CN106988291A - The method that jacket is repaired at sea - Google Patents
The method that jacket is repaired at sea Download PDFInfo
- Publication number
- CN106988291A CN106988291A CN201710195374.7A CN201710195374A CN106988291A CN 106988291 A CN106988291 A CN 106988291A CN 201710195374 A CN201710195374 A CN 201710195374A CN 106988291 A CN106988291 A CN 106988291A
- Authority
- CN
- China
- Prior art keywords
- jacket
- spud leg
- reparation
- crackle
- repaired
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0034—Maintenance, repair or inspection of offshore constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
A kind of marine method for repairing jacket, using following reparation step：One：Jacket is detected；Two：Determine jacket recovery scenario；Three：For the above-water degree of impairment of jacket, repaired；Four：The reparation of the crackle to jacket underwater portion is completed in dry chamber.The present invention is when jacket at sea defect occurs, and it can be repaired by cutting the method changed to jacket；When fatal defect occur in the underwater sites of jacket, it can carry out defect repair operation by making welding procedure personnel be directly entered dry chamber to jacket；Not only solve the defect that jacket at sea occurs and be difficult to reparation problem；Moreover, also solving the defect occurred under water for jacket carries out reparation problem；Substantially increase the efficiency of construction at sea.
Description
Technical field
The present invention relates to jacket, more particularly to a kind of marine method for repairing jacket.Belong to Offshore Engineering neck
Domain.
Background technology
When jacket goes wrong on land, its repair can be easy to solve；But, once at sea install
After good, if jacket causes damage for some reason, the difficulty repaired to it will be greatly promoted, with very high
Challenge value.
At sea carry out before jacket reparation, it is most important that the determination to jacket faulted condition, then to jacket
Marine detection be essential.The marine detection of jacket is divided into：Detection waterborne and detect under water, for detection waterborne,
Need to send on the upper jacket of testing staff and checked；And detect under water, need to use underwater robot (ROV), sky latent even
Saturation diving equipment carries out the detection of jacket.Finally, by after testing result comprehensive analysis, then determine that this jacket repairs can
The meaning of energy property, the value repaired and reparation.
When the jacket built on the place of land is occurred in that because the reason such as force majeure or constructing operation error is made
The problems such as occurring the defects such as crackle into jacket damage, pad or the construction of jacket and larger design drawing deviation occur
When, site operation personnel are investigated produced problem at once, and propose solution；Generally, scene is existing
Somebody's power and work equipment resource can meet jacket recovery scenario implementation demand, even if the special equipment of temporary needs and
The personnel of specialty, within a very short time can also arrange related personnel in place.But, when jacket is at sea installed, by
When the problems such as the reasons such as force majeure causing jacket to occur damaging or jacket is locally deformed, it is with land to leading
Pipe support reparation is compared, and difficulty will be greatly increased；Therefore, the arrangement and method for construction of land jacket reparation where it also will be no longer applicable.
When at sea repairing jacket, in addition to underwater robot to be used (ROV) is detected to jacket under water, in addition it is also necessary to arrange tool
There is the diver for examining qualification to confirm the defect on jacket one by one, in addition it is also necessary to which land personnel arrangement discussion is asked with analysis
Topic etc., not only considerably increases the human and material resources and financial resources of project, moreover, also increasing the construction risk at sea and applying
The work duration.Simultaneously as offshore construction condition is severe, it is one very big for the implementation of jacket repair waterborne
Challenge.
The content of the invention
It is a primary object of the present invention to overcome the disadvantages mentioned above that prior art is present, and provide a kind of marine reparation conduit
The method of frame, when jacket at sea defect occurs, it can be repaired by cutting the method changed to jacket；When
When fatal defect occur in the underwater sites of jacket, it can be by making welding procedure personnel be directly entered dry chamber to conduit
Frame carries out defect repair operation；Not only solve the defect progress reparation problem that jacket above water occurs；Moreover, also solving
The defect that jacket underwater portion occurs carries out reparation problem；Substantially increase the efficiency of construction at sea.
The purpose of the present invention is realized by following technical scheme：
A kind of marine method for repairing jacket, it is characterised in that：Using following reparation step：
The first step：Jacket is detected；
(1) reference point of a reality is determined before the measurement of jacket is carried out, it is necessary on jacket, all measurements
Data all must be based on this reference point；
(2) detect and detected primarily directed to jacket node under water, and with underwater robot under water, such as find crackle
Or doubtful crackle, then crackle is carried out after nondestructiving inspecting test by diver, final judgement is made by testing staff；
Second step：The final jacket examining report submitted according to testing staff, determines jacket recovery scenario；
3rd step：Reparation for the above-water degree of impairment of jacket is as follows：
(1) when injury region is crack, REPAIR WELDING is carried out using welding manner；
(2), for the degree of impairment occurred at the top of spud leg, replacement is welded using excision damage location and with new spud leg cutting back
Cut off position；
(3) occur the more serious conditions such as tear for water balance fine strain of millet, take excision tear position, and change the side of short tube
Method is repaired；
(4), for the damaged condition of flase floor, the damaged position of flase floor is cut off, it is then, new in the place welding of excision
Flase floor；
(5) the in the case of of seriously offseting is produced for spud leg position, repaired using the method for cutting off and change spud leg；When
Jacket spud leg is subjected to displacement, and, it is necessary to first be resetted to spud leg during required when being installed beyond chunk precision.
4th step：The reparation of the crackle to jacket underwater portion is completed in dry chamber.
It is described before jacket detection waterborne is carried out, in addition it is also necessary to workmen travels far and wide jacket is enterprising according to actual needs
Hand cradle is built, in order to which testing staff measures work on jacket.
What the jacket spud leg resetted comprises the following steps that：
(1) several sections of spud legs will be changed after spud leg cut-out；
(2), by after spud leg cut-out, reinforcing plate is added in spud leg weld.
The cutting of the spud leg and replacing detailed process are as follows：
1. the part that spud leg is damaged is cut off, and grinding process is carried out to otch；
2. cofferdam is installed 1 meter below otch of position；
3. new spud leg cutting back is docked on otch, and the position of cutting back is adjusted；
4. weld job is carried out, is welded after finishing to weld inspection, after assay is qualified, weld seam is carried out at anti-corrosion
Reason.
When repairing jacket crack in the dry chamber, by the water in space after first crack is enclosed in closed space
Extract out, then, then holding equipment is arranged in confined space.
Beneficial effects of the present invention：The present invention is due to using above-mentioned technical proposal, when jacket at sea defect occurs,
It can be repaired by cutting the method changed to jacket；When there is fatal defect in the underwater sites of jacket,
It can carry out defect repair operation by making welding procedure personnel be directly entered dry chamber to jacket；Not only solve in sea
The defect that upper jacket occurs is difficult to reparation problem；Enter under water for the defect that jacket occurs moreover, also solving
Row reparation problem；Substantially increase the efficiency of construction at sea.
Brief description of the drawings
Fig. 1 is jacket schematic diagram of the present invention.
Fig. 2 is jacket spud leg crackle schematic diagram of the present invention.
Fig. 3 is dry chamber schematic diagram of the present invention.
Fig. 4 is that spud leg changes schematic diagram before one section of cutting back at the top of jacket of the present invention.
Fig. 4 A are that spud leg changes schematic diagram after one section of cutting back at the top of jacket of the present invention.
Fig. 5 is that spud leg changes schematic diagram before two sections of cutting backs at the top of jacket of the present invention.
Fig. 5 A are that spud leg changes schematic diagram after two sections of cutting backs at the top of jacket of the present invention.
Fig. 6 is to increase schematic diagram before reinforcing plate at the top of jacket of the present invention in spud leg.
Fig. 6 A are to increase schematic diagram after reinforcing plate at the top of jacket of the present invention in spud leg.
Major Symbol explanation in figure：
1. spud leg, 2. dry chambers.
