CN111472991A - Wear-resistant coating structure for water pump blade of furnace - Google Patents
Wear-resistant coating structure for water pump blade of furnace Download PDFInfo
- Publication number
- CN111472991A CN111472991A CN201911342480.9A CN201911342480A CN111472991A CN 111472991 A CN111472991 A CN 111472991A CN 201911342480 A CN201911342480 A CN 201911342480A CN 111472991 A CN111472991 A CN 111472991A
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- China
- Prior art keywords
- pump blade
- resistant coating
- semicircular
- corrosion
- wear
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- 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
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- 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
- F04D29/24—Vanes
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- 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A wear-resistant coating structure of a furnace water pump blade. Coating a layer of corrosion-resistant coating on a pump blade substrate, wherein a plurality of semicircular bulges are fully distributed on the corrosion-resistant coating, the diameters of the semicircular bulges are set to be between 1 and 2nm, gaps are reserved among the semicircular bulges, and the area of each gap is between 0.09 and 0.36nm2The depth of the gap is not more than 3nm and not less than 1.5nm as measured from the top of the semicircular projection. The invention utilizes the semicircular bulges and the gaps among the semicircular bulges to form a layer of air film at ordinary times or during working, and air in the gaps forms a relatively stable closed space, so that impurities can be less close to the corrosion-resistant coating of the pump blade, thereby reducing the abrasion of the impurities to the pump blade and greatly prolonging the service life of the pump blade.
Description
Technical Field
The invention relates to the technical field of circulating pumps, in particular to a wear-resistant coating structure of a furnace water pump blade.
Background
The boiler water circulating pump is a large-flow, low-lift single-stage centrifugal pump which is arranged in a boiler evaporation system and bears high temperature and high pressure to make working media perform forced flow, and structurally comprises a pump shell, pump blades, a bearing and a heat insulator. Boiler water circulation pumps are commonly used in start-up systems for forced circulation drum boilers and once-through boilers. A pump housing and an impeller. The pump casing is a hemispherical structure, and is characterized by that its wall thickness is small, its correspondent thermal stress is small, and the pump blade is a high-specific revolution centrifugal type, close to mixed flow type single-stage centrifugal pump, and the outlet of pump blade is equipped with pump blade to make partial kinetic energy be converted into pressure energy. Therefore, the pump blade is a critical structure, because the furnace water contains many impurities, and some hard impurities, the pump blade is impacted or rubbed by many impurities in the working process, so the pump blade is easily damaged, and the loss and the reduction of the working efficiency are caused.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a furnace water pump blade wear-resistant coating structure, which utilizes semicircular bulges and gaps among the semicircular bulges to form a layer of air film at ordinary times or during working, and air in the gaps forms a relatively stable closed space, so that impurities can be less close to a pump blade corrosion-resistant coating, thereby reducing the wear of the pump blade caused by the impurities and greatly prolonging the service life of the pump blade.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a furnace water pump blade wear-resistant coating structure, which adopts the following scheme:
coating a layer of corrosion-resistant coating on a pump blade substrate, wherein a plurality of semicircular bulges are fully distributed on the corrosion-resistant coating, the diameters of the semicircular bulges are set to be between 1 and 2nm, gaps are reserved among the semicircular bulges, and the area of each gap is between 0.09 and 0.36nm2The depth of the gap is not more than 3nm and not less than 1.5nm as measured from the top of the semicircular projection.
The invention has the beneficial effects that:
the invention utilizes the semicircular bulges and the gaps among the semicircular bulges to form a layer of air film at ordinary times or during working, and air in the gaps forms a relatively stable closed space, so that impurities can be less close to the corrosion-resistant coating of the pump blade, thereby reducing the abrasion of the impurities to the pump blade and greatly prolonging the service life of the pump blade.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to an embodiment of the invention, a furnace water pump vane wear-resistant coating structure is provided.
Referring to fig. 1, the scheme is as follows:
a layer of corrosion-resistant coating is coated on a pump blade substrate, a plurality of semicircular protrusions 1 are fully distributed on the corrosion-resistant coating, the diameter of each semicircular protrusion 1 is set to be 1-2nm, gaps 2 are reserved among the semicircular protrusions 1, and the area of each gap 2 is 0.09-0.36nm2The depth of the gap 2 is not more than 3nm and not less than 1.5nm from the top of the semicircular protrusion 1, the invention utilizes the semicircular protrusion 1 and the gap 2 between the semicircular protrusions to form a layer of gas film at ordinary times or during working, when the pump blade works, when the furnace water carries impurities to be close to the surface of the pump blade, the gas film can form a layer of protective film because the surface tension of the furnace water is larger than that of the common water, and the air in the gap forms a relatively stable closed space to repel the close furnace water, so that the impurities can be hardly close to the corrosion-resistant coating of the pump blade, the abrasion of the impurities to the pump blade is reduced, and the service life of the pump blade is greatly prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A wear-resistant coating structure of a furnace water pump vane is characterized in that a corrosion-resistant coating is coated on a pump vane substrate, a plurality of semicircular bulges are distributed on the corrosion-resistant coating, the diameters of the semicircular bulges are 1-2nm, and each semicircular bulge isGaps are left between the two, and the area of the gaps is between 0.09 and 0.36nm2The depth of the gap is not more than 3nm and not less than 1.5nm as measured from the top of the semicircular projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911342480.9A CN111472991A (en) | 2019-12-24 | 2019-12-24 | Wear-resistant coating structure for water pump blade of furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911342480.9A CN111472991A (en) | 2019-12-24 | 2019-12-24 | Wear-resistant coating structure for water pump blade of furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111472991A true CN111472991A (en) | 2020-07-31 |
Family
ID=71744983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911342480.9A Pending CN111472991A (en) | 2019-12-24 | 2019-12-24 | Wear-resistant coating structure for water pump blade of furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111472991A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000205181A (en) * | 1999-01-11 | 2000-07-25 | Shimadzu Corp | Vacuum pump |
| EP2241648A3 (en) * | 2009-04-17 | 2011-11-30 | United Technologies Corporation | Abrasive thermal coating |
| CN102865243A (en) * | 2012-10-15 | 2013-01-09 | 江苏大学 | Abrasion-resistant heat shock resistant impeller type fluid mechanical blade and preparation method |
| CN109023449A (en) * | 2018-08-21 | 2018-12-18 | 河北科技师范学院 | A kind of preparation method and applications of super-hydrophobic coating material, super-hydrophobic coating material |
| CN109578322A (en) * | 2018-12-29 | 2019-04-05 | 安徽银龙泵阀股份有限公司 | A kind of wear resistant corrosion resistant centrifugation impeller of pump |
-
2019
- 2019-12-24 CN CN201911342480.9A patent/CN111472991A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000205181A (en) * | 1999-01-11 | 2000-07-25 | Shimadzu Corp | Vacuum pump |
| EP2241648A3 (en) * | 2009-04-17 | 2011-11-30 | United Technologies Corporation | Abrasive thermal coating |
| CN102865243A (en) * | 2012-10-15 | 2013-01-09 | 江苏大学 | Abrasion-resistant heat shock resistant impeller type fluid mechanical blade and preparation method |
| CN109023449A (en) * | 2018-08-21 | 2018-12-18 | 河北科技师范学院 | A kind of preparation method and applications of super-hydrophobic coating material, super-hydrophobic coating material |
| CN109578322A (en) * | 2018-12-29 | 2019-04-05 | 安徽银龙泵阀股份有限公司 | A kind of wear resistant corrosion resistant centrifugation impeller of pump |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200731 |