CN102976501A - Universal variable-frequency electromagnetic descaler and descaling method thereof - Google Patents
Universal variable-frequency electromagnetic descaler and descaling method thereof Download PDFInfo
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- CN102976501A CN102976501A CN2012104286329A CN201210428632A CN102976501A CN 102976501 A CN102976501 A CN 102976501A CN 2012104286329 A CN2012104286329 A CN 2012104286329A CN 201210428632 A CN201210428632 A CN 201210428632A CN 102976501 A CN102976501 A CN 102976501A
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Abstract
The invention discloses a universal variable-frequency electromagnetic descaler. The interior of the descaler comprises a one-chip microcomputer main control board which is respectively connected with an LED backlight control module, a lattice liquid crystal display module, a coil power amplifier trigger circuit module, a D/A converter, a coil alarm module, an activate key, a main menu button, a reset circuit module, a parameter setting module, a PC communication module, a measuring module and a key switch through leads, wherein the LED backlight control module is connected with the lattice liquid crystal display module through a lead, the coil power amplifier trigger circuit module is successively connected with a coil power amplification module and an output coil through leads, the D/A converter 7 is connected with a coil power source control module through a lead, and the parameter setting module is connected with a parameter setting button 18 through a lead. The invention further discloses the descaling process of the universal variable-frequency electromagnetic descaler. The universal variable-frequency electromagnetic descaler provided by the invention is convenient to install and use and has good descaling and antiscaling effects.
Description
Technical field
The invention belongs to scale removal and the antiscale equipment technical field of process water device, be specifically related to a kind of general variable-frequency electromagnetic descaler, the invention still further relates to the descaling method of general variable-frequency electromagnetic descaler.
Background technology
Descaler is mainly used in solving scale removal, the antiscale problem of the various watering equipments such as Industrial Boiler, water circulation system and chemical industry, oil, pipeline.At present, antiscaling, descaling is still global a great problem, and the descaling and antiscaling technology of worldwide using mainly contains two kinds, i.e. chemical cleaning and physics descalling technique.
It is comparatively widely used descaling and antiscaling method that chemistry removes, in water, to add the chemical agent (being Scale inhibitors) with scale inhibition function, but inhibitor mechanism is to utilize scale remover to suppress in the water various fouling crystal grain normal growths and upset intergranule and assemble growth by standard state, reaches the descaling and antiscaling purpose.Chemical cleaning has the cost height, has to pollute and the shortcoming such as with strong points.
And the physics descalling technique that grew up has in recent years been opened up new approach for fundamentally solving the descaling and antiscaling problem.The physics descaling method has the advantages such as cost is low, pollution-free, highly versatile.The research of at present physics scale removal mainly concentrates on the various physical fields aspects such as sound field, magnetic field, electric field.The physics descalling technique that has come into operation at present has: 1) ultrasound wave descaling technology; 2) ION-STICK treater; 3) electromagnetism scale removal.In three kinds of technology, the electromagnetism descalling technique is than the tool advantage and use more extensive.
Usually 80% water molecules is the form that is become water clusters by hydrogen bond association in the water, this water clusters is that the dissolution degree of incrustation scale is lower to calcium carbonate, make incrustation scale be easy to separate out, electric magnetic incrustant remover is to utilize the electromagnetic variable-frequency resonance technique to apply a frequency spectrum extremely wide pulse-repetition identical with its natural frequency in the water to cause that water molecules produces resonance, hydrogen bond is disconnected, water clusters becomes single polar water molecules, improved the reactivity of water and to the solubleness of incrustation scale, the following water molecules of 20 μ m can permeate, surround, loose, dissolving, get rid of water-heater, old dirt in the boiler hot exchange system, the calcium ion and the carbanion that float over simultaneously in the water collide the special aragonite calcium carbonate body of formation mutually, its surface is without electric charge, be suspended in the mobile water, no longer be adsorbed on the pipeline, take away along with flowing of water, reach the purpose of scale removal.
At present, the technical parameter of domestic electric magnetic incrustant remover, mounting means and the water quality that adapts to and its common ground of caliber parameter are: 1) mounting means is the method bar, need to cut off on-the-spot pipeline when namely installing; 2) the equipment output rating is on the low side, about maximum 500W; 3) corresponding with output rating, about maximum adaptation pipe diameter 500mm; 4) adapt to determining total hardness of water less than 1000mg/L; 5) adapt to flow rates less than 2.8m/s; 6) magnetized water is short working lipe, about about 3 hours.The disadvantage of domestic descaler is: to cut off on-the-spot pipeline during installation, new project only, this to some the enterprise of the production and operation be unallowed; In addition, domestic descaler adaptation pipe diameter and water hardness scope are little also to be very important shortcoming, this has limited the Application Areas of domestic descaler to a great extent, especially on-the-spot condition of water quality is abominable such as oil production with need large diameter pipeline such as the fuel-burning power plant, the occasion that pipe diameter is about 2.5 meters; Existing domestic descaler is only applicable to the application of medium-sized and small enterprises.
Summary of the invention
The object of the present invention is to provide a kind of general variable-frequency electromagnetic descaler, not only easy to install and use, and also the descaling and antiscaling effect is remarkable.
Another object of the present invention is to provide the descaling method of above-mentioned general variable-frequency electromagnetic descaler.
The technical solution adopted in the present invention is, general variable-frequency electromagnetic descaler, include the descaler housing, be provided with control panel on one side of descaler housing, be provided with matrix liquid-crystal display screen on the control panel, dot matrix display screen one side is disposed with the master menu button, the parameter setting button, start key and key switch, the descaler enclosure interior includes the micro-chip master control board, the micro-chip master control board is respectively by wire and LED-backlit control module, dot matrix lcd module, coil power amplifier triggering circuit module, D/A converter, the coil alarm module, start key, the master menu button, the reset circuit module, parameter setting module, the PC communication module, measurement module and key switch connect, the LED-backlit control module is connected with dot matrix lcd module by wire, coil power amplifier triggering circuit module by wire successively with the coil power amplification module, power winding connects, D/A converter is connected with the coil power energy supply control module by wire, and parameter setting module is connected with parameter setting button on the control panel by wire.
Characteristics of the present invention also are,
Coil warning mould includes coil current alarm module and coil voltage alarm module, and the coil current alarm module is connected by wire with the coil voltage alarm module and is connected with the micro-chip master control board.
The coil power amplification module includes four groups of power amplifier bridge circuits, and every group of power amplifier bridge circuit includes four IGBT pipes, and every group of power amplifier bridge circuit connects a power winding.
Measurement module includes coil current measurement module and voltage of supply measurement module, the coil current measurement module is connected by wire with the voltage of supply measurement module and is connected with the micro-chip master control board, the coil current measurement module comprises many group measurement modules, and every group of measurement module is connected with the micro-chip master control board by wire respectively.
Dot matrix lcd module adopts the OCM320240 LCD MODULE.
Chip in the PC communication module is the MAX232 chip.
Coil current metering circuit module includes at least four group coil current metering circuit modules.
Another technical scheme of the present invention is, the descaling method of general variable-frequency electromagnetic descaler is specifically implemented according to following steps:
Step 1, the general variable-frequency electromagnetic descaler of adjustment form optimum operating voltage, working current and optimum working frequency (OWF):
Before equipment is paid the user, input on-site parameters by the professional and technical personnel of manufacturer first, and equipment is adjusted, make general variable-frequency electromagnetic descaler have optimum operating voltage, recommended current and optimum working frequency (OWF);
Step 2, the optimum frequency signal is become the frequency modulation electric current after the power magnification and is loaded into power winding:
The micro-chip master control board exports optimum frequency signal PWM1 and the PWM2 that generates in the step 1 to coil power amplifier triggering circuit module and coil power amplification module, coil power amplifier triggering circuit module produces the frequency triggering signal, the frequency triggering signal acts on the coil power amplification module, all power amplifier bridge circuits receive optimum frequency signal PWM1 and PWM2 simultaneously in the coil power amplification module, these two optimum frequency signal PWM1 and PWM2 control the input terminus of the high/low level that triggers driving mechanism simultaneously, make all power amplifier bridge circuit synchronous workings, electromagnetic field does not change synchronously on the same group the power amplifier bridge circuit, the IGBT pipe is divided into two groups by diagonal lines, one group of synchronization is closed, another organizes conducting, for power winding provides power, and do not forming the alternation frequency modulation electric current that direction changes in the power winding on the same group;
Step 3, utilize alternation frequency modulation electric current that pipeline is carried out scale removal:
Power winding 6 is surrounded on the pipeline to be cleaned in advance, alternation frequency modulation electric current in step 2 power winding 6 produces HF oscillation, in fixing power winding 6 interior formation higher frequency electromagnetic field, water coolant in the pipeline to be cleaned is after absorbing high-frequency electromagnetism field energy, water molecules is constantly repeatedly polarized as dipole and is produced distortion, distortion, counter-rotating, vibration, form active very strong unit molecule or the water of the sociable body state of little meaning, strengthen the moment of dipole between the water molecules, promote water to becoming the effect of dirty material and component thereof, finally reach scale inhibition and the loosening incrustation scale that has generated that peels off.
Characteristics of the present invention are that also step 1 is specifically implemented according to following steps:
1) by the professional and technical personnel of manufacturer with on-site parameters: pipe diameter D to be cleaned
0, power winding optimum operating voltage U
m, flow velocity V, water magnetic permeability μ
0, water hardness Y, the length l of power winding, the diameter d of power winding, the resistance value R of power winding and the winding number of plies of power winding, in parameter setting module, parameter setting module is sent to the on-site parameters of all inputs in the micro-chip master control board by the parameter setting key-press input on the parameter setting panel;
2) through 1) determine the on-site parameters of general variable-frequency electromagnetic descaler after, the operating voltage of general variable-frequency electromagnetic descaler behind the voltage of supply measurement module measurement plugged, and the operating voltage that measures is delivered in the micro-chip master control board, the operating voltage of general variable-frequency electromagnetic descaler is presented on the matrix liquid-crystal display screen that dot matrix lcd module connects;
3) the micro-chip master control board is with the operating voltage and 1 of general variable-frequency electromagnetic descaler) in the optimum operating voltage U of power winding of input
mCompare, as the operating voltage of descaler power power-supply and the optimum operating voltage U of power winding
mWhen inconsistent, the coil voltage alarm module starts, and sends guard signal, after guard signal was sent, the operating voltage of general variable-frequency electromagnetic descaler was changed through D/A converter, is converted to galvanic current, regulate again the standard current signal of output 0 ~ 10mA through the power amplification module;
4) utilizing 3) standard current signal that obtains regulates the operating voltage of general variable-frequency electromagnetic descaler, makes the operating voltage of general variable-frequency electromagnetic descaler and the optimum operating voltage U of power winding
mUnanimously;
5) system mathematic model that arranges in the micro-chip master control board is according to 1) in the on-site parameters of input calculate inductance L, molecular bond energy/water hardness distribution function φ (Y), the frequency distribution function ω of single group power winding:
Wherein, μ
0Be the magnetic permeability of water, m is the number of plies of power winding, D
0Be the internal diameter of pipeline to be cleaned, l is the length of power winding, and d is the diameter of power winding;
Wherein, Y is water hardness, unit: mg/L, x
0=18 is molecular weight water, x
1=100 is calcium carbonate, calcium sulfate molecular-weight average, τ
0=3.84 * 10
-7S is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules magnetizing time constant, τ
1=6.4 * 10
-6S is calcium carbonate, calcium sulfate magnetizing time constant, E
0=0.25eV is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond Average bond energy, Δ E
0Get-0.2 ~ 0.2eV is the hydrogen bond energy variable quantity, E
1=2eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4Average apparent activation, Δ E
1Get-1.5 ~ 1.5eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4The apparent activation energy variable quantity; ρ
0=1nm is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules mean radius, ρ
1=20nm is calcium carbonate, the equal radius of calcium sulfate grain Jinping;
Wherein, U
mBe the operating voltage optimum value on the power winding, V=0.1 ~ 0.4m/s is flow velocity, and m 〉=4, N 〉=2 are minimum effective magnetizing number of times;
System mathematic model is according to inductance L and the frequency distribution function ω and 1 of the single group power winding that obtains) the middle resistance value R that inputs the power winding in the micro-chip master control board, the electric current on the regulation output coil forms recommended current:
Wherein, R＜＜ω L;
The coil current measurement module detects the electric current on the power winding in real time, and the alternating current that will supply with general variable-frequency electromagnetic descaler changes into galvanic current, when galvanic current and the optimum current of supplying with power winding inconsistent, coil current alarm module in the coil alarm module can send guard signal, the photodiode of coil alarm module can be indicated, the external rly. of coil alarm module disconnects protection with circuit simultaneously, and the display screen of dot matrix lcd module can show points out the trouble spot;
6) generate optimum frequency signal PWM1 and PWM2;
A. calculate the frequency range of FM signal:
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The minimum value of apparent activation energy variable quantity obtain lower value and the frequency change lower value ω of molecular bond energy/water hardness distribution function φ (Y)
Min
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The maximum value calculation of apparent activation energy variable quantity go out higher limit and the frequency change higher limit ω of molecular bond energy/water hardness distribution function φ (Y)
Max
According to the on-site parameters in the micro-chip master control board, system mathematic model is according to the groundwork frequency of descaler under formula (3) the calculating on-site parameters, i.e. center frequency value ω
c
B. determine the frequency range of FM signal;
According to upper frequency limit value ω
Max, lower-frequency limit value ω
MinAnd mid-frequency ω
cNamely obtain the frequency range of FM signal;
C. the micro-chip master control board is controlled output optimum frequency signal PWM1 and PWM2 according to the frequency range of FM signal.
On-site parameters both can be set or set by the PC communication module 11 of master control room by panel button 18 in the step 1.
Beneficial effect of the present invention is,
1) user is input to all water quality, production technique and pipe parameter in the instrument, has control algolithm and the FM signal of best descale effect by the Module Generation in the instrument, has strengthened versatility and the substitutability of equipment;
2) adopt the giant-screen matrix liquid-crystal display screen, the man-machine interface during as user's setup parameter and the time real monitoring;
3) increased PORT COM, can directly link to each other with the terminal of master control room by communication cable, can interrupting device monitor or the change control parameter and the time reality monitoring equipment running condition;
4) can be used for the water quality rugged environment, widened its Application Areas, be applicable to the application of medium size industrial enterprise.
Description of drawings
Fig. 1 is the structure iron of the general FM electromagnetic scale removal of the present invention control panel;
Fig. 2 is the general FM electromagnetic descaler of the present invention fundamental diagram;
Fig. 3 is the general FM electromagnetic descaler of the present invention Inside coil power amplifier trigger module schematic circuit.
