摘要:
Provided is a sliding component in which damage to a sliding surface can be reduced. A sliding component 1 includes a pair of seal rings which are arranged to rotate relative to each other. The seal rings 3 and 5 have sliding surfaces S1 and S2, respectively, which are facing each other. The sliding surfaces S1 and S2 are provided with: a land 9 continuously extending in a circumferential direction; inward recessed portions 11 recessed in an axial direction, extending to a radially inner side, and open to the radially inner side; and outward recessed portions 12 recessed in the axial direction, extending to a radially outer side, and open to the radially outer side.
摘要:
Provided is a floating ring type mechanical seal in which a floating ring is pinched and held between a rotary ring provided in a rotary shaft and a stationary ring provided in a seal casing to be movable in an axial direction while being urged toward the rotary ring so that a relative rotation of the floating ring with respect to the stationary ring is inhibited. The rotary ring is made of a sintered compact of SiC or cemented carbide. A diamond film is formed on a sealing surface sliding on the floating ring in the rotary ring. A diamond film continuous to the diamond film of the sealing surface is formed on an outer peripheral surface of the rotary ring and a rear surface, which is a surface opposite to the sealing surface, in the rotary ring.
摘要:
To provide a sealing device, which seals an annular gap between a shaft and a housing that rotate relative to each other to maintain a pressure of a sealed fluid, with excellent sealing properties and mountability. The device includes a first annular member 200 provided with a first cylindrical part 201 that is secured to an outer circumferential surface of the shaft 20, and a first flange 202 extending radially outward from the first cylindrical part 201; a second annular member 300 provided with a second cylindrical part 301 that is secured to an outer circumferential surface of the first cylindrical part 201, and a second flange 302 extending radially outward from the second cylindrical part 301; and an endless resin sealing ring 400 disposed between the first flange 202 and the second flange 302, the sealing ring providing a seal between itself and a shaft hole in the housing 30, and between itself and one of the first flange 202 and the second flange 302 on a low pressure side.
摘要:
An abradable seal (100) is provided, comprising an outer ring arrangement (120, 150) and an energiser (140) for urging said outer ring arrangement (120, 150) against an opposing surface, wherein an outermost surface (120) of said outer ring arrangement defines a sealing surface of said abradable seal (100); wherein said outer ring arrangement (120, 150) is configured such that after a first period of operation said sealing surface suddenly transitions from having a relatively large surface area to having a relatively small surface area, so as to cause a sudden increase in internal leakage across the seal at said transition.
摘要:
A seal assembly includes an annular carrier defining a radially inward face, and an opposed radially outward face defining a plurality of spline slots. The spline slots are configured and adapted to receive corresponding spline tabs to center the carrier in a surrounding structure. A honeycomb seal is mounted to the radially inward face of the carrier. The honeycomb seal is configured for sealing engagement with a knife-edge seal rotating relative to the honeycomb seal. The seal assembly has a relatively low coefficient of thermal expansion in comparison to the static component or the knife-edge seal. For example, a gas turbine engine can include a seal assembly as described above, wherein the carrier is mounted to a static component and a rotor mounted for rotation relative to the carrier, and wherein the rotor includes the knife edge seal component sealingly engaged to the honeycomb seal.
摘要:
Provided is a shaft seal device provided with a seal member which possesses excellent liquid tightness, small friction resistance and high wear resistance. In a shaft seal device which is arranged around the periphery of a shaft which is supported in a rotatable manner or in a reciprocating manner, and is provided with a seal member for securing liquid tightness around the shaft, the seal member is formed of a porous body formed by using a hydrophilic polymer resin in which chains are cross-linked. The shaft seal device is also characterized in that: the shaft is a shaft which extends between a liquid phase region and a gas phase region; the seal member is a seal member which suppresses a leakage of a liquid to the gas phase region from the liquid phase region; and an aqueous lubricant which is prepared by adding a water soluble thickening agent is impregnated into the seal member.
摘要:
The invention relates to a mechanical seal arrangement comprising: a rotating slide ring (2) with a first sliding surface, and a stationary slide ring (3) with a second sliding surface, which delimit a sealing gap (4) between one another, the first and second sealing surfaces having differing hardness. The harder sealing surface (20) has a diamond coating and the softer sealing surface consists of carbon composite material and a mean initial roughness R a 1 (of the diamond coating (20)) is smaller than the mean initial roughness of the sliding surface made of carbon composite material.