CN201689766U

CN201689766U - Transformer with open coiled core

Info

Publication number: CN201689766U
Application number: CN201020160121XU
Authority: CN
Inventors: 于冀江
Original assignee: Guangdong Guangte Electric Co Ltd
Current assignee: JIANGSU GUANGTE ELECTRIC CO., LTD.
Priority date: 2010-04-15
Filing date: 2010-04-15
Publication date: 2010-12-29
Anticipated expiration: 2020-04-15

Abstract

The utility model provides a transformer with an open coiled core, which comprises a core consisting of a plurality of laminated silicon steel sheet layers by coiling. A joint area is arranged on the coiled core, each silicon steel sheet layer in the joint area is provided with joints, the silicon steel sheet layers are in butt connection through the joints, and the section of the core after butt connection is rectangular. By adopting the scheme, use amount of the cores during manufacturing depends on phases of a transformer, for example, a three-phase transformer adopts four cores, the window widths of iron cores on two sides are smaller than the window width of the iron core in the middle so that the coiled transformer saves larger space, the transformer reduces no-load loss while avoiding opening of the joint area and the like due to the fact that the joints of the joint area are in mutual butt connection in a staggered manner, and when a winding of one phase is failed during use, the winding can be replaced by opening the connection area on the iron core of the corresponding phase without detaching the whole transformer.

Description

A kind of transformer of open type volume iron core

Technical field:

The utility model relates to the distribution transformer technical field, refers in particular to a kind of transformer of open type volume iron core.

Background technology:

Transformer is the device of conversion alternating voltage, electric current and impedance, and transformer is by iron core

Form, coil has two or more windings, and the winding that wherein connects power supply is primary coil, and remaining winding is secondary coil.When being connected with alternating current in the elementary coil, iron core or magnetic core produce exchange flux, make and induce voltage or electric current in the secondary coil.And the transformer fe cored structure is the plane laminated core mostly at present, the plane volume is unshakable in one's determination, three-dimensional volume iron core or non-crystaline amorphous metal formula, wherein, the consumptive material of plane laminated core is many, the no-load loss height, costing an arm and a leg of non-crystaline amorphous metal formula iron core, processing technology is had relatively high expectations, be not suitable for mass production, plane and three-dimensional volume iron core are enclosed mostly, and its manufacturability is poor, and are coilings separately on the iron core of sealing during coiling, its coiling difficulty is big, production efficiency is low, and in the use in case some windings go wrong, just whole winding all must be removed, thus, maintenance difficulty and maintenance cost have been increased greatly.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of easy to maintenance, the transformer open type volume iron core that adopts the open seam formula to make.

For achieving the above object, technical scheme provided by the utility model is a kind of transformer of open type volume iron core, it includes iron core, described iron core is rolled after overlapping by the multilayer silicon steel sheet and forms, iron core after rolling is provided with seam region, be equipped with the seam mouth on every layer of silicon steel sheet in the seam region, and by the butt joint of seam mouth, the core section after the butt joint is a rectangle.

Seam mouth between the described adjacent silicon steel disc is a stairstepping.

Described silicon steel sheet thickness is less than 0.2mm.

Described iron core is four, and mutually closely contact is in line, and wherein, the core window width of both sides is less than the core window width of centre.

The utility model is after having adopted such scheme, during making, the usage quantity of iron core is looked the number of phases decision of transformer, for example: what three-phase transformer adopted is four iron cores, wherein, core window width in the middle of the core window width of both sides is less than, make the transformer after the coiling save bigger space, again that winding is good coil is linked on the iron core, and then the seam mouth docked, iron core outermost layer silicon steel sheet seam mouth is welded, because the seam mouth of seam region is to adopt the mutual dislocation butt joint, so when reducing no-load loss, seam region situation such as can not pop, when the winding of a certain phase in the use breaks down, only the join domain that need open on the respective phase iron core can be changed winding, need not maintenance difficulty has been saved in whole transformer dismounting greatly, and reduced maintenance cost, improved maintenance speed.

Description of drawings:

Fig. 1 is an overall structure schematic diagram of the present utility model.

Fig. 2 is the structural representation of the utility model iron core after connecting.

Fig. 3 is the schematic diagram after amplify at the A place among Fig. 1.

Reference numeral: 1-iron core, 2-seam region, 3-seam mouth.

Embodiment:

The utility model is described in further detail to accompanying drawing 3 below in conjunction with accompanying drawing 1, preferred embodiment of the present utility model is: the transformer of the described a kind of open type volume iron core of present embodiment, it includes iron core 1, when making, the usage quantity of iron core is looked the number of phases decision of transformer, and for example: what three-phase transformer adopted is four iron cores, the iron core 1 of this programme transformer is four, and closely contact is in line mutually, and wherein, iron core 1 window width of both sides is less than iron core 1 window width of centre.Again that winding is good coil is linked on the iron core 1, described iron core 1 is rolled after overlapping less than the silicon steel sheet of 0.2mm by multi-layered thickness and forms, iron core 1 after rolling is provided with seam region 2, be equipped with seam mouth 3 on every layer of silicon steel sheet in the seam region 2, seam mouth 3 between the adjacent silicon steel disc is a stairstepping, and it is for staggered joint that the seam mouth between each layer adopts the stairstepping mode, and by 3 butt joints of seam mouth, iron core 1 cross section after the butt joint is a rectangle, and it is shaped as the rectangle that has fillet.After finishing, the coil fit docks by the silicon steel sheet of seam mouth 3 with iron core 1, with 3 welding of the 1 outermost layer silicon steel sheet seam mouth of the iron core after the butt joint, because the seam mouth 3 of seam region 2 is to adopt the mutual dislocation butt joint, so situations such as the seam region after the butt joint can not pop, simultaneously can reduce no-load loss, when the winding of a certain phase in the use breaks down, only the join domain 2 that need open on the respective phase iron core 1 can be changed winding, need not whole transformer dismounting, saved maintenance difficulty greatly, and reduced maintenance cost, improved maintenance speed.

The embodiment of the above is the preferred embodiment of the utility model only, is not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection range of the present utility model.

Claims

1. the transformer of open type volume iron core, it includes iron core (1), it is characterized in that: described iron core (1) is rolled after overlapping by the multilayer silicon steel sheet and forms, iron core after rolling (1) is provided with seam region (2), be equipped with seam mouth (3) on every layer of silicon steel sheet in the seam region (2), and by seam mouth (3) butt joint, the iron core after the butt joint (1) cross section is a rectangle.

2. the transformer of a kind of open type volume iron core according to claim 1, it is characterized in that: the seam mouth (3) between the adjacent silicon steel disc is a stairstepping.

3. the transformer of a kind of open type volume iron core according to claim 1, it is characterized in that: silicon steel sheet thickness is less than 0.2mm.

4. the transformer of a kind of open type volume iron core according to claim 1, it is characterized in that: iron core (1) is four, and mutually closely contact be in line, wherein, the iron core of both sides (1) window width is less than iron core (1) window width of centre.