DE29906645U1 - Feedthrough device for sealingly carrying out at least one power through a wall or the like. trained breakthrough - Google Patents

Description

DOYMA GmbH & Co, Industriestr. 43-57, 28876 Oyten

Feedthrough device for the sealed passage of at least one line through an opening formed in a wall or the like

The present invention relates to a feedthrough device for the sealed passage of at least one line through an opening formed in a wall or the like, in particular for the gas- and liquid-tight passage of cables, with at least one deformable sealing element that can be placed between an inner surface of the opening and an outer surface of the line, a clamping device for clamping and sealingly pressing the sealing body and with at least one sleeve tube that accommodates the line to be passed through.

Such feedthrough devices are known and are used, for example, to introduce gas or water pipes or cables into buildings; they are sometimes referred to as house feedthrough combinations when several pipes are combined and sealed through openings in the walls or floor slabs of buildings. Such feedthrough devices must meet high requirements in terms of sealing so that moisture and in particular gas cannot penetrate from one side of the wall or floor slab through the opening to the other side. In particular, gas must be prevented from penetrating the interior of a building in the event of a gas pipe leak.

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The requirement for the cables to be routed through to be replaceable is met by feedthrough devices with a sleeve pipe (or empty pipe). In such feedthrough devices with an empty pipe to accommodate a cable or line, the cable or line extends, for example, from the feedthrough device, in which it is routed through in a sealed manner, through the ground outside the building to a supply or connection station. The cable or supply line is located inside the sleeve pipe. If the cable or supply line needs to be replaced, it can be easily removed and pulled through the sleeve pipe and replaced with a new cable or supply line without the need for digging work in the ground outside the building.

When installed, large tensile forces can be applied to the cables or sleeve pipe that are routed through them, which are then transferred to the feedthrough device. Extreme tensile forces can occur, for example, if an excavator hits a cable or sleeve pipe with its shovel while working in the ground near the building and pulls it with extreme force. Such tensile forces can cause damage and leaks in the cables and damage to the feedthrough device outside the building. If gas escapes from a cable, it must be prevented that it flows through the feedthrough device arranged in the opening into the interior of the building, where it could cause poisoning or explosions. If cables are routed through the feedthrough device, if large tensile forces occur, they can be pulled axially through the feedthrough device in such a way that connection fittings inside the building, for example in a house connection room, are damaged and a cable exerts large transverse forces on the feedthrough device. To absorb such transverse forces, it is known in some feedthrough devices to use a funnel- or trumpet-shaped
It is advisable to provide an internally expanding support ring, which can also be referred to as a support ring element, which, due to its shape, prevents damage to the cable as the cable rests against the support ring element over a larger area.

The object of the present invention is to provide a feedthrough device of the type mentioned at the outset, which ensures reliable sealing when large tensile forces occur on a line or cable or sleeve pipe.

The invention solves this problem in a feedthrough device of the type mentioned at the outset in that the sleeve tube has at least one projection and/or one recess which is in a positive connection with the clamping device and/or the sealing element in the assembled state.

The positive connection between the sleeve tube and the clamping device and/or the sealing element, which is achieved by means of a projection provided on the sleeve tube (or empty tube) or a recess formed there, allows the absorption and transmission of large axial forces from the sleeve tube to the feedthrough device without the sleeve tube being pulled through the feedthrough device or being torn out of it. This can prevent axial movement or pulling through of a cable or line passed through the sleeve tube and the feedthrough device. As a result, damage to the lines or connection fittings coupled to the cable or line can also be avoided. In addition, the sealing effect of the feedthrough device according to the invention is maintained, so that the penetration of gas or moisture through the breakthrough into the interior of a building is prevented. In particular, the entry of gas into a building is largely excluded as a result.

The invention solves the problem with a feedthrough device with
a support ring element which is arranged on a lateral end section of the feedthrough device and widens in the shape of a trumpet on the inside for supporting a line, the clamping device having two dimensionally stable clamping plates between which the deformable sealing element is arranged and which can be clamped by means of at least one clamping bolt, further in that the support ring element which widens in the shape of a trumpet is arranged on one of the clamping plates of the clamping device.

By arranging the funnel- or trumpet-shaped widening support ring element on one of the clamping plates of the clamping device, large transverse forces can be absorbed by the support ring element and transferred to a clamping plate. These forces can then be transferred from the clamping plate to a wall or a base plate. Damage to the cable can also be safely prevented if the cable slides along the support ring element due to extreme forces. In addition, the flat force transfer from a cable to the feedthrough device ensures that the sealing effect

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the feedthrough device is retained.

In a preferred embodiment of the invention it is provided that
the trumpet- or funnel-shaped expanding support ring element is attached to a clamping plate by means of several clamping bolts. In this way, the support ring element is firmly secured to the clamping plate to absorb even extreme forces without the need for additional fastening means, because the clamping bolts simultaneously serve to brace and press the sealing body of the device.

According to a further development of the previously described embodiment, it is provided that the trumpet-shaped widening support ring element is formed integrally with a clamping plate, since this enables simple production, for example by casting or forging.

In an alternative, advantageous embodiment of the feedthrough device according to the invention, it is proposed that the projection arranged on the sleeve tube extends radially outwards in a substantially flange-like manner. Such a projection, preferably completely encircling the sleeve tube in the manner of a flange, can be attached to the sleeve tube in a simple manner; it is designed to absorb large forces and can be easily brought into positive engagement with a section of the clamping device and/or a sealing element. The projection is expediently arranged on an end section of the sleeve tube.

A particularly preferred embodiment is characterized in that the projection rests against the deformable sealing body with a front end surface and is pressed against the deformable sealing element by means of a clamping plate of the clamping device. The flange-like projection is "embedded" between a clamping plate and the sealing element and is on the one hand in a positive connection with the clamping plate to absorb large forces and on the other hand in sealing surface contact with the sealing element, so that a gas- and moisture-tight barrier is realized.

According to a further development, it is provided that the flange-like projection is arranged in a recess formed on the clamping plate in the assembled state, so that the front surface of the flange-like projection is aligned with the front surface of the clamping plate and thus the projection and the clamping plate are at a

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Sealing element comes into contact with the system.

A further preferred embodiment is characterized in that two deformable sealing elements arranged at a distance from one another are provided, that an essentially dimensionally stable intermediate plate is arranged between the two deformable sealing elements and that the projection of the sleeve tube engages positively with the intermediate plate. In this way, tensile or compressive forces are initially transferred from the sleeve tube to the intermediate plate and, if necessary, a deformable sealing element and are initially released from the intermediate plate to an elastic, deformable sealing element, which ensures a certain degree of damping, so that any essentially axial movement of the sleeve tube that may occur is buffered by an elastic sealing element. This counteracts the risk of damage to the feedthrough device and the sleeve tube as well as to a line.

According to a further development of the previously described embodiment, the projection is arranged in a recess formed on the intermediate plate in the assembled state. The flange-like projection is aligned with the intermediate plate and is in sealing contact with a sealing element.

It is also preferred that a clamping plate is of such a size that it comes to rest on a lateral end face of the wall or sole plate or in a recess formed in the wall or sole plate. In this way, very high (tensile) forces can be diverted from the feedthrough device to the wall or a sole plate without the feedthrough device changing its mounting position relative to the opening.

According to a further alternative embodiment, several lines are led through several sleeve pipes and the projections of the sleeve pipes are clamped by means of a common clamping device. In this way, a so-called house entry combination is realized for the combined passage of, for example, water and gas pipes, cables, an electrical power supply and cables for telecommunications equipment. The projections of the sleeve pipes are expediently clamped by means of a single clamping plate.

The feedthrough device according to the invention is described below using exemplary embodiments with reference to the accompanying drawings

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described. Showing:

Fig. 1 shows a first embodiment of a feedthrough device with a line to be led through in a sectional view;

Fig. 2 shows a second embodiment of a feedthrough device according to the invention with several lines to be led through in a sectional view;

Fig. 3 shows a third embodiment of a feedthrough device with several lines to be led through in a sectional view;

Fig. 4 shows a fourth embodiment of a feedthrough device according to the invention for passing through a cable in a sectional view;

Fig. 5 shows a fifth embodiment of a feedthrough device according to the invention for passing through a cable in a sectional view;

Fig. 6 shows a sixth embodiment of a feedthrough device according to the invention for passing through a cable in a sectional view;

Fig. 7 shows a seventh embodiment of a feedthrough device according to the invention for passing through a cable in a sectional view;

Fig. 8 shows an eighth embodiment of a feedthrough device according to the invention for passing through a cable.

