Alstom Power N.v.

Abb Air Preheater Inc.

Kevin J O'Boyle

Michael Zakel

James R Larkin

Kurt M Fierle

An axial seal plate for an air preheater having a single, unitary structure including a sealing portion disposed intermediate first and second end portions extending orthogonally from the sealing portion. The axial seal plate does not including any welds for joining the end portions to the sealing portion.

Low-distortion axial seal plate for air preheaters

A sector plate for an air preheater including a seal plate having a sealing surface and an oppositely disposed mounting surface. Multiple tabs mount a portion of a rigid support structure to the mounting surface of the seal plate. Multiple support members mount the support structure to the air preheater.

Low-distortion sector plate for air preheaters

A transition element for providing an interface between a duct having a substantially rectangular cross section and an air preheater having a substantially circular cross section. The transition element includes an inner sidewall, an outer sidewall, and first and second end walls, where the outer sidewall and the first and second end walls form first and second transition corners. Each of the transition corners comprises first and second flow deflectors, each having an outer terminal edge and first and second side edges extending laterally from the terminal edge to an inner point. The first side edge of the first flow deflector is mounted to the second side edge of the second flow deflector and the outer terminal edges of the first and second flow deflectors are mounted to the duct to connect the air preheater to the duct.

Single seam duct corner

A rotary regenerative air preheater has ring assemblies at the upper and lower ends which define the outer periphery and support the air preheater housing panels. The ring assemblies are spaced by spokes which are tied to the hub of the air preheater and vertically supported from the air preheater structural members. The rotor housing panels are attached around and between the spoked ring assemblies. The ring assemblies are formed form a series of uniform interchangeable segments and they support the peripheral bypass seals.

Spoked support ring for air preheater housing

The support grating system for the heat exchange baskets of a rotary regenerative air preheater is arranged to be able to make full use of the rotor volume for the heat absorbent material. Support gratings can be located inside of the volume of the rotor enclosed by the pin rack assembly and baskets can still be loaded. This is accomplished by installing certain of the support gratings or portions thereof after the baskets have been loaded into position in the basket layer inside of the pin rack assembly.

Rotor construction for air preheater

An arrangement is provided in an air preheater for mounting and adjusting the sector plates and the axial seal plates in relation to the rotor using one adjustable mounting means and a stabilizer assembly. The stabilizer assembly includes a stabilizer beam which is fixedly mounted to the external preheater structure, a pair of stabilizer lugs having one end fixedly mounted to the stabilizer beam, a pair of stabilizer arms each having a first end rotatably mounted to the other end of the stabilizer lugs by a torsion bar which extends between the stabilizer lugs, and a pinned linkage mechanism which rotatably mounts the second end of each stabilizer arm to the sector plate or axial plate.

Plate stabilizer assembly for rotary regenerative air preheaters

A connecting linkage is provided between two structural members which includes a pinned connection to allow rotation of one structural member with respect to the other and which permits adjustment and alignment before locking the device in position without the need for drilling a precisely positioned hole for the pin in the structural member. An oversized hole is formed in one of the structural members and the pin is placed through the hole. A first support plate having pin-sized holes is then placed over each end of the pin followed by a second pair of support plates also having pin-sized holes. The assembly is then moved with respect to the first structural member as permitted by the oversized hole around the pin into a desired position. The second pair of support plates are then welded to the second structural member and the first pair of support plates are welded to the first structural member. If desired, the pin may be welded to the second pair of support plates. The first pair of support plates and the first structural member are free to rotate about the pin and with respect to the second pair of support plates and the second structural member.

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Wellsville, NY, United States of America

Kevin J O'Boyle