MÉTODO E MONTAGEM DE CARTUCHO DE VEDAÇÃO

Abstract

METHOD AND ASSEMBLY OF SEALING CARTRIDGE. The present invention relates to a method and assembly of a sealing cartridge; the sealing cartridge (1) comprises a set of sealing components configured to be mounted in a removable manner relative to each other so as to form the sealing cartridge (1), and wherein at least one of said sealing components is configured to be attached to another sealing component and / or to a shaft housing (21) by means of a tongue and groove joint system (3).

Description

1 / 20 METHOD AND ASSEMBLY OF SEALING CARTRIDGE

[0001] The present invention relates to the technical field of mechanical seals for machines comprising rotating assemblies, such as a shaft, and relates more precisely to sealing cartridges.

[0002] Mechanical seals are mechanical devices designed to help join mechanical components together by preventing leakage, and / or containing pressure, and / or excluding contamination. These seals are notably used in machines comprising rotating assemblies, such as dry gas seals (i.e., a mechanical seal that uses a sealing gas to create a barrier between a process gas and the atmosphere) which equip most centrifugal gas compressors or gas turbines. Mechanical seals for rotating assemblies, and in particular dry gas seals, are available in a wide variety of configurations and are generally contained within one or more cartridges. For example, tandem dry gas seals comprise a primary seal and a secondary seal contained within a single cartridge, with the secondary seal serving as a backup in case of failure of the primary seal.

[0003] The sealing cartridge can be described as an assembly of mechanical components that typically forms a hollow cylindrical body and therefore has a hollow cylindrical shape, the hollow part being configured to receive a shaft or rotating element against which the cartridge's sealing components are arranged, said hollow cylindrical body then being installed in a shaft housing, also called a sealing cavity, of a machine, said shaft housing or sealing cavity surrounding said shaft, providing a seal between the shaft and the housing (or inner wall of the sealing cavity). One of the main advantages of Petition 870250116573, dated 12 / 17 / 2025, page 5 / 61 2 / 20 Using a sealing cartridge to seal a shaft is its removableness: the sealing cartridge is in fact mounted removablely inside the sealing cavity, annularly around the shaft, such that removing / installing the cartridge simultaneously removes / installs all the sealing components contained within the sealing cartridge, allowing for quick assembly / disassembly of the sealing components.

[0004] Typically, a sealing cartridge comprises an axial stack of ring-shaped sealing components configured to be mounted annularly around the shaft (i.e., in the axial / longitudinal direction of the stack), thus giving rise to the aforementioned hollow cylindrical shape of the cartridge. Among said ring-shaped sealing components (or annular components), the following can be distinguished: - housing components that are ring-shaped sealing components characterized by an outer diameter that is configured to match an internal space of a shaft housing; and - shaft sleeve components which are ring-shaped sealing components characterized by an inner diameter configured to match the size, i.e., the diameter, of the shaft.

[0005] According to typical cartridge designs, the housing components are mounted or located radially on the shaft sleeves and are generally designed to hold other ring-shaped sealing components, such as stationary seals or clamping rings, in a predefined position within the cartridge, and / or to serve as support for such ring-shaped sealing components. During shaft rotation, the housing components are configured to remain stationary. Petition 870250116573, dated 12 / 17 / 2025, page 6 / 613 / 20 nários with respect to said rotation. As for the shaft sleeve, it is configured to cover the shaft so as to form a sleeve around said shaft. It may remain stationary or be driven into rotation by means of a rotation of the shaft. In this case, the shaft sleeve will rotate together with the shaft, at the same angular velocity. The external and internal diameters of the housing component stack and shaft sleeves define respectively a substantially cylindrical external surface and a substantially internal surface of the sealing cartridge that fits respectively within said internal space of the shaft housing or sealing cavity of a machine (for example, a pump or compressor) and with the shaft geometry of said machine in such a way that the shaft can be received within the hollow part of the cartridge when mounting the sealing cartridge within said shaft housing.The housing components are generally coupled or fastened to each other by means of screws and / or dowels to form a unified body, i.e., the said cartridge, enclosing all the sealing components. Typically, radial or axial screws are used to couple the housing components axially or radially.

[0006] The cartridges of the prior art are complex devices whose assembly and disassembly require specific knowledge and skills for the assembly or disassembly of the different ring-shaped cartridge sealing components. For example, an inaccurate assembly of the different ring-shaped sealing components, for example, a misalignment, may greatly reduce the sealing efficiency or may lead to a defect, for example, a screw breakage or thread damage.

[0007] One objective of the present invention is to propose a method for assembling a sealing cartridge and a sealing cartridge assembly that facilitates the assembly and disassembly of sealing cartridges, and that Petition 870250116573, dated 12 / 17 / 2025, page 7 / 61 4 / 20 produces a less complex and more compact cartridge, and consequently a simpler manufacturing of cartridge components.

[0008] This objective is achieved through the measures taken as presented in the independent claims. Other advantageous options are presented in the dependent claims.

[0009] The present invention relates to a sealing cartridge configured for providing a seal between a rotating shaft that typically equips a machine, for example, a compressor, and a shaft housing or sealing cavity of such machine. The sealing cartridge according to the present invention has a substantially hollow shape, preferably a substantially cylindrical hollow shape, around a longitudinal axis A that passes through the center of the sealing cartridge and that corresponds to the axis of rotation of the shaft when the sealing cartridge surrounds said shaft in the shaft housing or sealing cavity, i.e., when it is mounted annularly around said rotating axis of said housing / shaft cavity.The hollow shape of the sealing cartridge is typically characterized by an external size, for example, an external diameter for the substantially cylindrical hollow shape, configured to correspond to an internal space of the shaft housing, and an internal diameter configured to correspond to the size (i.e., the diameter) of the rotating shaft. Evidently, the hollow (cylindrical) shape may also be characterized by various external sizes (diameters) and / or internal diameters in order to correspond to a shaft housing and / or a shaft characterized by different radial sizes. The sealing cartridge according to the present invention comprises an assembly, or more precisely a stack, of sealing components (i.e., components that directly provide a seal and / or participate in the sealing, for example, by supporting a seal). Petition 870250116573, dated 12 / 17 / 2025, page 8 / 61 5 / 20 sealing), preferably ring-shaped sealing components configured to be mounted in a removable manner relative to each other so as to form the sealing cartridge. According to the present invention, at least one of said sealing components, hereinafter referred to as component TMRS, is configured to be attached (or fixed) to another of said sealing components and / or to the shaft housing by means of a mortise and tenon joint system. For example, and preferably, component TMRS is a ring-shaped sealing component configured to be attached (or fixed) to another ring-shaped sealing component and / or to the shaft housing by means of said mortise and tenon joint system.

[0010] Preferably, the TMRS component is configured to be mounted annularly around the shaft and is characterized by an inner diameter configured to match the size or one of the sizes (i.e., the diameter) of the shaft. Alternatively or additionally, the TMRS component is configured to be mounted annularly around the shaft and is characterized by an outer size or diameter configured to match the size or one of the sizes of the shaft housing. Preferably, the TMRS component is configured to remain stationary during a rotation of the rotating shaft. In particular, the TMRS component may comprise at least one part configured to rotate together with the rotating shaft during a rotation of the rotating shaft, and may optionally comprise another part that remains stationary. In particular, the entire TMRS component is configured to rotate together with said rotating shaft.Preferably, the TMRS component is a housing component and / or a shaft sleeve. The same is, for example, a housing component configured to simultaneously form a sleeve around the shaft. Petition 870250116573, dated 12 / 17 / 2025, p. 9 / 61 6 / 20

[0011] According to the present invention, the joint system is configured to ensure coupling of the TMRS component to said other sealing component and / or shaft housing by means of relative rotation, around said longitudinal axis, of the TMRS component with respect to said other sealing component and / or shaft housing. This typically replaces the screw / pin joint systems used for joining housing components together, increasing the tensile strength and compactness of the cartridge. Pins and / or fittings of the TMRS joint system are configured to cooperate with the fittings and / or pins of a joint system equipping the other sealing component or shaft housing.

[0012] In particular, the TMRS component's joint system comprises one or more pins and / or one or more fittings, each pin or fitting being configured to cooperate with a fitting or pin of a joint system equipping said other sealing component and / or shaft housing, to fasten or secure the TMRS component to said sealing component and / or shaft housing by rotating the TMRS component relative to said other sealing component and / or shaft housing. According to the claimed joint system, only one rotation of the TMRS component is required to fasten it together with another sealing component of the seal cartridge or shaft housing, thus eliminating the need for screws for fastening, which will prevent screw breakage or thread damage. Additionally, the fitting and pin can be easily adapted or optimized according to the features of the shaft and shaft housing, as well as the machine requirements.Preferably, the tenons and / or mortises are distributed equidistantly along the circumference of the TMRS component, for example, on the face configured for facing. Petition 870250116573, dated 12 / 17 / 2025, p. 10 / 61 7 / 20 the said other sealing component or shaft housing. Optionally, the TMRS component comprises or is configured to cooperate with a pin system for securing it to said other sealing component and / or shaft housing. The pin system is configured to prevent relative rotation thereof.

[0013] Additionally, the use of a rotation of the TMRS component for securing it to said other sealing component and / or shaft housing will allow automatic centering of the TMRS component relative to said other sealing component and / or shaft housing during rotation.For example, at 0° of relative rotation, the TMRS component is in a loose position, in which the snap-fit ​​and mortise joint system is characterized by an initial play between the corresponding mortise and tenon parts that must lock together by rotation, and then by a relative rotation of the TMRS component with respect to said other sealing component and / or shaft housing, said play is reduced to zero until a fixed position is reached for the TMRS component, in which the TMRS component is fixed to said other sealing component and / or shaft housing. Consequently, the assembly and disassembly of the cartridge sealing components are facilitated.

[0014] In particular, the present invention further relates to a method for assembling a sealing cartridge, the method comprising the step of assembling the sealing components, preferably ring-shaped sealing components, into one another in order to form said stack of sealing components, and being characterized in that it comprises coupling at least one of said sealing components – namely, said TMRS component – ​​to another of said sealing components of the sealing cartridge and / or to the shaft housing by rotating said TMRS component around the longitudinal axis and with respect to said or Petition 870250116573, dated 12 / 17 / 2025, page 11 / 61 8 / 20 other sealing component and / or shaft housing. Said rotation will notably allow each stud and / or fitting of the TMRS component's joint system to engage (or fit) into a fitting and / or stud of the joint system of said other sealing component and / or shaft housing.

[0015] A more detailed description of the present invention will be provided below based on embodiments illustrated by the following figures:

[0016] Figure 1 shows a cross-sectional side view of a schematic representation of a sealing cartridge according to the present invention.

[0017] Figure 2 shows a schematic representation of a three-dimensional seal cartridge housing component equipped with a tongue and groove joint system according to the present invention.

[0018] Figure 3 shows a schematic representation of a three-dimensional labyrinth-type seal according to the present invention.

[0019] Figure 4 shows a portion of a longitudinal cross-section of the labyrinth-type seal illustrated in Figure 3.

[0020] Figure 5 shows a schematic illustration of a first preferred sealing cartridge according to the present invention (side view).

[0021] Figure 6 shows a schematic illustration of a second preferred sealing cartridge according to the present invention (side view).

[0022] Figure 7 shows a schematic illustration of a preferred third sealing cartridge according to the present invention (side view).

[0023] Figure 8 shows a schematic three-dimensional illustration. Petition 870250116573, dated 12 / 17 / 2025, page 12 / 61 9 / 20 final sealing cartridge shown in Figure 7.

[0024] Figure 9 shows a schematic illustration of a pin system according to the present invention.

[0025] Figure 10 shows details of the pin system according to the present invention.

[0026] In the following embodiments, the case of a sealing cartridge with a substantially cylindrical hollow shape will be taken as an illustration, wherein the sealing components joined using the mortise and tenon joint system according to the present invention are ring-shaped sealing components. Obviously, the external shape of the sealing cartridge is not restricted, provided that it can receive the rotating shaft and fit into the sealing cavity.

[0027] Figure 1 shows a longitudinal cross-section of a schematic representation of a sealing cartridge 1 according to the present invention. As is known in the art, the sealing cartridge 1 may comprise a stack of several ring-shaped sealing components 11-19 constructed according to different configurations and geometries. The term stack means an axially centered assembly (“centered in the axial sense” with respect to the longitudinal axis of the sealing cartridge) of ring-shaped sealing components, wherein the ring-shaped sealing components are preferably axially mounted one after the other on top (considering the longitudinal axis of the cartridge as vertical) and / or radially around (or above) a previously mounted ring-shaped sealing component, thus forming a kind of stack or pile of ring-shaped sealing components that results in said cartridge.The purpose of Figure 1 is simply to present the concept of the present invention without focusing on any type, configuration, geometry, or construction of the cartridge. Petition 870250116573, dated 12 / 17 / 2025, page 13 / 61 10 / 20 specific sealing. More detailed specifications will be presented below.

[0028] According to Figure 1, the sealing cartridge 1 is mounted annularly around a rotating shaft 2 which is configured to rotate around a longitudinal axis A' of rotation according to an angular velocity ω. The sealing cartridge 1 is configured to be removablely installed in a shaft housing 21 which surrounds and encloses the shaft 2 and its seals provided by the sealing cartridge 1. The sealing cartridge 1 typically provides a seal between the rotating shaft 2 and the shaft housing 21, preventing, for example, any leakage of a process gas or contamination of the process gas. Preferably, the sealing cartridge according to the present invention is a dry gas sealing cartridge. The sealing cartridge typically has a cylindrical shape centered around a longitudinal axis A which coincides with the longitudinal axis A' when the sealing cartridge is mounted in the shaft housing 21 annularly around the shaft 2.

[0029] According to the present invention, at least one, or one part, or each ring-shaped sealing component 11-19 of the sealing cartridge is a TMRS component, that is, it is configured to be coupled to at least one or another ring-shaped sealing component by means of a mortise and tenon joint system 3. The coupling according to the claimed mortise and tenon joint system 3 is advantageously free of any screw and / or pin that would secure the TMRS components in assembly. Optionally, at least one TMRS component comprises a mortise and tenon joint system 3 configured to couple it to the shaft housing 21. As schematically shown in Figure 1, a first TMRS component 11 is, for example, a shaft sleeve coupled by means of the claimed joint system. Petition 870250116573, dated 12 / 17 / 2025, page 14 / 61 11 / 20 of a tenon and mortise 3 to a second component TMRS 12, wherein the second component TMRS 12 is a housing component configured to house one or more sealing elements and located radially above the first component TMRS 11. Or a third component TMRS 13 is a housing component coupled to a fourth component TMRS 14 by means of said tenon and mortise system, wherein the fourth component TMRS 14 is also a housing component configured to house one or more sealing elements. A fifth TMRS 15 component is, for example, a labyrinth-type seal that is coupled by means of said mortise and tenon joint system to one or more ring-shaped sealing components, for example, to the fourth TMRS 14 component on one axial side of the fifth TMRS 15 component and / or to a sixth TMRS 16 component on the other axial side of the fifth TMRS 15 component, wherein the sixth TMRS 16 component is a housing component.For example, a seventh component TMRS 17 is a shaft sleeve coupled by means of the aforementioned tenon joint and fitting system 3 to an eighth component TMRS 18 which is also a shaft sleeve.

[0030] The TMRS component according to the present invention can be any ring-shaped, i.e., annular, sealing component of the sealing cartridge, such as a housing or shaft sleeve, or ring, etc. Preferably, the TMRS component is a housing component of the sealing cartridge and is coupled by means of a tongue and groove joint system to another component which is: - a labyrinth-type seal for the sealing cartridge; or - another housing component for the sealing cartridge; or - a barrier-type seal for the sealing cartridge; or Petition 870250116573, dated 12 / 17 / 2025, p. 15 / 61 12 / 20 - a stationary sleeve for the sealing cartridge; or - a stationary sealing ring for the sealing cartridge.

[0031] The TMRS component may also be a rotary cartridge seal shaft sleeve, for example, a shaft sleeve fixed to the shaft and enclosing a corresponding ring, the shaft sleeve and the corresponding ring rotating at the shaft rotational speed, the shaft sleeve being coupled by means of a tongue and groove joint system to another component which is: - another shaft sleeve for the sealing cartridge; or - a sealing cartridge ring, such as a matching ring; or - another component of the sealing cartridge or shaft housing that is configured to rotate along with the shaft sleeve.

[0032] For coupling by means of the mortise and tenon joint system 3, at least one face or surface, for example, an axial circular face or surface A1 (i.e., whose normal vector is parallel to the longitudinal axis of the sealing cartridge), or a radial circular face or surface C1 (i.e., whose normal vector extends radially from the longitudinal axis of the sealing cartridge), of the TMRS component comprises one or more tenons 31 and / or one or more tenons 32, as shown in Figures 2 to 4. Figure 2 shows a TMRS component that is a cartridge housing component and comprising an even number of tenons 31 configured to cooperate with the tenons 32 of a labyrinth-type seal shown in Figure 3. Figure 4 shows a detailed view of the mortise and tenon joint or coupling of the housing component illustrated in Figure 2 with the labyrinth-type seal illustrated in Figure 3.

[0033] In particular, the spike 31 according to the present invention is a protruding part of the TMRS component comprising a. Petition 870250116573, dated 12 / 17 / 2025, p. 16 / 61 13 / 20 groove 311 configured to receive a head or edge of the fitting 321. The tenon 31 further comprises a protruding head 312 configured to slide in a groove 322 of the fitting when the TMRS component is rotated around the longitudinal axis A from the loose position to the fixed position with respect to another TMRS component or to the shaft housing, wherein, in the loose position, the TMRS component may be removed from contact with said other TMRS component or shaft housing, and, in the fixed position, the separation between them will be prevented by means of the coupling of each tenon with a fitting.During or due to said rotation, the faces or surfaces of the TMRS component comprising the stud and / or fitting are pressed against the adjacent faces or surfaces of said other TMRS component or shaft housing in such a way that said faces or surfaces of the TMRS component are in contact with the faces or surfaces of said other TMRS component or shaft housing, providing a noticeable seal between the TMRS component and said other TMRS component or shaft housing. The fitting 32 is or typically comprises a groove 322 or hole or cavity made in the body of a TMRS component of the seal cartridge and configured to receive the stud 31, in particular, the protruding stud head 312 of said other TMRS component or shaft housing in order to form a gasket.Preferably, the mounting groove 322 extends along the entire circumference of the TMRS component, forming, for example, a flange around said circumference, and the mounting edge 321 or head extends only along a part of said circumference, according to an arc whose length is at least equal to the length of the arc defined by the tenon 31 when measured along the same radius from the longitudinal axis. Preferably, the mounting 32 of a TMRS component comprises an axial contact face M1 covering an angular sector. Petition 870250116573, dated 12 / 17 / 2025, page 17 / 61 14 / 20 S is the size of the tenon (the term “tenon size” meaning the size of the arc described by the tenon) of the other TMRS component with which it is to be coupled, and configured to be placed in contact with a contact surface T1 of said other TMRS component, said contact surface T1 being an axial face or surface positioned in an angular sector between two successive tenons of said other TMRS component when the TMRS component is in the loose position. The contact face M1 is radially limited by the engagement edge 311.When the TMRS components are rotated relative to each other, the contact face M1 moves in an angular sector occupied by one of said two successive tenons 31, the protruding head 312 of one of said two successive tenons 31 sliding in the engagement groove 322 positioned between the contact face M1 and the body of the TMRS component, and the engagement edge 311 of said contact face M1 sliding in the tenon groove 311 located between the protruding head 312 and the body of the TMRS component. According to the claimed mortise and tenon joint system 3, the faces or surfaces of the TMRS components that are to be coupled to each other comprise an even number of annular sectors S of preferably identical size, each second sector comprising a tenon 31 or a mortise 32, wherein each tenon 31, or mortise 32, is configured to cooperate or engage with a mortise 32, or tenon 31, of said other TMRS component.Each tenon 31, or fitting 32, occupies the annular sectors of the adjacent faces of the TMRS components that are to be coupled in assembly to form the sealing cartridge. According to the present invention, and preferably, the rotation to fasten or couple two TMRS components to each other may be clockwise or counterclockwise, i.e., both directions of rotation will be simultaneously permitted by the tenon joint system. Petition 870250116573, dated 12 / 17 / 2025, p. 18 / 61 15 / 20 fitting 3, which will facilitate the assembly of the sealing cartridge.

[0034] Figures 5 to 7 present preferred embodiments of the sealing cartridge according to the present invention. These are preferably dry gas sealing cartridges. In particular, the sealing cartridge illustrated in Figure 5 comprises a first rotating shaft sleeve 51 that contacts a second adjacent rotating shaft sleeve in the axial direction 52, wherein the first shaft sleeve 51 supports in the radial direction a sealing barrier 53 comprising a mortise and tenon joint system or a screw joint system for coupling the sealing barrier 53 to a primary housing component 54, the latter being coupled to a secondary housing component 55 by means of a mortise and tenon joint system 3 according to the present invention.The primary housing 54 and the secondary housing 55 each comprise sealing components that operate in parallel in a back-to-back configuration characteristic of the well-known opposed double gas seal.

[0035] Figure 6 shows a tandem gas seal, in which the TMRS components according to the present invention are a primary housing 61 and a secondary housing 62 coupled to each other by means of a tenon and socket joint system 3, wherein the primary housing 61 is radially located on a first rotating shaft sleeve 63 coupled to a second adjacent rotating shaft sleeve in the axial direction 64 on which the secondary housing 62 is installed in the radial direction. The coupling between the first shaft sleeve 63 and the second shaft sleeve 64 is preferably made by means of a second tenon and socket joint system 3A according to the present invention.

[0036] Figure 7 shows a tandem gas seal with an intermediate labyrinth seal 75, in which the TMRS components Petition 870250116573, dated 12 / 17 / 2025, page 19 / 61 16 / 20 according to the present invention are a primary housing 71 coupled by means of a first mortise and tenon joint system according to the present invention to an axial annular side of the labyrinth seal 75, the other axial annular side of the labyrinth seal 75 being coupled to a secondary housing 72 by means of a second mortise and tenon joint system according to the present invention. The primary housing 71 is located radially on a first rotating shaft sleeve 73 coupled to a second adjacent rotating shaft sleeve 74 on which the secondary housing 72 is installed radially. The coupling between the first shaft sleeve 73 and the second shaft sleeve 74 is preferably made by means of a third mortise and tenon joint system 3A according to the present invention.Optionally, a sealing barrier 76 axially adjacent to the secondary housing 72 may be coupled to it by means of a fourth mortise and tenon joint system according to the present invention. Figure 8 shows a three-dimensional view of the tandem gas seal with the intermediate labyrinth seal illustrated in Figure 7, and uses the same numerical references.

[0037] As is usual in sealing cartridges, other sealing components may be arranged or installed within or supported by the housing components shown in Figures 5 to 8. These show preferred embodiments of the sealing cartridge according to the present invention for the specific type of tandem, in tandem with an intermediate labyrinth seal or with an opposing double gas seal. As explained above, other configurations are possible in which at least one, preferably two, TMRS components are fitted in the sealing cartridge according to the present invention.

[0038] Figures 9 and 10 show a pin-lock system Petition 870250116573, dated 12 / 17 / 2025, page 20 / 61 17 / 20 of the present invention, wherein said pin system is configured to fasten one TMRS component to another TMRS component and / or shaft housing when they are mounted against each other, i.e., when they are coupled by means of the pin and fitting system according to the present invention. The pin system comprises a pin 91, preferably cylindrical, configured to move, preferably in the axial or radial direction with respect to the longitudinal axis of the sealing cartridge, within a hole or cavity 92 made in the body of the TMRS component, between a retracted position, in which the pin 91 is fully located within the hole or cavity 92, and a fixed position, in which a pin head 911 is located outside said cavity.

[0039] Said cavity 92 is configured to open onto a face of the TMRS component which is configured to contact another face of said other TMRS component or shaft housing when they are coupled to each other by rotation via the dowel and socket joint system. Said face is, for example, an annular sector S1 comprised between two adjacent dowels or two adjacent sockets (see Figure 2). Provided that the TMRS component is in its loose position relative to said other TMRS component or shaft housing, said other face pushes the pin 91 into its cavity 92. By means of the relative rotation of the TMRS component around the longitudinal axis of the sealing cartridge and relative to said other TMRS component or shaft housing, another cavity or hole 93 made in the body of said other TMRS component or shaft housing is located towards the pin.In the fixed position of the TMRS component, the pin cavity 92 and said other cavity or hole 93 face each other and are aligned with each other, allowing the pin 91 to move from the retracted position to the fixed position, in which its head 911 is fitted inside said other cavity 93, which is... Petition 870250116573, dated 12 / 17 / 2025, page 21 / 61 18 / 20, in other words, configured to receive the aforementioned 911 pinhead.

[0040] According to the present invention, each component TMRS preferably comprises said cavity 92 or said other cavity 93 of the pin system, wherein said cavity 92, or said other cavity 93, is configured to face the other cavity 93, or cavity 92, of the other TMRS component or shaft housing when the TMRS component is coupled to said other TMRS component or shaft housing by means of the pin and socket system, and is therefore in a fixed position. In the fixed position, pin 91 is fitted into said other cavity 93 and will consequently prevent any relative rotation of the coupled bodies.Preferably, an access opening 94, for example, a radial or axial access opening, is made in the body of the TMRS component or said other TMRS component or said shaft housing to provide access to the pin head 911 from outside the sealing cartridge, allowing an operator or a machine to push the pin back into its retracted position while the TMRS component is coupled to said other TMRS component or shaft housing. Pushing the pin 91 back into its retracted position unlocks the tenon and mortise joint system, allowing relative rotation of the TMRS component with respect to said other TMRS component or shaft housing, and allows disassembly of the coupled TMRS components or removal of the sealing cartridge from the shaft housing. Preferably, a spring 96 disposed in the cavity 92 between the end of the cavity and the pin 91 is configured to hold the pin 91 in the fixed position.In order to unlock the mortise and tenon joint system, pin 91 moves in a direction opposite to the force applied by spring 96 on pin 91, compressing the spring to the end of the cavity so that the pin reaches its retracted position, which will allow free rotation of the component. Petition 870250116573, dated 12 / 17 / 2025, p. 22 / 61 19 / 20 te TMRS with respect to said other TMRS component or shaft housing.

[0041] In summary, the present invention proposes a sealing cartridge comprising one or more ring-shaped sealing components configured to be mounted annularly around a rotating shaft, wherein at least one of said ring-shaped sealing components is configured to be coupled / fixed to another ring-shaped sealing component and / or shaft housing by means of a tongue-and-groove joint system. The ring-shaped sealing component may be any annular component of the sealing cartridge suitable for the claimed joint system: it may be a stationary ring-shaped sealing component or a rotating ring-shaped component.For this purpose, the ring-shaped component will comprise the studs and / or fittings of the sealing system, each stud or fitting being configured to cooperate with a fitting or stud of the sealing system of said other ring-shaped sealing component or shaft housing for coupling the latter in assembly by means of a relative rotation around the longitudinal axis of the sealing cartridge.Preferably, the sealing cartridge according to the present invention comprises at least two ring-shaped sealing components configured to be coupled in assembly by means of the gasket system according to the present invention, wherein one of the ring-shaped sealing components comprises said pins and / or fittings of the gasket system, wherein each pin, or fitting, will be configured to cooperate with a fitting, or pin, of the other ring-shaped sealing component for coupling the latter in assembly by means of a relative rotation around the longitudinal axis of the sealing cartridge. The gasket system of each. Petition 870250116573, dated 12 / 17 / 2025, page 23 / 61 The 20 / 20 TMRS component is therefore configured to cooperate with an alternative sealing system that equips said other ring-shaped sealing component or shaft housing, wherein the alternative sealing system comprises pins and / or fittings configured to cooperate with the pins and / or fittings of the TMRS component. Finally, a preferred pin system equips the TMRS component to lock into position, i.e., to block the rotation of the TMRS component with respect to the ring-shaped sealing component or the coupled shaft housing.

[0042] The use of a mortise and tenon joint system for coupling the ring-shaped sealing components of the sealing cartridge offers several advantages compared to existing sealing cartridges. Notably, this system makes the cartridge less complex and more compact, and further simplifies the machining of the cartridge components. Indeed, while the use of screws and / or dowels as a fastening means results in complex machining and a complex geometry of the different cartridge components, requiring the provision of adequate space and location for each fastening means so that it remains accessible to an operator when assembling or disassembling the cartridge, the present invention produces an axial coupling of the ring-shaped sealing components free from such screw and / or dowel fastening means.Consequently, the present invention reduces the engineering and material costs that may result from the use of non-standard screws and materials. Finally, the present invention also facilitates the assembly and disassembly of the cartridge. Petition 870250116573, dated 12 / 17 / 2025, p. 24 / 61

Claims

1 / 4 CLAIMS 1. A sealing cartridge (1) suitable for providing a seal between a rotating shaft (2) and a shaft housing (21), the sealing cartridge (1) having a hollow shape around a longitudinal axis (A); the sealing cartridge (1) comprising: - a set of sealing components suitable for being mounted in a removable manner relative to each other so as to form the sealing cartridge (1), each said sealing component being suitable for being mounted in an annular manner around the rotating shaft (2); - at least one of said sealing components, hereinafter referred to as component TMRS, is suitable for being fastened to the other sealing component of said assembly and / or to the shaft housing (21) by means of a mortise and tenon joint system (3), - the component TMRS comprising a pin system for fastening the component TMRS to said other sealing component and / or to the shaft housing,The said pin system is configured to prevent relative rotation of the pins, wherein the pin system comprises a pin (91) movably disposed in a hole (92) disposed in the body of the TMRS component, said hole (92) being axially aligned with a cavity (93) of said other sealing component or shaft housing when they are coupled together, wherein the pin (91) is suitable to move between a fixed position in which it is fitted into the cavity (93) and a retracted position, wherein, in the fixed position, or in the retracted position, the relative rotation between the TMRS component and said other sealing component and / or shaft housing is prevented, or permitted, characterized by the fact that the pin (91), in the retracted position, is positioned entirely within the hole (92). Petition 870250116573, dated 12 / 17 / 2025, page 25 / 61 2 / 4, 2. Sealing cartridge (1), according to claim 1, characterized in that said hollow shape is a substantially cylindrical hollow shape around the longitudinal axis (A), and the sealing components of said assembly are ring-shaped sealing components.

3. Sealing cartridge (1), according to either of claims 1 or 2, characterized in that the TMRS component has an internal diameter suitable to match the size of the shaft (2), said TMRS component being a shaft sleeve (11).

4. Sealing cartridge (1), according to any one of claims 1 to 3, characterized in that the TMRS component has an outer size or diameter suitable to match the size of the shaft housing (21), said TMRS component being a housing component (12).

5. Sealing cartridge (1), according to any one of claims 1 to 4, characterized in that the TMRS component is suitable to remain stationary during a rotation of the rotating shaft (2).

6. Sealing cartridge (1), according to any one of claims 1 to 5, characterized in that the TMRS component comprises at least one part suitable for rotating together with the rotating shaft (2) during a rotation of the rotating shaft (2).

7. Sealing cartridge (1), according to any one of claims 1 to 6, characterized in that the TMRS component is a housing component of the sealing cartridge (1), and said other sealing component is: a) a labyrinth-type seal of the sealing cartridge; or b) another housing component of the sealing cartridge; or Petition 870250116573, dated 12 / 17 / 2025, page 26 / 61 3 / 4 c) a barrier-type seal of the sealing cartridge; or d) a stationary sleeve of the sealing cartridge; or e) a stationary sealing ring of the sealing cartridge.

8. Sealing cartridge (1), according to any one of claims 1 to 6, characterized in that the TMRS component is a rotating shaft sleeve of the sealing cartridge, and said other ring-shaped sealing component is: a) another shaft sleeve of the sealing cartridge; or b) a rotating sealing ring of the sealing cartridge; or c) another component of the sealing cartridge or shaft housing suitable for rotating together with the rotating shaft sleeve.

9. Sealing cartridge (1), according to any one of claims 1 to 8, characterized in that the gasket system (3) is suitable for ensuring a coupling of the TMRS component to said other sealing component and / or to the shaft housing (21) by means of a relative rotation, around said longitudinal axis (A), of the TMRS component with respect to said other sealing component and / or to the shaft housing.

10. Sealing cartridge (1), according to any one of claims 1 to 9, characterized in that the gasket system (3) of the TMRS component comprises one or more pins (31) and / or one or more fittings (32), wherein each pin (31), or fitting (32), is suitable for cooperating with a fitting (32), or pin (31), of a gasket system equipping said other sealing component and / or shaft housing, to fasten or secure the TMRS component to said sealing component and / or shaft housing, by rotating the TMRS component relative to said other sealing component and / or shaft housing from a loose position to a fixed position.

11. Sealing cartridge (1), according to claim 10, characterized in that a spring (96) of the sealing system is located in said hole (92) and suitable for holding the pin (91) in the fixed position. Petition 870250116573, dated 12 / 17 / 2025, p. 28 / 61

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