CN104089088A - Installation method for pipeline with annual polypropylene conveying capacity being thirty thousand tons - Google Patents
Installation method for pipeline with annual polypropylene conveying capacity being thirty thousand tons Download PDFInfo
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- CN104089088A CN104089088A CN201410303765.2A CN201410303765A CN104089088A CN 104089088 A CN104089088 A CN 104089088A CN 201410303765 A CN201410303765 A CN 201410303765A CN 104089088 A CN104089088 A CN 104089088A
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- 238000009434 installation Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000004743 Polypropylene Substances 0.000 title abstract description 8
- -1 polypropylene Polymers 0.000 title abstract description 8
- 229920001155 polypropylene Polymers 0.000 title abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 56
- 238000010926 purge Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 26
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 10
- 239000010962 carbon steel Substances 0.000 claims abstract description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000005488 sandblasting Methods 0.000 claims abstract description 5
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000008235 industrial water Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000011900 installation process Methods 0.000 abstract description 6
- 238000005536 corrosion prevention Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/0243—Laying or reclaiming pipes on land, e.g. above the ground above ground
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses an installation method for a pipeline with the annual polypropylene conveying capacity being thirty thousand tons. The method comprises the steps that a sand blasting machine is adopted to conduct sand blasting and corrosion prevention on a carbon steel tube, and the outer wall is painted evenly; a surveying instrument is adopted to conduct surveying and paying-off, and a set cut position is found accurately to be marked; groove preparation is carried out; an argon arc welding mode is adopted for welding the pipeline, and lifting and installation are carried out; after the pipeline system is qualified through inspection, system purging pressure testing, including cleaning, purging, washing and pressure testing, is carried out according to the using requirements; the purging and washing method is determined according to the using requirements of the pipeline and a working medium and the dirty degree of the inner surface of the pipeline; after the pipeline system is qualified through water washing, water needs to be drained completely. The installation method is simple in process and high in installation precision, installation efficiency is improved, polypropylene leakage is avoided, environment is protected, and the problem that polypropylene leakage is caused when an existing pipeline installation process is slow and the installation precision is not high enough is solved.
Description
Technical field
The present invention relates to a kind of method, the installation method that especially to relate to a kind of year quantity delivered be 300,000 tons of polyacrylic pipelines.
Background technique
Oil claims again crude oil, be a kind of thickness, dark brown (sometimes a little green) liquid.There is petroleum storage upper crustal some areas.It is mixed and is formed by different hydrocarbons, and its chief component composition is alkane, goes back in addition the elements such as sulfur-bearing, oxygen, nitrogen, phosphorus, vanadium in oil.Oil is mainly used as fuel oil and gasoline, fuel oil and gasoline composition one of most important primary energy in the world.Oil is also that many chemical industry products are as the raw material of solution, chemical fertilizer, pesticide and plastics etc.Oil is mainly hydrocarbon.It is mixed and is formed by different hydrocarbons, the chemical element of composition oil is mainly carbon (83% ~ 87%), hydrogen (11% ~ 14%), and all the other are sulphur (0.06% ~ 0.8%), nitrogen (0.02% ~ 1.7%), oxygen (0.08% ~ 1.82%) and minor metallic element (Ni-V-Fe, antimony etc.).The chief component that is closed the hydro carbons forming and formed oil by carbon and hydrogenation, accounts for 95% ~ 99%, and various hydro carbons are divided into by its structure: alkane, cycloalkane, aromatic hydrocarbon.General natural oil does not often contain alkene and the alkynes that quantity does not wait in secondary operations product containing alkene.Sulfur-bearing, oxygen, nitrogen compound are harmful to petroleum products, in petroleum processing, should remove as far as possible.Stone oil properties is different because of the place of production, and density is 0.8 ~ 1.0 gram per centimeter, and range of viscosities is very wide, solidifying point difference very large (30 ~-60 degrees Celsius), boiling spread is more than normal temperature to 500 degree Celsius, dissolves in multiple organic solvent, water insoluble, but can form emulsion with water.But the composition of the oil in different oil fields and appearance can be distinguished very large.The extractive matter of oil can be for the production of polypropylene, and polypropylene is a kind of hemicrystalline thermoplastic.Have higher impact resistance, mechanical property is tough, anti-multiple organic solvent and acid and alkali corrosion.Being widely used in industrial quarters, is one of usually common macromolecular material.Be mainly used in the production of various long and short polypropylene fibers, the fire-retardant component for the production of polypropylene woven bag, food bag, injection-molded article etc. for the production of electrical equipment, telecommunication, lamp decoration, lighting installation and television set.In a large amount of polyacrylic conveyings, need to adopt special pipeline to carry, and traditional pipeline installation process is slow, and exists installation precision inadequate, cause polyacrylic leakage phenomenon, there is potential safety hazard.
Summary of the invention
The object of the invention is to overcome above-mentioned existing pipeline installation process slow; and exist installation precision inadequate, cause polyacrylic leakage problem, the installation method that to have designed a kind of year quantity delivered be 300,000 tons of polyacrylic pipelines; this installation method process is simple; installation precision is high, and installation efficiency raising, has avoided polyacrylic leakage; protect environment; solve existing pipeline installation process slow, and existed installation precision inadequate, caused polyacrylic leakage problem.
Object of the present invention is achieved through the following technical solutions: a kind of year quantity delivered is the installation method of 300,000 tons of polyacrylic pipelines, comprises the following steps:
(a) sandblast, anticorrosion: adopt sandblasting machine to carry out sandblast to carbon steel tubing anticorrosion, ensure that the inside and outside wall sandblast of carbon steel tubing is even, then evenly brush paint at outer wall;
(b) measuring point unwrapping wire: adopt mapper to survey and draw unwrapping wire to carbon steel tubing, the incision site of finding setting accurately identifies;
(c) groove processing: the groove processing of pipeline adopts: abrasive wheel cutting machine, electric angle grinder, beveling machine are processed; In groove and mother metal flawless, layering in edge 15mm, be mingled with, the defect such as breakage, burr, remove oxide, greasy dirt, slag and other objectionable impurities of groove face, keep clean, after groove turbidity test check that groove processes, groove turbidity test are checked to front in group, if find that pipeline section part is dirty, must take clean measure, if desired, do polishing treatment at welding surface;
(d) group is to, welding: adopt the mode of argon arc welding to carry out the welding of pipeline, position while welding must not be less than 100mm apart from the bending starting point of bend pipe, and must not be less than tube outer diameter; When pipeline nominal diameter is less than 150mm, the distance of two butt welds of pipe can not be less than tube outer diameter, and is not less than 50mm; When pipeline nominal diameter is more than or equal to 150mm, the distance of two butt welds of pipe is not less than 150mm; When pipe crimping circle welding joint counterpart, two longitudinal weld spacing should be greater than 100mm; Weldment group to front should by groove face and near the oil, paint, dirt, rust etc. of mother metal (inside and outside wall) clean out, until send metallic lustre, weldment group to time should accomplish that inwall flushes, pipe group to time should be straight, Welding Angular Deformation is measured at 200mm place, distance interface center, large-diameter welded steel pipe group to time, its longitudinal weld should mutually stagger and be no less than 100mm, and in easy check point;
(e) propping up lifting installs: suspension and support position should be correct, and installation should be led solid, and pipe contacts with supporting surface should be good; Suspension rod is answered at right angle setting; Fixed support should be fixed before compensation device pre-stretching or precompression; The slip surface of guiding or sliding support should be clean smooth, must not have crooked and bite phenomenon;
(f) pipeline purging pressure testing: pipe-line system is after passed examination, should carry out the pressure testing of system purge by usage requirement, comprise cleaning, purge, rinse and pressure testing, blow-washing method should be according to the usage requirement of pipeline, the degree of fouling of working medium and inner surface of pipeline is determined, hydraulic pressure test should be used industrial water, Austenitic stainless steel pipe road system taking water when medium is tested, chloride ion content in water must not exceed 50mg/L, the temperature of liquid when fluid pressure test, pipe-line system liquid must not be lower than 5 DEG C, and should be higher than the brittle transition temperature of metallic material, when fluid pressure test, should slowly boost, after reaching test pressure, stop pressing 10min, then be down to design pressure, stop pressing 30min, should be with not step-down, without leaking, nothing is deformed into intensity and leak test is qualified, pneumatic test test pressure is by 1.15 times of values of design pressure, when pneumatic test, should progressively slowly increase pressure, when pressure rise to test pressure 50% time, voltage stabilizing 3min, no abnormal or leak, continue to boost step by step by 10% of test pressure, every grade of voltage stabilizing 3min, until test pressure, voltage stabilizing 10min, again by Pressure Drop to design pressure, spraying neutral stabilizer checks pressure testing system, pipeline is without distortion, nothing leakage is intensity and leak test is qualified, conveying gas body medium pipeline should adopt air purge, conveying liquid body medium pipeline should adopt water to rinse, carry gas medium pipeline should use steam blowing, nominal diameter is more than or equal to the pipeline of 600mm, adopt labor cleaning, non-heat distribution pipeline must not be used steam blowing, before purge, should check pipeline to prop up, the firm degree of suspension bracket, should give if desired reinforcing, when pipeline purging, system maximum pressure must not exceed the design pressure of e-quipment and pipe system, the purging thing that system purges must not pollute surrounding devices and pipeline, and must not enter qualified pipeline, before pipeline purging, orifice plate, the modulating valve that flange connects, important valve, throttle valve, safety valve, instrument etc. should be removed, valve and instrument for welding should be taked protective measure, do not allow equipment and the pipeline of purge to isolate with purge and wash system, when pipe-line system steam blowing, the insulation of pipe-line system should complete substantially, steam blowing should first carry out heating coil, the thermal walking of the pipeline in heating coil process should be in allowed band, pipe-line system water rinses and should carry out continuously, the water colour of exhaust port and transparency and entrance water colour and transparency visual consistent be qualified, after the flushing of pipe-line system water is qualified, should be by water emptying.
In sum; the invention has the beneficial effects as follows: this installation method process is simple; installation precision is high; and installation efficiency improves; avoid polyacrylic leakage, protected environment, solved existing pipeline installation process slow; and exist installation precision inadequate, cause polyacrylic leakage problem.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
Year quantity delivered is an installation method for 300,000 tons of polyacrylic pipelines, comprises the following steps:
(a) sandblast, anticorrosion: adopt sandblasting machine to carry out sandblast to carbon steel tubing anticorrosion, ensure that the inside and outside wall sandblast of carbon steel tubing is even, then evenly brush paint at outer wall;
(b) measuring point unwrapping wire: adopt mapper to survey and draw unwrapping wire to carbon steel tubing, the incision site of finding setting accurately identifies;
(c) groove processing: the groove processing of pipeline adopts: abrasive wheel cutting machine, electric angle grinder, beveling machine are processed; In groove and mother metal flawless, layering in edge 15mm, be mingled with, the defect such as breakage, burr, remove oxide, greasy dirt, slag and other objectionable impurities of groove face, keep clean, after groove turbidity test check that groove processes, groove turbidity test are checked to front in group, if find that pipeline section part is dirty, must take clean measure, if desired, do polishing treatment at welding surface;
(d) group is to, welding: adopt the mode of argon arc welding to carry out the welding of pipeline, position while welding must not be less than 100mm apart from the bending starting point of bend pipe, and must not be less than tube outer diameter; When pipeline nominal diameter is less than 150mm, the distance of two butt welds of pipe can not be less than tube outer diameter, and is not less than 50mm; When pipeline nominal diameter is more than or equal to 150mm, the distance of two butt welds of pipe is not less than 150mm; When pipe crimping circle welding joint counterpart, two longitudinal weld spacing should be greater than 100mm; Weldment group to front should by groove face and near the oil, paint, dirt, rust etc. of mother metal (inside and outside wall) clean out, until send metallic lustre, weldment group to time should accomplish that inwall flushes, pipe group to time should be straight, Welding Angular Deformation is measured at 200mm place, distance interface center, large-diameter welded steel pipe group to time, its longitudinal weld should mutually stagger and be no less than 100mm, and in easy check point;
(e) propping up lifting installs: suspension and support position should be correct, and installation should be led solid, and pipe contacts with supporting surface should be good; Suspension rod is answered at right angle setting; Fixed support should be fixed before compensation device pre-stretching or precompression; The slip surface of guiding or sliding support should be clean smooth, must not have crooked and bite phenomenon;
(f) pipeline purging pressure testing: pipe-line system is after passed examination, should carry out the pressure testing of system purge by usage requirement, comprise cleaning, purge, rinse and pressure testing, blow-washing method should be according to the usage requirement of pipeline, the degree of fouling of working medium and inner surface of pipeline is determined, hydraulic pressure test should be used industrial water, Austenitic stainless steel pipe road system taking water when medium is tested, chloride ion content in water must not exceed 50mg/L, the temperature of liquid when fluid pressure test, pipe-line system liquid must not be lower than 5 DEG C, and should be higher than the brittle transition temperature of metallic material, when fluid pressure test, should slowly boost, after reaching test pressure, stop pressing 10min, then be down to design pressure, stop pressing 30min, should be with not step-down, without leaking, nothing is deformed into intensity and leak test is qualified, pneumatic test test pressure is by 1.15 times of values of design pressure, when pneumatic test, should progressively slowly increase pressure, when pressure rise to test pressure 50% time, voltage stabilizing 3min, no abnormal or leak, continue to boost step by step by 10% of test pressure, every grade of voltage stabilizing 3min, until test pressure, voltage stabilizing 10min, again by Pressure Drop to design pressure, spraying neutral stabilizer checks pressure testing system, pipeline is without distortion, nothing leakage is intensity and leak test is qualified, conveying gas body medium pipeline should adopt air purge, conveying liquid body medium pipeline should adopt water to rinse, carry gas medium pipeline should use steam blowing, nominal diameter is more than or equal to the pipeline of 600mm, adopt labor cleaning, non-heat distribution pipeline must not be used steam blowing, before purge, should check pipeline to prop up, the firm degree of suspension bracket, should give if desired reinforcing, when pipeline purging, system maximum pressure must not exceed the design pressure of e-quipment and pipe system, the purging thing that system purges must not pollute surrounding devices and pipeline, and must not enter qualified pipeline, before pipeline purging, orifice plate, the modulating valve that flange connects, important valve, throttle valve, safety valve, instrument etc. should be removed, valve and instrument for welding should be taked protective measure, do not allow equipment and the pipeline of purge to isolate with purge and wash system, when pipe-line system steam blowing, the insulation of pipe-line system should complete substantially, steam blowing should first carry out heating coil, the thermal walking of the pipeline in heating coil process should be in allowed band, pipe-line system water rinses and should carry out continuously, the water colour of exhaust port and transparency and entrance water colour and transparency visual consistent be qualified, after the flushing of pipe-line system water is qualified, should be by water emptying.
This installation method process is simple, and installation precision is high, and installation efficiency raising, has avoided polyacrylic leakage, has protected environment, has solved existing pipeline installation process slow, and has existed installation precision inadequate, causes polyacrylic leakage problem.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technology of the present invention, method are done above embodiment in fact, within all falling into protection scope of the present invention.
Claims (1)
1. quantity delivered is an installation method for 300,000 tons of polyacrylic pipelines year, it is characterized in that, comprises the following steps:
(a) sandblast, anticorrosion: adopt sandblasting machine to carry out sandblast to carbon steel tubing anticorrosion, ensure that the inside and outside wall sandblast of carbon steel tubing is even, then evenly brush paint at outer wall;
(b) measuring point unwrapping wire: adopt mapper to survey and draw unwrapping wire to carbon steel tubing, the incision site of finding setting accurately identifies;
(c) groove processing: the groove processing of pipeline adopts: abrasive wheel cutting machine, electric angle grinder, beveling machine are processed; In groove and mother metal flawless, layering in edge 15mm, be mingled with, the defect such as breakage, burr, remove oxide, greasy dirt, slag and other objectionable impurities of groove face, keep clean, after groove turbidity test check that groove processes, groove turbidity test are checked to front in group, if find that pipeline section part is dirty, must take clean measure, if desired, do polishing treatment at welding surface;
(d) group is to, welding: adopt the mode of argon arc welding to carry out the welding of pipeline, position while welding must not be less than 100mm apart from the bending starting point of bend pipe, and must not be less than tube outer diameter; When pipeline nominal diameter is less than 150mm, the distance of two butt welds of pipe can not be less than tube outer diameter, and is not less than 50mm; When pipeline nominal diameter is more than or equal to 150mm, the distance of two butt welds of pipe is not less than 150mm; When pipe crimping circle welding joint counterpart, two longitudinal weld spacing should be greater than 100mm; Weldment group to front should by groove face and near the oil, paint, dirt, rust etc. of mother metal (inside and outside wall) clean out, until send metallic lustre, weldment group to time should accomplish that inwall flushes, pipe group to time should be straight, Welding Angular Deformation is measured at 200mm place, distance interface center, large-diameter welded steel pipe group to time, its longitudinal weld should mutually stagger and be no less than 100mm, and in easy check point;
(e) propping up lifting installs: suspension and support position should be correct, and installation should be led solid, and pipe contacts with supporting surface should be good; Suspension rod is answered at right angle setting; Fixed support should be fixed before compensation device pre-stretching or precompression; The slip surface of guiding or sliding support should be clean smooth, must not have crooked and bite phenomenon;
(f) pipeline purging pressure testing: pipe-line system is after passed examination, should carry out the pressure testing of system purge by usage requirement, comprise cleaning, purge, rinse and pressure testing, blow-washing method should be according to the usage requirement of pipeline, the degree of fouling of working medium and inner surface of pipeline is determined, hydraulic pressure test should be used industrial water, Austenitic stainless steel pipe road system taking water when medium is tested, chloride ion content in water must not exceed 50mg/L, the temperature of liquid when fluid pressure test, pipe-line system liquid must not be lower than 5 DEG C, and should be higher than the brittle transition temperature of metallic material, when fluid pressure test, should slowly boost, after reaching test pressure, stop pressing 10min, then be down to design pressure, stop pressing 30min, should be with not step-down, without leaking, nothing is deformed into intensity and leak test is qualified, pneumatic test test pressure is by 1.15 times of values of design pressure, when pneumatic test, should progressively slowly increase pressure, when pressure rise to test pressure 50% time, voltage stabilizing 3min, no abnormal or leak, continue to boost step by step by 10% of test pressure, every grade of voltage stabilizing 3min, until test pressure, voltage stabilizing 10min, again by Pressure Drop to design pressure, spraying neutral stabilizer checks pressure testing system, pipeline is without distortion, nothing leakage is intensity and leak test is qualified, conveying gas body medium pipeline should adopt air purge, conveying liquid body medium pipeline should adopt water to rinse, carry gas medium pipeline should use steam blowing, nominal diameter is more than or equal to the pipeline of 600mm, adopt labor cleaning, non-heat distribution pipeline must not be used steam blowing, before purge, should check pipeline to prop up, the firm degree of suspension bracket, should give if desired reinforcing, when pipeline purging, system maximum pressure must not exceed the design pressure of e-quipment and pipe system, the purging thing that system purges must not pollute surrounding devices and pipeline, and must not enter qualified pipeline, before pipeline purging, orifice plate, the modulating valve that flange connects, important valve, throttle valve, safety valve, instrument etc. should be removed, valve and instrument for welding should be taked protective measure, do not allow equipment and the pipeline of purge to isolate with purge and wash system, when pipe-line system steam blowing, the insulation of pipe-line system should complete substantially, steam blowing should first carry out heating coil, the thermal walking of the pipeline in heating coil process should be in allowed band, pipe-line system water rinses and should carry out continuously, the water colour of exhaust port and transparency and entrance water colour and transparency visual consistent be qualified, after the flushing of pipe-line system water is qualified, should be by water emptying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303765.2A CN104089088B (en) | 2014-06-30 | 2014-06-30 | A kind of year quantity delivered is the installation method of 300,000 tons of polyacrylic pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303765.2A CN104089088B (en) | 2014-06-30 | 2014-06-30 | A kind of year quantity delivered is the installation method of 300,000 tons of polyacrylic pipelines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104089088A true CN104089088A (en) | 2014-10-08 |
| CN104089088B CN104089088B (en) | 2016-03-23 |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649867A (en) * | 2018-11-28 | 2019-04-19 | 中国化学工程第十四建设有限公司 | Polypropylene product degassing cabin upside-down construction technique |
| CN109926803A (en) * | 2019-04-24 | 2019-06-25 | 日照港达船舶重工有限公司 | A kind of jack-up unit guide pile system fluid pressure line construction technology |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644469A (en) * | 2018-05-22 | 2018-10-12 | 山西省工业设备安装集团有限公司 | The construction technology of main steam system pipeline in a kind of Steam Turbine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6353988B1 (en) * | 2000-02-25 | 2002-03-12 | Atlantic Richfield Company | Method of installing a highly tensioned suspended pipeline |
| CN101290075A (en) * | 2008-06-06 | 2008-10-22 | 陕西化建工程有限责任公司 | Long conveying pipeline construction method capable of simultaneously clearing pipe and testing pressure |
| CN103791158A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Nitrogen and argon pipeline construction technology |
| CN103791157A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Construction technology for natural gas pipeline |
-
2014
- 2014-06-30 CN CN201410303765.2A patent/CN104089088B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6353988B1 (en) * | 2000-02-25 | 2002-03-12 | Atlantic Richfield Company | Method of installing a highly tensioned suspended pipeline |
| CN101290075A (en) * | 2008-06-06 | 2008-10-22 | 陕西化建工程有限责任公司 | Long conveying pipeline construction method capable of simultaneously clearing pipe and testing pressure |
| CN103791158A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Nitrogen and argon pipeline construction technology |
| CN103791157A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Construction technology for natural gas pipeline |
Non-Patent Citations (2)
| Title |
|---|
| 唐芳珍: "谈化工工艺管道的合理安装", 《化学工程和装备》 * |
| 陶祥: "浅谈煤矿大直径瓦斯抽采管道安装工艺及施工方法", 《现代物业·新建设》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649867A (en) * | 2018-11-28 | 2019-04-19 | 中国化学工程第十四建设有限公司 | Polypropylene product degassing cabin upside-down construction technique |
| CN109926803A (en) * | 2019-04-24 | 2019-06-25 | 日照港达船舶重工有限公司 | A kind of jack-up unit guide pile system fluid pressure line construction technology |
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| CN104089088B (en) | 2016-03-23 |
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