| 摘要 |
A cathodic protection system having a deep bed anode assembly including a readily replaceable anode. The anode assembly is located within a deep bore hole which is filled with an electrically conductive particulate material up to a predetermined height. The assembly comprises a base assembly located on the bottom of the bore hole, a first conduit extending the full length of the bore hole to the base, and a second conduit connected to the first conduit adjacent the top of the bore hole and extending to a depth slightly below the height of the conductive material and a third conduit extending the full length of the bore hole and perforated along the portion within the electrically conductive material. A small diameter wire electrode extends through the electrically conductive material and is connected at its upper end in a cable extending through the first conduit and at its lower end in a cable passing through the base assembly and the first conduit. Both cables are connected to a rectifier located on the surface remote from the bore hole. Rope guide means are connected to the two cables and extend parallel with the assembly of the cables and anode.
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