CN205479984U - Gas piping outer wall anticorrosion structure - Google Patents
Gas piping outer wall anticorrosion structure Download PDFInfo
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- CN205479984U CN205479984U CN201620174405.1U CN201620174405U CN205479984U CN 205479984 U CN205479984 U CN 205479984U CN 201620174405 U CN201620174405 U CN 201620174405U CN 205479984 U CN205479984 U CN 205479984U
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- pipeline
- wall
- viscoelastic
- gas piping
- anticorrosion structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Paints Or Removers (AREA)
Abstract
The utility model relates to a gas piping outer wall anticorrosion structure has scribbled the visco -elastic body antiseptic plaster to being less than pipeline outer wall surface defect or recess, and the pipeline outer wall of scribbling the visco -elastic body antiseptic plaster forms smooth surface, is equipped with visco -elastic body corrosion -preventing glue lacing, resistant waterproof top -coat layer and the outer lacing that protects of waiting of elasticity polymer on smooth surface at least, and visco -elastic body corrosion -preventing glue lacing, elasticity polymer be resistant waits waterproof top -coat layer and protect the lacing outside and by interior and set gradually outward. The construction of this anticorrosion structure requires lowly to pipeline surface treatment, only need reach st2~St3, need not the sandblast, each anticorrosive coating has elasticity, can adapt to the deformation and the complicated regional protection on pipeline surface to reach the effect of do not ftracture not la tuo and exoneration, have good seal and corrosion resisting property, chemical resistance and weather resistance are strong, can keep long -time stable performance at coastal area and utmost point cold pole thermal region.
Description
Technical field
This utility model belongs to gas piping technical field of anticorrosion, is specifically related to a kind of gas piping outer wall anticorrosion structure.
Background technology
It is all to be sent to steel rolling mill, power plant, sintering plant etc. by its pipe network to use unit at steel mill's blast furnace, converter, coke-stove gas, thus generates huge gas conveying tube net.Owing to coal gas containing the sour gas of relatively multiple types (such as: SO2、HCl、CO2Deng), reduction along with temperature, when reaching water vapour dew point temperature, water vapour is become liquid by gaseous state and condenses into moisture film, sour gas in coal gas is dissolved in moisture film and is enriched with the etchant solution forming high concentration, stronger electrochemical corrosion is brought, so the most all how gas piping inwall is protected by common concern to inner-walls of duct.And in the coastal region of high salt high humidity and very hot extremely cold region, gas piping outer wall is often because there is corrosion in various degree in these rugged environment conditions, the especially labyrinth junction such as pipeline outer wall weld and flange, the corrosion of pipeline outer wall and the corrosion of inner-walls of duct act on simultaneously and accelerate corrosive pipeline perforation, cause the safety problems such as gas leak, decreasing the service life of pipeline, therefore, the anticorrosion for gas piping outer wall is also highly important simultaneously.
Means of defence currently for gas piping outer wall mainly has coating protection (such as Asphalt Coating and coating etc.), and few places have employed impressed cathodic current Protection Code.Pipeline is in long-term production run, although tradition anti-corrosion material serves certain protective effect for pipeline, but for the pipeline in crossing project, the yard pipeline that the linking of multiple caliber is densely populated, bend loss, for rock section and repaired mouth segment pipe etc. are prone to occur the pipeline corrosion protection of corrosion failure to protect, in actual motion in various degree occur in that not to time projected life just damaged situation about coming off, bring huge economic loss to country and industry, and impressed cathodic current protection investment is big, construct more complicated, also need to regularly detect and manage, inconvenience is brought to iron and steel enterprise.
Utility model content
This utility model embodiment provides a kind of gas piping outer wall anticorrosion structure, at least can solve the segmental defect of prior art.
This utility model embodiment relates to a kind of gas piping outer wall anticorrosion structure, to being coated with viscoelastic body antiseptic plaster less than pipeline outer wall surface defect or recess, the pipeline outer wall being coated with viscoelastic body antiseptic plaster forms smooth surface, set gradually from inside to outside at least provided with viscoelastic-body antiseptic adhesive tape layer, the weather-proof waterproof finishing coat of elastic polymer and outer protection belt, the weather-proof waterproof finishing coat of described viscoelastic-body antiseptic adhesive tape layer, described elastic polymer and described outer protection belt on described smooth surface.
