CN111863421A - Waterproof treatment method for transformer - Google Patents
Waterproof treatment method for transformer Download PDFInfo
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- CN111863421A CN111863421A CN202010757719.5A CN202010757719A CN111863421A CN 111863421 A CN111863421 A CN 111863421A CN 202010757719 A CN202010757719 A CN 202010757719A CN 111863421 A CN111863421 A CN 111863421A
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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
- H01F41/005—Impregnating or encapsulating
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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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/04—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 for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a waterproof treatment method for a transformer, which comprises the following steps: heating the transformer main body, carrying out first vacuum paint dipping on the transformer main body, and keeping for a period of time under vacuum; then keeping for a period of time under positive pressure, and baking the transformer at high temperature; cooling the transformer main body to a low temperature, performing secondary vacuum paint dipping on the transformer main body, and keeping for a period of time under vacuum; then keeping for a period of time under positive pressure, and baking the transformer at high temperature; cooling the transformer main body to a low temperature, carrying out third vacuum paint dipping on the transformer main body, and keeping for a period of time under vacuum; then keeping for a period of time under positive pressure, and baking the transformer at high temperature. The transformer is subjected to three times of vacuum paint dipping, positive pressure maintaining and paint baking at high temperature, and the transformer treated by the method is high in waterproofness and strong in outer surface insulativity, the service life of the transformer is greatly prolonged, and potential safety hazards are reduced.
Description
Technical Field
The invention relates to the field of waterproofing, in particular to a waterproof treatment method for a transformer.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction.
The transformer is placed outdoors, namely the transformer is used in the weather of wind, rain and sun exposure all the year round; the existing transformer generally has no waterproof function, and even if the existing transformer is subjected to waterproof treatment, water can enter the transformer in heavy rain; pure water is not conductive, but various oxides are generated by continuous oxidation of the transformer in the outdoor prevention process, the oxides are mixed with water to generate conductive solution, once the water solution soaks the lead in the transformer, short circuit between the lead and the lead can be caused, electric leakage or high-temperature ignition is caused, and great potential safety hazard is caused to the public.
Disclosure of Invention
In view of the above, the waterproof treatment method for the transformer is applied to the transformer, and the treated transformer has high waterproof property and strong outer surface insulation property.
A waterproof treatment method for a transformer comprises the following steps:
s1, heating the transformer main body to 45-50 ℃, performing first vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10-20min at a vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
s2, when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 10-20min at the vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
s3, when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10-20min at the vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and then baking the transformer at the temperature of 120-140 ℃ for 500 min.
Preferably, the method also comprises the step of carrying out waterproof treatment on the head end and the tail end of the outgoing line of the transformer, and the method comprises the following steps:
seamlessly winding and wrapping the outgoing line of the transformer by using the polyamide adhesive tape;
attaching a silica gel tape to the outer surface of the polyamide adhesive tape;
attaching Nomick insulating paper to the outer surface of the silica gel tape;
and then the glass fiber is attached to the outer surface of the Nomick insulating paper.
Preferably, the waterproof processing method for the head and the tail ends of the outgoing line of the transformer comprises the following steps:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner;
attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape;
attaching the folded Nomick insulating paper to the outer surface of the silica gel belt;
and then the folded glass filaments are attached to the outer surface of the nomike insulating paper.
Preferably, the nomick insulation paper size is 0.08 x 15 mm.
Preferably, the glass filaments are alkali-free and wax-free glass filaments.
Preferably, before the step S1, the method further includes removing moisture, and the removing moisture method includes:
the transformer is placed at the temperature of 100-120 ℃, and the dehumidifying time is 110-130 min.
Preferably, the S1 is specifically:
heating the transformer main body to 48 ℃, and performing first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 400MPa, and keeping for 15 min; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 240min at the temperature of 135 ℃.
Preferably, the S2 is specifically:
when the temperature of the transformer main body is reduced to 45 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 240min at the temperature of 135 ℃.
Preferably, the S3 is specifically:
when the temperature of the transformer main body is reduced to 50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 480min at the temperature of 135 ℃.
Preferably, the paint is a three-proofing paint.
The invention has the beneficial effects that: the waterproof treatment method is applied to the transformer, the transformer is subjected to three times of vacuum paint dipping, then positive pressure maintaining and paint baking at high temperature, the transformer treated by the method is high in waterproofness and strong in outer surface insulativity, the service life of the transformer is greatly prolonged, and potential safety hazards are reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
seamlessly winding and wrapping the outgoing line of the transformer by using the polyamide adhesive tape; attaching a silica gel tape to the outer surface of the polyamide adhesive tape; attaching Nomick insulating paper to the outer surface of the silica gel tape; and then the glass fiber is attached to the outer surface of the Nomick insulating paper.
The transformer main body is waterproof:
the transformer is placed at the temperature of 100-;
heating the transformer main body to 45-50 ℃, and carrying out first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 300-500MPa, and keeping for 10-20 min; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 10-20min when the vacuum degree is 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10-20min at the vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and then baking the transformer at the temperature of 120-140 ℃ for 500 min.
The waterproof treatment method is applied to the transformer, the transformer is subjected to three times of vacuum paint dipping, then positive pressure maintaining and paint baking at high temperature, the transformer treated by the method is high in waterproofness and strong in outer surface insulativity, the service life of the transformer is greatly prolonged, and potential safety hazards are reduced.
Detailed description of the preferred embodiment 1
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner; attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape; attaching the folded Nomick insulating paper to the outer surface of the silica gel belt; and then the folded glass filaments are attached to the outer surface of the nomike insulating paper. Wherein the Nomick insulating paper has a size of 0.08 x 15 mm; the glass fiber is alkali-free and wax-free glass fiber. The end-to-end insulating layer of the outgoing line of the transformer is repaired by the polyamide adhesive tape, the end-to-end insulating layer is reinforced by the silica gel tape protection repairing insulating layer, the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the winding from 0.08 x 15mm, and the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the Nomike insulating paper from 0..
The processing sequence is as follows: the head and the tail ends of the lead wires of the transformer are wrapped by the polyamide adhesive tape 1/2, stacked bags → the silica gel tape 1/2, stacked bags → the Nomick insulating paper is 0.08 × 15mm1/2, stacked bags → the glass fibers 1/2, and the processing length is based on the requirements of technical and process documents.
The transformer main body is waterproof:
placing the transformer at 100 deg.C for 130 min;
heating the transformer main body to 45 ℃, and performing first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 300MPa, and keeping for 20 min; then keeping the voltage for 20min under the positive pressure of 3.5kg, and baking the transformer for 250min at the temperature of 120 ℃;
when the temperature of the transformer main body is reduced to 45 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping the vacuum degree at 500MPa for 20 min; then keeping the voltage for 10min under the positive pressure of 2.5kg, and baking the transformer for 250min at the temperature of 140 ℃;
when the temperature of the transformer main body is reduced to 50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping the vacuum degree at 300MPa for 20 min; then keeping the temperature for 20min under the positive pressure of 3.5kg, and baking the transformer for 500min at the temperature of 120 ℃.
The common paint adopts three-proofing paint. The waterproof treatment method can also be applied to the electric reactor, and the treatment method is consistent with that of the transformer.
Specific example 2
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner; attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape; attaching the folded Nomick insulating paper to the outer surface of the silica gel belt; and then the folded glass filaments are attached to the outer surface of the nomike insulating paper. Wherein the Nomick insulating paper has a size of 0.08 x 15 mm; the glass fiber is alkali-free and wax-free glass fiber. The end-to-end insulating layer of the outgoing line of the transformer is repaired by the polyamide adhesive tape, the end-to-end insulating layer is reinforced by the silica gel tape protection repairing insulating layer, the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the winding from 0.08 x 15mm, and the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the Nomike insulating paper from 0..
The processing sequence is as follows: the head and the tail ends of the lead wires of the transformer are wrapped by the polyamide adhesive tape 1/2, stacked bags → the silica gel tape 1/2, stacked bags → the Nomick insulating paper is 0.08 × 15mm1/2, stacked bags → the glass fibers 1/2, and the processing length is based on the requirements of technical and process documents.
The transformer main body is waterproof:
placing the transformer at 120 deg.C for 110 min;
heating the transformer main body to 45-50 ℃, and carrying out first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 500MPa, and keeping for 10 min; then keeping the voltage for 10min under the positive pressure of 2.5kg, and baking the transformer for 220min at the temperature of 140 ℃;
when the temperature of the transformer main body is reduced to 50 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10min at the vacuum degree of 300 MPa; then keeping the voltage for 20min under the positive pressure of 3.5kg, and baking the transformer for 220min at the temperature of 120 ℃;
when the temperature of the transformer main body is reduced to 50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping the vacuum degree at 500MPa for 10 min; then keeping the temperature for 10min under the positive pressure of 2.5kg, and baking the transformer for 450min at the temperature of 140 ℃.
Specific example 3
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner; attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape; attaching the folded Nomick insulating paper to the outer surface of the silica gel belt; and then the folded glass filaments are attached to the outer surface of the nomike insulating paper. Wherein the Nomick insulating paper has a size of 0.08 x 15 mm; the glass fiber is alkali-free and wax-free glass fiber. The end-to-end insulating layer of the outgoing line of the transformer is repaired by the polyamide adhesive tape, the end-to-end insulating layer is reinforced by the silica gel tape protection repairing insulating layer, the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the winding from 0.08 x 15mm, and the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the Nomike insulating paper from 0..
The processing sequence is as follows: the head and the tail ends of the lead wires of the transformer are wrapped by the polyamide adhesive tape 1/2, stacked bags → the silica gel tape 1/2, stacked bags → the Nomick insulating paper is 0.08 × 15mm1/2, stacked bags → the glass fibers 1/2, and the processing length is based on the requirements of technical and process documents.
The transformer main body is waterproof:
placing the transformer at 110 deg.C for 120 min;
heating the transformer main body to 48 ℃, and performing first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 400MPa, and keeping for 15 min; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 240min at the temperature of 135 ℃.
When the temperature of the transformer main body is reduced to 49 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping the vacuum degree at 350MPa for 15 min; then keeping the temperature for 18min under the positive pressure of 3kg, and baking the transformer for 225min at the temperature of 135 ℃;
when the temperature of the transformer main body is reduced to 46 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping for 13min when the vacuum degree is 380 MPa; then keeping the temperature for 12min under the positive pressure of 2.8kg, and baking the transformer for 490min at the temperature of 135 ℃.
Specific example 4
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner; attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape; attaching the folded Nomick insulating paper to the outer surface of the silica gel belt; and then the folded glass filaments are attached to the outer surface of the nomike insulating paper. Wherein the Nomick insulating paper has a size of 0.08 x 15 mm; the glass fiber is alkali-free and wax-free glass fiber. The end-to-end insulating layer of the outgoing line of the transformer is repaired by the polyamide adhesive tape, the end-to-end insulating layer is reinforced by the silica gel tape protection repairing insulating layer, the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the winding from 0.08 x 15mm, and the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the Nomike insulating paper from 0..
The processing sequence is as follows: the head and the tail ends of the lead wires of the transformer are wrapped by the polyamide adhesive tape 1/2, stacked bags → the silica gel tape 1/2, stacked bags → the Nomick insulating paper is 0.08 × 15mm1/2, stacked bags → the glass fibers 1/2, and the processing length is based on the requirements of technical and process documents.
The transformer main body is waterproof:
placing the transformer at 115 deg.C for 125 min;
heating the transformer main body to 46 ℃, and performing first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 350MPa, and keeping for 18 min; then keeping the voltage for 16min under the positive pressure of 3.2kg, and baking the transformer for 230min at the temperature of 130 ℃;
when the temperature of the transformer main body is reduced to 45 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the voltage transformer under the positive pressure of 3kg for 15min, and baking the voltage transformer at the temperature of 135 ℃ for 240 min;
when the temperature of the transformer main body is reduced to 47 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping for 13min when the vacuum degree is 400 MPa; then keeping the voltage for 17min under the positive pressure of 3.2kg, and baking the transformer for 490min at the temperature of 128 ℃.
Specific example 5
A waterproof treatment method for a transformer comprises the following steps:
the outgoing line of the transformer is waterproof:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner; attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape; attaching the folded Nomick insulating paper to the outer surface of the silica gel belt; and then the folded glass filaments are attached to the outer surface of the nomike insulating paper. Wherein the Nomick insulating paper has a size of 0.08 x 15 mm; the glass fiber is alkali-free and wax-free glass fiber. The end-to-end insulating layer of the outgoing line of the transformer is repaired by the polyamide adhesive tape, the end-to-end insulating layer is reinforced by the silica gel tape protection repairing insulating layer, the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the winding from 0.08 x 15mm, and the end-to-end insulating layer of the Nomike insulating paper is used for protecting the end-to-end insulating layer of the Nomike insulating paper from 0..
The processing sequence is as follows: the head and the tail ends of the lead wires of the transformer are wrapped by the polyamide adhesive tape 1/2, stacked bags → the silica gel tape 1/2, stacked bags → the Nomick insulating paper is 0.08 × 15mm1/2, stacked bags → the glass fibers 1/2, and the processing length is based on the requirements of technical and process documents.
The transformer main body is waterproof:
placing the transformer at 114 deg.C for 120 min;
heating the transformer main body to 48 ℃, and carrying out first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 450MPa, and keeping for 15 min; then keeping the voltage for 17min under the positive pressure of 2.9kg, and baking the transformer for 245min at the temperature of 134 ℃;
when the temperature of the transformer main body is reduced to 47 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 14min when the vacuum degree is 480 MPa; then keeping the temperature for 18min under the positive pressure of 2.8kg, and baking the transformer for 228min at the temperature of 126 ℃;
when the temperature of the transformer main body is reduced to 50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 480min at the temperature of 135 ℃.
The waterproof transformer obtained by applying the waterproof treatment methods of the transformers of examples 1 to 5 has waterproof performance and external surface insulation performance after soaking the waterproof transformers of examples 1 to 5 and a commercial JBK3 series (comparative example 1) in purified water and tap water respectively, and the characterization results are as follows:
as can be seen from the table, the waterproof transformer is soaked for a long time (96h) without water seepage, the insulation performance of the outer surface is excellent, the resistance of the outer surface can reach more than 170M omega, the service life of the transformer is greatly prolonged, and the potential safety hazard is reduced.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained by applying specific examples, which are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Claims (10)
1. A waterproof treatment method for a transformer is characterized by comprising the following steps:
s1, heating the transformer main body to 45-50 ℃, performing first vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10-20min at a vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
s2, when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 10-20min at the vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and baking the transformer for 220-250min at the temperature of 120-140 ℃;
s3, when the temperature of the transformer main body is reduced to 45-50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping the transformer main body for 10-20min at the vacuum degree of 300-500 MPa; then keeping the temperature for 10-20min under the positive pressure of 2.5-3.5kg, and then baking the transformer at the temperature of 120-140 ℃ for 500 min.
2. The waterproof processing method for the transformer according to claim 1, further comprising waterproof processing of the head end and the tail end of the outgoing line of the transformer, and the method comprises the following steps:
seamlessly winding and wrapping the outgoing line of the transformer by using the polyamide adhesive tape;
attaching a silica gel tape to the outer surface of the polyamide adhesive tape;
attaching Nomick insulating paper to the outer surface of the silica gel tape;
and then the glass fiber is attached to the outer surface of the Nomick insulating paper.
3. The waterproof processing method for the transformer according to claim 2, wherein the waterproof processing method for the head end and the tail end of the outgoing line of the transformer comprises the following steps:
folding the polyamide adhesive tape to wrap the leading-out wires at the head end and the tail end of the transformer in a seamless winding manner;
attaching a folded silica gel tape to the outer surface of the polyamide adhesive tape;
attaching the folded Nomick insulating paper to the outer surface of the silica gel belt;
and then the folded glass filaments are attached to the outer surface of the nomike insulating paper.
4. The transformer waterproofing treatment method according to claim 3, wherein the Nomk insulating paper has a size of 0.08 x 15 mm.
5. The transformer waterproofing treatment method according to claim 3, wherein the glass filaments are alkali-free wax-free glass filaments.
6. The waterproof processing method for transformer of claim 1, wherein before step S1, the method further comprises removing moisture, the method for removing moisture is:
the transformer is placed at the temperature of 100-120 ℃, and the dehumidifying time is 110-130 min.
7. The transformer waterproofing treatment method according to claim 1, wherein S1 specifically is:
heating the transformer main body to 48 ℃, and performing first vacuum paint dipping on the transformer main body, wherein the vacuum degree is 400MPa, and keeping for 15 min; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 240min at the temperature of 135 ℃.
8. The transformer waterproofing treatment method according to claim 1, wherein S2 specifically is:
when the temperature of the transformer main body is reduced to 45 ℃, carrying out secondary vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 240min at the temperature of 135 ℃.
9. The transformer waterproofing treatment method according to claim 1, wherein S3 specifically is:
when the temperature of the transformer main body is reduced to 50 ℃, carrying out third vacuum paint dipping on the transformer main body, and keeping for 15min when the vacuum degree is 400 MPa; then keeping the temperature for 15min under the positive pressure of 3kg, and baking the transformer for 480min at the temperature of 135 ℃.
10. The transformer waterproofing treatment method according to claim 1, wherein the paint is a three-proofing paint.
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| CN202010757719.5A CN111863421A (en) | 2020-07-31 | 2020-07-31 | Waterproof treatment method for transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010757719.5A CN111863421A (en) | 2020-07-31 | 2020-07-31 | Waterproof treatment method for transformer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236825A (en) * | 2007-12-14 | 2008-08-06 | 沈阳福林特种变压器有限公司 | Auxiliary transformer for electric engine |
| CN101521111A (en) * | 2008-11-07 | 2009-09-02 | 江苏海田电气股份有限公司 | Novel immersion painting process for transformer coil |
| CN105097272A (en) * | 2015-09-11 | 2015-11-25 | 中变集团上海变压器有限公司 | Vacuum pressure paint-soaking process for dry-type transformer coil |
| CN111341545A (en) * | 2020-03-23 | 2020-06-26 | 大连北方互感器集团有限公司 | Manufacturing process of transformer iron core |
-
2020
- 2020-07-31 CN CN202010757719.5A patent/CN111863421A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236825A (en) * | 2007-12-14 | 2008-08-06 | 沈阳福林特种变压器有限公司 | Auxiliary transformer for electric engine |
| CN101521111A (en) * | 2008-11-07 | 2009-09-02 | 江苏海田电气股份有限公司 | Novel immersion painting process for transformer coil |
| CN105097272A (en) * | 2015-09-11 | 2015-11-25 | 中变集团上海变压器有限公司 | Vacuum pressure paint-soaking process for dry-type transformer coil |
| CN111341545A (en) * | 2020-03-23 | 2020-06-26 | 大连北方互感器集团有限公司 | Manufacturing process of transformer iron core |
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Application publication date: 20201030 |