CN217822262U

CN217822262U - Oil cooling magnetizing coil

Info

Publication number: CN217822262U
Application number: CN202222012504.8U
Authority: CN
Inventors: 易勇
Original assignee: Mianyang High Tech Zone Bipolar Electronics Co ltd
Current assignee: Mianyang High Tech Zone Bipolar Electronics Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-15
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses an oil cooling magnetizing coil, including box, enameled wire and aluminium heat dissipation gasket, the box includes bottom plate and roof, be equipped with inner circle and outer lane on the bottom plate, be equipped with cyclic annular retainer plate on the bottom plate between outer lane outer wall and the bottom plate edge, be equipped with a plurality of enameled wires in the space between inner circle and the outer lane, it has aluminium heat dissipation gasket to fill up between the enameled wire, be equipped with oil inlet and oil-out on the outer lane, be equipped with circulation oil pipe way between oil inlet and the oil-out, be equipped with the power oil pump in the circulation oil pipe way, the roof lid is fixed roof and bottom plate with fixed establishment on inner circle and outer lane. The utility model discloses be equipped with one deck oil equipartition between every layer of copper coil layer and be used for siphoning away the inside heat of enameled wire, and separate with aluminium radiating gasket between every enameled wire to in oil permeates the enameled wire from aluminium radiating gasket, aluminium radiating gasket has fine heat absorption effect moreover, in time siphons away the temperature of enameled wire internal oil in time.

Description

Oil cooling magnetizing coil

Technical Field

The utility model relates to an oil cooling coil technical field especially relates to an oil cooling coil that magnetizes.

Background

The existing coil structure has the disadvantages that the heat dissipation condition is poor, the inner longitudinal oil clearance and the outer longitudinal oil clearance of the inner coil are small, and the outer longitudinal oil clearance of the outer coil is far larger than the inner longitudinal oil clearance, so that the oil flow passing through the inner coil is insufficient, the oil flow passing through the outer coil is excessive, the oil flow among the coils is mismatched, the temperature rise of the outer coil is low, the temperature rise of the inner coil is high, the oil flow distribution nonuniformity is increased, the oil flow velocity is reduced, the cooling condition is poor, the temperature rise of the coils is high, the temperature rise of the middle part of the coils is overhigh, the insulating material is aged quickly, and the service life and the reliability of a transformer are reduced. The enameled wire has poor oil seepage capability and poor oil heat dissipation effect, and heat in the coil cannot be dissipated timely, so that the heat in the coil is too high, and the function and the service life of the coil are affected.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide an oil cooling coils that magnetizes, it is poor to have solved the coil oil leakage effect in the enameled wire, and heat conduction ability is poor, can't in time with the problem of heat derivation.

According to the utility model provides an oil cooling magnetizing coil, including box, enameled wire and aluminium heat sink, the box includes bottom plate and roof, be equipped with inner circle and outer lane on the bottom plate, the inner circle sets up at the central point of bottom plate rigidity, the outer lane cover is outside the inner circle and along being close to the setting of bottom plate edge fastening, be equipped with cyclic annular retainer plate on the bottom plate between outer lane outer wall and the bottom plate edge, be equipped with a plurality of enameled wires in the space between inner circle and the outer lane, it has aluminium heat sink to fill up between the enameled wire, be equipped with oil inlet and oil-out on the outer lane, be equipped with circulating oil pipe way between oil inlet and the oil-out, be equipped with the power oil pump in the circulating oil pipe way, roof lid is fixed roof and bottom plate on inner circle and outer lane with fixed establishment.

In some embodiments of the present invention, the enameled wire includes a copper coil layer wrapped by a plurality of layers of windings, and a layer of oil is uniformly distributed between the copper coil layers.

In other embodiments of the present invention, the enameled wire is provided with a plurality of pieces.

In other embodiments of the utility model, aluminium radiating gasket a week is equipped with a plurality of radiator blades, be equipped with the oil feed tank between the radiator blade.

In other embodiments of the present invention, the fixing mechanism includes a fixing support, two fixing bolts and nuts, six sets of bolt holes along the edge are correspondingly arranged on the top plate and the bottom plate, each bolt hole and inner side are correspondingly provided with a support fixing hole, the support fixing hole does not run through the top plate or the bottom plate, a strip-shaped fixing hole is arranged on the fixing support, the fixing support is fixed on the support fixing hole through a bolt with a nut, and the two fixing bolts pass through the bolt holes on the strip-shaped fixing hole and the top plate and the bottom plate and are fixed by the nuts at the two ends of the two fixing bolts.

The utility model discloses well enameled wire adopts the copper coil layer of multilayer winding parcel to form, is equipped with one deck oil equipartition between every layer of copper coil layer, has inside can permeating the enameled wire through the oil equipartition, and separates with aluminium heat sink gasket between every enameled wire to in oil permeates the enameled wire from aluminium heat sink gasket, aluminium heat sink gasket has fine endothermic effect moreover, in time siphons away the temperature of enameled wire interior oil. The whole structure is simple, and the installation and the disassembly are convenient.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a cross-sectional structure of an oil-cooled magnetizing coil according to the present invention.

Fig. 2 is a schematic view of a three-dimensional structure of the box body provided by the present invention.

Fig. 3 is a schematic structural view of the aluminum heat sink gasket according to the present invention.

Fig. 4 is a schematic view of a cross-sectional structure of the enameled wire provided by the present invention.

In the figure: 1. a base plate; 11. bolt holes; 2. an outer ring; 21. an oil inlet; 22. an oil outlet; 3. an inner ring; 4. a top plate; 41. bolt holes; 42. a bracket fixing hole; 5. fixing a bracket; 51. strip-shaped fixing holes; 52. Fixing bolts at two ends; 521. a nut; 6. an aluminum heat sink pad; 61. a heat dissipating fin; 62. an oil inlet groove; 7. Enamelled wires; 71. oil is uniformly distributed; 72. a copper coil layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-4, an oil-cooled magnetizing coil comprises a box body, enameled wires 7 and an aluminum heat-dissipation gasket 6, wherein the box body comprises a bottom plate 1 and a top plate 4, an inner ring 3 and an outer ring 2 are arranged on the bottom plate 1, the inner ring 3 is fixedly arranged at the center of the bottom plate 1, the outer ring 2 is sleeved outside the inner ring 3 and fixedly arranged along the edge close to the bottom plate 1, an annular fixing ring is arranged on the bottom plate 1 between the outer wall of the outer ring 2 and the edge of the bottom plate 1, a plurality of enameled wires 7 are arranged in a space between the inner ring 3 and the outer ring 2, the aluminum heat-dissipation gasket 6 is padded between the enameled wires 7, an oil inlet 21 and an oil outlet 22 are arranged on the outer ring 2, a circulating oil pipeline is arranged between the oil inlet 21 and the oil outlet 22, a power oil pump is arranged in the circulating oil pipeline, and the top plate 4 covers the inner ring 3 and the outer ring 2 and fixes the top plate 4 and the bottom plate 1 by using a fixing mechanism.

Firstly, prepared enameled wires 7 are plugged into a cavity formed by the inner ring 3 and the outer ring 2, an aluminum heat dissipation gasket 6 is padded between every two adjacent enameled wires 7, after the enameled wires are assembled, oil is injected into the cavity formed by the inner ring 3 and the outer ring 2, the oil submerges the whole cavity, air bubbles are discharged, then the top plate 4 is covered, the top plate 4 and the bottom plate 1 are fixed through a fixing mechanism, and the cavity is sealed. Before oil injection, a circulating oil pipeline is installed between the oil inlet 21 and the oil outlet 22. The coil assembly can work continuously by using circulating variable pressure oil for cooling.

The enameled wire 7 comprises a plurality of copper coil layers 72 wound and wrapped, and a layer of oil is uniformly distributed 71 between every two adjacent copper coil layers. The coil is wound by a copper wire with the diameter of 1.75mm multiplied by 5.13mm, the surface of the copper wire is treated by 2 layers of imine films and 2 layers of high-pressure oil soaked insulating paper, and the voltage resistance is over 2 Kv. The coils are connected in a 4-string and 4-parallel connection mode, the total impedance of the coil group is about 8.5 omega,

the number of the enameled wires 7 is 8. Different numbers can be set as required, and the number of the coils can be kept to be more than 5 as much as possible, so that the function of the coils is ensured, and the heat dissipation is not influenced.

A plurality of radiating blades 61 are arranged on the periphery of the aluminum radiating gasket 6, and an oil inlet groove 62 is arranged between the radiating blades 61. The oil can enter the aluminum heat dissipation gasket 6 through the oil inlet groove 62, and is uniformly distributed 71 on the aluminum heat dissipation gasket 6 to suck the oil so as to permeate into the coil.

The fixing mechanism comprises a fixing support 5, two fixing bolts 52 and nuts 521, six groups of

bolt holes

11 and 41 arranged along the edge are correspondingly arranged on the top plate 4 and the bottom plate 1, a support fixing hole 42 is correspondingly arranged on the inner side of each

bolt hole

11 and 41, the support fixing hole 42 does not penetrate through the top plate 4 or the bottom plate 1, a strip-shaped fixing hole 51 is formed in the fixing support 5, the fixing support 5 is fixed on the support fixing hole 42 through a bolt with a nut, and the two fixing bolts 52 penetrate through the strip-shaped fixing hole 51 and the

bolt holes

11 and 41 in the top plate 4 and the bottom plate 1 and are fixed by the nuts 521 at the two ends of the two fixing bolts 52.

The top plate 4 is fixed on the top of the inner ring 3 and the outer ring 2 to form a sealed cavity, and a fixing bracket 5 is arranged at both ends of each two-end fixing bolt 52 so as to form a fixing bracket 5 for other installation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An oil cooling magnetizing coil is characterized in that: including box, enameled wire (7) and aluminium radiating gasket (6), the box includes bottom plate (1) and roof (4), be equipped with inner circle (3) and outer lane (2) on bottom plate (1), inner circle (3) put fixed setting at the central point of bottom plate (1), outer lane (2) cover is outside inner circle (3) and along being close to bottom plate (1) edge fixed setting, be equipped with annular retainer plate on bottom plate (1) between outer lane (2) outer wall and bottom plate (1) edge, be equipped with a plurality of enameled wires (7) in the space between inner circle (3) and outer lane (2), it has aluminium radiating gasket (6) to fill up between enameled wire (7), be equipped with oil inlet (21) and oil-out (22) on outer lane (2), be equipped with circulating oil pipeline between oil inlet (21) and oil-out (22), be equipped with the power oil pump in the circulating oil pipeline, roof (4) cover on inner circle (3) and oil-out (2) and fix roof (4) and bottom plate (1) with fixed establishment.

2. The oil-cooled magnetizing coil of claim 1, wherein: the enameled wire (7) comprises a plurality of layers of copper coil layers (72) wound and wrapped, and a layer of oil is uniformly distributed (71) between every two adjacent copper coil layers.

3. The oil-cooled magnetizing coil of claim 1, wherein: the number of the enameled wires (7) is 8.

4. The oil-cooled magnetizing coil of claim 1, wherein: a plurality of radiating blades (61) are arranged on the periphery of the aluminum radiating gasket (6), and an oil inlet groove (62) is formed between the radiating blades (61).

5. The oil-cooled magnetizing coil of claim 1, wherein: the fixing mechanism comprises a fixing support (5), two fixing bolts (52) and nuts (521), six groups of bolt holes (11, 41) arranged along the edge are correspondingly formed in the top plate (4) and the bottom plate (1), each bolt hole (11, 41) is correspondingly formed in the inner side of each support fixing hole (42), each support fixing hole (42) does not penetrate through the top plate (4) or the bottom plate (1), a strip-shaped fixing hole (51) is formed in the fixing support (5), the fixing support (5) is fixed to the support fixing holes (42) through one bolt with the nuts, and the two fixing bolts (52) penetrate through the strip-shaped fixing holes (51) and the bolt holes (11, 41) in the top plate (4) and the bottom plate (1) and are fixed to the two ends of the two fixing bolts (52) through the nuts (521).