EP0522108A1 - Wear indicator for consumable anodes. - Google Patents
Wear indicator for consumable anodes.Info
- Publication number
- EP0522108A1 EP0522108A1 EP92902421A EP92902421A EP0522108A1 EP 0522108 A1 EP0522108 A1 EP 0522108A1 EP 92902421 A EP92902421 A EP 92902421A EP 92902421 A EP92902421 A EP 92902421A EP 0522108 A1 EP0522108 A1 EP 0522108A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode
- indicator according
- consumption indicator
- signal
- anode body
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—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
Definitions
- the invention relates to a consumption indicator for sacrificial anodes, in particular for water tanks and water heaters, which is fastened to the tank wall with a connecting sleeve having a longitudinal bore, the connecting sleeve at one end via an anode body provided with a test space and at its other end with a is connected to a transparent hood provided with a signal cartridge, in the interior of which a signal triggering signal after the consumption of the anode body is inserted.
- a consumption indicator of such a sacrificial anode in the form of a color change cartridge is known for example from DE 38 26 760 C1.
- the consumption of the sacrificial material can be visually perceived by color change.
- containers of a certain type for example with heating oil tanks installed underground, that it is very difficult to inspect them visually.
- From DE 37 26 090 C2 it is known to provide a sacrificial anode with a connecting piece, to provide the connecting piece with a longitudinal bore and a transverse bore and to provide in the longitudinal bore a sensor which extends into the transverse bore and which has a remote display via an electrical signal line connected is.
- the object of the present invention is to provide a consumption display of the type described in the introduction, in which a consumption display takes place in the earliest possible stage of consumption of the anode body.
- the signal means is a hygroscopic capsule provided with optical display means, a membrane or an extendable pin body.
- a gelatin capsule containing a dye is inserted into the interior of the signal cartridge hood. When moisture penetrates, the gelatin dissolves and, for example, a dye is released.
- any other substance can be used that is dissolved by air humidity or water, such as sugar.
- a colored pin body can be pushed depending on the pressure into the interior of the signal cartridge hood, or that the membrane is designed to be rubber-elastic and pressure-dependent, occupying a shape that fills the interior of the signal cartridge hood. In both cases, it is provided that the membrane or the pin body is not visible in the interior of the signal cartridge hood in the idle state. In this version, a hidden signaling device is protected against interference by air or water pressure or by its own buoyancy brought into the field of view of the signal cartridge.
- the signal cartridge hood is provided with a ventilation opening.
- a plunger to be actuated by the membrane or the push-out pin body is guided in the ventilation opening of the signal cartridge hood, the plunger actuating a device which opens or closes a circuit.
- the anode body is an extruded part with an iron anode core.
- an iron anode core In order to prevent the pressure, water or moisture from entering the test chamber prematurely if the connection between the metal of the anode body, usually magnesium, and the iron core is not tight, it is provided that on the side opposite the signal cartridge hood one up to the Anode core-reaching blind hole extends in the anode body and a closure means, for example a grub screw, screwed into the inner end of the blind hole is screwed into the inner end of the blind hole.
- the signal cartridge is provided with a transDarent hood, in the interior of which a colored membrane associated with the longitudinal bore opening can be unfolded.
- the membrane is, for example, a small colored rubber balloon that is inflated by the air in the longitudinal bore and fills the interior of the signal cartridge hood.
- a gelatin capsule enclosing a water-insoluble, colored core is inserted into the interior of the signal cartridge.
- FIG. 1a shows the schematic representation of a container wall with an adaptable sacrificial anode connected
- FIG. 2 shows the schematic representation of a sacrificial anode connected to a container wall, with an extendable pin body inserted in the closed test space;
- Figure 3 shows the detailed representation of a sacrificial anode with a blind hole and inserted gelatin capsol, with a screw cap closure;
- FIG. 4 shows a sacrificial anode, with a metal body inserted into the connection sleeve and the test space, which extends into the anode body;
- FIG. 5 shows the individual part representation of a sacrificial anode, with a closure means screwed in with a blind hole and sealed against the anode core;
- 5a shows the detailed representation corresponding to the detail "X" in FIG. 5;
- Figure 7 shows the detailed representation of a signal body in
- Figure 8 shows the detailed representation of a signal body in
- FIG. 9 shows the detailed illustration of a transparent signal cartridge hood, with a membrane in the inflated and non-inflated state
- FIG. 10 shows a consumption display according to FIG. 9, with a switch for an electrical display circuit that can be confirmed by the membrane or an extendable pin body.
- 1 shows an enamelled steel inner container wall 25 which is surrounded by insulation 22 and covered with an outer jacket 44.
- a nozzle 41 is welded to the container wall 25, into which a sacrificial anode 10 projecting into the container interior 51 is screwed in a liquid-tight manner.
- the figure 10 shown in detail in FIG. 1a essentially consists of an anode body 11 in which a test space 15 and a connecting sleeve 18 connected to it are provided.
- the test space 15 runs longitudinally in the connecting sleeve 18 and has transverse bores 17 through which it is connected to the material of the anode body 11, preferably magnesium.
- an anode body 19 of any size can be attached to the anode body 11.
- the additional anode body 19, like the anode body 11, is provided with an iron anode core 12, which is attached in FIG Rem projecting free end 14 is provided with a thread 16. With this thread 16 it can be screwed into a corresponding thread 16 of the connecting sleeve 18.
- the entire sacrificial anode 10 is inserted with its connecting sleeve 18 into the socket 41 in the schematically illustrated container wall 25 and held in position with the interposition of a seal 28 with a screw connection 27 and a retaining flange 26.
- the connecting sleeve 18 is provided with a longitudinal bore 21 which merges into the test space 15.
- the sacrificial anode 10 can also be provided with a test space 15 designed as a blind hole 29.
- An iron core 12 ends in this test space 15.
- the anode body 11 is sealed against a container wall 25 by means of a seal 23 and held with a screw connection 27, which can be screwed onto the external thread 39 of the connecting sleeve 18.
- a pin body 35 can be inserted invisibly into the blind hole 29 in the idle state.
- the magnesium sacrificial material of the anode body 11 is used due to corrosion, water penetrates into the blind hole 29.
- the pin body 35 is thereby pushed out of the blind hole 29 and is perceptible, for example, in a transparent signal cartridge hood 32 shown in FIG.
- a gelatin capsule 34 which contains an intensely coloring dye 38 can also be inserted into the test space 15, which is closed on all sides in this way, as shown in FIG. 3. After consumption of the anode body 11, water or moisture penetrates into the interior 20 and dissolves the gelatin capsule 34. As a result, the dye 38 is released and colors the water in the interior 20 or also the entire liquid content of the container 25. This latter change in color can then be made perceivable, for example, through a sight glass (not shown) or another display.
- the blind hole 29 can also be closed off from the outside by a screw cap 40.
- a counter nut 23 can be assigned to the screw cap 40, a holder being able to be enclosed between the screw cap 40 and the counter nut 23.
- the sacrificial anode 10 still consists of a base 31, preferably a plastic part, into which a transparent signal cartridge hood 32 is screwed from the outside.
- a membrane 33 invisible in its idle state, is inserted in the signal cartridge hood 32. The edges of the membrane 33 are held by the lower edge 53 of the transparent signal cartridge hood 32.
- the base 31 and the Si ⁇ nalpatronenhaube 32 are each provided with a thread 54.
- air with an overpressure first penetrates from the container 25 into the test space 15, which passes through the lantern bore 21 and the longitudinal bore opening 21a and presses against the membrane 33.
- the membrane 33 which is designed as a colored rubber balloon, is thereby inflated into its unfolded shape 33a, as is shown in broken lines in FIG.
- the transparent signal cartridge hood 32 is provided with a ventilation opening 45 on its end opposite the longitudinal bore opening 21a.
- the signal cartridge 13, as also shown in FIG. 5, is screwed with its longitudinal bore 21 with the interposition of sealing rings 36 over the base 31 onto the connecting sleeve 18.
- an anode core in the form of a metal body 24 can also be inserted, for example screwed, into the connecting sleeve 18 and into the test chamber 15 connected to it.
- the connecting sleeve 18 and the test space 15 are aligned, and the metal body 24, for example a nail, is inserted flush into both during manufacture during the casting with the sacrificial material of the anode body 11.
- the metal body 24 projects with its lower free edge 30 with a projection 37. After the anode body 11 has solidified, the metal body 24 can be reused be pulled out.
- the metal body 24 extends with its projection 37 far beyond the lower edge 30 of the test space 15 and into the anode body 11. In this embodiment, an anode core is not provided, rather the test space 15 is extended into the anode body 11.
- the anode body 11 can also consist of an extruded material encapsulated with an iron anode core 12. This can lead to leaks between the materials of the anode core 12 and the anode body 11.
- the anode body 11 is therefore provided with a blind hole 29 extending up to the anode core 12 and an internal thread 55, in the lower end 50 of which - as FIG. 5a shows in detail - a grub screw 42 with a seal 43 can be screwed in a sealing manner.
- a flexible, colored membrane 33 can be used as the signal body, which is arranged in the base 31 in the region of the longitudinal bore opening 21a, folded up.
- the membrane 33 is, for example, bright red and can be inflated by the displaced air when water enters the test space 15 until it fills the entire interior 20 of the signal cartridge hood 32.
- FIG. 7 shows, it is in the signal cartridge 13 Layable gelatin capsule 34 filled with a dye 38, for example a red dye.
- a dye 38 for example a red dye.
- the gelatin dissolves - as described above - and the dye 38 is released.
- the interior 20 of the signal cartridge hood 32 is thereby colored, for example, signal red and indicates the consumption of the sacrificial anode 10.
- a colorless gelatin capsule 34 as shown in detail in FIG. 8, which encloses a colored core or pin body 35, can also be inserted into the interior 20 of the signal cartridge hood 32. After water has penetrated from the test space 15, the gelatin capsule 34 dissolves and the colored core 35 is visible through the transparent signal cartridge hood 32. This has the advantage that no dye can flow back into the water tank, not shown. Such a fixed pin body 35 does not change and remains visible for a long time.
- an electrical circuit 48 provided with a switch 47 is provided, with which a signal lamp 49 located away from the container 25 can be switched on.
- an actuating plunger 46 can be guided through the ventilation opening 45 the switch 47 can be brought into operative connection.
- the actuating plunger 46 can be actuated, for example, by the inflating üeiabran 33 or the extending pin body 35 or a similar device.
- the circuit 48 can also be closed by two strip-shaped electrodes (not shown) lying next to one another on the inside of the transparent - or in this case non-transparent - signal cartridge hood 32 which can be bridged by the membrane 33 .
- the membrane 33 can be metallized on its surface at least in the region of the electrodes.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Cable Accessories (AREA)
- Earth Drilling (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
Claims
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4042312 | 1990-12-31 | ||
| DE4042312 | 1990-12-31 | ||
| DE9104100U DE9104100U1 (en) | 1990-04-04 | 1991-03-30 | Color change cartridge as consumption indicator for a sacrificial anode with remote display |
| DE9104100U | 1991-03-30 | ||
| DE4117781 | 1991-05-28 | ||
| DE19914117781 DE4117781A1 (en) | 1991-05-28 | 1991-05-28 | Sacrificial anode wear indicator |
| DE4124930A DE4124930A1 (en) | 1991-07-25 | 1991-07-25 | Sacrificial anode wear indicator |
| DE4124930 | 1991-07-25 | ||
| DE9113267U | 1991-10-22 | ||
| DE9113267 | 1991-10-22 | ||
| PCT/DE1991/001019 WO1992012277A1 (en) | 1990-12-31 | 1991-12-31 | Wear indicator for consumable anodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0522108A1 true EP0522108A1 (en) | 1993-01-13 |
| EP0522108B1 EP0522108B1 (en) | 1995-11-22 |
Family
ID=27511475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92902421A Expired - Lifetime EP0522108B1 (en) | 1990-12-31 | 1991-12-31 | Consumable anode with wear indicator |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0522108B1 (en) |
| AT (1) | ATE130637T1 (en) |
| AU (1) | AU9118591A (en) |
| DE (1) | DE59106951D1 (en) |
| WO (1) | WO1992012277A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461260A (en) * | 2017-09-15 | 2017-12-12 | 潍柴重机股份有限公司 | Charge air cooler anticorrosion spelter loading device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2520105A1 (en) * | 2003-05-06 | 2004-11-25 | Performance Metals, Inc. | Wear indicator for sacrificial anode |
| DK3568506T3 (en) * | 2017-01-12 | 2021-03-01 | Corron As | Offeranode |
| ES2794223A1 (en) * | 2019-05-17 | 2020-11-17 | Guadalupe Francisco Pelluz | GALVANIC PROTECTION DEVICE (Machine-translation by Google Translate, not legally binding) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2658707A1 (en) * | 1973-10-13 | 1978-06-22 | Ludwig Hoessle | Cathodic protection appts. using sacrificial anode - where alarm signal indicates end of working life of the anode |
| DE3007857A1 (en) * | 1980-01-10 | 1981-09-03 | Ludwig 1000 Berlin Hössle | Sacrificial anode with trigger indicating when anode is spent - where trigger moves Bowden cable to actuate visible trigger or switch |
-
1991
- 1991-12-31 AU AU91185/91A patent/AU9118591A/en not_active Abandoned
- 1991-12-31 WO PCT/DE1991/001019 patent/WO1992012277A1/en not_active Ceased
- 1991-12-31 AT AT92902421T patent/ATE130637T1/en not_active IP Right Cessation
- 1991-12-31 DE DE59106951T patent/DE59106951D1/en not_active Expired - Fee Related
- 1991-12-31 EP EP92902421A patent/EP0522108B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9212277A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461260A (en) * | 2017-09-15 | 2017-12-12 | 潍柴重机股份有限公司 | Charge air cooler anticorrosion spelter loading device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59106951D1 (en) | 1996-01-04 |
| EP0522108B1 (en) | 1995-11-22 |
| AU9118591A (en) | 1992-08-17 |
| ATE130637T1 (en) | 1995-12-15 |
| WO1992012277A1 (en) | 1992-07-23 |
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