WO2021209588A1

WO2021209588A1 - Line bushing which can be tested

Info

Publication number: WO2021209588A1
Application number: PCT/EP2021/059879
Authority: WO
Inventors: Oliver SCHEPPACH; Valentin WILHAUK
Original assignee: Uga System-Technik Gmbh & Co. Kg
Priority date: 2020-04-16
Filing date: 2021-04-16
Publication date: 2021-10-21
Also published as: DE102020110420A1

Abstract

The invention relates to a device (1) for sealing a line bushing, having: a first sealing body (2a); a second sealing body (2b); a clamping unit (8) for clamping the first sealing body (2a) and the second sealing body (2b) such that a first inner surface (4a) and a second inner surface (4b) sealingly lie against a line (5) and a first outer surface (6a) and a second outer surface (6b) sealingly lie against a reveal (7) which delimits an opening (3); an intermediate plate (16) which is designed to keep free a test volume (18) which comprises a line volume (20) and a reveal volume (22); and a test line (28). The intermediate plate (16) can be arranged around the line (5) and is closed in the circumferential direction (UR) around the line (5), wherein the intermediate plate (16) has at least one depression (34) which forms at least one portion of a fluid-conducting connection between the test line (28) and the line volume (20) and/or the reveal volume (22).

Description

Testable cable entry

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 conduit and with the first outer surface sealingly on the reveal, and so that the second sealing body rests sealingly with the second inner surface on the conduit and with the second outer surface sealingly a n 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 is designed for this purpose, between them to keep a test volume free, which comprises a line volume bounded by the line and a soffit volume bounded by the soffit, and a test line which extends through the first sealing body. The invention also relates to a method for sealing an opening through which a line passes. 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 base plate or building wall and with the sealing of the device against the reveal of the wall delimiting the opening and the line passed 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 tensioning device with which the sealing body is tensioned 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, there is a sealing function from the sealing body in the direction of the line and the reveal causes 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.

DE 202011 104 521 U1 discloses a device for sealing a line bushing 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 inside 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, which increases assembly time and thus assembly costs. 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 line direction, so that flatness of the intermediate plate transversely to the line direction is not guaranteed, which can result in further problems when checking the sealing closure of the opening. From US 2004/0103600 A1 a device with sealing blocks is known, which is provided for sealing a line leadthrough 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 direction of the line, a space can be kept free between two block segments arranged one behind the other in the direction of the line, to which a test pressure can be applied. 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 dividing the spacers transversely to the longitudinal direction is that, analogous to the device in DE 20 2011 104 521 U1, the sealing blocks penetrate the gap formed between two spacers and can deform unevenly, which makes sealing of the opening difficult or impossible . 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 above-mentioned device in 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 closed in the circumferential direction around the line and therefore has an improved resistance to deformation compared to the known devices. In contrast to an embodiment 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. Particularly preferably, the through opening 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. The test line also 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 scope of the sy- Energy effect achieves that arranging 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. Preferably, the recess can also be designed as one or more holes 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 it can 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, 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, the circumferential stability increasing as the groove depth decreases. 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, with 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. In an analogous manner, 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 tensioned by means of the tensioning device is greater than the corresponding test lead diameter of the test line, and where the first sealing body is designed to apply sealingly to 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 those 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 resistant to compression than the sealing body. When the sealing body is braced, the Between the plate due to the greater resistance to compression not at all or only to a lesser extent than the first sealing body and the second sealing body. An expansion of the intermediate plate in the radial direction can thus be avoided and the test volume can be kept free. 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.

According to a second aspect, the invention achieves the object described at the outset with a method for sealing an opening through which a line passes, comprising the steps: arranging a first sealing body around the line; Placing an intermediate plate in a line direction on the first sealing body, the intermediate plate having a first recess on a side facing the first sealing body and being 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 Place the second sealing body sealingly against 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 one of the soffit of the opening limited reveal volume 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, determination of a tight closure of the opening if the test pressure does not exceed a prescribed pressure loss limit value.

In a third 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 method according to the second aspect of the invention and the use of the device according to the third aspect of the invention 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 the use, reference is made in full to the above description of the device. 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 are directly recognizable from the drawings, the relevant status of Technology referenced. It must be taken into account here that various modifications and changes relating to the form and the detail of an embodiment can be made without deviating 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:

FIG. 1 shows a perspective view of a first exemplary embodiment of a device for sealing a line bushing, a first sealing body and a first clamping body being shown partially broken away;

FIG. 2 shows a sectional illustration of the device according to the first exemplary embodiment;

FIG. 3 shows a sectional illustration of the device according to the first exemplary embodiment, the device being inserted and braced in an opening in a wall area;

FIG. 4 shows a sectional illustration of the device according to the first exemplary embodiment, the sectional plane being rotated by 90 ° with respect to the illustration according to FIG. 2;

FIG. 5 shows a detail of the area provided with a marking in FIG. 1; FIG. 6a shows a schematic plan view of a section of an intermediate plate of the device according to the first exemplary embodiment;

FIG. 6b shows a schematic sectional view of the view according to FIG. 6a; FIG. 7 shows a sectional illustration of the device according to the first exemplary embodiment, the device being inserted into a stepped opening in a wall area;

FIG. 8 shows a sectional view of the device according to the first exemplary embodiment, the device being inserted and clamped in a pot,

FIG. 9 shows a plan view of an intermediate plate of a device according to a second exemplary embodiment; and in

FIG. 10 shows a schematic flow diagram for a first preferred exemplary embodiment of the method according to the second aspect of the invention. FIG. 1 shows a device 1 for sealing and / or partitioning off a line bushing through an opening 3 (not shown in FIG. 1, cf. has a first sealing body 2a, which can be arranged around the line 5, and a second sealing body 2b. The first sealing body 2a has a first inner surface 4a for application to the line 5, not shown in Figure 1, and a first outer surface 6a for bringing into contact with a reveal 7, also not shown (Fig. 3), which delimits the opening 3 in the wall area. The soffit 7 is a surface of the wall facing the opening 3, which corresponds to the lateral surface of a cylinder in the case of a round opening 3. In an analogous manner, the second sealing body 2b comprises a second inner surface 4b for placing on the line and a second outer surface 6b for bringing it into contact with the reveal. In this exemplary embodiment, the first sealing body 2a and the second sealing body 2b are designed as closed rings, each with a through opening for leading the line 5 through. However, it can also be provided that the sealing bodies 2a, 2b have several through openings for leading through several lines. Furthermore, the sealing bodies 2a, 2b can also be non-circular, in particular rectangular.

The device 1 further comprises a tensioning device 8 for tensioning the first sealing body 2a and the second sealing body 2b, the sealing bodies 2a, 2b being compressed by means of the tensioning device 8 essentially parallel to a center axis A in the line direction LR. As a result of the upsetting in the line direction LR, the sealing bodies 2a, 2b expand in an essentially radial direction RR transversely to the line direction LR. The sealing bodies 2a, 2b are preferably formed from a flexible material, particularly preferably rubber. When braced, the inner surfaces 4a, 4b of the sealing body 2b are sealingly on the line 5, and the outer surfaces 6a, 6b of the sealing bodies 2a, 2b sealingly on the reveal 7 of the opening 3 of the wall (Fig. 3). For tensioning the sealing bodies 2a, 2b, the tensioning device 8 has two tensioning bodies 10a, 10b, which can be varied in terms of their spacing from one another. The sealing bodies 2a, 2b are arranged in the line direction LR between the clamping bodies 10a, 10b. To change the distance and to tighten the sealing bodies 2a, 2b, several tensioning elements 12 in the form of tensioning bolts 14 connecting the tensioning bodies 10a, 10b to one another are provided. Here the clamping bolts 14 are integrally connected to the second clamping body 10b (FIG. 2). For example, the clamping bolts 14 can be welded to the second clamping body 10b. The tensioning bolts 14 extend from the second tensioning body 10b through the second sealing body 2b, an intermediate plate 16, the first sealing body 2a and the first tensioning body 10a, ends 13 of the tensioning bolts 14 protruding from the first tensioning body 10a. The ends 13 of the clamping bolts 14 are also provided with threads for screwing on nuts 15. By screwing the nuts 15 onto the tensioning bolts 14, a relative distance between the first tensioning body 10a and the second tensioning body 10b can be reduced, which results in a tensioning force on the sealing bodies 2a, 2b. It can also be provided that the second clamping body

10b has through bores for passing through the clamping bolts 14, the clamping bolts 14 then preferably being provided with nuts 15 at both ends or having screw heads on one side. The clamping bodies 10a, 10b are designed as clamping rings 12a, 12b, 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 arranged between the first sealing body 2a and the second sealing body 2b. In order to be able to show details of the intermediate plate 16, the first sealing body 2a and the first clamping ring 12a are shown in FIG. 1 with an interruption. However, it should be understood that the first sealing body 2a and the first clamping ring 12a are designed to be closed in the circumferential direction. Like the one shown in FIG

As a sectional view of the device 1 shows, the intermediate plate 16 is preferably provided with through bores 18 for the clamping bolts 14 to pass through. The intermediate plate 16 can be arranged around the line 5 analogously to the clamping bodies 2a, 2b. An intermediate plate outer diameter DA1 of the intermediate plate 16 in a relaxed state of the device 1 is preferably smaller than a corresponding sealing body outer diameter DA2 of the sealing bodies 2a, 2b. Likewise preferably, an intermediate plate inner diameter DU of the intermediate plate 16 in a relaxed state is greater than a corresponding sealing body inner diameter DI2 of the sealing bodies 2a, 2b. However, it can also be provided that the intermediate plate outer diameter DA1 corresponds to the sealing body outer diameter DA2, and / or that the intermediate plate inner diameter DU corresponds to the sealing body inner diameter DI2. The intermediate plate 16 is preferably formed from a material which, compared to the material of the sealing bodies 2a, 2b, 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 bodies 2a, 2b. As explained at the beginning, the first sealing body 2a and the second sealing body 2b, when they are braced by means of the tensioning device 8, lie sealingly against the line 5 and the reveal 7 of the opening 3, the intermediate plate 16 keeping a test volume 18 free (Fig. 3).

Preferably, the intermediate plate 16 does not expand or expands to a lesser extent than the sealing bodies 2a, 2b when it is braced, the test volume 18 being kept free. Furthermore, the geometry of the intermediate plate 16, in particular the intermediate plate inner diameter DU and an intermediate plate outer diameter DA1, can be adapted to keep the test volume free. The test volume 18 has a line volume 20 which is delimited by the line 5, and a soffit volume 22 which is delimited by the soffit 7. The line volume 20 is essentially formed between the line 5 and a radially inner surface 24 of the intermediate plate 16. In an analogous manner, the reveal volume 22 is essentially defined between a radially outer surface 26 of the intermediate plate 16 and the reveal 7 of the opening 3.

As the further sectional view of the first exemplary embodiment shown in FIG. 4 shows, a test line 28 of the device 1 extends through the first sealing body 2a. In order to pass through the test line 28, the first sealing body 2a has a test bore 30, a test bore diameter DI3 of the test bore 30 being greater than a corresponding test line diameter DA3 of the test line 28 first sealing body 2a can be achieved. During the tensioning, the first sealing body 2a preferably lies against the test line 28 in a sealing manner.

The test line 28 extends from the intermediate plate 16 to a first side 32a of the device 1, the test line 28 here being designed to protrude from the first clamping ring 12a. However, it can also be provided that the test line 28 terminates flush with the first clamping body 10a. In this exemplary embodiment, the test line 28 is designed as a plastic hose 29, as a result of which a particularly simple and inexpensive construction is achieved. Likewise preferably, the test line 28 can also be designed as a pipe, in particular a plastic pipe. Furthermore, the test line 28 can preferably also be designed as a metal pipe or metal hose. The test line 28 is preferably adapted to provide a fluid-conducting connection between a first end 40a of the test line 28 and a second end 40b of the test line 28 in a tensioned state.

