CN101245885A - Mend filling and renovation reinforced method for bearing equipment wall surface - Google Patents
Mend filling and renovation reinforced method for bearing equipment wall surface Download PDFInfo
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- CN101245885A CN101245885A CNA2007100802197A CN200710080219A CN101245885A CN 101245885 A CN101245885 A CN 101245885A CN A2007100802197 A CNA2007100802197 A CN A2007100802197A CN 200710080219 A CN200710080219 A CN 200710080219A CN 101245885 A CN101245885 A CN 101245885A
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Abstract
The invention relates to a method used for repairing and reinforcing a wall surface of bearing equipment, in particular to a patching and material filling repairing and reinforcing method and the application of the wall surfaces of a pipeline, a pipe and a pressure vessel. The repairing and reinforcing method of the invention comprises welding patches at the positions to be repaired and reinforced on the wall surfaces of the bearing equipment, filling a filler between the patch and the wall surface, thus achieving the repairing and reinforcing operation at the positions. The repairing and reinforcing method used for the wall surfaces of the bearing equipment is suitable for temporary rush repair or long-term repairing reinforcement of various conveying pipelines, pressure vessels and subsidiary facilities, can prolong the service life of the bearing equipment and improves safety operation pressure.
Description
Invention field
The present invention relates to the method for repairing and reinforcing and the application thereof of bearing equipment wall surface, particularly, the present invention relates to filling and renovation reinforced method and application thereof are annotated in the patch installing of various pipelines, pipe fitting, pressurized container and affiliated facility thereof.
Technical background
The oil and gas pipes transportation is one of big transportation industry of five in the national economy, kilometer surplus only China's oil gas long distance pipeline just reaches 4.5 ten thousand at present.These pipelines owing to be subjected to effects such as strata pressure, soil corrosion, galvanic corrosion, external force damage, cause accidents such as pipeline burst, leakage to take place in the long service process, influence the normal conveying operation of pipeline.
The maintenance reinforcement technology of pipeline is to guarantee pipeline integrity and prolong the pipeline important means in working life.The method that is used for the pipeline maintenance reinforcement so far both at home and abroad roughly can be summed up as welds types, anchor clamps type and composite material type three major types, and can be subdivided into built-up welding, patch installing, knit oversleeve, anchor clamps, anchor clamps annotate groups such as epoxy, glass fiber compound material and carbon fiber composite.Although these methods respectively have advantage, generally speaking, carbon fiber composite reinforcement technology is the combination property optimum, and the maintenance reinforcement technology of application prospect is arranged most, and it has following advantage: 1, do not need step-down, do not have burn-through, hydrogen embrittlement and cold short danger; 2, not decay in time of intensity can keep more than 50 years; 3, Young's modulus is consistent with body, in case the body pressure-bearing just can reach reinforcing effect; 4, not only be suitable for volume type corrosion default, and be suitable for crack-type defect, butt welded seam reinforcement and misalignment require not tight; 5, technology is simple relatively.
But the cost of carbon fiber composite reinforcement technology is higher relatively, so pipeline relevant departments generally carry out simple reinforcement with the method for local welding mending-leakage (patch installing).
Reinforcement is carried out in patch installing on the pipeline, and method is simple, easily operation.But have the space between patch and etch pit or the mechanical deterioration place, the pressure that pipeline bore often is difficult to be delivered on the patch by original pipeline, does not reach the Expected Results of patch reinforcement, so still there is greater risk in the pipeline operation.
Summary of the invention
For overcoming defective of the prior art, the invention provides a kind of improved bearing equipment wall surface method for repairing and reinforcing.The inventive method is suitable for the interim repairing or the long-term repair reinforcement of various conveyance conduits, pressurized container and affiliated facility thereof, and particularly large-scale long distance pipeline and accessory thereof renovation reinforced can prolong its working life, improves Safety Operation Pressure.
One aspect of the present invention provides the method for repairing and reinforcing of bearing equipment wall surface, and it comprises the steps:
(1) at the renovation reinforced position welding patch of the needs of this equipment wall surface;
(2) between this patch and equipment wall surface, fill filler.
In a preferred embodiment of the present invention, be preset with at least one through hole on the described patch, more preferably 2-10 hole, especially preferably 2-5 hole.Wherein step (2) is by realizing via the curable filler of at least one described through hole reperfusion serosity likeness in form between described patch and equipment wall surface.
In a further preferred embodiment, the filling nozzle that uses head to be provided with unidirectional stop valve in the step (2) carries out the perfusion of filler slurries, more preferably uses the high pressure Water slop injector to carry out described perfusion.
In a preferred embodiment, the used filler of the present invention has the compressive strength greater than 10MPa after solidifying, and more preferably has the compressive strength greater than 40MPa.
In another preferred embodiment, the used filler of the present invention has the pressure-proof elasticity modulus greater than 1GPa after solidifying, and more preferably has the pressure-proof elasticity modulus greater than 2GPa.
In a preferred embodiment of the invention, used filler is a curable polymer, includes but not limited to liquid rubber, liquid silastic, cellulose derivative, ethene polymers and copolymer, saturated or unsaturated polyester, polyacrylate, polyethers, polysulfones, aminoplast, epoxy resin, phenolic resin, polyaromatic, furans and modifier thereof, more preferably epoxy resin.
The inventive method is applicable to the reparation and the reinforcement of the wall of various bearing devices, includes but not limited to various pipelines, pipe fitting and pressurized container or the like.
Carry out reinforcement operation under the situation that the inventive method can be not out of service at equipment (as pipeline stopping transportation not), do not need large-scale mechanical hoisting equipment in the work progress, except that keeping traditional crator method characteristic of simple, can also be on the basis of crator, fill the defective of mending between scar and the body, satisfy the mechanical strength demand of body reinforcement.
Another aspect of the present invention provides method for repairing and reinforcing of the present invention at equipment wall surface, the application in especially various pipelines, pipe fitting and pressurized container wall renovation reinforced.
Description of drawings
Fig. 1 is the schematic representation before the pipeline strength rehabilitation in the embodiment of the invention 1.
Fig. 2 is the schematic representation behind the pipeline strength rehabilitation shown in Figure 1.
Fig. 3 is the schematic representation of filler slurries trend in the embodiment of the invention 1 pipeline strength rehabilitation process, and wherein the direction of arrow is the flow direction of filler slurries.
Fig. 4 is the schematic representation of cross-section of pipeline shown in Fig. 3.
Fig. 5 is the renovation reinforced preceding schematic representation of pressurized container in the embodiment of the invention 3.
Fig. 6 is the schematic representation of pressurized container shown in Figure 5 after renovation reinforced.
Embodiment
In order to understand other aspects and advantages of the present invention better, below with reference to accompanying drawing the preferred embodiments of the invention are elaborated, be to be understood that these explanations are only for illustrative rather than restrictive.
As mentioned above, one aspect of the present invention relates to the method for repairing and reinforcing of equipment wall surface, and it comprises the steps:
(1) at the renovation reinforced position welding patch of the needs of this equipment wall surface;
(2) between this patch and equipment wall surface, fill filler.
The inventive method is applicable to the particularly reparation and the reinforcement of metal wall of wall of various device, is particularly useful for the reparation and the reinforcement of various bearing equipment wall surfaces.It is the general name of the equipment of basic load with the hydrodynamic pressure that term used herein " bearing device " is often referred to pressurized container, pressure piping, pressure-bearing annex, pressure cooker etc.
In certain embodiments of the invention, there is defective in the renovation reinforced position of the need of described equipment wall surface, includes but not limited to volume type defective, planar defect, disperse damage type defective and geometric type defective, is preferably volume type defective.Described planar defect can comprise crack-type defect, and disperse damage type defective can comprise hydrogen blister and/or microscopic crack, and the geometric type defective can comprise and being in a pout and/or misalignment.The object lesson of described defective comprises circumferential weld and spiral weld defective, hot spot hole and mechanical deterioration or the like.
In specific embodiments of the present invention, at first make patch according to the shape and the size of the defective at the renovation reinforced position of need, in step (1), this patch is welded on the corresponding site of the equipment wall surface of required reinforcement then.
The patch that the present invention adopts is made by metallic material usually, and preferably the material with the renovation reinforced equipment wall surface of needs is identical.
The mode of patch installing has two kinds, and a kind of is patch to be close to as far as possible need on the renovation reinforced equipment wall surface, and another kind is at patch and needs to stay certain space between the renovation reinforced equipment wall surface.In a preferred embodiment of the invention, the space between patch and the equipment wall surface is more preferably less than 5 millimeters less than 10 millimeters, especially preferably less than 2 millimeters.
