| 摘要 |
The invention relates to a tool for disintegrating coke, having a housing attached to a drill stem in operation, and at which or in which at least one nozzle for cutting and a nozzle for drilling of coke and at least one valve for closing and opening t he nozzles is arranged, wherein said tool is adapted to have two different operating state s and wherein said at least one valve closes off said cutting nozzles in the drilling operating state, while the drilling nozzles are closed off by said at least one valve in the cutting operating state, and wherein said housing, said valve and said nozzles are adapted so that water may flow unhindered from said drill stem through said housing and said valve and through the nozzles not closed off by said valve, characterized in that the nozzles to be closed, depending on each chosen operating state, are closed o ff by the balls of a ball valve. The invention further relates to a tool, wherein the arrangeme nt for operating the valve is arranged above the nozzles.
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