CH228427A - Device for sealing the insulating tubes of cell connections on bipolar electrolysers. - Google Patents
Device for sealing the insulating tubes of cell connections on bipolar electrolysers.Info
- Publication number
- CH228427A CH228427A CH228427DA CH228427A CH 228427 A CH228427 A CH 228427A CH 228427D A CH228427D A CH 228427DA CH 228427 A CH228427 A CH 228427A
- Authority
- CH
- Switzerland
- Prior art keywords
- seal
- sealing
- insulating
- insulating tube
- insulating tubes
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 3
- 244000059549 Borneo rubber Species 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
- C25B11/036—Bipolar electrodes
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Insulating Bodies (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Einrichtung zum Abdichten der Isolierrohre von Zellenverbindungen an Bipolar-Elektrolyseuren. Bei einer üblichen Bauart von Bipolar- Elektrolyseuren mit Elektrolytumwälzung werden die Gasableitungen der einzelnen Zellen, durch die ein Gemisch von Gas und Elektrolyt strömt, über Isolierrohre mit den Gasabscheidern verbunden. Die Beanspru chung dieser Rohre ist sowohl mechanischer als auch thermischer, chemischer und-elektri- scher Art,
was sich insbesondere an den Dich tungsstellen bei den Rohrenden erschwerend auswirkt. Es tritt nämlich hier gleichzeitig a) Cavitation durch wirbelnde Strömung der mit Gasblasen durchsetzten Flüssigkeit, b) rascher Temperaturwechsel durch stoss weisen Austritt des Elektrolyten, und c) che mischer Angriff durch den Elektrolyt (mei stens heisse Alkalilösungen) sowie d) anodi@ sehe Oxydation durch die an den metallisch leitenden Teilen bei den Enden des Rohres entstehende Elektrolyse auf.
Erfindungsgemäss wird zur Abdichtüng unter diesen erschwerten Bedingungen eine Doppeldichtung verwendet, deren einer Teil gegen Elektrolyt und deren anderer Teil gegen Gas abdichtet.
Beispielsweise ist der eine Dichtungsteil, wie das auf der beiliegenden Zeichnung ge zeichnete Ausführungsbeispiel des Erfin dungsgegenstandes zeigt, als Stirnflächen dichtung 1 und der andere Teil als Stopf büchsendichtung 2 ausgebildet. 3 ist das Iso- lierrohr. Die Teile 4, 5 und 6 stellen die Press- anordnung dar.
Die Stopfbüehsendichtung 2 ist ferner so gestaltet, dass sie die Aaspres sung des Rohrendes gegen die Stirnflächen dichtung 1 bewirkt, wodurch eine besondere Anpressungsanordnung für die Stirnflächen dichtung überflüssig ist. Hierzu ist das Iso lierrohr 3 an seinen Enden konisch verdickt, so dass die Stopfbüchsendichtung 2 eine Ach sialkomponente auf das Rohr 3 ausübt. Gleichzeitig wird die seitliche Aaspressung der Stopfbüchsendichtung 2 infolge der Keil wirkung des sich nach unten verengenden Ringspaltes erhöht.
Die Verdickung des Isolierrohres 3 nach den Enden zu verstärkt dasselbe und erhöht seine Widerstandsfähigkeit gegen Abnüt zung. Besteht das Isolierrohr aus Glas, dann! erfolgt zweckmässig diese Verdickung durch Stauchen der erwähnten Rohrenden, was aucb ein Verschliessen vorhandener Ziehfäden be wirkt.
Für die Stirnflächendichtung 1 wird ein Material gewählt, das gegen anodische Oxy dation widerstandsfähig ist (z. B. Gummi- Asbest), während die Stopfbüchsendichtung 2 aus einem elastischen, gasdichten Weich dichtungsmaterial, z. B. Gummi, gebildet wird.
Device for sealing the insulating tubes of cell connections on bipolar electrolysers. In a conventional design of bipolar electrolyzers with electrolyte circulation, the gas discharge lines of the individual cells, through which a mixture of gas and electrolyte flows, are connected to the gas separators via insulating tubes. The stress on these pipes is mechanical as well as thermal, chemical and electrical,
which is particularly difficult at the sealing points at the pipe ends. This is because at the same time a) cavitation due to the swirling flow of the liquid permeated with gas bubbles, b) rapid temperature change due to the sudden escape of the electrolyte, and c) chemical attack by the electrolyte (usually hot alkali solutions) and d) anodic oxidation due to the electrolysis occurring on the metallic conductive parts at the ends of the tube.
According to the invention, a double seal is used for sealing under these difficult conditions, one part of which seals against electrolyte and the other part against gas.
For example, one sealing part, as shown in the embodiment of the invention shown in the accompanying drawing, is designed as an end face seal 1 and the other part as a stuffing box seal 2. 3 is the insulating tube. Parts 4, 5 and 6 represent the press arrangement.
The stuffing box seal 2 is also designed so that it causes the compression of the pipe end against the end face seal 1, whereby a special contact pressure arrangement for the end face seal is superfluous. For this purpose, the insulating tube 3 is conically thickened at its ends, so that the stuffing box seal 2 exerts an axial component on the tube 3. At the same time, the lateral squeezing of the gland seal 2 is increased due to the wedge effect of the downwardly narrowing annular gap.
The thickening of the insulating tube 3 towards the ends to reinforce the same and increase its resistance to Abnüt tion. If the insulating tube is made of glass, then! this thickening is expediently carried out by upsetting the pipe ends mentioned, which also acts as a closure of existing pulling threads.
For the end face seal 1, a material is selected that is resistant to anodic Oxy dation (z. B. rubber asbestos), while the gland seal 2 made of an elastic, gas-tight soft sealing material, for. B. rubber is formed.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH228427T | 1942-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH228427A true CH228427A (en) | 1943-08-31 |
Family
ID=4455573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH228427D CH228427A (en) | 1942-10-28 | 1942-10-28 | Device for sealing the insulating tubes of cell connections on bipolar electrolysers. |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH228427A (en) |
| GB (1) | GB571179A (en) |
| SE (1) | SE133593C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998033001A1 (en) * | 1997-01-29 | 1998-07-30 | The Board Of Trustees Of The Leland Stanford Junior University | Micromachined fluidic coupler |
-
1942
- 1942-10-28 CH CH228427D patent/CH228427A/en unknown
-
1943
- 1943-10-25 GB GB17575/43A patent/GB571179A/en not_active Expired
-
1947
- 1947-07-17 SE SE655347A patent/SE133593C1/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998033001A1 (en) * | 1997-01-29 | 1998-07-30 | The Board Of Trustees Of The Leland Stanford Junior University | Micromachined fluidic coupler |
| US5890745A (en) * | 1997-01-29 | 1999-04-06 | The Board Of Trustees Of The Leland Stanford Junior University | Micromachined fluidic coupler |
Also Published As
| Publication number | Publication date |
|---|---|
| SE133593C1 (en) | 1951-11-20 |
| GB571179A (en) | 1945-08-10 |
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