CN111653443B - Self-repairing anti-corrosion treatment method for outdoor high-voltage isolating switch - Google Patents
Self-repairing anti-corrosion treatment method for outdoor high-voltage isolating switch Download PDFInfo
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- CN111653443B CN111653443B CN202010384074.5A CN202010384074A CN111653443B CN 111653443 B CN111653443 B CN 111653443B CN 202010384074 A CN202010384074 A CN 202010384074A CN 111653443 B CN111653443 B CN 111653443B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
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Abstract
The invention discloses a self-repairing anti-corrosion treatment method of an outdoor high-voltage isolating switch, which belongs to the technical field of electrical equipment corrosion prevention, can realize the improvement of the formula of an anti-corrosion base layer, improve the strength and further improve the anti-corrosion performance, innovatively introduces a magnetic repair ball and a guide repair fiber, utilizes the magnetic attraction between the guide repair fiber and the magnetic repair ball to carry out interpolation connection, then carries out direction correction on the guide repair fiber along the track of a spring part based on the electrostatic acting force through an electrostatic correction ring to ensure that the guide repair fiber is vertical to the anti-corrosion base layer, then sprays polyester amino baking paint on the anti-corrosion base layer to cover the guide repair fiber to form a baking paint layer, improves the bonding strength of the anti-corrosion base layer and the baking paint layer on the whole, and can be timely transmitted to the magnetic repair ball when being corroded and damaged to ensure that the magnetic repair ball is broken and heals along the guide repair fiber, the good corrosion resistance is continuously kept, and the corrosion resistance strength and the corrosion resistance effect of the high-voltage isolating switch are greatly improved.
Description
Technical Field
The invention relates to the technical field of electrical equipment corrosion prevention, in particular to a self-repairing corrosion prevention treatment method for an outdoor high-voltage isolating switch.
Background
The isolating switch plays an isolating role in a circuit, is the most power transmission and transformation equipment used in a power system, has a simple working principle and structure, but has high requirements on working reliability due to large using amount, and the running condition of the isolating switch has important influence on the safety of a power grid. The main functions of the isolating switch are as follows: after opening, establishing a reliable insulation gap, and separating the equipment or the circuit to be overhauled from the power supply by using an obvious disconnection point so as to ensure the safety of maintainers and equipment; switching lines according to operation requirements; the low current in the line can be divided and combined, such as the charging current of a sleeve, a bus, a connector and a short cable, the capacitance current of a switch voltage-sharing capacitor, the circulating current when double buses are switched, the exciting current of a voltage transformer and the like; according to the specific conditions of different structure types, the method can be used for dividing and integrating the no-load exciting current of the constant-capacity transformer. The high-voltage isolating switch can be divided into an outdoor high-voltage isolating switch and an indoor high-voltage isolating switch according to different installation modes. The outdoor high-voltage isolating switch can bear the action of wind, rain, snow, dirt, condensation, ice, thick frost and the like, and is suitable for being installed on a terrace. The isolating switch is mainly suitable for low-voltage terminal power distribution systems of residences, buildings and the like in low-voltage equipment, and has the main functions of breaking and connecting lines with loads.
The outdoor high-voltage isolating switch is an electrical equipment which is most affected by environment and weather conditions, the operating conditions of the outdoor high-voltage isolating switch are severe, the outdoor high-voltage isolating switch is subjected to the influences of wind, rain, sunshine, ice, snow, frost, dew and damp and heat in the long run of the year and the invasion of sand dust, salt mist, dirt and birds and insects, spring parts in the isolating switch are easy to collide, scratch and rust, the appearance of products is affected, the problems of the spring parts such as weakening of elasticity, fatigue deformation and poor contact are caused, the problems of overheating of a conductive loop, burning loss of a contact and the like are further caused, the product performance and the service life are seriously affected, the workload and the maintenance cost of maintenance are increased, and the safe operation of an electric power system is threatened.
