CN204267951U - A kind of wear-resisting pipe nipple - Google Patents
A kind of wear-resisting pipe nipple Download PDFInfo
- Publication number
- CN204267951U CN204267951U CN201420667865.9U CN201420667865U CN204267951U CN 204267951 U CN204267951 U CN 204267951U CN 201420667865 U CN201420667865 U CN 201420667865U CN 204267951 U CN204267951 U CN 204267951U
- Authority
- CN
- China
- Prior art keywords
- wear
- resisting
- mother metal
- weldless tube
- pipe nipple
- 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 - Fee Related
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Abstract
The utility model relates to a kind of wear-resisting pipe nipple, and for connecting the identical wear-resisting straight tube (4) of two external diameters, it is characterized in that, described pipe nipple comprises weldless tube mother metal (1) and wearing layer (2); The weldless tube that described weldless tube mother metal (1) is hollow circular; The outer side wall crossing central cross-section of described weldless tube mother metal (1) offers two circular pipe joints (3), and the diameter d of described two circular pipe joints (3) equals the external diameter of described wear-resisting straight tube (4); For two described wear-resisting straight tubes (4) are inserted in described weldless tube mother metal (1); Described wearing layer (2) is the high-abrasive material that hardness is high, wear resistance is excellent be compound to by overlaying method on described weldless tube mother metal (1) internal surface.Wear-resisting pipe nipple of the present utility model has that structure is simple, wear resistance is strong, the feature of long service life, can substitute the elbow of convey coal pipe.
Description
Technical field
The utility model belongs to blast furnace process coal powder injection field, particularly the wear-resisting pipe nipple of one.
Background technique
Blast furnace process coal powder injection convey coal pipe is made up of, for pulverized coal conveying wear-resisting straight tube and wear-resistant bend.Although have wearing layer in wear-resistant bend, because blast furnace process injecting coal quantity is large, pressure is high, can wash away energetically and the elbow that weares and teares causes elbow all to grind, therefore need the elbow wearing plate at coal gas region bag weldering convey coal pipe, this working amount is large, task difficulty is high, and labor intensity is large; And general steel plate is not wear-resisting, working life is short, therefore within every 20 days, just needs large size operation once, have impact on the stability of coal spraying pipeline overall operation, have impact on the accuracy that injecting coal quantity is quantitative, add the cost of blast furnace process.
Model utility content
The purpose of this utility model is to solve the problem that in blast furnace process coal powder injection process, convey coal pipe elbow is easy to wear, provides that a kind of structure is simple, wear resistance strong, the wear-resisting pipe nipple of long service life, can substitute the elbow of convey coal pipe.
For realizing above object, the utility model adopts following technological scheme:
A kind of wear-resisting pipe nipple, for connecting the identical wear-resisting straight tube 4 of two external diameters, described pipe nipple comprises weldless tube mother metal 1 and wearing layer 2; Described weldless tube mother metal 1 is the weldless tube of hollow circular; The outer side wall crossing central cross-section of described weldless tube mother metal 1 offers two circular pipe joints 3, and the diameter d of described two circular pipe joints 3 equals the external diameter of described wear-resisting straight tube 4; For two described wear-resisting straight tubes 4 are inserted in described weldless tube mother metal 1; Described wearing layer 2 is the high-abrasive materials that hardness is high, wear resistance is excellent be compound to by overlaying method on described weldless tube mother metal 1 internal surface.
In technique scheme, the span of the outer diameter D 2 of described weldless tube mother metal 1 is 57mm-2000mm.
In technique scheme, the material of described weldless tube mother metal 1 is low carbon steel plate.
In technique scheme, the span of the length L that two described wear-resisting straight tubes 4 insert in described weldless tube mother metal 1 is 10mm-50mm.
In technique scheme, the span of the angle α after described two wear-resisting straight tubes 4 insert described weldless tube mother metal 1 is 30 °-150 °.
In technique scheme, the thickness range of described wearing layer 2 is 10mm-20mm.
In technique scheme, preferably, described high-abrasive material is high chrome molybdenum alloy.
The utility model has the advantage of:
1, wear-resisting pipe nipple wear resistance of the present utility model is strong, meets blast furnace process coal powder injection convey coal pipe production environment needs;
2,24 months are reached the working life of wear-resisting pipe nipple of the present utility model;
3, the structure of wear-resisting pipe nipple of the present utility model and preparation process simple, convenience quick for installation, labor intensity is low.
Accompanying drawing explanation
Fig. 1 is the plan view of wear-resisting pipe nipple of the present utility model;
Fig. 2 is the left sectional view of wear-resisting pipe nipple of the present utility model.
Accompanying drawing identifies:
1, weldless tube mother metal 2, wearing layer 3, pipe joint 4, wear-resisting straight tube
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As depicted in figs. 1 and 2, a kind of wear-resisting pipe nipple, for connecting the identical wear-resisting straight tube 4 of two external diameters, described pipe nipple comprises weldless tube mother metal 1 and wearing layer 2; Described weldless tube mother metal 1 is the weldless tube of hollow circular, and the outside dimension of described weldless tube is the span of D2, D2 is 57mm-2000mm; Internal diameter size is D1; The material of described weldless tube mother metal 1 is tough, that plasticity is good low carbon steel plate.
The outer side wall crossing central cross-section of described weldless tube mother metal 1 offers two circular pipe joints 3, for inserting in described weldless tube mother metal 1 by two described wear-resisting straight tubes 4; The diameter d of described two circular pipe joints 3 equals the external diameter of described wear-resisting straight tube 4; The span of the length L that two described wear-resisting straight tubes 4 insert in described weldless tube mother metal 1 is 10mm-50mm; The span of the angle α after described two wear-resisting straight tubes 4 insert described weldless tube mother metal 1 is 30 °-150 °.
Described wearing layer 2 is the high-abrasive materials that hardness is high, wear resistance is excellent be compound to by overlaying method on described weldless tube mother metal 1 internal surface, and the thickness range of described wearing layer 2 is 10mm-20mm; As one preferred embodiment, described high-abrasive material is high chrome molybdenum alloy.
The working process of described wear-resisting pipe nipple is:
Step 1) adopt material to be that described weldless tube mother metal 1 made by the weldless tube of tough, that plasticity is good low carbon steel plate;
Step 2) in order to reduce, described weldless tube mother metal 1 is in use cut to be damaged, the outer side wall crossing central cross-section of described weldless tube mother metal 1 offers two circular pipe joints 3, its diameter d all equals the external diameter of 4 of described wear-resisting straight tube, therefore directly can block two described wear-resisting straight tubes 4; The cambered surface distance at the center of described two pipe joints 3 is: D2 α π/180;
Step 3) according to predetermined L value, two wear-resisting straight tubes 4 are inserted two pipe joints 3 respectively, be then welded and fixed at jointing;
Step 4) by after the rust cleaning of described weldless tube mother metal 1 internal surface process, process of scraping, by overlaying method, high for the hardness meeting thickness requirement, that wear resistance is excellent high-abrasive material is compound on described weldless tube mother metal 1 internal surface, form described wearing layer 2, namely complete the making of described wear-resisting pipe nipple finished parts.
Claims (7)
1. a wear-resisting pipe nipple, for connecting the identical wear-resisting straight tube (4) of two external diameters, it is characterized in that, described pipe nipple comprises weldless tube mother metal (1) and wearing layer (2); The weldless tube that described weldless tube mother metal (1) is hollow circular; The outer side wall crossing central cross-section of described weldless tube mother metal (1) offers two circular pipe joints (3), and the diameter d of described two circular pipe joints (3) equals the external diameter of described wear-resisting straight tube (4); For two described wear-resisting straight tubes (4) are inserted in described weldless tube mother metal (1); Described wearing layer (2) is the high-abrasive material that hardness is high, wear resistance is excellent be compound to by overlaying method on described weldless tube mother metal (1) internal surface.
2. wear-resisting pipe nipple according to claim 1, is characterized in that, the span of the outer diameter D 2 of described weldless tube mother metal (1) is 57mm-2000mm.
3. wear-resisting pipe nipple according to claim 1, is characterized in that, the material of described weldless tube mother metal (1) is low carbon steel plate.
4. wear-resisting pipe nipple according to claim 1, is characterized in that, the span of the length L that two described wear-resisting straight tubes (4) are inserted in described weldless tube mother metal (1) is 10mm-50mm.
5. wear-resisting pipe nipple according to claim 1, is characterized in that, the span of the angle α that two described wear-resisting straight tubes (4) are inserted after described weldless tube mother metal (1) is 30 °-150 °.
6. wear-resisting pipe nipple according to claim 1, is characterized in that, in technique scheme, the thickness range of described wearing layer (2) is 10mm-20mm.
7. wear-resisting pipe nipple according to claim 1, is characterized in that, described high-abrasive material is high chrome molybdenum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667865.9U CN204267951U (en) | 2014-11-10 | 2014-11-10 | A kind of wear-resisting pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667865.9U CN204267951U (en) | 2014-11-10 | 2014-11-10 | A kind of wear-resisting pipe nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267951U true CN204267951U (en) | 2015-04-15 |
Family
ID=52802818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420667865.9U Expired - Fee Related CN204267951U (en) | 2014-11-10 | 2014-11-10 | A kind of wear-resisting pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267951U (en) |
-
2014
- 2014-11-10 CN CN201420667865.9U patent/CN204267951U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20171110 |