CN109797356B - Intelligent zinc adding device with effective aluminum content control function and control method - Google Patents
Intelligent zinc adding device with effective aluminum content control function and control method Download PDFInfo
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- CN109797356B CN109797356B CN201910095816.XA CN201910095816A CN109797356B CN 109797356 B CN109797356 B CN 109797356B CN 201910095816 A CN201910095816 A CN 201910095816A CN 109797356 B CN109797356 B CN 109797356B
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Abstract
The invention discloses an intelligent zinc adding device with a function of controlling effective aluminum content and a control method, the intelligent zinc adding device comprises a zinc pot, a zinc adding lifting crane, a laser effective aluminum online detection system and a control system, the zinc adding lifting crane is arranged above the zinc pot, a liquid level detection sensor and a zinc liquid temperature sensor are arranged in the zinc pot, the laser effective aluminum online detection system comprises a laser effective aluminum online detection head, the laser effective aluminum online detection head is immersed in zinc liquid, and the control system is respectively connected with the zinc adding lifting crane, the laser effective aluminum online detection system, the liquid level detection sensor and the zinc liquid temperature sensor. The online control of the effective aluminum content in the zinc liquid and the continuity in the zinc adding process are realized, the probability of zinc slag generation in the zinc liquid is greatly reduced, and the production quality of the strip steel is improved; the production safety and the production process stability are improved.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to an intelligent zinc adding device with a function of controlling effective aluminum content and a control method.
Background
The high-quality hot-galvanized sheet is widely applied to industries such as automobiles, household appliances and the like, has large demand and wide prospect, and in the galvanizing production process, the fluctuation of the zinc liquid level in a zinc pot, the change of the zinc bath temperature and the effective aluminum content are closely related to the generation of zinc slag, and the generation of the zinc slag seriously restricts the improvement of the surface quality of the strip steel. Different hot dip galvanized products have different requirements on the zinc bath temperature and the effective aluminum in the zinc bath, and the zinc bath components need to be dynamically adjusted according to different products so as to improve the surface quality of the strip steel.
At present, some cold rolling plants invest automatic zinc adding devices, but the control targets of the automatic zinc adding devices are concentrated on the stability of the liquid level in a zinc pot, and the Chinese invention patent 'a zinc melting device for a hot galvanizing unit' with the publication number of CN102230149B provides a zinc melting device, which realizes closed-loop control on the liquid level change of the zinc liquid level, solves the problem that the temperature fluctuation of the zinc liquid is large due to the difficulty in controlling the manual zinc adding speed, but the suspension of a zinc ingot still needs manual participation; chinese patent publication No. CN102373391B, "an automatic zinc adding device and a control method thereof", provides an automatic zinc adding device and a control method thereof, which can realize full automation of a zinc adding process, including lifting of zinc ingots, but the automation of the zinc adding process, which is considered in the important point, replaces manual operation, and does not consider the factor of stable components of zinc ingots.
Disclosure of Invention
The invention aims to solve the technical problems that aiming at the defects in the prior art, the invention provides the intelligent zinc adding device with the function of controlling the effective aluminum content and the control method thereof, so that the online control of the effective aluminum content in the zinc liquid and the continuity in the zinc adding process are realized, the probability of zinc slag generation in the zinc liquid is greatly reduced, and the production quality of strip steel is improved; the production safety and the production process stability are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an intelligence zinc device with control effective aluminium content function, including the zinc pot, it hangs with the crane to add zinc, the effective aluminium on-line measuring system of laser and control system, it arranges in zinc pot top to add zinc with the crane, be equipped with level detection sensor and zinc liquid temperature sensor in the zinc pot, the effective aluminium on-line measuring system of laser includes the effective aluminium on-line measuring head of laser, the effective aluminium on-line measuring head submergence of laser is in the zinc liquid, control system hangs with adding zinc crane respectively, the effective aluminium on-line measuring system of laser, level detection sensor and zinc liquid temperature sensor are connected.
According to the technical scheme, the zinc-adding lifting crane comprises a movable trolley, an electric hoist crane device and a support, wherein a travelling rail is arranged on the support, the movable trolley is arranged on the travelling rail and can move along the travelling rail, the electric hoist crane device is arranged on the movable trolley, and the electric hoist crane device is used for hoisting zinc ingots.
According to the technical scheme, the motor of the electric hoist lifting device is provided with the encoder, and the encoder is connected with the control system.
According to the technical scheme, the number of the travelling rails is 2, the travelling rails are arranged on the support in parallel, each travelling rail is provided with the moving trolley, and each moving trolley is provided with the electric hoist.
According to the technical scheme, the cross section of the travelling crane rail is I-shaped, and the movable trolley is embedded into the I-shaped travelling crane rail.
According to the technical scheme, the zinc hoisting crane is used for hoisting zinc ingots and adding the zinc ingots into a zinc pot.
According to the technical scheme, the furnace nose is arranged above the zinc pot, and the strip steel enters the zinc pot through the furnace nose.
According to the technical scheme, the number of the liquid level detection sensors is 2, and the liquid level detection sensors are distributed on two sides in the zinc pot;
the number of the zinc liquid temperature sensors is 2, and the sensors are distributed on two sides in the zinc pot.
According to the technical scheme, the limit switch is arranged on the travelling track.
According to the technical scheme, the control system comprises a PLC.
The control method of the intelligent zinc adding device with the function of controlling the effective aluminum content comprises the following steps:
1) the control system respectively acquires the content of effective aluminum, the zinc liquid level height and the zinc liquid temperature in the current zinc bath through the laser effective aluminum on-line detection head, the liquid level detection sensor and the zinc liquid temperature sensor, and simultaneously obtains the production data of the next strip steel through the superior system;
2) the control system calculates the variable quantity of the effective aluminum content after production according to the detected effective aluminum content, the residual length of the steel strip being produced, the coating weight and the operation speed in the zinc pot;
3) the control system calculates the required amount of effective aluminum through production data of the strip steel, performs data analysis by combining the collected production data of the strip steel, the temperature of the zinc liquid, the height of the zinc liquid level and the effective aluminum content in the zinc liquid, and provides a control strategy for maintaining the zinc liquid level constant and achieving the required effective aluminum content range;
4) respectively hanging zinc ingots with high aluminum content and low aluminum content on a specified lifting hook of a zinc-adding lifting crane according to a strategy, driving the zinc ingots to move to the upper part of a zinc pot after the lifting crane is finished, stopping moving after the zinc ingots reach a limit position, adjusting the heights of the zinc ingots according to the strategy, and immersing the zinc ingots into the pot according to the strategy.
According to the technical scheme, the production data of the strip steel in the step 1) comprise the variety and the length of the strip steel, the running speed in a zinc pot, the weight of a coating and the temperature of the strip steel entering the zinc pot;
the control strategy in the step 3) comprises that zinc ingots with different aluminum contents are immersed into the zinc liquid alternately and/or simultaneously, and the descending speed of each zinc ingot is immersed into the zinc liquid.
The invention has the following beneficial effects:
by the intelligent zinc adding device with the function of controlling the effective aluminum content and the control method, the online control of the effective aluminum content in the zinc liquid and the continuity in the zinc adding process are realized, the probability of zinc slag generation in the zinc liquid is greatly reduced, and the production quality of strip steel is improved; in addition, because automatic zinc adding is realized, on one hand, danger caused by working of workers in an area near a zinc pot is avoided, the fluctuation of the zinc liquid level and the fluctuation of the zinc liquid temperature during manual zinc adding are also avoided, the stability of the production process is improved, and the improvement of the surface quality of products is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent zincating apparatus having a function of controlling an effective aluminum content in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a zincification crane according to an embodiment of the invention;
FIG. 3 is a block diagram showing the structure of a control system according to the embodiment of the present invention;
FIG. 4 is a flow chart of a control method of the intelligent zincating apparatus with the function of controlling the effective aluminum content according to the embodiment of the present invention;
in the figure, 1-furnace nose, 2-laser effective aluminum online detection head, 3-liquid level detection sensor, 4-zinc liquid temperature sensor, 5-zinc pot, 6-zinc ingot, 7-zinc lifting crane, 7.1-mobile trolley, 8-travelling rail, 9-zinc liquid, 10-bracket, 11-electric hoist lifting device and 12-motor.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4, the intelligent zincification device with a function of controlling an effective aluminum content in one embodiment of the present invention includes a zinc pot 5, a zincification hoisting crane 7, a laser effective aluminum on-line detection system and a control system, the zincification hoisting crane 7 is disposed above the zinc pot 5, a liquid level detection sensor 3 and a zinc liquid temperature sensor 4 are disposed in the zinc pot 5, the laser effective aluminum on-line detection system includes a laser effective aluminum on-line detection head 2, the laser effective aluminum on-line detection head 2 is immersed in a zinc liquid, and the control system is respectively connected with the zincification hoisting crane 7, the laser effective aluminum on-line detection system, the liquid level detection sensor 3 and the zinc liquid temperature sensor 4.
Further, add zinc crane 7 and include travelling car 7.1, electric block hoist and mount and put 11 and support 10, and support 10 arranges in zinc pot 5 top, is equipped with driving rail 8 on the support 10, and travelling car 7.1 sets up on driving rail 8, can follow driving rail 8 and remove, and electric block hoist and mount is put 11 and is set up on travelling car 7.1, and electric block hoist and mount is put 11 and is used for hoisting zinc ingot 6.
Furthermore, a motor of the electric hoist lifting device is provided with an encoder, and the encoder is connected with the control system.
Further, the number of travelling crane track 8 is 2, and parallel side by side arranges on the support, all is equipped with travelling car 7.1 on every travelling crane track 8, all is equipped with electric block hoist and mount on every travelling car 7.1 and puts.
Furthermore, the section of the travelling crane rail 8 is I-shaped, and the movable trolley 7.1 is embedded in the I-shaped travelling crane rail 8.
Further, a zinc hoisting crane 7 is used for hoisting the zinc ingot 6, and the zinc ingot 6 is added into the zinc pot 5.
Furthermore, a furnace nose 1 is arranged above the zinc pot 5, and the strip steel enters the zinc pot 5 through the furnace nose 1.
Furthermore, the number of the liquid level detection sensors 3 is 2, and the liquid level detection sensors are distributed on two sides in the zinc pot 5;
the number of the zinc liquid temperature sensors 4 is 2, and the sensors are distributed on two sides in the zinc pot 5.
Furthermore, a limit switch is arranged on the travelling rail 8.
Further, the control system includes a PLC.
The control method of the intelligent zinc adding device with the function of controlling the effective aluminum content comprises the following steps:
1) the control system respectively acquires the content of effective aluminum, the zinc liquid level height and the zinc liquid temperature in the current zinc bath through the laser effective aluminum online detection head 2, the liquid level detection sensor 3 and the zinc liquid temperature sensor 4, and simultaneously obtains the production data of the next coiled steel through the superior system;
2) the control system calculates the variable quantity of the effective aluminum content after production according to the detected effective aluminum content, the residual length of the steel strip being produced, the coating weight and the running speed in the zinc pot 5;
3) the control system calculates the required amount of effective aluminum through production data of the strip steel, performs data analysis by combining the collected production data of the strip steel, the temperature of the zinc liquid, the height of the zinc liquid level and the effective aluminum content in the zinc liquid, and provides a control strategy for maintaining the zinc liquid level constant and achieving the required effective aluminum content range;
4) respectively hanging zinc ingots 6 with high aluminum content and low aluminum content on a lifting hook of a zinc lifting crane 7 on a specified travelling crane track 8 according to a strategy, moving a trolley 7.1 to drive the zinc ingots 6 to reach the upper part of a zinc pot 5 after the lifting is finished, stopping moving after the zinc ingots reach a limit position, and adjusting the mode of immersing the zinc ingots into the zinc pot according to the strategy.
Further, the production data of the strip steel in the step 1) comprises the variety and length of the strip steel, the running speed in the zinc pot 5, the coating weight and the temperature of the strip steel entering the zinc pot 5;
the control strategy in the step 3) comprises that zinc ingots 6 with different aluminum contents are immersed into the zinc liquid alternately and/or simultaneously, and the descending speed of each zinc ingot 6 is immersed into the zinc liquid.
In one embodiment of the present invention, as shown in fig. 1 to 3, the intelligent zincating apparatus having a function of controlling an effective aluminum content includes: a set of intelligent zinc adding control system, a zinc pot 5 and a zinc adding lifting crane 7. The intelligent zinc adding control system comprises a control box, a PLC module containing man-machine pictures, a PLC output module, an input module, two liquid level detection sensors 3, two zinc liquid temperature sensors 4 and an effective laser aluminum online detection head 2. One end of the control box is connected with the two sets of zinc-adding hoisting cranes 7, the other end of the control box is connected with the PLC module, the liquid level detection sensors 3 are arranged above the zinc pot 5 and are respectively arranged at two sides of the zinc pot 5 and used for detecting the liquid level height of zinc liquid 9 in the zinc pot 5, and output signals of the liquid level detection sensors are connected with an input module of the PLC; the zinc liquid temperature sensor 4 is used for detecting the temperature of zinc liquid 9 in the zinc pot 5, is positioned at two sides of the zinc pot 5, and the output signal of the zinc liquid temperature sensor is connected with an input module of the PLC; the laser effective aluminum on-line detection head 2 is immersed in a zinc pot and used for on-line monitoring the change of the effective aluminum content in the zinc bath, and the data of the detection system is transmitted to the PLC through a bus and used for data analysis and decision making. The zinc-adding lifting crane 7 is an electric hoist crane device 11 containing a movable trolley 7.1 and comprises a support 10, two parallel travelling rails 8 are arranged on the support, the two travelling rails 8 are used for walking of the movable trolley 7.1, a set of electric hoist crane device 11 is arranged below each movable trolley and used for hoisting a zinc ingot 6, and the zinc ingot 6 is hoisted below the electric hoist 11 through a hook. Two parallel travelling car driving tracks 8 are fixed on a steel structure support 10 beside a zinc pot 5, the section of each track 7 forms an I-shaped mechanism, a travelling car 7.1 is embedded into the I-shaped track to move 8, the travelling car 7.1 is driven by a motor to drive an electric hoist to run on the track, two sides of each track are provided with limit switches for positioning and hoisting zinc ingots and the positions where the zinc ingots enter the zinc pot, and the signal output ends of the limit switches are connected with a PLC module through a control box. Electric block hoist and mount is put 11, can realize the lift of zinc ingot, installs the encoder on the motor 12, and the output signal of encoder passes through the control box and is connected with the PLC module, and signal input part is connected with motor 12.
As shown in fig. 4, when the zincification device is used for zincification:
firstly: the mobile trolley waits for a command in the zinc ingot storage;
the first step is as follows: the input module through PLC gathers the content parameter of effective aluminium in present zinc bath, can obtain the production parameter of present and several coils of winding tape steel next through bus system PLC simultaneously, and production parameter includes: variety, length, running speed in the zinc pot, zinc liquid temperature, coating weight and effective aluminum demand.
The second step is that: whether the comparison currently detects effective aluminum content and demand and satisfy the requirement, if satisfy the requirement, look over the effective aluminum content requirement of next belted steel and predict effective aluminum content variable quantity in the zinc bath, see whether can satisfy the requirement, if still satisfy the requirement and continue to retrieve the effective aluminum content requirement of x +2(x is current belted steel) volume belted steel and predict effective aluminum content variable quantity in the zinc bath, contrast the judgement, mismatch until the effective aluminum content of predicting and demand.
The third step: the intelligent system carries out big data analysis by combining production data (coating thickness, temperature when strip steel is like a zinc pot), zinc liquid temperature, zinc liquid level height and effective aluminum content in the zinc liquid, carries out intelligent decision, gives out a control strategy for maintaining the zinc liquid level constant and reaching the required effective aluminum content range, and the control strategy comprises the steps of immersing zinc ingots with different aluminum contents into the zinc liquid in any mode (alternation, simultaneous and descending speed of each zinc ingot) and displaying the hanging mode of the zinc ingots on an HMI (human machine interface).
The fourth step: according to the hanging scheme displayed on the HMI, zinc ingots with corresponding requirements are hung on the specified lifting hook.
The fifth step: the zinc adding lifting crane runs right above the zinc pot, the movable trolley stops moving after the limit switch detects a signal, and the zinc ingot is placed into the zinc pot according to the scheme.
And a sixth step: returning to the second step to continue the detection of the effective aluminum content in the zinc bath.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (9)
1. A control method adopting an intelligent zinc adding device with a function of controlling effective aluminum content is characterized in that the intelligent zinc adding device with the function of controlling effective aluminum content comprises a zinc pot, a zinc adding lifting crane, a laser effective aluminum online detection system and a control system, wherein the zinc adding lifting crane is arranged above the zinc pot, a liquid level detection sensor and a zinc liquid temperature sensor are arranged in the zinc pot, the laser effective aluminum online detection system comprises a laser effective aluminum online detection head, the laser effective aluminum online detection head is immersed in the zinc pot, and the control system is respectively connected with the zinc adding lifting crane, the laser effective aluminum online detection system, the liquid level detection sensor and the zinc liquid temperature sensor;
the control method comprises the following steps:
1) the control system respectively acquires the content of effective aluminum, the zinc liquid level height and the zinc liquid temperature in the current zinc bath through the laser effective aluminum on-line detection head, the liquid level detection sensor and the zinc liquid temperature sensor, and simultaneously obtains the production data of the next strip steel through the superior system;
2) the control system calculates the variable quantity of the effective aluminum content after production according to the detected effective aluminum content, the residual length of the steel strip being produced, the coating weight and the operation speed in the zinc pot;
3) the control system calculates the required amount of effective aluminum through production data of the strip steel, performs data analysis by combining the collected production data of the strip steel, the temperature of the zinc liquid, the height of the zinc liquid level and the effective aluminum content in the zinc liquid, and provides a control strategy for maintaining the zinc liquid level constant and achieving the required effective aluminum content range;
4) respectively hanging zinc ingots with high aluminum content and low aluminum content on a specified lifting hook of a zinc-adding lifting crane according to a strategy, driving the zinc ingots to move to the upper part of a zinc pot after the lifting crane is finished, stopping moving after the zinc ingots reach a limit position, adjusting the heights of the zinc ingots according to the strategy, and immersing the zinc ingots into the pot according to the strategy.
2. The control method according to claim 1, wherein the zincification hoisting crane comprises a movable trolley, an electric hoist hoisting device and a support, the support is provided with a travelling rail, the movable trolley is arranged on the travelling rail and can move along the travelling rail, the electric hoist hoisting device is arranged on the movable trolley, and the electric hoist hoisting device is used for hoisting the zinc ingot.
3. The control method according to claim 2, wherein an encoder is arranged on the motor of the electric hoist device, and the encoder is connected with the control system.
4. The control method according to claim 2, wherein the number of the travelling rails is 2, the travelling rails are arranged on the support in parallel, each travelling rail is provided with a moving trolley, and each moving trolley is provided with an electric hoist device.
5. The control method as claimed in claim 2, wherein the cross-section of the running rail is i-shaped, and the traveling trolley is embedded in the i-shaped running rail.
6. The control method according to claim 1, wherein the number of the liquid level detection sensors is 2, and the liquid level detection sensors are distributed on two sides in the zinc pot;
the number of the zinc liquid temperature sensors is 2, and the sensors are distributed on two sides in the zinc pot.
7. The control method according to claim 1, wherein a limit switch is provided on the running rail.
8. The control method of claim 1, wherein the control system comprises a PLC.
9. The control method according to claim 1, wherein the production data of the steel strip in the step 1) includes the variety and length of the steel strip, the running speed in the zinc pot, the coating weight and the temperature of the steel strip when entering the zinc pot;
the control strategy in the step 3) comprises that zinc ingots with different aluminum contents are immersed into the zinc liquid alternately and/or simultaneously, and the descending speed of each zinc ingot is immersed into the zinc liquid.
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| CN111882030B (en) * | 2020-06-29 | 2023-12-05 | 武汉钢铁有限公司 | Ingot adding strategy method based on deep reinforcement learning |
| CN113934237B (en) * | 2020-06-29 | 2024-05-10 | 上海梅山钢铁股份有限公司 | Zinc pot liquid level control method |
| CN114182189B (en) * | 2020-09-14 | 2023-10-13 | 上海梅山钢铁股份有限公司 | Automatic zinc melting method for hot-dip aluminum zinc production line |
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| CN205581003U (en) * | 2016-04-15 | 2016-09-14 | 华菱安赛乐米塔尔汽车板有限公司 | Novel zinc liquid composition measurement device |
| CN107365955A (en) * | 2016-05-12 | 2017-11-21 | 鞍钢股份有限公司 | Method for controlling effective aluminum of zinc pot |
| CN208279674U (en) * | 2018-05-31 | 2018-12-25 | 宝钢工程技术集团有限公司 | Automatic zincification ingot device |
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