20150247687 | APPARATUS FOR CIRCULATING BALLS FOR CLEANING A PIPE LINE - The present invention relates to an apparatus for circulating balls. An embodiment of the present invention includes: a circulation path for circulating balls and fluid, the circulation path comprising a cooling water tube of a heat exchange unit; a pump arranged in the circulation path for pumping the balls and fluid; and a counter for counting the time and the number of the balls in relation to the circulation of the balls. | 09-03-2015 |