CN105600460B - A kind of blast furnace dregs thick liquid expulsion system and its control method - Google Patents
A kind of blast furnace dregs thick liquid expulsion system and its control method Download PDFInfo
- Publication number
- CN105600460B CN105600460B CN201610142548.9A CN201610142548A CN105600460B CN 105600460 B CN105600460 B CN 105600460B CN 201610142548 A CN201610142548 A CN 201610142548A CN 105600460 B CN105600460 B CN 105600460B
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- CN
- China
- Prior art keywords
- pulp pump
- slurry
- liquid level
- frequency drive
- furnace
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/30—Conveying materials in bulk through pipes or tubes by liquid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
Abstract
The present invention relates to a kind of blast furnace dregs thick liquid expulsion system, including granulated blast-furnace tower, granulator is provided in the granulated blast-furnace tower, the side of the granulated blast-furnace tower is provided with slag inlet, and top is provided with water inlet；Pressure transmitter is additionally provided in the granulated blast-furnace tower; the granulated blast-furnace tower bottom is provided with two and goes out slurry pipeline; wherein one go out slurry pipeline be connected with main Frequency Drive Pulp pump; another goes out slurry pipeline and is connected with auxiliary Frequency Drive Pulp pump; the main Frequency Drive Pulp pump, auxiliary Frequency Drive Pulp pump are respectively connected with slurry transport pipeline, and the main Frequency Drive Pulp pump, auxiliary Frequency Drive Pulp pump are respectively connected to control respective Pulp pump frequency converter；The pressure transmitter is connected to local digital display level meter, and the local digital display level meter is connected to the input terminal of signal isolation distributor by shielded cable, and the two-way output end of signal isolation distributor is respectively connected to two Pulp pump frequency converters.
Description
Technical field
The invention belongs to steel smelting equipment technical fields, and in particular to the transportation system in a kind of steel smelting procedure
And control method, especially a kind of blast furnace dregs thick liquid expulsion system and its control method；Realize the full water quenching grain of blast furnace process molten iron slag
Slugging slurry conveying, non-irrigated slag zero-emission while improving environmental benefit, reduce production cost.
Background technique
In steel manufacture process, water cooling is very vital technique process, it may be said that from ironmaking to steel-making, from
It makes steel steel rolling and all be unable to do without water cooling.
Generated a large amount of scums, steel slag in steel manufacture process form scum, steel slag and water after water cooling
Mixture-- slurry, the slurry needs at every moment generated in production timely continuously transport, the company of steel producing line
Continuous high and stable yields can just be carried out.
However due to smelting process for production adjustment or charge composition structural change, and trial production and cost declining new process
Quantity of slag variation abnormality caused by method such as strong power is smelted, and cause the fluctuation of slurry conveying capacity violent；On the other hand, due to slurry
Middle pellet hardness is larger, Pulp pump conveying equipment（The pump housing and impeller draw slurry pipeline and conveyance conduit）Institute is frayed acutely, easily
Damage is even scrapped thoroughly for leakage.These two aspects reason can seriously affect slurry pump duty or even non-irrigated slag is caused to discharge or be forced to stop
Wind influences to smelt normal production；This is prior art shortcoming.
Therefore it provides designing a kind of blast furnace dregs thick liquid expulsion system and its control method, to solve the above technical problems, right and wrong
Often it is necessary to.
Summary of the invention
It is an object of the present invention to cannot be according to the slurry of actual output for above-mentioned Pulp pump of the existing technology
Amount provides so that slurry timely and effectively to be transported out of to the defect of production line and designs a kind of blast furnace dregs thick liquid expulsion system and its controlling party
Method, to solve the above technical problems；Realize that the full water quenching granulating slurry conveying of blast furnace process molten iron slag, non-irrigated slag zero-emission improve ring
While protecting benefit, production cost is reduced.
To achieve the above object, the present invention provides following technical scheme：
A kind of blast furnace dregs thick liquid expulsion system, including granulated blast-furnace tower are provided with granulator in the granulated blast-furnace tower, institute
The side for stating granulated blast-furnace tower is provided with slag inlet, and top is provided with water inlet；It is characterized in that：In the granulated blast-furnace tower
It is additionally provided with pressure transmitter, the granulated blast-furnace tower bottom is provided with two and goes out slurry pipeline, wherein one goes out slurry pipe
Road is connected with main Frequency Drive Pulp pump, and another goes out slurry pipeline and be connected with auxiliary Frequency Drive Pulp pump, the main transformer frequency
Transmission Pulp pump, auxiliary Frequency Drive Pulp pump are respectively connected with slurry transport pipeline, the main Frequency Drive Pulp pump, auxiliary frequency conversion
Transmission Pulp pump is respectively connected to control respective Pulp pump frequency converter；
The pressure transmitter is connected to local digital display level meter, and the local digital display level meter passes through shielded cable
It is connected to the input terminal of signal isolation distributor, the two-way output end of signal isolation distributor is respectively connected to two slurries
Pump frequency conversion device.
