CN205662532U - Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure - Google Patents
Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure Download PDFInfo
- Publication number
- CN205662532U CN205662532U CN201620556690.3U CN201620556690U CN205662532U CN 205662532 U CN205662532 U CN 205662532U CN 201620556690 U CN201620556690 U CN 201620556690U CN 205662532 U CN205662532 U CN 205662532U
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- Prior art keywords
- oxygen
- powder
- shower nozzle
- outlet
- boundling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model provides an electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure, including barral of a gun and shower nozzle tied in a bundle, the barral of a gun is including powder pipe, oxygen hose, gas pipe, water -cooling inner tube, water -cooling outer tube, powder entry subassembly and seal assembly, and shower nozzle tied in a bundle is equipped with that centre bore, epoxy aperture, ring fire the aperture and the directional room of burning, oxygen hose, gas pipe, water -cooling outer tube respectively with shower nozzle tied in a bundle welding, the powder pipe is pegged graft with shower nozzle tied in a bundle. The utility model discloses it has supersonic speed owner oxygen efflux to flow outer parcel at the powder, and the fluidic skin of supersonic speed owner oxygen is around having accompanyed high -temperature flaming for supersonic speed owner's oxygen efflux decay at center becomes slow, thereby main oxygen efflux is elongated. The utility model discloses when being applied to the electric arc furnace and smelting, dust and the oxygen blast can be gone on simultaneously to it to the penetration and the stirring strength in molten bath, still increases its distance of leaving the liquation face, thereby prolongs the life of shower nozzle tied in a bundle to improve main oxygen efflux.
Description
Technical field
This utility model relates to the injection apparatus in metallurgy industry for electric arc furnace smelting, surpasses particularly to a kind of electric arc furnace
Velocity of sound ring combustion boundling carbon oxygen lance and nozzle structure.
Background technology
Electric arc furnace oxygen blast, spray carbon, spray pulverized limestone etc. are a kind of Ferrous Metallurgy technology that new development in recent years is got up, and are modern
Electric furnace strengthening oxygen, the important means of increase chemical energy input.Preheat burner owing to furnace wall carbon oxygen lance is integrated with, cluster fluidic blows
Oxygen decarburization, the winding-up several functions such as carbon dust making foamed slag and second-time burning, can effectively reduce electric power consumption per ton steel, in the field of business obtains
Extensively application.
In order to extend the jet length of mainstream oxygen, increasing the gas stirring intensity to molten steel, numerous electric furnace oxygen lances is adopted
By boundling oxygen blast technology, as application number 201220742975.8,201120553225.1,201010123000.2,
201020518313.3,201220333503.7,02100466.8,200920023587.2 etc. described, i.e. at main oxygen stream Bearing score
The oxygen being provided around one layer of wake of your supersonic speed spout or a grate firing gas add one layer of oxygen wake burning, its wake oxygen
There is provided respectively by the pipeline that pressure, flow are different from mainstream oxygen.The carbon dust spray gun of prior art is general and electric arc furnace oxygen lance or
Split, or be arranged in parallel in same water-cooled body and form primary and secondary rifle, as application number 99223126.4,02214529.x,
200320123669.7,201320149882.9 etc..Due to the disturbance of electric arc dedusting in stove air-flow, hinder powder and arrive molten steel
Liquid level, reduces the utilization rate of carbon dust.Also there is the lance body structure of logical many main oxygens pipe blowing powder, but both typically can not be same
Time winding-up.
Supersonic airstream produced by prior art can not wrap up powder so that powder winding-up apart from relatively short and point
Dissipate, taken away by dedusting air-flow or fall at the top of the slag, not arriving the molten steel surface blown open by oxygen jet, constrain more efficient electricity
The development of arc stove smelting process, it is therefore necessary to study a kind of support oxygen blast, dust, Supersonic that combustion heating process is carried out simultaneously
Speed ring combustion boundling carbon oxygen lance and nozzle structure.
