WO2013078845A1 - Single phase transformer - Google Patents

Single phase transformer Download PDF

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Publication number
WO2013078845A1
WO2013078845A1 PCT/CN2012/076206 CN2012076206W WO2013078845A1 WO 2013078845 A1 WO2013078845 A1 WO 2013078845A1 CN 2012076206 W CN2012076206 W CN 2012076206W WO 2013078845 A1 WO2013078845 A1 WO 2013078845A1
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WO
WIPO (PCT)
Prior art keywords
core
core side
voltage
column
phase transformer
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PCT/CN2012/076206
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French (fr)
Chinese (zh)
Inventor
刘光辉
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国家电网公司
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Priority to CN201110389397.4A priority Critical patent/CN102403106B/en
Priority to CN201110389397.4 priority
Application filed by 国家电网公司 filed Critical 国家电网公司
Publication of WO2013078845A1 publication Critical patent/WO2013078845A1/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00Fixed transformers not covered by group H01F19/00
    • H01F30/06Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10Single-phase transformers

Abstract

A single phase transformer comprises an iron core main column (1), a first iron core side column (2) and a second iron core side column (3), wherein a low-voltage coil (11), a medium-voltage coil (13) and a high-voltage coil (14) are sleeved on the iron core main column from the inside to the outside in turn. An excitation coil (21) and a voltage regulation coil (12) are sleeved on the first iron core side column from the inside to the outside in turn. The excitation coil is connected with the medium-voltage coil sleeved on the iron core main column in parallel in order to regulate the voltage of the voltage regulation coil. By sleeving the voltage regulation coil on the first iron core side column, the transformer can conveniently wind the coil, avoid manufacturing risk, improve operation reliability, and effectively reduces the overall width of the transformer.

Description

单相变压器 技术领域  Single-phase transformer
本发明属于变压器领域, 具体涉及一种单相变压器。 背景技术  The invention belongs to the field of transformers, and in particular relates to a single-phase transformer. Background technique
变压器是一种静止的电气设备, 它利用电磁感应原理, 把一 种电压的交流电能转换成为同频率的另一种电压的交流电能。 变 压器的基本结构是: 两个或两个以上相互绝缘的线圏套装在一个 共同的铁心上, 它们之间通过磁路的耦合相互联系。 在外加电压 作用下, 一次线圏中流过交流电流, 并在铁心中产生交变磁通, 这个交变磁通同时交链一次、 二次线圏, 根据电磁感应定律, 便 可在二次线圏内感应出电动势。 从而二次线圏可以向负载供电, 实现了能量转换。  A transformer is a static electrical device that uses the principle of electromagnetic induction to convert alternating current of one voltage into alternating current of another voltage of the same frequency. The basic structure of the transformer is: Two or more mutually insulated turns are placed on a common core, which are interconnected by the coupling of magnetic circuits. Under the action of an applied voltage, an alternating current flows through the primary winding, and an alternating magnetic flux is generated in the core. This alternating magnetic flux is simultaneously linked once and twice, and according to the law of electromagnetic induction, the secondary line can be The electromotive force is induced in the crucible. Thus, the secondary winding can supply power to the load, realizing energy conversion.
图 1为现有技术中变压器的结构示意图。 如图 1所示, 变压 器的铁心为单相三柱式, 包括铁心主柱 1、 第一铁心旁柱 2和第 二铁心旁柱 3, 在铁心主柱 1、 第一铁心旁柱 2和第二铁心旁柱 3 上方和下方还设有铁轭 5, 在铁心主柱 1上套装有线圏 4以实现 变压。 线圏 4可由内向外依次包括低压线圏、 调压线圏、 中压线 圏和高压线圏。  FIG. 1 is a schematic structural view of a transformer in the prior art. As shown in Fig. 1, the core of the transformer is a single-phase three-column type, including a core main column 1, a first core side column 2 and a second core side column 3, in the core main column 1, the first core side column 2 and the first An iron yoke 5 is further disposed above and below the two core side pillars 3, and a wire 圏4 is placed on the core main column 1 to realize transformation. The wire 圏 4 may include a low pressure wire 圏, a pressure regulating wire 圏, a medium pressure wire 圏, and a high pressure wire 依次 in order from the inside to the outside.
图 2为图 1所示变压器的俯视图。 其中在铁心主柱 1周围由 内向外依次设置有低压线圏 11、 调压线圏 12、 中压线圏 13和高 压线圏 14。  Figure 2 is a top plan view of the transformer of Figure 1. A low-pressure line 圏 11, a pressure-regulating line 圏 12, a medium-pressure line 圏 13 and a high-pressure line 圏 14 are arranged in order from the inside to the outside of the main column 1 of the core.
然而, 在图 1和图 2所示的现有技术中存在以下缺陷:  However, the prior art shown in Figs. 1 and 2 has the following drawbacks:
1 ) 由于阻抗电压的需要, 调压线圏 12只能放置在中压线圏 13、 高压线圏 14以内,调压线圏 12的 32根线圏出头要经过高压 线圏 14的端部向外引出。由于高压线圏 14的端部电压为 220KV, 出头穿过时容易造成端部场强分布不均匀, 从而导致一次性通过 试验率很低、 运行可靠性差。 1) Due to the need of the impedance voltage, the pressure regulating line 只能12 can only be placed within the medium voltage line 圏13 and the high voltage line 圏14, and the 32 lines of the pressure regulating line 圏12 are led out through the end of the high voltage line 圏14. . Since the end voltage of the high voltage coil 14 is 220 kV, When the first pass is passed, the end field strength distribution is uneven, which results in a one-time pass test rate and poor operation reliability.
2 )由于所有线圏都套装在铁心主柱 1上, 因此会导致高压线 圏 14的外径达到 3米, 绕制非常困难, 线圏的辐向、 轴向尺寸保 证率低。  2) Since all the turns are placed on the main column 1 of the core, the outer diameter of the high-pressure wire 圏 14 is 3 meters, and it is very difficult to wind, and the radial and axial dimensions of the wire are low.
3 )由于所有线圏都套装在铁心主柱 1上, 变压器的重量分布 过于集中, 造成用于变压器的垫板结构复杂、 用料多, 并导致资 源浪费。  3) Since all the turns are placed on the main column 1 of the core, the weight distribution of the transformer is too concentrated, resulting in a complicated structure of the pad for the transformer, a large amount of materials, and a waste of resources.
4 ) 由于所有线圏都套装在铁心主柱 1 上, 因此铁心主柱 1 占用的空间较大,从而增大了变压器的整体宽度,造成运输困难, 并增加了运输成本。  4) Since all the turns are placed on the main column 1 of the core, the main column 1 takes up a large space, which increases the overall width of the transformer, causes transportation difficulties, and increases transportation costs.
因此, 有必要提供一种便于线圏绕制、 减少制造风险的变压 器, 以满足实际工程需要。 发明内容  Therefore, it is necessary to provide a transformer that facilitates winding and reduces manufacturing risks to meet actual engineering needs. Summary of the invention
本发明的目的是: 提供一种单相变压器, 便于线圏绕制、 减 少制造风险、 提高变压器的运行可靠性、 有效减少变压器的整体 宽度。  SUMMARY OF THE INVENTION The object of the present invention is to provide a single-phase transformer that facilitates winding, reduces manufacturing risk, improves operational reliability of the transformer, and effectively reduces the overall width of the transformer.
本发明采用的技术方案是: 一种单相变压器, 包括: 铁心主 柱、 第一铁心旁柱和第二铁心旁柱, 其中在铁心主柱上由内向外依 次套装有低压线圏、 中压线圏和高压线圏, 在第一铁心旁柱上由内 向外依次套装有励磁线圏和调压线圏, 励磁线圏与套装在铁心主柱 上的中压线圏并联, 以调节调压线圏的电压。  The technical solution adopted by the invention is: a single-phase transformer, comprising: a core main column, a first core side column and a second core side column, wherein a low-voltage line and a medium-voltage are sequentially arranged on the main core of the core from the inside to the outside. The wire 圏 and the high-voltage wire 圏 are arranged on the first core side column from the inner side to the outer side, and the excitation wire 调 and the pressure regulating wire 套装 are arranged in parallel, and the excitation wire 圏 is connected in parallel with the medium pressure wire 套装 which is set on the main core of the iron core to adjust the pressure regulating line. The voltage of 圏.
如上所述的单相变压器, 所述铁心主柱的横截面为圆形, 所 述第一铁心旁柱和第二铁心旁柱的横截面均为椭圆形, 并且所述椭 圆形的长轴与所述圆形的直径大小相同。  In the single-phase transformer as described above, the core main column has a circular cross section, and the first core side pillar and the second core side pillar are both elliptical in cross section, and the long axis of the ellipse is The circles have the same diameter.
如上所述的单相变压器,所述椭圆形的面积大于所述圆形面积 的一半。 In the single-phase transformer as described above, the area of the ellipse is larger than the circular area Half of it.
如上所述的单相变压器, 单相变压器还包括圆柱形支撑架, 用于套装在第一铁心旁柱上, 其中圆柱形支撑架在轴向方向上设置 有横截面为椭圆形的通孔, 励磁线圏和调压线圏由内向外依次套装 在圆柱形支撑架上。  The single-phase transformer as described above, the single-phase transformer further includes a cylindrical support frame for fitting on the first core side column, wherein the cylindrical support frame is provided with a through hole having an elliptical cross section in the axial direction. The excitation wire 调 and the pressure regulating wire are arranged on the cylindrical support frame from the inside to the outside.
如上所述的单相变压器, 励磁线圏和调压线圏为椭圆形, 由内 向外依次套装在第一铁心旁柱上。  In the single-phase transformer as described above, the exciting coil and the pressure regulating line are elliptical, and are arranged on the first core side column from the inside to the outside.
如上所述的单相变压器, 所述铁心主柱、 第一铁心旁柱和第二 铁心旁柱的横截面为直径相同的圆形。  In the single-phase transformer as described above, the cross section of the core main column, the first core side pillar, and the second core side pillar is a circular shape having the same diameter.
与现有技术相比, 本发明的优点在于: 便于线圏绕制、 减少 制造风险、 提高变压器的运行可靠性、 有效减少变压器的整体宽 度。 附图说明  Compared with the prior art, the invention has the advantages of: facilitating wire winding, reducing manufacturing risk, improving the operational reliability of the transformer, and effectively reducing the overall width of the transformer. DRAWINGS
此处所说明的附图用来提供对本发明的进一步理解, 构成本 申请的一部分,本发明的示意性实施例及其说明用于解幹本发明, 并不构成对本发明的不当限定。 在附图中:  The drawings are intended to provide a further understanding of the present invention, and are intended to be a part of the present invention, and the invention is not intended to be construed as limiting the invention. In the drawing:
图 1是现有技术中单相变压器的结构示意图。  1 is a schematic structural view of a single-phase transformer in the prior art.
图 2是现有技术中单相变压器的俯视图。  2 is a top plan view of a prior art single phase transformer.
图 3为本发明单相变压器一个实施例的俯视图。  3 is a top plan view of one embodiment of a single phase transformer of the present invention.
图 4为本发明单相变压器另一实施例的俯视图。  4 is a top plan view of another embodiment of a single phase transformer of the present invention.
图 5为本发明单相变压器又一实施例的俯视图。 具体实施方式  Figure 5 is a top plan view of yet another embodiment of a single phase transformer of the present invention. detailed description
以下结合附图和实施例对本发明做进一步的详细说明。  The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
附图中的符号说明: 1、 铁心主柱; 2、 第一铁心旁柱; 3、 第二铁心旁柱; 4、 线圏; 5、 铁轭; 11、 低压线圏; 12、 调压线 圏; 13、 中压线圏; 14高压线圏; 21、 励磁线圏; 22、 圆柱形支 撑架。 The symbols in the drawing illustrate: 1. the core main column; 2. the first core side column; 3. the second core side column; 4. the wire 圏; 5, the iron yoke; 11, the low pressure wire 圏; 12, the pressure regulating line 圏; 13, medium pressure line 圏; 14 high voltage line 圏; 21, excitation line 圏; 22, cylindrical support frame.
下面以自耦油浸式 500KV单相变压器为例进行说明。本领域技 术人员可以了解的是, 本发明各实施例也可适用于其它型号的单相 变压器。  The following is an example of an auto-coupled oil immersed 500KV single-phase transformer. Those skilled in the art will appreciate that embodiments of the present invention are also applicable to other types of single phase transformers.
图 3为本发明单相变压器一个实施例的俯视图。 如图 3所示, 和图 2所示的现有技术相比,将调压线圏 12从铁心主柱 1移动到第 一铁心旁柱 2上, 并在调压线圏 12内侧套 *J¾磁线圏 21。 将励磁 线圏 21与套装在铁心主柱 1上的中压线圏 13并联, 从而达到锁定 第一铁心旁柱 2的磁通、 耦合改变调压线圏 12电压的目的。  3 is a top plan view of one embodiment of a single phase transformer of the present invention. As shown in FIG. 3, compared with the prior art shown in FIG. 2, the pressure regulating wire 12 is moved from the core main column 1 to the first core side column 2, and the inside of the pressure regulating line 12 is set *J3⁄4 Magnetic wire 圏21. The exciting wire 圏 21 is connected in parallel with the medium voltage wire 套装 13 which is placed on the main column 1 of the core to achieve the purpose of locking the magnetic flux of the first core side column 2 and coupling the voltage of the voltage regulating line 圏 12 .
