CN114864246A - Production process and application of multilayer composite magnetic conduction screen magnetic mesh belt - Google Patents
Production process and application of multilayer composite magnetic conduction screen magnetic mesh belt Download PDFInfo
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- CN114864246A CN114864246A CN202110566842.3A CN202110566842A CN114864246A CN 114864246 A CN114864246 A CN 114864246A CN 202110566842 A CN202110566842 A CN 202110566842A CN 114864246 A CN114864246 A CN 114864246A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 92
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000009941 weaving Methods 0.000 claims abstract description 21
- 239000000696 magnetic material Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009940 knitting Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003749 cleanliness Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002040 relaxant effect Effects 0.000 claims description 3
- 210000004243 sweat Anatomy 0.000 claims description 3
- 239000002889 diamagnetic material Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 4
- 230000005389 magnetism Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000009998 heat setting Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt, which comprises the following specific steps: the method comprises the following steps: selecting a magnetic material; step two: the warp and weft threads are interwoven according to a rule in the production process; a multi-heald weaving method is adopted, so that the magnetic effect of the magnetic conduction screen of the mesh belt is effectively increased; each roller of the machine, which is in contact with the warp threads, can rotate flexibly and has a smooth surface; and the danger of sharp-corner discharge is reduced. The weft insertion of the machine adopts a non-metal sword belt, so that no metal powder is generated in the production process; the machine adopts totally-enclosed operation to avoid sundries; step three: after the air is heated to the required process temperature by the heating source, the air is directly conveyed to the upper hot air box and the lower hot air box by the fan, so that the air is circulated at high speed in a reciprocating manner to form a closed loop heating system; ensuring that the temperature in the heat setting can reach the change standard of the wire. The invention effectively promotes the magnetic conduction, magnetic leakage and magnetism dispelling of the power transformer, increases the oil way, reduces the oil temperature, reduces the noise pollution, improves the operation efficiency and prolongs the service life of internal parts.
Description
Technical Field
The invention is designed and applied to the technical field of oil immersed and dry type transformers, and particularly relates to a production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt.
Background
However, in practical application, the leakage flux of the large-capacity transformer is too large, so that the loss of the leakage flux generated in a structural part is large, and the working efficiency and the quality of the transformer are reduced.
When the transformer operates, the winding passes current to generate a magnetic field, and because a transformer core in the winding is a good magnetic conductor, most magnetic flux passes through the core. However, some magnetic flux (i.e. leakage flux) is conducted to the transformer housing through the gap or the transformer oil, and eddy current is induced in the housing to generate heat, so that not only is the temperature rise of the transformer increased, but also the aging speed of the internal components of the transformer is accelerated. The transformer generates heat, the temperature of an internal insulating part is directly increased, the service life of an insulating material is shortened, and finally the transformer is subjected to discharge breakdown.
According to the research of theory and practice, the proper magnetic conduction screen magnetic net belt is additionally arranged at the proper position inside and outside the transformer, so that the magnetic leakage magnetic circuit is guided, and the loss of the structural part is reduced.
In order to solve the problems, a production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt are provided.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the technology, and the invention provides:
a production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt are disclosed, wherein the production process specifically comprises the following steps:
the method comprises the following steps: selecting materials: selecting a magnetic conductive material, a magnetic shielding material and a semi-magnetic conductive material;
step two: inspecting the line; detecting the special metal engineering material by using a detection instrument, wherein the detection range comprises the thickness of the wire diameter and the soft and hard tension indexes, and the magnetic screen belt of the magnetic conduction screen of the transformer with different materials, different wire diameters and different densities is formulated according to the requirements of the size and the magnetic flux of the transformer;
step three: warping; selecting bobbins with consistent wire diameters and consistent tension from the qualified wire rods detected in the step two for warping, keeping the tension of each bobbin the same in the warping process, keeping the tension roller smooth, rotating flexibly and avoiding friction in the warping link;
step four: checking whether the cleanliness and the smoothness of a wire supporting roller, a hump and a net collecting roller of the machine reach the standard or not;
step five: a step of heald and buckle transmission; in the process of heald and buckle delivering, the weaving line runs smoothly on the weaving machine, and the phenomena of line pressing, diagonal pulling, line fixing and knotting are avoided;
step six: weaving production; a multi-heald weaving method is adopted, and a weaving machine interweaves warps and wefts in production according to a certain rule; the original warp and weft are woven into a multi-layer, reciprocating and knitting (knitting) magnetic conduction and shielding magnetic net belt of the transformer.
Step seven: mounting a finished product; the transformer is arranged at a proper position and in available space inside and outside the transformer by adopting methods of covering, shielding, embedding, hanging and the like.
As an improvement, the magnetic materials are magnetic conductive materials and magnetic shielding materials, and the good magnetic materials can isolate and quickly conduct leakage flux generated by the transformer in the working process.
As an improvement, the magnetic material is a magnetic conduction material, a shielding magnetic material and a semi-conduction magnetic material.
As an improvement, in the second step, the multi-heddle weaving method needs to ensure that the tension of each thread is consistent in the warping, heddle transferring, knot transferring and weaving processes, and no broken warp exists;
a. in the production process, the mechanical intelligent monitoring avoids the occurrence of net body hard damage, crease, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, sweat stains and edge cracks at two sides, avoids sharp corner discharge and improves the product quality;
b. relaxing the meridians: the magnetic screen belt ensures that no part of the magnetic screen belt is higher than the screen surface, the hole on the surface of the screen body is deformed, and no side-by-side loose warp exists, the reverse line is ensured to be smooth and have no edge, and the flatness of the magnetic screen belt of the magnetic screen of the multilayer composite transformer is ensured;
c. reversing the lines: the reverse line is required to be smooth and have no edge;
d. let-off: the weft delivering and the weft shearing are both regulated by a servo motor through a computer, and the weft shearing time is adjusted, so that the weft is better clamped on the rapier head, and the net surface is kept smooth;
e. wire sorting: no thread can appear on the surface of the net body;
as an improvement, in the sixth step, the multilayer composite transformer magnetic conduction screen magnetic finished product mesh belt is a multi-layer reciprocating woven (knitted) mesh belt which is stiff and smooth in the longitudinal direction and can be bent freely in the transverse direction.
Compared with the prior art, the invention has the advantages that:
(1) due to the convenient installation, the mesh belts can be combined into various geometric shapes at will.
(2) The noise is reduced.
(3) Simple structure, it is firm to support the fastener.
(4) The magnetic circuit is smooth, and the temperature rise can be reduced. Because holes are fully distributed on the surface of the multilayer composite magnetic conduction screen magnetic mesh belt, transformer oil can flow inside conveniently, and the temperature inside the transformer is stable.
(5) The whole temperature is reduced, and the service life of the insulating material part is prolonged.
Drawings
Fig. 1 is a schematic view showing a production process and an application state of a multilayer composite magnetic conduction screen magnetic mesh belt.
Fig. 2 is a schematic diagram of a production process and an application state of the multilayer composite magnetic conduction screen magnetic mesh belt.
Fig. 3 is a schematic diagram of a production process and an application state of the multilayer composite magnetic conduction screen magnetic mesh belt.
Fig. 4 is a fourth schematic view of the production process and the application state of the multilayer composite magnetic conduction screen magnetic mesh belt of the invention.
Detailed Description
The production process and application of the multilayer composite magnetic conduction screen magnetic mesh belt are further described in detail with reference to the accompanying drawings.
