| 摘要 |
<p>A detector mounted in a two circuit fluid distribution system signals warning when significant leakage occurs. This detector prevents supply to a faulty circuit and maintains the sound circuit in operation. A detector comprising a hollow cylinder (6) has fluid inlet (7) with two outlets (1, 16) to distribution circuits. A piston (12) in the cylinder has channels (11, 18, 4, 22) through which fluid flows via valve seats (2, 15) into outlets. The piston is maintained in position by a spring-loaded (20) stop (19). When flow increases in one direction the piston moves to seat a valve (5, 13) and a stop is forced into the groove (8, 10). Electric contacts (14, 24) signal valve closure.</p> |
