CN109834115A - A kind of rolling mill hydraulic piping foundation method - Google Patents
A kind of rolling mill hydraulic piping foundation method Download PDFInfo
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- CN109834115A CN109834115A CN201711228709.7A CN201711228709A CN109834115A CN 109834115 A CN109834115 A CN 109834115A CN 201711228709 A CN201711228709 A CN 201711228709A CN 109834115 A CN109834115 A CN 109834115A
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Abstract
The present invention provides a kind of rolling mill hydraulic piping foundation method, comprising steps of S1, old pipeline being numbered and being identified, and draws whole pipeline and moves towards figure；S2, the old pipeline is removed；S3, the new pipeline of production；S4, the logical ball cleaning of pipeline is carried out to the new pipeline；S5, oil flushing is carried out to the new pipeline；S5, it moves towards figure according to the whole pipeline and carries out installation to the new pipeline to form hydraulic pipeline.It realizes rolling mill hydraulic piping foundation environmental protection construction, reduces the unit online pickling construction time；The online oil flushing efficiency of rolling mill hydraulic pipeline is improved, can guarantee that oil flushing meets rolling mill hydraulic servo-system production needs.
Description
Technical field
The present invention relates to metallurgical technology fields, more particularly to a kind of rolling mill hydraulic piping foundation method.
Background technique
Rolling mill hydraulic system due to longtime running and act frequently and rack in bad environments, cause hydraulic pipeline table
Face burn into tube wall is thinning and connector leaks, especially the hydraulic pipeline of milling train milling train bottom, soaks for a long time through detection inside pipe wall
It steeps, wash away and cause wall thinning, make system there are technological deficiency and security risk,
Meanwhile rolling mill hydraulic pipeline rout is intricate, arranges disorderly and unsystematic, the practical pipeline of original construction drawing and scene
It is not inconsistent, and hydraulic pipeline number label has no way of distinguishing through corrosion at plate through walls；Construction workload is big, and piping foundation is about
1200mm；Construction period is especially tight, including hydraulic pipeline is removed, mapping, production, flaw detection, is rinsed, pressure testing；Milling train site space
Narrow, bad environments, pipe surface and ground greasy dirt are more；Rolling mill hydraulic requirements for pipes original is torn open original-pack, and rolling mill body is hydraulic
Pipeline is most of in most the inside, and outside there also is provided thin oil, emulsion, compressed air pipe, and it is original-pack on do not remove other
Pipeline, therefore rolling mill body piping foundation difficulty is very big.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of rolling mill hydraulic piping foundation sides
Method, for solving the problems, such as that great in constructing amount, construction period is tightly, difficulty of construction is big in the prior art.
The present invention provides a kind of rolling mill hydraulic piping foundation method, comprising steps of S1, old pipeline being numbered and being marked
Know, and draws whole pipeline and move towards figure；S2, the old pipeline is removed；S3, the new pipeline of production；S4, pipe is carried out to the new pipeline
Road leads to ball cleaning；S5, oil flushing is carried out to the new pipeline；S6, moved towards according to the whole pipeline figure to the new pipeline into
Row installation forms hydraulic pipeline.
In one embodiment of the invention, the step S1 is being worn comprising steps of S11, complete the number of the old pipeline
The steel seal of the number is stamped on wallboard；S12, manufacture Sign Board and indicated on the Sign Board it is described number and and it is described old
The flow direction of liquid in pipeline；S13, behaviour adjust the preliminary prospecting completing milling train fore side plate through walls and moving towards to rolling mill body hydraulic pipeline
With the confirmation of field pipes；S14, the drafting whole pipeline move towards figure.
In one embodiment of the invention, the step S3 is comprising steps of S31, cut new pipeline；S32, to institute
It states notch to be polished and adjusted, guarantees that the verticality and the notch between the notch and the axis of the new pipeline are inclined
Gradient meets preset requirement；S33, bend pipe is carried out to the new pipeline, so that the bending radius of the new pipeline meets default want
It asks.
In one embodiment of the invention, the step S5 comprising steps of S51, production distributor, according to hydraulic principle
Figure is connected to form circulation flushing circuit by the distributor and oil flushing equipment and for oil return general pipeline；S52, the oil flushing is pressed
The circulation flushing circuit is divided into several oil flushing circuits by the output flow of device and the size of caliber, while in trunk
Two sets of filters are arranged in parallel on pipeline, for switching in filter element cleaning and replacement；S53, the new pipeline is carried out
Oil flushing.
In one embodiment of the invention, after further comprising the steps of: oil flushing after the step S53, will temporarily it connect
Adapter tube is removed, and is restored to hydraulic line system, and open nozzle is carried out environmental sealing.
In one embodiment of the invention, further comprised the steps of: between the step S5 and S6 by the hydraulic tube after oil flushing
Road reinstalls the hydraulic system, carries out system pressure testing；When pressure testing, low pressure recycle net air side by side is first done；Then examination is increased step by step
Pressure pressure, i.e., it is every to increase level-one pressure test pressure until rising to default pressure test pressure after the pressure stabilizing of voltage stabling control, persistently preset
Operating pressure is down to after time to be checked comprehensively.
In one embodiment of the invention, the step S6 further comprises the steps of: according to construction technology, from inside outwards, first on
Sequence under afterwards installs the new pipeline；During installation, the part welded to needs carries out defect detecting test after welding；
Next step installation is carried out after flaw detection is qualified.
In one embodiment of the invention, after the completion of further comprising the steps of: the hydraulic pipeline after the step S6, according to
Number and other medium pipelines of identification recovery and support of pipelines and pipe clamp；The part for needing segmented welding to restore is being welded simultaneously
Defect detecting test is carried out after connecing.
As described above, a kind of rolling mill hydraulic piping foundation method of the invention, has the advantages that
It realizes rolling mill hydraulic piping foundation environmental protection construction, reduces the unit online pickling construction time；Improve rolling mill hydraulic pipe
The online oil flushing efficiency in road can guarantee that oil flushing meets rolling mill hydraulic servo-system production needs.
Detailed description of the invention
Fig. 1 is shown as the flow diagram of rolling mill hydraulic piping foundation method in the present invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that illustrating the basic structure that only the invention is illustrated in a schematic way provided in following embodiment
Think, only shown in schema then with related component in the present invention rather than component count, shape and size when according to actual implementation
Draw, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel
It is likely more complexity.
Referring to Fig. 1, it should however be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The bright revealed content of book is not intended to limit the invention enforceable limit so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach and obtain
In the range of capable of covering.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, Fig. 1 is shown as the flow diagram of rolling mill hydraulic piping foundation method in the present invention.The present invention mentions
A kind of rolling mill hydraulic piping foundation method has been supplied, comprising steps of S1, old pipeline being numbered and being identified, and has drawn integral tube
Line moves towards figure；S2, the old pipeline is removed；S3, the new pipeline of production；S4, the logical ball cleaning of pipeline is carried out to the new pipeline；S5,
Oil flushing is carried out to the new pipeline；S6, moved towards according to the whole pipeline figure to the new pipeline carry out installation formed it is hydraulic
Pipeline.Generally for the time is saved, we will also be to new stainless steel pipes while being numbered and identifying to old pipeline
It is checked and is cleaned, the teams and groups that construct after new stainless steel pipes are shown up are first to be examined jointly with point to pipe surface and internal progress
It checks, pipe surface is wiped using cotton, and inner wall of the pipe uses compressed air purging, it is ensured that pipeline is cleaned without getting rusty with inner wall；
Then nozzle is cleaned using carbon tetrachloride, finally blocks nozzle using plastic cloth and iron wire and is wrapped up.It is carried out in step S2 old
When pipeline is removed, whose number, the principle of whose dismounting adhered to, according to outside in, the sequence to get on, get off is from milling train plate through walls
Protective demolition is carried out along pipeline rout.Confirmation oil pipe pressure release, emptying before hydraulic pipeline is removed, tripartite confirm that rear is removable
It unloads.Pipeline is arranged according to field pipes and equipment very much before removing, and outside can now be removed to the equipment and pipeline (without cutting)
It carries out mark first to remove, including support of pipelines and pipe clamp.If needing to remove other medium pipelines really, now by pipeline into
Row segmentation label, marks and agrees to remove through an inspection with after safety measure, not so we cannot cut rashly, prevent from anticipating
Outer injury and accident occur.In one preferred embodiment, old pipeline removes hydraulic pipeline about 1200m, other medium pipeline meters are about
120m；Support of pipelines and pipe clamp remove about 500kg.After new pipeline production, increases pipeline and lead to ball chemical cleaning project technique, protect
The later period is demonstrate,proved in progress pipeline oil time during rinsing, that is, 2-3 times of efficiency raising.
In one embodiment of this invention, the step S1 is being worn comprising steps of S11, complete the number of the old pipeline
The steel seal of the number is stamped on wallboard；S12, manufacture Sign Board and indicated on the Sign Board it is described number and and it is described old
The flow direction of liquid in pipeline；S13, behaviour adjust the preliminary prospecting completing milling train fore side plate through walls and moving towards to rolling mill body hydraulic pipeline
With the confirmation of field pipes；S14, the drafting whole pipeline move towards figure.In general, according to site inspection and milling train sheet before annual overhaul
The hydraulic pipeline of body moves towards and hydraulic system principle figure completes the number of hydraulic pipeline, and finishes number schematic diagram and label use
Sign Board.Executing agency (hydraulic cylinder, oily horse of the hydraulic pipeline number order from milling train plate through walls to rolling mill body during annual overhaul
Up to), hydraulic pipeline make marks sequence of construction from rolling mill body executing agency (hydraulic cylinder, oil motor) to from milling train plate through walls, most
Pipeline steel seal is stamped on plate through walls afterwards, the circular indicia board to make marks using thickness t=1mm diameter d=30mm is identifying
Pipeline number is stamped using steel seal on board, is tied up using iron wire in the middle position of every segment pipe of dismounting.Behaviour adjusts preliminary completion milling train
The confirmation of exploration and field pipes that transmission side plate through walls to rolling mill body hydraulic pipeline moves towards.Pipeline is right after removing during annual overhaul
Every root canal road take pictures and keeps on file, surveys and draws, and draws sketch.In a preferred embodiment, hydraulic pipeline has 47 work 1200m.
In one embodiment of this invention, the step S3 is comprising steps of S31, cut new pipeline；S32, to institute
It states notch to be polished and adjusted, guarantees that the verticality and the notch between the notch and the axis of the new pipeline are inclined
Gradient meets preset requirement；S33, bend pipe is carried out to the new pipeline, so that the bending radius of the new pipeline meets default want
It asks.Hydraulic pipeline makes cutting using machine cuts in advance, and machine cuts generally use: sawing machine cutting, anodontia saw cut, pipe knife are cut
It cuts, manual saw cut etc..Guarantee that tube surface is smooth, flawless, pipe when cutting, cutting powder, burr, the slag of pipe end
And oxide skin etc. must be removed completely.Notch must assure that polishing neat, surfacing, flawless, impulse- free robustness, it is uneven,
Necking, molten slag, oxide, iron filings etc..Notch section dip deviation should not exceed the 1% of outer diameter tube, and be not greater than 2mm.
The turning of pipeline is constructed, and the pipeline of small-bore pipeline≤φ 38 generally uses clod wash to construct, and cold bending equipment uses hydraulic bend pipe
Machine, bending radius is generally between 3D~4.5D.The turning at sharp turn or bigbore pipeline can only then be welded with finished product pipe fitting
It is carried out after connecing.Hydraulic pipeline welding uses full argon arc welding welding, and stainless steel pipes material is SUS304, therefore welding wire material is
ER304.The advantages of argon arc welding welding, is: can guarantee that good weldquality, the reliability in system use and raising use the longevity
Life.To guarantee welding quality, the inspection of notice point, tissue welding personnel's soldering stainless steel pipeline argon arc welding weldering after annual overhaul preceding pipeline arrival
Test specimen is connect, test specimen entrusts film making flaw detection by Party A, hydraulic pipeline welding in annual overhaul scene is participated in after qualified.Pipeline welding uses full argon
Arc helps to shorten the oil flushing time when oil flushing, improves the cleannes and reliability of system.The face of weld of pipeline welding is not
Must there are crackle, stomata, slag inclusion, fusion character splashing etc..
In one embodiment of this invention, the step S5 comprising steps of S51, production distributor, according to hydraulic principle
Figure is connected to form circulation flushing circuit by the distributor and oil flushing equipment and for oil return general pipeline；S52, the oil flushing is pressed
The circulation flushing circuit is divided into several oil flushing circuits by the output flow of device and the size of caliber, while in trunk
Two sets of filters are arranged in parallel on pipeline, for switching in filter element cleaning and replacement；S53, the new pipeline is carried out
Oil flushing.In a preferred embodiment, online hydraulic circulation flushing work can be carried out after hydraulic pipeline replacement acceptance(check).Pipe
Road hydraulic circulation first carries out the connection preparation of pipeline at rolling mill body hydraulic cylinder before rinsing, will be for oil return using hydraulic hose
Pipeline short circuit, which is ganged up, to be connected；At plate through walls, using long hydraulic hose or hard tube by the hydraulic fitting at plate through walls
Oil inlet according to hydraulic schematic diagram and oil cylinder equipment interface (oil inlet with oil return) respectively at flushing pipeline is connected with oil return distributor；
Make the distributor of interim 2 φ 219*6L=1500, on each distributor for being respectively mounted ball valve control on oil returning branch pipe, distribute
Device forms circulation flushing circuit with rinsing pumping unit for oil return general pipeline and hydraulic circulation and connect, and notices that distributor general pipeline aperture is answered
In the bottom of distributor, prevents bits in oil to be deposited in distributor lower curtate influence circulation flushing effect, rinse petrol station itself cleaning
Completely；Flushing pump selects flow > 30m3The flushing pump (it is required that flow velocity > 1.5m/s) of/h.Oil flushing is loop-coupled generally to be wanted
Seeking Truth: as far as possible connecting together the pipeline of identical caliber, will by the output flow of oil flushing pump and the size of oil flushing caliber
System is divided into several oil flushing circuits, so that flushing oil is smoothly through each circuit and returns in the fuel tank of oil flushing equipment.?
