A spliced load transmission frame for onshore debugging of a marine converter station and application thereof

Abstract

The application provides a spliced load transmission frame for land debugging of a marine converter station and an application, the spliced load transmission frame for land debugging of the marine converter station comprises a main support beam, a transverse connecting beam and a transverse support beam; the transverse support beam and the transverse connecting beam jointly form a secondary support beam. The application does not need to perform fire welding on a land debugging site of the marine converter station, avoids damage of fire operation to equipment, and has simple on-site assembly and disassembly processes; meanwhile, the weight of bulk parts is light, and large hoisting equipment does not need to be used for transportation from the land to the upper side of a high platform, so that the overall construction process cost is lower, an efficient and reliable solution is provided for arrangement of temporary equipment during land debugging of the marine converter station; during assembly, the advantage of the load transmission frame is that the number of the transverse connecting beam, the main support beam and the transverse support beam can be adjusted / increased according to an existing platform main and secondary beam structure, special design and processing are not needed, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of offshore wind power, and particularly relates to a spliced load transmission frame for land debugging of an offshore converter station and application. BACKGROUND

[0002] In recent years, the planning of offshore wind farms tends to be large capacity and long distance, and the offshore booster station as the core of the wind farm will be gradually replaced by the offshore converter station. The most obvious difference between the offshore converter station and the offshore booster station is that the offshore converter station is large in size and has many devices, and the weight index of the whole station directly affects the wharf bearing, sliding shipment, transportation and floating installation, and is very sensitive to the overall cost control. When the weight is too large, it will even have a revolutionary impact on each process stage, so that the design of the offshore converter station must be compact and lightweight. In addition to the complexity and high difficulty of the design and construction, the transformer and GIS devices in the offshore converter station have higher pressure level, larger capacity and more quantity, and compared with the offshore booster station, more oil tanks and more devices such as test transformers, control cabinets and reactors are needed during land debugging, so land debugging has become a key path and difficulty in the construction process. Specifically:

[0003] (1) The land construction period of the offshore converter station is tight, and the installation of the device and the construction of each layer of structure are usually cross-performed. For example, the transformer located on the fifth floor (the fifth and sixth floors are high), the installation of the device needs to be completed before the seventh deck is capped. At the same time, due to the large size of the debugging device, if the debugging device is loaded on the roof, it will be difficult for the debugging device to enter the transformer layer, resulting in a height difference between the debugging device and the transformer / GIS device, making it difficult to connect and pipe during testing, and the excessive height difference even affects the test itself.

[0004] (2) The debugging device and the device are only used during land debugging and are not permanent loads. Under the premise of compactness, it is difficult for each room of the offshore converter station to accommodate a large number of heavy debugging devices. If an additional test platform is provided for such devices, the removal operation after debugging needs to be considered, which is high in construction cost and long in construction period; if the nearby device-free room such as the spare parts room is used to arrange the debugging device and the device, the structure beam needs to be strengthened or the beam system needs to be adjusted, which will increase the permanent steel member. In addition, the actual situation is that the selection, scheme and arrangement of the debugging device are later than the design of the structure and even later than the manufacturing on site, which makes it difficult to modify the beam system on site and match the arrangement of the debugging device.

[0005] To solve the above two contradictions, it is urgent to develop a load transfer frame for land debugging of a marine converter station, solve the contradiction between the problem that the beam system cannot be modified and the problem that the equipment arrangement cannot be debugged, and at the same time, optimize the manufacturing process of the load transfer frame as much as possible, reduce the hot work, improve the reusability, speed up the debugging cycle, and provide a solution for the land construction and debugging of the marine converter station. SUMMARY

[0006] The first object of the application is to solve the problems of a large number of temporary equipment / devices, large weight, difficult arrangement, short debugging window and the like during land debugging of a marine converter station, without changing the original platform structure design, a load transfer frame is formed by assembling several types of prefabricated components according to the requirements, which greatly improves the material utilization rate, the site construction efficiency, the simple process flow and the reliable connection between parts.

[0007] To this end, the above object of the application is achieved by the following technical solutions:

[0008] A spliced load transfer frame for land debugging of a marine converter station, comprising a main support beam, a transverse connecting beam and a transverse support beam;

[0009] The main support beam comprises a square steel, an end plate for sealing the two ends of the square steel, and a connecting piece provided on the end plate, the connecting piece being used to connect two adjacent main support beams; the square steel is provided with a plurality of connecting ports on the side, the connecting ports being used to connect the transverse connecting beam and the transverse support beam;

[0010] The transverse support beam and the transverse connecting beam jointly constitute a secondary support beam;

[0011] The transverse support beam comprises a square steel, an end plate for sealing the two ends of the square steel, a latch piece and a connecting piece, the connecting piece being used to connect two adjacent transverse support beams or connect the transverse support beam and the transverse connecting beam;

[0012] The transverse connecting beam comprises a square steel, an end plate for sealing the two ends of the square steel, and at least one self-locking device; the self-locking device is provided on the end plate of the square steel, and the self-locking device on the transverse connecting beam cooperates with the latch piece on the transverse support beam in the connecting port of the main support beam.

[0013] While the above technical solutions are adopted, the following technical solutions can also be adopted or combined:

[0014] As a preferred technical solution of the application, the connecting pieces at the two ends of the main support beam comprise a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece each comprise three connecting plates, the three connecting plates of the first connecting piece of a first main support beam in the adjacent main support beams are staggered with the three connecting plates of the second connecting piece of a second main support beam so that the two are crossed and closed and locked by bolts.

[0015] As a preferred technical scheme of the present application: the outer surface of the connecting plate is sprayed with a graphene coating.

[0016] As a preferred technical scheme of the present application: the bolt is provided with a first opening reinforcement, a second opening reinforcement and a cast steel lock.

[0017] The cast steel lock is arranged on the outer end of the bolt, the first opening reinforcement is arranged close to the sealing plate of the transverse support beam, and the second opening reinforcement is arranged between the cast steel lock and the first opening reinforcement and close to the cast steel lock.

[0018] As a preferred technical scheme of the present application: the top of the cast steel lock has a circular arc surface.

[0019] As a preferred technical scheme of the present application: the width of the second opening reinforcement is greater than that of the first opening reinforcement.

[0020] As a preferred technical scheme of the present application: the self-locking device comprises a bottom plate, a rotating shaft, a lock plate, a lock, a spring and a button block.

[0021] The rotating shaft is arranged above the bottom plate and penetrates the side wall of the transverse connecting beam, the extension direction of the rotating shaft is perpendicular to the insertion direction of the bolt, the lock plate penetrates the rotating shaft, the lock plate is provided with the lock at one end facing the bolt, the lock plate is provided with a plurality of springs at the end away from the bolt, and the two ends of the spring are fixed with the bolt and the bottom plate respectively; the upper surface of the lock plate is provided with a button block, the button block is located at the end of the lock plate provided with the spring, and the transverse connecting beam is provided with a button hole at a position corresponding to the button block.

[0022] As a preferred technical scheme of the present application: the self-locking device is further provided with a limiting plate, the limiting plate is arranged on the bottom plate, and the limiting plate is located between the lock and the spring to space the bolt and the spring.

[0023] As a preferred technical scheme of the present application: the end surface of the lock matched with the bolt is a circular arc surface.

[0024] The application also provides the application of the spliced load transfer frame for land debugging of a marine converter station to a platform of the marine converter station.

[0025] The application provides a spliced load transfer frame for land debugging of a marine converter station and application, specifically

[0026] Beneficial effects:

[0027] 1), the present application provides a spliced load transfer frame, which is assembled and disassembled on site without welding, thereby avoiding damage to equipment caused by welding operation, and the splicing process is simple; meanwhile, the weight of the bulk parts is light, so that the parts can be transported to the upper side of the high platform without using large lifting equipment, the overall construction process cost is lower, and the spliced load transfer frame provides an efficient and reliable solution for the arrangement of temporary equipment during the land debugging of the offshore converter station.

[0028] 2), when splicing, the spliced load transfer frame has the advantage that the number of the transverse connecting beams, the main support beams and the transverse support beams can be adjusted / increased according to the existing platform main beam and secondary beam structure, without special design and processing, and the application range is wide.

[0029] 3), the pin member and the self-locking device in the spliced load transfer frame can effectively ensure the connection reliability of each part, the arc surface of the cast steel lock and the lock catch and the rotating mechanism contact are only pushed and pressed to complete the lock installation, and the on-site operation efficiency is high; meanwhile, the pin member is provided with a connecting port reinforcing piece (i.e., a first opening reinforcing piece and a second opening reinforcing piece), which further guarantees the shear strength of the main support beam.

[0030] 4), the limiting plate is arranged in the self-locking device, which can avoid the misoperation of the construction personnel and avoid the pin member entering the spring group side behind the lock catch plate. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A perspective view of the spliced load transfer frame provided by the present application.

[0032] Figure 2 A perspective view of the main support beam.

[0033] Figure 3a A perspective view of the transverse support beam.

[0034] Figure 3b A perspective view of the pin member on the transverse support beam.

[0035] Figure 4a A perspective view of the transverse connecting beam.

[0036] Figure 4b A perspective view of the self-locking device on the transverse connecting beam.

[0037] Figure 5 An illustration of the splicing process of the connecting member.

[0038] Figure 6 An illustration of the connection process of the pin member and the self-locking device.

[0039] Figure 7 An application illustration of the spliced load transfer frame provided by the present application on the platform.

[0040] In the above figure: 1-main support beam; 11-square steel; 12-sealing plate; 13-connector; 131-bolt hole; 132-graphene coating; 14-connection port; 15-long bolt;

[0041] 2-cross support beam; 21-sealing plate; 22-bolt connector; 220-bolt body; 221-first opening reinforcement; 222-second opening reinforcement; 223-cast steel lock;

[0042] 3-cross connection beam; 31-self-locking device; 311-bottom plate; 312-rotation shaft; 313-locking plate; 314-lock; 315-spring; 316-button block; 317-button hole; 318-limiting plate; 32-free combination end;

[0043] 4-platform structure beam. DETAILED DESCRIPTION

[0044] A splicing load transfer frame for land debugging of a marine converter station mainly consists of three types of prefabricated components, namely main support beams, cross connection beams and cross support beams.

[0045] The main support beam is composed of square steel, sealing plates and connectors. Three connection ports are provided in the middle part of the square steel for the connection of the cross connection beam and the cross support beam. On the one hand, several groups of connections can be provided according to the weight of the debugging equipment to strengthen the strength of the load transfer frame, and on the other hand, the possibility of corresponding adjustment according to the platform structure secondary beam and the equipment foundation is also provided. The two ends of the square steel are closed by sealing plates, and three connectors are welded on the sealing plates. The spacing between the connectors is equivalent to the thickness of the connector. When the main support beam is turned over, the connectors on the two sections of the main support beam can cross into the spacing to form a closed connection section. The connector is a carbon steel casting with three bolt holes reserved in the middle. The outer surface of the connector is sprayed with a graphene coating to reduce the friction between different connectors and increase the wear resistance.

[0046] The cross connection beam and the cross support beam together form a secondary support beam. The cross connection beam is arranged between the two sections of the main support beam, and the cross support beam is arranged outside the two sections of the main support beam and connected through the connection ports of the main support beam.

[0047] The transverse support beam is composed of square steel, sealing plate, bolt and connecting piece, similar to the main support beam, closed at both ends by sealing plate, with bolt at one end for insertion into the connecting port of the main support beam and connected with the transverse connecting beam self-locking device; the other end is connected with the connecting piece consistent with the main support beam for connection with the support beam or other transverse support beam. The bolt is a carbon steel casting, with a rectangular body, a protruding first opening reinforcement near the sealing plate side, and a protruding second opening reinforcement at the end (opposite the opening of the main support beam connecting port) also set inside the position, the second opening reinforcement is wider than the first opening reinforcement, the two are mainly used to strengthen the bending resistance of the main connecting beam connecting port position; a cast steel lock with a circular arc upper part is provided at the end of the bolt.

[0048] The transverse connecting beam is composed of square steel, sealing plate, self-locking device and / or connecting piece, similarly, sealing plates are provided at both ends of the transverse connecting beam, at least one end is provided with a self-locking device, the other end can be provided with a connecting piece or a self-locking device, so that the connecting beams can also be connected; if the self-locking device is provided, a button hole is opened at the top of the square steel for unlocking when disassembling.

[0049] The self-locking device is arranged inside the square steel, and the height of the self-locking device corresponds to the bolt, which is composed of a bottom plate, a rotating shaft, a lock plate, a lock, a spring and a button block; the bottom plate is arranged on the inner wall of the transverse connecting beam, the rotating shaft is arranged on the inner wall above the bottom plate, the lock plate is arranged at the position of the rotating shaft, and the lock plate can rotate around the rotating shaft; the lock of the lock plate is also a semicircular surface, corresponding to the cast steel lock in the bolt, so that the lock can be opened and locked directly without operating the button during assembly; at the same time, the end of the lock plate is provided with a spring member, and when there is no load, the lock plate is parallel to the bottom plate, and the spring is in a natural state; a button is arranged at the rear middle part of the lock plate for unlocking, so that the lock plate rotates to make the cast steel lock in the bolt come out; a limiting plate is arranged between the lock plate and the bottom plate to prevent the bolt from being damaged by misoperation of the self-locking device when there is no main support beam.

[0050] In order to further describe the relationship between each prefabricated part and the operation mechanism of the device, the following will be described from the perspective of assembly:

[0051] The working mechanism of the connecting piece is described by taking the connection of two main support beams as an example: during assembly, the two main support beams are gradually close to each other at the equipment debugging position, the smooth characteristics of the graphene of the connecting piece are used to smoothly make each connecting piece enter the gap of each other, and then the long bolt is screwed from above, thereby completing the connection; during disassembly, only the reverse process is needed.

[0052] The working mechanism of the bolt and the self-locking device is described by taking the connection of a typical main support beam, a transverse support beam and a transverse connecting beam as an example:

[0053] (1) The bolt of the transverse connecting beam exposes the cast steel lock through the connecting port of the main support beam, and the opening reinforcement is respectively arranged at the position of the main connecting beam connecting port to strengthen the local strength;

[0054] (2) As the two sections of the transverse beam are further close, the arc surface of the cast steel lock extrudes the arc surface of the lock catch of the self-locking device, the lock catch plate rotates around the rotating shaft to extrude the spring to form the elastic force, and the button moves synchronously along the track;

[0055] (3) When the two sections of the transverse beam are further pushed, the cast steel lock passes the lock catch, the spring elastic force is released to return to the initial position, the contact surface of the cast steel lock and the lock catch is a vertical screen surface, the lock catch plate cannot be rotated by the pulling action of the two sections of the transverse beam, and the self-locking device completes the locking. In this state, the main body of the bolt just contacts the limiting plate of the self-locking device.

[0056] (4) When disassembled, the lock catch plate can be rotated by pressing the button of the lock catch plate, and then the two connecting sections can be separated, so that the load can be repeatedly used without welding or cutting.

[0057] According to the existing arrangement of the platform structure beam, combined with the debugging equipment and the base, different numbers of main support beams, transverse support beams and transverse connecting beams are selected, only the parts are transported to the specified position, and non-welding assembly operation is carried out on the spot to form a type suitable for the existing structure and base, so that the debugging equipment load can be transmitted to the main platform structure beam.

[0058] The application will be further described in detail with reference to the drawings and specific embodiments.

[0059] As shown in the drawings, Figure 1 The load transmission frame of the embodiment is composed of a main support beam 1, a transverse support beam 2 and a transverse connecting beam 3, the transverse support beam 2 and the transverse connecting beam 3 jointly form a secondary support beam, the transverse connecting beam 3 is arranged between two sections of the main support beam 1, and the transverse support beam 2 is arranged outside the two sections of the main support beam 1 and is connected through the connecting port 14 in the main support beam 1.

[0060] As shown in the drawings, Figure 2 The main support beam 1 is composed of a square steel 11, a sealing plate 12 and a connecting piece 13, three connecting ports 14 are reserved in the middle part of the square steel 11 for the connection of the transverse support beam 2 and the transverse connecting beam 3 at different connection positions and connection requirements, and the adaptability to the position of the equipment base and the platform structure beam system is stronger. The two ends of the square steel 11 are closed by the sealing plate 12 and a group of connecting pieces 13 (three in this embodiment) are welded thereon, the spacing between the connecting pieces 13 is equivalent to the thickness, which facilitates the cross connection of the two groups of connecting pieces 13, the connecting piece 13 is a carbon steel casting, three bolt holes 131 are reserved in the middle, and the bolt is used for fixed connection after butt joint.

[0061] AsFigure 3a and Figure 3b As shown, the transverse support beam 2 consists of square steel 11, a sealing plate 21, a pin 22, and a connector 13 (consistent with the connector 13 in the main support beam 1). A pin 22 is provided at one end of the transverse support beam 2, which matches the connection port 14 in the main support beam 1; the connector 13 at the other end is used for connection with connectors of other components. The pin 22 is also a carbon steel casting, consisting of a pin body 220, a first opening reinforcement 221, a second opening reinforcement 222, and a cast steel lock 223. The first opening reinforcement 221 and the second opening reinforcement 222 are used to strengthen the bending and shear strength of the connector 13 reserved in the main support beam 1; a cast steel lock 223 with an arc-shaped upper part is provided at the end of the pin 22.

[0062] like Figure 4a and Figure 4b As shown, the transverse connecting beam 3 consists of a square steel 11, a self-locking device 31, and a freely combinable end 32. The self-locking device 31 is installed at least at one end of the square steel, and the freely combinable end 32 can be either a connector 13 or the self-locking device 31 to ensure different combinations. When the self-locking device 31 is installed, a button hole 317 is opened on the top of the square steel 11 for unlocking when the self-locking device 31 is disassembled. The self-locking device 31 is installed inside the square steel, and its elevation corresponds to that of the connection port 14 and the pin 22. It consists of a base plate 311, a rotating shaft 312, a locking plate 313, a locking buckle 314, a spring 315, a button block 316, and a limiting plate 318. The base plate 311 is installed on the inner wall of the square steel 11, and a through rotating shaft 312 is installed above it. The locking plate 313 can rotate around the rotating shaft 312. At the end of the locking plate 313, a semi-circular locking buckle 313 is provided, which corresponds to the cast steel lock 223 with a rounded top surface, so as to facilitate direct insertion during assembly. Locking mechanism; Four sets of springs 315 are provided at the end of the locking plate 313. When the springs 315 are in their natural state, the locking plate 313 is parallel to the base plate 311. This structure is mainly used for automatic locking and unlocking operations, enhancing the reliability of the connection; A button block 316 is provided in the middle of the rear of the locking plate 313. When unlocking, pressing the button block 316 will cause the locking plate 313 to rotate and the latch 314 to disengage; A limiting plate 318 is provided between the base plate 311 and the locking plate 313 to prevent the pin 22 from entering too deeply and damaging the spring set of the self-locking device 31 in case of misoperation.

[0063] The working mechanism of connector 13 is as follows Figure 5To improve the smoothness of the interface connection of the connecting piece 13, a graphene coating 132 is sprayed on the upper and lower surfaces of the connecting piece 13 to reduce friction and improve wear resistance. In combination with the elevation view and the plan view, first, the two parts to be connected are brought close to each other, and each group in the connecting piece 13 is placed in the upper and lower symmetrical gap to complete the first connection, and then the long bolt 15 is screwed from the top to complete the final connection. When disassembling, only the reverse process is needed.

[0064] The working mechanism of the latch 22 and the self-locking device 31 is shown in Figure 6 As shown, first, the latch 22 passes through the connecting port 14 in the main support beam 1, where the first and second opening reinforcing members 221 and 222 are clamped into the connecting port 14 to strengthen the local structure, and a graphene coating is also provided at the connecting port position, which has the same effect as the connecting piece 13. In this step, the cast steel lock 223 has transversely passed through the main support beam 1. Then, the two parts are further brought close, the arc surface of the cast steel lock 223 extrudes the arc surface of the lock catch 314, the lock catch plate 313 rotates around the rotating shaft 312, the end of the lock catch plate 313 extrudes the spring 315 to form a spring force, the button block 316 moves synchronously along the track, the lock catch 314 is opened, and the cast steel lock 223 slowly enters the inside of the self-locking device 31.

[0065] When further pushed and installed, the cast steel lock 223 passes through the lock catch 314, the spring 315 releases the lock catch plate 313 to return to the initial position, the contact surface between the cast steel lock 223 and the lock catch 314 increases to form self-locking, at this time, there is no gap between the parts, the top of the latch main body 220 just contacts the limiting plate 318, and the self-locking installation and splicing are completed.

[0066] If disassembly is needed, the button block 316 can be pressed to make the lock catch plate 313 rotate again, the cast steel lock 223 and the lock catch 314 have no direct contact, the lock catch is opened, and the connecting sections are separated by outward pulling force, realizing the repeated use and assembly of other types of components.

[0067] Based on the above working principle, as shown in Figure 7The diagram shows a typical arrangement of the assembled structure on the platform in this embodiment. In this embodiment, the platform structural beams 4 are relatively sparse. Without a load transfer frame, the equipment base and the beam system would be misaligned, easily causing deformation and damage to the deck structure. Considering both the location of the equipment foundation base and the "well"-shaped platform structural beams, six main support beams 1 and three corresponding sets of transverse support beams 2 and transverse connecting beams 3 are selected for assembly and connection. The assembled main support beams 1 and transverse connecting beams 3 correspond to the equipment base. Simultaneously, the two outer transverse connecting beams 3 correspond to the platform structural beams 4, allowing the equipment load to be transferred through the six main support beams 1 and three transverse connecting beams 3 to the four structural beams of the "well"-shaped platform structural beams 4, ensuring a reasonable load transfer path. Furthermore, this invention avoids on-site hot work, is simple to assemble and disassemble, and has strong adaptability, providing an efficient and reliable solution for the arrangement of temporary equipment during land-based commissioning of offshore converter stations.

[0068] The above specific embodiments are used to explain and illustrate the present invention, and are only preferred embodiments of the present invention, not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made to the present invention within the spirit and scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A modular load transfer frame for land-based commissioning of an offshore converter station, characterized in that: This includes the main support beam, the transverse connecting beam, and the transverse support beam; The main support beam includes square steel, end plates for sealing both ends of the square steel, and connectors set on the end plates. The connectors are used to connect two adjacent main support beams. The square steel has multiple connection ports on its side, which are used to connect transverse connecting beams and transverse support beams. The transverse support beam and the transverse connecting beam together form a secondary support beam; The transverse support beam includes square steel, sealing plates for sealing both ends of the square steel, pins, and connectors. The connectors are used to connect two adjacent transverse support beams or to connect a transverse support beam with a transverse connecting beam. The transverse connecting beam includes square steel, sealing plates for sealing both ends of the square steel, and at least one self-locking device; the self-locking device is installed on the sealing plate at the end of the square steel, and the self-locking device on the transverse connecting beam cooperates with the pin on the transverse support beam in the connection port of the main support beam.

2. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 1, characterized in that: The connecting parts at both ends of the main support beam include a first connecting part and a second connecting part. Both the first connecting part and the second connecting part include three connecting plates. The three connecting plates of the first connecting part of the first main support beam and the three connecting plates of the second connecting part of the second main support beam are staggered so that the two cross and close and are locked by bolts.

3. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 2, characterized in that: The outer surface of the connecting plate is coated with a graphene coating.

4. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 1, characterized in that: The pin is provided with a first opening reinforcement, a second opening reinforcement and a cast steel lock; The cast steel lock is mounted on the outer end of the pin. The first opening reinforcement is located near the sealing plate of the transverse support beam. The second opening reinforcement is located between the cast steel lock and the first opening reinforcement and is located near the cast steel lock.

5. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 4, characterized in that: The top of the cast steel lock has an arc surface.

6. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 4, characterized in that: The width of the second opening reinforcement is greater than the width of the first opening reinforcement.

7. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 1, characterized in that: The self-locking device includes a base plate, a rotating shaft, a locking plate, a locking buckle, a spring, and a button block; A pivot is provided above the base plate, and the pivot passes through the side wall of the transverse connecting beam. The extension direction of the pivot is perpendicular to the insertion direction of the pin. A locking plate passes through the pivot, and the locking plate has a latch at the end facing the pin. The locking plate has multiple springs at the end away from the pin, and the two ends of the springs are fixed to the pin and the base plate, respectively. A button block is provided on the upper surface of the locking plate, and the button block is located at the end of the locking plate with springs. A button hole is provided on the transverse connecting beam at a position corresponding to the button block.

8. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 7, characterized in that: The self-locking device is also provided with a limiting plate, which is set on the base plate and is positioned between the latch and the spring to separate the pin and the spring.

9. The modular load transfer frame for land-based commissioning of an offshore converter station according to claim 7, characterized in that: The end face of the latch that mates with the pin is an arc surface.

10. The application of the modular load transfer frame for land commissioning of offshore converter stations according to any one of claims 1-9 on an offshore converter station platform.

Images