CN110510866A - A kind of the technique electric control method and control device of all-electric melting kiln - Google Patents
A kind of the technique electric control method and control device of all-electric melting kiln Download PDFInfo
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- CN110510866A CN110510866A CN201910785183.5A CN201910785183A CN110510866A CN 110510866 A CN110510866 A CN 110510866A CN 201910785183 A CN201910785183 A CN 201910785183A CN 110510866 A CN110510866 A CN 110510866A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/07—Controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
- C03B37/09—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates electrically heated
- C03B37/092—Direct-resistance heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Disclose the technique electric control method and control device of a kind of all-electric melting kiln, kiln includes furnace body and positioned at furnace intracorporal interconnected fusion zone and heat preservation zone, and the feed opening and bushing being connected to respectively with fusion zone and heat preservation zone, control method includes: that cullet are added into fusion zone, first Si-Mo rod group room for promotion temperature is controlled using constant current mode, cullet is made to be molten into glass metal；Start the second Si-Mo rod group in heat preservation zone, space temperature is increased using constant current mode；Basalt particle is added into fusion zone makes it be molten into basalt liquid, is constant temperature mode by the control mode switch of the first Si-Mo rod group and the second Si-Mo rod group when basalt liquid reaches the liquid level that bushing needs；And glass metal is displaced kiln by starting bushing, and after the temperature of fusion zone and heat preservation zone is risen to steady temperature, control bushing carries out wire-drawing operation at a constant temperature.The control of fusion zone space temperature uses different control models, extends the Si-Mo rod service life.
Description
Technical field
The present invention relates to field of information security technology, and in particular to a kind of technique electric control method of all-electric melting kiln and
Control device.
Background technique
Basalt continuous fiber after 1450 DEG C~1500 DEG C meltings, is closed by platinum rhodium using basalt ore as raw material
Continuous fiber made of golden bushing high speed pulling also has resistance to high/low temperature in addition to having the characteristics that high-intensitive, high-modulus
The excellent properties such as property, acid and alkali-resistance, anti-oxidant, anti-radiation, thermal acoustic insulation, fire protection flame retarding, therefore, basalt fibre can answer extensively
For fields such as fire-fighting, environmental protection, aerospace, military project, automobile shipbuilding, engineering plastics and buildings.
Basalt is due to fusion temperature height, the factors such as color is black, erosion is big, cannot improve it always and melt effect, at present
Existing basalt fiber production equipment heat source mainly based on gas heating, cannot be guaranteed combustion gas in many places in China
Continuous-stable supply, this has seriously affected the utilization and extention of basalt fibre project and exploitation, big with basalt industry
Power development gradually starts using electric power as the energy, but existing electric heating smelting furnace has the defects of difficult fusing, low efficiency, and
Develop in terms of its process control and electric control system it is not perfect, be easy to cause fusing it is bad, level control is unstable,
The unstable problem of wire drawing.
Summary of the invention
In view of this, present invention generally provides a kind of technique electric-controlleds of all-electric melting kiln for basalt fibre production
Method processed and control device, by reducing space temperature control in fusion zone using different modes, by electric current in different times
Surge to Si-Mo rod improves the service life, and reaches closed-loop control, improves the quality of production and efficiency.
According to a first aspect of the present invention, a kind of technique electric control method of all-electric melting kiln is provided, the kiln includes
Furnace body and positioned at furnace intracorporal interconnected fusion zone and heat preservation zone, and the charging being connected to respectively with fusion zone and heat preservation zone
Mouth and bushing, the control method include:
Cullet are added into the fusion zone, the first Si-Mo rod group room for promotion temperature is controlled using constant current mode,
The cullet are made to be molten into glass metal；
Start the second Si-Mo rod group in the heat preservation zone, heat preservation zone space temperature is increased using constant current mode；
Basalt particle is added into the fusion zone makes it be molten into basalt liquid, when the basalt liquid reaches
It is constant temperature by the control mode switch of the first Si-Mo rod group and the second Si-Mo rod group when the liquid level that the bushing needs
Mode；
The glass metal is displaced the kiln by starting bushing, and by the temperature liter of the fusion zone and the heat preservation zone
To steady temperature, controls the bushing and carry out wire-drawing operation at a constant temperature.
Preferably, the control method further include: needed when the raw material in the fusion zone forms refractory particle or kiln
When stopping working, start blowing hole, to its electrified regulation, the raw material in the fusion zone is released.
Preferably, the control method further include: before starting work, start the first Si-Mo rod group, make its work
In constant voltage mode, the profiling temperatures of the kiln are judged accordingly, calculate kiln running parameter.
Preferably, the control method further include: after the first Si-Mo rod group and the second Si-Mo rod group starting,
Control method is detected using intermittent disconnected stick, successively detects the voltage at primary all Si-Mo rod both ends, judgement every same time
The on-off and its operating status of all Si-Mo rods.
Preferably, the control method further include: after the cullet are molten into glass metal, start in the fusion zone
Immersion molybdenum plate, the temperature of the glass metal is controlled using the first pid control algorithm；Described in being reached when the basalt liquid
When the liquid level that bushing needs, the temperature of the basalt solution is controlled using the second pid control algorithm.
Preferably, before starting the second Si-Mo rod group, the cullet and the glass metal are in the fusion zone
When interior, the molybdenum plate is covered, and does not contact the first Si-Mo rod group.
Preferably, the proportion function in first pid control algorithm is only the function of fluid temperature, the 2nd PID
Proportion function in control algolithm is the function of liquid level, kiln size, charging frequency and resistivity.
Preferably, the expression formula of the proportion function of first pid control algorithm is e (t)=T2-T1, the 2nd PID
The expression formula of the proportion function of control algolithm is
Preferably, the proportion function in second pid control algorithm is only liquid level, kiln size and resistivity
Function.
Preferably, cullet are added in the fusion zone Xiang Suoshu, the first Si-Mo rod group is controlled using constant current mode and promotes sky
Between temperature, the step of making the cullet be molten into glass metal includes:
Cullet are paved in the fusion zone, the cullet cover all and are higher than immersion molybdenum plate, and are lower than
The position of the first Si-Mo rod group in the fusion zone space；
Start the first Si-Mo rod group, is heated up using space temperature of the constant current mode to the fusion zone；
The cullet melt successively, and the cullet are added to the fusion zone again, guarantee that material position is higher than immersion
Molybdenum plate, until the cullet are fused into the glass metal；
Start the immersion molybdenum plate to promote the temperature of glass liquid, heating heating-up furnace is carried out to the kiln.
Preferably, start the first Si-Mo rod group, starting the second Si-Mo rod group, the starting bushing pass through to
The first Si-Mo rod group, the second Si-Mo rod group and the bushing electrified regulation are realized.
Preferably, after starting the first Si-Mo rod group and the second Si-Mo rod group, according to heating-up furnace heating process curve to institute
Fusion zone and the heat preservation zone is stated to heat up.
Preferably, when the glass metal is displaced the kiln by starting bushing, constantly to described in the addition of the fusion zone
Basalt particle, and the basalt liquid is made constantly to flow to the bushing.
According to a second aspect of the present invention, a kind of technique electrical control gear of all-electric melting kiln is provided, comprising:
Fusion zone space temperature control module is used for after cullet are added into the fusion zone, using constant current mould
Formula controls the first Si-Mo rod group room for promotion temperature, so that the cullet is molten into glass metal, and in the basalt liquid
It is constant temperature mode by the control mode switch of the first Si-Mo rod group when reaching the liquid level that the bushing needs；
Heat preservation zone space temperature control module, for starting the second Si-Mo rod group in the heat preservation zone, using constant current
Mode increases space temperature, and when the basalt liquid reaches the liquid level that the bushing needs, by the second silicon molybdenum
The control mode switch of stick group is constant temperature mode；And
Nozzle plate temperature control module controls the leakage for starting after the glass metal displaces the kiln by bushing
Plate carries out wire-drawing operation at a constant temperature.
Preferably, the control device further include: intermittent disconnected stick detects control module, in first Si-Mo rod
After group and the second Si-Mo rod group starting, control method is detected using intermittent disconnected stick, successively detects one every same time
The voltage at secondary all Si-Mo rod both ends, judges the on-off of all Si-Mo rods.
Preferably, the control device further include: fusion zone fluid temperature control module, for being melted when the cullet
After glass metal, starts the immersion molybdenum plate in the fusion zone, the temperature of the glass metal is controlled using the first pid control algorithm
Degree；And when the basalt liquid reaches the liquid level that the bushing needs, controlled using the second pid control algorithm described profound
The temperature of military karst liquid.
Preferably, the fusion zone space temperature control module is also used to: before starting work, starting the first silicon molybdenum
Stick group, makes it work in constant voltage mode, judges the profiling temperatures of the kiln accordingly, provides kiln running parameter.
Preferably, the proportion function in first pid control algorithm is only the function of fluid temperature, the 2nd PID
Proportion function in control algolithm is the function of liquid level, kiln size, charging frequency and resistivity.
The technique electric control method and control device of all-electric melting kiln provided in an embodiment of the present invention, by basalt
In the production process of fiber, to the control different control model (examples that section uses in different times of fusion zone space temperature
Such as constant current controlling, thermostatic control), it realizes the flexible switching of temperature control mode, in constant current controlling mode, reduces electric current
Surge to Si-Mo rod extends the service life (reducing its use time at 400~700 DEG C) of Si-Mo rod, in thermostatic control,
Guarantee the constant of space temperature, common cooperation improves the quality of production and production efficiency.
In another embodiment, two different pid algorithms are used for the fluid temperature control of fusion zone, and can
It realizes switching control between the two, different control algolithms is selected according to the fluid temperature situation in practical operation, give system
Bring certain compatibility.And second pid control algorithm (improved algorithm) can be by the fluctuation of liquid level and the variation of charging
And variation of fluid temperature etc. takes into account that participation calculates inside proportion function (deviation), to obtain more preferably control parameter
More preferably control effect.
In another embodiment, it is detected using the on-off that intermittent disconnected stick detection control carries out Si-Mo rod, uses wheel
Hardware cost can be effectively reduced in inquiry mechanism, and can effectively detect the position of Si-Mo rod broken string, reminds maintenance personnel more
It changes, and if wherein Si-Mo rod breaks stick, will not influence other Si-Mo rod groups, so that system is more reliable and stable,
Suitable for the grouping control more than Si-Mo rod quantity, system cost can be effectively reduced.
Detailed description of the invention
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the brief configuration schematic diagram of all-electric melting kiln according to an embodiment of the present invention.
Fig. 2 shows the flow charts of the technique electric control method of all-electric melting kiln according to a first embodiment of the present invention.
Fig. 3 shows the flow chart of the technique electric control method of all-electric melting kiln according to a second embodiment of the present invention.
Fig. 4 shows step S101 in the technique electric control method of the all-electric melting kiln of Fig. 1 embodiment according to the present invention
The flow chart of specific embodiment.
Fig. 5 shows the structural schematic diagram of the technique electrical control gear of all-electric melting kiln according to an embodiment of the present invention.
Specific embodiment
The various embodiments that the present invention will be described in more detail that hereinafter reference will be made to the drawings.In various figures, identical element
It is indicated using same or similar appended drawing reference.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Fig. 1 shows the brief configuration schematic diagram of all-electric melting kiln according to an embodiment of the present invention.
As shown, kiln includes furnace body 10, it is equipped with interconnected fusion zone 20 and heat preservation zone 30 inside furnace body 10, is melted
Change and separated between area 20 and heat preservation zone 30 by partition 70, kiln further include the feed opening 40 being connected to fusion zone 20 and with heat preservation
The bushing 50 that area 30 is connected to, heat preservation zone 30 is for example connected to by blanking runner 60 with bushing 50.
The kiln of the embodiment of the present invention is all-electric melting kiln, for producing basalt fibre, in actual production, by feeding
Basalt particle is added into fusion zone 20 for mouth 40, then increases the temperature of fusion zone 20 and heat preservation zone 30, makes basalt particle
Fusing, gradually forms solution, flows to heat preservation zone 30 from fusion zone 20 by partition 70, then flow to bushing by blanking runner 60
50, wire drawer work is carried out after the outflow of bushing 50.Here process flow is only briefly introduced, is described in detail below in conjunction with Fig. 2.
Fig. 2 shows the flow chart of the technique electric control method of the all-electric melting kiln of the specific embodiment of the invention, this implementations
The electric control method of the kiln of example includes step S101-S104.
The embodiment of the present invention provides a kind of for producing the technique electrical control of the all-electric melting kiln of continuous basalt fiber
Method, to promote the performance of all-electric melting kiln various aspects, solution is melted bad in the prior art, and level control is unstable, wire drawing
Unstable problem.
In step s101, cullet are added into fusion zone, the first Si-Mo rod group is controlled using constant current mode and is promoted
Space temperature makes cullet be molten into glass metal.
It include immersion molybdenum plate and the first Si-Mo rod group in fusion zone, molybdenum plate is located at below the first Si-Mo rod group, firstly, In
It is paved with cullet in fusion zone, makes cullet that molybdenum plate be completely covered in fusion zone, and does not contact the first Si-Mo rod group, then opens
The first Si-Mo rod group in dynamic fusion zone space, gives its electrified regulation, according to heating-up furnace heating process curve to entire space temperature
Heat temperature raising is carried out, the first Si-Mo rod group in fusion zone space uses constant current mode at this time, to reduce electric current to the first silicon molybdenum
The surge of stick group, when area's space temperature to be melted is warming up to 400 degrees centigrade, cullet can be melted successively.
In the present embodiment, the connection type that the Si-Mo rod group of fusion zone is grouped using series connection, i.e., by a plurality of silicon molybdenum
Stick series arm composition.
In constant current mode, mainly control is consistent by the electric current of the first Si-Mo rod group, and electric current can be effectively prevented
It is excessive and blow Si-Mo rod, because the resistance of Si-Mo rod can change with the variation of space temperature, especially when kiln starts
The stage of heating, temperature rise quickly, surge of the electric current to Si-Mo rod can be effectively reduced using constant current controlling, reduce it
At 400~700 DEG C using the time, extend the service life of Si-Mo rod.
In step s 102, start the second Si-Mo rod group in heat preservation zone, space temperature is increased using constant current mode.
When equal cullet are completely melt as glass metal, start the second Si-Mo rod group in heat preservation zone space, gives its electrified regulation,
Space temperature in heat preservation zone is subjected to heat temperature raising according to heating-up furnace heating process curve, until heat preservation zone space temperature reaches work
Skill temperature, the first Si-Mo rod group in the space of fusion zone still uses constant current mode at this time.Heat preservation zone space temperature controls class
It is same as the control of fusion zone space temperature, so the temperature control of heat preservation zone at this time uses constant current mode.
In step s 103, basalt particle is added into fusion zone makes it be molten into basalt liquid, when Black Warrior unvenile water
It is constant temperature mode by the control mode switch of the first Si-Mo rod group and the second Si-Mo rod group when body reaches the liquid level that bushing needs.
After the space temperature of fusion zone and heat preservation zone is all promoted to certain temperature, basalt is added into fusion zone
Grain raw material, due to the high temperature in space, basalt particle starts fusing and forms basalt liquid, continuous that basalt particle is added
Raw material rises the liquid level of basalt liquid, and liquid constantly flow to heat preservation zone from fusion zone, finally reaches above bushing, directly
It is raised to the liquid level of bushing needs to liquid, switches the temp-controled mode of fusion zone and heat preservation zone at this time.By fusion zone and heat preservation
The control mode of the first Si-Mo rod group and the second Si-Mo rod group in area space is switched to constant temperature mode by constant current mode.
In stationary temperature control model, when kiln arrival needs holding stage using this mode, using space temperature as
Feedback and setting value compare, and carry out PID closed-loop control.PID controller (proportional-integral derivative controller) is one in industry
Common feedback loop component, is made of proportional unit P, integral unit I and differentiation element D in control application.The base of PID control
Plinth is ratio control, and integration control can eliminate steady-state error, but can increase overshoot, and differential control can accelerate Great inertia system and ring
It answers speed and weakens overshoot trend.And closed-loop control system (closed-loop control system) refers to controlled device
Output (controlled variable) counter can send back the input for influencing controller, form one or more closed loops.It, can be in the present embodiment
Temperature controlled variable the most is fed back into system.
In step S104, starts bushing for glass metal and displace kiln, and the temperature of fusion zone and heat preservation zone is risen to
After steady temperature, control bushing carries out wire-drawing operation at a constant temperature.
Start bushing, gives its energization, the basalt liquid above bushing is released from bushing, be constantly added to fusion zone
Basalt particle, and basalt liquid is made constantly to flow to bushing, basalt particulate material is added by continuous and previous step
The step of recycle, the glass metal in fusion zone is finally displaced into kiln, starts formal basalt wire-drawing operation, nozzle plate temperature
Using constant temperature mode.At this point, fusion zone temperature, heat preservation zone temperature are risen to technological temperature, and remain constant, feeds according to liquid level
State is fed steadily, and bushing starts formal continual continuous wire drawing operation can the company of being formed when kiln completes this step
The operation of continuous basalt fibre.
Nozzle plate temperature control uses conventional pid control algorithm, namely:
E (t) at this time is the temperature and upper one sampling at current time
The deviation of the temperature at moment, e.g. e (t)=T2-T1, T1 indicate the temperature of last moment, and T2 indicates Current Temperatures.
In the present embodiment, the first Si-Mo rod group of starting, the second Si-Mo rod group of starting, starting bushing are by the first silicon molybdenum
Stick group, the second Si-Mo rod group and bushing electrified regulation are realized.
The technique electric control method and control device of all-electric melting kiln provided in an embodiment of the present invention, by basalt
In the production process of fiber, to the control different control model (examples that section uses in different times of fusion zone space temperature
Such as constant current controlling, thermostatic control), realize the flexible switching of temperature control mode, constant current controlling mode is generally used for kiln
Temperature rise period use；Stationary temperature control model is generally used for use when kiln heat preservation or steady production.In constant current
When control model, surge of the electric current to Si-Mo rod is reduced, its service life is improved, in thermostatic control, guarantees the perseverance of space temperature
Fixed, common cooperation improves the quality of production and production efficiency.
Fig. 3 shows the flow chart of the technique electric control method of all-electric melting kiln according to a second embodiment of the present invention.Packet
Include step S201-S209.
The electric control method of all-electric melting kiln provided in an embodiment of the present invention relates generally to the control of temperature, including molten
Change the control of area's space temperature, the control of fusion zone fluid temperature, the control of heat preservation zone space temperature, nozzle plate temperature control, blowing hole temperature
The problems such as degree control, intermittent disconnected stick detection control, in the embodiment of fig. 2, it is noted that the control of fusion zone space temperature, heat preservation
The control of area's space temperature and nozzle plate temperature control, the present embodiment introduce other several rate-determining steps.
In step s 201, before starting work, start the first Si-Mo rod group, so that it is worked in constant voltage mode, this sentences
The profiling temperatures of disconnected kiln, calculate kiln running parameter.
In step S202, cullet are added into fusion zone, the first Si-Mo rod group is controlled using constant current mode and is promoted
Space temperature makes cullet be molten into glass metal.
In step S203, after cullet are molten into glass metal, start the immersion molybdenum plate in fusion zone, using first
The temperature of pid control algorithm control glass metal.
In step S204, start the second Si-Mo rod group in heat preservation zone, space temperature is increased using constant current mode.
In step S205, after the first Si-Mo rod group and the starting of the second Si-Mo rod group, using intermittent disconnected stick detection control
Method processed successively detects the voltage at primary all Si-Mo rod both ends every same time, judges the on-off of all Si-Mo rods.
In step S206, basalt particle, which is added, into fusion zone makes it be molten into basalt liquid, when Black Warrior unvenile water
It is constant temperature mode by the control mode switch of the first Si-Mo rod group and the second Si-Mo rod group when body reaches the liquid level that bushing needs.
In step S207, when basalt liquid reaches the liquid level that bushing needs, controlled using the second pid control algorithm
The temperature of basalt solution.
In step S208, starts bushing for glass metal and displace kiln, and the temperature of fusion zone and heat preservation zone is risen to
After steady temperature, control bushing carries out wire-drawing operation at a constant temperature.
In step S209, when the raw material in fusion zone forms refractory particle or kiln needs to stop working, starting
Raw material in fusion zone is released its electrified regulation by blowing hole.
Step S202, S204, S206, S208 are identical as the step S101-S104 of Fig. 2 respectively, and which is not described herein again.Below
Step S201, S203, S205, S207 and step S209 is only described in detail.
In step s 201, before starting work, start the first Si-Mo rod group, so that it is worked in constant voltage mode, this sentences
The profiling temperatures of disconnected kiln, calculate kiln running parameter.
This step belongs to the other side of fusion zone space temperature control, before constant voltage mode can be used to judge kiln
The temperature conditions in space afterwards calculates resistance according to formula R=U/I, and U indicates the end voltage of this Si-Mo rod group in formula, and I expression passes through
Then the electric current of this Si-Mo rod group can calculate electricalresistivityρ, can find corresponding temperature according to electricalresistivityρ/temperature T curve
Degree, can also inquire the temperature conditions near this Si-Mo rod group, thus according to the resistance calculations calculated between different Si-Mo rod groups
Temperature difference between different Si-Mo rod groups out so as to calculate kiln spatial temperature distribution situation, therefore uses constant voltage
The available kiln of mode is influenced on the temperature of Si-Mo rod and spatial parameter model, to calculate the running parameter of kiln, also
Temperature Distribution can be used to correct pid control algorithm, realize the accurate control of the temperature of kiln, the design for novel kiln
Critically important test data and reference value are provided.Constant voltage mode control can be generally used for experimental furnace.
In step S203, after cullet are molten into glass metal, start the immersion molybdenum plate in fusion zone, using first
The temperature of pid control algorithm control glass metal.
In conjunction with Fig. 2, after cullet are molten into glass metal, starts immersion molybdenum plate, its electrified regulation is given, by cullet
The temperature of glass metal is promoted, and carries out heating heating-up furnace to entire kiln according to heating-up furnace heating process curve, until being warming up to
1300 degrees Celsius, molybdenum plate is controlled using fusion zone liquid at this time, for example, by using conventional pid algorithm, and to the first silicon
Molybdenum bar group carries out constant current controlling.The glass metal in fusion zone will also guarantee to cover molybdenum plate at this time, and not contact the first Si-Mo rod
Group controls the control for carrying out temperature of glass liquid using fusion zone liquid.
PID control, that is, ratio (proportion), integral (integration), differential (differentiation) control
Device.PID controller is made of proportional unit (P), integral unit (I) and differentiation element (D), and three parameters need to be only set in use
(Kp, Ti and Td).In many cases, it is not absolutely required to whole three units, one to two lists therein can be taken
Member, but ratio control unit be it is essential, proportional unit is it can be appreciated that deviation signal.
It inputs e (t) and exports the relationship of u (t) are as follows:
The bound integrated in formula is 0 and t respectively, and e (t) deviation signal at this time is only related with the variation of temperature.
In step S205, after the first Si-Mo rod group and the starting of the second Si-Mo rod group, using intermittent disconnected stick detection control
Method processed successively detects the voltage at primary all Si-Mo rod both ends every same time, judge all Si-Mo rods on-off and its
Operating status.
Intermittent disconnected stick detection control detects each Si-Mo rod using intermittent polling mode, and every
Intermediate relay is first accessed at the both ends of Si-Mo rod, accesses voltmeter or voltage transmitter together after intermediate relay.Pass through
The connection of intermediate relay can measure the both end voltage of any one Si-Mo rod, this disconnected stick detection program is using wheel
Inquiry mechanism, every one Si-Mo rod of detection in 5 seconds.This is indicated when Si-Mo rod voltage is greater than normal voltage (Si-Mo rod voltage rating)
Si-Mo rod has broken, and carries out the disconnected stick position of warning note；When Si-Mo rod voltage is 0, indicate that this Si-Mo rod group has stick to break；Work as electricity
When pressure is equal to both end voltage/Si-Mo rod radical of Si-Mo rod group, indicate this Si-Mo rod group without disconnected stick phenomenon；It is described herein etc.
In be blurring concept (because voltmeter transmitter etc. can lose precision, floating number, which can not accurately calculate, to be equal to), use
It is the algorithm that difference is less than franchise value (the invention is using 1V as franchise value).
Intermittent disconnected stick detection control uses polling mechanism and hardware can be effectively reduced using the mechanism in communication
Cost, and can effectively detect the position of Si-Mo rod broken string, maintenance personnel's replacement is reminded, different from conventional series connection control
System, but Si-Mo rod group control is used, if the wherein disconnected stick of a Si-Mo rod, will not influence other Si-Mo rod groups, to make
The system of obtaining is more reliable and stable.
In step S207, when basalt liquid reaches the liquid level that bushing needs, controlled using the second pid control algorithm
The temperature of basalt solution.
This step is related to the second aspect of fusion zone fluid temperature control, the temperature of basalt liquid is controlled, in the Black Warrior
Unvenile water body switches fluid temperature control model when reaching the liquid level of bushing needs.By the control of the first Si-Mo rod group in fusion zone space
Mode processed is switched to constant temperature mode by constant current mode, and fusion zone liquid control model is cut by conventional constant current PID mode
It is changed to modified pid algorithm, i.e., the second pid control algorithm is switched to by the first pid control algorithm.
Proportion function in first pid control algorithm is only the function of fluid temperature, and the second PID control is calculated in this step
Proportion function in method is the function of liquid level, kiln size, charging frequency and resistivity.
Specifically, fusion zone fluid temperature controls, the calculating carried out using following formula:
Wherein
In formula, u (t) indicates the output quantity of current output aperture namely power regulating eqiupment.
E (t) indicates deviation signal, and varying with temperature with liquid level variation, the variation of charging frequency and resistivity has
It closes, Fig. 1 can be combined by calculating herein.
K indicates that scale factor, Ti indicate that integrating factor, Td indicate that differential divisor, ρ (T1) indicate the electricity of last sampling instant
Resistance rate is the curvilinear function relationship of temperature, and it is the curvilinear function relationship of temperature that ρ (T2), which indicates the resistivity at current time,
H1 indicates that the fusion zone liquid level of last sampling instant, H2 indicate that the heat preservation zone liquid level of last sampling instant, H3 indicate
The fusion zone liquid level at current time, H4 indicate that the heat preservation zone liquid level at current time, L1 indicate shelves wall from left side wall brick
Distance (width of fusion zone), L2 indicate barricade (width of heat preservation zone) with a distance from the wall brick of right side, W indicate kiln width
Degree, f (T1) indicate the charging frequency of last sampling instant, and f (T2) indicates the charging frequency at current time.
PID control principle is used in above-mentioned formula, and is different from conventional PID control, the deviation of conventional PID control
The deviation of common control amount, such as temperature, the present invention using the improved algorithm based on resistivity and the consistency of temperature,
The strong point for the existing PID control that can withdraw deposit, at the same again can by liquid level change, charging frequency variation and resistivity with
Temperature change takes into account algorithm to the influence of system bring, to achieve the effect that multiple input single output, especially when liquid level height
When degree changes, system can be allowed to improve output in advance, reducing system inertia bring influences.
In the present embodiment, the formula of fusion zone fluid temperature control is divided into two formula, and second formula (i.e. e's (t)
Expression formula) different implementations is used, it is to be able to switch over control with the first pid control algorithm, when system cannot
When enough being controlled well, deviation signal e (t) can be substituted for temperature deviation, i.e., the solution temperature at current time is with before
The difference of the solution temperature at one moment brings certain compatibility to system.
In one embodiment, make the proportion function in the second pid control algorithm be only liquid level, kiln size and
The function of resistivity.I.e. wherein formula is changed to the temperature controlled algorithm of fusion zone liquid levelThe factor of charging can be avoided in this way, reduce system
The variable of introducing so that the fault-tolerance of system is higher.
In step S209, when the raw material in fusion zone forms refractory particle or kiln needs to stop working, starting
Raw material in fusion zone is released its electrified regulation by blowing hole.
When the raw material in fusion zone forms refractory particle or kiln needs to stop working, this step can star, it will
Blowing hole carries out electrified regulation, and the raw material in fusion zone is released, and completes blowing step.
Temperature control in blowing hole uses conventional pid control algorithm, namely:
E (t) at this time is the temperature and upper one sampling at current time
The deviation of the temperature at moment.
Above step is basic procedure of the invention and operation, needs according to circumstances to carry out various adjustment in different phase
Deng, such as installation, replacement, troubleshooting, level detection of Si-Mo rod etc..
In the operational process of kiln, by carrying out reasonable zonal control to kiln, jointly controlling, to realize the Black Warrior
Rock raw material (stone material) enters fusion zone from feed opening, melts by kiln bottom, passes through partition, flows through from heat preservation zone, most
Reach bushing eventually, from bushing outflow at the technique of silk.Various control technology and detection hand have been used during its melting and heat preservation
Section realizes the operation of system stability and high efficiency.The heat top constant temperature of liquid is formed in fusion zone space, in fusion zone liquid control unit
Point forming stable fusion temperature is melted, and is formed the heat top constant temperature of liquid in heat preservation zone space, is realized that the constant temperature of solution is equal
Change and cool down, reaches drawing process temperature finally by the PID thermostatic control of bushing, realize wire-drawing operation.In fusion zone liquid
Rear end, use the thermostatic control of blowing hole, the material or unfused good raw material of waste material or crystallization can be subjected to displacement releasing.
In fusion zone, Si-Mo rod group and heat preservation zone Si-Mo rod group have been all made of intermittent disconnected stick detection to realize the real time fail of Si-Mo rod
Detection, finds the operating status of Si-Mo rod in time, and the personnel of maintaining easily carry out fixed point maintenance.
In one embodiment, fusion zone space temperature control uses power limitation control, by the input work in fusion zone space
Rate progress is constant, can generate interference to avoid with fusion zone fluid temperature.
In one embodiment, also by the first PID while fluid temperature control in fusion zone uses the second pid control algorithm
Control algolithm is included, and when system needs, system can be switched to the control of the first pid control algorithm, so that system
Robustness is more excellent.The electric control method of kiln provided in an embodiment of the present invention, using pure electric power as the energy, in power supply
Aspect is easy to get guarantee, while all-electric melting furnace heating efficiency compared with gas furnace is higher.And for the liquid of fusion zone
Temperature control uses two different pid algorithms, and can be realized switching control between the two, according to the liquid in practical operation
Temperature situation selects different control algolithms, and certain compatibility is brought to system.And second pid control algorithm (after improvement
Algorithm) variation etc. of the variation and fluid temperature of the fluctuation of liquid level and charging can be taken into account into proportion function (deviation)
Inside participates in calculating, to obtain more preferably control parameter and more preferably control effect.In addition, using intermittent disconnected stick detection control
System carries out the on-off detection of Si-Mo rod, uses polling mechanism, hardware cost can be effectively reduced, and can effectively detect
The position of Si-Mo rod broken string, reminds maintenance personnel's replacement, and if wherein Si-Mo rod breaks stick, will not influence other Si-Mo rods
Group so that system is more reliable and stable, suitable for the grouping control more than Si-Mo rod quantity, can be effectively reduced system at
This.
Fig. 4 shows step S101 in the technique electric control method of the all-electric melting kiln of Fig. 1 embodiment according to the present invention
The flow chart of specific embodiment, including step S1011-S1014.
In step S1011, cullet are paved in fusion zone, cullet cover all and are higher than immersion molybdenum plate,
And lower than the position of the first Si-Mo rod group in the space of fusion zone.In step S1012, start the first Si-Mo rod group, using perseverance
Current-mode heats up to the space temperature of fusion zone.
Then the first Si-Mo rod group for starting fusion zone space, gives its electrified regulation, according to heating-up furnace heating process curve pair
Entire space temperature heats up.At no more than 600 degrees Celsius of temperature of this process, prevent from aoxidizing immersion molybdenum plate, this
When fusion zone space in the first Si-Mo rod group use constant current mode, reduce surge of the electric current to Si-Mo rod.
In step S1013, cullet melt successively, and cullet are added to fusion zone again, guarantee that material position is higher than submergence
Formula molybdenum plate, until cullet are fused into glass metal.
When area's space temperature to be melted is warming up to 400 degrees centigrade, cullet can be melted successively, be needed at this time not
Disconnected observation material position situation, guarantees that cullet, that is, glass metal material position is consistently higher than immersion molybdenum plate, until cullet are completely melt
At glass metal, and molybdenum plate is completely covered.
In step S1014, starting immersion molybdenum plate promotes temperature of glass liquid, carries out heating heating-up furnace to kiln.
Start immersion molybdenum plate, gives its electrified regulation, the temperature of glass liquid of cullet is promoted, is heated up according to heating-up furnace
Process curve carries out heating heating-up furnace to entire stove, until being warming up to 1300 degrees Celsius, molybdenum plate is using fusion zone at this time
Liquid controls program, using the first pid control algorithm, and carries out constant current controlling.
Fig. 5 shows the structural representation of the technique electrical control gear of all-electric melting kiln according to a first embodiment of the present invention
Figure.
As shown in figure 5, the electrical control gear of the kiln of the present embodiment include: fusion zone space temperature control module 510,
Heat preservation zone space temperature control module 520, nozzle plate temperature control module 530, intermittent disconnected stick detection control module 540 and fusing
Area's fluid temperature control module 550.
In the present embodiment, fusion zone space temperature control module 510 is used for after cullet are added into fusion zone, is used
Constant current mode controls the first Si-Mo rod group room for promotion temperature, so that cullet is molten into glass metal, and in basalt liquid
It is constant temperature mode by the control mode switch of the first Si-Mo rod group when reaching the liquid level that bushing needs.
Heat preservation zone space temperature control module 520 is used to start the second Si-Mo rod group in heat preservation zone, using constant current mould
Formula increases space temperature, and when basalt liquid reaches the liquid level that bushing needs, by the control model of the second Si-Mo rod group
It is switched to constant temperature mode.
Nozzle plate temperature control module 530 is for starting after glass metal displaces kiln by bushing, and control bushing is at a constant temperature
Carry out wire-drawing operation.
The electrical control gear of the kiln of the present embodiment further includes intermittent disconnected stick detection control module 540, for the
After one Si-Mo rod group and the starting of the second Si-Mo rod group, control method is detected using intermittent disconnected stick, is successively examined every same time
The voltage for surveying primary all Si-Mo rod both ends, judges the on-off of all Si-Mo rods.
The electrical control gear of the kiln of the present embodiment further includes fusion zone fluid temperature control module 550, for when broken
Glass melting is the immersion molybdenum plate in starting fusion zone, using the temperature of the first pid control algorithm control glass metal after glass metal
Degree；And when basalt liquid reaches the liquid level that bushing needs, using the temperature of the second pid control algorithm control basalt solution
Degree.
Wherein, the proportion function in the first pid control algorithm is only the function of fluid temperature, in the second pid control algorithm
Proportion function be liquid level, kiln size, charging frequency and resistivity function.
In one embodiment, fusion zone space temperature control module 510 is also used to before starting work, start the first silicon
Molybdenum bar group, makes it work in constant voltage mode, judges the profiling temperatures of kiln accordingly, provides kiln running parameter.
Since the technique electrical control gear of the all-electric melting kiln of the embodiment of the present invention is for executing above-mentioned all-electric melting
The technique electric control method of kiln, in front in the description of attached drawing 1-4, being described in detail each step, therefore it is complete
Only do brief introduction in the technique electrical control gear part of electric melting furnace.
In the technique electrical control gear of all-electric melting kiln provided in an embodiment of the present invention, fusion zone space temperature controls mould
Block 510 is by controlling what section in different times used to fusion zone space temperature in the production process of basalt fibre
Different control models (such as constant current controlling, thermostatic control and constant voltage control), realizes flexibly cutting for temperature control mode
It changes, constant voltage control is generally used for experimental furnace, gropes use when the Temperature Distribution of stove；Constant current controlling mode is generally used for
The temperature rise period of kiln uses；Stationary temperature control model is generally used for kiln heat preservation or use when steady production, and three kinds
Mode cooperates jointly improves the quality of production and production efficiency.
Finally, it should be noted that as described above according to the embodiment of the present invention, there is no detailed descriptionthes for these embodiments
All details, also not limiting the invention is only the specific embodiment.Obviously, as described above, many repair can be made
Change and changes.All any modification, equivalent replacement, improvement and so within the spirit and principles of the present invention, should be included in
Within protection scope of the present invention.The present embodiment is chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, thus enable skilled artisan well using the present invention and on the basis of the present invention
Modification use.The invention is limited only by the claims and the full scope thereof and equivalents thereof.
Claims (18)
1. a kind of technique electric control method of all-electric melting kiln, the kiln includes furnace body and is located at that furnace is intracorporal to be interconnected
Fusion zone and heat preservation zone, and the feed opening and bushing that are connected to respectively with fusion zone and heat preservation zone, wherein the control method
Include:
Cullet are added into the fusion zone, the first Si-Mo rod group room for promotion temperature is controlled using constant current mode, makes institute
It states cullet and is molten into glass metal；
Start the second Si-Mo rod group in the heat preservation zone, space temperature is increased using constant current mode；
Basalt particle is added into the fusion zone makes it be molten into basalt liquid, described in basalt liquid arrival
It is constant temperature mould by the control mode switch of the first Si-Mo rod group and the second Si-Mo rod group when the liquid level that bushing needs
Formula；And
Start bushing and the glass metal is displaced into the kiln, and the temperature of the fusion zone and the heat preservation zone is risen into perseverance
After determining temperature, controls the bushing and carry out wire-drawing operation at a constant temperature.
