The invention relates to a slide ring seal arrangement having a slide ring element (1) of an interacting slide ring pair, which slide ring element (1) is held movably relative to a mounting component (2); a secondary seal element (5) made from a flexible material for sealing an annular gap between the mounting component and the slide ring element; a support ring element (12) which is arranged between the secondary seal element and the slide ring element for preventing material of the secondary seal element from penetrating into the annular gap under external forces which act on the secondary seal element; and a prestressing device for loading the slide ring element with an axial prestressing force. The invention is characterized by a film-like intermediate layer (13) between at least one pair of adjacent ring elements (1, 10, 12) which comprise at least the slide ring element and the support ring element and via which the prestressing force of the prestressing device can be transmitted to the slide ring element.
The present invention relates to a seal element, in particular secondary seal element of a slide ring seal, having a basic body (11) which is composed of flexible material and which has surface regions (12, 13) which are aligned at an angle with respect to one another and at least one of which provides a sealing region, and having a reinforcement with increased stiffness at a corner region (15), which is defined by the surface regions, of the seal element, wherein the stiffened corner region (15) is an integral part of the basic body (11).
A method and a device are disclosed for determining the current operating state of a slide ring seal comprising at least one pair of cooperating slide rings with facing sliding surfaces which delimit a sealing gap therebetween. One of the slide rings rotates along with a rotating part while the other slide ring is mounted on a stationary part so as to be secured against rotation along with the rotating part. According to the invention, the heat flow between at least two spaced-apart selected measurement points M1, M2, M3, M4 is measured on one of the slide rings, particularly the slide ring (3) secured against rotation, by sensing the current temperature at the selected measurement points and determining the current temperature gradient between the selected measurement points from the sensed temperatures for further evaluation purposes. The current temperature gradients indicate the circumstances in which a temperature has changed at the measurement points, e.g. because there is no lubricant on the sliding surface (4) or the temperature of the medium to be sealed has changed.
The invention relates to a flow stop valve for opening and closing a fluid connection between a first and a second space, particularly the blocking fluid chamber of a slip ring sealing arrangement acted upon by a blocking fluid and a space outside of the blocking fluid chamber, having a housing (1), a fluid flow passage (2) in the housing, a first valve seat (11) on the fluid flow passage, and a closing element (6) axially displaceably disposed in the fluid flow passage and pretensioned in a first position in a sealing relationship with the first valve seat by a pretensioning force and moveable against the pretensioning force into a second position, clearing the fluid flow passage. An actuating element (16) that can be engaged with the closing element (6) and can be subjected to the fluid in the first space is designed in order to exercise an axial force on the closing element in the direction of the second position thereof under the influence of a temperature change of the fluid, in order to move the closing element into the second position against the pretensioning force when a specified fluid temperature is exceeded, the closing element being relieved of fluid pressure in the first and second positions.
A floating ring seal having at least one pair of interacting floating rings, one of which is provided so as to rotate together with a rotating component (6) and the other (3) is held in a rotationally secured manner on a stationary component (8) so as to be prevented from rotating with the rotating component, comprises a device for monitoring the operating state of the floating ring seal. The monitoring device comprises a force measuring device (10), which is provided in the rotary force flow between the stationary component (8) and the rotationally secured floating ring (3), in order to measure the instantaneous rotationally securing forces and to generate an output signal which is characteristic of said forces. The force measuring device (10) can be directly connected to a rotationally secured floating ring (3) by means of a force transmission element (14).
The invention relates to a sliding ring of a slide ring sealing arrangement, comprising a base body (10, 11) made of a carbide material. A wear-resistant coating (8, 9), made of a diamond material, is embodied on one of the front surfaces of the base body, said diamond material having a sliding surface (6, 7). At least the surface areas of the base body (10, 11), which are exposed to the medium which is to be sealed during operation, are hermetically sealed in one layer (8, 9, 12, 13) made of a diamond material having a layer thickness and/or configuration creating a layer that is impermeable to fluid. The properties of the diamond layer and/or the diamond material on the areas of the base body, which do not correspond to the sliding surface (6, 7), can be the same or different on the sliding surface side of the diamond layer (8, 9).
The invention relates to a support ring for a sliding ring of a sliding ring seal arrangement comprising a lateral recess (8) introduced into one of its axial ends for the sealing receiving element and for the non-positive mounting of the sliding ring (2). A driving ring (10) is held in the recess (8), said driving ring being made of an elastic material having an undulated profile on its inner periphery. At least the projections (15) of the undulated profile are non-positively engaged to the outer periphery of the sliding ring if the sliding ring is displaced in a driving ring by means of an outer mounting force. Each projection (15) has a flank (17) that advances in the direction (P) of the mounting displacement and that has a larger inclination angle α2 than the α1 of a trailing flank (18).
The invention relates to a sliding ring sealing arrangement for use in sterile technology. Said arrangement has one pair of interacting sliding rings (2,5), one of which is held in a non-rotating manner and the other is provided for rotating together with a rotating component. One of the sliding rings can be moved axially and is pretensioned against the other sliding ring. Said sliding ring sealing arrangement also comprises a carrier housing (1) on which the rotating sliding ring is held in the vicinity of the one of its axial ends, a mounting element (12) which can be mounted in a rotationally fixed manner on the rotating component, and a rotational force transmission device (10) for transmitting rotational force between the mounting element and the support housing. The rotational force transmission device (10) comprises a transmission ring (15) which is held in a force fit on the support housing (1) in the vicinity of its other axial end and which comprises at least one projecting drive element (20) engaging in an aligned recess (22) in the mounting element. As a result, said support housing can have a desired smooth external peripheral surface which is void of dead spaces.
A slip ring seal arrangement and a bellows seal (6) and the use of the bellows seal for such a slip ring seal arrangement are disclosed. Said arrangement comprises at least one slip ring (2, 3), forming a seal between a stationary and a rotating component with a pre-loading of the slip ring (2, 3) and the bellows seal (6) with at least one bellows region (7) made from flexible material and end assembly regions (8, 9), of which one is provided for rotationally fixed mounting on the rotating component, or a further element and the other is for mounting the slip ring (2, 3). The bellows seal (6) is essentially made from a perfluoro elastomer comtaining material and/or FFKM perfluorinated rubber according to DIN ISO 1629.
F16J 15/36 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm to the other member
10.
PUMP ARRANGEMENT HAVING A SLIDING RING SEALING ARRANGEMENT WITH A SEALING FLUID WATER SEAL, AND APPLICATION FOR PUMPING PULP SOLUTIONS IN THE PAPER INDUSTRY
The invention relates to a pump arrangement for feeding a liquid product having a pump (2) with a suction connection and a pressure connection and with a double-acting sliding ring sealing arrangement with a sealing fluid water seal for sealing off a pump driveshaft (3), wherein a sealing fluid space of the sliding ring sealing arrangement has an inlet via which some of the product fed by the pump can be introduced into the sealing fluid space in order to form the sealing fluid water seal. Here, the fed product is guided from the pressure connection of the pump (2) via a direct connection (5, 8) to the inlet of the sealing fluid space. The sealing fluid space has no outlet for the fed product. According to one preferred application of the invention, the sealing fluid water seal can be formed from the extracted part of an aqueous pulp solution in the paper industry after said aqueous pulp solution has been filtered, so that the sealing fluid space can be filled only with the water component of the pulp solution.
F04D 7/04 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogeneous
A slide ring seal arrangement comprises a rotationally fixed slide ring (4) and a slide ring (11), which is provided for rotating together with a rotating component, these slide rings each being held in a loose seat and interacting, in, in essence, radially oriented sealing surfaces, which are prestressed with a main prestressing force while in contact with one another. Each slide ring, on its front face that faces away from the sealing surface, is axially supported on a supporting part (14, 17) via an annular bearing surface (16, 20) provided between the respective supporting part and the adjacent front face of the respective slide ring. A load ratio (d12-dH2) / (d12-d22) of = 2.0, preferably between 0.8 and 2.0, preferably no greater than between 1.0 and 1.5, more preferably approximately 1.3 is maintained on the bearing surface (16, 20). The measurement (d1-d2) of each bearing surface (16, 20) is equal to = 10 mm, preferably between 0.2 and 2.0, preferably no more than approximately 0.6 mm.
Arrangement for mounting a flow pipe (2) in a pipe passage opening in a wall (1) of a container or the like, it being possible to supply the flow pipe with a first flow medium and the container with a second flow medium. The arrangement comprises a pipe connection sleeve (3) which fits through the pipe passage opening and is held therein in a sealed manner, this sleeve having a through bore (5) with a bore region (6) facing the inside of the container and in which an end section (7) of the flow pipe is received and held. At an intermediate point of the one bore region (6), a collecting aperture (9) connected to a drainage passage (10) is provided in the peripheral wall of the through bore (5) to collect any leakage of the flow media along the pipe end section (7). The invention allows continuous assessment of the sealing state of the connection between the flow pipe and sleeve over the entire operating period of the respective installation and an assessment of the quality of the connection at the time it is established.
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