| 摘要 |
PURPOSE:To construct an instrument isolating valve in a rigid construction by mutually coupling the eccentric portions of the valves with each other to thereby suppress the twisting vibration of pipes by the eccentric portions regardless of the thermal transfer and relative displacement thereof. CONSTITUTION:An instrument isolating valve 4 is disposed in the vicinity of an instrument penetrating hole 2 passing with a plurality of instrument pipes 3 in a manner that one or more valves 4 are mounted thereat. A joint 12 is welded to a bonnet 6 disposed with the eccentril portion of the valves 4. A connecting bar 13 of suitable length is inserted into the joint 12 and coupled by bolts. The joint 12 is clamped at two positions perpendicularly in the fluid flowing direction of the valve 4 to couple all the valves 4 aligned on the circumference of the penetrated hole 2. Thus, the special hole 2 is effectively utilized to thereby mutually couple the eccentric portions of the valves 4 to thus construct the valves 4 rigidly without external support of the valves 4 regardless of the thermal expansion and relative displacement. |
