CN114659373A

CN114659373A - Submerged arc furnace system with automatic electrode lifting function and control method thereof

Info

Publication number: CN114659373A
Application number: CN202210287408.6A
Authority: CN
Inventors: 王鹏
Original assignee: Ningxia Changmaoxiang Smelting Co ltd
Current assignee: Ningxia Changmaoxiang Smelting Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-06-24
Anticipated expiration: 2042-03-22
Also published as: CN114659373B

Abstract

In the submerged arc furnace system with the automatic electrode lifting and the control method thereof, an electrode lifting device can drive an electrode (400) to lift; the monitoring module and the electrode lifting device are electrically connected with the control module, the monitoring module monitors electrical parameters of the electrode (400), a first fitting model between the power consumption of the electrode (400) and the loss of the electrode (400) is stored in the memory and can run on the first processor, the second processor is used for determining the actual power consumption of the electrode (400) according to the electrical parameters, the first processor is used for determining the model loss of the electrode (400) according to the actual power consumption and the first fitting model, and the control unit is used for controlling the electrode lifting device to drive the electrode (400) to descend according to the model loss. The technical scheme can solve the problem that three electrodes are difficult to keep in a 'three-equal' state due to the fact that electrodes of the submerged arc furnace are lifted by mistake in the prior art, and the stability of the three-phase electrodes is damaged.

Description

Submerged arc furnace system with automatic electrode lifting function and control method thereof

Technical Field

The application relates to the technical field of alloy production equipment, in particular to an electrode automatic lifting submerged arc furnace system and a control method thereof.

Background

The submerged arc furnace is also called submerged arc furnace, and when in work, the electrode needs to be inserted into the material layer for a certain depth. The electrode is used as a carrier for converting electric energy into heat energy, when ferrosilicon is smelted in the submerged arc furnace, the lower end of the electrode of the submerged arc furnace discharges electricity to melt raw materials, and currently, a three-phase electrode is commonly adopted. Along with the smelting, the lower end of the electrode is worn, so that the length of the electrode inserted below a material layer is shortened, the conductivity of a molten pool is changed, and the actual position of the three-phase electrode needs to be adjusted timely. In the prior art, the current of three electrodes is respectively detected, when the current is small, the loss condition of the electrodes is shown, at the moment, the electrodes need to be lowered through an electrode lifting device, so that the three electrodes are kept in a state of 'three equal (equal current, equal voltage and equal length inserted under a material layer)', and the furnace can be kept in an optimal smelting state all the time.

However, in the operation process of the submerged arc furnace, the current of the electrode fluctuates frequently due to frequent changes of the distribution state of materials in the furnace, which means that the current of the electrode rises or falls suddenly frequently, and the electrode is controlled to rise or fall by the frequently fluctuating current, so that the electrode lifting device is started by mistake, the electrode is lifted without loss, three electrodes are difficult to keep in a 'three-equal' state, the stability of the three-phase electrode is damaged, and the submerged arc furnace cannot be guaranteed to be in an optimal smelting state all the time.

Disclosure of Invention

Therefore, the submerged arc furnace system with the automatic electrode lifting and the control method thereof are needed to solve the problems that in the prior art, the electrode is controlled to lift according to the detected current of the electrode, the electrode is lifted by mistake, the electrode is lifted without loss, three electrodes are difficult to keep in a 'three-equal' state, the stability of the three-phase electrode is damaged, and the optimal smelting state in the submerged arc furnace can not be guaranteed all the time.

An ore furnace system with an electrode capable of automatically lifting comprises:

the submerged arc furnace comprises an electrode lifting device and an electrode, and the electrode lifting device can drive the electrode to lift;

the control system comprises a monitoring module and a control module, the monitoring module and the electrode lifting device are electrically connected with the control module, the monitoring module monitors electrical parameters of the electrode, and the electrical parameters comprise electrode current, electrifying time and electrode voltage;

the control module comprises a first processor, a second processor, a control unit and a memory, wherein a first fitted model between the power consumption of the electrode and the loss amount of the electrode is stored in the memory and can run on the first processor, the second processor is used for determining the actual power consumption of the electrode according to the electrical parameter, the first processor is used for determining the model loss amount of the electrode according to the actual power consumption and the first fitted model, and the control unit is used for controlling the electrode lifting device to drive the electrode to descend according to the model loss amount.

Preferably, the memory further stores a maximum allowable longitudinal loss length of the electrode, the first processor is further configured to determine a preset loss amount according to the maximum allowable longitudinal loss length, determine a preset power consumption of the electrode according to the preset loss amount and the first fitting model, and control the electrode lifting device to drive the electrode to descend when the actual power consumption is greater than the preset power consumption.

Preferably, the hot stove in ore deposit still includes furnace body, first clamping device and second clamping device, electrode elevating gear includes first elevating gear and second elevating gear, the furnace body includes the stove body and sets up first installation department and second installation department on the stove body, first elevating gear set up in first installation department, and with first clamping device drive links to each other, but first clamping device centre gripping the electrode, just first elevating gear passes through first clamping device drive the electrode goes up and down, second elevating gear set up in the second installation department, and with the second clamping device drive links to each other, but second clamping device centre gripping the electrode, just second elevating gear passes through the second clamping device drive the electrode goes up and down.

Preferably, the first installation part and the second installation part both comprise a first vertical frame, a second vertical frame and a cross frame, two ends of the cross frame are respectively connected with one end of the first vertical frame and one end of the second vertical frame, the other end of the first vertical frame and the other end of the second vertical frame are both connected with the furnace body, the first lifting device comprises a motor and a lead screw, the motor is arranged on the cross frame, the motor is connected with the lead screw, one end of the lead screw departing from the motor penetrates through the cross frame and is in running fit with the furnace body, one end of the first clamping device and one end of the second clamping device are lead screw matching parts in threaded fit with the lead screw, the lead screw matching parts are positioned between the cross frame and the furnace body, the lead screw matching parts are provided with sliding guide protrusions, and two opposite sides of the first vertical frame and the second vertical frame are provided with sliding grooves, the sliding guide protrusion is in sliding fit with the sliding groove.

Preferably, the first lifting device and the second lifting device are both jacking cylinders or linear motors.

A control method of a submerged arc furnace system with an electrode capable of automatically lifting is applied to the submerged arc furnace system, and comprises the following steps:

monitoring the electrical parameters of the electrode, including electrode current, energization duration, and electrode voltage;

determining an actual power consumption of the electrode from the electrical parameter;

determining a first fitted model between the power consumption of the electrode and the amount of loss of the electrode;

determining a model loss amount of the electrode according to the actual power consumption and the first fitting model, wherein the model loss amount comprises a longitudinal loss length;

and under the condition that the longitudinal loss length is larger than a first preset value, controlling the electrode lifting device to drive the electrode to descend for a first preset distance, wherein the first preset distance is equal to the longitudinal loss length.

Preferably, the control method further includes:

determining a maximum allowable longitudinal loss length of the electrode;

determining a preset loss amount according to the maximum allowable longitudinal loss length;

determining preset power consumption of the electrode according to the preset loss amount and the first fitting model;

and under the condition that the actual power consumption is larger than the preset power consumption, controlling the electrode lifting device to drive the electrode to descend for a second preset distance, wherein the second preset distance is equal to the maximum allowable longitudinal loss length.

Preferably, the step of controlling the electrode lifting device to drive the electrode to descend includes:

controlling the second clamping device to open to leave the electrode;

controlling the first lifting device to start so as to drive the first clamping device to descend, wherein the first clamping device drives the electrode to descend;

when the descending distance of the electrode is equal to the first preset distance or the second preset distance, controlling the first lifting device to stop running;

and controlling the second clamping device to clamp the electrode again.

controlling the first lifting device and the second lifting device to be started synchronously so as to drive the first clamping device and the second clamping device to descend synchronously and drive the electrode to descend;

and when the descending distance of the electrode is equal to the first preset distance or the second preset distance, controlling the first lifting device and the second clamping device to stop running synchronously.

Preferably, the control method further includes:

measuring an actual distance between the first clamping device and the second clamping device; controlling the first clamping device to open to leave the electrode under the condition that the actual distance is greater than a third preset distance; controlling the first lifting device to start so as to drive the first clamping device to ascend; when the ascending distance of the first clamping device is equal to the sum of the actual distance and the safety distance, controlling the first lifting device to stop running; controlling the first clamping device to clamp the electrode again; or, controlling the second clamping device to open so as to be away from the electrode; controlling the second lifting device to start so as to drive the second clamping device to ascend; when the ascending distance of the second clamping device is equal to a fourth preset distance, controlling the second lifting device to stop running; controlling the second clamping device to clamp the electrode again; controlling the first clamping device to open to leave the electrode; controlling the first lifting device to start so as to drive the first clamping device to ascend; when the ascending distance of the first clamping device is equal to the fourth preset distance, controlling the first lifting device to stop running; and controlling the first clamping device to clamp the electrode again.

The technical scheme adopted by the application can achieve the following beneficial effects:

the utility model discloses an in the hot stove system in ore deposit of electrode automatic rising, when the hot stove in ore deposit smelts ferrosilicon, the electric parameter of monitoring module real-time supervision electrode, and control module real-time operation is in order to obtain the model consumption of electrode, along with smelting going on, the model consumption of electrode can be bigger and bigger, when the model consumption of electrode is greater than the value of predetermineeing the regulation, the control unit control electrode elevating gear drive electrode descends, with the length that the supplementary electrode lower extreme shortened because of the loss, prevent that the actual power of the hot stove in ore deposit from fluctuating can appear, so that the process of smelting of alloy liquid in the hot stove in ore deposit is stable, alloy liquid homogeneity is better after the smelting, and then guarantee the stability of alloy finished product quality. In the process, through the judgment of the long-time actual power consumption (accumulated power consumption) of the electrode, the lifting of the control electrode is realized, even if the submerged arc furnace is in the operation process, the frequent fluctuation of the current of the electrode is difficult to influence the judgment of the actual power consumption, the long-time actual power consumption stability is good, the fluctuation caused by the frequent sudden rising or sudden reduction of the current of the electrode is avoided, the lifting of the control electrode is realized through the stable actual power consumption, the false starting of an electrode lifting device can be avoided, the electrode is prevented from lifting under the condition of no loss, the three electrodes can be stably kept in a 'three-equal' state, the stability of the three-phase electrode is ensured, and the optimal smelting state in the submerged arc furnace can be ensured all the time.

Therefore, in the submerged arc furnace system disclosed by the application, transient parameters of the monitoring electrodes in the prior art are adjusted to be the long-time actual power consumption (accumulated power consumption) of the monitoring electrodes, the situation that the electrodes are controlled to ascend and descend through frequently fluctuating current is avoided, and the long-time actual power consumption of the electrodes is stable so as to avoid the false start of the electrode lifting device, so that the three electrodes can be stably kept in a 'three-equal' state, and the stability of the three-phase electrodes is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a submerged arc furnace with an automatic lifting structure of double-clamping electrodes disclosed in an embodiment of the present application;

FIG. 2 is a schematic partial structural view of a submerged arc furnace with an automatic lifting structure of double-clamping electrodes disclosed in an embodiment of the present application;

fig. 3 is a schematic view of fig. 2 from another perspective.

Wherein: the furnace body 100, the first installation part 110, the first vertical frame 111, the second vertical frame 112, the cross frame 113, the sliding chute 114, the second installation part 120, the first clamping device 210, the screw rod matching part 211, the sliding guide protrusion 212, the clamper 213, the second clamping device 220, the first lifting device 310, the motor 311, the screw rod 312, the second lifting device 320, the electrode 400, the rotating base 500, the base 510, the supporting roller 511, the turntable 520, the toothed hole 521, the driving source 530, the driving motor 531, the driving gear 532, the air seal assembly 600, the supporting frame 610, the air seal cylinder 620, the sealing plate 630, the slot 640, the feeding port 700, the safety platform 810, the furnace bottom fan 820, the air duct 830 and the safety pool 840.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to fig. 3, an embodiment of the present application discloses an ore furnace system with an electrode capable of automatically lifting, including an ore furnace and a control system, wherein:

the submerged arc furnace comprises an electrode lifting device and an electrode 400, wherein the electrode lifting device can drive the electrode 400 to lift;

the control system comprises a monitoring module and a control module, the monitoring module and the electrode lifting device are electrically connected with the control module, the monitoring module monitors electrical parameters of the electrode 400, and the electrical parameters comprise electrode current, electrifying time and electrode voltage;

the control module comprises a first processor, a second processor, a control unit and a memory, wherein a first fitting model between the power consumption of the electrode 400 and the loss of the electrode 400 is stored in the memory and can run on the first processor, the first fitting model can determine the relation between the power consumption and the loss of the electrode 400, the relation is generally positive correlation, the first fitting model can be formed by fitting a plurality of groups of test data through a computer, the first fitting model can be simply a fitting curve formed by fitting a plurality of groups of test data, any position on the fitting curve corresponds to the power consumption and the loss numerical value of the electrode 400, and the description shows that under the condition that any one of the power consumption and the loss is determined, the other can be obtained through the first fitting model.

The second processor is used for determining the actual power consumption of the electrode 400 according to the electrical parameters, specifically, the actual power consumption of the electrode 400 is obtained by the electrical parameters monitored at each time point in an integral calculation mode, the actual power consumption is also the accumulated power consumption, the first processor is used for determining the model loss of the electrode 400 according to the actual power consumption and the first fitting model, the control unit is used for controlling the electrode lifting device to drive the electrode 400 to descend according to the model loss, the cycle is performed in sequence, and the control module recalculates the actual power consumption of the electrode 400 after controlling the electrode lifting device to drive the electrode 400 to descend each time.

The embodiment of the application discloses an in-ore furnace system of electrode automatic rising, when the ferrosilicon is smelted to the in-ore furnace, the electric parameter of monitoring module real-time supervision electrode 400, and control module real-time operation is in order to obtain the model consumption of electrode 400, along with smelting goes on, the model consumption of electrode 400 can be bigger and bigger, when the model consumption of electrode 400 is greater than predetermined value, the control unit control electrode elevating gear drive electrode 400 descends, with the length that the replenishment electrode 400 lower extreme shortened because of the loss, prevent that the actual power of in-ore furnace from fluctuating can appear, so that the alloy liquid smelting process is stable in the in-ore furnace, alloy liquid homogeneity is better after the smelting, and then guarantee the stability of alloy finished product quality. In the process, the long-time actual power consumption (accumulated power consumption) of the electrode 400 is judged, the lifting of the electrode 400 is controlled, even if the submerged arc furnace is in the operation process, the frequent fluctuation of the current of the electrode 400 is difficult to influence the judgment of the actual power consumption, the long-time actual power consumption stability is good, the fluctuation caused by the frequent sudden rising or sudden reduction of the current of the electrode 400 is avoided, the lifting of the electrode 400 is controlled through the stable actual power consumption, the electrode lifting device can be prevented from being started by mistake, the electrode 400 is prevented from being lifted under the condition of no loss, the three electrodes can be stably kept in a 'three-equal' state, the stability of the three-phase electrode is ensured, and the submerged arc furnace can be always in the optimal smelting state.

Therefore, in the submerged arc furnace system disclosed by the application, transient parameters of the monitoring electrode 400 in the prior art are adjusted to be the actual power consumption (accumulated power consumption) of the monitoring electrode 400 for a long time, and the electrode is prevented from being controlled to ascend and descend through frequently fluctuating current.

Since the first fitting model can determine that the relationship between the power consumption and the loss amount of the electrode 400 is generally a positive correlation, in an alternative embodiment, the memory may further store a maximum allowable longitudinal loss length of the electrode 400, where the maximum allowable longitudinal loss length refers to: when the electrode 400 is used, the maximum allowable deviation distance of the electrode 400 in the longitudinal direction exceeds the maximum allowable deviation distance, and the actual power of the submerged arc furnace fluctuates after the maximum allowable deviation distance exceeds the maximum allowable deviation distance, so that the smelting process of the alloy liquid in the submerged arc furnace is unstable. The first processor can also be used for determining a preset loss amount according to the maximum allowable longitudinal loss length, determining a preset power consumption of the electrode 400 according to the preset loss amount and the first fitting model, and controlling the electrode lifting device to drive the electrode 400 to descend under the condition that the actual power consumption is larger than the preset power consumption. That is, the preset power consumption is determined according to the maximum distance of the allowable deviation of the electrode 400 in the longitudinal direction, that is, the maximum allowable power consumption of the electrode 400 is determined, and when the actual power consumption of the electrode 400 exceeds the maximum allowable power consumption, it is indicated that the loss of the electrode 400 exceeds the maximum allowable longitudinal loss length, and at this time, the electrode 400 needs to be lowered for adjustment.

The embodiment can also avoid controlling the lifting of the electrodes through frequently fluctuating current, and the long-time actual power consumption of the electrodes 400 is stable so as to avoid the false starting of the electrode lifting device, so that the three electrodes can be stably kept in a 'three-equal' state, and the stability of the three-phase electrodes is ensured. And the electrode 400 is controlled to ascend and descend together through the model loss and the preset power consumption, the electrode lifting device can be further prevented from being started by mistake, and the stability of the submerged arc furnace system is improved.

It should be noted that the maximum allowable longitudinal loss length and the maximum allowable power consumption of the electrode 400 are the loss length and the actual power in one adjustment period of the lifting and lowering of the electrode 400, and do not refer to the loss length and the actual power of the electrode 400 in the whole life cycle or the whole smelting period of one smelting in the submerged arc furnace.

As described above, the submerged arc furnace includes the electrode lifting device and the electrode 400, optionally, the submerged arc furnace may further include the furnace body 100, the first clamping device 210 and the second clamping device 220, the electrode lifting device may include the first lifting device 310 and the second lifting device 320, the furnace body 100 includes the furnace body and the first installation portion 110 and the second installation portion 120 disposed on the furnace body, the first lifting device 310 is disposed on the first installation portion 110 and is in driving connection with the first clamping device 210, the first clamping device 210 may clamp the electrode 400, and the first lifting device 310 drives the electrode 400 to lift through the first clamping device 210, the second lifting device 320 is disposed on the second installation portion 120 and is in driving connection with the second clamping device 220, the second clamping device 220 may clamp the electrode 400, and the second lifting device 320 drives the electrode 400 to lift through the second clamping device 220.

As the smelting process proceeds, after the electrode 400 descends for a plurality of times, the descending stroke of the first lifting device 310 and the second lifting device 320 may reach the maximum, so that the first lifting device 310 and the second lifting device 320 cannot drive the electrode 400 to descend continuously, at this time, the second clamping device 220 opens to leave the electrode 400, then the second lifting device 320 drives the second clamping device 220 to ascend, after the second lifting device 320 reaches the minimum of the stroke, the second clamping device 220 re-clamps the electrode 400, then the first clamping device 210 opens to leave the electrode 400, the first lifting device 310 drives the first clamping device 210 to ascend, and after the second lifting device 320 ascends for a certain distance, the first clamping device 210 re-clamps the electrode 400. Through the adjustment of the above process, the first lifting device 310 and the second lifting device 320 can be kept away from the maximum descending stroke, and the electrode 400 can be driven to descend continuously, so that the lifting adjustment of the submerged arc furnace to the electrode 400 is more convenient, and the practicability and operability of the submerged arc furnace are improved.

Further, the hot stove in ore deposit that this application discloses can also include cooling blower and cooling tube, and on cooling blower was fixed in outside frame, cooling blower was connected to cooling tube's one end, and the air distributor is connected to the other end, and the air distributor sets up in the top of first clamping device 210 and second clamping device 220, and the air outlet of air distributor sets up downwards to the wind that makes the air distributor blow off flows towards furnace body 100 is inside. The cooling fan can cool down the alloy liquid on the surface of the electrode 400 and around the electrode 400, the first clamping device 210 and the second clamping device 220, so that the temperature can be quickly lowered, the stable and normal temperature of the electrode 400 is ensured, and the service life of the electrode is prolonged.

The first lifting device 310 can be various, and in an alternative embodiment, the first lifting device 310 can be a jacking cylinder or a linear motor. Of course, the second lifting device 320 may also be a jacking cylinder or a linear motor. The jacking oil cylinder or the linear motor has mature technology, reliable driving, low failure rate, low price and convenient arrangement.

In another alternative embodiment, the first mounting portion 110 includes a first vertical frame 111, a second vertical frame 112, and a cross frame 113, both ends of the cross frame 113 are respectively connected to one end of the first vertical frame 111 and one end of the second vertical frame 112, and the other end of the first vertical frame 111 and the other end of the second vertical frame 112 are both connected to the furnace body, the first elevating device 310 includes a motor 311 and a screw 312, the motor 311 is disposed on the horizontal frame 113, the motor 311 is connected to the screw 312, and one end of the screw rod 312 departing from the motor 311 passes through the cross frame 113 to be matched with the furnace body 100 in a rotating way, one end of the first clamping device 210 is a screw rod matching part 211 which is in threaded matching with the screw rod 312, and the screw rod matching part 211 is positioned between the cross frame 113 and the furnace body, the screw rod matching part 211 is provided with a sliding guide protrusion 212, the two opposite sides of the first vertical frame 111 and the second vertical frame 112 are provided with sliding grooves 114, and the sliding guide protrusion 212 is in sliding fit with the sliding grooves 114.

The embodiment of the present application discloses a specific structure for driving the first clamping device 210 to ascend and descend, that is, a first ascending and descending device 310 is specifically disclosed, and of course, the second ascending and descending device 320 may also adopt the above structure. The descending distance of the electrode 400 can be accurately controlled by adopting the screw 312, the electrode 400 is prevented from descending too much or not to descend, the preset length of the lower end of the electrode 400 shortened due to loss can be accurately supplemented, the electrode 400 discharges more stably to melt raw materials, the actual power of the submerged arc furnace is further prevented from fluctuating, the smelting process of alloy liquid in the submerged arc furnace is more stable, the homogeneity of the smelted alloy liquid is better, and the quality stability of alloy finished products is further ensured.

As described above, the first clamping device 210 and the second clamping device 220 can clamp the electrode 400 and can also be opened to release the electrode 400, specifically, one end of the first clamping device 210 and one end of the second clamping device 220 are both provided with the clamper 213, the clamper 213 is two open-close parts, and the clamper 213 can clamp the electrode 400. The clamping of the electrode 400 is achieved by two opening and closing members.

The air distributor may be a hollow ring, and is located above the holder 213, and a plurality of air outlets are provided on the lower end surface of the hollow ring. In the scheme, cold air surrounds the circumferential outer wall of the electrode 400 and blows air from top to bottom, so that the temperature borne by the outer wall of the electrode 400 is uniform and consistent, the air blown downwards blows air on the liquid level of the alloy liquid and spreads to the periphery, the temperature of the alloy liquid taking the electrode 400 as the center is blown away and spreads to the periphery, the temperature of the alloy liquid around the electrode 400 is accelerated in a targeted manner, the end part of the electrode 400 is rapidly cooled, and abnormal burning loss of the electrode 400 is avoided.

Further, the submerged arc furnace disclosed by the application can further comprise a rotary base 500, the rotary base 500 is arranged at the bottom of the furnace body, the rotary base 500 comprises a base 510, a turntable 520 and a plurality of driving sources 530, the base 510 is fixed on a foundation, a plurality of carrier rollers 511 are arranged on the upper surface of the base 510, the carrier rollers 511 are in rolling fit with the base 510, the upper end surfaces of the carrier rollers 511 are higher than the upper surface of the base 510, the turntable 520 is a circular disc body, the bottom of the furnace body is connected with the turntable 520, the turntable 520 is arranged above the base 510, the bottom of the turntable 520 is in rolling fit with the carrier rollers 511, a plurality of tooth holes 521 are formed in the outer circumferential wall of the turntable 520, the tooth holes 521 are uniformly distributed on the outer wall of the turntable 520 at equal intervals, the driving sources 530 comprise driving motors 531 and driving gears 532, the driving motors 531 are fixedly arranged, the driving gears 532 are in transmission connection with the driving motors 531, and the driving gears 532 are in meshing connection with the tooth holes 521, the device is used for driving the rotary table 520 to rotate, so that the furnace body 100 is driven to rotate, the homogeneity of the alloy liquid in the submerged arc furnace is better, the stability of the smelting process of the alloy liquid in the submerged arc furnace can be ensured, the homogeneity of the alloy liquid after smelting is better, and the stability of the quality of alloy finished products is further ensured.

Further, the hot stove in ore deposit that this application discloses can also include stove bottom air-cooled subassembly, stove bottom air-cooled subassembly includes safe platform 810, stove bottom fan 820 and wind channel 830, safe platform 810 is the platform that is higher than rotating base 500, and surround rotating base 500 setting, the gap has between safe platform 810 and the rotating base 500, in order to form safe pond 840, stove bottom fan 820 sets up in the safe platform 810 outside, the one end and the stove bottom fan 820 of wind channel 830 are connected, the other end passes safe platform 810, be connected with safe pond 840, the height of wind channel 830 tip and the high parallel and level of carousel 520, carousel 520 is the ring spare that is fixed in the stove body, the inner wall and the outer wall setting that the perforation 521 link up carousel 520.

The cold wind that stove bottom fan 820 blew out passes through wind channel 830 and gets into safe pond 840, and just to perforation 521, and perforation 521 around carousel 520 is link up, and the cold wind that blows in can wear out along other perforation 521, and safe pond 840 encircles carousel 520 to form the cold wind stream that upwards spreads from the stove body bottom, or link up in the cold wind stream of stove body bottom, thereby realize the forced air cooling to furnace body 100 bottom, stove outer covering. The cool air can be circulated regardless of the rotation of the turntable 520 at the bottom of the furnace body 100. The tooth holes 521 of the turntable 520 can be used as a rotation driving part of the furnace body 100 or an air cooling part, thereby achieving two purposes.

At the same time. The inside alloy liquid of smelting of furnace body 100 is high temperature liquid, in case leak, can stretch the flow to all around, causes very big injury to people or thing around, so set up safe pond 840, safe pond 840 is for surrounding furnace body 100 space all around, and its bottom is darker, has great accommodation space, even appear leaking, high temperature liquid can flow into in the safe pond 840 and be collected, can not stretch everywhere. The safety pool 840 can not only enable cold air to form cold air flow which is diffused upwards from the bottom of the furnace body, but also collect leaked high-temperature liquid, thereby achieving two purposes.

In an optional embodiment, the submerged arc furnace disclosed in the present application may further include a gas seal assembly 600, at least one feeding port 700 is formed on a side wall of the furnace body, the gas seal assembly 600 is disposed at the feeding port 700, the gas seal assembly 600 includes a support frame 610, a gas seal cylinder 620 and a sealing plate 630, a slot 640 is disposed on the side wall around the feeding port 700, the support frame 610 is erected above the feeding port 700, a cylinder seat of the gas seal cylinder 620 is fixed on the support frame 610, a piston end of the gas seal cylinder 620 is connected to the sealing plate 630, and the sealing plate 630 is inserted into the slot 640.

Due to the arrangement of the feeding port 700, during feeding, the feeding chute is in lap joint with the feeding port 700, so that the height of the chute is reduced, the height of the material entering the alloy liquid is reduced, the splashing of the alloy liquid is reduced, the abnormal disturbance of the alloy liquid is slowed down, and the impact of the alloy liquid and the material on the electrode 400 is avoided. Shrouding 630 pegs graft from top to bottom, and gas seal cylinder 620 compresses tightly shrouding 630 from the top, avoids shrouding 630 shutoff material loading mouth 700 not tight problem.

Further, the feeding ports 700 may be three openings uniformly distributed around the furnace body, and the heights of the three feeding ports 700 are sequentially decreased. For example, the heights of the bottoms of the three feeding ports 700 are respectively 0.5m, 0.8 m and 1.2 m away from the opening of the furnace body 100, so that the heights of the chutes lapped with the feeding ports 700 are different, when materials in the furnace body 100 are less or feeding is started, the bottommost feeding port 700 can be selected for feeding, the falling height difference of the materials is reduced, mechanical damage to the furnace body 100 is reduced, and when alloy liquid in the furnace body 100 is higher, namely during smelting and feeding, different feeding ports 700 can be selected for feeding according to the liquid level height, so that liquid level splashing caused by too large height difference or the materials are too close to the liquid level is avoided.

Further, the furnace body can be a nonagon furnace body formed by connecting nine planes side by side. When the furnace body 100 integrally rotates, an included angle is formed between two adjacent plane side walls, the included angle can form stirring power for the alloy liquid in the furnace body 100, the regular flowing of the liquid along the inner wall of the furnace body 100 is promoted, so that the homogeneity of the alloy liquid in the submerged arc furnace is better, the stability of the smelting process of the alloy liquid in the submerged arc furnace can be ensured, and the stability of the quality of alloy finished products is further ensured.

The embodiment of the application discloses a control method of a submerged arc furnace system with an electrode capable of automatically lifting, the submerged arc furnace system is the submerged arc furnace system in the embodiment, and the control method comprises the following steps:

s110, monitoring electrical parameters of the electrode 400, wherein the electrical parameters comprise electrode current, electrifying time and electrode voltage;

s120, determining the actual power consumption of the electrode 400 according to the electrical parameters;

s130, determining a first fitting model between the power consumption of the electrode 400 and the loss amount of the electrode 400;

s140, determining the model loss of the electrode 400 according to the actual power consumption and the first fitting model, wherein the model loss comprises a longitudinal loss length;

s150, controlling the electrode lifting device to drive the electrode 400 to descend by a first preset distance when the longitudinal loss length is greater than the first preset value, where the first preset distance is equal to the longitudinal loss length.

In the control method of the submerged arc furnace system with the automatic electrode lifting, when the submerged arc furnace smelts ferrosilicon, firstly, the electric parameters of the electrode 400 are monitored in real time, then, the actual power consumption of the electrode 400 is determined according to the electric parameters, then, a first fitting model between the power consumption of the electrode 400 and the loss amount of the electrode 400 is determined, then, the model loss amount of the electrode 400 is determined according to the actual power consumption and the first fitting model, the model loss amount comprises the longitudinal loss length, under the condition that the longitudinal loss length is larger than the first preset value, the electrode lifting device is controlled to drive the electrode 400 to descend by a first preset distance, and the first preset distance is equal to the longitudinal loss length.

Along with the smelting, the model loss of the electrode 400 is larger and larger, when the model loss of the electrode 400 is larger than a preset specified value, the electrode lifting device is controlled to drive the electrode 400 to descend so as to supplement the length of the lower end of the electrode 400 shortened due to loss, and the actual power of the submerged arc furnace is prevented from fluctuating, so that the smelting process of the alloy liquid in the submerged arc furnace is stable, the homogeneity of the alloy liquid after smelting is better, and the stability of the quality of an alloy finished product is further ensured. In the process, the long-time actual power consumption (accumulated power consumption) of the electrode 400 is judged, the lifting of the electrode 400 is controlled, even if the submerged arc furnace is in the operation process, the frequent fluctuation of the current of the electrode 400 is difficult to influence the judgment of the actual power consumption, the long-time actual power consumption stability is good, the fluctuation caused by the frequent sudden rising or sudden reduction of the current of the electrode 400 is avoided, the lifting of the electrode 400 is controlled through the stable actual power consumption, the electrode lifting device can be prevented from being started by mistake, the electrode 400 is prevented from being lifted under the condition of no loss, the three electrodes can be stably kept in a 'three-equal' state, the stability of the three-phase electrode is ensured, and the submerged arc furnace can be always in the optimal smelting state.

Since the first fitting model can determine that the relationship between the power consumption and the loss amount of the electrode 400 is generally a positive correlation, in an alternative embodiment, the control method may further include:

s210, determining the maximum allowable longitudinal loss length of the electrode 400;

s220, determining a preset loss amount according to the maximum allowable longitudinal loss length;

s230, determining the preset power consumption of the electrode 400 according to the preset loss and the first fitting model;

and S240, controlling the electrode lifting device to drive the electrode 400 to descend for a second preset distance under the condition that the actual power consumption is larger than the preset power consumption, wherein the second preset distance is equal to the maximum allowable longitudinal loss length.

In this embodiment, the maximum allowable longitudinal loss length of the electrode 400 is determined, the preset loss amount is determined according to the maximum allowable longitudinal loss length, the preset power consumption of the electrode 400 is determined according to the preset loss amount and the first fitting model, and the electrode lifting device is controlled to drive the electrode 400 to descend when the actual power consumption is greater than the preset power consumption. That is, the preset power consumption is determined according to the maximum distance of the allowable deviation of the electrode 400 in the longitudinal direction, that is, the maximum allowable power consumption of the electrode 400 is determined, and when the actual power consumption of the electrode 400 exceeds the maximum allowable power consumption, it is indicated that the loss of the electrode 400 exceeds the maximum allowable longitudinal loss length, and at this time, the electrode 400 needs to be lowered for adjustment.

The embodiment can also avoid controlling the lifting of the electrodes through frequently fluctuating current, and the long-time actual power consumption of the electrodes 400 is stable so as to avoid the false starting of the electrode lifting device, so that the three electrodes can be stably kept in a 'three-equal' state, and the stability of the three-phase electrodes is ensured. And the electrode 400 is controlled to ascend and descend together through the model loss and the preset power consumption, so that the electrode lifting device can be further prevented from being started by mistake, and the stability of the submerged arc furnace system is improved.

