CN217900525U - Automatic measuring system for electrode furnace entering depth of submerged arc furnace - Google Patents
Automatic measuring system for electrode furnace entering depth of submerged arc furnace Download PDFInfo
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Abstract
The application discloses hot stove electrode of ore deposit stove goes into stove degree of depth automatic measuring system, including installing in the pressure that hot stove electrode holder of ore deposit stove meter ware, install the temperature measuring device on the hot stove wall of ore deposit stove, gather the voltage acquisition module of the hot stove high-pressure side voltage of ore deposit stove, gather the current compensation collection module of the hot stove low pressure of ore deposit stove and mend the tasting current, gather hot stove transformer sheathed tube current collection module of ore deposit stove, gather the displacement signal collection module of every looks of the hot stove of ore deposit jar displacement signal that energetically, gather the phase-change transformer gear collection module of hot stove phase-change transformer gear signal of ore deposit stove. The utility model discloses a parameter and transformer bushing electric current are put to the setting in temperature field, combination low pressure compensating current, transformer gear signal, electrode pressure, reduce the operation error that different teams and groups brought, prolong normal production time, and reduce the error that artifical intensity of labour and manual operation brought, when improving safety, can also realize the raw materials production to digitization, intelligent transformation, improve the precision of digital production.
Description
Technical Field
The utility model relates to a hot stove production technical field in ore deposit especially relates to a hot stove electrode in ore deposit goes into stove degree of depth automatic measuring system.
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 electrode device of the submerged arc furnace is a complex system with distributed parameters, nonlinearity, time variation, large lag and multivariable coupling, and from the current process control situation, the production operation of the submerged arc furnace device generally mainly takes manual experience, the problems of untimely operation, unmatched adjustment amplitude and the like exist, the phenomenon of large material collapse can occur frequently, the system fluctuation and the external interference are difficult to overcome well, and the operation habits and the operation methods of different 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.
SUMMERY OF THE UTILITY MODEL
The application provides a hot stove electrode of ore deposit degree of depth automatic measuring system of going into stove has solved traditional raw materials production system complicacy, and the production operation of the hot stove device of ore deposit still uses artificial experience as the main whole, has the operation untimely, the regulation range mismatch, restricts the problem of automation level.
The application provides a submerged arc furnace electrode furnace entering depth automatic measuring system, including install in submerged arc furnace electrode holder's pressure discharge meter rice ware, install the temperature measuring device on the submerged arc furnace oven, gather the voltage acquisition module of submerged arc furnace high pressure side voltage, gather the submerged arc furnace low pressure and mend the current compensation collection module of tasting the electric current, gather submerged arc furnace transformer sheathed tube current collection module, gather the submerged arc furnace every looks great cylinder displacement signal's displacement signal collection module, gather the submerged arc furnace phase-change transformer gear collection module of gear signal, gather submerged arc furnace power's power collection module, collect the data acquisition cabinet of the submerged arc furnace data, be used for data processing's industrial computer and be used for human-computer interaction's display, wherein temperature measuring device voltage collection module the pressure discharge meter rice ware current compensation collection module the current collection module displacement signal collection module phase-change gear collection module with the power collection module all leads to the data acquisition cabinet through the communication line, the data acquisition cabinet pass through the ethernet with the industrial computer is connected.
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, three sets of said thermocouples are installed at 120 degrees, said thermocouples being installed at the nearest position from each phase electrode.
According to the technical scheme, the automatic measuring system for the submerged depth of the electrode of the submerged arc furnace is provided, and when the automatic measuring 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 according to 120 degrees, if the middle part is blocked, the electrodes can not be arranged according to 120 degrees, but the electrodes are aligned as much as possible; in the research, 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 produced raw material quality and the available power are more equal, so the temperature field can more accurately express the position of the electrode, the industrial personal computer establishes the stored temperature field consisting of the temperature information, in the early stage, field personnel obtain the electrode furnace-entering depth by virtue of manual measurement 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 stored temperature field, store the stored temperature field, condition information and the electrode furnace-entering temperature as an information link, form a database depth table, perform electrode pressure release by combining with a manual production mode, generate an original measurement database, and use an automatic measurement system, therefore, the larger the temperature field is used, the condition information determined by adding the temperature field is added, the electrode furnace-entering temperature is stored in the industrial personal computer for performing automatic measurement, and the automatic measurement is performed by adopting two modes of manually verifying the accuracy, and automatically verifying the measurement data, and automatically verifying the measurement accuracy of the electrode furnace-entering depth, and measuring accuracy are higher, and the measurement data are automatically performed by adopting two automatic measurement modes.
Compared with the prior art, the beneficial effects of the utility model are 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;
to sum up, the utility model discloses a setting in temperature field combines low pressure compensating current, transformer gear signal, electrode to press and puts parameter and transformer bushing electric current, can accurately calculate three-phase electrode pan feeding degree of depth, the error is within 10cm, can replace artifical measuring electrode, reduce the operating error that different teams and groups brought, reduce blowing out times, the normal production time of extension, and reduce the error that artifical intensity of labour and manual operation brought, when improving safety, can also realize the transformation of raw materials production to digitization, networking, intellectuality, improve the precision of digital production.
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 view of an automatic measuring system for the electrode penetration depth of a submerged arc furnace provided by the utility model;
fig. 2 is the utility model provides a hot stove electrode in-furnace degree of depth automatic measuring system's of ore deposit temperature measuring device schematic diagram.
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, the system comprises a hard disk 1T, an operating system, a database, a temperature measuring device 3, a voltage acquisition module 6, a piezometer counter 4, a current compensation acquisition module 5, a current acquisition module 7, a displacement signal acquisition module 8, a phase change transformer gear acquisition module 9 and a power acquisition module 10, wherein the professional version WIN7 is selected for use as the operating system, the Chinese version Microsoft Office 2003 is selected for use as the database depth table which is set in advance, the database depth table is selected for use as the Microsoft Office 2003 for storage, the temperature measuring device, the voltage acquisition module 6, the piezometer counter 4, the current compensation acquisition module 5, the current acquisition module 7, the displacement signal acquisition module 8, the phase change transformer gear acquisition module 9 and the power acquisition module 10 are all led to a data acquisition cabinet 2 through 485 communication lines, the data are accessed into the data acquisition cabinet 2, the data acquisition cabinet 2 is a MODBUS (Morebas) -RTU protocol through 485 communication protocols, 2.0.5 signal lines are selected, one is slow in wired data, the second, the hard connection is safe, the data acquisition cabinet 2 needs to have good sealing performance, insulativity and magnetism prevention, the protection level IP54, the data acquisition cabinet is a DCS signal cabinet, the data acquisition cabinet 2 is a DCS signal cabinet which can complete the collection and conversion of more data collection, the industrial personal computer 1 is connected through an Ethernet, the industrial personal computer is used as the industrial computer, and the industrial computer to establish the storage system.
The specific operation comprises the following steps:
s1, continuously collecting the temperatures of 31 point positions of 45 thermocouples, collecting the three-dimensional temperatures of furnace walls closest to three electrodes in the same submerged arc furnace, judging the depth change of the electrodes and the temperature information of the electrodes according to the 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 according to the collected 45-point temperature and current data, wherein the depth information table comprises a temperature field, high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase transformer gear and active power of the ore-smelting furnace wall at the time, and measuring and inquiring the corresponding position of the electrode tip according to each data of the current depth table;
s3, comparing and searching the current depth table and a preset database depth table, confirming the accuracy of automatic measurement by the preset database depth table and simultaneously verifying within about 2 months for reliable data established by manual measurement in the early stage when the current depth table is established, if the two measurement modes are not different greatly, 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% for improving the precision in the later stage;
s4, on-the-spot check-up stage, the system need guarantee the artifical measurement of a week 1-2 times in the operation stage, be used for detecting system precision, ensure the accurate operation of system, artifical to measuring every looks electrode end position, ensure that the automatic measure error is in the regulation scope, go into the stove degree of depth information comparison with real-time electrode, whether the degree of accuracy is less than 10CM, if yes, do not need the operation, if no, get into the parameter check-up stage, update data, reduce system error, improve system temperature, this system and Qingdao Fei special observe and control energy-saving science and technology limited company, utility model ZL 2016104475.2 uses jointly, the concrete operation of this patent is seen this patent technology in detail, both combine to further improve the accurate position information of ore smelting stove electrode, make the raw materials production step by step towards the digitization step forward.
The utility model discloses in, temperature measuring device is including installing three group's thermocouples 31 on the hot stove oven in ore deposit, at oven welded fastening, every group thermocouple 31 is 15, and 15 thermocouples 31 are five rows of three rows, thermocouple 31 is K type thermocouple, the temperature information of every position is the average value of same three thermocouple 31 of a row, guarantee the steady and reliable of data, three group's thermocouples 31 and electrode correspond, and every group thermocouple 31 of group arranges along electrode direction 1600mm interval equidistant, three group's thermocouples 31 are 120 degrees installations, thermocouple 31 installs in the nearest position department apart from every looks electrode, if following, it is too close to lean on the fire door, or there is dumper high temperature to toast, can weld a fire baffle below, avoid the influence that external hot junction brought, fix thermocouple 31 on the oven, wiring leads to K type thermocouple compensation wire and introduces on-the-spot instrument box, install K type thermocouple changer on the spot in the cabinet, current collection module, 24V switching power supply, introduce the module with the signal, lead to data acquisition cabinet through 485 communication lines, accomplish temperature measurement cabinet 2.
Specifically, the preset data temperature field comprises the following steps:
s1, before a large-force oil cylinder is placed downwards, a system is connected with and collects the temperatures of 31 point positions of 45 thermocouples, the electrode position is not moved at the moment, the temperature field is stable at the moment, all information influencing the temperature is in a stable state, data information under the temperature is convenient to establish, and the influence of the external temperature on a submerged arc furnace is small, so that the temperature field of the submerged arc furnace is closely followed, the useful power and the position of the electrode are changed, the position of the electrode can be better monitored by adopting the temperature field, a first temperature field of each phase electrode of the submerged arc furnace is established, the highest temperature is the position of an electrode head under the temperature field, the temperature of the electrode head is highest, and a stable electrode working temperature field can be established by combining the information of voltage and current transmission and 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 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 in a temperature occasion is mainly established;
s3, manually measuring the position of the electrode tip of each phase, measuring by adopting a trigonometry method, carrying out manual measurement in the early stage to ensure the accuracy of measurement, obtaining position data of the electrode tip of the first electrode, 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) when lowering data is not set in the early stage, measuring displacement signals of the powerful oil cylinder of each phase and measuring signals of the pressure-release meter of each phase to obtain electrode lowering data, and integrating the displacement signals of the powerful oil cylinder of each phase and the measuring signals of the pressure-release 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 for lowering the electrode by the powerful oil cylinder is the distance for 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, collecting the electrodes after the temperature of the submerged arc furnace is stable, collecting a second group of data of high-voltage side voltage, low-voltage compensation current, transformer bushing current, phase-change transformer gear and active power to upload to the data acquisition cabinet 2 in the time period when the height change of the ends of the electrodes is small, and establishing temperature fields at different electrode depths;
s7, collecting the temperatures of 31 point positions of 45 thermocouples in a system connection manner, 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 and system automatic measurement, and verifying at the same time within about 2 months, wherein if the two measurement modes are not greatly 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 database of the industrial personal computer 1, forming the database depth tables after recording for a plurality of times, manually verifying most of data recorded into the database depth tables, and manually confirming when the data are corrected to avoid the system to self-correct the database depth tables to form accumulated errors, so that the system is high in safety and reliability.
Specifically, the parameter verification stage includes the following steps:
s1, collecting the temperatures of 31 point positions of 45 thermocouples in a system connection manner, 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 fields;
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 of electrode tip to obtain position data of the check electrode tip, manually obtaining standard data to form a check depth meter corresponding to the check temperature field, wherein the check depth meter is correct data obtained manually;
and S4, storing the check depth table into a database depth table, or covering an 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, the temperature of different positions of electrodes in a submerged arc furnace is different, and the temperature fields are more approximate under the same parameters, so that the quality and useful power of produced raw materials are more identical, and the temperature fields can more accurately express the positions of the electrodes, therefore, the industrial personal computer establishes the stored temperature field consisting of the temperature information according to the values of the thermocouples 31 measured by each phase of electrodes, in the early stage, field personnel can obtain the depth of the electrodes entering the furnace by means of manual measurement data, then collects high-voltage side voltage, low-voltage compensation current and transformer bushing current which influence the temperature, uses the information as condition information for storing the temperature field, stores the stored temperature field, condition information and the temperature of the electrodes entering the furnace into a 1 for storage, forms a database depth, performs electrode pressure discharge by combining with a manual production mode, generates an original database, automatically measures the temperature field, determines the temperature entering temperature as a furnace temperature chain to be larger, and determines the accuracy of the electrode measuring time of the industrial personal computer by means of adding two automatic measurement data bases, and determines the accuracy of the measured temperature field and the measured time of the industrial personal computer to be higher.
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 that have been 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 (4)
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 device comprises a pressure-discharge meter counter (4) arranged on an electrode holder of the submerged arc furnace, a temperature measuring device (3) arranged on the furnace wall of the submerged arc furnace, a voltage acquisition module (6) for acquiring the voltage on the high-voltage side of the submerged arc furnace, a current compensation acquisition module (5) for acquiring the low-voltage compensation tasting 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 displacement signal of each phase of force cylinder of the submerged arc furnace, a phase transformer gear acquisition module (9) for acquiring the 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 measuring device (3), the voltage acquisition module (6), the pressure-discharge meter counter (4), the current compensation acquisition module (5), the current acquisition module (7), the displacement signal acquisition module (8), the phase transformer gear acquisition module (9) and the power acquisition module (10) are all led to the data acquisition module (7), the data acquisition module (1) is connected with the industrial personal computer (31) through an Ethernet network, and the thermocouple (31) comprises three groups of temperature measuring devices (31), and the 15 thermocouples (31) are arranged in three rows and five rows, three groups of thermocouples (31) correspond to the electrodes, each group of thermocouples (31) are arranged at equal intervals in an interval of 1600mm along the electrode direction, the three groups of thermocouples (31) are arranged at 120 degrees, and the thermocouples (31) are arranged at the nearest positions away from each phase of electrode.
2. The system according to claim 1, wherein the thermocouple (31) is a type K thermocouple.
3. 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.
4. The system for automatically measuring the furnace entering depth of the submerged arc furnace electrode as claimed in claim 1, wherein the database depth table of the industrial personal computer (1) is stored by Microsoft Office Access.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199039A (en) * | 2021-12-24 | 2022-03-18 | 鄂尔多斯市君正能源化工有限公司 | Automatic measuring system and method for submerged arc furnace electrode furnace entering depth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199039A (en) * | 2021-12-24 | 2022-03-18 | 鄂尔多斯市君正能源化工有限公司 | Automatic measuring system and method for submerged arc furnace electrode furnace entering depth |
| CN114199039B (en) * | 2021-12-24 | 2024-08-27 | 鄂尔多斯市君正能源化工有限公司 | Automatic measuring system and method for electrode charging depth of submerged arc furnace |
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