CN109680668B - Device and method for connecting upper assembly block and lower supporting structure of offshore booster station - Google Patents
Device and method for connecting upper assembly block and lower supporting structure of offshore booster station Download PDFInfo
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- CN109680668B CN109680668B CN201910171939.7A CN201910171939A CN109680668B CN 109680668 B CN109680668 B CN 109680668B CN 201910171939 A CN201910171939 A CN 201910171939A CN 109680668 B CN109680668 B CN 109680668B
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- 238000000034 method Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 230000007704 transition Effects 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a device and a method for connecting an upper assembly block and a lower supporting structure of an offshore booster station, wherein the connecting device is formed by connecting a frustum structure and a transition section structure; the frustum structure comprises a round steel pipe and a frustum cone welded at the lower end of the round steel pipe; the transition section structure comprises an upper pipe section, an inclined pipe section and a guide pipe section which are welded in sequence from top to bottom; the lower end of the inclined pipe section is tightly fixed with the lower supporting steel pile through a butt welding line; the upper pipe section and the upper block support are tightly fixed together through butt welding seams. The construction method of the connecting device comprises the steps of preparing a frustum structure, preparing a transition section structure, completing the connection construction of the upper assembly block and the lower supporting structure of the booster station and the like. The invention has the advantages of small steel consumption, simple structure, low manufacturing cost, short offshore construction period, high safety and the like, and has higher popularization and application and social and economic values.
Description
Technical Field
The present invention relates to a connection device and a connection method, and more particularly, to a connection device and a connection method for an upper block and a lower support structure of an offshore booster station.
Background
With the rapid development of the offshore wind power industry, approval and start projects are more and more, and the offshore wind power in China gradually advances into a new stage of large-scale construction. The offshore wind farm is gradually increased in scale, the offshore distance is also more and more far away, and the offshore booster station is widely applied as a necessary facility for the development of the offshore wind farm.
Offshore booster stations are generally divided into upper blocks and lower support structures, which are offshore wind farm boost, distribution and control centers. Various electrical equipment such as main transformer, high-low voltage power distribution cabinet, GIS, communication relay protection equipment are generally arranged in the upper assembly block, and are used for boosting power generated by all offshore wind turbines through the main transformer after collecting power generation energy, and then sending the power to land through a high-voltage submarine cable. The lower supporting structure is a facility for fixing the upper structure of the whole offshore booster station on the seabed, and is required to bear the action of external forces such as wind, waves, currents and the like besides the total weight of the upper structure.
The stress condition of the lower supporting structure of the offshore booster station is different from that of an offshore wind turbine foundation, the offshore wind turbine foundation mainly bears horizontal force and bending moment, and the lower supporting structure mainly bears huge vertical force, so that the supporting structure needs to reliably transfer the vertical force of the upper structure to a foundation; in addition, because the upper assembly block has large weight, the lower supporting structure also needs to have enough rigidity so as to avoid deformation and overlarge vibration when the offshore booster station operates and avoid damage during earthquake.
The current marine booster station upper portion chunk is connected with lower part bearing structure, adopts generally to set up the bracket structure in upper portion chunk post bottom, sets up lower part seal structure at foundation structure's steel pile end, prevents that the grout from spilling over. During installation, the lower guide cone column body of the bracket structure is inserted into the cavity at the top of the steel pile, then the bracket ring plate is welded with the steel pile, and finally grouting operation is performed in the cavity formed by the steel pile and the bracket structure.
However, the above technical solution still has the following drawbacks:
1) The structure is complex, the stiffening rib plates, the conical plates, the annular plates, the reinforcing plate sealing plates, the round tubes and other parts are more, the grouting pipelines are also required to be pre-installed, the manufacturing and the processing are difficult, the welding work is more, and the steel consumption is larger;
2) The construction and installation process is complex, grouting operation is needed to be carried out on each joint, and the offshore construction period is long;
3) The upper block column lower guide cone has a larger gap with the steel pile, is difficult to realize centering installation, has larger eccentricity generally, and has unfavorable structural strength.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a device and a method for connecting an upper block and a lower support structure of an offshore booster station.
In order to solve the technical problems, the invention adopts the following technical scheme: the connection device of the upper assembly block and the lower supporting structure of the offshore booster station is formed by connecting a frustum structure and a transition section structure; the frustum structure comprises a round steel pipe and a frustum cone welded at the lower end of the round steel pipe; the round steel pipe is welded with the inner wall of the upper block strut; the cone frustum is a semicircle cone with the radius decreasing from top to bottom in sequence and is used for guiding when the cone frustum structure is connected with the transition section structure;
the transition section structure comprises an upper pipe section, an inclined pipe section and a guide pipe section; the inclined pipe section is welded at the lower end of the upper pipe section, and the inclined pipe section and the lower supporting steel pile have the same inclination and pipe diameter specification; the lower end of the inclined pipe section is tightly fixed with the lower supporting steel pile through a butt welding line;
the outer diameter of the guide pipe section is smaller than the inner diameter of the inclined pipe section, and the upper end of the guide pipe section is inserted into the inclined pipe section and welded with the inner wall of the inclined pipe section; the lower end of the guide pipe section is provided with an inclined cutting surface for guiding when the transition section structure is inserted into the lower supporting steel pile;
the pipe diameter specification of the upper pipe section is the same as that of the upper block strut, and the upper pipe section and the upper block strut are tightly fixed together through butt welding seams.
The inclination angle of the cutting surface at the lower end of the guide pipe section is 45 degrees.
The outer diameter of the guide pipe section is 6-8 mm smaller than the inner diameter of the inclined pipe section.
The construction method of the connection device of the upper assembly block and the lower supporting structure of the offshore booster station comprises the following specific processes:
a. welding and fixing the conical frustum at the lower end of the round steel pipe to finish the preparation of the conical frustum structure;
b. the upper pipe section, the inclined pipe section and the guide pipe section are welded together in sequence from top to bottom to finish the preparation of the transition section structure;
c. after the lower support structure is installed on the sea, positioning a guide pipe section in the transition section structure into the lower support steel pile; tightly fixing the inclined pipe section and the lower supporting steel pile together by adopting butt welding seams;
d. after the upper assembly is integrally installed, the upper assembly is lifted, a round steel pipe in the frustum structure is positioned in an upper assembly support column, and the round steel pipe is welded with the inner wall of the upper assembly support column;
e. the cone frustum in the cone frustum structure slowly enters the upper pipe section, and the butt welding seam is adopted to tightly fix the upper pipe section and the upper block support column together, so that the connection construction of the upper block and the lower support structure of the booster station is completed.
The invention has the advantages of small steel consumption, simple structure, low manufacturing cost, short offshore construction period, high safety and the like, and has higher popularization and application and social and economic values.
Drawings
Fig. 1 is a diagram showing an application example of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is a schematic view of a frustum structure.
Fig. 4 is a schematic view of a transition section structure.
Fig. 5 is a schematic view of the construction process of the present invention.
In the figure: 1. an upper block; 2. a connecting device; 3. a lower support structure; 4. an upper block strut; 5. a frustum structure; 6. a transition section structure; 7. a lower supporting steel pile; 8. round steel pipes; 9. conical frustum; 10. an upper pipe section; 11. an inclined pipe section; 12. and guiding the pipe section.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
1-2, a connecting device of an upper block and a lower supporting structure of an offshore booster station is formed by connecting a frustum structure 5 and a transition section structure 6; as shown in fig. 3, the frustum structure 5 comprises a round steel pipe 8 and a frustum cone 9 welded to the lower end of the round steel pipe; the round steel pipe 8 is welded with the inner wall of the upper block strut 4; the conical frustum 9 is a semicircle cone with the radius decreasing from top to bottom in sequence and is used for guiding when the conical frustum structure 5 is connected with the transition section structure 6;
as shown in fig. 4, the transition section structure 6 comprises an upper pipe section 10, an inclined pipe section 11 and a guide pipe section 12; the inclined pipe section 11 is welded at the lower end of the upper pipe section 10, and the inclined pipe section 11 and the lower supporting steel pile 7 have the same inclination and pipe diameter specification; the lower end of the inclined pipe section 11 is tightly fixed with the lower supporting steel pile 7 through butt welding seams;
the upper block support column 4 and the lower support steel pile 7 are structures inherent in the upper block and the lower support structure, respectively, and each have a cavity therein.
The outer diameter of the guide pipe section 12 is smaller than the inner diameter of the inclined pipe section 11, and the upper end of the guide pipe section 12 is inserted into the inclined pipe section 11 and welded with the inner wall of the inclined pipe section 11; the lower end of the guide pipe section 12 is provided with an inclined cutting surface for guiding when the transition section structure 6 is inserted into the lower supporting steel pile 7;
the pipe diameter specification of the upper pipe section 10 is the same as that of the upper block strut 4, and the upper pipe section and the upper block strut are tightly fixed together through butt welding seams.
The inclination angle of the cutting face at the lower end of the guide tube section 12 is 45 °.
The outer diameter of the guide tube section 12 is 6-8 mm smaller than the inner diameter of the inclined tube section 11.
The construction method of the connection device of the upper assembly block and the lower supporting structure of the offshore booster station comprises the following specific processes:
a. the conical frustum 9 is welded and fixed at the lower end of the round steel pipe 8, so that the preparation of the conical frustum structure 5 is completed;
b. the upper pipe section 10, the inclined pipe section 11 and the guide pipe section 12 are welded together from top to bottom in sequence to finish the preparation of the transition section structure 6;
c. after the lower support structure is installed on the sea, positioning the guide pipe section 12 in the transition section structure 6 into the lower support steel pile 7; tightly fixing the inclined pipe section 11 and the lower supporting steel pile 7 together by adopting butt welding seams;
d. after the upper block is integrally installed, the upper block is lifted, the round steel pipe 8 in the frustum structure 5 is positioned in the upper block support 4, and the round steel pipe 8 is welded with the inner wall of the upper block support 4;
e. the conical frustum 9 in the conical frustum structure 5 slowly enters the upper pipe section 10, the upper pipe section 10 and the upper block support 4 are tightly fixed together by adopting butt welding seams, and the connection construction of the upper block and the lower support structure of the booster station is completed.
Compared with the prior art, the invention has the following advantages:
(1) The structure is simple, and the steel consumption can be reduced by more than 30%;
(2) The construction process is simple, the installation is quick, grouting operation is not needed, the operation cost is reduced, the construction period is greatly shortened, the requirement on weather window period is reduced, and the engineering progress can be effectively promoted;
(3) The construction precision is high, the alignment eccentricity of the upper structure and the lower structure is small, the maximum eccentricity value can be reduced by more than 30 times, and the safety of the whole structure is improved.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be limited to the following claims.
Claims (10)
1. The utility model provides a marine booster station upper portion chunk and lower part bearing structure's connecting device which characterized in that: the connecting device is formed by connecting a frustum structure (5) and a transition section structure (6); the frustum structure (5) comprises a round steel pipe (8) and a frustum cone (9) welded at the lower end of the round steel pipe; the round steel pipe (8) is welded with the inner wall of the upper block strut (4); the conical frustum (9) is a semicircle cone with the radius decreasing from top to bottom in sequence and is used for guiding when the conical frustum structure (5) is connected with the transition section structure (6);
the transition section structure (6) comprises an upper pipe section (10), an inclined pipe section (11) and a guide pipe section (12); the inclined pipe section (11) is welded at the lower end of the upper pipe section (10), and the inclined pipe section (11) and the lower supporting steel pile (7) have the same inclination and pipe diameter specification; the lower end of the inclined pipe section (11) is tightly fixed with the lower supporting steel pile (7) through butt welding seams;
the outer diameter of the guide pipe section (12) is smaller than the inner diameter of the inclined pipe section (11), and the upper end of the guide pipe section (12) is inserted into the inclined pipe section (11) and welded with the inner wall of the inclined pipe section (11); the lower end of the guide pipe section (12) is provided with an inclined cutting surface which is used for guiding when the transition section structure (6) is inserted into the lower supporting steel pile (7);
the pipe diameter specification of the upper pipe section (10) is the same as that of the upper block support column (4), and the upper pipe section and the upper block support column are tightly fixed together through butt welding seams;
the construction method of the connecting device comprises the following steps:
a. welding and fixing the conical frustum (9) at the lower end of the round steel pipe (8) to finish the preparation of the conical frustum structure (5);
b. welding the upper pipe section (10), the inclined pipe section (11) and the guide pipe section (12) into a transition section structure (6);
c. after the lower supporting structure is installed on the sea, positioning a guide pipe section (12) in the transition section structure (6) into the lower supporting steel pile (7); tightly fixing the inclined pipe section (11) and the lower supporting steel pile (7) together;
d. after the whole installation of the upper assembly, the upper assembly is lifted, a round steel pipe (8) in the frustum structure (5) is positioned in the upper assembly support (4), and the round steel pipe (8) is welded with the inner wall of the upper assembly support (4);
e. the conical frustum (9) in the conical frustum structure (5) slowly enters the upper pipe section (10), the upper pipe section (10) and the upper block support (4) are tightly fixed together, and the connection construction of the upper block and the lower support structure of the booster station is completed.
2. The connection device of an offshore booster station upper block and a lower support structure of claim 1, wherein: the inclination angle of the cutting surface at the lower end of the guide pipe section (12) is 45 degrees.
3. The connection device of an offshore booster station upper block and a lower support structure of claim 2, wherein: the outer diameter of the guide pipe section (12) is 6-8 mm smaller than the inner diameter of the inclined pipe section (11).
4. The connection device of an offshore booster station upper block and a lower support structure of claim 1, wherein: the upper block strut (4) is a structure inherent in the upper block.
5. The connection device of an upper block of an offshore booster station with a lower support structure according to claim 4, the upper block strut (4) having a cavity inside.
6. The connection device of an offshore booster station upper block and a lower support structure according to claim 5, said lower support steel piles (7) being structures inherent in the lower support structure.
7. The connection device of an offshore booster station upper block and a lower support structure according to claim 6, said lower support steel pile (7) having a cavity inside.
8. The connection device of an offshore booster station upper block and a lower support structure of claim 1, wherein: and (3) sequentially welding the upper pipe section (10), the inclined pipe section (11) and the guide pipe section (12) from top to bottom to finish the preparation of the transition section structure (6).
9. The connection of an offshore booster station upper block to a lower support structure of claim 8, wherein: the inclined pipe section (11) and the lower supporting steel pile (7) are tightly fixed together by adopting a butt welding line mode.
10. The connection of an offshore booster station upper block to a lower support structure of claim 9, wherein: the upper pipe section (10) and the upper block support (4) are tightly fixed together by adopting butt welding seams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171939.7A CN109680668B (en) | 2019-03-07 | 2019-03-07 | Device and method for connecting upper assembly block and lower supporting structure of offshore booster station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171939.7A CN109680668B (en) | 2019-03-07 | 2019-03-07 | Device and method for connecting upper assembly block and lower supporting structure of offshore booster station |
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| Publication Number | Publication Date |
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| CN109680668A CN109680668A (en) | 2019-04-26 |
| CN109680668B true CN109680668B (en) | 2023-12-08 |
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| CN201910171939.7A Active CN109680668B (en) | 2019-03-07 | 2019-03-07 | Device and method for connecting upper assembly block and lower supporting structure of offshore booster station |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111046481B (en) * | 2019-12-27 | 2024-01-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Design method for connection between marine engineering module and pile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202492833U (en) * | 2012-03-30 | 2012-10-17 | 广东省电力设计研究院 | Double-platform offshore booster station |
| CN104594317A (en) * | 2015-01-13 | 2015-05-06 | 江苏金风科技有限公司 | Working platform, single pile foundation, offshore working platform and installing method of offshore working platform |
| CN207608917U (en) * | 2017-12-08 | 2018-07-13 | 福建省水利水电勘测设计研究院 | A kind of Prefabricated integral grouped piles cap basis by connection of being in the milk |
| CN208395852U (en) * | 2018-05-29 | 2019-01-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of pillar and pile connecting structure suitable for taper pile |
| JP2019027037A (en) * | 2017-07-26 | 2019-02-21 | 新日鐵住金株式会社 | Foundation structure, pile head structure of steel pipe pile, and construction method of foundation structure |
| CN209722921U (en) * | 2019-03-07 | 2019-12-03 | 龙源（北京）风电工程设计咨询有限公司 | The attachment device of offshore boosting station upper chunk and bottom bracing structure |
-
2019
- 2019-03-07 CN CN201910171939.7A patent/CN109680668B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202492833U (en) * | 2012-03-30 | 2012-10-17 | 广东省电力设计研究院 | Double-platform offshore booster station |
| CN104594317A (en) * | 2015-01-13 | 2015-05-06 | 江苏金风科技有限公司 | Working platform, single pile foundation, offshore working platform and installing method of offshore working platform |
| JP2019027037A (en) * | 2017-07-26 | 2019-02-21 | 新日鐵住金株式会社 | Foundation structure, pile head structure of steel pipe pile, and construction method of foundation structure |
| CN207608917U (en) * | 2017-12-08 | 2018-07-13 | 福建省水利水电勘测设计研究院 | A kind of Prefabricated integral grouped piles cap basis by connection of being in the milk |
| CN208395852U (en) * | 2018-05-29 | 2019-01-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of pillar and pile connecting structure suitable for taper pile |
| CN209722921U (en) * | 2019-03-07 | 2019-12-03 | 龙源（北京）风电工程设计咨询有限公司 | The attachment device of offshore boosting station upper chunk and bottom bracing structure |
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| CN109680668A (en) | 2019-04-26 |
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