As one of embodiment, between described smooth surface and described viscoelastic-body antiseptic adhesive tape layer, it is additionally provided with elastic polymer priming coat.
As one of embodiment, the thickness of described elastic polymer priming coat is not less than 0.5mm.
As one of embodiment, for new clothes pipeline, pipeline outer wall surface defect or recess include at pipe surface injustice and pipeline welding junction；For built pipeline of need to repairing, pipeline outer wall surface defect or recess include pipe perforation leakage position and pipeline external surface corrosion location.
As one of embodiment, in described viscoelastic-body antiseptic adhesive tape layer, the width of described viscoelastic-body antiseptic adhesive tape is 100 ~ 300mm, and the lap width of adjacent two viscoelastic-body antiseptic adhesive tapes is not less than 50mm.
As one of embodiment, the weather-proof waterproof finishing coat of described elastic polymer is to be formed at the described viscoelastic-body antiseptic adhesive tape layer surface at least brushing twice weather-proof waterproof material of elastic polymer.
As one of embodiment, the brushing thickness of the weather-proof waterproof material of per pass elastic polymer is not less than 2mm.
As one of embodiment, in described outer protection belt, the width of outer buffer zone is 100 ~ 200mm, unidirectional winding 1 ~ 3 layer, and the lap width of adjacent two buffer zones is not less than 50mm.
This utility model embodiment at least achieves following beneficial effect: pipe surface process is required low by this anticorrosion structure, only need to reach St2 ~ St3, it is not necessary to sandblasting；Each anticorrosive coat has elasticity, adapts to the deformation of pipe surface and the protection of complex region, and reaches the effect not pulling and absolving that do not ftractures；Having good seal and corrosion resisting property, chemical resistance and weather resistance strong, can keep long-time stable performance in coastal area and pole cold pole thermal region, service life was up to more than 10 years；Gas piping outer wall anticorrosion structure is simple, easy construction, it is simple to maintenance, saves time, laborsaving, expense is low.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the gas piping outer wall anticorrosion structure that Fig. 1 provides for this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of this utility model protection.
Such as Fig. 1, this utility model embodiment provides a kind of gas piping outer wall anticorrosion structure, to being coated with viscoelastic body antiseptic plaster 2 less than pipeline outer wall 1 surface defect or recess, the pipeline outer wall 1 being coated with viscoelastic body antiseptic plaster 2 forms smooth surface, at least provided with viscoelastic-body antiseptic adhesive tape layer 4, the weather-proof waterproof finishing coat 5 of elastic polymer and outer protection belt 6 on described smooth surface, the weather-proof waterproof finishing coat 5 of described viscoelastic-body antiseptic adhesive tape layer 4, described elastic polymer and described outer protection belt 6 set gradually from inside to outside.
Wherein, before smearing viscoelastic body antiseptic plaster 2, pipeline outer wall 1 need to be carried out removing surface, require low to the process of gas piping surface, removing surface degree only need to reach St2 ~ St3, it is not necessary to sandblasting.Thus, removing surface work is preferably and uses hand cleaning mode, and with scale removal, loose corrosion, old coating and dirt, removing surface degree reaches St2 ~ St3 can carry out next procedure.For new clothes pipeline, pipeline outer wall 1 surface defect or recess include at pipe surface injustice and pipeline welding junction；For built pipeline of need to repairing, pipeline outer wall 1 surface defect or recess include pipe perforation leakage position and pipeline external surface corrosion location.
