CN209072214U - Composite coating and generator of wind generating set rotor endcap - Google Patents

Abstract

It includes thermal spray metal bottom that the utility model, which provides a kind of composite coating and generator of wind generating set rotor endcap, the composite coating, and the thickness of the thermal spray metal bottom is greater than 180 μm and is less than or equal to 200 μm；Ceramic layer is formed on the thermal spray metal bottom.Composite coating and generator of wind generating set rotor endcap provided by the utility model, not only can be improved wearability and resistance to ag(e)ing, can also significantly improve the anticorrosion service life.

Description

Composite coating and generator of wind generating set rotor endcap

Technical field

The utility model relates to technical field of wind power generation, more particularly, are related to a kind of composite coating and wind-power electricity generation Set generator rotor endcap.

Background technique

Jiggering tooling device will be will use in wind power generating set single blade hoisting process, turning gear can rub wind-force Coating on rotor end cap of power generator.But the coating abrasion performance of wind power generator rotor end cap is poor at present, often occurs not With the abrasion of degree.For the coating of abrasion, patching coating can only be carried out after the completion of unit lifts, simultaneously as being related to height Idle job, patching coating is time-consuming, laborious and have security risk, or even also results in installation period delay, brings adverse effect.

Utility model content

A kind of composite coating and generator of wind generating set rotor endcap have improved wearability and anticorrosive property.

One side according to the present utility model, provides a kind of composite coating, and the composite coating includes: thermal spray metal bottom Layer, the thickness of the thermal spray metal bottom are greater than 180 μm and are less than or equal to 200 μm；Ceramic layer is formed in the thermal jet oil gidling Belong on bottom.

Preferably, the composite coating may also include the envelope between the thermal spray metal bottom and the ceramic layer Paint layer is closed, the closing paint layer closes the hole of the thermal spray metal bottom.

Preferably, the ratio of the thickness of the thickness of the ceramic layer and the thermal spray metal bottom can be 0.5~1.0.

Preferably, the thickness of the ceramic layer can be in the range of 100 μm~150 μm.

Preferably, the thickness of the ceramic layer can be more than or equal to 110 μm and less than 120 μm.

Preferably, the closing paint layer can be formed using Epoxy sealer.

Preferably, the thickness of the thermal spray metal bottom can be greater than 180 μm and be less than or equal to 190 μm.

Preferably, the thermal spray metal bottom can be thermal jet zinc coating, thermal spraying aluminum or thermal spraying zinc-aluminum alloy coating.

Preferably, the thermal spray metal bottom can be in homogeneous thickness.

Another aspect according to the present utility model provides a kind of generator of wind generating set rotor endcap, the wind-force Generating set electricity generator rotor endcap may include above-mentioned composite coating.

Composite coating and generator of wind generating set rotor endcap provided by the utility model, not only can be improved resistance to Mill property and resistance to ag(e)ing, can also significantly improve the anticorrosion service life.

Detailed description of the invention

By the detailed description with reference to the accompanying drawing to the exemplary embodiment of the utility model, those skilled in the art will The comprehensive understanding to the utility model can be obtained, in which:

Fig. 1 is the schematic diagram of the composite coating of one embodiment according to the present utility model.

Fig. 2 is the schematic diagram of the composite coating of another embodiment according to the present utility model.

Drawing reference numeral explanation:

1, thermal spray metal bottom, 2, closing paint layer, 3, ceramic layer.

Specific embodiment

Hereinafter, with reference to the accompanying drawings to the embodiments of the present invention are described in detail, wherein in the accompanying drawings, identical attached drawing Label is for indicating identical component.

The composite coating and generator of wind generating set rotor endcap of exemplary embodiment according to the present utility model can Guarantee wearability and anticorrosion requirement, reduces cost.It is carried out below with reference to preferred embodiment of the Fig. 1 to Fig. 2 to the utility model Detailed description.

