Supporting system of converter station valve hall direct current wall bushing and converter station

Abstract

The invention relates to the field of power systems, and discloses a supporting system of a converter station valve hall direct-current wall bushing and a converter station. The system comprises an adapter flange plate, a sleeve connecting plate and a peripheral connecting plate. The adapter flange plate is provided with a sleeve opening, and the valve hall direct-current wall bushing is arranged in the sleeve opening in a penetrating mode. The valve hall direct current wall bushing is sleeved with the bushing adapter plate, a plurality of corresponding mounting screw holes are formed in the bushing connecting plate and the adapter flange plate, and the bushing connecting plate is used for enabling the bushing to be detachably fixed to the adapter flange plate. The peripheral connecting plate is arranged along the edge of the adapter flange plate, a plurality of corresponding connecting screw holes are formed in the peripheral connecting plate and the adapter flange plate, the peripheral connecting plate is used for detachably fixing the adapter flange plate to the bearing structure frame, and the outer edge of the peripheral connecting plate is fixedly connected with the bearing structure frame. The adapter flange plate is configured to be disassembled together with the valve hall direct current wall bushing when the valve hall direct current wall bushing is replaced. Through the system, the difficulty of replacing the wall bushing of the converter station can be reduced, the operation time is reduced, and the system can meet the requirements of different hanging positions when the suspension insulator of the wall bushing is installed.

Description

Technical Field

[0001] The present application relates to the field of electric power systems, and in particular to a supporting system for a DC wall bushing in a valve hall of a converter station that can be quickly replaced, and a converter station. Background Art

[0002] The DC wall bushing equipment in the valve hall is one of the important power equipment in the converter station, and is widely used in the transmission and conversion of DC current. During the operation of the converter station, if the wall bushing equipment fails, it is necessary to shut down the power for maintenance to ensure the normal operation of the equipment. However, due to the large size and weight of the wall bushing equipment, its replacement operation has a high construction difficulty, and the operation process requires skilled lifting equipment operators to work closely with equipment operation and maintenance personnel to safely "pull out" the faulty equipment from the wall opening. Due to the long construction period and complex operation, the existing replacement process is inefficient, and there are certain safety hazards in the operation process.

[0003] In addition to the construction difficulties, the current technology also has the problem of interface incompatibility. Wall bushings from different manufacturers have different interface requirements and are almost not interchangeable, which requires the converter station to maintain a long-term spare parts supply relationship with the equipment supplier. This dependency not only limits the replacement of equipment, but also affects the introduction and application of new technologies and new products. Therefore, the equipment update cycle of the converter station has been unable to keep up with technological development for a long time, which has greatly limited the improvement of equipment performance and the improvement of the overall operating efficiency of the converter station.

[0004] Traditionally designed and manufactured supporting components are usually integrally welded to the load-bearing components to ensure the strength of the structure. However, this design method requires on-site cutting and welding when adjusting the supporting components, which will not only damage the load-bearing components, but also pollute the indoor clean space. Even if the bushing is replaced with the same model as the original equipment, it can weigh several tons and needs to be accurately passed through the narrow flange hole, which places very high demands on construction personnel and lifting equipment. The construction period is long and the construction speed cannot be increased. Moreover, when the power outage maintenance cycle of the converter station is only 1 to 2 weeks, the time for on-site cutting, welding and component anti-corrosion coating repair operations often exceeds the equipment maintenance time. The extended power outage maintenance time is bound to affect the power supply capacity of the regional power grid, reduce the safety of the power grid, and thus affect the production capacity of local social enterprises.

[0005] In addition, the wiring terminals of DC wall bushings usually need to be installed with suspension insulators to hang equalizing balls. The length of the bushings and the location of the hanging points vary between different manufacturers. In the prior art, the method of hanging is adopted by adding lifting ears through the angle steel frame on the outer jacket of the load-bearing beam. However, since the rigidity of the angle steel frame itself is weak and the processing accuracy is difficult to ensure that it can fasten the load-bearing beam, drilling or welding operations are required at the construction site. In addition, the newly added angle steel frame cannot ensure that the height of the lifting ear is consistent with the original lifting ear, which increases the difficulty of adjusting the suspension insulator. If multiple lifting ears are used, it is difficult to ensure the vertical state of the suspension insulator, and the actual position of the wiring terminal is difficult to accurately control, which affects the stability and safety of the equipment.

[0006] In summary, the existing technology has problems such as long construction period, complex operation, and limited equipment update in the replacement and maintenance process of DC wall bushing equipment. A more efficient and feasible technical solution is urgently needed to improve the maintenance efficiency of converter stations, shorten power outage time, and realize sustainable update and application of equipment. Summary of the invention

[0007] The purpose of this application is to provide a support system for a DC wall bushing in a converter station valve hall and a converter station, which simplifies the installation and maintenance process of the DC wall bushing, significantly improves the equipment replacement efficiency, reduces the construction difficulty, and enhances the flexibility and safety of the system.

[0008] The present application discloses a support system for a DC wall bushing in a converter station valve hall, comprising:

[0009] A transfer flange plate, wherein the transfer flange plate is provided with a sleeve opening for allowing the valve hall DC wall sleeve to pass therethrough;

[0010] A casing connecting plate, wherein the casing adapter plate is sleeved on the outside of the DC wall-penetrating casing of the valve hall, and a plurality of corresponding mounting screw holes are provided on the casing connecting plate and the adapter flange plate, and the casing connecting plate is used to detachably fix the casing to the adapter flange plate;

[0011] A peripheral connecting plate, the peripheral connecting plate is arranged along the edge of the adapter flange plate, the peripheral connecting plate and the adapter flange plate are provided with a plurality of corresponding connecting screw holes, the peripheral connecting plate is used to detachably fix the adapter flange plate to the load-bearing structure frame, and the outer edge of the peripheral connecting plate is fixedly connected to the load-bearing structure frame;

[0012] The adapter flange plate is configured to be disassembled together with the valve hall DC wall bushing when the valve hall DC wall bushing is replaced.

[0013] In a preferred example, the connection terminal of the DC wall bushing in the valve hall is further provided with a suspension insulator hanging a voltage-equalizing ball, and the suspension insulator is hung by a sliding lug on a load-bearing hanging beam.

[0014] In a preferred embodiment, the sliding lug comprises: a hanging plate, a lug plate, a tension bolt and a lug bolt;

[0015] A slide rail is provided at the lower end of the load-bearing hanging beam, the hanging plates are hung on both sides of the slide rail, and the tension bolts are passed through the lower ends of the hanging plates for applying a pre-tightening force so that the hanging plates are clamped at the lower part of the slide rail;

[0016] The ear plate is provided between the lower ends of the two hanging plates, and the tension bolt is passed through the hanging plate and the ear plate to fix the ear plate with the hanging plate, and is used to connect the pin shaft of the suspension insulator;

[0017] The sliding lug is configured to adjust the tightness of the tension bolt to slide or fix along the direction of the slide rail.

[0018] In a preferred example, the diameter of the sleeve opening provided on the adapter flange plate matches the outer diameter of the valve hall DC wall sleeve.

[0019] In a preferred example, the adapter flange plate is arranged on the valve hall side of the converter station.

[0020] In a preferred example, the sliding lifting lug is arranged on a load-bearing hanging beam inside the valve hall of the converter station.

[0021] In a preferred example, the outer edge of the peripheral connecting plate is welded and fixed to the load-bearing structure frame.

[0022] In a preferred example, the adapter flange plate is arranged in the load-bearing structure frame in a direction perpendicular to the ground, and the adapter flange plate has an angle with the vertical plane.

[0023] In a preferred example, a mounting bolt is passed through the mounting screw hole, and the mounting bolt is used to connect and fix the sleeve connecting plate and the adapter flange plate. A connecting bolt is passed through the connecting screw hole, and the connecting bolt is used to connect and fix the adapter flange plate and the peripheral connecting plate.

[0024] The present application also discloses a converter station, comprising: a valve hall, a DC field, a valve hall DC wall bushing, and a support system for the converter station valve hall DC wall bushing as described above;

[0025] The valve hall DC wall bushing connects the valve hall and the DC field, and the support system of the converter station valve hall DC wall bushing is used to support the valve hall DC wall bushing.

[0026] In the implementation mode of the present application, by providing an adapter flange plate, the DC wall bushing of the valve hall can be conveniently connected to the load-bearing structure, and by providing a detachable mounting bolt, the bushing can be quickly and directly disassembled together with the adapter flange plate in the event of a fault, avoiding the complicated cutting and welding operations in the traditional solution, and when the wall bushing needs to be reinstalled later, it is no longer necessary to accurately pass through the narrow bushing opening. This structure effectively shortens the equipment replacement time and improves the operation and maintenance efficiency of the converter station. The structure of the adapter flange plate ensures the stable fixation of the bushing, while reducing the complexity of operations during the construction process, greatly reducing the maintenance cycle.

[0027] Furthermore, by setting up sliding lugs, the suspension insulators are provided with greater flexibility and stability. The position of the lugs can be freely adjusted along the direction of the bushing without the need for on-site drilling or welding, thus avoiding the limitations of the traditional method of fixing the lugs. In addition, the design of the sliding lugs ensures the stability of the lug position, and the lug position can be kept unchanged even in emergencies such as earthquakes, reducing possible safety hazards during installation.

[0028] A large number of technical features are recorded in the specification of this application, which are distributed in various technical solutions. If all possible combinations of technical features of this application (i.e., technical solutions) are to be listed, the specification will be too long. In order to avoid this problem, the various technical features disclosed in the above-mentioned invention content of this application, the various technical features disclosed in the various embodiments and examples below, and the various technical features disclosed in the accompanying drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all deemed to have been recorded in this specification), unless the combination of such technical features is technically infeasible. For example, in one example, feature A+B+C is disclosed, and in another example, feature A+B+D+E is disclosed, and features C and D are equivalent technical means that play the same role. Technically, only one can be used, and it is impossible to use them at the same time. Feature E can be combined with feature C technically. Then, the solution of A+B+C+D should not be deemed to have been recorded because it is technically infeasible, and the solution of A+B+C+E should be deemed to have been recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of a support system for a DC wall bushing in a converter station valve hall according to an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of a support system for a DC wall bushing in a converter station valve hall according to an embodiment of the present application;

[0031] Figure 3This is a schematic diagram of a sliding lug structure of a support system for a DC wall bushing in a converter station valve hall according to an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the sliding ear structure of the support system of the DC wall bushing in the valve hall of the converter station according to one embodiment of the present application;.

[0033] Description of reference numerals:

[0034] 1- adapter flange plate, 2- bushing connection plate, 3- peripheral connection plate, 4- DC wall bushing, 5- load-bearing structure frame, 6- hanging plate, 7- ear plate, 8- tension bolt, 9- ear bolt, 10- slide rail, 11- mounting bolt, 12- connection bolt. DETAILED DESCRIPTION

[0035] In the following description, many technical details are provided to help readers better understand the present application. However, those skilled in the art can understand that the technical solution claimed in the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0037] The first embodiment of the present application relates to a support system for a DC wall bushing 4 in a converter station valve hall, and its structure diagram is as follows: Figure 1-4 As shown, it includes: a transition flange plate 1, a sleeve connecting plate 2, and a peripheral connecting plate 3.

[0038] The adapter flange plate 1 is provided with a sleeve opening for inserting the valve hall DC wall sleeve 4 therein. The sleeve adapter plate is sleeved on the outside of the valve hall DC wall sleeve 4, and the sleeve connecting plate 2 and the adapter flange plate 1 are provided with a plurality of corresponding mounting screw holes, and the sleeve connecting plate 2 is used to removably fix the sleeve to the adapter flange plate 1. The peripheral connecting plate 3 is arranged along the edge of the adapter flange plate 1, and the peripheral connecting plate 3 and the adapter flange plate 1 are provided with a plurality of corresponding connecting screw holes, and the peripheral connecting plate 3 is used to removably fix the adapter flange plate 1 to the load-bearing structure frame 5, and the outer edge of the peripheral connecting plate 3 is fixedly connected to the load-bearing structure frame 5. The adapter flange plate 1 is configured to be disassembled together with the valve hall DC wall sleeve 4 when the valve hall DC wall sleeve 4 is replaced.

[0039] In an optional embodiment, the connection terminal of the valve hall DC wall bushing 4 is also provided with a suspension insulator hanging equalizing ball, and the suspension insulator is hung by a sliding lug on a load-bearing suspension beam. The function of the suspension insulator hanging equalizing ball is to ensure the electrical insulation performance and mechanical stability of the electrical connection part. In order to ensure the stable hanging of the suspension insulator, the suspension insulator is hung by a sliding lug on a load-bearing suspension beam, so that the suspension insulator can adapt to various external forces (such as wind force or vibration of equipment) during operation, and the design of the sliding lug ensures the dynamic adjustment ability of the hanging system when bearing different loads, increasing the number of lugs or changing the lug model. Thereby effectively reducing the stress concentration problem caused by thermal expansion of the equipment or other factors.

[0040] In an optional embodiment, the sliding lug may include: a hanging plate 6, a hanging lug plate 7, a tension bolt 8 and a hanging lug bolt 9. A slide rail 10 is provided at the lower end of the load-bearing suspension beam, and hanging plates 6 are hung on both sides of the slide rail 10. The lower end of the hanging plate 6 is penetrated with a tension bolt 8 for applying a pre-tightening force so that the hanging plate 6 is clamped at the lower part of the slide rail 10. A hanging lug plate 7 is provided between the lower ends of the two hanging plates 6, and the tension bolt 8 is penetrated on the hanging plate 6 and the hanging lug plate 7 so that the hanging lug plate 7 is fixedly connected with the hanging plate 6, and is used to connect the pin shaft of the suspension insulator. The sliding lug is configured to adjust the tightness of the tension bolt 8 to slide or fix along the direction of the slide rail 10. Further, the sliding lug includes a steel slide rail 10 welded below the load-bearing suspension beam, and hanging plates 6 are provided on both sides of the slide rail 10. The hanging plate 6 can be clamped at the lower part of the slide rail 10 by the pre-tightening force applied by the tension bolt 8. Due to the space reserved in the middle of the hanging plates 6 on both sides, the applied pre-tightening force can press the slide rail 10, so that friction is generated between the slide rail 10 and the hanging plate 6, thereby effectively resisting the horizontal force in the length direction of the suspension beam. The lower part of the hanging plate 6 is fixed with the hanging ear plate 7 by the connecting bolt 12, and the hanging ear plate 7 is used to connect the pin shaft of the suspension insulator. When the position of the hanging ear needs to be adjusted, it is only necessary to slightly loosen the tension bolt 8 so that the hanging plate 6 can slide along the slide rail 10 to the desired position, and then retighten the tension bolt 8 after the adjustment is completed. The sliding hanging ear of the present application can not only maintain stability when bearing load, but also quickly adjust the position of the hanging ear during maintenance.

