Pull plate connecting structure of converter transformer

Abstract

The utility model discloses a converter transformer pulling plate connecting structure which comprises a copper bar bracket which is of an L-shaped structure, a pulling plate is arranged at one end of the copper bar bracket, a connecting copper bar is arranged at the other end of the copper bar bracket, and the connecting copper bar is connected with an aluminum cushion block through an adjusting assembly. The aluminum cushion block is provided with a groove, the adjusting assembly comprises a first adjusting piece and a second adjusting piece, one end of the first adjusting piece and one end of the second adjusting piece are installed in the groove, and the other end of the first adjusting piece and the other end of the second adjusting piece extend out of the groove. The connecting copper bar is installed between the first adjusting piece and the second adjusting piece and is fixed through the fastening piece. The structure not only provides good mechanical support, but also is favorable for dissipating heat generated at the joint due to good heat-conducting property, so that the working temperature of the equipment is reduced, the reliability of the equipment is improved, the service life of the equipment is prolonged, and the loss is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of large-capacity transformer technology, specifically relating to a converter transformer pull plate connection structure. Background Technology

[0002] With the development of the power industry, improving the performance of power equipment and ensuring the reliable operation of the power system are urgent problems that need to be solved in power production. Among power equipment, large-capacity transformers are a crucial type of equipment, and their normal operation directly affects the quality of the power supply system. Therefore, ensuring the normal operation of large-capacity transformers and improving the utilization rate of electricity is a research direction for power industry workers and is also of great significance to the sustainable development of enterprises.

[0003] As voltage increases, the load current of a large-capacity transformer increases, and the resulting leakage magnetic field also intensifies. This leads to significant additional losses in the internal metal components of the transformer, causing localized overheating and increased temperature rise. While copper shielding is typically installed on the high-voltage side of large-capacity transformers to reduce losses, this method is insufficient for high-voltage, high-capacity transformers. Furthermore, the connection between the copper busbar and the aluminum pad is extremely unstable during loss reduction, easily causing the copper busbar to detach from the aluminum pad, thus affecting the effectiveness of loss reduction. Utility Model Content

[0004] The purpose of this utility model is to provide a converter transformer pull plate connection structure to solve the technical defects in the prior art. In the prior art, copper shielding is usually set on the high-voltage side of large-capacity transformers to reduce losses. However, for high-voltage and high-capacity transformers, simply setting copper shielding on the high-voltage side is a weak way to reduce losses. In addition, in the process of reducing losses, the connection between the connecting copper busbar and the aluminum pad is extremely unstable, which can easily cause the connecting copper busbar to fall off the aluminum pad, affecting the loss reduction effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A converter transformer pull-plate connection structure includes:

[0007] The copper busbar bracket has an L-shaped structure, with a pull plate at one end and a connecting copper busbar at the other end. The connecting copper busbar is connected to the aluminum pad block through an adjustment component.

[0008] The aluminum pad has a slot, and the adjustment assembly includes a first adjustment member and a second adjustment member. One end of the first adjustment member and the second adjustment member are installed in the slot, and the other end extends to the outside of the slot.

[0009] The connecting copper bar is arranged between the first adjusting member and the second adjusting member and is fixed by a fastener.

[0010] Further, the first adjusting member and the second adjusting member are each provided with a mounting hole, and the fastener is arranged in the mounting hole.

[0011] Further, the fastener is a bolt.

[0012] Further, the thickness of the first adjusting member is 4mm-6mm.

[0013] Further, the thickness of the second adjusting member is 1mm-3mm.

[0014] Further, the pull plate comprises a first side column pull plate, a first center column pull plate, a second center column pull plate and a second side column pull plate.

[0015] The connecting copper bar comprises a first side column upper copper bar, a first center column upper copper bar, a second side column upper copper bar, a first side column lower copper bar, a first center column lower copper bar and a second side column lower copper bar.

[0016] One end of the first side column pull plate and the first center column pull plate is connected by the first side column upper copper bar, and the other end is connected by the first side column lower copper bar.

[0017] One end of the first center column pull plate and the second center column pull plate is connected by the first center column upper copper bar, and the other end is connected by the first center column lower copper bar.

[0018] One end of the second center column pull plate and the first side column lower copper bar is connected by the second side column upper copper bar, and the other end is connected by the second side column lower copper bar.

[0019] The first side column pull plate, the first center column pull plate, the second center column pull plate and the second side column pull plate are each provided with a copper bar bracket.

[0020] Further, the first center column pull plate is provided with a plurality of first center column pull plates, and the plurality of first center column pull plates are arranged in sequence and at intervals.

[0021] Further, the second center column pull plate is also provided with a plurality of first center column pull plates, and the plurality of first center column pull plates are arranged in sequence and at intervals.

[0022] Further, the copper bar bracket comprises a first copper bar bracket and a second copper bar bracket, the first copper bar bracket is arranged at the end of the first side column pull plate and the second side column pull plate, and the second copper bar bracket is arranged at the end of the first center column pull plate and the second center column pull plate.

[0023] Further, the first side column pull plate and the second side column pull plate, the number of the first copper bar bracket installed is two, the first heart column pull plate and the second heart column pull plate, the number of the second copper bar bracket installed is multiple.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. By installing the pull plate and the connecting copper bar on the copper bar bracket of the L-shaped structure, not only the stability of the whole structure is enhanced, but also the reliability and safety of current transmission are ensured.

[0026] 2. The installation hole is arranged, thereby ensuring the stable connection between the connecting copper bar and the aluminum pad, and by adjusting the position of the fastener in the installation hole, the fine adjustment of the connecting copper bar can be realized to meet the precise assembly requirement.

[0027] 3. The bolt and the nut are matched to fasten the connecting copper bar, thereby ensuring the stability and reliability of the connecting copper bar during the operation of the transformer. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The side view of the lower pull plate, the copper bar bracket and the lower connecting copper bar in the converter transformer pull plate connecting structure provided by the utility model;

[0029] Figure 2 The structure schematic view of the pull plate, the copper bar bracket and the connecting copper bar in the converter transformer pull plate connecting structure provided by the utility model;

[0030] Figure 3 The plan view of the copper bar bracket and the upper connecting copper bar in the converter transformer pull plate connecting structure provided by the utility model;

[0031] Figure 4 The plan view of the copper bar bracket and the lower connecting copper bar in the converter transformer pull plate connecting structure provided by the utility model;

[0032] Figure 5 The structure schematic view of the connecting copper bar and the aluminum pad in the converter transformer pull plate connecting structure provided by the utility model method;

[0033] Wherein: 1, pull plate; 101, first side column pull plate; 102, first heart column pull plate; 103, second heart column pull plate; 104, second side column pull plate; 2, connecting copper bar; 201, first side column upper copper bar; 202, first heart column upper copper bar; 203, second side column upper copper bar; 204, first side column lower copper bar; 205, first heart column lower copper bar; 206, second side column lower copper bar; 3, copper bar bracket; 301, first copper bar bracket; 302, second copper bar bracket; 4, adjusting assembly; 401, first adjusting piece; 402, second adjusting piece; 5, aluminum pad; 6, connecting piece. DETAILED DESCRIPTION

[0034] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0036] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] With the development of the power industry, improving the performance of power equipment and ensuring the reliable operation of the power system are urgent problems that need to be solved in power production. Among power equipment, large-capacity transformers are a crucial type of equipment, and their normal operation directly affects the quality of the power supply system. Therefore, ensuring the normal operation of large-capacity transformers and improving the utilization rate of electricity is a research direction for power industry workers and is also of great significance to the sustainable development of enterprises.

[0040] As voltage increases, the load current of a large-capacity transformer increases, and the resulting leakage magnetic field also intensifies. This leads to significant additional losses in the internal metal components of the transformer, causing localized overheating and increased temperature rise. While copper shielding is typically installed on the high-voltage side of large-capacity transformers to reduce losses, this method is insufficient for high-voltage, high-capacity transformers. Furthermore, the connection between the copper busbar and the aluminum pad is extremely unstable during loss reduction, easily causing the copper busbar to detach from the aluminum pad, thus affecting the effectiveness of loss reduction.

[0041] In order to overcome the above-mentioned technical defects, the inventors have provided a converter transformer pull plate connection structure.

[0042] The present invention will now be described in further detail with reference to the accompanying drawings:

[0043] like Figures 1-5 As shown in the embodiment of this utility model, a converter transformer pull plate connection structure is provided, including: a copper busbar bracket 3, which is an L-shaped structure, with a pull plate 1 at one end via a connector 6 (which can be a screw), and a connecting copper busbar 2 at the other end. The connecting copper busbar 2 is connected to an aluminum pad 5 via an adjusting component 4. The aluminum pad 5 has a slot, and the adjusting component 4 includes a first adjusting component 401 and a second adjusting component 402. One end of the first adjusting component 401 and the second adjusting component 402 is installed in the slot, and the other end extends outside the slot. The connecting copper busbar 2 is installed between the first adjusting component 401 and the second adjusting component 402 and fixed by fasteners. By installing the pull plate 1 and the connecting copper busbar 2 on the L-shaped copper busbar bracket 3, not only is the overall stability of the structure enhanced, but the reliability and safety of current transmission are also ensured. The adjusting component 4 makes the connection between the connecting copper busbar 2 and the aluminum pad 5 more secure, which is crucial for reducing resistance and energy consumption. Simultaneously, the secure connection ensures efficient and stable current transmission. Finally, the aluminum pad 5 not only provides good mechanical support, but also, due to its excellent thermal conductivity, helps dissipate heat generated at the connection point, thereby reducing the operating temperature of the equipment and improving its reliability and service life. Figure 5As shown, mounting holes are formed on the first adjusting member 401 and the second adjusting member 402, and fasteners are arranged in the mounting holes; specifically, the fasteners are preferably bolts. The arrangement of the mounting holes ensures the stable connection between the connecting copper bars 2 and the aluminum pads 5, and by adjusting the positions of the fasteners in the mounting holes, the fine adjustment of the connecting copper bars 2 can be realized to meet the precise assembly requirements; secondly, the bolts cooperate with nuts to fasten the connecting copper bars 2, ensuring the stability and reliability of the connecting copper bars 2 during the operation of the transformer. Figure 5 As shown, the thickness of the first adjusting member 401 is 4mm-6mm, which can withstand greater mechanical stress and vibration; the thickness of the second adjusting member 402 is 1mm-3mm.

[0044] As shown, Figures 3-5 As shown, the pull plate 1 includes a first side column pull plate 101, a first center column pull plate 102, a second center column pull plate 103, and a second side column pull plate 104; the connecting copper bars 2 include a first side column upper copper bar 201, a first center column upper copper bar 202, a second side column upper copper bar 203, a first side column lower copper bar 204, a first center column lower copper bar 205, and a second side column lower copper bar 206; one end of the first side column pull plate 101 and the first center column pull plate 102 is connected through the first side column upper copper bar 201, and the other end is connected through the first side column lower copper bar 204; one end of the first center column pull plate 102 and the second center column pull plate 103 is connected through the first center column upper copper bar 202, and the other end is connected through the first center column lower copper bar 205; one end of the second center column pull plate 103 and the first side column lower copper bar 204 is connected through the second side column upper copper bar 203, and the other end is connected through the second side column lower copper bar 206; the first side column pull plate 101, the first center column pull plate 102, the second center column pull plate 103, and the second side column pull plate 104 are all provided with copper bar holders 3. By connecting different pull plates 1 through multiple copper bar holders 3, the current can be more evenly distributed inside the transformer, avoiding local overheating and current concentration, and the subdivision design of the pull plate 1 and the copper bar holder 3 makes the entire structure more firm, enhancing the mechanical strength of the transformer and enabling it to withstand greater mechanical stress and vibration. Further, the first center column pull plate 102 is provided with three, which are sequentially and spacedly arranged, and the second center column pull plate 103 is also provided with three, which are sequentially and spacedly arranged; the copper bar holder 3 includes a first copper bar holder 301 and a second copper bar holder 302, the first copper bar holder 301 is arranged at the end of the first side column pull plate 101 and the second side column pull plate 104, and the second copper bar holder 302 is arranged at the end of the first center column pull plate 102 and the second center column pull plate 103; specifically, the number of the first copper bar holders 301 installed on the first side column pull plate 101 and the second side column pull plate 104 is two, and the number of the second copper bar holders 302 installed on the first center column pull plate 102 and the second center column pull plate 103 is three.

[0045] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit the protection scope thereof, although the utility model has been described in detail with reference to the above examples, those skilled in the art should understand that: the skilled person in the art can still make various changes, modifications or equivalent replacements to the specific embodiments of the utility model after reading the utility model, but these changes, modifications or equivalent replacements are all within the protection scope of the utility model to be approved.

Claims

1. A converter transformer pull-plate connection structure, characterized in that, The application relates to a copper bar bracket (3) which is L-shaped in structure, has a pull plate (1) at one end and a connecting copper bar (2) at the other end, and is connected with an aluminum cushion block (5) through an adjusting assembly (4). The aluminum cushion block (5) is provided with a slot, the adjusting assembly (4) comprises a first adjusting piece (401) and a second adjusting piece (402), one end of the first adjusting piece (401) and the second adjusting piece (402) is installed in the slot, and the other end extends to the outside of the slot. The connecting copper bar (2) is installed between the first adjusting piece (401) and the second adjusting piece (402) and is fixed through a fastener. The first adjusting piece (401) and the second adjusting piece (402) are both provided with mounting holes, and the fastener is arranged in the mounting holes.

2. The converter transformer tie plate connection structure according to claim 1, characterized in that The fastener is a bolt.

3. The converter transformer tie plate connection structure according to claim 2, characterized in that The thickness of the first adjusting piece (401) is 4mm-6mm.

4. The converter transformer lap joint structure according to claim 1 or 2, characterized in that The thickness of the second adjusting piece (402) is 1mm-3mm.

5. The converter transformer lap joint structure according to claim 1 or 2, characterized by The pull plate (1) comprises a first side column pull plate (101), a first central column pull plate (102), a second central column pull plate (103) and a second side column pull plate (104).

6. The converter transformer lap joint structure according to claim 1, characterized in that The connecting copper bar (2) comprises a first side column upper copper bar (201), a first central column upper copper bar (202), a second side column upper copper bar (203), a first side column lower copper bar (204), a first central column lower copper bar (205) and a second side column lower copper bar (206). One end of the first side column pull plate (101) and the first central column pull plate (102) is connected through the first side column upper copper bar (201), and the other end is connected through the first side column lower copper bar (204). One end of the first central column pull plate (102) and the second central column pull plate (103) is connected through the first central column upper copper bar (202), and the other end is connected through the first central column lower copper bar (205). One end of the second central column pull plate (103) and the first side column lower copper bar (204) is connected through the second side column upper copper bar (203), and the other end is connected through the second side column lower copper bar (206). The first side column pull plate (101), the first central column pull plate (102), the second central column pull plate (103) and the second side column pull plate (104) are all provided with the copper bar bracket (3). The first central column pull plate (102) is provided with a plurality of first central column pull plates (102) which are sequentially and spacedly arranged.

7. The converter transformer tie plate connection structure according to claim 6, characterized in that The second central column pull plate (103) is also provided with a plurality of first central column pull plates (102) which are sequentially and spacedly arranged.

8. The converter transformer tie plate connection structure according to claim 6, characterized in that The copper bar bracket (3) comprises a first copper bar bracket (301) and a second copper bar bracket (302), the first copper bar bracket (301) is arranged at the end of the first side column pull plate (101) and the second side column pull plate (104), and the second copper bar bracket (302) is arranged at the end of the first central column pull plate (102) and the second central column pull plate (103).

9. The converter transformer lap joint structure according to claim 6, characterized in that ​ 10. The converter transformer tie plate connection structure according to claim 9, characterized in that The first side column pull plate (101) and the second side column pull plate (104) are provided with two first copper bar brackets (301), and the first center column pull plate (102) and the second center column pull plate (103) are provided with a plurality of second copper bar brackets (302).

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