CN106184611A - The construction of the pillar of FPSO seawater lift pump and hoisting - Google Patents
The construction of the pillar of FPSO seawater lift pump and hoisting Download PDFInfo
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- CN106184611A CN106184611A CN201610583568.XA CN201610583568A CN106184611A CN 106184611 A CN106184611 A CN 106184611A CN 201610583568 A CN201610583568 A CN 201610583568A CN 106184611 A CN106184611 A CN 106184611A
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- pillar
- platform
- lift pump
- hendecyl
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses the build process of the pillar of FPSO seawater lift pump, including S1: build superstructure and substructure of the pillar of seawater lift pump respectively；S2: position substructure of the pillar of seawater lift pump on the reserved location of hull, and it is interfaced to lift superstructure；S3: the platform in described superstructure docks with hull platform.Meanwhile, this case also discloses the build process of the pillar of FPSO seawater lift pump, including T1: lifts hendecyl section upper hull and installs location；T2: make location adjusting device；T3: make guide plate；T4: the superstructure of pillar is docked with hendecyl section and is welded and fixed.The pillar of this seawater lift pump is split up into longer superstructure and builds with shorter substructure two parts, after avoiding pillar structure entirety application, paint breakage is there is in hoisting process, reduce and repeat the application duration, be the most both easily controlled the difficulty carrying out local repair paint after lifting precision also reduces pillar structure installation.
Description
Technical field
The present invention relates to construction and the hoisting of a kind of pipeline section, the especially construction of the pillar of design FPSO seawater lift pump
And hoisting.
Background technology
Along with the development of world industrial economy, deepwater oilfield is gradually developed, and deep sea drilling and production platform quantity are continuous
Increasing, FPSO ship (Floating Production Storage and Offloading Floating Production Storage easing gear) is made
For relatively advanced deep-sea production platform, it is built or the demand of repacking is also continuously increased.Seawater lift pump is that on FPSO, institute is necessary
Component, it works under sea level and rises on FPSO platform by sea water by lifting pipe, and it sets for other on FPSO
Standby offer cooling water and industrial water.It is operated in inside sea water due to seawater lift pump throughout the year, steady for ensureing its service behaviour
Fixed, generally to build one section of pillar and allow seawater lift pump be fixed on bottom the tube chamber of pillar to work, so can effectively subtract
Vibration during slow seawater lift pump operating is avoided that again halobiontic winding, can install primary in the top tube chamber of pillar simultaneously
Sea water purifier sea water that seawater lift pump is elevated carry out preliminary purification.
Owing to the pillar inner chamber of seawater lift pump needs to install the miscellaneous part such as seawater lift pump, sea water purifier, institute
During to build, circularity and linearity to the pillar of seawater lift pump require higher, simultaneously because pillar bottom is throughout the year in sea water
Face works, so needing the special anti-corrosion protection of comparison.And the conventional construction of pipeline section and hoisting are all integrally to build and hang
Dress, this collides and damages the external coating of pillar of seawater lift pump unavoidably in work progress, even can affect the circle of pillar
Degree and linearity, do remediation after the damage that collides again, and the total quality of the pillar of seawater lift pump will be beaten greatly
Discount.After pillar damages deformation, the secondary that the later stage is carried out on hull is constructed its efficiency of construction and the antiseptic effect of secondary application
The most adversely effected, this adds the maintenance cost in construction cost and later stage virtually.
Summary of the invention
It is an object of the invention to provide a kind of construction precision high, later maintenance cost low FPSO seawater lift pump
The construction of pillar and hoisting.
The present invention is achieved by the following technical solutions, the build process of the pillar of FPSO seawater lift pump, wherein
The pillar internal diameter of FPSO seawater lift pump is 1.1m, a length of 32.3m, and it is divided into the first base segment to the 11st from top to bottom
Base segment, described first base segment collectively forms the superstructure of the pillar of this seawater lift pump to the tenth base segment and a top flange,
Hendecyl section and a flange in the bottom collectively form substructure of the pillar of this seawater lift pump, protecting of FPSO seawater lift pump
The build process of pipe, comprises the following steps:
S1: build superstructure and substructure of the pillar of seawater lift pump respectively, this step comprises the following steps:
S11: with veneer reeling machine, substrate is rolled into respectively 11 tubular base segments, and is designated the first base segment to hendecyl
Section, each of which part base segment is during roll bending, and timing uses 120 degree of sector works that internal diameter is equal with the pillar of seawater lift pump
Dress carrys out the crooked radian of inspection substrate；After each base segment completes, it is slightly less than the pillar of described seawater lift pump with internal diameter
The annular frock of internal diameter detect the circularity of base segment.
