EP0060289B1 - Opferanode mit verbrauchsanzeige und tauchhülse für einen wärmefühler - Google Patents

Opferanode mit verbrauchsanzeige und tauchhülse für einen wärmefühler Download PDF

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Publication number
EP0060289B1
EP0060289B1 EP81902648A EP81902648A EP0060289B1 EP 0060289 B1 EP0060289 B1 EP 0060289B1 EP 81902648 A EP81902648 A EP 81902648A EP 81902648 A EP81902648 A EP 81902648A EP 0060289 B1 EP0060289 B1 EP 0060289B1
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EP
European Patent Office
Prior art keywords
anode
contact
vessel
sacrificial anode
front side
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.)
Expired
Application number
EP81902648A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0060289A1 (de
Inventor
Werner Hössle
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.)
Sibylle Hoessle Te Berlijn Bondsrepubliek Duitsla
Original Assignee
Hossle Sibylle
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6112412&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0060289(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hossle Sibylle filed Critical Hossle Sibylle
Priority to AT81902648T priority Critical patent/ATE18074T1/de
Publication of EP0060289A1 publication Critical patent/EP0060289A1/de
Application granted granted Critical
Publication of EP0060289B1 publication Critical patent/EP0060289B1/de
Expired 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
    • 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
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • 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 sacrificial anode with consumption indicator for the cathodic corrosion protection of static or operating pressurized water containers and water heaters and for containers of other, also electrically conductive media and has the purpose of simplifying sacrificial anodes with consumption indicator with regard to manufacture and their interchangeability on a container and - in the event of elimination of a movable display element of the consumption display - to adapt the installation, maintenance and control conditions in the mentioned area of application in a practical manner.
  • the invention also relates to the structural connection of the sacrificial anode according to the invention to an immersion sleeve for receiving a so-called "heat sensor" in one piece, with the aim of having both control devices equipped with a sacrificial anode and at least one heat sensor using a single screwing process or the like . Like. to be able to insert into one and the same container opening.
  • the latter essentially consists of a pin-like organ which is longitudinally displaceable within a cavity of the anode and / or anode screw connection, which is displaced towards the container wall when the anodic material is used up and when the container medium penetrates into the cavity, and as Consumption signal from the front of the anode screw connection and thus emerges from the container.
  • Sacrificial anodes of this type have proven themselves in many areas of application for cathodic container corrosion protection and have found their way into practice over a wide area. They are able to actuate remotely installed display means by mechanical or electrical means by means of the pen-like organ. From an economic point of view, such sacrificial anodes with consumption indicators are disadvantageous, particularly in the case of the serial factory equipment of small and medium-sized containers with such sacrificial anodes, since their production price for this container series article, for which a particularly favorable overall price must be sought, in one unfavorable ratio.
  • the display mechanism in the form of the pin-like, longitudinally displaceable member requires, in particular because of the assembly activity required here, a higher manufacturing and thus a higher cost.
  • an arrangement has also become known in which an electrical measurement, e.g. Current measurement, by comparing anode volume values with corresponding electrical values, conclusions can be drawn about the state of consumption of the anode rod.
  • the sacrificial anode must be electrically insulated from the container, screwed into the container and, to maintain the function of the cathodic corrosion protection with the container, via a detachable wire line or the like. be connected. If a measurement is to be made, the wire or the like is. solved and interposed an electrical measuring device. Such a test procedure is cumbersome and time consuming. It can only be carried out by a specialist.
  • a comparison table or the like is available for each anode size. with opposite anode volume values and electrical values.
  • Containers of the type mentioned generally have to be equipped with a heat control device, a heat sensor, if they contain heated media. Since such containers are usually also equipped with a sacrificial anode, manual interventions such as drilling, welding and the like are required at two points in the container with considerable expenditure of time and money. to make both devices in the container in their effective position. For example, a tube that is closed at one end, the immersion sleeve, is let in for the heat sensor through a hole in the container and is welded to the hole with its open end face, which is then or the like at its insertion opening by a stopper.
  • the invention has for its object that when using the known sacrificial anodes with consumption indicator for water tanks and water heaters, especially small and Medium containers to eliminate existing disadvantages and also to find a solution to be able to mount both control devices in one and the same container bore while equipping a container with a sacrificial anode and a heat sensor.
  • this is achieved with respect to the sacrificial anode in that instead of a pin-like, longitudinally displaceable display element, two externally accessible, penetrating the anode screw connection, electrically insulated from one another and reaching into an end cavity of the anode rod, but at least spatially connected to it, are arranged enable the connection of an optically and / or acoustically acting electrical signal device at their externally accessible ends, and which, with their other ends spatially connected to the cavity of the anode rod, act as an electrical switch as soon as the anode rod is used up, thereby containing water in the container Cavity penetrates, wets or surrounds the contact parts and thereby closes electrically.
  • the effectiveness of the switch bridge formed by container water depends on two criteria governed by the invention, which can be seen in the ratio of the electrical conductivity of water: contact distance: test voltage and in the air column in the cavity, which counteracts the entry of water.
  • the electrical conductivity of the water can be determined by using a tableted, suitable agent such as salt, e.g. NaCI, for example between the contact ends and the anode rod, which agent dissolves when water enters it.
  • suitable agent such as salt, e.g. NaCI
  • the other criterion is based on the fact that the air can be compressed depending on the pressure of the container medium and the compression limit.
  • the contact ends When using the sacrificial anode for containers that are subject to a higher pressure (mostly containers with operating pressure), the contact ends may therefore have a calculable greater distance from the potential water entry point, whereas when using them for containers with low pressure (mostly containers with static pressure) ) the contact ends are to be brought close to the potential water entry point.
  • the last-mentioned embodiment provides the need to shorten the iron core present in the anode rod within the cavity in the anode rod, so that in the case of containers with higher pressures, sacrificial anodes with the greater distance from the potential water entry point are to be preferred.
  • the electrical signal device can be connected to the contact ends accessible from the outside of a container either by means of a permanently connected circuit of an optical and / or acoustic signal fed by the secondary side of a mains transformer, or by a connection contacts against the contact ends of the, if required Manual device to be pressed with an optical and / or acoustic signal device and its own battery power source, which corresponds to the mode of operation of an ohmmeter or a continuity tester.
  • Such a manual device is particularly suitable for use by laypeople if a forced removal of contacts to counterpress the device is provided, which excludes contact removal errors, and since the meaning of the signal types mentioned when they take effect cannot be misunderstood.
  • the contact parts of the sacrificial anode can be designed from the outset for one or the other type of consumption display.
  • the principle according to the invention while taking into account a detachable, self-sealing attachment of the anode rod to the anode screw connection, enables a very simple, economical and therefore inexpensive production of a sacrificial anode suitable for water tanks and water heaters with consumption display, which is also extremely robust due to the lack of a displaceable display element and therefore also From this point of view, it is particularly well suited for a less individualized mass installation in serial containers ex works.
  • the sacrificial anode according to the invention with consumption indicator consists of an anode screw connection, preferably injection molded plastic, which is used to fasten the sacrificial anode in a container bore into which - the anode screw connection penetrates in the axial direction and at both ends this outstanding - the one, designed as a contact sleeve contact part is injected, as well as in a screw bush made exclusively of plastic, into which the other contact part designed as a contact pin is injected.
  • the contact sleeve has an external thread at its one end facing the anode rod for the anode rod to be screwed on, and an internal thread at its other end for screwing in the screw bushing carrying the contact pin.
  • the contact pin protruding into the contact sleeve is from the contact sleeve through the plastic screw bushing electrically isolated and separated in its exposed area within the contact sleeve by a cylindrical air gap from the contact sleeve.
  • the contact pin either extends to the end of the contact sleeve (at low tank pressure) or (with uncut iron core of the anode bar and higher tank pressure) so that there is a distance between the contact pin and the anode bar when the anode bar is screwed on.
  • the contact pin can carry a thread and a nut for attaching a cable lug on its outwardly projecting short end, whereas another cable lug for connecting the contact sleeve to the screw socket of the contact pin is attached to the contact sleeve.
  • the contact parts are designed for the connection of a manual device only as required, the cable lugs are eliminated.
  • the end of the contact pin is flat or lenticular and the diameter of the contact sleeve is larger than the diameter of the screw socket, so that the other, approximately sleeve-shaped device contact can be placed over the screw socket until it comes into metallic contact with the contact sleeve.
  • the anode rod has on its one end face, in a manner known per se, a sack-shaped threaded hole into which the free end of the iron core of the anode rod projects.
  • a circular groove is drawn on the anode end face around the blind bore, which carries an O-ring as a seal between the anode rod and the anode screw connection.
  • both the anode rod and the anode screw connection can be easily and simply sealed and reliably sealed against pressurized container medium, connected to one another, and the anode rod can be replaced easily and simply by a new one after its use, without having to unscrew the sacrificial anode from the container as a whole , and, if at the same time this can be connected to the cleaning of the container after loosening a front cover of the container.
  • the screw connection between the anode rod and the anode screw connection offers the economically prime advantage that after the anode rod has been used up, the anode screw connection and signal or contact transmitter no longer need to be thrown away, as was previously the case.
  • the contact sleeve is - as mentioned above - connected to the container via a metallic line
  • the attachment of the Line on the container can be done by means of a permanent magnet.
  • This device which is required because of the plastic anode screw connection, can be used for the control method specified in the "state of the art" by interposing an electrical measuring device, since only the line on the contact sleeve needs to be disconnected for this, and once the progress of consumption has been reached of the anodic material and not just the final consumption.
  • the anode screw connection consisting of a molded part, preferably a plastic molded part with an injected contact sleeve, is a screw nut, preferably a hexagon nut, with a threaded attachment, so that a sacrificial anode according to the invention which is equipped in this way can be screwed into a threaded sleeve which is customary on containers.
  • the anode consumption can be checked by a fixedly connected signal device or by a manual device.
  • the metallic connection between the anode rod or contact sleeve and the container is established here by a metallic line.
  • such containers are taken into account which are provided with a simple through hole of smaller diameter in the container wall for the attachment of a sacrificial anode.
  • the contact sleeve is - in a similar manner to the anode screw connection - in a disk-shaped Injection molded plastic stopper, in this case with an externally threaded contact connection end from the inside of the container through the through hole of the container and screwed from the outside with a threaded nut along with the usual locking and sealing washers, the screw socket with the contact pin is already screwed to the contact sleeve , if it has a smaller diameter than the contact sleeve, or is screwed onto the contact sleeve by means of its contact sleeve on the container only after the sacrificial anode has been fastened, if it has a larger diameter than the contact sleeve.
  • the anode consumption can be controlled by a fixedly connected signal device or by a manual device. Since the contact sleeve and thus the anode rod is already metallically connected to the container by the metallic fastening screw connection, a special line connection required for producing such a metallic connection is omitted in the other embodiments.
  • the sacrificial anode according to the invention with consumption indicator is basically designed like the first embodiment, but with a larger outside diameter of the anode screw connection and with the addition that at least one immersion sleeve for receiving a heat sensor is now also injected into the body of the anode screw connection parallel to the contact sleeve is, which corresponds approximately to the length of the anode screw connection and is formed at its end facing the interior of the container for a subsequent, also tubular extension.
  • This configuration can preferably consist of an external thread at the end of the immersion sleeve and the like or a ring-shaped separating notch. for easier removal of the closed end face of the immersion sleeve, after which the tubular extension is screwed onto the immersion sleeve.
  • an extension can also be achieved by means of a plug connection.
  • connection contacts one or the other type of control mentioned in the first and second embodiment is also considered here, as is the metallic line connection between the contact sleeve or anode rod and the container wall according to. the first embodiment.
  • a plastic end face cover of a container is the carrier of at least one injected one Immersion sleeve and / or the contact sleeve of the sacrificial anode, so that the immersion sleeve and sacrificial anode or only the sacrificial anode are installed in the container without a special mounting on the container if the end face cover is placed on the container and screwed to it.
  • one or the other type of control mentioned in the first and second embodiment is also considered here, as is the metallic line connection between the contact sleeve or anode rod and the metallic part of the container. the first embodiment.
  • the introduction of a container bore and the welding of a threaded sleeve into it for the assembly of the sacrificial anode and a further container bore together with welding work for the arrangement of the immersion sleeve and according to. the third embodiment saves the last-mentioned container processing.
  • Fig. 1 to 5 and Fig. To 9 can either with a fixed signal device, such as consisting of the fixed cable lug connections 7 and 8, the display means 9 and a e.g. 24 volt power source (e.g. the secondary side of a mains transformer), according to Fig. 1, 5 and 7 may be equipped or only with contact connections 4a and 6 or 8a in Fig.
  • a manual control device such as consisting of the fixed cable lug connections 7 and 8
  • the container 3 and the contact sleeve 6 must be connected to the anode rod 10 by a metallic line 8a, the connection to a container 3 being able to consist of a permanent magnet.
  • the design of the contact parts in all embodiments consists of a contact sleeve 6 injected into the anode screw connection 1, 1a or into the disk-shaped stop part 2 or into the front cover 17 of a container, and from a contact pin 4 which is axially penetrated by a screw bushing 5. is held and arranged by screwing the screw bushing 5 into a threaded bore of the contact sleeve 6 while maintaining a cylindrical air gap to the inner wall of the contact sleeve 6 within the contact sleeve 6.
  • the injection-molded parts 1, 1, 2 and 17 mentioned are preferably made of plastic and the screw bushing 5 is basically made of plastic or another insulating material because of its required electrical insulating effect between contact pin 4 and contact sleeve 6.
  • the contact sleeve 6 is provided with an external screw thread at its end facing the interior of the container, and the end face of the anode rod 10 facing the contact sleeve 6 is provided with a corresponding threaded blind hole and with a self-sealing so-called O-ring 12 lying in an annular groove around the threaded pocket bore.
  • This end of the anode rod 10 is also equipped in a known manner with a protective cap 11 which prevents the premature use of the anodic material in this area.
  • the length of the threaded sleeve 6 depends on the length of the injection-molded part 1, 1a, 2 or 17 carrying it.
  • the length of the signal pin 4 depends on the pressure size of the container medium in question and should run to the end of the contact sleeve 6 at a relatively low pressure , since the air column located in the common interior of the contact sleeve 6 and the blind bore of the anode rod 10 is compressed in this case correspondingly slightly less than at higher pressure by the ingress of the anode rod 10 through its blind bore when the anode rod 10 is consumed, but the penetrating water only through simultaneous air compression can reach the two contact parts 4 and 6, an electrically conductive connection being established by the water bridge.
  • this distance is used to insert a suitably tableted salt, e.g. NaCl, if the water entering after consumption of the anode rod 10 is to be increased in its electrical conductivity, which takes place after the salt has been dissolved in the water.
  • a suitably tableted salt e.g. NaCl
  • the conductivity of the water can be increased as described above. If the two components mentioned are dimensioned correctly, an admixture of this type is not necessary. However, it can also be provided in principle by inserting the tableted salt before screwing on the anode rod 10, if one wishes to be certain of multiple security for each case.
  • FIGS. 4 and 4 are additionally equipped with at least one immersion sleeve 13 for receiving a heat sensor, for which purpose the anode screw connection 1a has a correspondingly larger diameter than the basically identical design according to FIG. Fig. 1, which, like the training acc. Fig. 3, can be screwed into a threaded sleeve of a container 3, as shown in Fig. 1, for example.
  • the immersion sleeve 13 is shown in a length corresponding approximately to the anode screw connection 1a, also because this should be the length that is favorable for production for the injection process.
  • the embodiment acc. 8 and 9, also a combination of sacrificial anode and immersion sleeve 13, corresponds essentially to the embodiment according to. FIGS. 4 and 4.
  • the two control devices are, however, injected into a front cover 17 of a container when it is manufactured in a plastic injection molding process and together form a structural unit.
  • Contact devices 4, 5 and 6 of the anode rod 10 and immersion sleeve 13 are in this case mounted in a base-like cover reinforcement 17b of the end cover 17.
  • the embodiment acc. Fig. 5 which is attached to a container 3 only at a push-through hole of the container and by screwing using a screw nut 15 together with the usual sealing and locking washers, requires as an injection molded part, into which the contact sleeve 6 is injected, only an annular stop part 2 and an additional screw thread for the screw nut 15 on the outwardly white end of the contact sleeve 6. As shown, this embodiment is suitable for a fixed signal device.
  • the screw bushing 5 - in contrast to the drawing - has a smaller diameter than the contact sleeve 6 so that contact with the contact sleeve 6 is possible at which slipping on the approximately sleeve-shaped contact of the device, the other contact arranged inside the approximately sleeve-shaped contact touches the contact pin 4 or its contact surface 4a.

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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)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
EP81902648A 1980-09-17 1981-09-17 Opferanode mit verbrauchsanzeige und tauchhülse für einen wärmefühler Expired EP0060289B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81902648T ATE18074T1 (de) 1980-09-17 1981-09-17 Opferanode mit verbrauchsanzeige und tauchhuelse fuer einen waermefuehler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3035450 1980-09-17
DE19803035450 DE3035450A1 (de) 1980-09-17 1980-09-17 Opferanode mit verbrauchsanzeige

Publications (2)

Publication Number Publication Date
EP0060289A1 EP0060289A1 (de) 1982-09-22
EP0060289B1 true EP0060289B1 (de) 1986-02-19

Family

ID=6112412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81902648A Expired EP0060289B1 (de) 1980-09-17 1981-09-17 Opferanode mit verbrauchsanzeige und tauchhülse für einen wärmefühler

Country Status (3)

Country Link
EP (1) EP0060289B1 (enrdf_load_stackoverflow)
DE (1) DE3035450A1 (enrdf_load_stackoverflow)
WO (1) WO1982001017A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025223A1 (de) * 2006-05-29 2007-12-06 Norsk Hydro Magnesiumgesellschaft Mbh Opferanode für den kathodischen Korrosionsschutz
CN108823571A (zh) * 2018-01-24 2018-11-16 中国船舶重工集团公司第七二五研究所 一种具备临界报警功能的智能海水管路牺牲阳极结构及其腐蚀状态原位监测方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726090A1 (de) * 1987-08-03 1989-02-16 Hoessle Sibylle Opferanode mit verbrauchsanzeige fuer wasserbehaelter und warmwasserbereiter
AT390968B (de) * 1987-09-28 1990-07-25 Rapido Waermetechnik Gmbh Als signalgeber dienende anode
IT8904857A0 (it) * 1989-09-29 1989-09-29 Elle Di Caneppele G E Figli S Anodo sacrificale di protezione contro la corrosione.
CN108954848B (zh) * 2018-08-10 2023-10-13 珠海格力电器股份有限公司 用于提醒阳极层是否消耗完毕的装置、热水器及提醒方法
CN109059292B (zh) * 2018-08-13 2023-01-24 珠海格力电器股份有限公司 镁棒及具有其的热水器
CN109612106A (zh) * 2018-12-25 2019-04-12 武汉海尔热水器有限公司 一种阳极棒的安装结构及热水器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748250A (en) * 1953-08-31 1956-05-29 Smith Corp A O Thermoelectric protective unit
US3306109A (en) * 1963-07-11 1967-02-28 Robertshaw Controls Co Insulator insert for thermal sensing device
DE1258063B (de) * 1965-01-16 1968-01-04 Froeling Fa Geb Heizrohrsystem fuer den Brauchwasserbehaelter eines Warmwasserbereiters
DE1995323U (de) * 1968-08-06 1968-10-24 Buderus Eisenwerk Vorrichtung zur befestigung einer opferanode im wasserbehaelter.
US4051007A (en) * 1975-10-06 1977-09-27 Ludwig Hossle Sacrificial anodes for cathodic protection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025223A1 (de) * 2006-05-29 2007-12-06 Norsk Hydro Magnesiumgesellschaft Mbh Opferanode für den kathodischen Korrosionsschutz
DE102006025223B4 (de) * 2006-05-29 2011-01-27 Magontec Gmbh Opferanode für den kathodischen Korrosionsschutz
CN108823571A (zh) * 2018-01-24 2018-11-16 中国船舶重工集团公司第七二五研究所 一种具备临界报警功能的智能海水管路牺牲阳极结构及其腐蚀状态原位监测方法
CN108823571B (zh) * 2018-01-24 2020-06-23 中国船舶重工集团公司第七二五研究所 一种具备临界报警功能的智能海水管路牺牲阳极结构及其腐蚀状态原位监测方法

Also Published As

Publication number Publication date
DE3035450C2 (enrdf_load_stackoverflow) 1989-06-29
EP0060289A1 (de) 1982-09-22
DE3035450A1 (de) 1982-04-29
WO1982001017A1 (en) 1982-04-01

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