Abstract:
A mechanical face seal and a method of using the mechanical face seal are described. The mechanical face seal includes a plurality of groove sets that are etched into a stationary seal and/or a rotating seal ring. Each of the plurality of groove sets includes feed grooves, collection grooves, distribution grooves, a collector, retention cavities and discharge grooves. The mechanical face seal can be used to reduce the friction that is generated from the stationary seal and the rotating seal ring during operation. Additionally, the groove sets work cooperatively to introduce, circulate and expel lubricant between the seal interface, thereby promoting cooling of the seal.
Abstract:
Eine Dichtungsanordnung (100) für ein drehbar gegenüber einem weiteren Bauteil gelagertes Bauteil umfasst einen Faltenbalg (10), ein feststehendes Dichtungselement (8) und ein zu dem feststehenden Dichtungselement (8) in gleitendem Kontakt gelagertes drehbares Dichtungselement (6). Dabei wird eine eine Dichtwirkung zwischen dem feststehenden Dichtungselement (8) und dem drehbaren Dichtungselement (6) verursachende Druckkraft durch den Faltenbalg (10) erzeugt.
Abstract:
A seal member (80) for a rotary regenerative scrubber (10) includes a hub (30), a rim (48) circumferentially surrounding the hub, and a plurality of spokes (86) extending from the hub to the rim. The hub, rim, and spokes define an axially facing seal face (88) configured to form a sealing engagement with an opposed seal surface of a rotary regenerative scrubber, and a mounting face (90) axially opposed to the seal face configured for mounting to a rotor assembly (20) of a rotary regenerative scrubber. The seal face includes a labyrinth seal (92) defined therein.
Abstract:
Es wird ein Kompressor (1) für eine Kraft-Wärme-Maschine, eingerichtet zur Kompression eines unter Normalbedingungen gasförmigen Kältemittels, mit einer Antriebswelle (3) und einer die Antriebswelle (3) umgreifenden Dichtungseinrichtung (5), die zwei Dichtelemente, nämlich einen Gleitring (7) und einen Gegenring (9, 309) auf- weist, die mit je einer Dichtfläche (11, 13, 313) dichtend aneinander liegen, sodass zwischen den Dichtflächen (11, 13, 313) ein Dichtspalt (17) ausgebildet ist, wobei eine Fliehkraft-Schmiereinrichtung (25) zur Schmierung der Dichtungseinrichtung (5) vor- gesehen ist, vorgeschlagen. Der Kompressor (1) zeichnet sich dadurch aus, dass eines der Dichtelemente (7, 9, 309) im Bereich der Dichtflächen (11, 13, 313) einen größeren Durchmesser aufweist als das andere Dichtelement (7, 9, 309), wobei das Dichtelement (7, 9, 309) mit dem größeren Durchmesser in seiner Dichtfläche (11, 13, 313) mindestens eine Radialnut (29, 329) aufweist, die sich in Richtung zu dem Dichtspalt (17) hin erstreckt.
Abstract:
Embodiments of the invention disclose a method for carrying out emergent shaft sealing for a reactor coolant pump and a shaft sealing assembly. The method comprises the steps that a passive stopping sealing member (5) is arranged in a first sealing assembly and forms an opening under the normal operation condition, without affecting the first sealing assembly using a liquid film formed by fluid static pressure to prevent reactor coolant from leaking along a pump shaft (1); under the station blackout condition, after sensing high-temperature fluid flowing into the first sealing assembly, the passive stopping sealing member is closed and holds the pump shaft of the reactor coolant pump tightly, the gap between the first sealing assembly and the pump shaft of the reactor coolant pump is blocked, and therefore the reactor coolant is prevented from leaking along the pump shaft. According to the method, the problem of main pump shaft sealing leakage under the station blackout condition is effectively solved, and the damage probability of a reactor core of a nuclear power plant is lowered.
Abstract:
The present disclosure relates to a guiding arrangement (14, 16) for a retractable thruster assembly (10). The guiding arrangement (14, 16) may comprise a foundation plate (22), a first upper guide (40), a second upper guide (41), a first lower guide (38), and a second lower guide (39). The first lower guide (38) and the second upper guide (41) may be arranged such that an arc angle within the range from 25° to 75° is confined therebetween. Thus, flexibility regarding the implementation of the retractable thruster assembly as L-drive or Z-drive may be gained.
Abstract:
A gyratory crusher sealing ring assembly having an annular body with a first part to mate against a sealing surface provided at an underside region of the crusher head and a second part for mounting the body at a support part axially below the head. The sealing ring is configured not to flex or bend in response to the sliding contact between the ring and the head surface. This is achieved as the ring comprises a Young's modulus (E-modulus) in the range 1700 to 4300 MPa and is substantially rigid. The ring is biased against the sealing surface of the head via a bias component or region.