DE906121C - Electrical insulating tube and method for its manufacture - Google Patents
Electrical insulating tube and method for its manufactureInfo
- Publication number
- DE906121C DE906121C DESCH7374A DESC007374A DE906121C DE 906121 C DE906121 C DE 906121C DE SCH7374 A DESCH7374 A DE SCH7374A DE SC007374 A DESC007374 A DE SC007374A DE 906121 C DE906121 C DE 906121C
- Authority
- DE
- Germany
- Prior art keywords
- insulating tube
- manufacture
- electrical insulating
- coal tar
- tar pitch
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Insulating Bodies (AREA)
Description
Elektrisches Isolierrohr und Verfahren zu seiner Herstellung Bei den bekannten Isolierrohren besteht die Rohrseele aus Papier, und zwar wird sie regelmäßig ,aus Papierstreifen gewickelt, die vorher durch ein flüssiges Bindemittel geführt werden. Anschließend wird das Rohr getrocknet und dann in einem weiteren Arbeitsgang durch Eintauchen in Pech od. dgl. imprägniert und schließlich mit einem Metallmantel versehen.Electrical insulating tube and process for its manufacture known insulating tubes, the tube core is made of paper, and it is regular , wrapped from paper strips previously passed through a liquid binder will. The pipe is then dried and then in a further operation by immersion in pitch or the like. Impregnated and finally with a metal jacket Mistake.
Man kennt auch schon aus Kunstharz im Strang verpreßte Isolierrohre. Solche Rohre sind jedoch für die übliche Installation von Licht- und Kraftleitungen in Gebäuden im allgemeinen zu kostspielig. Sie finden hauptsächlich zur Isolierung von Elementen elektrischer Maschinen und Schaltanlagen Anwendung.One already knows insulating tubes pressed in a strand from synthetic resin. However, such pipes are for the usual installation of light and power lines generally too expensive in buildings. They are mainly used for insulation of elements of electrical machines and switchgear application.
Außerdem ist es bekannt, Isolierrohre aus einer breiigen Masse von gemahlenem Papier od. dgl. und einem Bindemittel unmittelbar in dem vorgefertigten Metallmantel nach dem Ziehverfahren herzustellen. Welche Art von Bindemittel hierzu benutzt wird, gibt die einschlägige Literaturstelle nicht an.It is also known to make insulating pipes from a pulpy mass of ground paper od. The like. And a binder directly in the prefabricated Manufacture metal jacket by the drawing process. What kind of binder for this is used, does not indicate the relevant literature.
Im Unterschied hierzu wird gemäß der Erfindung ein elektrisches Installationsrohr vorgeschlagen, das dadurch gekennzeichnet ist, daß es aus vorzugsweise Füllstoffe enthaltendem Steinkohlenteerpech besteht.In contrast to this, according to the invention, an electrical conduit is used proposed, which is characterized in that it is preferably made of fillers containing coal tar pitch.
Bei der Herstellung dieses Rohres verfährt man am besten in der Weise, daß man Steinkohlenteerpech zunächst durch Erhitzen flüssig macht und es dann mit den Füllstoffen, z. B. mit Holzmehl oder auch anorganischen Stoffen, durchmischt, die in solcher Menge zugegeben werden, daß dabei eine formbare Masse entsteht. Diese Masse wird darauf mit Hilfe einer an sich bekannten Rohrstrangpresse mit,geeignetem, zweckmäßig heizbarem Mundstück zu einem Rohrstrang verpreßt. Das so entstandene Rohr kühlt man dann erforderlichenfalls noch ab und umgibt es schließlich, wie im eingangs erwähnten bekannten Falle, mit einem Blechmantel.The best way to make this pipe is as follows: that you first make coal tar pitch liquid by heating and then with it the fillers, e.g. B. mixed with wood flour or inorganic substances, which are added in such an amount that a malleable mass is formed. These Mass is then with the help of a known pipe extruder with, suitable, expediently heated mouthpiece pressed into a pipe string. The resulting The pipe is then cooled down if necessary and finally surrounds it as in the known case mentioned at the beginning, with a sheet metal jacket.
Rohre dieser Art sind wesentlich billiger als die aus Papier gewickelten oder aus Kunststoff hergestellten Isolierrohre.Tubes of this type are much cheaper than those made of paper or insulating pipes made of plastic.
Die Verwendung von zähflüssigen bis weichen, pechartigen Rückständen der Erdäldestillation, wie von Teer und Pech, zum Imprägnieren von Dachpappe sowie zur Herstellung von Asphaltisolierplatten und anderem elektrischem Isoliermaterial ist bekannt. Auch auf denn Gebiete der Isolierrohrherstellung haben diese Rückstände und ebenso Steinkohlenteerpech schon Anwendung gefunden, jedoch nur zum Imprägnieren von aus Papier gewickelten Rohren, nicht also zur Herstellung der Rohre selbst.The use of viscous to soft, pitch-like residues Erdäldestillation, such as tar and pitch, for impregnating roofing felt and for the production of asphalt insulation panels and other electrical insulation material is known. These residues also have residues in the areas of insulating tube production and coal tar pitch has already been used, but only for impregnation from tubes wound from paper, not for the manufacture of the tubes themselves.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH7374A DE906121C (en) | 1951-08-24 | 1951-08-24 | Electrical insulating tube and method for its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH7374A DE906121C (en) | 1951-08-24 | 1951-08-24 | Electrical insulating tube and method for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
DE906121C true DE906121C (en) | 1954-03-11 |
Family
ID=7425331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH7374A Expired DE906121C (en) | 1951-08-24 | 1951-08-24 | Electrical insulating tube and method for its manufacture |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE906121C (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE532163C (en) * | 1929-03-20 | 1931-08-24 | Kaethe Kemper Geb Ruettger | Process for the production of insulating pipes with a metal jacket |
CH261487A (en) * | 1948-01-05 | 1949-05-15 | Silva Plastik Ag | Insulating tube. |
-
1951
- 1951-08-24 DE DESCH7374A patent/DE906121C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE532163C (en) * | 1929-03-20 | 1931-08-24 | Kaethe Kemper Geb Ruettger | Process for the production of insulating pipes with a metal jacket |
CH261487A (en) * | 1948-01-05 | 1949-05-15 | Silva Plastik Ag | Insulating tube. |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1475580A1 (en) | Plastic pipe and process for its manufacture | |
DE1510095C (en) | ||
DE1510095A1 (en) | Ropes made of fiberglass strands | |
US1676351A (en) | Prepared roofing and method of making | |
DE906121C (en) | Electrical insulating tube and method for its manufacture | |
DE3514879A1 (en) | METHOD FOR REDUCING WATER VAPOR DIFFUSION IN A MULTIPLE LAYER PLASTIC COMPOSITE INSULATOR | |
DE1936719A1 (en) | Mica paper | |
DE2001132A1 (en) | Composite structure in lightweight construction | |
DE2106864A1 (en) | Method and device for Her put pipes made of reinforced Duro | |
DE895272C (en) | Rolling process and machine for the production of hollow bodies from hardening building materials | |
DE578891C (en) | Insulating body | |
DE900589C (en) | Process for the production of insulating pipes | |
DE3002273C2 (en) | Process for the production of fine mica boards for electrical insulation purposes | |
DE473062C (en) | Insulated and rustproof pipe for the transfer of liquids and gases and process for its production | |
DE579535C (en) | Process for the production of insulating moldings | |
DE727872C (en) | Process for the consolidation of organic fibers | |
DE2256051C3 (en) | ||
DE562428C (en) | Process for the production of an insulating and impregnating paint | |
DE1937973A1 (en) | Winding thermosetting resin impregnated glass fibres on - plastics tubes | |
DE626454C (en) | Process for the manufacture of a synthetic material for road construction | |
AT233783B (en) | Molded piece made of plastic for connection to roofing or wall cladding formed from asbestos-cement sheets or corrugated sheets and a method for its production | |
DE666550C (en) | Flexible high frequency cable | |
DE655166C (en) | Sealing and insulating plate | |
DE764498C (en) | Molding compound for the production of homogeneous insulating parts in electrical engineering or the like. | |
DE694729C (en) | Process for the production of thermoplastic, bituminous materials |