Novel transformer oil tank shielding structure

Abstract

The utility model relates to the technical field of transformers, in particular to a novel transformer oil tank shielding structure. According to the technical scheme, the oil tank comprises an oil tank body, fixing blocks, sliding blocks and screws, a sliding rail is installed on one side of the lower end of the inner wall of the oil tank body, the sliding blocks distributed in parallel at equal intervals are slidably installed on the outer wall of the upper end of the sliding rail, the fixing blocks are installed on the outer walls of the two sides of each sliding block, and supporting plates are arranged on the outer walls of the upper ends of the fixing blocks; a magnetic shielding device is arranged on the outer wall of the upper end of the supporting plate, screws are installed on the two sides of the outer wall of the lower end of the supporting plate, and by arranging the sliding blocks, the magnetic shielding device and the screws, the effect of improving leakage flux distribution is achieved, leakage flux is attracted to enter the transverse magnetic shielding device, stray losses are reduced, and the overheating phenomenon of structural parts is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a novel transformer oil tank shielding structure. Background Art

[0002] The transformer oil tank (corrugated oil tank) is filled with oil, but the oil in the transformer oil pillow cannot be too full. The oil tank and the oil pillow are connected by a pipeline. When the oil tank is short of oil, the oil in the oil pillow will flow down the pipeline and replenish the oil tank to keep it full of oil; at the same time, when the transformer load increases, the oil temperature rises, the transformer oil expands, and the oil tank cannot hold it, it will also flow up the pipeline and flow back to the oil pillow, and the transformer is installed inside the transformer oil tank.

[0003] Patent announcement number CN209266155U discloses a horizontal transformer oil tank, including a transformer oil tank body, a transformer body placed in the oil tank body, two support frames for placing the transformer body, a number of limit columns for limiting the displacement of the support frames, and two sets of clamps for clamping the transformer body. The two support frames are respectively located at the two ends of the transformer body, and the support frames are movably limited in the oil tank body by limit columns that are arranged on the bottom and side walls of the oil tank body. Fixed frames are provided on the left and right sides above the panel of the support frame, and the two ends of the transformer body are clamped by clamps respectively, and fixed to their corresponding fixed frames by connecting bolts. The transformer body of the utility model is more flexible to assemble, and the relative position of the support frame and the oil tank is adjusted and then fixed, so as to ensure the reliable connection between the body and the support frame, and at the same time reduce the risk of multi-point grounding of the transformer.

[0004] Although the prior art CN209266155U has many benefits during use, it still has the following problems: as the capacity of the generator transformer continues to increase, the leakage flux increases accordingly, and the stray loss of the steel structure continues to increase, which seriously affects the performance indicators of the generator transformer. Therefore, reducing the stray loss as much as possible has become a top priority for the generator transformer. Utility Model Content

[0005] The purpose of the utility model is to provide a novel transformer oil tank shielding structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel transformer oil tank shielding structure, comprising an oil tank body, a fixed block, a slider and a screw, a slide rail is installed on one side of the lower end of the inner wall of the oil tank body, and sliders equidistantly distributed in parallel are slidably installed on the outer wall of the upper end of the slide rail, fixed blocks are installed on the outer walls on both sides of the slider, a support plate is provided on the outer wall of the upper end of the fixed block, a magnetic shielding device is provided on the outer wall of the upper end of the support plate, and screws are installed on both sides of the outer wall of the lower end of the support plate.

[0007] When using a new transformer oil tank shielding structure in the present technical solution, the staff manually moves the slider to the lower end of the body of the device, and the staff takes a wrench to rotate the bolt so that the bolt squeezes the slide rail to ensure the position stability of the slider at the upper end of the slide rail. Then the staff takes a wrench to rotate the nut to ensure the position stability of the magnetic shielding device through the screw and the support plate.

[0008] Preferably, a body is provided at the upper end of the inner wall of the oil tank body, and the body corresponds to the position of the slider. The body changes the AC voltage by the principle of electromagnetic induction.

[0009] Preferably, a bolt is threadedly connected to the inside of the slider, and the bolt passes through one end of the slider and contacts the outer wall of the slide rail. The bolt squeezes the slide rail to ensure the stability of the position of the slider at the upper end of the slide rail.

[0010] Preferably, the magnetic shielding device is provided with equidistant and parallel silicon steel sheets inside, and an insulating paperboard is provided between the magnetic shielding device and the support plate. The insulating paperboard can insulate and protect the magnetic shielding device, and the silicon steel sheets can form a magnetic shunt.

[0011] Preferably, a through hole is provided inside the fixing block, and the screw is located inside the through hole.

[0012] Preferably, a nut is threadedly connected to an outer wall of one side of the screw rod, and the nut is located at the lower end of the fixing block. The screw rod and the nut fix the support plate to ensure that the support plate is located on the fixing block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of improving the leakage magnetic distribution by setting a slider, a magnetic shielding device and a screw. The staff manually moves the slider to the lower end of the device body, and the staff takes a wrench to rotate the bolt so that the bolt squeezes the slide rail to ensure the position stability of the slider at the upper end of the slide rail. Then the staff takes a wrench to rotate the nut, and the position stability of the magnetic shielding device is ensured by the screw and the support plate, thereby improving the leakage magnetic distribution, attracting the leakage magnetic flux into the horizontal magnetic shielding device, reducing stray losses, and effectively reducing the overheating of the structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the fuel tank body structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the oil tank body structure of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of the slider structure of the utility model;

[0017] Figure 4It is a schematic cross-sectional view of the slider structure of the utility model.

[0018] In the figure: 1. oil tank body; 11. device body; 12. slide rail; 13. slider; 14. bolt; 2. fixing block; 21. support plate; 22. magnetic shielding device; 23. screw; 24. nut. 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] See also Figure 1-Figure 4 , the utility model provides two embodiments:

[0021] Embodiment 1: A novel transformer oil tank shielding structure comprises an oil tank body 1, a fixed block 2, a slider 13 and a screw 23, a slide rail 12 is installed on one side of the lower end of the inner wall of the oil tank body 1, and sliders 13 equidistantly distributed in parallel are slidably installed on the outer wall of the upper end of the slide rail 12, and the outer walls on both sides of the slider 13 are installed with fixed blocks 2, the outer wall of the upper end of the fixed block 2 is provided with a support plate 21, the outer wall of the upper end of the support plate 21 is provided with a magnetic shielding device 22, and screws 23 are installed on both sides of the outer wall of the lower end of the support plate 21.

[0022] The upper end of the inner wall of the oil tank body 1 is provided with a body 11, and the body 11 corresponds to the position of the slider 13. The body 11 changes the AC voltage by the principle of electromagnetic induction.

[0023] Embodiment 2: A novel transformer oil tank shielding structure comprises an oil tank body 1, a fixed block 2, a slider 13 and a screw 23. A slide rail 12 is installed on one side of the lower end of the inner wall of the oil tank body 1, and sliders 13 equidistantly distributed in parallel are slidably installed on the outer wall of the upper end of the slide rail 12. Fixed blocks 2 are installed on the outer walls of both sides of the slider 13. A support plate 21 is provided on the outer wall of the upper end of the fixed block 2. A magnetic shielding device 22 is provided on the outer wall of the upper end of the support plate 21. The magnetic shielding device 22 adopts a horizontal through-length structure, so that the leakage magnetic generated by the coil air channel forms a magnetic shunt on the inner wall of the oil tank body 1, thereby improving the leakage magnetic distribution and effectively reducing stray losses. Screws 23 are installed on both sides of the outer wall of the lower end of the support plate 21.

[0024] The upper end of the inner wall of the oil tank body 1 is provided with a body 11, and the body 11 corresponds to the position of the slider 13. The body 11 changes the AC voltage by the principle of electromagnetic induction.

[0025] The slider 13 is internally threaded with a bolt 14, which passes through one end of the slider 13 and contacts the outer wall of the slide rail 12. The bolt 14 squeezes the slide rail 12 to ensure the stability of the position of the slider 13 at the upper end of the slide rail 12. The staff manually moves the slider 13 to move the slider 13 to the lower end of the device body 11, and the staff takes a wrench to rotate the bolt 14, so that the bolt 14 squeezes the slide rail 12 to ensure the stability of the position of the slider 13 at the upper end of the slide rail 12.

[0026] The magnetic shielding device 22 is provided with equidistant and parallel silicon steel sheets inside, which can form a magnetic shunt, improve the magnetic flux distribution, draw magnetic lines into the horizontal magnetic shielding device, reduce stray losses in the structural parts, effectively reduce the overheating of the structural parts, improve product performance, and save manufacturing costs. An insulating cardboard is provided between the magnetic shielding device 22 and the support plate 21. The insulating cardboard can insulate and protect the magnetic shielding device 22, and the silicon steel sheets can form a magnetic shunt.

[0027] A through hole is formed inside the fixing block 2, and the screw rod 23 is located inside the through hole.

[0028] The outer wall of one side of the screw rod 23 is threadedly connected with a nut 24, and the nut 24 is located at the lower end of the fixed block 2. The screw rod 23 and the nut 24 fix the support plate 21 to ensure that the support plate 21 is located at the fixed block 2. The staff takes a wrench to rotate the nut 24, and the position stability of the magnetic shielding device 22 is ensured through the screw rod 23 and the support plate 21, the leakage magnetic flux distribution is improved, and the leakage magnetic flux is attracted to enter the horizontal magnetic shielding device 22, thereby reducing stray losses and effectively reducing the overheating of the structural parts.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A novel transformer oil tank shielding structure, comprising an oil tank body (1), a fixing block (2), a sliding block (13) and a screw rod (23), characterized in that: A slide rail (12) is installed on one side of the lower end of the inner wall of the oil tank body (1), and sliding blocks (13) are slidably installed on the outer wall of the upper end of the slide rail (12) and are distributed in parallel at equal distances. Fixed blocks (2) are installed on the outer walls of both sides of the sliding blocks (13), and a support plate (21) is provided on the outer wall of the upper end of the fixed block (2). A magnetic shielding device (22) is provided on the outer wall of the upper end of the support plate (21), and screws (23) are installed on both sides of the outer wall of the lower end of the support plate (21).

2. A novel transformer oil tank shielding structure according to claim 1, characterized in that: The upper end of the inner wall of the oil tank body (1) is provided with a body (11), and the body (11) corresponds to the position of the slider (13).

3. The novel transformer oil tank shielding structure according to claim 1 is characterized in that: The slider (13) is internally threadedly connected with a bolt (14), and one end of the bolt (14) passes through the slider (13) and contacts the outer wall of the slide rail (12).

4. The novel transformer oil tank shielding structure according to claim 1 is characterized in that: The magnetic shielding device (22) is provided with silicon steel sheets that are equidistantly and parallelly distributed inside, and an insulating paperboard is provided between the magnetic shielding device (22) and the support plate (21).

5. The novel transformer oil tank shielding structure according to claim 1 is characterized in that: A through hole is provided inside the fixing block (2), and the screw rod (23) is located inside the through hole.

6. The novel transformer oil tank shielding structure according to claim 1 is characterized in that: A nut (24) is threadedly connected to an outer wall of one side of the screw rod (23), and the nut (24) is located at the lower end of the fixing block (2).

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