S12: base segment longitudinal slot welds, and the longitudinal slot on base segment tube wall in described S11 is processed into welding by this step
Groove sealing weld form it into longitudinal measure zone, and the sealing weld technique of described longitudinal measure zone is: a) the outer groove point of base segment pipe
Weldering → b) base segment pipe external outer arc shape code plate interval also registration → c) welding base segment pipe internal groove → d) remove described outer arcuate
Code plate → e) base segment pipe outside weld catching groove → f) manage interior inner arc shape code plate interval registration → g) weld groove outside base segment pipe.
S13: base segment is spliced into splice sections, splice sections is butted into trunnion, and this step is first same by the second base segment to the 4th base segment
Axle is spliced into the first splice sections, the 5th base segment to the 7th base segment is coaxially spliced into the second splice sections, the 8th base segment to the tenth base segment
Coaxially it is spliced into the 3rd splice sections, then the first splice sections, the second splice sections, the 3rd splice sections are coaxial docking into a trunnion, should
In step, the longitudinal measure zone of adjacent two pieces base segment staggers 180 degree the most in the axial direction.
S14: top flange, the first base segment, trunnion is integrally welded, forms the top of the pillar of described seawater lift pump
Structure；By integrally welded to bottom flange, hendecyl section, form substructure of the pillar of seawater lift pump.
S15: interval welding the first platform, the second platform, the 3rd platform and the successively on the outer wall of described superstructure
Four platforms, square described first platform, the second platform, the 3rd platform and the 4th platform the most vertically entangle described superstructure
Outer wall.
S16: respectively to described superstructure, substructure and the first platform, the second platform, the 3rd platform, the 4th platform
Painting anticorrosion coating.
S2: position substructure of the pillar of seawater lift pump on the reserved location of hull, and lift superstructure with
Its docking.
S3: described first platform docks with main ship deck；Described second platform docks with hull two-layer platform；Described
Three layers of platform of three platforms and hull dock；Four layers of platform of described 4th platform and hull dock.
Further, in described step S13, base segment is carried out splicing welding or splice sections carry out docking welding before, use
The trunnion that the mode drawing steel wire to survey straight line ensures to make linearity.Both at some base segment two of the coaxial placement of level
0 ° of tube wall circular arc, 90 °, determine three groups of datum marks respectively on 180 ° of positions, and correspondence is often organized and is drawn a steel wire between datum mark,
Determined the depth of parallelism of each base segment by the distance of spacing measuring steel wire Yu base segment tube wall, and then determine that the axle center of each part base segment is
No on the same line, if the linearity margin of tolerance is beyond ± 2mm, then revise the placement attitude of base segment.
Further, in described step S13, base segment is carried out splicing welding or splice sections carry out docking welding time, first will
The base segment mouth of pipe is processed into bevel for welding and sealing weld forms it into annular solder zone, the sealing weld technique of described annular solder zone
For: h) base segment pipe outer ring groove spot welding → i) base segment pipe external outer arc shape code plate interval registration → j) in welding base segment pipe
Annular groove → k) remove described outer arc shape code plate → l) base segment pipe outer ring weld seam catching groove → m) use inner arc shape code in base segment pipe
Plate interval registration → n) the outer groove of welding base segment pipe.
Further, described step j) and n) in, when circular weld is welded, use the mode that is symmetrically welded, both in institute
State and synchronize to weld on the axial symmetry point of annular solder zone.
Further, described outer arc shape code plate is the square plate of arc-shaped recess, its circular arc internal diameter and described sea water
The pillar of elevator pump is equal, arc top of its depression to corresponding thereto distance not less than 200mm；Described inner arc shape code plate
Being the square plate of arc evagination on one side, its circular arc internal diameter is equal with the pillar of described seawater lift pump, and the arc top of its evagination is extremely
The distance on one side corresponding thereto is not less than 200mm.
Meanwhile, the present invention also provides for the hoisting of the pillar of a kind of FPSO seawater lift pump, comprises the following steps:
T1: lift hendecyl section upper hull and install location；
T2: make location adjusting device, described location adjusting device totally four groups, and encompass 0 °, 90 °, 180 °, 270 ° of peaces
It is contained on the outer wall of the tenth base segment and hendecyl section；Each group of location adjusting device includes on one regulating block and once regulates
Block, described upper regulating block is arranged on the outer wall of the tenth base segment, lower regulating block correspondence is arranged on the outer wall of hendecyl section so that institute
State the jack placed on lower regulating block to withstand on this regulating block and allow the superstructure of pillar dock with hendecyl section.
T3: make guide plate, described guide plate totally four pieces around at 45 °, 135 °, 225 °, 315 ° of settings be arranged on the tenth
On the outer wall of one base segment, and interlocking with described location adjusting device, described guide plate upwardly extends the top exceeding hendecyl section
Face, and the part exceeding the end face of hendecyl section cuts with guiding hypotenuse so that the hypotenuse of four pieces of described guide plates is collectively forming
One opening upwards tubaeform.
T4: the superstructure of pillar is docked with hendecyl section and is welded and fixed, in this step, first lifts by crane described pillar
Superstructure to directly over hendecyl section, and keep itself and hendecyl section almost coaxial by guide plate, by pillar
Superstructure slowly declines close to hendecyl section, and the top having stepped through the jack fine setting pillar in location adjusting device is tied
Structure, be welded and fixed when the superstructure of pillar is the most coaxial with hendecyl section annular docking port make the superstructure of pillar with
Hendecyl section is integral.
Compared to prior art, the construction of the pillar of the FPSO seawater lift pump of the present invention and the beneficial effect of hoisting
It is:
The pillar of seawater lift pump is split up into longer superstructure and shorter substructure two by this build process
Dividing and build, carry out lifting again and close up after having built, superstructure length reaches 30m and substructure only has about 3m, top
Structure and substructure special anticorrosive paint of equal application, such length segment design can farthest avoid pillar structure whole
After body application, hoisting process occurs paint breakage, effectively reduces and repeat the application duration；Substructure of pillar is close to depressed place
The end, need outside its intracavity the miscellaneous parts such as seawater lift pump are installed, be designed to short tube and pillar both can have been facilitated overall and other equipment
Fixed and positioned, be also convenient for that on substructure location adjusting device and guide plate are installed and assist raising pillar superstructure
Lifting precision, carry out the difficulty of local repair paint after also reducing pillar structure installation；Further, the construction of base segment pipe
Process uses easy fan-shaped frock and annular frock to measure the circularity of pipe, the most simple and convenient but also can reach precision controlling and want
Ask, trunnion building course use draw the way of steel wire to control the linearity of trunnion, these whip desirable easy device and sides
Method can reach the required precision of pillar can effectively reduce again production cost.
In order to enable the apparent understanding present invention, illustrate to illustrate the preferably embodiment party of the present invention below with reference to accompanying drawing
Formula.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pillar of the FPSO seawater lift pump of the present invention.
Fig. 2 is the structural representation of arc frock in the present invention.
Fig. 3 is the structural representation of annular frock in the present invention.
Fig. 4 is base segment butt-joint process schematic diagram in the present invention.
Fig. 5 is the structural representation of outer arcuate code plate in the present invention.
Fig. 6 is the structural representation of inner arc shape code plate in the present invention.
Fig. 7 is the sealing weld process schematic representation of longitudinal measure zone in the present invention.
Fig. 8 is the scheme of installation of location adjusting device in hoisting of the present invention.
Fig. 9 is the scheme of installation of guide plate in hoisting of the present invention.
Detailed description of the invention
It is the structural representation of the pillar of the FPSO seawater lift pump of the present invention please refer to Fig. 1 to Fig. 7, Fig. 1, Fig. 2
Being the structural representation of arc frock in the present invention, Fig. 3 is the structural representation of annular frock in the present invention, and Fig. 4 is the present invention
Middle base segment butt-joint process schematic diagram, Fig. 5 is the structural representation of outer arcuate code plate in the present invention, and Fig. 6 is arc in the present invention
The structural representation of code plate, Fig. 7 is the sealing weld process schematic representation of longitudinal measure zone in the present invention.
The construction of the pillar of FPSO seawater lift pump of the present invention and the pillar 100 of hoisting seawater lift pump to be built
Being positioned at FPSO ship starboard wing tank, it is vertical sequentially passes through main ship deck, hull two-layer platform, three layers of platform of hull, hull four
Layer platform and hull base plate, its internal diameter Ф is 1.1m, length L is 32.3m, weight is about 36 tons.Protecting of described seawater lift pump
The equal welded flange in pipe 100 top and bottom is used for connecting other workpieces, and pillar main body is divided into the first base from top to bottom
Section 101 is to hendecyl section 111, and wherein top flange, the first base segment 101 collectively form this seawater lift to the tenth base segment 110
The superstructure 160 of the pillar 100 of pump, the most a length of 3m of each base segment of described superstructure 160, hendecyl section 111 and the end
Portion's flange collectively forms substructure 170 of the pillar 100 of this seawater lift pump, a length of 2.3m of hendecyl section 111.First base
The pipe thickness of section and 101 hendecyl sections 111 is 35mm, and the pipe thickness of the second base segment 102 to the tenth base segment 110 is
25mm.On the outer wall of described superstructure 160, perpendicular separation is welded with first platform the 181, second platform the 182, the 3rd platform 183
And the 4th platform 184 and main ship deck, hull two-layer platform, three layers of platform of hull, four layers of platform of hull are corresponding.
The build process of the pillar 100 of described FPSO seawater lift pump, comprises the following steps:
S1: build superstructure 160 and substructure 170 of the pillar 100 of seawater lift pump respectively, this step include with
Lower step:
S11: with veneer reeling machine, substrate is rolled into respectively 11 tubular base segments, and is designated the first base segment 101 to the tenth
One base segment 111, each of which part base segment is during roll bending, and 120 degree of fan-shaped frocks 200 that timing uses internal diameter to be 1.1m are examined
Test the crooked radian of substrate；After each base segment completes, detect the circle of base segment by the annular frock 220 that internal diameter is 1.1m
Degree, to guarantee the arc accuracy of each base segment.
Described fan-shaped frock 200 is that sector made by a plank, and its radian measure alpha 1 is 120 °, its internal diameterFor 1100mm, it is used for
Measure the curling circularity of substrate.
Described annular frock 220 is that annular made by a plank, its internal diameterFor 1095mm, it is used for measuring the curling circle of substrate
Degree.
S12: base segment longitudinal slot welds, and the longitudinal slot on base segment tube wall in described S11 is processed into welding by this step
Groove sealing weld form it into longitudinal measure zone 141, and the sealing weld technique of described longitudinal measure zone 141 is: a) outside base segment pipe
Groove spot welding → b) 3 outer arc shape code plate 240 interval also registration → c of base segment pipe external) welding base segment pipe internal groove → d) remove
Arc code plate 240 → e except as noted) base segment pipe outside weld catching groove → f) manage interior 3 inner arc shape code plates 241 intervals registration
→ g) the outer groove of welding base segment pipe.
Described outer arc shape code plate 240 is the square plate of arc-shaped recess on one side, and its circular arc internal diameter is 1100mm, its depression
The distance on arc top to one side corresponding thereto is not less than 200mm to guarantee that outer arc shape code plate 240 has enough intensity.Outside described
Arc code plate 240 clasps the outer wall of base segment along camber line and is welded and fixed so that it is the most variable that base segment closes up stress in welding process
Shape.
Described inner arc shape code plate 241 is the square plate of arc evagination on one side, and its circular arc internal diameter is 1100mm, its evagination
The distance on arc top to one side corresponding thereto is not less than 200mm to guarantee that inner arc shape code plate 241 has enough intensity.In described
Arc code plate 241 is adjacent to the inwall of base segment along camber line and is welded and fixed so that it is the most variable that base segment closes up stress in welding process
Shape.