[0041] In an optional embodiment, the diameter of the sleeve opening provided on the adapter flange plate 1 matches the outer diameter of the valve hall DC wall bushing 4. Specifically, the sleeve opening on the adapter flange plate 1 is designed to completely match the outer diameter of the valve hall DC wall bushing 4, thereby ensuring that the two can be accurately connected to prevent loosening. The connection area between the adapter flange plate 1 and the valve hall DC wall bushing 4 can be an adjustable or replaceable sleeve connecting plate 2, so that it can be easily disassembled or reassembled during maintenance or replacement. As described above, a plurality of corresponding mounting screw holes can be provided on the sleeve connecting plate 2 and the adapter flange plate 1, which are used to connect the two by mounting bolts 11. The position and number of the mounting screw holes can be changed according to actual needs, and the cooperation of the mounting bolts 11 and the mounting screw holes can ensure a stable mechanical connection between the valve hall DC wall bushing 4 and the adapter flange plate 1.

[0042] In an optional embodiment, the adapter flange plate 1 is arranged on the valve hall side of the converter station.

[0043] In an optional embodiment, the sliding lifting lug is arranged on a load-bearing lifting beam inside the valve hall of the converter station.

[0044] In an optional embodiment, the outer edge of the peripheral connecting plate 3 is welded and fixed to the load-bearing structure frame 5. By welding the outer edge of the peripheral connecting plate 3 to the load-bearing structure frame 5, not only the strength and durability of the connection can be ensured, but also external forces (such as vibration, impact, etc.) can be effectively resisted to prevent the connection parts from loosening or being damaged.

[0045] In an optional embodiment, the adapter flange plate 1 is arranged in a direction perpendicular to the ground in the load-bearing structure frame 5, and the adapter flange plate 1 has an angle with the vertical plane. When the DC wall bushing 4 passes through the structure, it will be affected by gravity and external environmental forces (such as thermal expansion and contraction or vibration). If the adapter flange plate 1 is completely perpendicular to the ground, the connection between the bushing and the flange plate may produce stress concentration due to uneven force, increasing the risk of fatigue or damage to the connection point. The inclined setting of the adapter flange plate 1 of the present application can make the force of the bushing more evenly distributed to the adapter flange plate 1 and the connecting bolts 12, thereby reducing the local stress concentration phenomenon and improving the stability and safety of the system. And the inclination angle of the adapter flange plate 1 matches the inclination angle of the wall bushing, which can reduce the mechanical stress in the connection area. The adapter flange plate 1 may also not have an angle with the vertical plane, and the specific installation direction matches the installation angle of the actual valve hall DC wall bushing 4.

[0046] In an optional embodiment, a mounting bolt 11 is passed through the mounting screw hole, and the mounting bolt 11 is used to connect and fix the sleeve connecting plate 2 and the adapter flange plate 1. A connecting bolt 12 is passed through the connecting screw hole, and the connecting bolt 12 is used to connect and fix the adapter flange plate 1 and the peripheral connecting plate 3.

[0047] In order to better understand the technical solution of the present application, a specific example is provided below for illustration. The details listed in the example are mainly for ease of understanding and are not intended to limit the scope of protection of the present application.

[0048] In a specific embodiment, a support system for a DC wall bushing 4 in a converter station valve hall is provided to solve the problems of difficulty in installing and disassembling the DC wall bushing 4 and poor flexibility of the hanging device in the prior art.

[0049] The system includes an adapter flange plate 1, a bushing connection plate 2, a peripheral connection plate 3, and a sliding lug for hanging a suspended insulator. The adapter flange plate 1 is provided with a bushing opening, the diameter of which matches the outer diameter of the valve hall DC wall bushing 4, so that the bushing can be accurately inserted therein, and the bushing is fixed to the adapter flange plate 1 through the bushing connection plate 2. The bushing connection plate 2 and the adapter flange plate 1 are both provided with a plurality of corresponding mounting screw holes, and the connection between the two is achieved by mounting bolts 11. The outer edge of the adapter flange plate 1 is fixedly connected to the peripheral connection plate 3 through a plurality of connection screw holes, and the outer edge of the peripheral connection plate 3 is fixed to the load-bearing structure frame 5 by welding.

[0050] At the opening of the load-bearing structure, a peripheral connecting plate 3 is provided for supporting the adapter flange plate 1. The inner hole periphery of the adapter flange plate 1 is connected to the flange of the DC wall bushing 4 through bolt holes, and the outer edge is fixed to the peripheral connecting plate 3 through high-strength connecting bolts 12. The bolt holes on the adapter flange plate 1 are designed according to the interface requirements of the wall bushing to ensure adaptability. In actual operation, when the wall bushing needs to be removed or replaced, the connecting bolts 12 are first disassembled to separate the adapter flange plate 1 from the peripheral connecting plate 3; then the DC wall bushing 4 and the adapter flange plate 1 are fixed by a lifting device, and the DC wall bushing 4 is hoisted and removed together with the adapter flange plate 1 through a synchronous lifting operation. After the DC wall bushing 4 is hoisted and removed and replaced, the DC wall bushing 4 is hoisted and fixed together with the adapter flange plate 1 on the peripheral connecting plate 3 as a whole, without the need to accurately align the DC wall bushing 4 with the bushing opening. When replacing a DC wall bushing 4 of a different type, a new adapter flange plate 1 can be remade according to specific interface requirements and installed as a whole after being matched with the new bushing, which simplifies the construction process and improves the compatibility and adaptability of the equipment.

[0051] The suspension of the suspension insulator is realized by the sliding lugs arranged on the load-bearing suspension beam. A steel slide rail 10 is welded below the load-bearing suspension beam, and a hanging plate 6 is installed on both sides of the slide rail 10. The hanging plate 6 is clamped at the lower part of the slide rail 10 by the pre-tightening force applied by the tension bolt 8. The space reserved in the middle of the hanging plate 6 enables the pre-tightening force applied by the tension bolt 8 to press the slide rail 10, and resist the horizontal force along the length direction of the suspension beam by friction, so as to ensure the stability and reliability of the system. The lower part of the hanging plate 6 is fixed with the lug plate 7 by the connecting bolt 12, and the lug plate 7 is connected to the pin of the suspension insulator to ensure the reliable connection of the insulator suspension. During the operation or maintenance of the equipment, if the position of the suspension device needs to be adjusted, the tension bolt 8 can be loosened to make the hanging plate 6 out of the tight state, and then the hanging plate 6 can be slid along the slide rail 10 to the desired position, and the tension bolt 8 can be tightened again to fix it after it is adjusted in place. This sliding lug can flexibly adjust the installation position of the insulator, adapt to the layout requirements of various equipment, and provide convenience for inspection and maintenance operations.

[0052] Through the above structural design and operation process, this embodiment realizes efficient operation of the DC wall bushing 4 during installation, replacement and maintenance, and at the same time improves the flexibility and adaptability of the insulator hanging device. The combination of the adapter flange plate 1 and the sliding lug can meet the requirements of different types of equipment and complex installation environments, and optimizes the safety of equipment operation and the convenience of construction.

[0053] The second embodiment of the present application relates to a converter station, comprising: a valve hall, a DC field, a valve hall DC wall bushing 4, and a support system for the converter station valve hall DC wall bushing 4 as described above. The valve hall DC wall bushing 4 connects the valve hall and the DC field, and the support system for the converter station valve hall DC wall bushing 4 is used to support the valve hall DC wall bushing 4.

[0054] This embodiment is a product implementation method that includes the first embodiment. All specific structures, connection methods, and functional improvements in the first embodiment can be applied in this embodiment through flexible adjustment. In addition, based on actual needs, this embodiment can also appropriately modify or expand the technical features described in the first embodiment to better adapt to the site environment and usage requirements. Therefore, the product implementation method of this embodiment not only inherits the basic advantages of the first embodiment, but also has higher flexibility and adaptability, and can meet the replacement and support requirements of different types of DC wall bushings, while ensuring the reliability and safety of system operation.

[0055] It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements. In the application documents of this patent, if it is mentioned that an action is performed according to an element, it means that the action is performed at least according to the element, which includes two situations: performing the action only according to the element, and performing the action according to the element and other elements. Expressions such as multiple, multiple, and multiple include 2, 2 times, 2 kinds, and more than 2, more than 2 times, and more than 2 kinds.

[0056] All documents mentioned in this application are considered to be included in the disclosure of this application as a whole, so that they can be used as the basis for modification when necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art can make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A support system for a DC wall bushing in a converter station valve hall, characterized in that: include: A transfer flange plate, wherein the transfer flange plate is provided with a sleeve opening for allowing the valve hall DC wall sleeve to pass therethrough; A casing connecting plate, wherein the casing adapter plate is sleeved on the outside of the DC wall-penetrating casing of the valve hall, and a plurality of corresponding mounting screw holes are provided on the casing connecting plate and the adapter flange plate, and the casing connecting plate is used to detachably fix the casing to the adapter flange plate; A peripheral connecting plate, the peripheral connecting plate is arranged along the edge of the adapter flange plate, the peripheral connecting plate and the adapter flange plate are provided with a plurality of corresponding connecting screw holes, the peripheral connecting plate is used to detachably fix the adapter flange plate to the load-bearing structure frame, and the outer edge of the peripheral connecting plate is fixedly connected to the load-bearing structure frame; The adapter flange plate is configured to be disassembled together with the valve hall DC wall bushing when the valve hall DC wall bushing is replaced.

2. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: The connection terminal of the DC wall bushing in the valve hall is also provided with a suspension insulator hanging equalizing ball, and the suspension insulator is hung by a sliding lug on the load-bearing hanging beam.

3. The supporting system of the DC wall bushing in the converter station valve hall according to claim 2, characterized in that: The sliding lifting lug comprises: a hanging plate, a lifting lug plate, a tension bolt and a lifting lug bolt; A slide rail is provided at the lower end of the load-bearing hanging beam, the hanging plates are hung on both sides of the slide rail, and the tension bolts are passed through the lower ends of the hanging plates for applying a pre-tightening force so that the hanging plates are clamped at the lower part of the slide rail; The ear plate is provided between the lower ends of the two hanging plates, and the tension bolt is passed through the hanging plate and the ear plate to fix the ear plate with the hanging plate, and is used to connect the pin shaft of the suspension insulator; The sliding lug is configured to adjust the tightness of the tension bolt to slide or fix along the direction of the slide rail.

4. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: The diameter of the sleeve opening arranged on the adapter flange plate matches the outer diameter of the valve hall DC wall sleeve.

5. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: The adapter flange plate is arranged on the valve hall side of the converter station.

6. The supporting system for the DC wall bushing in the converter station valve hall according to claim 2, characterized in that: The sliding lifting lug is arranged on a load-bearing hanging beam inside the valve hall of the converter station.

7. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: The outer edge of the peripheral connecting plate is welded and fixed to the load-bearing structure frame.

8. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: The adapter flange plate is arranged in the load-bearing structure frame in a direction perpendicular to the ground, and the adapter flange plate has an angle with the vertical surface.

9. The supporting system for the DC wall bushing in the converter station valve hall according to claim 1, characterized in that: A mounting bolt is inserted into the mounting screw hole, and the mounting bolt is used to connect and fix the sleeve connecting plate and the adapter flange plate. A connecting bolt is inserted into the connecting screw hole, and the connecting bolt is used to connect and fix the adapter flange plate and the peripheral connecting plate.

10. A converter station, characterized in that: include: A valve hall, a DC field, a valve hall DC wall bushing, and a supporting system for the converter station valve hall DC wall bushing as claimed in any one of claims 1 to 9; The valve hall DC wall bushing connects the valve hall and the DC field, and the support system of the converter station valve hall DC wall bushing is used to support the valve hall DC wall bushing.

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