CN202152352U - Coal injection gun of blast furnace - Google Patents
Coal injection gun of blast furnace Download PDFInfo
- Publication number
- CN202152352U CN202152352U CN2011202456824U CN201120245682U CN202152352U CN 202152352 U CN202152352 U CN 202152352U CN 2011202456824 U CN2011202456824 U CN 2011202456824U CN 201120245682 U CN201120245682 U CN 201120245682U CN 202152352 U CN202152352 U CN 202152352U
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- China
- Prior art keywords
- blast furnace
- tube
- coal
- pipe
- double
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- Expired - Fee Related
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Abstract
The utility model relates to a coal injection gun of a blast furnace. The coal injection gun comprises a gun valve joint, a connecting sleeve, an intake tube and an ignition tube, wherein the connecting sleeve is a double-screw tube, the gun valve joint is fixedly located at one end of the double-screw tube through a locating device, and the other end of the double-screw tube is connected with one end of the intake tube; and the other end of the intake tube is welded seamlessly with the ignition tube. The utility model has the advantages that: 1, the length of the double-screw tube is prolonged, therefore, a supporting function is exerted, and the deformation of the coal injection gun is prevented; 2, the installation and the detachment are convenient due to the utilization of the double-screw tube; 3, the ignition tube is totally arranged in a direct injection tube of an air supply device under the condition of not injecting coal so that the burning loss of the ignition tube is avoided; 4, the coal injection gun does not need to be replaced in a blowing-down state, therefore, the regular production of the blast furnace is ensured, the downtime percentage of the blast furnace is reduced, and the economic benefit is improved; and 5, the coal injection gun of the blast furnace has a simple structure and is convenient to use.
Description
Technical field
The utility model relates to a kind of blast furnace metallurgy and uses device, relates in particular to a kind of coal powder lance for blast furnace.
Background technology
In smelting,, adopt blast furnace PCI technology more, just coal dust is at a low price injected in the stove coke for replacing burning through the coal rifle that is inserted in the air port for reducing the consumption of high price coke.Furnace coal spraying technology is the present production technique that adopted of domestic and international most of blast furnace, is that maximum amplitude reduces the ironmaking production cost, improves one of the most effective means of productivity effect.The technology of pulverized coal injection divides pulverized coal preparation and coal dust to carry, and by coal spouting gun coal dust is sent into blast-furnace roasting at last.Because coal spouting gun bears washing away of high temperature, high pressure and coal dust for a long time,, need periodic replacement so the life-span is extremely short.Coal spouting gun commonly used is when changing, and very trouble need be accomplished under the blast furnace staying state, has influenced the ordinary production of blast furnace.The coal powder lance for blast furnace that Hubei Province steel 5# blast furnace adopts is to insert on the holster pipe at belly pipe to design ball valve, and the locking latches that coal spouting gun is inserted into behind the position is a set nut, and coal rifle air inlet pipe range 2200mm, the front end of inlet pipe have the ignitron of long 700 mm.Problem and shortcoming that this technology exists have: when 1, needing to change coal spouting gun, can only under the blast furnace staying state, carry out, influence the ordinary production of blast furnace; 2, the adjustment set nut is absolutely unsafe under high pressure conditions, often causes and stops slow wind; 3, because ignitron is longer, in use cause the scaling loss of ignitron easily.Therefore, we press for a kind of coal spouting gun that does not influence the blast furnace ordinary production when changing easily and changing.
Summary of the invention
The utility model technical problem to be solved provides a kind of coal powder lance for blast furnace, and this coal rifle is changed easily, and when changing, does not influence the ordinary production of blast furnace.
The technical scheme that the utility model adopted is: a kind of coal powder lance for blast furnace; Include rifle valve union, sleeved, inlet pipe and ignitron; Described sleeved is the two start screw pipe; One end of two start screw pipe and rifle valve union are through the locating device positioning and fixing, and the other end of two start screw pipe is connected with an end of inlet pipe; The other end and the ignitron of inlet pipe do not have seam welding.
Press such scheme, described locating device comprises screw mandrel and bolt, and bolt is fixed by nut after passing two start screw pipe and rifle valve union; Described two start screw pipe is provided with a hole, and the position in this hole is corresponding with the through hole on the bolt; Screw mandrel is fixed by nut after passing the silk hole and the through hole on the bolt on the two start screw pipe.
Press such scheme, described two start screw pipe range 450mm.
Press such scheme, scribble refractory materials in the described ignitron.
Press such scheme, described igniting pipe range 400mm.
The beneficial effect of the utility model is: 1, increased the length of two start screw pipe, played supporting role, prevented the distortion of coal spouting gun.2, adopt the two start screw pipe, made things convenient for installation and removal.3, under the situation of not coal powder injection, ignitron is placed fully in the belly pipe of air-supply arrangement, avoided the scaling loss of ignitron.4, need not under the damping down state, coal spouting gun to be changed, guaranteed the ordinary production of blast furnace, reduced the blast furnace staying rate, improved economic benefit.5, the utility model is simple in structure, easy to use.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the structural representation of locating device.
Embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, a kind of coal powder lance for blast furnace, including long 450mm is two start screw pipe 4, and an end of two start screw pipe 4 and rifle valve union 1 are through the locating device positioning and fixing, and the other end of two start screw pipe 4 is connected with an end of inlet pipe 5; The other end of inlet pipe 5 is the ignitron 6 no seam welding of 400mm with long, scribbles high temperature resistant, fireproof pottery in the described ignitron; Described ball valve 7 places on the two start screw pipe 4.Described locating device comprises screw mandrel 3 and 3 ф 10mm bolts 8, and is after bolt 8 passes two start screw pipe 4 and rifle valve union 1, fixing by nut 2; Described two start screw pipe 4 is provided with a hole 9, and the position in this hole 9 is corresponding with the through hole on the bolt 8; Screw mandrel 9 is fixed by nut after passing the silk hole 9 and the through hole on the bolt 8 on the two start screw pipe 4.
Under the situation of not coal powder injection, ignitron 6 is placed fully in the belly pipe of air-supply arrangement, in order to avoid scaling loss.
The utility model adopts the two start screw pipe, and coal spouting gun has been played supporting role, avoids the rifle body to deform; The locating device that employing is made up of screw mandrel and screw rod had both prevented the shake of coal spouting gun, had avoided coal spouting gun to be blown out by high pressure gas again.
The unloading of coal spouting gun: the rifle valve cuts out, then screw mandrel is extracted out, bolt and ball valve are unloaded down; Inlet pipe is screwed down, just accomplished the unloading of coal spouting gun.The installation of coal spouting gun: inlet pipe and two start screw pipe are tightened, then bolt, screw mandrel are all connected, just accomplished the installation of coal spouting gun.During use, only need opened the rifle valve and get final product.
The above; Only being the preferred embodiment of the utility model, is not that the utility model is done any pro forma restriction, and those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification; Equivalent variations or modification all drop in the protection domain of the utility model.
Claims (5)
1. coal powder lance for blast furnace; Include rifle valve union, sleeved, inlet pipe and ignitron; It is characterized in that: described sleeved is the two start screw pipe; One end of two start screw pipe and rifle valve union are through the locating device positioning and fixing, and the other end of two start screw pipe is connected with an end of inlet pipe; The other end and the ignitron of inlet pipe do not have seam welding.
2. coal powder lance for blast furnace as claimed in claim 1 is characterized in that: described locating device comprises screw mandrel and bolt, and bolt is fixed by nut after passing two start screw pipe and rifle valve union; Described two start screw pipe is provided with a hole, and the position in this hole is corresponding with the through hole on the bolt; Screw mandrel is fixed by nut after passing the silk hole and the through hole on the bolt on the two start screw pipe.
3. according to claim 1 or claim 2 coal powder lance for blast furnace is characterized in that: described two start screw pipe range 450mm.
4. coal powder lance for blast furnace as claimed in claim 1 is characterized in that: scribble refractory materials in the described ignitron.
5. like claim 1 or 4 described coal powder lance for blast furnace, it is characterized in that: described igniting pipe range 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202456824U CN202152352U (en) | 2011-07-13 | 2011-07-13 | Coal injection gun of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202456824U CN202152352U (en) | 2011-07-13 | 2011-07-13 | Coal injection gun of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152352U true CN202152352U (en) | 2012-02-29 |
Family
ID=45692855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202456824U Expired - Fee Related CN202152352U (en) | 2011-07-13 | 2011-07-13 | Coal injection gun of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152352U (en) |
-
2011
- 2011-07-13 CN CN2011202456824U patent/CN202152352U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20180713 |