CN106119450A - A kind of blast furnace body soft water sealed cooling system and blast furnace cooling means - Google Patents
A kind of blast furnace body soft water sealed cooling system and blast furnace cooling means Download PDFInfo
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- CN106119450A CN106119450A CN201610572908.9A CN201610572908A CN106119450A CN 106119450 A CN106119450 A CN 106119450A CN 201610572908 A CN201610572908 A CN 201610572908A CN 106119450 A CN106119450 A CN 106119450A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
Abstract
The invention discloses a kind of blast furnace body soft water sealed cooling system and blast furnace cooling means, its method includes: S1, for the cooling wall body being in some layer of blast furnace, the water inlet pipe of this layer of cooling wall body is connected with water inlet concentrate tube, outlet pipe is connected with water outlet concentrate tube, water inlet pipe is provided with the first regulation valve, bypass pipe one end connects with water inlet concentrate tube, and the other end connects with water outlet concentrate tube, and bypass pipe is provided with the second regulation valve；S2, the aperture of control the first regulation valve, discharge corresponding cooling water flow conduits in is increased or decreased, to adjust the intensity of cooling in the blast furnace region corresponding to cooling water flow conduits, simultaneously, control the aperture inverse change of the second corresponding regulation valve, to maintain other discharge being not required in the cooling water flow conduits of regulation unaffected.The present invention can regulate by cooling water inflow according to the size automatic control system of body of heater local heat load, ensures that the regulation in this region does not interferes with the flow in other region simultaneously.
Description
Technical field
The present invention relates to a kind of blast-furnace soft water sealed cooling system, particularly relate to a kind of airtight cooling system of blast furnace body soft water
System and blast furnace cooling means.
Background technology
Modern blast furnace body of heater cooling device is predominantly installed on the cooling wall of furnace shell inwall, and cooling wall is divided into along short transverse
Multilamellar (section), every layer (section) is the most uniform by polylith cooling wall, each cooling wall this most internal to be equipped with at least one cold
But water flow passage, water flowing cooling wall body in runner during work, it is used for safeguarding the reasonably structure such as the operation type of furnace and protection furnace shell.Large-scale
The structure of Cooling System for Blast-furnace Shaft is developed into present soft water cooling system by the most old-fashioned industry water open system,
Divide according to the allocation strategy of cooling water and mostly use the constant flux water supply mode connected from bottom to top, be subdivided into a string to top side
Formula, Liang great district way of supplying water, three great Qu way of supplying water.All streams in all cooling devices in these three way of supplying water Dou Shi district
Water flow of pipe is the most identical and can only regulate the flow of main plot and cannot regulate the flow of the different runner of circumference.But these three supplies
All there is significant limitation in water mode: i.e. can not meet the cooling device requirement to the water yield when cooling device high heat load,
The waste of cooling water and excessive heat consumption, superfluous intensity of cooling can be caused again because the water yield is superfluous in the normal production time
Also it is blast furnace knot thickness and the main cause producing the accidents such as accretion；Meanwhile, differing heights, different interval temperature during blast fumance
And slag crust situation is different, required Local cooling requirement of strength is the most different.When blast furnace or time its local producer is cool or knot is thick,
Normal or high intensity excessively cooling only can make the working of a furnace can only adjust the working of a furnace by the adjustment of crude fuel to evil, blast furnace, not only consume
Time longer, and more fuel need to be consumed；Otherwise, when blast furnace or its local furnace condition disorder time, existing cooling device without
Method provides the big yield needed for high heat load, often results in cooling device temperature too high and cause the lost of life or premature breakdown.
For solving the problems referred to above, before the application, propose " regulatable blast furnace cooling system and blast furnace cooling means "
The application for a patent for invention of (Application No. 201310113587.2), it is by each water inlet/outlet pipe of cooling wall bypass in parallel
Pipe also installs automatic regulating valve on bypass pipe, it is intended that by regulating the aperture of the valve on the bypass pipe of certain runner to this runner
Discharge shunt, thus reach to regulate the purpose of the intensity of cooling of this regional area.But, the deficiency that this system exists
Part is: 1, the adjustment of the bypass flow of a certain runner, varying less of the discharge of this runner caused, and can affect institute
There are same layer and the flow of different layers cooling wall runner, cause the instability of whole system；2, the water inlet pipe and water outlet pipe of each runner connects
Connect a bypass pipe, one intensive " pipe cage " can be formed outside furnace shell, make furnace shell, the maintenance of cooling wall water pipe and maintenance become
Obtaining abnormal the most difficult, the practicality of this technology is relatively low.Such as, a conventional blast furnace has 15 layers of (section) cooling wall from the bottom to top, often
Layer (section) has 50 pieces of cooling wall bodies, every piece of cooling wall body to have 4 water channels, have 200 water channels.When being intended to a certain cooling
When the water yield of wall runner is turned down, the bypass valve of this runner is opened greatly, because of the water source of all cooling walls in bottom by same ring
Pipe supplies water, even if so by this bypass standard-sized sheet, the flow of this water channel the most only reduces 1/201, i.e. reduces about 0.5%, it is seen that this is
The maximal regulated ability of system is only 0.5%, can not reach far away the purpose of regulation.And after this bypass valve is opened greatly, impact
The water yield to upper strata (section) and the runner of lower floor's (section) increases, and the flow having influence on other 199 water channels reduces, even accordingly
Cause the disorder of whole system.Additionally in this system, the spacing of the most adjacent two bypass pipes is 278mm, and the external diameter of bypass pipe is at least
For 50mm, between two pipes of " pipe cage ", gap only has 228mm, if it occur that when last furnace shell cracking and drainage, operation people
Member would become hard to enter operation near furnace shell.
Summary of the invention
It is an object of the invention to provide a kind of blast furnace body soft water sealed cooling system and blast furnace cooling means, it can
Size automatic control system regulation according to body of heater local heat load is by cooling water inflow, and regulation efficiency is high, ensures this district simultaneously
The regulation in territory does not interferes with the flow in other region；And, it can also actively regulate blast furnace office according to the needs of blast furnace operating
The intensity of cooling in portion, makes blast furnace Local cooling effect close to optimal, it is achieved the intention of blast furnace operating person, thus prevents blast furnace from occurring
Slag crust is unstable and furnace wall ties the accidents such as thick.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of blast furnace body soft water sealed cooling system, including being arranged at some cooling wall bodies of last furnace shell inwall,
Cooling wall body circumferentially and the most continuously installs multilamellar along blast furnace, and each cooling wall is the most internal to be equipped with at least
Article one, cooling water flow conduits, every cooling water flow conduits two ends connect cooling wall water inlet pipe and outlet pipe, water inlet pipe and outlet pipe respectively
Pass last furnace shell, and be separately installed with the first temperature transducer and the second temperature transducer on water inlet pipe and outlet pipe, water inlet
Pipe or outlet pipe are provided with flow transducer, and cooling wall body is provided with the 3rd temperature transducer, described 3rd temperature transducers
Device gos deep into cooling wall body through furnace shell；
It is provided with the first regulation valve on described water inlet pipe or outlet pipe, is in some or all of cooling walls of blast furnace same layer
Water inlet pipe on body and the one or some water inlet concentrate tube arranged around blast furnace are connected, this water inlet concentrate tube and
Outlet pipe on the cooling wall body of next layer being adjacent is connected；It is in some or all of cooling wall bodies of same layer
On outlet pipe and one around blast furnace arrange water outlet concentrate tube be connected, this water outlet concentrate tube and be adjacent upper
Water inlet pipe on the cooling wall body of a layer is connected；And it is in the water inlet concentrate tube at the cooling wall body of same layer and goes out
It is provided with some bypass pipes between water concentrate tube, described bypass pipe is provided with the second regulation valve；And each flow transducer and survey
The signal output part of temperature sensor and the actuator connection control system respectively of each regulation valve, for controlling each regulation valve
Aperture, thus control the discharge in cooling wall inner cooling water runner and the discharge in bypass pipe respectively；Described second regulation
The aperture of valve and the aperture inverse change of the corresponding first regulation valve, so that discharge in bypass pipe and corresponding
Discharge inverse change in cooling water flow conduits, thus ensure other discharge being not required in the cooling water flow conduits of regulating water flow
Remain unchanged as far as possible.
By technique scheme, described first regulation valve and second regulation valve be electric control valve, pneumatic control valve or
Electro-hydraulic regulation valve.
By technique scheme, described bypass pipe is additionally provided with restricting element.
Accordingly, the present invention also provides for a kind of blast furnace cooling side based on above-mentioned blast furnace body soft water sealed cooling system
Method, comprises the following steps:
S1, for being in the cooling wall body of blast furnace layer, by this layer of some cooling wall or the water inlet pipe of whole cooling walls
Being connected with water inlet concentrate tube, corresponding outlet pipe is connected with water outlet concentrate tube, and water inlet pipe or outlet pipe are provided with first
Regulation valve, one end of some bypass pipes is connected with the water inlet concentrate tube of this layer of water inlet end, its other end and this layer of water side
Water outlet concentrate tube is connected, and bypass pipe is provided with the second regulation valve；
S2, the aperture of control the first regulation valve, be increased or decreased the discharge in corresponding cooling water flow conduits, to adjust cooling
The intensity of cooling in the blast furnace region corresponding to water flow passage, meanwhile, controls the aperture inverse change of the second corresponding regulation valve, with dimension
Hold the discharge in other cooling water flow conduits being not required to regulation unaffected.
By technique scheme, in step S2, need to set water-in and water-out temperature difference △ of cooling water flow conduits according to blast furnace cooling
t0, the actual water-in and water-out temperature difference △ t of monitoring cooling water flow conduits；
As △ t >=△ t0Time, increase the aperture of the first regulation valve corresponding to this cooling water flow conduits, to increase by this cooling
The discharge of water flow passage, meanwhile, reduces the aperture of the second regulation valve on same group of bypass pipe or closes this second regulation valve, reducing
Discharge in bypass pipe, to avoid other cooling water flow conduits is produced impact；
As △ t ＜ △ t0Time, reduce the aperture of the first regulation valve corresponding to this cooling water flow conduits, to reduce by this cooling
The discharge of water flow passage, meanwhile, increases the aperture of the second regulation valve on same group of bypass pipe, increases the discharge in bypass pipe,
The water yield reduced in making this cooling water flow conduits flows to last layer from bypass pipe, to avoid in the cooling water flow conduits to other position
Discharge produces impact.
By technique scheme, described △ t0It it is 0.03～18 DEG C.
By technique scheme, in step S2, need to set temperature t of cooling wall body according to blast furnace cooling0, monitor cold
But actual temperature t of the 3rd temperature transducer of wall body；
As t ＞ t0Time, increase respective regions first and regulate the aperture of valve, to increase the current by this cooling water flow conduits
Amount, meanwhile, reduces the aperture of the second regulation valve on same group of bypass pipe or closes this second regulation valve, reducing the water in bypass pipe
Flow, to avoid the discharge in other position cooling water flow conduits is produced impact；
As t ＜ t0Time, reduce the aperture of corresponding first regulation valve, to reduce the current by this region cooling water flow conduits
Amount, meanwhile, increases the aperture of the second regulation valve on same group of bypass pipe, increases the discharge in bypass pipe, make cooling water flow conduits
The water yield reduced flows to last layer from bypass pipe, to avoid the discharge in the cooling water flow conduits at other position is produced impact.
By technique scheme, described t0It it is 14～650 DEG C.Return difference in the temperature control to be had of this setting sets,
To prevent valve perseveration near set point.
The beneficial effect comprise that: the present invention is by arranging on the water inlet pipe or outlet pipe of each cooling wall body
First regulation valve, according to the size of body of heater local heat load, automatically controls opening of corresponding first regulation valve by control system
Degree, to realize pinpointing to regulate and control by the discharge of certain cooling wall body；Meanwhile, the present invention is arranged with the second regulation valve
Bypass pipe, the effect of this bypass pipe is not for regulating the discharge by cooling wall body, but when by regulation first
When regulating the water yield of a certain runner of valve regulation or some runner, regulate the second regulation valve of corresponding bypass pipe simultaneously, make bypass
The flow of pipe and the discharge inverse change in cooling wall runner, thus ensure other water being not required in the cooling water flow conduits of regulation
Flow remains unchanged.The present invention regulates effectively, can regulate any one region (certain block cooling wall, a few water the most in time
Pipe, certain single water pipe) intensity of cooling, and regulate and do not interfere with the flow in other region, this is blast fumance needs, but
This effect is that any facility and technique did not all reach in the past；And, it actively can also be adjusted according to the needs of blast furnace operating
The intensity of cooling of joint blast furnace local, makes blast furnace Local cooling effect meet the needs of operator, it is achieved the intention of blast furnace operating person,
Thus prevent the accident such as blast furnace generation slag crust instability and furnace wall knot thickness.
And the present invention uses computer automatic control system, it can by control system receive each temperature transducer,
The temperature of flow transducer, data on flows, be analyzed in conjunction with setting value and calculate, it is judged that the thermic load of each measured zone
And slag crust situation, calculate the intensity of cooling needed for this region accordingly, and by being arranged on first on water inlet pipe or outlet pipe
Regulation valve automatic aperture regulation, it is achieved that cooling water flow direct, rapid, effectively regulate and control, and manual regulator control system without
Method completes the regulation and control of substantial amounts of valve fast and accurately, and control accuracy is attached up to a certain bar cooling water flow conduits controlling blast furnace layer
Near field.The present invention has the widest range of accommodation, when needing the intensity of cooling regulating blast furnace or its local, it is possible to directly
Control corresponding regulation valve by control system to realize fast, easily.The present invention has exploitativeness, and its in-site installation takies sky
Between little, bypass pipe quantity can arrange seldom, does not hinder furnace shell and the maintenance of cooling wall water pipe and maintenance, and have enforcement can
Row, pure bypass regulator control system is then the closeest because of field pipes layout, makes last furnace shell and the maintenance of water pipe and maintenance to enter
OK, thus do not possess the possibility of enforcement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is that the embodiment of the present invention 1 uses water inlet pipe fill the partial structurtes of cooling system of the first regulation valve and work former
Reason schematic diagram.
Fig. 2 is that the embodiment of the present invention 2 uses outlet pipe fill the partial structurtes of cooling system of the first regulation valve and work former
Reason schematic diagram.
Fig. 3 is that present system embodiment 1 uses water inlet pipe to fill the partial structurtes of cooling system and the work of the first regulation valve
Make schematic cross-sectional view.
Fig. 4 is that present system embodiment 2 uses outlet pipe to fill the partial structurtes of cooling system and the work of the first regulation valve
Make schematic cross-sectional view.
In figure: 1-flow transducer, 2-cooling water flow conduits, 3-cooling wall body, 4-water inlet pipe, 5-the first temperature transducers
Device, 6-first regulates valve, 7-the second temperature transducer, 8-outlet pipe, 9-bypass pipe, and 10-second regulates valve, 11-restricting element,
12-is intake concentrate tube, 13-water outlet concentrate tube, the water inlet pipe on the cooling wall body of the last layer that 14-is adjacent, 15-the 3rd thermometric
Sensor, the outlet pipe on the cooling wall body of next adjacent for 18-layer, 20-furnace shell.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as Figure 1-Figure 4, a kind of blast furnace body soft water sealed cooling system, bag
Including the some cooling wall bodies 3 being arranged at last furnace shell inwall, cooling wall body 3 is along blast furnace circumferentially and in the height direction
Installing multilamellar continuously, be equipped with at least one cooling water flow conduits 2 in each cooling wall body 3, every cooling water flow conduits 2 two ends are divided
Not Lian Jie cooling wall water inlet pipe 4 and outlet pipe 8, water inlet pipe 4 and outlet pipe 8 pass last furnace shell 20, and water inlet pipe 4 and outlet pipe
It is separately installed with the first temperature transducer 5 on 8 and the second temperature transducer 7, water inlet pipe 4 or outlet pipe 8 are provided with flow sensing
Device 1, cooling wall body 3 is provided with the 3rd temperature transducer 15, and the 3rd temperature transducer 15 gos deep into cooling wall through furnace shell 20
Body 3；
It is provided with the first regulation valve 6 on water inlet pipe 4 or outlet pipe 8, is in some or all of cooling walls of blast furnace same layer
Water inlet pipe 4 on body 3 is connected with the one or some water inlet concentrate tube 12 arranged around blast furnace, and this water inlet is concentrated
Pipe 12 is connected with the outlet pipe 18 on the cooling wall body of next layer being adjacent；It is in the some or all of cold of same layer
But the outlet pipe 8 on wall body 3 is connected with a water outlet concentrate tube 13 arranged around blast furnace, this water outlet concentrate tube 13
It is connected with the water inlet pipe 14 on the cooling wall body of the last layer being adjacent；It is at the cooling wall body 3 of same layer
It is provided with some bypass pipes 9 between water inlet concentrate tube 12 and water outlet concentrate tube 13, bypass pipe 9 is provided with the second regulation valve 10, respectively
The actuator connection control system respectively of flow transducer and the signal output part of temperature transducer and each regulation valve, is used for
Control the aperture of each regulation valve, thus control the discharge in cooling wall inner cooling water runner and the current in bypass pipe 9 respectively
Amount；The aperture of the second regulation valve and the aperture inverse change of the corresponding first regulation valve, so that the discharge in bypass pipe
With the discharge inverse change in corresponding cooling water flow conduits, thus ensure that other is not required to the cooling current of regulating water flow
Discharge in road remains unchanged as far as possible.
In a preferred embodiment of the invention, as Figure 1-Figure 4, the first regulation valve 6 and the second regulation valve 10 are electronic
Regulation valve, pneumatic control valve or electro-hydraulic regulation valve.
In a preferred embodiment of the invention, as Figure 1-Figure 4, bypass pipe 9 is additionally provided with restricting element 11.
A kind of blast furnace cooling means, as Figure 1-Figure 4, comprises the following steps:
S1, for being in the cooling wall body 3 of a certain layer of blast furnace, by this layer of some cooling wall or the water inlet of whole cooling walls
Pipe 4 is connected with water inlet concentrate tube 12, and corresponding outlet pipe 8 is connected with water outlet concentrate tube 13, water inlet pipe 4 or outlet pipe 8
Being provided with the first regulation valve 6, one end of some bypass pipes 9 is connected with the water inlet concentrate tube 12 of this layer of water inlet end, its other end
It is connected with the water outlet concentrate tube 13 of this layer of water side, bypass pipe 9 is provided with the second regulation valve 10；
S2, the aperture of control the first regulation valve 6, be increased or decreased the discharge in corresponding cooling water flow conduits 2, cold to adjust
But the intensity of cooling in the blast furnace region corresponding to water flow passage 2, meanwhile, the aperture controlling the second corresponding regulation valve 10 reversely becomes
Change, to maintain other discharge being not required in the cooling water flow conduits of regulation unaffected.
In a preferred embodiment of the invention, in step S2, according to blast furnace cooling need to set the entering of cooling water flow conduits 2,
Temperature difference of outlet water △ t0, the actual water-in and water-out temperature difference △ t of monitoring cooling water flow conduits 2；
As △ t >=△ t0Time, increase the aperture of the first regulation valve 6 of this cooling water flow conduits 2 correspondence, cold by this to increase
But the discharge of water flow passage 2, meanwhile, reduces the aperture of the second regulation valve 10 on same group of bypass pipe 9 or closes this second regulation
Valve 10, reduces the discharge in bypass pipe 9, to avoid other cooling water flow conduits is produced impact；
As △ t ＜ △ t0Time, reduce the aperture of the first regulation valve 6 of this cooling water flow conduits 2 correspondence, cold by this to reduce
But the discharge of water flow passage 2, meanwhile, increases the aperture of the second regulation valve 10 on same group of bypass pipe 9, increases in bypass pipe 9
Discharge, the water yield reduced in making this cooling water flow conduits 2 flows to last layer from bypass pipe 9, to avoid the cooling to other position
Discharge in water flow passage produces impact.
In a preferred embodiment of the invention, △ t0It it is 0.03～18 DEG C.
In a preferred embodiment of the invention, in step S2, need to set the temperature of cooling wall body according to blast furnace cooling
t0, actual temperature t of the 3rd temperature transducer 15 of monitoring cooling wall body 3；
As t ＞ t0Time, increase respective regions first and regulate the aperture of valve 6, to increase the current by this cooling water flow conduits 2
Amount, meanwhile, reduces the aperture of the second regulation valve 10 on same group of bypass pipe 9 or closes this second regulation valve 10, reducing bypass pipe 9
Interior discharge, to avoid the discharge in other position cooling water flow conduits is produced impact；
As t ＜ t0Time, reduce the aperture of corresponding first regulation valve 6, to reduce the current by this region cooling water flow conduits 2
Amount, meanwhile, increases the aperture of the second regulation valve 10 on same group of bypass pipe 9, increases the discharge in bypass pipe 9, make cooling water
The water yield that runner 2 reduces flows to last layer from bypass pipe 9, to avoid producing the discharge in the cooling water flow conduits at other position
Impact.
In a preferred embodiment of the invention, t0It it is 14～650 DEG C.Return difference in the temperature control to be had of this setting sets
Fixed, to prevent valve perseveration near set point.
The present invention is when specifically applying, in same layer cooling wall body, and can one, multiple or whole cooling wall body
Water inlet pipe share one water inlet concentrate tube, accordingly, can one, the outlet pipe of multiple or whole cooling wall body share one
Water outlet concentrate tube, namely in same layer intake concentrate tube and annular water outlet concentrate shape can be small arc-shaped, orthodrome or
Complete circle.Adjacent two layers cooling wall body shares a water inlet concentrate tube or water outlet concentrate tube, and the water outlet of i.e. certain layer is concentrated
The water inlet concentrate tube of pipe namely its last layer.The present invention can implement in all of cooling wall water pipe system on blast furnace should
With, or implement according to this programme on a certain layer (section) or certain which floor (section)；The bypass pipe 9 of the present invention can be made into around blast furnace
The endless tube of body, the water inlet pipe 4 of same layer or outlet pipe 8 all connect with this annular bypass pipe.
The present invention will be further described for two embodiments exemplified below.
Embodiment 1
As shown in Figure 1, Figure 3, a kind of blast furnace body soft water sealed cooling system, including being bolted to last furnace shell 20
Some cooling wall bodies 3 of inwall, cooling wall body 3 circumferentially and the most continuously installs multilamellar along blast furnace, often
Layer arranges 48 pieces of cooling wall bodies, is equipped with four cooling water flow conduits 2 in each cooling wall body 3, and cooling water flow conduits 2 two ends are divided
Not Lian Jie cooling wall water inlet pipe 4 and outlet pipe 8, water inlet pipe 4 and outlet pipe 8 pass last furnace shell 20, and water inlet pipe 4 and outlet pipe
It is separately installed with the first temperature transducer 5 on 8 and the second temperature transducer 7, water inlet pipe 4 or outlet pipe 8 are provided with flow sensing
Device 1, cooling wall body 3 is provided with the 3rd temperature transducer 15, and the 3rd temperature transducer 15 gos deep into cooling wall through furnace shell 20
Body 3.Every 6 pieces of cooling wall bodies of same layer are one group, are divided into into 8 groups.Often group cooling wall body 24 water inlet pipes with enter
Water concentrate tube 12 is connected, and 24 outlet pipes 18 that adjacent next layer of cooling wall body is corresponding are also connected with water inlet concentrate tube 12
Logical, each water inlet pipe 4 is equipped with the first regulation valve 6,24 corresponding with the water inlet pipe 4 piece water outlet of these 6 pieces of cooling wall bodies
Pipe 8 is all connected with water outlet concentrate tube 13,24 water inlet pipes 14 of the cooling wall body of last layer also with water outlet concentrate tube 13 phase
Connection, one end of bypass pipe 9 is connected with water inlet concentrate tube 12, and the other end is connected with water outlet concentrate tube 13, on bypass pipe 9
It is provided with regulation valve 10.
Blast furnace cooling means based on embodiment 1, comprises the steps:
S1, for blast furnace a certain layer cooling wall body 3, be one group by every for 48 pieces of cooling wall of this layer 6 pieces of cooling walls, be divided into into
8 groups, often on group cooling wall, all water inlet pipes 4 are all connected with water inlet concentrate tube 12, and water inlet pipe 4 is provided with the first regulation valve, should
Organizing corresponding outlet pipe 8 to be connected with water outlet concentrate tube 13, bypass pipe 9 one end is connected with water inlet concentrate tube 12, the other end
It is connected with the water outlet concentrate tube 13 being connected this layer of cooling wall outlet pipe, bypass pipe 9 is provided with the second regulation valve 10；
S2, the aperture of the first regulation valve controlled on water inlet pipe 4, be increased or decreased the flow in corresponding cooling water flow conduits 2,
To adjust the intensity of cooling in the blast furnace region corresponding to cooling water flow conduits 2, same at the control valve opening controlled on water inlet pipe 4
Time, control the aperture of the second regulation valve on bypass pipe 9, to maintain other to be not required to the flow of the cooling water flow conduits of regulation not by shadow
Ring.
In above-mentioned steps S2, need to set the water-in and water-out temperature difference △ t of cooling water flow conduits 2 according to blast furnace cooling0, this reality
Execute in example, △ t0Being 0.6 DEG C, the actual water-in and water-out temperature difference △ t of monitoring cooling water flow conduits 2, as △ t >=△ t0Time, increase corresponding
On the water inlet pipe 4 of runner, the aperture of the first regulation valve, to increase the flow by this cooling water flow conduits 2, reduces same group simultaneously
On bypass pipe 9, second regulates the aperture of valve or closes this valve, reduces the discharge of bypass pipe, to avoid other runner is produced shadow
Ring；As △ t ＜ △ t0Time, reduce the aperture of the first regulation valve on corresponding water inlet pipe 4, to reduce by this cooling water flow conduits 2
Flow, increases the aperture of the second regulation valve on same group of bypass pipe 9 simultaneously, increases the discharge of bypass pipe, make cooling water flow conduits
The water yield reduced flows to last layer from bypass pipe, to avoid the discharge in the runner at other position is produced impact.
In above-mentioned steps S2, it is also possible to need to set temperature range t of but wall according to blast furnace cooling0, in the present embodiment,
t0Being 14～650 DEG C, actual temperature t of the temperature transducer on monitoring cooling wall, as t >=t0Time, increase respective regions water inlet pipe
The aperture of the first regulation valve on 4, to increase by the flow of this cooling water flow conduits 2, reduces on same group of bypass pipe 9 second simultaneously
Regulate the aperture of valve or close this valve, reducing the discharge of bypass pipe 9, to avoid the current volume production in the runner at other position
Raw impact；As t ＜ t0Time, reduce the aperture of the first regulation valve on corresponding water inlet pipe 4, to reduce by this region cooling water flow conduits
The flow of 2, increases the aperture of the second regulation valve on same group of bypass pipe 9 simultaneously, increases the discharge in bypass pipe 9 road, make cooling
The water yield that water flow passage 2 reduces flows to last layer from bypass pipe 9, to avoid the discharge in the runner at other position is produced shadow
Ring.
Embodiment 2
Other structure of the present embodiment is same as in Example 1, differs only in: all water inlets of same layer cooling wall body
Pipe 4 is connected with water inlet concentrate tube 12, and water inlet concentrate tube 12 is the endless tube of a cincture blast-furnace body.Same layer cooling wall body
All outlet pipes 8 are connected with water outlet concentrate tube 13, and water outlet concentrate tube 13 is the endless tube of a cincture blast-furnace body.On outlet pipe 8
Being provided with the first regulation valve 6, the aperture of control the first regulation valve 6 is to control the size of the discharge by cooling wall as required,
Change the aperture of the second regulation valve 10 on same group of bypass pipe 9, to avoid the current volume production in the runner at other position simultaneously
Raw impact.
The core of the present invention is that the Inlet and outlet water temperature difference according to every piece of cooling wall or wall body temperature change water inlet pipe or water outlet
Manage the valve opening of upper first regulation valve, automatically, actively, directly, instant control corresponding cold of a certain runner, certain several runner
But the intensity of cooling of wall body, makes blast furnace each regional area type of furnace and heat flow density controlled, maintains the optimal type of furnace, prevent out
The accidents such as existing cooling wall knot that is overheated and that occur because intensity of cooling is excessive is thick.By bypass pipe and upper second are regulated valve
Regulation not regulation enters the effect of the discharge of corresponding cooling wall, simply when the first regulation on water inlet pipe or outlet pipe
When valve changes the discharge of cooling wall body, back through the discharge of change bypass pipe, the endless tube of each interval is made to flow out
The water yield remains unchanged, to avoid the discharge in the runner at other position is produced impact.
In the present invention, according to the specification of cooling wall body, the quantity of its cooling water flow conduits is not limited to described in embodiment；Flow
Sensor is mountable to water inlet pipe, outlet pipe optional position, increases the devices such as some manually-operated gates, for the control of cooling water inflow
It is all equivalent；Three-temperature sensor may be mounted on each cooling wall body, it is also possible to one group shares a temperature and passes
Sensor；Embodiment 2 give all water inlet pipes of all cooling wall bodies 3 all with a rhizosphere around the water inlet concentrate tube of blast-furnace body
It is connected；All outlet pipes are all connected around the water outlet concentrate tube of blast-furnace body with a rhizosphere, and the first regulation valve is arranged on water outlet
The situation of pipe 8.In method operation, cool down needs, the water-in and water-out temperature difference △ t of each cooling water flow conduits according to blast furnace0Can be 0.03
～set in the range of 18 DEG C, 0.6 DEG C be not limited in embodiment etc.；Wall body may be set in 14～650 near the temperature of hot side
℃。
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (8)
1. a blast furnace body soft water sealed cooling system, including being arranged at some cooling wall bodies (3) of last furnace shell inwall,
Cooling wall body (3) circumferentially and the most continuously installs multilamellar along blast furnace, is all provided with in each cooling wall body (3)
At least one cooling water flow conduits (2), every cooling water flow conduits (2) two ends is had to connect cooling wall water inlet pipe (4) and outlet pipe respectively
(8), water inlet pipe (4) and outlet pipe (8) pass last furnace shell (20), and are separately installed with on water inlet pipe (4) and outlet pipe (8)
One temperature transducer (5) and the second temperature transducer (7), water inlet pipe (4) or outlet pipe (8) are provided with flow transducer (1), cold
But being provided with the 3rd temperature transducer (15) on wall body (3), described 3rd temperature transducer (15) is through furnace shell (20) deeply
Cooling wall body (3)；
It is characterized in that, described water inlet pipe (4) or outlet pipe (8) are provided with the first regulation valve (6), are in blast furnace same layer
Water inlet pipe (4) on some or all of cooling wall bodies (3) is concentrated with the one or some water inlet arranged around blast furnace
Pipe (12) is connected, and this water inlet concentrate tube (12) is connected with the outlet pipe (18) on the cooling wall body of next layer being adjacent
Logical；The outlet pipe (8) being on some or all of cooling wall bodies (3) of same layer and going out around blast furnace setting
Water concentrate tube (13) is connected, the water inlet on this water outlet concentrate tube (13) and the cooling wall body (3) of last layer that is adjacent
Pipe (14) is connected；It is between water inlet concentrate tube (12) and the water outlet concentrate tube (13) at cooling wall body (3) place of same layer
It is provided with some bypass pipes (9), described bypass pipe (9) is provided with the second regulation valve (10), each flow transducer and temperature transducers
The signal output part of device and the actuator connection control system respectively of each regulation valve, for controlling the aperture of each regulation valve,
Thus control the discharge in cooling wall inner cooling water runner and the discharge in bypass pipe respectively；Opening of described second regulation valve
Degree and the aperture inverse change of the corresponding first regulation valve, so that the discharge in bypass pipe and corresponding cooling water
Discharge inverse change in runner, thus ensure other discharge being not required in the cooling water flow conduits of regulating water flow dimension as far as possible
Hold constant.
Blast furnace body soft water sealed cooling system the most according to claim 1, it is characterised in that described first regulation valve
(6) and the second regulation valve (10) is electric control valve, pneumatic control valve or electro-hydraulic regulation valve.
Blast furnace body soft water sealed cooling system the most according to claim 1, it is characterised in that on described bypass pipe (9)
It is additionally provided with restricting element (11).
4. a blast furnace cooling means based on the blast furnace body soft water sealed cooling system described in any of the above claim, its
It is characterised by, comprises the following steps:
S1, for being in the cooling wall body (3) of blast furnace layer, by this layer of some cooling wall or the water inlet pipe of whole cooling walls
(4) with water inlet concentrate tube (12) be connected, corresponding outlet pipe (8) is connected with water outlet concentrate tube (13), water inlet pipe (4) or
Outlet pipe (8) is provided with the water inlet concentrate tube (12) of the first regulation valve (6), one end of some bypass pipes (9) and this layer of water inlet end
Being connected, its other end is connected with the water outlet concentrate tube (13) of this layer of water side, and bypass pipe (9) is provided with the second regulation valve
(10)；
S2, the aperture of control the first regulation valve (6), be increased or decreased the discharge in corresponding cooling water flow conduits (2), cold to adjust
But the intensity of cooling in the blast furnace region corresponding to water flow passage (2), meanwhile, the aperture controlling the second corresponding regulation valve (10) is reverse
Change, to maintain other discharge being not required in the cooling water flow conduits of regulation unaffected.
Blast furnace cooling means the most according to claim 4, it is characterised in that in step S2, sets according to blast furnace cooling needs
Determine the water-in and water-out temperature difference △ t of cooling water flow conduits (2)0, the actual water-in and water-out temperature difference △ t of monitoring cooling water flow conduits (2)；
As △ t >=△ t0Time, increase the aperture of the first regulation valve (6) corresponding to this cooling water flow conduits (2), cold by this to increase
But the discharge of water flow passage (2), meanwhile, reduce the aperture of upper second regulation valve (10) of same group of bypass pipe (9) or close this
Two regulations valve (10), reduce the discharge in bypass pipe (9), to avoid other cooling water flow conduits is produced impact；
As △ t ＜ △ t0Time, reduce the aperture of the first regulation valve (6) corresponding to this cooling water flow conduits (2), cold by this to reduce
But the discharge of water flow passage (2), meanwhile, increases the aperture of same group of upper second regulation valve (10) of bypass pipe (9), increases bypass pipe
(9) discharge in, the water yield reduced in making this cooling water flow conduits (2) flows to last layer from bypass pipe (9), to avoid other
Discharge in the cooling water flow conduits at position produces impact.
Blast furnace cooling means the most according to claim 5, it is characterised in that described △ t0It it is 0.03～18 DEG C.
Blast furnace cooling means the most according to claim 4, it is characterised in that in step S2, sets according to blast furnace cooling needs
Determine temperature t of cooling wall body (3)0, actual temperature t of the 3rd temperature transducer (15) of monitoring cooling wall body (3)；
As t ＞ t0Time, increase respective regions first and regulate the aperture of valve (6), to increase the current by this cooling water flow conduits (2)
Amount, meanwhile, reduces the aperture of same group of upper second regulation valve (10) of bypass pipe (9) or closes this second regulation valve (10), reducing
Discharge in bypass pipe (9), to avoid the discharge in other position cooling water flow conduits is produced impact；
As t ＜ t0Time, reduce the aperture of corresponding first regulation valve (6), to reduce the current by this region cooling water flow conduits (2)
Amount, meanwhile, increases the aperture of same group of upper second regulation valve (10) of bypass pipe (9), increases the discharge in bypass pipe (9), make
The water yield that cooling water flow conduits (2) reduces flows to last layer from bypass pipe (9), to avoid in the cooling water flow conduits to other position
Discharge produces impact.
Blast furnace cooling means the most according to claim 7, it is characterised in that described t0It it is 14～650 DEG C.
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| CN109295272A (en) * | 2017-07-25 | 2019-02-01 | 宝山钢铁股份有限公司 | Blast furnace sealed cooling system temperature control adjusting method |
| CN109468421A (en) * | 2019-01-10 | 2019-03-15 | 中冶华天工程技术有限公司 | One kind being horizontally staggered adjustable blast-furnace soft water cooling system |
| CN110042181A (en) * | 2019-05-13 | 2019-07-23 | 武汉科技大学 | A method of reply State of Blast Furnace labour later period thermic load impact |
| CN110763019A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Electric smelting magnesia furnace shell cooling device and method |
| CN112129111A (en) * | 2020-08-14 | 2020-12-25 | 中国恩菲工程技术有限公司 | Metallurgical furnace, cooling system, control method, readable storage medium, and electronic device |
| CN115232897A (en) * | 2022-06-28 | 2022-10-25 | 武汉钢铁有限公司 | Method for regulating water quantity of blast furnace soft water closed circulation cooling system |
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| CN109295272A (en) * | 2017-07-25 | 2019-02-01 | 宝山钢铁股份有限公司 | Blast furnace sealed cooling system temperature control adjusting method |
| CN109468421A (en) * | 2019-01-10 | 2019-03-15 | 中冶华天工程技术有限公司 | One kind being horizontally staggered adjustable blast-furnace soft water cooling system |
| CN110042181A (en) * | 2019-05-13 | 2019-07-23 | 武汉科技大学 | A method of reply State of Blast Furnace labour later period thermic load impact |
| CN110763019A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Electric smelting magnesia furnace shell cooling device and method |
| CN112129111A (en) * | 2020-08-14 | 2020-12-25 | 中国恩菲工程技术有限公司 | Metallurgical furnace, cooling system, control method, readable storage medium, and electronic device |
| CN112129111B (en) * | 2020-08-14 | 2022-06-21 | 中国恩菲工程技术有限公司 | Metallurgical furnace, cooling system, control method, readable storage medium, and electronic device |
| CN115232897A (en) * | 2022-06-28 | 2022-10-25 | 武汉钢铁有限公司 | Method for regulating water quantity of blast furnace soft water closed circulation cooling system |
| CN115232897B (en) * | 2022-06-28 | 2023-05-23 | 武汉钢铁有限公司 | Method for adjusting water quantity of blast furnace soft water closed circulation cooling system |
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Effective date of registration: 20170712 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Applicant after: Wuhan iron and Steel Company Limited Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Applicant before: WUHAN IRON AND STEEL CORPORATION |
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Application publication date: 20161116 |