Abstract: Internally insulated or packed panels house a thermal structure such as a heat recovery steam generator (HRSG). In a first embodiment, each packed panel has a cold pressure casing with an insulating layer covered by a liner plate. Welded collar studs are fixed to the cold pressure casing to secure the liner plate over the insulating layer. Small, movable end covers are provided at the edges of each packed panel to provide an adjustable panel joint. End covers of adjacent panels are in compression contact when an externally applied weld is provided between the cold pressure casings of adjacent packed panels. Each end cover is movable about each packed panel by means of oversized or slotted holes in the liner plate and end covers that receive each collar stud. Benefits are faster field assembly and allowance for thermal growth while preventing gaps and their associated hot spots from forming at the panel joints. A second embodiment employs a larger end cover in place of a smaller end cover and liner plate.

Abstract: An assembly for shipping and supporting a module for a heat recovery steam generator comprises a base having four vertical truss members slidably mounted to the base at one end. Each vertical truss member is positioned a distance apart from another vertical truss member across the base such that four paths of adjacent vertical truss members define a front, a back and two sides. The assembly further comprises at least one level. Each level comprises a horizontal member rotatably attached to the vertical truss members at the front and the back of the assembly. A junction is fixed to each vertical truss member at both sides of the assembly; a side truss member is rotatably attached to the junctions at both sides. An internal grid is attached to the horizontal truss members between the vertical truss members.

Abstract: A barrier for blocking a passage between adjacent modules of a heat recovery steam generator comprises at least one plate for extending between the modules. At least one bracket is mounted to the plate for engagement with each structure. The bracket has one end engageable with one module and an opposite end engageable with the other module for securing the plate between the modules such that the passage is blocked.

Abstract: An arrangement for containing a top supported heating unit therein comprises a top and bottom opposite the top. Two vertical members are connected to the top and the bottom and the vertical members are spaced a distance from each other. At least one level is rotatably connected between the vertical members. A plurality of support rods are connected to the top and the level. Temporary supports are removably attached to the top, the vertical members and the bottom and the heating unit extends between the top and the bottom through the level and is confined by the vertical members and the support rods.

Abstract: A modular arrangement for containing a heat exchanger module comprises a base frame and four vertical truss members slidably mounted to the base frame at one end of the members. Each vertical truss member is positioned a distance apart from another vertical truss member across the base frame to define a front, a back, and two sides. The heat exchanger unit is contained within the base frame and the vertical truss members. Intermediate tie steel is supported by the four vertical truss members. At least two different levels, each level having a junction fixed to each vertical truss member, are provided. A horizontal side truss member is rotatably attached to the junctions of adjacent vertical truss members and a diagonal truss member extends between and is removably attached to the junctions between adjacent levels. The base frame, the intermediate tie steel, the vertical truss members, and the heat exchanger unit contained therein define a module for transportation and assembly.

Abstract: A shop assembled modular steam generator wherein each module includes top supported pressure parts, casing, and a frame structure. These modules are readily transported to a remote construction site and interconnected. Each of the superheater, high pressure boiler, intermediate pressure boiler, low pressure boiler, and economizer sections of the generator comprise separate center and end modules whose casings are joined to provide a gas tight flow path around the pressure parts.

Abstract: A transition seal plate for connecting a casing to a membrane wall of a vapor generator. The plate has a generally corrugated edge which is weld connected to the membrane wall and is formed with arcuate surfaces which overlap circumferential surface portions of the tubes within the membrane wall, and protrusions which project into the spaces between the circumferential surface portions.