摘要:
A rotary seal arrangement has a rotatable component (2) supported within a machine component (3), the machine component (3) forming a housing structure for a sealing means (23) which acts to seal off a high-pressure area (10) between the components (2,3) to allow the passage of high pressure fluid therebetween. The seal arrangement includes a holding element (30) for mounting in the machine component (3) to support spaced sealing members (23) therein to define said high pressure area (10) therebetween. The arrangement is particularly suitable for use where the rotatable component (2) is formed as a rotatable shaft and the holding element (30) and sealing members (23) are arranged around the shaft such as, for example, in a vehicle tyre pressure changing system for use on an agricultural tractor. The spaced sealing members (23) are provided with support elements (20) which extend generally radially relative to the rotatable component (2) to provide support for the sealing members (23) against the high pressure fluid, the holding element (30) and support elements (20) forming a cartridge like arrangement which encloses the sealing members (23).
摘要:
A method for sealing lengthy porous bodies moving between zones of different pressures where a porous body (T) while moving between the zones of different pressures (P1, P2) is passed through a sealing substance (M) under pressure. A substance with thixotropic properties, used as the sealing substance, is continuously fed to the porous body (T) under a pressure higher than that in the zone (P1) of high pressure, whereas the porous body (T) is impregnated with the thixotropic sealing substance (M) so that its cross-section is filled up, on its whole length, by the sealing substance. A hydraulic cylinder on the basis of the method comprises a chamber (7) filled with a visco-elastoplastic substance and connected to a means of creating a pressure inside it which is higher than that of the working fluid filling the space inside the casing of the cylinder.
摘要:
Die Erfindung betrifft eine Dichtungseinrichtung (1) zur Abdichtung wenigstens einer an eine in einer Bewegungsrichtung (4) bewegte Fläche (3) angrenzenden Unterdruck- oder Überdruckzone (6) in einer Papier-, Tissue- oder Kartonmaschine, mit wenigstens einem der bewegten Fläche (3) gegenüberliegenden Dichtelement (10), das wenigstens einen Zuführkanal (11) für ein Schmiermittel aufweist. Um die Abnutzung eines Dichtelements über seine gesamte Länge gleichmäßig deutlich zu verringern, endet der wenigstens eine Zuführkanal (11) in einem Versorgungskanal (12), der in Bewegungsrichtung (4) zu Beginn des Dichtelementes (10) angeordnet ist.
摘要:
Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zur thermischen Behandlung von Filamentgarn in einer Dampfdruckzone mittels Dampf mit einem Garndurchlauf, welcher eine Einlauf- und eine Auslaufdrossel für die Dampfdruckzone aufweist, dabei wird der Garndurchlauf kanalartig ausgebildet und weist drei Kanalzonen auf: ein Dampfdruckkanalstück, ein Einlauflabyrinth und ein Auslauflabyrinth, wobei der Garndurchlauf als Ganzes für das Einfädeln freilegbar ist und in eine offene Einfädelstellung und eine geschlossene Betriebsstellung bringbar ist. Das Verfahren dient der thermischen Behandlung von Filamentgarn mittels komprimiertem Dampf, wobei das Garn für die thermische Behandlung kontinuierlich durch einen Garndurchlauf einer Dampfbehandlungsstufe mit einem Überdruck von 0,1 bis 30 bar geführt wird.
摘要:
An apparatus for treating a travelling web of material in a predetermined gaseous atmosphere comprising a chamber (1) through which a moving web of material (2) is transported from an inlet at a first end of the chamber (1) to an outlet at a second end and a means for introducing and controlling gas (5) intended to provide said predetermined gaseous atmosphere within said chamber (1), wherein said inlet and outlet each comprise a sealing means (4a, 4b) designed to enable passage of said web of material (2) therethrough whilst minimising the ingress of an external gas boundary layer (3) around said web of material (2) characterised in that said apparatus also comprises one or more re-circulation channels (7, 8) adapted to re-circulate gases within said chamber (1) from the second end of the chamber to the first end of the chamber thereby negating or substantially negating any pressure difference within the chamber (1) between said inlet and outlet. Said apparatus is preferably s part of a non thermal equilibrium plasma generating apparatus or corona discharge assembly.
摘要:
Device for isolating from the external ambient a processing chamber for continuous treatment of manufactured goods (F) comprising at least one dynamic seal element (A) characterised in that it is provided with a cooling system (8) to cool down part of its surface below the melting and/or condensing temperature of an auxiliary material, causing such auxiliary material to coat said part.
摘要:
A valve apparatus for injecting sealant into a packing valve body (2) without requiring venting of pressure within the valve apparatus. The apparatus includes an interior valve (4) which is attached to the valve body (2) by drilling and tapping a connection or by friction welding. A high pressure packing gland (21) is attached to the apparatus and a drill bit (41) is passed through this combination to complete an opening into the packing valve body (2). The drill bit (41) is withdrawn past the interior valve (4), which is closed and then outside of the combination. The packing gland (21) is attached to the packing valve body (2). The valve is closed, a completion plug (13) is installed into an end of fitting (1), and a completion cap (28) with a sealing ring (27) is installed over the entire valve (4) and fitting (1), thereby forming multiple seals.
摘要:
An apparatus (1) for continuous treatment of a material (M) of continuous length with a low temperature plasma of a plasma gas (G) under vacuum. The apparatus (1) includes a plasma treatment chamber (3) having a chamber wall (4) and, in the wall (4), an entrance zone (6) and an exit zone (7) for receiving and discharging the continuous material (M). Evacuating means (48) is operable to establish a vacuum in the chamber (3). Support means (9) advances the continuous material (M) along a path (8) through the chamber (3) and also maintains a vacuum seal at the entrance and exit zones (6, 7). The support means (9) includes a backing roller (10) mounted adjacent the entrance and exit zones (6, 7), an entrance sealing roller (11) positioned adjacent the entrance zone (6) and an exit sealing roller (13) positioned adjacent the exit zone (7). The backing roller (10) forms with each sealing roller (11, 13) a respective nip (12, 14) at the entrance and exit zones (6, 7) through which the continuous material (m) passes into and out of the treatment chamber (3). A plasma generating head (53) is posi tioned within the treatment chamber (3) adjacent the path (8) for generating a low temperature plasma which contacts the continuous material (M) while it is advanced through the treatment chamber (3).
摘要:
Oil slinger systems include a seal runner comprising an annular radial member having a radius (R) and an outer axially extending member having an axial length (L) such that a ratio (L/R) is between 0.8 and 1.4, the annular radial member disposed at a first angle with respect to the outer axially extending member, a heat shield in mechanical communication with the seal runner, and a volume bounded by an outer face of the annular radial member and an inner face of the heat shield. Methods of radial convective cooling include pumping a cooling liquid through the oil slinger system and convectively cooling the oil slinger.