Seamless transformer iron core
By employing a stepped structure and interference fit fastening design, the problem of widening joints in the silicon steel sheets of the transformer core was solved, improving energy efficiency and enhancing heat dissipation performance, thus achieving stable operation of the seamless transformer core.
Patent Information
- Application Number
- CN202422806723.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The joints between the silicon steel sheets in the transformer core will widen under the influence of magnetic force, leading to loss of magnetic flux and increased energy consumption.
The iron core body adopts a stepped structure, combined with fasteners, clamping parts, tie rods and wedges. The silicon steel sheets are fixed by interference fit to prevent the joints from widening, and heat dissipation is achieved by using thermally conductive materials and ventilation holes.
It effectively prevents the joints between silicon steel sheets from widening, improves the transformer's energy efficiency, reduces losses, and enhances the heat dissipation performance of the iron core through the heat dissipation structure.
Smart Images
Figure CN223513759U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of transformer technology, and more specifically, to a seamless transformer core. Background Technology
[0002] The transformer core is the main part of a transformer. It serves as both the carrier of the magnetic circuit and the insulator of the electrical circuit. Furthermore, the transformer core increases magnetic flux density and magnetic reluctance while simultaneously reducing electromagnetic leakage.
[0003] In related technologies, a transformer core typically consists of a core body, fasteners, and insulation components. The core body is composed of multiple hot-rolled or cold-rolled silicon steel sheets with a high silicon content, stacked together. Fasteners are used to secure the silicon steel sheets, and the bottom of the core body is installed in a predetermined position using insulating pads such as feet. Generally, there are joints between adjacent silicon steel sheets; these joints are used to reduce hysteresis and contact losses in the transformer core.
[0004] However, after prolonged use, the seams between adjacent silicon steel sheets will widen due to the magnetic force. Once the seams between the silicon steel sheets become larger, magnetic flux will be lost, thereby reducing the overall energy efficiency of the transformer and increasing losses. Utility Model Content
[0005] In view of this, the present application provides a seamless transformer core to solve the problem in the related art that the seams between silicon steel sheets in the transformer core will become larger due to the magnetic force, thereby affecting the transformer's energy consumption.
[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:
[0007] A seamless transformer core, comprising:
[0008] The iron core body has multiple iron core bodies, each of which is composed of multiple silicon steel sheets stacked together, and the outer wall of the iron core body is provided with a stepped structure;
[0009] Fasteners are provided at the upper and lower ends of the iron core body and are used to clamp the plurality of silicon steel sheets.
[0010] A clamping member is located between the upper and lower fasteners. One of the walls of the clamping member is provided with a stepped groove. The clamping member contacts the stepped structure through the stepped groove. The clamping member is provided with an insertion hole along the thickness direction.
[0011] A pull rod passes through and is fixedly connected to the fastener, and a fastening bolt is provided at the end of the pull rod. The outer diameter of the pull rod is smaller than the inner diameter of the through hole.
[0012] A wedge, slidably mounted on the tie rod, with its inclined surface facing the ladder structure, and its maximum thickness matching the width of the through hole; wherein,
[0013] The wedge slides along the pull rod into the insertion hole so that the clamping member abuts against the ladder structure through the inclined surface.
[0014] In some possible implementations, a double-sided clamping member is also provided between adjacent core bodies. The two opposite walls of the double-sided clamping member are provided with the stepped grooves, and the double-sided clamping member abuts against the stepped structure through the stepped grooves.
[0015] In some possible implementations, the clamping element has a hollow structure design and is made of a thermally conductive material.
[0016] In some possible implementations, the clamping element is provided with ventilation holes communicating with its interior.
[0017] In some possible implementations, the ventilation holes are located at the edges of the trapezoidal groove.
[0018] In some possible implementations, a fan is provided on the wall of the clamping member for blowing air into the interior of the clamping member.
[0019] The seamless transformer core provided in this application has at least the following beneficial effects:
[0020] In the seamless transformer core provided in this embodiment, a tie rod is used to initially fix the silicon steel sheets with fasteners. A wedge is also slidably mounted on the tie rod, with its inclined surface facing the stepped structure of the core body. The wedge slides along the tie rod into the insertion hole of the clamping member, and the inclined surface of the wedge gradually abuts against the wall of the insertion hole until the clamping member abuts against the stepped structure of the core body, achieving an interference fit with the insertion hole. Using this structural design, the core body can be simultaneously fixed in two directions using fasteners and clamping members. Furthermore, the interference fit between the wedge and the insertion hole effectively prevents the expansion of seams between the silicon steel sheets during operation. Attached Figure Description
[0021] 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 these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of a seamless transformer core provided in an embodiment of this application;
[0023] Figure 2 An exploded view of the seamless transformer core provided in the embodiments of this application;
[0024] Figure 3 This is a schematic diagram of the structure of the clamping component for the seamless transformer core provided in the embodiments of this application.
[0025] In the picture:
[0026] 100. Iron core body; 110. Silicon steel sheet; 120. Ladder structure; 200. Fastener; 300. Clamping part; 310. Ladder groove; 320. Through hole; 400. Tie rod; 500. Fastening bolt; 600. Wedge; 610. Inclined surface; 700. Double-sided clamping part; 800. Ventilation hole. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0028] like Figures 1-3 As shown in the embodiment of this application, the seamless transformer core includes a core body 100, fasteners 200, clamping members 300, tie rods 400, and wedges 600. The core body 100 is the main structure of the transformer, and the transformer core includes multiple core bodies 100, each of which is composed of multiple stacked silicon steel sheets 110. Each silicon steel sheet 110 is cut into multiple strips of equal length and varying widths, and these strips are arranged in an alternating pattern to form a ladder structure 120 of the core. The ladder structure 120 allows the core body 100 to approach a circular shape, thereby improving the space utilization of the core body 100.
[0029] Fasteners 200 are provided at both the upper and lower ends of the core body 100. The fasteners 200 can clamp multiple silicon steel sheets 110 to form the core body 100. A clamping member 300 is also provided between the upper and lower fasteners 200. One wall surface of the clamping member 300 is provided with a stepped groove 310. The clamping member 300 contacts the stepped structure 120 of the core body 100 through the stepped groove 310. In addition, the clamping member 300 is also provided with an insertion hole 320 along the thickness direction.
[0030] In this embodiment, a pull rod 400 is fixedly disposed between the upper and lower fasteners 200. Fastening bolts 500 are provided at both ends of the pull rod 400. The pull rod 400 is used to fixably connect with the fasteners 200, so that the silicon steel sheets 110 are stacked and fixed to form the iron core body 100. Furthermore, the outer diameter of the pull rod 400 is smaller than the inner diameter of the insertion hole 320, and the pull rod 400 is simultaneously inserted into the insertion hole 320 of the clamping member 300.
[0031] A wedge 600 is slidably mounted on the pull rod 400. The wedge 600 has a structure with an inclined surface 610. The inclined surface 610 of the wedge 600 faces the stepped structure 120 of the iron core body 100, and the maximum thickness of the wedge 600 is adapted to the width of the through hole 320 of the clamping member 300. This allows the wedge 600 to enter the through hole 320 of the clamping member 300 when it moves along the pull rod 400 toward the through hole 320. As the wedge 600 gradually penetrates into the through hole 320, the inclined surface 610 of the wedge 600 gradually contacts the inner wall surface of the through hole 320, thereby abutting the clamping member 300 against the stepped structure 120. Furthermore, the wedge 600 and the through hole 320 are in an interference fit relationship.
[0032] In addition, in actual use, a fastening bolt 500 can be provided on the pull rod 400. The fastening bolt 500 is located below and abuts against the wedge block 600. The fastening bolt 500 can prevent the wedge block 600 from popping out of the through hole 320, thereby improving the clamping effect of the clamping member 300 on the silicon steel sheet 110.