Utility model content
The deficiencies in the prior art in view of the above, the purpose of this utility model is that providing one to be suitable for electric arc furnace uses
Collection oxygen blast, dust, the ring of combustion heating functions combustion boundling carbon oxygen lance and nozzle structure, to reach to improve oxygen and powder
Range, improves powder utilization rate, extends its service life, improves the purpose of winding-up usefulness.
For reaching above-mentioned purpose, this utility model is achieved through the following technical solutions:
This utility model provides a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance and nozzle structure, including boundling shower nozzle and
Barral of a gun, described barral of a gun is mainly entered by the powder pipe being coaxially disposed, oxygen hose, Gas Pipe, water-cooled inner tube, water-cooled outer tube and powder
Mouth assembly, black box composition, and it is correspondingly provided with powder entrance, oxygen intake, fuel gas inlet, cooling water inlet, cooling respectively
Water out, described boundling shower nozzle is provided with centre bore, epoxy aperture, ring combustion aperture and burning orientation room, described oxygen hose, combustion gas
Pipe, water-cooled outer tube weld with described boundling shower nozzle respectively, described powder pipe and described boundling shower nozzle grafting.
Further, described barral of a gun described cooling water inner tube, cooling water outer tube weld together and with described black box
Flange joint and end face seal, described oxygen hose, Gas Pipe and described black box grafting by resilient sealing ring sealing, described
Powder pipe is threadeded and by rubber seal rings for seal with powder intake assembly, described powder intake assembly and described black box
Flange joint and end face seal.
Further, described boundling shower nozzle center bore inner wall and powder pipe outer wall are formed and accelerate main oxygen flow velocity to ultrasonic
Variable cross-section loop passage, main oxygen outlet exports and is listed in epoxy outlet, ring combustion outlet, powder at the bottom of described burning orientation room
Portion, the outlet of described powder is positioned at burning orientation room central authorities, and main oxygen outlet is peripheral and concentric in powder outlet, ring combustion outlet
Being alternately arranged around main oxygen outlet with epoxy outlet, epoxy import is positioned at oxygen hose inside diameter ranges, and ring combustion import is positioned at combustion
Between trachea and oxygen hose.
Using said structure, main oxygen obtains supersonic speed when by variable cross-section loop passage to accelerate, around main oxygen
Ring fires oxygen and ring combustion combustion gas orients room mixed combustion in burning, and high-temperature gas is adjoint and extrudes the formation of supersonic speed main oxygen air-flow
Cluster fluidic, makes center main oxygen supersonic jet diffusion and decay be slowed by, and supersonic jet extends, and can note through the top of the slag
Enter molten steel.
Use all kinds of metallurgical powder such as said structure, carbon dust or pulverized limestone or coal dust etc. that low-pressure gas can be used to input, fall
Low powder is to conveyance conduit and the abrasion of spray gun powder pipe, and injection electric arc furnace steel under the sweeping along of supersonic speed boundling main oxygen stream
Liquid, it is to avoid swept away by dedusting air-flow or trickle down at the top of the slag, improves powder utilization rate.
Use said structure, the powder pipe being worn can be changed in time, extend the use of electric furnace clustering ring combustion carbon oxygen lance
Life-span.
Use said structure, boundling shower nozzle can be convenient for changing, retain the barral of a gun without damaging.
Using said structure, water collar protects oxygen hose, Gas Pipe and powder pipe simultaneously, extends ring combustion boundling carbon oxygen lance
Service life.
Using said structure, electric arc furnace carbon oxygen lance can realize multi-functional smelting: when only needing to dust without oxygen blast, closes combustion
Gas and oxygen, and it is passed through inert protective gas, electric arc furnace carbon oxygen lance becomes podwer gun；When only needing oxygen blast without dusting, powder pipe
Stopping powder and input and be passed through inert protective gas, electric arc furnace carbon oxygen lance becomes oxygen-blowing gun；When only needing combustion heating, powder pipe stops
Only powder inputs and is passed through combustion gas, and electric arc furnace carbon oxygen lance becomes burner；Powder pipe afterbody installs photographic head or infrared temperature sensing
When device or flame monitoring sensor, electric arc furnace carbon oxygen lance can become monitoring device.
Compared with prior art, the utility model has the advantage of:
1, a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance of the present utility model and nozzle structure, powder and oxygen are used
Can coaxially, be simultaneously entered electric arc furnace, powder can inject molten steel under the parcel of oxygen, it is achieved heating by O2 blowing is fluxed, cutting
Steel scrap, making foamed slag and powder injection desulphurization.
2, a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance of the present utility model and nozzle structure are used, it is possible to extend main
Effective flow process of oxygen jet, and then improve its distance leaving molten steel face, invades boundling shower nozzle reducing slag liquid and electric arc
Erosion, thus improve the usefulness of its injection, extend the service life of boundling shower nozzle.
3, a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance of the present utility model and nozzle structure, oxygen rifle and carbon dust are used
Rifle is protected by same water cold sleeve, adds arc furnace equipment function, decreases arc furnace equipment quantity.
4, a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance of the present utility model and nozzle structure are used, it is possible to use low
Body of calming the anger conveying powder, reduces powder to conveyance conduit and the abrasion of spray gun powder pipe, improves barral of a gun service life.
Other advantages of the present utility model, target and feature will be explained to a certain extent in the following description
State, and to a certain extent, will be apparent to those skilled in the art based on to investigating hereafter, or
Person can be instructed from practice of the present utility model.Target of the present utility model and other advantages can be said by following
Bright book realizes and obtains.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing to this practicality
Novel it is described in further detail, wherein:
Fig. 1 is the structural representation of boundling shower nozzle in this utility model；
Fig. 2 is the structural representation of barral of a gun in this utility model；
Fig. 3 is the bottom schematic view of boundling shower nozzle in this utility model；
Reference: 1-powder pipe, 2-oxygen hose, 3-Gas Pipe, 4-water-cooled inner tube, 5-water-cooled outer tube, 6-boundling shower nozzle,
7-black box, 8-powder intake assembly, 9-powder entrance, 10-oxygen intake, 11-fuel gas inlet, 12-cooling water inlet,
13-coolant outlet, 14-powder exports, and 15-main oxygen exports；Wherein, 60-centre bore, 61-epoxy aperture, the combustion of 62-ring is little
Hole, 63-burning orientation room, 611-epoxy entrance, 612-epoxy exports, 621-ring combustion entrance, the combustion outlet of 622-ring.
Detailed description of the invention
Hereinafter preferred embodiment of the present utility model will be described in detail；Should be appreciated that preferred embodiment is only
Explanation this utility model rather than in order to limit protection domain of the present utility model.
As Figure 1-3, a kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance and nozzle structure, spray including barral of a gun and boundling
6, this barral of a gun includes powder pipe 1, oxygen hose 2, Gas Pipe 3, water-cooled inner tube 4 and water-cooled outer tube 5, the Yi Jimi being coaxially disposed
Sealing assembly 7 and powder intake assembly 8, and be correspondingly provided with respectively powder entrance 9, oxygen intake 10, fuel gas inlet 11, cooling water enter
Mouth 12 and coolant outlet 13, this boundling shower nozzle includes centre bore 60, epoxy aperture 61, ring combustion aperture 62 and burning orientation room
63, described oxygen hose 2, Gas Pipe 3, water-cooled outer tube 5 weld with described boundling shower nozzle 6 respectively, described powder pipe 1 and described boundling
Shower nozzle 6 grafting；
Concrete, in structure of the present utility model, outside powder pipe 1, oxygen hose 2, Gas Pipe 3, water-cooled inner tube 4 and water-cooled
Pipe 5 is the most sequentially coaxially arranged, and is i.e. arranged with oxygen hose 2 outside powder pipe 1, is arranged with Gas Pipe 3, combustion gas outside oxygen hose 2
It is arranged with water-cooled inner tube 4 outside pipe 3, is arranged with water-cooled outer tube 5 outside water-cooled inner tube 4, and makes them have same central axis；Powder
It is powder passage in agent pipe 1, is oxygen channel between oxygen hose 2 and powder pipe 1, lead to for combustion gas between oxygen hose 2 and Gas Pipe 3
Road, for cooling water intake tunnel between water-cooled inner tube 4 and Gas Pipe 3, goes out for cooling water between water-cooled outer tube 5 and water-cooled inner tube 4
Aquaporin, wherein, described powder pipe 1 is flowed into powder, this powder by the powder entrance 9 on powder intake assembly 8 in powder passage
Agent is one or more mixed dust formulation in carbon dust, pulverized limestone, coal dust or other material powder；Described oxygen hose 2 is entered by oxygen
Mouthfuls 10 are passed through main oxygen to oxygen channel, wrap powder forming primary oxygen jets at boundling shower nozzle 6；Described Gas Pipe 3 is led to
Crossing fuel gas inlet 11 and be passed through combustion gas to blast tube, the thermal-flame that this fuel gas buring produces compresses primary oxygen jets further,
Form farther main oxygen cluster fluidic；Water-cooled inner tube 4 flows into low temperature cold by cooling water inlet 12 to cooling water intake tunnel
But water, then flowed out by the coolant outlet 13 of water-cooled outer tube 5 after boundling shower nozzle 6 transition flows into cooling water exhalant canal.This reality
With novel powder and oxygen can coaxially, be simultaneously entered electric arc furnace, powder can inject molten steel under the parcel of oxygen, it is achieved
Heating by O2 blowing is fluxed, cutting steel scrap, making foamed slag and powder injection desulphurization；And effective flow process of primary oxygen jets can be extended, enter
And improve its distance leaving molten steel face, to reduce the erosion to boundling shower nozzle of slag liquid and electric arc, thus improve the effect of its injection
Can, extend the service life of boundling shower nozzle；Meanwhile, oxygen rifle and toner applicator are protected by same water cold sleeve, add electric arc furnace and set
Standby function, decreases arc furnace equipment quantity；Additionally it is possible to use low-pressure gas conveying powder, reduce powder to conveying pipe
Road and the abrasion of spray gun powder pipe, improve barral of a gun service life.
In the present embodiment, the described cooling water inner tube 4 of described barral of a gun, cooling water outer tube 5 weld together and close with described
Sealing assembly 7 Flange joint and end face seal, described oxygen hose 2, Gas Pipe 3 and the grafting of described black box 7 by elastic packing
Ring seals, and described powder pipe 1 is threadeded and by rubber seal rings for seal with powder intake assembly 8, described powder intake assembly 8
With described black box 7 Flange joint and end face seal；
Concrete, in structure of the present utility model, threaded by rubber with powder intake assembly 8 in powder pipe 1 one end
Sealing ring (unmarked) seals, the other end and boundling shower nozzle 6 socket connection；Oxygen hose 2 one end is with black box 7 socket connection also
Being sealed by elastic sealing ring (unmarked), the other end is welded to connect with boundling shower nozzle 6；Gas Pipe 3 one end and black box 7 grafting
Connecting and sealed by elastic sealing ring (unmarked), the other end is welded to connect with boundling shower nozzle 6；Water-cooled inner tube 4 is away from boundling
One end of shower nozzle 6 is welded together with water-cooled outer tube 5；Water-cooled outer tube 5 one end is connected to powder entrance by black box 7
Assembly 8, the other end is welded to connect with boundling shower nozzle 6；The two ends of black box 7 be equipped with flange and respectively with powder intake assembly
8 and water-cooled outer tube 5 on set companion flange connect, and close by metal coating type pad (unmarked) at each Flange joint end face
Envelope.So so that the assembling of this carbon oxygen lance and nozzle structure is simple, and safe and reliable, and make the replacing of boundling shower nozzle
It is also convenient for.
In the present embodiment, centre bore 60 inwall of described boundling shower nozzle 6 is formed with powder pipe 1 outer wall and accelerates main oxygen flow velocity
To ultrasonic variable cross-section loop passage, main oxygen outlet 15 and epoxy outlet 612, ring fire outlet 622, that powder exports 14 is arranged side by side
Bottom described burning orientation room 63, described powder outlet 14 is positioned at burning orientation room 63 central authorities, and main oxygen outlet 15 is at powder
Exporting 14 peripheral and concentric, ring combustion outlet 622 exports 15 with epoxy outlet 612 around main oxygen and is alternately arranged, and epoxy enters
Mouth 611 is positioned at oxygen hose 2 inside diameter ranges, and ring combustion import 621 is between Gas Pipe 3 and oxygen hose 2；
Concrete, in structure of the present utility model, boundling shower nozzle 6 includes centre bore 60, is distributed around centre bore 60
Epoxy aperture 61 and ring combustion aperture 62 and be provided with in the one end away from water-cooled outer tube 5 in inner concavity and with centre bore 60, ring
The burning orientation room 63 that oxygen aperture 61 connects with ring combustion aperture 62；Powder pipe 1 inserts in centre bore 60, its outer wall and centre bore 60
Inwall is formed with acceleration main oxygen flow velocity and is positioned at center to ultrasonic variable cross-section loop passage (unmarked), its powder outlet 14
The outlet central authorities in hole 60, i.e. variable cross-section loop passage connect with the oxygen channel of oxygen hose 2 and are exported 15 by main oxygen thereon
Output main oxygen；Epoxy import 611 on epoxy aperture 61 between powder pipe 1 and oxygen hose 2, i.e. epoxy aperture 61 and oxygen
The connection of the oxygen channel of trachea 2 is also exported 612 output rings combustion oxygen by epoxy thereon；Ring combustion import on ring combustion aperture 62
621 between oxygen hose 2 and Gas Pipe 3, i.e. ring combustion aperture 62 connects with the blast tube of Gas Pipe 3 and by the combustion outlet of its ring
622 output ring combustion combustion gas；Main oxygen outlet 15, epoxy outlet 611, ring combustion outlet 621 and powder outlet 14 all and are listed in burning
Bottom orientation room 63；Main oxygen outlet 15 is peripheral in powder outlet 14 and concentric with powder outlet 14, epoxy outlet 612 and ring combustion
Outlet 622 is alternately evenly arranged around described main oxygen outlet 15.So, in variable cross-section loop passage can make oxygen channel
Obtain supersonic speed when main oxygen passes through to accelerate；The fuel gas (ring combustion combustion gas) of ring combustion aperture outflow and helping that epoxy aperture flows out
Combustion gas body (ring combustion oxygen) mixes in burning orientation room, the Supersonic that ejection burning orientation room's after-combustion center squeezing flow out
Speed primary oxygen jets, to form cluster fluidic；Carbon dust or the various powder such as pulverized limestone or coal dust that powder pipe flow goes out are collecting beam
Injection molten steel under the sweeping along of stream.
To sum up, this utility model increases around with high-temperature hot air-flow at the outer layer of supersonic jet, makes central supersonic
Jet extension and decay are less, and supersonic jet is longer.Apply when electric arc furnace smelting, oxygen jet and powder stream can be improved
Penetration depth and stirring intensity to molten bath, simultaneously because effluxvelocity decay delays, can improve the blowing rifle position of oxygen rifle, and not
Affect the jet impact depth to molten steel, extend the service life of boundling shower nozzle.
This utility model is applied to the embodiment of electric arc furnace smelting and achieves following effect:
1) nozzle structure of the present embodiment is compared with existing nozzle structure, and manufacture difficulty is substantially reduced；
2) lance body structure of the present embodiment is compared with existing lance body structure, more reasonable structure, and assembling is simpler, changes more
Convenient.
3) the ring combustion boundling carbon oxygen lance of the present embodiment is compared with existing carbon oxygen lance, and more compact structure, the life-span is longer；
4) the present embodiment ring combustion boundling carbon oxygen lance compared with existing carbon oxygen lance, it is provided that function more, jet is longer, property
Can more preferably, usefulness is higher.
Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng
According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, and without deviating from objective and the scope of the technical program, it all should
Contain in the middle of right of the present utility model.
Claims (3)
1. electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance and a nozzle structure, including boundling shower nozzle and barral of a gun, it is characterised in that:
Described barral of a gun is mainly by the powder pipe being coaxially disposed, oxygen hose, Gas Pipe, water-cooled inner tube, water-cooled outer tube and powder entrance group
Part, black box form, and be correspondingly provided with powder entrance respectively, oxygen intake, fuel gas inlet, cooling water inlet, cooling water go out
Mouthful, described boundling shower nozzle is provided with centre bore, epoxy aperture, ring combustion aperture and burning orientation room, described oxygen hose, Gas Pipe, water
Cold outer tube welds with described boundling shower nozzle respectively, described powder pipe and described boundling shower nozzle grafting.
A kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance the most according to claim 1 and nozzle structure, it is characterised in that:
The described cooling water inner tube of described barral of a gun, cooling water outer tube weld together and close with described black box Flange joint and end face
Envelope, described oxygen hose, Gas Pipe and described black box grafting by resilient sealing ring sealing, described powder pipe and powder entrance
Assembly is threaded and by rubber seal rings for seal, and described powder intake assembly is close with described black box Flange joint and end face
Envelope.
A kind of electric arc furnace supersonic speed ring combustion boundling carbon oxygen lance the most according to claim 2 and nozzle structure, it is characterised in that:
Described boundling shower nozzle center bore inner wall and powder pipe outer wall are formed and accelerate main oxygen flow velocity extremely ultrasonic variable cross-section loop passage,
Main oxygen outlet and epoxy outlet, ring combustion outlet, powder export and are listed in bottom described burning orientation room, described powder outlet position
In burning orientation room central authorities, main oxygen outlet is peripheral and concentric in powder outlet, and ring combustion outlet exports around master with epoxy
Oxygen outlet is alternately arranged, and epoxy import is positioned at oxygen hose inside diameter ranges, and ring combustion import is between Gas Pipe and oxygen hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620556690.3U CN205662532U (en) | 2016-06-06 | 2016-06-06 | Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620556690.3U CN205662532U (en) | 2016-06-06 | 2016-06-06 | Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205662532U true CN205662532U (en) | 2016-10-26 |
Family
ID=57157428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620556690.3U Withdrawn - After Issue CN205662532U (en) | 2016-06-06 | 2016-06-06 | Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205662532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838845A (en) * | 2016-06-06 | 2016-08-10 | 中冶赛迪工程技术股份有限公司 | Supersonic circulating combustion coherent arbon-oxygen lance of electric arc furnace and spray head structure |
| CN112705372A (en) * | 2020-12-28 | 2021-04-27 | 郑州立佳热喷涂机械有限公司 | Coaxial combustion jet type inner hole supersonic speed spray gun |
-
2016
- 2016-06-06 CN CN201620556690.3U patent/CN205662532U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838845A (en) * | 2016-06-06 | 2016-08-10 | 中冶赛迪工程技术股份有限公司 | Supersonic circulating combustion coherent arbon-oxygen lance of electric arc furnace and spray head structure |
| CN112705372A (en) * | 2020-12-28 | 2021-04-27 | 郑州立佳热喷涂机械有限公司 | Coaxial combustion jet type inner hole supersonic speed spray gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161026 Effective date of abandoning: 20180403 |