CN2864936Y

CN2864936Y - Transformer core with air flue

Info

Publication number: CN2864936Y
Application number: CN 200520139629
Authority: CN
Inventors: 范建伟
Original assignee: China Electric Equipment Group Co Ltd
Current assignee: China Electric Equipment Group Co Ltd
Priority date: 2005-12-13
Filing date: 2005-12-13
Publication date: 2007-01-31
Anticipated expiration: 2015-12-13

Abstract

This utility model relates to a voltage transformer iron core with an air flue employing high quality high permeability cold reducing orientation silicon sheet overlapping. The iron core employs non-jetting with an inclination of 45 degrees juncture lapping connection, namely the joints of the upper iron yoke and the side yoke of the iron core, the side yoke and the lower iron yoke of the iron core, the upper iron yoke and the core post of the iron core and the core post and the lower iron yoke of the iron core are all of 45 degrees. The host grade position is provided with air flue and is stuck to the silicon steel piece by glue through the air flue of the iron core bar, thereby the isolated host grad iron core forming the air flue. The interior heat of the iron core is capable of emission outwardly through the air flue, and the size, the amount and the position of the iron core air flue bar are adjustable. This utility model has the advantages of reduced height of the iron core, reduced cubage of the voltage transformer due to the long round section and an air flue, thereby overcoming the difficulty of mine height limitation, promoting the heat dissipating effect of the iron core and solving the problem of heat dissipating effects gap of the flame-proof shell.

Description

A kind of transformer core with air flue

Technical field

The utility model relates to a kind of transformer core, be used for flameproof dry type transformer with air flue.Belong to the transformer technology field.

Background technology

At present general dry-type transformer core section is for approximate round, height unshakable in one's determination is higher, there is not air flue in the iron core, the transformer heat that iron core is produced when operation can only distribute in air by outer surface, inner heat then unshakable in one's determination is difficult to distribute, make and local overheating unshakable in one's determination to cause integral heat sink effect unshakable in one's determination relatively poor, like this to the normal operation of transformer with bad influence is all arranged useful life.

Summary of the invention

The purpose of this utility model is the defective at above-mentioned existence, proposes a kind of transformer core of improved band air flue.It can effectively reduce height unshakable in one's determination, reduces the volume of transformer; Improved the radiating effect of the integral body of transformer.

Technical solution of the present utility model: core material adopts the high magnetic conduction cold-rolled orientation silicon steel of high-quality sheet closed assembly, stem, and the sectional area of iron yoke is the cross section of sub-elliptical type; Main unshakable in one's determination is provided with air flue, and the air flue stay adopts H level pulling part.Its structure is that the complete oblique 45 degree seams of no punching that adopt unshakable in one's determination are spliced, i.e. Tie Xin upper yoke and return yoke unshakable in one's determination, return yoke unshakable in one's determination and lower yoke unshakable in one's determination, upper yoke 1 unshakable in one's determination and stem unshakable in one's determination, seam between the lower yoke of stem 3 unshakable in one's determination and iron core is 45 degree, air flue is left in the main position, sticks with glue knot on the silicon steel sheet of iron core by the iron-core air-path stay.Form air flue thereby separate the main iron core, internal heat unshakable in one's determination can outwards be distributed by air flue, and the size of iron-core air-path stay and quantity and seat are adjustable.

Advantage of the present utility model: this transformer core that has air flue, apply in the flame-proof mine transformer, compare with other transformer cores, its cross section is an approximate ellipsoidal, whole height unshakable in one's determination is shorter, has strengthened the area of dissipation of the outer surface of the iron core that directly contacts with air; And main unshakable in one's determination partly leaves air flue.Inside unshakable in one's determination has just increased by two faces again and has directly contacted with air, make the heat of transformer inside also can distribute timely,, avoided the problem of local overheating unshakable in one's determination, improved integral heat sink effect unshakable in one's determination, improved the service conditions of transformer, thereby prolonged the useful life of transformer, also reduced the volume of transformer simultaneously, because will just mean also that will increase volume could increase radiating surface, solved by the increase air flue now by increasing outer surface originally.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model

Accompanying drawing 2 is A-A cut-away views of Fig. 1

Accompanying drawing 3 is front views of band duct position in the iron core

Among the figure 1 is upper yoke, the 2nd unshakable in one's determination, return yoke, the 3rd unshakable in one's determination, stem, the 4th unshakable in one's determination, lower yoke, the 5th unshakable in one's determination, iron-core air-path stay.

Embodiment

The contrast accompanying drawing, its structure is, stem, upper and lower iron yoke 1,4 unshakable in one's determination are oval type, the sub-elliptical cross section, main unshakable in one's determination partly has air flue, the complete oblique 45 degree seams of no punching that adopt unshakable in one's determination are spliced, upper yoke 1 promptly unshakable in one's determination and return yoke 2 unshakable in one's determination, return yoke 2 unshakable in one's determination and lower yoke 4 unshakable in one's determination, upper yoke 1 unshakable in one's determination and stem 3 unshakable in one's determination, seam between the lower yoke 4 of stem 3 unshakable in one's determination and iron core is 45 degree, and air flue is left in the main position, sticks with glue knot on the silicon steel sheet of iron core by iron-core air-path stay 5.Form air flue thereby separate the main iron core, internal heat unshakable in one's determination can outwards be distributed by air flue, and the size of iron-core air-path stay 5 and quantity and seat are adjustable.Core material adopts the high magnetic conduction cold-rolled orientation silicon steel of high-quality sheet closed assembly, and the air flue stay adopts H level pulling part.

Claims

1, a kind of transformer core with air flue, it is characterized in that iron core adopts the complete oblique 45 degree seams of no punching to splice, i.e. Tie Xin upper yoke (1) and return yoke (2) unshakable in one's determination, return yoke (2) unshakable in one's determination and lower yoke (4) unshakable in one's determination, upper yoke (1) unshakable in one's determination and stem (3) unshakable in one's determination, seam between the lower yoke (4) of stem (3) unshakable in one's determination and iron core is 45 degree, and air flue is left in the main position, sticks with glue knot on the silicon steel sheet of iron core by iron-core air-path stay (5).

2, a kind of transformer core according to claim 1 with air flue, it is characterized in that described main position leaves air flue, stick with glue knot on the silicon steel sheet of iron core by iron-core air-path stay (5), promptly separate the main iron core and form air flue, internal heat unshakable in one's determination can outwards be distributed by air flue, the size of iron-core air-path stay (5) and quantity and seat are adjustable, and iron-core air-path stay (5) adopts H level pulling part.

3, a kind of transformer core with air flue according to claim 1 is characterized in that the stem (3) of described iron core, upper and lower iron yoke (1,4) unshakable in one's determination are oval type, sub-elliptical cross section.