CN212243724U - Floating-supporting type mounting structure of offshore converter station - Google Patents
Floating-supporting type mounting structure of offshore converter station Download PDFInfo
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- CN212243724U CN212243724U CN202020253851.8U CN202020253851U CN212243724U CN 212243724 U CN212243724 U CN 212243724U CN 202020253851 U CN202020253851 U CN 202020253851U CN 212243724 U CN212243724 U CN 212243724U
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Abstract
The utility model provides a floating support type mounting structure of an offshore converter station, which comprises a floating support ship, wherein anti-shaking floating bodies are arranged on two sides of the floating support ship and consist of a floating box and a fixed frame, a drainage and water injection system is arranged in the floating box to inject water into a lower layer when an upper chunk is loaded, and drainage is performed during transportation to provide enough anti-shaking moment; one side, close to the ship, of the floating box is connected with a ship board of the floating ship, a fixed frame is arranged at the upper part of the floating box, and the upper end of the fixed frame is connected with a deck of the floating ship; the floating support ship is provided with a track, and the track is arranged along the directions of a bow and a stern of the floating support ship. The utility model provides a marine converter station's floating support formula mounting structure anti-shake body during the transportation can provide certain anti-shake moment, makes the lateral stability ability who floats support boats and ships improve by a wide margin, and the roll range reduces by a wide margin, has guaranteed superstructure and electrical equipment's safety during the transportation.
Description
Technical Field
The utility model relates to a marine converter station's floating support formula mounting structure is applicable to marine wind power generation technical field.
Background
Wind power generation is a novel clean energy, and the development trend of wind power is to utilize ocean wind energy and develop offshore wind power generation. In recent years, offshore wind power in China is rapidly developed, and by the end of 2018, offshore wind power total installed machines in China have reached 360 thousands of kilowatts, and offshore wind power projects with millions of kilowatts are under construction.
With the large-scale development of offshore wind power in China, the output of the offshore wind power is more and more important, and the investment proportion is larger and larger. The offshore wind power output generally comprises output of an alternating current scheme and an alternating current scheme, wherein an offshore booster station needs to be built when alternating current needs to be output, and an offshore converter station needs to be built when direct current is output. The plane size of the offshore converter station generally exceeds 60 m, the weight of the offshore converter station exceeds 1 ten thousand tons, the hoisting capacity of most of the crane ships in the world at present is exceeded, and the traditional hoisting mode installation cannot be realized. According to the experience of the offshore oil and gas industry, a floating installation method can be generally adopted for a large offshore platform.
The traditional floating type installation method of the offshore platform comprises the following installation processes: the construction of the whole upper block is completed on land; the upper block slides on the track, and the whole upper block slides to a special floating-support mounting ship; transporting the upper module to the site by the floating-support installation ship; the floating-supported ship carries the upper module block to enter the center of the installed jacket; the upper and lower connecting portions are aligned; the floating pontoon is ballasted and sunk, and the upper module is placed on the jacket; the floating pontoon continues to sink and is separated from the upper module; the floating-pontoon sails out; and the upper module is connected with the jacket to complete installation.
The traditional floating type installation method of the offshore platform is generally used for oil and gas platforms. However, for the offshore converter station, due to the characteristics of large span, small structural rigidity, sensitive equipment vibration and the like of the offshore converter station, the conventional floating installation method of the offshore platform may have risks of overlarge structural deformation, damage of equipment due to vibration and the like of the offshore converter station.
Therefore, in order to ensure the smooth installation of the large-scale offshore converter station, some extra measures are needed to realize stable and reliable offshore installation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a marine converter station's formula mounting structure that floats to the not enough of existence among the prior art.
To this end, the above object of the present invention is achieved by the following technical solutions:
the utility model provides a marine converter station's float-over installation structure which characterized in that: the floating-support type mounting structure of the offshore converter station comprises a floating-support ship, anti-rolling floats are arranged on two sides of the floating-support ship and consist of a floating box and a fixed frame, a drainage and water injection system is arranged in the floating box to inject water into a lower layer when an upper chunk is loaded, and drainage is carried out during transportation to provide sufficient anti-rolling moment; one side, close to the ship, of the floating box is connected with a ship board of the floating ship, a fixed frame is arranged at the upper part of the floating box, and the upper end of the fixed frame is connected with a deck of the floating ship; the floating support ship is provided with a track, the track is arranged along the bow and stern directions of the floating support ship, and the track is matched with sliding shoes arranged below the upper block so that the upper block can slide to the floating support ship from the land.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as the utility model discloses a preferred technical scheme: and a supporting frame is arranged between the upper module block and the sliding shoe.
As the utility model discloses a preferred technical scheme: the high-order braced frame is set up along the vertical of floating support boats and ships in upper portion chunk both sides, high-order braced frame includes bracing and horizontal brace, and two high-order braced frame symmetries set up in bow and stern position, the middle part at the upper portion chunk is fixed to the upper end of bracing, the lower extreme of bracing is fixed on the deck of ship, the one end of horizontal brace is fixed on upper portion chunk bottom deck, and the other end is fixed on the bracing.
As the utility model discloses a preferred technical scheme: the double-row LMUs are arranged between the upper module and the foundation jacket, the double-row LMUs are arranged below the double-row support columns, and the foundation jacket is arranged in a double-row pile mode to correspond to the double-row LMUs on the lower portion of the upper module one to one.
As the utility model discloses a preferred technical scheme: the double-row LMUs include LMUs with adjustable planar position, LMUs with adjustable planar position include ordinary LMU and toper linkage segment, the upper end of toper linkage segment is connected with double-row support column, the upper end diameter of toper linkage segment is the same with the diameter of double-row support column, the lower extreme of toper linkage segment is connected with ordinary LMU, the lower extreme diameter of toper linkage segment is the same with ordinary LMU's upper end diameter, the upper end diameter of toper linkage segment is less than its lower extreme diameter and is used for forming the middle part of toper linkage segment and be the structure of conic section.
The utility model provides a marine converter station's floating support formula mounting structure has following beneficial effect:
(1) when the floating-supported ship is transported, anti-shaking floating bodies are arranged on two sides. The anti-shake body can provide certain anti-shake moment during transportation, makes the lateral stability ability of floating-supported boats and ships improve by a wide margin, and the roll amplitude reduces by a wide margin, has guaranteed superstructure and electrical equipment's safety during transportation.
(2) When the upper module is transported, the high-position supporting frame is arranged along the longitudinal direction of the ship. The high-position supporting frame strengthens the lateral force resisting rigidity of the upper structure, improves the lateral force resisting level of the upper structure, reduces the deformation of the upper structure during transportation and ensures the structural safety.
(3) Double rows of LMU connection are arranged between the upper module of the offshore converter station and the basic jacket (the double rows of support columns and the double rows of LMUs form the double rows of LMU connection). The lateral rigidity of the single-row LMU is very small, the weight of the upper block of the offshore converter station is very large, the horizontal rigidity is insufficient, the structural deformation is large, and the vibration is obvious. The rigidity of the double-row LMU connection is greatly improved compared with that of the single-row LMU, the integral stability of the structure is also greatly improved, the deformation and vibration of the integral structure of the offshore converter station during operation are reduced, and the safety of the structure and electrical equipment is guaranteed.
(4) A planar position adjustable LMU is provided. The tapered section is adjustable to the actual position of the foundation jacket pile while ensuring that the upper portion is properly aligned with the column and the lower end of the tapered connecting section is properly aligned with the foundation jacket pile. Therefore, the allowable error of the foundation jacket pile is greatly widened, the allowable error of the foundation jacket pile can be widened to 150 mm after the adjustable LMU is arranged according to the 20 mm precision requirement during the alignment of the traditional LMU, and the construction process and the construction difficulty of the foundation jacket pile are greatly simplified.
Drawings
Fig. 1 is a transverse view of a floating installation structure of an offshore converter station according to the present invention;
fig. 2 is a longitudinal view of a floating installation structure of an offshore converter station according to the present invention;
FIG. 3 is a longitudinal view of the shipping stage;
FIG. 4 is a longitudinal view of the entry stage;
FIG. 5 is a transverse view of a docking stage;
FIG. 6 is a transverse view after docking is complete;
FIG. 7 is a diagram of an LMU with adjustable planar position.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(1) As shown in fig. 1 to 3, an upper block 1 of an offshore converter station and a floating vessel 2 form a floating body system. Starting from the construction on land 3, the upper block 1 is seated on the track 4 by means of the support frame 12 and the skid shoes 13 and, after the construction is completed, is slipped from the track 4 onto the floating vessel 2. Anti-rolling floats 21 are provided on both sides of the floating vessel 2 and fixed to both sides of the side by fixing frames 22. The anti-swing floater 21 is of a steel closed box structure, and is internally provided with a reinforcing rib plate and a drainage and water injection system. The side of the anti-rolling floating body 21 close to the ship is connected with the ship board, and the upper part of the anti-rolling floating body is provided with a fixed frame 22 connected with the ship deck. Before loading, the anti-rolling floating body 21 and the fixed frame 22 are installed on the floating-supported ship 2, and water is injected into the anti-rolling floating body 21 to enable the floating-supported ship 2 to sink; then the upper module 1, the supporting frame 12 and the sliding shoes 13 are integrally translated to the floating ship 2 from the land 3 by traction sliding or a flat trolley; during the transportation after offshore, the anti-rolling buoy 21 is drained so as to provide enough anti-rolling moment for the floating-supported ship 2; after reaching the installation site, the connection part between the floating vessel 2 and the fixed frame 22 is cut, and the anti-rolling float 21 is separated from the fixed frame 22 and the floating vessel 2.
(2) As shown in fig. 4, high support frames 14 are provided at both sides of the upper block 1 in the longitudinal direction of the ship, and the high support frames 14 are composed of inclined struts 141 and horizontal struts 142 and symmetrically provided at the positions of the bow and the stern. The upper end of the diagonal brace 141 is fixed to the middle of the upper block 1, and the lower end is fixed to the deck of the floating vessel 2. One end of the horizontal brace 142 is fixed to the lower deck of the upper block 1, and the other end is fixed to the diagonal brace 141. The elevated support frame 14 is built together with the upper module 1 on land and shipped, cut and removed prior to butt-jointing.
(3) As shown in fig. 5 to 6, in the float mounting process: the floating ship 2 is ballasted and sunk, so that the upper module 1 is placed on the foundation jacket pile 5; the floating vessel 2 continues to sink so that the support frame 12, skid shoes 13 are separated from the upper block 1; the floating vessel 2 is then driven out of the slot of the foundation jacket pile 5 and the upper block 1 is welded offshore to the foundation jacket pile 5. Double rows of support columns 15 are arranged between the upper module 1 and the basic jacket pile 5, double rows of LMUs 51 are arranged below the double rows of support columns 15, the double rows of LMUs 51 are correspondingly welded to the top ends of the symmetrical split jacket structures (basic jacket piles) 5, and the basic jacket pile 5 is also arranged in a double row of piles and corresponds to the positions of the double rows of LMUs 51 one by one. The top of basic jacket pile 5 can further set up buffering sandbox, simultaneously before upper portion chunk 1, the separation of floating and supporting boats and ships 2, set up between the ship board both sides of floating and supporting boats and ships 2 and basic jacket pile 5 and sway fender or stop device in order to improve the butt joint installation accuracy, reduce the installation degree of difficulty.
(4) As shown in fig. 7, the adjustable LMU6 is comprised of a conventional LMU51 and a tapered connecting section 152. The upper end of the conical connecting section 152 is connected with the double rows of supporting columns 15, and the diameters are kept consistent; the tapered connecting section 152 is connected at its lower end to a conventional LMU51 and is of uniform diameter. During manufacturing, the upper end position of the conical connecting section 152 is aligned with the positions of the double rows of supporting columns 15, the lower end position of the conical connecting section is aligned with the pile top position of the foundation jacket pile 5, and the error between the columns and the pile can be adjusted through the self size of the conical connecting section 152. Before the upper module 1 is delivered, the installed foundation jacket pile 5 is measured on site, then the size of the conical connecting section 152 is adjusted according to the size measured on site, and then the common LMU51 is welded at the lower end of the conical connecting section, so that the corresponding precision of the position of the common LMU51 and the pile top position of the foundation jacket pile 5 on site can meet the requirement.
The above-mentioned embodiments are only for explaining the preferred embodiments of the present invention, and not for limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made by the present invention fall within the protection scope of the present invention within the spirit and the protection scope of the claims.
Claims (5)
1. The utility model provides a marine converter station's float-over installation structure which characterized in that: the floating-support type mounting structure of the offshore converter station comprises a floating-support ship, anti-rolling floats are arranged on two sides of the floating-support ship and consist of a floating box and a fixed frame, a drainage and water injection system is arranged in the floating box to inject water into a lower layer when an upper chunk is loaded, and drainage is carried out during transportation to provide sufficient anti-rolling moment; one side, close to the ship, of the floating box is connected with a ship board of the floating ship, a fixed frame is arranged at the upper part of the floating box, and the upper end of the fixed frame is connected with a deck of the floating ship; the floating support ship is provided with a track, the track is arranged along the bow and stern directions of the floating support ship, and the track is matched with sliding shoes arranged below the upper block so that the upper block can slide to the floating support ship from the land.
2. The floating installation structure of an offshore converter station according to claim 1, characterized in that: and a supporting frame is arranged between the upper module block and the sliding shoe.
3. The floating installation structure of an offshore converter station according to claim 1, characterized in that: the high-order braced frame is set up along the vertical of floating support boats and ships in upper portion chunk both sides, high-order braced frame includes bracing and horizontal brace, and two high-order braced frame symmetries set up in bow and stern position, the middle part at the upper portion chunk is fixed to the upper end of bracing, the lower extreme of bracing is fixed on the deck of ship, the one end of horizontal brace is fixed on upper portion chunk bottom deck, and the other end is fixed on the bracing.
4. The floating installation structure of an offshore converter station according to claim 1, characterized in that: the double-row LMUs are arranged between the upper module and the foundation jacket, the double-row LMUs are arranged below the double-row support columns, and the foundation jacket is arranged in a double-row pile mode to correspond to the double-row LMUs on the lower portion of the upper module one to one.
5. The floating installation structure of an offshore converter station according to claim 4, characterized in that: the double-row LMUs include LMUs with adjustable planar position, LMUs with adjustable planar position include ordinary LMU and toper linkage segment, the upper end of toper linkage segment is connected with double-row support column, the upper end diameter of toper linkage segment is the same with the diameter of double-row support column, the lower extreme of toper linkage segment is connected with ordinary LMU, the lower extreme diameter of toper linkage segment is the same with ordinary LMU's upper end diameter, the upper end diameter of toper linkage segment is less than its lower extreme diameter and is used for forming the middle part of toper linkage segment and be the structure of conic section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020253851.8U CN212243724U (en) | 2020-03-04 | 2020-03-04 | Floating-supporting type mounting structure of offshore converter station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020253851.8U CN212243724U (en) | 2020-03-04 | 2020-03-04 | Floating-supporting type mounting structure of offshore converter station |
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| CN212243724U true CN212243724U (en) | 2020-12-29 |
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| CN202020253851.8U Active CN212243724U (en) | 2020-03-04 | 2020-03-04 | Floating-supporting type mounting structure of offshore converter station |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726548A (en) * | 2021-02-04 | 2021-04-30 | 中交第三航务工程局有限公司 | Construction method for split jacket foundation of deep-open sea converter station |
| CN113202076A (en) * | 2021-05-10 | 2021-08-03 | 中国建筑第六工程局有限公司 | Large-scale overwater construction platform structure and erection method thereof |
| CN113353202A (en) * | 2020-03-04 | 2021-09-07 | 中国电建集团华东勘测设计研究院有限公司 | Floating-supporting type installation structure and method for offshore converter station |
| CN114837478A (en) * | 2021-02-02 | 2022-08-02 | 中国电建集团华东勘测设计研究院有限公司 | Novel wet-towed self-installation type offshore transformer substation and seabed big data center integral structure and installation and maintenance method |
-
2020
- 2020-03-04 CN CN202020253851.8U patent/CN212243724U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353202A (en) * | 2020-03-04 | 2021-09-07 | 中国电建集团华东勘测设计研究院有限公司 | Floating-supporting type installation structure and method for offshore converter station |
| CN114837478A (en) * | 2021-02-02 | 2022-08-02 | 中国电建集团华东勘测设计研究院有限公司 | Novel wet-towed self-installation type offshore transformer substation and seabed big data center integral structure and installation and maintenance method |
| CN114837478B (en) * | 2021-02-02 | 2023-07-07 | 中国电建集团华东勘测设计研究院有限公司 | Wet-towed self-installation type offshore substation and seabed big data center integral structure and installation method |
| CN112726548A (en) * | 2021-02-04 | 2021-04-30 | 中交第三航务工程局有限公司 | Construction method for split jacket foundation of deep-open sea converter station |
| CN113202076A (en) * | 2021-05-10 | 2021-08-03 | 中国建筑第六工程局有限公司 | Large-scale overwater construction platform structure and erection method thereof |
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