CN213340019U

CN213340019U - Inner support frame of iron core single frame and iron core single frame

Info

Publication number: CN213340019U
Application number: CN202022683531.9U
Authority: CN
Inventors: 袁粼; 李庆华; 李晨; 张庆; 田守好
Original assignee: Qingdao Yunlu Advanced Materials Technology Co ltd
Current assignee: Qingdao Yunlu Advanced Materials Technology Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-06-01
Anticipated expiration: 2030-11-18

Abstract

The utility model provides an inner support frame and single frame unshakable in one's determination of single frame unshakable in one's determination, inner support frame encloses synthetic fillet rectangular frame by two vertical frame limits, two horizontal frame limits and four arc frame limits, arc frame border axial is equipped with first lateral part, intermediate part and second lateral part in proper order, the outer wall of intermediate part is located the outer wall of first lateral part with outside the outer wall of second lateral part. The outer wall surface of the middle part is arranged outside the outer wall surface of the first side part and the outer wall surface of the second side part, so that the inner support frame has supporting capacity, the effects of enhancing the structural strength of the single-frame base body and reducing the deformation probability of the single-frame base body are achieved, the excitation loss of the iron core can be obviously reduced, and the running noise of the transformer can be obviously reduced.

Description

Inner support frame of iron core single frame and iron core single frame

Technical Field

The utility model relates to an electrical equipment technical field especially relates to single frame unshakable in one's determination and inner support frame thereof.

Background

The iron core is the main magnetic circuit part of the transformer and is generally formed by assembling a plurality of iron core single frames. The splicing position of the iron core single frame is used for winding a coil, and the iron core and the coil wound on the iron core form an electromagnetic induction system.

The iron core single frame comprises a single frame base body and an inner support frame supported inside the single frame base body. The single-frame base body is formed by winding magnetic conduction strip materials layer by layer.

The existing iron core has large excitation loss, which causes large operation noise of the transformer. In view of the above, how to reduce the excitation loss of the core is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an inner support frame of single frame unshakable in one's determination, inner support frame is by two vertical frame limits, two horizontal frame limits and four arc frame limits enclose synthetic fillet rectangular frame, arc frame border axial is equipped with first lateral part, intermediate part and second lateral part in proper order, the outer wall of intermediate part is located the outer wall of first lateral part with outside the outer wall of second lateral part.

Optionally, a distance T between the outer wall surface of the first side portion and the outer wall surface of the second side portion and the outer wall surface of the middle portion in the inward and outward direction is less than or equal to 50 mm.

Optionally, a thickness of the first side portion and a thickness of the second side portion are not greater than a thickness of the middle portion.

Optionally, the arc-shaped frame edges are of an equal-thickness structure, and the longitudinal frame edges and the transverse frame edges are also of an equal-thickness structure.

Optionally, the arc-shaped frame edge is a structure with a thick middle and thin two sides, and the longitudinal frame edge and the transverse frame edge are also structures with a thick middle and thin two sides.

Optionally, the first side portion and the second side portion are both of an equal thickness structure; or, the first side portion and the second side portion are both of a thickness reducing structure, and are specifically reduced in thickness along the direction of the circular center line, and the positions away from the middle portion are thinner.

Optionally, the cross-sectional outer edges of the middle portion and the longitudinal rims and the transverse rims are all straight lines.

Optionally, the longitudinal frame edge is a linear frame edge which is not bent in the longitudinal direction, and the transverse frame edge is a circular arc frame edge which has a certain curvature in the transverse direction or a linear frame edge which is not bent in the transverse direction.

Optionally, the material of the inner support frame is iron, iron alloy, copper alloy, titanium alloy, ceramic, silicone resin or glass fiber reinforced plastic.

In addition, the utility model provides a single frame unshakable in one's determination, single frame unshakable in one's determination includes inner support frame and the single frame base member that is formed by the winding of strip successive layer, inner support frame supports inside the single frame base member, its characterized in that, inner support frame be above-mentioned arbitrary inner support frame, inner support frame's arc frame limit the intermediate part with single frame base member contact, inner support frame's arc frame limit first lateral part and second lateral part and form the clearance between the single frame base member.

The utility model discloses a set up the outer wall of the intermediate part of inner support frame outside the outer wall of first lateral part and second lateral part, like this, under the applied state, there is the clearance between intermediate part and the single frame base member contact, first lateral part and second lateral part and the single frame base member. The structure ensures that the single-frame base body has a certain stress release space at the arc-shaped frame edge on the premise of ensuring the supporting strength of the inner supporting frame, and the stress of the single-frame base body at the arc-shaped frame edge is the maximum, so that the excitation loss of the iron core can be obviously reduced by releasing the stress at the position, and the noise of the iron core can be obviously reduced. Moreover, the structure only enables the inner side of the single-frame base body to be subjected to micro deformation, and the external dimension of the iron core is not influenced.

Drawings

Fig. 1 is a schematic view of an embodiment of an inner support frame of an iron core single frame provided by the present invention;

fig. 2 shows a cross section of the two curved rims of the upper side of fig. 1.

Fig. 3 is a schematic cross-sectional view of a core frame using the inner support frame of fig. 1 at the arc-shaped frame sides;

FIG. 4 is a schematic cross-sectional view of several embodiments of the arcuate rims;

FIG. 5 is a schematic cross-sectional view of several embodiments of the longitudinal frame side or the transverse frame side;

fig. 6 is a projection view of two embodiments of the inner support frame in a plane perpendicular to the circle center line.

The reference numerals are explained below:

10 inner support frame;

101 an arc-shaped frame edge, 1011 a first side part, 1012 a middle part and 1013 a second side part;

102 longitudinal frame edges and 103 transverse frame edges;

20 single frame base.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the technical solution of the present invention with reference to the accompanying drawings.

The iron core is the main magnetic circuit part of the transformer, and the iron core and the coil wound on the iron core form an electromagnetic induction system. The iron core is generally assembled by a plurality of iron core single frames.

The iron core single frame comprises a single frame base body 20 and an inner support frame 10, wherein the single frame base body 20 is formed by winding magnetic conduction strip materials layer by layer, and the inner support frame 10 is supported inside the single frame base body 20.

As shown in fig. 1, the inner support frame 10 of the single core frame provided by the present invention is a rounded rectangular frame surrounded by two longitudinal frame edges 102, two transverse frame edges 103, and four arc-shaped frame edges. The arc-shaped frame edge is provided with a first side portion 1011, an intermediate portion 1012 and a second side portion 1013 in this order in the axial direction a.

As shown in fig. 2, each of the first and

second side portions

1011, 1013 is bent inward with respect to the intermediate portion 1012 such that the outer wall surface of the intermediate portion 1012 is positioned outside the outer wall surfaces of the first and

second side portions

1011, 1013. In the applied state, as shown in fig. 3, the middle portion 1012 of the arc-shaped frame side 101 contacts the single frame substrate 20, and the first side portion 1011 and the second side portion 1013 of the arc-shaped frame side 101 have a gap with the single frame substrate 20. The structure ensures that the single-frame base body has a certain stress release space at the arc-shaped frame edge on the premise of ensuring the supporting strength of the inner supporting frame, and the stress of the single-frame base body at the arc-shaped frame edge is the maximum, so that the excitation loss of the iron core can be obviously reduced by releasing the stress at the position, and the noise of the iron core can be obviously reduced. Moreover, the structure only enables the inner side of the single-frame base body to be subjected to micro deformation, and the external dimension of the iron core is not influenced.

Specifically, the distance between the outer wall surface of the first side portion 1011 and the outer wall surface of the intermediate portion 1012 in the inward and outward direction (i.e., T1 in the drawing) and the distance between the outer wall surface of the second side portion 1013 and the outer wall surface of the intermediate portion 1012 in the inward and outward direction (i.e., T2 in the drawing) are not greater than 50 mm. Setting T1 and T2 within this range makes the inner bracket 10 easier to mold and has a relatively high structural strength. It should be noted that the first and

second side portions

1011, 1013 are preferably symmetrical about the centerline of the middle portion 1012, in which case T1 and T2 are of equal size, so that the force applied to the inner support frame 10 is more uniform.

Specifically, as shown in fig. 4, the thickness of the first side portion 1011 and the thickness of the second side portion 1013 are not greater than the thickness of the middle portion 1012. In this arrangement, the strength at the joints between the intermediate portion 1012 and the first and

second side portions

1011, 1013 is high, and the joints are not easily broken, so that the support capability is relatively good.

Specifically, the arcuate frame 101 may be of uniform thickness (as shown in fig. 4-a), in which case the thickness of the first side 1011, the second side 1013, and the middle 1012 are all uniform. Meanwhile, the longitudinal frame edge 102 and the transverse frame edge 103 are also of equal thickness (as shown in fig. 5-e).

Alternatively, the curved frame edge 101 may be a thick middle and thin two sides (as shown in FIGS. 4-b, 4-c, 4-d, and 4-e), and the cross-section of the longitudinal frame edge 102 and the transverse frame edge 103 may also be a thick middle and thin two sides (as shown in FIGS. 5-a, 5-b, 5-c, and 5-d).

When the arc-shaped frame 101 has a structure with a thick middle part and thin two sides, the first side part 1011 and the second side part 1013 may have an equal thickness (as shown in fig. 4-b), or may have a structure with a gradually reduced thickness along the axial direction a and become thinner at a position farther from the middle part 1012 (as shown in fig. 4-c, 4-d, and 4-e).

The taper form of the thickness-tapered structure may specifically be a diagonal taper (as shown in fig. 4-c), an arc taper (as shown in fig. 4-d), a stepped taper (as shown in fig. 4-e), or the like.

Specifically, in the applied state, in addition to the intermediate portion 1012 of the arc-shaped frame side 101 being in contact with the single frame base 20, the outer wall surfaces of the vertical frame sides 102 and the outer wall surfaces of the horizontal frame sides 103 are also in contact with the single frame base 20. As shown in fig. 4 and 5, it is preferable that the cross-sectional outer edges of the intermediate portion 1012, the longitudinal rims 102, and the transverse rims 103 are all arranged in straight lines, so that the intermediate portion 1012, the longitudinal rims 102, and the transverse rims 103 can be brought into closer contact with the single frame base 20, thereby enhancing the strength of the core single frame.

Specifically, as shown in fig. 6-a, the longitudinal frame side 102 is a linear frame side which is not bent in the longitudinal direction, and in the application state, the longitudinal frame sides 102 of the two core frames are spliced together to form a winding post, and the coil is wound on the periphery of the winding post. It should be noted that the straight frame edge is affected by the processing accuracy, and the straightness may be deviated to some extent, and may not be absolutely straight.

Specifically, as shown in fig. 6-a, the lateral frame 103 may be a linear frame having no curvature in the lateral direction. Alternatively, as shown in fig. 6-b, the transverse frame 103 may be a circular arc frame having a curvature in the transverse direction, so as to reduce the core stress.

Specifically, the material of the inner support frame 10 may be iron, iron alloy, copper alloy, titanium alloy, ceramic, silicone resin, glass fiber reinforced plastic, and the like.

The above is to the detailed introduction provided by the present invention. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The inner support frame of the single iron core frame is characterized in that the inner support frame (10) is a rounded rectangular frame which is formed by two longitudinal frame edges (102), two transverse frame edges (103) and four arc-shaped frame edges (101) in a surrounding mode, the arc-shaped frame edges (101) are sequentially provided with a first side portion (1011), a middle portion (1012) and a second side portion (1013) along the axial direction, and the outer wall surface of the middle portion (1012) is located outside the outer wall surface of the first side portion (1011) and the outer wall surface of the second side portion (1013).

2. An inner bracket for a core segment according to claim 1, wherein a distance T between an outer wall surface of said first side portion (1011) and an outer wall surface of said second side portion (1013) and an outer wall surface of said intermediate portion (1012) in an inward-outward direction is not more than 50 mm.

3. An inner support frame for a core subframe as claimed in claim 1, wherein the thickness of said first side portion (1011) and the thickness of said second side portion (1013) are not greater than the thickness of said middle portion (1012).

4. An inner support frame for a core subframe according to claim 3, characterized in that said arcuate rims (101) are of uniform thickness, said longitudinal rims (102) and said transverse rims (103) also being of uniform thickness.

5. An inner support frame for a core subframe according to claim 3, characterized in that said arc-shaped frame rims (101) are of a thick middle and thin sides, and said longitudinal frame rims (102) and said transverse frame rims (103) are of a thick middle and thin sides.

6. An inner support frame for a core subframe as claimed in claim 5, wherein said first side portion (1011) and said second side portion (1013) are of uniform thickness construction; alternatively, the first side portion (1011) and the second side portion (1013) are each of a tapered thickness structure, and are tapered in the axial direction and thinner at positions farther from the intermediate portion (1012).

7. An inner support frame for a core subframe according to claim 1, characterized in that the cross-sectional outer edges of the intermediate portion (1012) and the cross-sectional outer edges of the longitudinal rims (102) and the cross-sectional outer edges of the transverse rims (103) are straight lines.

8. An inner support frame for a core subframe according to claim 1, characterized in that the longitudinal frame sides (102) are rectilinear frame sides which are not curved in the longitudinal direction, and the transverse frame sides (103) are circular arc frame sides which have a curvature in the transverse direction or rectilinear frame sides which are not curved in the transverse direction.

9. An inner support for a core segment according to any one of claims 1-8, c h a r a c t e r i z e d in that said inner support (10) is made of iron, iron alloy, copper alloy, titanium alloy, ceramic, silicone resin or glass fibre reinforced plastic.

10. Core subframe comprising an inner support frame and a subframe base body (20) formed by winding a strip layer by layer, said inner support frame being supported inside said subframe base body (20), characterized in that said inner support frame is an inner support frame (10) according to any of claims 1 to 9, the middle portion (1012) of the curved frame rim (101) of said inner support frame being in contact with said subframe base body (20), and the first side portion (1011) and the second side portion (1013) of the curved frame rim (101) of said inner support frame forming a gap between said subframe base body (20).