CN201074236Y - Blast furnace blasting branch pipe - Google Patents
Blast furnace blasting branch pipe Download PDFInfo
- Publication number
- CN201074236Y CN201074236Y CNU2007201280541U CN200720128054U CN201074236Y CN 201074236 Y CN201074236 Y CN 201074236Y CN U2007201280541 U CNU2007201280541 U CN U2007201280541U CN 200720128054 U CN200720128054 U CN 200720128054U CN 201074236 Y CN201074236 Y CN 201074236Y
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- pipe
- blast
- blast furnace
- tube
- branch pipe
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Abstract
Provided is a blow pipe of blast furnaces, which aims to resolve the air leakage, blushing and the like of the blow pipe with a structure of cross-garnet butt. The blow pipe comprises a goose tube, a mid-flow tube, an elbow and a belly pipe, wherein the goose tube is provided with fire resistant lining. The blow pipe is characterized in that the fire resistant lining of pipe lines employs the structure at levels, pipe fittings are connected by employing flanges, and a low-temperature compensator is arranged on the mid-flow tube. The low-temperature compensator is a cylindrical metal pipe fitting, wherein fire resistant lining is arranged inside metal pipes which are externally and fixedly connected with an upper round flange, the upper round flange is connected with a lower round flange via bolts, inner edge of the lower round flange is upwards and fixedly connected with outer metal pipes, corrugated pipes are arranged between the two round flange, and soft fireproof material is arranged inside the corrugated pipes. The blow pipe has the function of not only angular compensation, but also axial compensation, thereby no matter how the temperature and pressure change, the fire resistant lining can be protected from damaging through the function of self-regulating and the air leakage, blushing and the like are avoided. So the technical requirement of blast furnace process upon tuyeres is guaranteed, and also the service life of the device is prolonged.
Description
Technical field:
The utility model belongs to blast-furnace tuyere equipment, relates to a kind of blast branch pipe of blast furnace specifically.
Technical background:
Blast branch pipe of blast furnace is the weak link of blast furnace air supply system, thereby it is more to have problems.Blowpipe of the prior art generally all partly is made up of the swan neck that is provided with refractory lining in the pipe, middle siphunculus, elbow and belly pipe etc.The wherein connection between the tube and tube, the blowpipe of the cross-garnet butt structure of generally using all adopts the sphere mode of connection at present.And this mode of connection not only itself just exists the hidden danger of leaking out, and its critical defect is that it can only be done angular compensatory and can not do nose balance, promptly when the blowpipe expanded by heating, can do the angular variation of a little between the pipe fitting, so fine-tuning arm form, thereby avoid the damage of liner; This variation is for the then no help of person of outstanding talent of axial deformation of middle way pipe fitting itself.Yet in high temperature, hyperbaric environment, the axial deformation of middle siphunculus is the principal element that refractory lining is cracked.During reality is produced,, caused therefore just that leaking out appears in blowpipe, rubescent, appearance temperature is crossed high phenomenon just because of the various crackles that occur in the blowpipe liner.So both influenced the technical requirements of blast-furnace smelting, influenced normal and safety in production, also influenced the work-ing life of equipment itself air port.
The utility model content:
Task of the present utility model is: provide a kind of blast branch pipe of blast furnace at the problems referred to above, therefore this blowpipe not only has the angular compensatory function but also has the nose balance function simultaneously, can overcome effectively that existing blowpipe leaks out, rubescent, appearance temperature is crossed high defective.Not only can ensure the technical requirements of blast-furnace smelting, ensure normal and safety in production the air port, but also the work-ing life that can improve equipment self.
Its technical solution is: a kind of blast branch pipe of blast furnace, comprise the pipe fitting-swan neck that is provided with refractory lining in the pipe, middle siphunculus, elbow and belly pipe, it is characterized in that: the refractory lining of pipeline adopts the echelon structure, adopts flange to connect between the pipe fitting, and be provided with the low temp compensating device on middle siphunculus.
Aforesaid low temp compensating device is the cylindrical metal pipe fitting, wherein, tilt to be provided with refractory lining in the metal tube, the outer affixed upper flange plate of metal tube, upper flange plate connects lower flange by bolt, the lower flange inner edge affixed outer metal tube that makes progress, and between upper and lower ring flange, be provided with corrugated tube by upper and lower adapter, corrugated tube and outside be provided with the soft flame-proof lagging material between the metal tube.Such low temp compensating device can be provided with two groups on middle siphunculus.In addition, be provided with vision slit at said elbow rear portion; Below said belly pipe, be provided with the coal powder injection pipe.
Compared with prior art, because the utility model adopts the echelon structure in integrated piping, use flange to connect between the pipe fitting, especially the design of low temp compensating device, by adopting technical measures such as gap and outward corrugated tube between the double layer of metal pipe, not only make integrated piping have the angular compensatory function, but also had the nose balance function simultaneously.So, how temperature, pressure do not change in the pipeline, can guarantee that refractory lining is excellent by the self-regulating function of pipeline integral body, avoid therefrom leaking out, rubescent, appearance temperature crosses high phenomenon and take place.Like this, not only can ensure the technical requirements of blast-furnace smelting, ensure normal and safety in production the air port, but also the work-ing life that can improve equipment self.Facts have proved, the utility model not only good airproof performance, resistance to pressure height, thermotolerance is strong, calorific loss is little, heat preservation energy-saving, and antifatigue number of times height, regulate the displacement function strong, can bear 1400 ℃ of wind-warm syndrome, and comparable existing cross-garnet butt structure blowpipe increases the service life 5-8 doubly, and Installation and Debugging are convenient.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of low temp compensating device.
Embodiment:
As shown in Figure 1, the blast branch pipe of blast furnace that the utility model provides, comprise the pipe fitting-swan neck 1, middle siphunculus 3, elbow 6 and the belly pipe 8 that are provided with refractory lining in the pipe, it is characterized in that: the refractory lining of pipeline is that unit adopts the echelon structure with the pipe fitting, adopt flange 4 to connect between the pipe fitting, and on middle siphunculus 3, be provided with low temp compensating device 2.The low temp compensating device here is provided with two groups.In addition, in order to watch stove internal combustion situation, be provided with vision slit 5 at said elbow 6 rear portions; For the ease of combustion-supporting, below said belly pipe 8, be provided with coal powder injection pipe 7.
As shown in Figure 2, said low temp compensating device is the cylindrical metal pipe fitting, wherein, tilt to be provided with refractory lining 29 in the metal tube 21, the outer affixed upper flange plates 28 of metal tube 21, upper flange plate 28 connects lower flanges 23 by bolt 24, the lower flange 23 inner edges affixed outer metal tube 22 that makes progress, and between upper and lower ring flange, be provided with corrugated tube 26 by upper and lower adapter 25, corrugated tube 26 and outside be provided with soft flame-proof lagging material 27 in the cavity between the metal tube 22.Here said soft flame-proof lagging material 27 is the alumina-silicate ceramic fibre cotton.
By the blast branch pipe of blast furnace of implementing with upper type, its technical parameter: operating pressure 0.45MPa, shell average temperature rising≤300 ℃, 1250～1350 ℃ of use temperatures, 50～100 ℃ of loop expansion pipe corrugated tube temperature, loop expansion pipe nose balance amount≤20mm, 3～6 ° of loop expansion pipe angular compensatory amounts.The utility model is applicable in various large, medium and small type blast-furnace tuyere installings.
Claims (5)
1. blast branch pipe of blast furnace, comprise the pipe fitting-swan neck (1) that is provided with refractory lining in the pipe, middle siphunculus (3), elbow (6) and belly pipe (8), it is characterized in that: the refractory lining of pipeline adopts the echelon structure, adopt flange to connect between the pipe fitting, and on middle siphunculus (3), be provided with low temp compensating device (2).
2. according to the blast branch pipe of blast furnace of claim 1, it is characterized in that: said low temp compensating device (2) is the cylindrical metal pipe fitting, wherein, tilt to be provided with refractory lining (29) in the metal tube (21), the outer affixed upper flange plate (28) of metal tube (21), upper flange plate (28) connects lower flange (23) by bolt (24), lower flange (23) the inner edge affixed outer metal tube (22) that makes progress, and last, pass through last between the lower flange, lower linking tube (25) is provided with corrugated tube (26), corrugated tube (26) and outside be provided with soft flame-proof lagging material (27) between the metal tube (22).
3. according to the blast branch pipe of blast furnace of claim 1, it is characterized in that: said low temp compensating device is provided with two groups.
4. according to the blast branch pipe of blast furnace of claim 1 or 3, it is characterized in that: be provided with vision slit (5) at said elbow (6) rear portion.
5. according to the blast branch pipe of blast furnace of claim 1 or 3, it is characterized in that: be provided with coal powder injection pipe (7) in said belly pipe (8) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201280541U CN201074236Y (en) | 2007-08-06 | 2007-08-06 | Blast furnace blasting branch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201280541U CN201074236Y (en) | 2007-08-06 | 2007-08-06 | Blast furnace blasting branch pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074236Y true CN201074236Y (en) | 2008-06-18 |
Family
ID=39519498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201280541U Expired - Fee Related CN201074236Y (en) | 2007-08-06 | 2007-08-06 | Blast furnace blasting branch pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074236Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914144A (en) * | 2011-08-01 | 2013-02-06 | Sab有限公司 | Blower nozzle elbow |
| CN107130074A (en) * | 2017-05-25 | 2017-09-05 | 唐山金山腾宇科技有限公司 | Energy saving and environment friendly labyrinth type air-supply arrangement |
-
2007
- 2007-08-06 CN CNU2007201280541U patent/CN201074236Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914144A (en) * | 2011-08-01 | 2013-02-06 | Sab有限公司 | Blower nozzle elbow |
| CN102914144B (en) * | 2011-08-01 | 2016-04-27 | Sab有限公司 | Blower nozzle elbow |
| CN107130074A (en) * | 2017-05-25 | 2017-09-05 | 唐山金山腾宇科技有限公司 | Energy saving and environment friendly labyrinth type air-supply arrangement |
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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 |
Granted publication date: 20080618 Termination date: 20150806 |
|
| EXPY | Termination of patent right or utility model |