CH374254A - Screw connection with union nut for connecting a metal pipe with a glass pipe - Google Patents
Screw connection with union nut for connecting a metal pipe with a glass pipeInfo
- Publication number
- CH374254A CH374254A CH8191559A CH8191559A CH374254A CH 374254 A CH374254 A CH 374254A CH 8191559 A CH8191559 A CH 8191559A CH 8191559 A CH8191559 A CH 8191559A CH 374254 A CH374254 A CH 374254A
- Authority
- CH
- Switzerland
- Prior art keywords
- pipe
- screw connection
- union nut
- glass
- collar
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims description 19
- 239000002184 metal Substances 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 244000059549 Borneo rubber Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L49/00—Connecting arrangements, e.g. joints, specially adapted for pipes of brittle material, e.g. glass, earthenware
- F16L49/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. swivel nut, screwed on, or into, one of the joint parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0237—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member specially adapted for use with attachments, e.g. reduction units, T-pieces, bends or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Description
Schraubenverbindung mit Überwurfmutter zur Verbindung eines Metallrohres mit einem Glasrohr Bei physikalischen und chemischen Apparaten und Einrichtungen kommt es oft vor, dass ein Metall rohr mit einem Glasrohr zu verbinden ist. In be kannter Weise erfolgen solche Verbindungen als Schlauchverbindungen, indem ein Stück elastischer Schlauch, z. B. Gummischlauch, über das Ende des Metallrohres und das Ende des Glasrohres geschoben wird. Für Druck- oder Vakuumleitungen und Tem peraturen des in der Leitung enthaltenen Mediums von einigen hundert Grad Celsius versagen solche Schlauchverbindungen.
Die Erfindung betrifft eine Schraubenverbindung mit überwurfmutter zur Verbindung eines Metall rohres mit einem Glasrohr, die dadurch gekennzeich net ist, dass das Metallrohr am zu verbindenden Ende an der Innenwand eine zylindrische Ausnehmung und das Glasrohr an der Aussenwand einen zylindrischen, in die genannte Ausnehmung passenden Bund auf weist, der unter Zwischenlegung eines Dichtungsringes unter der überwurfmutter gefangen ist.
Ein Ausführungsbeispiel der Erfindung wird an hand der Zeichnung näher erläutert. Die Zeichnung zeigt eine Schraubenverbindung mit einer überwurf- mutter zur Verbindung eines Metallrohres mit einem Glasrohr in einem Axialschnitt.
Am Ende eines Metallrohres<B>1</B> ist ein Aussen gewinde 2 und eine zylindrische Ausnehmung <B>3</B> vor gesehen, die mit einer zur Rohrachse normalen Stirn fläche 4 abschliesst. Am freien Ende hat die Ausneh- mung <B>3</B> eine konische Erweiterung<B>5.</B> Ein mit dem Metallrohr<B>1</B> zu verbindendes Glasrohr weist am Ende einen in die Ausnehmung <B>3</B> passenden Bund<B>6</B> auf. Dieser Bund<B>6</B> weist in seiner halben Länge eine Ringnut<B>7</B> auf, in welche ein Dichtungsring<B>8</B> ein gelegt ist.
Die konische Erweiterung<B>5</B> ist dazu vor gesehen, dass beim Einschieben des Glasrohrbundes <B>6</B> in die Ausnehmung <B>3</B> der Dichtungsring<B>8</B> in die Ausnehmung <B>3</B> gleiten kann, ohne an einer scharfen Kante zu scheuem.
Auf das Aussengewinde 2 des Metallrohres<B>1</B> ist eine überwurfmutter <B>9</B> geschraubt, deren Schulter<B>10</B> den Glasrohrbund <B>6</B> bis auf wenig Spiel zum Glas- rohrdurchmesser hintergreift. Zwischen der Schulter des Glasrohrbundes <B>6</B> und der Schulter<B>10</B> der über- wurfmutter <B>9</B> ist ein Dichtungsring<B>11</B> eingelegt, der beim Anziehen der überwurfmutter zwischen das Glasrohr und das Metallrohr gepresst wird.
In dieser Anordnung ist die Rohrverbindung für Leitungen mit einem Druckmedium vorgesehen.
Soll die Rohrverbindung für eine Vakuumleitung vorgesehen werden, so wird der Dichtungsring<B>11</B> nicht wie in der Zeichnung gezeigt, sondern zwischen die Stirnfläche des Glasrohrbundes <B>6</B> und die Stirn fläche 4 des Metallrohres<B>1</B> eingelegt.
Die Erfindung gestattet, Dichtungsringe zu ver wenden, die hohe Temperaturen aushalten. Die be schriebene Rohrverbindung kann für hohe Drücke gebaut werden, indem keine Schwierigkeit besteht, in der Rohrverbindung eine Druckfestigkeit zu errei chen, die gleich oder grösser ist als diejenige der zu verbindenden Rohre.
Screw connection with union nut for connecting a metal pipe to a glass pipe In physical and chemical apparatus and facilities it often happens that a metal pipe has to be connected to a glass pipe. In known manner, such connections are made as hose connections by a piece of elastic hose, for. B. rubber hose, is pushed over the end of the metal tube and the end of the glass tube. Such hose connections fail for pressure or vacuum lines and tem peratures of the medium contained in the line of a few hundred degrees Celsius.
The invention relates to a screw connection with a union nut for connecting a metal pipe to a glass pipe, which is characterized in that the metal pipe at the end to be connected has a cylindrical recess on the inner wall and the glass pipe on the outer wall has a cylindrical collar that fits into said recess has, which is caught with the interposition of a sealing ring under the union nut.
An embodiment of the invention is explained in more detail with reference to the drawing. The drawing shows a screw connection with a union nut for connecting a metal pipe to a glass pipe in an axial section.
At the end of a metal tube 1, an external thread 2 and a cylindrical recess 3 are seen, which ends with an end face 4 normal to the tube axis. At the free end, the recess <B> 3 </B> has a conical widening <B> 5. </B> A glass tube to be connected to the metal tube <B> 1 </B> has one in the recess at the end <B> 3 </B> matching waistband <B> 6 </B>. Half of its length this collar <B> 6 </B> has an annular groove <B> 7 </B> into which a sealing ring <B> 8 </B> is placed.
The conical widening <B> 5 </B> is intended to ensure that when the glass tube collar <B> 6 </B> is pushed into the recess <B> 3 </B> the sealing ring <B> 8 </B> can slide into the recess <B> 3 </B> without rubbing against a sharp edge.
A union nut <B> 9 </B> is screwed onto the external thread 2 of the metal tube <B> 1 </B>, the shoulder <B> 10 </B> of which the glass tube collar <B> 6 </B> except for a little There is play behind the glass tube diameter. A sealing ring <B> 11 </B> is inserted between the shoulder of the glass tube collar <B> 6 </B> and the shoulder <B> 10 </B> of the union nut <B> 9 </B> when tightening the union nut is pressed between the glass tube and the metal tube.
In this arrangement, the pipe connection is provided for lines with a pressure medium.
If the pipe connection is intended for a vacuum line, the sealing ring <B> 11 </B> is not as shown in the drawing, but between the end face of the glass pipe collar <B> 6 </B> and the end face 4 of the metal pipe < B> 1 </B> inserted.
The invention allows sealing rings to be used that can withstand high temperatures. The pipe connection described can be built for high pressures by having no difficulty in achieving a compressive strength in the pipe connection that is equal to or greater than that of the pipes to be connected.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH8191559A CH374254A (en) | 1959-12-17 | 1959-12-17 | Screw connection with union nut for connecting a metal pipe with a glass pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH8191559A CH374254A (en) | 1959-12-17 | 1959-12-17 | Screw connection with union nut for connecting a metal pipe with a glass pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
CH374254A true CH374254A (en) | 1963-12-31 |
Family
ID=4539248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH8191559A CH374254A (en) | 1959-12-17 | 1959-12-17 | Screw connection with union nut for connecting a metal pipe with a glass pipe |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH374254A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328155A1 (en) * | 1975-10-17 | 1977-05-13 | Polva Nederland Bv | TENSILE TENSILE FITTING FOR USE BETWEEN A SYNTHETIC TUBE AND A METAL TUBE |
DE19723684A1 (en) * | 1997-06-05 | 1998-12-10 | Conducta Endress & Hauser | Liquid-tight connector |
WO2000028246A1 (en) * | 1998-11-10 | 2000-05-18 | Watts Investment Company | Valve assemblies |
US7195288B2 (en) * | 1997-03-28 | 2007-03-27 | Karl Weinhold | Pipe coupling |
CN113187795A (en) * | 2021-05-31 | 2021-07-30 | 中航电测仪器股份有限公司 | Lockwire nut component |
-
1959
- 1959-12-17 CH CH8191559A patent/CH374254A/en unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328155A1 (en) * | 1975-10-17 | 1977-05-13 | Polva Nederland Bv | TENSILE TENSILE FITTING FOR USE BETWEEN A SYNTHETIC TUBE AND A METAL TUBE |
US7195288B2 (en) * | 1997-03-28 | 2007-03-27 | Karl Weinhold | Pipe coupling |
DE19723684A1 (en) * | 1997-06-05 | 1998-12-10 | Conducta Endress & Hauser | Liquid-tight connector |
US5971786A (en) * | 1997-06-05 | 1999-10-26 | Endress + Hauser Conducta Gesellschaft fur Mess- und Regeltechnik mbH & Co. | Liquid-proof plug connector |
WO2000028246A1 (en) * | 1998-11-10 | 2000-05-18 | Watts Investment Company | Valve assemblies |
US6505813B1 (en) | 1998-11-10 | 2003-01-14 | Watts Investment Company | Valve assemblies |
CN113187795A (en) * | 2021-05-31 | 2021-07-30 | 中航电测仪器股份有限公司 | Lockwire nut component |
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