CN105189822B - Method for controlling operation of heating device - Google Patents
Method for controlling operation of heating device Download PDFInfo
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- CN105189822B CN105189822B CN201480026014.9A CN201480026014A CN105189822B CN 105189822 B CN105189822 B CN 105189822B CN 201480026014 A CN201480026014 A CN 201480026014A CN 105189822 B CN105189822 B CN 105189822B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 title abstract 3
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 238000005260 corrosion Methods 0.000 claims abstract description 15
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 abstract description 8
- 238000004210 cathodic protection Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002900 effect on cell Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000036301 sexual development Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/04—Controlling or regulating desired parameters
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/40—Arrangements for preventing corrosion
- F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/40—Arrangements for preventing corrosion
- F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
- F24H9/455—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means for water heaters
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/10—Controlling or regulating parameters
- C23F2213/11—Controlling or regulating parameters for structures subject to stray currents
Abstract
Method for controlling the operation of a heating device (10), the heating device (10) comprising a tank (12) for containing an electrolytic solution, an electrode (13) immersed in the electrolytic solution, an electrical energy generator (14) connected to the electrode (13) and to the tank (12), and a controller (16) provided with a measurer (15), the measurer (15) measuring at least one electrical quantity generated between the electrode (13) and the tank (12). The method provides for adjusting the electrical energy generator (14) to maintain a protection potential (Vp) in the electrolytic solution suitable for ensuring the protection of the tank (12) from corrosion; and comprising at least one step of: the detection measures at least one electrical quantity (Vm 1, Vm 2; Im) at a meter (15) and a controller (16) processes the at least one electrical quantity (Vm 1, Vm 2; Im) to determine the electrical dispersion present in the tank (12) during the presence of the electrical dispersion.
Description
Technical field
The present invention relates to a kind of method for controlling heater operation, and it is advantageously used in reduction and is continuing with the dress
Put the corrosion phenomenon of association.
Especially, the method according to the invention can be implemented in heater, and the heater includes rotten for container
The electric cathodic protection equipment of erosion, groove or metal parts comprising water（Such as, boiler）.
Background technology
Cathodic protection for the heater for corrosion, the equipment suitable for boiler or water heater are known.
Especially, boiler-type device becomes known for heating water, wherein, the electrode made of such as titanium（Also referred to as anode）
It is immersed in comprising in water in the boiler.The positive pole of generator of electric energy is connected to anode and negative pole is connected to boiler, against
Corrosion.
Between anode and boiler the intensity of caused electric current relative to values for normal operation it is determined that time interval in the cycle
Property ground time to time change, and during the change, measure caused potential difference between the two poles of the earth of generator.
For measured potential difference compared with a predetermined a reference value, a reference value, which corresponds to, wherein prevents corrosion
Given value；It is used to determine to be applied to the current strength between anode and boiler relative to any deviation of a reference value,
To obtain the potential difference for being substantially equal to predetermined a reference value.
Referring for example to Pourbaix figures or current potential/pH figure in known manner come potential difference known to determining（Following quilt
Referred to as protection potential）, the current potential/pH figures be the electro-chemical systems in the aqueous solution balance under possible stable condition table
Show.The model is used to predict behavior of the metal material on corrosion, and the metal material is referred to as ferroalloy in this case, but
Other metals are also applied for, although using different current potentials.
Understand the material that boiler is made, it is thus possible to it is determined that to be applied to the protection potential between anode and boiler.
Although the guard method ensures that for protection boiler from corroding, it is the system of Self-Closing enough, and not
Can detect the external factor due to heater and caused by may influence（Such as, electrostatic load, electrodispersion body or its
It）.
Prior art literature WO 2009/029297 A1, WO 2007/010335 A2 and US 6.080.973 A describe
Control the corrosion for tank and heater and/or the system of other operation exceptions.
It is an object of the invention to improve it is a kind of control heater operation method, the heater be it is efficient,
And allow to extend the working life with its heater.
Another object of the present invention is to improve a kind of method for the security for improving heater.
The applicant has designed, tested and embodied the present invention, the shortcomings that to overcome prior art and obtains this
A little and other objects and advantages.
The content of the invention
The present invention is described in the independent claim, and is characterized, while dependent claims describe
The further feature of the present invention or the deformation to main inventive concept.
According to above-mentioned purpose, the method according to the invention is applied to the operation of control heater, wherein, the heater
Including：
- include electrolytic solution（For example, water）Groove,
- electrode of electrolytic solution is immersed in,
- generator of electric energy of electrode and groove is connected to,
- the controller provided with measuring appliance, measuring appliance measurement caused at least one electricity between electrode and groove.
This method provides, and adjusts generator of electric energy, to keep protection potential in electrolytic solution, the protection potential has
First given value, first given value are adapted to ensure that with time substantial constant and protect the groove from corrosion.
According to an aspect of the present invention, the method comprising the steps of：The electrodispersion body being present in groove is detected, in this phase
Between, measuring appliance measures at least one electricity and controller handles at least one electricity, to determine the presence of electrodispersion body,
The electrodispersion body will be avoided by because being occurred the reason for the corrosion effect on cell wall.
According to the embodiment of the first form of the present invention, detecting step provides, the electrodispersion body that detection is present in groove
Direct current.According to the embodiment of this form, direct current detecting step includes：
The step of electric energy that-temporarily interruption or reduction is supplied by generator of electric energy；
The step of-measurement remnant current potential, the rest potential has second value, and it is produced between electrode and groove；
The step of second value of the measured rest potential of-comparison and the 3rd of reference potential are worth；
And wherein, if measured second value is more than the 3rd value of reference potential, controller identification normal range (NR)
Interior service condition, and wherein, if measured second value is less than the 3rd value of reference potential, controller identification comes from
The presence of the electrodispersion body of direct current in groove.
According to another form of embodiment, detecting step provides, and detects the alternating current of electrodispersion body.
According to the embodiment of the latter form, measured electricity is measured electric current.In this case, detection step
Suddenly include：
- first step, wherein, generator of electric energy between electrode and groove cycle alternation the first current potential and less than first electricity
The potential change changed between second current potential of place value, to produce protection potential in electrolytic solution；
- second step, wherein, measuring appliance takes multiple measurements to the electric current circulated between electrode and groove；
- third step, wherein, whether the value of the electric current circulated between the electrode and groove measured by controller verification is around flat
The electric current that weighs keeps variable, and in this case, controller identification wherein lacks the condition of stray electrical current；
- the four steps, wherein, if the value of the electric current circulated between measured electrode and groove balanced balanced current scope it
Outside, then controller examines the frequency of measured current variation value to correspond to the periodicity of stray electrical current, and in such case
Under, identification comes from the presence of the electrodispersion body of the alternating current in groove.
The invention further relates to a kind of electric cathodic protection equipment associated with the heater including groove, the groove includes electrolysis
Solution.The equipment include be immersed in during use in electrolytic solution electrode, be connected to electrode and connect during use
To the generator of electric energy of groove and provided with the measuring appliance for being configured to measure the caused electricity between electrode and groove.According to this hair
A bright feature, controller include processing unit, and the processing unit is configured to the electricity that reception is detected by measuring appliance
Data and electricity is handled to determine the presence of electrodispersion body.The equipment also includes associated with controller to indicate electricity
The existing indicator of dispersion.
Brief description of the drawings
Referring to the drawings, these and other features of the invention are using from the embodiment of the preferred form as non-limiting example
Description below in become apparent, wherein：
- Fig. 1 is schematically showing according to the heater using control method of the invention；
- Fig. 2 a be according to the implementation of the first form be illustrated be applied to during normal operation the current potential of heater with
The curve map of the development of time；
- Fig. 2 b are the songs that the potential difference with the time measured in heater is illustrated according to the implementation of the first form
Line chart；
- Fig. 3 a be according to the implementation of the second form be illustrated be applied to during normal operation the current potential of heater with
The curve map of the development of time；
- Fig. 3 b be according to the embodiment of the second form and the electric current detected in operating conditions in heater at any time
Between development curve map；
- Fig. 3 c are according to the embodiment of the second form and the electric current detected under another service condition in heater
With the curve map of the development of time.
In order to make it easy to understand, if it is possible, using identical reference to determine identical element in accompanying drawing.It should manage
Solution, the element and feature of a form of embodiment can be conveniently incorporated the embodiment of other forms, without further
Clarification.
Embodiment
Represented by reference 10 according to the heater of the present invention and protected including the electric negative electrode for corrosion on the whole
Protect equipment 11.
Especially, heater 10 includes the groove 12 with metal surface, the metal surface and electrolytic solution（Such as water）
Contact.
In turn, electric cathodic protection equipment 11 includes electrode 13 or anode, generator of electric energy 14 and controller 16.
Electrode 13 can include the stud that may be activated with precious materials.
The present invention a form of embodiment provide, generator of electric energy be with direct current control generator, below by
Referred to as current feedback circuit 14.
Current feedback circuit 14 is connected to controller 16 in turn, and the controller 16 controls and manages current feedback circuit 14
Operation, and the specific run condition of heater 10 may be sent out（Such as the presence of electrodispersion body）Signal.
More specifically, controller 16 is provided with measuring appliance 15, the measuring appliance 15 measures at least one electricity, is configured to detect
Such as in electric cathodic protection equipment 11（In this case, between electrode 13 and groove 12）Caused curtage value.
Measuring appliance 15 can be voltmeter, ammeter, watt meter or simple equipment with electricity more to be detected
It is at least one.
Some form of embodiment, which provides controller 16, includes processing unit 19, and the processing unit is provided to processing by surveying
The signal for data and the hair possible abnormal operating conditions caused by the presence of electrodispersion body that measuring device 15 detects.
For this purpose, controller 16 can be with indicator 17（For example, luminous indication）It is associated, each indicator mark
The service condition of heater 10.
In order to ensure enough protectors 12 from corrosion, current feedback circuit 14 in heater 10 during normal operation
Protection potential is maintained between electrode 13 and groove 12, the protection potential is indicated as protecting in fig. 2 a with time substantial constant
Protect current potential Vp.
As described above, being determined as the function for the material that groove 12 is made and scheming with reference to Pourbaix, protection potential Vp is
Known value.
Only by way of example, if the groove 12 is formed from steel, protection potential Vp assume be included in 900 mV and
Value between 1200 mV.
By adjusting the electric current that is supplied by current feedback circuit 14 and being detected with measuring appliance 15 in electric cathodic protection equipment 11
The generation of the electric current in portion, which can be iteratively generating, stays in caused protection potential Vp in electrolytic solution.
The detection of electric current identifies the instability condition of the current potential in groove 12.
If measuring appliance 15 detects that electric current is adjusted by electricity relative to the sizable deviation previously measured, controller 16
The electric current that flow-generator 14 supplies, it is taken to the steady state value corresponding to balanced balanced current.With reference to figure 2a, Fig. 2 b, Fig. 3 a, Fig. 3 b
With Fig. 3 c, describe a kind of control heater 10 and run and particularly detect possible electrodispersion body（For example, influence groove 12
And the stray electrical current of its internal corrosion can be significantly assisted in）Method.
The entity of stray electrical current can be with very little, and therefore will not produce directly interference electrical safety equipment（It is such as usual
The breaker being located in electric network）.
Although they do not damage the overall security of electric network or heater 10, stray electrical current is rotten on producing
An important factor for corrosion phenomenon.
In the case of direct current dispersion and also have in the case of alternating current dispersion, asked as appearance
Topic.
Reference picture 2a and Fig. 2 b, the embodiment of the first form describes the method according to the invention, for detecting direct current
In electrodispersion body.
In heater 10 during normal operation, controller 16 adjusts the electric current supplied by current feedback circuit 14, as above
It is described, to maintain the equilibrium condition of the protection potential Vp between electrode 13 and groove 12.
Then, follow the steps below, during the controlled change by the electric energy of current feedback circuit supply is provided, detection electricity point
Granular media.
As shown in Figure 2 a, the time shorter than the total runtime of the heater 10 according to the present invention occurs for detecting step
It is spaced T.Only by way of example, it can be assumed that time interval T lasts about one minute, and in the cyclicity of 12 hours
In the case of perform, i.e. twice a day periodically detected.
Some form of embodiment provides, and during detecting step, temporary transient interruptive current is supplied to current feedback circuit 14, and
And measurement is carried out by measuring appliance 15.
It is clear that, time interval T temporary transient interruption is not influenceed from general in heater 10 during normal operation
The protecting effect of the corrosion carried out by heater 10.
The embodiment of other forms provides, the electric current that reduction is only supplied by current feedback circuit 14, and the non-interrupted electric current.
During detection, measuring appliance 15 detects potential difference, is indicated as measured current potential Vm below.Measured current potential
Vm corresponds to the caused rest potential between electrode 13 and groove 12.
According to experimental analysis, it has been found that in the case where lacking electrodispersion body, measured current potential Vm or remaining electricity
Position is moved quickly into time substantially stable asymptotic value, such as be similar to the curve for wherein detecting measured current potential Vm1
Fig. 2 b shown in.
If there is electrodispersion body in heater 10, it should be noted that measured current potential Vm（Rather than it is moved to the time
Asymptotic current potential）Quickly grow reduction, so as to promote corrosiveness.The condition is by wherein detecting potential value Vm2 Fig. 2 b
In curve shown in.
On the basis of these observations, the method according to the invention provides measured current potential Vm values by controller 16 and base
Quasi- current potential Vr is compared.Only in an illustrative manner, reference potential Vr is included between protection potential Vp 20 % and 40 %.
If measured current potential Vm is more than reference potential Vr, controller 16 identifies the service condition in normal range (NR).
Therefore, in figure 2b, measured current potential is indicated as Vm1, and can be seen that Vm1>Vr.
If measured current potential Vm is less than reference potential Vr, harmful electrodispersion body in the identification slot 12 of controller 16
In the presence of and instruct activation indicator 17.Under this condition, in figure 2b, measured current potential is indicated as Vm2, and can be with
Find out Vm2<Vr.
The embodiment of the form of the present invention provides, since at the time of when instruction protection potential Vp controlled change
After period S, current potential is measured.Using theoretical experimental evaluation period S also relevant with the stabilization time of current potential to be moved to
Asymptotic value as described above.
The embodiment of the form of the present invention provides period S and is included between 30 seconds and 60 seconds.Before measuring,
Time S sections prevent from detecting of short duration effect, and allow the operation of temporary stabilization heater 10.
Example
- heater 10 the protection potential maintained during normal operation value：Vp=-1000 mV；
- in the case of no direct current dispersion, the electricity measured by 60 seconds after temporary transient interruptive current generator 14
Position Vm value：Vm1=-750 mV；
- in the case where direct current dispersion be present, the current potential Vm's measured by 60 seconds after temporary transient interruptive current generator 14
Value：Vm2=-290 mV.
Once it has been measured that measured current potential Vm, i.e. time interval T（Fig. 2 a）Afterwards, heater 10 just recovers
Normal operation, so as to which potential difference to be returned to protection potential Vp value.
Reference picture 3a, Fig. 3 b and Fig. 3 c, the another form of embodiment of the method according to the invention is described, for detecting
Electrodispersion body in alternating current.
In heater 10 during normal operation, the instruction current generator 14 of controller 16 with electrode 13 and groove 12 it
Between generation have it is desired development and with temporally variable potential difference.
Particularly, current feedback circuit 14 is within the very short time（That is, in about every 200 μ s）Alternately produce
One current potential V1 and the second current potential V2, compared with the first current potential V1, second current potential V2 intensity decreases.
The first current potential V1 and the second current potential V2 value are determined, electrolytic solution is polarised to corresponding to protection potential to obtain
Vp value.
Some form of embodiment provides, and the second current potential V2 is included between the first current potential V1 30 % and 70 %.
In the case where that can be, for example, about 200 μ s cycle P square wave development, the first current potential V1 and the second current potential V2
Between potential change can occur（Fig. 3 a）.
In heater 10 during normal operation and in the situation of shortage electrodispersion body caused by alternating current
Under, controller 16 is described in electrolytic solution so as to ensure by modulating the function of current of current feedback circuit 14 to be fed into
Protection potential Vp.
During the step, the measuring electric quantity of measuring appliance 15（In this case, electric current follows in electric cathodic protection equipment 11
Ring）To assess whether to have reached equilibrium condition.Indicated as the electric current measured by measuring appliance 15 in Fig. 3 b and Fig. 3 c by Im.
Equilibrium condition is represented by the coherent detection with time substantially uniform measured electric current Im（Fig. 3 b）.
When the current potential of each head of current feedback circuit 14 assumes the second current potential V2 value, measure and carried out by measuring appliance 15.
In the case where lacking stray electrical current, therefore, measured current value Im is not subject to big deviation, and keeps
It is limited to surround the value band 18 of the balanced balanced current Ie changes as represented in fig 3b.
In the case where alternating current dispersion be present, measuring appliance 15 detects the exchange being similar to or equivalent to electrodispersion body
The measured electric current Im changed with periodicity of the fluctuation of electricity fluctuation.
For this purpose, the data detected under each occasion by measuring appliance 15 be transferred to processing unit 19 with reconstruct with
Measured electric current Im with the time development.Processing unit 19 can identify the cyclicity of detected value, and this is detected
Value cyclicity in the case where spuious alternating current be present, be substantially equal to or the frequency of the multiple of the latter change, example
Such as, change with the frequency for 50 Hz or 60 Hz or its several times.
Fully aware of, in order to allow the cyclicity of correct collection stray electrical current, the frequency measured have to be larger than
The frequency of stray electrical current.
If processing unit 19 identifies the circulation sexual development of the measurement carried out as indicated on, it instructs activation to refer to
Show device 17 to send out the signal of abnormal operating conditions to user.
The some form of embodiment of the present invention can provide, and optical indicator includes multiple light sources, in such case（Fig. 1）
Under, red LED 17a, green LED 17b and yellow led 17c, each of which identify the specific run bar of heater 10
Part.
Controller 16 as described above can also provide the function for the working time for counting electric cathodic protection equipment 11.
For example, can be provided in the first electricity feeding to heater 10, indicator 17 indicates to the user that the work
Time, for example, indicating that the length of service of the flashing times corresponding to red LED 17a, instruction correspond to green LED 17b sudden strain of a muscle
The work moon number of bright number.For this purpose, it can be assumed that the controller 16 also includes the timer device for determining the working time.
In heater 10 during normal operation, without electrodispersion body is detected, then green LED 17b is protected
Hold connection.
If detecting electrodispersion body, connect yellow led 17C and remain up until asking attended operation.
Red LED 17a can be used for indicating excessive electric absorption condition by heater 10, or for indicating to heat
Short circuit condition or open circuit in device 10.
It is clear that as described above, in the case of without departing from the field of the invention and scope, control can be heated
The method of plant running makes the modification and/or addition of part.
Although it is also clear that the present invention be described with reference to some specific examples, the technology of this area
Personnel can necessarily implement the method for many other equivalents to control the operation of heater, these other equivalents
Method has the characteristics of being illustrated in such as claims and therefore both fallen within the protection domain thus limited.
Claims (3)
1. control heater（10）The method of operation, the heater（10）Groove including including its internal electrolytic solution
（12）, the electrode that is immersed in the electrolytic solution（13）, be connected to the electrode（13）With the groove（12）Electric energy occur
Device（14）And provided with measuring appliance（15）Controller（16）, the measuring appliance（15）Measurement is in the electrode（13）With the groove
（12）Between caused at least one electricity, methods described provides at least one step, wherein, adjust the generator of electric energy
（14）With in the electrode（13）With the groove（12）Between maintain have first value（Vp）Protection potential, the protection potential is
It is known and with time substantial constant, it is adapted to ensure that the protection groove（12）From corrosion, it is characterised in that it is included extremely
A few step：Detection is present in the groove（12）In electrodispersion body alternating current, wherein, the detecting step includes：
- first step, wherein, the generator of electric energy（14）In the electrode（13）With the groove（12）Between replace periodically
In the first potential value（V1）With less than first potential value（V1）The second potential value（V2）Between the potential change that changes, with
The protection potential is produced in the electrolytic solution（Vp）；
- second step, wherein, the measuring appliance（15）To in the electrode（13）With the groove（12）Between the electric current that circulates enter
Row repeatedly measurement；
- third step, wherein, the controller（16）Checking it is measured in the electrode（13）With the groove（12）Between follow
The current value of ring（Im）Whether surround has value（Ie）Balanced balanced current keep variable, and in this case, the control
Device（16）Identification wherein lacks the condition of stray electrical current；
- the four steps, wherein, if measured in the electrode（13）With the groove（12）Between the current value that circulates（Im）
With value（Ie）Balanced balanced current scope outside, then the controller（16）The value of the measured curent change of checking
Whether frequency corresponds to the periodicity of the stray electrical current, and in this case, identification comes from the groove（12）In friendship
Flow the presence of the electrodispersion body of electricity.
2. according to the method for claim 1, it is characterised in that when current potential is assumed to be second potential value（V2）When, it is right
The measured electric current（Im）Measure.
3. method according to claim 1 or 2, it is characterised in that second current potential（V2）It is included in first electricity
Position（V1）30 % and 70 % between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710936904.9A CN107686991B (en) | 2013-03-08 | 2014-03-07 | Method for controlling operation of heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITUD2013A000035 | 2013-03-08 | ||
| IT000035A ITUD20130035A1 (en) | 2013-03-08 | 2013-03-08 | METHOD FOR CHECKING THE FUNCTIONING OF A HEATING SYSTEM |
| PCT/IB2014/059534 WO2014136097A1 (en) | 2013-03-08 | 2014-03-07 | Method to control the functioning of a heating apparatus |
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| CN201710936904.9A Division CN107686991B (en) | 2013-03-08 | 2014-03-07 | Method for controlling operation of heating device |
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| CN105189822A CN105189822A (en) | 2015-12-23 |
| CN105189822B true CN105189822B (en) | 2017-11-14 |
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| CN201710936904.9A Active CN107686991B (en) | 2013-03-08 | 2014-03-07 | Method for controlling operation of heating device |
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| EP (2) | EP2964809B1 (en) |
| CN (2) | CN105189822B (en) |
| ES (2) | ES2622057T3 (en) |
| IT (1) | ITUD20130035A1 (en) |
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| DE102019000378A1 (en) * | 2019-01-19 | 2020-07-23 | Stiebel Eltron Gmbh & Co. Kg | Hot water device and method for operating a hot water device |
| EP3947778A4 (en) * | 2019-05-01 | 2023-08-02 | A.O. Smith Corporation | System and method for predicting tank failure of a water heater |
| CN111893492A (en) * | 2020-08-04 | 2020-11-06 | 西安石油大学 | Auxiliary anode parameter optimization method for cathode protection system |
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- 2014-03-07 CN CN201480026014.9A patent/CN105189822B/en active Active
- 2014-03-07 EP EP14716929.6A patent/EP2964809B1/en active Active
- 2014-03-07 CN CN201710936904.9A patent/CN107686991B/en active Active
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- 2014-03-07 ES ES16201549T patent/ES2752849T3/en active Active
- 2014-03-07 WO PCT/IB2014/059534 patent/WO2014136097A1/en active Application Filing
- 2014-03-07 PL PL16201549T patent/PL3170920T3/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2964809A1 (en) | 2016-01-13 |
| EP3170920A1 (en) | 2017-05-24 |
| CN105189822A (en) | 2015-12-23 |
| PL2964809T3 (en) | 2017-07-31 |
| CN107686991A (en) | 2018-02-13 |
| ES2752849T3 (en) | 2020-04-06 |
| PL3170920T3 (en) | 2020-03-31 |
| ES2622057T3 (en) | 2017-07-05 |
| CN107686991B (en) | 2019-07-09 |
| ITUD20130035A1 (en) | 2014-09-09 |
| EP2964809B1 (en) | 2017-01-11 |
| EP3170920B1 (en) | 2019-07-31 |
| WO2014136097A1 (en) | 2014-09-12 |
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