S13: base segment is spliced into splice sections, splice sections is butted into trunnion 164, this step first by the second base segment 102 to the 4th
Base segment 104 is coaxially spliced into the first splice sections the 161, the 5th base segment 105 and is coaxially spliced into the second splice sections to the 7th base segment 107
162, the 8th base segment 108 to the tenth base segment 110 is coaxially spliced into the 3rd splice sections 163, then the first splice sections 161, second is spelled
The section of connecing the 162, the 3rd splice sections 163 is coaxial docking into a trunnion 164.The longitudinal measure zone of adjacent two pieces base segment in this step
141 stagger 180 degree the most in the axial direction.
Further, in this step, base segment is carried out splicing welding or splice sections carry out docking welding before, use draw steel wire to survey
The trunnion 164 that the mode of straight line ensures to make linearity.Both at the pipe at some base segment two of the coaxial placement of level
0 ° of wall circular arc, 90 °, determine three groups of datum marks respectively on 180 ° of positions, and correspondence is often organized and is drawn a steel wire between datum mark, passes through
Determine the depth of parallelism of each base segment every the distance of 500mm measuring steel wire Yu base segment tube wall, and then determine the axle center of each part base segment
The most on the same line, if the linearity margin of tolerance is beyond ± 2mm, then the placement attitude of base segment is revised.
Further, in this step, base segment is carried out splicing welding or splice sections carry out docking welding time, first by the base segment mouth of pipe
Being processed into bevel for welding and sealing weld forms it into annular solder zone 142, the sealing weld technique of described annular solder zone 142 is:
H) manage outer groove spot welding → i) outer arc shape code plate 240 interval outside pipe registration → j) welded pipe internal groove → k) and remove described in
Outer arc shape code plate 240 → l) weld seam catching groove → m) inner arc shape code plate 241 interval in pipe registration → n) the outer groove of welded pipe.
Further, when described j) step and n) step welding, in order to reduce the welding deformation of base segment or splice sections, use
The mode being symmetrically welded, both synchronized to weld on the axial symmetry point of described annular solder zone 142.
S14: by top flange, the first base segment 101, the pillar of the described seawater lift pump of the integrally welded formation of trunnion 164
The superstructure 160 of 100；By bottom flange, the pillar 100 of hendecyl section 111 integrally welded formation seawater lift pump
Substructure 170.
S15: first platform the 181, second platform the 182, the 3rd is welded at interval successively on the outer wall of described superstructure 160
Platform 183 and the 4th platform 184, the first platform the 181, second platform the 182, the 3rd platform 183 and the 4th equal vertical sleeve of platform 184
The tube wall of superstructure 160 is stated in residence.Described first platform 181 is integrally welded with main ship deck for the later stage；Second is flat
Platform 182 is integrally welded with hull two-layer platform for the later stage；3rd platform 183 becomes for three layers of platform welding of later stage and hull
Integrally；4th platform 184 is integral for four layers of platform welding of later stage and hull.So can be prevented effectively from protecting of seawater lift pump
Pipe 100 in later stage hoisting process outer wall anticorrosive paint by accidental injury.
S16: flat to described superstructure 160, substructure 170 and first platform the 181, second platform the 182, the 3rd respectively
Platform the 183, the 4th platform 184 painting anticorrosion coating.
S2: position substructure 170 of the pillar 100 of seawater lift pump on the reserved location of hull, and lift top
Structure 160 is interfaced.
S3: described first platform 181 docks with main ship deck；Described second platform 182 docks with hull two-layer platform；
Three layers of platform of described 3rd platform 183 and hull dock；Four layers of platform of described 4th platform 184 and hull dock.
Please refer to Fig. 8 and Fig. 9, meanwhile, the present invention also provides for the lifting of pillar 100 of a kind of FPSO seawater lift pump
Technique, comprises the following steps:
T1: lift hendecyl section 111 upper hull and install location；
T2: make location adjusting device 250, described location adjusting device 250 totally four groups, and encompass 0 °, 90 °, 180 °,
270 ° are arranged on the outer wall of the tenth base segment 110 and hendecyl section 111；Each group of location adjusting device 250 includes a rise
Locking nub 251 and once regulating block 252, described upper regulating block 251 is arranged on the outer wall of the tenth base segment 110, lower regulating block 252 correspondence
It is arranged on the outer wall of hendecyl section 111 so that the jack 253 placed on described lower regulating block 252 can withstand this rise
Locking nub 251 also allows the superstructure 160 of pillar dock with hendecyl section 111.
T3: make guide plate 260, described guide plate 260 totally four pieces around at 45 °, 135 °, 225 °, 315 ° erect install
On the outer wall of hendecyl section 111, and interlocking with described location adjusting device 250, described guide plate 260 upwardly extends and exceeds
The part of the end face of hendecyl section 111 and the end face that exceeds hendecyl section 111 cuts with guiding hypotenuse so that lead described in four pieces
Hypotenuse to plate 260 is collectively forming the tubaeform of an opening upwards.
T4: dock and be welded and fixed superstructure 160 and the hendecyl section 111 of pillar, in this step, first lifting is described
The superstructure 160 of pillar 100 is to directly over hendecyl section 111, and keeps itself and hendecyl section 111 base by guide plate
This is coaxial, slowly declines the superstructure 160 of pillar close to hendecyl section 111, has stepped through in location adjusting device 250
The axis of superstructure 160 of jack fine setting pillar 100, when superstructure 160 and the hendecyl section 111 of pillar 100
The superstructure 160 that time the most coaxial, the annular docking port of welding makes pillar is integral with hendecyl section 111.
The invention is not limited in above-mentioned embodiment, if various changes or deformation to the present invention are without departing from the present invention
Spirit and scope, if these are changed and within the scope of deformation belongs to claim and the equivalent technologies of the present invention, then this
Bright being also intended to comprises these changes and deformation.
Claims (6)
- The build process of the pillar of 1.FPSO seawater lift pump, wherein the pillar of FPSO seawater lift pump is divided into from top to bottom First base segment collectively forms this seawater lift pump to hendecyl section, described first base segment to the tenth base segment and a top flange The superstructure of pillar, hendecyl section and a flange in the bottom collectively form substructure of the pillar of this seawater lift pump, The build process of the pillar of FPSO seawater lift pump, it is characterised in that: comprise the following steps:S1: building superstructure and substructure of the pillar of seawater lift pump respectively, step S1 comprises the following steps:S11: substrate is rolled into respectively 11 tubular base segments with veneer reeling machine, and it is designated the first base segment to hendecyl section, Each of which part base segment is during roll bending, and timing uses 120 degree of sector frocks that internal diameter is equal with the pillar of seawater lift pump Carry out the crooked radian of inspection substrate；After each base segment completes, it is slightly less than the pillar of described seawater lift pump with internal diameter The annular frock of internal diameter detects the circularity of base segment.S12: base segment longitudinal slot welds, and the longitudinal slot on base segment tube wall in described S11 is processed into bevel for welding by this step And sealing weld forms it into longitudinal measure zone, the sealing weld technique of described longitudinal measure zone is: a) the outer groove spot welding of base segment pipe → B) base segment pipe external outer arc shape code plate interval registration → c) welding base segment pipe internal groove → d) remove described outer arc shape code plate → e) base segment pipe outside weld catching groove → f) manage interior inner arc shape code plate interval registration → g) weld groove outside base segment pipe.S13: base segment is spliced into splice sections, splice sections is butted into trunnion, and the second base segment is first coaxially spelled by this step to the 4th base segment Be connected into the first splice sections, the 5th base segment to the 7th base segment is coaxially spliced into the second splice sections, the 8th base segment is coaxial to the tenth base segment It is spliced into the 3rd splice sections, then the first splice sections, the second splice sections, the 3rd splice sections are coaxial docking into a trunnion, this step In the longitudinal measure zone of adjacent two pieces base segment stagger 180 degree the most in the axial direction.S14: top flange, the first base segment, trunnion is integrally welded, forms the top knot of the pillar of described seawater lift pump Structure；By integrally welded to bottom flange, hendecyl section, form substructure of the pillar of seawater lift pump.S15: the first platform, the second platform, the 3rd platform and Siping City are welded in interval successively on the outer wall of described superstructure Platform, square described first platform, the second platform, the 3rd platform and the 4th platform the most vertically entangle outside described superstructure Wall.S16: respectively to described superstructure, substructure and the first platform, the second platform, the 3rd platform, the 4th platform application Anticorrosive paint.S2: position substructure of the pillar of seawater lift pump on the reserved location of hull, and it is right with it to lift superstructure Connect.S3: described first platform docks with main ship deck；Described second platform docks with hull two-layer platform；Described 3rd flat Three layers of platform of platform and hull dock；Four layers of platform of described 4th platform and hull dock.
- 2. the build process of the pillar of FPSO seawater lift pump as claimed in claim 1, it is characterised in that: described step S13 In, base segment is carried out splicing welding or splice sections carry out docking welding before, use draw steel wire survey straight line mode ensure to make Trunnion linearity, both in 0 ° of tube wall circular arc, 90 °, 180 ° of positions at some base segment two of the coaxial placement of level Upper determine three groups of datum marks respectively, and correspondence is often organized and drawn a steel wire between datum mark, by spacing measuring steel wire and base segment tube wall Distance determine the depth of parallelism of each base segment, and then determine the axle center of each part base segment the most on the same line, as linearity is public Difference scope beyond ± 2mm, then revises the placement attitude of base segment.
- 3. the build process of the pillar of FPSO seawater lift pump as claimed in claim 1, it is characterised in that: described step S13 In, base segment is carried out splicing welding or splice sections carry out docking welding time, first the base segment mouth of pipe is processed into bevel for welding sealing weld Forming it into annular solder zone, the sealing weld technique of described annular solder zone is: h) base segment pipe outer ring groove spot welding → i) Base segment pipe external outer arc shape code plate interval registration → j) welding base segment pipe annular groove → k) remove described outer arc shape code Plate → l) base segment pipe outer ring weld seam catching groove → m) in base segment pipe with inner arc shape code plate interval registration → n) welding base segment pipe Outer groove.
- 4. the build process of the pillar of FPSO seawater lift pump as claimed in claim 3, it is characterised in that: described step j) and N), in, when circular weld is welded, use the mode being symmetrically welded, both synchronized on the axial symmetry point of described annular solder zone Weld.
- 5. the build process of the pillar of the FPSO seawater lift pump as described in claim 2,4, it is characterised in that: described outer arc Shape code plate is the square plate of arc-shaped recess on one side, and its circular arc internal diameter is equal with the pillar of described seawater lift pump, its depression The distance on arc top to one side corresponding thereto is not less than 200mm；Described inner arc shape code plate is the square plate of arc evagination on one side, Its circular arc internal diameter is equal with the pillar of described seawater lift pump, the arc top of its evagination to corresponding thereto distance be not less than 200mm。
- The hoisting of the pillar of 6.FPSO seawater lift pump, it is characterised in that: comprise the following steps:T1: lift hendecyl section upper hull and install location；T2: make location adjusting device, described location adjusting device totally four groups, and encompass 0 °, 90 °, 180 °, 270 ° and be arranged on On the outer wall of the tenth base segment and hendecyl section；Each group of location adjusting device includes on one regulating block and once regulating block, institute State that regulating block is arranged on the outer wall of the tenth base segment, lower regulating block correspondence is arranged on the outer wall of hendecyl section so that under described The jack placed on regulating block can withstand on this regulating block and allow the superstructure of pillar dock with hendecyl section.T3: make guide plate, described guide plate totally four pieces around at 45 °, 135 °, 225 °, 315 ° of settings be arranged on hendecyl On the outer wall of section, and interlocking with described location adjusting device, described guide plate upwardly extends the end face exceeding hendecyl section, and The part of the end face exceeding hendecyl section cuts with guiding hypotenuse so that the hypotenuse of four pieces of described guide plates is collectively forming an opening Upwards tubaeform.T4: the superstructure of pillar is docked with hendecyl section and is welded and fixed, in this step, first lifts by crane the upper of described pillar Portion's structure is to directly over hendecyl section, and keeps itself and hendecyl section almost coaxial by guide plate, by the top of pillar Structure slowly declines close to hendecyl section, has stepped through the jack in location adjusting device and finely tunes the superstructure of pillar, It is welded and fixed annular docking port when the superstructure of pillar is the most coaxial with hendecyl section and makes the superstructure of pillar and the Hendecyl section is integral.
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| CN111605678A (en) * | 2020-05-28 | 2020-09-01 | 上海外高桥造船有限公司 | Installation method for seawater riser assembly stage of FPSO ship |
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