CN107061298A - A kind of nanometer metal ceramic desulfurization slurry circulating pump - Google Patents
A kind of nanometer metal ceramic desulfurization slurry circulating pump Download PDFInfo
- Publication number
- CN107061298A CN107061298A CN201710452004.7A CN201710452004A CN107061298A CN 107061298 A CN107061298 A CN 107061298A CN 201710452004 A CN201710452004 A CN 201710452004A CN 107061298 A CN107061298 A CN 107061298A
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- China
- Prior art keywords
- circulating pump
- impeller
- wheel
- powder
- metal ceramic
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
- F04D29/2227—Construction and assembly for special materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of nanometer metal ceramic desulfurization slurry circulating pump is disclosed, the circulating pump includes impeller, water inlet pipe, outlet pipe and water pump cover, and the impeller includes multiple blades, wheel cap and wheel hub.By the way that the mixed-powder cladding of following mass percents is formed into wearing layer on the surface of impeller using laser melting and coating technique or vacuum-sintering on the surface of all parts of impeller：10.0% 20.0% silicon nitride, 10.0% 20.0% carborundum, 5.0% 15.0% zirconium dioxide, 0.1% 0.5% rare earth.Invention significantly improves the wearability of circulating pump impeller and corrosion resistance, the service life of circulating pump impeller is added.
Description
Technical field
The present invention relates to mechanical field, and in particular to a kind of nanometer metal ceramic desulfurization slurry circulating pump.
Background technology
Desulfurization slurry circulating pump is one of very important equipment in steam power plant's desulphurization system equipment.The effect of circulating pump is
The mixed serum in absorption tower in collecting pit is continuously conveyed upwards into spraying layer, and work pressure is provided for atomizer
Power, makes slurries by being atomized as far as possible after nozzle, to make droplet and up flue gas is fully contacted, makes two in flue gas
Sulfur oxide is absorbed completely.Desulfurization slurry circulating pump is mainly sour corrosion, abrasion and cavitation erosion by slurries so that circulating pump
Life-span rapidly reduce, especially core part impeller, service life is 1 year or so.Although anti-wear using excessively various surfaces
Measure such as built-up welding, spraying, surfacing, coating high molecular abrasion-proof material etc., service life is also difficult to be significantly improved.It is the more commonly used
Method in, with built-up welding using relatively more, effect can still, typically use more than 1 year without large area repairing, and it is scarce
Point is due to built-up welding input amount of heat, if control is bad, impeller can be caused to deform, and can not repeatedly repair and use.
The content of the invention
In view of this, the present invention provides a kind of nanometer metal ceramic desulfurization slurry circulating pump, can improve circulating pump impeller
Wearability and corrosion resistance, increase circulating pump service life.
The present invention provides a kind of nanometer metal ceramic desulfurization slurry circulating pump, including impeller, water inlet pipe, outlet pipe and water pump
Housing, the impeller includes：
Wheel cap；
Multiple blades, the wheel is arranged in the way of circumferential arrangement and is covered；And,
Wheel hub, is connected with the wheel cap, and mounting hole is provided with the wheel hub；
Wherein, the surface of the impeller is provided with the wearing layer of predetermined thickness, and the wearing layer passes through laser melting and coating technique
Or vacuum-sintering forms the mixed-powder cladding of following mass percents on the surface of the impeller：10.0%-20.0%
Silicon nitride, 10.0%-20.0% carborundum, 5.0%-15.0% zirconium dioxide, 0.1%-0.5% rare earth.
Preferably, the mixed-powder also includes iron powder.
Preferably, in the mixed-powder alpha-silicon nitride powders, silicon carbide powder, Zirconium dioxide powder, rare earth powder be
Nanometer crystal powder.
Preferably, the temperature of the vacuum-sintering is 1500-1600 DEG C.
