Rotary union with expanding ring
First Claim
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1. A rotary union, comprising:
- a housing having a fluid inlet;
a rotating machine component rotatably supported in the housing;
a rotating seal member associated with the rotating machine component;
a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member;
an expandable seal disposed between and sealably engaging a bore in each of the non-rotating seal member and the housing, the expandable seal including two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing;
an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing; and
a second internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the second internal camp and the bore of the non-rotating seal member.
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Abstract
A rotary union includes a housing, a rotating machine component supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, an expandable seal disposed between the non-rotating seal member and the housing, and an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing.
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Citations
16 Claims
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1. A rotary union, comprising:
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a housing having a fluid inlet; a rotating machine component rotatably supported in the housing; a rotating seal member associated with the rotating machine component; a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member; an expandable seal disposed between and sealably engaging a bore in each of the non-rotating seal member and the housing, the expandable seal including two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing; an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing; and a second internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the second internal camp and the bore of the non-rotating seal member. - View Dependent Claims (2, 3, 4)
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5. A rotary union, comprising:
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a housing having a fluid inlet; a rotating machine component rotatably supported in the housing; a rotating seal member associated with the rotating machine component; a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member; an expandable seal disposed between and sealably engaging a bore in each of the non-rotating seal member and the housing, the expandable seal including two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing; and an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing; wherein the internal clamp includes a plurality of arcuate wall segments and a plurality of resilient structures disposed, one each, between adjacent ends of two adjacent arcuate wall segments around an entire periphery of the internal clamp; and wherein each resilient structure includes; two leaf spring portions disposed, one each, at either axial end of the internal clamp; and a synchronizer bar connected between the two leaf springs. - View Dependent Claims (6, 7, 8)
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9. A rotary union, comprising:
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a housing having a fluid inlet; a rotating machine component rotatably supported in the housing; a rotating seal member associated with the rotating machine component; a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member; an expandable seal disposed between and sealably engaging a bore in each of the non-rotating seal member and the housing, the expandable seal including two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing; an expandable ring disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the expandable ring and the bore of the housing; a second expandable ring disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the second expandable ring and the bore of the non-rotating seal member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification