CN217500151U - Board-free tray type offshore substation upper module - Google Patents
Board-free tray type offshore substation upper module Download PDFInfo
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- CN217500151U CN217500151U CN202220414095.1U CN202220414095U CN217500151U CN 217500151 U CN217500151 U CN 217500151U CN 202220414095 U CN202220414095 U CN 202220414095U CN 217500151 U CN217500151 U CN 217500151U
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Abstract
The utility model provides a plateless tray type offshore substation upper module, which comprises a two-layer frame type steel structure, wherein the frame type steel structure is formed by beams, columns and inclined struts, and a main column, a structural column and an inclined strut are arranged between the upper layer beam and the lower layer beam; the beam or column of the frame-type steel structure is connected with a prefabricated cabin or outdoor equipment to form an integral upper block of the offshore substation; the frame type steel structure takes a beam system as a framework of a structure type of the plateless tray, the upper module of the plateless tray structure type offshore substation is only provided with a grid channel area in a channel area, an equipment overhaul area and a boarding aggregation area on two layers of trays, and all areas are not provided with ribs and steel planking. The utility model discloses a pattern is arranged to two layers of steel construction, has cancelled original three-layer and four layers roof beam, post, rib, board etc. has cancelled rib, steel bed board etc. on one deck and two layers simultaneously, and the quantity of reducible steel is about 50% ~60%, alleviates upper portion chunk weight, and then makes the choice of construction ship machine equipment increase.
Description
Technical Field
The utility model belongs to the technical field of offshore wind power generation, especially, relate to a no board tray formula offshore substation upper portion chunk.
Background
Offshore wind power is an important new power of renewable energy, and is an important realization way for adjusting energy structures, creating low-carbon production modes and promoting sustainable development. The offshore substation serves as an offshore wind farm electric energy collection, boosting, power distribution and control center, becomes an important supporting facility for an offshore wind farm, and is a factor which is mainly considered in optimization design.
Like a conventional offshore platform, an offshore substation consists of an upper block and a lower foundation. The traditional upper module is usually a steel structure platform with four decks, main electrical equipment comprises a main transformer, a GIS, a switch cabinet, a power distribution device, a communication relay protector, a diesel generator, a storage battery and the like, main heating and ventilation equipment comprises a dehumidifier, an air conditioner, a fan and the like, main water supply and drainage equipment comprises a fire pump and the like, all professional main equipment is arranged indoors, and a closed space is surrounded by steel surrounding walls.
The general development of the domestic offshore transformer substation is integrated, and the main arrangement forms include an integral type and a modular type. According to the needs of equipment, the integral offshore transformer substation is generally in a four-layer steel structure frame type structure, a beam, a column and a strut are used as supports, a steel deck plate and a bulkhead are used as structural separation, outfitting materials are used for fire prevention, insulation and decoration, an integral block with a plurality of rooms is formed, manufacturing, installation and debugging of the whole upper block are completed on land, and then the upper block is integrally transported to the site and integrally hoisted. However, the integral offshore transformer substation has the defects that the integral weight of the upper block is heavy, engineering materials are more, large-scale transportation and installation ships are needed, and the requirement on the water depth of a site is high.
At present, the domestic modular offshore transformer substation mainly divides the upper module of a booster station into a plurality of modules, and can be divided into two types according to the arrangement type:
1) and the first one: the equipment is still arranged indoors and is divided into a main transformer module, a medium-voltage module, a high-voltage module, a control module, an auxiliary module and the like according to functions, the manufacture, installation and debugging in the modules are finished on the land, and then all the modules are transported to the field and hoisted one by one;
2) and the second is as follows: the scheme that part of equipment adopts outdoor arrangement and the rest equipment adopts independent modules (refer to a lightweight module integrated offshore booster station in patent CN 113250167A) adopts a two-layer traditional deck structure, namely, a deck is composed of ribs and steel planks.
However, both of the above two modular offshore substations have limitations, the amount of steel used for the structure such as the bulkhead of the first scheme is doubled, the connection and the integral debugging between the modules need to be completed on the sea, the offshore operation time is long, and the construction cost is high; the second scheme does not specifically design the prefabricated cabin structure of the module, the steel amount of the two-layer traditional deck structure is large, and the structures such as a firewall between outdoor equipment and the like are not considered.
In conclusion, the upper module of the current offshore transformer substation has the problems of heavy weight, long construction period, few ship hoisting machine choices, high development cost and the like. With the development of the trend of large capacity and deep water of offshore wind power and the requirement of cost reduction in the flat time, the scheme optimization of the upper module of the offshore substation is necessary and critical. The weight of the structure in the upper block of the offshore substation is about 50% -60% of the weight of the whole upper block, and the upper block is optimized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a no board tray formula marine transformer substation upper portion chunk to the not enough of existence among the prior art.
Therefore, the above purpose of the present invention is achieved by the following technical solutions:
the utility model provides a no board tray formula marine transformer substation upper portion chunk which characterized in that: the upper module of the plateless tray type offshore substation comprises two layers of frame type steel structures, each frame type steel structure is formed by a beam, a column and an inclined strut, and a main column, a structural column and an inclined strut are arranged between the upper layer of beam and the lower layer of beam;
the beam or column of the frame-type steel structure is connected with a prefabricated cabin or outdoor equipment to form an integral upper block of the offshore substation;
the frame type steel structure takes a beam system as a framework of a structure type without a plate tray, the upper module of the offshore substation with the structure type without the plate tray is only provided with a grid channel area in a channel area, an equipment maintenance area and a boarding aggregation area on two layers of trays, and all the areas are not provided with ribs and steel planks.
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: the grid passageway district includes steel grating and two side railing, two side railing settings are in the both sides of steel grating, the steel grating is laid on the structure roof beam.
As the utility model discloses an preferred technical scheme: the upper end of the main column is provided with a lifting lug so as to facilitate hoisting.
As the utility model discloses a preferred technical scheme: and fireproof steel plate walls are arranged among the outdoor equipment for separation.
As the utility model discloses an preferred technical scheme: the frame-type steel structure is characterized in that an equipment foundation is embedded in a beam at the bottom of outdoor equipment in a frame-type steel structure, the embedded equipment foundation is used as a supporting structure, and meanwhile, the fireproof separation of an equipment bottom plate is considered.
As the utility model discloses a preferred technical scheme: two symmetrical crawling ladders are arranged between the beam systems of the two-layer frame type steel structure and are used for meeting the requirements of escape and operation and maintenance.
As the utility model discloses a preferred technical scheme: the prefabricated cabin comprises a steel enclosure wall, a structural column, a ring beam, a top plate and a bottom plate;
the structural columns and the ring beams form a frame of the prefabricated cabin, and the steel enclosure walls, the top plate and the bottom plate form a wrapping of the frame of the prefabricated cabin.
As the utility model discloses an preferred technical scheme: the frame-type steel structure is characterized in that plate-type nodes are arranged at beam-column junctions of the frame-type steel structure, the plate-type nodes are arranged on beams, and the plate-type nodes are connected with the structural columns and the inclined struts through welding faces on the plate-type nodes in a welding mode.
The utility model provides a no board tray formula marine transformer substation upper portion chunk has following beneficial effect:
1) the upper portion module of the conventional offshore transformer substation adopts a structural style of a four-layer deck, the utility model discloses an upper portion module of the offshore transformer substation only adopts a two-layer steel structure arrangement style, cancels original three-layer and four-layer beam, column, rib, plate and the like, cancels one-layer and two-layer rib, steel deck and the like simultaneously, can reduce the amount of steel by about 50% -60%, lightens the weight of the upper portion module, and then increases the choice of construction ship engine equipment; similarly, the structural style of the two-layer steel-free floor slab can enable the construction to be faster and more convenient, and greatly saves the land construction time and cost.
2) The method is different from a conventional offshore transformer substation, a conventional steel structure room is omitted, and the original bulkhead, outfitting and roof structure are correspondingly omitted; the indoor equipment adopts a finished product prefabricated cabin type; the exposed devices are divided by steel structure fire walls, so that the fire protection requirement is met, and the arrangement is compact; further reducing the weight of the upper block of the substation. Meanwhile, the finished product prefabricated cabin is provided by equipment manufacturers in a whole set, and the construction speed in the factory can be increased by construction with multiple working surfaces.
3) The prefabricated cabin is different from a conventional offshore transformer substation, the arrangement of the finished prefabricated cabin is hardly influenced by the structural form, the arrangement flexibility is high, the prefabricated cabin is connected with the upper part of the transformer substation through the support, unnecessary structures of a frame can be eliminated, and the steel quantity is further reduced.
4) The utility model discloses marine transformer substation upper portion adopts the space truss structure, sets up the bracing between one deck and the second deck post, increases the bulk stiffness, reduces to warp, satisfies the requirement of operation on the throne and hoist and mount.
5) The transformer substation is characterized in that four through main columns are arranged, the lower portions of the main columns are connected with a lower portion structure of the transformer substation, lifting lugs are arranged on the upper portions of the main columns, and the upper portion module transfers force through the four main columns. Heavier electrical equipment such as a main transformer and the like is arranged between the main column, lighter equipment is arranged on the outer side of the main column, the center of gravity is centered, force is transferred to the main column through a beam, an inclined strut, a column and the like, the stress is clear, the structure is reasonable, the section size of steel can be reduced, and the using amount of the steel can be reduced. Between two layers of trays, plate type nodes are arranged at the intersection of the structural rod systems, and the rod pieces are connected with the nodes in a welding mode.
6) Based on tray formula structural style, main equipment and prefabricated cabin arrange in two layers of structural beam, in fortune maintenance and repair period, can realize dismantling and changing of equipment or finished product prefabricated cabin fast, conveniently. Meanwhile, if needed, the two layers of trays can be disassembled in a welding or cutting mode.
7) And based on the utility model discloses a basic frame and thinking of no board tray formula upper portion chunk pattern can be according to the nimble structure extension that carries on of capacity of wind-powered electricity generation field, and proper increase and decrease roof beam, post, bracing isotructure or adjustment structure span, cross-section can form the marine transformer substation upper portion chunk that is applicable to different capacity scales.
Drawings
Fig. 1 is a diagram of a frame-type steel structure in an upper block of a plateless tray-type offshore substation provided by the present invention.
Fig. 2 is an assembly diagram of the upper module of the plateless tray type offshore substation provided by the present invention.
Fig. 3a is a connection relation diagram of an inner beam, a column and a diagonal brace of a layer of frame type steel structure.
Fig. 3b is a connection relationship diagram of the inner beam, the column and the diagonal brace of the two-layer frame type steel structure.
Fig. 4 is an illustration of a grid channel.
Fig. 5 is a schematic view of the apparatus and prefabricated cabin replacement/removal.
Detailed Description
Be different from ordinary marine transformer substation way, the utility model provides a no board tray formula marine transformer substation upper portion chunk only adopts two-layer steel structural framework can accomplish arranging of whole transformer substation upper portion chunk to realize its function, the utility model provides a structural style easily extends, and is applicable in the upper portion chunk of different capacity. The transformer substation adopting the structure type has lighter weight, faster construction and lower manufacturing cost.
Specifically, the utility model provides a no board tray formula marine transformer substation upper portion chunk, including post, bracing, roof beam, steel grating passageway, prevent hot wall etc. similar direct "no board tray" structural style as the skeleton with the roof beam system.
1) The utility model provides a no board tray formula offshore substation upper portion chunk is two layers and arranges, forms whole frame construction through roof beam, post, bracing, sets up two layers of roof beam structures, sets up post and bracing between the two layers of roof beams; four main columns are arranged, the lower ends of the main columns are connected with a lower part structure, and lifting lugs are arranged at the upper ends of the main columns; on the vertical plane, diagonal braces are arranged between the columns, and on the plane, beams are arranged between the columns or the diagonal braces.
2) The finished prefabricated cabin and the exposed equipment are connected with the structure through a base and the like, and the structure and the related equipment form an integral upper block of the offshore substation. The prefabricated cabin can be arranged into a single layer or double layers according to the setting requirement.
3) And each layer of arrangement is divided into a prefabricated cabin area, an outdoor equipment area and a grid channel area, and the prefabricated cabin area is additionally provided with necessary supporting beams on the frame structure according to the support requirements of the prefabricated cabin or directly utilizes the frame structure beams. The outdoor equipment area pre-embeds the equipment foundation on the structural beam according to the equipment load distribution requirement to serve as a supporting structure, and meanwhile, the fireproof separation of the equipment bottom plate is considered. The grating passage area is provided with steel gratings and bilateral railings only on the structural beam of the passage coverage area according to the planning principle of escape and rescue passages and considering factors such as equipment overhaul areas, boarding areas and the like, and all areas are not provided with ribs and steel planking.
4) And in order to meet the requirement of the fireproof space, the exposed equipment is divided by adopting fireproof steel plate walls.
5) The heavier equipment or prefabricated cabins are arranged between the four main columns, and the lighter equipment or prefabricated cabins are arranged on the outer sides of the four main columns. According to the weight of the equipment, the equipment is symmetrically arranged, the gravity center is controlled to be arranged among the four main columns as far as possible, an integral frame is formed through the inclined struts, and all loads are transmitted to the main columns.
6) Four king-posts upper ends are provided with the lug, the utility model discloses a marine installation is carried out to the mode of upper portion chunk accessible hoist and mount or translation installation.
7) Two basically symmetrical crawling ladders are arranged between the two layers of decks, so that the requirements of escape and operation and maintenance can be met; the ladder stand or the straight ladder can reach the top of the prefabricated cabin, and the requirement of maintenance is met.
To describe the present invention more specifically, the present invention will be further described with reference to the accompanying drawings.
As shown in attached figures 1-4, the integral structure of the upper part module of the plateless tray type offshore transformer substation is of a double-layer framework steel structure type, a plurality of finished product prefabricated cabins and outdoor equipment are placed on two layers of trays according to different functions, steel grids are laid in areas such as a channel area, an equipment overhaul area and a boarding and gathering area on the two layers of trays, all areas are not provided with ribs and steel planks, and a firewall is arranged between the outdoor equipment, so that the upper part module of the plateless tray type offshore transformer substation has the advantages of being light in structure, compact in arrangement, rapid in construction, convenient in operation and maintenance and the like.
As shown in fig. 1, the upper module block of the present embodiment adopts a two-layer steel structure frame type, one layer of "pallet" uses the beam system 1 as a framework, the other layer of "pallet" uses the beam system 2 as a framework, and a main column 3, a structural column 4 and an inclined strut 5 are arranged between the two layers of "pallet" to form an integral frame stress system;
as shown in fig. 2, the upper module of this embodiment is integrally processed in a layered and segmented manner, two layers of steel structures and finished prefabricated cabins are separately processed and assembled from bottom to top, and the assembly sequence includes a layer of steel structure (the layer of frame-type steel structure includes a beam 1, a king post 3, a structural post 4, and a diagonal brace 5), a layer of grid channel 6, a layer of equipment cabin (including a storage battery cabin 11, a heating and ventilation cabin 12, a diesel engine cabin 13, and a diesel tank cabin 14), a layer of steel structure beam 2, a layer of grid channel 7, a layer of outdoor equipment or equipment cabin (including an outdoor main transformer 27, an outdoor resistor cabinet 28, a 220kV GIS cabin 21, an emergency distribution cabin 22, a low-voltage distribution cabin 23, an air bottle cabin 24, a 66kV GIS cabin 25, a secondary equipment cabin 26), a layer of outdoor firewall 29, a ladder stand 15, and a ladder stand 16. As shown in fig. 3a-3b, plate type nodes (101 and 201) are arranged at the intersection of the beams and the columns between the two layers of pallets, the welding surface 102 between the first layer of beam 1 and the structural column 4 and between the second layer of beam 2 and the diagonal support 5 is connected through the welding surface 202.
As shown in fig. 4, the outdoor portion of the upper block of this embodiment is only provided with a grating passage area, steel gratings 32 are arranged in the areas of the passage area, the equipment overhaul area, the boarding and gathering area, and the like on the steel beam system 31, railings 33 are arranged on two sides of the grating passage area, and the rest areas are not provided with ribs and steel deck structures, so that the structural weight and the welding workload are reduced;
as shown in fig. 5, when a problem occurs in the operation and maintenance period and needs to be replaced, the prefabricated cabin (which is composed of a steel enclosure wall 41, a structural column 42, a top ring beam 43 and a top plate 44) and the contained equipment can be hoisted, detached and replaced through a hoisting rope 45 and a hoisting frame 46, which is very convenient.
The above embodiments are merely preferred technical solutions of the present invention, and it should be understood by those skilled in the art that modifications or substitutions of technical solutions or parameters in the embodiments can be made without departing from the principles and essential conditions of the present invention, and all the modifications or substitutions should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a no board tray formula marine transformer substation upper portion chunk which characterized in that: the upper module of the plateless tray type offshore substation comprises two layers of frame type steel structures, each frame type steel structure is formed by a beam, a column and an inclined strut, and a main column, a structural column and an inclined strut are arranged between the upper layer of beam and the lower layer of beam;
the beam or column of the frame-type steel structure is connected with a prefabricated cabin or outdoor equipment to form an integral upper block of the offshore substation;
the frame type steel structure takes a beam system as a framework of a structure type of the plateless tray, the upper module of the plateless tray structure type offshore substation is only provided with a grid channel area in a channel area, an equipment overhaul area and a boarding aggregation area on two layers of trays, and all areas are not provided with ribs and steel planking.
2. The panelboard tray offshore substation topside module according to claim 1, wherein: the grid passageway district includes steel grating and two side railing, two side railing settings are in the both sides of steel grating, the steel grating is laid on the structure roof beam.
3. The panelboard marine substation topside module according to claim 1, wherein: the upper end of the main column is provided with a lifting lug so as to facilitate hoisting.
4. The panelboard marine substation topside module according to claim 1, wherein: and fireproof steel plate walls are arranged among the outdoor equipment for separation.
5. The panelboard marine substation topside module according to claim 1, wherein: two symmetrical crawling ladders are arranged between the beam systems of the two-layer frame type steel structure and are used for meeting the requirements of escape and operation and maintenance.
6. The panelboard marine substation topside module according to claim 1, wherein: the prefabricated cabin comprises a steel enclosure wall, a structural column, an enclosure beam, a top plate and a bottom plate;
the structural columns and the ring beams form a frame of the prefabricated cabin, and the steel enclosure walls, the top plate and the bottom plate form a wrapping of the frame of the prefabricated cabin.
7. The panelboard marine substation topside module according to claim 1, wherein: the frame-type steel structure is characterized in that plate-type nodes are arranged at the beam-column intersection of the frame-type steel structure and are arranged on the beam, and the plate-type nodes are connected with the structural columns and the inclined struts through welding faces on the plate-type nodes in a welding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220414095.1U CN217500151U (en) | 2022-02-28 | 2022-02-28 | Board-free tray type offshore substation upper module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220414095.1U CN217500151U (en) | 2022-02-28 | 2022-02-28 | Board-free tray type offshore substation upper module |
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| CN217500151U true CN217500151U (en) | 2022-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645532A (en) * | 2022-02-28 | 2022-06-21 | 中国电建集团华东勘测设计研究院有限公司 | Board-free tray type offshore substation upper module |
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2022
- 2022-02-28 CN CN202220414095.1U patent/CN217500151U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645532A (en) * | 2022-02-28 | 2022-06-21 | 中国电建集团华东勘测设计研究院有限公司 | Board-free tray type offshore substation upper module |
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