In a preferred embodiment of the invention, be preset with at least one through hole on the described patch, so that between patch and equipment wall surface, fill filler via this through hole.The number of described through hole, the position distribution on patch does not have specific (special) requirements, as long as it is convenient to the filling of filler, and the adhesive strength that can obviously not reduce between patch itself and patch and the equipment wall surface gets final product.And meet the number of through-holes of above-mentioned requirements and the setting of position is well-known to those skilled in the art.More preferably, be preset with 2-10 hole on the described patch, preferred especially 2-5 hole.
Term used herein " through hole " refers to penetrate the hole that whole patch extends to opposite side from a side of described patch.
In some preferred embodiment of the present invention, step (2) is by realizing via the curable filler of reperfusion serosity form in the void space of the through hole of reserving on the described patch between patch and equipment wall surface.These filler slurries solidify subsequently, thereby patch forms an integral body with needing renovation reinforced equipment wall surface by the filler that solidifies, and has finished the renovation reinforced of this pipeline.
In some preferred embodiment of the present invention, be preset with at least two through holes on the described patch, wherein at least one through hole is used to pour into the filler slurries as fill orifice, and at least one through hole is used to discharge gas residual between patch and the equipment wall surface as exhaust port.For the ease of perfusion and exhaust, the position of described exhaust port can be arranged on the position roughly relative with fill orifice, also can be the central position of defective.Preferably, make fill orifice be in the bottom during perfusion, make exhaust port be in the top.Certainly, through hole as fill orifice still be exhaust port be not absolute, can adjust according to actual needs, for example its can perfusion preceding half section as fill orifice, and the second half section as exhaust port.
In a preferred embodiment of the invention, can be according to actual needs the number and the position of fill orifice and exhaust port be provided with to realize required filling target better.The factor that may need during perfusion to consider includes but not limited to the extender paste liquid measure of pouring into and the curing time (rate of flooding must guarantee can finish the filler perfusion of aequum before filler solidifies) of filler slurries, also has pouring quality or the like.
For ease of the perfusion operation, filling nozzle and exhaust nozzle are installed respectively on fill orifice and exhaust port preferably when perfusion.Described filling nozzle and exhaust nozzle normally are installed on fill orifice and the exhaust port 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, preferably use commercially available high pressure Water slop injector.This syringe needle utilization ring compresses solid principle, is 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 filler has cured, remove filling nozzle and exhaust nozzle, can each fill orifice and exhaust port be sealed with screw or additive method when needing.
The used filler of the present invention is a curable polymer, includes but not limited to liquid rubber, liquid silastic, cellulose derivative, ethene polymers and copolymer, saturated or unsaturated polyester, polyacrylate, polyethers, polysulfones, aminoplast, epoxy resin, phenolic resin, polyaromatic, furans with and modifier.
In a preferred embodiment, the compressive strength after the used filler of the present invention solidifies is greater than 10MPa, and more preferably compressive strength is greater than 20MPa.
In another preferred embodiment, after solidifying, the used filler of the present invention has pressure-proof elasticity modulus greater than 1GPa, preferably have pressure-proof elasticity modulus greater than 2GPa.
Another aspect of the present invention provides method for repairing and reinforcing of the present invention at equipment wall surface, the application in especially various pipelines, pipe fitting and pressurized container wall renovation reinforced.
In order further to set forth related material of present technique and construction process, provided following embodiment.But following examples should not be construed as by any way and limit the scope of the invention.
The reinforcement of embodiment's 1 pipeline
As shown in Figure 1, needing reinforcement pipeline 1 diameter is Φ 325mm, wall thickness 7mm, material Q235b.On pipe outer wall 2 o'clock of the clock direction volume type hot spot 2 is arranged, the degree of depth reaches 4mm.The pipeline yield pressure is about 6MPa as calculated, therefore need carry out reinforcement.Below utilize patch installing of the present invention to annotate filling method this corrosive pipeline point is carried out reinforcement.Operating procedure is as follows:
1. the processing of patch
According to factors such as the shape of outer diameter tube and hot spot and sizes, be Φ 325mm by diameter, wall thickness 7mm, same material is the pipe of Q235b, through lancing, the meticulous machinings of method such as angle mill obtain patch 3.Dirts such as the oil of its inner and outer surface, lacquer, rust, burr are cleared up.
