CN109706457A - A kind of the electron anode protection erosion protection system and method for phase-transition heat-storage equipment - Google Patents
A kind of the electron anode protection erosion protection system and method for phase-transition heat-storage equipment Download PDFInfo
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- CN109706457A CN109706457A CN201711016066.XA CN201711016066A CN109706457A CN 109706457 A CN109706457 A CN 109706457A CN 201711016066 A CN201711016066 A CN 201711016066A CN 109706457 A CN109706457 A CN 109706457A
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- gallbladder
- power supply
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- 238000005338 heat storage Methods 0.000 title claims abstract description 53
- 230000003628 erosive effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 105
- 239000002184 metal Substances 0.000 claims abstract description 105
- 210000000232 gallbladder Anatomy 0.000 claims abstract description 55
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 47
- 239000010935 stainless steel Substances 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 28
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- 230000002633 protecting effect Effects 0.000 claims abstract description 19
- 230000009466 transformation Effects 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000003780 insertion Methods 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 33
- 238000005260 corrosion Methods 0.000 claims description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 229910052697 platinum Inorganic materials 0.000 claims description 15
- 239000012782 phase change material Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 10
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 9
- ZUDYPQRUOYEARG-UHFFFAOYSA-L barium(2+);dihydroxide;octahydrate Chemical compound O.O.O.O.O.O.O.O.[OH-].[OH-].[Ba+2] ZUDYPQRUOYEARG-UHFFFAOYSA-L 0.000 claims description 9
- 229910001120 nichrome Inorganic materials 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 8
- 239000010955 niobium Substances 0.000 claims description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 8
- 229910021484 silicon-nickel alloy Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910000906 Bronze Inorganic materials 0.000 claims description 6
- 239000010974 bronze Substances 0.000 claims description 6
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 5
- 229910001080 W alloy Inorganic materials 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 230000036571 hydration Effects 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 25
- 239000010949 copper Substances 0.000 abstract description 25
- 229910052802 copper Inorganic materials 0.000 abstract description 25
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 9
- 239000003513 alkali Substances 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 24
- 230000002269 spontaneous effect Effects 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010405 anode material Substances 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000010963 304 stainless steel Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000004210 cathodic protection Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-O oxonium Chemical compound [OH3+] XLYOFNOQVPJJNP-UHFFFAOYSA-O 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention relates to a kind of electron anode of phase-transition heat-storage equipment protection erosion protection system and methods; the phase-transition heat-storage equipment includes metal gallbladder and the heat exchange metal coil pipe that is placed in metal gallbladder; the hydrated salt class phase transformation material as heat storage medium is also contained in the metal gallbladder; the erosion protection system includes DC power supply, impressed current anode and reference electrode; wherein; the cathode of the DC power supply connects the metal gallbladder and heat exchange metal coil pipe by conducting wire; in the impressed current anode insertion hydrated salt class phase transformation material, and it is isolated with metal gallbladder and heat exchange metal coil pipe electrical isolation.Compared with prior art, the present invention realizes in high temperature strong alkali solution while protecting the thermal storage equipments metalwork such as stainless steel and copper metal, is substantially reduced its Electrochemical corrosion rate, the significant service life for extending phase-transition heat-storage equipment, increases economic efficiency.
Description
Technical field
The present invention relates to the processing of phase-transition heat-storage corrosion protection of equipment, more particularly, to a kind of electron anode of phase-transition heat-storage equipment
Protect erosion protection system and method.
