CN107144320B - Aluminum electrolysis chute charging detection system and working method thereof - Google Patents
Aluminum electrolysis chute charging detection system and working method thereof Download PDFInfo
- Publication number
- CN107144320B CN107144320B CN201710343700.4A CN201710343700A CN107144320B CN 107144320 B CN107144320 B CN 107144320B CN 201710343700 A CN201710343700 A CN 201710343700A CN 107144320 B CN107144320 B CN 107144320B
- Authority
- CN
- China
- Prior art keywords
- plc
- temperature
- fan
- charging
- aluminum electrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/246—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/183—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer characterised by the use of the resistive element
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Thermal Sciences (AREA)
- Electrolytic Production Of Metals (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses an aluminum electrolysis chute feeding detection system and a working method thereof, wherein the aluminum electrolysis chute feeding detection system comprises a data acquisition system and a control system, the data acquisition system acquires various data information in the feeding process and transmits the information to the control system, and the control system controls the action of a feeding fan of aluminum electrolysis equipment.
Description
Technical Field
The invention relates to the technical field of aluminum electrolysis, in particular to a charging detection system and method for an aluminum electrolysis chute.
Background
For the material conveying detection technology of the aluminum electrolysis chute, a radio frequency admittance level gauge or other types of level gauges are generally used as detection elements in the past industry for detection, the main principle is that the level gauge is installed at a proper position of an aluminum electrolysis tail end tank, when the material reaches the tail end tank, the level gauge generates an induction signal, and then the induction signal is transmitted to a control system to stop the operation of feeding equipment. However, there are some disadvantages, mainly:
1. the misjudgment of the level indicator sensor is caused by the reasons of environment or adhesion of materials used for a long time on the probe, and the like, so that the accuracy is reduced.
2. The price of the material level meter is high, and the price of the material level meter is between six thousand yuan and ten thousand yuan.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an aluminum electrolysis chute feeding detection system, which detects the feeding state through the temperature change by arranging a thermal resistor on an aluminum electrolysis end tank.
The invention adopts the following technical scheme:
the feeding detection system for the aluminum electrolysis chute comprises a data acquisition system and a control system, wherein the data acquisition system acquires data information of various working conditions in the feeding process and transmits the data information to the control system, and the control system controls the action of a feeding fan of aluminum electrolysis equipment.
Furthermore, data acquisition system includes baffle-box, thermal resistance, current sensor and pressure sensor, the baffle-box welding is on the insulating festival of end groove unloading standpipe, the mounting nut of thermal resistance welds above the baffle-box, at reinforced fan export installation pressure sensor, connects current sensor on reinforced fan's circuit connection line.
Further, the thermal resistor is a PT100 thermal resistor.
Further, control system includes that temperature signal keeps apart changer, PLC programmable controller, host computer, cable and auxiliary relay, the cable includes signal acquisition cable and communication cable, the thermal resistance acquisition signal keeps apart the changer through signal acquisition cable and temperature signal and transmits for PLC programmable controller, and PLC programmable controller still receives the electric current and the pressure information that current sensor and pressure sensor gathered through the signal acquisition cable, auxiliary relay receives the instruction that PLC programmable controller sent, controls the start-up and the stop of reinforced fan, the information that PLC programmable controller received transmits for the host computer through communication cable to show at the host computer.
Furthermore, the PLC has the functions of A/D conversion, digital quantity input and output and remote network communication.
Furthermore, 10% -20% of standby points need to be reserved for the PLC.
Furthermore, the communication cable is an optical fiber, the signal acquisition cable is a 2-core copper-core cable, and the diameter of the signal acquisition cable is not less than 1.5mm2。
In order to solve the technical problems in the prior art, the invention also provides a working method of the aluminum electrolysis chute charging detection system, which comprises the following steps:
the PLC can receive analog signals collected by the thermal resistor, the pressure sensor and the current sensor in real time and convert the analog signals into digital signals through the A/D conversion module, and the PLC can also receive starting signals of the feeding fan.
