DE973855C - Tightly welded pipe flange connection - Google Patents
Tightly welded pipe flange connectionInfo
- Publication number
- DE973855C DE973855C DEA19029A DEA0019029A DE973855C DE 973855 C DE973855 C DE 973855C DE A19029 A DEA19029 A DE A19029A DE A0019029 A DEA0019029 A DE A0019029A DE 973855 C DE973855 C DE 973855C
- Authority
- DE
- Germany
- Prior art keywords
- pipe flange
- flange connection
- sealing ring
- sealing
- ring
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
-
- 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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/04—Welded joints with arrangements for preventing overstressing
- F16L13/06—Welded joints with arrangements for preventing overstressing with tension relief of the weld by means of detachable members, e.g. divided tension rings, bolts in flanges
Description
Die Erfindung betrifft eine Rohrflanschverbindung mit einem Dichtring, der an seinem Innenrand mit dem einen und an seinem Außenrand mit dem anderen der zu verbindenden Rohrflansche verschweißt isf. Der hierzu verwendete Dichtring wird im allgemeinen aus Stahlblech, hergestellt. Es müßte erwartet werden, daß derartige Schweißdichtungen einen absolut dichten Abschluß der miteinander verbundenen Flansche gewährleisten. Es hatThe invention relates to a pipe flange connection with a sealing ring on its inner edge with one and at its outer edge with the other of the pipe flanges to be connected welded isf. The sealing ring used for this is generally made of sheet steel. It it would have to be expected that such welding seals provide an absolutely tight seal between the connected flanges. It has
ίο sich jedoch herausgestellt, daß Schweißdichtungen sehr leicht undicht werden, sobald die miteinander verbundenen Teile unter größerem Druck stehen und hohen Temperaturen ausgesetzt sind. Bei solchen Betriebsverhältnissen werden die Schweißnähte durch auftretende Risse undicht. Das Reißen der Schweißnähte ist vor allem auf die in radiale Richtung des Dichtringes wirkenden, durch unterschiedliche Wärmedehnung der einzelnen Bauteile bedingte Wärmespannungen sowie auf Biegebeanspruchungen an den Schweißnähten zurückzuführen. Zur Vermeidung der Rißbildung an den Dichtschweißnähten wird gemäß der Erfindung der Dichtungsring an seinen beiden Stirnseiten mit so tiefen und gegeneinander versetzten Ringnuten versehen, daß der Querschnitt des Ringes Mäanderform aufweist. Durch diese Ausbildung des Dichtringes wird er allseitig, jedoch besonders in radialer Richtung, harmonikaart'ig elastisch dehnungsfähig, so daß in ihm keine zu hohen, die Dichtschweißnähte in ungünstigem Sinne beeinflussenden Spannungen mehr auftreten können.ίο it turned out, however, that weld seals leak very easily as soon as the parts connected to one another are under greater pressure and are exposed to high temperatures. In such operating conditions, the weld seams leaking due to cracks. The tearing of the welds is mainly due to the radial ones Direction of the sealing ring acting through different thermal expansion of the individual components due to thermal stresses as well as bending stresses on the weld seams. In order to avoid the formation of cracks on the sealing weld seams, the sealing ring is made according to the invention Provided on both of its front sides with ring grooves that are so deep and offset from one another, that the cross section of the ring has a meander shape. Through this training of the sealing ring it becomes elastically extensible on all sides, but especially in the radial direction, like a harmonica, so that there are no excessive tensions in it that would influence the sealing weld seams in an unfavorable sense more can occur.
Es sind bereits Metalldichtungen für Flanschverbindungen bekannt, die auf beiden Stirnseiten versetzt angeordnete Ringnuten besitzen. Bei diesen Dichtungen sollen die Ringnuten die Dichtung in Richtung ihrer Stirnfläche druckelastisch machen, damit sich die Stirnflächen gut an den Gegenflächen der abzudichtenden Flansche anschmiegen können. Für Schweißdichtungen wurden derartig ausgebildet'e Dichtungen jedoch noch nicht vorgeschlagen. In weiterer Ausbildung der Erfindung werden die Ringnuten so angeordnet, daß ihre Seitenwände in bekannter Weise einen spitzen Winkel zur Dichtungsebene bilden. Dadurch wird erreicht, daß sich der Ring etwa vorhandenen Unebenheiten auf den Dichtflächen besser anschmiegen kann und dadurch eine Entlastung der Schweißnaht erreicht' wird. Zur Erhöhung dieses Effektes können die Ringnuten zusätzlich mit einem geeigneten Dichtmittel, z. B. Graphit, angefüllt werden.There are already metal seals for flange connections known, which have annular grooves arranged offset on both end faces. With these Seals, the annular grooves should make the seal pressure-elastic in the direction of its end face, so that the end faces can nestle against the mating surfaces of the flanges to be sealed. However, seals designed in this way have not yet been proposed for welding seals. In a further embodiment of the invention, the annular grooves are arranged so that their side walls Form an acute angle to the sealing plane in a known manner. This achieves that the ring can cling to any unevenness on the sealing surfaces better and thereby a relief of the weld seam is achieved '. To increase this effect, the Ring grooves additionally with a suitable sealant, e.g. B. graphite are filled.
Ein weiteres Merkmal der Erfindung besteht darin, daß an der Dichtungsleiste desjenigen Rohrflansches, welcher mit dem Außenrand des Dichtringes verschweißt ist, unmittelbar hinter der Schweißnaht in ebenfalls bekannter Weise eine Ringnut angeordnet ist'. Dadurch wird auf jeden Fall eine absolut dichte Verschweißung zwischen Flansch und Dichtring erzielt und die Möglichkeit geschaffen, bei einer notwendigen Demontage die Schweißnaht leicht zu entfernen.Another feature of the invention is that on the sealing strip of the one Pipe flange, which is welded to the outer edge of the sealing ring, immediately behind the An annular groove is arranged in a likewise known manner. This will affect everyone If an absolutely tight weld between flange and sealing ring is achieved and the possibility created to easily remove the weld seam when dismantling is necessary.
In der Zeichnung ist ein Schnitt durch die Symmetrieebene eines Armaturengehäuses gezeigt, das eine erfindungsgemäß ausgebildete Schweißdichtung besitzt. Am Deckelflansch 2 ist der Dichtungsring 3, welcher mit den Nuten 4 versehen ist, mittels der Schweißnaht S befestigt. Der Gehäuseflansch ι ist mit der Entlastungskerbe 6 versehen und ist durch die Schweißnaht 7 mit dem Dichtungsring 3 verbunden. Durch die beiden Schweißnähte ist das Armaturengehäuse dicht abgeschlossen. Durch die Stiftschrauben 8 wird eine feste Verbindung der Flanschteile hergestellt.In the drawing is a section through the plane of symmetry of a fitting housing is shown which has a welded seal designed according to the invention owns. On the cover flange 2, the sealing ring 3, which is provided with the grooves 4, is by means the weld S attached. The housing flange is provided with the relief notch 6 and is connected to the sealing ring 3 by the weld seam 7. Through the two welds the valve housing is tightly sealed. Through the studs 8 is a Fixed connection of the flange parts made.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA19029A DE973855C (en) | 1953-10-24 | 1953-10-24 | Tightly welded pipe flange connection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA19029A DE973855C (en) | 1953-10-24 | 1953-10-24 | Tightly welded pipe flange connection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE973855C true DE973855C (en) | 1960-06-30 |
Family
ID=6924334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA19029A Expired DE973855C (en) | 1953-10-24 | 1953-10-24 | Tightly welded pipe flange connection |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE973855C (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1816293A (en) * | 1925-09-30 | 1931-07-28 | William F Oberhuber | Method of making high pressure steam joints |
DE563738C (en) * | 1930-09-10 | 1932-11-09 | Karl Roeder Dr Ing | Resilient flange seal |
GB386014A (en) * | 1931-07-20 | 1933-01-12 | Richard William Bailey | Improvements in or relating to joints for pipes and other metal receptacles |
FR754457A (en) * | 1933-04-18 | 1933-11-08 | Ig Farbenindustrie Ag | Welding connection for pressure-tight vessels and thick-walled pipes |
DE706551C (en) * | 1937-10-08 | 1941-05-29 | Otto Dalldorf | Metallic seal with U-shaped cross-section for pipelines subject to changing pressures and temperatures |
DE921120C (en) * | 1951-01-24 | 1954-12-09 | Basf Ag | Detachable seal insensitive to thermal expansion, pressure fluctuations as well as axial and radial forces |
DE921841C (en) * | 1951-12-25 | 1954-12-30 | Basf Ag | Detachable seal |
-
1953
- 1953-10-24 DE DEA19029A patent/DE973855C/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1816293A (en) * | 1925-09-30 | 1931-07-28 | William F Oberhuber | Method of making high pressure steam joints |
DE563738C (en) * | 1930-09-10 | 1932-11-09 | Karl Roeder Dr Ing | Resilient flange seal |
GB386014A (en) * | 1931-07-20 | 1933-01-12 | Richard William Bailey | Improvements in or relating to joints for pipes and other metal receptacles |
FR754457A (en) * | 1933-04-18 | 1933-11-08 | Ig Farbenindustrie Ag | Welding connection for pressure-tight vessels and thick-walled pipes |
DE706551C (en) * | 1937-10-08 | 1941-05-29 | Otto Dalldorf | Metallic seal with U-shaped cross-section for pipelines subject to changing pressures and temperatures |
DE921120C (en) * | 1951-01-24 | 1954-12-09 | Basf Ag | Detachable seal insensitive to thermal expansion, pressure fluctuations as well as axial and radial forces |
DE921841C (en) * | 1951-12-25 | 1954-12-30 | Basf Ag | Detachable seal |
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