Continue above-mentioned anticorrosion structure, viscoelastic body antiseptic plaster 2 can be all smeared on pipeline outer wall 1 surface, also only at pipe surface injustice and pipeline welding junction or pipe perforation leakage position and outer surface corrosion location can be smeared viscoelastic body antiseptic plaster 2, to be advisable at pipeline outer wall 1 surface formation smooth surface, uniform brushing elastic polymer priming coat and winding in subsequent handling is facilitated to paste viscoelastic-body antiseptic adhesive tape.That is: on gas piping outer wall 1, form multilayer coating structure, it is followed successively by viscoelastic body anticorrosion layer of paste 2, elastic polymer priming coat 3, viscoelastic-body antiseptic adhesive tape layer 4, the weather-proof waterproof finishing coat 5 of elastic polymer and outer protection belt 6 from inside to outside, above-mentioned viscoelastic body anticorrosion layer of paste 2 arranges depending on the position difference on gas piping outer wall 1 or is not provided with, at least at pipe surface injustice and pipeline welding junction (newly installed pipe) or pipe perforation leakage position and outer surface corrosion location (having installed pipe) have this viscoelastic body anticorrosion layer of paste 2.Described viscoelastic body antiseptic plaster 2 is preferably the elastic anti-corrosion erosion cream containing metal dust, metal dust can use the ultra tiny metal dust such as tungsten, molybdenum, the addition of metal dust not only strengthens painting film strength and will not produce sintering, the mobility of anticorrosion cream, cohesiveness and resistance to elevated temperatures, ageing-resistant performance etc. can be effectively improved, make anticorrosion cream have the characteristics such as the most anti-corrosion, chemical-resistant resistance.In said method, the surface drying time of viscoelastic body antiseptic plaster 2 needs at least 4h, and the time of doing solid work is at 12h ~ 24h.
As a kind of preferred structure of the present embodiment, between described smooth surface and described viscoelastic-body antiseptic adhesive tape layer 4, it is additionally provided with elastic polymer priming coat 3.Described elastic polymer priming coat 3 is preferably and uses Elastic polyurethane brushing to form, and the thickness of this elastic polymer priming coat 3 should be not less than 0.5mm, surface drying time at least 4h, does solid work 12 ~ 24h；Above-mentioned Elastic polyurethane uses commercially available Elastic polyurethane.
Continue above-mentioned anticorrosion structure, and in described viscoelastic-body antiseptic adhesive tape layer 4, the width of described viscoelastic-body antiseptic adhesive tape is 100 ~ 300mm, and the lap width of adjacent two viscoelastic-body antiseptic adhesive tapes is not less than 50mm.Above-mentioned viscoelastic-body antiseptic adhesive tape can use commercially available STOPAQ series viscoelastic body dope.
Continue above-mentioned anticorrosion structure, forms the weather-proof waterproof finishing coat 5 of described elastic polymer at the viscoelastic-body antiseptic adhesive tape layer 4 surface at least brushing twice weather-proof waterproof material of elastic polymer.Preferably, the weather-proof waterproof finishing coat 5 of described elastic polymer uses the weather-proof waterproof finish paint brushing of elastic polyurethane to form, and the brushing thickness of the weather-proof waterproof material of per pass elastic polymer is not less than 2mm.The surface drying time of the weather-proof waterproof finishing coat 5 of above-mentioned elastic polymer is at least 4h, and the time of doing solid work is about 24h.
Optimize above-mentioned anticorrosion structure further, above-mentioned Elastic polyurethane and the weather-proof waterproof finish paint of elastic polyurethane is used to have higher elasticity, good wearability and chemicals-resistant and oil resistivity, good water-proof effect, the antiseptic effect of gas piping can be effectively improved, adhesive force is strong, can increase the adhesion of each anticorrosion interlayer, be effectively improved the stability of gas piping outer wall 1 anticorrosion structure.Preferably, above-mentioned Elastic polyurethane and the weather-proof waterproof finish paint of elastic polyurethane use the coating of following composition: macromolecular coating material and auxiliary agent thereof that this coating is made up of A, B two-component form, component A is the performed polymer (A liquid) with isocyanate group (-NCO), and B component is with the mill base (B liquid) of the auxiliary agent compositions such as chain extender, filler, pigment, antioxidant, UV absorbent.Above-mentioned coating has the strongest cohesive force to various materials, binding ability between reinforcing material, form high-elastic, tough and tensile, soft and seamless CTPU anticorrosion waterproof membrane on its surface simultaneously, there is excellent anti-corrosion weatherability and water proofing property, be suitable for expanding with heat and contract with cold and mechanically deform of substrate surface.
Continue above-mentioned anticorrosion structure, for the construction of outer protection belt 6, uses cylinder rolling, it is to avoid interlayer bulge fold in outer buffer zone winding process.Above-mentioned outer buffer zone can use commercially available epoxide-resin glue or the outer buffer zone of carbon fiber, and the width of outer buffer zone is 100 ~ 200mm, unidirectional winding 1 ~ 3 layer, and the lap width of adjacent two buffer zones is not less than 50mm.
The present embodiment at least has the advantages that pipe surface process is required low by the construction of this anticorrosion structure, only need to reach St2 ~ St3, it is not necessary to sandblasting；Each anticorrosive coat has elasticity, adapts to the deformation of pipe surface and the protection of complex region, and reaches the effect not pulling and absolving that do not ftractures；Having good seal and corrosion resisting property, chemical resistance and weather resistance strong, can keep long-time stable performance in coastal area and pole cold pole thermal region, service life was up to more than 10 years；Gas piping outer wall 1 anticorrosion structure is simple, easy construction, it is simple to maintenance, saves time, laborsaving, expense is low.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (8)
1. a gas piping outer wall anticorrosion structure, it is characterized in that: to being coated with viscoelastic body antiseptic plaster less than pipeline outer wall surface defect or recess, the pipeline outer wall being coated with viscoelastic body antiseptic plaster forms smooth surface, set gradually from inside to outside at least provided with viscoelastic-body antiseptic adhesive tape layer, the weather-proof waterproof finishing coat of elastic polymer and outer protection belt, the weather-proof waterproof finishing coat of described viscoelastic-body antiseptic adhesive tape layer, described elastic polymer and described outer protection belt on described smooth surface.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: between described smooth surface and described viscoelastic-body antiseptic adhesive tape layer, it is additionally provided with elastic polymer priming coat.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: the thickness of described elastic polymer priming coat is not less than 0.5mm.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: for new clothes pipeline, pipeline outer wall surface defect or recess include at pipe surface injustice and pipeline welding junction；For built pipeline of need to repairing, pipeline outer wall surface defect or recess include pipe perforation leakage position and pipeline external surface corrosion location.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: in described viscoelastic-body antiseptic adhesive tape layer, the width of described viscoelastic-body antiseptic adhesive tape is 100 ~ 300mm, and the lap width of adjacent two viscoelastic-body antiseptic adhesive tapes is not less than 50mm.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: the weather-proof waterproof finishing coat of described elastic polymer is to be formed at the described viscoelastic-body antiseptic adhesive tape layer surface at least brushing twice weather-proof waterproof material of elastic polymer.
Gas piping outer wall anticorrosion structure the most according to claim 6, it is characterised in that: the brushing thickness of the weather-proof waterproof material of per pass elastic polymer is not less than 2mm.
Gas piping outer wall anticorrosion structure the most according to claim 1, it is characterised in that: in described outer protection belt, the width of outer buffer zone is 100 ~ 200mm, unidirectional winding 1 ~ 3 layer, and the lap width of adjacent two buffer zones is not less than 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620174405.1U CN205479984U (en) | 2016-03-08 | 2016-03-08 | Gas piping outer wall anticorrosion structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620174405.1U CN205479984U (en) | 2016-03-08 | 2016-03-08 | Gas piping outer wall anticorrosion structure |
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| CN205479984U true CN205479984U (en) | 2016-08-17 |
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| CN201620174405.1U Active CN205479984U (en) | 2016-03-08 | 2016-03-08 | Gas piping outer wall anticorrosion structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591680A (en) * | 2018-05-23 | 2018-09-28 | 北京市燃气集团有限责任公司 | Steel gas pipe underground anticorrosion structure and construction method above a kind of ground library |
| CN114754198A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Corrosion prevention method and structure of pipeline connecting fastener |
-
2016
- 2016-03-08 CN CN201620174405.1U patent/CN205479984U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591680A (en) * | 2018-05-23 | 2018-09-28 | 北京市燃气集团有限责任公司 | Steel gas pipe underground anticorrosion structure and construction method above a kind of ground library |
| CN114754198A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Corrosion prevention method and structure of pipeline connecting fastener |
| CN114754198B (en) * | 2021-01-08 | 2024-04-30 | 中国石油天然气集团有限公司 | Corrosion prevention method and structure of pipeline connecting fastener |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |