Transformer bushing flange seismic reinforcement method and transformer bushing flange

Abstract

The present application relates to a method for seismic reinforcement of a transformer bushing flange and a transformer bushing flange. The reinforcement method comprises the following steps: a reinforcement shell is set on the outside of the flange sleeve and connected between the flange bottom plate and the flange top plate; a connecting clip is set on the hanging ear so that the hanging ear and the connecting clip form a limit, and the connecting clip is connected to the reinforcement shell. In terms of the force mechanism, the present method can change the load-bearing mode of the flange body, transfer the high stress area to the reinforcement shell, and the reinforcement shell is axially stressed, thereby greatly reducing the stress level of the flange sleeve, the flange bottom plate and the hanging ear; at the same time, the reinforcement shell is conducive to improving the overall bending stiffness of the transformer bushing flange, reducing the seismic response, and advantageously ensuring the safety of the flange body and the transformer bushing flange. No power outage is required for construction, which is conducive to ensuring the stability of power transmission. At the same time, it can significantly improve the safety performance of the flange body, thereby ensuring the normal operation of the entire transformer bushing flange and the transformer.

Description

Technical Field

[0001] The present application relates to the technical field of earthquake resistance of ultra-high voltage electrical equipment, and in particular to a method for earthquake resistance reinforcement of a transformer bushing flange and a transformer bushing flange. Background Art

[0002] In previous earthquakes, substation equipment suffered various types of damage. Transformers typically experience a variety of failure modes, including overall housing overturning, oil leakage, breaking of the top bushing conductor, fracture of the porcelain sleeve at the base of the bushing, and flange damage. Damage to substation equipment can impact power transmission and post-earthquake rescue efforts, severely impacting normal electricity consumption for residents, businesses, and agriculture. Most transformer bushing flanges damaged by previous earthquakes were reinforced with stiffening ribs, with the primary form of damage being root-breakage. However, in some earthquakes, some flanges fractured and leaked oil. Damage affected the mounting lugs, sleeves, and baseplates. In cases of flange damage, the lugs were the first to damage the bushings, which in turn caused cracks in other areas, leading to oil leakage.

[0003] Flanges are widely used in transformers at substations. Replacing these flanges entails significant time and financial costs. Furthermore, the resulting power outages can have significant impacts on society, residents, businesses, and enterprises. Therefore, it is crucial to implement in-situ reinforcement and retrofit measures for these flanges without power outages. Summary of the Invention

[0004] Based on this, it is necessary to provide a transformer bushing flange seismic reinforcement method and a transformer bushing flange to address the above problems, which can realize in-situ construction operations without power outages, prevent such flanges from being damaged in earthquakes, and then cause oil leakage and other faults, affecting the normal operation of the transformer.

[0005] A method for seismic reinforcement of a transformer bushing flange, comprising the following steps:

[0006] The reinforcement shell is placed outside the flange sleeve and connected between the flange bottom plate and the flange top plate;

[0007] The connecting clip sleeve is arranged on the hanging ear so that the hanging ear and the connecting clip form a limit, and the connecting clip is connected to the reinforcement shell.

[0008] The above-mentioned transformer bushing flange anti-seismic reinforcement method can be directly modified and reinforced on the original flange body during the installation process. In terms of the stress mechanism, this method can change the load-bearing mode of the flange body and transfer the high-stress area to the reinforced shell. The reinforced shell is axially stressed, thereby greatly reducing the stress level of the flange sleeve, flange base plate and lug. At the same time, the reinforced shell is conducive to improving the overall bending stiffness of the transformer bushing flange, reducing the seismic response, and advantageously ensuring the safety of the flange body and the transformer bushing flange. In terms of construction operation, the construction steps of this method are extremely simple. The reinforced shell is prefabricated and only drilling and welding operations are required on site, as well as general construction operations such as bolt connection. No power outage is required for construction, which is conducive to ensuring the stability of power transmission. At the same time, it can significantly improve the safety performance of the flange body, thereby ensuring the normal operation of the entire transformer bushing flange and transformer.

[0009] The technical solution is further described below:

[0010] In one embodiment, the step of sleeve-mounting the reinforcement shell outside the flange sleeve and connecting it between the flange bottom plate and the flange top plate, wherein the opposite ends of the reinforcement shell are respectively connected to the flange bottom plate and the flange top plate, specifically includes the following steps:

[0011] The reinforcement shell is arranged outside the flange sleeve;

[0012] Connecting one end of the reinforcement shell close to the flange top plate to the flange top plate through bolts;

[0013] One end of the reinforcement shell close to the flange bottom plate is welded to the flange bottom plate.

[0014] In one embodiment, the step of arranging the connecting clip sleeve on the hanging ear so that the hanging ear and the connecting clip form a limit, and the connecting clip is connected to the reinforced shell, specifically includes the following steps:

[0015] The connecting clip is arranged on the hanging ear so that the hanging ear and the connecting clip form a limit;

[0016] The connecting clip is connected to the reinforcement shell bolts.

[0017] The present application also provides a transformer bushing flange, which is manufactured using the above-mentioned transformer bushing flange seismic reinforcement method. The transformer bushing flange includes: a flange body, a reinforcement shell and a connecting clip. The flange body includes a flange sleeve, a flange bottom plate, a flange top plate and a hanging ear. The flange bottom plate and the flange top plate are respectively arranged at the two ends of the flange sleeve. The hanging ear is arranged on the outer wall of the flange sleeve and is located between the flange bottom plate and the flange top plate. The reinforcement shell is sleeved outside the flange sleeve and connected between the flange bottom plate and the flange top plate. The connecting clip is limitedly matched with the hanging ear, and the connecting clip is connected to the reinforcement shell.

[0018] The transformer bushing flange described above can change the load-bearing mode of the flange body in terms of its load-bearing mechanism, transferring high-stress areas to the reinforced shell. The reinforced shell then bears axial load, thereby significantly reducing the stress levels of the flange sleeve, flange base plate, and lugs. At the same time, the reinforced shell helps improve the overall bending stiffness of the transformer bushing flange, reduces seismic response, and advantageously ensures the safety of the flange body and the transformer bushing flange. In terms of construction operations, the construction steps of this method are extremely simple. The reinforced shell is prefabricated, and only drilling and welding operations, as well as general construction operations such as bolting, are required on-site. No power outage is required for construction, which helps ensure the stability of power transmission. It can also significantly improve the safety performance of the flange body, thereby ensuring the normal operation of the entire transformer bushing flange and transformer.

[0019] In one embodiment, there are at least two hanging ears, and at least two of the hanging ears are arranged at intervals along the circumference of the flange sleeve. The reinforced shell includes at least two shells, and the number of the shells is the same as the number of the hanging ears. A shell is provided between two adjacent hanging ears, and the two adjacent shells are connected by the connecting clip.

[0020] In one embodiment, the transformer bushing flange further includes a first connecting piece, the flange top plate is provided with a first mounting hole, and the reinforcement shell is connected to the flange top plate by the first connecting piece and through the first mounting hole.

[0021] In one embodiment, the reinforcement shell is welded to the flange bottom plate near an outer edge of the flange bottom plate.

[0022] In one embodiment, the connecting clip includes a first connecting plate, a second connecting plate and a limiting body, the limiting body is provided with a limiting groove, the first connecting plate and the second connecting plate are respectively connected to the opposite sides of the limiting groove, the limiting body is sleeved on the outside of the hanging ear through the limiting groove, so that the hanging ear is limitedly matched with the groove wall of the limiting groove, and the first connecting plate and the second connecting plate are respectively connected to the reinforcement shell.

[0023] In one embodiment, the transformer bushing flange further includes a second connecting member, the first connecting plate and / or the second connecting plate are provided with a second mounting hole, and the first connecting plate and / or the second connecting plate are connected to the reinforced shell via the corresponding second mounting hole using the second connecting member.

[0024] In one embodiment, there are more than two first mounting holes, and the two or more first mounting holes are spaced apart on the flange top plate; and / or, there are more than two second mounting holes, and the first connecting plate and / or the second connecting plate are respectively provided with at least two second mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only for illustrative purposes and are not necessarily drawn to true scale.

[0028] Figure 1 This is a flow chart of a method for seismic reinforcement of a transformer bushing flange according to one embodiment of the present application.

[0029] Figure 2 Schematic diagram of the overall structure of the transformer bushing flange described in one embodiment of the present application.

[0030] Figure 3 for Figure 2 Schematic diagram of the structure of the flange body described in.

[0031] Figure 4 for Figure 2 Schematic diagram of the structure of the transformer bushing flange from another perspective.

[0032] Figure 5 for Figure 2 Schematic diagram of the structure of the reinforced shell described in .

[0033] Description of reference numerals:

[0034] 100. Transformer bushing flange; 110. Flange body; 111. Flange sleeve; 112. Flange top plate; 113. Flange bottom plate; 114. Mounting ear; 120. Reinforcement shell; 121. Shell; 130. Connecting clamp; 131. First connecting plate; 132. Second connecting plate; 133. Limiting body; 140. First connecting member; 150. Second connecting member. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] See also Figure 1 、 Figure 2 and Figure 3 , Figure 1 A flow chart of a transformer bushing flange seismic reinforcement method according to an embodiment of the present application is shown. Figure 2 A schematic diagram of the overall structure of a transformer bushing flange 100 described in an embodiment of the present application is shown. Figure 3 Shown Figure 2 Schematic diagram of the structure of the flange body 110 in FIG. An embodiment of the present application provides a method for seismic reinforcement of a transformer bushing flange, comprising the following steps:

[0037] S100: The reinforcement shell 120 is sleeved on the outside of the flange sleeve 111 and connected between the flange bottom plate 113 and the flange top plate 112;

[0038] S200 : The connecting clip 130 is sleeved on the hanging ear 114 , so that the hanging ear 114 and the connecting clip 130 form a limit, and the connecting clip 130 is connected to the reinforcement shell 120 .

[0039] The above-mentioned transformer bushing flange seismic reinforcement method can be directly modified and reinforced on the original flange body 110 during installation. In terms of the load-bearing mechanism, this method can change the load-bearing mode of the flange body 110, transferring the high-stress area to the reinforcement shell 120. The reinforcement shell 120 then bears the axial force, thereby greatly reducing the stress levels of the flange sleeve 111, flange base plate 113, and lug 114. At the same time, the reinforcement shell 120 helps to improve the overall bending stiffness of the transformer bushing flange 100, reduce seismic response, and effectively ensure the safety of the flange body 110 and the transformer bushing flange 100. In terms of construction operation, the construction steps of this method are extremely simple. The reinforcement shell 120 is prefabricated, and only drilling and welding operations, as well as general construction operations such as bolting, are required on site. No power outage is required for construction, which helps to ensure the stability of power transmission. At the same time, it can significantly improve the safety performance of the flange body 110, thereby ensuring the normal operation of the entire transformer bushing flange 100 and the transformer.

[0040] It should be noted that if Figure 3 As shown, the flange body 110 includes a flange sleeve 111, a flange bottom plate 113, a flange top plate 112, and a hanging ear 114. The flange bottom plate 113 and the flange top plate 112 are respectively connected to opposite ends of the flange body 110, and the hanging ear 114 is provided on the outer wall of the flange sleeve 111 and between the flange bottom plate 113 and the flange top plate 112.

[0041] It should be noted that, after the flange body 110 is reinforced by the above-mentioned method, it forms the transformer bushing flange described below.

[0042] Optionally, the reinforcement shell 120 may be connected to the flange bottom plate 113 and the flange top plate 112 respectively by bonding, welding, bolting, threading, snap-fitting, magnetic connection or other connection methods.

[0043] In one embodiment, see Figure 1 Step: S100: The reinforcement shell 120 is placed outside the flange sleeve 111 and connected between the flange bottom plate 113 and the flange top plate 112, specifically including the following steps:

[0044] S110: Sleeve the reinforcement shell 120 onto the flange sleeve 111;

[0045] S120: Connect one end of the reinforcement shell 120 close to the flange top plate 112 to the flange top plate 112 with bolts;

[0046] S130 : Welding one end of the reinforcement shell 120 close to the flange bottom plate 113 to the flange bottom plate 113 .

[0047] In this way, through the above steps, using bolt connection and welding methods respectively, it is beneficial to simplify the construction process while improving the connection stability, without the need for power outage construction, and it is beneficial to improve the safety performance of the flange body 110 and improve the operating stability of power equipment such as transformers.

[0048] In one embodiment, see Figure 1 Step S200: Sleeve the connecting clip 130 onto the hanging ear 114 so that the hanging ear 114 and the connecting clip 130 form a limit, and the connecting clip 130 is connected to the reinforcement shell 120, specifically including the following steps:

[0049] S210: Sleeve the connecting clip 130 onto the hanging ear 114 so that the hanging ear 114 and the connecting clip 130 form a limit position;

[0050] S220 : The connecting clip 130 is connected to the reinforcement shell 120 with bolts.

[0051] In this way, connecting the connecting clip 130 to the reinforcement shell 120 by bolt connection is conducive to ensuring the connection stability, thereby facilitating the stress dispersion, and is easy to operate without the need for power outage construction, which is conducive to ensuring the stability of power transmission.

[0052] During the simulation calculation, the connection between the reinforcement shell 120 and the flange top plate 112 and the bottom plate is simulated by Tie connection (in practice, similar connection methods to those in this application can be used, such as epoxy resin connection, welding, etc.). The calculated seismic motion is the three-directional seismic motion measured by the near-point station. The seismic intensity is the same as the actual seismic motion, and the main earthquake direction is the short side direction of the transformer. After the calculation, the Mises stress peak of the flange body 110 is extracted, and the results are shown in Table 1. As can be seen from Table 1, after adopting the present invention, whether it is the flange top plate 112, flange sleeve 111, flange bottom plate 113 or lifting lug 114 in the flange body 110, the stress is significantly reduced, especially the stress of the key parts of the flange body 110 (flange sleeve 111 and flange bottom plate 113) that are prone to cracking is reduced by an order of magnitude. Therefore, the use of the present invention can effectively protect the safety performance of the flange body 110 under earthquakes and prevent the flange body 110 from being damaged.

[0053] Table 1

[0054] Stress / MPa Middle part of flange sleeve Flange sleeve bottom Flange base plate Mounting ears Original flange body 139.68 136.15 46.91 119.39 This application flange body 9.53 9.98 7.08 50.65

[0055] In one embodiment, see Figure 2 、 Figure 3 and Figure 4 , Figure 4 Shown Figure 2Schematic diagram of the structure of the transformer bushing flange 100 from another perspective. The present application also provides a transformer bushing flange 100, which is manufactured using the above-mentioned method for seismic reinforcement of the transformer bushing flange 100. The transformer bushing flange 100 includes: a flange body 110, a reinforcement shell 120 and a connecting clip 130. The flange body 110 includes a flange sleeve 111, a flange bottom plate 113, a flange top plate 112 and a hanging ear 114. The flange bottom plate 113 and the flange top plate 112 are respectively arranged at both ends of the flange sleeve 111, and the hanging ear 114 is arranged on the outer wall of the flange sleeve 111 and is located between the flange bottom plate 113 and the flange top plate 112. The reinforcement shell 120 is sleeved on the outside of the flange sleeve 111 and connected between the flange bottom plate 113 and the flange top plate 112. The connecting clip 130 is limitedly engaged with the hanging ear 114, and the connecting clip 130 is connected to the reinforcement shell 120.

[0056] The transformer bushing flange 100 described above can change the load-bearing mode of the flange body 110 in terms of its load-bearing mechanism, transferring the high-stress area to the reinforcement shell 120. The reinforcement shell 120 then bears the axial force, thereby greatly reducing the stress levels of the flange sleeve 111, flange base plate 113, and lug 114. Simultaneously, the reinforcement shell 120 helps to improve the overall bending stiffness of the transformer bushing flange 100, reduces seismic response, and advantageously ensures the safety of the flange body 110 and the transformer bushing flange 100. In terms of construction operations, the construction steps of this method are extremely simple. The reinforcement shell 120 is prefabricated, and only drilling and welding operations, as well as general construction operations such as bolting, are required on-site. No power outage is required for construction, which helps ensure the stability of power transmission. It can also significantly improve the safety performance of the flange body 110, thereby ensuring the normal operation of the entire transformer bushing flange 100 and the transformer.

[0057] Optionally, the reinforcement shell 120 may be an integral structure or a split structure.

[0058] In this embodiment, the flange sleeve 111 is a circular cylindrical structure, and the reinforcement shell 120 is an annular structure. The outer diameter of the reinforcement shell 120 is the same as the outer diameter of the flange top plate 112, or the outer diameter of the reinforcement shell 120 is slightly smaller than the outer diameter of the flange top plate.

[0059] In one embodiment, see Figure 5 , Figure 5 Shown Figure 2 Schematic diagram of the structure of the reinforcement shell 120. Figure 2 and Figure 5As shown, there are at least two lugs 114, and the at least two lugs 114 are spaced apart along the circumference of the flange sleeve 111. The reinforcement shell 120 includes at least two shells 121, and the number of shells 121 is the same as the number of lugs 114. A shell 121 is provided between two adjacent lugs 114, and the two adjacent shells 121 are connected by a connecting clip 130.

[0060] Specifically, see Figure 2 There are two mounting lugs 114 and two housings 121, and the two mounting lugs 114 are evenly spaced on the outer wall of the flange cylinder. In this way, the two housings 121 are connected by two connecting clips 130, which is simple to install and does not require downtime, which is conducive to improving the efficiency of modification and reinforcement, and does not affect the normal operation of the transformer.

[0061] In one embodiment, see Figure 2 The transformer bushing flange 100 further includes a first connector 140. The flange top plate 112 is provided with a first mounting hole, and the reinforcement shell 120 is connected to the flange top plate 112 by the first connector 140 and through the first mounting hole.

[0062] Optionally, the first connecting member 140 may be a bolt or a screw. This makes construction simple, provides strong connection stability, and is conducive to ensuring the reinforcement effect. It is also convenient to assemble and disassemble, which is conducive to improving maintenance convenience.

[0063] In one embodiment, see Figure 2 An outer edge of the reinforcement shell 120 close to the flange bottom plate 113 is welded to the flange bottom plate 113 .

[0064] In other embodiments, the flange top plate 112 may be connected to the reinforcement shell 120 by bonding, welding, riveting, threading, snap-fitting, magnetic connection, or other connection methods. The flange bottom plate 113 may also be connected to the reinforcement shell 120 by bonding, bolting, riveting, threading, snap-fitting, magnetic connection, or other connection methods.

[0065] In one embodiment, see Figure 2The connecting clamp 130 includes a first connecting plate 131, a second connecting plate 132 and a limiting body 133. The limiting body 133 is provided with a limiting groove, a first connecting plate 131 and a second connecting plate 132. The limiting body 133 is sleeved on the outside of the hanging ear 114 through the limiting groove, so that the hanging ear 114 is limitedly matched with the groove wall of the limiting groove. The first connecting plate 131 and the second connecting plate 132 are respectively connected to the reinforcement shell 120. Because the hanging ear 114 part will generate great stress in the seismic analysis, it is the weak part of the entire flange body 110. During the earthquake, the casing of the substation with flange damage is first damaged by the hanging ear 114, which then causes cracks in other parts, resulting in oil leakage. The connecting clamp 130 with such a structure can ensure that the connecting clamp 130 is compact in structure, reduce the stress of the hanging ear 114 during an earthquake, and improve the reinforcement effect of the hanging ear 114.

[0066] Optionally, the connection between the connecting clip 130 and the housing 121 may be bonding, bolting, welding, riveting, threading, snap-fitting, magnetic connection or other connection methods.

[0067] In one embodiment, see Figures 2 to 4 The transformer bushing flange 100 further includes a second connector 150. The first connecting plate 131 and / or the second connecting plate 132 are provided with second mounting holes, and the first connecting plate 131 and / or the second connecting plate 132 are connected to the reinforcement shell 120 through the corresponding second mounting holes using the second connector 150.

[0068] Optionally, the second connecting member 150 can be a bolt or screw. This facilitates the installation of the connecting clamp 130, thereby dispersing stress and improving the safety of the flange body and the transformer bushing flange during earthquakes, thereby preventing damage to both. Bolted connections are also convenient and help improve construction efficiency.

[0069] It should be noted that this embodiment only provides a specific connection method between the connecting clip 130 and the reinforcement shell 120, but is not limited thereto.

[0070] Further, see Figures 2 to 4 There are more than two first mounting holes 1121, and the more than two first mounting holes 1121 are spaced apart on the flange top plate 112. This is beneficial to further improve the connection stability between the reinforcement shell 120 and the flange top plate 112 and improve the reinforcement effect.

[0071] In one embodiment, see Figures 2 to 4There are at least two second mounting holes 134, and the first connecting plate 131 and / or the second connecting plate 132 each have at least two second mounting holes 134. For example, the first connecting plate 131 has two second mounting holes 134. The second connecting plate 132 also has two second mounting holes 134. This helps improve the connection stability between the first connecting plate 131 and the second connecting plate 132 and the two adjacent housings 121, thereby further enhancing the reinforcement effect of the flange body 110.

[0072] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0073] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0074] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0075] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0076] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0077] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A transformer bushing flange, characterized in that: The transformer bushing flange includes: a flange body, a reinforcement shell and a connecting clip, the flange body includes a flange sleeve, a flange bottom plate, a flange top plate and a hanging ear, the flange bottom plate and the flange top plate are respectively arranged at two ends of the flange sleeve, the hanging ear is arranged on the outer wall of the flange sleeve and is located between the flange bottom plate and the flange top plate, the reinforcement shell is sleeved outside the flange sleeve and connected between the flange bottom plate and the flange top plate, the connecting clip is limitedly matched with the hanging ear, and the connecting clip is connected to the reinforcement shell; the connecting clip includes a first connecting plate, a second connecting plate and a limiting body, the limiting body is provided with a limiting groove, the first connecting plate and the second connecting plate are respectively connected to opposite sides of the limiting groove, the limiting body is sleeved outside the hanging ear through the limiting groove, so that the hanging ear is limitedly matched with the groove wall of the limiting groove, and the first connecting plate and the second connecting plate are respectively connected to the reinforcement shell.

2. The transformer bushing flange according to claim 1, characterized in that: There are at least two hanging ears, and at least two of the hanging ears are spaced apart along the circumference of the flange sleeve. The reinforced shell includes at least two shells, and the number of the shells is the same as the number of the hanging ears. A shell is provided between two adjacent hanging ears, and the two adjacent shells are connected by the connecting clip.

3. The transformer bushing flange according to claim 1, characterized in that: The transformer bushing flange further includes a first connecting piece, a first mounting hole is formed on the flange top plate, and the reinforcement shell is connected to the flange top plate by the first connecting piece and through the first mounting hole.

4. The transformer bushing flange according to claim 1, characterized in that: The reinforcement shell is welded to the flange bottom plate at an outer edge thereof close to the flange bottom plate.

5. The transformer bushing flange according to claim 3, characterized in that: The transformer bushing flange further includes a second connecting piece, the first connecting plate and / or the second connecting plate are provided with a second mounting hole, and the first connecting plate and / or the second connecting plate are connected to the reinforced shell via the corresponding second mounting hole using the second connecting piece.

6. The transformer bushing flange according to claim 5, characterized in that: There are more than two first mounting holes, and the more than two first mounting holes are spaced apart on the flange top plate; And / or, there are more than two second mounting holes, and the first connecting plate and / or the second connecting plate are respectively provided with at least two second mounting holes.

7. A method for seismic reinforcement of transformer bushing flange, characterized in that: For the transformer bushing flange according to any one of claims 1 to 6, the transformer bushing flange seismic reinforcement method comprises the following steps: The reinforcement shell is placed outside the flange sleeve and connected between the flange bottom plate and the flange top plate; The connecting clip sleeve is arranged on the hanging ear so that the hanging ear and the connecting clip form a limit, and the connecting clip is connected to the reinforcement shell.

8. The method for seismic reinforcement of transformer bushing flange according to claim 7, characterized in that: Steps: The reinforcement shell is placed outside the flange sleeve and connected between the flange bottom plate and the flange top plate, specifically including the following steps: The reinforcement shell is arranged outside the flange sleeve; Connecting one end of the reinforcement shell close to the flange top plate to the flange top plate through bolts; One end of the reinforcement shell close to the flange bottom plate is welded to the flange bottom plate.

9. The method for seismic reinforcement of transformer bushing flange according to claim 7, characterized in that: Step: The step of arranging the connecting clip sleeve on the hanging ear so that the hanging ear and the connecting clip form a limit, and the connecting clip is connected to the reinforced shell, specifically includes the following steps: The connecting clip is arranged on the hanging ear so that the hanging ear and the connecting clip form a limit; The connecting clip is connected to the reinforcement shell bolts.

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