DE6813417U - PIPE WITH RUBBER SEALED CONNECTION KIT AS A RUSH LOCK. - Google Patents

Description

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6813417 04/22/76

(see

Cases, it is advantageous to provide recesses in the rings or the segments that lead to Serve to accommodate the weld beads.

Another design according to the invention provides that the weld seam on the rings or segments on the Pull side or the pressure side is attached.

Finally, according to a further proposal of the invention, the thrust lock can be designed in such a way that Windows are provided in the socket through which an external bead can be welded to the pipe shaft.

It is known to hold the spigot end of a pipe in the socket with the help of clamps that over Friction surfaces prevent the spigot end from being pulled out. However, such a construction is only can be used at low operating pressures and is also associated with great uncertainty, since s.B. The coefficient of friction between the clamp and the pipe can change significantly due to moisture.

It is also known to proceed in such a way that holding lamellas made of steel are inserted into the rubber sealing ring, the pulling out of the spigot via a groove at the spigot should be prevented because the retaining lamellas when establishing the connection ia. engage this groove. This procedure can only be used up to Nominal widths of about 300 mm and at most for pressures up to 16 atm. can be used.

6813417 2104.76

One has already proceeded in such a way that one with help has blocked the spigot end of a pipe in the socket of self-tapping screws or interlocked with ILi If e,

...on. the tube of pressed rings held the spigot end.

All of these known embodiments are liable ', however, the disadvantage is that the connection is not

can be more angled, and there is also the fact that at high operating pressures it is to be feared that after damage the pipe still slips out at the cutting edges.

There are also known shear locks in which the spigot end of the pipes is screwed are in which a retaining ring is received, which is against the fixed in the sleeve; Counter ring supports. In order to produce such a thrust protection, a certain amount of courage must be worked into the tip end, what is expensive and, on top of that, a thickening at the tip end is needed, especially if the The ring groove is not in the unpressurized part of the spigot ..., lies.

For higher pressures, i.e. from PO atü upwards, angled socket connections by means of a ring and groove must be used secure against shear loads; The pressure test of such reveals has now shown, that the pipe under the influence of longitudinal force and transverse force in an angled position superimposed stresses learns, which lead to the fact that the annular groove as the weakest point in the tubular shaft is the starting point of fractures. It was found that, for example, a pipe with the nominal width of SOO rnm in the annular groove is not angled position already demolished at SO atü.

J--

The invention has now set itself the task of to eliminate all these disadvantages, which is achieved by the formation of an external bead according to the proposal of the above invention was achieved surprisingly. Such an outer bead can also be used, for example, for Use pipes made of ductile cast iron, because ductile cast iron is plastically and elastically deformable and due to its pestibility properties, it guarantees that even high longitudinal forces, such as those in the pressure area the ductile cast iron pipes are absorbed by the pipe material. Trials have shown that you can transmit longitudinal forces that are far above those that press in normal operations appear.

Further features of the invention emerge from the following description of exemplary embodiments in FIG Connection with the drawings and claims.

Eb show, in schematic sketches,

Figure 1 shows a pipe end with upset outer bead,

FIG. 2 shows a pipe end with an interrupted outer bead pressed out from the inside,

Figure 3 shows an outer bead of one or several weld beads are formed,

Figure 4 shows an outer bead, which by a

welded ring was formed,

characters
and 7

Figure 8

Figure ¹ J

Figure 10

a ring-shaped outer bead, the has recesses to accommodate the welding beads,

welded on rings, in which it is shown that the weld seam can be on the tension side as well as on the pressure side,

a cross section through a spigot end with sleeve, one by upsetting generated Aulienwulüt is provided,

a similar JJuruttj I lung, where the Aulienwulut through build-up welding your S |) .i. tzLüidii was produced,

a verb i rulung, both at the tip end ι. · ι η angeutaiicliLur Aulienwulst and on the Socket a gi-iji-.hweilittü external bead an-I) avenge, y ι nd nml

Figure 11 υ ιnu connection, in which in a socket 1 '' (MiBtOf be; laMütüi uind to through this to ei ii in Se it i. *: Iiiltj ciiieri Aulienwulst aui'zu ί 11 ·. Hw ν 11J ej ι.

"In Figure 1 i:; 1. cm LIp ι I, ::. EmU: of a Hoiires 1 shown with an anguiiUiuchtun Auiii-nwu "! Gt 2, while Figure 2 one as well! chi :; Pipe 1 to i ι /;! ,, bui that from the inside out an Aulienwu L:; t. '. bet'auügcjdrüclvt wiu'du, dei 'interruptions having.

6813417 04/22/76

One can have a Aufienwulat ^l \ on daa spigot end of a pipe 1 and thereby apply that u.an one or more Schwe.üJraupen on a circular line around the pipe 1 -am leads to give, if necessary, can provide regular idle or irregular interruptions (Figure 3) . The same can be achieved by pushing a ring 5 onto the spigot end of a pipe 1 and fixing it there, as shown in FIG. Ύ, with the help of welding beads 6 on both sides . Instead of a closed ring, you can also attach several segments along this circular line, with both the ring and the segments being able to be closed or slotted. Both the ring 5 and corresponding segments can have a cross-sectional shape other than the illustrated cross-sectional shape, if the retaining ring or the mating contour requires the socket.

Shown in Figure ^ iat, dull on the spigot end of a pipe 1 a li.irig on gear-1. · /. L .i.üL, which has recesses in order to attach the welding beads in these Aiuiuparungen. Here, too, a closed or ¹ closed i. L- .: Lon I ΐ Ln ι->; use, justoo appropriately designed Li (; | ';iiu; nLe. Audi for this design applies that the cross-sectional shape can be changed ^{depending on the Eri "ordej in pilots.}

In the Fi |.>; Ιη · ι · ιι L> and '/ a ti L p; ezei i'; l, dali one as Außenwulul ι. Ι new Ιίι.ΐφ, ¹ J uituj · corresponding segments on the Sp .it ^ .t: (ide a Holn-es 1 can attach, whereby it also applies to djciw Jijn ^ e or Augmente that they can be closed odor i - '; eiLJc: hI i tzt ». 11 can t: ntwedt: .r on Λν.ν zu |. *; Side (Figure 6) or

6813417 04/22/76

Λ.

on the pressure side (figure '/).

A section through a connection according to the invention For example, FIG. 8 shows where at the spigot end of a pipe 1 an outer bead produced by upsetting 2 is provided, the ü >> fi · a retaining ring is supported against a screw ring 14, which over its external thread transmits the longitudinal force to the sleeve 12 surrounding the spigot end of the pipe 1.

A similar design can be seen in FIG. 9, where an outer bead 4 attached iat, which was created by build-up welding, the retaining ring 1S, geH.eri the Bead 4 is supported, rests against a coupling ring 1G, which in turn is screwed onto a socket IV.

An embodiment where π i no is arranged both at the spigot end of the pipe 1 and on a socket 1 ^f / outer bulges is shown in iM.jrur 10. A is submerged Außenwu I ;; t, '' supports cloth on a retaining ring PY i'jtigen exerts a; rwu rf ring 18. The SchubsicheruriK on the sleeve 17 is welded over a Außenwulut 'brought \''in segment form. One can then - / .. ii. Slide on the cap ring 18 with a kind of Ba Jon tver-ach I uli and guide the search for hc-r by twisting it.

Another · Auiif refer uhrungtsfo-1-iut in the figure 11 where IIau S [ji ti'.utido einoii a pipe 1 which has been provided with windows 20 in a sleeve V) ei ^ u onchoben Iuel. Mwη liut now the opportunity to go through

-S-

. dieeae .window 20 on the spigot end of the pipe

an external rage ■: 'after one of the previous I to apply the execution forms described.

I In the drawing, Re shows that a bead 4 ¹

I along a circular line with discontinuities

1 was welded on.

6813417 2z.oi.76

Claims (8)

Protection claims 1. Shear protection for guinea-tight pipe connections, characterized in that on the tubular shaft (l), advantageously near its pointed end, and / or on the Sleeve (17) an outer bead (2,4,5,7,9) is attached. 2. Shear protection according to claim 1, characterized in that that an upset outer bead (2) is provided on the tubular shaft (l) and / or the socket. 3- thrust protection according to claim 1, characterized in that an internally pushed out, from partial pieces existing outer bead (3) is provided on the pipe shaft (l) and / or the socket. 4. Thrust safety device according to claim 1, characterized in that around the tubular shaft (l.) And / or the sleeve (17), along a circular line, at least one weld bead (4, 4 ', 4' ') is placed, possibly in regular or irregular intervals are provided for interruptions. 5. thrust protection according to claim 1, characterized in that that a ring (5,7i9) or segment pieces, closed or slotted, welded onto the tubular shaft (l) and / or the socket, the segment pieces are attached at regular or irregular intervals. 6. Shear protection according to claim 1 and 5 »characterized in that that in the ring (7) or the Sgementen Recesses are provided that serve to accommodate the welding beads (H). - 1 (5 - - IQ) - % 7. Sohubsicherung according to claim 5 and 6, characterized in that shows that the weld seam (1O ₁ Ll) to the Rings (9) or segments euf der Zugs ^ ite mlfr attached to the print side. 8. Shear protection according to claim 1 to 7 »thereby able to ' shows that in the socket (19) window (20) is are seen, through which an outer bead (4 ¹ ) can be welded to the tubular shaft (1). 6813417 22.0476