CN113284728A - Production process and installation mode of oil-immersed power transformer noise reduction device - Google Patents
Production process and installation mode of oil-immersed power transformer noise reduction device Download PDFInfo
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- H—ELECTRICITY
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- 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
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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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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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
- H01F27/33—Arrangements for noise damping
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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
- H01F27/346—Preventing or reducing leakage fields
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Abstract
The invention discloses a production process and an installation mode of a noise reduction device of an oil-immersed power transformer, wherein the production process and the installation mode of the noise reduction device of the oil-immersed power transformer comprise the following steps: the method of covering, shielding, embedding and the like is adopted to be arranged on noise sources such as a transformer core and the like and available space on the surface and inside of a transformer shell; selecting materials, inspecting threads, warping, inspecting, delivering and buckling, knitting and producing and installing finished products. The invention has the advantages of obvious noise reduction effect, convenient installation, increased fluidity of insulating oil in the transformer, reduced oil temperature of the transformer, prolonged service life of the transformer, reduced power transformation cost for the country, reduced occupation amount of construction land, enhanced environmental protection, improved social benefit, self-filtration performance of the transformer oil, magnetic field shielding effect in the transformer and mixed weaving of two media, and is worthy of popularization.
Description
Technical Field
The invention relates to a production process and an installation mode of a noise reduction device of an oil-immersed power transformer.
Background
The high-voltage power transformer and other large-scale electrical equipment play an important role in the high-voltage power transmission and transformation line, and the safety and the high efficiency of the working condition of the high-voltage power transformer are one of the keys of whether the electric energy can be transmitted with high quality. With the advance of urban electric loads to urban centers, large power transformers are required to be installed in urban densely populated areas, such as commercial centers, hospitals, schools, and residential areas. However, the noise of the large transformer exceeds the standard, so that the planning of the power substation is limited and the construction is difficult. And even real estate prices. According to the environmental noise standard (GB3096-93) of urban areas in China, the noise standard value is definitely specified to be not higher than 70 decibels. The noise pollution of large transformers in China at present is difficult to reach the standard. The transformer substation needs to be as close to the load center as possible. Both are difficult to be compatible. The existing solution is that 1, a substation is built far away from a city center, loss is increased in the power transmission process, and hidden power supply danger is increased. 2. The size of the transformer is increased, the manufacturing cost is increased, the occupied land is increased, and the elevation construction cost is increased.
The existing problem is that when the transformer runs, the winding generates a magnetic field after passing current, and most of magnetic flux is in the iron core because the transformer iron core in the winding is a good magnetic conductor. The multilayer sheet iron chip generates resonance under the action of a magnetic field; but there is also some flux that is conducted through the insulating medium and air to the transformer housing and also resonates. The noise is conducted to the outside through the metal shell to cause noise. The larger the voltage, the larger the current, and the larger the noise. The current solution and the existing problems are 1, reducing the magnetic flux, and causing the material cost to be greatly increased. 2. The size of the transformer is increased; resulting in increased land costs. In order to solve the technical problem, a production process and an installation mode of the oil-immersed power transformer noise reduction device 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 a mounting mode of a noise reduction device of an oil-immersed power transformer are characterized in that: the production process and the installation mode of the oil-immersed power transformer noise reduction device are as follows:
the method comprises the following steps: selecting materials; selecting a special metal engineering material as a raw 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 making noise reduction devices of different materials, different wire diameters and different densities according to the requirements of customers;
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 knitting (knitting) noise reduction device.
Step seven: mounting a finished product; covering and absorbing transformer iron core and other noise sources; the transformer is arranged on the surface of a transformer shell (oil tank) and in the available space of the transformer shell (oil tank) by adopting a covering, shielding and embedding method.
As an improvement, in the sixth step, each roller of the weaving machine, which is in contact with the warp, can flexibly rotate and has a smooth surface; the weft insertion of the loom adopts a carbon fiber sword belt, so that no metal powder is generated in the production process; the loom adopts totally closed operation, prevents the pollution of debris.
As improvement, the device is provided with mechanical intelligent monitoring, and is used for avoiding the phenomena of plate body hard damage, crease marks, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, uneven tension and lotus leaf edges in the production process and improving the product quality.
As an improvement, in the sixth step, the warp needs to be ensured not to be higher than the plate surface, deform the holes and loose warp side by side; the smooth and edge-free reverse line is ensured, and the flatness of the noise reduction device is ensured.
In the fifth step, weft passing and weft cutting are both regulated by a servo motor through a computer, weft cutting time is adjusted, weft is enabled to be clamped on the rapier head better, broken weft is subjected to complementary weaving according to weaving textures, but the broken weft is not higher than a net surface after being repaired, and the net surface of weaving is kept flat;
as a modification, in step six, the finished mesh of the noise reduction device is a mesh belt which is stiff and smooth in the longitudinal direction, can be bent freely in the transverse direction, is multi-layer, is reciprocating and is woven (knitted).
As an improvement, in the sixth step, the installation mode of the finished product net of the noise reduction device is convenient and quick; on the premise of not expanding the capacity of the transformer, the finished product net of the noise reduction device covers, absorbs and weakens the noise of the transformer in an internal and external combination mode.
As an improvement, the special metal engineering material is a special magnetic metal material; the good magnetic material can isolate and quickly conduct the magnetic leakage generated by the transformer in the working process, reduce resonance and further reduce noise.
As an improvement, the special metal engineering material is a polymer synthetic material; in the production process, 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 special metal engineering material; and ensuring that the temperature of the net body in the heat setting can reach and be fixed to the standard of the temperature required by the high molecular engineering material. The ductility of the noise reduction device is stabilized in the process, the noise reduction device produced by high molecular engineering materials is prevented from being contracted and deformed in the using process, and the structural stability of the noise reduction device is ensured.
As an improvement, the special metal engineering material simultaneously adopts two wires of a special magnetic metal material and a high molecular synthetic material; in the production process, 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 and fix the temperature standard required by the high molecular engineering material, and playing a role in stabilizing the structure; the weaving mode that two kinds of superior materials combined together both can be through reducing resonance, noise reduction, also can be through the refractive index difference of different media, noise reduction.
Compared with the prior art, the invention has the advantages that:
(1) the noise reduction effect is improved by 1-20% (different wires and different thicknesses are adopted for the noise reduction device, and the noise reduction effect is different); the original 70db is reduced to below 60 db. The requirement of national noise control standard is fully met, so that a large substation can enter an urban load center. The power supply loss is reduced, and the power supply efficiency is improved.
(2) The installation is convenient; the invention can be installed at any angle near the transformer noise source. Directly shielding the transformer noise source.
(3) The oil way is increased; the invention can increase the fluidity (oil path) of the insulating oil in the transformer, reduce the oil temperature of the transformer, prolong the service life of the transformer, reduce the power transformation cost for the country, reduce the occupation amount of the construction land, enhance the environmental protection and improve the social benefit.
(4) The transformer oil self-filtering device has the self-filtering performance of the transformer oil, reduces floating impurities, reduces the discharge probability and enhances the safe operation reliability of the transformer.
(5) The transformer oil has the shielding effect of the magnetic field inside the transformer, reduces magnetic leakage, causes local heating, improves the insulating property of the transformer oil, prolongs the service life of the large transformer and improves the safe operation reliability of the transformer.
(6) The two media are mixed and woven and applied near a transformer sound wave source, and due to different echoes and different reflection wavelength frequencies, the transmission direction of the sound wave changes during reciprocal refraction, so that the refraction frequency of the sound wave is reduced, and finally the effect of reducing noise is achieved.
Drawings
Fig. 1 is a schematic view of a production process and a use state of a noise reduction device in an installation mode of the noise reduction device for an oil-immersed power transformer.
Fig. 2 is a schematic diagram of the measurement of the wire diameter of the noise reduction device in the production process and installation mode of the noise reduction device for the oil-immersed power transformer.
Fig. 3 is a schematic view of mesh measurement of the noise reduction device in the production process and installation mode of the noise reduction device for the oil-immersed power transformer.
Fig. 4 is a schematic diagram of density measurement of the noise reduction device in the production process and installation mode of the noise reduction device for the oil-immersed power transformer.
Detailed Description
The production process and the installation method of the oil-immersed power transformer noise reduction device are further described in detail with reference to the accompanying drawings.
Embodiment 1, a production process and an installation method of a noise reduction device for an oil-immersed power transformer are specifically as follows:
the method comprises the following steps: selecting materials; selecting a special magnetic metal material as a raw 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 making noise reduction devices of different materials, different wire diameters and different densities according to the requirements of customers;
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 knitting (knitting) noise reduction device.
Step seven: mounting a finished product; covering and absorbing transformer iron core and other noise sources; the transformer is arranged on the surface of a transformer shell (oil tank) and in the available space of the transformer shell (oil tank) by adopting a covering, shielding and embedding method.
In the sixth step, each roller of the loom, which is in contact with the warp, is flexible to rotate and has a smooth surface; the weft insertion of the loom adopts a carbon fiber sword belt, so that no metal powder is generated in the production process; the loom adopts totally closed operation, prevents the pollution of debris.
In the embodiment, the device is provided with mechanical intelligent monitoring, and is used for avoiding the phenomena of hard damage, crease, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, uneven tension and lotus leaf edges in the production process and improving the product quality.
In the sixth step, it is necessary to ensure that the warp yarns do not protrude above the board surface, deform the holes, and move side by side; the smooth and edge-free reverse line is ensured, and the flatness of the noise reduction device is ensured.
In the fifth step, the weft passing and cutting are both regulated by the servo motor through the computer, the weft cutting time is adjusted, the weft is better clamped on the rapier head, the broken weft is subjected to complementary weaving according to the weaving texture, but the broken weft is not higher than the net surface after the repair, and the smoothness of the woven net surface is kept;
in this embodiment, in step six, the finished mesh of the noise reduction device is a mesh belt that is stiff and smooth in the longitudinal direction, freely bendable in the transverse direction, multi-layer, reciprocating, and woven (knitted).
In the sixth step, the finished net of the noise reduction device is mounted conveniently and quickly; on the premise of not expanding the capacity of the transformer, the finished product net of the noise reduction device covers, absorbs and weakens the noise of the transformer in an internal and external combination mode.
In the embodiment, the good magnetic material can isolate and quickly conduct the magnetic leakage generated by the transformer in the working process, reduce resonance and further reduce noise.
Embodiment 2, a production process and an installation method of a noise reduction device for an oil-immersed power transformer are specifically as follows:
the method comprises the following steps: selecting materials; selecting a high-molecular synthetic material as a raw 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 making noise reduction devices of different materials, different wire diameters and different densities according to the requirements of customers;
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 knitting (knitting) noise reduction device.
Step seven: mounting a finished product; covering and absorbing transformer iron core and other noise sources; the transformer is arranged on the surface of a transformer shell (oil tank) and in the available space of the transformer shell (oil tank) by adopting a covering, shielding and embedding method.
In the sixth step, each roller of the loom, which is in contact with the warp, is flexible to rotate and has a smooth surface; the weft insertion of the loom adopts a carbon fiber sword belt, so that no metal powder is generated in the production process; the loom adopts totally closed operation, prevents the pollution of debris.
In the embodiment, the device is provided with mechanical intelligent monitoring, and is used for avoiding the phenomena of hard damage, crease, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, uneven tension and lotus leaf edges in the production process and improving the product quality.
In the sixth step, it is necessary to ensure that the warp yarns do not protrude above the board surface, deform the holes, and move side by side; the smooth and edge-free reverse line is ensured, and the flatness of the noise reduction device is ensured.
In the fifth step, the weft passing and cutting are both regulated by the servo motor through the computer, the weft cutting time is adjusted, the weft is better clamped on the rapier head, the broken weft is subjected to complementary weaving according to the weaving texture, but the broken weft is not higher than the net surface after the repair, and the smoothness of the woven net surface is kept;
in this embodiment, in step six, the finished mesh of the noise reduction device is a mesh belt that is stiff and smooth in the longitudinal direction, freely bendable in the transverse direction, multi-layer, reciprocating, and woven (knitted).
In the sixth step, the finished net of the noise reduction device is mounted conveniently and quickly; on the premise of not expanding the capacity of the transformer, the finished product net of the noise reduction device covers, absorbs and weakens the noise of the transformer in an internal and external combination mode.
