[열교환기] Stack 되는 기기의 Interconnecting Flange Tolerance 기준

Stack 되는 열교환기 Interconnecting Flange Tolerance 기준

 

- Out of Parallel (수직 방향의 Gap)

위쪽 Nozzle Flange와 아래쪽 Nozzle Flange의 0도, 90도, 180도, 270도 Point에서의 각 수직 방향 Gap 차이가 1mm 이내여야 함.

 

- Mating Nozzle의 Separation (수평방향의 Gap)

위쪽 Nozzle Flange와 아래쪽 Nozzle Flange의 수평방향으로의 차이가 3mm 이하여야 함.

 

 

(API 660) 9.7.3

For stacked heat exchangers, mating nozzle flanges shall not be out-of-parallel with each other by more than 1 mm (1/32 in.), measured across any diameter. Separation of mating nozzle flanges shall not exceed 3 mm (1/8 in.) after installation of the gasket. Bolts shall be capable of being inserted and removed freely without binding. Shims shall be installed as required between the supports and shall be tack-welded in place.