Oil-immersed transformer core with high impact resistance

Abstract

The utility model discloses an oil -immersed transformer iron core that impact resistance is high, including silicon steel sheet, first clamping piece, second clamping piece, bottom plate, shock insulation rubber pad, first insulating sheet, second insulating sheet, first screw rod, first nut, second screw rod, second nut and fastening sheet, shock insulation rubber pad is respectively arranged in the both ends of the upper end wall of bottom plate, and the both ends of first screw rod are respectively set up in first clamping piece and second clamping piece setting, and first nut is respectively rotated in the both ends of first screw rod, and the both ends of second screw rod are respectively set up in first clamping piece and second clamping piece, and second nut is respectively rotated in the both ends of second screw rod, and the both ends of fastening sheet are respectively with first clamping piece and second clamping piece detachable fixed connection. The technical scheme of the utility model can make the assembly of oil -immersed transformer iron core more convenient and fast, and effectively improve the impact resistance of oil -immersed transformer iron core.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an oil-immersed transformer core with high impact resistance. Background Technology

[0002] The core is the magnetic circuit part of a transformer. During operation, it generates heat due to hysteresis and eddy current losses. To reduce heat loss and decrease size and weight, the core is constructed from cold-rolled grain-oriented silicon steel sheets with a high permeability of less than 0.35mm. Based on the arrangement of the windings within the core, there are core-type and shell-type transformers. In large-capacity transformers, cooling oil channels are often provided within the core to ensure that the heat generated by core losses is effectively carried away by the circulating insulating oil, achieving good cooling. In oil-immersed transformers, the transformer body (windings and core) is housed in an oil tank filled with transformer oil, which is welded from steel plates. The oil tank of medium and small transformers consists of a shell and a cover; the transformer body is placed inside the shell, and the body can be lifted out for maintenance by opening the cover.

[0003] However, the existing oil-immersed transformer cores with high impact resistance on the market have problems with unreliable assembly and poor impact resistance, which makes the cores prone to loosening during handling and use, affecting the performance stability and service life of the transformer. Utility Model Content

[0004] The main purpose of this utility model is to propose an oil-immersed transformer core with high impact resistance, aiming to solve the problem that the existing oil-immersed transformer cores with high impact resistance are not securely assembled and have poor impact resistance.

[0005] To achieve the above objectives, this utility model proposes a high-impact-resistant oil-immersed transformer core, comprising silicon steel sheets, a first clamping member, a second clamping member, a base plate, shock-absorbing and insulating rubber pads, a first insulating sheet, a second insulating sheet, a first screw, a first nut, a second screw, a second nut, and fastening metal plates. The silicon steel sheets are stacked, with the first and second clamping members respectively located at the front and rear ends of the upper and lower ends of the silicon steel sheets. The base plate is located on both sides of the lower end of the first clamping member. The shock-absorbing and insulating rubber pads are located at both ends of the upper wall of the base plate, with the upper walls of the pads abutting against the lower walls of the first clamping member and the silicon steel sheets. The first insulating sheets are located on the upper wall of the base plate, with their upper walls abutting against the shock-absorbing and insulating rubber pads and the silicon steel sheets. The second insulating sheets are located on... The first clamping member and the second clamping member are located on their inner sidewalls, and the second insulating sheet abuts against the sidewall of the silicon steel sheet. The first screw is horizontally disposed at the upper and lower ends of the left and right sides of the silicon steel sheet, and the front and rear ends of the first screw are respectively inserted through the first clamping member and the second clamping member. The first nut is screwed onto the two ends of the first screw. The second screw is vertically disposed at the left and right ends of the front and rear ends of the silicon steel sheet, and the upper and lower ends of the second screw are respectively inserted through the first clamping member and the second clamping member. The second nut is screwed onto the two ends of the second screw. The fastening metal sheet is disposed in the middle of the upper and lower ends of the silicon steel sheet, and the two ends of the fastening metal sheet are detachably and fixedly connected to the first clamping member and the second clamping member, and the fastening metal sheet abuts against the upper and lower ends of the silicon steel sheet.

[0006] Optionally, it also includes a U-shaped screw and a third nut. A fixing plate is respectively protruding from the middle of the lower end wall of the first clamping member and the upper end wall of the second clamping member. A through hole is provided at both ends of the fastening metal sheet. The U-shaped screw is respectively inserted through the through hole and the two ends of the U-shaped screw are respectively inserted through the fixing plate. The third nut is respectively screwed on both ends of the U-shaped screw.

[0007] Optionally, the fastening metal sheet is made of elastic cold-rolled grain-oriented silicon steel.

[0008] Optionally, it also includes an insulating sleeve, which is respectively sleeved on the first screw and the second screw.

[0009] Optionally, it also includes lifting plates, which are respectively disposed at both ends of the upper end of the silicon steel sheet, and the two ends of the lifting plates are respectively detachably and fixedly connected to the two ends of the second clamping member by bolts, and the lifting plates are recessed with lifting holes.

[0010] Optionally, both the first clamping member and the second clamping member are made of SUS301 stainless steel.

[0011] Optionally, both the first clamping member and the second clamping member have a C-shaped cross-section, and both the first clamping member and the second clamping member have multiple support plates vertically arranged on their outer walls.

[0012] Optionally, it includes a third screw and a fourth nut. The third screw protrudes from both ends of the upper wall of the base plate. The third screw passes through the first insulating sheet, the shock-absorbing insulating rubber pad, and the first clamping member. The fourth nut is screwed onto the upper end of the third screw.

[0013] Optionally, a mounting hole is recessed at each end of the base plate.

[0014] The technical solution of this utility model has the following beneficial effects: The technical solution of this utility model involves first clamping members and second clamping members respectively disposed at the front and rear ends of the upper and lower ends of the silicon steel sheet; a base plate is disposed on both sides of the lower end of the first clamping member; shock-absorbing and insulating rubber pads are disposed at both ends of the upper wall of the base plate, with the upper walls of the shock-absorbing and insulating rubber pads abutting against the lower walls of the first clamping member and the silicon steel sheet; first insulating sheets are disposed on the upper wall of the base plate, with the upper walls of the first insulating sheets abutting against the shock-absorbing and insulating rubber pads and the silicon steel sheet; second insulating sheets are disposed on the inner side walls of the first and second clamping members, abutting against the side walls of the silicon steel sheet; and first screws are horizontally disposed at the upper and lower ends of the left and right sides of the silicon steel sheet, with the front and rear ends of the first screws respectively passing through… The first clamping member and the second clamping member are respectively provided. The first nut is screwed on both ends of the first screw. The second screw is vertically provided on the left and right ends of the front and rear ends of the silicon steel sheet. The upper and lower ends of the second screw are respectively passed through the first clamping member and the second clamping member. The second nut is screwed on both ends of the second screw. The fastening metal plate is respectively provided in the middle of the upper end wall and the lower end wall of the silicon steel sheet. The two ends of the fastening metal plate are detachably fixed to the first clamping member and the second clamping member. The fastening metal plate abuts against the upper end wall and the lower end wall of the silicon steel sheet. This makes the assembly of the oil-immersed transformer core with high impact resistance more convenient, quick and reliable, simple to operate, effectively buffers and absorbs vibration, effectively improves the impact resistance of the oil-immersed transformer core, and effectively ensures the performance stability and service life of the oil-immersed transformer. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an oil-immersed transformer core with high impact resistance according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the overall structure of an oil-immersed transformer core with high impact resistance according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the overall structure of an oil-immersed transformer core with high impact resistance, representing another embodiment of the present invention. Figure 4 This is an exploded structural diagram of an oil-immersed transformer core with high impact resistance according to an embodiment of the present invention. Figure 5 This is a partial structural diagram of an oil-immersed transformer core with high impact resistance according to an embodiment of the present invention. Figure 6 This is a partially exploded structural diagram of an oil-immersed transformer core with high impact resistance according to an embodiment of the present invention.

[0017] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This invention proposes an oil-immersed transformer core with high impact resistance.

[0022] like Figures 1 to 6 As shown, in one embodiment of this utility model, the oil-immersed transformer core with high impact resistance includes silicon steel sheets 101, a first clamping member 102, a second clamping member 103, a base plate 104, a shock-absorbing and insulating rubber pad 105, a first insulating sheet 106, a second insulating sheet 107, a first screw 108, a first nut 109, a second screw 110, a second nut 111, and a fastening metal sheet 112. The silicon steel sheets 101 are stacked, and the first clamping member 102 and the second clamping member 103 are respectively disposed on the silicon steel sheets 101. At the front and rear ends of the upper and lower ends of the first clamping member 102, the base plate 104 is respectively disposed on both sides of the lower end of the first clamping member 102. Shock-absorbing and insulating rubber pads 105 are respectively disposed at both ends of the upper end wall of the base plate 104, with the upper end wall of the shock-absorbing and insulating rubber pads 105 abutting against the lower end wall of the first clamping member 102 and the lower end wall of the silicon steel sheet 101. First insulating sheets 106 are respectively disposed on the upper end wall of the base plate 104, with the upper end wall of the first insulating sheets 106 abutting against the shock-absorbing and insulating rubber pads 105 and the silicon steel sheet 101. The second insulating sheet 107 is respectively disposed on the inner sidewall of the first clamping member 102 and the second clamping member 103, and the second insulating sheet 107 abuts against the sidewall of the silicon steel sheet 101. The first screw 108 is respectively horizontally disposed on the upper and lower ends of the left and right sides of the silicon steel sheet 101, and the front and rear ends of the first screw 108 are respectively disposed through the first clamping member 102 and the second clamping member 103. The first nut 109 is respectively screwed on the two ends of the first screw 108. The second screw 110 is respectively vertically disposed on the silicon steel sheet 101. The front and rear ends of the first clamping member 102 and the second clamping member 103 are respectively installed on the left and right ends of the front and rear ends of the first and rear ends of the second screw 110. The upper and lower ends of the second screw 110 are respectively installed in the middle of the upper and lower ends of the silicon steel sheet 101. The two ends of the fastening metal sheet 112 are respectively detachably and fixedly connected to the first clamping member 102 and the second clamping member 103. The fastening metal sheet 112 abuts against the upper and lower ends of the silicon steel sheet 101.

[0023] Specifically, it also includes a U-shaped screw 113 and a third nut 114. A fixing plate 115 is protruding from the middle of the lower end wall of the first clamping member 102 and the upper end wall of the second clamping member 103. A through hole 1121 is provided at both ends of the fastening metal sheet 112. The U-shaped screw 113 is respectively installed through the through hole 1121 and the two ends of the U-shaped screw 113 are respectively installed through the fixing plate 115. The third nut 114 is screwed onto both ends of the U-shaped screw 113, making the installation and tightening of the fastening metal sheet more convenient and quick. Through the fastening metal sheet and the second screw, the silicon steel sheet is firmly clamped and fixed.

[0024] Specifically, the fastening metal strip 112 is made of elastic cold-rolled grain-oriented silicon steel, also known as cold-rolled transformer steel. This is an important ferrosilicon alloy whose high permeability and impedance properties enable the transformer to operate effectively over a wider frequency range. Furthermore, the use of cold-rolled grain-oriented silicon steel helps reduce the transformer's size and improve energy efficiency. The use of cold-rolled grain-oriented silicon steel significantly improves the performance of the transformer core and effectively buffers and absorbs vibrations, thus significantly improving the shock resistance of oil-immersed transformers.

[0025] Specifically, it also includes an insulating sleeve 116, which is respectively sleeved on the first screw 108 and the second screw 110, playing a good role in insulation and protection, and effectively improving the insulation performance of the transformer.

[0026] Specifically, it also includes lifting plates 117, which are respectively set at both ends of the upper end of the silicon steel sheet 101, and the two ends of the lifting plates 117 are respectively detachably fixedly connected to the two ends of the second clamping member 103 by bolts. The lifting plates 117 are respectively provided with lifting holes 1171, which facilitates the lifting and transportation of the transformer core.

[0027] Specifically, both the first clamping member 102 and the second clamping member 103 are made of SUS301 stainless steel, which has good elasticity and corrosion resistance, effectively ensuring the stability and reliability of the transformer core.

[0028] Specifically, the cross-sections of the first clamping member 102 and the second clamping member 103 are both C-shaped, and the outer walls of the first clamping member 102 and the second clamping member 103 are vertically provided with multiple support plates 119. The C-shaped structure can reduce weight, while the support plates effectively ensure the stability and reliability of the transformer core.

[0029] Specifically, it includes a third screw 120 and a fourth nut 121. The third screw 120 is respectively protruding from both ends of the upper end wall of the base plate 104. The third screw 120 is respectively inserted through the first insulating sheet 106, the shock-absorbing insulating rubber pad 105 and the first clamping member 102. The fourth nut 121 is respectively screwed onto the upper end of the third screw 120, which facilitates the assembly and disassembly of the base plate with the first insulating sheet 106, the shock-absorbing insulating rubber pad 105 and the first clamping member 102. The assembly is firm and reliable, which effectively improves the transformer's impact resistance.

