CN200990275Y - Mine flameproof type transformer five-column core - Google Patents

Abstract

The utility model discloses a mine explosion-proof transformer five cores, which comprises a left and a right side yokes (1, 2), an upper and a lower yokes (3, 4) and a middle pole (5); the left side yoke (1), the upper yoke (3), the right side yoke (2) and the lower yoke (4) are connected from beginning to end; the middle pole (5) is arranged between the upper and the lower yokes (3, 4); the cross-section of the left and the right side yokes (1, 2) and the upper and the lower yokes (3, 4) are D-shape, and the left surface of the left side yoke (1); the right surface of the right side yoke (2), the top surface of the upper yoke (3) and the bottom surface of the lower yoke (4) are plane. The top and the bottom surfaces, the left and right surfaces of the utility model are plane; the cross-section of the upper and lower yokes and the side yoke of the iron core are D-shape; the cross-section of the middle pole is ellipse-shape. The utility model achieves the purpose of reducing the height of the iron core through the improvement, and reaches the high requirements of the big capability explosion-proof transformer transporting in the well of coal mine.

Description

5-column Core For Mine Explosion-proof Transformer

Technical field

The utility model relates to a kind of 5-column Core For Mine Explosion-proof Transformer.

Background technology

The most three pillar type iron cores of using of present flame-proof mine transformer, but, generally use the five limbs type core of rectangle iron yoke instead because big capacity flameproof transformer is subjected to the restriction of shipping height under the coal mine.Because the iron yoke is a rectangle, compressing of clamping unshakable in one's determination and coil is all difficult with realization, certainly will need to increase window height unshakable in one's determination, and this has just lost the five posts meaning highly that reduces unshakable in one's determination.

Summary of the invention

The utility model provides a kind of can reduce height and the 5-column Core For Mine Explosion-proof Transformer of being convenient to transport.

The utility model adopts following technical scheme:

A kind of 5-column Core For Mine Explosion-proof Transformer, form by left and right return yoke, upper and lower yoke and center pillar, above-mentioned left return yoke, last yoke, right return yoke, following yoke join end to end, center pillar is located between the upper and lower yoke, the cross sectional shape of left and right return yoke and upper and lower yoke is a D shape, and the lower surface of the left surface of left return yoke, the right surface of right return yoke, the upper surface of going up yoke and following yoke is the plane.

Compared with prior art, the utlity model has following advantage:

1, the utility model can reduce height unshakable in one's determination.As shown in Figure 2, equate at the sectional area of yoke up and down of iron core, under the situation that coil height equates, i.e. L1=L2, total height unshakable in one's determination of the present utility model be the iron core of circle less than the cross sectional shape of yoke up and down; With yoke cross sectional shape up and down is that the iron core of rectangle is compared, the utility model can clamp unshakable in one's determination with the insulation drawstring, compress coil with the porcelain cushion block and can not influence the height of whole iron core, and the yoke cross sectional shape is that the iron core of rectangle need be provided with independent coil compressing device up and down, so L3 is a bit larger tham L1, so total height minimum unshakable in one's determination of the present utility model.

2, the utility model is convenient to the down-hole transportation.As shown in Figure 3, in the longitudinal direction, if the coil width of cloth equates i.e.: L41=L42 to size, L51=L52, length overall L7 unshakable in one's determination is greater than L6, and promptly the utility model can reduce length unshakable in one's determination, for the flame-proof mine transformer, need carry out the down-hole transportation, after core length reduces, can reduce the radius of turn in the transportation, so the utility model is convenient to the down-hole transportation.

Description of drawings

Fig. 1 is core lamination figure.

Fig. 2 is height contrast figure unshakable in one's determination.

Fig. 3 is core length contrast figure.

Embodiment

A kind of 5-column Core For Mine Explosion-proof Transformer, form by left and right return yoke 1,2, upper and lower yoke 3,4 and center pillar 5, above-mentioned left return yoke 1, last yoke 3, right return yoke 2, following yoke 4 join end to end, center pillar 5 is located between the upper and lower yoke 3,4, the cross sectional shape of left and right return yoke 1,2 and upper and lower yoke 3,4 is a D shape, and the lower surface of the right surface of the left surface of left return yoke 1, right return yoke 2, the upper surface of going up yoke 3 and following yoke 4 is the plane, and the cross sectional shape of center pillar 5 is oval.

Claims (2)

1, a kind of 5-column Core For Mine Explosion-proof Transformer, form by left and right return yoke (1,2), upper and lower yoke (3,4) and center pillar (5), above-mentioned left return yoke (1), last yoke (3), right return yoke (2), following yoke (4) join end to end, center pillar (5) is located between the upper and lower yoke (3,4), it is characterized in that, the cross sectional shape of left and right return yoke (1,2) and upper and lower yoke (3,4) is a D shape, and the lower surface of the left surface of left return yoke (1), the right surface of right return yoke (2), the upper surface of going up yoke (3) and following yoke (4) is the plane.

2,5-column Core For Mine Explosion-proof Transformer according to claim 1 is characterized in that: the cross sectional shape of center pillar (5) is for oval.

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