CN112562991A - Heat radiator for dry-type transformer coil - Google Patents
Heat radiator for dry-type transformer coil Download PDFInfo
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- CN112562991A CN112562991A CN202011214661.6A CN202011214661A CN112562991A CN 112562991 A CN112562991 A CN 112562991A CN 202011214661 A CN202011214661 A CN 202011214661A CN 112562991 A CN112562991 A CN 112562991A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a heat dissipation device for a dry-type transformer coil, which comprises a transformer framework, wherein a winding installation mechanism and a coil winding module are arranged at the periphery of the transformer framework, a coil heat dissipation mechanism is arranged at the bottom of the transformer framework, the coil winding module comprises a plurality of high-voltage side coil windings or low-voltage side coil windings, the winding installation mechanism is used for nesting and fixing the high-voltage side coil windings or the low-voltage side coil windings in the coil winding module to the periphery of the transformer framework, an air duct for coil heat dissipation is reserved between any adjacent high-voltage side coil windings or low-voltage side coil windings, and the coil heat dissipation mechanism is used for providing cooling wind power for each air duct for coil heat dissipation. According to the invention, the specification of the air channel does not need to be adjusted according to the capacity of the transformer, and only the cooling wind power of the coil heat dissipation mechanism needs to be adjusted.
Description
Technical Field
The invention relates to the technical field of power transformation, in particular to a heat dissipation device for a coil of a dry-type transformer.
Background
The transformer is power equipment for changing alternating voltage by utilizing the principle of electromagnetic induction, can play roles of voltage transformation, current transformation, impedance transformation, voltage stabilization and the like in a circuit, and has wide application in a plurality of fields such as power supply, mechanical manufacturing, metallurgy, railways and the like;
along with increasingly fierce competition of the transformer industry, the production efficiency of the transformer is improved, the cost is reduced, the product quality is improved, and the safety and stability are important means for improving the enterprise competitiveness, the safety and stability of the transformer are embodied in the aspect of reducing the heating loss of a transformer coil, an external blowing fan is used for blowing away heat on the surface of the transformer coil in the current commonly used coil heat dissipation method, but the fan can only blow on the surface of the coil to reduce the surface temperature of the coil, and because a heating wire in the coil is wrapped by epoxy resin, the heat in the coil is difficult to effectively reduce, a plurality of air passages can be added when the coil is assembled, the air passages are generally rolled and fixed in the coil by a steel plate, and therefore, the heat in the coil can be reduced;
although increasing the air passages may be beneficial for heat dissipation of the coil, the method of increasing the plurality of air passages also has the following disadvantages: firstly, the specification of the air passage is difficult to control so as to completely adapt to the heat dissipation requirement of the transformer coil, multiple matching experiments are needed, the difficulty of coil manufacturing is increased, the air passages with different specifications are required to be processed again according to the corresponding heat dissipation requirement according to the difference of the capacity of the transformer, and the universality is poor; secondly, the air flue needs to be fixed inside the coil, is difficult to maintain when following troubles such as jam, can only expose the air flue through the mode that the coil was dismantled and dredge, wastes time and energy and still can lead to the coil to be difficult to restore, and the whole state of sinking into of transformer is scrapped.
Disclosure of Invention
The invention aims to provide a heat dissipation device for a dry type transformer coil, which aims to solve the technical problems of complex processing, poor universality and difficult maintenance in the prior art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a heat dissipation device for a dry-type transformer coil comprises a transformer framework, wherein a winding installation mechanism and a coil winding module are arranged on the outer periphery of the transformer framework, a coil heat dissipation mechanism is arranged at the bottom of the transformer framework and comprises a plurality of high-voltage side coil windings or low-voltage side coil windings, the winding installation mechanism is used for fixing the high-voltage side coil windings or the low-voltage side coil windings in the coil winding module to the outer periphery of the transformer framework in an embedded mode, an air duct for heat dissipation of the coil is reserved between any adjacent high-voltage side coil windings or low-voltage side coil windings, and the coil heat dissipation mechanism is used for providing cooling wind power for each air duct for heat dissipation of the coil.
