CN2911443Y - Flame cutting torch of large slab gas cutting apparatus - Google Patents
Flame cutting torch of large slab gas cutting apparatus Download PDFInfo
- Publication number
- CN2911443Y CN2911443Y CN 200620090767 CN200620090767U CN2911443Y CN 2911443 Y CN2911443 Y CN 2911443Y CN 200620090767 CN200620090767 CN 200620090767 CN 200620090767 U CN200620090767 U CN 200620090767U CN 2911443 Y CN2911443 Y CN 2911443Y
- Authority
- CN
- China
- Prior art keywords
- hole
- cutting
- oxygen
- section
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Gas Burners (AREA)
Abstract
The utility model relates to a cutting nozzle for large-scale plate blank gas cutter comprising a hexagon head body, a preheating oxygen through-hole, a gas through-hole and a cutting oxygen through-hole, the utility model has the technical advantages that the ring of the preheating oxygen through-hole and the gas through-hole is communicated with an air intake end of the cavity, which is provided with a diagonal switch port respectively to connect with the adapter of the through-hole of each other, the air intake end of the cutting oxygen through hole is provided with a goblet-shaped hole shrinkage section, an inverted cone-shaped expanding section is positioned on the vent port, an isometric sizing section is connected with the end of the hole shrinkage section and the head end of the expanding section in transition. The utility model is reasonable in configuration with even gas mixture and full combustion, with a long frontal line in major fire wire and smooth profile, the utility model can effectively overcome the deficiencies on prior technology as short time in continuous cutting work and unclear profile steel billet, by which the cutting quality and work efficiency for the steel billet cutting are improved obviously, and metal loss is reduced further, and the service life of the cutting nozzle prolongs.
Description
Technical field
The utility model relates to the flame cutting nozzle of the hot steel billet of cutting that a kind of steel and iron industry cutter uses, particularly a kind of heavy slab combustion gas cutter flame cutting nozzle that cuts the hot steel billet of continuous casting and rolling.
Background technology
At present, steel and iron industry cutting steel billet generally all will be according to the specification or the actual needs of blank, deciding is to adopt flame cutter or adopt the flying shear operation, adopts oxygen-combustion gas flame cutters such as (acetylene or coal gas) to cut mostly for the hot steel billet of continuous casting and rolling.Normally used combustion gas cutter flame cutting nozzle mainly contains two kinds of forms: one is traditional jet absorption type embedding core muzzle formula cutting torch, penetrate in the cutting oxygen through hole of the main live wire of this cutting torch (forward line of cutting flame) by the embedding core, spray in the oxygen-combustion gas mixing vent hole of preheat flame (flame of heating cut workpiece incision tract) by premix.Inhomogeneous because of what mix at the gaseous mixture of mixing chamber premix, preheat flame burning insufficient, tangent plane is rough, the easy viscous splash of mouth face slag liquid.The pressure of preheat oxygen is greater than the pressure of combustion gas in the gaseous mixture mixed process, so cutting is hampered or " tempering " phenomenon easily takes place misoperation, handles untimely mixing chamber that will the scaling loss cutter, in the time of seriously the gas explosion accident will take place.Its two for be specifically designed to the cutting hot steel billet the hexagonal cutting torch, this cutting torch comprises the body that has turret head and is provided with and is communicated with not connected preheat oxygen through hole, combustion gas through hole and the cutting oxygen through hole of steam line separately respectively in it, main live wire is by spraying in the cutting oxygen through hole, and preheat flame is blended together by the gas that sprays in preheat oxygen through hole and the combustion gas through hole.Because of its oxygen-fuel gas mixture is to mix in cutting torch through hole exit, undercompounding, the source of the gas consumption is big, and flame is not concentrated and waited is the defective that can't overcome that the cutting torch structure exists, thus cause cutting speed slow, the cutting slit width of steel billet, the waste of steel consumption is big.The patent No. is that 00217896.3 " a kind of combustion gas cutting torch " and the patent No. are 98247455.5 hexagonal cutting torch such as " a kind of flame cutter cutting torch ", though solved the problem that the jet absorption type cutting torch exists to a certain extent, but because of the preheat oxygen through hole on the cutting torch body, the air intake end of combustion gas through hole is not communicated with mutually, the hole negative camber of cutting oxygen through hole waits design unreasonable for unformed section, so oxygen-fuel gas mixture is at cutting torch exit incomplete mixing, the preheat flame burning is insufficient, influence the heating-up temperature of cutting zone, this not only weakens the forward line length of main live wire, and reduced the thermal effect that adds of preheat flame, the continuous cutting working time of cutting torch is short, the tangent plane corner angle of steel billet are unintelligible, cutting speed and cutting operating efficiency that this had both influenced steel billet are difficult to again keep tangent plane smooth, smooth state.
The utility model content
The purpose of this utility model provides a kind of heavy slab combustion gas cutter flame cutting nozzle, its structure distribution is reasonable, it is even that gaseous mixture mixes, sufficient combustion, and main live wire forward line is long, tangent plane is smooth, overcome the continuous cutting working time weak point that prior art exists effectively, the unsharp defective of tangent plane corner angle of steel billet significantly improves the cut quality of steel billet and cuts operating efficiency, metal loss when further reducing cutting, the service life of prolongation cutting torch.
The purpose of this utility model is achieved in that this cutting torch comprises the body that has turret head and is provided with and is communicated with preheat oxygen through hole, combustion gas through hole and the cutting oxygen through hole of steam line separately respectively in it, its technical essential is: the air intake end in the annular connected chamber of described preheat oxygen through hole and combustion gas through hole, the through hole reducing end that oblique connecting hole connects the other side is set respectively, the air intake end of cutting oxygen through hole is provided with goblet shape undergauge section, the gas outlet end is provided with inversed taper platform shape extension diameter section, and transition is connected isometrical typing section between undergauge Duan Weiduan and the extension diameter section head end.
Because the utility model is improved on the architecture basics of hexagonal cutting torch, with the air intake end in the annular connected chamber of intrinsic preheat oxygen through hole and combustion gas through hole, the through hole reducing end that oblique connecting hole connects the other side is set respectively, come the pressure of balance and adjusting gas outlet, reach the effect that the incision of gas rotation direction mixes and form the spiral air flow ejection simultaneously, its structure distribution is reasonable, it is even that gaseous mixture mixes, so this can not only make the mixture combustion of preheat oxygen and combustion gas more abundant, further improve the temperature of preheat flame, and the flow velocity of increase gas-flow, prevent the generation of " tempering " accident effectively.In addition, air intake end at cutting oxygen through hole is provided with goblet shape undergauge section, the gas outlet end is provided with inversed taper platform shape extension diameter section, transition is connected isometrical typing section between undergauge Duan Weiduan and the extension diameter section head end, with existing similar cutting torch relatively, can make cutting oxygen obtain the main live wire of length of the flow speed stability of energy maximum according to aerodynamics, it is narrow to reach the cutting seam, tangent plane is vertical, smooth, and otch is chamfered edge not, and splashings are the purpose of sticking cutting torch face not.Therefore, this cutting torch had both overcome the continuous cutting working time weak point that prior art exists effectively, and the unsharp defective of tangent plane corner angle of steel billet has significantly improved the cut quality of steel billet again and cut operating efficiency, metal loss when further reducing cutting, the service life of prolongation cutting torch.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is a kind of structure for amplifying schematic diagram of cutting oxygen through hole among Fig. 1.
The specific embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1-4.This cutting torch is in addition improved on the architecture basics of existing hexagonal cutting torch.It comprises the body 1 that has turret head and is provided with and is communicated with preheat oxygen through hole 2, combustion gas through hole 8 and the cutting oxygen through hole 6 of steam line separately respectively in it.Wherein the specification of body 1 and be provided with preheat oxygen through hole 2, combustion gas through hole 8 and cutting oxygen through hole 6 in it aperture, hole quantity what, should be definite according to the specific requirement of cutting steel billet and used combustion gas.
Pressure for balance and adjusting gas outlet, reach the effect that the incision of gas rotation direction mixes and form the spiral air flow ejection simultaneously, with the air intake end in the annular connected chamber 4,5 of the preheat oxygen through hole 2 of body 1 and combustion gas through hole 8, the through hole reducing end that oblique connecting hole 7,3 connects the other side is set respectively.Be the oblique connecting hole 7 of the air intake end in the annular connected chamber 4 of preheat oxygen through hole 2, connect the reducing end of combustion gas through hole 8; The oblique connecting hole 3 of the air intake end in the annular connected chamber 5 of combustion gas through hole 8 connects the reducing end of preheat oxygen through hole 2.
For making cutting oxygen obtain the main live wire of length of the flow speed stability of energy maximum according to aerodynamics, air intake end at the cutting oxygen through hole 6 of body 1 is provided with goblet shape undergauge section 9, the gas outlet end is provided with inversed taper platform shape extension diameter section 11, transition is connected isometrical typing sections 10 between the not end of undergauge section 9 and the head end of extension diameter section 11, thereby make the shape of cutting oxygen through hole 6 be in best curve form, reduce the resistance of gas effectively and to the coefficient of friction of conduit wall, the length that prolongs main live wire.Therefore, compare with existing similar cutting torch, the air-flow of its gas outlet could obtain maximum energy, forms the main live wire of length of flow speed stability, and it is narrow to reach the cutting seam, and tangent plane is vertical, smooth, and otch is chamfered edge not, and splashings do not glue the purpose of cutting torch face.
The use of this cutting torch is identical with existing cutting torch with method of operating.
Claims (1)
1, a kind of heavy slab combustion gas cutter flame cutting nozzle, comprise the body that has turret head and be provided with and be communicated with preheat oxygen through hole, combustion gas through hole and the cutting oxygen through hole of steam line separately respectively in it, it is characterized in that: the air intake end in the annular connected chamber of described preheat oxygen through hole and combustion gas through hole, the through hole reducing end that oblique connecting hole connects the other side is set respectively, the air intake end of cutting oxygen through hole is provided with goblet shape undergauge section, the gas outlet end is provided with inversed taper platform shape extension diameter section, and transition is connected isometrical typing section between undergauge Duan Weiduan and the extension diameter section head end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090767 CN2911443Y (en) | 2006-05-12 | 2006-05-12 | Flame cutting torch of large slab gas cutting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090767 CN2911443Y (en) | 2006-05-12 | 2006-05-12 | Flame cutting torch of large slab gas cutting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2911443Y true CN2911443Y (en) | 2007-06-13 |
Family
ID=38133306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090767 Expired - Fee Related CN2911443Y (en) | 2006-05-12 | 2006-05-12 | Flame cutting torch of large slab gas cutting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2911443Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319879A (en) * | 2011-08-04 | 2012-01-18 | 陈寅明 | Planar continuous casting cutting nozzle |
| WO2014079179A1 (en) * | 2012-11-20 | 2014-05-30 | 机械科学研究院哈尔滨焊接研究所 | Cutting torch for cutting ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot and cutting process of the cutting torch |
-
2006
- 2006-05-12 CN CN 200620090767 patent/CN2911443Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319879A (en) * | 2011-08-04 | 2012-01-18 | 陈寅明 | Planar continuous casting cutting nozzle |
| WO2014079179A1 (en) * | 2012-11-20 | 2014-05-30 | 机械科学研究院哈尔滨焊接研究所 | Cutting torch for cutting ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot and cutting process of the cutting torch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2911443Y (en) | Flame cutting torch of large slab gas cutting apparatus | |
| CN2358343Y (en) | Nozzle of flame cutting torch | |
| CN2784108Y (en) | Energy-saving continuous casting cutting nozzle | |
| CN102825345A (en) | Combined straight shank thread milling cutter | |
| CN101968221A (en) | Pressing handle type injection cutting torch | |
| CN102950359B (en) | 2000-to-3500mm super-thick low-carbon and low-alloy steel ingot cutting process | |
| CN102997243B (en) | Cutting torch for cutting ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot | |
| CN2586068Y (en) | Jet sucking cutting torch | |
| CN201166370Y (en) | Continuous casting cutting gun | |
| WO2014079179A1 (en) | Cutting torch for cutting ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot and cutting process of the cutting torch | |
| CN2830903Y (en) | High efficiency energy saving jetting gas cooker core | |
| CN205690397U (en) | A kind of quick cutting-off nozzle of continuous casting steel | |
| CN202779670U (en) | Improved flame cutting gun nozzle | |
| CN2793559Y (en) | Unjuncted billet cutting nozzle of cutter | |
| CN102328042A (en) | Integral continuous casting cutting nozzle and processing method thereof | |
| CN201526973U (en) | Ejection and absorption type propane flame cutting nozzle | |
| CN200946808Y (en) | Natural gas flame cutting nozzle | |
| CN218310755U (en) | Energy-saving water-cooling type heavy flame accident cutting gun for continuous casting of square billets | |
| CN2339863Y (en) | Gas mixing apparatus for welding-cutting torch | |
| CN204187624U (en) | A kind of energy-saving cutting torch structure | |
| CN209445361U (en) | A kind of Synergistic natural gas cutting torch | |
| CN218152369U (en) | Linear flow control valve of continuous casting slab cutting torch | |
| CN2921602Y (en) | Pressed cutting torch for liquid fuel cutting blowpipe use | |
| CN202741869U (en) | Combined straight handle type thread milling cutter | |
| CN203215676U (en) | Efficient gas cutting head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |