CN104421937A - Flame gunning spray nozzle for refractory linings of industrial furnaces and application of flame gunning spray nozzle - Google Patents
Flame gunning spray nozzle for refractory linings of industrial furnaces and application of flame gunning spray nozzle Download PDFInfo
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- CN104421937A CN104421937A CN201310394959.3A CN201310394959A CN104421937A CN 104421937 A CN104421937 A CN 104421937A CN 201310394959 A CN201310394959 A CN 201310394959A CN 104421937 A CN104421937 A CN 104421937A
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- nozzle
- gunning
- flame
- oxygen
- refractory lining
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
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- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
- F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
- F27D1/1647—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
- F27D1/1652—Flame guniting; Use of a fuel
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- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
- F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
- F27D1/1647—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
- F27D1/1652—Flame guniting; Use of a fuel
- F27D2001/1663—Fluid fuel, e.g. gas
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a flame gunning spray nozzle for refractory linings of industrial furnaces. The flame gunning spray nozzle is an equipment component of a flame gunning device which is used for carrying out flame gunning on the refractory linings of the industrial furnaces and kilns when the refractory linings are in high-temperature states. The flame gunning spray nozzle comprises an inner sleeve, an outer sleeve, an inner spray pipe seat, an inner red-copper spray nozzle, nuts, an adjusting barrier, a corundum sleeve brick, an outer clamp sleeve, bolts, an embedded inner sleeve, spiral sheets and a supporting seat. The flame gunning spray nozzle has the advantages that oxygen and fuel gas with fluidized solid micro-particle-shaped gunning mixtures are respectively delivered to the spray nozzle from the outside; the oxygen and the fuel gas can be quickly and sufficiently preliminarily mixed with each other by the spray nozzle under the condition that the oxygen and the fuel gas are not combusted before the oxygen and the fuel gas are sprayed out, high-speed rotary flame can be instantly generated when the oxygen and the fuel gas are sprayed out, accordingly, the flame gunning spray nozzle is high in combustion speed and temperature and good in stability, and the quick diffused short flame can be generated; the refractory gunning mixtures are similarly spirally sprayed out at an outlet of the spray nozzle in a high-rotation mode and are large in diffusion area, and accordingly requirements of flame gunning processes can be met.
Description
Technical field
The present invention relates to industrial furnace, under kiln refractory lining is in the condition of high temperature, when flame gunning is carried out to it, and the visual plant parts of the flame gunning device used, and adjustment method in application process.
Background technology
Industrial furnace, kiln are in process of production, its refractory lining wall is subject to the high temperature erosion in burner hearth, thickness can be thinning gradually, or local occurs that badly damaged cannot continuation uses, when being close to the degree that can not maintain safety in production, now must stop produce, to remove non-serviceable old refractory lining one period, again build new refractory lining by laying bricks or stones, meet next stage safety in production requirement.No matter the refractory material quality degree that the industrial furnace refractory lining of building by laying bricks or stones at present uses, in process of production, effectively consumed and only accounted for fraction, and after all the other major parts are removed, the secondary refractory material extremely low as reuse ratio cleans out, and causes the wasting of resources.Spray repair improves inner lining refractory utilization rate important channel, the spray repair mode of the dry method that the refractory lining wall in fact under normal temperature state extensively adopts, semidry method, wet method is very effective, but the spray repair of the refractory lining wall be under the condition of high temperature can not be applied to because these spray repair modes gunning refractory all cannot be made to adhere to the condition of high temperature under refractory lining wall on.During production gap, various different industrial furnace refractory lining temperature has high and low difference, and generally between 800 ~ 1300 DEG C, in this temperature range, most refractory material is in solid state.The high-temperature flame-proof inner liner wall that gunning refractory touches now is rigid collision, will rebound and fall, and adhering to rate extremely low, gunning refractory and refractory lining wall cannot be made simultaneously to be sintered to one, can not reach the effect safeguarding furnace lining.Must make to need the refractory lining wall of spray repair local to continue to heat between 1500 ~ 1900 DEG C, be in high temperature fused state, now there is extremely strong adsorption capacity to spray repair to the gunning refractory on its surface, it is high that gunning refractory adhering to rate to refractory lining, and formation ceramic post sintering forms and is integrated very soon, safeguard or repair industrial furnace refractory lining excellent.
Industrial furnace refractory lining flame gunning device, can meet the spray repair of the refractory lining wall be under the condition of high temperature preferably.Flame gunning device self can produce nearly 3000 DEG C of thermal-flames, will need the local of gunned lining wall spray repair place, continues to be heated to high temperature fused state, simultaneously to the inner liner wall surface successively spray repair gun-mix refractory of spray repair place.As easy as rolling off a logly when gunning refractory touches high temperature fused state inner liner wall to be adsorbed, and be mounted to the inside, and be sintered into one, thinning refractory lining wall is restored thickenings, also can makes locally have badly damaged inner liner wall to be repaired.Thus enable refractory lining continue to use, extend its life-span, reduce refractory material use amount.Reduce industrial furnace, kiln maintenance, repair cost, improve its production operational availability.Flame gunning device is the nozzle by its parts flame gunning, oxygen and combustion gas mixing is sprayed, and the thermal-flame of burning generation rapidly aloft, the solid, powdery gunning refractory be simultaneously fluidized sprays with fuel gas high-speed, spray repair refractory lining wall surface.By manipulation flame gunning device, nozzle can be made to move freely in local space or rotate, when industrial furnace is completely motionless, change the position of its refractory lining wall of spray repair.
Summary of the invention
A kind of industrial furnace refractory lining of the present invention flame gunning nozzle is the vitals of flame gunning device, its principal character: nozzle by clad steel collar supports, and nozzle and flame gunning apparatus system is linked into an integrated entity.The oxygen provided by flame gunning apparatus system with carry the combustion gas being fluidized solid, powdery gunning refractory, be delivered to respectively in nozzle by clad steel sleeve pipe equally, oxygen is at the skin of clad steel sleeve pipe, and combustion gas is at internal layer.The oxygen that nozzle makes high pressure, low speed is transported to be transformed into therein normal pressure, at a high speed, strong rotated versions.Oxygen and the combustion gas of High Rotation Speed merge into one in nozzle interior, before nozzle ejection, completely not under combustion case, can carry out fast, premixed fully.Carry out well-mixed oxygen and combustion gas sprays at nozzle exit, present strong rotated versions equally, because the refractory lining wall of spray repair place closely stops, can produce burning rapidly, good stability, temperature be high, occur warp state, the short flame of fast spread formula.The short flame of this ultrahigh-temperature effectively reduces space heat elimination towards periphery, makes the refractory lining wall heating surface (area) (HS of spray repair place increase simultaneously, and quick heating, and the thermal efficiency is high.Gunning refractory presents the ejection of strong rotary spiral shape equally at nozzle exit, obtains scattering rapidly, uniformly, does not produce accumulation on contact inner liner wall surface, and the area that scatters is wide, matches with flame gunning technological requirement.
Nozzle-integrated high-temperature resistance extra-heavy, is in the hot environment in industrial furnace burner hearth during nozzle operation, the thermal-flame of exit burning abutted to nozzle, and flame runs into institute's gunned lining wall prevention simultaneously, and the warp flame portion caused will surround nozzle.In nozzle, rear utilizes its inner high speed air-flow to carry out from cooling, and the high temperature resistant sleeve brick that front end adopts the corundum material of high-temperature resistance extra-heavy to make, meets job requirement.Nozzle coordinates with the pneumatic control system of flame gunning device, oxygen before making to be transported to nozzle keeps stable high pressure, low flow velocity state, thus make the steel pipe of delivering oxygen, satisfy the demand use oxygen flow, ensure that oxygen is carried and is in permissible velocity prerequisite in steel pipe under, reduce its caliber and appearance and size.Under the state that delivering oxygen pressure remains unchanged, nozzle can change the oxygen flow of ejection by trace, thus oxygen flow can be adjusted to be conducive within flame gunning optimum range.Oxygen and combustion gas are at the axial flow velocity of nozzle interior mixed airflow, adjust to its flame velocity 8 ~ 10 times, effectively prevent the dangerous phenomenon producing burning or tempering in nozzle interior on the one hand, this burning or tempering endanger very serious, the high temperature resistant sleeve brick part internal layer of corundum can be made, be heated to high temperature fused state very soon, cause constantly very easily adhering to its inner surface through gun-mix refractory herein, and form the passage of accumulated plugging mixed airflow ejection.The mixed airflow of ejection at a high speed on the other hand, can prevent gunning refractory from striking needs the refractory lining wall surface of spray repair, and bounce-back is fallen and sticks to nozzle exit, stopped nozzles.The operation of flame gunning device needs staff's site supervision, when operating personnel leave working site, must stop flame combustion and spray repair.By mobile, swivel nozzle during work, change the position of spray repair refractory lining wall, regulate the distance between jet expansion to inner liner wall, and pay close attention to and adjust the pressure, flow etc. of oxygen, combustion gas at any time, make flame gunning be in optimum state all the time.
During flame gunning nozzle operation, the flame intensity of ejection is high, and maximum power reaches about 3MW, makes the gunning refractory heat temperature raising efficiency needing the refractory lining wall of spray repair and ejection high.Nozzle-integrated can long-time normal work in≤1200 DEG C of industrial furnace high-temperature burner hearth environment, the air-flow that nozzle and clad steel sleeve pipe mainly rely on the flowing of its inner high speed cools, and resists external high temperature and damages equipment component.At flame gunning system stalls, inside do not have air-flow by time, nozzle must be shifted out high-temperature burner hearth as early as possible, be placed in the space under normal temperature state.In the course of the work; may because of equipment fault or human operational error; make jet expansion to refractory lining span from close to too or be close together, spray after causing oxygen and combustion gas mixing and be obstructed, and when producing tempering; jet element is high temperature resistant corundum sleeve brick increases due to interior pressure; there is brittle fracture, its end Automatic-falling in middle weak part, ensures that mist ejection is unimpeded instantaneously; stop the generation of substantial equipment accident, namely nozzle has very strong automatic safe protective function.Nozzle operation bad environments, outside next-door neighbour's ultrahigh-temperature flame, there are high speed oxygen air-flow and swiftly flowing graininess gun-mix refractory in inside, to the intense impact of the inside and outside wall of conveyance conduit, wearing and tearing and erosion, some easily worn parts can be produced, as the high temperature resistant sleeve brick of corundum, the inner nozzle of red copper matter.Nozzle-integrated synchronous for service life with the parts of other flame gunning device in order to make, constantly change the easily worn part of nozzle.The demolition, installation of this nozzle are convenient, meet the requirement of quick-replaceable easily worn part.
Accompanying drawing explanation
Fig. 1 is that industrial furnace refractory lining flame gunning nozzle master of the present invention looks generalized section;
Fig. 2 is industrial furnace refractory lining flame gunning nozzle B direction view of the present invention;
Fig. 3 is oxygen stream Principle of Rotating A-A sectional view of the present invention.
In figure:
1, inner sleeve 2, outer tube 3, inner nozzle seat 4, red copper inner nozzle 5, nut
6, controllable register 7, corundum sleeve brick 8, outer cutting ferrule 9, bolt 10, embedded inner sleeve
11, flight 12, supporting seat.
Detailed description of the invention
The present invention is further described in conjunction with the accompanying drawings and embodiments:
As shown in Figure 1,3, the bilayer sleeve that industrial furnace refractory lining flame gunning nozzle consists of inner sleeve 1 and outer tube 2, is connected with flame gunning apparatus main body, and support nozzle.The oxygen provided by flame gunning apparatus main body and carry the combustion gas being fluidized solid granule shape gun-mix refractory, the inside and outside layer respectively by bilayer sleeve is delivered to nozzle, and combustion gas is at internal layer, and oxygen is at skin.Carry be fluidized solid granule shape gun-mix refractory combustion gas by inner sleeve 1 internal layer, sprayed through red copper inner nozzle 4 again by inner nozzle seat 3, enter the mixed zone of corundum sleeve brick 7 bore passage.The skin that the oxygen with constant pressure is connected with inner nozzle seat 3 by inner sleeve 1 and the passage that outer tube 2 internal layer forms, enter the multiple arranged side by side narrow screw type air channel be made up of red copper inner nozzle 4, embedded inner sleeve 10 and flight 11.Because of the back pressure that multiple narrow screw type air channel arranged side by side produces, change at the oxygen of flight 11 both sides the low-pressure state being bordering on normal pressure into from high pressure.Namely oxygen is carried by high pressure, axial low speed, transfers low pressure, the ejection of High Rotation Speed helical form to, enters the mixed zone of corundum sleeve brick 7 bore passage equally.In mixed zone, sufficient premixed is carried out in the oxygen stream of High Rotation Speed and combustion gas, also makes mixed airflow and solid granule shape gun-mix refractory simultaneously, the ejection in High Rotation Speed helical form in corundum sleeve brick 7.By changing the size of controllable register 6 internal orifice dimension, constant at maintenance delivering oxygen pressure almost constant, thus the oxygen flow changing ejection is how many.Make the mixed airflow axial flow velocity of the mixed zone at corundum sleeve brick 7 internal channel, control 8 ~ 10 times at its flame velocity.The mixed zone axial distance of corundum sleeve brick 7 bore passage is 4 ~ 6 times of internal aperture, and to ensure that oxygen and combustion gas are not producing under combustion case, elementary mixing is even.Mixed air-flow and gun-mix refractory, from ejection in corundum sleeve brick 7, present spiral scattering at once.Because the refractory lining wall of spray repair place closely stops, can produce burning rapidly, good stability, temperature be high, occur warp state, the short flame of fast spread formula, adds the hot gunning district refractory lining wall thermal efficiency high.Gun-mix refractory presents strong spiral fallaway type equally, ejection in corundum sleeve brick 7, and the area that scatters being sprayed onto refractory lining wall surface is large, meets the requirement of industrial furnace, kiln refractory lining flame gunning technique.
As shown in Figure 1, 2, 3, supporting seat 12 and outer tube 2 are rigidly connected, and inner nozzle seat 3 and inner sleeve 1 are rigidly connected.The active force elimination produced during nozzle operation, moving nozzle and swivel nozzle, be all the bilayer sleeve consisted of inner sleeve 1 and outer tube 2, cooperated by the miscellaneous equipment of flame gunning device.Embedded inner sleeve 10 is embedded in the endoporus of supporting seat 12 with friction tight form.Controllable register 6 is by supporting seat 12 and corundum sleeve brick 7 clamping and positioning.The male cone (strobilus masculinus) of corundum sleeve brick 7 is blocked by the internal taper hole of outer cutting ferrule 8, and outer cutting ferrule 8 is connected as a single entity with supporting seat 12 by bolt 9 and nut 5.Demolition, installation bolt 9, nut 5 make nozzle-integrated disintegration or assembling, are convenient for changing consumable accessory wherein and adjustment part, as red copper inner nozzle 4, flight 11, corundum sleeve brick 7, controllable register 6 parts and components.The inner side of flight 11 is connected with the outer surface of red copper inner nozzle 4, and the outside of flight 11 and the endoporus of embedded inner sleeve 10, one-tenth can disengaged blind-mate.During due to flame gunning formula nozzle operation, the two ends oxygen pressure difference of flight 11 is comparatively large, and the oxygen gas flow rate in spiral duct is very high.Touching high flow rate oxygen parts, as embedded inner sleeve 10, red copper inner nozzle 4, flight 11, controllable register 6 all adopt the metal material red copper of antioxygen property the best to make.Red copper inner nozzle 4 outer surface has high speed oxygen gas shock and erosion, and there is swiftly flowing graininess gun-mix refractory inside, and to wall HID wearing and tearing, life cycle is shorter than other parts and components, belongs to consumable accessory needs and often changes.Red copper inner nozzle 4 is thread connection with the inner nozzle seat 3 of steel, facilitates its regular demolition, installation to change.Owing to being nozzle-integratedly in≤1200 DEG C of hot environment spaces in work, its red copper matter parts and components high-temperature resistance is poor, directly contacts with hot environment.Hyperthermia radiation red copper matter parts and components damage capability is limited, and the high velocity air of inner normal temperature state, effectively cools it, resist the damage of high temperature to parts and components simultaneously.For high velocity air cooling benefit less than or poor effect, be directly subject to the parts and components of hyperthermia radiation with hot environment access, the heat-resistance stainless steel material making adopting high temperature resistant property good, as outer cutting ferrule 8, bolt 9, nut 5, supporting seat 12.Nozzle-integratedly can to work for a long time in≤1200 DEG C of hot environment spaces, flame gunning system stalls, inside do not have air-flow by time, namely cooling capacity be there is no to all parts and components, nozzle must be shifted out high-temperature burner hearth as early as possible, be placed in the space under normal temperature state.Corundum sleeve brick 7 is close to the thermal-flame of burning, also be suffer refractory lining wall stop and produce the most serious parts of warp flame high temperature erosion, endoporus has the oxygen stream of High Rotation Speed and is fluidized solid granule shape gun-mix refractory to the impact of its inwall, wearing and tearing, adopt corundum refractory material to make, there are high temperature resistance, anti-oxidant, the good nonmetallic materials of abrasion resistance properties simultaneously.Utilize the feature that corundum Material Strength is low, fragility is large, leave weak part in corundum sleeve brick 7 middle.When jet expansion is to refractory lining span from close to too or be close together; spray after causing oxygen and combustion gas mixing and be obstructed; and when producing tempering; because corundum sleeve brick 7 internal pressure increases, there is brittle fracture in middle weak part instantaneously, its end Automatic-falling; ensure that mist ejection is unimpeded; other parts and components of available protecting flame gunning device, stops the generation of substantial equipment accident, and namely nozzle has very strong automatic safe protective function.
Claims (10)
1. an industrial furnace refractory lining flame gunning nozzle, is characterized in that it comprises inner sleeve (1), outer tube (2), inner nozzle seat (3), red copper inner nozzle (4), nut (5), controllable register (6), corundum sleeve brick (7), outer cutting ferrule (8), bolt (9), embedded inner sleeve (10), flight (11), supporting seat (12);
The bilayer sleeve that described inner sleeve (1) and outer tube (2) form, is connected with flame gunning apparatus main body, and support nozzle; Carry be fluidized solid granule shape gun-mix refractory combustion gas by inner sleeve (1) internal layer, by inner nozzle seat (3) again through red copper inner nozzle (4) ejection, enter the mixed zone of corundum sleeve brick (7) bore passage; The skin that oxygen is connected with inner nozzle seat (3) by inner sleeve (1) and the passage that outer tube (2) internal layer forms, enter the multiple arranged side by side narrow screw type air channel be made up of red copper inner nozzle (4), controllable register (6), embedded inner sleeve (10) and flight (11), High Rotation Speed helical form sprays, and enters the mixed zone of corundum sleeve brick (7) bore passage equally; Sufficient premixed is carried out in the oxygen stream of High Rotation Speed and combustion gas, the ejection in High Rotation Speed helical form in corundum sleeve brick (7); Embedded inner sleeve (10) is embedded in friction tight form in the endoporus of supporting seat (12); Controllable register (6) is by supporting seat (12) and corundum sleeve brick (7) clamping and positioning; The male cone (strobilus masculinus) of corundum sleeve brick (7) is blocked by the internal taper hole of outer cutting ferrule (8), and outer cutting ferrule (8) is connected as a single entity with supporting seat (12) by bolt (9) and nut (5).
2. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1, it is characterized in that: described embedded inner sleeve (10), red copper inner nozzle (4), flight (11), controllable register (6) parts, the multiple arranged side by side narrow screw type air channel of composition, oxygen flow velocity in air channel is high, and the metal material red copper all adopting antioxygen property splendid makes.
3. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1, it is characterized in that: described corundum sleeve brick (7) adopts corundum refractory material to make, and has high temperature resistance, anti-oxidant, the good nonmetallic materials of abrasion resistance properties simultaneously; Utilize the feature that corundum Material Strength is low, fragility is large, leave weak part in corundum sleeve brick (7) middle; When jet expansion is to refractory lining span from close to too or be close together, spray after causing oxygen and combustion gas mixing and be obstructed, and when producing tempering, corundum sleeve brick (7) internal pressure increases, there is brittle fracture instantaneously in middle weak part, its end Automatic-falling, ensures that mist ejection is unimpeded; Namely nozzle has very strong automatic safe protective function.
4. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1, is characterized in that: describedly nozzle-integratedly move freely in local space or rotate, and when industrial furnace is completely motionless, changes the position of its refractory lining wall of spray repair.
5. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1,2, it is characterized in that: described by red copper inner nozzle (4), controllable register (6), embedded inner sleeve (10) and flight (11), the multiple arranged side by side narrow screw type air channel of composition produces back pressure, oxygen before making to be transported to nozzle keeps stable high pressure, low flow velocity state, by changing the size of controllable register (6) internal orifice dimension, constant at maintenance delivering oxygen pressure almost constant, thus the oxygen flow changing ejection is how many.
6. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1,2,5, it is characterized in that: described red copper inner nozzle (4) and steel inner nozzle seat (3) are thread connection, facilitate the regular demolition, installation of red copper inner nozzle (4) to change.
7. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1,2,5, it is characterized in that: described gunning refractory presents the ejection of strong rotary spiral shape at nozzle exit, obtain scattering rapidly, uniformly, accumulation is not produced at contact industrial furnace refractory lining wall surface, the area that scatters is wide, matches with flame gunning technological requirement.
8. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1,4, it is characterized in that: describedly do not arranging in dedicated cooling system situation, nozzle-integrated can repeated multiple times long-time normal work in≤1200 DEG C of industrial furnace high-temperature burner hearth environment, nozzle and clad steel sleeve pipe mainly rely on the swiftly flowing air-flow of its delivered inside and cool, and resist external high temperature and damage equipment component; At flame gunning system stalls, inside do not have air-flow by time, nozzle can shift out high-temperature burner hearth, is placed in the space under normal temperature state.
9. a kind of industrial furnace refractory lining flame gunning nozzle according to claim 1,2,5, is characterized in that: the air-flow after described oxygen and combustion gas mixing sprays in corundum sleeve brick (7), at once presents spiral scattering; Because the refractory lining wall of spray repair place closely stops, can produce burning rapidly, good stability, temperature be high, occur warp state, the short flame of fast spread formula, adds the hot gunning district refractory lining wall thermal efficiency high.
10. in hybrid channel axial flow velocity method when an industrial furnace refractory lining flame gunning nozzle adjustment oxygen and gas premixing close, it is characterized in that: oxygen and combustion gas are at the axial flow velocity of nozzle interior mixed airflow, adjust to its flame velocity 8 ~ 10 times, effectively prevent the dangerous phenomenon producing burning or tempering in nozzle interior on the one hand, the mixed airflow of ejection at a high speed on the other hand, can prevent gunning refractory from striking needs the refractory lining wall surface of spray repair, bounce-back is fallen and sticks to nozzle exit, stopped nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310394959.3A CN104421937A (en) | 2013-08-30 | 2013-08-30 | Flame gunning spray nozzle for refractory linings of industrial furnaces and application of flame gunning spray nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310394959.3A CN104421937A (en) | 2013-08-30 | 2013-08-30 | Flame gunning spray nozzle for refractory linings of industrial furnaces and application of flame gunning spray nozzle |
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| CN104421937A true CN104421937A (en) | 2015-03-18 |
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| CN201310394959.3A Pending CN104421937A (en) | 2013-08-30 | 2013-08-30 | Flame gunning spray nozzle for refractory linings of industrial furnaces and application of flame gunning spray nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006656A (en) * | 2014-02-24 | 2014-08-27 | 王世松 | Flame gunning nozzle for industrial furnace refractory lining |
| CN106402861A (en) * | 2016-11-11 | 2017-02-15 | 江苏弗雷姆环境科技有限公司 | Industrial gas ultralow-nitrogen energy-saving spiral combustion head and combustor |
| CN108917401A (en) * | 2018-08-28 | 2018-11-30 | 中国恩菲工程技术有限公司 | Spout tile assembly for smelting equipment |
| CN112113431A (en) * | 2020-10-26 | 2020-12-22 | 王世松 | Flame gunning machine for refractory lining of industrial furnace |
| CN116390898A (en) * | 2020-10-08 | 2023-07-04 | 瓦格斯塔夫公司 | Refractory nozzle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155014A (en) * | 1981-03-20 | 1982-09-25 | Nippon Sanso Kk | Gas fuel burner |
| US5295352A (en) * | 1992-08-04 | 1994-03-22 | General Electric Company | Dual fuel injector with premixing capability for low emissions combustion |
| CN2366815Y (en) * | 1999-01-06 | 2000-03-01 | 王世松 | Rotable sleeve type sand jetting apparatus for reparing inner refractory linings of industrial furnace |
| CN201145480Y (en) * | 2007-12-14 | 2008-11-05 | 天津钢管集团股份有限公司 | Horizontal type flame spray repair machine |
| CN201543814U (en) * | 2009-10-13 | 2010-08-11 | 天津钢管集团股份有限公司 | Ladle flame spray repair gun |
| CN102607275A (en) * | 2012-03-27 | 2012-07-25 | 王世松 | Flame gunning type nozzle |
-
2013
- 2013-08-30 CN CN201310394959.3A patent/CN104421937A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155014A (en) * | 1981-03-20 | 1982-09-25 | Nippon Sanso Kk | Gas fuel burner |
| US5295352A (en) * | 1992-08-04 | 1994-03-22 | General Electric Company | Dual fuel injector with premixing capability for low emissions combustion |
| CN2366815Y (en) * | 1999-01-06 | 2000-03-01 | 王世松 | Rotable sleeve type sand jetting apparatus for reparing inner refractory linings of industrial furnace |
| CN201145480Y (en) * | 2007-12-14 | 2008-11-05 | 天津钢管集团股份有限公司 | Horizontal type flame spray repair machine |
| CN201543814U (en) * | 2009-10-13 | 2010-08-11 | 天津钢管集团股份有限公司 | Ladle flame spray repair gun |
| CN102607275A (en) * | 2012-03-27 | 2012-07-25 | 王世松 | Flame gunning type nozzle |
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| CN104006656A (en) * | 2014-02-24 | 2014-08-27 | 王世松 | Flame gunning nozzle for industrial furnace refractory lining |
| CN106402861A (en) * | 2016-11-11 | 2017-02-15 | 江苏弗雷姆环境科技有限公司 | Industrial gas ultralow-nitrogen energy-saving spiral combustion head and combustor |
| CN108917401A (en) * | 2018-08-28 | 2018-11-30 | 中国恩菲工程技术有限公司 | Spout tile assembly for smelting equipment |
| CN108917401B (en) * | 2018-08-28 | 2024-03-19 | 中国冶金科工股份有限公司 | Spout brick assembly for smelting equipment |
| CN116390898A (en) * | 2020-10-08 | 2023-07-04 | 瓦格斯塔夫公司 | Refractory nozzle |
| CN112113431A (en) * | 2020-10-26 | 2020-12-22 | 王世松 | Flame gunning machine for refractory lining of industrial furnace |
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