The method comprises the following steps: and setting a clock module of the PLC according to the actual working condition, automatically starting the feeding fan within set time, and setting an upper limit pressure value when the feeding fan stops.
Step two: and initializing variables of the PLC after the charging fan is started.
Step three: the PLC receives the temperature signal acquired by the thermal resistor in real time and transmits the temperature signal to an address variable, after the PLC obtains a starting signal of the feeding fan, the PLC locks the initial temperature signal acquired by the thermal resistor after 2-3 minutes, meanwhile, the gain value is added to the locked initial temperature, and the gain locked temperature signal with the increased gain value is transmitted to another address variable of the PLC.
Further, the gain value is 2-3 ℃.
Step four: and comparing the gain locking temperature value with the received real-time temperature value, and locking the output real-time temperature by the PLC when the output real-time temperature is greater than the gain locking temperature in the step two.
Step five: and the PLC compares the received real-time pressure signal with a set upper limit pressure value at the same time.
Step six: and when the two conditions that the output real-time temperature is greater than the gain locking temperature in the step two and the value of the received real-time pressure signal is greater than the set upper limit pressure value in the step three are met, the PLC sends a delay instruction, and after a certain time, the PLC controls the closing of an air inlet valve of the feeding fan and stops the feeding fan.
Furthermore, the delay time set by the delay instruction is 3-5 minutes and can be set according to the field working condition.
Step seven: and repeating the steps from two to six, and realizing automatic detection of the aluminum electrolysis cell charging.
The host computer carries out real-time display with the curve mode to the data and the operating mode of gathering, makes things convenient for operating personnel's more audio-visual judgement, and operating personnel's accessible host computer monitors all data, gathers and revises to control and the reinforced state is judged the state of reinforced fan, and the host computer still has the data storage function, in order to make things convenient for the inquiry of data, when reinforced accomplishing, still accessible voice prompt operating personnel.
The invention has the beneficial effects that:
the feeding detection system and the working method of the aluminum electrolysis chute have the advantages of convenient installation, no special space limitation, no maintenance, better and convenient effect, reduction of the labor intensity of personnel, and reduction of the price of required hardware by more than 90 percent compared with the price of a material level meter in the prior art, wherein the conventional feeding detection method of the aluminum electrolysis chute is easy to generate misjudgment, has low accuracy and higher cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of an aluminum electrolysis chute charging detection system of the present invention;
FIG. 2 is a flow chart of the operation of the feeding detection system of the aluminum electrolysis chute of the invention;
the device comprises a feeding fan 1, a current sensor 2, a pressure sensor 3, a blanking vertical pipe 4, a buffer box 5, a thermal resistor 6, a temperature signal isolation transmitter 7, a PLC (programmable logic controller) 8, a communication cable 9, an upper computer 10, an intermediate relay 11 and a signal acquisition cable 12.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, an aluminum electrolysis chute charging detection system comprises: the data acquisition system and the control system are used for acquiring various data information in the charging process and transmitting the information to the control system, and the control system controls the charging fan of the aluminum electrolysis equipment to act.
Further, data acquisition system includes baffle-box 5, thermal resistance 6, current sensor 2 and pressure sensor 3, the baffle-box welding is on the insulating festival of end groove unloading standpipe, the mounting nut of thermal resistance welds above the baffle-box, at 1 export installation pressure sensor of feeding fan, connects current sensor on the circuit connection line of feeding fan.
Further, the thermal resistor is a PT100 thermal resistor.
Further, control system includes that temperature signal keeps apart changer 7, PLC programmable controller 8, host computer 10, cable and auxiliary relay 11, the cable includes signal acquisition cable and communication cable, the thermal resistance acquisition signal passes through signal acquisition cable and temperature signal isolation changer and transmits for PLC programmable controller, and PLC programmable controller still receives current and the pressure information that current sensor and pressure sensor gathered through the signal acquisition cable, auxiliary relay receives the instruction that PLC programmable controller sent, controls the start-up and the stop of reinforced fan, the information that PLC programmable controller received transmits for the host computer through communication cable to show at the host computer.
Furthermore, the PLC has the functions of A/D conversion, digital quantity input and output and remote network communication.
Furthermore, 10% -20% of standby points need to be reserved for the PLC.
Furthermore, the communication cable is an optical fiber, the temperature signal acquisition cable is a 2-core copper-core cable, and the diameter of the cable is not less than 1.5mm2。
In order to solve the technical problems in the prior art, the invention also provides a working method of the aluminum electrolysis chute charging detection system, which comprises the following working steps as shown in fig. 2:
the PLC can receive analog signals collected by the thermal resistor, the pressure sensor and the current sensor in real time and convert the analog signals into digital signals through the A/D conversion module, and the PLC can also receive starting signals of the feeding fan.
The method comprises the following steps: the method comprises the steps of setting a clock module of the PLC according to actual working conditions, setting a certain time, automatically starting the feeding fan by controlling the intermediate relay, setting an upper limit pressure value when the feeding fan stops, and setting an upper limit pressure value when the feeding fan stops.
Step two: and initializing variables of the PLC after the charging fan is started.
Step three: the PLC receives temperature signals collected by the thermal resistors in real time and transmits the temperature signals to an address variable, because the temperature in a tail end groove blanking vertical pipe can be influenced by wind exhausted by the feeding fan, the temperature generally tends to be stable after lasting for 2-3 minutes, after the PLC obtains starting signals of the feeding fan, the initial temperature signals collected by the thermal resistors are locked after 2-3 minutes, meanwhile, the initial locking temperature is increased by a gain value, the gain locking temperature signals with the increased gain value are transmitted to another address variable of the PLC, and the real-time collection of the thermal resistors on the temperature is not influenced.
Further, the gain value is 2-3 ℃.
Step four: and comparing the gain locking temperature value with the received real-time temperature value, and locking the output real-time temperature by the PLC when the output real-time temperature is greater than the gain locking temperature in the step two.
Step five: and the PLC compares the received real-time pressure signal with a set upper limit pressure value at the same time.
Step six: and when the two conditions that the output real-time temperature is greater than the gain locking temperature in the step two and the value of the received real-time pressure signal is greater than the set upper limit pressure value in the step three are met, the PLC sends a delay instruction, the closing of an air inlet valve of the feeding fan is controlled after a certain time, and the feeding fan stops running. When the aluminum powder reaches the tail end groove and the acquired real-time temperature is higher than the gain locking temperature, the material in the electrolytic tank cannot be filled, and the filling material needs to be carried out for a period of time, so that a delay signal needs to be set for stopping the feeding fan.
Furthermore, the delay time set by the delay instruction is 3-5 minutes and can be set according to the field working condition.
Step seven: and repeating the steps from two to six, and realizing automatic detection of the aluminum electrolysis cell charging.
The host computer carries out real-time display with the curve mode to the data and the operating mode of gathering, makes things convenient for operating personnel's more audio-visual judgement, and operating personnel's accessible host computer monitors all data, gathers and revises to control and the reinforced state is judged the state of reinforced fan, and the host computer still has the data storage function, in order to make things convenient for the inquiry of data, when reinforced accomplishing, still accessible voice prompt operating personnel.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. The charging detection system for the aluminum electrolysis chute is characterized by comprising a data acquisition system and a control system, wherein the data acquisition system acquires various data information in the charging process and transmits the information to the control system, and the control system controls the charging fan of aluminum electrolysis equipment to act;
the data acquisition system comprises a buffer tank, a thermal resistor, a current sensor and a pressure sensor, wherein the buffer tank is welded on an insulating joint of a blanking vertical pipe of a tail end groove, a mounting nut of the thermal resistor is welded on the buffer tank, the thermal resistor detects the temperature change so as to detect the charging state through the temperature change, the pressure sensor is mounted at the outlet of the charging fan, and the current sensor is connected on a circuit connecting line of the charging fan;
control system includes that temperature signal keeps apart changer, PLC programmable controller, host computer, cable and auxiliary relay, the cable includes communication cable and signal acquisition cable, the thermal resistance collection signal keeps apart the changer through signal acquisition cable and temperature signal and transmits for PLC programmable controller, and PLC programmable controller still receives the electric current and the pressure information that current sensor and pressure sensor gathered through the signal acquisition cable, auxiliary relay receives the instruction that PLC programmable controller sent, controls the start-up and the stopping of reinforced fan, the information that PLC programmable controller received transmits for the host computer through communication cable to show at the host computer.
