A kind of pipeline flexible anticorrosion structure
Technical field
The utility model is a kind of pipeline flexible anticorrosion structure, relates to the general corrosion protection and the pipe-line system technical field of metallic material.
Background technique
Anticorrosion for a long time boundary is devoted to the Study on anticorrosion technique exploitation always, and constantly has new anti-corrosion material to occur.But on the whole, all still adopt conventional solid-state or liquid anti-corrosion material, the anticorrosive coat of formation all is solid-state, can not bend.This is to be suitable for fully for most of occasions.But some occasion is just inapplicable, as the on-the-spot preventing corrosion of repaired mouth of pipeline, bury that special-shaped facilities such as the ground valve is anticorrosion, flange are anticorrosion, a discrepancy location of stand is anticorrosion.The flexible corrosion protection material is a kind of viscoelastic polymer that never solidifies, and can be used for on-the-spot preventing corrosion of repaired mouth, buries that special-shaped facilities such as the ground valve is anticorrosion, flange are anticorrosion, the location of coming in and going out of stand is anticorrosion, is better than the solid-state or liquid anti-corrosion material of routine greatly.
Material of the same type has only Dutch STOPAQ company to produce at present abroad.It is anticorrosion to be used for profiled pieces such as valve, flange, elbow in once a plurality of abroad engineerings, connection Britain that is building and Dutch pipeline, and in the Julianadorp-Calantsoog section, the product that has adopted STOPAQ is as the joint coating on pipeline material.Domestic still do not have same type of material exploitation and produce, and the superiority understanding of domestic antiseptic property to it is also quite not enough.In recent years the product of STOPAQ company is only mended acquisition application on wound and the repaired mouth at the pipeline and the pipe fitting of transfering natural gas from the west to the east, Shan Jingxian, Guangdong roc, Southwest Oil and pipeline company of PetroChina Company Limited..
Up to now, the flexible corrosion protection material of domestic and international application is mainly monomer material, and its anti-soil stress performance is relatively poor, is not suitable for using heavy-caliber pipeline or uses in the bigger environment of soil stress.The application is replenishing of patent of invention " a kind of pipeline flexible anti-corrosion material " (application number 200910093858.6) and continuity, is the structure of this pipeline flexible anti-corrosion material.
The model utility content
The purpose of this utility model be the design a kind of global formation, not yielding, the pipeline flexible of surface treatment requirement easily anticorrosion structure conveniently stores, transports, constructs.
Structure of the present utility model as depicted in figs. 1 and 2, it is made up of for 4 five layers the release paper 1 that scribbles silicone oil, flexible material layer 2, PE net 3, base material; Respectively there is one deck flexible material layer 2 both sides up and down at PE net 3, the flexible material layer 2 outer release paper 1 that scribble silicone oil that paste of downside, the flexible material layer 2 outer base materials 4 that post of upside.
Wherein:
The release paper 1 that scribbles silicone oil is polyethylene (PE) or PETG (PET) release paper, thickness 0.05~0.2mm;
Flexible material layer 2 is divided into up and down two layers of flexible material, and its integral thickness 1.6~2.0mm, flexible material layer thickness are divided into two kinds on demand: first kind is to be the center with PE net 3, and thickness is identical up and down; Second kind is to be main glue-line with the release paper 1 and the flexible material between the PE net 3 that scribble silicone oil, and the thickness of this layer is 1.4~2.0mm, and the flexible material between base material 4 and the PE net 3 is auxiliary glue-line, and thickness is less, is 0~0.2mm.
PE net 3 thickness 0.1~0.3mm;
Base material 4 is selected PVC or PE film for use, and thickness range is 0.02-0.1mm.
Each layer major function is:
Scribble the release paper 1 of silicone oil: major function is the bonding plane of insulation blocking flexible material layer, and convenient shipment prevents to produce when material from depositing adhesion; When construction, remove release paper, keep bonding plane viscosity.
Flexible material layer 2: flexible material layer is the major component of flexible corrosion protection material.Major function is by sealing, and characteristics such as self-healing realize antiseptic property.
PE net 3: major function is for to play the material monolithic balanced action among flexible material, prevents that material from depositing, being out of shape in construction and the running.
Base material 4: major function is similar to release paper, plays the effect of insulation blocking flexible material layer, also has certain impermeable role simultaneously.
The advantage of this pipeline flexible anticorrosion structure is: this flexible material shows the viscous-elastic behaviour of polymer, be the characteristics of elastic structure and viscosity coexistence, make the viscoelasticity of material reach an optimal balance point, after bearing external impacts, its original thickness of viscoelastic physical efficiency recovery.The cold flow characteristic of this material is a viscosity simultaneously, makes it tightly be bonded at steel tube surface again, reaches the purpose of sealing corrosion.Because this material has certain softness and cold flow properties, be difficult for being shaped, thus the PE net added at material internal, to reach the purpose of global formation, and Intranet has guaranteed the local flow of material, prevents that simultaneously material from depositing, being out of shape in construction and the running.Because the distinctive self-healing properties of this material, its performance between solid and liquid, store, transport so coating release paper and PVC film are convenient, avoid adhesion, reach the waterproof purpose simultaneously, for the corrosion that prevents protected base material provides positive effect.When flexible material was constructed as anticorrosive coat, the steel tube surface processing reached the St2 level and gets final product, and compared with other anti-corrosion materials, and it has construction process and tolerant surface treatment requirement easily.
Description of drawings
Fig. 1 pipeline flexible anticorrosion structure structural drawing
Fig. 2 pipeline flexible anticorrosion structure sectional drawing
Wherein 1-scribbles the release paper 2-flexible material layer of silicone oil
3-PE net 4-base material
Embodiment
Embodiment. this example is an experiment structure, and it constitutes as depicted in figs. 1 and 2.It is made up of for 4 five layers the release paper 1 that scribbles silicone oil, flexible material layer 2, PE net 3, base material; Respectively there is one deck flexible material layer 2 both sides up and down at PE net 3, the flexible material layer 2 outer release paper 1 that scribble silicone oil that paste of downside, the flexible material layer 2 outer base materials 4 that post of upside.
Wherein:
Release paper 1 composition that scribbles silicone oil is PETG (PET), and thickness is 0.16mm;
Flexible material layer 2 integral thickness are 1.8mm, and wherein the thickness of glue-line is 1.4mm between release paper 1 and the PE net 3; Thickness between base material 4 and the PE net 3 is 0.4mm;
PE net 3 thickness are 0.18mm;
Base material 4 is selected the PE film for use, and thickness is 0.1mm.
The performance parameter of this routine last test sees Table 1.
Table 1 flexible corrosion protection material property
As seen this routine structure reaches the purpose of global formation, and Intranet guaranteed the local flow of material, prevent simultaneously material depositing, distortion when constructing.Coat the convenient storage of release paper and PVC film, transportation, avoid adhesion, reach the waterproof purpose simultaneously, for the corrosion that prevents protected base material provides positive effect.When flexible material was constructed as anticorrosive coat, it had construction process and tolerant surface treatment requirement easily.