Before the connection of oil flushing circuit, oil flushing equipment must be in place.Main pipe road should set two filters, and two sets of filters must be simultaneously
Join (the using and the reserved), so as to filter core cleaning and replacement filter core when switch over.Each oil flushing circuit is big according to its caliber
Small, length of flush is typically about 100~300m.Total length is rinsed up to 500 in primary several the flushable circuits of oil flushing equipment
~1000m.The interim circuit of oil flushing, which is adopted, to be connected with steel tube, and the minimum point in each oil flushing circuit should add interim tapping valve,
The highest point in circuit adds exhaust valve, after building up at this to prevent the bubble in pipeline, reduces flow passing section face at this too much
Area of passage influences flushing effect.Oil sample periodically will be handed over Party A's consignment by oil flushing process, reach Party A's technical requirements
Test stone is qualification.
Further, after further comprising the steps of: oil flushing after the step S53, interim connecting tube is removed, to liquid
Pressure pipeline system is restored, and open nozzle is carried out environmental sealing.After oil flushing, interim connecting tube is torn open at once
It removes, hydraulic line system is restored.Open nozzle is blocked up stifled tight or is sealed with plastic cloth, calico wrapping with clean plastics
It closes, prevents dust or foreign matter from entering pipeline.
Preferably, further comprised the steps of: between the step S5 and S6 the hydraulic pipeline after oil flushing is reinstalled it is described hydraulic
System carries out system pressure testing；When pressure testing, low pressure recycle net air side by side is first done；Then pressure test pressure is increased step by step, i.e., every process
Increase level-one pressure test pressure after the pressure stabilizing of voltage stabling control until rising to default pressure test pressure, is down to work pressure after continuing preset time
Power is checked comprehensively.In a preferred embodiment, qualified rolling mill hydraulic back of pipeline will be rinsed and is attached to hydraulic system, be then
It unites and carries out system pressure testing after rinsing qualification, using working media as test medium, when fuel tank is added in new working oil, filtering should be passed through,
Filtering accuracy is not less than the filtering accuracy of system, and when pressure testing, Ying Xianzuo low pressure recycle, net air, test pressure should be step by step side by side
It increases, every the suitable pressure stabilizing of elevated by one step 2-3 minutes, reaches after test pressure (1.5Ps), hold pressure 10 minutes, be then down to work pressure
Power is checked that, with all weld seams of system and connector without oil leak, pipeline (carries out at normal temperature without qualification is permanently deformed to comprehensively
Pressure testing).
In one embodiment of this invention, the step S6 further comprise the steps of: according to construction technology, from inside outwards, first on
Sequence under afterwards installs the new pipeline；During installation, the part welded to needs carries out defect detecting test after welding；
Next step installation is carried out after flaw detection is qualified.Common, whom new Pipe installing also removed according to, who makes, the principle of whose installation, presses
According to construction technology, from inside outwards, the sequence of construction to get on, get off is installed.Encounter what pipeline directly docked in installation process,
Radiographic inspection is carried out to weld seam according to acceptance specification after the completion of welding, the mountable pipeline above and outside in qualified rear of detecting a flaw,
Avoid secondary installing.
In one embodiment of this invention, after the completion of further comprising the steps of: the hydraulic pipeline after the step S6, according to
Number and other medium pipelines of identification recovery and support of pipelines and pipe clamp；The part for needing segmented welding to restore is being welded simultaneously
Defect detecting test is carried out after connecing.
After hydraulic pipeline is installed, other medium pipelines, including support of pipelines and pipe clamp are restored according to ready-made mark.
If pipeline recovery needs segmented welding, needed to carry out seam inspection according to Pipe installing acceptance specification after the completion of pipeline welding
It checks.In a preferred embodiment, hydraulic pipeline replaces a total of about 1252m among milling train plate through walls to rolling mill body hydraulic cylinder,
Other medium pipelines dismount total about 120m.
In conclusion rolling mill hydraulic piping foundation method of the invention, realizes rolling mill hydraulic piping foundation environmental protection construction, subtracts
Few unit online pickling construction time；The online oil flushing efficiency of rolling mill hydraulic pipeline is improved, can guarantee that oil flushing meets milling train
Hydrauservo System production needs.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial benefit
With value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (8)
1. a kind of rolling mill hydraulic piping foundation method, which is characterized in that comprising steps of
S1, old pipeline is numbered and is identified, and drawn whole pipeline and move towards figure；
S2, the old pipeline is removed；
S3, the new pipeline of production；
S4, the logical ball cleaning of pipeline is carried out to the new pipeline；
S5, oil flushing is carried out to the new pipeline；
S6, it moves towards figure according to the whole pipeline and carries out installation to the new pipeline to form hydraulic pipeline.
2. rolling mill hydraulic piping foundation method according to claim 1, which is characterized in that the step S1 comprising steps of
S11, the number for completing the old pipeline, stamp the steel seal of the number on plate through walls；
S12, manufacture Sign Board and indicated on the Sign Board it is described number and and the old pipeline in liquid flow direction；
S13, the prospecting and field pipes for adjusting preliminary completion milling train fore side plate through walls to rolling mill body hydraulic pipeline to move towards are grasped
Confirmation；
S14, the drafting whole pipeline move towards figure.
3. rolling mill hydraulic piping foundation method according to claim 1, which is characterized in that the step S3 comprising steps of
S31, new pipeline is cut；
S32, the notch is polished and is adjusted, guarantee the verticality between the notch and the axis of the new pipeline
Meet preset requirement with the notch gradient；
S33, bend pipe is carried out to the new pipeline, so that the bending radius of the new pipeline meets preset requirement.
4. rolling mill hydraulic piping foundation method according to claim 1, which is characterized in that the step S5 comprising steps of
S51, production distributor are connected group according to hydraulic schematic diagram by the distributor and oil flushing equipment and for oil return general pipeline
At circulation flushing circuit；
S52, by the output flow of the oil flushing equipment and the size of caliber, the circulation flushing circuit is divided into several oil
Flush loop, while two sets of filters are arranged in parallel on main pipe road, for being switched in filter element cleaning and replacement；
S53, oil flushing is carried out to the new pipeline.
5. rolling mill hydraulic piping foundation method according to claim 4, which is characterized in that also wrapped after the step S53
Include step:
After oil flushing, interim connecting tube is removed, hydraulic line system is restored, and open nozzle is wrapped
Wrap up in sealing.
6. rolling mill hydraulic piping foundation method according to claim 5, which is characterized in that between the step S5 and S6 also
Comprising steps of
Hydraulic pipeline after oil flushing is reinstalled into the hydraulic system, carries out system pressure testing；When pressure testing, low pressure recycle is first done side by side
Net air；Then increase pressure test pressure step by step, i.e., it is every to increase level-one pressure test pressure after the pressure stabilizing of voltage stabling control until rising to
Pressure test pressure is preset, operating pressure is down to after lasting preset time and is checked comprehensively.
7. rolling mill hydraulic piping foundation method according to claim 1, which is characterized in that the step S6 further includes step
It is rapid:
Sequence according to construction technology, from inside outwards, first up and then down installs the new pipeline；
During installation, the part welded to needs carries out defect detecting test after welding；Next step installation is carried out after flaw detection is qualified.
8. rolling mill hydraulic piping foundation method according to claim 1, which is characterized in that further include after the step S6
Step:
After the completion of the hydraulic pipeline, according to number and other medium pipelines of identification recovery and support of pipelines and pipe clamp；Simultaneously
Defect detecting test is carried out after welding to the part for needing segmented welding to restore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228709.7A CN109834115A (en) | 2017-11-29 | 2017-11-29 | A kind of rolling mill hydraulic piping foundation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228709.7A CN109834115A (en) | 2017-11-29 | 2017-11-29 | A kind of rolling mill hydraulic piping foundation method |
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| CN109834115A true CN109834115A (en) | 2019-06-04 |
Family
ID=66882330
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711228709.7A Pending CN109834115A (en) | 2017-11-29 | 2017-11-29 | A kind of rolling mill hydraulic piping foundation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283589A (en) * | 2020-11-09 | 2021-01-29 | 广东韶钢松山股份有限公司 | Flushing pressure and flow distribution method for hydraulic lubrication pipeline |
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| CN112283589A (en) * | 2020-11-09 | 2021-01-29 | 广东韶钢松山股份有限公司 | Flushing pressure and flow distribution method for hydraulic lubrication pipeline |
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