In the embodiment, in the production process, 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 a 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 special metal engineering material; and ensuring that the temperature of the net body in the heat setting can reach and be fixed to the standard of the temperature required by the high molecular engineering material. The ductility of the noise reduction device is stabilized in the process, the noise reduction device produced by high molecular engineering materials is prevented from being contracted and deformed in the using process, and the structural stability of the noise reduction device is ensured.
Embodiment 3, a production process and an installation method of a noise reduction device for an oil-immersed power transformer are specifically as follows:
the method comprises the following steps: selecting materials; selecting a special magnetic metal material and a high-molecular synthetic material as raw 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 making noise reduction devices of different materials, different wire diameters and different densities according to the requirements of customers;
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 knitting (knitting) noise reduction device.
Step seven: mounting a finished product; covering and absorbing transformer iron core and other noise sources; the transformer is arranged on the surface of a transformer shell (oil tank) and in the available space of the transformer shell (oil tank) by adopting a covering, shielding and embedding method.
In the sixth step, each roller of the loom, which is in contact with the warp, is flexible to rotate and has a smooth surface; the weft insertion of the loom adopts a carbon fiber sword belt, so that no metal powder is generated in the production process; the loom adopts totally closed operation, prevents the pollution of debris.
In the embodiment, the device is provided with mechanical intelligent monitoring, and is used for avoiding the phenomena of hard damage, crease, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, uneven tension and lotus leaf edges in the production process and improving the product quality.
In the sixth step, it is necessary to ensure that the warp yarns do not protrude above the board surface, deform the holes, and move side by side; the smooth and edge-free reverse line is ensured, and the flatness of the noise reduction device is ensured.
In the fifth step, the weft passing and cutting are both regulated by the servo motor through the computer, the weft cutting time is adjusted, the weft is better clamped on the rapier head, the broken weft is subjected to complementary weaving according to the weaving texture, but the broken weft is not higher than the net surface after the repair, and the smoothness of the woven net surface is kept;
in this embodiment, in step six, the finished mesh of the noise reduction device is a mesh belt that is stiff and smooth in the longitudinal direction, freely bendable in the transverse direction, multi-layer, reciprocating, and woven (knitted).
In the sixth step, the finished net of the noise reduction device is mounted conveniently and quickly; on the premise of not expanding the capacity of the transformer, the finished product net of the noise reduction device covers, absorbs and weakens the noise of the transformer in an internal and external combination mode.
In the embodiment, in the production process, 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 a high speed in a reciprocating manner to form a closed loop heating system; ensuring that the temperature in the heat setting can reach and fix the temperature standard required by the high molecular engineering material, and playing a role in stabilizing the structure; the weaving mode that two kinds of superior materials combined together both can be through reducing resonance, noise reduction, also can be through the refractive index difference of different media, noise reduction.
The working principle of the invention is as follows: according to the acoustic principle, noise sound waves often encounter obstacles in the process of propagation, and then the sound waves are emitted into one medium (air) and enter another medium. Since the acoustic propagation properties of the two media are different and the surface shape of the obstacle is different, the acoustic wave is repeatedly refracted in the different media, and thus a part of noise energy is consumed; and another part of the sound waves are transmitted into the obstacle. The purpose of noise reduction can be achieved by reducing the wavelength and the refraction times by utilizing the impedance characteristic principle that the medium is different and the wavelength is different.
The smooth surface reflects sound waves and the rough surface refracts sound waves. The surface and the inside of the invention are porous structures with different curvature radiuses, when sound waves pass through the curved porous materials, the sound waves are repeatedly refracted in the process due to the internal friction of the materials and the friction between the air of the small holes of the materials and the walls of the holes, so that the wavelength is weakened, and the sound wave energy is greatly absorbed and attenuated. Thereby achieving the purpose of noise reduction.
According to the invention, the multi-layer, reciprocating and knitting (knitting) porous noise reduction device is produced from different engineering materials according to a certain rule, so that noise energy generated by a large-scale transformer can be effectively absorbed and attenuated, and the technical aim of noise reduction is achieved.
In the invention, the noise reduction device has two installation modes; one of the noise reduction devices is arranged in the transformer, and in the mode, the manufactured noise reduction device is arranged in the transformer in a plugging or embedding mode and is close to a noise source; the other method is to adopt covering, shielding, embedding and other methods to install the transformer on the surface of the transformer shell (oil tank) and the available space inside the transformer shell (oil tank).
In the mode, the noise reduction devices are woven into regular geometric shapes including sheet, strip, sphere, diamond, cylinder and the like by adopting special magnetic conductivity metal materials and high polymer engineering materials, and a plurality of noise reduction devices are filled between transformer shells.
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 the invention is not limited to the specific embodiments and examples, and that the invention is not limited to the specific embodiments and examples.
Claims (10)
1. A production process and a mounting mode of a noise reduction device of an oil-immersed power transformer are characterized in that: the production process and the installation mode of the oil-immersed power transformer noise reduction device are as follows:
the method comprises the following steps: selecting materials; selecting a special metal engineering material as a raw 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 noise reduction devices with different materials, different wire diameters and different densities can be made according to the requirements of customers;
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 knitting (knitting) noise reduction device.
Step seven: mounting a finished product; covering and absorbing transformer iron core and other noise sources; the transformer is arranged on the surface of a transformer shell (oil tank) and in the available space of the transformer shell (oil tank) by adopting a covering, shielding and embedding method.
2. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: in the sixth step, each roller of the loom, which is in contact with the warp, can flexibly rotate and has a smooth surface; the weft insertion of the loom adopts a carbon fiber sword belt, so that no metal powder is generated in the production process; the loom adopts totally closed operation, prevents the pollution of debris.
3. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: the automatic plate feeding device is provided with mechanical intelligent monitoring, and is used for avoiding the phenomena of plate body hard damage, crease marks, double lines, jumper wires, lack of warps and wefts, bulges, depressions, grooves, edges, sundries, oil stains, uneven tension and lotus leaf edges in the production process and improving the product quality.
4. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: in the sixth step, the warp needs to be ensured not to be higher than the plate surface, deform the holes and loose side by side; the smooth and edge-free reverse line is ensured, and the flatness of the noise reduction device is ensured.
5. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: in the fifth step, the weft passing and the weft shearing are both regulated by the servo motor through the computer, the weft shearing time is adjusted, the weft is better clamped on the rapier head, the broken weft is subjected to complementary weaving according to the weaving texture, but the net surface is not higher than the net surface after the repair, and the smoothness of the woven net surface is kept;
6. the production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: in step six, the finished net of the noise reduction device is a woven (knitted) net belt which is stiff and smooth in the longitudinal direction, can be bent freely in the transverse direction, and is multi-layer, reciprocating.
7. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to claim 1 are characterized in that: in the sixth step, the installation mode of the finished product net of the noise reduction device is convenient and quick; on the premise of not expanding the capacity of the transformer, the finished product net of the noise reduction device covers, absorbs and weakens the noise of the transformer in an internal and external combination mode.
8. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to any one of claims 1 to 7 are characterized in that: the special metal engineering material is a special magnetic metal material; the good magnetic material can isolate and quickly conduct the magnetic leakage generated by the transformer in the working process, reduce resonance and further reduce noise.
9. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to any one of claims 1 to 7 are characterized in that: the special metal engineering material is a polymer synthetic material; in the production process, 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 special metal engineering material; and ensuring that the temperature of the net body in the heat setting can reach and be fixed to the standard of the temperature required by the high molecular engineering material. The ductility of the noise reduction device is stabilized in the process, the noise reduction device produced by high molecular engineering materials is prevented from being contracted and deformed in the using process, and the structural stability of the noise reduction device is ensured.
10. The production process and the installation mode of the oil-immersed power transformer noise reduction device according to any one of claims 1 to 7 are characterized in that: the special metal engineering material simultaneously adopts two wires of a special magnetic metal material and a high molecular synthetic material; in the production process, 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 and fix the temperature standard required by the high molecular engineering material, and playing a role in stabilizing the structure; the weaving mode that two kinds of superior materials combined together both can be through reducing resonance, noise reduction, also can be through the refractive index difference of different media, noise reduction.
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