CN109136587A - Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium - Google Patents
Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium Download PDFInfo
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- CN109136587A CN109136587A CN201811068997.9A CN201811068997A CN109136587A CN 109136587 A CN109136587 A CN 109136587A CN 201811068997 A CN201811068997 A CN 201811068997A CN 109136587 A CN109136587 A CN 109136587A
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- molten aluminum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
Abstract
The embodiment of the present invention provides a kind of molten aluminum degasification for pneumatic control method, acquires the X-ray issued in molten aluminum by X-ray receiver, carries out spectrum analysis to X-ray, determines the major metal component for including in molten aluminum；The type for needing to be passed through inert gas in the molten aluminum tank is determined according to major metal component；The opening amplitude of proportioning valve is controlled according to the first difference of the hydrogen content in cylindrical container molten aluminum and the standard hydrogen content of setting to control the input quantity of inert gas；Wherein, when the first difference is greater than the first given threshold, control proportioning valve opening becomes larger to increase the input of the inert gas；When the first difference is less than the first given threshold, control proportioning valve opening becomes smaller to reduce the input of inert gas.Method provided in an embodiment of the present invention can obtain the hydrogen content in molten aluminum and determine the ingredient of molten aluminum, and carries out selection and accurate input quantity to inert gas based on hydrogen content and molten aluminum ingredient and automatically control, and dehydrogenation effect is good and can save inert gas.
Description
Technical field
The present invention relates to molten aluminum degasification fields more particularly to a kind of molten aluminum degasification for pneumatic control method, device, system and meter
Calculation machine storage medium.
Background technique
In aluminium process, aluminium alloy absorbs hydrogen in liquid, and the hydrogen content of molten aluminum liquid can seriously affect casting
Quality.In condensation process, with the reduction of hydrogen solubility, hydrogen has little time to escape from solution, will be subsequent
In rolling mill practice, plate surface white point, pin hole is caused to increase, a series of defects such as the mechanical performance of material decline, and finally led
Scrap of the product is caused, it then becomes necessary to carry out degassing processing to molten aluminum.
In currently used scheme, firstly, what is used manually adjusts inert gas air demand, it is difficult to be precisely controlled gas supply
Amount is easy to appear the case where dehydrogenation is incomplete or inert gas wastes；Secondly, cannot be according to the component selection inertia in molten aluminum
Gas, so that dehydrogenation effect is not achieved most preferably.
Summary of the invention
In view of this, the main purpose of the embodiment of the present invention be to provide one kind can it is automatic, be precisely controlled gas supply type
And the molten aluminum of air demand removes pneumatic control method, device, system and computer storage medium.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is achieved in that
The embodiment of the invention provides a kind of molten aluminum degasification for pneumatic control method, is applied to molten aluminum degasification gas supply control system
System, the system comprises: molten aluminum tank, sampler, controller and the hydrogen-measuring apparatus being connect with the controller, analytical instrument,
Temperature sensor, galvanometer, inert gas tube, proportioning valve；
The material mouth that the hydrogen-measuring apparatus includes horizontally disposed cylindrical container, is arranged on the chamber wall of the cylindrical container
With with the material mouth lid of the material mouth pivotable connection, the nitrogen valve, the heating wire that are connected with the cylindrical container；The cylindricality
Container includes the first end and second end positioned at the cylindrical container both ends, and the first end is sealed by the first metal plate, institute
Second end is stated to seal by the second metal plate；First metal plate and the second metal plate pass through conducting wire respectively and are connected to constant pressure electricity
The positive and negative anodes in source, wherein be connected with first switch on the conducting wire；The controller by control the folding of the material mouth lid with
Control the opening and closing of the cylindrical container；
The top of the aluminium vessel cavity is arranged in the analytical instrument；The analytical instrument includes snoot and X
Optical receiver, the snoot is in the shape of a trumpet, and the horn mouth central axis of the snoot is arranged in the X-ray receiver
On, the setting of horn mouth described in the receiving end face of the X receiver；
The heating wire setting, heating wire on the outside of the cylindrical container are connected with second switch；
The temperature sensor is arranged in the cylindrical container chamber；
The galvanometer is arranged around the cylindrical container；
The inert gas tube is connected with the proportioning valve, and inert gas is sent into molten aluminum by the inert gas tube；
The described method includes:
The material mouth lid is opened in control；
It controls the temperature sensor and acquires the cylindrical container chamber indoor temperature value, when the temperature value is set lower than first
When determining the minimum value of threshold range, the controller controls the second switch and connects；When the temperature value sets threshold first
When within the scope of value, the second switch that the controller controls the heating wire is disconnected；Wherein, the first given threshold range
The temperature value being arranged to make the molten aluminum be maintained at liquid；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum.
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines institute
State the major metal component for including in molten aluminum；Inert gas in the molten aluminum tank is passed through according to major metal component selection
Type；
Institute is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of proportioning valve is stated to control the input quantity of the inert gas；Wherein, when first difference is greater than the first setting
When threshold value, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is less than first
When given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas.
Wherein, the system also includes the rotor electric machines being electrically connected with the controller, and the rotor electric machine is for driving
Rotor stirs the molten aluminum in the molten aluminum tank；The method also includes:
The revolving speed of the rotor electric machine is controlled according to first difference；When first difference is greater than the first given threshold
When, first control signal is exported, the revolving speed control electric current for controlling the rotor electric machine becomes larger；When first difference is less than or waits
When the first given threshold, second control signal is exported, the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, the system also includes speed probe, the speed probe is connect with the controller；The basis
First difference controls after the revolving speed of the rotor electric machine, further includes:
Control the tachometer value that the sensor acquires the rotor electric machine；
According to the of the corresponding rated speed value of the revolving speed of the tachometer value of the rotor electric machine and motor control electric current
Two differences adjust the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, third control is exported
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become smaller；It is defeated when second difference is less than the second given threshold
4th control signal out, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second setting
When threshold value, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, the system also includes air supply motor and starter, the air supply motor by starter with it is described
Controller connection, before executing the method, further includes: send air-supply enabled instruction to the starter, and control institute
It states starter and the air supply motor is opened according to the air-supply enabled instruction.
A kind of molten aluminum degasification supplies control system, the system comprises: molten aluminum tank, sampler, controller, output module,
Input module and the hydrogen-measuring apparatus being connect with the controller, analytical instrument, temperature sensor, galvanometer, inert gas tube,
Proportioning valve；
The hydrogen-measuring apparatus include on the chamber wall of horizontally disposed cylindrical container, the cylindrical container material mouth that is arranged and
With the material mouth lid of the material mouth pivotable connection, the nitrogen valve being connected with the cylindrical container；The cylindrical container includes
First end and second end positioned at the cylindrical container both ends, the first end are sealed by the first metal plate, the second end
It is sealed by the second metal plate；First metal plate and the second metal plate pass through conducting wire respectively and are connected to the positive and negative of constant voltage source
Pole, wherein be connected with first switch on the conducting wire；The controller is controlled described by controlling the folding of the material mouth lid
The opening and closing of cylindrical container；
The top of the aluminium vessel cavity is arranged in the analytical instrument；The analytical instrument includes snoot and X
Optical receiver, the snoot is in the shape of a trumpet, and the horn mouth central axis of the snoot is arranged in the X-ray receiver
On, the setting of horn mouth described in the receiving end face of the X receiver；
The heating wire setting, heating wire on the outside of the cylindrical container are connected with second switch；The temperature
Sensor is arranged in the cylindrical container chamber；The galvanometer is arranged around the cylindrical container；The inert gas tube
It is connected with the proportioning valve, inert gas is sent into molten aluminum by the inert gas tube；The hydrogen-measuring apparatus, the ingredient point
Analyzer is connect with the input module respectively；The proportioning valve is connect with the output module；The controller is total by data
Line is connect with the input module and output module respectively；Wherein,
The controller issues control signal to the output module for receiving the signal of the input module；
The controller is also used to: the material mouth lid is opened in control；It controls the temperature sensor and acquires the cylindricality appearance
Device chamber indoor temperature value, when the temperature value is lower than the first given threshold range, the controller controls the second switch
It connects；When the temperature value is equal to the first given threshold range, the second switch that the controller controls the heating wire is disconnected
It opens；Wherein, the first given threshold range is so that the molten aluminum is maintained at liquid and the temperature value that is arranged；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum.
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines institute
State the major metal component for including in molten aluminum；Need to be passed through indifferent gas in the molten aluminum tank according to major metal component determination
The type of body；
Institute is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of proportioning valve is stated to control the input quantity of the inert gas；Wherein, when first difference is greater than the first setting
When threshold value, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is less than first
When given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas；
The input module, for obtaining the hydrogen content in the closed container by the hydrogen-measuring apparatus；It is also used to
The major metal component that the molten aluminum includes is determined by the analytical instrument；
The output module, for controlling the opening amplitude of the proportioning valve.
Wherein, the system also includes the rotor electric machines being electrically connected with the controller, and the rotor electric machine is for driving
Rotor stirs the molten aluminum in the molten aluminum tank；The controller is also used to control the rotor electric machine according to first difference
Revolving speed；When first difference is greater than the first given threshold, first control signal is exported, the revolving speed of the rotor electric machine is controlled
Control electric current becomes larger；When first difference is less than or equal to the first given threshold, second control signal is exported, described in control
The revolving speed control electric current of rotor electric machine is constant.
Wherein, the system also includes speed probe, the speed probe is connect with the controller；The basis
After first difference controls the revolving speed of the rotor electric machine, the controller is also used to:
Control the tachometer value that the sensor acquires the rotor electric machine；
According to the of the corresponding rated speed value of the revolving speed of the tachometer value of the rotor electric machine and motor control electric current
Two differences adjust the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, third control is exported
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become smaller；It is defeated when second difference is less than the second given threshold
4th control signal out, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second setting
When threshold value, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, further includes: air supply motor, contactor, breaker；The three-phase power input end mouth of the air supply motor is distinguished
It connects with the three-phase electrical contact contact of the three-phase of contactor electrical contact contact, breaker and accesses three phase mains；It is described to connect
The control coil of tentaculum connects with the Auxiliary control switch of the breaker and accesses the digital power output end of the controller
Mouthful.
Wherein, the output module includes frequency converter, the three-phase power input end mouth of the rotor electric machine and the frequency conversion
The three-phase output end mouth of device is connected respectively；The three-phase electricity that the three-phase input port of the frequency converter passes through breaker respectively connects
Touch contact series connection access three phase mains.
A kind of molten aluminum degasification air supply controller is run on the memory including memory, processor and being stored in
Computer program, it is characterised in that: the processor is realized when executing the computer program such as the application any embodiment institute
The molten aluminum degasification stated is for pneumatic control method.
A kind of computer readable storage medium is stored with computer program on the computer readable storage medium, described
Realize the molten aluminum degasification as described in the application any embodiment for pneumatic control method when computer program is executed by processor.
Molten aluminum degasification provided in an embodiment of the present invention is acquired in molten aluminum for pneumatic control method and system by X-ray receiver
The X-ray of sending carries out spectrum analysis to X-ray, determines the major metal component for including in molten aluminum；It is determined according to major metal component
Need to be passed through the type of inert gas in the molten aluminum tank；According to the standard hydrogen of hydrogen content and setting in cylindrical container molten aluminum
First difference of Gas content controls the opening amplitude of proportioning valve to control the input quantity of inert gas；Wherein, when the first difference is big
When the first given threshold, control proportioning valve opening becomes larger to increase the input of the inert gas；When the first difference is less than
When one given threshold, control proportioning valve opening becomes smaller to reduce the input of inert gas.Method energy provided in an embodiment of the present invention
It enough obtains the hydrogen content in molten aluminum and determines the ingredient of molten aluminum, and inert gas is carried out based on hydrogen content and molten aluminum ingredient
Selection and accurate input quantity automatically control, and dehydrogenation effect is good and can save inert gas.
Detailed description of the invention
Fig. 1 is a kind of molten aluminum degasification provided in an embodiment of the present invention for the corresponding system structure diagram of pneumatic control method；
Fig. 2 is a kind of structural schematic diagram of hydrogen-measuring apparatus provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of snoot provided in an embodiment of the present invention；
Fig. 4 is a kind of flow diagram of the molten aluminum degasification provided in an embodiment of the present invention for pneumatic control method；
Fig. 5 is a kind of structural schematic diagram of speed control circuit provided in an embodiment of the present invention；
Fig. 6 is a kind of molten aluminum degasification air supply controller schematic diagram that one embodiment of the invention provides.
Specific embodiment
The present invention is further described in detail below with reference to the accompanying drawings and embodiments.It should be appreciated that described herein
Specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
It referring to Figure 1, is a kind of molten aluminum degasification provided in an embodiment of the present invention for the corresponding system structure of pneumatic control method
Schematic diagram, the system comprises: molten aluminum tank, sampler, controller 1 and hydrogen-measuring apparatus 2, the ingredient being connect with the controller 1
Analyzer 5, temperature sensor 3, galvanometer 4, inert gas tube, proportioning valve 6；
As an implementation, the material of the sampler can be the fusing point any material higher than aluminium alloy, in reality
The selection of adaptability can be carried out in the application of border according to working condition and field condition.The molten aluminum of the predetermined volume can be
1L, 5L or 10L.Such as, irony sampler acquires 1L molten aluminum from molten aluminum container, and the 1L molten aluminum is moved to closed appearance
Device is full of nitrogen in the closed container；After the 1L molten aluminum is moved to closed container, closed container completely cut off inner space with
Exterior space is to form confined space.
As an implementation, the temperature sensor 3 can be bimetallic temperature transducer, glass precursor solution temperature passes
Sensor, pressure type temperature sensor, resistance temperature sensor, thermistor and thermoelectric couple, can also be optics high temp sensitive
Device, radiation high-temperature sensor or colour temperature sensor.
Fig. 2 is referred to, is a kind of structural schematic diagram of hydrogen-measuring apparatus provided in an embodiment of the present invention, the hydrogen-measuring apparatus 2
Including horizontally disposed cylindrical container 11, the material mouth 12 being arranged on the chamber wall of the cylindrical container 11 and with the material mouth 12
The material mouth lid 13 of pivotable connection, the nitrogen valve 14 being connected with the cylindrical container 11, heating wire 15；The cylindrical container
11 include the first end and second end positioned at 11 both ends of cylindrical container, and the first end is sealed by the first metal plate 16,
The second end is sealed by the second metal plate 17；First metal plate 16 is connected by conducting wire respectively with the second metal plate 17
In the positive and negative anodes of constant voltage source, wherein be connected with first switch 18 on the conducting wire；The controller 11 is by controlling the material
The folding of lid 13 is to control the opening and closing of the cylindrical container 11；The heating wire 15 is outside the cylindrical container 11
Side setting, the heating wire 15 are connected with second switch 19；
As an implementation, the power supply can be 12V, 36V or 72V；The of the cylindrical container 11
The material of one metal plate 16 and the second metal plate 17 is the fusing point conductive material higher than aluminium alloy fusing point.The power supply is filling
There is on the first metal plate 16 and the second metal plate 17 of the cylindrical container of the molten aluminum making alive E to constitute circuit.
The top of the aluminium vessel cavity is arranged in the analytical instrument 5；Fig. 3 is referred to, is mentioned for the embodiment of the present invention
A kind of structural schematic diagram of the snoot supplied, the analytical instrument includes snoot 22 and X-ray receiver 21, the snoot
22 is in the shape of a trumpet, and the X-ray receiver 21 is arranged on the horn mouth central axis of the snoot 22, the X receiver
The setting of horn mouth described in 21 receiving end face；
The temperature sensor 3 is arranged in 11 chamber of cylindrical container；
The galvanometer 4 is arranged around the cylindrical container 11；
The inert gas tube is connected with the proportioning valve 6, and inert gas is sent into molten aluminum by the inert gas tube；
Fig. 4 is referred to, is a kind of flow diagram of the molten aluminum degasification provided in an embodiment of the present invention for pneumatic control method, institute
The method of stating includes:
Step S1: the material mouth lid is opened in control；
Step S2: it controls the temperature sensor and acquires the cylindrical container chamber indoor temperature value, when the temperature value is low
When the minimum value of the first given threshold range, the controller controls the second switch and connects；When the temperature value is
When within the scope of one given threshold, the second switch that the controller controls the heating wire is disconnected；Wherein, first setting
Threshold range is so that the molten aluminum is maintained at liquid and the temperature value that is arranged；
Step S3: it controls the nitrogen valve and opens to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
Step S4: the material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum；
As an implementation, the galvanometer 4 can be moving coil galvanometer, ballistic galvanometer or photoelectricity amplifying type
Galvanometer；The galvanometer 4 is used to detect the power supply and constitutes with two metal plates of cylindrical container equipped with the molten aluminum
Circuit in electric current I.Conductivityσ=I/E of the molten aluminum is calculated according to the electric current, according to molten aluminum conductivityσ with
The corresponding relationship of molten aluminum hydrogen content determines the molten aluminum hydrogen content.
Step S5: acquiring the X-ray issued in the molten aluminum by the X-ray receiver, carries out spectrum point to the X-ray
Analysis, determines the major metal component for including in the molten aluminum；It is passed through in the molten aluminum tank according to major metal component selection
The type of inert gas；
Here, molten aluminum ingredient can be aluminium content 99.6% or more the fine aluminium of 1XXX series, aluminium content is 9.26%
Above and copper content the aluminum bronze of the 2XXX series of 3%-5%, aluminium content 97% or more and manganese content 1%-1.5%'s
The aluminium manganese of 3XXX series, aluminium content 92% or more and silicone content exist in the aluminium silicon of the 4XXX series of 4.5%-6%, aluminium content
93% or more and content of magnesium the magnalium of the 5XXX series of 4%-5%, aluminium content 95% or more and silicone content in 0.4%-
The aluminium silicon of 0.8% 6XXX series, aluminium content 90% or more and Zn content the 7XXX series of 5%-6% aluminium zinc, 8XXX
Other aluminium alloys of series or the spare aluminium alloy of 9XXX series.
Here, inert gas can be one or more of nitrogen, argon gas and carbon tetrachloride gas, according to molten aluminum at
Point, the corresponding steam supply valve of one or more of control nitrogen, argon gas and carbon tetrachloride gas is opened, and corresponding gas is supplied.
For example molten aluminum ingredient, when being the fine aluminium of 1XXX series, corresponding inert nitrogen gas, the then steam supply valve for controlling nitrogen is connected, supply nitrogen
Gas；For example molten aluminum ingredient, when being the aluminum bronze of 2XXX series, corresponding inert gas argon gas, the controller controls the steam supply valve of argon gas
It connects, supplies argon gas；For another example, when molten aluminum ingredient is the aluminium manganese of 3XXX series, corresponding inert nitrogen gas and carbon tetrachloride gas
The mixed gas of body, the steam supply valve that the controller then controls nitrogen are connected, the supply of nitrogen, while controlling carbon tetrachloride gas
Steam supply valve is connected, and carbon tetrachloride gas is supplied.In practical applications, molten aluminum ingredient is with the specific corresponding relationship of inert gas by phase
The production technology answered determines that it is not limited in the embodiment of the present invention.
Step S6: according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of the proportioning valve is controlled to control the input quantity of the inert gas；Wherein, when first difference is greater than the
When one given threshold, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is small
When the first given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas.
As an implementation, when judgement needs to increase the output of inert gas, then a control signal, the control are exported
Signal processed can be the voltage signal of 0-10V, be also possible to the current signal of 4-20mA, the proportioning valve of control output inert gas
Opening becomes larger.Wherein, if the control signal is the voltage signal of 0-10V, it can be 0V and correspond to proportioning valve extent of opening 0%
(close), 5V correspond to proportioning valve extent of opening 50%, and 10V corresponds to proportioning valve extent of opening 100% (i.e. standard-sized sheet, at this time inertia
The output flow of gas reaches maximum), it is also possible to 0V and corresponds to proportioning valve extent of opening 100% (i.e. standard-sized sheet, at this time inert gas
Output flow reach maximum), 5V corresponds to proportioning valve extent of opening 50%, and 10V corresponds to proportioning valve extent of opening 0%；If the
One control signal is the current signal of 4-20mA, can be 4mA and corresponds to proportioning valve extent of opening 0%, 12mA corresponds to proportioning valve and opens
Mouth degree 50%, 20mA correspond to proportioning valve extent of opening 100%, are also possible to 4mA and correspond to proportioning valve extent of opening 100%,
12mA corresponds to proportioning valve extent of opening 50%, and 20mA corresponds to proportioning valve extent of opening 0%.The wherein ratio of control output inert gas
If example valve opening, which becomes larger, may is that the extent of opening of proportioning valve at this time is 20%, the extent of opening for controlling proportioning valve is become greater to
25%, 30% or 50% etc., to increase the output flow of inert gas.
Molten aluminum degasification provided in an embodiment of the present invention is acquired in molten aluminum for pneumatic control method and system by X-ray receiver
The X-ray of sending carries out spectrum analysis to X-ray, determines the major metal component for including in molten aluminum；It is determined according to major metal component
Need to be passed through the type of inert gas in the molten aluminum tank；According to the standard hydrogen of hydrogen content and setting in cylindrical container molten aluminum
First difference of Gas content controls the opening amplitude of proportioning valve to control the input quantity of inert gas；Wherein, when the first difference is big
When the first given threshold, control proportioning valve opening becomes larger to increase the input of the inert gas；When the first difference is less than
When one given threshold, control proportioning valve opening becomes smaller to reduce the input of inert gas.Method energy provided in an embodiment of the present invention
It enough obtains the hydrogen content in molten aluminum and determines the ingredient of molten aluminum, and inert gas is carried out based on hydrogen content and molten aluminum ingredient
Selection and accurate input quantity automatically control, and dehydrogenation effect is good and can save inert gas.
Wherein, the system also includes the rotor electric machines being electrically connected with the controller, and the rotor electric machine is for driving
Rotor stirs the molten aluminum in the molten aluminum tank；The method also includes:
The revolving speed of the rotor electric machine is controlled according to first difference；When first difference is greater than the first given threshold
When, first control signal is exported, the revolving speed control electric current for controlling the rotor electric machine becomes larger；When first difference is less than or waits
When the first given threshold, second control signal is exported, the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, the system also includes speed probe, the speed probe is connect with the controller；As one kind
Embodiment, the speed probe can be Mageneto-sensitive type speed probe, laser type speed probe, magnetoelectric tachometric sensing
Device, capacitive tachometer transducer or variable reluctance speed probe etc..
After the revolving speed for controlling the rotor electric machine according to first difference, further includes:
Control the tachometer value that the sensor acquires the rotor electric machine；
According to the of the corresponding rated speed value of the revolving speed of the tachometer value of the rotor electric machine and motor control electric current
Two differences adjust the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, third control is exported
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become smaller；It is defeated when second difference is less than the second given threshold
4th control signal out, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second setting
When threshold value, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, the system also includes air supply motor and starter, the air supply motor by starter with it is described
Controller connection, before executing the method, further includes: send air-supply enabled instruction to the starter, and control institute
It states starter and the air supply motor is opened according to the air-supply enabled instruction.
A kind of molten aluminum degasification supplies control system, the system comprises: molten aluminum tank, sampler, controller, output module,
Input module and the hydrogen-measuring apparatus being connect with the controller, analytical instrument, temperature sensor, galvanometer, inert gas tube,
Proportioning valve；
The hydrogen-measuring apparatus include on the chamber wall of horizontally disposed cylindrical container, the cylindrical container material mouth that is arranged and
With the material mouth lid of the material mouth pivotable connection, the nitrogen valve being connected with the cylindrical container；The cylindrical container includes
First end and second end positioned at the cylindrical container both ends, the first end are sealed by the first metal plate, the second end
It is sealed by the second metal plate；First metal plate and the second metal plate pass through conducting wire respectively and are connected to the positive and negative of constant voltage source
Pole, wherein be connected with first switch on the conducting wire；The controller is controlled described by controlling the folding of the material mouth lid
The opening and closing of cylindrical container；
The top of the aluminium vessel cavity is arranged in the analytical instrument；The analytical instrument includes snoot and X
Optical receiver, the snoot is in the shape of a trumpet, and the horn mouth central axis of the snoot is arranged in the X-ray receiver
On, the setting of horn mouth described in the receiving end face of the X receiver；
The heating wire setting, heating wire on the outside of the cylindrical container are connected with second switch；The temperature
Sensor is arranged in the cylindrical container chamber；The galvanometer is arranged around the cylindrical container；The inert gas tube
It is connected with the proportioning valve, inert gas is sent into molten aluminum by the inert gas tube；The hydrogen-measuring apparatus, the ingredient point
Analyzer is connect with the input module respectively；The proportioning valve is connect with the output module；The controller is total by data
Line is connect with the input module and output module respectively；Wherein,
The controller issues control signal to the output module for receiving the signal of the input module；
The controller is also used to: the material mouth lid is opened in control；It controls the temperature sensor and acquires the cylindricality appearance
Device chamber indoor temperature value, when the temperature value is lower than the first given threshold range, the controller controls the second switch
It connects；When the temperature value is equal to the first given threshold range, the second switch that the controller controls the heating wire is disconnected
It opens；Wherein, the first given threshold range is so that the molten aluminum is maintained at liquid and the temperature value that is arranged；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum.
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines institute
State the major metal component for including in molten aluminum；Need to be passed through indifferent gas in the molten aluminum tank according to major metal component determination
The type of body；
Institute is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of proportioning valve is stated to control the input quantity of the inert gas；Wherein, when first difference is greater than the first setting
When threshold value, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is less than first
When given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas；
The input module, for obtaining the hydrogen content in the closed container by the hydrogen-measuring apparatus；It is also used to
The major metal component that the molten aluminum includes is determined by the analytical instrument；
The output module, for controlling the opening amplitude of the proportioning valve.
Wherein, Fig. 5 is referred to, is a kind of structural schematic diagram of speed control circuit provided in an embodiment of the present invention, it is described
System further includes the rotor electric machine 42 being electrically connected with the controller 41, and the rotor electric machine 42 is for driving described in rotor stirring
Molten aluminum in molten aluminum tank；The controller is also used to control the revolving speed of the rotor electric machine 42 according to first difference；Work as institute
When stating the first difference greater than the first given threshold, first control signal is exported, controls the revolving speed control electricity of the rotor electric machine 42
Rheology is big；When first difference is less than or equal to the first given threshold, second control signal is exported, controls the rotor electricity
The revolving speed control electric current of machine 42 is constant.
Wherein, the system also includes speed probe 43, the speed probe 43 is connect with the controller 41；Institute
After stating the revolving speed for controlling the rotor electric machine 42 according to first difference, the controller 41 is also used to:
Control the tachometer value that the sensor 43 acquires the rotor electric machine 42；
According to the tachometer value of the rotor electric machine 42 rated speed value corresponding with the revolving speed of motor control electric current
Second difference adjusts the revolving speed of the rotor electric machine 42；Wherein, when second difference is greater than the second given threshold, output the
Three control signals, the revolving speed control electric current for controlling the rotor electric machine 42 become smaller；When second difference is less than the second setting threshold
When value, the 4th control signal of output, the revolving speed control electric current for controlling the rotor electric machine 42 becomes larger；When second difference is equal to
When the second given threshold, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Wherein, further includes: air supply motor 44, contactor 45, breaker 46；The three phase mains of the air supply motor 44 inputs
It connects respectively with the three-phase electrical contact contact of the three-phase of the contactor 45 electrical contact contact, breaker 46 and accesses three-phase in port
Power supply；The control coil 47 of the contactor 45 connects with the Auxiliary control switch 48 of the breaker 46 and accesses the control
The digital power output port of device 41.
Wherein, the output module includes frequency converter 49, the three-phase power input end mouth of the rotor electric machine 42 with it is described
The three-phase output end mouth of frequency converter 49 is connected respectively；The three-phase input port of the frequency converter 49 passes through breaker 46 respectively
Three-phase electrical contact contact series connection access three phase mains.
Fig. 6 is referred to, for a kind of molten aluminum degasification air supply controller that one embodiment of the invention provides, including memory
51, processor 52 and it is stored in the computer program run on the memory, the processor 52 executes the computer journey
Include realizing following steps when sequence: the material mouth lid is opened in control；
It controls the temperature sensor and acquires the cylindrical container chamber indoor temperature value, when the temperature value is set lower than first
When determining the minimum value of threshold range, the controller controls the second switch and connects；When the temperature value sets threshold first
When within the scope of value, the second switch that the controller controls the heating wire is disconnected；Wherein, the first given threshold range
The temperature value being arranged to make the molten aluminum be maintained at liquid；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum；
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines institute
State the major metal component for including in molten aluminum；Inert gas in the molten aluminum tank is passed through according to major metal component selection
Type；
Institute is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of proportioning valve is stated to control the input quantity of the inert gas；Wherein, when first difference is greater than the first setting
When threshold value, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is less than first
When given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas.
Here, the processor 52 is also used to realize: the revolving speed of the rotor electric machine is controlled according to first difference；When
When first difference is greater than the first given threshold, first control signal is exported, controls the revolving speed control electricity of the rotor electric machine
Rheology is big；When first difference is less than or equal to the first given threshold, second control signal is exported, controls the rotor electricity
The revolving speed control electric current of machine is constant.
Here, the processor 52 is also used to realize: controlling the tachometer value that the sensor acquires the rotor electric machine；
According to the of the corresponding rated speed value of the revolving speed of the tachometer value of the rotor electric machine and motor control electric current
Two differences adjust the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, third control is exported
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become smaller；It is defeated when second difference is less than the second given threshold
4th control signal out, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second setting
When threshold value, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Here, the processor 52 is also used to realize: sending air-supply enabled instruction to the starter, and described in control
Starter opens the air supply motor according to the air-supply enabled instruction.
The embodiment of the present invention provides a kind of computer storage medium, and calculating is stored on the computer readable storage medium
Machine program, the computer program realize following steps by processor:
The material mouth lid is opened in control；
It controls the temperature sensor and acquires the cylindrical container chamber indoor temperature value, when the temperature value is set lower than first
When determining the minimum value of threshold range, the controller controls the second switch and connects；When the temperature value sets threshold first
When within the scope of value, the second switch that the controller controls the heating wire is disconnected；Wherein, the first given threshold range
The temperature value being arranged to make the molten aluminum be maintained at liquid；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, it controls the nitrogen valve and closes and control the sampler and acquired from the molten aluminum tank
Preset vol molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；
By galvanometer detection by the size of current of molten aluminum with the conductivity of the determination molten aluminum；Pass through the conductivity, institute
The mapping relations for stating conductivity and molten aluminum hydrogen content determine hydrogen content in the cylindrical container molten aluminum；
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines institute
State the major metal component for including in molten aluminum；Inert gas in the molten aluminum tank is passed through according to major metal component selection
Type；
Institute is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of proportioning valve is stated to control the input quantity of the inert gas；Wherein, when first difference is greater than the first setting
When threshold value, controls the proportioning valve opening and become larger to increase the input of the inert gas；When first difference is less than first
When given threshold, controls the proportioning valve opening and become smaller to reduce the input of the inert gas.
Here, it is also used to realize when the processor executes the computer program: institute is controlled according to first difference
State the revolving speed of rotor electric machine；When first difference is greater than the first given threshold, first control signal is exported, control is described to be turned
The revolving speed control electric current of sub-motor becomes larger；When first difference is less than or equal to the first given threshold, the second control of output
Signal, the revolving speed control electric current for controlling the rotor electric machine are constant.
Here, it is also used to realize when the processor executes the computer program: control described in the sensor acquisition
The tachometer value of rotor electric machine；
According to the of the corresponding rated speed value of the revolving speed of the tachometer value of the rotor electric machine and motor control electric current
Two differences adjust the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, third control is exported
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become smaller；It is defeated when second difference is less than the second given threshold
4th control signal out, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second setting
When threshold value, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
Here, it is also used to realize when the processor executes the computer program: sending and blow to the starter
Enabled instruction, and control the starter and the air supply motor is opened according to the air-supply enabled instruction.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and scope of the present invention is all contained in protection model of the invention
Within enclosing.
Claims (11)
1. a kind of molten aluminum degasification is applied to molten aluminum degasification and supplies control system, which is characterized in that the system for pneumatic control method
Include: molten aluminum tank, sampler, controller and the hydrogen-measuring apparatus being connect with the controller, analytical instrument, temperature sensor,
Galvanometer, inert gas tube, proportioning valve；
The hydrogen-measuring apparatus include horizontally disposed cylindrical container, the material mouth being arranged on the chamber wall of the cylindrical container and with
The material mouth lid of the material mouth pivotable connection, nitrogen valve, the heating wire being connected with the cylindrical container；The cylindrical container
First end and second end including being located at the cylindrical container both ends, the first end is by the sealing of the first metal plate, and described the
Two ends are sealed by the second metal plate；First metal plate and the second metal plate pass through conducting wire respectively and are connected to constant voltage source
Positive and negative anodes, wherein be connected with first switch on the conducting wire；The controller is by controlling the folding of the material mouth lid to control
The opening and closing of the cylindrical container；
The top of the aluminium vessel cavity is arranged in the analytical instrument；The analytical instrument includes that snoot and X-ray connect
Device is received, the snoot is in the shape of a trumpet, and the X-ray receiver is arranged on the horn mouth central axis of the snoot, institute
State the setting of horn mouth described in the receiving end face of X receiver；
The heating wire setting, heating wire on the outside of the cylindrical container are connected with second switch；
The temperature sensor is arranged in the cylindrical container chamber；
The galvanometer is arranged around the cylindrical container；
The inert gas tube is connected with the proportioning valve, and inert gas is sent into molten aluminum by the inert gas tube；
The described method includes:
The material mouth lid is opened in control；
It controls the temperature sensor and acquires the cylindrical container chamber indoor temperature value, when the temperature value is lower than the first setting threshold
When being worth the minimum value of range, the controller controls the second switch and connects；When the temperature value is in the first given threshold model
When within enclosing, the second switch that the controller controls the heating wire is disconnected；Wherein, the first given threshold range is to make
Obtain the temperature value that the molten aluminum is maintained at liquid and is arranged；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, control the nitrogen valve close and control the sampler acquired from the molten aluminum tank it is default
Volume molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；Pass through
The galvanometer detection is by the size of current of molten aluminum with the conductivity of the determination molten aluminum；By the conductivity, described lead
Electric rate and the mapping relations of molten aluminum hydrogen content determine the hydrogen content in the cylindrical container molten aluminum；
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines the aluminium
The major metal component for including in liquid；The kind of inert gas in the molten aluminum tank is passed through according to major metal component selection
Class；
The ratio is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of example valve is to control the input quantity of the inert gas；Wherein, when first difference is greater than the first given threshold
When, it controls the proportioning valve opening and becomes larger to increase the input of the inert gas；When first difference is less than the first setting
When threshold value, controls the proportioning valve opening and become smaller to reduce the input of the inert gas.
2. the method according to claim 1, wherein the system also includes what is be electrically connected with the controller to turn
Sub-motor, the rotor electric machine is for driving rotor to stir the molten aluminum in the molten aluminum tank；The method also includes:
The revolving speed of the rotor electric machine is controlled according to first difference；When first difference is greater than the first given threshold,
First control signal is exported, the revolving speed control electric current for controlling the rotor electric machine becomes larger；When first difference is less than or equal to
When the first given threshold, second control signal is exported, the revolving speed control electric current for controlling the rotor electric machine is constant.
3. according to the method described in claim 2, it is characterized in that, the revolving speed passes the system also includes speed probe
Sensor is connect with the controller；After the revolving speed for controlling the rotor electric machine according to first difference, further includes:
Control the tachometer value that the sensor acquires the rotor electric machine；
It is poor according to the second of the tachometer value of rotor electric machine rated speed value corresponding with the revolving speed of motor control electric current
Value adjusts the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, output third control letter
Number, the revolving speed control electric current for controlling the rotor electric machine becomes smaller；When second difference is less than the second given threshold, output the
Four control signals, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second given threshold
When, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
4. the method according to claim 1, wherein the system also includes air supply motor and starter, institute
It states air supply motor to connect by starter with the controller, before executing the method, further includes: fill to the starting
Transmission air-supply enabled instruction is set, and controls the starter and the air supply motor is opened according to the air-supply enabled instruction.
5. a kind of molten aluminum degasification supplies control system, which is characterized in that the system comprises: molten aluminum tank, sampler, controller,
It is output module, input module and the hydrogen-measuring apparatus being connect with the controller, analytical instrument, temperature sensor, galvanometer, lazy
Property flue, proportioning valve；
The hydrogen-measuring apparatus include on the chamber wall of horizontally disposed cylindrical container, the cylindrical container material mouth that is arranged and with institute
The material mouth lid for stating material mouth pivotable connection, the nitrogen valve being connected with the cylindrical container；The cylindrical container includes being located at
The first end and second end at the cylindrical container both ends, the first end are sealed by the first metal plate, and the second end passes through
The sealing of second metal plate；First metal plate and the second metal plate pass through the positive and negative anodes that conducting wire is connected to constant voltage source respectively,
Wherein, first switch is connected on the conducting wire；The controller is by controlling the folding of the material mouth lid to control the column
Describe the opening and closing of device；
The top of the aluminium vessel cavity is arranged in the analytical instrument；The analytical instrument includes that snoot and X-ray connect
Device is received, the snoot is in the shape of a trumpet, and the X-ray receiver is arranged on the horn mouth central axis of the snoot, institute
State the setting of horn mouth described in the receiving end face of X receiver；
The heating wire setting, heating wire on the outside of the cylindrical container are connected with second switch；The temperature sensing
Device is arranged in the cylindrical container chamber；The galvanometer is arranged around the cylindrical container；The inert gas tube and institute
It states proportioning valve to be connected, inert gas is sent into molten aluminum by the inert gas tube；The hydrogen-measuring apparatus, the analytical instrument
It is connect respectively with the input module；The proportioning valve is connect with the output module；The controller passes through data/address bus point
It is not connect with the input module and output module；Wherein,
The controller issues control signal to the output module for receiving the signal of the input module；
The controller is also used to: the material mouth lid is opened in control；It controls the temperature sensor and acquires the cylindrical container chamber
Indoor temperature value, when the temperature value is lower than the first given threshold range, the controller controls the second switch and connects；
When the temperature value is equal to the first given threshold range, the second switch that the controller controls the heating wire is disconnected；Its
In, the first given threshold range is so that the molten aluminum is maintained at liquid and the temperature value that is arranged；
The nitrogen valve is controlled to open to be passed through nitrogen into the cylindrical container and start the clock；
After the preset lime, control the nitrogen valve close and control the sampler acquired from the molten aluminum tank it is default
Volume molten aluminum is simultaneously moved into the molten aluminum in the cylindrical container by the material mouth；
The material mouth lid is closed in control；
The first switch closure is controlled, constant voltage is applied to the molten aluminum in the cylindrical container by the conducting wire；Pass through
The galvanometer detection is by the size of current of molten aluminum with the conductivity of the determination molten aluminum；By the conductivity, described lead
Electric rate and the mapping relations of molten aluminum hydrogen content determine the hydrogen content in the cylindrical container molten aluminum.
The X-ray issued in the molten aluminum is acquired by the X-ray receiver, spectrum analysis is carried out to the X-ray, determines the aluminium
The major metal component for including in liquid；Need to be passed through inert gas in the molten aluminum tank according to major metal component determination
Type；
The ratio is controlled according to the first difference of the standard hydrogen content of hydrogen content and setting in the cylindrical container molten aluminum
The opening amplitude of example valve is to control the input quantity of the inert gas；Wherein, when first difference is greater than the first given threshold
When, it controls the proportioning valve opening and becomes larger to increase the input of the inert gas；When first difference is less than the first setting
When threshold value, controls the proportioning valve opening and become smaller to reduce the input of the inert gas；
The input module, for obtaining the hydrogen content in the closed container by the hydrogen-measuring apparatus；It is also used to pass through
The analytical instrument determines the major metal component that the molten aluminum includes；
The output module, for controlling the opening amplitude of the proportioning valve.
6. system according to claim 5, which is characterized in that the system also includes what is be electrically connected with the controller to turn
Sub-motor, the rotor electric machine is for driving rotor to stir the molten aluminum in the molten aluminum tank；The controller is also used to according to institute
State the revolving speed that the first difference controls the rotor electric machine；When first difference is greater than the first given threshold, the first control of output
Signal processed, the revolving speed control electric current for controlling the rotor electric machine become larger；When first difference is less than or equal to the first setting threshold
When value, second control signal is exported, the revolving speed control electric current for controlling the rotor electric machine is constant.
7. system according to claim 6, which is characterized in that the system also includes speed probe, the revolving speed is passed
Sensor is connect with the controller；After the revolving speed for controlling the rotor electric machine according to first difference, the control
Device is also used to:
Control the tachometer value that the sensor acquires the rotor electric machine；
It is poor according to the second of the tachometer value of rotor electric machine rated speed value corresponding with the revolving speed of motor control electric current
Value adjusts the revolving speed of the rotor electric machine；Wherein, when second difference is greater than the second given threshold, output third control letter
Number, the revolving speed control electric current for controlling the rotor electric machine becomes smaller；When second difference is less than the second given threshold, output the
Four control signals, the revolving speed control electric current for controlling the rotor electric machine become larger；When second difference is equal to the second given threshold
When, output the 5th controls signal, and the revolving speed control electric current for controlling the rotor electric machine is constant.
8. system according to claim 5, which is characterized in that further include: air supply motor, contactor, breaker；It is described to send
The three-phase power input end mouth of wind turbine is in electrical contact with the three-phase of the three-phase of contactor electrical contact contact, breaker touches respectively
Head connects and accesses three phase mains；The control coil of the contactor is connected and is accessed with the Auxiliary control switch of the breaker
The digital power output port of the controller.
9. system according to claim 6, which is characterized in that the output module includes frequency converter, the rotor electric machine
Three-phase power input end mouth and the three-phase output end mouth of the frequency converter be connected respectively；The three-phase input of the frequency converter
Port passes through the three-phase electrical contact contact series connection access three phase mains of breaker respectively.
10. a kind of molten aluminum degasification air supply controller including memory, processor and is stored in the meter run on the memory
Calculation machine program, it is characterised in that: the processor realizes such as any one of claims 1 to 4 when executing the computer program
The molten aluminum degasification is for pneumatic control method.
11. a kind of computer readable storage medium, computer program, the meter are stored on the computer readable storage medium
Calculation machine program realizes molten aluminum degasification according to any one of claims 1 to 4 for pneumatic control method when being executed by processor.
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|---|---|---|---|
| CN201811068997.9A CN109136587A (en) | 2018-09-13 | 2018-09-13 | Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium |
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| CN201811068997.9A CN109136587A (en) | 2018-09-13 | 2018-09-13 | Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium |
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Application publication date: 20190104 |