CN108666108B - Dry type iron core reactor - Google Patents
Dry type iron core reactor Download PDFInfo
- Publication number
- CN108666108B CN108666108B CN201810663018.8A CN201810663018A CN108666108B CN 108666108 B CN108666108 B CN 108666108B CN 201810663018 A CN201810663018 A CN 201810663018A CN 108666108 B CN108666108 B CN 108666108B
- Authority
- CN
- China
- Prior art keywords
- iron core
- iron
- core column
- yoke
- iron yoke
- Prior art date
- 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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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 246
- 229910052742 iron Inorganic materials 0.000 claims abstract description 71
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 230000016507 interphase Effects 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 6
- 238000004080 punching Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- 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
- H01F27/263—Fastening parts of the core together
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
The invention relates to a dry-type iron core reactor, which comprises an iron core column and coils wound on the periphery of the iron core column, wherein an upper iron yoke and a lower iron yoke are correspondingly arranged at the upper end and the lower end of the iron core column, and at least one of the upper end and the lower end of the iron core column is fixedly connected with the corresponding iron yoke through a fixed connection structure. Compared with the prior art, at least one of the upper end and the lower end of the iron core column is fixedly connected with the corresponding iron yoke through the fixing plate and the penetrating fastener, so that the iron core column and the corresponding iron yoke are prevented from rotating relatively, the short circuit bearing capacity of the dry iron core reactor is improved, and the noise is reduced.
Description
Technical Field
The present invention relates to a dry-type iron core reactor.
Background
The reactor is important power equipment and plays roles in limiting switching on inrush current, limiting short-circuit current, filtering, smoothing, lightning protection, wave blocking and the like in a power system. The series reactor has wide application in a power system, and the dry iron core reactor is one of the series reactors. For example, chinese patent with grant publication number CN203503428U and grant publication date 2014.03.26 discloses an epoxy cast dry iron core reactor with rectangular iron core, which includes upper and lower yokes, an iron core column and a coil wound around the outer periphery of the iron core column, the upper and lower yokes being clamped on the iron core column by tie rods. The upper iron yoke and the lower iron yoke are connected with the iron core column through the clamping force of the pull rod, but the clamping force of the pull rod can only limit the upper iron yoke and the lower iron yoke to move along the direction perpendicular to the connecting end face, the friction force generated by the clamping force on the connecting end face of the upper iron yoke and the lower iron yoke and the iron core column is insufficient, the upper iron yoke and the lower iron yoke are easy to rotate relative to the iron core column in the assembly process, and the upper iron yoke and the lower iron yoke cannot be aligned with the iron core column, so that the problems of weak short circuit bearing capacity and high running noise of the dry iron core reactor are caused.
Disclosure of Invention
The invention aims to provide a dry iron core reactor, which solves the problems that in the prior art, an upper iron yoke, a lower iron yoke and an iron core column are easy to generate relative rotation in the assembly process of the dry iron core reactor, so that the dry iron core reactor has weak short circuit bearing capacity and high operation noise.
In order to achieve the above purpose, the dry iron core reactor of the present invention has the technical scheme that:
the dry-type iron core reactor comprises an iron core column and a coil wound on the periphery of the iron core column, wherein an upper iron yoke and a lower iron yoke are correspondingly arranged at the upper end and the lower end of the iron core column, and at least one of the upper end and the lower end of the iron core column is fixedly connected with the corresponding iron yoke through a fixed connection structure.
The fixed connection structure comprises a fixed plate which fixedly connects the upper end of the iron core column with the upper iron yoke. The fixed plate structure is simple, is convenient for connect.
The upper end of the iron core column is provided with a core column hole, the upper iron yoke is provided with an iron yoke hole, the fixing plate is provided with a fixing hole corresponding to the core column hole and the iron yoke hole, and the fixing connection structure further comprises a fastener which is matched with the fixing hole to fixedly connect the upper end of the iron core column with the upper iron yoke. The iron core column is fixedly connected with the upper iron yoke through the fastener, so that the iron core column is convenient to fix, and can be detached for later maintenance and repair.
The three-phase iron core column of the defined reactor is arranged in the front-back direction, the fixing plates are arranged in pairs and are respectively positioned at the left side and the right side of the iron core column, the core column holes are core column perforation holes, the iron yoke holes are iron yoke perforation holes, fixing holes corresponding to the core column perforation holes and the iron yoke perforation holes are formed in the two fixing plates, and the fixing connection structure further comprises a penetrating fastener matched with the fixing holes to fixedly connect the upper end of the iron core column with the upper iron yoke. Through the cooperation of the penetrating fastener and the fixed plate, the iron core column and the upper iron yoke can not rotate relatively, the short circuit bearing capacity is improved, and the noise is reduced.
