CN104575974B - Transformer core positioning structure and method - Google Patents
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- CN104575974B CN104575974B CN201410837776.9A CN201410837776A CN104575974B CN 104575974 B CN104575974 B CN 104575974B CN 201410837776 A CN201410837776 A CN 201410837776A CN 104575974 B CN104575974 B CN 104575974B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000004080 punching Methods 0.000 claims abstract description 16
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 13
- 238000009415 formwork Methods 0.000 claims abstract 3
- 238000003475 lamination Methods 0.000 claims description 11
- 230000004907 flux Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
本发明提供一种变压器铁心定位结构及其定位方法，包括铁心和工装靠模，所述铁心上端设有上轭，所述铁心的下端设有下轭，所述铁心的左右两侧分别设有边柱，所述铁心的中部设有中柱，所述边柱与所述中柱平行，所述边柱与所述上轭、下轭垂直，所述上轭、下轭、边柱、中柱上设有定位孔，所述定位孔为三角形状，所述工装靠模端部为三角形状，且与所述三角形定位孔吻合。通过对传统铁心工艺定位孔改革，将圆形的铁心中间工艺孔变为硅钢片边缘的三角形工艺定位孔，使得铁心冲孔的截面积减小80％，铁心冲孔主磁通的衍射尺寸随之减小，铁心工艺孔处局部磁密升高的现象可以得到缓解，铁心损耗、空载电流值及噪音水平值能够得到有效改善。
The invention provides a transformer core positioning structure and its positioning method, including a core and tooling formwork, the upper end of the iron core is provided with an upper yoke, the lower end of the iron core is provided with a lower yoke, and the left and right sides of the iron core are respectively provided with A side column, a center column is arranged in the middle of the iron core, the side column is parallel to the center column, the side column is perpendicular to the upper yoke and the lower yoke, and the upper yoke, the lower yoke, the side column, the center column A positioning hole is provided on the column, and the positioning hole is triangular in shape, and the end of the tooling formwork is in a triangular shape and coincides with the triangular positioning hole. Through the reform of the traditional core process positioning hole, the circular core process hole is changed into a triangular process positioning hole on the edge of the silicon steel sheet, so that the cross-sectional area of the core punching hole is reduced by 80%, and the diffraction size of the main magnetic flux of the core punching hole changes with The reduction of the local magnetic density at the core process hole can be alleviated, and the core loss, no-load current value and noise level can be effectively improved.
Description
技术领域technical field
本发明涉及变压器铁心结构的技术领域，具体涉及一种变压器铁心定位结构及其定位方法。The invention relates to the technical field of transformer core structures, in particular to a transformer core positioning structure and a positioning method thereof.
背景技术Background technique
随着变压器行业技术的不断发展，变压器的性能水平要求越来越高，高效节能是变压器发展的主要趋势。目前，国内外的市场竞争日趋白热化，人力资源成本也越来越高，如何提高劳动生产率是变压器制造企业的主攻方向之一，在我国变压器制造企业中，铁心的叠片还主要是靠人力来完成，且主流的长圆形铁心结构叠片厚度大，人工叠片工时数就多，不仅影响了生产进度，也增加了劳动力成本。为了提高铁心叠片效率，往往在铁心上增加工艺孔，如图1所示，这样可以减少修整铁心的时间，但铁心增加了工艺孔后其有效导磁截面积也随之减小，根据工艺孔的尺寸其影响也不尽相同，对变压器声级水平、空载损耗及空载励磁电流等参数有一定的影响。解决办法为：可以增加铁心直径即增加硅钢片的耗材来降低磁通密度，这样硅钢片的单位损耗等参数会得到改善；另外比如增加硅钢片接缝级数、提高硅钢片的性能牌号或通过一片一叠的方式来优化叠片工艺系数等，但这些措施都是要增加材料或人力资源成本的。所以，如何改善现有的铁心叠片工艺孔，来提高生产效率是技术研发人员及企业经理人所面临的问题。With the continuous development of transformer industry technology, the performance level of transformers is getting higher and higher, and high efficiency and energy saving are the main trends in the development of transformers. At present, the market competition at home and abroad is becoming increasingly fierce, and the cost of human resources is also getting higher and higher. How to improve labor productivity is one of the main directions of transformer manufacturing enterprises. In my country's transformer manufacturing enterprises, the lamination of iron cores is mainly done by manpower. In addition, the mainstream oblong iron core structure has a large lamination thickness, which requires many man-hours for manual lamination, which not only affects the production schedule, but also increases labor costs. In order to improve the efficiency of core lamination, process holes are often added to the core, as shown in Figure 1, which can reduce the time for trimming the core, but the effective magnetic cross-sectional area of the core will also decrease after the process holes are added. According to the process The size of the hole has different effects, and has certain effects on parameters such as transformer sound level, no-load loss and no-load excitation current. The solution is: increase the diameter of the core, that is, increase the consumables of the silicon steel sheet to reduce the magnetic flux density, so that the parameters such as the unit loss of the silicon steel sheet will be improved; in addition, such as increasing the number of joints of the silicon steel sheet, improving the performance grade of the silicon steel sheet or passing One by one way to optimize the lamination process coefficient, etc., but these measures will increase the cost of materials or human resources. Therefore, how to improve the existing core lamination process holes to increase production efficiency is a problem faced by technical R&D personnel and enterprise managers.
发明内容Contents of the invention
本发明为了解决现有技术中存在的上述缺陷和不足，提供了一种变压器铁心定位结构及其定位方法，冲孔面积大幅降低，能够提高铁心冲孔局部的导磁截面积，从而改善变压器铁心的性能参数。In order to solve the above-mentioned defects and deficiencies in the prior art, the present invention provides a transformer core positioning structure and its positioning method, the punching area is greatly reduced, and the magnetic cross-sectional area of the core punching part can be increased, thereby improving the transformer core. performance parameters.
为解决上述技术问题，本发明提供一种变压器铁心定位结构，其特在于：包括铁心和工装靠模，所述铁心上端设有上轭，所述铁心的下端设有下轭，所述铁心的左右两侧分别设有边柱，所述铁心的中部设有中柱，所述边柱与所述中柱平行，所述边柱与所述上轭、下轭垂直，所述上轭、下轭、边柱、中柱上设有定位孔，所述定位孔为三角形状，所述工装靠模端部为三角形状，且与所述三角形定位孔吻合。In order to solve the above-mentioned technical problems, the present invention provides a positioning structure for a transformer iron core, which is characterized in that it includes an iron core and a jig, the upper end of the iron core is provided with an upper yoke, the lower end of the iron core is provided with a lower yoke, and the iron core is provided with a lower yoke. The left and right sides are respectively provided with side posts, the middle part of the iron core is provided with a middle post, the side posts are parallel to the middle post, the side posts are perpendicular to the upper yoke and the lower yoke, and the upper yoke, lower yoke Positioning holes are arranged on the yoke, the side columns, and the center column. The positioning holes are triangular in shape, and the ends of the tooling formers are in a triangular shape and coincide with the triangular positioning holes.
优选地，所述三角形定位孔位于所述上轭、下轭、边柱、中柱的边缘处。Preferably, the triangular positioning holes are located at the edges of the upper yoke, lower yoke, side post and center post.
优选地，所述三角形定位孔位于所述上轭、下轭、边柱的内边缘或外边缘处。Preferably, the triangular positioning hole is located at the inner edge or outer edge of the upper yoke, lower yoke, and side post.
优选地，所述三角形定位孔的高度为3-10mm。Preferably, the height of the triangular positioning hole is 3-10mm.
优选地，所述三角形定位孔的高度为5mm。Preferably, the height of the triangular positioning hole is 5 mm.
优选地，所述三角形定位孔的冲孔截面积为12-15mm2。Preferably, the punching cross-sectional area of the triangular positioning hole is 12-15mm 2 .
优选地，所述三角形定位孔的冲孔接面积为14.4mm2。Preferably, the punching contact area of the triangular positioning hole is 14.4mm 2 .
变压器铁心定位结构的定位方法，包括以下步骤：A positioning method for a transformer core positioning structure includes the following steps:
步骤一，安装工装靠模：将所述工装靠模固定安装在所述铁心的中柱、边柱以及上轭、下轭的位置；Step 1, install the tooling master: fix and install the tooling master on the positions of the center column, side column, upper yoke and lower yoke of the iron core;
步骤二，叠片；Step two, lamination;
步骤三，铁心校正：利用工装或量具对铁心的垂直度、平面度进行校正。Step 3, core correction: Use tooling or measuring tools to correct the verticality and flatness of the core.
所述步骤二中，所述工装靠模紧贴在所述铁心的硅钢片上。In the second step, the tooling master is closely attached to the silicon steel sheet of the iron core.
所述工装靠模的位置根据所述铁心每级硅钢片的尺寸调整。The position of the tooling master is adjusted according to the size of each level of silicon steel sheet of the iron core.
本发明所达到的有益技术效果：Beneficial technical effect achieved by the present invention:
传统的铁心中间冲孔一般为≥Φ10mm的圆孔，其占用硅钢片的有效截面积≥78.5mm2，根据实际试验数据，该结构较无冲孔的铁心其空载损耗将增加3％左右，空载电流要提高10％左右，噪音水平增加1dB。本发明通过对传统铁心工艺定位孔改革，将圆形的铁心中间工艺孔变为硅钢片边缘的三角形工艺定位孔，使得铁心冲孔的截面积减小80％，铁心冲孔主磁通的衍射尺寸随之减小，铁心工艺孔处局部磁密升高的现象可以得到缓解，铁心损耗、空载电流值及噪音水平值能够得到有效改善。The middle punching hole of the traditional iron core is generally a round hole ≥Φ10mm, which occupies the effective cross-sectional area of the silicon steel sheet ≥78.5mm 2 . According to the actual test data, the no-load loss of this structure will increase by about 3% compared with the core without punching. The no-load current should be increased by about 10%, and the noise level should be increased by 1dB. The invention reforms the traditional iron core process positioning hole, and changes the circular core process hole into a triangular process positioning hole on the edge of the silicon steel sheet, so that the cross-sectional area of the iron core punching hole is reduced by 80%, and the diffraction of the main magnetic flux of the iron core punching hole is reduced. The size is reduced accordingly, the phenomenon of local magnetic density increase at the core process hole can be alleviated, and the core loss, no-load current value and noise level value can be effectively improved.
附图说明Description of drawings
图1传统铁心定位孔结构示意图；Fig. 1 Schematic diagram of traditional iron core positioning hole structure;
图2本发明铁心定位孔结构示意图；Fig. 2 is a structural schematic diagram of core positioning holes of the present invention;
图3本发明工装靠模结构示意图。Fig. 3 is a schematic diagram of the structure of the tooling master of the present invention.
其中：1上轭；2下轭；3三角形定位孔；4工装靠模；5边柱；6中柱。Among them: 1 upper yoke; 2 lower yoke; 3 triangular positioning hole; 4 tooling pattern; 5 side column; 6 center column.
具体实施方式detailed description
为了审查员能更好的了解本发明的技术特征、技术内容及其达到的技术效果，现将本发明的附图结合实施例进行更详细的说明。然而，所示附图，只是为了更好的说明本发明的技术方案，并不是本发明的真实比例和最佳配置，所以，请审查员不要就附图的比列和配置，限制本发明的权利要求保护范围。In order for examiners to better understand the technical features, technical contents and technical effects of the present invention, the accompanying drawings of the present invention will now be described in more detail in conjunction with the embodiments. However, the drawings shown are only for better illustration of the technical solutions of the present invention, not the true scale and optimal configuration of the present invention, so the examiner is requested not to limit the scope of the present invention with respect to the ratio and configuration of the drawings Scope of claims.
下面结合附图和实施例对本发明专利进一步说明。Below in conjunction with accompanying drawing and embodiment the patent of the present invention is further described.
