Conductive part connecting structure of transformer
By setting threaded holes at the second end of the inner core of the transformer to connect to the bolts, welding operations are avoided, and the impact of high temperature on the coil group during the welding process of high-frequency transformer is solved, equipment performance and safety are improved, and cost is reduced.
Patent Information
- Application Number
- CN202421029823.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-13
AI Technical Summary
High-frequency transformers generate high temperatures during welding connections, which affects the performance of the coil group and may lead to welding defects and degradation of equipment performance.
The second end of the transformer inner core is provided with a threaded hole and the second conductive connector are bolted to avoid welding operations, ensuring that the coil group passes through the inner core and is located between the conductive connectors, and reducing the impact of high temperature on the coil group.
It effectively avoids the adverse effects of high temperatures generated by welding on the coil group, reduces the probability of welding defects, improves equipment performance and operation safety, and reduces maintenance and production costs.
Smart Images
Figure CN222260758U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer equipment, in particular to a transformer conductive piece connection structure. Background Art
[0002] With the development of society, the country has vigorously called for energy conservation and emission reduction. High-frequency equipment is increasingly widely used in the market.
[0003] At present, the main connection method of high-frequency transformer conductive parts is welding connection. Among them, both ends of the transformer core of the transformer need to be welded with conductive connectors, and the high-frequency coil group is set outside the transformer core and located between the two conductive connectors.
[0004] The specific connection method is: a conductive connector is welded to the transformer core, the high-frequency coil group is passed through the transformer core from the end of the transformer core away from the conductive connector, and the other conductive connector passes through one end of the transformer core. After positioning, the second welding is performed. After completing the above connection, the secondary side assembly of the high-frequency transformer can be completed by detecting the high-frequency transformer parameters. Since the high-frequency coil group cannot be passed through the transformer core from the end of the transformer core connected to the conductive connector, the high-frequency coil group needs to be passed through the transformer core before the second welding.
[0005] However, high temperature will be generated during the second welding process, which will have an adverse effect on the high-frequency coil group and thus affect the performance of the transformer.
[0006] Therefore, how to ensure the performance of the transformer is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0007] In view of this, the utility model provides a transformer conductive member connection structure to ensure the performance of the transformer.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A transformer conductive member connection structure, comprising:
[0010] A transformer core, the transformer core having a first end and a second end, the second end having a threaded hole;
[0011] a first conductive connector, the first conductive connector being connectable to a first end of the transformer core;
[0012] a second conductive connector, the second conductive connector being connectable to the threaded hole by a bolt, so that the second conductive connector is connected to the second end of the transformer core, and the first conductive connector and the second conductive connector are connected to the transformer core in sequence;
[0013] A coil group is passed through the inner core of the transformer and is located between the first conductive connecting member and the second conductive connecting member.
[0014] Optionally, in the above transformer conductive component connection structure, the threaded hole is located on the end surface of the second end of the transformer inner core.
[0015] Optionally, in the above transformer conductive member connection structure, the number of the threaded holes is at least two, and the second conductive connection member can be connected to the two threaded holes in a one-to-one correspondence through at least two bolts.
[0016] Optionally, in the above-mentioned transformer conductive part connection structure, the transformer core includes an inner core body and a connecting adapter, the first end of the inner core body is the first end of the transformer core, one end of the connecting adapter is welded to the second end of the inner core body, and the other end of the connecting adapter is the second end of the transformer core.
[0017] Optionally, in the above transformer conductive member connection structure, one end of the connection adapter has a welding chamfer;
[0018] One end of the connection adapter is welded to the second end of the inner core body through a first full weld structure that is polished and smooth.
[0019] Optionally, in the above transformer conductive component connection structure, one end of the connection adapter is positioned and welded to the second end of the inner core body.
[0020] Optionally, in the above transformer conductive member connection structure, the first conductive connection member can be welded to the first end of the transformer inner core.
[0021] Optionally, in the above transformer conductive member connection structure, the entire surface of the transformer inner core welding assembly formed by welding the first conductive connecting member and the first end of the transformer inner core has a tin-plated layer or a nickel-plated layer;
[0022] And / or, the entire surface of the second conductive connecting member has a tin-plated layer or a nickel-plated layer.
[0023] Optionally, in the above transformer conductive member connection structure, the first conductive connection member is positioned and welded to the first end of the transformer inner core;
[0024] And / or, the first conductive connector is welded to the first end of the transformer inner core through a second fully welded structure that is polished and smooth.
[0025] Optionally, in the above transformer conductive component connection structure, the transformer core is a semicircular copper tube.
[0026] It can be seen from the above technical scheme that the transformer conductive member connection structure provided by the utility model, since the first conductive connector and the second conductive connector are connected to the transformer core in sequence, and in order to ensure that the coil group can be inserted into the transformer core and located between the first conductive connector and the second conductive connector, the assembly order of the transformer conductive member connection structure should be the first end of the transformer core is connected to the first conductive connector - the coil group is inserted into the transformer core - the second end of the transformer core is tightened and connected with the second conductive connector through the matching of bolts and threaded holes. Through the above arrangement, the operation of connecting the second end of the transformer core with the second conductive connector by welding is effectively avoided, thereby avoiding the high temperature generated by welding from causing adverse effects on the coil group that has been inserted into the transformer core, such as the high temperature is transmitted to the coil of the coil group through the transformer core, which is easy to destroy the insulation performance of the coil conductor; during welding, due to high temperature and rapid cooling, residual stress will be generated inside the welded weld (transformer core and another conductive connector), which is easy to cause deformation of the weld after cooling. Through the above arrangement, the performance of the transformer is ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 A schematic structural diagram of a transformer inner core welding assembly formed by combining a transformer inner core and a first conductive connector provided by an embodiment of the utility model;
[0029] Figure 2 A schematic structural diagram of a transformer conductive component connection structure provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0030] The utility model discloses a transformer conductive piece connection structure to ensure the performance of the transformer.
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] like Figure 1 and Figure 2As shown, the embodiment of the utility model provides a transformer conductive member connection structure, including a transformer core 1, a first conductive connector 2, a second conductive connector 6 and a coil group 5. The transformer core 1 has a first end and a second end, and the second end has a threaded hole 31; the first conductive connector 2 can be connected to the first end of the transformer core 1; the second conductive connector 6 can be connected to the threaded hole 31 through a bolt 4, so that the second conductive connector 6 is connected to the second end of the transformer core 1, and the first conductive connector 2 and the second conductive connector 6 are connected to the transformer core 1 in sequence; the coil group 5 is passed through the transformer core 1 and is located between the first conductive connector 2 and the second conductive connector 6.
[0033] In the transformer conductive member connection structure provided by the embodiment of the utility model, since the first conductive connector 2 and the second conductive connector 6 are connected to the transformer core 1 in sequence, and in order to ensure that the coil group 5 can be inserted into the transformer core 1 and is located between the first conductive connector 2 and the second conductive connector 6, the assembly order of the transformer conductive member connection structure should be: the first end of the transformer core 1 is connected to the first conductive connector 2 - the coil group 5 is inserted into the transformer core 1 - the second end of the transformer core 1 is tightened and connected to the second conductive connector 6 by the bolt 4 and the threaded hole 31. Through the above arrangement, the operation of connecting the second end of the transformer core 1 with the second conductive connector 6 by welding is effectively avoided, thereby avoiding the high temperature generated by welding from causing adverse effects on the coil group 5 that has been inserted into the transformer core 1, such as the high temperature is transmitted to the coil of the coil group 5 through the transformer core, which is easy to destroy the insulation performance of the coil conductor; during welding, due to high temperature and rapid cooling, residual stress will be generated inside the welded parts (transformer core and another conductive connector), which is easy to cause deformation of the welded parts after cooling. Through the above arrangement, the performance of the transformer is ensured.
[0034] The transformer may be a high-frequency transformer, and the coil group 5 may be a high-frequency coil group.
[0035] It is understandable that by providing the threaded hole 31 at the second end of the transformer core 1 for connection with the connection hole of the second conductive connector 6 via the bolt 4, no additional nut is required during the connection with the bolt 4, thereby improving work efficiency.
[0036] Furthermore, after completing the above connection, the high-frequency transformer parameters are detected. If the detection is unqualified, the bolt 4 and the threaded hole 31 can be relatively disassembled to enable at least the second conductive connector 6 and the coil group 5 to be disassembled relative to the transformer core 1, so as to facilitate the adjustment and modification of the transformer conductive component connection structure. At least the second conductive connector 6 and the coil group 5 can be used again, thereby improving the qualified rate, reducing the product scrapping cost, and effectively reducing the maintenance cost.
[0037] Furthermore, since welding of conductive parts is a highly technical job, relevant professional knowledge and skills are required to ensure that the welding quality meets the requirements, and the labor cost is high. By changing the connection between the second end of the transformer core 1 and the second conductive connector 6 from welding to the connection between the bolt 4 and the threaded hole 31, the number of welding of conductive parts can be effectively reduced, thereby saving labor costs.
[0038] Furthermore, various defects may occur during the welding process, such as pores, cracks, and lack of fusion, which seriously affect the transmission of high-frequency current and may cause accidents such as fire when the equipment is running. By reducing the number of welding times of conductive parts, the probability of the above defects can be reduced, thereby improving the safety of equipment operation.
[0039] Moreover, the conductive welding installation is not conducive to realizing the assembly line operation and has low efficiency. By reducing the number of times the conductive parts are welded, the assembly line operation can be facilitated, the production efficiency can be improved, and the production cost of the product can be reduced.
[0040] In this embodiment, the first conductive connector 2 can be welded to the first end of the transformer core 1. Alternatively, the first conductive connector 2 and the first end of the transformer core 1 can also be connected through a bolt and a threaded hole structure.
[0041] For the convenience of connection, the threaded hole 31 is located at the end surface of the second end of the transformer core 1. That is, the bolt 4 can be arranged at the second end of the transformer core 1 along the extension direction of the transformer core 1, so that the bolt 4 is connected with the threaded hole 31, and a gap for clamping the second conductive connector is formed between the head of the bolt 4 and the end surface of the second end of the transformer core 1. By tightening the bolt 4 relative to the threaded hole 31, the connection between the second conductive connector and the second end of the transformer core 1 is achieved.
[0042] Of course, the threaded hole 31 can also be set on the second end side of the transformer core 1, the bolt 4 passes through the mounting hole of the second conductive connecting member 6 and is connected to the second end side of the transformer core 1, and the second conductive connecting member 6 is connected to the side or end surface of the second end of the transformer core 1.
[0043] In order to ensure the circumferential positioning of the second conductive connector 6 and the transformer core 1 , the number of the threaded holes 31 is at least two, and the second conductive connector 6 can be connected to the two threaded holes 31 in a one-to-one correspondence through at least two bolts 4 .
[0044] like Figure 1 and Figure 2As shown, the transformer core 1 includes a core body and a connection adapter 11, the first end of the core body is the first end of the transformer core 1, one end of the connection adapter 11 is welded to the second end of the core body, and the other end of the connection adapter 11 is the second end of the transformer core 1. Through the above arrangement, it is convenient to process the core body and the connection adapter 11 separately. Among them, the outer contours (cross sections) of the core body and the connection adapter 11 are consistent, so that the transformer core 1 forms a structure with a flat outer surface.
[0045] In order to ensure the connection effect, one end of the connection adapter 11 has a welding chamfer; one end of the connection adapter 11 is welded to the second end of the inner core body through a first fully welded structure 13 that is polished and smooth. By providing a welding chamfer at one end of the connection adapter 11, the welding can be made stronger, the connection can be tighter, and defects such as cold welding and cracks can be avoided;
[0046] Furthermore, one end of the connecting adapter 11 is positioned and welded to the second end of the inner core body.
[0047] In the transformer conductive component connection structure provided by the embodiment of the utility model, the overall surface of the transformer core welding assembly formed by welding the first conductive connector 2 and the first end of the transformer core 1 has a tin-plated layer or a nickel-plated layer; wherein the first conductive connector 2 and the transformer core 1 are generally copper components. By tinning or nickel-plating the surface of the copper component, the component can be effectively protected. For example, the tinned component (such as the copper busbar) has excellent electrical properties, can effectively reduce the contact resistance, and improve the conductivity; the tinned component can still maintain good stability under high temperature and high load working conditions, and is not prone to oxidation and corrosion; the nickel-plated component (such as the copper busbar) also has higher corrosion resistance and wear resistance.
[0048] Furthermore, the entire surface of the second conductive connection member 6 has a tin-plated layer or a nickel-plated layer.