With reference to the attached drawings, fig. 1 to 4 show a production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt, wherein the production process specifically comprises the following steps:
the method comprises the following steps: selecting materials: selecting magnetic materials as magnetic conduction materials, screen magnetic materials and semi-magnetic materials;
step two: inspecting the line; detecting the special metal engineering material by using a detection instrument, wherein the detection range comprises the thickness of the wire diameter and the soft and hard tension indexes, and the magnetic screen belt of the magnetic conduction screen of the transformer with different materials, different wire diameters and different densities is formulated according to the requirements of the size and the magnetic flux of the transformer;
step three: warping; selecting bobbins with consistent wire diameters and consistent tension from the qualified wire rods detected in the step two for warping, keeping the tension of each bobbin the same in the warping process, keeping the tension roller smooth, rotating flexibly and avoiding friction in the warping link;
step four: checking whether the cleanliness and the smoothness of a wire supporting roller, a hump and a wire collecting roller of the machine reach the standard or not;
step five: a step of heald and buckle transmission; in the process of heald and buckle delivering, the weaving line runs smoothly on the weaving machine, and the phenomena of line pressing, diagonal pulling, line fixing and knotting are avoided;
step six: weaving production; a multi-heald weaving method is adopted, and a weaving machine interweaves warps and wefts in production according to a certain rule; the original warp and weft are woven into a multi-layer, reciprocating and (needle) woven magnetic conduction screen belt of the transformer.
Step seven: mounting a finished product; the transformer is arranged at a proper position and in an available space inside the transformer by adopting a covering, shielding, embedding, hanging and the like method.
In this embodiment, as shown in the figure, the magnetic material is a magnetic conductive and shielding material.
In this embodiment, as shown in the figure, the magnetic material is a magnetic conductive material and a semi-magnetic conductive material.
In this embodiment, as shown in the figure, in the second step, it is required to ensure that the tension of each yarn is consistent during the warping, shedding and weaving process, and no broken warp exists in the multi-heddle weaving method;
a. in the production process, the mechanical intelligent monitoring avoids the occurrence of net body hard damage, crease marks, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, sweat stains and edge cracks at two sides, avoids sharp corner discharge and improves the product quality;
b. relaxing the meridians: the magnetic shielding mesh belt of the multilayer composite transformer ensures no higher mesh surface, deformation of holes on the surface of the mesh body and no side-by-side loose warp, ensures that a reverse line is smooth and has no edge, and ensures the flatness of the magnetic shielding mesh belt of the multilayer composite transformer;
c. rewinding: the reverse line is required to be smooth and have no edge;
d. let-off: the weft delivering and cutting are both regulated by a servo motor through a computer, and the weft cutting time is adjusted, so that the weft is better clamped on the rapier head, and the net surface is kept flat;
e. wire sorting: no thread can appear on the surface of the net body;
embodiments of the invention: (1) adopting magnetic conductive material or semi-magnetic conductive material to form a mesh belt by a knitting (needle) weaving mode; (2) the magnetic conduction and screen magnetic net belt can be combined into a plurality of geometrical shapes with a plurality of layers, areas and volumes according to the shielding requirements of the magnetic release source. The leakage magnetic source coverage is realized through various combination schemes.
The product is two main products:
the magnetic conduction screen magnetic mesh belt is applied to a large oil-immersed dry-type transformer and can effectively block and dredge a magnetic field. A transformer core generates certain magnetic flux leakage in the operation process, eddy current is induced in a shell by the magnetic flux leakage to generate heat, the oil temperature of the transformer is increased, insulating materials are aged, and the product does not have a substitute product in the market at present. The defect of magnetic leakage in the existing oil-immersed transformer is overcome, and the potential safety hazard of the operation of the transformer is prevented; the product does not produce metal powder in the processes of material selection, weaving and shaping, so that the safety performance and quality requirements of the transformer product are effectively improved; reduces energy consumption and adds power for realizing national 2060 year carbon neutralization and prospect target in ultra-high voltage.
The invention has the main effects of promoting the magnetic conduction, magnetic leakage and magnetism dispelling of the oil immersed transformer, increasing an oil path, reducing the oil temperature, reducing the noise pollution, improving the operation efficiency and prolonging the service life of an insulating material;
the product is mainly applied to the field of oil-immersed and dry-type transformers.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A production process and application of a multilayer composite magnetic conduction screen magnetic mesh belt are characterized in that: the production process comprises the following specific steps:
the method comprises the following steps: selecting materials: selecting magnetic materials as magnetic conduction materials, semi-magnetic conduction materials and screen magnetic materials;
step two: inspecting the line; detecting the special metal material by using a detection instrument, wherein the detection range comprises the thickness of the wire diameter and the soft and hard tension indexes, and the magnetic screen belt of the transformer magnetic conduction screen with different materials, different wire diameters and different densities is formulated according to the requirements of the size and the magnetic flux of the transformer;
step three: warping; selecting bobbins with consistent wire diameters and consistent tension from the qualified wire rods detected in the step two for warping, keeping the tension of each bobbin the same in the warping process, keeping the tension roller smooth, rotating flexibly and avoiding friction in the warping link;
step four: checking whether the cleanliness and the smoothness of a wire supporting roller, a hump and a wire collecting roller of the machine reach the standard or not;
step five: a step of heald and buckle transmission; in the process of heald and buckle delivering, the weaving line runs smoothly on the weaving machine, and the phenomena of line pressing, diagonal pulling, line fixing and knotting are avoided;
step six: weaving production; a multi-heald weaving (knitting) method is adopted, and a loom interweaves warps and wefts in production according to a certain rule; the original warp and weft are woven into a multi-layer, reciprocating and (needle) woven magnetic conduction screen belt of the transformer.
Step seven: mounting a finished product; the transformer is arranged at a proper position and in available space inside and outside the transformer by adopting methods of covering, shielding, embedding, hanging and the like.
2. The production process and the application of the multilayer composite magnetic conduction screen magnetic mesh belt according to claim 1 are characterized in that: the magnetic material is a magnetic conductive and diamagnetic material.
3. The production process and the application of the multilayer composite magnetic conduction screen magnetic mesh belt according to claim 1 are characterized in that: the magnetic material is a magnetic conducting material and a screen magnetic material.
4. The production process and the application of the multilayer composite magnetic conduction screen magnetic mesh belt according to claim 2 or 3 are characterized in that: in the second step, the multi-heddle (knitting) method needs to ensure that the tension of each thread is consistent and no broken warp exists in the warping, heald passing, knot passing and knitting processes;
a. in the production process, the mechanical intelligent monitoring avoids the occurrence of net body hard damage, crease marks, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, sweat stains and edge cracks at two sides, avoids sharp corner discharge and improves the product quality;
b. relaxing the meridians: ensuring that no net surface is higher than the net surface, so that the hole on the net surface is deformed and no parallel loose warps exist;
c. reversing the lines: the reverse line is required to be smooth and have no edge;
d. let-off: the weft delivering and the weft shearing are both regulated by a servo motor through a computer, and the weft shearing time is adjusted, so that the weft is better clamped on the rapier head, and the net surface is kept smooth;
e. wire sorting: no thread can appear on the surface of the net body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110566842.3A CN114864246A (en) | 2021-05-24 | 2021-05-24 | Production process and application of multilayer composite magnetic conduction screen magnetic mesh belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110566842.3A CN114864246A (en) | 2021-05-24 | 2021-05-24 | Production process and application of multilayer composite magnetic conduction screen magnetic mesh belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114864246A true CN114864246A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110566842.3A Pending CN114864246A (en) | 2021-05-24 | 2021-05-24 | Production process and application of multilayer composite magnetic conduction screen magnetic mesh belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114864246A (en) |
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2021
- 2021-05-24 CN CN202110566842.3A patent/CN114864246A/en active Pending
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Addressee: TBEA (Shenyang) new electrical materials Co.,Ltd. (The principal of patent) Document name: Notice of deemed failure to entrust a patent agency (individual) |
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Application publication date: 20220805 |
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