improve safety coefficient.
Abroad relevant for annotating the report that epoxy is repaired pipe technology in the sleeve pipe, have the pipeline of corrosion default for body, annotate the method for repairing and mending of epoxy resin in British Gas once reports and adopts and repaired.In annotate the epoxy resin shell, be to encircle failure area by two housings up and down to be formed by connecting, form annular space with pipeline, high-strength epoxy resin grout is injected in the sealed at both ends back of annular space forms.
It is bad to the stressed enhancing effect of pipeline axial that but above-mentioned sleeve pipe is annotated the reinforcement technology of epoxy, for example when there is crackle in pipeline girth weld and has the larger-size corrosion default of hoop, the pipeline axial bearing capacity often weakens greatly, at this moment need axial reinforcement, then this kind method just can not satisfy.
There are some to carry out the report of the outer damage defect reinforcement of metallic conduit in recent years about using carbon fibre composite.The patent CN1853847 of Beijing Anke Pipeline Project Technology Co., Ltd has reported the method with the reinforcement of carbon fibre composite butt welded seam defect repair, Chinese patent CN1616546 " carbon fibre composite that defective pipeline is renovation reinforced and method " discloses a kind of material of pipeline rehabilitation reinforcement and method of pipeline rehabilitation reinforcement of being used in addition, this material comprises that multilayer with the sticking impregnation dipping of definite composition or the carbon fibre composite of coating, can reach the excellent repairing reinforcing effect.Use this technology both can carry out the renovation reinforced of metallic conduit, also can reach the purpose that improves the operating pressure and the ability of permission simultaneously.But when corroded area and the degree of depth were all big, this method had certain limitation for the raising that improves the counter-bending ability of pipeline, and the technology that sleeve pipe is annotated epoxy then has certain advantage for improving the counter-bending ability of pipeline.For some special pipe fitting, for example the anchor block of pipeline owing to the construction geometry characteristic limitations, singly then is difficult to reach the enhancing effect with carbon fiber reinforcement in addition.
The inventor is through long term studies, a kind of new reinforcement that fibrous composite reinforcement technology is combined with anchor clamps notes curable polymer technology has been proposed, not only can satisfy the demand of structure for axial mechanics reinforcement, and can satisfy the demand of pipeline for crooked drag reinforcement, can also be used for the reinforcement of the section tube of some special combination structures.This method is a kind of pipeline and auxiliary equipment are carried out renovation reinforced enhancing and improved the new method of operating pressure and safety coefficient.Technology of the present invention is suitable for various pressure pipelines, pipe fitting, pressure vessel, storage tank etc. rushes to repair under the situation of stopping transportation not temporarily, or the long-term repair reinforcement, increases the service life, and improves operating pressure etc.
Technology of the present invention can not carried out renovation reinforced enhancing operation under the situation of stopping transportation at pipeline, do not need large-scale mechanical hoisting equipment in the work progress, do not need to cut pipeline, pipe fitting etc., advantages such as reinforcing effect is good, anticorrosive, ageing-resistant, applied widely are arranged.
Summary of the invention
The purpose of this invention is to provide and used fibre reinforced composites and anchor clamps and annotate the technology that curable polymer combines various pressure textures are carried out method renovation reinforced and/or enhancing; This method may further comprise the steps:
(1) need to repair, the position of reinforcement or enhancing lays one or more layers fibre reinforced composites;
(2), and between anchor clamps and pressure texture, fill curable polymer then at this fibre reinforced composites outside sectional fixture.
Term used herein " pressure texture " is included under the pressure and stores and/or the equipment of convey materials, for example pressure pipeline, pressure pipe fitting, pressure vessel, storage tank etc.Described herein " pipeline " typically refers to " pressure pipeline ", and described pipeline comprises straight pipeline and special-shaped pipeline, and the latter comprises and has the fixedly pipeline configuration of annex such as conduit saddle or reinforcement; Wherein said pipe fitting comprises pipeline mounting structure spare and annex, Yi Xing member particularly, and described pipe fitting comprises reducer union, bump joint, pipe cap and various valves etc., and the appurtenances of pipeline for example conduit saddle, reinforcement etc.In description of the invention, use comprehensive statement pipeline such as term " pipeline configuration ", " pipeline " and relative conduit fittings, when relating to reparation of the present invention, reinforcement and/or technique for enhancing scheme, described technology contents may extend to all pressure textures.
Concrete, of the present inventionly need to repair, the pressure texture of reinforcement and/or enhancing comprises pipeline, pipe fitting or pressure vessel, particularly pipeline configuration defective and that zero defect need strengthen.
Above-mentioned defective comprises volume type defective, planar defect, disperse damage type defective or geometrical defect etc.Described volume type defective mainly comprises defective such as the point, groove, sheet that corrosion causes and the pit that causes because of mechanical damage, bulging, groove, bulk deformation etc.; Described planar defect comprises that mainly stress corrosion cracking (SCC), hydrogen cause macroscopic cracking, bead crack defective or fatigue crack etc.; Described disperse damage type defective comprises that mainly tired germinating micro-crack, hydrogen blister hydrogen cause micro-crack or creep impairment micro-crack etc.; Described geometric type defective mainly comprise be in a pout, misalignment etc.Method of the present invention is particularly useful for various crack defects, comprises the renovation reinforced of girth joint crack defect and spiral weld crack defect etc. and/or enhancing.
Term used in the present invention " fibre reinforced composites " is made of adhesive and fibrous material.
Term used herein " composite " is made of with matrix mutually wild phase, wherein said composite is with through selecting, contain two or more component (or claiming constituent element) of some ratios, through manually compound, form heterogeneous, three-dimensional in conjunction with and each sharp interface, the material with property are arranged between mutually.
In described composite, be the matrix phase with the adhesive, be the composite that wild phase constitutes is called as fibre reinforced composites with the fiber.
As the adhesive of matrix phase, use conventional thermosetting resin and thermoplastic resin usually, as epoxy resin.
Above-mentioned fibre reinforced composites comprise continuous fiber reinforced composite materials and discontinuous fiber (for example whisker and chopped strand) reinforced composite, preferred continuous fiber reinforced composite materials.
The fibrous material that constitutes above-mentioned continuous fiber reinforced composite materials comprises unidirectional fibre, no latitude cloth lamination (quadrature, oblique), laminated, the multidirectional woven composite of two-dimensional fabric and fiber hybrid composite.
Above-mentioned continuous fiber includes organic fiber (as aramid fiber, polyethylene fibre), carbon fiber, basalt fibre, glass fibre, boron fibre, preferred carbon fiber, glass fibre, silicon carbide fibre, more preferably carbon fiber.
Specifically, the method for laying fibre reinforced composites in the inventive method is that wet method is pasted, and this method comprises:
(1) need to repair, the position brushing adhesive stick of reinforcement and/or enhancing;
(2) lay fiber at the position of having brushed adhesive;
Randomly repeat (1) and (2) repeatedly, be cured then, wherein the fiber of every layer of use can be identical or different.
Perhaps:
(1) adhesive is brushed on the fiber;
(2) need to repair, the position of reinforcement and/or enhancing lays the above-mentioned fiber of brushing adhesive;
Randomly repeat (1) and (2) repeatedly, be cured then, wherein the fiber of every layer of use can be identical or different.
The above-mentioned fiber of having brushed the preimpregnation adhesive comprises has brushed adhesive and completion of cure has formed the fiber of fibrous composite, and has brushed adhesive, need be heating and curing in practical operation to form the fiber of fibrous composite.
In the method for the invention, the laying of described fortifying fibre can be laid along pipeline axial, hoop is laid or laying at a certain angle, also can be any combination of several paving modes, for example wherein combination of two kinds or three kinds paving modes.
The laying position of wherein said fortifying fibre can be laid along the entire combination of pipeline, also can lay in the local combination of pipeline.
Specifically, the method of above-mentioned laying fibre reinforced composites is methods that wet method is pasted fibre reinforced composites, promptly paste above-mentioned fibre reinforced composites by the certain size and the number of plies, described fibre reinforced composites brushing described sticking impregnation, or with described sticking impregnation dipping, and make as required layers of material along pipeline radially or hoop place, can be parallel, vertical or staggered at a certain angle the laying between the adjacent two layers of material, or crisscross.
Employed curable polymer can be selected from liquid rubber, liquid silastic, cellulose derivative in the inventive method, ethene polymers and copolymer, saturated or unsaturated polyester (UP), polyacrylate, polyethers, polysulfones, aminoplast, epoxides, phenolic resins, polyaromatic, furans with and modifier; Preferred curable polymer is epoxy resin, phenolic resins, polyurethane resin, polyether resin, polyimide resin, amino resins or unsaturated polyester resin, more preferably epoxies or modified epoxy resinoid, most preferably epoxy resin.
The foregoing curable polymer mainly act as pressure-bearing and power transmission, preferably use this area curable polymer commonly used for example epoxies or modified epoxy resinoid, more preferably epoxy resin.Its elastic modelling quantity and compression strength are the bigger the better, and elastic modelling quantity is preferably greater than 1.0GPa at least greater than 0.1GPa, more preferably greater than 2.0GPa; Compression strength is preferably greater than 20MPa at least greater than 10MPa, further is preferably greater than 50MPa.
The method according to this invention, after needing to repair, laying one or more layers fibre reinforced composites on the pressure texture of reinforcement and/or enhancing and make it to solidify, at this fibre reinforced composites outside sectional fixture, and between anchor clamps and pressure texture, fill curable polymer.Wherein the step of sectional fixture and injection curable polymer can be carried out according to following method:
(1) shape of the pressure texture of reparation as required, reinforcement and/or enhancing and size are made anchor clamps, the shape of described anchor clamps and structural similarity that need be renovation reinforced, but its size should be greater than the assembly of described structure, these anchor clamps partly are made up of 2-4 usually, are provided with one or more fill orifices and one or more steam vent on these anchor clamps;
(2) each several part of described anchor clamps is enclosed within need repair, outside the structure of reinforcement and/or enhancing, its position is to make to form roughly space uniformly between described anchor clamps and the structure member;
(3) with connecting with welding or bolted form between each part of described anchor clamps, make it to become an anchor clamps integral body;
(4) with the end of described anchor clamps and need between the renovation reinforced pipeline configuration with welding or with the mode of encapsulant sealing, or the mode of its any combination closely connects;
(5) fill orifice by reserving on described anchor clamps pours into curable polymer to anchor clamps and in the space that needs to form between the renovation reinforced structure; With
(6) make the polymer cure of being poured into.
Concrete, the step of sectional fixture and injection curable polymer is carried out according to following method in the inventive method:
(1) shape of the pipeline of reparation as required, reinforcement or enhancing, pipe fitting or pressure vessel and size are made anchor clamps, the shape of described anchor clamps is similar to pipeline, pipe fitting or pressure vessel that need be renovation reinforced, but its size is greater than the assembly of described pipeline, pipe fitting or pressure vessel, these anchor clamps partly are made up of 2-4 usually, are provided with one or more fill orifices and one or more steam vent on these anchor clamps;
(2) each several part of described anchor clamps is enclosed within need repair, outside pipeline, pipe fitting or the pressure vessel of reinforcement and/or enhancing;
(3) form with welding or bolt between each part of described anchor clamps is closely connected, make it to become an anchor clamps integral body, preferably connect with Type of Welding, 45 degree grooves are preferably opened in its welding position;
(4) with the outer of described anchor clamps and need between the renovation reinforced structure with welding, bolt and the mode by one of encapsulant, or the mode of its any combination closely connects, and preferably makes it closely to connect and shutoff by welding and/or encapsulant; Make described anchor clamps and need to repair, the relative position between the member of pipeline, pipe fitting or the pressure vessel of reinforcement or enhancing is to form roughly space uniformly between described anchor clamps and the structure member;
(5) fill orifice by reserving on described anchor clamps pours into curable polymer to anchor clamps and in the space that needs to form between the renovation reinforced pipeline configuration;
(6) make the polymer cure of being poured into, described anchor clamps and the resin that passes through to solidify through the renovation reinforced pipeline configuration of fibre reinforced composites form an integral body, thereby have finished the renovation reinforced of this structure and/or enhancing.
Wherein said anchor clamps are made up of many parts, and preferred 2-4 partly forms, and more preferably is made up of 2 parts.Described anchor clamps and needing between the preferred 0.2-50 millimeter of spacing between renovation reinforced pipeline, pipe fitting or the pressure vessel, more preferably 1-10 millimeter.
On above-mentioned anchor clamps, be provided with one or more, preferred 1-3 fill orifice, and one or more, preferably 1-3 steam vent.The hole of opening in advance can be in the optional position of anchor clamps, the position that preferably is in symmetry or approaches symmetry.Can adorn filling nozzle and exhaust nozzle respectively on the hole.
In addition, also have one or more holes at the correct position of anchor clamps, be used to control the spacing between the renovation reinforced pipeline of needs, pipe fitting or pressure vessel and the anchor clamps, this spacing is generally 0.2-50mm, preferred 1-10mm.
In addition, one or more holes also can be set as indicator hole, be used to observe the perfusion progress of curable polymer at the correct position of described anchor clamps.
Fibre reinforced composites of the present invention can be applicable to all pressure textures with the renovation reinforced and/or enhancing technology that anchor clamps notes curable polymer combines, comprise pressure pipeline, pressure pipe fitting, pressure vessel, storage tank etc., be specially adapted to the renovation reinforced of pressure pipeline and/or enhancing.For not having defective or pipeline, pipe fitting or the pressure vessel of various defectives being arranged, fibre reinforced composites can strengthen the intensity of body or pressure vessel well, and have crack arrest effect widely for various crackles, make the anti-interior pressure energy power of pipeline, pipe fitting or pressure vessel improve greatly; And outer anchor clamps of filling curable polymer can improve the opposing external pressure and the crooked ability of opposing of pipeline, pipe fitting or pressure vessel greatly.
More specifically, the invention provides a kind of fibre reinforced composites that are used for pipeline configuration and annotate the renovation reinforced and enhancing technology that curable polymer combines with anchor clamps, this method may further comprise the steps:
(1) outside the renovation reinforced pipeline configuration of needs, lays one or more layers composite strengthening course;
(2) make anchor clamps according to the shape and the size of this pipeline configuration, the shape of described anchor clamps is similar to pipeline configuration that need be renovation reinforced, but its size dimension is greater than described pipeline configuration or its assembly, and these anchor clamps are made up of many parts usually, is provided with two or more holes at the correct position of these anchor clamps;
(3) each several part with anchor clamps is enclosed within outside the renovation reinforced pipeline configuration of needs;
(4) with closely connecting between each part of described anchor clamps, form an anchor clamps integral body;
(5) with shutoff between the outer of described anchor clamps and this pipeline configuration;
(6) fill orifice by reserving on described anchor clamps pours into curable resin to anchor clamps and in the annular space space that needs to form between the renovation reinforced pipeline configuration; With
(7) resin solidification that is poured into makes anchor clamps and need carry out renovation reinforced pipeline configuration integral body of resin formation by solidifying.
According to above-mentioned method, described composite can be carbon fibre composite, glass fiber compound material, basalt fibre, aramid fiber composite material, preferred carbon fibre composite and glass fiber compound material, preferred again carbon fibre composite.
The fortifying fibre of described composite can be laid along pipeline axial, and also can lay by hoop, or lay at a certain angle, also can be any combination of several paving modes, preferably lay along pipeline axial.Wherein said anchor clamps are made up of many parts, and preferred 2-4 partly forms, and more preferably 2 parts are formed.Wherein said anchor clamps and needing between the preferred 0.2-50 millimeter of spacing between the renovation reinforced pipeline configuration, more preferably 1-10 millimeter.
Form with welding or bolt between the each several part of above-mentioned composition anchor clamps closely connects, and forms the integral body of anchor clamps.
Above-mentioned anchor clamps and needing between the renovation reinforced pipeline configuration by welding, bolt or with the mode of encapsulant, or any combination of several modes, connect and shutoff, form void space, preferably by the form of welding with the mode of encapsulant.
Above-mentioned encapsulant comprises rubber, silica gel, curable resin, clay and stiffener or any combination of different materials, preferably curable resin and stiffener with good seal performance.
Two or more holes are arranged on anchor clamps, preferred 2-10 hole, more preferably 2-6 hole is as fill orifice and steam vent.The hole of opening in advance can be in the optional position of anchor clamps, preferably is in relatively or approaches relative position.Can adorn filling nozzle and exhaust nozzle respectively on the hole.
Above-mentioned curable resin comprises epoxy resin, phenolic resins, polyurethane resin, polyether resin, polyimide resin, amino resins, unsaturated polyester resin, preferred epoxy.
Correct position at described anchor clamps also has one or more holes, is used to control renovation reinforced special-shaped pipeline configuration of needs and the spacing between the anchor clamps, and/or as indicator hole, is used to observe the perfusion progress of resin.
More specifically, in the inventive method, the operation of one or more layers composite of step 1 laying is as follows:
1. at first metallic conduit is carried out removing surface;
2. the defective on metallic conduit surface is repaired: with the steel tube surface position of caving in, for example usefulness is filled and led up resin and is filled and led up near honeycomb, pitted skin, aperture, the weld seam etc., repairs to surfacing;
3. wet method is pasted fiber cloth: paste fiber cloth by the certain size and the number of plies, paste carbon fiber plate by the certain size and the number of plies, described fiber cloth brushing described sticking impregnation, or with described sticking impregnation dipping, and make as required each carbon fibre cloth layer along pipeline radially or hoop place, adjacent two-layer fiber cloth can be parallel, vertical or staggered at a certain angle the laying.Or it is crisscross.
In the inventive method, above-mentioned steps 2 is that the shape and the size of renovation reinforced as required metallic conduit structure made anchor clamps, described anchor clamps are that shape is similar to pipeline configuration that need be renovation reinforced, but its size dimension is greater than the assembly of described pipeline configuration and/or section tube.Wherein said anchor clamps are normally made by metal material, and preferably the material with the renovation reinforced special-shaped pipeline configuration of needs is identical.For the ease of assembling, these anchor clamps are made up of many parts usually, preferably partly are made up of 2-4, and preferred again 2 parts are formed.
In the inventive method, above-mentioned steps 3 is 2-4 that will constitute anchor clamps, preferred 2 assemblies are enclosed within to be needed on the renovation reinforced pipeline configuration, and should make described anchor clamps as far as possible and need between the renovation reinforced special-shaped pipeline configuration relative position well-balanced, promptly all there is similar distance optional position between the two, so that the resin bed that solidifies has homogeneous thickness as far as possible, one or more holes can be set at the correct position of described anchor clamps, be used to control the spacing between the renovation reinforced special-shaped pipeline configuration of anchor clamps and needs, described spacing usually between the 0.2-50 millimeter, preferred 1-10 millimeter.The number in above-mentioned hole and the setting of position are well-known to those skilled in the art.
In the inventive method, above-mentioned steps 4 is that the form with welding or bolt between each part of described composition anchor clamps is closely connected, and forms anchor clamps integral body.Most preferably anchor clamps are made up of two parts, by being welded to connect, make it form an integral body between two parts.
In the inventive method, above-mentioned steps 5 is by welding, bolt or with modes such as encapsulants, or in the mode of their any combinations with shutoff between the outer of described anchor clamps and this pipeline configuration and/or the section tube; The preferred employing carried out shutoff by encapsulant and/or with welding manner.Described encapsulant does not have leakage when wanting to guarantee the next step infusion epoxy resin.Described encapsulant is selected from rubber, silica gel, epoxy resin, clay and stiffener with good seal performance and other steel constructions etc., can adopt wherein any one or wherein any two kinds or multiple combination.
In the inventive method, in the above-mentioned steps 4 and 5, as described between the each several part of composition anchor clamps, and described anchor clamps and need to be welded to connect between the renovation reinforced pipeline configuration, 45 degree grooves are preferably opened in its welding position.
In the inventive method, above-mentioned steps 6 and 7 is fill orifices of reserving by on described anchor clamps, perfusion resin to anchor clamps and in the space that needs to form between renovation reinforced pipeline configuration and/or the section tube; Make the resin solidification that is poured into.Resin wherein comprises epoxy resin, phenolic resins, polyurethane resin, polyether resin, polyimide resin, amino resins, unsaturated polyester resin, preferred epoxy.Anchor clamps form an integral body with carrying out renovation reinforced pipeline configuration by the resin that solidifies, and have finished the renovation reinforced of this structure.
For perfusion resin, anchor clamps of the present invention are provided with one or more fill orifices, and one or more steam vents are arranged, for example one or two fill orifices and one or two steam vents.The position of opening of fill orifice should be at about 30 millimeters places from the weld seam center, should not perforate on pipe welding seam and edge thereof.The amount of the resin that needs pour into and the hardening time of resin are depended in the setting of fill orifice and steam vent number, and promptly Guan Zhu speed must guarantee can finish in the operating time at resin the perfusion of required amount of resin.
For ease of the perfusion operation, can filling nozzle and exhaust nozzle be installed on fill orifice and steam vent, described filling nozzle and exhaust nozzle normally are installed on fill orifice and the steam vent by being threaded into.Described filling nozzle and exhaust nozzle can be that simple, its diameter is suitable for the straight tube that is connected with charge pump or has the straight tube of ripple mouth, the preferred high pressure Water slop injector that to have bought on the market that uses, this syringe needle utilization ring compresses solid principle, be provided with unidirectional stop valve at its head, can prevent that slurries from falling to spray under high pressure is pushed.After finishing the perfusion operation and confirming that resin has cured, excision filling nozzle and exhaust nozzle can be with screw with each fill orifice and steam vent sealings when needing.
When perfusion resin, should make fill orifice be in the bottom usually, make steam vent be in the top.In case find that steam vent has resin to overflow, illustrate and filled with resin in the space.After treating resin solidification, excision filling nozzle and exhaust nozzle can be with screw with each fill orifice and steam vent sealings when needing.
For better controlling pouring quality, also one or more holes can be set at the correct position of these anchor clamps, as indicator hole, be used to observe the perfusion progress.The selection principle that the position is set is well-known to those skilled in the art.
Used resin can be any resin that can buy on the market in the said method of the present invention, the preferred employed resin that can satisfy following table 3 performance indications.
Table 3 curable resin mechanical property requirements scope
| Mechanical property | Scope | Optimize | More optimize |
| Compressive strength | ＞10MPa | ＞20MPa | ＞50MPa |
| Interface shear strength | ＞2MPa | ＞10MPa | ＞20MPa |
| Interface tensile strength | ＞2MPa | ＞5MPa | ＞10MPa |
| Young's modulus | ＞0.1GPa | ＞1.0GPa | ＞2.0GPa |
Renovation reinforced and/or enhancing technology that fibre reinforced composites mentioned above combine with anchor clamps notes curable polymer and using method thereof and application are mainly carried out at the pipeline construction scene, and part technology also can be carried out in job shop.In implementing pipeline rehabilitation reinforcement engineering project, preferably carry out in various degree prefabricated, as the retrofit of anchor clamps is carried out on-the-spot then the installation in job shop according to the needs of engineering; Also can finish and after the assay was approved, transport the scene in that the member each several part is prefabricated respectively, all carry out retrofit at the scene, and then install, welding.
When implementing the inventive method, before laying fibre reinforced composites, can handle pipeline, pipe fitting or Surface Pressure Vessel as required, as the surface is cleared up; Defective to the surface is repaired: with the steel tube surface position of caving in, for example fill and lead up resin and fill and lead up polishing near honeycomb, pitted skin, aperture, the weld seam etc. and using, repair to surfacing etc.Above-mentioned surface treatment step can improve interface binding power as polishing, metallic conduit rust cleaning, passivation etc.In addition, also can fill and lead up material in the utilization of the surface of pipeline, pipe fitting or pressure vessel as required processing is filled and led up at the air spots place, wherein fill and lead up material, can be the common resin of filling and leading up on the market, as JH-levelling glue, perhaps other elastic modelling quantity be near the material of body, as BELZONA1221, its elastic modelling quantity is higher, and near the elastic modelling quantity of common iron, the preferred elastomeric modulus is near the material of filling and leading up of body material.It is commonly used that to fill and lead up resin be epoxy resin, phenolic resins, polyurethane resin, polyether resin, polyimide resin, amino resins, unsaturated polyester resin or they and the mixture of certain mechanics enhancing granular materials.It is preferred that described to fill and lead up resin be epoxy resin or itself and the mixture of mechanics enhancing granular materials.It is that the conventional mechanics that uses in this area strengthens the filler particles material that wherein said mechanics strengthens granular materials, as sand, stone etc.
The invention provides and be used for pipeline, pipe fitting or pressure vessel are carried out renovation reinforced and improve the technology of operating pressure, this technology has adopted composite to strengthen the renovation reinforced enhancing technology that anchor clamps are annotated curable polymers.Renovation reinforced enhancing technology of the present invention is applicable to that various pipelines and auxiliary equipment thereof rush to repair temporarily under the situation of stopping transportation not, or the long-term repair reinforcement, increases the service life, and improves Safety Operation Pressure etc.Wherein the material of pipeline comprises various metallic conduits and nonmetal pipeline (not using above-mentioned relevant solder technology for nonmetallic materials), renovation reinforced and the raising operating pressure of for example large-scale oil transportation, gas pipeline and auxiliary equipment thereof, wherein said pipeline and auxiliary equipment thereof are meant the standard and the non-standard pipeline of various different bores; Various pipe fittings comprise standard and off-gauge elbow, threeway, four-way, reducing joint, pipe cap and bump joint etc.; Abnormally-structured in the pipeline, for example relatively more complicated structure, valve and the possible combination of above-mentioned various structure such as conduit saddle, reinforcement.
The method that the present invention is used for the renovation reinforced of pipeline, pipe fitting or pressure vessel and/or strengthens, with known the improving of prior art with composite enhancing and anchor clamps notes resin technology, and organically combine, overcome exist when independent use composite strengthens be difficult to be applied to the problem of abnormally-structured and counter-bending ability reinforcement deficiency and use anchor clamps to annotate resin technology separately the time the problem that exists along pipeline axial drag reinforcing effect deficiency.
Technology of the present invention can not carried out the present invention under the situation of stopping transportation at pipeline and used composite and strengthen the reinforcement operation that anchor clamps are annotated resin technology, advantage anticorrosive, ageing-resistant, that reinforcing effect is good that this reinforcement operation not only has, and can improve operating pressure simultaneously, applied widely.
Description of drawings
Fig. 1 is pipeline and a defective schematic diagram thereof in one embodiment of this invention (embodiment 1), and wherein 1 for needing the reinforcement pipeline; 2 is the mechanical damage defective.
Fig. 2 is that carbon fibre composite is strengthened and the clamp for machining schematic diagram in the embodiment of the invention 1.In order to improve the tensile strength after the reinforcement, at first increase the carbon fibre composite layer.Wherein 1 for needing the reinforcement pipeline; 2 is the mechanical damage defective, the 3rd, and the carbon fibre composite enhancement layer, 4 and 5 is respectively two parts of anchor clamps; The 6th, fill orifice; The 7th, steam vent.
Fig. 3 is an anchor clamps overall schematic in the embodiment of the invention 1.Wherein 8 be anchor clamps whole with need reinforcement pipeline between encapsulant.
Fig. 4 is the schematic diagram of infusion epoxy resin in the embodiment of the invention 1, when the arrow 9 among the figure is meant infusion epoxy resin, and the flow direction of epoxy resin.
Fig. 5 is an anchor clamps processing schematic diagram in the another embodiment of the present invention (embodiment 2), and this technical scheme is carried out reinforcement at cross conduit saddle peripheral part of pipeline, and wherein 1 for needing the reinforcement pipeline; 4 and 5 is respectively two parts of anchor clamps; The 6th, fill orifice; And 7 are steam vents; 10 and 11 is at the gap part of cross tee filler ring to steel plate processing on the anchor clamps; 12 and 13 is the gap parts of processing at the axial steel plate of cross conduit saddle on the anchor clamps; The 14th, the cross conduit saddle along pipe ring to steel plate; And 15 are steel plates along pipeline axial of cross conduit saddle.
Fig. 6 is that fibrous composite is strengthened schematic diagram in the embodiment of the invention 2, and this technical scheme at first increases the fibrous composite layer in order to improve the tensile strength after the reinforcement.Wherein 1 for needing the reinforcement pipeline; The 3rd, the fibrous composite enhancement layer; 4 and 5 is respectively two parts of anchor clamps; The 6th, fill orifice; And 7 are steam vents; 10 and 11 is at the gap part of cross tee filler ring to steel plate processing on the anchor clamps; 12 and 13 is the gap parts of processing at the axial steel plate of cross conduit saddle on the anchor clamps; The 14th, the cross conduit saddle along pipe ring to steel plate; And 15 are steel plates along pipeline axial of cross conduit saddle.
Fig. 7 is the schematic diagram of infusion epoxy resin in the embodiment of the invention 2, and wherein 1 for needing the reinforcement pipeline; The 6th, fill orifice; The 7th, steam vent; The 8th, encapsulant; When the arrow 9 among the figure is meant infusion epoxy resin, the flow direction of epoxy resin.
Fig. 8 is a design sketch after the reinforcement of cross conduit saddle in the embodiment of the invention 2.
Fig. 9 is the schematic diagram of strengthening of welded seam in the embodiment of the invention 3, and wherein 1 for needing the reinforcement pipeline, the 16th, and girth joint, 4 and 5 is respectively two parts of anchor clamps, the 6th, fill orifice, and 7 are steam vents.
Figure 10 be in the embodiment of the invention 3 in the strengthening of welded seam step fibrous composite strengthen schematic diagram.In order to improve the tensile strength after the reinforcement, at first increase the fibrous composite layer.Wherein 1 for needing the reinforcement pipeline; The 3rd, the fibrous composite enhancement layer.
Figure 11 is a design sketch after the strengthening of welded seam in the embodiment of the invention 3.
Figure 12 is the schematic diagram of threeway in the embodiment of the invention 4.
Figure 13 is the schematic diagram of threeway reinforcement anchor clamps in the embodiment of the invention 4.
Figure 14 is the schematic diagram that fibrous composite is strengthened in the threeway reinforcement step in the embodiment of the invention 4.
Figure 15 is a design sketch after the threeway reinforcement in the embodiment of the invention 4.
The specific embodiment
In order further to set forth related material of present technique and construction technology, provided following embodiment.But, the scope that these embodiment do not limit the present invention in any way.
The experimental selection pipe diameter is Φ 720mm, wall thickness 9mm, and material is Q235b.The mechanical damage that a long 40mm, wide 10mm, dark 4.5mm are arranged on the pipeline.As Fig. 1.Utilizing composite of the present invention to strengthen anchor clamps notes curable polymer technology carries out renovation reinforced to this pipeline.
Experiment is carried out as follows:
1, carbon fibre composite is strengthened
At first metallic conduit (1) is carried out removing surface;
Defective to the metallic conduit surface is repaired: steel tube surface mechanical damage defective (2) is filled and led up with filling and leading up resin, repaired to surfacing;
The wet method affixing carbon fabric: wide by long 200mm is 2170mm, along 1 layer on pipeline axial stickup carbon fiber, and wherein said carbon cloth brushing or flooded sticking impregnation of the present invention.
After 24 hours, carbon fibre composite (3) curing reaches intensity, carries out next step operation.
2, make anchor clamps
According to the structure and the shape of the pipeline person in charge and mechanical damage defective, process special anchor clamps.It forms (see accompanying drawing 24 and 5) by two parts.Being about to diameter is Φ 760mm, and wall thickness 9mm is that the pipe cutting for 400mm identical material Q235b, long forms two semicircles dividing equally with pipeline, forms through meticulous machineds of method such as cutting, angle mills.All need welding portions processing 45 degree grooves except that circular cross-section with 4 and 5 then, and dirts such as the oil of groove and surfaces externally and internally thereof, lacquer, rust, burr are cleared up;
On 4 and 5, opening fill orifice 6 and steam vent 7 respectively.Mantle fiber on each hole is so that install filling nozzle and exhaust nozzle.
3, the winding of anchor clamps and installation
Two parts 4 and 5 of anchor clamps are enclosed within respectively are responsible for 1 both sides, see accompanying drawing 2.
Between 4 and 5, closely connect, form an annular space, note making the distance between the person in charge and the anchor clamps well-balanced as much as possible with the form of welding.
4, the shutoff of annular space
Utilize the SK-110 of Hunan Shenli Industrial Co., Ltd. to parch bright epoxy glue 8 (encapsulant, sclerosis in 5-10 minute soon; Shear strength 〉=8MPa), the edge of the annular space that forms between the shutoff anchor clamps and the person in charge forms the annular space that seals.
5, infusion epoxy resin
On the fill orifice of described anchor clamps and steam vent, filling nozzle and exhaust nozzle are installed respectively.Make fill orifice be in the below, make steam vent be in the top, adopt manual pump by fill orifice 6 infusion epoxy resin (seeing accompanying drawing 4) in annular space, the JX-1 epoxy resin (compression strength: 54.3MPa that described epoxy resin provides for China Irrigation Works and Hydroelectric Foundation Engineering Bureau; Bonding strength: 3.5N/mm2; Pressure-proof elasticity modulus: 2.6Gpa; Viscosity: 9.8mPa.s; Operating time: 90 minutes).Overflow epoxy resin until the steam vent 7 that is arranged in the top, stop perfusion.
After 24 hours, epoxy resin solidifies fully.Excision grout nipple and exhaust nozzle are with described each hole of screw sealing.A whole set of reinforcement measure begins and the synchronous load of body.(see accompanying drawing 3.)
Do explosion bulge test according to SY-T5992-94 " conveying steel pipe hydrostatic pressing explosion bulge test method ", do not have defective not renovation reinforced place explosion at pipeline after reaching 18MPa, and fault location is because reinforcement measure is excellent.Show the enforcement of this reinforcement technology, reached renovation reinforced effect.
Experimental selection pipeline (1) diameter is Φ 720mm, wall thickness 9mm, and material is Q235b.Fixedly conduit saddle (solder type axial thrust conduit saddle) of the long cross of a 600mm is arranged under the pipeline.This pipeline design pressure on engineering is 4.3MPa, utilizes composite of the present invention to strengthen anchor clamps notes curable polymer technology this pipeline is carried out reinforcement, improves pressure.
Experiment is carried out as follows:
1, carbon fibre composite is strengthened
At first metallic conduit is carried out removing surface;
Defective to the metallic conduit surface is repaired: with the steel tube surface position of caving in, for example fill and lead up with repair sheets near honeycomb, pitted skin, aperture, the weld seam etc., repair to surfacing;
The wet method affixing carbon fabric: wide by long 1000mm is 2170mm, along pipeline axial stickup 1 layer of carbon fiber (3), and wherein said carbon cloth brushing or flooded sticking impregnation.
After 24 hours, carbon fibre composite curing reaches intensity, carries out next step operation.
2, make anchor clamps
According to the structure and the shape of pipeline and conduit saddle, process special anchor clamps.It forms (see accompanying drawing 54 and 5) by two parts.With diameter is Φ 760mm, wall thickness 9mm, with pipeline is that the pipe cutting for 1m identical material Q235b, long forms two semicircles dividing equally, and cut out shape thereon respectively and size (is seen 10 of accompanying drawing 5 with the corresponding gap of conduit saddle cross conduit saddle steel plate (14), 11) and with the corresponding gap of cross conduit saddle steel plate (15) (see 12 of accompanying drawing 5,13), form through meticulous machineds of method such as lancing, angle mills.All need separately 45 degree grooves of weld parts except that circular cross-section with anchor clamps (4) and (5) then, and dirts such as the oil of groove and surfaces externally and internally thereof, lacquer, rust, burr are cleared up;
On (4) and (5), opening fill orifice (6) and steam vent (7) respectively.Mantle fiber on each hole is so that install filling nozzle and exhaust nozzle.
3, the winding of anchor clamps and installation
The both sides that two parts (4) and (5) of anchor clamps are enclosed within the person in charge respectively.Make the steel plate (14) of cross conduit saddle just in time embed gap (10) and (11) lining, steel plate (15) then just in time snaps in gap (12) and (13) lining.
With between (4) and (5) and with anchor clamps and conduit saddle steel plate (14) and (15) between closely be connected with the form of welding, forms an annular space, note making the distance between the person in charge and the anchor clamps well-balanced as much as possible, the outward appearance after the assembling is referring to accompanying drawing 7.
4, the shutoff of annular space.
(SK-110 of Hunan Shenli Industrial Co., Ltd. parches bright epoxy glue soon, sclerosis in 5-10 minute to utilize encapsulant (8); Shear strength 〉=8MPa), the edge of the annular space that forms between the shutoff anchor clamps and the person in charge forms the annular space that seals.
5, perfusion epoxy
On the fill orifice of described anchor clamps and steam vent, filling nozzle and exhaust nozzle are installed respectively.Make fill orifice be in the below, make steam vent be in the top, adopt manual pump by fill orifice (6) infusion epoxy resin in annular space, the JX-1 epoxy resin (compression strength: 54.3MPa that described epoxy resin provides for China Irrigation Works and Hydroelectric Foundation Engineering Bureau; Bonding strength: 3.5N/mm2; Pressure-proof elasticity modulus: 2.6Gpa; Viscosity: 9.8mPa.s; Operating time: 90 minutes).Overflow epoxy resin until the steam vent (7) that is arranged in the top, stop perfusion.
After 24 hours, epoxy resin solidifies fully.Excision grout nipple and exhaust nozzle are with described each hole of screw sealing.A whole set of reinforcement measure begins and the synchronous load of body.(see accompanying drawing 8.)
According to SY-T5992-94 " conveying steel pipe hydrostatic pressing explosion bulge test method ", do explosion bulge test, reach behind the 19.2MPa in not reinforcement place explosion of pipeline, and cross conduit saddle place is because reinforcement measure is excellent.Show the enforcement of this reinforcement technology, reached renovation reinforced effect.
The experimental selection pipe diameter is Φ 325mm, wall thickness 7mm, and material is Q235b.In the middle of the pipeline is girth joint, the long 400mm of anchor clamps (seeing accompanying drawing 9).
Experiment is carried out as follows:
1, carbon fibre composite is strengthened
At first metallic conduit is carried out removing surface;
Near weld seam, fill and lead up, repair to surfacing with repair sheets;
Wet method affixing carbon fabric (seeing accompanying drawing 10).
Carbon fibre composite curing reaches intensity, carries out next step operation.
2, make anchor clamps
Similar to Example 1, according to pipeline configuration and shape, clamp for machining (seeing accompanying drawing 9).
3, the winding of anchor clamps and installation (referring to embodiment 1)
4, the shutoff of annular space.
(SK-110 of Hunan Shenli Industrial Co., Ltd. parches bright epoxy glue soon, sclerosis in 5-10 minute to utilize encapsulant (8); Shear strength 〉=8MPa), the edge of the annular space that forms between the shutoff anchor clamps and the person in charge forms the annular space that seals.
5, perfusion curable polymer
The curable liquid silastic of perfusion in above-mentioned annular space, after silicon rubber solidified, a whole set of reinforcement measure began and the synchronous load of body.(seeing accompanying drawing 11).
The experimental selection pipe diameter is Φ 60mm, wall thickness 4mm, and material is PVC.Damage is arranged in the middle of the pipeline.Utilizing composite of the present invention to strengthen anchor clamps notes curable polymer technology carries out renovation reinforced to this pipeline.Concrete grammar is similar to embodiment 1.
The experimental selection pipeline is Φ 325mm, wall thickness 7mm, and material is Q235b, experiment is equal tee (seeing accompanying drawing 12) with threeway.Utilizing composite of the present invention to strengthen anchor clamps notes curable polymer technology carries out renovation reinforced to this three-port structure.The concrete operations step is similar to Example 1, and accompanying drawing 12-15 understands the reinforcement of threeway specifically.The concrete operations step is summarized as follows;
1, according to the structure and the shape of this threeway, designs clamp for machining (seeing accompanying drawing 13).It is made up of two parts of complete equity, opens a fill orifice and a steam vent in position;
2, at first twine glass fibre composite bed (seeing accompanying drawing 14).
3,, two parts of anchor clamps are wrapped in the threeway outside that needs reinforcement, and two parts scene of anchor clamps is welded together as wrapping;
4, with the edge and the encapsulant shutoff of the space between the threeway of anchor clamps, in the process of encapsulant shutoff, note making the distance between anchor clamps and each position of threeway even as far as possible.
5, mantle fiber on each hole is so that install filling nozzle and exhaust nozzle.Make fill orifice be in the below then, make steam vent be in the top, pour into phenolic resins in the space of adopting manual pump between anchor clamps and threeway, to form by fill orifice.Overflow phenolic resins until the steam vent that is arranged in the top, stop perfusion.After phenolic resins solidified fully, excision grout nipple and exhaust nozzle sealed described each hole with screw, thereby had finished reinforcement and pressure-raising (seeing accompanying drawing 15) to described threeway.
It is the production technology of a practicality that composite provided by the invention strengthens anchor clamps notes renovation reinforced technology of curable polymer and using method and application thereof, can be used for various pipelines, gas transmission petroleum pipeline for example, particularly described pipeline and its auxiliary equipment renovation reinforced and improve operating pressure, be large-scale pipeline renovation reinforced in indispensable practical technique.
Below described embodiment of the present invention in detail, can do a lot of improvement and variation obviously for a person skilled in the art and can not deviate from essence spirit of the present invention.All these changes and improvements are all within protection scope of the present invention.
Claims (10)
- One kind to pressure texture repair, the method for reinforcement and/or enhancing, this method may further comprise the steps:(1) need to repair, the position of reinforcement and/or enhancing lays one or more layers fibre reinforced composites; With(2) sectional fixture outside these fibre reinforced composites, and pour into curable polymer in the space that between anchor clamps and this pressure texture, forms.
- 2. in accordance with the method for claim 1, wherein said pressure texture is to store under pressure and/or the equipment of convey materials, comprises pressure pipeline, pipe fitting or pressure vessel.
- 3. in accordance with the method for claim 1, wherein said fibre reinforced composites are continuous fiber reinforced composite materials; Described continuous fiber is selected from no latitude cloth lamination, laminated, the multidirectional braided material of two-dimensional fabric and the assorted fibre material of unidirectional fibre, quadrature or oblique; Described fiber can be selected from organic fiber, carbon fiber, glass fibre, basalt fibre, boron fibre, silicon carbide fibre, alumina fibre and the ceramic fibre of aramid fiber or polyethylene fibre; Preferred fiber is carbon fiber, glass fibre or basalt fibre.
- 4. according to any described method of claim 1-3, the method for wherein said laying fibre reinforced composites comprises:(1) need to repair, the position brushing adhesive stick of reinforcement and/or enhancing;(2) lay fiber at the position of having brushed adhesive;Randomly repeat (1) and (2) repeatedly, be cured then, wherein the fiber of every layer of use can be identical or different;Perhaps,The method of wherein said laying fibre reinforced composites comprises:(1) adhesive is brushed on the fiber;(2) need to repair, the position of reinforcement and/or enhancing lays the above-mentioned fiber of brushing adhesive;Randomly repeat (1) and (2) repeatedly, be cured then, wherein the fiber of every layer of use can be identical or different.
- 5. can lay along pipeline axial when wherein said fibre reinforced composites are used for pipeline in accordance with the method for claim 4,, hoop is laid or lay at a certain angle, also can be any combination of several paving modes; Preferably lay along pipeline axial, laying position wherein can be laid along the entire combination of pipeline, also can lay in the local combination of pipeline.
- 6. in accordance with the method for claim 1, step 2 is wherein carried out according to following method:(1) shape of the pressure texture of reparation as required, reinforcement and/or enhancing and size are made anchor clamps, the shape of described anchor clamps pressure texture renovation reinforced to needs and/or that strengthen is similar, but its size is greater than described structure, these anchor clamps partly are made up of 2-4 usually, are provided with one or more fill orifices and one or more steam vent on these anchor clamps;(2) each several part of described anchor clamps is enclosed within need repair, outside the structure of reinforcement and/or enhancing;(3) with connecting with welding or bolted form between each part of described anchor clamps, make it to become an anchor clamps integral body;(4) with the end of described anchor clamps and need between the renovation reinforced pipeline configuration with welding or with the mode of encapsulant sealing, or the mode of its any combination closely connects;(5) fill orifice by reserving on described anchor clamps pours into curable polymer to anchor clamps and in the space that needs to form between the renovation reinforced structure; With(6) make the polymer cure of being poured into.
- 7. in accordance with the method for claim 6, wherein said encapsulant comprises rubber, silica gel, curable resin, clay, stiffener or the asbestos cord with good seal performance, or wherein any combination of at least two kinds of materials; Preferred encapsulant is a curable resin, more preferably epoxy resin.
- 8. in accordance with the method for claim 6, wherein the correct position at described anchor clamps also has one or more holes, by means of described hole with bolt control anchor clamps and need to repair, spacing between the structure of reinforcement and/or enhancing; Described anchor clamps and needing are repaired, the spacing between the structure of reinforcement and/or enhancing is the 0.2-50 millimeter; Preferred 1-10 millimeter.
- 9. in accordance with the method for claim 6, wherein said curable polymer be selected from liquid rubber, liquid silastic, cellulose derivative, ethene polymers or its copolymer, saturated or unsaturated polyester (UP), polyacrylate, polyethers, polysulfones, aminoplast, epoxy resin, phenolic resins, polyaromatic, furans with and modifier; Preferred curable polymer is epoxy resin, phenolic resins, polyurethane resin, polyether resin, polyimide resin, amino resins, unsaturated polyester resin or its modifier; Preferred curable polymer is epoxy resin or modified epoxy; The elastic modelling quantity of wherein said curable polymer is greater than 0.1Gpa; Compression strength is greater than 10Mpa; The elastic modelling quantity of preferred curable polymer is greater than 1GPa; Compression strength is greater than 20Mpa; More preferably the elastic modelling quantity of described curable polymer is greater than 2Gpa; Compression strength is greater than 50MPa.
- 10. any described pressure texture fibre reinforced composites of claim 1-9 and anchor clamps are annotated renovation reinforced and/or enhancing technology that curable polymer combines in the application aspect pipeline rehabilitation reinforcement and/or the enhancing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100627198A CN101204770B (en) | 2007-01-15 | 2007-01-15 | Pressure structure clamp and fiber compound material combined reinforcement technology |
| PCT/CN2008/000100 WO2008086738A1 (en) | 2007-01-15 | 2008-01-15 | Enhancing technique for a pressure mechanism by combining pouring the curable polymer under the help of a clamp with a fiber-reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100627198A CN101204770B (en) | 2007-01-15 | 2007-01-15 | Pressure structure clamp and fiber compound material combined reinforcement technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101204770A true CN101204770A (en) | 2008-06-25 |
| CN101204770B CN101204770B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100627198A Expired - Fee Related CN101204770B (en) | 2007-01-15 | 2007-01-15 | Pressure structure clamp and fiber compound material combined reinforcement technology |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101204770B (en) |
| WO (1) | WO2008086738A1 (en) |
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| CN101204770B (en) | 2011-07-27 |
| WO2008086738A1 (en) | 2008-07-24 |
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