WO2017129074A1 - 折叠式立体双开口铁芯油浸式变压器 - Google Patents

折叠式立体双开口铁芯油浸式变压器 Download PDF

Info

Publication number
WO2017129074A1
WO2017129074A1 PCT/CN2017/072074 CN2017072074W WO2017129074A1 WO 2017129074 A1 WO2017129074 A1 WO 2017129074A1 CN 2017072074 W CN2017072074 W CN 2017072074W WO 2017129074 A1 WO2017129074 A1 WO 2017129074A1
Authority
WO
WIPO (PCT)
Prior art keywords
iron core
frame
belt group
group
core
Prior art date
Application number
PCT/CN2017/072074
Other languages
English (en)
French (fr)
Inventor
齐侠
齐会南
Original Assignee
齐侠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610062748.3A external-priority patent/CN105513756A/zh
Priority claimed from CN201710013179.8A external-priority patent/CN107045924A/zh
Application filed by 齐侠 filed Critical 齐侠
Publication of WO2017129074A1 publication Critical patent/WO2017129074A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling

Definitions

  • the invention relates to the technical field of transformers, in particular to a folding three-dimensional double-core iron core oil-immersed transformer.
  • the object of the present invention is to provide a folded three-dimensional double-core iron core oil-immersed transformer, which solves the problems of poor mechanical strength, poor resistance to sudden short circuit, low insertion efficiency, and the like of the existing oil-immersed transformer core. .
  • a folded three-dimensional open-core iron core oil-immersed transformer which comprises three single-frame iron cores each having the same size and the same structure and assembled at an angle of 120° at a central angle.
  • the iron core group and the oil tank for cooperating the iron core group the single frame iron core comprises a single frame iron core column, a single frame iron core upper yoke, a single frame iron core lower yoke and a bending slope
  • the single The frame iron core is formed by stacking the inner layer belt group, the middle layer belt group and the outer layer belt group
  • the middle layer belt group comprises a middle layer first belt group and stacked on the outer side of the middle layer first belt group
  • the middle second tape set, the outer tape set includes an outer first tape set, an outer second tape set stacked on the outer side of the outer first tape set, and stacked on the outer
  • An outer third belt group on the outer side of the second strip group, wherein the inner layer set, the middle first strip set and the outer first strip set
  • the plurality of openings are symmetrically arranged on the upper end of the single-frame iron core column, and the middle second belt group and the outer second belt group are respectively symmetrically arranged by a plurality of openings.
  • the single-ring strip frame on the curved inclined surface between the frame iron core column and the single-frame iron core upper yoke is stacked, and the outer third material belt group is symmetrically arranged on the single-frame iron core upper yoke by a plurality of openings
  • the single-ring strips at both ends are stacked, wherein the opening on each single-ring strip frame and the bending angle closest thereto to the opening are ⁇ 5 mm, forming an outer layer
  • the openings on the single-ring strip frame of the three-tape set are all located in a cylindrical space extending upward along the core of the transformer core, wherein the transformer core core is formed by assembling single-frame iron core pillars.
  • the outer side of the transformer core is provided with a low-pressure casting coil, and the low-pressure casting coil is provided with a high-pressure casting coil, and a struts are arranged between the low-pressure casting coil and the high-pressure casting coil, and the three single-frame iron core upper yokes are passed through the upper clamp.
  • the parts are fixed, and the three single-frame iron core lower yokes are fixed by the lower clamp members, the upper clamp member and the lower clamp member. Through fixed-side lever.
  • the low pressure casting coil and the high pressure casting coil are both epoxy casting coils.
  • the three sides of the oil tank are respectively provided with heat dissipating devices.
  • the middle layer belt group and/or the outer layer material belt group constituting the single-frame iron core are a plurality of groups, and the layer material belt groups in each group are sequentially stacked, and the outer layer belt groups of each group are sequentially stacked.
  • the single-ring strip frame constituting the inner layer strip set, the middle layer strip set and the outer layer strip set is correspondingly provided with eight 135 degree bend angles.
  • the single-ring strip frame constituting the inner layer strip set, the middle layer strip set and the outer layer strip set is correspondingly provided with twelve 150 degree bend angles.
  • the middle second tape set and the outer second tape set respectively comprise a plurality of single ring strip frames symmetrically disposed on the first bending slope and a plurality of stacked symmetrically disposed at the first fold a single-ring strip frame outside the single-ring strip frame on the curved slope and symmetrically disposed on the second bend slope surface, wherein the first bend slope is located on the single-frame iron core pillar and the single-frame iron core upper yoke The first end is connected to the single-frame iron core, and the two ends of the second bending inclined surface are respectively connected with the first bending inclined surface and the single-frame iron core upper yoke.
  • the opening positions of the single-ring strips constituting the inner layer strip group, the middle layer strip group and the outer layer strip group are arranged in a staggered arrangement.
  • the cross section of the transformer core stud is oblong or round-like inscribed polygon or stepped or rectangular or circular.
  • the single-frame iron core constituting the iron core group in the folded three-dimensional double-core iron core oil-immersed transformer is composed of an inner layer belt group, a middle layer belt group and an outer layer belt group, and constitutes an inner layer belt.
  • the opening on the single-ring belt frame of the group, the middle belt group and the outer belt group is ⁇ 5 mm from the bending angle on the single-ring belt frame and closest to the opening, so that the single circle
