Transformer with iron core capable of reducing eddy current loss

Abstract

The utility model discloses a transformer with an iron core capable of reducing eddy current loss, and belongs to the technical field of transformer iron cores, the transformer comprises a lower iron core, two lower supporting pieces, two upper supporting pieces, three U-shaped pieces and six bolts, a supporting seat is fixedly connected between the two lower supporting pieces, the top of the supporting seat is provided with a placement groove matched with the lower iron core, and the upper supporting pieces are fixedly connected with the lower iron core. The bottom of the lower iron core is located in the containing groove, the top of the lower iron core is located between the two upper supporting pieces, and each upper supporting piece is provided with six through holes. The lower part of the lower iron core can be extruded and placed in the placing groove formed in the top of the supporting seat, the U-shaped piece is inserted into and penetrates through the through holes of the two upper supporting pieces, so that the U-shaped piece is clamped on the lower iron core, and then the bolt is screwed into the semicircular threaded hole I and the semicircular threaded hole II, so that the lower iron core and the upper supporting pieces can be mounted and fixed; and the installation accuracy and stability of the lower iron core are improved.

Description

Technical Field

[0001] The present application relates to the technical field of transformer cores, and in particular to a transformer with a core capable of reducing eddy current losses. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. The iron core is an important structure inside the transformer, which is set in the transformer housing and used for the winding.

[0003] The patent document with the published announcement number CN212783030U provides a transformer core that can reduce eddy current loss. This published patent document locks and fixes the yoke column itself through a locking sleeve, which can prevent the laminations on the yoke column from loosening, and can also make the silicon steel sheets and amorphous alloy powders at the through-hole position fully contact, thereby ensuring the overall magnetic conductivity of the yoke column; however, the above-mentioned published patent document lacks the positioning and installation of the core and the upper and lower support parts, resulting in reduced accuracy and stability of the core installation. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present application provides a transformer with an iron core that can reduce eddy current losses, which overcomes the deficiencies of the prior art and aims to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a transformer with an iron core that can reduce eddy current losses, comprising a lower iron core, two lower support members, two upper support members, three U-shaped members and six bolts, wherein a support seat is fixedly connected between the two lower support members, a placement groove matching the lower iron core is provided on the top of the support seat, and the bottom of the lower iron core is located inside the placement groove, and the top of the lower iron core is located between the two upper support members, and six through holes are provided on each of the upper support members, and a semicircular threaded hole 1 is provided on the inner wall of the front through hole, the U-shaped member is adapted to the through hole, and a semicircular threaded hole 2 is symmetrically provided on the front side of the inner wall on both sides of the U-shaped member, and the semicircular threaded hole 1 and the semicircular threaded hole 2 are adapted to the bolts.

[0006] By adopting the above technical solution, a placement groove matching the lower iron core is opened on the top of the support seat, which can be used to squeeze the lower part of the lower iron core into the placement groove. The U-shaped part is inserted into and passed through the through holes of the two upper support parts, so that the U-shaped part is stuck on the lower iron core, and then the bolts are screwed into the semicircular threaded hole one and the semicircular threaded hole two, so that the lower iron core and the upper support parts can be installed and fixed, thereby increasing the accuracy and stability of the installation of the lower iron core.

[0007] As a preferred technical solution of the present application, a matching upper core is arranged on the top of the lower core, and the bottom of the upper core is located between the two upper support members. The lower core is composed of a plurality of lower silicon steel sheets, and the upper core is composed of a plurality of upper silicon steel sheets. The outer wall of the lower silicon steel sheet is sprayed with an insulating layer.

[0008] By adopting the above technical solution, the lower iron core composed of multiple layers of lower silicon steel sheets and the upper iron core composed of multiple layers of upper silicon steel sheets, and the insulating layer between each layer of lower silicon steel sheets, can effectively prevent the generation of magnetically induced eddy currents inside the iron core, thereby reducing eddy current losses.

[0009] As a preferred technical solution of the present application, the number of the lower silicon steel sheets is equal to the number of the upper silicon steel sheets, and each of the lower silicon steel sheets corresponds one-to-one to each of the upper silicon steel sheets.

[0010] By adopting the above technical solution, each lower silicon steel sheet corresponds to each upper silicon steel sheet.

[0011] As a preferred technical solution of the present application, six positioning holes are opened on the lower iron core, and three windings are sleeved on the lower iron core. Positioning rods pass through the interior of the positioning holes, and each of the windings is located between two vertical positioning rods.

[0012] By adopting the above technical solution, the winding sleeved on the lower iron core can be positioned by the positioning rod to prevent the winding from vertically deviating.

[0013] As a preferred technical solution of the present application, both sides of the bottom of the two lower support members are fixedly connected with a base plate, two threaded shafts penetrate the base plate, the upper ends of the threaded shafts are fixedly connected with a rotating wheel, and the lower ends of the threaded shafts are fixedly installed with a foot pad, and the threaded shafts are connected to the base plate by threads.

[0014] By adopting the above technical solution, both sides of the bottom of the two lower support members are fixedly connected with a base plate, two threaded shafts penetrate the base plate, the upper ends of the threaded shafts are fixedly connected with a rotating wheel, and the lower ends of the threaded shafts are fixedly installed with a foot pad, and the threaded shafts and the base plate are connected by threads; the threaded shafts can be driven to rotate by rotating the rotating wheel, and the threaded shafts can drive the foot pads to move in the vertical direction, so that the iron core remains horizontal in the transformer housing.

[0015] As a preferred technical solution of the present application, both sides of the top of the upper support member are fixedly connected with hanging rods, and hanging holes are opened on the hanging rods.

[0016] By adopting the above technical solution, the transformer core can be easily lifted through the lifting holes opened on the lifting rod.

[0017] Beneficial effects of this application:

[0018] 1. The placement groove opened on the top of the support seat can be used for squeezing and placing the lower part of the lower iron core. By inserting the U-shaped piece through the through holes of the two upper support pieces, the U-shaped piece is stuck on the lower iron core, and then the bolts are screwed into the semicircular threaded hole 1 and the semicircular threaded hole 2, the lower iron core can be installed and fixed to the upper support piece, thereby increasing the accuracy and stability of the installation of the lower iron core.

[0019] 2. The lower iron core composed of multiple layers of lower silicon steel sheets and the upper iron core composed of multiple layers of upper silicon steel sheets, and the insulating layer between each layer of lower silicon steel sheets, can effectively prevent the generation of magnetically induced eddy current inside the iron core, thereby reducing eddy current loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the lower iron core and the upper iron core of this application;

[0022] Figure 3 A cross-sectional view of a silicon steel sheet from the front view of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the support member under this application;

[0024] Figure 5 This is a schematic diagram of the structure of the support member in this application.

[0025] Figure 6 For this application Figure 5 A is an enlarged view of the middle image.

[0026] Figure 7 For this application Figure 5 Enlarged view of B.

[0027] In the figure: 1. lower iron core; 2. upper iron core; 3. lower support member; 4. upper support member; 5. winding; 6. positioning rod; 7. suspension rod; 8. suspension hole; 9. base plate; 10. lower silicon steel sheet; 11. upper silicon steel sheet; 12. positioning hole; 13. insulating layer; 14. support seat; 15. placement groove; 16. threaded shaft; 17. runner; 18. foot pad; 19. through hole; 20. U-shaped member; 21. bolt; 22. semicircular threaded hole one; 23. semicircular threaded hole two. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , a transformer with an iron core capable of reducing eddy current loss, comprising a lower iron core 1, two lower supports 3, two upper supports 4, three U-shaped members 20 and six bolts 21, a support seat 14 is fixedly connected between the two lower supports 3, a placement groove 15 matching the lower iron core 1 is provided on the top of the support seat 14, and the bottom of the lower iron core 1 is located inside the placement groove 15, the top of the lower iron core 1 is located between the two upper supports 4, six through holes 19 are provided on each upper support 4, a semicircular threaded hole 22 is provided on the inner wall of the front through hole 19, the U-shaped member 20 is adapted to the through hole 19, and the two ends of the U-shaped member 20 are connected to the through hole 19. Semicircular threaded holes 23 are symmetrically provided on the front side of the inner wall, and the semicircular threaded holes 1 and 23 are both compatible with the bolts 21; a placement groove 15 matching the lower iron core 1 is provided through the top of the support seat 14, which can be used to squeeze the lower part of the lower iron core 1 into the placement groove 15, and the U-shaped part 20 is inserted into and passed through the through holes 19 of the two upper support members 4, so that the U-shaped part 20 is stuck on the lower iron core 1, and then the bolts 21 are screwed into the semicircular threaded holes 1 and 23, so that the lower iron core 1 can be installed and fixed to the upper support member 4, thereby increasing the accuracy and stability of the installation of the lower iron core 1.

[0030] Reference Figure 1-3 A matching upper core 2 is arranged on the top of the lower core 1, and the bottom of the upper core 2 is between two upper supports 4. The lower core 1 is composed of multiple lower silicon steel sheets 10, and the upper core 2 is composed of multiple upper silicon steel sheets 11. The outer wall of the lower silicon steel sheet 10 is sprayed with an insulating layer 13; the lower core 1 composed of multiple layers of lower silicon steel sheets 10 and the upper core 2 composed of multiple layers of upper silicon steel sheets 11, and the insulating layer 13 between each layer of lower silicon steel sheets 10 can effectively prevent the generation of magnetically induced eddy current inside the core, thereby reducing eddy current loss.

[0031] Reference Figure 2 The number of lower silicon steel sheets 10 and upper silicon steel sheets 11 is equal, and each lower silicon steel sheet 10 corresponds to each upper silicon steel sheet 11 one by one; each lower silicon steel sheet 10 corresponds to each upper silicon steel sheet 11.

