CN106486278A - A kind of Large Copacity single-circuit transformer and its manufacture method - Google Patents

A kind of Large Copacity single-circuit transformer and its manufacture method Download PDF

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Publication number
CN106486278A
CN106486278A CN201610713718.4A CN201610713718A CN106486278A CN 106486278 A CN106486278 A CN 106486278A CN 201610713718 A CN201610713718 A CN 201610713718A CN 106486278 A CN106486278 A CN 106486278A
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circuit transformer
large copacity
obtains
obtaining step
carbon fiber
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Inventor
何琳
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Ningbo Huazhong And Industrial Design Co Ltd
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Ningbo Huazhong And Industrial Design Co Ltd
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Priority to CN201610713718.4A priority Critical patent/CN106486278A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/624—Sol-gel processing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/02—Auto-transformers

Abstract

The invention discloses a kind of Large Copacity single-circuit transformer and its manufacture method, the Large Copacity single-circuit transformer includes skeleton, winding, magnetic core, radome, encapsulating material, it is characterised in that：Employ the copper cash with 1140 epoxy polyester insulated paint, special heat transfer insulating ceramics particle, specific heat vulcanized silicone rubber insulating materials, the average volume resistivities of insulating regions are not less than 1 × 1010Ω•cm；By obtaining excellent performance from square aluminum-nitride-based ceramic skeleton, standard silicon steel sheet magnetic core, epoxy resin, the copper cash with 1140 epoxy polyester insulated paint, heat vulcanized silicone rubber, special alumina ceramic grain；The single-circuit transformer capacity of the present invention is big, good insulating, long service life.

Description

A kind of Large Copacity single-circuit transformer and its manufacture method
Technical field
The present invention relates to field of electrical components, more particularly to a kind of Large Copacity single-circuit transformer and its manufacture method.
Background technology
The coupling of self coupling is the meaning of electromagnetic coupled, and common transformer is to transmit energy by former secondary coil electromagnetic coupled Amount, former secondary do not have the contact of direct electricity, and auto-transformer original secondary has the contact of direct electricity, and its low-voltage coil is exactly high pressure A part for coil.
In the Patents that has applied at home, not with regard to the prior art of Large Copacity single-circuit transformer.
Content of the invention
The present invention is intended to provide capacity is big, the Large Copacity single-circuit transformer of good insulating, long service life and its manufacturer Method.
To achieve these goals, the present invention is employed the following technical solutions：A kind of manufacturer of Large Copacity single-circuit transformer Method, comprises the following steps：
1) selection of each part and preparation
1. from the aluminum-nitride-based ceramic skeleton mated with day font magnetic core, selection standard is skeleton：Specific insulation >=2 ×1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >= 320Gpa, fracture toughness >=25Mpa；
2. magnetic core selection standard day font silicon steel sheet magnetic core；
3. radome is made using aluminium alloy, using full-closed structure；
4. encapsulating material adopts epoxy resin；
5. winding adopts the carbon fiber line with 1140 epoxy polyester insulated paint；
6. heavy insulation material selection heat vulcanized silicone rubber；
7. insulation heat-transfer filler selects special alumina ceramic grain；
2) preparation of the carbon fiber line with 1140 epoxy polyester insulated paint
1. ammonia, propane and acrylonitrile are synthesized by polyacrylonitrile resin by standard method；
2. the polyacrylonitrile resin for 1. obtaining step is dissolved in the intermixture of polyethylene glycol oxide and pure water, the intermixture Interior polyethylene glycol oxide is 2.5-3: 7 with the volume ratio of pure water, obtains spinning solution；
3. the spinning solution for 2. obtaining step is sprayed in coagulating bath by the spray orifice pressurization of aperture 0.05mm-0.08mm, Pressure limit is 1.5bar-2bar, shower nozzle and coagulation bath identity distance from being 10mm-15mm, acquisition polyacrylonitrile fibril；
4. the polyacrylonitrile fibril for 3. obtaining step is pre-oxidized by standard method, obtains pre-oxidized fibers；
5. the pre-oxidized fibers for 4. obtaining step carry out charing process, the charing process be divided into front charing process and after Charing process, 750 DEG C -800 DEG C of front charing process temperature, process time 5min-10min, 1500 DEG C of rear charing process temperature - 1600 DEG C, process time 5min-8min, that is, obtain stand-by carbon fiber；
6. the stand-by carbon fiber for 5. obtaining step is woven into pending carbon fiber line with 16 as one by standard method；
7. the pending carbon fiber line for 6. obtaining step infiltrates enough 1140 epoxy polyesters by standard method, dry and hard after obtain Carbon fiber line with 1140 epoxy polyester insulated paint needed for obtaining；
3) working process of alumina ceramic grain
1. Aluminum Chloride Hexahydrate is mixed with appropriate amount of purified water, stirs and impurity screening, allocate to acquisition mass percent The liquor alumini chloridi of 58%-65%；
2. the container for filling liquor alumini chloridi for 1. obtaining step carries out dither, then will uniformly delay after ammonia atomization Slowly it is passed through in the liquor alumini chloridi that 1. step is prepared, obtains pending solution；
3. step 2. after the completion of continue dither 30min-40min, the pending solution for then 2. obtaining step puts Under 25 DEG C -30 DEG C of isoperibol, and mechanical agitation 30min-40min, obtain preformed solution；
4. dilute hydrochloric acid solution is slowly added dropwise in the preformed solution that 3. step obtains and stirs, to the pH value 4.8- of solution 5.2, obtain original sol solutionses；
5. the original sol solutionses for 4. obtaining step are placed at a temperature of 70 DEG C -80 DEG C, and flow back 8h, obtains prefabricated sol solutionses；
6. the poly-vinyl alcohol solution of 3-5% concentration is slowly added in the prefabricated sol solutionses that 5. step obtains, and is obtained and is waited to locate Reason colloidal sol；
7. the pending colloidal sol for 6. step being obtained using absolute ethyl alcohol is rinsed repeatedly, to cleaning, is obtained stand-by molten Glue；
8. the stand-by colloidal sol for 7. obtaining step is placed at 480 DEG C -550 DEG C and carries out being fired to into particle, obtained Grain is required alumina ceramic grain；
4) processing of Large Copacity single-circuit transformer and assembling
1. magnetic core is positioned in aluminum-nitride-based ceramic skeleton, is fixed using epoxy resin；
2. the carbon fiber line of tape insulation paint is wrapped on aluminum-nitride-based ceramic skeleton by standard canoe, optimal voltage It is assigned as：Primary winding voltage: secondary winding voltage: tertiary winding voltage is 5: 3: 2；Armature winding, secondary windings, the 3rd Winding junction each other and other short dots apply envelope heat vulcanized silicone rubber, obtain insulating strength core part；
3. the insulating strength core part for 2. obtaining step adopts epoxy encapsulation；
4. whole Large Copacity single-circuit transformer is encapsulated using aluminium alloy radome, and in aluminium alloy radome internal clearance Filling full 3) in the alumina ceramic grain that 8. obtains of step, that is, obtain pending Large Copacity single-circuit transformer；
4) stabilization processes of Large Copacity single-circuit transformer
1. by 3) in the pending Large Copacity single-circuit transformer that 3. obtains of step be positioned in household freezer, temperature not higher than- 70 DEG C, 20min-30min is incubated, obtains cold treatment Large Copacity single-circuit transformer；
2. step 1. after the completion of, cold treatment Large Copacity single-circuit transformer that 1. step is obtained is put at room temperature, to its temperature Degree returns back to room temperature, is then placed in baking oven, rises to 100 DEG C -105 DEG C with the heating rate that is not higher than 2 DEG C/min, insulation 25min-30min, obtains thermal cycle Large Copacity single-circuit transformer；
3. the thermal cycle Large Copacity single-circuit transformer for 2. obtaining step is put at room temperature, returns back to room temperature to its temperature；
4. be repeated 1.～3. operation twice, that is, obtain needed for Large Copacity single-circuit transformer.