  • the opening of the strip frame forms a limiting portion with a length of ⁇ 5 mm, and the limiting portion can play a role of the upper and lower or/and the left and right direction of the single-ring strip frame located inside thereof, specifically: when the iron After the core insertion is completed, the outer third belt set constituting the outer belt group can prevent the second belt group from being swayed on the inner side, and the outer second belt group can be prevented from being located inside.
  • the turbulence of the first belt group of the outer layer achieves the effect of locking in the outer belt group
  • the middle second belt group constituting the middle belt group can prevent the movement of the middle first belt group located inside thereof , the purpose of locking in the middle layer of the belt group is realized, and at the same time, the outer layer belt group as a whole can also prevent the position
  • the middle layer of the inner belt is swayed, and the middle belt group can also prevent the turbulence of the inner belt group located inside thereof, realizing the outer belt group, the middle belt group and the inner belt group.
  • the purpose of locking is to solve the problem that the iron core which is only open at the upper end of the core of the transformer core is prone to longitudinal looseness, displacement, deformation and poor resistance to sudden short circuit under the action of a strong electromagnetic field, and at the same time, the material belt
  • the locking function between the groups and the belt group greatly improves the mechanical strength of the iron core and improves the overall quality of the folded three-dimensional double-core iron core oil-immersed transformer;
  • the single-frame iron core of the folded three-dimensional double-core iron core oil-immersed transformer increases one opening of the existing iron core to three openings, and the increased opening portions are exposed outside the coil, which is obvious and convenient.
  • the insertion of the iron core improves the efficiency of inserting the core, reduces the cost of manual production, and increases the core of the opening by dispersing the position of the opening, so that the vibration is reduced, the noise is improved, and the anti-burst of the core is further improved. Short circuit capability;
  • the openings on the single-ring strip frame forming the outer third strip group are located in the cylindrical space extending upward along the core of the transformer core, which facilitates the assembly of the coil, so that the coil is placed from top to bottom. The outside of the transformer core is not stuck during the process.
  • FIG. 1 is a schematic view showing the external structure of a foldable stereo double-open core oil-immersed transformer according to the present invention
  • FIG. 2 is a schematic view showing the internal structure of a folded three-dimensional double-core iron core oil immersed transformer according to the present invention
  • FIG. 3 is a schematic structural view of an embodiment of a core group
  • FIG. 4 is a schematic structural view of another embodiment of a core group
  • FIG. 5 is a schematic structural view of an embodiment of a single-frame iron core
  • FIG. 6 is a schematic structural view of another embodiment of a single-frame iron core
  • Figure 7 is a schematic structural view of an embodiment of an inner layer strip
  • Figure 8 is a schematic view showing the structure of another embodiment of the inner layer strip
  • Figure 9 is a schematic structural view of an embodiment of a middle layer tape set
  • Figure 10 is a schematic structural view of another embodiment of the middle layer belt set.
  • Figure 11 is a schematic structural view of an embodiment of an outer layer strip
  • Figure 12 is a schematic view showing the structure of another embodiment of the outer layer strip
  • Figure 13 is a cross-sectional view of a transformer core core in an oblong shape
  • Figure 14 is a cross-sectional view of a transformer core stud having a circle-inscribed polygon
  • Figure 15 is a cross-sectional view of a stepped transformer core stud
  • Figure 16 is a cross-sectional view of a rectangular core of a transformer
  • Figure 17 is a cross-sectional view of a transformer core core in a circular shape.
  • the foldable three-dimensional open-core iron core oil-immersed transformer comprises three single-frame iron cores 1 which are identical in size and have the same structure and are assembled at an angle of 120°.
  • the single-frame iron core 1 includes a single-frame iron core column 11, a single-frame iron core upper yoke 12, and a single iron core group.
  • the frame core lower yoke 13 and the bending slope 14 are formed by sequentially stacking the inner layer belt group 3, the middle layer material belt group 4 and the outer layer material belt group 5, as shown in Fig. 9.
  • the intermediate layer set 4 includes a middle first tape set 41 and a middle second tape set 42 stacked on the outer side of the middle first tape set 41, as shown in FIGS. 11 and 12,
  • the layer belt set 5 includes an outer layer first tape set 51, an outer layer second tape set 52 stacked on the outer side of the outer first tape set 51, and a second tape stack stacked on the outer layer.
  • the first tape set 51 (shown in Figures 11 and 12) is respectively composed of a plurality of openings
  • a single-ring strip frame disposed at the upper end of the single-frame iron core stud 11 is assembled, and a middle second strip set 42 (shown in Figures 9 and 10) and an outer second strip set 52 (Fig. 11) And shown in FIG. 12, respectively, a plurality of openings are symmetrically arranged on the bending bevel 14 between the single-frame iron core stud 11 and the single-frame iron core upper yoke 12, and the outer layer is stacked.
  • the third tape set 53 (shown in FIGS. 11 and 12) is formed by stacking a plurality of single-ring strip frames symmetrically disposed at both ends of the single-frame iron core upper yoke 12, wherein each single-turn material is placed
  • the distance between the opening on the frame and the bending angle located on the same side of the opening is ⁇ 5 mm, and the openings on the single-ring belt frame constituting the outer third tape group 53 are located along the core of the transformer.
  • the openings on the single-ring strip frame are located in the range of the A, B, and C regions, wherein the area A represents the single-frame iron core.
  • An openable area on the column the area is located at the upper end of the single-frame iron core column and the distance from the bending angle is ⁇ 5 mm, and the area B represents the openable area on the bending slope, and the distance of the area from the bending angle is ⁇ 5mm, the openable area of the upper yoke of the single-frame iron core of the area C, the area is located in the cylindrical space extending upward along the core of the transformer core and the distance from the bending angle is ⁇ 5mm, wherein the transformer core core 21 is formed by combining single-frame iron cores 11 , wherein each of the rectangular frames shown in FIG. 3 to FIG. 12 represents a set of single-turn material frames, and does not represent only one single-ring material frame. As shown in FIG.
  • the transformer core leg 21 is provided with a low-pressure casting coil 22, and a low-pressure casting coil 22 is provided with a high-pressure casting coil 23, and the low-pressure casting coil 22 and the high-pressure casting coil 23 are disposed between Support
  • the low-pressure casting coil 22 and the high-pressure casting coil 23 are preferably epoxy resin casting coils.
  • the three sides of the oil tank 2 are respectively provided with heat dissipating devices 25 , and the heat dissipating device is preferably a heat sink. .
  • the single-frame iron core of the iron core group in the folded three-dimensional double-core iron core oil-immersed transformer is composed of an inner layer belt group, a middle layer belt group and an outer layer belt group, and constitutes an inner layer belt group and a middle layer.
  • the opening on the single-ring strip frame of the strip set and the outer strip set is ⁇ 5 mm from the bend angle on the single-ring strip frame and closest to the opening, so that the single-ring strip frame
  • the opening portion is formed with a limiting portion having a length of ⁇ 5 mm, and the limiting portion can play a limit action on the upper and lower or/and the left and right direction of the single-ring strip frame located inside thereof, specifically: when the core is inserted
  • the outer third belt set forming the outer belt group prevents the second belt group from being swayed on the inner side, and the outer second belt group prevents the outer layer on the inner side.
  • the turbulence of the one belt group achieves the locking effect in the outer belt group
  • the middle second belt group constituting the middle belt group can prevent the turbulence of the first layer of the middle layer located on the inner side thereof, thereby realizing
  • the purpose of the locking in the middle belt group, at the same time, the outer belt group as a whole can also prevent the inner side of the belt
  • the middle layer belt group is swayed, and the middle layer belt group can also prevent the turbulence of the inner layer belt group located inside thereof, thereby realizing the locking between the outer layer belt group, the middle layer belt group and the inner layer belt group.
  • the purpose is to solve the problem that the iron core which is only open at the upper end of the core of the transformer core is prone to longitudinal looseness, displacement, deformation and poor resistance to sudden short circuit under the action of a strong electromagnetic field, and at the same time, between the strip groups
  • the locking function in the belt group greatly improves the mechanical strength of the iron core, and improves the overall quality of the folded three-dimensional open-core iron core oil-immersed transformer.
  • the single-frame iron core used in the oil-immersed transformer will be existing.
  • One opening of the iron core is increased to three openings, and the increased opening portions are exposed outside the coil, which is obviously visible, which facilitates the insertion of the iron core, improves the efficiency of inserting the core, reduces the labor cost, and increases the opening.
  • the iron core is dispersed by the position of the opening to reduce the vibration, and the noise is improved, thereby further improving the short-circuit resistance of the iron core, and at the same time, forming an opening on the single-ring material frame of the third-layer tape group of the outer layer. All Along the inner cylindrical space transformer core to the stem extending upwardly, to facilitate the set of coils such that the coil is not in the process of the stem outside the transformer core from top to bottom in the package are stuck.
  • the middle-layer material group 4 of the single-frame iron core 1 and / or the outer strip group 5 is a plurality of groups, and the middle strip groups 4 in each group are sequentially stacked, and the outer strip groups 5 of each group are sequentially stacked.
  • FIG. 5 As shown in FIG. 3, FIG. 5, FIG. 7, FIG. 9 and FIG. 11, eight single-loop strips constituting the inner layer strip group 3, the middle layer strip group 4 and the outer layer strip group 5 are arranged correspondingly with eight A bending angle of 135 degrees, that is, four bending bevels are arranged on each single ring material frame.
  • FIG. 6, FIG. 8, FIG. 10 and FIG. 12, 12 single-row strip frames constituting the inner layer strip group 3, the middle layer strip group 4 and the outer layer strip group 5 are correspondingly arranged.
  • a bend angle of 150 degrees, that is, eight bend bevels are placed on each single-ring strip frame.
  • the middle second tape group 42 and the outer second tape group 52 respectively include a plurality of openings.
  • a single-ring strip frame symmetrically disposed on the first bending slope and a plurality of single-ring strip frames stacked on the first bending slope symmetrically on the outer side of the opening and symmetrically disposed on the second bending slope a single-ring material frame, wherein the first bending slope is located between the single-frame iron core stud 11 and the single-frame iron core upper yoke 12, and one end is connected with the single-frame iron core stud 11 and the second bent inclined surface is two The ends are respectively connected to the first bending slope and the single-frame core upper yoke 12.
  • the opening positions of the single-ring strip frames constituting the inner layer strip group 3, the middle layer strip group 4 and the outer layer strip group 5 are stepped by steps.
  • the stacking is arranged in such a way that the iron core is minimized due to the opening structure, and the mechanical strength of the core is strengthened and improved.
  • the cross section of the transformer core 21 is oblong (as shown in FIG. 13) or a circle-inscribed polygon (as shown in FIG. 14) or a stepped type (as shown in FIG. 15) or a rectangle. (as shown in Figure 16) or a circle like this (as shown in Figure 17).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

本发明公开了一种折叠式立体双开口铁芯油浸式变压器，包括由三个单框铁芯拼合而成的铁芯组和配合放置所述铁芯组的油箱，单框铁芯包括内层料带组、中层料带组和外层料带组，组成内层料带组的单圈料带框的开口对称设置在单框铁芯芯柱的上端，组成中层料带组的单圈料带框的开口对称设置在单框铁芯芯柱的上端和单框铁芯芯柱与单框铁芯上轭之间的折弯斜面上，组成外层料带组的单圈料带框的开口对称设置在单框铁芯芯柱的上端、单框铁芯芯柱与单框铁芯上轭之间的折弯斜面上和单框铁芯上轭的两端，每个单圈料带框上的开口与离其最近的折弯角的距离≥5mm。本发明机械强度高、抗突发短路能力强、插装效率高。

Description

折叠式立体双开口铁芯油浸式变压器 技术领域
本发明涉及变压器技术领域，特别涉及折叠式立体双开口铁芯油浸式变压器。
背景技术
变压器在输变电系统中，具有十分重要的地位，近年来，随着我国配电网建设投入不断加大和国家对高效节能型变压器进行大规模的推广，闭口“立体三角形卷铁芯变压器”因其铁芯三相磁路完全对称，且节能效果好而被广泛应用，然而，由于闭口三角型铁芯变压器在制造过程中套装线圈工艺复杂，生产效率低下，产品维修困难等，使其发展受阻。目前，一种可拆装的折叠式立体开口三角形油浸式变压器的问世，解决了上述问题，但仍受到一定程度上的技术限制，如：开口接缝位置只能集中设置在铁芯芯柱的上端，极易造成松动、移位、变形，隐埋在线圈端部内的接缝给回插铁芯带来了很大的不便，不仅影响了铁芯性能，也降低了变压器的品质。
因此，如何对现有的油浸式变压器进行结构上的改进，以提高其机械强度、抗突发短路能力和插装效率，成为人们亟待解决的问题。
发明内容
鉴于此，本发明的目的在于提供一种折叠式立体双开口铁芯油浸式变压器，以解决现有油浸式变压器铁芯机械强度差、抗突发短路能力差、插装效率低等问题。
为解决上述问题，本发明提供的技术方案是：折叠式立体双开口铁芯油浸式变压器，包括由三个独立且大小结构均相同的单框铁芯以中心角120°的角度拼合而成的铁芯组和配合放置所述铁芯组的油箱，所述单框铁芯包括单框铁芯芯柱、单框铁芯上轭、单框铁芯下轭和折弯斜面，所述单框铁芯由内层料带组、中层料带组和外层料带组依次叠装而成，中层料带组包括中层第一料带组和叠装在所述中层第一料带组外侧的中层第二料带组，外层料带组包括外层第一料带组、叠装在所述外层第一料带组外侧的外层第二料带组和叠装在所述外层第二料带组外侧的外层第三料带组，其中，内层料带组、中层第一料带组和外层第一料带组分 别由多个开口对称设置在单框铁芯芯柱的上端的单圈料带框叠装而成，中层第二料带组和外层第二料带组分别由多个开口对称设置在单框铁芯芯柱与单框铁芯上轭之间的折弯斜面上的单圈料带框叠装而成，外层第三料带组由多个开口对称设置在单框铁芯上轭的两端的单圈料带框叠装而成，其中，位于每个单圈料带框上的开口与位于其上且离所述开口最近的折弯角的距离均≥5mm，组成外层第三料带组的单圈料带框上的开口均位于沿变压器铁芯芯柱向上延伸的柱形空间内，其中，所述变压器铁芯芯柱由单框铁芯芯柱拼合而成，所述变压器铁芯芯柱外侧套装有低压浇注线圈，低压浇注线圈外侧套装有高压浇注线圈，所述低压浇注线圈与高压浇注线圈之间设置有撑条，三个单框铁芯上轭通过上夹件固定，三个单框铁芯下轭通过下夹件固定，上夹件和下夹件通过侧拉杆固定。
优选，所述低压浇注线圈与高压浇注线圈均为环氧树脂浇注线圈。
进一步优选，所述油箱的三个侧面分别设置有散热装置。
进一步优选，组成单框铁芯的中层料带组和/或外层料带组为多组，且各组中层料带组依次叠装，各组外层料带组依次叠装。
进一步优选，组成内层料带组、中层料带组和外层料带组的单圈料带框上对应设置有8个135度的折弯角。
进一步优选，组成内层料带组、中层料带组和外层料带组的单圈料带框上对应设置有12个150度的折弯角。
进一步优选，中层第二料带组和外层第二料带组分别包括多个开口对称设置在第一折弯斜面上的单圈料带框和多个叠装于开口对称设置在第一折弯斜面上的单圈料带框外侧且开口对称设置在第二折弯斜面上的单圈料带框，其中，第一折弯斜面位于单框铁芯芯柱与单框铁芯上轭之间且一端与单框铁芯芯柱连接，第二折弯斜面的两端分别与第一折弯斜面和单框铁芯上轭连接。
进一步优选，组成内层料带组、中层料带组和外层料带组的单圈料带框的开口对接位置均按阶梯式隔层错位排列。
进一步优选，变压器铁芯芯柱的截面呈长圆形或类圆内接多边形或台阶型或矩形或类圆形。
本发明提供的折叠式立体双开口铁芯油浸式变压器的有益效果如下：
1、构成该折叠式立体双开口铁芯油浸式变压器内的铁芯组的单框铁芯由内层料带组、中层料带组和外层料带组组成，而组成内层料带组、中层料带组和外层料带组的单圈料带框上的开口与位于所述单圈料带框上且离所述开口最近的折弯角的距离≥5mm，使得在单圈料带框的开口处均形成长度≥5mm的限位部，该限位部能起到对位于其内侧的单圈料带框的上下或/和左右方向的限位作用，具体的：当铁芯插装完成后，组成外层料带组的外层第三料带组能够防止位于其内侧的外层第二料带组的窜动，外层第二料带组能够防止位于其内侧的外层第一料带组的窜动，达到了外层料带组内锁定的效果，组成中层料带组的中层第二料带组能够防止位于其内侧的中层第一料带组的窜动，实现了中层料带组内的锁定的目的，同时，外层料带组作为一个整体还能够防止位于其内侧的中层料带组的窜动，中层料带组还能够防止位于其内侧的内层料带组的窜动，实现了外层料带组、中层料带组和内层料带组之间锁定的目的，从而解决了仅在变压器铁芯芯柱上端开口的铁芯容易在强大的电磁场的作用下产生纵向松动、移位、变形，抗突发短路能力差等问题，同时，料带组间及料带组内的锁定作用大大提高了铁芯的机械强度，提高了该折叠式立体双开口铁芯油浸式变压器的整体质量；
2、该折叠式立体双开口铁芯油浸式变压器采用的单框铁芯将现有铁芯的一处开口增加至三处开口，且增加的开口部分均暴露在线圈外，明显可见，方便了铁芯的插装，提高了铁芯插装效率，降低人工生产成本，增加开口后的铁芯通过将开口位置分散，使震动削减，对噪声有所改善，进一步提高了铁芯的抗突发短路能力；
3、组成外层第三料带组的单圈料带框上的开口均位于沿变压器铁芯芯柱向上延伸的柱形空间内，方便了线圈的套装，使得线圈在由上至下套装在变压器铁芯芯柱外侧的过程中不会被卡住。
附图说明
下面结合附图及实施方式对本发明作进一步详细的说明：
图1为本发明的折叠式立体双开口铁芯油浸式变压器外部结构示意图；
图2为本发明的折叠式立体双开口铁芯油浸式变压器内部结构示意图；
图3为铁芯组一实施例的结构示意图；
图4为铁芯组另一实施例的结构示意图；
图5为单框铁芯一实施例的结构示意图；
图6为单框铁芯另一实施例的结构示意图；
图7为内层料带组一实施例的结构示意图；
图8为内层料带组另一实施例的结构示意图；
图9为中层料带组一实施例的结构示意图；
图10为中层料带组另一实施例的结构示意图；
图11为外层料带组一实施例的结构示意图；
图12为外层料带组另一实施例的结构示意图；
图13为呈长圆形的变压器铁芯芯柱的截面图；
图14为呈类圆内接多边形的变压器铁芯芯柱的截面图；
图15为呈台阶形的变压器铁芯芯柱的截面图；
图16为呈矩形的变压器铁芯芯柱的截面图；
图17为呈类圆形的变压器铁芯芯柱的截面图。
具体实施方式
下面将结合具体的实施方案对本发明进行进一步的解释，但并不局限本发明。
如图1至图4所示，本发明提供的折叠式立体双开口铁芯油浸式变压器包括由三个独立且大小结构均相同的单框铁芯1以中心角120°的角度拼合而成的铁芯组和配合放置所述铁芯组的油箱2，如图5、图6所示，所述单框铁芯1包括单框铁芯芯柱11、单框铁芯上轭12、单框铁芯下轭13和折弯斜面14，所述单框铁芯1由内层料带组3、中层料带组4和外层料带组5依次叠装而成，如图9、图10所示，中层料带组4包括中层第一料带组41和叠装在所述中层第一料带组41外侧的中层第二料带组42，如图11、图12所示，外层料带组5包括外层第一料带组51、叠装在所述外层第一料带组51外侧的外层第二料带组52和叠装在所述外层第二料带组52外侧的外层第三料带组53，其中，内层料带组3(图7和图8所示)、中层第一料带组41(图9和图10所示)和外层第一料带组51(图11和图12所示)分别由多个开口对称设置在单框铁芯芯柱11的上端的单圈料带框叠装而成，中层第二料带组42(图9和图10所示)和外层第二料带组52(图11和图12所示)分别由多个开口对称设置在单框铁芯芯柱11与单框铁芯上轭12之间的折弯斜面14上的单圈料带框叠装而成，外层第三料带组53(图11和图12所示)由多个开口对称设置在单框铁芯上轭12的两端的单圈料带框叠装而成，其中，位于每个单圈料带框上的开口与位于其上且离所述开口最近的折弯角的距离均≥5mm，组成外层第三料带组53的单圈料带框上的开口均位于沿变压器铁芯芯柱21向上延伸的柱形空间内，如图5、图6所示，单圈料带框上的开口均位于A、B、C区域所在的范围内，其中，区域A代表单框铁芯芯柱上的可开口区域，该区域位于单框铁芯芯柱的上端且距折弯角的距离≥5mm，区域B代表折弯斜面上的可开口区域，该区域距折弯角的距离≥5mm，区域C单框铁芯上轭的可开口区域，该区域位于沿变压器铁芯芯柱向上延伸的柱形空间内且距折弯角的距离≥5mm，其中，所述变压器铁芯芯柱21由单框铁芯芯柱11拼合而成，其中，图3至图12中所示的每一个类矩形框均代表一组单圈料带框，而并不是仅代表一个单圈料带框，如图2所示，所述变压器铁芯芯柱21外侧套装有低压浇注线圈22，低压浇注线圈22外侧套装有高压浇注线圈23，所述低压浇注线圈22与高压浇注线圈23之间设置有撑 