Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A 220kV Three-dimensional Wound Core Power Transformer and Core Manufacturing Method

A technology of power transformers and three-dimensional wound cores, which is applied in the field of power transformers, can solve the problems that the heat dissipation structure of laminated cores cannot be applied to wound cores, the oil channel buckle cannot withstand the high temperature of annealing, and the toughness of high temperature resistant materials is insufficient, etc., to achieve novel structure, Good heat dissipation effect and optimized heat dissipation performance

Active Publication Date: 2021-08-31
CHANGZHOU TIANDAO TRANSFORMER +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The three-dimensional wound core is usually wound continuously with several strips. Due to the mechanical stress generated by mechanical processing such as strip stretching and winding, the performance of the silicon steel strip is destroyed. Therefore, the wound core must be processed by high temperature annealing process. Stress relief, the commonly used oil duct buckle and related insulating materials cannot withstand the high temperature of annealing, and the high temperature resistant material is usually not tough enough, and the high temperature resistant material is easily broken during winding, so the laminated core heat dissipation structure cannot be applied to the coiled core

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A 220kV Three-dimensional Wound Core Power Transformer and Core Manufacturing Method
  • A 220kV Three-dimensional Wound Core Power Transformer and Core Manufacturing Method
  • A 220kV Three-dimensional Wound Core Power Transformer and Core Manufacturing Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1~6 As shown, a 220kV three-dimensional wound core power transformer includes an oil tank 1 and an iron core assembly arranged in the oil tank 1. The oil tank 1 is filled with transformer oil. The iron core assembly includes three double-frame iron cores arranged in an equilateral triangle, each The vertical frames of the two double-frame iron cores are joined together to form an iron core column, and windings are arranged on the vertical outer periphery of the iron core column.

[0035] This embodiment provides a preferred structure of a double-frame iron core, such as Figure 5 As shown, the double frame iron core includes an inner frame iron core 21 and an outer frame iron core 22 , the included angle between the two inner frame iron cores 21 is 60°, and the included angle between the two outer frame iron cores 22 is 60°.

[0036] Such as Figure 5 As shown, a first oil passage 31 is provided between the inner frame core 21 and the outer frame core ...

Embodiment 2

[0048] A method for manufacturing an iron core of a 220kV three-dimensional wound core power transformer, comprising:

[0049] S1, winding three inner frame iron cores 21 and three outer frame iron cores 22 respectively;

[0050] S2. Perform high-temperature annealing treatment on the wound inner frame iron core 21 and outer frame iron core 22;

[0051] S3. The inner frame iron core 21 and the outer frame iron core 22 after the high temperature annealing treatment are assembled. When merging, the first oil passage 31 is assembled between the inner frame iron core 21 and the outer frame iron core 22, and every two outer frame iron cores 22 The second oil passage 32 is assembled therebetween.

[0052] The iron core assembly of this embodiment is assembled after the inner frame iron core 21 and the outer frame iron core 22 are annealed at high temperature, and put into the oil passage during the assembly, which solves the problem that the heat dissipation oil passage cannot with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a 220kV three-dimensional wound core power transformer and a method for manufacturing an iron core. It includes an oil tank and an iron core assembly arranged in the oil tank. The iron core assembly includes three double-frame iron cores arranged in an equilateral triangle, and each two The vertical frames of the double-frame iron core are joined together to form a core column, and windings are arranged on the vertical outer periphery of the iron core column; the double-frame iron core includes an inner frame iron core and an outer frame iron core, and the inner frame iron core and the outer frame iron core A first oil passage is provided, and a second oil passage is provided between every two assembled inner frame cores, and every two assembled inner frame iron cores are connected with two assembled inner frame iron cores outside the inner frame iron cores. Vertical oil holes are arranged between the iron cores of the outer frame. The invention provides a 220kV three-dimensional wound core power transformer and a manufacturing method for the iron core. The three-dimensional wound core power transformer has low no-load loss, small no-load current, low noise and strong short-circuit resistance.

Description

technical field [0001] The invention relates to a 220kV three-dimensional wound iron core power transformer and an iron core manufacturing method, belonging to the technical field of power transformers. Background technique [0002] At present, power transformers are the most commonly used power equipment. The power industry has higher and higher requirements for power transformers. The country also prohibits transformers that do not meet the energy efficiency standards from being connected to the power grid. At present, the newly purchased transformers in the power industry should be high-efficiency energy-saving transformers. . Traditional laminated core transformers, especially high-voltage and large-capacity power transformers, are usually improved by replacing the core material, that is, using high-performance silicon steel sheets as the core manufacturing material, but the cost of the transformer core material will be greatly increased. [0003] If this type of transf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/25H01F27/29H01F27/04H01F27/14H01F27/22H01F27/30H01F27/32H01F29/04H01F41/02
CPCH01F27/04H01F27/14H01F27/22H01F27/25H01F27/29H01F27/306H01F27/324H01F29/04H01F41/0213
Inventor 高仕斌高旻东万洪新何晓琼林彬彬周利军钱鹏吴志强周佳恽一鑫
Owner CHANGZHOU TIANDAO TRANSFORMER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products