FIG. 5 shows an enlarged illustration of the area surrounded by the marking M in FIG. As the detailed illustration shows, the intermediate plate 16 in this exemplary embodiment has a recess 34 which forms a fluid-conducting connection between the test line 28 and the test volume 18. The recess 34 is designed as a first groove 36 which runs transversely to the circumferential direction UR on the intermediate plate 16. A groove longitudinal direction LRN of the first groove 36 runs radially, so that the first groove 36 extends in the radial direction RR on the intermediate plate 16. The first groove 36 therefore connects both the line volume 20 and the soffit volume 22 to the test line 28. A groove length LN of the first groove 36 corresponds to a radial width of the intermediate plate 16 (FIG. 6b). However, it can also be provided that the first groove 36 is a stepped groove which starts from the radially inner side 24 or the radially outer side 26 and ends in the intermediate plate 16. A first groove depth T1 of the first groove 36 corresponds to a depth TV of the recess 34 (FIG. 6b). However, the first groove 36 can also extend in any desired orientation from the radially inner side 24 to the radially outer side 26 of the intermediate plate 16. For example, the first groove 36 can run tangentially to a circle, the center of which lies essentially on the central axis A. According to this exemplary embodiment, the first groove 36 has 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 corresponds to 0.5 of a thickness S1 of the intermediate plate 16, measured in the line direction LR. In this way, a fluid-conducting connection can be achieved between the line volume 20 and the reveal volume 22, while stability of the intermediate plate 16 is ensured. Due to the fluid-conducting connection, the test volume 18 can be pressurized by means of the test line 28. For this purpose, a pressure generating device (not shown) can be connected to the test line 28. If a pressure remains constant within the test volume 18, a sealing closure 1 of the opening 3 is ensured by means of the first sealing body 2a and the second sealing body 2b.

To connect the pressure generating device, the test line 28 preferably has a coupling element 38 which is designed to be connected to a line of the pressure generating device without tools. The coupling element 38 is preferably a hose connector 39. The coupling element 38 is particularly preferably not by means of a hose connector Shown closure can be closed, which is removed before connecting the pressure generation direction. However, it can also be provided that the test line 28 is or has a valve (not shown). Furthermore, the test line 28 can preferably also be designed to be open at a first end 40a opposite the intermediate plate 16. After checking the sealing installation of the device 1, the end 40a can then be closed by means of a suitable clamp (not shown). Furthermore, one end 40a of the test line 28 can also be permanently closed, for example by gluing or melting. This is particularly advantageous if the test line 28 is designed as a plastic hose 29, since a closed end 40a can be separated using simple means to restore a fluid-conducting connection.

At a second end 40b of the test line 28, which faces the intermediate plate 16, an end piece 42 is provided here, which is designed as a radial shoulder 43. In Fig. 6a, an end piece diameter DA4 of the end piece 42 is shown with broken lines, the end piece diameter DA4 being larger than the test bore diameter DI3 of the test bore 30. The end piece 42 then preferably prevents the test line 28 from being pulled out of the first sealing body 2a, especially if it is not is tense. The end piece 42 is preferably integrally formed on the test line 28 in a materially bonded manner. The end piece 42 is particularly preferably a piece of a plastic line which is glued to the test line 28 and / or fused to the test line 28. The tail diameter

DA4 of the end piece 42 is larger than a groove width B1 of the first groove 36. An entry of the test line 28 into the first groove 36 can be prevented by an end piece 42 which is larger than the groove width B1 of the first groove 36. This prevents the end piece 42 from sealingly abutting a first groove base 44 of the first groove 36 and at least partially closing the test line 28. Furthermore, a fluid-conducting connection between the line volume 20 and the reveal volume 22 could be interrupted by the test line 28 entering the first groove 36.

The intermediate plate 16 preferably has a receptacle 46 for receiving the end piece 42. The receptacle 46 is designed as a receptacle recess 47 in the intermediate plate 16, which adjoins the first groove 36. A receiving depth TA of the receptacle 46 is preferably greater than a corresponding length L2 of the end piece 42, as a result of which the end piece 42 is prevented from protruding from the intermediate plate 16. It can also be provided that the receiving depth TA of the receiving 46 corresponds to the length L2 of the end piece 42 and / or that the test bore 30 is a stepped bore with a section for receiving the end piece 42. Here is the receptacle 46 as a blind hole bore 48 executed, wherein a blind hole diameter DI4 of the blind hole 48 is larger than the end piece diameter DA4 of the end piece 42. Preferably, a value of the blind hole diameter DI4 can correspond to a value of the end piece diameter DA4. The receptacle 46 enables a particularly simple arrangement of the end piece 42 on the intermediate plate 16, whereby the risk of incorrect assembly without a fluid-conducting connection between test volume 18 and test line 28 is reduced. An arrangement of the clamping bolts 14 or associated through holes in the first clamping body 2a and the intermediate plate 16 is particularly preferably selected such that a clear assignment of the receptacle 42 and the test line 28 is ensured. However, it can also be provided that the clamping bolts 14, as in this exemplary embodiment, are regularly distributed in the circumferential direction UR of the device 1. At a first transition 49a to the line volume 20 and a second transition 49b to the reveal volume 22, the first groove 36 is rounded. The first transition 49a and / or the second transition 49b can, however, preferably also have a sharp-edged design and / or be provided with a bevel.

The second clamping ring 12b here has a plurality of spacers 50, which are formed protruding on a second side 32b of the device 1 in the line direction. By means of the spacers 50, the device 1 can be supported and / or spaced on a shoulder 52 of the opening 3 (FIG. 7) or an end plate (not shown) delimiting the opening 3, as a result of which the device 1 slips out of the opening 3 can be prevented. The spacers 50 are preferably cohesively connected to the second clamping ring 12b. For example, the spacers 50 can be welded to the second clamping ring 12b. However, it can also be provided that the spacers 50 have an external thread and are screwed into corresponding threaded bores of the second clamping ring 12b. Furthermore, the clamping bolts 14 can preferably protrude on the second side 32b of the device 1 and advantageously serve both to support the device 1 and to clamp the sealing bodies 2a, 2b.

The spacers 50 provided on the second clamping ring 12b are particularly advantageous when the device 1, as shown in FIG. 8, is inserted into a pot 62. Of the

Pot 62 can, for example, be inserted into an opening 3, an inner wall 64 of the pot 62 then forming the reveal 7. An end plate 66 of the pot 62 is here welded to a cylinder section 68 of the pot 62 and has a through opening 70 which is provided for a support tube 72 to pass through. The support tube 72 extends through the through opening 70 and is received in the first line 5. In this In the exemplary embodiment, the support tube 72 is welded to the base plate 66 and is used to guide the first line 5, an assembly of the line 5 in the pot 62 being facilitated. When braced, the first sealing body 2a and the second sealing body 2b lie tightly against the line 5 and press the first line 5 against the support tube 72 in such a way that a sealing contact is also ensured between the line 5 and the support tube 72 received therein. The spacers 50 ensure that a distance A is maintained between the second clamping ring 12b and the end plate 66, whereby a tight seal can be ensured even if the line 5 is not completely inserted into the pot 62, for example due to improper assembly. is pushed. Furthermore, it is achieved that the forces occurring when the sealing bodies 2a, 2b are braced do not act on an end section 74 of the line 5, as a result of which the end section 74 could be deformed.

Figure 9 shows an intermediate plate 16 according to a second embodiment. The intermediate plate 16 according to the second embodiment can be used in a device 1, the other components of which are analogous to those according to the first

Embodiment are formed. The first recess 34 has a first groove 36 with a groove longitudinal direction LRN which runs transversely to a radial direction RR of the intermediate plate. The first groove depth T1 of the first groove 36 is determined in the radial direction RR. Here, the longitudinal direction LRN of the first groove 36 runs parallel to the line direction LR, which in FIG. 9 is perpendicular to the plane of the drawing. However, it can also be provided that a longitudinal direction LRN of the first groove 36 encloses an angle with the line direction LR. The first groove 36 runs on the radially inner surface 24 of the intermediate plate 16. On the radially outer surface 26, the recess 34 also has a second groove 56, which likewise extends in a substantially radial direction RR on the intermediate plate 16. A value of the second groove depth T2 of the second groove 56 is equal to a value of the first groove depth T 1 of the first groove 36. However, it can also be provided that the first groove depth T1 of the first groove 36 is greater and / or smaller than the second Groove depth T2 of the second groove 56. A web 60 is formed between the first groove base 44 of the first groove 36 and a second groove base 58 of the second groove 56. By means of the web 60, the intermediate plate 16 is designed to be closed in the circumferential direction UR around the line 5. The web 60 therefore forms a material web which ensures mechanical stability of the intermediate plate 16. A radial thickness S2 of the web 60 is preferably smaller than an internal test line diameter DI5 of the test line 28. If the test line 28 is arranged on the web 60, a partial cross section of the test line 28 is connected to the first groove 36 and / or the second groove 56. Particularly preferably, the test line 28 adjoins the web 60, the first groove 36 being also fluid-conducting by means of the test line 28 the second groove 56 is connected. Furthermore, the test line 28 preferably adjoins the web 60, so that a fluid-conducting connection is formed between the test line 28 and the line volume 20 and between the test line 28 and the reveal volume 22. It should be understood that the first groove 36 and the second groove 56 can also be arranged offset from one another in the circumferential direction RU, the web 60 then extending in the circumferential direction RU between groove sides of the grooves 36, 56 facing one another. It can also be provided that the intermediate plate 16 according to the second exemplary embodiment has a receptacle 42 for an end piece 42 of the test line 28, reference being made here in full to the above description of the first exemplary embodiment. The receptacle 42 can also extend into the web 60.

FIG. 10 illustrates a method for sealing an opening 3 through which a line 5 passes. In a first step S1, the second clamping ring 12b is provided and the second sealing body 2b is placed on the clamping bolts 14 connected to the second clamping ring 12b. In a second step S2, the intermediate plate 16 is attached to the second sealing body 2b in the line direction, the first groove 34 running in the radial direction RR being arranged on a side of the intermediate plate 16 facing away from the second clamping body 2b. It should be understood that in the case of an intermediate plate 16 according to the second exemplary embodiment, an orientation of the intermediate plate 16 can be freely selected, since the first groove 36 and the second groove 56 extend completely through the intermediate plate 16 in the line direction LR. The test line 28 is then inserted into the first sealing body 2a in a third step S3. In a fourth step S4, the first sealing body 2a is attached to the intermediate plate 16 together with the test line 28 in the line direction, the end piece 42 of the test line 28 being received in the receptacle 46 of the intermediate plate 16. In a fifth step S5, a first clamping ring 12a is attached to the first sealing body 2a in the line direction LR. Then nuts 15 can be screwed onto the clamping bolts 14, the device 1 not yet being clamped. The device 1 is then pushed over one end of the line 5 and into the opening 3 so that the clamping rings 12a, 12b, the sealing bodies 2a, 2b and the intermediate plate 16 are arranged around the line 5 (sixth step S6). Individual components of the device 1 can preferably also be pushed onto the line 5 separately from one another and / or inserted into the opening. In a seventh step S7, the nuts 15 are screwed further onto the clamping bolts 14, whereby the distance between the clamping rings 12a, 12b is reduced and the sealing bodies 2a, 2b are clamped. As a result of the tensioning, the sealing bodies lay down 2a, 2b sealingly to the line 5 and the reveal 7 of the opening 3, the intermediate plate 16 keeping the test volume 18 free. In an eighth step S8, a pressure generating device is connected to the first end 40a of the test line 28 and a test pressure is applied to the test volume 18 by means of the test line 28 and the recess 34. If the test pressure in the test volume 18 is constant, a sealing closure of the opening 3 can be determined in a ninth step S9. The pressure generating device preferably has a pressure measuring device for this purpose. However, it can also be provided that the test line 28 has a connection for a pressure measuring device and / or a pressure measuring device. In a tenth step S10, the pressure generating device is removed from the first end 40a of the test line 18 and the first end 40a is closed.

Claims

Expectations

1. Device (1) for sealing a line bushing through an opening (3) in a wall area, comprising a first sealing body (2a) which can be arranged around the line and has a first inner surface (4a) for contact with 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 contact with the line (5) and a second outer surface ( 6b) for bringing into contact with the reveal (7), wherein 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) sealingly on the reveal (7), and so that the second Sealing body (2b) mi t the second inner surface (4b) rests sealingly on the line (5) and with the second outer surface (6b) sealingly on the reveal (7), the tensioning device (8) having two tensioning bodies (10a, 10b) which can be changed at a distance from one another, wherein the first sealing body (2a) and the second sealing body (2b) is 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 designed for this purpose is to keep a test volume (18) free between them, which comprises a line volume (20) delimited by the line (5) and a reveal volume (22) delimited by the reveal (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) has at least one Ab Section of a fluid-conducting connection between the test line (28) and the line volume (20) and / or the reveal volume (22).

2. Device (1) according to claim 1, wherein the recess (34) is designed as a first groove (36) with a first groove depth (T1).

3. Device (1) according to claim 2, wherein the first groove (36) runs transversely to a circumferential direction (UR) on the intermediate plate (16).

4. 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. 5. Device (1) according to claim 3 or 4, 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).

6. Device (1) according to claim 2, wherein the first groove (36) extends transversely to a radial direction (RR) on the intermediate plate (16). 7. The 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).

8. The 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 reveal volume (22). 9. Device (1) according to claim 7 or 8, 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).

10. Device (1) according to one of the preceding claims 2 to 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 lead diameter (DA3) of the

Test lead (28).

11. 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 tensioning device (8), is greater than a corresponding test line diameter (DA3) of the test line (28), and the first sealing body (2a) to it is designed to apply sealingly to the test line (28) as a result of the tensioning. 12. 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).

13. The device (1) according to claim 12, wherein the end piece (42) is designed as a radial shoulder (43). 14. Device (1) according to one of claims 12 or 13, wherein at least one dimension of the end piece (42), which is transverse to a groove longitudinal direction (LRN) of the first groove (36), is greater than the groove width (B1) of the first groove (36) is.

15. Device (1) according to one of the preceding claims, wherein the intermediate plate (16) has a receptacle (46) for receiving the end piece (42).

16. The device (1) according to claim 15, wherein the receptacle (46) is a receptacle (47) which adjoins the recess (34) in the line direction (LR) and / or extends into the recess (34) in sections extends.

17. Device (1) according to one of claims 12 to 16, wherein the test line (28) has a first line element (51) and the end piece (42) has a second line element

(53) which is integrally formed on the first line element (51).

18. 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.

19. Device (1) according to one of the preceding claims, wherein the test line (28) has a valve or is designed as a valve.

20. 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.

21. 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).

22. 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.

23. A method (100) for sealing an opening (3) through which a line (5) passes, comprising the steps:

Arranging a first sealing body (2a) around the line (5);

Applying an intermediate plate (16) in a line direction (LR) to the first sealing body (2a), the intermediate plate (16) on one of the first sealing body (2a) facing side has a first recess (34) and is closed in the circumferential direction (UR) around the line (5);

Arranging a second sealing body (2b) around the line (5) and applying the second sealing body (2b) to the intermediate plate (16); - Attachment of mutually variable clamping bodies (10a, 10b) one

Clamping device (8) on the first sealing body (2a) and the second sealing body (2b), the first sealing body (2a) and the second sealing body (2b) being arranged between the clamping bodies (10a, 10b); and

Clamping the first sealing body (10a) and the second sealing body (10b) by means of the tensioning device (8); a first inner surface (4a) of the first sealing body (2a) and a second inner surface (4b) of the second sealing body (2b) sealingly abut the line (5), and a first outer surface (6a) of the first sealing body (2a ) and a second outer surface (6b) of the second sealing body (2b) sealingly against a reveal (7) delimiting the opening (3), and

Keeping a test volume (18) free between the first sealing body (2a) and the second sealing body (2b) by the intermediate plate (16), the recess (34) at least a section of a fluid-conducting connection between a line volume (5) delimited by the line (5). 20) and a reveal volume (22) of the test volume (18) bounded by the reveal (7) of the opening (3).

24. The method of claim 23, further comprising the steps of:

Applying a test pressure to the test volume (18) by means of a pressure generating device connected to the test line (28); and - determining a sealing closure of the opening (3) when the test pressure im

Test volume (18) is constant.

25. Use of a device (1) according to one of claims 1 to 22 for sealing an opening (3) in a wall through which a line (5) passes.