CN107152578B - Pipeline modification device and with oily hot work method - Google Patents
Pipeline modification device and with oily hot work method Download PDFInfo
- Publication number
- CN107152578B CN107152578B CN201710409863.8A CN201710409863A CN107152578B CN 107152578 B CN107152578 B CN 107152578B CN 201710409863 A CN201710409863 A CN 201710409863A CN 107152578 B CN107152578 B CN 107152578B
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- pipeline
- special
- threeway
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
-
- 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
Abstract
The present 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 fix；Isometrical special threeway includes threeway body and sealing plate；A circle connecting flange ring is welded in one of branch pipe of threeway body；Connecting flange ring is detachably connected with sealing plate；Special clamping plate can just take out for blocking old pipeline through connecting flange ring.This method is needing the place transformed to break pipe, is then isolated at disconnected pipe by special clamping plate.After isolation, you can weld special threeway, then take out special clamping plate by the opening of threeway.Then sealing plate 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
After pipeline increases new oiling branch pipe, aviation fuel pipeline is relocated situations such as new old pipeline connection, although pipeline has carried out stopping transportation, has let out
The processes such as pressure, oil extraction, but still have situation existing for Residual oil (gas) in pipeline.
In this case carry out during fire operation (fire operation of this programme meaning typically refers to pipeline weld job), very
There is a situation where explosion on fire, the prior art lacks a kind of safe fire operation method, substantially oil gas is waited to escape automatically
It constructs after dissipating, the stand-by period is very long.
Based on this, the present 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 oil hot work method, the band to aviation kerosine pipeline is used to implement
Fire construction.
Based on above-mentioned first purpose, the present 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 fix；
The isometrical special threeway includes threeway body and sealing plate；
A circle connecting flange ring is welded in wherein the first branch pipe of the threeway body；The connecting flange ring with it is described
Sealing plate is detachably connected；Second branch pipe of the threeway body is used for and original seal for pipe joints is affixed connects, the 3rd branch pipe be used for
Newly plus seal for pipe joints is affixed；
The special clamping plate can just take out for blocking old pipeline through the connecting 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 on the screw rod, the nut is connected to the second clamping plate and the first clamping plate
Opposite one side.
Optionally, the screw rod is located at the center of the first clamping plate.
Optionally, more leads are provided between the first clamping plate and the second clamping plate.
Based on above-mentioned second purpose, the present invention provides a kind of band oil hot work method, the band oil hot work sides
Method includes the following steps,
Step 1 carries out perforate, the relief tube carried after perforate using hole making drill by hole making drill to the pipeline of required transformation
Pressure release is carried out, 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 the iron filings, carefully clear in magnet cleaning pipeline
The burr of cut surface is managed, polishing is clean；
Step 3 carries out disconnected pipe in designated position；
After step 4, pipeline disconnect, oil resistant rubber isolation air bag is placed into pipe immediately, into oil resistant rubber isolation air bag
Aerating makes oil resistant rubber isolation air bag reach sealing effect full of pipeline；
Step 5 installs special clamping plate as described above into pipeline, by the tightening device, squeezes the fire prevention bullet
Property body, its is made to fill full packages road；
Step 6, with the gas concentration in gas concentration detector inspection opening pipeline, confirm gas concentration not in explosion 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 isolates air bag by the special clamping plate in isometrical special threeway taking-up pipeline and the oil resistant rubber
Afterwards, the sealing plate 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, during welding constantly into pipe weld inflated with nitrogen into line replacement.
Optionally, among step 7, into oil resistant rubber isolation air bag, aerating is to 0.2mpa.
Optionally, among step 8, after the completion of pipeline welding, weld seam is carried out non-destructive testing, is further taken out after detection is qualified
The special clamping plate and oil resistant rubber isolation air bag.
Optionally, among step 8, after welding tee closing end socket, to weld seam non-destructive testing, carried out after qualified at anti-corrosion
Reason.
The diameter of the pipeline modification device provided by the invention, 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, squeezes positioned there between
Refractory flexible body.Refractory flexible body can be the sealing material of the flexible fire prevention oil removal such as dough.Its by the clamping plates of both sides not
Disconnected extruding, is constantly expanded around, finally, is expanded the full entire pipeline of filling, the seal isolation to pipeline is completed, after being
Continuous hot work is ready.Whole device is simple in structure, and application method is very easy, and sealing effect is good, elastomer
Entire pipeline can be fully expanded to, sealing is not in gap, very convenient.Then welding etc. is through threeway at disconnected pipe, so
The new pipe and three-way welding that connect 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 Deng welding, special clamping plate is taken out, is then sealed by sealing plate, complete transformation.
The band oil hot work method provided by the invention, by modes such as oil extraction and dual resisteances, provides one
The method that the safe and reliable band oil of kind is got angry, avoids the generation of the situations such as on fire, reduces the risk of construction.
Based on this, the present invention has the advantages that high safety, risk are low etc. compared with original technology.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached 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 special clamping plate shown in FIG. 1；
Fig. 3 is the structure diagram of isometrical special threeway；
Fig. 4 is threeway schematic view of the mounting position in band oil hot work method 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- connecting flange rings；82- threaded holes.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction 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 description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present 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；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.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, a kind of pipeline modification device is provided in the present embodiment, 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 fix；
The isometrical special threeway 8 includes threeway body and sealing plate；
A circle connecting flange ring 81 is welded in wherein the first branch pipe of the threeway body；The connecting flange ring 81 with
The sealing plate is detachably connected；Second branch pipe of the threeway body is used for and original seal for pipe joints is affixed connects, and the 3rd effective
Yu Yuxin adds seal for pipe joints affixed；
The special clamping plate can just take out for blocking old pipeline through the connecting flange ring.
The diameter and needs of the pipeline modification device provided by the invention, 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, squeezes refractory flexible positioned there between
Body 3.Refractory flexible body 3 can be the sealing material 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 around, finally, is expanded the full entire pipeline of filling, is completed the seal isolation to pipeline, is subsequent dynamic
Fire construction is ready.Whole device is simple in structure, and application method is very easy, and sealing effect is good, and elastomer can be abundant
Entire pipeline is expanded to, sealing is not in gap, very convenient.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 Deng welding, special clamping plate is taken out, is then sealed by sealing plate, complete transformation.
Based on this, the present invention has the advantages that mechanism is simple, sealing effect is good compared with 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
It is vertical affixed with the side of the first clamping plate 1 after second splint 2；Nut 5 is bolted on the screw rod 4, the nut 5 is connected to
The second clamping plate 2 one side opposite with the first clamping plate 1.
The mode of 4 nut 5 of screw rod is simple and practical, and easy to process at low cost, operating method is also easy to, and tightens and consolidate
It is strong to determine effect, can effectively squeeze the refractory flexible body 3.
Such as Fig. 1,2, in 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 at the center of two clamping plates, is conducive to uniformly inwardly squeeze the refractory flexible body 3,
Refractory flexible body 3 is made uniformly to external diffusion, to be covered with entire space, so as to all seal entire pipeline, sealing effect is more preferable.
In the alternative of the present embodiment, more guiding are provided between the first clamping plate 1 and the second clamping plate 2
Column.
By setting the more 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 band oil hot work method, the band oil hot work method,
The band oil hot work method includes the following steps,
Step 1 carries out perforate, the pressure release carried after perforate using hole making drill by hole making drill to the pipeline 6 of required transformation
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.
Step 2, the liquid level for observing aviation fuel in pipeline 6 at any time when oil pick-up tube can not extract aviation fuel out again, stop taking out
Oil, with iron filings, the burr of careful cleaning cut surface in magnet cleaning pipeline 6, polishing is clean；
Step 3 carries out disconnected pipe in designated position；Usable manually or electrically tube brake implement carries out disconnected pipe in designated position.
After step 4, pipeline 6 disconnect, oil resistant rubber isolation air bag 7 is placed into pipe immediately, isolates air bag 7 to oil resistant rubber
Interior aerating makes oil resistant rubber isolation air bag 7 reach sealing effect full of pipeline 6；Necessary measure should be taken to fix air bag, prevented
Only under 6 negative pressure of pipeline, 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 by the tightening device, squeeze
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 that gas concentration does not explode
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 according to former 6 specification of pipeline, and the both ends of threeway are mainly connected with new old pipeline, are mainly at threeway
Facilitate being put into and taking out for oil resistant rubber isolation air bag 7, clamping plate and dry ice and other items, flange ring is welded to connect in advance on the inside of threeway
81, set on connecting flange ring 81 the multiple threaded holes 82 of circle, after treating the welding of threeway both sides, oil resistant rubber is taken out from threeway
Isolate air bag 7, clamping plate and other items, the connecting flange ring 81 in sealing plate and threeway plus rubber asbestos gasket are sealed installation, used
Bolt is fixed with threaded 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 carries out 6 butt welding of pipeline；
Step 8 isolates air bag by the special clamping plate in isometrical special threeway taking-up pipeline 6 and the oil resistant rubber
After 7, the sealing plate of isometrical special threeway, welding tee closing end socket 9 are installed.
This method will first need 6 perforate of pipeline of constructing, and interior aviation fuel is taken away.Then break pipe in the place for needing to transform,
Then make use of oil resistant rubber isolation 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 weld special threeway, then take out oil resistant rubber by the opening of the external branch of threeway and isolate air bag
7 and special clamping plate.Then recycle the sealing plate closing threeway that special grade carries through threeway, isolate oil gas, then again subsequently into
The operations such as row Welding Modification.
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 sealing plate of the special grade through threeway, have all completely cut off oil gas, construction ten
Point safety, will not cause on fire etc., need not also oil gas be waited completely to volatilize, save the duration.
Wherein, before construction, to carry out
1. pipeline is investigated：
To need to block or the trend of the pipeline that blocks, the gradient, flow direction, buried depth, duct length, control valve position, open
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 are relocated material identical of the purchased pipeline preferably with 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.
The required threeway of 2.3 constructions, pipeline material should all 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 a little isolating oil (gas) with getting angry in pipeline
Rubber pneumatic bag) should be inflated in advance, pressure be not less than 0.2Mpa, check for leaks.
2.5 plants are intact, and motor device ground connection is by checking, qualification.
2.6 construction 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 outside 2.9 operation areas should be set, and apparent mark is set.
2.10 operation hole planted agents set uplink and downlink ladder.
Ground stud is nearby installed in the oily perforate of 2.11 operation pipeline sections, band, and ground resistance is not more than 4 Ω.
2.12 pipe diameters are greater than or equal to the helix tube of 500mm, 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 ground 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 the regulation of JB/T 4736.
2 welding sequences
It should be carried out non-destructive testing after the completion of 3 welding.
In the first step, manually or electrically hole making drill can be used in hole making drill, to carry the perforate machinery of milling cutter and centre drill,
The device for needing to be connected to the short tube welded in advance on pipeline 6 and ball valve composition completes the oily perforate operation of band.What the first step was opened
For hole 10 of pumping, oil pumping hole 10 is the device of a flange short tube ball adding valve, and on the day of fire operation or the previous day welds in advance
It is connected on pipeline 6, then with drill perforate, aperture determines that normal conditions opening diameter is 50- regarding 6 specification size of main pipeline
200mm, aviation fuel are 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, need to be led in an oil extraction aperture apparatus of short tube and the valve composition that coming oil side ducts 6 are additionally arranged at the bottom
It is the excess oil in discharge conduit 6 in the welding process to want function, prevents the excessive pressure rising of excess oil from oil resistant rubber being caused to isolate gas
Capsule 7 fails and accident occurs, 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, during welding constantly into pipe weld inflated with nitrogen into line replacement.Carry out more effectively guarantor on fire
Shield.
Among step 7, into oil resistant rubber isolation air bag 7, aerating is to 0.2mpa.
Among step 8, after the completion of pipeline 6 welds, weld seam is carried out non-destructive testing, the spy is further 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, preservative treatment is carried out after qualified.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
- A kind of 1. band oil hot work method, which is characterized in that the band oil hot work method includes the following steps,Step 1 carries out perforate by hole making drill to the pipeline of required transformation, and the relief tube carried after perforate using hole making drill is 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 cleaning pipeline in iron filings, carefully cleaning cut The burr of face, polishing are clean；Step 3 carries out disconnected pipe in designated position；After step 4, pipeline disconnect, oil resistant rubber isolation air bag is placed into pipe immediately, the aerating into oil resistant rubber isolation air bag, Oil resistant rubber isolation air bag is made to reach sealing effect full of pipeline；Step 5 installs special clamping plate into pipeline, and 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；It is provided between the first clamping plate and the second clamping plate Refractory flexible body；By the tightening device, the refractory flexible body is squeezed, it is made to fill full packages road；The tightening device is used to reduce the distance between the first clamping plate and the second clamping plate and fix；Step 6, with the gas concentration in gas concentration detector inspection opening pipeline, confirm gas concentration not in explosive range It is interior, it then installs isometrical special three and passes to precalculated position；The isometrical special threeway includes threeway body and sealing plate；A circle connecting flange ring is welded in wherein the first branch pipe of the threeway body；The connecting flange ring and the sealing plate It is detachably connected；Second branch pipe of the threeway body is for affixed with original seal for pipe joints, and the 3rd branch pipe is used for and new plus pipe Road sealing is affixed；The special clamping plate may pass through the connecting flange ring and take out for blocking original pipeline；Step 7, progress Pipeline butt connect；Step 8 isolates air bag by the special clamping plate in the isometrical special threeway taking-up pipeline and the oil resistant rubber Afterwards, the sealing plate of isometrical special threeway, welding tee closing end socket are installed.
- 2. band oil hot work method according to claim 1, which is characterized in that among step 4, the oil resistant rubber Isolation air bag should be left beyond the point 1m that gets angry.
- 3. band oil hot work method according to claim 1, which is characterized in that among step 7, during welding constantly to Weld inflated with nitrogen is into line replacement in pipe.
- 4. band oil hot work method according to claim 1, which is characterized in that among step 7, to oil resistant rubber every From aerating in air bag to 0.2mpa.
- 5. band oil hot work method according to claim 1, which is characterized in that among step 8, pipeline welding is completed Afterwards, weld seam is carried out non-destructive testing, the special clamping plate and oil resistant rubber isolation air bag is further taken out after detection is qualified.
- 6. band oil hot work method according to claim 1, which is characterized in that among step 8, welding tee closing After end socket, to weld seam non-destructive testing, preservative treatment is carried out after qualified.
- 7. band oil hot work method according to claim 1, which is characterized in that the tightening device includes screw rod, institute Screw rod is stated through vertical with the side of the first clamping plate affixed after the second clamping plate；Nut, institute are bolted on the screw rod It states nut and is connected to the second clamping plate one side opposite with the first clamping plate.
- 8. band oil hot work method according to claim 7, which is characterized in that the screw rod is located at the first clamping plate Center at.
- 9. band oil hot work method according to claim 1, which is characterized in that the first clamping plate and second folder More leads are provided between plate.
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)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152578A CN107152578A (en) | 2017-09-12 |
| CN107152578B true CN107152578B (en) | 2018-05-25 |
Family
ID=59795941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710409863.8A Active CN107152578B (en) | 2017-06-02 | 2017-06-02 | Pipeline modification device and with oily hot work method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152578B (en) |
Families Citing this family (1)
| 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 |
Citations (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 |
| CN103912758A (en) * | 2014-04-22 | 2014-07-09 | 钊田 | High-performance online pipeline plugging device and plugging method thereof |
| 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 |
-
2017
- 2017-06-02 CN CN201710409863.8A patent/CN107152578B/en active Active
Patent Citations (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 |
| CN103912758A (en) * | 2014-04-22 | 2014-07-09 | 钊田 | High-performance online pipeline plugging device and plugging method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107152578A (en) | 2017-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10900861B2 (en) | Pipeline element leak detection system and method | |
| US4314577A (en) | Installation, hydrostatic testing, repair and modification of large diameter fluid transmission lines | |
| US4756338A (en) | Pipe repair assemblies to repair pipe when fluids therein are under high pressure | |
| JP6012901B2 (en) | Pipe closure device for separating tanks, pipes or sets of tanks and pipes | |
| CN105987253B (en) | Oil-gas pipeline method for blocking | |
| US6467811B2 (en) | Flanged connection repair device and method | |
| CN101862883A (en) | Fuel gas pipeline leakage pressurized blocking welding method | |
| CN107152578B (en) | Pipeline modification device and with oily hot work method | |
| EP2706021A1 (en) | A method for making an inner metal wall inside a tank and a tank having a double wall | |
| CN102937225B (en) | A kind of rapid link blocking method with pressure and device | |
| US7938136B1 (en) | Method for sealing taps | |
| US9636787B2 (en) | Non-welding apparatus for repair of an enclosure wall and methods for use thereof | |
| CN206988683U (en) | A kind of explosion-proof pipe plugging erecting device | |
| JP6370450B1 (en) | Double seal piping closing jig | |
| EP3497364B1 (en) | System and method for secondary containment of products conveyed by pipeline transport | |
| KR102157841B1 (en) | Damage replacement device and replacement method of the damaged pipe using the same | |
| RU181250U1 (en) | Device for sealing the internal cavity of the main pipeline | |
| RU2198340C1 (en) | Method of repair of main pipe lines | |
| CN208043564U (en) | A kind of metal containment integrality test pressure protective device | |
| CN219142103U (en) | Simple and convenient DBB double-closing double-breaking valve aviation kerosene pressure test device | |
| US3380762A (en) | Insulated pipe joint | |
| CN112618990B (en) | Emergency conveying and transferring method for leaked materials of dangerous chemical tank truck | |
| RU2601782C1 (en) | Method for pipeline restoration and device for implementation thereof | |
| CN217234869U (en) | Pressurized drainage leak-stopping welding band for liquid medium pipeline | |
| KR200479377Y1 (en) | Device for preventing leakage scatter on vertical pipe flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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. |
|
| CP03 | Change of name, title or address |