Transformer iron core structure

Abstract

The utility model discloses a transformer iron core structure which comprises a bottom plate, a silicon steel sheet, a first clamping plate, a second clamping plate, a supporting plate, an insulating base plate, a first insulating plate and a second insulating plate, the first clamping plate is arranged on the front side and the rear side of the lower end of the silicon steel sheet in parallel, and the second clamping plate is arranged on the front side and the rear side of the upper end of the silicon steel sheet in parallel. The first clamping plate is detachably and fixedly connected with the bottom plate, the two ends of the supporting plate are detachably and fixedly connected with the first clamping plate and the second clamping plate respectively, the insulating base plates are arranged on the upper end wall of the bottom plate, the lower end wall of the silicon steel sheet abuts against the insulating base plates, and the first insulating plates are arranged at the front end wall and the rear end wall of the supporting plate respectively. And the second insulating plates are respectively arranged on the inner side walls of the first clamping plate and the second clamping plate. According to the technical scheme, the transformer iron core can be assembled more conveniently, quickly, firmly and reliably, the anti-seismic performance of the transformer iron core is effectively improved, and the service life of the transformer iron core is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a transformer core structure. Background Art

[0002] The transformer core is the main magnetic circuit part in a transformer. It is usually composed of hot-rolled or cold-rolled silicon steel sheets with a relatively high silicon content and an insulating paint coated on the surface, which are stacked. The core and the coil wound thereon form a complete electromagnetic induction system. The size of the power transmitted by a power transformer depends on the material and cross-sectional area of the core.

[0003] However, the existing transformer cores on the market at present have the problems of cumbersome assembly, low efficiency, and insufficient firmness in assembly, being prone to loosening, and poor seismic performance, which affect the performance stability and service life of voltage transformation. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a transformer core structure, aiming to solve the technical problems of cumbersome assembly, low efficiency, insufficient firmness in assembly, and being prone to loosening of the existing transformer cores.

[0005] To achieve the above object, the transformer core structure proposed by the utility model includes a bottom plate, silicon steel sheets, a first clamping plate, a second clamping plate, support plates, insulating pads, a first insulating plate, and a second insulating plate. The bottom plates are arranged in parallel left and right. The silicon steel sheets are stacked. The silicon steel sheets are arranged at the upper end of the bottom plate. The first clamping plates are arranged in parallel on the front and rear sides of the lower end of the silicon steel sheets. The second clamping plates are arranged in parallel on the front and rear sides of the upper end of the silicon steel sheets. The first clamping plates and the second clamping plates are used for clamping and fixing the silicon steel sheets. The first clamping plates are respectively detachably and fixedly connected to the bottom plate. The support plates are respectively arranged vertically and in parallel on the front and rear sides of the silicon steel sheets. The two ends of the support plates are respectively detachably and fixedly connected to the first clamping plates and the second clamping plates. The insulating pads are respectively arranged on the upper end walls of the bottom plate. The lower end walls of the silicon steel sheets are in contact with the insulating pads. The first insulating plates are respectively arranged on the front end walls and the rear end walls of the support plates. The second insulating plates are respectively arranged on the inner side walls of the first clamping plates and the second clamping plates, and the second insulating plates are respectively in contact with the side walls of the silicon steel sheets.

[0006] Optionally, it further includes screws and nuts. A plurality of first through holes are respectively recessed at the two ends, the middle of the first clamping plates and the second clamping plates, and the upper and lower ends of the silicon steel sheets. The screws are respectively inserted through the through holes, and the nuts are respectively screwed onto the two ends of the screws. The screws and the nuts are used for clamping and fixing the first clamping plates and the second clamping plates.

[0007] Optionally, a plurality of support protrusion parts are convexly arranged at intervals along the length direction on the inner side wall of the second insulating plate, and the support protrusion parts are respectively in contact with the side walls of the silicon steel sheets.

[0008] Optionally, it further includes fastening bolts. At both ends of the upper end wall of the bottom plate, a support column is respectively convexly arranged. At the upper end parts of the support columns, a threaded hole is respectively concavely arranged. At both ends of the first clamping plate, a second through hole is respectively concavely arranged. The fastening bolts respectively pass through the second through holes and are screwed into the threaded holes.