Preferably, the laser power of the laser cladding equipment is that 800W-1200W, spot diameter are 0.3-3mm, cladding
Speed is Φ 3mm × (0-12) HZ/S.
Preferably, the multiple blade is arranged at the wheel cap and the space of wheel hub formation；
Wherein, the first side of the multiple blade is connected with the wheel cap, the second side of the multiple blade and institute
State the side connection of wheel hub.
Preferably, multiple connecting holes are additionally provided with the wheel hub, the connecting hole is uniformly distributed in the wheel hub
Top surface.
The present invention provides a kind of nanometer metal ceramic desulfurization slurry circulating pump, and the circulating pump includes impeller, water inlet pipe, gone out
Water pipe and water pump cover, the impeller include multiple blades, wheel cap and wheel hub.By in the surface of all parts of impeller profit
The mixed-powder cladding of following mass percents is formed wear-resisting on the surface of impeller with laser melting and coating technique or vacuum-sintering
Layer：10.0%-20.0% silicon nitride, 10.0%-20.0% carborundum, 5.0%-15.0% zirconium dioxide, 0.1%-
0.5% rare earth.Invention significantly improves the wearability of circulating pump impeller and corrosion resistance, the use of circulating pump impeller is added
Life-span.
Brief description of the drawings
By description referring to the drawings to the embodiment of the present invention, above-mentioned and other purpose of the invention, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the schematic diagram of the desulfurization slurry circulating pump of the embodiment of the present invention；
Fig. 2 is the schematic perspective view of the impeller of the embodiment of the present invention.
Embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in the detailed description of the present invention.Do not have for a person skilled in the art
The description of these detail sections can also understand the present invention completely.In order to avoid obscuring the essence of the present invention, known method, mistake
Journey, flow, element and circuit do not have detailed narration.
In addition, it should be understood by one skilled in the art that provided herein accompanying drawing be provided to explanation purpose, and
What accompanying drawing was not necessarily drawn to scale.
Unless the context clearly requires otherwise, otherwise entire disclosure is similar with the " comprising " in claims, "comprising" etc.
Word should be construed to the implication included rather than exclusive or exhaustive implication；That is, being containing for " including but is not limited to "
Justice.
In the description of the invention, it is to be understood that term " first ", " second " etc. be only used for describe purpose, without
It is understood that to indicate or imply relative importance.In addition, in the description of the invention, unless otherwise indicated, the implication of " multiple "
It is two or more.
Unless otherwise clearly defined and limited, the term such as term " installation ", " connected ", " connection ", " fixation " should be done extensively
Reason and good sense solution, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect, can also
It is electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be two element internals connection or
The interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, Ke Yigen
Understand the concrete meaning of above-mentioned term in the present invention according to concrete condition.
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
The nanometer metal ceramic desulfurization slurry circulating pump of the present invention as described in Figure 1, including water inlet pipe A, impeller B, water pump shell
Body C and outlet pipe D.Slurries are entered in water pump cover C by water inlet pipe A, then by impeller B, drive backspins of the impeller B in motor
Turn, make slurries by centrifugal force, improve the mechanical energy of slurries, and slurries are delivered up by outlet pipe D to circulating pump
Spraying layer, and provide operating pressure for atomizer, makes slurries by being atomized as far as possible after nozzle, to make droplet and upper
Capable flue gas is fully contacted, and the sulfur dioxide in flue gas is absorbed completely.
Impeller B is as the power supply device of desulfurization slurry circulating pump, and its schematic perspective view is as shown in Fig. 2 impeller includes：Wheel cap
1st, blade 2 and wheel hub 3.Wherein, wheel cap 1 includes the first wheel cap 11 and the second wheel cap 12, and the first wheel cap 11 is set to circular ring structure,
The inner port edge of the circular ring structure is provided with annular boss, spacing for being carried out with other attachment structures.Second wheel cap 12 is set
Cylindrical structure is set to, the external profile diameter of the second wheel cap 12 is identical with the external profile diameter of the first wheel cap 11.Those skilled in the art
It should be understood that the external profile diameter of second wheel cap 12 can also be different from the external profile diameter of the first wheel cap 11, you can be second
The external profile diameter of external profile diameter or the first wheel cap 11 that the external profile diameter of wheel cap 12 is more than the first wheel cap 11 is more than second
The external profile diameter of wheel cap 12.Accommodation space is formed between first wheel cap 11 and the second wheel cap 12.The quantity of blade 2 to be multiple,
It is shaped to arc flake structure, is uniformly arranged on first wheel cap 11 and described the in the way of circumferential arrangement respectively
In the accommodation space of two wheel caps 12 formation, it can also be set in other irregular modes.The first side of blade 2 and the wheel
Lid 12 is connected, and the second side of blade 2 is connected with the side of the wheel hub 3.The outer arcuate curved surface of blade 2 and the part of wheel cap 11
Connection.Multiple blades 2 can be connected with the first wheel cap 11, the second wheel cap 12 in identical angle of inclination, it can also be provided that not
Same angle of inclination is attached；The shape of blade 2 may be arranged as rectangular tab structure or wing blades, as long as shape
Into impeller can be provided for circulating pump kinetic energy, i.e. impeller can as circulating pump power supply device.
Wheel hub 3 is arranged at multiple blades 2 and in the space of second wheel cap 12 formation, the second wheel cap 12 is fixed in bottom
On.The wheel hub 3 is set to frustum cone structure, and the round platform refers to remove truncated cone with a plane parallel to circular cone bottom surface,
Part between bottom surface and section is called round platform.The height of the wheel hub 3 is less than between the first wheel cap 11 and the second wheel cap 12
Distance, the i.e. top surface of wheel hub 3 are no more than the first wheel cap 11.The top surface of wheel hub 3 is provided with mounting hole 31, and the mounting hole 32 is logical
Hole, and the second wheel cap 12 described in insertion, for connecting motor or other structures, rotate its impeller 2 so that circulating pump
Being capable of normal work.The top surface of wheel hub 3 is additionally provided with multiple connecting holes 32, and uniformly distribution is looped around mounting hole 31 to connecting hole 32
Outside, in that context it may be convenient to connect other equipment.
The surface of impeller of the present invention is additionally provided with the wearing layer 4 of predetermined thickness, and the thickness of wearing layer 4 is according to reality
Demand is configured.The wearing layer 4 includes the mixed-powder of following mass percent：10.0%-20.0% silicon nitride,
10.0%-20.0% carborundum, 5.0%-15.0% zirconium dioxide, 0.1%-0.5% rare earth.The mixed-powder is also
Including iron powder.Certain toughener is also added with wearing layer, the fragility of wearing layer can be reduced and the anti-impact of wearing layer is improved
Hit performance.Alpha-silicon nitride powders, silicon carbide powder, Zirconium dioxide powder, the rare earth powder contained in the mixed-powder is to receive
Rice crystalline flour, nanometer crystal powder is to prepare to be formed using low temperature, surfactant auxiliary externally-applied magnetic field high-energy ball-milling process；The mixing
Powder is uniformly laid in the surface of impeller, passes through laser melting and coating technique or vacuum-sintering so that the mixed-powder and institute
The surface cladding of impeller is stated, and nanometer metal ceramic face coat is formed after rapid solidification, so as to significantly improve impeller surface
The performance such as wear-resisting, anti-corrosion.The temperature of vacuum-sintering is 1500-1600 DEG C.The laser power of used laser cladding equipment
Scope can be that 800W-1200W, spot diameter are that 0.3-3mm, cladding speed are Φ 3mm × (0-12) HZ/S.
The present invention provides a kind of nanometer metal ceramic desulfurization slurry circulating pump, and the circulating pump includes impeller, water inlet pipe, gone out
Water pipe and water pump cover, the impeller include multiple blades, wheel cap and wheel hub.By in the surface of all parts of impeller profit
The mixed-powder cladding of following mass percents is formed wear-resisting on the surface of impeller with laser melting and coating technique or vacuum-sintering
Layer：10.0%-20.0% silicon nitride, 10.0%-20.0% carborundum, 5.0%-15.0% zirconium dioxide, 0.1%-
0.5% rare earth.Invention significantly improves the wearability of circulating pump impeller and corrosion resistance, the use of circulating pump impeller is added
Life-span.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various changes and change.It is all any modifications made within spirit and principles of the present invention, equivalent
Replace, improve etc., it should be included in the scope of the protection.
Claims (7)
1. a kind of nanometer metal ceramic desulfurization slurry circulating pump, including impeller, water inlet pipe, outlet pipe and water pump cover, the leaf
Wheel includes：
Wheel cap；
Multiple blades, the wheel is arranged in the way of circumferential arrangement and is covered；And,
Wheel hub, is connected with the wheel cap, and mounting hole is provided with the wheel hub；
Wherein, the surface of the impeller is provided with the wearing layer of predetermined thickness, the wearing layer by laser melting and coating technique or
Vacuum-sintering forms the mixed-powder cladding of following mass percents on the surface of the impeller：10.0%-20.0% nitrogen
SiClx, 10.0%-20.0% carborundum, 5.0%-15.0% zirconium dioxide, 0.1%-0.5% rare earth.
2. nanometer metal ceramic desulfurization slurry circulating pump according to claim 1, it is characterised in that the mixed-powder is also
Including iron powder.
3. nanometer metal ceramic desulfurization slurry circulating pump according to claim 2, it is characterised in that in the mixed-powder
Alpha-silicon nitride powders, silicon carbide powder, Zirconium dioxide powder, rare earth powder be nanometer crystal powder.
4. nanometer metal ceramic desulfurization slurry circulating pump according to claim 1, it is characterised in that the vacuum-sintering
Temperature is 1500-1600 DEG C.
5. nanometer metal ceramic desulfurization slurry circulating pump according to claim 1, it is characterised in that the laser melting coating is set
Standby laser power is that 800W-1200W, spot diameter are that 0.3-3mm, cladding speed are Φ 3mm × (0-12) HZ/S.
6. nanometer metal ceramic desulfurization slurry circulating pump according to claim 1, it is characterised in that the multiple blade is set
It is placed in the wheel cap and the space of wheel hub formation；
Wherein, the first side of the multiple blade is connected with the wheel cap, the second side of the multiple blade and the wheel
The side connection of hub.
7. nanometer metal ceramic desulfurization slurry circulating pump according to claim 1, it is characterised in that also set on the wheel hub
Multiple connecting holes are equipped with, the connecting hole is uniformly distributed in the top surface of the wheel hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452004.7A CN107061298A (en) | 2017-06-15 | 2017-06-15 | A kind of nanometer metal ceramic desulfurization slurry circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452004.7A CN107061298A (en) | 2017-06-15 | 2017-06-15 | A kind of nanometer metal ceramic desulfurization slurry circulating pump |
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| Publication Number | Publication Date |
|---|---|
| CN107061298A true CN107061298A (en) | 2017-08-18 |
Family
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|---|---|---|---|
| CN201710452004.7A Pending CN107061298A (en) | 2017-06-15 | 2017-06-15 | A kind of nanometer metal ceramic desulfurization slurry circulating pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
| CN109988993A (en) * | 2019-03-18 | 2019-07-09 | 安徽省皖江机电设备制造有限公司 | A kind of high-wear-resistancehigh-strength high-strength pick and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
| CN109988993A (en) * | 2019-03-18 | 2019-07-09 | 安徽省皖江机电设备制造有限公司 | A kind of high-wear-resistancehigh-strength high-strength pick and preparation method thereof |
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Application publication date: 20170818 |