CN207632830U - A kind of blast furnace control system of list main pipe - Google Patents
A kind of blast furnace control system of list main pipe Download PDFInfo
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- CN207632830U CN207632830U CN201721839261.8U CN201721839261U CN207632830U CN 207632830 U CN207632830 U CN 207632830U CN 201721839261 U CN201721839261 U CN 201721839261U CN 207632830 U CN207632830 U CN 207632830U
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- blast furnace
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Abstract
The utility model discloses a kind of blast furnace control systems of single main pipe, belong to blast furnace air feed field.A kind of blast furnace control system of single main pipe of the utility model, including at least 3 conventional blast furnaces, every conventional blast furnace are connect by wind turbine air duct with a Fans；Each wind turbine air duct leads to branch and is connected in a main pipe, and bypass regulating valve and wind turning valve are arranged on the branch road.The check-valves and blow valve being arranged in wind turbine air duct, and it is provided with measuring cell.The utility model connect the air feed branch of each blast furnace with main pipe, can realize one-to-one, many-to-one wind turbine air feed mechanism, to meet air feed demand when fan trouble.
Description
Technical field
The utility model is related to blast furnace air feed technical fields, more specifically to a kind of blast furnace control of single main pipe
System processed.
Background technology
In smelter, blast furnace blower is the gas compression machinery that required cold wind is smelted to Iron Works supply,
It is referred to as " heart " of blast furnace system.If catastrophic failure or maloperation of the cold wind supplied to blast furnace due to air feed system, and
Sudden and Unpredictability unexpected interruption occurs, the major accident of slag tuyere will be caused, will also be caused to enterprise huge
Big economic loss, and can also make blast furnace major injury itself.What is more, if because fan parking causes blast furnace gas to flow backwards hair
Raw explosion, it will directly threaten the safety of the person and equipment.Therefore, reliable and stable air dispensation system is to ensure that blast furnace is normal, pacifies
Entirely, the premise of steady production.It is unsegregated in stove to about 10~30 seconds after big blast furnace blowing-out in 1080-5000 cubic metres
Molten iron and Slag Blend deposit whole solidifications on twenties air outlets, so as to cause slag tuyere.Form air port
After Slagging, blast furnace must stop production repairing, to employ a large amount of human and material resources and change air port, repairing process takes around more than ten
A hour, per seat height stove since direct economic loss caused by this accident will be at 3,000,000 yuan or more.
Currently, general large iron and steel enterprise has standby fan per the air blower of seat height stove, when fan trouble, can lead to
It crosses standby fan and air feed is continued to blast furnace.Either being connected between the usually ajutage of two seat height stoves, every blast furnace is blown
At least other Fan pipelines are connect pipe with two, to make failure use.When using standby fan, which needs to continue work
Make, otherwise cannot start in time in failure, more waste of energy.And by the way of combination of two connection, when having volume not
Deng larger capacity blast furnace be located in system when, it is difficult to meet its air quantity requirement by this way.
At present there are many avoiding the technical solution of fan trouble, a kind of anti-Slagging of the blast furnace as disclosed in Chinese patent and parallel connection
For wind process (application number：200610043801.1), the setting auxiliary wind path in the main air supply pipeline of each blast furnace blower, master is sent
Air pipe line and auxiliary wind path are simultaneously unified into air duct net, by control system being monitored for wind condition to each blast furnace, adjust in time
Each relevant parameter of rectification campaign machine realizes that the switching and adjustment to major-minor wind path control, realizes that the wind turbine of other blast furnaces is owed for air feed
Amount blast furnace mends wind and is the blast furnace air-supply for fan trouble occur in time.The patent formula needs to utilize standby fan continue working,
Waste mass energy.
Applicant once disclosed a kind of blast furnace air feed system (application number：201520640776.X), including computer,
Ethernet bridge, PLC/DCS controllers, several blast furnace air-supply pipelines and emergent unicom pipeline.A kind of blast furnace that the program is proposed
Air feed system the characteristics of for blast-furnace tuyere pour slag, before the solidification of air port clinker, restores certain for wind pressure to air port,
To overcome stock column resistance in stove, achievees the effect that prevent slag tuyere, good facilitation is played to the continuous stable yields of blast furnace.But
When this mode is for having large blast furnace loaded in system, then air quantity requirement is cannot be satisfied.
Utility model content
1. utility model technical problems to be solved
The purpose of the utility model is to overcome air feed adjusting cannot meet air quantity and want when the fan trouble after in the prior art
The deficiency asked provides a kind of blast furnace control system of single main pipe, wind turbine air duct of the utility model each blast furnace
It is connect with main pipe, can realize one-to-one, many-to-one wind turbine air feed mechanism, to meet air feed need when fan trouble
It asks.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model is：
A kind of blast furnace control system of single main pipe of the utility model, including at least 3 conventional blast furnaces, every routine
Blast furnace is connect by wind turbine air duct with a Fans；Each wind turbine air duct leads to branch air hose and is connected to a mother
Guan Shang, and bypass regulating valve and wind turning valve are set on the branch air hose.
It is further improved as the utility model, the check-valves and blow valve being arranged in the wind turbine air duct, and
It is provided with measuring cell.
It is further improved as the utility model, the wind turbine, check-valves, blow valve, measuring cell, bypass are adjusted
Valve, wind turning valve are electrically connected with system controller.
It is further improved as the utility model, the bypass regulating valve is electronic cut-out butterfly valve, the wind turning valve
Wind turning quickly to open controls butterfly valve.
It is further improved as the utility model, hot-blast stove is provided at the air intake vent of the routine blast furnace.
It is further improved as the utility model, system includes at least 3 conventional blast furnaces and 1 big blast furnace, institute
The volume for stating big blast furnace is more than conventional furnace volume, and difference is 500~2500 cubic metres, and big furnace volume is less than all routines
The sum of furnace volume.
It is further improved as the utility model, the routine blast furnace has 3, when the air feed wind turbine of big blast furnace goes out
After existing failure, the bypass regulating valve and wind turning valve of 3 conventional blast furnace connections are opened by controller, to main pipe air feed, for tieing up
Hold the air feed demand of big blast furnace.
3. advantageous effect
Using technical solution provided by the utility model, compared with prior art, have the advantages that：
(1) the blast furnace control system of a kind of single main pipe of the utility model, the wind turbine air feed of each conventional blast furnace
Guan Junyu main pipes connect, and bypass regulating valve and wind turning valve is used in combination to control, when one of fan trouble, by controlling to adjust,
Other pipelines wind turbine is set to pass through branch air feed where main pipe to failure wind turbine, control program is simpler, relative to what is connected two-by-two
Control mode has the direction-adjustable of bigger, and structure is also simplified, helps to improve the reaction time, reduces air-introduced machine
Failure and the loss generated.
(2) the blast furnace control system of a kind of single main pipe of the utility model, in the connection of wind turbine bypass duct and main pipe
Electronic stop valve and wind turning control butterfly valve are provided on pipeline, electronic stop valve can play adjustment effect, control piper wind-force
Size, and wind turning control valve can open rear venting, so as to adjust the air quantity that each branch is separated according to the wind pressure of branch.
(3) the blast furnace control system of a kind of single main pipe of the utility model, system include at least 3 conventional blast furnaces
With 1 big blast furnace, the volume of big blast furnace is more than the sum of two conventional furnace volumes, and less than the sum of all conventional furnace volumes,
May be difficult to meet its demand, and use this Shen by two big blast furnace air feeds of remaining branch road direction after big blast furnace blower failure
Please in structure, can ensure that each pipeline can work normally by the wind turbine of multiple other pipelines to big blast furnace air feed.
Description of the drawings
Fig. 1 is the structural schematic diagram of the blast furnace control system of single main pipe.
Label declaration in schematic diagram：1, wind turbine；2, check-valves；3, blow valve；4, wind turbine air duct；5, measuring cell；6、
Hot-blast stove；7, conventional blast furnace；8, bypass regulating valve；9, wind turning valve；10, main pipe；11, branch air hose；12, big blast furnace.
Specific implementation mode
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1, a kind of blast furnace control system of single main pipe of the present embodiment, including at least 3 conventional blast furnaces 7,
Every conventional blast furnace 7 is connect by wind turbine air duct 4 with a Fans 1, and non-return is disposed with from wind turbine 1 to conventional blast furnace 7
Valve 2, blow valve 3, measuring cell 5 and hot-blast stove 6, wind turbine 1, check-valves 2, blow valve 3, measuring cell 5, bypass regulating valve 8, wind turning valve
9 are electrically connected with system controller.Check-valves 2 can protect wind turbine 1, blow valve 3 that can control the air quantity of wind turbine air duct 4,
Measuring cell 5 is used for the pressure of detection blower fan air duct 4, and hot-blast stove can preheat air inlet.
Each wind turbine air duct 4 leads to branch air hose 11 in the present embodiment, and each branch air hose 11 is connected to a mother
On pipe 10, and bypass regulating valve 8 and wind turning valve 9 are set on the branch air hose 11, for control wind turbine air duct 4 whether with mother
Pipe 10 is connected to.Bypass regulating valve 8 is electronic cut-out butterfly valve, can adjust the air force in pipeline.Wind turning valve 9 is quickly to open
Wind turning control butterfly valve, the butterfly valve can quick breakdown action, prevent slag tuyere.
Embodiment 2
A kind of blast furnace control system of single main pipe of the present embodiment, basic structure is same as Example 1, different
Place is：The present embodiment system includes at least 3 conventional blast furnaces 7 and 1 big blast furnace 12, and conventional blast furnace 7 can be to wait to hold
Product blast furnace, such as it is all made of 2500 cubic metres of blast furnace.The volume of big blast furnace 12 is more than 7 volume of conventional blast furnace, and less than all
The sum of 7 volume of conventional blast furnace, for example, by using 5000 cubic metres of blast furnaces.
As shown in fig. 1, it is 4# high that conventional blast furnace 7, which has 3, respectively 1# blast furnaces, 2# blast furnaces, 3# blast furnaces, big blast furnace 12,
Stove opens what 37 air-supply pipelines of conventional blast furnace were connected to after the air feed of big blast furnace 12 is broken down with wind turbine 1 by controller
Bypass regulating valve 8 and wind turning valve 9, to 10 air feed of main pipe, the air feed demand for maintaining big blast furnace 12.
In use, specific detection and execution state are：
1. normal condition, controller detect 3 conventional blast furnaces 7 wind turbine 1# wind turbines, 2# wind turbines, 3# wind turbines and its motor or
The operating status of steam turbine to judge the normal and accident condition of working fan, and accordingly executes air-blower control action；
2. the open state of blow valve 3 avoids wind turning control to judge that the Fans are orderly closedown or accidental shutdown
System malfunction；
3. the full-gear of fan outlet check-valves 2 prevents from causing pernicious damage to wind turbine machinery to protection exception wind turbine
It is bad；
4. measuring cell 5 detection normal work when wind turbine blast pressure, have to be larger than certain setting pressure, when more than
When authorized pressure, just allow to execute wind turning control action.
5. other such as bypass regulating valve 8, the open states of wind turning valve 9, in the urgent feelings that a certain Fans break down
Under condition, control command is quickly executed, wind turning valve 9 can completely be opened at 2.5 seconds, and the blast-furnace tuyere for the wind that makes to break because of fan trouble exists
Restore ventilation in 10 seconds rapidly, and maintain certain pressure, prevents blast-furnace tuyere pour slag accident from occurring.
The control process of system wind turning is as follows：
The operating status of controller detection 1#~4# wind turbines, the operating mode of the safe operation of wind turbine, judge working fan just
Often and accident condition, controller detects the open state of blow valve 3, to judge that the Fans are that orderly closedown or accident are stopped
Machine avoids wind turning control malfunction.When a certain fan trouble, such as 2# fan troubles, safe operation protection signal occur, are main
Motor operation signal disappears, and 2# fan outlet check-valves is fully closed, and the wind turning valve of 4 roads of wind turbine air duct of 2# wind turbines will be quick
It opens, the wind turning valve of 4 roads of wind turbine air duct of corresponding 1# or 3# wind turbines will also be opened, and wind turning is realized by wind turning valve 9
Function.
If it is 4# fan troubles, since its required volume of air supply is larger, controller will open 1#~3# wind turbines at this time
Wind turning valve on 4 branch air hose of wind turbine air duct opens simultaneously the wind turning valve of 4 roads of 4# wind turbine wind turbines air duct, 1#~3#
Wind turbine can be by main pipe to 4# blast furnace air feeds.
The wind turbine air duct of multiple wind turbines is connected to main pipe by the utility model, can be realized by a main pipe multiple
Air quantity auxiliary supply between pipeline, is not only able to meet different air quantity demands, and due to only with a main pipe, structure
Simply, reduce intermediate unnecessary logic control link, help to improve the execution speed of action, can effectively avoid air port filling
Slag.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of blast furnace control system of list main pipe, it is characterised in that：Including at least 3 conventional blast furnaces (7), every routine
Blast furnace (7) is connect by wind turbine air duct (4) with a Fans (1)；Each wind turbine air duct (4) leads to branch air hose
(11) it is connected on a main pipe (10), and bypass regulating valve (8) and wind turning valve (9) is set on the branch blast pipe (11).
2. a kind of blast furnace control system of single main pipe according to claim 1, it is characterised in that：The wind turbine air feed
The check-valves (2) and blow valve (3) being arranged on pipe (4), and it is provided with measuring cell (5).
3. a kind of blast furnace control system of single main pipe according to claim 2, it is characterised in that：The wind turbine (1),
Check-valves (2), blow valve (3), measuring cell (5), bypass regulating valve (8), wind turning valve (9) are electrically connected with system controller.
4. a kind of blast furnace control system of single main pipe according to claim 2, it is characterised in that：The bypass is adjusted
Valve (8) is electronic cut-out butterfly valve, and the wind turning valve (9) is the wind turning control butterfly valve quickly opened.
5. a kind of blast furnace control system of single main pipe according to claim 2, it is characterised in that：The routine blast furnace
(7) hot-blast stove (6) is provided at air intake vent.
6. a kind of blast furnace control system of single main pipe according to claim 3, it is characterised in that：System include to
The volume of few 3 conventional blast furnaces (7) and 1 big blast furnace (12), the big blast furnace (12) is more than conventional blast furnace (7) volume, poor
Value is 500~2500 cubic metres, and big blast furnace (12) volume is less than the sum of all conventional blast furnace (7) volumes.
7. a kind of blast furnace control system of single main pipe according to claim 6, it is characterised in that：The routine blast furnace
(7) there are 3, after the air feed of big blast furnace (12) is broken down with wind turbine (1), 3 conventional blast furnaces (7) are opened even by controller
Logical bypass regulating valve (8) and wind turning valve (9), to main pipe (10) air feed, the air feed demand for maintaining big blast furnace (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721839261.8U CN207632830U (en) | 2017-12-26 | 2017-12-26 | A kind of blast furnace control system of list main pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721839261.8U CN207632830U (en) | 2017-12-26 | 2017-12-26 | A kind of blast furnace control system of list main pipe |
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| Publication Number | Publication Date |
|---|---|
| CN207632830U true CN207632830U (en) | 2018-07-20 |
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ID=62852690
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721839261.8U Active CN207632830U (en) | 2017-12-26 | 2017-12-26 | A kind of blast furnace control system of list main pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN207632830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487024A (en) * | 2018-12-25 | 2019-03-19 | 云南玉溪仙福钢铁（集团）有限公司 | Blast furnace gas and main air hose lead to net system |
-
2017
- 2017-12-26 CN CN201721839261.8U patent/CN207632830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487024A (en) * | 2018-12-25 | 2019-03-19 | 云南玉溪仙福钢铁（集团）有限公司 | Blast furnace gas and main air hose lead to net system |
| CN109487024B (en) * | 2018-12-25 | 2024-02-09 | 云南玉溪仙福钢铁（集团）有限公司 | Blast furnace gas and main air pipe net system |
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