Seal for a compressor and centrifugal compressor equipped with such a seal
First Claim
1. A seal for a compressor configured to compress a working fluid, said seal comprising:
- a casing;
at least one assembly comprising a rotating seal face ring configured to rotate as one with a sleeve mounted on a shaft of the compressor and a stationary seal face ring mounted on the casing; and
circulating means for circulating a heating fluid for heating working fluid leaks that occur between the faces of the stationary and rotating seal face rings, said circulating means being operable when the compressor is not running, wherein a face of the stationary seal face ring is configured to be urged to press against a face of the rotating seal face ring, and said circulating means is formed in a low pressure region in the casing and extending at least partially downstream of the seal face rings with respect to a flow direction of said working fluid leaks.
2 Assignments
0 Petitions
Accused Products
Abstract
A seal for a rotary compressor comprises a casing, at least one assembly having a rotating seal face ring which rotates as one with a sleeve intended to be mounted on a shaft of the compressor and of a stationary seal face ring mounted on the casing, the seal face rings being urged to press against one another via their rubbing face. The seal design further incorporates fluid circulation for heating leaks of compressible fluid conveyed by the compressor that occur between the seal face rings, this fluid circulation being formed in the casing and extending at least partially downstream of the seal face rings with respect to the direction of flow of the fluid stream.
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Citations
9 Claims
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1. A seal for a compressor configured to compress a working fluid, said seal comprising:
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a casing; at least one assembly comprising a rotating seal face ring configured to rotate as one with a sleeve mounted on a shaft of the compressor and a stationary seal face ring mounted on the casing; and circulating means for circulating a heating fluid for heating working fluid leaks that occur between the faces of the stationary and rotating seal face rings, said circulating means being operable when the compressor is not running, wherein a face of the stationary seal face ring is configured to be urged to press against a face of the rotating seal face ring, and said circulating means is formed in a low pressure region in the casing and extending at least partially downstream of the seal face rings with respect to a flow direction of said working fluid leaks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification