Abstract: The invention relates to a mechanical seal arrangement (1) comprising a mechanical seal (2) having a rotating seal ring (3) with a first sealing surface (3a) and a stationary seal ring (4) with a second sealing surface (4a), a pre-tensioning device (6), to pre-tension one of the two sliding rings in the axial direction (X-X), a secondary sealing member (7) disposed on a rear side (40) of the axially pre-tensioned sliding ring, the pre-tensioning device (6) pre-tensioning the axially pre-tensioned sliding ring via the secondary sealing member (7), and a sleeve (8), which is arranged radially inside the secondary sealing member (7), the secondary sealing member (7) being arranged on the rear side (40) of the axially pre-tensioned sliding ring, the secondary sealing member (7) having a sealing edge (70) which is closed in an annular shape in the circumferential direction which projects from the secondary sealing member (7) in the axial direction (X-X) to the axially pre-tensioned sliding ring, wherein the sealin

Abstract: The invention relates to a mechanical seal arrangement for sealing a process chamber (6), which is filled with a non-toxic, gaseous process medium, with respect to a bearing chamber (8), comprising a first mechanical seal (2) with a rotating slide ring (20) having a first sliding surface (20a) and a stationary slide ring (21) having a second sliding surface (21a), which define a first sealing gap (22) between the sliding surfaces (20a, 21a), a second mechanical seal (3) with a rotating slide ring (30) having a third sliding surface (30a) and a stationary slide ring (31) having a fourth sliding surface (31a), which define a second sealing gap (32) between the sliding surfaces (30a, 31a), a first pretensioning device (4) which prestresses the stationary slide ring (21) of the first mechanical seal (2) in the axial direction (X-X) and a second pretensioning device (5) which prestresses the stationary slide ring (31) of the second mechanical seal (3) in the axial direction (X-X), a fluid chamber (7) arranged betw

Abstract: The invention relates to a stationary slide ring of a mechanical seal assembly, comprising a main body (41) having a slide surface (40) and a wear-measuring device (6) arranged on the main body (41) to detect wear of the slide surface (40) of the stationary slide ring on the basis of a change in an electrical variable, wherein the wear-measuring device (6) comprises an electrical voltage source (60), a measuring region (6a) on the slide surface (40), an electrical feed line (61), which electrically connects the voltage source (60) to the measuring region (6a), and an electrical return line (62), which electrically connects the measuring region (6a) to the voltage source (60), and wherein the measuring region (6a) is arranged in a recess (42) in the slide surface (40).

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) with a sliding surface (3a) and a stationary slide ring (4) with a sliding surface (4a) defining a sealing gap (5) therebetween, wherein one of the slide rings is designed as a wearing slide ring and has a hardness lower than the other one of the slide rings, wherein the wearing slide ring has a base area (30a) and a wear area (30b), and wherein the wear area (30b) has an at least partially non-cylindrical area in the axial direction (A) of the mechanical seal assembly.

Abstract: The invention relates to a compressor arrangement comprising a compressor (2) for compressing a process gas (13) from a suction region (21) towards a pressure region (22), a mechanical seal arrangement (3) for sealing against an atmosphere (6) on a shaft (5) of the compressor (2), wherein the mechanical seal arrangement comprises a mechanical seal (4) having a stationary slide ring (41) with a first sliding surface (41a) and a rotating slide ring (42) with a second sliding surface (42a), which define a sealing gap (42a) between the sliding surfaces (41a, 42a), and a barrier fluid supply (7) with a barrier fluid line (70) which extends from the pressure region (22) of the compressor (2) to the mechanical seal (4) and through which process gas is branched off from the pressure region, the stationary slide ring (41) having a through opening (8), which extends from a rear side (41b) of the stationary slide ring (41) to an orifice at the first sliding surface (41a) of the stationary slide ring to supply process ga

Abstract: The invention relates to a mechanical seal assembly comprising a slide ring seal (2) having a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), a sealing gap (5) being defined between the first and second slide surfaces, the stationary slide ring (4) having a through hole (42) extending from a rear side (41) of the stationary slide ring to an orifice (43) of the second slide surface (40) and a gas supply line (8) extending from a gas source to an inlet (44) of the through hole (42) at the rear side of the stationary slide ring, wherein grooves (6, 7) are formed in at least one of the sliding surfaces (30, 40), the grooves being arranged in radial direction between the orifice (43) of the through hole (42) and a radially outer outlet portion (50) of the sealing gap (5).

Abstract: The invention relates to a slide ring of a mechanical seal assembly, comprising a sintered, ceramic ring (41) having a slide surface (4a), which ring is made of an electrically non-conductive ceramic material, a contact body (42), which is configured for electrical contact and is arranged in the ring (41), wherein the electrical contact body (42) is made of a sintered ceramic material which is electrically conductive, and wherein the electrical contact body (42) is arranged in an recess (40) in the ring (41) and fills the recess (40).

Abstract: The invention relates to a compressor arrangement comprising a compressor (2) for compressing a process gas (13) from a suction region (21) towards a pressure region (22), a mechanical seal arrangement (3) for sealing against an atmosphere (6) on a shaft (5) of the compressor (2), wherein the mechanical seal arrangement comprises a mechanical seal (4) having a stationary slide ring (41) with a first sliding surface (41a) and a rotating slide ring (42) with a second sliding surface (42a), which define a sealing gap (42a) between the sliding surfaces (41a, 42a), and a barrier fluid supply (7) with a barrier fluid line (70) which extends from the pressure region (22) of the compressor (2) to the mechanical seal (4) and through which process gas is branched off from the pressure region, the stationary slide ring (41) having a through opening (8), which extends from a rear side (41b) of the stationary slide ring (41) to an orifice at the first sliding surface (41a) of the stationary slide ring to supply process ga

Abstract: The invention relates to a mechanical seal arrangement comprising a first mechanical seal (2) having a first rotating sliding ring (22) and a first stationary sliding ring (21) defining a first sealing gap (20) therebetween, a second mechanical seal (3) having a second rotating sliding ring (22) and a second stationary sliding ring (32) defining a second sealing gap (30) therebetween, a housing (4) having an inlet (40) and an outlet (41) for a cooling liquid, a rotating conveying sleeve (5) joined to the first rotating sliding ring (22) and the second rotating sliding ring (32), the conveying sleeve (5) having a plurality of conveying grooves (50) on its outer circumference wherein the first stationary sliding ring (21) is arranged radially outside the conveying sleeve (5) and has an inner circumference (21a) which is arranged eccentrically with respect to an outer circumference (50a) of the conveying sleeve (5) so that a circumferential eccentric gap (6) is formed between the outer circumference (50a) of the

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) with a sliding surface (3a) and a stationary slide ring (4) with a sliding surface (4a) defining a sealing gap (5) therebetween, wherein one of the slide rings is designed as a wearing slide ring and has a hardness lower than the other one of the slide rings, wherein the wearing slide ring has a base area (30a) and a wear area (30b), and wherein the wear area (30b) has an at least partially non-cylindrical area in the axial direction (A) of the mechanical seal assembly.

Abstract: The invention relates to a mechanical seal assembly (1) for sealing between a high-pressure region (8) and a low-pressure region (9) on a rotating component (7), comprising a mechanical seal (2) with a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), wherein a sealing gap (5) is defined between the slide surfaces (30, 40), a slide ring carrier (31) for the rotating slide ring (3), which is configured to connect the rotating slide ring (3) to the rotating component (7) in a rotationally fixed manner, wherein the slide ring carrier (31) comprises a sleeve region (32), and a force support arrangement (6), which is configured to support an axial force (F) acting on the mechanical seal assembly (1), wherein the force support arrangement (6) is arranged on an end face (32a) of the sleeve region (32) of the slide ring carrier (31), wherein the force support arrangement (6) comprises a clamping sleeve (60), a conical sleeve (61) and a split ring

Abstract: The invention relates to a method of operating a mechanical seal assembly (1) having a mechanical seal (2) with a rotating sliding ring (3) and a stationary sliding ring (4), defining a sealing gap (5) between the sliding surfaces thereof, comprising the steps of: collecting operating data and/or environmental data of the mechanical seal (2), transmitting the collected operating data and/or environmental data to a digital twin (31) of the mechanical seal (2), simulating and monitoring the operation of the mechanical seal (2) using the digital twin (31) based on the transmitted operating data and/or environmental data of the mechanical seal (2), and retransmitting a simulation result and/or data of the digital twin.

Abstract: The invention relates to a mechanical seal comprising a rotating slide ring and a stationary slide ring defining a sealing gap therebetween, one of the slide rings having at least a first row of a plurality of first grooves with a foot region on a first radius and a head region on a second radius wherein a second circumferential sliding region is provided between the head regions of the radially outermost row of grooves of the slide ring and an outer radial edge of the slide ring, the other of the slide rings having at least a second row of a plurality of second grooves with a foot region at a third radius and a head region at a fourth radius wherein a second circumferential sliding region is provided between the head regions of the radially outermost row of grooves of the slide ring and an external radial edge of the slide ring, wherein the first radius is smaller than the third radius, and wherein the second radius is smaller than the fourth radius.

Abstract: The invention relates to a mechanical seal arrangement comprising a first slide ring seal (2) having a rotating slide ring (21) and a stationary slide ring (22) defining a sealing gap (23) therebetween, a shaft sleeve (4), a driver (5) which connects the shaft sleeve (4) to the rotating slide ring (21) and which is arranged to transmit rotation of the shaft sleeve (4) to the rotating slide ring (21) a connecting arrangement (6) for connecting the shaft sleeve (4) to the driver (5), the connecting arrangement (6) comprising at least two rotary locks (60) and at least two recesses (40) in the shaft sleeve (4), wherein each of the rotary locks (60) has a bearing portion (61) and a locking portion (62), wherein the locking portion (62) laterally projects beyond the bearing portion (61), and wherein a rotational axis (Y-Y) of each rotary lock (60) is parallel to a central axis (X-X) of the shaft sleeve (4).

Abstract: The invention relates to a liquid-lubricated mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) and a stationary slide ring (4), wherein a sealing gap (5) is defined between a sliding surface of the rotating slide ring (3) and a sliding surface of the stationary slide ring (4), and an ultrasound arrangement (6) having an ultrasound generator (60) and at least one ultrasound head (61), wherein the ultrasound arrangement (6) is configured to direct ultrasonic waves (62) for cleaning onto components of the mechanical seal assembly (1), in order to remove dirt (7) which adheres to the components of the mechanical seal assembly.

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating seal ring (21) and a stationary seal ring (22) defining a seal gap (23) therebetween, a secondary seal (3) arranged on a back surface of one of the seal rings facing away from a sealing surface of the seal ring, the secondary seal (3) being made of a base material and having a coating (7) such that a material bond is formed between the coating (7) and the base material of the secondary seal, the secondary seal (3) being made of a base material and having a coating (7) such that a substance-to-substance connection is formed between the coating (7) and the base material of the secondary seal, a sleeve-shaped member (4) arranged radially inside the secondary seal (3), wherein a gap (5) having a gap height (H) is present between the sleeve-shaped component (4) and a region of one of the sliding rings facing radially inwards, the secondary seal (3) seals against the back side of this slide ring and the sleeve-

Abstract: The invention relates to a method of monitoring a mechanical seal arrangement (1) comprising the steps of: acquiring operational data of an individual mechanical seal arrangement (1) on a test bench (11), the acquired operational data being defined as the nominal data (17), incorporating the individual mechanical seal arrangement (1) into a sealing system (12), acquiring operational data from the individual mechanical seal arrangement (1) in the condition incorporated into the sealing system (12), the acquired operational data being defined as the actual data (18), and comparing the nominal data (17) with the actual data (18).

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating sliding ring (3) and a stationary sliding ring (4) defining a sealing gap (5) between the sealing surfaces (30, 40) thereof, a slide ring carrier (6) for holding the stationary sliding ring (4), an axially movable thrust ring (7) arranged on a rear side (43) of the stationary sliding ring (4) between the slide ring carrier (6) and the stationary sliding ring, a pretensioning device (8) arranged between the thrust ring (7) and the slide ring carrier (6) to pretension the stationary sliding ring (4) in the axial direction X-X of the mechanical seal arrangement, and an anti-rotation device (10) to keep the stationary sliding ring (4) rotationally fixed and axially movable, the anti-rotation device (10) having a first transmission device (11) for transmitting force between the sliding ring carrier (6) and the thrust ring (7) and a second transmission device (12) for transmitting force between the thrust ring

Abstract: The invention relates to a mechanical seal arrangement comprising a first mechanical seal (2) having a first rotating sliding ring (22) and a first stationary sliding ring (21) defining a first sealing gap (20) therebetween, a second mechanical seal (3) having a second rotating sliding ring (22) and a second stationary sliding ring (32) defining a second sealing gap (30) therebetween, a housing (4) having an inlet (40) and an outlet (41) for a cooling liquid, a rotating conveying sleeve (5) joined to the first rotating sliding ring (22) and the second rotating sliding ring (32), the conveying sleeve (5) having a plurality of conveying grooves (50) on its outer circumference wherein the first stationary sliding ring (21) is arranged radially outside the conveying sleeve (5) and has an inner circumference (21a) which is arranged eccentrically with respect to an outer circumference (50a) of the conveying sleeve (5) so that a circumferential eccentric gap (6) is formed between the outer circumference (50a) of the

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) with a rotating slide ring (3) and a stationary slide ring (4) defining a seal gap (5) therebetween, a pretensioning device (6) which biases the stationary slide ring (4) in the axial direction (X-X) of the slide ring seal arrangement, a support ring (7) which is arranged on the stationary slide ring (4), the support ring (7) being axially movable relative to the stationary slide ring (4) the pretensioning device (6) being arranged between the support ring (7) and the stationary slide ring, a fixing device (8) which is arranged for axially movable fixing the support ring (7) to a stationary component, a stop (9) which limits a distance (W1) by which the axially movable support ring (7) can be moved, and a secondary seal (10) which is arranged to seal between the support ring (7) and the stationary component.