CN110746842A - Insulation method for motor stator of transformer oil pump of electric locomotive powered by frequency converter - Google Patents
Insulation method for motor stator of transformer oil pump of electric locomotive powered by frequency converter Download PDFInfo
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- CN110746842A CN110746842A CN201910979722.9A CN201910979722A CN110746842A CN 110746842 A CN110746842 A CN 110746842A CN 201910979722 A CN201910979722 A CN 201910979722A CN 110746842 A CN110746842 A CN 110746842A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses an insulation method for a transformer oil pump motor stator of an electric locomotive supplied with power by a frequency converter, which comprises the following steps of S1: the invention relates to the technical field of motor stator insulation, and specifically relates to a composite material containing 20-30 parts of phenolic resin, 1-3 parts of cobalt iso-octoate, 15-25 parts of organic silicon resin, 10-14 parts of polyetherimide, 9-11 parts of carbon black, 6-8 parts of ceramic hollow microspheres, 2-4 parts of diluent, 1-3 parts of toughening agent and the balance of purified water. According to the insulation method for the motor stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter, phenolic resin, organic silicon resin and carbon black are selected, high-strength insulation materials are adopted to perform insulation treatment on motor electrons, polyetherimide and ceramic hollow microspheres are adopted, the materials have insulation performance and simultaneously provide good heat insulation performance, and a toughening agent, cobalt isooctanoate and a diluent are matched to enhance the affinity among molecules, so that the impact of electromagnetic vibration and mechanical vibration and the aging of heating conditions are effectively borne, and the insulation performance of the motor electrons is greatly improved.
Description
Technical Field
The invention relates to the technical field of motor stator insulation, in particular to a method for insulating a motor stator of an oil pump of a transformer of an electric locomotive powered by a frequency converter.
Background
The oil pump motor is a modified specific motor for driving an oil pump, the oil pump motor comprises a motor main body, a front end cover and an output transmission shaft, a stepped hole is formed in the front end cover, the output transmission is retracted into the front end cover and is a hollow shaft, the hole diameter of the shaft hole is matched with the outer diameter of an input transmission shaft of the oil pump, and a key groove is formed in a shaft head of the output transmission shaft. The oil pump is divided into high pressure and low pressure, namely, the high-pressure plunger oil pump drives the plunger to reciprocate up and down in the plunger sleeve by a cam shaft in the pump to generate high-pressure oil to be supplied to the oil injector. The cylindrical surface of the plunger is provided with a chute which is communicated with a straight groove, and the axial straight groove is communicated with the plunger top. Some plungers have no straight slot, and the oil hole drilled on the top of the plunger is communicated with the oblique slot to form a pump cavity. Two oil inlet holes are drilled on the upper part of the plunger sleeve, and when the plunger descends to the position that the two oil inlet holes are plugged out of the top surface of the plunger, low-pressure oil enters the pump cavity from the oil inlet holes.
Although the coil and other parts of the stator of the oil pump motor of the transformer of the electric locomotive powered by the frequency converter have certain insulating capacity when the stator is manufactured, the insulating paint material is simple, the insulating performance is poor, the stator is very weak and easy to damage, the insulating material needs to bear the impact of electromagnetic vibration and mechanical vibration and the aging of heating conditions, the service life of the insulating paint is greatly shortened, and the insulating paint is easy to break down and even fall off.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an insulation method for a transformer oil pump motor stator of an electric locomotive powered by a frequency converter, which solves the problems that the wrapped insulation paint material of the transformer oil pump motor stator of the electric locomotive powered by the frequency converter is simple, the insulation performance is poor, and the insulation paint falls off when the impact of electromagnetic vibration and mechanical vibration and the aging of heating conditions occur.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a stator insulation method for an oil pump motor of a transformer of an electric locomotive powered by a frequency converter comprises the following steps:
s1, selecting materials: selecting 20-30 parts of phenolic resin, 1-3 parts of cobalt iso-octoate, 15-25 parts of organic silicon resin, 10-14 parts of polyetherimide, 9-11 parts of carbon black, 6-8 parts of ceramic hollow microspheres, 2-4 parts of diluent, 1-3 parts of toughening agent and the balance of purified water;
s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution;
s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s;
s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S;
s6, drying: and after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, performing ventilation treatment, and drying the paint dipped motor stator.
Preferably, the raw materials comprise the following components: 20 parts of phenolic resin, 1 part of cobalt iso-octoate, 15 parts of organic silicon resin, 10 parts of polyetherimide, 9 parts of carbon black, 6 parts of ceramic hollow microspheres, 2 parts of diluent, 1 part of toughening agent and the balance of purified water.
Preferably, the raw materials comprise the following components: 25 parts of phenolic resin, 2 parts of cobalt iso-octoate, 20 parts of organic silicon resin, 12 parts of polyetherimide, 10 parts of carbon black, 7 parts of ceramic hollow microspheres, 3 parts of diluent, 2 parts of toughening agent and the balance of purified water.
Preferably, the raw materials comprise the following components: 30 parts of phenolic resin, 3 parts of cobalt iso-octoate, 25 parts of organic silicon resin, 14 parts of polyetherimide, 11 parts of carbon black, 8 parts of ceramic hollow microspheres, 4 parts of diluent, 3 parts of toughening agent and the balance of purified water.
Preferably, the diluent is one or a mixture of two of banana oil or pentaerythritol triacrylate.
Preferably, the toughening agent is one or a mixture of two of nano calcium carbonate and nano titanium dioxide.
Preferably, the stirring time in the S2 is 5-10min, and the rotating speed is controlled at 80-100 r/min.
Preferably, the stirring time in the S3 is 2-3min, and the rotating speed is controlled at 50-60 r/min.
(III) advantageous effects
The invention provides an insulation method for a transformer oil pump motor stator of an electric locomotive supplied with power by a frequency converter. Compared with the prior art, the method has the following beneficial effects:
(1) the insulation method of the stator of the oil pump motor of the electric locomotive transformer supplied with power by the frequency converter comprises the following steps of S1: selecting 20-30 parts of phenolic resin, 1-3 parts of cobalt iso-octoate, 15-25 parts of organic silicon resin, 10-14 parts of polyetherimide, 9-11 parts of carbon black, 6-8 parts of ceramic hollow microspheres, 2-4 parts of diluent, 1-3 parts of toughening agent and the balance of purified water; s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution; s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s; s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S; s6, drying: after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, carrying out ventilation treatment, drying the paint dipped motor stator, by selecting phenolic resin, organic silicon resin and carbon black, adopting high-strength insulating material to insulate the motor electrons, having high-frequency electric breakdown resistance and high-strength reticular molecules with high chemical stability, then adopting polyetherimide and ceramic hollow microspheres, the material has insulating property and simultaneously provides good heat-insulating property, and the affinity among molecules is enhanced by matching with a toughening agent, cobalt isooctanoate and a diluent, and the catalyst catalyzes the intermolecular rapid fusion, effectively bears the impact of electromagnetic vibration and mechanical vibration and the aging of heating conditions, greatly improves the insulating property of motor electronics, and prolongs the service life of the motor electronics.
Drawings
FIG. 1 is a statistical table of comparative experimental data according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides three technical solutions: a stator insulation method for an oil pump motor of an electric locomotive transformer powered by a frequency converter specifically comprises the following embodiments:
example 1
S1, selecting materials: selecting 20 parts of phenolic resin, 1 part of cobalt iso-octoate, 15 parts of organic silicon resin, 10 parts of polyetherimide, 9 parts of carbon black, 6 parts of ceramic hollow microspheres, 2 parts of diluent, 1 part of toughening agent and the balance of purified water;
s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution;
s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s;
s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S;
s6, drying: and after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, performing ventilation treatment, and drying the paint dipped motor stator.
Example 2
S1, selecting materials: selecting 25 parts of phenolic resin, 2 parts of cobalt iso-octoate, 20 parts of organic silicon resin, 12 parts of polyetherimide, 10 parts of carbon black, 7 parts of ceramic hollow microspheres, 3 parts of diluent, 2 parts of toughening agent and the balance of purified water;
s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution;
s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s;
s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S;
s6, drying: and after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, performing ventilation treatment, and drying the paint dipped motor stator.
Example 3
S1, selecting materials: selecting 30 parts of phenolic resin, 3 parts of cobalt iso-octoate, 25 parts of organic silicon resin, 14 parts of polyetherimide, 11 parts of carbon black, 8 parts of ceramic hollow microspheres, 4 parts of diluent, 3 parts of toughening agent and the balance of purified water;
s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution;
s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s;
s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S;
s6, drying: and after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, performing ventilation treatment, and drying the paint dipped motor stator.
Comparative experiment
A certain manufacturer of the insulating paint for the motor stator of the oil pump of the transformer of the electric locomotive respectively selects the insulating paint in the embodiments S1-S3 to perform a comparison test, after the paint is dripped on the motor stator of the oil pump of the transformer of the electric locomotive in the embodiment 1, the insulating property is 9.2, the heat insulation property is 8.1 and the impact resistance is 7.6, after the paint is dripped on the motor stator of the oil pump of the transformer of the electric locomotive in the embodiment 2, the insulating property is 9.6, the heat insulation property is 8.5 and the impact resistance is 8.2, after the paint is dripped on the motor stator of the oil pump of the transformer of the electric locomotive in the embodiment 3, the insulating property is 9.3, the heat insulation property is 8.1 and the impact resistance is 7.8, and after the paint is dripped on the motor stator of the oil pump of the transformer of the electric locomotive in the.
As can be seen from fig. 1, the raw material ratio adopted in example 2 achieves the best effect, and the prepared stator of the oil pump motor of the electric locomotive transformer has the best insulation performance, the best heat insulation performance and the best impact resistance performance, so that the raw materials are matched in the best ratio; both other effects are possible.
In summary, by selecting phenolic resin, organic silicon resin and carbon black, a high-strength insulating material is adopted to perform insulating treatment on motor electrons, the material has reticular molecules with high-frequency electric breakdown resistance and high strength, the chemical stability is high, then polyetherimide and ceramic cenospheres are adopted, the material has insulating property and simultaneously provides good heat-insulating property, a toughening agent, cobalt iso-octoate and a diluent are matched to enhance the affinity among the molecules, and catalyze the rapid fusion among the molecules, so that the impact of electromagnetic vibration and mechanical vibration and the aging of heating conditions are effectively borne, the insulating property of the motor electrons is greatly improved, and the service life of the motor electrons is prolonged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for insulating a stator of an oil pump motor of a transformer of an electric locomotive powered by a frequency converter is characterized by comprising the following steps: the method comprises the following steps:
s1, selecting materials: selecting 20-30 parts of phenolic resin, 1-3 parts of cobalt iso-octoate, 15-25 parts of organic silicon resin, 10-14 parts of polyetherimide, 9-11 parts of carbon black, 6-8 parts of ceramic hollow microspheres, 2-4 parts of diluent, 1-3 parts of toughening agent and the balance of purified water;
s2, material configuration: sequentially adding phenolic resin, organic silicon resin, polyetherimide, carbon black and ceramic hollow microspheres into a heating stirring pot filled with purified water, and fully stirring the materials at the temperature of 70-90 ℃ to prepare a mixed solution;
s3, forming of insulating varnish: sequentially adding cobalt iso-octoate, a diluent and a toughening agent into a heating stirring pot in S2, continuously stirring, controlling the temperature at 50-60 ℃, cooling, and then, insulating paint solution and storing in a sealed container;
s4, mounting and preheating: adding the prepared insulating paint into a paint container of a paint dipping furnace, then installing a motor stator on a mechanical claw of the paint dipping furnace, starting the mechanical claw to rotate, preheating the motor stator at the moment, keeping the temperature between 120 and 150 ℃, and preserving the heat for 1min +/-10 s;
s5, dropping paint: when the temperature in the paint dipping furnace in S3 is cooled to 50-70 ℃, dripping insulating paint solution to the coil part of the rotating motor stator to be painted through a paint dripping pipe of the paint dipping furnace, wherein the paint dripping time is 1.2min +/-10S;
s6, drying: and after finishing the paint dripping of the motor stator in the S4, heating the paint dipping furnace at the moment, keeping the temperature between 100 and 120 ℃, keeping the temperature for 3min +/-10S, performing ventilation treatment, and drying the paint dipped motor stator.
2. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: the raw materials comprise the following components: 20 parts of phenolic resin, 1 part of cobalt iso-octoate, 15 parts of organic silicon resin, 10 parts of polyetherimide, 9 parts of carbon black, 6 parts of ceramic hollow microspheres, 2 parts of diluent, 1 part of toughening agent and the balance of purified water.
3. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: the raw materials comprise the following components: 25 parts of phenolic resin, 2 parts of cobalt iso-octoate, 20 parts of organic silicon resin, 12 parts of polyetherimide, 10 parts of carbon black, 7 parts of ceramic hollow microspheres, 3 parts of diluent, 2 parts of toughening agent and the balance of purified water.
4. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: the raw materials comprise the following components: 30 parts of phenolic resin, 3 parts of cobalt iso-octoate, 25 parts of organic silicon resin, 14 parts of polyetherimide, 11 parts of carbon black, 8 parts of ceramic hollow microspheres, 4 parts of diluent, 3 parts of toughening agent and the balance of purified water.
5. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: the diluent is one or a mixture of two of banana oil or pentaerythritol triacrylate.
6. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: the toughening agent is one or a mixture of two of nano calcium carbonate or nano titanium dioxide.
7. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: and the stirring time in the S2 is 5-10min, and the rotating speed is controlled at 80-100 r/min.
8. The method for insulating the stator of the transformer oil pump motor of the electric locomotive powered by the frequency converter according to claim 1, wherein the method comprises the following steps: and the stirring time in the S3 is 2-3min, and the rotating speed is controlled at 50-60 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910979722.9A CN110746842A (en) | 2019-10-15 | 2019-10-15 | Insulation method for motor stator of transformer oil pump of electric locomotive powered by frequency converter |
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| CN201910979722.9A CN110746842A (en) | 2019-10-15 | 2019-10-15 | Insulation method for motor stator of transformer oil pump of electric locomotive powered by frequency converter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090202806A1 (en) * | 2008-02-11 | 2009-08-13 | Takeo Ebina | Film made from denatured clay |
| CN102570743A (en) * | 2011-12-13 | 2012-07-11 | 哈尔滨东安发动机（集团）有限公司 | Insulating method for motor stator |
| CN102676112A (en) * | 2012-06-08 | 2012-09-19 | 黑龙江省科学院石油化学研究院 | Low-temperature curing cyanate ester adhesive and preparation method thereof |
| CN104152042A (en) * | 2014-08-28 | 2014-11-19 | 广西梧州龙鱼漆业有限公司 | Surface insulation paint |
| US20150291740A1 (en) * | 2014-04-09 | 2015-10-15 | Eternal Materials Co., Ltd. | Flame-retardant polyester |
| CN109679312A (en) * | 2018-12-07 | 2019-04-26 | 歌尔股份有限公司 | A kind of polymer composites |
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2019
- 2019-10-15 CN CN201910979722.9A patent/CN110746842A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090202806A1 (en) * | 2008-02-11 | 2009-08-13 | Takeo Ebina | Film made from denatured clay |
| CN102570743A (en) * | 2011-12-13 | 2012-07-11 | 哈尔滨东安发动机（集团）有限公司 | Insulating method for motor stator |
| CN102676112A (en) * | 2012-06-08 | 2012-09-19 | 黑龙江省科学院石油化学研究院 | Low-temperature curing cyanate ester adhesive and preparation method thereof |
| US20150291740A1 (en) * | 2014-04-09 | 2015-10-15 | Eternal Materials Co., Ltd. | Flame-retardant polyester |
| CN104152042A (en) * | 2014-08-28 | 2014-11-19 | 广西梧州龙鱼漆业有限公司 | Surface insulation paint |
| CN109679312A (en) * | 2018-12-07 | 2019-04-26 | 歌尔股份有限公司 | A kind of polymer composites |
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