CN201425026Y - Corrosion-resistant circulating water pump - Google Patents
Corrosion-resistant circulating water pump Download PDFInfo
- Publication number
- CN201425026Y CN201425026Y CN2009200267178U CN200920026717U CN201425026Y CN 201425026 Y CN201425026 Y CN 201425026Y CN 2009200267178 U CN2009200267178 U CN 2009200267178U CN 200920026717 U CN200920026717 U CN 200920026717U CN 201425026 Y CN201425026 Y CN 201425026Y
- Authority
- CN
- China
- Prior art keywords
- circulating water
- pump
- corrosion
- water pump
- stainless steel
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The utility model discloses a corrosion-resistant circulating water pump. Because a pump body and a pump cover are provided with inner stainless steel coating, the circulating water can corrode a pumpshell at lower speed, and thereby the service life of the circulating water pump is effectively prolonged. The structure of the circulating water pump is as follows: the abrasion-resistant corrosion-resistant coating is sprayed on the inner walls of the pump shell and/or the pump cover of the pump body.
Description
Technical field
The utility model relates to a kind of corrosion-resistant circulating water pump of thermal power generation station-service of doing circulating water with middle water, seawater, sewage.
Background technique
At present, power plant is made up of the pump housing, pump cover, impeller, axle etc. with circulating water pump.Because the working medium of water pump is middle water, seawater etc., operating conditions is more abominable, easily produces wearing and tearing and corrosion, therefore material property is had certain requirement.General pump shaft, axle sleeve, impeller can adopt stainless steel, and the pump housing and pump cover are bigger owing to volume, and main employing can be produced in a large number, and technology is simple, the cast iron that cheaply is easy to get.But the corrosion resistance of cast iron is relatively poor, perishable, and stainless steel has enough oxygen to keep passivation in circulating water media such as the middle water that flows, seawater, effectively reduced corrosion rate, corrosion resistance is significantly better than cast iron, therefore pump case damage earlier in use easily takes place in circulating water pump, causes circulating water pump to scrap.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, and a kind of corrosion-resistant circulating water pump is provided, and by to the pump housing and pump cover inner liner stainless steel coating, alleviates the rate of corrosion of circulating water to pump case, effectively improves the working life of circulating water pump.
The purpose of this utility model is achieved in that
A kind of corrosion-resistant circulating water pump, it comprises the pump housing, at the pump case and/or the pump cover inner-wall spraying of the pump housing abrasionproof anti-corrosion layer is arranged.
Described wear-resistance and anti-corrosion layer is Stainless Steel Wire sprayfused coating or Stainless Steel Powder sprayfused coating.
The utility model adopts the method for electric arc spraying, at gray cast iron circulating water pump inner walls spraying one deck stainless steel coating with Stainless Steel Wire (304 or 1Cr18Ni9Ti); Or with powder of stainless steel (304 or 1Cr18Ni9Ti), adopt the method for flame powder spray fusing and remelting, and spraying one deck stainless steel coating in gray cast iron circulating water pump inner walls, coating thickness is 0.10～1.0mm.
Water pump cover inner liner stainless steel coating can effectively reduce corrosion rate, reason be 304 and 1Cr18Ni9Ti be Austenitic Stainless Steel, have good corrosion resistance, in the circulating water that flows, have enough oxygen to keep its passivation.In the seawater that flows, the corrosion rate＜0.04mm/a of stainless steel coating in seawater, and the corrosion rate＞0.16mm/a of gray cast iron; Corrosion rate＜the 0.05mm/a of stainless steel coating in the middle water that flows, and the corrosion rate＞0.15mm/a of gray cast iron.
The beneficial effects of the utility model are, stainless steel inner lining coating circulating water pump is keeping cheaply effectively reducing the rate of corrosion of the pump housing, the working life of having improved circulating water pump under the prerequisite as far as possible.
Description of drawings
Fig. 1 is a structural scheme of mechanism of the present utility model.
Wherein, 1. pump case, 2. abrasionproof anti-corrosion layer.
Embodiment
Provide specific embodiment of the utility model below.
Among Fig. 1, the abrasionproof anti-corrosion layer is arranged at the pump case 1 and/or the pump cover inner-wall spraying of the pump housing.。Wear-resistance and anti-corrosion layer 2 is Stainless Steel Wire sprayfused coating or Stainless Steel Powder sprayfused coating.
Embodiment 1
A kind of inner liner stainless steel coating circulating water pump that adopts arc spray process to obtain.
Present embodiment is that to adopt arc spray process spraying one deck abrasionproof anti-corrosion layer 2 at gray cast iron pump case 1 inwall be stainless steel coating.Concrete technology is: at first the gray cast iron circulating water pump pump housing and pump cover are carried out sandblasting pretreatment, be mainly used to cleaning and coarse surface, then Stainless Steel Wire is adopted electric arc spraying equipment, the pump housing and pump cover are sprayed, Stainless Steel Wire is as the two poles of the earth of electric arc, evenly send to through wire feeder, after the striking, electric arc is with the fusing of silk material, and pressurized air atomizes molten metal after Laval nozzle quickens, and the molten drop of atomizing accelerated to supersonic speed, spray to workpiece and form coating.Spray voltage is 30～40V, and electric current is 80～200A.
Stainless steel inner lining coating circulating water pump and common grey iron circulating water pump are used for the thermoelectric Co., Ltd of Shandong Zhanhua carry out the corrosion resistance effect relatively: the result is presented at the corrosion resistance of flowing seawater medium stainless steel inner lining coating significantly better than common grey iron.
A kind of inner liner stainless steel coating circulating water pump that adopts flame powder spray fusing and remelting method to obtain.
Present embodiment is that to adopt flame powder spray fusing and remelting method to spray a kind of abrasionproof anti-corrosion layer 2 at gray cast iron pump case 1 inwall be the Stainless Steel Powder coating.Concrete technology is: at first gray cast iron circulating water pump housing being carried out surface preparation is sand blast, then powder of stainless steel is adopted dual-purpose flame spray remolten rifle, and the pump housing and pump cover are carried out spray fusing, and the spray fusing temperature is 1000～1250 ℃.
Stainless steel inner lining coating circulating water pump and common grey iron circulating water pump are applied to the Holy City, Qufu thermoelectricity plant, carry out anti-corrosion effect contrast: the result is presented at the corrosion resistance of stainless steel inner lining coating in the middle water that flows significantly better than common grey iron.
Claims (2)
1. corrosion-resistant circulating water pump, it comprises the pump housing, it is characterized in that, at the pump case and/or the pump cover inner-wall spraying of the pump housing abrasionproof anti-corrosion layer is arranged.
2. corrosion-resistant circulating water pump as claimed in claim 1 is characterized in that, described wear-resistance and anti-corrosion layer is Stainless Steel Wire sprayfused coating or Stainless Steel Powder sprayfused coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200267178U CN201425026Y (en) | 2009-06-02 | 2009-06-02 | Corrosion-resistant circulating water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200267178U CN201425026Y (en) | 2009-06-02 | 2009-06-02 | Corrosion-resistant circulating water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425026Y true CN201425026Y (en) | 2010-03-17 |
Family
ID=42024472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200267178U Expired - Lifetime CN201425026Y (en) | 2009-06-02 | 2009-06-02 | Corrosion-resistant circulating water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201425026Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075614A (en) * | 2013-01-18 | 2013-05-01 | 苏州博明威尔机械制造有限公司 | Composite shock-absorbing support bracket |
| CN107237780A (en) * | 2017-05-25 | 2017-10-10 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump shell |
| CN116292287A (en) * | 2023-03-21 | 2023-06-23 | 淄博干式真空泵有限公司 | Corrosion-resistant pump body of screw vacuum pump and corrosion-resistant method |
-
2009
- 2009-06-02 CN CN2009200267178U patent/CN201425026Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075614A (en) * | 2013-01-18 | 2013-05-01 | 苏州博明威尔机械制造有限公司 | Composite shock-absorbing support bracket |
| CN107237780A (en) * | 2017-05-25 | 2017-10-10 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump shell |
| CN116292287A (en) * | 2023-03-21 | 2023-06-23 | 淄博干式真空泵有限公司 | Corrosion-resistant pump body of screw vacuum pump and corrosion-resistant method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101338427B (en) | Laser fusing and coating process for wear resistant and etch-resistant coating of hydraulic support column cylinder and piston rod | |
| CN103374693B (en) | Nano thermal barrier coating on surface of high-temperature furnace roller and preparation method thereof | |
| CN103805934B (en) | A kind of electric spark deposition strengthens the method on metal roller surface in conjunction with plasma cladding | |
| CN102278568B (en) | Ductile cast iron pipe with waterproof protective layer and production process thereof | |
| CN103090118A (en) | Wear-resisting and corrosion-resisting alloy coating long and thin composite tube and production method thereof | |
| CN201425026Y (en) | Corrosion-resistant circulating water pump | |
| CN103276282B (en) | Fabrication method of anti-corrosive and wear-resistant pipeline for delivering minerals | |
| CN110607527A (en) | Anti-corrosion boiler pipe and preparation method thereof | |
| CN103062574B (en) | Cermet lining line pipe and preparation method | |
| CN103374694A (en) | Preparation method of corrosion-resistant composite coating for oil pipe | |
| CN106893961A (en) | A kind of supersonic flame spraying method for strengthening turbine blade surface | |
| CN104107767A (en) | Spiral nozzle used in controlled rolling and controlled cooling technology and spiral type water feeding method | |
| CN102079021B (en) | Tubular welding wire for anti-cavitation overlaying of rotating wheel of hydraulic turbine | |
| CN104711506A (en) | Spraying method of high-thickness high-performance coating | |
| CN102912277A (en) | Cored wire for electric arc spraying | |
| CN102021587A (en) | AL2O3 plus TiB2 plus Al composite coating formed by reaction spray coating on surface of aluminum alloy and stirring friction welding and preparation method thereof | |
| CN101492799B (en) | Wear-resistant cast iron coating and production method | |
| CN204358275U (en) | A kind of refractory metal pipeline | |
| CN104862640B (en) | A kind of preparation method of Wet Parts of slurry pump Anti-erosion wear-resistant coating | |
| CN106077618A (en) | The nichrome dusty material containing rare earth and application thereof for abrasive wear resistance | |
| CN105525251A (en) | Supersonic spraying process for sintering main shaft fan blade | |
| CN202176878U (en) | Ductile cast iron pipe with waterproof protective layer | |
| CN105568206A (en) | Super-hydrophobic anti-fouling coating formula based on copper-nickel alloy, coating and preparation method for coating | |
| CN103276283B (en) | A kind of anticorrosion antiwear pipeline of conveying mineral | |
| CN109321860A (en) | A kind of workpiece wear-resistant coating and its spraying method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG HUADIAN ENERGY SAVING TECHNOLOGY CO., LTD Free format text: FORMER NAME: SHANDONG LUNENG ENERGY SAVING EQUIPMENT DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 250101 Shandong city of Ji'nan province high tech Industrial Development Zone, the new Lok Road Qilu Software Park Patentee after: SHANDONG HUADIAN ENERGY SAVING TECHNOLOGY CO., LTD. Address before: High tech Zone Xinluo road Ji'nan City, Shandong province 250101 Qilu Software Park Patentee before: Shandong Luneng Energy Saving Equipment Development Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100317 |