CN105469953B - A kind of power transformer - Google Patents
A kind of power transformer Download PDFInfo
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- CN105469953B CN105469953B CN201610020373.4A CN201610020373A CN105469953B CN 105469953 B CN105469953 B CN 105469953B CN 201610020373 A CN201610020373 A CN 201610020373A CN 105469953 B CN105469953 B CN 105469953B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/44—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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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
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/30—Applications used for thermoforming
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Insulating Of Coils (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Power transformer of the present invention, include the lower clamping piece of iron core, the upper clamping piece of clamping iron core upper end and clamping iron core lower end, the transformer coil of wound core, cross-over block is installed, the bottom of transformer coil is equipped with lower cross-over block at the top of transformer coil, the bottom of lower clamping piece is equipped with pedestal, the side of lower clamping piece is equipped with cooling blower, and the side of upper clamping piece is equipped with outlet copper bar；Transformer coil includes low pressure winding and the high-voltage winding that is looped around outside low pressure winding, and the outside of low pressure winding and high-voltage winding is enclosed with cast bed of material；The outside of iron core is enclosed with noise reduction heat dissipating layer；Noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer successively, the first silica gel layer of cloth, silica gel buffer layer, the second silica gel layer of cloth；Particle noise reduction layer is by the bentonite of 3000 mesh of granularity, aluminium nitride, the heat conductive silica gel of 6000 mesh of granularity, and in parts by weight 3:4:6 ratios form；Silica gel buffer layer is heat conductive silica gel.
Description
Technical field
The invention belongs to electrical equipment technical field, specially a kind of power transformer.
Background technology
Sound source there are three transformer noise is common, when iron core, second is that winding, third, cooler, i.e., unloaded, load and cooling
System causes the sum of noise.Iron core, which generates noise reasons, to be formed under electrical steel piece action of alternating magnetic field, it may occur that small change
It is magnetostriction to change, and magnetostriction makes iron core do periodic vibration with excitation frequency variation, iron core magnetostriction deformation and winding,
In fuel tank and magnetic screen caused by electromagnetic force.It is that electromagnetic force is generated in electric current winding that winding, which generates vibration cause, and stray field also can
Structural member is made to generate vibration.Electromagnetic noise producing cause is that Magnetic Field-Induced core-lamination stack vibrates generation noise along longitudinal direction, the vibration
Amplitude is related with magnetic flux density in core-lamination stack and iron core material magnetic energy, and little with load current relationship.Electromagnetic force (and
Vibration amplitude) it is directly proportional to current squaring, and transmitting sound power is directly proportional to vibration amplitude square.Iron core noise is that transformer is made an uproar
The main source of sound.Epoxy resin is a kind of already widely applied industrial chemicals, it is not only a kind of fire retardant, fire-retardant material
Material, and with superior electric property, gradually used later by electrician's manufacturing industry.Since Germany in 1964 manufactures platform ring of informing against
After oxygen cast-type does change, this technology develops quickly in Europe, and constantly releases various new patent manufacturing technologies, these skills
Art also constantly pushes the world to.Since the dry change manufacturing technology in China is mainly what is introduced from European countries such as Germany, so so far
In the dry-type transformer of whole nation production, the overwhelming majority is epoxy pouring type.
Patent CN102360835 discloses a kind of dry-type transformer poured with epoxy resin material, mainly by bisphenol-A type ring
Oxygen resin, aluminum nitride powder, quartz sand, mica powder, amine curing agent and endurable active toughener composition, utilize aluminum nitride powder and different grains
The quartz sand of diameter increases heat conductivility, has the advantages that heat-resist, thermal diffusivity is good, and coefficient of thermal expansion is suitable with copper material.Patent
CN102515626 discloses a kind of dry-type transformer high-thermal-conductivity epoxy resin castable, is substituted using high heat conduction inorganic particle
Common silicon powder improves the thermal conductivity factor of castable as filler.High heat conduction inorganic particle be alumina powder, aluminum nitride powder or
Boron nitride powder.The thermal conductivity factor of high-thermal-conductivity epoxy resin can reduce the Wen Sheng of transformer up to 1.1~1.3W/m K.Patent
201410678408.4 disclose low noise dry-type transformer, in transformer bottom mounting shock absorber so that transformer is being run
Generated vibrations are offset in the process, so as to eliminate noise, and are extended the service life of transformer, are reduced failure rate.
Invention content
Present invention aims to overcome that deficiency of the prior art, provides one kind with excellent anti-aging property and with low
The power transformer of noise.
Power transformer of the present invention, including iron core, the upper clamping piece of the clamping iron core upper end and the clamping iron core lower end
Lower clamping piece, around the transformer coil of the iron core, cross-over block, the change are installed at the top of the transformer coil
The bottom of transformer coil is equipped with lower cross-over block, and the bottom of the lower clamping piece is equipped with pedestal, the side peace of the lower clamping piece
Equipped with cooling blower, the side of the upper clamping piece is equipped with outlet copper bar；The transformer coil includes low pressure winding and surround
The outside of high-voltage winding outside the low pressure winding, the low pressure winding and high-voltage winding is enclosed with cast bed of material；It is described
The outside of iron core is enclosed with noise reduction heat dissipating layer；The noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer successively, the
One silica gel layer of cloth, silica gel buffer layer, the second silica gel layer of cloth；Bentonite of the particle noise reduction layer by 3000 mesh of granularity, granularity
Aluminium nitride, the heat conductive silica gel of 6000 mesh, in parts by weight 3:4:6 ratios form；The silica gel buffer layer is heat conductive silica gel.Wherein
Particle noise reduction layer by the bentonite of 3000 mesh of granularity, the aluminium nitride of 6000 mesh of granularity, DOW CORNING SE4420 heat conductive silica gels in proportion
It is uniformly mixed and cures, thickness 0.3cm；Silica gel buffer layer be DOW CORNING SE9184 heat conductive silica gels, thickness 0.3cm；First silicon
Carcass and the second silica gel layer of cloth select U.S.'s Bei Gesi Sil-Pad K10 silica gel cloth.
The cast bed of material of power transformer of the present invention, the low pressure winding and high-voltage winding, by the group of following parts by weight
Divide and be made：100~110 parts of E-51 epoxy resin, 4~5 parts of glycolmethacrylate phosphate, vinyl neodecanoate 2~
2.5 parts, 31~35 parts of methyl tetrahydrochysene phthalate anhydride, 5~6 parts of DMP-30 accelerating agents, 3~4 parts of tetraethylammonium bromide, diphenyl
3~4 parts of thiocarbamide, 14~16 parts of glycidyl neodecanoate, 6~8 parts of coco amine polyoxyethylene ether, 50 nanometers of average grain diameter carbon
4~5 parts of SiClx powder, 10~12 parts of the zirconium nitride powder of 800 nanometers of average grain diameter, 80 nanometers of average grain diameter magnesium oxide powder
4~5 parts.
The cast bed of material of power transformer of the present invention, the low pressure winding and high-voltage winding, is made by the following method：
A, 4.6 parts of the silicon carbide powder, flat of 7 parts of coco amine polyoxyethylene ether, 50 nanometers of average grain diameter is taken in parts by weight
11 parts of the zirconium nitride powder of equal 800 nanometers of grain size, 4 parts of the magnesium oxide powder of 80 nanometers of average grain diameter, are mixed evenly, then
It adds at 15 parts, 50 DEG C of glycidyl neodecanoate and is ultrasonically treated 40 minutes, obtain component A；
B, 105 parts of E-51 epoxy resin, 4.5 parts of glycolmethacrylate phosphate, neodecanoic acid are taken in parts by weight
2.2 parts of vinyl acetate, is uniformly mixed, and obtains component B；
C, 32 parts of methyl tetrahydrochysene phthalate anhydride, 5.6 parts of DMP-30 accelerating agents, tetraethylammonium bromide are taken in parts by weight
3.5 parts, 3.2 parts of rhenocure CA, are uniformly mixed, obtain component C；
D, it after mixing component B, component C, adds in component A and stirs evenly, be poured into the casting moulds of winding, then will
Casting moulds are placed in epoxide resin vacuum casting machine, are cured 1h at 89 DEG C, are cured 4h at 122 DEG C；Cure 2h at 139 DEG C, cool down
Afterwards remove casting moulds to get.
Castable made of the used in transformer coil special formulation of power transformer of the present invention is solid by vacuum pressure cast
Change is made, novel castable, employs different-grain diameter and the powder filler complex technique of type, while using the curing of optimization
Enhancing formula, has reached the unapproachable performance of single powder；Therefore with prominent heat conductivility and excellent mechanical property,
Anti-aging property.The ageing-resistant performance of transformer coil is improved, the service life of dry-type transformer greatly improved.Simultaneously originally
Invention is combined using the heat conductive silica gel and composite micro-powder of function admirable and the noise reduction heat dissipating layer that sound insulation heat conducting is had excellent performance, noise reduction is made
The setting of heat dissipating layer greatly reduces the noise of transformer core.
Description of the drawings
Fig. 1 is structure of power transformer schematic diagram of the present invention.
Fig. 2 is noise reduction heat dissipating layer structure diagram of the present invention.
Specific embodiment
The invention will be further described, but is not to be construed as to the scope of the present invention for example given below plan
Limitation, those skilled in the art still fall within this according to some the nonessential modifications and adaptations of the content of present invention to the present invention
The protection domain of invention.
Embodiment 1：As shown in Figure 1 and Figure 2, power transformer, upper clamping piece 2 and folder including iron core 1,1 upper end of clamping iron core
The lower clamping piece 3 of 1 lower end of iron core is held, the transformer coil 4 of wound core 1, the top of transformer coil 4 is equipped with cross-over block
5th, the bottom of transformer coil 4 is equipped with lower cross-over block 6, and the bottom of lower clamping piece 3 is equipped with pedestal 7, the side peace of lower clamping piece 3
Equipped with cooling blower 8, the side of upper clamping piece 2 is equipped with outlet copper bar 9；Transformer coil 4 includes low pressure winding and is looped around low
The outside of high-voltage winding outside pressure winding, low pressure winding and high-voltage winding is enclosed with cast bed of material；The outside of iron core 1 is enclosed with
Noise reduction heat dissipating layer；Noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer 10 successively, the first silica gel layer of cloth 11, silica gel
Buffer layer 12, the second silica gel layer of cloth 13；Particle noise reduction layer 10 by the bentonite of 3000 mesh of granularity, 6000 mesh of granularity aluminium nitride,
DOW CORNING SE4420 heat conductive silica gels in parts by weight 3:4:6 ratios, which are uniformly mixed, to be cured, thickness 0.3cm；Silica gel buffer layer
12 be DOW CORNING SE9184 heat conductive silica gels, thickness 0.3cm；First silica gel layer of cloth 11 and the second silica gel layer of cloth 13 select U.S. shellfish
Gus's Sil-Pad K10 silica gel cloth.
The cast bed of material of low pressure winding and high-voltage winding, is made by the following method：
A, coco amine polyoxyethylene ether is taken（AC-1203）7 kilograms, 4.6 kilograms of the silicon carbide powder of 50 nanometers of average grain diameter,
4 kilograms of the magnesium oxide powder of 11 kilograms of the zirconium nitride powder that 800 nanometers of average grain diameter, 80 nanometers of average grain diameter is mixed equal
It is even, then add in glycidyl neodecanoate（E-10P）It is ultrasonically treated 40 minutes at 15 kilograms, 50 DEG C, obtains component A；
B, Phoenix brand 105 kilograms of E-51 bisphenol-A liquid epoxy resins, glycolmethacrylate phosphate 4.5 are taken
Kilogram, 2.2 kilograms of vinyl neodecanoate, be uniformly mixed, obtain component B；
C, take 32 kilograms of methyl tetrahydrochysene phthalate anhydride, 5.6 kilograms of DMP-30 accelerating agents, 3.5 kilograms of tetraethylammonium bromide,
3.2 kilograms of rhenocure CA, is uniformly mixed, and obtains component C；
D, it after mixing component B, component C, adds in component A and stirs evenly, be poured into the casting moulds of winding, then will
Casting moulds are placed in epoxide resin vacuum casting machine, are cured 1h at 89 DEG C, are cured 4h at 122 DEG C；Cure 2h at 139 DEG C, cool down
Afterwards remove casting moulds to get.
Embodiment 2：Structure is such as embodiment 1, and difference is the cast bed of material of low pressure winding and high-voltage winding, by following
Method is made：
A, coco amine polyoxyethylene ether is taken（AC-1203）6 kilograms, it is 4 kilograms of the silicon carbide powder of 50 nanometers of average grain diameter, flat
10 kilograms of the zirconium nitride powder of equal 800 nanometers of grain size, 4 kilograms of the magnesium oxide powder of 80 nanometers of average grain diameter, are mixed evenly,
Then glycidyl neodecanoate is added in（E-10P）It is ultrasonically treated 40 minutes at 14 kilograms, 50 DEG C, obtains component A；
B, Phoenix brand E-51 bisphenol-A liquid epoxy resins double centner, glycolmethacrylate phosphate 4,000 are taken
Gram, 2 kilograms of vinyl neodecanoate, be uniformly mixed, obtain component B；
C, 31 kilograms of methyl tetrahydrochysene phthalate anhydride, 5 kilograms of DMP-30 accelerating agents, 3 kilograms of tetraethylammonium bromide, hexichol are taken
3 kilograms of base thiocarbamide, is uniformly mixed, and obtains component C；
D, it after mixing component B, component C, adds in component A and stirs evenly, be poured into the casting moulds of winding, then will
Casting moulds are placed in epoxide resin vacuum casting machine, are cured 1h at 89 DEG C, are cured 4h at 122 DEG C；Cure 2h at 139 DEG C, cool down
Afterwards remove casting moulds to get.
Embodiment 3：Structure is such as embodiment 1, and difference is the cast bed of material of low pressure winding and high-voltage winding, by following
Method is made：
A, coco amine polyoxyethylene ether is taken（AC-1203）8 kilograms, it is 5 kilograms of the silicon carbide powder of 50 nanometers of average grain diameter, flat
12 kilograms of the zirconium nitride powder of equal 800 nanometers of grain size, 5 kilograms of the magnesium oxide powder of 80 nanometers of average grain diameter, are mixed evenly,
Then glycidyl neodecanoate is added in（E-10P）It is ultrasonically treated 40 minutes at 16 kilograms, 50 DEG C, obtains component A；
B, Phoenix brand 110 kilograms of E-51 bisphenol-A liquid epoxy resins, glycolmethacrylate phosphate 5,000 are taken
Gram, 2.5 kilograms of vinyl neodecanoate, be uniformly mixed, obtain component B；
C, 35 kilograms of methyl tetrahydrochysene phthalate anhydride, 6 kilograms of DMP-30 accelerating agents, 4 kilograms of tetraethylammonium bromide, hexichol are taken
4 kilograms of base thiocarbamide, is uniformly mixed, and obtains component C；
D, it after mixing component B, component C, adds in component A and stirs evenly, be poured into the casting moulds of winding, then will
Casting moulds are placed in epoxide resin vacuum casting machine, are cured 1h at 89 DEG C, are cured 4h at 122 DEG C；Cure 2h at 139 DEG C, cool down
Afterwards remove casting moulds to get.
Transformer coil cast bed of material related experiment：Experiment is divided into five groups, respectively experimental group 1, the embodiment of the present invention 1；It is real
Test group 2, the silicon carbide powder of 50 nanometers of average grain diameter in the embodiment of the present invention 1,800 nanometers of average grain diameter zirconium nitride powder,
Replace with the magnesium oxide powder of 80 nanometers of the average grain diameter of equivalent weight；Experimental group 3, average grain diameter in the embodiment of the present invention 1
50 nanometers of silicon carbide powder, the magnesium oxide powder of 80 nanometers of average grain diameter, the average grain diameter 800 for replacing with equivalent weight are received
The zirconium nitride powder of rice；Experimental group 4, the zirconium nitride powder of 800 nanometers of average grain diameter, average grain diameter 80 in the embodiment of the present invention 1
The magnesium oxide powder of nanometer replaces with the silicon carbide powder of 50 nanometers of the average grain diameter of equivalent weight；Control group removes this hair
The silicon carbide powder of 50 nanometers of average grain diameter, the zirconium nitride powder of 800 nanometers of average grain diameter, average grain diameter 80 in bright embodiment 1
The magnesium oxide powder of nanometer.
Testing tool：Thermal conductivity：C mono- is produced using IN-TERNAT10NAC THERMAC INSTRUMENT companies of the U.S.
600 1 S types Conduction Coefficient Detector Basings are tested, and specimen size is the mm of the mm of 149 mm × 149 × 5；Thermal stability：Use the U.S.
6 type thermal gravimetric analyzer tests of Perkin-Elmer companies production Phyris TGA；200 DEG C of air 250h weight-loss ratios measure
Initial pyrolyzation temperature.Impact strength：Using X mechanical industry electrical material product quality supervisions inspection center production JJ-5 type letters
Branch beam type shock machine is tested according to GB/T 16420-1996.Difference group test datas the results are shown in Table 1, by 1 visible, table
The thermal conductivity of invention experimental group 1, hence it is evident that higher than other groups, while there is good heat ageing and mechanical property.
Noise testing：According to standard GB/T 7328-87, test method：Transformer is when rated condition is run, away from change
At depressor 1m its sound level level is measured with 2203 type precision sound level meters.With the equipment for power transmission and distribution Co., Ltd SCB11-500KVA that mutinies
Dry-type transformer is control group, and experimental group 1 uses the embodiment of the present invention 1, is made of the transformation of SCB11-500KVA dry-type transformers,
Experimental group 2 is SCB11-500KVA dry-type transformers, and iron core wraps up the DOW CORNING SE9184 heat conductive silica gels of 0.6cm thickness, outermost layer
Wrap up U.S.'s Bei Gesi Sil-Pad K10 silica gel cloth.By the visible experimental group 1 using the present invention of table 2, noise has apparent drop
It is low.
Claims (2)
1. a kind of power transformer, including under iron core, the upper clamping piece of the clamping iron core upper end and the clamping iron core lower end
Around the transformer coil of the iron core, cross-over block, the transformer are equipped at the top of the transformer coil for folder
The bottom of coil is equipped with lower cross-over block, and the bottom of the lower clamping piece is equipped with pedestal, and the side of the lower clamping piece is equipped with
Cooling blower, the side of the upper clamping piece are equipped with outlet copper bar；It is characterized in that the transformer coil includes low pressure winding
With the high-voltage winding being looped around outside the low pressure winding, the outside of the low pressure winding and high-voltage winding is enclosed with castable
Layer；The outside of the iron core is enclosed with noise reduction heat dissipating layer；The noise reduction heat dissipating layer includes four layers from the inside to surface, is particle drop successively
It makes an uproar layer, the first silica gel layer of cloth, silica gel buffer layer, the second silica gel layer of cloth；The particle noise reduction layer by 3000 mesh of granularity bentonite,
Aluminium nitride, the heat conductive silica gel of 6000 mesh of granularity, in parts by weight 3:4:6 ratios form；The silica gel buffer layer is heat conductive silica gel；
The cast bed of material of the low pressure winding and high-voltage winding is made of the component of following parts by weight：E-51 epoxy resin 100
~110 parts, 4~5 parts of glycolmethacrylate phosphate, 2~2.5 parts of vinyl neodecanoate, four hydrogen phthalate of methyl
31~35 parts of acid anhydride, 5~6 parts of DMP-30 accelerating agents, 3~4 parts of tetraethylammonium bromide, 3~4 parts of rhenocure CA, neodecanoic acid shrink
14~16 parts of glyceride, 6~8 parts of coco amine polyoxyethylene ether, 4~5 parts of the silicon carbide powder of 50 nanometers of average grain diameter, average grain
4~5 parts of the magnesium oxide powder of 10~12 parts of the zirconium nitride powder that 800 nanometers of diameter, 80 nanometers of average grain diameter.
