Sealing devices for rotary piston machines |
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| 申请号 | US3759638D | 申请日 | 1971-12-27 | 公开(公告)号 | US3759638A | 公开(公告)日 | 1973-09-18 |
| 申请人 | RENAULT; | 发明人 | BRILLE M; | ||||
| 摘要 | A sealing device for rotary piston machines of the type having radial segments fitted into cavities in the stator, characterized in that this device is comprised of a detachable assembly formed by a segment holder support, a lateral shim, a radial segment and their resilient bearing means, said assembly being fitted into a corresponding cylindrically-walled cavity provided in the stator and a lateral cheek, said assembly coming into resilient bearing contact against a lateral sealing shim situated in the opposite cheek, an exterior thrust washer ensuring that this assembly is maintained in resilient juxtaposition with the radial segment and of the lateral sealing shims. | ||||||
| 权利要求 | 1. Sealing device for rotary piston machines of the type having radial segments adjusted in a support within the stator, comprising as a detachable unit a segment holder support, a lateral shim and a radial segment, said segment holder support fitting in a cylindrically walled cavity open along axial direction of the rotary piston machine and having an axial slot in which the radial segment is disposed, a part of said holder support extending outside of te stator to form a sealing collar for a screwed-in cover, said lateral shim having approximately the same diameter as said collar and the cylindrically walled cavity for said holder support, and being disposed between said screwed-in cover and the part of the segment holder fitted in the stator, and first resilient spring means between said segment holder and said radial segment, and second resilient spring means between said cover and the lateral shim to press the radial segment and the lateral shim against the piston, in sealing connection. 2. A device as claimed in claim 1 in which temporary guide means are provided to ensure the insertion of the support into its cavity. 3. A device as claimed in claim 2, in which the cylindrical portion in the stator comprises a longitudinal dovetailed slot, with which an equivalent slot in the segment holder support registers in the mean position, a fillet whose section is adapted to the profile of the two united slots ensuring the guiding of said support during its insertion into the cavity. 4. A device as claimed in claim 1, with means to hold said radial segment in its seating during its mounting on the machine in operation comprising a shearing bead or plug made of heat-destructible material. 5. A device as claimed in claim 4, in which said shearing bead or plug is made of wax and is inserted in drilled holes having their axis on the lateral surface of contact of the segment with the corresponding surface of its seating in the support, its length being proportional to the force of resistance to sheering to be provided. 6. A device as claimed in claim 1, in which the segment holder assembly comprises means for adjusting the angular setting of the segment holder assembly having the radial segment therein and means for locking the inclination of the segment holder assembly. 7. A device as claimed in claim 6, in which the adjusting means of the angular setting are detachably mounted on an outer bearing washer positioned over said screwed-in cover. 8. A device as claimed in claim 7, in which the control of the angular setting adjustment is effected by means of a screw held in translation by a swivelling boss firmly attached to the outer bearing washer, said screw driving rotarily the segment holder assembly by means of an additional swivelling boss attached to an intermediate connecting component which is in engagement with the segment holder assembly. 9. A device as claimed in claim 1, in which the lateral sealing shim is of approximately the same diameter as the segment holder and contains a concentric circular channel for interlocking with a portion of said segment holder assembly. 10. A device as claimed in claim 6, in which the inclination locking means are mounted on the intermediate connecting component and the bearing washer. |
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