A core column base plate is arranged between the core column and the fixed plate, and an iron yoke base plate is arranged between the upper iron yoke and the fixed plate. The backing plate can guarantee the balanced atress of iron core post and last yoke.
The upper end and the lower end of the iron core column are fixedly connected with the corresponding upper iron yoke and lower iron yoke through a fixed connection structure, and a polyester belt for wrapping the fixed connection structure is arranged at the fixed connection position. The polyester belt can shrink under heating, so that the firmness of the fixing structure is ensured.
The iron core column is formed by stacking a plurality of iron core cakes, and at least one of the uppermost iron core cake and the lowermost iron core cake of the iron core column is fixedly connected with the corresponding iron yoke through a fixed connection structure.
The beneficial effects of the invention are as follows: compared with the prior art, at least one of the upper end and the lower end of the iron core column is fixedly connected with the corresponding iron yoke through the fixed connection structure, so that the iron core column and the corresponding iron yoke are prevented from rotating relatively, the short circuit bearing capacity of the dry type iron core reactor is improved, and noise is reduced.
Drawings
Fig. 1 is a front view of a dry-type iron core reactor of the present invention;
fig. 2 is a plan view of a dry iron core reactor of the present invention;
fig. 3 is a left side view of the dry iron core reactor of the present invention;
fig. 4 is a partial schematic structure of fig. 3.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 4, the dry-type iron core reactor according to the embodiment of the present invention includes an iron core limb and a coil 11 wound around the outer circumference of the iron core limb, the iron core limb includes a core limb and an iron core cake, and the outer side of the iron core cake is bound with a polyester tape 10 to ensure stability of the iron core cake during casting. The uppermost core cake 1 of the core limb is connected with an upper yoke 3 through a fixed connection structure, and the lowermost core cake is connected with a lower yoke 14 through a fixed connection structure, so that the core limb and the corresponding yoke cannot rotate relatively. Compared with the prior art, the upper end and the lower end of the iron core column are fixedly connected with the corresponding iron yoke through the fixed connection structure, so that the iron core column and the corresponding iron yoke are prevented from rotating relatively, the short circuit bearing capacity of the dry type iron core reactor is improved, and the noise is reduced. In other embodiments, the core limb is fixedly connected with the corresponding yoke through a fixed connection structure only at one end, and the uppermost core cake of the core limb is connected with the upper yoke through the fixed connection structure, or the lowermost core cake is connected with the lower yoke through the fixed connection structure.
As shown in fig. 3 and 4, in this embodiment, taking the fixed connection of the uppermost iron core cake 1 and the upper iron yoke 3 as an example, the uppermost iron core cake 1 is provided with a core column perforation, the upper iron yoke 3 is provided with an iron yoke perforation, the arrangement direction of the three-phase iron core column of the reactor is defined as the front-back direction, the fixed connection structure comprises fixing plates 9 arranged in pairs, two fixing plates 9 are respectively positioned at the left and right sides of the iron core column, fixing holes corresponding to the core column perforation and the iron yoke perforation are arranged on the fixing plates 9, the fixed connection structure further comprises a through screw 8 which is matched with the fixing holes to fixedly connect the uppermost iron core cake 1 with the upper iron yoke 3, the through screw 8 forms a through fastener, and the through screw can be fastened at two ends, thereby improving the fixing firmness. Through the cooperation of the penetrating screw rod and the fixed plate, the uppermost iron core cake and the upper iron yoke cannot rotate relatively, the short circuit bearing capacity is improved, and the noise is reduced. In other embodiments, the fixed connection structure is a hoop structure for connecting the uppermost iron core cake and the upper iron yoke, concave parts are arranged on the uppermost iron core cake and the upper iron yoke, and protrusions matched with the concave parts are arranged on the inner side of the hoop structure so as to ensure that the uppermost iron core cake and the upper iron yoke cannot rotate relatively; or be equipped with the stem blind hole on the upper end iron core cake 1, be equipped with the yoke blind hole on the upper yoke 3, fixed connection structure is the fixed plate, is equipped with the fixed orifices that corresponds with stem blind hole and yoke blind hole on the fixed plate, and fixed connection structure still includes the bolt with fixed orifices cooperation with upper end iron core cake and upper yoke fixed connection. In this embodiment, a core column pad 2 is disposed between the uppermost core cake 1 and the fixing plate 9, and a yoke pad 4 is disposed between the upper yoke 3 and the fixing plate 9. The backing plate can guarantee that the stress of the uppermost iron core cake and the upper iron yoke is balanced when the punching screw rod is in fastening connection, and the uppermost iron core cake and the upper iron yoke are prevented from being damaged. In other embodiments, no core leg shim plate is provided between the uppermost core cake and the fixed plate, and no yoke shim plate is provided between the upper yoke and the fixed plate. In other embodiments, both ends of the fixing plate are directly welded to the uppermost core cake and the upper yoke to achieve a fixed connection of the uppermost core cake and the upper yoke.
In this embodiment, in order to avoid the nut on the through bolt becoming flexible, the through screw department is equipped with the polyester area 10 that is used for wrapping up through screw and nut, and the polyester area can be heated shrink, guarantees fixed connection structure's firm nature. As shown in fig. 1 and 2, in order to ensure stability of the dry-type iron core reactor, in this embodiment, the dry-type iron core reactor further includes a interphase pulling screw 15 and a punching pulling screw 12 for fastening the iron core column and the upper and lower iron yokes together, a cushion block 7 is disposed at an upper end of the coil 11, an upper clamping piece 5 is disposed at an upper end of the cushion block 7, a press nail 6 is disposed on the upper clamping piece 5, a cushion block 7 is disposed at a lower end of the coil 11, a lower clamping piece 13 is disposed at a lower end of the cushion block 7, the interphase pulling screw 15 and the punching pulling screw 12 are all installed on the upper clamping piece 5 and the lower clamping piece 13, and fastening of the iron core column and the upper iron yoke 3 with the lower iron yoke 14 is achieved by fastening nuts on the interphase pulling screw 15 and the punching pulling screw 12.
Claims (4)
1. The dry-type iron core reactor comprises an iron core column and a coil wound on the periphery of the iron core column, wherein an upper iron yoke and a lower iron yoke are correspondingly arranged at the upper end and the lower end of the iron core column, and the dry-type iron core reactor is characterized in that: at least one of the upper end and the lower end of the iron core column is fixedly connected with the corresponding iron yoke through a fixed connection structure;
the fixed connection structure comprises a fixed plate which fixedly connects the upper end of the iron core column with the upper iron yoke;
the upper end of the iron core column is provided with a core column perforation, the upper iron yoke is provided with an iron yoke perforation, the arrangement direction of the three-phase iron core column of the reactor is defined to be the front-back direction, the fixing plates are arranged in pairs and are respectively positioned at the left side and the right side of the iron core column, the two fixing plates are respectively provided with fixing holes corresponding to the core column perforation and the iron yoke perforation, and the fixed connection structure further comprises a penetrating fastener matched with the fixing holes to fixedly connect the upper end of the iron core column with the upper iron yoke;
the dry-type iron core reactor further comprises an inter-phase pull screw rod and a core penetrating pull screw rod, wherein the inter-phase pull screw rod and the core penetrating pull screw rod are used for fastening the iron core column, the upper iron yoke and the lower iron yoke together, a cushion block is arranged at the upper end of the coil, an upper clamping piece is arranged at the upper end of the cushion block, a cushion block is arranged at the lower end of the coil, a lower clamping piece is arranged at the lower end of the cushion block, the inter-phase pull screw rod and the core penetrating pull screw rod are respectively arranged on the upper clamping piece and the lower clamping piece in a penetrating mode, and the iron core column, the upper iron yoke and the lower iron yoke are fastened and connected through nuts on the inter-phase pull screw rod and the core penetrating pull screw rod.
2. The dry iron core reactor according to claim 1, characterized in that: a core column base plate is arranged between the core column and the fixed plate, and an iron yoke base plate is arranged between the upper iron yoke and the fixed plate.
3. The dry iron core reactor according to claim 1, characterized in that: the upper end and the lower end of the iron core column are fixedly connected with the corresponding upper iron yoke and lower iron yoke through a fixed connection structure, and a polyester belt for wrapping the fixed connection structure is arranged at the fixed connection position.
4. The dry iron core reactor according to claim 1, characterized in that: the iron core column is formed by stacking a plurality of iron core cakes, and at least one of the uppermost iron core cake and the lowermost iron core cake of the iron core column is fixedly connected with the corresponding iron yoke through a fixed connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663018.8A CN108666108B (en) | 2018-06-25 | 2018-06-25 | Dry type iron core reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663018.8A CN108666108B (en) | 2018-06-25 | 2018-06-25 | Dry type iron core reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108666108A CN108666108A (en) | 2018-10-16 |
| CN108666108B true CN108666108B (en) | 2024-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810663018.8A Active CN108666108B (en) | 2018-06-25 | 2018-06-25 | Dry type iron core reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN108666108B (en) |
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| US5990775A (en) * | 1991-05-27 | 1999-11-23 | Kabushiki Kaisha Toshiba | Static electric apparatus with shielding |
| CN2938347Y (en) * | 2006-05-22 | 2007-08-22 | 北海银河高科技产业股份有限公司 | Iron yoke stainless steel pull band clamping device of power transformer |
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|---|---|
| CN108666108A (en) | 2018-10-16 |
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