| 摘要 |
<p>The invention is an apparatus for detecting leaks in pipe systems. The apparatus has an elongate body (8) to which are attached two pairs of inflatable seals (10, 12, 14, 16); one pair of adjacent one end and the other pair adjacent the opposite end of the body. A testing zone (28) is defined between the pairs of seals. The seals of each pair are spaced one from the other along the length of the body and, when inflated, are capable of sealingly engaging the inner walls of a pipe (6) to be tested. The apparatus also has means (24) to inflate the seals; means (26) to supply a liquid to the testing zone; means (18, 20) between the seals of each pair to detect incomplete sealing between the seals, when they are inflated, and the inner walls of the pipe; and means (32) within the testing zone to detect changes in liquid level in the testing zone.</p> |