[0009] Optionally, it further includes a grounding plate and a grounding bolt. The rear end part of the grounding plate is arranged on the upper end wall of the second clamping plate, and the other end of the grounding plate is in contact with the upper end wall of the silicon steel sheet. The grounding bolt is screwed on the side wall of the bottom plate, and the grounding bolt is used for connecting with a grounding wire.

[0010] Optionally, the cross section of the bottom plate is arranged in an I-shaped structure.

[0011] Optionally, both the first clamping plate and the second clamping plate are arranged in a C-shaped structure.

[0012] Optionally, it further includes reinforcing plates. The reinforcing plates are respectively arranged on both sides of the first clamping plate, and the upper and lower ends of the reinforcing plates are respectively fixedly connected with the upper end wall and the lower end wall on the outside of the first clamping plate.

[0013] Optionally, a plurality of mounting plates are convexly arranged along the length direction at the upper end part of the outer side wall of the second clamping plate, and bolt positioning holes are respectively concavely arranged in the mounting plates.

[0014] Optionally, it further includes lifting rings. The lifting rings are respectively screwed at both ends of the upper end wall of the second clamping plate.

[0015] Adopting the technical solution of the present utility model has the following beneficial effects: In the technical solution of the present utility model, the bottom plates are arranged parallel to each other left and right, the silicon steel sheets are stacked, the silicon steel sheets are arranged at the upper end of the bottom plates, the first clamping plates are arranged parallel to the front and rear sides of the lower end of the silicon steel sheets, the second clamping plates are arranged parallel to the front and rear sides of the upper end of the silicon steel sheets, the first clamping plates and the second clamping plates are used to clamp and fix the silicon steel sheets, the first clamping plates are respectively detachably and fixedly connected to the bottom plates, the support plates are respectively arranged vertically and parallel to the front and rear sides of the silicon steel sheets, and the two ends of the support plates are respectively detachably and fixedly connected to the first clamping plates and the second clamping plates, so that the assembly of the transformer core is more convenient and fast, and firm and reliable, effectively improving the seismic performance and service life of the transformer core; at the same time, the insulating pads are respectively arranged on the upper end wall of the bottom plates, the lower end wall of the silicon steel sheets abuts against the insulating pads, the first insulating plates are respectively arranged on the front end wall and the rear end wall of the support plates, the second insulating plates are respectively arranged on the inner side walls of the first clamping plates and the second clamping plates, and the second insulating plates are respectively arranged in abutment with the side walls of the silicon steel sheets, so that the transformer core has good insulation performance and temperature resistance performance, ensuring its reliable operation in the working environment and preventing the occurrence of electrical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 Schematic diagram of the overall structure of a transformer core structure according to an embodiment of the present utility model Figure 1 ;

[0018] Figure 2 Schematic diagram of the overall structure of a transformer core structure according to an embodiment of the present utility model Figure 2 ;

[0019] Figure 3 Exploded structure schematic diagram of a transformer core structure according to an embodiment of the present utility model.

[0020] The realization of the object of the present utility model, its functional characteristics and advantages will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0024] The present utility model provides a transformer core structure.

[0025] As Figures 1 to 3 shown, in an embodiment of the present utility model, the transformer core structure includes a bottom plate 101, silicon steel sheets 102, a first clamping plate 103, a second clamping plate 104, a support plate 105, an insulating cushion plate 106, a first insulating plate 107, and a second insulating plate 108. The bottom plate 101 is arranged horizontally left and right, the silicon steel sheets 102 are stacked, the silicon steel sheets 102 are arranged at the upper end of the bottom plate 101, the first clamping plate 103 is arranged in parallel on the front and rear sides of the lower end of the silicon steel sheets 102, the second clamping plate 104 is arranged in parallel on the front and rear sides of the upper end of the silicon steel sheets 102. The first clamping plate 103 and the second clamping plate 104 are used to clamp and fix the silicon steel sheets 102. The first clamping plate 103 is detachably and fixedly connected to the bottom plate 202 respectively. The support plates 105 are arranged vertically and in parallel on the front and rear sides of the silicon steel sheets 102 respectively. The two ends of the support plate 105 are detachably and fixedly connected to the first clamping plate 103 and the second clamping plate 104 respectively. The insulating cushion plates 106 are arranged on the upper end walls of the bottom plate 101 respectively. The lower end wall of the silicon steel sheets 102 abuts against the insulating cushion plates 106. The first insulating plates 107 are arranged on the front end walls and the rear end walls of the support plates 105 respectively, and the first insulating plates 107 are arranged to wrap the support plates 105. The second insulating plates 108 are arranged on the inner side walls of the first clamping plate 103 and the second clamping plate 104 respectively, and the second insulating plates 108 are arranged to abut against the side walls of the silicon steel sheets 102 respectively, so as to make the insulation performance of the transformer good and prevent the occurrence of electrical accidents.

[0026] Further, it also includes a screw rod 109 and nuts 110. A plurality of first through holes (not shown) are respectively recessed at both ends, the middle of the first clamping plate 103 and the second clamping plate 104, and the upper and lower ends of the silicon steel sheet 102. The screw rod 109 is respectively disposed through the through holes, and the nuts 110 are respectively screwed onto both ends of the screw rod 109. The screw rod 109 and the nuts 110 are used to clamp and fix the first clamping plate 103 and the second clamping plate 104.

[0027] Further, a plurality of support protrusion parts 1081 are convexly provided at intervals along the length direction on the inner side wall of the second insulating plate 108. The support protrusion parts 1081 are respectively in contact with the side walls of the silicon steel sheet 102, which can effectively reduce the insulation resistance to reduce the loss of current flowing through.

[0028] Further, it also includes fastening bolts 111. A support column 1011 is respectively convexly provided at both ends of the upper end wall of the bottom plate 101. A threaded hole (not shown) is respectively recessed at the upper end of the support column 1011. A second through hole (not shown) is respectively recessed at both ends of the first clamping plate 103. The fastening bolts 111 are respectively disposed through the second through holes and screwed into the threaded holes, making the assembly between the bottom plate and the first clamping plate more firm and reliable, effectively improving the seismic performance and service life of the transformer core.

[0029] Further, it also includes a grounding piece 112 and a grounding bolt 113. The rear end of the grounding piece 112 is disposed on the upper end wall of the second clamping plate 104, and the other end of the grounding piece 112 is in contact with the upper end wall of the silicon steel sheet 102. The grounding bolt 113 is screwed on the side wall of the bottom plate 101. The grounding bolt 113 is used to connect with a grounding wire, so that the iron core can be effectively grounded. The grounding of the iron core can reduce the problems of inductive coupling and mutual inductance interference, thus ensuring the normal operation of the transformer. At the same time, the grounding of the iron core can also reduce electromagnetic leakage and electromagnetic radiation, thus protecting personal safety.

[0030] Further, the cross section of the bottom plate 101 is arranged in an I-shaped structure, making the bottom plate more stable. With the cross-sectional shape being I-shaped, the bottom plate has two parallel surfaces to bear the load, so it is more stable and can withstand greater tension, bending and pressure. The two surfaces of the flange are parallel to each other, making the connection, processing and installation simple.

[0031] Further, both the first clamping plate 103 and the second clamping plate 104 are arranged in a C-shaped structure, and the cross-sectional shape is C-shaped, which makes the flanges on both sides wider, capable of providing a larger stress area, thereby enhancing its load-bearing capacity.

[0032] Further, it further includes reinforcing plates 114 which are respectively arranged on both sides of the first clamping plate 103. The upper and lower ends of the reinforcing plates 114 are respectively fixedly connected to the upper end wall and the lower end wall on the outer side of the first clamping plate 103, and can bear greater tensile force, bending force and pressure.

[0033] Further, a plurality of mounting plates 115 protrude along the length direction from the upper end part of the outer side wall of the second clamping plate 104. The mounting plates 115 are respectively recessed with bolt positioning holes 1151, which is convenient for the installation and fixation of the transformer core.

[0034] Further, it further includes lifting rings 116 which are respectively screwed at both ends of the upper end wall of the second clamping plate 104, which is convenient for the transfer and installation of the transformer core.

[0035] Specifically, the working principle and process of the present utility model are as follows:

[0036] 1. The bottom plates are arranged parallel to each other left and right, the silicon steel sheets are stacked, the silicon steel sheets are arranged at the upper end part of the bottom plates, the first clamping plates are arranged parallel to the front and back sides of the lower end part of the silicon steel sheets, the second clamping plates are arranged parallel to the front and back sides of the upper end part of the silicon steel sheets, the first clamping plates and the second clamping plates are used to clamp and fix the silicon steel sheets, the first clamping plates are respectively detachably and fixedly connected to the bottom plates, the support plates are respectively arranged vertically and parallel to the front and back sides of the silicon steel sheets, and both ends of the support plates are respectively detachably and fixedly connected to the first clamping plates and the second clamping plates, so that the assembly of the transformer core is more convenient and fast, and firm and reliable, effectively improving the seismic performance and service life of the transformer core;