2. power transformer according to claim 1, it is characterised in that the castable of the low pressure winding and high-voltage winding
Layer, is made by the following method：
A, 7 parts of coco amine polyoxyethylene ether, 4.6 parts of the silicon carbide powder of 50 nanometers of average grain diameter, average grain are taken in parts by weight
4 parts of the magnesium oxide powder of 11 parts of the zirconium nitride powder that 800 nanometers of diameter, 80 nanometers of average grain diameter, is mixed evenly, then adds in
It is ultrasonically treated 40 minutes at 15 parts, 50 DEG C of glycidyl neodecanoate, obtains component A；
B, 105 parts of E-51 epoxy resin, 4.5 parts of glycolmethacrylate phosphate, neodecanoic acid ethylene are taken in parts by weight
2.2 parts of ester, is uniformly mixed, and obtains component B；
C, take in parts by weight 32 parts of methyl tetrahydrochysene phthalate anhydride, 5.6 parts of DMP-30 accelerating agents, 3.5 parts of tetraethylammonium bromide,
3.2 parts of rhenocure CA, is uniformly mixed, and obtains component C；
D, it after mixing component B, component C, adds in component A and stirs evenly, be poured into the casting moulds of winding, then by casting moulds
It is placed in epoxide resin vacuum casting machine, cures 1h at 89 DEG C, cure 4h at 122 DEG C；Cure 2h at 139 DEG C, removed after cooling
Casting moulds to get.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565723.4A CN108806948B (en) | 2016-01-13 | 2016-01-13 | Castable layer, preparation method thereof and transformer with same |
| CN201610020373.4A CN105469953B (en) | 2016-01-13 | 2016-01-13 | A kind of power transformer |
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|---|---|---|---|
| CN201610020373.4A CN105469953B (en) | 2016-01-13 | 2016-01-13 | A kind of power transformer |
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| CN105469953B true CN105469953B (en) | 2018-07-03 |
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| CN201610020373.4A Active CN105469953B (en) | 2016-01-13 | 2016-01-13 | A kind of power transformer |
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| CN106057440B (en) * | 2016-07-21 | 2017-09-26 | 国网山西省电力公司电力科学研究院 | A kind of dry-type transformer winding overhang hot-spot cooling device |
| KR20220011112A (en) * | 2019-05-20 | 2022-01-27 | 미츠비시 가스 가가쿠 가부시키가이샤 | A resin composition, a prepreg, a resin sheet provided with a support, a metal foil-clad laminate, and a printed wiring board |
| CN113724964B (en) * | 2021-07-21 | 2023-11-03 | 华为数字能源技术有限公司 | Transformer and insulating packaging method thereof |
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| CN105469953A (en) | 2016-04-06 |
| CN108806948B (en) | 2020-11-27 |
| CN108806948A (en) | 2018-11-13 |
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Denomination of invention: A power transformer Effective date of registration: 20221020 Granted publication date: 20180703 Pledgee: CITIC Bank Limited by Share Ltd. Ji'nan branch Pledgor: SHANDONG TAILAI ELECTRIC CO.,LTD. Registration number: Y2022980019100 |