CN204668121U - The non-magnetic arm-tie of a kind of traction transformer - Google Patents
The non-magnetic arm-tie of a kind of traction transformer Download PDFInfo
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- CN204668121U CN204668121U CN201520365000.1U CN201520365000U CN204668121U CN 204668121 U CN204668121 U CN 204668121U CN 201520365000 U CN201520365000 U CN 201520365000U CN 204668121 U CN204668121 U CN 204668121U
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- eddy current
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- traction transformer
- pull plate
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Abstract
本实用新型公开了一种牵引变压器非导磁拉板，拉板本体的中部设有多条纵向的隔涡流槽孔，多条隔涡流槽孔等间隔平行布置；所述隔涡流槽孔为间断槽，每条隔涡流槽孔上均设有多个连接段；相邻两条隔涡流槽孔的连接段相互错开。拉板本体与铁芯和夹件相接触的表面上均设有绝缘层。本实用新型涡流损耗小、发热少，强度高。
The utility model discloses a non-magnetic pull plate for a traction transformer. The middle part of the pull plate body is provided with a plurality of vertical eddy current isolation slots, and the plurality of eddy current isolation slots are arranged in parallel at equal intervals; the eddy current isolation slots are intermittent A plurality of connecting sections are arranged on each eddy current isolating slot; the connecting sections of two adjacent eddy current isolating slots are staggered from each other. An insulating layer is provided on the surface of the pull plate body in contact with the iron core and the clip. The utility model has small eddy current loss, less heat generation and high strength.
Description
技术领域technical field
本实用新型涉及一种牵引变压器非导磁拉板。The utility model relates to a non-magnetic conducting pull plate of a traction transformer.
背景技术Background technique
电磁感应作用在导体内部感生的电流。又称为傅科电流。导体在磁场中运动，或者导体静止但有着随时间变化的磁场，或者两种情况同时出现，都可以造成磁力线与导体的相对切割。按照电磁感应定律，在导体中就产生感应电动势，从而驱动电流。这样引起的电流在导体中的分布随着导体的表面形状和磁通的分布而不同，其路径往往有如水中的漩涡，因此称为涡流。导体在非均匀磁场中移动或处在随时间变化的磁场中时，因涡流而导致能量损耗称为涡流损耗。涡流损耗的大小与磁场的变化方式、导体的运动、导体的几何形状、导体的磁导率和电导率等因素有关。Electromagnetic induction is the current induced in a conductor. Also known as Foucault current. A conductor moving in a magnetic field, or a conductor stationary but with a time-varying magnetic field, or both, can cause the relative cutting of the magnetic lines of force and the conductor. According to the law of electromagnetic induction, an induced electromotive force is generated in a conductor to drive a current. The distribution of the current in the conductor caused by this is different with the surface shape of the conductor and the distribution of the magnetic flux, and its path is often like a vortex in water, so it is called an eddy current. When a conductor moves in a non-uniform magnetic field or is in a time-varying magnetic field, the energy loss caused by eddy currents is called eddy current loss. The size of the eddy current loss is related to the change mode of the magnetic field, the movement of the conductor, the geometric shape of the conductor, the magnetic permeability and electrical conductivity of the conductor and other factors.
牵引变压器是特种变压器中的特种变压器，其使用具有振动和强电磁环境，而本身具有电源谐波大，阻抗高，过负载能力强等特点，因此牵引变压器具有很大的漏磁场存在。普通的碳钢铁芯拉板由于导磁率高，在交变的牵引变压器漏磁场中损耗非常大发热严重，甚至发热产生的高温烧损变压器绝缘而导致牵引变压器烧损的故障发生，不适合用于牵引变压器。The traction transformer is a special transformer among the special transformers. It is used in a vibration and strong electromagnetic environment, and it has the characteristics of large power harmonics, high impedance, and strong overload capacity. Therefore, the traction transformer has a large leakage magnetic field. Due to the high magnetic permeability of the ordinary carbon steel core pull plate, the loss is very large in the alternating traction transformer leakage field, and the heat is serious, and even the high temperature generated by the heat will burn the insulation of the transformer and cause the failure of the traction transformer to burn out, so it is not suitable for use Traction transformer.
因此，有必要设计一种涡流损耗小、发热少的牵引变压器非导磁拉板。Therefore, it is necessary to design a traction transformer non-magnetic puller with low eddy current loss and low heat generation.
实用新型内容Utility model content
本实用新型所要解决的技术问题是，针对现有技术的不足，提供一种牵引变压器非导磁拉板，涡流损耗小、发热少，强度高。The technical problem to be solved by the utility model is to provide a non-magnetic pull plate for traction transformers, which has low eddy current loss, less heat generation and high strength, aiming at the deficiencies of the prior art.
本实用新型的技术解决方案如下：The technical solution of the utility model is as follows:
一种牵引变压器非导磁拉板，拉板本体1的中部设有多条纵向的隔涡流槽孔2，多条隔涡流槽孔2等间隔平行布置；所述隔涡流槽孔2为间断槽【间断槽是指由多段同槽轴的小槽组成槽】，每条隔涡流槽孔2上均设有多个连接段；相邻两条隔涡流槽孔2上的连接段相互错开。A non-magnetic pull plate of a traction transformer. The middle part of the pull plate body 1 is provided with a plurality of longitudinal eddy current isolation slots 2, and the plurality of eddy current isolation slots 2 are arranged in parallel at equal intervals; the eddy current isolation slots 2 are intermittent slots [Intermittent groove refers to a groove composed of multiple small grooves with the same groove axis], each vortex-isolated slot 2 is provided with multiple connecting sections; the connecting sections on two adjacent vortex-isolated slots 2 are staggered from each other.
所述隔涡流槽孔2上设有两个连接段。The vortex blocking slot 2 is provided with two connecting sections.
所述拉板本体1与铁芯5和夹件4相接触的表面上均设有绝缘层。An insulating layer is provided on the surface of the pull plate body 1 that is in contact with the iron core 5 and the clip 4 .
拉板本体1的两端均设有拉板固定孔3。Both ends of the pull plate body 1 are provided with pull plate fixing holes 3 .
所述拉板本体1为奥氏体不锈钢拉板。The drawing plate body 1 is an austenitic stainless steel drawing plate.
有益效果：Beneficial effect:
本实用新型涡流损耗小、发热少。拉板在牵引变压器漏磁方向的中部设有多条纵向的隔涡流槽孔，多条隔涡流槽孔等间隔平行布置；隔涡流槽孔为间断槽，隔涡流槽孔上设有多个连接段；相邻两条隔涡流槽孔上的连接段相互错开。隔涡流槽孔布置方式保证了铁芯拉板在任一横截面上都有一定数量的隔涡流槽孔，有效避免了在涡流损耗集中的部位易产生局部过热的问题，使得拉板产生的损耗可以忽略不计；而且拉板采用高牌号奥氏体不锈钢板，其本身导磁率极低，因此变压器中的漏磁通在拉板中的磁通量很小，所产生的损耗极小。The utility model has small eddy current loss and less heat generation. The pull plate is provided with a plurality of longitudinal eddy current isolation slots in the middle of the traction transformer magnetic flux leakage direction, and the plurality of eddy current isolation slots are arranged in parallel at equal intervals; the eddy current isolation slots are intermittent slots, and there are multiple connection segment; the connecting segments on two adjacent eddy current isolation slots are staggered from each other. The layout of the eddy current isolation slots ensures that the iron core pull plate has a certain number of eddy current isolation slots on any cross section, which effectively avoids the problem of local overheating in the part where the eddy current loss is concentrated, so that the loss caused by the pull plate can be reduced. Negligible; and the drawing plate is made of high-grade austenitic stainless steel plate, which has extremely low magnetic permeability, so the leakage flux in the transformer has a very small magnetic flux in the drawing plate, and the resulting loss is extremely small.
本实用新型强度高。隔涡流槽孔布置方式，有效避免了铁芯拉板横截面上因开槽造成的强度不均的问题，保证了拉板的强度。而且拉板采用高牌号奥氏体不锈钢板，机械强度比普通碳钢高，可以更加稳固地将整个变压器联接为一个整体，可以降低变压器机械噪音和适应振动环境。The utility model has high strength. The layout of the vortex isolation slots effectively avoids the problem of uneven strength caused by slotting on the cross-section of the iron core pull plate, and ensures the strength of the pull plate. Moreover, the drawing plate is made of high-grade austenitic stainless steel plate, which has higher mechanical strength than ordinary carbon steel, which can more firmly connect the entire transformer as a whole, reduce the mechanical noise of the transformer and adapt to the vibration environment.
附图说明Description of drawings
图1是本实用新型的牵引变压器非导磁拉板的结构示意图；Fig. 1 is the structural representation of the traction transformer non-magnetic conduction pull plate of the utility model;
图2是本实用新型的牵引变压器非导磁拉板的使用时安装示意图；Fig. 2 is a schematic diagram of the installation of the non-magnetic pull plate of the traction transformer of the present invention during use;
标号说明：1：拉板本体，2：隔涡流槽孔，3：拉板固定孔，4：夹件，5：铁芯。Reference numerals: 1: pull plate body, 2: eddy current isolation slot, 3: pull plate fixing hole, 4: clip, 5: iron core.
具体实施方式Detailed ways
以下将结合附图和具体实施例对本实用新型做进一步详细说明：The utility model will be described in further detail below in conjunction with accompanying drawing and specific embodiment:
如图1和图2所示，本实用新型提供了As shown in Figure 1 and Figure 2, the utility model provides
一种牵引变压器非导磁拉板，拉板本体1的中部设有多条纵向的隔涡流槽孔2，多条隔涡流槽孔2等间隔平行布置；所述隔涡流槽孔2为间断槽【间断槽是指由多段同槽轴的小槽组成槽】，每条隔涡流槽孔2上均设有多个连接段；相邻两条隔涡流槽孔2上的连接段相互错开。A non-magnetic pull plate of a traction transformer. The middle part of the pull plate body 1 is provided with a plurality of longitudinal eddy current isolation slots 2, and the plurality of eddy current isolation slots 2 are arranged in parallel at equal intervals; the eddy current isolation slots 2 are intermittent slots [Intermittent groove refers to a groove composed of multiple small grooves with the same groove axis], each vortex-isolated slot 2 is provided with multiple connecting sections; the connecting sections on two adjacent vortex-isolated slots 2 are staggered from each other.
所述隔涡流槽孔2上设有两个连接段。The vortex blocking slot 2 is provided with two connecting sections.
所述拉板本体1与铁芯5和夹件4相接触的表面上均设有绝缘层。An insulating layer is provided on the surface of the pull plate body 1 that is in contact with the iron core 5 and the clip 4 .
拉板本体1的两端均设有拉板固定孔3。Both ends of the pull plate body 1 are provided with pull plate fixing holes 3 .
所述拉板本体1为奥氏体不锈钢拉板。The drawing plate body 1 is an austenitic stainless steel drawing plate.
本实用新型的牵引变压器非导磁拉板采用高性能高牌号奥氏体不锈钢板，结构包括拉板本体1、隔涡流槽孔2。牵引变压器拉板的作用是使变压器的铁芯5、上下夹件4联接成为一个紧固的整体，拉板与铁芯5，拉板与夹件4之间均设置绝缘层。拉板本体的中部开一定数量，一定尺寸的隔涡流槽孔，相邻两条隔涡流槽孔的连接段相互错开。本实用新型的牵引变压器非导磁拉板具有强度高，不导磁，不发热的优点。The non-magnetic pull plate of the traction transformer of the utility model adopts a high-performance high-grade austenitic stainless steel plate, and the structure includes a pull plate body 1 and an eddy current isolation slot 2 . The effect of the pulling plate of the traction transformer is to connect the iron core 5 and the upper and lower clips 4 of the transformer into a fastened whole, and an insulating layer is arranged between the pulling plate and the iron core 5 , and between the pulling plate and the clips 4 . A certain number of vortex isolation slots of a certain size are opened in the middle of the pull plate body, and the connecting sections of two adjacent vortex isolation slots are staggered from each other. The traction transformer non-magnetic conduction pull plate of the utility model has the advantages of high strength, no magnetic conduction and no heat generation.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365000.1U CN204668121U (en) | 2015-06-01 | 2015-06-01 | The non-magnetic arm-tie of a kind of traction transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365000.1U CN204668121U (en) | 2015-06-01 | 2015-06-01 | The non-magnetic arm-tie of a kind of traction transformer |
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| Publication Number | Publication Date |
|---|---|
| CN204668121U true CN204668121U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365000.1U Expired - Lifetime CN204668121U (en) | 2015-06-01 | 2015-06-01 | The non-magnetic arm-tie of a kind of traction transformer |
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| Country | Link |
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| CN (1) | CN204668121U (en) |
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2015
- 2015-06-01 CN CN201520365000.1U patent/CN204668121U/en not_active Expired - Lifetime
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| GR01 | Patent grant | ||
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Granted publication date: 20150923 |
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| CX01 | Expiry of patent term |