[0033] In the seamless transformer core provided in this embodiment, the silicon steel sheet 110 can be initially fixed using a tie rod 400 and fasteners 200. A wedge 600 is also slidably mounted on the tie rod 400, with its inclined surface 610 facing the ladder structure 120 of the core body 100. The wedge 600 slides along the tie rod 400 into the insertion hole 320 of the clamping member 300, and its inclined surface 610 gradually abuts against the wall of the insertion hole 320 until the clamping member 300 abuts against the ladder structure 120 of the core body 100, achieving an interference fit with the insertion hole 320. Using this structural design, the core body 100 can be simultaneously fixed in two directions using fasteners 200 and clamping members 300. Meanwhile, the clamping part 300 and the iron core body 100 are fixed by interference fit between the wedge block 600 and the through hole 320, which can effectively prevent the problem of the joint between the silicon steel sheets 110 from widening during operation.
[0034] In some embodiments, a double-sided clamping member 700 is further provided between the core bodies 100, and a stepped groove 310 is provided on each of the two opposite sides of the double-sided clamping member 700. The double-sided clamping member 700 abuts against the stepped structure 120 of the core body 100 through the stepped groove 310 to ensure that the joint between the silicon steel sheets 110 does not widen.
[0035] In some embodiments, the clamping member 300 can be a hollow structure, and the clamping member 300 is supported by a thermally conductive material. The clamping member 300 can absorb the heat generated by the iron core body 100 during operation and conduct heat to achieve the purpose of heat dissipation.
[0036] Preferably, the clamping member 300 is further provided with ventilation holes 800, which are located beside the stepped groove 310 and distributed along the extending direction of the stepped groove 310. A fan is also provided beside the clamping member 300, which can ventilate the interior of the clamping member 300. The fan can blow air into the interior of the clamping member 300, and through the ventilation holes 800, blow air onto the surface of the iron core body 100 to improve the heat dissipation effect of the iron core body 100.
[0037] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0038] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0039] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0040] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0041] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0042] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).
[0043] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A seamless transformer core, characterized in that, include: The iron core body (100) has multiple iron core bodies (100), each of which is composed of multiple silicon steel sheets (110) stacked together, and the outer wall of the iron core body (100) is provided with a ladder structure (120). Fasteners (200) are provided at the upper and lower ends of the iron core body (100) and are used to clamp the plurality of silicon steel sheets (110). A clamping member (300) is located between the upper and lower fasteners (200). One of the walls of the clamping member (300) is provided with a stepped groove (310). The clamping member (300) contacts the stepped structure (120) through the stepped groove (310). The clamping member (300) is provided with an insertion hole (320) along the thickness direction. A pull rod (400) passes through the fastener (200) and is fixedly connected to it. A fastening bolt (500) is provided at the end of the pull rod (400). The outer diameter of the pull rod (400) is smaller than the inner diameter of the through hole (320). A wedge (600) is slidably disposed on the pull rod (400), the inclined surface (610) of the wedge (600) facing the ladder structure (120), and the maximum thickness of the wedge (600) is adapted to the width of the through hole (320); wherein, The wedge (600) slides along the pull rod (400) into the through hole (320) to achieve an interference fit, so that the clamping member (300) abuts against the ladder structure (120) through the inclined surface (610).
2. The seamless transformer core according to claim 1, characterized in that: A double-sided clamping member (700) is also provided between adjacent iron core bodies (100). The two opposite walls of the double-sided clamping member (700) are provided with the stepped groove (310). The double-sided clamping member (700) abuts against the stepped structure (120) through the stepped groove (310).
3. The seamless transformer core according to claim 1, characterized in that: The clamping component (300) has a hollow structure design and is made of a thermally conductive material.
4. The seamless transformer core according to claim 3, characterized in that: The clamping member (300) is provided with a ventilation hole (800) communicating with its interior.
5. The seamless transformer core according to claim 4, characterized in that: The ventilation holes (800) are located at the edges of the stepped grooves (310).
6. The seamless transformer core according to claim 5, characterized in that: A fan is provided on the wall of the clamping member (300), and the fan is used to blow air into the interior of the clamping member (300).