DE318640C - - Google Patents
Info
- Publication number
- DE318640C DE318640C DENDAT318640D DE318640DA DE318640C DE 318640 C DE318640 C DE 318640C DE NDAT318640 D DENDAT318640 D DE NDAT318640D DE 318640D A DE318640D A DE 318640DA DE 318640 C DE318640 C DE 318640C
- Authority
- DE
- Germany
- Prior art keywords
- flange
- connection
- screw
- expansion
- bolt
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims description 3
- 238000010411 cooking Methods 0.000 description 4
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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/24—Flanged joints characterised by the sealing means specially adapted for unequal expansion of the parts of the joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cookers (AREA)
Description
Bei Flanschverbindungen für Kochrohre, die mit einem Dampfmantel umgeben sind, ist immer schwierig zu erreichen, daß die Verbindung ganz dicht hält, weil die Bolzen die Temperatur des Dampfes annehmen, d. h. eine höhere Temperatur als das Kochrohr selbst. Dadurch dehnen sich die Bolzen aus, und die Verbindung wird undicht. Wenn man Pakkungen oder Stopfbüchsen bei der Flanschverbindung benutzt, macht sich dieser Mißstand weniger bemerkbar und man .kann eine ziemlich dichte Verbindung bei genügendem Anziehen der Schraube in kaltem Zustand erhalten. Wendet man dagegen eine Flanschverbindung ohne Packung an, so bewirkt schon eine kleine Ausdehnung der Schraubenbolzen, daß die Flanschverbindung undicht wird. Da es während des Betriebes, wenn die Bolzen heiß sind, unmöglich ist, sie noch weiter anzuziehen, so läuft man Gefahr,, daß. Dampf in das Kochrohr einströmt. ·In the case of flange connections for cooking tubes that are surrounded by a steam jacket, is always difficult to achieve that the connection holds completely tight, because the bolts the Assume the temperature of the steam, d. H. a higher temperature than the cooking tube itself. This will cause the bolts to expand and the connection to leak. If you have packages or stuffing boxes used for the flange connection, this is less noticeable and you can A fairly tight connection is obtained when the screw is tightened enough when it is cold. If, on the other hand, a flange connection without a packing is used, this causes even a small expansion of the screw bolts that the flange connection leaks will. Since it is impossible to still use them during operation when the studs are hot to continue to attract, one runs the risk of, that. Steam flows into the cooking tube. ·
Nach der Erfindung läßt sich eine dichte Verbindung, selbst wenn die Schraubenbolzen unzugänglich in einem Dampfmantel liegen, dadurch erreichen, daß als Unterlage für die Mutter oder den Kopf des Schraubenbolzens Metallhülsen verwendet werden, deren Ausdehnungskoeffizient größer als der des Bolzens ist. Man kann auf diese Weise sogar erreichen, daß.die Flanschverbindung bei der Temperatur-Steigerung fester angezogen wird, indem man nur die Länge des Unterlags Zylinders und dessen Ausdehnungskoeffizient dermaßen zu wählen hat, daß sie die Ausdehnung des Bolzens mehr als nur ausgleichen.According to the invention, a tight connection can be made, even if the screw bolts inaccessible in a steam jacket, achieve that as a base for the Nut or the head of the screw bolt metal sleeves are used, their coefficient of expansion is larger than that of the bolt. In this way you can even achieve that the flange connection when the temperature increases Tighten it more tightly by just taking the length of the backing cylinder and its The expansion coefficient has to be chosen in such a way that it increases the expansion of the bolt more than just compensate.
Die Flanschverbindung kann, wie auf der Zeichnung dargestellt, ausgeführt werden: A, A ist das Kochrohr, B, B der Flansch, welcher entweder angegossen sein oder sich lose gegen Ringe in Rillen der Oberfläche des Rohres legen kann. Das Rohr wird mit Schraubenbolzen C zusammengeschraubt, wobei die Metallzylinder D an beiden Flanschen oder nur an einem untergelegt werden.The flange connection can be carried out as shown in the drawing: A, A is the cooking tube, B, B is the flange, which can either be cast on or lie loosely against rings in grooves on the surface of the tube. The pipe is screwed together with screw bolts C , with the metal cylinders D being placed under both flanges or just one.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE318640C true DE318640C (en) |
Family
ID=571203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT318640D Active DE318640C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE318640C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1150249B (en) * | 1959-04-03 | 1963-06-12 | Basf Ag | Screw connection for flanges exposed to strong temperature changes on pipelines or apparatus |
DE1289696B (en) * | 1966-05-24 | 1969-02-20 | Mannesmann Ag | Loose flange connection for pressure pipes |
EP0010332A1 (en) * | 1978-10-25 | 1980-04-30 | GENERAL TECHNIC s.e.c.s. | Coupling element and method of making the same |
DE29722662U1 (en) * | 1997-12-22 | 1998-02-26 | Tückmantel, Hans J., Dipl.-Ing., 45472 Mülheim | Sleeve for intrinsically safe screwed flange connection |
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0
- DE DENDAT318640D patent/DE318640C/de active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1150249B (en) * | 1959-04-03 | 1963-06-12 | Basf Ag | Screw connection for flanges exposed to strong temperature changes on pipelines or apparatus |
DE1289696B (en) * | 1966-05-24 | 1969-02-20 | Mannesmann Ag | Loose flange connection for pressure pipes |
EP0010332A1 (en) * | 1978-10-25 | 1980-04-30 | GENERAL TECHNIC s.e.c.s. | Coupling element and method of making the same |
DE29722662U1 (en) * | 1997-12-22 | 1998-02-26 | Tückmantel, Hans J., Dipl.-Ing., 45472 Mülheim | Sleeve for intrinsically safe screwed flange connection |
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