CN213211873U - Pouring dry type transformer - Google Patents

Abstract

The utility model discloses a pouring dry-type transformer, including a plurality of coil, iron core, folder and lead wire, the lead wire is drawn forth by the coil, and the coil sets up on the iron core, and coil and iron core are together fixed through the folder on both sides, and the coil is provided with casting mold, and casting mold is provided with evenly distributed's passageway, pours into the transformer with the ware body in putting into the pouring jar, and the pouring material permeates the coil inside easily through reserving the passageway. This kind of novel pouring dry-type transformer reduces combustible substance, through using insulating casting mold, has solved the problem of casting mold installation consuming time problem, casting mold gas tightness problem, pouring material permeability, very big improvement the production efficiency of transformer, and this patent transformer manufacturing cost is lower, weight is lighter, the overload capacity is stronger, easily more maintain.

Description

Pouring dry type transformer

Technical Field

The utility model relates to a three-dimensional iron core transformer of rolling up, especially a pouring dry-type transformer.

Background

With the development of the transformer industry, the competition is increased, and various production enterprises pay more and more attention to improving the production efficiency of products so as to reduce the production cost, and meanwhile, the products are continuously improved so as to improve the performances of various aspects of transformer products so as to improve the market competitiveness of the products.

The cast dry type transformer is widely applied to various indoor buildings due to the advantages of easy maintenance, excellent electrical performance and the like, but a lot of problems are also exposed.

The production process of the traditional casting dry-type transformer is also complex, the main difficulty lies in the casting process, according to the traditional process, a casting mold needs to be installed before casting, then casting materials are poured into the mold for forming, but the casting mold is often complex in structure and time-consuming to install, the casting channel of the mold is narrow, the situation that the casting materials leak and some parts are not completely cast often occurs in the casting process, the coil needs to be repaired, and after the casting is completed, the mold needs to be dismantled and the transformer is assembled, the cast coil is easy to damage, reworking occurs sometimes, and the production efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the application provides a casting dry-type transformer, the novel casting dry-type transformer reduces combustible substances, the problems that casting materials crack and the transformer is difficult to maintain are solved, and a novel process implementation method is creatively provided.

The utility model provides a technical scheme that its problem adopted is:

on the one hand, the embodiment of the utility model provides a pouring dry-type transformer, a serial communication port, include: the coil is provided with a pouring mold used for pouring the coil, uniformly distributed channels are arranged in the pouring mold, and the coil is poured with a pouring material made of an insulating material, wherein the pouring mold is made of the insulating material, and the coil are combined into an integrated structure without being disassembled after pouring.

The cast dry-type transformer at least has the following beneficial effects: casting mold is provided with evenly distributed's passageway, the coil pouring has insulating material, can discharge unnecessary casting material from casting mold, the pouring thickness has been reduced, when having improved the coil dampproofing, corrosion resisting property, and the material has been practiced thrift, the cost is reduced, make the combustible substance weight ratio tradition pouring transformer of transformer reduce a lot, the security and the reliability of transformer have been improved, simultaneously again because casting material is thinner, the pouring passageway also is the heat dissipation air flue of coil, heat radiating area is big, consequently, the heat-sinking capability and the overload capacity of transformer have still been improved, make insulating material can not split because of the abrupt change of temperature, insulating material curing time has been shortened, production efficiency is improved. In addition, the casting mold can be dismantled, and when the coil goes wrong and needs to be handled, only need open the casting mold, wrap the coil and repair, the repacking casting mold pour again can for the transformer is maintained more easily.

Further, the iron core adopts three-dimensional book iron core structure, the iron core includes three single frame, every two the single frame is 60 contained angles amalgamation together, every two single frame concatenation department forms a heart post.

Furthermore, each single frame is formed by winding a plurality of silicon steel sheets or amorphous alloy strips.

Further, the coil still includes interior coil and outer coil, interior coil is around locating the stem with between the outer coil, the lead wire includes interior coil lead wire and outer coil lead wire.

Further, the casting mold comprises a casting inner mold and a casting outer mold, the casting inner mold is arranged on the inner side of the outer coil, and the casting outer mold is arranged on the outer side of the outer coil.

Further, the pouring internal mold and the pouring external mold are both made of insulating materials, the pouring internal mold is of a cylinder structure, and the pouring external mold is of a combined structure of a cylinder and an end ring.

Further, the outer coil includes comb-shaped stay, wire, the comb-shaped stay sets up on the pouring centre form, the wire coiling in on the comb-shaped stay.

Furthermore, the comb-shaped stay comprises a plurality of strips with uniform intervals, and the wires are wound between the strips.

Further, the leads include a first lead and a second lead, the first lead being drawn from the inner coil and the second lead being drawn from the outer coil.

The air tightness problem of the casting mold does not need to be considered due to different casting modes, the mold is simple and easy to install, and after casting is completed, the casting mold can be directly used as an insulating part of a transformer and does not need to be disassembled, so that the production efficiency of products is improved; the redundant pouring materials are discharged from the pouring mold, the pouring thickness is reduced, the materials are saved while the moisture-proof and corrosion-resistant performance of the coil is improved, the cost is reduced, the combustible weight of the transformer is greatly reduced compared with that of the traditional pouring transformer, the safety and the reliability of the transformer are improved, meanwhile, as the pouring materials are thinner, the pouring channel is also a heat dissipation air passage of the coil, and the heat dissipation area is large, the heat dissipation capacity and the overload capacity of the transformer are also improved, the insulating materials cannot crack due to sudden temperature change, the curing time of the insulating materials is shortened, and the production efficiency is improved; in addition, during pouring, pouring materials subjected to degassing treatment are poured into the pouring tank, and then the pouring materials are poured into the coil through a channel reserved in the pouring mold by means of vacuum and pressure, so that the pouring materials are easy to permeate into the coil, the problem of incomplete pouring of the coil is solved, the pouring outer mold can be detached, when the coil is in a problem and needs to be treated, the pouring mold is only required to be opened, the coil is wrapped and repaired, the pouring mold is assembled, pouring is carried out again, and the transformer is easy to maintain.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The following description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a cast dry transformer according to an embodiment of the present invention;

fig. 2 is a schematic view of an iron core according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a coil in an embodiment of the invention;

fig. 4 is a cross-sectional view of a coil in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of a comb stay according to an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 4, an embodiment of the present invention provides a cast dry-type transformer, which includes: the coil comprises a plurality of coils 100, an iron core 110, clamping pieces 120 and leads 130, wherein the leads 130 are led out of the coils 100, the coils 100 are arranged on the iron core 110, the coils 100 are provided with casting molds used for casting the coils 100, uniformly distributed channels 101 are arranged in the casting molds, the coils 100 are cast with casting materials made of insulating materials, the casting molds are made of the insulating materials, and the casting molds and the coils 100 are combined into an integrated structure without being disassembled after casting.

The cast dry-type transformer at least has the following beneficial effects: the utility model discloses casting mold is provided with evenly distributed's passageway 101, coil 100 pouring has insulating material, can discharge unnecessary casting material from casting mold, pouring thickness has been reduced, coil 100 is dampproofing having been improved, when corrosion resisting property, the material is practiced thrift, the cost is reduced, make the combustible substance weight ratio tradition pouring transformer of transformer reduce a lot, the security and the reliability of transformer have been improved, simultaneously again because casting material is thinner, pouring passageway 101 is also coil 100's heat dissipation air flue, heat radiating area is big, consequently, the heat-sinking capability and the overload capacity of transformer have still been improved, make insulating material can not split because of the temperature shock, insulating material curing time has been shortened, production efficiency is improved. In addition, the casting mold can be dismantled, and when coil 100 goes wrong and needs to be handled, only need open the casting mold, wrap up the repair to coil 100, the repacking casting mold pour again can for the transformer is maintained more easily.

Referring to fig. 2 again, in the embodiment of the present invention, the iron core 110 adopts a three-dimensional rolled iron core structure, the iron core 110 includes three single frame 111, every two single frames 111 are 60 included angles and are spliced together, every two single frames 111 splice form a core column 112, and every single frame 111 is formed by a plurality of silicon steel sheets or amorphous alloy strips. The three-dimensional wound core transformer is an energy-saving power transformer, creatively reforms the laminated magnetic circuit structure and the three-phase layout of the traditional power transformer, so that the performance of the product is more optimized, for example, the three-phase magnetic circuit is completely symmetrical, the electricity-saving effect of the oil-immersed three-dimensional wound core transformer is remarkable, the noise is greatly reduced, the heat dissipation and overload capacity is stronger, the structure is compact, the size is small, and the like.

In the embodiment of the present invention, referring to fig. 3, the coil 100 further includes an inner coil 102 and an outer coil 103, and the inner coil 102 is wound between the stem 112 and the outer coil 103.

In the embodiment of the present invention, referring to fig. 4, the casting mold includes a casting inner mold 141 and a casting outer mold 142, the casting inner mold 141 is disposed inside the outer coil 103, the casting outer mold 142 is disposed outside the outer coil 103, and the casting material is injected into the casting mold, so that the casting material permeates into the coil 100.

The embodiment of the utility model provides an in, pouring centre form 141 and pouring external mold 142 are made by insulating material, and pouring centre form 141 is the drum structure, and pouring external mold 142 is the integrated configuration of drum and end circle, can directly be used as transformer insulating part after the pouring is accomplished, avoid demolising, have improved production efficiency.

In the embodiment of the present invention, referring to fig. 4 and 5, the outer coil 103 includes a comb-shaped stay 104 and a wire 105, the comb-shaped stay 104 is disposed on the casting inner mold 141, and the wire 105 is wound on the comb-shaped stay 104.

In the embodiment of the present invention, referring to fig. 5, comb-shaped stay 104 includes a plurality of strips 1041 with evenly distributed intervals, and wire 105 is wound in the gap between strips 1041 to form a gap between coils 100 to improve heat dissipation performance of coils 100 and to make the casting material easily pour into and discharge coils 100.

In the embodiment of the present invention, the lead wire 130 includes an inner coil lead wire and an outer coil lead wire, the inner coil lead wire is drawn by the inner coil 102, and the outer coil lead wire is drawn by the outer coil 103.

The air tightness problem of the casting mold does not need to be considered due to different casting modes, the mold is simple and easy to install, and after casting is completed, the casting mold can be directly used as an insulating part of a transformer and does not need to be disassembled, so that the production efficiency of products is improved; the redundant pouring materials are discharged from the pouring mold, the pouring thickness is reduced, the moisture-proof and corrosion-resistant performance of the coil 100 is improved, the materials are saved, the cost is reduced, the combustible weight of the transformer is greatly reduced compared with that of a traditional pouring transformer, the safety and the reliability of the transformer are improved, meanwhile, as the pouring materials are thin, the pouring channel 101 is also a heat dissipation air channel of the coil 100, the heat dissipation area is large, the heat dissipation capacity and the overload capacity of the transformer are also improved, the insulating materials cannot crack due to sudden temperature change, the curing time of the insulating materials is shortened, and the production efficiency is improved; in addition, during pouring, the pouring material that will carry out degasification treatment pours into the casting jar in, and inside the pouring material permeated coil 100 easily through the reservation passageway, solved coil 100 incomplete problem of pouring to the pouring external mold can be dismantled, when the coil goes wrong and needs to be handled, only need open the casting die, wrap up the coil and repair, the repacking casting die pour into a mould again can, make the transformer maintain more easily.

While the preferred embodiment and basic principles of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is intended to cover various modifications, equivalents and alternatives falling within the scope of the invention as claimed.

Claims (7)

1. A cast dry transformer, comprising: the coil comprises a plurality of coils, an iron core, clamping pieces and a lead wire, wherein the lead wire is led out from the coils, the coils are arranged on the iron core, the coils and the iron core are fixed together through the clamping pieces on two sides, the coils are provided with casting molds for casting the coils, uniformly distributed channels are arranged in the casting molds, the coils are cast with casting materials, the casting molds are made of insulating materials, and the coils are combined into an integrated structure without being disassembled after casting is completed.

2. A cast dry transformer according to claim 1, wherein: the iron core adopts three-dimensional book iron core structure, the iron core includes three single frame, per two the single frame is 60 contained angles amalgamation together, per two single frame concatenation department forms a heart post.

3. A cast dry transformer according to claim 2, wherein: the coil still includes interior coil and outer coil, interior coil is around locating the stem with between the outer coil, casting mold is including pouring centre form and pouring external mold, the setting of pouring centre form is in the inboard of outer coil, the setting of pouring external mold is in the outside of outer coil, the lead wire includes interior coil lead wire and outer coil lead wire.

4. A cast dry transformer according to claim 3, wherein: the pouring internal mold and the pouring external mold are both made of insulating materials, the pouring internal mold is of a cylindrical structure, and the pouring external mold is of a combined structure of a cylinder and an end ring.

5. A cast dry transformer according to claim 3, wherein: the outer coil comprises comb-shaped supporting strips and a wire, the comb-shaped supporting strips are arranged on the casting inner die, and the wire is wound on the comb-shaped supporting strips.

6. A cast dry transformer according to claim 5, wherein: the comb-shaped stay comprises a plurality of strips with uniform intervals, and the wires are wound between the strips.

7. A cast dry transformer according to claim 2, wherein: each single frame is formed by winding a plurality of silicon steel sheets or amorphous alloy strips.

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