DE9402263U1 - Multi-layer fabric compensator, especially for high medium temperatures, for attachment by means of flanges, using metal foils - Google Patents

Description

Page 2, .... .German Patent Office / letter dated Io.o2.i9?4

DESCRIPTION

Multi-layer fabric compensator especially for high medium temperatures, for fastening by means of flanges, using metal foils.

State of the art:

Conventional multi-layer fabric expansion joints consist, depending on the medium temperature, of several insulating fabrics and usually Teflon films or other plastic or elastomer films as sealing elements.

Due to the limited temperature resistance of these sealing foils, the use of such compensators is subject to considerable limits in terms of the medium temperature, i.e. also the resulting flange temperatures. (Flange temperatures of approx. 3oo-4oo°C) When using metal foils, this temperature limit can be raised as desired, but the permanent movement of such capacitors is so limited with conventional types of use and processing that this advantage is negated and the compensator cannot be used for large movements.

Previous types of use and processing inevitably lead to undefined creasing of these films when the compensator moves, so that repeated movements lead to the film breaking at precisely these creasing points, thus rendering the compensator unsuitable.

Problem:

The invention specified in claim 1 is based on the problem of creating a compensator that has a large range of movement with low restoring forces, similar to a fabric compensator, consists exclusively of materials that have a temperature resistance of more than 5oo°C-6oo*c, and can be used in a flanged design.

Solution:

This problem is solved with the features listed in claim 1.

tffir Society for Geuebekoiopensatoren BbH **« ßirkenstr. 17 *«« D-','5503 Husiaeltal

Telephone/Fax 0?26*VJ708 .**. .**. ·'*; _: "**"

Re?ister?ericht Bayreuth fiRfl; f?|S · i*\·' EkisJiVsti/jihrer: Hans-Dieter Fichtel

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Page 3,.... German Patent Office / letter dated 1ö,o2.1994

Benefits achieved:

The invention makes it possible to produce a compensator for high temperatures that combines the advantages of a multi-layer fabric compensator (high mobility with negligible restoring forces and relatively short overall lengths) with the advantages of a steel compensator (high temperature resistance even with a flanged design). This makes installation much easier without using large quantities of insulating materials, which also makes recycling much easier.

further design:

An advantageous embodiment of the invention is specified in claim 2.

The further development according to claim 2 enables the necessary internal and external stiffening elements to be designed in such a way that they can be integrated into the compensator and welded, and thus a complete installation unit can be manufactured, whereby separate flow baffles and clamping flanges can be dispensed with.

SfirSociety for Seascapes isbH '*'** Birkenstr. I7 *'** D-95503 Husseltal

Telephone/Fax 092Q1/.17U8 .. _# .. _{t &lgr;} ·· _% ;

Retfistertfericht Bayreuth ty$ *1&Lgr;42: ?<*V "seUnS/tsftihrer: Hans-Dieter Fichbel

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Page 4 German Patent Office / Letter dated 1o.q2.1994

Description of an example:

An embodiment of the invention is given with reference to Figures 1 to 3. They show

- Figure 1 shows the compensator in the installed, non-moving

Condition

- Figure 2 the compensator in the operating state

- Figure 3 the individual layers selected in the example

In Figure 1, the compensator^ 1 ) was shown in the installed state, i.e. in the cold, non-moving state. The inner stiffening elements < 2 + 3 > were necessary both in the cylindrical areas ( 2 5 after the fastening flanges, and in the actual bellows area ( 3 ). The outer stiffening elements ( 4 ), on the other hand, are only used in the cylindrical area, since in the bellows area on the outside the stainless steel mesh used is used to stabilize the shape.

In Figure 2, the compensator is shown in its operating state, i.e. in the hot, moving state. The areas in which the actual movement takes place (in the flanks of the special bulge) and also the areas of the compensator which, due to their special stiffening, must not be able to absorb any movement are clearly visible.

In Figure 3, the layer structure chosen in the example is outlined from the inside out, which is composed as follows, but can also be changed significantly depending on the application:

5 - 1 layer of stainless steel mesh

S - 1 layer of high temperature insulating fabric

7 - 1 layer of stainless steel foil

8 - 1 layer of high temperature insulation fabric

9 - &igr; Location Ede1s tah1f&ogr;1i e

10- 1 layer of high temperature insulation fabric

11- 1 layer of stainless steel mesh

ÖTtf-üesellschaft für Gewebekoiupensatoren mbH *** ßirkenstr. 17 *'*'* D-95503 Huraseltal

Phone/Fax 09201/1703

Rö?ister-?erichi: Bayreuth &lgr;&EEacgr;&Kgr;§ 19gS·, .«««.&bull;&bull;jteschiffesführer: Hans-Dieter Fichte!

Claims (2)

Page 1 German Patent Office / Letter dated 10.02.1994 PROTECTION CLAIMS 1. Multi-layer fabric compensator, especially for high medium temperatures, for fastening by means of flanges, using metal foils, whereby the stainless steel foils are shaped in such a way that a movement of the compensator does not result in the foil wrinkling, but rather the movement is compensated in a defined way the formed stainless steel foil is stiffened inside and outside by means of stiffening elements in the places where no movement is to take place, i.e. where uncontrolled creasing is to be avoided, so that no deformation occurs there. 2. Multi-layer fabric compensator according to claim 1 - in which the stiffening elements are incorporated into or onto the compensator in such a way that no additional and separate flow baffles or steel clamping flanges are required. ffftf-Society for Seabecoiapensators rabH *** Birkenstr. 17 «'«« D-95503 Huiaseltal Telafon/Telafax Q9Sflt'1703". .*·..*%." "" fie?isterierichfc Bayreuth .'&iacgr;&EEgr;^&phgr;&phgr; · V* .ifeichSftstf'ihrer- Hans-Dieter Fichtal