Preferably, wear-resistant material protective layer is filled in the slurry transport pipeline；To prevent the strength of scum slurry
Abrasion, improves service life.
Preferably, the wear-resistant material protective layer is wear resistant protective ceramic layer；It further enhances to slurry transport pipeline
Protection effect.
Preferably, the wear resistant protective ceramic layer with a thickness of 5mm to 10mm.
Preferably, the wear resistant protective ceramic layer with a thickness of 8mm.
A kind of control method of blast furnace dregs thick liquid expulsion system, includes the following steps：
S1：Detect slurry liquid level in granulated blast-furnace tower：It is detected by the pressure transmitter being arranged in granulated blast-furnace tower
Slurry liquid level in tower；
S2：The slurry liquid level detected is analyzed, and makes corresponding operating：Pressure transmitter will be collected
Slurry liquid level elevation information is sent to local digital display level meter, and local digital display level meter carries out collected slurry liquid level
It is locally displayed, while slurry liquid level elevation information is sent to two slurries by signal isolation distributor by local digital display level meter
Pump frequency conversion device, if the slurry liquid level detected within the scope of preset height, continues by main Frequency Drive Pulp pump
The transport of slurry is carried out, if the slurry liquid level detected exceeds preset height, starts auxiliary Frequency Drive Pulp pump, by
Main Frequency Drive Pulp pump, auxiliary Frequency Drive Pulp pump transport slurry jointly.
The beneficial effects of the present invention are using two Frequency Drive Pulp pumps, independently PID adjusts AC frequency conversion biography
It is dynamic, and then it is based on the major-minor operation of Liquid level two pumps, in due course automatic start-stop, to realize that slurry conveys automatic model- following control；
It realizes that major-minor pump startup stops control automatically based on liquid level adjusting, slurry conveying capacity size is automatically adjusted, to realize that slurry is defeated
It send system that production technology adjustment is followed to change automatically to fluctuate with the quantity of slag caused by plant issue, realizes the full water of blast furnace process molten iron slag
Quench be granulated slurry conveying, non-irrigated slag zero-emission, environmental benefit and production cost declining remarkable benefit.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
It can be seen that substantive distinguishing features outstanding and significantly improve compared with prior art, the present invention having, implementation
Beneficial effect be also obvious.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of blast furnace dregs thick liquid expulsion system provided by the invention.
Fig. 2 is a kind of control principle drawing of blast furnace dregs thick liquid expulsion system provided by the invention.
Fig. 3 is the functional block diagram of Pulp pump frequency converter in Fig. 2.
Wherein, 1- granulated blast-furnace tower, 2- granulator, 3- slag inlet, 4- water inlet, 5- pressure transmitter, 6- go out slurry pipe
Road, the main Frequency Drive Pulp pump of 7-, the auxiliary Frequency Drive Pulp pump of 8-, 9- Pulp pump frequency converter, the local 10- digital display level meter, 11-
Signal isolation distributor, 12- slurry transport pipeline.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing and by specific embodiment, and following embodiment is to the present invention
Explanation, and the invention is not limited to following implementation.
As shown in Figures 1 to 3, a kind of blast furnace dregs thick liquid expulsion system provided by the invention, including granulated blast-furnace tower 1, it is described
Granulator 2 is provided in granulated blast-furnace tower 1, the side of the granulated blast-furnace tower 1 is provided with slag inlet 3, and top is provided with into water
Mouth 4；Pressure transmitter 5 is additionally provided in the granulated blast-furnace tower 1,1 bottom of granulated blast-furnace tower is provided with two and goes out
Slurry pipeline 6, wherein one goes out slurry pipeline and is connected with main Frequency Drive Pulp pump 7, another go out slurry pipeline be connected with it is auxiliary
Frequency Drive Pulp pump 8, the main Frequency Drive Pulp pump 7, auxiliary Frequency Drive Pulp pump 8 are respectively connected with slurry transport pipeline
12, the main Frequency Drive Pulp pump 7, auxiliary Frequency Drive Pulp pump 8 are respectively connected to control respective Pulp pump frequency converter
9；
The pressure transmitter 5 is connected to local digital display level meter 10, and the local digital display level meter 10 passes through screen
The input terminal of cable connection to signal isolation distributor 11 is covered, the two-way output end of signal isolation distributor 11 is respectively connected to described
Two Pulp pump frequency converters 9.
In the present embodiment, wear-resistant material protective layer is filled in the slurry transport pipeline 12；To prevent scum slurry
Strength abrasion, improve service life.
In the present embodiment, the wear-resistant material protective layer is wear resistant protective ceramic layer；It further enhances and slurry is transported
The protection effect of pipeline.
In the present embodiment, the wear resistant protective ceramic layer with a thickness of 8mm.
In other embodiments, the wear resistant protective ceramic layer with a thickness of 5mm or 10mm.
The analog input signal of Pulp pump frequency converter has channel AI1 and AI2 in the present embodiment, and AI1 accesses potentiometer,
0-10V voltage signal, artificial knob manually adjust；AI2 accesses live granulated blast-furnace tower slurry liquid level signal, as actual liquid level
Feedback signal, be compared with the target value of setting then as control Signal Regulation control frequency converter, i.e., realization liquid level PID
Auto-adjustment control.Manual automatic two kinds of control modes are by change-over switch artificial selection.Outside another Pulp pump frequency changer direct current bus
Connect direct current reactor, it is therefore an objective to change and improve the power factor of complete equipment.
In the present embodiment, a kind of control method of blast furnace dregs thick liquid expulsion system is given, is included the following steps：
S1：Detect slurry liquid level in granulated blast-furnace tower：It is detected by the pressure transmitter being arranged in granulated blast-furnace tower
Slurry liquid level in tower；
S2：The slurry liquid level detected is analyzed, and makes corresponding operating：Pressure transmitter will be collected
Slurry liquid level elevation information is sent to local digital display level meter, and local digital display level meter carries out collected slurry liquid level
It is locally displayed, while slurry liquid level elevation information is sent to two slurries by signal isolation distributor by local digital display level meter
Pump frequency conversion device, if the slurry liquid level detected within the scope of preset height, continues by main Frequency Drive Pulp pump
The transport of slurry is carried out, if the slurry liquid level detected exceeds preset height, starts auxiliary Frequency Drive Pulp pump, by
Main Frequency Drive Pulp pump, auxiliary Frequency Drive Pulp pump transport slurry jointly.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this field
What technical staff can think does not have creative variation, and without departing from the principles of the present invention made by several improvement and
Retouching, should all be within the scope of the present invention.
Claims (1)
1. a kind of control method of blast furnace dregs thick liquid expulsion system, includes the following steps：
S1：Detect slurry liquid level in granulated blast-furnace tower：It is detected in tower by the pressure transmitter being arranged in granulated blast-furnace tower
Slurry liquid level；
S2：The slurry liquid level detected is analyzed, and makes corresponding operating：Pressure transmitter is by collected slurry
Liquid level information is sent to local digital display level meter, and local digital display level meter carries out collected slurry liquid level local
It has been shown that, while slurry liquid level elevation information is sent to two Pulp pumps by signal isolation distributor and become by local digital display level meter
Frequency device, if the slurry liquid level detected within the scope of preset height, continues to be carried out by main Frequency Drive Pulp pump
The transport of slurry starts auxiliary Frequency Drive Pulp pump, by main transformer if the slurry liquid level detected exceeds preset height
Keep pouring in dynamic Pulp pump, auxiliary Frequency Drive Pulp pump transports slurry jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142548.9A CN105600460B (en) | 2016-03-14 | 2016-03-14 | A kind of blast furnace dregs thick liquid expulsion system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142548.9A CN105600460B (en) | 2016-03-14 | 2016-03-14 | A kind of blast furnace dregs thick liquid expulsion system and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN105600460A CN105600460A (en) | 2016-05-25 |
| CN105600460B true CN105600460B (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610142548.9A Expired - Fee Related CN105600460B (en) | 2016-03-14 | 2016-03-14 | A kind of blast furnace dregs thick liquid expulsion system and its control method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205419100U (en) * | 2016-03-14 | 2016-08-03 | 山东钢铁股份有限公司 | High slag thick liquid conveying system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI106705B (en) * | 1999-04-09 | 2001-03-30 | Esa Kuismanen | Procedure and arrangement for pumping material |
| CN202125420U (en) * | 2011-05-31 | 2012-01-25 | 陕西金源自动化科技有限公司 | Intelligent liquid level control box |
| CN202975851U (en) * | 2012-12-07 | 2013-06-05 | 上海神开石油化工装备股份有限公司 | Explosion-proof liquid-level control apparatus with man-machine interaction interface |
| CN204081056U (en) * | 2014-09-22 | 2015-01-07 | 国家电网公司 | A kind of power distribution room ponding is reported to the police and self-draining arrangement |
| CN104635770B (en) * | 2015-01-09 | 2017-05-24 | 山西太钢不锈钢股份有限公司 | Classifier control method based on pulp pump sump liquid level as main control parameter |
| CN204455147U (en) * | 2015-03-13 | 2015-07-08 | 山东钢铁股份有限公司 | A kind of granulation tower slag-water slurry constant fluid level control device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205419100U (en) * | 2016-03-14 | 2016-08-03 | 山东钢铁股份有限公司 | High slag thick liquid conveying system |
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