CN107955927A - A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment and spraying method - Google Patents
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment and spraying method Download PDFInfo
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- CN107955927A CN107955927A CN201711328296.XA CN201711328296A CN107955927A CN 107955927 A CN107955927 A CN 107955927A CN 201711328296 A CN201711328296 A CN 201711328296A CN 107955927 A CN107955927 A CN 107955927A
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- combustion chamber
- powder
- dropout
- grounded screen
- corrosion resistant
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
Abstract
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment, including the first combustion chamber, the second combustion chamber, the first combustion chamber, the second combustion chamber are connected with Rafael nozzle, nozzle successively；One end away from the second combustion chamber is equipped with fuel nozzle, oxygen jet on first combustion chamber, first combustion chamber both sides is equipped with the first powder-feeding mouth, the second powder-feeding mouth, dust absorbing device are equipped with before and after the both sides of second combustion chamber successively, the nozzle both sides are equipped with gas separator, and dust absorbing device, gas separator separate removing to unfused dust, gaseous impurity respectively.A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment provided by the invention, by setting composite chamber, dust absorbing device, gas separator, not only good anti-corrosion and electric conductivity can guarantee that, but also make it that metal coating is not easily to fall off, extended the service life of grounded screen.
Description
Technical field
The present invention relates to metal material processing field, especially a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout
Spray equipment and spraying method.
Background technology
Power system transformer substation grounded screen both can guarantee that substation safety operation or can ensure life safety, but grounded screen is buried
Entering underground, moisture, dissolved salt, oxygen and microorganism in soil etc. erodes grounded screen, if being safeguarded not in time, grounded screen
Material can become fragile, aliquation, loose even be broken so that ground resistance, which increases, high potential difference occurs, serious to compromise people
Body safety and the stable operation of substation.Metal coating preferably can prevent soil from corroding to grounding net of transformer substation, be solution
Certainly one of effective means of transformer substation grounding network anti-corrosion.
Existing grounding anti-corrosion erosion measure has cathode protection method, Aplataer process and fine copper access method etc., equal in these methods
Existing defects, as cathode protection method is divided into sacrificial anode protection and impressed current method, the former is not suitable in the environment of high resistivity
Use, the latter's maintenance management work is complicated, heavy workload；When there is the function of current, hot-dip coating not can effectively prevent Aplataer process
The corrosion of grounded screen；Fine copper access method there are contaminated soil and it is expensive the problems such as.
Supersonic flame spraying technology is one kind of plasma spray technology, compared to electric arc spraying, plasma spraying and explosion
The technologies such as spraying have prepares coating superior, especially for metal-cermic coating, there is wide utilization prospect.Ni-based nitridation
The coating of titanium has the advantages that high intensity, high rigidity, high temperature resistant, acid and alkali-resistance erosion etc. are a series of, in tool processes, machine components
And the industry such as decoration is commonly employed.But existing supersonic flame spraying technology still have flame temperature it is high,
The problems such as flame flow velocity degree is low, coating oxygen content is high and coating is easy to fall off.
Chinese patent " pseudo alloy anticorrosion coating for grounding net of power system "《Publication number：Bis- 101980403A of C》Propose
A kind of method with pseudo alloy coating carries out anti-corrosion treatment to grounded screen, its pseudo- alloy include aluminium 12%-30%, copper 6%-15%,
Remaining content is zinc, which has soil certain metallic pollution, and there are it is expensive the problems such as.Chinese patent is " a kind of
Supersonic flame sprayer "《Publication number：Bis- 201933144U of C》A kind of supersonic flame sprayer is proposed, in temperature control
Room is equipped with not active gases nozzle, to spray into low temperature not active gases to reduce gas flow temperature, but it is not specified what
Kind not active gases, therefore can not solve the problems, such as coating shedding.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray
Coating device and spraying method, can improve the consistency of metal-cermic coating, reduce the oxygen content of coating, eliminate the gas in coating
Impurity, controls the surface temperature of spray equipment, not only ensures good anti-corrosion and electric conductivity so as to reach, but also causes metal coating
It is not easily to fall off, so as to extend the service life of grounded screen.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment, including the first combustion chamber,TwoCombustion chamber, the
One combustion chamber,TwoCombustion chamber is connected with Rafael nozzle, nozzle successively；Away from the on first combustion chamberTwoOne end of combustion chamber
Equipped with fuel nozzle, oxygen jet, the first combustion chamber both sides are equipped with the first powder-feeding mouth, and describedTwoBefore and after the both sides of combustion chamber successively
Equipped withTwoPowder-feeding mouth, dust absorbing device, the nozzle both sides are equipped with gas separator, dust absorbing device, gas separator point
It is other that unfused dust, gaseous impurity separate removing.
First combustion chamber,TwoCombustor surface is covered with water-cooling system, and the water inlet of water-cooling system is in the first burning
Room side, water outlet are symmetrically distributed inTwoCombustion chamber both sides.
First powder-feeding mouth,TwoPowder-feeding mouth and the first combustion chamber,TwoCombustion chamber tilts and is directed toward powderject side
To.
The dust absorbing device is CJMA, CJMB type high-voltage electrostatic dust separator
The gas separator is cyclone type gas-water separator.
The dust absorbing device, gas separator respectively close to Rafael nozzle front and back end.Ensure two kinds of cermets
Powder just carries out dedusting dehumidifying after being in abundant melting mixing state.
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spraying method, comprises the following steps：
1）, pass through the first powder-feeding mouth, respectivelyTwoThe powder of two kinds of different melting points is added to the first combustion chamber, second by powder-feeding mouth
Combustion chamber, the first combustion chamber are used to the higher powder of fusing point being heated to molten state, and the second combustion chamber is used for fusing point is relatively low
Powder is heated to molten state；
2）, the powder under two kinds of molten conditions meet and be sufficiently mixed under the action of high-temperature combustion gas, by daraf(reciprocal of farad) you
When before and after jet pipe, the powder under molten condition is through dust absorbing device dedusting；Powder under molten condition dehumidifies through dust absorbing device；
3）, the powder after dedusting dehumidifying under the molten condition that obtains sprayed through nozzle, into metal-cermic coating after solidification.
First combustion chamber, the second combustor surface are provided with water-cooling system, water-cooling system temperature control is higher than powder
Melting temperature and be less than Powder Oxidation temperature.
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spraying method of the present invention, by adding multistage combustion
Room, can be respectively used to powder with different melting point being heated to molten condition and be sufficiently mixed, can so reduce unfused powder
The amount of dirt, meanwhile, dystectic powder is passed through is passed through the second follow-up combustion close to the first combustion chamber of igniting, the powder of low melting point
Room is burnt, temperature automatically controlled, simplified temperature control process is so carried out using the distance from burning gases, and the setting of composite chamber helps
Ensure fully melting by extending the distance of injection in dystectic powder and mixed with the powder of low melting point, improve uniform
Degree；By setting water-cooling system, the temperature of multistage combustion chamber surface can be effectively controlled, had both avoided powder from occurring because temperature is excessive
Oxidation is also beneficial to powder and forms molten condition at the same time；It is used for by adding dust absorbing device by unfused dust and molten state
Spray separates, and sponges the powder for failing fusing so that the consistency of metal coating is improved；By setting gas point
It is used to separate the gaseous impurities such as oxygen with molten state spray from device and absorbs gaseous impurity, so as to reduces metal-cermic coating
In air gap, effectively prevent coming off for coating, extend the service life of grounded screen.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the schematic diagram of the present invention.
In figure：Fuel nozzle 1, oxygen jet 2, igniter 3, the first powder-feeding mouth 4, the second powder-feeding mouth 5, the first combustion chamber 6,
Second combustion chamber 7, water-cooling system 8, dust absorbing device 9, Rafael nozzle 10, gas separator 11, nozzle 12.
Embodiment
As shown in Figure 1, a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment includes the first powder-feeding mouth
4th, the second powder-feeding mouth 5, the first combustion chamber 6, the second combustion chamber 7, water-cooling system 8, dust absorbing device 9, Rafael nozzle 10, gas
Separator 11 and nozzle 12.
First combustion chamber 6 is connected with the second combustion chamber 7, wherein, the first combustion chamber 6 is used for the higher powder of fusing point
End is heated to molten state, and the second combustion chamber 7 is used to the relatively low powder of fusing point being heated to molten state, and with the fusing point under molten state
Higher powder meets.Away from the on the first combustion chamber 6TwoOne end of combustion chamber 7 is equipped with fuel nozzle 1, oxygen jet 2,
The top of first combustion chamber 6 is disposed with igniter 3, and fuel nozzle 1, oxygen jet 2 and igniter 3 are being passed through fuel and oxygen simultaneously
Lighted so as to produce high-temperature high-pressure fuel gas flame stream.
First powder-feeding mouth 4 is symmetrically distributed in 6 both sides of the first combustion chamber, for the higher powder of fusing point to be fed through
One combustion chamber 6.In order to accelerate jet velocity, the first powder-feeding mouth 4 and the first combustion chamber 6 are presented non-90 degree structure and be directed toward and is sprayed
Direction.
Second powder-feeding mouth 5 is symmetrically distributed in the second combustion chamber both sides, for the relatively low powder of fusing point to be fed through
Non-90 degree structure is presented in two combustion chambers 7, the second powder-feeding mouth 5 and the second combustion chamber 7, and the abundant of powder that can strengthen two kinds of fusing points mixes
Merge and accelerate jet velocity.
The water-cooling system 8 is overlying on 7 surface of the first combustion chamber 6 and the second combustion chamber, and water inlet is away from the second combustion chamber 7
6 side of the first combustion chamber, water outlet is symmetrically distributed in 7 both sides of the second combustion chamber, for controlling the first combustion chamber 6 and the second combustion
Burn the surface temperature of room 7.Surface temperature both ensured at metal ceramic powder depending on the fusing point for the metal ceramic powder being passed through
In molten condition, while also avoid aoxidizing.
10 front end of Rafael nozzle is connected with the second combustion chamber 7, and rear end is connected with nozzle 12.
The dust absorbing device 9 is symmetrically distributed in close to 7 both sides of the second combustion chamber of Rafael nozzle 10, specific to use
CJMA, CJMB type high-voltage electrostatic dust separator, dust absorbing device 9 are used for the relatively low powder of the higher powder of unfused fusing point and fusing point
End is made tiny powder particle enter with air-flow in a powerful electric field, is become positively charged by electrostatic field two level principle.Work as band
When charged particle reaches the electric field between absorber catch tray, particle is adhered on metal dish by the attraction of metal sucker, so that
Obtain dust to separate with the powder under empty molten condition, reach clean-up effect.
The gas separator 11 is symmetrically distributed in close to 12 both sides of nozzle of Rafael nozzle 10, specifically using cyclone type
Moisture trap.Gas separator 11 uses the different principle of material mass by the gaseous impurities such as oxygen and the spray of molten state
Separation, improves the consistency of coating, reduces the oxygen content of coating, reduce the gap of coating, effectively prevent coating shedding.
A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spraying method, comprises the following steps：
1）, pass through the first powder-feeding mouth 4, respectivelyTwoThe metal ceramic powder of two kinds of different melting points is added to first by powder-feeding mouth 5
Combustion chamber 6, the second combustion chamber 7, the first combustion chamber 6 are used to the higher metal ceramic powder of fusing point being heated to molten state, and second
Combustion chamber 7 is used to the relatively low metal ceramic powder of fusing point being heated to molten state；
2）, the metal ceramic powder under two kinds of molten conditions meet and be sufficiently mixed under the action of high-temperature combustion gas, passing through
When crossing before and after Rafael nozzle 10, the metal ceramic powder under molten condition is through 9 dedusting of dust absorbing device；Gold under molten condition
Belong to ceramic powders to dehumidify through dust absorbing device 11；
3）, the powder after dedusting dehumidifying under the molten condition that obtains sprayed through nozzle 12, into metal-cermic coating in connecing after solidification
Ground net surface.
Claims (8)
- A kind of 1. corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment, it is characterised in that：Including the first combustion chamber （6）, the second combustion chamber（7）, the first combustion chamber（6）, the second combustion chamber（7）Successively with Rafael nozzle（10）, nozzle（12）Even Connect；First combustion chamber（6）Upper remote second combustion chamber（7）One end be equipped with fuel nozzle（1）, oxygen jet（2）, the first burning Room（6）Both sides are equipped with the first powder-feeding mouth（4）, second combustion chamber（7）The second powder-feeding mouth is equipped with before and after both sides successively（5）, powder Dust absorption device（9）, the nozzle（12）Both sides are equipped with gas separator（11）, dust absorbing device（9）, gas separator（11）Point It is other that unfused dust, gaseous impurity separate removing.
- 2. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment according to claim 1, its feature It is：First combustion chamber（6）, the second combustion chamber（7）Surface is covered with water-cooling system, and the water inlet of water-cooling system is in the first combustion Burn room（6）Side, water outlet are symmetrically distributed in the second combustion chamber（7）Both sides.
- 3. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment according to claim 1, its feature It is：First powder-feeding mouth（4）, the second powder-feeding mouth（5）With the first combustion chamber（6）, the second combustion chamber（7）Tilt and be directed toward powder Last injection direction.
- 4. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment according to claim 1, its feature It is：The dust absorbing device（9）For CJMA, CJMB type high-voltage electrostatic dust separator.
- 5. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment according to claim 1, its feature It is：The gas separator（11）For cyclone type gas-water separator.
- 6. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment according to claim 1, its feature It is：The dust absorbing device（9）, gas separator（11）Respectively close to Rafael nozzle（10）Front and back end.
- A kind of 7. corrosion resistant grounded screen metal-cermic coating anti-dropout spraying method, it is characterised in that：Comprise the following steps：1）, pass through the first powder-feeding mouth respectively（4）, the second powder-feeding mouth（5）The powder of two kinds of different melting points is added to the first burning Room（6）, the second combustion chamber（7）, the first combustion chamber（6）For the higher powder of fusing point to be heated to molten state, the second combustion chamber （7）For the relatively low powder of fusing point to be heated to molten state；2）, the powder under two kinds of molten conditions meet and be sufficiently mixed under the action of high-temperature combustion gas, by daraf(reciprocal of farad) you Jet pipe（10）When front and rear, the powder under molten condition is through dust absorbing device（9）Dedusting；Powder under molten condition is through dust absorbing Device（11）Dehumidifying；3）, powder after dedusting dehumidifying under the molten condition that obtains is through nozzle（12）Spray, into metal-cermic coating after solidification.
- 8. a kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spraying method according to claim 7, its feature It is：In the first combustion chamber（6）, the second combustion chamber（7）Surface is provided with water-cooling system, and water-cooling system temperature control is higher than powder Last melting temperature and be less than Powder Oxidation temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328296.XA CN107955927B (en) | 2017-12-13 | 2017-12-13 | Corrosion-resistant grounding grid metal ceramic coating anti-drop spraying device and spraying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328296.XA CN107955927B (en) | 2017-12-13 | 2017-12-13 | Corrosion-resistant grounding grid metal ceramic coating anti-drop spraying device and spraying method |
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| Publication Number | Publication Date |
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| CN107955927A true CN107955927A (en) | 2018-04-24 |
| CN107955927B CN107955927B (en) | 2023-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676054A (en) * | 2020-12-17 | 2021-04-20 | 青岛科技大学 | Vortex guide type supersonic flame spraying spray gun device |
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| JPH06198127A (en) * | 1993-01-05 | 1994-07-19 | Hokkaido Electric Power Co Inc:The | Waste gas treating device |
| US20050082395A1 (en) * | 2003-10-09 | 2005-04-21 | Thomas Gardega | Apparatus for thermal spray coating |
| US20060062928A1 (en) * | 2004-09-23 | 2006-03-23 | Lichtblau George J | Flame spraying process and apparatus |
| CN201620186U (en) * | 2009-12-23 | 2010-11-03 | 广州有色金属研究院 | Novel low-temperature high-speed supersonic flame spraying device |
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| CN106064123A (en) * | 2016-06-24 | 2016-11-02 | 北京工业大学 | Temperature control rate controlling flame spray coating device and method are coordinated in a kind of classification |
| CN207646273U (en) * | 2017-12-13 | 2018-07-24 | 广东电网有限责任公司江门供电局 | A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment |
-
2017
- 2017-12-13 CN CN201711328296.XA patent/CN107955927B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06198127A (en) * | 1993-01-05 | 1994-07-19 | Hokkaido Electric Power Co Inc:The | Waste gas treating device |
| US20050082395A1 (en) * | 2003-10-09 | 2005-04-21 | Thomas Gardega | Apparatus for thermal spray coating |
| US20060062928A1 (en) * | 2004-09-23 | 2006-03-23 | Lichtblau George J | Flame spraying process and apparatus |
| CN201620186U (en) * | 2009-12-23 | 2010-11-03 | 广州有色金属研究院 | Novel low-temperature high-speed supersonic flame spraying device |
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| CN106064123A (en) * | 2016-06-24 | 2016-11-02 | 北京工业大学 | Temperature control rate controlling flame spray coating device and method are coordinated in a kind of classification |
| CN207646273U (en) * | 2017-12-13 | 2018-07-24 | 广东电网有限责任公司江门供电局 | A kind of corrosion resistant grounded screen metal-cermic coating anti-dropout spray equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676054A (en) * | 2020-12-17 | 2021-04-20 | 青岛科技大学 | Vortex guide type supersonic flame spraying spray gun device |
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| CN107955927B (en) | 2023-09-29 |
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