As a preferred scheme of the invention, the winding installation mechanism comprises a left installation module and a right installation module which are symmetrically arranged at the left side and the right side of the transformer framework, the left installation module is formed by splicing a plurality of independent left installation parts, the cross section plane formed by splicing the plurality of left installation parts on the left side of the transformer framework in sequence is a plurality of left semi-ring structures which extend outwards from the edge of the transformer framework in sequence, the right installation module is formed by splicing a plurality of independent right installation parts, the cross section plane formed by splicing the plurality of right installation parts on the right side of the transformer framework in sequence is a plurality of right semi-ring structures which extend outwards from the edge of the transformer framework in sequence, the left installation parts and the right installation parts are in one-to-one correspondence, the corresponding left installation parts and the right installation parts are jointed at the central, or the whole ring structure is separated into a left half ring structure or a right half ring structure.
As a preferable scheme of the invention, the left mounting part comprises two left mounting brackets which are flush with two end faces of the transformer framework and an arc-shaped supporting face which is positioned between the two left mounting brackets and has the same bending shape with the left side of the transformer framework, the right mounting part comprises two right mounting brackets which are flush with the two end faces of the transformer framework and an arc-shaped supporting face which is positioned between the two right mounting brackets and has the same bending shape with the right side of the transformer framework, clamping grooves which are matched with the edges of the two end faces of the transformer framework are inwards sunken on the sides, facing the transformer framework, of the left mounting bracket and the right mounting bracket, and the clamping grooves are clamped at the edges of the two end faces of the transformer framework or separated from the edges of the two end faces of the transformer framework under.
As a preferable scheme of the invention, the whole ring structure is formed by jointing a left mounting bracket and a right mounting bracket at the central shaft of the transformer framework, connecting bulges are arranged on the end surfaces of the left mounting bracket, which are positioned at the central shaft of the transformer framework, facing the right mounting bracket, connecting grooves for embedding and fitting the connecting bulges are arranged on the end surfaces of the left mounting bracket, which are positioned at the central shaft of the transformer framework, facing the right mounting bracket, and clamping spring plates with two ends fixed on the groove walls of the connecting grooves are arranged on two sides of each connecting groove.
According to a preferable scheme of the invention, the side, facing away from the transformer framework, of each of the left mounting bracket and the right mounting bracket is provided with an edge structure consistent with the edge structure of the transformer framework, the arc-shaped supporting surface between the two left mounting brackets and the arc-shaped supporting surface between the two right mounting brackets are jointed with the left mounting bracket and the right mounting bracket to form a column structure embedded in the periphery of the transformer framework, the number of the column structures is the same as that of the whole ring structures formed by the left mounting pieces and the right mounting pieces, and a mounting space for mounting the coil winding module is arranged between the adjacent column structures.
According to a preferred scheme of the invention, the coil winding module comprises a plurality of installation ring bodies consistent with a cylinder structure, the installation ring bodies are nested in the outer periphery of the cylinder structure under the action of external force and enter the installation space or move upwards from the outer periphery of the cylinder structure to be separated from the installation space, high-voltage coils or low-voltage coils are arranged on the periphery of the installation ring bodies, splicing leads are arranged outside the high-voltage coils or the low-voltage coils and fixed on the upper end face of the installation ring bodies, the splicing leads are used for electrically connecting the high-voltage coils or the low-voltage coils on the installation ring bodies to form high-voltage side coil windings or low-voltage side coil windings, connecting copper columns are arranged at the splicing leads, and the connecting copper.
As a preferred scheme of the invention, the coil heat dissipation mechanism comprises an air box arranged at the bottom of the transformer framework, annular air supply pipelines are communicated between the top of the air box and the bottom of each installation space, the arrangement of the air supply pipelines is the same as the annular shape of the high-voltage coil or the low-voltage coil, air outlet holes which are communicated with the outside air and are consistent with the arrangement of the annular air supply pipelines are formed in the top of the installation space, and the air box, the air supply pipelines, the installation space and the air outlet holes form a cooling channel for supplying cooling wind power to the high-voltage coil or the low-voltage coil.
As a preferable scheme of the invention, a power device is arranged in the air box, and the range of air flow generated by the power device is consistent with the cross section area of the air supply pipeline.
Compared with the prior art, the invention has the following beneficial effects:
the invention assembles the winding installation mechanism on the periphery of the transformer framework layer by layer in a stacked installation space structure formed by fixing the winding installation mechanism with the high-voltage coil or the low-voltage coil installation ring body, uses the splicing lead wire to electrically connect the high-voltage coil or the low-voltage coil on a plurality of installation ring bodies to form the high-voltage side coil winding or the low-voltage side coil winding which is stacked on the periphery of the transformer framework layer by layer so as to realize the function of voltage transformation, and the installation space structure contained in the winding installation mechanism for the installation ring body is communicated with the coil heat dissipation mechanism at the bottom of the transformer framework to form a cooling channel for cooling the high-voltage coil or the low-voltage coil on the installation ring body of each layer, and adopts the stacked splicing type to install the high-voltage coil or the low-voltage coil, so as to change the epoxy resin wrapping and, and the cooling channel is directly arranged in the installation space where the high-voltage coil or the low-voltage coil is located, the high-voltage coil or the low-voltage coil on each layer can be directly subjected to heat dissipation treatment, the problem that the high-voltage coil or the low-voltage coil cannot be subjected to heat dissipation treatment when being wrapped in the inner coil by epoxy resin is solved, the heat dissipation efficiency and the heat dissipation effect are improved, and when the installation space is used as one part of the cooling channel, the air channel specification adjustment is not required to be carried out on the transformer capacity, only the cooling wind power provided by the coil heat dissipation mechanism needs to be adjusted, further, the splicing type installation mode is convenient for subsequent cleaning and maintenance of the cooling channel, the coil winding is not required to be disassembled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without paying any inventive effort.
Fig. 1 is a schematic front view of a heat dissipation device for a coil according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of a heat dissipation device for a coil according to an embodiment of the present invention;
fig. 3 is a schematic view of a connecting copper pillar structure according to an embodiment of the present invention;
FIG. 4 is an enlarged structural diagram of A in FIG. 2 according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of an air supply duct according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a transformer skeleton; 2-a winding mounting mechanism; 3-a coil winding module; 4-a coil heat dissipation mechanism; 5-a left mounting bracket; 6-arc supporting surface; 7-right mounting bracket; 8-clamping the groove; 9-connecting the bumps; 10-connecting grooves; 11-clamping spring plate; 12-an installation space; 13-high voltage coil or low voltage coil;
201-left mounting module; 202-right mounting module;
2011-left mount; 2021-right mount;
301-mounting the ring; 302-splicing the leads; 303-connecting copper columns;
401-wind box; 402-air supply ducts; 403-air outlet holes; 404-power plant.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the invention provides a heat dissipation device for a dry-type transformer coil, which includes a transformer framework 1, wherein a winding installation mechanism 2 and a coil winding module 3 are arranged on the outer periphery of the transformer framework 1, a coil heat dissipation mechanism 4 is arranged at the bottom of the transformer framework 1, the coil winding module 3 includes a plurality of high-voltage side coil windings or low-voltage side coil windings, the winding installation mechanism 2 is used for nesting and fixing the plurality of high-voltage side coil windings or low-voltage side coil windings in the coil winding module 3 on the outer periphery of the transformer framework 1, an air duct for coil heat dissipation is reserved between any adjacent high-voltage side coil windings or low-voltage side coil windings, and the coil heat dissipation mechanism 4 is used for providing cooling wind power for each air duct for coil heat dissipation.
In the present embodiment, the cross section of the transformer bobbin 1 may be in a shape of a mouth, a sun, or a ring, and in the following description, the ring transformer bobbin 1 is used for the aspect description, and when the transformer is implemented, the number of the high voltage coils and the low voltage coils in the winding module may be set according to the actual requirement of the transformer application, for example, one, two, or other numbers may be set, and all of them are within the protection scope of the present invention.
The invention assembles the winding installation mechanism on the periphery of the transformer framework layer by layer in a stacked mode, then fixes the winding installation mechanism with the high-voltage coil or low-voltage coil installation ring body wound in the stacked installation space structure, and uses the splicing lead for electrically connecting the high-voltage coil or the low-voltage coil on a plurality of installation ring bodies to form the high-voltage side coil winding or the low-voltage side coil winding which is stacked on the periphery of the transformer framework layer by layer so as to realize the function of voltage transformation.
In addition, an installation space structure used for accommodating the installation ring body in the winding installation mechanism is communicated with a coil heat dissipation mechanism at the bottom of the transformer framework to form a cooling channel for cooling the high-voltage coil or the low-voltage coil on the installation ring body of each layer, the high-voltage coil or the low-voltage coil is installed in a stacking splicing mode, the epoxy resin wrapping and winding mode of the high-voltage coil or the low-voltage coil is changed into stacking gap installation, the cooling channel is directly positioned in the installation space where the high-voltage coil or the low-voltage coil is located, heat dissipation treatment can be directly carried out on the high-voltage coil or the low-voltage coil of each layer, the problem that heat dissipation treatment cannot be carried out on the inner part of the internal coil wrapped by epoxy resin is solved.
When the installation space is used as a part of the cooling channel, the specification of the air duct does not need to be adjusted according to the capacity of the transformer, the cooling wind power provided by the coil heat dissipation mechanism only needs to be adjusted, and further, the splicing installation mode is convenient for subsequent cleaning and maintenance of the cooling channel, the coil winding does not need to be disassembled, and the installation space is simple and convenient.
The winding installation mechanism 2 comprises a left installation module 201 and a right installation module 2021 which are symmetrically arranged at the left side and the right side of a transformer framework 1, the left installation module 201 is formed by splicing a plurality of independent left installation parts 2011, a cross section plane formed by sequentially splicing the left installation parts 2011 at the left side of the transformer framework 1 is a plurality of left semi-ring structures which sequentially extend outwards from the edge of the transformer framework 1, the right installation module 202 is formed by splicing a plurality of independent right installation parts 2021, a cross section plane formed by sequentially splicing the right installation parts 2021 at the right side of the transformer framework 1 is a plurality of right semi-ring structures which sequentially extend outwards from the edge of the transformer framework 1, the left installation parts 2011 and the right installation parts 2021 are in one-to-one correspondence, the corresponding left installation parts 2011 and the corresponding right installation parts 2021 are jointed at the central shaft of the transformer framework 1 under the action of external, or the whole ring structure is separated into a left half ring structure or a right half ring structure.
Wherein, the left mounting pieces 2011 and the right mounting pieces 2021 are sequentially and outwards extended and mounted on the left side and the right side of the transformer framework 1, the left mounting members 2011 and the right mounting members 2021 are adjacently arranged in contact, and the cross-sectional radius of the left mounting part 2011 and the right mounting part 2021 in the direction extending outward from the edge of the bobbin 1 gradually increases, i.e. the more external the cross-sectional radii of the left mounting part 2011 and the right mounting part 2021 are larger, therefore, the external left mounting part 2011 and the external right mounting part 2021 can wrap the internal left mounting part 2011 and the internal right mounting part 2021, a plurality of whole ring shapes formed by jointing the left mounting parts 2011 and the right mounting parts 2021 are nested on the outer periphery part of the transformer framework 1 layer by layer, the coil winding modules 3 positioned on each whole ring shape are installed in a layer-by-layer nesting mode, the occupied volume is small, and the operation is simple.
Left installed part 2011 includes two left installing support 5 that flush with 1 both ends face of skeleton transformer, and be located between two left installing support 5 with the arc holding surface 6 that the crooked shape in skeleton transformer 1 left side is the same, right installed part 2021 includes two right installing support 7 that flush with 1 both ends face of skeleton transformer, and be located between two right installing support 7 with the same arc holding surface 6 of 1 right side crooked shape of skeleton transformer, left side installing support 5 and right installing support 7 all inwards cave in towards one side of skeleton transformer 1 and have with 1 both ends face edge assorted centre gripping recess 8 of skeleton transformer, centre gripping recess 8 centre gripping is in 1 both ends face edge of skeleton transformer under the effect of external force, or take off from 1 both ends face edge of skeleton transformer.
The method for installing the left installation part 2011 and the right installation part 2021 on the transformer bobbin 1 is as follows: firstly, respectively aligning two left mounting brackets 5 with the upper end surface and the lower end surface of a transformer framework 1, then applying horizontal thrust towards the center side of the transformer framework 1 on the two left mounting brackets 5 to embed the edge of the transformer framework 1 into a clamping groove 8, and finishing the operation of fixing a left mounting part 2011 on the transformer framework 1, and similarly, respectively aligning two right mounting brackets 7 with the upper end surface and the lower end surface of the transformer framework 1, then applying horizontal thrust towards the center side of the transformer framework 1 on the two right mounting brackets 7 to embed the edge of the transformer framework 2021 into the clamping groove 8, and finishing the operation of fixing the right mounting part 1 on the transformer framework 1;
the method for detaching the left mounting part 2011 and the right mounting part 2021 from the transformer bobbin 1 is as follows: apply 1 center side horizontal pulling force of transformer skeleton dorsad on two left installing supports 5, make 1 edge of transformer skeleton embedded in centre gripping recess 8 slowly take out until breaking away from completely from centre gripping recess 8 is inside, accomplish left installed part 2011 and dismantle the operation from transformer skeleton 1, and the same is said, apply 1 center side horizontal pulling force of transformer skeleton dorsad on two right installing supports 7, make 1 edge of transformer skeleton embedded in centre gripping recess 8 slowly take out until breaking away from completely from centre gripping recess 8 is inside, accomplish right installed part 2021 and dismantle the operation from transformer skeleton 1.
As shown in fig. 2 and 4, the whole ring structure is formed by joining a left mounting bracket 5 and a right mounting bracket 7 at the center axis of a transformer framework 1, a connecting protrusion 9 is arranged on the end surface of the left mounting bracket 5 at the center axis of the transformer framework 1 and facing the right mounting bracket 7, a recessed connecting groove 10 for embedding and attaching the connecting protrusion 9 is arranged on the end surface of the left mounting bracket 5 at the center axis of the transformer framework 1 and facing the right mounting bracket 7, clamping spring plates 11 with two ends fixed on the groove walls of the connecting groove 10 are arranged on two sides of the connecting groove 10, and the connecting protrusion 9 is pushed between the clamping spring plates 11 on two sides under the action of external force or pulled out from between the clamping spring plates 11 on two sides.
The clamping spring plates 11 are wavy, the clamping spring plates 11 on two sides of the groove wall of the connecting groove 10 are oppositely arranged, a groove space for accommodating and clamping the connecting protrusion 9 is formed between the wave troughs of the clamping spring plates 11 on two sides, a bayonet for preventing the connecting protrusion 9 from being separated is formed between the wave crests on two sides of one side of the opening of the connecting groove 10, and the elastic clamping spring plates 11 on two sides are far away from each other when the connecting protrusion 9 is inserted or pulled out, so that the bayonet is opened to allow the connecting protrusion 9 to be inserted into or pulled out of the connecting groove 10;
when the left mounting bracket 5 and the right mounting bracket 7 are jointed, the connecting bulge 9 enters the groove space formed by the clamping spring plates 11 at the two sides from the opening of the connecting groove 10, therefore, the joint end surfaces of the left mounting bracket 5 and the right mounting bracket 7 can be accurately connected under the condition that the connecting bulge 9 is inserted into the connecting groove 10, the phenomenon of dislocation of overlapped tight joints between the contact surfaces is ensured, the annular cylinder formed by the joint of the left mounting bracket 5 and the right mounting bracket 7 is ensured to be embedded in the peripheral part of the transformer framework 1, and the connection method that the connecting protrusion 9 is inserted into the connecting groove 10 can also avoid the shaking of the left mounting bracket 5 and the right mounting bracket 7 during the use of the transformer to cause the shaking and dislocation between the combined side walls of the two, the winding module 3 arranged outside the whole ring shape is damaged by physical contact, and the working safety and stability of the transformer are ensured.
In order to facilitate the layer-by-layer overlapping installation of the left installation part 2011, the side, back to the transformer framework 1, of each of the left installation support 5 and the right installation support 7 has an edge structure consistent with the edge structure of the transformer framework 1, and then the installation and disassembly methods of the left installation supports 5 and the transformer framework 1 are adopted when the left installation supports 5 and the right installation supports 7 are installed in an outward expanding mode.
Arc holding surface 6 between two left installing supports 5 and the arc holding surface 6 between two right installing supports 7 form the cylinder structure of nestification in transformer skeleton 1 periphery under left installing support 5 and the joint of right installing support 7, the cylinder structure is nested the mounting structure in transformer skeleton 1 periphery as coil winding module 3, the quantity of cylinder structure is the same with the quantity that left installed part 2011 and right installed part 2021 form the whole ring structure, there is installation space 12 that supplies high voltage coil or low voltage coil to install in the coil winding module 3 between the adjacent cylinder structure.
As shown in fig. 1 and 3, in order to place a high-voltage coil or a low-voltage coil in an installation space 12 and form a stacked nesting at the periphery of a transformer framework 1 to perform a transformation function, the invention provides a coil winding module 3, the coil winding module 3 specifically comprises a plurality of installation ring bodies 301 consistent with a cylindrical structure, the installation ring bodies 301 are nested at the periphery of the cylindrical structure under the action of external force and enter the installation space 12 or move upwards from the periphery of the cylindrical structure and are separated from the installation space 12, the periphery of the installation ring bodies 301 is provided with the high-voltage coil or the low-voltage coil, and a splicing lead 302 externally arranged on the high-voltage coil or the low-voltage coil is fixed on the upper end face of the installation.
The splicing lead 302 is used for electrically connecting a plurality of high-voltage coils or low-voltage coils on the installation ring body 301 to form a high-voltage side coil winding or a low-voltage side coil winding, the high-voltage coils or the low-voltage coils arranged in the installation space 12 along with the installation ring body 301 jointly form the high-voltage side coil winding or the low-voltage side coil winding, namely, the high-voltage coils and the low-voltage coils are wrapped by epoxy resin for insulation treatment in the middle of the outer part of the traditional transformer framework 1, the inner coils wrapped by the epoxy resin are in a closed state and difficult to heat, a plurality of mutually isolated installation spaces 12 for accommodating the high-voltage coils or the low-voltage coils are built at the outer peripheral part of the transformer framework 1 by using the left installation module 201 and the right installation module 202, the installation spaces 12 provide a heat dissipation space for the high-voltage coils or the low-voltage coils to dissipate heat, and the heat dissipation space dissipates, accomplish the dispersion heat dissipation, avoid concentrating the heat dissipation and appear the unable problem that gives off the conduction of inside closed coil heat.
The splicing lead 302 is provided with a connecting copper column 303, the connecting copper column 303 is electrically connected with the splicing lead 302, the mode of forming a high-voltage side coil winding or a low-voltage side coil winding by a plurality of high-voltage coils or low-voltage coils is that the connecting copper columns 303 between the high-voltage coils are directly connected in series, in star connection or in other connection modes to form the high-voltage side coil winding, and the connecting copper columns 303 between the low-voltage coils are also connected in series, in star connection or in other connection modes to form the high-voltage side coil winding.
As shown in fig. 1 and 5, the coil heat dissipation mechanism 4 includes an air box 401 disposed at the bottom of the transformer bobbin 1, an annular air supply duct 402 communicated between the top of the air box 401 and the bottom of each installation space 12, the air supply duct 402 is arranged in the same annular shape as the high-voltage coil or the low-voltage coil, the top of the installation space 12 is provided with air outlets 403 communicated with the outside air and arranged in the same annular air supply duct 402, and the air box 401, the air supply duct 402, the installation space 12 and the air outlets 403 constitute a cooling channel for supplying cooling wind power to the high-voltage coil or the low-voltage coil; the power device 404 is arranged in the wind box 401, the power device 404 is a fan or a gas with electronic components generating linear airflow, and the airflow generated by the power device 404 is consistent with the cross section area of the air supply pipeline 402, so that airflow can reach each air supply pipeline 402.
The specific way of the coil heat dissipation mechanism 4 for dissipating heat of the high-voltage coil or the low-voltage coil is as follows: firstly, the power device 404 is started to generate upward linear airflow, the linear airflow air supply pipeline 402 enters the installation space 12 from the bottom of the installation space 12 to circulate upward, then contacts with the high-voltage coil or the low-voltage coil in the installation space 12 in the process that the linear airflow in the installation space 12 flows upward, and takes away heat generated by the high-voltage coil or the low-voltage coil along the upward flowing direction until the linear airflow flows out of the air outlet at the top of the installation space 12 to the outside air, and the power device 404 continuously outputs linear airflow to continuously take away heat generated by the high-voltage coil or the low-voltage coil due to work, so that continuous heat dissipation of the coils is realized.
After the coil heat dissipation mechanism 4 breaks down, firstly, the installation ring body 301 is slowly lifted up until the bottom of the installation ring body 301 is separated from the top of the column structure, and then, according to the position of the failure, for example, the installation ring body is located on the left side or the right side of the transformer framework 1, taking the left side as an example, the clamping groove 8 of the left installation support 5 is separated from the edge structure of the left installation support 5 inside, and the installation space 12 is exposed and used for dredging or replacing the air supply pipeline 402 located below.
According to the invention, the winding installation mechanisms 2 are assembled on the periphery of the transformer framework 1 layer by layer in a telescopic manner, then the winding installation mechanisms 2 are fixed by the high-voltage coil or low-voltage coil installation ring bodies 301 to form a structure of the laminated installation space 12, and the splicing lead wires 302 are used for electrically connecting the high-voltage coils or the low-voltage coils on the installation ring bodies 301 to form a high-voltage side coil winding or a low-voltage side coil winding which is nested on the periphery of the transformer framework 1 layer by layer so as to realize the transformation function.
And the structure of the installation space 12 for accommodating the installation ring body 301 in the winding installation mechanism 2 is communicated with the coil heat dissipation mechanism 4 at the bottom of the transformer framework 1 to form a cooling channel for cooling the high-voltage coil or the low-voltage coil on the installation ring body 301 of each layer, the high-voltage coil or the low-voltage coil is installed in a laminated splicing mode, the high-voltage coil or the low-voltage coil is wrapped and wound by epoxy resin to form laminated gap installation, the cooling channel is directly positioned in the installation space 12 where the high-voltage coil or the low-voltage coil is positioned, heat dissipation treatment can be directly carried out on the high-voltage coil or the low-voltage coil of each layer, the problem that heat dissipation treatment cannot be carried out inside the internal coil wrapped by the epoxy resin is solved, and the heat dissipation.
When the installation space 12 is used as a part of the cooling channel, the specification of the air duct is not required to be adjusted according to the capacity of the transformer, and only the cooling wind power provided by the coil heat dissipation mechanism 4 is required to be adjusted.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (8)
1. A heat abstractor for dry-type transformer coil which characterized in that: including transformer skeleton (1), transformer skeleton (1) is provided with winding installation mechanism (2) and coil winding module (3) outward, transformer skeleton (1) bottom is equipped with coil heat dissipation mechanism (4), coil winding module (3) contain a plurality of side coil windings, the side coil winding is high-pressure side coil winding or low pressure side coil winding, the side coil winding passes through winding installation mechanism (2) nested being fixed in outside transformer skeleton (1), adjacent two be formed with between the side coil winding and supply the radiating wind channel of coil, coil heat dissipation mechanism (4) are arranged in supplying to every and provide cooling wind-force in the radiating wind channel of coil.
2. The heat sink for the coil of the dry-type transformer as set forth in claim 1, wherein: winding installation mechanism (2) are in including the symmetry setting left side installation module (201) and right side installation module (202) of transformer skeleton (1) both sides, left side installation module (201) comprises a plurality of independent left installed part (2011) concatenations, each left side installed part (2011) concatenates in proper order the left side of transformer skeleton (1), right side installation module (202) comprises a plurality of independent right installed part (2021) concatenations, each right side installed part (2021) concatenates in proper order the right side of transformer skeleton (1), left side installed part (2011) with right installed part (2021) one-to-one corresponds, corresponds left side installed part (2011) with right installed part (2021) joint forms whole ring structural nesting outside transformer skeleton (1).
3. A heat sink for a dry-type transformer coil as set forth in claim 2, wherein: the left mounting part (2011) comprises two left mounting brackets (5) which are flush with two end faces of the transformer framework (1), and an arc-shaped supporting surface (6) which is positioned between the two left mounting brackets (5); the right mounting piece (2021) comprises two right mounting brackets (7) which are flush with two end faces of the transformer framework (1), and an arc-shaped supporting face (6) positioned between the two right mounting brackets (7); left side installing support (5) with right side installing support (7) orientation one side of transformer skeleton (1) all inwards caves in and has centre gripping recess (8) centre gripping is in transformer skeleton (1) both ends edge.
4. A heat sink for a dry-type transformer coil as set forth in claim 3, wherein: left side installing support (5) are located be provided with on transformer skeleton (1) center pin department is provided with on the terminal surface of right installing support (7) and connect protruding (9), left side installing support (5) are located transformer skeleton (1) center pin department and are provided with on the terminal surface of right installing support (7) sunken connecting protrusion (9) embedded coupling groove (10) of laminating, both ends are all installed to the both sides of connecting groove (10) and are fixed centre gripping spring plate (11) on connecting groove (10) cell wall, connect protruding (9) and be located both sides between centre gripping spring plate (11).
5. The heat sink for the coil of the dry-type transformer as set forth in claim 4, wherein: left side installing support (5) with right side installing support (7) dorsad transformer skeleton (1) one side all be equipped with the edge structure that transformer skeleton (1) edge structure is unanimous, two between left side installing support (5) arc holding surface (6) and two between right side installing support (7) arc holding surface (6) are formed with the cylinder structure, the cylinder structure nestification is in outside transformer skeleton (1), the quantity of cylinder structure with the quantity of whole ring structure is the same, adjacent two be formed with the confession between the cylinder structure installation space (12) of coil winding module (3) installation.
6. A heat sink for a dry-type transformer coil as set forth in claim 5, wherein: the coil winding module (3) comprises a plurality of installation ring bodies (301) consistent with a cylinder structure, the installation ring bodies (301) are nested outside the cylinder structure, coils are arranged outside the installation ring bodies (301), the coils are high-voltage coils or low-voltage coils, splicing leads (302) fixed on the upper end faces of the installation ring bodies (301) are arranged outside the coils, the splicing leads (302) are electrically connected with the coils to form coil windings, and the splicing leads (302) are connected with connecting copper columns (303).
7. The heat dissipation device for the dry-type transformer coil according to claim 6, wherein the coil heat dissipation mechanism (4) comprises an air box (401) disposed at the bottom of the transformer bobbin (1), an annular air supply pipeline (402) is communicated between the top of the air box (401) and the bottom of each installation space (12), the air supply pipeline (402) is arranged in the same shape as the coil, the top of the installation space (12) is provided with air outlets (403) which are arranged in the same shape as the annular air supply pipeline (402), and the air box (401), the air supply pipeline (402), the installation space (12) and the air outlets (403) form a cooling channel for providing cooling wind power for the coil.
8. A heat sink for a dry-type transformer coil as set forth in claim 7, wherein: and a power device (404) is arranged in the air box (401), and the range of air flow generated by the power device (404) is consistent with the cross section area of the air supply pipeline (402).
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| CN202011214661.6A CN112562991B (en) | 2020-11-04 | 2020-11-04 | Heat radiator for dry-type transformer coil |
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| CN202011214661.6A CN112562991B (en) | 2020-11-04 | 2020-11-04 | Heat radiator for dry-type transformer coil |
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Cited By (1)
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|---|---|---|---|---|
| CN113096934A (en) * | 2021-04-06 | 2021-07-09 | 阳光电源股份有限公司 | Fill electric pile and magnetic component thereof |
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| Publication number | Publication date |
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| CN112562991B (en) | 2022-03-04 |
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