Referring to Fig.1, the composite coating that exemplary embodiment according to the present utility model provides, which may include three Layer.Specifically, composite coating can include: thermal spray metal bottom 1, thermal spray metal bottom 1 are located at internal layer, and thermal jet oil gidling The thickness for belonging to bottom 1 is greater than 180 μm and is less than or equal to 200 μm；Ceramic layer 3, ceramic layer 3 are located at outer layer.

The composite coating of exemplary embodiment according to the present utility model can be used for wind power generator rotor end cap, not only may be used The excellent anticorrosion service life is provided, the wearability of rotor end cap of power generator also can be improved, to decrease or even eliminate wind-power electricity generation Unit single blade lifts the rubbing action of jiggering tooling to abrasion caused by rotor end cap of power generator.

Thermal spray metal bottom 1 can be used as anode loss protection Fe-based substrate, to reach anticorrosion ability.As showing Example, thermal spray metal bottom 1 can be thermal jet zinc coating, thermal spraying aluminum or thermal spraying zinc-aluminum alloy coating etc., wherein allumen The content of middle aluminium is 15%.

The thickness of thermal spray metal bottom 1 as bottom can meet the thickness in the range of 150 μm~200 μm In the case where, composite coating according to the present utility model can meet 20 years or more anticorrosion service life.

If the thickness of thermal spray metal bottom 1 is less than or equal to 150, corrosion-resisting function is relatively low, will lead to anticorrosion The lost of life.

When the thickness of thermal spray metal bottom 1 is greater than 180 μm, superior antiseptic property can get, therefore can guarantee Higher corrosion resistance.

However, since thickness is blocked up, will lead to adhesive force shakiness when the thickness of thermal spray metal bottom 1 is greater than 200 μm It is fixed, and will lead to construction cost and material cost raising.

That is, being wanted when the thickness of thermal spray metal bottom 1 reaches predeterminated level i.e. and can reach required antiseptic property It asks, the thickness of thermal spray metal bottom 1 is blocked up to bring adhesive force to reduce and increase construction cost and material cost instead Problem.

It is therefore preferred that the thickness of thermal spray metal bottom 1 can be greater than 180 μm and be less than or equal in the range of 190 μm, To reduce construction cost and material cost while obtaining excellent antiseptic property.

Thermal spray metal bottom 1 can have thickness uniform, to fully ensure that anticorrosion ability, and can realize good outer It sees, in favor of the formation of subsequent machining operations and coating.

Ceramic layer 3 as surface layer is wear-resistant and resistance to old because its excellent wearability and resistance to ag(e)ing can meet protective coating The performance of change needs.

As an example, ceramic layer 3 can be the nonmetallic ceramics layer of direct thermal spraying, but embodiment is without being limited thereto, may be used also To be the epoxy coating comprising wear-resistant ceramic powder.

The ratio of the thickness of the thickness and thermal spray metal bottom 1 of ceramic layer 3 is in the range of 0.5~1.0, needed for realizing Wear-resistant and ageing-resistant performance.

When the ratio of the thickness of ceramic layer 3 and the thickness of thermal spray metal bottom 1 is less than 0.5, it is difficult to reach desired resistance to Abrasion and ageing-resistant performance will lead to the reduction of composite coating service life.When the thickness of ceramic layer 3 and the thickness of thermal spray metal bottom 1 When the ratio of degree is greater than 1.0,3 thickness of ceramic layer is excessive, and ceramic layer 3 is combined less reliable with thermal spray metal bottom 1, and can be led Construction cost and material cost is caused to increase.

As an example, the thickness of ceramic layer 3 can be in the range of 100 μm~150 μm.When the thickness of ceramic layer 3 is less than 100 μm when, can be difficult to ensure desired wearability.

Preferably, the thickness of ceramic layer 3 can be more than or equal to 110 μm, to provide higher wearability.

However, 3 thickness of ceramic layer is excessive, is combined with thermal spray metal bottom 1 when the thickness of ceramic layer 3 is greater than 150 μm Less reliable, that is, adhesive force reduces, in addition, also resulting in construction cost and material cost raising.

That is, can reach required wear-resistant and ageing-resistant performance when the thickness of ceramic layer 3 reaches predeterminated level i.e. It is required that the blocked up adhesive force that will lead to ceramic layer 3 instead of the thickness of ceramic layer 3 reduces, and it will increase construction cost and material Cost.

It is therefore preferred that the thickness of ceramic layer 3 can be more than or equal to 110 μm and less than 120 μm, with relatively strong wear-resisting in satisfaction Property while, reduce construction cost and material cost.

Referring to Fig. 2, another exemplary embodiment according to the present utility model, composite coating may also include closing paint layer 2, envelope Thermal spray metal bottom 1 can be covered and close thermal spray metal between thermal spray metal bottom 1 and ceramic layer 3 by closing paint layer 2 The hole of bottom 1, to enhance corrosion-resisting function.

In addition, closing paint layer 2 also has enhancing thermal spray metal bottom since closing paint layer 2 has good binding performance The effect of reliability is combined between layer 1 and ceramic layer 3.

As an example, closing paint layer 2 can be formed using Epoxy sealer.

The specific forming process of composite coating in the present embodiment will be described in detail below.

The formation process of protective coating may include being used to form the construction of each coating and carrying out at surface before construction The jet cleaning art work of reason.

When abrasive jet cleaning and coating are constructed, envionmental humidity is positively retained at < 85%, and steel surface temperature is higher than dew Point temperature can be at least 3 DEG C.

For all coating surfaces to be painted, abrasive jet cleaning should be integrally carried out, after welding so that coating is formed.

It can be used before abrasive jet cleaning manually or power tool carry out structure pretreatment.For example, can be gone with scraper or abrasive machine Except spatter, weld seam should polish fairing.Sharp edge can be not less than the fillet of 1mm with grinder buffing at radius.Surface stacking is split Seam, field trash should be ground off.Structure of steel product defect processing grade should meet P3 as defined in ISO8501-3 grades.

In addition, all oil, rouge, water, ash, salt etc. should be removed before abrasive jet cleaning.It, can when suspection has greasy residues after cleaning With ultraviolet radiator method/black light lamp method inspection, it is ensured that surface is without greasy dirt.

After abrasive jet cleaning, abrasive jet cleaning 0.5~1.5mm of abrasive material size, the roughness on surface to be sprayed reaches Sa3 grades.Separately Outside, surface to be sprayed will be cleaned, dry, without greasy dirt, and surface dirt degree should be not more than 2 grades, and surface Contents of Water-soluble Chloride is not Greater than 50mg/m²。

In abrasive jet cleaning, thermal spray metal bottom can be formed by Construction of Thermal Spraying.

Electric arc spraying or plasma spraying can be used in Construction of Thermal Spraying.As an example, System for Electric Arc Spraying Current can for 180~ 230A, wire feed voltage can be 22~24V.

In Construction of Thermal Spraying, thermal spraying gun should keep vertical (60 °~90 ° of angle) with surface to be sprayed as far as possible and keep 150~200mm distance.

Preferably, it can once spray and reach defined thickness, and can ensure coating by the method for being mutually perpendicular to, intersecting Thickness is uniform and reaches defined thickness requirement.

After the completion of thermal spraying, it is formed by thermal spray metal bottom appearance and answers uniformity, no cracking, blistering or ground Exposed spot, and the defect without the metal melting particle or influence coating service life and anti-corrosion effect that adhere to loosely.

It, should the dust of thermal spray metal bottom and loose as early as possible after the completion of thermal spraying and after thermal spray metal bottom is cooling Particle, and on thermal spray metal bottom formed closing paint layer to be closed, thus avoid thermal spray metal bottom occur Oxidation is contaminated.

As an example, closing paint layer can use Epoxy sealer and be formed.The thickness of closing paint layer does not limit specifically, As long as it can cover entire thermal spray metal bottom.

After forming closing paint layer, ceramic layer can be formed on closing paint layer, to increase wearability and resistance to ag(e)ing.Pottery The forming method of enamel coating is unrestricted, as an example, can construct according to general ceramic paint coating process.

After composite coating is integrally fully cured, wet type sponge leak detector can be used and detect uncoated holiday, meanwhile, Coating adhesion is required to meet >=5MPa.

Taber (Taber) abrasion test is being used to composite coating according to the present utility model and existing protective coating Find after patience detection in laboratory, under same friction condition, composite coating abrasion according to the present utility model Amount is only 1/10th or so of existing protective coating, is remarkably improved wearability relative to existing protective coating.

Meanwhile using homemade auxiliary mould, generated on protective coating when jiggering tooling when simulating single blade lifting Horizontal friction force carry out horizontal friction test it can also be seen that, under same horizontal friction force, there are big faces for existing protective coating Product is seriously worn, or even wears up to substrate, and shows mild wear almost without abrasion or only according to the composite coating of the utility model, The remote super existing protective coating of wearability.

The composite coating and generator of wind generating set rotor endcap of embodiment according to the present utility model, by using Thermal spray metal bottom with predetermined thickness, can obtain good corrosion fatigue life.By using ceramic layer, can obtain Excellent wearability and resistance to ag(e)ing.

By using above-mentioned composite coating and generator of wind generating set rotor endcap, wind-power electricity generation not only can satisfy Unit single blade lifts the wearability requirement of jiggering tooling rubbing action, can also significantly improve the anticorrosion service life.In addition, due to Protective coating abrasion loss is greatly reduced, and can greatly reduce or even avoid patching coating related work, in this case, not only Wind power generating set lifting construction efficiency can be improved, can also decrease or even eliminate repair operation bring security risk.

Specific embodiment of the present utility model is described in detail above, although having show and described some realities Apply example, it will be understood by those skilled in the art that do not depart from defined by the claims and their equivalents it is practical In the case where novel principle and spirit, these embodiments can be combined, be modified and perfect, these combinations, modification and Improve also answer it is within the protection scope of the present utility model.

Claims (10)

1. a kind of composite coating, which is characterized in that the composite coating includes:

Thermal spray metal bottom (1), the thickness of the thermal spray metal bottom (1) are greater than 180 μm and are less than or equal to 200 μm；

Ceramic layer (3) is formed on the thermal spray metal bottom (1).

2. composite coating according to claim 1, which is characterized in that the composite coating further includes being located at the thermal spraying Closing paint layer (2) between metal back layer (1) and the ceramic layer (3), the closing paint layer (2) close the thermal spray metal The hole of bottom (1).

3. composite coating according to claim 1, which is characterized in that the thickness of the ceramic layer (3) and the thermal spraying The ratio of the thickness of metal back layer (1) is in the range of 0.5~1.0.

4. composite coating according to claim 3, which is characterized in that the thickness of the ceramic layer (3) is in 100 μm~150 μ In the range of m.

5. composite coating according to claim 4, which is characterized in that the thickness of the ceramic layer (3) is more than or equal to 110 μm And less than 120 μm.

6. composite coating according to claim 2, which is characterized in that the closing paint layer (2) utilizes Epoxy sealer shape At.

7. composite coating according to claim 1, which is characterized in that the thickness of the thermal spray metal bottom (1) is greater than 180 μm and be less than or equal to 190 μm in the range of.

8. composite coating according to claim 1, which is characterized in that the thermal spray metal bottom (1) be thermal jet zinc coating, Thermal spraying aluminum or thermal spraying zinc-aluminum alloy coating.

9. composite coating according to claim 1, which is characterized in that thermal spray metal bottom (1) thickness is uniform.

10. a kind of generator of wind generating set rotor endcap, which is characterized in that the generator of wind generating set rotor-end Lid includes -9 described in any item composite coatings according to claim 1.