2. The aluminum reduction chute charging detection system of claim 1 wherein said thermal resistor is a PT100 thermal resistor.
3. The aluminum electrolysis chute charging detection system of claim 1, wherein the PLC programmable controller has A/D conversion function and digital quantity input/output and remote network communication function.
4. The aluminum electrolysis chute charging detection system of claim 1, wherein 10% -20% of standby points need to be reserved for the PLC.
5. The aluminum electrolysis chute charging detection system as claimed in claim 1, wherein the communication cable is an optical fiber, the temperature signal acquisition cable is a 2-core copper-core cable, and the diameter of the cable is not less than 1.5mm2。
6. An operating method based on the aluminum electrolysis chute charging detection system of claim 1 is characterized by comprising the following steps:
the PLC can receive analog signals collected by the thermal resistor, the pressure sensor and the current sensor in real time and convert the analog signals into digital signals through the A/D conversion module, and the PLC can also receive a starting signal of the charging fan;
the method comprises the following steps: setting a clock module of the PLC according to the actual working condition, automatically starting the feeding fan within set time, and setting an upper limit pressure value when the feeding fan stops;
step two: initializing variables of the PLC after the charging fan is started;
step three: the PLC receives the temperature signal acquired by the thermal resistor in real time and transmits the temperature signal to an address variable, after the PLC obtains a starting signal of the charging fan, the temperature signal acquired by the thermal resistor is locked after 2-3 minutes, meanwhile, the locking temperature is increased by a gain value, and the gain locking temperature signal with the increased gain value is transmitted to the other address variable of the PLC;
step four: comparing the gain locking temperature value with the received real-time temperature value, and locking the output real-time temperature by the PLC when the output real-time temperature is greater than the gain locking temperature in the step two;
step five: the PLC compares the received real-time pressure signal with a set upper limit pressure value at the same time;
step six: when the conditions that the output real-time temperature is greater than the gain locking temperature in the step two and the value of the received real-time pressure signal is greater than the set upper limit pressure value in the step three are met, the PLC sends a delay instruction, and after a certain time, the PLC controls the closing of an air inlet valve of the feeding fan and stops the feeding fan;
step seven: repeating the steps from two to six, and realizing automatic detection of the aluminum electrolysis cell charging;
the host computer carries out real-time display with the curve mode to the data and the operating mode of gathering, makes things convenient for operating personnel's more audio-visual judgement, and operating personnel's accessible host computer monitors all data, gathers and revises to control and the reinforced state is judged the state of reinforced fan, and the host computer still has the data storage function, in order to make things convenient for the inquiry of data, when reinforced accomplishing, still accessible voice prompt operating personnel.
7. The operating method of an aluminum electrolysis chute charging detection system as claimed in claim 6, wherein the gain value is 2 ℃ -3 ℃.
8. The operating method of the aluminum electrolysis chute charging detection system according to claim 6, wherein the delay time set by the delay instruction is 3-5 minutes and can be set by the operator according to the working conditions on site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343700.4A CN107144320B (en) | 2017-05-16 | 2017-05-16 | Aluminum electrolysis chute charging detection system and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343700.4A CN107144320B (en) | 2017-05-16 | 2017-05-16 | Aluminum electrolysis chute charging detection system and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107144320A CN107144320A (en) | 2017-09-08 |
| CN107144320B true CN107144320B (en) | 2020-02-21 |
Family
ID=59778111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710343700.4A Active CN107144320B (en) | 2017-05-16 | 2017-05-16 | Aluminum electrolysis chute charging detection system and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107144320B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2860522B1 (en) * | 2003-10-02 | 2006-01-13 | Pechiney Aluminium | METHOD AND SYSTEM FOR CONTROLLING THE ADDITION OF POWDERY MATERIALS IN THE BATH OF AN ELECTROLYSIS CELL INTENDED FOR THE PRODUCTION OF ALUMINUM |
| CN101307468A (en) * | 2008-02-03 | 2008-11-19 | 沈阳城顺达工业技术有限公司 | Feeding method and device of fluoride salt bin on electrolytic tank |
| CN101775625B (en) * | 2009-12-02 | 2011-09-14 | 威海市正大环保设备有限公司 | Method and device for purifying electrolytic aluminum smoke |
| CN102829840B (en) * | 2011-06-15 | 2015-03-25 | 北京化工大学 | On-line material level identifying system and method of interval stirring heating device based on temperature detection |
| CN102527483A (en) * | 2011-07-06 | 2012-07-04 | 洛阳宇航重工机械有限公司 | Open circuit production line device and method for crushing aluminum oxide crusting block |
| CN104694969A (en) * | 2013-12-10 | 2015-06-10 | 孙滕安 | Alumina conveying and electrolytic gas purifying control system |
| CN104785038A (en) * | 2014-01-22 | 2015-07-22 | 宝钢不锈钢有限公司 | Control apparatus and control method for inlet temperature of bag-type dust collector used for furnace |
| US10955278B2 (en) * | 2014-01-30 | 2021-03-23 | Ford Global Technologies, Llc | System and methods for ullage space fuel level estimation |
| CN105239098A (en) * | 2015-10-30 | 2016-01-13 | 四川华索自动化信息工程有限公司 | Automatic aluminum oxide charging system for aluminum electrolysis based on linear drive circuit |
-
2017
- 2017-05-16 CN CN201710343700.4A patent/CN107144320B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107144320A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110732109B (en) | Automatic pressure monitoring device for marine fire-fighting steel cylinder | |
| CN105334811A (en) | Wireless tower monitoring method of power lines based on ZigBee network | |
| CN105698959A (en) | Dry-type air-core reactor overheating fault early warning system based on TVOC and temperature test | |
| CN107144320B (en) | Aluminum electrolysis chute charging detection system and working method thereof | |
| CN107919176A (en) | A kind of nuclear power plant EAU systems automatic reading system and number reading method | |
| CN110632904A (en) | Control method of automatic water supply system | |
| CN111025077A (en) | Automatic test system and test method for intelligent terminal of power distribution network | |
| CN110618327A (en) | Mobile distribution automation test equipment and test method thereof | |
| CN205427537U (en) | Electric power information communication monitoring system | |
| CN104155932A (en) | Distributed photovoltaic grid-connected power generation monitoring system, energy consumption managing method and photovoltaic grid-connected power generation monitoring equipment | |
| CN201813072U (en) | Wireless sensor network measure and control device for prefabricated substations | |
| Li et al. | A novel on-line system for monitoring the oil level of capsule-type storage tank of power transformer | |
| CN111342616A (en) | Control method and control system based on control system | |
| CN203965921U (en) | The distributed photovoltaic supervisory system of generating electricity by way of merging two or more grid systems | |
| CN206096981U (en) | A remote monitering system that it is anti -reflection that is used for coal seam to annotate liquid CO2 fracturing | |
| CN214315494U (en) | Industrial gateway device | |
| CN114152892A (en) | Monitoring method for battery health degree of fault indicator | |
| CN109613937B (en) | Control device of oxyhydrogen generator | |
| CN208752783U (en) | A kind of novel remote controler tester | |
| CN112764387A (en) | Natural gas monitoring system for hot water machine room | |
| CN106354179A (en) | Remote monitoring system for fracture anti-reflection of liquid state CO2 injected to coal seam | |
| CN218181365U (en) | PLC-based water turbine emptying valve opening control device | |
| CN110608707A (en) | Online testing system and method for attack angle sensor | |
| CN209911803U (en) | Air compressor machine monitor control terminal | |
| CN215641118U (en) | Point type toxic gas detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |