CN109630808A - A kind of novel pipeline anti-corrosion process for protecting - Google Patents
A kind of novel pipeline anti-corrosion process for protecting Download PDFInfo
- Publication number
- CN109630808A CN109630808A CN201811582520.2A CN201811582520A CN109630808A CN 109630808 A CN109630808 A CN 109630808A CN 201811582520 A CN201811582520 A CN 201811582520A CN 109630808 A CN109630808 A CN 109630808A
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- China
- Prior art keywords
- ultraviolet light
- steel pipe
- sheet material
- solidifies
- corrosion process
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- 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.)
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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
- 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
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
Abstract
A kind of novel pipeline anti-corrosion process for protecting adheres to one layer of ultraviolet light in pipeline and solidifies vinylite, and the step includes: 1) preparation of construction, to the oil removing and cleaning outside the sharp edge of steel pipe, the polishing of weld seam polishability and steel pipe；2) steel tube surface sandblasting ball blast has sprayed priming paint in 4 hours after steel pipe (1) surface is qualified；3) brushing ultraviolet light solidifies vinylite, and dry film overall thickness is 100 μm, brushes both sides；4) after the coating of second priming paint, ultraviolet light is laid immediately and solidifies thermosetting property prepreg sheet material；5) release cloth, flow-guiding screen, vacuum bag are installed, tear the surface layer that ultraviolet light solidifies thermosetting property prepreg sheet material, the laying demoulding of prepreg surface, release cloth outer surface lays water conservancy diversion, starts vaccum-pumping equipment；6) vacuum bag presses and ultraviolet light irradiation is used to solidify；7) quality examination, product warehousing；Advantage are as follows: the product of arbitrary dimension, shape can be manufactured；Product density is uniform, performance is stable；Equipment is simple, easy to operate.
Description
Technical field
The invention belongs to anti-corrosion protection works fields, and in particular to a kind of novel pipeline anti-corrosion process for protecting.
Background technique
In the transmission process of oil field pipe, due to petroleum, the abrasion of natural-gas transfer pipeline erosion resistant coating, removing and aging
Deng, it can all cause the burn into of pipeline to perforate and reveal, it, also can be to social ring while bringing serious economic loss to enterprise
Border and the public bring serious harm, for example corrosion failure occurs after putting several years into operation for underground oil and gas pipeline can not only cause oil
The shackle of gas is lost, and also will cause service material, the waste on manpower and the loss of stop work and production, or even because corrosion causes fire
The caused explosion of calamity, especially processed oil pipeline corrosion not only threatens personal safety, but also pollutes environment, consequence it is tight
Weight degree as one can imagine.It can be seen that etching problem not only results in the waste of iron and steel resource, can also because of corrosion so that equipment and
The reduced service life of pipeline increases production because pipeline updates and the cost of equipment is considerably beyond the price of material itself
Economic benefit substantially reduces while cost.Direct economic loss caused by corrosion be it is huge, so the corrosion protection design of pipeline
And concern of the construction technology technology increasingly by oilfield enterprise and various circles of society.
Summary of the invention
Mesh of the present invention provides a kind of novel pipeline anti-corrosion process for protecting, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
A kind of novel pipeline anti-corrosion process for protecting adheres to one layer of ultraviolet light inside pipeline and solidifies vinylite, the step
Suddenly include:
1) preparation of construction, including the oil removing and cleaning outside sharp edge, the polishing of weld seam polishability and the steel pipe to steel pipe；
2) steel tube surface sandblasting ball blast, steel tube surface require abrasive jet cleaning to " before coating steel surface rusting grade and derust etc.
Grade " Sa2.5 grade as defined in GB 8923, roughness reaches 70-120 μ, after steel pipe (1) surface treated qualification, in 4 hours
Priming paint is sprayed；
3) brushing ultraviolet light solidifies vinylite, and it is 100 μm that dry film, which designs overall thickness, divides twice continuous brush application；
4) installation ultraviolet light solidifies thermosetting property prepreg sheet material, after the coating of second priming paint, lays ultraviolet light immediately and solidifies thermosetting
Property prepreg sheet material, first all tears counterdie, is then wrapped in pipe surface on one side for tear film, removes bubble removing, use sieve
Drawing is compacted repeatedly；
5) release cloth, flow-guiding screen, vacuum bag are installed, the surface layer that ultraviolet light solidifies thermosetting property prepreg sheet material is torn, exposed
The laying demoulding of prepreg surface lays water conservancy diversion in release cloth outer surface, connects gas-guide tube and set to vacuumizing, be wrapped in and led with vacuum bag
Outside drift net and vacuum is sealed, starts vaccum-pumping equipment；
6) vacuum bag presses and ultraviolet light irradiation is used to solidify；
7) quality examination, product warehousing.
Polishability polishing is carried out to the sharp edge of steel pipe, gas flame cuttiug edge in the step 1), weld seam cannot have stomata,
There is no discontinuous weldering defect, weld seam and two sides are polished flat suitable, welding splash, welding slag etc..
In the step 2) abrasive material should clean, dry, is oil-free, no-sundries, selected abrasive material meets " nonmetallic sandblasting
Clear up the specification of abrasive material " ISO11126, the regulation of 1-8, the conductivity of non-metallic abrasive is no more than 300us/cm, the grain of abrasive material
Diameter size reaches the roughness of coat system requirement, and in Φ 1.0-1.2mm, the mixing ratio of steel sand is the size of shot and steel sand
40%。
Step 2) the steel tube surface, which has, visible to be returned rust, gets wet or contaminated need to clear up again to the grade of prescribed requirement
Not.
Piling bar pipe surface in the step 2) after Shot Blasting or blasting treatment blows off abrasive material with compressed air
Grain and surface dust, removing surface grade should reach the requirement of " steel surface cleanliness testing standard " ISO8502-3, dust
Amount should be less than 3 grades, cleaning compressed air dry oil free.
Step 3) the priming paint construction technology, need to avoid ultraviolet light construction, operating condition be steel pipe (1) surface temperature not
Higher than 3 DEG C of surrounding air dew-point temperature and room temperature is higher than 5 DEG C, and relative humidity is less than 85%, without days gas bars such as rainy, condensation, frosts
Part.
The step 4) solidifies thermosetting property prepreg sheet material along pipeline transversal sectional package ultraviolet light, two sections of sheet materials it
Between lap width be 5cm, and successively operation until completing entire installment work.
It is qualified to reach following standard for quality examination in the step 7): ultraviolet light solidifies thermosetting property prepreg sheet material sheet material
Its surface hardness Barcol is not less than 50 after solidification, using pull-out test instrument sampling observation ultraviolet light solidification thermosetting property prepreg sheet material and pipe
The adhesion strength in road, numerical value are not less than 10 MPa；Its thickness is adopted not less than 1200u after pipeline corrosion protection protective layer is installed
It is hunted leak with electric spark leak detector, detection voltage is not less than 10KV and testing result is no leak source.
Advantage of the present invention are as follows: the product of arbitrary dimension, arbitrary shape can be manufactured；Product density is uniform, performance is stable；If
It is standby simple, it is easy to operate.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is evacuation process figure of the present invention.
Fig. 3 is process flow chart of the invention.
Wherein: 1 steel pipe, 2 be ultraviolet light solidification thermosetting property prepreg sheet material, 3 be overlap joint, 4 be release cloth, 5 be water conservancy diversion
Net, 6 are vacuum bag.
Specific embodiment
A kind of novel pipeline anti-corrosion process for protecting adheres to one layer of ultraviolet light inside pipeline and solidifies vinylite, described
The step of include:
1) preparation of construction, including the oil removing and cleaning outside sharp edge, the polishing of weld seam polishability and the steel pipe 1 to steel pipe 1；
2) 1 surface sand-blasting ball blast of steel pipe, 1 surface requirements abrasive jet cleaning of steel pipe to " steel surface rusting grade and derusting before coating
Grade " Sa2.5 grades as defined in GB 8923, roughness reaches 70-120 μ, after 1 surface treated of steel pipe is qualified, in 4 hours
Priming paint is sprayed；
3) brushing ultraviolet light solidifies vinylite, and it is 100 μm that dry film, which designs overall thickness, divides twice continuous brush application；
4) installation ultraviolet light solidifies thermosetting property prepreg sheet material 2, after the coating of second priming paint, lays ultraviolet light immediately and solidifies thermosetting
Property prepreg sheet material 2, first all tears counterdie, is then wrapped in pipe surface on one side for tear film, removes bubble removing, use sieve
Drawing is compacted repeatedly；
5) release cloth 4, flow-guiding screen 5, vacuum bag 6 are installed, the surface layer that ultraviolet light solidifies thermosetting property prepreg sheet material 2 is torn, naked
Demoulding is laid on the prepreg surface of dew, lays water conservancy diversion in 4 outer surface of release cloth, is connect gas-guide tube and is set to vacuumizing, is wrapped with vacuum bag 6
It is rolled in 5 outside of flow-guiding screen and seals vacuum, start vaccum-pumping equipment；
6) vacuum bag 6 is pressed and is solidified using ultraviolet light irradiation；
7) quality examination, product warehousing.
Polishability polishing is carried out to the sharp edge of steel pipe 1, gas flame cuttiug edge in the step 1), weld seam there cannot be gas
Hole, without discontinuous weldering defect, weld seam and two sides are polished flat suitable, welding splash, welding slag etc..
In the step 2) abrasive material should clean, dry, is oil-free, no-sundries, selected abrasive material meets " nonmetallic sandblasting
Clear up the specification of abrasive material " ISO11126, the regulation of 1-8, the conductivity of non-metallic abrasive is no more than 300us/cm, the grain of abrasive material
Diameter size reaches the roughness of coat system requirement, and in Φ 1.0-1.2mm, the mixing ratio of steel sand is the size of shot and steel sand
40%。
1 surface of step 2) steel pipe, which has, visible to be returned rust, gets wet or contaminated need to clear up again to prescribed requirement
Rank.
Piling bar pipe surface in the step 2) after Shot Blasting or blasting treatment blows off abrasive material with compressed air
Grain and surface dust, removing surface grade should reach the requirement of " steel surface cleanliness testing standard " ISO8502-3, dust
Amount should be less than 3 grades, cleaning compressed air dry oil free.
Step 3) the priming paint construction technology, need to avoid ultraviolet light construction, and operating condition is that 1 surface temperature of steel pipe is not high
In 3 DEG C of surrounding air dew-point temperature and room temperature is higher than 5 DEG C, and relative humidity is less than 85%, without days gas bars such as rainy, condensation, frosts
Part.
The step 4) solidifies thermosetting property prepreg sheet material 2, two sections of sheet materials along pipeline transversal sectional package ultraviolet light
Between 3 width of overlap joint be 5cm, and successively operation until completing entire installment work.
It is qualified to reach following standard for quality examination in the step 7): it is solid that ultraviolet light solidifies thermosetting property prepreg sheet material 2
Its surface hardness Barcol is not less than 50 after change, using pull-out test instrument sampling observation ultraviolet light solidification thermosetting property prepreg sheet material 2 and pipe
The adhesion strength in road, numerical value are not less than 10 MPa；Its thickness is adopted not less than 1200u after pipeline corrosion protection protective layer is installed
It is hunted leak with electric spark leak detector, detection voltage is not less than 10KV and testing result is no leak source.
Claims (8)
1. a kind of novel pipeline anti-corrosion process for protecting adheres to one layer of ultraviolet light inside pipeline and solidifies vinylite, feature
Be: the step includes:
1) preparation of construction, including the sharp edge to steel pipe (1), the oil removing and cleaning that weld seam polishability is polished and steel pipe (1) is external；
2) steel pipe (1) surface sand-blasting ball blast, steel pipe (1) surface requirements abrasive jet cleaning to " before coating steel surface rusting grade and
Derusting grade " Sa2.5 grades as defined in GB 8923, roughness reaches 70-120 μ, after steel pipe (1) surface treated is qualified, 4
Priming paint has been sprayed in hour；
3) brushing ultraviolet light solidifies vinylite, and it is 100 μm that dry film, which designs overall thickness, divides twice continuous brush application；
4) installation ultraviolet light solidification thermosetting property prepreg sheet material (2) after the coating of second priming paint, lays ultraviolet light solidification heat immediately
Solidity prepreg sheet material (2), first all tears counterdie, is then wrapped in pipe surface on one side for tear film, removes bubble removing,
It is compacted repeatedly with roller；
5) release cloth (4), flow-guiding screen (5), vacuum bag (6) are installed, the table that ultraviolet light solidifies thermosetting property prepreg sheet material (2) is torn
Layer, lays demoulding on exposed prepreg surface, lays water conservancy diversion in release cloth (4) outer surface, connects gas-guide tube and sets to vacuumizing, uses
Vacuum bag (6) is wrapped in flow-guiding screen (5) outside and seals vacuum, starts vaccum-pumping equipment；
6) vacuum bag (6) is pressed and is solidified using ultraviolet light irradiation；
7) quality examination, product warehousing.
2. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: right in the step 1)
Sharp edge, the gas flame cuttiug edge of steel pipe (1) carry out polishability polishing, and weld seam cannot have stomata, without discontinuous weldering defect, weld seam
And two sides are polished flat suitable, welding splash, welding slag etc..
3. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: mill in the step 2)
Material should clean, dry, is oil-free, no-sundries, and selected abrasive material meets " specification of nonmetallic abrasive jet cleaning abrasive material " ISO11126,
The conductivity of the regulation of 1-8, non-metallic abrasive is not more than 300us/cm, and the particle size of abrasive material reaches coat system requirement
The size of roughness, shot and steel sand is 40% in Φ 1.0-1.2mm, the mixing ratio of steel sand.
4. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: the step 2) steel pipe
(1) surface, which has, visible return rust, gets wet or contaminated need to clear up again to the rank of prescribed requirement.
5. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: warp in the step 2)
Piling bar pipe surface after Shot Blasting or blasting treatment blows off abrasive grain and surface dust, removing surface grade with compressed air
The requirement of " steel surface cleanliness testing standard " ISO8502-3 should be reached, amount of dust should be less than 3 grades, and compressed air is used in cleaning
Dry oil free.
6. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: the step 3) priming paint
Construction technology, need to avoid ultraviolet light construction, and operating condition is that steel pipe (1) surface temperature is not higher than 3 DEG C of surrounding air dew-point temperature
And room temperature is higher than 5 DEG C, relative humidity is less than 85%, without weather conditions such as rainy, condensation, frosts.
7. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: the step 4) along
Pipeline transversal sectional wraps up ultraviolet light solidification thermosetting property prepreg sheet material (2), and overlap joint (3) width between two sections of sheet materials is 5cm,
And it successively operates until completing entire installment work.
8. a kind of novel pipeline anti-corrosion process for protecting according to claim 1, it is characterised in that: matter in the step 7)
Amount, which checks, reaches following standard qualification: its surface hardness Barcol is not small after ultraviolet light solidifies thermosetting property prepreg sheet material (2) solidification
In 50, solidify the adhesion strength of thermosetting property prepreg sheet material (2) and pipeline using pull-out test instrument sampling observation ultraviolet light, numerical value is not
Less than 10 MPa；Its thickness is hunted leak not less than 1200u using electric spark leak detector after pipeline corrosion protection protective layer is installed, and is examined
Voltage is surveyed not less than 10KV and testing result is no leak source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582520.2A CN109630808A (en) | 2018-12-24 | 2018-12-24 | A kind of novel pipeline anti-corrosion process for protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582520.2A CN109630808A (en) | 2018-12-24 | 2018-12-24 | A kind of novel pipeline anti-corrosion process for protecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630808A true CN109630808A (en) | 2019-04-16 |
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ID=66076980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582520.2A Pending CN109630808A (en) | 2018-12-24 | 2018-12-24 | A kind of novel pipeline anti-corrosion process for protecting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899072A (en) * | 2019-11-06 | 2020-03-24 | 湖北闪复管道科技有限公司 | Safety protection method for outer surface coating of underground oil gas process pipeline |
| CN113171885A (en) * | 2021-03-31 | 2021-07-27 | 唐山森普矿山装备有限公司 | Stator of stirring device of mechanical stirring type flotation machine and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178216A (en) * | 1983-03-30 | 1984-10-09 | Yokohama Rubber Co Ltd:The | Surface protecting process |
| CN102380471A (en) * | 2010-09-06 | 2012-03-21 | 刘彦 | Coating process for special modified solvent-free epoxy coating for glass reinforced plastic |
| CN104534221A (en) * | 2015-01-06 | 2015-04-22 | 北京力强基业工程技术有限公司 | Method for repairing and reinforcing pipeline by means of composite materials |
| CN106641578A (en) * | 2016-12-23 | 2017-05-10 | 江苏玖尚新材料有限公司 | Seamless installation method of pipeline external protective layer |
| JP6427624B1 (en) * | 2017-05-16 | 2018-11-21 | 阿南電機株式会社 | Repair method of steel structure |
-
2018
- 2018-12-24 CN CN201811582520.2A patent/CN109630808A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178216A (en) * | 1983-03-30 | 1984-10-09 | Yokohama Rubber Co Ltd:The | Surface protecting process |
| CN102380471A (en) * | 2010-09-06 | 2012-03-21 | 刘彦 | Coating process for special modified solvent-free epoxy coating for glass reinforced plastic |
| CN104534221A (en) * | 2015-01-06 | 2015-04-22 | 北京力强基业工程技术有限公司 | Method for repairing and reinforcing pipeline by means of composite materials |
| CN106641578A (en) * | 2016-12-23 | 2017-05-10 | 江苏玖尚新材料有限公司 | Seamless installation method of pipeline external protective layer |
| JP6427624B1 (en) * | 2017-05-16 | 2018-11-21 | 阿南電機株式会社 | Repair method of steel structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899072A (en) * | 2019-11-06 | 2020-03-24 | 湖北闪复管道科技有限公司 | Safety protection method for outer surface coating of underground oil gas process pipeline |
| CN113171885A (en) * | 2021-03-31 | 2021-07-27 | 唐山森普矿山装备有限公司 | Stator of stirring device of mechanical stirring type flotation machine and preparation method thereof |
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