Background technique
In phase-change energy storage equipment field, when equipment is when carrying out phase-change accumulation energy, use such as hydrated salt class phase transformation energy storage
Material will form high-temperature liquid state electrolyte, and then generates apparent electrochemical corrosion to Metal Packaging shell and eventually lead to material
Leakage, causes irremediable economic loss.Traditional anticorrosion means are coating, plating etc., but to construction process requirement compared with
Height, the effect is unsatisfactory for real protection.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of phase-transition heat-storage equipment
Electron anode protect erosion protection system.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of electron anode protection erosion protection system of phase-transition heat-storage equipment, phase-transition heat-storage equipment include metal gallbladder and are placed in
Heat exchange metal coil pipe in metal gallbladder is also contained with the hydrated salt class phase transformation material as heat storage medium, institute in the metal gallbladder
The erosion protection system stated includes DC power supply, impressed current anode and reference electrode, wherein the cathode of the DC power supply passes through conducting wire
The metal gallbladder and heat exchange metal coil pipe are connected, anode connects the impressed current anode, which is also inserted into hydration salt phase
Become in material, and is isolated with metal gallbladder and heat exchange metal coil pipe electrical isolation, inside the reference electrode insertion heat storage medium, and
The positive or negative pole of bulk potential test equipment is connected when measurement.
Preferably, the hydrated salt class phase transformation material is lithium hydroxide, a water sodium hydroxide or barium hydroxide octahydrate
Deng one or more of combination.It is furthermore preferred that hydrated salt class phase transformation material is barium hydroxide octahydrate, energy storage density
Height, has extended cycle life at suitable phase transition temperature.
Preferably, the metal gallbladder is made of stainless steel, the stainless steel be selected from stainless steel 201, stainless steel 304 or
One or more of combinations of Stainless steel 316；Preferably, the heat exchange metal coil pipe is bronze pan tube or copper alloy coil pipe.
It is furthermore preferred that since copper is different from stainless steel corrosion potential, the former compared with the latter Gao Yue 300mV, thus they
Protecting current density will be different.Theoretically, to make stainless steel and copper in barium hydroxide octahydrate high temperature (90 DEG C) solution
From electrochemical corrosion, the protecting current density being respectively necessary for is 51mA/m2And 38mA/m2.For stainless steel and copper by protection face
Product can refer to the protecting current density of stainless steel than different situations to realize while protect the purpose of copper.Stainless steel and copper
Bigger by protected area ratio, required output protection electric current is bigger.Such as when metal gallbladder and heat exchange metal coil pipe by protected area ratio
When for 9:10, the protecting current density of DC power supply output is 46mA/m2, at this point, the corrosion rate of stainless steel and copper can be made
It is decreased to 10-3Mm/a, the spontaneous corrosion rate than not applying electron anode protection decline an order of magnitude, and a Heating Season consumption
Electricity is only 5kWh.When metal gallbladder is 4:3 by protected area ratio with heat exchange metal coil pipe, the protection electricity of DC power supply output
Current density is 54mA/m2.In addition, the present invention can also play apparent protection to stainless steel weld joint corrosion, apply cathodic protection
The corrosion rate of stainless steel weld joint reduces 5 times or more compared with spontaneous corrosion rate.It, be and for the soda bath of 60% concentration
Protected under 100 DEG C of high temperature steel storage tank from current density needed for electrochemical corrosion be 5A/m2, it is far longer than of the present invention
Current density.
In addition, for electron anode protection technique of the invention, in phase change heat storage material exothermic crystallization or endothermic melting mistake
The conductivity of journey, corresponding phase-change material can be reduced or increased, according to relational expression: electric current ∝ voltage × conductivity, in voltage perseverance
It fixs, output electric current can be self-regulated according to the variation of material electric conductivity, to provide appropriate protection electric current by protection metal.
Preferably, the ripple factor of the DC power supply is potentiostat, galvanostat, direct current constant current less than 5%
The combination of one or more of power supply, DC constant voltage power supply, LED illumination DC power supply or power supply adaptor etc..
Preferably, the DC power supply is DC constant flowing power or DC constant voltage power supply.
Preferably, the impressed current anode be pure nickel, nichrome, nickel silicon alloy, pure tungsten, tungsten alloy, platinum, platinum plating niobium or
The combination of one or more of platinized titanium etc.；
The reference electrode be one of pure nickel, nichrome, nickel silicon alloy, platinum, platinum plating niobium or platinized titanium etc. or
Several combinations.
Preferably, the insulation that it is isolated with metal gallbladder, heat exchange metal coil pipe electrical isolation is cased with outside the impressed current anode
Casing aperture and makes impressed current anode and hydrated salt class phase transformation material on the insulating sleeve.
Preferably, the impressed current anode is cylindrical or ribbon.
Preferably, the metal gallbladder is rounded or rectangular.
A kind of electron anode protection anti-corrosion method of phase-transition heat-storage equipment, phase-transition heat-storage equipment include metal gallbladder and are placed in
Heat exchange metal coil pipe in metal gallbladder is also contained with the hydrated salt class phase transformation material as heat storage medium in the metal gallbladder,
It is characterized in that, the described method comprises the following steps:
(1) metal gallbladder is connected to the cathode of DC power supply with heat exchange metal coil pipe respectively using conducting wire, meanwhile, it will be described straight
The anode in galvanic electricity source is connect with the impressed current anode in insertion water and salt phase-change material, impressed current anode and metal gallbladder and the metal that exchanges heat
Coil pipe remains electrically isolated from isolation, then will connect the reference electrode insertion water and salt of the positive or negative pole of bulk potential test equipment
In phase-change material, electron anode protection system building is completed；
(2) DC power supply is opened, and exports the protecting current density of setting, that is, realizes and the phase-transition heat-storage equipment is prevented
Corrosion protection.
Electron anode technology application mainly protect single metal, there are two types of or two or more metal needs it is to be protected
When, there are two difficult point is main: 1, different by protection metal corrosion potential, it is difficult to obtain one while have both two or more gold
Belong to the protecting current density of protecting effect.The present invention is due to metal gallbladder and copper material that the object that is directed to is stainless steel material herein
Heat exchange coil, and pass through experimental studies have found that, being adjusted within the scope of certain protecting current density may be implemented to both
Metal is protected simultaneously, in addition, stainless steel and copper are bigger by protected area ratio, required output protection electric current is bigger.2, selected auxiliary
Anode simultaneously can will make that metal is protected to generate stable cathodic polarization.The present invention is solved by finding suitable impressed current anode
Certainly.
Compared with prior art, the present invention uses auxiliary anode material, external dc power supply, reference electrode it is cheap easily
It obtains and easy for installation, electron anode protection system cost can be significantly reduced, effectively slow down by the electrochemical corrosion of protection metal, prolong
The service life of long phase transformation thermal storage equipment.
Detailed description of the invention
Fig. 1 is the device of the invention structural schematic diagram；
In figure, 1- DC power supply, 2- conducting wire, 3- heat exchange metal coil pipe, 4- metal gallbladder, 5- heat storage medium, 6- insulating sleeve,
7- impressed current anode.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of electron anode protection erosion protection system of phase-transition heat-storage equipment, shown in Figure 1, phase-transition heat-storage equipment includes
Metal gallbladder 4 and the heat exchange metal coil pipe 3 being placed in metal gallbladder 4 are also contained with the water as heat storage medium 5 in the metal gallbladder 4
Salt phase-change material is closed, the erosion protection system includes DC power supply 1, impressed current anode 7 and reference electrode, wherein described straight
The cathode in galvanic electricity source 1 connects the metal gallbladder 4 and heat exchange metal coil pipe 3 by conducting wire 2, and the impressed current anode 7 is inserted into hydrated salt
In class phase transformation material, and it is isolated with metal gallbladder 4 and the heat exchange electrical isolation of metal coil pipe 3, in the reference electrode insertion heat storage medium
Portion, when measurement, are connected with bulk potential test equipment positive or negative pole.
As a preferred embodiment of the present invention, the hydrated salt class phase transformation material is lithium hydroxide, a water
The combination of one or more of sodium hydroxide or barium hydroxide octahydrate etc..It is furthermore preferred that hydrated salt class phase transformation material is eight
Hydronium(ion) barium monoxide.
As a preferred embodiment of the present invention, the metal gallbladder 4 is made of stainless steel, the stainless steel
One or more of combinations selected from stainless steel 201, stainless steel 304 or Stainless steel 316 etc.；Preferably, the heat exchange metal
Coil pipe 3 is bronze pan tube or copper alloy coil pipe etc..
It is furthermore preferred that since copper is different from stainless steel corrosion potential, the former compared with the latter Gao Yue 300mV, thus they
Protecting current density will be different.Theoretically, to make stainless steel and copper in barium hydroxide octahydrate high temperature (90 DEG C) solution
From electrochemical corrosion, the protecting current density being respectively necessary for is 51mA/m2And 38mA/m2.For stainless steel and copper by protection face
Product can refer to the protecting current density of stainless steel than different situations to realize while protect the purpose of copper.Such as when metal gallbladder 4
With heat exchange metal coil pipe 3 by protected area ratio be 9:10 when, DC power supply 1 export protecting current density be 46mA/m2, this
When, the corrosion rate of stainless steel and copper can be made to be decreased to 10-3Mm/a, than the spontaneous corrosion rate for not applying electron anode protection
Decline an order of magnitude, and a Heating Season power consumption is only 5kWh.When metal gallbladder 4 and heat exchange metal coil pipe 3 by protection face
When product is than being 4:3, the protecting current density that DC power supply 1 exports is 54mA/m2.In addition, the present invention corrodes stainless steel weld joint
Also apparent protection can be played, apply the corrosion rate of the stainless steel weld joint of cathodic protection compared with spontaneous corrosion rate reduce 5 times with
On.And for the soda bath of 60% concentration, to protect steel storage tank from electricity needed for electrochemical corrosion under 100 DEG C of high temperature
Current density is 5A/m2, it is far longer than current density of the present invention.
In addition, for electron anode protection technique of the invention, in phase change heat storage material exothermic crystallization or endothermic melting mistake
The conductivity of journey, corresponding phase-change material can be reduced or increased, according to relational expression: electric current ∝ voltage × conductivity, in voltage perseverance
It fixs, output electric current can be self-regulated according to the variation of material electric conductivity, to provide appropriate protection electric current by protection metal.
As a preferred embodiment of the present invention, the ripple factor of the DC power supply 1 is less than 5%
Potentiostat, galvanostat, DC constant flowing power, DC constant voltage power supply, LED illumination DC power supply 1 or power supply adaptor etc.
One or more of combination.
As a preferred embodiment of the present invention, the DC power supply 1 is that DC constant flowing power or direct current are permanent
Voltage source.
As a preferred embodiment of the present invention, the impressed current anode 7 is pure nickel, nichrome, nisiloy conjunction
The combination of one or more of gold, pure tungsten, tungsten alloy, platinum, platinum plating niobium or platinized titanium etc.；
The reference electrode be one of pure nickel, nichrome, nickel silicon alloy, platinum, platinum plating niobium or platinized titanium etc. or
Several combinations.
As a preferred embodiment of the present invention, being cased with outside the impressed current anode 7 makes it with metal gallbladder 4, changes
The insulating sleeve 6 of the electrical isolation isolation of thermometal coil pipe 3 aperture and makes impressed current anode 7 and hydrated salt class phase transformation on the insulating sleeve 6
Material.
As a preferred embodiment of the present invention, the impressed current anode 7 is cylindrical or ribbon.
As a preferred embodiment of the present invention, the metal gallbladder 4 is rounded or rectangular.
Embodiment 1
A kind of electron anode protection erosion protection system of phase-transition heat-storage equipment, stores up phase transformation using electron anode system is caught on
Hot equipment carries out anti-corrosion protection, and electron anode system includes phase-transition heat-storage equipment, DC power supply 1, impressed current anode 7, reference electricity
Pole.Specifically, the metal gallbladder 4 of phase-transition heat-storage equipment is rectangular 304 stainless steel, built-in heat exchange bronze pan tube, protected stainless steel
Surface area ratio with copper is 9:10, always by protected area 10.4m2.The preferred barium hydroxide octahydrate phase-change material of heat storage medium 5.
DC power supply 1 requires ripple factor less than 5%, preferably LED DC power supply 1, inputs 220V/50Hz, exports 3.5V/1.0A.
The tungsten alloy filament of the preferred Φ 2.0 of impressed current anode 7.Preferred 0.2 platinum wire of Φ of reference electrode, with multimeter test by protection metal electricity
Position.
It as shown in Fig. 1, need to be by the metal gallbladder 4 and copper of stainless steel material to make stainless steel and copper from electrochemical corrosion
The heat exchange metal coil pipe 3 of material conducting wire 2 is connected with the cathode of DC power supply 1, the positive phase of impressed current anode 7 and DC power supply 1
Even, length is suitable with the vertical height of phase-change material.In addition, impressed current anode 7 and must be carried out between protection metal it is electric absolutely
Edge isolation.For the high density polyethylene (HDPE) casing of the preferred diameter of phi 20 of electrical isolation measure as insulating sleeve 6, insulating sleeve 6 needs aperture
(Φ 4) between electrolyte and impressed current anode 7 preferably to circulate.Electrical connection finishes, and powers on test Protection parameters.Using protection
Current density is 92mA/m2In the case where, the corrosion rate of stainless steel and copper can be made to be decreased to 10-3Mm/a, than not applying electricity
The spontaneous corrosion rate of sub- anodic protection declines an order of magnitude, and subtracts to stainless steel weld joint corrosion rate compared with spontaneous corrosion rate
Small 5 times or more.7 consumption rate of impressed current anode is 1.5kg/A a, with the sacrificial anode materials phase such as common high-silicon cast iron, carbon filler
When.
Embodiment 2
A kind of electron anode protection erosion protection system of phase-transition heat-storage equipment, sets phase-change thermal storage using electron anode system
Standby to carry out anti-corrosion protection, electron anode system includes phase-transition heat-storage equipment, DC power supply 1, impressed current anode 7, reference electrode.Tool
Body, phase-transition heat-storage equipment metal gallbladder 4 is rectangular 304 stainless steel, and built-in heat exchange bronze pan tube is protected from the surface of rust steel and copper
Product is than being 9:10, always by protected area 10.4m2.The preferred barium hydroxide octahydrate phase-change material of heat storage medium 5.DC power supply 1 is wanted
Ask ripple factor less than 5%, preferably LED DC power supply 1 inputs 220V/50Hz, exports 3.5V/0.5A.Impressed current anode 7 is excellent
Select the nickel silicon alloy silk of Φ 1.2.Preferred 0.2 platinum wire of Φ of reference electrode is tested with multimeter by protection metal current potential.
It as shown in Fig. 1, need to be by stainless steel material metal gallbladder 4 and copper material to make stainless steel and copper from electrochemical corrosion
The heat exchange metal coil pipe 3 of matter conducting wire 2 is connected with the cathode of DC power supply 1, and impressed current anode 7 is connected with the anode of DC power supply 1,
Its length is suitable with the vertical height of phase-change material.Impressed current anode 7 with electrical isolation must be carried out by protection metal be isolated.Electrical isolation
Preferably using the high density polyethylene (HDPE) casing of diameter of phi 20 as insulating sleeve, insulating sleeve needs aperture (Φ 4) so as to electricity for isolation
It preferably circulates between solution liquid and impressed current anode 7.Electrical connection finishes, and powers on test Protection parameters.Use protecting current density for
46mA/m2In the case where, the corrosion rate of stainless steel and copper can be made to be decreased to 10-3Mm/a, than not applying electron anode protection
Spontaneous corrosion rate decline an order of magnitude, and 5 times or more are reduced compared with spontaneous corrosion rate to stainless steel weld joint corrosion rate.
Using technical solution of the present invention, one Heating Season power consumption of a phase-transition heat-storage equipment is only 5kWh, it is seen that cost is relatively low.Auxiliary
7 consumption rate of anode is 10.3g/A a, suitable with common metal sacrificial anode material.
Embodiment 3
A kind of electron anode protection erosion protection system of phase-transition heat-storage equipment, sets phase-change thermal storage using electron anode system
Standby to carry out anti-corrosion protection, electron anode system includes phase-transition heat-storage equipment, DC power supply 1, impressed current anode 7, reference electrode.Tool
Body, phase-transition heat-storage equipment metal gallbladder 4 is rectangular 304 stainless steel, and built-in heat exchange bronze pan tube is protected from the surface of rust steel and copper
Product is than being 3:4, always by protected area 28m2.The preferred barium hydroxide octahydrate phase-change material of heat storage medium 5.The requirement of DC power supply 1
Ripple factor is less than 5%, optimization power supply adapter, inputs 220V/50Hz, exports 5V/1.5A.The preferred Φ's 2.0 of impressed current anode 7
Nichrome wire.Preferred 0.2 platinum wire of Φ of reference electrode is tested with multimeter by protection metal current potential.
In implementation process, stainless steel and copper are connected with conducting wire 2 with the cathode of DC power supply 1, impressed current anode 7 and direct current
The anode in source 1 is connected, and length is suitable with the vertical height of phase-change material.Impressed current anode 7 is electrically insulated with by protection metal
Isolation.For electrical isolation preferably using the teflon sleeve of diameter of phi 20 as insulating sleeve 6, insulating sleeve 6 needs aperture (Φ 4)
Preferably to circulate between electrolyte and impressed current anode 7.Electrical connection finishes, and powers on test Protection parameters.Using protective current
Density is 54mA/m2In the case where, the corrosion rate of stainless steel and copper can be made to be decreased to 10-3Mm/a, the corrosion of stainless steel weld joint
Rate reduces 5 times or more.7 consumption rate of impressed current anode is 9.0g/A a, suitable with common metal sacrificial anode material.
Embodiment 4
Compared with Example 1, other than the material of metal gallbladder 4 is using stainless steel 201, remaining is.
Embodiment 5
Compared with Example 1, other than the material of metal gallbladder 4 is using Stainless steel 316, remaining is.
Embodiment 6
Compared with Example 1, other than DC power supply 1 is using potentiostat, remaining is.
Embodiment 7
Compared with Example 1, other than DC power supply 1 is using galvanostat, remaining is.
Embodiment 8
Compared with Example 1, other than DC power supply 1 is using DC constant flowing power, remaining is.
Embodiment 9
Compared with Example 1, other than DC power supply 1 is using DC constant voltage power supply, remaining is.
Embodiment 10
Compared with Example 1, other than 7 selection of impressed current anode is pure nickel, remaining is in the same manner as in Example 1.
Embodiment 11
Compared with Example 1, other than 7 selection of impressed current anode is nichrome, remaining is in the same manner as in Example 1.
Embodiment 12
Compared with Example 1, other than 7 selection of impressed current anode is nickel silicon alloy, remaining is in the same manner as in Example 1.
Embodiment 13
Compared with Example 1, other than 7 selection of impressed current anode is pure tungsten, remaining is in the same manner as in Example 1.
Embodiment 14
Compared with Example 1, other than 7 selection of impressed current anode is platinum, remaining is in the same manner as in Example 1.
Embodiment 15
Compared with Example 1, other than 7 selection of impressed current anode is platinum plating niobium, remaining is in the same manner as in Example 1.
Embodiment 16
Compared with Example 1, other than 7 selection of impressed current anode is platinized titanium, remaining is in the same manner as in Example 1.
Embodiment 17
Compared with Example 1, other than reference electrode selection is pure nickel, remaining is in the same manner as in Example 1.
Embodiment 18
Compared with Example 1, other than reference electrode selection is nichrome, remaining is in the same manner as in Example 1.
Embodiment 19
Compared with Example 1, other than reference electrode selection is nickel silicon alloy, remaining is in the same manner as in Example 1.
Embodiment 20
Compared with Example 1, other than reference electrode selection is platinum plating niobium, remaining is in the same manner as in Example 1.
Embodiment 21
Compared with Example 1, other than reference electrode selection is platinized titanium, remaining is in the same manner as in Example 1.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (10)
1. a kind of electron anode of phase-transition heat-storage equipment protects erosion protection system, which is characterized in that phase-transition heat-storage equipment includes gold
Belong to gallbladder and the heat exchange metal coil pipe that is placed in metal gallbladder, the hydration salt phase as heat storage medium is also contained in the metal gallbladder
Become material, the erosion protection system includes DC power supply, impressed current anode and reference electrode, wherein the DC power supply is born
Pole connects the metal gallbladder and heat exchange metal coil pipe, and anode connects the impressed current anode, which is also inserted into hydration salt
In phase-change material, and it is isolated with metal gallbladder and heat exchange metal coil pipe electrical isolation, inside the reference electrode insertion heat storage medium, and
The positive or negative pole of bulk potential test equipment is connected in measurement.
2. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The hydrated salt class phase transformation material is one or more of lithium hydroxide, a water sodium hydroxide or barium hydroxide octahydrate
Combination.
3. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The metal gallbladder is made of stainless steel, and the stainless steel is selected from one kind of stainless steel 201, stainless steel 304 or Stainless steel 316
Or several combination；
The heat exchange metal coil pipe is bronze pan tube or copper alloy coil pipe.
4. a kind of electron anode of phase-transition heat-storage equipment according to claim 3 protects erosion protection system, which is characterized in that
Metal gallbladder is bigger by protected area ratio with heat exchange metal coil pipe, and the protecting current density of current and power supply output is also bigger, specifically
Are as follows:
When metal gallbladder is 9:10 by protected area ratio with heat exchange metal coil pipe, the protecting current density of DC power supply output is
46mA/m2,
When metal gallbladder is 4:3 by protected area ratio with heat exchange metal coil pipe, the protecting current density of DC power supply output is
54mA/m2。
5. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The ripple factor of the DC power supply is potentiostat, galvanostat, DC constant flowing power, DC constant voltage electricity less than 5%
The combination of one or more of source, LED illumination DC power supply or power supply adaptor.
6. a kind of electron anode of phase-transition heat-storage equipment according to claim 5 protects erosion protection system, which is characterized in that
The DC power supply is DC constant flowing power or DC constant voltage power supply.
7. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The impressed current anode is one of pure nickel, nichrome, nickel silicon alloy, pure tungsten, tungsten alloy, platinum, platinum plating niobium or platinized titanium
Or several combination；
The reference electrode is one or more of pure nickel, nichrome, nickel silicon alloy, platinum, platinum plating niobium or platinized titanium
Combination.
8. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The insulating sleeve that it is isolated with metal gallbladder, heat exchange metal coil pipe electrical isolation, the insulating sleeve are cased with outside the impressed current anode
Upper aperture simultaneously makes impressed current anode and hydrated salt class phase transformation material.
9. a kind of electron anode of phase-transition heat-storage equipment according to claim 1 protects erosion protection system, which is characterized in that
The impressed current anode is cylindrical or ribbon；
The metal gallbladder is rounded or rectangular.
10. a kind of electron anode of phase-transition heat-storage equipment protects anti-corrosion method, phase-transition heat-storage equipment includes metal gallbladder and is placed in
Heat exchange metal coil pipe in metal gallbladder is also contained with the hydrated salt class phase transformation material as heat storage medium in the metal gallbladder,
It is characterized in that, the described method comprises the following steps:
(1) metal gallbladder is connected to the cathode of DC power supply with heat exchange metal coil pipe respectively using conducting wire, meanwhile, by the direct current
The anode in source is connect with the impressed current anode in insertion water and salt phase-change material, impressed current anode and metal gallbladder and the metal coil pipe that exchanges heat
Isolation is remained electrically isolated from, then the reference electrode insertion water and salt class phase transformation of the positive or negative pole of bulk potential test equipment will be connected
In material, electron anode protection system building is completed；
(2) DC power supply is opened, and exports the protecting current density of setting, that is, realizes the anticorrosion to the phase-transition heat-storage equipment
Protection.
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| CN201711016066.XA CN109706457B (en) | 2017-10-26 | 2017-10-26 | Electronic anode protection anti-corrosion device and method for phase change heat storage equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029173A1 (en) * | 2021-08-31 | 2023-03-09 | 无锡小天鹅电器有限公司 | Electrolysis assembly and laundry treatment device |
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| CN109706457B (en) | 2023-10-20 |
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