公开(公告)号：US5895763A

公开(公告)日：1999-04-20

申请号：US838174

申请日：1997-04-16

Applicant: Craig Edstrand ,  Edward Fyfe ,  Jerome H. Ludwig ,  Myron Shenkiryk ,  Dan Temple

Inventor： Craig Edstrand ,  Edward Fyfe ,  Jerome H. Ludwig ,  Myron Shenkiryk ,  Dan Temple

IPC: B08B9/02 ,  C02F5/08 ,  C23G1/02 ,  G01N35/00 ,  B08B3/00 ,  B08B9/03

CPC classification number: B08B9/032 ,  C02F5/08 ,  C23G1/02 ,  Y10T436/12

Abstract: A method for controlled removal of carbonate blockage from interior walls of water conduit systems having substantial reduction in flow capacity. A section of the system to be cleaned is isolated and an aqueous liquid is circulated to establish baseline liquid flow rates. An acidic cleaning composition which removes the blockage but which generates carbon dioxide gas is then added under controlled conditions to a circulating aqueous cleaning solution. The fluid flow rates and pH are monitored throughout treatment. Adjustments are made if necessary to maintain a controlled amount of carbon dioxide gas liberated. The aqueous acid cleaning solution is circulated in an open loop system with continued addition of acid until the outflow rate decreases and once again equals the inflow rate. Substantial inorganic carbonate deposits are thus removed from water conduit systems while dangerous conditions due to excessive generation of carbon dioxide gas are avoided.

Abstract translation: 控制从具有大大降低流动能力的水管道系统的内壁去除碳酸盐堵塞的方法。 要清洁的系统的一部分被分离并且水性液体循环以建立基线液体流速。 然后在控制条件下将循环的含水清洗溶液加入去除堵塞而产生二氧化碳气体的酸性清洗组合物。 在整个治疗过程中监测流体流速和pH值。 如有必要进行调整，以维持释放出的受控量的二氧化碳气体。 酸性清洗溶液在开环系统中循环，继续加入酸直到流出速率降低，并再次等于流入速率。 因此，避免了由于过量产生二氧化碳气体引起的危险状况，因此将大量无机碳酸盐沉积物从水管道系统中除去。

公开(公告)号：US5680877A

公开(公告)日：1997-10-28

申请号：US547099

申请日：1995-10-23

Applicant: Craig Edstrand ,  Myron Shenkiryk

Inventor： Craig Edstrand ,  Myron Shenkiryk

IPC: B08B9/02 ,  B08B9/032 ,  E03B7/09 ,  B08B9/06

CPC classification number: B08B9/032 ,  B08B9/0321 ,  E03B7/006 ,  B08B2209/022

Abstract: A method of and system for cleaning and maintaining water distribution pipes which have reduced flow due to an increase of water scale deposits, sediment and the like along the inside surface of the pipe includes a mobile cleaning unit which can be conveniently and easily connected to a pipe section to be cleaned. An aqueous cleaning solution is introduced and circulated in a first direction through the pipe section for sufficient time to dissolve and loosen scale and sediment. The flow direction of the treating solution is then reversed to break off or remove sediment or other tuberculated growth that has developed directionally with the direction of water flow in the pipe section. The turbulent flow in the opposite direction increases the effectiveness of the cleaning process in particularly troublesome and hard-to-clean pipe sections. The spent treating solution and other deposits are flushed from the pipe and the mobile cleaning unit to an appropriate waste stream. Advantageously, the direction of the flow of the treating solution can be reversed without disconnecting the cleaning unit from the pipe section.

Abstract translation: 用于清洁和维护排水管道的方法和系统，该管道由于沿着管道内表面的水垢沉积物，沉积物等的增加而减少了流动，所述方法和系统包括：移动式清洁单元，其可方便地和容易地连接到 管段待清洗。 引入水性清洗溶液，并通过管段沿第一方向循环足够的时间以溶解和松动垢和沉积物。 然后将处理溶液的流动方向反向以便去除或去除与管段中的水流方向相反方向发展的沉积物或其他结块生长。 在相反方向上的紊流增加了特别麻烦和难以清洁的管段中的清洁过程的有效性。 废处理液和其它沉积物从管道和移动清洁单元冲洗成适当的废物流。 有利地，可以反转处理液的流动方向，而不需要将清洁单元与管道部分断开。