CN207659473U - A kind of blast furnace reinforcement coal powder lance - Google Patents
A kind of blast furnace reinforcement coal powder lance Download PDFInfo
- Publication number
- CN207659473U CN207659473U CN201721871584.5U CN201721871584U CN207659473U CN 207659473 U CN207659473 U CN 207659473U CN 201721871584 U CN201721871584 U CN 201721871584U CN 207659473 U CN207659473 U CN 207659473U
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- CN
- China
- Prior art keywords
- coal powder
- pipette tips
- gun body
- blast furnace
- reinforcing rib
- 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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Abstract
The utility model discloses a kind of blast furnace reinforcement coal powder lances, including gun body (1), pipette tips (2) and reinforcing rib (3)；The pipette tips (2) are fixed on the coal powder injection end of the gun body (1), one or more described reinforcing rib (3) is uniformly fixed in the outside wall surface of gun body (1).The coal powder lance is simple in structure, is applied on steel mill's blast furnace, achieves extraordinary resistance to deformation and collapses waist effect, and service life worked well up to 3-4 months；Pipette tips use the curved pipette tips of lined ceramics, can substantially reduce the abrasion in air port, improve the service life of pipette tips；Reinforcing rib is welded on the outer surface of gun body, serves and reinforces fixed, prevents waist deformation of collapsing because of intensity deficiency during gun body use；Reinforcing rib length is adjustable, is applicable to the coal powder lance of different size.
Description
Technical field
The utility model is related to field of blast furnace coal injection, especially a kind of for coal dust and air to be sent directly into blast furnace internal combustion
The reinforcement coal powder lance of burning.
Background technology
Pulverized coal injection is to have revolutionary vital measure for modern blast furnace ironmaking technology, it has also become blast furnace ironmaking system
System reduces that production cost is most direct, most effective technological means.Important equipment of the coal powder lance as pulverized coal injection, structure and property
All various aspects such as coal combustion rate, coal-to-coke replacement, supply opening model can be directly influenced.
With the raising of blast furnace air temperature and blast furnace enlargement, although the material of coal powder lance is continuously improved, coal powder lance is in air port
Interior deformation waist phenomenon of collapsing is more serious, not only be easy to cause tuyere damage even belly pipe and the major accidents such as burns, spray gun
Frequently adjustment and replacement also substantially increase the labor intensity of field personnel, affect the normal operation of coal injection system.
Utility model content
The purpose of this utility model is to provide a kind of blast furnace reinforcement coal powder lance, solves coal powder lance and collapse in air port waist change
The problem of shape, tuyere damage or even belly pipe are burnt.
To achieve the above object, the utility model discloses a kind of blast furnace reinforcement coal powder lance, including gun body, pipette tips and add
Strengthening tendons；
Pipette tips are fixed on the coal powder injection end of gun body, one or more reinforcing rib is uniformly fixed in the outside wall surface of gun body.
The coal powder lance is simple in structure, is applied on steel mill's blast furnace, achieves extraordinary resistance to deformation and collapses waist effect, uses the longevity
Life worked well up to 3-4 months.
Further, gun body is one section of straight pipe, and straight pipe specification is
The straight pipe of the specification is weldless integral tube, and intensity is high, can there is good high temperature resistance.
The material of gun body is 310S.
310S stainless steels (0Cr25Ni20) are austenitic chromium nickel stainless steels, have good inoxidizability, corrosion resistance,
Because the chromium and nickel of higher percent, 310S possess much better creep strength, at high temperature can continuous operation, have it is good resistance to
It is high temperatures.
Further, pipette tips include internal corundum ceramic layer and external steel, and steel layer material is 310S.
Ceramic layer is to form dense alumina porcelain in 2200 DEG C or more high temperature, and firm knot is formed with steel pipe by transition zone
It closes.Multiple tube is because having given full play to steel strength height, good toughness, impact resistance, good welding performance and Corundum Ceramics high rigidity, high resistance to
It is mill, anti-corrosion, heat-resist, overcome that steel pipe hardness is low, wears no resistance and the feature of ceramics toughness difference.Therefore, ceramic-lined
Elbow has the comprehensive performances such as good wear-resisting, heat-resisting, anti-corrosion and resistance to mechanical impact and thermal shock, solderability be good.
Further, there are certain bending angle, the crooked end center line of pipette tips and the center of gun body in the end of pipette tips
Angle between line is 5 °.
Angle is 5 ° so that coal dust running resistance is small during coal powder injection, and reduction coal dust washes away pipette tips, extends pipette tips
Service life.
Further, the ceramic layer thickness inside pipette tips is 2.5mm, length 150mm.
The ceramic layer can not only meet heat-resisting, anti abrasive requirement during coal powder injection, but also can reduce cost, convenient for promoting
Using.
Further, reinforcing rib material is high Ni steel plates.
The steel plate have high intensity and corrosion resistance, be welded on the outer surface of gun body, serve reinforcement it is fixed, prevent
It collapses because of intensity deficiency during gun body use waist deformation.
Further, reinforcing rib quantity is three, is uniformly weldingly fixed on the outer surface of gun body.
Three equally distributed reinforcing ribs cooperate, and ensure the entire circumferential intensity of gun body.
Further, the size of reinforcing rib is 500 × 5.5 × 4mm.
Reinforcing rib can either meet the requirement for increasing gun body intensity, while in line with cost-effective principle, reduce as far as possible
Size.
Further, the distance between the top of reinforcing rib and pipette tips top are 300mm.
Reinforcing rib has certain distance between gun body and the solder joint of pipette tips, the distance can guarantee reinforcing rib and the solder joint it
Between welded stress will not influence each other, avoid the increase of coal powder lance internal stress.
The beneficial effects of the utility model are：
(1) coal powder lance is simple in structure, is applied on steel mill's blast furnace, achieves extraordinary resistance to deformation and collapses waist effect, makes
With the service life up to 3-4 months, work well；
(2) pipette tips use the curved pipette tips of lined ceramics, can substantially reduce the abrasion in air port, improve the service life of pipette tips；
(3) reinforcing rib is welded on the outer surface of gun body, serves and reinforces fixed, prevents during gun body use because of intensity
Insufficient and waist deformation of collapsing；
(4) reinforcing rib length is adjustable, is applicable to the coal powder lance of different size.
Other feature and advantage of the utility model will illustrate in the following description, also, partial from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is realized and is obtained in the specification, claims and attached drawing write.
Description of the drawings
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitations of the present invention, entire
In attached drawing, identical reference mark indicates identical component.
Fig. 1 is the blast furnace reinforcement coal powder lance overall structure diagram of the utility model；
Fig. 2 is the blast furnace reinforcement coal powder lance A schematic cross-sections of the utility model.
Figure label：1- gun bodies, 2- pipette tips, 3- reinforcing ribs.
Specific implementation mode
Specifically describe the preferred embodiment of the utility model below in conjunction with the accompanying drawings, wherein attached drawing constitutes the application one
Point, and for illustrating the principles of the present invention together with the embodiments of the present invention.
The utility model discloses a kind of blast furnace reinforcement coal powder lances, as shown in Figure 1, including gun body 1, pipette tips 2 and reinforcing
Muscle 3.
Pipette tips 2 are welded and fixed after being docked with gun body 1, one or more 3 uniform welding of reinforcing rib is fixed on the outer of gun body 1
On wall surface.
Gun body 1 is coal powder lance steel pipe, is one section of straight pipe, more preferably, the specification of the straight pipe isMore
To be preferred, the material of gun body 1 is 310S, which has good inoxidizability, corrosion resistance and heat-resisting quantity, select this
Kind material can increase the service life of gun body 1.
Pipette tips 2 are the curved pipette tips of lined ceramics, which uses manufactures from climing combustion technology, and pipette tips 2 include inside
Corundum ceramic layer and external steel, steel layer material be 310S.Why it is bend pipe, is because the end of the pipette tips 2 has centainly
Bending angle, the bending angle can according to actual production require make, more preferably, the crooked end center line of pipette tips 2
Angle between the center line of gun body 1 is 5 °, i.e., the bending angle of pipette tips 2 is 5 °, why selects the angle, is because of rifle
First 2 in coal powder injection air port serious wear, and the abrasion in air port can be substantially reduced using the bending angle, improve the use of pipette tips 2
Service life.
In one embodiment of the application, the ceramic layer thickness inside pipette tips 2 is 2.5mm, length 150mm, ceramic layer
With good high temperature resistance, the ceramic layer of the specification can prevent waist deformation of collapsing when coal injection of draught, while pipette tips 2 being avoided to be burnt
It wears, extends the service life of pipette tips 2.
3 material of reinforcing rib is high Ni steel plates, which has high intensity and corrosion resistance, be welded on the appearance of gun body 1
Face serves and reinforces fixed, prevents waist deformation of collapsing because of intensity deficiency during 1 use of gun body.
More preferred, 3 quantity of reinforcing rib is three, is uniformly weldingly fixed on the outer surface of gun body 1, that is to say, that phase
Angle between adjacent reinforcing rib 3 is 120 °, and equally distributed reinforcing rib 3 cooperates, and ensures the entire circumferential intensity of gun body 1.
More preferably, the size of reinforcing rib 3 is 500 × 5.5 × 4mm, and in the alternative embodiment of the application
In, the distance between top and 2 top of pipette tips of reinforcing rib 3 are 300mm, and the reinforcing rib 3 of the specification plays fixed work to gun body 1
With the intensity during guarantee 1 use of gun body avoids gun body 1 from deforming.And solder joint of the reinforcing rib 3 apart from gun body 1 and pipette tips 2 it
Between distance be 150mm, the certifiable welded stress between reinforcing rib 3 and the solder joint of the distance will not influence each other, avoid
The increase of coal powder lance internal stress.
In use, the end of gun body 1 is connected by valve with coal chute line, pipette tips 2 are connected with blast furnace, are mixed with air
Coal dust enters gun body 1 from coal chute line, enters blast furnace by pipette tips 2.
In conclusion the utility model provides a kind of blast furnace reinforcement coal powder lance, the coal powder lance is simple in structure, is applied to
It on steel mill's blast furnace, achieves extraordinary resistance to deformation and collapses waist effect, service life worked well up to 3-4 months；Pipette tips make
With the curved pipette tips of lined ceramics, the abrasion in air port can be substantially reduced, improves the service life of pipette tips；Reinforcing rib is welded on gun body
Outer surface serves and reinforces fixed, prevents waist deformation of collapsing because of intensity deficiency during gun body use；Reinforcing rib length can
It adjusts, is applicable to the coal powder lance of different size.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of blast furnace reinforcement coal powder lance, which is characterized in that including gun body (1), pipette tips (2) and reinforcing rib (3)；
The pipette tips (2) are fixed on the coal powder injection end of the gun body (1), one or more described reinforcing rib (3) is uniformly fixed on
In the outside wall surface of gun body (1).
2. blast furnace according to claim 1 reinforcement coal powder lance, which is characterized in that the gun body (1) is one section of straight pipe,
Directly pipe specification isMaterial is 310S.
3. blast furnace according to claim 1 or 2 reinforcement coal powder lance, which is characterized in that the pipette tips (2) include internal
Corundum ceramic layer and external steel, steel layer material are 310S.
4. blast furnace according to claim 1 or 2 reinforcement coal powder lance, which is characterized in that the end of the pipette tips (2) has one
Fixed bending angle.
5. blast furnace according to claim 4 reinforcement coal powder lance, which is characterized in that in the crooked end of the pipette tips (2)
Angle between heart line and the center line of gun body (1) is 5 °.
6. blast furnace according to claim 5 reinforcement coal powder lance, which is characterized in that the internal ceramic layer of the pipette tips (2)
Thickness is 2.5mm, length 150mm.
7. blast furnace according to claim 5 or 6 reinforcement coal powder lance, which is characterized in that reinforcing rib (3) material is height
Ni steel plates.
8. blast furnace according to claim 7 reinforcement coal powder lance, which is characterized in that reinforcing rib (3) quantity is three,
Uniformly it is weldingly fixed on the outer surface of gun body (1).
9. blast furnace according to claim 8 reinforcement coal powder lance, which is characterized in that the size of the reinforcing rib (3) is 500
×5.5×4mm。
10. the reinforcement coal powder lance of blast furnace according to claim 8 or claim 9, which is characterized in that the top of the reinforcing rib (3)
The distance between pipette tips (2) top is 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871584.5U CN207659473U (en) | 2017-12-27 | 2017-12-27 | A kind of blast furnace reinforcement coal powder lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871584.5U CN207659473U (en) | 2017-12-27 | 2017-12-27 | A kind of blast furnace reinforcement coal powder lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207659473U true CN207659473U (en) | 2018-07-27 |
Family
ID=62943854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721871584.5U Expired - Fee Related CN207659473U (en) | 2017-12-27 | 2017-12-27 | A kind of blast furnace reinforcement coal powder lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207659473U (en) |
-
2017
- 2017-12-27 CN CN201721871584.5U patent/CN207659473U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20180727 Termination date: 20211227 |