On patch, open fill orifice 4 and exhaust port 5 respectively.Mantle fiber on each hole is so that install filling nozzle and exhaust nozzle.(seeing accompanying drawing 2 for details)
2. welding patch
Patch is close to outside the hot spot 2 on the pipeline 1, is welded on hot spot 2 outsides equably.
3. perfusion filler
Filling nozzle and exhaust nozzle are installed on each hole of described sleeve pipe.Adopt hand pump via infusion epoxy resin in the space of fill orifice 4 between patch 3 and pipeline 1 outer wall, when the exhaust port 5 that is arranged in the top overflows epoxy resin, stop perfusion (referring to Fig. 3 and 4).Used epoxy resin is the JX-1 epoxy resin (compressive strength: 54.3MPa of 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).
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, thereby has reached the reinforcement purpose of this pipeline.
The full-scale bursting test of embodiment's 2 reinforcement pipelines
According to SY-T5992-94 " conveying steel pipe hydrostatic pressing bursting test method ", on the pipeline of two sections ∮ 325 * 7, simulate same volume defect (60 * 40mm, dark 5.3mm).Make same patch (180 * 120mm).Use common patch (crator) and patch installing of the present invention to annotate the filling method reinforcement respectively.After 24 hours, carry out full-scale bursting test.Crack, two places appears in the common crator pipeline of result when 15.8MPa, breach appears in institute's repairing pipes fault location; And still excellent when 28MPa through the pipeline after the patch installing notes filling method of the present invention reinforcement, show that the pipeline bearing capacity obviously improves, reach reinforcing effect.
The reinforcement of embodiment's 3 pressurized containers
For the defective 7 (seeing accompanying drawing 5) that the mechanical deterioration on the pressurized container 6 causes, we adopt with embodiment 1 in identical step carry out renovation reinforced.Wherein, filler is selected 191 unsaturated polyester resins of resin company in the Jiangxi, Jiangxi for use.
(see accompanying drawing 6) after the reinforcement, to the container pressure-raising.When pressure reached 10MPa, container and reinforcement place were excellent, prove this technology reinforcement after, reach the expection reinforcing effect.
Should be appreciated that foregoing detailed description only is for understanding the indefiniteness explanation that the present invention makes the present invention better.Those skilled in the art can make the various modifications that are equal to, replacement and change to the present invention under situation without departing from the spirit and scope of the present invention, these are revised, replace and embodiment after changing still belongs to protection scope of the present invention.
Claims (10)
1. bearing equipment wall surface is carried out renovation reinforced method, may further comprise the steps:
(1) at the renovation reinforced position welding patch of the needs of described equipment wall surface;
(2) between described patch and equipment wall surface, fill filler.
2. method according to claim 1, be preset with at least one through hole on the wherein said patch, preferred 2-10 through hole, more preferably 2-5 through hole, and step (2) is by realizing via at least one described through hole curable filler of reperfusion serosity form between described patch and equipment wall surface.
3. method according to claim 2, wherein the filling nozzle that uses head to be provided with unidirectional stop valve in the step (2) carries out the perfusion of filler, preferably uses the high pressure Water slop injector to carry out described perfusion.
4. according to claim 2 or 3 described methods, have compressive strength after wherein said filler solidifies, preferably have compressive strength greater than 40MPa greater than 10MPa.
5. according to each described method among the claim 2-4, have pressure-proof elasticity modulus after wherein said filler solidifies, preferably have pressure-proof elasticity modulus greater than 2GPa greater than 1GPa.
6. according to each described method among the claim 2-5, wherein said filler is for being selected from liquid rubber, liquid silastic, cellulose derivative, ethene polymers and copolymer, saturated or unsaturated polyester, polyacrylate, polyethers, polysulfones, aminoplast, epoxy resin, phenolic resin, polyaromatic, the curable polymer of furans and modifier thereof, more preferably epoxy resin.
7. according to each described method among the claim 1-6, the spacing between wherein said patch and the equipment wall surface preferably less than 5 millimeters, is more preferably less than 2 millimeters less than 10 millimeters.
8. according to each described method among the claim 1-7, there is defective in the renovation reinforced position of wherein said needs, described defective is selected from volume type defective, planar defect such as crack-type defect, disperse damage type defective such as hydrogen blister and/or microscopic crack, and the geometric type defective is preferably volume type defective as being in a pout and/or misalignment.
9. according to each described method among the claim 1-8, wherein said bearing device comprises pipeline, pipe fitting and pressurized container.
10. the purposes of each described method aspect bearing equipment wall surface renovation reinforced among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100802197A CN101245885A (en) | 2007-02-13 | 2007-02-13 | Mend filling and renovation reinforced method for bearing equipment wall surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100802197A CN101245885A (en) | 2007-02-13 | 2007-02-13 | Mend filling and renovation reinforced method for bearing equipment wall surface |
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| CN101245885A true CN101245885A (en) | 2008-08-20 |
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| CNA2007100802197A Pending CN101245885A (en) | 2007-02-13 | 2007-02-13 | Mend filling and renovation reinforced method for bearing equipment wall surface |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799098A (en) * | 2010-04-07 | 2010-08-11 | 郭恒德 | Composite plates for pipeline repair and pipeline repair method adopting same |
| CN102528349A (en) * | 2012-01-17 | 2012-07-04 | 山东电力研究院 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
| CN104648851A (en) * | 2013-11-18 | 2015-05-27 | 铜陵市大明玛钢有限责任公司 | Leak repairing method for acid tank by pressure grouting |
| CN105090677A (en) * | 2015-09-30 | 2015-11-25 | 山东钢铁股份有限公司 | Leakage stoppage method for root leakage of storage tank |
| CN107504317A (en) * | 2017-07-25 | 2017-12-22 | 上海安宏建设工程有限公司 | A kind of non-stop plugging technique of gas pipeline crack formula leakage |
| CN109986279A (en) * | 2017-12-31 | 2019-07-09 | 乌鲁木齐森纳途信息科技有限公司 | A kind of pyrolysis furnace high pressure steam boiler water-supply valve welding repair method |
| CN110640404A (en) * | 2019-09-24 | 2020-01-03 | 浙江中包派克奇包装有限公司 | Method for repairing fixed waist-round long slotted hole of slotting tool rest |
| CN112460374A (en) * | 2020-11-09 | 2021-03-09 | 华创天元实业发展有限责任公司 | Rush-repair construction process for multiple reinforced steel-plastic composite pipe |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799098A (en) * | 2010-04-07 | 2010-08-11 | 郭恒德 | Composite plates for pipeline repair and pipeline repair method adopting same |
| CN102528349A (en) * | 2012-01-17 | 2012-07-04 | 山东电力研究院 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
| CN102528349B (en) * | 2012-01-17 | 2015-03-04 | 山东电力研究院 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
| CN104648851A (en) * | 2013-11-18 | 2015-05-27 | 铜陵市大明玛钢有限责任公司 | Leak repairing method for acid tank by pressure grouting |
| CN105090677A (en) * | 2015-09-30 | 2015-11-25 | 山东钢铁股份有限公司 | Leakage stoppage method for root leakage of storage tank |
| CN105090677B (en) * | 2015-09-30 | 2017-04-19 | 山东钢铁股份有限公司 | Leakage stoppage method for root leakage of storage tank |
| CN107504317A (en) * | 2017-07-25 | 2017-12-22 | 上海安宏建设工程有限公司 | A kind of non-stop plugging technique of gas pipeline crack formula leakage |
| CN109986279A (en) * | 2017-12-31 | 2019-07-09 | 乌鲁木齐森纳途信息科技有限公司 | A kind of pyrolysis furnace high pressure steam boiler water-supply valve welding repair method |
| CN109986279B (en) * | 2017-12-31 | 2020-11-17 | 新疆工程学院 | Method for welding and repairing water supply valve of high-pressure steam boiler of cracking furnace |
| CN110640404A (en) * | 2019-09-24 | 2020-01-03 | 浙江中包派克奇包装有限公司 | Method for repairing fixed waist-round long slotted hole of slotting tool rest |
| CN112460374A (en) * | 2020-11-09 | 2021-03-09 | 华创天元实业发展有限责任公司 | Rush-repair construction process for multiple reinforced steel-plastic composite pipe |
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Application publication date: 20080820 |