CN114199039A - Automatic measuring system and method for submerged arc furnace electrode furnace entering depth - Google Patents
Automatic measuring system and method for submerged arc furnace electrode furnace entering depth Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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- G—PHYSICS
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
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Abstract
The application discloses an automatic measuring system for the furnace-entering depth of an electrode of an ore-smelting furnace, which comprises a piezometric meter installed on an electrode holder of the ore-smelting furnace, a temperature measuring device installed on the wall of the ore-smelting furnace, and a voltage acquisition module for acquiring the voltage of the high-voltage side of the ore-smelting furnace; an automatic measuring method for the depth of an electrode of an ore smelting furnace entering into the furnace comprises the following steps: s1, continuously collecting the point temperatures of 45 thermocouples, and collecting current data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power; according to the invention, through the setting of the temperature field, the low-voltage compensation current, the transformer gear signal, the electrode pressure discharge parameter and the transformer bushing current are combined, the operation errors caused by different teams and groups are reduced, the normal production time is prolonged, the manual labor intensity and the errors caused by manual operation are reduced, the safety is improved, the transformation of raw material production to digitization, networking and intellectualization can be realized, and the accuracy of digital production is improved.
Description
Technical Field
The invention relates to the technical field of submerged arc furnace production, in particular to an automatic submerged arc furnace electrode depth measuring system and method.
Background
With the advancement of manufacturing strategies, industrial enterprises are faced with the transformation of digitalization, networking and intelligence. At present, most of domestic industrial enterprises complete the construction of automation and basic informatization systems, but the use and production of submerged arc furnaces are difficult to realize digital operation due to the complexity of the submerged arc furnaces. These problems are hindering the way for intelligent industrial transformation of submerged arc furnace industrial enterprises.
The submerged arc furnace electrode device is a complex system with distributed parameters, nonlinearity, time variation, large hysteresis and multivariable coupling, and from the view of the current process control situation, the production operation of the submerged arc furnace device generally still takes manual experience as the main part, the problems of untimely operation, unmatched adjustment range and the like exist, the phenomenon of large material collapse can often occur, the system fluctuation and the external interference are difficult to overcome better, and the operation habits and the operation methods of different teams and groups are still obviously different. Therefore, the submerged arc furnace device has large fluctuation of key process indexes, poor running stability and high operation strength. In order to further improve the comprehensive automation level of the submerged arc furnace device, reduce the production labor intensity and stabilize the quality of raw material products, a control system which meets the process characteristics and the process control requirements of the submerged arc furnace electrode device needs to be developed and implemented, and therefore the submerged arc furnace electrode furnace-entering depth automatic measurement system is provided to solve the problems.
Disclosure of Invention
The application provides a submerged arc furnace electrode furnace entering depth automatic measuring system and a submerged arc furnace electrode furnace entering depth automatic measuring method, and solves the problems that a traditional raw material production system is complex, production operation of a submerged arc furnace device generally still takes manual experience as a main part, operation is not timely, adjustment amplitude is not matched, and automation level is restricted.
The application provides a hot stove electrode of ore deposit stove goes into stove degree of depth automatic measuring system, including installing in the pressure of hot stove electrode holder meter ware of ore deposit, install the temperature measuring device on the hot stove oven of ore deposit, gather the voltage acquisition module of hot stove high-pressure side voltage of ore deposit, gather the current compensation collection module of hot stove low pressure compensation tasting current of ore deposit, gather hot stove transformer bushing's current collection module of ore deposit, gather the every looks of hot stove and have the displacement signal collection module of jar displacement signal, gather the phase-change transformer gear collection module of hot stove phase-change transformer gear signal of ore deposit, gather the power collection module of hot stove power of ore deposit, collect the data acquisition cabinet of hot stove data of ore deposit, the industrial computer that is used for data processing and the display that is used for human-computer interaction, wherein temperature measuring device, voltage collection module the pressure is put meter ware, current compensation collection module, The current acquisition module, the displacement signal acquisition module, the phase transformer gear acquisition module and the power acquisition module are all led to the data acquisition cabinet through communication lines, and the data acquisition cabinet is connected with the industrial personal computer through Ethernet.
An automatic measuring method for the depth of an electrode of an ore smelting furnace entering into the furnace comprises the following steps:
s1, continuously collecting the point temperatures of 45 thermocouples, and collecting current data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power;
s2, establishing a current depth table of each phase electrode according to the collected 45-point temperature and the current data;
s3, comparing the current depth table with a preset database depth table, searching the closest data, wherein the query precision is less than 0.5%, displaying electrode end position data corresponding to the preset data depth table as real-time electrode furnace entering depth information, and entering a parameter checking stage if no approximate data meeting the requirements exist;
s4, in the field verification stage, manually measuring the position of the end of each phase of electrode, comparing the position with the real-time electrode furnace entering depth information, judging whether the accuracy is less than 10CM, if so, not needing operation, and if not, entering the parameter verification stage.
Preferably, the temperature measuring device comprises three groups of thermocouples arranged on the furnace wall of the submerged arc furnace, each group of thermocouples is 15, the 15 thermocouples are arranged in three rows and five rows, the three groups of thermocouples correspond to the electrodes, and each group of thermocouples are arranged at equal intervals in a 1600mm interval along the direction of the electrodes.
Preferably, the thermocouple is a type K thermocouple.
Preferably, the data acquisition cabinet is a DCS signal cabinet.
Preferably, the preset database depth table is stored by using Microsoft Office Access.
Preferably, the query precision is 0.1%.
Preferably, three sets of said thermocouples are installed at 120 degrees, said thermocouples being installed at the nearest position from each phase electrode.
Preferably, the preset data temperature field comprises the following steps:
s1, before the powerful oil cylinder is lowered down, the system is connected and collects the temperatures of 45 thermocouple points, and a first temperature field of each phase electrode of the submerged arc furnace is established;
s2, collecting a first group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power and uploading the first group of data to a data acquisition cabinet;
s3, manually measuring the position of each phase of electrode tip to obtain first electrode tip position data and form a first depth table corresponding to the first temperature field;
s4, measuring displacement signals of the large force cylinder of each phase and measuring signals of the pressure amplifier meter of each phase to obtain electrode lowering data;
s5, adding the electrode lowering data to the first electrode tip position data obtained in S3 to obtain second electrode tip position data;
s6, collecting a second group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power and uploading the second group of data to a data acquisition cabinet after ten minutes;
s7, collecting the temperature of 45 thermocouple points in a system connection mode, and establishing a second temperature field of each phase electrode of the submerged arc furnace;
s8, forming a second depth table corresponding to the second temperature field, and storing the first depth table and the second depth table into an industrial personal computer database;
and S9, repeating S1-S7 to establish a plurality of groups of first depth tables and second depth tables, storing the first depth tables and the second depth tables into the industrial personal computer database, and forming a database depth table.
Preferably, the parameter verification stage includes the following steps:
s1, collecting the temperature of 45 thermocouple points in a system connection mode, and establishing a verification temperature field of each phase electrode of the submerged arc furnace;
s2, collecting and uploading verification group data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power to a data acquisition cabinet;
s3, manually measuring the position of each phase electrode tip to obtain position data of the verifying electrode tip and form a verifying depth table corresponding to the verifying temperature field;
and S4, storing the check depth table into the database depth table, or covering the original database depth table with completely the same other data except the different electrode tip position data.
According to the technical scheme, the system and the method for automatically measuring the furnace-entering depth of the electrode of the submerged arc furnace are provided, and when the system is used, three groups of thermocouples are arranged in the middle of the furnace wall and are circularly and symmetrically arranged; in principle, the electrodes are arranged at 120 degrees, and if the middle part is blocked, the electrodes are not arranged at 120 degrees, but the electrodes are aligned as far as possible; in the research, 15 thermocouples are averagely arranged in three rows and five rows in an interval of 1600mm for each phase of electrode, a storage temperature field consisting of a plurality of temperature information is established, and it is found that because the temperatures of different positions of the electrodes in the submerged arc furnace are different, and the temperature fields are more approximate under the same parameters, the quality and the useful power of produced raw materials are more identical, so that the positions of the electrodes can be more accurately expressed by the temperature field, therefore, the industrial personal computer establishes the storage temperature field consisting of the plurality of temperature information for the numerical values of the plurality of thermocouples measured by each phase of electrode, in the early stage, field personnel obtain the depth of the electrode entering the furnace by means of manual measurement data, then collects the high-voltage side voltage, the low-voltage compensation current and the transformer bushing current which influence the temperature, uses the information as the condition information of the storage temperature field, the condition information and the temperature of the electrode entering the furnace as an information chain to be stored in the industrial personal computer for storage, forming a database depth meter, performing electrode pressure release by combining a manual production mode, generating an original database, calibrating an automatic measurement system, and accordingly, determining the temperature field by the temperature field and additionally determining the condition of the temperature field, accurately positioning the electrode furnace entering depth, increasing the accuracy along with the larger information amount of the database, simultaneously performing manual measurement and automatic measurement at the early stage of commissioning, confirming the accuracy of automatic measurement, simultaneously verifying about 2 months, and completely adopting automatic measurement if the difference between the two measurement modes is small.
Compared with the prior art, the invention has the beneficial effects that:
1. through the design of the temperature field, the highest point of the temperature field can accurately reflect the position of the electrode in production research, so that the temperature field is adopted, and the useful power, the low-voltage compensation current, the gear signal of the transformer, the displacement parameter of the electrode and the pressure discharge parameter of the electrode are combined; the sampling data is ensured to be real, the control is safe and reliable, errors caused by artificial judgment can be effectively reduced, and the safety of raw material production is improved;
2. electrode currents and other electrode terminal parameters corresponding to a plurality of groups of temperature fields are established, and the temperature fields corresponding to the optimal electrode pressure discharge parameters in the furnace are obtained through useful power, so that the method has guiding significance on the operation of the electric furnace;
3. the manual measurement electrode can be replaced when the device runs for a period of time through a storage processing and query mechanism of the database depth table, so that the manual intensity is reduced, the complex submerged arc furnace pressure discharge process is realized, and the automatic detection control is realized;
4. after the operation many times, can look for the best production parameter through inquiring the database, when guaranteeing the safety in production, can also improve production quality, reduce the energy consumption, and in the automation mechanized operation in later stage, can obtain the temperature field of best lower electrode, the best operating temperature field provides comparatively accurate data information for digital production.
In conclusion, the invention can accurately measure and calculate the feeding depth of the three-phase electrode by setting the temperature field and combining the low-voltage compensation current, the transformer gear signal, the electrode pressure and discharge parameter and the transformer bushing current, the error is within 10cm, the manual electrode measurement can be replaced, the operation errors caused by different teams and groups are reduced, the furnace shutdown times are reduced, the normal production time is prolonged, the manual labor intensity and the errors caused by manual operation are reduced, the transformation from the raw material production to digitization, networking and intelligence can be realized while the safety is improved, and the precision of digital production is improved.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic structural diagram of an automatic submerged arc furnace electrode depth measuring system according to the present invention;
FIG. 2 is a schematic structural diagram of a temperature measuring device of an automatic submerged arc furnace electrode depth measuring system according to the present invention.
In the figure: the device comprises an industrial personal computer 1, a data acquisition cabinet 2, a temperature measuring device 3, a thermocouple 31, a 4-voltage-discharge meter counter, a 5-current compensation acquisition module, a 6-voltage acquisition module, a 7-current acquisition module, an 8-shift signal acquisition module, a 9-phase transformer gear acquisition module and a 10-power acquisition module.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1-2, an automatic submerged arc furnace electrode depth measuring system comprises a pressure-discharge meter 4 installed on an electrode holder of a submerged arc furnace, wherein the pressure-discharge meter 4 is installed at a fixed steel ring of the electrode holder of the submerged arc furnace, each phase electrode is installed, power failure operation is required during installation, locking combination protection is performed, the pressure-discharge operation of the electrodes is monitored, a temperature measuring device 3 installed on the furnace wall of the submerged arc furnace, a voltage collecting module 6 for measuring the nearest three-dimensional temperature information of each phase electrode from the furnace wall and collecting the voltage of the high-voltage side of the submerged arc furnace, a current compensation collecting module 5 for collecting the low-voltage compensation tasting current of the submerged arc furnace, a current collecting module 7 for collecting a casing of a transformer of the submerged arc furnace, a displacement signal collecting module 8 for collecting the phase voltage current of the main transformer and the large-cylinder displacement signal of each phase of the submerged arc furnace can timely obtain the operation signal of the submerged arc furnace electrode, the phase-change transformer gear acquisition module 9 is combined with the pressure-discharge meter 4 to acquire accurate electrode pressure-discharge signals and acquire the phase-change transformer gear signals of the submerged arc furnace, the power acquisition module 10 is used for acquiring active power of the submerged arc furnace, useful power is recorded in each group of acquired information, the accuracy of later-stage search can be ensured, current voltage and electrode depth information of optimal production can be found out in later-stage organization and study, data modeling is convenient, the optimal electrode position is obtained through operation, powerful information is provided for an automatic system in the later stage, the system is upgraded, the data acquisition cabinet 2 is used for collecting submerged arc furnace data, all data collected on site are gathered and uniformly converted into digital signals, the industrial personal computer 1 is used for data processing and a display for human-computer interaction, the industrial personal computer 1 adopts Dell precision T3630, 1T hard disk, the operating system selects WIN7 professional edition, the database selects Microsoft Office Access 2003 Chinese edition, the preset database depth selects Microsoft Office Access 2003 to store, wherein the temperature measuring device 3, the voltage collecting module 6, the piezometric meter 4, the current compensation collecting module 5, the current collecting module 7, the displacement signal collecting module 8, the phase-change transformer gear collecting module 9 and the power collecting module 10 are all led to the data collecting cabinet 2 through 485 communication lines, the data are obtained through a DCS signal cabinet of a user and are accessed into the data collecting cabinet 2, the 485 communication protocol is MODBUS (Modesabus) -RTU protocol, 2 0.5 signal lines are selected, one is slow wired data, the wired data are connected with a safety through hard connection, the data collecting cabinet 2 needs to have good sealing property, insulating property, antimagnetic property, protection grade IP54 grade, the data collecting cabinet 2 is a signal cabinet, can accomplish collection and the conversion of more multidata, data acquisition cabinet 2 is connected with industrial computer 1 through ethernet, sends the data of gathering to industrial computer 1 and stores, sets up the system and seeks.
An automatic measuring method for the depth of an electrode of an ore smelting furnace entering into the furnace comprises the following steps:
s1, continuously collecting point temperatures of 45 thermocouples 31, collecting the three-dimensional temperatures of furnace walls closest to three electrodes in the same submerged arc furnace, judging electrode depth change and electrode temperature information through temperature change, collecting current data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power, and improving the reliability of the data by collecting data influencing the temperature as compensation;
s2, establishing a current depth table of each phase electrode by using the collected 45-point temperature and current data, wherein the depth information table comprises a temperature field, a high-voltage side voltage, a low-voltage compensation current, a transformer bushing current, a phase transformer gear and active power on the wall of the submerged arc furnace at the time, and measuring and inquiring the corresponding position of the electrode tip through each data of the current depth table;
s3, comparing and searching the current depth gauge and a preset database depth gauge, confirming the accuracy of automatic measurement by the preset database depth gauge and verifying the automatic measurement at the same time within about 2 months when reliable data are established in the early stage through manual measurement, if the two measurement modes are not different, completely adopting automatic measurement to search the closest data, wherein the query precision is less than 0.5%, and the query precision can be adjusted to 0.1% in the later stage for improving the precision;
s4, a field calibration stage, wherein the system needs to ensure 1-2 times of manual measurement in one week in the operation stage, the manual measurement is used for checking the system precision and ensuring the accurate operation of the system, the manual measurement is carried out on the position of the end of each phase electrode, the automatic measurement error is ensured to be within a specified range, the accuracy is less than 10CM or not compared with the real-time electrode furnace entering depth information, if yes, no operation is needed, if not, the parameter calibration stage is entered, data is updated, the system error is reduced, and the system temperature is improved.
In the invention, the temperature measuring device comprises three groups of thermocouples 31 arranged on the furnace wall of the submerged arc furnace, the furnace wall is welded and fixed, each group of thermocouples 31 is 15, the 15 thermocouples 31 are three rows and five rows, the thermocouples 31 are K-type thermocouples, the temperature information of each position is the average value of the three thermocouples 31 in the same row, the stability and the reliability of data are ensured, the three groups of thermocouples 31 correspond to electrodes, each group of thermocouples 31 are arranged at equal intervals along the electrode direction within 1600mm interval, the three groups of thermocouples 31 are arranged at 120 degrees, the thermocouples 31 are arranged at the nearest position away from each phase electrode, if the lower part is close to a furnace mouth or a material transporting vehicle is baked at high temperature, a fire baffle plate can be welded at the lower part, the influence caused by external hot ends is avoided, the thermocouples 31 are fixed on the furnace wall, a wire is connected to a K-type thermocouple compensation wire and is led into an on-site instrument box, and the on-site instrument box is arranged on the floor, a K-type thermocouple transmitter, a current acquisition module and a 24V switching power supply are arranged in the cabinet, signals are introduced into the module and are introduced into the data acquisition cabinet 2 through a 485 communication line, and temperature measurement is completed.
In the invention, the preset data temperature field comprises the following steps:
s1, before the powerful oil cylinder is placed downwards, the system is connected with and collects the temperatures of 45 thermocouple 31 point locations, the electrode positions are not moved at the moment, the temperature field at the moment is stable, all information influencing the temperatures is in a stable state, the data information at the temperature is convenient to establish, and the influence of the external temperature on the submerged arc furnace is small, so that the temperature field of the submerged arc furnace is followed by the change of the useful power and the electrode positions, the electrode positions can be better monitored by adopting the temperature field, the first temperature field of each phase electrode of the submerged arc furnace is established, the highest temperature is the position of the electrode head in the temperature field, the temperature at the position is the highest, and a stable electrode working temperature field can be established by combining the information of the transmission voltage current and the compensation current;
s2, collecting a first group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase-change transformer gear and active power, uploading the first group of data to a data acquisition cabinet 2, acquiring data information influencing a temperature field of the submerged arc furnace, and improving the recording precision, wherein the variable information of the high-voltage side voltage, the low-voltage compensation current, the transformer bushing current and the phase-change transformer gear is less, and the relationship among electrode positions of a temperature occasion is mainly established;
s3, manually measuring the position of each phase of electrode tip, adopting a trigonometry measurement, manually measuring at the early stage to ensure the accuracy of the measurement, obtaining the position data of the first electrode tip, forming a first depth table corresponding to the first temperature field, and establishing a standard correct depth table through manual measurement to improve the safety of the system;
s4, manually lowering each phase of electrode of the submerged arc furnace under the powerful oil cylinder, accurately measuring the actual position of the electrode in the furnace (achieving three-phase balance of the electrode) by manually lowering when lowering data are not set in the early stage, measuring the displacement signal of the powerful oil cylinder of each phase and the measurement signal of the pressure-discharge meter of each phase to obtain electrode lowering data, and integrating the displacement signal of the powerful oil cylinder of each phase and the measurement signal of the pressure-discharge meter of each phase to obtain the lowering data of the electrode more accurately;
s5, adding the electrode lowering data to the first electrode tip position data obtained in the S3 to obtain second electrode tip position data, wherein in a short time, the distance of lowering the electrode by the large force oil cylinder is the distance of lowering the tip, so that the position of the electrode tip can be directly calculated through the lowering data, and the times of manual measurement are reduced;
s6, after ten minutes, after the electrodes are placed down, the electrodes need to be collected after the temperature of the submerged arc furnace is stable, in the time period, the height change of the ends of the electrodes is small, a second group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase-change transformer gear and active power is collected and uploaded to the data acquisition cabinet 2, and temperature fields under different electrode depths are established;
s7, collecting the temperature of 45 thermocouples 31 point positions in a system connection mode, establishing a second temperature field of each phase electrode of the submerged arc furnace, and measuring once to obtain electrode information of two different temperature fields;
s8, forming a second depth table corresponding to a second temperature field, temperature information electrode information and information influencing temperature, storing the first depth table and the second depth table into an industrial personal computer 1 database, establishing the depth table through multiple measurements, performing early-stage manual measurement, performing middle-stage manual measurement and system automatic measurement, and verifying at the same time within about 2 months, wherein if the two measurement modes are not very different, the automatic measurement is completely adopted;
and S9, repeating S1-S7 to establish a plurality of groups of first depth tables and second depth tables, storing the first depth tables and the second depth tables into the industrial personal computer 1 database, recording for a plurality of times to form the database depth tables, manually verifying most of the data recorded into the database depth tables, and manually confirming when the data are corrected to avoid the system self-correcting the database depth tables to form accumulated errors, so that the system is high in safety and reliability.
The parameter verification stage comprises the following steps:
s1, collecting the temperature of 45 thermocouples 31 point positions through system connection, calculating to obtain accurate position temperature information, establishing a verification temperature field of each phase electrode of the submerged arc furnace, and reestablishing and verifying the temperature field;
s2, collecting and uploading verification group data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power to a data acquisition cabinet, and collecting and establishing new information;
s3, manually measuring the position of each phase electrode tip to obtain position data of the check electrode tip, manually obtaining standard data to form a check depth table corresponding to the check temperature field, wherein the check depth table is correct data obtained manually;
and S4, storing the check depth table into a database depth table, or covering the original database depth table with the same data except the position data of the electrode tip, wherein all replaced data need manually determined measurement data, so that the introduction of error information into the system is avoided, and the safety of the system is improved.
According to the technical scheme, when in use, the three groups of thermocouples 31 are arranged in the middle of the furnace wall and are circularly and symmetrically arranged; in principle, the electrodes are arranged at 120 degrees, and if the middle part is blocked, the electrodes are not arranged at 120 degrees, but the electrodes are aligned as far as possible; in the research, 15 thermocouples 31 are averagely arranged in three rows and five rows in the interval of 1600mm for each phase of electrode, a storage temperature field consisting of a plurality of temperature information is established, and it is found that because the temperatures of different positions of the electrode in the submerged arc furnace are different, and the temperature fields are more approximate under the same parameters, the quality and useful power of the produced raw materials are more identical, so that the temperature field can more accurately express the position of the electrode, therefore, the industrial personal computer establishes the storage temperature field consisting of a plurality of temperature information for the numerical values of the thermocouples 31 measured by each phase of electrode, in the early stage, field personnel can obtain the depth of the electrode entering the furnace by means of manually measured data, then collect high-voltage side voltage, low-voltage compensation current and transformer bushing current which influence the temperature, use the information as condition information of the storage temperature field, condition information and the temperature of the electrode entering the furnace as an information chain to be stored in the industrial personal computer 1 for storage, forming a database depth meter, performing electrode pressure release by combining a manual production mode, generating an original database, calibrating an automatic measurement system, and accordingly, determining the temperature field by the temperature field and additionally determining the condition of the temperature field, accurately positioning the electrode furnace entering depth, increasing the accuracy along with the larger information amount of the database, simultaneously performing manual measurement and automatic measurement at the early stage of commissioning, confirming the accuracy of automatic measurement, simultaneously verifying about 2 months, and completely adopting automatic measurement if the difference between the two measurement modes is small.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (10)
1. The utility model provides a hot stove electrode in-furnace degree of depth automatic measurement system in ore deposit which characterized in that: the submerged arc furnace temperature measurement device comprises a pressure-discharge meter counter (4) arranged on an electrode holder of the submerged arc furnace, a temperature measurement device (3) arranged on the wall of the submerged arc furnace, a voltage acquisition module (6) for acquiring the voltage of the high-voltage side of the submerged arc furnace, a current compensation acquisition module (5) for acquiring the low-voltage compensation current of the submerged arc furnace, a current acquisition module (7) for acquiring the transformer bushing of the submerged arc furnace, a displacement signal acquisition module (8) for acquiring the large-phase cylinder displacement signal of the submerged arc furnace, a phase transformer gear acquisition module (9) for acquiring the phase transformer gear signal of the submerged arc furnace, a power acquisition module (10) for acquiring the active power of the submerged arc furnace, a data acquisition cabinet (2) for acquiring submerged arc furnace data, an industrial personal computer (1) for data processing and a display for human-computer interaction, wherein the temperature measurement device (3), the voltage acquisition module (6), the pressure-discharge meter counter (4), The current compensation collection module (5), the current collection module (7), the displacement signal collection module (8), the phase transformer gear collection module (9) and the power collection module (10) all lead to through 485 communication lines the data acquisition cabinet (2), the data acquisition cabinet (2) pass through the Ethernet and the industrial personal computer (1) is connected.
2. The method for automatically measuring the furnace entering depth of the electrode of the submerged arc furnace is characterized by comprising the following steps of:
s1, continuously collecting point temperature of 45 thermocouples (31), and collecting current data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power;
s2, establishing a current depth table of each phase electrode according to the collected 45-point temperature and the current data;
s3, comparing the current depth table with a preset database depth table, searching the closest data, wherein the query precision is less than 0.5%, displaying electrode end position data corresponding to the preset data depth table as real-time electrode furnace entering depth information, and entering a parameter checking stage if no approximate data meeting the requirements exist;
s4, in the field verification stage, manually measuring the position of the end of each phase of electrode, comparing the position with the real-time electrode furnace entering depth information, judging whether the accuracy is less than 10CM, if so, not needing operation, and if not, entering the parameter verification stage.
3. The submerged arc furnace electrode furnace entering depth automatic measuring system according to the claim 1, characterized in that the temperature measuring device comprises three groups of thermocouples (31) arranged on the wall of the submerged arc furnace, each group of thermocouples (31) comprises 15 thermocouples, 15 thermocouples (31) are arranged in three rows and five rows, three groups of thermocouples (31) correspond to the electrodes, and each group of thermocouples (31) are arranged at equal intervals in the 1600mm interval along the electrode direction.
4. The system according to claim 3, wherein the thermocouple (31) is a K-type thermocouple.
5. The system for automatically measuring the furnace entering depth of the submerged arc furnace electrode as claimed in claim 1, wherein the data acquisition cabinet (2) is a DCS signal cabinet.
6. The system of claim 1, wherein the predetermined database depth table is stored in Microsoft Office Access.
7. The method of claim 2, wherein the query precision is 0.1%.
8. The automatic submerged arc furnace electrode furnace entry depth measuring system according to claim 1, characterized in that three sets of said thermocouples (31) are installed at 120 degrees, said thermocouples (31) being installed at the nearest position from each phase electrode.
9. The method for automatically measuring the submerged arc furnace electrode furnace entering depth according to claim 2, wherein the preset database depth table comprises the following steps:
s1, before the large-force oil cylinder is lowered down, the system is connected and collects the temperature of the point positions of 45 thermocouples (31), and a first temperature field of each phase electrode of the submerged arc furnace is established;
s2, collecting a first group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power, and uploading the first group of data to a data acquisition cabinet (2);
s3, manually measuring the position of each phase of electrode tip to obtain first electrode tip position data and form a first depth table corresponding to the first temperature field;
s4, each phase of electrode of the submerged arc furnace is placed under the large-force oil cylinder, and displacement signals of the large-force oil cylinder and measurement signals of the pressure-discharge meter (4) of each phase are measured to obtain electrode placement data;
s5, adding the electrode lowering data to the first electrode tip position data obtained in S3 to obtain second electrode tip position data;
s6, collecting a second group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power and uploading the second group of data to the data acquisition cabinet (2) ten minutes later;
s7, collecting the temperature of 45 thermocouple (31) points by system connection, and establishing a second temperature field of each phase electrode of the submerged arc furnace;
s8, forming a second depth table corresponding to the second temperature field, and storing the first depth table and the second depth table into a database of the industrial personal computer (1);
and S9, repeating S1-S7 to establish a plurality of groups of first depth tables and second depth tables, storing the first depth tables and the second depth tables into the database of the industrial personal computer (1), and forming a database depth table.
10. The method for automatically measuring the furnace entering depth of the submerged arc furnace electrode as claimed in claim 2, wherein the parameter verification stage comprises the following steps:
s1, collecting the temperature of 45 thermocouple (31) points by system connection, and establishing a calibration temperature field of each phase electrode of the submerged arc furnace;
s2, collecting and uploading verification group data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power to a data acquisition cabinet (2);
s3, manually measuring the position of each phase electrode tip to obtain position data of the verifying electrode tip and form a verifying depth table corresponding to the verifying temperature field;
and S4, storing the check depth table into the database depth table, or covering the original database depth table with completely the same other data except the different electrode tip position data.
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