In the prior art, most spring parts of the isolating switch are protected by paint and electrogalvanizing, and the common paint cannot bear serious atmospheric corrosion, so that the protecting period is too short and the isolating switch needs to be brushed again every year; the corrosion speed of the zinc layer in polluted industrial atmosphere reaches 6-15 mu m/year, and the thickness of the electrogalvanized layer is limited, generally 18-30 mu m, so that the electrogalvanized part is directly exposed in humid atmosphere for a long time and is seriously corroded; the technology of combining dacromet, dacromet and acrylic polyurethane finish paint which is gradually developed in recent years cannot meet the anti-corrosion requirement of the isolating switch spring part due to short anti-corrosion period and high maintenance cost, has poor strength, and once the anti-corrosion damage still occurs, the healing performance is not good, and the damage can be further expanded until the spring part is corroded to influence normal use.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a self-repairing anticorrosion treatment method of an outdoor high-voltage isolating switch, which can improve the formula of an anticorrosion base layer, improve the strength and further improve the anticorrosion performance, innovatively introduce a magnetic repair ball and a guide repair fiber, perform interpolation connection by utilizing the magnetic attraction between the guide repair fiber and the magnetic repair ball, perform direction correction on the guide repair fiber along the track of a spring part through an electrostatic correction ring based on the electrostatic acting force to ensure that the guide repair fiber is vertical to the anticorrosion base layer, then spray polyester amino baking paint on the anticorrosion base layer to cover the guide repair fiber to form a baking paint layer, improve the bonding strength of the anticorrosion base layer and the baking paint layer on the whole, and can be timely transmitted to the magnetic repair ball when being corroded and damaged so as to break and repair and heal the damage along the guide repair fiber, the good corrosion resistance is continuously kept, and the corrosion resistance strength and the corrosion resistance effect of the high-voltage isolating switch are greatly improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A self-repairing anti-corrosion treatment method for an outdoor high-voltage isolating switch comprises the following steps:
s1, sweeping dirt and other impurities accumulated on the surface of the spring element by using a broom or a vacuum cleaner;
s2, cleaning with a water-based cleaning agent to remove oil stains, cleaning with clear water, naturally drying or blowing dry with compressed air, and keeping dry while cleaning to remove the cleaning agent to avoid corrosion;
s3, removing a paint film which starts to penetrate due to corrosion on the spring piece through sand blasting;
s4, uniformly putting 1-1.5g of magnetic repairing balls into each ml of base layer coating, magnetically stirring for 5-10min, heating in water bath to 30-45 ℃, dipping the spring part into the base layer coating for 30-120S, taking out and centrifugally drying;
s5, spin-drying, placing in a curing furnace, preheating for 5-10min, keeping the temperature at 55-65 ℃, then heating to the curing temperature of 250-260 ℃, taking out after heating for 30min, inserting the guide repair fiber into the semi-cured base layer coating, and performing direction correction on the guide repair fiber through a correction mechanism;
s6, putting the spring piece into a curing furnace again, continuing to heat for 30-60min at the curing temperature of 250-260 ℃, and finally uniformly cooling to room temperature at the speed of 2 ℃/min and taking out to form an anti-corrosion base layer on the surface of the spring piece;
s7, uniformly spraying polyester amino baking varnish on the cooled anticorrosive base layer of the spring part to form a baking varnish layer, wherein the leveling time is 10-20 min;
s8, drying the baking varnish layer at the temperature of 120-180 ℃ to obtain the baking varnish.
Furthermore, the sand for sand blasting in the step S3 has a granularity of 10-35mm, is quartz sand dried or baked by the sun, has a wind pressure of 0.3MPa-0.4MPa, a distance between the nozzle and the part of 300mm, and a diameter of the nozzle of about 6-10mm, so that the surface treatment effect on the spring part is ensured, and the surface damage to the spring part is avoided.
Further, the base layer coating in the step S4 comprises the following raw materials in parts by weight: 25-35 parts of polyurethane resin, 20-28 parts of phenolic resin, 15-25 parts of organosiloxane resin, 15-25 parts of zinc powder, 15-20 parts of bentonite, 8-18 parts of titanium dioxide, 8-14 parts of glass fiber, 15-22 parts of calcium silicate, 7-15 parts of glass beads, 3-6 parts of titanate coupling agent, 2.5-3.2 parts of mildew preventive, 0.5-2.2 parts of curing agent, 2.5-4 parts of film forming additive, 1-1.8 parts of defoaming agent, 3-4.5 parts of anti-aging agent and 5-12 parts of repair catalyst, so that the corrosion resistance and the mechanical strength of the corrosion-resistant base layer are effectively improved.
Furthermore, the magnetic repairing ball comprises a repairing microcapsule and an outer protective magnetic layer, the outer protective magnetic layer covers the outer surface of the repairing microcapsule, the repairing microcapsule comprises a capsule wall, a repairing agent is filled in the capsule wall, a plurality of reinforcing nano fibers are embedded and connected in the outer protective magnetic layer, the capsule wall is made of phenolic resin, the repairing agent is dicyclopentadiene, the reinforcing nano fibers are used for improving the overall strength of the outer protective magnetic layer, and the outer protective magnetic layer plays a role in protecting the repairing microcapsule.
Further, the magnetic repairing ball is prepared into a repairing microcapsule through in-situ polymerization or interfacial polymerization, then is soaked in a nano ferroferric oxide solution mixed with reinforcing nano fibers, and is dried after centrifugal drying to obtain the magnetic repairing ball.
Furthermore, the repairing catalyst is a Gela cloth catalyst or tungsten hexachloride, and can carry out polymerization reaction with dicyclopentadiene for repairing.
Further, fibre is restoreed in direction includes the fibre main part, fibre main part one end is connected with integrated into one piece's magnetism and draws the end, and the magnetism draws the end and obtains through flooding nanometer ferroferric oxide solution and drying, still extend many dispersion fibre silks in the fibre main part, the direction is restoreed the fibre and is given magnetism for superfine fiber through one end and obtain, and its one end is favorable to after having magnetism to restore the magnetic attraction of ball at magnetism, and the initiative interpolation enters into and connects in the anticorrosive basic unit, and dispersion fibre silk then improves the combination effect of fibre main part and anticorrosive basic unit and baking finish layer.
Furthermore, the correcting mechanism in the step S5 includes an electrostatic generator and an electrostatic correcting ring, the electrostatic correcting ring is electrically connected to the electrostatic generator, the electrostatic correcting ring is of an annular structure matched with the spring element, the electrostatic correcting ring includes an insulating sleeve and an electrostatic inner ring, the electrostatic inner ring is fixedly connected to the inner wall of the insulating sleeve, and the guiding repair fiber on the anti-corrosion base layer is electrostatically attracted along the track of the spring element by electrostatic acting force, so that the guiding repair fiber is radially distributed along the inner ring of the electrostatic correcting ring and is perpendicular to the anti-corrosion base layer.
Furthermore, the thickness of the anti-corrosion base layer is 10-20 μm, and the thickness of the baking paint layer is 20-30 μm.
Further, the step S7 is performed by spraying the polyester amino baking varnish to cover the guiding repair fiber, so as to prevent the guiding repair fiber from being directly exposed to the outside and sensing a non-damaging external force in advance, thereby preventing the magnetic repair ball from being broken and repaired by mistake.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the scheme can realize the improvement on the formula of the anti-corrosion base layer, further improve the anti-corrosion performance while improving the strength, and the magnetic restoring ball and the guiding restoring fiber are innovatively introduced, the magnetic attraction between the guiding restoring fiber and the magnetic restoring ball is utilized to carry out the interpolation connection, then the direction of the guiding repair fiber is corrected by the electrostatic correction ring along the track of the spring element based on the electrostatic acting force to ensure that the guiding repair fiber is vertical to the anti-corrosion base layer, then spraying polyester amino baking paint on the anti-corrosion base layer to cover the guiding repair fiber to form a baking paint layer, the bonding strength of the anti-corrosion base layer and the baking varnish layer is improved on the whole, meanwhile, the anti-corrosion base layer and the baking varnish layer can be conducted to the magnetic repairing ball in time when being corroded and damaged, so that the anti-corrosion base layer is broken, the damage is repaired along the guide repairing fiber to realize healing, good anti-corrosion performance is continuously kept, and the anti-corrosion strength and effect of the high-voltage isolating switch are greatly improved.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural view of an anticorrosion base layer and a baking finish layer according to the invention;
FIG. 3 is a schematic view of the magnetic repair ball of the present invention;
FIG. 4 is a schematic structural view of a guided repair fiber of the present invention;
FIG. 5 is a schematic structural diagram of a correction mechanism of the present invention;
FIG. 6 is a schematic structural diagram of a guiding repair fiber in a corrected state according to the present invention.
The reference numbers in the figures illustrate:
the anti-corrosion coating comprises an anti-corrosion base layer 1, a baking paint layer 2, a magnetic repair ball 3, an outer protective magnetic layer 301, a capsule wall 302, a repair agent 303, reinforcing nano-fibers 304, guiding repair fibers 4, a fiber body 401, a magnetic leading end 402, dispersed fiber filaments 403, an electrostatic generator 5, an electrostatic correction ring 6, an insulating sleeve 601 and an electrostatic inner ring 602.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a self-repairing anticorrosion treatment method for an outdoor high-voltage isolating switch comprises the following steps:
s1, sweeping dirt and other impurities accumulated on the surface of the spring element by using a broom or a vacuum cleaner;
s2, cleaning with a water-based cleaning agent to remove oil stains, cleaning with clear water, naturally drying or blowing dry with compressed air, and keeping dry while cleaning to remove the cleaning agent to avoid corrosion;
s3, removing a paint film which starts to penetrate due to corrosion on the spring piece through sand blasting;
s4, uniformly putting 1g of magnetic repairing balls 3 into each ml of base layer coating, magnetically stirring for 5min, heating in a water bath to 30 ℃, soaking the spring parts into the base layer coating for 30S, taking out and centrifugally drying;
s5, spin-drying, placing in a curing furnace, preheating for 5min, keeping the temperature at 55 ℃, then heating to the curing temperature of 250 ℃, taking out after heating for 30min, inserting the guide repair fiber 4 into the semi-cured base coating, and performing direction correction on the guide repair fiber 4 through a correction mechanism;
s6, putting the spring piece into a curing furnace again, continuing to heat for 30min at the curing temperature of 250 ℃, finally uniformly cooling to room temperature at the speed of 2 ℃/min, and taking out to form an anti-corrosion base layer 1 on the surface of the spring piece;
s7, uniformly spraying polyester amino baking varnish on the cooled anticorrosive base layer 1 of the spring part to form a baking varnish layer 2, wherein the leveling time is 10 min;
s8, drying the baking varnish layer 2 at the temperature of 120 ℃ to obtain the baking varnish.
The thickness of the anti-corrosion base layer 1 is 10 μm, and the thickness of the baking paint layer 2 is 20 μm.
The amount of the guide repair fiber 4 is the same weight as the magnetic repair ball 3.
The granularity of the sand for sand blasting in the step S3 is 10-35mm, the sand is quartz sand dried or baked by the sun, the wind pressure for sand blasting is 0.3-0.4 MPa, the distance between the nozzle and the part is 150-300mm, and the diameter of the nozzle is about 6-10mm, so that the surface treatment effect on the spring part is ensured, and the surface damage to the spring part is avoided.
The base layer coating in the step S4 comprises the following raw materials in parts by weight: 25 parts of polyurethane resin, 20 parts of phenolic resin, 15 parts of organic siloxane resin, 15 parts of zinc powder, 15 parts of bentonite, 8 parts of titanium dioxide, 8 parts of glass fiber, 15 parts of calcium silicate, 7 parts of glass microsphere, 3 parts of titanate coupling agent, 2.5 parts of mildew preventive, 0.5 part of curing agent, 2.5 parts of film-forming assistant, 1 part of defoaming agent, 3 parts of anti-aging agent and 5 parts of repair catalyst, thereby effectively improving the corrosion resistance and mechanical strength of the corrosion-resistant base layer 1.
Referring to fig. 3, the magnetic repairing ball 3 includes a repairing microcapsule and an outer protective magnetic layer 301, the outer protective magnetic layer 301 covers the outer surface of the repairing microcapsule, the repairing microcapsule includes a capsule wall 302, a repairing agent 303 is filled in the capsule wall 302, a plurality of reinforcing nanofibers 304 are embedded and connected in the outer protective magnetic layer 301, the capsule wall 302 is made of phenolic resin, the repairing agent 303 is dicyclopentadiene, the reinforcing nanofibers 304 are used to improve the overall strength of the outer protective magnetic layer 301, and the outer protective magnetic layer 301 plays a role in protecting the repairing microcapsule on one hand, because the spring member is stressed for a long time in the using process of the high-voltage isolating switch, the leakage caused by stress rupture is avoided, on the other hand, the magnetic repairing ball 33 is given magnetism, which can attract the repairing fiber 4 to be inserted, the magnetic repairing ball 3 is made into the repairing microcapsule through in-situ polymerization or interface, then soaking the mixture in a nano ferroferric oxide solution mixed with reinforcing nano fibers 304, centrifugally drying the mixture, and drying the mixture to obtain the nano ferroferric oxide.
The repairing catalyst is a Gela cloth catalyst or tungsten hexachloride, and can carry out polymerization reaction with dicyclopentadiene for repairing.
Referring to fig. 4, the guiding repair fiber 4 includes a fiber main body 401, one end of the fiber main body 401 is connected with an integrally formed magnetic leading end 402, the magnetic leading end 402 is obtained by dipping a nano ferroferric oxide solution and drying, a plurality of dispersed fiber filaments 403 extend from the fiber main body 401, the guiding repair fiber 4 is obtained by endowing magnetic property to one end of an ultrafine fiber, one end of the guiding repair fiber has magnetic property, which is beneficial to magnetic attraction of the magnetic repair ball 3, and actively inserts into the anticorrosion base layer 1 for connection, and the dispersed fiber filaments 403 improve the combination effect of the fiber main body 401 with the anticorrosion base layer 1 and the baking varnish layer 2.
Referring to fig. 5-6, the correcting mechanism in step S5 includes an electrostatic generator 5 and an electrostatic correcting ring 6, and the electrostatic correcting ring 6 is electrically connected to the electrostatic generator 5, the electrostatic correcting ring 6 is an annular structure matched with the spring element, the electrostatic correcting ring 6 includes an insulating sleeve 601 and an electrostatic inner ring 602, and the electrostatic inner ring 602 is fixedly connected to the inner wall of the insulating sleeve 601, and performs electrostatic attraction on the guiding repair fiber 4 on the anticorrosion base layer 1 along the track of the spring element by electrostatic acting force, so that the guiding repair fiber 4 is radially distributed along the inner ring of the electrostatic correcting ring 6 and perpendicular to the anticorrosion base layer 1, on one hand, the bonding strength and the overall compressive strength of the anticorrosion base layer 1 and the baking varnish layer 2 are improved, on the other hand, the accuracy of induction damage of the guiding repair fiber is improved, and the damage is well transferred to the magnetic repair ball 3.
The polyester amino baking varnish is sprayed in the step S7 to cover the guide repairing fiber 4, so that the condition that the guide repairing fiber 4 is directly exposed outside and non-destructive external force is sensed in advance to cause the mistaken repairing of the breakage of the magnetic repairing ball 3 is avoided.
Example 2:
referring to fig. 1-2, a self-repairing anticorrosion treatment method for an outdoor high-voltage isolating switch comprises the following steps:
s1, sweeping dirt and other impurities accumulated on the surface of the spring element by using a broom or a vacuum cleaner;
s2, cleaning with a water-based cleaning agent to remove oil stains, cleaning with clear water, naturally drying or blowing dry with compressed air, and keeping dry while cleaning to remove the cleaning agent to avoid corrosion;
s3, removing a paint film which starts to penetrate due to corrosion on the spring piece through sand blasting;
s4, uniformly putting 1.2g of magnetic repairing balls 3 into each ml of base layer coating, magnetically stirring for 8min, heating in water bath to 40 ℃, soaking the spring parts into the base layer coating for 90S, taking out and centrifugally drying;
s5, spin-drying, placing in a curing furnace, preheating for 8min, keeping the temperature at 60 ℃, then heating to the curing temperature of 255 ℃, taking out after heating for 30min, inserting the guide repair fiber 4 into the semi-cured base coating, and performing direction correction on the guide repair fiber 4 through a correction mechanism;
s6, putting the spring piece into a curing furnace again, continuing to heat for 45min at the curing temperature of 255 ℃, finally uniformly cooling to room temperature at the speed of 2 ℃/min, and taking out to form an anti-corrosion base layer 1 on the surface of the spring piece;
s7, uniformly spraying polyester amino baking varnish on the cooled anticorrosive base layer 1 of the spring part to form a baking varnish layer 2, wherein the leveling time is 15 min;
s8, drying the baking varnish layer 2 at the temperature of 150 ℃ to obtain the baking varnish.
The thickness of the anti-corrosion base layer 1 is 15 mu m, and the thickness of the baking varnish layer 2 is 25 mu m.
The base layer coating in the step S4 comprises the following raw materials in parts by weight: 30 parts of polyurethane resin, 24 parts of phenolic resin, 20 parts of organosiloxane resin, 20 parts of zinc powder, 18 parts of bentonite, 15 parts of titanium dioxide, 10 parts of glass fiber, 18 parts of calcium silicate, 10 parts of glass microsphere, 4 parts of titanate coupling agent, 2.8 parts of mildew preventive, 1.2 parts of curing agent, 3.2 parts of film-forming assistant, 1.5 parts of defoaming agent, 4 parts of anti-aging agent and 10 parts of repair catalyst, and the corrosion resistance and the mechanical strength of the corrosion-resistant base layer 1 are effectively improved.
The remainder was in accordance with example 1.
Example 3:
referring to fig. 1-2, a self-repairing anticorrosion treatment method for an outdoor high-voltage isolating switch comprises the following steps:
s1, sweeping dirt and other impurities accumulated on the surface of the spring element by using a broom or a vacuum cleaner;
s2, cleaning with a water-based cleaning agent to remove oil stains, cleaning with clear water, naturally drying or blowing dry with compressed air, and keeping dry while cleaning to remove the cleaning agent to avoid corrosion;
s3, removing a paint film which starts to penetrate due to corrosion on the spring piece through sand blasting;
s4, uniformly putting 1.5g of magnetic repairing balls 3 into each ml of base layer coating, magnetically stirring for 10min, heating in water bath to 45 ℃, dipping the spring parts into the base layer coating for 120S, taking out and centrifugally drying;
s5, spin-drying, placing in a curing furnace, preheating for 10min, keeping the temperature at 65 ℃, then heating to the curing temperature of 260 ℃, taking out after heating for 30min, inserting the guide repair fiber 4 into the semi-cured base coating, and performing direction correction on the guide repair fiber 4 through a correction mechanism;
s6, putting the spring piece into a curing furnace again, continuing to heat for 60min at the curing temperature of 260 ℃, finally uniformly cooling to room temperature at the speed of 2 ℃/min, and taking out to form an anti-corrosion base layer 1 on the surface of the spring piece;
s7, uniformly spraying polyester amino baking varnish on the cooled anticorrosive base layer 1 of the spring part to form a baking varnish layer 2, wherein the leveling time is 20 min;
s8, drying the baking varnish layer 2 at the temperature of 180 ℃ to obtain the baking varnish.
The thickness of the anti-corrosion base layer 1 is 20 μm, and the thickness of the baking paint layer 2 is 30 μm.
The base layer coating in the step S4 comprises the following raw materials in parts by weight: 35 parts of polyurethane resin, 28 parts of phenolic resin, 25 parts of organosiloxane resin, 25 parts of zinc powder, 20 parts of bentonite, 18 parts of titanium dioxide, 14 parts of glass fiber, 22 parts of calcium silicate, 15 parts of glass microsphere, 6 parts of titanate coupling agent, 3.2 parts of mildew preventive, 2.2 parts of curing agent, 4 parts of film-forming additive, 1.8 parts of defoaming agent, 4.5 parts of anti-aging agent and 12 parts of repair catalyst, and the corrosion resistance and the mechanical strength of the corrosion-resistant base layer 1 are effectively improved.
The remainder was in accordance with example 1.
The invention can realize the improvement of the formula of the anticorrosion base layer 1, improve the strength and simultaneously further improve the anticorrosion performance, creatively introduce the magnetic repairing ball 3 and the guiding repairing fiber 4, utilize the magnetic attraction between the guiding repairing fiber 4 and the magnetic repairing ball 3 to carry out the interpolation connection, then use the electrostatic correction ring 6 to carry out the direction correction on the guiding repairing fiber 4 along the track of the spring part based on the electrostatic acting force so as to lead the guiding repairing fiber 4 to be vertical to the anticorrosion base layer 1, then spray the polyester amino baking paint on the anticorrosion base layer 1 to cover the guiding repairing fiber 4 to form the baking paint layer 2, improve the bonding strength of the anticorrosion base layer 1 and the baking paint layer 2 on the whole, and simultaneously can be transmitted to the magnetic repairing ball 3 in time when being corroded and damaged so as to lead the magnetic repairing ball to break and repair the damage along the guiding repairing fiber 4 to realize the healing, and continuously keep good anticorrosion performance, the anti-corrosion strength and effect of the high-voltage isolating switch are greatly improved.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (6)
1. A self-repairing anti-corrosion treatment method of an outdoor high-voltage isolating switch is characterized by comprising the following steps: the method comprises the following steps:
s1, sweeping dirt and other impurities accumulated on the surface of the spring element by using a broom or a vacuum cleaner;
s2, cleaning with a water-based cleaning agent to remove oil stains, cleaning with clear water, naturally drying or blowing dry with compressed air, and keeping dry while cleaning to remove the cleaning agent to avoid corrosion;
s3, removing a paint film which starts to penetrate due to corrosion on the spring piece through sand blasting;
s4, uniformly putting 1-1.5g of magnetic repairing balls (3) into each ml of base layer coating, magnetically stirring for 5-10min, heating in water bath to 30-45 ℃, dipping the spring part into the base layer coating for 30-120S, taking out and centrifugally drying;
s5, spin-drying, placing in a curing furnace, preheating for 5-10min, keeping the temperature at 55-65 ℃, then heating to the curing temperature of 250-260 ℃, taking out after heating for 30min, inserting the guide repair fiber (4) into the semi-cured base coating, and performing direction correction on the guide repair fiber (4) through a correction mechanism;
s6, putting the spring piece into a curing furnace again, continuing to heat for 30-60min at the curing temperature of 250-260 ℃, finally uniformly cooling to room temperature at the speed of 2 ℃/min, and taking out to form an anti-corrosion base layer (1) on the surface of the spring piece;
s7, uniformly spraying polyester amino baking varnish on the cooled anticorrosive base layer (1) of the spring part to form a baking varnish layer (2), wherein the leveling time is 10-20 min;
s8, drying the baking paint layer (2) at the temperature of 120-180 ℃ to obtain the baking paint;
the magnetic repairing ball (3) comprises a repairing microcapsule and an outer protective magnetic layer (301), the outer protective magnetic layer (301) covers the outer surface of the repairing microcapsule, the repairing microcapsule comprises a capsule wall (302), a repairing agent (303) is filled in the capsule wall (302), a plurality of reinforcing nano fibers (304) are embedded and connected in the outer protective magnetic layer (301), the capsule wall (302) is made of phenolic resin, and the repairing agent (303) is dicyclopentadiene; the magnetic repairing ball (3) is prepared into a repairing microcapsule by in-situ polymerization or interfacial polymerization, then is immersed in a nano ferroferric oxide solution mixed with reinforcing nano fibers (304), and is dried after centrifugal drying to obtain the magnetic repairing ball;
the guide repairing fiber (4) comprises a fiber main body (401), one end of the fiber main body (401) is connected with an integrally formed magnetic leading end (402), the magnetic leading end (402) is obtained by soaking a nano ferroferric oxide solution and drying, and a plurality of dispersed fiber filaments (403) also extend from the fiber main body (401);
the correcting mechanism in the step S5 comprises an electrostatic generator (5) and an electrostatic correcting ring (6), the electrostatic correcting ring (6) is electrically connected with the electrostatic generator (5), the electrostatic correcting ring (6) is of an annular structure matched with a spring piece, the electrostatic correcting ring (6) comprises an insulating sleeve (601) and an electrostatic inner ring (602), the electrostatic inner ring (602) is fixedly connected to the inner wall of the insulating sleeve (601), and the electrostatic correcting mechanism performs electrostatic attraction on the guide repairing fibers (4) on the anti-corrosion base layer (1) along the track of the spring piece through electrostatic acting force to enable the guide repairing fibers to be radially distributed along the inner ring surface of the electrostatic correcting ring (6).
2. The self-repairing anticorrosion treatment method for the outdoor high-voltage isolating switch as claimed in claim 1, wherein the self-repairing anticorrosion treatment method comprises the following steps: the granularity of the sand for sand blasting in the step S3 is 10-35mm, the sand is quartz sand dried or baked by the sun, the wind pressure for sand blasting is 0.3-0.4 MPa, the distance between the nozzle and the part is 150-300mm, and the diameter of the nozzle is 6-10 mm.
3. The self-repairing anticorrosion treatment method for the outdoor high-voltage isolating switch as claimed in claim 1, wherein the self-repairing anticorrosion treatment method comprises the following steps: the base layer coating in the step S4 comprises the following raw materials in parts by weight: 25-35 parts of polyurethane resin, 20-28 parts of phenolic resin, 15-25 parts of organosiloxane resin, 15-25 parts of zinc powder, 15-20 parts of bentonite, 8-18 parts of titanium dioxide, 8-14 parts of glass fiber, 15-22 parts of calcium silicate, 7-15 parts of glass beads, 3-6 parts of titanate coupling agent, 2.5-3.2 parts of mildew preventive, 0.5-2.2 parts of curing agent, 2.5-4 parts of film forming additive, 1-1.8 parts of defoaming agent, 3-4.5 parts of anti-aging agent and 5-12 parts of repair catalyst.
4. The self-repairing anticorrosion treatment method for the outdoor high-voltage isolating switch as claimed in claim 3, wherein the self-repairing anticorrosion treatment method comprises the following steps: the repair catalyst is a Glasscloth catalyst or tungsten hexachloride.
5. The self-repairing anticorrosion treatment method for the outdoor high-voltage isolating switch as claimed in claim 1, wherein the self-repairing anticorrosion treatment method comprises the following steps: the thickness of the anti-corrosion base layer (1) is 10-20 mu m, and the thickness of the baking paint layer (2) is 20-30 mu m.
6. The self-repairing anticorrosion treatment method for the outdoor high-voltage isolating switch as claimed in claim 1, wherein the self-repairing anticorrosion treatment method comprises the following steps: and in the step S7, spraying polyester amino baking varnish to cover the guide repair fiber (4).
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| CN112145872A (en) * | 2020-09-22 | 2020-12-29 | 张尚斌 | Self-repairing anti-drop anticorrosive coating with self-formed protective layer |
| CN112156954A (en) * | 2020-09-25 | 2021-01-01 | 陈虾二 | Production process of wear-resistant aluminum alloy door and window |
| CN112452688B (en) * | 2020-11-06 | 2022-02-11 | 炫丽建材江苏有限公司 | Surface anticorrosion treatment process for 45-degree handle-free door plate |
| CN112736825A (en) * | 2020-12-07 | 2021-04-30 | 朱昱雯 | Cable protection pipe of formula selfreparing is inhaled to magnetism |
| CN113070466B (en) * | 2021-03-22 | 2022-05-10 | 江苏竣昌科技有限公司 | Surface treatment method for lightweight aluminum alloy die casting |
| CN113472162B (en) * | 2021-05-18 | 2023-11-14 | 深圳市德达兴驱动科技有限公司 | Self-repairing type insulation treatment process for motor rotor |
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