Alternatively, the controlling the electrode elevating means to drive the electrode 400 to descend may include:

s310, controlling the second clamping device 220 to open so as to be away from the electrode 400;

s320, controlling the first lifting device 310 to start to drive the first clamping device 210 to descend, and the first clamping device 210 drives the electrode 400 to descend;

s330, when the descending distance of the electrode 400 is equal to a first preset distance or a second preset distance, controlling the first lifting device 310 to stop running;

and S340, controlling the second clamping device 220 to clamp the electrode 400 again.

In this embodiment, the second lifting device 320 does not need to be started to drive the second clamping device 220 to descend, only needs the first lifting device 310 to be started to drive the first clamping device 210 to descend, and the first clamping device 210 drives the electrode 400 to descend, so that the control method is simple and reliable. In a specific control process, firstly, the second clamping device 220 is opened and leaves the electrode 400, at this time, the first clamping device 210 continues to clamp the electrode 400, the first lifting device 310 is started to drive the first clamping device 210 to descend, the first clamping device 210 continues to clamp the electrode 400 at this time, so that the electrode 400 is driven to descend and descend by a preset length to supplement the preset length shortened by loss at the lower end of the electrode 400, after the electrode 400 descends, the second clamping device 220 clamps the electrode 400 again, so that the electrode 400 stably discharges and melts raw materials, the actual power of the submerged arc furnace is prevented from fluctuating, the smelting process of the alloy liquid in the submerged arc furnace is stable, the homogeneity of the alloy liquid after smelting is good, and the quality stability of alloy finished products is further ensured.

After the electrode 400 is lowered for multiple times as smelting proceeds, the lowering stroke of the first lifting device 310 may reach the maximum, so that the first lifting device 310 and the second lifting device 320 cannot drive the electrode 400 to descend continuously. Further, the control method may further include:

s410, measuring the actual distance between the first clamping device 210 and the second clamping device 220;

s420, controlling the first clamping device 210 to open to be away from the electrode 400 under the condition that the actual distance is greater than a third preset distance;

s430, controlling the first lifting device 310 to start to drive the first clamping device 210 to ascend;

s440, when the ascending distance of the first clamping device 210 is equal to the sum of the actual distance and the safety distance, controlling the first lifting device 310 to stop running;

s450, controlling the first clamping device 210 to clamp the electrode 400 again.

Through the adjustment of the process, the first lifting device 310 is away from the maximum descending stroke, so that the first lifting device 310 can continuously drive the electrode 400 to descend, the lifting adjustment of the submerged arc furnace on the electrode 400 is more convenient, and the practicability and operability of the control method are improved.

As described above, when the lower end of the electrode 400 is shortened by the wear beyond the predetermined length, the second clamping device 220 needs to be opened to be away from the electrode 400, and the operation process is complicated. To simplify the above process, in an alternative embodiment, the step of controlling the electrode lifting device to drive the electrode 400 to descend may include:

s510, controlling the first lifting device 310 and the second lifting device 320 to start synchronously, so as to drive the first clamping device 210 and the second clamping device 220 to descend synchronously and drive the electrode 400 to descend;

and S520, controlling the first lifting device 310 and the second clamping device 220 to stop running synchronously when the descending distance of the electrode 400 is equal to the first preset distance or the second preset distance.

In the above process, the second clamping device 220 does not need to be opened to leave the electrode 400, so that the descending operation process of the electrode 400 is simplified, and the damage to the electrode 400 caused by a few dislocation when the second clamping device 220 clamps the electrode 400 again can be avoided.

As the electrode 400 descends for multiple times during smelting, the descending stroke of the first lifting device 310 may reach the maximum, so that the first lifting device 310 and the second lifting device 320 cannot drive the electrode 400 to descend continuously. Further, the control method may further include:

s610, the device 220 is opened to leave the electrode 400;

s620, controlling the second lifting device 320 to start so as to drive the second clamping device 220 to ascend;

s630, when the ascending distance of the second clamping device 220 is equal to a fourth preset distance, controlling the second lifting device 320 to stop running;

s640, controlling the second clamping device 220 to clamp the electrode 400 again;

s650, controlling the first clamping device 210 to open so as to be away from the electrode 400;

s660, controlling the first lifting device 310 to start to drive the first clamping device 210 to ascend;

s670, when the ascending distance of the first clamping device 210 is equal to a fourth preset distance, controlling the first lifting device 310 to stop running;

and S680, controlling the first clamping device 210 to clamp the electrode 400 again.

Through the adjustment of the above process, the first lifting device 310 and the second lifting device 320 leave the maximum descending stroke, so that the first lifting device 310 and the second lifting device 320 can continuously drive the electrode 400 to descend, thereby the ascending and descending adjustment of the submerged arc furnace to the electrode 400 is more convenient, and the practicability and operability of the control method are improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a hot stove system in ore deposit of electrode automatic rising which characterized in that includes:

the submerged arc furnace comprises an electrode lifting device and an electrode (400), wherein the electrode lifting device can drive the electrode (400) to lift;

the control system comprises a monitoring module and a control module, the monitoring module and the electrode lifting device are electrically connected with the control module, the monitoring module monitors electrical parameters of the electrode (400), and the electrical parameters comprise electrode current, electrifying time and electrode voltage;

the control module comprises a first processor, a second processor, a control unit and a memory, wherein a first fitting model between the power consumption of the electrode (400) and the loss amount of the electrode (400) is stored in the memory and can be operated on the first processor, the second processor is used for determining the actual power consumption of the electrode (400) according to the electrical parameter, the first processor is used for determining the model loss amount of the electrode (400) according to the actual power consumption and the first fitting model, and the control unit is used for controlling the electrode lifting device to drive the electrode (400) to descend according to the model loss amount.

2. The submerged arc furnace system with the automatic electrode lifting function as claimed in claim 1, wherein the memory further stores a maximum allowable longitudinal loss length of the electrode (400), the first processor is further configured to determine a preset loss amount according to the maximum allowable longitudinal loss length, and determine a preset power consumption of the electrode (400) according to the preset loss amount and the first fitting model, and the control unit is configured to control the electrode lifting device to drive the electrode (400) to descend if the actual power consumption is greater than the preset power consumption.

