DE202020102111U1 - Testable cable entry - Google Patents

Abstract

Having device (1) for sealing a line bushing through an opening (3) in a wall area
a first sealing body (2a) which can be arranged around the line and has a first inner surface (4a) for placing on the line (5) and a first outer surface (6a) for bringing into contact with a reveal (7) delimiting the opening,
a second sealing body (2b) which can be arranged around the line (5) and has a second inner surface (4b) for placing on the line (5) and a second outer surface (6b) for bringing it into contact with the reveal (7), the second sealing body ( 2b) is arranged offset in a line direction (LR) to the first sealing body (2a),
a tensioning device (8) for tensioning the first sealing body (2a) and the second sealing body (2b), so that the first sealing body (2a) with the first inner surface (4a) sealingly on the line (5) and with the first outer surface (6a) ) rests sealingly on the reveal (7) and so that the second sealing body (2b) rests sealingly with the second inner surface (4b) on the line (5) and sealingly rests on the reveal (7) with the second outer surface (6b), wherein the clamping device (8) has two mutually variable clamping bodies (10a, 10b), the first sealing body (2a) and the second sealing body (2b) being arranged between the clamping bodies (10a, 10b),
an intermediate plate (16) which is arranged between the first sealing body (2a) and the second sealing body (2b) and is designed to keep a test volume (18) free between them, which is a line volume (20) and bounded by the line (5) comprises a soffit volume (22) bounded by the soffit (7), and
a test line (28) which extends through the first sealing body (2a),
wherein the intermediate plate (16) can be arranged around the line (5) and is designed to be closed in the circumferential direction (UR) around the line (5), and wherein
the intermediate plate (16) has at least one recess (34) which forms at least a portion of a fluid-conducting connection between the test line (28) and the line volume (20) and / or the reveal volume (22).

Description

The invention relates to a device for sealing a line bushing through an opening in a wall area, having a first sealing body which can be arranged around the line and has a first inner surface for placing on the line and a first outer surface for bringing it into contact with a reveal delimiting the opening, one around the A second sealing body which can be arranged around the line and has a second inner surface for placing on the line and a second outer surface for bringing it into contact with the reveal, the second sealing body being offset in the direction of the line to the first sealing body, a tensioning device for bracing the first sealing body and the second sealing body, so that the first sealing body rests sealingly with the first inner surface on the line and with the first outer surface sealingly on the soffit and so that the second sealing body rests sealingly with the second inner surface on the line and sealingly with the second outer surface the reveal, the clamping device having two mutually variable clamping bodies, the first sealing body and the second sealing body being arranged between the clamping bodies, an intermediate plate which is arranged between the first sealing body and the second sealing body and designed for this purpose, between them To keep test volume free, which comprises a line volume limited by the line and a volume limited by the reveal, and a test line which extends through the first sealing body. Furthermore, a method for sealing an opening through which a line passes is disclosed.

In many cases it is necessary to lay lines, such as media or supply lines, through openings in walls or wall areas, in particular through openings in house walls, floor slabs or ship walls. In order to prevent the penetration of dirt and / or other media, in particular pressurized water, a tight seal of the opening in the wall must be guaranteed. Here it is possible to completely embed the lines when the wall is erected, with the replacement of damaged lines or the subsequent installation of additional lines only being possible with great effort. To solve this problem, devices have been developed for sealing line bushings, which are also known as house entries or wall bushings. Such devices are used to seal lines against a breakthrough or an opening in a wall. Such lines are usually introduced into buildings from the outside through a vertical building wall or through a horizontal floor slab. The device is inserted inside an opening in the floor slab or building wall and with the sealing of the device against the reveal of the wall delimiting the opening and the line passing through the opening, the device is set or fixed within the opening. In addition, with the sealing of the device from the line guided through the opening and from the opening, such a wall breakthrough or an opening in the building wall or floor plate is preferably impermeable to environmental influences such as moisture or dirt.

The known devices for sealing and / or sealing off a bushing have at least one sealing body that can be arranged around the line in some areas, the inner surface of which rests against the line passed through the opening in the wall area or is brought into contact during sealing. In addition, the sealing body has an outer surface with which the sealing body is brought into contact with a reveal delimiting the opening. The outer dimensions, in particular the diameter, of the sealing body can be selected in such a way that the sealing body is already in full contact with the wall surface when it is inserted into the opening. In addition, known devices include a clamping device with which the sealing body is clamped in particular parallel in the longitudinal direction of the line to be sealed, also called the line direction. The sealing body is compressed in particular in the axial direction and at the same time expands in the radial direction. By expanding in the radial direction, the inner surface of the sealing element is pressed onto the outer jacket surface of the line and the outer surface is pressed against the reveal of the opening in the wall. In addition, a sealing function is brought about by the sealing body in the direction of the line and the reveal in the breakthrough or in the opening. The sealing element is braced by means of two tensioning bodies which are arranged on both sides of the sealing body and which can be varied in their spacing from one another.

The disadvantage of these known devices is that a sealing closure of the opening cannot be checked or can only be checked inadequately, and that leaks often cannot be detected immediately. Hidden defects therefore often only appear later, especially after the installation work has been completed. For example, in the case of cable penetrations in the underground cellar walls of buildings, water can only enter when heavy rainfall occurs. In order to counter this problem, devices have been developed which allow the sealing of the opening to be checked after the device has been braced.

the end DE 20 2011 104 521 U1 a device for sealing a line bushing is known which has an elastomer body, a tensioning device for tensioning the elastomer body and an intermediate plate which is designed to keep a test volume free in the interior of the tensioned elastomer body. The test volume can be pressurized via a valve body. If the pressure in the test volume drops, this signals a lack of tightness in the line penetration. A separating joint is provided in the intermediate plate, which connects an area of the test volume delimited by the line with an area of the test volume delimited by the soffit of the wall opening. The parting line also serves to enable the line bushing to be opened and thus to allow it to be placed on lines that have already been laid. A major disadvantage of such a parting line is the reduced mechanical stability of the intermediate plate. As part of the assembly of the device, this results in problems when aligning the various components with one another, as a result of which assembly time and thus assembly costs are increased. For example, the intermediate plate can slip off the line or expand, so that it is difficult for clamping elements to be passed through. Furthermore, an intermediate plate with a parting line causes problems in terms of testability and reliability of the seal. Thus, the intermediate plate can be deformed in the circumferential direction by applying the clamping force, for example because the elastomer body penetrates into the circumferential gap formed between the reveal and the intermediate plate during tensioning. If the intermediate plate is deformed, the parting line can be closed, so that a fluid-conducting connection of the area of the test volume bounded by the line with the area of the test volume bounded by the reveal is no longer ensured. Furthermore, the test volume limited by the reveal can be closed. As a result, a test pressure applied by means of the valve body can also be constant if part of the test volume is not sealed off from the environment, which can result in incorrect test results. Another disadvantage is that the elastomer body can penetrate the parting line and expand the intermediate plate in the circumferential direction. As a result, the elastomer body can deform unevenly and the production of a sealing closure is no longer guaranteed. Furthermore, when an uneven tensioning force is applied, the intermediate plate can also deform in the direction of the line, so that flatness of the intermediate plate transversely to the direction of the line is not guaranteed, which can result in further problems when checking the sealing closure of the opening.

