CN107522295B - Electromagnetic descaling and antiscaling method and descaling and antiscaling device based on hysteresis comparison method - Google Patents
Electromagnetic descaling and antiscaling method and descaling and antiscaling device based on hysteresis comparison method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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Abstract
The invention discloses an electromagnetic descaling and antiscaling method and a descaling and antiscaling device based on a hysteresis comparison method, wherein a conductivity value and a temperature value of a water body to be treated are measured through a data acquisition unit; the upper computer searches for global optimal resonance frequency by using a hysteresis comparison method according to the acquired data and sends a signal to the single chip microcomputer controller to control the high-frequency signal generator to generate electromagnetic pulse with corresponding frequency; the high-frequency signal generator generates electromagnetic pulses at the global optimal frequency to descale the water body. The invention has obvious descaling and antiscaling effects, and automatically adjusts the frequency to match the resonance frequency of the water body, so as to achieve the optimal descaling effect; the adaptability is good, the scale removal range is wider, the device is not limited to a water body in a single environment, and the application range is wider; by adopting a hysteresis comparison method, the problem that the local optimal frequency is mistakenly taken as the global optimal frequency due to the fact that the curve of the conductivity value of the water body to be treated and the electromagnetic pulse frequency is not ideal enough is solved.
Description
Technical Field
The invention relates to an electromagnetic descaling device and a treatment method, which can effectively remove and inhibit dirt, pipe wall corrosion, microorganisms and the like of a pipeline and automatically select optimal electromagnetic frequency.
Background
The method is characterized in that ① generates an alternating magnetic field to enable water bodies to generate resonance, large water molecular groups are cracked into double water molecules or single water molecules, the activation of water molecules and the solubility of water scale are improved, water molecules can penetrate, surround and remove water molecules, the action mechanism of the treatment is as follows, ① generates a resonance, the large water molecular groups are cracked into double water molecules or single water molecules, and the double water molecules or the double water molecules can be degraded to inhibit the activity of algae in water, so that a large amount of biological active oxygen radicals or the double water molecules can be generated in the water bodies, and the double water molecules or the single water molecules can be degraded into double water molecules or single water molecules to inhibit the activity of algae in water, so that a large amount of biological active oxygen radicals or the double water molecules can be degraded to inhibit the activity of water molecules and water molecules in the water, and the biological active oxygen radicals or the micro-ion radicals can be degraded to generate a large amount of biological oxygen-enriched biological oxygen radicals or single water molecules after the biological active oxygen radicals or the micro-enriched biological oxygen radicals or single water molecules react with the micro-enriched biological oxygen field to inhibit the biological active oxygen-enriched biological active oxygen-enriched water to inhibit the water metabolism of the water to inhibit the water metabolism.
At present, high-frequency and variable-frequency electromagnetic descaling equipment on the market has numerous products and similar principles, and generates resonance with water by additionally adding alternating resonance frequency, so that the descaling effect is achieved. However, most of the existing products have single electromagnetic frequency setting, which cannot ensure the same descaling effect on water bodies in different environments, and the resonance frequencies of different water bodies are different from each other, so that the alternating resonance frequency loaded on the pipeline water body needs to be consistent with the resonance frequency of the water body, and a simple, practical and quick optimal resonance frequency judgment method is not available at present.
The common methods currently used for evaluating the descaling effect and determining the optimal resonant frequency include a structure weight ratio method, a coordination titration method and a method for observing the crystal type of the scale by an electron microscope. The structure weight comparison method reflects the descaling effect by comparing the weights of the precipitated scaling substances before and after electromagnetic treatment; the coordination titration method is a method for measuring the concentration of the calcium ions left and dissolved in water to measure the quality of the descaling effect; in the method for observing the scaling crystal form by an electron microscope, the difference of the generated scaling substances on the microscopic crystal form before and after the action of an electromagnetic field is observed by the electron microscope so as to qualitatively analyze the quality of the descaling effect. The above conventional methods for evaluating the descaling effect and determining the optimal resonant frequency are performed off-line, which is time and labor consuming, and in many cases only the approximate optimal resonant frequency can be obtained.
The magnetic field changes the solubility of the water scale in the water body, so that the charged particles in the water are increased and decreased, and the change of the conductivity value of the water body is reflected in the experiment, and the change of the conductivity value can reflect the descaling effect. At the end of the 20 th century, Drela, Falewicz and Kuczkowska et al, Poland, proposed test methods for assessing scale removal and inhibition by conductivity. Later, some domestic scholars use the method to perform titration experiments on various scale inhibitors, and compared with the current chemical industry standard (bubbling method), the method is simple to operate, small in relative error and short in evaluation time, and is a scale inhibition performance evaluation method worthy of popularization. The influence of different electromagnetic frequencies on the scale inhibition effect under the action of an electromagnetic field is researched by using a conductivity method, and an optimal frequency point is searched to meet the requirement on the evaluation of the electromagnetic scale inhibition performance.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an electromagnetic descaling and antiscaling method based on a hysteresis comparison method, aiming at solving the problems that the existing electromagnetic descaling instrument cannot judge the optimal resonance frequency aiming at different water qualities and has low efficiency.
The invention also aims to provide an electromagnetic descaling and antiscaling device based on a hysteresis comparison method.
The technical scheme is as follows: an electromagnetic descaling and antiscaling method based on a hysteresis comparison method comprises the following steps:
(1) setting an upper frequency limit, a lower frequency limit, and an initial frequency fAThe singlechip controller executes an initialization program and sends an instruction to start the high-frequency signal generator and the data acquisition unit to work;
(2) the high-frequency signal generator sends out a frequency fAThe current working point is recorded as point A, the conductivity value of the water body corresponding to the point A is measured by the data acquisition unit and recorded as GA(ii) a On the upper partThe bit machine sends a signal to the singlechip controller at fAAdds an △ f to control the high frequency signal generator to generate the frequency fB＝fA+△ f, and collecting the conductivity value of water body corresponding to B point by data collector and recording as GB(ii) a At fBTwo △ f are subtracted to control the high frequency signal generator to generate the frequency fC＝fBElectromagnetic pulse of-2 △ f, when reaching point C, the data acquisition unit acquires the conductivity value of the water body corresponding to point C, and the conductivity value is recorded as GC(ii) a Data collector GA、GB、GCThe value of (A) is transmitted to an upper computer;
(3) upper computer will GA、GB、GCAnd (3) comparison: if G isA≥GCAnd GB≥GAThen f will beAAdding △ f to update the frequency of the electromagnetic pulse at point A if GA≤GCAnd GB<GAOr GA<GCAnd GB＝GAThen f will beASubtracting △ f to update the frequency of the electromagnetic pulse at point A if GA<GCAnd GB>GAWhen G is presentC>GBWhen it is, then f will beASubtracting △ f to update the frequency of the electromagnetic pulse at point A, then when G is the sameC<GBWhen it is, then f will beA△ f is added to update the frequency of the electromagnetic pulse at the point A, and the frequency perturbation is repeated until G appearsA>GCAnd GB<GAPoint a at this time is recorded as the local maximum conductivity point;
(4) repeating steps (2) to (3) if GA>GCAnd GB<GAIf so, the point A is still the maximum value point, the step size △ f is reduced, the step (5) is executed, otherwise, the frequency perturbation is carried out by continuously increasing or decreasing △ f until GA>GCAnd GB<GA；
(5) Repeating steps (2) to (4) until △ f<When 1, the cycle disturbance is stopped, and f isANamely the global optimal frequency;
(6) the upper computer sends a signal to the single chip microcomputer controller to control the high-frequency signal generator to generate electromagnetic pulse, and the high-frequency signal generator generates electromagnetic pulse at the global optimal frequency to descale the water body.
Preferably, the upper frequency limit is set to fmaxLower limit of frequency fminThe initial frequency and the change step length in the step (1) are as follows:
fA＝(fmin+fmax)/2
△f＝(3/4)*fA。
the initial frequency is set as the middle value of the upper frequency limit and the lower frequency limit, so that the optimal frequency point can be found more conveniently.
Preferably, the step of decreasing △ f in step (4) is to update △ f with 3/4 of the original △ f.
Preferably, the lower frequency limit set in the step (1) is 200Hz, and the upper frequency limit is 20 MHz. Can be set according to the actual situation.
Preferably, the conductivity of the body of water is measured while the temperature of the body of water is also measured. And eliminating the influence of temperature change on the conductivity of the water body.
Preferably, after the frequency of the electromagnetic pulse is changed each time, the data acquisition unit acquires the conductivity of the water body for multiple times, and when the conductivity of the water body tends to be stable, the stable conductivity value is used as the conductivity value of the water body after the frequency is changed. And inaccurate numerical values which are not stably measured yet in the conductivity of the water body after the frequency is suddenly changed are prevented.
An electromagnetic descaling and antiscaling device based on a hysteresis comparison method comprises a data acquisition unit, a single-chip microcomputer controller, a high-frequency signal generator and an upper computer, wherein the data acquisition unit is electrically connected with the upper computer and is used for acquiring the conductivity of a water body and transmitting the conductivity to the upper computer; the upper computer comprises a memory and a processor, wherein the memory stores computer programs, and when the programs are executed by the processor, the programs can realize automatic adjustment of the frequency of the electromagnetic pulses and control the high-frequency signal generator to generate the electromagnetic pulses with corresponding frequencies through the single-chip microcomputer controller.
Preferably, the data collector comprises a conductivity sensor, and the conductivity sensor is positioned in the center of the water body to be treated. Therefore, the conductivity value of the current water body measured by the conductivity sensor is consistent with the real conductivity value of the current water body.
Preferably, the data collector further comprises a digital temperature sensor, and the digital temperature sensor is used for measuring the temperature of the water body.
Has the advantages that: the invention provides an electromagnetic descaling and antiscaling method and a descaling and antiscaling device based on a hysteresis comparison method, so that an electromagnetic descaling instrument can adapt to water bodies in different environments, and the descaling frequency can be automatically adjusted in the water bodies in different environments to achieve the optimal descaling effect. The method can quickly find local extreme values, has high operation speed, and is simple to apply and high in efficiency. The method is very suitable for carrying out frequency sweep optimization on a nonlinear system such as an electromagnetic descaling system, so that the output frequency can effectively track the resonant frequency of the water body, and the frequency is automatically adjusted to match the resonant frequency of the water body, thereby achieving the optimal descaling effect; the adaptability is good, the scale removal range is wider, the device is not limited to a water body in a single environment, and the application range is wider; by adopting a hysteresis comparison method, the problem that the local optimal frequency is mistakenly taken as the global optimal frequency due to the fact that the curve of the conductivity value of the water body to be treated and the electromagnetic pulse frequency is not ideal enough is solved.
Drawings
FIG. 1 shows the change of conductivity of 100ml of distilled water +5mg of calcium carbonate without applying a magnetic field;
FIG. 2 shows the change of conductivity of 100ml distilled water +5mg calcium carbonate under the action of magnetic field;
FIG. 3 is a graph of conductivity of a water sample under different electromagnetic field frequencies;
FIG. 4 is a diagram of an electromagnetic descaling and antiscaling device based on a hysteresis comparison method according to the present invention;
FIG. 5 is a graph of theoretical conductivity values of a water body to be treated versus electromagnetic pulse frequency;
FIG. 6 is a plot of conductivity values versus electromagnetic pulse frequency for a body of water actually to be treated;
FIG. 7 is a lower computer main flow chart of the present invention;
FIG. 8 is a main flow chart of the host computer according to the present invention;
FIG. 9 is a schematic diagram of 9 scenarios based on hysteresis comparison;
FIG. 10 is a flow chart of the algorithm of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in FIGS. 1 and 2, the change of the conductivity of 100ml of distilled water +5mg of calcium carbonate under the action of the applied magnetic field was compared with the case of no applied magnetic field. The change of the conductivity value of 100ml of distilled water and 5mg of calcium carbonate water sample is very small within 3 hours under the condition of not applying an electromagnetic field, the change is only 1.5 mu S/cm, under the action of the electromagnetic field, the change of the conductivity value of the same water sample within 3 hours is close to 10 mu S/cm, and the conductivity value of the water body can be changed by a visible electromagnetic field.
When an alternating magnetic field is added, the alternating action of the magnetic field induces the macroscopic ordered vibration of water particles to decompose a part of water molecules, so that the molar concentration of conductive ions in the electromagnetic water is greater than that of the conductive ions in the raw water, and the conductivity of the electromagnetic water is improved.
As shown in FIG. 3, in the conductivity curve of the water sample under different electromagnetic field frequencies, the conductivity value of the water sample tends to increase with the increase of the frequency, and tends to be flat when the frequency exceeds a certain value, and the frequency of the visible magnetic field also affects the conductivity value of the water sample.
The electromagnetic descaling system is a complex nonlinear system, the influence of temperature value and conductivity on output frequency cannot be described mathematically very accurately, and a relativity conclusion can be obtained only through a series of experiments. Therefore, once the resonant frequency bandwidth of the water body is determined, the electromagnetic pulse frequency output of the water treatment device can be adjusted by adopting a hysteresis comparison method according to the change of the temperature value and the conductivity, so that great advantage can be achieved.
As shown in fig. 4, the electromagnetic descaling and antiscaling device based on the hysteresis comparison method comprises a data collector 4, a single-chip microcomputer controller 5, a high-frequency signal generator 3 and an upper computer 6, wherein the data collector 4 is electrically connected with the upper computer 6, and the data collector 4 is used for collecting the conductivity of a water body and transmitting the conductivity to the upper computer 6; the upper computer 6 comprises a memory and a processor, wherein the memory stores computer programs, and when the programs are executed by the processor, the programs can automatically adjust the frequency of the electromagnetic pulses and control the high-frequency signal generator 3 to generate the electromagnetic pulses with corresponding frequencies through the singlechip controller 5.
The data collector 4 comprises a conductivity sensor and a digital temperature sensor, the conductivity sensor is located in the center of the water body to be treated, as shown in fig. 4, the data collector 4 is installed at the center of the water tank 2, namely, the center area of the water body, so that the conductivity value of the current water body measured by the conductivity sensor is approximately consistent with the real conductivity value of the current water body. The water body in the industrial pipeline is mainly circulating water, in order to simulate the dynamic circulation of the water body in the industrial pipeline, a water pump 1 is specially installed, and the water pump 1 mainly has the function of enabling the water body to circularly run and is consistent with an industrial field. The water body temperature is measured while the conductivity of the water body is measured, the digital temperature sensor is used for measuring the water body temperature, and the measured temperature is mainly used for temperature compensation calculation of the conductivity. The conductivity of the solution is closely related to the temperature, and when the temperature changes, the ionization degree, the solubility, the ion migration speed, the solution viscosity and the like of the electrolyte change, and the conductivity also changes. The temperature increases and the conductivity increases. The measured temperature is mainly used for temperature compensated calculation of the conductivity. The temperature compensation of the conductivity meter is to overcome the influence of temperature, so that the conductivity of the solution at different temperatures is comparable, and the requirement of comparison or control indexes of various industries is met.
The high frequency signal generator 3 is a device for direct descaling and can generate electromagnetic pulse frequency of 200 Hz-20 MHz. The driving of the high-frequency signal generator 3 is realized by a power amplifier.
The single-chip microcomputer controller 5 adopts an MSP430 single-chip microcomputer, and has higher processing capacity and operation speed on the premise of ensuring ultralow power consumption. After the system is powered on, the single chip microcomputer controller 5 executes a data acquisition and control initialization program, and the single chip microcomputer controller 5 sends instructions to the data acquisition device 4, the high-frequency signal generator 3 and the power amplifier for starting. After the initialization program is executed, the single chip microcomputer controller 5 enters a main program to start to execute circularly, the data collector 4 collects current water parameters at intervals, and transmits the data to the upper computer 6 for processing. Meanwhile, the singlechip controller 5 also receives an instruction of the upper computer 6 to adjust the frequency of the high-frequency signal generator 3.
The upper computer 6 system is used for receiving the current water body parameters collected by the data collector 4 and processing the current water body parameters to judge the optimal electromagnetic pulse descaling frequency, and then the upper computer 6 sends an instruction to the single chip microcomputer controller 5 to adjust the electromagnetic pulse descaling frequency of the high-frequency signal generator 3.
Fig. 6 is a graph of conductivity value and electromagnetic pulse frequency of the water body to be treated in practical situation. Because the conductivity value and the electromagnetic pulse frequency are not strictly smooth like the ideal image like fig. 5 due to the influence of temperature, PH value and electromagnetic field intensity in practice, the phenomenon of slight concave-convex fluctuation always exists. Therefore, the general local optimization algorithm based on the hysteresis comparison method inevitably leads to the situation that the optimal descaling frequency falls into the local optimal condition rather than the global optimal condition. To avoid this, the present embodiment proposes an electromagnetic descaling and antiscaling method based on the hysteresis comparison method, as shown in fig. 7, 8 and 10, comprising the following steps:
(1) setting an upper frequency limit fmaxLower limit of frequency fminInitial frequency fAAnd a variation step length △ f, wherein the specific value can be set manually according to the actual situation, for example, f is set in the embodimentminSet to 200 Hz; f. ofmaxSet to 20 MHz; the initial frequency and the variation step length are respectively:
fA＝fmin+fmax)/2
△f＝(3/4)*fA
the single chip microcomputer controller executes an initialization program and sends an instruction to start the high-frequency signal generator and the data acquisition unit to work;
(2) the high-frequency signal generator sends out a frequency fAThe current working point is recorded as point A, the conductivity value of the water body corresponding to the point A is measured by the data acquisition unit and recorded as GA(ii) a The upper computer sends a signal to the singlechip controller at fAAdds an △ f to control the high frequency signal generator to generate the frequency fB＝fA+△ f, and collecting the conductivity value of water body corresponding to B point by data collector and recording as GB(ii) a At fATwo △ f are subtracted to control the high frequency signal generator to generate the frequency fC＝fAElectromagnetic pulse of-2 △ f, when reaching point C, the data acquisition unit acquires the conductivity value of the water body corresponding to point C, and the conductivity value is recorded as GC(ii) a Data collector GA、GB、GCThe value of (A) is transmitted to an upper computer;
(3) taking the point A as the center, taking a point C and a point B respectively on the left and right to form a hysteresis loop, tracking the maximum conductivity based on a hysteresis loop observation method, and using an upper computer to perform GA、GB、GCBy comparison, nine cases shown in fig. 9 can be obtained: if G isA≥GCAnd GB≥GAThen f will beA△ f are added to update the frequency of the electromagnetic pulse at point A (keeping the positive disturbance), see (a) (b) (c) (d) of FIG. 9, if G isA≤GCAnd GB<GAOr GA<GCAnd GB＝GAThen f will beASubtracting △ f updates the frequency of the electromagnetic pulse at point A (keeping the opposite direction disturbance), see (d) (e) (f) (G) of FIG. 9, if GA<GCAnd GB>GAIf, as in FIG. 9(i), two cases need to be subdivided, when GC>GBWhen it is, then f will beASubtracting △ f to update the frequency of the electromagnetic pulse at point A, then when G is the sameC<GBWhen it is, then f will beA△ f is added to update the frequency of the electromagnetic pulse at the point A, and the frequency perturbation is repeated until G appearsA>GCAnd GB<GAPoint a at this time as in fig. 9(h) is taken as a local maximum conductivity point; if f occursBIf the upper limit frequency is higher than the upper limit frequency, the upper limit frequency is taken as fBIf f occursCWhen the lower limit frequency is less than the lower limit frequency, the lower limit frequency is taken as fC；
(4) Repeating steps (2) to (3) if GA>GCAnd GB<GAThen point A is still the maximum point, the step size is decreased △ f, △ f is updated with 3/4 of the original △ f, i.e. the new step size is 3/4 of the original step size, step (5) is performed) Otherwise, continuing to increase or decrease △ f to make frequency disturbance until GA>GCAnd GB<GA；
(5) Repeating steps (2) to (4) until △ f<When 1, the cycle disturbance is stopped, and f isANamely the global optimal frequency;
(6) the upper computer sends a signal to the single chip microcomputer controller to control the high-frequency signal generator to generate electromagnetic pulse, and the high-frequency signal generator generates electromagnetic pulse at the global optimal frequency to descale the water body.
After the frequency of the electromagnetic pulse is changed every time, the data acquisition unit acquires the conductivity of the water body for many times, and when the conductivity of the water body tends to be stable, the stable conductivity value is used as the conductivity value of the water body after the frequency is changed, so that the inaccuracy of measured data caused by the fact that the conductivity of the water body is not stable when the frequency is suddenly changed is prevented.
In the implementation process of the method, if one G is foundA>GCAnd GA>GBWhen the system does not immediately judge that the current electromagnetic pulse frequency is the optimal frequency, the current conductivity value and the current electromagnetic pulse frequency are recorded, and the system continues to run forwards until the next G point is metA>GCAnd GA>GBAt this point, the system continues to run forward. The system will repeat the previous process until the optimal frequency of electromagnetic pulses for descaling is found. If the system runs forward for a period of time and no better or no other situation is found than the currently recorded conductivity value, the system selects the currently recorded frequency value as the optimal global descaling value.
Compared with other comparison methods (such as a climbing method), the hysteresis comparison method has the following advantages:
1) and (3) performing point-by-point detection by a hill climbing method, seeking a local optimal value, finally obtaining a global optimal value through comparison, rapidly approaching the maximum value by a hysteresis comparison method, and then gradually approaching to find the maximum value.
2) Compared with a hill climbing method for gradually sweeping from small to large, the hysteresis comparison method can quickly find the optimal descaling frequency in a global range by changing the step length, and the tracking effect is obvious.
3) In the water treatment process, the conductivity fluctuates frequently, a hill climbing method is adopted, data interference is caused, the treatment complexity is increased, microwave interference can be ignored to a great extent by adopting a hysteresis comparison method, and the hysteresis comparison method is more advantageous in terms of stability.
4) When the upper and lower limit frequencies are far apart from each other, the hysteresis comparison method can reduce the amount of data to be processed compared with the hill-climbing method in terms of the amount of data to be processed.
Claims (6)
1. An electromagnetic descaling and antiscaling method based on a hysteresis comparison method is characterized by comprising the following steps:
(1) setting an upper frequency limit, a lower frequency limit, and an initial frequency fAThe singlechip controller executes an initialization program and sends an instruction to start the high-frequency signal generator and the data acquisition unit to work;
(2) the high-frequency signal generator sends out a frequency fAThe current working point is recorded as point A, the conductivity value of the water body corresponding to the point A is measured by the data acquisition unit and recorded as GA(ii) a The upper computer sends a signal to the singlechip controller at fAAdds an △ f to control the high frequency signal generator to generate the frequency fB＝fA+△ f, and collecting the conductivity value of water body corresponding to B point by data collector and recording as GB(ii) a At fBTwo △ f are subtracted to control the high frequency signal generator to generate the frequency fC＝fBElectromagnetic pulse of-2 △ f, when reaching point C, the data acquisition unit acquires the conductivity value of the water body corresponding to point C, and the conductivity value is recorded as GC(ii) a Data collector GA、GB、GCThe value of (A) is transmitted to an upper computer;
(3) upper computer will GA、GB、GCAnd (3) comparison: if G isA≥GCAnd GB≥GAThen f will beAAdding △ f to update the frequency of the electromagnetic pulse at point A if GA≤GCAnd GB<GAOr GA<GCAnd GB＝GAThen f will beASubtracting △ f to update the frequency of the electromagnetic pulse at point A if GA<GCAnd GB>GAWhen G is presentC>GBWhen it is, then f will beASubtracting △ f to update the frequency of the electromagnetic pulse at point A, then when G is the sameC<GBWhen it is, then f will beA△ f is added to update the frequency of the electromagnetic pulse at the point A, and the frequency perturbation is repeated until G appearsA>GCAnd GB<GAPoint a at this time is recorded as the local maximum conductivity point;
(4) repeating steps (2) to (3) if GA>GCAnd GB<GAIf so, the point A is still the maximum value point, the step size △ f is reduced, the step (5) is executed, otherwise, the frequency perturbation is carried out by continuously increasing or decreasing △ f until GA>GCAnd GB<GA；
(5) Repeating steps (2) to (4) until △ f<When 1, the cycle disturbance is stopped, and f isANamely the global optimal frequency;
(6) the upper computer sends a signal to the single chip microcomputer controller to control the high-frequency signal generator to generate electromagnetic pulse, and the high-frequency signal generator generates electromagnetic pulse at the global optimal frequency to descale the water body.
2. An electromagnetic descaling and scale control method based on hysteresis comparison as claimed in claim 1, wherein the upper frequency limit is set as fmaxLower limit of frequency fminThe initial frequency and the change step length in the step (1) are as follows:
fA＝(fmin+fmax)/2
△f＝(3/4)*fA。
3. an electromagnetic descaling and antiscaling method based on hysteresis comparison according to claim 1 or 2, wherein the step size △ f reduction in step (4) is achieved by updating △ f with 3/4 of original △ f.
4. An electromagnetic descaling and antiscaling method based on the hysteresis comparison method according to claim 1 or 2, wherein the lower frequency limit set in step (1) is 200Hz and the upper frequency limit is 20 MHz.
5. An electromagnetic descaling and scale control method based on hysteresis comparison according to claim 1 or 2, wherein the temperature of the water body is measured while the electrical conductivity of the water body is measured.
6. The electromagnetic descaling and antiscaling method based on the hysteresis comparison method according to claim 1 or 2, wherein the data collector collects the conductivity of the water body for many times after changing the frequency of the electromagnetic pulse each time, and the stable conductivity value is used as the conductivity value of the water body after changing the frequency until the conductivity of the water body becomes stable.
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| CN109210983B (en) * | 2018-08-13 | 2020-01-03 | 珠海格力电器股份有限公司 | Descaling method, device, system, controller and storage medium |
| CN114477392B (en) * | 2022-01-25 | 2023-09-26 | 上海科闫系统科技有限公司 | Automatic control method for electric pulse water treatment, electronic device and storage medium |
| CN116673278B (en) * | 2023-08-03 | 2023-10-13 | 上海科闫系统科技有限公司 | Electric pulse water treatment interference signal detection and treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326374A (en) * | 2005-05-23 | 2006-12-07 | Shigeru Kagi | Liquid modifying device, conductivity control device, and oxidation-reduction potential control device |
| CN101941763A (en) * | 2010-09-15 | 2011-01-12 | 重庆大学 | Treatment control system of high-power and high-frequency electromagnetic anti-scaling water and control method thereof |
| CN201817332U (en) * | 2011-01-05 | 2011-05-04 | 重庆大学 | High-power high-frequency electromagnetic antifouling water treatment control system device |
| CN204474422U (en) * | 2015-03-08 | 2015-07-15 | 宁夏水立方环保科技有限责任公司 | Intelligent heat exchanger scale prevention device |
| CN204529474U (en) * | 2015-03-07 | 2015-08-05 | 宁夏水立方环保科技有限责任公司 | Cooling circulating water intelligent electromagnetic scale prevention device |
-
2017
- 2017-10-09 CN CN201710933991.2A patent/CN107522295B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326374A (en) * | 2005-05-23 | 2006-12-07 | Shigeru Kagi | Liquid modifying device, conductivity control device, and oxidation-reduction potential control device |
| CN101941763A (en) * | 2010-09-15 | 2011-01-12 | 重庆大学 | Treatment control system of high-power and high-frequency electromagnetic anti-scaling water and control method thereof |
| CN201817332U (en) * | 2011-01-05 | 2011-05-04 | 重庆大学 | High-power high-frequency electromagnetic antifouling water treatment control system device |
| CN204529474U (en) * | 2015-03-07 | 2015-08-05 | 宁夏水立方环保科技有限责任公司 | Cooling circulating water intelligent electromagnetic scale prevention device |
| CN204474422U (en) * | 2015-03-08 | 2015-07-15 | 宁夏水立方环保科技有限责任公司 | Intelligent heat exchanger scale prevention device |
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