Bypass seal for rotary regenerative air preheaters
OwnerNathan Hastingsinventor
Life of this patent
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Abstract
A rotary seal system is disclosed for an air circulating system. The rotary seal system includes a rotary shell having one or more air circulation chambers. The system includes a plurality of stationary, flexible seal bodies arranged in an angled fashion operatively coupled about opposing circumferential edges of the rotor shell to maintain separation between the one or more air circulation chambers. In one embodiment, a helical ramp disposed in at least one of the plurality of stationary, flexible seal bodies provides internal realignment of the flexible seal bodies.
Claims19
A rotary seal system for an air circulating system including a rotor shell having one or more air circulation chambers, the system comprising:
- a plurality of stationary, flexible seal bodies arranged in an angled fashion operatively coupled about opposing circumferential edges of the rotor shell to maintain separation between the one or more air circulation chambers.
A method for manufacturing a sealing structure about a cylindrical structure for a rotor shell, the method comprising:
- forming leafs of a bypass seal body having a length at a substantially acute angle within a range of one-quarter to three quarters from a contact area of shingles of the bypass seal body to a rotor body shell.
A method for installing a bypass seal for a rotor shell, the method comprising:
- attaching a t-bar shaped trough to the rotor shell, the t-bar shaped trough oriented parallel to an outer shell of the rotor shell;
- and
- attaching adjacent flexible seal bodies on opposing circumferential edges of an air preheater housing so that a bypass seal top outer layer of the adjacent seal bodies contacts the t-bar shaped trough on a helical ramp having a substantially acute angle between 25 to 75 degrees with respect to the outer shell of the rotor shell, whereby the bypass seal top outer layer maintains contact with the t-bar shaped trough independent of a temperature of operation of the rotor shell.
Dependencies are inferred from the claim text.