[0032] Reference Figure 1 and Figure 3 Six positioning holes 12 are provided on the lower iron core 1, and three windings 5 ​​are sleeved on the lower iron core 1. Positioning rods 6 pass through the interior of the positioning holes 12, and each winding 5 is located between two vertical positioning rods 6; the winding 5 sleeved on the lower iron core 1 can be positioned by the positioning rods 6 to prevent the winding 5 from vertically deviating.

[0033] Reference Figure 1 and Figure 4 Both sides of the bottom of the two lower support members 3 are fixedly connected with a base plate 9, and two threaded shafts 16 are passed through the base plate 9. The upper end of the threaded shaft 16 is fixedly connected with a rotating wheel 17, and the lower end of the threaded shaft 16 is fixedly installed with a foot pad 18. The threaded shaft 16 is connected to the base plate 9 through a thread; by rotating the rotating wheel 17, the threaded shaft 16 can be driven to rotate, and the threaded shaft 16 can drive the foot pad 18 to move in the vertical direction, so that the iron core remains horizontal in the transformer housing.

[0034] Reference Figure 1 Both sides of the top of the upper support member 4 are fixedly connected with a suspension rod 7, and a suspension hole 8 is opened on the suspension rod 7; the suspension hole 8 opened on the suspension rod 7 facilitates the lifting of the transformer core.

[0035] Working principle: During the installation process, first squeeze the lower part of the lower core 1 into the placement groove 15, then insert the U-shaped piece 20 and pass through the through holes 19 of the two upper support members 4, so that the U-shaped piece 20 is stuck on the lower core 1, and then screw the bolt 21 into the semicircular threaded hole 1 22 and the semicircular threaded hole 23, so that the lower core 1 and the upper support member 4 can be installed and fixed, thereby increasing the accuracy and stability of the installation of the lower core 1;

[0036] During the installation of the winding 5, firstly, the lower positioning rod 6 is passed through the lower positioning hole 12, then the winding 5 is sleeved on the lower core 1, and then the upper positioning rod 6 is passed through the upper positioning hole 12 to prevent the winding 5 from vertically deviating;

[0037] In addition, the lower core 1 composed of multiple layers of lower silicon steel sheets 10 and the upper core 2 composed of multiple layers of upper silicon steel sheets 11, and the insulating layer 13 between each layer of lower silicon steel sheets 10 can effectively prevent the generation of magnetically induced eddy currents inside the core, thereby reducing eddy current losses.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A transformer with an iron core capable of reducing eddy current losses, comprising a lower iron core (1), two lower support members (3), two upper support members (4), three U-shaped members (20) and six bolts (21), characterized in that: A support seat (14) is fixedly connected between the two lower support members (3); a placement groove (15) matching the lower iron core (1) is provided on the top of the support seat (14); the bottom of the lower iron core (1) is located inside the placement groove (15); the top of the lower iron core (1) is located between the two upper support members (4); six through holes (19) are provided on each of the upper support members (4); a semicircular threaded hole (22) is provided on the inner wall of the front through hole (19); the U-shaped member (20) is matched with the through hole (19); and semicircular threaded holes (23) are symmetrically provided on the front side of the inner walls of both sides of the U-shaped member (20); the semicircular threaded holes (22) and the semicircular threaded holes (23) are matched with the bolts (21).

2. The transformer with an iron core capable of reducing eddy current loss according to claim 1, characterized in that: A matching upper core (2) is arranged on the top of the lower core (1), and the bottom of the upper core (2) is located between the two upper support members (4); the lower core (1) is composed of a plurality of lower silicon steel sheets (10), and the upper core (2) is composed of a plurality of upper silicon steel sheets (11); and the outer walls of the lower silicon steel sheets (10) are sprayed with an insulating layer (13).

3. The transformer with an iron core capable of reducing eddy current loss according to claim 2, characterized in that: The number of the lower silicon steel sheets (10) and the number of the upper silicon steel sheets (11) are equal, and each of the lower silicon steel sheets (10) corresponds one-to-one to each of the upper silicon steel sheets (11).

4. The transformer with an iron core capable of reducing eddy current loss according to claim 1, characterized in that: The lower iron core (1) is provided with six positioning holes (12), and three windings (5) are sleeved on the lower iron core (1). Positioning rods (6) pass through the interior of the positioning holes (12), and each winding (5) is located between two vertical positioning rods (6).

5. The transformer with an iron core capable of reducing eddy current loss according to claim 1, characterized in that: Both sides of the bottom of the two lower support members (3) are fixedly connected to a base plate (9), two threaded shafts (16) penetrate the base plate (9), the upper ends of the threaded shafts (16) are fixedly connected to a rotating wheel (17), and the lower ends of the threaded shafts (16) are fixedly mounted with a foot pad (18), and the threaded shafts (16) are connected to the base plate (9) by threads.

6. The transformer with an iron core capable of reducing eddy current loss according to claim 1, characterized in that: Both sides of the top of the upper support member (4) are fixedly connected to suspension rods (7), and the suspension rods (7) are provided with suspension holes (8).

Images