[0037] 2. The insulating pads are respectively arranged on the upper end wall of the bottom plates, the lower end wall of the silicon steel sheets abuts against the insulating pads, the first insulating plates are respectively arranged on the front end wall and the rear end wall of the support plates, the second insulating plates are respectively arranged on the inner side walls of the first clamping plates and the second clamping plates, and the second insulating plates are respectively arranged in contact with the side walls of the silicon steel sheets, so that the transformer core has good insulation performance and temperature resistance performance, ensuring its reliable operation in the working environment and preventing the occurrence of electrical accidents.

[0038] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A transformer core structure, characterized in that: The invention comprises a bottom plate, a silicon steel sheet, a first clamping plate, a second clamping plate, a support plate, an insulating pad, a first insulating plate and a second insulating plate, wherein the bottom plate is arranged parallel to each other, the silicon steel sheets are arranged in a stacked manner, the silicon steel sheets are arranged at the upper end of the bottom plate, the first clamping plate is arranged parallel to the front and rear sides of the lower end of the silicon steel sheet, the second clamping plate is arranged parallel to the front and rear sides of the upper end of the silicon steel sheet, the first clamping plate and the second clamping plate are used to clamp and fix the silicon steel sheet, and the first clamping plate is detachably fixed to the bottom plate respectively. The support plates are respectively arranged vertically and parallelly on the front and rear sides of the silicon steel sheet, the two ends of the support plate are respectively detachably fixedly connected to the first clamping plate and the second clamping plate, the insulating pads are respectively arranged on the upper end wall of the bottom plate, the lower end wall of the silicon steel sheet abuts against the insulating pads, the first insulating plates are respectively arranged on the front end wall and the rear end wall ends of the support plate, the second insulating plates are respectively arranged on the inner side walls of the first clamping plate and the second clamping plate, and the second insulating plates are respectively abutted against the side walls of the silicon steel sheet.

2. The transformer core structure according to claim 1, characterized in that: It also includes a screw and a nut. A plurality of first through holes are respectively recessed at the two ends and the middle of the first clamping plate and the second clamping plate and the upper end and the lower end of the silicon steel sheet. The screw is respectively inserted into the through holes. The nut is respectively screwed on the two ends of the screw. The screw and the nut are used to clamp and fix the first clamping plate and the second clamping plate.

3. The transformer core structure according to claim 1, characterized in that: The inner side wall of the second insulating plate is provided with a plurality of supporting protrusions at intervals along the length direction, and the supporting protrusions are respectively disposed in contact with the side walls of the silicon steel sheet.

4. The transformer core structure according to claim 1, characterized in that: It also includes fastening bolts, and a support column is protruded from both ends of the upper end wall of the base plate, and a threaded hole is recessed at the upper end of the support column. A second through hole is recessed at both ends of the first clamping plate, and the fastening bolts are respectively passed through the second through holes and screwed into the threaded holes.

5. The transformer core structure according to claim 1, characterized in that: It also includes a grounding plate and a grounding bolt. The rear end of the grounding plate is arranged on the upper end wall of the second clamping plate, and the other end of the grounding plate is abutted against the upper end wall of the silicon steel sheet. The grounding bolt is screwed on the side wall of the base plate, and the grounding bolt is used to connect to the grounding wire.

6. The transformer core structure according to claim 1, characterized in that: The cross section of the bottom plate is arranged in an I-shaped structure.

7. The transformer core structure according to claim 1, characterized in that: The first clamping plate and the second clamping plate are both arranged in a C-shaped structure.

8. The transformer core structure according to claim 7, characterized in that: It also includes a reinforcing plate, which is respectively arranged on both sides of the first clamping plate, and the upper and lower ends of the reinforcing plate are respectively fixedly connected to the upper end wall and the lower end wall of the outer side of the first clamping plate.

9. The transformer core structure according to claim 1, characterized in that: A plurality of mounting plates are protruded from the upper end portion of the outer side wall of the second clamping plate along the length direction, and the mounting plates are respectively concavely provided with bolt positioning holes.

10. The transformer core structure according to claim 1, characterized in that: It also includes hanging rings, which are respectively screwed on the two ends of the upper end wall of the second clamping plate.

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