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

Abstract

The utility model 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 power systems, in particular to a support system of a DC wall bushing of a valve hall of a converter station which can be quickly replaced and a converter station. BACKGROUND

[0002] The valve hall DC wall bushing device is one of the important power devices 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 device fails, it needs to be overhauled to ensure the normal operation of the device. However, due to the large size and weight of the wall bushing device, the replacement operation has high construction difficulty, and skilled hoisting equipment operators and device operation and maintenance personnel are required to closely cooperate during the operation process to safely "pull out" the faulty device from the wall opening. Due to the long construction period and complex operation, the existing replacement process is low in efficiency, and there are certain safety hazards in the operation process.

[0003] In addition to the construction difficulty, the current technology also has the problem of interface incompatibility. Different manufacturers' wall bushings have different interface requirements and almost no replaceability, which makes the converter station have to maintain a long-term spare parts supply relationship with the equipment supplier. This dependent relationship not only limits the update of the 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 the development of technology for a long time, which greatly limits the improvement of equipment performance and the improvement of the overall operation efficiency of the converter station.

[0004] The support member designed and manufactured in the traditional way is usually integrally welded with the load-bearing member to ensure the strength of the structure. However, this design method must be on-site cutting and welding operation when adjusting the support member, which not only damages the load-bearing member, but also pollutes the indoor clean space. Even if the sleeve of the same model as the original equipment is replaced, due to its weight of several tons and the need to accurately pass through the narrow flange hole, the requirements for construction personnel and hoisting equipment are very high. The construction period is long, and the construction speed cannot be improved. Moreover, in the case of the power outage maintenance period of the converter station being only 1 to 2 weeks, the time for on-site cutting, welding and component corrosion coating repair operation often exceeds the equipment maintenance time. The extension of the power outage maintenance time will inevitably 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 terminal of the DC wall bushing usually needs to be hung with a suspension insulator and a grading sphere. The length and hanging point position of the bushing differ between different manufacturers. In the prior art, the method of adding a lug to the outer sleeve angle steel frame of the bearing beam is used for hanging, but due to the weak rigidity of the angle steel frame itself and the difficulty in ensuring the fastening precision of the bearing beam, punching or welding operations need to be performed on the construction site. In addition, the newly added angle steel frame cannot ensure that the height of the lug is consistent with the original lug, thereby increasing the adjustment difficulty of the suspension insulator. If the method of multiple lugs is used, it is difficult to ensure the vertical state of the suspension insulator, and the actual position of the terminal is difficult to accurately control, thereby affecting the stability and safety of the equipment.

[0006] In summary, the prior art has problems such as long construction period, complex operation, and limited equipment updating during the replacement and maintenance of the DC wall bushing equipment, and a more efficient and feasible technical solution is urgently needed to improve the maintenance efficiency of the converter station, shorten the power-off time, and realize the sustainable updating and application of the equipment. SUMMARY

[0007] The purpose of the present application is to provide a support system for a DC wall bushing in a valve hall of a converter station 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 valve hall of a converter station, comprising:

[0009] An adapter flange plate is provided with a bushing opening for allowing the valve hall DC wall bushing to be arranged therein;

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

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

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

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

[0014] In a preferred example, the sliding lifting lug comprises a hanging plate, a lifting lug plate, a tension bolt and a lifting lug bolt.

[0015] The lower end of the load-bearing lifting beam is provided with a sliding rail, and the hanging plate is hung on both sides of the sliding rail, and the lower end of the hanging plate is provided with the tension bolt for applying pre-tightening force to make the hanging plate clamped on the lower part of the sliding rail.

[0016] The lower end of the two hanging plates is provided with the lifting lug plate, and the tension bolt is provided on the hanging plate and the lifting lug plate to make the lifting lug plate fixedly connected with the hanging plate and used for connecting the pin shaft of the suspension insulator.

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

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

[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 the load-bearing lifting beam inside the valve hall of the converter station.

[0021] In a preferred example, the outer edge of the peripheral connecting plate is fixedly welded with 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 included angle with the vertical plane.

[0023] In a preferred example, the mounting screw hole is provided with a mounting bolt for connecting and fixing the bushing connecting plate and the adapter flange plate, and the connecting screw hole is provided with a connecting bolt for connecting and fixing the adapter flange plate and the peripheral connecting plate.

[0024] The application further discloses a converter station, comprising a valve hall, a DC field, a valve hall DC wall bushing and a support system of 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 for supporting the valve hall DC wall bushing.

[0026] In the embodiments of the present application, the valve hall DC through-wall bushing can be conveniently connected with the load-bearing structure by setting the adapter flange plate, and the bushing can be quickly and directly removed together with the adapter flange plate in case of failure by setting the detachable mounting bolt, avoiding the complex cutting and welding operation in the traditional scheme, and when the through-wall bushing needs to be reinstalled subsequently, it is no longer necessary to accurately pass through the narrow bushing opening, which 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 operation complexity in the construction process, greatly reducing the maintenance period.

[0027] Further, by setting the sliding lifting lug, greater flexibility and stability are provided for the hanging of the suspended insulator, the position of the lifting lug can be freely adjusted in the direction of the bushing, without the need for on-site punching or welding, avoiding the limitations of the fixed position of the lifting lug in the traditional method. In addition, the design of the sliding lifting lug ensures the stability of the position of the lifting lug, which can remain unchanged even in the event of an earthquake or other sudden situations, reducing the possible safety hazards in the installation process.

[0028] A large number of technical features are described in the specification of the present application, which are distributed in various technical solutions. If all possible combinations of technical features (i.e. technical solutions) of the present application are listed, the specification will be too long. In order to avoid this problem, each technical feature disclosed in the above summary of the application, each technical feature disclosed in the following embodiments and examples, and each technical feature disclosed in the drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all considered to have been described in the specification), unless such combination of technical features is technically infeasible. For example, features A+B+C are disclosed in one example, features A+B+D+E are disclosed in another example, features C and D are equivalent technical means that play the same role, and can only be used at a time, and feature E can be combined with feature C technically, then the scheme of A+B+C+D should not be considered to have been described because it is technically infeasible, and the scheme of A+B+C+E should be considered to have been described. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

[0033] BRIEF DESCRIPTION OF DRAWINGS

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

[0035] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application.

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0037] A first embodiment of the present application relates to a support system of a DC wall bushing 4 of a valve hall of a converter station, a structural diagram of which is shown in Figures 1-4 The support system comprises an adapter flange plate 1, a bushing connecting plate 2, and a peripheral connecting plate 3.

[0038] The adapter flange plate 1 is provided with a bushing opening for allowing the valve hall DC wall bushing 4 to be arranged therein. The bushing adapter plate is arranged outside the valve hall DC wall bushing 4. The bushing connecting plate 2 and the adapter flange plate 1 are provided with a plurality of corresponding mounting screw holes. The bushing connecting plate 2 is used to detachably fix the bushing to the adapter flange plate 1. The peripheral connecting plate 3 is arranged along the edge of the adapter flange plate 1. The peripheral connecting plate 3 and the adapter flange plate 1 are provided with a plurality of corresponding connecting screw holes. The peripheral connecting plate 3 is used to detachably fix the adapter flange plate 1 to the load-bearing structure frame 5. 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 detached together with the valve hall DC wall bushing 4 when the valve hall DC wall bushing 4 is replaced.

[0039] In an alternative embodiment, the 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 through the sliding hanger on the load-bearing 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 through the sliding hanger on the load-bearing beam, so that the suspension insulator can adapt to various external forces (such as wind force or equipment vibration) during operation, and the design of the sliding hanger ensures the dynamic adjustment capability of the hanging system when bearing different loads, and the number of hangers or the type of hangers is changed. Thus, the stress concentration problem caused by thermal expansion of the equipment or other factors is effectively reduced.

[0040] In an alternative embodiment, the sliding hanger can include a hanging plate 6, a hanger plate 7, a tension bolt 8 and a hanger bolt 9. The lower end of the load-bearing beam is provided with a sliding rail 10, and the hanging plate 6 is hung on both sides of the sliding rail 10. The lower end of the hanging plate 6 is provided with a tension bolt 8 for applying a pre-tightening force to make the hanging plate 6 clamped at the lower part of the sliding rail 10. The hanger plate 7 is arranged between the lower ends of the two hanging plates 6, and the tension bolt 8 is arranged on the hanging plate 6 and the hanger plate 7 to fix the hanger plate 7 and the hanging plate 6, and is used to connect the pin shaft of the suspension insulator. The sliding hanger is configured to adjust the tightness of the tension bolt 8 to slide or fix along the direction of the sliding rail 10. Further, the sliding hanger includes a steel sliding rail 10 welded below the load-bearing beam, and the hanging plate 6 is arranged on both sides of the sliding rail 10. By applying a pre-tightening force through the tension bolt 8, the hanging plate 6 can be clamped at the lower part of the sliding rail 10. Due to the space reserved in the middle of the two hanging plates 6, the applied pre-tightening force can compress the sliding rail 10, so that a friction force is generated between the sliding rail 10 and the hanging plate 6, thereby effectively resisting the horizontal force in the length direction of the hanger beam. The lower part of the hanging plate 6 is fixed with the hanger plate 7 through the connecting bolt 12, and the hanger plate 7 is used to connect the pin shaft of the suspension insulator. When it is necessary to adjust the position of the hanger, only the tension bolt 8 needs to be slightly loosened, so that the hanging plate 6 can slide along the sliding rail 10 to the desired position, and after the adjustment is completed, the tension bolt 8 is tightened again. The sliding hanger of the present application not only can maintain stability under load, but also can quickly adjust the position of the hanger 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 straight-through wall sleeve 4. Specifically, the sleeve opening on the adapter flange plate 1 is designed to perfectly match the outer diameter of the valve hall straight-through wall sleeve 4, so as to ensure accurate connection between the two and prevent loosening. The connection area between the adapter flange plate 1 and the valve hall straight-through wall sleeve 4 can be an adjustable or replaceable sleeve connection plate 2, so as to be easily disassembled or reassembled during maintenance or replacement. As described above, the sleeve connection plate 2 and the adapter flange plate 1 can be provided with a plurality of corresponding mounting screw holes for connecting the two through 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 stable mechanical connection between the valve hall straight-through wall sleeve 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 the load-bearing lifting beam inside the valve hall of the converter station.

[0044] In an optional embodiment, the outer edge of the peripheral connection plate 3 is welded and fixed with the load-bearing structural frame 5. By welding the outer edge of the peripheral connection plate 3 with the load-bearing structural 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 loosening or damage of the connection part.

[0045] In an optional embodiment, the adapter flange plate 1 is arranged in the load-bearing structural frame 5 in a direction perpendicular to the ground, and the adapter flange plate 1 has an included angle with the vertical plane. When the straight-through wall sleeve 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, stress concentration may occur at the connection between the sleeve and the flange plate due to uneven force, increasing the risk of fatigue or damage of the connection point. The inclined arrangement of the adapter flange plate 1 of the present application can make the force of the sleeve more evenly distributed to the adapter flange plate 1 and the connecting bolt 12, thereby reducing local stress concentration and improving the stability and safety of the system. The inclination angle of the adapter flange plate 1 matches the inclination angle of the wall sleeve, which can reduce the mechanical stress of the connection area. The adapter flange plate 1 can also have no included angle with the vertical plane, and the specific installation direction matches the installation angle of the actual valve hall straight-through wall sleeve 4.

[0046] In an optional embodiment, the mounting screw hole is provided with a mounting bolt 11 for connecting and fixing the sleeve connection plate 2 and the adapter flange plate 1, and the connecting screw hole is provided with a connecting bolt 12 for connecting and fixing the adapter flange plate 1 and the peripheral connection plate 3.

[0047] In order to better understand the technical solutions of the present application, a specific example is described below, and the details listed in the example are mainly for the purpose 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 of a valve hall of a converter station is provided to solve the problems of difficult installation and removal of 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 connecting plate 2, a peripheral connecting plate 3, and a sliding lifting lug for hanging a suspension 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 fixed to the adapter flange plate 1 through the bushing connecting plate 2. The bushing connecting 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 through mounting bolts 11. The outer edge of the adapter flange plate 1 is fixedly connected to the peripheral connecting plate 3 through a plurality of connecting screw holes, and the outer edge of the peripheral connecting plate 3 is fixed to the load-bearing structure frame 5 by welding.

[0050] At the opening position of the load-bearing structure, the peripheral connecting plate 3 for supporting the adapter flange plate 1 is arranged. The inner hole periphery of the adapter flange plate 1 is connected to the flange of the DC wall bushing 4 through a bolt hole, 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 using lifting equipment, and the DC wall bushing 4 is lifted and removed together with the adapter flange plate 1 through synchronous lifting operation. After replacing the DC wall bushing 4, the DC wall bushing 4 is lifted and fixed together with the adapter flange plate 1 on the peripheral connecting plate 3, without the need to accurately align the DC wall bushing 4 with the bushing opening. When replacing different types of DC wall bushings 4, a new adapter flange plate 1 can be made according to the specific interface requirements, and after being matched with the new bushing, the whole is installed, which simplifies the construction process and improves the equipment compatibility and adaptability.

[0051] The hanging of the suspension insulator is achieved by using the sliding lug arranged on the load-bearing beam. A steel slide rail 10 is welded below the load-bearing 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 of the tension bolt 8. The space reserved in the middle of the hanging plate 6 allows the pre-tightening force of the tension bolt 8 to compress the slide rail 10, and the horizontal force along the length direction of the beam is resisted by the friction force, thereby ensuring the stability and reliability of the system. The lower part of the hanging plate 6 is fixed with a lug plate 7 through a connecting bolt 12, and the lug plate 7 is connected with the pin shaft of the suspension insulator, thereby ensuring the reliable connection of the insulator hanging. During the operation or maintenance of the equipment, if it is necessary to adjust the position of the hanging device, the tension bolt 8 can be loosened to release the hanging plate 6 from the compression state, and then the hanging plate 6 is slid along the slide rail 10 to the desired position. After adjustment, the tension bolt 8 is tightened again to fix it. The sliding lug can flexibly adjust the installation position of the insulator, adapt to various equipment layout requirements, and provide convenience for maintenance and maintenance operations.

[0052] Through the above structural design and operation process, the embodiment realizes efficient operation of the DC wall bushing 4 during installation, replacement and maintenance, and 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 optimize 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 of the valve hall DC wall bushing 4 of the converter station as described above. The valve hall DC wall bushing 4 connects the valve hall and the DC field, and the support system of the valve hall DC wall bushing 4 of the converter station is used to support the valve hall DC wall bushing 4.

[0054] The product embodiment of the present embodiment includes the first embodiment, and all specific structures, connection methods and functional improvements in the first embodiment can be applied in the present embodiment by flexible adjustment. In addition, based on actual needs, the technical features described in the first embodiment can be appropriately modified or extended to better adapt to the field environment and use requirements. Therefore, the product embodiment of the present 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 this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0056] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations 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 of a valve hall of a converter station, characterized in that, The adapter flange plate is provided with a sleeve opening for allowing the valve hall DC through-wall sleeve to pass through. The sleeve adapter plate is sleeved outside the valve hall DC through-wall sleeve, and the sleeve adapter plate and the adapter flange plate are provided with a plurality of corresponding mounting screw holes. The peripheral connecting plate is arranged along the edge of the adapter flange plate, and the peripheral connecting plate and the adapter flange plate are provided with a plurality of corresponding connecting screw holes. The adapter flange plate is configured to be disassembled together with the valve hall DC through-wall sleeve when the valve hall DC through-wall sleeve is replaced. The terminal end of the valve hall DC through-wall sleeve is further provided with a suspension insulator hanging equalizing ball, and the suspension insulator is hung through a sliding lifting lug on a load-bearing lifting beam.

2. The converter station valve hall DC through-wall bushing support system of claim 1, wherein, The sliding lifting lug comprises a hanging plate, a lifting lug plate, a tension bolt and a lifting lug bolt.

3. The converter station valve hall DC wall bushing support system of claim 2, wherein, The lower end of the load-bearing lifting beam is provided with a sliding rail, and the hanging plate is hung on both sides of the sliding rail. The lower ends of the two hanging plates are provided with the lifting lug plate, and the tension bolt is sleeved on the hanging plate and the lifting lug plate to fix the lifting lug plate and the hanging plate, and is used to connect the pin shaft of the suspension insulator. The sliding lifting lug is configured to adjust the tightness of the tension bolt to slide or fix along the direction of the sliding rail. The diameter of the sleeve opening provided on the adapter flange plate matches the outer diameter of the valve hall DC through-wall sleeve.

4. The converter station valve hall DC wall bushing support system of claim 1, wherein, The adapter flange plate is arranged on the valve hall side of the converter station.

5. The converter station valve hall DC wall bushing support system of claim 1, wherein, The sliding lifting lug is arranged on the load-bearing lifting beam inside the valve hall of the converter station.

6. The converter station valve hall DC through-wall bushing support system of claim 2, wherein, The outer edge of the peripheral connecting plate is welded and fixed to the load-bearing structure frame.

7. The converter station valve hall DC wall bushing support system of claim 1, wherein, 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 included angle with the vertical plane.

8. The converter station valve hall DC wall bushing support system of claim 1, wherein, The mounting screw hole is sleeved with a mounting bolt for connecting and fixing the sleeve connecting plate and the adapter flange plate, and the connecting screw hole is sleeved with a connecting bolt for connecting and fixing the adapter flange plate and the peripheral connecting plate.

9. The converter station valve hall DC wall bushing support system of claim 1, wherein, The valve hall, the DC field, the valve hall DC through-wall sleeve and the support system of the converter station valve hall DC through-wall sleeve as claimed in any one of claims 1-9.

10. A converter station, characterized by The valve hall DC through-wall sleeve connects the valve hall and the DC field, and the support system of the converter station valve hall DC through-wall sleeve is used to support the valve hall DC through-wall sleeve. ​ ​

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