CN207646238U - A kind of hot-blast stove air supply line temperature control system - Google Patents
A kind of hot-blast stove air supply line temperature control system Download PDFInfo
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- CN207646238U CN207646238U CN201721424971.4U CN201721424971U CN207646238U CN 207646238 U CN207646238 U CN 207646238U CN 201721424971 U CN201721424971 U CN 201721424971U CN 207646238 U CN207646238 U CN 207646238U
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Abstract
The utility model discloses a kind of hot-blast stove air supply line temperature control systems, belong to technical field of blast furnace metallurgy.It includes hot-blast stove, hot blast manifold, hot-blast main, bustle pipe, mixing wind tube and temperature control mechanism；The hot-blast outlet of the hot-blast stove is connected to hot-blast main by hot blast manifold, and hot-blast main connects bustle pipe；The mixing wind tube is connected on hot blast manifold at the hot-blast outlet of hot-blast stove, is provided with mixed wind regulating valve and mixer selector valve；The temperature control mechanism includes controller and temperature element A, and temperature element A is arranged on hot-blast main close to one end of bustle pipe, temperature element A connection controllers, and controller connection mixes wind regulating valve.The utility model can carry out entire hot air duct temperature dynamic control, and guarantee is sent to the relative stability of the hot wind wind-warm syndrome of blast furnace.
Description
Technical field
The utility model belongs to technical field of blast furnace metallurgy, more specifically to a kind of hot-blast stove air supply line temperature control
System.
Background technology
In the developing history of blast furnace technology, the successful application of hot-blast stove undoubtedly has special status.Blast furnace makes
It is to be risen in terms of saving the limited metallurgical coke of reserves, reduction energy consumption, raising furnace processor, reduction ironmaking cost with hot-air smelting
Important function is arrived；The utilization rate of the energy is also improved simultaneously, reduces CO2 discharges, is had to environmental protection important and positive
It influences.Therefore the continuous temperature for improving hot wind is the Main way of blast funnace hot blast stove technological progress.With technological progress, hot wind
Temperature has reached the level of 1300 DEG C or so of highest.
In actual use, supply hot wind alternately is carried out to blast furnace by multiple hot-blast stoves, and the hot wind that hot-blast stove generates needs
It to be delivered to blast furnace by hot air duct, mixed wind temperature adjustment is carried out in transmission process, ensure the phase into the hot blast temperature of blast furnace
To stabilization.Position on the mixing wind tube road access hot air duct of existing hot-blast stove is whole on the hot-blast main usually before bustle pipe
A hot blast stove system shares a set of mixing wind tube road system.But the operation principle of hot-blast stove is the coal gas that first burns, with the cigarette of generation
The checker brick of gas heat storage room, then cold wind is heated by red-hot checker brick, then hot wind is sent to blast furnace, makes height
Stove obtains high-temperature hot-air；It is changed greatly (from 1280 DEG C at hot-blast stove air-supply initial stage and air-supply latter stage, the hot blast temperature of hot-blast outlet
Left and right is to 1200 DEG C or so).Therefore, before mixed wind temperature adjustment, temperature can also change with hot blast temperature and be changed in hot air duct, from
And cause that piping and equipment vibration frequency are big, fluctuation good fortune degree is big, it is unfavorable for stabilization and the maintenance of piping and equipment, can also reduces pipe
The service life of system and equipment.
The existing research to hot-blast stove in the prior art, such as Chinese Patent Application No. is：201120270794.5 open
Day it is：On 2 22nd, 2012 patent documents, disclose a kind of top burning hot-blast stove layout structure, including more than two heat
Wind furnace group, key are：Each hot-blast stove is connected with the independent wind mixed chamber being vertically arranged, wind mixed chamber by wind mixed chamber's liaison tube
Lower part be connected with hot blast manifold, hot blast manifold is connected to by hot blast main pipe with bustle pipe, and hot blast manifold, hot blast main pipe and
The center line of bustle pipe be sustained height, the liaison tube be equipped with the first telescoping tube, hot blast manifold be equipped with hot-blast valve and
Second telescoping tube.
The wind mixed chamber of said program arranges that high-temperature area is only wind mixed chamber's liaison tube and mixed wind against hot wind furnace body
Therefore room reduces the high-temperature area of hot wind piping, reduce the temperature grade of resistance to material and hot-blast valve at hot blast manifold, stretch
The high-temperature load that the draw is born realizes high-temperature long-life to extend the service life of valve, ensureing the stability of entire hot wind piping
Hot-blast stove create advantage.But the hot wind furnace structure is poor for the ability of regulation and control of temperature, wind mixed chamber enters hot wind
The cold blast rate of branch pipe is difficult to control, and causes the hot blast temperature fluctuation for entering hot blast main pipe and bustle pipe larger；And multiple heat
The switching connecting blown between wind furnace is poor, and piping temperature fluctuation is larger in handoff procedure, is unfavorable for the stabilization of blast fumance
Property.
Invention content
1, it to solve the problems, such as
The utility model provides a kind of hot-blast stove air supply line temperature control system, and its object is to solve mixing due to hot-blast stove
Air quantity be difficult to control and multiple hot-blast stoves between switching connecting it is poor caused by wind pushing temperature fluctuation it is larger, for piping
The problem of service life, stability and maintenance with equipment cause.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of hot-blast stove air supply line temperature control system, including hot-blast stove, hot blast manifold, hot-blast main, bustle pipe, mixed wind
Pipe and temperature control mechanism；The hot-blast outlet of the hot-blast stove is connected to hot-blast main by hot blast manifold, and hot-blast main connects hot wind and encloses
Pipe；The mixing wind tube is connected on hot blast manifold at the hot-blast outlet of hot-blast stove, is provided with mixed wind regulating valve and is mixed
Air-valve；The temperature control mechanism includes controller and temperature element A, and temperature element A is arranged on hot-blast main close to bustle pipe
One end, temperature element A connection controllers, controller connection mixes wind regulating valve.
As a further improvement, the combustion system of the hot-blast stove is top ignition, internal combustion type or external-burning.
As a further improvement, the hot-blast stove is top combustion stove；The hot blast manifold include branch pipe vertical section and
Branch pipe horizontal segment, the hot-blast outlet of hot-blast stove is connected in branch pipe vertical section, and the lower end connecting branch of branch pipe vertical section is horizontal
One end of section, the another of branch pipe horizontal segment are connected to hot-blast main；The mixing wind tube is connect with branch pipe vertical section.
As a further improvement, the hot-blast stove at least there are three, they are connected to heat by individual hot blast manifold
Wind manifold.
As a further improvement, the temperature control mechanism further includes the hot-blast valve being connect with controller and temperature element B；Institute
Hot-blast valve is stated on branch pipe horizontal segment；The temperature element B is set between the hot-blast outlet of hot-blast stove and mixing wind tube
In branch pipe vertical section.
As a further improvement, on the branch pipe vertical section and branch pipe horizontal segment and between two neighboring hot blast manifold
Hot-blast main on be respectively mounted FlexbleJoint.
As a further improvement, damping down pipe is flow backwards in the upper connection close to the position of bustle pipe of the hot-blast main, refluence is stopped
Reverse flow valve is set on air hose.
As a further improvement, the reverse flow valve passes through line connecting controller.
3, advantageous effect
Compared with the prior art, the beneficial effects of the utility model are：
(1) the utility model hot-blast stove air supply line temperature control system, by the way that temperature controlling machine is added in hot-blast stove air-supply structure
Structure carries out dynamic control to entire hot air duct temperature, and guarantee is sent to the relative stability of the hot blast temperature of blast furnace；The system one
Aspect is different from transmission and mixing wind tube is accessed structure of the position on hot air duct on the hot-blast main usually before bustle pipe, and
On the hot blast manifold that mixed will be in charge of at the hot-blast outlet for being connected to hot-blast stove, therefore since hot-blast outlet, the wind-warm syndrome of hot wind i.e. into
The mixed wind of row is adjusted, and wind-warm syndrome variation is small in entire transmission process, and the wind-warm syndrome for effectively preventing fluctuation is total to hot blast manifold and hot wind
The damage of pipe；On the other hand, the temperature element A on the hot-blast main at bustle pipe can be detected in real time will enter blast furnace
Wind-warm syndrome, and temperature signal is passed into controller, the aperture that wind regulating valve is mixed on mixing wind tube is controlled, to which control is passed through cold wind
Amount, such negative feedback structure form so that wind-warm syndrome realizes that dynamic equilibrium is adjusted, and is further ensured that the stability of wind pushing temperature.
(2) the utility model hot-blast stove air supply line temperature control system, when using top combustion stove, due to hot-blast outlet
Height is far above hot-blast main, therefore hot blast manifold uses two-part structure, first uses branch pipe vertical section that will blow and highly adjusts
To with hot-blast main's sustained height, then using branch pipe horizontal segment carry out horizontal position on adjusting.
(3) the utility model hot-blast stove air supply line temperature control system, the switching between multiple hot-blast stoves can pass through temperature control
Mechanism realizes that the temperature element B being located at the hot-blast outlet of hot-blast stove on hot blast manifold detects wind-warm syndrome, and passes to controller,
It when the hot wind wind-warm syndrome that hot-blast stove is sent out is less than set temperature, indicates that this hot-blast stove has been in air-supply latter stage, needs switching another
One hot-blast stove is blown, to meet wind-warm syndrome requirement, at this point, controller is to control the hot-blast valve opening of another hot-blast stove, and
The hot-blast valve of this hot-blast stove is closed in control, is switched fast to realize；The aperture for mixing wind regulating valve is controlled simultaneously, adjusts wind rapidly
Temperature is stabilized to required temperature；Such structure type shortens hot-blast stove switching time, and wind-warm syndrome fluctuation is small, is conducive to improve piping
Service life with equipment and stability ensure that equipment continues efficiently to run.
(4) the utility model hot-blast stove air supply line temperature control system, although the wind-warm syndrome fluctuation of whole system is smaller,
It is that small fluctuation is inevitable, the fluctuation of temperature can cause the dilation of piping, to reduce due to temperature fluctuation pair
Influence, heat of this system in branch pipe vertical section and branch pipe horizontal segment and between two neighboring hot blast manifold caused by system
It has been respectively mounted FlexbleJoint on wind manifold, wind-warm syndrome is effectively prevented to fluctuate the damage caused by piping.
(5) blast furnace is inevitably produced because maintenance, process accident or other reasons need to interrupt in process of production,
Out-of-blast smelting, is also damping down, when blast furnace staying, can remain hot wind in piping, blast-furnace tuyere can remain coal gas, be required for
Discharge in time, not so remaining coal gas may spray from air port and influence construction and the safety of construction personnel；Therefore, this practicality is new
Type hot-blast stove air supply line temperature control system, damping down pipe is flow backwards in setting on hot-blast main, and controls reverse flow valve, control by controller
System flows backwards the break-make of damping down pipe, empties hot wind and coal gas in piping.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model hot-blast stove air supply line temperature control system.
In figure：1, hot-blast stove；2, hot blast manifold；201, branch pipe vertical section；202, branch pipe horizontal segment；3, hot-blast main；4、
Bustle pipe；5, mixing wind tube；501, wind regulating valve is mixed；502, mixer selector valve；6, temperature control mechanism；601, controller；602, thermometric member
Part A；603, hot-blast valve；604, temperature element B；7, FlexbleJoint；8, damping down pipe is flow backwards；801 reverse flow valves.
Specific implementation mode
The utility model is further described below with reference to specific embodiments and the drawings.
Embodiment 1
As shown in Figure 1, a kind of hot-blast stove air supply line temperature control system of the present embodiment, it includes mainly at least three hot-blast stoves
1, hot blast manifold 2, hot-blast main 3, bustle pipe 4, mixing wind tube 5 and temperature control mechanism 6.Wherein, the hot-blast outlet of each hot-blast stove 1
It is connected on hot-blast main 3 by individual hot blast manifold 2, hot-blast main 3 connects bustle pipe 4, is sent out to hot-blast stove 1
Hot wind passes through hot blast manifold 2 successively, hot-blast main 3 reaches bustle pipe 4, is then sent through each blast furnace, provides smelting thermal energy.
To ensure stablizing relatively for the hot wind wind-warm syndrome for being passed through blast furnace, the hot wind wind that hot-blast stove 1 is sent out need to be adjusted by mixing wind
The mixing wind tube 5 of temperature, traditional hot-blast stove 1 accesses the position on hot air duct on the hot-blast main 3 usually before bustle pipe 4,
Entire hot blast stove system shares a set of mixing wind tube 5；But such structure, before mixed wind temperature adjustment, temperature also can be with heat in hot air duct
The temperature change of wind furnace 1 and change, piping and equipment vibration frequency are big, fluctuation good fortune degree is big to causing, and are unfavorable for piping and set
Standby stabilization and maintenance, can also reduce the service life of piping and equipment.To solve the problems, such as this, mixing wind tube 5 connects in the present embodiment
It is connected on hot blast manifold 2 at the hot-blast outlet of hot-blast stove 1, is provided with mixed wind regulating valve 501 and mixer selector valve 502, from
And since hot blast manifold 2, the wind-warm syndrome of hot wind carries out mixed wind and adjusts, and wind-warm syndrome variation is small in entire transmission process, effectively keeps away
Influence of the wind-warm syndrome of fluctuation to hot blast manifold 2 and hot-blast main 3 is exempted from.
What is more important, the present embodiment carry out dynamic regulation using temperature control mechanism 6 to 5 mixed air quantity of mixing wind tube, should
Temperature control mechanism 6 includes controller 601 and temperature element A602；Wherein, temperature element A602, which is arranged on hot-blast main 3, leans on near-thermal
One end of wind bustle pipe 4, temperature element A602 connections controller 601, the connection of controller 601 mix wind regulating valve 501.In mixed wind,
Temperature element A602 detections in real time will enter the hot wind wind-warm syndrome of blast furnace, and temperature signal is passed to controller 601, and control is mixed
The aperture that wind regulating valve 501 is mixed on air hose 5, to which control is passed through the amount of cold wind；Such negative feedback structure form so that wind-warm syndrome is real
Existing dynamic equilibrium is adjusted, and the hot wind wind-warm syndrome into blast furnace fluctuates very little, is further ensured that the stability of wind pushing temperature.Temperature element
The temperature component such as thermocouple can be used in A602, can realize the detection of temperature and the transmission of signal.
The combustion system of hot-blast stove 1 can be designed as top ignition, internal combustion type or external-burning as needed.Wherein, top ignition heat
Wind furnace is presently the most common, obtains unprecedented high wind-warm syndrome by improving dome temperature, compares internal combustion type and external-burning
Hot-blast stove takes up an area less, investment smaller, can obtain higher wind-warm syndrome, therefore also use top combustion stove in the present embodiment.But
The hot-blast outlet of top combustion stove is higher, and there are larger differences in height between hot-blast main 3；It is sent out for hot-blast stove 1
Hot wind can pass through hot-blast main 3 and send to bustle pipe 4 so that blast furnace uses, and in the present embodiment, hot blast manifold 2 includes branch
Pipe vertical section 201 and branch pipe horizontal segment 202, the hot-blast outlet of hot-blast stove 1 is connected in branch pipe vertical section 201, and branch pipe is vertical
One end of the lower end connecting branch horizontal segment 202 of section 201, the another of branch pipe horizontal segment 202 are connected to hot-blast main 3；It is described mixed
Air hose 5 is connect with branch pipe vertical section 201.The two-part structure design of hot blast manifold 2 first uses vertical 201 sections of branch pipe will air-supply
Height be adjusted to 3 sustained height of hot-blast main, then using branch pipe horizontal segment 202 carry out horizontal position on adjusting so that heat
Air-supply is connected between the hot-blast outlet of wind furnace 1 and hot-blast main 3.
In addition, though the wind-warm syndrome fluctuation of whole system is smaller, but small fluctuation is inevitable, temperature
Fluctuation can cause the dilation of piping, and to reduce since temperature fluctuation is influenced caused by system, this system is vertical in branch pipe
It is respectively mounted ripple compensation on hot-blast main 3 in section 201 and branch pipe horizontal segment 202 and between two neighboring hot blast manifold 2
Device 7 effectively prevents wind-warm syndrome from fluctuating the damage caused by piping.
Embodiment 2
Since the operation principle of hot-blast stove 1 is the coal gas that first burns, with the checker brick of the flue gas regenerative chamber of generation, then general
Cold wind is heated by red-hot checker brick, then send hot wind to blast furnace, and blast furnace is made to obtain high-temperature hot-air；In hot-blast stove 1
Air-supply initial stage wind pushing temperature is higher, and latter stage temperature of blowing is relatively low, when wind pushing temperature is difficult to meet blast furnace process temperature requirements,
It needs to carry out the switching that hot-blast stove 1 is blown, cuts off this hot-blast stove 1 and carry out reheating accumulation of heat, subsequently to use, and switch
Continue to blow to another hot-blast stove 1.Traditional 1 switching cycle of hot-blast stove is longer, and in handoff procedure piping wind-warm syndrome wave
It is dynamic larger, it needs just tend towards stability by the regulation and control of long period, leverages production efficiency, improve production cost.
Therefore, a kind of hot-blast stove air supply line temperature control system of the present embodiment advanced optimizes on the basis of implementing 1 and changes
Into.As shown in Figure 1, temperature control mechanism 6 further includes the hot-blast valve 603 being connect with controller 601 and temperature element B604；Wherein,
Hot-blast valve 603 is mounted on branch pipe horizontal segment 202, temperature element B604 be set to the hot-blast outlet of hot-blast stove 1 and mixing wind tube 5 it
Between branch pipe vertical section 201 on.To which the switching between multiple hot-blast stoves 1 can be realized by temperature control mechanism 6, i.e. temperature element
B604 detects wind-warm syndrome at the hot-blast outlet of hot-blast stove 1, and passes to controller 601, when the hot wind wind-warm syndrome that hot-blast stove 1 is sent out is less than
It when set temperature, indicates that this hot-blast stove 1 has been in air-supply latter stage, needs to switch another hot-blast stove 1 and blow, to meet
Wind-warm syndrome requirement at this point, controller 601 is to control the opening of hot-blast valve 603 of another hot-blast stove 1, and controls and closes this hot-blast stove 1
Hot-blast valve 603 is switched fast to realize；While the aperture for mixing wind regulating valve 501 is controlled, rapid adjusting wind-warm syndrome is stabilized to required
Temperature.Such structure type shortens hot-blast stove switching time, and wind-warm syndrome fluctuation is small, is conducive to the service life for improving piping and equipment
And stability, ensure that equipment continues efficiently to run.
In addition, blast furnace is in process of production inevitably because of medium well in maintenance, process accident or other reasons needs
Damping down is also in production, out-of-blast smelting, when blast furnace staying, can remain hot wind in piping, blast-furnace tuyere can remain coal gas, all
It needs to be discharged in time, not so remaining coal gas may spray from air port and influence construction and the safety of construction personnel.Therefore, this reality
Applying example, close to the position of bustle pipe 4, damping down pipe 8 is flow backwards in connection on hot-blast main 3, flows backwards and reverse flow valve is arranged on damping down pipe 8
801, reverse flow valve 801 passes through line connecting controller 601；When carrying out damping down, opening for reverse flow valve 801 is controlled by controller 6
It closes, the break-make of damping down pipe 8 is flow backwards in control, while can also mix wind regulating valve 501 and the keying of hot-blast valve 603 by that can coordinate to control,
Damping down operation is completed, hot wind and coal gas in piping are emptied.
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 (8)
1. a kind of hot-blast stove air supply line temperature control system, including hot-blast stove (1), hot blast manifold (2), hot-blast main (3), hot wind enclose
Manage (4) and mixing wind tube (5)；The hot-blast outlet of the hot-blast stove (1) is connected to hot-blast main (3) by hot blast manifold (2), and hot wind is total
Manage (3) connection bustle pipe (4), it is characterised in that：Further include temperature control mechanism (6)；The mixing wind tube (5) is connected to hot blast manifold
(2) at the hot-blast outlet of hot-blast stove (1), mixed wind regulating valve (501) and mixer selector valve (502) are provided with；The temperature
Control mechanism (6) includes controller (601) and temperature element A (602), and temperature element A (602) settings are leaned on hot-blast main (3)
One end of nearly bustle pipe (4), temperature element A (602) connection controllers (601), controller (601) connection mix wind regulating valve
(501)。
2. a kind of hot-blast stove air supply line temperature control system according to claim 1, it is characterised in that：The hot-blast stove (1)
Combustion system be top ignition, internal combustion type or external-burning.
3. a kind of hot-blast stove air supply line temperature control system according to claim 2, it is characterised in that：The hot-blast stove (1)
For top combustion stove；The hot blast manifold (2) includes branch pipe vertical section (201) and branch pipe horizontal segment (202), branch pipe vertical section
(201) hot-blast outlet of hot-blast stove (1) is connected on, the lower end connecting branch horizontal segment (202) of branch pipe vertical section (201)
One end, the another of branch pipe horizontal segment (202) are connected to hot-blast main (3)；The mixing wind tube (5) connects with branch pipe vertical section (201)
It connects.
4. a kind of hot-blast stove air supply line temperature control system according to claim 3, it is characterised in that：The hot-blast stove
(1) there are three at least, they are connected to hot-blast main (3) by individual hot blast manifold (2).
5. a kind of hot-blast stove air supply line temperature control system according to claim 4, it is characterised in that：The temperature control mechanism
(6) further include the hot-blast valve (603) being connect with controller (601) and temperature element B (604)；Hot-blast valve (603) installation
On branch pipe horizontal segment (202)；The temperature element B (604) be set to the hot-blast outlet of hot-blast stove (1) and mixing wind tube (5) it
Between branch pipe vertical section (201) on.
6. a kind of hot-blast stove air supply line temperature control system according to claim 4 or 5, it is characterised in that：The branch pipe is perpendicular
It is respectively mounted on hot-blast main (3) on straight section (201) and branch pipe horizontal segment (202) and between two neighboring hot blast manifold (2)
FlexbleJoint (7).
7. a kind of hot-blast stove air supply line temperature control system according to claim 1, it is characterised in that：The hot-blast main
(3) close to the position of bustle pipe (4), damping down pipe (8) is flow backwards in connection on, flows backwards setting reverse flow valve (801) on damping down pipe (8).
8. a kind of hot-blast stove air supply line temperature control system according to claim 7, it is characterised in that：The reverse flow valve
(801) pass through line connecting controller (601).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721424971.4U CN207646238U (en) | 2017-10-31 | 2017-10-31 | A kind of hot-blast stove air supply line temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424971.4U CN207646238U (en) | 2017-10-31 | 2017-10-31 | A kind of hot-blast stove air supply line temperature control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628977A (en) * | 2018-10-20 | 2019-12-31 | 广东韶钢松山股份有限公司 | Optimization method for solving problem of insufficient backflow and air draft of blast furnace hot air pipeline |
| 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 |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
-
2017
- 2017-10-31 CN CN201721424971.4U patent/CN207646238U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628977A (en) * | 2018-10-20 | 2019-12-31 | 广东韶钢松山股份有限公司 | Optimization method for solving problem of insufficient backflow and air draft of blast furnace hot air pipeline |
| CN110628977B (en) * | 2018-10-20 | 2021-08-31 | 广东韶钢松山股份有限公司 | Optimization method for solving problem of insufficient backflow and air draft of blast furnace hot air pipeline |
| 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 |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
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