CN114758869A - Parallel reactor iron yoke, manufacturing method and reactor - Google Patents
Parallel reactor iron yoke, manufacturing method and reactor Download PDFInfo
- Publication number
- CN114758869A CN114758869A CN202210295922.4A CN202210295922A CN114758869A CN 114758869 A CN114758869 A CN 114758869A CN 202210295922 A CN202210295922 A CN 202210295922A CN 114758869 A CN114758869 A CN 114758869A
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- CN
- China
- Prior art keywords
- iron yoke
- epoxy
- fan
- insulating
- reactor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01F27/24—Magnetic cores
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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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention provides a parallel reactor iron yoke, a manufacturing method and a reactor, wherein the parallel reactor iron yoke comprises: the fan-shaped iron yoke lamination, the epoxy insulation plate and the epoxy insulation tube; the three epoxy insulation plates are used for insulating and dividing the three fan-shaped iron yoke laminations to form a circular ring, and the epoxy insulation tubes are integrally supported in the hollow part of the circular ring. And integrally casting and molding the fan-shaped iron yoke lamination, the epoxy insulating plate and the epoxy insulating pipe by using a vacuum epoxy casting process to generate an epoxy casting layer. The scheme provided by the invention has the advantages of reasonable and simple structure, convenience in manufacturing and installation and good mechanical strength, and solves the problem that when the three-phase parallel reactor arranged in a shape like a Chinese character 'pin' runs in three-phase unbalanced mode, zero-sequence magnetic flux induced potential causes iron yoke faults.
Description
Technical Field
The invention belongs to the technical field of reactors, and particularly relates to a parallel reactor iron yoke, a manufacturing method and a reactor.
Background
For a three-phase parallel reactor arranged in a shape like a Chinese character 'pin', an iron yoke is generally coiled by an electrical steel belt, the electrical steel belt is very thin, the whole iron yoke coiled by the electrical steel belt is equivalent to an inductance coil with thousands of turns, zero-sequence magnetic flux passes through the iron yoke under the operating condition of three-phase unbalance, and large induced potential can be generated among sheets of the iron yoke, so that the product is damaged. Therefore, it is an urgent problem to improve the reliability of the operation of the parallel reactor by eliminating the induced potential between the pieces of the iron yoke by technical means.
Disclosure of Invention
In order to solve the technical problems, the invention provides an iron yoke of a parallel reactor, a manufacturing method and a technical scheme of the reactor, so as to solve the technical problems.
The first aspect of the present invention discloses a shunt reactor iron yoke, comprising: the fan-shaped iron yoke lamination, the first insulating material and the second insulating material; the first insulating material is used for insulating and dividing the three fan-shaped iron yoke laminations to form a circular ring, and the second insulating material is used for integrally supporting the hollow part of the circular ring.
In some embodiments, the first insulating material is three epoxy insulating boards.
In some embodiments, the first insulating material is an epoxy insulating tube.
In some embodiments, the fan-shaped yoke laminations, epoxy insulation plates, and epoxy insulation tubes are integrally cast using a vacuum epoxy casting process to produce an epoxy cast layer.
The second aspect of the invention discloses a method for manufacturing a parallel reactor iron yoke, which comprises the following steps:
the method is characterized in that an iron yoke which is usually rolled by an electrical steel strip is manufactured by changing three fan-shaped iron yoke laminations into blocks, wherein the three fan-shaped iron yoke laminations are insulated and divided by using a first insulating material, the three fan-shaped iron yoke laminations form a circular ring, and a second insulating material is added into the hollow part of the circular ring to be integrally supported.
In some embodiments, the first insulating material is three epoxy insulating boards.
In some embodiments, the first insulating material is an epoxy insulating tube.
In some embodiments, the fan-shaped iron yoke laminations, epoxy insulation plates, and epoxy insulation tubes are integrally cast using a vacuum epoxy casting process to produce an epoxy cast layer.
In some embodiments, each of the fan-shaped yoke laminations is formed by a radial stack of incrementally sheared rectangular electrical steel strips.
A third aspect of the invention discloses a reactor including the parallel reactor iron yoke according to any one of the first aspects.
Therefore, the scheme provided by the invention has the advantages of reasonable and simple structure, convenience in manufacturing and installation and good mechanical strength, and solves the problem that when the three-phase parallel reactor arranged in a delta shape operates in an unbalanced three-phase mode, the zero-sequence magnetic flux induced potential causes iron yoke faults.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Figure 1 is a front view of a schematic diagram of a shunt reactor iron yoke according to an embodiment of the invention;
figure 2 is a bottom view of a schematic diagram of a parallel reactor iron yoke according to an embodiment of the present invention;
in the figure, 1 is a fan-shaped iron yoke lamination, 2 is an epoxy insulation plate, 3 is an epoxy insulation pipe, and 4 is an epoxy pouring layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. 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.
Example (b):
the first aspect of the present invention discloses a parallel reactor iron yoke, as specifically shown in fig. 1 and 2, including:
the method comprises the following steps: the device comprises a fan-shaped iron yoke lamination 1, an epoxy insulation plate 2 and an epoxy insulation pipe 3; the three epoxy insulation plates 2 are used for insulating and dividing the three fan-shaped iron yoke laminations 1, the three fan-shaped iron yoke laminations 1 form a circular ring, and the epoxy insulation tube 3 is integrally supported in the hollow part of the circular ring. And integrally pouring and molding the fan-shaped iron yoke lamination 1, the epoxy insulating plate 2 and the epoxy insulating pipe 3 by using a vacuum epoxy pouring process to generate an epoxy pouring layer 4.
The second aspect of the present invention discloses a method for manufacturing a parallel reactor iron yoke, as shown in fig. 1, including:
the method is characterized in that an iron yoke which is usually coiled by an electrical steel strip is manufactured by three fan-shaped iron yoke laminations 1 in a blocking mode, three epoxy insulation plates 2 are used among the three fan-shaped iron yoke laminations 1 for insulation and division, the three fan-shaped iron yoke laminations 1 form a circular ring, and an epoxy insulation tube 3 is added in the hollow part of the circular ring for integral support. And integrally casting and forming the fan-shaped iron yoke lamination 1, the epoxy insulating plate 2 and the epoxy insulating pipe 3 by using a vacuum epoxy casting process to generate an epoxy casting layer 4.
In some embodiments, each of the fan-shaped yoke laminations 1 is formed by a radial stack of stepped-shear rectangular electrical steel strips.
A third aspect of the invention discloses a reactor including the parallel reactor iron yoke according to any one of the first aspects.
In summary, the technical solutions of the aspects of the present invention have the following advantages compared with the prior art:
the invention provides an iron yoke of a parallel reactor, which has the advantages of reasonable and simple structure, convenient manufacture and installation and good mechanical strength, and solves the problem of iron yoke failure caused by zero-sequence flux induced potential when a three-phase parallel reactor arranged in a delta shape operates in three-phase unbalanced mode.
It should be noted that the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered. The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A shunt reactor iron yoke, comprising: the fan-shaped iron yoke lamination, the first insulating material and the second insulating material; the first insulating material is used for insulating and dividing the three fan-shaped iron yoke laminations to form a circular ring, and the second insulating material is used for integrally supporting the hollow part of the circular ring.
2. The shunt reactor iron yoke of claim 1, wherein the first insulating material is three epoxy insulator plates.
3. The shunt reactor iron yoke of claim 2, wherein the first insulating material is an epoxy insulating tube.
4. The parallel reactor iron yoke according to claim 3, wherein the fan-shaped iron yoke lamination, the epoxy insulating plate and the epoxy insulating tube are integrally cast using a vacuum epoxy casting process to produce an epoxy casting layer.
5. A method for manufacturing an iron yoke of a shunt reactor is characterized by comprising the following steps:
the method comprises the steps that an iron yoke coiled by an electrical steel strip is changed into three fan-shaped iron yoke laminations for manufacturing in a blocking mode, first insulating materials are used for insulating and dividing the three fan-shaped iron yoke laminations, the three fan-shaped iron yoke laminations form a circular ring, and second insulating materials are added into the hollow portion of the circular ring to integrally support the circular ring.
6. The method according to claim 5, wherein the first insulating material is three epoxy insulating plates.
7. The method according to claim 6, wherein the first insulating material is an epoxy insulating tube.
8. The method for manufacturing the parallel reactor iron yoke according to claim 7, wherein the fan-shaped iron yoke lamination, the epoxy insulation plate and the epoxy insulation tube are integrally cast and formed by using a vacuum epoxy casting process to generate an epoxy casting layer.
9. The method for manufacturing parallel reactor yokes according to claim 8, wherein each of the fan-shaped yoke laminations is formed by stacking rectangular electrical steel strips which are cut step by step in a radial direction.
10. A reactor characterized by comprising the parallel reactor iron yoke according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210295922.4A CN114758869A (en) | 2022-03-23 | 2022-03-23 | Parallel reactor iron yoke, manufacturing method and reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210295922.4A CN114758869A (en) | 2022-03-23 | 2022-03-23 | Parallel reactor iron yoke, manufacturing method and reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114758869A true CN114758869A (en) | 2022-07-15 |
Family
ID=82327434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210295922.4A Pending CN114758869A (en) | 2022-03-23 | 2022-03-23 | Parallel reactor iron yoke, manufacturing method and reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114758869A (en) |
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2022
- 2022-03-23 CN CN202210295922.4A patent/CN114758869A/en active Pending
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