CN110238010A - A kind of switchgear renovation technique - Google Patents

A kind of switchgear renovation technique Download PDF

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Publication number
CN110238010A
CN110238010A CN201910646158.9A CN201910646158A CN110238010A CN 110238010 A CN110238010 A CN 110238010A CN 201910646158 A CN201910646158 A CN 201910646158A CN 110238010 A CN110238010 A CN 110238010A
Authority
CN
China
Prior art keywords
switchgear
metal
renovation technique
coat
technique according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910646158.9A
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Chinese (zh)
Inventor
吕旺燕
岳楹超
曾志鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Electric Power Research Institute of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201910646158.9A priority Critical patent/CN110238010A/en
Publication of CN110238010A publication Critical patent/CN110238010A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/102—Pretreatment of metallic substrates
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/005—Repairing damaged coatings

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The embodiment of the present application discloses a kind of switchgear renovation technique, comprising: the repair process of removing surface, brush plating and plating posttreatment is successively carried out to the coat of metal；The repair process of coatings and performance test is successively pre-processed, coated to insulating element.Switchgear renovation technique provided by the embodiment of the present application, the reparation of switchgear is divided for the reparation of the coat of metal and the reparation of insulating element, different restorative procedures is provided for two different components, the coat of metal can quickly and effectively be repaired, improve insulation resistance, reduce partial discharge, solve the problems, such as power distribution room switchgear because contamination make moist and corrode caused by failure, defect.Simple process provided herein is easily and effectively environmentally friendly, and power off time is short.

Description

A kind of switchgear renovation technique
Technical field
This application involves switchgear recovery technique field more particularly to a kind of switchgear renovation techniques.
Background technique
Distribution power distribution room, switch room running environment are poor, and the dehumidification equipments such as air-conditioning, dehumidifier are not configured substantially, partially match Electric room filth is more serious.Power distribution room switchgear, which makes moist and corrodes because of contamination, leads to a lot of failures, is distribution switchgear failure, lacks One of the main reason for falling into.
Summary of the invention
The embodiment of the present application provides a kind of switchgear renovation technique, solves power distribution room switchgear because contamination is made moist and is corroded The problem of caused failure, defect.
In view of this, this application provides a kind of switchgear renovation techniques, comprising:
The repair process of removing surface, brush plating and plating posttreatment is successively carried out to the coat of metal；
The repair process of coatings and performance test is successively pre-processed, coated to insulating element.
Optionally, removing surface is carried out to the coat of metal to specifically include:
If there are greasy dirts for metal coating surface, first degreased with organic solvent and degreasant solution；
Then when metal coating surface roughness is greater than preset value or there are when fatigue layer, is polished with grinding tool surface Or Seiko repairing is carried out with stock-removing machine, until surface roughness meets the requirements or exposes the normal tissue of parent metal.
Optionally, the organic solvent is one of gasoline, kerosene, acetone and ethyl alcohol or a variety of.
Optionally, the degreasant solution is formulated by following components: the Na of NaOH, 50g/L of 10g/L2CO3And 50g/L Na3PO4·12H2O。
Optionally, the grinding tool are as follows: sand paper, emery cloth, abrasive machine or wire brush.
Optionally, removing surface is carried out to the coat of metal to specifically include:
If there are greasy dirts for metal coating surface, the net processing of electricity first is carried out to coating surface and is degreased；
Then by being activated the oxidation film formed after the net processing of removal electricity, and surface is made to show the crystallization group of metal It knits.
Optionally, pretreatment is carried out to insulating element to specifically include:
The dirt on insulating element surface is cleaned, and is polished the surface of insulating element；
Current-carrying part is protected.
It optionally, further include coating hydrophobic material after coating coatings and before performance test.
It optionally, further include drying after coating hydrophobic material and before performance test.
It optionally, further include coating semi-conductive coating after drying and before performance test.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, a kind of switchgear renovation technique is provided, comprising: it is clear that surface is successively carried out to the coat of metal It manages, the repair process of brush plating and plating posttreatment；Insulating element is successively pre-processed, coats coatings and performance test Repair process.Switchgear renovation technique provided by the embodiment of the present application divides the reparation of switchgear for the coat of metal The reparation with insulating element is repaired, different restorative procedures is provided for two different components, can quickly and effectively repair gold Belong to coating, reduce corrosion rate, improve insulation resistance, reduce partial discharge, extends service life of equipment, solve power distribution room switchgear Caused by making moist and corrode because of contamination the problem of failure, defect.Simple process provided herein is easily and effectively environmentally friendly, has a power failure Time is short.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the application specific embodiment or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the application, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of switchgear renovation technique provided by the embodiment of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
The embodiment of the present application provides a kind of switchgear renovation technique, including following below scheme:
S1: the repair process of removing surface, brush plating and plating posttreatment is successively carried out to the coat of metal；
S2: the repair process of coatings and performance test is successively pre-processed, coated to insulating element.
The reparation of switchgear is divided repairing for the coat of metal by switchgear renovation technique provided by the embodiment of the present application Multiple and insulating element reparation, different restorative procedures is provided for two different components, can quickly and effectively repair metal Coating, reduce corrosion rate, improve insulation resistance, reduce partial discharge, extend service life of equipment, solve power distribution room switchgear because The problem of failure, defect caused by contamination dampness and corrosion.Simple process provided herein is easily and effectively environmentally friendly, when power failure Between it is short.
The following are further describe to switchgear renovation technique a kind of in the embodiment of the present application:
It refers specifically to use method chemically or mechanically to the oil on plating piece surface firstly, carrying out removing surface to the coat of metal Dirt, rust staining etc. are cleared up, comprising:
If there are greasy dirts for metal coating surface, first degreased with organic solvent and degreasant solution；
Then when metal coating surface roughness is greater than preset value or there are when fatigue layer, is polished with grinding tool surface Or Seiko repairing is carried out with stock-removing machine, until surface roughness meets the requirements or exposes the normal tissue of parent metal.
It should be noted that the surface of plating piece must be clean smooth, therefore clear firstly the need of surface is carried out to the coat of metal Reason.Switchgear may be infected with greasy dirt in use, if therefore metal coating surface there are greasy dirts, can be to lower section Method clears up greasy dirt.Greasy dirt if it does not exist then can directly polish etc. to surface with grinding tool.
Most greasy dirts first are removed with organic solvents such as gasoline, kerosene, acetone or alcohols in the cleaning of greasy dirt, then again Residual greasy dirt is removed with chemical degreasing solution, and is cleaned with clear water.The scheme of alkaline degreasing can be used in non-fat portion, and the application mentions A kind of alkaline degreasing formula has been supplied, has been formulated by following components: the Na of NaOH, 50g/L of 10g/L2CO3With 50g/L's Na3PO4·12H2O.The condition of degreasing process are as follows: 70 DEG C, impregnate 5-10min.
After cleaning oil pollution, if plating piece surface there is also burr, taper, out-of-roundness etc. cause the roughness on surface excessive, Or there are when fatigue layer, needing to polish to surface with grinding tool, or Seiko repairing is carried out with stock-removing machine, it is correct to obtain Geometry and the normal tissue for exposing parent metal.Plating piece surface roughness Ra generally after conditioning should be at 5 μm or less. The scheme that can take of grinding tool polishing is: a, successively being polished piece surface with 800 mesh → 1200 mesh → 3000 mesh sand paper；b, It is polished with abrasive machine；C, brushed with wire brush；D, blasting treatment.
When plating piece surface has a large amount of greasy dirts or surface to have thicker rust, can be handled with above scheme, still The plating piece seldom for surface institute's sticking oil stain and rust staining, it is not necessary to use above-mentioned processing method, and directly use electro-cleaning and activation method Greasy dirt and rust staining are removed, it can be more fast and convenient.
Electro-cleaning and activation method are specific as follows:
If there are greasy dirts for metal coating surface, the net processing of electricity first is carried out to coating surface and is degreased；
Then by being activated the oxidation film formed after the net processing of removal electricity, and surface is made to show the crystallization group of metal It knits.
Electric net processing is exactly the electrolytic degreasing in slot depositing process.Any parent metal can be taken off with same in brush plating Lipoprotein solution, is only different voltage required by parent metal and degreasing time is different.Forward current is generally used when electric net (plating piece connects cathode), to non-ferrous metal and the unimach especially sensitive to hydrogen embrittlement, using reverse current (plating piece connects anode). Oil stains-less is answered on surface after electricity is net, is soaked well to water, is not hung droplet.It can be using the net technique of electricity are as follows: electric net liquid is by with the following group Assignment system forms: the Na of 50g/L3PO4.12H2O, the Na of NaOH, 20g/L of 25g/L2CO3With the NaCl of 3g/L.Process conditions: Workpiece connects cathode, and plated pen meets anode, voltage 10-12V, electric net time 10-30s.
It is activated to remove oxidation film that plating piece is likely to form after degreasing and etch plating piece surface slightly And showing the crystalline structure of metal, it is ensured that metal ion can be restored on fresh matrix surface and is firmly combined with matrix, Form the good coating of bond strength.Activation uses anode activation, activate formula of liquid: the sodium citrate of 150g/L, 100g/L The nickel chloride of citric acid and 3g/L；Process conditions: workpiece connects cathode, and plated pen meets anode, voltage 10-12V, electric net time 10- 30s。
Start brush plating after carrying out removing surface.
It can carry out silver brush plating, copper brushing plating or tinning respectively according to the actual needs of the site.Brush plating step are as follows: 1, Anode on brushing plating pen is wrapped in cotton and cotton gauze, dips in and powers on the dedicated electrolyte of brush plating；2, part and special straight will be repaired The cathode in galvanic electricity source connects, and brushing plating pen is connect with positive pole；3, power on, regulating power source voltage；4, brushing plating pen is held, with It is repaired part contact and relative motion, the metal ion in electrolyte migrates under electric field action to workpiece surface, from workpiece table Face is reduced into metal ion after obtaining electronics, and crystallization deposition forms the coat of metal, as time went on, coating on the surface of the workpiece Progressive additive；5, plating solution can constantly dip in use, it is also possible to which injection-tube, hydraulic pump constantly instill.
Finally carry out plating posttreatment.
Brush plating finishes will carry out plating posttreatment immediately, remove the saprolite on plating piece surface, such as water mark, raffinate trace.It adopts Necessary guard method, such as drying, polishing, polishing, oiling are taken, to guarantee that brush plating part is as excellent as before.If to silver coating Color there are certain requirements, and the method that passivation can be taken after brush plating guarantees that silver coating is non-discolouring for a long time.
The following are the specific descriptions repaired to insulating element.
Pretreatment is carried out to insulating element to specifically include:
The dirt on insulating element surface is cleaned, and is polished the surface of insulating element；Current-carrying part is protected.
Specifically: 1, dip in upper alcohol with scouring pad cleaning cleaning is carried out to dust, dirt of insulating element etc.；2, with thick Corundum gauze or sand paper are polished；3, current-carrying part is wrapped up with preservative film, raw material band or towel etc., it is also possible to cover Conductor part is covered, prevents coating when spraying from spraying (if conductor part has had protective cover, it is convenient to omit this step).
After pretreatment, in order to improve the insulation performance of insulating element, shelf depreciation is reduced, needs to coat on insulating element One layer of insulating materials.Coating coatings include: 1, for solvent type coatings, are needed solvent and coatings according to one Certainty ratio is prepared, and brush with hairbrush after mixing evenly or be sprayed with spray gun；2, it insulate and applies for no-solvent type Material, first on insulating element with hairbrush carry out brush or with spray gun spraying or brushing one layer of couplant, then carried out again with hairbrush It brushes or carries out spray insulation coating with spray gun.
It further include that coating is hydrophobic after coating coatings and before performance test to improve the hydrophobicity of coating surface Material: carrying out the coating of drainage powder before coatings surface drying or one layer of hydrophobic painting is coated with after insulating materials surface drying Material.
In order to solidify coatings as early as possible and dry, to reduce power off time, coat after hydrophobic material and performance test Before, further include drying: drying rifle with heat or blowing hot wind is dried.
It further include coating after dry and before performance test to improve the distortion electric field at dielectric and conductor boundary Semi-conductive coating: layer of semiconductor material is brushed in dielectric and conductor boundary.
It is finally tested for the property: carrying out the performance tests such as insulation resistance, partial discharge, pressure resistance before telegram in reply, reach switchgear fortune Row condition could send a telegram in reply.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.

Claims (10)

1. a kind of switchgear renovation technique characterized by comprising
The repair process of removing surface, brush plating and plating posttreatment is successively carried out to the coat of metal；
The repair process of coatings and performance test is successively pre-processed, coated to insulating element.
2. switchgear renovation technique according to claim 1, which is characterized in that it is specific to carry out removing surface to the coat of metal Include:
If there are greasy dirts for metal coating surface, first degreased with organic solvent and degreasant solution；
Then when metal coating surface roughness is greater than preset value or there are when fatigue layer, with grinding tool to the table of the coat of metal Face polish or carries out Seiko repairing with stock-removing machine, until the surface roughness of the coat of metal meets the requirements or exposes The normal tissue of parent metal out.
3. switchgear renovation technique according to claim 2, which is characterized in that the organic solvent is gasoline, kerosene, third One of ketone and ethyl alcohol are a variety of.
4. switchgear renovation technique according to claim 2, which is characterized in that the degreasant solution is prepared by following components It forms: the Na of NaOH, 50g/L of 10g/L2CO3With the Na of 50g/L3PO4·12H2O。
5. switchgear renovation technique according to claim 2, which is characterized in that the grinding tool are as follows: sand paper, emery cloth, grinding wheel Machine or wire brush.
6. switchgear renovation technique according to claim 1, which is characterized in that it is specific to carry out removing surface to the coat of metal Include:
If there are greasy dirts for metal coating surface, the net processing of electricity first is carried out to coating surface and is degreased；
Then by being activated the oxidation film formed after the net processing of removal electricity, and surface is made to show the crystalline structure of metal.
7. switchgear renovation technique according to claim 1, which is characterized in that carry out pre-processing specific packet to insulating element It includes:
The dirt on insulating element surface is cleaned, and is polished the surface of insulating element；
Current-carrying part is protected.
8. switchgear renovation technique according to claim 1, which is characterized in that coating coatings after and performance test Before, it further include coating hydrophobic material.
9. switchgear renovation technique according to claim 8, which is characterized in that coating hydrophobic material after and performance test Before, it further include drying.
10. switchgear renovation technique according to claim 9, which is characterized in that after dry and before performance test, further include Coat semi-conductive coating.
CN201910646158.9A 2019-07-17 2019-07-17 A kind of switchgear renovation technique Pending CN110238010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910646158.9A CN110238010A (en) 2019-07-17 2019-07-17 A kind of switchgear renovation technique

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Application Number Priority Date Filing Date Title
CN201910646158.9A CN110238010A (en) 2019-07-17 2019-07-17 A kind of switchgear renovation technique

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CN110238010A true CN110238010A (en) 2019-09-17

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101999151A (en) * 2008-02-12 2011-03-30 Abb研究有限公司 Surface modified electrical insulation system
CN106941244A (en) * 2017-05-17 2017-07-11 成都清威科技有限公司 A kind of switch cubicle insulation restorative procedure
CN108193242A (en) * 2017-12-27 2018-06-22 中国人民解放军陆军装甲兵学院 A kind of method for preparing nickel cobalt coating in copper alloy surface Brush Plating

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101999151A (en) * 2008-02-12 2011-03-30 Abb研究有限公司 Surface modified electrical insulation system
CN106941244A (en) * 2017-05-17 2017-07-11 成都清威科技有限公司 A kind of switch cubicle insulation restorative procedure
CN108193242A (en) * 2017-12-27 2018-06-22 中国人民解放军陆军装甲兵学院 A kind of method for preparing nickel cobalt coating in copper alloy surface Brush Plating

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
林春华等: "《电刷镀技术便览》", 28 February 1991, 机械工业出版社 *

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Application publication date: 20190917