CN106011941A - Control method for aluminum electrolysis crown block stock bin material level online monitoring and fault alarm system - Google Patents
Control method for aluminum electrolysis crown block stock bin material level online monitoring and fault alarm system Download PDFInfo
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- CN106011941A CN106011941A CN201610624731.2A CN201610624731A CN106011941A CN 106011941 A CN106011941 A CN 106011941A CN 201610624731 A CN201610624731 A CN 201610624731A CN 106011941 A CN106011941 A CN 106011941A
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- 239000000463 material Substances 0.000 title claims abstract description 66
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 32
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000005303 weighing Methods 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 230000000007 visual effect Effects 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 54
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003181 co-melting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/14—Devices for feeding or crust breaking
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Relating to the field of aluminum electrolysis equipment, the invention discloses a control method for an aluminum electrolysis crown block stock bin material level online monitoring and fault alarm system. The method consist of: judging the stock bin charging and motion state, if no charging behavior occur and the stock bin is at a stationary state, letting an MCU module communicate with a slot control machine to obtain the information that whether an aluminum electrolysis cell needs charging; if the aluminum electrolysis cell needs charging at the moment, carrying out charging and calculating the charging speed; and if the charging speed is normal, the stock bin is fault-free, if the charging speed is too slow, blocking can occur to the stock bin or fault can occur to the equipment, starting an audible and visual alarm. The method provided by the invention utilizes a weighing sensor to collect the stock bin quality data and calculates the raw material charging speed, then judges whether a discharge port is blocked, and gives an audible and visual alarm and requires overhauling. The method provided by the invention can achieve real-time online monitoring and control of the stock bin material level, at the same time detects stock bin blocking information in the first time so as to avoid blocking worsening. According to the invention, the structure and operation steps are simple, thus being easy to implement.
Description
Technical Field
The invention relates to the field of aluminum electrolysis equipment, in particular to a control method of an aluminum electrolysis crown block bin material level online monitoring and fault alarm system.
Background
In the field of aluminum electrolysis, the aluminum electrolysis raw material is added by conveying the raw material in a material tower storage tank into an electrolytic cell of an electrolysis workshop through a concentrated phase or super concentrated phase conveying pipeline; in the smelting process, anode covering material, auxiliary material and supplementary material are added, and the part of the material is conveyed to a storage bin of an electrolysis crown block through a single concentrated phase or super concentrated phase pipeline, and then the crown block adds the covering material into an electrolytic bath. The feed bin generally has feed inlet and discharge gate, and the raw materials gets into the feed bin through pipeline department feed inlet, and when throwing the material, solenoid valve control discharge gate opens, and the raw materials is transmitted for the electrolysis trough reaction through the discharge gate.
The material is thrown to the overhead traveling crane and the material tower storage tank is directly thrown the material, and two aluminium electroloysis raw materials are the same, and the raw materials mainly include: alumina, fluoride, chlorate etc. two main difference lies in the temperature, and the overhead traveling crane throws the material general temperature lower, and the feed liquid solidifies into the granule easily and leads to the discharge gate to block, influences the feed bin ejection of compact.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a control method for a material level online monitoring and fault alarm system of a material bin of an aluminum electrolysis crown block, which aims to monitor the material level state in real time, detect the discharging speed of the material bin, judge whether the discharging speed meets the requirements, and send out an audible and visual alarm to remind the relevant personnel to maintain when the discharging port of the material bin is blocked. The method and the device can detect the blocking information of the storage bin at the first time, and avoid the situation deterioration caused by the aggravation of the blocking.
In order to achieve the above object, the present invention provides a method for controlling an aluminum electrolysis crown block bin material level online monitoring and fault alarm system, wherein the crown block bin fault alarm system comprises: the device comprises a bin for containing raw materials, an overhead travelling crane for moving the bin and an electronic control module for controlling the bin;
the electronic control module includes: the device comprises a weighing sensor, a motion state sensor, an MCU module and an electromagnetic valve; the weighing sensor is electrically connected with the MCU module; the motion state sensor is electrically connected with the MCU module; the electromagnetic valve is electrically connected with the MCU module; the MCU module is in communication connection with the cell controller;
the overhead traveling crane is provided with a supporting seat, the weighing sensor is provided with an upper cushion plate and a lower cushion plate, and the lower cushion plate of the weighing sensor is fastened with the supporting seat; the upper base plate of the weighing sensor is fastened with the stock bin; the electromagnetic valve is arranged at the discharge port of the storage bin and used for controlling the opening or closing of the discharge port;
the method comprises the following steps:
step 1: judging whether a storage bin is in a charging state, and if the storage bin is in the charging state, keeping the electromagnetic valve of the discharge port closed; if the stock bin is in a non-charging state, executing the step 2;
step 2: judging whether the stock bin is in a motion state, if so, keeping the electromagnetic valve of the discharge port closed, and executing the step 3; if the stock bin is in a static state, executing the step 3;
and step 3: when the overhead traveling crane stock bin is fed, the weighing sensor collects the mass data of the overhead traveling crane stock bin in real time, the electromagnetic valve of the discharge port is opened, the feeding speed V is calculated, and the step 4 is executed;
and 4, step 4: judging whether the feeding speed V is normal or not; if the feeding speed is normal, closing the electromagnetic valve of the discharge hole after the feeding is finished, and executing the step 5; otherwise, closing the electromagnetic valve of the discharge hole, opening an audible and visual alarm, and moving the overhead traveling crane;
and 5: the weighing sensor collects the mass of the stock bin in real time, and if the mass of the stock bin is greater than or equal to a lower limit value, the step 3 is executed; if the mass of the storage bin is smaller than the lower limit value, the overhead travelling crane moves the storage bin to a feeding area for feeding, a weighing sensor collects the mass of the storage bin in real time, if the mass of the storage bin is larger than the upper limit value, the overhead travelling crane finishes feeding, and step 3 is executed.
In the technical scheme, the electronic control module is normally started or starts to execute the step 1 after the downtime is restarted, and the steps 1 and 2 mainly detect the current equipment running state after the downtime is finished, so that equipment running errors are avoided. In the technical scheme, whether the discharge port is blocked or not is tested when the material is fed into the electrolytic cell, namely the online test is carried out, and the discharge port blocking test experiment is carried out without arranging additional time or space. In this technical scheme, utilize weighing sensor to gather feed bin mass data, calculate and obtain the raw materials and throw material speed, and then judge whether the discharge gate takes place to block to carry out audible-visual alarm and send the maintenance, this scheme can detect feed bin blocking information at the very first time, avoids blocking the aggravation and causes the condition to worsen.
Further, the feeding speed calculation method comprises the following steps: obtaining the latest n times of quality data M of the material biniCalculating a feed rate V, saidI is more than or equal to 1 and less than or equal to n, n is more than or equal to 3, T is the sampling period of the weighing sensor, and T is the time from the last time that the antimagnetic sensor acquires the mass data of the storage bin to the current time.
In the technical scheme, the weighing sensor is used for weighing the storage bin periodically, the mass data obtained by the weighing sensor has a certain time delay compared with the real data of the storage bin, and the MCU module is used for processing the mass data and converting the mass data into a feeding speed; the feeding calculation formula provided in the technical scheme is based on that the feeding speed changes linearly once in a short time, and the feeding speed is obtained through calculation, so that the feeding speed calculation precision is improved, and the system reliability is improved.
Further, in step 5, when the quality of the storage bin is the lower limit value, the residual amount of the raw materials is at least the single feeding amount of the aluminum electrolytic cell.
The material is fed into the electrolytic cell at certain intervals when the aluminum electrolytic cell is fed, and the fluctuation of the feeding amount is small each time. In the technical scheme, if the residual amount of the raw materials is judged to be less than the single feeding amount of the aluminum electrolytic cell, the feeding task is not arranged for the bin and the bin needs to be fed.
Further, the motion state sensor is a gyroscope or an accelerometer. In the technical scheme, the motion state is mainly to judge whether the crown block is in a static state, and the motion state can be judged by adopting a corresponding sensor.
Further, in step 4, the method for determining whether the feeding speed V is normal includes: setting a lower limit value V of a feeding speed VTHIf the feeding speed V is more than or equal to VTHAnd the feeding speed is normal.
In the technical scheme, the lower limit value of the feeding speed is set to judge whether the feeding speed is normal or not, and the feeding speed is judged to be normal when the feeding speed is higher than the lower limit value. The alpha value can be determined manually according to the actual process and the shape of the discharge hole. Generally speaking, under the same parameter, the higher the setting of the alpha value is, the easier the discharge port can report the fault, the advantage is that the fault is found earlier, and the disadvantage is that the fault is easy to report by mistake; the lower the alpha value is set, the larger the fault tolerance reported by the discharge port is, and the fault is not easy to report by mistake, and certainly the fault is found later.
Further, the motion state sensor and the MCU module are installed on the stock bin or the crown block supporting seat or the upper backing plate or the lower backing plate.
Further, the motion state sensor and the MCU module are installed between the upper pad and the lower pad.
The weighing sensor needs to be installed between the crown block supporting seat and the storage bin, and the proper position can be selected independently by installing the motion state sensor and the MCU module. Generally, the installation position of the motion state sensor needs to be consistent with the motion state of the storage bin, such as the motion state sensor is installed on the storage bin or a crane supporting seat or an upper backing plate or a lower backing plate; in the preferred embodiment, the motion state sensor and the MCU module are arranged in the upper backing plate and the lower backing plate, which is beneficial to realizing the integrated design of the electronic control module and is convenient to install.
Further, the overhead crane bin fault alarm system is also provided with a display, the display is electrically connected with the MCU module, and the MCU module sends data to the display for display; the control method also comprises the step of displaying the material level of the stock bin; the MCU module receives weighing sensor data and acquires the bin material level, and the display displays the overhead traveling crane bin material level.
The technical scheme realizes real-time material level display, and is convenient for users to visually obtain the material level of the overhead travelling crane material bin; meanwhile, in the technical scheme, the weighing mode is adopted to convert the quality data into the material level data, so that the problem that the material level is inaccurate by adopting a material level meter in the prior art and the feeding and charging are influenced is avoided.
According to the invention, the weighing sensor is used for acquiring the quality data of the stock bin, the feeding speed of the raw materials is calculated and obtained, and then whether the discharge port is blocked is judged, and acousto-optic alarm is carried out for maintenance. Meanwhile, the invention can self-check the running state after the equipment is down, thereby avoiding running errors; the alarm method provided by the invention is used for completing online test and improving the working efficiency. In addition, the invention can also monitor the material level of the storage bin in real time; the invention has simple structure and operation steps and is easy to implement.
Drawings
FIG. 1 is a schematic structural diagram of an on-line monitoring and fault alarm system for material level of an aluminum electrolysis crown block storage bin;
FIG. 2 is a schematic diagram of the electronic control module of the present invention communicating with a cell controller;
FIG. 3 is a schematic diagram of an electronic control module according to the present invention;
FIG. 4 is a schematic view of the antimagnetic load cell installation of the present invention;
FIG. 5 is a schematic flow chart of the method for controlling the aluminum electrolysis crown block stock bin material level on-line monitoring and fault alarm system of the invention;
FIG. 6 is a curve of the variation of the charging mass of the storage bin according to the invention;
FIG. 7 is a schematic diagram showing the material level of a material bin of an aluminum electrolysis crown block in real time.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-2, in a first embodiment of the present invention, an overhead guard bin malfunction alerting system includes: the device comprises a bin 21 for holding raw materials, an overhead crane for moving the bin and an electronic control module for controlling the bin;
the electronic control module includes: the device comprises an antimagnetic weighing sensor, a motion state sensor, an MCU module and an electromagnetic valve; the antimagnetic weighing sensor is electrically connected with the MCU module; the motion state sensor is electrically connected with the MCU module; the electromagnetic valve is electrically connected with the MCU module; the MCU module is in communication connection with the cell controller;
the crown block is provided with a crown block lifting ring 11 and a supporting seat 12, the antimagnetic weighing sensor 31 is provided with an upper backing plate 32 and a lower backing plate 33, and the antimagnetic weighing sensor lower backing plate 33 is fastened with the supporting seat 12; the upper backing plate 32 of the antimagnetic weighing sensor is fastened with the stock bin 21; the electromagnetic valve is arranged at the discharge port 22 of the storage bin 21 and is used for controlling the opening or closing of the discharge port 22; the feed inlet 23 of the silo 21 is arranged above the silo. The overhead crane hoisting ring 11 is used for hooking the overhead crane to the stock bin 21; the middle of the lower backing plate 33 is provided with a through hole, the discharge hole 22 of the storage bin 21 penetrates through the through hole of the lower backing plate 33, and the balance device has the advantages that materials are discharged from the discharge hole 22 and are not blocked by the lower backing plate 33, and the discharge hole 22 is arranged in the middle, so that the balance of the storage bin of the overhead travelling crane can be kept.
Preferably, in this embodiment, the motion sensor employs an accelerometer, and the sensor collects bin acceleration information, integrates the acceleration to obtain bin speed information, and further integrates the speed to obtain bin position information.
Preferably, in this embodiment, the motion state sensor and MCU module are installed between the upper pad 32 and the lower pad 33.
As shown in fig. 3, fig. 3 is a block diagram of the electronic control module in this embodiment, the magnetic-proof weighing sensor is used for acquiring stock bin mass data, millivolt voltage data of the stock bin mass measured by the magnetic-proof weighing sensor is amplified by an amplifier, filtered by a filter, and converted into a digital signal by an a/D, and the MCU module obtains digital information of the stock bin mass; the motion state sensor is used for acquiring the motion data of the storage bin and sending the motion data to the MCU module; the MCU processes corresponding data and controls the audible and visual alarm and the electromagnetic valve; in addition, the electronic control module is also provided with a stock bin quality upper and lower limit setting module, and equipment management personnel adjust the stock bin quality upper and lower limits according to actual conditions.
As shown in fig. 4, the present embodiment shows a mounting structure diagram of the antimagnetic weighing sensor and the upper and lower backing plates, wherein the upper backing plate 32 and the lower backing plate 33 are respectively fastened with the storage bin and the supporting seat by 4 bolts 35; the antimagnetic load cell 31 is connected to the MCU module through an antimagnetic load cell interface 34.
As shown in fig. 5, a method for controlling a material level online monitoring and fault alarm system of a material bin of an aluminum electrolysis crown block in a first embodiment of the present invention includes the following steps:
step 1: judging whether a storage bin is in a charging state, and if the storage bin is in the charging state, keeping the electromagnetic valve of the discharge port closed; if the stock bin is in a non-charging state, executing the step 2;
step 2: judging whether the stock bin is in a motion state, if so, keeping the electromagnetic valve of the discharge port closed, and executing the step 3; if the stock bin is in a static state, executing the step 3;
and step 3: when the overhead traveling crane bin is fed, the antimagnetic weighing sensor collects the mass data of the overhead traveling crane bin in real time, the electromagnetic valve of the discharge port is opened, the feeding speed V is calculated, and the step 4 is executed;
and 4, step 4: judging whether the feeding speed V is normal or not; if the feeding speed is normal, the stock bin has no fault, the electromagnetic valve of the discharge port is closed after the feeding is finished, and the step 5 is executed; if the feeding speed is too slow or no feeding action is performed, the material bin is blocked or equipment fails, the electromagnetic valve of the discharge port is closed, an audible and visual alarm is started, and the overhead travelling crane is moved to a maintenance area;
in this embodiment, the method for determining whether the feeding speed V is normal includes: setting a lower limit value V of a feeding speed VTHIf the feeding speed V is more than or equal to VTHIf so, the feeding speed is normal; if the feeding speed V is less than or equal to VTHIf so, the feeding speed is too low; the V isTHIs the historical average value V of the feeding speedzcα times of the total weight of the material, 0.05 & lt α & lt 0.9, wherein the historical average value of the feeding speed is obtained by the MCU module through the statistics of the historical data of the feeding speed, in the embodiment, VTH7.2 kg/min. In another embodiment, said VTHAs a set value, V is more than or equal to 1kg/minTH≤500kg/min。
And 5: the antimagnetic weighing sensor collects the mass of the stock bin in real time, and if the mass of the stock bin is greater than or equal to a lower limit value, the step 3 is executed; if the mass of the storage bin is smaller than the lower limit value, the overhead traveling crane moves the storage bin to a feeding area for feeding, an antimagnetic weighing sensor collects the mass of the storage bin in real time, if the mass of the storage bin is larger than the upper limit value, the overhead traveling crane finishes feeding, and step 3 is executed.
In this embodiment, the feeding speed calculation method includes: obtaining the latest n times of quality data M of the material biniCalculating a feed rate V, saidI is more than or equal to 1 and less than or equal to n, n is more than or equal to 3, T is the sampling period of the antimagnetic weighing sensor, and T is the time length from the last antimagnetic sensor to the current moment when the quality data of the storage bin is acquired.
As shown in FIG. 6, FIG. 6 is a curve of the variation of the bin charging mass, in this embodiment, the last three times of bin mass data m are extractedn、mn-1、mn-2Respectively calculating the average speed V of the mass of the two adjacent bins1、V2Respectively as the interval [ mn-1，mn-2]、[mn、mn-1]The speed value of the midpoint, represented by the slope in fig. 6; wherein,
the feeding speed V is a derivative function of the mass of the storage bin to the time, and is a linear function on the assumption that the mass of the storage bin is a quadratic function; the current feeding speed and V can be obtained1、V2The relationship is as follows:
from the above formula, one can obtain:
in this embodiment, when the quality of the storage bin is a lower limit value, the residual amount of the raw materials is at least the single feeding amount of the aluminum electrolytic cell.
According to the control method of the aluminum electrolysis crown block storage bin material level on-line monitoring and fault alarm system, the motion state sensor and the MCU module can be arranged on the storage bin or the crown block supporting seat or the upper backing plate or the lower backing plate. In one embodiment of the invention, the motion state sensor and the MCU module are installed on the storage bin. In another embodiment of the invention, the motion state sensor and the MCU module are installed on a crown block supporting seat. In another embodiment of the invention, the motion state sensor and the MCU module are mounted on the upper bolster plate. In another embodiment of the invention, the motion state sensor and the MCU module are mounted on the lower bolster plate.
According to the control method of the aluminum electrolysis crown block bin material level on-line monitoring and fault alarm system, the motion state sensor can be a gyroscope or an accelerometer. In an embodiment of the invention, the motion state sensor is a gyroscope.
In this embodiment, the overhead traveling crane storage bin fault alarm system is further configured with a display, the display is electrically connected with the MCU module, and the MCU module sends data to the display for display; the control method also comprises the step of displaying the material level of the stock bin; the MCU module receives weighing sensor data and acquires the bin material level, and the display displays the overhead traveling crane bin material level.
In the practical production, the aluminum electrolysis raw material in the crown block bin is in a solid-liquid co-melting state, the flowability of the raw material is poor, the bin level of the bin is often inaccurate when a level gauge is used for detecting the level, the weight of the raw material is obtained by an antimagnetic weighing sensor in the implementation, and the volume of the raw material is obtained according to the relation among mass, density and volume, and then the volume is converted into the level. It is worth mentioning that the material level display can adopt data direct display, curve representation or histogram display; as shown in fig. 7, the display detects the bin level in real time in the form of a histogram and displays the current level.
In addition, in this embodiment, the method further includes a step of obtaining whether the aluminum electrolytic cell needs to be fed by the overhead traveling crane bin, the MCU module communicates with the cell controller to obtain information whether the aluminum electrolytic cell needs to be fed, and if the aluminum electrolytic cell does not need to be fed at the present time, the aluminum electrolytic cell remains still. And if the aluminum electrolytic cell needs to be fed at the current moment, moving the overhead traveling crane to a feeding area of the aluminum electrolytic cell for feeding.
It is worth mentioning that the prior art generally adopts the method of measuring the concentration of solute in the electrolytic cell and separating the feeding amount and the feeding time interval by a cell controller. In this embodiment, the aluminum electrolysis cell control machine is in communication connection with the electronic control module, and the cell control machine notifies the electronic control module to open the electromagnetic valve and send the feeding amount information. In addition, the cell control machine is also communicated with the PLC control system of the crown block, when a certain electrolytic cell needs to be fed, the cell control machine informs the PLC control system of the crown block, and the PLC control system of the crown block moves the crown block and the storage bin to the corresponding electrolytic cell area to feed materials.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The method for controlling the aluminum electrolysis crown block bin material level on-line monitoring and fault alarming system is characterized in that the aluminum electrolysis crown block bin material level on-line monitoring and fault alarming are carried out based on the crown block bin fault alarming system; overhead crane feed bin trouble alarm system includes: the device comprises a bin for containing raw materials, an overhead travelling crane for moving the bin and an electronic control module for controlling the bin;
the electronic control module includes: the device comprises a weighing sensor, a motion state sensor, an MCU module and an electromagnetic valve; the weighing sensor is electrically connected with the MCU module; the motion state sensor is electrically connected with the MCU module; the electromagnetic valve is electrically connected with the MCU module; the MCU module is in communication connection with the cell controller;
the overhead traveling crane is provided with a supporting seat, the weighing sensor is provided with an upper cushion plate and a lower cushion plate, and the lower cushion plate of the weighing sensor is fastened with the supporting seat; the upper base plate of the weighing sensor is fastened with the stock bin; the electromagnetic valve is arranged at the discharge port of the storage bin and used for controlling the opening or closing of the discharge port;
the method comprises the following steps:
step 1: judging whether a storage bin is in a charging state, and if the storage bin is in the charging state, keeping the electromagnetic valve of the discharge port closed; if the stock bin is in a non-charging state, executing the step 2;
step 2: judging whether the stock bin is in a motion state, if so, keeping the electromagnetic valve of the discharge port closed, and executing the step 3; if the stock bin is in a static state, executing the step 3;
and step 3: when the overhead traveling crane stock bin is fed, the weighing sensor collects the mass data of the overhead traveling crane stock bin in real time, the electromagnetic valve of the discharge port is opened, the feeding speed V is calculated, and the step 4 is executed;
and 4, step 4: judging whether the feeding speed V is normal or not; if the feeding speed is normal, closing the electromagnetic valve of the discharge hole after the feeding is finished, and executing the step 5; otherwise, closing the electromagnetic valve of the discharge hole, opening an audible and visual alarm, and moving the overhead traveling crane;
and 5: the weighing sensor collects the mass of the stock bin in real time, and if the mass of the stock bin is greater than or equal to a lower limit value, the step 3 is executed; if the mass of the storage bin is smaller than the lower limit value, the overhead travelling crane moves the storage bin to a feeding area for feeding, a weighing sensor collects the mass of the storage bin in real time, if the mass of the storage bin is larger than the upper limit value, the overhead travelling crane finishes feeding, and step 3 is executed.
2. The aluminum electrolysis crown block storage bin material level on-line monitoring and fault alarming device as claimed in claim 1The control method of the system is characterized in that the feeding speed calculation method comprises the following steps: obtaining the latest n times of quality data m of the material biniCalculating a feed rate V, saidI is more than or equal to 1 and less than or equal to n, n is more than or equal to 3, T is the sampling period of the weighing sensor, and T is the time from the last time that the antimagnetic sensor acquires the mass data of the storage bin to the current time.
3. The control method of the aluminum electrolysis crown block stock bin material level on-line monitoring and fault alarm system according to claim 1, characterized in that: in step 5, when the quality of the storage bin is a lower limit value, the residual amount of the raw materials is at least the single feeding amount of the aluminum electrolytic cell.
4. The control method of the aluminum electrolysis crown block stock bin material level on-line monitoring and fault alarm system according to claim 1, characterized in that: the motion state sensor is a gyroscope or an accelerometer.
5. The method for controlling the on-line monitoring and fault-alarming system for the material level of the material bin of the aluminum electrolysis crown block as claimed in claim 1, wherein in the step 4, the method for judging whether the feeding speed V is normal or not comprises the following steps: setting a lower limit value V of a feeding speed VTHIf the feeding speed V is more than or equal to VTHAnd the feeding speed is normal.
6. The method for controlling the aluminum electrolysis crown block storage bin material level on-line monitoring and fault alarm system according to claim 1, wherein the motion state sensor and the MCU module are installed on the storage bin or the crown block supporting seat or the upper backing plate or the lower backing plate.
7. The method for controlling the aluminum electrolysis crown block storage bin material level on-line monitoring and fault alarm system according to claim 1, wherein the motion state sensor and the MCU module are installed between the upper backing plate and the lower backing plate.
8. The control method of the aluminum electrolysis crown block stock bin material level on-line monitoring and fault alarm system according to claim 1, characterized in that: the overhead traveling crane bin fault alarm system is also provided with a display, the display is electrically connected with the MCU module, and the MCU module sends data to the display for display; the control method also comprises the step of displaying the material level of the stock bin;
the MCU module receives weighing sensor data and acquires the bin material level, and the display displays the overhead traveling crane bin material level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624731.2A CN106011941B (en) | 2016-08-02 | 2016-08-02 | The on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624731.2A CN106011941B (en) | 2016-08-02 | 2016-08-02 | The on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system |
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| CN106011941A true CN106011941A (en) | 2016-10-12 |
| CN106011941B CN106011941B (en) | 2018-04-20 |
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| CN201610624731.2A Active CN106011941B (en) | 2016-08-02 | 2016-08-02 | The on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system |
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