CN2459743Y

CN2459743Y - Core structure for three-phase oil-immersed non-crystalline transformer

Info

Publication number: CN2459743Y
Application number: CN 01212922
Authority: CN
Inventors: 师树军
Original assignee: XI'AN NON-CRYSTALLINE SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: XI'AN NON-CRYSTALLINE SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2001-01-10
Filing date: 2001-01-10
Publication date: 2001-11-14
Anticipated expiration: 2011-01-10

Abstract

The utility model relates to a core structure for three-phase oil-immersed non-crystalline transformer. The adopts a square coil with an inner concave to shorten the width of the coil and insulating partition boards which are alternatively used are insulated, which makes the width of the core shortened, the purpose of the using amount of non-crystalline alloy core reduction and product cost reduction realized, and the processing of products easier and safer. The structure can be applied to the field of a non-crystalline electric appliance product with the square coil.

Description

Three-phase oil immersion formula amorphous alloy distribution transformer device cored structure

The utility model relates to a kind of three-phase oil immersion formula amorphous alloy distribution transformer device cored structure.

Amorphous alloy distribution transformer is a kind of novel energy-conserving transformer, and he utilizes amorphous alloy material to substitute traditional silicon steel sheet and makes iron core, thereby the no-load loss of transformer is significantly reduced, and realizes purpose of energy saving.At present the device core of three-phase oil immersion formula amorphous alloy transformer has four side by side and the amorphous alloy iron core of row, two adjacent iron core side mutual group become a square column, form three square columns altogether, three square coils are enclosed within three square columns, utilize electromagnetic induction principle to change the voltage of circuit.For example the three-phase oil immersion formula amorphous alloy distribution transformer of China Wujiang City, Jiangsu Province transformer factory production has disclosed this structure.But in present device cored structure, have such problem, the one, though coil design is square, but when coiling because the effect of wire tension, four sides of coil are actually outside protrusion, and because the side of the mold of coiling mould also is square, the evagination part of coil can't be eliminated, thereby actual produced coil is spirogyrate side's coil, this just greatly increased the profile width of coil, for guaranteeing coil mutually noninterfere when assembling, make that the square hole width in the middle of the iron core must strengthen, the width of iron core has also just increased.The 2nd, the employing air insulation between phase and phase of winding for guaranteeing insulating requirements, leaves bigger phase spacing, and this also just certainly will increase the width of iron core.The increase of iron core width cause the consumption of amorphous alloy iron core to increase, and the price of non-crystaline amorphous metal is higher, thereby is caused the cost of transformer higher, makes that the user is difficult to accept, and causes applying of this novel product to be subjected to serious obstruction.

The purpose of this utility model just provides a kind of improved device cored structure, and it can reduce the amorphous alloy iron core consumption effectively, thereby reduces product cost, and makes that product processing is more prone to, safety.

The purpose of this utility model is achieved in that it has comprised the upper clamping piece in the accompanying drawing [1], amorphous iron core [2], square coil [3], insulating barrier [4], cushion block [5], nut [6], screw rod [7], lower clamping piece [8], stay [9], right baffle-plate [10], mold [11] and right baffle plate [12].Side's coil [3] manufactures the square structure of band indent.The profile of indent coil is narrower than the evagination, be enclosed within square coil [3] in the amorphous iron core [2] transversely arranged the time when three, narrower concave inward structure has shortened the overall width of coil, thereby shortened the overall width of four iron cores, that is the width of each iron core all obtained decline, and the consumption of each iron core has all obtained minimizing.The concave inward structure of side's coil [3] is to realize when the coiling by the concave structure on coiling mould mold body [11] surface, makes that by knocking of wooden mallet the middle part of four sides of coil is recessed when promptly winding the line.In addition, adopt insulating barrier [4] insulation between two two sides of the coil of the side of being between phase and phase [3] of three phase windings.Owing to adopted barrier insulation, the phase spacing of the phase spacing of three windings during than air insulation is little, and the overall width that this has just shortened coil, the overall width that makes iron core are that the consumption of iron core obtains reducing.

Below in conjunction with accompanying drawing and example the utility model is further described.

Fig. 1 is the structural representation of the utility model device core.

Fig. 2 is the shape schematic diagram of square coil [3] in the structure shown in Figure 1.

Fig. 3 is a coiling mould structure schematic diagram used when square coil [3] is made in the structure shown in Figure 1.

Fig. 4 is the assembly relation schematic diagram of square coil [3] and amorphous iron core [2] in the structure shown in Figure 1.

The described device cored structure of Fig. 1 has omitted accessories sections such as lead-in wire.The side coil [3] be enclosed within on the amorphous iron core [2], by stay [9] with square coil [3] and amorphous iron core [2] stretching.Amorphous iron core [2] is outstanding to be placed in the groove of upper clamping piece [1] and lower clamping piece [8].Side's coil [3] has an insulating barrier [4] between any two.The upper and lower end face of side's coil [3] respectively is lined with cushion block [5], the other end of cushion block [5] contacts with the end face of upper clamping piece [1] with lower clamping piece [8] respectively, screw rod [7] passes upper clamping piece [1] and lower clamping piece [8], when nut [6] is tightened on screw rod [7], square coil [3] and amorphous iron core [2] are fixed tightly in upper clamping piece [1] and the lower clamping piece [8] by upper clamping piece [1], lower clamping piece [8] and cushion block [5].

Square coil [3] shown in Figure 2, its concave inward structure are to realize by the concave structure of coiling mould shown in Figure 3.Four sides of mold among Fig. 3 [11] all are spills, the end face of mold [11] is close together with left plate washer [10] and right plate washer [12] respectively, main shaft during coiling on the coil winding machine passes the centre bore of coiling mould, is fastened on the coil winding machine by the nut mould that will wind the line.Because the outer surface of mold [11] is a spill, can be when coiling by making that with knocking of wooden mallet the middle part on each limit of square coil is recessed around one side on one side, the profile that has so just guaranteed coil no longer is an evagination, thereby realize to reduce coil width and and then reduce the purpose of iron core width.

How the reduction that Fig. 4 further illustrates the iron core consumption realizes.Side's coil [3] is by packing into behind the overlap joint mouth of opening amorphous iron core [2] top in the amorphous iron core [2], and square coil [3] is placed with insulating barrier [4] between any two.Because the profile of square coil [3] is narrower than evagination coil, promptly size B is less, and just size M is less, makes that the square hole width dimensions L of amorphous iron core [2] is descended.In addition, adopt barrier insulation between the coil after, spaced apart is little during than air insulation apart from N between coil and the coil, makes that also the width L of iron core is descended.The reduction of iron core width makes the consumption of iron core reduce.

The utility model is because coil is a spill, and the actual outer dimensions of coil obtains reducing, and alternate employing barrier insulation has reduced phase spacing, thereby the iron core width is reduced simultaneously, and the iron core consumption obtains descending, and product cost significantly reduces.For example, be the amorphous transformer of 100KVA with the capacity of the utility model production, the amorphous iron core consumption is 230 kilograms, and the consumption of other like product is generally more than 270 kilograms, and the amorphous consumption has reduced more than 15%, and product cost is compared and has been descended more than 20%.In addition, the processing of spill coil makes the overall dimension of coil be easy to control more, and processing is more prone to.Lighter iron core makes the labour intensity of assembling descend again, assembles convenient, safety.

Claims

1. three-phase oil immersion formula amorphous alloy distribution transformer device cored structure, it has comprised upper clamping piece [1], amorphous iron core [2], square coil [3], insulating barrier [4], cushion block [5], nut [6], screw rod [7], lower clamping piece [8], stay [9], right baffle-plate [1 0], mold [11] and right baffle plate [12], the side's of it is characterized in that coil [3] manufactures the square structure of band indent, adopts insulating barrier [4] insulation between two two sides of square coil [3].

2. according to the described structure of claim 1, the concave inward structure of the side's of it is characterized in that coil [3] is that the concave structure by the coiling mould is realized when coiling.

3. according to claim 1,2 described structures, four sides of the mold [11] of the mould that it is characterized in that winding the line all are spills.