DE7313234U - Ring seal for tubes in tube sheets, especially for heat exchangers - Google Patents

Description

Patent attorney Dipl.-Ing. H. Wangemann

Dresdner Hank, DOueldorf, account Sl -419 6SS PoitJdieck account, Cologne 168812

4 Düsseldorf, the

StreumannirraB 28 Call 36 35 31

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hf = nif ° in "Rlngdicht.unp: for Rohrp in fijr ^w Hrmet? n.ischer, with parallplen, an - un + · ⁰ T ρ ^ i ⁺ . ^ <^ pR Rohrbo ^^ ns am I.; 0ehrend

vr \ 6 a <=> m rlips

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cb »i τ ö _n crnnfrs ^ rid ^a runp · Her pipes, especially in heat-ι chen. For these are Rinp; <iichtunffen in the form of. These Dichtunsren are with parallel, an rrb <=; r- iin ^ - untet-p ^ it ⁰ Ho <5 RohrboHens gm T.och ^ and

■ Ποτ- No-no-rvvnr- ι ·? _Ο (τ + di ^ The task is to create a ring sealj H ^ e a ^ spitp the tolerances of the tube sheet thickness sn '-' i ° ^ «r To" ¹ ° r ? Ti7 _J pn γΌτ · Rohr ° nnn Hen Tolerances of the holes in the tube sheet Pp ^-1 Td ^ +. Account tr ^ "^ t and nev sealing pressure without suffix + .e] len from you ^ unprstpilen is possible.

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To solve this problem see. the innovation is a ring seal of the type mentioned, which consists of an elastic resilient material, the ring-shaped web in cross-section is arched or roof-shaped to the outside! is arched and. his two Form the edges of narrow, annular bearing surfaces on the pipe.

In a preferred embodiment of the innovation, the flanges taper in cross section towards their outer edge, i. E. their resilient property increases from their foot portion on the web towards their outer edge.

The outer edge of the flanges is preferably provided with annular lugs forming sealing surfaces facing one another provided, the iläehemnäßig and. sealing to the lower and = upper = side of the tube sheet lie against the edge of the hole.

In a further development of the innovation, one of the both web edges one or two sealing surfaces forming beads, the second web edge a curved or the like. Contact edge. At height the web edge resilient in cross-section V-shaped inserts can be provided, the legs in the web and in the Flanges protrude.

Even with very different tolerances of the holes in the tube sheet or the tubes, the arched web can according to the innovation ring seal more or less strongly pushed through be, i.e. stretched, whereby a secure fit of the flanges on the edge of the hole in the tube sheet on the one hand and a sealing engagement of at least one edge of the

arched Steffis on the tube is guaranteed, so the desired sealing pressure of the parts mentioned can be achieved by choosing a seal corresponding to the web diameter F ^ <= r.

In the drawing, which shows further features of the innovation in connection with the description below, are in the Fig. 1 and? Embodiments of the ring seal according to the innovation shown in cross section of a pipe half.

In the bore 1 of the tube sheet 2, which is provided with a coating 3 in the example shown, the tube 4 is to be held in a sealing manner. For this purpose, the one on the outside of the tube 5 as well as the bottom 6 and the top 7 of the tube sheet on the edge of the hole 8 and. 9 adjacent seal 10.

This is made of an elastically resilient material, i.e. made of suitable plastic, for example, and has a web 11 which is directed outwards in cross section, i.e. against the borehole wall 12 or the coating applied there is.

The two ring-shaped edges of the arched web 11 are preferably designed differently and that carries the an edge in cross section a curved or the like. Contact edge on the outside of the pipe 5, while the second edge of the arched Web 11 has two beads 15a, 15b forming sealing surfaces I4a, i4b

From the edges of the web; II extend outward annular flanges 16, 17 which show an outwardly directed taper in cross section. The outer end of the

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Flanges 16, 17 are provided with annular projections 18, 19 which are directed towards one another and form sealing surfaces.

A pressure in the direction of arrow S is exerted on the arched web by the borehole wall 12 or its covering 3 », the due to its resilient deformability with its two edges facing opposite sides on the outside of the pipe 5 evades or if the tube is designed with a bead ¥ to one side, in the example shown to the left, evades.

However, the pressure on the web 11 also causes the flanges 16, 17 printed against each other and thereby the sealing pressure between the lugs 18, 19 and the top and bottom 6, 7 of the tube sheet enlarged. It is thus not only possible to compensate for the hole tolerances as desired, but one is also in the Location, by choosing an appropriate sealing ring Increase sealing pressure between the edges of the gasket and the pipe and the flanges 16, 17 and the pipe sheet.

If you want to increase the effect of pressing the flanges 16.17 or their approaches 18,19 against the bottom 2, you can use the seal provided with stiffening inserts 20, which when pressing the web 11 in the direction of arrow S, the pressing of the flanges 16.17 against the tube sheet 2 is reinforced.

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n ^ oh fig.? i? td ° r Ste ° "11 with an outwardly directed roof-shaped cross section ^σα η Μιςν'ϊ] bun ⁰ " v ° r ^e; ^ h ^o n, <ii ^β '' ie A.br?chn5tt° "Hp ₁ 11b arise i'octj Πιο τ γι γΊ => margins ^ p ¹ " D ^ chtun? ^o .u ?? l ^a .uf en. Ttü iJbritr ic + ri τ p ÄijRbil.'itTP. ' ¹ "^ 1 ° O-1 r>5" J ^ o vie in Fi "", 1.

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731323 ^ -5.7.73

Claims (1)

Ring seal for tubes in the tube plate, in particular for heat exchangers with parallel at the Bodenober- and - bottom ä ° s tubesheet the Loehrend directly or indi.rev-t-, adjacent flanges and these connecting annular ridge, characterized in that daft the ring seal ( 10) au? consists of an elastic "resilient. material, the" ring-shaped web (11) is arched or roof-shaped outward in the cross-section and its two edges form narrow ring-shaped contact surfaces (1?, 1 ^). Ring seal according to Claim 1, characterized in that that the worse ran ^ flpr flanges (1 ^, 17) with each other directed ■ non-flat forming ring-shaped approaches (IR, 19) is provided. . Riner seal according to claim 1 and 2, characterized in that one of the two web edges, one or two sealing surfaces (1A) forming beads (15), OCE second web edge has a curved or the like. Has contact edge (1?). . Ring seal according to claim 1 ^, characterized 'anzeichnet that resilient at the height of the web edges deposits (? ·' Gel ")) are disposed, the legs of which protrude into the web (11) and jr). The flanges (16,17). ■ 5. Ring seal according to claim 1 and * with two beads on one web edge, characterized in that the beads have different O5 ⁰ inside diameter. τπρςσο ^ (^ ³ J ρΊ * =: Ηργ ¹ ηγη ^ \ Ω -> ^ ο ^ΤΓ ι ·) ~ Ις-ί- ί