CN201561440U - Oxygen coal spray gun - Google Patents
Oxygen coal spray gun Download PDFInfo
- Publication number
- CN201561440U CN201561440U CN2009202774162U CN200920277416U CN201561440U CN 201561440 U CN201561440 U CN 201561440U CN 2009202774162 U CN2009202774162 U CN 2009202774162U CN 200920277416 U CN200920277416 U CN 200920277416U CN 201561440 U CN201561440 U CN 201561440U
- Authority
- CN
- China
- Prior art keywords
- spray gun
- oxygen
- coal
- pipe
- rifle
- 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
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- 239000007921 spray Substances 0.000 title claims abstract description 78
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000001301 oxygen Substances 0.000 title claims abstract description 54
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 54
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 10
- 239000007924 injection Substances 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- Nozzles (AREA)
Abstract
An oxygen coal spray gun belongs to the technical field of blast furnace coal injection system equipment, and is a sleeve type spray gun for directly feeding coal powder and oxygen into a blast furnace for combustion. The spray gun has inner pipe for conveying coal powder and outer pipe for conveying oxygen and inner and outer partsThe tube is made of heat-resistant stainless steel. The rear part of the spray gun is of a flange assembly type structure and is provided with a pulverized coal valve group, an oxygen valve group and an armored thermocouple. The front part of the spray gun is welded with a ceramic lining elbow, the outlet end of the thermocouple is sealed by a flange, and the spray gun is provided with an axial adjusting and positioning device. The oxygen coal spray gun has firm structure, good sealing effect and complete safety measures, can effectively inhibit the abrasion of the tuyere, and is suitable for 4000m3Above the oxygen coal lance used in the blast furnace.
Description
Technical field
The utility model belongs to the equipment technical field of bf coal injection system, and a kind of oxygen coal spray gun particularly is provided, and is used for coal dust and oxygen are directly sent in the State of Blast Furnace.
Background technology
Pulverized coal injection has become ironmaking system the most direct, the effective technical means that reduces production costs.
Coal powder injection is two kinds of different pulverized coal injection modes to the hot blast oxygen-enriched coal spray with oxygen coal spray gun.The former is blended into the cold air duct of hot-blast stove with oxygen, increases combustion rate and the coal-to-coke replacement of coal dust in blast furnace in the mode that improves the hot blast oxygen content.The hot blast oxygen-enriched coal spray is comparatively popular a kind of blast-furnace coal powder injection method.The latter is a kind of burner of directly coal dust and oxygen being sent into blast-furnace tuyere, and its comburant oxygen efficient height can significantly increase the combustion rate of coal dust in the zone, air port, is a kind of effective ways that improve the pulverized coal injection ratio.The coal powder injection of oxygen coal spray gun is a kind of advanced person's a blast-furnace coal powder injection method, and it is particularly suitable at 4000m
3More than big blast furnace use.
The spray gun that the hot blast oxygen-enriched coal spray adopts is fairly simple, the monomer spray gun that normally adopts heat-resistance stainless steel tubing to make.Have only the minority blast furnace to use with air-cooled sleeve spray gun.
The structure more complicated of oxygen coal spray gun except that need adopt heat-resistance stainless steel and telescoping structure, also will have the safeguard measure of spray gun, as advance oxygen channel and want the handicapping firearm, will establish armoured thermocouple in the spray gun, will establish the connection lead that can get rid of static between flange.Owing to complex structure, single rifle cost height of oxygen coal spray gun, the risk of oxygen leakage and detonation is arranged, does not obtain mass production applications so far in China.
Summary of the invention
The purpose of this utility model is to provide a kind of oxygen coal spray gun, is applicable to the telescopic oxygen coal spray gun that big blast furnace is used.Its compact conformation, good airproof performance, do not grind air port, easy to adjust, operating mode long service life.
The utility model comprise pipe in the curved rifle of lining pottery, overcoat elbow, the spray gun, spray gun outer tube, spray gun clamp, hand-tight bolt, thermocouple leading-out terminal sealing device, ceramic hyperbola endosiphuncular tube, manually Coad dust ball valve, manually the emptying ball valve, to silk, tapered slip-knot, D type cutting ferrule, oxygen spark arrester, manual oxygen ball valve, electrostatic conductor, bolt, protective cover, sealing flange, O shape cushion rubber, oblique cutting pipe, armoured thermocouple leading-out terminal.Sealing flange and oblique cutting pipe are welded as a whole, and its surface of flange is established four bolts hole and placed the groove of O type circle.After in groove, embedding O type circle, flanged (FLGD) armoured thermocouple leading-out terminal is inserted in the oblique cutting pipe, and the lid protective cover, inserting bolt is also tightened.The wire casing mouth that the external connection of armoured thermocouple is reserved from the part protective cover stretches out, and is connected with external signal line by socket.
Pipe is welded with the curved rifle of lining pottery in the spray gun of spray gun front end, and the spray gun outer tube also is welded with the curved rifle of lining pottery, and the camber of the curved rifle of lining pottery is 5-10 °.
Oxygen coal spray gun afterbody has installed tapered movable joint additional, and the rifle cassette tape has bolt, has formed the axial adjustment and the positioner of oxygen coal spray gun thus.
The curved rifle head of lining pottery of pipe is used from climing combustion technology and is produced in the curved rifle spray gun of lining pottery, ceramic layer thickness 1-1.5mm, and length 100mm, adopts the argon arc welding by camber 5-10 °; After the welding of pipe rifle head, the overcoat bend pipe of 5-10 ° of camber is welded in dislocation in treating.
The utility model also is provided with spray gun protective devices such as oxygen resistance oxygen firearm, armoured thermocouple, electrostatic conductor except that adopting heat-resistance stainless steel material and socket type flange fabricated construction.The oxygen spark arrester is located on the oxygen hose of spray gun afterbody, is used to prevent the spray gun tempering oxygen pipeline that ignites.Armoured thermocouple is placed in the interlayer of spray gun inner and outer pipes, and its front end is used to monitor the temperature of gun body apart from the about 200mm of lance head.Electrostatic conductor is connected on the flange of spray gun sleeve pipe, is used to get rid of the static that the rifle body produces because of friction.
1 for suppressing coal powder injection wearing and tearing air port, for telescopic oxygen coal spray gun has installed the ceramic spray gun elbow of lining additional.Angle of bend is 5-10 °.
2 for protecting thermocouple, preventing oxygen leakage; leading-out terminal at armoured thermocouple adopts pressing from both sides the sealing means of flange-O type cushion rubber; flexible normal screwing type is sealed into the sealing of flange screw formula, has not only improved sealing, also makes the overall structure of spray gun compact more and firm.
3 for making things convenient for the use of elbow spray gun, installed axial adjustment and the positioner be made up of tapered movable joint, rifle fastening position bolt etc. on oxygen coal spray gun additional.Tapered movable joint is installed in the spray gun afterbody, and the rifle card then is enclosed within on the gun shot.When adjusting spray gun spout angle, can carry out the axial adjustment of gun body by tapered movable joint, and by rifle fastening position.
The utility model is a kind of shrouded lance that is used for coal dust and oxygen are directly sent into the State of Blast Furnace internal combustion.Pipe pulverized coal conveying in this spray gun, the outer tube delivering oxygen, the inner and outer pipes material is heat-resistance stainless steel.The spray gun rear portion is the flange fabricated construction, is provided with coal dust valve group, oxygen valve group and armoured thermocouple.The spray gun front portion is welded with the ceramic elbow of lining, and the thermocouple leading-out terminal adopts flange seal, is provided with spray gun axial adjustment and positioner.This kind oxygen coal spray gun structure firmly, good sealing effect, safety measure be complete, can effectively suppress the air port abrasion, is a kind of 4000m of being suitable for
3The oxygen coal spray gun that above blast furnace uses.At the Shoudu Iron and Steel Co Jing Tang 5500m of company
3Drop into production application on the blast furnace, respond well.
Description of drawings
Fig. 1 is the structure chart of oxygen coal spray gun.Spray gun elbow, thermocouple hermetically-sealed construction all have partial enlarged drawing in the figure.Wherein, pipe 3 in the curved rifle 1 of lining pottery, overcoat elbow 2, the spray gun, spray gun outer tube 4, spray gun clamp 5, hand-tight bolt 6, thermocouple leading-out terminal sealing device 7, ceramic hyperbola endosiphuncular tube 8, manually Coad dust ball valve 9, manually emptying ball valve 10, to silk 11, tapered slip-knot 12, D type cutting ferrule 13,14, oxygen spark arrester 15, manually oxygen ball valve 16, electrostatic conductor 17.
Fig. 2 is an A portion partial enlarged drawing.Wherein, bolt 18, protective cover 19, sealing flange 20, O shape cushion rubber 21, oblique cutting pipe 22, armoured thermocouple 23.
Fig. 3 is a B portion partial enlarged drawing.
The specific embodiment
Each parts of spray gun are processed or are purchased by part drawing separately, and accompanying drawing carries out welding assembly to specifications.
Special point is:
The curved rifle head of 1 lining pottery: the curved rifle head of the lining of pipe pottery is used from climing combustion technology and is produced in the spray gun, ceramic layer thickness 1-1.5mm, and length 100mm, adopts the argon arc welding by camber 5-10 °.After the welding of pipe rifle head, the overcoat bend pipe of 5-10 ° of camber is welded in dislocation in treating.
2 thermocouple leading-out terminal hermetically-sealed constructions: as shown in the figure: sealing flange 20 and oblique cutting pipe are welded as a whole, and its surface is established four bolts hole and placed the groove of O type circle.After in groove, embedding O type circle 21, flanged (FLGD) armoured thermocouple 23 is inserted in the oblique cutting pipe 22, and lid protective cover 19, inserting bolt 18 is also tightened.The wire casing mouth that the external connection of armoured thermocouple is reserved from part protective cover 19 stretches out, and is connected with external signal line by socket.
3 spray gun axial adjustment and location: owing to adopt the elbow spray gun, avoid tuyere small sleeve fully for the pulverized coal flow thigh that makes ejection, spray gun must have axial adjustment and positioning function.The utility model carries out the axial adjustment of spray gun by tapered slip-knot 12, and carries out axial location with the spray gun after 6 pairs of adjustings of hand-tight bolt.Because hand-tight bolt 6 is located at the outside of rifle chuck root seal section, there is not the danger of leaking out.
Claims (5)
1. an oxygen coal spray gun comprises the curved rifle (1) of lining pottery, overcoat elbow (2), pipe (3) in the spray gun, spray gun outer tube (4), spray gun clamp (5), hand-tight bolt (6), thermocouple leading-out terminal sealing device (7), pottery hyperbola endosiphuncular tube (8), manual Coad dust ball valve (9), manual emptying ball valve (10), to silk (11), tapered slip-knot (12), D type cutting ferrule (13,14), oxygen spark arrester (15), manual oxygen ball valve (16), electrostatic conductor (17), bolt (18), protective cover (19), sealing flange (20), O shape cushion rubber (21), oblique cutting pipe (22), armoured thermocouple leading-out terminal (23); It is characterized in that sealing flange (20) and oblique cutting pipe are welded as a whole, its surface is established four bolts hole and is placed the groove of O type circle; After in groove, embedding O type circle, flanged (FLGD) armoured thermocouple leading-out terminal (23) is inserted in the oblique cutting pipe (22), and lid protective cover (19), inserting bolt (18) is also tightened; The wire casing mouth that the external connection of armoured thermocouple is reserved from part protective cover (19) stretches out, and is connected with external signal line by socket; Pipe (3) is welded with the curved rifle (1) of lining pottery in the spray gun of spray gun front end, and spray gun outer tube (4) is welded with the curved rifle of lining pottery.
2. oxygen coal spray gun according to claim 1 is characterized in that, the leading-out terminal of the built-in armoured thermocouple of spray gun is adopted O shape circle mode and sealed.
3. oxygen coal spray gun according to claim 1 is characterized in that, the camber of the curved rifle (1) of lining pottery is 5-10 °.
4. oxygen coal spray gun according to claim 1 is characterized in that, oxygen coal spray gun afterbody has installed tapered movable joint additional, and the rifle cassette tape has bolt, has formed the axial adjustment and the positioner of oxygen coal spray gun thus.
5. oxygen coal spray gun according to claim 1 is characterized in that, the curved rifle head of lining pottery of pipe is used from climing combustion technology and produced in curved rifle (1) spray gun of lining pottery, ceramic layer thickness 1-1.5mm, and length 100mm, adopts the argon arc welding by camber 5-10 °; After the welding of pipe rifle head, the overcoat bend pipe of 5-10 ° of camber is welded in dislocation in treating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774162U CN201561440U (en) | 2009-11-25 | 2009-11-25 | Oxygen coal spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774162U CN201561440U (en) | 2009-11-25 | 2009-11-25 | Oxygen coal spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561440U true CN201561440U (en) | 2010-08-25 |
Family
ID=42626586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202774162U Expired - Lifetime CN201561440U (en) | 2009-11-25 | 2009-11-25 | Oxygen coal spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561440U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486085A (en) * | 2010-12-01 | 2012-06-06 | 新奥气化采煤有限公司 | Gasifying agent transmission and distribution system and technology for underground gasification of carbon-containing organic matters |
| CN104024440A (en) * | 2011-12-21 | 2014-09-03 | 杰富意钢铁株式会社 | Blast furnace operation method |
| CN117626163A (en) * | 2024-01-25 | 2024-03-01 | 成都飞机工业（集团）有限责任公司 | Safety spraying control system and control method for conductive aluminum layer on surface of composite part |
-
2009
- 2009-11-25 CN CN2009202774162U patent/CN201561440U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486085A (en) * | 2010-12-01 | 2012-06-06 | 新奥气化采煤有限公司 | Gasifying agent transmission and distribution system and technology for underground gasification of carbon-containing organic matters |
| CN104024440A (en) * | 2011-12-21 | 2014-09-03 | 杰富意钢铁株式会社 | Blast furnace operation method |
| CN104024440B (en) * | 2011-12-21 | 2016-01-20 | 杰富意钢铁株式会社 | Method for operating blast furnace |
| CN117626163A (en) * | 2024-01-25 | 2024-03-01 | 成都飞机工业（集团）有限责任公司 | Safety spraying control system and control method for conductive aluminum layer on surface of composite part |
| CN117626163B (en) * | 2024-01-25 | 2024-06-07 | 成都飞机工业（集团）有限责任公司 | Safety spraying control system and control method for conductive aluminum layer on surface of composite part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |