CN112599338A - Oil baffle plate capable of being changed in shape - Google Patents
Oil baffle plate capable of being changed in shape Download PDFInfo
- Publication number
- CN112599338A CN112599338A CN202011416029.XA CN202011416029A CN112599338A CN 112599338 A CN112599338 A CN 112599338A CN 202011416029 A CN202011416029 A CN 202011416029A CN 112599338 A CN112599338 A CN 112599338A
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- China
- Prior art keywords
- oil baffle
- oil
- paper tube
- coil
- fiber container
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- 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
- H01F27/2876—Cooling
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses an oil baffle capable of being conformal to change, which comprises a paper tube, wherein the paper tube comprises an inner paper tube body and an outer paper tube body, the inner paper tube body and the outer paper tube body are respectively positioned on the inner diameter and the outer diameter of a transformer coil, supporting strips are respectively arranged on the side walls of the inner paper tube body and the outer paper tube body, an inner oil baffle I and an outer oil baffle I which can deform along with the deformation of the paper tube are respectively arranged between the inner paper tube body and the outer paper tube body along the height direction of the coil, and the coil is divided into a plurality of sections by the inner oil baffle I and the outer oil baffle I. The invention can effectively solve the problems that the existing paper tube has manufacturing errors and shrinkage deformation of a dried paper board, the degree of adhesion between the paper tube and an oil blocking plate of an oil seal is not high, a large gap is easy to generate, part of transformer oil does not pass through a coil, the oil flow guiding effect in the coil is reduced, the local temperature rise of the coil is easy to cause overhigh, and the service life of the transformer is influenced.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an oil baffle plate capable of being changed in a conformal manner.
Background
At present, with the increase of the capacity grade of a transformer, the size of a transformer coil is larger and larger, the total loss is increased, and the difficulty of controlling the temperature rise of the coil is also larger and larger. When the coil width direction is large, it may be insufficient to provide two axial oil passages at the inner and outer diameters, and most of the oil flows through the axial oil passages at the inner and outer diameters, resulting in a high temperature at the middle portion in the width direction. In order to solve the problem, an oil seal oil baffle structure is usually adopted to force the oil flow to be guided through all the wire cakes, so that the heat exchange between the coil and the oil can be fully ensured, and the effective heat dissipation of the coil is realized. The inner and outer diameter sides of the transformer coil are all provided with paper tubes which are made by machine rounding and manual manufacturing. Because of the manufacturing error and the shrinkage deformation of the paper board after drying, the paper tube is not highly attached to the oil baffle plate of the oil seal, and a large gap is easily generated. Part of transformer oil does not pass through the coil, so that the oil flow guiding effect in the coil is reduced, the local temperature rise of the coil is easily caused to be overhigh, and the service life of the transformer is influenced.
As shown in fig. 4, an inner oil baffle plate ii 6 and an outer oil baffle plate ii 7 are respectively arranged between the inner and outer diameter side paper tubes 1 of the transformer coil in the prior art along the height direction of the coil, so as to divide the coil into a plurality of sections. When the coil generates heat through current loss and generates heat exchange with nearby cooling oil, the oil generates a thermosiphon phenomenon after being heated, and the coil generates oil flow direction 3 from bottom to top as shown in the figure. Referring to fig. 6 and 7, in the prior art, the inner oil baffle and the outer oil baffle are both circular rings, and a plurality of stay bar holes are uniformly distributed at the positions of the oil baffles, which are close to the stay bars 2. Referring to fig. 5, the transformer coil has paper tubes on both inner and outer diameter sides, and because of manufacturing errors and shrinkage deformation of the paper board after drying, the paper tubes are not highly attached to the oil baffle plate of the oil seal, which is likely to generate a large leakage area, as shown at point i in fig. 5.
Disclosure of Invention
Aiming at the technical problems, the invention provides an oil baffle plate capable of conformal change, which can effectively solve the problems that the current paper tube has manufacturing errors and shrinkage deformation of a dried paper board, the degree of fit between the paper tube and the oil baffle plate is not high, a large gap is easy to generate, part of transformer oil does not pass through a coil, the oil flow guiding effect in the coil is reduced, the local temperature rise of the coil is easy to be too high, and the service life of the transformer is influenced.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a can conform oil baffle who changes, includes the fiber container, the fiber container includes interior fiber container body and outer fiber container body, interior fiber container body and outer fiber container body are located transformer coil internal and external diameter respectively, all be provided with the stay on the lateral wall of interior fiber container body and outer fiber container body, follow between interior fiber container body and the outer fiber container body coil direction of height is equipped with respectively and can be along with the fiber container warp and take place the interior oil baffle I and the outer oil baffle I of deformation, interior oil baffle I will with outer oil baffle I a plurality of districts are cut apart into to the coil.
The material of interior oil baffle I and outer oil baffle I is the elastic material who has high mechanical strength and pliability.
The materials of the edge parts of the inner oil baffle I and the outer oil baffle I, which are correspondingly contacted with the inner paper cylinder body and the outer paper cylinder body, are all elastic materials with high mechanical strength and flexibility.
The inner diameter of the inner oil baffle I is smaller than the outer diameter of the inner paper tube body, and the outer diameter of the outer oil baffle I is larger than the inner diameter of the outer paper tube body.
The inner oil baffle I and the outer oil baffle I are both Nomex paper.
Interior oil baffle I and outer oil baffle I go up with the stay department of contacting mutually all is provided with can with the recess of stay external profile mutual adaptation.
The inner oil baffle I and the outer oil baffle I are arranged between the inner paper cylinder body and the outer paper cylinder body in a left-right alternating mode to form an S-shaped oil path.
The elastic material having high mechanical strength and flexibility is replaced with a high-resilience insulating material.
The invention has the beneficial effects that: according to the invention, the existing inner oil baffle plate II and the existing outer oil baffle plate II are replaced by the inner oil baffle plate I and the outer oil baffle plate I which can deform along with the deformation of the paper tube, so that a reliable oil seal structure is formed by the inner oil baffle plate I and the outer oil baffle plate I, the heat exchange between the coil and oil is ensured to be sufficient, and the temperature rise of the coil is effectively controlled. In order to further improve the technical effect of the invention, the integral material of the inner oil baffle I and the outer oil baffle I adopts an elastic material with high mechanical strength and flexibility, so that the inner oil baffle I and the outer oil baffle I can be tightly fitted with the inner paper cylinder body and the outer paper cylinder body, the effect of high sealing property is achieved, and oil leakage is prevented. As another preferred scheme, the materials of the edge parts of the inner oil baffle I and the outer oil baffle I, which are correspondingly contacted with the inner paper cylinder body and the outer paper cylinder body, adopt elastic materials with high mechanical strength and flexibility, so that the edge parts of the inner oil baffle I and the outer oil baffle I can be tightly attached to the inner paper cylinder body and the outer paper cylinder body on one hand, and the effect of high sealing performance is achieved, and on the other hand, the inner oil baffle I and the outer oil baffle I only adopt the elastic materials with high mechanical strength and flexibility on the edge parts instead of being integrally adopted, and the production cost can be reduced. In order to further improve the inseparable degree of obeying of interior deep bead I and outer deep bead I and interior fiber container body and outer fiber container body, the internal diameter of interior deep bead I is less than the external diameter of interior fiber container body, the external diameter of outer deep bead I is greater than the internal diameter of outer fiber container body, freely bend with fiber container contact position during the installation, as the elasticity regulating variable, make interior deep bead I and outer deep bead I can laminate as far as with the fiber container, force the oil stream direction to guarantee that the coil can be abundant with the heat exchange of oil, realize the effective heat dissipation of coil. Because Nomex has excellent mechanical strength, dielectric strength, still keeps pliability and resilience after drying along with the coil, consequently, interior oil baffle I and outer oil baffle I adopt Nomex paper to make for interior oil baffle I and outer oil baffle I can hug closely the fiber container lateral wall, avoid taking place the leakage problem. Because all be provided with the stay on current interior fiber container body and the outer fiber container body, and the stay also is the oil impregnate point with interior oil baffle I and I contact department of outer oil baffle, in order to overcome this problem, all be provided with the recess that can with the mutual adaptation of stay outside profile on interior oil baffle I and the outer oil baffle I with stay contact department mutually. The inner oil baffle I and the outer oil baffle I are alternately arranged between the inner paper cylinder body and the outer paper cylinder body to form an S-shaped oil path, so that the retention time of cold oil in the paper cylinder can be prolonged, and the heat exchange efficiency is improved. In another preferred embodiment of the present invention, the elastic material with high mechanical strength and flexibility is replaced by a high-resilience insulating material, so that not only the problem of oil leakage can be solved, but also another alternative solution can be provided for users, and the application range of the present invention is expanded.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic structural diagram of an inner oil baffle I of the invention;
FIG. 3 is a schematic structural diagram of an outer oil baffle I of the present invention;
FIG. 4 is a schematic view of the installation of an oil baffle of a transformer in the prior art;
FIG. 5 is a schematic view of a leakage point of an oil baffle of a transformer in the prior art;
FIG. 6 is a schematic structural diagram of an inner oil baffle II in the prior art;
FIG. 7 is a schematic structural diagram of an external oil baffle II in the prior art;
wherein, 1-paper cylinder, 2-stay, 3-oil flow direction, 4-inner oil baffle I, 5-outer oil baffle I, 6-inner oil baffle II, 7-outer oil baffle II.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
As shown in figure 1, the oil baffle capable of being changed in a conformal mode comprises a paper tube 1, wherein the paper tube 1 comprises an inner paper tube body and an outer paper tube body, the inner paper tube body and the outer paper tube body are respectively located on the inner diameter and the outer diameter of a transformer coil, supporting strips 2 are arranged on the side walls of the inner paper tube body and the outer paper tube body, an inner oil baffle I4 and an outer oil baffle I5 which can deform along with deformation of the paper tube 1 are respectively arranged between the inner paper tube body and the outer paper tube body in the height direction of the coil, the coil is divided into a plurality of sections by the inner oil baffle I4 and the outer oil baffle I5, the inner oil baffle I4 and the outer oil baffle I5 are Nomex paper, and the inner oil baffle I4 and the outer oil baffle I5 are arranged between the inner paper tube body and the outer paper tube body in a left-right alternating mode to form an S-shaped oil circuit.
As shown in figure 2, interior oil baffle I4 is the elastic material who has high mechanical strength and pliability, and the internal diameter of interior oil baffle I4 is less than the external diameter of interior fiber container body, and interior oil baffle I4 is provided with the recess that can with stay 2 outside profile mutual adaptation with stay 2 department of contacting mutually.
As shown in FIG. 3, outer oil baffle I5 is the elastic material that has high mechanical strength and pliability, and the external diameter of outer oil baffle I5 is greater than the internal diameter of outer fiber container body, is provided with the recess that can with stay 2 outside profile mutual adaptation on the outer oil baffle I5 with stay 2 contact department.
In the use process of the invention, because Nomex is aromatic polyamide insulating paper which has excellent mechanical strength and dielectric strength and still keeps flexibility and resilience after being dried along with a coil, even if the paper tube 1 shrinks and deforms, the inner oil baffle I4 and the outer oil baffle I5 can be tightly attached to the paper tube 1 without leakage, when the paper tube is actually used, the length of the inner oil baffle I4 and the length of the outer oil baffle I close to the paper tube 1, namely the inner diameter of the inner oil baffle I4 is smaller than the outer diameter of the inner paper tube body, the outer diameter of the outer oil baffle I5 is larger than the inner diameter of the outer paper tube body, the paper tube 1 is freely bent when being installed, when the paper tube 1 shrinks and deforms due to manufacturing errors and drying, the Nomex paper baffle has excellent mechanical strength, flexibility and resilience, can extend back to push against the paper tube along the shrinking direction of the paper tube, and reduce the leakage area between the inner oil baffle I4 and the outer oil baffle I5 and the paper tube 1, and a reliable oil seal structure is formed, so that the heat exchange between the coil and oil can be sufficient, and the temperature rise of the coil is effectively controlled.
Example 2
The edges of the inner oil baffle I4 and the outer oil baffle I5, which are in corresponding contact with the inner paper cylinder body and the outer paper cylinder body, are made of elastic materials with high mechanical strength and flexibility.
The other structures and the methods of use were the same as in example 1.
Example 3
An elastic material having high mechanical strength and flexibility is replaced with a high-resilience insulating material.
The other structures and the methods of use were the same as in example 1.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. An oil baffle capable of being changed in a conformal manner, which is characterized in that: including fiber container (1), fiber container (1) is including interior fiber container body and outer fiber container body, interior fiber container body is located transformer coil internal diameter respectively with outer fiber container body on, all be provided with stay (2) on the lateral wall of interior fiber container body and outer fiber container body, follow between interior fiber container body and the outer fiber container body coil direction of height is equipped with respectively can be along with fiber container (1) warp and take place the interior oil baffle I (4) and outer oil baffle I (5) of deformation, interior oil baffle I (4) and outer oil baffle I (5) will a plurality of districts are cut apart into to the coil.
2. A conformable change oil deflector as recited in claim 1, wherein: the materials of the inner oil baffle I (4) and the outer oil baffle I (5) are all elastic materials with high mechanical strength and flexibility.
3. A conformable change oil deflector as recited in claim 1, wherein: the materials of the edge parts, corresponding to and in contact with the inner paper cylinder body and the outer paper cylinder body, of the inner oil baffle I (4) and the outer oil baffle I (5) are all elastic materials with high mechanical strength and flexibility.
4. A conformable change oil deflector as in claim 2 or 3, wherein: the inner diameter of the inner oil baffle I (4) is smaller than the outer diameter of the inner paper tube body, and the outer diameter of the outer oil baffle I (5) is larger than the inner diameter of the outer paper tube body.
5. A conformable variable oil deflector as in any one of claims 1-3, wherein: the inner oil baffle I (4) and the outer oil baffle I (5) are both Nomex paper.
6. A conformable variable oil deflector as in any one of claims 1-3, wherein: interior oil baffle I (4) and outer oil baffle I (5) go up with stay (2) contact mutually the department all be provided with can with stay (2) external profile mutually adapted's recess.
7. A conformable variable oil deflector as in any one of claims 1-3, wherein: the inner oil baffle I (4) and the outer oil baffle I (5) are alternately arranged between the inner paper cylinder body and the outer paper cylinder body from left to right to form an S-shaped oil path.
8. A conformable change oil deflector as in claim 2 or 3, wherein: the elastic material having high mechanical strength and flexibility is replaced with a high-resilience insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416029.XA CN112599338B (en) | 2020-12-03 | 2020-12-03 | Oil baffle plate capable of being changed in shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416029.XA CN112599338B (en) | 2020-12-03 | 2020-12-03 | Oil baffle plate capable of being changed in shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112599338A true CN112599338A (en) | 2021-04-02 |
| CN112599338B CN112599338B (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011416029.XA Active CN112599338B (en) | 2020-12-03 | 2020-12-03 | Oil baffle plate capable of being changed in shape |
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| Country | Link |
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| CN (1) | CN112599338B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314314A (en) * | 2021-05-19 | 2021-08-27 | 辽宁华冶集团发展有限公司 | High-reliability frequency converter phase-shifting rectifier transformer |
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|---|---|---|---|---|
| CN201608026U (en) * | 2009-12-24 | 2010-10-13 | 辽宁易发式电气设备有限公司 | Transformer with oil baffles in coil |
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| EP2602799A1 (en) * | 2011-12-08 | 2013-06-12 | ABB Technology AG | Coil-fixture and oil-transformer |
| CN203415376U (en) * | 2013-07-26 | 2014-01-29 | 武汉变压器有限责任公司 | Pie winding with oil guide paper tube |
| CN104795207A (en) * | 2015-04-14 | 2015-07-22 | 国家电网公司 | Paper tube oil retaining type transformer and manufacturing method thereof |
| CN105402134A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil-proofing cover and scroll compressor comprising same |
| CN205789451U (en) * | 2016-06-29 | 2016-12-07 | 中国西电电气股份有限公司 | A kind of used in transformer coil oil baffle |
| CN206040400U (en) * | 2016-08-31 | 2017-03-22 | 中国西电电气股份有限公司 | Current -limiting is with continuous oil baffle |
| CN208240454U (en) * | 2018-05-23 | 2018-12-14 | 南通晓星变压器有限公司 | Oil-immersed transformer coil |
| CN209357583U (en) * | 2019-01-25 | 2019-09-06 | 郑州空港科锐电力设备有限公司 | Oil duct support component suitable for transformer and the winding using this support component |
| CN211628862U (en) * | 2019-12-31 | 2020-10-02 | 济南西门子变压器有限公司 | Power transformer |
-
2020
- 2020-12-03 CN CN202011416029.XA patent/CN112599338B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608026U (en) * | 2009-12-24 | 2010-10-13 | 辽宁易发式电气设备有限公司 | Transformer with oil baffles in coil |
| EP2602799A1 (en) * | 2011-12-08 | 2013-06-12 | ABB Technology AG | Coil-fixture and oil-transformer |
| CN102903480A (en) * | 2012-10-25 | 2013-01-30 | 中国西电电气股份有限公司 | Transformer oil way structure |
| CN203415376U (en) * | 2013-07-26 | 2014-01-29 | 武汉变压器有限责任公司 | Pie winding with oil guide paper tube |
| CN104795207A (en) * | 2015-04-14 | 2015-07-22 | 国家电网公司 | Paper tube oil retaining type transformer and manufacturing method thereof |
| CN105402134A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil-proofing cover and scroll compressor comprising same |
| CN205789451U (en) * | 2016-06-29 | 2016-12-07 | 中国西电电气股份有限公司 | A kind of used in transformer coil oil baffle |
| CN206040400U (en) * | 2016-08-31 | 2017-03-22 | 中国西电电气股份有限公司 | Current -limiting is with continuous oil baffle |
| CN208240454U (en) * | 2018-05-23 | 2018-12-14 | 南通晓星变压器有限公司 | Oil-immersed transformer coil |
| CN209357583U (en) * | 2019-01-25 | 2019-09-06 | 郑州空港科锐电力设备有限公司 | Oil duct support component suitable for transformer and the winding using this support component |
| CN211628862U (en) * | 2019-12-31 | 2020-10-02 | 济南西门子变压器有限公司 | Power transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314314A (en) * | 2021-05-19 | 2021-08-27 | 辽宁华冶集团发展有限公司 | High-reliability frequency converter phase-shifting rectifier transformer |
| CN113314314B (en) * | 2021-05-19 | 2023-05-26 | 辽宁华冶集团发展有限公司 | High-reliability phase-shifting rectifier transformer of frequency converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112599338B (en) | 2022-08-23 |
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