Embodiment
As shown in Fig. 1-Fig. 6 A, the present invention uses following reparation step：
The first step：Jacket is detected；
The detection of jacket includes：Detection waterborne and detect under water；Detection work waterborne includes：Each spud leg on jacket
Each welding section in distance, the ovality of spud leg 1, the perpendicularity of spud leg 1, jacket between the absolute altitude on 1 summit, each spud leg 1
The state of point and the damaged condition of spud leg 1 etc.；
(1), it is necessary to which workmen is according to actual needs in the enterprising hand of traveling far and wide of jacket before jacket detection waterborne is carried out
Frame is built, in order to which testing staff measures work on jacket, meanwhile, carry out jacket measurement before, it is necessary to
The reference point of a reality is determined on jacket, the data of all measurements all must be based on this reference point；
(2) detect and detected primarily directed to jacket node under water, and with underwater robot under water, such as find crackle
Or doubtful crackle, then crackle is carried out after nondestructiving inspecting test by diver, final judgement is made by testing staff；
Second step：The final jacket examining report submitted according to testing staff, by unit in charge of construction's organizes expert meeting
Analysis discussion is carried out to testing result, jacket recovery scenario is determined；
The damage of jacket above water typically has：Pad occurs occurring penetrability between crackle, water balance fine strain of millet and spud leg 1
Crackle, the damage of the top of spud leg 1, level, which are weighed, occurs that tear, flase floor be impaired, the position of spud leg 1 produces serious skew in weld
Deng, for the above-water damage of jacket can take Crack Repairing, spud leg 1 cutting change etc. scheme；
As shown in Fig. 2 being repaired for jacket underwater portion：Can typically occur crackle or crack at pad, for
Shallow-layer crackle, crackle is removed using the method for polishing under water；And for crack, will need to be surrounded using dry chamber 2 at crack
Afterwards, the water in dry chamber 2 is excluded, fracture carries out REPAIR WELDING in dry chamber 2 by REPAIR WELDING personnel.
3rd step：The marine reparation of jacket；
For the above-water degree of impairment of jacket, restorative procedure is as follows：
1) when injury region is crack, REPAIR WELDING is carried out using welding manner；
2) degree of impairment occurred for the top of spud leg 1, using the method for excision damage location, and it is short with new spud leg 1
Cut welding and replace excision position；
3) occur the more serious conditions such as tear for water balance fine strain of millet, take excision tear position, the method for changing short tube
Repaired；
4) for the damaged condition of flase floor, the method repaired using flase floor, i.e.,：The damaged position of flase floor is cut
Remove, then, new flase floor is welded in the place of excision；
5) in the case of of seriously offseting is produced for the position of spud leg 1, is repaired using the method for cutting off and change spud leg 1；
But, when jacket spud leg 1 is subjected to displacement, and, it is necessary to first be carried out to spud leg 1 during required when being installed beyond chunk precision
Reset, i.e.,：When changing spud leg 1, by the polishing to soldering opening, the adjustment of butt welding mouth Plane Angle and to weld gap
Reconcile, to reach the purpose for resetting jacket.
The qualified normative reference of reset of the spud leg 1 of jacket is：
1) absolute altitude at the top of jacket spud leg 1 reaches design requirement；
2) levelness at the top of jacket spud leg 1 meets chunk installation requirement；
3) perpendicularity of jacket spud leg 1 meets Attention problems requirement；
4) spacing between jacket spud leg 1 can be corresponded with the spacing of spud leg on chunk 1, and difference is in error range
Within；
As shown in Fig. 4 to Fig. 6 A, there are three kinds for the reset mode of jacket spud leg 1：
1) one will be changed after the cut-out of spud leg 1 and saves spud leg 1；
2) two will be changed after the cut-out of spud leg 1 and saves spud leg 1；
3) by after the cut-out of spud leg 1, reinforcing plate is added in the weld of spud leg 1；It should be noted that：When cutting spud leg 1,
Cutting position is determined according to actual conditions, to avoid welding position from being influenceed by wave；When changing jacket spud leg 1, note
The reset direction at the top of spud leg 1 and angle during reset, meanwhile, weld bond needs appropriate angle.
If, the absolute altitude of jacket is 6 meters, when spud leg 1 offsets relatively small, can be from the side for changing one section of cutting back
Formula is resetted；When one section of cutting back, which can not meet reset, to be required, i.e.,：It can not meet at the top of the perpendicularity and spud leg 1 of spud leg 1
During levelness, it can be resetted from two sections of cutting back modes；If the resectable part of spud leg 1 is too short, so that change
Cutting back can not be divided to two sections of welding, at this point it is possible to by the way of a reinforcing plate is increased.
4th step：As shown in figure 3, completing the reparation of the crackle to jacket underwater portion in dry chamber；I.e.：By crack
After being enclosed in closed space by space water extract out, then, then by the life support equipments such as illuminating lamp, smoke extractor arrange
In confined space；Dry chamber 2 is after land formation is finished, it is necessary to carry out dry type storehouse pre-installation and jacket impaired loci on land
Preview is repaired, if conditions permit, the waterproof test of dry chamber 2 can be carried out.
The cutting of spud leg 1 and replacing detailed process are as follows：
(1) part spud leg 1 damaged is cut off, and carries out grinding process to otch；
(2) cofferdam is installed 1 meter below otch of position, this cofferdam is for preventing stormy waves to the shadow of weld job
Ring, and ensure construction safety；
(3) the new cutting back of spud leg 1 is docked on otch, and the position of cutting back is adjusted；
(4) weld job is carried out, is welded after finishing to weld inspection, after assay is qualified, weld seam is carried out at anti-corrosion
Reason.
After finding crackle occur on jacket under water, crackle under water is detected a flaw：
1) if diver can not be confirmed whether it is crackle, doubtful crackle can be temporarily regarded as, work need to be finally detected
Cheng Shi is further analyzed to identify；
2) if crackle is face crack, face crack can be removed with the mode of polishing；
If 3) crackle is relatively deep even breaks through tube wall, then, this crackle needs REPAIR WELDING in dry chamber 2 under water.
Because weld seam can be deformed after welding, and cause displacement or the generation internal stress of top tube etc. not true
When negatively affecting surely, in welding, it is contemplated that subregion welds to reduce this risk.
Above-mentioned dry chamber is prior art, and the technology of not specified (NS) is prior art.Therefore repeat no more.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, it is all
It is any simple modification, equivalent variations and the modification made according to the technical spirit of the present invention to above example, still falls within
In the range of technical solution of the present invention.
Claims (5)
1. a kind of marine method for repairing jacket, it is characterised in that：Using following reparation step：
The first step：Jacket is detected；
(1) reference point of a reality, the data of all measurements are determined before the measurement of jacket is carried out, it is necessary on jacket
All must be based on this reference point；
(2) detect and detected primarily directed to jacket node under water, and with underwater robot under water, such as find crackle or
Doubtful crackle, then crackle is carried out after nondestructiving inspecting test by diver, final judgement is made by testing staff；
Second step：The final jacket examining report submitted according to testing staff, determines jacket recovery scenario；
3rd step：Reparation for the above-water degree of impairment of jacket is as follows：
1) when injury region is crack, REPAIR WELDING is carried out using welding manner；
2) for the degree of impairment occurred at the top of spud leg, excision is replaced using excision damage location and with new spud leg cutting back welding
Position；
3) occur the more serious conditions such as tear for water balance fine strain of millet, take excision tear position, and change the method for short tube
Row is repaired；
4) for the damaged condition of flase floor, the damaged position of flase floor is cut off, then, new lattice are welded in the place of excision
Screen；
5) in the case of of seriously offseting is produced for spud leg position, is repaired using the method for cutting off and change spud leg；Work as conduit
Frame spud leg is subjected to displacement, and, it is necessary to first be resetted to spud leg during required when being installed beyond chunk precision.
4th step：The reparation of the crackle to jacket underwater portion is completed in dry chamber.
2. the marine method for repairing jacket according to claim 1, it is characterised in that：It is described waterborne in progress jacket
Before detection, in addition it is also necessary to which workmen builds in the enterprising hand cradle of traveling far and wide of jacket according to actual needs, in order to which testing staff is leading
Work is measured on pipe support.
3. the marine method for repairing jacket according to claim 1, it is characterised in that：What the jacket spud leg resetted
Comprise the following steps that：
(1) several sections of spud legs will be changed after spud leg cut-out；
(2), by after spud leg cut-out, reinforcing plate is added in spud leg weld.
4. the marine method for repairing jacket according to claim 1, it is characterised in that：The cutting of the spud leg and more
Change detailed process as follows：
1. the part that spud leg is damaged is cut off, and grinding process is carried out to otch；
2. cofferdam is installed 1 meter below otch of position；
3. new spud leg cutting back is docked on otch, and the position of cutting back is adjusted；
4. weld job is carried out, is welded after finishing to weld inspection, after assay is qualified, preservative treatment is carried out to weld seam.
5. the marine method for repairing jacket according to claim 1, it is characterised in that：Conduit is repaired in the dry chamber
During frame crack, the water in space is extracted out after first crack is enclosed in closed space, then, then holding equipment is arranged in
In confined space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195374.7A CN106988291B (en) | 2017-03-29 | 2017-03-29 | The method that jacket is repaired at sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195374.7A CN106988291B (en) | 2017-03-29 | 2017-03-29 | The method that jacket is repaired at sea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988291A true CN106988291A (en) | 2017-07-28 |
| CN106988291B CN106988291B (en) | 2019-02-01 |
Family
ID=59412994
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195374.7A Active CN106988291B (en) | 2017-03-29 | 2017-03-29 | The method that jacket is repaired at sea |
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| Country | Link |
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| CN (1) | CN106988291B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549069A (en) * | 2019-07-15 | 2019-12-10 | 中国南方航空股份有限公司 | Method for repairing damage of anti-icing pipeline of engine air inlet |
| CN110952520A (en) * | 2019-10-14 | 2020-04-03 | 广州文冲船舶修造有限公司 | Pile leg rack detection and repair process of self-elevating platform |
| CN112091527A (en) * | 2020-09-21 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | High-reliability repair method for short annular metal plate flame tube |
| CN113369807A (en) * | 2021-05-27 | 2021-09-10 | 武汉凌科航空复材有限责任公司 | Method and device for manufacturing and repairing metal guide pipe in airplane maintenance process |
| CN115338594A (en) * | 2022-07-01 | 2022-11-15 | 中国航发南方工业有限公司 | Air tightness repairing method for conduit in combined cavity of rear support shell |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549069A (en) * | 2019-07-15 | 2019-12-10 | 中国南方航空股份有限公司 | Method for repairing damage of anti-icing pipeline of engine air inlet |
| CN110549069B (en) * | 2019-07-15 | 2022-04-05 | 中国南方航空股份有限公司 | Method for repairing damage of anti-icing pipeline of engine air inlet |
| CN110952520A (en) * | 2019-10-14 | 2020-04-03 | 广州文冲船舶修造有限公司 | Pile leg rack detection and repair process of self-elevating platform |
| CN110952520B (en) * | 2019-10-14 | 2021-03-23 | 广州文冲船舶修造有限公司 | Pile leg rack detection and repair process of self-elevating platform |
| CN112091527A (en) * | 2020-09-21 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | High-reliability repair method for short annular metal plate flame tube |
| CN113369807A (en) * | 2021-05-27 | 2021-09-10 | 武汉凌科航空复材有限责任公司 | Method and device for manufacturing and repairing metal guide pipe in airplane maintenance process |
| CN113369807B (en) * | 2021-05-27 | 2024-03-29 | 凌云(宜昌)航空装备工程有限公司 | Manufacturing and repairing method and manufacturing and repairing device for metal conduit in aircraft maintenance process |
| CN115338594A (en) * | 2022-07-01 | 2022-11-15 | 中国航发南方工业有限公司 | Air tightness repairing method for conduit in combined cavity of rear support shell |
| CN115338594B (en) * | 2022-07-01 | 2024-02-20 | 中国航发南方工业有限公司 | Air tightness repairing method for catheter in combined cavity of rear bearing shell |
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| Publication number | Publication date |
|---|---|
| CN106988291B (en) | 2019-02-01 |
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