EI type transformer iron core
By alternately stacking silicon steel sheets in the EI core and providing semicircular slots and positioning rods, the problems of EI core offset and cumbersome assembly are solved, and stability and installation convenience are improved.
Patent Information
- Application Number
- CN202422795506.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The existing EI core is prone to deviation during use, resulting in reduced stability, and the assembly process is cumbersome, affecting the reliability and normal operation of the transformer.
By designing the alternating stacking of E-type and I-type silicon steel sheets, and setting semicircular slots and positioning rods between the sheets, combined with positioning plates, positioning sheets and screw sleeves, the friction contact area and stability are increased, and the installation process is simplified.
The stability and installation convenience of the EI core are improved, the risk of deviation is reduced, and the reliable operation of the transformer is ensured.
Smart Images
Figure CN223362938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of iron core technology, and more specifically to an EI type transformer iron core. Background Art
[0002] A transformer is a static electromagnetic device that converts and transfers electrical energy from one circuit to another. An EI transformer is a type of electronic transformer whose core is composed of a stack of E-shaped and I-shaped laminations. This is why it's called an EI transformer.
[0003] However, some existing EI cores are formed by a combination of E iron sheets and I iron sheets. However, during the use of these EI cores, the E iron sheets and the I iron sheets are offset, resulting in a decrease in the overall stability of the EI core, thereby reducing the reliability of the transformer. During operation, the iron sheets will offset each other, causing the surface of the iron sheets to wear, affecting the normal operation of the entire transformer core equipment. Generally, through holes are set on the iron sheets to cooperate with positioning rods to reinforce the entire core, but this requires high processing precision, and a slight offset of the iron sheets during assembly will hinder the setting of the positioning rods, making the installation process very cumbersome. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides an EI type transformer core.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes an EI-type iron core body, the EI-type iron core includes an E-type core and an I-type core, the E-type core is composed of E-type silicon steel sheets A and E-type silicon steel sheets B stacked alternately, the I-type core is composed of I-type silicon steel sheets A and I-type silicon steel sheets B stacked alternately, the E-type core is symmetrically provided with semicircular slots, the I-type core is symmetrically provided with semicircular slots, the semicircular slots are provided with positioning rods, and the positioning rods are provided with screw sleeves.
[0006] The utility model is further configured as follows: the E-shaped silicon steel sheet A is provided with a protruding end A, and the I-shaped silicon steel sheet A is provided with a groove end A adapted to the protruding end A.
[0007] The utility model is further configured as follows: the symmetrically arranged positioning rods are provided with positioning plates, the positioning plates are arranged on the bottom surface, and the positioning plates are provided with gasket sleeves.
[0008] The utility model is further configured as follows: the positioning rod is provided with a positioning piece with a bent end, the bent end of the positioning piece is provided with an opening, the fixed piece is provided on the upper end surface, and the opening is provided with a bolt and nut.
[0009] The utility model is further configured as follows: the semicircular groove is frosted.
[0010] To sum up, the utility model has the following beneficial effects: the utility model increases the contact area between the E-type core and the I-type core by alternately stacking I-type silicon steel sheets and E-type silicon steel sheets of different designs, thereby increasing the friction coefficient between the E-type core and the I-type core, and can obtain a larger maximum static friction under the same pressure conditions, thereby reducing the occurrence of offset between the E-type core and the I-type core, and improving the stability of the utility model; by setting a semicircular semicircular groove, the utility model is reinforced by the cooperation of the semicircular groove and the positioning rod, so that a slight offset of the iron chip during installation will not affect the installation, making the installation of the utility model very simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of this embodiment;
[0012] Figure 2 This is an exploded view of this embodiment;
[0013] Figure numerals: 1, E-type core; 11, E-type silicon steel sheet A; 111, raised end A; 12, E-type silicon steel sheet B; 2, I-type core; 21, I-type silicon steel sheet A; 211, groove end A; 22, I-type silicon steel sheet B; 3, semicircular slot; 4, positioning rod; 41, screw sleeve; 42, positioning plate; 421, washer sleeve; 5, positioning plate; 51, bolt and nut. DETAILED DESCRIPTION
[0014] The present invention will be described in further detail below with reference to the accompanying drawings.
[0015] This embodiment discloses an EI type transformer core, such as Figures 1 to 2 As shown, it includes an EI type iron core body, which includes an E type core 1 and an I type core 2. The E type core 1 is composed of E type silicon steel sheets A11 and E type silicon steel sheets B12 stacked alternately, and the I type core 2 is composed of I type silicon steel sheets A21 and I type silicon steel sheets B22 stacked alternately. The E type core 1 is symmetrically provided with semicircular slots 3, and the I type core 2 is symmetrically provided with semicircular slots 3. The semicircular slots 3 are provided with positioning rods 4, and the positioning rods 4 are provided with screw sleeves 41. By setting the positioning rod 4 to limit the position between the stacked silicon steel sheets, the setting of the semicircular groove 3 of the silicon steel sheet enables the new silicon steel sheet to cooperate with the positioning rod 4, and can be assembled when the silicon steel sheets are not fully aligned and there is a slight offset, so that the setting of the positioning rod 4 is very convenient, simple, fast and more flexible; the setting of the screw sleeve 41 gives the stacked iron sheets vertical pressure, so that a larger maximum static friction is obtained between the silicon steel sheets at each level, making the installation of the E-type core 1 and the I-type core 2 stable and reliable.
[0016] Further improvement, the E-type silicon steel sheet A11 is provided with a raised end A111, and the I-type silicon steel sheet A21 is provided with a groove end A211 adapted to the raised end A111. The adapted raised end A111 and groove end A211 cooperate with each other, so that the E-type silicon steel sheet A11 and the I-type silicon steel sheet A can be stably matched together. At the same time, the provision of the raised end A111 increases the friction contact area between the E-type core 1 and the I-type core 2, and a larger maximum static friction can be obtained under the same pressure conditions, reducing the occurrence of offset between the E-type core 1 and the I-type core 2 and increasing the maximum static friction between the E-type core 1 and the I-type core 2, so that the connection between the new E-type core 1 and the I-type core 2 is effective, reliable, and not easy to offset.
[0017] Further improvement, the symmetrically arranged positioning rods 4 are provided with positioning plates 42, which are arranged on the bottom surface and provided with gasket sleeves 421. The arrangement of the positioning plates 42 can simply and effectively control the distance between the positioning rods 4, and the arrangement of the gasket sleeves 421 ensures that the connection between the positioning rods 4 and the positioning plates 42 is stable and does not move.
[0018] Further improvement, the positioning rod 4 is provided with a positioning piece 5 with a bent end, the bent end of the positioning piece 5 is provided with an opening, the fixed piece is provided on the upper end surface, and the opening is provided with a bolt and nut 51. The provided bolt and nut 51 can simply and effectively control the distance between the positioning pieces 5, realize the control of the positioning rod 4, so that the positioning rod 4 clamps the stacked silicon steel sheets to prevent them from sliding, so that the positioning rod 4 can tighten the E-type core 1 and the I-type core 2, so that the cooperation of the new E-type core 1 and the I-type core 2 is stable and reliable and not easy to deviate during operation.
[0019] Further improvement, the semicircular slot 3 is subjected to frosting treatment. The roughness of the semicircular slot 3 is improved by frosting, so that the positioning rod 4 provided on the semicircular slot 3 and the semicircular slot 3 can be reliably and tightly connected together.
[0020] Working principle of the utility model
[0021] During installation of the present invention, the positioning rod 4 is passed through the positioning plate 42, and the E-type silicon steel sheet A11 and the E-type silicon steel sheet B12 are stacked alternately to obtain an E-type core 1, and the I-type silicon steel sheet A21 and the I-type silicon steel sheet B22 are stacked alternately to obtain an I-type core 2. The semicircular slot 3 and the positioning rod 4 are simply matched, making the process of stacking the silicon steel sheets very convenient. The positioning piece 5 is passed through the positioning rod 4, and the positioning piece 5 can be tightened by the bolt and nut 51 to tighten the positioning rod 4 to reinforce the stacked silicon steel sheets. The E-type core 1 and the I-type core 2 are combined together, and the combination of the positioning piece 5 and the bolt and nut 51 is used to increase the stability between the E-type core 1 and the I-type core 2. The set screw sleeve 41 is tightened to complete the assembly.
[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.
Claims
1. An EI type transformer core, comprising an EI type core body, characterized in that: The EI-type iron core body comprises an E-type core (1) and an I-type core (2); the E-type core (1) is composed of E-type silicon steel sheets A (11) and E-type silicon steel sheets B (12) stacked alternately; the I-type core (2) is composed of I-type silicon steel sheets A (21) and I-type silicon steel sheets B (22) stacked alternately; the E-type core (1) is symmetrically provided with semicircular slots (3); the I-type core (2) is symmetrically provided with semicircular slots (3); the semicircular slots (3) are provided with positioning rods (4); and the positioning rods (4) are provided with screw sleeves (41).
2. The EI type transformer core according to claim 1, characterized in that: The E-type silicon steel sheet A (11) is provided with a convex end A (111), and the I-type silicon steel sheet A (21) is provided with a groove end A (211) adapted to the convex end A (111).
3. The EI type transformer core according to claim 1, characterized in that: The symmetrically arranged positioning rods (4) are provided with positioning plates (42), the positioning plates (42) are arranged on the bottom surface, and the positioning plates (42) are provided with gasket sleeves 421.
4. The EI type transformer core according to claim 1, characterized in that: The positioning rod (4) is provided with a positioning piece (5) with a bent end, the bent end of the positioning piece (5) is provided with an opening, the positioning piece (5) is arranged on the upper end surface, and the opening is provided with a bolt and nut (51).
5. The EI type transformer core according to claim 1, characterized in that: The semicircular slot (3) is frosted.