CN202090032U - Slab heating furnace - Google Patents
Slab heating furnace Download PDFInfo
- Publication number
- CN202090032U CN202090032U CN2011201791204U CN201120179120U CN202090032U CN 202090032 U CN202090032 U CN 202090032U CN 2011201791204 U CN2011201791204 U CN 2011201791204U CN 201120179120 U CN201120179120 U CN 201120179120U CN 202090032 U CN202090032 U CN 202090032U
- Authority
- CN
- China
- Prior art keywords
- gas
- valve
- air
- tube
- pipe
- 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
- Feeding And Controlling Fuel (AREA)
Abstract
The utility model relates to a slab heating furnace which comprises a gas pipe and an air pipe, wherein a first gas regulating cutoff valve is arranged on the gas pipe; a first air regulating valve is arranged on the air pipe; the gas pipe is provided with a gas branch pipe; the air pipe is provided with an air branch pipe; the gas branch pipe is connected with the air branch pipe through a pipeline and a burner; a second gas cutoff valve is arranged on the gas branch pipe; and a second air regulating valve is arranged on the air branch pipe. The slab heating furnace can adapt to the changing heating load.
Description
Technical field
The utility model relates to the slab technical field of heating, particularly relates to a kind of bar plate heating stove.
Background technology
Existing large-scale step type bar plate heating stove layout is generally preheating section, first heating zone, second heating zone, soaking zone, the process furnace that has is provided with burner at preheating section, and what have is not provided with burner, wherein, each heating zone is divided into upper segment and lower section again, and like this, the independent burning zone of controlling is generally 6 or 8 on every stove.Each burning zone is controlled with a gas regulator and an air control valve unification, closed gas regulator, whole section burner Close All is arranged as in upper segment on the Large-scale Heater of flat flame burner, the flat flame burner quantity of each section is more, is generally 20～30.
More than arrange based on following some reason:
1, take all to adopt flat flame burner in last heating zone, promptly realize the total radiation furnace roof, advantage is the heat transfer efficiency height, and furnace cavity is little, the furnace roof simple shape, and furnace pressure distributes steadily on the furnace superintendent;
2, along with world energy sources anxiety, national energy-saving and emission-reduction dynamics are strengthened, many Steel Plant all begin to attempt or implement hot charging slab (HCR) in a large number or directly adorn slab (DHCR), and the state-of-the-art straight dress rate of present domestic slab hot rolling mill reaches more than 50%.
3, in conjunction with the characteristics of flat flame burner and the mode of production of directly-heated dress, bring to production operation, the difficulty of frequent switch burner under High Temperature Furnaces Heating Apparatus apical ring border, otherwise can not adapt to the production that directly-heated is adorned.Because it is inevitable that the cold charge slab is gone into stove, must cause cold charge, hot charging and directly pretend intersecting mutually, the while also deposits, and like this heat load adjustment of process furnace has been brought difficulty.
Below be the example explanation with the normal reheating furnace that 6 heating zones are arranged, after a large amount of hot slabs are gone into stove, the thermal load of first heating zone obviously reduces, need reduce the supply or the manual operation closed portion burner of this section coal gas amount this moment by gas regulator, there are two problems like this, the one, what the gas regulator aperture can not be unlimited is little, too small aperture can cause gas line tempering even blast on the one hand, on the other hand, the flow characteristic of valve has determined that the flow indicating value is too little or approaching zero when little aperture, automatic burning steel control has been caused difficulty, the 2nd, the manual-lock burner is subjected to the restriction of operator's number and the influence of labor condition, it is less that the process furnace of automatization control is provided with personnel, and rhythm of production and to go into the conversion of stove board briquette fast, needs constantly to adjust, summer, the furnace roof envrionment temperature was more than 50 ℃, if 3 process furnace are arranged, need manual-lock or open at least 60 burners, labor condition is more abominable.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of bar plate heating stove, to adapt to the thermal load of continuous variation.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of bar plate heating stove is provided, comprises gas pipe and blast main, described gas pipe is provided with first coal gas and regulates trip valve; Described blast main is provided with first air control valve; Described gas pipe is provided with branch gas tube; Described blast main is provided with the air arm; Described branch gas tube links to each other with burner by pipeline with the air arm, and described branch gas tube is provided with second gas stop valve; Described air arm is provided with second air control valve.
Be provided with nitrogen tube behind described second gas stop valve; Described nitrogen tube is provided with magnetic valve.
Described magnetic valve both sides respectively are provided with a manual valve; Described magnetic valve two ends also are parallel with by-pass valve.
Beneficial effect
Owing to adopted above-mentioned technical scheme, the utility model compared with prior art has following advantage and positively effect:
One, simple in structure, reliable: only by installing a gas stop valve additional, the burning input that an air control valve, nitrogen magnetic valve can be realized the first heating zone top part burner with withdraw from.Two positions are only opened and closed to gas stop valve, less demanding to valve opening.
Two, reduce labour intensity: this type of furnace has realized that several row's flat flame burners control automatically, and a large amount of cold drawing bases or hot slab need not manually burner to be adjusted when going into stove, have reduced labor intensity of operating personnel, have improved labor condition.
Three, adaptability is good: this type of furnace is gone into stove and complete hot base to complete cold base and is gone into stove good adaptability is all arranged, according to the Push And Release of first heating zone gas flow control number row burner.
Four, save coal gas: after a large amount of hot slabs were gone into stove, system can adjust the coal gas amount according to practical situation automatically, to save coal gas, certain benefit cuts down the consumption of energy.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is each valve logic control program skeleton diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment of the present utility model relates to a kind of bar plate heating stove, below with the first heating zone top have 5 row's flat flame burners, will be preceding 3 to arrange burners be that example describes as the process furnace of arm.As shown in Figure 1, comprise gas pipe and blast main, described gas pipe is provided with first coal gas and regulates trip valve 4; Described blast main is provided with first air control valve 5; Described gas pipe is provided with branch gas tube 8; Described blast main is provided with air arm 9; Described branch gas tube 8 links to each other with burner by pipeline with air arm 9, and described branch gas tube 8 is provided with second gas stop valve 1; Described air arm 9 is provided with second air control valve 2.Be provided with nitrogen tube 10 behind described second gas stop valve 1; Described nitrogen tube 10 is provided with magnetic valve 3, opens magnetic valve 3 behind gas cutting, and nitrogen tube 10 charges into nitrogen in gas pipe, purge, and prevents back draft.Described magnetic valve 3 both sides respectively are provided with a manual valve 6; Described magnetic valve 3 two ends also are parallel with by-pass valve 7.When the first heating zone top gas flow is lower than 2000m
3During/h, second gas stop valve 1 is closed automatically, and the magnetic valve 3 on the nitrogen tube is opened automatically, and the aperture of second air control valve 2 is closed to 30%, and preceding 3 row's burners are closed.Behind the nitrogen purging 15 minutes, the magnetic valve 3 on the nitrogen tube cuts out automatically.When the first heating zone top gas flow greater than 3000m
3During/h, second gas stop valve 1 is opened automatically, and the aperture of second air control valve 2 is opened to 100%, and the magnetic valve 3 of nitrogen tube keeps original position (promptly cutting out), and preceding 3 row's burners are come into operation.
First has to be provided with separately on section (be called for short " first heating zone ") branch gas tube of outside heat supply one second air control valve is set on one second gas stop valve and the air arm the utility model from going into the furnace side at every stove.Second gas stop valve on the branch gas tube is regulated the downstream of trip valve at original first coal gas of first heating zone.The first trip valve Flow-rate adjustment of first heating zone can exert an influence to the flow in the branch gas tube, and first coal gas adjusting trip valve of first heating zone cuts off, cuts out in the branch gas tube of back and no longer includes coal gas.Second gas stop valve on the branch gas tube is according to the opening value of a unlatching of the flow set in the house steward and a pass valve; the first heating zone flow is higher than certain value back explanation needs the coal gas amount bigger; second gas stop valve on the branch gas tube is opened automatically at this moment; otherwise; house steward's flow is lower than certain value back explanation needs the coal gas amount less; second gas stop valve on the branch gas tube is closed automatically; the second artificial atmosphere valve opening on the air arm is closed to the aperture of setting; guaranteeing has certain air flowing in the burner, the protection burner.When the first heating zone gas flow increase to setting open threshold values after, second gas valve on the branch gas tube and second air control valve on the air arm are opened simultaneously automatically, pent this part burner drops into burning again.After the second branch gas tube valve on the branch gas tube cut off, the magnetic valve on the nitrogen tube was opened automatically, charges into nitrogen in gas line, directly the gas in the pipeline is blown in the burner hearth, prevent back draft, after reaching the purge time of setting, the magnetic valve on the nitrogen tube cuts out automatically.The front and back of nitrogen magnetic valve are provided with manual valve, and by-pass valve is set, and are convenient to magnetic valve is overhauled, changes.The steering logic program of each valve of the present utility model as shown in Figure 2.
Claims (3)
1. a bar plate heating stove comprises gas pipe and blast main, and described gas pipe is provided with first coal gas and regulates trip valve (4); Described blast main is provided with first air control valve (5); Described gas pipe is provided with branch gas tube (8); Described blast main is provided with air arm (9); Described branch gas tube (8) links to each other with burner by pipeline with air arm (9), it is characterized in that, described branch gas tube (8) is provided with second gas stop valve (1); Described air arm (9) is provided with second air control valve (2).
2. bar plate heating stove according to claim 1 is characterized in that, is provided with nitrogen tube (10) behind described second gas stop valve (1); Described nitrogen tube (10) is provided with magnetic valve (3).
3. bar plate heating stove according to claim 2 is characterized in that, described magnetic valve (3) both sides respectively are provided with a manual valve (6); Described magnetic valve (3) two ends also are parallel with by-pass valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201791204U CN202090032U (en) | 2011-05-31 | 2011-05-31 | Slab heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201791204U CN202090032U (en) | 2011-05-31 | 2011-05-31 | Slab heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090032U true CN202090032U (en) | 2011-12-28 |
Family
ID=45365113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201791204U Expired - Fee Related CN202090032U (en) | 2011-05-31 | 2011-05-31 | Slab heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132021A (en) * | 2019-05-07 | 2019-08-16 | 南京钢铁股份有限公司 | A kind of heating furnace enters furnace plate base blind area removing method |
-
2011
- 2011-05-31 CN CN2011201791204U patent/CN202090032U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132021A (en) * | 2019-05-07 | 2019-08-16 | 南京钢铁股份有限公司 | A kind of heating furnace enters furnace plate base blind area removing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101561224B (en) | Method for controlling combustion atmosphere in large-scale walking beam type plate blank heating furnace | |
| CN102242249A (en) | Heating device for improving heating quality of steel billets and using method thereof | |
| CN106440811B (en) | A kind of sintering ignition device and ignition method | |
| CN203007350U (en) | Oxygen-enriched-air heat-accumulating walking-beam heating furnace | |
| WO2019042155A1 (en) | Plasma heating-based temperature regulation method and device for blast furnace hot air system | |
| CN104232823B (en) | Hotblast stove level pressure changes stove control method | |
| CN101929736B (en) | Temperature control method for heating furnace based on heat accumulating type nozzle | |
| CN202090032U (en) | Slab heating furnace | |
| CN101942574B (en) | Pulse-combustion heat accumulating type metal magnesium reduction furnace | |
| CN103725866A (en) | Heat supply system and heat supply method for soaking pit furnace | |
| CN103740380B (en) | A kind of heatingup of coke oven battery technique | |
| CN103525959A (en) | Method for controlling air temperature of blast furnace | |
| CN105238901A (en) | Multipurpose hot blast stove high-temperature preheating system | |
| CN102492827B (en) | Multifunctional continuous heat treatment furnace and heat treatment method | |
| CN205838912U (en) | A kind of coke oven combustion chamber segmentation supply heater | |
| CN202149688U (en) | High-speed burner impulse tunnel furnace | |
| CN103922561A (en) | Energy-saving gas glass melting furnace | |
| CN102560076B (en) | Method for solving heating by one furnace shared by grain-oriented silicon steel and other steel with enriched oxygen | |
| CN102492819B (en) | High temperature continuous heat treatment furnace and method for low temperature tempering or annealing of steel with it | |
| CN201793693U (en) | Pulse combustion heat accumulation type metallic magnesium reducing furnace | |
| CN104988266A (en) | Shared hot-air furnace system for blast furnace and use method thereof | |
| CN205077087U (en) | Hot -blast furnace high temperature preheating system of multipurpose | |
| CN201561647U (en) | Energy-saving high-efficiency combined aluminum melting furnace | |
| CN206051831U (en) | A kind of combustion air feed system of furnace burning producer gas glass melter | |
| CN203513731U (en) | Thermal compensation copper ingot heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20140531 |