Large-diameter in-line sealing device including sealing plate

Abstract

The present invention provides a sealing plate (2) movable in a plane (P) between a sealing position for blocking the flow of a fluid and a flow position for allowing the flow of said fluid; a body (5) including a first half (6) and a second half (7) respectively arranged on either side of said plane (P); a clamping / disengaging system (10) for clamping and disengaging at least one clamping element (11) relative to said sealing plate (2); The present invention relates to an in-line sealing device (1) including: According to the present invention, the clamping / separating system (10) includes a first thrust ring (13), a second thrust ring (14), and at least one assembly (15) elastically deformable by compression, the assembly (15) including a coil spring (16) and a guide shaft (17), the at least one assembly (15) being disposed between the first thrust ring (13) and the second thrust ring (14).

Description

Technical Field

[0001] The present invention generally relates to the field of in-line seal devices that are intended to be placed on pipes or ducts and that allow fluid to flow or be stopped within the pipe or duct by means of a sealing plate.

Background Art

[0002] In known methods, such a sealing plate can be translatable or rotatable relative to the body of the in-line seal device. Such in-line seal devices are described in particular in the documents of French Patent No. 3041407, French Patent No. 3051878, and French Patent No. 3080665.

[0003] Known in-line seal devices include clamping / unclamping means for simultaneously clamping and conversely separating a first half and a second half with respect to the sealing plate.

[0004] Such in-line seal devices are designed, for example, for pipes with small and average dimensions having a fluid flow cross-section of 1300 mm (millimeters) or less in diameter. These in-line seal devices generally require that the pipe be elastically deformable by clamping / unclamping means manually operated by an operator.

[0005] However, for pipes with large dimensions, for example, having a fluid flow cross-section exceeding 1300 mm (millimeters) in diameter, other types of in-line seal devices have been developed, which do not require an elastically deformable pipe.

[0006] This type of inline sealing device for large-dimension pipes includes a clamp / release system for clamping and, conversely, pulling away at least one clamping component that can move relative to the body according to at least one degree of freedom for translational movement. Such degrees of freedom for the translational movement of one or more clamping components are directed in a translational direction parallel to the direction of fluid flow in the body of the sealing device.

[0007] Such a body includes a first half and a second half, which remain stationary relative to each other, while the clamping component moves translationally to clamp or release the sealing plate as needed.

[0008] One or more clamping components are positioned between the sealing plate and one of the halves, which will be referred to below as the first half for simplicity. Of course, these movable clamping components can also be positioned between the sealing plate and the second half.

[0009] In particular, the clamp / release system may include a torsionally deformable, loaded U-shaped spring to transmit compressive force to one or more clamping components in a translational direction-dependent manner.

[0010] However, if one of the U-shaped springs breaks, the inline sealing device must be removed from the duct, completely disassembled, and the damaged spring replaced.

[0011] Such maintenance work is particularly complex and time-consuming, considering the size and considerable weight of this type of inline sealing device.

[0012] References: French Patent No. 1357657, German Patent No. 2227386, and German Patent No. 2719164 disclose gas valves for large cross-section pipes, including stop valves comprising seats and closing components.

[0013] Furthermore, these valves include a clamp / release system for clamping and, conversely, pulling away a translationally movable clamp component. Such a clamp / release system includes multiple assemblies that are elastically deformable by compression and are evenly distributed in the azimuthal direction around the translational direction of the clamp component, each assembly may include a coil spring and a guide shaft.

[0014] However, as with systems containing U-shaped springs, if one of the coil springs breaks, the inline sealing device must be removed from the duct and completely disassembled in order to replace the broken spring. [Overview of the project] [Problems that the invention aims to solve]

[0015] Therefore, an object of the present invention is to propose an alternative inline sealing device having at least one translationally movable clamping component. In fact, one object of the present invention is to provide a solution that enables maintenance work to be performed easily and quickly on the clamping / releasing system of such a type of inline sealing device. [Means for solving the problem]

[0016] As already disclosed, the present invention is therefore an inline sealing device: A sealing plate movable in a plane (P) between a sealing position that obstructs fluid flow in the internal zone of an inline sealing device and a flow position that allows fluid flow in the direction of fluid flow, the sealing plate comprising a solid portion for obstructing fluid flow and a perforated portion for allowing fluid flow, A body comprising a first half and a second half positioned on both sides of a plane (P), wherein the first and second halves each have a first opening and a second opening that allow fluid flow, A clamp / release system for clamping and, conversely, pulling away at least one clamp component, wherein the at least one clamp component is movable relative to the body with at least one degree of freedom to translate in a translational direction parallel to the direction of fluid flow, the at least one clamp component is positioned between a sealing plate and a first half, and the clamp / release system includes an elastically deformable sealing sleeve extending between the first half and the at least one clamp component. This relates to an inline sealing device, including one.

[0017] The clamp / release system includes a first thrust ring fixed to a first half, a second thrust ring fixed to at least one clamping component, and a plurality of assemblies that are elastically deformable by compression and are arranged equally apart from each other in the azimuthal direction around the translational direction, each assembly including a coil spring and a guide shaft including a pivot axis oriented parallel to the translational direction, the coil spring being positioned between the first and second thrust rings and the coil spring being positioned around the guide shaft.

[0018] According to the present invention, an inline sealing device is characterized in that a first thrust ring includes several first sections arranged equally apart from each other in the azimuthal direction around the translational direction, and a second thrust ring includes several second sections arranged equally apart from each other in the azimuthal direction around the translational direction.

[0019] In other words, this clamp / release system allows the operator to clamp or release the sealing plate when it is necessary to move the sealing plate from the flow position to the sealing position, or vice versa.

[0020] Subsequently, this clamping of the sealing plate is carried out between the at least one clamping component and the second half. The first and second halves are fixed to each other, and the at least one clamping component can freely translate in the translational direction between the first and second halves.

[0021] The expression "a coil spring is disposed between a first thrust ring and a second thrust ring" means that the coil spring can transmit its thrust directly or indirectly to the first thrust ring and the second thrust ring.

[0022] Thus, the coil spring can contact directly the flat surfaces of the first thrust ring and the second thrust ring, or can contact an intermediate component arranged to contact the first thrust ring or the second thrust ring.

[0023] Furthermore, each deformable assembly is configured to be attached to or removed from the in-line seal device independently of other deformable assemblies and without the need to remove the in-line seal device from the duct.

[0024] Thus, a worn, damaged, or broken coil spring of a deformable assembly can be replaced separately from other deformable assemblies on the in-line seal device attached to the duct.

[0025] For this purpose, compression and / or gripping means can be used to compress and / or remove the deformable assembly. Once compressed, the deformable assembly can be removed radially with respect to the direction of fluid flow of the in-line seal device.

[0026] Furthermore, various assemblies are symmetrically arranged around an elastically deformable sealing sleeve that extends axially in the translational direction between the first half and the at least one clamping component.

[0027] Similarly, the first section of the first thrust ring and the second section of the second thrust ring are also symmetrically arranged around the entire circumference of an axially elastically deformable sealing sleeve that extends axially in the translational direction between the first half and the at least one clamping part, respectively.

[0028] Furthermore, such a segmented arrangement of the first and second thrust rings also helps to ensure a uniform thrust generated by the clamping / pulling system between the sealing plate and the first half, and also helps to ensure an optimal seal.

[0029] The in-line seal device may further include one or more of the following features, either alone or in combination.

[0030] In fact, the guide shaft can include a head having rotational freedom with respect to the second thrust ring, and the rotational freedom is around a rotational axis that coincides with the pivot axis. <00​​​​​​​​​​​​​​​​​Advantageously, the holes can have the same diameter and be non-penetrating. These holes open only on the outer cylindrical surface of the first shoulder. Thus, such holes allow an operator with a tool to rotate the guide shaft around the axis of rotation to compress the coil spring of the deformable assembly as needed.

[0036] Furthermore, such a tool may have a male cross-section in at least one projection that is consistent with the female cross-sections of multiple holes. Such a tool may take the form of a rod, arm, or cylindrical bar that can be inserted into each of the holes sequentially after rotating the guide shaft itself at an angle of several degrees, for example, from 0 to 45 degrees.

[0037] In practice, the at least one assembly may include an axial stopper fixed to a cylindrical portion of the head, the cylindrical portion extending from a first shoulder along the pivot axis and passing through a consistent cylindrical bore provided in a second thrust ring, and the axial stopper includes a second shoulder that contacts a second surface of the second thrust ring, the second surface being positioned parallel to the first surface and perpendicular to the pivot axis.

[0038] Therefore, such an axial stopper and the second shoulder portion it includes help to axially hold the guide shaft relative to the second thrust ring. Furthermore, when the guide shaft rotates itself around the axis of rotation, the second shoulder portion can move toward the first thrust ring to compress the coil spring.

[0039] The cylindrical portion of the head, which works in cooperation with the cohesive cylindrical bore provided in the second thrust ring, allows for freedom of movement in rotation corresponding to the rotational degrees of freedom of the guide shaft relative to the second thrust ring.

[0040] Furthermore, such an axial stopper can be inserted into the cylindrical bore of the second thrust ring and then attached and secured to the free end of the cylindrical portion of the head. Reversible fastening means such as screws or nuts can be used to fix the axial stopper to the head of the guide shaft, forming an integrated assembly that is positioned in a rotatable connection with rotational degrees of freedom around the axis of rotation relative to the second thrust ring.

[0041] Advantageously, the at least one assembly may include a nut having a threaded hole that is screwed onto the threaded portion of the guide shaft, the nut being fixed to the first thrust ring under a tensile reaction transmitted to the nut by the guide shaft, i.e., without any degrees of freedom.

[0042] Such a nut is positioned relative to the first thrust ring in a sliding connection and has an axial stopper that forms a flat bearing connection with the first thrust ring. Thus, one or more flat spots positioned on the outer surface of the nut may help prevent the nut from rotating relative to the first thrust ring about a translation axis that coincides with the pivot axis.

[0043] The third shoulder portion provided on the nut can form an axial stopper, preventing translational movement along the translation axis, and can also prevent two relative rotations of the nut and the first thrust ring around two axes that are perpendicular to each other and perpendicular to the translation axis.

[0044] Tightening the guide shaft within the nut reduces the distance that separates the head of the guide shaft from the first thrust ring, and consequently, the distance that separates the first thrust ring from the second thrust ring is also reduced.

[0045] Conversely, loosening the guide shaft within the nut increases the distance that separates the head of the guide shaft from the first thrust ring, and consequently, the distance that separates the first thrust ring from the second thrust ring also increases.

[0046] Advantageously, each assembly of the multiple assemblies can cooperate with the first section of the first thrust ring and the second section of the second thrust ring, with the first section positioned on the opposite side of the second section along the pivot axis of the assembly's guide shaft.

[0047] In other words, when the assembly is removed from the inline sealing device to replace the coil spring, the first section of the first thrust ring and the second section of the second thrust ring are also removed from the inline sealing device.

[0048] Therefore, the assembly and the pair comprising the first section of the first thrust ring and the second section of the second thrust ring are connected to each other and form a group of parts that can be deformed by compression and expansion along the translation axis.

[0049] Furthermore, notches can be provided between each of the first sections and / or between each of the second sections to make it easier to introduce each of the groups of parts that are juxtaposed around the translational direction into the radial direction.

[0050] According to another embodiment of the present invention, the sealing sleeve may include a first annular portion that cooperates with a first cylindrical portion of a first thrust ring and a second annular portion that cooperates with a second cylindrical portion of a second thrust ring.

[0051] Therefore, the first annular portion can be positioned coaxially with the second annular portion. These first and second annular portions can function as supports for the first and second cylindrical portions, respectively. Such annular portions can also enable the centering and precise positioning of the cylindrical portions of the first and second thrust rings, respectively.

[0052] Furthermore, such a sealing sleeve may include a deformable portion positioned between a first annular portion and a second annular portion. Such a deformable portion may also include a corrugated portion formed from a metal sheet having rotational symmetry about the translational direction of the inline sealing device.

[0053] The present invention and its advantages will become more apparent in the context of the following description of embodiments, which are given as examples and refer to the accompanying figures. [Brief explanation of the drawing]

[0054] [Figure 1] This is a perspective cross-sectional view of the inline sealing device according to the present invention. [Figure 2] This is a partial perspective view of such a sealing device that is fitted with a clamp / release system according to the present invention. [Figure 3] This is a partial perspective view of such a sealing device that is fitted with a clamp / release system according to the present invention. [Figure 4] This is a partial cross-sectional view of such a sealing device fitted with a clamp / release system according to the present invention. [Figure 5] This is another partial perspective view of such a sealing device fitted with a clamp / release system according to the present invention. [Figure 6] This is another partial perspective view of such a sealing device fitted with a clamp / release system according to the present invention. [Modes for carrying out the invention]

[0055] Furthermore, elements present in multiple figures may be assigned the same reference number in each of them.

[0056] As previously disclosed, the present invention relates to an inline sealing device including a sealing plate that is translationally or rotationally movable between a sealing position that stops the flow of fluid through the inline sealing device and a flow position that allows the flow of fluid.

[0057] Therefore, as shown in Figure 1, such an inline seal device 1 includes a sealing plate 2 that is movable at least in a plane P so as to allow or obstruct the flow of fluid in the internal zone 3 of the inline seal device 1. At the flow position of the sealing plate 2, the perforated portion of the sealing plate 2 allows the flow of fluid in the direction of the fluid flow C1.

[0058] Furthermore, the sealing plate 2 also includes a solid portion that obstructs the fluid flow in order to perform maintenance work on a duct located downstream of the inline seal device 1 in the direction of fluid flow C1. In this example, such a solid portion 35 is positioned and shown in the internal zone 3 of the inline seal device 1, while the perforated portion 36 is shown in the external zone 4 of the inline seal device 1.

[0059] Furthermore, as shown in Figure 2, the inline sealing device 1 also includes a main body 5 which includes a first half 6 and a second half 7, respectively, positioned on both sides of the plane P. These first half 6 and second half 7 are positioned so as to be fixed to each other, and therefore there is no degree of freedom between them.

[0060] Therefore, the first half 6 has a first opening 8 and the second half 7 has a second opening 9, allowing fluid flow through the inline seal device 1 when the perforated portion is positioned in the internal zone 3 of the inline seal device 1.

[0061] The inline sealing device 1 also includes a clamp / release system 10 for clamping and, conversely, releasing at least one clamp component 11. This or these clamp components 11 can move relative to the body 5 with at least one degree of freedom to move in a translational direction D1 parallel to the direction of fluid flow C1. Thus, one or more clamp components 11 can be moved relative to the body 5 by manual or electric control means, such as a hydraulic actuator 38.

[0062] Furthermore, in this example, these clamp components 11 are positioned between the sealing plate 2 and the first half 6. However, by reversing the orientation of the inline sealing device 1 with respect to the direction of fluid flow C1, the relative positional relationship between the first half 6 and the second half 7 can be reversed. Thus, without departing from the subject matter of the present invention, these clamp components 11 can also be positioned between the sealing plate 2 and the second half 7.

[0063] The clamp / release system 10 also includes an elastically deformable sealing sleeve 12 extending between the first half 6 and one or more clamp components 11. This sealing sleeve 12 helps prevent fluid present in the internal zone 3 of the inline sealing device 1 from leaking out, regardless of the position of one or more clamp components 11 relative to the body 5.

[0064] Such a clamp / release system 10 also includes a first thrust ring 13 fixed to a first half 6 under a compressive force transmitted to the first thrust ring 13 by coil springs 16, 16', and a second thrust ring 14 fixed to one or more clamping components 11 under a compressive force transmitted to the second thrust ring 14 by coil springs 16, 16'.

[0065] The term “fixed” therefore means, for example, when using the clamp / release system 10, that the first thrust ring 13 may be held in contact with the first half 6, and the second thrust ring 14 may be held in contact with one or more clamping components 11.

[0066] As shown in more detail in Figures 3-6, such a clamp / release system 10 includes at least one assembly 15, 15' that is elastically deformable by compression, including coil springs 16, 16' and guide shafts 17, 17', which include pivot axes R1, R2 oriented parallel to the translational direction D1.

[0067] Therefore, the coil springs 16, 16' of each assembly 15, 15' are positioned between the first thrust ring 13 and the second thrust ring 14, and also extend around the guide shafts 17, 17'.

[0068] As shown, the first thrust ring 13 and the second thrust ring 14 also cooperate with the sealing sleeve 12.

[0069] Such a sealing sleeve 12 includes a first annular portion 121, a second annular portion 122, and a deformable portion 123 positioned between the first annular portion 121 and the second annular portion 122. Such a deformable portion 123 may also include corrugated portions 124, 125 formed from a metal sheet having rotational symmetry about the translational direction D1 of the inline sealing device 1.

[0070] The first annular portion 121 cooperates with the first cylindrical portion 130 of the first thrust ring 13, and the second annular portion 122 cooperates with the second cylindrical portion 140 of the second thrust ring 14.

[0071] As shown in more detail in Figure 3, the inline sealing device 1 may include a plurality of assemblies 15, 15' arranged at equal intervals in the azimuthal direction around the translational direction D1.

[0072] The arrangement of these various assemblies 15, 15' makes it possible to remove any assembly 15, 15' from the inline sealing device 1, in particular, to replace the coil springs 16, 16'.

[0073] To do this, the first thrust ring 13 includes several first sections 131, 131' arranged at equal intervals in the azimuthal direction around the translational direction D1, and the second thrust ring 14 also includes several second sections 141, 141' arranged at equal intervals in the azimuthal direction around the translational direction D1.

[0074] Therefore, if the operator wants to replace the spring 16, the first section 131 of the first thrust ring 13 and the second section 141 of the second thrust ring 14 are removed from the inline sealing device 1. One or more grooves may be provided between the two consecutive first sections 131, 131' and / or between the two consecutive second sections 141, 141' to facilitate the independent gripping of these sections.

[0075] Therefore, the assembly 15, the first section 131 of the first thrust ring 13, and the second section 141 of the second thrust ring 14 form a group of interconnected parts that are deformable in compression and expansion along a translation axis that coincides with the pivot axis R1.

[0076] Furthermore, in order to facilitate the radial introduction or grasping of each of the groups of parts juxtaposed around the translational direction D1, notches 132, 132', 142, 142' can be provided between each of the first sections 131, 13' and / or between each of the second sections 141, 141'.

[0077] Furthermore, each assembly 15, 15' cooperates with the first sections 131, 131' of the first thrust ring 13 and the second sections 141, 141' of the second thrust ring 14. Each first section 131, 131' is positioned along the pivot axes R1, R2 of the guide shafts 17, 17', facing the second sections 141, 141', respectively.

[0078] As shown in Figure 4, each guide shaft 17 may include a head 18 that has a rotational degree of freedom relative to the second thrust ring 14, and this rotational degree of freedom is centered on a rotation axis AXROT1 that coincides with the pivot axis R1.

[0079] The head 18 may include a first shoulder portion 19 that abuts the first end 161 of the coil spring 16 on one side and the first surface 145 of the second thrust ring 14 on the other side.

[0080] As shown in Figure 6, such first shoulder portions 19, 19' may include a plurality of holes 20, 20' that are equally spaced radially and azimuthally with respect to the pivot axes R1, R2. These holes 20, 20' may allow an operator to rotate the guide shafts 17, 17' around the rotation axes AXROT1, AXROT2 relative to the second thrust ring 14 using a tool, which may be in the form of a rod or bar, for example, so that each of the holes 20, 20' of the given guide shafts 17, 17' works in succession with each of the holes 20, 20' of the guide shafts 17, 17'.

[0081] Furthermore, as shown in Figure 5, each assembly 15, 15' may include axial stoppers 21, 21' fixed to the cylindrical portions 22, 22' of the heads 18, 18'. Such cylindrical portions 22, 22' extend from the first shoulder portions 19, 19' along the pivot axes R1, R2.

[0082] These cylindrical portions 22, 22' can therefore pass through the matching cylindrical bores 23, 23' provided in the second thrust ring 14. Furthermore, such axial stoppers 21, 21' include second shoulder portions 24, 24' intended to contact the second surface 146 of the second thrust ring 14.

[0083] Such a second surface 146 may be positioned parallel to the first surface 145 and perpendicular to the pivot axes R1 and R2.

[0084] Furthermore, such assemblies 15, 15' may include nuts 30, 30' having threaded holes 31, 31' that are screwed onto the threaded portions 25, 25' of the guide shafts 17, 17'. Such nuts 30, 30' are fixed to the first thrust ring 13 without any degree of freedom under a tensile reaction transmitted to the nuts 30, 30' by the guide shafts 17, 17'. Furthermore, such a tensile reaction counteracts a compressive force transmitted to the first thrust ring 13 and the second thrust ring 14 by the coil springs 16, 16'.

[0085] Therefore, a third shoulder portion 32 can be provided on the nuts 30, 30' to contact the first surface 135 of the first thrust ring 13, and one or more flat spots 33, 33' can be provided on the nuts 30, 30' to cooperate with the matching bore 137.

[0086] The first thrust ring 13 may also include a second surface 136 to which the second end 162 of the spring 16, 16' can abut to transmit compressive force.

[0087] Such a second surface 136 can be positioned parallel to the first surface 135 and perpendicular to the pivot axes R1 and R2.

[0088] Naturally, many modifications are possible in the implementation of the present invention. Although several embodiments have been described above, it should be readily apparent that it is not conceivable to exhaustively specify all possible embodiments. It is also possible to replace any of the described means with equivalent means without departing from the scope of the present invention.

Claims

1. An inline sealing device (1), - A sealing plate (2) that is movable in a plane (P) between a sealing position that obstructs the flow of fluid in the internal zone (3) of the inline sealing device (1) and a flow position that allows the flow of fluid in the direction of the fluid flow (C1), the sealing plate (2) including a solid portion for obstructing the flow of fluid and a perforated portion for allowing the flow of fluid, - A body (5) comprising a first half (6) and a second half (7) arranged on both sides of the plane (P), wherein the first and second halves (6, 7) each have a first opening (8) and a second opening (9) that allow the flow of the fluid, - A clamp / release system (10) for clamping and, conversely, releasing at least one clamp component (11), wherein the at least one clamp component (11) is movable relative to the body (5) with respect to at least one degree of freedom to translate in a translational direction (D1) parallel to the direction of the fluid flow (C1), the at least one clamp component (11) is positioned between the sealing plate (2) and the first half (6), and the clamp / release system (10) includes an elastically deformable sealing sleeve (12) extending between the first half (6) and the at least one clamp component (11), and the clamp / release system (10) is fixed to the first half (6) A clamp / release system (10) comprising a first thrust ring (13), a second thrust ring (14) fixed to at least one clamp component (11), and a plurality of assemblies (15, 15') that are elastically deformable by compression and are arranged equally apart from each other in the azimuthal direction around the translational direction (D1), each assembly (15, 15') comprising a coil spring (16, 16') and a guide shaft (17, 17') including a pivot axis (R1, R2) oriented parallel to the translational direction (D1), wherein the coil spring (16, 16') is positioned between the first thrust ring (13) and the second thrust ring (14), and the coil spring (16, 16') is positioned around the guide shaft (17, 17'), and In an inline sealing device (1) including, The first thrust ring (13) includes several first sections (131, 131') arranged at equal intervals from each other in the azimuthal direction around the translational direction (D1), and the second thrust ring (14) includes several second sections (141, 141') arranged at equal intervals from each other in the azimuthal direction around the translational direction (D1), characterized in that the first thrust ring (13) includes several first sections (131, 131') arranged at equal intervals from each other in the azimuthal direction around the translational direction (D1), Inline sealing device (1).

2. The guide shaft (17, 17') includes a head (18, 18') having rotational degrees of freedom relative to the second thrust ring (14), and the rotational degrees of freedom are characterized in that they are around a rotation axis (AXROT1, AXROT2) that coincides with the pivot axis (R1, R2). The inline sealing device according to claim 1.

3. The head (18, 18') is characterized in that it includes a first shoulder portion (19, 19') that abuts against the first end (161, 161') of the coil spring (16, 16') on one side and against the first surface (145) of the second thrust ring (14) on the other side. The inline sealing device according to claim 2.

4. The first shoulder portion (19, 19') includes a plurality of holes (20, 20') arranged at equal intervals in the radial and azimuthal directions with respect to the pivot axis (R1, R2), and the plurality of holes (20, 20') allow the guide shaft (17, 17') to be rotated around the rotation axis (AXROT1, AXROT2) with respect to the second thrust ring (14) using a tool. The inline sealing device according to claim 3.

5. The at least one assembly (15, 15') includes an axial stopper (21, 21') fixed to a cylindrical portion (22, 22') of the head (18, 18'), the cylindrical portion (22, 22') extending from the first shoulder (19, 19') along the pivot axis (R1, R2), the cylindrical portion (22, 22') passing through a matching cylindrical bore (23, 23') provided in the second thrust ring (14), and the axial stopper (21, 21') includes a second shoulder (24, 24') that contacts a second surface (146) of the second thrust ring (14), the second surface (146) being positioned parallel to the first surface (145) and perpendicular to the pivot axis (R1, R2), characterized in that The inline sealing device according to claim 3 or 4.

6. The at least one assembly (15, 15') includes a nut (30, 30') having a threaded hole (31, 31') that is screwed onto the threaded portion (25, 25') of the guide shaft (17, 17'), wherein the nut (30, 30') is fixed to the first thrust ring (13) without any degree of freedom under a tensile reaction transmitted to the nut (30, 30') by the guide shaft (17, 17'), An inline sealing device according to any one of claims 1 to 4.

7. Each assembly (15, 15') of the plurality of assemblies (15, 15') cooperates with the first section (131, 131') of the first thrust ring (13) and the second section (141, 141') of the second thrust ring (14), wherein the first section (131, 131') is positioned on the opposite side of the second section (141, 141') along the pivot axis (R1, R2) of the guide shaft (17, 17') of the assembly (15, 15'), An inline sealing device according to any one of claims 1 to 4.

8. The sealing sleeve (12) is characterized by including a first annular portion (121) that cooperates with the first cylindrical portion (130) of the first thrust ring (13) and a second annular portion (122) that cooperates with the second cylindrical portion (140) of the second thrust ring (14). An inline sealing device according to any one of claims 1 to 4.

Images