the end US 2004/0103600 A1 a device with sealing blocks is known, which is provided for sealing a line bushing of cables or pipes in walls. To accommodate the line, the sealing blocks are designed to be divided transversely to the direction of the line and can be braced transversely to the direction of the line by means of a wedge element. Furthermore, by means of spacers, which are also divided transversely to the line direction, a space can be kept free between two block segments arranged one behind the other in the line direction, which space can be subjected to a test pressure. The spacers have pins that prevent relative movement between the spacer and adjacent sealing blocks. This solves the problem of slipping described above. The disadvantage of the separation of the spacers transversely to the longitudinal direction is that, analogously to the device of the DE 20 2011 104 521 U1 the sealing blocks penetrate into the gap formed between two spacers and can deform unevenly, whereby a sealing closure of the opening is made difficult or prevented. Furthermore, adjacent spacers, which together enclose a line, are not connected, so that they can move in the direction of the line and thus close the test volume. Analogous to the device mentioned above DE 20 2011 104 521 U1 this can result in incorrect test results. Due to the separate design of the spacers, the pins extending into the sealing blocks are essential for the correct arrangement and mounting of the sealing blocks. Without the pins, the various components of the device would move transversely to the direction of the line when tensioned. The disadvantages of the pins are a weakening of the structure of the sealing blocks, difficult assembly in difficult to access locations and increased production costs.

The invention is therefore based on the object of specifying a device for sealing a line bushing which enables a more reliable sealing effect and testing, improved alignment and assembly and / or low production costs.

The invention solves the problem with a device of the type mentioned at the outset, wherein the intermediate plate can be arranged around the line and is designed to be closed in the circumferential direction around the line, and wherein the intermediate plate has at least one recess that forms at least a section of a fluid-conducting connection between the test line and the line volume and / or the soffit volume. The invention is based on the knowledge that a reliable sealing effect and testing can be ensured by means of a closed intermediate plate. The intermediate plate is circumferentially around the line closed and therefore has an improved resistance to deformation compared to the known devices. In contrast to a version with a parting line, the intermediate plate has no free ends. It should be understood that a closed intermediate plate can also have variable cross-sections in the circumferential direction. A main direction of extension of the line through the intermediate plate defines the line direction. The intermediate plate preferably has a through opening for receiving the line. The through opening particularly preferably extends centrally, in particular along a central axis, through the intermediate plate. A radial direction of the device runs transversely to the line direction. The circumferential direction runs transversely to the radial direction around the line direction. The intermediate plate is preferably designed as a closed ring. A circumferential direction can also be defined analogously for non-circular intermediate plates and non-circular line cross-sections.

Despite a circumferentially closed and thus rigid design of the intermediate plate, the recess enables a fluid-conducting connection between the test line and the line volume and / or the reveal volume, whereby a test pressure can be applied to the line volume and / or the reveal volume by means of the test line. It should be understood that the depression is designed as a non-separating depression. The recess is preferably a non-continuous recess, such as, for example, a blind hole or a non-continuous slot. Particularly preferably, the recess forms a fluid-conducting connection between the line volume and the reveal volume. Furthermore, the test line preferably forms a section of a fluid-conducting connection between the line volume and the reveal volume.

The circumferential connection of the intermediate plate in connection with the recess can ensure that testing of at least a section of the test volume is always guaranteed. The section of the fluid-conducting connection formed by the recess cannot be closed due to the circumferential connection due to the bracing by means of the tensioning device. Furthermore, the synergy effect is achieved by the circumferential closure that an arrangement of the various components with respect to one another is simplified. The intermediate plate is closed in the circumferential direction and therefore cannot slip off the line transversely to the line direction. Furthermore, no pins or other means are necessary to fix the intermediate plate on the sealing bodies and to prevent a relative displacement of one or more of the sealing bodies relative to the intermediate plate. The recess can preferably also be designed as one or more bores extending through the intermediate plate. Furthermore, the closed intermediate plate preferably also allows the pipe volume and the reveal volume to be checked separately.

In a preferred embodiment of the device, the recess is designed as a first groove with a first groove depth. The first groove depth of the first groove corresponds to a depth of the depression and is therefore determined in the same direction. A groove length of the first groove is preferably greater than the first groove depth. However, it can also be provided that the first groove depth is greater than or equal to the groove length of the first groove. The first groove is also delimited in a depth direction by a groove base. The first groove can extend completely or only partially on the intermediate plate, wherein a first groove running only partially through the intermediate plate can also be referred to as a stepped groove.

The first groove preferably runs transversely to a circumferential direction of the intermediate plate. In the case of a first groove running transversely to the circumferential direction, the first groove depth is determined parallel to the line direction. The first groove particularly preferably runs radially to the line direction and / or radially to a center axis of the intermediate plate. However, it can also be provided that the first groove runs tangentially to a circle around the center axis of the intermediate plate. Furthermore, the first groove can also be curved.

According to a preferred development, the first groove connects the line volume and the reveal volume in a fluid-conducting manner. This ensures that both the pipe volume and the reveal volume can be checked. The first groove preferably extends completely from a radially inner side of the intermediate plate to a radially outer side of the intermediate plate.

The depth of the groove is preferably a maximum of 0.5 of a thickness of the intermediate plate, measured in the direction of the line. The thickness of the intermediate plate is determined in the line direction from one side of the intermediate plate on which the first groove is arranged to an opposite side. A material thickness between the groove base and the opposite side is therefore at least 0.5 of a thickness of the intermediate plate. It can also be provided that the groove depth is a maximum of 0.4, preferably a maximum of 0.35, more preferably a maximum of 0.3, more preferably a maximum of 0.25, particularly preferably a maximum of 0.2, of a thickness of the intermediate plate. Furthermore, a groove depth can preferably be a minimum of 0.1, preferably a minimum of 0.15, more preferably a minimum of 0.2, more preferably a minimum of 0.25, particularly preferably a minimum of 0.3, of a thickness of the intermediate plate, measured in the direction of the line. The maximum groove depth influences the circumferential stability of the Intermediate plate, whereby the circumferential stability increases with decreasing groove depth. A residual plate thickness, measured from a groove base of the groove to a side of the intermediate plate opposite the groove base, preferably has a minimum value, mechanical stability of the intermediate plate being just guaranteed when it is braced. The mechanical stability is just guaranteed if the intermediate plate does not deform when the device is clamped. It should be understood that a common safety factor may be taken into account in determining the minimum value. The groove depth preferably has a value of 1 mm to 6.5 mm, preferably 2 mm to 5 mm, particularly preferably 3 mm to 5 mm, if the thickness of the intermediate plate has a value of 7 mm or greater. A residual plate thickness, measured from a groove base of the groove to a side of the intermediate plate opposite the groove base, preferably has a value of 2 mm or less, preferably 1 mm or less (but in each case greater than 0 mm) if the intermediate plate is made of a metallic material , in particular steel, is made.

In an alternative embodiment, the first groove runs transversely to a radial direction on the intermediate plate. The groove depth of the first groove is then determined in the radial direction. The longitudinal direction of the first groove is preferably parallel to the line direction. However, it can also be provided that the longitudinal direction of the groove of the first groove encloses an angle with the direction of the line. Furthermore, in the alternative embodiment, the longitudinal direction of the groove of the first groove can also be curved and / or kinked.

The device preferably has a second groove which runs transversely to a radial direction on the intermediate plate. The second groove preferably runs in the line direction on the intermediate plate. The first groove and the second groove are particularly preferably designed symmetrically in a circumferential cross section of the intermediate plate. However, it can also be provided that a second groove depth of the second groove is smaller or larger than the groove depth of the first groove. The first groove and / or the second groove can preferably be designed as a stepped groove. The first groove and the second groove preferably extend at an identical circumferential position of the intermediate plate. However, it can also be provided that the first groove and the second groove extend in mutually offset circumferential positions.

In a preferred embodiment, the second groove forms at least a section of a fluid-conducting connection between the test line and the line volume and / or the reveal volume. The second groove extends in the radial direction, that is to say in a depth direction of the second groove, only partially through the intermediate plate. Particularly preferably, the first groove forms at least a section of a fluid-conducting connection between the test line and the line volume and the second groove forms at least a section of a fluid-conducting connection between the test line and the reveal volume. A section of a fluid-conducting connection between the line volume and the soffit volume is preferably formed by the test line.

A web is preferably formed between a first groove base of the first groove and a second groove base of the second groove. The web is a material web that closes the intermediate plate in the circumferential direction. The web is preferably arranged in the radial direction between the first groove base and the second groove base. However, it can also be provided that a web is arranged in the circumferential direction between the first groove and the second groove. A groove depth of the first groove is preferably less than 0.5 of a radial thickness of the intermediate plate, measured in the radial direction between the radially inner surface and the radially outer surface of the intermediate plate. Analogously, a second groove depth of the second groove is preferably less than 0.5 of the radial thickness of the intermediate plate. A radial thickness of the web preferably has a value in a range from 0.05 to 0.8, more preferably 0.1 to 0.7, more preferably 0.1 to 0.5, particularly preferably 0.2 to 0.3 , the radial thickness of the intermediate plate.

In a preferred embodiment, a groove width of the first groove, which is transverse to the longitudinal direction of the groove and to the groove depth, is smaller than a test line diameter (outer diameter) of the test line. Due to the larger test line diameter, the test line cannot enter the first groove and the fluid-conducting connection is ensured. If the test line were to enter the first groove, an opening of the test line could be arranged on the groove base and closed by this, whereby a fluid-conducting connection between the test line and the reveal volume and / or the line volume would be interrupted. Furthermore, the test line could at least partially block a section of a fluid-conducting connection formed by the groove between the line volume and the soffit volume and thus hinder a test of the device. These effects can be prevented by a test line diameter which is greater than a groove width of the groove, which results in improved test reliability of the device.

The test line preferably extends through a test bore of the first sealing body, a test bore diameter of the test bore in a relaxed state in which the first sealing body and the second sealing body are not by means of the tensioning device are tensioned, is larger than the corresponding test line diameter of the test line, and wherein the first sealing body is designed to make a sealing contact with the test line as a result of the tensioning. In the relaxed state, the first sealing body is not or only slightly deformed, so that the test line can simply be inserted into the test bore, with simple assembly being achieved. Furthermore, the preferred embodiment enables position corrections of the test line after pre-assembly and before tensioning. As a result of the tensioning, the first sealing body lies against the test line in a sealing manner, so that a fluid flow is prevented on an outer surface of the test line. The test line is preferably frictionally fixed in the first sealing body as a result of the tensioning.

In a preferred embodiment, the test line has an end piece which is inserted in a form-fitting manner between the first sealing body and the intermediate plate. The positive insertion prevents the test line from slipping out before it is braced and makes it easier to assemble the device. The end piece is preferably designed to be enlarged in at least one spatial direction which is transverse to a longitudinal direction of the test line. The end piece can, for example, be a T-piece or form a T-shape with the test line, a width of a head of the T-piece being greater than the inside diameter of the test bore. The end piece is preferably designed as a radial shoulder. An outer diameter of the end piece (end piece diameter) is then greater than the corresponding test lead diameter.

In a preferred embodiment, at least one dimension of the end piece, which is transverse to a longitudinal direction of the groove in the first groove, is greater than the groove width of the first groove. The end piece diameter is preferably greater than the groove width of the groove. A dimension of the end piece that is larger than the groove width prevents the end piece from entering the first groove, which results in increased test reliability analogous to the above statements on the test line diameter. It should be understood that the test line diameter can also be smaller than the groove width if the at least one dimension of the end piece, which is transverse to the longitudinal direction of the first groove, is greater than the groove width of the first groove. Preferably, at least two mutually perpendicular dimensions of the end piece are greater than the groove width of the first groove.

The intermediate plate preferably has a receptacle for receiving the end piece. The receptacle is preferably designed to fix the end piece in at least one spatial direction. However, it can also be provided that the end piece is freely movable in the receptacle. In a preferred embodiment, the receptacle is a receptacle recess which adjoins the recess in the line direction and / or extends into the recess in sections. For example, the receptacle can be a blind hole adjoining the recess. Likewise preferably, the receptacle can widen the recess in sections. A receiving depth of the receiving recess in the line direction is preferably greater than a corresponding length of the end piece. The end piece can thus be completely received in the receptacle of the intermediate plate in the line direction and the first sealing body can be placed evenly on the intermediate plate.

The test line preferably has a first line element and the end piece is a second line element which is integrally molded onto the first line element. The end piece is preferably formed from a material identical to the material of the first conduit element. A fluid-tight connection can be ensured by a material connection, the end piece preferably being welded, glued and / or fused to the first line element.

According to a further embodiment, the test line has a coupling element for connecting a pressure generating device. The coupling element has no locking function. However, it can be provided that the device has a closure which is designed to seal the coupling element in a fluid-tight manner. In contrast to a valve, a coupling element therefore has no retention function that selectively enables or prevents a fluid-conducting connection. Rather, the line is open when no closure is attached. Furthermore, the coupling element is preferably designed for tool-free connection of a pressure generating device to the test line. For example, the coupling element can be a plug connector for compressed air hoses known to the person skilled in the art. In a preferred development, the test line has a valve or is designed as a valve. The test line is preferably designed as a hose or pipe. The test line is particularly preferably designed as a plastic hose or plastic pipe.

The intermediate plate is preferably made at least in sections, preferably completely, from a plastic that is resistant to compression, preferably more compression-resistant than the sealing body. When the sealing body is braced, the intermediate plate does not deform, or only to a lesser extent than the first sealing body and the second sealing body, due to the greater resistance to compression. This prevents the intermediate plate from widening in the radial direction and ensures that the test volume is kept free will. The intermediate plate is preferably formed from a plastic and / or from a metallic material. The intermediate plate is particularly preferably formed from ABS, PC, PE, PP. Furthermore, the intermediate plate is preferably made of steel, in particular stainless steel and / or galvanized and / or hot-dip galvanized steel.

The intermediate plate is preferably produced by means of an injection molding process and / or a stamping process. For example, the intermediate plate can be initially formed by means of an injection molding process and burrs produced during injection molding can be separated by means of a subsequent punching process. However, it can also be provided that the intermediate plate is produced from plates by means of a stamping process, or that the intermediate plate is produced by means of an injection molding process without a subsequent stamping process. In particular, it is preferred that the recess is introduced during injection molding and / or stamping.

Furthermore, a method for sealing an opening through which a line passes is disclosed, comprising the steps of: arranging a first sealing body around the line; Placing an intermediate plate in a line direction on the first sealing body, wherein the intermediate plate has a first recess on a side facing the first sealing body and is closed in the circumferential direction around the line; Arranging a second sealing body around the line and placing the second sealing body on the intermediate plate; Attachment of mutually variable clamping bodies of a clamping device to the first sealing body and the second sealing body, wherein the first sealing body and the second sealing body are arranged between the clamping bodies; and clamping the first sealing body and the second sealing body by means of the tensioning device, a first inner surface of the first sealing body and a second inner surface of the second sealing body sealingly abut the line, and a first outer surface of the first sealing body and a second outer surface of the second sealing body sealingly apply to a soffit delimiting the opening, and keeping a test volume free between the first sealing body and the second sealing body through the intermediate plate, the recess at least a portion of a fluid-conducting connection between a line volume bounded by the line and a soffit volume bounded by the soffit of the opening of the test volume.

It should be understood that the tensioning device, the first sealing body, the second sealing body, the test line and / or the intermediate plate can also be attached to one another before being arranged around the line and, if necessary, can be arranged together around the line. Furthermore, the order of the steps indicated is not fixed and can be varied in whole or in part.

In a preferred development, the method also has the following steps: applying a test pressure to the test volume by means of a pressure generating device connected to the test line; and determining a sealing closure of the opening if the test pressure in the test volume is constant. The step of determining a sealing closure of the opening when the test pressure in the test volume is constant preferably comprises: determining a first test pressure in the test volume at a first point in time, determining a second test pressure in the test volume at a second point in time, determining a difference between the first test pressure and the second test pressure, determining a sealing closure of the opening if the test pressure does not exceed a prescribed pressure loss limit value.

In a second aspect, the invention achieves the object described in the introduction with the use of a device according to the first aspect of the invention for sealing an opening in a wall through which a line passes. The device is preferably used for sealing media lines, such as in particular water lines, sewer lines, gas lines, compressed air lines, and / or signal lines and / or power lines. Furthermore, the device is preferably used to seal a line bushing through an opening in a wall area against pressing water.

It should be understood that the device according to the first aspect, the use of the device according to the second aspect of the invention and the disclosed method have the same and similar sub-aspects as are set out in particular in the dependent claims, so that for the further preferred embodiments of the Method and use, reference is made in full to the above description of the device.

• 1 eine perspektivische Ansicht eines ersten Ausführungsbeispiels einer Vorrichtung zum Abdichten einer Leitungsdurchführung, wobei ein erster Dichtkörper und ein erster Spannkörper teilweise aufgebrochen dargestellt sind;
• 2 eine Schnittdarstellung der Vorrichtung gemäß dem ersten Ausführungsbeispiel;
• 3 eine Schnittdarstellung der Vorrichtung gemäß dem ersten Ausführungsbeispiel, wobei die Vorrichtung in eine Öffnung in einem Wandbereich eingesetzt und verspannt ist;
• 4 eine Schnittdarstellung der Vorrichtung gemäß dem ersten Ausführungsbeispiel, wobei die Schnittebene gegenüber der Darstellung gemäß 2 um 90° gedreht ist;
• 5 ein Detail des in 1 mit einer Markierung versehenen Bereichs;
• 6a eine schematische Draufsicht auf einen Ausschnitt einer Zwischenplatte der Vorrichtung gemäß dem ersten Ausführungsbeispiel;
• 6b eine schematische Schnittansicht der Ansicht gemäß 6a;
• 7 eine Schnittdarstellung der Vorrichtung gemäß dem ersten Ausführungsbeispiel, wobei die Vorrichtung in eine gestufte Öffnung in einem Wandbereich eingesetzt ist;
• 8 eine Schnittdarstellung der Vorrichtung gemäß dem ersten Ausführungsbeispiel, wobei die Vorrichtung in einen Topf eingesetzt und verspannt ist,
• 9 eine Draufsicht auf eine Zwischenplatte einer Vorrichtung gemäß einem zweiten Ausführungsbeispiel; und in
• 10 ein schematisches Ablaufdiagramm des offenbarten Verfahrens.

Embodiments of the invention will now be described below with reference to the drawings. These are not necessarily intended to represent the embodiments to scale; rather, the drawings, if this is useful for the explanation, are made in a schematic and / or slightly distorted form. With regard to additions to the teachings that can be seen directly from the drawings, reference is made to the relevant prior art. It should be taken into account that various modifications and changes relating to the shape and detail of an embodiment can be made without departing from the general idea of the invention. The features of the invention disclosed in the description, in the drawings and in the claims can be essential for the development of the invention both individually and in any combination. In addition, all combinations of at least two of the features disclosed in the description, the drawings and / or the claims fall within the scope of the invention. The general idea of the invention is not restricted to the exact form or the detail of the preferred embodiments shown and described below or restricted to an object that would be restricted in comparison to the object claimed in the claims. In the case of the specified measurement ranges, values lying within the stated limits should also be disclosed as limit values and be able to be used and claimed as required. For the sake of simplicity, the same reference symbols are used below for identical or similar parts or parts with an identical or similar function. Further advantages, features and details of the invention emerge from the following description of the preferred embodiments and with reference to the drawings; these show in:

• 1 a perspective view of a first embodiment of a device for sealing a line bushing, wherein a first sealing body and a first clamping body are shown partially broken away;
• 2 a sectional view of the device according to the first embodiment;
• 3 a sectional view of the device according to the first embodiment, wherein the device is inserted and braced in an opening in a wall area;
• 4th a sectional view of the device according to the first embodiment, the cutting plane compared to the illustration according to FIG 2 is rotated by 90 °;
• 5 a detail of the in 1 marked area;
• 6a a schematic plan view of a section of an intermediate plate of the device according to the first embodiment;
• 6b a schematic sectional view of the view according to FIG 6a ;
• 7th a sectional view of the device according to the first embodiment, wherein the device is inserted into a stepped opening in a wall area;
• 8th a sectional view of the device according to the first embodiment, wherein the device is inserted and clamped in a pot,
• 9 a plan view of an intermediate plate of a device according to a second embodiment; and in
• 10 a schematic flow diagram of the disclosed method.

1 shows an apparatus 1 for sealing and / or sealing off a cable bushing through an opening 3 (in 1 not shown, cf. 7th ) in a wall area with at least one through the opening 3 line routed in a wall area 5 that one around the line 5 around arrangable first sealing body 2a and a second sealing body 2 B having. The first sealing body 2a has a first interior surface 4a to apply to the in 1 line not shown 5 and a first outer surface 6a for bringing into contact with a reveal, also not shown 7th on ( 3 ) covering the opening 3 limited in the wall area. The reveal 7th is one of the opening 3 facing surface of the wall, the case of a round opening 3 corresponds to the lateral surface of a cylinder. The second sealing body comprises in an analogous manner 2 B a second inner surface 4b to place on the line and a second outer surface 6b for bringing into contact with the reveal. In this embodiment, the first sealing body 2a and the second sealing body 2 B as closed rings, each with a through opening for leading the line through 5 educated. However, it can also be provided that the sealing body 2a , 2 B have several through openings for leading through several lines. Furthermore, the sealing body 2a , 2 B also be out of round, in particular rectangular.

The device 1 further comprises a tensioning device 8th for tensioning the first sealing body 2a and the second sealing body 2 B , the sealing body 2a , 2 B by means of the clamping device 8th essentially parallel to a central axis A. in line direction LR be compressed. By upsetting in the direction of the line LR the sealing body expand 2a , 2 B in a substantially radial direction RR across the direction of the line LR the end.

The sealing body 2a , 2 B are therefore preferably made of a flexible material, particularly preferably rubber. When braced, the inner surfaces lay down 4a , 4b the sealing body 2 B sealing to the line 5 on, and the outer surfaces 6a , 6b the sealing body 2a , 2 B sealing to the reveal 7th the opening 3 the wall on ( 3 ).

For tensioning the sealing body 2a , 2 B instructs the clamping device 8th two clamping bodies 10a , 10b which are variable in distance from one another. The sealing body 2a , 2 B are in the direction of the line LR between the clamping bodies 10a , 10b arranged. For changing the distance and for tensioning the sealing body 2a , 2 B are several the clamping body 10a , 10b interconnecting clamping elements 12th in the form of clamping bolts 14th intended. Here are the tension bolts 14th integral with the second clamping body 10b tied together ( 2 ). For example, the clamping bolts 14th with the second clamping body 10b be welded. The clamping bolts 14th extend from the second clamping body 10b through the second sealing body 2 B , an intermediate plate 16 , the first sealing body 2a and the first clamping body 10a , with ends 13th the clamping bolt 14th from the first clamping body 10a protrude. The ends 13th the clamping bolt 14th are also with threads for screwing nuts 15th Mistake. By unscrewing the nuts 15th on the clamping bolts 14th can be a relative distance between the first clamping body 10a and the second clamping body 10b can be reduced, resulting in a clamping force on the sealing body 2a , 2 B results. It can also be provided that the second clamping body 10b Through holes for inserting the clamping bolts 14th having, the clamping bolt 14th then preferably with nuts at both ends 15th are provided or have screw heads on one side. The clamping body 10a , 10b are used as tension rings 12a , 12b formed, which are in one piece here. However, it can also be provided that the clamping rings 12a , 12b are composed of several ring segments.

The intermediate plate 16 is between the first sealing body 2a and the second sealing body 2 B arranged. To details of the intermediate plate 16 to be able to represent are the first sealing body 2a and the first tension ring 12a in 1 shown with an interruption. However, it should be understood that the first sealing body 2a and the first tension ring 12a are formed closed in the circumferential direction. Like the in 2 shown sectional view of the device 1 shows is the intermediate plate 16 preferably with through holes 18th for feeding through the clamping bolts 14th Mistake. The intermediate plate 16 is analogous to the clamping bodies 2a , 2 B around the line 5 can be arranged around. An intermediate plate outer diameter is preferred DA1 the intermediate plate 16 in a relaxed state of the device 1 smaller than a corresponding sealing body outer diameter DA2 the sealing body 2a , 2 B . An intermediate plate inside diameter is also preferred DI1 the intermediate plate 16 larger than a corresponding sealing body inside diameter in a relaxed state DI2 the sealing body 2a , 2 B . However, it can also be provided that the intermediate plate outer diameter DA1 the outer diameter of the sealing body DA2 corresponds, and / or that the inner diameter of the intermediate plate DI1 the inner diameter of the sealing body DI2 is equivalent to. The intermediate plate 16 is preferably formed from a material that is opposite to the material of the sealing body 2a , 2 B has a greater resistance to compression. A resistance of the intermediate plate 16 to changes in shape is then preferably greater than a resistance of the sealing body 2a , 2 B . As explained at the beginning, the first sealing body lay down 2a and the second sealing body 2 B when clamping by means of the clamping device 8th sealing to the line 5 and the reveal 7th the opening 3 on, with the intermediate plate 16 thereby a test volume 18th keeps free ( 3 ).

The intermediate plate preferably expands 16 when braced not or to a lesser extent than the sealing body 2a , 2 B , where the test volume 18th is kept free. Furthermore, the geometry of the intermediate plate 16 , especially the inner diameter of the intermediate plate DI1 and an intermediate plate outer diameter DA1 , to keep the test volume free. The test volume 18th has a line volume 20th that from the line 5 is limited, and a reveal volume 22nd on that of the reveal 7th is limited. The line volume 20th is essentially between the line 5 and a radially inner surface 24 the intermediate plate 16 educated. The reveal volume is analogous 22nd essentially between a radially outer surface 26th the intermediate plate 16 and the reveal 7th the opening 3 Are defined.

Like the in 4th shows a further sectional view of the first embodiment shown, extends a test line 28 the device 1 through the first sealing body 2a . For routing the test lead 28 has the first sealing body 2a a test hole 30th on, with a test bore diameter DI3 the test hole 30th is larger than a corresponding test lead diameter DA3 of the test lead 28 . Thus, in the relaxed state, the test line can be inserted particularly easily 28 into the test hole 30th of the first sealing body 2a can be achieved. When braced, the first sealing body lies down 2a preferably sealing to the test line 28 at.

The test lead 28 extends from the intermediate plate 16 up to a first page 32a the device 1 , the test lead 28 here from the first tension ring 12a is formed protruding. However, it can also be provided that the test lead 28 flush with the first clamping body 10a concludes. In this embodiment, the test lead is 28 as a plastic hose 29 formed, whereby a particularly simple and inexpensive construction is achieved. The test lead can also be preferred 28 also be designed as a tube, in particular a plastic tube. The test line can also be preferred 28 can also be designed as a metal pipe or metal hose. Preferably the test lead is 28 adapted to have a fluid-conducting connection between a first end 40a the test lead 28 and a second end 40b the Test lead 28 to be kept free in a tense state.

5 shows an enlarged representation of the in 1 with the M mark. As the detailed illustration shows, the intermediate plate 16 in this embodiment a recess 34 on which a fluid-conducting connection between the test line 28 and the test volume 18th forms. The depression 34 is the first groove 36 formed transversely to the circumferential direction UR on the intermediate plate 16 runs. A longitudinal direction of the groove LRN the first groove 36 runs radially so that the first groove 36 in the radial direction RR on the intermediate plate 16 extends. The first groove 36 therefore connects both the line volume 20th as well as the reveal volume 22nd with the test lead 28 . One groove length LN the first groove 36 corresponds to a radial width of the intermediate plate 16 ( 6b) . However, it can also be provided that the first groove 36 is a stepped groove from the radially inner side 24 or the radially outer side 26th goes out and in the intermediate plate 16 ends. A first groove depth T1 the first groove 36 corresponds to a depth TV the deepening 34 ( 6b) . The first groove 36 however, it can also be in any orientation from the radially inner side 24 to the radially outer side 26th the intermediate plate 16 extend. For example, the first groove 36 run tangential to a circle, the center of which is essentially on the central axis A. lies. According to this embodiment, the first groove 36 a rectangular groove cross-section. However, it can also be provided that the first groove has a rectangular, U-shaped, dovetail-shaped, T-shaped, V-shaped and / or square cross section.

The first groove depth T1 here 0.5 corresponds to a strength S1 the intermediate plate 16 , measured in the direction of the line LR . This enables a fluid-conducting connection between the line volume 20th and the reveal volume 22nd can be achieved while a stability of the intermediate plate 16 is ensured. Due to the fluid-conducting connection, the test volume 18th by means of the test lead 28 be pressurized. A pressure generating device (not shown) with the test line can be used for this purpose 28 get connected. If a pressure remains within the test volume 18th constant, is a tight seal 1 the opening 3 by means of the first sealing body 2a and the second sealing body 2 B ensured.

The test line has to connect the pressure generating device 28 preferably a coupling element 38 which is designed for tool-free connection to a line of the pressure generating device. The coupling element is preferably 38 a hose connector 39 . The coupling element is particularly preferred 38 closable by means of a closure, not shown, which is removed before the pressure generating device is connected. However, it can also be provided that the test lead 28 a valve (not shown) is or has. The test line can also be preferred 28 on one of the intermediate plates 16 opposite first end 40a also be designed to be open. Following a check of the sealing installation of the device 1 can be the end 40a then be closed by means of a suitable clamp (not shown). It can also be an end 40a the test lead 28 , for example by gluing or melting, can also be permanently closed. This is particularly beneficial when the test lead 28 as a plastic hose 29 is formed as a closed end 40a can be disconnected with simple means to restore a fluid-conducting connection.

At a second end 40b the test lead 28 that of the intermediate plate 16 is facing, here is an end piece 42 provided as a radial shoulder 43 is trained. In 6a is an end piece diameter DA4 of the end piece 42 Shown with dashed lines, the end piece diameter DA4 is larger than the test hole diameter DI3 the test hole 30th . The end piece 42 then preferably prevents the test lead from being pulled out 28 from the first sealing body 2a , especially if it is not tense. Preferably the end piece is 42 materially to the test lead 28 molded. The end piece is particularly preferred 42 a piece of plastic tubing attached to the test lead 28 glued on and / or with the test lead 28 is fused. The tail diameter DA4 of the end piece 42 is larger than a groove width B1 the first groove 36 . By one opposite the groove width B1 the first groove 36 enlarged tail 42 may be an occurrence of the test lead 28 in the first groove 36 be prevented. This avoids the end piece 42 sealing on a first groove base 44 the first groove 36 and the test lead 28 at least partially closed. Furthermore, a fluid-conducting connection between line volumes could 20th and reveal volume 22nd by the entry of the test lead 28 in the first groove 36 to be interrupted.

The intermediate plate preferably has 16 a recording 46 for receiving the end piece 42 on. The recording 46 is as an admission recess 47 in the intermediate plate 16 formed attached to the first groove 36 connects. A depth of recording TA the recording 46 is preferably greater than a corresponding length L2 of the end piece 42 , causing the end piece to protrude 42 from the intermediate plate 16 is avoided. It can also be provided that the receiving depth TA the recording 46 the length L2 of the end piece 42 corresponds to and / or that the test hole 30th a stepped bore with a section for receiving the end piece 42 is. Here is the shot 46 as a blind hole 48 executed, with a blind hole diameter DI4 the blind hole 48 is larger than the end piece diameter DA4 of the end piece 42 . A value of the blind hole diameter can preferably be used DI4 a value of the end piece diameter DA4 correspond. The recording 46 enables a particularly simple arrangement of the end piece 42 on the intermediate plate 16 , reducing the risk of incorrect assembly without a fluid-conducting connection between test volumes 18th and test lead 28 is decreased. An arrangement of the clamping bolts is particularly preferred 14th or associated through holes in the first clamping body 2a and the intermediate plate 16 chosen so that a clear assignment of the recording 42 and the test lead 28 is guaranteed. However, it can also be provided that the clamping bolts 14th , as in this embodiment, in the circumferential direction UR the device 1 are distributed regularly. At a first transition 49a to the line volume 20th and a second transition 49b to the reveal volume 22nd is the first groove 36 rounded. The first transition 49a and / or the second transition 49b can, however, preferably also be sharp-edged and / or be provided with a bevel.

The second tension ring 12b has several spacers here 50 on that on a second page 32b the device 1 are formed protruding in the line direction. By means of the spacers 50 can the device 1 on a paragraph 52 the opening 3 ( 7th ) or one of the opening 3 limiting end plate (not shown) are supported and / or spaced apart, as a result of which the device can slip out 1 from the opening 3 can be prevented. The spacers 50 are preferably cohesive with the second clamping ring 12b tied together. For example, the spacers 50 with the second tension ring 12b be welded. However, it can also be provided that the spacers 50 have an external thread and in corresponding threaded bores of the second clamping ring 12b are screwed in. Furthermore, the clamping bolts can preferably 14th on the second page 32b the device 1 formed protruding and advantageously both for supporting the device 1 as well as for tensioning the sealing body 2a , 2 B to serve.

Those on the second clamping ring are particularly advantageous 12b provided spacers 50 when the device 1 , as in 8th shown in a pot 62 is used. The pot 62 can for example in an opening 3 be used, with an inner wall 64 of the pot 62 then the reveal 7th forms. An end plate 66 of the pot 62 is here with a cylinder section 68 of the pot 62 welded and has a through opening 70 on that for the implementation of a support tube 72 is provided. The support tube 72 extends through the through opening 70 and is on the first line 5 recorded. In this embodiment, the support tube is 72 with the base plate 66 welded and is used to guide the first line 5 , with an assembly of the line 5 in the pot 62 is facilitated. When braced, the first sealing body lay down 2a and the second sealing body 2 B sealing to the line 5 and press the first line 5 so against the support tube 72 that even between the line 5 and the support tube received therein 72 a sealing contact is guaranteed. The spacers 50 make sure there is a distance A. between the second clamping ring 12b and the end plate 66 is observed, whereby a tight seal can be ensured even when the line 5 not completely in the pot, for example due to improper assembly 62 is inserted. It is also achieved that when the sealing body is braced 2a , 2 B occurring forces not on an end section 74 the line 5 act, making the end section 74 could be deformed.

9 shows an intermediate plate 16 according to a second embodiment. The intermediate plate 16 according to the second embodiment, in one device 1 are used, the other components of which are designed analogously to those according to the first embodiment. The first deepening 34 has a first groove 36 with a longitudinal direction of the groove LRN on that transverse to a radial direction RR the intermediate plate runs. The first groove depth T1 the first groove 36 is doing in the radial direction RR certainly. The longitudinal direction of the groove runs here LRN the first groove 36 parallel to the line direction LR , in the 9 is perpendicular to the image plane. However, it can also be provided that a longitudinal direction of the groove LRN the first groove 36 with the line direction LR encloses an angle. The first groove 36 runs on the radially inner surface 24 the intermediate plate 16 . On the radially outer surface 26th indicates the depression 34 also a second groove 56 on, which is also in a substantially radial direction RR on the intermediate plate 16 extends. A value of the second groove depth T2 the second groove 56 is equal to a value of the first groove depth T1 the first groove 36 . However, it can also be provided that the first groove depth T1 the first groove 36 is larger and / or smaller than the second groove depth T2 the second groove 56 . Between the first groove base 44 the first groove 36 and a second groove base 58 the second groove 56 is a jetty 60 educated. By means of the bridge 60 is the intermediate plate 16 in the circumferential direction UR around the line 5 closed trained. The bridge 60 therefore forms a material web that provides mechanical stability for the intermediate plate 16 guaranteed. A radial strength S2 of the jetty 60 is preferably smaller than an inside diameter of the test line DI5 Test lead 28 . Will the test lead 28 on the jetty 60 arranged, is a partial cross-section of the test lead 28 with the first groove 36 and / or the second groove 56 tied together. The test line is particularly preferably adjacent 28 to the jetty 60 , with the first groove 36 by means of the test lead 28 fluid-conducting with the second groove 56 connected is. The test line is also preferably adjacent 28 to the jetty 60 so that a fluid-conducting connection between the test line 28 and the pipe volume 20th as well as between the test lead 28 and the reveal volume 22nd is formed. It should be understood that the first groove 36 and the second groove 56 also in the circumferential direction RU can be arranged offset to one another, the web 60 then in the circumferential direction RU between mutually facing groove sides of the grooves 36 , 56 extends. It can also be provided that the intermediate plate 16 according to the second embodiment, a recording 42 for an end piece 42 the test lead 28 has, reference being made here in full to the above description of the first exemplary embodiment. The recording 42 can also be in the jetty 60 extend.

10 illustrates a method for sealing one of a conduit 5 riddled opening 3 . In a first step S1 becomes the second tension ring 12b provided and the second sealing body 2 B on the one with the second tension ring 12b connected clamping bolts 14th put on. In a second step S2 becomes the intermediate plate 16 in the line direction to the second sealing body 2 B attached, the in the radial direction RR running first groove 34 on one of the second clamping body 2 B facing away from the intermediate plate 16 is arranged. It should be understood that in the case of an intermediate plate 16 according to the second embodiment, an orientation of the intermediate plate 16 can be chosen freely, since the first groove 36 and the second groove 56 in line direction LR completely through the intermediate plate 16 extend. Then the test lead 28 in a third step S3 in the first sealing body 2a used. In a fourth step S4 becomes the first sealing body 2a together with the test lead 28 in the direction of the line to the intermediate plate 16 attached, with the end piece 42 the test lead 28 in the recording 46 the intermediate plate 16 is recorded. In a fifth step S5 becomes a first tension ring 12a in line direction LR to the first sealing body 2a scheduled. Then nuts can 15th on the clamping bolts 14th be unscrewed, the device 1 is not yet braced. The device will then 1 over one end of the line 5 and into the opening 3 be pushed so that the clamping rings 12a , 12b who have favourited sealing body 2a , 2 B and the intermediate plate 16 around the line 5 are arranged around (sixth step S6 ). Individual components of the device 1 can preferably also separately from each other on the line 5 can be pushed on and / or inserted into the opening. In a seventh step S7 become the nuts 15th further on the clamping bolts 14th screwed, reducing the distance between the tension rings 12a , 12b reduced and the sealing body 2a , 2 B be braced. As a result of the tensioning, the sealing bodies lay down 2a , 2 B sealing to the line 5 and the reveal 7th the opening 3 on, with the intermediate plate 16 the test volume 18th keeps free. In an eighth step S8 becomes a pressure generator with the first end 40a the test lead 28 connected and the test volume 18th by means of the test lead 28 and the deepening 34 applied with a test pressure. When the test pressure in the test volume 18th is constant can in a ninth step S9 a sealing closure of the opening 3 be determined. The pressure generating device preferably has a pressure measuring device for this purpose. However, it can also be provided that the test lead 28 has a connection for a pressure measuring device and / or a pressure measuring device. In a tenth step S10 becomes the pressure generating means from the first end 40a the test lead 18th removed and the first end 40a locked.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202011104521 U1 [0005, 0006]
• US 2004/0103600 A1 [0006]

Claims (23)

Having device (1) for sealing a line bushing through an opening (3) in a wall area a first sealing body (2a) which can be arranged around the line and has a first inner surface (4a) for placing on the line (5) and a first outer surface (6a) for bringing into contact with a reveal (7) delimiting the opening, a second sealing body (2b) which can be arranged around the line (5) and has a second inner surface (4b) for placing on the line (5) and a second outer surface (6b) for bringing it into contact with the reveal (7), the second sealing body ( 2b) is arranged offset in a line direction (LR) to the first sealing body (2a), a tensioning device (8) for tensioning the first sealing body (2a) and the second sealing body (2b), so that the first sealing body (2a) with the first inner surface (4a) sealingly on the line (5) and with the first outer surface (6a) ) rests sealingly on the reveal (7) and so that the second sealing body (2b) rests sealingly with the second inner surface (4b) on the line (5) and sealingly rests on the reveal (7) with the second outer surface (6b), wherein the clamping device (8) has two mutually variable clamping bodies (10a, 10b), the first sealing body (2a) and the second sealing body (2b) being arranged between the clamping bodies (10a, 10b), an intermediate plate (16) which is arranged between the first sealing body (2a) and the second sealing body (2b) and is designed to keep a test volume (18) free between them, which is a line volume (20) and bounded by the line (5) comprises a soffit volume (22) bounded by the soffit (7), and a test line (28) which extends through the first sealing body (2a), wherein the intermediate plate (16) can be arranged around the line (5) and is designed to be closed in the circumferential direction (UR) around the line (5), and wherein the intermediate plate (16) has at least one recess (34) which forms at least a portion of a fluid-conducting connection between the test line (28) and the line volume (20) and / or the reveal volume (22). Device (1) according to Claim 1 , wherein the recess (34) is designed as a first groove (36) with a first groove depth (T1). Device (1) according to Claim 2 , wherein the first groove (36) runs transversely to a circumferential direction (UR) on the intermediate plate (16). Device (1) according to Claim 3 , wherein the first groove (36) connects the line volume (20) and the soffit volume (22) in a fluid-conducting manner. Device (1) according to Claim 3 or 4th , wherein the first groove depth (T1) is a maximum of 0.5 of a thickness (S) of the intermediate plate (16), measured in the line direction (LR). Device (1) according to Claim 2 , wherein the first groove (36) runs transversely to a radial direction (RR) on the intermediate plate (16). Device (1) according to Claim 6 , further comprising a second groove (56) which runs transversely to a radial direction (RR) on the intermediate plate (16). Device (1) according to Claim 7 , wherein the second groove (56) forms at least a portion of a fluid-conducting connection between the test line (28) and the line volume (20) and / or the soffit volume (22). Device (1) according to Claim 7 or 8th wherein a web (60) is formed between a first groove base (44) of the first groove (36) and a second groove base (58) of the second groove (56). Device (1) according to one of the preceding Claims 2 until 9 , wherein a groove width (B1) of the first groove (36), which is transverse to a groove longitudinal direction (LRN) of the first groove (36) and to the first groove depth (T1), is smaller than a test line diameter (DA3) of the test line (28) . Device (1) according to one of the preceding claims, wherein the test line (28) extends through a test bore (30) of the first sealing body (2a), a test bore diameter (DI3) of the test bore (30) in a relaxed state, in which the first sealing body (2a) and the second sealing body (2b) are not tensioned by means of the clamping device (8), is greater than a corresponding test line diameter (DA3) the test lead (28), and wherein the first sealing body (2a) is designed to apply sealingly to the test line (28) as a result of the tensioning. Device (1) according to one of the preceding claims, wherein the test line (28) has an end piece (42) which is inserted in a form-fitting manner between the first sealing body (2a) and the intermediate plate (16). Device (1) according to Claim 12 , wherein the end piece (42) is designed as a radial shoulder (43). Device (1) according to one of the Claims 12 or 13th wherein at least one dimension of the end piece (42), which is transverse to a longitudinal direction (LRN) of the first groove (36), is greater than the groove width (B1) of the first groove (36). Device (1) according to one of the preceding claims, wherein the intermediate plate (16) has a receptacle (46) for receiving the end piece (42). Device (1) according to Claim 15 wherein the receptacle (46) is a receptacle recess (47) which adjoins the recess (34) in the line direction (LR) and / or extends in sections into the recess (34). Device (1) according to one of the Claims 12 until 16 , the test line (28) having a first line element (51) and the end piece (42) being a second line element (53) which is integrally molded onto the first line element (51). Device (1) according to one of the preceding claims, wherein the test line (28) has a coupling element (38) for connecting a pressure generating device. Device (1) according to one of the preceding claims, wherein the test line (28) has a valve or is designed as a valve. Device (1) according to one of the preceding claims, wherein the test line (28) is designed as a hose or pipe, preferably a plastic hose (29) or a plastic pipe. Device (1) according to one of the preceding claims, wherein the intermediate plate (16) is made at least in sections from a plastic which has a compression resistance that is greater than a corresponding first compression resistance of the first sealing body (2a) and a corresponding second compression resistance of the second sealing body (2b). Device (1) according to one of the preceding claims, wherein the intermediate plate (16) is produced by means of an injection molding process and / or a stamping process. Use of a device (1) according to one of the Claims 1 until 22nd for sealing an opening (3) in a wall through which a line (5) passes.

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