条24，三个单框铁芯上轭12通过上夹件6固定，三个单框铁芯下轭13通过下夹件7固定，上夹件6和下夹件7通过侧拉杆8固定，其中，所述低压浇注线圈22与高压浇注线圈23优选为环氧树脂浇注线圈，如图1所示，所述油箱2的三个侧面分别设置有散热装置25，所述散热装置优选为散热片。
该折叠式立体双开口铁芯油浸式变压器内的铁芯组的单框铁芯由内层料带组、中层料带组和外层料带组组成，而组成内层料带组、中层料带组和外层料带组的单圈料带框上的开口与位于所述单圈料带框上且离所述开口最近的折弯角的距离≥5mm，使得在单圈料带框的开口处均形成长度≥5mm的限位部，该限位部能起到对位于其内侧的单圈料带框的上下或/和左右方向的限位作用，具体的：当铁芯插装完成后，组成外层料带组的外层第三料带组能够防止位于其内侧的外层第二料带组的窜动，外层第二料带组能够防止位于其内侧的外层第一料带组的窜动，达到了外层料带组内锁定的效果，组成中层料带组的中层第二料带组能够防止位于其内侧的中层第一料带组的窜动，实现了中层料带组内的锁定的目的，同时，外层料带组作为一个整体还能够防止位于其内侧的中层料带组的窜动，中层料带组还能够防止位于其内侧的内层料带组的窜动，实现了外层料带组、中层料带组和内层料带组之间锁定的目的，从而解决了仅在变压器铁芯芯柱上端开口的铁芯容易在强大的电磁场的作用下产生纵向松动、移位、变形，抗突发短路能力差等问题，同时，料带组间及料带组内的锁定作用大大提高了铁芯的机械强度，提高了该折叠式立体双开口铁芯油浸式变压器的整体质量另外，该油浸式变压器采用的单框铁芯将现有铁芯的一处开口增加至三处开口，且增加的开口部分均暴露在线圈外，明显可见，方便了铁芯的插装，提高了铁芯插装效率，降低人工生产成本，增加开口后的铁芯通过将开口位置分散，使震动削减，对噪声有所改善，进一步提高了铁芯的抗突发短路能力，同时，组成外层第三料带组的单圈料带框上的开口均位于沿变压器铁芯芯柱向上延伸的柱形空间内，方便了线圈的套装，使得线圈在由上至下套装在变压器铁芯芯柱外侧的过程中不会被卡住。
随着单圈料带框个数的不断增加，为更好的实现料带组间和料带组内锁定的效果，作为技术方案的改进，组成单框铁芯1的中层料带组4和/或外层料带组5为多组，且各组中层料带组4依次叠装，各组外层料带组5依次叠装。
如图3、图5、图7、图9和图11所示，组成内层料带组3、中层料带组4和外层料带组5的单圈料带框上对应设置有8个135度的折弯角，即：每个单圈料带框上设置四个折弯斜面。
如图4、图6、图8、图10和图12所示，组成内层料带组3、中层料带组4和外层料带组5的单圈料带框上对应设置有12个150度的折弯角，即：每个单圈料带框上设置八个折弯斜面。
当组成变压器铁芯的单圈料带框上设置八个折弯斜面时，如图9和图11所示，中层第二料带组42和外层第二料带组52分别包括多个开口对称设置在第一折弯斜面上的单圈料带框和多个叠装于开口对称设置在第一折弯斜面上的单圈料带框外侧且开口对称设置在第二折弯斜面上的单圈料带框，其中，第一折弯斜面位于单框铁芯芯柱11与单框铁芯上轭12之间且一端与单框铁芯芯柱11连接，第二折弯斜面的两端分别与第一折弯斜面和单框铁芯上轭12连接。
作为技术方案的改进，如图7至图12所示，组成内层料带组3、中层料带组4和外层料带组5的单圈料带框的开口对接位置均按阶梯式隔层错位排列，从而，使该铁芯由于开口结构所产生的铁损降至最低，使铁芯的机械强度得到了加强和提高。
作为技术方案的改进，变压器铁芯芯柱21的截面呈长圆形(如图13所示)或类圆内接多边形(如图14所示)或台阶型(如图15所示)或矩形(如图16所示)或类圆形(如图17所示)。
本发明的具体实施方式是按照递进的方式进行撰写的，着重强调各个实施方案的不同之处，其相似部分可以相互参见。
上面结合附图对本发明的实施方式做了详细说明，但是本发明并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (9)

  1. 折叠式立体双开口铁芯油浸式变压器，包括由三个独立且大小结构均相同的单框铁芯(1)以中心角120°的角度拼合而成的铁芯组和配合放置所述铁芯组的油箱(2)，所述单框铁芯(1)包括单框铁芯芯柱(11)、单框铁芯上轭(12)、单框铁芯下轭(13)和折弯斜面(14)，其特征在于，所述单框铁芯(1)由内层料带组(3)、中层料带组(4)和外层料带组(5)依次叠装而成，中层料带组(4)包括中层第一料带组(41)和叠装在所述中层第一料带组(41)外侧的中层第二料带组(42)，外层料带组(5)包括外层第一料带组(51)、叠装在所述外层第一料带组(51)外侧的外层第二料带组(52)和叠装在所述外层第二料带组(52)外侧的外层第三料带组(53)，其中，内层料带组(3)、中层第一料带组(41)和外层第一料带组(51)分别由多个开口对称设置在单框铁芯芯柱(11)的上端的单圈料带框叠装而成，中层第二料带组(42)和外层第二料带组(52)分别由多个开口对称设置在单框铁芯芯柱(11)与单框铁芯上轭(12)之间的折弯斜面(14)上的单圈料带框叠装而成，外层第三料带组(53)由多个开口对称设置在单框铁芯上轭(12)的两端的单圈料带框叠装而成，其中，位于每个单圈料带框上的开口与位于其上且离所述开口最近的折弯角的距离均≥5mm，组成外层第三料带组(53)的单圈料带框上的开口均位于沿变压器铁芯芯柱(21)向上延伸的柱形空间内，其中，所述变压器铁芯芯柱(21)由单框铁芯芯柱(11)拼合而成，所述变压器铁芯芯柱(21)外侧套装有低压浇注线圈(22)，低压浇注线圈(22)外侧套装有高压浇注线圈(23)，所述低压浇注线圈(22)与高压浇注线圈(23)之间设置有撑条(24)，三个单框铁芯上轭(12)通过上夹件(6)固定，三个单框铁芯下轭(13)通过下夹件(7)固定，上夹件(6)和下夹件(7)通过侧拉杆(8)固定。
  2. 按照权利要求1所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：所述低压浇注线圈(22)与高压浇注线圈(23)均为环氧树脂浇注线圈。
  3. 按照权利要求1所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：所述油箱(2)的三个侧面分别设置有散热装置(25)。
  4. 按照权利要求1所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：组成单框铁芯(1)的中层料带组(4)和/或外层料带组(5)为多组，且各组中层料带组(4)依次叠装，各组外层料带组(5)依次叠装。
  5. 照权利要求1所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：组成内层料带组(3)、中层料带组(4)和外层料带组(5)的单圈料带框上对应设置有8个135度的折弯角。
  6. 按照权利要求1所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：组成内层料带组(3)、中层料带组(4)和外层料带组(5)的单圈料带框上对应设置有12个150度的折弯角。
  7. 按照权利要求6所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：中层第二料带组(42)和外层第二料带组(52)分别包括多个开口对称设置在第一折弯斜面上的单圈料带框和多个叠装于开口对称设置在第一折弯斜面上的单圈料带框外侧且开口对称设置在第二折弯斜面上的单圈料带框，其中，第一折弯斜面位于单框铁芯芯柱(11)与单框铁芯上轭(12)之间且一端与单框铁芯芯柱(11)连接，第二折弯斜面的两端分别与第一折弯斜面和单框铁芯上轭(12)连接。
  8. 按照权利要求6所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：组成内层料带组(3)、中层料带组(4)和外层料带组(5)的单圈料带框的开口对接位置均按阶梯式隔层错位排列。
  9. 按照权利要求1至8中任一项所述的折叠式立体双开口铁芯油浸式变压器，其特征在于：变压器铁芯芯柱(21)的截面呈长圆形或类圆内接多边形或台阶型或矩形或类圆形。
PCT/CN2017/072074 2016-01-29 2017-01-22 折叠式立体双开口铁芯油浸式变压器 WO2017129074A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610062748.3A CN105513756A (zh) 2016-01-29 2016-01-29 折叠式立体双开口铁芯油浸式变压器
CN201610062748.3 2016-01-29
CN201710013179.8A CN107045924A (zh) 2016-01-29 2017-01-09 折叠式立体双开口铁芯油浸式变压器
CN201710013179.8 2017-01-09

Publications (1)

Publication Number Publication Date
WO2017129074A1 true WO2017129074A1 (zh) 2017-08-03

Family

ID=59398769

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/072074 WO2017129074A1 (zh) 2016-01-29 2017-01-22 折叠式立体双开口铁芯油浸式变压器

Country Status (1)

Country Link
WO (1) WO2017129074A1 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101276680A (zh) * 2007-03-26 2008-10-01 齐会南 一种油浸式电力变压器
CN103026432A (zh) * 2010-04-07 2013-04-03 Abb技术有限公司 室外干式变压器
CN204651132U (zh) * 2015-06-05 2015-09-16 齐会南 三角型双开口卷铁芯干式电抗器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101276680A (zh) * 2007-03-26 2008-10-01 齐会南 一种油浸式电力变压器
CN103026432A (zh) * 2010-04-07 2013-04-03 Abb技术有限公司 室外干式变压器
CN204651132U (zh) * 2015-06-05 2015-09-16 齐会南 三角型双开口卷铁芯干式电抗器

Similar Documents

Publication Publication Date Title
WO2017129073A1 (zh) 折叠式立体双开口铁芯干式变压器
KR101455489B1 (ko) 유입식 입체 권철심 비정질 합금 변압기
WO2017136997A1 (zh) 折叠式平面三相开口变压器铁芯
WO2015106594A1 (zh) 混合磁路磁集成电感器
WO2017129072A1 (zh) 折叠式立体双开口铁芯
CN105513756A (zh) 折叠式立体双开口铁芯油浸式变压器
WO2021083229A1 (zh) 一种铁芯、铁芯电抗器及方法
CN106298177A (zh) 一种立体开口卷铁芯、线圈及电力变压器
CN202487343U (zh) 立体结构卷绕式非晶合金变压器铁心
CN107633936A (zh) Llc变压器、及其实现方法及磁芯组件
KR20140123057A (ko) 개구식 입체 삼각형 비정질 합금 권철심
WO2017129074A1 (zh) 折叠式立体双开口铁芯油浸式变压器
CN204010950U (zh) 变压器铁芯
CN206584804U (zh) 一种三角立体卷铁芯变压器铁芯和线圈
CN202601375U (zh) 三角形立体卷铁芯电抗器
CN107316735A (zh) 一种电动汽车专用配电变压器
CN202523501U (zh) 框形磁约束线圈排布阵列
CN205595178U (zh) 折叠式立体双开口铁芯油浸式变压器
CN205789424U (zh) 一种电力变压器铁芯旁轭结构
US20060114095A1 (en) Electric component and its manufacturing material
WO2009024009A1 (fr) Structure de réacteur à doubles parties actives
US9251939B1 (en) Stationary induction electric apparatus
CN202275691U (zh) 一种集成nUI磁心
CN202172003U (zh) 一种双分裂干式配电变压器高压引线结构
CN202549539U (zh) 一种磁性元件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17743689

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17743689

Country of ref document: EP

Kind code of ref document: A1