WELL ANODE GROUNDING DEVICE Russian patent published in 2003 - IPC

FIELD: equipment of systems for cathode protection against corrosion, namely well anode grounding devices. SUBSTANCE: grounding device includes single central steel electrode onto which constructional members of grounding device are stringed in the form of garland. Each member has steel tubular pipe coated with layer of electrically conductive concrete embraced by layer of coke charge and housed in steel thin-wall casing with steel gauze on its ends. On ends of tubular pipes there are inner cone turnings for placing steel thin-wall cone slit sleeves in the form of collet chuck with conicity degree no more than 1 : 50, said sleeves may be joined with turning and with central electrode. Gap is provided between walls of well where grounding device is mounted and casings; said gap is filled with electrically conducting concrete. EFFECT: enhanced operational reliability, increased useful life period of device. 3 dwg