CN211265170U - Heat dissipation structure of high-frequency transformer for rail transit - Google Patents
Heat dissipation structure of high-frequency transformer for rail transit Download PDFInfo
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- CN211265170U CN211265170U CN201922465943.2U CN201922465943U CN211265170U CN 211265170 U CN211265170 U CN 211265170U CN 201922465943 U CN201922465943 U CN 201922465943U CN 211265170 U CN211265170 U CN 211265170U
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Abstract
The utility model provides a heat radiation structure for track traffic's high frequency transformer, its is rational in infrastructure, and the radiating effect is good, has prolonged high frequency transformer's life, which comprises an outer shell, be provided with the transformer in the shell and hold the chamber, the transformer holds the intracavity and is provided with transformer body, is located transformer holds chamber below hug closely under the lower surface of shell and be provided with the water-cooling board, the water-cooling inboard expert has the coolant liquid, the transformer holds the upper end cover in chamber and is equipped with insulating end cover, be equipped with on the insulating end cover with the leading-out terminal that transformer body is connected, be provided with high temperature resistant thermal-insulated coating on four sides of shell, the intracavity packing is held to the transformer has high heat conduction.
Description
Technical Field
The utility model relates to a high frequency transformer technical field specifically is a heat radiation structure for track traffic's high frequency transformer.
Background
The loss of the high-frequency transformer comes from two aspects of iron loss and copper loss, wherein the iron loss is magnetic core loss, and the magnetic core loss consists of magnetic hysteresis loss, eddy current loss and residual loss in the magnetic core magnetization process. The core loss is closely related to the magnetic material characteristics, the operating frequency, and the like, and the higher the frequency is, the larger the core loss is. In a high-frequency circuit, the current change rate is very large, and the state of uneven distribution is serious. The magnetic field generated in the wire by the high frequency current induces the largest electromotive force in the central region of the wire. The induced current is maximized at the center of the wire because the induced electromotive force generates an induced current in the closed circuit. Since the induced current is always in the direction that reduces the original current, it forces the current to be confined only near the outer surface of the wire, so the higher the frequency, the greater the copper losses. The heating of the high frequency transformer is a problem that we have to face.
If the high-frequency transformer can not dissipate a large amount of heat during working, the working of the high-frequency transformer can be influenced, the performance of the high-frequency transformer can also be influenced, the service life of the high-frequency transformer can be greatly shortened, and the use requirement during working can not be met.
Some high-frequency transformers using air cooling and water cooling are available, but the heat dissipation effect is not ideal.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a heat radiation structure for track traffic's high frequency transformer, its is rational in infrastructure, and the radiating effect is good, has prolonged high frequency transformer's life.
The technical scheme is as follows: the utility model provides a heat radiation structure for track traffic's high frequency transformer, includes the shell, be provided with the transformer in the shell and hold the chamber, the transformer holds the intracavity and is provided with transformer body, its characterized in that: the transformer cavity is characterized in that a water cooling plate is arranged below the lower surface of the shell in a clinging mode and located below the transformer cavity, cooling liquid is communicated with the water cooling plate, an insulating end cover is arranged on the upper end cover of the transformer cavity, wire outgoing terminals connected with the transformer body are arranged on the insulating end cover, high-temperature-resistant heat insulation coatings are arranged on four side faces of the shell, and high-heat-conductivity resin is filled in the transformer cavity.
Further, the lower surface of the housing is configured to be a plane.
Further, heat-conducting silicone grease is arranged between the lower surface of the shell and the water cooling plate.
Further, the flatness of the lower surface of the housing is controlled to be 0.05mm or less, and the roughness of the lower surface of the housing is controlled to be 3.2 μm or less.
Further, the high thermal conductive resin is MC 62.
Furthermore, the high-temperature-resistant heat-insulating coating adopts a ZS-1 high-temperature-resistant heat-insulating coating.
Further, the lower surface of the insulating end cover is coated with a high-temperature-resistant heat-insulating coating.
Furthermore, the outlet terminal is L-shaped, a straight-line-shaped groove is formed in the insulating end cover, one end of the outlet terminal is exposed out of the insulating end cover, the other end of the outlet terminal extends into the straight-line-shaped groove, and a fixing nut is arranged at the position of the outlet terminal.
Furthermore, four corners of the insulating end cover are respectively provided with a fixing hole, the shell is correspondingly provided with a thread fixing hole, and the insulating end cover is matched and fixed on the shell through bolts and the thread fixing hole.
Further, the lower end of the shell is provided with a mounting edge, four corners of the mounting edge are respectively provided with a mounting hole, and the high-temperature-resistant heat-insulating coating extends to the mounting edge.
The utility model discloses a heat radiation structure for track traffic's high frequency transformer, it is through setting up the water-cooling board on the lower surface of the shell of transformer, the water-cooling board is expert at and is had coolant liquid to cool off, coat high temperature resistant heat insulating coating on the side of the shell of transformer simultaneously, the upper end of the shell of transformer is provided with the insulating end cover, insulating end cover thermal conductivity coefficient is low, can insulate against heat, when the transformer is operated, because high temperature resistant heat insulating coating, heat can't be conducted from other surfaces, can only carry out heat conduction through the surface that is equipped with the water-cooling board, lead to coolant liquid in the cooling board and carry out the heat exchange, the circulating coolant liquid takes away the heat, concentrate the heat dissipation through the setting of high temperature resistant heat insulating coating, make heat conduction more high-efficient, effectively take away the heat that the transformer work produced, thereby reduce the temperature rise of, the stable operation that is favorable to the transformer and life's improvement, be equipped with the flatness of one side surface of cooling plate to transformer housing simultaneously, the roughness requires, make transformer housing and cooling plate laminating that can be better, improve high heat transmission's effect, in addition, still be provided with heat conduction silicone grease between the lower surface of the shell of transformer and water-cooling plate, heat conduction through the silicone grease, make the lower surface of shell and water-cooling plate can realize complete laminating, further improve heat-sinking capability, thereby effectively reduce internal ambient temperature of whole rack and transformer body temperature rise, guarantee all the other thermal element lives.
Drawings
Fig. 1 is a schematic view of a heat dissipation structure of a high-frequency transformer for rail transit according to the present invention;
fig. 2 is a schematic top view of the heat dissipation structure of the high-frequency transformer for rail transit according to the present invention;
fig. 3 is a schematic front view of the heat dissipation structure of the high-frequency transformer for rail transit according to the present invention;
fig. 4 is a schematic sectional view in the direction C-C of fig. 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, 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 only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
See fig. 1, 2, 3, 4, the utility model discloses a heat radiation structure for track traffic's high frequency transformer, which comprises an outer shell 1, be provided with the transformer in the shell and hold chamber 101, the transformer holds intracavity and is provided with transformer body 2, it is provided with the water-cooling board to lie in to hug closely under the lower surface 102 of the shell that the transformer holds chamber 101 below, in this embodiment, the lower surface 102 of shell sets up to the plane, it has the coolant liquid to lead to in the water-cooling board, be provided with heat conduction silicone grease between the lower surface of shell and the water-cooling board, the upper end cover that the transformer held the chamber is equipped with insulating end cover 3, be equipped with the leading-out terminal 4 that is connected with transformer body on the insulating end cover 3, be provided with high temperature resistant thermal-insulated coating 5 on four sides of shell.
In addition, a high-temperature-resistant heat-insulating coating can be coated on the lower surface of the insulating end cover 3, the outlet terminal 4 is in an L shape, a straight-line-shaped groove is formed in the insulating end cover 3, one end of the outlet terminal 4 is exposed out of the insulating end cover 3, the other end of the outlet terminal 4 extends into the straight-line-shaped groove, and a fixing nut 401 is arranged at the position of the outlet terminal 4;
four corners of the insulating end cover 3 are respectively provided with a fixing hole 301, the shell is correspondingly provided with a thread fixing hole 103, and the insulating end cover 3 is fixed on the shell 1 through the matching of a bolt and the thread fixing hole; the lower end of the outer shell 1 is provided with a mounting edge 104, four corners of the mounting edge 104 are respectively provided with a mounting hole 105, and the high-temperature-resistant heat-insulating coating 5 extends to the mounting edge.
In this embodiment, the flatness of the lower surface of the housing is controlled below 0.05mm, the roughness is controlled below 3.2 μm, the flatness and the roughness of the lower surface of the housing are required, so that the transformer housing and the cooling plate can be better attached, the heat transmission effect is improved, in addition, heat-conducting silicone grease is further arranged between the lower surface of the housing of the transformer and the water cooling plate, heat is conducted through the silicone grease, the lower surface of the housing and the water cooling plate can be completely attached, the heat dissipation capacity is further improved, the environmental temperature in the whole cabinet and the temperature rise of the transformer body are effectively reduced, and the service lives of other thermosensitive elements are ensured.
The thickness of the high-temperature-resistant heat-insulation coating can be 2-5mm, specifically in the embodiment, the thickness of the high-temperature-resistant heat-insulation coating is 3mm, the high-temperature-resistant heat-insulation coating adopts ZS-1 high-temperature-resistant heat-insulation paint, the main function of the coating is to prevent heat conduction, the heat conductivity coefficient is close to the vacuum heat conductivity coefficient, the heat conductivity coefficient is low, the radiant heat and the conduction heat can be effectively inhibited and shielded, the heat insulation inhibition efficiency can reach about 90%, the heat radiation and the heat loss of a high-temperature object can be inhibited, and the coating has the advantages of water resistance, crack prevention, fire prevention, sound insulation, flame retardation, wear resistance, acid and alkali resistance, light weight.
Experiments prove that the temperature rise of the high-frequency transformer body is reduced from 93K to 76K, the operation reliability is greatly improved, the average ambient temperature of a frequency conversion cabinet body arranged close to the high-frequency transformer body is reduced from 75 ℃ to 60 ℃, and the service life of the rest thermosensitive elements is improved by 30%.
The utility model discloses a heat radiation structure for track traffic's high frequency transformer, it is through setting up the water-cooling board on the surface at the shell of transformer, it has the coolant liquid to cool off to lead to in the water-cooling board, other at the shell of transformer coat high temperature resistant thermal insulation coating on the surface simultaneously, when the transformer operates, because high temperature resistant thermal insulation coating, the heat can't be from other surface conduction, can only carry out heat-conduction through the surface that is equipped with the water-cooling board, it carries out the heat exchange to lead to the coolant liquid in the cooling board, the coolant liquid of circulation takes away the heat, concentrate the heat dissipation through the setting of high temperature resistant thermal insulation coating, make heat-conduction more high-efficient, the effectual heat that produces transformer work is taken away, thereby reduce the temperature rise of transformer during operation, play good cooling effect, be favorable to the steady operation of.
The utility model discloses a heat radiation structure for track traffic's high frequency transformer, the utility model discloses simple structure, the function is practical, has good radiating effect, it is through setting up the water-cooling board on the lower surface of the shell of transformer, the water-cooling board is expert to have the coolant liquid to cool off, coat high temperature resistant thermal-insulated coating on the side of the shell of transformer simultaneously, the upper end of the shell of transformer is provided with insulating end cover, insulating end cover thermal conductivity coefficient is low, can insulate against heat, when the transformer operates, because high temperature resistant thermal-insulated coating, the heat can't be conducted from other surfaces, can only carry out heat conduction through the surface that is equipped with the water-cooling board, expert coolant liquid in the cooling board carries out the heat exchange, the circulating coolant liquid takes away the heat, concentrate the heat dissipation through the setting of high temperature resistant thermal-insulated coating, make the heat conduction more high-efficient, effectively, therefore, the temperature rise of the transformer during working is reduced, a good cooling effect is achieved, stable operation of the transformer is facilitated, and the service life of the transformer is prolonged.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a heat radiation structure for track traffic's high frequency transformer, includes the shell, be provided with the transformer in the shell and hold the chamber, the transformer holds the intracavity and is provided with transformer body, its characterized in that: the transformer cavity is characterized in that a water cooling plate is arranged below the lower surface of the shell in a clinging mode and located below the transformer cavity, cooling liquid is communicated with the water cooling plate, an insulating end cover is arranged on the upper end cover of the transformer cavity, wire outgoing terminals connected with the transformer body are arranged on the insulating end cover, high-temperature-resistant heat insulation coatings are arranged on four side faces of the shell, and high-heat-conductivity resin is filled in the transformer cavity.
2. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 1, characterized in that: the lower surface of the housing is arranged to be flat.
3. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 2, characterized in that: and heat-conducting silicone grease is arranged between the lower surface of the shell and the water cooling plate.
4. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 2, characterized in that: the flatness of the lower surface of the housing is controlled to be less than 0.05mm, and the roughness of the lower surface of the housing is controlled to be less than 3.2 mu m.
5. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 2, characterized in that: the high thermal conductive resin is MC 62.
6. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 1, characterized in that: the high-temperature-resistant heat-insulation coating adopts a ZS-1 high-temperature-resistant heat-insulation coating.
7. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 6, wherein: and the lower surface of the insulating end cover is coated with a high-temperature-resistant heat-insulating coating.
8. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 1, characterized in that: the wire-outgoing terminal is L-shaped, a straight-line-shaped groove is formed in the insulating end cover, one end of the wire-outgoing terminal is exposed out of the insulating end cover, the other end of the wire-outgoing terminal extends into the straight-line-shaped groove, and a fixing nut is arranged at the position of the wire-outgoing terminal.
9. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 1, characterized in that: the four corners of the insulating end cover are respectively provided with a fixing hole, the shell is correspondingly provided with a thread fixing hole, and the insulating end cover is matched and fixed on the shell through bolts and the thread fixing hole.
10. The heat dissipation structure of a high-frequency transformer for rail transit according to claim 1, characterized in that: the heat-insulating coating is characterized in that a mounting edge is arranged at the lower end of the shell, mounting holes are formed in four corners of the mounting edge respectively, and the high-temperature-resistant heat-insulating coating extends to the mounting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465943.2U CN211265170U (en) | 2019-12-31 | 2019-12-31 | Heat dissipation structure of high-frequency transformer for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465943.2U CN211265170U (en) | 2019-12-31 | 2019-12-31 | Heat dissipation structure of high-frequency transformer for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265170U true CN211265170U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922465943.2U Active CN211265170U (en) | 2019-12-31 | 2019-12-31 | Heat dissipation structure of high-frequency transformer for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211265170U (en) |
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2019
- 2019-12-31 CN CN201922465943.2U patent/CN211265170U/en active Active
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