CN207660649U - A kind of TRT turbines with wear-resistant anti-corrosion nano coating - Google Patents
A kind of TRT turbines with wear-resistant anti-corrosion nano coating Download PDFInfo
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- CN207660649U CN207660649U CN201721628335.3U CN201721628335U CN207660649U CN 207660649 U CN207660649 U CN 207660649U CN 201721628335 U CN201721628335 U CN 201721628335U CN 207660649 U CN207660649 U CN 207660649U
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Abstract
The utility model discloses a kind of TRT turbines with wear-resistant corrosion-resistant finishes, including TRT puts down movable blade and stator blade, and the outer surface of the TRT moving vane of turbine and stator blade is both provided with one layer of nanometer protective layer.The utility model has the TRT turbines of abrasion-proof corrosion-proof erosion resisting coating; by the way that the layer protective layer being made of nano material is arranged in the movable vane of TRT turbines and stator blade surface; its service life was significantly longer than 7 10 months service life and using effects of TRT turbines in the prior art up to 36 months or more；And allow the prolonged continue working of TRT turbines, production cost is reduced, is improved work efficiency.
Description
Technical field
The utility model is related to the blast furnace top pressure recovery gas turbine machine power generator more particularly to one kind of a kind of steel mill to have
The TRT turbines of wear-resistant anti-corrosion nano coating.
Background technology
TRT is Top Gas Pressure Recovery Turbine english abbreviations, and Chinese is translated into " blast furnace top pressure recycling
Turbine power generator ".It is a kind of device to be generated electricity using blast furnace gas top pressure, which is to utilize high pressure coal air pressure
The turbine rotor that power can drag TRT carries out rotation work done, and converts mechanical energy into electric energy by generator connected in series.Work
It is that (the first rank critical revolutions are designed as 1800rpm to 3000rpm to make rotating speed；Second-order critical revolutions are designed as 6400rpm).
Blade is the major part of rotor-support-foundation system, blade material 2Cr13, and carries out toning matter processing.Blade is too fast
Abrasion, corrosion can be brought a negative impact to unit, and performance is mainly for example：Unit efficiency reduces too quickly, blade too quickly
Abrasion and corrodes and bring body vibration to rotor-support-foundation system excessive (vibration of rotor-support-foundation system will produce blade certain negative shadow
It rings, and reduces its service life).Especially under coal gas dry dust removal operational mode, gas temperature is compared under wet dust removal pattern
Improve nearly dynamic and static blade of chlorion heavy corrosion turbine 150 DEG C, being precipitated in coal gas so that movable vane piece service life is 8
A month or so.Due to the exception of blade, often unit is forced to be unable to operate normally.In conclusion existing blast furnace top pressure recycling
The defects of turbine power generator efficiency is low, and service life is short.
Utility model content
Technical problem to be solved in the utility model is that the TRT turbines of middle steel mill for the above-mentioned prior art are deposited
Defect, a kind of TRT turbines with wear-resistant anti-corrosion nano coating are provided.
To achieve the above object, the utility model uses following technical scheme：
The first aspect of the utility model is to provide a kind of TRT turbines with wear-resistant anti-corrosion nano coating,
Including TRT moving vane of turbine and stator blade, the outer surface of the TRT moving vane of turbine and stator blade is both provided with one layer and receives
Rice protective layer.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, the movable vane piece surface
Nanometer protective layer use plasma spraying WC nano ceramic material coatings.
Further preferably, on the TRT turbines with wear-resistant anti-corrosion nano coating, the movable vane
The thickness of the nanometer protective layer on piece surface is 200-300 μm.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, the stator blade surface
Nanometer protective layer use supersonic spray coating nano ceramics-metallic composite Co-WC coatings.
Further preferably, on the TRT turbines with wear-resistant anti-corrosion nano coating, the stator blade
The thickness of the nanometer protective layer on piece surface is 150-240 μm.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, the TRT turbines
Turbine is divided into 2 grades the stator blade of 2 grades of adjustable-angles (i.e. 2 grades of movable vane pieces), wherein：
1st grade of stator blade the piece number：20-30 pieces；2nd grade of stator blade the piece number：20-30 pieces；
1st grade of movable vane the piece number：20-30 pieces；2nd grade of movable vane the piece number：20-30 pieces.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, the nanometer applies protection
Layer be it is a kind of using prepared by Nano-Ceramic Composites have wear-resistant, acid-alkali-corrosive-resisting, high temperature resistant, the nanometer of anti-cavitation
The functional coating of structure.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, the nanometer protective layer
To be doped with the nano lanthanum oxide (La that grain size is 60-100nm2O3) particle composite coating, the nano lanthanum oxide particle adds
Dosage is the 3-10% of composite coating.
It is further preferred that the nanometer protective layer on the movable vane piece surface use plasma spraying doping 8-10% grain sizes for
The WC nano ceramic material coatings of the nano lanthanum oxide particle of 60-100nm.
It is further preferred that the nanometer protective layer on the stator blade surface use supersonic spray coating doping 3-5% grain sizes for
The nano ceramics of the nano lanthanum oxide particle of 60-100nm-metallic composite Co-WC coatings.
Further, on the TRT turbines with wear-resistant anti-corrosion nano coating, movable vane piece, stator blade
Different use demands prepares nano coating using different original materials, technology, to reach the synthesis usability of wind turbine
Can, resist the failure under operating condition.
The utility model is had the following technical effect that compared with prior art using above-mentioned technical proposal：
TRT turbines provided by the utility model with wear-resistant anti-corrosion nano coating, by TRT turbines
Movable vane and stator blade surface the layer protective layer that is made of nano material is set, service life was up to 36 months or more, and thoroughly
Flat machine does not have to scrap, while improving generated energy；It is significantly longer than the service life of TRT turbines in the prior art and using effect
Fruit；And allow the prolonged continue working of TRT turbines, production cost is reduced, is improved work efficiency, is improved existing
There is the defect of technology.
Description of the drawings
Fig. 1 is movable vane piece, the stator blade chip architecture for the TRT turbines that the utility model has wear-resistant anti-corrosion nano coating
Figure；
Fig. 2 is the plan structure of the movable vane piece for the TRT turbines that the utility model has wear-resistant anti-corrosion nano coating
Figure；
Fig. 3 is the structure chart of the wear-resistant anti-corrosion nano coating of the preferred embodiment in the utility model.
Specific implementation mode
The utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With novel, but following embodiments are not intended to limit the scope of the utility model.
As shown in Figs. 1-2, the utility model embodiment provides a kind of TRT with wear-resistant anti-corrosion nano coating
The movable vane piece 3 being set on turbine, including TRT turbines on main shaft 1 and the stator blade 4 being arranged on casing 2, TRT turbines
The outer surface of movable vane piece 3 and stator blade 4 on machine is both provided with one layer of nanometer protective layer 5, this nanometer of stopping off 5 is that one kind is adopted
Have the function of wear-resistant, acid-alkali-corrosive-resisting, high temperature resistant, the nanostructure of anti-cavitation with prepared by Nano-Ceramic Composites
Property coating.This nanometer of protective layer 5 has good wear-resistant, corrosion-resistant, high temperature resistant, the performance of anti-cavitation, in TRT turbines
Movable vane piece 3 and 4 outer surface of stator blade can be such that the service life for putting down saturating machine reaches 36 months or more plus after nanometer protective layer 5,
Be significantly longer than the service life that TRT in the prior art puts down machine so that TRT turbines can prolonged continue working, reduce
Production cost, improves work efficiency, improves the defect of the prior art.
On the TRT turbines that the utility model has wear-resistant anti-corrosion nano coating, movable vane piece 3, stator blade 4 are different
Use demand nano coating is prepared using different original materials, technology, to reach the synthesis performance of wind turbine, support
Failure under imperial operating condition.The technology for meeting TRT harshnesses is needed to require as follows：1), blade spraying process does not allow to blade
Root and other positions generate secondary stress；2) original for destroying blade profile and blade curve, is not allowed after spraying
Design accuracy；3), turbine will not cause blade coatings to fall off at normal operation (n=3000rpm)；4), ensure that blade exists
Reliable and stable in operation, safety.
On the basis of above-mentioned technical proposal, on the TRT turbines with wear-resistant anti-corrosion nano coating, TRT
Turbine turbine is divided into 2 grades, i.e. 2 grades of movable vane pieces, 2 grades of adjustable-angles stator blade, wherein：1st grade of stator blade the piece number：20-
30；2nd grade of stator blade the piece number：20-3 pieces；1st grade of movable vane the piece number：20-3 pieces；2nd grade of movable vane the piece number：20-3 pieces.
As a preferred embodiment of the utility model, in the TRT turbines with wear-resistant anti-corrosion nano coating
On machine, the nanometer protective layer on 3 surface of movable vane piece uses plasma spraying WC nano ceramic material coatings, 3 surface of movable vane piece
The thickness of nanometer protective layer is 200-300 μm, preferably 220-280 μm, more preferably 240-260 μm.Further, since WC's is anti-
Energy of oxidation force difference, therefore the good metal alloy powders of antioxygenic property (such as cobalt-based, Ni-based) can be used and do wrapping layer or bonding
Phase improves the antioxygenic property of the WC nano ceramics protective layers with this.
As another preferred embodiment of the utility model, as shown in figure 3, wear-resistant in having for the TRT turbines
Further include metal back layer 7, the intermediate layer for being sprayed on 3 surface of movable vane piece successively on the TRT turbines of anti-corrosion nano coating
6, metal back layer 7 is 0Cr using the Ni sills for including Ni, Cr, Al, such as trade mark17Ni7Al materials；Intermediate layer 6 is using packet
The Ni sills of Ni, Cr, Al, W are included, thickness is respectively 80-100 μm, 50-80 μm, such as Ni-Al-Hf-Cr-W systems alloy material
Matter, the Ni sills employed in the utility model are commercially available；And WC nano ceramic materials are then sprayed on intermediate layer 6
Upper surface.
Plasma spraying technology used by the present embodiment is a kind of technology of material surface strengthening and surface modification, it is adopted
It uses plasma-arc as heat source, the materials such as ceramics, alloy, metal is heated to melting or semi-molten state, and to spray at a high speed
The superficial layer of adhesion-tight is formed to by pretreated workpiece surface, assigns that matrix surface is wear-resisting, anti-corrosion, high temperature resistant oxygen
The performances such as change, electrical isolation, heat-insulated, radiation protection, anti-attrition and sealing.The technical characterstic is mainly manifested in：Superelevation temperature characteristics, convenient for into
The speed of the spraying of row materials with high melting point, jet particle is high, and coating is fine and close, and adhesion strength is high, using inert gas as work
Gas, sprayed on material is not oxidizable, and work efficiency is high, and substrate temperature is low, and matrix is without deformation.Pass through the control of plasma process condition
System reaches the high-bond with base material, and the process conditions of spraying include hydrogen and argon flow amount, spray distance, spray angle, confession
The control of powder rate and the flow of carrier gas, the power of electric arc, the adjusting control of Current Voltage, the flow of plasma water and substrate temperature
System, to prepare high-bond, high abrasion, the protective layer for fully meeting requirement.
As another more preferred embodiment of the utility model, with wear-resistant anti-corrosion nano coating
On TRT turbines, the nanometer protective layer 5 on 4 surface of stator blade uses supersonic spray coating nano ceramics-metallic composite Co-WC,
The thickness of the nanometer protective layer on the stator blade surface is 150-240 μm, preferably 160-210 μm, more preferably 180-200 μm.
Nano ceramics-metallic composite Co-WC powder that the present embodiment uses is by WC nano-particles and Co metal phases
The alloy form of formation, prepared coating have high rigidity, high-wearing feature, corrosion resistance, high tenacity etc..The coating is hard
While degree improves, toughness also improves therewith.Using supersonic spray coating technology, reached and base material by the control of process conditions
High-bond reaches the high-bond with base material by the control of process conditions, and the technological parameter of spraying includes oxygen and nitrogen
Ratio and total flow, the flow of kerosene stock, powder supply rate and carrier gas condition, spray distance, spray angle and matrix temperature
Control, prepares the coating of excellent combination property, resists the failure of blade in the work environment.
As one preferred embodiment of the utility model, the nanometer protective layer is 60-100nm to be doped with grain size
Nano lanthanum oxide (La2O3) particle composite coating, by weight percentage, the additive amount of the nano lanthanum oxide particle is
The 3-10% of composite coating, before and after the composite coating high temperature friction and wear that dopen Nano lanthana is characterized using X-ray diffraction
Micro-structure, in conjunction with the friction and wear mechanics of composite coating, result of study shows using the nano oxidized La doped of plasma spraying
The movable vane piece of WC nano ceramic materials, the hardness and abrasion resistance properties of the composite coating on surface are in nano lanthanum oxide granule content
It is preferable when being 6.5%, friction coefficient 0.12；It is multiple using supersonic spray coating nano lanthanum oxide particle dopen Nano ceramic-metal
The stator blade of condensation material Co-WC, the hardness and abrasion resistance properties of the composite coating on surface are in nano lanthanum oxide granule content
It is preferable when 3.5%, friction coefficient 0.1.By introducing nanometer La2O3Particle can effectively improve rubbing for movable vane piece and stator blade
It wipes and learns performance, abrasion mechanism is mainly the synergic wear that abrasive wear, adhesive wear and oxidation corrosion resistant are worn.
Have the TRT turbines of wear-resistant anti-corrosion nano coating as test group using the utility model, with uncoated wear-resisting
The TRT turbines of corrosion-resistant finishes are control group, carry out corrosion-resistant, abrasion resistance properties test respectively：
Without spray coated blade run 10 months it is offline after corrosion, wear situation it is found that blade overlook, abrasion it is tight
Weight, unit have been unable to operate normally so that the blast furnace top pressure recovery gas turbine machine of existing uncoated abrasion-proof corrosion-proof erosion resisting coating generates electricity
Unit efficiency is low, and service life is short etc..
Blade situation when being overhauled after using the utility model there is the blade of abrasion-proof corrosion-proof erosion resisting coating to run 12 months can
Know, for blade surface without apparent corrosion and wear phenomenon, blade is intact, can be continuing with, and service life is by existing 7-10
The moon is increased to 36 months or more, and turbine does not have to scrap, while improving generated energy.
Specific embodiment of the utility model is described in detail above, but it is intended only as example, this practicality is new
Type is not restricted to particular embodiments described above.To those skilled in the art, any that the utility model is carried out
Equivalent modifications and substitute also all among the scope of the utility model.Therefore, in the spirit and model for not departing from the utility model
Impartial conversion and modification made by under enclosing, should all cover in the scope of the utility model.
Claims (6)
1. a kind of TRT turbines with wear-resistant anti-corrosion nano coating, including TRT put down movable blade and stator blade,
It is characterized in that, the outer surface of the TRT moving vane of turbine and stator blade is both provided with one layer of nanometer protective layer.
2. the TRT turbines according to claim 1 with wear-resistant anti-corrosion nano coating, which is characterized in that described
The nanometer protective layer on movable vane piece surface uses plasma spraying WC nano ceramic materials.
3. the TRT turbines according to claim 2 with wear-resistant anti-corrosion nano coating, which is characterized in that described
The thickness of the nanometer protective layer on movable vane piece surface is 200-300 μm.
4. the TRT turbines according to claim 1 with wear-resistant anti-corrosion nano coating, which is characterized in that described
The nanometer protective layer on stator blade surface uses supersonic spray coating nano ceramics-metallic composite Co-WC.
5. the TRT turbines according to claim 4 with wear-resistant anti-corrosion nano coating, which is characterized in that described
The thickness of the nanometer protective layer on stator blade surface is 150-240 μm.
6. the TRT turbines according to claim 1 with wear-resistant anti-corrosion nano coating, which is characterized in that described
TRT turbine turbines are divided into 2 grades, wherein：
1st grade of stator blade the piece number：20-30 pieces；2nd grade of stator blade the piece number：20-30 pieces；
1st grade of movable vane the piece number：20-30 pieces；2nd grade of movable vane the piece number：20-30 pieces.
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| CN201721628335.3U CN207660649U (en) | 2017-11-29 | 2017-11-29 | A kind of TRT turbines with wear-resistant anti-corrosion nano coating |
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| CN201721628335.3U CN207660649U (en) | 2017-11-29 | 2017-11-29 | A kind of TRT turbines with wear-resistant anti-corrosion nano coating |
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| CN107725116A (en) * | 2017-11-29 | 2018-02-23 | 上海英佛曼纳米科技股份有限公司 | A kind of TRT turbines with wear-resistant anti-corrosion nano coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107725116A (en) * | 2017-11-29 | 2018-02-23 | 上海英佛曼纳米科技股份有限公司 | A kind of TRT turbines with wear-resistant anti-corrosion nano coating |
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