Insulator assembling structure of transformer

Abstract

The utility model discloses an insulator assembling structure of a transformer, which comprises a coil outer outgoing line busbar, a coil inner outgoing line busbar and a clamping piece plate which are arranged front and back, the lower parts of the surfaces of the opposite sides of the coil outer outgoing line busbar and the coil inner outgoing line busbar are respectively provided with a pressing structure, and the utility model relates to the technical field of dry type transformers. According to the insulator assembling structure of the transformer, by arranging the two pressing structures, when the device is assembled, the first insulator is firstly placed between the two pressing structures, then the first insulator is installed between the coil outer outgoing line busbar and the coil inner outgoing line busbar through bolts, and then the second insulator can be installed; when the second insulator is installed, the outgoing line busbar in the coil possibly needs to be opened forwards by a certain distance, and because the two sides of the first insulator are provided with the pressing structures, the springs in the pressing structures can deform, so that the first insulator cannot be pressed, and the problem of cracking cannot be generated.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformers, in particular to an insulator assembly structure of a transformer. Background Art

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places. Simply put, a dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil.

[0003] For the coils of transformers with voltages of 35kV and below and capacities of 25000kVA and below, in order to enhance the short-circuit resistance of the coils, two insulators are used to connect and fix the two busbars inside and outside the coils, and then two insulators are used to connect and fix the busbar inside the coils to supporting parts such as clamps. The two insulators are installed in a certain order, which means that during the installation of the next insulator, the inner busbar may need to be opened outwards, which will put a certain amount of pressure on the previously installed insulator, causing its edges to be damaged and lose its effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an insulator assembly structure for a transformer, which solves the problem that the installation of two insulators in a dry-type transformer has a sequential order, which results in that during the installation of the latter insulator, the inner busbar may need to be pried outward, which will put a certain amount of pressure on the previously installed insulator, thereby causing its edge to be damaged and lose its effect.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an insulator assembly structure of a transformer, including a coil outgoing line busbar, a coil inner line busbar and a clamping plate arranged in front and back;

[0006] A clamping structure is provided at the lower part of the surface of the coil outgoing wire busbar and the coil inner outgoing wire busbar on the opposite side;

[0007] The structures of the two clamping structures are the same, wherein one of the clamping structures comprises an extension ring fixedly connected to the lower part of the rear surface of the coil outgoing line busbar, a contact ring is laterally slidably connected inside the extension ring, and a plurality of springs are laterally fixedly connected between the contact ring and the coil outgoing line busbar;

[0008] The two pressing structures are symmetrically arranged with respect to each other, and a first insulator is fixedly connected between the two pressing structures.

[0009] Furthermore, a first connection hole and a second connection hole are respectively formed transversely through the lower part of the front side surface of the coil outgoing wire busbar and the coil inner incoming wire busbar.

[0010] Furthermore, the first connection hole, the second connection hole, the two extension rings, the two contact rings and the center axis of the first insulator are located in the same straight line.

[0011] Furthermore, a plurality of third connection holes are provided transversely through the upper portion of the front surface of the coil outgoing line busbar.

[0012] Furthermore, a neutral busbar is laterally fixedly connected to the upper portion of the rear side surface of the inner output busbar of the coil.

[0013] Furthermore, a second insulator is transversely fixedly connected between the neutral busbar and the clamping plate.

[0014] Compared with the prior art, the beneficial effect of the utility model is as follows: the insulator assembly structure of the transformer is provided with two clamping structures. When assembling the device, the first insulator is first placed between the two clamping structures, and then the first insulator is installed between the coil outgoing line busbar and the coil inner line busbar by bolts, and then the second insulator can be installed. When installing the second insulator, it may be necessary to bend the coil inner line busbar forward a certain distance. Since the clamping structure is provided on both sides of the first insulator, the spring in the structure can be deformed, so that the first insulator will not be subjected to pressure, and the problem of rupture will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of the area at center A;

[0017] Figure 3 It is a side structural schematic diagram of the utility model.

[0018] In the figure: 1-coil outgoing line busbar, 2-coil inner outgoing line busbar, 3-neutral line busbar, 4-clamping plate, 5-extension ring, 6-contact ring, 7-spring, 8-first insulator, 9-second connecting hole, 10-second connecting hole, 11-third connecting hole, 12-fourth connecting hole, 13-fifth connecting hole, 14-second insulator. DETAILED DESCRIPTION

[0019] 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.

[0020] Please refer to Figures 1-3 , the present utility model provides a technical solution: an insulator assembly structure of a transformer, including a coil outgoing line busbar 1, a coil incoming line busbar 2 and a clamping plate 4 arranged front and back;

[0021] Pressing structures are arranged at the lower parts of the surfaces of the opposite sides of the coil outgoing line busbar 1 and the coil incoming line busbar 2;

[0022] The structures of the two pressing structures are the same. One of the pressing structures includes an extension ring 5 fixedly connected to the lower part of the rear surface of the coil outgoing line busbar 1. A contact ring 6 is horizontally slidably connected inside the extension ring 5. A plurality of springs 7 are horizontally fixedly connected between the contact ring 6 and the coil outgoing line busbar 1;

[0023] The two pressing structures are symmetrically arranged, and a first insulator 8 is fixedly connected between the two pressing structures.

[0024] A neutral line busbar 3 is horizontally fixedly connected to the upper part of the rear surface of the coil incoming line busbar 2.

[0025] A second insulator 14 is horizontally fixedly connected between the neutral line busbar 3 and the clamping plate 4.

[0026] For the insulator assembly structure of the transformer, by setting two pressing structures, when the device is assembled, first place the first insulator 8 between the two pressing structures, then install the first insulator 8 between the coil outgoing line busbar 1 and the coil incoming line busbar 2 through bolts, and then the second insulator 14 can be installed. When installing the second insulator 14, it may be necessary to bend the coil incoming line busbar 2 forward by a certain distance. Since pressing structures are arranged on both sides of the first insulator 8, the springs 7 in this structure can deform, so that the first insulator 8 will not be under pressure and will not crack.

[0027] A plurality of fourth connection holes 12 are horizontally penetrated and opened on the upper part of the front surface of the coil incoming line busbar 2. A plurality of fifth connection holes 13 corresponding to the plurality of fourth connection holes 12 are horizontally penetrated and opened on the outer surface of the neutral line busbar 3. The two are connected through the fourth connection holes 12, the fifth connection holes 13 and a bolt structure.

[0028] First connection holes 9 and second connection holes 10 are horizontally penetrated and opened on the lower parts of the front surfaces of the coil outgoing line busbar 1 and the coil incoming line busbar 2 respectively.

[0029] The central axes of the first connection hole 9, the second connection hole 10, the two extension rings 5, the two contact rings 6 and the first insulator 8 are located on the same straight line.

[0030] When installing the first insulator 8, place it between two pressing structures. Then, pass the bolt rod through the second connection hole 10 until its front end extends out through the first connection hole 9. Next, tighten the nut on the bolt.

[0031] A plurality of third connection holes 11 are horizontally and penetratingly formed in the upper part of the front side surface of the outgoing line busbar 1 of the coil.

[0032] The third connection holes 11 are used for connecting with external cables.

[0033] For the insulator assembly structure of this transformer, by setting two pressing structures, during the assembly of the device, first place the first insulator 8 between the two pressing structures. Then, install the first insulator 8 between the outgoing line busbar 1 of the coil and the incoming line busbar 2 of the coil through bolts. Next, the installation of the second insulator 14 can be carried out. When installing the second insulator 14, it may be necessary to bend the incoming line busbar 2 of the coil forward by a certain distance. Since pressing structures are provided on both sides of the first insulator 8, the spring 7 in this structure can deform, so that the first insulator 8 will not be subjected to pressure and will not have the problem of cracking.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An insulator assembly structure of a transformer, characterized in that: It includes the coil outgoing busbar (1), the coil incoming busbar (2) and the clamping plate (4) which are arranged front and back. Pressing structures are provided at the lower parts of the surfaces of the opposite sides of the coil outgoing busbar (1) and the coil incoming busbar (2). The two pressing structures have the same structure. One of the pressing structures includes an extension ring (5) fixedly connected to the lower part of the rear surface of the coil outgoing busbar (1). A contact ring (6) is horizontally slidably connected inside the extension ring (5). A plurality of springs (7) are horizontally fixedly connected between the contact ring (6) and the coil outgoing busbar (1). The two pressing structures are symmetrically arranged, and a first insulator (8) is fixedly connected between the two pressing structures.

2. The insulator assembly structure of a transformer according to claim 1, characterized in that: First connection holes (9) and second connection holes (10) are respectively horizontally penetrated and opened at the lower parts of the front surfaces of the coil outgoing busbar (1) and the coil incoming busbar (2).

3. The insulator assembly structure of a transformer according to claim 2, characterized in that: The central axes of the first connection hole (9), the second connection hole (10), the two extension rings (5), the two contact rings (6) and the first insulator (8) are on the same straight line.

4. The insulator assembly structure of a transformer according to claim 1, wherein: A plurality of third connection holes (11) are horizontally penetrated and opened at the upper part of the front surface of the coil outgoing busbar (1).

5. An insulator assembly structure of a transformer according to claim 1, characterized in that: A neutral busbar (3) is horizontally fixedly connected to the upper part of the rear surface of the coil incoming busbar (2).

6. The insulator assembly structure of a transformer according to claim 5, characterized in that: A second insulator (14) is horizontally fixedly connected between the neutral busbar (3) and the clamping plate (4).

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