CN107152578A - Pipeline modification device and with oily hot work method - Google Patents
Pipeline modification device and with oily hot work method Download PDFInfo
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- CN107152578A CN107152578A CN201710409863.8A CN201710409863A CN107152578A CN 107152578 A CN107152578 A CN 107152578A CN 201710409863 A CN201710409863 A CN 201710409863A CN 107152578 A CN107152578 A CN 107152578A
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- Prior art keywords
- clamping plate
- pipeline
- special
- threeway
- air bag
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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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/1026—Fire protection devices
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
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- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a kind of pipeline modification device and with oily hot work method, it is related to petrochemical industry.The device includes special clamping plate and isometrical special threeway；Special clamping plate includes tightening device, circular first clamping plate, second clamping plate and refractory flexible body therebetween；Tightening device is used to reduce the distance between first clamping plate and second clamping plate and fixed；Isometrical special threeway includes threeway body and shrouding；A circle adpting flange ring is welded with one of branch pipe of threeway body；Adpting flange ring is detachably connected with shrouding；Special clamping plate is used to block old pipeline, and just can be taken out through adpting flange ring.Then this method is isolated in the disconnected pipe in place for needing to transform at disconnected pipe by special clamping plate.After isolation, you can the special threeway of welding, special clamping plate is then taken out by the opening of threeway.Then shrouding closing threeway again, isolates oil gas, is then operated again after progress.The present invention realizes the band fire construction to aviation kerosine pipeline.
Description
Technical field
The present invention relates to technical field of petrochemical industry, more particularly, to a kind of pipeline modification device and with oily hot work side
Method.
Background technology
In use for some time, system needs the transformation in terms of progress technique, flow, such as machine level ground to aviation kerosine pipeline
Pipeline increases situations such as new old pipeline is connected after new oiling branch pipe, aviation fuel pipeline are relocated, although pipeline has carried out stopping transportation, let out
Still there is the situation that Residual oil (gas) is present in the processes, but pipeline such as pressure, oil extraction.
When carrying out fire operation in this case (the signified fire operation of this programme typically refers to pipeline welding operation), very
Easily occur the situation of blast on fire, prior art lacks a kind of safe fire operation method, substantially wait oil gas to escape automatically
Constructed after dissipating, the stand-by period is very long.
Based on this, the invention provides a kind of pipeline modification device and with oily hot work method to solve above-mentioned technology
Problem.
The content of the invention
It is an object of the invention to provide a kind of pipeline modification device, to realize the isolation to oil gas in pipeline.
The present invention also aims to provide a kind of band oily hot work method, for realizing the band to aviation kerosine pipeline
Fire construction.
Based on above-mentioned first purpose, the invention provides a kind of pipeline modification device, special clamping plate and isometrical special threeway；
The special clamping plate includes tightening device, circular first clamping plate and second clamping plate, the first clamping plate and the second clamping plate
It is stacked；Refractory flexible body is provided between the first clamping plate and the second clamping plate；
The tightening device is used to reduce the distance between the first clamping plate and the second clamping plate and fixed；
The isometrical special threeway includes threeway body and shrouding；
A circle adpting flange ring is welded with one of branch pipe of the threeway body；The adpting flange ring with it is described
Shrouding is detachably connected；Another branch pipe of the threeway body is used for and original seal for pipe joints is affixed connects, another branch pipe be used for
Newly add seal for pipe joints affixed；
The special clamping plate is used to block old pipeline, and just can be taken out through the adpting flange ring.
Optionally, the tightening device include screw rod, the screw rod pass through the second clamping plate after with the first clamping plate
Side it is vertically affixed；Nut is bolted with the screw rod, the nut is connected to the second clamping plate and the first clamping plate
Relative side.
Optionally, the screw rod is located at the center of the first clamping plate.
Optionally, many leads are provided between the first clamping plate and the second clamping plate.
Based on above-mentioned second purpose, the invention provides a kind of oily hot work method of band, the oily hot work side of the band
Method comprises the following steps,
Step 1, the pipeline progress perforate by hole making drill to required transformation, the relief tube carried after perforate using hole making drill
Pressure release is carried out, hole making drill is removed after pressure release, is extracted out the aviation fuel in pipeline with oil pump；
Step 2, when oil pick-up tube can not extract aviation fuel out again, stop oil pumping, it is the iron filings cleared up with magnet in pipeline, carefully clear
The burr of cut surface is managed, polishing is clean；
Step 3, in specified location carry out disconnected pipe；
After step 4, pipeline disconnect, oil resistant rubber isolation air bag is laid into pipe immediately, is isolated to oil resistant rubber in air bag
Aerating, makes oil resistant rubber isolate air bag and reaches sealing effectiveness full of pipeline；
Step 5, the installation special clamping plate as described above into pipeline, pass through the tightening device, extrude the fire prevention bullet
Property body, its is filled full packages road；
Step 6, with the gas concentration in gas concentration detector inspection opening pipeline, confirm gas concentration not in blast model
In enclosing, isometrical special three are then installed as described above and passes to precalculated position；
Step 7, progress Pipeline butt connect；
Step 8, the special clamping plate in isometrical special threeway taking-up pipeline and the oil resistant rubber isolate air bag
Afterwards, the shrouding of isometrical special threeway, welding tee closing end socket are installed.
Optionally, among step 4, the oil resistant rubber isolation air bag should be left beyond the point 1m that gets angry.
Optionally, among step 7, constantly into pipe, weld inflated with nitrogen enters line replacement during welding.
Optionally, among step 7, aerating is isolated in air bag to 0.2mpa to oil resistant rubber.
Optionally, among step 8, after the completion of pipeline welding, Non-Destructive Testing is carried out to weld seam, is being taken out after detection is qualified
The special clamping plate and the oil resistant rubber isolate air bag.
Optionally, among step 8, after welding tee closing end socket, to weld seam Non-Destructive Testing, at qualified rear progress anti-corrosion
Reason.
The diameter of the pipeline modification device that the present invention is provided, the first clamping plate and the second clamping plate is applied with needs
The diameter of the pipeline of work is roughly the same, in use, old pipeline is disconnected, special clamping plate is filled in pipeline, clamping plate is perpendicular to pipe
Road, by the tightening device, constantly reduces the distance between first clamping plate and second clamping plate, extrudes positioned there between
Refractory flexible body.Refractory flexible body can be the encapsulant of the flexible fire prevention oil removal such as dough.Its by the clamping plates of both sides not
Disconnected extruding, is constantly expanded to surrounding, finally, is expanded the full whole pipeline of filling, the seal isolation to pipeline is completed, after being
Continuous hot work is ready.Whole device is simple in construction, and application method is very easy, and good sealing effect, elastomer
Whole pipeline can be fully expanded to, sealing is not in gap, very facilitated.Then welding etc. is through threeway at disconnected pipe, so
The new pipe and three-way welding of connection will be needed afterwards.At this moment, due to the closure of special clamping plate, thus Mars will not be contacted with oil gas,
Therefore can get angry welding.After being finished Deng welding, special clamping plate is taken out, is then sealed by shrouding, complete transformation.
The oily hot work method of the band that the present invention is provided, by modes such as oil extraction and dual resisteances, there is provided one
Method that kind safe and reliable band oil is got angry, it is to avoid the generation of the situation such as on fire, reduces the risk of construction.
Based on this, the present invention is than original technology, with high safety, the low advantage of risk.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of special clamping plate provided in an embodiment of the present invention；
Fig. 2 is the left view of the special clamping plate shown in Fig. 1；
Fig. 3 is the structural representation of isometrical special threeway；
Fig. 4 is threeway schematic view of the mounting position in the oily hot work method of band provided in an embodiment of the present invention.
Icon：1- first clamping plates；2- second clamping plates；3- refractory flexible bodies；4- screw rods；5- nuts；6- pipelines；7- oil resistant rubbers
Glue isolates air bag；The isometrical special threeways of 8-；End socket is closed in 9- threeways；10- oil pumping hole；81- adpting flange rings；82- screwed holes.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Pipeline modification device embodiment
As shown in Figure 1, 2, in the present embodiment there is provided a kind of pipeline modification device, including special clamping plate and isometrical special
Threeway；The special clamping plate includes tightening device, circular first clamping plate 1 and second clamping plate 2, the first clamping plate 1 and described
Second clamping plate 2 is stacked；Refractory flexible body 3 is provided between the first clamping plate 1 and the second clamping plate 2；
The tightening device is used to reduce the distance between the first clamping plate 1 and described second clamping plate 2 and fixed；
The isometrical special threeway 8 includes threeway body and shrouding；
A circle adpting flange ring 81 is welded with one of branch pipe of the threeway body；The adpting flange ring 81 with
The shrouding is detachably connected；Another branch pipe of the threeway body is used for and original seal for pipe joints is affixed connects, another Zhi Guanyong
Yu Yuxin adds seal for pipe joints affixed；
The special clamping plate is used to block old pipeline, and just can be taken out through the adpting flange ring.
The pipeline modification device that the present invention is provided, the diameter and needs of the first clamping plate 1 and the second clamping plate 2
The diameter of the pipeline of construction is roughly the same, in use, special clamping plate is filled in pipeline, clamping plate is perpendicular to pipeline, by described
Tightening device, constantly reduces the distance between first clamping plate 1 and second clamping plate 2, extrudes refractory flexible positioned there between
Body 3.Refractory flexible body 3 can be the encapsulant of the flexible fire prevention oil removal such as dough.It is constantly squeezed by the clamping plate of both sides
Pressure, is constantly expanded to surrounding, finally, is expanded the full whole pipeline of filling, is completed the seal isolation to pipeline, is follow-up move
Fire construction is ready.Whole device is simple in construction, and application method is very easy, and good sealing effect, and elastomer can be abundant
Whole pipeline is expanded to, sealing is not in gap, very facilitated.Then welding etc., through threeway, then need at disconnected pipe
The new pipe and three-way welding to be connected.At this moment, due to the closure of special clamping plate, thus Mars will not be contacted with oil gas, therefore can
With welding of getting angry.After being finished Deng welding, special clamping plate is taken out, is then sealed by shrouding, complete transformation.
Based on this, the present invention has the advantages that mechanism is simple, good sealing effect than original technology.
Such as Fig. 2, in the alternative of the present embodiment, the tightening device includes screw rod 4, and the screw rod 4 is through described the
Side after second splint 2 with the first clamping plate 1 is vertical affixed；Nut 5 is bolted with the screw rod 4, the nut 5 is connected to
The second clamping plate 2 side relative with the first clamping plate 1.
The mode of the nut 5 of screw rod 4 is simple and practical, and cost easy to process is low, and operating method is also easy to, and tightens up and consolidate
Determine effect strong, can effectively extrude the refractory flexible body 3.
In such as Fig. 1,2, the alternative of the present embodiment, the screw rod 4 is located at the center of the first clamping plate 1.
The screw rod 4 is arranged on the center of two clamping plates, is conducive to uniformly inwardly extruding the refractory flexible body 3,
Make refractory flexible body 3 is uniform to be covered with whole space to external diffusion, so that all whole pipelines of sealing, sealing effectiveness is more preferable.
In the alternative of the present embodiment, many guiding are provided between the first clamping plate 1 and the second clamping plate 2
Post.
By setting many leads, second clamping plate 2 would not deflect during movement, Neng Goujun
Even lineal extrusion refractory flexible body 3.
The oily hot work embodiment of the method for band
As shown in Figure 3,4, this embodiment offers a kind of oily hot work method of band, the oily hot work method of the band,
The oily hot work method of the band comprises the following steps,
Step 1, the progress perforate of pipeline 6 by hole making drill to required transformation, the pressure release carried after perforate using hole making drill
Pipe carries out pressure release, removes hole making drill after pressure release, extracts the aviation fuel in pipeline 6 out with oil pump, is delivered to specified containers.
The liquid level of aviation fuel, when oil pick-up tube can not extract aviation fuel out again, stops taking out in step 2, at any time observation pipeline 6
Oil, the burr of the iron filings cleared up with magnet in pipeline 6, carefully cleaning cut surface, polishing is clean；
Step 3, in specified location carry out disconnected pipe；Usable manually or electrically tube brake implement carries out disconnected pipe in specified location.
After step 4, pipeline 6 disconnect, oil resistant rubber isolation air bag 7 is laid into pipe immediately, isolates air bag 7 to oil resistant rubber
Interior aerating, makes oil resistant rubber isolate air bag 7 and reaches sealing effectiveness full of pipeline 6；Necessary measure should be taken to fix air bag, prevented
Only under the negative pressure of pipeline 6, oil resistant rubber isolation air bag 7 is inhaled into pipeline 6.
Step 5, special clamping plate of the installation as described in claim 1-4 into pipeline 6, pass through the tightening device, extruding
The refractory flexible body 3, makes it fill full packages road 6；
Step 6, with the gas concentration in gas concentration detector inspection opening pipeline 6, confirm gas concentration not in blast
In the range of, then isometrical special threeway 8 is installed to precalculated position；Such as Fig. 3, when isometrical special threeway 8 is new old pipeline connection
Critical component, carries out preprocessing, the two ends of threeway are mainly connected with new old pipeline, are mainly at threeway according to the former specification of pipeline 6
Facilitate oil resistant rubber to isolate on the inside of being put into and taking out for air bag 7, clamping plate and dry ice and other items, threeway and be welded to connect flange ring in advance
81, a circle multiple screwed holes 82 are set on adpting flange ring 81, after the welding of threeway both sides is finished, oil resistant rubber is taken out from threeway
Isolate air bag 7, clamping plate and other items, the adpting flange ring 81 plus rubber asbestos gasket in shrouding and threeway are subjected to sealing installation, used
Bolt is fixed with screwed hole 82, and the oil gas in pipe is isolated from the outside, and finally welding tee closes end socket 9 at threeway, is completed
Pipeline 6 it is totally-enclosed.
Step 7, the progress butt welding of pipeline 6；
Step 8, the special clamping plate in isometrical special threeway taking-up pipeline 6 and the oil resistant rubber isolate air bag
After 7, the shrouding of isometrical special threeway, welding tee closing end socket 9 are installed.
This method will first need the perforate of pipeline 6 of constructing, and interior aviation fuel is taken away.Then in the disconnected pipe in place for needing to transform,
Then make use of oil resistant rubber to isolate air bag 7 and special clamping plate at disconnected pipe, the remaining oil gas in pipeline 6 has been carried out every
From.After isolation, you can the special threeway of welding, oil resistant rubber is then taken out by the opening of the external branch road of threeway and isolates air bag
7 and special clamping plate.Then the shrouding for recycling special grade to be carried through threeway closes threeway, isolates oil gas, is then subsequently entering again
Row Welding Modification etc. is operated.
The present processes, during hot work, are isolated with oil gas, are welded, are isolated by oil resistant rubber for the first time
Air bag 7 and the isolation of special clamping plate, second of welding are isolated using shrouding of the special grade through threeway, have all completely cut off oil gas, construction ten
Divide safety, will not cause on fire etc., need not also wait oil gas completely to volatilize, save the duration.
Wherein, before construction, to carry out
1. pipeline is investigated：
To needing to block or the trend of the pipeline that blocks, the gradient, flow direction, buried depth, duct length, the position of control valve, opening
On-site inspection is wanted in position of hole connection construction etc., and records.Calculating job step may need to extract the volume of aviation fuel out.
2. carry out preparation of construction：
2.1 pipelines purchased pipeline of relocating is identical preferably with the material of operation segment pipe.
2.2. welding procedure guiding book is worked out according to pipe material and welding material, evaluates and close in welding procedure guiding book
On the basis of lattice, welding procedure specification (WPS) is worked out.
Threeway, pipeline material required for 2.3 constructions all should have material list, quality certificate, survey report, product to close
Lattice card, product identification etc..
2.4 oil resistant rubbers isolation air bag 7 is (in weld job, for being isolated oily (gas) with getting angry in pipeline
Rubber pneumatic bag) should be inflated in advance, pressure is not less than 0.2Mpa, checks for leaks.
2.5 plants are intact, motor device ground connection through inspection, it is qualified.
2.6 job sites should have enough Active workings and operating space, the coast is clear.
2.7 are equipped with enough fire-fighting equipments, arrange fire fighting truck on duty if necessary.
(w is working width to the width w=D+k of the operating pit of 2.8 buried operation pipelines, and D is pipe diameter, and K takes 2.6m-
3.2m)。
Security alert area should be set outside 2.9 operation areas, and substantially mark is set.
2.10 operation hole planted agents set up-downgoing ladder.
Ground stud is installed near the oily perforate of 2.11 operation pipeline sections, band, grounding resistance is not more than 4 Ω.
2.12 pipe diameters are more than or equal to 500mm helix tube, and anti-packing should be welded before perforate.
2.13 pipeline pressure releases, close the nearest isolating valve in fire operation both sides.
2.14 containers for getting out to unload aviation fuel, container should check its clean situation, and container is non-using preceding unloading at this
Aviation kerosine, should be cleaned.
2.15 installation ground studs simultaneously check grounding resistance, and resistance value is not more than 4 Ω,
The requirement of 2.16 perforate short circuits welding：
The size of 1 stiffening ring should perform JB/T 4736 regulation.
2 welding sequences
Non-Destructive Testing should be carried out after the completion of 3 welding.
In the first step, manually or electrically hole making drill can be used in hole making drill, for the perforate machinery with milling cutter and centre drill,
Need to be connected to the oily perforate operation of device completion band that the short tube welded on pipeline 6 in advance is constituted with ball valve.What the first step was opened
For oil pumping hole 10, oil pumping hole 10 is the device of a flange short tube ball adding valve, on the day of fire operation or the previous day welds in advance
It is connected on pipeline 6, then uses drill perforate, aperture is determined regarding the specification size of main pipeline 6, normal conditions opening diameter is 50-
200mm, aviation fuel is mainly extracted out from this hole.
If oil pumping hole 10 pump after, due to the valve for a both sides of getting angry be not closed completely or pipeline 6 in excess oil it is more in short-term
In when can not be all drained, an oil extraction aperture apparatus of short tube that oily side ducts 6 be additionally arranged at the bottom and valve composition need to carried out, led
It is the excess oil in welding process in discharge conduit 6 to want function, prevents the excessive pressure of excess oil rises from causing oil resistant rubber to isolate gas
Capsule 7 fails and occurs accident, and operation to be welded carries out Seal treatment after being fully completed.The setting of outage should be flexible.
Among step 4, the oil resistant rubber isolation air bag 7 should be left beyond the point 1m that gets angry.
Among step 7, constantly into pipe, weld inflated with nitrogen enters line replacement during welding.Carry out more effectively on fire protect
Shield.
Among step 7, isolate in air bag 7 aerating to 0.2mpa to oil resistant rubber.
Among step 8, after the completion of pipeline 6 is welded, Non-Destructive Testing is carried out to weld seam, the spy is being taken out after detection is qualified
Clamping plate processed and oil resistant rubber isolation air bag 7.
Among step 8, after welding tee closing end socket 9, to weld seam Non-Destructive Testing, qualified rear progress preservative treatment.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of pipeline modification device, it is characterised in that including special clamping plate and isometrical special threeway；The special clamping plate includes
Tightening device, circular first clamping plate and second clamping plate, the first clamping plate and the second clamping plate are stacked；Described first
Refractory flexible body is provided between clamping plate and the second clamping plate；
The tightening device is used to reduce the distance between the first clamping plate and the second clamping plate and fixed；
The isometrical special threeway includes threeway body and shrouding；
A circle adpting flange ring is welded with one of branch pipe of the threeway body；The adpting flange ring and the shrouding
It is detachably connected；Another branch pipe of the threeway body is used for and original seal for pipe joints is affixed connects, another branch pipe be used for it is new plus
Seal for pipe joints is affixed；
The special clamping plate is used to block old pipeline, and just can be taken out through the adpting flange ring.
2. pipeline modification device according to claim 1, it is characterised in that the tightening device includes screw rod, the spiral shell
Bar passes through vertical with the side of the first clamping plate affixed after the second clamping plate；Nut, the spiral shell are bolted with the screw rod
Mother is connected to the second clamping plate side relative with the first clamping plate.
3. pipeline modification device according to claim 2, it is characterised in that the screw rod is located in the first clamping plate
At the heart.
4. pipeline modification device according to claim 1, it is characterised in that the first clamping plate and the second clamping plate it
Between be provided with many leads.
5. a kind of oily hot work method of band, it is characterised in that the oily hot work method of the band comprises the following steps,
Step 1, the pipeline progress perforate by hole making drill to required transformation, the relief tube carried after perforate using hole making drill are carried out
Pressure release, removes hole making drill after pressure release, is extracted out the aviation fuel in pipeline with oil pump；
Step 2, when oil pick-up tube can not extract aviation fuel out again, stop oil pumping, with magnet clear up pipeline in iron filings, carefully cleaning cut
The burr of face, polishing is clean；
Step 3, in specified location carry out disconnected pipe；
After step 4, pipeline disconnects, oil resistant rubber isolation air bag is laid into pipe immediately, isolates aerating in air bag to oil resistant rubber,
Oil resistant rubber is isolated air bag and reach sealing effectiveness full of pipeline；
Step 5, special clamping plate of the installation as described in claim 1-4 into pipeline, by the tightening device, extrude described anti-
Fiery elastomer, makes it fill full packages road；
Step 6, with the gas concentration in gas concentration detector inspection opening pipeline, confirm gas concentration not in explosive range
It is interior, then install isometrical special three as described in claim 1-4 and pass to precalculated position；
Step 7, progress Pipeline butt connect；
Step 8, the special clamping plate in the isometrical special threeway taking-up pipeline and the oil resistant rubber isolate air bag
Afterwards, the shrouding of isometrical special threeway, welding tee closing end socket are installed.
6. the oily hot work method of band according to claim 5, it is characterised in that among step 4, the oil resistant rubber
Isolation air bag should be left beyond the point 1m that gets angry.
7. the oily hot work method of band according to claim 5, it is characterised in that among step 7, during welding constantly to
Weld inflated with nitrogen enters line replacement in pipe.
8. the oily hot work method of band according to claim 5, it is characterised in that among step 7, to oil resistant rubber every
From aerating in air bag to 0.2mpa.
9. the oily hot work method of band according to claim 5, it is characterised in that among step 8, pipeline welding is completed
Afterwards, Non-Destructive Testing is carried out to weld seam, the special clamping plate and oil resistant rubber isolation air bag are being taken out after detection is qualified.
10. the oily hot work method of band according to claim 5, it is characterised in that among step 8, welding tee envelope
Close after end socket, to weld seam Non-Destructive Testing, qualified rear progress preservative treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409863.8A CN107152578B (en) | 2017-06-02 | 2017-06-02 | Pipeline modification device and with oily hot work method |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932081A (en) * | 2021-11-05 | 2022-01-14 | 安徽马钢气体科技有限公司 | Plugging method for gas pipeline partition operation |
| CN115288271A (en) * | 2022-08-18 | 2022-11-04 | 深圳市市政工程总公司 | Blind plate underwater operation construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344460A (en) * | 1980-11-28 | 1982-08-17 | Advance Valve Installations | Apparatus for plugging a pressure piping system |
| CN2628843Y (en) * | 2003-05-27 | 2004-07-28 | 李奎民 | Pipe fast expansion plug |
| CN103912758B (en) * | 2014-04-22 | 2016-01-27 | 钊田 | A kind of on-line production expansion duct closing type device |
| CN205315944U (en) * | 2015-12-01 | 2016-06-15 | 重庆科众机械有限公司 | Water pipe shutoff head |
| CN105987250A (en) * | 2016-07-29 | 2016-10-05 | 大庆天润德石油工程技术有限公司 | Blocking component for hot tapping process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932081A (en) * | 2021-11-05 | 2022-01-14 | 安徽马钢气体科技有限公司 | Plugging method for gas pipeline partition operation |
| CN115288271A (en) * | 2022-08-18 | 2022-11-04 | 深圳市市政工程总公司 | Blind plate underwater operation construction method |
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| CN107152578B (en) | 2018-05-25 |
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Address after: No.2, section 3, middle Renmin Road, Chengdu, Sichuan 610000 Patentee after: Sichuan Industrial Equipment Installation Group Co.,Ltd. Address before: No.2, section 3, middle Renmin Road, Chengdu, Sichuan 610014 Patentee before: SICHUAN PROVINCIAL INDUSTRIAL EQUIPMENT INSTALLATION Co. |