CN106595317A - Multifunctional metallurgical spray gun - Google Patents
Multifunctional metallurgical spray gun Download PDFInfo
- Publication number
- CN106595317A CN106595317A CN201611086149.1A CN201611086149A CN106595317A CN 106595317 A CN106595317 A CN 106595317A CN 201611086149 A CN201611086149 A CN 201611086149A CN 106595317 A CN106595317 A CN 106595317A
- Authority
- CN
- China
- Prior art keywords
- spray gun
- pipeline section
- pipe flange
- outer tube
- tail pipe
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/168—Introducing a fluid jet or current into the charge through a lance
- F27D2003/169—Construction of the lance, e.g. lances for injecting particles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a multifunctional metallurgical spray gun which comprises a spray gun tail pipe with a main air blowing inlet, a spray gun inner pipe detachably communicating with the spray gun tail pipe, and a spray gun outer pipe which is detachably connected with the spray gun inner pipe and is provided with a protective gas inlet, wherein the spray gun outer pipe is sleeved at the periphery of the spray gun inner pipe in a spacing manner, so that a ring-columnar protective gas flow through gap communicating with the protective gas inlet is formed between the spray gun outer pipe and the spray gun inner pipe. The metallurgical spray gun adopts a flexible combined type design; all the components are of detachably assembled structures; the structural sizes and the materials of the components in the metallurgical spray gun can be adjusted and optimized according to different requirements in a production process; and the metallurgical spray gun is applicable to various technological operations of blowing argon and oxygen to steel liquid, spraying powder to the steel liquid and the like.
Description
Technical field
The present invention relates to metallurgical technology field, and in particular to a kind of multi-functional metallurgical lance.
Background technology
In Ferrous Metallurgy technical process, can be using to spray in Argon, oxygen blast in molten steel, the technological operation such as dust
Rifle.And traditional metallurgical lance is monolithic construction, if technique purpose, working condition or operation requirement are changed, need
When changing spray gun structure design, adjusting and optimizing size or material, spray gun needs all to remanufacture, it is impossible to flexibly changes and adjusts
It is whole.And as spray gun is used in the environment of being contacted with high-temperature molten steel, pipette tips portion is easily damaged, it is therefore desirable to regularly replace,
And conventional lance be integral design, integral demounting change there is also relatively costly problem.
The content of the invention
The present invention seeks to：For above-mentioned technical problem, a kind of multi-functional metallurgical lance is proposed, this metallurgical lance is adopted
Flexible modular design, its each ingredient adopt Demountable assemble type structure, can be according to difference in production process
Need to carry out physical dimension, material to ingredient therein to be adjusted, optimize.It is applicable to molten steel Argon, oxygen blast, spray
The various technological operations such as powder.
The technical scheme is that：A kind of multi-functional metallurgical lance, including：
Spray gun tail pipe with main air blowing entrance；
The spray gun inner tube detachably connected with the spray gun tail pipe；And
Be detachably connected with the spray gun inner tube and spray gun outer tube with shielding gas entrance；
The spray gun outer tube interval is set in the spray gun inner tube periphery so as to be formed between and the shielding gas
The protection air-flow straight joint of the central column that entrance is connected.
The present invention on the basis of above-mentioned technical proposal, also including following preferred version：
One end of the spray gun tail pipe is welded with tail pipe flange, and one end of the spray gun inner tube is welded with interior pipe flange, institute
The one end for stating spray gun outer tube is welded with outer pipe flange, and the spray gun tail pipe, spray gun inner tube and spray gun outer tube are by the tail pipe method
Blue, interior pipe flange and outer pipe flange are detachably connected.
The tail pipe flange, interior pipe flange and outer pipe flange are sequentially coaxially close to arrangement, and are axially located in by screw thread
Being bolted together in the tail pipe flange, interior pipe flange and outer pipe flange.
It is folded between the spray gun inner tube and spray gun outer tube for positioning the protection air-flow straight joint size therebetween
Gap support member.
The spray gun outer tube is made up of the front pipeline section and rear pipeline section that are detachably connected.
The front pipeline section and rear pipeline section are detachably connected by threaded sleeve, the front pipeline section and rear pipeline section
Connection end outer tube wall on be formed with external screw thread, female thread, the threaded sleeve are formed with the inner tubal wall of the threaded sleeve
It is enclosed within outside the front pipeline section and rear pipeline section, and it is outer on the female thread on the threaded sleeve and the front pipeline section and rear pipeline section
Screw-threaded coupling coordinates, so as to realize being detachably connected for the front pipeline section and rear pipeline section.
Seal washer is folded between the front pipeline section and rear pipeline section.
The mounting flange for being fixed on the metallurgical lance on metallurgical tank is connected with the spray gun outer tube.
The spray gun outer tube is coaxially arranged with the spray gun inner tube.
It is an advantage of the invention that：
1st, as the spray gun tail pipe of this spray gun of the invention, spray gun inner tube and spray gun outer tube adopt split type package assembly,
Each several part can individually dismounting and change or adjustment, during practical application, different lance heads can be carried out according to different technique purposes
Portion designs, and changes the sectional dimension and outlet shapes of spray gun inner tube, and such as straight tube, collapsible tube, convergent-divergent channel etc. can be obtained not
Same blowing gas flow and injection jet, realize different metallurgical effects；Change the gap between spray gun outer tube and inner tube or go out
Mouth-shaped, is also capable of achieving the change of blowing gas flow and injection jet flow field, obtains the smeltings such as different injections, cooling, protection
Golden effect.The inside and outside tube material of gun head can be adjusted and be changed according to production needs.Can also side when actually used
Just be individually replaced broken parts, remainder is may continue to using consuming so as to reduce production.
2nd, the spray gun outer tube of this metallurgical lance of the invention also and unconventional monolithic construction, but by being detachably connected
Front pipeline section and rear pipeline section constitute, during use inside the front pipeline section insertion molten steel of spray gun outer tube, then pipeline section outside molten steel, when
When front pipeline section is because of high temperature failure, the front pipeline section for damaging is pulled down, standby front pipeline section is changed, without the need for the whole spray of integral replacing
Rifle, reduces production cost.
Description of the drawings
The invention will be described further with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the axial cross section structure diagram of metallurgical lance in the embodiment of the present invention；
Fig. 2 is the overall structure diagram of metallurgical lance in the embodiment of the present invention；
Fig. 3 is the A-A of Fig. 1 to profile；
Wherein：1- spray gun tail pipes, 2- spray gun inner tubes, 3- spray gun outer tubes, pipeline section before 3a-, pipeline section after 3b-, 4- shielding gas enter
Mouthful, 5- tail pipe flanges, pipe flange in 6-, the outer pipe flanges of 7-, 8- gaps support member, the main air blowing entrances of 9-, 10- seal washers, 11-
Mounting flange, 12- threaded sleeves.
Specific embodiment
Fig. 1 to Fig. 3 shows a specific embodiment of this multi-functional metallurgical lance of the present invention, and which mainly includes：Band
The spray gun tail pipe 1 for having main air blowing entrance 9, the spray gun inner tube 2 being connected with spray gun tail pipe 1 and the spray with shielding gas entrance 4
Rifle outer tube 3, wherein coaxial spaced are set in outside spray gun inner tube, so as to the shielding gas for being formed with central column between circulates
Seam, and the protection air-flow straight joint of the central column is connected with the shielding gas entrance 4.
During practical application, main air blowing (such as Argon, oxygen blast, dust) enters spray gun by main air blowing entrance, by spray gun tail
Pipe 1 and spray gun inner tube 2 are blown into molten steel.Shielding gas enters spray gun by shielding gas entrance, by spray gun outer tube 3 and spray gun inner tube 2 it
Between the protection air-flow straight joint of central column be blown into molten steel.
The key improvements of the present embodiment are：Above-mentioned spray gun tail pipe 1, spray gun inner tube 2 and spray gun outer tube 3 are no longer using tradition
Monolithic construction, but adopt split type package assembly.Wherein：Spray gun inner tube 2 is detachably connected with spray gun tail pipe 1, spray gun
Outer tube 3 is detachably connected with spray gun inner tube 2.
As the spray gun tail pipe 1 of this spray gun of the present embodiment, spray gun inner tube 2 and spray gun outer tube 3 are using split type assembling knot
Structure, each several part can individually dismounting and change or adjustment, during practical application, can be according to different technique purpose (Argon, oxygen blast, spray
Powder etc.), different gun head designs are carried out, changes the sectional dimension and outlet shapes of spray gun inner tube, such as straight tube, contraction
Pipe, convergent-divergent channel etc., it is possible to obtain different blowing gas flows and injection jet, realize different metallurgical effects；Change spray
Gap or outlet shapes between rifle outer tube and inner tube, is also capable of achieving the change of blowing gas flow and injection jet flow field, obtains
The metallurgical effects such as different injection, cooling, protection.The inside and outside tube material of gun head can according to production needs be adjusted and
Change.Broken parts can also be easily individually replaced when actually used, remainder is may continue to using so as to reduce production
Consume.
It is concrete in the present embodiment, side spray rifle of this metallurgical lance for RH lower channel powder injection process, which is that RH dusts and is
One of key equipment of system, it is in RH lower channels, de- for being blown in the molten steel for just being processed in RH vacuum tanks
Sulphur powder agent is reducing the sulfur content in molten steel.In the head of the spray gun, the outlet shapes of spray gun inner tube are straight tube, spray gun outer tube with
Gap or outlet shapes between spray gun inner tube is straight-tube shape, and spray gun outer tube and spray gun inner tube can be used simultaneously or be used respectively heat-resisting
Rustless steel and high temperature resistant nonmetallic materials, Jing tests, the spray gun can be successfully applied to produce reality, and reach expected effect
Really.
The spray gun tail pipe 1, the connection between spray gun inner tube 2 and spray gun outer tube 3 can adopt flange, screw thread, clip, welding
Etc. various connected modes, and the present embodiment employs flange connection, and concrete structure is as follows：
One end of spray gun tail pipe 1 is welded with tail pipe flange 5, and one end of spray gun inner tube 2 is welded with interior pipe flange 6, outside spray gun
One end of pipe 3 is welded with outer pipe flange 7, and spray gun tail pipe 1, spray gun inner tube 2 and spray gun outer tube 3 are by the tail pipe flange 5, inner tube
Flange 6 and outer pipe flange 7 are detachably connected.
More specifically, above-mentioned tail pipe flange 5, interior pipe flange 6 and outer pipe flange 7 are sequentially coaxially close to arrangement, and pass through
Screw thread is axially located in being bolted together in the tail pipe flange 5, interior pipe flange 6 and outer pipe flange 7.
In order to ensure the structural stability of protection air-flow straight joint between the spray gun inner tube 2 and spray gun outer tube 3, the present embodiment
Gap support member 8 is folded between spray gun inner tube 2 and spray gun outer tube 3, it can be appreciated that there is the gap support member 8 positioning to protect
The function of the size of shield air-flow straight joint.During practical application, can be according to needs be used, by changing the spray gun inner tube 2, spray
The structure and/or size of rifle outer tube 3 and gap support member 8 is reconciling the gap size of protection air-flow straight joint.
The main improvement of second of the present embodiment is：The spray gun outer tube 3 by the front pipeline section 3a that is detachably connected and
Pipeline section 3b is constituted afterwards.After wherein, pipeline section 3b is located near the side of the spray gun tail pipe 1, and front pipeline section 3b is located remotely from spray gun tail pipe
1 side.
In the present embodiment, the front pipeline section 3a and rear pipeline section 3b are detachably connected in the way of screw thread coordinates, and are had
Body is linked together by threaded sleeve 12.It is concrete between the threaded sleeve 12 and the front pipeline section 3a and rear pipeline section 3b
Connected mode is as follows：
External screw thread is formed with the outer tube wall of front pipeline section 3a and rear pipeline section 3b connection ends, is made on the inner tubal wall of threaded sleeve 12
There is female thread, threaded sleeve 12 is enclosed within outside front pipeline section 3a and rear pipeline section 3b, and the female thread on threaded sleeve 12 and front pipeline section
External screw thread locking on 3a and rear pipeline section 3b coordinates, so as to realize being detachably connected for front pipeline section 3a and rear pipeline section 3b.
In order to ensure the sealing of front pipeline section 3a and rear pipeline section 3b junctions, during preventing use, gas is from front and back's pipeline section
Junction leaks, and the present embodiment is folded with seal washer 10, and the seal washer 10 between front pipeline section 3a and rear pipeline section 3b
Using the temperature resistant encapsulation packing ring of close property function admirable.
In order to further improve the connection reliability of the front pipeline section 3a and rear pipeline section 3b, in the present embodiment, front pipeline section
The connection end of 3a and rear pipeline section 3b is axially formed the ring-shaped step on the ring-shaped step for cooperating, and front pipeline section 3a
It is set in outside the ring-shaped step on rear pipeline section 3b.
And, above-mentioned seal washer 10 is set in outside the ring-shaped step on rear pipeline section 3b, can so facilitate seal washer
10 assembling.
Can be fixed on metallurgical tank in practical application for the ease of the metallurgical lance, the present embodiment is in spray gun outer tube
The mounting flange 11 for being fixed on the metallurgical lance on metallurgical tank is connected with 3.And the 5 concrete connection of mounting flange
On the rear pipeline section 3b of spray gun outer tube 3.
During use, by mounting flange 11, (in the present embodiment, the metallurgical tank is specially the metallurgical lance with metallurgical tank
RH lower channels) it is fixed, inside the front pipeline section 3a of spray gun outer tube 3 and the insertion molten steel of spray gun inner tube 2.Main air blowing (should in the present embodiment
Main air blowing is specially the air-flow with desulfurization powder) spray gun is entered by main air blowing entrance, blown by spray gun tail pipe 1 and spray gun inner tube 2
Enter molten steel.Shielding gas enters spray gun by shielding gas entrance, by the protection air-flow straight joint between spray gun outer tube 3 and spray gun inner tube 2
Molten steel is blown into, the jet that shielding gas can extend carrier gas is blown by the protection air-flow straight joint of central column, is made desulfurization powder go deep into steel
Inside liquid, so as to accelerate desulphurization reaction.In addition, shielding gas is blown into the temperature that can be reduced around spray gun pipette tips, extend side spray
The service life of rifle.When the front pipeline section 3a of spray gun outer tube 3 is damaged, the securing member on mounting flange 11 is pulled down, spray gun and smelting is made
Golden container departs from, and then backs out the front pipeline section 3a for having damaged, changes spare part, spray gun is being reinstalled in metallurgical tank finally
On.This kind of spray gun structure form ensure that when the front pipeline section 3a of spray gun outer tube is damaged, and facilitates spray gun local replacing consumable accessory, right
Reduce spare parts cost and there is realistic meaning.
Certainly, above-described embodiment technology design only to illustrate the invention and feature, its object is to make people much of that
Solution present disclosure is simultaneously implemented according to this, can not be limited the scope of the invention with this.It is all according to major technique of the present invention
Equivalent transformation or modification that the spirit of scheme is done, should all be included within the scope of the present invention.
Claims (9)
1. a kind of multi-functional metallurgical lance, it is characterised in that include：
Spray gun tail pipe (1) with main air blowing entrance (9)；
The spray gun inner tube (2) detachably connected with the spray gun tail pipe；And
Be detachably connected with the spray gun inner tube and spray gun outer tube (3) with shielding gas entrance (4)；
Spray gun outer tube (3) interval is set in the spray gun inner tube periphery and is entered with the shielding gas so as to be formed between
The protection air-flow straight joint of the central column that mouth (4) is connected.
2. multi-functional metallurgical lance according to claim 1, it is characterised in that one end welding of the spray gun tail pipe (1)
The one end for having tail pipe flange (5), the spray gun inner tube (2) is welded with interior pipe flange (6), one end weldering of the spray gun outer tube (3)
Be connected to outer pipe flange (7), the spray gun tail pipe (1), spray gun inner tube (2) and spray gun outer tube (3) by the tail pipe flange (5),
Interior pipe flange (6) and outer pipe flange (7) are detachably connected.
3. multi-functional metallurgical lance according to claim 1, it is characterised in that the tail pipe flange (5), interior pipe flange
(6) and outer pipe flange (7) is sequentially coaxially close to arrangement, and tail pipe flange (5), the interior pipe flange is axially located in by screw thread
(6) being bolted together and in outer pipe flange (7).
4. multi-functional metallurgical lance according to claim 1, it is characterised in that the spray gun inner tube (2) and spray gun outer tube
(3) the gap support member (8) for the positioning protection air-flow straight joint size therebetween is folded between.
5. multi-functional metallurgical lance according to claim 1, it is characterised in that the spray gun outer tube (3) is by detachably connecting
The front pipeline section (3a) for connecing and rear pipeline section (3b) are constituted.
6. multi-functional metallurgical lance according to claim 5, it is characterised in that the front pipeline section (3a) and rear pipeline section (3b)
It is detachably connected by threaded sleeve (12), the outer tube of the connection end of the front pipeline section (3a) and rear pipeline section (3b)
External screw thread is formed with wall, female thread on the inner tubal wall of the threaded sleeve (12), is formed with, the threaded sleeve (12) is enclosed within institute
State front pipeline section (3a) and rear pipeline section (3b) outward, and the female thread on the threaded sleeve (12) and the front pipeline section (3a) and after
External screw thread locking on pipeline section (3b) coordinates, so as to realize being detachably connected for the front pipeline section (3a) and rear pipeline section (3b).
7. multi-functional metallurgical lance according to claim 6, it is characterised in that the front pipeline section (3a) and rear pipeline section (3b)
Between be folded with seal washer (10).
8. multi-functional metallurgical lance according to claim 1, it is characterised in that be connected with use on the spray gun outer tube (3)
In the metallurgical lance is fixed on the mounting flange on metallurgical tank (11).
9. multi-functional metallurgical lance according to claim 1, it is characterised in that the spray gun outer tube (3) and the spray gun
Inner tube (2) is coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086149.1A CN106595317A (en) | 2016-11-30 | 2016-11-30 | Multifunctional metallurgical spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086149.1A CN106595317A (en) | 2016-11-30 | 2016-11-30 | Multifunctional metallurgical spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106595317A true CN106595317A (en) | 2017-04-26 |
Family
ID=58594451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611086149.1A Pending CN106595317A (en) | 2016-11-30 | 2016-11-30 | Multifunctional metallurgical spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106595317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058548A (en) * | 2022-05-31 | 2022-09-16 | 昌黎县兴国精密机件有限公司 | Supersonic hydrogen injection system based on Raoult nozzle and control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616206A (en) * | 1984-06-19 | 1986-01-11 | Mino Yogyo Kk | Lance pipe |
| CN201066311Y (en) * | 2007-07-16 | 2008-05-28 | 沈阳铝镁设计研究院 | Temperature measuring device for Ti deoxidization-distillation reactor |
| CN201250244Y (en) * | 2008-09-01 | 2009-06-03 | 东营方圆有色金属有限公司 | Non-ferrous metallurgy supersonic oxygen lance for oxygen bottom-blowing furnace |
| CN102312051A (en) * | 2010-07-07 | 2012-01-11 | 江苏省方通新型不锈钢制品股份有限公司 | Novel smelting preheating spray gun |
| CN203297798U (en) * | 2013-06-04 | 2013-11-20 | 无锡金顶石油管材配件制造有限公司 | High pressure delivery pipeline pipe end connector structure |
| CN203333700U (en) * | 2013-07-18 | 2013-12-11 | 中冶赛迪工程技术股份有限公司 | Pulse oxygen lance device |
| CN103620068A (en) * | 2011-04-29 | 2014-03-05 | 贝里金属公司 | Gas and particulate delivery system and method for metallurgical vessel |
| CN204661752U (en) * | 2015-05-25 | 2015-09-23 | 中条山有色金属集团有限公司 | A kind of oxygen-enriched bottom-blowing stove oxygen rifle |
-
2016
- 2016-11-30 CN CN201611086149.1A patent/CN106595317A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616206A (en) * | 1984-06-19 | 1986-01-11 | Mino Yogyo Kk | Lance pipe |
| CN201066311Y (en) * | 2007-07-16 | 2008-05-28 | 沈阳铝镁设计研究院 | Temperature measuring device for Ti deoxidization-distillation reactor |
| CN201250244Y (en) * | 2008-09-01 | 2009-06-03 | 东营方圆有色金属有限公司 | Non-ferrous metallurgy supersonic oxygen lance for oxygen bottom-blowing furnace |
| CN102312051A (en) * | 2010-07-07 | 2012-01-11 | 江苏省方通新型不锈钢制品股份有限公司 | Novel smelting preheating spray gun |
| CN103620068A (en) * | 2011-04-29 | 2014-03-05 | 贝里金属公司 | Gas and particulate delivery system and method for metallurgical vessel |
| CN203297798U (en) * | 2013-06-04 | 2013-11-20 | 无锡金顶石油管材配件制造有限公司 | High pressure delivery pipeline pipe end connector structure |
| CN203333700U (en) * | 2013-07-18 | 2013-12-11 | 中冶赛迪工程技术股份有限公司 | Pulse oxygen lance device |
| CN204661752U (en) * | 2015-05-25 | 2015-09-23 | 中条山有色金属集团有限公司 | A kind of oxygen-enriched bottom-blowing stove oxygen rifle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058548A (en) * | 2022-05-31 | 2022-09-16 | 昌黎县兴国精密机件有限公司 | Supersonic hydrogen injection system based on Raoult nozzle and control method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170426 |