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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
Application number
Other languages
German (de)
Inventor
Oerlikon Maschinenfabrik
Original Assignee
Oerlikon Maschf
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 Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH228427A publication Critical patent/CH228427A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60Constructional parts of cells
    • C25B9/65Means for supplying current; Electrode connections; Electric inter-cell connections
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/036Bipolar electrodes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen 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)

PATENTANSPRUCH: Einrichtung zum Abdichten der Isolier- rohre von Zellenverbindungen an Bipolar- Elektrolyseuren, dadurch gekennzeichnet, dass sie aus einer Doppeldichtung besteht, deren einer Teil gegen Elektrolyt und deren anderer Teil gegen Gas abdichtet. UNTERANSPRÜCHE: 1. Einrichtung nach Patentanspruch, da durch gekennzeichnet, dass der eine Teil der Doppeldichtung als Stirnflächendichtung (1) und der andere Teil als Stopfbüchsendich- tung (\?) ausgebildet ist. 2. PATENT CLAIM: Device for sealing the insulating tubes of cell connections on bipolar electrolyzers, characterized in that it consists of a double seal, one part of which seals against electrolyte and the other part against gas. SUBClaims: 1. Device according to patent claim, characterized in that one part of the double seal is designed as a face seal (1) and the other part as a stuffing box seal (\?). 2. Einrichtung nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass die Stopfbiichsendichtung (2) das Iso- lierrohr (3) an die Stirnfläehendichtung (1) presst. 3. Einrichtung nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass das Isolierrohr (3) am abzudichtenden Ende konisch verdickt ist, wobei die Stopf büchsendichtung (2) eine Achsialkomponentss auf das Isolierrohr (3) ausübt. Device according to patent claim and dependent claim 1, characterized in that the stuffing box seal (2) presses the insulating tube (3) against the end face seal (1). 3. Device according to claim and dependent claim 1, characterized in that the insulating tube (3) is conically thickened at the end to be sealed, the stuffing bushing seal (2) exerting an axial component on the insulating tube (3). 4. Einrichtung nach Patentanspruch und Unteransprüchen 1 und 3, für Isolierrohre aus Glas, dadurch gekennzeichnet, da,ss die konische Verdickung des Isolierrohres durch Stauchen der Rohrenden im warmen Zustand hergestellt ist. 5. Einrichtung nach Patentanspruch, da durch gekennzeichnet, da.ss die Stirnflächen dichtung (1) aus einem gegen anodische Oxy-@ dation widerstandsfähigen Material und die Stopfbüchsendichtung (2) aus einem elasti schen, gasdichten Weichdichtungsmaterial besteht. 4. Device according to claim and dependent claims 1 and 3, for insulating tubes made of glass, characterized in that the conical thickening of the insulating tube is made by upsetting the tube ends in the warm state. 5. Device according to claim, characterized in that the end face seal (1) consists of a material resistant to anodic oxydation and the stuffing box seal (2) consists of an elastic, gas-tight soft sealing material.
CH228427D 1942-10-28 1942-10-28 Device for sealing the insulating tubes of cell connections on bipolar electrolysers. CH228427A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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