A kind of above-mentioned Large Copacity single-circuit transformer manufacture method manufacture Large Copacity single-circuit transformer, including skeleton, around Group, magnetic core, radome, encapsulating material；Skeleton is aluminium nitride ceramics skeleton；Winding adopts the carbon with 1140 epoxy polyester insulated paint Single；Between winding, binding site envelope applies heat vulcanized silicone rubber insulating materials；Fill out in the gap of radome and other parts It is filled with alumina ceramic grain；Radome employs aluminium alloy making, and full-closed structure is encapsulated.
The Large Copacity single-circuit transformer, the average volume resistivities of its insulating regions are not less than 1 × 1012Ω cm, shielding Rank is not less than T level, and power capacity is at least 10 times of conventional same volume single-circuit transformer.
Compared with prior art, the present invention has advantages below：In routine techniques, as short circuit current is big, become from lotus root Depressor capacity is limited to its insulated with material ability and heat-resisting ability, and the present invention has selected hot sulphur on the basis of routine techniques Change type silicon rubber, its specific insulation be not less than 2 × 1015 Ω cm, dielectric strength be not less than 200kV/cm, long when work temperature - 55～180 DEG C of scope of degree, can strengthen well limiting the insulating properties of single-circuit transformer volumetric properties, make working region not Easily because short circuit current is damaged, the possibility of single-circuit transformer dilatation is fundamentally increased；Special aluminum oxide has been selected to make pottery Porcelain particle, is studied as requested, and, less than after certain particle size, under equal conditions, its thermal impedance is little on the contrary for alumina ceramic grain In other materials, and with clean, long-life, characteristic pollution-free, easy to clean so that the single-circuit transformer of the present invention is in dilatation After will not fail because of overtemperature, while also playing dust-proof age inhibiting effect in routine duties, can lift the present invention's The service life of single-circuit transformer about 30%.
Description of the drawings
Fig. 1 is the structural representation of the present invention
In figure：Radome 1, alumina ceramic grain 2, ceramic skeleton 3, magnetic core 4, winding 5, heavy insulation material 6.
Specific embodiment
Embodiment 1：
A kind of Large Copacity single-circuit transformer, including skeleton, winding 5, magnetic core 4, radome 1, encapsulating material, wherein：Skeleton For aluminium nitride ceramics skeleton 3；Winding 5 adopts the carbon fiber line with 1140 epoxy polyester insulated paint；Apply in 5 binding site envelopes of winding Heat vulcanized silicone rubber insulating materials；Alumina ceramic grain 2 is filled with the gap of radome 1 and other parts；Shielding Cover 1 employs aluminium alloy making, and full-closed structure is encapsulated.
