CN206139380U - Large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm - Google Patents
Large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm Download PDFInfo
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- CN206139380U CN206139380U CN201621002160.0U CN201621002160U CN206139380U CN 206139380 U CN206139380 U CN 206139380U CN 201621002160 U CN201621002160 U CN 201621002160U CN 206139380 U CN206139380 U CN 206139380U
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Abstract
The utility model discloses a large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm belongs to the anticorrosive technical field of steel pipe. The utility model discloses an outer shotblaster, intermediate -frequency heating furnace, FBE powder spraying system, AD glue extruder, PEPP extruder, interior shotblaster, interior flush coater and are used for conveying the transfer roller of steel pipe. Two intermediate -frequency heating furnace s of intermediate -frequency heating furnace for concatenating, the intermediate frequency heating temperature set for of two intermediate -frequency heating furnace the same. The transfer roller has the cornerite of being carried by the axial when being used for the steel pipe rotatory, the cornerite is the axis direction of transfer roller and the contained angle between the steel pipe transmission direction, the cornerite is 60~70, important adjustment shelves apart from 1400mm between the transfer roller. The utility model discloses satisfy anticorrosive production demand in large -diameter steel pipe 3PE3PP outer anti -corrosion more than the DN1400mm, the epoxy.
Description
Technical field
The utility model belongs to steel pipe corrosion-proof technical field, and in particular to a kind of more than DN1400mm large-diameter steel pipes inside and outside wall
Anticorrosion production line.
Background technology
Steel pipe has obtained widely should as a kind of traditional conveyance conduit in fields such as oil transportation, gas transmission, water delivery, blowdowns
With, steel pipe corrosion-proof technology also fast development therewith, using it is more be exactly outer wall of steel pipe using 3PE/3PP anti-corrosions, inwall is adopted
Epoxy anticorrosion.3PE/3PP anti-corrosions are made up of three-decker：Ground floor epoxy powder（FBE≥120um）, second layer adhesive
（AD）170～250um, third layer polyethylene（PE）Or polypropylene（PP）2.5～3.7mm, third layer for polyethylene be 3PE prevent
Corruption, third layer is polyacrylic for 3PP anti-corrosions.Three kinds of materials combine together, and form excellent anti-corrosion with steel pipe strong bonded
Layer, by the high permeability resistant and chemical-resistant characteristic of clinkery epoxy powder, with mechanical protection properties of extruding polyethylene coating, weather-proof
Property combine, once production shaping, can be rated as " perfect coating ".3PE/3PP anti-corrosions are with its corrosion resistance and good, mechanical property
The high-quality characteristics such as good, the good, long service life of high and low temperature resistance have been popularized in transportation pipe field, production technology
Reach its maturity.
But due to the high pressure characteristics of transportation pipe, caliber is in below DN1400mm；The static pressure lines such as water delivery, blowdown
Field is progressively developed due to the needs of engineering construction to heavy caliber direction, and caliber is in the majority with DN1400～DN2600mm, and anti-corrosion
Mode mostly is the tradition anti-corrosion mode such as epoxide coal bituminous anti-corrosion, epoxy coating anti-corrosion, and this anticorrosive coat quality is wayward, quality
It is more crisp, intolerant to colliding with and impact, easily occur that pin hole bubble, weatherability be poor, service life is short, and environmental pollution is serious.It is right at present
Prevent outside the low-pressure fluid conveyance conduit such as bigbore water delivery, blowdown, the large-diameter steel pipe 3PE/3PP also without complete set
Antisepsis production line in rotten, epoxy.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, there is provided a kind of DN1400mm with
Upper big mouth footpath steel pipe inside and outside wall anticorrosion production line, meets in the outer anti-corrosions of more than DN1400mm large-diameter steel pipes 3PE/3PP, epoxy
Anti-corrosion Production requirement.
To solve above-mentioned technical problem, the utility model is adopted the technical scheme that：A kind of more than DN1400mm heavy calibers
Steel pipe inside and outside wall anticorrosion production line, including outer ballasting rust remover, intermediate-frequency heating furnace, FBE powder spraying systems, AD glue extrusion
Machine, PE/PP extruders, interior ballasting rust remover, interior flush coater and the transfer roller for transmitting steel pipe；It is characterized in that：In described
Frequency heating furnace is concatenation and two intermediate-frequency heating furnaces of design temperature identical；While the transfer roller has for steel pipe rotary
The cornerite for axially being conveyed, the cornerite is the angle between the axis direction and steel pipe transmission direction of transfer roller；The cornerite
Maximum adjustment span 1400mm for 60～70 °, between transfer roller.
Preferably, the caliber of the steel pipe is DN1400mm～2600mm.
Preferably, more than DN1400mm large-diameter steel pipe inside and outside wall anticorrosions production line is also included at preheating furnace, micronic dust
Reason system, the water for lowering the temperature after outer wall of steel pipe anti-corrosion coating drench cooling room, the pipe end for being ground pipe end PE anticorrosive coats and are ground
Machine, online electric spark leak source detecting system, curing oven；The preheating furnace for carrying out drying the pre-heat treatment to steel pipe is arranged on
Before the outer ballasting rust remover；The water drenches cooling room and is arranged on after the PE/PP extruders, and the pipe end milling drum sets
Put after water drenches cooling room, the online electric spark leak source detecting system for detecting external anti-corrosion layer leak source is arranged on pipe end
Between milling drum and interior ballasting rust remover.
Preferably, more than DN1400mm large-diameter steel pipe inside and outside wall anticorrosion production lines are additionally included in after curing oven and set
Put it is inside and outside to steel pipe carry out spray mark auto-Printing device people.
Preferably, the preheating furnace, the transfer roller, the outer ballasting rust remover, the micronic dust processing system, described
Intermediate-frequency heating furnace, the FBE powder spraying systems, the AD rubber extruding machines, the PE/PP extruders, the water drench cooling room,
It is the pipe end milling drum, the online electric spark leak source detecting system, the interior ballasting rust remover, the interior flush coater, described
Curing oven and the auto-Printing device people arrange into " Z " font or " oneself " font.
It is using the beneficial effect produced by above-mentioned technical proposal：The utility model is provided inside and outside a kind of large-diameter steel pipe
Wall anticorrosion production line, meets anti-corrosion Production requirement in the outer anti-corrosions of large-diameter steel pipe 3PE/3PP, epoxy；And at preheating furnace, micronic dust
Reason system, water pouring cooling room, pipe end milling drum, online electric spark leak source detecting system, the setting of curing oven then allow production line more
For reasonable, for processing quality preferably guarantee is provided；Two intermediate-frequency heating furnaces for setting mutually synthermal concatenation make large-scale steel pipe liter
Temperature is more rapid, improve production efficiency；Apparatus for production line has then saved big into " Z " font or the arrangement of " oneself " font for workshop arrangement
Quantity space.
Description of the drawings
Fig. 1 is a kind of schematic diagram of the utility model Production Line Configured embodiment.
In figure：1st, preheating furnace；2nd, transfer roller；3rd, outer ballasting rust remover；4th, micronic dust processing system；5th, intermediate-frequency heating furnace；6、
FBE powder spraying systems；7th, AD rubber extruding machines；8th, PE/PP extruders；9th, water drenches cooling room；10th, pipe end milling drum；11st, it is online
Electric spark leak source detecting system；12nd, interior ballasting rust remover；13rd, interior flush coater；14th, curing oven；15th, auto-Printing device people.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to the utility model.It should be appreciated that concrete reality described herein
Example is applied only to explain the utility model, be not used to limit the utility model.
The present embodiment production line at least includes outer ballasting rust remover 3, intermediate-frequency heating furnace 5, FBE powder spraying systems 6, AD glue
Extruder 7, PE/PP extruders 8, interior ballasting rust remover 12, interior flush coater 13 and the transfer roller 2 for transmitting steel pipe；In described
Frequency heating furnace 5 is concatenation and two intermediate-frequency heating furnaces 5 of design temperature identical；The transfer roller 2 has for steel pipe rotary
The cornerite for axially being conveyed simultaneously, the cornerite is the angle between the axis direction and steel pipe transmission direction of transfer roller 2；Wherein
60～70 ° of the cornerite of transfer roller 2, two transfer rollers 2 are kept off away from adjustable, maximum adjustment span 1400mm, and this gear is away from referring in steel pipe
The distance between two transfer rollers 2 of radial direction.Away from too big, such as more than 1400mm, then the steel pipe of DN1400mm can leak down gear,
Gear can cause being rotationally advancing for steel pipe unstable away from too little, easily fall production line.
Preferably, the caliber of the steel pipe is DN1400mm～2600mm.
Preferably, the present embodiment is also including preheating furnace 1, micronic dust processing system 4, for drop after outer wall of steel pipe anti-corrosion coating
Temperature water drench cooling room 9, the pipe end milling drum 10 for being ground pipe end PE anticorrosive coats, online electric spark leak source detecting system 11,
Curing oven 14；The preheating furnace 1 for carrying out drying the pre-heat treatment to steel pipe is arranged on before the outer ballasting rust remover 3；
The water drenches cooling room 9 and is arranged on after the PE/PP extruders 8, the pipe end milling drum 10 be arranged on water drench cooling room 9 it
Afterwards, the online electric spark leak source detecting system 11 for detecting external anti-corrosion layer leak source is arranged on pipe end milling drum 10 with interior throwing
Between ball rust remover 12.
Preferably, the present embodiment is additionally included in the inside and outside to steel pipe of setting after curing oven 14 carries out the spray automatically of spray mark
Scalar robot 15, auto-Printing device people 15 is arranged in the present embodiment, makes production line more complete.
As shown in figure 1, preferably, to obtain more preferable steel pipe corrosion-proof quality, the preferable life of the utility model embodiment
Producing line and its technique are as follows：
（1）The pre-heat treatment：Steel tube surface carries out drying the pre-heat treatment using preheating furnace 1 when moist to steel pipe, general to adopt
The form of flame heating.
（2）Outer surface process：Using outer ballasting rust remover 3, using the steel sand, shot that mix by a certain percentage, using throwing
（Spray）The mode penetrated carries out processing of rust removing, and if necessary preheating furnace is first suitable for before impeller blasting carries out drying the pre-heat treatment, it is ensured that steel
Higher than more than 3 DEG C of dew-point temperature, impeller blasting speed is 1.2～1.5m/min to pipe surface temperature.Derusting should reach GB/T
Sa2.5 levels specified in 8923, anchor line degree reaches 50～90 μm, surface anchor line degree and cleannes after the assay was approved, into next
Operation.Outer ballasting rust remover shot blast room internal diameter Φ 2800mm, are suitable for maximum specification caliber Φ 2600mm.
（3）Micronic dust process：Using micronic dust processing system 4, steel tube surface dust is cleaned using hairbrush, and will by deduster
Dirt absorption is removed.
（4）Heating in medium frequency：Steel tube surface is heated using 2 × 1000KW intermediate-frequency heating furnaces 5, is selected according to pipe diameter size
The intermediate frequency coil of dimension is selected, maximum specification Φ 2700mm is suitable for maximum steel pipe specification Φ 2600mm, makes steel tube surface temperature
205 ± 25 DEG C are reached, voltage of intermediate frequency 750V.Heating in medium frequency temperature is controlled by infrared temperature measurement apparatus.Preferably, this step
Double heating institute is carried out to steel pipe using two identical intermediate-frequency heating furnaces 5, the intermediate frequency of the setting of two intermediate-frequency heating furnace 5 stated adds
Hot temperature is identical, is all 205 ± 25 DEG C.
（5）Epoxy powder（FBE）Spraying：Using FBE electrostatic coating systems 6, by the way of high pressure electrostatic painting, use
6 to 8 spray guns are sprayed into epoxy powder the steel tube surface after heating.Stainless steel spray room internal diameter Φ 2800mm, are suitable for maximum rule
Lattice caliber Φ 2600mm, 6～7bar of spray pressure, it is every that rifle injection flow is arranged on 36～43.2g/min, dedusting fan power
30kW。
（6）Adhesive（AD）And polyethylene（PE）Or polypropylene（PP）Winding：Squeezed using adhesive extruder 7 and PE/PP
Go out machine 8, be combined together PE films or PP films and adhesive film with epoxy powder tree resin layer using lower canoe.AD
Extruder maximum extrusion capacity 250kg/h, PE/PP extruders maximum extrusion capacity 1500kg/h, apply pitch control 80～
180mm。
（7）Water drenches cooling：Steel pipe after coating enters water and drenches behind cooling room 9, and shower sends cooling water forth, makes fished pipe
Temperature is reduced rapidly, is cooled to less than 60 DEG C, and produced steam is extracted out by blower fan.Water drenches cooling room 9 height 4.5m, Φ
2600mm and following specification steel pipe can be passed through, and 300 cubes of water treatment capacity/when.
（8）Pipe end is ground：Doubles bistrique is matched somebody with somebody at the two ends of pipe end milling drum 10, and grinding angle 10-60 ° is adjustable, and equipment is total
Power 55kW, for being ground pipe end PE anticorrosive coats, grinding head span is adjustable, is suitable for caliber up to Φ 2600mm.Pipe end is pre-
100～150mm of segment length is stayed, pipe end anticorrosive coat is ground to less than 30 ° and is seamlessly transitted using pipe end milling drum 10 and with body.
（9）Inspection：Using online electric spark leak source detecting system 11 to the online electric spark leak detection of steel pipe, inspection whether there is leakage
Point, hunt leak voltage 25kV, while detecting to projects such as 3PE/3PP external anti-corrosion layer outward appearances, thickness, bonding forces.
（10）Inner surface treatment：Using interior ballasting rust remover 12, and install in two sets of mobile cleaning chamber porch of shot-blasting machine
The flexible glue circle matched with steel pipe specification, using the steel sand, shot that mix by a certain percentage, using throwing（Spray）The mode penetrated is removed
Rust process, impeller blasting speed is 1.0～1.2m/min.Interior ballasting rust remover cleaning chamber internal diameter Φ 2800mm, are suitable for maximum rule
Lattice caliber Φ 2600mm.Rust cleaning enters after the assay was approved interior spraying process.
（11）Interior spraying：Interior flush coater 13 sprays epoxy coating using airless spraying inner surface, in mobile shield
Footpath Φ 2800mm, are suitable for maximum specification caliber Φ 2600mm, and from the support floral disc matched with steel pipe specification, interior spraying rate
Control is controlled in 2.5～6.0L/min in 0.8～1m/min, flow.
（12）Solidification：Corrosion-resistant steel pipe market will be completed enter curing oven 14 to solidify, and make steel pipe coating be rapidly achieved 85% table
It is dry, shorten hardening time.Curing oven height 4.5m, can accommodate the entrance of Φ 200～Φ 2600mm specifications steel pipe, be cycling hot in stove
Wind, body tapping temperature is maintained at 40-60 DEG C, and furnace temperature adjustable range 50-90 DEG C, the steel pipe after interior painting stops about 40- in stove
80 minutes, reach the requirement of curing of coatings.
（13）Product inspection：The item-tests such as outward appearance, thickness, bonding force are carried out to finished product anti-corrosive steel tube.
（14）Spray mark warehouse-in：Read the pipe number in production management system, pipe range automatically using auto-Printing device people 15, prevent
The information such as rotten type, by auto-Printing device people 15 is automatically inside and outside to steel pipe spray mark is carried out, and then warehouse-in is piled up, and completes steel pipe
Internal and external anti-corrosive is produced.
As shown in figure 1, the production line constituted for above-mentioned selection process corresponding device.
It is this to be arranged as workshop arrangement and saved big preferably, apparatus for production line is arranged into " Z " font or " oneself " font
Quantity space, while reducing the turnaround time, improve production efficiency transports steel pipe between each equipment by travelling platform and transfer roller 2.
Hereinafter each critical process process and parameter are introduced by taking the inside and outside wall anti-corrosion production of large-scale steel pipe as an example, omit or do not carry
And part be consistent with the little shape steel tube inside and outside wall corrosion-resistant technical process of prior art and parameter.
The rotation gait of march on helical feed roller-way production line of large-scale steel pipe is 2～2.5 m/min, this rotation
Gait of march refers to steel pipe in heating in medium frequency, epoxy powder FBE sprayings, adhesive AD and polythene PE or polypropylene PP windings etc.
The speed transported using transfer roller in the upper feeding speed of transfer roller 2 and each equipment during operation.
Embodiment one, the anticorrosion process parameter that the big steel pipe of 1400mm is adopted for：The rotation gait of march of transfer roller 2 is 2.5
m/min；The span 800mm of transfer roller 2, cornerite is 70 °；Impeller blasting speed is 1.5m/min；Steel tube surface temperature reaches 180
℃；Epoxy powder FBE sprayings 8 are every that rifle injection flow is arranged on 43g/min, the bar of spray pressure 7 spray gun；AD extruders 7
Maximum extrusion capacity 250kg/h, the maximum extrusion capacity 1500kg/h of PE/PP extruders 8, applies pitch and controls in 175mm；Interior ball blast is removed
Rust speed is 1.2m/min；In 1m/min, flow is controlled in 6.0L/min for interior spraying rate control.
The anticorrosion process parameter that the big steel pipe of embodiment two, wherein 2000mm is adopted for：Transfer roller 2 rotates gait of march
2.2 m/min；The span 1400mm of transfer roller 2, cornerite is 65 °；Impeller blasting speed is 1.3m/min；Steel tube surface temperature reaches
205℃；Epoxy powder FBE sprayings 7 are every that rifle injection flow is arranged on 40g/min, the bar of spray pressure 6.5 spray gun；AD is squeezed
Go out the maximum extrusion capacity 220kg/h of machine 7, the maximum extrusion capacity 1350kg/h of PE/PP extruders 8, apply pitch and control in 125mm；It is interior
Impeller blasting speed is 1.1m/min；In 0.9m/min, flow is controlled in 4L/min for interior spraying rate control.
Embodiment three, the anticorrosion process parameter that the big steel pipe of 2600mm is adopted for：The rotation gait of march of transfer roller 2 is 2 m/
min；The span 1400mm of transfer roller 2, cornerite is 60 °；Impeller blasting speed is 1.2m/min；Steel tube surface temperature reaches 230 DEG C；
Epoxy powder FBE sprayings 6 are every that rifle injection flow is arranged on 36g/min, spray pressure 6bar spray gun；AD extruders 7 are maximum
The maximum extrusion capacity 1250kg/h of extrusion capacity 200kg/h, PE/PP extruder 8, applies pitch and controls in 80mm；Interior impeller blasting speed
Spend for 1.0m/min；In 0.8m/min, flow is controlled in 2.5L/min for interior spraying rate control.
It should be understood that the production line of the utility model embodiment may be equally applied to the small-sized of Φ 200～Φ 1400mm specifications
Steel pipe carries out corrosion-resistant production in the outer anti-corrosions of 3PE/3PP, epoxy.The foregoing is only preferred embodiment of the present utility model and
, not to limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent are replaced
Change and improve, should be included within protection domain of the present utility model.
Claims (5)
1. a kind of more than DN1400mm large-diameter steel pipes inside and outside wall anticorrosion production line, including outer ballasting rust remover（3）, intermediate frequency adds
Hot stove（5）, FBE powder spraying systems（6）, AD rubber extruding machines（7）, PE/PP extruders（8）, interior ballasting rust remover（12）, interior spray
Painting machine（13）With for transmitting the transfer roller of steel pipe（2）；It is characterized in that：The intermediate-frequency heating furnace（5）To concatenate and set temperature
Degree two intermediate-frequency heating furnaces of identical（5）；The transfer roller（2）The bag axially conveyed while with for steel pipe rotary
Angle, the cornerite is transfer roller（2）Axis direction and steel pipe transmission direction between angle；The cornerite is 60～70 °, is passed
Send roller（2）Between maximum adjustment span 1400mm.
2. more than DN1400mm large-diameter steel pipes inside and outside wall anticorrosion production line according to claim 1, it is characterised in that：
The caliber of the steel pipe is DN1400mm～2600mm.
3. more than DN1400mm large-diameter steel pipes inside and outside wall anticorrosion production line according to claim 1, it is characterised in that：
Also include preheating furnace（1）, micronic dust processing system（4）, for after outer wall of steel pipe anti-corrosion coating lower the temperature water drench cooling room（9）, use
In the pipe end milling drum of grinding pipe end PE anticorrosive coats（10）, online electric spark leak source detecting system（11）, curing oven（14）；It is described
For carrying out drying the preheating furnace of the pre-heat treatment to steel pipe（1）It is arranged on the outer ballasting rust remover（3）Before；The water drenches cold
But room（9）It is arranged on the PE/PP extruders（8）Afterwards, the pipe end milling drum（10）It is arranged on water and drenches cooling room（9）It
Afterwards, the online electric spark leak source detecting system for detecting external anti-corrosion layer leak source（11）It is arranged on pipe end milling drum（10）With
Interior ballasting rust remover（12）Between.
4. more than DN1400mm large-diameter steel pipes inside and outside wall anticorrosion production line according to claim 3, it is characterised in that：
It is additionally included in curing oven（14）Arrange afterwards it is inside and outside to steel pipe carry out spray mark auto-Printing device people（15）.
5. more than DN1400mm large-diameter steel pipes inside and outside wall anticorrosion production line according to claim 4, it is characterised in that：
The preheating furnace（1）, the transfer roller（2）, the outer ballasting rust remover（3）, the micronic dust processing system（4）, the intermediate frequency
Heating furnace（5）, the FBE powder spraying systems（6）, the AD rubber extruding machines（7）, the PE/PP extruders（8）, the water
Drench cooling room（9）, the pipe end milling drum（10）, the online electric spark leak source detecting system（11）, the interior impeller blasting
Machine（12）, the interior flush coater（13）, the curing oven（14）With the auto-Printing device people（15）Into " Z " font or " oneself "
Font is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002160.0U CN206139380U (en) | 2016-08-31 | 2016-08-31 | Large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002160.0U CN206139380U (en) | 2016-08-31 | 2016-08-31 | Large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm |
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| Publication Number | Publication Date |
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| CN206139380U true CN206139380U (en) | 2017-05-03 |
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ID=58618898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621002160.0U Active CN206139380U (en) | 2016-08-31 | 2016-08-31 | Large -diameter steel pipe inside and outside wall anticorrosion production line more than DN1400mm |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377337A (en) * | 2017-06-22 | 2017-11-24 | 陕西宇阳石油科技工程有限公司 | Epoxy powder coating process inside and outside a kind of steel pipe |
| CN108480116A (en) * | 2018-05-18 | 2018-09-04 | 青岛中邦科技发展有限公司 | A kind of overlength enamel pipe is automatically dry to ward off electrostatic spraying device |
| CN113843121A (en) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | Variable frequency induction heating device and method for externally coated steel pipe |
-
2016
- 2016-08-31 CN CN201621002160.0U patent/CN206139380U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377337A (en) * | 2017-06-22 | 2017-11-24 | 陕西宇阳石油科技工程有限公司 | Epoxy powder coating process inside and outside a kind of steel pipe |
| CN108480116A (en) * | 2018-05-18 | 2018-09-04 | 青岛中邦科技发展有限公司 | A kind of overlength enamel pipe is automatically dry to ward off electrostatic spraying device |
| CN113843121A (en) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | Variable frequency induction heating device and method for externally coated steel pipe |
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