3. The submerged arc furnace system with the automatic electrode lifting function according to claim 1, wherein the submerged arc furnace further comprises a furnace body (100), a first clamping device (210) and a second clamping device (220), the electrode lifting device comprises a first lifting device (310) and a second lifting device (320), the furnace body (100) comprises a furnace body and a first installation part (110) and a second installation part (120) which are arranged on the furnace body, the first lifting device (310) is arranged on the first installation part (110) and is in driving connection with the first clamping device (210), the first clamping device (210) can clamp the electrode (400), the first lifting device (310) drives the electrode (400) to lift through the first clamping device (210), and the second lifting device (320) is arranged on the second installation part (120), and the second clamping device (220) is connected with the second clamping device (220) in a driving way, the second clamping device (220) can clamp the electrode (400), and the second lifting device (320) drives the electrode (400) to lift through the second clamping device (220).

4. The submerged arc furnace system with the automatic electrode lifting function as claimed in claim 3, wherein the first installation part (110) and the second installation part (120) each comprise a first vertical frame (111), a second vertical frame (112) and a transverse frame (113), two ends of the transverse frame (113) are respectively connected with one end of the first vertical frame (111) and one end of the second vertical frame (112), the other end of the first vertical frame (111) and the other end of the second vertical frame (112) are both connected with the furnace body, the first lifting device (310) comprises a motor (311) and a lead screw (312), the motor (311) is arranged on the transverse frame (113), the motor (311) is connected with the lead screw (312), and one end of the lead screw (312) departing from the motor (311) penetrates through the transverse frame (113) to be in rotating fit with the furnace body (100), the one end of first clamping device (210) with the one end of second clamping device (220) be with lead screw (312) screw-thread fit's lead screw cooperation portion (211), just lead screw cooperation portion (211) are located crossbearer (113) with between the stove body, lead screw cooperation portion (211) are provided with the protruding (212) of slide guide, first erect frame (111) with spout (114) have been seted up to the second erect the both sides that frame (112) is relative, the protruding (212) of slide guide with spout (114) sliding fit.

5. The submerged arc furnace system according to claim 3, wherein the first lifting device (310) and the second lifting device (320) are both a jacking cylinder or a linear motor.

6. A control method of a submerged arc furnace system with an automatic electrode lifting function, which is applied to the submerged arc furnace system as claimed in any one of claims 3 to 5, and comprises the following steps:

monitoring the electrical parameters of the electrode (400), including electrode current, energization duration, and electrode voltage;

determining an actual power consumption of the electrode (400) from the electrical parameter;

determining a first fitted model between the power consumption of the electrode (400) and the amount of loss of the electrode (400);

determining a model loss amount of the electrode (400) from the actual power consumption and the first fitted model, the model loss amount comprising a longitudinal loss length;

and under the condition that the longitudinal loss length is larger than a first preset value, controlling the electrode lifting device to drive the electrode (400) to descend for a first preset distance, wherein the first preset distance is equal to the longitudinal loss length.

7. The control method according to claim 6, characterized by further comprising:

determining a maximum allowable longitudinal loss length of the electrode (400);

determining a preset power consumption of the electrode (400) according to the preset loss amount and the first fitting model;

and under the condition that the actual power consumption is larger than the preset power consumption, controlling the electrode lifting device to drive the electrode (400) to descend for a second preset distance, wherein the second preset distance is equal to the maximum allowable longitudinal loss length.

8. The control method according to claim 7, wherein the step of controlling the electrode lifting device to drive the electrode (400) to descend comprises:

controlling the second clamping device (220) to open to leave the electrode (400);

controlling the first lifting device (310) to start so as to drive the first clamping device (210) to descend, wherein the first clamping device (210) drives the electrode (400) to descend;

when the descending distance of the electrode (400) is equal to the first preset distance or the second preset distance, controlling the first lifting device (310) to stop running;

controlling the second clamping device (220) to re-clamp the electrode (400).

9. The control method according to claim 7, wherein the step of controlling the electrode lifting device to drive the electrode (400) to descend comprises:

controlling the first lifting device (310) and the second lifting device (320) to be started synchronously so as to drive the first clamping device (210) and the second clamping device (220) to descend synchronously and drive the electrode (400) to descend;

and when the descending distance of the electrode (400) is equal to the first preset distance or the second preset distance, controlling the first lifting device (310) and the second clamping device (220) to stop running synchronously.

10. The control method according to claim 6, characterized by further comprising:

measuring an actual distance between the first clamping device (210) and the second clamping device (220); -in case the actual distance is greater than a third preset distance, controlling the first gripping means (210) to open to leave the electrode (400); controlling the first lifting device (310) to start to drive the first clamping device (210) to ascend; when the ascending distance of the first clamping device (210) is equal to the actual distance minus a safety distance, controlling the first lifting device (310) to stop running; controlling the first clamping device (210) to re-clamp the electrode (400); or the like, or, alternatively,

controlling the second gripping means (220) to open away from the electrode (400); controlling the second lifting device (320) to start so as to drive the second clamping device (220) to ascend; when the ascending distance of the second clamping device (220) is equal to a fourth preset distance, controlling the second lifting device (320) to stop running; -controlling the second clamping device (220) to re-clamp the electrode (400); controlling the first clamping device (210) to open to leave the electrode (400); controlling the first lifting device (310) to start to drive the first clamping device (210) to ascend; when the ascending distance of the first clamping device (210) is equal to the fourth preset distance, controlling the first lifting device (310) to stop running; controlling the first clamping device (210) to re-clamp the electrode (400).