The amorphous alloy transformer core of 3-D triangle structure
Technical field
The present invention relates to a kind of amorphous alloy transformer of 3-D triangle structure, especially a kind of manufacture method of amorphous alloy transformer core of 3-D triangle structure.
Background technology
Present prior art, energy-conservation is the requisite state basic policy that China builds a conservation-minded society, because amorphous alloy transformer has the considerable energy saving environmental-protecting performance, is progressively accepted by users, becomes desirable distribution transformer of new generation.The used iron core of amorphous alloy transformer that occurs in the market has three-phase five-limb and three-phase three-column plane formula volume iron core; The amorphous alloy transformer core cross section of these two kinds of planar structures is a rectangle; Core volume is big, weight is high, long processing time, and the transformer size design receives the restriction of non-crystaline amorphous metal sheet material width easily; Manufacture and design dumbly, above in addition two kinds of amorphous alloy iron core costs are also higher.
Analyze from principle, the iron core of three-phase five-limb and three-phase three-limb structure all is a planar structure, and the length of magnetic path that can form each stem does not wait; Three phase supply can not guarantee balance; And there is seam at upper yoke or lower yoke, the high energy consumption district can occurs, can not give full play to the high magnetic conduction characteristics of amorphous alloy strips at seam crossing; The air-gap that seam crossing forms also will increase corresponding loss, and it is poor that the iron core of rectangular configuration and transformer coil have also caused the anti-short circuit capability of product in addition.
Summary of the invention
The objective of the invention is: a kind of amorphous alloy transformer core of 3-D triangle structure is provided, and it reduces traditional amorphous alloy transformer core cost, and improves the defective that the product of traditional structure exists on performance.
This present invention is achieved in that a kind of amorphous alloy transformer core of 3-D triangle structure; It is made up of the rectangle single frame amalgamation of three identical cross section semicirculars in shape, and each single frame is to be rolled continuously from inside to outside by some trapezoidal non-crystaline amorphous metal strips to form.
The amorphous alloy transformer core of described 3-D triangle structure, its special character are that described amorphous alloy iron core heart column section is rounded.
The amorphous alloy transformer core of a kind of 3-D triangle structure of the present invention; Structurally; The amorphous alloy transformer core of 3-D triangle structure is handled through special process after by three identical cross section approximate half-circular single frame amalgamations again and is formed; Three-phase heart column section after the amalgamation is near circular, and each single frame is to be rolled closely successively by several kinds of trapezoidal non-crystaline amorphous metal strips that to form a cross section be semicircular whole frame type.Compare with the amorphous alloy iron core of above traditional structure: the iron yoke weight of this kind structure reduces more than 20%, and iron core angle heavy and light significantly reduces the consumption of amorphous alloy material; The iron yoke place of this kind iron core can not be provided with seam, need not to open with more closed, and transformer coil can directly be wound on the stem, and production and processing is few man-hour, has improved efficiency.
On performance, the magnetic conduction direction of this kind non-crystaline amorphous metal strip and the magnetic circuit direction of iron core are in full accord, during work vibration little, can improve the noise problem of traditional non-crystaline amorphous metal greatly; The three-phase magnetic circuit of iron core symmetry fully is isometric, can guarantee the balance of three phase supply, and magnetic resistance is significantly reduced, and exciting curent significantly reduces; The amorphous alloy transformer core of 3-D triangle structure iron yoke place again can not have seam, does not have the highly energy-consuming district, can give full play of the characteristics of the high magnetic conduction of non-crystaline amorphous metal, the loss that the air-gap that maximum minimizing forms because of seam crossing brings; No-load loss is directly proportional with iron core weight, so the amorphous alloy transformer core no-load loss of 3-D triangle structure can descend significantly; This kind amorphous alloy transformer core cross section approximate circle shape, coil is a circular configuration simultaneously, and the anti-short circuit capability of amorphous alloy transformer is improved greatly.
Description of drawings
Fig. 1 is the front view of the trapezoidal strip of the present invention.
Fig. 2 is that single frame of the present invention rolls.
Fig. 3 is a single frame front view of the present invention.
Fig. 4 is A-A cutaway view of Fig. 3.
Fig. 5 is the stereogram of single frame of the present invention.
Fig. 6 is a vertical view before single frame of the present invention merges.
Fig. 7 is the vertical view of the three-dimensional amorphous alloy iron core of the present invention.
Fig. 8 is the stereogram of the three-dimensional amorphous alloy iron core of the present invention.
Embodiment
Below in conjunction with accompanying drawing this present invention is further described.
As shown in Figure 1, a kind of amorphous alloy transformer core of 3-D triangle structure, it is made up of the rectangle single frame amalgamation of three identical cross section semicirculars in shape, and each single frame is to be rolled continuously from inside to outside by some trapezoidal non-crystaline amorphous metal strips to form.
Described amorphous alloy iron core heart column section is rounded.
According to the following steps:
(1) cut-parts
Material adopts amorphous alloy strips thickness to be generally 0.025mm, the rectangle non-crystaline amorphous metal strip of fixed width is cut into the trapezoidal strip of some specifications as shown in Figure 1 according to designing requirement;
(2) reel
As shown in Figure 2; Do interior support with rectangular module 1, get around the beginning, trapezoidal strip is successively reeled by the inboard from starting laterally from the level 1 volume of single frame; And strip is advanced according to the direction that is provided with on the up-coiler of special use, be wound into the outward-dipping shape of upper/lower terminal; Reeled behind the 1st grade of required thickness, reel the 2nd grade thickness of the trapezoidal strip of then using another kind of size again instead at the 1st grade skin is according to what thickness of having reeled required successively with quadrat method; If the progression of a single frame is 7 grades, then need the trapezoidal strip of 7 kinds of sizes, the strip of the next stage width dimensions of starting is exactly the width dimensions of upper level strip tail head, every grade variable thickness phasing etc.; Fig. 3 is the single frame front view after accomplishing, and Fig. 4 is the cross section view of single frame, and Fig. 5 is the end view of single frame.
(3) assembling
A complete amorphous alloy iron core need be made up of 3 identical single frames as shown in Figure 32; Because two heart column sections of each single frame 2 are semicircle; The stem of 3 single frames 2 is drawn close merging and fixing; The circular stem 3 of then forming iron core, the 3-D triangle amorphous alloy iron core vertical view after the merging is as shown in Figure 7.Among Fig. 8, the 5th, upper yoke, the 4th, lower yoke.
(4) annealing
With accomplishing annealing process in the tridimensional triangle iron core propelling annealing furnace that assembles, eliminate internal stress, recover magnetic, further improve the performance of iron core;
(5) moulding
Carry out colligation with the stem of insulated binding band after behind the position, iron core school, make iron core become a firm integral body amalgamation, as shown in Figure 8.
Fig. 8 is the amorphous alloy transformer core stereogram of final 3-D triangle structure; 8 is visible from figure; Three stems of iron cores are formed in three single frame amalgamations, and three stems are three-dimensional triangular arranged, and the heart column section after the amalgamation is very the accurate polygon near full circle.
Amorphous alloy strips thickness is generally 0.025mm, and material is hard and crisp, and the present invention takes special process, instrument and equipment, has overcome amorphous alloy strips and has been difficult to shear the difficulty that is difficult to make with three-dimensional amorphous alloy iron core.
Above-described only is this present invention's preferential execution mode.Should be pointed out that for the person of ordinary skill of the art under the situation that does not break away from this principle of the invention, can also make some improvement and modification, this also is regarded as this protection scope of the present invention.