2. control method according to claim 1, wherein further include:
When the raw material in the fusion zone forms refractory particle or kiln needs to stop working, start blowing hole, it is logical to it
The raw material in the fusion zone is released in electric heating.
3. control method according to claim 1, wherein further include:
Before starting work, start the first Si-Mo rod group, so that it is worked in constant voltage mode, judge the kiln accordingly
Profiling temperatures calculate kiln running parameter.
4. control method according to claim 1, wherein further include:
After the first Si-Mo rod group and the second Si-Mo rod group starting, control method is detected using intermittent disconnected stick, often
The voltage at primary all Si-Mo rod both ends is successively detected every same time, judges the on-off of all Si-Mo rods.
5. control method according to claim 1, wherein further include:
After the cullet are molten into glass metal, start the immersion molybdenum plate in the fusion zone, is calculated using the first PID control
Method controls the temperature of the glass metal；
When the basalt liquid reaches the liquid level that the bushing needs, the Black Warrior is controlled using the second pid control algorithm
The temperature of karst liquid.
6. control method according to claim 5, wherein before starting the second Si-Mo rod group, the cullet
When with the glass metal in the fusion zone, the molybdenum plate is covered, and does not contact the first Si-Mo rod group.
7. control method according to claim 5, wherein the proportion function in first pid control algorithm is only liquid
The function of temperature, the proportion function in second pid control algorithm be liquid level, kiln size, charging frequency and
The function of resistivity.
8. control method according to claim 7, wherein the expression formula of the proportion function of first pid control algorithm
For e (t)=T2-T1,
The expression formula of the proportion function of second pid control algorithm is
9. control method according to claim 7, wherein the proportion function in second pid control algorithm is only liquid
The function of position height, kiln size and resistivity.
10. control method according to claim 1, wherein cullet are added in the fusion zone Xiang Suoshu, using constant current mould
Formula controls the first Si-Mo rod group room for promotion temperature, and the step of making the cullet be molten into glass metal includes:
Cullet are paved in the fusion zone, the cullet cover all and be higher than immersion molybdenum plate, and lower than described
The position of the first Si-Mo rod group in the space of fusion zone；
Start the first Si-Mo rod group, is heated up using space temperature of the constant current mode to the fusion zone；
The cullet melt successively, and the cullet are added to the fusion zone again, guarantee that material position is higher than immersion molybdenum plate,
Until the cullet are fused into the glass metal；
Start the immersion molybdenum plate to promote the temperature of glass liquid, heating heating-up furnace is carried out to the kiln.
11. control method according to claim 1, wherein starting the first Si-Mo rod group, starting the second silicon molybdenum
Stick group, the starting bushing are by the first Si-Mo rod group, the second Si-Mo rod group and the bushing electrified regulation
It realizes.
12. control method according to claim 1, wherein after the first Si-Mo rod group of starting and the second Si-Mo rod group,
It heats up according to heating-up furnace heating process curve to the fusion zone and the heat preservation zone.
13. control method according to claim 1, wherein when the glass metal is displaced the kiln by starting bushing,
The basalt particle constantly is added to the fusion zone, and the basalt liquid is made constantly to flow to the bushing.
14. a kind of technique electrical control gear of all-electric melting kiln, wherein include:
Fusion zone space temperature control module is used for after cullet are added into the fusion zone, using constant current mode control
The first Si-Mo rod group room for promotion temperature is made, so that the cullet is molten into glass metal, and reach in the basalt liquid
It is constant temperature mode by the control mode switch of the first Si-Mo rod group when the liquid level that the bushing needs；
Heat preservation zone space temperature control module, for starting the second Si-Mo rod group in the heat preservation zone, using constant current mode
Space temperature is increased, and when the basalt liquid reaches the liquid level that the bushing needs, by the second Si-Mo rod group
Control mode switch be constant temperature mode；And
Nozzle plate temperature control module controls the bushing and exists for starting after the glass metal displaces the kiln by bushing
Wire-drawing operation is carried out under constant temperature.
15. control device according to claim 14, wherein further include:
Intermittent disconnected stick detects control module, for adopting after the first Si-Mo rod group and the second Si-Mo rod group starting
Control method is detected with intermittent disconnected stick, the voltage at primary all Si-Mo rod both ends is successively detected every same time, judges institute
There is the on-off of the Si-Mo rod.
16. control device according to claim 14, wherein further include:
Fusion zone fluid temperature control module, for starting in the fusion zone after cullet are molten into glass metal
Immersion molybdenum plate controls the temperature of the glass metal using the first pid control algorithm；And
When the basalt liquid reaches the liquid level that the bushing needs, the Black Warrior is controlled using the second pid control algorithm
The temperature of karst liquid.
17. control device according to claim 14, wherein the fusion zone space temperature control module is also used to: In
Before start-up operation, start the first Si-Mo rod group, it is made to work in constant voltage mode, judges the temperature point of the kiln accordingly
Cloth situation provides kiln running parameter.
18. control device according to claim 16, wherein the proportion function in first pid control algorithm is only
The function of fluid temperature, the proportion function in second pid control algorithm be liquid level, kiln size, charging frequency with
And the function of resistivity.
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| GB886233A (en) * | 1957-06-20 | 1962-01-03 | Elemelt Ltd | Improvements relating to glass melting by electric heating |
| CN102206032A (en) * | 2010-03-30 | 2011-10-05 | 湖北新华光信息材料有限公司 | Detachable optical glass successive melting furnace |
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