CN210296096U - Honeycomb radiating coil for transformer - Google Patents
Honeycomb radiating coil for transformer Download PDFInfo
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- CN210296096U CN210296096U CN201921753431.XU CN201921753431U CN210296096U CN 210296096 U CN210296096 U CN 210296096U CN 201921753431 U CN201921753431 U CN 201921753431U CN 210296096 U CN210296096 U CN 210296096U
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Abstract
The utility model discloses a honeycomb heat dissipation coil for transformer, the coil has at least two-layer heat dissipation channel, every layer heat dissipation channel includes a plurality of louvres, the louvre is waist type hole, and all the cross sectional shape of louvre is the same, the louvre runs through the both ends of coil, every layer louvre in the heat dissipation channel is followed the lateral wall equipartition of the hole of coil. The heat dissipation coil of the utility model has the advantages that the heat dissipation channel is composed of a plurality of heat dissipation holes with smaller sections, and the section shapes of the heat dissipation holes are the same, so that the pouring of the heat dissipation channel can be completed by using a pouring core rod with one specification, and the cost is saved; and the area of the heat dissipation wall of the honeycomb-shaped heat dissipation channel is greatly increased, so that the honeycomb-shaped heat dissipation channel has excellent heat dissipation capacity, the heat dissipation performance of the coil is improved, and the service life of the transformer can be prolonged.
Description
Technical Field
The utility model belongs to the technical field of the transformer, especially, relate to a honeycomb radiating coil for transformer.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core (magnetic core), and the transformer has the main functions of: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like;
in the prior art, the coil of the dry-type transformer is mostly of an epoxy resin integrated pouring type, the manufacturing process is simple, the stability is excellent, and the cost is not high; however, when the integrated coil is used, due to the reason of integral casting, the heat dissipation performance of the integrated coil is not very good, so that a plurality of heat dissipation channels are arranged in the coil, and the heat dissipation channels in the prior art are shown in fig. 1: the heat dissipation channel 11A of the coil 1A is distributed around the inner hole 12A, the heat dissipation channel is in a strip shape with a large section, and when the heat dissipation channel is manufactured, because the coil is in an arc shape, a pouring core rod of the heat dissipation channel is required to be arranged in various shapes, so that the cost is increased; in addition, after the transformer assembly is completed, cushion blocks (not shown) are installed at two ends of the coil, and the cushion blocks easily block heat dissipation channels at two ends of the coil, so that the heat dissipation effect is influenced, and the transformer is seriously damaged due to overheating.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problem of providing a honeycomb radiating coil for a transformer, wherein a radiating channel is composed of a plurality of radiating holes with smaller sections, and the sectional shapes of the radiating holes are the same, so that the casting of the radiating channel can be completed by using a casting core rod with one specification, thereby saving the cost; and the area of the heat dissipation wall of the honeycomb-shaped heat dissipation channel is greatly increased, so that the honeycomb-shaped heat dissipation channel has excellent heat dissipation capacity, the heat dissipation performance of the coil is improved, and the service life of the transformer can be prolonged.
In order to solve the technical problem, the utility model discloses a technical scheme of adoption as follows:
the utility model provides a honeycomb heat dissipation coil for transformer, coil formula epoxy casting coil as an organic whole, the coil has at least two-layer heat dissipation channel, every layer heat dissipation channel includes a plurality of louvres, the louvre is waist type hole, and all the cross sectional shape of louvre is the same, the louvre runs through the both ends of coil, every layer louvre in the heat dissipation channel is followed the lateral wall equipartition of the hole of coil, the hole of coil is used for wearing transformer core, every layer heat dissipation channel is followed the radial range upon range of setting of hole.
Furthermore, a plurality of grooves are formed in two ends of the coil, and the grooves are located between every two adjacent heat dissipation holes and communicated with each heat dissipation hole in the heat dissipation channel.
Further, a communication port is arranged between the adjacent heat dissipation channels and is communicated with the adjacent two sides of the heat dissipation channels.
Further, the distance between two adjacent heat dissipation holes in the heat dissipation channel is 1.5-8 mm.
Further, the distance between two adjacent layers of heat dissipation channels is 3-8 mm.
Further, the heat dissipation channel and the coil are integrally cast.
The utility model has the advantages that:
in the coil of the utility model, the heat dissipation channel is composed of a plurality of heat dissipation holes with smaller cross sections, and the cross sections of the heat dissipation holes have the same shape, so that the pouring of the heat dissipation channel can be completed by using a pouring core rod with one specification, thereby saving the cost; the area of the wall of the honeycomb-shaped heat dissipation channel for dissipating heat is greatly increased, so that the honeycomb-shaped heat dissipation channel has excellent heat dissipation capacity, the heat dissipation performance of the coil is improved, and the service life of the transformer can be prolonged;
the utility model discloses a set up the empty recess of intercommunication heat dissipation at the both ends of coil, because the recess communicates each louvre, thereby can form heat exchange in all louvres, and then improve the radiating efficiency; the communicating port is communicated with the adjacent two layers of heat dissipation channels, the heat dissipation efficiency is further improved, the communicating port with the smaller caliber is arranged instead of direct integral communication, the flow exchange of air flow can be formed when the temperature difference of the adjacent two layers of heat dissipation channels is not very large, if the communicating port is integrally communicated, the temperature in the adjacent two layers of heat dissipation channels is the same, and the air cannot flow after being balanced, so that the flow exchange of the air cannot be realized.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a transformer coil in the prior art;
fig. 2 is a schematic view of the whole structure of the honeycomb heat dissipation coil of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a plan view (end view) of the honeycomb heat radiating coil of the present invention;
the parts in the drawings are marked as follows:
coil 1, heat dissipation channel 11, heat dissipation hole 111, inner hole 12, coil 1A, heat dissipation channel 11A, inner hole 12A, heat dissipation channel 11 ', heat dissipation hole 111', groove 13 and communication port 131.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b): a honeycomb heat-dissipating coil for a transformer, as shown in fig. 2 and 3: the coil 1 is an integrated epoxy cast coil and is provided with at least two layers of heat dissipation channels 11;
each layer of heat dissipation channel comprises a plurality of heat dissipation holes 111, the heat dissipation holes are waist-shaped holes, the cross sections of all the heat dissipation holes are the same, the heat dissipation holes penetrate through two ends of the coil, the heat dissipation holes in each layer of heat dissipation channel are uniformly distributed along the side wall of an inner hole 12 of the coil, the inner hole of the coil is used for penetrating through a transformer core, each layer of heat dissipation channel is stacked along the radial direction of the inner hole, and all the heat dissipation holes form a honeycomb-shaped heat dissipation channel;
the existing heat dissipation channel is shown in fig. 1: the heat dissipation channel 11A of the coil 1A is distributed around the inner hole 12A, the heat dissipation channel is in a strip shape with a large section, and when the heat dissipation channel is manufactured, because the coil is in an arc shape, a pouring core rod of the heat dissipation channel is required to be arranged in various shapes, so that the cost is increased;
in the coil of the utility model, the heat dissipation channel is composed of a plurality of heat dissipation holes with smaller cross sections, and the cross sections of the heat dissipation holes have the same shape, so that the pouring of the heat dissipation channel can be completed by using a pouring core rod with one specification, thereby saving the cost;
and the area of the heat dissipation wall of the honeycomb-shaped heat dissipation channel is greatly increased, so that the honeycomb-shaped heat dissipation channel has excellent heat dissipation capacity, the heat dissipation performance of the coil is improved, and the service life of the transformer can be prolonged.
The coil of the present invention is shown in fig. 3: the heat dissipation channel is provided with two layers 11 and 11 ', the heat dissipation channel 11 is composed of a plurality of heat dissipation holes 111, and the heat dissipation channel 11 ' is composed of a plurality of heat dissipation holes 111 '.
In order to further improve the heat dissipation effect, grooves 13 are arranged at two ends of the coil, the number of the grooves is equal to that of the heat dissipation holes, the grooves are arranged at two ends of the heat dissipation channel and are arranged between adjacent heat dissipation holes so as to communicate with each heat dissipation hole in the heat dissipation channel;
after the transformer assembly is completed, cushion blocks (not shown) are installed at two ends of the coil, and the cushion blocks easily block heat dissipation channels at the two ends of the coil, so that the heat dissipation effect is influenced, and the transformer is seriously damaged due to overheating; and the utility model discloses in, set up the empty recess of intercommunication heat dissipation through the both ends at the coil, because each louvre of recess intercommunication to can form heat exchange in all louvres, and then improve the radiating efficiency.
Further, a communication port 131 is further arranged between the grooves at one end, and the adjacent two side heat dissipation channels are communicated through the communication port;
the intercommunication mouth communicates adjacent two-layer heat dissipation channel, further improvement radiating efficiency, set up to the less intercommunication mouth of bore, rather than direct whole intercommunication, can also form the mobile exchange of air current when adjacent two-layer heat dissipation channel's the difference in temperature is not very big, if whole intercommunication, can make the temperature in the adjacent two-layer heat dissipation channel the same, it just can not produce the flow to form gaseous mobile exchange after balanced, consequently, set up the less intercommunication mouth of bore, can form the air current exchange between heat dissipation channel, thereby further improve radiating efficiency.
The distance between two adjacent heat dissipation holes in each layer of heat dissipation channel is 1.5-8 mm.
The distance between two adjacent layers of heat dissipation channels is 3-8 mm.
The heat dissipation channel and the coil are integrally cast.
The utility model discloses a working process and theory of operation as follows:
in the coil of the utility model, the heat dissipation channel is composed of a plurality of heat dissipation holes with smaller cross sections, and the cross sections of the heat dissipation holes have the same shape, so that the pouring of the heat dissipation channel can be completed by using a pouring core rod with one specification, thereby saving the cost; the area of the wall of the honeycomb-shaped heat dissipation channel for dissipating heat is greatly increased, so that the honeycomb-shaped heat dissipation channel has excellent heat dissipation capacity, the heat dissipation performance of the coil is improved, and the service life of the transformer can be prolonged;
the utility model discloses a set up the empty recess of intercommunication heat dissipation at the both ends of coil, because the recess communicates each louvre, thereby can form heat exchange in all louvres, and then improve the radiating efficiency; the intercommunication mouth communicates adjacent two-layer heat dissipation channel, further improvement radiating efficiency, set up to the less intercommunication mouth of bore, rather than direct whole intercommunication, can also form the mobile exchange of air current when adjacent two-layer heat dissipation channel's the difference in temperature is not very big, if whole intercommunication, can make the temperature in the adjacent two-layer heat dissipation channel the same, it just can not produce the flow to form gaseous mobile exchange after balanced, consequently, set up the less intercommunication mouth of bore, can form the air current exchange between heat dissipation channel, thereby further improve radiating efficiency.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (6)
1. A honeycomb heat dissipating coil for a transformer, characterized by: coil (1) formula epoxy casting coil as an organic whole, the coil has at least two-layer heat dissipation channel (11), every layer heat dissipation channel includes a plurality of louvres (111), the louvre is waist type hole, and all the cross sectional shape of louvre is the same, the louvre runs through the both ends of coil, every layer heat dissipation hole in the heat dissipation channel is followed the lateral wall equipartition of hole (12) of coil, every layer heat dissipation channel is followed the radial range upon range of setting of hole.
2. The honeycomb heat dissipating coil for transformers according to claim 1, characterized in that: and a plurality of grooves (13) are arranged at two ends of the coil, are positioned between two adjacent heat dissipation holes and are communicated with each heat dissipation hole in the heat dissipation channel.
3. The honeycomb heat dissipating coil for transformers according to claim 2, characterized in that: a communication port (131) is further arranged between the adjacent heat dissipation channels and is communicated with the adjacent two side heat dissipation channels.
4. The honeycomb heat dissipating coil for transformers according to claim 1, characterized in that: the distance between two adjacent heat dissipation holes in each layer of heat dissipation channel is 1.5-8 mm.
5. The honeycomb heat dissipating coil for transformers according to claim 1, characterized in that: the distance between two adjacent layers of heat dissipation channels is 3-8 mm.
6. The honeycomb heat dissipating coil for transformers according to claim 1, characterized in that: the heat dissipation channel and the coil are integrally cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921753431.XU CN210296096U (en) | 2019-10-18 | 2019-10-18 | Honeycomb radiating coil for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921753431.XU CN210296096U (en) | 2019-10-18 | 2019-10-18 | Honeycomb radiating coil for transformer |
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| Publication Number | Publication Date |
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| CN210296096U true CN210296096U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921753431.XU Active CN210296096U (en) | 2019-10-18 | 2019-10-18 | Honeycomb radiating coil for transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562991A (en) * | 2020-11-04 | 2021-03-26 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
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2019
- 2019-10-18 CN CN201921753431.XU patent/CN210296096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562991A (en) * | 2020-11-04 | 2021-03-26 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
| CN112562991B (en) * | 2020-11-04 | 2022-03-04 | 广东电网有限责任公司 | Heat radiator for dry-type transformer coil |
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