基于本发明上述实施例所示的单相变压器, 通过将励磁线圏和 调压线圏由内向外依次套装在单相变压器的一个铁心旁柱上, 将励 磁线圏与套装在铁心主柱上的中压线圏并联, 以调节调压线圏的电 压。 从而便于线圏绕制、 减少制造风险、 提高变压器的运行可靠 性、 有效减少变压器的整体宽度。  According to the single-phase transformer shown in the above embodiment of the present invention, the excitation line 圏 and the voltage regulation line 套装 are sequentially arranged from the inside to the outside on one of the core side columns of the single-phase transformer, and the excitation line 圏 is placed on the main core of the iron core. The medium voltage wires are connected in parallel to adjust the voltage of the voltage regulating line. This facilitates winding, reduces manufacturing risks, improves the operational reliability of the transformer, and effectively reduces the overall width of the transformer.
对于同样参数的变压器, 图 3所示实施例与图 2所示的现有技 ^ f比, 具有以下优点:  For a transformer of the same parameters, the embodiment shown in Fig. 3 has the following advantages over the prior art shown in Fig. 2:
1 )通过将调压线圏套 * 铁心旁柱上,解决了由于引出线复杂 而造成的电场分布不均匀、 易于产生局放的问题, 大幅提高了产品 一次性试^ it过率。  1) By arranging the pressure regulating line on the side of the iron core, the problem of uneven distribution of the electric field due to the complicated lead wire and easy to generate partial discharge is solved, and the one-off test rate of the product is greatly improved.
2 )变压器的宽度可下降 9 %, 便于运输。  2) The width of the transformer can be reduced by 9 % for easy transportation.
3 )简化线圏绕制工艺, 降低成本。  3) Simplify the wire winding process and reduce costs.
根据本发明另一具体实施例, 铁心主柱 1、 第一铁心旁柱 2和 第二铁心旁柱 3的横截面为直径相同的圆形。  According to another embodiment of the present invention, the core main column 1, the first core side column 2, and the second core side column 3 have a circular cross section of the same diameter.
由于第一铁心旁柱 2的横截面为圆形, 因此可以直接将圆形的 励磁线圏 21和调压线圏 12由内向外依次套接在第一铁心旁柱 2上。  Since the cross section of the first core side column 2 is circular, the circular field line 21 and the pressure regulating line 12 can be directly sleeved on the first core side column 2 from the inside to the outside.
图 4为本发明单相变压器另一实施例的俯视图。 如图 4所示, 和图 3所示实施例相比, 第一铁心旁柱 2和第二铁心旁柱 3的横截 面为椭圆形, 并且该椭圆形的长轴与铁心主柱 1的圆形横截面的直 径大小相同。 4 is a top plan view of another embodiment of a single phase transformer of the present invention. As shown in Figure 4, Compared with the embodiment shown in FIG. 3, the cross section of the first core side pillar 2 and the second core side pillar 3 is elliptical, and the major axis of the ellipse and the diameter of the circular cross section of the core main pillar 1 are the same.
通过将第一铁心旁柱 2和第二铁心旁柱 3的横截面由圆形变换为 椭圆形, 可以使变压器中的铁轭变短, 减少铁心中硅钢片的使用量, 有效降低空载损耗和负载损耗。 同时通过确保上述椭圆形的长轴与 所述圆形的直径大小相同, 可以有效避免磁通量的损失。  By changing the cross section of the first core side pillar 2 and the second core side pillar 3 from a circular shape to an elliptical shape, the iron yoke in the transformer can be shortened, the use amount of the silicon steel sheet in the iron core can be reduced, and the no-load loss can be effectively reduced. And load loss. At the same time, by ensuring that the long axis of the elliptical shape is the same as the diameter of the circular shape, the loss of magnetic flux can be effectively avoided.
根据本发明一个具体实施例, 第一铁心旁柱 2和第二铁心旁柱 3 的椭圆形横截面的面积大于铁心主柱 1的圆形横截面的面积的一半。 优选地, 第一铁心旁柱 2和第二铁心旁柱 3的椭圆形横截面面积为铁 心主柱 1的圆形横截面面积的 53 %。  According to a specific embodiment of the invention, the elliptical cross-section of the first core side column 2 and the second core side column 3 has an area larger than half the area of the circular cross section of the core main column 1. Preferably, the elliptical cross-sectional area of the first core side column 2 and the second core side column 3 is 53% of the circular cross-sectional area of the core main column 1.
如图 4所示, 为了能够将调压线圏 12和励磁线圏 21套装在横 截面为椭圆形的第一铁心旁柱 2上, 可以为第一铁心旁柱 2加装一 个圆柱形支撑架 22, 用于套装在第一铁心旁柱上。 圆柱形支撑架 22 在轴向方向上设置有横截面为椭圆形的通孔, 以便能够套装在第一 铁心旁柱 2上。 励磁线圏 21和调压线圏 12由内向外依次套 * 圆 柱形支撑架上。  As shown in FIG. 4, in order to be able to fit the pressure regulating wire 12 and the field wire 21 to the first core side column 2 having an elliptical cross section, a cylindrical support frame may be added to the first core side column 2. 22, used for the set on the first core column. The cylindrical support frame 22 is provided with a through hole having an elliptical cross section in the axial direction so as to be fitted over the first core side column 2. The excitation wire 圏 21 and the pressure regulating wire 圏 12 are sequentially arranged from the inside to the outside of the * cylindrical support frame.
通过将铁心旁柱的横截面由圆形改为椭圆形, 在不影响变压器 性能的前提下, 可以有效降低变压器自身的重量, 降幅超过 1 %, 从而有效降低了成本。  By changing the cross section of the core side column from a circular shape to an elliptical shape, the weight of the transformer itself can be effectively reduced without affecting the performance of the transformer, and the reduction is more than 1%, thereby effectively reducing the cost.
图 5为本发明单相变压器另一实施例的俯视图。与图 4所示实 施例相比, 在图 5所示实施例中, 不采用支撑架的方式, 而是直接 将调压线圏 12和励磁线圏 21制成椭圆形状, 由内向外套接在第一 铁心旁柱 2上。  Figure 5 is a top plan view of another embodiment of a single phase transformer of the present invention. Compared with the embodiment shown in FIG. 4, in the embodiment shown in FIG. 5, instead of using the support frame, the pressure regulating wire 12 and the excitation wire 21 are directly formed into an elliptical shape, and the inner casing is connected. The first core is next to the column 2.
通过将调压线圏 12和励磁线圏 21制成椭圆形状, 可以有效降 低变压器的空载损耗、 降低变压器的噪声, 同时也增加了变压器的 机械强度。 在本实施例中, 可以采用现有的四圆心法制作椭圆形绕线模, 绕制出椭圆形励磁线圏 21和调压线圏 12, 按常规套装形式依次将 励磁线圏 21和调压线圏 12直接套 * 横截面为椭圆形的第一铁心 旁柱 2上。 从而在保证电气绝缘距离的前提下大幅降低铁心的中心 距、 减少油箱的长度、 减少线圏用电磁线的长度, 从而大幅度降低 硅钢片、 电磁线、 变压器油、 钢材的用量。 By making the voltage regulation line 圏12 and the excitation line 圏21 into an elliptical shape, the no-load loss of the transformer can be effectively reduced, the noise of the transformer can be reduced, and the mechanical strength of the transformer is also increased. In this embodiment, the elliptical winding mold can be fabricated by using the existing four-center method, and the elliptical excitation line 圏21 and the pressure regulating line 圏12 can be wound, and the excitation line 圏21 and the voltage regulation are sequentially performed in a conventional suit form. The turns 12 are directly sleeved* on the first core side column 2 having an elliptical cross section. Therefore, under the premise of ensuring the electrical insulation distance, the center distance of the core is greatly reduced, the length of the fuel tank is reduced, and the length of the electromagnetic wire for the wire is reduced, thereby greatly reducing the amount of the silicon steel sheet, the electromagnetic wire, the transformer oil, and the steel.
对于同样参数的变压器, 图 5所示实施例与图 4所示实施例相 比, 在保证安全性能的情况下, 可进一步降低成本, 可节省铜 0.5 吨、 硅钢片 2.7 «t、 变压器油 6.2吨、 钢材 2.2 «t, 与图 4所示实施 例相比, 成本可下降 3.7 %。  For the transformer with the same parameters, compared with the embodiment shown in Fig. 4, the embodiment shown in Fig. 5 can further reduce the cost under the condition of ensuring safety performance, and can save copper 0.5 ton, silicon steel sheet 2.7 «t, transformer oil 6.2 Tons, steel 2.2 «t, compared to the embodiment shown in Figure 4, the cost can be reduced by 3.7%.
最后应当说明的是: 以上实施例仅用以说明本发明的技术方 案而非对其限制; 尽管参照较佳实施例对本发明进行了详细的说 明, 所属领域的普通技术人员应当理解: 依然可以对本发明的具 体实施方式进行修改或者对部分技术特征进行等同替换; 而不脱 离本发明技术方案的精神, 其均应涵盖在本发明请求保护的技术 方案范围当中。  It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that The invention is not limited to the spirit of the technical solutions of the present invention, and should be included in the scope of the technical solutions claimed in the present invention.

Claims

1. 一种单相变压器, 其特征在于, 包括: 铁心主柱、 第一铁 心旁柱和第二铁心旁柱, 其中在铁心主柱上由内向外依次套装有低 压线圏、 中压线圏和高压线圏, 在第一铁心旁柱上由内向外依次套 装有励磁线圏和调压线圏, 励磁线圏与套装在铁心主柱上的中压线 圏并联, 以调节调压线圏的电压。 A single-phase transformer, comprising: a core main column, a first core side column, and a second core side column, wherein a low-voltage line and a medium-voltage line are arranged on the main core of the core from the inside to the outside. And the high-voltage coil 圏, the excitation line 圏 and the pressure-regulating line 套装 are arranged on the first core side column from the inside to the outside, and the excitation line 圏 is connected in parallel with the medium-voltage line 套装 set on the main core of the iron core to adjust the pressure-regulating line 圏Voltage.
2. 如权利要求 1所述的单相变压器, 其特征在于, 所述铁 心主柱的横截面为圆形, 所述第一铁心旁柱和第二铁心旁柱的横截 面均为椭圆形,并且所述椭圆形的长轴与所述圆形的直径大小相同。  2. The single-phase transformer according to claim 1, wherein the core main column has a circular cross section, and the first core side pillar and the second core side pillar have an elliptical cross section. And the major axis of the ellipse is the same as the diameter of the circle.
3. 如权利要求 2所述的单相变压器, 其特征在于, 所述椭 圆形的面积大于所述圆形面积的一半。  3. The single phase transformer of claim 2 wherein the area of the ellipse is greater than one-half of the area of the circle.
4. 如权利要求 2或 3所述的单相变压器, 其特征在于, 单 相变压器还包括圆柱形支撑架, 用于套装在第一铁心旁柱上, 其中 圆柱形支撑架在轴向方向上设置有横截面为椭圆形的通孔, 励磁线 圏和调压线圏由内向外依次套 * 圆柱形支撑架上。  4. The single-phase transformer according to claim 2 or 3, wherein the single-phase transformer further comprises a cylindrical support frame for fitting on the first core side column, wherein the cylindrical support frame is in the axial direction A through hole having an elliptical cross section is provided, and the exciting wire and the pressure regulating wire are sequentially arranged from the inside to the outside on the cylindrical support frame.
5. 如权利要求 2或 3所述的单相变压器, 其特征在于, 励 磁线圏和调压线圏为椭圆形, 由内向外依次套装在第一铁心旁柱 上。  The single-phase transformer according to claim 2 or 3, characterized in that the field windings and the voltage regulating line 圏 are elliptical, and are arranged on the first core side column from the inside to the outside.
6. 如权利要求 1所述的单相变压器, 其特征在于, 所述铁 心主柱、第一铁心旁柱和第二铁心旁柱的横截面为直径相同的圆形。  The single-phase transformer according to claim 1, wherein a cross section of the core main column, the first core side pillar, and the second core side pillar is a circular shape having the same diameter.
PCT/CN2012/076206 2011-11-30 2012-05-29 Single phase transformer WO2013078845A1 (en)

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CN102403106B (en) * 2011-11-30 2014-03-05 国家电网公司 Single-phase transformer
CN103515072B (en) * 2013-10-28 2016-01-27 三变科技股份有限公司 A kind of two high pressure on-load voltage regulation single-phase testing transformer
CN106783058A (en) * 2016-12-29 2017-05-31 山东驰翔电气有限公司 A kind of single-phase voltage transformer body structure
CN112951560A (en) * 2021-03-22 2021-06-11 保定天威保变电气股份有限公司 Single-phase generator transformer with variable low-voltage rated voltage and method

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