Among the figure, 1. micro-chip master control board, 2.LED backlight control module, 3. dot matrix lcd module, 4. coil power amplifier trigger module, 5. coil power amplification module, 6. power winding, 7.D/A transmodulator, 8. coil power energy supply control module, 9. coil alarm module, 10. coil measurement module, 11.PC the machine communication module, 12. parameter setting modules, 13. reset circuit modules, 14. coil current measurement module, 15. the voltage of supply measurement module, 16. coil current alarm modules, 17. coil voltage alarm modules, 18. parameter setting button, 19. start key, 20. key switches, 21. master menu buttons.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
General variable-frequency electromagnetic descaler, its structure as shown in Figure 1, include the descaler housing, be provided with control panel on one side of descaler housing, be provided with matrix liquid-crystal display screen on the control panel, dot matrix display screen one side is disposed with master menu button 21, parameter setting button 18, start key 19 and key switch 20;
Descaler enclosure interior structure as shown in Figure 2, include micro-chip master control board 1, micro-chip master control board 1 is connected with LED-backlit control module 2, dot matrix lcd module 3, coil power amplifier triggering circuit module 4, D/A converter 7, coil alarm module 9, start key 19, master menu button 21, reset circuit module 13, parameter setting module 12, PC communication module 11, measurement module 10 and key switch 20 by wire respectively;
LED-backlit control module 2 is connected with dot matrix lcd module 3 by wire, coil power amplifier triggering circuit module 4 is connected with coil power amplification module 5, power winding 6 successively by wire, D/A converter 7 is connected with coil power energy supply control module 8 by wire, and parameter setting module 12 is connected with parameter setting button 18 on the control panel by wire.
Coil alarm module 9 includes coil current alarm module 16 and coil voltage alarm module 17, and coil current alarm module 16 is connected with the coil voltage alarm module and is connected with micro-chip master control board 1 by wire respectively.
Coil power amplification module 5 includes four groups of power amplifier bridge circuits, and every group of power amplifier bridge circuit includes four IGBT pipes, and every group of power amplifier bridge circuit connects a power winding 6.
Dot matrix lcd module 3 adopts the OCM320240 LCD MODULE.Chip in the PC communication module 11 is the MAX232 chip.Coil current metering circuit module 14 includes at least four group coil current metering circuit modules.
The scale removal working process of general variable-frequency electromagnetic descaler, specifically implement according to following steps:
Step 1, the general variable-frequency electromagnetic descaler of adjustment form optimum operating voltage, working current and optimum working frequency (OWF):
Before equipment is paid the user, input on-site parameters by the professional and technical personnel of manufacturer first, and equipment is adjusted, make general variable-frequency electromagnetic descaler have optimum operating voltage, recommended current and optimum working frequency (OWF);
1) by the professional and technical personnel of manufacturer with on-site parameters: pipe diameter D to be cleaned
0, power winding 6 optimum operating voltage U
m, flow velocity V, water magnetic permeability μ
0, water hardness Y, the length l of power winding 6, the diameter d of power winding, the resistance value R of power winding 6 and the winding number of plies of power winding 6, be input in the parameter setting module 12 by the parameter setting button 18 on the parameter setting panel, parameter setting module 12 is sent to the on-site parameters of all inputs in the micro-chip master control board 1;
2) through 1) determine the on-site parameters of general variable-frequency electromagnetic descaler after, the operating voltage of general variable-frequency electromagnetic descaler behind the voltage of supply measurement module 15 measurement pluggeds, and the operating voltage that measures is delivered in the micro-chip master control board 1, the operating voltage of general variable-frequency electromagnetic descaler is presented on the matrix liquid-crystal display screen that dot matrix lcd module 3 connects;
3) micro-chip master control board 1 is with the operating voltage and 1 of general variable-frequency electromagnetic descaler) in the optimum operating voltage U of power winding 6 of input
mCompare, as the operating voltage of descaler power power-supply and the optimum operating voltage U of power winding 6
mWhen inconsistent, coil voltage alarm module 17 starts, send guard signal, after guard signal is sent, the operating voltage of general variable-frequency electromagnetic descaler is changed through D/A converter 7, be converted to galvanic current, regulate through power amplification module 8 again, the standard current signal of output 0 ~ 10mA;
4) utilizing 3) standard signal that obtains regulates the operating voltage of general variable-frequency electromagnetic descaler, makes the operating voltage of general variable-frequency electromagnetic descaler and the optimum operating voltage U of power winding 6
mUnanimously;
5) according to the system mathematic model in the micro-chip master control board 1 according to 1) in the on-site parameters of input calculate inductance L, molecular bond energy/water hardness distribution function φ (Y), the frequency distribution function ω of single group power winding 6:
Wherein, μ
0Be the magnetic permeability of water, m is the number of plies of power winding 6, D
0Be the internal diameter of pipeline to be cleaned, l is the length of power winding 6, and d is the diameter of power winding 6;
Wherein, Y is water hardness, unit: mg/L, x
0=18 is molecular weight water, x
1=100 is calcium carbonate, calcium sulfate molecular-weight average, τ
0=3.84 * 10
-7S is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules magnetizing time constant, τ
1=6.4 * 10
-6S is calcium carbonate, calcium sulfate magnetizing time constant, E
0=0.25eV is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond Average bond energy, Δ E
0Get-0.2 ~ 0.2eV is the hydrogen bond energy variable quantity, E
1=2eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4Average apparent activation, Δ E
1Get-1.5 ~ 1.5eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4The apparent activation energy variable quantity; ρ
0=1nm is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules mean radius, ρ
1=20nm is calcium carbonate, the equal radius of calcium sulfate grain Jinping;
Wherein, U
mBe the operating voltage optimum value on the power winding 6, V=0.1 ~ 0.4m/s is flow velocity, and m 〉=4, N 〉=2 are minimum effective magnetizing number of times;
System mathematic model is according to inductance L and the frequency distribution function ω and 1 of the single group power winding 6 that obtains) the middle resistance value R that inputs the power winding 6 in the micro-chip master control board 1, the electric current on the regulation output coil 6 forms recommended current:
Wherein, R＜＜ω L;
After the winding number of stories m of the operating voltage of descaler power power-supply and power winding 6 was fixing, scale removal and antiscaling effect depended on the Changing Pattern of FM signal; φ (Y) is a nonlinear function, and best scale removal frequency and water hardness, group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond bond energy, the fouling molecule activation can be closely related;
Coil current measurement module 14 detects the electric current on the power winding 6 in real time, and the alternating current that will supply with general variable-frequency electromagnetic descaler changes into galvanic current, when galvanic current and the optimum current of supplying with power winding 6 inconsistent, coil current alarm module 16 in the coil alarm module 9 can send guard signal, the photodiode of coil alarm module 9 can be indicated, coil alarm module 9 external rly.s disconnect protection with circuit simultaneously, and the display screen of dot matrix lcd module 3 can show points out the trouble spot;
6) generate optimum frequency signal PWM1 and PWM2;
A. calculate the frequency range of FM signal:
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The minimum value of apparent activation energy variable quantity obtain lower value and the frequency change lower value ω of molecular bond energy/water hardness distribution function φ (Y)
MiGet Δ E
0Get-0.2eV Δ E
1Get-1.5eV;
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The maximum value calculation of apparent activation energy variable quantity go out higher limit and the frequency change higher limit ω of molecular bond energy/water hardness distribution function φ (Y)
MaGet Δ E
0Get 0.2eV, Δ E
1Get 1.5eV;
According to the on-site parameters in the micro-chip master control board 1, system mathematic model is according to the groundwork frequency of descaler under formula (3) the calculating on-site parameters, i.e. center frequency value ω
c, the longest to power winding 6 current loads at this frequency band power supply, and other frequency band loading times are shorter;
B. determine the frequency range of FM signal;
According to upper frequency limit value ω
Max, lower-frequency limit value ω
MinAnd mid-frequency ω
cNamely obtain the frequency range of FM signal;
C. micro-chip master control board 1 is controlled output optimum frequency signal PWM1 and PWM2 according to the frequency range of FM signal;
Concrete frequency range is decided according to on-site parameters, for caliber D
0The pipeline to be cleaned of=0.02m ~ 3m, water flow velocity V=0.1 ~ 4m/s, water hardness Y=50 ~ 4000mg/L, optimum operating voltage U
m=40 ~ 220V, to draw applicable frequency range be f ≈ ω 2 π=50Hz ~ 30000Hz in adjustment according to system mathematic model, the mid-frequency ω that wherein calculates according to on-site parameters
cPlay a leading role, namely the loading time is the longest.
In actual applications, according to user's needs, PC communication module 11 can carry out real-time communication with micro-chip master control board 1, can also be by PC communication module 11 with in the existing parameter input micro-chip master control board 1; Be that on-site parameters both can be set by panel button, also can set by the PC communication module 11 of master control room.
Step 2, the optimum frequency signal is become the frequency modulation electric current after the power magnification and is loaded into power winding:
Micro-chip master control board 1 exports optimum frequency signal PWM1 and the PWM2 that generates in the step 1 to coil power amplifier triggering circuit module 4 and coil power amplification module 5, coil power amplifier triggering circuit module 4 produces the frequency triggering signal, the frequency triggering signal acts on coil power amplification module 5, all power amplifier bridge circuits receive optimum frequency signal PWM1 and PWM2 simultaneously in the coil power amplification module 5, these two optimum frequency signal PWM1 and PWM2 control the input terminus of the high/low level that triggers driving mechanism simultaneously, make all power amplifier bridge circuit synchronous workings, electromagnetic field does not change synchronously on the same group the power amplifier bridge circuit, the IGBT pipe is divided into two groups by diagonal lines, one group of synchronization is closed, another organizes conducting, every group of power amplifier bridge circuit in the coil power amplification module 5 also connects a power winding 6, for coil provides power, and do not forming the alternation frequency modulation electric current that direction changes in the power winding 6 on the same group;
Step 3 utilizes alternation frequency modulation electric current that pipeline is carried out scale removal;
Power winding 6 is surrounded on the pipeline to be cleaned in advance, alternation frequency modulation electric current in step 2 power winding 6 produces HF oscillation, in fixing power winding 6 interior formation higher frequency electromagnetic field, water coolant in the pipeline to be cleaned is after absorbing high-frequency electromagnetism field energy, water molecules is constantly repeatedly polarized as dipole and is produced distortion, distortion, counter-rotating, vibration, form active very strong unit molecule or the water of the sociable body state of little meaning, thereby the moment of dipole between the enhancing water molecules, promote water to becoming the effect of dirty material and component thereof, change the physicals that has form and relevant ions of deposited material in the water coolant and the bonding state of water molecules and other ions, the time lengthening that fouling crystal deposition thing is separated out, and separate out with tiny unbodied particle, finally reach scale inhibition and the loosening incrustation scale that has generated that peels off.
During the device context commissioning test, the commissioning staff carries out equipment debugging by the hand-reset button that arranges in the reset circuit module 13; Equipment is paid after the user uses, and because this equipment generally is installed in the scene, equipment starts operation automatically by the electrify restoration circuit in the reset circuit module 13 when meeting power failure by chance and sending a telegram here.General variable-frequency electromagnetic descaler generally is installed near the pipeline field, and is unattended during normal operation.
Dot matrix lcd module 3 is the output display unit of general variable-frequency electromagnetic descaler, adopt the OCM320240 LCD MODULE, the LED-backlit source that dot matrix lcd module 3 shows is by 2 controls of LED-backlit control module, the LED-backlit control module 2 of liquid-crystal display is not worked during near equipment at nobody, has prolonged the work-ing life of dot matrix lcd module 3.Literal on the liquid crystal display of 21 pairs of control of master menu button LCD MODULE 3 carries out the function page turning.
Coil power amplifier trigger module 4 includes 8 high/low end two channels driving mechanism IR2110, wherein per two form one group, be A1B1, A2B2, A3B3, totally four groups of A4B4, coil power amplifier trigger module 4 is mainly used in receiving frequency signal PWM1 and the PWM2 from 1 output of micro-chip master control board, the frequency signal of micro-chip master control board 1 output is passed to trigger winding power amplifier module 5, namely trigger the high/low level (HO/LO) that drives to coil power amplification module 5 output, make frequency control signal become the frequency modulation electric current after the power magnification and be loaded on the power winding 6 that is connected with coil power amplification module 5.
In the laboratory, the water hardness that adopts the water quality detection instrument to measure is actual to be a comprehensive statistics value, water hardness is an overall target, there is certain distribution relation between the activation energy of this index and group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond bond energy and various fouling molecules, be that water hardness is a distribution function, it is with the hydrogen bond energy of certain limit and easily the activation energy nature frequency spectrum of fouling molecule is corresponding, to reach certain scale removal like this, antiscaling effect, the frequency of FM signal also should cover the frequency spectrum of all hydrogen bond energies and fouling molecule, thereby its span in the formula is f ≈ ω 2 π=50Hz ~ 30000Hz, but different site environment, its mid-frequency is different, and the size of mid-frequency is decided according to the actual field parameter.
The mechanism of the general frequency conversion cleaner of the present invention: electric magnetic incrustant remover is the high-frequency electromagnetic oscillation that utilizes electronic circuit to produce, between fixing the two poles of the earth, form the higher frequency electromagnetic field of some strength, water coolant in the pipeline is after absorbing high-frequency electromagnetism field energy, water molecules is constantly repeatedly polarized as dipole and is produced distortion, distortion, counter-rotating, vibration, form active very strong unit molecule or the water of the sociable body state of little meaning, thereby the moment of dipole between the enhancing water molecules, promote water to becoming the effect of dirty material and component thereof, change the physicals that has form and relevant ions of deposited material in the water coolant and the bonding state of water molecules and other ions, the time lengthening that fouling crystal deposition thing is separated out, and separate out with tiny unbodied particle, finally reach scale inhibition and the loosening incrustation scale that has generated that peels off.
Scale removal and antiscaling effect mainly be carried in coil on the FM signal of load current relevant, the Main Function of FM signal is: the variation range of (1) frequency signal should contain in all water easily fouling molecule and group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond can frequency spectrum, the bond energy value of this frequency spectrum has a very wide scope, is about 10
-4EV ~ 2eV is so the frequency range of FM signal also should be mapped with the bond energy spectral change scope of fouling molecule; (2) scale removal and antiscaling effect also be carried in water in magnetic field energy relevant, and magnetic field energy is both relevant with the change frequency of electric current relevant with size of current, and according to current formula
After voltage of supply and winding around parameter are fixing, electric current I
mLarge I controlled by frequency or voltage of supply, that is to say that scale removal and antiscaling effect depend on the Changing Pattern of FM signal fully.The Changing Pattern of frequency signal, load power etc. directly affect descale effect, obtain best scale removal mill dirt effect, then must know the funtcional relationship between frequency signal and water quality, flow velocity and the pipe parameter.This funtcional relationship is the general mathematical model (seeing formula (1) ~ formula (4)) of system.
Make the FM electromagnetic descaler reach certain or best scale removal mill dirt effect, on-site parameters must be set among the descaler, namely the FM electromagnetic descaler has certain specific aim to the user.On-site parameters is as follows: water quality parameter includes: total hardness (mmol/L), carbonate hardness (mmol/L), total alkalinity (mmol/L), pH value, Fe
3+(mg/L), water conductivity (μ s/cm) etc.; Flow velocity, pipe parameter include: pipe diameter (mm), length of pipeline (m), flow velocity (m/s), pipe material.
On-the-spot for specific scale removal, the site technique parameter in this model all is definite value, and controlled physical quantity only has frequencies omega and optimum voltage U
mThe site technique parameter will be set in the instrument in advance and go, and these parameters comprise pipe diameter D
0, the flow velocity V of water, water hardness Y, stitch length l(generally get l=0.5m), water hardness Y need to be set in the instrument and go; All the other parameters all are general constant, need not set, and the numerical values recited front provides.There have been these parameters to go out best mid-frequency by computed in software and by frequency range that molecular bond energy/water hardness distribution function φ (Y) determines according to the formula of model.
Technical specifications and the parameter of the general variable-frequency electromagnetic descaler of the present invention are as follows:
This descaler Application Areas is extensive, market outlook are wide, has significant Social benefit and economic benefit, to fundamentally solving foodstuffs industry and other descaling and antiscaling problems such as oil, chemical industry, Industrial Boiler, water pipeline and various distillation plants, for environmental protection, reduction production unit running cost and maintenance of the equipment expense, raising service life of equipment etc. has Great significance.
Claims (10)
1. general variable-frequency electromagnetic descaler, it is characterized in that, include the descaler housing, be provided with control panel on one side of descaler housing, be provided with matrix liquid-crystal display screen on the control panel, dot matrix display screen one side is disposed with master menu button (21), parameter setting button (18), start key (19) and key switch (20), include micro-chip master control board (1) in the descaler housing, described micro-chip master control board (1) is respectively by wire and LED-backlit control module (2), dot matrix lcd module (3) coil power amplifier triggering circuit modules (4), D/A converter (7), coil alarm module (9), start key (19), master menu module (21), reset circuit module (13), parameter setting module (12), PC communication module (11), measurement module (10), key switch (20) connects, described LED-backlit control module (2) is connected with described dot matrix lcd module (3) by wire, described coil power amplifier triggering circuit modules (4) by wire successively with described coil power amplification module (5), power winding (6) connects, described D/A converter (7) is connected with coil power energy supply control module (8) by wire, and described parameter setting module (12) is connected with parameter setting button (18) on the described control panel by wire.
2. general variable-frequency electromagnetic descaler according to claim 1, it is characterized in that, described coil alarm module (9) includes coil current alarm module (16) and coil voltage alarm module (17), and described coil current alarm module (16) is connected 17 with the coil voltage alarm module) be connected with micro-chip master control board (1) by wire respectively.
3. general variable-frequency electromagnetic descaler according to claim 1, it is characterized in that, described coil power amplification module (5) includes four groups of power amplifier bridge circuits, and described every group of power amplifier bridge circuit includes four IGBT pipes, and described every group of power amplifier bridge circuit connects a power winding (6).
4. general variable-frequency electromagnetic descaler according to claim 1, it is characterized in that, described measurement module (10) includes coil current measurement module (14) and voltage of supply measurement module (15), described coil current measurement module (14) be connected voltage of supply measurement module (15) and be connected with micro-chip master control board (1) by wire respectively, described coil current measurement module (14) comprises many group measurement modules, and every group of measurement module is connected with micro-chip master control board (1) by wire respectively.
5. general variable-frequency electromagnetic descaler according to claim 1 is characterized in that, described dot matrix lcd module (3) adopts the OCM320240 LCD MODULE.
6. general variable-frequency electromagnetic descaler according to claim 1 is characterized in that, the chip in the described PC communication module (11) is the MAX232 chip.
7. general variable-frequency electromagnetic descaler according to claim 1 is characterized in that, described coil current metering circuit module (14) includes at least four group coil current metering circuit modules.
8. the descaling method of general variable-frequency electromagnetic descaler is characterized in that, specifically implements according to following steps:
Step 1, the general variable-frequency electromagnetic descaler of adjustment form optimum operating voltage, working current and optimum working frequency (OWF):
Before equipment is paid the user, input on-site parameters by the professional and technical personnel of manufacturer first, and equipment is adjusted, make general variable-frequency electromagnetic descaler have optimum operating voltage, recommended current and optimum working frequency (OWF);
Step 2, the optimum frequency control signal is become the frequency modulation electric current after the power magnification and is loaded into power winding:
The micro-chip master control board exports optimum frequency signal PWM1 and the PWM2 that generates in the step (1) to coil power amplifier triggering circuit modules (4) and coil power amplification module (5), coil power amplifier triggering circuit modules (4) produce the frequency triggering signal, the frequency triggering signal acts on the coil power amplification module, all power amplifier bridge circuits receive optimum frequency signal PWM1 and PWM2 simultaneously in the coil power amplification module (5), these two optimum frequency signal PWM1 and PWM2 control the input terminus of the high/low level that triggers driving mechanism simultaneously, make all power amplifier bridge circuit synchronous workings, electromagnetic field does not change synchronously on the same group the power amplifier bridge circuit, the IGBT pipe is divided into two groups by diagonal lines, one group of synchronization is closed, another organizes conducting, for power winding (6) provides power, and do not forming the alternation frequency modulation electric current that direction changes in the power winding (6) on the same group;
Step 3, utilize formation alternation frequency modulation electric current to carry out scale removal:
Described power winding (6) is surrounded on the pipeline to be cleaned in advance, alternation frequency modulation electric current in the described power winding of step 2 (6) produces HF oscillation, in fixing power winding (6), form the higher frequency electromagnetic field, water coolant in the pipeline to be cleaned is after absorbing high-frequency electromagnetism field energy, water molecules is constantly polarized repeatedly forms the water of unit molecule or the sociable body state of little meaning, change the physicals that has form and relevant ions of deposited material in the water coolant and the bonding state of water molecules and other ions, the time lengthening that fouling crystal deposition thing is separated out, and separate out with tiny unbodied particle, make finally that incrustation scale is loosening to be peeled off.
9. the descaling method of general variable-frequency electromagnetic descaler according to claim 8 is characterized in that, described step 1 is specifically implemented according to following steps:
1) by the professional and technical personnel of manufacturer with on-site parameters: pipe diameter D to be cleaned
0, power winding (6) optimum operating voltage U
m, flow velocity V, water magnetic permeability μ
0, water hardness Y, the length l of power winding (6), the diameter d of power winding, the resistance value R of power winding (6) and the winding number of plies of power winding (6), be input in the parameter setting module (12) by the parameter setting button (18) on the parameter setting panel, described parameter setting module (12) is sent to the on-site parameters of all inputs in the described micro-chip master control board (1);
2) through 1) determine the on-site parameters of general variable-frequency electromagnetic descaler after, the operating voltage of general variable-frequency electromagnetic descaler behind described voltage of supply measurement module (15) the measurement plugged, and the operating voltage that measures is delivered in the described micro-chip master control board (1), the operating voltage of described general variable-frequency electromagnetic descaler is presented on the matrix liquid-crystal display screen that described dot matrix lcd module (3) connects;
3) described micro-chip master control board (1) is with the operating voltage and 1 of general variable-frequency electromagnetic descaler) in the optimum operating voltage U of power winding (6) of input
mCompare, as the operating voltage of descaler power power-supply and the optimum operating voltage U of power winding (6)
mWhen inconsistent, described coil voltage alarm module (17) starts, send guard signal, after guard signal is sent, the operating voltage of described general variable-frequency electromagnetic descaler is changed through D/A converter (7), be converted to galvanic current, pass through again described power amplification module (8) and regulate, the standard current signal of output 0 ~ 10mA;
4) utilizing 3) standard current signal that obtains regulates the operating voltage of general variable-frequency electromagnetic descaler, makes the operating voltage of general variable-frequency electromagnetic descaler and the optimum operating voltage U of power winding (6)
mUnanimously;
5) system mathematic model that arranges in the micro-chip master control board (1) is according to 1) in the on-site parameters of input calculate inductance L, molecular bond energy/water hardness distribution function φ (Y), the frequency distribution function ω of described single group power winding (6):
Wherein, μ
0Be the magnetic permeability of water, m is the number of plies of power winding (6), D
0Be the internal diameter of pipeline to be cleaned, l is the length of power winding (6), and d is the diameter of power winding (6);
Wherein, Y is water hardness, unit: mg/L, x
0=18 is molecular weight water, x
1=100 is calcium carbonate, calcium sulfate molecular-weight average, τ
0=3.84 * 10
-7S is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules magnetizing time constant, τ
1=6.4 * 10
-6S is calcium carbonate, calcium sulfate magnetizing time constant, E
0=0.25eV is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules hydrogen bond Average bond energy, Δ E
0Get-0.2 ~ 0.2eV is the hydrogen bond energy variable quantity, E
1=2eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4Average apparent activation, Δ E
1Get-1.5 ~ 1.5eV is calcium carbonate CaCO
3, calcium sulfate CaSO
4The apparent activation energy variable quantity; ρ
0=1nm is group's a small bundle of straw, etc. for silkworms to spin cocoons on water molecules mean radius, ρ
1=20nm is calcium carbonate, the equal radius of calcium sulfate grain Jinping;
Wherein, U
mBe the operating voltage optimum value on the power winding (6), V=0.1 ~ 0.4m/s is flow velocity, and m 〉=4, N 〉=2 are minimum effective magnetizing number of times;
Described system mathematic model is according to inductance L and the frequency distribution function ω and 1 of the single group power winding (6) that calculates) the middle resistance value R that inputs the power winding (6) in the described micro-chip master control board (1), the upper recommended current that forms of regulation output coil (6):
Wherein, R＜＜ω L;
Described coil current measurement module (14) detects the electric current on the described power winding (6) in real time, and the alternating current that will supply with general variable-frequency electromagnetic descaler changes into galvanic current, when galvanic current and the optimum current of supplying with described power winding (6) inconsistent, coil current alarm module (16) in the described coil alarm module (9) can send guard signal, the photodiode of described coil alarm module (9) can be indicated, the external rly. of described coil alarm module (9) disconnects protection with circuit simultaneously, and the display screen of described dot matrix lcd module (3) can show points out the trouble spot;
6) generate optimum frequency signal PWM1 and PWM2:
A. calculate the frequency range of FM signal:
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The minimum value of apparent activation energy variable quantity obtain lower value and the frequency change lower value ω of molecular bond energy/water hardness distribution function φ (Y)
Min
Formula in the system mathematic model (2) and formula (3) are according to hydrogen bond energy variation delta E
0With calcium carbonate CaCO
3, calcium sulfate CaSO
4The maximum value calculation of apparent activation energy variable quantity go out higher limit and the frequency change higher limit ω of molecular bond energy/water hardness distribution function φ (Y)
Max
According to the on-site parameters in the described micro-chip master control board (1), system mathematic model is according to the groundwork frequency of descaler under formula (3) the calculating on-site parameters, i.e. center frequency value ω
c
B. determine the frequency range of FM signal;
According to upper frequency limit value ω
Max, lower-frequency limit value ω
MinAnd mid-frequency ω
cNamely obtain the frequency range of FM signal;
C. described micro-chip master control board (1) is controlled output optimum frequency signal PWM1 and PWM2 according to the frequency range of FM signal.
10. the scale removal process of general variable-frequency electromagnetic descaler according to claim 9 is characterized in that, on-site parameters both can pass through PC communication module (11) setting that master control room was set or passed through to panel button (18) in the described step 1.
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