CN205938219U - Anti -corrosion enamel composite pipe - Google Patents
Anti -corrosion enamel composite pipe Download PDFInfo
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- CN205938219U CN205938219U CN201620892270.2U CN201620892270U CN205938219U CN 205938219 U CN205938219 U CN 205938219U CN 201620892270 U CN201620892270 U CN 201620892270U CN 205938219 U CN205938219 U CN 205938219U
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- enamel
- steel pipe
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- class flange
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Abstract
The utility model discloses an anti -corrosion enamel composite pipe. The frit composition that adopts can guarantee that the enamel anticorrosive coating of hot rolling steel pipe inner wall does not have the scale and explodes the defect. Realization and the high -efficient scale manufacturing that jumbo size steel pipe inner wall enamel technology can be guaranteed to formula chain transmission system, the continuous firing furnace of tunnel type etc. Is put to the collection relevant with technical scheme. Whole prefabricated enamel anticorrosive coating, polytetrafluoroethylene gasket and correlation structure can guarantee anticorrosion structure's continuity and integrality. Effective sealed continuity that reaches the anticorrosive coating is convenient for realize by the butt welding pipe flange that has spacing boss, sealed groove structure respectively to do benefit to the site operation, annular thermal insulation cavity can make enamel anticorrosive coating and seal structure avoid welding the too big influence of high temperature, avoids the protective system to become invalid.
Description
Technical field
This utility model belongs to pipeline corrosion protection field, is related to a kind of anti-corrosion enamel compound pipeline complex pipeline.
Background technology
Corrosion always causes the first cause of the industry pipeline damage such as oil, natural gas and inefficacy.
Currently, it is used for the coating of pipeline corrosion protection both at home and abroad based on organic coating, such as Colophonium, coal tar enamel, clinkering ring
Oxygen powder etc..Although people still in the continuous organic coating researching and developing more excellent performance, can not fundamentally solve it
Intrinsic easily aging and temperature tender subject, anti-corrosion life is extremely restricted.
Inorganic Non-metallic Materials are so that its process based prediction model is stable, not aging, anti-corrosion, wear-resisting, heatproof, resistance reducing performance are excellent
Different grade gradually causes the attention of pipeline corrosion protection insider, and countries in the world are all using inorganic non-metallic composite anti-corrosive pipeline as weight
Point brainstorm subject.Pertinent literature shows, from phase late 1970s, some scholars attempt to pottery as coating material,
So far people have made intensive studies in terms of ceramic coating pipeline, enamel coating pipeline and glass coating pipeline, but due to
Technical limitations, apply not yet on a large scale in China.
At present, the technical barrier limiting inorganic silicate coating sizable application mainly includes：Steel for pipe is hot-rolled steel,
After itself and silicate paint high temperature sintering, the quick-fried defect of squama easily occurs, and lead to coating and anti-corrosion inefficacy；Steel pipe inner wall enamel/glass
Technique is restricted by steel pipe sizes, and Large Diameter Long Pipes road inwall enamel technology is still immature；The seriality of anticorrosive coat during pipeline welding
It is difficult to ensure that with integrity.This utility model solves three above in terms of Glaze Composition, pipeline manufacture and construction technology etc.
Problem, will bring material impact to the pipeline corrosion protection in the fields such as the energy, Urban Buried Pipeline Network, military project.
Content of the invention
Goal of the invention：The purpose of this utility model is using enamel anticorrosion layer, thoroughly solves in current pipeline corrosion protection field
The problems such as physicochemical properties of organic coating are unstable, easily aging, weatherability is poor, and it is suitable to realize the hot-rolled steel of enamel anticorrosion layer
With property, integrity, large scale and automatic high-efficiency manufacture, promote the heavy industrialization application of enamel anticorrosion layer.
Technical scheme：
A kind of anti-corrosion enamel compound pipeline complex pipeline it is characterised in that：This pipeline is connected by plurality of sections of steel pipes and forms；Described each section steel pipe
The two ends convex surface class flange with positive stop lug boss for the butt welding and the concave surface class flange with sealed groove respectively；Described steel pipe inner wall is warded off
Porcelain anticorrosive coat；Described steel pipe is hot rolled seamless steel tube, and length is 6000～10000mm, and external diameter is 76～426mm；Described sealing
Channel section is L-shaped.
Connected mode between described each section steel pipe is convex surface class flange and concave surface class flange passes through argon arc welding in large end face even
Connect.
All there is annular groove on described convex surface class flange and concave surface class flange；Described annular groove is when two kinds of flanges dock
Form annular heat cavity；Described positive stop lug boss and sealed groove are all close to enamel anticorrosion layer.
The shape of described positive stop lug boss and sealed groove match；In described sealed groove, teflon gasket is installed,
And compressed by positive stop lug boss, seal；Right inside the radially inner side of described teflon gasket cross section and enamel anticorrosion layer
Together.
Described compound pipeline complex pipeline also includes elbow, threeway or multiple way union part in the part turned round, shunt or conflux；
The butt welding of end parts of described elbow, threeway or multiple way union part has convex surface class flange or concave surface class flange, and inner surface is prefabricated with
Enamel anticorrosion layer；Described elbow, threeway or multiple way union part and steel pipe（1,2）The mode connecting is in sealed groove（7）
Interior installation teflon gasket（8）Afterwards, convex surface class flange（4）With concave surface class flange（5）Connected in large end face by argon arc welding.
Advantage and effect：This utility model adds certain fluorite, prodan in glaze, adds high-quality to glue in mill addition
Soil, calcining quartz are it is therefore an objective to eliminate the quick-fried defect of squama of enamel anticorrosion layer.Meanwhile, the company of anticorrosive coat be ensure that on attachment structure
Continuous property and integrity, effectively reduce the welding impact to enamel anticorrosion layer and teflon gasket for the high temperature, it is to avoid anti-corrosion mistake
Effect；It is easy to site operation.Class bump joint adopts identical material with steel pipe, can be prevented effectively from electrochemical corrosion.
Brief description：
Fig. 1 is the general profile figure after the fastener for connection of two ends butt welding pipe flange in this utility model；
Fig. 2, Fig. 3 are the axonometric chart of the pipe flange with positive stop lug boss in this utility model；
Fig. 4, Fig. 5 are the axonometric chart of the pipe flange with sealed groove in this utility model.
Reference：1. steel pipe A；2. steel pipe B；3. enamel anticorrosion layer；4. the pipe flange with positive stop lug boss（Referred to as " convex
Noodles flange "）；5. the pipe flange with sealed groove（Referred to as " concave surface class flange "）；6. positive stop lug boss；7. sealed groove；8.
Teflon gasket；9. annular heat cavity；10. the connection welding bead of convex surface and concave surface class flange；11. steel pipe B and convex surface
The connection welding bead of class flange；12. steel pipe A and the connection welding bead of concave surface class flange；13. bevel for weldings；14. annular grooves.
Specific embodiment：
This utility model is a kind of anti-corrosion enamel compound pipeline complex pipeline, is formed by connecting by plurality of sections of steel pipes, it is seamless that steel pipe is hot rolling
Pipe, length is 6000-10000mm, and external diameter is 76-426mm, to adapt to the requirements for pipes of different flow.Steel pipe two ends are right respectively
Bump face 4 and concave surface 5 class flange, after surface treatment and heat treatment, inwall integral prefabricated enamel anticorrosion layer 3.Adjacent two ends pair
The steel pipe 1 of weldering class flange 4,5, is attached between 2 by the way of argon arc welding.
For avoiding hot finished steel pipe 1,2 and the class flange 4 with its butt welding and 5 inwall enamel anticorrosion layers 3 that the quick-fried defect of squama occurs, this
Utility model develops the special glaze and the mill addition that are applied to large scale hot finished steel pipe.Wherein, each composition of glaze and its matter
Measuring number is：Quartz sand 35-55 part, Borax 18-23 part, nickel oxide 2-4 part, magnesium oxide 3-5 part, cobalt oxide 3-4 part, sodium nitrate
2-8 part, titanium dioxide 2-6 part, lithium oxide 5-15 part, aluminium oxide 3-4 part, Calcium Carbonate 3-4 part, fluorite 3-5 part, prodan 1-
3 parts, potassium nitrate 0.5-2 part.Mill addition（100 parts of calculating pressed by glaze）Composition is：Tonerde 4-8 part, calcining quartz 11-13
Part, nitrous 0.3-0.5 part, Borax 0.4-0.6 part.
Steel pipe inner wall prefabricated enamel anticorrosion layer technical scheme：
For long-size steel tube, coating quality and anti-corrosion cannot be ensured by traditional handicraft in its inwall prefabricated enamel anticorrosion layer
Performance.For this reason, this utility model adopts the following technical scheme that.
1）Early-stage preparations：Convex surface 4 and concave surface 3 class flange are butt-welded in steel pipe 1,2 two ends respectively, and carry out commissure reason,
Check, and inner surface treatment and heat treatment etc..
2）Glaze slip is prepared：Glaze is prepared according to Glaze Composition, in 1300 DEG C about frit reactions, water Quench obtains cullet shape
Glaze, by itself and mill addition proportioning, and presses（Glaze+mill addition）：Water=（3-4）：Simultaneously ball milling obtains glaze slip for 1 ratio mixing；
3）Glaze slip sprays：Using having cyclone spraying equipment to be atomized glaze slip and be sprayed onto steel pipe 1,2 and the class flange 2 with its butt welding
With 3 inwalls.Therebetween, automatically control steel pipe by oscillating uniform device to wave, rotate the specific surface matter adjusting inwall enamel anticorrosion layer
Amount.
4）Oven drying at low temperature：Using tunnel type continuous furnace（High 7000-11000mm, wide 1230mm, are always about
10000mm）Waste heat carries out oven drying at low temperature to glaze slip.
5）High temperature burns till：The steel pipe of oven drying at low temperature puts formula chain drive system through collection（High 7500-11500mm）Send into tunnel type
In continuous furnace, high temperature burns till and air cooling.
Fastener for connection technical scheme：
As shown in figure 1, the steel pipe 1 of two ends butt welding class flange 4 and 5, it is attached by the way of argon arc welding between 2, right
The concave surface class flange 5 of the convex surface class flange 4 of one steel pipe 2 and another steel pipe 1 carries out butt welding in large end face.Additionally, convex surface class flange 4
Interior processing positive stop lug boss 6, processing annular seal grooves 7 in concave surface class flange 5, L-shaped section, place polytetrafluoro in sealed groove 7
Ethylene pad 8.When convex surface 4 and concave surface 5 class flange welding, positive stop lug boss 6 aligns and compresses teflon gasket 8.Polytetrafluoro
The cross section radially inner side of ethylene pad 8 and enamel anticorrosion layer 3 aligned inside, continuously anti-corrosion to ensure that both cooperatively form
Layer.
Convex surface 4 and concave surface 5 class flange large end face radial outside setting annular groove 14, after class flange 4,5 alignment, two annulars
Groove 14 forms annular heat cavity 9.
For the needs pipeline that turns round, shunt or conflux, can first elbow, threeway or how the ends such as logical to bump
Face 4 or concave surface 5 class flange, and in inner surface integral prefabricated enamel anticorrosion layer 3, described elbow, threeway or how part and the steel such as logical
Pipe 1, after the modes of 2 connections are installation teflon gasket 8 sealed groove 7 in, convex surface class flange 4 and concave surface class flange 5
Connected in large end face by argon arc welding.
Below in conjunction with accompanying drawing, " a kind of anti-corrosion enamel compound pipeline complex pipeline " is manufactured and construction technology illustrates.
1. prefabrication
1）Class flange welding：Convex surface class flange 4 and concave surface class flange 5 are butt-welded in steel pipe 1,2 two ends respectively, clear after welding
Slag simultaneously carries out visual examination of weld and Non-Destructive Testing.
2）Surface treatment and heat treatment：By steel pipe 1,2 heating in medium frequency of two ends butt welding convex surface 4 and concave surface 5 class flange to 800
DEG C, to its oil removing defat and adjust steel pipe tissue.Steel pipe internal-surface is through sandblasting（Ball）Process the Sa3 reaching injection or centrifugal blast cleaning
Level or manual and powertool cleaning St3 level require.
3）Prepared by glaze：By glaze（Mass fraction：Quartz sand 35-55 part, Borax 18-23 part, nickel oxide 2-4 part, oxidation
Magnesium 3-5 part, cobalt oxide 3-4 part, sodium nitrate 2-8 part, titanium dioxide 2-6 part, lithium oxide 5-15 part, aluminium oxide 3-4 part, Calcium Carbonate
3-4 part, fluorite 3-5 part, prodan 1-3 part, potassium nitrate 0.5-2 part）Mix homogeneously, in high temperature furnace（1300 DEG C about）In enter
Row frit reaction, to wire drawing 1-2 section/rice, melt water Quench generates cullet shape glaze.
4）Prepared by glaze slip：By step 3）The glaze generating and mill addition（Quality consists of：100 parts of glaze, tonerde 4-
8 parts, calcining quartz 11-13 part, nitrous 0.3-0.5 part, Borax 0.4-0.6 part）Press with water（3-4）：1 mass ratio mixing, and
Glaze slip is obtained standby after mixture is put into ball mill ball milling 8 hours.
5）Spraying：Using having cyclone spraying equipment by step 4）The glaze slip made is atomized and sprays to steel pipe（1,2）And its two
The class flange 4 of end butt welding and 5 inwalls.Therebetween, by oscillating uniform device automatically control steel pipe wave, rotate adjust inwall enamel prevent
The specific surface quality of rotten layer 3.
6）Oven drying at low temperature：Put formula chain drive system through collection（High 7500-11500mm）Inner surface is sprayed the two ends pair of glaze slip
Tunnel type continuous furnace sent into by the steel pipe 1,2 of weldering class flange 4 and 5（High 7000-11000mm, wide 1230mm, are always about
10000mm）Interior, using firing furnace waste heat, dry 15-25 minute under the conditions of 120-200 DEG C.
7）High temperature burns till：Will be through step 6）The steel pipe 1,2 of the two ends butt welding class flange 4,5 of oven drying at low temperature is put formula chain through collection and is passed
Dynamic system is further fed into tunnel type continuous burnt furnace interior, burns till under 800-900 DEG C of hot conditionss.Wherein, according to steel pipe
Specification is different, and the time that it is walked in tunnel type continuous furnace is about 5-20 minute.
8）Cooling：The class flange 4,5 of steel pipe 1,2 and its two ends butt welding that inwall coats enamel anticorrosion layer 3 is adopted after coming out of the stove
Cooled down with the mode of air cooling.
2. site operation
1）Two ends butt welding convex surface（Fig. 2）And concave surface（Fig. 3）After the enamel multiple tube of class bump joint transports job site to, press
According to construction requirement stringing at the scene.
2）Teflon gasket 8 is placed in the sealed groove 7 of concave surface class flange 5, by convex surface class flange 4 and concave surface
The connecting end surface of class flange 5（Large end face）Relatively, aligned using boil on the nape opposite the mouth machine and compressed, realized sealing；Meanwhile, convex surface 4 He
Annular groove 14 docking in concave surface 5 class flange forms annular heat cavity 9.Company by convex surface class flange 4 and concave surface class flange 5
Contact surface（Large end face）Carry out argon arc welding spot welding to fix, subsequently carry out bottom argon arc welding welding, remove boil on the nape opposite the mouth machine.
3) according to welding process requirement, carry out the methods such as argon arc welding or manual electric arc welding be filled with, cover welding, weldering
Connect, carry out visual examination of weld and Non-Destructive Testing after the completion of scarfing cinder.
4) to the needs pipeline that turns round, shunt or conflux, can be first in the end pair of elbow, threeway or the how part such as logical
Bump face 4 or concave surface 5 class flange, and integrally coat enamel anticorrosion layer 3 in inner surface.Described elbow, threeway or the how part such as logical
After the mode connecting with steel pipe 1,2 is installation teflon gasket 8 sealed groove 7 in, convex surface class flange 4 and concave surface class method
Blue 5 pass through argon arc welding connects in large end face.Detection requires ibid.
The technique effect that this utility model reaches is embodied in：
Add certain fluorite, prodan in glaze, add tonerde, calcining quartz in mill addition it is therefore an objective to eliminate
The quick-fried defect of squama of enamel anticorrosion layer.
Convex surface and concave surface class flange and steel pipe are using being integrally formed coating processes, teflon gasket and enamel anticorrosion layer
It is seamlessly connected it is ensured that the seriality of anticorrosive coat and integrity.The annular heat cavity of convex surface and concave surface class flange can extend weldering
Connect heat conduction distance, effectively reduce the welding impact to enamel anticorrosion layer and teflon gasket for the high temperature, it is to avoid anti-corrosion mistake
Effect.Meanwhile, teflon gasket is located inside class flange large end face interface, and absorbable part welding waste heat simultaneously softens, favorably
In raising airtight quality.Positive stop lug boss and sealed groove advantageously ensure that the accuracy that bump joint positions, and are easy to site operation.
Class bump joint adopts identical material with steel pipe, can be prevented effectively from electrochemical corrosion.
The collection supporting with technical scheme is put formula chain drive system, tunnel type continuous furnace etc. and all can be ensured large scale pipeline
Continuous, the efficient, scale manufacturing of inwall enamel anticorrosion layer.
The above, only this utility model better embodiment, structure of the present utility model and arrangement and method for construction are not done
Pro forma restriction.All according to technical spirit of the present utility model, above technical scheme is made with any pro forma non-intrinsically safe modification,
All belong to technical solutions of the utility model scope.
Claims (5)
1. a kind of anti-corrosion enamel compound pipeline complex pipeline it is characterised in that：This pipeline is by plurality of sections of steel pipes（1、2）Connect composition；Described each section
Steel pipe（1、2）Butt welding carries positive stop lug boss respectively at two ends（6）Convex surface class flange（4）With band sealed groove（7）Concave surface class method
Blue（5）；Described steel pipe（1、2）Inwall has enamel anticorrosion layer（3）；Described steel pipe（1、2）For hot rolled seamless steel tube, length is 6000
～10000mm, external diameter is 76～426mm；Described sealed groove（7）Section is L-shaped.
2. anti-corrosion enamel compound pipeline complex pipeline according to claim 1 it is characterised in that：Described each section steel pipe（1、2）Between company
The mode that connects is convex surface class flange（4）With concave surface class flange（5）Connected in large end face by argon arc welding.
3. anti-corrosion enamel compound pipeline complex pipeline according to claim 1 it is characterised in that：Described convex surface class flange（4）And concave surface
Class flange（5）On all have annular groove（14）；Described annular groove（14）Form annular heat in two species flange docking empty
Chamber（9）；Described positive stop lug boss（6）And sealed groove（7）All it is close to enamel anticorrosion layer（3）.
4. anti-corrosion enamel compound pipeline complex pipeline according to claim 1 it is characterised in that：Described positive stop lug boss（6）Shape and
Sealed groove（7）Match；Described sealed groove（7）Interior installation teflon gasket（8）, and pass through positive stop lug boss（6）Pressure
Tightly, seal；Described teflon gasket（8）The radially inner side of cross section and enamel anticorrosion layer（3）Aligned inside.
5. the anti-corrosion enamel compound pipeline complex pipeline according to any one in claim 1-4 it is characterised in that：Described compound pipeline complex pipeline
Also include elbow, threeway or multiple way union part in the part turned round, shunt or conflux；Described elbow, threeway or lead to more
The butt welding of end parts of pipe joint member has convex surface class flange（4）Or concave surface class flange（5）, inner surface is prefabricated with enamel anticorrosion layer（3）；
Described elbow, threeway or multiple way union part and steel pipe（1、2）The mode connecting is in sealed groove（7）Interior installation polytetrafluoro
Ethylene pad（8）Afterwards, convex surface class flange（4）With concave surface class flange（5）Connected in large end face by argon arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892270.2U CN205938219U (en) | 2016-08-17 | 2016-08-17 | Anti -corrosion enamel composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892270.2U CN205938219U (en) | 2016-08-17 | 2016-08-17 | Anti -corrosion enamel composite pipe |
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| Publication Number | Publication Date |
|---|---|
| CN205938219U true CN205938219U (en) | 2017-02-08 |
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ID=57918002
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620892270.2U Active CN205938219U (en) | 2016-08-17 | 2016-08-17 | Anti -corrosion enamel composite pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230738A (en) * | 2019-06-27 | 2019-09-13 | 北京航天新风机械设备有限责任公司 | A kind of edge joint of suitable high energy beam penetration fustion welding |
-
2016
- 2016-08-17 CN CN201620892270.2U patent/CN205938219U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230738A (en) * | 2019-06-27 | 2019-09-13 | 北京航天新风机械设备有限责任公司 | A kind of edge joint of suitable high energy beam penetration fustion welding |
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