CN203034044U - Level measurement system for converter sublance - Google Patents
Level measurement system for converter sublance Download PDFInfo
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- CN203034044U CN203034044U CN 201320043382 CN201320043382U CN203034044U CN 203034044 U CN203034044 U CN 203034044U CN 201320043382 CN201320043382 CN 201320043382 CN 201320043382 U CN201320043382 U CN 201320043382U CN 203034044 U CN203034044 U CN 203034044U
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- sublance
- liquid level
- measuring system
- level measuring
- revolving furnace
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Abstract
The utility model provides a level measurement system for a converter sublance. The level measurement system comprises a sublance, a compensation lead connected with the sublance, a signal processor connected with the compensation lead, a lifting motor connected with the sublance, and a programmable logic controller PLC connected with the lifting motor, wherein the sublance comprises a lance body and a compound probe which are mutually connected with each other, and the compound probe comprises an external sleeve, a signal output plug-in unit, and an iron core and a coil which are arranged in the external sleeve; and the iron core is wound by the coil and the coil is connected with the signal output plug-in unit, and the sublance acquires feedback voltage in a hearth in real time when being inserted into the converter, and sends the feedback voltage to the signal processor through the compensation lead. The technical problem that the electrode type/fixed oxygen-type level probe in the prior art has low measurement success rate is solved, and the system is favorable for improving steelmaking efficiency, reducing cost, saving energy and reducing consumption.
Description
Technical field
The utility model is about the converter field of measuring technique, and particularly the measuring technology of smelting about the revolving furnace sublance molten steel is a kind of revolving furnace sublance liquid level measuring system concretely.
Background technology
Revolving furnace sublance can be used in the molten steel smelting process, it obtains real data from converter, can detect molten steel molten bath and temperature of solidification, oxygen level and molten metal pool level height, can when being in erect position, converter carry out the molten steel sampling, and need not to interrupt the oxygen blast process, this has great meaning for keeping smelting process to stablize.The position of molten bath molten iron liquid level in the converter is the prerequisite that determines that oxygen rifle blowing height and sublance locate, and needs according to oxygen rifle height and the sublance depth of penetration of processing requirement converting process to be controlled and measured.Therefore, accurately whether molten iron liquid level position numerical value directly influence the quality of convertor steelmaking process and steel.
In the prior art, revolving furnace sublance is generally measured liquid steel level by the combined probe on it, combined probe mainly contains following two kinds of forms: a kind of is to be equiped with two electrodes before probe, turning circuit when probe contacts with metal bath surface, according to the sublance rifle position of this moment, measure the bath surface value; A kind of is to adopt Determining oxygen probe, and when probe during through molten steel-slag blanket interface, molten steel temperature and oxygen activity produce transition, utilize the oxygen gesture to change and this moment sublance the rifle position determine the molten steel face.
There is following technical problem in above-mentioned two kinds of survey level probes that the sublance system uses: the success ratio of measurement is all very low, and can't measure the thickness of slag blanket in the molten bath.Usually it is about 40% that the electrode type level probe is surveyed into rate, decides oxygen type level probe and survey into the about 60%-80% of rate, so will certainly increase the STEELMAKING PRODUCTION cost, reduced production efficiency, and the survey level probe of above-mentioned two kinds of forms all can not well satisfy the requirement of sublance function.
The utility model content
In order to overcome the problems referred to above that prior art exists, the utility model provides a kind of revolving furnace sublance liquid level measuring system, by iron-core coil being integrated in the compound probe of sublance, having solved electrode type of the prior art/decide oxygen type surveys level probe and measures the low technical problem of success ratio, and be conducive to improve steel-making efficient, reduce cost, energy-saving and cost-reducing.
The purpose of this utility model is, a kind of revolving furnace sublance liquid level measuring system is provided, described revolving furnace sublance liquid level measuring system specifically comprises sublance 1, the compensating lead wire 2 that is connected with described sublance, the signal processor 3 that is connected with described compensating lead wire 2, the lifting motor 4 that is connected with described sublance, the programmable logic controller PLC5 that is connected with described lifting motor 4, wherein, described sublance 1, comprise interconnective rifle body 11 and combined type probe 12, described combined type probe 12 comprises outer tube 121, signal output inserter 122, be arranged on iron core 123 and coil 124 in the described outer tube 121, described coil 124 twines described iron core 123 and is connected with described signal output inserter 122, gather the feedback voltage in the burner hearth when described sublance 1 inserts converter in real time, and by described compensating lead wire 2 described feedback voltage is sent to described signal processor 3; Described lifting motor 4, inside is provided with encoder 41, gathers the operation height that described combined type probe 12 inserts converter in real time; Described PLC5 highly is sent to described signal processor 3 with described operation; Described signal processor 3 is determined height and the thickness of slag layer of molten metal pool level according to described operation height and described feedback voltage.
Preferably, described coil 124 and described iron core 123 are fixed on the inwall of described outer tube 121.
Preferably, described coil 124 surfaces scribble insulation layer.
Preferably, described coil 124 is copper cash.
Preferably, described revolving furnace sublance liquid level measuring system also comprises the display unit 6 that is connected with described signal processor 3, shows and store height and the thickness of slag layer of described feedback voltage, operation height, molten metal pool level in real time.
Preferably, described display unit 6 is computer.
The beneficial effects of the utility model are, a kind of revolving furnace sublance liquid level measuring system is provided, by iron-core coil being integrated in the compound probe of sublance, solved electrode type of the prior art/decide oxygen type and surveyed level probe and measure the low technical problem of success ratio, be conducive to improve steel-making efficient, reduce cost, energy-saving and cost-reducing, and effect stability, the rate height surveyed into, the liquid steel level height can not only be measured exactly, also thickness of slag layer can accurately be measured.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of revolving furnace sublance liquid level measuring system that Fig. 1 provides for the utility model embodiment;
The connection diagram of combined type probe in a kind of revolving furnace sublance liquid level measuring system that Fig. 2 provides for the utility model embodiment;
Fig. 3 is according to feedback voltage and moves the graph of relation of highly drawing out voltage-height.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Main purpose of the present utility model is, the sublance that overcomes prior art is surveyed the limitation that level probe exists, and provide a kind of new revolving furnace sublance liquid level measuring system, technical problem to be solved is to make it have the measurement molten steel liquid level function that height is surveyed into rate, simultaneously also can accurately determine the liquid level thickness of slag layer, thereby be suitable for practicality more.
The structural representation of a kind of revolving furnace sublance liquid level measuring system that Fig. 1 provides for the utility model embodiment, as shown in Figure 1, a kind of revolving furnace sublance liquid level measuring system of providing of the utility model specifically comprises sublance 1, the compensating lead wire 2 that is connected with described sublance, the signal processor 3 that is connected with described compensating lead wire 2, the lifting motor 4 that is connected with described sublance, the programmable logic controller PLC5 that is connected with described lifting motor 4;
Described sublance 1 is gathered the feedback voltage in the burner hearth in real time when inserting converter, and by described compensating lead wire 2 described feedback voltage is sent to described signal processor 3;
Described lifting motor 4, inside is provided with encoder 41, gathers the operation height that described combined type probe 12 inserts converter in real time;
Described PLC5 highly is sent to described signal processor 3 with described operation;
Described signal processor 3 is determined height and the thickness of slag layer of molten metal pool level according to described operation height and described feedback voltage.
The connection diagram of combined type probe in a kind of revolving furnace sublance liquid level measuring system that Fig. 2 provides for the utility model embodiment, as seen from Figure 1, Figure 2, described sublance 1 specifically comprises interconnective rifle body 11 and combined type probe 12, wherein, described combined type probe 12 comprises outer tube 121, signal output inserter 122, is arranged on iron core 123 and coil 124 in the described outer tube 121, and described coil 124 twines described iron core 123 and is connected with described signal output inserter 122.
In other embodiments of the present utility model, described coil 124 surfaces can scribble insulation layer, more specifically, described coil 124 can be copper cash, form iron-core coil, its axis is parallel to the medullary ray of combined type probe, and iron core and coil stationary are in the inner chamber end of auxiliary lance probe outer tube 121, in concrete embodiment, can it be bonded on the inwall of outer tube 11 by cement.
The working process of described signal processor is as follows: draw voltage-altitude curve according to described operation height and described feedback voltage; Analyze described voltage-altitude curve, determine the transition point; Determine the height of described molten metal pool level according to described transition point; Determine thickness of slag layer according to described transition point.
For converter, atmosphere is respectively gas cloud, slag blanket and molten steel layer from top to bottom in the converter burner hearth.When auxiliary lance probe descended in air, the feedback voltage that gather this moment was made as A close to a steady state value.When the combined type probe of sublance enters the slag blanket zone by gas cloud, transition will appear in feedback voltage, and the operation of establishing this moment highly is H
1, when the combined type probe entered the slag blanket zone and descends in the slag blanket zone, feedback voltage numerical value remained unchanged substantially, and establishing the feedback voltage of combined type probe in the slag blanket zone is B.When the combined type probe entered into the molten steel layer by slag blanket, transition for the second time can appear in feedback voltage, and the operation of establishing this moment highly is H
2, when the combined type probe entered the molten steel zone and descends in the molten steel zone, the numerical value of the feedback voltage that this moment is corresponding remained unchanged substantially, is made as C.Therefore, highly can draw voltage-altitude curve according to feedback voltage and operation, and determine the transition point that transition takes place by analytical voltage-altitude curve.Can determine molten metal pool level height and thickness of slag layer according to transition point.In this embodiment, the molten metal pool level height is H
2, thickness of slag layer is H
1-H
2
In other embodiments of the present utility model, described revolving furnace sublance liquid level measuring system also comprises the display unit 6 that is connected with described signal processor 3, is used for showing in real time and storing height and the thickness of slag layer of described feedback voltage, operation height, molten metal pool level.In concrete practical application, described display unit 6 can realize by other equipment with storage and Presentation Function, such as computer.So, can pass through height and the thickness of slag layer of the molten metal pool level of display unit real time inspection different times.
Below in conjunction with specific embodiment, introduce a kind of revolving furnace sublance liquid level measuring system that the utility model provides in detail.In specific embodiment, measure the sublance liquid level, the equipment that also needs to be equipped with has complete sublance installations and facilities such as sublance jacking system, sublance horizontal displacement and probe disassembly system, the sublance jacking system is responsible for sublance and the probe lifting action makes probe insert, leave the molten bath, the horizontal displacement system is responsible for sublance and probe are moved to the loading and unloading position, utilizes the probe attaching/detaching apparatus to finish the replacing operation of auxiliary lance probe in the loading and unloading position.
The working process of the revolving furnace sublance liquid level measuring system that the utility model provides is as follows:
When 1, sublance began surveying work, the combined type probe inserted in the converter burner hearth with sublance;
2, when the combined type probe descends in air, the feedback voltage value of combined type probe is a steady state value.
When 3, combined type probe leaves gas cloud and enters the slag blanket zone, transition will appear in feedback voltage, and the operation that promotes motor collection sublance this moment highly is 8.710 meters, and the numerical value transition of feedback voltage reduces, when the combined type probe descended in the slag blanket zone afterwards, this numerical value remained unchanged substantially.
4, when the combined type probe enters into molten steel by slag blanket, transition for the second time will appear in the feedback voltage value, the operation that promotes motor collection sublance this moment highly is 8.290 meters, the numerical value of feedback voltage transition again reduces, the combined type probe moves in molten steel afterwards, feedback voltage remains unchanged substantially, begins to promote until sublance.
5, sublance is sent to signal processor unit by compensating lead wire with feedback voltage, signal processor unit is when the continuous recording feedback voltage changes, also record the operation height of sublance by PLC, thereby highly draw out the graph of relation of voltage-height according to feedback voltage and operation, as shown in Figure 3.
6, signal processor unit is analyzed the graphic representation among Fig. 3 automatically, the position of determining twice transition point appearance is respectively the transition point one shown in Fig. 3 and transition point two, drawing the molten metal pool level height according to this transition point is 8.290 meters, and thickness of slag layer is 0.420 meter.
7, molten metal pool level height and thickness of slag layer are sent to display unit is computer to signal processor unit, is stored and is shown by computer.
By above-mentioned measuring result as can be known, the measuring process that this carries out, verified a kind of revolving furnace sublance liquid level measuring system that the utility model provides, adaptability is strong, can measure converter molten pool thickness of slag layer, liquid steel level height accurately, and measure success ratio and can reach more than 90%, be conducive to improve steel-making efficient, reduce cost, energy-saving and cost-reducing.In addition, combined type in the utility model revolving furnace sublance liquid level measuring system probe also can be integrated into the thermometric sampling respectively decide carbon TSC, thermometric sampling and to decide oxygen TSO, thermometric and take a sample in the combined probes such as TS, to satisfy steel mill's arts demand.
Therefore, a kind of revolving furnace sublance liquid level measuring system that the utility model provides, by iron-core coil being integrated in the compound probe of sublance, surveying level probe with electrode type of the prior art/decide oxygen type compares, not only having solved electrode type of the prior art/decide oxygen type surveys level probe and measures the low technical problem of success ratio, and be conducive to improve steel-making efficient, reduce cost, energy-saving and cost-reducing, effect stability, survey into the rate height, can not only measure the liquid steel level height exactly, also can accurately measure thickness of slag layer.
In addition, a kind of revolving furnace sublance liquid level measuring system that the utility model provides, can be integrated in the compound probe of various types of sublances, adaptability is strong, can measure converter molten pool thickness of slag layer, liquid steel level height accurately, and measure success ratio and can reach more than 90%, be conducive to improve steel-making efficient, reduce cost, energy-saving and cost-reducing.
In sum, a kind of revolving furnace sublance liquid level measuring system that the utility model provides has following technique effect:
(1) revolving furnace sublance liquid level measuring system effect stability of the present utility model is surveyed into the rate height, can not only measure the liquid steel level height exactly, also can accurately measure thickness of slag layer;
(2) revolving furnace sublance liquid level measuring system of the present utility model is accurately stable to molten steel face and thickness of slag layer observed value, is conducive to operator and grasps the converter lining situation, in time safeguards furnace lining, improves converter production efficiency;
(3) revolving furnace sublance liquid level measuring system wide adaptability of the present utility model can be gathered with various sublance composite probes, to satisfy the smelting demand.
Used specific embodiment in the utility model principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. revolving furnace sublance liquid level measuring system, it is characterized in that, described revolving furnace sublance liquid level measuring system specifically comprises sublance (1), the compensating lead wire (2) that is connected with described sublance, the signal processor (3) that is connected with described compensating lead wire (2), the lifting motor (4) that is connected with described sublance, the programmable logic controller PLC(5 that is connected with described lifting motor (4))
Wherein, described sublance (1), comprise interconnective rifle body (11) and combined type probe (12), described combined type probe (12) comprises outer tube (121), signal output inserter (122), be arranged on iron core (123) and coil (124) in the described outer tube (121), described coil (124) twines described iron core (123) and is connected with described signal output inserter (122), gather the feedback voltage in the burner hearth when described sublance (1) inserts converter in real time, and by described compensating lead wire (2) described feedback voltage is sent to described signal processor (3);
Described lifting motor (4), inside are provided with encoder (41), gather the operation height that described combined type probe (12) inserts converter in real time;
Described PLC(5), described operation highly is sent to described signal processor (3);
Described signal processor (3) is determined height and the thickness of slag layer of molten metal pool level according to described operation height and described feedback voltage.
2. revolving furnace sublance liquid level measuring system according to claim 1 is characterized in that, described coil (124) and described iron core (123) are fixed on the inwall of described outer tube (121).
3. revolving furnace sublance liquid level measuring system according to claim 1 is characterized in that, described coil (124) surface scribbles insulation layer.
4. revolving furnace sublance liquid level measuring system according to claim 3 is characterized in that, described coil (124) is copper cash.
5. revolving furnace sublance liquid level measuring system according to claim 1, it is characterized in that, described revolving furnace sublance liquid level measuring system also comprises the display unit (6) that is connected with described signal processor (3), shows and store height and the thickness of slag layer of described feedback voltage, operation height, molten metal pool level in real time.
6. revolving furnace sublance liquid level measuring system according to claim 5 is characterized in that, described display unit (6) is computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043382 CN203034044U (en) | 2013-01-25 | 2013-01-25 | Level measurement system for converter sublance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043382 CN203034044U (en) | 2013-01-25 | 2013-01-25 | Level measurement system for converter sublance |
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| Publication Number | Publication Date |
|---|---|
| CN203034044U true CN203034044U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320043382 Expired - Lifetime CN203034044U (en) | 2013-01-25 | 2013-01-25 | Level measurement system for converter sublance |
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| CN (1) | CN203034044U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148638A (en) * | 2016-08-19 | 2016-11-23 | 武汉市宏森环保技术工程有限责任公司 | BOF Steelmaking Endpoint parameter detecting molten steel of holding concurrently gets sample probe automatic sending and taking system and telescopic tube assembly |
| CN108690899A (en) * | 2017-04-04 | 2018-10-23 | 上海梅山钢铁股份有限公司 | Improve control system and control method that sublance is inserted into precision |
-
2013
- 2013-01-25 CN CN 201320043382 patent/CN203034044U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148638A (en) * | 2016-08-19 | 2016-11-23 | 武汉市宏森环保技术工程有限责任公司 | BOF Steelmaking Endpoint parameter detecting molten steel of holding concurrently gets sample probe automatic sending and taking system and telescopic tube assembly |
| CN106148638B (en) * | 2016-08-19 | 2018-05-11 | 武汉市宏森环保技术工程有限责任公司 | BOF Steelmaking Endpoint parameter detecting and molten steel get sample probe automatic sending and taking system and telescopic tube assembly |
| CN108690899A (en) * | 2017-04-04 | 2018-10-23 | 上海梅山钢铁股份有限公司 | Improve control system and control method that sublance is inserted into precision |
| CN108690899B (en) * | 2017-04-04 | 2020-10-23 | 上海梅山钢铁股份有限公司 | Control system and control method for improving insertion precision of sublance |
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Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |