CN211404257U - Environment-friendly flame-retardant dry-type power transformer - Google Patents
Environment-friendly flame-retardant dry-type power transformer Download PDFInfo
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- CN211404257U CN211404257U CN201922493326.3U CN201922493326U CN211404257U CN 211404257 U CN211404257 U CN 211404257U CN 201922493326 U CN201922493326 U CN 201922493326U CN 211404257 U CN211404257 U CN 211404257U
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Abstract
The utility model discloses a fire-retardant dry-type power transformer of environmental protection, including two first iron core folder and two second iron core folder, fixedly connected with iron core is whole between two first iron core folder and two second iron core folder, the iron core is whole to be become by last yoke, lower yoke and three iron core post group, the holistic iron core post outer wall cover of iron core is equipped with the winding structure. The environment-friendly flame-retardant dry-type power transformer has the characteristics of environment friendliness, flame retardance, energy conservation and outstanding low-altitude load loss, the loss performance of the environment-friendly flame-retardant dry-type power transformer meets the energy efficiency level requirement of energy-saving evaluation, the coil structure is optimized and innovated, all insulating materials are made of flame-retardant materials, the product manufacturing process level is improved, the product standardization is improved, the product reliability is enhanced, the energy is saved, the power supply quality is improved, the technical and economic indexes of the product are greatly improved under the action of reducing noise on environment pollution, the structure is optimized, and the design is more reasonable.
Description
Technical Field
The utility model relates to a transformer specifically is a fire-retardant dry-type power transformer of environmental protection.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like. According to the application, the method can be divided into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.). With the continuous deepening of the policy of energy conservation and consumption reduction in China, the nation encourages the development of energy-saving and low-noise distribution transformer products. The dry-type transformer has the characteristics of environmental protection, flame retardance, energy conservation, consumption reduction, low noise and the like, and is the latest environmental-protection flame-retardant energy-saving dry-type transformer at present. The loss performance of the product is completely superior to the energy efficiency level 1 (high quality) level of GB20052-2013 'energy efficiency limit value and energy efficiency level of three-phase distribution transformer', and each technical index is superior to the unified standard of electric power companies in China. In order to meet market demands, the power grid development trend is advanced, the latest design and development are carried out on the SCB 13-630-2500/10-NX 1 (high-quality) environment-friendly flame-retardant dry-type power transformer on the basis of accumulating advanced technologies and processes of mature products, and the product meets the national energy-saving policy and plays an important role in reducing exhaust emission. Meanwhile, the transformer which is reliable, energy-saving and low in noise is continuously innovated and developed, is a continuously perfect process, and is a continuous direction of enterprise development and social progress.
However, the traditional environment-friendly flame-retardant dry-type power transformer on the market is not optimized enough in structure and reasonable in design.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fire-retardant dry-type power transformer of environmental protection to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a fire-retardant dry-type power transformer of environmental protection, includes two first iron core folder and two second iron core folder, and fixedly connected with iron core is whole between two first iron core folder and two second iron core folder, the iron core is whole to be become by last yoke, lower yoke and three iron core post, the holistic iron core post outer wall cover of iron core is equipped with the winding structure, the equal fixed mounting in both sides at winding structure top has first cushion, the equal fixed mounting in both sides of winding structure bottom has the second cushion, the equal fixed mounting in both sides of first iron core folder bottom has the support, the outer wall fixed mounting of second iron core folder has a plurality of binding post.
As a further aspect of the present invention: the winding structure includes the casing, the outer wall integrated into one piece of casing is provided with the bellying, the outer wall fixed mounting of bellying has a plurality of high-voltage tap group, and high-voltage tap group comprises two high-voltage connector, fixedly connected with high-voltage connection piece between two high-voltage connector of high-voltage tap group of the same group, the inside of casing is provided with high-voltage winding and low-voltage winding respectively, high-voltage winding's inner wall is provided with the first insulation layer, low-voltage winding's outer wall is provided with the second insulating layer, a plurality of stays of fixedly connected with between first insulation layer and the second insulating layer.
As a further aspect of the present invention: the whole iron core is made of high-permeability grain-oriented high-quality cold-rolled silicon steel sheet materials.
As a further aspect of the present invention: the outer walls of the first iron core clamping piece and the second iron core clamping piece are provided with special epoxy resin paint, and the first iron core clamping piece and the second iron core clamping piece are of dovetail pulling plate and steel plate bending clamping piece structures.
As a further aspect of the present invention: the high-voltage winding and the low-voltage winding are both of long round structures, the high-voltage winding of the high-voltage winding is of a continuously wound cake-type structure, the low-voltage winding of the high-voltage winding of the low-voltage winding of the high-voltage winding of the.
As a further aspect of the present invention: the supporting strips are I-shaped and are made of aluminum tubes.
As a further aspect of the present invention: all insulating materials on the winding structure are made of flame-retardant materials.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the characteristics of environmental protection is fire-retardant energy-conserving, outstanding low-altitude load loss, its loss performance all satisfies energy-conserving evaluation's efficiency one-level requirement, and to coil structure's optimization innovative design, fire-retardant material is all chooseed for use to all insulating materials, improve product manufacturing process level, improve the standardization of product, make the reliability of product obtain the enhancement, thereby the energy has been practiced thrift, improve the power supply quality, the technical and economic index of the effect product of lightening noise to environmental pollution improves by a wide margin, its structure is more optimized, the design is more reasonable.
Drawings
Fig. 1 is a schematic structural diagram of an environment-friendly flame-retardant dry-type power transformer.
Fig. 2 is a top cross-sectional view of a winding structure in an environmentally friendly flame retardant dry power transformer.
Fig. 3 is an enlarged view of a portion a of the environment-friendly flame-retardant dry type power transformer in fig. 2.
In the figure: the core-winding structure comprises a first core clamp 1, a support 2, a whole core 3, a winding structure 4, a high-voltage tap group 5, a high-voltage connecting sheet 6, a first cushion block 7, a second core clamp 8, a connecting terminal 9, a second cushion block 10, a shell 11, a high-voltage winding 12, a low-voltage winding 13, a first insulating layer 14, a stay 15, a second insulating layer 16 and a protruding portion 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, an environment-friendly flame retardant dry-type power transformer includes two first core clamps 1 and two second core clamps 8, a core assembly 3 is fixedly connected between the two first core clamps 1 and the two second core clamps 8, the core assembly 3 is composed of an upper yoke, a lower yoke and three core legs, a winding structure 4 is sleeved on the outer wall of the core leg of the core assembly 3, first pads 7 are fixedly mounted on both sides of the top of the winding structure 4, second pads 10 are fixedly mounted on both sides of the bottom of the winding structure 4, brackets 2 are fixedly mounted on both sides of the bottom of the first core clamp 1, a plurality of terminals 9 are fixedly mounted on the outer wall of the second core clamp 8, the winding structure 4 includes a housing 11, a boss 17 is integrally formed on the outer wall of the housing 11, a plurality of high voltage tap sets 5 are fixedly mounted on the outer wall of the boss 17, the high-voltage tap group 5 consists of two high-voltage connector lugs, a high-voltage connecting sheet 6 is fixedly connected between the two high-voltage connector lugs of the same high-voltage tap group 5, a high-voltage winding 12 and a low-voltage winding 13 are respectively arranged inside the shell 11, a first insulating layer 14 is arranged on the inner wall of the high-voltage winding 12, a second insulating layer 16 is arranged on the outer wall of the low-voltage winding 13, a plurality of supporting strips 15 are fixedly connected between the first insulating layer 14 and the second insulating layer 16, the iron core whole body 3 is made of high-permeability grain oriented high-quality cold-rolled silicon steel sheet materials, and a forty-five-degree full-oblique seam is used, a seven-level stepping iron core process is adopted, the lamination positioning is rapid and accurate, the no-load loss and the running noise of the transformer can be effectively reduced, special epoxy resin paint is arranged on the outer walls of the, the whole rigidity of the iron core is increased, the no-load loss of the transformer is further reduced, the first iron core clamp 1 and the second iron core clamp 8 both adopt a dovetail pulling plate and steel plate bending clamp structure to clamp and fix the whole iron core 3, the mechanical strength is good, the clamping force is uniformly distributed, the whole iron core is formed into a whole, the high-voltage winding 12 and the low-voltage winding 13 both adopt a long circle structure, the high-voltage winding 12 adopts a continuously wound cake type structure, the potential gradient at the head end of the winding is improved, the electric field distribution is improved, the heat dissipation performance and the short-circuit resistance of the winding are improved, the electric field between the cakes is small, the local arrangement is low, the electrical performance of the transformer is improved, the low-voltage winding 13 adopts a foil winding structure, and the material of the low-, the structure is simple, the winding efficiency is high, the processing cost is low, the short-circuit resistance is high, the coil is formed by adopting a vacuum pressure pouring process, the density of epoxy resin is increased, bubbles are reduced, partial discharge of a transformer is reduced, the stay 15 is small in part, the stay 15 is in an I shape and made of an aluminum pipe, all insulating materials on the winding structure 4 are made of flame-retardant materials, the flame-retardant grade reaches V0, and even if the coil is burnt at an ultrahigh temperature, the coil can be automatically extinguished without supporting combustion after being ignited.
The utility model discloses a theory of operation is:
when the iron core is used, the iron core whole body 3 is made of high-permeability grain-oriented high-quality cold-rolled silicon steel sheet materials, a forty-five-degree full-oblique seam and a seven-level stepping iron core process are used, lamination positioning is rapid and accurate, no-load loss and running noise of the transformer can be effectively reduced, special epoxy resin paint is arranged on the outer walls of the first iron core clamping piece 1 and the second iron core clamping piece 8 and coated on the special epoxy resin paint, the anti-rust purpose is achieved, the integral rigidity of the iron core is improved, the no-load loss of the transformer is further reduced, meanwhile, the first iron core clamping piece 1 and the second iron core clamping piece 8 both adopt a dovetail pull plate and steel plate bending clamping piece structure, the iron core whole body 3 is clamped and fixed by adopting the dovetail pull plate and steel plate bending clamping piece structure, the mechanical strength is good, the clamping force is uniformly distributed, the whole iron core is formed into a whole, therefore, the potential gradient at the head end of the winding is improved, the electric field distribution is improved, the heat dissipation performance and the short-circuit resistance of the winding are improved, the electric field between the cakes is small, the partial voltage is low, and the electrical performance of the transformer is improved, the low-voltage winding 13 adopts a foil winding structure and selects high-quality copper foil, the structure is simple, the winding efficiency is high, the processing cost is low, the short-circuit resistance of the coil is high, all insulating materials on the winding structure 4 are made of flame-retardant materials, the flame-retardant grade reaches V0, meanwhile, the stay 15 is I-shaped, the stay 15 is made of aluminum tubes, even if the coil burns at an ultrahigh temperature, the coil can be self-extinguished without supporting combustion after being ignited, the dry-type power transformer has the characteristics of environmental protection, flame retardance, energy conservation and outstanding low-empty load loss, the loss performance meets the requirement of the first-level energy efficiency and high, all insulating materials are made of flame-retardant materials, so that the manufacturing process level of products is improved, the standardization of the products is improved, and the reliability of the products is enhanced, thereby saving energy, improving the power supply quality, greatly improving the technical and economic indexes of the products, reducing the effect of noise on environmental pollution, optimizing the structure and designing the products more reasonably.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides an fire-retardant dry-type power transformer of environmental protection, includes two first iron core folder (1) and two second iron core folder (8), its characterized in that: fixed connection has whole (3) of iron core between two first iron core folder (1) and two second iron core folder (8), whole (3) of iron core comprises last indisputable yoke, lower indisputable yoke and three iron core post, the iron core post outer wall cover of the whole (3) of iron core is equipped with winding structure (4), the equal fixed mounting in both sides at winding structure (4) top has first cushion (7), the equal fixed mounting in both sides of winding structure (4) bottom has second cushion (10), the equal fixed mounting in both sides of first iron core folder (1) bottom has support (2), the outer wall fixed mounting of second iron core folder (8) has a plurality of binding post (9).
2. The environmental-friendly flame-retardant dry-type power transformer according to claim 1, characterized in that: winding structure (4) are including casing (11), the outer wall integrated into one piece of casing (11) is provided with bellying (17), the outer wall fixed mounting of bellying (17) has a plurality of high-voltage tap group (5), and high-voltage tap group (5) comprise two high-voltage connector, fixedly connected with high-voltage connection piece (6) between two high-voltage connector of high-voltage tap group (5) with organizing, the inside of casing (11) is provided with high-voltage winding (12) and low voltage winding (13) respectively, the inner wall of high-voltage winding (12) is provided with first insulation layer (14), the outer wall of low-voltage winding (13) is provided with second insulation layer (16), a plurality of stays (15) of fixedly connected with between first insulation layer (14) and second insulation layer (16).
3. The environmental-friendly flame-retardant dry-type power transformer according to claim 1, characterized in that: the whole iron core (3) is made of a high-permeability grain-oriented cold-rolled silicon steel sheet material.
4. The environmental-friendly flame-retardant dry-type power transformer according to claim 1, characterized in that: the outer walls of the first iron core clamping piece (1) and the second iron core clamping piece (8) are provided with special epoxy resin paint, and the first iron core clamping piece (1) and the second iron core clamping piece (8) are of dovetail pulling plate and steel plate bending clamping piece structures.
5. The environmental-friendly flame-retardant dry-type power transformer according to claim 2, characterized in that: the high-voltage winding (12) and the low-voltage winding (13) are both of long round structures, the high-voltage winding (12) is of a cake-type structure which is wound continuously, the low-voltage winding (13) is of a foil winding structure, and the low-voltage winding (13) is made of copper foil.
6. The environmental-friendly flame-retardant dry-type power transformer according to claim 2, characterized in that: the stay (15) is I-shaped, and the stay (15) is made of an aluminum pipe.
7. The environmental-friendly flame-retardant dry-type power transformer according to claim 1, characterized in that: all insulating materials on the winding structure (4) are made of flame-retardant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922493326.3U CN211404257U (en) | 2019-12-31 | 2019-12-31 | Environment-friendly flame-retardant dry-type power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922493326.3U CN211404257U (en) | 2019-12-31 | 2019-12-31 | Environment-friendly flame-retardant dry-type power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211404257U true CN211404257U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922493326.3U Active CN211404257U (en) | 2019-12-31 | 2019-12-31 | Environment-friendly flame-retardant dry-type power transformer |
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| Country | Link |
|---|---|
| CN (1) | CN211404257U (en) |
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- 2019-12-31 CN CN201922493326.3U patent/CN211404257U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20230613 Address after: No. 155, fu MA, Mazhong village, an Dong Town, Hangzhou Bay New Area, Ningbo 315000, Zhejiang Province Patentee after: Zhejiang Rendong Electrical Technology Co.,Ltd. Address before: No.155 Fuma, Mazhong village, Andong Town, Hangzhou Bay New District, Ningbo City, Zhejiang Province Patentee before: NINGBO RENDONG ELECTRIC Co.,Ltd. |