CN201010664Y - Oxygen lance vibration based slag state detecting device of oxygen top blown converter - Google Patents
Oxygen lance vibration based slag state detecting device of oxygen top blown converter Download PDFInfo
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- CN201010664Y CN201010664Y CNU2007201006886U CN200720100688U CN201010664Y CN 201010664 Y CN201010664 Y CN 201010664Y CN U2007201006886 U CNU2007201006886 U CN U2007201006886U CN 200720100688 U CN200720100688 U CN 200720100688U CN 201010664 Y CN201010664 Y CN 201010664Y
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Abstract
The utility model relates to an oxygen core lance vibration-based slag state detection device for oxygen top-blow converter, belonging to metallurgical technical field. The utility model is to solve the problem of accurately detecting the slag molten state. The technical proposal is that the detection device comprises a force transducer, a weighing meter, a PLC, and a display XS, wherein the force transducer is arranged between an oxygen core lance lifting transmission mechanism and the oxygen core lance, the signal output terminal of the force transducer is connected with the signal input terminal of the weighing meter, the signal outlet terminal of the weighing meter is connected with the signal inlet terminal of the PLC, and the display XS is connected with the signal output terminal of the PLC. The utility model has the advantages of reliable performance, high measuring accuracy, remarkably improved monitoring accuracy of converter production process, improved production efficiency, and reduced steel production cost.
Description
Technical field
The utility model relates to a kind of top-blown oxygen converter slag state proofing unit, belongs to metallurgical technology field.
Background technology
Top-blown oxygen converter because have the production efficiency height, cost is low, has become at present a kind of main steelmaking equipment.By the molten steel oxygen blast in the molten bath of oxygen rifle, the converter molten pool surface is covered by slag blanket in smelting process in converter, and slag blanket changes with the fusing degree is different.Slag blanket changes owing to thickness takes place in the foamed effect, and the situation of slag can be described with following 4 kinds of states basically: a is not molten or return dried; The b fusing; The c foamed is flooded the oxygen rifle; Splash seriously takes place in the d foamed.The oxygen rifle is subjected to reactive force, slag buoyancy, and the slag foam surging force of constantly rolling of Oxygen Flow in the oxygen blast process, thereby produces vibration.Slag melted state difference, the reactive force that the oxygen rifle is subjected to are also different, and the vibration under these several power actings in conjunction is low-frequency vibration usually, and its amplitude is relevant with the slag melted state, and is when slag foaming height is big, also big to the buoyancy and the surging force of oxygen rifle.
In oxygen rifle top blast steelmaking process, slag state and the control of oxygen rifle are the cores of steel-making operation.In the past, judged that the method for slag state generally was to observe fire door flame by the workman, judged by rule of thumb.Because this method can not accurately reflect the slag melted state quantitatively, and abnormal conditions such as splash often take place in converter, cause very big loss to production.At present, segment converter adopts the method that sound detection equipment is installed at fire door, detects the Oxygen Flow noise intensity by sound detection equipment, and judges slag state with this.But because this method belongs to Indirect Detecting Method, and exist revolving furnace fume hood to descend and during the fire door accumulated slag noise be blocked problem such as can not accurately detect, thereby its use is very limited.
Summary of the invention
The purpose of this utility model is to provide the slag state proofing unit of the high top-blown oxygen converter of a kind of reliable operation, measuring accuracy based on the oxygen gun vibration.
The alleged problem of the utility model realizes with following technical proposals:
A kind of top-blown oxygen converter is based on the slag state proofing unit of oxygen gun vibration, it is made up of load cell 2, weighing instrument 3, PLC and indicating meter XS, described load cell 2 is installed between oxygen lance lifting transmission rig 1 and the oxygen rifle 4, its signal output part connects the signal input part of weighing instrument 3, the signal output part of described weighing instrument 3 connects the signal input part of PLC, and described indicating meter XS connects the signal output interface of PLC.
Above-mentioned top-blown oxygen converter is set up an oxygen rifle position sensor 9 and an oxygen flow transmitter 10 based on the slag state proofing unit of oxygen gun vibration, and their signal output part connects the signal input part of PLC respectively.
The utility model detects the vibration signal of top-blown oxygen converter oxygen rifle vertical direction in converting process by a load cell, this signal is input in the weighing instrument signal to be handled and then to be delivered to handle among the PLC judges and in indicator screen, the slag melted state is intuitively shown, when foam or splash state take place, can in time provide eye-catching caution.Because in convertor steelmaking process, the oxygen rifle is in the stove always even among the slag, slag state is had direct reflection, and it is few disturbed by other factors, thereby accuracy of detection is protected, and has realized quantitatively accurately monitoring converter slag melted state.The utility model reliable operation, the measuring accuracy height has improved converter production efficiency greatly, has reduced the converter steelmaking cost.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model systematic schematic diagram;
Fig. 2 is a flow sheet;
Fig. 3 is the raw data that load cell is gathered among the embodiment;
Fig. 4 is the amplitude variations curve;
Fig. 5 is that vibrations parameter N, M and oxygen rifle height H, oxygen are pressed the P change curve;
Fig. 6 is a converter slag melted state curve.
Each label is among the figure: 1, oxygen lance lifting transmission rig, 2, load cell, 3, weighing instrument, 4, the oxygen rifle, 5, converter, 6, Oxygen Flow, 7, slag, 8 molten steel, 9, oxygen rifle position sensor, 10, the oxygen flow transmitter, XS, indicating meter.
Embodiment
Among Fig. 1, constituted oxygen rifle Weight-measuring device by load cell 2, weighing instrument 3, PLC system, it monitors the converter slag melted state by the variation that detects oxygen rifle weight, in fact is exactly to reflect the converter slag melted state by detecting the oxygen gun vibration.
Particularly, the utility model utilization is installed on the wireline or the load cell on the rope sheave 2 that hang the oxygen rifle and gathers oxygen rifle weight signal, by load cell 2 weight signal is converted to 4～20mA standard signal, this signal is by computer system or PLC system acquisition.For guaranteeing to reflect oxygen gun vibration situation exactly, the response time requirement of load cell 2 is less than 50ms.
The software of detection system constitutes: links such as the digital conversion by inside computer system or PLC internal system, filtering, amplitude sensing obtain oxygen gun vibration value (changes in weight amount), in order to reflect the changing conditions of oxygen gun vibration, vibration values is exported with histogram form and curve form through integration.Histogram can be understood as the height of the top of the slag basically, and graphic representation can show the rule of the height change of the top of the slag, and this is an expression method more intuitively.
The utility model is when calculating correction factor k, b, when making A get Amin, Amax, the value of oxygen gun vibration parameter N=k (A-b) is respectively-3 and 2, this is the standardisation process of data, purpose is for the calculating that makes the back has identical computation process, gets 2-30 oxygen gun vibration cycle integral time to obtain a good integration response characteristic.
In order to eliminate oxygen lance position and oxygen flow to oxygen rifle effect on amplitude, defeated simultaneously this two signal of people, the result revises to output.Detection principle of the present utility model is:
Converter oxygen gun 4 is molten steel 8 oxygen blast in the molten bath in smelting process; the converter molten pool surface is covered by slag blanket; oxygen rifle 4 is subjected to the reactive force of Oxygen Flow and buoyancy, the impact force action of slag in the oxygen blast process; slag melted state difference; the reactive force that oxygen rifle 4 is subjected to is also different; the oxygen rifle can produce the vibration of low frequency usually in stove under the acting in conjunction of several power, and its amplitude is relevant with the slag melted state.According to above principle, by detecting 4 vertical vibrations of oxygen rifle,, eliminate the influence of oxygen flow through signal processing, can realize quantitative measurment to the slag melted state.
Load cell and weighing instrument require energy measurement oxygen rifle weight, output 4～20mA signal, and the instrument response time is not more than 50mS.At the converter operation room industrial computer that is used for the slag state detection is installed, computer is equipped with data acquisition card or signal acquisition module, realizes the A/D conversion.Oxygen rifle weight signal is sent on the operation room industrial computer by instrument cable.
Oxygen rifle position sensor 9 and oxygen flow transmitter 10 that the utility model is set up all can adopt the transmitter of common type.
On industrial computer, write data processing software, on computer screen, show histogram and graphic representation after handling through integrated, such most convenient as a result shows in configuration software, but other result also can, as long as just passable it when showing as 0～100.So just can set numerical value＜20 easily for molten or return dried, numerical value 20～40 and flood oxygen rifle, numerical value＞60 for the splash warning, this moment, make figure change into redness, to reach the purpose of early warning for fusing, numerical value 40～60 foamed.
Fig. 3 is the raw data of an embodiment of load cell actual measurement, calculates amplitude image 4 by program shown in Figure 2, presses the P correction to obtain amplitude image 5 through rifle position H and oxygen again, the curve among Fig. 5 is carried out integration obtain net result Fig. 6.Among the figure, P is that oxygen is pressed, H is that oxygen lance position, G are that oxygen rifle weight, A are that amplitude, the t of G is that time, N are that oxygen gun vibration parameter, M are the correction functions of N.
Claims (2)
1. a top-blown oxygen converter is based on the slag state proofing unit of oxygen gun vibration, it is characterized in that, it is made up of load cell [2], weighing instrument [3], PLC and indicating meter [XS], described load cell [2] is installed between oxygen lance lifting transmission rig [1] and the oxygen rifle [4], its signal output part meets the signal input end of weighing instrument [3], the signal output part of described weighing instrument meets the signal input end of PLC, and described indicating meter [XS] connects the signal output interface of PLC.
2. according to the slag state proofing unit of the described top-blown oxygen converter of claim 1 based on the oxygen gun vibration, it is characterized in that, set up an oxygen rifle position sensor [9] and an oxygen flow transmitter [10], their signal output part connects the signal input part of PLC respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201006886U CN201010664Y (en) | 2007-02-26 | 2007-02-26 | Oxygen lance vibration based slag state detecting device of oxygen top blown converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201006886U CN201010664Y (en) | 2007-02-26 | 2007-02-26 | Oxygen lance vibration based slag state detecting device of oxygen top blown converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201010664Y true CN201010664Y (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201006886U Expired - Fee Related CN201010664Y (en) | 2007-02-26 | 2007-02-26 | Oxygen lance vibration based slag state detecting device of oxygen top blown converter |
Country Status (1)
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| CN (1) | CN201010664Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504725A (en) * | 2021-07-09 | 2021-10-15 | 衡阳镭目科技有限责任公司 | Real-time slag state monitoring device of converter |
| CN113514104A (en) * | 2021-07-09 | 2021-10-19 | 衡阳镭目科技有限责任公司 | Real-time slag state monitoring method of converter |
-
2007
- 2007-02-26 CN CNU2007201006886U patent/CN201010664Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504725A (en) * | 2021-07-09 | 2021-10-15 | 衡阳镭目科技有限责任公司 | Real-time slag state monitoring device of converter |
| CN113514104A (en) * | 2021-07-09 | 2021-10-19 | 衡阳镭目科技有限责任公司 | Real-time slag state monitoring method of converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI IRON AND STEEL COMPANY LIMITED Free format text: FORMER OWNER: TANGSHAN IRON AND STEEL COMPANY LIMITED Effective date: 20100429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 063016 INTELLECTUAL PROPERTY SECTION, TANGSHAN IRON AND STEEL TECHNOLOGY CENTER, NO.9, BINHE ROAD, TANGSHAN CITY, HEBEI PROVINCE TO: 050000 NO.40, YUHUA WEST ROAD, SHIJIAZHUANG CITY, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100429 Address after: Yuhua city of Shijiazhuang province Hebei 050000 West Road No. 40 Patentee after: Hebei Iron & Steel Co., Ltd. Address before: 063016 Hebei province Tangshan City No. 9 Binhe Road, Tangshan Iron and steel technology center of Intellectual Property Department Patentee before: Tangshan Iron & Steel Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20110226 |