[0049] If the second conductive connector 6 is connected to the transformer core 1 by welding, the welding place cannot be subjected to surface electroplating treatment. After a long time, this place will oxidize, affecting the conductive performance of the conductive part, and posing a safety hazard. Therefore, the second conductive connector 6 can be connected to the threaded hole 31 through the bolt 4, so that the second conductive connector 6 is connected to the second end of the transformer core 1, and the transformer core welding assembly formed by the second conductive connector 6 and the first conductive connector 2 and the transformer core 1 can be plated with a tin layer or a nickel layer respectively. The bolt connection will not damage the plating on the surface of the second conductive connector 6 and the transformer core welding assembly, avoiding increasing the contact resistance of the conductive part, making it difficult for the second conductive connector 6 and the transformer core 1 to be oxidized and corroded, etc., thereby enhancing the electrical performance of the second conductive connector 6.
[0050] In order to improve the welding effect, the first conductive connector 2 is positioned and welded to the first end of the transformer core 1. By positioning welding, the welding deformation is controlled, the consistency of the product can be ensured, and the product qualification rate can be improved.
[0051] In addition, the first conductive connector 2 is welded to the first end of the transformer core 1 through a polished second full weld structure 12. After full welding, the second full weld structure 12 is polished and smooth, thereby avoiding welding defects as much as possible, effectively improving the high-frequency current transmission capacity, and avoiding accidents such as fire caused by high temperature generated during equipment operation.
[0052] Preferably, the transformer core 1 is a semicircular copper tube.
[0053] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A transformer conductive member connection structure, characterized in that: include: A transformer core (1), the transformer core (1) having a first end and a second end, the second end having a threaded hole (31); A first conductive connection member (2), the first conductive connection member (2) being capable of being connected to a first end of the transformer core (1); a second conductive connecting member (6), the second conductive connecting member (6) being connectable to the threaded hole (31) via a bolt (4), so that the second conductive connecting member (6) is connected to the second end of the transformer core (1), and the first conductive connecting member (2) and the second conductive connecting member (6) are connected to the transformer core (1) in sequence; A coil assembly (5), the coil assembly (5) being inserted into the transformer inner core (1) and being located between the first conductive connecting member (2) and the second conductive connecting member (6).
2. The transformer conductive member connection structure according to claim 1, characterized in that: The threaded hole (31) is located on the end surface of the second end of the transformer inner core (1).
3. The transformer conductive member connection structure according to claim 1, characterized in that: The number of the threaded holes (31) is at least two, and the second conductive connecting member (6) can be connected to the two threaded holes (31) in a one-to-one correspondence via at least two of the bolts (4).
4. The transformer conductive member connection structure according to claim 1, characterized in that: The transformer inner core (1) comprises an inner core body and a connection adapter (11), wherein a first end of the inner core body is the first end of the transformer inner core (1), one end of the connection adapter (11) is welded to a second end of the inner core body, and the other end of the connection adapter (11) is the second end of the transformer inner core (1).
5. The transformer conductive member connection structure according to claim 4, characterized in that: One end of the connecting adapter (11) has a welding chamfer; One end of the connection adapter (11) is welded to the second end of the inner core body via a first fully welded structure (13) that is polished and smooth.
6. The transformer conductive member connection structure according to claim 4, characterized in that: One end of the connecting adapter (11) is positioned and welded to the second end of the inner core body.
7. The transformer conductive member connection structure according to claim 1, characterized in that: The first conductive connection member (2) can be welded to the first end of the transformer inner core (1).
8. The transformer conductive member connection structure according to claim 7, characterized in that: The entire surface of the transformer inner core welding assembly formed by welding the first conductive connecting member (2) and the first end of the transformer inner core (1) has a tin-plated layer or a nickel-plated layer; And / or, the entire surface of the second conductive connecting member (6) has a tin-plated layer or a nickel-plated layer.
9. The transformer conductive member connection structure according to claim 7, characterized in that: The first conductive connecting member (2) is positioned and welded to a first end of the transformer inner core (1); And / or, the first conductive connection member (2) is welded to the first end of the transformer inner core (1) via a second fully welded structure (12) that is polished and smooth.
10. The transformer conductive member connection structure according to any one of claims 1 to 9, characterized in that: The transformer inner core (1) is a semicircular copper tube.