| 摘要 |
<p>PROBLEM TO BE SOLVED: To absorb an assembly dimension error generated in assembly of respective members so as to surely connect pipes with ease. SOLUTION: A feed water pump device is provided with a suction communication pipe 50 which communicates respective pump suction ports of two pumps 20, 25 mutually into a single pipe, a discharge communication pipe 60 which communicates respective pump discharge ports of the two pumps 20, 25 mutually into a single pipe, and a bypass communication pipe connecting the suction communication pipe 50 and the discharge communication pipe 60 together. In the suction communication pipe 50 divided between the two pumps 20, 25, the divided parts are connected together by means of a flange connection A. Connection between the discharge communication pipe 60 and the bypass communication pipe 70 is also carried out by means of a flange connection B. In each of other pipes, connection is carried out by means of a flange connection. In each of the flange connections A, B, a bolt hole diameter of the flange is formed larger than the diameter matched with a screw outside diameter of a bolt to be inserted, so that connection can be carried out if the connecting both flange faces are deflected from each other.</p> |