[0030] Specifically, a mounting hole 1041 is recessed at both ends of the base plate 104 to facilitate the installation and fixing of the transformer core by bolts.

[0031] Specifically, the working principle and process of this utility model are as follows: The first screw is horizontally positioned at the upper and lower ends of the left and right sides of the silicon steel sheet, with its front and rear ends respectively passing through the first and second clamping members. A first nut is screwed onto both ends of the first screw. The second screw is vertically positioned at the left and right ends of the front and rear walls of the silicon steel sheet, with its upper and lower ends respectively passing through the first and second clamping members. A second nut is screwed onto both ends of the second screw. Fastening metal plates are positioned in the middle of the upper and lower walls of the silicon steel sheet, with both ends detachably and fixedly connected to the first and second clamping members. The fastening metal plates abut against the upper and lower walls of the silicon steel sheet, making the transformer core a single unit. This makes the assembly of the high-impact-resistant oil-immersed transformer core more convenient, quick, and reliable, with simple operation. It effectively buffers and absorbs vibrations, effectively improving the impact resistance of the oil-immersed transformer core and ensuring its performance stability and service life.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A high-impact-resistant oil-immersed transformer core, characterized in that, The device includes silicon steel sheets, a first clamping member, a second clamping member, a base plate, shock-absorbing and insulating rubber pads, a first insulating sheet, a second insulating sheet, a first screw, a first nut, a second screw, a second nut, and fastening metal plates. The silicon steel sheets are stacked. The first and second clamping members are respectively located at the front and rear ends of the upper and lower ends of the silicon steel sheets. The base plate is located on both sides of the lower end of the first clamping member. The shock-absorbing and insulating rubber pads are located at both ends of the upper wall of the base plate, with the upper walls of the pads abutting against the lower walls of the first clamping member and the silicon steel sheets. The first insulating sheets are located on the upper wall of the base plate, with their upper walls abutting against the shock-absorbing and insulating rubber pads and the silicon steel sheets. The second insulating sheets are located inside the first and second clamping members. The first screw is horizontally disposed on the upper and lower ends of the left and right sides of the silicon steel sheet, and the front and rear ends of the first screw are respectively inserted through the first clamping member and the second clamping member. The first nut is screwed on both ends of the first screw. The second screw is vertically disposed on the left and right ends of the front and rear ends of the silicon steel sheet, and the upper and lower ends of the second screw are respectively inserted through the first clamping member and the second clamping member. The second nut is screwed on both ends of the second screw. The fastening metal plate is disposed in the middle of the upper and lower ends of the silicon steel sheet, and the two ends of the fastening metal plate are detachably fixedly connected to the first clamping member and the second clamping member. The fastening metal plate abuts against the upper and lower ends of the silicon steel sheet.

2. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, It also includes a U-shaped screw and a third nut. A fixing plate is respectively protruding from the middle of the lower end wall of the first clamping member and the upper end wall of the second clamping member. A through hole is provided at both ends of the fastening metal sheet. The U-shaped screw is respectively inserted through the through hole and the two ends of the U-shaped screw are respectively inserted through the fixing plate. The third nut is respectively screwed on both ends of the U-shaped screw.

3. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, The fastening metal sheet is made of elastic cold-rolled grain-oriented silicon steel.

4. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, It also includes insulating sleeves, which are respectively sleeved on the first screw and the second screw.

5. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, It also includes lifting plates, which are respectively disposed at both ends of the upper end of the silicon steel sheet, and the two ends of the lifting plates are respectively detachably and fixedly connected to the two ends of the second clamping member by bolts, and the lifting plates are recessed with lifting holes.

6. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, Both the first clamping member and the second clamping member are made of SUS301 stainless steel.

7. The oil-immersed transformer core with high impact resistance according to claim 6, characterized in that, Both the first clamping member and the second clamping member have a C-shaped cross-section, and both the first clamping member and the second clamping member have multiple support plates vertically arranged on their outer walls.

8. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, It includes a third screw and a fourth nut. The third screw protrudes from both ends of the upper wall of the base plate. The third screw passes through the first insulating sheet, the shock-absorbing insulating rubber pad, and the first clamping member. The fourth nut is screwed onto the upper end of the third screw.

9. The oil-immersed transformer core with high impact resistance according to claim 1, characterized in that, The base plate has a mounting hole recessed at each end.

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