如图1-3所示，本发明提供一种变压器铁心定位结构，包括铁心和工装靠模4，所述铁心上端设有上轭1，所述铁心的下端设有下轭2，所述铁心的左右两侧分别设有边柱5，所述铁心的中部设有中柱6，所述边柱5与所述中柱6平行，所述边柱5与所述上轭1、下轭2垂直，所述上轭1、下轭2、边柱5、中柱6上设有定位孔3，所述定位孔为三角形状，所述工装靠模4端部为三角形状，且与所述三角形定位孔3吻合。As shown in Figures 1-3, the present invention provides a positioning structure for a transformer core, including a core and a jig 4, an upper yoke 1 is provided at the upper end of the core, a lower yoke 2 is provided at the lower end of the core, and a lower yoke 2 is provided at the lower end of the core. Side posts 5 are respectively provided on the left and right sides of the iron core, and a middle post 6 is provided in the middle of the iron core. The side posts 5 are parallel to the middle post 6. Vertically, the upper yoke 1, the lower yoke 2, the side column 5, and the middle column 6 are provided with a positioning hole 3, the positioning hole is triangular in shape, and the end of the tooling template 4 is in a triangular shape, and is connected to the The triangular positioning hole 3 matches.
所述三角形定位孔3位于所述上轭1、下轭2、边柱5、中柱6的外边缘处，可以根据需要将三角形定位孔3设置在上轭1、下轭2、边柱5的内边缘或外边缘处。The triangular positioning hole 3 is located at the outer edges of the upper yoke 1, the lower yoke 2, the side column 5, and the middle column 6, and the triangular positioning hole 3 can be arranged on the upper yoke 1, the lower yoke 2, and the side column 5 as required. at the inner or outer edge of the .
铁心增加了工艺孔后其有效导磁截面积也随之减小，根据工艺孔的尺寸其影响也不尽相同，对变压器声级水平、空载损耗及空载励磁电流等参数有一定的影响，所述三角形定位孔的高度为3-10mm，冲孔截面积为12-15mm2，尤其当所述三角形定位孔的高度为5mm，冲孔接面积为14.4mm2时，使得铁心冲孔的截面积减小80％，铁心冲孔主磁通的衍射尺寸随之减小，对变压器声级水平、空载损耗及空载励磁电流等参数的影响最小。After the core increases the process hole, its effective magnetic cross-sectional area also decreases, and the influence is different according to the size of the process hole, which has a certain influence on the transformer sound level, no-load loss and no-load excitation current and other parameters. , the height of the triangular positioning hole is 3-10mm, the cross-sectional area of the punching hole is 12-15mm 2 , especially when the height of the triangular positioning hole is 5mm, and the punching contact area is 14.4mm 2 , the core punching When the cross-sectional area is reduced by 80%, the diffraction size of the main magnetic flux of the iron core punching hole is reduced accordingly, and the influence on parameters such as transformer sound level, no-load loss and no-load excitation current is minimal.
变压器铁心定位结构的定位方法，包括以下步骤：A positioning method for a transformer core positioning structure includes the following steps:
步骤一，安装工装靠模4：将所述工装靠模4固定安装在所述铁心的中柱6、边柱5以及上轭1、下轭2的位置；Step 1, installing the tooling master 4: fixing the tooling master 4 on the positions of the center column 6, the side column 5, the upper yoke 1 and the lower yoke 2 of the iron core;
步骤二，叠片；叠片方式为传统的叠片方式，不是本发明的主要的创新点，因此不作详细叙述；Step 2, lamination; the lamination method is a traditional lamination method, which is not the main innovation point of the present invention, so it will not be described in detail;
步骤三，铁心校正：利用工装或量具对铁心的垂直度、平面度进行校正。Step 3, core correction: Use tooling or measuring tools to correct the verticality and flatness of the core.
叠片过程中，所述工装靠模4紧贴在所述铁心的硅钢片上，且工装靠模4的位置根据所述铁心每级硅钢片的尺寸调整，确保了工装靠模4位置精确牢固。During the stacking process, the tooling cam 4 is closely attached to the silicon steel sheet of the iron core, and the position of the tooling cam 4 is adjusted according to the size of each level of the silicon steel sheet of the iron core, so that the position of the tooling cam 4 is accurate and firm.
以上已以较佳实施例公布了本发明，然其并非用以限制本发明，凡采取等同替换或等效变换的方案所获得的技术方案，均落在本发明的保护范围内。The present invention has been disclosed above with preferred embodiments, but it is not intended to limit the present invention. All technical solutions obtained by adopting equivalent replacement or equivalent transformation schemes fall within the protection scope of the present invention.
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