The feedthrough device shown in Fig. 1 is used for the sealed passage of a line 2 through a cylindrical opening 6 formed in a wall 4 of a building. The feedthrough device could alternatively be inserted into an opening 6 formed in a ceiling or a base plate of a building. The feedthrough device has two deformable sealing elements 10 and 12 made of a rubber-elastic material that can be placed between an inner surface 8 of the opening 6 and the outer surface of the line 2, which have a circular disk shape and each have a central, cylindrical through-hole.

A clamping device 14 for clamping and sealing the

Sealing elements 10, 12 have two spaced, essentially dimensionally stable clamping plates 16 and 18 made of metal, between which the two sealing elements 10, 12 are arranged. Between the two sealing elements 10, 12 there is an intermediate plate 20 made of metal, which is also dimensionally stable. The clamping plates 16 and 18 and the intermediate plate 20 essentially have the shape of a circular disk and each have a central through-hole. The clamping plate 16 has a larger diameter than the opening 6, so that its outer edge section comes into contact with a (side) surface of the wall 4; it can also be referred to as an anchor plate, since due to its size relative to the opening 6 it prevents axial movement of the clamping plate 16 and the feed-through device. The clamping plate 18 and the intermediate plate 20 have a diameter such that they can be inserted into the opening 6 without contact with the inner surface 8 of the latter.

A sleeve pipe 22, which is occasionally also referred to as an empty pipe, partially accommodates the line 2 to be led through in the area of the opening 6 and in the outside area A of the building. In Fig. 1 on the left is the interior I of the building; the sleeve pipe 22 can, for example, be laid in the ground next to the house and lead to a connection station at which the line 2 is connected to a supply line for gas or water.

The sleeve tube 22 has a circular, flange-like projection 24 at its end section - on the left in Fig. 1. The projection 24 protrudes radially outwards at a right angle from the wall of the sleeve tube 22 and its end face - pointing to the left in Fig. 1 - is in surface contact with an end face of the sealing element 10 on the right in Fig. 1. The projection 24 is in a positive connection with the intermediate plate 20 of the clamping device 14; it is arranged within a circumferential recess formed on the intermediate plate 20, the extent of which in the axial direction corresponds to the width of the projection 24 in the axial direction, so that the - left - end face of the projection 24 is aligned with the - left end face of the intermediate plate 20. The sleeve tube 22 is fixed to the feedthrough device by the positive engagement between the projection 24 of the sleeve tube 22 and the intermediate plate 20 of the clamping device 14 and additionally the contact with the sealing element 24. In the event of axial forces occurring on the sleeve tube 22, which are illustrated by the arrows 26 and can be caused, for example, by an unintentional intervention by an excavator, the sleeve tube 22 is held on the intermediate plate 20 by means of the projection 24. The intermediate plate 20 rests on the

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Sealing element 12, which in turn is supported on the clamping plate 18. This force is transferred to the clamping plate 16 by means of the clamping bolts 28 of the clamping device 14 and the nuts 30 screwed onto the clamping bolts 28, which ultimately transfers the applied force to the wall 4. Washers 32 are arranged between the clamping plate 16 and the nuts 30.

Because the deformable sealing body 10 is pressed by means of the clamping device 14 not only against the inner surface of the opening 6 and the outer surface of the line 2, but also against the front surface of the projection 24, no moisture or gas can penetrate from the annular space between the line 2 and the sleeve pipe 22 into the interior I of the building. Furthermore, no gas or moisture or liquid can penetrate from the outside space A relative to the building into the interior I.

The embodiment of a feedthrough device shown in Fig. 2 serves for the sealed passage of several lines 2 through an opening 6 formed in a wall 4. Insofar as the parts shown in Fig. 2 correspond to those of the first embodiment according to Fig. 1, the same reference numerals have been used and reference is made to the above descriptions for the description.

The clamping device 34 has a sealing pot 36, a pressure or clamping plate 38 and four clamping bolts (not shown) with which the sealing pot 36 and the clamping plate 38 can be clamped relative to one another by tightening clamping screws so that a deformable rubber-elastic sealing element 40 with several through holes for passing the lines 2 through is pressed so that it is pressed against the sealing pot 36, the outer surface of the line 2, the clamping plate 38 and an end face of a projection 24 of a sleeve tube 22. The sealing pot 36 has an outer flange section 42 which lies opposite a side surface of the wall 4, a cylindrical connecting section 44 extending in the axial direction and a flange-like clamping section 46 adjoining this and extending essentially radially inwards, with the aid of which the sealing element is pressed by tightening the clamping screws (not shown). A sealing rubber 48 is arranged between the sealing pot 36 and the wall 4.

The flange-like projection 24 is formed integrally with the sleeve tube 22 at its end section. The projection 24 is within a

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38 and is in a positive connection with the clamping plate 38, so that any tensile forces that may occur (see arrows 26) are absorbed by the clamping plate 38. Tensile forces opposite to the direction of the arrows 26 would be transferred to the sealing element 40.

As can be seen from the lower section of Fig. 2, the sleeve tube 23 has a flange-like projection 24 extending radially outward, which engages in a form-fitting manner with an axial insert 50 formed on the clamping section 46 of the sealing pot 36, so that larger axial forces (arrow 26) can be transmitted from the sleeve tube 23 to the sealing pot 36.

A further sealing insert 52 is arranged in the end region of the sleeve tube 23 and, when clamped, ensures a seal against the sleeve tube 23 and the cable 3, which is a cable 3 for transmitting data (e.g. telecommunications). The sealing insert 52 has two clamping plates 54 and 56 and several clamping bolts 60 that can be clamped using nuts 58. The clamping plate 56 has a diameter such that it rests against the left end face of the projection 24 of the sleeve tube 23 in Fig. 2.

The third embodiment shown in Fig. 3 is similar to that shown in Fig. 2 and also has a sealing pot 36. Four lines 2, 3 are led through. With regard to the description of identical parts, which are provided with identical reference numerals, reference is made to the above descriptions of Fig. 3. A sleeve tube 62 for leading through the line 2 has a flange-like projection 64 arranged on its end section, which is welded to the sleeve tube 62 and is thus formed integrally with it. The projection 64 is also part of a clamping plate 38 of the clamping device 14 for pressing the sealing element 10. The sealing element 10 is clamped with the aid of several clamping bolts (not shown) in such a way that it is pressed against the line 2, the connecting section 44 of the sealing pot 36, the clamping section 46 and the projection 64 and the clamping plate 38 and the cable 3.

As can be seen from the left section of Fig. 3, a support ring element 66 with an internally trumpet- or funnel-shaped section is arranged concentrically to the line 2 and is arranged by means of an annular fastening plate 68 resting on the wall 4 and a support plate 70 resting on the inner surface 8 of the opening 6, which is also in the form of a circular disk.

Due to the trumpet-shaped widening of the support ring element 66, a flexible line 2, such as a cable 3, in the event that it is connected to a fitting in a manner not shown and axial tensile forces occur, would reduce its bending radius between the area of the feedthrough device and the fitting, so that the cable 3 comes to rest flat on the inside of the funnel-shaped widening section of the support ring element 66. The resulting transverse forces do not destroy the cable 3 because it can rest against the support ring element 66.

The embodiment shown in Fig. 4 has a clamping device 14 for pressing a deformable sealing element 10 and a support ring element 72 that widens in a trumpet shape on its inner surface 71. The clamping device 14 has a clamping plate 16 that rests on the wall 4, a clamping plate 18 arranged inside the opening 6 and several clamping bolts 28 that are welded to the clamping plate 18 on the one hand and can be clamped relative to one another on the other hand by means of threads and clamping nuts 30 formed on the clamping bolts 28. The support ring element 72 is screwed to the clamping plate 16 of the clamping device 14 using the clamping bolts 28. A flexible cable 3 that is guided through it is connected in a manner not shown to a fitting inside I of a building and to a supply line outside A of the building. In the event that a tensile force is exerted on the line 3 in the direction of arrow 26, the bending radius shown on the left in Fig. 4 is reduced and the line 3 is pulled upwards to the right in Fig. 4, so that the line 3 comes to rest with its outer surface on the inner surface 71 of the support ring element 72 without being damaged.

Furthermore, the support element 72 serves to ensure that the elastic sealing element 10 is not deformed when a cable 3 is pulled, so that the formation of a gap between the cable 3 and the sealing element 10 below the cable 3 (in Figure 4) can be avoided. In this way, leaks can be prevented because the sealing effect of the elastic sealing element 10 is fully retained.

The fifth embodiment shown in Fig. 5 is similar to the embodiment previously described with reference to Fig. 4; identical parts are provided with identical reference numerals and reference is made to the above descriptions. A support ring element 74 with an inner surface 71 widening in the shape of a trumpet has a recess within which a pipe section 76 welded to the clamping plate 16 is pressed in, so that the support ring element 74

is attached to the clamping plate 16 by means of the pipe section 76.

The sixth embodiment of a feedthrough device shown in Fig. 6 is similar to the embodiment described with reference to Fig. 4, so that in order to avoid repetition, reference is made to the above descriptions with regard to identical parts which are provided with the same reference numerals. The sealing device 14 has two clamping plates 16, 18 and two sealing elements 10, 12, between which an intermediate plate 20 is arranged and which are pressed by means of the clamping device 14 such that the sealing element 10 is in sealing contact with the inner surface 8 of the opening 6, the cable 3, the clamping plate 16 and the intermediate plate 20. A sleeve tube 23 projects into the opening 6 and, in the assembled state, is in contact with its outer surface with the sealing element 12, which is pressed sealingly against the inner surface 8 and the outer surface of the sleeve tube 23 and the intermediate plate 20 and the clamping plate.

The embodiment shown in Fig. 7 is partially identical to the sixth embodiment described above, so that reference is made to the above descriptions with regard to identical parts. It differs in that instead of the support ring element 72, a support ring element 74 described with reference to Fig. 5 is fastened to the clamping plate 16 by means of a pipe section 76 welded to the clamping plate 16; with regard to the support ring element 74, reference is made to the above description of Fig. 5.

The sleeve tube 78 shown in Fig. 8, which corresponds to the sleeve tube 22 shown in Fig. 1, has similarities with the first embodiment shown with reference to Fig. 1, so that with regard to identical parts which are provided with the same reference numerals, reference is made to the above description. The sleeve tube 78 shown in Fig. 8 has no projection on its end section. A support ring 80 made of a substantially rigid material is arranged inside the sleeve tube 78 in the region of the sealing element 12 and absorbs radial forces which occur due to the pressing of the sealing elements 10 and 12 when braced by the clamping device 14. The sleeve tube 78 and the support ring 80 rest against the sealing element 10 with their end faces on the left in Fig. 8.

List of reference symbols 2 Line 3 Cable 4 Wall 6 breakthrough 8th Inner surface 10 Sealing element 12 Sealing element 14 Clamping device 16 Chipboards 18 Chipboards 20 Intermediate plate 22 Sleeve tube 23 Sleeve tube 24 head Start 26 Arrows 28 Clamping bolt 30 Nuts 32 Washers 34 Clamping device 36 Sealing pot 38 Pressure or clamping plate 40 Sealing element 42 Flange section 44 Connecting section 46 Clamping section 48 Sealing rubber 50 Mission 52 Sealing insert 54 Chipboards 56 Chipboards 58 Nuts

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60 Clamping bolt 62 Sleeve tube 64 head Start 66 Support ring element 68 Mounting plate 70 Lintel plate 71 Inner surface 72 Support ring element 74 Support ring element 76 Pipe section 78 Sleeve tube 80 Support ring

Claims (13)

1. Feedthrough device for the sealed passage of at least one line ( 2 ) through an opening ( 6 ) formed in a wall ( 4 ) or the like, in particular for the gas- and liquid-tight passage of cables,
with at least one deformable sealing element ( 10 , 12 , 40 ) which can be placed between an inner surface ( 8 ) of the opening ( 6 ) and an outer surface of the line ( 2 ),
a clamping device ( 14 , 34 ) for clamping and sealingly pressing the sealing element ( 10 , 12 , 40 )
and with at least one sleeve tube ( 22 , 23 , 62 , 78 ) receiving the line ( 2 ) to be passed through,
characterized in that the sleeve tube ( 22 , 23 , 62 , 78 ) has at least one projection ( 24 , 64 ) and/or a recess which is in a positive connection with the clamping device ( 14 , 34 ) and/or the sealing element ( 10 , 12 , 40 ) in the assembled state. 2. Feedthrough device, in particular according to claim 1 or the preamble of claim 1,
with a support ring element ( 66 , 72 , 74 ) arranged at a lateral end section of the feedthrough device and widening in the shape of a trumpet on the inside for supporting a line ( 2 ),
wherein the clamping device ( 14 , 34 ) has two dimensionally stable clamping plates ( 16 , 18 , 54 , 56 ), between which the deformable sealing element ( 10 , 12 ) is arranged and which can be clamped by means of at least one clamping bolt ( 28 ), characterized in that the trumpet-shaped widening support ring element ( 66 , 72 , 74 ) is arranged on one of the clamping plates ( 16 ) of the clamping device ( 14 ). 3. Feedthrough device according to claim 2, characterized in that the trumpet-shaped widening support ring element ( 66 , 72 , 74 ) is fastened to a clamping plate ( 16 ) by means of several clamping bolts ( 28 ). 4. Feedthrough device according to claim 2, characterized in that the trumpet-shaped widening support ring element is formed integrally with a clamping plate ( 16 ). 5. Feedthrough device according to one of the preceding claims, characterized in that the projection ( 24 , 64 ) arranged on the sleeve tube ( 22 , 62 , 78 ) extends radially outward in the manner of a flange. 6. Feedthrough device according to claim 5, characterized in that the projection ( 24 , 64 ) is arranged on an end portion of the sleeve tube ( 22 , 62 , 78 ). 7. Feedthrough device according to claim 5 or 6, characterized in that the projection ( 24 , 62 ) rests with a front end surface on the deformable sealing element ( 10 ) and is pressed onto the deformable sealing element ( 10 , 12 , 40 ) by means of a clamping plate ( 16 , 18 , 54 , 56 ) of the clamping device ( 14 , 34 ). 8. Feedthrough device according to claim 5, 6 or 7, characterized in that the projection ( 24 , 64 ) in the assembled state is arranged in a recess formed on the clamping plate ( 16 ). 9. Feedthrough device according to one of claims 5 to 7, characterized in that two deformable sealing elements ( 10 , 12 ) arranged at a distance from one another are provided, that a substantially dimensionally stable intermediate plate ( 20 ) is arranged between the two deformable sealing elements ( 10 , 12 ) and that the projection ( 24 ) of the sleeve tube ( 22 ) is in positive engagement with the intermediate plate ( 20 ). 10. Feedthrough device according to claim 9, characterized in that the projection ( 24 , 64 ) in the assembled state is arranged in a recess formed on the intermediate plate ( 20 ). 11. Feedthrough device according to at least one of the preceding claims, characterized in that a clamping plate ( 16 ) has a size such that it comes to rest on a lateral surface of the wall ( 4 ) or sole plate or in a recess formed in the wall ( 4 ) or sole plate. 12. Feedthrough device according to one of the preceding claims, characterized in that several lines ( 2 , 3 ) are passed through several sleeve tubes ( 22 , 23 ) and the projections ( 24 ) of the sleeve tubes ( 22 , 23 ) are clamped by means of a common clamping device ( 34 ). 13. Feedthrough device according to claim 12, characterized in that the projections ( 24 ) of the sleeve tubes ( 22 , 23 ) are clamped by means of a clamping plate ( 38 ).