The manufacture method of the Large Copacity single-circuit transformer, comprises the following steps：
1) selection of each part and preparation
1. from the aluminum-nitride-based ceramic skeleton 3 mated with day font magnetic core 4, selection standard is skeleton：Specific insulation ≥2×1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >=320Gpa, fracture toughness >=25Mpa；
2. 4 selection standard day of magnetic core font silicon steel sheet magnetic core 4；
3. radome 1 is made using aluminium alloy, using full-closed structure；
4. encapsulating material adopts epoxy resin；
5. winding 5 adopts the carbon fiber line with 1140 epoxy polyester insulated paint；
6. heat vulcanized silicone rubber selected by heavy insulation material 6；
7. insulation heat-transfer filler selects special alumina ceramic grain 2；
2) preparation of the carbon fiber line with 1140 epoxy polyester insulated paint
1. ammonia, propane and acrylonitrile are synthesized by polyacrylonitrile resin by standard method；
2. the polyacrylonitrile resin for 1. obtaining step is dissolved in the intermixture of polyethylene glycol oxide and pure water, the intermixture Interior polyethylene glycol oxide is 2.5: 7 with the volume ratio of pure water, obtains spinning solution；
3. the spinning solution for 2. obtaining step is sprayed in coagulating bath by the spray orifice pressurization of aperture 0.05mm, pressure limit For 1.5bar, shower nozzle and coagulation bath identity distance from being 10mm, acquisition polyacrylonitrile fibril；
4. the polyacrylonitrile fibril for 3. obtaining step is pre-oxidized by standard method, obtains pre-oxidized fibers；
5. the pre-oxidized fibers for 4. obtaining step carry out charing process, the charing process be divided into front charing process and after Charing process, 750 DEG C of front charing process temperature, process time 5min, 1500 DEG C of rear charing process temperature, process time 5min, Stand-by carbon fiber is obtained；
6. the stand-by carbon fiber for 5. obtaining step is woven into pending carbon fiber line with 16 as one by standard method；
7. the pending carbon fiber line for 6. obtaining step infiltrates enough 1140 epoxy polyesters by standard method, dry and hard after obtain Carbon fiber line with 1140 epoxy polyester insulated paint needed for obtaining；
3) working process of alumina ceramic grain 2
1. Aluminum Chloride Hexahydrate is mixed with appropriate amount of purified water, stirs and impurity screening, allocate to acquisition mass percent 58% liquor alumini chloridi；
2. the container for filling liquor alumini chloridi for 1. obtaining step carries out dither, then will uniformly delay after ammonia atomization Slowly it is passed through in the liquor alumini chloridi that 1. step is prepared, obtains pending solution；
3. step 2. after the completion of continue dither 30min, the pending solution for then 2. obtaining step is placed in 25 DEG C Isoperibol under, and mechanical agitation 30min, obtain preformed solution；
4. dilute hydrochloric acid solution is slowly added dropwise in the preformed solution that 3. step obtains and stirs, to the pH value 4.8 of solution, obtain Obtain original sol solutionses；
5. the original sol solutionses for 4. obtaining step are placed at a temperature of 70 DEG C, and flow back 8h, obtains prefabricated sol solutionses；
6. the poly-vinyl alcohol solution of 3% concentration is slowly added in the prefabricated sol solutionses that 5. step obtains, and is obtained pending Colloidal sol；
7. the pending colloidal sol for 6. step being obtained using absolute ethyl alcohol is rinsed repeatedly, to cleaning, is obtained stand-by molten Glue；
8. the stand-by colloidal sol for 7. obtaining step is placed at 480 DEG C to carry out being fired to into particle, and the particle for being obtained is Required alumina ceramic grain 2；
4) processing of Large Copacity single-circuit transformer and assembling
1. magnetic core 4 is positioned in aluminum-nitride-based ceramic skeleton 3, is fixed using epoxy resin；
2. the carbon fiber line of tape insulation paint is wrapped on aluminum-nitride-based ceramic skeleton 3 by standard canoe；In primary Winding 5, secondary windings 5 junction each other and other short dots apply envelope heat vulcanized silicone rubber, obtain insulating strength core Subassembly；
3. the insulating strength core part for 2. obtaining step adopts epoxy encapsulation；
4. whole Large Copacity single-circuit transformer is encapsulated using aluminium alloy radome 1, and in 1 internal clearance of aluminium alloy radome Middle filling full 3) in the alumina ceramic grain 2 that 8. obtains of step, that is, obtain pending Large Copacity single-circuit transformer；
4) stabilization processes of Large Copacity single-circuit transformer
1. by 3) in the pending Large Copacity single-circuit transformer that 3. obtains of step be positioned in household freezer, -70 DEG C of temperature, protect Warm 20min, obtains cold treatment Large Copacity single-circuit transformer；
2. step 1. after the completion of, cold treatment Large Copacity single-circuit transformer that 1. step is obtained is put at room temperature, to its temperature Degree returns back to room temperature, is then placed in baking oven, rises to 100 DEG C with the heating rate of 2 DEG C/min, is incubated 25min, obtains thermal cycle Large Copacity single-circuit transformer；
3. the thermal cycle Large Copacity single-circuit transformer for 2. obtaining step is put at room temperature, returns back to room temperature to its temperature；
4. be repeated 1.～3. operation twice, that is, obtain needed for Large Copacity single-circuit transformer.
According to the Large Copacity single-circuit transformer sample of the present embodiment production, the average volume resistivities of its insulating regions are not low In 1 × 1013Ω cm, shields rank T level, and power capacity is at least 16 times of conventional same volume single-circuit transformer.
Embodiment 2：
A kind of Large Copacity single-circuit transformer, including skeleton, winding 5, magnetic core 4, radome 1, encapsulating material, wherein：Skeleton For aluminium nitride ceramics skeleton 3；Winding 5 adopts the carbon fiber line with 1140 epoxy polyester insulated paint；Apply in 5 binding site envelopes of winding Heat vulcanized silicone rubber insulating materials；Alumina ceramic grain 2 is filled with the gap of radome 1 and other parts；Shielding Cover 1 employs aluminium alloy making, and full-closed structure is encapsulated.
The manufacture method of the Large Copacity single-circuit transformer, comprises the following steps：
1) selection of each part and preparation
1. from the aluminum-nitride-based ceramic skeleton 3 mated with day font magnetic core 4, selection standard is skeleton：Specific insulation ≥2×1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >=320Gpa, fracture toughness >=25Mpa；
2. 4 selection standard day of magnetic core font silicon steel sheet magnetic core 4；
3. radome 1 is made using aluminium alloy, using full-closed structure；
4. encapsulating material adopts epoxy resin；
5. winding 5 adopts the carbon fiber line with 1140 epoxy polyester insulated paint；
6. heat vulcanized silicone rubber selected by heavy insulation material 6；
7. insulation heat-transfer filler selects special alumina ceramic grain 2；
2) preparation of the carbon fiber line with 1140 epoxy polyester insulated paint
1. ammonia, propane and acrylonitrile are synthesized by polyacrylonitrile resin by standard method；
2. the polyacrylonitrile resin for 1. obtaining step is dissolved in the intermixture of polyethylene glycol oxide and pure water, the intermixture Interior polyethylene glycol oxide is 3: 7 with the volume ratio of pure water, obtains spinning solution；
3. the spinning solution for 2. obtaining step is sprayed in coagulating bath by the spray orifice pressurization of aperture 0.08mm, pressure limit For 2bar, shower nozzle and coagulation bath identity distance from being 15mm, acquisition polyacrylonitrile fibril；
4. the polyacrylonitrile fibril for 3. obtaining step is pre-oxidized by standard method, obtains pre-oxidized fibers；
5. the pre-oxidized fibers for 4. obtaining step carry out charing process, the charing process be divided into front charing process and after Charing process, 800 DEG C of front charing process temperature, process time 10min, 1600 DEG C of rear charing process temperature, process time 8min, Stand-by carbon fiber is obtained；
6. the stand-by carbon fiber for 5. obtaining step is woven into pending carbon fiber line with 16 as one by standard method；
7. the pending carbon fiber line for 6. obtaining step infiltrates enough 1140 epoxy polyesters by standard method, dry and hard after obtain Carbon fiber line with 1140 epoxy polyester insulated paint needed for obtaining；
3) working process of alumina ceramic grain 2
1. Aluminum Chloride Hexahydrate is mixed with appropriate amount of purified water, stirs and impurity screening, allocate to acquisition mass percent 65% liquor alumini chloridi；
2. the container for filling liquor alumini chloridi for 1. obtaining step carries out dither, then will uniformly delay after ammonia atomization Slowly it is passed through in the liquor alumini chloridi that 1. step is prepared, obtains pending solution；
3. step 2. after the completion of continue dither 40min, the pending solution for then 2. obtaining step is placed in 30 DEG C Isoperibol under, and mechanical agitation 40min, obtain preformed solution；
4. dilute hydrochloric acid solution is slowly added dropwise in the preformed solution that 3. step obtains and stirs, to the pH value 5.2 of solution, obtain Obtain original sol solutionses；
5. the original sol solutionses for 4. obtaining step are placed at a temperature of 80 DEG C, and flow back 8h, obtains prefabricated sol solutionses；
6. the poly-vinyl alcohol solution of 5% concentration is slowly added in the prefabricated sol solutionses that 5. step obtains, and is obtained pending Colloidal sol；
7. the pending colloidal sol for 6. step being obtained using absolute ethyl alcohol is rinsed repeatedly, to cleaning, is obtained stand-by molten Glue；
8. the stand-by colloidal sol for 7. obtaining step is placed at 550 DEG C to carry out being fired to into particle, and the particle for being obtained is Required alumina ceramic grain 2；
4) processing of Large Copacity single-circuit transformer and assembling
1. magnetic core 4 is positioned in aluminum-nitride-based ceramic skeleton 3, is fixed using epoxy resin；
2. the carbon fiber line of tape insulation paint is wrapped on aluminum-nitride-based ceramic skeleton 3 by standard canoe；In primary Winding 5, secondary windings 5 junction each other and other short dots apply envelope heat vulcanized silicone rubber, obtain insulating strength core Subassembly；
3. the insulating strength core part for 2. obtaining step adopts epoxy encapsulation；
4. whole Large Copacity single-circuit transformer is encapsulated using aluminium alloy radome 1, and in 1 internal clearance of aluminium alloy radome Middle filling full 3) in the alumina ceramic grain 2 that 8. obtains of step, that is, obtain pending Large Copacity single-circuit transformer；
4) stabilization processes of Large Copacity single-circuit transformer
1. by 3) in the pending Large Copacity single-circuit transformer that 3. obtains of step be positioned in household freezer, -80 DEG C of temperature, protect Warm 30min, obtains cold treatment Large Copacity single-circuit transformer；
2. step 1. after the completion of, cold treatment Large Copacity single-circuit transformer that 1. step is obtained is put at room temperature, to its temperature Degree returns back to room temperature, is then placed in baking oven, rises to 105 DEG C with the heating rate of 1.5 DEG C/min, is incubated 30min, obtains heat and follows Ring Large Copacity single-circuit transformer；
3. the thermal cycle Large Copacity single-circuit transformer for 2. obtaining step is put at room temperature, returns back to room temperature to its temperature；
4. be repeated 1.～3. operation twice, that is, obtain needed for Large Copacity single-circuit transformer.
According to the Large Copacity single-circuit transformer sample of the present embodiment production, the average volume resistivities 5 of its insulating regions × 1013Ω cm, shields rank T level, and power capacity is 22 times of conventional same volume single-circuit transformer.
The foregoing description of the disclosed embodiments, only for enabling professional and technical personnel in the field to realize or using this Invention.Multiple modifications to these embodiments will be apparent for those skilled in the art, institute herein The General Principle of definition can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty The consistent most wide scope of point.

Claims (2)

1. a kind of manufacture method of Large Copacity single-circuit transformer, it is characterised in that comprise the following steps：
1）The selection of each part and preparation
1. skeleton is from the aluminum-nitride-based ceramic skeleton (3) mated with day font magnetic core (4)；
2. magnetic core (4) selection standard day font silicon steel sheet magnetic core (4)；
3. radome (1) is made using aluminium alloy, using full-closed structure；
4. encapsulating material adopts epoxy resin；
5. winding (5) adopts the carbon fiber line with 1140 epoxy polyester insulated paint；
6. heat vulcanized silicone rubber selected by heavy insulation material (6)；
7. insulation heat-transfer filler selects special alumina ceramic grain (2)；
2）The preparation of the carbon fiber line with 1140 epoxy polyester insulated paint
1. ammonia, propane and acrylonitrile are synthesized by polyacrylonitrile resin by standard method；
2. the polyacrylonitrile resin for 1. obtaining step is dissolved in the intermixture of polyethylene glycol oxide and pure water, the intermixture cohesion Ethylene oxide is 2.5-3 with the volume ratio of pure water：7, obtain spinning solution；
3. the spinning solution for 2. obtaining step is sprayed in coagulating bath by the spray orifice pressurization of aperture 0.05mm-0.08mm, pressure Scope is 1.5bar-2bar, shower nozzle and coagulation bath identity distance from being 10mm-15mm, acquisition polyacrylonitrile fibril；
4. the polyacrylonitrile fibril for 3. obtaining step is pre-oxidized by standard method, obtains pre-oxidized fibers；
5. the pre-oxidized fibers for 4. obtaining step carry out charing process, and the charing process is divided into front charing process and rear charing Process, 750 DEG C -800 DEG C of front charing process temperature, process time 5min -10min, 1500 DEG C -1600 of rear charing process temperature DEG C, process time 5min -8min, that is, obtain stand-by carbon fiber；
6. the stand-by carbon fiber for 5. obtaining step is woven into pending carbon fiber line with 16 as one by standard method；
7. the pending carbon fiber line for 6. obtaining step infiltrates enough 1140 epoxy polyesters, dry and hard rear acquisition institute by standard method Need to be with the carbon fiber line of 1140 epoxy polyester insulated paint；
3）The working process of alumina ceramic grain (2)
1. Aluminum Chloride Hexahydrate is mixed with appropriate amount of purified water, stirs and impurity screening, allocate to acquisition mass percent 58%-65% Liquor alumini chloridi；
2. the container for filling liquor alumini chloridi for 1. obtaining step carries out dither, then by after ammonia atomization uniform lentamente It is passed through in the liquor alumini chloridi that 1. step is prepared, obtains pending solution；
3. step 2. after the completion of continue dither 30min-40min, the pending solution for then 2. obtaining step is placed in 25 Under DEG C -30 DEG C of isoperibol, and mechanical agitation 30min-40min, obtain preformed solution；
4. dilute hydrochloric acid solution is slowly added dropwise in the preformed solution that 3. step obtains and stirs, to the pH value 4.8-5.2 of solution, obtain Obtain original sol solutionses；
5. the original sol solutionses for 4. obtaining step are placed at a temperature of 70 DEG C -80 DEG C, and flow back 8h, obtains prefabricated sol solutionses；
6. the poly-vinyl alcohol solution of 3-5% concentration is slowly added in the prefabricated sol solutionses that 5. step obtains, and is obtained pending molten Glue；
7. the pending colloidal sol for 6. step being obtained using absolute ethyl alcohol is rinsed repeatedly, to cleaning, obtains stand-by colloidal sol；
8. the stand-by colloidal sol for 7. obtaining step is placed at 480 DEG C -550 DEG C and carries out being fired to into particle, and the particle for being obtained is i.e. For needed for alumina ceramic grain (2)；
4）The processing of Large Copacity single-circuit transformer and assembling
1. magnetic core (4) is positioned in aluminum-nitride-based ceramic skeleton (3), is fixed using epoxy resin；
2. the carbon fiber line of tape insulation paint is wrapped on aluminum-nitride-based ceramic skeleton (3) by standard canoe, primary around Group (5), secondary windings (5) junction each other applies envelope heat vulcanized silicone rubber, obtains insulating strength core part；
3. the insulating strength core part for 2. obtaining step adopts epoxy encapsulation；
4. whole Large Copacity single-circuit transformer is encapsulated using aluminium alloy radome (1), and in aluminium alloy radome (1) internal clearance Middle filling full 3）The alumina ceramic grain (2) that 8. middle step obtains, that is, obtain pending Large Copacity single-circuit transformer；
4）The stabilization processes of Large Copacity single-circuit transformer
1. by 3）The pending Large Copacity single-circuit transformer that 3. middle step obtains is positioned in household freezer, not higher than -70 DEG C of temperature, Insulation 20min-30min, obtains cold treatment Large Copacity single-circuit transformer；
2. step 1. after the completion of, the cold treatment Large Copacity single-circuit transformer that 1. step is obtained is put at room temperature, returns to its temperature Multiple be then placed in baking oven to room temperature, rise to 100 DEG C -105 DEG C with the heating rate that is not higher than 2 DEG C/min, be incubated 25min- 30min, obtains thermal cycle Large Copacity single-circuit transformer；
3. the thermal cycle Large Copacity single-circuit transformer for 2. obtaining step is put at room temperature, returns back to room temperature to its temperature；
4. be repeated 1. ~ 3. operation twice, that is, obtain needed for Large Copacity single-circuit transformer.
2. the Large Copacity single-circuit transformer that manufacture method is manufactured according to claim 1, including skeleton, winding, magnetic core, shielding Cover, encapsulating material, it is characterised in that：Skeleton is aluminium nitride ceramics skeleton (3)；Winding (5) is using band 1140 epoxy polyesters insulation The carbon fiber line of paint；Between winding (5), binding site envelope applies heat vulcanized silicone rubber insulating materials；In radome (1) and other portions Alumina ceramic grain (2) is filled with the gap of part；Radome (1) employs aluminium alloy making, and full-closed structure is encapsulated.
CN201610713718.4A 2016-08-24 2016-08-24 A kind of Large Copacity single-circuit transformer and its manufacture method Pending CN106486278A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109494065A (en) * 2018-11-09 2019-03-19 福州盛世凌云环保科技有限公司 The anticorrosive long-life Telecommunication Transformers of high stable and its manufacturing method

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CN1565972A (en) * 2003-06-30 2005-01-19 王海舟 Technological process for preparing superfine aluminium oxide using sol gel method
CN1986923A (en) * 2006-12-07 2007-06-27 山东大学 New two-step water phase suspending process for preparing polyacrylonitrile fibril for carbon fiber
CN102568808A (en) * 2012-01-19 2012-07-11 邹光荣 Cold-heat circulation aging treatment method for increasing magnetic stability of permanent magnets
CN103204527A (en) * 2013-03-22 2013-07-17 清华大学深圳研究生院 Gamma-alumina particles and method for manufacturing same
CN106169364A (en) * 2016-07-28 2016-11-30 郑洪华 A kind of three winding single-circuit transformer and manufacture method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2173986Y (en) * 1993-09-14 1994-08-10 余绍江 Light energy-saving neon lamp transformer
CN1565972A (en) * 2003-06-30 2005-01-19 王海舟 Technological process for preparing superfine aluminium oxide using sol gel method
CN1986923A (en) * 2006-12-07 2007-06-27 山东大学 New two-step water phase suspending process for preparing polyacrylonitrile fibril for carbon fiber
CN102568808A (en) * 2012-01-19 2012-07-11 邹光荣 Cold-heat circulation aging treatment method for increasing magnetic stability of permanent magnets
CN103204527A (en) * 2013-03-22 2013-07-17 清华大学深圳研究生院 Gamma-alumina particles and method for manufacturing same
CN106169364A (en) * 2016-07-28 2016-11-30 郑洪华 A kind of three winding single-circuit transformer and manufacture method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109494065A (en) * 2018-11-09 2019-03-19 福州盛世凌云环保科技有限公司 The anticorrosive long-life Telecommunication Transformers of high stable and its manufacturing method

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