CN202465757U - Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove - Google Patents
Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove Download PDFInfo
- Publication number
- CN202465757U CN202465757U CN2012200699224U CN201220069922U CN202465757U CN 202465757 U CN202465757 U CN 202465757U CN 2012200699224 U CN2012200699224 U CN 2012200699224U CN 201220069922 U CN201220069922 U CN 201220069922U CN 202465757 U CN202465757 U CN 202465757U
- Authority
- CN
- China
- Prior art keywords
- valve
- wind
- cold
- air duct
- explosion
- 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 - Lifetime
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses an airtight temper-explosion-resisting device of a mixed air valve of a hot-blast stove, belonging to the technical field of smelting. The airtight temper-explosion-resisting device comprises a hot-air duct, a cold-air duct, the mixed air valve and a mixed air regulating valve, and further comprises an air pressure pipe, wherein one end of the air pressure pipe is connected with the cold-air duct between the mixed air valve and the mixed air regulating valve, the other end of the air pressure pipe is connected with an industrial nitrogen source, and a valve is arranged on the air pressure pipe. The airtight temper-explosion-resisting device disclosed by the utility model is improved by utilizing a simple technique so as to prevent an explosion accident generated by a backward-flow operation of coal gas under emergency conditions and guarantee the production safety.
Description
Technical field
The utility model relates to a kind of blast funnace hot blast stove safety operation device.
Background technology
The phenomenon that failover, power failure etc. are former thereby generation is shut down suddenly can appear in the cold wind blower fan in the blast furnace production process; Suddenly very easily producing blast furnace gas after having a power failure pours in down a chimney along hot air duct; Mixer selector valve belongs to the sealing of depended on pressure single face, and cold blast engine is shut down back cold air duct internal pressure reduction mixer selector valve and lost sealing function, and coal gas is poured in down a chimney in cold air duct; Coal gas, air mixed reach certain proportion and produce the explosion hazard of catching fire, and this type of accident once repeatedly took place at steel industry.
The utility model content
The technical problem that the utility model will solve provides a kind of hotblast stove mixer selector valve air seal anti-backfire explosive release, and it can close mixer selector valve in the state of accident in time, apace, prevents the cold air duct blast.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is: it comprises heating duct, cold-air duct, mixer selector valve and mixed wind variable valve; It also comprises wind-pressure tube in addition; One end of wind-pressure tube is connected on the cold-air duct between mixer selector valve and the mixed wind variable valve, and the other end is connected with the industrial nitrogen source of the gas, and valve is installed on wind-pressure tube.
The utility model further improves and is: wind-pressure tube is provided with decompression venting valve; The junction of wind-pressure tube and cold-air duct and mixer selector valve are in 1m; Valve is a ball valve.
Adopt the beneficial effect that technique scheme produced to be: this device adopts simple process modification, nitrogen pressure is introduced cold-air duct in the state of accident, and mixer selector valve is closed apace; Prevented to pour in down a chimney the explosion hazard that produces because of coal gas; Because the junction of wind-pressure tube and cold-air duct is very near apart from mixer selector valve, nitrogen has diluted the oxygen level in cold-air duct exit to a certain extent, has played the effect of nitrogen envelope simultaneously; Wind-pressure tube is provided with decompression venting valve; Prevented too high and the infringement to cold-air duct and other equipment that possibly cause, thereby further improved SF, ensured production safety owing to the nitrogen bleed pressure.
Description of drawings
Fig. 1 is the structural representation of the utility model.
In the accompanying drawings: 1, heating duct; 2, mixer selector valve; 3, cold-air duct; 4, mix the wind variable valve; 5, industrial nitrogen source of the gas; 6, valve; 7, wind-pressure tube; 8, decompression venting valve.
Embodiment
It comprises heating duct 1, cold-air duct 3, mixer selector valve 2 and mixed wind variable valve 4; It also comprises wind-pressure tube 7 in addition; One end of wind-pressure tube 7 is connected on the cold-air duct 3 between mixer selector valve 2 and the mixed wind variable valve 4, and the other end is connected with industrial nitrogen source of the gas 5, and valve 6 is installed on wind-pressure tube 7; Wind-pressure tube 7 is provided with decompression venting valve 8; The junction of wind-pressure tube 7 and cold-air duct 3 and mixer selector valve 2 are in 1m; Valve 6 is a ball valve.
Method of use:
When the former thereby phenomenon that takes place to shut down suddenly such as failover, power failure appears in cold wind blower fan in the blast furnace production process; Close mixer selector valve immediately and mix the wind variable valve;, open the valve on the wind-pressure tube then, industrial nitrogen can charge into cold air duct; Because the junction of wind-pressure tube and cold air duct is very near apart from mixer selector valve, nitrogen has played the effect of nitrogen envelope in the cold air duct exit; Nitrogen pressure can make the cold air duct internal pressure raise simultaneously, and it is tight to impel mixer selector valve under single pressure effect, to close, and plays to prevent that blast furnace gas from pouring in down a chimney the effect into cold-air duct along heating duct through mixer selector valve, to prevent the generation of cold air duct explosion hazard.
Claims (4)
1. hotblast stove mixer selector valve air seal anti-backfire explosive release; Comprise hot air duct (1), cold-air duct (3), mixer selector valve (2) and mixed wind variable valve (4); It is characterized in that: it also comprises wind-pressure tube (7); One end of said wind-pressure tube (7) is connected on the cold-air duct (3) between mixer selector valve (2) and the mixed wind variable valve (4), and the other end is connected with industrial nitrogen source of the gas (5), and valve (6) is installed on said wind-pressure tube (7).
2. a kind of hotblast stove mixer selector valve air seal anti-backfire explosive release according to claim 1 is characterized in that said wind-pressure tube (7) is provided with decompression venting valve (8).
3. a kind of hotblast stove mixer selector valve air seal anti-backfire explosive release according to claim 2, the junction that it is characterized in that said wind-pressure tube (7) and cold-air duct (3) and mixer selector valve (2) are apart in the 1m.
4. a kind of hotblast stove mixer selector valve air seal anti-backfire explosive release according to claim 3 is characterized in that said valve (6) is a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200699224U CN202465757U (en) | 2012-02-29 | 2012-02-29 | Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200699224U CN202465757U (en) | 2012-02-29 | 2012-02-29 | Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202465757U true CN202465757U (en) | 2012-10-03 |
Family
ID=46913935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200699224U Expired - Lifetime CN202465757U (en) | 2012-02-29 | 2012-02-29 | Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202465757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089300A (en) * | 2014-07-09 | 2014-10-08 | 江苏永钢集团有限公司 | Safety control method for preventing tempering explosion of gas boiler |
| CN111206132A (en) * | 2020-03-04 | 2020-05-29 | 宝钢湛江钢铁有限公司 | Method for optimally and intensively blowing air in parallel for hot blast stove |
-
2012
- 2012-02-29 CN CN2012200699224U patent/CN202465757U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089300A (en) * | 2014-07-09 | 2014-10-08 | 江苏永钢集团有限公司 | Safety control method for preventing tempering explosion of gas boiler |
| CN111206132A (en) * | 2020-03-04 | 2020-05-29 | 宝钢湛江钢铁有限公司 | Method for optimally and intensively blowing air in parallel for hot blast stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203728859U (en) | Oxygen supply device arranged in front of blast furnace blower | |
| CN202465757U (en) | Airtight temper-explosion-resisting device of mixed air valve of hot-blast stove | |
| CN203112858U (en) | Bleeding oxygen reutilization device in metallurgical production | |
| CN205223319U (en) | Dual -purpose calcination technology simulation experiment device of pellet | |
| CN102994677A (en) | System and method for power generation utilizing waste heat of tail waste gas of blast-furnace hot blast stove | |
| CN108707713A (en) | A kind of hot-blast stove attemperator and method | |
| CN203396230U (en) | Dual chamber furnace | |
| CN202322884U (en) | Water supply system | |
| CN104132554A (en) | Energy saving device for cyclic utilization of smoke of open smoke hood type silicon submerged arc furnace | |
| CN101608869A (en) | A kind of electrode baking forced cooling method and device | |
| CN203639480U (en) | Blast furnace blast system | |
| CN205782823U (en) | Gas fired-boiler automatic nitrogen-charging protection system | |
| CN201547808U (en) | Gas proportional control device for heating furnace | |
| CN204434658U (en) | A kind of auxiliary flue | |
| CN109517938A (en) | The method for preventing from bessemerizing dry method dust venting of dust explosion after interrupting | |
| CN207065622U (en) | A kind of gas fired-boiler explosion-protection equipment | |
| CN204198777U (en) | Preheating oven Anti-freezing gas line structure | |
| CN202522088U (en) | Furnace cooling device | |
| CN204690031U (en) | A kind of converter steelmaking electrostatic precipitation system | |
| CN202139250U (en) | Quenching air device for tunnel kiln | |
| CN203175331U (en) | Ground coal hot air furnace smoke and fire prevention door for coal mine intake shaft | |
| CN203559066U (en) | Blow-in taphole structure of blast furnace | |
| CN204311076U (en) | A kind of top combustion stove settling chamber blow device | |
| CN204486006U (en) | A kind of slag micropowder system hypothermia tail gas waste heat utilizing device | |
| CN203360478U (en) | Connecting device for exhaust pipeline and fume pipeline of hot blast stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |