CN106122613B - A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method - Google Patents

A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method Download PDF

Info

Publication number
CN106122613B
CN106122613B CN201610677733.8A CN201610677733A CN106122613B CN 106122613 B CN106122613 B CN 106122613B CN 201610677733 A CN201610677733 A CN 201610677733A CN 106122613 B CN106122613 B CN 106122613B
Authority
CN
China
Prior art keywords
parts
steel pipe
enamel
class flange
glaze
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610677733.8A
Other languages
Chinese (zh)
Other versions
CN106122613A (en
Inventor
洪德胜
毕文军
王克难
苏勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610677733.8A priority Critical patent/CN106122613B/en
Publication of CN106122613A publication Critical patent/CN106122613A/en
Application granted granted Critical
Publication of CN106122613B publication Critical patent/CN106122613B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D11/00—Continuous processes; Apparatus therefor
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • F16L13/0209—Male-female welded joints
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • F16L13/0254—Welded joints the pipes having an internal or external coating
    • F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/14—Coatings characterised by the materials used by ceramic or vitreous materials
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • F16L58/188—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for branching pipes; for joining pipes to walls
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum

Abstract

The invention discloses a kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing methods.The Glaze Composition of use can guarantee the enamel anticorrosion layer scaleless explosion of hot finished steel pipe inner wall.The realization of the certifiable heavy-gauge steel inside pipe wall enamel technology such as formula chain drive system, tunnel type continuous furnace is put with the relevant collection of technical solution and efficient scale manufactures.Integral prefabricated enamel anticorrosion layer, teflon gasket and dependency structure, it is ensured that the continuity and integrality of anticorrosion structure.Be respectively provided with positive stop lug boss, the butt welding pipe flange of sealed groove structure be easy to implement effectively sealing and erosion resistant coating continuity, and be conducive to site operation；Annular heat cavity can make enamel anticorrosion layer and sealing structure from welding the excessive influence of high temperature, and protective system is avoided to fail.

Description

A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method
Technical field
The invention belongs to pipeline corrosion protection field, it is related to manufacture and the construction method of a kind of anti-corrosion enamel compound pipeline complex pipeline.
Background technology
Corrosion is always to cause the industries such as oil, natural gas pipeline damage and the first cause of failure.
Currently, both at home and abroad for the coating of pipeline corrosion protection based on organic coating, such as pitch, coal tar enamel, clinkering ring Oxygen powder etc..Although people still in the organic coating of constantly research and development more excellent performance, cannot fundamentally solve it Intrinsic easy to aging and temperature tender subject, anti-corrosion life are extremely restricted.
Inorganic non-metallic material is excellent with its physical and chemical properties stabilization, not aging, anti-corrosion, wear-resisting, heatproof, resistance reducing performance It is different it is equal gradually cause pipeline corrosion protection insider's note that countries in the world using inorganic non-metallic composite anti-corrosive pipeline as again Point brainstorm subject.Pertinent literature is shown, from phase late 1970s, some scholars attempt to use ceramics 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 Technology restriction is not applied on a large scale yet in China.
Currently, the technical barrier of limitation inorganic silicate coating sizable application includes mainly：Steel for pipe is hot-rolled steel, Its with easily there is scale explosion after silicate paint high temperature sintering, and coating and anti-corrosion is caused to fail；Steel pipe inner wall enamel/glass Technique is restricted by steel pipe sizes, and Large Diameter Long Pipes road inner wall enamel technology is still immature；The continuity of erosion resistant coating when pipeline welds It is difficult to ensure with integrality.The present invention solves the problems, such as three above from Glaze Composition, pipeline manufacture and construction technology etc., Great influence will be brought to the pipeline corrosion protection in the fields such as the energy, Urban Buried Pipeline Network, military project.
Invention content
Goal of the invention：The purpose of the present invention is using enamel anticorrosion layer, thoroughly solve organic in current pipeline corrosion protection field The problems such as physicochemical properties of coating are unstable, easy to aging, weatherability is poor, and realize that the hot-rolled steel of enamel anticorrosion layer is applicable in Property, integrality, large scale and automatic high-efficiency manufacture, promote enamel anticorrosion layer heavy industrialization application.
Technical solution：
A kind of anti-corrosion enamel compound pipeline complex pipeline, it is characterised in that：The pipeline is made of plurality of sections of steel pipes connection；Each section steel pipe Distinguish convex surface class flange of the butt welding with positive stop lug boss and the concave surface class flange with sealed groove in both ends；The steel pipe inner wall is warded off Porcelain erosion resistant coating；The steel pipe is hot rolled seamless steel tube, and length is 6000~10000mm, and outer diameter is 76~426mm；The sealing Groove section is L-shaped.
Connection type between each section steel pipe is that convex surface class flange and concave surface class flange are connected by argon arc welding in large end face It connects.
There is annular groove on the convex surface class flange and concave surface class flange；The annular groove is when two kinds of flanges dock Form annular heat cavity；The positive stop lug boss and sealed groove are close to enamel anticorrosion layer.
The shape and sealed groove of the positive stop lug boss match；Teflon gasket is installed in the sealed groove, And it is compressed by positive stop lug boss, sealing；The radially inner side of the teflon gasket cross section and enamel anticorrosion layer inside are right Together.
The compound pipeline complex pipeline further includes having elbow, threeway or multiple way union component in the part of turn, shunting or confluence； The butt welding of end parts of the elbow, threeway or multiple way union component has convex surface class flange or concave surface class flange, inner surface to be prefabricated with Enamel anticorrosion layer；The elbow, threeway or multiple way union component and steel pipe（1,2）The mode of connection is in sealed groove（7） Interior installation teflon gasket（8）Afterwards, convex surface class flange（4）With concave surface class flange（5）It is connected in large end face by argon arc welding.
The Glaze Composition of the enamel anticorrosion layer and each composition quality number are respectively：
35-55 parts of quartz sand, 18-23 parts of borax, 2-4 parts of nickel oxide, 3-5 parts of magnesia, 3-4 parts of cobalt oxide, sodium nitrate 2-8 parts, 2-6 parts of titanium dioxide, 5-15 parts of lithia, 3-4 parts of aluminium oxide, 3-4 parts of calcium carbonate, 3-5 parts of fluorite, prodan 1- 3 parts, 0.5-2 parts of potassium nitrate；
The mill addition added in every 100 parts of glaze is：4-8 parts of tonerde, 11-13 parts of calcining quartz, nitrous 0.3-0.5 Part, 0.4-0.6 parts of borax.
A kind of manufacturing method of anti-corrosion enamel compound pipeline complex pipeline as described above, it is characterised in that this method includes：
1）Distinguish butt welding convex surface class flange and concave surface class flange at steel pipe both ends；Using heating in medium frequency to 800 DEG C, to steel pipe It carries out oil removing degreasing and adjusts steel pipe tissue.
2）It is prepared by glaze slip：According in claim 6 at preparation glaze is grouped as, in 1300 DEG C or so frit reactions, water Quench obtains cullet shape glaze, itself and the mill addition in claim 6 are matched, pressed（Glaze+mill addition）：Water=（3- 4）：Simultaneously ball milling obtains glaze slip for 1 ratio mixing.
3）Using there is cyclone spraying equipment that glaze slip is atomized to and is sprayed onto steel pipe and its class flange inner wall of both ends butt welding, pass through control Make its wave, rotation mode adjustment enamel anticorrosion layer specific surface quality.
4）Using tunnel type continuous furnace（High 7000-11000mm, wide 1230mm, is always about 10000mm）, to spraying The steel pipe of the both ends butt welding class flange of glaze slip carries out low temperature drying（120-200 DEG C, 15-25 minutes）, high temperature（800-900℃）It burns At.Wherein, different according to steel pipe specification, collection is hung on by hook and puts formula chain drive system（High 7500-11500mm）Steel Pipe, the time walked in tunnel type continuous furnace is about to differ for 5-20 minutes.
5）The type of cooling is air-cooled.
Advantage and effect：The present invention is added certain fluorite, prodan in glaze, be added in mill addition tonerde, Calcining quartz, it is therefore an objective to eliminate the scale explosion of enamel anticorrosion layer.Meanwhile it ensure that the continuity of erosion resistant coating in connection structure And integrality, influence of the welding high temperature to enamel anticorrosion layer and teflon gasket is effectively reduced, anti-corrosion is avoided to fail；Just In site operation.Class bump joint and steel pipe use identical material, can effectively avoid electrochemical corrosion.
Description of the drawings：
Fig. 1 is the general profile figure after the fastener for connection of both ends butt welding pipe flange in the present invention；
Fig. 2, Fig. 3 are the stereogram of the pipe flange with positive stop lug boss in the present invention；
Fig. 4, Fig. 5 are the stereogram of the pipe flange with sealed groove in the present invention.
Reference numeral：1. steel pipe A；2. steel pipe B；3. enamel anticorrosion layer；4. the pipe flange with positive stop lug boss（It is 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 on convex surface and concave surface class flange；11. steel pipe B and convex surface The connection welding bead of class flange；12. the connection welding bead of steel pipe A and concave surface class flange；13. welding groove；14. annular groove.
Specific implementation mode：
The present invention is a kind of anti-corrosion enamel compound pipeline complex pipeline, is formed by connecting by plurality of sections of steel pipes, and steel pipe is hot seamless tube, long Degree is 6000-10000mm, outer diameter 76-426mm, to adapt to the requirements for pipes of different flow.Distinguish butt welding convex surface in steel pipe both ends 4 and 5 class flange of concave surface, after surface treatment and heat treatment, the integral prefabricated enamel anticorrosion layer of inner wall 3.Adjacent both ends butt welding class method It is attached by the way of argon arc welding between the steel pipe 1,2 of orchid 4,5.
To avoid hot finished steel pipe 1,2 and scale explosion occur with the class flange 4 of its butt welding and 5 inner wall enamel anticorrosion layers 3, this Invention develops dedicated glaze and mill addition suitable for large scale hot finished steel pipe.Wherein, each ingredient of glaze and its mass parts Number is：35-55 parts of quartz sand, 18-23 parts of borax, 2-4 parts of nickel oxide, 3-5 parts of magnesia, 3-4 parts of cobalt oxide, sodium nitrate 2-8 Part, 2-6 parts of titanium dioxide, 5-15 parts of lithia, 3-4 parts of aluminium oxide, 3-4 parts of calcium carbonate, 3-5 parts of fluorite, prodan 1-3 Part, 0.5-2 parts of potassium nitrate.Mill addition（Glaze is by 100 parts of calculating）Ingredient is：4-8 parts of tonerde, 11-13 parts of calcining quartz, 0.3-0.5 parts of nitrous, 0.4-0.6 parts of borax.
The prefabricated enamel anticorrosion layer technical solution of steel pipe inner wall：
For long-size steel tube, it can not ensure coating quality and anti-corrosion in the prefabricated enamel anticorrosion layer of its inner wall by traditional handicraft Performance.For this purpose, the present invention adopts the following technical scheme that.
1）Early-stage preparations：Convex surface 4 and 3 class flange of concave surface are butt-welded in 1,2 both ends of steel pipe respectively, and carry out commissure reason, Inspection and inner surface treatment and heat treatment etc.；
2）Glaze slip is prepared：Glaze is prepared according to Glaze Composition, in 1300 DEG C or so frit reactions, water Quench obtains cullet shape Itself and mill addition are matched, and pressed by glaze（Glaze+mill addition）：Water=（3-4）：Simultaneously ball milling obtains glaze slip for 1 ratio mixing；
3）Glaze slip sprays：Using there is cyclone spraying equipment to be atomized glaze slip and be sprayed onto steel pipe 1,2 and with the class flange 2 of its butt welding With 3 inner walls.Therebetween, steel pipe is automatically controlled by oscillating uniform device to wave, rotate to adjust the specific surface matter of inner wall enamel anticorrosion layer Amount；
4）Low temperature drying：Using tunnel type continuous furnace（High 7000-11000mm, wide 1230mm, is always about 10000mm）Waste heat carries out low temperature drying to glaze slip；
5）High temperature firing：The steel pipe of low temperature drying puts formula chain drive system through collection（High 7500-11500mm）It is sent into tunnel type In continuous furnace, high temperature firing is simultaneously air-cooled.
Fastener for connection technical solution：
As shown in Figure 1, be attached by the way of argon arc welding between the steel pipe 1,2 of both ends butt welding class flange 4 and 5, it is right The convex surface class flange 4 of one steel pipe 2 and the concave surface class flange 5 of another steel pipe 1 carry out butt welding in large end face.In addition, convex surface class flange 4 Interior processing positive stop lug boss 6, concave surface class flange 5 is interior to process annular seal grooves 7, and L-shaped section, sealed groove 7 is interior to place polytetrafluoro Ethylene gasket 8.When 5 class flange welding of convex surface 4 and concave surface, positive stop lug boss 6 is aligned and compresses teflon gasket 8.Polytetrafluoro The cross section radially inner side of ethylene gasket 8 and 3 aligned inside of enamel anticorrosion layer, to ensure that the two cooperatively forms continuous anti-corrosion Layer.
Annular groove 14 is arranged in convex surface 4 and 5 class flange large end face radial outside of concave surface, after class flange 4,5 is aligned, two annulars Groove 14 forms annular heat cavity 9.
It, can be first in elbow, threeway or mostly logical etc. ends to bump for the pipeline for needing to turn round, shunt or converge 5 class flange of face 4 or concave surface, and in the prefabricated enamel anticorrosion layer of interior entire surface 3；The elbow, threeway or mostly logical etc. components and steel The mode that pipe 1,2 connects is convex surface class flange 4 and concave surface class flange 5 in sealed groove 7 after installation teflon gasket 8 It is connected in large end face by argon arc welding.
" a kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method " is illustrated below in conjunction with attached drawing.
1. prefabrication
1）Class flange welding：Convex surface class flange 4 and concave surface class flange 5 are butt-welded in 1,2 both ends of steel pipe respectively, it is clear after welding Slag simultaneously carries out visual examination of weld and non-destructive testing.
2）Surface treatment and heat treatment：By 1,2 heating in medium frequency of steel pipe of 5 class flange of both ends butt welding convex surface 4 and concave surface to 800 DEG C, to its oil removing degreasing and adjust steel pipe tissue.Steel pipe internal-surface is through sandblasting（Ball）Processing reaches the Sa3 of injection or centrifugal blast cleaning Grade is required with the St3 grades of powertool cleaning by hand.
3）It is prepared by glaze：By glaze（Mass fraction：35-55 parts of quartz sand, 18-23 parts of borax, 2-4 parts of nickel oxide, oxidation 3-5 parts of magnesium, 3-4 parts of cobalt oxide, 2-8 parts of sodium nitrate, 2-6 parts of titanium dioxide, 5-15 parts of lithia, 3-4 parts of aluminium oxide, calcium carbonate 3-4 parts, 3-5 parts of fluorite, 1-3 parts of prodan, 0.5-2 parts of potassium nitrate）It is uniformly mixed, in high temperature furnace（1300 DEG C or so）In into Melt water Quench is generated cullet shape glaze by row frit reaction to wire drawing 1-2 sections/rice.
4）It is prepared by glaze slip：By step 3）The glaze and mill addition of generation（Quality group becomes：100 parts of glaze, tonerde 4- 8 parts, 11-13 parts of calcining quartz, 0.3-0.5 parts of nitrous, 0.4-0.6 parts of borax）It is pressed with water（3-4）：1 mass ratio mixing, and It is spare that glaze slip is obtained after mixture is put into ball mill ball milling 8 hours.
5）Spraying：Using having cyclone spraying equipment by step 4）Manufactured glaze slip is atomized and sprays to steel pipe（1,2）And its two Hold the class flange 4 and 5 inner walls of butt welding.Therebetween, by oscillating uniform device automatically control steel pipe wave, rotate it is anti-to adjust inner wall enamel The specific surface quality of rotten layer 3.
6）Low temperature drying：Formula chain drive system is put through collection（High 7500-11500mm）Inner surface is sprayed to the both ends pair of glaze slip The steel pipe 1,2 for welding class flange 4 and 5 is sent into tunnel type continuous furnace（High 7000-11000mm, wide 1230mm, is always about 10000mm）It is interior, using firing furnace waste heat, dried 15-25 minutes under the conditions of 120-200 DEG C.
7）High temperature firing：It will be through step 6）The steel pipe 1,2 of the both ends butt welding class flange 4,5 of low temperature drying is put formula chain through collection and is passed Dynamic system is further fed into tunnel type continuous burnt furnace interior, is burnt under 800-900 DEG C of hot conditions.Wherein, according to steel pipe Specification is different, and the time walked in tunnel type continuous furnace is about to differ for 5-20 minutes.
8）It is cooling：The steel pipe 1,2 of inner wall coating enamel anticorrosion layer 3 and its class flange 4,5 of both ends butt welding are adopted after coming out of the stove It is cooled down with air-cooled mode.
2. site operation
1）Both ends butt welding convex surface（Fig. 2）The concave surface and（Fig. 3）After the enamel multiple tube of class bump joint transports construction 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, using counterpart machine by it to just and compressing, realize sealing；Meanwhile 4 He of convex surface The docking of annular groove 14 in 5 class flange of concave surface forms annular heat cavity 9.By the company of convex surface class flange 4 and concave surface class flange 5 Contact surface（Large end face）It carries out argon arc welding spot welding to fix, then carries out bottom argon arc welding welding, remove counterpart machine.
3) according to welding process requirement, carry out the methods of argon arc welding or manual electric arc welding be filled, cover welding, weldering It connects, carry out visual examination of weld and non-destructive testing after the completion of scarfing cinder.
It 4), can be first in the end pair of elbow, threeway or mostly logical etc. components to the pipeline for needing to turn round, shunt or converge 5 class flange of bump face 4 or concave surface, and in interior entire surface coating enamel anticorrosion layer 3.The elbow, threeway or mostly logical etc. components It is convex surface class flange 4 and concave surface class method in sealed groove 7 after installation teflon gasket 8 with the mode that steel pipe 1,2 connects Orchid 5 is connected by argon arc welding in large end face.Testing requirements are same as above.
The technique effect that the present invention reaches is embodied in：
Certain fluorite, prodan are added in glaze, tonerde, calcining quartz is added in mill addition, it is therefore an objective to eliminate The scale explosion of enamel anticorrosion layer.
Convex surface and concave surface class flange are used with steel pipe is integrally formed coating processes, teflon gasket and enamel anticorrosion layer It is seamlessly connected, ensure that the continuity and integrality of erosion resistant coating.The annular heat cavity of convex surface and concave surface class flange can extend weldering Heat conduction distance is connect, influence of the welding high temperature to enamel anticorrosion layer and teflon gasket is effectively reduced, anti-corrosion is avoided to lose Effect.Meanwhile teflon gasket is located on the inside of class flange large end face interface, absorbable part welding waste heat simultaneously softens, favorably In raising airtight quality.Positive stop lug boss and sealed groove advantageously ensure that the accuracy of bump joint positioning, are convenient for site operation. Class bump joint and steel pipe use identical material, can effectively avoid electrochemical corrosion.
Mating collection puts formula chain drive system, tunnel type continuous furnace etc. and can guarantee large scale pipeline with technical solution Continuous, the efficient, scale manufacturing of inner wall enamel anticorrosion layer.
The above, better embodiment only of the present invention, the structure to the present invention and arrangement and method for construction are not done formal Limitation.All technical spirits according to the present invention are made non-intrinsically safe in any form to above technical scheme and are changed, belong to skill of the present invention Art aspects.

Claims (6)

1. a kind of anti-corrosion enamel compound pipeline complex pipeline, it is characterised in that：The pipeline is by plurality of sections of steel pipes（1、2）Connection composition；Each section Steel pipe（1、2）Distinguish butt welding and carry positive stop lug boss in both ends（6）Convex surface class flange（4）With band sealed groove（7）Concave surface class method It is blue（5）；The steel pipe（1、2）Inner wall has enamel anticorrosion layer（3）；The steel pipe（1、2）For hot rolled seamless steel tube, length 6000 ~10000mm, outer diameter are 76~426mm；The sealed groove（7）Section is L-shaped；
The enamel anticorrosion layer（3）Glaze Composition and each composition quality number be respectively：
35-55 parts of quartz sand, 18-23 parts of borax, 2-4 parts of nickel oxide, 3-5 parts of magnesia, 3-4 parts of cobalt oxide, sodium nitrate 2-8 Part, 2-6 parts of titanium dioxide, 5-15 parts of lithia, 3-4 parts of aluminium oxide, 3-4 parts of calcium carbonate, 3-5 parts of fluorite, prodan 1-3 Part, 0.5-2 parts of potassium nitrate；
The mill addition added in every 100 parts of glaze is：4-8 parts of tonerde, 11-13 parts of calcining quartz, 0.3-0.5 parts of nitrous, 0.4-0.6 parts of borax.
2. anti-corrosion enamel compound pipeline complex pipeline according to claim 1, it is characterised in that：Each section steel pipe（1、2）Between company It is convex surface class flange to connect mode（4）With concave surface class flange（5）It is 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：The convex surface class flange（4）The concave surface and Class flange（5）On have annular groove（14）；The annular groove（14）It is empty that annular heat is formed when two type flanges dock Chamber（9）；The positive stop lug boss（6）And sealed groove（7）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：The positive stop lug boss（6）Shape and Sealed groove（7）It matches；The sealed groove（7）Interior installation teflon gasket（8）, and pass through positive stop lug boss（6）Pressure Tightly, it seals；The 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 of claim 1-4, it is characterised in that：The compound pipeline complex pipeline Further include having elbow, threeway or multiple way union component in the part of turn, shunting or confluence；The elbow, threeway or mostly logical 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）； The elbow, threeway or multiple way union component and steel pipe（1,2）The mode of connection is in sealed groove（7）Interior installation polytetrafluoro Ethylene gasket（8）Afterwards, convex surface class flange（4）With concave surface class flange（5）It is connected in large end face by argon arc welding.
6. a kind of manufacturing method of anti-corrosion enamel compound pipeline complex pipeline as described in claim 1, it is characterised in that this method includes：
1）In steel pipe（1,2）Distinguish butt welding convex surface class flange in both ends（4）With concave surface class flange（5）；Using heating in medium frequency to 800 DEG C, oil removing degreasing is carried out to steel pipe and adjusts steel pipe tissue；
2）It is prepared by glaze slip：According in claim 1 at preparation glaze is grouped as, in 1300 DEG C or so frit reactions, water Quench Cullet shape glaze is obtained, itself and the mill addition proportioning in claim 1 are pressed（Glaze+mill addition）：Water=（3-4）：1 Simultaneously ball milling obtains glaze slip for ratio mixing；
3）Using thering is cyclone spraying equipment to be atomized glaze slip and be sprayed onto steel pipe（1,2）And its class flange of both ends butt welding（4,5）Inner wall, It is waved by controlling it, rotation mode adjustment enamel anticorrosion layer（3）Specific surface quality；
4）Using tunnel type continuous furnace, to spraying the both ends butt welding class flange of glaze slip（4,5）Steel pipe carry out 120-200 DEG C Drying, drying time 15-25 minutes, with 800-900 DEG C be burnt into；Wherein, different according to steel pipe specification, it is hung on by hook Collection puts the steel pipe of formula chain drive system, and the time walked in tunnel type continuous furnace is 5-20 minutes；
The tunnel type continuous furnace size is high 7000-11000mm, wide 1230mm, overall length 10000mm；
The collection puts the high 7500-11500mm of formula chain drive system；
5）The type of cooling is air-cooled.
CN201610677733.8A 2016-08-17 2016-08-17 A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method Active CN106122613B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610677733.8A CN106122613B (en) 2016-08-17 2016-08-17 A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610677733.8A CN106122613B (en) 2016-08-17 2016-08-17 A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method

Publications (2)

Publication Number Publication Date
CN106122613A CN106122613A (en) 2016-11-16
CN106122613B true CN106122613B (en) 2018-08-10

Family

ID=57279740

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610677733.8A Active CN106122613B (en) 2016-08-17 2016-08-17 A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method

Country Status (1)

Country Link
CN (1) CN106122613B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106369233A (en) * 2016-11-24 2017-02-01 攀枝花市旭鼎机械制造有限公司 Pipeline connector structure with linings capable of being dismounted and replaced
CN106402523A (en) * 2016-11-25 2017-02-15 攀枝花市旭鼎机械制造有限公司 Joint structure with lining pipes
CN108249762A (en) * 2018-03-23 2018-07-06 深圳市金合联供应链技术有限公司 A kind of grate high acid-proof cast iron Enamel Slip and preparation method thereof
CN108821587B (en) * 2018-08-14 2021-10-15 南京双峰油泵油嘴有限公司 Formula and process of industrial enamel for cast iron
CN111116184A (en) * 2019-12-30 2020-05-08 常州市昊天管道成套有限公司 Oil-resistant steel pipe and manufacturing process thereof
US11725755B2 (en) * 2020-10-29 2023-08-15 United Pipeline Systems, Inc. Connections of lined pipe
CN114484097B (en) * 2022-04-18 2022-07-01 江苏永占管道科技有限公司 Heat preservation type metal pipeline

Also Published As

Publication number Publication date
CN106122613A (en) 2016-11-16

Similar Documents

Publication Publication Date Title
CN106122613B (en) A kind of anti-corrosion enamel compound pipeline complex pipeline and its manufacturing method
CN113548814B (en) Environment-friendly baking process, environment-friendly baking kiln tube and environment-friendly baking shaft kiln
CN103056515A (en) Welding process for transporting alpha type aluminum oxide ceramic lining by oil and gas pipeline
CN204438753U (en) Inner liner of rotary kiln structure
CN109850901B (en) Full-automatic push boat type carbonization furnace for producing superfine tungsten carbide powder
CN108331977A (en) Heating pipeline ductile iron pipe, its preparation process and application
WO2015149342A1 (en) New glass-linked reactor and manufacturing method thereof
CN205938219U (en) Anti -corrosion enamel composite pipe
CN106735728A (en) A kind of connection method of ceramic-lined composite steel tube
CN201314781Y (en) Lining of rotary kiln and secondary air port structure thereof
CN111575629A (en) Anti-corrosion composite layer, application and preparation method of anti-corrosion composite lining layer
WO2017045319A1 (en) Large microcrystalline glass-lined pipe and manufacturing method therefor
CN101608864B (en) Carbon-calcining rotary kiln lining and second tuyere structure thereof
CN104588964A (en) Dissimilar metal tube material and preparation method and application thereof
CN111496357A (en) Transverse welding method for BB41-BF hot blast furnace shell
CN105562891B (en) Tear down and build natural gas steam reformer boiler tube construction method in strange land
CN108947252B (en) Wear-resistant ceramic pipeline with integrated structure and preparation method thereof
CN110527771A (en) A kind of blast funnace hot blast stove flue flange connection position explosion processing method
CN106969375B (en) A kind of boiler vortex burner aditus laryngis flame retardant coating building construction method
CN208238519U (en) A kind of rotary kiln that resistance to harmful element corrodes
CN207864616U (en) Prebaked anode roaster furnace seal washer and sealing structure
CN219541621U (en) Gas forging heating furnace
CN109432971A (en) A kind of drying tower tower body
CN216764783U (en) Novel bridge pipe for coke oven
CN202203922U (en) Easily-welded boiler tube

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant