EP3366812A1 - Récipient d'eau doté d'un dispositif formant anode pour protection contre la corrosion - Google Patents

Récipient d'eau doté d'un dispositif formant anode pour protection contre la corrosion Download PDF

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Publication number
EP3366812A1
EP3366812A1 EP18158786.6A EP18158786A EP3366812A1 EP 3366812 A1 EP3366812 A1 EP 3366812A1 EP 18158786 A EP18158786 A EP 18158786A EP 3366812 A1 EP3366812 A1 EP 3366812A1
Authority
EP
European Patent Office
Prior art keywords
water tank
anode
anode device
passage
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18158786.6A
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German (de)
English (en)
Inventor
Gueorgui Kaymakanov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3366812A1 publication Critical patent/EP3366812A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • C23F13/10—Electrodes characterised by the structure
    • 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
    • C23F13/18—Means for supporting electrodes
    • 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

Definitions

  • the invention relates to a water tank with anti-corrosion anode device and corresponding anti-corrosion anode device.
  • a corrosion protection anode e.g. a sacrificial anode
  • a corrosion protection anode which is a piece of base metal used to protect functional parts from other metals, e.g. Iron, steel, and / or brass, is used against contact corrosion, whereby the cheaper material of the sacrificial anode itself destroyed so "sacrificed" is.
  • the function of corrosion-prone and elaborately made functional parts longer guaranteed and costly new procurement postponed or avoided altogether.
  • a sacrificial anode For a sacrificial anode to serve its purpose, it must be in the voltage series of negative (eg, magnesium or zinc) as the metal to be protected.
  • negative eg, magnesium or zinc
  • the metal to be protected is conductively connected to the sacrificial anode.
  • the result is a primary element, which therefore can not be recharged after discharge, and in which the metal to be protected acts as the cathode and the less noble metal as the anode, a current flows in the direction of the metal to be protected. Instead, the less noble sacrificial anode metal releases its electrons to the oxygen, is oxidized, and goes into solution.
  • the water in this local element is the electrolyte, which allows the transport of the charged particles and thus closes the circuit. The sacrificial anode is thus consumed over time and needs to be renewed.
  • magnesium ions are considered health safe to classify, even if the water is used for food preparation.
  • sacrificial anodes are to be regularly examined for wear (decrease in material thickness) and, if necessary, replaced.
  • a maintenance-free variant of corrosion protection anodes are external current anodes that are connected to a DC power source and provide permanent corrosion protection.
  • the corrosive material removal can be effectively prevented.
  • no material removal takes place at the anode in this method.
  • All of these corrosion protection anodes are usually mounted externally accessible to the water tank and extend with their anode material in the interior of the water tank.
  • a drain valve and / or a vent valve is conventionally provided on the water tanks.
  • the drain valves are usually mounted on the lowest point of the water tank and are used for partial emptying or complete emptying of the container to clean it or to replace the corrosion protection anode.
  • Bleed valves are conventionally mounted at a higher location of the water tank to drain any remaining air in the water tank, as well as the presence of an air cushion promotes corrosion.
  • water tanks are usually provided with multiple mounting access from the outside, over which the Anticorrosion anodes and the drain valves and / or vent valve are mounted on the water tank or installed.
  • the Anticorrosion anodes and the drain valves and / or vent valve are mounted on the water tank or installed.
  • the respective required assembly components arise through these mounting access, however, especially in the case of hot water tank additional thermal bridges, so that in addition unwanted heat losses are the result.
  • the object of the invention is to effectively reduce in particular the above problems.
  • the solution according to the invention is given by a water tank as well as by a corrosion protection anode device with the respective features according to appended independent claims. Preferred developments are Schustad the dependent claims.
  • the invention provides a corrosion protection anode device or a water tank, in particular hot water tank, with at least one anticorrosive anode device mounted thereon, wherein a through-channel is guided through the anticorrosive anode device, which leads in the assembled state of the anticorrosion anode device from the interior of the water tank to the outside.
  • the corrosion protection anode can together with a drain and / or vent on one and the same mounting access to the water tank mounting device be appropriate or be. If a passage opening communicating with the through-channel is formed by a holding device formed on the anti-corrosion anode device, in particular a hose-like or tube-like line or also a valve can be inserted in a simple manner. The mounting device can therefore simultaneously take on the additional function of a sleeve.
  • the invention thus opens up the advantageous possibility of reducing the number of thermal bridges present on the water tank and also the required assembly components.
  • Fig. 1 shows in outline an expedient embodiment of a corrosion protection anode device 200 according to the invention.
  • Fig. 1 Referring to this, it has a passageway 220, which is aligned to lead in the mounted state of the anticorrosion anode device to a water tank from the interior of the water tank to the outside.
  • An anticorrosive anode device 200 mounted by way of example on a water tank 100 or a water tank 100 with an anticorrosive anode device 200 according to the invention is in particular the Fig. 2 refer to.
  • the in Fig. 2 water container to be seen also has two feed / removal points 150, through which water can be supplied or removed.
  • Fig. 3 sketchily shows an enlarged section of the water tank Fig. 2 mounted corrosion protection anode device.
  • the corrosion protection anode device expediently has a mounting device 230 for mounting on the water tank.
  • a passage opening 240 communicating with the passage is further formed for the admission of a valve 250, a faucet, not shown in the figures, or a tubular or tubular conduit, not shown in the figures.
  • a valve 250 is already embedded in the mounting device 230.
  • a hose-like or tubular conduit can also be let in or be, to which then, for example, a valve arranged away from the water tank or arranged valve can be fastened.
  • the anticorrosive anode device 230 comprises an anode material 210, which is fastened to the mounting device 230 and is, in particular, exchangeably received by the illustrated mounting device 230.
  • This attachment may e.g. also done by screwing or gluing.
  • alternatively designed mounts can be used in the invention.
  • the passageway 220 is passed through the anode material 210.
  • the through-channel can also be guided laterally past the anode material.
  • the mounting device 230 may in particular be a screw connection device and / or the passage opening 240 of the mounting device 230 is expediently a bore with an incised internal thread.
  • valve 250 (or alternatively also a cock) with a complementarily formed at one end external thread to be screwed in or be already, so that commercially available valves or taps within the scope of the invention Application can come.
  • the valve 250 or alternatively also a cock
  • the mounting device 230 may additionally be clamped between two for improved sealing a gasket 260 for two-sided system or be.
  • the holding device 230 with the anode material exchanged in particular and the valve, tap or tubular or tubular pipe used therefore particularly preferably functions as a type of sleeve for the essentially uninterrupted connection of the anode material 210, in particular the through-channel 220, and the used valve, tap or an inserted line.
  • the mounting device 230 expediently has a mounting end provided with an external thread 235, which can be inserted into a mounting access 160 of the water tank 100 and therefore can be screwed in particularly expediently there.
  • a sealing material (not shown in the figures) between support device 200 and water tank 100 may be arranged and preferably clamped for further improved sealing.
  • the anode material sketched in the figures forms, in particular, a sacrificial anode, for example a magnesium anode.
  • an external current anode can also be used within the scope of the invention.
  • the electrically conductive connection cable to the (r) necessary for the power supply power supply / power source is here in a further preferred, but not shown for clarity reasons additionally guided by the support means, wherein metallic parts the water tank is provided an electrical insulation.
  • the negative pole of the power supply or the current source can then be connected to the metal to be protected and the positive pole to the external current anode or be.
  • corrosion protection anodes in particular magnesium anodes, are used in all kinds of water containers in which the corrosion protection should exist. Such corrosion takes place, for example, due to unfavorable pH values of the water composition, or electrochemical reactions.
  • a passage channel used as an emptying channel is expediently mounted in the lower region of a water container and thus in particular using a corrosion protection anode device according to FIG Invention.
  • the anode material is thus practically upside down.
  • the invention thus offers flexible use in almost any, especially new or expandable, water tank system.
  • Possible applications are e.g. designed for energy surplus and hot water storage water tank or water tank systems. Examples include: process water treatment by solar systems, oil-gas solid fuel boilers, water-bearing stoves, electric batons, combined heat and power plants, district heating and many other energy sources. Also, use in combination with (other) buffer memory is within the scope of the invention.
  • all today coated (enamelled) or stainless steel water tank in particular hot water tank with one or more corrosion protection anodes, especially magnesium anodes, for additional corrosion protection, equipped in the rule.
  • the remaining air in the hot water tank must also be drained via a bleed valve. Therefore, as a rule, all present-day drinking, service and / or hot water storage tanks have at least two assembly accesses including pipe openings in the upper area, e.g. on the lid. Consequently, using the invention, it is always possible to reduce two such assembly accesses, including tube openings, to one or one.
  • a passage channel used as a venting channel or as an emptying channel in particular with an associated valve for venting or emptying, not least due to the small surface area on the mounting device and therefore also at the top of the anticorrosive anode, usually has a small water flow. However, it has been shown that this is sufficient to let out the left-over air from the reservoir, or to bring down the existing water pressure by emptying a few liters of water. Consequently, a corrosion protection anode can thus easily be taken out for maintenance or a used one can be exchanged for a new one.
  • the corrosion protection device according to the invention can be arranged depending on the application and / or prevailing conditions not only in the upper region of a water tank but also laterally or below, in particular at the bottom of the water tank or.
  • a corrosion protection device according to the invention due to the usually low water flow an additional discharge opening will continue to be appropriate.
  • a sufficiently higher water flow can be ensured.
  • an integrated in the corrosion protection device provided as an emptying channel passageway is usually mounted on the lowest point of the hot water tank. This serves for partial emptying or complete emptying of the water tank.
  • a corrosion protection device with an integrated passage channel provided as a vent channel is generally still mounted in the upper area of a water tank, in particular a hot water tank.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)
EP18158786.6A 2017-02-28 2018-02-27 Récipient d'eau doté d'un dispositif formant anode pour protection contre la corrosion Withdrawn EP3366812A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202017101117.8U DE202017101117U1 (de) 2017-02-28 2017-02-28 Wasserbehälter mit Korrisionsschutzanodeneinrichtung

Publications (1)

Publication Number Publication Date
EP3366812A1 true EP3366812A1 (fr) 2018-08-29

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EP18158786.6A Withdrawn EP3366812A1 (fr) 2017-02-28 2018-02-27 Récipient d'eau doté d'un dispositif formant anode pour protection contre la corrosion

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EP (1) EP3366812A1 (fr)
DE (1) DE202017101117U1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652358A (en) * 1950-06-13 1953-09-15 Frank A Mcferran Water heater fittings
US3542663A (en) * 1968-06-06 1970-11-24 Perfection Corp Anode fitting
DD96578A1 (fr) * 1972-04-25 1973-03-20
US3953311A (en) * 1972-10-17 1976-04-27 A. O. Smith Corporation Cathodic protection system
DE4030800A1 (de) * 1989-09-29 1991-04-11 Elle Di Caneppele E Figli 3 Opferanode fuer den schutz gegen korrosion
US20030085117A1 (en) * 2001-11-07 2003-05-08 Ingersoll-Rand Company Cathodic protection system for air compressor tanks

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652358A (en) * 1950-06-13 1953-09-15 Frank A Mcferran Water heater fittings
US3542663A (en) * 1968-06-06 1970-11-24 Perfection Corp Anode fitting
DD96578A1 (fr) * 1972-04-25 1973-03-20
US3953311A (en) * 1972-10-17 1976-04-27 A. O. Smith Corporation Cathodic protection system
DE4030800A1 (de) * 1989-09-29 1991-04-11 Elle Di Caneppele E Figli 3 Opferanode fuer den schutz gegen korrosion
US20030085117A1 (en) * 2001-11-07 2003-05-08 Ingersoll-Rand Company Cathodic protection system for air compressor tanks

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Publication number Publication date
DE202017101117U1 (de) 2017-05-17

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