초록 ▼

A decoking tool includes a valve body equipped with a pressurized fluid inlet and having a plurality of fluid passages, including drilling fluid passages extending substantially the full length of the valve body to conduct fluid to drilling nozzle sockets, and cutting fluid passages extending approx

A decoking tool includes a valve body equipped with a pressurized fluid inlet and having a plurality of fluid passages, including drilling fluid passages extending substantially the full length of the valve body to conduct fluid to drilling nozzle sockets, and cutting fluid passages extending approximately half as far as the drilling fluid passages to conduct fluid to cutting nozzle sockets, the drilling and cutting fluid passages being disposed alternatingly on a circular locus about an axial centerline of the valve body. There are nozzles installed in the nozzle sockets. A diverter plate is interposed between the valve body and the pressurized fluid inlet and has axial fluid passages disposed on a circular path congruent with the circular locus, the disposition of the axial fluid passages being such that the passages align either with the drilling fluid passages or with the cutting fluid passages of the valve body. Means are provided for rotating the diverter plate to selectively provide fluid communication to either the drilling fluid passages or the cutting fluid passages.

대표청구항 ▼

[ Having described the invention, we claim:] [1.] A decoking tool comprising:a valve body equipped with a pressurized fluid inlet, said body having an axis and a plurality of axially extending fluid passages, including drilling fluid passages extending substantially the full length of said valve bod

[ Having described the invention, we claim:] [1.] A decoking tool comprising:a valve body equipped with a pressurized fluid inlet, said body having an axis and a plurality of axially extending fluid passages, including drilling fluid passages extending substantially the full length of said valve body to conduct fluid to drilling nozzle sockets, and cutting fluid passages extending approximately half as far as said drilling fluid passages to conduct fluid to cutting nozzle sockets, said drilling and cutting fluid passages being disposed alternatingly on a circular locus about an axial centerline of said valve body;a plurality of nozzles installed one in each of said nozzle sockets;a diverter plate interposed between said valve body and said pressurized fluid inlet and having axial fluid passages disposed on a circular path congruent with said circular locus, the disposition of said axial fluid passages being such that said passages align either with the drilling fluid passages or with the cutting fluid passages of the valve body; andmeans for rotating said diverter plate to selectively provide fluid communication to either the drilling fluid passages or the cutting fluid passages.